| /* |
| * Copyright (c) 2016, Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <net/flow_dissector.h> |
| #include <net/sch_generic.h> |
| #include <net/pkt_cls.h> |
| #include <net/tc_act/tc_gact.h> |
| #include <net/tc_act/tc_skbedit.h> |
| #include <linux/mlx5/fs.h> |
| #include <linux/mlx5/device.h> |
| #include <linux/rhashtable.h> |
| #include <net/switchdev.h> |
| #include <net/tc_act/tc_mirred.h> |
| #include <net/tc_act/tc_vlan.h> |
| #include <net/tc_act/tc_tunnel_key.h> |
| #include <net/tc_act/tc_pedit.h> |
| #include <net/tc_act/tc_csum.h> |
| #include <net/vxlan.h> |
| #include <net/arp.h> |
| #include "en.h" |
| #include "en_rep.h" |
| #include "en_tc.h" |
| #include "eswitch.h" |
| #include "vxlan.h" |
| |
| struct mlx5_nic_flow_attr { |
| u32 action; |
| u32 flow_tag; |
| u32 mod_hdr_id; |
| }; |
| |
| enum { |
| MLX5E_TC_FLOW_ESWITCH = BIT(0), |
| MLX5E_TC_FLOW_NIC = BIT(1), |
| MLX5E_TC_FLOW_OFFLOADED = BIT(2), |
| }; |
| |
| struct mlx5e_tc_flow { |
| struct rhash_head node; |
| u64 cookie; |
| u8 flags; |
| struct mlx5_flow_handle *rule; |
| struct list_head encap; /* flows sharing the same encap */ |
| union { |
| struct mlx5_esw_flow_attr esw_attr[0]; |
| struct mlx5_nic_flow_attr nic_attr[0]; |
| }; |
| }; |
| |
| struct mlx5e_tc_flow_parse_attr { |
| struct mlx5_flow_spec spec; |
| int num_mod_hdr_actions; |
| void *mod_hdr_actions; |
| }; |
| |
| enum { |
| MLX5_HEADER_TYPE_VXLAN = 0x0, |
| MLX5_HEADER_TYPE_NVGRE = 0x1, |
| }; |
| |
| #define MLX5E_TC_TABLE_NUM_ENTRIES 1024 |
| #define MLX5E_TC_TABLE_NUM_GROUPS 4 |
| |
| static struct mlx5_flow_handle * |
| mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_nic_flow_attr *attr = flow->nic_attr; |
| struct mlx5_core_dev *dev = priv->mdev; |
| struct mlx5_flow_destination dest = {}; |
| struct mlx5_flow_act flow_act = { |
| .action = attr->action, |
| .flow_tag = attr->flow_tag, |
| .encap_id = 0, |
| }; |
| struct mlx5_fc *counter = NULL; |
| struct mlx5_flow_handle *rule; |
| bool table_created = false; |
| int err; |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) { |
| dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; |
| dest.ft = priv->fs.vlan.ft.t; |
| } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { |
| counter = mlx5_fc_create(dev, true); |
| if (IS_ERR(counter)) |
| return ERR_CAST(counter); |
| |
| dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; |
| dest.counter = counter; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { |
| err = mlx5_modify_header_alloc(dev, MLX5_FLOW_NAMESPACE_KERNEL, |
| parse_attr->num_mod_hdr_actions, |
| parse_attr->mod_hdr_actions, |
| &attr->mod_hdr_id); |
| flow_act.modify_id = attr->mod_hdr_id; |
| kfree(parse_attr->mod_hdr_actions); |
| if (err) { |
| rule = ERR_PTR(err); |
| goto err_create_mod_hdr_id; |
| } |
| } |
| |
| if (IS_ERR_OR_NULL(priv->fs.tc.t)) { |
| priv->fs.tc.t = |
| mlx5_create_auto_grouped_flow_table(priv->fs.ns, |
| MLX5E_TC_PRIO, |
| MLX5E_TC_TABLE_NUM_ENTRIES, |
| MLX5E_TC_TABLE_NUM_GROUPS, |
| 0, 0); |
| if (IS_ERR(priv->fs.tc.t)) { |
| netdev_err(priv->netdev, |
| "Failed to create tc offload table\n"); |
| rule = ERR_CAST(priv->fs.tc.t); |
| goto err_create_ft; |
| } |
| |
| table_created = true; |
| } |
| |
| parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS; |
| rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec, |
| &flow_act, &dest, 1); |
| |
| if (IS_ERR(rule)) |
| goto err_add_rule; |
| |
| return rule; |
| |
| err_add_rule: |
| if (table_created) { |
| mlx5_destroy_flow_table(priv->fs.tc.t); |
| priv->fs.tc.t = NULL; |
| } |
| err_create_ft: |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5_modify_header_dealloc(priv->mdev, |
| attr->mod_hdr_id); |
| err_create_mod_hdr_id: |
| mlx5_fc_destroy(dev, counter); |
| |
| return rule; |
| } |
| |
| static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_fc *counter = NULL; |
| |
| counter = mlx5_flow_rule_counter(flow->rule); |
| mlx5_del_flow_rules(flow->rule); |
| mlx5_fc_destroy(priv->mdev, counter); |
| |
| if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) { |
| mlx5_destroy_flow_table(priv->fs.tc.t); |
| priv->fs.tc.t = NULL; |
| } |
| |
| if (flow->nic_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5_modify_header_dealloc(priv->mdev, |
| flow->nic_attr->mod_hdr_id); |
| } |
| |
| static void mlx5e_detach_encap(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow); |
| |
| static struct mlx5_flow_handle * |
| mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| struct mlx5_flow_handle *rule; |
| int err; |
| |
| err = mlx5_eswitch_add_vlan_action(esw, attr); |
| if (err) { |
| rule = ERR_PTR(err); |
| goto err_add_vlan; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { |
| err = mlx5_modify_header_alloc(priv->mdev, MLX5_FLOW_NAMESPACE_FDB, |
| parse_attr->num_mod_hdr_actions, |
| parse_attr->mod_hdr_actions, |
| &attr->mod_hdr_id); |
| kfree(parse_attr->mod_hdr_actions); |
| if (err) { |
| rule = ERR_PTR(err); |
| goto err_mod_hdr; |
| } |
| } |
| |
| rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr); |
| if (IS_ERR(rule)) |
| goto err_add_rule; |
| |
| return rule; |
| |
| err_add_rule: |
| if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5_modify_header_dealloc(priv->mdev, |
| attr->mod_hdr_id); |
| err_mod_hdr: |
| mlx5_eswitch_del_vlan_action(esw, attr); |
| err_add_vlan: |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) |
| mlx5e_detach_encap(priv, flow); |
| return rule; |
| } |
| |
| static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| |
| if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) { |
| flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED; |
| mlx5_eswitch_del_offloaded_rule(esw, flow->rule, flow->esw_attr); |
| } |
| |
| mlx5_eswitch_del_vlan_action(esw, flow->esw_attr); |
| |
| if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) { |
| mlx5e_detach_encap(priv, flow); |
| kvfree(flow->esw_attr->parse_attr); |
| } |
| |
| if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5_modify_header_dealloc(priv->mdev, |
| attr->mod_hdr_id); |
| } |
| |
| void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv, |
