| /* |
| * 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 <net/dst_metadata.h> |
| #include "devlink.h" |
| #include "en.h" |
| #include "en/tc/post_act.h" |
| #include "en/tc/act_stats.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 dentry *dfs_root; |
| |
| /* tc action stats */ |
| struct mlx5e_tc_act_stats_handle *action_stats_handle; |
| }; |
| |
| struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = { |
| [MAPPED_OBJ_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_MAPPED_OBJ_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_jump_state { |
| u32 jump_count; |
| bool jump_target; |
| struct mlx5_flow_attr *jumping_attr; |
| |
| enum flow_action_id last_id; |
| u32 last_index; |
| }; |
| |
| 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 struct lock_class_key tc_ht_wq_key; |
| |
| static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow); |
| static void free_flow_post_acts(struct mlx5e_tc_flow *flow); |
| static void mlx5_free_flow_attr_actions(struct mlx5e_tc_flow *flow, |
| struct mlx5_flow_attr *attr); |
| |
| 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; |
| } |
| |
| static struct mlx5e_tc_act_stats_handle * |
| get_act_stats_handle(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->action_stats_handle; |
| } |
| |
| return tc->action_stats_handle; |
| } |
| |
| 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)) || |
| attr->flags & MLX5_ATTR_FLAG_MTU); |
| } |
| |
| 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; |
| enum mlx5e_post_meter_type type; |
| |
| if (IS_ERR(post_act)) |
| return PTR_ERR(post_act); |
| |
| 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); |
| type = meter->params.mtu ? MLX5E_POST_METER_MTU : MLX5E_POST_METER_RATE; |
| post_meter = mlx5e_post_meter_init(priv, ns_type, post_act, |
| type, |
| meter->act_counter, meter->drop_counter, |
| attr->branch_true, attr->branch_false); |
| 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_eswitch *esw, struct mlx5_flow_attr *attr) |
| { |
| mlx5e_post_meter_cleanup(esw, 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 (!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 (!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(esw, 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; |
| u8 log_num_packets; |
| 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 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; |
| } |
| |
| 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; |
| } |
| |
| int mlx5e_tc_attach_mod_hdr(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow, |
| struct mlx5_flow_attr *attr) |
| { |
| struct mlx5e_mod_hdr_handle *mh; |
| |
| mh = mlx5e_mod_hdr_attach(priv->mdev, get_mod_hdr_table(priv, flow), |
| mlx5e_get_flow_namespace(flow), |
| &attr->parse_attr->mod_hdr_acts); |
| if (IS_ERR(mh)) |
| return PTR_ERR(mh); |
| |
| WARN_ON(attr->modify_hdr); |
| attr->modify_hdr = mlx5e_mod_hdr_get(mh); |
| attr->mh = mh; |
| |
| return 0; |
| } |
| |
| void mlx5e_tc_detach_mod_hdr(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow, |
| struct mlx5_flow_attr *attr) |
| { |
| /* flow wasn't fully initialized */ |
| if (!attr->mh) |
| return; |
| |
| mlx5e_mod_hdr_detach(priv->mdev, get_mod_hdr_table(priv, flow), |
| attr->mh); |
| attr->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; |
| |
| err = mlx5e_rss_params_indir_init(&indir, mdev, |
| mlx5e_rqt_size(mdev, hp->num_channels), |
| mlx5e_rqt_size(mdev, hp->num_channels)); |
| if (err) |
| return err; |
| |
| 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); |
| |
| mlx5e_rss_params_indir_cleanup(&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; |
| hp->log_num_packets = params->log_num_packets; |
| |
| 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 debugfs_hairpin_num_active_get(void *data, u64 *val) |
| { |
| struct mlx5e_tc_table *tc = data; |
| struct mlx5e_hairpin_entry *hpe; |
| u32 cnt = 0; |
| u32 bkt; |
| |
| mutex_lock(&tc->hairpin_tbl_lock); |
| hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist) |
| cnt++; |
| mutex_unlock(&tc->hairpin_tbl_lock); |
| |
| *val = cnt; |
| |
| return 0; |
| } |
| DEFINE_DEBUGFS_ATTRIBUTE(fops_hairpin_num_active, |
| debugfs_hairpin_num_active_get, NULL, "%llu\n"); |
| |
| static int debugfs_hairpin_table_dump_show(struct seq_file *file, void *priv) |
| |
| { |
| struct mlx5e_tc_table *tc = file->private; |
| struct mlx5e_hairpin_entry *hpe; |
| u32 bkt; |
| |
| mutex_lock(&tc->hairpin_tbl_lock); |
| hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist) |
| seq_printf(file, |
| "Hairpin peer_vhca_id %u prio %u refcnt %u num_channels %u num_packets %lu\n", |
| hpe->peer_vhca_id, hpe->prio, |
| refcount_read(&hpe->refcnt), hpe->hp->num_channels, |
| BIT(hpe->hp->log_num_packets)); |
| mutex_unlock(&tc->hairpin_tbl_lock); |
| |
| return 0; |
| } |
| DEFINE_SHOW_ATTRIBUTE(debugfs_hairpin_table_dump); |
| |
| static void mlx5e_tc_debugfs_init(struct mlx5e_tc_table *tc, |
| struct dentry *dfs_root) |
| { |
| if (IS_ERR_OR_NULL(dfs_root)) |
| return; |
| |
| tc->dfs_root = debugfs_create_dir("tc", dfs_root); |
| |
| debugfs_create_file("hairpin_num_active", 0444, tc->dfs_root, tc, |
| &fops_hairpin_num_active); |
| debugfs_create_file("hairpin_table_dump", 0444, tc->dfs_root, tc, |
| &debugfs_hairpin_table_dump_fops); |
| } |
| |
| 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); |
| struct devlink *devlink = priv_to_devlink(priv->mdev); |
| int peer_ifindex = parse_attr->mirred_ifindex[0]; |
| union devlink_param_value val = {}; |
| struct mlx5_hairpin_params params; |
| struct mlx5_core_dev *peer_mdev; |
| struct mlx5e_hairpin_entry *hpe; |
| struct mlx5e_hairpin *hp; |
| 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); |
| |
| err = devl_param_driverinit_value_get( |
