[thirdparty/kernel/stable.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_tc.c

/*
 * 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;

        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;

        indir = kvmalloc(sizeof(*indir), GFP_KERNEL);
        if (!indir)
                return -ENOMEM;

        mlx5e_rss_params_indir_init_uniform(indir, hp->num_channels);
        err = mlx5e_rqt_init_indir(&hp->indir_rqt, mdev, hp->pair->rqn, hp->num_channels,
                                   mlx5e_rx_res_get_current_hash(priv->rx_res).hfunc,
                                   indir);

        kvfree(indir);
        return err;
}

static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
{
        struct mlx5e_priv *priv = hp->func_priv;
        struct mlx5e_rss_params_hash rss_hash;
        enum mlx5_traffic_types tt, max_tt;
        struct mlx5e_tir_builder *builder;
        int err = 0;

        builder = mlx5e_tir_builder_alloc(false);
        if (!builder)
                return -ENOMEM;

        rss_hash = mlx5e_rx_res_get_current_hash(priv->rx_res);

        for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
                struct mlx5e_rss_params_traffic_type rss_tt;

                rss_tt = mlx5e_rss_get_default_tt_config(tt);

                mlx5e_tir_builder_build_rqt(builder, hp->tdn,
                                            mlx5e_rqt_get_rqtn(&hp->indir_rqt),
                                            false);
                mlx5e_tir_builder_build_rss(builder, &rss_hash, &rss_tt, false);

                err = mlx5e_tir_init(&hp->indir_tir[tt], builder, hp->func_mdev, false);
                if (err) {
                        mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
                        goto err_destroy_tirs;
                }

                mlx5e_tir_builder_clear(builder);
        }

out:
        mlx5e_tir_builder_free(builder);
        return err;

err_destroy_tirs:
        max_tt = tt;
        for (tt = 0; tt < max_tt; tt++)
                mlx5e_tir_destroy(&hp->indir_tir[tt]);

        goto out;
}

static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
{
        int tt;

        for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
                mlx5e_tir_destroy(&hp->indir_tir[tt]);
}

static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
                                         struct ttc_params *ttc_params)
{
        struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
        int tt;

        memset(ttc_params, 0, sizeof(*ttc_params));

        ttc_params->ns = mlx5_get_flow_namespace(hp->func_mdev,
                                                 MLX5_FLOW_NAMESPACE_KERNEL);
        for (tt = 0; tt < MLX5_NUM_TT; tt++) {
                ttc_params->dests[tt].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
                ttc_params->dests[tt].tir_num =
                        tt == MLX5_TT_ANY ?
                                mlx5e_tir_get_tirn(&hp->direct_tir) :
                                mlx5e_tir_get_tirn(&hp->indir_tir[tt]);
        }

        ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
        ft_attr->prio = MLX5E_TC_PRIO;
}

static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
{
        struct mlx5e_priv *priv = hp->func_priv;
        struct ttc_params ttc_params;
        struct mlx5_ttc_table *ttc;
        int err;

        err = mlx5e_hairpin_create_indirect_rqt(hp);
        if (err)
                return err;

        err = mlx5e_hairpin_create_indirect_tirs(hp);
        if (err)
                goto err_create_indirect_tirs;

        mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
        hp->ttc = mlx5_create_ttc_table(priv->mdev, &ttc_params);
        if (IS_ERR(hp->ttc)) {
                err = PTR_ERR(hp->ttc);
                goto err_create_ttc_table;
        }

        ttc = mlx5e_fs_get_ttc(priv->fs, false);
        netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
                   hp->num_channels,
                   mlx5_get_ttc_flow_table(ttc)->id);

        return 0;

err_create_ttc_table:
        mlx5e_hairpin_destroy_indirect_tirs(hp);
err_create_indirect_tirs:
        mlx5e_rqt_destroy(&hp->indir_rqt);

        return err;
}

static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
{
        mlx5_destroy_ttc_table(hp->ttc);
        mlx5e_hairpin_destroy_indirect_tirs(hp);
        mlx5e_rqt_destroy(&hp->indir_rqt);
}