| struct mlx5e_encap_entry *e) |
| { |
| struct mlx5e_tc_flow *flow; |
| int err; |
| |
| err = mlx5_encap_alloc(priv->mdev, e->tunnel_type, |
| e->encap_size, e->encap_header, |
| &e->encap_id); |
| if (err) { |
| mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n", |
| err); |
| return; |
| } |
| e->flags |= MLX5_ENCAP_ENTRY_VALID; |
| mlx5e_rep_queue_neigh_stats_work(priv); |
| |
| list_for_each_entry(flow, &e->flows, encap) { |
| flow->esw_attr->encap_id = e->encap_id; |
| flow->rule = mlx5e_tc_add_fdb_flow(priv, |
| flow->esw_attr->parse_attr, |
| flow); |
| if (IS_ERR(flow->rule)) { |
| err = PTR_ERR(flow->rule); |
| mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n", |
| err); |
| continue; |
| } |
| flow->flags |= MLX5E_TC_FLOW_OFFLOADED; |
| } |
| } |
| |
| void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv, |
| struct mlx5e_encap_entry *e) |
| { |
| struct mlx5e_tc_flow *flow; |
| struct mlx5_fc *counter; |
| |
| list_for_each_entry(flow, &e->flows, encap) { |
| if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) { |
| flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED; |
| counter = mlx5_flow_rule_counter(flow->rule); |
| mlx5_del_flow_rules(flow->rule); |
| mlx5_fc_destroy(priv->mdev, counter); |
| } |
| } |
| |
| if (e->flags & MLX5_ENCAP_ENTRY_VALID) { |
| e->flags &= ~MLX5_ENCAP_ENTRY_VALID; |
| mlx5_encap_dealloc(priv->mdev, e->encap_id); |
| } |
| } |
| |
| void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe) |
| { |
| struct mlx5e_neigh *m_neigh = &nhe->m_neigh; |
| u64 bytes, packets, lastuse = 0; |
| struct mlx5e_tc_flow *flow; |
| struct mlx5e_encap_entry *e; |
| struct mlx5_fc *counter; |
| struct neigh_table *tbl; |
| bool neigh_used = false; |
| struct neighbour *n; |
| |
| if (m_neigh->family == AF_INET) |
| tbl = &arp_tbl; |
| #if IS_ENABLED(CONFIG_IPV6) |
| else if (m_neigh->family == AF_INET6) |
| tbl = ipv6_stub->nd_tbl; |
| #endif |
| else |
| return; |
| |
| list_for_each_entry(e, &nhe->encap_list, encap_list) { |
| if (!(e->flags & MLX5_ENCAP_ENTRY_VALID)) |
| continue; |
| list_for_each_entry(flow, &e->flows, encap) { |
| if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) { |
| counter = mlx5_flow_rule_counter(flow->rule); |
| mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); |
| if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) { |
| neigh_used = true; |
| break; |
| } |
| } |
| } |
| } |
| |
| if (neigh_used) { |
| nhe->reported_lastuse = jiffies; |
| |
| /* find the relevant neigh according to the cached device and |
| * dst ip pair |
| */ |
| n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev); |
| if (!n) { |
| WARN(1, "The neighbour already freed\n"); |
| return; |
| } |
| |
| neigh_event_send(n, NULL); |
| neigh_release(n); |
| } |
| } |
| |
| static void mlx5e_detach_encap(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct list_head *next = flow->encap.next; |
| |
| list_del(&flow->encap); |
| if (list_empty(next)) { |
| struct mlx5e_encap_entry *e; |
| |
| e = list_entry(next, struct mlx5e_encap_entry, flows); |
| mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e); |
| |
| if (e->flags & MLX5_ENCAP_ENTRY_VALID) |
| mlx5_encap_dealloc(priv->mdev, e->encap_id); |
| |
| hash_del_rcu(&e->encap_hlist); |
| kfree(e->encap_header); |
| kfree(e); |
| } |
| } |
| |
| static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| mlx5e_tc_del_fdb_flow(priv, flow); |
| else |
| mlx5e_tc_del_nic_flow(priv, flow); |
| } |
| |
| static void parse_vxlan_attr(struct mlx5_flow_spec *spec, |
| struct tc_cls_flower_offload *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); |
| void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, |
| misc_parameters); |
| void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, |
| misc_parameters); |
| |
| 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); |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) { |
| struct flow_dissector_key_keyid *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_KEYID, |
| f->key); |
| struct flow_dissector_key_keyid *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_KEYID, |
| f->mask); |
| MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni, |
| be32_to_cpu(mask->keyid)); |
| MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni, |
| be32_to_cpu(key->keyid)); |
| } |
| } |
| |
| static int parse_tunnel_attr(struct mlx5e_priv *priv, |
| struct mlx5_flow_spec *spec, |
| struct tc_cls_flower_offload *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 flow_dissector_key_control *enc_control = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_CONTROL, |
| f->key); |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) { |
| struct flow_dissector_key_ports *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_PORTS, |
| f->key); |
| struct flow_dissector_key_ports *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_PORTS, |
| f->mask); |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw); |
| struct mlx5e_priv *up_priv = netdev_priv(up_dev); |
| |
| /* Full udp dst port must be given */ |
| if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst))) |
| goto vxlan_match_offload_err; |
| |
| if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) && |
| MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) |
| parse_vxlan_attr(spec, f); |
| else { |
| netdev_warn(priv->netdev, |
| "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst)); |
| return -EOPNOTSUPP; |
| } |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_dport, ntohs(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_dport, ntohs(key->dst)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_sport, ntohs(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_sport, ntohs(key->src)); |
| } else { /* udp dst port must be given */ |
| vxlan_match_offload_err: |
| netdev_warn(priv->netdev, |
| "IP tunnel decap offload supported only for vxlan, must set UDP dport\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { |
| struct flow_dissector_key_ipv4_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv4_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, |
