diff options
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/flower/action.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/flower/action.c | 1307 |
1 files changed, 1307 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c new file mode 100644 index 000000000..2b383d92d --- /dev/null +++ b/drivers/net/ethernet/netronome/nfp/flower/action.c @@ -0,0 +1,1307 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/* Copyright (C) 2017-2018 Netronome Systems, Inc. */ + +#include <linux/bitfield.h> +#include <linux/mpls.h> +#include <net/pkt_cls.h> +#include <net/tc_act/tc_csum.h> +#include <net/tc_act/tc_gact.h> +#include <net/tc_act/tc_mirred.h> +#include <net/tc_act/tc_mpls.h> +#include <net/tc_act/tc_pedit.h> +#include <net/tc_act/tc_vlan.h> +#include <net/tc_act/tc_tunnel_key.h> + +#include "cmsg.h" +#include "main.h" +#include "../nfp_net_repr.h" + +/* The kernel versions of TUNNEL_* are not ABI and therefore vulnerable + * to change. Such changes will break our FW ABI. + */ +#define NFP_FL_TUNNEL_CSUM cpu_to_be16(0x01) +#define NFP_FL_TUNNEL_KEY cpu_to_be16(0x04) +#define NFP_FL_TUNNEL_GENEVE_OPT cpu_to_be16(0x0800) +#define NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS (IP_TUNNEL_INFO_TX | \ + IP_TUNNEL_INFO_IPV6) +#define NFP_FL_SUPPORTED_UDP_TUN_FLAGS (NFP_FL_TUNNEL_CSUM | \ + NFP_FL_TUNNEL_KEY | \ + NFP_FL_TUNNEL_GENEVE_OPT) + +static int +nfp_fl_push_mpls(struct nfp_fl_push_mpls *push_mpls, + const struct flow_action_entry *act, + struct netlink_ext_ack *extack) +{ + size_t act_size = sizeof(struct nfp_fl_push_mpls); + u32 mpls_lse = 0; + + push_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_MPLS; + push_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + /* BOS is optional in the TC action but required for offload. */ + if (act->mpls_push.bos != ACT_MPLS_BOS_NOT_SET) { + mpls_lse |= act->mpls_push.bos << MPLS_LS_S_SHIFT; + } else { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: BOS field must explicitly be set for MPLS push"); + return -EOPNOTSUPP; + } + + /* Leave MPLS TC as a default value of 0 if not explicitly set. */ + if (act->mpls_push.tc != ACT_MPLS_TC_NOT_SET) + mpls_lse |= act->mpls_push.tc << MPLS_LS_TC_SHIFT; + + /* Proto, label and TTL are enforced and verified for MPLS push. */ + mpls_lse |= act->mpls_push.label << MPLS_LS_LABEL_SHIFT; + mpls_lse |= act->mpls_push.ttl << MPLS_LS_TTL_SHIFT; + push_mpls->ethtype = act->mpls_push.proto; + push_mpls->lse = cpu_to_be32(mpls_lse); + + return 0; +} + +static void +nfp_fl_pop_mpls(struct nfp_fl_pop_mpls *pop_mpls, + const struct flow_action_entry *act) +{ + size_t act_size = sizeof(struct nfp_fl_pop_mpls); + + pop_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_POP_MPLS; + pop_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; + pop_mpls->ethtype = act->mpls_pop.proto; +} + +static void +nfp_fl_set_mpls(struct nfp_fl_set_mpls *set_mpls, + const struct flow_action_entry *act) +{ + size_t act_size = sizeof(struct nfp_fl_set_mpls); + u32 mpls_lse = 0, mpls_mask = 0; + + set_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_SET_MPLS; + set_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + if (act->mpls_mangle.label != ACT_MPLS_LABEL_NOT_SET) { + mpls_lse |= act->mpls_mangle.label << MPLS_LS_LABEL_SHIFT; + mpls_mask |= MPLS_LS_LABEL_MASK; + } + if (act->mpls_mangle.tc != ACT_MPLS_TC_NOT_SET) { + mpls_lse |= act->mpls_mangle.tc << MPLS_LS_TC_SHIFT; + mpls_mask |= MPLS_LS_TC_MASK; + } + if (act->mpls_mangle.bos != ACT_MPLS_BOS_NOT_SET) { + mpls_lse |= act->mpls_mangle.bos << MPLS_LS_S_SHIFT; + mpls_mask |= MPLS_LS_S_MASK; + } + if (act->mpls_mangle.ttl) { + mpls_lse |= act->mpls_mangle.ttl << MPLS_LS_TTL_SHIFT; + mpls_mask |= MPLS_LS_TTL_MASK; + } + + set_mpls->lse = cpu_to_be32(mpls_lse); + set_mpls->lse_mask = cpu_to_be32(mpls_mask); +} + +static void nfp_fl_pop_vlan(struct nfp_fl_pop_vlan *pop_vlan) +{ + size_t act_size = sizeof(struct nfp_fl_pop_vlan); + + pop_vlan->head.jump_id = NFP_FL_ACTION_OPCODE_POP_VLAN; + pop_vlan->head.len_lw = act_size >> NFP_FL_LW_SIZ; + pop_vlan->reserved = 0; +} + +static void +nfp_fl_push_vlan(struct nfp_fl_push_vlan *push_vlan, + const struct flow_action_entry *act) +{ + size_t act_size = sizeof(struct nfp_fl_push_vlan); + u16 tmp_push_vlan_tci; + + push_vlan->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_VLAN; + push_vlan->head.len_lw = act_size >> NFP_FL_LW_SIZ; + push_vlan->reserved = 0; + push_vlan->vlan_tpid = act->vlan.proto; + + tmp_push_vlan_tci = + FIELD_PREP(NFP_FL_PUSH_VLAN_PRIO, act->vlan.prio) | + FIELD_PREP(NFP_FL_PUSH_VLAN_VID, act->vlan.vid); + push_vlan->vlan_tci = cpu_to_be16(tmp_push_vlan_tci); +} + +static int +nfp_fl_pre_lag(struct nfp_app *app, const struct flow_action_entry *act, + struct nfp_fl_payload *nfp_flow, int act_len, + struct netlink_ext_ack *extack) +{ + size_t act_size = sizeof(struct nfp_fl_pre_lag); + struct nfp_fl_pre_lag *pre_lag; + struct net_device *out_dev; + int