Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 297 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h b/drivers/net/ethernet/netronome/nfp/flower/main.h
new file mode 100644
index 000000000..81d941ab8
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h
@@ -0,0 +1,297 @@
+/*
+ * Copyright (C) 2017 Netronome Systems, Inc.
+ *
+ * This software is dual licensed under the GNU General License Version 2,
+ * June 1991 as shown in the file COPYING in the top-level directory of this
+ * source tree or the BSD 2-Clause License provided below.  You have the
+ * option to license this software under the complete terms of either license.
+ *
+ * The BSD 2-Clause License:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      1. Redistributions of source code must retain the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer.
+ *
+ *      2. Redistributions in binary form must reproduce the above
+ *         copyright notice, this list of conditions and the following
+ *         disclaimer in the documentation and/or other materials
+ *         provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef __NFP_FLOWER_H__
+#define __NFP_FLOWER_H__ 1
+
+#include "cmsg.h"
+
+#include <linux/circ_buf.h>
+#include <linux/hashtable.h>
+#include <linux/time64.h>
+#include <linux/types.h>
+#include <net/pkt_cls.h>
+#include <net/tcp.h>
+#include <linux/workqueue.h>
+#include <linux/idr.h>
+
+struct nfp_fl_pre_lag;
+struct net_device;
+struct nfp_app;
+
+#define NFP_FL_STATS_CTX_DONT_CARE	cpu_to_be32(0xffffffff)
+#define NFP_FL_STATS_ENTRY_RS		BIT(20)
+#define NFP_FL_STATS_ELEM_RS		4
+#define NFP_FL_REPEATED_HASH_MAX	BIT(17)
+#define NFP_FLOWER_HASH_BITS		19
+#define NFP_FLOWER_MASK_ENTRY_RS	256
+#define NFP_FLOWER_MASK_ELEMENT_RS	1
+#define NFP_FLOWER_MASK_HASH_BITS	10
+
+#define NFP_FL_META_FLAG_MANAGE_MASK	BIT(7)
+
+#define NFP_FL_MASK_REUSE_TIME_NS	40000
+#define NFP_FL_MASK_ID_LOCATION		1
+
+#define NFP_FL_VXLAN_PORT		4789
+#define NFP_FL_GENEVE_PORT		6081
+
+/* Extra features bitmap. */
+#define NFP_FL_FEATS_GENEVE		BIT(0)
+#define NFP_FL_NBI_MTU_SETTING		BIT(1)
+#define NFP_FL_FEATS_GENEVE_OPT		BIT(2)
+#define NFP_FL_FEATS_VLAN_PCP		BIT(3)
+#define NFP_FL_FEATS_LAG		BIT(31)
+
+struct nfp_fl_mask_id {
+	struct circ_buf mask_id_free_list;
+	ktime_t *last_used;
+	u8 init_unallocated;
+};
+
+struct nfp_fl_stats_id {
+	struct circ_buf free_list;
+	u32 init_unalloc;
+	u8 repeated_em_count;
+};
+
+/**
+ * struct nfp_mtu_conf - manage MTU setting
+ * @portnum:		NFP port number of repr with requested MTU change
+ * @requested_val:	MTU value requested for repr
+ * @ack:		Received ack that MTU has been correctly set
+ * @wait_q:		Wait queue for MTU acknowledgements
+ * @lock:		Lock for setting/reading MTU variables
+ */
+struct nfp_mtu_conf {
+	u32 portnum;
+	unsigned int requested_val;
+	bool ack;
+	wait_queue_head_t wait_q;
+	spinlock_t lock;
+};
+
+/**
+ * struct nfp_fl_lag - Flower APP priv data for link aggregation
+ * @lag_nb:		Notifier to track master/slave events
+ * @work:		Work queue for writing configs to the HW
+ * @lock:		Lock to protect lag_group_list
+ * @group_list:		List of all master/slave groups offloaded
+ * @ida_handle:		IDA to handle group ids
+ * @pkt_num:		Incremented for each config packet sent