| f->mask); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4, |
| ntohl(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4, |
| ntohl(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4, |
| ntohl(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4, |
| ntohl(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 (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { |
| struct flow_dissector_key_ipv6_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv6_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &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), |
| &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), |
| &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), |
| &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); |
| } |
| |
| /* 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; |
| } |
| |
| static int __parse_cls_flower(struct mlx5e_priv *priv, |
| struct mlx5_flow_spec *spec, |
| struct tc_cls_flower_offload *f, |
| u8 *min_inline) |
| { |
| 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); |
| u16 addr_type = 0; |
| u8 ip_proto = 0; |
| |
| *min_inline = MLX5_INLINE_MODE_L2; |
| |
| if (f->dissector->used_keys & |
| ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | |
| BIT(FLOW_DISSECTOR_KEY_BASIC) | |
| BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_VLAN) | |
| BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_PORTS) | |
| BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | |
| BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | |
| BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) { |
| netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n", |
| f->dissector->used_keys); |
| return -EOPNOTSUPP; |
| } |
| |
| if ((dissector_uses_key(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) || |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) || |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) && |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) { |
| struct flow_dissector_key_control *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_CONTROL, |
| f->key); |
| switch (key->addr_type) { |
| case FLOW_DISSECTOR_KEY_IPV4_ADDRS: |
| case FLOW_DISSECTOR_KEY_IPV6_ADDRS: |
| if (parse_tunnel_attr(priv, spec, f)) |
| return -EOPNOTSUPP; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| /* In decap flow, header pointers should point to the inner |
| * headers, outer header were already set by parse_tunnel_attr |
| */ |
| headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, |
| inner_headers); |
| headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, |
| inner_headers); |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) { |
| struct flow_dissector_key_control *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CONTROL, |
| f->key); |
| |
| struct flow_dissector_key_control *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CONTROL, |
| f->mask); |
| addr_type = key->addr_type; |
| |
| if (mask->flags & FLOW_DIS_IS_FRAGMENT) { |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, |
| key->flags & FLOW_DIS_IS_FRAGMENT); |
| |
| /* the HW doesn't need L3 inline to match on frag=no */ |
| if (key->flags & FLOW_DIS_IS_FRAGMENT) |
| *min_inline = MLX5_INLINE_MODE_IP; |
| } |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) { |
| struct flow_dissector_key_basic *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->key); |
| struct flow_dissector_key_basic *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->mask); |
| ip_proto = key->ip_proto; |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, |
| ntohs(mask->n_proto)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, |
| ntohs(key->n_proto)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, |
| mask->ip_proto); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, |
| key->ip_proto); |
| |
| if (mask->ip_proto) |
| *min_inline = MLX5_INLINE_MODE_IP; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { |
| struct flow_dissector_key_eth_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| f->key); |
| struct flow_dissector_key_eth_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| f->mask); |
| |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dmac_47_16), |
| mask->dst); |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dmac_47_16), |
| key->dst); |
| |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| smac_47_16), |
| mask->src); |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| smac_47_16), |
| key->src); |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) { |
| struct flow_dissector_key_vlan *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_VLAN, |
| f->key); |
| struct flow_dissector_key_vlan *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_VLAN, |
| f->mask); |
| if (mask->vlan_id || mask->vlan_priority) { |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority); |
| } |
| } |
| |
| if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { |
| struct flow_dissector_key_ipv4_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv4_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| &mask->src, sizeof(mask->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| &key->src, sizeof(key->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| &mask->dst, sizeof(mask->dst)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| &key->dst, sizeof(key->dst)); |
| |
| if (mask->src || mask->dst) |
| *min_inline = MLX5_INLINE_MODE_IP; |
| } |
| |
| if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { |
| struct flow_dissector_key_ipv6_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv6_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &mask->src, sizeof(mask->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &key->src, sizeof(key->src)); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &mask->dst, sizeof(mask->dst)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &key->dst, sizeof(key->dst)); |
| |
| if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY || |
| ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY) |
