| /* |
| * Copyright (c) 2016, Mellanox Technologies. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <net/flow_dissector.h> |
| #include <net/sch_generic.h> |
| #include <net/pkt_cls.h> |
| #include <net/tc_act/tc_gact.h> |
| #include <net/tc_act/tc_skbedit.h> |
| #include <linux/mlx5/fs.h> |
| #include <linux/mlx5/device.h> |
| #include <linux/rhashtable.h> |
| #include <net/switchdev.h> |
| #include <net/tc_act/tc_mirred.h> |
| #include <net/tc_act/tc_vlan.h> |
| #include <net/tc_act/tc_tunnel_key.h> |
| #include <net/tc_act/tc_pedit.h> |
| #include <net/tc_act/tc_csum.h> |
| #include <net/arp.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" |
| |
| struct mlx5_nic_flow_attr { |
| u32 action; |
| u32 flow_tag; |
| u32 mod_hdr_id; |
| u32 hairpin_tirn; |
| u8 match_level; |
| struct mlx5_flow_table *hairpin_ft; |
| struct mlx5_fc *counter; |
| }; |
| |
| #define MLX5E_TC_FLOW_BASE (MLX5E_TC_LAST_EXPORTED_BIT + 1) |
| |
| enum { |
| MLX5E_TC_FLOW_INGRESS = MLX5E_TC_INGRESS, |
| MLX5E_TC_FLOW_EGRESS = MLX5E_TC_EGRESS, |
| MLX5E_TC_FLOW_ESWITCH = MLX5E_TC_ESW_OFFLOAD, |
| MLX5E_TC_FLOW_NIC = MLX5E_TC_NIC_OFFLOAD, |
| MLX5E_TC_FLOW_OFFLOADED = BIT(MLX5E_TC_FLOW_BASE), |
| MLX5E_TC_FLOW_HAIRPIN = BIT(MLX5E_TC_FLOW_BASE + 1), |
| MLX5E_TC_FLOW_HAIRPIN_RSS = BIT(MLX5E_TC_FLOW_BASE + 2), |
| MLX5E_TC_FLOW_SLOW = BIT(MLX5E_TC_FLOW_BASE + 3), |
| MLX5E_TC_FLOW_DUP = BIT(MLX5E_TC_FLOW_BASE + 4), |
| }; |
| |
| #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 list_head list; |
| int index; |
| }; |
| |
| struct mlx5e_tc_flow { |
| struct rhash_head node; |
| struct mlx5e_priv *priv; |
| u64 cookie; |
| u16 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 list_head mod_hdr; /* flows sharing the same mod hdr ID */ |
| struct list_head hairpin; /* flows sharing the same hairpin */ |
| struct list_head peer; /* flows with peer flow */ |
| union { |
| struct mlx5_esw_flow_attr esw_attr[0]; |
| struct mlx5_nic_flow_attr nic_attr[0]; |
| }; |
| }; |
| |
| struct mlx5e_tc_flow_parse_attr { |
| 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; |
| 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; |
| |
| /* flows sharing the same hairpin */ |
| struct list_head flows; |
| |
| u16 peer_vhca_id; |
| u8 prio; |
| struct mlx5e_hairpin *hp; |
| }; |
| |
| 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; |
| |
| /* flows sharing the same mod_hdr entry */ |
| struct list_head flows; |
| |
| struct mod_hdr_key key; |
| |
| u32 mod_hdr_id; |
| }; |
| |
| #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto) |
| |
| 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 int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow, |
| struct mlx5e_tc_flow_parse_attr *parse_attr) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| int num_actions, actions_size, namespace, err; |
| struct mlx5e_mod_hdr_entry *mh; |
| struct mod_hdr_key key; |
| bool found = false; |
| 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); |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) { |
| namespace = MLX5_FLOW_NAMESPACE_FDB; |
| hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh, |
| mod_hdr_hlist, hash_key) { |
| if (!cmp_mod_hdr_info(&mh->key, &key)) { |
| found = true; |
| break; |
| } |
| } |
| } else { |
| namespace = MLX5_FLOW_NAMESPACE_KERNEL; |
| hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh, |
| mod_hdr_hlist, hash_key) { |
| if (!cmp_mod_hdr_info(&mh->key, &key)) { |
| found = true; |
| break; |
| } |
| } |
| } |
| |
| if (found) |
| goto attach_flow; |
| |
| mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL); |
| if (!mh) |
| return -ENOMEM; |
| |
| mh->key.actions = (void *)mh + sizeof(*mh); |
| memcpy(mh->key.actions, key.actions, actions_size); |
| mh->key.num_actions = num_actions; |
| INIT_LIST_HEAD(&mh->flows); |
| |
| err = mlx5_modify_header_alloc(priv->mdev, namespace, |
| mh->key.num_actions, |
| mh->key.actions, |
| &mh->mod_hdr_id); |
| if (err) |
| goto out_err; |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key); |
| else |
| hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key); |
| |
| attach_flow: |
| list_add(&flow->mod_hdr, &mh->flows); |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| flow->esw_attr->mod_hdr_id = mh->mod_hdr_id; |
| else |
| flow->nic_attr->mod_hdr_id = mh->mod_hdr_id; |
| |
| return 0; |
| |
| out_err: |
| kfree(mh); |
| return err; |
| } |
| |
| static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct list_head *next = flow->mod_hdr.next; |
| |
| list_del(&flow->mod_hdr); |
| |
| if (list_empty(next)) { |
| struct mlx5e_mod_hdr_entry *mh; |
| |
| mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows); |
| |
| mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id); |
| hash_del(&mh->mod_hdr_hlist); |
| kfree(mh); |
| } |
| } |
| |
| 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) |
| return hpe; |
| } |
| |
| return NULL; |
| } |
| |
| #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; |
| hpe = mlx5e_hairpin_get(priv, peer_id, match_prio); |
| if (hpe) |
| goto attach_flow; |
| |
| hpe = kzalloc(sizeof(*hpe), GFP_KERNEL); |
| if (!hpe) |
| return -ENOMEM; |
| |
| INIT_LIST_HEAD(&hpe->flows); |
| hpe->peer_vhca_id = peer_id; |
| hpe->prio = match_prio; |
| |
| 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); |
| if (IS_ERR(hp)) { |
| err = PTR_ERR(hp); |
| goto create_hairpin_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], hp->pair->peer_mdev->priv.name, |
| hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets); |
| |
| hpe->hp = hp; |
| hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist, |
| hash_hairpin_info(peer_id, match_prio)); |
| |
| attach_flow: |
| if (hpe->hp->num_channels > 1) { |
| flow->flags |= MLX5E_TC_FLOW_HAIRPIN_RSS; |
| flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t; |
| } else { |
| flow->nic_attr->hairpin_tirn = hpe->hp->tirn; |
| } |
| list_add(&flow->hairpin, &hpe->flows); |
| |
| return 0; |
| |
| create_hairpin_err: |
| kfree(hpe); |
| return err; |
| } |
| |
| static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| struct list_head *next = flow->hairpin.next; |
| |
| list_del(&flow->hairpin); |
| |
| /* no more hairpin flows for us, release the hairpin pair */ |
| if (list_empty(next)) { |
| struct mlx5e_hairpin_entry *hpe; |
| |
| hpe = list_entry(next, struct mlx5e_hairpin_entry, flows); |
| |
| netdev_dbg(priv->netdev, "del hairpin: peer %s\n", |
| hpe->hp->pair->peer_mdev->priv.name); |