+ * @batch_ver:		Incremented for each batch of config packets
+ * @global_inst:	Instance allocator for groups
+ * @rst_cfg:		Marker to reset HW LAG config
+ * @retrans_skbs:	Cmsgs that could not be processed by HW and require
+ *			retransmission
+ */
+struct nfp_fl_lag {
+	struct notifier_block lag_nb;
+	struct delayed_work work;
+	struct mutex lock;
+	struct list_head group_list;
+	struct ida ida_handle;
+	unsigned int pkt_num;
+	unsigned int batch_ver;
+	u8 global_inst;
+	bool rst_cfg;
+	struct sk_buff_head retrans_skbs;
+};
+
+/**
+ * struct nfp_flower_priv - Flower APP per-vNIC priv data
+ * @app:		Back pointer to app
+ * @nn:			Pointer to vNIC
+ * @mask_id_seed:	Seed used for mask hash table
+ * @flower_version:	HW version of flower
+ * @flower_ext_feats:	Bitmap of extra features the HW supports
+ * @stats_ids:		List of free stats ids
+ * @mask_ids:		List of free mask ids
+ * @mask_table:		Hash table used to store masks
+ * @flow_table:		Hash table used to store flower rules
+ * @cmsg_work:		Workqueue for control messages processing
+ * @cmsg_skbs_high:	List of higher priority skbs for control message
+ *			processing
+ * @cmsg_skbs_low:	List of lower priority skbs for control message
+ *			processing
+ * @nfp_mac_off_list:	List of MAC addresses to offload
+ * @nfp_mac_index_list:	List of unique 8-bit indexes for non NFP netdevs
+ * @nfp_ipv4_off_list:	List of IPv4 addresses to offload
+ * @nfp_neigh_off_list:	List of neighbour offloads
+ * @nfp_mac_off_lock:	Lock for the MAC address list
+ * @nfp_mac_index_lock:	Lock for the MAC index list
+ * @nfp_ipv4_off_lock:	Lock for the IPv4 address list
+ * @nfp_neigh_off_lock:	Lock for the neighbour address list
+ * @nfp_mac_off_ids:	IDA to manage id assignment for offloaded macs
+ * @nfp_mac_off_count:	Number of MACs in address list
+ * @nfp_tun_mac_nb:	Notifier to monitor link state
+ * @nfp_tun_neigh_nb:	Notifier to monitor neighbour state
+ * @reify_replies:	atomically stores the number of replies received
+ *			from firmware for repr reify
+ * @reify_wait_queue:	wait queue for repr reify response counting
+ * @mtu_conf:		Configuration of repr MTU value
+ * @nfp_lag:		Link aggregation data block
+ */
+struct nfp_flower_priv {
+	struct nfp_app *app;
+	struct nfp_net *nn;
+	u32 mask_id_seed;
+	u64 flower_version;
+	u64 flower_ext_feats;
+	struct nfp_fl_stats_id stats_ids;
+	struct nfp_fl_mask_id mask_ids;
+	DECLARE_HASHTABLE(mask_table, NFP_FLOWER_MASK_HASH_BITS);
+	DECLARE_HASHTABLE(flow_table, NFP_FLOWER_HASH_BITS);
+	struct work_struct cmsg_work;
+	struct sk_buff_head cmsg_skbs_high;
+	struct sk_buff_head cmsg_skbs_low;
+	struct list_head nfp_mac_off_list;
+	struct list_head nfp_mac_index_list;
+	struct list_head nfp_ipv4_off_list;
+	struct list_head nfp_neigh_off_list;
+	struct mutex nfp_mac_off_lock;
+	struct mutex nfp_mac_index_lock;
+	struct mutex nfp_ipv4_off_lock;
+	spinlock_t nfp_neigh_off_lock;
+	struct ida nfp_mac_off_ids;
+	int nfp_mac_off_count;
+	struct notifier_block nfp_tun_mac_nb;
+	struct notifier_block nfp_tun_neigh_nb;
+	atomic_t reify_replies;
+	wait_queue_head_t reify_wait_queue;
+	struct nfp_mtu_conf mtu_conf;
+	struct nfp_fl_lag nfp_lag;
+};
+
+/**
+ * struct nfp_flower_repr_priv - Flower APP per-repr priv data