| *min_inline = MLX5_INLINE_MODE_IP; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) { |
| struct flow_dissector_key_ports *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_PORTS, |
| f->key); |
| struct flow_dissector_key_ports *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_PORTS, |
| f->mask); |
| switch (ip_proto) { |
| case IPPROTO_TCP: |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| tcp_sport, ntohs(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| tcp_sport, ntohs(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| tcp_dport, ntohs(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| tcp_dport, ntohs(key->dst)); |
| break; |
| |
| case IPPROTO_UDP: |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_sport, ntohs(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_sport, ntohs(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_dport, ntohs(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_dport, ntohs(key->dst)); |
| break; |
| default: |
| netdev_err(priv->netdev, |
| "Only UDP and TCP transport are supported\n"); |
| return -EINVAL; |
| } |
| |
| if (mask->src || mask->dst) |
| *min_inline = MLX5_INLINE_MODE_TCP_UDP; |
| } |
| |
| return 0; |
| } |
| |
| static int parse_cls_flower(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow, |
| struct mlx5_flow_spec *spec, |
| struct tc_cls_flower_offload *f) |
| { |
| struct mlx5_core_dev *dev = priv->mdev; |
| struct mlx5_eswitch *esw = dev->priv.eswitch; |
| struct mlx5e_rep_priv *rpriv = priv->ppriv; |
| struct mlx5_eswitch_rep *rep; |
| u8 min_inline; |
| int err; |
| |
| err = __parse_cls_flower(priv, spec, f, &min_inline); |
| |
| if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) { |
| rep = rpriv->rep; |
| if (rep->vport != FDB_UPLINK_VPORT && |
| (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE && |
| esw->offloads.inline_mode < min_inline)) { |
| netdev_warn(priv->netdev, |
| "Flow is not offloaded due to min inline setting, required %d actual %d\n", |
| min_inline, esw->offloads.inline_mode); |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| return err; |
| } |
| |
| struct pedit_headers { |
| struct ethhdr eth; |
| struct iphdr ip4; |
| struct ipv6hdr ip6; |
| struct tcphdr tcp; |
| struct udphdr udp; |
| }; |
| |
| static int pedit_header_offsets[] = { |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp), |
| }; |
| |
| #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype]) |
| |
| static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset, |
| struct pedit_headers *masks, |
| struct pedit_headers *vals) |
| { |
| u32 *curr_pmask, *curr_pval; |
| |
| if (hdr_type >= __PEDIT_HDR_TYPE_MAX) |
| goto out_err; |
| |
| curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset); |
| curr_pval = (u32 *)(pedit_header(vals, hdr_type) + offset); |
| |
| if (*curr_pmask & mask) /* disallow acting twice on the same location */ |
| goto out_err; |
| |
| *curr_pmask |= mask; |
| *curr_pval |= (val & mask); |
| |
| return 0; |
| |
| out_err: |
| return -EOPNOTSUPP; |
| } |
| |
| struct mlx5_fields { |
| u8 field; |
| u8 size; |
| u32 offset; |
| }; |
| |
| static struct mlx5_fields fields[] = { |
| {MLX5_ACTION_IN_FIELD_OUT_DMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_dest[0])}, |
| {MLX5_ACTION_IN_FIELD_OUT_DMAC_15_0, 2, offsetof(struct pedit_headers, eth.h_dest[4])}, |
| {MLX5_ACTION_IN_FIELD_OUT_SMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_source[0])}, |
| {MLX5_ACTION_IN_FIELD_OUT_SMAC_15_0, 2, offsetof(struct pedit_headers, eth.h_source[4])}, |
| {MLX5_ACTION_IN_FIELD_OUT_ETHERTYPE, 2, offsetof(struct pedit_headers, eth.h_proto)}, |
| |
| {MLX5_ACTION_IN_FIELD_OUT_IP_TTL, 1, offsetof(struct pedit_headers, ip4.ttl)}, |
| {MLX5_ACTION_IN_FIELD_OUT_SIPV4, 4, offsetof(struct pedit_headers, ip4.saddr)}, |
| {MLX5_ACTION_IN_FIELD_OUT_DIPV4, 4, offsetof(struct pedit_headers, ip4.daddr)}, |
| |
| {MLX5_ACTION_IN_FIELD_OUT_SIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[0])}, |
| {MLX5_ACTION_IN_FIELD_OUT_SIPV6_95_64, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[1])}, |
| {MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[2])}, |
| {MLX5_ACTION_IN_FIELD_OUT_SIPV6_31_0, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[3])}, |
| {MLX5_ACTION_IN_FIELD_OUT_DIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[0])}, |
| {MLX5_ACTION_IN_FIELD_OUT_DIPV6_95_64, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[1])}, |
| {MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[2])}, |
| {MLX5_ACTION_IN_FIELD_OUT_DIPV6_31_0, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[3])}, |
| |
| {MLX5_ACTION_IN_FIELD_OUT_TCP_SPORT, 2, offsetof(struct pedit_headers, tcp.source)}, |
| {MLX5_ACTION_IN_FIELD_OUT_TCP_DPORT, 2, offsetof(struct pedit_headers, tcp.dest)}, |
| {MLX5_ACTION_IN_FIELD_OUT_TCP_FLAGS, 1, offsetof(struct pedit_headers, tcp.ack_seq) + 5}, |
| |
| {MLX5_ACTION_IN_FIELD_OUT_UDP_SPORT, 2, offsetof(struct pedit_headers, udp.source)}, |
| {MLX5_ACTION_IN_FIELD_OUT_UDP_DPORT, 2, offsetof(struct pedit_headers, udp.dest)}, |
| }; |
| |
| /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at |
| * max from the SW pedit action. On success, it says how many HW actions were |
| * actually parsed. |
| */ |
| static int offload_pedit_fields(struct pedit_headers *masks, |
| struct pedit_headers *vals, |
| struct mlx5e_tc_flow_parse_attr *parse_attr) |
| { |
| struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals; |
| int i, action_size, nactions, max_actions, first, last, first_z; |
| void *s_masks_p, *a_masks_p, *vals_p; |
| struct mlx5_fields *f; |
| u8 cmd, field_bsize; |
| u32 s_mask, a_mask; |
| unsigned long mask; |
| void *action; |
| |
| set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET]; |
| add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD]; |
| set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET]; |
| add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD]; |
| |
| action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); |
| action = parse_attr->mod_hdr_actions; |
| max_actions = parse_attr->num_mod_hdr_actions; |
| nactions = 0; |