| devlink, MLX5_DEVLINK_PARAM_ID_HAIRPIN_QUEUE_SIZE, &val); |
| if (err) { |
| err = -ENOMEM; |
| goto out_err; |
| } |
| |
| params.log_num_packets = ilog2(val.vu32); |
| params.log_data_size = |
| clamp_t(u32, |
| params.log_num_packets + |
| MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev), |
| MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz), |
| MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz)); |
| |
| params.q_counter = priv->q_counter; |
| err = devl_param_driverinit_value_get( |
| devlink, MLX5_DEVLINK_PARAM_ID_HAIRPIN_NUM_QUEUES, &val); |
| if (err) { |
| err = -ENOMEM; |
| goto out_err; |
| } |
| |
| params.num_channels = val.vu32; |
| |
| 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_tc_attach_mod_hdr(priv, flow, attr); |
| if (err) |
| return err; |
| } |
| |
| 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 (!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_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts); |
| mlx5e_tc_detach_mod_hdr(priv, flow, attr); |
| } |
| |
| 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); |
| mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr); |
| |
| 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, |
| MAPPED_OBJ_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->attr->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 mlx5e_mod_hdr_handle *slow_mh = flow->attr->slow_mh; |
| 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 (slow_mh) { |
| slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR; |
| slow_attr->modify_hdr = mlx5e_mod_hdr_get(slow_mh); |
| } |
| mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr); |
| if (slow_mh) { |
| mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), slow_mh); |
| mlx5_chains_put_chain_mapping(esw_chains(esw), flow->chain_mapping); |
| flow->chain_mapping = 0; |
| flow->attr->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); |
| if (flow_flag_test(flow, NOT_READY)) |
| 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_core_dev *route_mdev; |
| struct mlx5_devcom_comp_dev *pos; |
| 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); |
| err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); |
| if (!err) |
| return err; |
| |
| if (!mlx5_lag_is_active(out_priv->mdev)) |
| return err; |
| |
| rcu_read_lock(); |
| err = -ENODEV; |
| mlx5_devcom_for_each_peer_entry_rcu(esw->devcom, esw, pos) { |
| err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); |
| if (!err) |
| break; |
| } |
| rcu_read_unlock(); |
| |
| return err; |
| } |
| |
| static int |
| verify_attr_actions(u32 actions, struct netlink_ext_ack *extack) |
| { |
| 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 -EOPNOTSUPP; |
| } |
| |
| 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 -EOPNOTSUPP; |
| } |
| |
| 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 -EOPNOTSUPP; |
| } |
| |
| return 0; |
| } |
| |
| static bool |
| has_encap_dests(struct mlx5_flow_attr *attr) |
| { |
| struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr; |
| int out_index; |
| |
| for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) |
| if (esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP) |
| return true; |
| |
| return false; |
| } |
| |
| static int |
| post_process_attr(struct mlx5e_tc_flow *flow, |
| struct mlx5_flow_attr *attr, |
| struct netlink_ext_ack *extack) |
| { |
| bool vf_tun; |
| int err = 0; |
| |
| err = verify_attr_actions(attr->action, extack); |
| if (err) |
| goto err_out; |
| |
| if (mlx5e_is_eswitch_flow(flow) && has_encap_dests(attr)) { |
| err = mlx5e_tc_tun_encap_dests_set(flow->priv, flow, attr, extack, &vf_tun); |
| if (err) |
| goto err_out; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { |
| err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr); |
| if (err) |
| goto err_out; |
| } |
| |
| if (attr->branch_true && |
| attr->branch_true->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { |
| err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr->branch_true); |
| if (err) |
| goto err_out; |
| } |
| |
| if (attr->branch_false && |
| attr->branch_false->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) { |
| err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr->branch_false); |
| if (err) |
| goto err_out; |
| } |
| |
| if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { |
| err = alloc_flow_attr_counter(get_flow_counter_dev(flow), attr); |
| if (err) |
| goto err_out; |
| } |
| |
| err_out: |
| return err; |
| } |
| |
| 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; |
| 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 = post_process_attr(flow, attr, extack); |
| if (err) |
| goto err_out; |
| |
| err = mlx5e_tc_act_stats_add_flow(get_act_stats_handle(priv), flow); |
| 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 free_branch_attr(struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr) |
| { |
| if (!attr) |
| return; |
| |
| mlx5_free_flow_attr_actions(flow, attr); |
| kvfree(attr->parse_attr); |
| kfree(attr); |
| } |
| |
| 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; |
| |
| mlx5e_put_flow_tunnel_id(flow); |
| |
| 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); |
| |
| if (flow->decap_route) |
| mlx5e_detach_decap_route(priv, flow); |
| |
| mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr); |
| |
| if (flow_flag_test(flow, L3_TO_L2_DECAP)) |
| mlx5e_detach_decap(priv, flow); |
| |
| mlx5e_tc_act_stats_del_flow(get_act_stats_handle(priv), flow); |
| |
| free_flow_post_acts(flow); |
| mlx5_free_flow_attr_actions(flow, attr); |
| |
| 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, |
| int peer_index) |
| { |
| struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch; |
| struct mlx5e_tc_flow *peer_flow; |
