| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Vlad Buslov | 7217 | 28.61% | 45 | 12.13% |
| Roi Dayan | 4738 | 18.78% | 63 | 16.98% |
| Paul Blakey | 3935 | 15.60% | 23 | 6.20% |
| Ariel Levkovich | 2205 | 8.74% | 14 | 3.77% |
| Or Gerlitz | 1611 | 6.39% | 57 | 15.36% |
| Eli Cohen | 763 | 3.02% | 12 | 3.23% |
| Amir Vadai | 560 | 2.22% | 3 | 0.81% |
| Jianbo Liu | 484 | 1.92% | 11 | 2.96% |
| Maor Dickman | 456 | 1.81% | 4 | 1.08% |
| Eli Britstein | 389 | 1.54% | 21 | 5.66% |
| Lama Kayal | 389 | 1.54% | 4 | 1.08% |
| Chris Mi | 345 | 1.37% | 12 | 3.23% |
| Alaa Hleihel | 238 | 0.94% | 2 | 0.54% |
| Maxim Mikityanskiy | 208 | 0.82% | 8 | 2.16% |
| Dima Chumak | 200 | 0.79% | 4 | 1.08% |
| Tonghao Zhang | 179 | 0.71% | 4 | 1.08% |
| Hadar Hen Zion | 175 | 0.69% | 6 | 1.62% |
| Oz Shlomo | 154 | 0.61% | 6 | 1.62% |
| Dmytro Linkin | 140 | 0.55% | 7 | 1.89% |
| Pablo Neira Ayuso | 119 | 0.47% | 5 | 1.35% |
| David S. Miller | 88 | 0.35% | 6 | 1.62% |
| Maor Gottlieb | 86 | 0.34% | 6 | 1.62% |
| Vu Pham | 76 | 0.30% | 2 | 0.54% |
| Aviv Heller | 63 | 0.25% | 2 | 0.54% |
| Abhiram R N | 51 | 0.20% | 1 | 0.27% |
| Jason Gunthorpe | 44 | 0.17% | 1 | 0.27% |
| Mark Bloch | 43 | 0.17% | 3 | 0.81% |
| Yevgeny Kliteynik | 40 | 0.16% | 2 | 0.54% |
| wenxu | 39 | 0.15% | 2 | 0.54% |
| Parav Pandit | 36 | 0.14% | 3 | 0.81% |
| Jiri Pirko | 31 | 0.12% | 3 | 0.81% |
| Rabie Loulou | 24 | 0.10% | 4 | 1.08% |
| Gustavo A. R. Silva | 17 | 0.07% | 1 | 0.27% |
| Leon Romanovsky | 16 | 0.06% | 2 | 0.54% |
| Wei Yongjun | 12 | 0.05% | 1 | 0.27% |
| caihuoqing | 12 | 0.05% | 2 | 0.54% |
| Jakub Kiciński | 11 | 0.04% | 3 | 0.81% |
| Baowen Zheng | 6 | 0.02% | 1 | 0.27% |
| Saeed Mahameed | 6 | 0.02% | 4 | 1.08% |
| Po Liu | 4 | 0.02% | 1 | 0.27% |
| David Ahern | 3 | 0.01% | 1 | 0.27% |
| Christophe Jaillet | 3 | 0.01% | 1 | 0.27% |
| Bodong Wang | 3 | 0.01% | 2 | 0.54% |
| Aya Levin | 2 | 0.01% | 1 | 0.27% |
| Américo Wang | 2 | 0.01% | 1 | 0.27% |
| Huy Nguyen | 2 | 0.01% | 1 | 0.27% |
| Arnd Bergmann | 2 | 0.01% | 1 | 0.27% |
| Taehee Yoo | 1 | 0.00% | 1 | 0.27% |
| Dan Carpenter | 1 | 0.00% | 1 | 0.27% |
| Total | 25229 | 371 |
/* * 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/flow_offload.h> #include <net/sch_generic.h> #include <net/pkt_cls.h> #include <linux/mlx5/fs.h> #include <linux/mlx5/device.h> #include <linux/rhashtable.h> #include <linux/refcount.h> #include <linux/completion.h> #include <net/arp.h> #include <net/ipv6_stubs.h> #include <net/bareudp.h> #include <net/bonding.h> #include "en.h" #include "en/tc/post_act.h" #include "en_rep.h" #include "en/rep/tc.h" #include "en/rep/neigh.h" #include "en_tc.h" #include "eswitch.h" #include "fs_core.h" #include "en/port.h" #include "en/tc_tun.h" #include "en/mapping.h" #include "en/tc_ct.h" #include "en/mod_hdr.h" #include "en/tc_tun_encap.h" #include "en/tc/sample.h" #include "en/tc/act/act.h" #include "en/tc/post_meter.h" #include "lib/devcom.h" #include "lib/geneve.h" #include "lib/fs_chains.h" #include "diag/en_tc_tracepoint.h" #include <asm/div64.h> #include "lag/lag.h" #include "lag/mp.h" #define MLX5E_TC_TABLE_NUM_GROUPS 4 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(18) struct mlx5e_tc_table { /* Protects the dynamic assignment of the t parameter * which is the nic tc root table. */ struct mutex t_lock; struct mlx5e_priv *priv; struct mlx5_flow_table *t; struct mlx5_flow_table *miss_t; struct mlx5_fs_chains *chains; struct mlx5e_post_act *post_act; struct rhashtable ht; struct mod_hdr_tbl mod_hdr; struct mutex hairpin_tbl_lock; /* protects hairpin_tbl */ DECLARE_HASHTABLE(hairpin_tbl, 8); struct notifier_block netdevice_nb; struct netdev_net_notifier netdevice_nn; struct mlx5_tc_ct_priv *ct; struct mapping_ctx *mapping; }; struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = { [CHAIN_TO_REG] = { .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0, .moffset = 0, .mlen = 16, }, [VPORT_TO_REG] = { .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0, .moffset = 16, .mlen = 16, }, [TUNNEL_TO_REG] = { .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1, .moffset = 8, .mlen = ESW_TUN_OPTS_BITS + ESW_TUN_ID_BITS, .soffset = MLX5_BYTE_OFF(fte_match_param, misc_parameters_2.metadata_reg_c_1), }, [ZONE_TO_REG] = zone_to_reg_ct, [ZONE_RESTORE_TO_REG] = zone_restore_to_reg_ct, [CTSTATE_TO_REG] = ctstate_to_reg_ct, [MARK_TO_REG] = mark_to_reg_ct, [LABELS_TO_REG] = labels_to_reg_ct, [FTEID_TO_REG] = fteid_to_reg_ct, /* For NIC rules we store the restore metadata directly * into reg_b that is passed to SW since we don't * jump between steering domains. */ [NIC_CHAIN_TO_REG] = { .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B, .moffset = 0, .mlen = 16, }, [NIC_ZONE_RESTORE_TO_REG] = nic_zone_restore_to_reg_ct, [PACKET_COLOR_TO_REG] = packet_color_to_reg, }; struct mlx5e_tc_table *mlx5e_tc_table_alloc(void) { struct mlx5e_tc_table *tc; tc = kvzalloc(sizeof(*tc), GFP_KERNEL); return tc ? tc : ERR_PTR(-ENOMEM); } void mlx5e_tc_table_free(struct mlx5e_tc_table *tc) { kvfree(tc); } struct mlx5_fs_chains *mlx5e_nic_chains(struct mlx5e_tc_table *tc) { return tc->chains; } /* To avoid false lock dependency warning set the tc_ht lock * class different than the lock class of the ht being used when deleting * last flow from a group and then deleting a group, we get into del_sw_flow_group() * which call rhashtable_destroy on fg->ftes_hash which will take ht->mutex but * it's different than the ht->mutex here. */ static struct lock_class_key tc_ht_lock_key; static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow); static void free_flow_post_acts(struct mlx5e_tc_flow *flow); void mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec, enum mlx5e_tc_attr_to_reg type, u32 val, u32 mask) { void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval; int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset; int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset; int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen; u32 max_mask = GENMASK(match_len - 1, 0); __be32 curr_mask_be, curr_val_be; u32 curr_mask, curr_val; fmask = headers_c + soffset; fval = headers_v + soffset; memcpy(&curr_mask_be, fmask, 4); memcpy(&curr_val_be, fval, 4); curr_mask = be32_to_cpu(curr_mask_be); curr_val = be32_to_cpu(curr_val_be); //move to correct offset WARN_ON(mask > max_mask); mask <<= moffset; val <<= moffset; max_mask <<= moffset; //zero val and mask curr_mask &= ~max_mask; curr_val &= ~max_mask; //add current to mask curr_mask |= mask; curr_val |= val; //back to be32 and write curr_mask_be = cpu_to_be32(curr_mask); curr_val_be = cpu_to_be32(curr_val); memcpy(fmask, &curr_mask_be, 4); memcpy(fval, &curr_val_be, 4); spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2; } void mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec, enum mlx5e_tc_attr_to_reg type, u32 *val, u32 *mask) { void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval; int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset; int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset; int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen; u32 max_mask = GENMASK(match_len - 1, 0); __be32 curr_mask_be, curr_val_be; u32 curr_mask, curr_val; fmask = headers_c + soffset; fval = headers_v + soffset; memcpy(&curr_mask_be, fmask, 4); memcpy(&curr_val_be, fval, 4); curr_mask = be32_to_cpu(curr_mask_be); curr_val = be32_to_cpu(curr_val_be); *mask = (curr_mask >> moffset) & max_mask; *val = (curr_val >> moffset) & max_mask; } int mlx5e_tc_match_to_reg_set_and_get_id(struct mlx5_core_dev *mdev, struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts, enum mlx5_flow_namespace_type ns, enum mlx5e_tc_attr_to_reg type, u32 data) { int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset; int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield; int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen; char *modact; int err; modact = mlx5e_mod_hdr_alloc(mdev, ns, mod_hdr_acts); if (IS_ERR(modact)) return PTR_ERR(modact); /* Firmware has 5bit length field and 0 means 32bits */ if (mlen == 32) mlen = 0; MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET); MLX5_SET(set_action_in, modact, field, mfield); MLX5_SET(set_action_in, modact, offset, moffset); MLX5_SET(set_action_in, modact, length, mlen); MLX5_SET(set_action_in, modact, data, data); err = mod_hdr_acts->num_actions; mod_hdr_acts->num_actions++; return err; } struct mlx5e_tc_int_port_priv * mlx5e_get_int_port_priv(struct mlx5e_priv *priv) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; if (is_mdev_switchdev_mode(priv->mdev)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; return uplink_priv->int_port_priv; } return NULL; } struct mlx5e_flow_meters * mlx5e_get_flow_meters(struct mlx5_core_dev *dev) { struct mlx5_eswitch *esw = dev->priv.eswitch; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; struct mlx5e_priv *priv; if (is_mdev_switchdev_mode(dev)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; priv = netdev_priv(uplink_rpriv->netdev); if (!uplink_priv->flow_meters) uplink_priv->flow_meters = mlx5e_flow_meters_init(priv, MLX5_FLOW_NAMESPACE_FDB, uplink_priv->post_act); if (!IS_ERR(uplink_priv->flow_meters)) return uplink_priv->flow_meters; } return NULL; } static struct mlx5_tc_ct_priv * get_ct_priv(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; if (is_mdev_switchdev_mode(priv->mdev)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; return uplink_priv->ct_priv; } return tc->ct; } static struct mlx5e_tc_psample * get_sample_priv(struct mlx5e_priv *priv) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; if (is_mdev_switchdev_mode(priv->mdev)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; return uplink_priv->tc_psample; } return NULL; } static struct mlx5e_post_act * get_post_action(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; if (is_mdev_switchdev_mode(priv->mdev)) { uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; return uplink_priv->post_act; } return tc->post_act; } struct mlx5_flow_handle * mlx5_tc_rule_insert(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct mlx5_flow_attr *attr) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; if (is_mdev_switchdev_mode(priv->mdev)) return mlx5_eswitch_add_offloaded_rule(esw, spec, attr); return mlx5e_add_offloaded_nic_rule(priv, spec, attr); } void mlx5_tc_rule_delete(struct mlx5e_priv *priv, struct mlx5_flow_handle *rule, struct mlx5_flow_attr *attr) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; if (is_mdev_switchdev_mode(priv->mdev)) { mlx5_eswitch_del_offloaded_rule(esw, rule, attr); return; } mlx5e_del_offloaded_nic_rule(priv, rule, attr); } static bool is_flow_meter_action(struct mlx5_flow_attr *attr) { return ((attr->action & MLX5_FLOW_CONTEXT_ACTION_EXECUTE_ASO) && (attr->exe_aso_type == MLX5_EXE_ASO_FLOW_METER)); } static int mlx5e_tc_add_flow_meter(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr) { struct mlx5e_post_act *post_act = get_post_action(priv); struct mlx5e_post_meter_priv *post_meter; enum mlx5_flow_namespace_type ns_type; struct mlx5e_flow_meter_handle *meter; meter = mlx5e_tc_meter_replace(priv->mdev, &attr->meter_attr.params); if (IS_ERR(meter)) { mlx5_core_err(priv->mdev, "Failed to get flow meter\n"); return PTR_ERR(meter); } ns_type = mlx5e_tc_meter_get_namespace(meter->flow_meters); post_meter = mlx5e_post_meter_init(priv, ns_type, post_act, meter->green_counter, meter->red_counter); if (IS_ERR(post_meter)) { mlx5_core_err(priv->mdev, "Failed to init post meter\n"); goto err_meter_init; } attr->meter_attr.meter = meter; attr->meter_attr.post_meter = post_meter; attr->dest_ft = mlx5e_post_meter_get_ft(post_meter); attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; return 0; err_meter_init: mlx5e_tc_meter_put(meter); return PTR_ERR(post_meter); } static void mlx5e_tc_del_flow_meter(struct mlx5_flow_attr *attr) { mlx5e_post_meter_cleanup(attr->meter_attr.post_meter); mlx5e_tc_meter_put(attr->meter_attr.meter); } struct mlx5_flow_handle * mlx5e_tc_rule_offload(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct mlx5_flow_attr *attr) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; int err; if (attr->flags & MLX5_ATTR_FLAG_CT) { struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts = &attr->parse_attr->mod_hdr_acts; return mlx5_tc_ct_flow_offload(get_ct_priv(priv), spec, attr, mod_hdr_acts); } if (!is_mdev_switchdev_mode(priv->mdev)) return mlx5e_add_offloaded_nic_rule(priv, spec, attr); if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) return mlx5e_tc_sample_offload(get_sample_priv(priv), spec, attr); if (is_flow_meter_action(attr)) { err = mlx5e_tc_add_flow_meter(priv, attr); if (err) return ERR_PTR(err); } return mlx5_eswitch_add_offloaded_rule(esw, spec, attr); } void mlx5e_tc_rule_unoffload(struct mlx5e_priv *priv, struct mlx5_flow_handle *rule, struct mlx5_flow_attr *attr) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; if (attr->flags & MLX5_ATTR_FLAG_CT) { mlx5_tc_ct_delete_flow(get_ct_priv(priv), attr); return; } if (!is_mdev_switchdev_mode(priv->mdev)) { mlx5e_del_offloaded_nic_rule(priv, rule, attr); return; } if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) { mlx5e_tc_sample_unoffload(get_sample_priv(priv), rule, attr); return; } mlx5_eswitch_del_offloaded_rule(esw, rule, attr); if (attr->meter_attr.meter) mlx5e_tc_del_flow_meter(attr); } int mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev, struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts, enum mlx5_flow_namespace_type ns, enum mlx5e_tc_attr_to_reg type, u32 data) { int ret = mlx5e_tc_match_to_reg_set_and_get_id(mdev, mod_hdr_acts, ns, type, data); return ret < 0 ? ret : 0; } void mlx5e_tc_match_to_reg_mod_hdr_change(struct mlx5_core_dev *mdev, struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts, enum mlx5e_tc_attr_to_reg type, int act_id, u32 data) { int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset; int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield; int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen; char *modact; modact = mlx5e_mod_hdr_get_item(mod_hdr_acts, act_id); /* Firmware has 5bit length field and 0 means 32bits */ if (mlen == 32) mlen = 0; MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET); MLX5_SET(set_action_in, modact, field, mfield); MLX5_SET(set_action_in, modact, offset, moffset); MLX5_SET(set_action_in, modact, length, mlen); MLX5_SET(set_action_in, modact, data, data); } struct mlx5e_hairpin { struct mlx5_hairpin *pair; struct mlx5_core_dev *func_mdev; struct mlx5e_priv *func_priv; u32 tdn; struct mlx5e_tir direct_tir; int num_channels; struct mlx5e_rqt indir_rqt; struct mlx5e_tir indir_tir[MLX5E_NUM_INDIR_TIRS]; struct mlx5_ttc_table *ttc; }; struct mlx5e_hairpin_entry { /* a node of a hash table which keeps all the hairpin entries */ struct hlist_node hairpin_hlist; /* protects flows list */ spinlock_t flows_lock; /* flows sharing the same hairpin */ struct list_head flows; /* hpe's that were not fully initialized when dead peer update event * function traversed them. */ struct list_head dead_peer_wait_list; u16 peer_vhca_id; u8 prio; struct mlx5e_hairpin *hp; refcount_t refcnt; struct completion res_ready; }; static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow); struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow) { if (!flow || !refcount_inc_not_zero(&flow->refcnt)) return ERR_PTR(-EINVAL); return flow; } void mlx5e_flow_put(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { if (refcount_dec_and_test(&flow->refcnt)) { mlx5e_tc_del_flow(priv, flow); kfree_rcu(flow, rcu_head); } } bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow) { return flow_flag_test(flow, ESWITCH); } bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow) { return flow_flag_test(flow, FT); } bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow) { return flow_flag_test(flow, OFFLOADED); } int mlx5e_get_flow_namespace(struct mlx5e_tc_flow *flow) { return mlx5e_is_eswitch_flow(flow) ? MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL; } static struct mod_hdr_tbl * get_mod_hdr_table(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; return mlx5e_get_flow_namespace(flow) == MLX5_FLOW_NAMESPACE_FDB ? &esw->offloads.mod_hdr : &tc->mod_hdr; } 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_modify_hdr *modify_hdr; struct mlx5e_mod_hdr_handle *mh; mh = mlx5e_mod_hdr_attach(priv->mdev, get_mod_hdr_table(priv, flow), mlx5e_get_flow_namespace(flow), &parse_attr->mod_hdr_acts); if (IS_ERR(mh)) return PTR_ERR(mh); modify_hdr = mlx5e_mod_hdr_get(mh); flow->attr->modify_hdr = modify_hdr; flow->mh = mh; return 0; } static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { /* flow wasn't fully initialized */ if (!flow->mh) return; mlx5e_mod_hdr_detach(priv->mdev, get_mod_hdr_table(priv, flow), flow->mh); flow->mh = NULL; } static struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex) { struct mlx5_core_dev *mdev; struct net_device *netdev; struct mlx5e_priv *priv; netdev = dev_get_by_index(net, ifindex); if (!netdev) return ERR_PTR(-ENODEV); priv = netdev_priv(netdev); mdev = priv->mdev; dev_put(netdev); /* Mirred tc action holds a refcount on the ifindex net_device (see * net/sched/act_mirred.c:tcf_mirred_get_dev). So, it's okay to continue using mdev * after dev_put(netdev), while we're in the context of adding a tc flow. * * The mdev pointer corresponds to the peer/out net_device of a hairpin. It is then * stored in a hairpin object, which exists until all flows, that refer to it, get * removed. * * On the other hand, after a hairpin object has been created, the peer net_device may * be removed/unbound while there are still some hairpin flows that are using it. This * case is handled by mlx5e_tc_hairpin_update_dead_peer, which is hooked to * NETDEV_UNREGISTER event of the peer net_device. */ return mdev; } static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp) { struct mlx5e_tir_builder *builder; int err; builder = mlx5e_tir_builder_alloc(false); if (!builder) return -ENOMEM; err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn); if (err) goto out; mlx5e_tir_builder_build_inline(builder, hp->tdn, hp->pair->rqn[0]); err = mlx5e_tir_init(&hp->direct_tir, builder, hp->func_mdev, false); if (err) goto create_tir_err; out: mlx5e_tir_builder_free(builder); return err; create_tir_err: mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); goto out; } static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp) { mlx5e_tir_destroy(&hp->direct_tir); mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn); } static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp) { struct mlx5e_priv *priv = hp->func_priv; struct mlx5_core_dev *mdev = priv->mdev; struct mlx5e_rss_params_indir *indir; int err; indir = kvmalloc(sizeof(*indir), GFP_KERNEL); if (!indir) return -ENOMEM; mlx5e_rss_params_indir_init_uniform(indir, hp->num_channels); err = mlx5e_rqt_init_indir(&hp->indir_rqt, mdev, hp->pair->rqn, hp->num_channels, mlx5e_rx_res_get_current_hash(priv->rx_res).hfunc, indir); kvfree(indir); return err; } static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp) { struct mlx5e_priv *priv = hp->func_priv; struct mlx5e_rss_params_hash rss_hash; enum mlx5_traffic_types tt, max_tt; struct mlx5e_tir_builder *builder; int err = 0; builder = mlx5e_tir_builder_alloc(false); if (!builder) return -ENOMEM; rss_hash = mlx5e_rx_res_get_current_hash(priv->rx_res); for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) { struct mlx5e_rss_params_traffic_type rss_tt; rss_tt = mlx5e_rss_get_default_tt_config(tt); mlx5e_tir_builder_build_rqt(builder, hp->tdn, mlx5e_rqt_get_rqtn(&hp->indir_rqt), false); mlx5e_tir_builder_build_rss(builder, &rss_hash, &rss_tt, false); err = mlx5e_tir_init(&hp->indir_tir[tt], builder, hp->func_mdev, false); if (err) { mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err); goto err_destroy_tirs; } mlx5e_tir_builder_clear(builder); } out: mlx5e_tir_builder_free(builder); return err; err_destroy_tirs: max_tt = tt; for (tt = 0; tt < max_tt; tt++) mlx5e_tir_destroy(&hp->indir_tir[tt]); goto out; } static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp) { int tt; for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) mlx5e_tir_destroy(&hp->indir_tir[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->ns = mlx5_get_flow_namespace(hp->func_mdev, MLX5_FLOW_NAMESPACE_KERNEL); for (tt = 0; tt < MLX5_NUM_TT; tt++) { ttc_params->dests[tt].type = MLX5_FLOW_DESTINATION_TYPE_TIR; ttc_params->dests[tt].tir_num = tt == MLX5_TT_ANY ? mlx5e_tir_get_tirn(&hp->direct_tir) : mlx5e_tir_get_tirn(&hp->indir_tir[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; struct mlx5_ttc_table *ttc; 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); hp->ttc = mlx5_create_ttc_table(priv->mdev, &ttc_params); if (IS_ERR(hp->ttc)) { err = PTR_ERR(hp->ttc); goto err_create_ttc_table; } ttc = mlx5e_fs_get_ttc(priv->fs, false); netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n", hp->num_channels, mlx5_get_ttc_flow_table(ttc)->id); return 0; err_create_ttc_table: mlx5e_hairpin_destroy_indirect_tirs(hp); err_create_indirect_tirs: mlx5e_rqt_destroy(&hp->indir_rqt); return err; } static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp) { mlx5_destroy_ttc_table(hp->ttc); mlx5e_hairpin_destroy_indirect_tirs(hp); mlx5e_rqt_destroy(&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); if (IS_ERR(peer_mdev)) { err = PTR_ERR(peer_mdev); goto create_pair_err; } 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_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5e_hairpin_entry *hpe; u32 hash_key = hash_hairpin_info(peer_vhca_id, prio); hash_for_each_possible(tc->hairpin_tbl, hpe, hairpin_hlist, hash_key) { if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) { refcount_inc(&hpe->refcnt); return hpe; } } return NULL; } static void mlx5e_hairpin_put(struct mlx5e_priv *priv, struct mlx5e_hairpin_entry *hpe) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); /* no more hairpin flows for us, release the hairpin pair */ if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &tc->hairpin_tbl_lock)) return; hash_del(&hpe->hairpin_hlist); mutex_unlock(&tc->hairpin_tbl_lock); if (!IS_ERR_OR_NULL(hpe->hp)) { netdev_dbg(priv->netdev, "del hairpin: peer %s\n", dev_name(hpe->hp->pair->peer_mdev->device)); mlx5e_hairpin_destroy(hpe->hp); } WARN_ON(!list_empty(&hpe->flows)); kfree(hpe); } #define UNKNOWN_MATCH_PRIO 8 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, u8 *match_prio, struct netlink_ext_ack *extack) { void *headers_c, *headers_v; u8 prio_val, prio_mask = 0; bool vlan_present; #ifdef CONFIG_MLX5_CORE_EN_DCB if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) { NL_SET_ERR_MSG_MOD(extack, "only PCP trust state supported for hairpin"); return -EOPNOTSUPP; } #endif headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag); if (vlan_present) { prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio); prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio); } if (!vlan_present || !prio_mask) { prio_val = UNKNOWN_MATCH_PRIO; } else if (prio_mask != 0x7) { NL_SET_ERR_MSG_MOD(extack, "masked priority match not supported for hairpin"); return -EOPNOTSUPP; } *match_prio = prio_val; return 0; } static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5e_tc_flow_parse_attr *parse_attr, struct netlink_ext_ack *extack) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); 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 (IS_ERR(peer_mdev)) { NL_SET_ERR_MSG_MOD(extack, "invalid ifindex of mirred device"); return PTR_ERR(peer_mdev); } if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) { NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported"); return -EOPNOTSUPP; } peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id); err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio, extack); if (err) return err; mutex_lock(&tc->hairpin_tbl_lock); hpe = mlx5e_hairpin_get(priv, peer_id, match_prio); if (hpe) { mutex_unlock(&tc->hairpin_tbl_lock); wait_for_completion(&hpe->res_ready); if (IS_ERR(hpe->hp)) { err = -EREMOTEIO; goto out_err; } goto attach_flow; } hpe = kzalloc(sizeof(*hpe), GFP_KERNEL); if (!hpe) { mutex_unlock(&tc->hairpin_tbl_lock); return -ENOMEM; } spin_lock_init(&hpe->flows_lock); INIT_LIST_HEAD(&hpe->flows); INIT_LIST_HEAD(&hpe->dead_peer_wait_list); hpe->peer_vhca_id = peer_id; hpe->prio = match_prio; refcount_set(&hpe->refcnt, 1); init_completion(&hpe->res_ready); hash_add(tc->hairpin_tbl, &hpe->hairpin_hlist, hash_hairpin_info(peer_id, match_prio)); mutex_unlock(&tc->hairpin_tbl_lock); params.log_data_size = 16; params.log_data_size = min_t(u8, params.log_data_size, MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz)); params.log_data_size = max_t(u8, params.log_data_size, MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz)); params.log_num_packets = params.log_data_size - MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev); params.log_num_packets = min_t(u8, params.log_num_packets, MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets)); params.q_counter = priv->q_counter; /* set hairpin pair per each 50Gbs share of the link */ mlx5e_port_max_linkspeed(priv->mdev, &link_speed); link_speed = max_t(u32, link_speed, 50000); link_speed64 = link_speed; do_div(link_speed64, 50000); params.num_channels = link_speed64; hp = mlx5e_hairpin_create(priv, ¶ms, peer_ifindex); hpe->hp = hp; complete_all(&hpe->res_ready); if (IS_ERR(hp)) { err = PTR_ERR(hp); goto out_err; } netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n", mlx5e_tir_get_tirn(&hp->direct_tir), hp->pair->rqn[0], dev_name(hp->pair->peer_mdev->device), hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets); attach_flow: if (hpe->hp->num_channels > 1) { flow_flag_set(flow, HAIRPIN_RSS); flow->attr->nic_attr->hairpin_ft = mlx5_get_ttc_flow_table(hpe->hp->ttc); } else { flow->attr->nic_attr->hairpin_tirn = mlx5e_tir_get_tirn(&hpe->hp->direct_tir); } flow->hpe = hpe; spin_lock(&hpe->flows_lock); list_add(&flow->hairpin, &hpe->flows); spin_unlock(&hpe->flows_lock); return 0; out_err: mlx5e_hairpin_put(priv, hpe); return err; } static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { /* flow wasn't fully initialized */ if (!flow->hpe) return; spin_lock(&flow->hpe->flows_lock); list_del(&flow->hairpin); spin_unlock(&flow->hpe->flows_lock); mlx5e_hairpin_put(priv, flow->hpe); flow->hpe = NULL; } struct mlx5_flow_handle * mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct mlx5_flow_attr *attr) { struct mlx5_flow_context *flow_context = &spec->flow_context; struct mlx5e_vlan_table *vlan = mlx5e_fs_get_vlan(priv->fs); struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_nic_flow_attr *nic_attr = attr->nic_attr; struct mlx5_flow_destination dest[2] = {}; struct mlx5_fs_chains *nic_chains; struct mlx5_flow_act flow_act = { .action = attr->action, .flags = FLOW_ACT_NO_APPEND, }; struct mlx5_flow_handle *rule; struct mlx5_flow_table *ft; int dest_ix = 0; nic_chains = mlx5e_nic_chains(tc); flow_context->flags |= FLOW_CONTEXT_HAS_TAG; flow_context->flow_tag = nic_attr->flow_tag; if (attr->dest_ft) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; dest[dest_ix].ft = attr->dest_ft; dest_ix++; } else if (nic_attr->hairpin_ft) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; dest[dest_ix].ft = nic_attr->hairpin_ft; dest_ix++; } else if (nic_attr->hairpin_tirn) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR; dest[dest_ix].tir_num = nic_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; if (attr->dest_chain) { dest[dest_ix].ft = mlx5_chains_get_table(nic_chains, attr->dest_chain, 1, MLX5E_TC_FT_LEVEL); if (IS_ERR(dest[dest_ix].ft)) return ERR_CAST(dest[dest_ix].ft); } else { dest[dest_ix].ft = mlx5e_vlan_get_flowtable(vlan); } dest_ix++; } if (dest[0].type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE && MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL; if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; dest[dest_ix].counter_id = mlx5_fc_id(attr->counter); dest_ix++; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) flow_act.modify_hdr = attr->modify_hdr; mutex_lock(&tc->t_lock); if (IS_ERR_OR_NULL(tc->t)) { /* Create the root table here if doesn't exist yet */ tc->t = mlx5_chains_get_table(nic_chains, 0, 1, MLX5E_TC_FT_LEVEL); if (IS_ERR(tc->t)) { mutex_unlock(&tc->t_lock); netdev_err(priv->netdev, "Failed to create tc offload table\n"); rule = ERR_CAST(tc->t); goto err_ft_get; } } mutex_unlock(&tc->t_lock); if (attr->chain || attr->prio) ft = mlx5_chains_get_table(nic_chains, attr->chain, attr->prio, MLX5E_TC_FT_LEVEL); else ft = attr->ft; if (IS_ERR(ft)) { rule = ERR_CAST(ft); goto err_ft_get; } if (attr->outer_match_level != MLX5_MATCH_NONE) spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS; rule = mlx5_add_flow_rules(ft, spec, &flow_act, dest, dest_ix); if (IS_ERR(rule)) goto err_rule; return rule; err_rule: if (attr->chain || attr->prio) mlx5_chains_put_table(nic_chains, attr->chain, attr->prio, MLX5E_TC_FT_LEVEL); err_ft_get: if (attr->dest_chain) mlx5_chains_put_table(nic_chains, attr->dest_chain, 1, MLX5E_TC_FT_LEVEL); return ERR_CAST(rule); } static int alloc_flow_attr_counter(struct mlx5_core_dev *counter_dev, struct mlx5_flow_attr *attr) { struct mlx5_fc *counter; counter = mlx5_fc_create(counter_dev, true); if (IS_ERR(counter)) return PTR_ERR(counter); attr->counter = counter; return 0; } static int mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_flow_attr *attr = flow->attr; struct mlx5_core_dev *dev = priv->mdev; int err; parse_attr = attr->parse_attr; if (flow_flag_test(flow, HAIRPIN)) { err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack); if (err) return err; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { err = alloc_flow_attr_counter(dev, attr); if (err) return err; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { err = mlx5e_attach_mod_hdr(priv, flow, parse_attr); mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts); if (err) return err; } if (attr->flags & MLX5_ATTR_FLAG_CT) flow->rule[0] = mlx5_tc_ct_flow_offload(get_ct_priv(priv), &parse_attr->spec, attr, &parse_attr->mod_hdr_acts); else flow->rule[0] = mlx5e_add_offloaded_nic_rule(priv, &parse_attr->spec, attr); return PTR_ERR_OR_ZERO(flow->rule[0]); } void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv, struct mlx5_flow_handle *rule, struct mlx5_flow_attr *attr) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_fs_chains *nic_chains; nic_chains = mlx5e_nic_chains(tc); mlx5_del_flow_rules(rule); if (attr->chain || attr->prio) mlx5_chains_put_table(nic_chains, attr->chain, attr->prio, MLX5E_TC_FT_LEVEL); if (attr->dest_chain) mlx5_chains_put_table(nic_chains, attr->dest_chain, 1, MLX5E_TC_FT_LEVEL); } static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_flow_attr *attr = flow->attr; flow_flag_clear(flow, OFFLOADED); if (attr->flags & MLX5_ATTR_FLAG_CT) mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr); else if (!IS_ERR_OR_NULL(flow->rule[0])) mlx5e_del_offloaded_nic_rule(priv, flow->rule[0], attr); /* Remove root table if no rules are left to avoid * extra steering hops. */ mutex_lock(&tc->t_lock); if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) && !IS_ERR_OR_NULL(tc->t)) { mlx5_chains_put_table(mlx5e_nic_chains(tc), 0, 1, MLX5E_TC_FT_LEVEL); tc->t = NULL; } mutex_unlock(&tc->t_lock); 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(priv->mdev, attr->counter); if (flow_flag_test(flow, HAIRPIN)) mlx5e_hairpin_flow_del(priv, flow); free_flow_post_acts(flow); kvfree(attr->parse_attr); kfree(flow->attr); } 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_flow_attr *attr) { struct mlx5_flow_handle *rule; if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH) return mlx5_eswitch_add_offloaded_rule(esw, spec, attr); rule = mlx5e_tc_rule_offload(flow->priv, spec, attr); if (IS_ERR(rule)) return rule; if (attr->esw_attr->split_count) { flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr); if (IS_ERR(flow->rule[1])) goto err_rule1; } return rule; err_rule1: mlx5e_tc_rule_unoffload(flow->priv, rule, attr); return flow->rule[1]; } void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr) { flow_flag_clear(flow, OFFLOADED); if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH) return mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr); if (attr->esw_attr->split_count) mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr); mlx5e_tc_rule_unoffload(flow->priv, flow->rule[0], attr); } 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 mlx5e_tc_mod_hdr_acts mod_acts = {}; struct mlx5e_mod_hdr_handle *mh = NULL; struct mlx5_flow_attr *slow_attr; struct mlx5_flow_handle *rule; bool fwd_and_modify_cap; u32 chain_mapping = 0; int err; slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB); if (!slow_attr) return ERR_PTR(-ENOMEM); memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ); slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; slow_attr->esw_attr->split_count = 0; slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH; fwd_and_modify_cap = MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_modify_header_fwd_to_table); if (!fwd_and_modify_cap) goto skip_restore; err = mlx5_chains_get_chain_mapping(esw_chains(esw), flow->attr->chain, &chain_mapping); if (err) goto err_get_chain; err = mlx5e_tc_match_to_reg_set(esw->dev, &mod_acts, MLX5_FLOW_NAMESPACE_FDB, CHAIN_TO_REG, chain_mapping); if (err) goto err_reg_set; mh = mlx5e_mod_hdr_attach(esw->dev, get_mod_hdr_table(flow->priv, flow), MLX5_FLOW_NAMESPACE_FDB, &mod_acts); if (IS_ERR(mh)) { err = PTR_ERR(mh); goto err_attach; } slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; slow_attr->modify_hdr = mlx5e_mod_hdr_get(mh); skip_restore: rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr); if (IS_ERR(rule)) { err = PTR_ERR(rule); goto err_offload; } flow->slow_mh = mh; flow->chain_mapping = chain_mapping; flow_flag_set(flow, SLOW); mlx5e_mod_hdr_dealloc(&mod_acts); kfree(slow_attr); return rule; err_offload: if (fwd_and_modify_cap) mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), mh); err_attach: err_reg_set: if (fwd_and_modify_cap) mlx5_chains_put_chain_mapping(esw_chains(esw), chain_mapping); err_get_chain: mlx5e_mod_hdr_dealloc(&mod_acts); kfree(slow_attr); return ERR_PTR(err); } void mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw, struct mlx5e_tc_flow *flow) { struct mlx5_flow_attr *slow_attr; slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB); if (!slow_attr) { mlx5_core_warn(flow->priv->mdev, "Unable to alloc attr to unoffload slow path rule\n"); return; } memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ); slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; slow_attr->esw_attr->split_count = 0; slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH; if (flow->slow_mh) { slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; slow_attr->modify_hdr = mlx5e_mod_hdr_get(flow->slow_mh); } mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr); if (flow->slow_mh) { mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), flow->slow_mh); mlx5_chains_put_chain_mapping(esw_chains(esw), flow->chain_mapping); flow->chain_mapping = 0; flow->slow_mh = NULL; } flow_flag_clear(flow, SLOW); kfree(slow_attr); } /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this * function. */ static void unready_flow_add(struct mlx5e_tc_flow *flow, struct list_head *unready_flows) { flow_flag_set(flow, NOT_READY); list_add_tail(&flow->unready, unready_flows); } /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this * function. */ static void unready_flow_del(struct mlx5e_tc_flow *flow) { list_del(&flow->unready); flow_flag_clear(flow, NOT_READY); } static void add_unready_flow(struct mlx5e_tc_flow *flow) { struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *rpriv; struct mlx5_eswitch *esw; esw = flow->priv->mdev->priv.eswitch; rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &rpriv->uplink_priv; mutex_lock(&uplink_priv->unready_flows_lock); unready_flow_add(flow, &uplink_priv->unready_flows); mutex_unlock(&uplink_priv->unready_flows_lock); } static void remove_unready_flow(struct mlx5e_tc_flow *flow) { struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *rpriv; struct mlx5_eswitch *esw; esw = flow->priv->mdev->priv.eswitch; rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &rpriv->uplink_priv; mutex_lock(&uplink_priv->unready_flows_lock); unready_flow_del(flow); mutex_unlock(&uplink_priv->unready_flows_lock); } bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_dev) { struct mlx5_core_dev *out_mdev, *route_mdev; struct mlx5e_priv *out_priv, *route_priv; out_priv = netdev_priv(out_dev); out_mdev = out_priv->mdev; route_priv = netdev_priv(route_dev); route_mdev = route_priv->mdev; if (out_mdev->coredev_type != MLX5_COREDEV_PF) return false; if (route_mdev->coredev_type != MLX5_COREDEV_VF && route_mdev->coredev_type != MLX5_COREDEV_SF) return false; return mlx5e_same_hw_devs(out_priv, route_priv); } int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev, u16 *vport) { struct mlx5e_priv *out_priv, *route_priv; struct mlx5_devcom *devcom = NULL; struct mlx5_core_dev *route_mdev; struct mlx5_eswitch *esw; u16 vhca_id; int err; out_priv = netdev_priv(out_dev); esw = out_priv->mdev->priv.eswitch; route_priv = netdev_priv(route_dev); route_mdev = route_priv->mdev; vhca_id = MLX5_CAP_GEN(route_mdev, vhca_id); if (mlx5_lag_is_active(out_priv->mdev)) { /* In lag case we may get devices from different eswitch instances. * If we failed to get vport num, it means, mostly, that we on the wrong * eswitch. */ err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); if (err != -ENOENT) return err; devcom = out_priv->mdev->priv.devcom; esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!esw) return -ENODEV; } err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); if (devcom) mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); return err; } int mlx5e_tc_add_flow_mod_hdr(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr) { struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts = &attr->parse_attr->mod_hdr_acts; struct mlx5_modify_hdr *mod_hdr; mod_hdr = mlx5_modify_header_alloc(priv->mdev, mlx5e_get_flow_namespace(flow), mod_hdr_acts->num_actions, mod_hdr_acts->actions); if (IS_ERR(mod_hdr)) return PTR_ERR(mod_hdr); WARN_ON(attr->modify_hdr); attr->modify_hdr = mod_hdr; return 0; } static int set_encap_dests(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr, struct netlink_ext_ack *extack, bool *vf_tun) { struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_esw_flow_attr *esw_attr; struct net_device *encap_dev = NULL; struct mlx5e_rep_priv *rpriv; struct mlx5e_priv *out_priv; int out_index; int err = 0; if (!mlx5e_is_eswitch_flow(flow)) return 0; parse_attr = attr->parse_attr; esw_attr = attr->esw_attr; *vf_tun = false; for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) { struct net_device *out_dev; int mirred_ifindex; if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)) continue; mirred_ifindex = parse_attr->mirred_ifindex[out_index]; out_dev = dev_get_by_index(dev_net(priv->netdev), mirred_ifindex); if (!out_dev) { NL_SET_ERR_MSG_MOD(extack, "Requested mirred device not found"); err = -ENODEV; goto out; } err = mlx5e_attach_encap(priv, flow, attr, out_dev, out_index, extack, &encap_dev); dev_put(out_dev); if (err) goto out; if (esw_attr->dests[out_index].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE && !esw_attr->dest_int_port) *vf_tun = true; out_priv = netdev_priv(encap_dev); rpriv = out_priv->ppriv; esw_attr->dests[out_index].rep = rpriv->rep; esw_attr->dests[out_index].mdev = out_priv->mdev; } if (*vf_tun && esw_attr->out_count > 1) { NL_SET_ERR_MSG_MOD(extack, "VF tunnel encap with mirroring is not supported"); err = -EOPNOTSUPP; goto out; } out: return err; } static void clean_encap_dests(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr, bool *vf_tun) { struct mlx5_esw_flow_attr *esw_attr; int out_index; if (!mlx5e_is_eswitch_flow(flow)) return; esw_attr = attr->esw_attr; *vf_tun = false; for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) { if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)) continue; if (esw_attr->dests[out_index].flags & MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE && !esw_attr->dest_int_port) *vf_tun = true; mlx5e_detach_encap(priv, flow, attr, out_index); kfree(attr->parse_attr->tun_info[out_index]); } } static int mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_flow_attr *attr = flow->attr; struct mlx5_esw_flow_attr *esw_attr; u32 max_prio, max_chain; bool vf_tun; int err = 0; parse_attr = attr->parse_attr; esw_attr = attr->esw_attr; /* We check chain range only for tc flows. * For ft flows, we checked attr->chain was originally 0 and set it to * FDB_FT_CHAIN which is outside tc range. * See mlx5e_rep_setup_ft_cb(). */ max_chain = mlx5_chains_get_chain_range(esw_chains(esw)); if (!mlx5e_is_ft_flow(flow) && attr->chain > max_chain) { NL_SET_ERR_MSG_MOD(extack, "Requested chain is out of supported range"); err = -EOPNOTSUPP; goto err_out; } max_prio = mlx5_chains_get_prio_range(esw_chains(esw)); if (attr->prio > max_prio) { NL_SET_ERR_MSG_MOD(extack, "Requested priority is out of supported range"); err = -EOPNOTSUPP; goto err_out; } if (flow_flag_test(flow, TUN_RX)) { err = mlx5e_attach_decap_route(priv, flow); if (err) goto err_out; if (!attr->chain && esw_attr->int_port && attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) { /* If decap route device is internal port, change the * source vport value in reg_c0 back to uplink just in * case the rule performs goto chain > 0. If we have a miss * on chain > 0 we want the metadata regs to hold the * chain id so SW will resume handling of this packet * from the proper chain. */ u32 metadata = mlx5_eswitch_get_vport_metadata_for_set(esw, esw_attr->in_rep->vport); err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG, metadata); if (err) goto err_out; attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; } } if (flow_flag_test(flow, L3_TO_L2_DECAP)) { err = mlx5e_attach_decap(priv, flow, extack); if (err) goto err_out; } if (netif_is_ovs_master(parse_attr->filter_dev)) { struct mlx5e_tc_int_port *int_port; if (attr->chain) { NL_SET_ERR_MSG_MOD(extack, "Internal port rule is only supported on chain 0"); err = -EOPNOTSUPP; goto err_out; } if (attr->dest_chain) { NL_SET_ERR_MSG_MOD(extack, "Internal port rule offload doesn't support goto action"); err = -EOPNOTSUPP; goto err_out; } int_port = mlx5e_tc_int_port_get(mlx5e_get_int_port_priv(priv), parse_attr->filter_dev->ifindex, flow_flag_test(flow, EGRESS) ? MLX5E_TC_INT_PORT_EGRESS : MLX5E_TC_INT_PORT_INGRESS); if (IS_ERR(int_port)) { err = PTR_ERR(int_port); goto err_out; } esw_attr->int_port = int_port; } err = set_encap_dests(priv, flow, attr, extack, &vf_tun); if (err) goto err_out; err = mlx5_eswitch_add_vlan_action(esw, attr); if (err) goto err_out; if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { if (vf_tun) { err = mlx5e_tc_add_flow_mod_hdr(priv, flow, attr); if (err) goto err_out; } else { err = mlx5e_attach_mod_hdr(priv, flow, parse_attr); if (err) goto err_out; } } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { err = alloc_flow_attr_counter(esw_attr->counter_dev, attr); if (err) goto err_out; } /* we get here if one of the following takes place: * (1) there's no error * (2) there's an encap action and we don't have valid neigh */ if (flow_flag_test(flow, SLOW)) flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec); 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_out; } flow_flag_set(flow, OFFLOADED); return 0; err_out: flow_flag_set(flow, FAILED); return err; } static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow) { struct mlx5_flow_spec *spec = &flow->attr->parse_attr->spec; void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_3); u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3, headers_v, geneve_tlv_option_0_data); return !!geneve_tlv_opt_0_data; } static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_flow_attr *attr = flow->attr; struct mlx5_esw_flow_attr *esw_attr; bool vf_tun; esw_attr = attr->esw_attr; mlx5e_put_flow_tunnel_id(flow); if (flow_flag_test(flow, NOT_READY)) remove_unready_flow(flow); if (mlx5e_is_offloaded_flow(flow)) { if (flow_flag_test(flow, SLOW)) mlx5e_tc_unoffload_from_slow_path(esw, flow); else mlx5e_tc_unoffload_fdb_rules(esw, flow, attr); } complete_all(&flow->del_hw_done); if (mlx5_flow_has_geneve_opt(flow)) mlx5_geneve_tlv_option_del(priv->mdev->geneve); mlx5_eswitch_del_vlan_action(esw, attr); if (flow->decap_route) mlx5e_detach_decap_route(priv, flow); clean_encap_dests(priv, flow, attr, &vf_tun); mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts); if (vf_tun && attr->modify_hdr) mlx5_modify_header_dealloc(priv->mdev, attr->modify_hdr); else mlx5e_detach_mod_hdr(priv, flow); } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) mlx5_fc_destroy(esw_attr->counter_dev, attr->counter); if (esw_attr->int_port) mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->int_port); if (esw_attr->dest_int_port) mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->dest_int_port); if (flow_flag_test(flow, L3_TO_L2_DECAP)) mlx5e_detach_decap(priv, flow); free_flow_post_acts(flow); if (flow->attr->lag.count) mlx5_lag_del_mpesw_rule(esw->dev); kvfree(attr->esw_attr->rx_tun_attr); kvfree(attr->parse_attr); kfree(flow->attr); } struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow) { struct mlx5_flow_attr *attr; attr = list_first_entry(&flow->attrs, struct mlx5_flow_attr, list); return attr->counter; } /* Iterate over tmp_list of flows attached to flow_list head. */ void mlx5e_put_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list) { struct mlx5e_tc_flow *flow, *tmp; list_for_each_entry_safe(flow, tmp, flow_list, tmp_list) mlx5e_flow_put(priv, flow); } static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow) { struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch; if (!flow_flag_test(flow, ESWITCH) || !flow_flag_test(flow, DUP)) return; mutex_lock(&esw->offloads.peer_mutex); list_del(&flow->peer); mutex_unlock(&esw->offloads.peer_mutex); flow_flag_clear(flow, DUP); if (refcount_dec_and_test(&flow->peer_flow->refcnt)) { mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow); kfree(flow->peer_flow); } flow->peer_flow = NULL; } static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow) { struct mlx5_core_dev *dev = flow->priv->mdev; struct mlx5_devcom *devcom = dev->priv.devcom; struct mlx5_eswitch *peer_esw; peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!peer_esw) return; __mlx5e_tc_del_fdb_peer_flow(flow); mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); } static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow) { if (mlx5e_is_eswitch_flow(flow)) { mlx5e_tc_del_fdb_peer_flow(flow); mlx5e_tc_del_fdb_flow(priv, flow); } else { mlx5e_tc_del_nic_flow(priv, flow); } } static bool flow_requires_tunnel_mapping(u32 chain, struct flow_cls_offload *f) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct flow_action *flow_action = &rule->action; const struct flow_action_entry *act; int i; if (chain) return false; flow_action_for_each(i, act, flow_action) { switch (act->id) { case FLOW_ACTION_GOTO: return true; case FLOW_ACTION_SAMPLE: return true; default: continue; } } return false; } static int enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv, struct flow_dissector_key_enc_opts *opts, struct netlink_ext_ack *extack, bool *dont_care) { struct geneve_opt *opt; int off = 0; *dont_care = true; while (opts->len > off) { opt = (struct geneve_opt *)&opts->data[off]; if (!