/* * Copyright (c) 2016 Mellanox Technologies, Ltd. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include "dpif.h" #include "hash.h" #include "openvswitch/hmap.h" #include "openvswitch/match.h" #include "openvswitch/ofpbuf.h" #include "openvswitch/thread.h" #include "openvswitch/types.h" #include "openvswitch/util.h" #include "openvswitch/vlog.h" #include "netdev-linux.h" #include "netdev-offload-provider.h" #include "netdev-provider.h" #include "netlink.h" #include "netlink-socket.h" #include "odp-netlink.h" #include "odp-util.h" #include "tc.h" #include "unaligned.h" #include "util.h" #include "dpif-provider.h" VLOG_DEFINE_THIS_MODULE(netdev_offload_tc); static struct vlog_rate_limit error_rl = VLOG_RATE_LIMIT_INIT(60, 5); static struct hmap ufid_to_tc = HMAP_INITIALIZER(&ufid_to_tc); static struct hmap tc_to_ufid = HMAP_INITIALIZER(&tc_to_ufid); static bool multi_mask_per_prio = false; static bool block_support = false; struct netlink_field { int offset; int flower_offset; int size; }; static bool is_internal_port(const char *type) { return !strcmp(type, "internal"); } static enum tc_qdisc_hook get_tc_qdisc_hook(struct netdev *netdev) { return is_internal_port(netdev_get_type(netdev)) ? TC_EGRESS : TC_INGRESS; } static struct netlink_field set_flower_map[][4] = { [OVS_KEY_ATTR_IPV4] = { { offsetof(struct ovs_key_ipv4, ipv4_src), offsetof(struct tc_flower_key, ipv4.ipv4_src), MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_src) }, { offsetof(struct ovs_key_ipv4, ipv4_dst), offsetof(struct tc_flower_key, ipv4.ipv4_dst), MEMBER_SIZEOF(struct tc_flower_key, ipv4.ipv4_dst) }, { offsetof(struct ovs_key_ipv4, ipv4_ttl), offsetof(struct tc_flower_key, ipv4.rewrite_ttl), MEMBER_SIZEOF(struct tc_flower_key, ipv4.rewrite_ttl) }, { offsetof(struct ovs_key_ipv4, ipv4_tos), offsetof(struct tc_flower_key, ipv4.rewrite_tos), MEMBER_SIZEOF(struct tc_flower_key, ipv4.rewrite_tos) }, }, [OVS_KEY_ATTR_IPV6] = { { offsetof(struct ovs_key_ipv6, ipv6_src), offsetof(struct tc_flower_key, ipv6.ipv6_src), MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_src) }, { offsetof(struct ovs_key_ipv6, ipv6_dst), offsetof(struct tc_flower_key, ipv6.ipv6_dst), MEMBER_SIZEOF(struct tc_flower_key, ipv6.ipv6_dst) }, { offsetof(struct ovs_key_ipv6, ipv6_hlimit), offsetof(struct tc_flower_key, ipv6.rewrite_hlimit), MEMBER_SIZEOF(struct tc_flower_key, ipv6.rewrite_hlimit) }, { offsetof(struct ovs_key_ipv6, ipv6_tclass), offsetof(struct tc_flower_key, ipv6.rewrite_tclass), MEMBER_SIZEOF(struct tc_flower_key, ipv6.rewrite_tclass) }, }, [OVS_KEY_ATTR_ETHERNET] = { { offsetof(struct ovs_key_ethernet, eth_src), offsetof(struct tc_flower_key, src_mac), MEMBER_SIZEOF(struct tc_flower_key, src_mac) }, { offsetof(struct ovs_key_ethernet, eth_dst), offsetof(struct tc_flower_key, dst_mac), MEMBER_SIZEOF(struct tc_flower_key, dst_mac) }, }, [OVS_KEY_ATTR_ETHERTYPE] = { { 0, offsetof(struct tc_flower_key, eth_type), MEMBER_SIZEOF(struct tc_flower_key, eth_type) }, }, [OVS_KEY_ATTR_TCP] = { { offsetof(struct ovs_key_tcp, tcp_src), offsetof(struct tc_flower_key, tcp_src), MEMBER_SIZEOF(struct tc_flower_key, tcp_src) }, { offsetof(struct ovs_key_tcp, tcp_dst), offsetof(struct tc_flower_key, tcp_dst), MEMBER_SIZEOF(struct tc_flower_key, tcp_dst) }, }, [OVS_KEY_ATTR_UDP] = { { offsetof(struct ovs_key_udp, udp_src), offsetof(struct tc_flower_key, udp_src), MEMBER_SIZEOF(struct tc_flower_key, udp_src) }, { offsetof(struct ovs_key_udp, udp_dst), offsetof(struct tc_flower_key, udp_dst), MEMBER_SIZEOF(struct tc_flower_key, udp_dst) }, }, }; static struct ovs_mutex ufid_lock = OVS_MUTEX_INITIALIZER; /** * struct ufid_tc_data - data entry for ufid-tc hashmaps. * @ufid_to_tc_node: Element in @ufid_to_tc hash table by ufid key. * @tc_to_ufid_node: Element in @tc_to_ufid hash table by tcf_id key. * @ufid: ufid assigned to the flow * @id: tc filter id (tcf_id) * @netdev: netdev associated with the tc rule */ struct ufid_tc_data { struct hmap_node ufid_to_tc_node; struct hmap_node tc_to_ufid_node; ovs_u128 ufid; struct tcf_id id; struct netdev *netdev; }; static void del_ufid_tc_mapping_unlocked(const ovs_u128 *ufid) { size_t ufid_hash = hash_bytes(ufid, sizeof *ufid, 0); struct ufid_tc_data *data; HMAP_FOR_EACH_WITH_HASH (data, ufid_to_tc_node, ufid_hash, &ufid_to_tc) { if (ovs_u128_equals(*ufid, data->ufid)) { break; } } if (!data) { return; } hmap_remove(&ufid_to_tc, &data->ufid_to_tc_node); hmap_remove(&tc_to_ufid, &data->tc_to_ufid_node); netdev_close(data->netdev); free(data); } /* Remove matching ufid entry from ufid-tc hashmaps. */ static void del_ufid_tc_mapping(const ovs_u128 *ufid) { ovs_mutex_lock(&ufid_lock); del_ufid_tc_mapping_unlocked(ufid); ovs_mutex_unlock(&ufid_lock); } /* Wrapper function to delete filter and ufid tc mapping */ static int del_filter_and_ufid_mapping(struct tcf_id *id, const ovs_u128 *ufid) { int err; err = tc_del_filter(id); if (!err) { del_ufid_tc_mapping(ufid); } return err; } /* Add ufid entry to ufid_to_tc hashmap. */ static void add_ufid_tc_mapping(struct netdev *netdev, const ovs_u128 *ufid, struct tcf_id *id) { struct ufid_tc_data *new_data = xzalloc(sizeof *new_data); size_t ufid_hash = hash_bytes(ufid, sizeof *ufid, 0); size_t tc_hash; tc_hash = hash_int(hash_int(id->prio, id->handle), id->ifindex); tc_hash = hash_int(id->chain, tc_hash); new_data->ufid = *ufid; new_data->id = *id; new_data->netdev = netdev_ref(netdev); ovs_mutex_lock(&ufid_lock); hmap_insert(&ufid_to_tc, &new_data->ufid_to_tc_node, ufid_hash); hmap_insert(&tc_to_ufid, &new_data->tc_to_ufid_node, tc_hash); ovs_mutex_unlock(&ufid_lock); } /* Get tc id from ufid_to_tc hashmap. * * Returns 0 if successful and fills id. * Otherwise returns the error. */ static int get_ufid_tc_mapping(const ovs_u128 *ufid, struct tcf_id *id) { size_t ufid_hash = hash_bytes(ufid, sizeof *ufid, 0); struct ufid_tc_data *data; ovs_mutex_lock(&ufid_lock); HMAP_FOR_EACH_WITH_HASH (data, ufid_to_tc_node, ufid_hash, &ufid_to_tc) { if (ovs_u128_equals(*ufid, data->ufid)) { *id = data->id; ovs_mutex_unlock(&ufid_lock); return 0; } } ovs_mutex_unlock(&ufid_lock); return ENOENT; } /* Find ufid entry in ufid_to_tc hashmap using tcf_id id. * The result is saved in ufid. * * Returns true on success. */ static bool find_ufid(struct netdev *netdev, struct tcf_id *id, ovs_u128 *ufid) { struct ufid_tc_data *data; size_t tc_hash; tc_hash = hash_int(hash_int(id->prio, id->handle), id->ifindex); tc_hash = hash_int(id->chain, tc_hash); ovs_mutex_lock(&ufid_lock); HMAP_FOR_EACH_WITH_HASH (data, tc_to_ufid_node, tc_hash, &tc_to_ufid) { if (netdev == data->netdev && is_tcf_id_eq(&data->id, id)) { *ufid = data->ufid; break; } } ovs_mutex_unlock(&ufid_lock); return (data != NULL); } struct prio_map_data { struct hmap_node node; struct tc_flower_key mask; ovs_be16 protocol; uint16_t prio; }; /* Get free prio for tc flower * If prio is already allocated for mask/eth_type combination then return it. * If not assign new prio. * * Return prio on success or 0 if we are out of prios. */ static uint16_t get_prio_for_tc_flower(struct tc_flower *flower) { static struct hmap prios = HMAP_INITIALIZER(&prios); static struct ovs_mutex prios_lock = OVS_MUTEX_INITIALIZER; static uint16_t last_prio = TC_RESERVED_PRIORITY_MAX; size_t key_len = sizeof(struct tc_flower_key); size_t hash = hash_int((OVS_FORCE uint32_t) flower->key.eth_type, 0); struct prio_map_data *data; struct prio_map_data *new_data; if (!multi_mask_per_prio) { hash = hash_bytes(&flower->mask, key_len, hash); } /* We can use the same prio for same mask/eth combination but must have * different prio if not. Flower classifier will reject same prio for * different mask combination unless multi mask per prio is supported. */ ovs_mutex_lock(&prios_lock); HMAP_FOR_EACH_WITH_HASH (data, node, hash, &prios) { if ((multi_mask_per_prio || !memcmp(&flower->mask, &data->mask, key_len)) && data->protocol == flower->key.eth_type) { ovs_mutex_unlock(&prios_lock); return data->prio; } } if (last_prio == UINT16_MAX) { /* last_prio can overflow if there will be many different kinds of * flows which shouldn't happen organically. */ ovs_mutex_unlock(&prios_lock); return 0; } new_data = xzalloc(sizeof *new_data); memcpy(&new_data->mask, &flower->mask, key_len); new_data->prio = ++last_prio; new_data->protocol = flower->key.eth_type; hmap_insert(&prios, &new_data->node, hash); ovs_mutex_unlock(&prios_lock); return new_data->prio; } static uint32_t get_block_id_from_netdev(struct netdev *netdev) { if (block_support) { return netdev_get_block_id(netdev); } return 0; } static int netdev_tc_flow_flush(struct netdev *netdev) { struct ufid_tc_data *data, *next; int err; ovs_mutex_lock(&ufid_lock); HMAP_FOR_EACH_SAFE (data, next, tc_to_ufid_node, &tc_to_ufid) { if (data->netdev != netdev) { continue; } err = tc_del_filter(&data->id); if (!err) { del_ufid_tc_mapping_unlocked(&data->ufid); } } ovs_mutex_unlock(&ufid_lock); return 0; } static int netdev_tc_flow_dump_create(struct netdev *netdev, struct netdev_flow_dump **dump_out, bool terse) { enum tc_qdisc_hook hook = get_tc_qdisc_hook(netdev); struct netdev_flow_dump *dump; uint32_t block_id = 0; struct tcf_id id; int prio = 0; int ifindex; ifindex = netdev_get_ifindex(netdev); if (ifindex < 0) { VLOG_ERR_RL(&error_rl, "dump_create: failed to get ifindex for %s: %s", netdev_get_name(netdev), ovs_strerror(-ifindex)); return -ifindex; } block_id = get_block_id_from_netdev(netdev); dump = xzalloc(sizeof *dump); dump->nl_dump = xzalloc(sizeof *dump->nl_dump); dump->netdev = netdev_ref(netdev); dump->terse = terse; id = tc_make_tcf_id(ifindex, block_id, prio, hook); tc_dump_flower_start(&id, dump->nl_dump, terse); *dump_out = dump; return 0; } static int netdev_tc_flow_dump_destroy(struct netdev_flow_dump *dump) { nl_dump_done(dump->nl_dump); netdev_close(dump->netdev); free(dump->nl_dump); free(dump); return 0; } static void parse_flower_rewrite_to_netlink_action(struct ofpbuf *buf, struct tc_flower *flower) { char *mask = (char *) &flower->rewrite.mask; char *data = (char *) &flower->rewrite.key; for (int type = 0; type < ARRAY_SIZE(set_flower_map); type++) { char *put = NULL; size_t nested = 0; int len = ovs_flow_key_attr_lens[type].len; if (len <= 0) { continue; } for (int j = 0; j < ARRAY_SIZE(set_flower_map[type]); j++) { struct netlink_field *f = &set_flower_map[type][j]; if (!f->size) { break; } if (!is_all_zeros(mask + f->flower_offset, f->size)) { if (!put) { nested = nl_msg_start_nested(buf, OVS_ACTION_ATTR_SET_MASKED); put = nl_msg_put_unspec_zero(buf, type, len * 2); } memcpy(put + f->offset, data + f->flower_offset, f->size); memcpy(put + len + f->offset, mask + f->flower_offset, f->size); } } if (put) { nl_msg_end_nested(buf, nested); } } } static void parse_tc_flower_geneve_opts(struct tc_action *action, struct ofpbuf *buf) { int tun_opt_len = action->encap.data.present.len; size_t geneve_off; int idx = 0; if (!tun_opt_len) { return; } geneve_off = nl_msg_start_nested(buf, OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS); while (tun_opt_len) { struct geneve_opt *opt; opt = &action->encap.data.opts.gnv[idx]; nl_msg_put(buf, opt, sizeof(struct geneve_opt) + opt->length * 4); idx += sizeof(struct geneve_opt) / 4 + opt->length; tun_opt_len -= sizeof(struct geneve_opt) + opt->length * 4; } nl_msg_end_nested(buf, geneve_off); } static void flower_tun_opt_to_match(struct match *match, struct tc_flower *flower) { struct geneve_opt *opt, *opt_mask; int len, cnt = 0; memcpy(match->flow.tunnel.metadata.opts.gnv, flower->key.tunnel.metadata.opts.gnv, flower->key.tunnel.metadata.present.len); match->flow.tunnel.metadata.present.len = flower->key.tunnel.metadata.present.len; match->flow.tunnel.flags |= FLOW_TNL_F_UDPIF; memcpy(match->wc.masks.tunnel.metadata.opts.gnv, flower->mask.tunnel.metadata.opts.gnv, flower->mask.tunnel.metadata.present.len); len = flower->key.tunnel.metadata.present.len; while (len) { opt = &match->flow.tunnel.metadata.opts.gnv[cnt]; opt_mask = &match->wc.masks.tunnel.metadata.opts.gnv[cnt]; opt_mask->length = 0x1f; cnt += sizeof(struct geneve_opt) / 4 + opt->length; len -= sizeof(struct geneve_opt) + opt->length * 4; } match->wc.masks.tunnel.metadata.present.len = flower->mask.tunnel.metadata.present.len; match->wc.masks.tunnel.flags |= FLOW_TNL_F_UDPIF; } static void parse_tc_flower_to_stats(struct tc_flower *flower, struct dpif_flow_stats *stats) { if (!stats) { return; } memset(stats, 0, sizeof *stats); stats->n_packets = get_32aligned_u64(&flower->stats.n_packets); stats->n_bytes = get_32aligned_u64(&flower->stats.n_bytes); stats->used = flower->lastused; } static void parse_tc_flower_to_attrs(struct tc_flower *flower, struct dpif_flow_attrs *attrs) { attrs->offloaded = (flower->offloaded_state == TC_OFFLOADED_STATE_IN_HW || flower->offloaded_state == TC_OFFLOADED_STATE_UNDEFINED); attrs->dp_layer = "tc"; attrs->dp_extra_info = NULL; } static int parse_tc_flower_terse_to_match(struct tc_flower *flower, struct match *match, struct dpif_flow_stats *stats, struct dpif_flow_attrs *attrs) { match_init_catchall(match); parse_tc_flower_to_stats(flower, stats); parse_tc_flower_to_attrs(flower, attrs); return 0; } static int parse_tc_flower_to_match(struct tc_flower *flower, struct match *match, struct nlattr **actions, struct dpif_flow_stats *stats, struct dpif_flow_attrs *attrs, struct ofpbuf *buf, bool