static struct mlx5e_hairpin *
mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
                     int peer_ifindex)
{
        struct mlx5_core_dev *func_mdev, *peer_mdev;
        struct mlx5e_hairpin *hp;
        struct mlx5_hairpin *pair;
        int err;

        hp = kzalloc(sizeof(*hp), GFP_KERNEL);
        if (!hp)
                return ERR_PTR(-ENOMEM);

        func_mdev = priv->mdev;
        peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
        if (IS_ERR(peer_mdev)) {
                err = PTR_ERR(peer_mdev);
                goto create_pair_err;
        }

        pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
        if (IS_ERR(pair)) {
                err = PTR_ERR(pair);
                goto create_pair_err;
        }
        hp->pair = pair;
        hp->func_mdev = func_mdev;
        hp->func_priv = priv;
        hp->num_channels = params->num_channels;
        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, &params, 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);

        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);
        unready_flow_del(flow);
        mutex_unlock(&uplink_priv->unready_flows_lock);
}

bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_dev)
{
        struct mlx5_core_dev *out_mdev, *route_mdev;
        struct mlx5e_priv *out_priv, *route_priv;

        out_priv = netdev_priv(out_dev);
        out_mdev = out_priv->mdev;
        route_priv = netdev_priv(route_dev);
        route_mdev = route_priv->mdev;

        if (out_mdev->coredev_type != MLX5_COREDEV_PF)
                return false;

        if (route_mdev->coredev_type != MLX5_COREDEV_VF &&
            route_mdev->coredev_type != MLX5_COREDEV_SF)
                return false;

        return mlx5e_same_hw_devs(out_priv, route_priv);
}

int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev, u16 *vport)
{
        struct mlx5e_priv *out_priv, *route_priv;
        struct mlx5_devcom *devcom = NULL;
        struct mlx5_core_dev *route_mdev;
        struct mlx5_eswitch *esw;
        u16 vhca_id;
        int err;

        out_priv = netdev_priv(out_dev);
        esw = out_priv->mdev->priv.eswitch;
        route_priv = netdev_priv(route_dev);
        route_mdev = route_priv->mdev;

        vhca_id = MLX5_CAP_GEN(route_mdev, vhca_id);
        if (mlx5_lag_is_active(out_priv->mdev)) {
                /* In lag case we may get devices from different eswitch instances.
                 * If we failed to get vport num, it means, mostly, that we on the wrong
                 * eswitch.
                 */
                err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
                if (err != -ENOENT)
                        return err;

                devcom = out_priv->mdev->priv.devcom;
                esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
                if (!esw)
                        return -ENODEV;
        }

        err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
        if (devcom)
                mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
        return err;
}

static int
set_encap_dests(struct mlx5e_priv *priv,
                struct mlx5e_tc_flow *flow,
                struct mlx5_flow_attr *attr,
                struct netlink_ext_ack *extack,
                bool *vf_tun)
{
        struct mlx5e_tc_flow_parse_attr *parse_attr;
        struct mlx5_esw_flow_attr *esw_attr;
        struct net_device *encap_dev = NULL;
        struct mlx5e_rep_priv *rpriv;
        struct mlx5e_priv *out_priv;
        int out_index;
        int err = 0;

        if (!mlx5e_is_eswitch_flow(flow))
                return 0;

        parse_attr = attr->parse_attr;
        esw_attr = attr->esw_attr;
        *vf_tun = false;

        for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
                struct net_device *out_dev;
                int mirred_ifindex;

                if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
                        continue;

                mirred_ifindex = parse_attr->mirred_ifindex[out_index];
                out_dev = dev_get_by_index(dev_net(priv->netdev), mirred_ifindex);
                if (!out_dev) {
                        NL_SET_ERR_MSG_MOD(extack, "Requested mirred device not found");
                        err = -ENODEV;
                        goto out;
                }
                err = mlx5e_attach_encap(priv, flow, attr, out_dev, out_index,
                                         extack, &encap_dev);
                dev_put(out_dev);
                if (err)
                        goto out;

