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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c10617
1 files changed, 10617 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
new file mode 100644
index 000000000..ab0aa1a61
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
@@ -0,0 +1,10617 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2016-2018 Mellanox Technologies. All rights reserved */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/rhashtable.h>
+#include <linux/bitops.h>
+#include <linux/in6.h>
+#include <linux/notifier.h>
+#include <linux/inetdevice.h>
+#include <linux/netdevice.h>
+#include <linux/if_bridge.h>
+#include <linux/socket.h>
+#include <linux/route.h>
+#include <linux/gcd.h>
+#include <linux/if_macvlan.h>
+#include <linux/refcount.h>
+#include <linux/jhash.h>
+#include <linux/net_namespace.h>
+#include <linux/mutex.h>
+#include <net/netevent.h>
+#include <net/neighbour.h>
+#include <net/arp.h>
+#include <net/inet_dscp.h>
+#include <net/ip_fib.h>
+#include <net/ip6_fib.h>
+#include <net/nexthop.h>
+#include <net/fib_rules.h>
+#include <net/ip_tunnels.h>
+#include <net/l3mdev.h>
+#include <net/addrconf.h>
+#include <net/ndisc.h>
+#include <net/ipv6.h>
+#include <net/fib_notifier.h>
+#include <net/switchdev.h>
+
+#include "spectrum.h"
+#include "core.h"
+#include "reg.h"
+#include "spectrum_cnt.h"
+#include "spectrum_dpipe.h"
+#include "spectrum_ipip.h"
+#include "spectrum_mr.h"
+#include "spectrum_mr_tcam.h"
+#include "spectrum_router.h"
+#include "spectrum_span.h"
+
+struct mlxsw_sp_fib;
+struct mlxsw_sp_vr;
+struct mlxsw_sp_lpm_tree;
+struct mlxsw_sp_rif_ops;
+
+struct mlxsw_sp_rif {
+ struct list_head nexthop_list;
+ struct list_head neigh_list;
+ struct net_device *dev; /* NULL for underlay RIF */
+ struct mlxsw_sp_fid *fid;
+ unsigned char addr[ETH_ALEN];
+ int mtu;
+ u16 rif_index;
+ u8 mac_profile_id;
+ u16 vr_id;
+ const struct mlxsw_sp_rif_ops *ops;
+ struct mlxsw_sp *mlxsw_sp;
+
+ unsigned int counter_ingress;
+ bool counter_ingress_valid;
+ unsigned int counter_egress;
+ bool counter_egress_valid;
+};
+
+struct mlxsw_sp_rif_params {
+ struct net_device *dev;
+ union {
+ u16 system_port;
+ u16 lag_id;
+ };
+ u16 vid;
+ bool lag;
+};
+
+struct mlxsw_sp_rif_subport {
+ struct mlxsw_sp_rif common;
+ refcount_t ref_count;
+ union {
+ u16 system_port;
+ u16 lag_id;
+ };
+ u16 vid;
+ bool lag;
+};
+
+struct mlxsw_sp_rif_ipip_lb {
+ struct mlxsw_sp_rif common;
+ struct mlxsw_sp_rif_ipip_lb_config lb_config;
+ u16 ul_vr_id; /* Reserved for Spectrum-2. */
+ u16 ul_rif_id; /* Reserved for Spectrum. */
+};
+
+struct mlxsw_sp_rif_params_ipip_lb {
+ struct mlxsw_sp_rif_params common;
+ struct mlxsw_sp_rif_ipip_lb_config lb_config;
+};
+
+struct mlxsw_sp_rif_ops {
+ enum mlxsw_sp_rif_type type;
+ size_t rif_size;
+
+ void (*setup)(struct mlxsw_sp_rif *rif,
+ const struct mlxsw_sp_rif_params *params);
+ int (*configure)(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack);
+ void (*deconfigure)(struct mlxsw_sp_rif *rif);
+ struct mlxsw_sp_fid * (*fid_get)(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack);
+ void (*fdb_del)(struct mlxsw_sp_rif *rif, const char *mac);
+};
+
+struct mlxsw_sp_rif_mac_profile {
+ unsigned char mac_prefix[ETH_ALEN];
+ refcount_t ref_count;
+ u8 id;
+};
+
+struct mlxsw_sp_router_ops {
+ int (*init)(struct mlxsw_sp *mlxsw_sp);
+ int (*ipips_init)(struct mlxsw_sp *mlxsw_sp);
+};
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev);
+static void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif);
+static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree);
+static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_lpm_tree *lpm_tree);
+static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_fib *fib,
+ u8 tree_id);
+static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_fib *fib);
+
+static unsigned int *
+mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir)
+{
+ switch (dir) {
+ case MLXSW_SP_RIF_COUNTER_EGRESS:
+ return &rif->counter_egress;
+ case MLXSW_SP_RIF_COUNTER_INGRESS:
+ return &rif->counter_ingress;
+ }
+ return NULL;
+}
+
+static bool
+mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir)
+{
+ switch (dir) {
+ case MLXSW_SP_RIF_COUNTER_EGRESS:
+ return rif->counter_egress_valid;
+ case MLXSW_SP_RIF_COUNTER_INGRESS:
+ return rif->counter_ingress_valid;
+ }
+ return false;
+}
+
+static void
+mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir,
+ bool valid)
+{
+ switch (dir) {
+ case MLXSW_SP_RIF_COUNTER_EGRESS:
+ rif->counter_egress_valid = valid;
+ break;
+ case MLXSW_SP_RIF_COUNTER_INGRESS:
+ rif->counter_ingress_valid = valid;
+ break;
+ }
+}
+
+static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
+ unsigned int counter_index, bool enable,
+ enum mlxsw_sp_rif_counter_dir dir)
+{
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ bool is_egress = false;
+ int err;
+
+ if (dir == MLXSW_SP_RIF_COUNTER_EGRESS)
+ is_egress = true;
+ mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+ if (err)
+ return err;
+
+ mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable,
+ is_egress);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir, u64 *cnt)
+{
+ char ricnt_pl[MLXSW_REG_RICNT_LEN];
+ unsigned int *p_counter_index;
+ bool valid;
+ int err;
+
+ valid = mlxsw_sp_rif_counter_valid_get(rif, dir);
+ if (!valid)
+ return -EINVAL;
+
+ p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
+ if (!p_counter_index)
+ return -EINVAL;
+ mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index,
+ MLXSW_REG_RICNT_OPCODE_NOP);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl);
+ if (err)
+ return err;
+ *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl);
+ return 0;
+}
+
+struct mlxsw_sp_rif_counter_set_basic {
+ u64 good_unicast_packets;
+ u64 good_multicast_packets;
+ u64 good_broadcast_packets;
+ u64 good_unicast_bytes;
+ u64 good_multicast_bytes;
+ u64 good_broadcast_bytes;
+ u64 error_packets;
+ u64 discard_packets;
+ u64 error_bytes;
+ u64 discard_bytes;
+};
+
+static int
+mlxsw_sp_rif_counter_fetch_clear(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir,
+ struct mlxsw_sp_rif_counter_set_basic *set)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ char ricnt_pl[MLXSW_REG_RICNT_LEN];
+ unsigned int *p_counter_index;
+ int err;
+
+ if (!mlxsw_sp_rif_counter_valid_get(rif, dir))
+ return -EINVAL;
+
+ p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
+ if (!p_counter_index)
+ return -EINVAL;
+
+ mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index,
+ MLXSW_REG_RICNT_OPCODE_CLEAR);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl);
+ if (err)
+ return err;
+
+ if (!set)
+ return 0;
+
+#define MLXSW_SP_RIF_COUNTER_EXTRACT(NAME) \
+ (set->NAME = mlxsw_reg_ricnt_ ## NAME ## _get(ricnt_pl))
+
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_unicast_packets);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_multicast_packets);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_broadcast_packets);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_unicast_bytes);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_multicast_bytes);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(good_broadcast_bytes);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(error_packets);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(discard_packets);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(error_bytes);
+ MLXSW_SP_RIF_COUNTER_EXTRACT(discard_bytes);
+
+#undef MLXSW_SP_RIF_COUNTER_EXTRACT
+
+ return 0;
+}
+
+static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp,
+ unsigned int counter_index)
+{
+ char ricnt_pl[MLXSW_REG_RICNT_LEN];
+
+ mlxsw_reg_ricnt_pack(ricnt_pl, counter_index,
+ MLXSW_REG_RICNT_OPCODE_CLEAR);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl);
+}
+
+int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ unsigned int *p_counter_index;
+ int err;
+
+ if (mlxsw_sp_rif_counter_valid_get(rif, dir))
+ return 0;
+
+ p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
+ if (!p_counter_index)
+ return -EINVAL;
+
+ err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
+ p_counter_index);
+ if (err)
+ return err;
+
+ err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index);
+ if (err)
+ goto err_counter_clear;
+
+ err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index,
+ *p_counter_index, true, dir);
+ if (err)
+ goto err_counter_edit;
+ mlxsw_sp_rif_counter_valid_set(rif, dir, true);
+ return 0;
+
+err_counter_edit:
+err_counter_clear:
+ mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
+ *p_counter_index);
+ return err;
+}
+
+void mlxsw_sp_rif_counter_free(struct mlxsw_sp_rif *rif,
+ enum mlxsw_sp_rif_counter_dir dir)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ unsigned int *p_counter_index;
+
+ if (!mlxsw_sp_rif_counter_valid_get(rif, dir))
+ return;
+
+ p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir);
+ if (WARN_ON(!p_counter_index))
+ return;
+ mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index,
+ *p_counter_index, false, dir);
+ mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF,
+ *p_counter_index);
+ mlxsw_sp_rif_counter_valid_set(rif, dir, false);
+}
+
+static void mlxsw_sp_rif_counters_alloc(struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct devlink *devlink;
+
+ devlink = priv_to_devlink(mlxsw_sp->core);
+ if (!devlink_dpipe_table_counter_enabled(devlink,
+ MLXSW_SP_DPIPE_TABLE_NAME_ERIF))
+ return;
+ mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_EGRESS);
+}
+
+static void mlxsw_sp_rif_counters_free(struct mlxsw_sp_rif *rif)
+{
+ mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS);
+}
+
+#define MLXSW_SP_PREFIX_COUNT (sizeof(struct in6_addr) * BITS_PER_BYTE + 1)
+
+struct mlxsw_sp_prefix_usage {
+ DECLARE_BITMAP(b, MLXSW_SP_PREFIX_COUNT);
+};
+
+#define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \
+ for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT)
+
+static bool
+mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1,
+ struct mlxsw_sp_prefix_usage *prefix_usage2)
+{
+ return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
+}
+
+static void
+mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1,
+ struct mlxsw_sp_prefix_usage *prefix_usage2)
+{
+ memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1));
+}
+
+static void
+mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage,
+ unsigned char prefix_len)
+{
+ set_bit(prefix_len, prefix_usage->b);
+}
+
+static void
+mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage,
+ unsigned char prefix_len)
+{
+ clear_bit(prefix_len, prefix_usage->b);
+}
+
+struct mlxsw_sp_fib_key {
+ unsigned char addr[sizeof(struct in6_addr)];
+ unsigned char prefix_len;
+};
+
+enum mlxsw_sp_fib_entry_type {
+ MLXSW_SP_FIB_ENTRY_TYPE_REMOTE,
+ MLXSW_SP_FIB_ENTRY_TYPE_LOCAL,
+ MLXSW_SP_FIB_ENTRY_TYPE_TRAP,
+ MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE,
+ MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE,
+
+ /* This is a special case of local delivery, where a packet should be
+ * decapsulated on reception. Note that there is no corresponding ENCAP,
+ * because that's a type of next hop, not of FIB entry. (There can be
+ * several next hops in a REMOTE entry, and some of them may be
+ * encapsulating entries.)
+ */
+ MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP,
+ MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP,
+};
+
+struct mlxsw_sp_nexthop_group_info;
+struct mlxsw_sp_nexthop_group;
+struct mlxsw_sp_fib_entry;
+
+struct mlxsw_sp_fib_node {
+ struct mlxsw_sp_fib_entry *fib_entry;
+ struct list_head list;
+ struct rhash_head ht_node;
+ struct mlxsw_sp_fib *fib;
+ struct mlxsw_sp_fib_key key;
+};
+
+struct mlxsw_sp_fib_entry_decap {
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ u32 tunnel_index;
+};
+
+struct mlxsw_sp_fib_entry {
+ struct mlxsw_sp_fib_node *fib_node;
+ enum mlxsw_sp_fib_entry_type type;
+ struct list_head nexthop_group_node;
+ struct mlxsw_sp_nexthop_group *nh_group;
+ struct mlxsw_sp_fib_entry_decap decap; /* Valid for decap entries. */
+};
+
+struct mlxsw_sp_fib4_entry {
+ struct mlxsw_sp_fib_entry common;
+ struct fib_info *fi;
+ u32 tb_id;
+ dscp_t dscp;
+ u8 type;
+};
+
+struct mlxsw_sp_fib6_entry {
+ struct mlxsw_sp_fib_entry common;
+ struct list_head rt6_list;
+ unsigned int nrt6;
+};
+
+struct mlxsw_sp_rt6 {
+ struct list_head list;
+ struct fib6_info *rt;
+};
+
+struct mlxsw_sp_lpm_tree {
+ u8 id; /* tree ID */
+ unsigned int ref_count;
+ enum mlxsw_sp_l3proto proto;
+ unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT];
+ struct mlxsw_sp_prefix_usage prefix_usage;
+};
+
+struct mlxsw_sp_fib {
+ struct rhashtable ht;
+ struct list_head node_list;
+ struct mlxsw_sp_vr *vr;
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ enum mlxsw_sp_l3proto proto;
+};
+
+struct mlxsw_sp_vr {
+ u16 id; /* virtual router ID */
+ u32 tb_id; /* kernel fib table id */
+ unsigned int rif_count;
+ struct mlxsw_sp_fib *fib4;
+ struct mlxsw_sp_fib *fib6;
+ struct mlxsw_sp_mr_table *mr_table[MLXSW_SP_L3_PROTO_MAX];
+ struct mlxsw_sp_rif *ul_rif;
+ refcount_t ul_rif_refcnt;
+};
+
+static const struct rhashtable_params mlxsw_sp_fib_ht_params;
+
+static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_vr *vr,
+ enum mlxsw_sp_l3proto proto)
+{
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ struct mlxsw_sp_fib *fib;
+ int err;
+
+ lpm_tree = mlxsw_sp->router->lpm.proto_trees[proto];
+ fib = kzalloc(sizeof(*fib), GFP_KERNEL);
+ if (!fib)
+ return ERR_PTR(-ENOMEM);
+ err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params);
+ if (err)
+ goto err_rhashtable_init;
+ INIT_LIST_HEAD(&fib->node_list);
+ fib->proto = proto;
+ fib->vr = vr;
+ fib->lpm_tree = lpm_tree;
+ mlxsw_sp_lpm_tree_hold(lpm_tree);
+ err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, lpm_tree->id);
+ if (err)
+ goto err_lpm_tree_bind;
+ return fib;
+
+err_lpm_tree_bind:
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+err_rhashtable_init:
+ kfree(fib);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_fib_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib *fib)
+{
+ mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib);
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, fib->lpm_tree);
+ WARN_ON(!list_empty(&fib->node_list));
+ rhashtable_destroy(&fib->ht);
+ kfree(fib);
+}
+
+static struct mlxsw_sp_lpm_tree *
+mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp)
+{
+ static struct mlxsw_sp_lpm_tree *lpm_tree;
+ int i;
+
+ for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
+ lpm_tree = &mlxsw_sp->router->lpm.trees[i];
+ if (lpm_tree->ref_count == 0)
+ return lpm_tree;
+ }
+ return NULL;
+}
+
+static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ char ralta_pl[MLXSW_REG_RALTA_LEN];
+
+ mlxsw_reg_ralta_pack(ralta_pl, true,
+ (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
+ lpm_tree->id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
+}
+
+static void mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ char ralta_pl[MLXSW_REG_RALTA_LEN];
+
+ mlxsw_reg_ralta_pack(ralta_pl, false,
+ (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto,
+ lpm_tree->id);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl);
+}
+
+static int
+mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_prefix_usage *prefix_usage,
+ struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ char ralst_pl[MLXSW_REG_RALST_LEN];
+ u8 root_bin = 0;
+ u8 prefix;
+ u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD;
+
+ mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage)
+ root_bin = prefix;
+
+ mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id);
+ mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) {
+ if (prefix == 0)
+ continue;
+ mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix,
+ MLXSW_REG_RALST_BIN_NO_CHILD);
+ last_prefix = prefix;
+ }
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl);
+}
+
+static struct mlxsw_sp_lpm_tree *
+mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_prefix_usage *prefix_usage,
+ enum mlxsw_sp_l3proto proto)
+{
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ int err;
+
+ lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp);
+ if (!lpm_tree)
+ return ERR_PTR(-EBUSY);
+ lpm_tree->proto = proto;
+ err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree);
+ if (err)
+ return ERR_PTR(err);
+
+ err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage,
+ lpm_tree);
+ if (err)
+ goto err_left_struct_set;
+ memcpy(&lpm_tree->prefix_usage, prefix_usage,
+ sizeof(lpm_tree->prefix_usage));
+ memset(&lpm_tree->prefix_ref_count, 0,
+ sizeof(lpm_tree->prefix_ref_count));
+ lpm_tree->ref_count = 1;
+ return lpm_tree;
+
+err_left_struct_set:
+ mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree);
+}
+
+static struct mlxsw_sp_lpm_tree *
+mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_prefix_usage *prefix_usage,
+ enum mlxsw_sp_l3proto proto)
+{
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ int i;
+
+ for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
+ lpm_tree = &mlxsw_sp->router->lpm.trees[i];
+ if (lpm_tree->ref_count != 0 &&
+ lpm_tree->proto == proto &&
+ mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage,
+ prefix_usage)) {
+ mlxsw_sp_lpm_tree_hold(lpm_tree);
+ return lpm_tree;
+ }
+ }
+ return mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, proto);
+}
+
+static void mlxsw_sp_lpm_tree_hold(struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ lpm_tree->ref_count++;
+}
+
+static void mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_lpm_tree *lpm_tree)
+{
+ if (--lpm_tree->ref_count == 0)
+ mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree);
+}
+
+#define MLXSW_SP_LPM_TREE_MIN 1 /* tree 0 is reserved */
+
+static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_prefix_usage req_prefix_usage = {{ 0 } };
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ u64 max_trees;
+ int err, i;
+
+ if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES))
+ return -EIO;
+
+ max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES);
+ mlxsw_sp->router->lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN;
+ mlxsw_sp->router->lpm.trees = kcalloc(mlxsw_sp->router->lpm.tree_count,
+ sizeof(struct mlxsw_sp_lpm_tree),
+ GFP_KERNEL);
+ if (!mlxsw_sp->router->lpm.trees)
+ return -ENOMEM;
+
+ for (i = 0; i < mlxsw_sp->router->lpm.tree_count; i++) {
+ lpm_tree = &mlxsw_sp->router->lpm.trees[i];
+ lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN;
+ }
+
+ lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
+ MLXSW_SP_L3_PROTO_IPV4);
+ if (IS_ERR(lpm_tree)) {
+ err = PTR_ERR(lpm_tree);
+ goto err_ipv4_tree_get;
+ }
+ mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4] = lpm_tree;
+
+ lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
+ MLXSW_SP_L3_PROTO_IPV6);
+ if (IS_ERR(lpm_tree)) {
+ err = PTR_ERR(lpm_tree);
+ goto err_ipv6_tree_get;
+ }
+ mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV6] = lpm_tree;
+
+ return 0;
+
+err_ipv6_tree_get:
+ lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4];
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+err_ipv4_tree_get:
+ kfree(mlxsw_sp->router->lpm.trees);
+ return err;
+}
+
+static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+
+ lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV6];
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+
+ lpm_tree = mlxsw_sp->router->lpm.proto_trees[MLXSW_SP_L3_PROTO_IPV4];
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+
+ kfree(mlxsw_sp->router->lpm.trees);
+}
+
+static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr)
+{
+ return !!vr->fib4 || !!vr->fib6 ||
+ !!vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] ||
+ !!vr->mr_table[MLXSW_SP_L3_PROTO_IPV6];
+}
+
+static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_vr *vr;
+ int i;
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
+ vr = &mlxsw_sp->router->vrs[i];
+ if (!mlxsw_sp_vr_is_used(vr))
+ return vr;
+ }
+ return NULL;
+}
+
+static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_fib *fib, u8 tree_id)
+{
+ char raltb_pl[MLXSW_REG_RALTB_LEN];
+
+ mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
+ (enum mlxsw_reg_ralxx_protocol) fib->proto,
+ tree_id);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
+}
+
+static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_fib *fib)
+{
+ char raltb_pl[MLXSW_REG_RALTB_LEN];
+
+ /* Bind to tree 0 which is default */
+ mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id,
+ (enum mlxsw_reg_ralxx_protocol) fib->proto, 0);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl);
+}
+
+static u32 mlxsw_sp_fix_tb_id(u32 tb_id)
+{
+ /* For our purpose, squash main, default and local tables into one */
+ if (tb_id == RT_TABLE_LOCAL || tb_id == RT_TABLE_DEFAULT)
+ tb_id = RT_TABLE_MAIN;
+ return tb_id;
+}
+
+static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp,
+ u32 tb_id)
+{
+ struct mlxsw_sp_vr *vr;
+ int i;
+
+ tb_id = mlxsw_sp_fix_tb_id(tb_id);
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
+ vr = &mlxsw_sp->router->vrs[i];
+ if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id)
+ return vr;
+ }
+ return NULL;
+}
+
+int mlxsw_sp_router_tb_id_vr_id(struct mlxsw_sp *mlxsw_sp, u32 tb_id,
+ u16 *vr_id)
+{
+ struct mlxsw_sp_vr *vr;
+ int err = 0;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id);
+ if (!vr) {
+ err = -ESRCH;
+ goto out;
+ }
+ *vr_id = vr->id;
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return err;
+}
+
+static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr,
+ enum mlxsw_sp_l3proto proto)
+{
+ switch (proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ return vr->fib4;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ return vr->fib6;
+ }
+ return NULL;
+}
+
+static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp,
+ u32 tb_id,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_mr_table *mr4_table, *mr6_table;
+ struct mlxsw_sp_fib *fib4;
+ struct mlxsw_sp_fib *fib6;
+ struct mlxsw_sp_vr *vr;
+ int err;
+
+ vr = mlxsw_sp_vr_find_unused(mlxsw_sp);
+ if (!vr) {
+ NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported virtual routers");
+ return ERR_PTR(-EBUSY);
+ }
+ fib4 = mlxsw_sp_fib_create(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4);
+ if (IS_ERR(fib4))
+ return ERR_CAST(fib4);
+ fib6 = mlxsw_sp_fib_create(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6);
+ if (IS_ERR(fib6)) {
+ err = PTR_ERR(fib6);
+ goto err_fib6_create;
+ }
+ mr4_table = mlxsw_sp_mr_table_create(mlxsw_sp, vr->id,
+ MLXSW_SP_L3_PROTO_IPV4);
+ if (IS_ERR(mr4_table)) {
+ err = PTR_ERR(mr4_table);
+ goto err_mr4_table_create;
+ }
+ mr6_table = mlxsw_sp_mr_table_create(mlxsw_sp, vr->id,
+ MLXSW_SP_L3_PROTO_IPV6);
+ if (IS_ERR(mr6_table)) {
+ err = PTR_ERR(mr6_table);
+ goto err_mr6_table_create;
+ }
+
+ vr->fib4 = fib4;
+ vr->fib6 = fib6;
+ vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] = mr4_table;
+ vr->mr_table[MLXSW_SP_L3_PROTO_IPV6] = mr6_table;
+ vr->tb_id = tb_id;
+ return vr;
+
+err_mr6_table_create:
+ mlxsw_sp_mr_table_destroy(mr4_table);
+err_mr4_table_create:
+ mlxsw_sp_fib_destroy(mlxsw_sp, fib6);
+err_fib6_create:
+ mlxsw_sp_fib_destroy(mlxsw_sp, fib4);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_vr_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_vr *vr)
+{
+ mlxsw_sp_mr_table_destroy(vr->mr_table[MLXSW_SP_L3_PROTO_IPV6]);
+ vr->mr_table[MLXSW_SP_L3_PROTO_IPV6] = NULL;
+ mlxsw_sp_mr_table_destroy(vr->mr_table[MLXSW_SP_L3_PROTO_IPV4]);
+ vr->mr_table[MLXSW_SP_L3_PROTO_IPV4] = NULL;
+ mlxsw_sp_fib_destroy(mlxsw_sp, vr->fib6);
+ vr->fib6 = NULL;
+ mlxsw_sp_fib_destroy(mlxsw_sp, vr->fib4);
+ vr->fib4 = NULL;
+}
+
+static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_vr *vr;
+
+ tb_id = mlxsw_sp_fix_tb_id(tb_id);
+ vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id);
+ if (!vr)
+ vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id, extack);
+ return vr;
+}
+
+static void mlxsw_sp_vr_put(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_vr *vr)
+{
+ if (!vr->rif_count && list_empty(&vr->fib4->node_list) &&
+ list_empty(&vr->fib6->node_list) &&
+ mlxsw_sp_mr_table_empty(vr->mr_table[MLXSW_SP_L3_PROTO_IPV4]) &&
+ mlxsw_sp_mr_table_empty(vr->mr_table[MLXSW_SP_L3_PROTO_IPV6]))
+ mlxsw_sp_vr_destroy(mlxsw_sp, vr);
+}
+
+static bool
+mlxsw_sp_vr_lpm_tree_should_replace(struct mlxsw_sp_vr *vr,
+ enum mlxsw_sp_l3proto proto, u8 tree_id)
+{
+ struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto);
+
+ if (!mlxsw_sp_vr_is_used(vr))
+ return false;
+ if (fib->lpm_tree->id == tree_id)
+ return true;
+ return false;
+}
+
+static int mlxsw_sp_vr_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib *fib,
+ struct mlxsw_sp_lpm_tree *new_tree)
+{
+ struct mlxsw_sp_lpm_tree *old_tree = fib->lpm_tree;
+ int err;
+
+ fib->lpm_tree = new_tree;
+ mlxsw_sp_lpm_tree_hold(new_tree);
+ err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib, new_tree->id);
+ if (err)
+ goto err_tree_bind;
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree);
+ return 0;
+
+err_tree_bind:
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree);
+ fib->lpm_tree = old_tree;
+ return err;
+}
+
+static int mlxsw_sp_vrs_lpm_tree_replace(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib *fib,
+ struct mlxsw_sp_lpm_tree *new_tree)
+{
+ enum mlxsw_sp_l3proto proto = fib->proto;
+ struct mlxsw_sp_lpm_tree *old_tree;
+ u8 old_id, new_id = new_tree->id;
+ struct mlxsw_sp_vr *vr;
+ int i, err;
+
+ old_tree = mlxsw_sp->router->lpm.proto_trees[proto];
+ old_id = old_tree->id;
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
+ vr = &mlxsw_sp->router->vrs[i];
+ if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, old_id))
+ continue;
+ err = mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp,
+ mlxsw_sp_vr_fib(vr, proto),
+ new_tree);
+ if (err)
+ goto err_tree_replace;
+ }
+
+ memcpy(new_tree->prefix_ref_count, old_tree->prefix_ref_count,
+ sizeof(new_tree->prefix_ref_count));
+ mlxsw_sp->router->lpm.proto_trees[proto] = new_tree;
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, old_tree);
+
+ return 0;
+
+err_tree_replace:
+ for (i--; i >= 0; i--) {
+ if (!mlxsw_sp_vr_lpm_tree_should_replace(vr, proto, new_id))
+ continue;
+ mlxsw_sp_vr_lpm_tree_replace(mlxsw_sp,
+ mlxsw_sp_vr_fib(vr, proto),
+ old_tree);
+ }
+ return err;
+}
+
+static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_vr *vr;
+ u64 max_vrs;
+ int i;
+
+ if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS))
+ return -EIO;
+
+ max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS);
+ mlxsw_sp->router->vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr),
+ GFP_KERNEL);
+ if (!mlxsw_sp->router->vrs)
+ return -ENOMEM;
+
+ for (i = 0; i < max_vrs; i++) {
+ vr = &mlxsw_sp->router->vrs[i];
+ vr->id = i;
+ }
+
+ return 0;
+}
+
+static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp);
+
+static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ /* At this stage we're guaranteed not to have new incoming
+ * FIB notifications and the work queue is free from FIBs
+ * sitting on top of mlxsw netdevs. However, we can still
+ * have other FIBs queued. Flush the queue before flushing
+ * the device's tables. No need for locks, as we're the only
+ * writer.
+ */
+ mlxsw_core_flush_owq();
+ mlxsw_sp_router_fib_flush(mlxsw_sp);
+ kfree(mlxsw_sp->router->vrs);
+}
+
+u32 mlxsw_sp_ipip_dev_ul_tb_id(const struct net_device *ol_dev)
+{
+ struct net_device *d;
+ u32 tb_id;
+
+ rcu_read_lock();
+ d = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev);
+ if (d)
+ tb_id = l3mdev_fib_table(d) ? : RT_TABLE_MAIN;
+ else
+ tb_id = RT_TABLE_MAIN;
+ rcu_read_unlock();
+
+ return tb_id;
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_rif_params *params,
+ struct netlink_ext_ack *extack);
+
+static struct mlxsw_sp_rif_ipip_lb *
+mlxsw_sp_ipip_ol_ipip_lb_create(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_ipip_type ipipt,
+ struct net_device *ol_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_params_ipip_lb lb_params;
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ struct mlxsw_sp_rif *rif;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt];
+ lb_params = (struct mlxsw_sp_rif_params_ipip_lb) {
+ .common.dev = ol_dev,
+ .common.lag = false,
+ .lb_config = ipip_ops->ol_loopback_config(mlxsw_sp, ol_dev),
+ };
+
+ rif = mlxsw_sp_rif_create(mlxsw_sp, &lb_params.common, extack);
+ if (IS_ERR(rif))
+ return ERR_CAST(rif);
+ return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common);
+}
+
+static struct mlxsw_sp_ipip_entry *
+mlxsw_sp_ipip_entry_alloc(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_ipip_type ipipt,
+ struct net_device *ol_dev)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ struct mlxsw_sp_ipip_entry *ret = NULL;
+ int err;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt];
+ ipip_entry = kzalloc(sizeof(*ipip_entry), GFP_KERNEL);
+ if (!ipip_entry)
+ return ERR_PTR(-ENOMEM);
+
+ ipip_entry->ol_lb = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp, ipipt,
+ ol_dev, NULL);
+ if (IS_ERR(ipip_entry->ol_lb)) {
+ ret = ERR_CAST(ipip_entry->ol_lb);
+ goto err_ol_ipip_lb_create;
+ }
+
+ ipip_entry->ipipt = ipipt;
+ ipip_entry->ol_dev = ol_dev;
+ ipip_entry->parms = ipip_ops->parms_init(ol_dev);
+
+ err = ipip_ops->rem_ip_addr_set(mlxsw_sp, ipip_entry);
+ if (err) {
+ ret = ERR_PTR(err);
+ goto err_rem_ip_addr_set;
+ }
+
+ return ipip_entry;
+
+err_rem_ip_addr_set:
+ mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common);
+err_ol_ipip_lb_create:
+ kfree(ipip_entry);
+ return ret;
+}
+
+static void mlxsw_sp_ipip_entry_dealloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops =
+ mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt];
+
+ ipip_ops->rem_ip_addr_unset(mlxsw_sp, ipip_entry);
+ mlxsw_sp_rif_destroy(&ipip_entry->ol_lb->common);
+ kfree(ipip_entry);
+}
+
+static bool
+mlxsw_sp_ipip_entry_saddr_matches(struct mlxsw_sp *mlxsw_sp,
+ const enum mlxsw_sp_l3proto ul_proto,
+ union mlxsw_sp_l3addr saddr,
+ u32 ul_tb_id,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ u32 tun_ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev);
+ enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt;
+ union mlxsw_sp_l3addr tun_saddr;
+
+ if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto)
+ return false;
+
+ tun_saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ipip_entry->ol_dev);
+ return tun_ul_tb_id == ul_tb_id &&
+ mlxsw_sp_l3addr_eq(&tun_saddr, &saddr);
+}
+
+static int mlxsw_sp_ipip_decap_parsing_depth_inc(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_ipip_type ipipt)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipipt];
+
+ /* Not all tunnels require to increase the default pasing depth
+ * (96 bytes).
+ */
+ if (ipip_ops->inc_parsing_depth)
+ return mlxsw_sp_parsing_depth_inc(mlxsw_sp);
+
+ return 0;
+}
+
+static void mlxsw_sp_ipip_decap_parsing_depth_dec(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_ipip_type ipipt)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops =
+ mlxsw_sp->router->ipip_ops_arr[ipipt];
+
+ if (ipip_ops->inc_parsing_depth)
+ mlxsw_sp_parsing_depth_dec(mlxsw_sp);
+}
+
+static int
+mlxsw_sp_fib_entry_decap_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ u32 tunnel_index;
+ int err;
+
+ err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ 1, &tunnel_index);
+ if (err)
+ return err;
+
+ err = mlxsw_sp_ipip_decap_parsing_depth_inc(mlxsw_sp,
+ ipip_entry->ipipt);
+ if (err)
+ goto err_parsing_depth_inc;
+
+ ipip_entry->decap_fib_entry = fib_entry;
+ fib_entry->decap.ipip_entry = ipip_entry;
+ fib_entry->decap.tunnel_index = tunnel_index;
+
+ return 0;
+
+err_parsing_depth_inc:
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+ fib_entry->decap.tunnel_index);
+ return err;
+}
+
+static void mlxsw_sp_fib_entry_decap_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ enum mlxsw_sp_ipip_type ipipt = fib_entry->decap.ipip_entry->ipipt;
+
+ /* Unlink this node from the IPIP entry that it's the decap entry of. */
+ fib_entry->decap.ipip_entry->decap_fib_entry = NULL;
+ fib_entry->decap.ipip_entry = NULL;
+ mlxsw_sp_ipip_decap_parsing_depth_dec(mlxsw_sp, ipipt);
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ 1, fib_entry->decap.tunnel_index);
+}
+
+static struct mlxsw_sp_fib_node *
+mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr,
+ size_t addr_len, unsigned char prefix_len);
+static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry);
+
+static void
+mlxsw_sp_ipip_entry_demote_decap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ struct mlxsw_sp_fib_entry *fib_entry = ipip_entry->decap_fib_entry;
+
+ mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, fib_entry);
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+
+ mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+}
+
+static void
+mlxsw_sp_ipip_entry_promote_decap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ struct mlxsw_sp_fib_entry *decap_fib_entry)
+{
+ if (mlxsw_sp_fib_entry_decap_init(mlxsw_sp, decap_fib_entry,
+ ipip_entry))
+ return;
+ decap_fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP;
+
+ if (mlxsw_sp_fib_entry_update(mlxsw_sp, decap_fib_entry))
+ mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry);
+}
+
+static struct mlxsw_sp_fib_entry *
+mlxsw_sp_router_ip2me_fib_entry_find(struct mlxsw_sp *mlxsw_sp, u32 tb_id,
+ enum mlxsw_sp_l3proto proto,
+ const union mlxsw_sp_l3addr *addr,
+ enum mlxsw_sp_fib_entry_type type)
+{
+ struct mlxsw_sp_fib_node *fib_node;
+ unsigned char addr_prefix_len;
+ struct mlxsw_sp_fib *fib;
+ struct mlxsw_sp_vr *vr;
+ const void *addrp;
+ size_t addr_len;
+ u32 addr4;
+
+ vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id);
+ if (!vr)
+ return NULL;
+ fib = mlxsw_sp_vr_fib(vr, proto);
+
+ switch (proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ addr4 = be32_to_cpu(addr->addr4);
+ addrp = &addr4;
+ addr_len = 4;
+ addr_prefix_len = 32;
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ addrp = &addr->addr6;
+ addr_len = 16;
+ addr_prefix_len = 128;
+ break;
+ default:
+ WARN_ON(1);
+ return NULL;
+ }
+
+ fib_node = mlxsw_sp_fib_node_lookup(fib, addrp, addr_len,
+ addr_prefix_len);
+ if (!fib_node || fib_node->fib_entry->type != type)
+ return NULL;
+
+ return fib_node->fib_entry;
+}
+
+/* Given an IPIP entry, find the corresponding decap route. */
+static struct mlxsw_sp_fib_entry *
+mlxsw_sp_ipip_entry_find_decap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ static struct mlxsw_sp_fib_node *fib_node;
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ unsigned char saddr_prefix_len;
+ union mlxsw_sp_l3addr saddr;
+ struct mlxsw_sp_fib *ul_fib;
+ struct mlxsw_sp_vr *ul_vr;
+ const void *saddrp;
+ size_t saddr_len;
+ u32 ul_tb_id;
+ u32 saddr4;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt];
+
+ ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ipip_entry->ol_dev);
+ ul_vr = mlxsw_sp_vr_find(mlxsw_sp, ul_tb_id);
+ if (!ul_vr)
+ return NULL;
+
+ ul_fib = mlxsw_sp_vr_fib(ul_vr, ipip_ops->ul_proto);
+ saddr = mlxsw_sp_ipip_netdev_saddr(ipip_ops->ul_proto,
+ ipip_entry->ol_dev);
+
+ switch (ipip_ops->ul_proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ saddr4 = be32_to_cpu(saddr.addr4);
+ saddrp = &saddr4;
+ saddr_len = 4;
+ saddr_prefix_len = 32;
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ saddrp = &saddr.addr6;
+ saddr_len = 16;
+ saddr_prefix_len = 128;
+ break;
+ default:
+ WARN_ON(1);
+ return NULL;
+ }
+
+ fib_node = mlxsw_sp_fib_node_lookup(ul_fib, saddrp, saddr_len,
+ saddr_prefix_len);
+ if (!fib_node ||
+ fib_node->fib_entry->type != MLXSW_SP_FIB_ENTRY_TYPE_TRAP)
+ return NULL;
+
+ return fib_node->fib_entry;
+}
+
+static struct mlxsw_sp_ipip_entry *
+mlxsw_sp_ipip_entry_create(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_ipip_type ipipt,
+ struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ ipip_entry = mlxsw_sp_ipip_entry_alloc(mlxsw_sp, ipipt, ol_dev);
+ if (IS_ERR(ipip_entry))
+ return ipip_entry;
+
+ list_add_tail(&ipip_entry->ipip_list_node,
+ &mlxsw_sp->router->ipip_list);
+
+ return ipip_entry;
+}
+
+static void
+mlxsw_sp_ipip_entry_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ list_del(&ipip_entry->ipip_list_node);
+ mlxsw_sp_ipip_entry_dealloc(mlxsw_sp, ipip_entry);
+}
+
+static bool
+mlxsw_sp_ipip_entry_matches_decap(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *ul_dev,
+ enum mlxsw_sp_l3proto ul_proto,
+ union mlxsw_sp_l3addr ul_dip,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ u32 ul_tb_id = l3mdev_fib_table(ul_dev) ? : RT_TABLE_MAIN;
+ enum mlxsw_sp_ipip_type ipipt = ipip_entry->ipipt;
+
+ if (mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto != ul_proto)
+ return false;
+
+ return mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, ul_dip,
+ ul_tb_id, ipip_entry);
+}
+
+/* Given decap parameters, find the corresponding IPIP entry. */
+static struct mlxsw_sp_ipip_entry *
+mlxsw_sp_ipip_entry_find_by_decap(struct mlxsw_sp *mlxsw_sp, int ul_dev_ifindex,
+ enum mlxsw_sp_l3proto ul_proto,
+ union mlxsw_sp_l3addr ul_dip)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry = NULL;
+ struct net_device *ul_dev;
+
+ rcu_read_lock();
+
+ ul_dev = dev_get_by_index_rcu(mlxsw_sp_net(mlxsw_sp), ul_dev_ifindex);
+ if (!ul_dev)
+ goto out_unlock;
+
+ list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list,
+ ipip_list_node)
+ if (mlxsw_sp_ipip_entry_matches_decap(mlxsw_sp, ul_dev,
+ ul_proto, ul_dip,
+ ipip_entry))
+ goto out_unlock;
+
+ rcu_read_unlock();
+
+ return NULL;
+
+out_unlock:
+ rcu_read_unlock();
+ return ipip_entry;
+}
+
+static bool mlxsw_sp_netdev_ipip_type(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev,
+ enum mlxsw_sp_ipip_type *p_type)
+{
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ enum mlxsw_sp_ipip_type ipipt;
+
+ for (ipipt = 0; ipipt < MLXSW_SP_IPIP_TYPE_MAX; ++ipipt) {
+ ipip_ops = router->ipip_ops_arr[ipipt];
+ if (dev->type == ipip_ops->dev_type) {
+ if (p_type)
+ *p_type = ipipt;
+ return true;
+ }
+ }
+ return false;
+}
+
+static bool mlxsw_sp_netdev_is_ipip_ol(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev)
+{
+ return mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL);
+}
+
+static struct mlxsw_sp_ipip_entry *
+mlxsw_sp_ipip_entry_find_by_ol_dev(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ list_for_each_entry(ipip_entry, &mlxsw_sp->router->ipip_list,
+ ipip_list_node)
+ if (ipip_entry->ol_dev == ol_dev)
+ return ipip_entry;
+
+ return NULL;
+}
+
+static struct mlxsw_sp_ipip_entry *
+mlxsw_sp_ipip_entry_find_by_ul_dev(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *ul_dev,
+ struct mlxsw_sp_ipip_entry *start)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ ipip_entry = list_prepare_entry(start, &mlxsw_sp->router->ipip_list,
+ ipip_list_node);
+ list_for_each_entry_continue(ipip_entry, &mlxsw_sp->router->ipip_list,
+ ipip_list_node) {
+ struct net_device *ol_dev = ipip_entry->ol_dev;
+ struct net_device *ipip_ul_dev;
+
+ rcu_read_lock();
+ ipip_ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev);
+ rcu_read_unlock();
+
+ if (ipip_ul_dev == ul_dev)
+ return ipip_entry;
+ }
+
+ return NULL;
+}
+
+static bool mlxsw_sp_netdev_is_ipip_ul(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev)
+{
+ return mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp, dev, NULL);
+}
+
+static bool mlxsw_sp_netdevice_ipip_can_offload(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *ol_dev,
+ enum mlxsw_sp_ipip_type ipipt)
+{
+ const struct mlxsw_sp_ipip_ops *ops
+ = mlxsw_sp->router->ipip_ops_arr[ipipt];
+
+ return ops->can_offload(mlxsw_sp, ol_dev);
+}
+
+static int mlxsw_sp_netdevice_ipip_ol_reg_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev)
+{
+ enum mlxsw_sp_ipip_type ipipt = MLXSW_SP_IPIP_TYPE_MAX;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ enum mlxsw_sp_l3proto ul_proto;
+ union mlxsw_sp_l3addr saddr;
+ u32 ul_tb_id;
+
+ mlxsw_sp_netdev_ipip_type(mlxsw_sp, ol_dev, &ipipt);
+ if (mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev, ipipt)) {
+ ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(ol_dev);
+ ul_proto = mlxsw_sp->router->ipip_ops_arr[ipipt]->ul_proto;
+ saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ol_dev);
+ if (!mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto,
+ saddr, ul_tb_id,
+ NULL)) {
+ ipip_entry = mlxsw_sp_ipip_entry_create(mlxsw_sp, ipipt,
+ ol_dev);
+ if (IS_ERR(ipip_entry))
+ return PTR_ERR(ipip_entry);
+ }
+ }
+
+ return 0;
+}
+
+static void mlxsw_sp_netdevice_ipip_ol_unreg_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+ if (ipip_entry)
+ mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry);
+}
+
+static void
+mlxsw_sp_ipip_entry_ol_up_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ struct mlxsw_sp_fib_entry *decap_fib_entry;
+
+ decap_fib_entry = mlxsw_sp_ipip_entry_find_decap(mlxsw_sp, ipip_entry);
+ if (decap_fib_entry)
+ mlxsw_sp_ipip_entry_promote_decap(mlxsw_sp, ipip_entry,
+ decap_fib_entry);
+}
+
+static int
+mlxsw_sp_rif_ipip_lb_op(struct mlxsw_sp_rif_ipip_lb *lb_rif, u16 ul_vr_id,
+ u16 ul_rif_id, bool enable)
+{
+ struct mlxsw_sp_rif_ipip_lb_config lb_cf = lb_rif->lb_config;
+ enum mlxsw_reg_ritr_loopback_ipip_options ipip_options;
+ struct mlxsw_sp_rif *rif = &lb_rif->common;
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ struct in6_addr *saddr6;
+ u32 saddr4;
+
+ ipip_options = MLXSW_REG_RITR_LOOPBACK_IPIP_OPTIONS_GRE_KEY_PRESET;
+ switch (lb_cf.ul_protocol) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ saddr4 = be32_to_cpu(lb_cf.saddr.addr4);
+ mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF,
+ rif->rif_index, rif->vr_id, rif->dev->mtu);
+ mlxsw_reg_ritr_loopback_ipip4_pack(ritr_pl, lb_cf.lb_ipipt,
+ ipip_options, ul_vr_id,
+ ul_rif_id, saddr4,
+ lb_cf.okey);
+ break;
+
+ case MLXSW_SP_L3_PROTO_IPV6:
+ saddr6 = &lb_cf.saddr.addr6;
+ mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF,
+ rif->rif_index, rif->vr_id, rif->dev->mtu);
+ mlxsw_reg_ritr_loopback_ipip6_pack(ritr_pl, lb_cf.lb_ipipt,
+ ipip_options, ul_vr_id,
+ ul_rif_id, saddr6,
+ lb_cf.okey);
+ break;
+ }
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static int mlxsw_sp_netdevice_ipip_ol_update_mtu(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ struct mlxsw_sp_rif_ipip_lb *lb_rif;
+ int err = 0;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+ if (ipip_entry) {
+ lb_rif = ipip_entry->ol_lb;
+ err = mlxsw_sp_rif_ipip_lb_op(lb_rif, lb_rif->ul_vr_id,
+ lb_rif->ul_rif_id, true);
+ if (err)
+ goto out;
+ lb_rif->common.mtu = ol_dev->mtu;
+ }
+
+out:
+ return err;
+}
+
+static void mlxsw_sp_netdevice_ipip_ol_up_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+ if (ipip_entry)
+ mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry);
+}
+
+static void
+mlxsw_sp_ipip_entry_ol_down_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ if (ipip_entry->decap_fib_entry)
+ mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry);
+}
+
+static void mlxsw_sp_netdevice_ipip_ol_down_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+ if (ipip_entry)
+ mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry);
+}
+
+static void mlxsw_sp_nexthop_rif_migrate(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *old_rif,
+ struct mlxsw_sp_rif *new_rif);
+static int
+mlxsw_sp_ipip_entry_ol_lb_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ bool keep_encap,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_ipip_lb *old_lb_rif = ipip_entry->ol_lb;
+ struct mlxsw_sp_rif_ipip_lb *new_lb_rif;
+
+ new_lb_rif = mlxsw_sp_ipip_ol_ipip_lb_create(mlxsw_sp,
+ ipip_entry->ipipt,
+ ipip_entry->ol_dev,
+ extack);
+ if (IS_ERR(new_lb_rif))
+ return PTR_ERR(new_lb_rif);
+ ipip_entry->ol_lb = new_lb_rif;
+
+ if (keep_encap)
+ mlxsw_sp_nexthop_rif_migrate(mlxsw_sp, &old_lb_rif->common,
+ &new_lb_rif->common);
+
+ mlxsw_sp_rif_destroy(&old_lb_rif->common);
+
+ return 0;
+}
+
+static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif);
+
+/**
+ * __mlxsw_sp_ipip_entry_update_tunnel - Update offload related to IPIP entry.