| |
| mlx5e_hairpin_destroy(hpe->hp); |
| hash_del(&hpe->hairpin_hlist); |
| kfree(hpe); |
| } |
| } |
| |
| 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_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, |
| .flow_tag = attr->flow_tag, |
| .reformat_id = 0, |
| .flags = FLOW_ACT_HAS_TAG | FLOW_ACT_NO_APPEND, |
| }; |
| struct mlx5_fc *counter = NULL; |
| bool table_created = false; |
| int err, dest_ix = 0; |
| |
| if (flow->flags & MLX5E_TC_FLOW_HAIRPIN) { |
| err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack); |
| if (err) { |
| goto err_add_hairpin_flow; |
| } |
| if (flow->flags & MLX5E_TC_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)) { |
| err = PTR_ERR(counter); |
| goto err_fc_create; |
| } |
| 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_id = attr->mod_hdr_id; |
| kfree(parse_attr->mod_hdr_actions); |
| if (err) |
| goto err_create_mod_hdr_id; |
| } |
| |
| 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)) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "Failed to create tc offload table\n"); |
| netdev_err(priv->netdev, |
| "Failed to create tc offload table\n"); |
| err = PTR_ERR(priv->fs.tc.t); |
| goto err_create_ft; |
| } |
| |
| table_created = true; |
| } |
| |
| 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); |
| |
| if (IS_ERR(flow->rule[0])) { |
| err = PTR_ERR(flow->rule[0]); |
| goto err_add_rule; |
| } |
| |
| return 0; |
| |
| err_add_rule: |
| if (table_created) { |
| mlx5_destroy_flow_table(priv->fs.tc.t); |
| priv->fs.tc.t = NULL; |
| } |
| err_create_ft: |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5e_detach_mod_hdr(priv, flow); |
| err_create_mod_hdr_id: |
| mlx5_fc_destroy(dev, counter); |
| err_fc_create: |
| if (flow->flags & MLX5E_TC_FLOW_HAIRPIN) |
| mlx5e_hairpin_flow_del(priv, flow); |
| err_add_hairpin_flow: |
| return err; |
| } |
| |
| 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; |
| mlx5_del_flow_rules(flow->rule[0]); |
| mlx5_fc_destroy(priv->mdev, counter); |
| |
| if (!mlx5e_tc_num_filters(priv, MLX5E_TC_NIC_OFFLOAD) && priv->fs.tc.t) { |
| mlx5_destroy_flow_table(priv->fs.tc.t); |
| priv->fs.tc.t = NULL; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5e_detach_mod_hdr(priv, flow); |
| |
| if (flow->flags & MLX5E_TC_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 ip_tunnel_info *tun_info, |
| struct net_device *mirred_dev, |
| struct net_device **encap_dev, |
| struct mlx5e_tc_flow *flow, |
| struct netlink_ext_ack *extack, |
| int out_index); |
| |
| 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]; |
| } |
| } |
| |
| flow->flags |= MLX5E_TC_FLOW_OFFLOADED; |
| 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->flags &= ~MLX5E_TC_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->flags |= MLX5E_TC_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->flags &= ~MLX5E_TC_FLOW_SLOW; |
| } |
| |
| static int |
| mlx5e_tc_add_fdb_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_eswitch *esw = priv->mdev->priv.eswitch; |
| u32 max_chain = mlx5_eswitch_get_chain_range(esw); |
| struct mlx5_esw_flow_attr *attr = flow->esw_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; |
| int err = 0, encap_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"); |
| err = -EOPNOTSUPP; |
| goto err_max_prio_chain; |
| } |
| |
| if (attr->prio > max_prio) { |
| NL_SET_ERR_MSG(extack, "Requested priority is out of supported range"); |
| err = -EOPNOTSUPP; |
| goto err_max_prio_chain; |
| } |
| |
| 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 = attr->parse_attr->mirred_ifindex[out_index]; |
| out_dev = __dev_get_by_index(dev_net(priv->netdev), |
| mirred_ifindex); |
| err = mlx5e_attach_encap(priv, |
| &parse_attr->tun_info[out_index], |
| out_dev, &encap_dev, flow, |
| extack, out_index); |
| if (err && err != -EAGAIN) |
| goto err_attach_encap; |
| if (err == -EAGAIN) |
| encap_err = 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) |
| goto err_add_vlan; |
| |
| 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) |
| goto err_mod_hdr; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { |
| counter = mlx5_fc_create(attr->counter_dev, true); |
| if (IS_ERR(counter)) { |
| err = PTR_ERR(counter); |
| goto err_create_counter; |
| } |
| |
| attr->counter = counter; |
| } |
| |
| /* we get here if (1) there's no error or when |
| * (2) there's an encap action and we're on -EAGAIN (no valid neigh) |
| */ |
| if (encap_err == -EAGAIN) { |
| /* 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])) { |
| err = PTR_ERR(flow->rule[0]); |
| goto err_add_rule; |
| } |
| |
| return 0; |
| |
| err_add_rule: |
| mlx5_fc_destroy(attr->counter_dev, counter); |
| err_create_counter: |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| mlx5e_detach_mod_hdr(priv, flow); |
| err_mod_hdr: |
| mlx5_eswitch_del_vlan_action(esw, attr); |
| err_add_vlan: |
| 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); |
| err_attach_encap: |
| err_max_prio_chain: |
| return err; |
| } |
| |
| 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->flags & MLX5E_TC_FLOW_OFFLOADED) { |
| if (flow->flags & MLX5E_TC_FLOW_SLOW) |
| mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr); |
| else |
| mlx5e_tc_unoffload_fdb_rules(esw, flow, attr); |
| } |
| |
| 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); |
| 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 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 encap_flow_item *efi; |
| struct mlx5e_tc_flow *flow; |
| int err; |
| |
| err = mlx5_packet_reformat_alloc(priv->mdev, |
| e->reformat_type, |
| e->encap_size, e->encap_header, |
| MLX5_FLOW_NAMESPACE_FDB, |
| &e->encap_id); |
| if (err) { |
| mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n", |
| err); |
| return; |
| } |
| e->flags |= MLX5_ENCAP_ENTRY_VALID; |
| mlx5e_rep_queue_neigh_stats_work(priv); |
| |
| list_for_each_entry(efi, &e->flows, list) { |
| bool all_flow_encaps_valid = true; |
| int i; |
| |
| flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]); |
| esw_attr = flow->esw_attr; |
| spec = &esw_attr->parse_attr->spec; |
| |
| esw_attr->dests[efi->index].encap_id = e->encap_id; |
| esw_attr->dests[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->flags |= MLX5E_TC_FLOW_OFFLOADED; /* was unset when slow path rule removed */ |
| flow->rule[0] = rule; |
| } |
| } |
| |
| void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv, |
| struct mlx5e_encap_entry *e) |
| { |