terse) { size_t act_off; struct tc_flower_key *key = &flower->key; struct tc_flower_key *mask = &flower->mask; odp_port_t outport = 0; struct tc_action *action; int i; if (terse) { return parse_tc_flower_terse_to_match(flower, match, stats, attrs); } ofpbuf_clear(buf); match_init_catchall(match); match_set_dl_src_masked(match, key->src_mac, mask->src_mac); match_set_dl_dst_masked(match, key->dst_mac, mask->dst_mac); if (eth_type_vlan(key->eth_type)) { match->flow.vlans[0].tpid = key->eth_type; match->wc.masks.vlans[0].tpid = OVS_BE16_MAX; match_set_dl_vlan(match, htons(key->vlan_id[0]), 0); match_set_dl_vlan_pcp(match, key->vlan_prio[0], 0); if (eth_type_vlan(key->encap_eth_type[0])) { match_set_dl_vlan(match, htons(key->vlan_id[1]), 1); match_set_dl_vlan_pcp(match, key->vlan_prio[1], 1); match_set_dl_type(match, key->encap_eth_type[1]); match->flow.vlans[1].tpid = key->encap_eth_type[0]; match->wc.masks.vlans[1].tpid = OVS_BE16_MAX; } else { match_set_dl_type(match, key->encap_eth_type[0]); } flow_fix_vlan_tpid(&match->flow); } else if (eth_type_mpls(key->eth_type)) { match->flow.mpls_lse[0] = key->mpls_lse & mask->mpls_lse; match->wc.masks.mpls_lse[0] = mask->mpls_lse; match_set_dl_type(match, key->encap_eth_type[0]); } else if (key->eth_type == htons(ETH_TYPE_ARP)) { match_set_arp_sha_masked(match, key->arp.sha, mask->arp.sha); match_set_arp_tha_masked(match, key->arp.tha, mask->arp.tha); match_set_arp_spa_masked(match, key->arp.spa, mask->arp.spa); match_set_arp_tpa_masked(match, key->arp.tpa, mask->arp.tpa); match_set_arp_opcode_masked(match, key->arp.opcode, mask->arp.opcode); match_set_dl_type(match, key->eth_type); } else { match_set_dl_type(match, key->eth_type); } if (is_ip_any(&match->flow)) { if (key->ip_proto) { match_set_nw_proto(match, key->ip_proto); } match_set_nw_tos_masked(match, key->ip_tos, mask->ip_tos); match_set_nw_ttl_masked(match, key->ip_ttl, mask->ip_ttl); if (mask->flags) { uint8_t flags = 0; uint8_t flags_mask = 0; if (mask->flags & TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT) { if (key->flags & TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT) { flags |= FLOW_NW_FRAG_ANY; } flags_mask |= FLOW_NW_FRAG_ANY; } if (mask->flags & TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST) { if (!(key->flags & TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST)) { flags |= FLOW_NW_FRAG_LATER; } flags_mask |= FLOW_NW_FRAG_LATER; } match_set_nw_frag_masked(match, flags, flags_mask); } match_set_nw_src_masked(match, key->ipv4.ipv4_src, mask->ipv4.ipv4_src); match_set_nw_dst_masked(match, key->ipv4.ipv4_dst, mask->ipv4.ipv4_dst); match_set_ipv6_src_masked(match, &key->ipv6.ipv6_src, &mask->ipv6.ipv6_src); match_set_ipv6_dst_masked(match, &key->ipv6.ipv6_dst, &mask->ipv6.ipv6_dst); if (key->ip_proto == IPPROTO_TCP) { match_set_tp_dst_masked(match, key->tcp_dst, mask->tcp_dst); match_set_tp_src_masked(match, key->tcp_src, mask->tcp_src); match_set_tcp_flags_masked(match, key->tcp_flags, mask->tcp_flags); } else if (key->ip_proto == IPPROTO_UDP) { match_set_tp_dst_masked(match, key->udp_dst, mask->udp_dst); match_set_tp_src_masked(match, key->udp_src, mask->udp_src); } else if (key->ip_proto == IPPROTO_SCTP) { match_set_tp_dst_masked(match, key->sctp_dst, mask->sctp_dst); match_set_tp_src_masked(match, key->sctp_src, mask->sctp_src); } if (mask->ct_state) { uint8_t ct_statev = 0, ct_statem = 0; if (mask->ct_state & TCA_FLOWER_KEY_CT_FLAGS_NEW) { if (key->ct_state & TCA_FLOWER_KEY_CT_FLAGS_NEW) { ct_statev |= OVS_CS_F_NEW; } ct_statem |= OVS_CS_F_NEW; } if (mask->ct_state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) { if (key->ct_state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) { ct_statev |= OVS_CS_F_ESTABLISHED; } ct_statem |= OVS_CS_F_ESTABLISHED; } if (mask->ct_state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED) { if (key->ct_state & TCA_FLOWER_KEY_CT_FLAGS_TRACKED) { ct_statev |= OVS_CS_F_TRACKED; } ct_statem |= OVS_CS_F_TRACKED; } match_set_ct_state_masked(match, ct_statev, ct_statem); } match_set_ct_zone_masked(match, key->ct_zone, mask->ct_zone); match_set_ct_mark_masked(match, key->ct_mark, mask->ct_mark); match_set_ct_label_masked(match, key->ct_label, mask->ct_label); } if (flower->tunnel) { if (flower->mask.tunnel.id) { match_set_tun_id(match, flower->key.tunnel.id); match->flow.tunnel.flags |= FLOW_TNL_F_KEY; } if (flower->mask.tunnel.ipv4.ipv4_dst || flower->mask.tunnel.ipv4.ipv4_src) { match_set_tun_dst_masked(match, flower->key.tunnel.ipv4.ipv4_dst, flower->mask.tunnel.ipv4.ipv4_dst); match_set_tun_src_masked(match, flower->key.tunnel.ipv4.ipv4_src, flower->mask.tunnel.ipv4.ipv4_src); } else if (ipv6_addr_is_set(&flower->mask.tunnel.ipv6.ipv6_dst) || ipv6_addr_is_set(&flower->mask.tunnel.ipv6.ipv6_src)) { match_set_tun_ipv6_dst_masked(match, &flower->key.tunnel.ipv6.ipv6_dst, &flower->mask.tunnel.ipv6.ipv6_dst); match_set_tun_ipv6_src_masked(match, &flower->key.tunnel.ipv6.ipv6_src, &flower->mask.tunnel.ipv6.ipv6_src); } if (flower->key.tunnel.tos) { match_set_tun_tos_masked(match, flower->key.tunnel.tos, flower->mask.tunnel.tos); } if (flower->key.tunnel.ttl) { match_set_tun_ttl_masked(match, flower->key.tunnel.ttl, flower->mask.tunnel.ttl); } if (flower->key.tunnel.tp_dst) { match_set_tun_tp_dst(match, flower->key.tunnel.tp_dst); } if (flower->key.tunnel.metadata.present.len) { flower_tun_opt_to_match(match, flower); } } act_off = nl_msg_start_nested(buf, OVS_FLOW_ATTR_ACTIONS); { action = flower->actions; for (i = 0; i < flower->action_count; i++, action++) { switch (action->type) { case TC_ACT_VLAN_POP: { nl_msg_put_flag(buf, OVS_ACTION_ATTR_POP_VLAN); } break; case TC_ACT_VLAN_PUSH: { struct ovs_action_push_vlan *push; push = nl_msg_put_unspec_zero(buf, OVS_ACTION_ATTR_PUSH_VLAN, sizeof *push); push->vlan_tpid = action->vlan.vlan_push_tpid; push->vlan_tci = htons(action->vlan.vlan_push_id | (action->vlan.vlan_push_prio << 13) | VLAN_CFI); } break; case TC_ACT_MPLS_POP: { nl_msg_put_be16(buf, OVS_ACTION_ATTR_POP_MPLS, action->mpls.proto); } break; case TC_ACT_MPLS_PUSH: { struct ovs_action_push_mpls *push; ovs_be32 mpls_lse = 0; flow_set_mpls_lse_label(&mpls_lse, action->mpls.label); flow_set_mpls_lse_tc(&mpls_lse, action->mpls.tc); flow_set_mpls_lse_ttl(&mpls_lse, action->mpls.ttl); flow_set_mpls_lse_bos(&mpls_lse, action->mpls.bos); push = nl_msg_put_unspec_zero(buf, OVS_ACTION_ATTR_PUSH_MPLS, sizeof *push); push->mpls_ethertype = action->mpls.proto; push->mpls_lse = mpls_lse; } break; case TC_ACT_MPLS_SET: { size_t set_offset = nl_msg_start_nested(buf, OVS_ACTION_ATTR_SET); struct ovs_key_mpls *set_mpls; ovs_be32 mpls_lse = 