| struct mlx5e_tc_flow *tmp; |
| |
| if (!flow_flag_test(flow, ESWITCH) || |
| !flow_flag_test(flow, DUP)) |
| return; |
| |
| mutex_lock(&esw->offloads.peer_mutex); |
| list_del(&flow->peer[peer_index]); |
| mutex_unlock(&esw->offloads.peer_mutex); |
| |
| list_for_each_entry_safe(peer_flow, tmp, &flow->peer_flows, peer_flows) { |
| if (peer_index != mlx5_get_dev_index(peer_flow->priv->mdev)) |
| continue; |
| |
| list_del(&peer_flow->peer_flows); |
| if (refcount_dec_and_test(&peer_flow->refcnt)) { |
| mlx5e_tc_del_fdb_flow(peer_flow->priv, peer_flow); |
| kfree(peer_flow); |
| } |
| } |
| |
| if (list_empty(&flow->peer_flows)) |
| flow_flag_clear(flow, DUP); |
| } |
| |
| static void mlx5e_tc_del_fdb_peers_flow(struct mlx5e_tc_flow *flow) |
| { |
| int i; |
| |
| for (i = 0; i < MLX5_MAX_PORTS; i++) { |
| if (i == mlx5_get_dev_index(flow->priv->mdev)) |
| continue; |
| mlx5e_tc_del_fdb_peer_flow(flow, i); |
| } |
| } |
| |
| static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, |
| struct mlx5e_tc_flow *flow) |
| { |
| if (mlx5e_is_eswitch_flow(flow)) { |
| struct mlx5_devcom_comp_dev *devcom = flow->priv->mdev->priv.eswitch->devcom; |
| |
| if (!mlx5_devcom_for_each_peer_begin(devcom)) { |
| mlx5e_tc_del_fdb_flow(priv, flow); |
| return; |
| } |
| |
| mlx5e_tc_del_fdb_peers_flow(flow); |
| mlx5_devcom_for_each_peer_end(devcom); |
| 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) { |
| 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 tunnel tmp spec"); |
| netdev_warn(priv->netdev, "Failed to allocate memory for tunnel 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->l2_miss) { |
| NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on \"l2_miss\""); |
| return -EOPNOTSUPP; |
| } |
| |
| 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_ULL(FLOW_DISSECTOR_KEY_META) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_CVLAN) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_PORTS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_CONTROL) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_TCP) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_IP) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_CT) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_IP) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ENC_OPTS) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_ICMP) | |
| BIT_ULL(FLOW_DISSECTOR_KEY_MPLS))) { |
| NL_SET_ERR_MSG_MOD(extack, "Unsupported key"); |
| netdev_dbg(priv->netdev, "Unsupported key used: 0x%llx\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, 0x0fc0, 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 u32 mask_field_get(void *mask, struct mlx5_fields *f) |
| { |
| switch (f->field_bsize) { |
| case 32: |
| return be32_to_cpu(*(__be32 *)mask) & f->field_mask; |
| case 16: |
| return be16_to_cpu(*(__be16 *)mask) & (u16)f->field_mask; |
| default: |
| return *(u8 *)mask & (u8)f->field_mask; |
| } |
| } |
| |
| static void mask_field_clear(void *mask, struct mlx5_fields *f) |
| { |
| switch (f->field_bsize) { |
| case 32: |
| *(__be32 *)mask &= ~cpu_to_be32(f->field_mask); |
| break; |
| case 16: |
| *(__be16 *)mask &= ~cpu_to_be16((u16)f->field_mask); |
| break; |
| default: |
| *(u8 *)mask &= ~(u8)f->field_mask; |
| break; |
| } |
| } |
| |
| 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; |
| struct mlx5e_tc_mod_hdr_acts *mod_acts; |
| void *s_masks_p, *a_masks_p; |
| int i, first, last, next_z; |
| struct mlx5_fields *f; |
| unsigned long mask; |
| u32 s_mask, a_mask; |
| 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[TCA_PEDIT_KEY_EX_CMD_SET].masks; |
| add_masks = &hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].masks; |
| set_vals = &hdrs[TCA_PEDIT_KEY_EX_CMD_SET].vals; |
| add_vals = &hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].vals; |
| |
| for (i = 0; i < ARRAY_SIZE(fields); i++) { |
| bool skip; |
| |
| f = &fields[i]; |
| s_masks_p = (void *)set_masks + f->offset; |
| a_masks_p = (void *)add_masks + f->offset; |
| |
| s_mask = mask_field_get(s_masks_p, f); |
| a_mask = mask_field_get(a_masks_p, f); |
| |
| 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 */ |
| mask_field_clear(s_masks_p, f); |
| } else { |
| cmd = MLX5_ACTION_TYPE_ADD; |
| mask = a_mask; |
| vals_p = (void *)add_vals + f->offset; |
| /* add 0 is no change */ |
| if (!mask_field_get(vals_p, f)) |
| skip = true; |
| /* clear to denote we consumed this field */ |
| mask_field_clear(a_masks_p, f); |
| } |
| if (skip) |
| continue; |
| |
| 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) { |
| unsigned long field_mask = f->field_mask; |
| int start; |
| |
| /* 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_flow_action_modify_ip_header(struct flow_action *flow_action) |
| { |
| const struct flow_action_entry *act; |
| u32 mask, offset; |
| u8 htype; |
| int i; |
| |
| /* For IPv4 & IPv6 header check 4 byte word, |
| * to determine that modified fields |
| * are NOT ttl & hop_limit only. |
| */ |
| flow_action_for_each(i, act, flow_action) { |
| if (act->id != FLOW_ACTION_MANGLE && |
| act->id != FLOW_ACTION_ADD) |
| continue; |
| |
| htype = act->mangle.htype; |
| offset = act->mangle.offset; |
| mask = ~act->mangle.mask; |
| |
| if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) { |
| struct ip_ttl_word *ttl_word = |
| (struct ip_ttl_word *)&mask; |
| |
| if (offset != offsetof(struct iphdr, ttl) || |
| ttl_word->protocol || |
| ttl_word->check) |
| return true; |
| } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) { |
| struct ipv6_hoplimit_word *hoplimit_word = |
| (struct ipv6_hoplimit_word *)&mask; |
| |
| if (offset != offsetof(struct ipv6hdr, payload_len) || |
| hoplimit_word->payload_len || |
| hoplimit_word->nexthdr) |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| static bool modify_header_match_supported(struct mlx5e_priv *priv, |