| 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 encap_flow_item *efi; |
| struct mlx5e_tc_flow *flow; |
| int err; |
| |
| list_for_each_entry(efi, &e->flows, list) { |
| flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]); |
| 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[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->flags |= MLX5E_TC_FLOW_OFFLOADED; /* was unset when fast path rule removed */ |
| flow->rule[0] = rule; |
| } |
| |
| /* we know that the encap is valid */ |
| e->flags &= ~MLX5_ENCAP_ENTRY_VALID; |
| mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id); |
| } |
| |
| static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow) |
| { |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| return flow->esw_attr->counter; |
| else |
| return flow->nic_attr->counter; |
| } |
| |
| void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe) |
| { |
| struct mlx5e_neigh *m_neigh = &nhe->m_neigh; |
| u64 bytes, packets, lastuse = 0; |
| struct mlx5e_tc_flow *flow; |
| struct mlx5e_encap_entry *e; |
| struct mlx5_fc *counter; |
| struct neigh_table *tbl; |
| bool neigh_used = false; |
| struct neighbour *n; |
| |
| if (m_neigh->family == AF_INET) |
| tbl = &arp_tbl; |
| #if IS_ENABLED(CONFIG_IPV6) |
| else if (m_neigh->family == AF_INET6) |
| tbl = &nd_tbl; |
| #endif |
| else |
| return; |
| |
| list_for_each_entry(e, &nhe->encap_list, encap_list) { |
| struct encap_flow_item *efi; |
| if (!(e->flags & MLX5_ENCAP_ENTRY_VALID)) |
| continue; |
| list_for_each_entry(efi, &e->flows, list) { |
| flow = container_of(efi, struct mlx5e_tc_flow, |
| encaps[efi->index]); |
| if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) { |
| counter = mlx5e_tc_get_counter(flow); |
| mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); |
| if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) { |
| neigh_used = true; |
| break; |
| } |
| } |
| } |
| if (neigh_used) |
| break; |
| } |
| |
| if (neigh_used) { |
| nhe->reported_lastuse = jiffies; |
| |
| /* find the relevant neigh according to the cached device and |
| * dst ip pair |
| */ |
| n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev); |
| if (!n) |
| return; |
| |
| neigh_event_send(n, NULL); |
| neigh_release(n); |
| } |
| } |
| |
| static void mlx5e_detach_encap(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow, int out_index) |
| { |
| struct list_head *next = flow->encaps[out_index].list.next; |
| |
| list_del(&flow->encaps[out_index].list); |
| if (list_empty(next)) { |
| struct mlx5e_encap_entry *e; |
| |
| e = list_entry(next, struct mlx5e_encap_entry, flows); |
| mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e); |
| |
| if (e->flags & MLX5_ENCAP_ENTRY_VALID) |
| mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id); |
| |
| hash_del_rcu(&e->encap_hlist); |
| kfree(e->encap_header); |
| kfree(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->flags & MLX5E_TC_FLOW_ESWITCH) || |
| !(flow->flags & MLX5E_TC_FLOW_DUP)) |
| return; |
| |
| mutex_lock(&esw->offloads.peer_mutex); |
| list_del(&flow->peer); |
| mutex_unlock(&esw->offloads.peer_mutex); |
| |
| flow->flags &= ~MLX5E_TC_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 (flow->flags & MLX5E_TC_FLOW_ESWITCH) { |
| 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 tc_cls_flower_offload *f, |
| struct net_device *filter_dev) |
| { |
| 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_dissector_key_control *enc_control = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_CONTROL, |
| f->key); |
| int err = 0; |
| |
| err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f, |
| headers_c, headers_v); |
| if (err) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "failed to parse tunnel attributes"); |
| return err; |
| } |
| |
| if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { |
| struct flow_dissector_key_ipv4_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv4_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, |
| f->mask); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4, |
| ntohl(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4, |
| ntohl(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4, |
| ntohl(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4, |
| ntohl(key->dst)); |
| |
| MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP); |
| } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { |
| struct flow_dissector_key_ipv6_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv6_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6)); |
| |
| MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6); |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_IP)) { |
| struct flow_dissector_key_ip *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IP, |
| f->key); |
| struct flow_dissector_key_ip *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IP, |
| f->mask); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos >> 2); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl); |
| |
| if (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 int __parse_cls_flower(struct mlx5e_priv *priv, |
| struct mlx5_flow_spec *spec, |
| struct tc_cls_flower_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); |
| 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); |
| u16 addr_type = 0; |
| u8 ip_proto = 0; |
| |
| *match_level = MLX5_MATCH_NONE; |
| |
| if (f->dissector->used_keys & |
| ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | |
| BIT(FLOW_DISSECTOR_KEY_BASIC) | |
| BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | |
| BIT(FLOW_DISSECTOR_KEY_VLAN) | |
| BIT(FLOW_DISSECTOR_KEY_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))) { |
| NL_SET_ERR_MSG_MOD(extack, "Unsupported key"); |
| netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n", |
| f->dissector->used_keys); |
| return -EOPNOTSUPP; |
| } |
| |
| if ((dissector_uses_key(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) || |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) || |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) && |
| dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) { |
| struct flow_dissector_key_control *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ENC_CONTROL, |
| f->key); |
| switch (key->addr_type) { |
| case FLOW_DISSECTOR_KEY_IPV4_ADDRS: |
| case FLOW_DISSECTOR_KEY_IPV6_ADDRS: |
| if (parse_tunnel_attr(priv, spec, f, filter_dev)) |
| return -EOPNOTSUPP; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| |
