Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Oz Shlomo | 1387 | 43.11% | 2 | 5.56% |
Paul Blakey | 606 | 18.84% | 2 | 5.56% |
Yevgeny Kliteynik | 365 | 11.35% | 3 | 8.33% |
Eli Britstein | 361 | 11.22% | 8 | 22.22% |
Yue haibing | 169 | 5.25% | 1 | 2.78% |
Roi Dayan | 67 | 2.08% | 2 | 5.56% |
Eli Cohen | 66 | 2.05% | 4 | 11.11% |
Maor Gottlieb | 40 | 1.24% | 1 | 2.78% |
Rabie Loulou | 34 | 1.06% | 1 | 2.78% |
Vlad Buslov | 26 | 0.81% | 1 | 2.78% |
Pablo Neira Ayuso | 26 | 0.81% | 2 | 5.56% |
Dmytro Linkin | 24 | 0.75% | 1 | 2.78% |
Parav Pandit | 14 | 0.44% | 1 | 2.78% |
Tonghao Zhang | 13 | 0.40% | 2 | 5.56% |
Sabrina Dubroca | 12 | 0.37% | 1 | 2.78% |
David Ahern | 3 | 0.09% | 1 | 2.78% |
Linus Torvalds | 2 | 0.06% | 1 | 2.78% |
Aviv Heller | 1 | 0.03% | 1 | 2.78% |
Florian Fainelli | 1 | 0.03% | 1 | 2.78% |
Total | 3217 | 36 |
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ /* Copyright (c) 2018 Mellanox Technologies. */ #include <net/vxlan.h> #include <net/gre.h> #include <net/geneve.h> #include "en/tc_tun.h" #include "en_tc.h" struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev) { if (netif_is_vxlan(tunnel_dev)) return &vxlan_tunnel; else if (netif_is_geneve(tunnel_dev)) return &geneve_tunnel; else if (netif_is_gretap(tunnel_dev) || netif_is_ip6gretap(tunnel_dev)) return &gre_tunnel; else return NULL; } static int get_route_and_out_devs(struct mlx5e_priv *priv, struct net_device *dev, struct net_device **route_dev, struct net_device **out_dev) { struct net_device *uplink_dev, *uplink_upper, *real_dev; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; bool dst_is_lag_dev; real_dev = is_vlan_dev(dev) ? vlan_dev_real_dev(dev) : dev; uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH); rcu_read_lock(); uplink_upper = netdev_master_upper_dev_get_rcu(uplink_dev); /* mlx5_lag_is_sriov() is a blocking function which can't be called * while holding rcu read lock. Take the net_device for correctness * sake. */ if (uplink_upper) dev_hold(uplink_upper); rcu_read_unlock(); dst_is_lag_dev = (uplink_upper && netif_is_lag_master(uplink_upper) && real_dev == uplink_upper && mlx5_lag_is_sriov(priv->mdev)); if (uplink_upper) dev_put(uplink_upper); /* if the egress device isn't on the same HW e-switch or * it's a LAG device, use the uplink */ *route_dev = dev; if (!netdev_port_same_parent_id(priv->netdev, real_dev) || dst_is_lag_dev || is_vlan_dev(*route_dev)) *out_dev = uplink_dev; else if (mlx5e_eswitch_rep(dev) && mlx5e_is_valid_eswitch_fwd_dev(priv, dev)) *out_dev = *route_dev; else return -EOPNOTSUPP; if (!(mlx5e_eswitch_rep(*out_dev) && mlx5e_is_uplink_rep(netdev_priv(*out_dev)))) return -EOPNOTSUPP; if (mlx5e_eswitch_uplink_rep(priv->netdev) && *out_dev != priv->netdev) return -EOPNOTSUPP; return 0; } static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv, struct net_device *mirred_dev, struct net_device **out_dev, struct net_device **route_dev, struct flowi4 *fl4, struct neighbour **out_n, u8 *out_ttl) { struct neighbour *n; struct rtable *rt; #if IS_ENABLED(CONFIG_INET) struct mlx5_core_dev *mdev = priv->mdev; struct net_device *uplink_dev; int ret; if (mlx5_lag_is_multipath(mdev)) { struct mlx5_eswitch *esw = mdev->priv.eswitch; uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH); fl4->flowi4_oif = uplink_dev->ifindex; } rt = ip_route_output_key(dev_net(mirred_dev), fl4); ret = PTR_ERR_OR_ZERO(rt); if (ret) return ret; if (mlx5_lag_is_multipath(mdev) && rt->rt_gw_family != AF_INET) { ip_rt_put(rt); return -ENETUNREACH; } #else return -EOPNOTSUPP; #endif ret = get_route_and_out_devs(priv, rt->dst.dev, route_dev, out_dev); if (ret < 0) { ip_rt_put(rt); return ret; } if (!