0; flow_set_mpls_lse_label(&mpls_lse, action->mpls.label); flow_set_mpls_lse_tc(&mpls_lse, action->mpls.tc); flow_set_mpls_lse_ttl(&mpls_lse, action->mpls.ttl); flow_set_mpls_lse_bos(&mpls_lse, action->mpls.bos); set_mpls = nl_msg_put_unspec_zero(buf, OVS_KEY_ATTR_MPLS, sizeof *set_mpls); set_mpls->mpls_lse = mpls_lse; nl_msg_end_nested(buf, set_offset); } break; case TC_ACT_PEDIT: { parse_flower_rewrite_to_netlink_action(buf, flower); } break; case TC_ACT_ENCAP: { size_t set_offset = nl_msg_start_nested(buf, OVS_ACTION_ATTR_SET); size_t tunnel_offset = nl_msg_start_nested(buf, OVS_KEY_ATTR_TUNNEL); if (action->encap.id_present) { nl_msg_put_be64(buf, OVS_TUNNEL_KEY_ATTR_ID, action->encap.id); } if (action->encap.ipv4.ipv4_src) { nl_msg_put_be32(buf, OVS_TUNNEL_KEY_ATTR_IPV4_SRC, action->encap.ipv4.ipv4_src); } if (action->encap.ipv4.ipv4_dst) { nl_msg_put_be32(buf, OVS_TUNNEL_KEY_ATTR_IPV4_DST, action->encap.ipv4.ipv4_dst); } if (ipv6_addr_is_set(&action->encap.ipv6.ipv6_src)) { nl_msg_put_in6_addr(buf, OVS_TUNNEL_KEY_ATTR_IPV6_SRC, &action->encap.ipv6.ipv6_src); } if (ipv6_addr_is_set(&action->encap.ipv6.ipv6_dst)) { nl_msg_put_in6_addr(buf, OVS_TUNNEL_KEY_ATTR_IPV6_DST, &action->encap.ipv6.ipv6_dst); } if (action->encap.tos) { nl_msg_put_u8(buf, OVS_TUNNEL_KEY_ATTR_TOS, action->encap.tos); } if (action->encap.ttl) { nl_msg_put_u8(buf, OVS_TUNNEL_KEY_ATTR_TTL, action->encap.ttl); } if (action->encap.tp_dst) { nl_msg_put_be16(buf, OVS_TUNNEL_KEY_ATTR_TP_DST, action->encap.tp_dst); } if (!action->encap.no_csum) { nl_msg_put_u8(buf, OVS_TUNNEL_KEY_ATTR_CSUM, !action->encap.no_csum); } parse_tc_flower_geneve_opts(action, buf); nl_msg_end_nested(buf, tunnel_offset); nl_msg_end_nested(buf, set_offset); } break; case TC_ACT_OUTPUT: { if (action->out.ifindex_out) { outport = netdev_ifindex_to_odp_port(action->out.ifindex_out); if (!outport) { return ENOENT; } } nl_msg_put_u32(buf, OVS_ACTION_ATTR_OUTPUT, odp_to_u32(outport)); } break; case TC_ACT_CT: { size_t ct_offset; if (action->ct.clear) { nl_msg_put_flag(buf, OVS_ACTION_ATTR_CT_CLEAR); break; } ct_offset = nl_msg_start_nested(buf, OVS_ACTION_ATTR_CT); if (action->ct.commit) { nl_msg_put_flag(buf, OVS_CT_ATTR_COMMIT); } if (action->ct.zone) { nl_msg_put_u16(buf, OVS_CT_ATTR_ZONE, action->ct.zone); } if (action->ct.mark_mask) { uint32_t mark_and_mask[2] = { action->ct.mark, action->ct.mark_mask }; nl_msg_put_unspec(buf, OVS_CT_ATTR_MARK, &mark_and_mask, sizeof mark_and_mask); } if (!ovs_u128_is_zero(action->ct.label_mask)) { struct { ovs_u128 key; ovs_u128 mask; } *ct_label; ct_label = nl_msg_put_unspec_uninit(buf, OVS_CT_ATTR_LABELS, sizeof *ct_label); ct_label->key = action->ct.label; ct_label->mask = action->ct.label_mask; } if (action->ct.nat_type) { size_t nat_offset = nl_msg_start_nested(buf, OVS_CT_ATTR_NAT); if (action->ct.nat_type == TC_NAT_SRC) { nl_msg_put_flag(buf, OVS_NAT_ATTR_SRC); } else if (action->ct.nat_type == TC_NAT_DST) { nl_msg_put_flag(buf, OVS_NAT_ATTR_DST); } if (action->ct.range.ip_family == AF_INET) { nl_msg_put_be32(buf, OVS_NAT_ATTR_IP_MIN, action->ct.range.ipv4.min); nl_msg_put_be32(buf, OVS_NAT_ATTR_IP_MAX, action->ct.range.ipv4.max); } else if (action->ct.range.ip_family == AF_INET6) { nl_msg_put_in6_addr(buf, OVS_NAT_ATTR_IP_MIN, &action->ct.range.ipv6.min); nl_msg_put_in6_addr(buf, OVS_NAT_ATTR_IP_MAX, &action->ct.range.ipv6.max); } if (action->ct.range.port.min) { nl_msg_put_u16(buf, OVS_NAT_ATTR_PROTO_MIN, ntohs(action->ct.range.port.min)); if (action->ct.range.port.max) { nl_msg_put_u16(buf, OVS_NAT_ATTR_PROTO_MAX, ntohs(action->ct.range.port.max)); } } nl_msg_end_nested(buf, nat_offset); } nl_msg_end_nested(buf, ct_offset); } break; case TC_ACT_GOTO: { nl_msg_put_u32(buf, OVS_ACTION_ATTR_RECIRC, action->chain); } break; } } } nl_msg_end_nested(buf, act_off); *actions = ofpbuf_at_assert(buf, act_off, sizeof(struct nlattr)); parse_tc_flower_to_stats(flower, stats); parse_tc_flower_to_attrs(flower, attrs); return 0; } static bool netdev_tc_flow_dump_next(struct netdev_flow_dump *dump, struct match *match, struct nlattr **actions, struct dpif_flow_stats *stats, struct dpif_flow_attrs *attrs, ovs_u128 *ufid, struct ofpbuf *rbuffer, struct ofpbuf *wbuffer) { struct netdev *netdev = dump->netdev; struct ofpbuf nl_flow; struct tcf_id id; id = tc_make_tcf_id(netdev_get_ifindex(netdev), get_block_id_from_netdev(netdev), 0, /* prio */ get_tc_qdisc_hook(netdev)); while (nl_dump_next(dump->nl_dump, &nl_flow, rbuffer)) { struct tc_flower flower; if (parse_netlink_to_tc_flower(&nl_flow, &id, &flower, dump->terse)) { continue; } if (parse_tc_flower_to_match(&flower, match, actions, stats, attrs, wbuffer, dump->terse)) { continue; } if (flower.act_cookie.len) { *ufid = *((ovs_u128 *) flower.act_cookie.data); } else if (!find_ufid(netdev, &id, ufid)) { continue; } match->wc.masks.in_port.odp_port = u32_to_odp(UINT32_MAX); match->flow.in_port.odp_port = dump->port; match_set_recirc_id(match, id.chain); return true; } return false; } static int parse_mpls_set_action(struct tc_flower *flower, struct tc_action *action, const struct nlattr *set) { const struct ovs_key_mpls *mpls_set = nl_attr_get(set); action->mpls.label = mpls_lse_to_label(mpls_set->mpls_lse); action->mpls.tc = mpls_lse_to_tc(mpls_set->mpls_lse); action->mpls.ttl = mpls_lse_to_ttl(mpls_set->mpls_lse); action->mpls.bos = mpls_lse_to_bos(mpls_set->mpls_lse); action->type = TC_ACT_MPLS_SET; flower->action_count++; return 0; } static int parse_put_flow_nat_action(struct tc_action *action, const struct nlattr *nat, size_t nat_len) { const struct nlattr *nat_attr; size_t nat_left; action->ct.nat_type = TC_NAT_RESTORE; NL_ATTR_FOR_EACH_UNSAFE (nat_attr, nat_left, nat, nat_len) { switch (nl_attr_type(nat_attr)) { case OVS_NAT_ATTR_SRC: { action->ct.nat_type = TC_NAT_SRC; }; break; case OVS_NAT_ATTR_DST: { action->ct.nat_type = TC_NAT_DST; }; break; case OVS_NAT_ATTR_IP_MIN: { if (nl_attr_get_size(nat_attr) == sizeof(ovs_be32)) { ovs_be32 addr = nl_attr_get_be32(nat_attr); action->ct.range.ipv4.min = addr; action->ct.range.ip_family = AF_INET; } else { struct in6_addr addr = nl_attr_get_in6_addr(nat_attr); action->ct.range.ipv6.min = addr; action->ct.range.ip_family = AF_INET6; } }; break; case OVS_NAT_ATTR_IP_MAX: { if (nl_attr_get_size(nat_attr) == sizeof(ovs_be32)) { ovs_be32 addr = nl_attr_get_be32(nat_attr); action->ct.range.ipv4.max = addr; action->ct.range.ip_family = AF_INET; } else { struct in6_addr addr = nl_attr_get_in6_addr(nat_attr); action->ct.range.ipv6.max = addr; action->ct.range.ip_family = AF_INET6; } }; break; case OVS_NAT_ATTR_PROTO_MIN: { action->ct.range.port.min = htons(nl_attr_get_u16(nat_attr)); }; break; case OVS_NAT_ATTR_PROTO_MAX: { action->ct.range.port.max = htons(nl_attr_get_u16(nat_attr)); }; break; } } return 0; } static int parse_put_flow_ct_action(struct tc_flower *flower, struct tc_action *action, const struct nlattr *ct, size_t ct_len) { const struct nlattr *ct_attr; size_t ct_left; int err; NL_ATTR_FOR_EACH_UNSAFE (ct_attr, ct_left, ct, ct_len) { switch (nl_attr_type(ct_attr)) { case OVS_CT_ATTR_COMMIT: { action->ct.commit = true; } break; case OVS_CT_ATTR_ZONE: { action->ct.zone = nl_attr_get_u16(ct_attr); } break; case OVS_CT_ATTR_NAT: { const struct nlattr *nat = nl_attr_get(ct_attr); const size_t nat_len = nl_attr_get_size(ct_attr); err = parse_put_flow_nat_action(action, nat, nat_len); if (err) { return err; } } break; case OVS_CT_ATTR_MARK: { const struct { uint32_t key; uint32_t mask; } *ct_mark; ct_mark = nl_attr_get_unspec(ct_attr, sizeof *ct_mark); action->ct.mark = ct_mark->key; action->ct.mark_mask = ct_mark->mask; } break; case OVS_CT_ATTR_LABELS: { const struct { ovs_u128 key; ovs_u128 mask; } *ct_label; ct_label = nl_attr_get_unspec(ct_attr, sizeof *ct_label); action->ct.label = ct_label->key; action->ct.label_mask = ct_label->mask; } break; } } action->type = TC_ACT_CT; flower->action_count++; return 0; } static int parse_put_flow_set_masked_action(struct tc_flower *flower, struct tc_action *action, const struct nlattr *set, size_t set_len, bool hasmask) { static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); uint64_t set_stub[1024 / 8]; struct ofpbuf set_buf = OFPBUF_STUB_INITIALIZER(set_stub); char *set_data, *set_mask; char *key = (char *) &flower->rewrite.key; char *mask = (char *) &flower->rewrite.mask; const struct nlattr *attr; int i, j, type; size_t size; /* copy so we can set attr mask to 0 for used ovs key struct members */ attr = ofpbuf_put(&set_buf, set, set_len); type = nl_attr_type(attr); size = nl_attr_get_size(attr) / 2; set_data = CONST_CAST(char *, nl_attr_get(attr)); set_mask = set_data + size; if (type >= ARRAY_SIZE(set_flower_map) || !set_flower_map[type][0].size) { VLOG_DBG_RL(&rl, "unsupported set action type: %d", type); ofpbuf_uninit(&set_buf); return EOPNOTSUPP; } for (i = 0; i < ARRAY_SIZE(set_flower_map[type]); i++) { struct netlink_field *f = &set_flower_map[type][i]; if (!f->size) { break; } /* copy masked value */ for (j = 0; j < f->size; j++) { char maskval = hasmask ? set_mask[f->offset + j] : 0xFF; key[f->flower_offset + j] = maskval & set_data[f->offset + j]; mask[f->flower_offset + j] = maskval; } /* set its mask to 0 to show it's been used. */ if (hasmask) { memset(set_mask + f->offset, 0, f->size); } } if (!is_all_zeros(&flower->rewrite, sizeof flower->rewrite)) { if (flower->rewrite.rewrite == false) { flower->rewrite.rewrite = true; action->type = TC_ACT_PEDIT; flower->action_count++; } } if (hasmask && !is_all_zeros(set_mask, size)) { VLOG_DBG_RL(&rl, "unsupported sub attribute of set action type %d", type); ofpbuf_uninit(&set_buf); return EOPNOTSUPP; } ofpbuf_uninit(&set_buf); return 0; } static int parse_put_flow_set_action(struct tc_flower *flower, struct tc_action *action, const struct nlattr *set, size_t set_len) { const struct nlattr *tunnel; const struct nlattr *tun_attr; size_t tun_left, tunnel_len; if (nl_attr_type(set) == OVS_KEY_ATTR_MPLS) { return parse_mpls_set_action(flower, action, set); } if (nl_attr_type(set) != OVS_KEY_ATTR_TUNNEL) { return parse_put_flow_set_masked_action(flower, action, set, set_len, false); } tunnel = nl_attr_get(set); tunnel_len = nl_attr_get_size(set); action->type = TC_ACT_ENCAP; action->encap.id_present = false; flower->action_count++; NL_ATTR_FOR_EACH_UNSAFE(tun_attr, tun_left, tunnel, tunnel_len) { switch (nl_attr_type(tun_attr)) { case OVS_TUNNEL_KEY_ATTR_ID: { action->encap.id = nl_attr_get_be64(tun_attr); action->encap.id_present = true; } break; case OVS_TUNNEL_KEY_ATTR_IPV4_SRC: { action->encap.ipv4.ipv4_src = nl_attr_get_be32(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_IPV4_DST: { action->encap.ipv4.ipv4_dst = nl_attr_get_be32(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_TOS: { action->encap.tos = nl_attr_get_u8(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_TTL: { action->encap.ttl = nl_attr_get_u8(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_IPV6_SRC: { action->encap.ipv6.ipv6_src = nl_attr_get_in6_addr(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_IPV6_DST: { action->encap.ipv6.ipv6_dst = nl_attr_get_in6_addr(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_TP_SRC: { action->encap.tp_src = nl_attr_get_be16(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_TP_DST: { action->encap.tp_dst = nl_attr_get_be16(tun_attr); } break; case OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS: { memcpy(action->encap.data.opts.gnv, nl_attr_get(tun_attr), nl_attr_get_size(tun_attr)); action->encap.data.present.len = nl_attr_get_size(tun_attr); } break; } } return 0; } static int test_key_and_mask(struct match *match) { static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); const struct flow *key = &match->flow; struct flow *mask = &match->wc.masks; if (mask->pkt_mark) { VLOG_DBG_RL(&rl, "offloading attribute pkt_mark isn't supported"); return EOPNOTSUPP; } if (mask->dp_hash) { VLOG_DBG_RL(&rl, "offloading attribute dp_hash isn't supported"); return EOPNOTSUPP; } if (mask->conj_id) { VLOG_DBG_RL(&rl, "offloading attribute conj_id isn't supported"); return EOPNOTSUPP; } if (mask->skb_priority) { VLOG_DBG_RL(&rl, "offloading attribute skb_priority isn't supported"); return EOPNOTSUPP; } if (mask->actset_output) { VLOG_DBG_RL(&rl, "offloading attribute actset_output isn't supported"); return EOPNOTSUPP; } if (mask->packet_type && key->packet_type) { VLOG_DBG_RL(&rl, "offloading attribute packet_type isn't supported"); return EOPNOTSUPP; } mask->packet_type = 0; for (int i = 0; i < FLOW_N_REGS; i++) { if (mask->regs[i]) { VLOG_DBG_RL(&rl, "offloading attribute regs[%d] isn't supported", i); return EOPNOTSUPP; } } if (mask->metadata) { VLOG_DBG_RL(&rl, "offloading attribute metadata isn't supported"); return EOPNOTSUPP; } if (mask->nw_tos) { VLOG_DBG_RL(&rl, "offloading attribute nw_tos isn't supported"); return EOPNOTSUPP; } for (int i = 1; i < FLOW_MAX_MPLS_LABELS; i++) { if (mask->mpls_lse[i]) { VLOG_DBG_RL(&rl, "offloading multiple mpls_lses isn't supported"); return EOPNOTSUPP; } } if (key->dl_type == htons(ETH_TYPE_IP) && key->nw_proto == IPPROTO_ICMP) { if (mask->tp_src) { VLOG_DBG_RL(&rl, "offloading attribute icmp_type isn't supported"); return EOPNOTSUPP; } if (mask->tp_dst) { VLOG_DBG_RL(&rl, "offloading attribute icmp_code isn't supported"); return EOPNOTSUPP; } } else if (key->dl_type == htons(ETH_TYPE_IP) && key->nw_proto == IPPROTO_IGMP) { if (mask->tp_src) { VLOG_DBG_RL(&rl, "offloading attribute igmp_type isn't supported"); return EOPNOTSUPP; } if (mask->tp_dst) { VLOG_DBG_RL(&rl, "offloading attribute igmp_code isn't supported"); return EOPNOTSUPP; } } else if (key->dl_type == htons(ETH_TYPE_IPV6) && key->nw_proto == IPPROTO_ICMPV6) { if (mask->tp_src) { VLOG_DBG_RL(&rl, "offloading attribute icmpv6_type isn't supported"); return EOPNOTSUPP; } if (mask->tp_dst) { VLOG_DBG_RL(&rl, "offloading attribute icmpv6_code isn't supported"); return EOPNOTSUPP; } } else if (key->dl_type == htons(OFP_DL_TYPE_NOT_ETH_TYPE)) { VLOG_DBG_RL(&rl, "offloading of non-ethernet packets isn't supported"); return EOPNOTSUPP; } if (!is_all_zeros(mask, sizeof *mask)) { VLOG_DBG_RL(&rl, "offloading isn't supported, unknown attribute"); return EOPNOTSUPP; } return 0; } static void flower_match_to_tun_opt(struct tc_flower *flower, const struct flow_tnl *tnl, const struct flow_tnl *tnl_mask) { struct geneve_opt *opt, *opt_mask; int len, cnt = 0; memcpy(flower->key.tunnel.metadata.opts.gnv, tnl->metadata.opts.gnv, tnl->metadata.present.len); flower->key.tunnel.metadata.present.len = tnl->metadata.present.len; memcpy(flower->mask.tunnel.metadata.opts.gnv, tnl_mask->metadata.opts.gnv, tnl->metadata.present.len); len = flower->key.tunnel.metadata.present.len; while (len) { opt = &flower->key.tunnel.metadata.opts.gnv[cnt]; opt_mask = &flower->mask.tunnel.metadata.opts.gnv[cnt]; opt_mask->length = opt->length; cnt += sizeof(struct geneve_opt) / 4 + opt->length; len -= sizeof(struct geneve_opt) + opt->length * 4; } flower->mask.tunnel.metadata.present.len = tnl->metadata.present.len; } static int netdev_tc_flow_put(struct netdev *netdev, struct match *match, struct nlattr *actions, size_t actions_len, const ovs_u128 *ufid, struct offload_info *info, struct dpif_flow_stats *stats) { static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); enum tc_qdisc_hook hook = get_tc_qdisc_hook(netdev); struct tc_flower flower; const struct flow *key = &match->flow; struct flow *mask = &match->wc.masks; const struct flow_tnl *tnl = &match->flow.tunnel; const struct flow_tnl *tnl_mask = &mask->tunnel; struct tc_action *action; bool recirc_act = false; uint32_t block_id = 0; struct nlattr *nla; struct tcf_id id; uint32_t chain; size_t left; int prio = 0; int ifindex; int err; ifindex = netdev_get_ifindex(netdev); if (ifindex < 0) { VLOG_ERR_RL(&error_rl, "flow_put: failed to get ifindex for %s: %s", netdev_get_name(netdev), ovs_strerror(-ifindex)); return -ifindex; } memset(&flower, 0, sizeof flower); chain = key->recirc_id; mask->recirc_id = 0; if (flow_tnl_dst_is_set(&key->tunnel) || flow_tnl_src_is_set(&key->tunnel)) { VLOG_DBG_RL(&rl, "tunnel: id %#" PRIx64 " src " IP_FMT " dst " IP_FMT " tp_src %d tp_dst %d", ntohll(tnl->tun_id), IP_ARGS(tnl->ip_src), IP_ARGS(tnl->ip_dst), ntohs(tnl->tp_src), ntohs(tnl->tp_dst)); flower.key.tunnel.id = tnl->tun_id; flower.key.tunnel.ipv4.ipv4_src = tnl->ip_src; flower.key.tunnel.ipv4.ipv4_dst = tnl->ip_dst; flower.key.tunnel.ipv6.ipv6_src = tnl->ipv6_src; flower.key.tunnel.ipv6.ipv6_dst = tnl->ipv6_dst; flower.key.tunnel.tos = tnl->ip_tos; flower.key.tunnel.ttl = tnl->ip_ttl; flower.key.tunnel.tp_src = tnl->tp_src; flower.key.tunnel.tp_dst = tnl->tp_dst; flower.mask.tunnel.ipv4.ipv4_src = tnl_mask->ip_src; flower.mask.tunnel.ipv4.ipv4_dst = tnl_mask->ip_dst; flower.mask.tunnel.ipv6.ipv6_src = tnl_mask->ipv6_src; flower.mask.tunnel.ipv6.ipv6_dst = tnl_mask->ipv6_dst; flower.mask.tunnel.tos = tnl_mask->ip_tos; flower.mask.tunnel.ttl = tnl_mask->ip_ttl; flower.mask.tunnel.id = (tnl->flags & FLOW_TNL_F_KEY) ? tnl_mask->tun_id : 0; flower_match_to_tun_opt(&flower, tnl, tnl_mask); flower.tunnel = true; } memset(&mask->tunnel, 0, sizeof mask->tunnel); flower.key.eth_type = key->dl_type; flower.mask.eth_type = mask->dl_type; if (mask->mpls_lse[0]) { flower.key.mpls_lse = key->mpls_lse[0]; flower.mask.mpls_lse = mask->mpls_lse[0]; flower.key.encap_eth_type[0] = flower.key.eth_type; } mask->mpls_lse[0] = 0; if (mask->vlans[0].tpid && eth_type_vlan(key->vlans[0].tpid)) { flower.key.encap_eth_type[0] = flower.key.eth_type; flower.mask.encap_eth_type[0] = flower.mask.eth_type; flower.key.eth_type = key->vlans[0].tpid; flower.mask.eth_type = mask->vlans[0].tpid; } if (mask->vlans[0].tci) { ovs_be16 vid_mask = mask->vlans[0].tci & htons(VLAN_VID_MASK); ovs_be16 pcp_mask = mask->vlans[0].tci & htons(VLAN_PCP_MASK); ovs_be16 cfi = mask->vlans[0].tci & htons(VLAN_CFI); if (cfi && key->vlans[0].tci & htons(VLAN_CFI) && (!vid_mask || vid_mask == htons(VLAN_VID_MASK)) && (!pcp_mask || pcp_mask == htons(VLAN_PCP_MASK)) && (vid_mask || pcp_mask)) { if (vid_mask) { flower.key.vlan_id[0] = vlan_tci_to_vid(key->vlans[0].tci); flower.mask.vlan_id[0] = vlan_tci_to_vid(mask->vlans[0].tci); VLOG_DBG_RL(&rl, "vlan_id[0]: %d\n", flower.key.vlan_id[0]); } if (pcp_mask) { flower.key.vlan_prio[0] = vlan_tci_to_pcp(key->vlans[0].tci); flower.mask.vlan_prio[0] = vlan_tci_to_pcp(mask->vlans[0].tci); VLOG_DBG_RL(&rl, "vlan_prio[0]: %d\n", flower.key.vlan_prio[0]); } } else if (mask->vlans[0].tci == htons(0xffff) && ntohs(key->vlans[0].tci) == 0) { /* exact && no vlan */ } else { /* partial mask */ return EOPNOTSUPP; } } if (mask->vlans[1].tpid && eth_type_vlan(key->vlans[1].tpid)) { flower.key.encap_eth_type[1] = flower.key.encap_eth_type[0]; flower.mask.encap_eth_type[1] = flower.mask.encap_eth_type[0]; flower.key.encap_eth_type[0] = key->vlans[1].tpid; flower.mask.encap_eth_type[0] = mask->vlans[1].tpid; } if (mask->vlans[1].tci) { ovs_be16 vid_mask = mask->vlans[1].tci & htons(VLAN_VID_MASK); ovs_be16 pcp_mask = mask->vlans[1].tci & htons(VLAN_PCP_MASK); ovs_be16 cfi = mask->vlans[1].tci & htons(VLAN_CFI); if (cfi && key->vlans[1].tci & htons(VLAN_CFI) && (!vid_mask || vid_mask == htons(VLAN_VID_MASK)) && (!pcp_mask || pcp_mask == htons(VLAN_PCP_MASK)) && (vid_mask || pcp_mask)) { if (vid_mask) { flower.key.vlan_id[1] = vlan_tci_to_vid(key->vlans[1].tci); flower.mask.vlan_id[1] = vlan_tci_to_vid(mask->vlans[1].tci); VLOG_DBG_RL(&rl, "vlan_id[1]: %d", flower.key.vlan_id[1]); } if (pcp_mask) { flower.key.vlan_prio[1] = vlan_tci_to_pcp(key->vlans[1].tci); flower.mask.vlan_prio[1] = vlan_tci_to_pcp(mask->vlans[1].tci); VLOG_DBG_RL(&rl, "vlan_prio[1]: %d", flower.key.vlan_prio[1]); } } else if (mask->vlans[1].tci == htons(0xffff) && ntohs(key->vlans[1].tci) == 0) { /* exact && no vlan */ } else { /* partial mask */ return EOPNOTSUPP; } } memset(mask->vlans, 0, sizeof mask->vlans); flower.key.dst_mac = key->dl_dst; flower.mask.dst_mac = mask->dl_dst; flower.key.src_mac = key->dl_src; flower.mask.src_mac = mask->dl_src; memset(&mask->dl_dst, 