| /* In decap flow, header pointers should point to the inner |
| * headers, outer header were already set by parse_tunnel_attr |
| */ |
| headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, |
| inner_headers); |
| headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, |
| inner_headers); |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) { |
| struct flow_dissector_key_basic *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->key); |
| struct flow_dissector_key_basic *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->mask); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, |
| ntohs(mask->n_proto)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, |
| ntohs(key->n_proto)); |
| |
| if (mask->n_proto) |
| *match_level = MLX5_MATCH_L2; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) { |
| struct flow_dissector_key_vlan *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_VLAN, |
| f->key); |
| struct flow_dissector_key_vlan *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_VLAN, |
| f->mask); |
| if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) { |
| if (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, mask->vlan_id); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority); |
| |
| *match_level = MLX5_MATCH_L2; |
| } |
| } else if (*match_level != MLX5_MATCH_NONE) { |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); |
| *match_level = MLX5_MATCH_L2; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CVLAN)) { |
| struct flow_dissector_key_vlan *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CVLAN, |
| f->key); |
| struct flow_dissector_key_vlan *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CVLAN, |
| f->mask); |
| if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) { |
| if (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, |
| mask->vlan_id); |
| MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid, |
| key->vlan_id); |
| MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio, |
| mask->vlan_priority); |
| MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio, |
| key->vlan_priority); |
| |
| *match_level = MLX5_MATCH_L2; |
| } |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { |
| struct flow_dissector_key_eth_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| f->key); |
| struct flow_dissector_key_eth_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| f->mask); |
| |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dmac_47_16), |
| mask->dst); |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dmac_47_16), |
| key->dst); |
| |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| smac_47_16), |
| mask->src); |
| ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| smac_47_16), |
| key->src); |
| |
| if (!is_zero_ether_addr(mask->src) || !is_zero_ether_addr(mask->dst)) |
| *match_level = MLX5_MATCH_L2; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) { |
| struct flow_dissector_key_control *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CONTROL, |
| f->key); |
| |
| struct flow_dissector_key_control *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_CONTROL, |
| f->mask); |
| addr_type = key->addr_type; |
| |
| /* the HW doesn't support frag first/later */ |
| if (mask->flags & FLOW_DIS_FIRST_FRAG) |
| return -EOPNOTSUPP; |
| |
| if (mask->flags & FLOW_DIS_IS_FRAGMENT) { |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, |
| key->flags & FLOW_DIS_IS_FRAGMENT); |
| |
| /* the HW doesn't need L3 inline to match on frag=no */ |
| if (!(key->flags & FLOW_DIS_IS_FRAGMENT)) |
| *match_level = MLX5_MATCH_L2; |
| /* *** L2 attributes parsing up to here *** */ |
| else |
| *match_level = MLX5_MATCH_L3; |
| } |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) { |
| struct flow_dissector_key_basic *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->key); |
| struct flow_dissector_key_basic *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_BASIC, |
| f->mask); |
| ip_proto = key->ip_proto; |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, |
| mask->ip_proto); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, |
| key->ip_proto); |
| |
| if (mask->ip_proto) |
| *match_level = MLX5_MATCH_L3; |
| } |
| |
| if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { |
| struct flow_dissector_key_ipv4_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv4_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| &mask->src, sizeof(mask->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| &key->src, sizeof(key->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| &mask->dst, sizeof(mask->dst)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| &key->dst, sizeof(key->dst)); |
| |
| if (mask->src || mask->dst) |
| *match_level = MLX5_MATCH_L3; |
| } |
| |
| if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { |
| struct flow_dissector_key_ipv6_addrs *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| f->key); |
| struct flow_dissector_key_ipv6_addrs *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| f->mask); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &mask->src, sizeof(mask->src)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| &key->src, sizeof(key->src)); |
| |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &mask->dst, sizeof(mask->dst)); |
| memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| &key->dst, sizeof(key->dst)); |
| |
| if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY || |
| ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY) |
| *match_level = MLX5_MATCH_L3; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) { |
| struct flow_dissector_key_ip *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IP, |
| f->key); |
| struct flow_dissector_key_ip *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_IP, |
| f->mask); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos >> 2); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl); |
| |
| if (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 (mask->tos || mask->ttl) |
| *match_level = MLX5_MATCH_L3; |
| } |
| |
| /* *** L3 attributes parsing up to here *** */ |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) { |
| struct flow_dissector_key_ports *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_PORTS, |
| f->key); |
| struct flow_dissector_key_ports *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_PORTS, |
| f->mask); |
| switch (ip_proto) { |