+ * @mlxsw_sp: mlxsw_sp.
+ * @ipip_entry: IPIP entry.
+ * @recreate_loopback: Recreates the associated loopback RIF.
+ * @keep_encap: Updates next hops that use the tunnel netdevice. This is only
+ * relevant when recreate_loopback is true.
+ * @update_nexthops: Updates next hops, keeping the current loopback RIF. This
+ * is only relevant when recreate_loopback is false.
+ * @extack: extack.
+ *
+ * Return: Non-zero value on failure.
+ */
+int __mlxsw_sp_ipip_entry_update_tunnel(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ bool recreate_loopback,
+ bool keep_encap,
+ bool update_nexthops,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ /* RIFs can't be edited, so to update loopback, we need to destroy and
+ * recreate it. That creates a window of opportunity where RALUE and
+ * RATR registers end up referencing a RIF that's already gone. RATRs
+ * are handled in mlxsw_sp_ipip_entry_ol_lb_update(), and to take care
+ * of RALUE, demote the decap route back.
+ */
+ if (ipip_entry->decap_fib_entry)
+ mlxsw_sp_ipip_entry_demote_decap(mlxsw_sp, ipip_entry);
+
+ if (recreate_loopback) {
+ err = mlxsw_sp_ipip_entry_ol_lb_update(mlxsw_sp, ipip_entry,
+ keep_encap, extack);
+ if (err)
+ return err;
+ } else if (update_nexthops) {
+ mlxsw_sp_nexthop_rif_update(mlxsw_sp,
+ &ipip_entry->ol_lb->common);
+ }
+
+ if (ipip_entry->ol_dev->flags & IFF_UP)
+ mlxsw_sp_ipip_entry_ol_up_event(mlxsw_sp, ipip_entry);
+
+ return 0;
+}
+
+static int mlxsw_sp_netdevice_ipip_ol_vrf_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry =
+ mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+
+ if (!ipip_entry)
+ return 0;
+
+ return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
+ true, false, false, extack);
+}
+
+static int
+mlxsw_sp_netdevice_ipip_ul_vrf_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ struct net_device *ul_dev,
+ bool *demote_this,
+ struct netlink_ext_ack *extack)
+{
+ u32 ul_tb_id = l3mdev_fib_table(ul_dev) ? : RT_TABLE_MAIN;
+ enum mlxsw_sp_l3proto ul_proto;
+ union mlxsw_sp_l3addr saddr;
+
+ /* Moving underlay to a different VRF might cause local address
+ * conflict, and the conflicting tunnels need to be demoted.
+ */
+ ul_proto = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt]->ul_proto;
+ saddr = mlxsw_sp_ipip_netdev_saddr(ul_proto, ipip_entry->ol_dev);
+ if (mlxsw_sp_ipip_demote_tunnel_by_saddr(mlxsw_sp, ul_proto,
+ saddr, ul_tb_id,
+ ipip_entry)) {
+ *demote_this = true;
+ return 0;
+ }
+
+ return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
+ true, true, false, extack);
+}
+
+static int
+mlxsw_sp_netdevice_ipip_ul_up_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ struct net_device *ul_dev)
+{
+ return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
+ false, false, true, NULL);
+}
+
+static int
+mlxsw_sp_netdevice_ipip_ul_down_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ struct net_device *ul_dev)
+{
+ /* A down underlay device causes encapsulated packets to not be
+ * forwarded, but decap still works. So refresh next hops without
+ * touching anything else.
+ */
+ return __mlxsw_sp_ipip_entry_update_tunnel(mlxsw_sp, ipip_entry,
+ false, false, true, NULL);
+}
+
+static int
+mlxsw_sp_netdevice_ipip_ol_change_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev,
+ struct netlink_ext_ack *extack)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ int err;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, ol_dev);
+ if (!ipip_entry)
+ /* A change might make a tunnel eligible for offloading, but
+ * that is currently not implemented. What falls to slow path
+ * stays there.
+ */
+ return 0;
+
+ /* A change might make a tunnel not eligible for offloading. */
+ if (!mlxsw_sp_netdevice_ipip_can_offload(mlxsw_sp, ol_dev,
+ ipip_entry->ipipt)) {
+ mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
+ return 0;
+ }
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt];
+ err = ipip_ops->ol_netdev_change(mlxsw_sp, ipip_entry, extack);
+ return err;
+}
+
+void mlxsw_sp_ipip_entry_demote_tunnel(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ struct net_device *ol_dev = ipip_entry->ol_dev;
+
+ if (ol_dev->flags & IFF_UP)
+ mlxsw_sp_ipip_entry_ol_down_event(mlxsw_sp, ipip_entry);
+ mlxsw_sp_ipip_entry_destroy(mlxsw_sp, ipip_entry);
+}
+
+/* The configuration where several tunnels have the same local address in the
+ * same underlay table needs special treatment in the HW. That is currently not
+ * implemented in the driver. This function finds and demotes the first tunnel
+ * with a given source address, except the one passed in the argument
+ * `except'.
+ */
+bool
+mlxsw_sp_ipip_demote_tunnel_by_saddr(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_l3proto ul_proto,
+ union mlxsw_sp_l3addr saddr,
+ u32 ul_tb_id,
+ const struct mlxsw_sp_ipip_entry *except)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry, *tmp;
+
+ list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list,
+ ipip_list_node) {
+ if (ipip_entry != except &&
+ mlxsw_sp_ipip_entry_saddr_matches(mlxsw_sp, ul_proto, saddr,
+ ul_tb_id, ipip_entry)) {
+ mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+static void mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ul_dev)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry, *tmp;
+
+ list_for_each_entry_safe(ipip_entry, tmp, &mlxsw_sp->router->ipip_list,
+ ipip_list_node) {
+ struct net_device *ol_dev = ipip_entry->ol_dev;
+ struct net_device *ipip_ul_dev;
+
+ rcu_read_lock();
+ ipip_ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev);
+ rcu_read_unlock();
+ if (ipip_ul_dev == ul_dev)
+ mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
+ }
+}
+
+static int mlxsw_sp_netdevice_ipip_ol_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ol_dev,
+ unsigned long event,
+ struct netdev_notifier_info *info)
+{
+ struct netdev_notifier_changeupper_info *chup;
+ struct netlink_ext_ack *extack;
+ int err = 0;
+
+ switch (event) {
+ case NETDEV_REGISTER:
+ err = mlxsw_sp_netdevice_ipip_ol_reg_event(mlxsw_sp, ol_dev);
+ break;
+ case NETDEV_UNREGISTER:
+ mlxsw_sp_netdevice_ipip_ol_unreg_event(mlxsw_sp, ol_dev);
+ break;
+ case NETDEV_UP:
+ mlxsw_sp_netdevice_ipip_ol_up_event(mlxsw_sp, ol_dev);
+ break;
+ case NETDEV_DOWN:
+ mlxsw_sp_netdevice_ipip_ol_down_event(mlxsw_sp, ol_dev);
+ break;
+ case NETDEV_CHANGEUPPER:
+ chup = container_of(info, typeof(*chup), info);
+ extack = info->extack;
+ if (netif_is_l3_master(chup->upper_dev))
+ err = mlxsw_sp_netdevice_ipip_ol_vrf_event(mlxsw_sp,
+ ol_dev,
+ extack);
+ break;
+ case NETDEV_CHANGE:
+ extack = info->extack;
+ err = mlxsw_sp_netdevice_ipip_ol_change_event(mlxsw_sp,
+ ol_dev, extack);
+ break;
+ case NETDEV_CHANGEMTU:
+ err = mlxsw_sp_netdevice_ipip_ol_update_mtu(mlxsw_sp, ol_dev);
+ break;
+ }
+ return err;
+}
+
+static int
+__mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_ipip_entry *ipip_entry,
+ struct net_device *ul_dev,
+ bool *demote_this,
+ unsigned long event,
+ struct netdev_notifier_info *info)
+{
+ struct netdev_notifier_changeupper_info *chup;
+ struct netlink_ext_ack *extack;
+
+ switch (event) {
+ case NETDEV_CHANGEUPPER:
+ chup = container_of(info, typeof(*chup), info);
+ extack = info->extack;
+ if (netif_is_l3_master(chup->upper_dev))
+ return mlxsw_sp_netdevice_ipip_ul_vrf_event(mlxsw_sp,
+ ipip_entry,
+ ul_dev,
+ demote_this,
+ extack);
+ break;
+
+ case NETDEV_UP:
+ return mlxsw_sp_netdevice_ipip_ul_up_event(mlxsw_sp, ipip_entry,
+ ul_dev);
+ case NETDEV_DOWN:
+ return mlxsw_sp_netdevice_ipip_ul_down_event(mlxsw_sp,
+ ipip_entry,
+ ul_dev);
+ }
+ return 0;
+}
+
+static int
+mlxsw_sp_netdevice_ipip_ul_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *ul_dev,
+ unsigned long event,
+ struct netdev_notifier_info *info)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry = NULL;
+ int err;
+
+ while ((ipip_entry = mlxsw_sp_ipip_entry_find_by_ul_dev(mlxsw_sp,
+ ul_dev,
+ ipip_entry))) {
+ struct mlxsw_sp_ipip_entry *prev;
+ bool demote_this = false;
+
+ err = __mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, ipip_entry,
+ ul_dev, &demote_this,
+ event, info);
+ if (err) {
+ mlxsw_sp_ipip_demote_tunnel_by_ul_netdev(mlxsw_sp,
+ ul_dev);
+ return err;
+ }
+
+ if (demote_this) {
+ if (list_is_first(&ipip_entry->ipip_list_node,
+ &mlxsw_sp->router->ipip_list))
+ prev = NULL;
+ else
+ /* This can't be cached from previous iteration,
+ * because that entry could be gone now.
+ */
+ prev = list_prev_entry(ipip_entry,
+ ipip_list_node);
+ mlxsw_sp_ipip_entry_demote_tunnel(mlxsw_sp, ipip_entry);
+ ipip_entry = prev;
+ }
+ }
+
+ return 0;
+}
+
+int mlxsw_sp_router_nve_promote_decap(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id,
+ enum mlxsw_sp_l3proto ul_proto,
+ const union mlxsw_sp_l3addr *ul_sip,
+ u32 tunnel_index)
+{
+ enum mlxsw_sp_fib_entry_type type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ struct mlxsw_sp_fib_entry *fib_entry;
+ int err = 0;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+
+ if (WARN_ON_ONCE(router->nve_decap_config.valid)) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ router->nve_decap_config.ul_tb_id = ul_tb_id;
+ router->nve_decap_config.tunnel_index = tunnel_index;
+ router->nve_decap_config.ul_proto = ul_proto;
+ router->nve_decap_config.ul_sip = *ul_sip;
+ router->nve_decap_config.valid = true;
+
+ /* It is valid to create a tunnel with a local IP and only later
+ * assign this IP address to a local interface
+ */
+ fib_entry = mlxsw_sp_router_ip2me_fib_entry_find(mlxsw_sp, ul_tb_id,
+ ul_proto, ul_sip,
+ type);
+ if (!fib_entry)
+ goto out;
+
+ fib_entry->decap.tunnel_index = tunnel_index;
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP;
+
+ err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+ if (err)
+ goto err_fib_entry_update;
+
+ goto out;
+
+err_fib_entry_update:
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return err;
+}
+
+void mlxsw_sp_router_nve_demote_decap(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id,
+ enum mlxsw_sp_l3proto ul_proto,
+ const union mlxsw_sp_l3addr *ul_sip)
+{
+ enum mlxsw_sp_fib_entry_type type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP;
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ struct mlxsw_sp_fib_entry *fib_entry;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+
+ if (WARN_ON_ONCE(!router->nve_decap_config.valid))
+ goto out;
+
+ router->nve_decap_config.valid = false;
+
+ fib_entry = mlxsw_sp_router_ip2me_fib_entry_find(mlxsw_sp, ul_tb_id,
+ ul_proto, ul_sip,
+ type);
+ if (!fib_entry)
+ goto out;
+
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static bool mlxsw_sp_router_nve_is_decap(struct mlxsw_sp *mlxsw_sp,
+ u32 ul_tb_id,
+ enum mlxsw_sp_l3proto ul_proto,
+ const union mlxsw_sp_l3addr *ul_sip)
+{
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+
+ return router->nve_decap_config.valid &&
+ router->nve_decap_config.ul_tb_id == ul_tb_id &&
+ router->nve_decap_config.ul_proto == ul_proto &&
+ !memcmp(&router->nve_decap_config.ul_sip, ul_sip,
+ sizeof(*ul_sip));
+}
+
+struct mlxsw_sp_neigh_key {
+ struct neighbour *n;
+};
+
+struct mlxsw_sp_neigh_entry {
+ struct list_head rif_list_node;
+ struct rhash_head ht_node;
+ struct mlxsw_sp_neigh_key key;
+ u16 rif;
+ bool connected;
+ unsigned char ha[ETH_ALEN];
+ struct list_head nexthop_list; /* list of nexthops using
+ * this neigh entry
+ */
+ struct list_head nexthop_neighs_list_node;
+ unsigned int counter_index;
+ bool counter_valid;
+};
+
+static const struct rhashtable_params mlxsw_sp_neigh_ht_params = {
+ .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key),
+ .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node),
+ .key_len = sizeof(struct mlxsw_sp_neigh_key),
+};
+
+struct mlxsw_sp_neigh_entry *
+mlxsw_sp_rif_neigh_next(struct mlxsw_sp_rif *rif,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ if (!neigh_entry) {
+ if (list_empty(&rif->neigh_list))
+ return NULL;
+ else
+ return list_first_entry(&rif->neigh_list,
+ typeof(*neigh_entry),
+ rif_list_node);
+ }
+ if (list_is_last(&neigh_entry->rif_list_node, &rif->neigh_list))
+ return NULL;
+ return list_next_entry(neigh_entry, rif_list_node);
+}
+
+int mlxsw_sp_neigh_entry_type(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ return neigh_entry->key.n->tbl->family;
+}
+
+unsigned char *
+mlxsw_sp_neigh_entry_ha(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ return neigh_entry->ha;
+}
+
+u32 mlxsw_sp_neigh4_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ struct neighbour *n;
+
+ n = neigh_entry->key.n;
+ return ntohl(*((__be32 *) n->primary_key));
+}
+
+struct in6_addr *
+mlxsw_sp_neigh6_entry_dip(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ struct neighbour *n;
+
+ n = neigh_entry->key.n;
+ return (struct in6_addr *) &n->primary_key;
+}
+
+int mlxsw_sp_neigh_counter_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ u64 *p_counter)
+{
+ if (!neigh_entry->counter_valid)
+ return -EINVAL;
+
+ return mlxsw_sp_flow_counter_get(mlxsw_sp, neigh_entry->counter_index,
+ p_counter, NULL);
+}
+
+static struct mlxsw_sp_neigh_entry *
+mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n,
+ u16 rif)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+
+ neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL);
+ if (!neigh_entry)
+ return NULL;
+
+ neigh_entry->key.n = n;
+ neigh_entry->rif = rif;
+ INIT_LIST_HEAD(&neigh_entry->nexthop_list);
+
+ return neigh_entry;
+}
+
+static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ kfree(neigh_entry);
+}
+
+static int
+mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ return rhashtable_insert_fast(&mlxsw_sp->router->neigh_ht,
+ &neigh_entry->ht_node,
+ mlxsw_sp_neigh_ht_params);
+}
+
+static void
+mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ rhashtable_remove_fast(&mlxsw_sp->router->neigh_ht,
+ &neigh_entry->ht_node,
+ mlxsw_sp_neigh_ht_params);
+}
+
+static bool
+mlxsw_sp_neigh_counter_should_alloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ struct devlink *devlink;
+ const char *table_name;
+
+ switch (mlxsw_sp_neigh_entry_type(neigh_entry)) {
+ case AF_INET:
+ table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST4;
+ break;
+ case AF_INET6:
+ table_name = MLXSW_SP_DPIPE_TABLE_NAME_HOST6;
+ break;
+ default:
+ WARN_ON(1);
+ return false;
+ }
+
+ devlink = priv_to_devlink(mlxsw_sp->core);
+ return devlink_dpipe_table_counter_enabled(devlink, table_name);
+}
+
+static void
+mlxsw_sp_neigh_counter_alloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ if (!mlxsw_sp_neigh_counter_should_alloc(mlxsw_sp, neigh_entry))
+ return;
+
+ if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &neigh_entry->counter_index))
+ return;
+
+ neigh_entry->counter_valid = true;
+}
+
+static void
+mlxsw_sp_neigh_counter_free(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ if (!neigh_entry->counter_valid)
+ return;
+ mlxsw_sp_flow_counter_free(mlxsw_sp,
+ neigh_entry->counter_index);
+ neigh_entry->counter_valid = false;
+}
+
+static struct mlxsw_sp_neigh_entry *
+mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+ struct mlxsw_sp_rif *rif;
+ int err;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev);
+ if (!rif)
+ return ERR_PTR(-EINVAL);
+
+ neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index);
+ if (!neigh_entry)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry);
+ if (err)
+ goto err_neigh_entry_insert;
+
+ mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry);
+ atomic_inc(&mlxsw_sp->router->neighs_update.neigh_count);
+ list_add(&neigh_entry->rif_list_node, &rif->neigh_list);
+
+ return neigh_entry;
+
+err_neigh_entry_insert:
+ mlxsw_sp_neigh_entry_free(neigh_entry);
+ return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ list_del(&neigh_entry->rif_list_node);
+ atomic_dec(&mlxsw_sp->router->neighs_update.neigh_count);
+ mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry);
+ mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry);
+ mlxsw_sp_neigh_entry_free(neigh_entry);
+}
+
+static struct mlxsw_sp_neigh_entry *
+mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n)
+{
+ struct mlxsw_sp_neigh_key key;
+
+ key.n = n;
+ return rhashtable_lookup_fast(&mlxsw_sp->router->neigh_ht,
+ &key, mlxsw_sp_neigh_ht_params);
+}
+
+static void
+mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp)
+{
+ unsigned long interval;
+
+#if IS_ENABLED(CONFIG_IPV6)
+ interval = min_t(unsigned long,
+ NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME),
+ NEIGH_VAR(&nd_tbl.parms, DELAY_PROBE_TIME));
+#else
+ interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME);
+#endif
+ mlxsw_sp->router->neighs_update.interval = jiffies_to_msecs(interval);
+}
+
+static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ int ent_index)
+{
+ u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
+ struct net_device *dev;
+ struct neighbour *n;
+ __be32 dipn;
+ u32 dip;
+ u16 rif;
+
+ mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip);
+
+ if (WARN_ON_ONCE(rif >= max_rifs))
+ return;
+ if (!mlxsw_sp->router->rifs[rif]) {
+ dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n");
+ return;
+ }
+
+ dipn = htonl(dip);
+ dev = mlxsw_sp->router->rifs[rif]->dev;
+ n = neigh_lookup(&arp_tbl, &dipn, dev);
+ if (!n)
+ return;
+
+ netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip);
+ neigh_event_send(n, NULL);
+ neigh_release(n);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ int rec_index)
+{
+ struct net_device *dev;
+ struct neighbour *n;
+ struct in6_addr dip;
+ u16 rif;
+
+ mlxsw_reg_rauhtd_ent_ipv6_unpack(rauhtd_pl, rec_index, &rif,
+ (char *) &dip);
+
+ if (!mlxsw_sp->router->rifs[rif]) {
+ dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n");
+ return;
+ }
+
+ dev = mlxsw_sp->router->rifs[rif]->dev;
+ n = neigh_lookup(&nd_tbl, &dip, dev);
+ if (!n)
+ return;
+
+ netdev_dbg(dev, "Updating neighbour with IP=%pI6c\n", &dip);
+ neigh_event_send(n, NULL);
+ neigh_release(n);
+}
+#else
+static void mlxsw_sp_router_neigh_ent_ipv6_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ int rec_index)
+{
+}
+#endif
+
+static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ int rec_index)
+{
+ u8 num_entries;
+ int i;
+
+ num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
+ rec_index);
+ /* Hardware starts counting at 0, so add 1. */
+ num_entries++;
+
+ /* Each record consists of several neighbour entries. */
+ for (i = 0; i < num_entries; i++) {
+ int ent_index;
+
+ ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i;
+ mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl,
+ ent_index);
+ }
+
+}
+
+static void mlxsw_sp_router_neigh_rec_ipv6_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ int rec_index)
+{
+ /* One record contains one entry. */
+ mlxsw_sp_router_neigh_ent_ipv6_process(mlxsw_sp, rauhtd_pl,
+ rec_index);
+}
+
+static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl, int rec_index)
+{
+ switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) {
+ case MLXSW_REG_RAUHTD_TYPE_IPV4:
+ mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl,
+ rec_index);
+ break;
+ case MLXSW_REG_RAUHTD_TYPE_IPV6:
+ mlxsw_sp_router_neigh_rec_ipv6_process(mlxsw_sp, rauhtd_pl,
+ rec_index);
+ break;
+ }
+}
+
+static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl)
+{
+ u8 num_rec, last_rec_index, num_entries;
+
+ num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl);
+ last_rec_index = num_rec - 1;
+
+ if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM)
+ return false;
+ if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) ==
+ MLXSW_REG_RAUHTD_TYPE_IPV6)
+ return true;
+
+ num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl,
+ last_rec_index);
+ if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC)
+ return true;
+ return false;
+}
+
+static int
+__mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp,
+ char *rauhtd_pl,
+ enum mlxsw_reg_rauhtd_type type)
+{
+ int i, num_rec;
+ int err;
+
+ /* Ensure the RIF we read from the device does not change mid-dump. */
+ mutex_lock(&mlxsw_sp->router->lock);
+ do {
+ mlxsw_reg_rauhtd_pack(rauhtd_pl, type);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd),
+ rauhtd_pl);
+ if (err) {
+ dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour table\n");
+ break;
+ }
+ num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl);
+ for (i = 0; i < num_rec; i++)
+ mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl,
+ i);
+ } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl));
+ mutex_unlock(&mlxsw_sp->router->lock);
+
+ return err;
+}
+
+static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp)
+{
+ enum mlxsw_reg_rauhtd_type type;
+ char *rauhtd_pl;
+ int err;
+
+ if (!atomic_read(&mlxsw_sp->router->neighs_update.neigh_count))
+ return 0;
+
+ rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL);
+ if (!rauhtd_pl)
+ return -ENOMEM;
+
+ type = MLXSW_REG_RAUHTD_TYPE_IPV4;
+ err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type);
+ if (err)
+ goto out;
+
+ type = MLXSW_REG_RAUHTD_TYPE_IPV6;
+ err = __mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp, rauhtd_pl, type);
+out:
+ kfree(rauhtd_pl);
+ return err;
+}
+
+static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ list_for_each_entry(neigh_entry, &mlxsw_sp->router->nexthop_neighs_list,
+ nexthop_neighs_list_node)
+ /* If this neigh have nexthops, make the kernel think this neigh
+ * is active regardless of the traffic.
+ */
+ neigh_event_send(neigh_entry->key.n, NULL);
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static void
+mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp)
+{
+ unsigned long interval = mlxsw_sp->router->neighs_update.interval;
+
+ mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw,
+ msecs_to_jiffies(interval));
+}
+
+static void mlxsw_sp_router_neighs_update_work(struct work_struct *work)
+{
+ struct mlxsw_sp_router *router;
+ int err;
+
+ router = container_of(work, struct mlxsw_sp_router,
+ neighs_update.dw.work);
+ err = mlxsw_sp_router_neighs_update_rauhtd(router->mlxsw_sp);
+ if (err)
+ dev_err(router->mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity");
+
+ mlxsw_sp_router_neighs_update_nh(router->mlxsw_sp);
+
+ mlxsw_sp_router_neighs_update_work_schedule(router->mlxsw_sp);
+}
+
+static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+ struct mlxsw_sp_router *router;
+
+ router = container_of(work, struct mlxsw_sp_router,
+ nexthop_probe_dw.work);
+ /* Iterate over nexthop neighbours, find those who are unresolved and
+ * send arp on them. This solves the chicken-egg problem when
+ * the nexthop wouldn't get offloaded until the neighbor is resolved
+ * but it wouldn't get resolved ever in case traffic is flowing in HW
+ * using different nexthop.
+ */
+ mutex_lock(&router->lock);
+ list_for_each_entry(neigh_entry, &router->nexthop_neighs_list,
+ nexthop_neighs_list_node)
+ if (!neigh_entry->connected)
+ neigh_event_send(neigh_entry->key.n, NULL);
+ mutex_unlock(&router->lock);
+
+ mlxsw_core_schedule_dw(&router->nexthop_probe_dw,
+ MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL);
+}
+
+static void
+mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ bool removing, bool dead);
+
+static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding)
+{
+ return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD :
+ MLXSW_REG_RAUHT_OP_WRITE_DELETE;
+}
+
+static int
+mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ enum mlxsw_reg_rauht_op op)
+{
+ struct neighbour *n = neigh_entry->key.n;
+ u32 dip = ntohl(*((__be32 *) n->primary_key));
+ char rauht_pl[MLXSW_REG_RAUHT_LEN];
+
+ mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha,
+ dip);
+ if (neigh_entry->counter_valid)
+ mlxsw_reg_rauht_pack_counter(rauht_pl,
+ neigh_entry->counter_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
+}
+
+static int
+mlxsw_sp_router_neigh_entry_op6(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ enum mlxsw_reg_rauht_op op)
+{
+ struct neighbour *n = neigh_entry->key.n;
+ char rauht_pl[MLXSW_REG_RAUHT_LEN];
+ const char *dip = n->primary_key;
+
+ mlxsw_reg_rauht_pack6(rauht_pl, op, neigh_entry->rif, neigh_entry->ha,
+ dip);
+ if (neigh_entry->counter_valid)
+ mlxsw_reg_rauht_pack_counter(rauht_pl,
+ neigh_entry->counter_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl);
+}
+
+bool mlxsw_sp_neigh_ipv6_ignore(struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ struct neighbour *n = neigh_entry->key.n;
+
+ /* Packets with a link-local destination address are trapped
+ * after LPM lookup and never reach the neighbour table, so
+ * there is no need to program such neighbours to the device.
+ */
+ if (ipv6_addr_type((struct in6_addr *) &n->primary_key) &
+ IPV6_ADDR_LINKLOCAL)
+ return true;
+ return false;
+}
+
+static void
+mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ bool adding)
+{
+ enum mlxsw_reg_rauht_op op = mlxsw_sp_rauht_op(adding);
+ int err;
+
+ if (!adding && !neigh_entry->connected)
+ return;
+ neigh_entry->connected = adding;
+ if (neigh_entry->key.n->tbl->family == AF_INET) {
+ err = mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry,
+ op);
+ if (err)
+ return;
+ } else if (neigh_entry->key.n->tbl->family == AF_INET6) {
+ if (mlxsw_sp_neigh_ipv6_ignore(neigh_entry))
+ return;
+ err = mlxsw_sp_router_neigh_entry_op6(mlxsw_sp, neigh_entry,
+ op);
+ if (err)
+ return;
+ } else {
+ WARN_ON_ONCE(1);
+ return;
+ }
+
+ if (adding)
+ neigh_entry->key.n->flags |= NTF_OFFLOADED;
+ else
+ neigh_entry->key.n->flags &= ~NTF_OFFLOADED;
+}
+
+void
+mlxsw_sp_neigh_entry_counter_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ bool adding)
+{
+ if (adding)
+ mlxsw_sp_neigh_counter_alloc(mlxsw_sp, neigh_entry);
+ else
+ mlxsw_sp_neigh_counter_free(mlxsw_sp, neigh_entry);
+ mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, true);
+}
+
+struct mlxsw_sp_netevent_work {
+ struct work_struct work;
+ struct mlxsw_sp *mlxsw_sp;
+ struct neighbour *n;
+};
+
+static void mlxsw_sp_router_neigh_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_netevent_work *net_work =
+ container_of(work, struct mlxsw_sp_netevent_work, work);
+ struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp;
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+ struct neighbour *n = net_work->n;
+ unsigned char ha[ETH_ALEN];
+ bool entry_connected;
+ u8 nud_state, dead;
+
+ /* If these parameters are changed after we release the lock,
+ * then we are guaranteed to receive another event letting us
+ * know about it.
+ */
+ read_lock_bh(&n->lock);
+ memcpy(ha, n->ha, ETH_ALEN);
+ nud_state = n->nud_state;
+ dead = n->dead;
+ read_unlock_bh(&n->lock);
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ mlxsw_sp_span_respin(mlxsw_sp);
+
+ entry_connected = nud_state & NUD_VALID && !dead;
+ neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
+ if (!entry_connected && !neigh_entry)
+ goto out;
+ if (!neigh_entry) {
+ neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
+ if (IS_ERR(neigh_entry))
+ goto out;
+ }
+
+ if (neigh_entry->connected && entry_connected &&
+ !memcmp(neigh_entry->ha, ha, ETH_ALEN))
+ goto out;
+
+ memcpy(neigh_entry->ha, ha, ETH_ALEN);
+ mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected);
+ mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected,
+ dead);
+
+ if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
+ mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
+
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ neigh_release(n);
+ kfree(net_work);
+}
+
+static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp);
+
+static void mlxsw_sp_router_mp_hash_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_netevent_work *net_work =
+ container_of(work, struct mlxsw_sp_netevent_work, work);
+ struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp;
+
+ mlxsw_sp_mp_hash_init(mlxsw_sp);
+ kfree(net_work);
+}
+
+static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp);
+
+static void mlxsw_sp_router_update_priority_work(struct work_struct *work)
+{
+ struct mlxsw_sp_netevent_work *net_work =
+ container_of(work, struct mlxsw_sp_netevent_work, work);
+ struct mlxsw_sp *mlxsw_sp = net_work->mlxsw_sp;
+
+ __mlxsw_sp_router_init(mlxsw_sp);
+ kfree(net_work);
+}
+
+static int mlxsw_sp_router_schedule_work(struct net *net,
+ struct notifier_block *nb,
+ void (*cb)(struct work_struct *))
+{
+ struct mlxsw_sp_netevent_work *net_work;
+ struct mlxsw_sp_router *router;
+
+ router = container_of(nb, struct mlxsw_sp_router, netevent_nb);
+ if (!net_eq(net, mlxsw_sp_net(router->mlxsw_sp)))
+ return NOTIFY_DONE;
+
+ net_work = kzalloc(sizeof(*net_work), GFP_ATOMIC);
+ if (!net_work)
+ return NOTIFY_BAD;
+
+ INIT_WORK(&net_work->work, cb);
+ net_work->mlxsw_sp = router->mlxsw_sp;
+ mlxsw_core_schedule_work(&net_work->work);
+ return NOTIFY_DONE;
+}
+
+static int mlxsw_sp_router_netevent_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct mlxsw_sp_netevent_work *net_work;
+ struct mlxsw_sp_port *mlxsw_sp_port;
+ struct mlxsw_sp *mlxsw_sp;
+ unsigned long interval;
+ struct neigh_parms *p;
+ struct neighbour *n;
+
+ switch (event) {
+ case NETEVENT_DELAY_PROBE_TIME_UPDATE:
+ p = ptr;
+
+ /* We don't care about changes in the default table. */
+ if (!p->dev || (p->tbl->family != AF_INET &&
+ p->tbl->family != AF_INET6))
+ return NOTIFY_DONE;
+
+ /* We are in atomic context and can't take RTNL mutex,
+ * so use RCU variant to walk the device chain.
+ */
+ mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev);
+ if (!mlxsw_sp_port)
+ return NOTIFY_DONE;
+
+ mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME));
+ mlxsw_sp->router->neighs_update.interval = interval;
+
+ mlxsw_sp_port_dev_put(mlxsw_sp_port);
+ break;
+ case NETEVENT_NEIGH_UPDATE:
+ n = ptr;
+
+ if (n->tbl->family != AF_INET && n->tbl->family != AF_INET6)
+ return NOTIFY_DONE;
+
+ mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev);
+ if (!mlxsw_sp_port)
+ return NOTIFY_DONE;
+
+ net_work = kzalloc(sizeof(*net_work), GFP_ATOMIC);
+ if (!net_work) {
+ mlxsw_sp_port_dev_put(mlxsw_sp_port);
+ return NOTIFY_BAD;
+ }
+
+ INIT_WORK(&net_work->work, mlxsw_sp_router_neigh_event_work);
+ net_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ net_work->n = n;
+
+ /* Take a reference to ensure the neighbour won't be
+ * destructed until we drop the reference in delayed
+ * work.
+ */
+ neigh_clone(n);
+ mlxsw_core_schedule_work(&net_work->work);
+ mlxsw_sp_port_dev_put(mlxsw_sp_port);
+ break;
+ case NETEVENT_IPV4_MPATH_HASH_UPDATE:
+ case NETEVENT_IPV6_MPATH_HASH_UPDATE:
+ return mlxsw_sp_router_schedule_work(ptr, nb,
+ mlxsw_sp_router_mp_hash_event_work);
+
+ case NETEVENT_IPV4_FWD_UPDATE_PRIORITY_UPDATE:
+ return mlxsw_sp_router_schedule_work(ptr, nb,
+ mlxsw_sp_router_update_priority_work);
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp)
+{
+ int err;
+
+ err = rhashtable_init(&mlxsw_sp->router->neigh_ht,
+ &mlxsw_sp_neigh_ht_params);
+ if (err)
+ return err;
+
+ /* Initialize the polling interval according to the default
+ * table.