(*out_ttl)) *out_ttl = ip4_dst_hoplimit(&rt->dst); n = dst_neigh_lookup(&rt->dst, &fl4->daddr); ip_rt_put(rt); if (!n) return -ENOMEM; *out_n = n; return 0; } static const char *mlx5e_netdev_kind(struct net_device *dev) { if (dev->rtnl_link_ops) return dev->rtnl_link_ops->kind; else return "unknown"; } static int mlx5e_gen_ip_tunnel_header(char buf[], __u8 *ip_proto, struct mlx5e_encap_entry *e) { if (!e->tunnel) { pr_warn("mlx5: Cannot generate tunnel header for this tunnel\n"); return -EOPNOTSUPP; } return e->tunnel->generate_ip_tun_hdr(buf, ip_proto, e); } static char *gen_eth_tnl_hdr(char *buf, struct net_device *dev, struct mlx5e_encap_entry *e, u16 proto) { struct ethhdr *eth = (struct ethhdr *)buf; char *ip; ether_addr_copy(eth->h_dest, e->h_dest); ether_addr_copy(eth->h_source, dev->dev_addr); if (is_vlan_dev(dev)) { struct vlan_hdr *vlan = (struct vlan_hdr *) ((char *)eth + ETH_HLEN); ip = (char *)vlan + VLAN_HLEN; eth->h_proto = vlan_dev_vlan_proto(dev); vlan->h_vlan_TCI = htons(vlan_dev_vlan_id(dev)); vlan->h_vlan_encapsulated_proto = htons(proto); } else { eth->h_proto = htons(proto); ip = (char *)eth + ETH_HLEN; } return ip; } int mlx5e_tc_tun_create_header_ipv4(struct mlx5e_priv *priv, struct net_device *mirred_dev, struct mlx5e_encap_entry *e) { int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size); const struct ip_tunnel_key *tun_key = &e->tun_info->key; struct net_device *out_dev, *route_dev; struct flowi4 fl4 = {}; struct neighbour *n; int ipv4_encap_size; char *encap_header; u8 nud_state, ttl; struct iphdr *ip; int err; /* add the IP fields */ fl4.flowi4_tos = tun_key->tos; fl4.daddr = tun_key->u.ipv4.dst; fl4.saddr = tun_key->u.ipv4.src; ttl = tun_key->ttl; err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev, &route_dev, &fl4, &n, &ttl); if (err) return err; ipv4_encap_size = (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) + sizeof(struct iphdr) + e->tunnel->calc_hlen(e); if (max_encap_size < ipv4_encap_size) { mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n", ipv4_encap_size, max_encap_size); err = -EOPNOTSUPP; goto release_neigh; } encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL); if (!encap_header) { err = -ENOMEM; goto release_neigh; } /* used by mlx5e_detach_encap to lookup a neigh hash table * entry in the neigh hash table when a user deletes a rule */ e->m_neigh.dev = n->dev; e->m_neigh.family = n->ops->family; memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len); e->out_dev = out_dev; e->route_dev = route_dev; /* It's important to add the neigh to the hash table before checking * the neigh validity state. So if we'll get a notification, in case the * neigh changes it's validity state, we would find the relevant neigh * in the hash. */ err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e); if (err) goto free_encap; read_lock_bh(&n->lock); nud_state = n->nud_state; ether_addr_copy(e->h_dest, n->ha); read_unlock_bh(&n->lock); /* add ethernet header */ ip = (struct iphdr *)gen_eth_tnl_hdr(encap_header, route_dev, e, ETH_P_IP); /* add ip header */ ip->tos = tun_key->tos; ip->version = 0x4; ip->ihl = 0x5; ip->ttl = ttl; ip->daddr = fl4.daddr; ip->saddr = fl4.saddr; /* add tunneling protocol header */ err = mlx5e_gen_ip_tunnel_header((char *)ip + sizeof(struct iphdr), &ip->protocol, e); if (err) goto destroy_neigh_entry; e->encap_size = ipv4_encap_size; e->encap_header = encap_header; if (!(nud_state & NUD_VALID)) { neigh_event_send(n, NULL); /* the encap entry will be made valid on neigh update event * and not used before that. */ goto release_neigh; } e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev, e->reformat_type, ipv4_encap_size, encap_header, MLX5_FLOW_NAMESPACE_FDB); if (IS_ERR(e->pkt_reformat)) { err = PTR_ERR(e->pkt_reformat); goto destroy_neigh_entry; } e->flags |= MLX5_ENCAP_ENTRY_VALID; mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev)); neigh_release(n); return err; destroy_neigh_entry: mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e); free_encap: kfree(encap_header); release_neigh: neigh_release(n); return err; } #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6) static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv, struct net_device *mirred_dev, struct net_device **out_dev, struct net_device **route_dev, struct flowi6 *fl6, struct neighbour **out_n, u8 *out_ttl) { struct dst_entry *dst; struct neighbour *n; int ret; dst = ipv6_stub->ipv6_dst_lookup_flow(dev_net(mirred_dev), NULL, fl6, NULL); if (IS_ERR(dst)) return PTR_ERR(dst); if (!