| case IPPROTO_TCP: |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| tcp_sport, ntohs(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| tcp_sport, ntohs(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| tcp_dport, ntohs(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| tcp_dport, ntohs(key->dst)); |
| break; |
| |
| case IPPROTO_UDP: |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_sport, ntohs(mask->src)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_sport, ntohs(key->src)); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| udp_dport, ntohs(mask->dst)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| udp_dport, ntohs(key->dst)); |
| break; |
| default: |
| 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 (mask->src || mask->dst) |
| *match_level = MLX5_MATCH_L4; |
| } |
| |
| if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) { |
| struct flow_dissector_key_tcp *key = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_TCP, |
| f->key); |
| struct flow_dissector_key_tcp *mask = |
| skb_flow_dissector_target(f->dissector, |
| FLOW_DISSECTOR_KEY_TCP, |
| f->mask); |
| |
| MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags, |
| ntohs(mask->flags)); |
| MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags, |
| ntohs(key->flags)); |
| |
| if (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 tc_cls_flower_offload *f, |
| struct net_device *filter_dev) |
| { |
| 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; |
| u8 match_level; |
| int err; |
| |
| err = __parse_cls_flower(priv, spec, f, filter_dev, &match_level); |
| |
| if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) { |
| rep = rpriv->rep; |
| if (rep->vport != FDB_UPLINK_VPORT && |
| (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE && |
| esw->offloads.inline_mode < 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", |
| match_level, esw->offloads.inline_mode); |
| return -EOPNOTSUPP; |
| } |
| } |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| flow->esw_attr->match_level = match_level; |
| else |
| flow->nic_attr->match_level = match_level; |
| |
| return err; |
| } |
| |
| struct pedit_headers { |
| struct ethhdr eth; |
| struct iphdr ip4; |
| struct ipv6hdr ip6; |
| struct tcphdr tcp; |
| struct udphdr udp; |
| }; |
| |
| static int pedit_header_offsets[] = { |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp), |
| [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp), |
| }; |
| |
| #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype]) |
| |
| static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset, |
| struct pedit_headers *masks, |
| struct pedit_headers *vals) |
| { |
| u32 *curr_pmask, *curr_pval; |
| |
| if (hdr_type >= __PEDIT_HDR_TYPE_MAX) |
| goto out_err; |
| |
| curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset); |
| curr_pval = (u32 *)(pedit_header(vals, hdr_type) + offset); |
| |
| if (*curr_pmask & mask) /* disallow acting twice on the same location */ |
| goto out_err; |
| |
| *curr_pmask |= mask; |
| *curr_pval |= (val & mask); |
| |
| return 0; |
| |
| out_err: |
| return -EOPNOTSUPP; |
| } |
| |
| struct mlx5_fields { |
| u8 field; |
| u8 size; |
| u32 offset; |
| }; |
| |
| #define OFFLOAD(fw_field, size, field, off) \ |
| {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, offsetof(struct pedit_headers, field) + (off)} |
| |
| static struct mlx5_fields fields[] = { |
| OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0), |
| OFFLOAD(DMAC_15_0, 2, eth.h_dest[4], 0), |
| OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0), |
| OFFLOAD(SMAC_15_0, 2, eth.h_source[4], 0), |
| OFFLOAD(ETHERTYPE, 2, eth.h_proto, 0), |
| |
| OFFLOAD(IP_TTL, 1, ip4.ttl, 0), |
| OFFLOAD(SIPV4, 4, ip4.saddr, 0), |
| OFFLOAD(DIPV4, 4, ip4.daddr, 0), |
| |
| OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0), |
| OFFLOAD(SIPV6_95_64, 4, ip6.saddr.s6_addr32[1], 0), |
| OFFLOAD(SIPV6_63_32, 4, ip6.saddr.s6_addr32[2], 0), |
| OFFLOAD(SIPV6_31_0, 4, ip6.saddr.s6_addr32[3], 0), |
| OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0), |
| OFFLOAD(DIPV6_95_64, 4, ip6.daddr.s6_addr32[1], 0), |
| OFFLOAD(DIPV6_63_32, 4, ip6.daddr.s6_addr32[2], 0), |
| OFFLOAD(DIPV6_31_0, 4, ip6.daddr.s6_addr32[3], 0), |
| OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0), |
| |
| OFFLOAD(TCP_SPORT, 2, tcp.source, 0), |
| OFFLOAD(TCP_DPORT, 2, tcp.dest, 0), |
| OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5), |
| |
| OFFLOAD(UDP_SPORT, 2, udp.source, 0), |
| OFFLOAD(UDP_DPORT, 2, udp.dest, 0), |
| }; |
| |
| /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at |
| * max from the SW pedit action. On success, it says how many HW actions were |
| * actually parsed. |
| */ |
| static int offload_pedit_fields(struct pedit_headers *masks, |
| struct pedit_headers *vals, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct netlink_ext_ack *extack) |
| { |
| struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals; |
| 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 = &masks[TCA_PEDIT_KEY_EX_CMD_SET]; |
| add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD]; |
| set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET]; |
| add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD]; |
| |
| action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); |
| action = parse_attr->mod_hdr_actions; |
| max_actions = parse_attr->num_mod_hdr_actions; |
| nactions = 0; |
| |
| for (i = 0; i < ARRAY_SIZE(fields); i++) { |
| f = &fields[i]; |
| /* avoid seeing bits set from previous iterations */ |
| s_mask = 0; |
| a_mask = 0; |
| |
| s_masks_p = (void *)set_masks + f->offset; |
| a_masks_p = (void *)add_masks + f->offset; |
| |
| memcpy(&s_mask, s_masks_p, f->size); |
| memcpy(&a_mask, a_masks_p, f->size); |
| |
| if (!s_mask && !a_mask) /* nothing to offload here */ |
| continue; |
| |
| if (s_mask && a_mask) { |
| 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; |
| } |
| |
| if (s_mask) { |
| cmd = MLX5_ACTION_TYPE_SET; |
| mask = s_mask; |
| vals_p = (void *)set_vals + f->offset; |
| /* clear to denote we consumed this field */ |
| memset(s_masks_p, 0, f->size); |
| } else { |
| cmd = MLX5_ACTION_TYPE_ADD; |
| mask = a_mask; |
| vals_p = (void *)add_vals + f->offset; |
| /* clear to denote we consumed this field */ |
| memset(a_masks_p, 0, f->size); |
| } |
| |
| field_bsize = f->size * BITS_PER_BYTE; |
| |
| 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 alloc_mod_hdr_actions(struct mlx5e_priv *priv, |