0, sizeof mask->dl_dst); memset(&mask->dl_src, 0, sizeof mask->dl_src); mask->dl_type = 0; mask->in_port.odp_port = 0; if (key->dl_type == htons(ETH_P_ARP)) { flower.key.arp.spa = key->nw_src; flower.key.arp.tpa = key->nw_dst; flower.key.arp.sha = key->arp_sha; flower.key.arp.tha = key->arp_tha; flower.key.arp.opcode = key->nw_proto; flower.mask.arp.spa = mask->nw_src; flower.mask.arp.tpa = mask->nw_dst; flower.mask.arp.sha = mask->arp_sha; flower.mask.arp.tha = mask->arp_tha; flower.mask.arp.opcode = mask->nw_proto; mask->nw_src = 0; mask->nw_dst = 0; mask->nw_proto = 0; memset(&mask->arp_sha, 0, sizeof mask->arp_sha); memset(&mask->arp_tha, 0, sizeof mask->arp_tha); } if (is_ip_any(key)) { flower.key.ip_proto = key->nw_proto; flower.mask.ip_proto = mask->nw_proto; mask->nw_proto = 0; flower.key.ip_tos = key->nw_tos; flower.mask.ip_tos = mask->nw_tos; mask->nw_tos = 0; flower.key.ip_ttl = key->nw_ttl; flower.mask.ip_ttl = mask->nw_ttl; mask->nw_ttl = 0; if (mask->nw_frag & FLOW_NW_FRAG_ANY) { flower.mask.flags |= TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT; if (key->nw_frag & FLOW_NW_FRAG_ANY) { flower.key.flags |= TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT; if (mask->nw_frag & FLOW_NW_FRAG_LATER) { flower.mask.flags |= TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST; if (!(key->nw_frag & FLOW_NW_FRAG_LATER)) { flower.key.flags |= TCA_FLOWER_KEY_FLAGS_FRAG_IS_FIRST; } } } mask->nw_frag = 0; } if (key->nw_proto == IPPROTO_TCP) { flower.key.tcp_dst = key->tp_dst; flower.mask.tcp_dst = mask->tp_dst; flower.key.tcp_src = key->tp_src; flower.mask.tcp_src = mask->tp_src; flower.key.tcp_flags = key->tcp_flags; flower.mask.tcp_flags = mask->tcp_flags; mask->tp_src = 0; mask->tp_dst = 0; mask->tcp_flags = 0; } else if (key->nw_proto == IPPROTO_UDP) { flower.key.udp_dst = key->tp_dst; flower.mask.udp_dst = mask->tp_dst; flower.key.udp_src = key->tp_src; flower.mask.udp_src = mask->tp_src; mask->tp_src = 0; mask->tp_dst = 0; } else if (key->nw_proto == IPPROTO_SCTP) { flower.key.sctp_dst = key->tp_dst; flower.mask.sctp_dst = mask->tp_dst; flower.key.sctp_src = key->tp_src; flower.mask.sctp_src = mask->tp_src; mask->tp_src = 0; mask->tp_dst = 0; } if (key->dl_type == htons(ETH_P_IP)) { flower.key.ipv4.ipv4_src = key->nw_src; flower.mask.ipv4.ipv4_src = mask->nw_src; flower.key.ipv4.ipv4_dst = key->nw_dst; flower.mask.ipv4.ipv4_dst = mask->nw_dst; mask->nw_src = 0; mask->nw_dst = 0; } else if (key->dl_type == htons(ETH_P_IPV6)) { flower.key.ipv6.ipv6_src = key->ipv6_src; flower.mask.ipv6.ipv6_src = mask->ipv6_src; flower.key.ipv6.ipv6_dst = key->ipv6_dst; flower.mask.ipv6.ipv6_dst = mask->ipv6_dst; memset(&mask->ipv6_src, 0, sizeof mask->ipv6_src); memset(&mask->ipv6_dst, 0, sizeof mask->ipv6_dst); } } if (mask->ct_state) { if (mask->ct_state & OVS_CS_F_NEW) { if (key->ct_state & OVS_CS_F_NEW) { flower.key.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_NEW; } flower.mask.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_NEW; } if (mask->ct_state & OVS_CS_F_ESTABLISHED) { if (key->ct_state & OVS_CS_F_ESTABLISHED) { flower.key.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED; } flower.mask.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED; } if (mask->ct_state & OVS_CS_F_TRACKED) { if (key->ct_state & OVS_CS_F_TRACKED) { flower.key.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_TRACKED; } flower.mask.ct_state |= TCA_FLOWER_KEY_CT_FLAGS_TRACKED; } if (flower.key.ct_state & TCA_FLOWER_KEY_CT_FLAGS_ESTABLISHED) { flower.key.ct_state &= ~(TCA_FLOWER_KEY_CT_FLAGS_NEW); flower.mask.ct_state &= ~(TCA_FLOWER_KEY_CT_FLAGS_NEW); } mask->ct_state = 0; } if (mask->ct_zone) { flower.key.ct_zone = key->ct_zone; flower.mask.ct_zone = mask->ct_zone; mask->ct_zone = 0; } if (mask->ct_mark) { flower.key.ct_mark = key->ct_mark; flower.mask.ct_mark = mask->ct_mark; mask->ct_mark = 0; } if (!ovs_u128_is_zero(mask->ct_label)) { flower.key.ct_label = key->ct_label; flower.mask.ct_label = mask->ct_label; mask->ct_label = OVS_U128_ZERO; } /* ignore exact match on skb_mark of 0. */ if (mask->pkt_mark == UINT32_MAX && !key->pkt_mark) { mask->pkt_mark = 0; } err = test_key_and_mask(match); if (err) { return err; } NL_ATTR_FOR_EACH(nla, left, actions, actions_len) { if (flower.action_count >= TCA_ACT_MAX_NUM) { VLOG_DBG_RL(&rl, "Can only support %d actions", TCA_ACT_MAX_NUM); return EOPNOTSUPP; } action = &flower.actions[flower.action_count]; if (nl_attr_type(nla) == OVS_ACTION_ATTR_OUTPUT) { odp_port_t port = nl_attr_get_odp_port(nla); struct netdev *outdev = netdev_ports_get( port, netdev_get_dpif_type(netdev)); if (!outdev) { VLOG_DBG_RL(&rl, "Can't find netdev for output port %d", port); return ENODEV; } action->out.ifindex_out = netdev_get_ifindex(outdev); action->out.ingress = is_internal_port(netdev_get_type(outdev)); action->type = TC_ACT_OUTPUT; flower.action_count++; netdev_close(outdev); } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_PUSH_VLAN) { const struct ovs_action_push_vlan *vlan_push = nl_attr_get(nla); action->vlan.vlan_push_tpid = vlan_push->vlan_tpid; action->vlan.vlan_push_id = vlan_tci_to_vid(vlan_push->vlan_tci); action->vlan.vlan_push_prio = vlan_tci_to_pcp(vlan_push->vlan_tci); action->type = TC_ACT_VLAN_PUSH; flower.action_count++; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_POP_VLAN) { action->type = TC_ACT_VLAN_POP; flower.action_count++; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_PUSH_MPLS) { const struct ovs_action_push_mpls *mpls_push = nl_attr_get(nla); action->mpls.proto = mpls_push->mpls_ethertype; action->mpls.label = mpls_lse_to_label(mpls_push->mpls_lse); action->mpls.tc = mpls_lse_to_tc(mpls_push->mpls_lse); action->mpls.ttl = mpls_lse_to_ttl(mpls_push->mpls_lse); action->mpls.bos = mpls_lse_to_bos(mpls_push->mpls_lse); action->type = TC_ACT_MPLS_PUSH; flower.action_count++; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_POP_MPLS) { action->mpls.proto = nl_attr_get_be16(nla); action->type = TC_ACT_MPLS_POP; flower.action_count++; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_SET) { const struct nlattr *set = nl_attr_get(nla); const size_t set_len = nl_attr_get_size(nla); err = parse_put_flow_set_action(&flower, action, set, set_len); if (err) { return err; } if (action->type == TC_ACT_ENCAP) { action->encap.tp_dst = info->tp_dst_port; action->encap.no_csum = !info->tunnel_csum_on; } } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_SET_MASKED) { const struct nlattr *set = nl_attr_get(nla); const size_t set_len = nl_attr_get_size(nla); err = parse_put_flow_set_masked_action(&flower, action, set, set_len, true); if (err) { return err; } } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_CT) { const struct nlattr *ct = nl_attr_get(nla); const size_t ct_len = nl_attr_get_size(nla); err = parse_put_flow_ct_action(&flower, action, ct, ct_len); if (err) { return err; } } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_CT_CLEAR) { action->type = TC_ACT_CT; action->ct.clear = true; flower.action_count++; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_RECIRC) { action->type = TC_ACT_GOTO; action->chain = nl_attr_get_u32(nla); flower.action_count++; recirc_act = true; } else if (nl_attr_type(nla) == OVS_ACTION_ATTR_DROP) { action->type = TC_ACT_GOTO; action->chain = 0; /* 0 is reserved and not used by recirc. */ flower.action_count++; } else { VLOG_DBG_RL(&rl, "unsupported put action type: %d", nl_attr_type(nla)); return EOPNOTSUPP; } } if ((chain || recirc_act) && !info->recirc_id_shared_with_tc) { VLOG_ERR_RL(&error_rl, "flow_put: recirc_id sharing not supported"); return EOPNOTSUPP; } if (get_ufid_tc_mapping(ufid, &id) == 0) { VLOG_DBG_RL(&rl, "updating old handle: %d prio: %d", id.handle, id.prio); info->tc_modify_flow_deleted = !del_filter_and_ufid_mapping(&id, ufid); } prio = get_prio_for_tc_flower(&flower); if (prio == 0) { VLOG_ERR_RL(&rl, "couldn't get tc prio: %s", ovs_strerror(ENOSPC)); return ENOSPC; } flower.act_cookie.data = ufid; flower.act_cookie.len = sizeof *ufid; block_id = get_block_id_from_netdev(netdev); id = tc_make_tcf_id_chain(ifindex, block_id, chain, prio, hook); err = tc_replace_flower(&id, &flower); if (!err) { if (stats) { memset(stats, 0, sizeof *stats); } add_ufid_tc_mapping(netdev, ufid, &id); } return err; } static int netdev_tc_flow_get(struct netdev *netdev, struct match *match, struct nlattr **actions, const ovs_u128 *ufid, struct dpif_flow_stats *stats, struct dpif_flow_attrs *attrs, struct ofpbuf *buf) { static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20); struct tc_flower flower; odp_port_t in_port; struct tcf_id id; int err; err = get_ufid_tc_mapping(ufid, &id); if (err) { return err; } VLOG_DBG_RL(&rl, "flow get (dev %s prio %d handle %d block_id %d)", netdev_get_name(netdev), id.prio, id.handle, id.block_id); err = tc_get_flower(&id, &flower); if (err) { VLOG_ERR_RL(&error_rl, "flow get failed (dev %s prio %d handle %d): %s", netdev_get_name(netdev), id.prio, id.handle, ovs_strerror(err)); return err; } in_port = netdev_ifindex_to_odp_port(id.ifindex); parse_tc_flower_to_match(&flower, match, actions, stats, attrs, buf, false); match->wc.masks.in_port.odp_port = u32_to_odp(UINT32_MAX); match->flow.in_port.odp_port = in_port; match_set_recirc_id(match, id.chain); return 0; } static int netdev_tc_flow_del(struct netdev *netdev OVS_UNUSED, const ovs_u128 *ufid, struct dpif_flow_stats *stats) { struct tc_flower flower; struct tcf_id id; int error; error = get_ufid_tc_mapping(ufid, &id); if (error) { return error; } if (stats) { memset(stats, 0, sizeof *stats); if (!tc_get_flower(&id, &flower)) { stats->n_packets = get_32aligned_u64(&flower.stats.n_packets); stats->n_bytes = get_32aligned_u64(&flower.stats.n_bytes); stats->used = flower.lastused; } } error = del_filter_and_ufid_mapping(&id, ufid); return error; } static void probe_multi_mask_per_prio(int ifindex) { struct tc_flower flower; struct tcf_id id1, id2; int block_id = 0; int prio = 1; int error; error = tc_add_del_qdisc(ifindex, true, block_id, TC_INGRESS); if (error) { return; } memset(&flower, 0, sizeof flower); flower.tc_policy = TC_POLICY_SKIP_HW; flower.key.eth_type = htons(ETH_P_IP); flower.mask.eth_type = OVS_BE16_MAX; memset(&flower.key.dst_mac, 0x11, sizeof flower.key.dst_mac); memset(&flower.mask.dst_mac, 0xff, sizeof flower.mask.dst_mac); id1 = tc_make_tcf_id(ifindex, block_id, prio, TC_INGRESS); error = tc_replace_flower(&id1, &flower); if (error) { goto out; } memset(&flower.key.src_mac, 0x11, sizeof flower.key.src_mac); memset(&flower.mask.src_mac, 0xff, sizeof flower.mask.src_mac); id2 = tc_make_tcf_id(ifindex, block_id, prio, TC_INGRESS); error = tc_replace_flower(&id2, &flower); tc_del_filter(&id1); if (error) { goto out; } tc_del_filter(&id2); multi_mask_per_prio = true; VLOG_INFO("probe tc: multiple masks on single tc prio is supported."); out: tc_add_del_qdisc(ifindex, false, block_id, TC_INGRESS); } static void probe_tc_block_support(int ifindex) { struct tc_flower flower; uint32_t block_id = 1; struct tcf_id id; int prio = 0; int error; error = tc_add_del_qdisc(ifindex, true, block_id, TC_INGRESS); if (error) { return; } memset(&flower, 0, sizeof flower); flower.tc_policy = TC_POLICY_SKIP_HW; flower.key.eth_type = htons(ETH_P_IP); flower.mask.eth_type = OVS_BE16_MAX; memset(&flower.key.dst_mac, 0x11, sizeof flower.key.dst_mac); memset(&flower.mask.dst_mac, 0xff, sizeof flower.mask.dst_mac); id = tc_make_tcf_id(ifindex, block_id, prio, TC_INGRESS); error = tc_replace_flower(&id, &flower); tc_add_del_qdisc(ifindex, false, block_id, TC_INGRESS); if (!error) { block_support = true; VLOG_INFO("probe tc: block offload is supported."); } } static int netdev_tc_init_flow_api(struct netdev *netdev) { static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER; enum tc_qdisc_hook hook = get_tc_qdisc_hook(netdev); uint32_t block_id = 0; struct tcf_id id; int ifindex; int error; ifindex = netdev_get_ifindex(netdev); if (ifindex < 0) { VLOG_INFO("init: failed to get ifindex for %s: %s", netdev_get_name(netdev), ovs_strerror(-ifindex)); return -ifindex; } block_id = get_block_id_from_netdev(netdev); /* Flush rules explicitly needed when we work with ingress_block, * so we will not fail with reattaching block to bond iface, for ex. */ id = tc_make_tcf_id(ifindex, block_id, 0, hook); tc_del_filter(&id); /* make sure there is no ingress/egress qdisc */ tc_add_del_qdisc(ifindex, false, 0, hook); if (ovsthread_once_start(&once)) { probe_tc_block_support(ifindex); /* Need to re-fetch block id as it depends on feature availability. */ block_id = get_block_id_from_netdev(netdev); probe_multi_mask_per_prio(ifindex); ovsthread_once_done(&once); } error = tc_add_del_qdisc(ifindex, true, block_id, hook); if (error && error != EEXIST) { VLOG_INFO("failed adding ingress qdisc required for offloading: %s", ovs_strerror(error)); return error; } VLOG_INFO("added ingress qdisc to %s", netdev_get_name(netdev)); return 0; } const struct netdev_flow_api netdev_offload_tc = { .type = "linux_tc", .flow_flush = netdev_tc_flow_flush, .flow_dump_create = netdev_tc_flow_dump_create, .flow_dump_destroy = netdev_tc_flow_dump_destroy, .flow_dump_next = netdev_tc_flow_dump_next, .flow_put = netdev_tc_flow_put, .flow_get = netdev_tc_flow_get, .flow_del = netdev_tc_flow_del, .init_flow_api = netdev_tc_init_flow_api, };