+ * @lag_port_flags:	Extended port flags to record lag state of repr
+ */
+struct nfp_flower_repr_priv {
+	unsigned long lag_port_flags;
+};
+
+struct nfp_fl_key_ls {
+	u32 key_layer_two;
+	u8 key_layer;
+	int key_size;
+};
+
+struct nfp_fl_rule_metadata {
+	u8 key_len;
+	u8 mask_len;
+	u8 act_len;
+	u8 flags;
+	__be32 host_ctx_id;
+	__be64 host_cookie __packed;
+	__be64 flow_version __packed;
+	__be32 shortcut;
+};
+
+struct nfp_fl_stats {
+	u64 pkts;
+	u64 bytes;
+	u64 used;
+};
+
+struct nfp_fl_payload {
+	struct nfp_fl_rule_metadata meta;
+	unsigned long tc_flower_cookie;
+	struct hlist_node link;
+	struct rcu_head rcu;
+	spinlock_t lock; /* lock stats */
+	struct nfp_fl_stats stats;
+	__be32 nfp_tun_ipv4_addr;
+	struct net_device *ingress_dev;
+	char *unmasked_data;
+	char *mask_data;
+	char *action_data;
+	bool ingress_offload;
+};
+
+struct nfp_fl_stats_frame {
+	__be32 stats_con_id;
+	__be32 pkt_count;
+	__be64 byte_count;
+	__be64 stats_cookie;
+};
+
+int nfp_flower_metadata_init(struct nfp_app *app);
+void nfp_flower_metadata_cleanup(struct nfp_app *app);
+
+int nfp_flower_setup_tc(struct nfp_app *app, struct net_device *netdev,
+			enum tc_setup_type type, void *type_data);
+int nfp_flower_compile_flow_match(struct tc_cls_flower_offload *flow,
+				  struct nfp_fl_key_ls *key_ls,
+				  struct net_device *netdev,
+				  struct nfp_fl_payload *nfp_flow,
+				  enum nfp_flower_tun_type tun_type);
+int nfp_flower_compile_action(struct nfp_app *app,
+			      struct tc_cls_flower_offload *flow,
+			      struct net_device *netdev,
+			      struct nfp_fl_payload *nfp_flow);
+int nfp_compile_flow_metadata(struct nfp_app *app,
+			      struct tc_cls_flower_offload *flow,
+			      struct nfp_fl_payload *nfp_flow,
+			      struct net_device *netdev);
+int nfp_modify_flow_metadata(struct nfp_app *app,
+			     struct nfp_fl_payload *nfp_flow);
+
+struct nfp_fl_payload *
+nfp_flower_search_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie,
+			   struct net_device *netdev, __be32 host_ctx);
+struct nfp_fl_payload *
+nfp_flower_remove_fl_table(struct nfp_app *app, unsigned long tc_flower_cookie);
+
+void nfp_flower_rx_flow_stats(struct nfp_app *app, struct sk_buff *skb);
+
+int nfp_tunnel_config_start(struct nfp_app *app);
+void nfp_tunnel_config_stop(struct nfp_app *app);
+void nfp_tunnel_write_macs(struct nfp_app *app);
+void nfp_tunnel_del_ipv4_off(struct nfp_app *app, __be32 ipv4);
+void nfp_tunnel_add_ipv4_off(struct nfp_app *app, __be32 ipv4);
+void nfp_tunnel_request_route(struct nfp_app *app, struct sk_buff *skb);
+void nfp_tunnel_keep_alive(struct nfp_app *app, struct sk_buff *skb);
+int nfp_flower_setup_tc_egress_cb(enum tc_setup_type type, void *type_data,
+				  void *cb_priv);
+void nfp_flower_lag_init(struct nfp_fl_lag *lag);
+void nfp_flower_lag_cleanup(struct nfp_fl_lag *lag);
+int nfp_flower_lag_reset(struct nfp_fl_lag *lag);
+bool nfp_flower_lag_unprocessed_msg(struct nfp_app *app, struct sk_buff *skb);
+int nfp_flower_lag_populate_pre_action(struct nfp_app *app,
+				       struct net_device *master,
+				       struct nfp_fl_pre_lag *pre_act);
+int nfp_flower_lag_get_output_id(struct nfp_app *app,
+				 struct net_device *master);
+
+#endif