| const struct tc_action *a, int namespace, |
| struct mlx5e_tc_flow_parse_attr *parse_attr) |
| { |
| int nkeys, action_size, max_actions; |
| |
| nkeys = tcf_pedit_nkeys(a); |
| action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto); |
| |
| if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */ |
| max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions); |
| else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */ |
| max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions); |
| |
| /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */ |
| max_actions = min(max_actions, nkeys * 16); |
| |
| parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL); |
| if (!parse_attr->mod_hdr_actions) |
| return -ENOMEM; |
| |
| parse_attr->num_mod_hdr_actions = max_actions; |
| return 0; |
| } |
| |
| static const struct pedit_headers zero_masks = {}; |
| |
| static int parse_tc_pedit_action(struct mlx5e_priv *priv, |
| const struct tc_action *a, int namespace, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct netlink_ext_ack *extack) |
| { |
| struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks; |
| int nkeys, i, err = -EOPNOTSUPP; |
| u32 mask, val, offset; |
| u8 cmd, htype; |
| |
| nkeys = tcf_pedit_nkeys(a); |
| |
| memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX); |
| memset(vals, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX); |
| |
| for (i = 0; i < nkeys; i++) { |
| htype = tcf_pedit_htype(a, i); |
| cmd = tcf_pedit_cmd(a, i); |
| err = -EOPNOTSUPP; /* can't be all optimistic */ |
| |
| if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) { |
| NL_SET_ERR_MSG_MOD(extack, |
| "legacy pedit isn't offloaded"); |
| goto out_err; |
| } |
| |
| if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) { |
| NL_SET_ERR_MSG_MOD(extack, "pedit cmd isn't offloaded"); |
| goto out_err; |
| } |
| |
| mask = tcf_pedit_mask(a, i); |
| val = tcf_pedit_val(a, i); |
| offset = tcf_pedit_offset(a, i); |
| |
| err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]); |
| if (err) |
| goto out_err; |
| } |
| |
| err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr); |
| if (err) |
| goto out_err; |
| |
| err = offload_pedit_fields(masks, vals, parse_attr, extack); |
| if (err < 0) |
| goto out_dealloc_parsed_actions; |
| |
| for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) { |
| cmd_masks = &masks[cmd]; |
| if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) { |
| 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; |
| } |
| |
| static bool modify_header_match_supported(struct mlx5_flow_spec *spec, |
| struct tcf_exts *exts, |
| struct netlink_ext_ack *extack) |
| { |
| const struct tc_action *a; |
| bool modify_ip_header; |
| u8 htype, ip_proto; |
| void *headers_v; |
| u16 ethertype; |
| int nkeys, i; |
| |
| headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); |
| 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; |
| tcf_exts_for_each_action(i, a, exts) { |
| int k; |
| |
| if (!is_tcf_pedit(a)) |
| continue; |
| |
| nkeys = tcf_pedit_nkeys(a); |
| for (k = 0; k < nkeys; k++) { |
| htype = tcf_pedit_htype(a, k); |
| if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 || |
| htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP6) { |
| 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 tcf_exts *exts, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow, |
| struct netlink_ext_ack *extack) |
| { |
| u32 actions; |
| |
| if (flow->flags & MLX5E_TC_FLOW_ESWITCH) |
| actions = flow->esw_attr->action; |
| else |
| actions = flow->nic_attr->action; |
| |
| if (flow->flags & MLX5E_TC_FLOW_EGRESS && |
| !(actions & MLX5_FLOW_CONTEXT_ACTION_DECAP)) |
| return false; |
| |
| if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) |
| return modify_header_match_supported(&parse_attr->spec, exts, |
| 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 parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlx5_nic_flow_attr *attr = flow->nic_attr; |
| const struct tc_action *a; |
| u32 action = 0; |
| int err, i; |
| |
| if (!tcf_exts_has_actions(exts)) |
| return -EINVAL; |
| |
| attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; |
| |
| tcf_exts_for_each_action(i, a, exts) { |
| if (is_tcf_gact_shot(a)) { |
| 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; |
| continue; |
| } |
| |
| if (is_tcf_pedit(a)) { |
| err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL, |
| parse_attr, extack); |
| if (err) |
| return err; |
| |
| action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR | |
| MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| continue; |
| } |
| |
| if (is_tcf_csum(a)) { |
| if (csum_offload_supported(priv, action, |
| tcf_csum_update_flags(a), |
| extack)) |
| continue; |
| |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_tcf_mirred_egress_redirect(a)) { |
| struct net_device *peer_dev = tcf_mirred_dev(a); |
| |
| 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->flags |= MLX5E_TC_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; |
| } |
| continue; |
| } |
| |
| if (is_tcf_skbedit_mark(a)) { |
| u32 mark = tcf_skbedit_mark(a); |
| |
| 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; |
| continue; |
| } |
| |
| return -EINVAL; |
| } |
| |
| attr->action = action; |
| if (!actions_match_supported(priv, exts, parse_attr, flow, extack)) |
| return -EOPNOTSUPP; |
| |
| return 0; |
| } |
| |
| static inline int cmp_encap_info(struct ip_tunnel_key *a, |
| struct ip_tunnel_key *b) |
| { |
| return memcmp(a, b, sizeof(*a)); |
| } |
| |
| static inline int hash_encap_info(struct ip_tunnel_key *key) |
| { |
| return jhash(key, sizeof(*key), 0); |
| } |
| |
| |
| static 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) && |
| (priv->netdev->netdev_ops == peer_netdev->netdev_ops) && |
| same_hw_devs(priv, peer_priv) && |
| MLX5_VPORT_MANAGER(peer_priv->mdev) && |
| (peer_priv->mdev->priv.eswitch->mode == SRIOV_OFFLOADS)); |
| } |
| |
| |
| |
| static int mlx5e_attach_encap(struct mlx5e_priv *priv, |
| struct ip_tunnel_info *tun_info, |
| struct net_device *mirred_dev, |
| struct net_device **encap_dev, |
| struct mlx5e_tc_flow *flow, |
| struct netlink_ext_ack *extack, |
| int out_index) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| unsigned short family = ip_tunnel_info_af(tun_info); |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| struct ip_tunnel_key *key = &tun_info->key; |
| struct mlx5e_encap_entry *e; |
