| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Or Gerlitz | 6810 | 33.05% | 76 | 31.28% |
| Vlad Buslov | 3226 | 15.66% | 29 | 11.93% |
| Eli Britstein | 2037 | 9.89% | 22 | 9.05% |
| Roi Dayan | 1757 | 8.53% | 16 | 6.58% |
| Amir Vadai | 1231 | 5.97% | 4 | 1.65% |
| Hadar Hen Zion | 884 | 4.29% | 7 | 2.88% |
| Pablo Neira Ayuso | 824 | 4.00% | 5 | 2.06% |
| Oz Shlomo | 718 | 3.48% | 8 | 3.29% |
| Paul Blakey | 539 | 2.62% | 7 | 2.88% |
| Jianbo Liu | 507 | 2.46% | 8 | 3.29% |
| Eli Cohen | 468 | 2.27% | 3 | 1.23% |
| Alaa Hleihel | 303 | 1.47% | 2 | 0.82% |
| Tonghao Zhang | 259 | 1.26% | 8 | 3.29% |
| Dmytro Linkin | 231 | 1.12% | 3 | 1.23% |
| Chris Mi | 131 | 0.64% | 2 | 0.82% |
| Mark Bloch | 117 | 0.57% | 5 | 2.06% |
| Yevgeny Kliteynik | 99 | 0.48% | 4 | 1.65% |
| Rabie Loulou | 96 | 0.47% | 4 | 1.65% |
| David S. Miller | 83 | 0.40% | 3 | 1.23% |
| Maor Gottlieb | 82 | 0.40% | 4 | 1.65% |
| Aviv Heller | 63 | 0.31% | 2 | 0.82% |
| Saeed Mahameed | 42 | 0.20% | 3 | 1.23% |
| Jason Gunthorpe | 32 | 0.16% | 1 | 0.41% |
| Aya Levin | 14 | 0.07% | 2 | 0.82% |
| Américo Wang | 13 | 0.06% | 2 | 0.82% |
| Ariel Levkovich | 6 | 0.03% | 1 | 0.41% |
| Guy Shattah | 5 | 0.02% | 1 | 0.41% |
| Shahar Klein | 4 | 0.02% | 1 | 0.41% |
| Parav Pandit | 4 | 0.02% | 1 | 0.41% |
| Bodong Wang | 4 | 0.02% | 2 | 0.82% |
| Leon Romanovsky | 3 | 0.01% | 1 | 0.41% |
| David Ahern | 3 | 0.01% | 1 | 0.41% |
| Huy Nguyen | 3 | 0.01% | 1 | 0.41% |
| Taehee Yoo | 2 | 0.01% | 1 | 0.41% |
| Jiri Pirko | 2 | 0.01% | 1 | 0.41% |
| zhong jiang | 1 | 0.00% | 1 | 0.41% |
| Florian Fainelli | 1 | 0.00% | 1 | 0.41% |
| Total | 20604 | 243 |
/* * 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 <linux/refcount.h> #include <linux/completion.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/arp.h> #include <net/ipv6_stubs.h> #include "en.h" #include "en_rep.h" #include "en_tc.h" #include "eswitch.h" #include "fs_core.h" #include "en/port.h" #include "en/tc_tun.h" #include "lib/devcom.h" #include "lib/geneve.h" #include "diag/en_tc_tracepoint.h" struct mlx5_nic_flow_attr { u32 action; u32 flow_tag; struct mlx5_modify_hdr *modify_hdr; u32 hairpin_tirn; u8 match_level; struct mlx5_flow_table *hairpin_ft; struct mlx5_fc *counter; }; #define MLX5E_TC_FLOW_BASE (MLX5E_TC_FLAG_LAST_EXPORTED_BIT + 1) enum { MLX5E_TC_FLOW_FLAG_INGRESS = MLX5E_TC_FLAG_INGRESS_BIT, MLX5E_TC_FLOW_FLAG_EGRESS = MLX5E_TC_FLAG_EGRESS_BIT, MLX5E_TC_FLOW_FLAG_ESWITCH = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT, MLX5E_TC_FLOW_FLAG_NIC = MLX5E_TC_FLAG_NIC_OFFLOAD_BIT, MLX5E_TC_FLOW_FLAG_OFFLOADED = MLX5E_TC_FLOW_BASE, MLX5E_TC_FLOW_FLAG_HAIRPIN = MLX5E_TC_FLOW_BASE + 1, MLX5E_TC_FLOW_FLAG_HAIRPIN_RSS = MLX5E_TC_FLOW_BASE + 2, MLX5E_TC_FLOW_FLAG_SLOW = MLX5E_TC_FLOW_BASE + 3, MLX5E_TC_FLOW_FLAG_DUP = MLX5E_TC_FLOW_BASE + 4, MLX5E_TC_FLOW_FLAG_NOT_READY = MLX5E_TC_FLOW_BASE + 5, MLX5E_TC_FLOW_FLAG_DELETED = MLX5E_TC_FLOW_BASE + 6, }; #define MLX5E_TC_MAX_SPLITS 1 /* Helper struct for accessing a struct containing list_head array. * Containing struct * |- Helper array * [0] Helper item 0 * |- list_head item 0 * |- index (0) * [1] Helper item 1 * |- list_head item 1 * |- index (1) * To access the containing struct from one of the list_head items: * 1. Get the helper item from the list_head item using * helper item = * container_of(list_head item, helper struct type, list_head field) * 2. Get the contining struct from the helper item and its index in the array: * containing struct = * container_of(helper item, containing struct type, helper field[index]) */ struct encap_flow_item { struct mlx5e_encap_entry *e; /* attached encap instance */ struct list_head list; int index; }; struct mlx5e_tc_flow { struct rhash_head node; struct mlx5e_priv *priv; u64 cookie; unsigned long flags; struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1]; /* Flow can be associated with multiple encap IDs. * The number of encaps is bounded by the number of supported * destinations. */ struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS]; struct mlx5e_tc_flow *peer_flow; struct mlx5e_mod_hdr_entry *mh; /* attached mod header instance */ struct list_head mod_hdr; /* flows sharing the same mod hdr ID */ struct mlx5e_hairpin_entry *hpe; /* attached hairpin instance */ struct list_head hairpin; /* flows sharing the same hairpin */ struct list_head peer; /* flows with peer flow */ struct list_head unready; /* flows not ready to be offloaded (e.g due to missing route) */ int tmp_efi_index; struct list_head tmp_list; /* temporary flow list used by neigh update */ refcount_t refcnt; struct rcu_head rcu_head; struct completion init_done; union { struct mlx5_esw_flow_attr esw_attr[0]; struct mlx5_nic_flow_attr nic_attr[0]; }; }; struct mlx5e_tc_flow_parse_attr { const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS]; struct net_device *filter_dev; struct mlx5_flow_spec spec; int num_mod_hdr_actions; int max_mod_hdr_actions; void *mod_hdr_actions; int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS]; }; #define MLX5E_TC_TABLE_NUM_GROUPS 4 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16) struct mlx5e_hairpin { struct mlx5_hairpin *pair; struct mlx5_core_dev *func_mdev; struct mlx5e_priv *func_priv; u32 tdn; u32 tirn; int num_channels; struct mlx5e_rqt indir_rqt; u32 indir_tirn[MLX5E_NUM_INDIR_TIRS]; struct mlx5e_ttc_table ttc; }; struct mlx5e_hairpin_entry { /* a node of a hash table which keeps all the hairpin entries */ struct hlist_node hairpin_hlist; /* protects flows list */ spinlock_t flows_lock; /* flows sharing the same hairpin */ struct list_head flows; /* hpe's that were not fully initialized when dead peer update event * function traversed them. */ struct list_head dead_peer_wait_list; u16 peer_vhca_id; u8 prio; struct mlx5e_hairpin *hp; refcount_t refcnt; struct completion res_ready; }; struct mod_hdr_key { int num_actions; void *actions; }; struct mlx5e_mod_hdr_entry { /* a node of a hash table which keeps all the mod_hdr entries */ struct hlist_node mod_hdr_hlist; /* protects flows list */ spinlock_t flows_lock; /* flows sharing the same mod_hdr entry */ struct list_head flows; struct mod_hdr_key key; struct mlx5_modify_hdr *modify_hdr; refcount_t refcnt; struct completion res_ready; int compl_result; }; #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto) static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow); static struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow) { if (!flow || !refcount_inc_not_zero(&flow->refcnt)) return ERR_PTR(-EINVAL); return flow; } static void mlx5e_flow_put(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { if (refcount_dec_and_test(&flow->refcnt)) { mlx5e_tc_del_flow(priv, flow); kfree_rcu(flow, rcu_head); } } static void __flow_flag_set(struct mlx5e_tc_flow *flow, unsigned long flag) { /* Complete all memory stores before setting bit. */ smp_mb__before_atomic(); set_bit(flag, &flow->flags); } #define flow_flag_set(flow, flag) __flow_flag_set(flow, MLX5E_TC_FLOW_FLAG_##flag) static bool __flow_flag_test_and_set(struct mlx5e_tc_flow *flow, unsigned long flag) { /* test_and_set_bit() provides all necessary barriers */ return test_and_set_bit(flag, &flow->flags); } #define flow_flag_test_and_set(flow, flag) \ __flow_flag_test_and_set(flow, \ MLX5E_TC_FLOW_FLAG_##flag) static void __flow_flag_clear(struct mlx5e_tc_flow *flow, unsigned long flag) { /* Complete all memory stores before clearing bit. */ smp_mb__before_atomic(); clear_bit(flag, &flow->flags); } #define flow_flag_clear(flow, flag) __flow_flag_clear(flow, \ MLX5E_TC_FLOW_FLAG_##flag) static bool __flow_flag_test(struct mlx5e_tc_flow *flow, unsigned long flag) { bool ret = test_bit(flag, &flow->flags); /* Read fields of flow structure only after checking flags. */ smp_mb__after_atomic(); return ret; } #define flow_flag_test(flow, flag) __flow_flag_test(flow, \ MLX5E_TC_FLOW_FLAG_##flag) static bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow) { return flow_flag_test(flow, ESWITCH); } static bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow) { return flow_flag_test(flow, OFFLOADED); } static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key) { return jhash(key->actions, key->num_actions * MLX5_MH_ACT_SZ, 0); } static inline int cmp_mod_hdr_info(struct mod_hdr_key *a, struct mod_hdr_key *b) { if (a->num_actions != b->num_actions) return 1; return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ); } static struct mod_hdr_tbl * get_mod_hdr_table(struct mlx5e_priv *priv, int namespace) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; return namespace == MLX5_FLOW_NAMESPACE_FDB ? &esw->offloads.mod_hdr : &priv->fs.tc.mod_hdr; } static struct mlx5e_mod_hdr_entry * mlx5e_mod_hdr_get(struct mod_hdr_tbl *tbl, struct mod_hdr_key *key, u32 hash_key) { struct mlx5e_mod_hdr_entry *mh, *found = NULL; hash_for_each_possible(tbl->hlist, mh, mod_hdr_hlist, hash_key) { if (!cmp_mod_hdr_info(&mh->key, key)) { refcount_inc(&mh->refcnt); found = mh; break; } } return found; } static void mlx5e_mod_hdr_put(struct mlx5e_priv *priv, struct mlx5e_mod_hdr_entry *mh, int namespace) { struct mod_hdr_tbl *tbl = get_mod_hdr_table(priv, namespace); if (!refcount_dec_and_mutex_lock(&mh->refcnt, &tbl->lock)) return; hash_del(&mh->mod_hdr_hlist); mutex_unlock(&tbl->lock); WARN_ON(!list_empty(&mh->flows)); if (mh->compl_result > 0) mlx5_modify_header_dealloc(priv->mdev, mh->modify_hdr); kfree(mh); } static int get_flow_name_space(struct mlx5e_tc_flow *flow) { return mlx5e_is_eswitch_flow(flow) ? MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL; } static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5e_tc_flow_parse_attr *parse_attr) { int num_actions, actions_size, namespace, err; struct mlx5e_mod_hdr_entry *mh; struct mod_hdr_tbl *tbl; struct mod_hdr_key key; u32 hash_key; num_actions = parse_attr->num_mod_hdr_actions; actions_size = MLX5_MH_ACT_SZ * num_actions; key.actions = parse_attr->mod_hdr_actions; key.num_actions = num_actions; hash_key = hash_mod_hdr_info(&key); namespace = get_flow_name_space(flow); tbl = get_mod_hdr_table(priv, namespace); mutex_lock(&tbl->lock); mh = mlx5e_mod_hdr_get(tbl, &key, hash_key); if (mh) { mutex_unlock(&tbl->lock); wait_for_completion(&mh->res_ready); if (mh->compl_result < 0) { err = -EREMOTEIO; goto attach_header_err; } goto attach_flow; } mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL); if (!mh) { mutex_unlock(&tbl->lock); return -ENOMEM; } mh->key.actions = (void *)mh + sizeof(*mh); memcpy(mh->key.actions, key.actions, actions_size); mh->key.num_actions = num_actions; spin_lock_init(&mh->flows_lock); INIT_LIST_HEAD(&mh->flows); refcount_set(&mh->refcnt, 1); init_completion(&mh->res_ready); hash_add(tbl->hlist, &mh->mod_hdr_hlist, hash_key); mutex_unlock(&tbl->lock); mh->modify_hdr = mlx5_modify_header_alloc(priv->mdev, namespace, mh->key.num_actions, mh->key.actions); if (IS_ERR(mh->modify_hdr)) { err = PTR_ERR(mh->modify_hdr); mh->compl_result = err; goto alloc_header_err; } mh->compl_result = 1; complete_all(&mh->res_ready); attach_flow: flow->mh = mh; spin_lock(&mh->flows_lock); list_add(&flow->mod_hdr, &mh->flows); spin_unlock(&mh->flows_lock); if (mlx5e_is_eswitch_flow(flow)) flow->esw_attr->modify_hdr = mh->modify_hdr; else flow->nic_attr->modify_hdr = mh->modify_hdr; return 0; alloc_header_err: complete_all(&mh->res_ready); attach_header_err: mlx5e_mod_hdr_put(priv, mh, namespace); return err; } static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { /* flow wasn't fully initialized */ if (!flow->mh) return; spin_lock(&flow->mh->flows_lock); list_del(&flow->mod_hdr); spin_unlock(&flow->mh->flows_lock); mlx5e_mod_hdr_put(priv, flow->mh, get_flow_name_space(flow)); flow->mh = NULL; } static struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex) { struct net_device *netdev; struct mlx5e_priv *priv; netdev = __dev_get_by_index(net, ifindex); priv = netdev_priv(netdev); return priv->mdev; } static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp) { u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0}; void *tirc; int err; err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn); if (err) goto alloc_tdn_err; tirc = MLX5_ADDR_OF(create_tir_in, in, ctx); MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT); MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]); MLX5_SET(tirc, tirc, transport_domain, hp->tdn); err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn); if (err) goto create_tir_err; return 0; create_tir_err: mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); alloc_tdn_err: return