err; + + out_dev = act->dev; + if (!out_dev || !netif_is_lag_master(out_dev)) + return 0; + + if (act_len + act_size > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at LAG action"); + return -EOPNOTSUPP; + } + + /* Pre_lag action must be first on action list. + * If other actions already exist they need to be pushed forward. + */ + if (act_len) + memmove(nfp_flow->action_data + act_size, + nfp_flow->action_data, act_len); + + pre_lag = (struct nfp_fl_pre_lag *)nfp_flow->action_data; + err = nfp_flower_lag_populate_pre_action(app, out_dev, pre_lag, extack); + if (err) + return err; + + pre_lag->head.jump_id = NFP_FL_ACTION_OPCODE_PRE_LAG; + pre_lag->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + nfp_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + return act_size; +} + +static int +nfp_fl_output(struct nfp_app *app, struct nfp_fl_output *output, + const struct flow_action_entry *act, + struct nfp_fl_payload *nfp_flow, + bool last, struct net_device *in_dev, + enum nfp_flower_tun_type tun_type, int *tun_out_cnt, + bool pkt_host, struct netlink_ext_ack *extack) +{ + size_t act_size = sizeof(struct nfp_fl_output); + struct nfp_flower_priv *priv = app->priv; + struct net_device *out_dev; + u16 tmp_flags; + + output->head.jump_id = NFP_FL_ACTION_OPCODE_OUTPUT; + output->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + out_dev = act->dev; + if (!out_dev) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid egress interface for mirred action"); + return -EOPNOTSUPP; + } + + tmp_flags = last ? NFP_FL_OUT_FLAGS_LAST : 0; + + if (tun_type) { + /* Verify the egress netdev matches the tunnel type. */ + if (!nfp_fl_netdev_is_tunnel_type(out_dev, tun_type)) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: egress interface does not match the required tunnel type"); + return -EOPNOTSUPP; + } + + if (*tun_out_cnt) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: cannot offload more than one tunnel mirred output per filter"); + return -EOPNOTSUPP; + } + (*tun_out_cnt)++; + + output->flags = cpu_to_be16(tmp_flags | + NFP_FL_OUT_FLAGS_USE_TUN); + output->port = cpu_to_be32(NFP_FL_PORT_TYPE_TUN | tun_type); + } else if (netif_is_lag_master(out_dev) && + priv->flower_en_feats & NFP_FL_ENABLE_LAG) { + int gid; + + output->flags = cpu_to_be16(tmp_flags); + gid = nfp_flower_lag_get_output_id(app, out_dev); + if (gid < 0) { + NL_SET_ERR_MSG_MOD(extack, "invalid entry: cannot find group id for LAG action"); + return gid; + } + output->port = cpu_to_be32(NFP_FL_LAG_OUT | gid); + } else if (nfp_flower_internal_port_can_offload(app, out_dev)) { + if (!(priv->flower_ext_feats & NFP_FL_FEATS_PRE_TUN_RULES) && + !(priv->flower_ext_feats & NFP_FL_FEATS_DECAP_V2)) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules not supported in loaded firmware"); + return -EOPNOTSUPP; + } + + if (nfp_flow->pre_tun_rule.dev || !pkt_host) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules require single egress dev and ptype HOST action"); + return -EOPNOTSUPP; + } + + nfp_flow->pre_tun_rule.dev = out_dev; + + return 0; + } else { + /* Set action output parameters. */ + output->flags = cpu_to_be16(tmp_flags); + + if (nfp_netdev_is_nfp_repr(in_dev)) { + /* Confirm ingress and egress are on same device. */ + if (!netdev_port_same_parent_id(in_dev, out_dev)) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: ingress and egress interfaces are on different devices"); + return -EOPNOTSUPP; + } + } + + if (!nfp_netdev_is_nfp_repr(out_dev)) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: egress interface is not an nfp port"); + return -EOPNOTSUPP; + } + + output->port = cpu_to_be32(nfp_repr_get_port_id(out_dev)); + if (!output->port) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid port id for egress interface"); + return -EOPNOTSUPP; + } + } + nfp_flow->meta.shortcut = output->port; + + return 0; +} + +static bool +nfp_flower_tun_is_gre(struct flow_rule *rule, int start_idx) +{ + struct flow_action_entry *act = rule->action.entries; + int num_act = rule->action.num_entries; + int act_idx; + + /* Preparse action list for next mirred or redirect action */ + for (act_idx = start_idx + 1; act_idx < num_act; act_idx++) + if (act[act_idx].id == FLOW_ACTION_REDIRECT || + act[act_idx].id == FLOW_ACTION_MIRRED) + return netif_is_gretap(act[act_idx].dev) || + netif_is_ip6gretap(act[act_idx].dev); + + return false; +} + +static enum nfp_flower_tun_type +nfp_fl_get_tun_from_act(struct nfp_app *app, + struct flow_rule *rule, + const struct flow_action_entry *act, int act_idx) +{ + const struct ip_tunnel_info *tun = act->tunnel; + struct nfp_flower_priv *priv = app->priv; + + /* Determine the tunnel type based on the egress netdev + * in the mirred action for tunnels without l4. + */ + if (nfp_flower_tun_is_gre(rule, act_idx)) + return NFP_FL_TUNNEL_GRE; + + switch (tun->key.tp_dst) { + case htons(IANA_VXLAN_UDP_PORT): + return NFP_FL_TUNNEL_VXLAN; + case