(*dont_care) || opt->opt_class || opt->type || memchr_inv(opt->opt_data, 0, opt->length * 4)) { *dont_care = false; if (opt->opt_class != htons(U16_MAX) || opt->type != U8_MAX) { NL_SET_ERR_MSG_MOD(extack, "Partial match of tunnel options in chain > 0 isn't supported"); netdev_warn(priv->netdev, "Partial match of tunnel options in chain > 0 isn't supported"); return -EOPNOTSUPP; } } off += sizeof(struct geneve_opt) + opt->length * 4; } return 0; } #define COPY_DISSECTOR(rule, diss_key, dst)\ ({ \ struct flow_rule *__rule = (rule);\ typeof(dst) __dst = dst;\ \ memcpy(__dst,\ skb_flow_dissector_target(__rule->match.dissector,\ diss_key,\ __rule->match.key),\ sizeof(*__dst));\ }) static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct flow_cls_offload *f, struct net_device *filter_dev) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts; struct flow_match_enc_opts enc_opts_match; struct tunnel_match_enc_opts tun_enc_opts; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5_flow_attr *attr = flow->attr; struct mlx5e_rep_priv *uplink_rpriv; struct tunnel_match_key tunnel_key; bool enc_opts_is_dont_care = true; u32 tun_id, enc_opts_id = 0; struct mlx5_eswitch *esw; u32 value, mask; int err; esw = priv->mdev->priv.eswitch; uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; memset(&tunnel_key, 0, sizeof(tunnel_key)); COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL, &tunnel_key.enc_control); if (tunnel_key.enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, &tunnel_key.enc_ipv4); else COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, &tunnel_key.enc_ipv6); COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IP, &tunnel_key.enc_ip); COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_PORTS, &tunnel_key.enc_tp); COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_KEYID, &tunnel_key.enc_key_id); tunnel_key.filter_ifindex = filter_dev->ifindex; err = mapping_add(uplink_priv->tunnel_mapping, &tunnel_key, &tun_id); if (err) return err; flow_rule_match_enc_opts(rule, &enc_opts_match); err = enc_opts_is_dont_care_or_full_match(priv, enc_opts_match.mask, extack, &enc_opts_is_dont_care); if (err) goto err_enc_opts; if (!enc_opts_is_dont_care) { memset(&tun_enc_opts, 0, sizeof(tun_enc_opts)); memcpy(&tun_enc_opts.key, enc_opts_match.key, sizeof(*enc_opts_match.key)); memcpy(&tun_enc_opts.mask, enc_opts_match.mask, sizeof(*enc_opts_match.mask)); err = mapping_add(uplink_priv->tunnel_enc_opts_mapping, &tun_enc_opts, &enc_opts_id); if (err) goto err_enc_opts; } value = tun_id << ENC_OPTS_BITS | enc_opts_id; mask = enc_opts_id ? TUNNEL_ID_MASK : (TUNNEL_ID_MASK & ~ENC_OPTS_BITS_MASK); if (attr->chain) { mlx5e_tc_match_to_reg_match(&attr->parse_attr->spec, TUNNEL_TO_REG, value, mask); } else { mod_hdr_acts = &attr->parse_attr->mod_hdr_acts; err = mlx5e_tc_match_to_reg_set(priv->mdev, mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB, TUNNEL_TO_REG, value); if (err) goto err_set; attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; } flow->attr->tunnel_id = value; return 0; err_set: if (enc_opts_id) mapping_remove(uplink_priv->tunnel_enc_opts_mapping, enc_opts_id); err_enc_opts: mapping_remove(uplink_priv->tunnel_mapping, tun_id); return err; } static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow) { u32 enc_opts_id = flow->attr->tunnel_id & ENC_OPTS_BITS_MASK; u32 tun_id = flow->attr->tunnel_id >> ENC_OPTS_BITS; struct mlx5_rep_uplink_priv *uplink_priv; struct mlx5e_rep_priv *uplink_rpriv; struct mlx5_eswitch *esw; esw = flow->priv->mdev->priv.eswitch; uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); uplink_priv = &uplink_rpriv->uplink_priv; if (tun_id) mapping_remove(uplink_priv->tunnel_mapping, tun_id); if (enc_opts_id) mapping_remove(uplink_priv->tunnel_enc_opts_mapping, enc_opts_id); } void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev, struct flow_match_basic *match, bool outer, void *headers_c, void *headers_v) { bool ip_version_cap; ip_version_cap = outer ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.outer_ip_version) : MLX5_CAP_FLOWTABLE_NIC_RX(mdev, ft_field_support.inner_ip_version); if (ip_version_cap && match->mask->n_proto == htons(0xFFFF) && (match->key->n_proto == htons(ETH_P_IP) || match->key->n_proto == htons(ETH_P_IPV6))) { MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version, match->key->n_proto == htons(ETH_P_IP) ? 4 : 6); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, ntohs(match->mask->n_proto)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ntohs(match->key->n_proto)); } } u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer) { void *headers_v; u16 ethertype; u8 ip_version; if (outer) headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); else headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers); ip_version = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_version); /* Return ip_version converted from ethertype anyway */ if (!ip_version) { ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype); if (ethertype == ETH_P_IP || ethertype == ETH_P_ARP) ip_version = 4; else if (ethertype == ETH_P_IPV6) ip_version = 6; } return ip_version; } /* Tunnel device follows RFC 6040, see include/net/inet_ecn.h. * And changes inner ip_ecn depending on inner and outer ip_ecn as follows: * +---------+----------------------------------------+ * |Arriving | Arriving Outer Header | * | Inner +---------+---------+---------+----------+ * | Header | Not-ECT | ECT(0) | ECT(1) | CE | * +---------+---------+---------+---------+----------+ * | Not-ECT | Not-ECT | Not-ECT | Not-ECT | <drop> | * | ECT(0) | ECT(0) | ECT(0) | ECT(1) | CE* | * | ECT(1) | ECT(1) | ECT(1) | ECT(1)* | CE* | * | CE | CE | CE | CE | CE | * +---------+---------+---------+---------+----------+ * * Tc matches on inner after decapsulation on tunnel device, but hw offload matches * the inner ip_ecn value before hardware decap action. * * Cells marked are changed from original inner packet ip_ecn value during decap, and * so matching those values on inner ip_ecn before decap will fail. * * The following helper allows offload when inner ip_ecn won't be changed by outer ip_ecn, * except for the outer ip_ecn = CE, where in all cases inner ip_ecn will be changed to CE, * and such we can drop the inner ip_ecn=CE match. */ static int mlx5e_tc_verify_tunnel_ecn(struct mlx5e_priv *priv, struct flow_cls_offload *f, bool *match_inner_ecn) { u8 outer_ecn_mask = 0, outer_ecn_key = 0, inner_ecn_mask = 0, inner_ecn_key = 0; struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct flow_match_ip match; *match_inner_ecn = true; if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) { flow_rule_match_enc_ip(rule, &match); outer_ecn_key = match.key->tos & INET_ECN_MASK; outer_ecn_mask = match.mask->tos & INET_ECN_MASK; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { flow_rule_match_ip(rule, &match); inner_ecn_key = match.key->tos & INET_ECN_MASK; inner_ecn_mask = match.mask->tos & INET_ECN_MASK; } if (outer_ecn_mask != 0 && outer_ecn_mask != INET_ECN_MASK) { NL_SET_ERR_MSG_MOD(extack, "Partial match on enc_tos ecn bits isn't supported"); netdev_warn(priv->netdev, "Partial match on enc_tos ecn bits isn't supported"); return -EOPNOTSUPP; } if (!outer_ecn_mask) { if (!inner_ecn_mask) return 0; NL_SET_ERR_MSG_MOD(extack, "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported"); netdev_warn(priv->netdev, "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported"); return -EOPNOTSUPP; } if (inner_ecn_mask && inner_ecn_mask != INET_ECN_MASK) { NL_SET_ERR_MSG_MOD(extack, "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported"); netdev_warn(priv->netdev, "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported"); return -EOPNOTSUPP; } if (!inner_ecn_mask) return 0; /* Both inner and outer have full mask on ecn */ if (outer_ecn_key == INET_ECN_ECT_1) { /* inner ecn might change by DECAP action */ NL_SET_ERR_MSG_MOD(extack, "Match on enc_tos ecn = ECT(1) isn't supported"); netdev_warn(priv->netdev, "Match on enc_tos ecn = ECT(1) isn't supported"); return -EOPNOTSUPP; } if (outer_ecn_key != INET_ECN_CE) return 0; if (inner_ecn_key != INET_ECN_CE) { /* Can't happen in software, as packet ecn will be changed to CE after decap */ NL_SET_ERR_MSG_MOD(extack, "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported"); netdev_warn(priv->netdev, "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported"); return -EOPNOTSUPP; } /* outer ecn = CE, inner ecn = CE, as decap will change inner ecn to CE in anycase, * drop match on inner ecn */ *match_inner_ecn = false; return 0; } static int parse_tunnel_attr(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev, u8 *match_level, bool *match_inner) { struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(filter_dev); struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct netlink_ext_ack *extack = f->common.extack; bool needs_mapping, sets_mapping; int err; if (!mlx5e_is_eswitch_flow(flow)) { NL_SET_ERR_MSG_MOD(extack, "Match on tunnel is not supported"); return -EOPNOTSUPP; } needs_mapping = !!flow->attr->chain; sets_mapping = flow_requires_tunnel_mapping(flow->attr->chain, f); *match_inner = !needs_mapping; if ((needs_mapping || sets_mapping) && !mlx5_eswitch_reg_c1_loopback_enabled(esw)) { NL_SET_ERR_MSG_MOD(extack, "Chains on tunnel devices isn't supported without register loopback support"); netdev_warn(priv->netdev, "Chains on tunnel devices isn't supported without register loopback support"); return -EOPNOTSUPP; } if (!flow->attr->chain) { err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f, match_level); if (err) { NL_SET_ERR_MSG_MOD(extack, "Failed to parse tunnel attributes"); netdev_warn(priv->netdev, "Failed to parse tunnel attributes"); return err; } /* With mpls over udp we decapsulate using packet reformat * object */ if (!netif_is_bareudp(filter_dev)) flow->attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP; err = mlx5e_tc_set_attr_rx_tun(flow, spec); if (err) return err; } else if (tunnel && tunnel->tunnel_type == MLX5E_TC_TUNNEL_TYPE_VXLAN) { struct mlx5_flow_spec *tmp_spec; tmp_spec = kvzalloc(sizeof(*tmp_spec), GFP_KERNEL); if (!tmp_spec) { NL_SET_ERR_MSG_MOD(extack, "Failed to allocate memory for vxlan tmp spec"); netdev_warn(priv->netdev, "Failed to allocate memory for vxlan tmp spec"); return -ENOMEM; } memcpy(tmp_spec, spec, sizeof(*tmp_spec)); err = mlx5e_tc_tun_parse(filter_dev, priv, tmp_spec, f, match_level); if (err) { kvfree(tmp_spec); NL_SET_ERR_MSG_MOD(extack, "Failed to parse tunnel attributes"); netdev_warn(priv->netdev, "Failed to parse tunnel attributes"); return err; } err = mlx5e_tc_set_attr_rx_tun(flow, tmp_spec); kvfree(tmp_spec); if (err) return err; } if (!needs_mapping && !sets_mapping) return 0; return mlx5e_get_flow_tunnel_id(priv, flow, f, filter_dev); } static void *get_match_inner_headers_criteria(struct mlx5_flow_spec *spec) { return MLX5_ADDR_OF(fte_match_param, spec->match_criteria, inner_headers); } static void *get_match_inner_headers_value(struct mlx5_flow_spec *spec) { return MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers); } static void *get_match_outer_headers_criteria(struct mlx5_flow_spec *spec) { return MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); } static void *get_match_outer_headers_value(struct mlx5_flow_spec *spec) { return MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); } void *mlx5e_get_match_headers_value(u32 flags, struct mlx5_flow_spec *spec) { return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ? get_match_inner_headers_value(spec) : get_match_outer_headers_value(spec); } void *mlx5e_get_match_headers_criteria(u32 flags, struct mlx5_flow_spec *spec) { return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ? get_match_inner_headers_criteria(spec) : get_match_outer_headers_criteria(spec); } static int mlx5e_flower_parse_meta(struct net_device *filter_dev, struct flow_cls_offload *f) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct net_device *ingress_dev; struct flow_match_meta match; if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META)) return 0; flow_rule_match_meta(rule, &match); if (!match.mask->ingress_ifindex) return 0; if (match.mask->ingress_ifindex != 0xFFFFFFFF) { NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask"); return -EOPNOTSUPP; } ingress_dev = __dev_get_by_index(dev_net(filter_dev), match.key->ingress_ifindex); if (!ingress_dev) { NL_SET_ERR_MSG_MOD(extack, "Can't find the ingress port to match on"); return -ENOENT; } if (ingress_dev != filter_dev) { NL_SET_ERR_MSG_MOD(extack, "Can't match on the ingress filter port"); return -EOPNOTSUPP; } return 0; } static bool skip_key_basic(struct net_device *filter_dev, struct flow_cls_offload *f) { /* When doing mpls over udp decap, the user needs to provide * MPLS_UC as the protocol in order to be able to match on mpls * label fields. However, the actual ethertype is IP so we want to * avoid matching on this, otherwise we'll fail the match. */ if (netif_is_bareudp(filter_dev) && f->common.chain_index == 0) return true; return false; } static int __parse_cls_flower(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev, u8 *inner_match_level, u8 *outer_match_level) { struct netlink_ext_ack *extack = f->common.extack; void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers); void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers); void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters); void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters); void *misc_c_3 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, misc_parameters_3); void *misc_v_3 = MLX5_ADDR_OF(fte_match_param, spec->match_value, misc_parameters_3); struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct flow_dissector *dissector = rule->match.dissector; enum fs_flow_table_type fs_type; bool match_inner_ecn = true; u16 addr_type = 0; u8 ip_proto = 0; u8 *match_level; int err; fs_type = mlx5e_is_eswitch_flow(flow) ? FS_FT_FDB : FS_FT_NIC_RX; match_level = outer_match_level; if (dissector->used_keys & ~(BIT(FLOW_DISSECTOR_KEY_META) | BIT(FLOW_DISSECTOR_KEY_CONTROL) | BIT(FLOW_DISSECTOR_KEY_BASIC) | BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | BIT(FLOW_DISSECTOR_KEY_VLAN) | BIT(FLOW_DISSECTOR_KEY_CVLAN) | BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | BIT(FLOW_DISSECTOR_KEY_PORTS) | BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) | BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | BIT(FLOW_DISSECTOR_KEY_TCP) | BIT(FLOW_DISSECTOR_KEY_IP) | BIT(FLOW_DISSECTOR_KEY_CT) | BIT(FLOW_DISSECTOR_KEY_ENC_IP) | BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) | BIT(FLOW_DISSECTOR_KEY_ICMP) | BIT(FLOW_DISSECTOR_KEY_MPLS))) { NL_SET_ERR_MSG_MOD(extack, "Unsupported key"); netdev_dbg(priv->netdev, "Unsupported key used: 0x%x\n", dissector->used_keys); return -EOPNOTSUPP; } if (mlx5e_get_tc_tun(filter_dev)) { bool match_inner = false; err = parse_tunnel_attr(priv, flow, spec, f, filter_dev, outer_match_level, &match_inner); if (err) return err; if (match_inner) { /* header pointers should point to the inner headers * if the packet was decapsulated already. * outer headers are set by parse_tunnel_attr. */ match_level = inner_match_level; headers_c = get_match_inner_headers_criteria(spec); headers_v = get_match_inner_headers_value(spec); } err = mlx5e_tc_verify_tunnel_ecn(priv, f, &match_inner_ecn); if (err) return err; } err = mlx5e_flower_parse_meta(filter_dev, f); if (err) return err; if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC) && !skip_key_basic(filter_dev, f)) { struct flow_match_basic match; flow_rule_match_basic(rule, &match); mlx5e_tc_set_ethertype(priv->mdev, &match, match_level == outer_match_level, headers_c, headers_v); if (match.mask->n_proto) *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) || is_vlan_dev(filter_dev)) { struct flow_dissector_key_vlan filter_dev_mask; struct flow_dissector_key_vlan filter_dev_key; struct flow_match_vlan match; if (is_vlan_dev(filter_dev)) { match.key = &filter_dev_key; match.key->vlan_id = vlan_dev_vlan_id(filter_dev); match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev); match.key->vlan_priority = 0; match.mask = &filter_dev_mask; memset(match.mask, 0xff, sizeof(*match.mask)); match.mask->vlan_priority = 0; } else { flow_rule_match_vlan(rule, &match); } if (match.mask->vlan_id || match.mask->vlan_priority || match.mask->vlan_tpid) { if (match.key->vlan_tpid == htons(ETH_P_8021AD)) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, svlan_tag, 1); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1); } MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, match.mask->vlan_id); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, match.key->vlan_id); MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, match.mask->vlan_priority); MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, match.key->vlan_priority); *match_level = MLX5_MATCH_L2; if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN) && match.mask->vlan_eth_type && MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid, fs_type)) { MLX5_SET(fte_match_set_misc, misc_c, outer_second_cvlan_tag, 1); spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS; } } } else if (*match_level != MLX5_MATCH_NONE) { /* cvlan_tag enabled in match criteria and * disabled in match value means both S & C tags * don't exist (untagged of both) */ MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1); *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) { struct flow_match_vlan match; flow_rule_match_cvlan(rule, &match); if (match.mask->vlan_id || match.mask->vlan_priority || match.mask->vlan_tpid) { if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid, fs_type)) { NL_SET_ERR_MSG_MOD(extack, "Matching on CVLAN is not supported"); return -EOPNOTSUPP; } if (match.key->vlan_tpid == htons(ETH_P_8021AD)) { MLX5_SET(fte_match_set_misc, misc_c, outer_second_svlan_tag, 1); MLX5_SET(fte_match_set_misc, misc_v, outer_second_svlan_tag, 1); } else { MLX5_SET(fte_match_set_misc, misc_c, outer_second_cvlan_tag, 1); MLX5_SET(fte_match_set_misc, misc_v, outer_second_cvlan_tag, 1); } MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid, match.mask->vlan_id); MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid, match.key->vlan_id); MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio, match.mask->vlan_priority); MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio, match.key->vlan_priority); *match_level = MLX5_MATCH_L2; spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS; } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { struct flow_match_eth_addrs match; flow_rule_match_eth_addrs(rule, &match); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dmac_47_16), match.mask->dst); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dmac_47_16), match.key->dst); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, smac_47_16), match.mask->src); ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, smac_47_16), match.key->src); if (!is_zero_ether_addr(match.mask->src) || !is_zero_ether_addr(match.mask->dst)) *match_level = MLX5_MATCH_L2; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { struct flow_match_control match; flow_rule_match_control(rule, &match); addr_type = match.key->addr_type; /* the HW doesn't support frag first/later */ if (match.mask->flags & FLOW_DIS_FIRST_FRAG) { NL_SET_ERR_MSG_MOD(extack, "Match on frag first/later is not supported"); return -EOPNOTSUPP; } if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1); MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, match.key->flags & FLOW_DIS_IS_FRAGMENT); /* the HW doesn't need L3 inline to match on frag=no */ if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT)) *match_level = MLX5_MATCH_L2; /* *** L2 attributes parsing up to here *** */ else *match_level = MLX5_MATCH_L3; } } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { struct flow_match_basic match; flow_rule_match_basic(rule, &match); ip_proto = match.key->ip_proto; MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, match.mask->ip_proto); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, match.key->ip_proto); if (match.mask->ip_proto) *match_level = MLX5_MATCH_L3; } if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { struct flow_match_ipv4_addrs match; flow_rule_match_ipv4_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv4_layout.ipv4), &match.mask->src, sizeof(match.mask->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv4_layout.ipv4), &match.key->src, sizeof(match.key->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &match.mask->dst, sizeof(match.mask->dst)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), &match.key->dst, sizeof(match.key->dst)); if (match.mask->src || match.mask->dst) *match_level = MLX5_MATCH_L3; } if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { struct flow_match_ipv6_addrs match; flow_rule_match_ipv6_addrs(rule, &match); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.mask->src, sizeof(match.mask->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, src_ipv4_src_ipv6.ipv6_layout.ipv6), &match.key->src, sizeof(match.key->src)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.mask->dst, sizeof(match.mask->dst)); memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, dst_ipv4_dst_ipv6.ipv6_layout.ipv6), &match.key->dst, sizeof(match.key->dst)); if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY || ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY) *match_level = MLX5_MATCH_L3; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) { struct flow_match_ip match; flow_rule_match_ip(rule, &match); if (match_inner_ecn) { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, match.mask->tos & 0x3); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, match.key->tos & 0x3); } MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, match.mask->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, match.key->tos >> 2); MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, match.mask->ttl); MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, match.key->ttl); if (match.mask->ttl && !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, ft_field_support.outer_ipv4_ttl)) { NL_SET_ERR_MSG_MOD(extack, "Matching on TTL is not supported"); return -EOPNOTSUPP; } if (match.mask->tos || match.mask->ttl) *match_level = MLX5_MATCH_L3; } /* *** L3 attributes parsing up to here *** */ if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { struct flow_match_ports match; flow_rule_match_ports(rule, &match); switch (ip_proto) { case IPPROTO_TCP: MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_sport, ntohs(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_sport, ntohs(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_dport, ntohs(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_dport, ntohs(match.key->dst)); break; case IPPROTO_UDP: MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_sport, ntohs(match.mask->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_sport, ntohs(match.key->src)); MLX5_SET(fte_match_set_lyr_2_4, headers_c, udp_dport, ntohs(match.mask->dst)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, udp_dport, ntohs(match.key->dst)); break; default: NL_SET_ERR_MSG_MOD(extack, "Only UDP and TCP transports are supported for L4 matching"); netdev_err(priv->netdev, "Only UDP and TCP transport are supported\n"); return -EINVAL; } if (match.mask->src || match.mask->dst) *match_level = MLX5_MATCH_L4; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) { struct flow_match_tcp match; flow_rule_match_tcp(rule, &match); MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags, ntohs(match.mask->flags)); MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags, ntohs(match.key->flags)); if (match.mask->flags) *match_level = MLX5_MATCH_L4; } if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP)) { struct flow_match_icmp match; flow_rule_match_icmp(rule, &match); switch (ip_proto) { case IPPROTO_ICMP: if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) & MLX5_FLEX_PROTO_ICMP)) { NL_SET_ERR_MSG_MOD(extack, "Match on Flex protocols for ICMP is not supported"); return -EOPNOTSUPP; } MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_type, match.mask->type); MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_type, match.key->type); MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_code, match.mask->code); MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_code, match.key->code); break; case IPPROTO_ICMPV6: if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) & MLX5_FLEX_PROTO_ICMPV6)) { NL_SET_ERR_MSG_MOD(extack, "Match on Flex protocols for ICMPV6 is not supported"); return -EOPNOTSUPP; } MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_type, match.mask->type); MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_type, match.key->type); MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_code, match.mask->code); MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_code, match.key->code); break; default: NL_SET_ERR_MSG_MOD(extack, "Code and type matching only with ICMP and ICMPv6"); netdev_err(priv->netdev, "Code and type matching only with ICMP and ICMPv6\n"); return -EINVAL; } if (match.mask->code || match.mask->type) { *match_level = MLX5_MATCH_L4; spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_3; } } /* Currently supported only for MPLS over UDP */ if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) && !netif_is_bareudp(filter_dev)) { NL_SET_ERR_MSG_MOD(extack, "Matching on MPLS is supported only for MPLS over UDP"); netdev_err(priv->netdev, "Matching on MPLS is supported only for MPLS over UDP\n"); return -EOPNOTSUPP; } return 0; } static int parse_cls_flower(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_spec *spec, struct flow_cls_offload *f, struct net_device *filter_dev) { u8 inner_match_level, outer_match_level, non_tunnel_match_level; struct netlink_ext_ack *extack = f->common.extack; struct mlx5_core_dev *dev = priv->mdev; struct mlx5_eswitch *esw = dev->priv.eswitch; struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *rep; bool is_eswitch_flow; int err; inner_match_level = MLX5_MATCH_NONE; outer_match_level = MLX5_MATCH_NONE; err = __parse_cls_flower(priv, flow, spec, f, filter_dev, &inner_match_level, &outer_match_level); non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ? outer_match_level : inner_match_level; is_eswitch_flow = mlx5e_is_eswitch_flow(flow); if (!err && is_eswitch_flow) { rep = rpriv->rep; if (rep->vport != MLX5_VPORT_UPLINK && (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE && esw->offloads.inline_mode < non_tunnel_match_level)) { NL_SET_ERR_MSG_MOD(extack, "Flow is not offloaded due to min inline setting"); netdev_warn(priv->netdev, "Flow is not offloaded due to min inline setting, required %d actual %d\n", non_tunnel_match_level, esw->offloads.inline_mode); return -EOPNOTSUPP; } } flow->attr->inner_match_level = inner_match_level; flow->attr->outer_match_level = outer_match_level; return err; } struct mlx5_fields { u8 field; u8 field_bsize; u32 field_mask; u32 offset; u32 match_offset; }; #define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \ {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \ offsetof(struct pedit_headers, field) + (off), \ MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)} /* masked values are the same and there are no rewrites that do not have a * match. */ #define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \ type matchmaskx = *(type *)(matchmaskp); \ type matchvalx = *(type *)(matchvalp); \ type maskx = *(type *)(maskp); \ type valx = *(type *)(valp); \ \ (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \ matchmaskx)); \ }) static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp, void *matchmaskp, u8 bsize) { bool same = false; switch (bsize) { case 8: same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp); break; case 16: same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp); break; case 32: same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp); break; } return same; } static struct mlx5_fields fields[] = { OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16), OFFLOAD(DMAC_15_0, 16, U16_MAX, eth.h_dest[4], 0, dmac_15_0), OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16), OFFLOAD(SMAC_15_0, 16, U16_MAX, eth.h_source[4], 0, smac_15_0), OFFLOAD(ETHERTYPE, 16, U16_MAX, eth.h_proto, 0, ethertype), OFFLOAD(FIRST_VID, 16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid), OFFLOAD(IP_DSCP, 8, 0xfc, ip4.tos, 0, ip_dscp), OFFLOAD(IP_TTL, 8, U8_MAX, ip4.ttl, 0, ttl_hoplimit), OFFLOAD(SIPV4, 32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4), OFFLOAD(DIPV4, 32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4), OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[0]), OFFLOAD(SIPV6_95_64, 32, U32_MAX, ip6.saddr.s6_addr32[1], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[4]), OFFLOAD(SIPV6_63_32, 32, U32_MAX, ip6.saddr.s6_addr32[2], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[8]), OFFLOAD(SIPV6_31_0, 32, U32_MAX, ip6.saddr.s6_addr32[3], 0, src_ipv4_src_ipv6.ipv6_layout.ipv6[12]), OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]), OFFLOAD(DIPV6_95_64, 32, U32_MAX, ip6.daddr.s6_addr32[1], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]), OFFLOAD(DIPV6_63_32, 32, U32_MAX, ip6.daddr.s6_addr32[2], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]), OFFLOAD(DIPV6_31_0, 32, U32_MAX, ip6.daddr.s6_addr32[3], 0, dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]), OFFLOAD(IPV6_HOPLIMIT, 8, U8_MAX, ip6.hop_limit, 0, ttl_hoplimit), OFFLOAD(IP_DSCP, 16, 0xc00f, ip6, 0, ip_dscp), OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source, 0, tcp_sport), OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest, 0, tcp_dport), /* in linux iphdr tcp_flags is 8 bits long */ OFFLOAD(TCP_FLAGS, 8, U8_MAX, tcp.ack_seq, 5, tcp_flags), OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport), OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest, 0, udp_dport), }; static unsigned long mask_to_le(unsigned long mask, int size) { __be32 mask_be32; __be16 mask_be16; if (size == 32) { mask_be32 = (__force __be32)(mask); mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32)); } else if (size == 16) { mask_be32 = (__force __be32)(mask); mask_be16 = *(__be16 *)&mask_be32; mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16)); } return mask; } static int offload_pedit_fields(struct mlx5e_priv *priv, int namespace, struct mlx5e_tc_flow_parse_attr *parse_attr, u32 *action_flags, struct netlink_ext_ack *extack) { struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals; struct pedit_headers_action *hdrs = parse_attr->hdrs; void *headers_c, *headers_v, *action, *vals_p; u32 *s_masks_p, *a_masks_p, s_mask, a_mask; struct mlx5e_tc_mod_hdr_acts *mod_acts; unsigned long mask, field_mask; int i, first, last, next_z; struct mlx5_fields *f; u8 cmd; mod_acts = &parse_attr->mod_hdr_acts; headers_c = mlx5e_get_match_headers_criteria(*action_flags, &parse_attr->spec); headers_v = mlx5e_get_match_headers_value(*action_flags, &parse_attr->spec); set_masks = &hdrs[0].masks; add_masks = &hdrs[1].masks; set_vals = &hdrs[0].vals; add_vals = &hdrs[1].vals; for (i = 0; i < ARRAY_SIZE(fields); i++) { bool skip; f = &fields[i]; /* avoid seeing bits set from previous iterations */ s_mask = 0; a_mask = 0; s_masks_p = (void *)set_masks + f->offset; a_masks_p = (void *)add_masks + f->offset; s_mask = *s_masks_p & f->field_mask; a_mask = *a_masks_p & f->field_mask; 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"); netdev_warn(priv->netdev, "mlx5: can't set and add to the same HW field (%x)\n", f->field); return -EOPNOTSUPP; } skip = false; if (s_mask) { void *match_mask = headers_c + f->match_offset; void *match_val = headers_v + f->match_offset; cmd = MLX5_ACTION_TYPE_SET; mask = s_mask; vals_p = (void *)set_vals + f->offset; /* don't rewrite if we have a match on the same value */ if (cmp_val_mask(vals_p, s_masks_p, match_val, match_mask, f->field_bsize)) skip = true; /* clear to denote we consumed this field */ *s_masks_p &= ~f->field_mask; } else { cmd = MLX5_ACTION_TYPE_ADD; mask = a_mask; vals_p = (void *)add_vals + f->offset; /* add 0 is no change */ if ((*(u32 *)vals_p & f->field_mask) == 0) skip = true; /* clear to denote we consumed this field */ *a_masks_p &= ~f->field_mask; } if (skip) continue; mask = mask_to_le(mask, f->field_bsize); first = find_first_bit(&mask, f->field_bsize); next_z = find_next_zero_bit(&mask, f->field_bsize, first); last = find_last_bit(&mask, f->field_bsize); if (first < next_z && next_z < last) { NL_SET_ERR_MSG_MOD(extack, "rewrite of few sub-fields isn't supported"); netdev_warn(priv->netdev, "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n", mask); return -EOPNOTSUPP; } action = mlx5e_mod_hdr_alloc(priv->mdev, namespace, mod_acts); if (IS_ERR(action)) { NL_SET_ERR_MSG_MOD(extack, "too many pedit actions, can't offload"); mlx5_core_warn(priv->mdev, "mlx5: parsed %d pedit actions, can't do more\n", mod_acts->num_actions); return PTR_ERR(action); } MLX5_SET(set_action_in, action, action_type, cmd); MLX5_SET(set_action_in, action, field, f->field); if (cmd == MLX5_ACTION_TYPE_SET) { int start; field_mask = mask_to_le(f->field_mask, f->field_bsize); /* if field is bit sized it can start not from first bit */ start = find_first_bit(&field_mask, f->field_bsize); MLX5_SET(set_action_in, action, offset, first - start); /* length is num of bits to be written, zero means length of 32 */ MLX5_SET(set_action_in, action, length, (last - first + 1)); } if (f->field_bsize == 32) MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first); else if (f->field_bsize == 16) MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first); else if (f->field_bsize == 8) MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first); ++mod_acts->num_actions; } return 0; } static const struct pedit_headers zero_masks = {}; static int verify_offload_pedit_fields(struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct netlink_ext_ack *extack) { struct pedit_headers *cmd_masks; u8 cmd; for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) { cmd_masks = &parse_attr->hdrs[cmd].masks; if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) { NL_SET_ERR_MSG_MOD(extack, "attempt to offload an unsupported field"); netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd); print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS, 16, 1, cmd_masks, sizeof(zero_masks), true); return -EOPNOTSUPP; } } return 0; } static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace, struct mlx5e_tc_flow_parse_attr *parse_attr, u32 *action_flags, struct netlink_ext_ack *extack) { int err; err = offload_pedit_fields(priv, namespace, parse_attr, action_flags, extack); if (err) goto out_dealloc_parsed_actions; err = verify_offload_pedit_fields(priv, parse_attr, extack); if (err) goto out_dealloc_parsed_actions; return 0; out_dealloc_parsed_actions: mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts); return err; } struct ip_ttl_word { __u8 ttl; __u8 protocol; __sum16 check; }; struct ipv6_hoplimit_word { __be16 payload_len; __u8 nexthdr; __u8 hop_limit; }; static bool is_action_keys_supported(const struct flow_action_entry *act, bool ct_flow, bool *modify_ip_header, bool *modify_tuple, struct netlink_ext_ack *extack) { u32 mask, offset; u8 htype; htype = act->mangle.htype; offset = act->mangle.offset; mask = ~act->mangle.mask; /* For IPv4 & IPv6 header check 4 byte word, * to determine that modified fields * are NOT ttl & hop_limit only. */ if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) { struct ip_ttl_word *ttl_word = (struct ip_ttl_word *)&mask; if (offset != offsetof(struct iphdr, ttl) || ttl_word->protocol || ttl_word->check) { *modify_ip_header = true; } if (offset >= offsetof(struct iphdr, saddr)) *modify_tuple = true; if (ct_flow && *modify_tuple) { NL_SET_ERR_MSG_MOD(extack, "can't offload re-write of ipv4 address with action ct"); return false; } } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) { struct ipv6_hoplimit_word *hoplimit_word = (struct ipv6_hoplimit_word *)&mask; if (offset != offsetof(struct ipv6hdr, payload_len) || hoplimit_word->payload_len || hoplimit_word->nexthdr) { *modify_ip_header = true; } if (ct_flow && offset >= offsetof(struct ipv6hdr, saddr)) *modify_tuple = true; if (ct_flow && *modify_tuple) { NL_SET_ERR_MSG_MOD(extack, "can't offload re-write of ipv6 address with action ct"); return false; } } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_TCP || htype == FLOW_ACT_MANGLE_HDR_TYPE_UDP) { *modify_tuple = true; if (ct_flow) { NL_SET_ERR_MSG_MOD(extack, "can't offload re-write of transport header ports with action ct"); return false; } } return true; } static bool modify_tuple_supported(bool modify_tuple, bool ct_clear, bool ct_flow, struct netlink_ext_ack *extack, struct mlx5e_priv *priv, struct mlx5_flow_spec *spec) { if (!modify_tuple || ct_clear) return true; if (ct_flow) { NL_SET_ERR_MSG_MOD(extack, "can't offload tuple modification with non-clear ct()"); netdev_info(priv->netdev, "can't offload tuple modification with non-clear ct()"); return false; } /* Add ct_state=-trk match so it will be offloaded for non ct flows * (or after clear action), as otherwise, since the tuple is changed, * we can't restore ct state */ if (mlx5_tc_ct_add_no_trk_match(spec)) { NL_SET_ERR_MSG_MOD(extack, "can't offload tuple modification with ct matches and no ct(clear) action"); netdev_info(priv->netdev, "can't offload tuple modification with ct matches and no ct(clear) action"); return false; } return true; } static bool modify_header_match_supported(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, struct flow_action *flow_action, u32 actions, bool ct_flow, bool ct_clear, struct netlink_ext_ack *extack) { const struct flow_action_entry *act; bool modify_ip_header, modify_tuple; void *headers_c; void *headers_v; u16 ethertype; u8 ip_proto; int i; headers_c = mlx5e_get_match_headers_criteria(actions, spec); headers_v = mlx5e_get_match_headers_value(actions, spec); ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype); /* for non-IP we only re-write MACs, so we're okay */ if (MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_version) == 0 && ethertype != ETH_P_IP && ethertype != ETH_P_IPV6) goto out_ok; modify_ip_header = false; modify_tuple = false; flow_action_for_each(i, act, flow_action) { if (act->id != FLOW_ACTION_MANGLE && act->id != FLOW_ACTION_ADD) continue; if (!is_action_keys_supported(act, ct_flow, &modify_ip_header, &modify_tuple, extack)) return false; } if (!modify_tuple_supported(modify_tuple, ct_clear, ct_flow, extack, priv, spec)) return false; 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"); netdev_info(priv->netdev, "can't offload re-write of ip proto %d\n", ip_proto); return false; } out_ok: return true; } static bool actions_match_supported_fdb(struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr; bool ct_flow, ct_clear; ct_clear = flow->attr->ct_attr.ct_action & TCA_CT_ACT_CLEAR; ct_flow = flow_flag_test(flow, CT) && !ct_clear; if (esw_attr->split_count && ct_flow && !MLX5_CAP_GEN(esw_attr->in_mdev, reg_c_preserve)) { /* All registers used by ct are cleared when using * split rules. */ NL_SET_ERR_MSG_MOD(extack, "Can't offload mirroring with action ct"); return false; } if (esw_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 false; } return true; } static bool actions_match_supported(struct mlx5e_priv *priv, struct flow_action *flow_action, u32 actions, struct mlx5e_tc_flow_parse_attr *parse_attr, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { bool ct_flow, ct_clear; ct_clear = flow->attr->ct_attr.ct_action & TCA_CT_ACT_CLEAR; ct_flow = flow_flag_test(flow, CT) && !ct_clear; if (!(actions & (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) { NL_SET_ERR_MSG_MOD(extack, "Rule must have at least one forward/drop action"); return false; } if (!(~actions & (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) { NL_SET_ERR_MSG_MOD(extack, "Rule cannot support forward+drop action"); return false; } if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR && actions & MLX5_FLOW_CONTEXT_ACTION_DROP) { NL_SET_ERR_MSG_MOD(extack, "Drop with modify header action is not supported"); return false; } if (!(~actions & (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) { NL_SET_ERR_MSG_MOD(extack, "Rule cannot support forward+drop action"); return false; } if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR && actions & MLX5_FLOW_CONTEXT_ACTION_DROP) { NL_SET_ERR_MSG_MOD(extack, "Drop with modify header action is not supported"); return false; } if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR && !modify_header_match_supported(priv, &parse_attr->spec, flow_action, actions, ct_flow, ct_clear, extack)) return false; if (mlx5e_is_eswitch_flow(flow) && !actions_match_supported_fdb(priv, parse_attr, flow, extack)) return false; return true; } static bool same_port_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv) { return priv->mdev == peer_priv->mdev; } bool mlx5e_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 actions_prepare_mod_hdr_actions(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr, struct netlink_ext_ack *extack) { struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr; struct pedit_headers_action *hdrs = parse_attr->hdrs; enum mlx5_flow_namespace_type ns_type; int err; if (!hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits && !hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) return 0; ns_type = mlx5e_get_flow_namespace(flow); err = alloc_tc_pedit_action(priv, ns_type, parse_attr, &attr->action, extack); if (err) return err; if (parse_attr->mod_hdr_acts.num_actions > 0) return 0; /* In case all pedit actions are skipped, remove the MOD_HDR flag. */ attr->action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts); if (ns_type != MLX5_FLOW_NAMESPACE_FDB) return 0; if (!((attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) || (attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH))) attr->esw_attr->split_count = 0; return 0; } static struct mlx5_flow_attr* mlx5e_clone_flow_attr_for_post_act(struct mlx5_flow_attr *attr, enum mlx5_flow_namespace_type ns_type) { struct mlx5e_tc_flow_parse_attr *parse_attr; u32 attr_sz = ns_to_attr_sz(ns_type); struct mlx5_flow_attr *attr2; attr2 = mlx5_alloc_flow_attr(ns_type); parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL); if (!attr2 || !parse_attr) { kvfree(parse_attr); kfree(attr2); return NULL; } memcpy(attr2, attr, attr_sz); INIT_LIST_HEAD(&attr2->list); parse_attr->filter_dev = attr->parse_attr->filter_dev; attr2->action = 0; attr2->flags = 0; attr2->parse_attr = parse_attr; attr2->dest_chain = 0; attr2->dest_ft = NULL; if (ns_type == MLX5_FLOW_NAMESPACE_FDB) { attr2->esw_attr->out_count = 0; attr2->esw_attr->split_count = 0; } return attr2; } static struct mlx5_core_dev * get_flow_counter_dev(struct mlx5e_tc_flow *flow) { return mlx5e_is_eswitch_flow(flow) ? flow->attr->esw_attr->counter_dev : flow->priv->mdev; } struct mlx5_flow_attr * mlx5e_tc_get_encap_attr(struct mlx5e_tc_flow *flow) { struct mlx5_esw_flow_attr *esw_attr; struct mlx5_flow_attr *attr; int i; list_for_each_entry(attr, &flow->attrs, list) { esw_attr = attr->esw_attr; for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) { if (esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP) return attr; } } return NULL; } void mlx5e_tc_unoffload_flow_post_acts(struct mlx5e_tc_flow *flow) { struct mlx5e_post_act *post_act = get_post_action(flow->priv); struct mlx5_flow_attr *attr; list_for_each_entry(attr, &flow->attrs, list) { if (list_is_last(&attr->list, &flow->attrs)) break; mlx5e_tc_post_act_unoffload(post_act, attr->post_act_handle); } } static void free_flow_post_acts(struct mlx5e_tc_flow *flow) { struct mlx5_core_dev *counter_dev = get_flow_counter_dev(flow); struct mlx5e_post_act *post_act = get_post_action(flow->priv); struct mlx5_flow_attr *attr, *tmp; bool vf_tun; list_for_each_entry_safe(attr, tmp, &flow->attrs, list) { if (list_is_last(&attr->list, &flow->attrs)) break; if (attr->post_act_handle) mlx5e_tc_post_act_del(post_act, attr->post_act_handle); clean_encap_dests(flow->priv, flow, attr, &vf_tun); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) mlx5_fc_destroy(counter_dev, attr->counter); if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts); if (attr->modify_hdr) mlx5_modify_header_dealloc(flow->priv->mdev, attr->modify_hdr); } list_del(&attr->list); kvfree(attr->parse_attr); kfree(attr); } } int mlx5e_tc_offload_flow_post_acts(struct mlx5e_tc_flow *flow) { struct mlx5e_post_act *post_act = get_post_action(flow->priv); struct mlx5_flow_attr *attr; int err = 0; list_for_each_entry(attr, &flow->attrs, list) { if (list_is_last(&attr->list, &flow->attrs)) break; err = mlx5e_tc_post_act_offload(post_act, attr->post_act_handle); if (err) break; } return err; } /* TC filter rule HW translation: * * +---------------------+ * + ft prio (tc chain) + * + original match + * +---------------------+ * | * | if multi table action * | * v * +---------------------+ * + post act ft |<----. * + match fte id | | split on multi table action * + do actions |-----' * +---------------------+ * | * | * v * Do rest of the actions after last multi table action. */ static int alloc_flow_post_acts(struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5e_post_act *post_act = get_post_action(flow->priv); struct mlx5_flow_attr *attr, *next_attr = NULL; struct mlx5e_post_act_handle *handle; bool vf_tun; int err; /* This is going in reverse order as needed. * The first entry is the last attribute. */ list_for_each_entry(attr, &flow->attrs, list) { if (!next_attr) { /* Set counter action on last post act rule. */ attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; } else { err = mlx5e_tc_act_set_next_post_act(flow, attr, next_attr); if (err) goto out_free; } /* Don't add post_act rule for first attr (last in the list). * It's being handled by the caller. */ if (list_is_last(&attr->list, &flow->attrs)) break; err = set_encap_dests(flow->priv, flow, attr, extack, &vf_tun); if (err) goto out_free; err = actions_prepare_mod_hdr_actions(flow->priv, flow, attr, extack); if (err) goto out_free; if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { err = mlx5e_tc_add_flow_mod_hdr(flow->priv, flow, attr); if (err) goto out_free; } if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { err = alloc_flow_attr_counter(get_flow_counter_dev(flow), attr); if (err) goto out_free; } handle = mlx5e_tc_post_act_add(post_act, attr); if (IS_ERR(handle)) { err = PTR_ERR(handle); goto out_free; } attr->post_act_handle = handle; next_attr = attr; } if (flow_flag_test(flow, SLOW)) goto out; err = mlx5e_tc_offload_flow_post_acts(flow); if (err) goto out_free; out: return 0; out_free: free_flow_post_acts(flow); return err; } static int parse_tc_actions(struct mlx5e_tc_act_parse_state *parse_state, struct flow_action *flow_action) { struct netlink_ext_ack *extack = parse_state->extack; struct mlx5e_tc_flow_action flow_action_reorder; struct mlx5e_tc_flow *flow = parse_state->flow; struct mlx5_flow_attr *attr = flow->attr; enum mlx5_flow_namespace_type ns_type; struct mlx5e_priv *priv = flow->priv; struct flow_action_entry *act, **_act; struct mlx5e_tc_act *tc_act; int err, i; flow_action_reorder.num_entries = flow_action->num_entries; flow_action_reorder.entries = kcalloc(flow_action->num_entries, sizeof(flow_action), GFP_KERNEL); if (!flow_action_reorder.entries) return -ENOMEM; mlx5e_tc_act_reorder_flow_actions(flow_action, &flow_action_reorder); ns_type = mlx5e_get_flow_namespace(flow); list_add(&attr->list, &flow->attrs); flow_action_for_each(i, _act, &flow_action_reorder) { act = *_act; tc_act = mlx5e_tc_act_get(act->id, ns_type); if (!tc_act) { NL_SET_ERR_MSG_MOD(extack, "Not implemented offload action"); err = -EOPNOTSUPP; goto out_free; } if (!tc_act->can_offload(parse_state, act, i, attr)) { err = -EOPNOTSUPP; goto out_free; } err = tc_act->parse_action(parse_state, act, priv, attr); if (err) goto out_free; parse_state->actions |= attr->action; /* Split attr for multi table act if not the last act. */ if (tc_act->is_multi_table_act && tc_act->is_multi_table_act(priv, act, attr) && i < flow_action_reorder.num_entries - 1) { err = mlx5e_tc_act_post_parse(parse_state, flow_action, attr, ns_type); if (err) goto out_free; attr = mlx5e_clone_flow_attr_for_post_act(flow->attr, ns_type); if (!attr) { err = -ENOMEM; goto out_free; } list_add(&attr->list, &flow->attrs); } } kfree(flow_action_reorder.entries); err = mlx5e_tc_act_post_parse(parse_state, flow_action, attr, ns_type); if (err) goto out_free_post_acts; err = alloc_flow_post_acts(flow, extack); if (err) goto out_free_post_acts; return 0; out_free: kfree(flow_action_reorder.entries); out_free_post_acts: free_flow_post_acts(flow); return err; } static int flow_action_supported(struct flow_action *flow_action, struct netlink_ext_ack *extack) { if (!flow_action_has_entries(flow_action)) { NL_SET_ERR_MSG_MOD(extack, "Flow action doesn't have any entries"); return -EINVAL; } if (!flow_action_hw_stats_check(flow_action, extack, FLOW_ACTION_HW_STATS_DELAYED_BIT)) { NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported"); return -EOPNOTSUPP; } return 0; } static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5e_tc_act_parse_state *parse_state; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_flow_attr *attr = flow->attr; int err; err = flow_action_supported(flow_action, extack); if (err) return err; attr->nic_attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; parse_attr = attr->parse_attr; parse_state = &parse_attr->parse_state; mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack); parse_state->ct_priv = get_ct_priv(priv); err = parse_tc_actions(parse_state, flow_action); if (err) return err; err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack); if (err) return err; if (!actions_match_supported(priv, flow_action, parse_state->actions, parse_attr, flow, extack)) return -EOPNOTSUPP; return 0; } static bool is_merged_eswitch_vfs(struct mlx5e_priv *priv, struct net_device *peer_netdev) { struct mlx5e_priv *peer_priv; peer_priv = netdev_priv(peer_netdev); return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) && mlx5e_eswitch_vf_rep(priv->netdev) && mlx5e_eswitch_vf_rep(peer_netdev) && mlx5e_same_hw_devs(priv, peer_priv)); } static bool same_hw_reps(struct mlx5e_priv *priv, struct net_device *peer_netdev) { struct mlx5e_priv *peer_priv; peer_priv = netdev_priv(peer_netdev); return mlx5e_eswitch_rep(priv->netdev) && mlx5e_eswitch_rep(peer_netdev) && mlx5e_same_hw_devs(priv, peer_priv); } static bool is_lag_dev(struct mlx5e_priv *priv, struct net_device *peer_netdev) { return ((mlx5_lag_is_sriov(priv->mdev) || mlx5_lag_is_multipath(priv->mdev)) && same_hw_reps(priv, peer_netdev)); } static bool is_multiport_eligible(struct mlx5e_priv *priv, struct net_device *out_dev) { if (same_hw_reps(priv, out_dev) && MLX5_CAP_PORT_SELECTION(priv->mdev, port_select_flow_table) && MLX5_CAP_GEN(priv->mdev, create_lag_when_not_master_up)) return true; return false; } bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv, struct net_device *out_dev) { if (is_merged_eswitch_vfs(priv, out_dev)) return true; if (is_multiport_eligible(priv, out_dev)) return true; if (is_lag_dev(priv, out_dev)) return true; return mlx5e_eswitch_rep(out_dev) && same_port_devs(priv, netdev_priv(out_dev)); } int mlx5e_set_fwd_to_int_port_actions(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr, int ifindex, enum mlx5e_tc_int_port_type type, u32 *action, int out_index) { struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr; struct mlx5e_tc_int_port_priv *int_port_priv; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_int_port *dest_int_port; int err; parse_attr = attr->parse_attr; int_port_priv = mlx5e_get_int_port_priv(priv); dest_int_port = mlx5e_tc_int_port_get(int_port_priv, ifindex, type); if (IS_ERR(dest_int_port)) return PTR_ERR(dest_int_port); err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG, mlx5e_tc_int_port_get_metadata(dest_int_port)); if (err) { mlx5e_tc_int_port_put(int_port_priv, dest_int_port); return err; } *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; esw_attr->dest_int_port = dest_int_port; esw_attr->dests[out_index].flags |= MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE; /* Forward to root fdb for matching against the new source vport */ attr->dest_chain = 0; return 0; } static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack) { struct mlx5e_tc_act_parse_state *parse_state; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_flow_attr *attr = flow->attr; struct mlx5_esw_flow_attr *esw_attr; struct net_device *filter_dev; int err; err = flow_action_supported(flow_action, extack); if (err) return err; esw_attr = attr->esw_attr; parse_attr = attr->parse_attr; filter_dev = parse_attr->filter_dev; parse_state = &parse_attr->parse_state; mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack); parse_state->ct_priv = get_ct_priv(priv); err = parse_tc_actions(parse_state, flow_action); if (err) return err; /* Forward to/from internal port can only have 1 dest */ if ((netif_is_ovs_master(filter_dev) || esw_attr->dest_int_port) && esw_attr->out_count > 1) { NL_SET_ERR_MSG_MOD(extack, "Rules with internal port can have only one destination"); return -EOPNOTSUPP; } /* Forward from tunnel/internal port to internal port is not supported */ if ((mlx5e_get_tc_tun(filter_dev) || netif_is_ovs_master(filter_dev)) && esw_attr->dest_int_port) { NL_SET_ERR_MSG_MOD(extack, "Forwarding from tunnel/internal port to internal port is not supported"); return -EOPNOTSUPP; } err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack); if (err) return err; if (!actions_match_supported(priv, flow_action, parse_state->actions, parse_attr, flow, extack)) return -EOPNOTSUPP; return 0; } static void get_flags(int flags, unsigned long *flow_flags) { unsigned long __flow_flags = 0; if (flags & MLX5_TC_FLAG(INGRESS)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS); if (flags & MLX5_TC_FLAG(EGRESS)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS); if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH); if (flags & MLX5_TC_FLAG(NIC_OFFLOAD)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC); if (flags & MLX5_TC_FLAG(FT_OFFLOAD)) __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_FT); *flow_flags = __flow_flags; } static const struct rhashtable_params tc_ht_params = { .head_offset = offsetof(struct mlx5e_tc_flow, node), .key_offset = offsetof(struct mlx5e_tc_flow, cookie), .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie), .automatic_shrinking = true, }; static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv, unsigned long flags) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5e_rep_priv *rpriv; if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) { rpriv = priv->ppriv; return &rpriv->tc_ht; } else /* NIC offload */ return &tc->ht; } static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow) { struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr; struct mlx5_flow_attr *attr = flow->attr; bool is_rep_ingress = esw_attr->in_rep->vport != MLX5_VPORT_UPLINK && flow_flag_test(flow, INGRESS); bool act_is_encap = !!(attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT); bool esw_paired = mlx5_devcom_is_paired(esw_attr->in_mdev->priv.devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!esw_paired) return false; if ((mlx5_lag_is_sriov(esw_attr->in_mdev) || mlx5_lag_is_multipath(esw_attr->in_mdev)) && (is_rep_ingress || act_is_encap)) return true; return false; } struct mlx5_flow_attr * mlx5_alloc_flow_attr(enum mlx5_flow_namespace_type type) { u32 ex_attr_size = (type == MLX5_FLOW_NAMESPACE_FDB) ? sizeof(struct mlx5_esw_flow_attr) : sizeof(struct mlx5_nic_flow_attr); struct mlx5_flow_attr *attr; attr = kzalloc(sizeof(*attr) + ex_attr_size, GFP_KERNEL); if (!attr) return attr; INIT_LIST_HEAD(&attr->list); return attr; } static int mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size, struct flow_cls_offload *f, unsigned long flow_flags, struct mlx5e_tc_flow_parse_attr **__parse_attr, struct mlx5e_tc_flow **__flow) { struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5_flow_attr *attr; struct mlx5e_tc_flow *flow; int err = -ENOMEM; int out_index; flow = kzalloc(sizeof(*flow), GFP_KERNEL); parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL); if (!parse_attr || !flow) goto err_free; flow->flags = flow_flags; flow->cookie = f->cookie; flow->priv = priv; attr = mlx5_alloc_flow_attr(mlx5e_get_flow_namespace(flow)); if (!attr) goto err_free; flow->attr = attr; for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) INIT_LIST_HEAD(&flow->encaps[out_index].list); INIT_LIST_HEAD(&flow->hairpin); INIT_LIST_HEAD(&flow->l3_to_l2_reformat); INIT_LIST_HEAD(&flow->attrs); refcount_set(&flow->refcnt, 1); init_completion(&flow->init_done); init_completion(&flow->del_hw_done); *__flow = flow; *__parse_attr = parse_attr; return 0; err_free: kfree(flow); kvfree(parse_attr); return err; } static void mlx5e_flow_attr_init(struct mlx5_flow_attr *attr, struct mlx5e_tc_flow_parse_attr *parse_attr, struct flow_cls_offload *f) { attr->parse_attr = parse_attr; attr->chain = f->common.chain_index; attr->prio = f->common.prio; } static void mlx5e_flow_esw_attr_init(struct mlx5_flow_attr *attr, struct mlx5e_priv *priv, struct mlx5e_tc_flow_parse_attr *parse_attr, struct flow_cls_offload *f, struct mlx5_eswitch_rep *in_rep, struct mlx5_core_dev *in_mdev) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr; mlx5e_flow_attr_init(attr, parse_attr, f); esw_attr->in_rep = in_rep; esw_attr->in_mdev = in_mdev; if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) == MLX5_COUNTER_SOURCE_ESWITCH) esw_attr->counter_dev = in_mdev; else esw_attr->counter_dev = priv->mdev; } static struct mlx5e_tc_flow * __mlx5e_add_fdb_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5_eswitch_rep *in_rep, struct mlx5_core_dev *in_mdev) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; struct netlink_ext_ack *extack = f->common.extack; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_flow *flow; int attr_size, err; flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH); attr_size = sizeof(struct mlx5_esw_flow_attr); err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags, &parse_attr, &flow); if (err) goto out; parse_attr->filter_dev = filter_dev; mlx5e_flow_esw_attr_init(flow->attr, priv, parse_attr, f, in_rep, in_mdev); err = parse_cls_flower(flow->priv, flow, &parse_attr->spec, f, filter_dev); if (err) goto err_free; /* actions validation depends on parsing the ct matches first */ err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f, &flow->attr->ct_attr, extack); if (err) goto err_free; /* always set IP version for indirect table handling */ flow->attr->ip_version = mlx5e_tc_get_ip_version(&parse_attr->spec, true); err = parse_tc_fdb_actions(priv, &rule->action, flow, extack); if (err) goto err_free; if (flow->attr->lag.count) { err = mlx5_lag_add_mpesw_rule(esw->dev); if (err) goto err_free; } err = mlx5e_tc_add_fdb_flow(priv, flow, extack); complete_all(&flow->init_done); if (err) { if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev))) goto err_lag; add_unready_flow(flow); } return flow; err_lag: if (flow->attr->lag.count) mlx5_lag_del_mpesw_rule(esw->dev); err_free: mlx5e_flow_put(priv, flow); out: return ERR_PTR(err); } static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f, struct mlx5e_tc_flow *flow, unsigned long flow_flags) { struct mlx5e_priv *priv = flow->priv, *peer_priv; struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw; struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr; 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 (attr->in_rep->vport == MLX5_VPORT_UPLINK) in_mdev = peer_priv->mdev; else in_mdev = priv->mdev; parse_attr = flow->attr->parse_attr; peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags, parse_attr->filter_dev, attr->in_rep, in_mdev); if (IS_ERR(peer_flow)) { err = PTR_ERR(peer_flow); goto out; } flow->peer_flow = peer_flow; flow_flag_set(flow, DUP); mutex_lock(&esw->offloads.peer_mutex); list_add_tail(&flow->peer, &esw->offloads.peer_flows); mutex_unlock(&esw->offloads.peer_mutex); out: mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); return err; } static int mlx5e_add_fdb_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5e_tc_flow **__flow) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch_rep *in_rep = rpriv->rep; struct mlx5_core_dev *in_mdev = priv->mdev; struct mlx5e_tc_flow *flow; int err; flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep, in_mdev); if (IS_ERR(flow)) return PTR_ERR(flow); if (is_peer_flow_needed(flow)) { err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags); if (err) { mlx5e_tc_del_fdb_flow(priv, flow); goto out; } } *__flow = flow; return 0; out: return err; } static int mlx5e_add_nic_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flow_flags, struct net_device *filter_dev, struct mlx5e_tc_flow **__flow) { struct flow_rule *rule = flow_cls_offload_flow_rule(f); struct netlink_ext_ack *extack = f->common.extack; struct mlx5e_tc_flow_parse_attr *parse_attr; struct mlx5e_tc_flow *flow; int attr_size, err; if (!MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) { if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common)) return -EOPNOTSUPP; } else if (!tc_can_offload_extack(priv->netdev, f->common.extack)) { return -EOPNOTSUPP; } flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC); attr_size = sizeof(struct mlx5_nic_flow_attr); err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags, &parse_attr, &flow); if (err) goto out; parse_attr->filter_dev = filter_dev; mlx5e_flow_attr_init(flow->attr, parse_attr, f); err = parse_cls_flower(flow->priv, flow, &parse_attr->spec, f, filter_dev); if (err) goto err_free; err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f, &flow->attr->ct_attr, extack); if (err) goto err_free; err = parse_tc_nic_actions(priv, &rule->action, flow, extack); if (err) goto err_free; err = mlx5e_tc_add_nic_flow(priv, flow, extack); if (err) goto err_free; flow_flag_set(flow, OFFLOADED); *__flow = flow; return 0; err_free: flow_flag_set(flow, FAILED); mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts); mlx5e_flow_put(priv, flow); out: return err; } static int mlx5e_tc_add_flow(struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags, struct net_device *filter_dev, struct mlx5e_tc_flow **flow) { struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; unsigned long flow_flags; int err; get_flags(flags, &flow_flags); if (!tc_can_offload_extack(priv->netdev, f->common.extack)) return -EOPNOTSUPP; if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS) err = mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, flow); else err = mlx5e_add_nic_flow(priv, f, flow_flags, filter_dev, flow); return err; } static bool is_flow_rule_duplicate_allowed(struct net_device *dev, struct mlx5e_rep_priv *rpriv) { /* Offloaded flow rule is allowed to duplicate on non-uplink representor * sharing tc block with other slaves of a lag device. Rpriv can be NULL if this * function is called from NIC mode. */ return netif_is_lag_port(dev) && rpriv && rpriv->rep->vport != MLX5_VPORT_UPLINK; } int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct netlink_ext_ack *extack = f->common.extack; struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5e_tc_flow *flow; int err = 0; if (!mlx5_esw_hold(priv->mdev)) return -EBUSY; mlx5_esw_get(priv->mdev); rcu_read_lock(); flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params); if (flow) { /* Same flow rule offloaded to non-uplink representor sharing tc block, * just return 0. */ if (is_flow_rule_duplicate_allowed(dev, rpriv) && flow->orig_dev != dev) goto rcu_unlock; NL_SET_ERR_MSG_MOD(extack, "flow cookie already exists, ignoring"); netdev_warn_once(priv->netdev, "flow cookie %lx already exists, ignoring\n", f->cookie); err = -EEXIST; goto rcu_unlock; } rcu_unlock: rcu_read_unlock(); if (flow) goto out; trace_mlx5e_configure_flower(f); err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow); if (err) goto out; /* Flow rule offloaded to non-uplink representor sharing tc block, * set the flow's owner dev. */ if (is_flow_rule_duplicate_allowed(dev, rpriv)) flow->orig_dev = dev; err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params); if (err) goto err_free; mlx5_esw_release(priv->mdev); return 0; err_free: mlx5e_flow_put(priv, flow); out: mlx5_esw_put(priv->mdev); mlx5_esw_release(priv->mdev); return err; } static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags) { bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS)); bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS)); return flow_flag_test(flow, INGRESS) == dir_ingress && flow_flag_test(flow, EGRESS) == dir_egress; } int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5e_tc_flow *flow; int err; rcu_read_lock(); flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params); if (!flow || !same_flow_direction(flow, flags)) { err = -EINVAL; goto errout; } /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag * set. */ if (flow_flag_test_and_set(flow, DELETED)) { err = -EINVAL; goto errout; } rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params); rcu_read_unlock(); trace_mlx5e_delete_flower(f); mlx5e_flow_put(priv, flow); mlx5_esw_put(priv->mdev); return 0; errout: rcu_read_unlock(); return err; } int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv, struct flow_cls_offload *f, unsigned long flags) { struct mlx5_devcom *devcom = priv->mdev->priv.devcom; struct rhashtable *tc_ht = get_tc_ht(priv, flags); struct mlx5_eswitch *peer_esw; struct mlx5e_tc_flow *flow; struct mlx5_fc *counter; u64 lastuse = 0; u64 packets = 0; u64 bytes = 0; int err = 0; rcu_read_lock(); flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params)); rcu_read_unlock(); if (IS_ERR(flow)) return PTR_ERR(flow); if (!same_flow_direction(flow, flags)) { err = -EINVAL; goto errout; } if (mlx5e_is_offloaded_flow(flow) || flow_flag_test(flow, CT)) { counter = mlx5e_tc_get_counter(flow); if (!counter) goto errout; mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); } /* Under multipath it's possible for one rule to be currently * un-offloaded while the other rule is offloaded. */ peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); if (!peer_esw) goto out; if (flow_flag_test(flow, DUP) && flow_flag_test(flow->peer_flow, OFFLOADED)) { u64 bytes2; u64 packets2; u64 lastuse2; counter = mlx5e_tc_get_counter(flow->peer_flow); if (!counter) goto no_peer_counter; mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2); bytes += bytes2; packets += packets2; lastuse = max_t(u64, lastuse, lastuse2); } no_peer_counter: mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); out: flow_stats_update(&f->stats, bytes, packets, 0, lastuse, FLOW_ACTION_HW_STATS_DELAYED); trace_mlx5e_stats_flower(f); errout: mlx5e_flow_put(priv, flow); return err; } static int apply_police_params(struct mlx5e_priv *priv, u64 rate, struct netlink_ext_ack *extack) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct mlx5_eswitch *esw; u32 rate_mbps = 0; u16 vport_num; int err; vport_num = rpriv->rep->vport; if (vport_num >= MLX5_VPORT_ECPF) { NL_SET_ERR_MSG_MOD(extack, "Ingress rate limit is supported only for Eswitch ports connected to VFs"); return -EOPNOTSUPP; } esw = priv->mdev->priv.eswitch; /* rate is given in bytes/sec. * First convert to bits/sec and then round to the nearest mbit/secs. * mbit means million bits. * Moreover, if rate is non zero we choose to configure to a minimum of * 1 mbit/sec. */ if (rate) { rate = (rate * BITS_PER_BYTE) + 500000; do_div(rate, 1000000); rate_mbps = max_t(u32, rate, 1); } err = mlx5_esw_qos_modify_vport_rate(esw, vport_num, rate_mbps); if (err) NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware"); return err; } int mlx5e_policer_validate(const struct flow_action *action, const struct flow_action_entry *act, struct netlink_ext_ack *extack) { if (act->police.exceed.act_id != FLOW_ACTION_DROP) { NL_SET_ERR_MSG_MOD(extack, "Offload not supported when exceed action is not drop"); return -EOPNOTSUPP; } if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT && !flow_action_is_last_entry(action, act)) { NL_SET_ERR_MSG_MOD(extack, "Offload not supported when conform action is ok, but action is not last"); return -EOPNOTSUPP; } if (act->police.peakrate_bytes_ps || act->police.avrate || act->police.overhead) { NL_SET_ERR_MSG_MOD(extack, "Offload not supported when peakrate/avrate/overhead is configured"); return -EOPNOTSUPP; } return 0; } static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv, struct flow_action *flow_action, struct netlink_ext_ack *extack) { struct mlx5e_rep_priv *rpriv = priv->ppriv; const struct flow_action_entry *act; int err; int i; if (!flow_action_has_entries(flow_action)) { NL_SET_ERR_MSG_MOD(extack, "matchall called with no action"); return -EINVAL; } if (!flow_offload_has_one_action(flow_action)) { NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action"); return -EOPNOTSUPP; } if (!flow_action_basic_hw_stats_check(flow_action, extack)) { NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported"); return -EOPNOTSUPP; } flow_action_for_each(i, act, flow_action) { switch (act->id) { case FLOW_ACTION_POLICE: if (act->police.notexceed.act_id != FLOW_ACTION_CONTINUE) { NL_SET_ERR_MSG_MOD(extack, "Offload not supported when conform action is not continue"); return -EOPNOTSUPP; } err = mlx5e_policer_validate(flow_action, act, extack); if (err) return err; err = apply_police_params(priv, act->police.rate_bytes_ps, extack); if (err) return err; rpriv->prev_vf_vport_stats = priv->stats.vf_vport; break; default: NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall"); return -EOPNOTSUPP; } } return 0; } int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct netlink_ext_ack *extack = ma->common.extack; if (ma->common.prio != 1) { NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported"); return -EINVAL; } return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack); } int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct netlink_ext_ack *extack = ma->common.extack; return apply_police_params(priv, 0, extack); } void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv, struct tc_cls_matchall_offload *ma) { struct mlx5e_rep_priv *rpriv = priv->ppriv; struct rtnl_link_stats64 cur_stats; u64 dbytes; u64 dpkts; cur_stats = priv->stats.vf_vport; dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets; dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes; rpriv->prev_vf_vport_stats = cur_stats; flow_stats_update(&ma->stats, dbytes, dpkts, 0, jiffies, FLOW_ACTION_HW_STATS_DELAYED); } static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_core_dev *peer_mdev = peer_priv->mdev; struct mlx5e_hairpin_entry *hpe, *tmp; LIST_HEAD(init_wait_list); u16 peer_vhca_id; int bkt; if (!mlx5e_same_hw_devs(priv, peer_priv)) return; peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id); mutex_lock(&tc->hairpin_tbl_lock); hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist) if (refcount_inc_not_zero(&hpe->refcnt)) list_add(&hpe->dead_peer_wait_list, &init_wait_list); mutex_unlock(&tc->hairpin_tbl_lock); list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) { wait_for_completion(&hpe->res_ready); if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id) mlx5_core_hairpin_clear_dead_peer(hpe->hp->pair); mlx5e_hairpin_put(priv, hpe); } } static int mlx5e_tc_netdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *ndev = netdev_notifier_info_to_dev(ptr); struct mlx5e_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); priv = tc->priv; 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; } static int mlx5e_tc_nic_get_ft_size(struct mlx5_core_dev *dev) { 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))); return tc_tbl_size; } static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_flow_table **ft = &tc->miss_t; struct mlx5_flow_table_attr ft_attr = {}; struct mlx5_flow_namespace *ns; int err = 0; ft_attr.max_fte = 1; ft_attr.autogroup.max_num_groups = 1; ft_attr.level = MLX5E_TC_MISS_LEVEL; ft_attr.prio = 0; ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL); *ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr); if (IS_ERR(*ft)) { err = PTR_ERR(*ft); netdev_err(priv->netdev, "failed to create tc nic miss table err=%d\n", err); } return err; } static void mlx5e_tc_nic_destroy_miss_table(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); mlx5_destroy_flow_table(tc->miss_t); } int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs); struct mlx5_core_dev *dev = priv->mdev; struct mapping_ctx *chains_mapping; struct mlx5_chains_attr attr = {}; u64 mapping_id; int err; mlx5e_mod_hdr_tbl_init(&tc->mod_hdr); mutex_init(&tc->t_lock); mutex_init(&tc->hairpin_tbl_lock); hash_init(tc->hairpin_tbl); tc->priv = priv; err = rhashtable_init(&tc->ht, &tc_ht_params); if (err) return err; lockdep_set_class(&tc->ht.mutex, &tc_ht_lock_key); mapping_id = mlx5_query_nic_system_image_guid(dev); chains_mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_CHAIN, sizeof(struct mlx5_mapped_obj), MLX5E_TC_TABLE_CHAIN_TAG_MASK, true); if (IS_ERR(chains_mapping)) { err = PTR_ERR(chains_mapping); goto err_mapping; } tc->mapping = chains_mapping; err = mlx5e_tc_nic_create_miss_table(priv); if (err) goto err_chains; if (MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED | MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED; attr.ns = MLX5_FLOW_NAMESPACE_KERNEL; attr.max_ft_sz = mlx5e_tc_nic_get_ft_size(dev); attr.max_grp_num = MLX5E_TC_TABLE_NUM_GROUPS; attr.default_ft = tc->miss_t; attr.mapping = chains_mapping; tc->chains = mlx5_chains_create(dev, &attr); if (IS_ERR(tc->chains)) { err = PTR_ERR(tc->chains); goto err_miss; } tc->post_act = mlx5e_tc_post_act_init(priv, tc->chains, MLX5_FLOW_NAMESPACE_KERNEL); tc->ct = mlx5_tc_ct_init(priv, tc->chains, &tc->mod_hdr, MLX5_FLOW_NAMESPACE_KERNEL, tc->post_act); tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event; err = register_netdevice_notifier_dev_net(priv->netdev, &tc->netdevice_nb, &tc->netdevice_nn); if (err) { tc->netdevice_nb.notifier_call = NULL; mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n"); goto err_reg; } return 0; err_reg: mlx5_tc_ct_clean(tc->ct); mlx5e_tc_post_act_destroy(tc->post_act); mlx5_chains_destroy(tc->chains); err_miss: mlx5e_tc_nic_destroy_miss_table(priv); err_chains: mapping_destroy(chains_mapping); err_mapping: rhashtable_destroy(&tc->ht); 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 = mlx5e_fs_get_tc(priv->fs); if (tc->netdevice_nb.notifier_call) unregister_netdevice_notifier_dev_net(priv->netdev, &tc->netdevice_nb, &tc->netdevice_nn); mlx5e_mod_hdr_tbl_destroy(&tc->mod_hdr); mutex_destroy(&tc->hairpin_tbl_lock); rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL); if (!IS_ERR_OR_NULL(tc->t)) { mlx5_chains_put_table(tc->chains, 0, 1, MLX5E_TC_FT_LEVEL); tc->t = NULL; } mutex_destroy(&tc->t_lock); mlx5_tc_ct_clean(tc->ct); mlx5e_tc_post_act_destroy(tc->post_act); mapping_destroy(tc->mapping); mlx5_chains_destroy(tc->chains); mlx5e_tc_nic_destroy_miss_table(priv); } int mlx5e_tc_ht_init(struct rhashtable *tc_ht) { int err; err = rhashtable_init(tc_ht, &tc_ht_params); if (err) return err; lockdep_set_class(&tc_ht->mutex, &tc_ht_lock_key); return 0; } void mlx5e_tc_ht_cleanup(struct rhashtable *tc_ht) { rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL); } int mlx5e_tc_esw_init(struct mlx5_rep_uplink_priv *uplink_priv) { const size_t sz_enc_opts = sizeof(struct tunnel_match_enc_opts); struct mlx5e_rep_priv *rpriv; struct mapping_ctx *mapping; struct mlx5_eswitch *esw; struct mlx5e_priv *priv; u64 mapping_id; int err = 0; rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv); priv = netdev_priv(rpriv->netdev); esw = priv->mdev->priv.eswitch; uplink_priv->post_act = mlx5e_tc_post_act_init(priv, esw_chains(esw), MLX5_FLOW_NAMESPACE_FDB); uplink_priv->ct_priv = mlx5_tc_ct_init(netdev_priv(priv->netdev), esw_chains(esw), &esw->offloads.mod_hdr, MLX5_FLOW_NAMESPACE_FDB, uplink_priv->post_act); uplink_priv->int_port_priv = mlx5e_tc_int_port_init(netdev_priv(priv->netdev)); uplink_priv->tc_psample = mlx5e_tc_sample_init(esw, uplink_priv->post_act); mapping_id = mlx5_query_nic_system_image_guid(esw->dev); mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL, sizeof(struct tunnel_match_key), TUNNEL_INFO_BITS_MASK, true); if (IS_ERR(mapping)) { err = PTR_ERR(mapping); goto err_tun_mapping; } uplink_priv->tunnel_mapping = mapping; /* Two last values are reserved for stack devices slow path table mark * and bridge ingress push mark. */ mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL_ENC_OPTS, sz_enc_opts, ENC_OPTS_BITS_MASK - 2, true); if (IS_ERR(mapping)) { err = PTR_ERR(mapping); goto err_enc_opts_mapping; } uplink_priv->tunnel_enc_opts_mapping = mapping; uplink_priv->encap = mlx5e_tc_tun_init(priv); if (IS_ERR(uplink_priv->encap)) { err = PTR_ERR(uplink_priv->encap); goto err_register_fib_notifier; } return 0; err_register_fib_notifier: mapping_destroy(uplink_priv->tunnel_enc_opts_mapping); err_enc_opts_mapping: mapping_destroy(uplink_priv->tunnel_mapping); err_tun_mapping: mlx5e_tc_sample_cleanup(uplink_priv->tc_psample); mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv); mlx5_tc_ct_clean(uplink_priv->ct_priv); netdev_warn(priv->netdev, "Failed to initialize tc (eswitch), err: %d", err); mlx5e_tc_post_act_destroy(uplink_priv->post_act); return err; } void mlx5e_tc_esw_cleanup(struct mlx5_rep_uplink_priv *uplink_priv) { mlx5e_tc_tun_cleanup(uplink_priv->encap); mapping_destroy(uplink_priv->tunnel_enc_opts_mapping); mapping_destroy(uplink_priv->tunnel_mapping); mlx5e_tc_sample_cleanup(uplink_priv->tc_psample); mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv); mlx5_tc_ct_clean(uplink_priv->ct_priv); mlx5e_flow_meters_cleanup(uplink_priv->flow_meters); mlx5e_tc_post_act_destroy(uplink_priv->post_act); } int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags) { struct rhashtable *tc_ht = get_tc_ht(priv, flags); return atomic_read(&tc_ht->nelems); } void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw) { struct mlx5e_tc_flow *flow, *tmp; list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer) __mlx5e_tc_del_fdb_peer_flow(flow); } void mlx5e_tc_reoffload_flows_work(struct work_struct *work) { struct mlx5_rep_uplink_priv *rpriv = container_of(work, struct mlx5_rep_uplink_priv, reoffload_flows_work); struct mlx5e_tc_flow *flow, *tmp; mutex_lock(&rpriv->unready_flows_lock); list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) { if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL)) unready_flow_del(flow); } mutex_unlock(&rpriv->unready_flows_lock); } static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv, struct flow_cls_offload *cls_flower, unsigned long flags) { switch (cls_flower->command) { case FLOW_CLS_REPLACE: return mlx5e_configure_flower(priv->netdev, priv, cls_flower, flags); case FLOW_CLS_DESTROY: return mlx5e_delete_flower(priv->netdev, priv, cls_flower, flags); case FLOW_CLS_STATS: return mlx5e_stats_flower(priv->netdev, priv, cls_flower, flags); default: return -EOPNOTSUPP; } } int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv) { unsigned long flags = MLX5_TC_FLAG(INGRESS); struct mlx5e_priv *priv = cb_priv; if (!priv->netdev || !netif_device_present(priv->netdev)) return -EOPNOTSUPP; if (mlx5e_is_uplink_rep(priv)) flags |= MLX5_TC_FLAG(ESW_OFFLOAD); else flags |= MLX5_TC_FLAG(NIC_OFFLOAD); switch (type) { case TC_SETUP_CLSFLOWER: return mlx5e_setup_tc_cls_flower(priv, type_data, flags); default: return -EOPNOTSUPP; } } bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe, struct sk_buff *skb) { #if IS_ENABLED(CONFIG_NET_TC_SKB_EXT) u32 chain = 0, chain_tag, reg_b, zone_restore_id; struct mlx5e_priv *priv = netdev_priv(skb->dev); struct mlx5_mapped_obj mapped_obj; struct tc_skb_ext *tc_skb_ext; struct mlx5e_tc_table *tc; int err; reg_b = be32_to_cpu(cqe->ft_metadata); tc = mlx5e_fs_get_tc(priv->fs); chain_tag = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK; err = mapping_find(tc->mapping, chain_tag, &mapped_obj); if (err) { netdev_dbg(priv->netdev, "Couldn't find chain for chain tag: %d, err: %d\n", chain_tag, err); return false; } if (mapped_obj.type == MLX5_MAPPED_OBJ_CHAIN) { chain = mapped_obj.chain; tc_skb_ext = tc_skb_ext_alloc(skb); if (WARN_ON(!tc_skb_ext)) return false; tc_skb_ext->chain = chain; zone_restore_id = (reg_b >> MLX5_REG_MAPPING_MOFFSET(NIC_ZONE_RESTORE_TO_REG)) & ESW_ZONE_ID_MASK; if (!mlx5e_tc_ct_restore_flow(tc->ct, skb, zone_restore_id)) return false; } else { netdev_dbg(priv->netdev, "Invalid mapped object type: %d\n", mapped_obj.type); return false; } #endif /* CONFIG_NET_TC_SKB_EXT */ return true; }
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