err; } static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp) { mlx5_core_destroy_tir(hp->func_mdev, hp->tirn); mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); } static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc) { u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn; struct mlx5e_priv *priv = hp->func_priv; int i, ix, sz = MLX5E_INDIR_RQT_SIZE; mlx5e_build_default_indir_rqt(indirection_rqt, sz, hp->num_channels); for (i = 0; i < sz; i++) { ix = i; if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR) ix = mlx5e_bits_invert(i, ilog2(sz)); ix = indirection_rqt[ix]; rqn = hp->pair->rqn[ix]; MLX5_SET(rqtc, rqtc, rq_num[i], rqn); } } static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp) { int inlen, err, sz = MLX5E_INDIR_RQT_SIZE; struct mlx5e_priv *priv = hp->func_priv; struct mlx5_core_dev *mdev = priv->mdev; void *rqtc; u32 *in; inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz; in = kvzalloc(inlen, GFP_KERNEL); if (!in) return -ENOMEM; rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context); MLX5_SET(rqtc, rqtc, rqt_actual_size, sz); MLX5_SET(rqtc, rqtc, rqt_max_size, sz); mlx5e_hairpin_fill_rqt_rqns(hp, rqtc); err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn); if (!err) hp->indir_rqt.enabled = true; kvfree(in); return err; } static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp) { struct mlx5e_priv *priv = hp->func_priv; u32 in[MLX5_ST_SZ_DW(create_tir_in)]; int tt, i, err; void *tirc; for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) { struct mlx5e_tirc_config ttconfig = mlx5e_tirc_get_default_config(tt); memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in)); tirc = MLX5_ADDR_OF(create_tir_in, in, ctx); MLX5_SET(tirc, tirc, transport_domain, hp->tdn); MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT); MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn); mlx5e_build_indir_tir_ctx_hash(&priv->rss_params, &ttconfig, tirc, false); err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]); if (err) { mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err); goto err_destroy_tirs; } } return 0; err_destroy_tirs: for (i = 0; i < tt; i++) mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]); return err; } static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp) { int tt; for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]); } static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp, struct ttc_params *ttc_params) { struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr; int tt; memset(ttc_params, 0, sizeof(*ttc_params)); ttc_params->any_tt_tirn = hp->tirn; for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) ttc_params->indir_tirn[tt] = hp->indir_tirn[tt]; ft_attr->max_fte = MLX5E_NUM_TT; ft_attr->level = MLX5E_TC_TTC_FT_LEVEL; ft_attr->prio = MLX5E_TC_PRIO; } static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp) { struct mlx5e_priv *priv = hp->func_priv; struct ttc_params ttc_params; int err; err = mlx5e_hairpin_create_indirect_rqt(hp); if (err) return err; err = mlx5e_hairpin_create_indirect_tirs(hp); if (err) goto err_create_indirect_tirs; mlx5e_hairpin_set_ttc_params(hp, &ttc_params); err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc); if (err) goto err_create_ttc_table; netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n", hp->num_channels, hp->ttc.ft.t->id); return 0; err_create_ttc_table: mlx5e_hairpin_destroy_indirect_tirs(hp); err_create_indirect_tirs: mlx5e_destroy_rqt(priv, &hp->indir_rqt); return err; } static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp) { struct mlx5e_priv *priv = hp->func_priv; mlx5e_destroy_ttc_table(priv, &hp->ttc); mlx5e_hairpin_destroy_indirect_tirs(hp); mlx5e_destroy_rqt(priv, &hp->indir_rqt); } static struct mlx5e_hairpin * mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params, int peer_ifindex) { struct mlx5_core_dev *func_mdev, *peer_mdev; struct mlx5e_hairpin *hp; struct mlx5_hairpin *pair; int err; hp = kzalloc(sizeof(*hp), GFP_KERNEL); if (!hp) return ERR_PTR(-ENOMEM); func_mdev = priv->mdev; peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex); pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params); if (IS_ERR(pair)) { err = PTR_ERR(pair); goto create_pair_err; } hp->pair = pair; hp->func_mdev = func_mdev; hp->func_priv = priv; hp->num_channels = params->num_channels; err = mlx5e_hairpin_create_transport(hp); if (err) goto create_transport_err; if (hp->num_channels > 1) { err = mlx5e_hairpin_rss_init(hp); if (err) goto rss_init_err; } return hp; rss_init_err: mlx5e_hairpin_destroy_transport(hp); create_transport_err: mlx5_core_hairpin_destroy(hp->pair); create_pair_err: kfree(hp); return ERR_PTR(err); } static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp) { if (hp->num_channels > 1) mlx5e_hairpin_rss_cleanup(hp); mlx5e_hairpin_destroy_transport(hp); mlx5_core_hairpin_destroy(hp->pair); kvfree(hp); } static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio) { return (peer_vhca_id << 16 | prio); } static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv, u16 peer_vhca_id, u8 prio) { struct mlx5e_hairpin_entry *hpe; u32 hash_key = hash_hairpin_info(peer_vhca_id, prio); hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe, hairpin_hlist, hash_key) { if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) { refcount_inc(&hpe->refcnt); return hpe; } } return NULL; } static void mlx5e_hairpin_put(struct mlx5e_priv *priv, struct mlx5e_hairpin_entry *hpe) { /* no more hairpin flows for us, release the hairpin pair */ if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &priv->fs.tc.hairpin_tbl_lock)) return; hash_del(&hpe->hairpin_hlist); mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); if (!IS_ERR_OR_NULL(hpe->hp)) { netdev_dbg(priv->netdev, "del hairpin: peer %s\n", dev_name(hpe->hp->pair->peer_mdev->device)); mlx5e_hairpin_destroy(hpe->hp); } WARN_ON(!list_empty(&hpe->flows)); kfree(hpe); } #define UNKNOWN_MATCH_PRIO 8 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, u8 *match_prio, struct netlink_ext_ack *extack) { void *headers_c, *headers_v; u8 prio_val, prio_mask = 0; bool vlan_present; #ifdef CONFIG_MLX5_CORE_EN_DCB if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) { NL_SET_ERR_MSG_MOD(extack, "only PCP trust state supported for hairpin"); return -EOPNOTSUPP; } #endif headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag); if (vlan_present) { prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio); prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio); } if (!vlan_present || !prio_mask) { prio_val = UNKNOWN_MATCH_PRIO; } else if (prio_mask != 0x7) { NL_SET_ERR_MSG_MOD(extack, "masked priority match not supported for hairpin"); return -EOPNOTSUPP; } *match_prio = prio_val; return 0; } static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5e_tc_flow_parse_attr *parse_attr, struct netlink_ext_ack *extack) { int peer_ifindex = parse_attr->mirred_ifindex[0]; struct mlx5_hairpin_params params; struct mlx5_core_dev *peer_mdev; struct mlx5e_hairpin_entry *hpe; struct mlx5e_hairpin *hp; u64 link_speed64; u32 link_speed; u8 match_prio; u16 peer_id; int err; peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex); if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) { NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported"); return -EOPNOTSUPP; } peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id); err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio, extack); if (err) return err; mutex_lock(&priv->fs.tc.hairpin_tbl_lock); hpe = mlx5e_hairpin_get(priv, peer_id, match_prio); if (hpe) { mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); wait_for_completion(&hpe->res_ready); if (IS_ERR(hpe->hp)) { err = -EREMOTEIO; goto out_err; } goto attach_flow; } hpe = kzalloc(sizeof(*hpe), GFP_KERNEL); if (!hpe) { mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); return -ENOMEM; } spin_lock_init(&hpe->flows_lock); INIT_LIST_HEAD(&hpe->flows); INIT_LIST_HEAD(&hpe->dead_peer_wait_list); hpe->peer_vhca_id = peer_id; hpe->prio = match_prio; refcount_set(&hpe->refcnt, 1); init_completion(&hpe->res_ready); hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist, hash_hairpin_info(peer_id, match_prio)); mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); params.log_data_size = 15; params.log_data_size = min_t(u8, params.log_data_size, MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz)); params.log_data_size = max_t(u8, params.log_data_size, MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz)); params.log_num_packets = params.log_data_size - MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev); params.log_num_packets = min_t(u8, params.log_num_packets, MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets)); params.q_counter = priv->q_counter; /* set hairpin pair per each 50Gbs share of the link */ mlx5e_port_max_linkspeed(priv->mdev, &link_speed); link_speed = max_t(u32, link_speed, 50000); link_speed64 = link_speed; do_div(link_speed64, 50000); params.num_channels = link_speed64; hp = mlx5e_hairpin_create(priv, ¶ms, peer_ifindex); hpe->hp = hp; complete_all(&hpe->res_ready); if (IS_ERR(hp)) { err = PTR_ERR(hp); goto out_err; } netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n", hp->tirn, hp->pair->rqn[0], dev_name(hp->pair->peer_mdev->device), hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets); attach_flow: if (hpe->hp->num_channels > 1) { flow_flag_set(flow, HAIRPIN_RSS); flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t; } else { flow->nic_attr->hairpin_tirn = hpe->hp->tirn; } flow->hpe = hpe; spin_lock(&hpe->flows_lock); list_add(&flow->hairpin, &hpe->flows); spin_unlock(&hpe->flows_lock); return 0; out_err: mlx5e_hairpin_put(priv, hpe); return err; } static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { /* flow wasn't fully initialized */ if (!flow->hpe) return; spin_lock(&flow->hpe->flows_lock); list_del(&flow->hairpin); spin_unlock(&flow->hpe->flows_lock); mlx5e_hairpin_put(priv, flow->hpe); flow->hpe = NULL; } static int mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5_flow_context *flow_context = &parse_attr->spec.flow_context; struct mlx5_nic_flow_attr *attr = flow->nic_attr; struct mlx5_core_dev *dev = priv->mdev; struct mlx5_flow_destination dest[2] = {}; struct mlx5_flow_act flow_act = { .action = attr->action, .flags = FLOW_ACT_NO_APPEND, }; struct mlx5_fc *counter = NULL; int err, dest_ix = 0; flow_context->flags |= FLOW_CONTEXT_HAS_TAG; flow_context->flow_tag = attr->flow_tag; if (flow_flag_test(flow, HAIRPIN)) { err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack); if (err) return err; if (flow_flag_test(flow, HAIRPIN_RSS)) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; dest[dest_ix].ft = attr->hairpin_ft; } else { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR; dest[dest_ix].tir_num = attr->hairpin_tirn; } dest_ix++; } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; dest[dest_ix].ft = priv->fs.vlan.ft.t; dest_ix++; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { counter = mlx5_fc_create(dev, true); if (IS_ERR(counter)) return PTR_ERR(counter); dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; dest[dest_ix].counter_id = mlx5_fc_id(counter); dest_ix++; attr->counter = counter; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { err = mlx5e_attach_mod_hdr(priv, flow, parse_attr); flow_act.modify_hdr = attr->modify_hdr; kfree(parse_attr->mod_hdr_actions); if (err) return err; } mutex_lock(&priv->fs.tc.t_lock); if (IS_ERR_OR_NULL(priv->fs.tc.t)) { int tc_grp_size, tc_tbl_size; u32 max_flow_counter; max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) | MLX5_CAP_GEN(dev, max_flow_counter_15_0); tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE); tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS, BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size))); priv->fs.tc.t = mlx5_create_auto_grouped_flow_table(priv->fs.ns, MLX5E_TC_PRIO, tc_tbl_size, MLX5E_TC_TABLE_NUM_GROUPS, MLX5E_TC_FT_LEVEL, 0); if (IS_ERR(priv->fs.tc.t)) { mutex_unlock(&priv->fs.tc.t_lock); NL_SET_ERR_MSG_MOD(extack, "Failed to create tc offload table\n"); netdev_err(priv->netdev, "Failed to create tc offload table\n"); return PTR_ERR(priv->fs.tc.t); } } if (attr->match_level != MLX5_MATCH_NONE) parse_attr->spec.match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS; flow->rule[0] = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec, &flow_act, dest, dest_ix); mutex_unlock(&priv->fs.tc.t_lock); return PTR_ERR_OR_ZERO(flow->rule[0]); } static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { struct mlx5_nic_flow_attr *attr = flow->nic_attr; struct mlx5_fc *counter = NULL; counter = attr->counter; if (!IS_ERR_OR_NULL(flow->rule[0])) mlx5_del_flow_rules(flow->rule[0]); mlx5_fc_destroy(priv->mdev, counter); mutex_lock(&priv->fs.tc.t_lock); if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) && priv->fs.tc.t) { mlx5_destroy_flow_table(priv->fs.tc.t); priv->fs.tc.t = NULL; } mutex_unlock(&priv->fs.tc.t_lock); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) mlx5e_detach_mod_hdr(priv, flow); if (flow_flag_test(flow, HAIRPIN)) mlx5e_hairpin_flow_del(priv, flow); } static void mlx5e_detach_encap(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, int out_index); static int mlx5e_attach_encap(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct net_device *mirred_dev, int out_index, struct netlink_ext_ack *extack, struct net_device **encap_dev, bool *encap_valid); static struct mlx5_flow_handle * mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct mlx5_esw_flow_attr *attr) { struct mlx5_flow_handle *rule; rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr); if (IS_ERR(rule)) return rule; if (attr->split_count) { flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr); if (IS_ERR(flow->rule[1])) { mlx5_eswitch_del_offloaded_rule(esw, rule, attr); return flow->rule[1]; } } return rule; } static void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow, struct mlx5_esw_flow_attr *attr) { flow_flag_clear(flow, OFFLOADED); if (attr->split_count) mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr); mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr); } static struct mlx5_flow_handle * mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct mlx5_esw_flow_attr *slow_attr) { struct mlx5_flow_handle *rule; memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr)); slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; slow_attr->split_count = 0; slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN; rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr); if (!IS_ERR(rule)) flow_flag_set(flow, SLOW); return rule; } static void mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow, struct mlx5_esw_flow_attr *slow_attr) { memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr)); slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; slow_attr->split_count = 0; slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN; mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr); flow_flag_clear(flow, SLOW); } /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this * function. */ static void unready_flow_add(struct mlx5e_tc_flow *flow, struct list_head *unready_flows) { flow_flag_set(flow, NOT_READY); list_add_tail(&flow->unready, unready_flows); } /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this * function. */ static void unready_flow_del(struct mlx5e_tc_flow *flow) { list_del(&flow->unready); flow_flag_clear(flow, NOT_READY); } static void add_unready_flow(struct mlx5e_tc_flow *flow) { struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *rpriv; struct mlx5_eswitch *esw; esw = flow->priv->mdev->priv.eswitch; rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &rpriv->uplink_priv; mutex_lock(&uplink_priv->unready_flows_lock); unready_flow_add(flow, &uplink_priv->unready_flows); mutex_unlock(&uplink_priv->unready_flows_lock); } static void remove_unready_flow(struct mlx5e_tc_flow *flow) { struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *rpriv; struct mlx5_eswitch *esw; esw = flow->priv->mdev->priv.eswitch; rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &rpriv->uplink_priv; mutex_lock(&uplink_priv->unready_flows_lock); unready_flow_del(flow); mutex_unlock(&uplink_priv->unready_flows_lock); } static int mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; u32 max_chain = mlx5_eswitch_get_chain_range(esw); struct mlx5_esw_flow_attr *attr = flow->esw_attr; struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr; u16 max_prio = mlx5_eswitch_get_prio_range(esw); struct net_device *out_dev, *encap_dev = NULL; struct mlx5_fc *counter = NULL; struct mlx5e_rep_priv *rpriv; struct mlx5e_priv *out_priv; bool encap_valid = true; int err = 0; int out_index; if (!mlx5_eswitch_prios_supported(esw) && attr->prio != 1) { NL_SET_ERR_MSG(extack, "E-switch priorities unsupported, upgrade FW"); return -EOPNOTSUPP; } if (attr->chain > max_chain) { NL_SET_ERR_MSG(extack, "Requested chain is out of supported range"); return -EOPNOTSUPP; } if (attr->prio > max_prio) { NL_SET_ERR_MSG(extack, "Requested priority is out of supported range"); return -EOPNOTSUPP; } for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) { int mirred_ifindex; if (!(attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)) continue; mirred_ifindex = parse_attr->mirred_ifindex[out_index]; out_dev = __dev_get_by_index(dev_net(priv->netdev), mirred_ifindex); err = mlx5e_attach_encap(priv, flow, out_dev, out_index, extack, &encap_dev, &encap_valid); if (err) return err; out_priv = netdev_priv(encap_dev); rpriv = out_priv->ppriv; attr->dests[out_index].rep = rpriv->rep; attr->dests[out_index].mdev = out_priv->mdev; } err = mlx5_eswitch_add_vlan_action(esw, attr); if (err) return err; if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { err = mlx5e_attach_mod_hdr(priv, flow, parse_attr); kfree(parse_attr->mod_hdr_actions); if (err) return err; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { counter = mlx5_fc_create(attr->counter_dev, true); if (IS_ERR(counter)) return PTR_ERR(counter); attr->counter = counter; } /* we get here if one of the following takes place: * (1) there's no error * (2) there's an encap action and we don't have valid neigh */ if (!encap_valid) { /* continue with goto slow path rule instead */ struct mlx5_esw_flow_attr slow_attr; flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec, &slow_attr); } else { flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr); } if (IS_ERR(flow->rule[0])) return PTR_ERR(flow->rule[0]); else flow_flag_set(flow, OFFLOADED); return 0; } static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow) { struct mlx5_flow_spec *spec = &flow->esw_attr->parse_attr->spec; void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_3); u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3, headers_v, geneve_tlv_option_0_data); return !!geneve_tlv_opt_0_data; } 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; struct mlx5_esw_flow_attr slow_attr; int out_index; if (flow_flag_test(flow, NOT_READY)) { remove_unready_flow(flow); kvfree(attr->parse_attr); return; } if (mlx5e_is_offloaded_flow(flow)) { if (flow_flag_test(flow, SLOW)) mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr); else mlx5e_tc_unoffload_fdb_rules(esw, flow, attr); } if (mlx5_flow_has_geneve_opt(flow)) mlx5_geneve_tlv_option_del(priv->mdev->geneve); mlx5_eswitch_del_vlan_action(esw, attr); for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) if (attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP) { mlx5e_detach_encap(priv, flow, out_index); kfree(attr->parse_attr->tun_info[out_index]); } kvfree(attr->parse_attr); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) mlx5e_detach_mod_hdr(priv, flow); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) mlx5_fc_destroy(attr->counter_dev, attr->counter); } void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e, struct list_head *flow_list) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr slow_attr, *esw_attr; struct mlx5_flow_handle *rule; struct mlx5_flow_spec *spec; struct mlx5e_tc_flow *flow; int err; e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev, e->reformat_type, e->encap_size, e->encap_header, MLX5_FLOW_NAMESPACE_FDB); if (IS_ERR(e->pkt_reformat)) { mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %lu\n", PTR_ERR(e->pkt_reformat)); return; } e->flags |= MLX5_ENCAP_ENTRY_VALID; mlx5e_rep_queue_neigh_stats_work(priv); list_for_each_entry(flow, flow_list, tmp_list) { bool all_flow_encaps_valid = true; int i; if (!mlx5e_is_offloaded_flow(flow)) continue; esw_attr = flow->esw_attr; spec = &esw_attr->parse_attr->spec; esw_attr->dests[flow->tmp_efi_index].pkt_reformat = e->pkt_reformat; esw_attr->dests[flow->tmp_efi_index].flags |= MLX5_ESW_DEST_ENCAP_VALID; /* Flow can be associated with multiple encap entries. * Before offloading the flow verify that all of them have * a valid neighbour. */ for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) { if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP)) continue; if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP_VALID)) { all_flow_encaps_valid = false; break; } } /* Do not offload flows with unresolved neighbors */ if (!all_flow_encaps_valid) continue; /* update from slow path rule to encap rule */ rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, esw_attr); if (IS_ERR(rule)) { err = PTR_ERR(rule); mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n", err); continue; } mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr); flow->rule[0] = rule; /* was unset when slow path rule removed */ flow_flag_set(flow, OFFLOADED); } } void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e, struct list_head *flow_list) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr slow_attr; struct mlx5_flow_handle *rule; struct mlx5_flow_spec *spec; struct mlx5e_tc_flow *flow; int err; list_for_each_entry(flow, flow_list, tmp_list) { if (!mlx5e_is_offloaded_flow(flow)) continue; spec = &flow->esw_attr->parse_attr->spec; /* update from encap rule to slow path rule */ rule = mlx5e_tc_offload_to_slow_path(esw, flow, spec, &slow_attr); /* mark the flow's encap dest as non-valid */ flow->esw_attr->dests[flow->tmp_efi_index].flags &= ~MLX5_ESW_DEST_ENCAP_VALID; if (IS_ERR(rule)) { err = PTR_ERR(rule); mlx5_core_warn(priv->mdev, "Failed to update slow path (encap) flow, %d\n", err); continue; } mlx5e_tc_unoffload_fdb_rules(esw, flow, flow->esw_attr); flow->rule[0] = rule; /* was unset when fast path rule removed */ flow_flag_set(flow, OFFLOADED); } /* we know that the encap is valid */ e->flags &= ~MLX5_ENCAP_ENTRY_VALID; mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat); } static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow) { if (mlx5e_is_eswitch_flow(flow)) return flow->esw_attr->counter; else return flow->nic_attr->counter; } /* Takes reference to all flows attached to encap and adds the flows to * flow_list using 'tmp_list' list_head in mlx5e_tc_flow. */ void mlx5e_take_all_encap_flows(struct mlx5e_encap_entry *e, struct list_head *flow_list) { struct encap_flow_item *efi; struct mlx5e_tc_flow *flow; list_for_each_entry(efi, &e->flows, list) { flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]); if (IS_ERR(mlx5e_flow_get(flow))) continue; wait_for_completion(&flow->init_done); flow->tmp_efi_index = efi->index; list_add(&flow->tmp_list, flow_list); } } /* Iterate over tmp_list of flows attached to flow_list head. */ void mlx5e_put_encap_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list) { struct mlx5e_tc_flow *flow, *tmp; list_for_each_entry_safe(flow, tmp, flow_list, tmp_list) mlx5e_flow_put(priv, flow); } static struct mlx5e_encap_entry * mlx5e_get_next_valid_encap(struct mlx5e_neigh_hash_entry *nhe, struct mlx5e_encap_entry *e) { struct mlx5e_encap_entry *next = NULL; retry: rcu_read_lock(); /* find encap with non-zero reference counter value */ for (next = e ? list_next_or_null_rcu(&nhe->encap_list, &e->encap_list, struct mlx5e_encap_entry, encap_list) : list_first_or_null_rcu(&nhe->encap_list, struct mlx5e_encap_entry, encap_list); next; next = list_next_or_null_rcu(&nhe->encap_list, &next->encap_list, struct mlx5e_encap_entry, encap_list)) if (mlx5e_encap_take(next)) break; rcu_read_unlock(); /* release starting encap */ if (e) mlx5e_encap_put(netdev_priv(e->out_dev), e); if (!next) return next; /* wait for encap to be fully initialized */ wait_for_completion(&next->res_ready); /* continue searching if encap entry is not in valid state after completion */ if (!