                if (esw_attr->dests[out_index].flags &
                    MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE &&
                    !esw_attr->dest_int_port)
                        *vf_tun = true;

                out_priv = netdev_priv(encap_dev);
                rpriv = out_priv->ppriv;
                esw_attr->dests[out_index].rep = rpriv->rep;
                esw_attr->dests[out_index].mdev = out_priv->mdev;
        }

        if (*vf_tun && esw_attr->out_count > 1) {
                NL_SET_ERR_MSG_MOD(extack, "VF tunnel encap with mirroring is not supported");
                err = -EOPNOTSUPP;
                goto out;
        }

out:
        return err;
}

static void
clean_encap_dests(struct mlx5e_priv *priv,
                  struct mlx5e_tc_flow *flow,
                  struct mlx5_flow_attr *attr)
{
        struct mlx5_esw_flow_attr *esw_attr;
        int out_index;

        if (!mlx5e_is_eswitch_flow(flow))
                return;

        esw_attr = attr->esw_attr;

        for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
                if (!(esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
                        continue;

                mlx5e_detach_encap(priv, flow, attr, out_index);
                kfree(attr->parse_attr->tun_info[out_index]);
        }
}

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 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;

        err = set_encap_dests(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;
        struct mlx5_esw_flow_attr *esw_attr;

        esw_attr = attr->esw_attr;
        mlx5e_put_flow_tunnel_id(flow);

        if (flow_flag_test(flow, NOT_READY))
                remove_unready_flow(flow);

        if (mlx5e_is_offloaded_flow(flow)) {
                if (flow_flag_test(flow, SLOW))
                        mlx5e_tc_unoffload_from_slow_path(esw, flow);
                else
                        mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
        }
        complete_all(&flow->del_hw_done);

        if (mlx5_flow_has_geneve_opt(flow))
                mlx5_geneve_tlv_option_del(priv->mdev->geneve);

        if (flow->decap_route)
                mlx5e_detach_decap_route(priv, flow);

        mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr);

        if (esw_attr->int_port)
                mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->int_port);

        if (esw_attr->dest_int_port)
                mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(priv), esw_attr->dest_int_port);

        if (flow_flag_test(flow, L3_TO_L2_DECAP))
                mlx5e_detach_decap(priv, flow);

        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)
{
        struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;

        if (!flow_flag_test(flow, ESWITCH) ||
            !flow_flag_test(flow, DUP))
                return;

        mutex_lock(&esw->offloads.peer_mutex);
        list_del(&flow->peer);
        mutex_unlock(&esw->offloads.peer_mutex);

        flow_flag_clear(flow, DUP);

        if (refcount_dec_and_test(&flow->peer_flow->refcnt)) {
                mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
                kfree(flow->peer_flow);
        }

        flow->peer_flow = NULL;
}

static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
{
        struct mlx5_core_dev *dev = flow->priv->mdev;
        struct mlx5_devcom *devcom = dev->priv.devcom;
        struct mlx5_eswitch *peer_esw;

        peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
        if (!peer_esw)
                return;

        __mlx5e_tc_del_fdb_peer_flow(flow);
        mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
}

static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
                              struct mlx5e_tc_flow *flow)
{
        if (mlx5e_is_eswitch_flow(flow)) {
                mlx5e_tc_del_fdb_peer_flow(flow);
                mlx5e_tc_del_fdb_flow(priv, flow);
        } else {
                mlx5e_tc_del_nic_flow(priv, flow);
        }
}

static bool flow_requires_tunnel_mapping(u32 chain, struct flow_cls_offload *f)
{
        struct flow_rule *rule = flow_cls_offload_flow_rule(f);
        struct flow_action *flow_action = &rule->action;
        const struct flow_action_entry *act;
        int i;

        if (chain)
                return false;

        flow_action_for_each(i, act, flow_action) {
                switch (act->id) {
                case FLOW_ACTION_GOTO:
                        return true;
                case FLOW_ACTION_SAMPLE:
                        return true;
                default:
                        continue;
                }
        }

        return false;
}

static int
enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv,
                                    struct flow_dissector_key_enc_opts *opts,
                                    struct netlink_ext_ack *extack,
                                    bool *dont_care)
{
        struct geneve_opt *opt;
        int off = 0;