+ */
+ mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp);
+
+ /* Create the delayed works for the activity_update */
+ INIT_DELAYED_WORK(&mlxsw_sp->router->neighs_update.dw,
+ mlxsw_sp_router_neighs_update_work);
+ INIT_DELAYED_WORK(&mlxsw_sp->router->nexthop_probe_dw,
+ mlxsw_sp_router_probe_unresolved_nexthops);
+ atomic_set(&mlxsw_sp->router->neighs_update.neigh_count, 0);
+ mlxsw_core_schedule_dw(&mlxsw_sp->router->neighs_update.dw, 0);
+ mlxsw_core_schedule_dw(&mlxsw_sp->router->nexthop_probe_dw, 0);
+ return 0;
+}
+
+static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ cancel_delayed_work_sync(&mlxsw_sp->router->neighs_update.dw);
+ cancel_delayed_work_sync(&mlxsw_sp->router->nexthop_probe_dw);
+ rhashtable_destroy(&mlxsw_sp->router->neigh_ht);
+}
+
+static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry, *tmp;
+
+ list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list,
+ rif_list_node) {
+ mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, false);
+ mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
+ }
+}
+
+enum mlxsw_sp_nexthop_type {
+ MLXSW_SP_NEXTHOP_TYPE_ETH,
+ MLXSW_SP_NEXTHOP_TYPE_IPIP,
+};
+
+enum mlxsw_sp_nexthop_action {
+ /* Nexthop forwards packets to an egress RIF */
+ MLXSW_SP_NEXTHOP_ACTION_FORWARD,
+ /* Nexthop discards packets */
+ MLXSW_SP_NEXTHOP_ACTION_DISCARD,
+ /* Nexthop traps packets */
+ MLXSW_SP_NEXTHOP_ACTION_TRAP,
+};
+
+struct mlxsw_sp_nexthop_key {
+ struct fib_nh *fib_nh;
+};
+
+struct mlxsw_sp_nexthop {
+ struct list_head neigh_list_node; /* member of neigh entry list */
+ struct list_head rif_list_node;
+ struct list_head router_list_node;
+ struct mlxsw_sp_nexthop_group_info *nhgi; /* pointer back to the group
+ * this nexthop belongs to
+ */
+ struct rhash_head ht_node;
+ struct neigh_table *neigh_tbl;
+ struct mlxsw_sp_nexthop_key key;
+ unsigned char gw_addr[sizeof(struct in6_addr)];
+ int ifindex;
+ int nh_weight;
+ int norm_nh_weight;
+ int num_adj_entries;
+ struct mlxsw_sp_rif *rif;
+ u8 should_offload:1, /* set indicates this nexthop should be written
+ * to the adjacency table.
+ */
+ offloaded:1, /* set indicates this nexthop was written to the
+ * adjacency table.
+ */
+ update:1; /* set indicates this nexthop should be updated in the
+ * adjacency table (f.e., its MAC changed).
+ */
+ enum mlxsw_sp_nexthop_action action;
+ enum mlxsw_sp_nexthop_type type;
+ union {
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ };
+ unsigned int counter_index;
+ bool counter_valid;
+};
+
+enum mlxsw_sp_nexthop_group_type {
+ MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4,
+ MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6,
+ MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ,
+};
+
+struct mlxsw_sp_nexthop_group_info {
+ struct mlxsw_sp_nexthop_group *nh_grp;
+ u32 adj_index;
+ u16 ecmp_size;
+ u16 count;
+ int sum_norm_weight;
+ u8 adj_index_valid:1,
+ gateway:1, /* routes using the group use a gateway */
+ is_resilient:1;
+ struct list_head list; /* member in nh_res_grp_list */
+ struct mlxsw_sp_nexthop nexthops[0];
+#define nh_rif nexthops[0].rif
+};
+
+struct mlxsw_sp_nexthop_group_vr_key {
+ u16 vr_id;
+ enum mlxsw_sp_l3proto proto;
+};
+
+struct mlxsw_sp_nexthop_group_vr_entry {
+ struct list_head list; /* member in vr_list */
+ struct rhash_head ht_node; /* member in vr_ht */
+ refcount_t ref_count;
+ struct mlxsw_sp_nexthop_group_vr_key key;
+};
+
+struct mlxsw_sp_nexthop_group {
+ struct rhash_head ht_node;
+ struct list_head fib_list; /* list of fib entries that use this group */
+ union {
+ struct {
+ struct fib_info *fi;
+ } ipv4;
+ struct {
+ u32 id;
+ } obj;
+ };
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct list_head vr_list;
+ struct rhashtable vr_ht;
+ enum mlxsw_sp_nexthop_group_type type;
+ bool can_destroy;
+};
+
+void mlxsw_sp_nexthop_counter_alloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ struct devlink *devlink;
+
+ devlink = priv_to_devlink(mlxsw_sp->core);
+ if (!devlink_dpipe_table_counter_enabled(devlink,
+ MLXSW_SP_DPIPE_TABLE_NAME_ADJ))
+ return;
+
+ if (mlxsw_sp_flow_counter_alloc(mlxsw_sp, &nh->counter_index))
+ return;
+
+ nh->counter_valid = true;
+}
+
+void mlxsw_sp_nexthop_counter_free(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ if (!nh->counter_valid)
+ return;
+ mlxsw_sp_flow_counter_free(mlxsw_sp, nh->counter_index);
+ nh->counter_valid = false;
+}
+
+int mlxsw_sp_nexthop_counter_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh, u64 *p_counter)
+{
+ if (!nh->counter_valid)
+ return -EINVAL;
+
+ return mlxsw_sp_flow_counter_get(mlxsw_sp, nh->counter_index,
+ p_counter, NULL);
+}
+
+struct mlxsw_sp_nexthop *mlxsw_sp_nexthop_next(struct mlxsw_sp_router *router,
+ struct mlxsw_sp_nexthop *nh)
+{
+ if (!nh) {
+ if (list_empty(&router->nexthop_list))
+ return NULL;
+ else
+ return list_first_entry(&router->nexthop_list,
+ typeof(*nh), router_list_node);
+ }
+ if (list_is_last(&nh->router_list_node, &router->nexthop_list))
+ return NULL;
+ return list_next_entry(nh, router_list_node);
+}
+
+bool mlxsw_sp_nexthop_is_forward(const struct mlxsw_sp_nexthop *nh)
+{
+ return nh->offloaded && nh->action == MLXSW_SP_NEXTHOP_ACTION_FORWARD;
+}
+
+unsigned char *mlxsw_sp_nexthop_ha(struct mlxsw_sp_nexthop *nh)
+{
+ if (nh->type != MLXSW_SP_NEXTHOP_TYPE_ETH ||
+ !mlxsw_sp_nexthop_is_forward(nh))
+ return NULL;
+ return nh->neigh_entry->ha;
+}
+
+int mlxsw_sp_nexthop_indexes(struct mlxsw_sp_nexthop *nh, u32 *p_adj_index,
+ u32 *p_adj_size, u32 *p_adj_hash_index)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh->nhgi;
+ u32 adj_hash_index = 0;
+ int i;
+
+ if (!nh->offloaded || !nhgi->adj_index_valid)
+ return -EINVAL;
+
+ *p_adj_index = nhgi->adj_index;
+ *p_adj_size = nhgi->ecmp_size;
+
+ for (i = 0; i < nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh_iter = &nhgi->nexthops[i];
+
+ if (nh_iter == nh)
+ break;
+ if (nh_iter->offloaded)
+ adj_hash_index += nh_iter->num_adj_entries;
+ }
+
+ *p_adj_hash_index = adj_hash_index;
+ return 0;
+}
+
+struct mlxsw_sp_rif *mlxsw_sp_nexthop_rif(struct mlxsw_sp_nexthop *nh)
+{
+ return nh->rif;
+}
+
+bool mlxsw_sp_nexthop_group_has_ipip(struct mlxsw_sp_nexthop *nh)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh->nhgi;
+ int i;
+
+ for (i = 0; i < nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh_iter = &nhgi->nexthops[i];
+
+ if (nh_iter->type == MLXSW_SP_NEXTHOP_TYPE_IPIP)
+ return true;
+ }
+ return false;
+}
+
+static const struct rhashtable_params mlxsw_sp_nexthop_group_vr_ht_params = {
+ .key_offset = offsetof(struct mlxsw_sp_nexthop_group_vr_entry, key),
+ .head_offset = offsetof(struct mlxsw_sp_nexthop_group_vr_entry, ht_node),
+ .key_len = sizeof(struct mlxsw_sp_nexthop_group_vr_key),
+ .automatic_shrinking = true,
+};
+
+static struct mlxsw_sp_nexthop_group_vr_entry *
+mlxsw_sp_nexthop_group_vr_entry_lookup(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_fib *fib)
+{
+ struct mlxsw_sp_nexthop_group_vr_key key;
+
+ memset(&key, 0, sizeof(key));
+ key.vr_id = fib->vr->id;
+ key.proto = fib->proto;
+ return rhashtable_lookup_fast(&nh_grp->vr_ht, &key,
+ mlxsw_sp_nexthop_group_vr_ht_params);
+}
+
+static int
+mlxsw_sp_nexthop_group_vr_entry_create(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_fib *fib)
+{
+ struct mlxsw_sp_nexthop_group_vr_entry *vr_entry;
+ int err;
+
+ vr_entry = kzalloc(sizeof(*vr_entry), GFP_KERNEL);
+ if (!vr_entry)
+ return -ENOMEM;
+
+ vr_entry->key.vr_id = fib->vr->id;
+ vr_entry->key.proto = fib->proto;
+ refcount_set(&vr_entry->ref_count, 1);
+
+ err = rhashtable_insert_fast(&nh_grp->vr_ht, &vr_entry->ht_node,
+ mlxsw_sp_nexthop_group_vr_ht_params);
+ if (err)
+ goto err_hashtable_insert;
+
+ list_add(&vr_entry->list, &nh_grp->vr_list);
+
+ return 0;
+
+err_hashtable_insert:
+ kfree(vr_entry);
+ return err;
+}
+
+static void
+mlxsw_sp_nexthop_group_vr_entry_destroy(struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_nexthop_group_vr_entry *vr_entry)
+{
+ list_del(&vr_entry->list);
+ rhashtable_remove_fast(&nh_grp->vr_ht, &vr_entry->ht_node,
+ mlxsw_sp_nexthop_group_vr_ht_params);
+ kfree(vr_entry);
+}
+
+static int
+mlxsw_sp_nexthop_group_vr_link(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_fib *fib)
+{
+ struct mlxsw_sp_nexthop_group_vr_entry *vr_entry;
+
+ vr_entry = mlxsw_sp_nexthop_group_vr_entry_lookup(nh_grp, fib);
+ if (vr_entry) {
+ refcount_inc(&vr_entry->ref_count);
+ return 0;
+ }
+
+ return mlxsw_sp_nexthop_group_vr_entry_create(nh_grp, fib);
+}
+
+static void
+mlxsw_sp_nexthop_group_vr_unlink(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_fib *fib)
+{
+ struct mlxsw_sp_nexthop_group_vr_entry *vr_entry;
+
+ vr_entry = mlxsw_sp_nexthop_group_vr_entry_lookup(nh_grp, fib);
+ if (WARN_ON_ONCE(!vr_entry))
+ return;
+
+ if (!refcount_dec_and_test(&vr_entry->ref_count))
+ return;
+
+ mlxsw_sp_nexthop_group_vr_entry_destroy(nh_grp, vr_entry);
+}
+
+struct mlxsw_sp_nexthop_group_cmp_arg {
+ enum mlxsw_sp_nexthop_group_type type;
+ union {
+ struct fib_info *fi;
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ u32 id;
+ };
+};
+
+static bool
+mlxsw_sp_nexthop6_group_has_nexthop(const struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct in6_addr *gw, int ifindex,
+ int weight)
+{
+ int i;
+
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ const struct mlxsw_sp_nexthop *nh;
+
+ nh = &nh_grp->nhgi->nexthops[i];
+ if (nh->ifindex == ifindex && nh->nh_weight == weight &&
+ ipv6_addr_equal(gw, (struct in6_addr *) nh->gw_addr))
+ return true;
+ }
+
+ return false;
+}
+
+static bool
+mlxsw_sp_nexthop6_group_cmp(const struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ if (nh_grp->nhgi->count != fib6_entry->nrt6)
+ return false;
+
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
+ struct in6_addr *gw;
+ int ifindex, weight;
+
+ ifindex = fib6_nh->fib_nh_dev->ifindex;
+ weight = fib6_nh->fib_nh_weight;
+ gw = &fib6_nh->fib_nh_gw6;
+ if (!mlxsw_sp_nexthop6_group_has_nexthop(nh_grp, gw, ifindex,
+ weight))
+ return false;
+ }
+
+ return true;
+}
+
+static int
+mlxsw_sp_nexthop_group_cmp(struct rhashtable_compare_arg *arg, const void *ptr)
+{
+ const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = arg->key;
+ const struct mlxsw_sp_nexthop_group *nh_grp = ptr;
+
+ if (nh_grp->type != cmp_arg->type)
+ return 1;
+
+ switch (cmp_arg->type) {
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4:
+ return cmp_arg->fi != nh_grp->ipv4.fi;
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6:
+ return !mlxsw_sp_nexthop6_group_cmp(nh_grp,
+ cmp_arg->fib6_entry);
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ:
+ return cmp_arg->id != nh_grp->obj.id;
+ default:
+ WARN_ON(1);
+ return 1;
+ }
+}
+
+static u32 mlxsw_sp_nexthop_group_hash_obj(const void *data, u32 len, u32 seed)
+{
+ const struct mlxsw_sp_nexthop_group *nh_grp = data;
+ const struct mlxsw_sp_nexthop *nh;
+ struct fib_info *fi;
+ unsigned int val;
+ int i;
+
+ switch (nh_grp->type) {
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4:
+ fi = nh_grp->ipv4.fi;
+ return jhash(&fi, sizeof(fi), seed);
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6:
+ val = nh_grp->nhgi->count;
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ nh = &nh_grp->nhgi->nexthops[i];
+ val ^= jhash(&nh->ifindex, sizeof(nh->ifindex), seed);
+ val ^= jhash(&nh->gw_addr, sizeof(nh->gw_addr), seed);
+ }
+ return jhash(&val, sizeof(val), seed);
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ:
+ return jhash(&nh_grp->obj.id, sizeof(nh_grp->obj.id), seed);
+ default:
+ WARN_ON(1);
+ return 0;
+ }
+}
+
+static u32
+mlxsw_sp_nexthop6_group_hash(struct mlxsw_sp_fib6_entry *fib6_entry, u32 seed)
+{
+ unsigned int val = fib6_entry->nrt6;
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
+ struct net_device *dev = fib6_nh->fib_nh_dev;
+ struct in6_addr *gw = &fib6_nh->fib_nh_gw6;
+
+ val ^= jhash(&dev->ifindex, sizeof(dev->ifindex), seed);
+ val ^= jhash(gw, sizeof(*gw), seed);
+ }
+
+ return jhash(&val, sizeof(val), seed);
+}
+
+static u32
+mlxsw_sp_nexthop_group_hash(const void *data, u32 len, u32 seed)
+{
+ const struct mlxsw_sp_nexthop_group_cmp_arg *cmp_arg = data;
+
+ switch (cmp_arg->type) {
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4:
+ return jhash(&cmp_arg->fi, sizeof(cmp_arg->fi), seed);
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6:
+ return mlxsw_sp_nexthop6_group_hash(cmp_arg->fib6_entry, seed);
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ:
+ return jhash(&cmp_arg->id, sizeof(cmp_arg->id), seed);
+ default:
+ WARN_ON(1);
+ return 0;
+ }
+}
+
+static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = {
+ .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node),
+ .hashfn = mlxsw_sp_nexthop_group_hash,
+ .obj_hashfn = mlxsw_sp_nexthop_group_hash_obj,
+ .obj_cmpfn = mlxsw_sp_nexthop_group_cmp,
+};
+
+static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6 &&
+ !nh_grp->nhgi->gateway)
+ return 0;
+
+ return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_group_ht,
+ &nh_grp->ht_node,
+ mlxsw_sp_nexthop_group_ht_params);
+}
+
+static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6 &&
+ !nh_grp->nhgi->gateway)
+ return;
+
+ rhashtable_remove_fast(&mlxsw_sp->router->nexthop_group_ht,
+ &nh_grp->ht_node,
+ mlxsw_sp_nexthop_group_ht_params);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop4_group_lookup(struct mlxsw_sp *mlxsw_sp,
+ struct fib_info *fi)
+{
+ struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg;
+
+ cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4;
+ cmp_arg.fi = fi;
+ return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht,
+ &cmp_arg,
+ mlxsw_sp_nexthop_group_ht_params);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop6_group_lookup(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg;
+
+ cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6;
+ cmp_arg.fib6_entry = fib6_entry;
+ return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht,
+ &cmp_arg,
+ mlxsw_sp_nexthop_group_ht_params);
+}
+
+static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = {
+ .key_offset = offsetof(struct mlxsw_sp_nexthop, key),
+ .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node),
+ .key_len = sizeof(struct mlxsw_sp_nexthop_key),
+};
+
+static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ return rhashtable_insert_fast(&mlxsw_sp->router->nexthop_ht,
+ &nh->ht_node, mlxsw_sp_nexthop_ht_params);
+}
+
+static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ rhashtable_remove_fast(&mlxsw_sp->router->nexthop_ht, &nh->ht_node,
+ mlxsw_sp_nexthop_ht_params);
+}
+
+static struct mlxsw_sp_nexthop *
+mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_key key)
+{
+ return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_ht, &key,
+ mlxsw_sp_nexthop_ht_params);
+}
+
+static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp,
+ enum mlxsw_sp_l3proto proto,
+ u16 vr_id,
+ u32 adj_index, u16 ecmp_size,
+ u32 new_adj_index,
+ u16 new_ecmp_size)
+{
+ char raleu_pl[MLXSW_REG_RALEU_LEN];
+
+ mlxsw_reg_raleu_pack(raleu_pl,
+ (enum mlxsw_reg_ralxx_protocol) proto, vr_id,
+ adj_index, ecmp_size, new_adj_index,
+ new_ecmp_size);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl);
+}
+
+static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ u32 old_adj_index, u16 old_ecmp_size)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
+ struct mlxsw_sp_nexthop_group_vr_entry *vr_entry;
+ int err;
+
+ list_for_each_entry(vr_entry, &nh_grp->vr_list, list) {
+ err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp,
+ vr_entry->key.proto,
+ vr_entry->key.vr_id,
+ old_adj_index,
+ old_ecmp_size,
+ nhgi->adj_index,
+ nhgi->ecmp_size);
+ if (err)
+ goto err_mass_update_vr;
+ }
+ return 0;
+
+err_mass_update_vr:
+ list_for_each_entry_continue_reverse(vr_entry, &nh_grp->vr_list, list)
+ mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, vr_entry->key.proto,
+ vr_entry->key.vr_id,
+ nhgi->adj_index,
+ nhgi->ecmp_size,
+ old_adj_index, old_ecmp_size);
+ return err;
+}
+
+static int __mlxsw_sp_nexthop_eth_update(struct mlxsw_sp *mlxsw_sp,
+ u32 adj_index,
+ struct mlxsw_sp_nexthop *nh,
+ bool force, char *ratr_pl)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
+ enum mlxsw_reg_ratr_op op;
+ u16 rif_index;
+
+ rif_index = nh->rif ? nh->rif->rif_index :
+ mlxsw_sp->router->lb_rif_index;
+ op = force ? MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY :
+ MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY_ON_ACTIVITY;
+ mlxsw_reg_ratr_pack(ratr_pl, op, true, MLXSW_REG_RATR_TYPE_ETHERNET,
+ adj_index, rif_index);
+ switch (nh->action) {
+ case MLXSW_SP_NEXTHOP_ACTION_FORWARD:
+ mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha);
+ break;
+ case MLXSW_SP_NEXTHOP_ACTION_DISCARD:
+ mlxsw_reg_ratr_trap_action_set(ratr_pl,
+ MLXSW_REG_RATR_TRAP_ACTION_DISCARD_ERRORS);
+ break;
+ case MLXSW_SP_NEXTHOP_ACTION_TRAP:
+ mlxsw_reg_ratr_trap_action_set(ratr_pl,
+ MLXSW_REG_RATR_TRAP_ACTION_TRAP);
+ mlxsw_reg_ratr_trap_id_set(ratr_pl, MLXSW_TRAP_ID_RTR_EGRESS0);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return -EINVAL;
+ }
+ if (nh->counter_valid)
+ mlxsw_reg_ratr_counter_pack(ratr_pl, nh->counter_index, true);
+ else
+ mlxsw_reg_ratr_counter_pack(ratr_pl, 0, false);
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
+}
+
+int mlxsw_sp_nexthop_eth_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
+ struct mlxsw_sp_nexthop *nh, bool force,
+ char *ratr_pl)
+{
+ int i;
+
+ for (i = 0; i < nh->num_adj_entries; i++) {
+ int err;
+
+ err = __mlxsw_sp_nexthop_eth_update(mlxsw_sp, adj_index + i,
+ nh, force, ratr_pl);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int __mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp,
+ u32 adj_index,
+ struct mlxsw_sp_nexthop *nh,
+ bool force, char *ratr_pl)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[nh->ipip_entry->ipipt];
+ return ipip_ops->nexthop_update(mlxsw_sp, adj_index, nh->ipip_entry,
+ force, ratr_pl);
+}
+
+static int mlxsw_sp_nexthop_ipip_update(struct mlxsw_sp *mlxsw_sp,
+ u32 adj_index,
+ struct mlxsw_sp_nexthop *nh, bool force,
+ char *ratr_pl)
+{
+ int i;
+
+ for (i = 0; i < nh->num_adj_entries; i++) {
+ int err;
+
+ err = __mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index + i,
+ nh, force, ratr_pl);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_nexthop_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index,
+ struct mlxsw_sp_nexthop *nh, bool force,
+ char *ratr_pl)
+{
+ /* When action is discard or trap, the nexthop must be
+ * programmed as an Ethernet nexthop.
+ */
+ if (nh->type == MLXSW_SP_NEXTHOP_TYPE_ETH ||
+ nh->action == MLXSW_SP_NEXTHOP_ACTION_DISCARD ||
+ nh->action == MLXSW_SP_NEXTHOP_ACTION_TRAP)
+ return mlxsw_sp_nexthop_eth_update(mlxsw_sp, adj_index, nh,
+ force, ratr_pl);
+ else
+ return mlxsw_sp_nexthop_ipip_update(mlxsw_sp, adj_index, nh,
+ force, ratr_pl);
+}
+
+static int
+mlxsw_sp_nexthop_group_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group_info *nhgi,
+ bool reallocate)
+{
+ char ratr_pl[MLXSW_REG_RATR_LEN];
+ u32 adj_index = nhgi->adj_index; /* base */
+ struct mlxsw_sp_nexthop *nh;
+ int i;
+
+ for (i = 0; i < nhgi->count; i++) {
+ nh = &nhgi->nexthops[i];
+
+ if (!nh->should_offload) {
+ nh->offloaded = 0;
+ continue;
+ }
+
+ if (nh->update || reallocate) {
+ int err = 0;
+
+ err = mlxsw_sp_nexthop_update(mlxsw_sp, adj_index, nh,
+ true, ratr_pl);
+ if (err)
+ return err;
+ nh->update = 0;
+ nh->offloaded = 1;
+ }
+ adj_index += nh->num_adj_entries;
+ }
+ return 0;
+}
+
+static int
+mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_fib_entry *fib_entry;
+ int err;
+
+ list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) {
+ err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+struct mlxsw_sp_adj_grp_size_range {
+ u16 start; /* Inclusive */
+ u16 end; /* Inclusive */
+};
+
+/* Ordered by range start value */
+static const struct mlxsw_sp_adj_grp_size_range
+mlxsw_sp1_adj_grp_size_ranges[] = {
+ { .start = 1, .end = 64 },
+ { .start = 512, .end = 512 },
+ { .start = 1024, .end = 1024 },
+ { .start = 2048, .end = 2048 },
+ { .start = 4096, .end = 4096 },
+};
+
+/* Ordered by range start value */
+static const struct mlxsw_sp_adj_grp_size_range
+mlxsw_sp2_adj_grp_size_ranges[] = {
+ { .start = 1, .end = 128 },
+ { .start = 256, .end = 256 },
+ { .start = 512, .end = 512 },
+ { .start = 1024, .end = 1024 },
+ { .start = 2048, .end = 2048 },
+ { .start = 4096, .end = 4096 },
+};
+
+static void mlxsw_sp_adj_grp_size_round_up(const struct mlxsw_sp *mlxsw_sp,
+ u16 *p_adj_grp_size)
+{
+ int i;
+
+ for (i = 0; i < mlxsw_sp->router->adj_grp_size_ranges_count; i++) {
+ const struct mlxsw_sp_adj_grp_size_range *size_range;
+
+ size_range = &mlxsw_sp->router->adj_grp_size_ranges[i];
+
+ if (*p_adj_grp_size >= size_range->start &&
+ *p_adj_grp_size <= size_range->end)
+ return;
+
+ if (*p_adj_grp_size <= size_range->end) {
+ *p_adj_grp_size = size_range->end;
+ return;
+ }
+ }
+}
+
+static void mlxsw_sp_adj_grp_size_round_down(const struct mlxsw_sp *mlxsw_sp,
+ u16 *p_adj_grp_size,
+ unsigned int alloc_size)
+{
+ int i;
+
+ for (i = mlxsw_sp->router->adj_grp_size_ranges_count - 1; i >= 0; i--) {
+ const struct mlxsw_sp_adj_grp_size_range *size_range;
+
+ size_range = &mlxsw_sp->router->adj_grp_size_ranges[i];
+
+ if (alloc_size >= size_range->end) {
+ *p_adj_grp_size = size_range->end;
+ return;
+ }
+ }
+}
+
+static int mlxsw_sp_fix_adj_grp_size(struct mlxsw_sp *mlxsw_sp,
+ u16 *p_adj_grp_size)
+{
+ unsigned int alloc_size;
+ int err;
+
+ /* Round up the requested group size to the next size supported
+ * by the device and make sure the request can be satisfied.
+ */
+ mlxsw_sp_adj_grp_size_round_up(mlxsw_sp, p_adj_grp_size);
+ err = mlxsw_sp_kvdl_alloc_count_query(mlxsw_sp,
+ MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ *p_adj_grp_size, &alloc_size);
+ if (err)
+ return err;
+ /* It is possible the allocation results in more allocated
+ * entries than requested. Try to use as much of them as
+ * possible.
+ */
+ mlxsw_sp_adj_grp_size_round_down(mlxsw_sp, p_adj_grp_size, alloc_size);
+
+ return 0;
+}
+
+static void
+mlxsw_sp_nexthop_group_normalize(struct mlxsw_sp_nexthop_group_info *nhgi)
+{
+ int i, g = 0, sum_norm_weight = 0;
+ struct mlxsw_sp_nexthop *nh;
+
+ for (i = 0; i < nhgi->count; i++) {
+ nh = &nhgi->nexthops[i];
+
+ if (!nh->should_offload)
+ continue;
+ if (g > 0)
+ g = gcd(nh->nh_weight, g);
+ else
+ g = nh->nh_weight;
+ }
+
+ for (i = 0; i < nhgi->count; i++) {
+ nh = &nhgi->nexthops[i];
+
+ if (!nh->should_offload)
+ continue;
+ nh->norm_nh_weight = nh->nh_weight / g;
+ sum_norm_weight += nh->norm_nh_weight;
+ }
+
+ nhgi->sum_norm_weight = sum_norm_weight;
+}
+
+static void
+mlxsw_sp_nexthop_group_rebalance(struct mlxsw_sp_nexthop_group_info *nhgi)
+{
+ int i, weight = 0, lower_bound = 0;
+ int total = nhgi->sum_norm_weight;
+ u16 ecmp_size = nhgi->ecmp_size;
+
+ for (i = 0; i < nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i];
+ int upper_bound;
+
+ if (!nh->should_offload)
+ continue;
+ weight += nh->norm_nh_weight;
+ upper_bound = DIV_ROUND_CLOSEST(ecmp_size * weight, total);
+ nh->num_adj_entries = upper_bound - lower_bound;
+ lower_bound = upper_bound;
+ }
+}
+
+static struct mlxsw_sp_nexthop *
+mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_rt6 *mlxsw_sp_rt6);
+
+static void
+mlxsw_sp_nexthop4_group_offload_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ int i;
+
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i];
+
+ if (nh->offloaded)
+ nh->key.fib_nh->fib_nh_flags |= RTNH_F_OFFLOAD;
+ else
+ nh->key.fib_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
+ }
+}
+
+static void
+__mlxsw_sp_nexthop6_group_offload_refresh(struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
+ struct mlxsw_sp_nexthop *nh;
+
+ nh = mlxsw_sp_rt6_nexthop(nh_grp, mlxsw_sp_rt6);
+ if (nh && nh->offloaded)
+ fib6_nh->fib_nh_flags |= RTNH_F_OFFLOAD;
+ else
+ fib6_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
+ }
+}
+
+static void
+mlxsw_sp_nexthop6_group_offload_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+
+ /* Unfortunately, in IPv6 the route and the nexthop are described by
+ * the same struct, so we need to iterate over all the routes using the
+ * nexthop group and set / clear the offload indication for them.
+ */
+ list_for_each_entry(fib6_entry, &nh_grp->fib_list,
+ common.nexthop_group_node)
+ __mlxsw_sp_nexthop6_group_offload_refresh(nh_grp, fib6_entry);
+}
+
+static void
+mlxsw_sp_nexthop_bucket_offload_refresh(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_nexthop *nh,
+ u16 bucket_index)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp = nh->nhgi->nh_grp;
+ bool offload = false, trap = false;
+
+ if (nh->offloaded) {
+ if (nh->action == MLXSW_SP_NEXTHOP_ACTION_TRAP)
+ trap = true;
+ else
+ offload = true;
+ }
+ nexthop_bucket_set_hw_flags(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id,
+ bucket_index, offload, trap);
+}
+
+static void
+mlxsw_sp_nexthop_obj_group_offload_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ int i;
+
+ /* Do not update the flags if the nexthop group is being destroyed
+ * since:
+ * 1. The nexthop objects is being deleted, in which case the flags are
+ * irrelevant.
+ * 2. The nexthop group was replaced by a newer group, in which case
+ * the flags of the nexthop object were already updated based on the
+ * new group.
+ */
+ if (nh_grp->can_destroy)
+ return;
+
+ nexthop_set_hw_flags(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id,
+ nh_grp->nhgi->adj_index_valid, false);
+
+ /* Update flags of individual nexthop buckets in case of a resilient
+ * nexthop group.
+ */
+ if (!nh_grp->nhgi->is_resilient)
+ return;
+
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i];
+
+ mlxsw_sp_nexthop_bucket_offload_refresh(mlxsw_sp, nh, i);
+ }
+}
+
+static void
+mlxsw_sp_nexthop_group_offload_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ switch (nh_grp->type) {
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4:
+ mlxsw_sp_nexthop4_group_offload_refresh(mlxsw_sp, nh_grp);
+ break;
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6:
+ mlxsw_sp_nexthop6_group_offload_refresh(mlxsw_sp, nh_grp);
+ break;
+ case MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ:
+ mlxsw_sp_nexthop_obj_group_offload_refresh(mlxsw_sp, nh_grp);
+ break;
+ }
+}
+
+static int
+mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
+ u16 ecmp_size, old_ecmp_size;
+ struct mlxsw_sp_nexthop *nh;
+ bool offload_change = false;
+ u32 adj_index;
+ bool old_adj_index_valid;
+ u32 old_adj_index;
+ int i, err2, err;
+
+ if (!nhgi->gateway)
+ return mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
+
+ for (i = 0; i < nhgi->count; i++) {
+ nh = &nhgi->nexthops[i];
+
+ if (nh->should_offload != nh->offloaded) {
+ offload_change = true;
+ if (nh->should_offload)
+ nh->update = 1;
+ }
+ }
+ if (!offload_change) {
+ /* Nothing was added or removed, so no need to reallocate. Just
+ * update MAC on existing adjacency indexes.
+ */
+ err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nhgi, false);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
+ goto set_trap;
+ }
+ /* Flags of individual nexthop buckets might need to be
+ * updated.
+ */
+ mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp);
+ return 0;
+ }
+ mlxsw_sp_nexthop_group_normalize(nhgi);
+ if (!nhgi->sum_norm_weight) {
+ /* No neigh of this group is connected so we just set
+ * the trap and let everthing flow through kernel.
+ */
+ err = 0;
+ goto set_trap;
+ }
+
+ ecmp_size = nhgi->sum_norm_weight;
+ err = mlxsw_sp_fix_adj_grp_size(mlxsw_sp, &ecmp_size);
+ if (err)
+ /* No valid allocation size available. */
+ goto set_trap;
+
+ err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ ecmp_size, &adj_index);
+ if (err) {
+ /* We ran out of KVD linear space, just set the
+ * trap and let everything flow through kernel.
+ */
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n");
+ goto set_trap;
+ }
+ old_adj_index_valid = nhgi->adj_index_valid;
+ old_adj_index = nhgi->adj_index;
+ old_ecmp_size = nhgi->ecmp_size;
+ nhgi->adj_index_valid = 1;
+ nhgi->adj_index = adj_index;
+ nhgi->ecmp_size = ecmp_size;
+ mlxsw_sp_nexthop_group_rebalance(nhgi);
+ err = mlxsw_sp_nexthop_group_update(mlxsw_sp, nhgi, true);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n");
+ goto set_trap;
+ }
+
+ mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp);
+
+ if (!old_adj_index_valid) {
+ /* The trap was set for fib entries, so we have to call
+ * fib entry update to unset it and use adjacency index.
+ */
+ err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n");
+ goto set_trap;
+ }
+ return 0;
+ }
+
+ err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp,
+ old_adj_index, old_ecmp_size);
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ old_ecmp_size, old_adj_index);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n");
+ goto set_trap;
+ }
+
+ return 0;
+
+set_trap:
+ old_adj_index_valid = nhgi->adj_index_valid;
+ nhgi->adj_index_valid = 0;
+ for (i = 0; i < nhgi->count; i++) {
+ nh = &nhgi->nexthops[i];
+ nh->offloaded = 0;
+ }
+ err2 = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp);
+ if (err2)
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n");
+ mlxsw_sp_nexthop_group_offload_refresh(mlxsw_sp, nh_grp);
+ if (old_adj_index_valid)
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ nhgi->ecmp_size, nhgi->adj_index);
+ return err;
+}
+
+static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh,
+ bool removing)
+{
+ if (!removing) {
+ nh->action = MLXSW_SP_NEXTHOP_ACTION_FORWARD;
+ nh->should_offload = 1;
+ } else if (nh->nhgi->is_resilient) {
+ nh->action = MLXSW_SP_NEXTHOP_ACTION_TRAP;
+ nh->should_offload = 1;
+ } else {
+ nh->should_offload = 0;
+ }
+ nh->update = 1;
+}
+
+static int
+mlxsw_sp_nexthop_dead_neigh_replace(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry)
+{
+ struct neighbour *n, *old_n = neigh_entry->key.n;
+ struct mlxsw_sp_nexthop *nh;
+ bool entry_connected;
+ u8 nud_state, dead;
+ int err;
+
+ nh = list_first_entry(&neigh_entry->nexthop_list,
+ struct mlxsw_sp_nexthop, neigh_list_node);
+
+ n = neigh_lookup(nh->neigh_tbl, &nh->gw_addr, nh->rif->dev);
+ if (!n) {
+ n = neigh_create(nh->neigh_tbl, &nh->gw_addr, nh->rif->dev);
+ if (IS_ERR(n))
+ return PTR_ERR(n);
+ neigh_event_send(n, NULL);
+ }
+
+ mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry);
+ neigh_entry->key.n = n;
+ err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry);
+ if (err)
+ goto err_neigh_entry_insert;
+
+ read_lock_bh(&n->lock);
+ nud_state = n->nud_state;
+ dead = n->dead;
+ read_unlock_bh(&n->lock);
+ entry_connected = nud_state & NUD_VALID && !dead;
+
+ list_for_each_entry(nh, &neigh_entry->nexthop_list,
+ neigh_list_node) {
+ neigh_release(old_n);
+ neigh_clone(n);
+ __mlxsw_sp_nexthop_neigh_update(nh, !entry_connected);
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp);
+ }
+
+ neigh_release(n);
+
+ return 0;
+
+err_neigh_entry_insert:
+ neigh_entry->key.n = old_n;
+ mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry);
+ neigh_release(n);
+ return err;
+}
+
+static void
+mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_neigh_entry *neigh_entry,
+ bool removing, bool dead)
+{
+ struct mlxsw_sp_nexthop *nh;
+
+ if (list_empty(&neigh_entry->nexthop_list))
+ return;
+
+ if (dead) {
+ int err;
+
+ err = mlxsw_sp_nexthop_dead_neigh_replace(mlxsw_sp,
+ neigh_entry);
+ if (err)
+ dev_err(mlxsw_sp->bus_info->dev, "Failed to replace dead neigh\n");
+ return;
+ }
+
+ list_for_each_entry(nh, &neigh_entry->nexthop_list,
+ neigh_list_node) {
+ __mlxsw_sp_nexthop_neigh_update(nh, removing);
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp);
+ }
+}
+
+static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh,
+ struct mlxsw_sp_rif *rif)
+{
+ if (nh->rif)
+ return;
+
+ nh->rif = rif;
+ list_add(&nh->rif_list_node, &rif->nexthop_list);
+}
+
+static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh)
+{
+ if (!nh->rif)
+ return;
+
+ list_del(&nh->rif_list_node);
+ nh->rif = NULL;
+}
+
+static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry;
+ struct neighbour *n;
+ u8 nud_state, dead;
+ int err;
+
+ if (!nh->nhgi->gateway || nh->neigh_entry)
+ return 0;
+
+ /* Take a reference of neigh here ensuring that neigh would
+ * not be destructed before the nexthop entry is finished.
+ * The reference is taken either in neigh_lookup() or
+ * in neigh_create() in case n is not found.