htons(GENEVE_UDP_PORT): + if (priv->flower_ext_feats & NFP_FL_FEATS_GENEVE) + return NFP_FL_TUNNEL_GENEVE; + fallthrough; + default: + return NFP_FL_TUNNEL_NONE; + } +} + +static struct nfp_fl_pre_tunnel *nfp_fl_pre_tunnel(char *act_data, int act_len) +{ + size_t act_size = sizeof(struct nfp_fl_pre_tunnel); + struct nfp_fl_pre_tunnel *pre_tun_act; + + /* Pre_tunnel action must be first on action list. + * If other actions already exist they need to be pushed forward. + */ + if (act_len) + memmove(act_data + act_size, act_data, act_len); + + pre_tun_act = (struct nfp_fl_pre_tunnel *)act_data; + + memset(pre_tun_act, 0, act_size); + + pre_tun_act->head.jump_id = NFP_FL_ACTION_OPCODE_PRE_TUNNEL; + pre_tun_act->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + return pre_tun_act; +} + +static int +nfp_fl_push_geneve_options(struct nfp_fl_payload *nfp_fl, int *list_len, + const struct flow_action_entry *act, + struct netlink_ext_ack *extack) +{ + struct ip_tunnel_info *ip_tun = (struct ip_tunnel_info *)act->tunnel; + int opt_len, opt_cnt, act_start, tot_push_len; + u8 *src = ip_tunnel_info_opts(ip_tun); + + /* We need to populate the options in reverse order for HW. + * Therefore we go through the options, calculating the + * number of options and the total size, then we populate + * them in reverse order in the action list. + */ + opt_cnt = 0; + tot_push_len = 0; + opt_len = ip_tun->options_len; + while (opt_len > 0) { + struct geneve_opt *opt = (struct geneve_opt *)src; + + opt_cnt++; + if (opt_cnt > NFP_FL_MAX_GENEVE_OPT_CNT) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed number of geneve options exceeded"); + return -EOPNOTSUPP; + } + + tot_push_len += sizeof(struct nfp_fl_push_geneve) + + opt->length * 4; + if (tot_push_len > NFP_FL_MAX_GENEVE_OPT_ACT) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push geneve options"); + return -EOPNOTSUPP; + } + + opt_len -= sizeof(struct geneve_opt) + opt->length * 4; + src += sizeof(struct geneve_opt) + opt->length * 4; + } + + if (*list_len + tot_push_len > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push geneve options"); + return -EOPNOTSUPP; + } + + act_start = *list_len; + *list_len += tot_push_len; + src = ip_tunnel_info_opts(ip_tun); + while (opt_cnt) { + struct geneve_opt *opt = (struct geneve_opt *)src; + struct nfp_fl_push_geneve *push; + size_t act_size, len; + + opt_cnt--; + act_size = sizeof(struct nfp_fl_push_geneve) + opt->length * 4; + tot_push_len -= act_size; + len = act_start + tot_push_len; + + push = (struct nfp_fl_push_geneve *)&nfp_fl->action_data[len]; + push->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_GENEVE; + push->head.len_lw = act_size >> NFP_FL_LW_SIZ; + push->reserved = 0; + push->class = opt->opt_class; + push->type = opt->type; + push->length = opt->length; + memcpy(&push->opt_data, opt->opt_data, opt->length * 4); + + src += sizeof(struct geneve_opt) + opt->length * 4; + } + + return 0; +} + +static int +nfp_fl_set_tun(struct nfp_app *app, struct nfp_fl_set_tun *set_tun, + const struct flow_action_entry *act, + struct nfp_fl_pre_tunnel *pre_tun, + enum nfp_flower_tun_type tun_type, + struct net_device *netdev, struct netlink_ext_ack *extack) +{ + const struct ip_tunnel_info *ip_tun = act->tunnel; + bool ipv6 = ip_tunnel_info_af(ip_tun) == AF_INET6; + size_t act_size = sizeof(struct nfp_fl_set_tun); + struct nfp_flower_priv *priv = app->priv; + u32 tmp_set_ip_tun_type_index = 0; + /* Currently support one pre-tunnel so index is always 0. */ + int pretun_idx = 0; + + if (!IS_ENABLED(CONFIG_IPV6) && ipv6) + return -EOPNOTSUPP; + + if (ipv6 && !(priv->flower_ext_feats & NFP_FL_FEATS_IPV6_TUN)) + return -EOPNOTSUPP; + + BUILD_BUG_ON(NFP_FL_TUNNEL_CSUM != TUNNEL_CSUM || + NFP_FL_TUNNEL_KEY != TUNNEL_KEY || + NFP_FL_TUNNEL_GENEVE_OPT != TUNNEL_GENEVE_OPT); + if (ip_tun->options_len && + (tun_type != NFP_FL_TUNNEL_GENEVE || + !(priv->flower_ext_feats & NFP_FL_FEATS_GENEVE_OPT))) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support geneve options offload"); + return -EOPNOTSUPP; + } + + if (ip_tun->key.tun_flags & ~NFP_FL_SUPPORTED_UDP_TUN_FLAGS) { + NL_SET_ERR_MSG_MOD(extack, + "unsupported offload: loaded firmware does not support tunnel flag offload"); + return -EOPNOTSUPP; + } + + set_tun->head.jump_id = NFP_FL_ACTION_OPCODE_SET_TUNNEL; + set_tun->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + /* Set tunnel type and pre-tunnel index. */ + tmp_set_ip_tun_type_index |= + FIELD_PREP(NFP_FL_TUNNEL_TYPE, tun_type) | + FIELD_PREP(NFP_FL_PRE_TUN_INDEX, pretun_idx); + + set_tun->tun_type_index = cpu_to_be32(tmp_set_ip_tun_type_index); + if (ip_tun->key.tun_flags & NFP_FL_TUNNEL_KEY) + set_tun->tun_id = ip_tun->key.tun_id; + + if (ip_tun->key.ttl) { + set_tun->ttl = ip_tun->key.ttl; +#ifdef CONFIG_IPV6 + } else if (ipv6) { + struct net *net = dev_net(netdev); + struct flowi6 flow = {}; + struct dst_entry *dst; + + flow.daddr = ip_tun->key.u.ipv6.dst; + flow.flowi4_proto = IPPROTO_UDP; + dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &flow, NULL); + if (!IS_ERR(dst)) { + set_tun->ttl = ip6_dst_hoplimit(dst); + dst_release(dst); + } else { + set_tun->ttl = net->ipv6.devconf_all->hop_limit; + } +#endif + } else { + struct net *net = dev_net(netdev); + struct flowi4 flow = {}; + struct rtable *rt; + int err; + + /* Do a route lookup to determine ttl - if fails then use + * default. Note that CONFIG_INET is a requirement of + * CONFIG_NET_SWITCHDEV so must be defined here. + */ + flow.daddr = ip_tun->key.u.ipv4.dst; + flow.flowi4_proto = IPPROTO_UDP; + rt = ip_route_output_key(net, &flow); + err = PTR_ERR_OR_ZERO(rt); + if (!err) { + set_tun->ttl = ip4_dst_hoplimit(&rt->dst); + ip_rt_put(rt); + } else { + set_tun->ttl = READ_ONCE(net->ipv4.sysctl_ip_default_ttl); + } + } + + set_tun->tos = ip_tun->key.tos; + set_tun->tun_flags = ip_tun->key.tun_flags; + + if (tun_type == NFP_FL_TUNNEL_GENEVE) { + set_tun->tun_proto = htons(ETH_P_TEB); + set_tun->tun_len = ip_tun->options_len / 4; + } + + /* Complete pre_tunnel action. */ + if (ipv6) { + pre_tun->flags |= cpu_to_be16(NFP_FL_PRE_TUN_IPV6); + pre_tun->ipv6_dst = ip_tun->key.u.ipv6.dst; + } else { + pre_tun->ipv4_dst = ip_tun->key.u.ipv4.dst; + } + + return 0; +} + +static void nfp_fl_set_helper32(u32 value, u32 mask, u8 *p_exact, u8 *p_mask) +{ + u32 oldvalue = get_unaligned((u32 *)p_exact); + u32 oldmask = get_unaligned((u32 *)p_mask); + + value &= mask; + value |= oldvalue & ~mask; + + put_unaligned(oldmask | mask, (u32 *)p_mask); + put_unaligned(value, (u32 *)p_exact); +} + +static int +nfp_fl_set_eth(const struct flow_action_entry *act, u32 off, + struct nfp_fl_set_eth *set_eth, struct netlink_ext_ack *extack) +{ + u32 exact, mask; + + if (off + 4 > ETH_ALEN * 2) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit ethernet action"); + return -EOPNOTSUPP; + } + + mask = ~act->mangle.mask; + exact = act->mangle.val; + + if (exact & ~mask) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit ethernet action"); + return -EOPNOTSUPP; + } + + nfp_fl_set_helper32(exact, mask, &set_eth->eth_addr_val[off], + &set_eth->eth_addr_mask[off]); + + set_eth->reserved = cpu_to_be16(0); + set_eth->head.jump_id = NFP_FL_ACTION_OPCODE_SET_ETHERNET; + set_eth->head.len_lw = sizeof(*set_eth) >> NFP_FL_LW_SIZ; + + return 0; +} + +struct ipv4_ttl_word { + __u8 ttl; + __u8 protocol; + __sum16 check; +}; + +static int +nfp_fl_set_ip4(const struct flow_action_entry *act, u32 off, + struct nfp_fl_set_ip4_addrs *set_ip_addr, + struct nfp_fl_set_ip4_ttl_tos *set_ip_ttl_tos, + struct netlink_ext_ack *extack) +{ + struct ipv4_ttl_word *ttl_word_mask; + struct ipv4_ttl_word *ttl_word; + struct iphdr *tos_word_mask; + struct iphdr *tos_word; + __be32 exact, mask; + + /* We are expecting tcf_pedit to return a big endian value */ + mask = (__force __be32)~act->mangle.mask; + exact = (__force __be32)act->mangle.val; + + if (exact & ~mask) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 action"); + return -EOPNOTSUPP; + } + + switch (off) { + case offsetof(struct iphdr, daddr): + set_ip_addr->ipv4_dst_mask |= mask; + set_ip_addr->ipv4_dst &= ~mask; + set_ip_addr->ipv4_dst |= exact & mask; + set_ip_addr->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS; + set_ip_addr->head.len_lw = sizeof(*set_ip_addr) >> + NFP_FL_LW_SIZ; + break; + case offsetof(struct iphdr, saddr): + set_ip_addr->ipv4_src_mask |= mask; + set_ip_addr->ipv4_src &= ~mask; + set_ip_addr->ipv4_src |= exact & mask; + set_ip_addr->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_ADDRS; + set_ip_addr->head.len_lw = sizeof(*set_ip_addr) >> + NFP_FL_LW_SIZ; + break; + case offsetof(struct iphdr, ttl): + ttl_word_mask = (struct ipv4_ttl_word *)&mask; + ttl_word = (struct ipv4_ttl_word *)&exact; + + if (ttl_word_mask->protocol || ttl_word_mask->check) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 ttl action"); + return -EOPNOTSUPP; + } + + set_ip_ttl_tos->ipv4_ttl_mask |= ttl_word_mask->ttl; + set_ip_ttl_tos->ipv4_ttl &= ~ttl_word_mask->ttl; + set_ip_ttl_tos->ipv4_ttl |= ttl_word->ttl & ttl_word_mask->ttl; + set_ip_ttl_tos->head.jump_id = + NFP_FL_ACTION_OPCODE_SET_IPV4_TTL_TOS; + set_ip_ttl_tos->head.len_lw = sizeof(*set_ip_ttl_tos) >> + NFP_FL_LW_SIZ; + break; + case round_down(offsetof(struct iphdr, tos), 4): + tos_word_mask = (struct iphdr *)&mask; + tos_word = (struct iphdr *)&exact; + + if (tos_word_mask->version || tos_word_mask->ihl || + tos_word_mask->tot_len) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv4 tos action"); + return -EOPNOTSUPP; + } + + set_ip_ttl_tos->ipv4_tos_mask |= tos_word_mask->tos; + set_ip_ttl_tos->ipv4_tos &= ~tos_word_mask->tos; + set_ip_ttl_tos->ipv4_tos |= tos_word->tos & tos_word_mask->tos; + set_ip_ttl_tos->head.jump_id = + NFP_FL_ACTION_OPCODE_SET_IPV4_TTL_TOS; + set_ip_ttl_tos->head.len_lw = sizeof(*set_ip_ttl_tos) >> + NFP_FL_LW_SIZ; + break; + default: + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of IPv4 header"); + return -EOPNOTSUPP; + } + + return 0; +} + +static void +nfp_fl_set_ip6_helper(int opcode_tag, u8 word, __be32 exact, __be32 mask, + struct nfp_fl_set_ipv6_addr *ip6) +{ + ip6->ipv6[word].mask |= mask; + ip6->ipv6[word].exact &= ~mask; + ip6->ipv6[word].exact |= exact & mask; + + ip6->reserved = cpu_to_be16(0); + ip6->head.jump_id = opcode_tag; + ip6->head.len_lw = sizeof(*ip6) >> NFP_FL_LW_SIZ; +} + +struct ipv6_hop_limit_word { + __be16 payload_len; + u8 nexthdr; + u8 hop_limit; +}; + +static int +nfp_fl_set_ip6_hop_limit_flow_label(u32 off, __be32 exact, __be32 mask, + struct nfp_fl_set_ipv6_tc_hl_fl *ip_hl_fl, + struct netlink_ext_ack *extack) +{ + struct ipv6_hop_limit_word *fl_hl_mask; + struct ipv6_hop_limit_word *fl_hl; + + switch (off) { + case offsetof(struct ipv6hdr, payload_len): + fl_hl_mask = (struct ipv6_hop_limit_word *)&mask; + fl_hl = (struct ipv6_hop_limit_word *)&exact; + + if (fl_hl_mask->nexthdr || fl_hl_mask->payload_len) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 hop limit action"); + return -EOPNOTSUPP; + } + + ip_hl_fl->ipv6_hop_limit_mask |= fl_hl_mask->hop_limit; + ip_hl_fl->ipv6_hop_limit &= ~fl_hl_mask->hop_limit; + ip_hl_fl->ipv6_hop_limit |= fl_hl->hop_limit & + fl_hl_mask->hop_limit; + break; + case round_down(offsetof(struct ipv6hdr, flow_lbl), 4): + if (mask & ~IPV6_FLOWINFO_MASK || + exact & ~IPV6_FLOWINFO_MASK) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 flow info action"); + return -EOPNOTSUPP; + } + + ip_hl_fl->ipv6_label_mask |= mask; + ip_hl_fl->ipv6_label &= ~mask; + ip_hl_fl->ipv6_label |= exact & mask; + break; + } + + ip_hl_fl->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV6_TC_HL_FL; + ip_hl_fl->head.len_lw = sizeof(*ip_hl_fl) >> NFP_FL_LW_SIZ; + + return 0; +} + +static int +nfp_fl_set_ip6(const struct flow_action_entry *act, u32 off, + struct nfp_fl_set_ipv6_addr *ip_dst, + struct nfp_fl_set_ipv6_addr *ip_src, + struct nfp_fl_set_ipv6_tc_hl_fl *ip_hl_fl, + struct netlink_ext_ack *extack) +{ + __be32 exact, mask; + int err = 0; + u8 word; + + /* We are expecting tcf_pedit to return a big endian value */ + mask = (__force __be32)~act->mangle.mask; + exact = (__force __be32)act->mangle.val; + + if (exact & ~mask) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit IPv6 action"); + return -EOPNOTSUPP; + } + + if (off < offsetof(struct ipv6hdr, saddr)) { + err = nfp_fl_set_ip6_hop_limit_flow_label(off, exact, mask, + ip_hl_fl, extack); + } else if (off < offsetof(struct ipv6hdr, daddr)) { + word = (off - offsetof(struct ipv6hdr, saddr)) / sizeof(exact); + nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_SRC, word, + exact, mask, ip_src); + } else if (off < offsetof(struct ipv6hdr, daddr) + + sizeof(struct in6_addr)) { + word = (off - offsetof(struct ipv6hdr, daddr)) / sizeof(exact); + nfp_fl_set_ip6_helper(NFP_FL_ACTION_OPCODE_SET_IPV6_DST, word, + exact, mask, ip_dst); + } else { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of IPv6 header"); + return -EOPNOTSUPP; + } + + return err; +} + +static int +nfp_fl_set_tport(const struct flow_action_entry *act, u32 off, + struct nfp_fl_set_tport *set_tport, int opcode, + struct netlink_ext_ack *extack) +{ + u32 exact, mask; + + if (off) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported section of L4 header"); + return -EOPNOTSUPP; + } + + mask = ~act->mangle.mask; + exact = act->mangle.val; + + if (exact & ~mask) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: invalid pedit L4 action"); + return -EOPNOTSUPP; + } + + nfp_fl_set_helper32(exact, mask, set_tport->tp_port_val, + set_tport->tp_port_mask); + + set_tport->reserved = cpu_to_be16(0); + set_tport->head.jump_id = opcode; + set_tport->head.len_lw = sizeof(*set_tport) >> NFP_FL_LW_SIZ; + + return 0; +} + +static u32 nfp_fl_csum_l4_to_flag(u8 ip_proto) +{ + switch (ip_proto) { + case 0: + /* Filter doesn't force proto match, + * both TCP and UDP will be updated if encountered + */ + return TCA_CSUM_UPDATE_FLAG_TCP | TCA_CSUM_UPDATE_FLAG_UDP; + case IPPROTO_TCP: + return TCA_CSUM_UPDATE_FLAG_TCP; + case IPPROTO_UDP: + return TCA_CSUM_UPDATE_FLAG_UDP; + default: + /* All other protocols will be ignored by FW */ + return 0; + } +} + +struct nfp_flower_pedit_acts { + struct nfp_fl_set_ipv6_addr set_ip6_dst, set_ip6_src; + struct nfp_fl_set_ipv6_tc_hl_fl set_ip6_tc_hl_fl; + struct nfp_fl_set_ip4_ttl_tos set_ip_ttl_tos; + struct nfp_fl_set_ip4_addrs set_ip_addr; + struct nfp_fl_set_tport set_tport; + struct nfp_fl_set_eth set_eth; +}; + +static int +nfp_fl_commit_mangle(struct flow_rule *rule, char *nfp_action, + int *a_len, struct nfp_flower_pedit_acts *set_act, + u32 *csum_updated) +{ + size_t act_size = 0; + u8 ip_proto = 0; + + if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { + struct flow_match_basic match; + + flow_rule_match_basic(rule, &match); + ip_proto = match.key->ip_proto; + } + + if (set_act->set_eth.head.len_lw) { + act_size = sizeof(set_act->set_eth); + memcpy(nfp_action, &set_act->set_eth, act_size); + *a_len += act_size; + } + + if (set_act->set_ip_ttl_tos.