(next->flags & MLX5_ENCAP_ENTRY_VALID)) { e = next; goto retry; } return next; } void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe) { struct mlx5e_neigh *m_neigh = &nhe->m_neigh; struct mlx5e_encap_entry *e = NULL; struct mlx5e_tc_flow *flow; struct mlx5_fc *counter; struct neigh_table *tbl; bool neigh_used = false; struct neighbour *n; u64 lastuse; 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; /* mlx5e_get_next_valid_encap() releases previous encap before returning * next one. */ while ((e = mlx5e_get_next_valid_encap(nhe, e)) != NULL) { struct mlx5e_priv *priv = netdev_priv(e->out_dev); struct encap_flow_item *efi, *tmp; struct mlx5_eswitch *esw; LIST_HEAD(flow_list); esw = priv->mdev->priv.eswitch; mutex_lock(&esw->offloads.encap_tbl_lock); list_for_each_entry_safe(efi, tmp, &e->flows, list) { flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]); if (IS_ERR(mlx5e_flow_get(flow))) continue; list_add(&flow->tmp_list, &flow_list); if (mlx5e_is_offloaded_flow(flow)) { counter = mlx5e_tc_get_counter(flow); lastuse = mlx5_fc_query_lastuse(counter); if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) { neigh_used = true; break; } } } mutex_unlock(&esw->offloads.encap_tbl_lock); mlx5e_put_encap_flow_list(priv, &flow_list); if (neigh_used) { /* release current encap before breaking the loop */ mlx5e_encap_put(priv, e); break; } } trace_mlx5e_tc_update_neigh_used_value(nhe, neigh_used); 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) return; neigh_event_send(n, NULL); neigh_release(n); } } static void mlx5e_encap_dealloc(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e) { WARN_ON(!list_empty(&e->flows)); if (e->compl_result > 0) { mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e); if (e->flags & MLX5_ENCAP_ENTRY_VALID) mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat); } kfree(e->tun_info); kfree(e->encap_header); kfree_rcu(e, rcu); } void mlx5e_encap_put(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; if (!refcount_dec_and_mutex_lock(&e->refcnt, &esw->offloads.encap_tbl_lock)) return; hash_del_rcu(&e->encap_hlist); mutex_unlock(&esw->offloads.encap_tbl_lock); mlx5e_encap_dealloc(priv, e); } static void mlx5e_detach_encap(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, int out_index) { struct mlx5e_encap_entry *e = flow->encaps[out_index].e; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; /* flow wasn't fully initialized */ if (!e) return; mutex_lock(&esw->offloads.encap_tbl_lock); list_del(&flow->encaps[out_index].list); flow->encaps[out_index].e = NULL; if (!refcount_dec_and_test(&e->refcnt)) { mutex_unlock(&esw->offloads.encap_tbl_lock); return; } hash_del_rcu(&e->encap_hlist); mutex_unlock(&esw->offloads.encap_tbl_lock); mlx5e_encap_dealloc(priv, e); } static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow) { struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch; if (!flow_flag_test(flow, ESWITCH) || !flow_flag_test(flow, DUP)) return; mutex_lock(&esw->offloads.peer_mutex); list_del(&flow->peer); mutex_unlock(&esw->offloads.peer_mutex); flow_flag_clear(flow, DUP); mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow); kvfree(flow->peer_flow); flow->peer_flow = NULL; } static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow) { struct mlx5_core_dev *dev = flow->priv->mdev; struct mlx5_devcom *devcom = dev->priv.devcom; struct mlx5_eswitch *peer_esw; peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!peer_esw) return; __mlx5e_tc_del_fdb_peer_flow(flow); mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); } static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { if (mlx5e_is_eswitch_flow(flow)) { mlx5e_tc_del_fdb_peer_flow(flow); mlx5e_tc_del_fdb_flow(priv, flow); } else { mlx5e_tc_del_nic_flow(priv, flow); } } static int parse_tunnel_attr(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev, u8 *match_level) { struct netlink_ext_ack *extack = f->common.extack; 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_rule *rule = flow_cls_offload_flow_rule(f); int err; err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f, headers_c, headers_v, match_level); if (err) { NL_SET_ERR_MSG_MOD(extack, "failed to parse tunnel attributes"); return err; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL)) { struct flow_match_control match; u16 addr_type; flow_rule_match_enc_control(rule, &match); addr_type = match.key->addr_type; /* For tunnel addr_type used same key id`s as for non-tunnel */ if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { struct flow_match_ipv4_addrs match; flow_rule_match_enc_ipv4_addrs(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv4_layout.ipv4, ntohl(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv4_layout.ipv4, ntohl(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv4_layout.ipv4, ntohl(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv4_layout.ipv4, ntohl(match.key->dst)); MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP); } else if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { struct flow_match_ipv6_addrs match; flow_rule_match_enc_ipv6_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6); } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { struct flow_match_ip match; flow_rule_match_enc_ip(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, match.mask->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, match.key->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, match.mask->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, match.key->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, match.mask->ttl); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, match.key->ttl); if (match.mask->ttl && !MLX5_CAP_ESW_FLOWTABLE_FDB (priv->mdev, ft_field_support.outer_ipv4_ttl)) { NL_SET_ERR_MSG_MOD(extack, "Matching on TTL is not supported"); return -EOPNOTSUPP; } } /* 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 void *get_match_headers_criteria(u32 flags, struct mlx5_flow_spec *spec) { return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ? MLX5_ADDR_OF(fte_match_param, spec->match_criteria, inner_headers) : MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); } static void *get_match_headers_value(u32 flags, struct mlx5_flow_spec *spec) { return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ? MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers) : MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); } static int __parse_cls_flower(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev, u8 *inner_match_level, u8 *outer_match_level) { struct netlink_ext_ack *extack = f->common.extack; 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); struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct flow_dissector *dissector = rule->match.dissector; u16 addr_type = 0; u8 ip_proto = 0; u8 *match_level; match_level = outer_match_level; if (dissector->used_keys & ~(BIT(FLOW_DISSECTOR_KEY_META) | 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_CVLAN) | 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) | BIT(FLOW_DISSECTOR_KEY_TCP) | BIT(FLOW_DISSECTOR_KEY_IP) | BIT(FLOW_DISSECTOR_KEY_ENC_IP) | BIT(FLOW_DISSECTOR_KEY_ENC_OPTS))) { NL_SET_ERR_MSG_MOD(extack, "Unsupported key"); netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n", dissector->used_keys); return -EOPNOTSUPP; } if (mlx5e_get_tc_tun(filter_dev)) { if (parse_tunnel_attr(priv, spec, f, filter_dev, outer_match_level)) return -EOPNOTSUPP; /* At this point, header pointers should point to the inner * headers, outer header were already set by parse_tunnel_attr */ match_level = inner_match_level; headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP, spec); headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP, spec); } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { struct flow_match_basic match; flow_rule_match_basic(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, ntohs(match.mask->n_proto)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ntohs(match.key->n_proto)); if (match.mask->n_proto) *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || is_vlan_dev(filter_dev)) { struct flow_dissector_key_vlan filter_dev_mask; struct flow_dissector_key_vlan filter_dev_key; struct flow_match_vlan match; if (is_vlan_dev(filter_dev)) { match.key = &filter_dev_key; match.key->vlan_id = vlan_dev_vlan_id(filter_dev); match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev); match.key->vlan_priority = 0; match.mask = &filter_dev_mask; memset(match.mask, 0xff, sizeof(*match.mask)); match.mask->vlan_priority = 0; } else { flow_rule_match_vlan(rule, &match); } if (match.mask->vlan_id || match.mask->vlan_priority || match.mask->vlan_tpid) { if (match.key->vlan_tpid == htons(ETH_P_8021AD)) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, svlan_tag, 1); } else { 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, match.mask->vlan_id); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, match.key->vlan_id); MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, match.mask->vlan_priority); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, match.key->vlan_priority); *match_level = MLX5_MATCH_L2; } } else if (*match_level != MLX5_MATCH_NONE) { /* cvlan_tag enabled in match criteria and * disabled in match value means both S & C tags * don't exist (untagged of both) */ MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) { struct flow_match_vlan match; flow_rule_match_cvlan(rule, &match); if (match.mask->vlan_id || match.mask->vlan_priority || match.mask->vlan_tpid) { if (match.key->vlan_tpid == htons(ETH_P_8021AD)) { MLX5_SET(fte_match_set_misc, misc_c, outer_second_svlan_tag, 1); MLX5_SET(fte_match_set_misc, misc_v, outer_second_svlan_tag, 1); } else { MLX5_SET(fte_match_set_misc, misc_c, outer_second_cvlan_tag, 1); MLX5_SET(fte_match_set_misc, misc_v, outer_second_cvlan_tag, 1); } MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid, match.mask->vlan_id); MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid, match.key->vlan_id); MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio, match.mask->vlan_priority); MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio, match.key->vlan_priority); *match_level = MLX5_MATCH_L2; } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { struct flow_match_eth_addrs match; flow_rule_match_eth_addrs(rule, &match); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dmac_47_16), match.mask->dst); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dmac_47_16), match.key->dst); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, smac_47_16), match.mask->src); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, smac_47_16), match.key->src); if (!is_zero_ether_addr(match.mask->src) || !is_zero_ether_addr(match.mask->dst)) *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { struct flow_match_control match; flow_rule_match_control(rule, &match); addr_type = match.key->addr_type; /* the HW doesn't support frag first/later */ if (match.mask->flags & FLOW_DIS_FIRST_FRAG) return -EOPNOTSUPP; if (match.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, match.key->flags & FLOW_DIS_IS_FRAGMENT); /* the HW doesn't need L3 inline to match on frag=no */ if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT)) *match_level = MLX5_MATCH_L2; /* *** L2 attributes parsing up to here *** */ else *match_level = MLX5_MATCH_L3; } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { struct flow_match_basic match; flow_rule_match_basic(rule, &match); ip_proto = match.key->ip_proto; MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, match.mask->ip_proto); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, match.key->ip_proto); if (match.mask->ip_proto) *match_level = MLX5_MATCH_L3; } if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { struct flow_match_ipv4_addrs match; flow_rule_match_ipv4_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv4_layout.ipv4), &match.mask->src, sizeof(match.mask->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv4_layout.ipv4), &match.key->src, sizeof(match.key->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &match.mask->dst, sizeof(match.mask->dst)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &match.key->dst, sizeof(match.key->dst)); if (match.mask->src || match.mask->dst) *match_level = MLX5_MATCH_L3; } if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { struct flow_match_ipv6_addrs match; flow_rule_match_ipv6_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.mask->src, sizeof(match.mask->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.key->src, sizeof(match.key->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.mask->dst, sizeof(match.mask->dst)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.key->dst, sizeof(match.key->dst)); if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY || ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY) *match_level = MLX5_MATCH_L3; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { struct flow_match_ip match; flow_rule_match_ip(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, match.mask->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, match.key->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, match.mask->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, match.key->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, match.mask->ttl); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, match.key->ttl); if (match.mask->ttl && !