+ */
+ n = neigh_lookup(nh->neigh_tbl, &nh->gw_addr, nh->rif->dev);
+ if (!n) {
+ n = neigh_create(nh->neigh_tbl, &nh->gw_addr, nh->rif->dev);
+ if (IS_ERR(n))
+ return PTR_ERR(n);
+ neigh_event_send(n, NULL);
+ }
+ neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n);
+ if (!neigh_entry) {
+ neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n);
+ if (IS_ERR(neigh_entry)) {
+ err = -EINVAL;
+ goto err_neigh_entry_create;
+ }
+ }
+
+ /* If that is the first nexthop connected to that neigh, add to
+ * nexthop_neighs_list
+ */
+ if (list_empty(&neigh_entry->nexthop_list))
+ list_add_tail(&neigh_entry->nexthop_neighs_list_node,
+ &mlxsw_sp->router->nexthop_neighs_list);
+
+ nh->neigh_entry = neigh_entry;
+ list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list);
+ read_lock_bh(&n->lock);
+ nud_state = n->nud_state;
+ dead = n->dead;
+ read_unlock_bh(&n->lock);
+ __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead));
+
+ return 0;
+
+err_neigh_entry_create:
+ neigh_release(n);
+ return err;
+}
+
+static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry;
+ struct neighbour *n;
+
+ if (!neigh_entry)
+ return;
+ n = neigh_entry->key.n;
+
+ __mlxsw_sp_nexthop_neigh_update(nh, true);
+ list_del(&nh->neigh_list_node);
+ nh->neigh_entry = NULL;
+
+ /* If that is the last nexthop connected to that neigh, remove from
+ * nexthop_neighs_list
+ */
+ if (list_empty(&neigh_entry->nexthop_list))
+ list_del(&neigh_entry->nexthop_neighs_list_node);
+
+ if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list))
+ mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry);
+
+ neigh_release(n);
+}
+
+static bool mlxsw_sp_ipip_netdev_ul_up(struct net_device *ol_dev)
+{
+ struct net_device *ul_dev;
+ bool is_up;
+
+ rcu_read_lock();
+ ul_dev = mlxsw_sp_ipip_netdev_ul_dev_get(ol_dev);
+ is_up = ul_dev ? (ul_dev->flags & IFF_UP) : true;
+ rcu_read_unlock();
+
+ return is_up;
+}
+
+static void mlxsw_sp_nexthop_ipip_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh,
+ struct mlxsw_sp_ipip_entry *ipip_entry)
+{
+ bool removing;
+
+ if (!nh->nhgi->gateway || nh->ipip_entry)
+ return;
+
+ nh->ipip_entry = ipip_entry;
+ removing = !mlxsw_sp_ipip_netdev_ul_up(ipip_entry->ol_dev);
+ __mlxsw_sp_nexthop_neigh_update(nh, removing);
+ mlxsw_sp_nexthop_rif_init(nh, &ipip_entry->ol_lb->common);
+}
+
+static void mlxsw_sp_nexthop_ipip_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry = nh->ipip_entry;
+
+ if (!ipip_entry)
+ return;
+
+ __mlxsw_sp_nexthop_neigh_update(nh, true);
+ nh->ipip_entry = NULL;
+}
+
+static bool mlxsw_sp_nexthop4_ipip_type(const struct mlxsw_sp *mlxsw_sp,
+ const struct fib_nh *fib_nh,
+ enum mlxsw_sp_ipip_type *p_ipipt)
+{
+ struct net_device *dev = fib_nh->fib_nh_dev;
+
+ return dev &&
+ fib_nh->nh_parent->fib_type == RTN_UNICAST &&
+ mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, p_ipipt);
+}
+
+static int mlxsw_sp_nexthop_type_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh,
+ const struct net_device *dev)
+{
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+ struct mlxsw_sp_rif *rif;
+ int err;
+
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_ol_dev(mlxsw_sp, dev);
+ if (ipip_entry) {
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt];
+ if (ipip_ops->can_offload(mlxsw_sp, dev)) {
+ nh->type = MLXSW_SP_NEXTHOP_TYPE_IPIP;
+ mlxsw_sp_nexthop_ipip_init(mlxsw_sp, nh, ipip_entry);
+ return 0;
+ }
+ }
+
+ nh->type = MLXSW_SP_NEXTHOP_TYPE_ETH;
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!rif)
+ return 0;
+
+ mlxsw_sp_nexthop_rif_init(nh, rif);
+ err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh);
+ if (err)
+ goto err_neigh_init;
+
+ return 0;
+
+err_neigh_init:
+ mlxsw_sp_nexthop_rif_fini(nh);
+ return err;
+}
+
+static void mlxsw_sp_nexthop_type_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ switch (nh->type) {
+ case MLXSW_SP_NEXTHOP_TYPE_ETH:
+ mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh);
+ mlxsw_sp_nexthop_rif_fini(nh);
+ break;
+ case MLXSW_SP_NEXTHOP_TYPE_IPIP:
+ mlxsw_sp_nexthop_rif_fini(nh);
+ mlxsw_sp_nexthop_ipip_fini(mlxsw_sp, nh);
+ break;
+ }
+}
+
+static int mlxsw_sp_nexthop4_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_nexthop *nh,
+ struct fib_nh *fib_nh)
+{
+ struct net_device *dev = fib_nh->fib_nh_dev;
+ struct in_device *in_dev;
+ int err;
+
+ nh->nhgi = nh_grp->nhgi;
+ nh->key.fib_nh = fib_nh;
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+ nh->nh_weight = fib_nh->fib_nh_weight;
+#else
+ nh->nh_weight = 1;
+#endif
+ memcpy(&nh->gw_addr, &fib_nh->fib_nh_gw4, sizeof(fib_nh->fib_nh_gw4));
+ nh->neigh_tbl = &arp_tbl;
+ err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh);
+ if (err)
+ return err;
+
+ mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh);
+ list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list);
+
+ if (!dev)
+ return 0;
+ nh->ifindex = dev->ifindex;
+
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(dev);
+ if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) &&
+ fib_nh->fib_nh_flags & RTNH_F_LINKDOWN) {
+ rcu_read_unlock();
+ return 0;
+ }
+ rcu_read_unlock();
+
+ err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev);
+ if (err)
+ goto err_nexthop_neigh_init;
+
+ return 0;
+
+err_nexthop_neigh_init:
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+ mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
+ return err;
+}
+
+static void mlxsw_sp_nexthop4_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh);
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+ mlxsw_sp_nexthop_remove(mlxsw_sp, nh);
+}
+
+static void mlxsw_sp_nexthop4_event(struct mlxsw_sp *mlxsw_sp,
+ unsigned long event, struct fib_nh *fib_nh)
+{
+ struct mlxsw_sp_nexthop_key key;
+ struct mlxsw_sp_nexthop *nh;
+
+ key.fib_nh = fib_nh;
+ nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key);
+ if (!nh)
+ return;
+
+ switch (event) {
+ case FIB_EVENT_NH_ADD:
+ mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, fib_nh->fib_nh_dev);
+ break;
+ case FIB_EVENT_NH_DEL:
+ mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh);
+ break;
+ }
+
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp);
+}
+
+static void mlxsw_sp_nexthop_rif_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_nexthop *nh;
+ bool removing;
+
+ list_for_each_entry(nh, &rif->nexthop_list, rif_list_node) {
+ switch (nh->type) {
+ case MLXSW_SP_NEXTHOP_TYPE_ETH:
+ removing = false;
+ break;
+ case MLXSW_SP_NEXTHOP_TYPE_IPIP:
+ removing = !mlxsw_sp_ipip_netdev_ul_up(rif->dev);
+ break;
+ default:
+ WARN_ON(1);
+ continue;
+ }
+
+ __mlxsw_sp_nexthop_neigh_update(nh, removing);
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp);
+ }
+}
+
+static void mlxsw_sp_nexthop_rif_migrate(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *old_rif,
+ struct mlxsw_sp_rif *new_rif)
+{
+ struct mlxsw_sp_nexthop *nh;
+
+ list_splice_init(&old_rif->nexthop_list, &new_rif->nexthop_list);
+ list_for_each_entry(nh, &new_rif->nexthop_list, rif_list_node)
+ nh->rif = new_rif;
+ mlxsw_sp_nexthop_rif_update(mlxsw_sp, new_rif);
+}
+
+static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_nexthop *nh, *tmp;
+
+ list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) {
+ mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh);
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nhgi->nh_grp);
+ }
+}
+
+static int mlxsw_sp_adj_trap_entry_init(struct mlxsw_sp *mlxsw_sp)
+{
+ enum mlxsw_reg_ratr_trap_action trap_action;
+ char ratr_pl[MLXSW_REG_RATR_LEN];
+ int err;
+
+ err = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+ &mlxsw_sp->router->adj_trap_index);
+ if (err)
+ return err;
+
+ trap_action = MLXSW_REG_RATR_TRAP_ACTION_TRAP;
+ mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, true,
+ MLXSW_REG_RATR_TYPE_ETHERNET,
+ mlxsw_sp->router->adj_trap_index,
+ mlxsw_sp->router->lb_rif_index);
+ mlxsw_reg_ratr_trap_action_set(ratr_pl, trap_action);
+ mlxsw_reg_ratr_trap_id_set(ratr_pl, MLXSW_TRAP_ID_RTR_EGRESS0);
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
+ if (err)
+ goto err_ratr_write;
+
+ return 0;
+
+err_ratr_write:
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+ mlxsw_sp->router->adj_trap_index);
+ return err;
+}
+
+static void mlxsw_sp_adj_trap_entry_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ mlxsw_sp_kvdl_free(mlxsw_sp, MLXSW_SP_KVDL_ENTRY_TYPE_ADJ, 1,
+ mlxsw_sp->router->adj_trap_index);
+}
+
+static int mlxsw_sp_nexthop_group_inc(struct mlxsw_sp *mlxsw_sp)
+{
+ int err;
+
+ if (refcount_inc_not_zero(&mlxsw_sp->router->num_groups))
+ return 0;
+
+ err = mlxsw_sp_adj_trap_entry_init(mlxsw_sp);
+ if (err)
+ return err;
+
+ refcount_set(&mlxsw_sp->router->num_groups, 1);
+
+ return 0;
+}
+
+static void mlxsw_sp_nexthop_group_dec(struct mlxsw_sp *mlxsw_sp)
+{
+ if (!refcount_dec_and_test(&mlxsw_sp->router->num_groups))
+ return;
+
+ mlxsw_sp_adj_trap_entry_fini(mlxsw_sp);
+}
+
+static void
+mlxsw_sp_nh_grp_activity_get(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_nexthop_group *nh_grp,
+ unsigned long *activity)
+{
+ char *ratrad_pl;
+ int i, err;
+
+ ratrad_pl = kmalloc(MLXSW_REG_RATRAD_LEN, GFP_KERNEL);
+ if (!ratrad_pl)
+ return;
+
+ mlxsw_reg_ratrad_pack(ratrad_pl, nh_grp->nhgi->adj_index,
+ nh_grp->nhgi->count);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ratrad), ratrad_pl);
+ if (err)
+ goto out;
+
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ if (!mlxsw_reg_ratrad_activity_vector_get(ratrad_pl, i))
+ continue;
+ bitmap_set(activity, i, 1);
+ }
+
+out:
+ kfree(ratrad_pl);
+}
+
+#define MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL 1000 /* ms */
+
+static void
+mlxsw_sp_nh_grp_activity_update(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ unsigned long *activity;
+
+ activity = bitmap_zalloc(nh_grp->nhgi->count, GFP_KERNEL);
+ if (!activity)
+ return;
+
+ mlxsw_sp_nh_grp_activity_get(mlxsw_sp, nh_grp, activity);
+ nexthop_res_grp_activity_update(mlxsw_sp_net(mlxsw_sp), nh_grp->obj.id,
+ nh_grp->nhgi->count, activity);
+
+ bitmap_free(activity);
+}
+
+static void
+mlxsw_sp_nh_grp_activity_work_schedule(struct mlxsw_sp *mlxsw_sp)
+{
+ unsigned int interval = MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL;
+
+ mlxsw_core_schedule_dw(&mlxsw_sp->router->nh_grp_activity_dw,
+ msecs_to_jiffies(interval));
+}
+
+static void mlxsw_sp_nh_grp_activity_work(struct work_struct *work)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct mlxsw_sp_router *router;
+ bool reschedule = false;
+
+ router = container_of(work, struct mlxsw_sp_router,
+ nh_grp_activity_dw.work);
+
+ mutex_lock(&router->lock);
+
+ list_for_each_entry(nhgi, &router->nh_res_grp_list, list) {
+ mlxsw_sp_nh_grp_activity_update(router->mlxsw_sp, nhgi->nh_grp);
+ reschedule = true;
+ }
+
+ mutex_unlock(&router->lock);
+
+ if (!reschedule)
+ return;
+ mlxsw_sp_nh_grp_activity_work_schedule(router->mlxsw_sp);
+}
+
+static int
+mlxsw_sp_nexthop_obj_single_validate(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_single_info *nh,
+ struct netlink_ext_ack *extack)
+{
+ int err = -EINVAL;
+
+ if (nh->is_fdb)
+ NL_SET_ERR_MSG_MOD(extack, "FDB nexthops are not supported");
+ else if (nh->has_encap)
+ NL_SET_ERR_MSG_MOD(extack, "Encapsulating nexthops are not supported");
+ else
+ err = 0;
+
+ return err;
+}
+
+static int
+mlxsw_sp_nexthop_obj_group_entry_validate(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_single_info *nh,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+
+ err = mlxsw_sp_nexthop_obj_single_validate(mlxsw_sp, nh, extack);
+ if (err)
+ return err;
+
+ /* Device only nexthops with an IPIP device are programmed as
+ * encapsulating adjacency entries.
+ */
+ if (!nh->gw_family && !nh->is_reject &&
+ !mlxsw_sp_netdev_ipip_type(mlxsw_sp, nh->dev, NULL)) {
+ NL_SET_ERR_MSG_MOD(extack, "Nexthop group entry does not have a gateway");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+mlxsw_sp_nexthop_obj_group_validate(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_grp_info *nh_grp,
+ struct netlink_ext_ack *extack)
+{
+ int i;
+
+ if (nh_grp->is_fdb) {
+ NL_SET_ERR_MSG_MOD(extack, "FDB nexthop groups are not supported");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < nh_grp->num_nh; i++) {
+ const struct nh_notifier_single_info *nh;
+ int err;
+
+ nh = &nh_grp->nh_entries[i].nh;
+ err = mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh,
+ extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int
+mlxsw_sp_nexthop_obj_res_group_size_validate(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_res_table_info *nh_res_table,
+ struct netlink_ext_ack *extack)
+{
+ unsigned int alloc_size;
+ bool valid_size = false;
+ int err, i;
+
+ if (nh_res_table->num_nh_buckets < 32) {
+ NL_SET_ERR_MSG_MOD(extack, "Minimum number of buckets is 32");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < mlxsw_sp->router->adj_grp_size_ranges_count; i++) {
+ const struct mlxsw_sp_adj_grp_size_range *size_range;
+
+ size_range = &mlxsw_sp->router->adj_grp_size_ranges[i];
+
+ if (nh_res_table->num_nh_buckets >= size_range->start &&
+ nh_res_table->num_nh_buckets <= size_range->end) {
+ valid_size = true;
+ break;
+ }
+ }
+
+ if (!valid_size) {
+ NL_SET_ERR_MSG_MOD(extack, "Invalid number of buckets");
+ return -EINVAL;
+ }
+
+ err = mlxsw_sp_kvdl_alloc_count_query(mlxsw_sp,
+ MLXSW_SP_KVDL_ENTRY_TYPE_ADJ,
+ nh_res_table->num_nh_buckets,
+ &alloc_size);
+ if (err || nh_res_table->num_nh_buckets != alloc_size) {
+ NL_SET_ERR_MSG_MOD(extack, "Number of buckets does not fit allocation size of any KVDL partition");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int
+mlxsw_sp_nexthop_obj_res_group_validate(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_res_table_info *nh_res_table,
+ struct netlink_ext_ack *extack)
+{
+ int err;
+ u16 i;
+
+ err = mlxsw_sp_nexthop_obj_res_group_size_validate(mlxsw_sp,
+ nh_res_table,
+ extack);
+ if (err)
+ return err;
+
+ for (i = 0; i < nh_res_table->num_nh_buckets; i++) {
+ const struct nh_notifier_single_info *nh;
+ int err;
+
+ nh = &nh_res_table->nhs[i];
+ err = mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh,
+ extack);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_nexthop_obj_validate(struct mlxsw_sp *mlxsw_sp,
+ unsigned long event,
+ struct nh_notifier_info *info)
+{
+ struct nh_notifier_single_info *nh;
+
+ if (event != NEXTHOP_EVENT_REPLACE &&
+ event != NEXTHOP_EVENT_RES_TABLE_PRE_REPLACE &&
+ event != NEXTHOP_EVENT_BUCKET_REPLACE)
+ return 0;
+
+ switch (info->type) {
+ case NH_NOTIFIER_INFO_TYPE_SINGLE:
+ return mlxsw_sp_nexthop_obj_single_validate(mlxsw_sp, info->nh,
+ info->extack);
+ case NH_NOTIFIER_INFO_TYPE_GRP:
+ return mlxsw_sp_nexthop_obj_group_validate(mlxsw_sp,
+ info->nh_grp,
+ info->extack);
+ case NH_NOTIFIER_INFO_TYPE_RES_TABLE:
+ return mlxsw_sp_nexthop_obj_res_group_validate(mlxsw_sp,
+ info->nh_res_table,
+ info->extack);
+ case NH_NOTIFIER_INFO_TYPE_RES_BUCKET:
+ nh = &info->nh_res_bucket->new_nh;
+ return mlxsw_sp_nexthop_obj_group_entry_validate(mlxsw_sp, nh,
+ info->extack);
+ default:
+ NL_SET_ERR_MSG_MOD(info->extack, "Unsupported nexthop type");
+ return -EOPNOTSUPP;
+ }
+}
+
+static bool mlxsw_sp_nexthop_obj_is_gateway(struct mlxsw_sp *mlxsw_sp,
+ const struct nh_notifier_info *info)
+{
+ const struct net_device *dev;
+
+ switch (info->type) {
+ case NH_NOTIFIER_INFO_TYPE_SINGLE:
+ dev = info->nh->dev;
+ return info->nh->gw_family || info->nh->is_reject ||
+ mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL);
+ case NH_NOTIFIER_INFO_TYPE_GRP:
+ case NH_NOTIFIER_INFO_TYPE_RES_TABLE:
+ /* Already validated earlier. */
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void mlxsw_sp_nexthop_obj_blackhole_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ u16 lb_rif_index = mlxsw_sp->router->lb_rif_index;
+
+ nh->action = MLXSW_SP_NEXTHOP_ACTION_DISCARD;
+ nh->should_offload = 1;
+ /* While nexthops that discard packets do not forward packets
+ * via an egress RIF, they still need to be programmed using a
+ * valid RIF, so use the loopback RIF created during init.
+ */
+ nh->rif = mlxsw_sp->router->rifs[lb_rif_index];
+}
+
+static void mlxsw_sp_nexthop_obj_blackhole_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ nh->rif = NULL;
+ nh->should_offload = 0;
+}
+
+static int
+mlxsw_sp_nexthop_obj_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_nexthop *nh,
+ struct nh_notifier_single_info *nh_obj, int weight)
+{
+ struct net_device *dev = nh_obj->dev;
+ int err;
+
+ nh->nhgi = nh_grp->nhgi;
+ nh->nh_weight = weight;
+
+ switch (nh_obj->gw_family) {
+ case AF_INET:
+ memcpy(&nh->gw_addr, &nh_obj->ipv4, sizeof(nh_obj->ipv4));
+ nh->neigh_tbl = &arp_tbl;
+ break;
+ case AF_INET6:
+ memcpy(&nh->gw_addr, &nh_obj->ipv6, sizeof(nh_obj->ipv6));
+#if IS_ENABLED(CONFIG_IPV6)
+ nh->neigh_tbl = &nd_tbl;
+#endif
+ break;
+ }
+
+ mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh);
+ list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list);
+ nh->ifindex = dev->ifindex;
+
+ err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev);
+ if (err)
+ goto err_type_init;
+
+ if (nh_obj->is_reject)
+ mlxsw_sp_nexthop_obj_blackhole_init(mlxsw_sp, nh);
+
+ /* In a resilient nexthop group, all the nexthops must be written to
+ * the adjacency table. Even if they do not have a valid neighbour or
+ * RIF.
+ */
+ if (nh_grp->nhgi->is_resilient && !nh->should_offload) {
+ nh->action = MLXSW_SP_NEXTHOP_ACTION_TRAP;
+ nh->should_offload = 1;
+ }
+
+ return 0;
+
+err_type_init:
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+ return err;
+}
+
+static void mlxsw_sp_nexthop_obj_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ if (nh->action == MLXSW_SP_NEXTHOP_ACTION_DISCARD)
+ mlxsw_sp_nexthop_obj_blackhole_fini(mlxsw_sp, nh);
+ mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh);
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+ nh->should_offload = 0;
+}
+
+static int
+mlxsw_sp_nexthop_obj_group_info_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct nh_notifier_info *info)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct mlxsw_sp_nexthop *nh;
+ bool is_resilient = false;
+ unsigned int nhs;
+ int err, i;
+
+ switch (info->type) {
+ case NH_NOTIFIER_INFO_TYPE_SINGLE:
+ nhs = 1;
+ break;
+ case NH_NOTIFIER_INFO_TYPE_GRP:
+ nhs = info->nh_grp->num_nh;
+ break;
+ case NH_NOTIFIER_INFO_TYPE_RES_TABLE:
+ nhs = info->nh_res_table->num_nh_buckets;
+ is_resilient = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ nhgi = kzalloc(struct_size(nhgi, nexthops, nhs), GFP_KERNEL);
+ if (!nhgi)
+ return -ENOMEM;
+ nh_grp->nhgi = nhgi;
+ nhgi->nh_grp = nh_grp;
+ nhgi->gateway = mlxsw_sp_nexthop_obj_is_gateway(mlxsw_sp, info);
+ nhgi->is_resilient = is_resilient;
+ nhgi->count = nhs;
+ for (i = 0; i < nhgi->count; i++) {
+ struct nh_notifier_single_info *nh_obj;
+ int weight;
+
+ nh = &nhgi->nexthops[i];
+ switch (info->type) {
+ case NH_NOTIFIER_INFO_TYPE_SINGLE:
+ nh_obj = info->nh;
+ weight = 1;
+ break;
+ case NH_NOTIFIER_INFO_TYPE_GRP:
+ nh_obj = &info->nh_grp->nh_entries[i].nh;
+ weight = info->nh_grp->nh_entries[i].weight;
+ break;
+ case NH_NOTIFIER_INFO_TYPE_RES_TABLE:
+ nh_obj = &info->nh_res_table->nhs[i];
+ weight = 1;
+ break;
+ default:
+ err = -EINVAL;
+ goto err_nexthop_obj_init;
+ }
+ err = mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj,
+ weight);
+ if (err)
+ goto err_nexthop_obj_init;
+ }
+ err = mlxsw_sp_nexthop_group_inc(mlxsw_sp);
+ if (err)
+ goto err_group_inc;
+ err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(info->extack, "Failed to write adjacency entries to the device");
+ goto err_group_refresh;
+ }
+
+ /* Add resilient nexthop groups to a list so that the activity of their
+ * nexthop buckets will be periodically queried and cleared.
+ */
+ if (nhgi->is_resilient) {
+ if (list_empty(&mlxsw_sp->router->nh_res_grp_list))
+ mlxsw_sp_nh_grp_activity_work_schedule(mlxsw_sp);
+ list_add(&nhgi->list, &mlxsw_sp->router->nh_res_grp_list);
+ }
+
+ return 0;
+
+err_group_refresh:
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+err_group_inc:
+ i = nhgi->count;
+err_nexthop_obj_init:
+ for (i--; i >= 0; i--) {
+ nh = &nhgi->nexthops[i];
+ mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh);
+ }
+ kfree(nhgi);
+ return err;
+}
+
+static void
+mlxsw_sp_nexthop_obj_group_info_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ int i;
+
+ if (nhgi->is_resilient) {
+ list_del(&nhgi->list);
+ if (list_empty(&mlxsw_sp->router->nh_res_grp_list))
+ cancel_delayed_work(&router->nh_grp_activity_dw);
+ }
+
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+ for (i = nhgi->count - 1; i >= 0; i--) {
+ struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i];
+
+ mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh);
+ }
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ WARN_ON_ONCE(nhgi->adj_index_valid);
+ kfree(nhgi);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop_obj_group_create(struct mlxsw_sp *mlxsw_sp,
+ struct nh_notifier_info *info)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp;
+ int err;
+
+ nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL);
+ if (!nh_grp)
+ return ERR_PTR(-ENOMEM);
+ INIT_LIST_HEAD(&nh_grp->vr_list);
+ err = rhashtable_init(&nh_grp->vr_ht,
+ &mlxsw_sp_nexthop_group_vr_ht_params);
+ if (err)
+ goto err_nexthop_group_vr_ht_init;
+ INIT_LIST_HEAD(&nh_grp->fib_list);
+ nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ;
+ nh_grp->obj.id = info->id;
+
+ err = mlxsw_sp_nexthop_obj_group_info_init(mlxsw_sp, nh_grp, info);
+ if (err)
+ goto err_nexthop_group_info_init;
+
+ nh_grp->can_destroy = false;
+
+ return nh_grp;
+
+err_nexthop_group_info_init:
+ rhashtable_destroy(&nh_grp->vr_ht);
+err_nexthop_group_vr_ht_init:
+ kfree(nh_grp);
+ return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_nexthop_obj_group_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ if (!nh_grp->can_destroy)
+ return;
+ mlxsw_sp_nexthop_obj_group_info_fini(mlxsw_sp, nh_grp);
+ WARN_ON_ONCE(!list_empty(&nh_grp->fib_list));
+ WARN_ON_ONCE(!list_empty(&nh_grp->vr_list));
+ rhashtable_destroy(&nh_grp->vr_ht);
+ kfree(nh_grp);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop_obj_group_lookup(struct mlxsw_sp *mlxsw_sp, u32 id)
+{
+ struct mlxsw_sp_nexthop_group_cmp_arg cmp_arg;
+
+ cmp_arg.type = MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ;
+ cmp_arg.id = id;
+ return rhashtable_lookup_fast(&mlxsw_sp->router->nexthop_group_ht,
+ &cmp_arg,
+ mlxsw_sp_nexthop_group_ht_params);
+}
+
+static int mlxsw_sp_nexthop_obj_group_add(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ return mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp);
+}
+
+static int
+mlxsw_sp_nexthop_obj_group_replace(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_nexthop_group *old_nh_grp,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_nexthop_group_info *old_nhgi = old_nh_grp->nhgi;
+ struct mlxsw_sp_nexthop_group_info *new_nhgi = nh_grp->nhgi;
+ int err;
+
+ old_nh_grp->nhgi = new_nhgi;
+ new_nhgi->nh_grp = old_nh_grp;
+ nh_grp->nhgi = old_nhgi;
+ old_nhgi->nh_grp = nh_grp;
+
+ if (old_nhgi->adj_index_valid && new_nhgi->adj_index_valid) {
+ /* Both the old adjacency index and the new one are valid.
+ * Routes are currently using the old one. Tell the device to
+ * replace the old adjacency index with the new one.
+ */
+ err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, old_nh_grp,
+ old_nhgi->adj_index,
+ old_nhgi->ecmp_size);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to replace old adjacency index with new one");
+ goto err_out;
+ }
+ } else if (old_nhgi->adj_index_valid && !new_nhgi->adj_index_valid) {
+ /* The old adjacency index is valid, while the new one is not.
+ * Iterate over all the routes using the group and change them
+ * to trap packets to the CPU.
+ */
+ err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, old_nh_grp);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to update routes to trap packets");
+ goto err_out;
+ }
+ } else if (!old_nhgi->adj_index_valid && new_nhgi->adj_index_valid) {
+ /* The old adjacency index is invalid, while the new one is.
+ * Iterate over all the routes using the group and change them
+ * to forward packets using the new valid index.
+ */
+ err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, old_nh_grp);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to update routes to forward packets");
+ goto err_out;
+ }
+ }
+
+ /* Make sure the flags are set / cleared based on the new nexthop group
+ * information.
+ */
+ mlxsw_sp_nexthop_obj_group_offload_refresh(mlxsw_sp, old_nh_grp);
+
+ /* At this point 'nh_grp' is just a shell that is not used by anyone
+ * and its nexthop group info is the old info that was just replaced
+ * with the new one. Remove it.
+ */
+ nh_grp->can_destroy = true;
+ mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp);
+
+ return 0;
+
+err_out:
+ old_nhgi->nh_grp = old_nh_grp;
+ nh_grp->nhgi = new_nhgi;
+ new_nhgi->nh_grp = nh_grp;
+ old_nh_grp->nhgi = old_nhgi;
+ return err;
+}
+
+static int mlxsw_sp_nexthop_obj_new(struct mlxsw_sp *mlxsw_sp,
+ struct nh_notifier_info *info)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp, *old_nh_grp;
+ struct netlink_ext_ack *extack = info->extack;
+ int err;
+
+ nh_grp = mlxsw_sp_nexthop_obj_group_create(mlxsw_sp, info);
+ if (IS_ERR(nh_grp))
+ return PTR_ERR(nh_grp);
+
+ old_nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id);
+ if (!old_nh_grp)
+ err = mlxsw_sp_nexthop_obj_group_add(mlxsw_sp, nh_grp);
+ else
+ err = mlxsw_sp_nexthop_obj_group_replace(mlxsw_sp, nh_grp,
+ old_nh_grp, extack);
+
+ if (err) {
+ nh_grp->can_destroy = true;
+ mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp);
+ }
+
+ return err;
+}
+
+static void mlxsw_sp_nexthop_obj_del(struct mlxsw_sp *mlxsw_sp,
+ struct nh_notifier_info *info)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp;
+
+ nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id);
+ if (!nh_grp)
+ return;
+
+ nh_grp->can_destroy = true;
+ mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp);
+
+ /* If the group still has routes using it, then defer the delete
+ * operation until the last route using it is deleted.
+ */
+ if (!list_empty(&nh_grp->fib_list))
+ return;
+ mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp);
+}
+
+static int mlxsw_sp_nexthop_obj_bucket_query(struct mlxsw_sp *mlxsw_sp,
+ u32 adj_index, char *ratr_pl)
+{
+ MLXSW_REG_ZERO(ratr, ratr_pl);
+ mlxsw_reg_ratr_op_set(ratr_pl, MLXSW_REG_RATR_OP_QUERY_READ);
+ mlxsw_reg_ratr_adjacency_index_low_set(ratr_pl, adj_index);
+ mlxsw_reg_ratr_adjacency_index_high_set(ratr_pl, adj_index >> 16);
+
+ return mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl);
+}
+
+static int mlxsw_sp_nexthop_obj_bucket_compare(char *ratr_pl, char *ratr_pl_new)
+{
+ /* Clear the opcode and activity on both the old and new payload as
+ * they are irrelevant for the comparison.
+ */
+ mlxsw_reg_ratr_op_set(ratr_pl, MLXSW_REG_RATR_OP_QUERY_READ);
+ mlxsw_reg_ratr_a_set(ratr_pl, 0);
+ mlxsw_reg_ratr_op_set(ratr_pl_new, MLXSW_REG_RATR_OP_QUERY_READ);
+ mlxsw_reg_ratr_a_set(ratr_pl_new, 0);
+
+ /* If the contents of the adjacency entry are consistent with the
+ * replacement request, then replacement was successful.
+ */
+ if (!memcmp(ratr_pl, ratr_pl_new, MLXSW_REG_RATR_LEN))
+ return 0;
+
+ return -EINVAL;
+}
+
+static int
+mlxsw_sp_nexthop_obj_bucket_adj_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh,
+ struct nh_notifier_info *info)
+{
+ u16 bucket_index = info->nh_res_bucket->bucket_index;
+ struct netlink_ext_ack *extack = info->extack;
+ bool force = info->nh_res_bucket->force;
+ char ratr_pl_new[MLXSW_REG_RATR_LEN];
+ char ratr_pl[MLXSW_REG_RATR_LEN];
+ u32 adj_index;
+ int err;
+
+ /* No point in trying an atomic replacement if the idle timer interval
+ * is smaller than the interval in which we query and clear activity.
+ */
+ if (!force && info->nh_res_bucket->idle_timer_ms <
+ MLXSW_SP_NH_GRP_ACTIVITY_UPDATE_INTERVAL)
+ force = true;
+
+ adj_index = nh->nhgi->adj_index + bucket_index;
+ err = mlxsw_sp_nexthop_update(mlxsw_sp, adj_index, nh, force, ratr_pl);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to overwrite nexthop bucket");
+ return err;
+ }
+
+ if (!force) {
+ err = mlxsw_sp_nexthop_obj_bucket_query(mlxsw_sp, adj_index,
+ ratr_pl_new);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to query nexthop bucket state after replacement. State might be inconsistent");
+ return err;
+ }
+
+ err = mlxsw_sp_nexthop_obj_bucket_compare(ratr_pl, ratr_pl_new);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Nexthop bucket was not replaced because it was active during replacement");
+ return err;
+ }
+ }
+
+ nh->update = 0;
+ nh->offloaded = 1;
+ mlxsw_sp_nexthop_bucket_offload_refresh(mlxsw_sp, nh, bucket_index);
+
+ return 0;
+}
+
+static int mlxsw_sp_nexthop_obj_bucket_replace(struct mlxsw_sp *mlxsw_sp,
+ struct nh_notifier_info *info)
+{
+ u16 bucket_index = info->nh_res_bucket->bucket_index;
+ struct netlink_ext_ack *extack = info->extack;
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct nh_notifier_single_info *nh_obj;
+ struct mlxsw_sp_nexthop_group *nh_grp;
+ struct mlxsw_sp_nexthop *nh;
+ int err;
+
+ nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, info->id);
+ if (!nh_grp) {
+ NL_SET_ERR_MSG_MOD(extack, "Nexthop group was not found");
+ return -EINVAL;
+ }
+
+ nhgi = nh_grp->nhgi;
+
+ if (bucket_index >= nhgi->count) {
+ NL_SET_ERR_MSG_MOD(extack, "Nexthop bucket index out of range");
+ return -EINVAL;
+ }
+
+ nh = &nhgi->nexthops[bucket_index];
+ mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh);
+
+ nh_obj = &info->nh_res_bucket->new_nh;
+ err = mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj, 1);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to initialize nexthop object for nexthop bucket replacement");
+ goto err_nexthop_obj_init;
+ }
+
+ err = mlxsw_sp_nexthop_obj_bucket_adj_update(mlxsw_sp, nh, info);
+ if (err)
+ goto err_nexthop_obj_bucket_adj_update;
+
+ return 0;
+
+err_nexthop_obj_bucket_adj_update:
+ mlxsw_sp_nexthop_obj_fini(mlxsw_sp, nh);
+err_nexthop_obj_init:
+ nh_obj = &info->nh_res_bucket->old_nh;
+ mlxsw_sp_nexthop_obj_init(mlxsw_sp, nh_grp, nh, nh_obj, 1);
+ /* The old adjacency entry was not overwritten */
+ nh->update = 0;
+ nh->offloaded = 1;
+ return err;
+}
+
+static int mlxsw_sp_nexthop_obj_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct nh_notifier_info *info = ptr;
+ struct mlxsw_sp_router *router;
+ int err = 0;
+
+ router = container_of(nb, struct mlxsw_sp_router, nexthop_nb);
+ err = mlxsw_sp_nexthop_obj_validate(router->mlxsw_sp, event, info);
+ if (err)
+ goto out;
+
+ mutex_lock(&router->lock);
+
+ switch (event) {
+ case NEXTHOP_EVENT_REPLACE:
+ err = mlxsw_sp_nexthop_obj_new(router->mlxsw_sp, info);
+ break;
+ case NEXTHOP_EVENT_DEL:
+ mlxsw_sp_nexthop_obj_del(router->mlxsw_sp, info);
+ break;
+ case NEXTHOP_EVENT_BUCKET_REPLACE:
+ err = mlxsw_sp_nexthop_obj_bucket_replace(router->mlxsw_sp,
+ info);
+ break;
+ default:
+ break;
+ }
+
+ mutex_unlock(&router->lock);
+
+out:
+ return notifier_from_errno(err);
+}
+
+static bool mlxsw_sp_fi_is_gateway(const struct mlxsw_sp *mlxsw_sp,
+ struct fib_info *fi)
+{
+ const struct fib_nh *nh = fib_info_nh(fi, 0);
+
+ return nh->fib_nh_gw_family ||
+ mlxsw_sp_nexthop4_ipip_type(mlxsw_sp, nh, NULL);
+}
+
+static int
+mlxsw_sp_nexthop4_group_info_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ unsigned int nhs = fib_info_num_path(nh_grp->ipv4.fi);
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct mlxsw_sp_nexthop *nh;
+ int err, i;
+
+ nhgi = kzalloc(struct_size(nhgi, nexthops, nhs), GFP_KERNEL);
+ if (!nhgi)
+ return -ENOMEM;
+ nh_grp->nhgi = nhgi;
+ nhgi->nh_grp = nh_grp;
+ nhgi->gateway = mlxsw_sp_fi_is_gateway(mlxsw_sp, nh_grp->ipv4.fi);
+ nhgi->count = nhs;
+ for (i = 0; i < nhgi->count; i++) {
+ struct fib_nh *fib_nh;
+
+ nh = &nhgi->nexthops[i];
+ fib_nh = fib_info_nh(nh_grp->ipv4.fi, i);
+ err = mlxsw_sp_nexthop4_init(mlxsw_sp, nh_grp, nh, fib_nh);
+ if (err)
+ goto err_nexthop4_init;
+ }
+ err = mlxsw_sp_nexthop_group_inc(mlxsw_sp);
+ if (err)
+ goto err_group_inc;
+ err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ if (err)
+ goto err_group_refresh;
+
+ return 0;
+
+err_group_refresh:
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+err_group_inc:
+ i = nhgi->count;
+err_nexthop4_init:
+ for (i--; i >= 0; i--) {
+ nh = &nhgi->nexthops[i];
+ mlxsw_sp_nexthop4_fini(mlxsw_sp, nh);
+ }
+ kfree(nhgi);
+ return err;
+}
+
+static void
+mlxsw_sp_nexthop4_group_info_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
+ int i;
+
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+ for (i = nhgi->count - 1; i >= 0; i--) {
+ struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i];
+
+ mlxsw_sp_nexthop4_fini(mlxsw_sp, nh);
+ }
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ WARN_ON_ONCE(nhgi->adj_index_valid);
+ kfree(nhgi);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop4_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp;
+ int err;
+
+ nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL);
+ if (!nh_grp)
+ return ERR_PTR(-ENOMEM);
+ INIT_LIST_HEAD(&nh_grp->vr_list);
+ err = rhashtable_init(&nh_grp->vr_ht,
+ &mlxsw_sp_nexthop_group_vr_ht_params);
+ if (err)
+ goto err_nexthop_group_vr_ht_init;
+ INIT_LIST_HEAD(&nh_grp->fib_list);
+ nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV4;
+ nh_grp->ipv4.fi = fi;
+ fib_info_hold(fi);
+
+ err = mlxsw_sp_nexthop4_group_info_init(mlxsw_sp, nh_grp);
+ if (err)
+ goto err_nexthop_group_info_init;
+
+ err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp);
+ if (err)
+ goto err_nexthop_group_insert;
+
+ nh_grp->can_destroy = true;
+
+ return nh_grp;
+
+err_nexthop_group_insert:
+ mlxsw_sp_nexthop4_group_info_fini(mlxsw_sp, nh_grp);
+err_nexthop_group_info_init:
+ fib_info_put(fi);
+ rhashtable_destroy(&nh_grp->vr_ht);
+err_nexthop_group_vr_ht_init:
+ kfree(nh_grp);
+ return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_nexthop4_group_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ if (!nh_grp->can_destroy)
+ return;
+ mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp);
+ mlxsw_sp_nexthop4_group_info_fini(mlxsw_sp, nh_grp);
+ fib_info_put(nh_grp->ipv4.fi);
+ WARN_ON_ONCE(!list_empty(&nh_grp->vr_list));
+ rhashtable_destroy(&nh_grp->vr_ht);
+ kfree(nh_grp);
+}
+
+static int mlxsw_sp_nexthop4_group_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ struct fib_info *fi)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp;
+
+ if (fi->nh) {
+ nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp,
+ fi->nh->id);
+ if (WARN_ON_ONCE(!nh_grp))
+ return -EINVAL;
+ goto out;
+ }
+
+ nh_grp = mlxsw_sp_nexthop4_group_lookup(mlxsw_sp, fi);
+ if (!nh_grp) {
+ nh_grp = mlxsw_sp_nexthop4_group_create(mlxsw_sp, fi);
+ if (IS_ERR(nh_grp))
+ return PTR_ERR(nh_grp);
+ }
+out:
+ list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list);
+ fib_entry->nh_group = nh_grp;
+ return 0;
+}
+
+static void mlxsw_sp_nexthop4_group_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group;
+
+ list_del(&fib_entry->nexthop_group_node);
+ if (!list_empty(&nh_grp->fib_list))
+ return;
+
+ if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ) {
+ mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp);
+ return;
+ }
+
+ mlxsw_sp_nexthop4_group_destroy(mlxsw_sp, nh_grp);
+}
+
+static bool
+mlxsw_sp_fib4_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+
+ fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry,
+ common);
+ return !fib4_entry->dscp;
+}
+
+static bool
+mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group;
+
+ switch (fib_entry->fib_node->fib->proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ if (!mlxsw_sp_fib4_entry_should_offload(fib_entry))
+ return false;
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ break;
+ }
+
+ switch (fib_entry->type) {
+ case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
+ return !!nh_group->nhgi->adj_index_valid;
+ case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
+ return !!nh_group->nhgi->nh_rif;
+ case MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE:
+ case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP:
+ case MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static struct mlxsw_sp_nexthop *
+mlxsw_sp_rt6_nexthop(struct mlxsw_sp_nexthop_group *nh_grp,
+ const struct mlxsw_sp_rt6 *mlxsw_sp_rt6)
+{
+ int i;
+
+ for (i = 0; i < nh_grp->nhgi->count; i++) {
+ struct mlxsw_sp_nexthop *nh = &nh_grp->nhgi->nexthops[i];
+ struct fib6_info *rt = mlxsw_sp_rt6->rt;
+
+ if (nh->rif && nh->rif->dev == rt->fib6_nh->fib_nh_dev &&
+ ipv6_addr_equal((const struct in6_addr *) &nh->gw_addr,
+ &rt->fib6_nh->fib_nh_gw6))
+ return nh;
+ }
+
+ return NULL;
+}
+
+static void
+mlxsw_sp_fib4_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
+ struct fib_entry_notifier_info *fen_info)
+{
+ u32 *p_dst = (u32 *) &fen_info->dst;
+ struct fib_rt_info fri;
+
+ fri.fi = fen_info->fi;
+ fri.tb_id = fen_info->tb_id;
+ fri.dst = cpu_to_be32(*p_dst);
+ fri.dst_len = fen_info->dst_len;
+ fri.dscp = fen_info->dscp;
+ fri.type = fen_info->type;
+ fri.offload = false;
+ fri.trap = false;
+ fri.offload_failed = true;
+ fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri);
+}
+
+static void
+mlxsw_sp_fib4_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ u32 *p_dst = (u32 *) fib_entry->fib_node->key.addr;
+ int dst_len = fib_entry->fib_node->key.prefix_len;
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+ struct fib_rt_info fri;
+ bool should_offload;
+
+ should_offload = mlxsw_sp_fib_entry_should_offload(fib_entry);
+ fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry,
+ common);
+ fri.fi = fib4_entry->fi;
+ fri.tb_id = fib4_entry->tb_id;
+ fri.dst = cpu_to_be32(*p_dst);
+ fri.dst_len = dst_len;
+ fri.dscp = fib4_entry->dscp;
+ fri.type = fib4_entry->type;
+ fri.offload = should_offload;
+ fri.trap = !should_offload;
+ fri.offload_failed = false;
+ fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri);
+}
+
+static void
+mlxsw_sp_fib4_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ u32 *p_dst = (u32 *) fib_entry->fib_node->key.addr;
+ int dst_len = fib_entry->fib_node->key.prefix_len;
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+ struct fib_rt_info fri;
+
+ fib4_entry = container_of(fib_entry, struct mlxsw_sp_fib4_entry,
+ common);
+ fri.fi = fib4_entry->fi;
+ fri.tb_id = fib4_entry->tb_id;
+ fri.dst = cpu_to_be32(*p_dst);
+ fri.dst_len = dst_len;
+ fri.dscp = fib4_entry->dscp;
+ fri.type = fib4_entry->type;
+ fri.offload = false;
+ fri.trap = false;
+ fri.offload_failed = false;
+ fib_alias_hw_flags_set(mlxsw_sp_net(mlxsw_sp), &fri);
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void
+mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
+ struct fib6_info **rt_arr,
+ unsigned int nrt6)
+{
+ int i;
+
+ /* In IPv6 a multipath route is represented using multiple routes, so
+ * we need to set the flags on all of them.