| uintptr_t hash_key; |
| bool found = false; |
| int err = 0; |
| |
| hash_key = hash_encap_info(key); |
| |
| hash_for_each_possible_rcu(esw->offloads.encap_tbl, e, |
| encap_hlist, hash_key) { |
| if (!cmp_encap_info(&e->tun_info.key, key)) { |
| found = true; |
| break; |
| } |
| } |
| |
| /* must verify if encap is valid or not */ |
| if (found) |
| goto attach_flow; |
| |
| e = kzalloc(sizeof(*e), GFP_KERNEL); |
| if (!e) |
| return -ENOMEM; |
| |
| e->tun_info = *tun_info; |
| err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack); |
| if (err) |
| goto out_err; |
| |
| INIT_LIST_HEAD(&e->flows); |
| |
| 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); |
| |
| if (err && err != -EAGAIN) |
| goto out_err; |
| |
| hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key); |
| |
| attach_flow: |
| 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].encap_id = e->encap_id; |
| attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID; |
| } else { |
| err = -EAGAIN; |
| } |
| |
| return err; |
| |
| out_err: |
| kfree(e); |
| return err; |
| } |
| |
| static int parse_tc_vlan_action(struct mlx5e_priv *priv, |
| const struct tc_action *a, |
| struct mlx5_esw_flow_attr *attr, |
| u32 *action) |
| { |
| u8 vlan_idx = attr->total_vlan; |
| |
| if (vlan_idx >= MLX5_FS_VLAN_DEPTH) |
| return -EOPNOTSUPP; |
| |
| if (tcf_vlan_action(a) == TCA_VLAN_ACT_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; |
| } |
| } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) { |
| attr->vlan_vid[vlan_idx] = tcf_vlan_push_vid(a); |
| attr->vlan_prio[vlan_idx] = tcf_vlan_push_prio(a); |
| attr->vlan_proto[vlan_idx] = tcf_vlan_push_proto(a); |
| 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) && |
| (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q) || |
| tcf_vlan_push_prio(a))) |
| return -EOPNOTSUPP; |
| |
| *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH; |
| } |
| } else { /* action is TCA_VLAN_ACT_MODIFY */ |
| return -EOPNOTSUPP; |
| } |
| |
| attr->total_vlan = vlan_idx + 1; |
| |
| return 0; |
| } |
| |
| static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| struct mlx5e_tc_flow_parse_attr *parse_attr, |
| struct mlx5e_tc_flow *flow, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5_esw_flow_attr *attr = flow->esw_attr; |
| struct mlx5e_rep_priv *rpriv = priv->ppriv; |
| struct ip_tunnel_info *info = NULL; |
| const struct tc_action *a; |
| bool encap = false; |
| u32 action = 0; |
| int err, i; |
| |
| if (!tcf_exts_has_actions(exts)) |
| return -EINVAL; |
| |
| attr->in_rep = rpriv->rep; |
| attr->in_mdev = priv->mdev; |
| |
| tcf_exts_for_each_action(i, a, exts) { |
| if (is_tcf_gact_shot(a)) { |
| action |= MLX5_FLOW_CONTEXT_ACTION_DROP | |
| MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| continue; |
| } |
| |
| if (is_tcf_pedit(a)) { |
| err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB, |
| parse_attr, extack); |
| if (err) |
| return err; |
| |
| action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; |
| attr->split_count = attr->out_count; |
| continue; |
| } |
| |
| if (is_tcf_csum(a)) { |
| if (csum_offload_supported(priv, action, |
| tcf_csum_update_flags(a), |
| extack)) |
| continue; |
| |
| return -EOPNOTSUPP; |
| } |
| |
| if (is_tcf_mirred_egress_redirect(a) || is_tcf_mirred_egress_mirror(a)) { |
| struct mlx5e_priv *out_priv; |
| struct net_device *out_dev; |
| |
| out_dev = tcf_mirred_dev(a); |
| 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 (switchdev_port_same_parent_id(priv->netdev, |
| out_dev) || |
| is_merged_eswitch_dev(priv, 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 = netdev_master_upper_dev_get(uplink_dev); |
| |
| if (uplink_upper && |
| netif_is_lag_master(uplink_upper) && |
| uplink_upper == out_dev) |
| out_dev = uplink_dev; |
| |
| if (!mlx5e_eswitch_rep(out_dev)) |
| 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 (encap) { |
| parse_attr->mirred_ifindex[attr->out_count] = |
| out_dev->ifindex; |
| parse_attr->tun_info[attr->out_count] = *info; |
| encap = false; |
| attr->parse_attr = parse_attr; |
| attr->dests[attr->out_count].flags |= |
| MLX5_ESW_DEST_ENCAP; |
| attr->out_count++; |
| /* attr->dests[].rep is resolved when we |
| * handle encap |
| */ |
| } 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; |
| } |
| continue; |
| } |
| |
| if (is_tcf_tunnel_set(a)) { |
| info = tcf_tunnel_info(a); |
| if (info) |
| encap = true; |
| else |
| return -EOPNOTSUPP; |
| continue; |
| } |
| |
| if (is_tcf_vlan(a)) { |
| err = parse_tc_vlan_action(priv, a, attr, &action); |
| |
| if (err) |
| return err; |
| |
| attr->split_count = attr->out_count; |
| continue; |
| } |
| |
| if (is_tcf_tunnel_release(a)) { |
| action |= MLX5_FLOW_CONTEXT_ACTION_DECAP; |
| continue; |
| } |
| |
| if (is_tcf_gact_goto_chain(a)) { |
| u32 dest_chain = tcf_gact_goto_chain_index(a); |
| 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; |
| |
| continue; |
| } |
| |
| return -EINVAL; |
| } |
| |
| attr->action = action; |
| if (!actions_match_supported(priv, exts, 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, u16 *flow_flags) |
| { |
| u16 __flow_flags = 0; |
| |
| if (flags & MLX5E_TC_INGRESS) |
| __flow_flags |= MLX5E_TC_FLOW_INGRESS; |
| if (flags & MLX5E_TC_EGRESS) |
| __flow_flags |= MLX5E_TC_FLOW_EGRESS; |
| |
| if (flags & MLX5E_TC_ESW_OFFLOAD) |
| __flow_flags |= MLX5E_TC_FLOW_ESWITCH; |
| if (flags & MLX5E_TC_NIC_OFFLOAD) |
| __flow_flags |= MLX5E_TC_FLOW_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, int flags) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5e_rep_priv *uplink_rpriv; |
| |
| if (flags & MLX5E_TC_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 != FDB_UPLINK_VPORT && |
| flow->flags & MLX5E_TC_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); |
| |
| return esw_paired && mlx5_lag_is_sriov(attr->in_mdev) && |
| (is_rep_ingress || act_is_encap); |
| } |
| |
| static int |
| mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size, |
| struct tc_cls_flower_offload *f, u16 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 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; |
| |
| *__flow = flow; |
| *__parse_attr = parse_attr; |
| |
| return 0; |
| |
| err_free: |
| kfree(flow); |
| kvfree(parse_attr); |
| return err; |
| } |
| |
| static int |
| __mlx5e_add_fdb_flow(struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f, |
| u16 flow_flags, |
| struct net_device *filter_dev, |