| struct mlx5_flow_spec *spec, |
| struct flow_action *flow_action, |
| u32 actions, |
| struct netlink_ext_ack *extack) |
| { |
| bool modify_ip_header; |
| void *headers_c; |
| void *headers_v; |
| u16 ethertype; |
| u8 ip_proto; |
| |
| 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 = is_flow_action_modify_ip_header(flow_action); |
| 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 *flow, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr; |
| |
| 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) |
| { |
| if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR && |
| !modify_header_match_supported(priv, &parse_attr->spec, flow_action, actions, |
| extack)) |
| return false; |
| |
| if (mlx5e_is_eswitch_flow(flow) && |
| !actions_match_supported_fdb(priv, 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->counter = NULL; |
| attr2->tc_act_cookies_count = 0; |
| attr2->flags = 0; |
| attr2->parse_attr = parse_attr; |
| attr2->dest_chain = 0; |
| attr2->dest_ft = NULL; |
| attr2->act_id_restore_rule = NULL; |
| memset(&attr2->ct_attr, 0, sizeof(attr2->ct_attr)); |
| |
| if (ns_type == MLX5_FLOW_NAMESPACE_FDB) { |
| attr2->esw_attr->out_count = 0; |
| attr2->esw_attr->split_count = 0; |
| } |
| |
| attr2->branch_true = NULL; |
| attr2->branch_false = NULL; |
| attr2->jumping_attr = NULL; |
| return attr2; |
| } |
| |
| 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_flow_attr *attr, *tmp; |
| |
| list_for_each_entry_safe(attr, tmp, &flow->attrs, list) { |
| if (list_is_last(&attr->list, &flow->attrs)) |
| break; |
| |
| mlx5_free_flow_attr_actions(flow, attr); |
| |
| 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; |
| 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; |
| } |
| |
| if (next_attr && !(attr->flags & MLX5_ATTR_FLAG_TERMINATING)) { |
| 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 = actions_prepare_mod_hdr_actions(flow->priv, flow, attr, extack); |
| if (err) |
| goto out_free; |
| |
| err = post_process_attr(flow, attr, extack); |
| 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; |
| |
| if (attr->jumping_attr) { |
| err = mlx5e_tc_act_set_next_post_act(flow, attr->jumping_attr, attr); |
| if (err) |
| goto out_free; |
| } |
| |
| 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 |
| set_branch_dest_ft(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr) |
| { |
| struct mlx5e_post_act *post_act = get_post_action(priv); |
| |
| if (IS_ERR(post_act)) |
| return PTR_ERR(post_act); |
| |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| attr->dest_ft = mlx5e_tc_post_act_get_ft(post_act); |
| |
| return 0; |
| } |
| |
| static int |
| alloc_branch_attr(struct mlx5e_tc_flow *flow, |
| struct mlx5e_tc_act_branch_ctrl *cond, |
| struct mlx5_flow_attr **cond_attr, |
| u32 *jump_count, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlx5_flow_attr *attr; |
| int err = 0; |
| |
| *cond_attr = mlx5e_clone_flow_attr_for_post_act(flow->attr, |
| mlx5e_get_flow_namespace(flow)); |
| if (!(*cond_attr)) |
| return -ENOMEM; |
| |
| attr = *cond_attr; |
| |
| switch (cond->act_id) { |
| case FLOW_ACTION_DROP: |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP; |
| break; |
| case FLOW_ACTION_ACCEPT: |
| case FLOW_ACTION_PIPE: |
| err = set_branch_dest_ft(flow->priv, attr); |
| if (err) |
| goto out_err; |
| break; |
| case FLOW_ACTION_JUMP: |
| if (*jump_count) { |
| NL_SET_ERR_MSG_MOD(extack, "Cannot offload flows with nested jumps"); |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| *jump_count = cond->extval; |
| err = set_branch_dest_ft(flow->priv, attr); |
| if (err) |
| goto out_err; |
| break; |
| default: |
| err = -EOPNOTSUPP; |
| goto out_err; |
| } |
| |
| return err; |
| out_err: |
| kfree(*cond_attr); |
| *cond_attr = NULL; |
| return err; |
| } |
| |
| static void |
| dec_jump_count(struct flow_action_entry *act, struct mlx5e_tc_act *tc_act, |
| struct mlx5_flow_attr *attr, struct mlx5e_priv *priv, |
| struct mlx5e_tc_jump_state *jump_state) |
| { |
| if (!jump_state->jump_count) |
| return; |
| |
| /* Single tc action can instantiate multiple offload actions (e.g. pedit) |
| * Jump only over a tc action |
| */ |
| if (act->id == jump_state->last_id && act->hw_index == jump_state->last_index) |
| return; |
| |
| jump_state->last_id = act->id; |
| jump_state->last_index = act->hw_index; |
| |
| /* nothing to do for intermediate actions */ |
| if (--jump_state->jump_count > 1) |
| return; |
| |
| if (jump_state->jump_count == 1) { /* last action in the jump action list */ |
| |
| /* create a new attribute after this action */ |
| jump_state->jump_target = true; |
| |
| if (tc_act->is_terminating_action) { /* the branch ends here */ |
| attr->flags |= MLX5_ATTR_FLAG_TERMINATING; |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| } else { /* the branch continues executing the rest of the actions */ |
| struct mlx5e_post_act *post_act; |
| |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| post_act = get_post_action(priv); |
| attr->dest_ft = mlx5e_tc_post_act_get_ft(post_act); |
| } |
| } else if (jump_state->jump_count == 0) { /* first attr after the jump action list */ |
| /* This is the post action for the jumping attribute (either red or green) |
| * Use the stored jumping_attr to set the post act id on the jumping attribute |
| */ |
| attr->jumping_attr = jump_state->jumping_attr; |
| } |
| } |
| |
| static int |
| parse_branch_ctrl(struct flow_action_entry *act, struct mlx5e_tc_act *tc_act, |
| struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr, |
| struct mlx5e_tc_jump_state *jump_state, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlx5e_tc_act_branch_ctrl cond_true, cond_false; |
| u32 jump_count = jump_state->jump_count; |