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, ft_field_support.outer_ipv4_ttl)) { NL_SET_ERR_MSG_MOD(extack, "Matching on TTL is not supported"); return -EOPNOTSUPP; } if (match.mask->tos || match.mask->ttl) *match_level = MLX5_MATCH_L3; } /* *** L3 attributes parsing up to here *** */ if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { struct flow_match_ports match; flow_rule_match_ports(rule, &match); switch (ip_proto) { case IPPROTO_TCP: MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport, ntohs(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport, ntohs(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport, ntohs(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport, ntohs(match.key->dst)); break; case IPPROTO_UDP: MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport, ntohs(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport, ntohs(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport, ntohs(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, ntohs(match.key->dst)); break; default: NL_SET_ERR_MSG_MOD(extack, "Only UDP and TCP transports are supported for L4 matching"); netdev_err(priv->netdev, "Only UDP and TCP transport are supported\n"); return -EINVAL; } if (match.mask->src || match.mask->dst) *match_level = MLX5_MATCH_L4; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) { struct flow_match_tcp match; flow_rule_match_tcp(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags, ntohs(match.mask->flags)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags, ntohs(match.key->flags)); if (match.mask->flags) *match_level = MLX5_MATCH_L4; } return 0; } static int parse_cls_flower(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev) { u8 inner_match_level, outer_match_level, non_tunnel_match_level; struct netlink_ext_ack *extack = f->common.extack; 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; bool is_eswitch_flow; int err; inner_match_level = MLX5_MATCH_NONE; outer_match_level = MLX5_MATCH_NONE; err = __parse_cls_flower(priv, spec, f, filter_dev, &inner_match_level, &outer_match_level); non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ? outer_match_level : inner_match_level; is_eswitch_flow = mlx5e_is_eswitch_flow(flow); if (!err && is_eswitch_flow) { rep = rpriv->rep; if (rep->vport != MLX5_VPORT_UPLINK && (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE && esw->offloads.inline_mode < non_tunnel_match_level)) { NL_SET_ERR_MSG_MOD(extack, "Flow is not offloaded due to min inline setting"); netdev_warn(priv->netdev, "Flow is not offloaded due to min inline setting, required %d actual %d\n", non_tunnel_match_level, esw->offloads.inline_mode); return -EOPNOTSUPP; } } if (is_eswitch_flow) { flow->esw_attr->inner_match_level = inner_match_level; flow->esw_attr->outer_match_level = outer_match_level; } else { flow->nic_attr->match_level = non_tunnel_match_level; } return err; } struct pedit_headers { struct ethhdr eth; struct vlan_hdr vlan; struct iphdr ip4; struct ipv6hdr ip6; struct tcphdr tcp; struct udphdr udp; }; struct pedit_headers_action { struct pedit_headers vals; struct pedit_headers masks; u32 pedits; }; static int pedit_header_offsets[] = { [FLOW_ACT_MANGLE_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth), [FLOW_ACT_MANGLE_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4), [FLOW_ACT_MANGLE_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6), [FLOW_ACT_MANGLE_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp), [FLOW_ACT_MANGLE_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_action *hdrs) { u32 *curr_pmask, *curr_pval; curr_pmask = (u32 *)(pedit_header(&hdrs->masks, hdr_type) + offset); curr_pval = (u32 *)(pedit_header(&hdrs->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; u32 match_offset; }; #define OFFLOAD(fw_field, size, field, off, match_field) \ {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, \ offsetof(struct pedit_headers, field) + (off), \ MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)} /* masked values are the same and there are no rewrites that do not have a * match. */ #define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \ type matchmaskx = *(type *)(matchmaskp); \ type matchvalx = *(type *)(matchvalp); \ type maskx = *(type *)(maskp); \ type valx = *(type *)(valp); \ \ (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \ matchmaskx)); \ }) static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp, void *matchmaskp, int size) { bool same = false; switch (size) { case sizeof(u8): same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp); break; case sizeof(u16): same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp); break; case sizeof(u32): same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp); break; } return same; } static struct mlx5_fields fields[] = { OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0, dmac_47_16), OFFLOAD(DMAC_15_0, 2, eth.h_dest[4], 0, dmac_15_0), OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0, smac_47_16), OFFLOAD(SMAC_15_0, 2, eth.h_source[4], 0, smac_15_0), OFFLOAD(ETHERTYPE, 2, eth.h_proto, 0, ethertype), OFFLOAD(FIRST_VID, 2, vlan.h_vlan_TCI, 0, first_vid), OFFLOAD(IP_TTL, 1, ip4.ttl, 0, ttl_hoplimit), OFFLOAD(SIPV4, 4, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4), OFFLOAD(DIPV4, 4, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[0]), OFFLOAD(SIPV6_95_64, 4, ip6.saddr.s6_addr32[1], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[4]), OFFLOAD(SIPV6_63_32, 4, ip6.saddr.s6_addr32[2], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[8]), OFFLOAD(SIPV6_31_0, 4, ip6.saddr.s6_addr32[3], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[12]), OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]), OFFLOAD(DIPV6_95_64, 4, ip6.daddr.s6_addr32[1], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]), OFFLOAD(DIPV6_63_32, 4, ip6.daddr.s6_addr32[2], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]), OFFLOAD(DIPV6_31_0, 4, ip6.daddr.s6_addr32[3], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]), OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0, ttl_hoplimit), OFFLOAD(TCP_SPORT, 2, tcp.source, 0, tcp_sport), OFFLOAD(TCP_DPORT, 2, tcp.dest, 0, tcp_dport), OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5, tcp_flags), OFFLOAD(UDP_SPORT, 2, udp.source, 0, udp_sport), OFFLOAD(UDP_DPORT, 2, udp.dest, 0, udp_dport), }; /* On input attr->max_mod_hdr_actions tells how many HW actions can be parsed at * max from the SW pedit action. On success, attr->num_mod_hdr_actions * says how many HW actions were actually parsed. */ static int offload_pedit_fields(struct pedit_headers_action *hdrs, struct mlx5e_tc_flow_parse_attr *parse_attr, u32 *action_flags, struct netlink_ext_ack *extack) { struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals; void *headers_c = get_match_headers_criteria(*action_flags, &parse_attr->spec); void *headers_v = get_match_headers_value(*action_flags, &parse_attr->spec); int i, action_size, nactions, max_actions, first, last, next_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; __be32 mask_be32; __be16 mask_be16; void *action; set_masks = &hdrs[0].masks; add_masks = &hdrs[1].masks; set_vals = &hdrs[0].vals; add_vals = &hdrs[1].vals; action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); action = parse_attr->mod_hdr_actions + parse_attr->num_mod_hdr_actions * action_size; max_actions = parse_attr->max_mod_hdr_actions; nactions = parse_attr->num_mod_hdr_actions; for (i = 0; i < ARRAY_SIZE(fields); i++) { bool skip; 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) { NL_SET_ERR_MSG_MOD(extack, "can't set and add to the same HW field"); printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field); return -EOPNOTSUPP; } if (nactions == max_actions) { NL_SET_ERR_MSG_MOD(extack, "too many pedit actions, can't offload"); printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions); return -EOPNOTSUPP; } skip = false; if (s_mask) { void *match_mask = headers_c + f->match_offset; void *match_val = headers_v + f->match_offset; cmd = MLX5_ACTION_TYPE_SET; mask = s_mask; vals_p = (void *)set_vals + f->offset; /* don't rewrite if we have a match on the same value */ if (cmp_val_mask(vals_p, s_masks_p, match_val, match_mask, f->size)) skip = true; /* clear to denote we consumed this field */ memset(s_masks_p, 0, f->size); } else { u32 zero = 0; cmd = MLX5_ACTION_TYPE_ADD; mask = a_mask; vals_p = (void *)add_vals + f->offset; /* add 0 is no change */ if (!memcmp(vals_p, &zero, f->size)) skip = true; /* clear to denote we consumed this field */ memset(a_masks_p, 0, f->size); } if (skip) continue; field_bsize = f->size * BITS_PER_BYTE; if (field_bsize == 32) { mask_be32 = *(__be32 *)&mask; mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32)); } else if (field_bsize == 16) { mask_be16 = *(__be16 *)&mask; mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16)); } first = find_first_bit(&mask, field_bsize); next_z = find_next_zero_bit(&mask, field_bsize, first); last = find_last_bit(&mask, field_bsize); if (first < next_z && next_z < last) { NL_SET_ERR_MSG_MOD(extack, "rewrite of few sub-fields isn't supported"); printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't 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, first); /* length is num of bits to be written, zero means length of 32 */ MLX5_SET(set_action_in, action, length, (last - first + 1)); } if (field_bsize == 32) MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first); else if (field_bsize == 16) MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first); else if (field_bsize == 8) MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first); action += action_size; nactions++; } parse_attr->num_mod_hdr_actions = nactions; return 0; } static int mlx5e_flow_namespace_max_modify_action(struct mlx5_core_dev *mdev, int namespace) { if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */ return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions); else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */ return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions); } static int alloc_mod_hdr_actions(struct mlx5e_priv *priv, struct pedit_headers_action *hdrs, int namespace, struct mlx5e_tc_flow_parse_attr *parse_attr) { int nkeys, action_size, max_actions; nkeys = hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits + hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits; action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); max_actions = mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace); /* 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->max_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 flow_action_entry *act, int namespace, struct mlx5e_tc_flow_parse_attr *parse_attr, struct pedit_headers_action *hdrs, struct netlink_ext_ack *extack) { u8 cmd = (act->id == FLOW_ACTION_MANGLE) ? 