| struct mlx5_eswitch_rep *in_rep, |
| struct mlx5_core_dev *in_mdev, |
| struct mlx5e_tc_flow **__flow) |
| { |
| struct netlink_ext_ack *extack = f->common.extack; |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5e_tc_flow_parse_attr *parse_attr; |
| struct mlx5e_tc_flow *flow; |
| int attr_size, err; |
| |
| flow_flags |= MLX5E_TC_FLOW_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; |
| flow->esw_attr->parse_attr = parse_attr; |
| err = parse_cls_flower(flow->priv, flow, &parse_attr->spec, |
| f, filter_dev); |
| if (err) |
| goto err_free; |
| |
| flow->esw_attr->chain = f->common.chain_index; |
| flow->esw_attr->prio = TC_H_MAJ(f->common.prio) >> 16; |
| err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow, extack); |
| if (err) |
| goto err_free; |
| |
| flow->esw_attr->in_rep = in_rep; |
| flow->esw_attr->in_mdev = in_mdev; |
| |
| if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) == |
| MLX5_COUNTER_SOURCE_ESWITCH) |
| flow->esw_attr->counter_dev = in_mdev; |
| else |
| flow->esw_attr->counter_dev = priv->mdev; |
| |
| err = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow, extack); |
| if (err) |
| goto err_free; |
| |
| *__flow = flow; |
| |
| return 0; |
| |
| err_free: |
| kfree(flow); |
| kvfree(parse_attr); |
| out: |
| return err; |
| } |
| |
| static int mlx5e_tc_add_fdb_peer_flow(struct tc_cls_flower_offload *f, |
| struct mlx5e_tc_flow *flow) |
| { |
| 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 == FDB_UPLINK_VPORT) |
| in_mdev = peer_priv->mdev; |
| else |
| in_mdev = priv->mdev; |
| |
| parse_attr = flow->esw_attr->parse_attr; |
| err = __mlx5e_add_fdb_flow(peer_priv, f, flow->flags, |
| parse_attr->filter_dev, |
| flow->esw_attr->in_rep, in_mdev, &peer_flow); |
| if (err) |
| goto out; |
| |
| flow->peer_flow = peer_flow; |
| flow->flags |= MLX5E_TC_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 tc_cls_flower_offload *f, |
| u16 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; |
| |
| err = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep, |
| in_mdev, &flow); |
| if (err) |
| goto out; |
| |
| if (is_peer_flow_needed(flow)) { |
| err = mlx5e_tc_add_fdb_peer_flow(f, flow); |
| 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 tc_cls_flower_offload *f, |
| u16 flow_flags, |
| struct net_device *filter_dev, |
| struct mlx5e_tc_flow **__flow) |
| { |
| 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 |= MLX5E_TC_FLOW_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, f->exts, 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->flags |= MLX5E_TC_FLOW_OFFLOADED; |
| kvfree(parse_attr); |
| *__flow = flow; |
| |
| return 0; |
| |
| err_free: |
| kfree(flow); |
| kvfree(parse_attr); |
| out: |
| return err; |
| } |
| |
| static int |
| mlx5e_tc_add_flow(struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f, |
| int flags, |
| struct net_device *filter_dev, |
| struct mlx5e_tc_flow **flow) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| u16 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 == SRIOV_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 tc_cls_flower_offload *f, int 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; |
| |
| flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params); |
| 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); |
| goto out; |
| } |
| |
| err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow); |
| if (err) |
| goto out; |
| |
| err = rhashtable_insert_fast(tc_ht, &flow->node, tc_ht_params); |
| if (err) |
| goto err_free; |
| |
| return 0; |
| |
| err_free: |
| mlx5e_tc_del_flow(priv, flow); |
| kfree(flow); |
| out: |
| return err; |
| } |
| |
| #define DIRECTION_MASK (MLX5E_TC_INGRESS | MLX5E_TC_EGRESS) |
| #define FLOW_DIRECTION_MASK (MLX5E_TC_FLOW_INGRESS | MLX5E_TC_FLOW_EGRESS) |
| |
| static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags) |
| { |
| if ((flow->flags & FLOW_DIRECTION_MASK) == (flags & DIRECTION_MASK)) |
| return true; |
| |
| return false; |
| } |
| |
| int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f, int flags) |
| { |
| struct rhashtable *tc_ht = get_tc_ht(priv, flags); |
| struct mlx5e_tc_flow *flow; |
| |
| flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params); |
| if (!flow || !same_flow_direction(flow, flags)) |
| return -EINVAL; |
| |
| rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params); |
| |
| mlx5e_tc_del_flow(priv, flow); |
| |
| kfree(flow); |
| |
| return 0; |
| } |
| |
| int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv, |
| struct tc_cls_flower_offload *f, int 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 bytes; |
| u64 packets; |
| u64 lastuse; |
| |
| flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params); |
| if (!flow || !same_flow_direction(flow, flags)) |
| return -EINVAL; |
| |
| if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED)) |
| return 0; |
| |
| counter = mlx5e_tc_get_counter(flow); |
| if (!counter) |
| return 0; |
| |
| mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); |
| |
| peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); |
| if (!peer_esw) |
| goto out; |
| |
| if ((flow->flags & MLX5E_TC_FLOW_DUP) && |
| (flow->peer_flow->flags & MLX5E_TC_FLOW_OFFLOADED)) { |
| u64 bytes2; |
| u64 packets2; |
| u64 lastuse2; |
| |
| counter = mlx5e_tc_get_counter(flow->peer_flow); |
| mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2); |
| |
| bytes += bytes2; |
| packets += packets2; |
| lastuse = max_t(u64, lastuse, lastuse2); |
| } |
| |
| mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); |
| |
| out: |
| tcf_exts_stats_update(f->exts, bytes, packets, lastuse); |
| |
| return 0; |
| } |
| |
| 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; |
| u16 peer_vhca_id; |
| int bkt; |
| |
| if (!same_hw_devs(priv, peer_priv)) |
| return; |
| |
| peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id); |
| |
| hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist) { |
| if (hpe->peer_vhca_id == peer_vhca_id) |
| hpe->hp->pair->peer_gone = true; |
| } |
| } |
| |
| 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; |
| |
| hash_init(tc->mod_hdr_tbl); |
| 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); |
| |
| rhashtable_destroy(&tc->ht); |
| |
| if (!IS_ERR_OR_NULL(tc->t)) { |
| mlx5_destroy_flow_table(tc->t); |
| tc->t = NULL; |
| } |
| } |
| |
| 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, int 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); |
| } |