| int err; |
| |
| if (!tc_act->get_branch_ctrl) |
| return 0; |
| |
| tc_act->get_branch_ctrl(act, &cond_true, &cond_false); |
| |
| err = alloc_branch_attr(flow, &cond_true, |
| &attr->branch_true, &jump_count, extack); |
| if (err) |
| goto out_err; |
| |
| if (jump_count) |
| jump_state->jumping_attr = attr->branch_true; |
| |
| err = alloc_branch_attr(flow, &cond_false, |
| &attr->branch_false, &jump_count, extack); |
| if (err) |
| goto err_branch_false; |
| |
| if (jump_count && !jump_state->jumping_attr) |
| jump_state->jumping_attr = attr->branch_false; |
| |
| jump_state->jump_count = jump_count; |
| |
| /* branching action requires its own counter */ |
| attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| flow_flag_set(flow, USE_ACT_STATS); |
| |
| return 0; |
| |
| err_branch_false: |
| free_branch_attr(flow, attr->branch_true); |
| out_err: |
| 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 *flow = parse_state->flow; |
| struct mlx5e_tc_jump_state jump_state = {}; |
| struct mlx5_flow_attr *attr = flow->attr; |
| enum mlx5_flow_namespace_type ns_type; |
| struct mlx5e_priv *priv = flow->priv; |
| struct mlx5_flow_attr *prev_attr; |
| struct flow_action_entry *act; |
| struct mlx5e_tc_act *tc_act; |
| int err, i, i_split = 0; |
| bool is_missable; |
| |
| ns_type = mlx5e_get_flow_namespace(flow); |
| list_add(&attr->list, &flow->attrs); |
| |
| flow_action_for_each(i, act, flow_action) { |
| jump_state.jump_target = false; |
| is_missable = false; |
| prev_attr = attr; |
| |
| 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_post_acts; |
| } |
| |
| if (tc_act->can_offload && !tc_act->can_offload(parse_state, act, i, attr)) { |
| err = -EOPNOTSUPP; |
| goto out_free_post_acts; |
| } |
| |
| err = tc_act->parse_action(parse_state, act, priv, attr); |
| if (err) |
| goto out_free_post_acts; |
| |
| dec_jump_count(act, tc_act, attr, priv, &jump_state); |
| |
| err = parse_branch_ctrl(act, tc_act, flow, attr, &jump_state, extack); |
| if (err) |
| goto out_free_post_acts; |
| |
| parse_state->actions |= attr->action; |
| |
| /* Split attr for multi table act if not the last act. */ |
| if (jump_state.jump_target || |
| (tc_act->is_multi_table_act && |
| tc_act->is_multi_table_act(priv, act, attr) && |
| i < flow_action->num_entries - 1)) { |
| is_missable = tc_act->is_missable ? tc_act->is_missable(act) : false; |
| |
| err = mlx5e_tc_act_post_parse(parse_state, flow_action, i_split, i, attr, |
| ns_type); |
| if (err) |
| goto out_free_post_acts; |
| |
| attr = mlx5e_clone_flow_attr_for_post_act(flow->attr, ns_type); |
| if (!attr) { |
| err = -ENOMEM; |
| goto out_free_post_acts; |
| } |
| |
| i_split = i + 1; |
| parse_state->if_count = 0; |
| list_add(&attr->list, &flow->attrs); |
| } |
| |
| if (is_missable) { |
| /* Add counter to prev, and assign act to new (next) attr */ |
| prev_attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| flow_flag_set(flow, USE_ACT_STATS); |
| |
| attr->tc_act_cookies[attr->tc_act_cookies_count++] = act->cookie; |
| } else if (!tc_act->stats_action) { |
| prev_attr->tc_act_cookies[prev_attr->tc_act_cookies_count++] = act->cookie; |
| } |
| } |
| |
| err = mlx5e_tc_act_post_parse(parse_state, flow_action, i_split, i, 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_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; |
| |
| err = verify_attr_actions(attr->action, 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) |
| { |
| return same_hw_reps(priv, out_dev) && mlx5_lag_is_mpesw(priv->mdev); |
| } |
| |
| 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; |
| esw_attr->split_count = out_index; |
| |
| /* 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_comp_is_ready(esw_attr->in_mdev->priv.eswitch->devcom); |
| |
| 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; |
| |
| if (mlx5_lag_is_mpesw(esw_attr->in_mdev)) |
| 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 void |
| mlx5_free_flow_attr_actions(struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr) |
| { |
| struct mlx5_core_dev *counter_dev = get_flow_counter_dev(flow); |
| struct mlx5_esw_flow_attr *esw_attr; |
| |
| if (!attr) |
| return; |
| |
| if (attr->post_act_handle) |
| mlx5e_tc_post_act_del(get_post_action(flow->priv), attr->post_act_handle); |
| |
| mlx5e_tc_tun_encap_dests_unset(flow->priv, flow, attr); |
| |
| 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); |
| mlx5e_tc_detach_mod_hdr(flow->priv, flow, attr); |
| } |
| |
| if (mlx5e_is_eswitch_flow(flow)) { |
| esw_attr = attr->esw_attr; |
| |
| if (esw_attr->int_port) |
| mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(flow->priv), |
| esw_attr->int_port); |
| |
| if (esw_attr->dest_int_port) |
| mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(flow->priv), |
| esw_attr->dest_int_port); |
| } |
| |
| mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr); |
| |
| free_branch_attr(flow, attr->branch_true); |
| free_branch_attr(flow, attr->branch_false); |
| } |
| |
| static int |
| mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size, |
| struct flow_cls_offload *f, unsigned long flow_flags, |
| struct mlx5e_tc_flow_parse_attr **__parse_attr, |
| struct mlx5e_tc_flow **__flow) |
| { |
| struct mlx5e_tc_flow_parse_attr *parse_attr; |
| struct 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); |
| INIT_LIST_HEAD(&flow->peer_flows); |
| 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 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; |
| |
| err = parse_tc_fdb_actions(priv, &rule->action, flow, extack); |
| if (err) |
| goto err_free; |
| |
| err = mlx5e_tc_add_fdb_flow(priv, flow, extack); |
| complete_all(&flow->init_done); |
| if (err) { |
| if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev))) |
| goto err_free; |
| |