+ */
+ for (i = 0; i < nrt6; i++)
+ fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), rt_arr[i],
+ false, false, true);
+}
+#else
+static void
+mlxsw_sp_fib6_offload_failed_flag_set(struct mlxsw_sp *mlxsw_sp,
+ struct fib6_info **rt_arr,
+ unsigned int nrt6)
+{
+}
+#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void
+mlxsw_sp_fib6_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+ bool should_offload;
+
+ should_offload = mlxsw_sp_fib_entry_should_offload(fib_entry);
+
+ /* In IPv6 a multipath route is represented using multiple routes, so
+ * we need to set the flags on all of them.
+ */
+ fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry,
+ common);
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list)
+ fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), mlxsw_sp_rt6->rt,
+ should_offload, !should_offload, false);
+}
+#else
+static void
+mlxsw_sp_fib6_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+}
+#endif
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void
+mlxsw_sp_fib6_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ fib6_entry = container_of(fib_entry, struct mlxsw_sp_fib6_entry,
+ common);
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list)
+ fib6_info_hw_flags_set(mlxsw_sp_net(mlxsw_sp), mlxsw_sp_rt6->rt,
+ false, false, false);
+}
+#else
+static void
+mlxsw_sp_fib6_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+}
+#endif
+
+static void
+mlxsw_sp_fib_entry_hw_flags_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ switch (fib_entry->fib_node->fib->proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ mlxsw_sp_fib4_entry_hw_flags_set(mlxsw_sp, fib_entry);
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ mlxsw_sp_fib6_entry_hw_flags_set(mlxsw_sp, fib_entry);
+ break;
+ }
+}
+
+static void
+mlxsw_sp_fib_entry_hw_flags_clear(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ switch (fib_entry->fib_node->fib->proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ mlxsw_sp_fib4_entry_hw_flags_clear(mlxsw_sp, fib_entry);
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ mlxsw_sp_fib6_entry_hw_flags_clear(mlxsw_sp, fib_entry);
+ break;
+ }
+}
+
+static void
+mlxsw_sp_fib_entry_hw_flags_refresh(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ switch (op) {
+ case MLXSW_REG_RALUE_OP_WRITE_WRITE:
+ mlxsw_sp_fib_entry_hw_flags_set(mlxsw_sp, fib_entry);
+ break;
+ case MLXSW_REG_RALUE_OP_WRITE_DELETE:
+ mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, fib_entry);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+mlxsw_sp_fib_entry_ralue_pack(char *ralue_pl,
+ const struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib;
+ enum mlxsw_reg_ralxx_protocol proto;
+ u32 *p_dip;
+
+ proto = (enum mlxsw_reg_ralxx_protocol) fib->proto;
+
+ switch (fib->proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ p_dip = (u32 *) fib_entry->fib_node->key.addr;
+ mlxsw_reg_ralue_pack4(ralue_pl, proto, op, fib->vr->id,
+ fib_entry->fib_node->key.prefix_len,
+ *p_dip);
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ mlxsw_reg_ralue_pack6(ralue_pl, proto, op, fib->vr->id,
+ fib_entry->fib_node->key.prefix_len,
+ fib_entry->fib_node->key.addr);
+ break;
+ }
+}
+
+static int mlxsw_sp_fib_entry_op_remote(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group;
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_group->nhgi;
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+ enum mlxsw_reg_ralue_trap_action trap_action;
+ u16 trap_id = 0;
+ u32 adjacency_index = 0;
+ u16 ecmp_size = 0;
+
+ /* In case the nexthop group adjacency index is valid, use it
+ * with provided ECMP size. Otherwise, setup trap and pass
+ * traffic to kernel.
+ */
+ if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
+ adjacency_index = nhgi->adj_index;
+ ecmp_size = nhgi->ecmp_size;
+ } else if (!nhgi->adj_index_valid && nhgi->count && nhgi->nh_rif) {
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
+ adjacency_index = mlxsw_sp->router->adj_trap_index;
+ ecmp_size = 1;
+ } else {
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
+ trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
+ }
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id,
+ adjacency_index, ecmp_size);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int mlxsw_sp_fib_entry_op_local(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ struct mlxsw_sp_rif *rif = fib_entry->nh_group->nhgi->nh_rif;
+ enum mlxsw_reg_ralue_trap_action trap_action;
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+ u16 trap_id = 0;
+ u16 rif_index = 0;
+
+ if (mlxsw_sp_fib_entry_should_offload(fib_entry)) {
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP;
+ rif_index = rif->rif_index;
+ } else {
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
+ trap_id = MLXSW_TRAP_ID_RTR_INGRESS0;
+ }
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id,
+ rif_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int mlxsw_sp_fib_entry_op_trap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_ip2me_pack(ralue_pl);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int mlxsw_sp_fib_entry_op_blackhole(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ enum mlxsw_reg_ralue_trap_action trap_action;
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_DISCARD_ERROR;
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, 0, 0);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int
+mlxsw_sp_fib_entry_op_unreachable(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ enum mlxsw_reg_ralue_trap_action trap_action;
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+ u16 trap_id;
+
+ trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP;
+ trap_id = MLXSW_TRAP_ID_RTR_INGRESS1;
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, 0);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int
+mlxsw_sp_fib_entry_op_ipip_decap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ struct mlxsw_sp_ipip_entry *ipip_entry = fib_entry->decap.ipip_entry;
+ const struct mlxsw_sp_ipip_ops *ipip_ops;
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+ int err;
+
+ if (WARN_ON(!ipip_entry))
+ return -EINVAL;
+
+ ipip_ops = mlxsw_sp->router->ipip_ops_arr[ipip_entry->ipipt];
+ err = ipip_ops->decap_config(mlxsw_sp, ipip_entry,
+ fib_entry->decap.tunnel_index);
+ if (err)
+ return err;
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_ip2me_tun_pack(ralue_pl,
+ fib_entry->decap.tunnel_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int mlxsw_sp_fib_entry_op_nve_decap(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ char ralue_pl[MLXSW_REG_RALUE_LEN];
+
+ mlxsw_sp_fib_entry_ralue_pack(ralue_pl, fib_entry, op);
+ mlxsw_reg_ralue_act_ip2me_tun_pack(ralue_pl,
+ fib_entry->decap.tunnel_index);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl);
+}
+
+static int __mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ switch (fib_entry->type) {
+ case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE:
+ return mlxsw_sp_fib_entry_op_remote(mlxsw_sp, fib_entry, op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL:
+ return mlxsw_sp_fib_entry_op_local(mlxsw_sp, fib_entry, op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_TRAP:
+ return mlxsw_sp_fib_entry_op_trap(mlxsw_sp, fib_entry, op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE:
+ return mlxsw_sp_fib_entry_op_blackhole(mlxsw_sp, fib_entry, op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE:
+ return mlxsw_sp_fib_entry_op_unreachable(mlxsw_sp, fib_entry,
+ op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP:
+ return mlxsw_sp_fib_entry_op_ipip_decap(mlxsw_sp,
+ fib_entry, op);
+ case MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP:
+ return mlxsw_sp_fib_entry_op_nve_decap(mlxsw_sp, fib_entry, op);
+ }
+ return -EINVAL;
+}
+
+static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ enum mlxsw_reg_ralue_op op)
+{
+ int err = __mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, op);
+
+ if (err)
+ return err;
+
+ mlxsw_sp_fib_entry_hw_flags_refresh(mlxsw_sp, fib_entry, op);
+
+ return err;
+}
+
+static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
+ MLXSW_REG_RALUE_OP_WRITE_WRITE);
+}
+
+static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry,
+ MLXSW_REG_RALUE_OP_WRITE_DELETE);
+}
+
+static int
+mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp,
+ const struct fib_entry_notifier_info *fen_info,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = fib_entry->nh_group->nhgi;
+ union mlxsw_sp_l3addr dip = { .addr4 = htonl(fen_info->dst) };
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ u32 tb_id = mlxsw_sp_fix_tb_id(fen_info->tb_id);
+ int ifindex = nhgi->nexthops[0].ifindex;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ switch (fen_info->type) {
+ case RTN_LOCAL:
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, ifindex,
+ MLXSW_SP_L3_PROTO_IPV4, dip);
+ if (ipip_entry && ipip_entry->ol_dev->flags & IFF_UP) {
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP;
+ return mlxsw_sp_fib_entry_decap_init(mlxsw_sp,
+ fib_entry,
+ ipip_entry);
+ }
+ if (mlxsw_sp_router_nve_is_decap(mlxsw_sp, tb_id,
+ MLXSW_SP_L3_PROTO_IPV4,
+ &dip)) {
+ u32 tunnel_index;
+
+ tunnel_index = router->nve_decap_config.tunnel_index;
+ fib_entry->decap.tunnel_index = tunnel_index;
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP;
+ return 0;
+ }
+ fallthrough;
+ case RTN_BROADCAST:
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ return 0;
+ case RTN_BLACKHOLE:
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE;
+ return 0;
+ case RTN_UNREACHABLE:
+ case RTN_PROHIBIT:
+ /* Packets hitting these routes need to be trapped, but
+ * can do so with a lower priority than packets directed
+ * at the host, so use action type local instead of trap.
+ */
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE;
+ return 0;
+ case RTN_UNICAST:
+ if (nhgi->gateway)
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE;
+ else
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static void
+mlxsw_sp_fib_entry_type_unset(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ switch (fib_entry->type) {
+ case MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP:
+ mlxsw_sp_fib_entry_decap_fini(mlxsw_sp, fib_entry);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+mlxsw_sp_fib4_entry_type_unset(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib4_entry *fib4_entry)
+{
+ mlxsw_sp_fib_entry_type_unset(mlxsw_sp, &fib4_entry->common);
+}
+
+static struct mlxsw_sp_fib4_entry *
+mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node,
+ const struct fib_entry_notifier_info *fen_info)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+ struct mlxsw_sp_fib_entry *fib_entry;
+ int err;
+
+ fib4_entry = kzalloc(sizeof(*fib4_entry), GFP_KERNEL);
+ if (!fib4_entry)
+ return ERR_PTR(-ENOMEM);
+ fib_entry = &fib4_entry->common;
+
+ err = mlxsw_sp_nexthop4_group_get(mlxsw_sp, fib_entry, fen_info->fi);
+ if (err)
+ goto err_nexthop4_group_get;
+
+ err = mlxsw_sp_nexthop_group_vr_link(fib_entry->nh_group,
+ fib_node->fib);
+ if (err)
+ goto err_nexthop_group_vr_link;
+
+ err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry);
+ if (err)
+ goto err_fib4_entry_type_set;
+
+ fib4_entry->fi = fen_info->fi;
+ fib_info_hold(fib4_entry->fi);
+ fib4_entry->tb_id = fen_info->tb_id;
+ fib4_entry->type = fen_info->type;
+ fib4_entry->dscp = fen_info->dscp;
+
+ fib_entry->fib_node = fib_node;
+
+ return fib4_entry;
+
+err_fib4_entry_type_set:
+ mlxsw_sp_nexthop_group_vr_unlink(fib_entry->nh_group, fib_node->fib);
+err_nexthop_group_vr_link:
+ mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common);
+err_nexthop4_group_get:
+ kfree(fib4_entry);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib4_entry *fib4_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node;
+
+ fib_info_put(fib4_entry->fi);
+ mlxsw_sp_fib4_entry_type_unset(mlxsw_sp, fib4_entry);
+ mlxsw_sp_nexthop_group_vr_unlink(fib4_entry->common.nh_group,
+ fib_node->fib);
+ mlxsw_sp_nexthop4_group_put(mlxsw_sp, &fib4_entry->common);
+ kfree(fib4_entry);
+}
+
+static struct mlxsw_sp_fib4_entry *
+mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp,
+ const struct fib_entry_notifier_info *fen_info)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+ struct mlxsw_sp_fib_node *fib_node;
+ struct mlxsw_sp_fib *fib;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_find(mlxsw_sp, fen_info->tb_id);
+ if (!vr)
+ return NULL;
+ fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4);
+
+ fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst,
+ sizeof(fen_info->dst),
+ fen_info->dst_len);
+ if (!fib_node)
+ return NULL;
+
+ fib4_entry = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib4_entry, common);
+ if (fib4_entry->tb_id == fen_info->tb_id &&
+ fib4_entry->dscp == fen_info->dscp &&
+ fib4_entry->type == fen_info->type &&
+ fib4_entry->fi == fen_info->fi)
+ return fib4_entry;
+
+ return NULL;
+}
+
+static const struct rhashtable_params mlxsw_sp_fib_ht_params = {
+ .key_offset = offsetof(struct mlxsw_sp_fib_node, key),
+ .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node),
+ .key_len = sizeof(struct mlxsw_sp_fib_key),
+ .automatic_shrinking = true,
+};
+
+static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node,
+ mlxsw_sp_fib_ht_params);
+}
+
+static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ rhashtable_remove_fast(&fib->ht, &fib_node->ht_node,
+ mlxsw_sp_fib_ht_params);
+}
+
+static struct mlxsw_sp_fib_node *
+mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr,
+ size_t addr_len, unsigned char prefix_len)
+{
+ struct mlxsw_sp_fib_key key;
+
+ memset(&key, 0, sizeof(key));
+ memcpy(key.addr, addr, addr_len);
+ key.prefix_len = prefix_len;
+ return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params);
+}
+
+static struct mlxsw_sp_fib_node *
+mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr,
+ size_t addr_len, unsigned char prefix_len)
+{
+ struct mlxsw_sp_fib_node *fib_node;
+
+ fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL);
+ if (!fib_node)
+ return NULL;
+
+ list_add(&fib_node->list, &fib->node_list);
+ memcpy(fib_node->key.addr, addr, addr_len);
+ fib_node->key.prefix_len = prefix_len;
+
+ return fib_node;
+}
+
+static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node)
+{
+ list_del(&fib_node->list);
+ kfree(fib_node);
+}
+
+static int mlxsw_sp_fib_lpm_tree_link(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_prefix_usage req_prefix_usage;
+ struct mlxsw_sp_fib *fib = fib_node->fib;
+ struct mlxsw_sp_lpm_tree *lpm_tree;
+ int err;
+
+ lpm_tree = mlxsw_sp->router->lpm.proto_trees[fib->proto];
+ if (lpm_tree->prefix_ref_count[fib_node->key.prefix_len] != 0)
+ goto out;
+
+ mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &lpm_tree->prefix_usage);
+ mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len);
+ lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
+ fib->proto);
+ if (IS_ERR(lpm_tree))
+ return PTR_ERR(lpm_tree);
+
+ err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree);
+ if (err)
+ goto err_lpm_tree_replace;
+
+out:
+ lpm_tree->prefix_ref_count[fib_node->key.prefix_len]++;
+ return 0;
+
+err_lpm_tree_replace:
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+ return err;
+}
+
+static void mlxsw_sp_fib_lpm_tree_unlink(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree;
+ struct mlxsw_sp_prefix_usage req_prefix_usage;
+ struct mlxsw_sp_fib *fib = fib_node->fib;
+ int err;
+
+ if (--lpm_tree->prefix_ref_count[fib_node->key.prefix_len] != 0)
+ return;
+ /* Try to construct a new LPM tree from the current prefix usage
+ * minus the unused one. If we fail, continue using the old one.
+ */
+ mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &lpm_tree->prefix_usage);
+ mlxsw_sp_prefix_usage_clear(&req_prefix_usage,
+ fib_node->key.prefix_len);
+ lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage,
+ fib->proto);
+ if (IS_ERR(lpm_tree))
+ return;
+
+ err = mlxsw_sp_vrs_lpm_tree_replace(mlxsw_sp, fib, lpm_tree);
+ if (err)
+ goto err_lpm_tree_replace;
+
+ return;
+
+err_lpm_tree_replace:
+ mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree);
+}
+
+static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node,
+ struct mlxsw_sp_fib *fib)
+{
+ int err;
+
+ err = mlxsw_sp_fib_node_insert(fib, fib_node);
+ if (err)
+ return err;
+ fib_node->fib = fib;
+
+ err = mlxsw_sp_fib_lpm_tree_link(mlxsw_sp, fib_node);
+ if (err)
+ goto err_fib_lpm_tree_link;
+
+ return 0;
+
+err_fib_lpm_tree_link:
+ fib_node->fib = NULL;
+ mlxsw_sp_fib_node_remove(fib, fib_node);
+ return err;
+}
+
+static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_fib *fib = fib_node->fib;
+
+ mlxsw_sp_fib_lpm_tree_unlink(mlxsw_sp, fib_node);
+ fib_node->fib = NULL;
+ mlxsw_sp_fib_node_remove(fib, fib_node);
+}
+
+static struct mlxsw_sp_fib_node *
+mlxsw_sp_fib_node_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id, const void *addr,
+ size_t addr_len, unsigned char prefix_len,
+ enum mlxsw_sp_l3proto proto)
+{
+ struct mlxsw_sp_fib_node *fib_node;
+ struct mlxsw_sp_fib *fib;
+ struct mlxsw_sp_vr *vr;
+ int err;
+
+ vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, NULL);
+ if (IS_ERR(vr))
+ return ERR_CAST(vr);
+ fib = mlxsw_sp_vr_fib(vr, proto);
+
+ fib_node = mlxsw_sp_fib_node_lookup(fib, addr, addr_len, prefix_len);
+ if (fib_node)
+ return fib_node;
+
+ fib_node = mlxsw_sp_fib_node_create(fib, addr, addr_len, prefix_len);
+ if (!fib_node) {
+ err = -ENOMEM;
+ goto err_fib_node_create;
+ }
+
+ err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib);
+ if (err)
+ goto err_fib_node_init;
+
+ return fib_node;
+
+err_fib_node_init:
+ mlxsw_sp_fib_node_destroy(fib_node);
+err_fib_node_create:
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_fib_node_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_vr *vr = fib_node->fib->vr;
+
+ if (fib_node->fib_entry)
+ return;
+ mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node);
+ mlxsw_sp_fib_node_destroy(fib_node);
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+}
+
+static int mlxsw_sp_fib_node_entry_link(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
+ int err;
+
+ fib_node->fib_entry = fib_entry;
+
+ err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry);
+ if (err)
+ goto err_fib_entry_update;
+
+ return 0;
+
+err_fib_entry_update:
+ fib_node->fib_entry = NULL;
+ return err;
+}
+
+static void
+mlxsw_sp_fib_node_entry_unlink(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node;
+
+ mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry);
+ fib_node->fib_entry = NULL;
+}
+
+static bool mlxsw_sp_fib4_allow_replace(struct mlxsw_sp_fib4_entry *fib4_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib4_entry->common.fib_node;
+ struct mlxsw_sp_fib4_entry *fib4_replaced;
+
+ if (!fib_node->fib_entry)
+ return true;
+
+ fib4_replaced = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib4_entry, common);
+ if (fib4_entry->tb_id == RT_TABLE_MAIN &&
+ fib4_replaced->tb_id == RT_TABLE_LOCAL)
+ return false;
+
+ return true;
+}
+
+static int
+mlxsw_sp_router_fib4_replace(struct mlxsw_sp *mlxsw_sp,
+ const struct fib_entry_notifier_info *fen_info)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry, *fib4_replaced;
+ struct mlxsw_sp_fib_entry *replaced;
+ struct mlxsw_sp_fib_node *fib_node;
+ int err;
+
+ if (fen_info->fi->nh &&
+ !mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, fen_info->fi->nh->id))
+ return 0;
+
+ fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, fen_info->tb_id,
+ &fen_info->dst, sizeof(fen_info->dst),
+ fen_info->dst_len,
+ MLXSW_SP_L3_PROTO_IPV4);
+ if (IS_ERR(fib_node)) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n");
+ return PTR_ERR(fib_node);
+ }
+
+ fib4_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info);
+ if (IS_ERR(fib4_entry)) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n");
+ err = PTR_ERR(fib4_entry);
+ goto err_fib4_entry_create;
+ }
+
+ if (!mlxsw_sp_fib4_allow_replace(fib4_entry)) {
+ mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return 0;
+ }
+
+ replaced = fib_node->fib_entry;
+ err = mlxsw_sp_fib_node_entry_link(mlxsw_sp, &fib4_entry->common);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n");
+ goto err_fib_node_entry_link;
+ }
+
+ /* Nothing to replace */
+ if (!replaced)
+ return 0;
+
+ mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, replaced);
+ fib4_replaced = container_of(replaced, struct mlxsw_sp_fib4_entry,
+ common);
+ mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_replaced);
+
+ return 0;
+
+err_fib_node_entry_link:
+ fib_node->fib_entry = replaced;
+ mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry);
+err_fib4_entry_create:
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return err;
+}
+
+static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp,
+ struct fib_entry_notifier_info *fen_info)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+ struct mlxsw_sp_fib_node *fib_node;
+
+ fib4_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info);
+ if (!fib4_entry)
+ return;
+ fib_node = fib4_entry->common.fib_node;
+
+ mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, &fib4_entry->common);
+ mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+}
+
+static bool mlxsw_sp_fib6_rt_should_ignore(const struct fib6_info *rt)
+{
+ /* Multicast routes aren't supported, so ignore them. Neighbour
+ * Discovery packets are specifically trapped.
+ */
+ if (ipv6_addr_type(&rt->fib6_dst.addr) & IPV6_ADDR_MULTICAST)
+ return true;
+
+ /* Cloned routes are irrelevant in the forwarding path. */
+ if (rt->fib6_flags & RTF_CACHE)
+ return true;
+
+ return false;
+}
+
+static struct mlxsw_sp_rt6 *mlxsw_sp_rt6_create(struct fib6_info *rt)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ mlxsw_sp_rt6 = kzalloc(sizeof(*mlxsw_sp_rt6), GFP_KERNEL);
+ if (!mlxsw_sp_rt6)
+ return ERR_PTR(-ENOMEM);
+
+ /* In case of route replace, replaced route is deleted with
+ * no notification. Take reference to prevent accessing freed
+ * memory.
+ */
+ mlxsw_sp_rt6->rt = rt;
+ fib6_info_hold(rt);
+
+ return mlxsw_sp_rt6;
+}
+
+#if IS_ENABLED(CONFIG_IPV6)
+static void mlxsw_sp_rt6_release(struct fib6_info *rt)
+{
+ fib6_info_release(rt);
+}
+#else
+static void mlxsw_sp_rt6_release(struct fib6_info *rt)
+{
+}
+#endif
+
+static void mlxsw_sp_rt6_destroy(struct mlxsw_sp_rt6 *mlxsw_sp_rt6)
+{
+ struct fib6_nh *fib6_nh = mlxsw_sp_rt6->rt->fib6_nh;
+
+ if (!mlxsw_sp_rt6->rt->nh)
+ fib6_nh->fib_nh_flags &= ~RTNH_F_OFFLOAD;
+ mlxsw_sp_rt6_release(mlxsw_sp_rt6->rt);
+ kfree(mlxsw_sp_rt6);
+}
+
+static struct fib6_info *
+mlxsw_sp_fib6_entry_rt(const struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ return list_first_entry(&fib6_entry->rt6_list, struct mlxsw_sp_rt6,
+ list)->rt;
+}
+
+static struct mlxsw_sp_rt6 *
+mlxsw_sp_fib6_entry_rt_find(const struct mlxsw_sp_fib6_entry *fib6_entry,
+ const struct fib6_info *rt)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+
+ list_for_each_entry(mlxsw_sp_rt6, &fib6_entry->rt6_list, list) {
+ if (mlxsw_sp_rt6->rt == rt)
+ return mlxsw_sp_rt6;
+ }
+
+ return NULL;
+}
+
+static bool mlxsw_sp_nexthop6_ipip_type(const struct mlxsw_sp *mlxsw_sp,
+ const struct fib6_info *rt,
+ enum mlxsw_sp_ipip_type *ret)
+{
+ return rt->fib6_nh->fib_nh_dev &&
+ mlxsw_sp_netdev_ipip_type(mlxsw_sp, rt->fib6_nh->fib_nh_dev, ret);
+}
+
+static int mlxsw_sp_nexthop6_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_nexthop *nh,
+ const struct fib6_info *rt)
+{
+ struct net_device *dev = rt->fib6_nh->fib_nh_dev;
+ int err;
+
+ nh->nhgi = nh_grp->nhgi;
+ nh->nh_weight = rt->fib6_nh->fib_nh_weight;
+ memcpy(&nh->gw_addr, &rt->fib6_nh->fib_nh_gw6, sizeof(nh->gw_addr));
+#if IS_ENABLED(CONFIG_IPV6)
+ nh->neigh_tbl = &nd_tbl;
+#endif
+ mlxsw_sp_nexthop_counter_alloc(mlxsw_sp, nh);
+
+ list_add_tail(&nh->router_list_node, &mlxsw_sp->router->nexthop_list);
+
+ if (!dev)
+ return 0;
+ nh->ifindex = dev->ifindex;
+
+ err = mlxsw_sp_nexthop_type_init(mlxsw_sp, nh, dev);
+ if (err)
+ goto err_nexthop_type_init;
+
+ return 0;
+
+err_nexthop_type_init:
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+ return err;
+}
+
+static void mlxsw_sp_nexthop6_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop *nh)
+{
+ mlxsw_sp_nexthop_type_fini(mlxsw_sp, nh);
+ list_del(&nh->router_list_node);
+ mlxsw_sp_nexthop_counter_free(mlxsw_sp, nh);
+}
+
+static bool mlxsw_sp_rt6_is_gateway(const struct mlxsw_sp *mlxsw_sp,
+ const struct fib6_info *rt)
+{
+ return rt->fib6_nh->fib_nh_gw_family ||
+ mlxsw_sp_nexthop6_ipip_type(mlxsw_sp, rt, NULL);
+}
+
+static int
+mlxsw_sp_nexthop6_group_info_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi;
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+ struct mlxsw_sp_nexthop *nh;
+ int err, i;
+
+ nhgi = kzalloc(struct_size(nhgi, nexthops, fib6_entry->nrt6),
+ GFP_KERNEL);
+ if (!nhgi)
+ return -ENOMEM;
+ nh_grp->nhgi = nhgi;
+ nhgi->nh_grp = nh_grp;
+ mlxsw_sp_rt6 = list_first_entry(&fib6_entry->rt6_list,
+ struct mlxsw_sp_rt6, list);
+ nhgi->gateway = mlxsw_sp_rt6_is_gateway(mlxsw_sp, mlxsw_sp_rt6->rt);
+ nhgi->count = fib6_entry->nrt6;
+ for (i = 0; i < nhgi->count; i++) {
+ struct fib6_info *rt = mlxsw_sp_rt6->rt;
+
+ nh = &nhgi->nexthops[i];
+ err = mlxsw_sp_nexthop6_init(mlxsw_sp, nh_grp, nh, rt);
+ if (err)
+ goto err_nexthop6_init;
+ mlxsw_sp_rt6 = list_next_entry(mlxsw_sp_rt6, list);
+ }
+ nh_grp->nhgi = nhgi;
+ err = mlxsw_sp_nexthop_group_inc(mlxsw_sp);
+ if (err)
+ goto err_group_inc;
+ err = mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ if (err)
+ goto err_group_refresh;
+
+ return 0;
+
+err_group_refresh:
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+err_group_inc:
+ i = nhgi->count;
+err_nexthop6_init:
+ for (i--; i >= 0; i--) {
+ nh = &nhgi->nexthops[i];
+ mlxsw_sp_nexthop6_fini(mlxsw_sp, nh);
+ }
+ kfree(nhgi);
+ return err;
+}
+
+static void
+mlxsw_sp_nexthop6_group_info_fini(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = nh_grp->nhgi;
+ int i;
+
+ mlxsw_sp_nexthop_group_dec(mlxsw_sp);
+ for (i = nhgi->count - 1; i >= 0; i--) {
+ struct mlxsw_sp_nexthop *nh = &nhgi->nexthops[i];
+
+ mlxsw_sp_nexthop6_fini(mlxsw_sp, nh);
+ }
+ mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp);
+ WARN_ON_ONCE(nhgi->adj_index_valid);
+ kfree(nhgi);
+}
+
+static struct mlxsw_sp_nexthop_group *
+mlxsw_sp_nexthop6_group_create(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp;
+ int err;
+
+ nh_grp = kzalloc(sizeof(*nh_grp), GFP_KERNEL);
+ if (!nh_grp)
+ return ERR_PTR(-ENOMEM);
+ INIT_LIST_HEAD(&nh_grp->vr_list);
+ err = rhashtable_init(&nh_grp->vr_ht,
+ &mlxsw_sp_nexthop_group_vr_ht_params);
+ if (err)
+ goto err_nexthop_group_vr_ht_init;
+ INIT_LIST_HEAD(&nh_grp->fib_list);
+ nh_grp->type = MLXSW_SP_NEXTHOP_GROUP_TYPE_IPV6;
+
+ err = mlxsw_sp_nexthop6_group_info_init(mlxsw_sp, nh_grp, fib6_entry);
+ if (err)
+ goto err_nexthop_group_info_init;
+
+ err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp);
+ if (err)
+ goto err_nexthop_group_insert;
+
+ nh_grp->can_destroy = true;
+
+ return nh_grp;
+
+err_nexthop_group_insert:
+ mlxsw_sp_nexthop6_group_info_fini(mlxsw_sp, nh_grp);
+err_nexthop_group_info_init:
+ rhashtable_destroy(&nh_grp->vr_ht);
+err_nexthop_group_vr_ht_init:
+ kfree(nh_grp);
+ return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_nexthop6_group_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_nexthop_group *nh_grp)
+{
+ if (!nh_grp->can_destroy)
+ return;
+ mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp);
+ mlxsw_sp_nexthop6_group_info_fini(mlxsw_sp, nh_grp);
+ WARN_ON_ONCE(!list_empty(&nh_grp->vr_list));
+ rhashtable_destroy(&nh_grp->vr_ht);
+ kfree(nh_grp);
+}
+
+static int mlxsw_sp_nexthop6_group_get(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct fib6_info *rt = mlxsw_sp_fib6_entry_rt(fib6_entry);
+ struct mlxsw_sp_nexthop_group *nh_grp;
+
+ if (rt->nh) {
+ nh_grp = mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp,
+ rt->nh->id);
+ if (WARN_ON_ONCE(!nh_grp))
+ return -EINVAL;
+ goto out;
+ }
+
+ nh_grp = mlxsw_sp_nexthop6_group_lookup(mlxsw_sp, fib6_entry);
+ if (!nh_grp) {
+ nh_grp = mlxsw_sp_nexthop6_group_create(mlxsw_sp, fib6_entry);
+ if (IS_ERR(nh_grp))
+ return PTR_ERR(nh_grp);
+ }
+
+ /* The route and the nexthop are described by the same struct, so we
+ * need to the update the nexthop offload indication for the new route.
+ */
+ __mlxsw_sp_nexthop6_group_offload_refresh(nh_grp, fib6_entry);
+
+out:
+ list_add_tail(&fib6_entry->common.nexthop_group_node,
+ &nh_grp->fib_list);
+ fib6_entry->common.nh_group = nh_grp;
+
+ return 0;
+}
+
+static void mlxsw_sp_nexthop6_group_put(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry)
+{
+ struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group;
+
+ list_del(&fib_entry->nexthop_group_node);
+ if (!list_empty(&nh_grp->fib_list))
+ return;
+
+ if (nh_grp->type == MLXSW_SP_NEXTHOP_GROUP_TYPE_OBJ) {
+ mlxsw_sp_nexthop_obj_group_destroy(mlxsw_sp, nh_grp);
+ return;
+ }
+
+ mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, nh_grp);
+}
+
+static int
+mlxsw_sp_nexthop6_group_update(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_nexthop_group *old_nh_grp = fib6_entry->common.nh_group;
+ struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node;
+ int err;
+
+ mlxsw_sp_nexthop_group_vr_unlink(old_nh_grp, fib_node->fib);
+ fib6_entry->common.nh_group = NULL;
+ list_del(&fib6_entry->common.nexthop_group_node);
+
+ err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry);
+ if (err)
+ goto err_nexthop6_group_get;
+
+ err = mlxsw_sp_nexthop_group_vr_link(fib6_entry->common.nh_group,
+ fib_node->fib);
+ if (err)
+ goto err_nexthop_group_vr_link;
+
+ /* In case this entry is offloaded, then the adjacency index
+ * currently associated with it in the device's table is that
+ * of the old group. Start using the new one instead.