(*out_ttl)) *out_ttl = ip6_dst_hoplimit(dst); ret = get_route_and_out_devs(priv, dst->dev, route_dev, out_dev); if (ret < 0) { dst_release(dst); return ret; } n = dst_neigh_lookup(dst, &fl6->daddr); dst_release(dst); if (!n) return -ENOMEM; *out_n = n; return 0; } int mlx5e_tc_tun_create_header_ipv6(struct mlx5e_priv *priv, struct net_device *mirred_dev, struct mlx5e_encap_entry *e) { int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size); const struct ip_tunnel_key *tun_key = &e->tun_info->key; struct net_device *out_dev, *route_dev; struct flowi6 fl6 = {}; struct ipv6hdr *ip6h; struct neighbour *n = NULL; int ipv6_encap_size; char *encap_header; u8 nud_state, ttl; int err; ttl = tun_key->ttl; fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label); fl6.daddr = tun_key->u.ipv6.dst; fl6.saddr = tun_key->u.ipv6.src; err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev, &route_dev, &fl6, &n, &ttl); if (err) return err; ipv6_encap_size = (is_vlan_dev(route_dev) ? VLAN_ETH_HLEN : ETH_HLEN) + sizeof(struct ipv6hdr) + e->tunnel->calc_hlen(e); if (max_encap_size < ipv6_encap_size) { mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n", ipv6_encap_size, max_encap_size); err = -EOPNOTSUPP; goto release_neigh; } encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL); if (!encap_header) { err = -ENOMEM; goto release_neigh; } /* used by mlx5e_detach_encap to lookup a neigh hash table * entry in the neigh hash table when a user deletes a rule */ e->m_neigh.dev = n->dev; e->m_neigh.family = n->ops->family; memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len); e->out_dev = out_dev; e->route_dev = route_dev; /* It's importent to add the neigh to the hash table before checking * the neigh validity state. So if we'll get a notification, in case the * neigh changes it's validity state, we would find the relevant neigh * in the hash. */ err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e); if (err) goto free_encap; read_lock_bh(&n->lock); nud_state = n->nud_state; ether_addr_copy(e->h_dest, n->ha); read_unlock_bh(&n->lock); /* add ethernet header */ ip6h = (struct ipv6hdr *)gen_eth_tnl_hdr(encap_header, route_dev, e, ETH_P_IPV6); /* add ip header */ ip6_flow_hdr(ip6h, tun_key->tos, 0); /* the HW fills up ipv6 payload len */ ip6h->hop_limit = ttl; ip6h->daddr = fl6.daddr; ip6h->saddr = fl6.saddr; /* add tunneling protocol header */ err = mlx5e_gen_ip_tunnel_header((char *)ip6h + sizeof(struct ipv6hdr), &ip6h->nexthdr, e); if (err) goto destroy_neigh_entry; e->encap_size = ipv6_encap_size; e->encap_header = encap_header; if (!(nud_state & NUD_VALID)) { neigh_event_send(n, NULL); /* the encap entry will be made valid on neigh update event * and not used before that. */ goto release_neigh; } e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev, e->reformat_type, ipv6_encap_size, encap_header, MLX5_FLOW_NAMESPACE_FDB); if (IS_ERR(e->pkt_reformat)) { err = PTR_ERR(e->pkt_reformat); goto destroy_neigh_entry; } e->flags |= MLX5_ENCAP_ENTRY_VALID; mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev)); neigh_release(n); return err; destroy_neigh_entry: mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e); free_encap: kfree(encap_header); release_neigh: neigh_release(n); return err; } #endif bool mlx5e_tc_tun_device_to_offload(struct mlx5e_priv *priv, struct net_device *netdev) { struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(netdev); if (tunnel && tunnel->can_offload(priv)) return true; else return false; } int mlx5e_tc_tun_init_encap_attr(struct net_device *tunnel_dev, struct mlx5e_priv *priv, struct mlx5e_encap_entry *e, struct netlink_ext_ack *extack) { struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(tunnel_dev); if (!tunnel) { e->reformat_type = -1; return -EOPNOTSUPP; } return tunnel->init_encap_attr(tunnel_dev, priv, e, extack); } int mlx5e_tc_tun_parse(struct net_device *filter_dev, struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, u8 *match_level) { struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(filter_dev); struct