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_ip_ttl_tos); + memcpy(nfp_action, &set_act->set_ip_ttl_tos, act_size); + *a_len += act_size; + + /* Hardware will automatically fix IPv4 and TCP/UDP checksum. */ + *csum_updated |= TCA_CSUM_UPDATE_FLAG_IPV4HDR | + nfp_fl_csum_l4_to_flag(ip_proto); + } + + if (set_act->set_ip_addr.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_ip_addr); + memcpy(nfp_action, &set_act->set_ip_addr, act_size); + *a_len += act_size; + + /* Hardware will automatically fix IPv4 and TCP/UDP checksum. */ + *csum_updated |= TCA_CSUM_UPDATE_FLAG_IPV4HDR | + nfp_fl_csum_l4_to_flag(ip_proto); + } + + if (set_act->set_ip6_tc_hl_fl.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_ip6_tc_hl_fl); + memcpy(nfp_action, &set_act->set_ip6_tc_hl_fl, act_size); + *a_len += act_size; + + /* Hardware will automatically fix TCP/UDP checksum. */ + *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); + } + + if (set_act->set_ip6_dst.head.len_lw && + set_act->set_ip6_src.head.len_lw) { + /* TC compiles set src and dst IPv6 address as a single action, + * the hardware requires this to be 2 separate actions. + */ + nfp_action += act_size; + act_size = sizeof(set_act->set_ip6_src); + memcpy(nfp_action, &set_act->set_ip6_src, act_size); + *a_len += act_size; + + act_size = sizeof(set_act->set_ip6_dst); + memcpy(&nfp_action[sizeof(set_act->set_ip6_src)], + &set_act->set_ip6_dst, act_size); + *a_len += act_size; + + /* Hardware will automatically fix TCP/UDP checksum. */ + *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); + } else if (set_act->set_ip6_dst.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_ip6_dst); + memcpy(nfp_action, &set_act->set_ip6_dst, act_size); + *a_len += act_size; + + /* Hardware will automatically fix TCP/UDP checksum. */ + *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); + } else if (set_act->set_ip6_src.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_ip6_src); + memcpy(nfp_action, &set_act->set_ip6_src, act_size); + *a_len += act_size; + + /* Hardware will automatically fix TCP/UDP checksum. */ + *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); + } + if (set_act->set_tport.head.len_lw) { + nfp_action += act_size; + act_size = sizeof(set_act->set_tport); + memcpy(nfp_action, &set_act->set_tport, act_size); + *a_len += act_size; + + /* Hardware will automatically fix TCP/UDP checksum. */ + *csum_updated |= nfp_fl_csum_l4_to_flag(ip_proto); + } + + return 0; +} + +static int +nfp_fl_pedit(const struct flow_action_entry *act, + char *nfp_action, int *a_len, + u32 *csum_updated, struct nfp_flower_pedit_acts *set_act, + struct netlink_ext_ack *extack) +{ + enum flow_action_mangle_base htype; + u32 offset; + + htype = act->mangle.htype; + offset = act->mangle.offset; + + switch (htype) { + case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH: + return nfp_fl_set_eth(act, offset, &set_act->set_eth, extack); + case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4: + return nfp_fl_set_ip4(act, offset, &set_act->set_ip_addr, + &set_act->set_ip_ttl_tos, extack); + case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6: + return nfp_fl_set_ip6(act, offset, &set_act->set_ip6_dst, + &set_act->set_ip6_src, + &set_act->set_ip6_tc_hl_fl, extack); + case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP: + return nfp_fl_set_tport(act, offset, &set_act->set_tport, + NFP_FL_ACTION_OPCODE_SET_TCP, extack); + case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP: + return nfp_fl_set_tport(act, offset, &set_act->set_tport, + NFP_FL_ACTION_OPCODE_SET_UDP, extack); + default: + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pedit on unsupported header"); + return -EOPNOTSUPP; + } +} + +static struct nfp_fl_meter *nfp_fl_meter(char *act_data) +{ + size_t act_size = sizeof(struct nfp_fl_meter); + struct nfp_fl_meter *meter_act; + + meter_act = (struct nfp_fl_meter *)act_data; + + memset(meter_act, 0, act_size); + + meter_act->head.jump_id = NFP_FL_ACTION_OPCODE_METER; + meter_act->head.len_lw = act_size >> NFP_FL_LW_SIZ; + + return meter_act; +} + +static int +nfp_flower_meter_action(struct nfp_app *app, + const struct flow_action_entry *action, + struct nfp_fl_payload *nfp_fl, int *a_len, + struct net_device *netdev, + struct netlink_ext_ack *extack) +{ + struct nfp_fl_meter *fl_meter; + u32 meter_id; + + if (*a_len + sizeof(struct nfp_fl_meter) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, + "unsupported offload:meter action size beyond the allowed maximum"); + return -EOPNOTSUPP; + } + + meter_id = action->hw_index; + if (!nfp_flower_search_meter_entry(app, meter_id)) { + NL_SET_ERR_MSG_MOD(extack, + "can not offload flow table with unsupported police action."); + return -EOPNOTSUPP; + } + + fl_meter = nfp_fl_meter(&nfp_fl->action_data[*a_len]); + *a_len += sizeof(struct nfp_fl_meter); + fl_meter->meter_id = cpu_to_be32(meter_id); + + return 0; +} + +static int +nfp_flower_output_action(struct nfp_app *app, + const struct flow_action_entry *act, + struct nfp_fl_payload *nfp_fl, int *a_len, + struct net_device *netdev, bool last, + enum nfp_flower_tun_type *tun_type, int *tun_out_cnt, + int *out_cnt, u32 *csum_updated, bool pkt_host, + struct netlink_ext_ack *extack) +{ + struct nfp_flower_priv *priv = app->priv; + struct nfp_fl_output *output; + int err, prelag_size; + + /* If csum_updated has not been reset by now, it means HW will + * incorrectly update csums when they are not requested. + */ + if (*csum_updated) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: set actions without updating checksums are not supported"); + return -EOPNOTSUPP; + } + + if (*a_len + sizeof(struct nfp_fl_output) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: mirred output increases action list size beyond the allowed maximum"); + return -EOPNOTSUPP; + } + + output = (struct nfp_fl_output *)&nfp_fl->action_data[*a_len]; + err = nfp_fl_output(app, output, act, nfp_fl, last, netdev, *tun_type, + tun_out_cnt, pkt_host, extack); + if (err) + return err; + + *a_len += sizeof(struct nfp_fl_output); + + if (priv->flower_en_feats & NFP_FL_ENABLE_LAG) { + /* nfp_fl_pre_lag returns -err or size of prelag action added. + * This will be 0 if it is not egressing to a lag dev. + */ + prelag_size = nfp_fl_pre_lag(app, act, nfp_fl, *a_len, extack); + if (prelag_size < 0) { + return prelag_size; + } else if (prelag_size > 0 && (!last || *out_cnt)) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: LAG action has to be last action in action list"); + return -EOPNOTSUPP; + } + + *a_len += prelag_size; + } + (*out_cnt)++; + + return 0; +} + +static int +nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, + struct flow_rule *rule, + struct nfp_fl_payload *nfp_fl, int *a_len, + struct net_device *netdev, + enum nfp_flower_tun_type *tun_type, int *tun_out_cnt, + int *out_cnt, u32 *csum_updated, + struct nfp_flower_pedit_acts *set_act, bool *pkt_host, + struct netlink_ext_ack *extack, int act_idx) +{ + struct nfp_flower_priv *fl_priv = app->priv; + struct nfp_fl_pre_tunnel *pre_tun; + struct nfp_fl_set_tun *set_tun; + struct nfp_fl_push_vlan *psh_v; + struct nfp_fl_push_mpls *psh_m; + struct nfp_fl_pop_vlan *pop_v; + struct nfp_fl_pop_mpls *pop_m; + struct nfp_fl_set_mpls *set_m; + int err; + + switch (act->id) { + case FLOW_ACTION_DROP: + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_DROP); + break; + case FLOW_ACTION_REDIRECT_INGRESS: + case FLOW_ACTION_REDIRECT: + err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev, + true, tun_type, tun_out_cnt, + out_cnt, csum_updated, *pkt_host, + extack); + if (err) + return err; + break; + case FLOW_ACTION_MIRRED_INGRESS: + case FLOW_ACTION_MIRRED: + err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev, + false, tun_type, tun_out_cnt, + out_cnt, csum_updated, *pkt_host, + extack); + if (err) + return err; + break; + case FLOW_ACTION_VLAN_POP: + if (*a_len + + sizeof(struct nfp_fl_pop_vlan) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop vlan"); + return -EOPNOTSUPP; + } + + pop_v = (struct nfp_fl_pop_vlan *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_POPV); + + nfp_fl_pop_vlan(pop_v); + *a_len += sizeof(struct nfp_fl_pop_vlan); + break; + case FLOW_ACTION_VLAN_PUSH: + if (*a_len + + sizeof(struct nfp_fl_push_vlan) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push vlan"); + return -EOPNOTSUPP; + } + + psh_v = (struct nfp_fl_push_vlan *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + nfp_fl_push_vlan(psh_v, act); + *a_len += sizeof(struct nfp_fl_push_vlan); + break; + case FLOW_ACTION_TUNNEL_ENCAP: { + const struct ip_tunnel_info *ip_tun = act->tunnel; + + *tun_type = nfp_fl_get_tun_from_act(app, rule, act, act_idx); + if (*tun_type == NFP_FL_TUNNEL_NONE) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported tunnel type in action list"); + return -EOPNOTSUPP; + } + + if (ip_tun->mode & ~NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported tunnel flags in action list"); + return -EOPNOTSUPP; + } + + /* Pre-tunnel action is required for tunnel encap. + * This checks for next hop entries on NFP. + * If none, the packet falls back before applying other actions. + */ + if (*a_len + sizeof(struct nfp_fl_pre_tunnel) + + sizeof(struct nfp_fl_set_tun) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at tunnel encap"); + return -EOPNOTSUPP; + } + + pre_tun = nfp_fl_pre_tunnel(nfp_fl->action_data, *a_len); + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + *a_len += sizeof(struct nfp_fl_pre_tunnel); + + err = nfp_fl_push_geneve_options(nfp_fl, a_len, act, extack); + if (err) + return err; + + set_tun = (void *)&nfp_fl->action_data[*a_len]; + err = nfp_fl_set_tun(app, set_tun, act, pre_tun, *tun_type, + netdev, extack); + if (err) + return err; + *a_len += sizeof(struct nfp_fl_set_tun); + } + break; + case FLOW_ACTION_TUNNEL_DECAP: + /* Tunnel decap is handled by default so accept action. */ + return 0; + case FLOW_ACTION_MANGLE: + if (nfp_fl_pedit(act, &nfp_fl->action_data[*a_len], + a_len, csum_updated, set_act, extack)) + return -EOPNOTSUPP; + break; + case FLOW_ACTION_CSUM: + /* csum action requests recalc of something we have not fixed */ + if (act->csum_flags & ~*csum_updated) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported csum update action in action list"); + return -EOPNOTSUPP; + } + /* If we will correctly fix the csum we can remove it from the + * csum update list. Which will later be used to check support. + */ + *csum_updated &= ~act->csum_flags; + break; + case FLOW_ACTION_MPLS_PUSH: + if (*a_len + + sizeof(struct nfp_fl_push_mpls) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push MPLS"); + return -EOPNOTSUPP; + } + + psh_m = (struct nfp_fl_push_mpls *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + err = nfp_fl_push_mpls(psh_m, act, extack); + if (err) + return err; + *a_len += sizeof(struct nfp_fl_push_mpls); + break; + case FLOW_ACTION_MPLS_POP: + if (*a_len + + sizeof(struct nfp_fl_pop_mpls) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop MPLS"); + return -EOPNOTSUPP; + } + + pop_m = (struct nfp_fl_pop_mpls *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + nfp_fl_pop_mpls(pop_m, act); + *a_len += sizeof(struct nfp_fl_pop_mpls); + break; + case FLOW_ACTION_MPLS_MANGLE: + if (*a_len + + sizeof(struct nfp_fl_set_mpls) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at set MPLS"); + return -EOPNOTSUPP; + } + + set_m = (struct nfp_fl_set_mpls *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + nfp_fl_set_mpls(set_m, act); + *a_len += sizeof(struct nfp_fl_set_mpls); + break; + case FLOW_ACTION_PTYPE: + /* TC ptype skbedit sets PACKET_HOST for ingress redirect. */ + if (act->ptype != PACKET_HOST) + return -EOPNOTSUPP; + + *pkt_host = true; + break; + case FLOW_ACTION_POLICE: + if (!(fl_priv->flower_ext_feats & NFP_FL_FEATS_QOS_METER)) { + NL_SET_ERR_MSG_MOD(extack, + "unsupported offload: unsupported police action in action list"); + return -EOPNOTSUPP; + } + + err = nfp_flower_meter_action(app, act, nfp_fl, a_len, netdev, + extack); + if (err) + return err; + break; + default: + /* Currently we do not handle any other actions. */ + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported action in action list"); + return -EOPNOTSUPP; + } + + return 0; +} + +static bool nfp_fl_check_mangle_start(struct flow_action *flow_act, + int current_act_idx) +{ + struct flow_action_entry current_act; + struct flow_action_entry prev_act; + + current_act = flow_act->entries[current_act_idx]; + if (current_act.id != FLOW_ACTION_MANGLE) + return false; + + if (current_act_idx == 0) + return true; + + prev_act = flow_act->entries[current_act_idx - 1]; + + return prev_act.id != FLOW_ACTION_MANGLE; +} + +static bool nfp_fl_check_mangle_end(struct flow_action *flow_act, + int current_act_idx) +{ + struct flow_action_entry current_act; + struct flow_action_entry next_act; + + current_act = flow_act->entries[current_act_idx]; + if (current_act.id != FLOW_ACTION_MANGLE) + return false; + + if (current_act_idx == flow_act->num_entries) + return true; + + next_act = flow_act->entries[current_act_idx + 1]; + + return next_act.id != FLOW_ACTION_MANGLE; +} + +int nfp_flower_compile_action(struct nfp_app *app, + struct flow_rule *rule, + struct net_device *netdev, + struct nfp_fl_payload *nfp_flow, + struct netlink_ext_ack *extack) +{ + int act_len, act_cnt, err, tun_out_cnt, out_cnt, i; + struct nfp_flower_pedit_acts set_act; + enum nfp_flower_tun_type tun_type; + struct flow_action_entry *act; + bool pkt_host = false; + u32 csum_updated = 0; + + if (!flow_action_hw_stats_check(&rule->action, extack, + FLOW_ACTION_HW_STATS_DELAYED_BIT)) + return -EOPNOTSUPP; + + memset(nfp_flow->action_data, 0, NFP_FL_MAX_A_SIZ); + nfp_flow->meta.act_len = 0; + tun_type = NFP_FL_TUNNEL_NONE; + act_len = 0; + act_cnt = 0; + tun_out_cnt = 0; + out_cnt = 0; + + flow_action_for_each(i, act, &rule->action) { + if (nfp_fl_check_mangle_start(&rule->action, i)) + memset(&set_act, 0, sizeof(set_act)); + err = nfp_flower_loop_action(app, act, rule, nfp_flow, &act_len, + netdev, &tun_type, &tun_out_cnt, + &out_cnt, &csum_updated, + &set_act, &pkt_host, extack, i); + if (err) + return err; + act_cnt++; + if (nfp_fl_check_mangle_end(&rule->action, i)) + nfp_fl_commit_mangle(rule, + &nfp_flow->action_data[act_len], + &act_len, &set_act, &csum_updated); + } + + /* We optimise when the action list is small, this can unfortunately + * not happen once we have more than one action in the action list. + */ + if (act_cnt > 1) + nfp_flow->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + nfp_flow->meta.act_len = act_len; + + return 0; +} |