0 : 1; int err = -EOPNOTSUPP; u32 mask, val, offset; u8 htype; htype = act->mangle.htype; err = -EOPNOTSUPP; /* can't be all optimistic */ if (htype == FLOW_ACT_MANGLE_UNSPEC) { NL_SET_ERR_MSG_MOD(extack, "legacy pedit isn't offloaded"); goto out_err; } if (!mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace)) { NL_SET_ERR_MSG_MOD(extack, "The pedit offload action is not supported"); goto out_err; } mask = act->mangle.mask; val = act->mangle.val; offset = act->mangle.offset; err = set_pedit_val(htype, ~mask, val, offset, &hdrs[cmd]); if (err) goto out_err; hdrs[cmd].pedits++; return 0; out_err: return err; } static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace, struct mlx5e_tc_flow_parse_attr *parse_attr, struct pedit_headers_action *hdrs, u32 *action_flags, struct netlink_ext_ack *extack) { struct pedit_headers *cmd_masks; int err; u8 cmd; if (!parse_attr->mod_hdr_actions) { err = alloc_mod_hdr_actions(priv, hdrs, namespace, parse_attr); if (err) goto out_err; } err = offload_pedit_fields(hdrs, parse_attr, action_flags, extack); if (err < 0) goto out_dealloc_parsed_actions; for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) { cmd_masks = &hdrs[cmd].masks; if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) { NL_SET_ERR_MSG_MOD(extack, "attempt to offload an unsupported field"); netdev_warn(priv->netdev, "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, struct netlink_ext_ack *extack) { 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)) { NL_SET_ERR_MSG_MOD(extack, "TC csum action is only offloaded with pedit"); netdev_warn(priv->netdev, "TC csum action is only offloaded with pedit\n"); return false; } if (update_flags & ~prot_flags) { NL_SET_ERR_MSG_MOD(extack, "can't offload TC csum action for some header/s"); netdev_warn(priv->netdev, "can't offload TC csum action for some header/s - flags %#x\n", update_flags); return false; } return true; } struct ip_ttl_word { __u8 ttl; __u8 protocol; __sum16 check; }; struct ipv6_hoplimit_word { __be16 payload_len; __u8 nexthdr; __u8 hop_limit; }; static bool is_action_keys_supported(const struct flow_action_entry *act) { u32 mask, offset; u8 htype; htype = act->mangle.htype; offset = act->mangle.offset; mask = ~act->mangle.mask; /* For IPv4 & IPv6 header check 4 byte word, * to determine that modified fields * are NOT ttl & hop_limit only. */ if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) { struct ip_ttl_word *ttl_word = (struct ip_ttl_word *)&mask; if (offset != offsetof(struct iphdr, ttl) || ttl_word->protocol || ttl_word->check) { return true; } } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) { struct ipv6_hoplimit_word *hoplimit_word = (struct ipv6_hoplimit_word *)&mask; if (offset != offsetof(struct ipv6hdr, payload_len) || hoplimit_word->payload_len || hoplimit_word->nexthdr) { return true; } } return false; } static bool modify_header_match_supported(struct mlx5_flow_spec *spec, struct flow_action *flow_action, u32 actions, struct netlink_ext_ack *extack) { const struct flow_action_entry *act; bool modify_ip_header; void *headers_v; u16 ethertype; u8 ip_proto; int i; headers_v = get_match_headers_value(actions, spec); ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype); /* for non-IP we only re-write MACs, so we're okay */ if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6) goto out_ok; modify_ip_header = false; flow_action_for_each(i, act, flow_action) { if (act->id != FLOW_ACTION_MANGLE && act->id != FLOW_ACTION_ADD) continue; if (is_action_keys_supported(act)) { modify_ip_header = true; break; } } ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol); if (modify_ip_header && ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) { NL_SET_ERR_MSG_MOD(extack, "can't offload re-write of non TCP/UDP"); pr_info("can't offload re-write of ip proto %d\n", ip_proto); return false; } out_ok: return true; } static bool actions_match_supported(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow_parse_attr *parse_attr, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { u32 actions; if (mlx5e_is_eswitch_flow(flow)) actions = flow->esw_attr->action; else actions = flow->nic_attr->action; if (flow_flag_test(flow, EGRESS) && !((actions & MLX5_FLOW_CONTEXT_ACTION_DECAP) || (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) || (actions & MLX5_FLOW_CONTEXT_ACTION_DROP))) return false; if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) return modify_header_match_supported(&parse_attr->spec, flow_action, actions, extack); return true; } static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv) { struct mlx5_core_dev *fmdev, *pmdev; u64 fsystem_guid, psystem_guid; fmdev = priv->mdev; pmdev = peer_priv->mdev; fsystem_guid = mlx5_query_nic_system_image_guid(fmdev); psystem_guid = mlx5_query_nic_system_image_guid(pmdev); return (fsystem_guid == psystem_guid); } static int add_vlan_rewrite_action(struct mlx5e_priv *priv, int namespace, const struct flow_action_entry *act, struct mlx5e_tc_flow_parse_attr *parse_attr, struct pedit_headers_action *hdrs, u32 *action, struct netlink_ext_ack *extack) { u16 mask16 = VLAN_VID_MASK; u16 val16 = act->vlan.vid & VLAN_VID_MASK; const struct flow_action_entry pedit_act = { .id = FLOW_ACTION_MANGLE, .mangle.htype = FLOW_ACT_MANGLE_HDR_TYPE_ETH, .mangle.offset = offsetof(struct vlan_ethhdr, h_vlan_TCI), .mangle.mask = ~(u32)be16_to_cpu(*(__be16 *)&mask16), .mangle.val = (u32)be16_to_cpu(*(__be16 *)&val16), }; u8 match_prio_mask, match_prio_val; void *headers_c, *headers_v; int err; headers_c = get_match_headers_criteria(*action, &parse_attr->spec); headers_v = get_match_headers_value(*action, &parse_attr->spec); if (!(MLX5_GET(fte_match_set_lyr_2_4, headers_c, cvlan_tag) && MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag))) { NL_SET_ERR_MSG_MOD(extack, "VLAN rewrite action must have VLAN protocol match"); return -EOPNOTSUPP; } match_prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio); match_prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio); if (act->vlan.prio != (match_prio_val & match_prio_mask)) { NL_SET_ERR_MSG_MOD(extack, "Changing VLAN prio is not supported"); return -EOPNOTSUPP; } err = parse_tc_pedit_action(priv, &pedit_act, namespace, parse_attr, hdrs, NULL); *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; return err; } static int add_vlan_prio_tag_rewrite_action(struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct pedit_headers_action *hdrs, u32 *action, struct netlink_ext_ack *extack) { const struct flow_action_entry prio_tag_act = { .vlan.vid = 0, .vlan.prio = MLX5_GET(fte_match_set_lyr_2_4, get_match_headers_value(*action, &parse_attr->spec), first_prio) & MLX5_GET(fte_match_set_lyr_2_4, get_match_headers_criteria(*action, &parse_attr->spec), first_prio), }; return add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB, &prio_tag_act, parse_attr, hdrs, action, extack); } static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow_parse_attr *parse_attr, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5_nic_flow_attr *attr = flow->nic_attr; struct pedit_headers_action hdrs[2] = {}; const struct flow_action_entry *act; u32 action = 0; int err, i; if (!flow_action_has_entries(flow_action)) return -EINVAL; attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; flow_action_for_each(i, act, flow_action) { switch (act->id) { case FLOW_ACTION_DROP: action |= MLX5_FLOW_CONTEXT_ACTION_DROP; if (MLX5_CAP_FLOWTABLE(priv->mdev, flow_table_properties_nic_receive.flow_counter)) action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; break; case FLOW_ACTION_MANGLE: case FLOW_ACTION_ADD: err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_KERNEL, parse_attr, hdrs, extack); if (err) return err; action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR | MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; break; case FLOW_ACTION_VLAN_MANGLE: err = add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_KERNEL, act, parse_attr, hdrs, &action, extack); if (err) return err; break; case FLOW_ACTION_CSUM: if (csum_offload_supported(priv, action, act->csum_flags, extack)) break; return -EOPNOTSUPP; case FLOW_ACTION_REDIRECT: { struct net_device *peer_dev = act->dev; if (priv->netdev->netdev_ops == peer_dev->netdev_ops && same_hw_devs(priv, netdev_priv(peer_dev))) { parse_attr->mirred_ifindex[0] = peer_dev->ifindex; flow_flag_set(flow, HAIRPIN); action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_COUNT; } else { NL_SET_ERR_MSG_MOD(extack, "device is not on same HW, can't offload"); netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n", peer_dev->name); return -EINVAL; } } break; case FLOW_ACTION_MARK: { u32 mark = act->mark; if (mark & ~MLX5E_TC_FLOW_ID_MASK) { NL_SET_ERR_MSG_MOD(extack, "Bad flow mark - only 16 bit is supported"); return -EINVAL; } attr->flow_tag = mark; action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; } break; default: NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported"); return -EOPNOTSUPP; } } if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits || hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) { err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL, parse_attr, hdrs, &action, extack); if (err) return err; /* in case all pedit actions are skipped, remove the MOD_HDR * flag. */ if (parse_attr->num_mod_hdr_actions == 0) { action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; kfree(parse_attr->mod_hdr_actions); } } attr->action = action; if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack)) return -EOPNOTSUPP; return 0; } struct encap_key { const struct ip_tunnel_key *ip_tun_key; struct mlx5e_tc_tunnel *tc_tunnel; }; static inline int cmp_encap_info(struct encap_key *a, struct encap_key *b) { return memcmp(a->ip_tun_key, b->ip_tun_key, sizeof(*a->ip_tun_key)) || a->tc_tunnel->tunnel_type != b->tc_tunnel->tunnel_type; } static inline int hash_encap_info(struct encap_key *key) { return jhash(key->ip_tun_key, sizeof(*key->ip_tun_key), key->tc_tunnel->tunnel_type); } static bool is_merged_eswitch_dev(struct mlx5e_priv *priv, struct net_device *peer_netdev) { struct mlx5e_priv *peer_priv; peer_priv = netdev_priv(peer_netdev); return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) && mlx5e_eswitch_rep(priv->netdev) && mlx5e_eswitch_rep(peer_netdev) && same_hw_devs(priv, peer_priv)); } bool mlx5e_encap_take(struct mlx5e_encap_entry *e) { return refcount_inc_not_zero(&e->refcnt); } static struct mlx5e_encap_entry * mlx5e_encap_get(struct mlx5e_priv *priv, struct encap_key *key, uintptr_t hash_key) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5e_encap_entry *e; struct encap_key e_key; hash_for_each_possible_rcu(esw->offloads.encap_tbl, e, encap_hlist, hash_key) { e_key.ip_tun_key = &e->tun_info->key; e_key.tc_tunnel = e->tunnel; if (!cmp_encap_info(&e_key, key) && mlx5e_encap_take(e)) return e; } return NULL; } static struct ip_tunnel_info *dup_tun_info(const struct ip_tunnel_info *tun_info) { size_t tun_size = sizeof(*tun_info) + tun_info->options_len; return kmemdup(tun_info, tun_size, GFP_KERNEL); } static int mlx5e_attach_encap(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct net_device *mirred_dev, int out_index, struct netlink_ext_ack *extack, struct net_device **encap_dev, bool *encap_valid) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr *attr = flow->esw_attr; struct mlx5e_tc_flow_parse_attr *parse_attr; const struct ip_tunnel_info *tun_info; struct encap_key key; struct mlx5e_encap_entry *e; unsigned short family; uintptr_t hash_key; int err = 0; parse_attr = attr->parse_attr; tun_info = parse_attr->tun_info[out_index]; family = ip_tunnel_info_af(tun_info); key.ip_tun_key = &tun_info->key; key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev); if (!key.tc_tunnel) { NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel"); return -EOPNOTSUPP; } hash_key = hash_encap_info(&key); mutex_lock(&esw->offloads.encap_tbl_lock); e = mlx5e_encap_get(priv, &key, hash_key); /* must verify if encap is valid or not */ if (e) { mutex_unlock(&esw->offloads.encap_tbl_lock); wait_for_completion(&e->res_ready); /* Protect against concurrent neigh update. */ mutex_lock(&esw->offloads.encap_tbl_lock); if (e->compl_result < 0) { err = -EREMOTEIO; goto out_err; } goto attach_flow; } e = kzalloc(sizeof(*e), GFP_KERNEL); if (!e) { err = -ENOMEM; goto out_err; } refcount_set(&e->refcnt, 1); init_completion(&e->res_ready); tun_info = dup_tun_info(tun_info); if (!tun_info) { err = -ENOMEM; goto out_err_init; } e->tun_info = tun_info; err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack); if (err) goto out_err_init; INIT_LIST_HEAD(&e->flows); hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key); mutex_unlock(&esw->offloads.encap_tbl_lock); if (family == AF_INET) err = mlx5e_tc_tun_create_header_ipv4(priv, mirred_dev, e); else if (family == AF_INET6) err = mlx5e_tc_tun_create_header_ipv6(priv, mirred_dev, e); /* Protect against concurrent neigh update. */ mutex_lock(&esw->offloads.encap_tbl_lock); complete_all(&e->res_ready); if (err) { e->compl_result = err; goto out_err; } e->compl_result = 1; attach_flow: flow->encaps[out_index].e = e; list_add(&flow->encaps[out_index].list, &e->flows); flow->encaps[out_index].index = out_index; *encap_dev = e->out_dev; if (e->flags & MLX5_ENCAP_ENTRY_VALID) { attr->dests[out_index].pkt_reformat = e->pkt_reformat; attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID; *encap_valid = true; } else { *encap_valid = false; } mutex_unlock(&esw->offloads.encap_tbl_lock); return err; out_err: mutex_unlock(&esw->offloads.encap_tbl_lock); if (e) mlx5e_encap_put(priv, e); return err; out_err_init: mutex_unlock(&esw->offloads.encap_tbl_lock); kfree(tun_info); kfree(e); return err; } static int parse_tc_vlan_action(struct mlx5e_priv *priv, const struct flow_action_entry *act, struct mlx5_esw_flow_attr *attr, u32 *action) { u8 vlan_idx = attr->total_vlan; if (vlan_idx >= MLX5_FS_VLAN_DEPTH) return -EOPNOTSUPP; switch (act->id) { case FLOW_ACTION_VLAN_POP: if (vlan_idx) { if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, MLX5_FS_VLAN_DEPTH)) return -EOPNOTSUPP; *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2; } else { *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP; } break; case FLOW_ACTION_VLAN_PUSH: attr->vlan_vid[vlan_idx] = act->vlan.vid; attr->vlan_prio[vlan_idx] = act->vlan.prio; attr->vlan_proto[vlan_idx] = act->vlan.proto; if (!attr->vlan_proto[vlan_idx]) attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q); if (vlan_idx) { if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, MLX5_FS_VLAN_DEPTH)) return -EOPNOTSUPP; *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2; } else { if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) && (act->vlan.proto != htons(ETH_P_8021Q) || act->vlan.prio)) return -EOPNOTSUPP; *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH; } break; default: return -EINVAL; } attr->total_vlan = vlan_idx + 1; return 0; } static int add_vlan_push_action(struct mlx5e_priv *priv, struct mlx5_esw_flow_attr *attr, struct net_device **out_dev, u32 *action) { struct net_device *vlan_dev = *out_dev; struct flow_action_entry vlan_act = { .id = FLOW_ACTION_VLAN_PUSH, .vlan.vid = vlan_dev_vlan_id(vlan_dev), .vlan.proto = vlan_dev_vlan_proto(vlan_dev), .vlan.prio = 0, }; int err; err = parse_tc_vlan_action(priv, &vlan_act, attr, action); if (err) return err; *out_dev = dev_get_by_index_rcu(dev_net(vlan_dev), dev_get_iflink(vlan_dev)); if (is_vlan_dev(*out_dev)) err = add_vlan_push_action(priv, attr, out_dev, action); return err; } static int add_vlan_pop_action(struct mlx5e_priv *priv, struct mlx5_esw_flow_attr *attr, u32 *action) { int nest_level = attr->parse_attr->filter_dev->lower_level; struct flow_action_entry vlan_act = { .id = FLOW_ACTION_VLAN_POP, }; int err = 0; while (nest_level--) { err = parse_tc_vlan_action(priv, &vlan_act, attr, action); if (err) return err; } return err; } bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv, struct net_device *out_dev) { if (is_merged_eswitch_dev(priv, out_dev)) return true; return mlx5e_eswitch_rep(out_dev) && same_hw_devs(priv, netdev_priv(out_dev)); } static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct pedit_headers_action hdrs[2] = {}; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr *attr = flow->esw_attr; struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr; struct mlx5e_rep_priv *rpriv = priv->ppriv; const struct ip_tunnel_info *info = NULL; const struct flow_action_entry *act; bool encap = false; u32 action = 0; int err, i; if (!flow_action_has_entries(flow_action)) return -EINVAL; flow_action_for_each(i, act, flow_action) { switch (act->id) { case FLOW_ACTION_DROP: action |= MLX5_FLOW_CONTEXT_ACTION_DROP | MLX5_FLOW_CONTEXT_ACTION_COUNT; break; case FLOW_ACTION_MANGLE: case FLOW_ACTION_ADD: err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB, parse_attr, hdrs, extack); if (err) return err; action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; attr->split_count = attr->out_count; break; case FLOW_ACTION_CSUM: if (csum_offload_supported(priv, action, act->csum_flags, extack)) break; return -EOPNOTSUPP; case FLOW_ACTION_REDIRECT: case FLOW_ACTION_MIRRED: { struct mlx5e_priv *out_priv; struct net_device *out_dev; out_dev = act->dev; if (!out_dev) { /* out_dev is NULL when filters with * non-existing mirred device are replayed to * the driver. */ return -EINVAL; } if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) { NL_SET_ERR_MSG_MOD(extack, "can't support more output ports, can't offload forwarding"); pr_err("can't support more than %d output ports, can't offload forwarding\n", attr->out_count); return -EOPNOTSUPP; } action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_COUNT; if (encap) { parse_attr->mirred_ifindex[attr->out_count] = out_dev->ifindex; parse_attr->tun_info[attr->out_count] = dup_tun_info(info); if (!parse_attr->tun_info[attr->out_count]) return -ENOMEM; encap = false; attr->dests[attr->out_count].flags |= MLX5_ESW_DEST_ENCAP; attr->out_count++; /* attr->dests[].rep is resolved when we * handle encap */ } else if (netdev_port_same_parent_id(priv->netdev, out_dev)) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH); struct net_device *uplink_upper; rcu_read_lock(); uplink_upper = netdev_master_upper_dev_get_rcu(uplink_dev); if (uplink_upper && netif_is_lag_master(uplink_upper) && uplink_upper == out_dev) out_dev = uplink_dev; rcu_read_unlock(); if (is_vlan_dev(out_dev)) { err = add_vlan_push_action(priv, attr, &out_dev, &action); if (err) return err; } if (is_vlan_dev(parse_attr->filter_dev)) { err = add_vlan_pop_action(priv, attr, &action); if (err) return err; } if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) { NL_SET_ERR_MSG_MOD(extack, "devices are not on same switch HW, can't offload forwarding"); pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", priv->netdev->name, out_dev->name); return -EOPNOTSUPP; } out_priv = netdev_priv(out_dev); rpriv = out_priv->ppriv; attr->dests[attr->out_count].rep = rpriv->rep; attr->dests[attr->out_count].mdev = out_priv->mdev; attr->out_count++; } else if (parse_attr->filter_dev != priv->netdev) { /* All mlx5 devices are called to configure * high level device filters. Therefore, the * *attempt* to install a filter on invalid * eswitch should not trigger an explicit error */ return -EINVAL; } else { NL_SET_ERR_MSG_MOD(extack, "devices are not on same switch HW, can't offload forwarding"); pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", priv->netdev->name, out_dev->name); return -EINVAL; } } break; case FLOW_ACTION_TUNNEL_ENCAP: info = act->tunnel; if (info) encap = true; else return -EOPNOTSUPP; break; case FLOW_ACTION_VLAN_PUSH: case FLOW_ACTION_VLAN_POP: if (act->id == FLOW_ACTION_VLAN_PUSH && (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)) { /* Replace vlan pop+push with vlan modify */ action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP; err = add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB, act, parse_attr, hdrs, &action, extack); } else { err = parse_tc_vlan_action(priv, act, attr, &action); } if (err) return err; attr->split_count = attr->out_count; break; case FLOW_ACTION_VLAN_MANGLE: err = add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB, act, parse_attr, hdrs, &action, extack); if (err) return err; attr->split_count = attr->out_count; break; case FLOW_ACTION_TUNNEL_DECAP: action |= MLX5_FLOW_CONTEXT_ACTION_DECAP; break; case FLOW_ACTION_GOTO: { u32 dest_chain = act->chain_index; u32 max_chain = mlx5_eswitch_get_chain_range(esw); if (dest_chain <= attr->chain) { NL_SET_ERR_MSG(extack, "Goto earlier chain isn't supported"); return -EOPNOTSUPP; } if (dest_chain > max_chain) { NL_SET_ERR_MSG(extack, "Requested destination chain is out of supported range"); return -EOPNOTSUPP; } action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; attr->dest_chain = dest_chain; break; } default: NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported"); return -EOPNOTSUPP; } } if (MLX5_CAP_GEN(esw->dev, prio_tag_required) && action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) { /* For prio tag mode, replace vlan pop with rewrite vlan prio * tag rewrite. */ action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP; err = add_vlan_prio_tag_rewrite_action(priv, parse_attr, hdrs, &action, extack); if (err) return err; } if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits || hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) { err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB, parse_attr, hdrs, &action, extack); if (err) return err; /* in case all pedit actions are skipped, remove the MOD_HDR * flag. we might have set split_count either by pedit or * pop/push. if there is no pop/push either, reset it too. */ if (parse_attr->num_mod_hdr_actions == 0) { action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; kfree(parse_attr->mod_hdr_actions); if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) || (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH))) attr->split_count = 0; } } attr->action = action; if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack)) return -EOPNOTSUPP; if (attr->dest_chain) { if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) { NL_SET_ERR_MSG(extack, "Mirroring goto chain rules isn't supported"); return -EOPNOTSUPP; } attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; } if (attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) { NL_SET_ERR_MSG_MOD(extack, "current firmware doesn't support split rule for port mirroring"); netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n"); return -EOPNOTSUPP; } return 0; } static void get_flags(int flags, unsigned long *flow_flags) { unsigned long __flow_flags = 0; if (flags & MLX5_TC_FLAG(INGRESS)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS); if (flags & MLX5_TC_FLAG(EGRESS)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS); if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH); if (flags & MLX5_TC_FLAG(NIC_OFFLOAD)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC); *flow_flags = __flow_flags; } static const struct rhashtable_params tc_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, }; static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv, unsigned long flags) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5e_rep_priv *uplink_rpriv; if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); return &uplink_rpriv->uplink_priv.tc_ht; } else /* NIC offload */ return &priv->fs.tc.ht; } static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow) { struct mlx5_esw_flow_attr *attr = flow->esw_attr; bool is_rep_ingress = attr->in_rep->vport != MLX5_VPORT_UPLINK && flow_flag_test(flow, INGRESS); bool act_is_encap = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT); bool esw_paired = mlx5_devcom_is_paired(attr->in_mdev->priv.devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!esw_paired) return false; if ((mlx5_lag_is_sriov(attr->in_mdev) || mlx5_lag_is_multipath(attr->in_mdev)) && (is_rep_ingress || act_is_encap)) return true; return false; } static int mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size, struct flow_cls_offload *f, unsigned long flow_flags, struct mlx5e_tc_flow_parse_attr **__parse_attr, struct mlx5e_tc_flow **__flow) { struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_flow *flow; int out_index, err; flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL); parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL); if (!parse_attr || !flow) { err = -ENOMEM; goto err_free; } flow->cookie = f->cookie; flow->flags = flow_flags; flow->priv = priv; for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) INIT_LIST_HEAD(&flow->encaps[out_index].list); INIT_LIST_HEAD(&flow->mod_hdr); INIT_LIST_HEAD(&flow->hairpin); refcount_set(&flow->refcnt, 1); init_completion(&flow->init_done); *__flow = flow; *__parse_attr = parse_attr; return 0; err_free: kfree(flow); kvfree(parse_attr); return err; } static void mlx5e_flow_esw_attr_init(struct mlx5_esw_flow_attr *esw_attr, struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct flow_cls_offload *f, struct mlx5_eswitch_rep *in_rep, struct mlx5_core_dev *in_mdev) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; esw_attr->parse_attr = parse_attr; esw_attr->chain = f->common.chain_index; esw_attr->prio = f->common.prio; esw_attr->in_rep = in_rep; esw_attr->in_mdev = in_mdev; if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) == MLX5_COUNTER_SOURCE_ESWITCH) esw_attr->counter_dev = in_mdev; else esw_attr->counter_dev = priv->mdev; } static struct mlx5e_tc_flow * __mlx5e_add_fdb_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5_eswitch_rep *in_rep, struct mlx5_core_dev *in_mdev) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_flow *flow; int attr_size, err; flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH); attr_size = sizeof(struct mlx5_esw_flow_attr); err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags, &parse_attr, &flow); if (err) goto out; parse_attr->filter_dev = filter_dev; mlx5e_flow_esw_attr_init(flow->esw_attr, priv, parse_attr, f, in_rep, in_mdev); err = parse_cls_flower(flow->priv, flow, &parse_attr->spec, f, filter_dev); if (err) goto err_free; err = parse_tc_fdb_actions(priv, &rule->action, flow, extack); if (err) goto err_free; err = mlx5e_tc_add_fdb_flow(priv, flow, extack); complete_all(&flow->init_done); if (err) { if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev))) goto