flow_rule *rule = flow_cls_offload_flow_rule(f); void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); struct netlink_ext_ack *extack = f->common.extack; int err = 0; if (!tunnel) { netdev_warn(priv->netdev, "decapsulation offload is not supported for %s net device\n", mlx5e_netdev_kind(filter_dev)); err = -EOPNOTSUPP; goto out; } *match_level = tunnel->match_level; if (tunnel->parse_udp_ports) { err = tunnel->parse_udp_ports(priv, spec, f, headers_c, headers_v); if (err) goto out; } if (tunnel->parse_tunnel) { err = tunnel->parse_tunnel(priv, spec, f, headers_c, headers_v); if (err) goto out; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL)) { struct flow_match_control match; u16 addr_type; flow_rule_match_enc_control(rule, &match); addr_type = match.key->addr_type; /* For tunnel addr_type used same key id`s as for non-tunnel */ if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { struct flow_match_ipv4_addrs match; flow_rule_match_enc_ipv4_addrs(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv4_layout.ipv4, ntohl(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv4_layout.ipv4, ntohl(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv4_layout.ipv4, ntohl(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv4_layout.ipv4, ntohl(match.key->dst)); MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP); } else if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { struct flow_match_ipv6_addrs match; flow_rule_match_enc_ipv6_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6); } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { struct flow_match_ip match; flow_rule_match_enc_ip(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, match.mask->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, match.key->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, match.mask->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, match.key->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, match.mask->ttl); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, match.key->ttl); if (match.mask->ttl && !MLX5_CAP_ESW_FLOWTABLE_FDB (priv->mdev, ft_field_support.outer_ipv4_ttl)) { NL_SET_ERR_MSG_MOD(extack, "Matching on TTL is not supported"); err = -EOPNOTSUPP; goto out; } } /* Enforce DMAC when offloading incoming tunneled flows. * Flow counters require a match on the DMAC. */ MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16); MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dmac_47_16), priv->netdev->dev_addr); /* let software handle IP fragments */ MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0); return 0; out: return err; } int mlx5e_tc_tun_parse_udp_ports(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, void *headers_c, void *headers_v) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct flow_match_ports enc_ports; /* Full udp dst port must be given */ if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS)) { NL_SET_ERR_MSG_MOD(extack, "UDP tunnel decap filter must include enc_dst_port condition"); netdev_warn(priv->netdev, "UDP tunnel decap filter must include enc_dst_port condition\n"); return -EOPNOTSUPP; } flow_rule_match_enc_ports(rule, &enc_ports); if (memchr_inv(&enc_ports.mask->dst, 0xff, sizeof(enc_ports.mask->dst))) { NL_SET_ERR_MSG_MOD(extack, "UDP tunnel decap filter must match enc_dst_port fully"); netdev_warn(priv->netdev, "UDP tunnel decap filter must match enc_dst_port fully\n"); return -EOPNOTSUPP; } /* match on UDP protocol and dst port number */ MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP); MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport, ntohs(enc_ports.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, ntohs(enc_ports.key->dst)); /* UDP src port on outer header is generated by HW, * so it is probably a bad idea to request matching it. * Nonetheless, it is allowed. */ MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport, ntohs(enc_ports.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport, ntohs(enc_ports.key->src)); return 0; }
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