        *dont_care = true;

        while (opts->len > off) {
                opt = (struct geneve_opt *)&opts->data[off];

                if (!(*dont_care) || opt->opt_class || opt->type ||
                    memchr_inv(opt->opt_data, 0, opt->length * 4)) {
                        *dont_care = false;

                        if (opt->opt_class != htons(U16_MAX) ||
                            opt->type != U8_MAX) {
                                NL_SET_ERR_MSG_MOD(extack,
                                                   "Partial match of tunnel options in chain > 0 isn't supported");
                                netdev_warn(priv->netdev,
                                            "Partial match of tunnel options in chain > 0 isn't supported");
                                return -EOPNOTSUPP;
                        }
                }

                off += sizeof(struct geneve_opt) + opt->length * 4;
        }

        return 0;
}

#define COPY_DISSECTOR(rule, diss_key, dst)\
({ \
        struct flow_rule *__rule = (rule);\
        typeof(dst) __dst = dst;\
\
        memcpy(__dst,\
               skb_flow_dissector_target(__rule->match.dissector,\
                                         diss_key,\
                                         __rule->match.key),\
               sizeof(*__dst));\
})

static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
                                    struct mlx5e_tc_flow *flow,
                                    struct flow_cls_offload *f,
                                    struct net_device *filter_dev)
{
        struct flow_rule *rule = flow_cls_offload_flow_rule(f);
        struct netlink_ext_ack *extack = f->common.extack;
        struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
        struct flow_match_enc_opts enc_opts_match;
        struct tunnel_match_enc_opts tun_enc_opts;
        struct mlx5_rep_uplink_priv *uplink_priv;
        struct mlx5_flow_attr *attr = flow->attr;
        struct mlx5e_rep_priv *uplink_rpriv;
        struct tunnel_match_key tunnel_key;
        bool enc_opts_is_dont_care = true;
        u32 tun_id, enc_opts_id = 0;
        struct mlx5_eswitch *esw;
        u32 value, mask;
        int err;

        esw = priv->mdev->priv.eswitch;
        uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
        uplink_priv = &uplink_rpriv->uplink_priv;

        memset(&tunnel_key, 0, sizeof(tunnel_key));
        COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL,
                       &tunnel_key.enc_control);
        if (tunnel_key.enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
                COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
                               &tunnel_key.enc_ipv4);
        else
                COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
                               &tunnel_key.enc_ipv6);
        COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IP, &tunnel_key.enc_ip);
        COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_PORTS,
                       &tunnel_key.enc_tp);
        COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_KEYID,
                       &tunnel_key.enc_key_id);
        tunnel_key.filter_ifindex = filter_dev->ifindex;

        err = mapping_add(uplink_priv->tunnel_mapping, &tunnel_key, &tun_id);
        if (err)
                return err;

        flow_rule_match_enc_opts(rule, &enc_opts_match);
        err = enc_opts_is_dont_care_or_full_match(priv,
                                                  enc_opts_match.mask,
                                                  extack,
                                                  &enc_opts_is_dont_care);
        if (err)
                goto err_enc_opts;

        if (!enc_opts_is_dont_care) {
                memset(&tun_enc_opts, 0, sizeof(tun_enc_opts));
                memcpy(&tun_enc_opts.key, enc_opts_match.key,
                       sizeof(*enc_opts_match.key));
                memcpy(&tun_enc_opts.mask, enc_opts_match.mask,
                       sizeof(*enc_opts_match.mask));

                err = mapping_add(uplink_priv->tunnel_enc_opts_mapping,
                                  &tun_enc_opts, &enc_opts_id);
                if (err)
                        goto err_enc_opts;
        }