| |
| for (i = 0; i < ARRAY_SIZE(fields); i++) { |
| f = &fields[i]; |
| /* avoid seeing bits set from previous iterations */ |
| s_mask = 0; |
| a_mask = 0; |
| |
| s_masks_p = (void *)set_masks + f->offset; |
| a_masks_p = (void *)add_masks + f->offset; |
| |
| memcpy(&s_mask, s_masks_p, f->size); |
| memcpy(&a_mask, a_masks_p, f->size); |
| |
| if (!s_mask && !a_mask) /* nothing to offload here */ |
| continue; |
| |
| if (s_mask && a_mask) { |
| printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field); |
| return -EOPNOTSUPP; |
| } |
| |
| if (nactions == max_actions) { |
| printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions); |
| return -EOPNOTSUPP; |
| } |
| |
| if (s_mask) { |
| cmd = MLX5_ACTION_TYPE_SET; |
| mask = s_mask; |
| vals_p = (void *)set_vals + f->offset; |
| /* clear to denote we consumed this field */ |
| memset(s_masks_p, 0, f->size); |
| } else { |
| cmd = MLX5_ACTION_TYPE_ADD; |
| mask = a_mask; |
| vals_p = (void *)add_vals + f->offset; |
| /* clear to denote we consumed this field */ |
| memset(a_masks_p, 0, f->size); |
| } |
| |
| field_bsize = f->size * BITS_PER_BYTE; |
| |
| first_z = find_first_zero_bit(&mask, field_bsize); |
| first = find_first_bit(&mask, field_bsize); |
| last = find_last_bit(&mask, field_bsize); |
| if (first > 0 || last != (field_bsize - 1) || first_z < last) { |
| printk(KERN_WARNING "mlx5: partial rewrite (mask %lx) is currently not offloaded\n", |
| mask); |
| return -EOPNOTSUPP; |
| } |
| |
| MLX5_SET(set_action_in, action, action_type, cmd); |
| MLX5_SET(set_action_in, action, field, f->field); |
| |
| if (cmd == MLX5_ACTION_TYPE_SET) { |
| MLX5_SET(set_action_in, action, offset, 0); |
| /* length is num of bits to be written, zero means length of 32 */ |
| MLX5_SET(set_action_in, action, length, field_bsize); |
| } |
| |
| if (field_bsize == 32) |
| MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p)); |
| else if (field_bsize == 16) |
| MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p)); |
| else if (field_bsize == 8) |
| MLX5_SET(set_action_in, action, data, *(u8 *)vals_p); |
| |
| action += action_size; |
| nactions++; |
| } |
| |
| parse_attr->num_mod_hdr_actions = nactions; |
| return 0; |
| } |
| |
| static int alloc_mod_hdr_actions(struct mlx5e_priv *priv, |
| const struct tc_action *a, int namespace, |
| struct mlx5e_tc_flow_parse_attr *parse_attr) |
| { |
| int nkeys, action_size, max_actions; |
| |
| nkeys = tcf_pedit_nkeys(a); |
| action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); |
| |
| if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */ |
| max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions); |
| else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */ |
| max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions); |
| |
| /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */ |
| max_actions = min(max_actions, nkeys * 16); |
| |
| parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL); |
| if (!parse_attr->mod_hdr_actions) |
| return -ENOMEM; |
| |
| parse_attr->num_mod_hdr_actions = max_actions; |
| return 0; |
| } |
| |
| static const struct pedit_headers zero_masks = {}; |
| |
| static int parse_tc_pedit_action(struct mlx5e_priv *priv, |
| const struct tc_action *a, int namespace, |
| struct mlx5e_tc_flow_parse_attr *parse_attr) |
| { |
| struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks; |
| int nkeys, i, err = -EOPNOTSUPP; |
| u32 mask, val, offset; |
| u8 cmd, htype; |
| |
| nkeys = tcf_pedit_nkeys(a); |
| |
| memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX); |
| memset(vals, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX); |
| |
| for (i = 0; i < nkeys; i++) { |
| htype = tcf_pedit_htype(a, i); |
| cmd = tcf_pedit_cmd(a, i); |
| err = -EOPNOTSUPP; /* can't be all optimistic */ |
| |
| if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) { |
| printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n"); |
| goto out_err; |
| } |
| |
| if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) { |
| printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd); |
| goto out_err; |
| } |
| |
| mask = tcf_pedit_mask(a, i); |
| val = tcf_pedit_val(a, i); |
| offset = tcf_pedit_offset(a, i); |
| |
| err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]); |
| if (err) |
| goto out_err; |
| } |
| |
| err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr); |
| if (err) |
| goto out_err; |
| |
| err = offload_pedit_fields(masks, vals, parse_attr); |
| if (err < 0) |
| goto out_dealloc_parsed_actions; |
| |
| for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) { |
| cmd_masks = &masks[cmd]; |
| if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) { |
| printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n", |
| cmd); |
| print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS, |
| 16, 1, cmd_masks, sizeof(zero_masks), true); |
| err = -EOPNOTSUPP; |
| goto out_dealloc_parsed_actions; |
| } |
| } |
| |
| return 0; |
| |
| out_dealloc_parsed_actions: |
| kfree(parse_attr->mod_hdr_actions); |
| out_err: |
| return err; |
| } |
| |
| static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags) |
| { |
| u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP | |
| TCA_CSUM_UPDATE_FLAG_UDP; |
| |
| /* The HW recalcs checksums only if re-writing headers */ |
| if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) { |
| netdev_warn(priv->netdev, |
| "TC csum action is only offloaded with pedit\n"); |
| return false; |
| } |
| |
| if (update_flags & ~prot_flags) { |
| netdev_warn(priv->netdev, |
| "can't offload TC csum action for some header/s - flags %#x\n", |
| update_flags); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_nic_flow_attr *attr = flow->nic_attr; |
| const struct tc_action *a; |
| LIST_HEAD(actions); |
| int err; |
| |
| if (tc_no_actions(exts)) |
| return -EINVAL; |
| |
| attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; |
| attr->action = 0; |
| |
| tcf_exts_to_list(exts, &actions); |
| list_for_each_entry(a, &actions, list) { |
| /* Only support a single action per rule */ |
| if (attr->action) |