| add_unready_flow(flow); |
| } |
| |
| return flow; |
| |
| err_free: |
| mlx5e_flow_put(priv, flow); |
| out: |
| return ERR_PTR(err); |
| } |
| |
| static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f, |
| struct mlx5e_tc_flow *flow, |
| unsigned long flow_flags, |
| struct mlx5_eswitch *peer_esw) |
| { |
| struct mlx5e_priv *priv = flow->priv, *peer_priv; |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr; |
| struct mlx5e_tc_flow_parse_attr *parse_attr; |
| int i = mlx5_get_dev_index(peer_esw->dev); |
| struct mlx5e_rep_priv *peer_urpriv; |
| struct mlx5e_tc_flow *peer_flow; |
| struct mlx5_core_dev *in_mdev; |
| int err = 0; |
| |
| 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. |
| * In multiport eswitch it's a special case that we need to |
| * keep the original mdev. |
| */ |
| if (attr->in_rep->vport == MLX5_VPORT_UPLINK && !mlx5_lag_is_mpesw(priv->mdev)) |
| 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; |
| } |
| |
| list_add_tail(&peer_flow->peer_flows, &flow->peer_flows); |
| flow_flag_set(flow, DUP); |
| mutex_lock(&esw->offloads.peer_mutex); |
| list_add_tail(&flow->peer[i], &esw->offloads.peer_flows[i]); |
| mutex_unlock(&esw->offloads.peer_mutex); |
| |
| out: |
| 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 mlx5_devcom_comp_dev *devcom = priv->mdev->priv.eswitch->devcom, *pos; |
| struct mlx5e_rep_priv *rpriv = priv->ppriv; |
| struct mlx5_eswitch_rep *in_rep = rpriv->rep; |
| struct mlx5_core_dev *in_mdev = priv->mdev; |
| struct mlx5_eswitch *peer_esw; |
| 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)) { |
| *__flow = flow; |
| return 0; |
| } |
| |
| if (!mlx5_devcom_for_each_peer_begin(devcom)) { |
| err = -ENODEV; |
| goto clean_flow; |
| } |
| |
| mlx5_devcom_for_each_peer_entry(devcom, peer_esw, pos) { |
| err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags, peer_esw); |
| if (err) |
| goto peer_clean; |
| } |
| |
| mlx5_devcom_for_each_peer_end(devcom); |
| |
| *__flow = flow; |
| return 0; |
| |
| peer_clean: |
| mlx5e_tc_del_fdb_peers_flow(flow); |
| mlx5_devcom_for_each_peer_end(devcom); |
| clean_flow: |
| mlx5e_tc_del_fdb_flow(priv, flow); |
| 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; |
| } |
| |
| /* As IPsec and TC order is not aligned between software and hardware-offload, |
| * either IPsec offload or TC offload, not both, is allowed for a specific interface. |
| */ |
| static bool is_tc_ipsec_order_check_needed(struct net_device *filter, struct mlx5e_priv *priv) |
| { |
| if (!IS_ENABLED(CONFIG_MLX5_EN_IPSEC)) |
| return false; |
| |
| if (filter != priv->netdev) |
| return false; |
| |
| if (mlx5e_eswitch_vf_rep(priv->netdev)) |
| return false; |
| |
| return true; |
| } |
| |
| static int mlx5e_tc_block_ipsec_offload(struct net_device *filter, struct mlx5e_priv *priv) |
| { |
| struct mlx5_core_dev *mdev = priv->mdev; |
| |
| if (!is_tc_ipsec_order_check_needed(filter, priv)) |
| return 0; |
| |
| if (mdev->num_block_tc) |
| return -EBUSY; |
| |
| mdev->num_block_ipsec++; |
| |
| return 0; |
| } |
| |
| static void mlx5e_tc_unblock_ipsec_offload(struct net_device *filter, struct mlx5e_priv *priv) |
| { |
| if (!is_tc_ipsec_order_check_needed(filter, priv)) |
| return; |
| |
| priv->mdev->num_block_ipsec--; |
| } |
| |
| 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; |
| |
| err = mlx5e_tc_block_ipsec_offload(dev, priv); |
| if (err) |
| goto esw_release; |
| |
| 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: |
| mlx5e_tc_unblock_ipsec_offload(dev, priv); |
| mlx5_esw_put(priv->mdev); |
| esw_release: |
| 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); |
| |
| mlx5e_tc_unblock_ipsec_offload(dev, priv); |
| mlx5_esw_put(priv->mdev); |
| return 0; |
| |
| errout: |
| rcu_read_unlock(); |
| return err; |
| } |
| |
| int mlx5e_tc_fill_action_stats(struct mlx5e_priv *priv, |
| struct flow_offload_action *fl_act) |
| { |
| return mlx5e_tc_act_stats_fill_stats(get_act_stats_handle(priv), fl_act); |
| } |
| |
| int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv, |
| struct flow_cls_offload *f, unsigned long flags) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct rhashtable *tc_ht = get_tc_ht(priv, flags); |
| 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)) { |
| if (flow_flag_test(flow, USE_ACT_STATS)) { |
| f->use_act_stats = true; |
| } else { |
| 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. |
| */ |
| if (esw && !mlx5_devcom_for_each_peer_begin(esw->devcom)) |
| goto out; |
| |
| if (flow_flag_test(flow, DUP)) { |
| struct mlx5e_tc_flow *peer_flow; |
| |
| list_for_each_entry(peer_flow, &flow->peer_flows, peer_flows) { |
| u64 packets2; |
| u64 lastuse2; |
| u64 bytes2; |
| |
| if (!flow_flag_test(peer_flow, OFFLOADED)) |
| continue; |
| if (flow_flag_test(flow, USE_ACT_STATS)) { |
| f->use_act_stats = true; |
| break; |
| } |
| |
| counter = mlx5e_tc_get_counter(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: |
| if (esw) |
| mlx5_devcom_for_each_peer_end(esw->devcom); |
| 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; |
| } |
| |
| static int |
| tc_matchall_police_validate(const struct flow_action *action, |
| const struct flow_action_entry *act, |
| struct netlink_ext_ack *extack) |
| { |
| 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; |
| } |
| |
| 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: |
| err = tc_matchall_police_validate(flow_action, act, extack); |
| if (err) |
| return err; |
| |
| err = apply_police_params(priv, act->police.rate_bytes_ps, extack); |
| if (err) |
| return err; |
| |
| mlx5e_stats_copy_rep_stats(&rpriv->prev_vf_vport_stats, |
| &priv->stats.rep_stats); |
| 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); |
| } |
| |
| 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_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); |