+ */
+ err = mlxsw_sp_fib_entry_update(mlxsw_sp, &fib6_entry->common);
+ if (err)
+ goto err_fib_entry_update;
+
+ if (list_empty(&old_nh_grp->fib_list))
+ mlxsw_sp_nexthop6_group_destroy(mlxsw_sp, old_nh_grp);
+
+ return 0;
+
+err_fib_entry_update:
+ mlxsw_sp_nexthop_group_vr_unlink(fib6_entry->common.nh_group,
+ fib_node->fib);
+err_nexthop_group_vr_link:
+ mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common);
+err_nexthop6_group_get:
+ list_add_tail(&fib6_entry->common.nexthop_group_node,
+ &old_nh_grp->fib_list);
+ fib6_entry->common.nh_group = old_nh_grp;
+ mlxsw_sp_nexthop_group_vr_link(old_nh_grp, fib_node->fib);
+ return err;
+}
+
+static int
+mlxsw_sp_fib6_entry_nexthop_add(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry,
+ struct fib6_info **rt_arr, unsigned int nrt6)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+ int err, i;
+
+ for (i = 0; i < nrt6; i++) {
+ mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]);
+ if (IS_ERR(mlxsw_sp_rt6)) {
+ err = PTR_ERR(mlxsw_sp_rt6);
+ goto err_rt6_unwind;
+ }
+
+ list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list);
+ fib6_entry->nrt6++;
+ }
+
+ err = mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry);
+ if (err)
+ goto err_rt6_unwind;
+
+ return 0;
+
+err_rt6_unwind:
+ for (; i > 0; i--) {
+ fib6_entry->nrt6--;
+ mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list,
+ struct mlxsw_sp_rt6, list);
+ list_del(&mlxsw_sp_rt6->list);
+ mlxsw_sp_rt6_destroy(mlxsw_sp_rt6);
+ }
+ return err;
+}
+
+static void
+mlxsw_sp_fib6_entry_nexthop_del(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry,
+ struct fib6_info **rt_arr, unsigned int nrt6)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+ int i;
+
+ for (i = 0; i < nrt6; i++) {
+ mlxsw_sp_rt6 = mlxsw_sp_fib6_entry_rt_find(fib6_entry,
+ rt_arr[i]);
+ if (WARN_ON_ONCE(!mlxsw_sp_rt6))
+ continue;
+
+ fib6_entry->nrt6--;
+ list_del(&mlxsw_sp_rt6->list);
+ mlxsw_sp_rt6_destroy(mlxsw_sp_rt6);
+ }
+
+ mlxsw_sp_nexthop6_group_update(mlxsw_sp, fib6_entry);
+}
+
+static int
+mlxsw_sp_fib6_entry_type_set_local(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ const struct fib6_info *rt)
+{
+ struct mlxsw_sp_nexthop_group_info *nhgi = fib_entry->nh_group->nhgi;
+ union mlxsw_sp_l3addr dip = { .addr6 = rt->fib6_dst.addr };
+ u32 tb_id = mlxsw_sp_fix_tb_id(rt->fib6_table->tb6_id);
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ int ifindex = nhgi->nexthops[0].ifindex;
+ struct mlxsw_sp_ipip_entry *ipip_entry;
+
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ ipip_entry = mlxsw_sp_ipip_entry_find_by_decap(mlxsw_sp, ifindex,
+ MLXSW_SP_L3_PROTO_IPV6,
+ dip);
+
+ if (ipip_entry && ipip_entry->ol_dev->flags & IFF_UP) {
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_IPIP_DECAP;
+ return mlxsw_sp_fib_entry_decap_init(mlxsw_sp, fib_entry,
+ ipip_entry);
+ }
+ if (mlxsw_sp_router_nve_is_decap(mlxsw_sp, tb_id,
+ MLXSW_SP_L3_PROTO_IPV6, &dip)) {
+ u32 tunnel_index;
+
+ tunnel_index = router->nve_decap_config.tunnel_index;
+ fib_entry->decap.tunnel_index = tunnel_index;
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_NVE_DECAP;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_fib6_entry_type_set(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_entry *fib_entry,
+ const struct fib6_info *rt)
+{
+ if (rt->fib6_flags & RTF_LOCAL)
+ return mlxsw_sp_fib6_entry_type_set_local(mlxsw_sp, fib_entry,
+ rt);
+ if (rt->fib6_flags & RTF_ANYCAST)
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP;
+ else if (rt->fib6_type == RTN_BLACKHOLE)
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_BLACKHOLE;
+ else if (rt->fib6_flags & RTF_REJECT)
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_UNREACHABLE;
+ else if (fib_entry->nh_group->nhgi->gateway)
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE;
+ else
+ fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL;
+
+ return 0;
+}
+
+static void
+mlxsw_sp_fib6_entry_rt_destroy_all(struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6, *tmp;
+
+ list_for_each_entry_safe(mlxsw_sp_rt6, tmp, &fib6_entry->rt6_list,
+ list) {
+ fib6_entry->nrt6--;
+ list_del(&mlxsw_sp_rt6->list);
+ mlxsw_sp_rt6_destroy(mlxsw_sp_rt6);
+ }
+}
+
+static struct mlxsw_sp_fib6_entry *
+mlxsw_sp_fib6_entry_create(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node,
+ struct fib6_info **rt_arr, unsigned int nrt6)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_fib_entry *fib_entry;
+ struct mlxsw_sp_rt6 *mlxsw_sp_rt6;
+ int err, i;
+
+ fib6_entry = kzalloc(sizeof(*fib6_entry), GFP_KERNEL);
+ if (!fib6_entry)
+ return ERR_PTR(-ENOMEM);
+ fib_entry = &fib6_entry->common;
+
+ INIT_LIST_HEAD(&fib6_entry->rt6_list);
+
+ for (i = 0; i < nrt6; i++) {
+ mlxsw_sp_rt6 = mlxsw_sp_rt6_create(rt_arr[i]);
+ if (IS_ERR(mlxsw_sp_rt6)) {
+ err = PTR_ERR(mlxsw_sp_rt6);
+ goto err_rt6_unwind;
+ }
+ list_add_tail(&mlxsw_sp_rt6->list, &fib6_entry->rt6_list);
+ fib6_entry->nrt6++;
+ }
+
+ err = mlxsw_sp_nexthop6_group_get(mlxsw_sp, fib6_entry);
+ if (err)
+ goto err_rt6_unwind;
+
+ err = mlxsw_sp_nexthop_group_vr_link(fib_entry->nh_group,
+ fib_node->fib);
+ if (err)
+ goto err_nexthop_group_vr_link;
+
+ err = mlxsw_sp_fib6_entry_type_set(mlxsw_sp, fib_entry, rt_arr[0]);
+ if (err)
+ goto err_fib6_entry_type_set;
+
+ fib_entry->fib_node = fib_node;
+
+ return fib6_entry;
+
+err_fib6_entry_type_set:
+ mlxsw_sp_nexthop_group_vr_unlink(fib_entry->nh_group, fib_node->fib);
+err_nexthop_group_vr_link:
+ mlxsw_sp_nexthop6_group_put(mlxsw_sp, fib_entry);
+err_rt6_unwind:
+ for (; i > 0; i--) {
+ fib6_entry->nrt6--;
+ mlxsw_sp_rt6 = list_last_entry(&fib6_entry->rt6_list,
+ struct mlxsw_sp_rt6, list);
+ list_del(&mlxsw_sp_rt6->list);
+ mlxsw_sp_rt6_destroy(mlxsw_sp_rt6);
+ }
+ kfree(fib6_entry);
+ return ERR_PTR(err);
+}
+
+static void
+mlxsw_sp_fib6_entry_type_unset(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ mlxsw_sp_fib_entry_type_unset(mlxsw_sp, &fib6_entry->common);
+}
+
+static void mlxsw_sp_fib6_entry_destroy(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node;
+
+ mlxsw_sp_fib6_entry_type_unset(mlxsw_sp, fib6_entry);
+ mlxsw_sp_nexthop_group_vr_unlink(fib6_entry->common.nh_group,
+ fib_node->fib);
+ mlxsw_sp_nexthop6_group_put(mlxsw_sp, &fib6_entry->common);
+ mlxsw_sp_fib6_entry_rt_destroy_all(fib6_entry);
+ WARN_ON(fib6_entry->nrt6);
+ kfree(fib6_entry);
+}
+
+static struct mlxsw_sp_fib6_entry *
+mlxsw_sp_fib6_entry_lookup(struct mlxsw_sp *mlxsw_sp,
+ const struct fib6_info *rt)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_fib_node *fib_node;
+ struct mlxsw_sp_fib *fib;
+ struct fib6_info *cmp_rt;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_find(mlxsw_sp, rt->fib6_table->tb6_id);
+ if (!vr)
+ return NULL;
+ fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV6);
+
+ fib_node = mlxsw_sp_fib_node_lookup(fib, &rt->fib6_dst.addr,
+ sizeof(rt->fib6_dst.addr),
+ rt->fib6_dst.plen);
+ if (!fib_node)
+ return NULL;
+
+ fib6_entry = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib6_entry, common);
+ cmp_rt = mlxsw_sp_fib6_entry_rt(fib6_entry);
+ if (rt->fib6_table->tb6_id == cmp_rt->fib6_table->tb6_id &&
+ rt->fib6_metric == cmp_rt->fib6_metric &&
+ mlxsw_sp_fib6_entry_rt_find(fib6_entry, rt))
+ return fib6_entry;
+
+ return NULL;
+}
+
+static bool mlxsw_sp_fib6_allow_replace(struct mlxsw_sp_fib6_entry *fib6_entry)
+{
+ struct mlxsw_sp_fib_node *fib_node = fib6_entry->common.fib_node;
+ struct mlxsw_sp_fib6_entry *fib6_replaced;
+ struct fib6_info *rt, *rt_replaced;
+
+ if (!fib_node->fib_entry)
+ return true;
+
+ fib6_replaced = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib6_entry,
+ common);
+ rt = mlxsw_sp_fib6_entry_rt(fib6_entry);
+ rt_replaced = mlxsw_sp_fib6_entry_rt(fib6_replaced);
+ if (rt->fib6_table->tb6_id == RT_TABLE_MAIN &&
+ rt_replaced->fib6_table->tb6_id == RT_TABLE_LOCAL)
+ return false;
+
+ return true;
+}
+
+static int mlxsw_sp_router_fib6_replace(struct mlxsw_sp *mlxsw_sp,
+ struct fib6_info **rt_arr,
+ unsigned int nrt6)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry, *fib6_replaced;
+ struct mlxsw_sp_fib_entry *replaced;
+ struct mlxsw_sp_fib_node *fib_node;
+ struct fib6_info *rt = rt_arr[0];
+ int err;
+
+ if (rt->fib6_src.plen)
+ return -EINVAL;
+
+ if (mlxsw_sp_fib6_rt_should_ignore(rt))
+ return 0;
+
+ if (rt->nh && !mlxsw_sp_nexthop_obj_group_lookup(mlxsw_sp, rt->nh->id))
+ return 0;
+
+ fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->fib6_table->tb6_id,
+ &rt->fib6_dst.addr,
+ sizeof(rt->fib6_dst.addr),
+ rt->fib6_dst.plen,
+ MLXSW_SP_L3_PROTO_IPV6);
+ if (IS_ERR(fib_node))
+ return PTR_ERR(fib_node);
+
+ fib6_entry = mlxsw_sp_fib6_entry_create(mlxsw_sp, fib_node, rt_arr,
+ nrt6);
+ if (IS_ERR(fib6_entry)) {
+ err = PTR_ERR(fib6_entry);
+ goto err_fib6_entry_create;
+ }
+
+ if (!mlxsw_sp_fib6_allow_replace(fib6_entry)) {
+ mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return 0;
+ }
+
+ replaced = fib_node->fib_entry;
+ err = mlxsw_sp_fib_node_entry_link(mlxsw_sp, &fib6_entry->common);
+ if (err)
+ goto err_fib_node_entry_link;
+
+ /* Nothing to replace */
+ if (!replaced)
+ return 0;
+
+ mlxsw_sp_fib_entry_hw_flags_clear(mlxsw_sp, replaced);
+ fib6_replaced = container_of(replaced, struct mlxsw_sp_fib6_entry,
+ common);
+ mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_replaced);
+
+ return 0;
+
+err_fib_node_entry_link:
+ fib_node->fib_entry = replaced;
+ mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry);
+err_fib6_entry_create:
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return err;
+}
+
+static int mlxsw_sp_router_fib6_append(struct mlxsw_sp *mlxsw_sp,
+ struct fib6_info **rt_arr,
+ unsigned int nrt6)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_fib_node *fib_node;
+ struct fib6_info *rt = rt_arr[0];
+ int err;
+
+ if (rt->fib6_src.plen)
+ return -EINVAL;
+
+ if (mlxsw_sp_fib6_rt_should_ignore(rt))
+ return 0;
+
+ fib_node = mlxsw_sp_fib_node_get(mlxsw_sp, rt->fib6_table->tb6_id,
+ &rt->fib6_dst.addr,
+ sizeof(rt->fib6_dst.addr),
+ rt->fib6_dst.plen,
+ MLXSW_SP_L3_PROTO_IPV6);
+ if (IS_ERR(fib_node))
+ return PTR_ERR(fib_node);
+
+ if (WARN_ON_ONCE(!fib_node->fib_entry)) {
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return -EINVAL;
+ }
+
+ fib6_entry = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib6_entry, common);
+ err = mlxsw_sp_fib6_entry_nexthop_add(mlxsw_sp, fib6_entry, rt_arr,
+ nrt6);
+ if (err)
+ goto err_fib6_entry_nexthop_add;
+
+ return 0;
+
+err_fib6_entry_nexthop_add:
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+ return err;
+}
+
+static void mlxsw_sp_router_fib6_del(struct mlxsw_sp *mlxsw_sp,
+ struct fib6_info **rt_arr,
+ unsigned int nrt6)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+ struct mlxsw_sp_fib_node *fib_node;
+ struct fib6_info *rt = rt_arr[0];
+
+ if (mlxsw_sp_fib6_rt_should_ignore(rt))
+ return;
+
+ /* Multipath routes are first added to the FIB trie and only then
+ * notified. If we vetoed the addition, we will get a delete
+ * notification for a route we do not have. Therefore, do not warn if
+ * route was not found.
+ */
+ fib6_entry = mlxsw_sp_fib6_entry_lookup(mlxsw_sp, rt);
+ if (!fib6_entry)
+ return;
+
+ /* If not all the nexthops are deleted, then only reduce the nexthop
+ * group.
+ */
+ if (nrt6 != fib6_entry->nrt6) {
+ mlxsw_sp_fib6_entry_nexthop_del(mlxsw_sp, fib6_entry, rt_arr,
+ nrt6);
+ return;
+ }
+
+ fib_node = fib6_entry->common.fib_node;
+
+ mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, &fib6_entry->common);
+ mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+}
+
+static struct mlxsw_sp_mr_table *
+mlxsw_sp_router_fibmr_family_to_table(struct mlxsw_sp_vr *vr, int family)
+{
+ if (family == RTNL_FAMILY_IPMR)
+ return vr->mr_table[MLXSW_SP_L3_PROTO_IPV4];
+ else
+ return vr->mr_table[MLXSW_SP_L3_PROTO_IPV6];
+}
+
+static int mlxsw_sp_router_fibmr_add(struct mlxsw_sp *mlxsw_sp,
+ struct mfc_entry_notifier_info *men_info,
+ bool replace)
+{
+ struct mlxsw_sp_mr_table *mrt;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_get(mlxsw_sp, men_info->tb_id, NULL);
+ if (IS_ERR(vr))
+ return PTR_ERR(vr);
+
+ mrt = mlxsw_sp_router_fibmr_family_to_table(vr, men_info->info.family);
+ return mlxsw_sp_mr_route_add(mrt, men_info->mfc, replace);
+}
+
+static void mlxsw_sp_router_fibmr_del(struct mlxsw_sp *mlxsw_sp,
+ struct mfc_entry_notifier_info *men_info)
+{
+ struct mlxsw_sp_mr_table *mrt;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_find(mlxsw_sp, men_info->tb_id);
+ if (WARN_ON(!vr))
+ return;
+
+ mrt = mlxsw_sp_router_fibmr_family_to_table(vr, men_info->info.family);
+ mlxsw_sp_mr_route_del(mrt, men_info->mfc);
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+}
+
+static int
+mlxsw_sp_router_fibmr_vif_add(struct mlxsw_sp *mlxsw_sp,
+ struct vif_entry_notifier_info *ven_info)
+{
+ struct mlxsw_sp_mr_table *mrt;
+ struct mlxsw_sp_rif *rif;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_get(mlxsw_sp, ven_info->tb_id, NULL);
+ if (IS_ERR(vr))
+ return PTR_ERR(vr);
+
+ mrt = mlxsw_sp_router_fibmr_family_to_table(vr, ven_info->info.family);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, ven_info->dev);
+ return mlxsw_sp_mr_vif_add(mrt, ven_info->dev,
+ ven_info->vif_index,
+ ven_info->vif_flags, rif);
+}
+
+static void
+mlxsw_sp_router_fibmr_vif_del(struct mlxsw_sp *mlxsw_sp,
+ struct vif_entry_notifier_info *ven_info)
+{
+ struct mlxsw_sp_mr_table *mrt;
+ struct mlxsw_sp_vr *vr;
+
+ vr = mlxsw_sp_vr_find(mlxsw_sp, ven_info->tb_id);
+ if (WARN_ON(!vr))
+ return;
+
+ mrt = mlxsw_sp_router_fibmr_family_to_table(vr, ven_info->info.family);
+ mlxsw_sp_mr_vif_del(mrt, ven_info->vif_index);
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+}
+
+static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_fib4_entry *fib4_entry;
+
+ fib4_entry = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib4_entry, common);
+ mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, fib_node->fib_entry);
+ mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib4_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+}
+
+static void mlxsw_sp_fib6_node_flush(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ struct mlxsw_sp_fib6_entry *fib6_entry;
+
+ fib6_entry = container_of(fib_node->fib_entry,
+ struct mlxsw_sp_fib6_entry, common);
+ mlxsw_sp_fib_node_entry_unlink(mlxsw_sp, fib_node->fib_entry);
+ mlxsw_sp_fib6_entry_destroy(mlxsw_sp, fib6_entry);
+ mlxsw_sp_fib_node_put(mlxsw_sp, fib_node);
+}
+
+static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_fib_node *fib_node)
+{
+ switch (fib_node->fib->proto) {
+ case MLXSW_SP_L3_PROTO_IPV4:
+ mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node);
+ break;
+ case MLXSW_SP_L3_PROTO_IPV6:
+ mlxsw_sp_fib6_node_flush(mlxsw_sp, fib_node);
+ break;
+ }
+}
+
+static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_vr *vr,
+ enum mlxsw_sp_l3proto proto)
+{
+ struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto);
+ struct mlxsw_sp_fib_node *fib_node, *tmp;
+
+ list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) {
+ bool do_break = &tmp->list == &fib->node_list;
+
+ mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node);
+ if (do_break)
+ break;
+ }
+}
+
+static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp)
+{
+ int i, j;
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) {
+ struct mlxsw_sp_vr *vr = &mlxsw_sp->router->vrs[i];
+
+ if (!mlxsw_sp_vr_is_used(vr))
+ continue;
+
+ for (j = 0; j < MLXSW_SP_L3_PROTO_MAX; j++)
+ mlxsw_sp_mr_table_flush(vr->mr_table[j]);
+ mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4);
+
+ /* If virtual router was only used for IPv4, then it's no
+ * longer used.
+ */
+ if (!mlxsw_sp_vr_is_used(vr))
+ continue;
+ mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV6);
+ }
+}
+
+struct mlxsw_sp_fib6_event_work {
+ struct fib6_info **rt_arr;
+ unsigned int nrt6;
+};
+
+struct mlxsw_sp_fib_event_work {
+ struct work_struct work;
+ union {
+ struct mlxsw_sp_fib6_event_work fib6_work;
+ struct fib_entry_notifier_info fen_info;
+ struct fib_rule_notifier_info fr_info;
+ struct fib_nh_notifier_info fnh_info;
+ struct mfc_entry_notifier_info men_info;
+ struct vif_entry_notifier_info ven_info;
+ };
+ struct mlxsw_sp *mlxsw_sp;
+ unsigned long event;
+};
+
+static int
+mlxsw_sp_router_fib6_work_init(struct mlxsw_sp_fib6_event_work *fib6_work,
+ struct fib6_entry_notifier_info *fen6_info)
+{
+ struct fib6_info *rt = fen6_info->rt;
+ struct fib6_info **rt_arr;
+ struct fib6_info *iter;
+ unsigned int nrt6;
+ int i = 0;
+
+ nrt6 = fen6_info->nsiblings + 1;
+
+ rt_arr = kcalloc(nrt6, sizeof(struct fib6_info *), GFP_ATOMIC);
+ if (!rt_arr)
+ return -ENOMEM;
+
+ fib6_work->rt_arr = rt_arr;
+ fib6_work->nrt6 = nrt6;
+
+ rt_arr[0] = rt;
+ fib6_info_hold(rt);
+
+ if (!fen6_info->nsiblings)
+ return 0;
+
+ list_for_each_entry(iter, &rt->fib6_siblings, fib6_siblings) {
+ if (i == fen6_info->nsiblings)
+ break;
+
+ rt_arr[i + 1] = iter;
+ fib6_info_hold(iter);
+ i++;
+ }
+ WARN_ON_ONCE(i != fen6_info->nsiblings);
+
+ return 0;
+}
+
+static void
+mlxsw_sp_router_fib6_work_fini(struct mlxsw_sp_fib6_event_work *fib6_work)
+{
+ int i;
+
+ for (i = 0; i < fib6_work->nrt6; i++)
+ mlxsw_sp_rt6_release(fib6_work->rt_arr[i]);
+ kfree(fib6_work->rt_arr);
+}
+
+static void mlxsw_sp_router_fib4_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_fib_event_work *fib_work =
+ container_of(work, struct mlxsw_sp_fib_event_work, work);
+ struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
+ int err;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ mlxsw_sp_span_respin(mlxsw_sp);
+
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ err = mlxsw_sp_router_fib4_replace(mlxsw_sp,
+ &fib_work->fen_info);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "FIB replace failed.\n");
+ mlxsw_sp_fib4_offload_failed_flag_set(mlxsw_sp,
+ &fib_work->fen_info);
+ }
+ fib_info_put(fib_work->fen_info.fi);
+ break;
+ case FIB_EVENT_ENTRY_DEL:
+ mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info);
+ fib_info_put(fib_work->fen_info.fi);
+ break;
+ case FIB_EVENT_NH_ADD:
+ case FIB_EVENT_NH_DEL:
+ mlxsw_sp_nexthop4_event(mlxsw_sp, fib_work->event,
+ fib_work->fnh_info.fib_nh);
+ fib_info_put(fib_work->fnh_info.fib_nh->nh_parent);
+ break;
+ }
+ mutex_unlock(&mlxsw_sp->router->lock);
+ kfree(fib_work);
+}
+
+static void mlxsw_sp_router_fib6_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_fib_event_work *fib_work =
+ container_of(work, struct mlxsw_sp_fib_event_work, work);
+ struct mlxsw_sp_fib6_event_work *fib6_work = &fib_work->fib6_work;
+ struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
+ int err;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ mlxsw_sp_span_respin(mlxsw_sp);
+
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ err = mlxsw_sp_router_fib6_replace(mlxsw_sp,
+ fib6_work->rt_arr,
+ fib6_work->nrt6);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "FIB replace failed.\n");
+ mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp,
+ fib6_work->rt_arr,
+ fib6_work->nrt6);
+ }
+ mlxsw_sp_router_fib6_work_fini(fib6_work);
+ break;
+ case FIB_EVENT_ENTRY_APPEND:
+ err = mlxsw_sp_router_fib6_append(mlxsw_sp,
+ fib6_work->rt_arr,
+ fib6_work->nrt6);
+ if (err) {
+ dev_warn(mlxsw_sp->bus_info->dev, "FIB append failed.\n");
+ mlxsw_sp_fib6_offload_failed_flag_set(mlxsw_sp,
+ fib6_work->rt_arr,
+ fib6_work->nrt6);
+ }
+ mlxsw_sp_router_fib6_work_fini(fib6_work);
+ break;
+ case FIB_EVENT_ENTRY_DEL:
+ mlxsw_sp_router_fib6_del(mlxsw_sp,
+ fib6_work->rt_arr,
+ fib6_work->nrt6);
+ mlxsw_sp_router_fib6_work_fini(fib6_work);
+ break;
+ }
+ mutex_unlock(&mlxsw_sp->router->lock);
+ kfree(fib_work);
+}
+
+static void mlxsw_sp_router_fibmr_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_fib_event_work *fib_work =
+ container_of(work, struct mlxsw_sp_fib_event_work, work);
+ struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp;
+ bool replace;
+ int err;
+
+ rtnl_lock();
+ mutex_lock(&mlxsw_sp->router->lock);
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ case FIB_EVENT_ENTRY_ADD:
+ replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE;
+
+ err = mlxsw_sp_router_fibmr_add(mlxsw_sp, &fib_work->men_info,
+ replace);
+ if (err)
+ dev_warn(mlxsw_sp->bus_info->dev, "MR entry add failed.\n");
+ mr_cache_put(fib_work->men_info.mfc);
+ break;
+ case FIB_EVENT_ENTRY_DEL:
+ mlxsw_sp_router_fibmr_del(mlxsw_sp, &fib_work->men_info);
+ mr_cache_put(fib_work->men_info.mfc);
+ break;
+ case FIB_EVENT_VIF_ADD:
+ err = mlxsw_sp_router_fibmr_vif_add(mlxsw_sp,
+ &fib_work->ven_info);
+ if (err)
+ dev_warn(mlxsw_sp->bus_info->dev, "MR VIF add failed.\n");
+ dev_put(fib_work->ven_info.dev);
+ break;
+ case FIB_EVENT_VIF_DEL:
+ mlxsw_sp_router_fibmr_vif_del(mlxsw_sp,
+ &fib_work->ven_info);
+ dev_put(fib_work->ven_info.dev);
+ break;
+ }
+ mutex_unlock(&mlxsw_sp->router->lock);
+ rtnl_unlock();
+ kfree(fib_work);
+}
+
+static void mlxsw_sp_router_fib4_event(struct mlxsw_sp_fib_event_work *fib_work,
+ struct fib_notifier_info *info)
+{
+ struct fib_entry_notifier_info *fen_info;
+ struct fib_nh_notifier_info *fnh_info;
+
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ case FIB_EVENT_ENTRY_DEL:
+ fen_info = container_of(info, struct fib_entry_notifier_info,
+ info);
+ fib_work->fen_info = *fen_info;
+ /* Take reference on fib_info to prevent it from being
+ * freed while work is queued. Release it afterwards.
+ */
+ fib_info_hold(fib_work->fen_info.fi);
+ break;
+ case FIB_EVENT_NH_ADD:
+ case FIB_EVENT_NH_DEL:
+ fnh_info = container_of(info, struct fib_nh_notifier_info,
+ info);
+ fib_work->fnh_info = *fnh_info;
+ fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent);
+ break;
+ }
+}
+
+static int mlxsw_sp_router_fib6_event(struct mlxsw_sp_fib_event_work *fib_work,
+ struct fib_notifier_info *info)
+{
+ struct fib6_entry_notifier_info *fen6_info;
+ int err;
+
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ case FIB_EVENT_ENTRY_APPEND:
+ case FIB_EVENT_ENTRY_DEL:
+ fen6_info = container_of(info, struct fib6_entry_notifier_info,
+ info);
+ err = mlxsw_sp_router_fib6_work_init(&fib_work->fib6_work,
+ fen6_info);
+ if (err)
+ return err;
+ break;
+ }
+
+ return 0;
+}
+
+static void
+mlxsw_sp_router_fibmr_event(struct mlxsw_sp_fib_event_work *fib_work,
+ struct fib_notifier_info *info)
+{
+ switch (fib_work->event) {
+ case FIB_EVENT_ENTRY_REPLACE:
+ case FIB_EVENT_ENTRY_ADD:
+ case FIB_EVENT_ENTRY_DEL:
+ memcpy(&fib_work->men_info, info, sizeof(fib_work->men_info));
+ mr_cache_hold(fib_work->men_info.mfc);
+ break;
+ case FIB_EVENT_VIF_ADD:
+ case FIB_EVENT_VIF_DEL:
+ memcpy(&fib_work->ven_info, info, sizeof(fib_work->ven_info));
+ dev_hold(fib_work->ven_info.dev);
+ break;
+ }
+}
+
+static int mlxsw_sp_router_fib_rule_event(unsigned long event,
+ struct fib_notifier_info *info,
+ struct mlxsw_sp *mlxsw_sp)
+{
+ struct netlink_ext_ack *extack = info->extack;
+ struct fib_rule_notifier_info *fr_info;
+ struct fib_rule *rule;
+ int err = 0;
+
+ /* nothing to do at the moment */
+ if (event == FIB_EVENT_RULE_DEL)
+ return 0;
+
+ fr_info = container_of(info, struct fib_rule_notifier_info, info);
+ rule = fr_info->rule;
+
+ /* Rule only affects locally generated traffic */
+ if (rule->iifindex == mlxsw_sp_net(mlxsw_sp)->loopback_dev->ifindex)
+ return 0;
+
+ switch (info->family) {
+ case AF_INET:
+ if (!fib4_rule_default(rule) && !rule->l3mdev)
+ err = -EOPNOTSUPP;
+ break;
+ case AF_INET6:
+ if (!fib6_rule_default(rule) && !rule->l3mdev)
+ err = -EOPNOTSUPP;
+ break;
+ case RTNL_FAMILY_IPMR:
+ if (!ipmr_rule_default(rule) && !rule->l3mdev)
+ err = -EOPNOTSUPP;
+ break;
+ case RTNL_FAMILY_IP6MR:
+ if (!ip6mr_rule_default(rule) && !rule->l3mdev)
+ err = -EOPNOTSUPP;
+ break;
+ }
+
+ if (err < 0)
+ NL_SET_ERR_MSG_MOD(extack, "FIB rules not supported");
+
+ return err;
+}
+
+/* Called with rcu_read_lock() */
+static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct mlxsw_sp_fib_event_work *fib_work;
+ struct fib_notifier_info *info = ptr;
+ struct mlxsw_sp_router *router;
+ int err;
+
+ if ((info->family != AF_INET && info->family != AF_INET6 &&
+ info->family != RTNL_FAMILY_IPMR &&
+ info->family != RTNL_FAMILY_IP6MR))
+ return NOTIFY_DONE;
+
+ router = container_of(nb, struct mlxsw_sp_router, fib_nb);
+
+ switch (event) {
+ case FIB_EVENT_RULE_ADD:
+ case FIB_EVENT_RULE_DEL:
+ err = mlxsw_sp_router_fib_rule_event(event, info,
+ router->mlxsw_sp);
+ return notifier_from_errno(err);
+ case FIB_EVENT_ENTRY_ADD:
+ case FIB_EVENT_ENTRY_REPLACE:
+ case FIB_EVENT_ENTRY_APPEND:
+ if (info->family == AF_INET) {
+ struct fib_entry_notifier_info *fen_info = ptr;
+
+ if (fen_info->fi->fib_nh_is_v6) {
+ NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported");
+ return notifier_from_errno(-EINVAL);
+ }
+ }
+ break;
+ }
+
+ fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC);
+ if (!fib_work)
+ return NOTIFY_BAD;
+
+ fib_work->mlxsw_sp = router->mlxsw_sp;
+ fib_work->event = event;
+
+ switch (info->family) {
+ case AF_INET:
+ INIT_WORK(&fib_work->work, mlxsw_sp_router_fib4_event_work);
+ mlxsw_sp_router_fib4_event(fib_work, info);
+ break;
+ case AF_INET6:
+ INIT_WORK(&fib_work->work, mlxsw_sp_router_fib6_event_work);
+ err = mlxsw_sp_router_fib6_event(fib_work, info);
+ if (err)
+ goto err_fib_event;
+ break;
+ case RTNL_FAMILY_IP6MR:
+ case RTNL_FAMILY_IPMR:
+ INIT_WORK(&fib_work->work, mlxsw_sp_router_fibmr_event_work);
+ mlxsw_sp_router_fibmr_event(fib_work, info);
+ break;
+ }
+
+ mlxsw_core_schedule_work(&fib_work->work);
+
+ return NOTIFY_DONE;
+
+err_fib_event:
+ kfree(fib_work);
+ return NOTIFY_BAD;
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
+ if (mlxsw_sp->router->rifs[i] &&
+ mlxsw_sp->router->rifs[i]->dev == dev)
+ return mlxsw_sp->router->rifs[i];
+
+ return NULL;
+}
+
+bool mlxsw_sp_rif_exists(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev)
+{
+ struct mlxsw_sp_rif *rif;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ mutex_unlock(&mlxsw_sp->router->lock);
+
+ return rif;
+}
+
+u16 mlxsw_sp_rif_vid(struct mlxsw_sp *mlxsw_sp, const struct net_device *dev)
+{
+ struct mlxsw_sp_rif *rif;
+ u16 vid = 0;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!rif)
+ goto out;
+
+ /* We only return the VID for VLAN RIFs. Otherwise we return an
+ * invalid value (0).
+ */
+ if (rif->ops->type != MLXSW_SP_RIF_TYPE_VLAN)
+ goto out;
+
+ vid = mlxsw_sp_fid_8021q_vid(rif->fid);
+
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return vid;
+}
+
+static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif)
+{
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ int err;
+
+ mlxsw_reg_ritr_rif_pack(ritr_pl, rif);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+ if (err)
+ return err;
+
+ mlxsw_reg_ritr_enable_set(ritr_pl, false);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif)
+{
+ mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index);
+ mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif);
+ mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif);
+}
+
+static bool
+mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, struct net_device *dev,
+ unsigned long event)
+{
+ struct inet6_dev *inet6_dev;
+ bool addr_list_empty = true;
+ struct in_device *idev;
+
+ switch (event) {
+ case NETDEV_UP:
+ return rif == NULL;
+ case NETDEV_DOWN:
+ rcu_read_lock();
+ idev = __in_dev_get_rcu(dev);
+ if (idev && idev->ifa_list)
+ addr_list_empty = false;
+
+ inet6_dev = __in6_dev_get(dev);
+ if (addr_list_empty && inet6_dev &&
+ !list_empty(&inet6_dev->addr_list))
+ addr_list_empty = false;
+ rcu_read_unlock();
+
+ /* macvlans do not have a RIF, but rather piggy back on the
+ * RIF of their lower device.
+ */
+ if (netif_is_macvlan(dev) && addr_list_empty)
+ return true;
+
+ if (rif && addr_list_empty &&
+ !netif_is_l3_slave(rif->dev))
+ return true;
+ /* It is possible we already removed the RIF ourselves
+ * if it was assigned to a netdev that is now a bridge
+ * or LAG slave.
+ */
+ return false;
+ }
+
+ return false;
+}
+
+static enum mlxsw_sp_rif_type
+mlxsw_sp_dev_rif_type(const struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *dev)
+{
+ enum mlxsw_sp_fid_type type;
+
+ if (mlxsw_sp_netdev_ipip_type(mlxsw_sp, dev, NULL))
+ return MLXSW_SP_RIF_TYPE_IPIP_LB;
+
+ /* Otherwise RIF type is derived from the type of the underlying FID. */
+ if (is_vlan_dev(dev) && netif_is_bridge_master(vlan_dev_real_dev(dev)))
+ type = MLXSW_SP_FID_TYPE_8021Q;
+ else if (netif_is_bridge_master(dev) && br_vlan_enabled(dev))
+ type = MLXSW_SP_FID_TYPE_8021Q;
+ else if (netif_is_bridge_master(dev))
+ type = MLXSW_SP_FID_TYPE_8021D;
+ else
+ type = MLXSW_SP_FID_TYPE_RFID;
+
+ return mlxsw_sp_fid_type_rif_type(mlxsw_sp, type);
+}
+
+static int mlxsw_sp_rif_index_alloc(struct mlxsw_sp *mlxsw_sp, u16 *p_rif_index)
+{
+ int i;
+
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) {
+ if (!mlxsw_sp->router->rifs[i]) {
+ *p_rif_index = i;
+ return 0;
+ }
+ }
+
+ return -ENOBUFS;
+}
+
+static struct mlxsw_sp_rif *mlxsw_sp_rif_alloc(size_t rif_size, u16 rif_index,
+ u16 vr_id,
+ struct net_device *l3_dev)
+{
+ struct mlxsw_sp_rif *rif;
+
+ rif = kzalloc(rif_size, GFP_KERNEL);
+ if (!rif)
+ return NULL;
+
+ INIT_LIST_HEAD(&rif->nexthop_list);
+ INIT_LIST_HEAD(&rif->neigh_list);
+ if (l3_dev) {
+ ether_addr_copy(rif->addr, l3_dev->dev_addr);
+ rif->mtu = l3_dev->mtu;
+ rif->dev = l3_dev;
+ }
+ rif->vr_id = vr_id;
+ rif->rif_index = rif_index;
+
+ return rif;
+}
+
+struct mlxsw_sp_rif *mlxsw_sp_rif_by_index(const struct mlxsw_sp *mlxsw_sp,
+ u16 rif_index)
+{
+ return mlxsw_sp->router->rifs[rif_index];
+}
+
+u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif)
+{
+ return rif->rif_index;
+}
+
+u16 mlxsw_sp_ipip_lb_rif_index(const struct mlxsw_sp_rif_ipip_lb *lb_rif)
+{
+ return lb_rif->common.rif_index;
+}
+
+u16 mlxsw_sp_ipip_lb_ul_vr_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif)
+{
+ u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(lb_rif->common.dev);
+ struct mlxsw_sp_vr *ul_vr;
+
+ ul_vr = mlxsw_sp_vr_get(lb_rif->common.mlxsw_sp, ul_tb_id, NULL);
+ if (WARN_ON(IS_ERR(ul_vr)))
+ return 0;
+
+ return ul_vr->id;
+}
+
+u16 mlxsw_sp_ipip_lb_ul_rif_id(const struct mlxsw_sp_rif_ipip_lb *lb_rif)
+{
+ return lb_rif->ul_rif_id;
+}
+
+static bool
+mlxsw_sp_router_port_l3_stats_enabled(struct mlxsw_sp_rif *rif)
+{
+ return mlxsw_sp_rif_counter_valid_get(rif,
+ MLXSW_SP_RIF_COUNTER_EGRESS) &&
+ mlxsw_sp_rif_counter_valid_get(rif,
+ MLXSW_SP_RIF_COUNTER_INGRESS);
+}
+
+static int
+mlxsw_sp_router_port_l3_stats_enable(struct mlxsw_sp_rif *rif)
+{
+ int err;
+
+ err = mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_INGRESS);
+ if (err)
+ return err;
+
+ /* Clear stale data. */
+ err = mlxsw_sp_rif_counter_fetch_clear(rif,
+ MLXSW_SP_RIF_COUNTER_INGRESS,
+ NULL);
+ if (err)
+ goto err_clear_ingress;
+
+ err = mlxsw_sp_rif_counter_alloc(rif, MLXSW_SP_RIF_COUNTER_EGRESS);
+ if (err)
+ goto err_alloc_egress;
+
+ /* Clear stale data. */
+ err = mlxsw_sp_rif_counter_fetch_clear(rif,
+ MLXSW_SP_RIF_COUNTER_EGRESS,
+ NULL);
+ if (err)
+ goto err_clear_egress;
+
+ return 0;
+
+err_clear_egress:
+ mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS);
+err_alloc_egress:
+err_clear_ingress:
+ mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_INGRESS);
+ return err;
+}
+
+static void
+mlxsw_sp_router_port_l3_stats_disable(struct mlxsw_sp_rif *rif)
+{
+ mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_EGRESS);
+ mlxsw_sp_rif_counter_free(rif, MLXSW_SP_RIF_COUNTER_INGRESS);
+}
+
+static void
+mlxsw_sp_router_port_l3_stats_report_used(struct mlxsw_sp_rif *rif,
+ struct netdev_notifier_offload_xstats_info *info)
+{
+ if (!mlxsw_sp_router_port_l3_stats_enabled(rif))
+ return;
+ netdev_offload_xstats_report_used(info->report_used);
+}
+
+static int
+mlxsw_sp_router_port_l3_stats_fetch(struct mlxsw_sp_rif *rif,
+ struct rtnl_hw_stats64 *p_stats)
+{
+ struct mlxsw_sp_rif_counter_set_basic ingress;
+ struct mlxsw_sp_rif_counter_set_basic egress;
+ int err;
+
+ err = mlxsw_sp_rif_counter_fetch_clear(rif,
+ MLXSW_SP_RIF_COUNTER_INGRESS,
+ &ingress);
+ if (err)
+ return err;
+
+ err = mlxsw_sp_rif_counter_fetch_clear(rif,
+ MLXSW_SP_RIF_COUNTER_EGRESS,
+ &egress);
+ if (err)
+ return err;
+
+#define MLXSW_SP_ROUTER_ALL_GOOD(SET, SFX) \
+ ((SET.good_unicast_ ## SFX) + \
+ (SET.good_multicast_ ## SFX) + \
+ (SET.good_broadcast_ ## SFX))
+
+ p_stats->rx_packets = MLXSW_SP_ROUTER_ALL_GOOD(ingress, packets);
+ p_stats->tx_packets = MLXSW_SP_ROUTER_ALL_GOOD(egress, packets);
+ p_stats->rx_bytes = MLXSW_SP_ROUTER_ALL_GOOD(ingress, bytes);
+ p_stats->tx_bytes = MLXSW_SP_ROUTER_ALL_GOOD(egress, bytes);
+ p_stats->rx_errors = ingress.error_packets;
+ p_stats->tx_errors = egress.error_packets;
+ p_stats->rx_dropped = ingress.discard_packets;
+ p_stats->tx_dropped = egress.discard_packets;
+ p_stats->multicast = ingress.good_multicast_packets +
+ ingress.good_broadcast_packets;
+
+#undef MLXSW_SP_ROUTER_ALL_GOOD
+
+ return 0;
+}
+
+static int
+mlxsw_sp_router_port_l3_stats_report_delta(struct mlxsw_sp_rif *rif,
+ struct netdev_notifier_offload_xstats_info *info)
+{
+ struct rtnl_hw_stats64 stats = {};
+ int err;
+
+ if (!mlxsw_sp_router_port_l3_stats_enabled(rif))
+ return 0;
+
+ err = mlxsw_sp_router_port_l3_stats_fetch(rif, &stats);
+ if (err)
+ return err;
+
+ netdev_offload_xstats_report_delta(info->report_delta, &stats);
+ return 0;
+}
+
+struct mlxsw_sp_router_hwstats_notify_work {
+ struct work_struct work;
+ struct net_device *dev;
+};
+
+static void mlxsw_sp_router_hwstats_notify_work(struct work_struct *work)
+{
+ struct mlxsw_sp_router_hwstats_notify_work *hws_work =
+ container_of(work, struct mlxsw_sp_router_hwstats_notify_work,
+ work);
+
+ rtnl_lock();
+ rtnl_offload_xstats_notify(hws_work->dev);
+ rtnl_unlock();
+ dev_put(hws_work->dev);
+ kfree(hws_work);
+}
+
+static void
+mlxsw_sp_router_hwstats_notify_schedule(struct net_device *dev)
+{
+ struct mlxsw_sp_router_hwstats_notify_work *hws_work;
+
+ /* To collect notification payload, the core ends up sending another
+ * notifier block message, which would deadlock on the attempt to
+ * acquire the router lock again. Just postpone the notification until
+ * later.