| return -EINVAL; |
| |
| if (is_tcf_gact_shot(a)) { |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP; |
| if (MLX5_CAP_FLOWTABLE(priv->mdev, |
| flow_table_properties_nic_receive.flow_counter)) |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| continue; |
| } |
| |
| if (is_tcf_pedit(a)) { |
| err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL, |
| parse_attr); |
| if (err) |
| return err; |
| |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR | |
| MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| continue; |
| } |
| |
| if (is_tcf_csum(a)) { |
| if (csum_offload_supported(priv, attr->action, |
| tcf_csum_update_flags(a))) |
| continue; |
| |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_tcf_skbedit_mark(a)) { |
| u32 mark = tcf_skbedit_mark(a); |
| |
| if (mark & ~MLX5E_TC_FLOW_ID_MASK) { |
| netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n", |
| mark); |
| return -EINVAL; |
| } |
| |
| attr->flow_tag = mark; |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| continue; |
| } |
| |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static inline int cmp_encap_info(struct ip_tunnel_key *a, |
| struct ip_tunnel_key *b) |
| { |
| return memcmp(a, b, sizeof(*a)); |
| } |
| |
| static inline int hash_encap_info(struct ip_tunnel_key *key) |
| { |
| return jhash(key, sizeof(*key), 0); |
| } |
| |
| static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv, |
| struct net_device *mirred_dev, |
| struct net_device **out_dev, |
| struct flowi4 *fl4, |
| struct neighbour **out_n, |
| int *out_ttl) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct rtable *rt; |
| struct neighbour *n = NULL; |
| |
| #if IS_ENABLED(CONFIG_INET) |
| int ret; |
| |
| rt = ip_route_output_key(dev_net(mirred_dev), fl4); |
| ret = PTR_ERR_OR_ZERO(rt); |
| if (ret) |
| return ret; |
| #else |
| return -EOPNOTSUPP; |
| #endif |
| /* if the egress device isn't on the same HW e-switch, we use the uplink */ |
| if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev)) |
| *out_dev = mlx5_eswitch_get_uplink_netdev(esw); |
| else |
| *out_dev = rt->dst.dev; |
| |
| *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 int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv, |
| struct net_device *mirred_dev, |
| struct net_device **out_dev, |
| struct flowi6 *fl6, |
| struct neighbour **out_n, |
| int *out_ttl) |
| { |
| struct neighbour *n = NULL; |
| struct dst_entry *dst; |
| |
| #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6) |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| int ret; |
| |
| dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6); |
| ret = dst->error; |
| if (ret) { |
| dst_release(dst); |
| return ret; |
| } |
| |
| *out_ttl = ip6_dst_hoplimit(dst); |
| |
| /* if the egress device isn't on the same HW e-switch, we use the uplink */ |
| if (!switchdev_port_same_parent_id(priv->netdev, dst->dev)) |
| *out_dev = mlx5_eswitch_get_uplink_netdev(esw); |
| else |
| *out_dev = dst->dev; |
| #else |
| return -EOPNOTSUPP; |
| #endif |
| |
| n = dst_neigh_lookup(dst, &fl6->daddr); |
| dst_release(dst); |
| if (!n) |
| return -ENOMEM; |
| |
| *out_n = n; |
| return 0; |
| } |
| |
| static void gen_vxlan_header_ipv4(struct net_device *out_dev, |
| char buf[], int encap_size, |
| unsigned char h_dest[ETH_ALEN], |
| int ttl, |
| __be32 daddr, |
| __be32 saddr, |
| __be16 udp_dst_port, |
| __be32 vx_vni) |
| { |
| struct ethhdr *eth = (struct ethhdr *)buf; |
| struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr)); |
| struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr)); |
| struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr)); |
| |
| memset(buf, 0, encap_size); |
| |
| ether_addr_copy(eth->h_dest, h_dest); |
| ether_addr_copy(eth->h_source, out_dev->dev_addr); |
| eth->h_proto = htons(ETH_P_IP); |
| |
| ip->daddr = daddr; |
| ip->saddr = saddr; |
| |
| ip->ttl = ttl; |
| ip->protocol = IPPROTO_UDP; |
| ip->version = 0x4; |
| ip->ihl = 0x5; |
| |
| udp->dest = udp_dst_port; |
| vxh->vx_flags = VXLAN_HF_VNI; |
| vxh->vx_vni = vxlan_vni_field(vx_vni); |
| } |
| |
| static void gen_vxlan_header_ipv6(struct net_device *out_dev, |
| char buf[], int encap_size, |
| unsigned char h_dest[ETH_ALEN], |
| int ttl, |
| struct in6_addr *daddr, |
| struct in6_addr *saddr, |
| __be16 udp_dst_port, |
| __be32 vx_vni) |
| { |
| struct ethhdr *eth = (struct ethhdr *)buf; |
| struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr)); |
| struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr)); |
| struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr)); |
| |
| memset(buf, 0, encap_size); |
| |
| ether_addr_copy(eth->h_dest, h_dest); |
| ether_addr_copy(eth->h_source, out_dev->dev_addr); |
| eth->h_proto = htons(ETH_P_IPV6); |
| |
| ip6_flow_hdr(ip6h, 0, 0); |
| /* the HW fills up ipv6 payload len */ |
| ip6h->nexthdr = IPPROTO_UDP; |
| ip6h->hop_limit = ttl; |
| ip6h->daddr = *daddr; |
| ip6h->saddr = *saddr; |
| |
| udp->dest = udp_dst_port; |
| vxh->vx_flags = VXLAN_HF_VNI; |
| vxh->vx_vni = vxlan_vni_field(vx_vni); |
| } |
| |
| static int mlx5e_create_encap_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); |
| int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN; |
| struct ip_tunnel_key *tun_key = &e->tun_info.key; |
| struct net_device *out_dev; |
| struct neighbour *n = NULL; |
| struct flowi4 fl4 = {}; |
| char *encap_header; |
| int ttl, err; |
| u8 nud_state; |
| |
| 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); |
| return -EOPNOTSUPP; |
| } |
| |
| encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL); |
| if (!encap_header) |
| return -ENOMEM; |
| |
| switch (e->tunnel_type) { |
| case MLX5_HEADER_TYPE_VXLAN: |
| fl4.flowi4_proto = IPPROTO_UDP; |
| fl4.fl4_dport = tun_key->tp_dst; |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| fl4.flowi4_tos = tun_key->tos; |
| fl4.daddr = tun_key->u.ipv4.dst; |
| fl4.saddr = tun_key->u.ipv4.src; |
| |
| err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev, |
| &fl4, &n, &ttl); |
| if (err) |
| goto out; |
| |
| /* 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; |
| |