err_free; add_unready_flow(flow); } return flow; err_free: mlx5e_flow_put(priv, flow); out: return ERR_PTR(err); } static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f, struct mlx5e_tc_flow *flow, unsigned long flow_flags) { struct mlx5e_priv *priv = flow->priv, *peer_priv; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw; struct mlx5_devcom *devcom = priv->mdev->priv.devcom; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_rep_priv *peer_urpriv; struct mlx5e_tc_flow *peer_flow; struct mlx5_core_dev *in_mdev; int err = 0; peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!peer_esw) return -ENODEV; peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH); peer_priv = netdev_priv(peer_urpriv->netdev); /* in_mdev is assigned of which the packet originated from. * So packets redirected to uplink use the same mdev of the * original flow and packets redirected from uplink use the * peer mdev. */ if (flow->esw_attr->in_rep->vport == MLX5_VPORT_UPLINK) in_mdev = peer_priv->mdev; else in_mdev = priv->mdev; parse_attr = flow->esw_attr->parse_attr; peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags, parse_attr->filter_dev, flow->esw_attr->in_rep, in_mdev); if (IS_ERR(peer_flow)) { err = PTR_ERR(peer_flow); goto out; } flow->peer_flow = peer_flow; flow_flag_set(flow, DUP); mutex_lock(&esw->offloads.peer_mutex); list_add_tail(&flow->peer, &esw->offloads.peer_flows); mutex_unlock(&esw->offloads.peer_mutex); out: mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); return err; } static int mlx5e_add_fdb_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5e_tc_flow **__flow) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *in_rep = rpriv->rep; struct mlx5_core_dev *in_mdev = priv->mdev; struct mlx5e_tc_flow *flow; int err; flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep, in_mdev); if (IS_ERR(flow)) return PTR_ERR(flow); if (is_peer_flow_needed(flow)) { err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags); if (err) { mlx5e_tc_del_fdb_flow(priv, flow); goto out; } } *__flow = flow; return 0; out: return err; } static int mlx5e_add_nic_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5e_tc_flow **__flow) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_flow *flow; int attr_size, err; /* multi-chain not supported for NIC rules */ if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common)) return -EOPNOTSUPP; flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC); attr_size = sizeof(struct mlx5_nic_flow_attr); err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags, &parse_attr, &flow); if (err) goto out; parse_attr->filter_dev = filter_dev; err = parse_cls_flower(flow->priv, flow, &parse_attr->spec, f, filter_dev); if (err) goto err_free; err = parse_tc_nic_actions(priv, &rule->action, parse_attr, flow, extack); if (err) goto err_free; err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack); if (err) goto err_free; flow_flag_set(flow, OFFLOADED); kvfree(parse_attr); *__flow = flow; return 0; err_free: mlx5e_flow_put(priv, flow); kvfree(parse_attr); out: return err; } static int mlx5e_tc_add_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags, struct net_device *filter_dev, struct mlx5e_tc_flow **flow) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; unsigned long flow_flags; int err; get_flags(flags, &flow_flags); if (!tc_can_offload_extack(priv->netdev, f->common.extack)) return -EOPNOTSUPP; if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS) err = mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, flow); else err = mlx5e_add_nic_flow(priv, f, flow_flags, filter_dev, flow); return err; } int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct netlink_ext_ack *extack = f->common.extack; struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5e_tc_flow *flow; int err = 0; rcu_read_lock(); flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params); rcu_read_unlock(); if (flow) { NL_SET_ERR_MSG_MOD(extack, "flow cookie already exists, ignoring"); netdev_warn_once(priv->netdev, "flow cookie %lx already exists, ignoring\n", f->cookie); err = -EEXIST; goto out; } trace_mlx5e_configure_flower(f); err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow); if (err) goto out; err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params); if (err) goto err_free; return 0; err_free: mlx5e_flow_put(priv, flow); out: return err; } static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags) { bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS)); bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS)); return flow_flag_test(flow, INGRESS) == dir_ingress && flow_flag_test(flow, EGRESS) == dir_egress; } int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5e_tc_flow *flow; int err; rcu_read_lock(); flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params); if (!flow || !same_flow_direction(flow, flags)) { err = -EINVAL; goto errout; } /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag * set. */ if (flow_flag_test_and_set(flow, DELETED)) { err = -EINVAL; goto errout; } rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params); rcu_read_unlock(); trace_mlx5e_delete_flower(f); mlx5e_flow_put(priv, flow); return 0; errout: rcu_read_unlock(); return err; } int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct mlx5_devcom *devcom = priv->mdev->priv.devcom; struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5_eswitch *peer_esw; struct mlx5e_tc_flow *flow; struct mlx5_fc *counter; u64 lastuse = 0; u64 packets = 0; u64 bytes = 0; int err = 0; rcu_read_lock(); flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params)); rcu_read_unlock(); if (IS_ERR(flow)) return PTR_ERR(flow); if (!same_flow_direction(flow, flags)) { err = -EINVAL; goto errout; } if (mlx5e_is_offloaded_flow(flow)) { counter = mlx5e_tc_get_counter(flow); if (!counter) goto errout; mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); } /* Under multipath it's possible for one rule to be currently * un-offloaded while the other rule is offloaded. */ peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!peer_esw) goto out; if (flow_flag_test(flow, DUP) && flow_flag_test(flow->peer_flow, OFFLOADED)) { u64 bytes2; u64 packets2; u64 lastuse2; counter = mlx5e_tc_get_counter(flow->peer_flow); if (!counter) goto no_peer_counter; mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2); bytes += bytes2; packets += packets2; lastuse = max_t(u64, lastuse, lastuse2); } no_peer_counter: mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); out: flow_stats_update(&f->stats, bytes, packets, lastuse); trace_mlx5e_stats_flower(f); errout: mlx5e_flow_put(priv, flow); return err; } static int apply_police_params(struct mlx5e_priv *priv, u32 rate, struct netlink_ext_ack *extack) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch *esw; u16 vport_num; u32 rate_mbps; int err; esw = priv->mdev->priv.eswitch; /* rate is given in bytes/sec. * First convert to bits/sec and then round to the nearest mbit/secs. * mbit means million bits. * Moreover, if rate is non zero we choose to configure to a minimum of * 1 mbit/sec. */ rate_mbps = rate ? max_t(u32, (rate * 8 + 500000) / 1000000, 1) : 0; vport_num = rpriv->rep->vport; err = mlx5_esw_modify_vport_rate(esw, vport_num, rate_mbps); if (err) NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware"); return err; } static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct netlink_ext_ack *extack) { struct mlx5e_rep_priv *rpriv = priv->ppriv; const struct flow_action_entry *act; int err; int i; if (!flow_action_has_entries(flow_action)) { NL_SET_ERR_MSG_MOD(extack, "matchall called with no action"); return -EINVAL; } if (!flow_offload_has_one_action(flow_action)) { NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action"); return -EOPNOTSUPP; } flow_action_for_each(i, act, flow_action) { switch (act->id) { case FLOW_ACTION_POLICE: err = apply_police_params(priv, act->police.rate_bytes_ps, extack); if (err) return err; rpriv->prev_vf_vport_stats = priv->stats.vf_vport; break; default: NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall"); return -EOPNOTSUPP; } } return 0; } int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct netlink_ext_ack *extack = ma->common.extack; if (ma->common.prio != 1) { NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported"); return -EINVAL; } return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack); } int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct netlink_ext_ack *extack = ma->common.extack; return apply_police_params(priv, 0, extack); } void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct rtnl_link_stats64 cur_stats; u64 dbytes; u64 dpkts; cur_stats = priv->stats.vf_vport; dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets; dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes; rpriv->prev_vf_vport_stats = cur_stats; flow_stats_update(&ma->stats, dpkts, dbytes, jiffies); } static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv) { struct mlx5_core_dev *peer_mdev = peer_priv->mdev; struct mlx5e_hairpin_entry *hpe, *tmp; LIST_HEAD(init_wait_list); u16 peer_vhca_id; int bkt; if (!same_hw_devs(priv, peer_priv)) return; peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id); mutex_lock(&priv->fs.tc.hairpin_tbl_lock); hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist) if (refcount_inc_not_zero(&hpe->refcnt)) list_add(&hpe->dead_peer_wait_list, &init_wait_list); mutex_unlock(&priv->fs.tc.hairpin_tbl_lock); list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) { wait_for_completion(&hpe->res_ready); if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id) hpe->hp->pair->peer_gone = true; mlx5e_hairpin_put(priv, hpe); } } static int mlx5e_tc_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *ndev = netdev_notifier_info_to_dev(ptr); struct mlx5e_flow_steering *fs; struct mlx5e_priv *peer_priv; struct mlx5e_tc_table *tc; struct mlx5e_priv *priv; if (ndev->netdev_ops != &mlx5e_netdev_ops || event != NETDEV_UNREGISTER || ndev->reg_state == NETREG_REGISTERED) return NOTIFY_DONE; tc = container_of(this, struct mlx5e_tc_table, netdevice_nb); fs = container_of(tc, struct mlx5e_flow_steering, tc); priv = container_of(fs, struct mlx5e_priv, fs); peer_priv = netdev_priv(ndev); if (priv == peer_priv || !(priv->netdev->features & NETIF_F_HW_TC)) return NOTIFY_DONE; mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv); return NOTIFY_DONE; } int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = &priv->fs.tc; int err; mutex_init(&tc->t_lock); mutex_init(&tc->mod_hdr.lock); hash_init(tc->mod_hdr.hlist); mutex_init(&tc->hairpin_tbl_lock); hash_init(tc->hairpin_tbl); err = rhashtable_init(&tc->ht, &tc_ht_params); if (err) return err; tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event; if (register_netdevice_notifier(&tc->netdevice_nb)) { tc->netdevice_nb.notifier_call = NULL; mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n"); } return err; } static void _mlx5e_tc_del_flow(void *ptr, void *arg) { struct mlx5e_tc_flow *flow = ptr; struct mlx5e_priv *priv = flow->priv; mlx5e_tc_del_flow(priv, flow); kfree(flow); } void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = &priv->fs.tc; if (tc->netdevice_nb.notifier_call) unregister_netdevice_notifier(&tc->netdevice_nb); mutex_destroy(&tc->mod_hdr.lock); mutex_destroy(&tc->hairpin_tbl_lock); rhashtable_destroy(&tc->ht); if (!IS_ERR_OR_NULL(tc->t)) { mlx5_destroy_flow_table(tc->t); tc->t = NULL; } mutex_destroy(&tc->t_lock); } int mlx5e_tc_esw_init(struct rhashtable *tc_ht) { return rhashtable_init(tc_ht, &tc_ht_params); } void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht) { rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL); } int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags) { struct rhashtable *tc_ht = get_tc_ht(priv, flags); return atomic_read(&tc_ht->nelems); } void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw) { struct mlx5e_tc_flow *flow, *tmp; list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer) __mlx5e_tc_del_fdb_peer_flow(flow); } void mlx5e_tc_reoffload_flows_work(struct work_struct *work) { struct mlx5_rep_uplink_priv *rpriv = container_of(work, struct mlx5_rep_uplink_priv, reoffload_flows_work); struct mlx5e_tc_flow *flow, *tmp; mutex_lock(&rpriv->unready_flows_lock); list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) { if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL)) unready_flow_del(flow); } mutex_unlock(&rpriv->unready_flows_lock); }
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