+ */
+
+ hws_work = kzalloc(sizeof(*hws_work), GFP_KERNEL);
+ if (!hws_work)
+ return;
+
+ INIT_WORK(&hws_work->work, mlxsw_sp_router_hwstats_notify_work);
+ dev_hold(dev);
+ hws_work->dev = dev;
+ mlxsw_core_schedule_work(&hws_work->work);
+}
+
+int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif)
+{
+ return rif->dev->ifindex;
+}
+
+const struct net_device *mlxsw_sp_rif_dev(const struct mlxsw_sp_rif *rif)
+{
+ return rif->dev;
+}
+
+static void mlxsw_sp_rif_push_l3_stats(struct mlxsw_sp_rif *rif)
+{
+ struct rtnl_hw_stats64 stats = {};
+
+ if (!mlxsw_sp_router_port_l3_stats_fetch(rif, &stats))
+ netdev_offload_xstats_push_delta(rif->dev,
+ NETDEV_OFFLOAD_XSTATS_TYPE_L3,
+ &stats);
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_rif_params *params,
+ struct netlink_ext_ack *extack)
+{
+ u32 tb_id = l3mdev_fib_table(params->dev);
+ const struct mlxsw_sp_rif_ops *ops;
+ struct mlxsw_sp_fid *fid = NULL;
+ enum mlxsw_sp_rif_type type;
+ struct mlxsw_sp_rif *rif;
+ struct mlxsw_sp_vr *vr;
+ u16 rif_index;
+ int i, err;
+
+ type = mlxsw_sp_dev_rif_type(mlxsw_sp, params->dev);
+ ops = mlxsw_sp->router->rif_ops_arr[type];
+
+ vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN, extack);
+ if (IS_ERR(vr))
+ return ERR_CAST(vr);
+ vr->rif_count++;
+
+ err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interfaces");
+ goto err_rif_index_alloc;
+ }
+
+ rif = mlxsw_sp_rif_alloc(ops->rif_size, rif_index, vr->id, params->dev);
+ if (!rif) {
+ err = -ENOMEM;
+ goto err_rif_alloc;
+ }
+ dev_hold(rif->dev);
+ mlxsw_sp->router->rifs[rif_index] = rif;
+ rif->mlxsw_sp = mlxsw_sp;
+ rif->ops = ops;
+
+ if (ops->fid_get) {
+ fid = ops->fid_get(rif, extack);
+ if (IS_ERR(fid)) {
+ err = PTR_ERR(fid);
+ goto err_fid_get;
+ }
+ rif->fid = fid;
+ }
+
+ if (ops->setup)
+ ops->setup(rif, params);
+
+ err = ops->configure(rif, extack);
+ if (err)
+ goto err_configure;
+
+ for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++) {
+ err = mlxsw_sp_mr_rif_add(vr->mr_table[i], rif);
+ if (err)
+ goto err_mr_rif_add;
+ }
+
+ if (netdev_offload_xstats_enabled(rif->dev,
+ NETDEV_OFFLOAD_XSTATS_TYPE_L3)) {
+ err = mlxsw_sp_router_port_l3_stats_enable(rif);
+ if (err)
+ goto err_stats_enable;
+ mlxsw_sp_router_hwstats_notify_schedule(rif->dev);
+ } else {
+ mlxsw_sp_rif_counters_alloc(rif);
+ }
+
+ atomic_inc(&mlxsw_sp->router->rifs_count);
+ return rif;
+
+err_stats_enable:
+err_mr_rif_add:
+ for (i--; i >= 0; i--)
+ mlxsw_sp_mr_rif_del(vr->mr_table[i], rif);
+ ops->deconfigure(rif);
+err_configure:
+ if (fid)
+ mlxsw_sp_fid_put(fid);
+err_fid_get:
+ mlxsw_sp->router->rifs[rif_index] = NULL;
+ dev_put(rif->dev);
+ kfree(rif);
+err_rif_alloc:
+err_rif_index_alloc:
+ vr->rif_count--;
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif)
+{
+ const struct mlxsw_sp_rif_ops *ops = rif->ops;
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_fid *fid = rif->fid;
+ struct mlxsw_sp_vr *vr;
+ int i;
+
+ atomic_dec(&mlxsw_sp->router->rifs_count);
+ mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif);
+ vr = &mlxsw_sp->router->vrs[rif->vr_id];
+
+ if (netdev_offload_xstats_enabled(rif->dev,
+ NETDEV_OFFLOAD_XSTATS_TYPE_L3)) {
+ mlxsw_sp_rif_push_l3_stats(rif);
+ mlxsw_sp_router_port_l3_stats_disable(rif);
+ mlxsw_sp_router_hwstats_notify_schedule(rif->dev);
+ } else {
+ mlxsw_sp_rif_counters_free(rif);
+ }
+
+ for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++)
+ mlxsw_sp_mr_rif_del(vr->mr_table[i], rif);
+ ops->deconfigure(rif);
+ if (fid)
+ /* Loopback RIFs are not associated with a FID. */
+ mlxsw_sp_fid_put(fid);
+ mlxsw_sp->router->rifs[rif->rif_index] = NULL;
+ dev_put(rif->dev);
+ kfree(rif);
+ vr->rif_count--;
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+}
+
+void mlxsw_sp_rif_destroy_by_dev(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *dev)
+{
+ struct mlxsw_sp_rif *rif;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!rif)
+ goto out;
+ mlxsw_sp_rif_destroy(rif);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static void
+mlxsw_sp_rif_subport_params_init(struct mlxsw_sp_rif_params *params,
+ struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
+
+ params->vid = mlxsw_sp_port_vlan->vid;
+ params->lag = mlxsw_sp_port->lagged;
+ if (params->lag)
+ params->lag_id = mlxsw_sp_port->lag_id;
+ else
+ params->system_port = mlxsw_sp_port->local_port;
+}
+
+static struct mlxsw_sp_rif_subport *
+mlxsw_sp_rif_subport_rif(const struct mlxsw_sp_rif *rif)
+{
+ return container_of(rif, struct mlxsw_sp_rif_subport, common);
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_rif_subport_get(struct mlxsw_sp *mlxsw_sp,
+ const struct mlxsw_sp_rif_params *params,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_subport *rif_subport;
+ struct mlxsw_sp_rif *rif;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, params->dev);
+ if (!rif)
+ return mlxsw_sp_rif_create(mlxsw_sp, params, extack);
+
+ rif_subport = mlxsw_sp_rif_subport_rif(rif);
+ refcount_inc(&rif_subport->ref_count);
+ return rif;
+}
+
+static void mlxsw_sp_rif_subport_put(struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_rif_subport *rif_subport;
+
+ rif_subport = mlxsw_sp_rif_subport_rif(rif);
+ if (!refcount_dec_and_test(&rif_subport->ref_count))
+ return;
+
+ mlxsw_sp_rif_destroy(rif);
+}
+
+static int mlxsw_sp_rif_mac_profile_index_alloc(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif_mac_profile *profile,
+ struct netlink_ext_ack *extack)
+{
+ u8 max_rif_mac_profiles = mlxsw_sp->router->max_rif_mac_profile;
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ int id;
+
+ id = idr_alloc(&router->rif_mac_profiles_idr, profile, 0,
+ max_rif_mac_profiles, GFP_KERNEL);
+
+ if (id >= 0) {
+ profile->id = id;
+ return 0;
+ }
+
+ if (id == -ENOSPC)
+ NL_SET_ERR_MSG_MOD(extack,
+ "Exceeded number of supported router interface MAC profiles");
+
+ return id;
+}
+
+static struct mlxsw_sp_rif_mac_profile *
+mlxsw_sp_rif_mac_profile_index_free(struct mlxsw_sp *mlxsw_sp, u8 mac_profile)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = idr_remove(&mlxsw_sp->router->rif_mac_profiles_idr,
+ mac_profile);
+ WARN_ON(!profile);
+ return profile;
+}
+
+static struct mlxsw_sp_rif_mac_profile *
+mlxsw_sp_rif_mac_profile_alloc(const char *mac)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = kzalloc(sizeof(*profile), GFP_KERNEL);
+ if (!profile)
+ return NULL;
+
+ ether_addr_copy(profile->mac_prefix, mac);
+ refcount_set(&profile->ref_count, 1);
+ return profile;
+}
+
+static struct mlxsw_sp_rif_mac_profile *
+mlxsw_sp_rif_mac_profile_find(const struct mlxsw_sp *mlxsw_sp, const char *mac)
+{
+ struct mlxsw_sp_router *router = mlxsw_sp->router;
+ struct mlxsw_sp_rif_mac_profile *profile;
+ int id;
+
+ idr_for_each_entry(&router->rif_mac_profiles_idr, profile, id) {
+ if (ether_addr_equal_masked(profile->mac_prefix, mac,
+ mlxsw_sp->mac_mask))
+ return profile;
+ }
+
+ return NULL;
+}
+
+static u64 mlxsw_sp_rif_mac_profiles_occ_get(void *priv)
+{
+ const struct mlxsw_sp *mlxsw_sp = priv;
+
+ return atomic_read(&mlxsw_sp->router->rif_mac_profiles_count);
+}
+
+static u64 mlxsw_sp_rifs_occ_get(void *priv)
+{
+ const struct mlxsw_sp *mlxsw_sp = priv;
+
+ return atomic_read(&mlxsw_sp->router->rifs_count);
+}
+
+static struct mlxsw_sp_rif_mac_profile *
+mlxsw_sp_rif_mac_profile_create(struct mlxsw_sp *mlxsw_sp, const char *mac,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+ int err;
+
+ profile = mlxsw_sp_rif_mac_profile_alloc(mac);
+ if (!profile)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlxsw_sp_rif_mac_profile_index_alloc(mlxsw_sp, profile, extack);
+ if (err)
+ goto profile_index_alloc_err;
+
+ atomic_inc(&mlxsw_sp->router->rif_mac_profiles_count);
+ return profile;
+
+profile_index_alloc_err:
+ kfree(profile);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_rif_mac_profile_destroy(struct mlxsw_sp *mlxsw_sp,
+ u8 mac_profile)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ atomic_dec(&mlxsw_sp->router->rif_mac_profiles_count);
+ profile = mlxsw_sp_rif_mac_profile_index_free(mlxsw_sp, mac_profile);
+ kfree(profile);
+}
+
+static int mlxsw_sp_rif_mac_profile_get(struct mlxsw_sp *mlxsw_sp,
+ const char *mac, u8 *p_mac_profile,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = mlxsw_sp_rif_mac_profile_find(mlxsw_sp, mac);
+ if (profile) {
+ refcount_inc(&profile->ref_count);
+ goto out;
+ }
+
+ profile = mlxsw_sp_rif_mac_profile_create(mlxsw_sp, mac, extack);
+ if (IS_ERR(profile))
+ return PTR_ERR(profile);
+
+out:
+ *p_mac_profile = profile->id;
+ return 0;
+}
+
+static void mlxsw_sp_rif_mac_profile_put(struct mlxsw_sp *mlxsw_sp,
+ u8 mac_profile)
+{
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr,
+ mac_profile);
+ if (WARN_ON(!profile))
+ return;
+
+ if (!refcount_dec_and_test(&profile->ref_count))
+ return;
+
+ mlxsw_sp_rif_mac_profile_destroy(mlxsw_sp, mac_profile);
+}
+
+static bool mlxsw_sp_rif_mac_profile_is_shared(const struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr,
+ rif->mac_profile_id);
+ if (WARN_ON(!profile))
+ return false;
+
+ return refcount_read(&profile->ref_count) > 1;
+}
+
+static int mlxsw_sp_rif_mac_profile_edit(struct mlxsw_sp_rif *rif,
+ const char *new_mac)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif_mac_profile *profile;
+
+ profile = idr_find(&mlxsw_sp->router->rif_mac_profiles_idr,
+ rif->mac_profile_id);
+ if (WARN_ON(!profile))
+ return -EINVAL;
+
+ ether_addr_copy(profile->mac_prefix, new_mac);
+ return 0;
+}
+
+static int
+mlxsw_sp_rif_mac_profile_replace(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif,
+ const char *new_mac,
+ struct netlink_ext_ack *extack)
+{
+ u8 mac_profile;
+ int err;
+
+ if (!mlxsw_sp_rif_mac_profile_is_shared(rif) &&
+ !mlxsw_sp_rif_mac_profile_find(mlxsw_sp, new_mac))
+ return mlxsw_sp_rif_mac_profile_edit(rif, new_mac);
+
+ err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, new_mac,
+ &mac_profile, extack);
+ if (err)
+ return err;
+
+ mlxsw_sp_rif_mac_profile_put(mlxsw_sp, rif->mac_profile_id);
+ rif->mac_profile_id = mac_profile;
+ return 0;
+}
+
+static int
+__mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
+ struct net_device *l3_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+ struct mlxsw_sp_rif_params params = {
+ .dev = l3_dev,
+ };
+ u16 vid = mlxsw_sp_port_vlan->vid;
+ struct mlxsw_sp_rif *rif;
+ struct mlxsw_sp_fid *fid;
+ int err;
+
+ mlxsw_sp_rif_subport_params_init(&params, mlxsw_sp_port_vlan);
+ rif = mlxsw_sp_rif_subport_get(mlxsw_sp, &params, extack);
+ if (IS_ERR(rif))
+ return PTR_ERR(rif);
+
+ /* FID was already created, just take a reference */
+ fid = rif->ops->fid_get(rif, extack);
+ err = mlxsw_sp_fid_port_vid_map(fid, mlxsw_sp_port, vid);
+ if (err)
+ goto err_fid_port_vid_map;
+
+ err = mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, false);
+ if (err)
+ goto err_port_vid_learning_set;
+
+ err = mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid,
+ BR_STATE_FORWARDING);
+ if (err)
+ goto err_port_vid_stp_set;
+
+ mlxsw_sp_port_vlan->fid = fid;
+
+ return 0;
+
+err_port_vid_stp_set:
+ mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
+err_port_vid_learning_set:
+ mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
+err_fid_port_vid_map:
+ mlxsw_sp_fid_put(fid);
+ mlxsw_sp_rif_subport_put(rif);
+ return err;
+}
+
+static void
+__mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = mlxsw_sp_port_vlan->mlxsw_sp_port;
+ struct mlxsw_sp_fid *fid = mlxsw_sp_port_vlan->fid;
+ struct mlxsw_sp_rif *rif = mlxsw_sp_fid_rif(fid);
+ u16 vid = mlxsw_sp_port_vlan->vid;
+
+ if (WARN_ON(mlxsw_sp_fid_type(fid) != MLXSW_SP_FID_TYPE_RFID))
+ return;
+
+ mlxsw_sp_port_vlan->fid = NULL;
+ mlxsw_sp_port_vid_stp_set(mlxsw_sp_port, vid, BR_STATE_BLOCKING);
+ mlxsw_sp_port_vid_learning_set(mlxsw_sp_port, vid, true);
+ mlxsw_sp_fid_port_vid_unmap(fid, mlxsw_sp_port, vid);
+ mlxsw_sp_fid_put(fid);
+ mlxsw_sp_rif_subport_put(rif);
+}
+
+int
+mlxsw_sp_port_vlan_router_join(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan,
+ struct net_device *l3_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port_vlan->mlxsw_sp_port->mlxsw_sp;
+ struct mlxsw_sp_rif *rif;
+ int err = 0;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
+ if (!rif)
+ goto out;
+
+ err = __mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan, l3_dev,
+ extack);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return err;
+}
+
+void
+mlxsw_sp_port_vlan_router_leave(struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port_vlan->mlxsw_sp_port->mlxsw_sp;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ __mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static int mlxsw_sp_inetaddr_port_vlan_event(struct net_device *l3_dev,
+ struct net_device *port_dev,
+ unsigned long event, u16 vid,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev);
+ struct mlxsw_sp_port_vlan *mlxsw_sp_port_vlan;
+
+ mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_vid(mlxsw_sp_port, vid);
+ if (WARN_ON(!mlxsw_sp_port_vlan))
+ return -EINVAL;
+
+ switch (event) {
+ case NETDEV_UP:
+ return __mlxsw_sp_port_vlan_router_join(mlxsw_sp_port_vlan,
+ l3_dev, extack);
+ case NETDEV_DOWN:
+ __mlxsw_sp_port_vlan_router_leave(mlxsw_sp_port_vlan);
+ break;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ if (netif_is_any_bridge_port(port_dev) || netif_is_lag_port(port_dev))
+ return 0;
+
+ return mlxsw_sp_inetaddr_port_vlan_event(port_dev, port_dev, event,
+ MLXSW_SP_DEFAULT_VID, extack);
+}
+
+static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev,
+ struct net_device *lag_dev,
+ unsigned long event, u16 vid,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *port_dev;
+ struct list_head *iter;
+ int err;
+
+ netdev_for_each_lower_dev(lag_dev, port_dev, iter) {
+ if (mlxsw_sp_port_dev_check(port_dev)) {
+ err = mlxsw_sp_inetaddr_port_vlan_event(l3_dev,
+ port_dev,
+ event, vid,
+ extack);
+ if (err)
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ if (netif_is_bridge_port(lag_dev))
+ return 0;
+
+ return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event,
+ MLXSW_SP_DEFAULT_VID, extack);
+}
+
+static int mlxsw_sp_inetaddr_bridge_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *l3_dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_params params = {
+ .dev = l3_dev,
+ };
+ struct mlxsw_sp_rif *rif;
+
+ switch (event) {
+ case NETDEV_UP:
+ if (netif_is_bridge_master(l3_dev) && br_vlan_enabled(l3_dev)) {
+ u16 proto;
+
+ br_vlan_get_proto(l3_dev, &proto);
+ if (proto == ETH_P_8021AD) {
+ NL_SET_ERR_MSG_MOD(extack, "Adding an IP address to 802.1ad bridge is not supported");
+ return -EOPNOTSUPP;
+ }
+ }
+ rif = mlxsw_sp_rif_create(mlxsw_sp, &params, extack);
+ if (IS_ERR(rif))
+ return PTR_ERR(rif);
+ break;
+ case NETDEV_DOWN:
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
+ mlxsw_sp_rif_destroy(rif);
+ break;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_inetaddr_vlan_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *vlan_dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *real_dev = vlan_dev_real_dev(vlan_dev);
+ u16 vid = vlan_dev_vlan_id(vlan_dev);
+
+ if (netif_is_bridge_port(vlan_dev))
+ return 0;
+
+ if (mlxsw_sp_port_dev_check(real_dev))
+ return mlxsw_sp_inetaddr_port_vlan_event(vlan_dev, real_dev,
+ event, vid, extack);
+ else if (netif_is_lag_master(real_dev))
+ return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event,
+ vid, extack);
+ else if (netif_is_bridge_master(real_dev) && br_vlan_enabled(real_dev))
+ return mlxsw_sp_inetaddr_bridge_event(mlxsw_sp, vlan_dev, event,
+ extack);
+
+ return 0;
+}
+
+static bool mlxsw_sp_rif_macvlan_is_vrrp4(const u8 *mac)
+{
+ u8 vrrp4[ETH_ALEN] = { 0x00, 0x00, 0x5e, 0x00, 0x01, 0x00 };
+ u8 mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
+
+ return ether_addr_equal_masked(mac, vrrp4, mask);
+}
+
+static bool mlxsw_sp_rif_macvlan_is_vrrp6(const u8 *mac)
+{
+ u8 vrrp6[ETH_ALEN] = { 0x00, 0x00, 0x5e, 0x00, 0x02, 0x00 };
+ u8 mask[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 };
+
+ return ether_addr_equal_masked(mac, vrrp6, mask);
+}
+
+static int mlxsw_sp_rif_vrrp_op(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
+ const u8 *mac, bool adding)
+{
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ u8 vrrp_id = adding ? mac[5] : 0;
+ int err;
+
+ if (!mlxsw_sp_rif_macvlan_is_vrrp4(mac) &&
+ !mlxsw_sp_rif_macvlan_is_vrrp6(mac))
+ return 0;
+
+ mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+ if (err)
+ return err;
+
+ if (mlxsw_sp_rif_macvlan_is_vrrp4(mac))
+ mlxsw_reg_ritr_if_vrrp_id_ipv4_set(ritr_pl, vrrp_id);
+ else
+ mlxsw_reg_ritr_if_vrrp_id_ipv6_set(ritr_pl, vrrp_id);
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static int mlxsw_sp_rif_macvlan_add(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *macvlan_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct macvlan_dev *vlan = netdev_priv(macvlan_dev);
+ struct mlxsw_sp_rif *rif;
+ int err;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, vlan->lowerdev);
+ if (!rif) {
+ NL_SET_ERR_MSG_MOD(extack, "macvlan is only supported on top of router interfaces");
+ return -EOPNOTSUPP;
+ }
+
+ err = mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), true);
+ if (err)
+ return err;
+
+ err = mlxsw_sp_rif_vrrp_op(mlxsw_sp, rif->rif_index,
+ macvlan_dev->dev_addr, true);
+ if (err)
+ goto err_rif_vrrp_add;
+
+ /* Make sure the bridge driver does not have this MAC pointing at
+ * some other port.
+ */
+ if (rif->ops->fdb_del)
+ rif->ops->fdb_del(rif, macvlan_dev->dev_addr);
+
+ return 0;
+
+err_rif_vrrp_add:
+ mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+ return err;
+}
+
+static void __mlxsw_sp_rif_macvlan_del(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *macvlan_dev)
+{
+ struct macvlan_dev *vlan = netdev_priv(macvlan_dev);
+ struct mlxsw_sp_rif *rif;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, vlan->lowerdev);
+ /* If we do not have a RIF, then we already took care of
+ * removing the macvlan's MAC during RIF deletion.
+ */
+ if (!rif)
+ return;
+ mlxsw_sp_rif_vrrp_op(mlxsw_sp, rif->rif_index, macvlan_dev->dev_addr,
+ false);
+ mlxsw_sp_rif_fdb_op(mlxsw_sp, macvlan_dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+}
+
+void mlxsw_sp_rif_macvlan_del(struct mlxsw_sp *mlxsw_sp,
+ const struct net_device *macvlan_dev)
+{
+ mutex_lock(&mlxsw_sp->router->lock);
+ __mlxsw_sp_rif_macvlan_del(mlxsw_sp, macvlan_dev);
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static int mlxsw_sp_inetaddr_macvlan_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *macvlan_dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ switch (event) {
+ case NETDEV_UP:
+ return mlxsw_sp_rif_macvlan_add(mlxsw_sp, macvlan_dev, extack);
+ case NETDEV_DOWN:
+ __mlxsw_sp_rif_macvlan_del(mlxsw_sp, macvlan_dev);
+ break;
+ }
+
+ return 0;
+}
+
+static int __mlxsw_sp_inetaddr_event(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *dev,
+ unsigned long event,
+ struct netlink_ext_ack *extack)
+{
+ if (mlxsw_sp_port_dev_check(dev))
+ return mlxsw_sp_inetaddr_port_event(dev, event, extack);
+ else if (netif_is_lag_master(dev))
+ return mlxsw_sp_inetaddr_lag_event(dev, event, extack);
+ else if (netif_is_bridge_master(dev))
+ return mlxsw_sp_inetaddr_bridge_event(mlxsw_sp, dev, event,
+ extack);
+ else if (is_vlan_dev(dev))
+ return mlxsw_sp_inetaddr_vlan_event(mlxsw_sp, dev, event,
+ extack);
+ else if (netif_is_macvlan(dev))
+ return mlxsw_sp_inetaddr_macvlan_event(mlxsw_sp, dev, event,
+ extack);
+ else
+ return 0;
+}
+
+static int mlxsw_sp_inetaddr_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct in_ifaddr *ifa = (struct in_ifaddr *) ptr;
+ struct net_device *dev = ifa->ifa_dev->dev;
+ struct mlxsw_sp_router *router;
+ struct mlxsw_sp_rif *rif;
+ int err = 0;
+
+ /* NETDEV_UP event is handled by mlxsw_sp_inetaddr_valid_event */
+ if (event == NETDEV_UP)
+ return NOTIFY_DONE;
+
+ router = container_of(nb, struct mlxsw_sp_router, inetaddr_nb);
+ mutex_lock(&router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(router->mlxsw_sp, dev);
+ if (!mlxsw_sp_rif_should_config(rif, dev, event))
+ goto out;
+
+ err = __mlxsw_sp_inetaddr_event(router->mlxsw_sp, dev, event, NULL);
+out:
+ mutex_unlock(&router->lock);
+ return notifier_from_errno(err);
+}
+
+int mlxsw_sp_inetaddr_valid_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct in_validator_info *ivi = (struct in_validator_info *) ptr;
+ struct net_device *dev = ivi->ivi_dev->dev;
+ struct mlxsw_sp *mlxsw_sp;
+ struct mlxsw_sp_rif *rif;
+ int err = 0;
+
+ mlxsw_sp = mlxsw_sp_lower_get(dev);
+ if (!mlxsw_sp)
+ return NOTIFY_DONE;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!mlxsw_sp_rif_should_config(rif, dev, event))
+ goto out;
+
+ err = __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, ivi->extack);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return notifier_from_errno(err);
+}
+
+struct mlxsw_sp_inet6addr_event_work {
+ struct work_struct work;
+ struct mlxsw_sp *mlxsw_sp;
+ struct net_device *dev;
+ unsigned long event;
+};
+
+static void mlxsw_sp_inet6addr_event_work(struct work_struct *work)
+{
+ struct mlxsw_sp_inet6addr_event_work *inet6addr_work =
+ container_of(work, struct mlxsw_sp_inet6addr_event_work, work);
+ struct mlxsw_sp *mlxsw_sp = inet6addr_work->mlxsw_sp;
+ struct net_device *dev = inet6addr_work->dev;
+ unsigned long event = inet6addr_work->event;
+ struct mlxsw_sp_rif *rif;
+
+ rtnl_lock();
+ mutex_lock(&mlxsw_sp->router->lock);
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!mlxsw_sp_rif_should_config(rif, dev, event))
+ goto out;
+
+ __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, NULL);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ rtnl_unlock();
+ dev_put(dev);
+ kfree(inet6addr_work);
+}
+
+/* Called with rcu_read_lock() */
+static int mlxsw_sp_inet6addr_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct inet6_ifaddr *if6 = (struct inet6_ifaddr *) ptr;
+ struct mlxsw_sp_inet6addr_event_work *inet6addr_work;
+ struct net_device *dev = if6->idev->dev;
+ struct mlxsw_sp_router *router;
+
+ /* NETDEV_UP event is handled by mlxsw_sp_inet6addr_valid_event */
+ if (event == NETDEV_UP)
+ return NOTIFY_DONE;
+
+ inet6addr_work = kzalloc(sizeof(*inet6addr_work), GFP_ATOMIC);
+ if (!inet6addr_work)
+ return NOTIFY_BAD;
+
+ router = container_of(nb, struct mlxsw_sp_router, inet6addr_nb);
+ INIT_WORK(&inet6addr_work->work, mlxsw_sp_inet6addr_event_work);
+ inet6addr_work->mlxsw_sp = router->mlxsw_sp;
+ inet6addr_work->dev = dev;
+ inet6addr_work->event = event;
+ dev_hold(dev);
+ mlxsw_core_schedule_work(&inet6addr_work->work);
+
+ return NOTIFY_DONE;
+}
+
+int mlxsw_sp_inet6addr_valid_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct in6_validator_info *i6vi = (struct in6_validator_info *) ptr;
+ struct net_device *dev = i6vi->i6vi_dev->dev;
+ struct mlxsw_sp *mlxsw_sp;
+ struct mlxsw_sp_rif *rif;
+ int err = 0;
+
+ mlxsw_sp = mlxsw_sp_lower_get(dev);
+ if (!mlxsw_sp)
+ return NOTIFY_DONE;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!mlxsw_sp_rif_should_config(rif, dev, event))
+ goto out;
+
+ err = __mlxsw_sp_inetaddr_event(mlxsw_sp, dev, event, i6vi->extack);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return notifier_from_errno(err);
+}
+
+static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index,
+ const char *mac, int mtu, u8 mac_profile)
+{
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ int err;
+
+ mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index);
+ err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+ if (err)
+ return err;
+
+ mlxsw_reg_ritr_mtu_set(ritr_pl, mtu);
+ mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac);
+ mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, mac_profile);
+ mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static int
+mlxsw_sp_router_port_change_event(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *dev = rif->dev;
+ u8 old_mac_profile;
+ u16 fid_index;
+ int err;
+
+ fid_index = mlxsw_sp_fid_index(rif->fid);
+
+ err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, false);
+ if (err)
+ return err;
+
+ old_mac_profile = rif->mac_profile_id;
+ err = mlxsw_sp_rif_mac_profile_replace(mlxsw_sp, rif, dev->dev_addr,
+ extack);
+ if (err)
+ goto err_rif_mac_profile_replace;
+
+ err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr,
+ dev->mtu, rif->mac_profile_id);
+ if (err)
+ goto err_rif_edit;
+
+ err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, fid_index, true);
+ if (err)
+ goto err_rif_fdb_op;
+
+ if (rif->mtu != dev->mtu) {
+ struct mlxsw_sp_vr *vr;
+ int i;
+
+ /* The RIF is relevant only to its mr_table instance, as unlike
+ * unicast routing, in multicast routing a RIF cannot be shared
+ * between several multicast routing tables.
+ */
+ vr = &mlxsw_sp->router->vrs[rif->vr_id];
+ for (i = 0; i < MLXSW_SP_L3_PROTO_MAX; i++)
+ mlxsw_sp_mr_rif_mtu_update(vr->mr_table[i],
+ rif, dev->mtu);
+ }
+
+ ether_addr_copy(rif->addr, dev->dev_addr);
+ rif->mtu = dev->mtu;
+
+ netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index);
+
+ return 0;
+
+err_rif_fdb_op:
+ mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu,
+ old_mac_profile);
+err_rif_edit:
+ mlxsw_sp_rif_mac_profile_replace(mlxsw_sp, rif, rif->addr, extack);
+err_rif_mac_profile_replace:
+ mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, fid_index, true);
+ return err;
+}
+
+static int mlxsw_sp_router_port_pre_changeaddr_event(struct mlxsw_sp_rif *rif,
+ struct netdev_notifier_pre_changeaddr_info *info)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif_mac_profile *profile;
+ struct netlink_ext_ack *extack;
+ u8 max_rif_mac_profiles;
+ u64 occ;
+
+ extack = netdev_notifier_info_to_extack(&info->info);
+
+ profile = mlxsw_sp_rif_mac_profile_find(mlxsw_sp, info->dev_addr);
+ if (profile)
+ return 0;
+
+ max_rif_mac_profiles = mlxsw_sp->router->max_rif_mac_profile;
+ occ = mlxsw_sp_rif_mac_profiles_occ_get(mlxsw_sp);
+ if (occ < max_rif_mac_profiles)
+ return 0;
+
+ if (!mlxsw_sp_rif_mac_profile_is_shared(rif))
+ return 0;
+
+ NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interface MAC profiles");
+ return -ENOBUFS;
+}
+
+static bool mlxsw_sp_is_offload_xstats_event(unsigned long event)
+{
+ switch (event) {
+ case NETDEV_OFFLOAD_XSTATS_ENABLE:
+ case NETDEV_OFFLOAD_XSTATS_DISABLE:
+ case NETDEV_OFFLOAD_XSTATS_REPORT_USED:
+ case NETDEV_OFFLOAD_XSTATS_REPORT_DELTA:
+ return true;
+ }
+
+ return false;
+}
+
+static int
+mlxsw_sp_router_port_offload_xstats_cmd(struct mlxsw_sp_rif *rif,
+ unsigned long event,
+ struct netdev_notifier_offload_xstats_info *info)
+{
+ switch (info->type) {
+ case NETDEV_OFFLOAD_XSTATS_TYPE_L3:
+ break;
+ default:
+ return 0;
+ }
+
+ switch (event) {
+ case NETDEV_OFFLOAD_XSTATS_ENABLE:
+ return mlxsw_sp_router_port_l3_stats_enable(rif);
+ case NETDEV_OFFLOAD_XSTATS_DISABLE:
+ mlxsw_sp_router_port_l3_stats_disable(rif);
+ return 0;
+ case NETDEV_OFFLOAD_XSTATS_REPORT_USED:
+ mlxsw_sp_router_port_l3_stats_report_used(rif, info);
+ return 0;
+ case NETDEV_OFFLOAD_XSTATS_REPORT_DELTA:
+ return mlxsw_sp_router_port_l3_stats_report_delta(rif, info);
+ }
+
+ WARN_ON_ONCE(1);
+ return 0;
+}
+
+static int
+mlxsw_sp_netdevice_offload_xstats_cmd(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *dev,
+ unsigned long event,
+ struct netdev_notifier_offload_xstats_info *info)
+{
+ struct mlxsw_sp_rif *rif;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!rif)
+ return 0;
+
+ return mlxsw_sp_router_port_offload_xstats_cmd(rif, event, info);
+}
+
+static bool mlxsw_sp_is_router_event(unsigned long event)
+{
+ switch (event) {
+ case NETDEV_PRE_CHANGEADDR:
+ case NETDEV_CHANGEADDR:
+ case NETDEV_CHANGEMTU:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int mlxsw_sp_netdevice_router_port_event(struct net_device *dev,
+ unsigned long event, void *ptr)
+{
+ struct netlink_ext_ack *extack = netdev_notifier_info_to_extack(ptr);
+ struct mlxsw_sp *mlxsw_sp;
+ struct mlxsw_sp_rif *rif;
+
+ mlxsw_sp = mlxsw_sp_lower_get(dev);
+ if (!mlxsw_sp)
+ return 0;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev);
+ if (!rif)
+ return 0;
+
+ switch (event) {
+ case NETDEV_CHANGEMTU:
+ case NETDEV_CHANGEADDR:
+ return mlxsw_sp_router_port_change_event(mlxsw_sp, rif, extack);
+ case NETDEV_PRE_CHANGEADDR:
+ return mlxsw_sp_router_port_pre_changeaddr_event(rif, ptr);
+ default:
+ WARN_ON_ONCE(1);
+ break;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *l3_dev,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif *rif;
+
+ /* If netdev is already associated with a RIF, then we need to
+ * destroy it and create a new one with the new virtual router ID.
+ */
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
+ if (rif)
+ __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_DOWN,
+ extack);
+
+ return __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_UP, extack);
+}
+
+static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp,
+ struct net_device *l3_dev)
+{
+ struct mlxsw_sp_rif *rif;
+
+ rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev);
+ if (!rif)
+ return;
+ __mlxsw_sp_inetaddr_event(mlxsw_sp, l3_dev, NETDEV_DOWN, NULL);
+}
+
+static bool mlxsw_sp_is_vrf_event(unsigned long event, void *ptr)
+{
+ struct netdev_notifier_changeupper_info *info = ptr;
+
+ if (event != NETDEV_PRECHANGEUPPER && event != NETDEV_CHANGEUPPER)
+ return false;
+ return netif_is_l3_master(info->upper_dev);
+}
+
+static int
+mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event,
+ struct netdev_notifier_changeupper_info *info)
+{
+ struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev);
+ int err = 0;
+
+ /* We do not create a RIF for a macvlan, but only use it to
+ * direct more MAC addresses to the router.