| /* 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 out; |
| |
| read_lock_bh(&n->lock); |
| nud_state = n->nud_state; |
| ether_addr_copy(e->h_dest, n->ha); |
| read_unlock_bh(&n->lock); |
| |
| switch (e->tunnel_type) { |
| case MLX5_HEADER_TYPE_VXLAN: |
| gen_vxlan_header_ipv4(out_dev, encap_header, |
| ipv4_encap_size, e->h_dest, ttl, |
| fl4.daddr, |
| fl4.saddr, tun_key->tp_dst, |
| tunnel_id_to_key32(tun_key->tun_id)); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| 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); |
| neigh_release(n); |
| return -EAGAIN; |
| } |
| |
| err = mlx5_encap_alloc(priv->mdev, e->tunnel_type, |
| ipv4_encap_size, encap_header, &e->encap_id); |
| if (err) |
| 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); |
| out: |
| kfree(encap_header); |
| if (n) |
| neigh_release(n); |
| return err; |
| } |
| |
| static int mlx5e_create_encap_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); |
| int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN; |
| struct ip_tunnel_key *tun_key = &e->tun_info.key; |
| struct net_device *out_dev; |
| struct neighbour *n = NULL; |
| struct flowi6 fl6 = {}; |
| char *encap_header; |
| int err, ttl = 0; |
| u8 nud_state; |
| |
| 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); |
| return -EOPNOTSUPP; |
| } |
| |
| encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL); |
| if (!encap_header) |
| return -ENOMEM; |
| |
| switch (e->tunnel_type) { |
| case MLX5_HEADER_TYPE_VXLAN: |
| fl6.flowi6_proto = IPPROTO_UDP; |
| fl6.fl6_dport = tun_key->tp_dst; |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| goto out; |
| } |
| |
| 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, |
| &fl6, &n, &ttl); |
| if (err) |
| goto out; |
| |
| /* 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; |
| |
| /* 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 out; |
| |
| read_lock_bh(&n->lock); |
| nud_state = n->nud_state; |
| ether_addr_copy(e->h_dest, n->ha); |
| read_unlock_bh(&n->lock); |
| |
| switch (e->tunnel_type) { |
| case MLX5_HEADER_TYPE_VXLAN: |
| gen_vxlan_header_ipv6(out_dev, encap_header, |
| ipv6_encap_size, e->h_dest, ttl, |
| &fl6.daddr, |
| &fl6.saddr, tun_key->tp_dst, |
| tunnel_id_to_key32(tun_key->tun_id)); |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| 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); |
| neigh_release(n); |
| return -EAGAIN; |
| } |
| |
| err = mlx5_encap_alloc(priv->mdev, e->tunnel_type, |
| ipv6_encap_size, encap_header, &e->encap_id); |
| if (err) |
| 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); |
| out: |
| kfree(encap_header); |
| if (n) |
| neigh_release(n); |
| return err; |
| } |
| |
| static int mlx5e_attach_encap(struct mlx5e_priv *priv, |
| struct ip_tunnel_info *tun_info, |
| struct net_device *mirred_dev, |
| struct net_device **encap_dev, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw); |
| unsigned short family = ip_tunnel_info_af(tun_info); |
| struct mlx5e_priv *up_priv = netdev_priv(up_dev); |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| struct ip_tunnel_key *key = &tun_info->key; |
| struct mlx5e_encap_entry *e; |
| int tunnel_type, err = 0; |
| uintptr_t hash_key; |
| bool found = false; |
| |
| /* udp dst port must be set */ |
| if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst))) |
| goto vxlan_encap_offload_err; |
| |
| /* setting udp src port isn't supported */ |
| if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) { |
| vxlan_encap_offload_err: |
| netdev_warn(priv->netdev, |
| "must set udp dst port and not set udp src port\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) && |
| MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) { |
| tunnel_type = MLX5_HEADER_TYPE_VXLAN; |
| } else { |
| netdev_warn(priv->netdev, |
| "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst)); |
| return -EOPNOTSUPP; |
| } |
| |
| hash_key = hash_encap_info(key); |
| |
| hash_for_each_possible_rcu(esw->offloads.encap_tbl, e, |
| encap_hlist, hash_key) { |
| if (!cmp_encap_info(&e->tun_info.key, key)) { |
| found = true; |
| break; |
| } |
| } |
| |
| if (found) |
| goto attach_flow; |
| |
| e = kzalloc(sizeof(*e), GFP_KERNEL); |
| if (!e) |
| return -ENOMEM; |
| |
| e->tun_info = *tun_info; |
| e->tunnel_type = tunnel_type; |
| INIT_LIST_HEAD(&e->flows); |
| |
| if (family == AF_INET) |
| err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e); |
| else if (family == AF_INET6) |
| err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e); |
| |
| if (err && err != -EAGAIN) |
| goto out_err; |
| |
| hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key); |
| |
| attach_flow: |
| list_add(&flow->encap, &e->flows); |
| *encap_dev = e->out_dev; |
| if (e->flags & MLX5_ENCAP_ENTRY_VALID) |
| attr->encap_id = e->encap_id; |
| |
| return err; |
| |
| out_err: |
| kfree(e); |
| return err; |
| } |
| |
| static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| struct mlx5e_rep_priv *rpriv = priv->ppriv; |
| struct ip_tunnel_info *info = NULL; |
| const struct tc_action *a; |
| LIST_HEAD(actions); |
| bool encap = false; |
| int err = 0; |
| |
| if (tc_no_actions(exts)) |
| return -EINVAL; |
| |
| memset(attr, 0, sizeof(*attr)); |
| attr->in_rep = rpriv->rep; |
| |
| tcf_exts_to_list(exts, &actions); |
| list_for_each_entry(a, &actions, list) { |
| if (is_tcf_gact_shot(a)) { |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP | |
| MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| continue; |
| } |
| |
| if (is_tcf_pedit(a)) { |
| err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB, |
| parse_attr); |
| if (err) |
| return err; |
| |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; |
| continue; |
| } |
| |
| if (is_tcf_csum(a)) { |
| if (csum_offload_supported(priv, attr->action, |
| tcf_csum_update_flags(a))) |
| continue; |
| |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_tcf_mirred_egress_redirect(a)) { |
| int ifindex = tcf_mirred_ifindex(a); |
| struct net_device *out_dev, *encap_dev = NULL; |
| struct mlx5e_priv *out_priv; |
| |
| out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex); |