| lockdep_init_map(&tc->ht.run_work.lockdep_map, "tc_ht_wq_key", &tc_ht_wq_key, 0); |
| |
| 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_grp_num = MLX5E_TC_TABLE_NUM_GROUPS; |
| attr.default_ft = tc->miss_t; |
| attr.mapping = chains_mapping; |
| attr.fs_base_prio = MLX5E_TC_PRIO; |
| |
| tc->chains = mlx5_chains_create(dev, &attr); |
| if (IS_ERR(tc->chains)) { |
| err = PTR_ERR(tc->chains); |
| goto err_miss; |
| } |
| |
| mlx5_chains_print_info(tc->chains); |
| |
| 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; |
| } |
| |
| mlx5e_tc_debugfs_init(tc, mlx5e_fs_get_debugfs_root(priv->fs)); |
| |
| tc->action_stats_handle = mlx5e_tc_act_stats_create(); |
| if (IS_ERR(tc->action_stats_handle)) { |
| err = PTR_ERR(tc->action_stats_handle); |
| goto err_act_stats; |
| } |
| |
| return 0; |
| |
| err_act_stats: |
| unregister_netdevice_notifier_dev_net(priv->netdev, |
| &tc->netdevice_nb, |
| &tc->netdevice_nn); |
| 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); |
| |
| debugfs_remove_recursive(tc->dfs_root); |
| |
| 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); |
| mlx5e_tc_act_stats_free(tc->action_stats_handle); |
| } |
| |
| 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); |
| lockdep_init_map(&tc_ht->run_work.lockdep_map, "tc_ht_wq_key", &tc_ht_wq_key, 0); |
| |
| 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 netdev_phys_item_id ppid; |
| struct mlx5e_rep_priv *rpriv; |
| struct mapping_ctx *mapping; |
| struct mlx5_eswitch *esw; |
| struct mlx5e_priv *priv; |
| u64 mapping_id, key; |
| 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; |
| } |
| |
| uplink_priv->action_stats_handle = mlx5e_tc_act_stats_create(); |
| if (IS_ERR(uplink_priv->action_stats_handle)) { |
| err = PTR_ERR(uplink_priv->action_stats_handle); |
| goto err_action_counter; |
| } |
| |
| err = dev_get_port_parent_id(priv->netdev, &ppid, false); |
| if (!err) { |
| memcpy(&key, &ppid.id, sizeof(key)); |
| mlx5_esw_offloads_devcom_init(esw, key); |
| } |
| |
| return 0; |
| |
| err_action_counter: |
| mlx5e_tc_tun_cleanup(uplink_priv->encap); |
| 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) |
| { |
| struct mlx5e_rep_priv *rpriv; |
| struct mlx5_eswitch *esw; |
| struct mlx5e_priv *priv; |
| |
| rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv); |
| priv = netdev_priv(rpriv->netdev); |
| esw = priv->mdev->priv.eswitch; |
| |
| mlx5_esw_offloads_devcom_cleanup(esw); |
| |
| 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); |
| mlx5e_tc_act_stats_free(uplink_priv->action_stats_handle); |
| } |
| |
| 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; |
| int i; |
| |
| for (i = 0; i < MLX5_MAX_PORTS; i++) { |
| if (i == mlx5_get_dev_index(esw->dev)) |
| continue; |
| list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows[i], peer[i]) |
| mlx5e_tc_del_fdb_peers_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; |
| } |
| } |
| |
| static bool mlx5e_tc_restore_tunnel(struct mlx5e_priv *priv, struct sk_buff *skb, |
| struct mlx5e_tc_update_priv *tc_priv, |
| u32 tunnel_id) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct tunnel_match_enc_opts enc_opts = {}; |
| struct mlx5_rep_uplink_priv *uplink_priv; |
| struct mlx5e_rep_priv *uplink_rpriv; |
| struct metadata_dst *tun_dst; |
| struct tunnel_match_key key; |
| u32 tun_id, enc_opts_id; |
| struct net_device *dev; |
| int err; |
| |
| enc_opts_id = tunnel_id & ENC_OPTS_BITS_MASK; |
| tun_id = tunnel_id >> ENC_OPTS_BITS; |
| |
| if (!tun_id) |
| return true; |
| |
| uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); |
| uplink_priv = &uplink_rpriv->uplink_priv; |
| |
| err = mapping_find(uplink_priv->tunnel_mapping, tun_id, &key); |
| if (err) { |
| netdev_dbg(priv->netdev, |
| "Couldn't find tunnel for tun_id: %d, err: %d\n", |
| tun_id, err); |
| return false; |
| } |
| |
| if (enc_opts_id) { |
| err = mapping_find(uplink_priv->tunnel_enc_opts_mapping, |
| enc_opts_id, &enc_opts); |
| if (err) { |
| netdev_dbg(priv->netdev, |
| "Couldn't find tunnel (opts) for tun_id: %d, err: %d\n", |
| enc_opts_id, err); |
| return false; |
| } |
| } |
| |
| switch (key.enc_control.addr_type) { |
| case FLOW_DISSECTOR_KEY_IPV4_ADDRS: |
| tun_dst = __ip_tun_set_dst(key.enc_ipv4.src, key.enc_ipv4.dst, |
| key.enc_ip.tos, key.enc_ip.ttl, |
| key.enc_tp.dst, TUNNEL_KEY, |
| key32_to_tunnel_id(key.enc_key_id.keyid), |
| enc_opts.key.len); |
| break; |
| case FLOW_DISSECTOR_KEY_IPV6_ADDRS: |
| tun_dst = __ipv6_tun_set_dst(&key.enc_ipv6.src, &key.enc_ipv6.dst, |
| key.enc_ip.tos, key.enc_ip.ttl, |
| key.enc_tp.dst, 0, TUNNEL_KEY, |
| key32_to_tunnel_id(key.enc_key_id.keyid), |
| enc_opts.key.len); |
| break; |
| default: |
| netdev_dbg(priv->netdev, |
| "Couldn't restore tunnel, unsupported addr_type: %d\n", |
| key.enc_control.addr_type); |
| return false; |
| } |
| |
| if (!tun_dst) { |
| netdev_dbg(priv->netdev, "Couldn't restore tunnel, no tun_dst\n"); |
| return false; |
| } |
| |
| tun_dst->u.tun_info.key.tp_src = key.enc_tp.src; |
| |
| if (enc_opts.key.len) |
| ip_tunnel_info_opts_set(&tun_dst->u.tun_info, |
| enc_opts.key.data, |
| enc_opts.key.len, |
| enc_opts.key.dst_opt_type); |
| |
| skb_dst_set(skb, (struct dst_entry *)tun_dst); |
| dev = dev_get_by_index(&init_net, key.filter_ifindex); |
| if (!dev) { |
| netdev_dbg(priv->netdev, |
| "Couldn't find tunnel device with ifindex: %d\n", |
| key.filter_ifindex); |
| return false; |
| } |
| |
| /* Set fwd_dev so we do dev_put() after datapath */ |
| tc_priv->fwd_dev = dev; |
| |
| skb->dev = dev; |
| |
| return true; |
| } |
| |
| static bool mlx5e_tc_restore_skb_tc_meta(struct sk_buff *skb, struct mlx5_tc_ct_priv *ct_priv, |
| struct mlx5_mapped_obj *mapped_obj, u32 zone_restore_id, |