+ */
+ if (!mlxsw_sp || netif_is_macvlan(l3_dev))
+ return 0;
+
+ switch (event) {
+ case NETDEV_PRECHANGEUPPER:
+ break;
+ case NETDEV_CHANGEUPPER:
+ if (info->linking) {
+ struct netlink_ext_ack *extack;
+
+ extack = netdev_notifier_info_to_extack(&info->info);
+ err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev, extack);
+ } else {
+ mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev);
+ }
+ break;
+ }
+
+ return err;
+}
+
+static int mlxsw_sp_router_netdevice_event(struct notifier_block *nb,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+ struct mlxsw_sp_router *router;
+ struct mlxsw_sp *mlxsw_sp;
+ int err = 0;
+
+ router = container_of(nb, struct mlxsw_sp_router, netdevice_nb);
+ mlxsw_sp = router->mlxsw_sp;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+
+ if (mlxsw_sp_is_offload_xstats_event(event))
+ err = mlxsw_sp_netdevice_offload_xstats_cmd(mlxsw_sp, dev,
+ event, ptr);
+ else if (mlxsw_sp_netdev_is_ipip_ol(mlxsw_sp, dev))
+ err = mlxsw_sp_netdevice_ipip_ol_event(mlxsw_sp, dev,
+ event, ptr);
+ else if (mlxsw_sp_netdev_is_ipip_ul(mlxsw_sp, dev))
+ err = mlxsw_sp_netdevice_ipip_ul_event(mlxsw_sp, dev,
+ event, ptr);
+ else if (mlxsw_sp_is_router_event(event))
+ err = mlxsw_sp_netdevice_router_port_event(dev, event, ptr);
+ else if (mlxsw_sp_is_vrf_event(event, ptr))
+ err = mlxsw_sp_netdevice_vrf_event(dev, event, ptr);
+
+ mutex_unlock(&mlxsw_sp->router->lock);
+
+ return notifier_from_errno(err);
+}
+
+static int __mlxsw_sp_rif_macvlan_flush(struct net_device *dev,
+ struct netdev_nested_priv *priv)
+{
+ struct mlxsw_sp_rif *rif = (struct mlxsw_sp_rif *)priv->data;
+
+ if (!netif_is_macvlan(dev))
+ return 0;
+
+ return mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+}
+
+static int mlxsw_sp_rif_macvlan_flush(struct mlxsw_sp_rif *rif)
+{
+ struct netdev_nested_priv priv = {
+ .data = (void *)rif,
+ };
+
+ if (!netif_is_macvlan_port(rif->dev))
+ return 0;
+
+ netdev_warn(rif->dev, "Router interface is deleted. Upper macvlans will not work\n");
+ return netdev_walk_all_upper_dev_rcu(rif->dev,
+ __mlxsw_sp_rif_macvlan_flush, &priv);
+}
+
+static void mlxsw_sp_rif_subport_setup(struct mlxsw_sp_rif *rif,
+ const struct mlxsw_sp_rif_params *params)
+{
+ struct mlxsw_sp_rif_subport *rif_subport;
+
+ rif_subport = mlxsw_sp_rif_subport_rif(rif);
+ refcount_set(&rif_subport->ref_count, 1);
+ rif_subport->vid = params->vid;
+ rif_subport->lag = params->lag;
+ if (params->lag)
+ rif_subport->lag_id = params->lag_id;
+ else
+ rif_subport->system_port = params->system_port;
+}
+
+static int mlxsw_sp_rif_subport_op(struct mlxsw_sp_rif *rif, bool enable)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif_subport *rif_subport;
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+ u16 efid;
+
+ rif_subport = mlxsw_sp_rif_subport_rif(rif);
+ mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_SP_IF,
+ rif->rif_index, rif->vr_id, rif->dev->mtu);
+ mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr);
+ mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, rif->mac_profile_id);
+ efid = mlxsw_sp_fid_index(rif->fid);
+ mlxsw_reg_ritr_sp_if_pack(ritr_pl, rif_subport->lag,
+ rif_subport->lag ? rif_subport->lag_id :
+ rif_subport->system_port,
+ efid, 0);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static int mlxsw_sp_rif_subport_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ u8 mac_profile;
+ int err;
+
+ err = mlxsw_sp_rif_mac_profile_get(rif->mlxsw_sp, rif->addr,
+ &mac_profile, extack);
+ if (err)
+ return err;
+ rif->mac_profile_id = mac_profile;
+
+ err = mlxsw_sp_rif_subport_op(rif, true);
+ if (err)
+ goto err_rif_subport_op;
+
+ err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), true);
+ if (err)
+ goto err_rif_fdb_op;
+
+ err = mlxsw_sp_fid_rif_set(rif->fid, rif);
+ if (err)
+ goto err_fid_rif_set;
+
+ return 0;
+
+err_fid_rif_set:
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+err_rif_fdb_op:
+ mlxsw_sp_rif_subport_op(rif, false);
+err_rif_subport_op:
+ mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, mac_profile);
+ return err;
+}
+
+static void mlxsw_sp_rif_subport_deconfigure(struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_fid *fid = rif->fid;
+
+ mlxsw_sp_fid_rif_unset(fid);
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(fid), false);
+ mlxsw_sp_rif_macvlan_flush(rif);
+ mlxsw_sp_rif_subport_op(rif, false);
+ mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id);
+}
+
+static struct mlxsw_sp_fid *
+mlxsw_sp_rif_subport_fid_get(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ return mlxsw_sp_fid_rfid_get(rif->mlxsw_sp, rif->rif_index);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_subport_ops = {
+ .type = MLXSW_SP_RIF_TYPE_SUBPORT,
+ .rif_size = sizeof(struct mlxsw_sp_rif_subport),
+ .setup = mlxsw_sp_rif_subport_setup,
+ .configure = mlxsw_sp_rif_subport_configure,
+ .deconfigure = mlxsw_sp_rif_subport_deconfigure,
+ .fid_get = mlxsw_sp_rif_subport_fid_get,
+};
+
+static int mlxsw_sp_rif_fid_op(struct mlxsw_sp_rif *rif, u16 fid, bool enable)
+{
+ enum mlxsw_reg_ritr_if_type type = MLXSW_REG_RITR_FID_IF;
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+
+ mlxsw_reg_ritr_pack(ritr_pl, enable, type, rif->rif_index, rif->vr_id,
+ rif->dev->mtu);
+ mlxsw_reg_ritr_mac_pack(ritr_pl, rif->dev->dev_addr);
+ mlxsw_reg_ritr_if_mac_profile_id_set(ritr_pl, rif->mac_profile_id);
+ mlxsw_reg_ritr_fid_if_fid_set(ritr_pl, fid);
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+u16 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp)
+{
+ return mlxsw_core_max_ports(mlxsw_sp->core) + 1;
+}
+
+static int mlxsw_sp_rif_fid_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ u16 fid_index = mlxsw_sp_fid_index(rif->fid);
+ u8 mac_profile;
+ int err;
+
+ err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, rif->addr,
+ &mac_profile, extack);
+ if (err)
+ return err;
+ rif->mac_profile_id = mac_profile;
+
+ err = mlxsw_sp_rif_fid_op(rif, fid_index, true);
+ if (err)
+ goto err_rif_fid_op;
+
+ err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), true);
+ if (err)
+ goto err_fid_mc_flood_set;
+
+ err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), true);
+ if (err)
+ goto err_fid_bc_flood_set;
+
+ err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), true);
+ if (err)
+ goto err_rif_fdb_op;
+
+ err = mlxsw_sp_fid_rif_set(rif->fid, rif);
+ if (err)
+ goto err_fid_rif_set;
+
+ return 0;
+
+err_fid_rif_set:
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+err_rif_fdb_op:
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+err_fid_bc_flood_set:
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+err_fid_mc_flood_set:
+ mlxsw_sp_rif_fid_op(rif, fid_index, false);
+err_rif_fid_op:
+ mlxsw_sp_rif_mac_profile_put(mlxsw_sp, mac_profile);
+ return err;
+}
+
+static void mlxsw_sp_rif_fid_deconfigure(struct mlxsw_sp_rif *rif)
+{
+ u16 fid_index = mlxsw_sp_fid_index(rif->fid);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_fid *fid = rif->fid;
+
+ mlxsw_sp_fid_rif_unset(fid);
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(fid), false);
+ mlxsw_sp_rif_macvlan_flush(rif);
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+ mlxsw_sp_rif_fid_op(rif, fid_index, false);
+ mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id);
+}
+
+static struct mlxsw_sp_fid *
+mlxsw_sp_rif_fid_fid_get(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ return mlxsw_sp_fid_8021d_get(rif->mlxsw_sp, rif->dev->ifindex);
+}
+
+static void mlxsw_sp_rif_fid_fdb_del(struct mlxsw_sp_rif *rif, const char *mac)
+{
+ struct switchdev_notifier_fdb_info info = {};
+ struct net_device *dev;
+
+ dev = br_fdb_find_port(rif->dev, mac, 0);
+ if (!dev)
+ return;
+
+ info.addr = mac;
+ info.vid = 0;
+ call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, dev, &info.info,
+ NULL);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp_rif_fid_ops = {
+ .type = MLXSW_SP_RIF_TYPE_FID,
+ .rif_size = sizeof(struct mlxsw_sp_rif),
+ .configure = mlxsw_sp_rif_fid_configure,
+ .deconfigure = mlxsw_sp_rif_fid_deconfigure,
+ .fid_get = mlxsw_sp_rif_fid_fid_get,
+ .fdb_del = mlxsw_sp_rif_fid_fdb_del,
+};
+
+static struct mlxsw_sp_fid *
+mlxsw_sp_rif_vlan_fid_get(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ struct net_device *br_dev;
+ u16 vid;
+ int err;
+
+ if (is_vlan_dev(rif->dev)) {
+ vid = vlan_dev_vlan_id(rif->dev);
+ br_dev = vlan_dev_real_dev(rif->dev);
+ if (WARN_ON(!netif_is_bridge_master(br_dev)))
+ return ERR_PTR(-EINVAL);
+ } else {
+ err = br_vlan_get_pvid(rif->dev, &vid);
+ if (err < 0 || !vid) {
+ NL_SET_ERR_MSG_MOD(extack, "Couldn't determine bridge PVID");
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
+ return mlxsw_sp_fid_8021q_get(rif->mlxsw_sp, vid);
+}
+
+static void mlxsw_sp_rif_vlan_fdb_del(struct mlxsw_sp_rif *rif, const char *mac)
+{
+ struct switchdev_notifier_fdb_info info = {};
+ u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
+ struct net_device *br_dev;
+ struct net_device *dev;
+
+ br_dev = is_vlan_dev(rif->dev) ? vlan_dev_real_dev(rif->dev) : rif->dev;
+ dev = br_fdb_find_port(br_dev, mac, vid);
+ if (!dev)
+ return;
+
+ info.addr = mac;
+ info.vid = vid;
+ call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, dev, &info.info,
+ NULL);
+}
+
+static int mlxsw_sp_rif_vlan_op(struct mlxsw_sp_rif *rif, u16 vid, u16 efid,
+ bool enable)
+{
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+
+ mlxsw_reg_ritr_vlan_if_pack(ritr_pl, enable, rif->rif_index, rif->vr_id,
+ rif->dev->mtu, rif->dev->dev_addr,
+ rif->mac_profile_id, vid, efid);
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static int mlxsw_sp_rif_vlan_configure(struct mlxsw_sp_rif *rif, u16 efid,
+ struct netlink_ext_ack *extack)
+{
+ u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ u8 mac_profile;
+ int err;
+
+ err = mlxsw_sp_rif_mac_profile_get(mlxsw_sp, rif->addr,
+ &mac_profile, extack);
+ if (err)
+ return err;
+ rif->mac_profile_id = mac_profile;
+
+ err = mlxsw_sp_rif_vlan_op(rif, vid, efid, true);
+ if (err)
+ goto err_rif_vlan_fid_op;
+
+ err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), true);
+ if (err)
+ goto err_fid_mc_flood_set;
+
+ err = mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), true);
+ if (err)
+ goto err_fid_bc_flood_set;
+
+ err = mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), true);
+ if (err)
+ goto err_rif_fdb_op;
+
+ err = mlxsw_sp_fid_rif_set(rif->fid, rif);
+ if (err)
+ goto err_fid_rif_set;
+
+ return 0;
+
+err_fid_rif_set:
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+err_rif_fdb_op:
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+err_fid_bc_flood_set:
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+err_fid_mc_flood_set:
+ mlxsw_sp_rif_vlan_op(rif, vid, 0, false);
+err_rif_vlan_fid_op:
+ mlxsw_sp_rif_mac_profile_put(mlxsw_sp, mac_profile);
+ return err;
+}
+
+static void mlxsw_sp_rif_vlan_deconfigure(struct mlxsw_sp_rif *rif)
+{
+ u16 vid = mlxsw_sp_fid_8021q_vid(rif->fid);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+
+ mlxsw_sp_fid_rif_unset(rif->fid);
+ mlxsw_sp_rif_fdb_op(rif->mlxsw_sp, rif->dev->dev_addr,
+ mlxsw_sp_fid_index(rif->fid), false);
+ mlxsw_sp_rif_macvlan_flush(rif);
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_BC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+ mlxsw_sp_fid_flood_set(rif->fid, MLXSW_SP_FLOOD_TYPE_MC,
+ mlxsw_sp_router_port(mlxsw_sp), false);
+ mlxsw_sp_rif_vlan_op(rif, vid, 0, false);
+ mlxsw_sp_rif_mac_profile_put(rif->mlxsw_sp, rif->mac_profile_id);
+}
+
+static int mlxsw_sp1_rif_vlan_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ return mlxsw_sp_rif_vlan_configure(rif, 0, extack);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp1_rif_vlan_ops = {
+ .type = MLXSW_SP_RIF_TYPE_VLAN,
+ .rif_size = sizeof(struct mlxsw_sp_rif),
+ .configure = mlxsw_sp1_rif_vlan_configure,
+ .deconfigure = mlxsw_sp_rif_vlan_deconfigure,
+ .fid_get = mlxsw_sp_rif_vlan_fid_get,
+ .fdb_del = mlxsw_sp_rif_vlan_fdb_del,
+};
+
+static int mlxsw_sp2_rif_vlan_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ u16 efid = mlxsw_sp_fid_index(rif->fid);
+
+ return mlxsw_sp_rif_vlan_configure(rif, efid, extack);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp2_rif_vlan_ops = {
+ .type = MLXSW_SP_RIF_TYPE_VLAN,
+ .rif_size = sizeof(struct mlxsw_sp_rif),
+ .configure = mlxsw_sp2_rif_vlan_configure,
+ .deconfigure = mlxsw_sp_rif_vlan_deconfigure,
+ .fid_get = mlxsw_sp_rif_vlan_fid_get,
+ .fdb_del = mlxsw_sp_rif_vlan_fdb_del,
+};
+
+static struct mlxsw_sp_rif_ipip_lb *
+mlxsw_sp_rif_ipip_lb_rif(struct mlxsw_sp_rif *rif)
+{
+ return container_of(rif, struct mlxsw_sp_rif_ipip_lb, common);
+}
+
+static void
+mlxsw_sp_rif_ipip_lb_setup(struct mlxsw_sp_rif *rif,
+ const struct mlxsw_sp_rif_params *params)
+{
+ struct mlxsw_sp_rif_params_ipip_lb *params_lb;
+ struct mlxsw_sp_rif_ipip_lb *rif_lb;
+
+ params_lb = container_of(params, struct mlxsw_sp_rif_params_ipip_lb,
+ common);
+ rif_lb = mlxsw_sp_rif_ipip_lb_rif(rif);
+ rif_lb->lb_config = params_lb->lb_config;
+}
+
+static int
+mlxsw_sp1_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif);
+ u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(rif->dev);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_vr *ul_vr;
+ int err;
+
+ ul_vr = mlxsw_sp_vr_get(mlxsw_sp, ul_tb_id, NULL);
+ if (IS_ERR(ul_vr))
+ return PTR_ERR(ul_vr);
+
+ err = mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr->id, 0, true);
+ if (err)
+ goto err_loopback_op;
+
+ lb_rif->ul_vr_id = ul_vr->id;
+ lb_rif->ul_rif_id = 0;
+ ++ul_vr->rif_count;
+ return 0;
+
+err_loopback_op:
+ mlxsw_sp_vr_put(mlxsw_sp, ul_vr);
+ return err;
+}
+
+static void mlxsw_sp1_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_vr *ul_vr;
+
+ ul_vr = &mlxsw_sp->router->vrs[lb_rif->ul_vr_id];
+ mlxsw_sp_rif_ipip_lb_op(lb_rif, ul_vr->id, 0, false);
+
+ --ul_vr->rif_count;
+ mlxsw_sp_vr_put(mlxsw_sp, ul_vr);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp1_rif_ipip_lb_ops = {
+ .type = MLXSW_SP_RIF_TYPE_IPIP_LB,
+ .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb),
+ .setup = mlxsw_sp_rif_ipip_lb_setup,
+ .configure = mlxsw_sp1_rif_ipip_lb_configure,
+ .deconfigure = mlxsw_sp1_rif_ipip_lb_deconfigure,
+};
+
+static const struct mlxsw_sp_rif_ops *mlxsw_sp1_rif_ops_arr[] = {
+ [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops,
+ [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp1_rif_vlan_ops,
+ [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops,
+ [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp1_rif_ipip_lb_ops,
+};
+
+static int
+mlxsw_sp_rif_ipip_lb_ul_rif_op(struct mlxsw_sp_rif *ul_rif, bool enable)
+{
+ struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp;
+ char ritr_pl[MLXSW_REG_RITR_LEN];
+
+ mlxsw_reg_ritr_pack(ritr_pl, enable, MLXSW_REG_RITR_LOOPBACK_IF,
+ ul_rif->rif_index, ul_rif->vr_id, IP_MAX_MTU);
+ mlxsw_reg_ritr_loopback_protocol_set(ritr_pl,
+ MLXSW_REG_RITR_LOOPBACK_GENERIC);
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl);
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_ul_rif_create(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_vr *vr,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif *ul_rif;
+ u16 rif_index;
+ int err;
+
+ err = mlxsw_sp_rif_index_alloc(mlxsw_sp, &rif_index);
+ if (err) {
+ NL_SET_ERR_MSG_MOD(extack, "Exceeded number of supported router interfaces");
+ return ERR_PTR(err);
+ }
+
+ ul_rif = mlxsw_sp_rif_alloc(sizeof(*ul_rif), rif_index, vr->id, NULL);
+ if (!ul_rif)
+ return ERR_PTR(-ENOMEM);
+
+ mlxsw_sp->router->rifs[rif_index] = ul_rif;
+ ul_rif->mlxsw_sp = mlxsw_sp;
+ err = mlxsw_sp_rif_ipip_lb_ul_rif_op(ul_rif, true);
+ if (err)
+ goto ul_rif_op_err;
+
+ atomic_inc(&mlxsw_sp->router->rifs_count);
+ return ul_rif;
+
+ul_rif_op_err:
+ mlxsw_sp->router->rifs[rif_index] = NULL;
+ kfree(ul_rif);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_ul_rif_destroy(struct mlxsw_sp_rif *ul_rif)
+{
+ struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp;
+
+ atomic_dec(&mlxsw_sp->router->rifs_count);
+ mlxsw_sp_rif_ipip_lb_ul_rif_op(ul_rif, false);
+ mlxsw_sp->router->rifs[ul_rif->rif_index] = NULL;
+ kfree(ul_rif);
+}
+
+static struct mlxsw_sp_rif *
+mlxsw_sp_ul_rif_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_vr *vr;
+ int err;
+
+ vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id, extack);
+ if (IS_ERR(vr))
+ return ERR_CAST(vr);
+
+ if (refcount_inc_not_zero(&vr->ul_rif_refcnt))
+ return vr->ul_rif;
+
+ vr->ul_rif = mlxsw_sp_ul_rif_create(mlxsw_sp, vr, extack);
+ if (IS_ERR(vr->ul_rif)) {
+ err = PTR_ERR(vr->ul_rif);
+ goto err_ul_rif_create;
+ }
+
+ vr->rif_count++;
+ refcount_set(&vr->ul_rif_refcnt, 1);
+
+ return vr->ul_rif;
+
+err_ul_rif_create:
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+ return ERR_PTR(err);
+}
+
+static void mlxsw_sp_ul_rif_put(struct mlxsw_sp_rif *ul_rif)
+{
+ struct mlxsw_sp *mlxsw_sp = ul_rif->mlxsw_sp;
+ struct mlxsw_sp_vr *vr;
+
+ vr = &mlxsw_sp->router->vrs[ul_rif->vr_id];
+
+ if (!refcount_dec_and_test(&vr->ul_rif_refcnt))
+ return;
+
+ vr->rif_count--;
+ mlxsw_sp_ul_rif_destroy(ul_rif);
+ mlxsw_sp_vr_put(mlxsw_sp, vr);
+}
+
+int mlxsw_sp_router_ul_rif_get(struct mlxsw_sp *mlxsw_sp, u32 ul_tb_id,
+ u16 *ul_rif_index)
+{
+ struct mlxsw_sp_rif *ul_rif;
+ int err = 0;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ ul_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, ul_tb_id, NULL);
+ if (IS_ERR(ul_rif)) {
+ err = PTR_ERR(ul_rif);
+ goto out;
+ }
+ *ul_rif_index = ul_rif->rif_index;
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+ return err;
+}
+
+void mlxsw_sp_router_ul_rif_put(struct mlxsw_sp *mlxsw_sp, u16 ul_rif_index)
+{
+ struct mlxsw_sp_rif *ul_rif;
+
+ mutex_lock(&mlxsw_sp->router->lock);
+ ul_rif = mlxsw_sp->router->rifs[ul_rif_index];
+ if (WARN_ON(!ul_rif))
+ goto out;
+
+ mlxsw_sp_ul_rif_put(ul_rif);
+out:
+ mutex_unlock(&mlxsw_sp->router->lock);
+}
+
+static int
+mlxsw_sp2_rif_ipip_lb_configure(struct mlxsw_sp_rif *rif,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif);
+ u32 ul_tb_id = mlxsw_sp_ipip_dev_ul_tb_id(rif->dev);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif *ul_rif;
+ int err;
+
+ ul_rif = mlxsw_sp_ul_rif_get(mlxsw_sp, ul_tb_id, NULL);
+ if (IS_ERR(ul_rif))
+ return PTR_ERR(ul_rif);
+
+ err = mlxsw_sp_rif_ipip_lb_op(lb_rif, 0, ul_rif->rif_index, true);
+ if (err)
+ goto err_loopback_op;
+
+ lb_rif->ul_vr_id = 0;
+ lb_rif->ul_rif_id = ul_rif->rif_index;
+
+ return 0;
+
+err_loopback_op:
+ mlxsw_sp_ul_rif_put(ul_rif);
+ return err;
+}
+
+static void mlxsw_sp2_rif_ipip_lb_deconfigure(struct mlxsw_sp_rif *rif)
+{
+ struct mlxsw_sp_rif_ipip_lb *lb_rif = mlxsw_sp_rif_ipip_lb_rif(rif);
+ struct mlxsw_sp *mlxsw_sp = rif->mlxsw_sp;
+ struct mlxsw_sp_rif *ul_rif;
+
+ ul_rif = mlxsw_sp_rif_by_index(mlxsw_sp, lb_rif->ul_rif_id);
+ mlxsw_sp_rif_ipip_lb_op(lb_rif, 0, lb_rif->ul_rif_id, false);
+ mlxsw_sp_ul_rif_put(ul_rif);
+}
+
+static const struct mlxsw_sp_rif_ops mlxsw_sp2_rif_ipip_lb_ops = {
+ .type = MLXSW_SP_RIF_TYPE_IPIP_LB,
+ .rif_size = sizeof(struct mlxsw_sp_rif_ipip_lb),
+ .setup = mlxsw_sp_rif_ipip_lb_setup,
+ .configure = mlxsw_sp2_rif_ipip_lb_configure,
+ .deconfigure = mlxsw_sp2_rif_ipip_lb_deconfigure,
+};
+
+static const struct mlxsw_sp_rif_ops *mlxsw_sp2_rif_ops_arr[] = {
+ [MLXSW_SP_RIF_TYPE_SUBPORT] = &mlxsw_sp_rif_subport_ops,
+ [MLXSW_SP_RIF_TYPE_VLAN] = &mlxsw_sp2_rif_vlan_ops,
+ [MLXSW_SP_RIF_TYPE_FID] = &mlxsw_sp_rif_fid_ops,
+ [MLXSW_SP_RIF_TYPE_IPIP_LB] = &mlxsw_sp2_rif_ipip_lb_ops,
+};
+
+static int mlxsw_sp_rifs_init(struct mlxsw_sp *mlxsw_sp)
+{
+ u64 max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
+ struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+ struct mlxsw_core *core = mlxsw_sp->core;
+
+ if (!MLXSW_CORE_RES_VALID(core, MAX_RIF_MAC_PROFILES))
+ return -EIO;
+ mlxsw_sp->router->max_rif_mac_profile =
+ MLXSW_CORE_RES_GET(core, MAX_RIF_MAC_PROFILES);
+
+ mlxsw_sp->router->rifs = kcalloc(max_rifs,
+ sizeof(struct mlxsw_sp_rif *),
+ GFP_KERNEL);
+ if (!mlxsw_sp->router->rifs)
+ return -ENOMEM;
+
+ idr_init(&mlxsw_sp->router->rif_mac_profiles_idr);
+ atomic_set(&mlxsw_sp->router->rif_mac_profiles_count, 0);
+ atomic_set(&mlxsw_sp->router->rifs_count, 0);
+ devl_resource_occ_get_register(devlink,
+ MLXSW_SP_RESOURCE_RIF_MAC_PROFILES,
+ mlxsw_sp_rif_mac_profiles_occ_get,
+ mlxsw_sp);
+ devl_resource_occ_get_register(devlink,
+ MLXSW_SP_RESOURCE_RIFS,
+ mlxsw_sp_rifs_occ_get,
+ mlxsw_sp);
+
+ return 0;
+}
+
+static void mlxsw_sp_rifs_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+ int i;
+
+ WARN_ON_ONCE(atomic_read(&mlxsw_sp->router->rifs_count));
+ for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++)
+ WARN_ON_ONCE(mlxsw_sp->router->rifs[i]);
+
+ devl_resource_occ_get_unregister(devlink, MLXSW_SP_RESOURCE_RIFS);
+ devl_resource_occ_get_unregister(devlink,
+ MLXSW_SP_RESOURCE_RIF_MAC_PROFILES);
+ WARN_ON(!idr_is_empty(&mlxsw_sp->router->rif_mac_profiles_idr));
+ idr_destroy(&mlxsw_sp->router->rif_mac_profiles_idr);
+ kfree(mlxsw_sp->router->rifs);
+}
+
+static int
+mlxsw_sp_ipip_config_tigcr(struct mlxsw_sp *mlxsw_sp)
+{
+ char tigcr_pl[MLXSW_REG_TIGCR_LEN];
+
+ mlxsw_reg_tigcr_pack(tigcr_pl, true, 0);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(tigcr), tigcr_pl);
+}
+
+static int mlxsw_sp_ipips_init(struct mlxsw_sp *mlxsw_sp)
+{
+ int err;
+
+ INIT_LIST_HEAD(&mlxsw_sp->router->ipip_list);
+
+ err = mlxsw_sp_ipip_ecn_encap_init(mlxsw_sp);
+ if (err)
+ return err;
+ err = mlxsw_sp_ipip_ecn_decap_init(mlxsw_sp);
+ if (err)
+ return err;
+
+ return mlxsw_sp_ipip_config_tigcr(mlxsw_sp);
+}
+
+static int mlxsw_sp1_ipips_init(struct mlxsw_sp *mlxsw_sp)
+{
+ mlxsw_sp->router->ipip_ops_arr = mlxsw_sp1_ipip_ops_arr;
+ return mlxsw_sp_ipips_init(mlxsw_sp);
+}
+
+static int mlxsw_sp2_ipips_init(struct mlxsw_sp *mlxsw_sp)
+{
+ mlxsw_sp->router->ipip_ops_arr = mlxsw_sp2_ipip_ops_arr;
+ return mlxsw_sp_ipips_init(mlxsw_sp);
+}
+
+static void mlxsw_sp_ipips_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ WARN_ON(!list_empty(&mlxsw_sp->router->ipip_list));
+}
+
+static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb)
+{
+ struct mlxsw_sp_router *router;
+
+ /* Flush pending FIB notifications and then flush the device's
+ * table before requesting another dump. The FIB notification
+ * block is unregistered, so no need to take RTNL.
+ */
+ mlxsw_core_flush_owq();
+ router = container_of(nb, struct mlxsw_sp_router, fib_nb);
+ mlxsw_sp_router_fib_flush(router->mlxsw_sp);
+}
+
+#ifdef CONFIG_IP_ROUTE_MULTIPATH
+struct mlxsw_sp_mp_hash_config {
+ DECLARE_BITMAP(headers, __MLXSW_REG_RECR2_HEADER_CNT);
+ DECLARE_BITMAP(fields, __MLXSW_REG_RECR2_FIELD_CNT);
+ DECLARE_BITMAP(inner_headers, __MLXSW_REG_RECR2_HEADER_CNT);
+ DECLARE_BITMAP(inner_fields, __MLXSW_REG_RECR2_INNER_FIELD_CNT);
+ bool inc_parsing_depth;
+};
+
+#define MLXSW_SP_MP_HASH_HEADER_SET(_headers, _header) \
+ bitmap_set(_headers, MLXSW_REG_RECR2_##_header, 1)
+
+#define MLXSW_SP_MP_HASH_FIELD_SET(_fields, _field) \
+ bitmap_set(_fields, MLXSW_REG_RECR2_##_field, 1)
+
+#define MLXSW_SP_MP_HASH_FIELD_RANGE_SET(_fields, _field, _nr) \
+ bitmap_set(_fields, MLXSW_REG_RECR2_##_field, _nr)
+
+static void mlxsw_sp_mp_hash_inner_l3(struct mlxsw_sp_mp_hash_config *config)
+{
+ unsigned long *inner_headers = config->inner_headers;
+ unsigned long *inner_fields = config->inner_fields;
+
+ /* IPv4 inner */
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_SIP0, 4);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_DIP0, 4);
+ /* IPv6 inner */
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_SIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_SIP8, 8);
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_DIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_DIP8, 8);
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_NEXT_HEADER);
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_FLOW_LABEL);
+}
+
+static void mlxsw_sp_mp4_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config)
+{
+ unsigned long *headers = config->headers;
+ unsigned long *fields = config->fields;
+
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_SIP0, 4);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4);
+}
+
+static void
+mlxsw_sp_mp_hash_inner_custom(struct mlxsw_sp_mp_hash_config *config,
+ u32 hash_fields)
+{
+ unsigned long *inner_headers = config->inner_headers;
+ unsigned long *inner_fields = config->inner_fields;
+
+ /* IPv4 Inner */
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV4_EN_TCP_UDP);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP)
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_SIP0, 4);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP)
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV4_DIP0, 4);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO)
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV4_PROTOCOL);
+ /* IPv6 inner */
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, IPV6_EN_TCP_UDP);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_IP) {
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_SIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_SIP8, 8);
+ }
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_IP) {
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_DIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(inner_fields, INNER_IPV6_DIP8, 8);
+ }
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_IP_PROTO)
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_NEXT_HEADER);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_FLOWLABEL)
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_IPV6_FLOW_LABEL);
+ /* L4 inner */
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV4);
+ MLXSW_SP_MP_HASH_HEADER_SET(inner_headers, TCP_UDP_EN_IPV6);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_SRC_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_SPORT);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_DST_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(inner_fields, INNER_TCP_UDP_DPORT);
+}
+
+static void mlxsw_sp_mp4_hash_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_mp_hash_config *config)
+{
+ struct net *net = mlxsw_sp_net(mlxsw_sp);
+ unsigned long *headers = config->headers;
+ unsigned long *fields = config->fields;
+ u32 hash_fields;
+
+ switch (READ_ONCE(net->ipv4.sysctl_fib_multipath_hash_policy)) {
+ case 0:
+ mlxsw_sp_mp4_hash_outer_addr(config);
+ break;
+ case 1:
+ mlxsw_sp_mp4_hash_outer_addr(config);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV4);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV4_PROTOCOL);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
+ break;
+ case 2:
+ /* Outer */
+ mlxsw_sp_mp4_hash_outer_addr(config);
+ /* Inner */
+ mlxsw_sp_mp_hash_inner_l3(config);
+ break;
+ case 3:
+ hash_fields = READ_ONCE(net->ipv4.sysctl_fib_multipath_hash_fields);
+ /* Outer */
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV4_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV4);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP)
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_SIP0, 4);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP)
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV4_DIP0, 4);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV4_PROTOCOL);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
+ /* Inner */
+ mlxsw_sp_mp_hash_inner_custom(config, hash_fields);
+ break;
+ }
+}
+
+static void mlxsw_sp_mp6_hash_outer_addr(struct mlxsw_sp_mp_hash_config *config)
+{
+ unsigned long *headers = config->headers;
+ unsigned long *fields = config->fields;
+
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_SIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_SIP8, 8);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_DIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_DIP8, 8);
+}
+
+static void mlxsw_sp_mp6_hash_init(struct mlxsw_sp *mlxsw_sp,
+ struct mlxsw_sp_mp_hash_config *config)
+{
+ u32 hash_fields = ip6_multipath_hash_fields(mlxsw_sp_net(mlxsw_sp));
+ unsigned long *headers = config->headers;
+ unsigned long *fields = config->fields;
+
+ switch (ip6_multipath_hash_policy(mlxsw_sp_net(mlxsw_sp))) {
+ case 0:
+ mlxsw_sp_mp6_hash_outer_addr(config);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL);
+ break;
+ case 1:
+ mlxsw_sp_mp6_hash_outer_addr(config);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV6);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
+ break;
+ case 2:
+ /* Outer */
+ mlxsw_sp_mp6_hash_outer_addr(config);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER);
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL);
+ /* Inner */
+ mlxsw_sp_mp_hash_inner_l3(config);
+ config->inc_parsing_depth = true;
+ break;
+ case 3:
+ /* Outer */
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_NOT_TCP_NOT_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, IPV6_EN_TCP_UDP);
+ MLXSW_SP_MP_HASH_HEADER_SET(headers, TCP_UDP_EN_IPV6);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_IP) {
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_SIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_SIP8, 8);
+ }
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_IP) {
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_DIP0_7);
+ MLXSW_SP_MP_HASH_FIELD_RANGE_SET(fields, IPV6_DIP8, 8);
+ }
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_IP_PROTO)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_NEXT_HEADER);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_FLOWLABEL)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, IPV6_FLOW_LABEL);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_SRC_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_SPORT);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_DST_PORT)
+ MLXSW_SP_MP_HASH_FIELD_SET(fields, TCP_UDP_DPORT);
+ /* Inner */
+ mlxsw_sp_mp_hash_inner_custom(config, hash_fields);
+ if (hash_fields & FIB_MULTIPATH_HASH_FIELD_INNER_MASK)
+ config->inc_parsing_depth = true;
+ break;
+ }
+}
+
+static int mlxsw_sp_mp_hash_parsing_depth_adjust(struct mlxsw_sp *mlxsw_sp,
+ bool old_inc_parsing_depth,
+ bool new_inc_parsing_depth)
+{
+ int err;
+
+ if (!old_inc_parsing_depth && new_inc_parsing_depth) {
+ err = mlxsw_sp_parsing_depth_inc(mlxsw_sp);
+ if (err)
+ return err;
+ mlxsw_sp->router->inc_parsing_depth = true;
+ } else if (old_inc_parsing_depth && !new_inc_parsing_depth) {
+ mlxsw_sp_parsing_depth_dec(mlxsw_sp);
+ mlxsw_sp->router->inc_parsing_depth = false;
+ }
+
+ return 0;
+}
+
+static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp)
+{
+ bool old_inc_parsing_depth, new_inc_parsing_depth;
+ struct mlxsw_sp_mp_hash_config config = {};
+ char recr2_pl[MLXSW_REG_RECR2_LEN];
+ unsigned long bit;
+ u32 seed;
+ int err;
+
+ seed = jhash(mlxsw_sp->base_mac, sizeof(mlxsw_sp->base_mac), 0);
+ mlxsw_reg_recr2_pack(recr2_pl, seed);
+ mlxsw_sp_mp4_hash_init(mlxsw_sp, &config);
+ mlxsw_sp_mp6_hash_init(mlxsw_sp, &config);
+
+ old_inc_parsing_depth = mlxsw_sp->router->inc_parsing_depth;
+ new_inc_parsing_depth = config.inc_parsing_depth;
+ err = mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp,
+ old_inc_parsing_depth,
+ new_inc_parsing_depth);
+ if (err)
+ return err;
+
+ for_each_set_bit(bit, config.headers, __MLXSW_REG_RECR2_HEADER_CNT)
+ mlxsw_reg_recr2_outer_header_enables_set(recr2_pl, bit, 1);
+ for_each_set_bit(bit, config.fields, __MLXSW_REG_RECR2_FIELD_CNT)
+ mlxsw_reg_recr2_outer_header_fields_enable_set(recr2_pl, bit, 1);
+ for_each_set_bit(bit, config.inner_headers, __MLXSW_REG_RECR2_HEADER_CNT)
+ mlxsw_reg_recr2_inner_header_enables_set(recr2_pl, bit, 1);
+ for_each_set_bit(bit, config.inner_fields, __MLXSW_REG_RECR2_INNER_FIELD_CNT)
+ mlxsw_reg_recr2_inner_header_fields_enable_set(recr2_pl, bit, 1);
+
+ err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(recr2), recr2_pl);
+ if (err)
+ goto err_reg_write;
+
+ return 0;
+
+err_reg_write:
+ mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp, new_inc_parsing_depth,
+ old_inc_parsing_depth);
+ return err;
+}
+
+static void mlxsw_sp_mp_hash_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ bool old_inc_parsing_depth = mlxsw_sp->router->inc_parsing_depth;
+
+ mlxsw_sp_mp_hash_parsing_depth_adjust(mlxsw_sp, old_inc_parsing_depth,
+ false);
+}
+#else
+static int mlxsw_sp_mp_hash_init(struct mlxsw_sp *mlxsw_sp)
+{
+ return 0;
+}
+
+static void mlxsw_sp_mp_hash_fini(struct mlxsw_sp *mlxsw_sp)
+{
+}
+#endif
+
+static int mlxsw_sp_dscp_init(struct mlxsw_sp *mlxsw_sp)
+{
+ char rdpm_pl[MLXSW_REG_RDPM_LEN];
+ unsigned int i;
+
+ MLXSW_REG_ZERO(rdpm, rdpm_pl);
+
+ /* HW is determining switch priority based on DSCP-bits, but the
+ * kernel is still doing that based on the ToS. Since there's a
+ * mismatch in bits we need to make sure to translate the right
+ * value ToS would observe, skipping the 2 least-significant ECN bits.
+ */
+ for (i = 0; i < MLXSW_REG_RDPM_DSCP_ENTRY_REC_MAX_COUNT; i++)
+ mlxsw_reg_rdpm_pack(rdpm_pl, i, rt_tos2priority(i << 2));
+
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rdpm), rdpm_pl);
+}
+
+static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp)
+{
+ struct net *net = mlxsw_sp_net(mlxsw_sp);
+ char rgcr_pl[MLXSW_REG_RGCR_LEN];
+ u64 max_rifs;
+ bool usp;
+
+ if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS))
+ return -EIO;
+ max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
+ usp = READ_ONCE(net->ipv4.sysctl_ip_fwd_update_priority);
+
+ mlxsw_reg_rgcr_pack(rgcr_pl, true, true);
+ mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs);
+ mlxsw_reg_rgcr_usp_set(rgcr_pl, usp);
+ return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
+}
+
+static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ char rgcr_pl[MLXSW_REG_RGCR_LEN];
+
+ mlxsw_reg_rgcr_pack(rgcr_pl, false, false);
+ mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl);
+}
+
+static int mlxsw_sp_lb_rif_init(struct mlxsw_sp *mlxsw_sp)
+{
+ u16 lb_rif_index;
+ int err;
+
+ /* Create a generic loopback RIF associated with the main table
+ * (default VRF). Any table can be used, but the main table exists
+ * anyway, so we do not waste resources.
+ */
+ err = mlxsw_sp_router_ul_rif_get(mlxsw_sp, RT_TABLE_MAIN,
+ &lb_rif_index);
+ if (err)
+ return err;
+
+ mlxsw_sp->router->lb_rif_index = lb_rif_index;
+
+ return 0;
+}
+
+static void mlxsw_sp_lb_rif_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ mlxsw_sp_router_ul_rif_put(mlxsw_sp, mlxsw_sp->router->lb_rif_index);
+}
+
+static int mlxsw_sp1_router_init(struct mlxsw_sp *mlxsw_sp)
+{
+ size_t size_ranges_count = ARRAY_SIZE(mlxsw_sp1_adj_grp_size_ranges);
+
+ mlxsw_sp->router->rif_ops_arr = mlxsw_sp1_rif_ops_arr;
+ mlxsw_sp->router->adj_grp_size_ranges = mlxsw_sp1_adj_grp_size_ranges;
+ mlxsw_sp->router->adj_grp_size_ranges_count = size_ranges_count;
+
+ return 0;
+}
+
+const struct mlxsw_sp_router_ops mlxsw_sp1_router_ops = {
+ .init = mlxsw_sp1_router_init,
+ .ipips_init = mlxsw_sp1_ipips_init,
+};
+
+static int mlxsw_sp2_router_init(struct mlxsw_sp *mlxsw_sp)
+{
+ size_t size_ranges_count = ARRAY_SIZE(mlxsw_sp2_adj_grp_size_ranges);
+
+ mlxsw_sp->router->rif_ops_arr = mlxsw_sp2_rif_ops_arr;
+ mlxsw_sp->router->adj_grp_size_ranges = mlxsw_sp2_adj_grp_size_ranges;
+ mlxsw_sp->router->adj_grp_size_ranges_count = size_ranges_count;
+
+ return 0;
+}
+
+const struct mlxsw_sp_router_ops mlxsw_sp2_router_ops = {
+ .init = mlxsw_sp2_router_init,
+ .ipips_init = mlxsw_sp2_ipips_init,
+};
+
+int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_sp_router *router;
+ int err;
+
+ router = kzalloc(sizeof(*mlxsw_sp->router), GFP_KERNEL);
+ if (!router)
+ return -ENOMEM;
+ mutex_init(&router->lock);
+ mlxsw_sp->router = router;
+ router->mlxsw_sp = mlxsw_sp;
+
+ err = mlxsw_sp->router_ops->init(mlxsw_sp);
+ if (err)
+ goto err_router_ops_init;
+
+ INIT_LIST_HEAD(&mlxsw_sp->router->nh_res_grp_list);
+ INIT_DELAYED_WORK(&mlxsw_sp->router->nh_grp_activity_dw,
+ mlxsw_sp_nh_grp_activity_work);
+ INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_neighs_list);
+ err = __mlxsw_sp_router_init(mlxsw_sp);
+ if (err)
+ goto err_router_init;
+
+ err = mlxsw_sp_rifs_init(mlxsw_sp);
+ if (err)
+ goto err_rifs_init;
+
+ err = mlxsw_sp->router_ops->ipips_init(mlxsw_sp);
+ if (err)
+ goto err_ipips_init;
+
+ err = rhashtable_init(&mlxsw_sp->router->nexthop_ht,
+ &mlxsw_sp_nexthop_ht_params);
+ if (err)
+ goto err_nexthop_ht_init;
+
+ err = rhashtable_init(&mlxsw_sp->router->nexthop_group_ht,
+ &mlxsw_sp_nexthop_group_ht_params);
+ if (err)
+ goto err_nexthop_group_ht_init;
+
+ INIT_LIST_HEAD(&mlxsw_sp->router->nexthop_list);
+ err = mlxsw_sp_lpm_init(mlxsw_sp);
+ if (err)
+ goto err_lpm_init;
+
+ err = mlxsw_sp_mr_init(mlxsw_sp, &mlxsw_sp_mr_tcam_ops);
+ if (err)
+ goto err_mr_init;
+
+ err = mlxsw_sp_vrs_init(mlxsw_sp);
+ if (err)
+ goto err_vrs_init;
+
+ err = mlxsw_sp_lb_rif_init(mlxsw_sp);
+ if (err)
+ goto err_lb_rif_init;
+
+ err = mlxsw_sp_neigh_init(mlxsw_sp);
+ if (err)
+ goto err_neigh_init;
+
+ err = mlxsw_sp_mp_hash_init(mlxsw_sp);
+ if (err)
+ goto err_mp_hash_init;
+
+ err = mlxsw_sp_dscp_init(mlxsw_sp);
+ if (err)
+ goto err_dscp_init;
+
+ router->inetaddr_nb.notifier_call = mlxsw_sp_inetaddr_event;
+ err = register_inetaddr_notifier(&router->inetaddr_nb);
+ if (err)
+ goto err_register_inetaddr_notifier;
+
+ router->inet6addr_nb.notifier_call = mlxsw_sp_inet6addr_event;
+ err = register_inet6addr_notifier(&router->inet6addr_nb);
+ if (err)
+ goto err_register_inet6addr_notifier;
+
+ mlxsw_sp->router->netevent_nb.notifier_call =
+ mlxsw_sp_router_netevent_event;
+ err = register_netevent_notifier(&mlxsw_sp->router->netevent_nb);
+ if (err)
+ goto err_register_netevent_notifier;
+
+ mlxsw_sp->router->nexthop_nb.notifier_call =
+ mlxsw_sp_nexthop_obj_event;
+ err = register_nexthop_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->nexthop_nb,
+ extack);
+ if (err)
+ goto err_register_nexthop_notifier;
+
+ mlxsw_sp->router->fib_nb.notifier_call = mlxsw_sp_router_fib_event;
+ err = register_fib_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->fib_nb,
+ mlxsw_sp_router_fib_dump_flush, extack);
+ if (err)
+ goto err_register_fib_notifier;
+
+ mlxsw_sp->router->netdevice_nb.notifier_call =
+ mlxsw_sp_router_netdevice_event;
+ err = register_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->netdevice_nb);
+ if (err)
+ goto err_register_netdev_notifier;
+
+ return 0;
+
+err_register_netdev_notifier:
+ unregister_fib_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->fib_nb);
+err_register_fib_notifier:
+ unregister_nexthop_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->nexthop_nb);
+err_register_nexthop_notifier:
+ unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb);
+err_register_netevent_notifier:
+ unregister_inet6addr_notifier(&router->inet6addr_nb);
+err_register_inet6addr_notifier:
+ unregister_inetaddr_notifier(&router->inetaddr_nb);
+err_register_inetaddr_notifier:
+ mlxsw_core_flush_owq();
+err_dscp_init:
+ mlxsw_sp_mp_hash_fini(mlxsw_sp);
+err_mp_hash_init:
+ mlxsw_sp_neigh_fini(mlxsw_sp);
+err_neigh_init:
+ mlxsw_sp_lb_rif_fini(mlxsw_sp);
+err_lb_rif_init:
+ mlxsw_sp_vrs_fini(mlxsw_sp);
+err_vrs_init:
+ mlxsw_sp_mr_fini(mlxsw_sp);
+err_mr_init:
+ mlxsw_sp_lpm_fini(mlxsw_sp);
+err_lpm_init:
+ rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
+err_nexthop_group_ht_init:
+ rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
+err_nexthop_ht_init:
+ mlxsw_sp_ipips_fini(mlxsw_sp);
+err_ipips_init:
+ mlxsw_sp_rifs_fini(mlxsw_sp);
+err_rifs_init:
+ __mlxsw_sp_router_fini(mlxsw_sp);
+err_router_init:
+ cancel_delayed_work_sync(&mlxsw_sp->router->nh_grp_activity_dw);
+err_router_ops_init:
+ mutex_destroy(&mlxsw_sp->router->lock);
+ kfree(mlxsw_sp->router);
+ return err;
+}
+
+void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp)
+{
+ unregister_netdevice_notifier_net(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->netdevice_nb);
+ unregister_fib_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->fib_nb);
+ unregister_nexthop_notifier(mlxsw_sp_net(mlxsw_sp),
+ &mlxsw_sp->router->nexthop_nb);
+ unregister_netevent_notifier(&mlxsw_sp->router->netevent_nb);
+ unregister_inet6addr_notifier(&mlxsw_sp->router->inet6addr_nb);
+ unregister_inetaddr_notifier(&mlxsw_sp->router->inetaddr_nb);
+ mlxsw_core_flush_owq();
+ mlxsw_sp_mp_hash_fini(mlxsw_sp);
+ mlxsw_sp_neigh_fini(mlxsw_sp);
+ mlxsw_sp_lb_rif_fini(mlxsw_sp);
+ mlxsw_sp_vrs_fini(mlxsw_sp);
+ mlxsw_sp_mr_fini(mlxsw_sp);
+ mlxsw_sp_lpm_fini(mlxsw_sp);
+ rhashtable_destroy(&mlxsw_sp->router->nexthop_group_ht);
+ rhashtable_destroy(&mlxsw_sp->router->nexthop_ht);
+ mlxsw_sp_ipips_fini(mlxsw_sp);
+ mlxsw_sp_rifs_fini(mlxsw_sp);
+ __mlxsw_sp_router_fini(mlxsw_sp);
+ cancel_delayed_work_sync(&mlxsw_sp->router->nh_grp_activity_dw);
+ mutex_destroy(&mlxsw_sp->router->lock);
+ kfree(mlxsw_sp->router);
+}