| |
| if (switchdev_port_same_parent_id(priv->netdev, |
| out_dev)) { |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | |
| MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| out_priv = netdev_priv(out_dev); |
| rpriv = out_priv->ppriv; |
| attr->out_rep = rpriv->rep; |
| } else if (encap) { |
| err = mlx5e_attach_encap(priv, info, |
| out_dev, &encap_dev, flow); |
| if (err && err != -EAGAIN) |
| return err; |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP | |
| MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | |
| MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| out_priv = netdev_priv(encap_dev); |
| rpriv = out_priv->ppriv; |
| attr->out_rep = rpriv->rep; |
| attr->parse_attr = parse_attr; |
| } else { |
| pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", |
| priv->netdev->name, out_dev->name); |
| return -EINVAL; |
| } |
| continue; |
| } |
| |
| if (is_tcf_tunnel_set(a)) { |
| info = tcf_tunnel_info(a); |
| if (info) |
| encap = true; |
| else |
| return -EOPNOTSUPP; |
| continue; |
| } |
| |
| if (is_tcf_vlan(a)) { |
| if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) { |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP; |
| } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) { |
| if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q)) |
| return -EOPNOTSUPP; |
| |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH; |
| attr->vlan = tcf_vlan_push_vid(a); |
| } else { /* action is TCA_VLAN_ACT_MODIFY */ |
| return -EOPNOTSUPP; |
| } |
| continue; |
| } |
| |
| if (is_tcf_tunnel_release(a)) { |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP; |
| continue; |
| } |
| |
| return -EINVAL; |
| } |
| return err; |
| } |
| |
| int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol, |
| struct tc_cls_flower_offload *f) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5e_tc_flow_parse_attr *parse_attr; |
| struct mlx5e_tc_table *tc = &priv->fs.tc; |
| struct mlx5e_tc_flow *flow; |
| int attr_size, err = 0; |
| u8 flow_flags = 0; |
| |
| if (esw && esw->mode == SRIOV_OFFLOADS) { |
| flow_flags = MLX5E_TC_FLOW_ESWITCH; |
| attr_size = sizeof(struct mlx5_esw_flow_attr); |
| } else { |
| flow_flags = MLX5E_TC_FLOW_NIC; |
| attr_size = sizeof(struct mlx5_nic_flow_attr); |
| } |
| |
| flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL); |
| parse_attr = mlx5_vzalloc(sizeof(*parse_attr)); |
| if (!parse_attr || !flow) { |
| err = -ENOMEM; |
| goto err_free; |
| } |
| |
| flow->cookie = f->cookie; |
| flow->flags = flow_flags; |
| |
| err = parse_cls_flower(priv, flow, &parse_attr->spec, f); |
| if (err < 0) |
| goto err_free; |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) { |
| err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow); |
| if (err < 0) |
| goto err_handle_encap_flow; |
| flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow); |
| } else { |
| err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow); |
| if (err < 0) |
| goto err_free; |
| flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow); |
| } |
| |
| if (IS_ERR(flow->rule)) { |
| err = PTR_ERR(flow->rule); |
| goto err_free; |
| } |
| |
| flow->flags |= MLX5E_TC_FLOW_OFFLOADED; |
| err = rhashtable_insert_fast(&tc->ht, &flow->node, |
| tc->ht_params); |
| if (err) |
| goto err_del_rule; |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH && |
| !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)) |
| kvfree(parse_attr); |
| return err; |
| |
| err_del_rule: |
| mlx5e_tc_del_flow(priv, flow); |
| |
| err_handle_encap_flow: |
| if (err == -EAGAIN) { |
| err = rhashtable_insert_fast(&tc->ht, &flow->node, |
| tc->ht_params); |
| if (err) |
| mlx5e_tc_del_flow(priv, flow); |
| else |
| return 0; |
| } |
| |
| err_free: |
| kvfree(parse_attr); |
| kfree(flow); |
| return err; |
| } |
| |
| int mlx5e_delete_flower(struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f) |
| { |
| struct mlx5e_tc_flow *flow; |
| struct mlx5e_tc_table *tc = &priv->fs.tc; |
| |
| flow = rhashtable_lookup_fast(&tc->ht, &f->cookie, |
| tc->ht_params); |
| if (!flow) |
| return -EINVAL; |
| |
| rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params); |
| |
| mlx5e_tc_del_flow(priv, flow); |
| |
| kfree(flow); |
| |
| return 0; |
| } |
| |
| int mlx5e_stats_flower(struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f) |
| { |
| struct mlx5e_tc_table *tc = &priv->fs.tc; |
| struct mlx5e_tc_flow *flow; |
| struct tc_action *a; |
| struct mlx5_fc *counter; |
| LIST_HEAD(actions); |
| u64 bytes; |
| u64 packets; |
| u64 lastuse; |
| |
| flow = rhashtable_lookup_fast(&tc->ht, &f->cookie, |
| tc->ht_params); |
| if (!flow) |
| return -EINVAL; |
| |
| if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED)) |
| return 0; |
| |
| counter = mlx5_flow_rule_counter(flow->rule); |
| if (!counter) |
| return 0; |
| |
| mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); |
| |
| preempt_disable(); |
| |
| tcf_exts_to_list(f->exts, &actions); |
| list_for_each_entry(a, &actions, list) |
| tcf_action_stats_update(a, bytes, packets, lastuse); |
| |
| preempt_enable(); |
| |
| return 0; |
| } |
| |
| static const struct rhashtable_params mlx5e_tc_flow_ht_params = { |
| .head_offset = offsetof(struct mlx5e_tc_flow, node), |
| .key_offset = offsetof(struct mlx5e_tc_flow, cookie), |
| .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie), |
| .automatic_shrinking = true, |
| }; |
| |
| int mlx5e_tc_init(struct mlx5e_priv *priv) |
| { |
| struct mlx5e_tc_table *tc = &priv->fs.tc; |
| |
| tc->ht_params = mlx5e_tc_flow_ht_params; |
| return rhashtable_init(&tc->ht, &tc->ht_params); |
| } |
| |
| static void _mlx5e_tc_del_flow(void *ptr, void *arg) |
| { |
| struct mlx5e_tc_flow *flow = ptr; |
| struct mlx5e_priv *priv = arg; |
| |
| mlx5e_tc_del_flow(priv, flow); |
| kfree(flow); |
| } |
| |
| void mlx5e_tc_cleanup(struct mlx5e_priv *priv) |
| { |
| struct mlx5e_tc_table *tc = &priv->fs.tc; |
| |
| rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv); |
| |
| if (!IS_ERR_OR_NULL(tc->t)) { |
| mlx5_destroy_flow_table(tc->t); |
| tc->t = NULL; |
| } |
| } |