| u32 tunnel_id, struct mlx5e_tc_update_priv *tc_priv) |
| { |
| struct mlx5e_priv *priv = netdev_priv(skb->dev); |
| struct tc_skb_ext *tc_skb_ext; |
| u64 act_miss_cookie; |
| u32 chain; |
| |
| chain = mapped_obj->type == MLX5_MAPPED_OBJ_CHAIN ? mapped_obj->chain : 0; |
| act_miss_cookie = mapped_obj->type == MLX5_MAPPED_OBJ_ACT_MISS ? |
| mapped_obj->act_miss_cookie : 0; |
| if (chain || act_miss_cookie) { |
| if (!mlx5e_tc_ct_restore_flow(ct_priv, skb, zone_restore_id)) |
| return false; |
| |
| tc_skb_ext = tc_skb_ext_alloc(skb); |
| if (!tc_skb_ext) { |
| WARN_ON(1); |
| return false; |
| } |
| |
| if (act_miss_cookie) { |
| tc_skb_ext->act_miss_cookie = act_miss_cookie; |
| tc_skb_ext->act_miss = 1; |
| } else { |
| tc_skb_ext->chain = chain; |
| } |
| } |
| |
| if (tc_priv) |
| return mlx5e_tc_restore_tunnel(priv, skb, tc_priv, tunnel_id); |
| |
| return true; |
| } |
| |
| static void mlx5e_tc_restore_skb_sample(struct mlx5e_priv *priv, struct sk_buff *skb, |
| struct mlx5_mapped_obj *mapped_obj, |
| struct mlx5e_tc_update_priv *tc_priv) |
| { |
| if (!mlx5e_tc_restore_tunnel(priv, skb, tc_priv, mapped_obj->sample.tunnel_id)) { |
| netdev_dbg(priv->netdev, |
| "Failed to restore tunnel info for sampled packet\n"); |
| return; |
| } |
| mlx5e_tc_sample_skb(skb, mapped_obj); |
| } |
| |
| static bool mlx5e_tc_restore_skb_int_port(struct mlx5e_priv *priv, struct sk_buff *skb, |
| struct mlx5_mapped_obj *mapped_obj, |
| struct mlx5e_tc_update_priv *tc_priv, |
| u32 tunnel_id) |
| { |
| struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| struct mlx5_rep_uplink_priv *uplink_priv; |
| struct mlx5e_rep_priv *uplink_rpriv; |
| bool forward_tx = false; |
| |
| /* Tunnel restore takes precedence over int port restore */ |
| if (tunnel_id) |
| return mlx5e_tc_restore_tunnel(priv, skb, tc_priv, tunnel_id); |
| |
| uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH); |
| uplink_priv = &uplink_rpriv->uplink_priv; |
| |
| if (mlx5e_tc_int_port_dev_fwd(uplink_priv->int_port_priv, skb, |
| mapped_obj->int_port_metadata, &forward_tx)) { |
| /* Set fwd_dev for future dev_put */ |
| tc_priv->fwd_dev = skb->dev; |
| tc_priv->forward_tx = forward_tx; |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe, struct sk_buff *skb, |
| struct mapping_ctx *mapping_ctx, u32 mapped_obj_id, |
| struct mlx5_tc_ct_priv *ct_priv, |
| u32 zone_restore_id, u32 tunnel_id, |
| struct mlx5e_tc_update_priv *tc_priv) |
| { |
| struct mlx5e_priv *priv = netdev_priv(skb->dev); |
| struct mlx5_mapped_obj mapped_obj; |
| int err; |
| |
| err = mapping_find(mapping_ctx, mapped_obj_id, &mapped_obj); |
| if (err) { |
| netdev_dbg(skb->dev, |
| "Couldn't find mapped object for mapped_obj_id: %d, err: %d\n", |
| mapped_obj_id, err); |
| return false; |
| } |
| |
| switch (mapped_obj.type) { |
| case MLX5_MAPPED_OBJ_CHAIN: |
| case MLX5_MAPPED_OBJ_ACT_MISS: |
| return mlx5e_tc_restore_skb_tc_meta(skb, ct_priv, &mapped_obj, zone_restore_id, |
| tunnel_id, tc_priv); |
| case MLX5_MAPPED_OBJ_SAMPLE: |
| mlx5e_tc_restore_skb_sample(priv, skb, &mapped_obj, tc_priv); |
| tc_priv->skb_done = true; |
| return true; |
| case MLX5_MAPPED_OBJ_INT_PORT_METADATA: |
| return mlx5e_tc_restore_skb_int_port(priv, skb, &mapped_obj, tc_priv, tunnel_id); |
| default: |
| netdev_dbg(priv->netdev, "Invalid mapped object type: %d\n", mapped_obj.type); |
| return false; |
| } |
| |
| return false; |
| } |
| |
| bool mlx5e_tc_update_skb_nic(struct mlx5_cqe64 *cqe, struct sk_buff *skb) |
| { |
| struct mlx5e_priv *priv = netdev_priv(skb->dev); |
| u32 mapped_obj_id, reg_b, zone_restore_id; |
| struct mlx5_tc_ct_priv *ct_priv; |
| struct mapping_ctx *mapping_ctx; |
| struct mlx5e_tc_table *tc; |
| |
| reg_b = be32_to_cpu(cqe->ft_metadata); |
| tc = mlx5e_fs_get_tc(priv->fs); |
| mapped_obj_id = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK; |
| zone_restore_id = (reg_b >> MLX5_REG_MAPPING_MOFFSET(NIC_ZONE_RESTORE_TO_REG)) & |
| ESW_ZONE_ID_MASK; |
| ct_priv = tc->ct; |
| mapping_ctx = tc->mapping; |
| |
| return mlx5e_tc_update_skb(cqe, skb, mapping_ctx, mapped_obj_id, ct_priv, zone_restore_id, |
| 0, NULL); |
| } |
| |
| static struct mapping_ctx * |
| mlx5e_get_priv_obj_mapping(struct mlx5e_priv *priv) |
| { |
| struct mlx5e_tc_table *tc; |
| struct mlx5_eswitch *esw; |
| struct mapping_ctx *ctx; |
| |
| if (is_mdev_switchdev_mode(priv->mdev)) { |
| esw = priv->mdev->priv.eswitch; |
| ctx = esw->offloads.reg_c0_obj_pool; |
| } else { |
| tc = mlx5e_fs_get_tc(priv->fs); |
| ctx = tc->mapping; |
| } |
| |
| return ctx; |
| } |
| |
| int mlx5e_tc_action_miss_mapping_get(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr, |
| u64 act_miss_cookie, u32 *act_miss_mapping) |
| { |
| struct mlx5_mapped_obj mapped_obj = {}; |
| struct mlx5_eswitch *esw; |
| struct mapping_ctx *ctx; |
| int err; |
| |
| ctx = mlx5e_get_priv_obj_mapping(priv); |
| mapped_obj.type = MLX5_MAPPED_OBJ_ACT_MISS; |
| mapped_obj.act_miss_cookie = act_miss_cookie; |
| err = mapping_add(ctx, &mapped_obj, act_miss_mapping); |
| if (err) |
| return err; |
| |
| if (!is_mdev_switchdev_mode(priv->mdev)) |
| return 0; |
| |
| esw = priv->mdev->priv.eswitch; |
| attr->act_id_restore_rule = esw_add_restore_rule(esw, *act_miss_mapping); |
| if (IS_ERR(attr->act_id_restore_rule)) { |
| err = PTR_ERR(attr->act_id_restore_rule); |
| goto err_rule; |
| } |
| |
| return 0; |
| |
| err_rule: |
| mapping_remove(ctx, *act_miss_mapping); |
| return err; |
| } |
| |
| void mlx5e_tc_action_miss_mapping_put(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr, |
| u32 act_miss_mapping) |
| { |
| struct mapping_ctx *ctx = mlx5e_get_priv_obj_mapping(priv); |
| |
| if (is_mdev_switchdev_mode(priv->mdev)) |
| mlx5_del_flow_rules(attr->act_id_restore_rule); |
| mapping_remove(ctx, act_miss_mapping); |
| } |