        value = tun_id << ENC_OPTS_BITS | enc_opts_id;
        mask = enc_opts_id ? TUNNEL_ID_MASK :
                             (TUNNEL_ID_MASK & ~ENC_OPTS_BITS_MASK);

        if (attr->chain) {
                mlx5e_tc_match_to_reg_match(&attr->parse_attr->spec,
                                            TUNNEL_TO_REG, value, mask);
        } else {
                mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
                err = mlx5e_tc_match_to_reg_set(priv->mdev,
                                                mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB,
                                                TUNNEL_TO_REG, value);
                if (err)
                        goto err_set;

                attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
        }

        flow->attr->tunnel_id = value;
        return 0;

err_set:
        if (enc_opts_id)
                mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
                               enc_opts_id);
err_enc_opts:
        mapping_remove(uplink_priv->tunnel_mapping, tun_id);
        return err;
}

static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow)
{
        u32 enc_opts_id = flow->attr->tunnel_id & ENC_OPTS_BITS_MASK;
        u32 tun_id = flow->attr->tunnel_id >> ENC_OPTS_BITS;
        struct mlx5_rep_uplink_priv *uplink_priv;
        struct mlx5e_rep_priv *uplink_rpriv;
        struct mlx5_eswitch *esw;

        esw = flow->priv->mdev->priv.eswitch;
        uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
        uplink_priv = &uplink_rpriv->uplink_priv;

        if (tun_id)
                mapping_remove(uplink_priv->tunnel_mapping, tun_id);
        if (enc_opts_id)
                mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
                               enc_opts_id);
}

void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
                            struct flow_match_basic *match, bool outer,
                            void *headers_c, void *headers_v)
{
        bool ip_version_cap;

        ip_version_cap = outer ?
                MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
                                          ft_field_support.outer_ip_version) :
                MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
                                          ft_field_support.inner_ip_version);

        if (ip_version_cap && match->mask->n_proto == htons(0xFFFF) &&
            (match->key->n_proto == htons(ETH_P_IP) ||
             match->key->n_proto == htons(ETH_P_IPV6))) {
                MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version,
                         match->key->n_proto == htons(ETH_P_IP) ? 4 : 6);
        } else {
                MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
                         ntohs(match->mask->n_proto));
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
                         ntohs(match->key->n_proto));
        }
}

u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer)
{
        void *headers_v;
        u16 ethertype;
        u8 ip_version;

        if (outer)
                headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
        else
                headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers);

        ip_version = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_version);
        /* Return ip_version converted from ethertype anyway */
        if (!ip_version) {
                ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
                if (ethertype == ETH_P_IP || ethertype == ETH_P_ARP)
                        ip_version = 4;
                else if (ethertype == ETH_P_IPV6)
                        ip_version = 6;
        }
        return ip_version;
}

/* Tunnel device follows RFC 6040, see include/net/inet_ecn.h.
 * And changes inner ip_ecn depending on inner and outer ip_ecn as follows:
 *      +---------+----------------------------------------+
 *      |Arriving |         Arriving Outer Header          |
 *      |   Inner +---------+---------+---------+----------+
 *      |  Header | Not-ECT | ECT(0)  | ECT(1)  |   CE     |
 *      +---------+---------+---------+---------+----------+
 *      | Not-ECT | Not-ECT | Not-ECT | Not-ECT | <drop>   |
 *      |  ECT(0) |  ECT(0) | ECT(0)  | ECT(1)  |   CE*    |
 *      |  ECT(1) |  ECT(1) | ECT(1)  | ECT(1)* |   CE*    |
 *      |    CE   |   CE    |  CE     | CE      |   CE     |
 *      +---------+---------+---------+---------+----------+
 *
 * Tc matches on inner after decapsulation on tunnel device, but hw offload matches
 * the inner ip_ecn value before hardware decap action.
 *
 * Cells marked are changed from original inner packet ip_ecn value during decap, and
 * so matching those values on inner ip_ecn before decap will fail.
 *
 * The following helper allows offload when inner ip_ecn won't be changed by outer ip_ecn,
 * except for the outer ip_ecn = CE, where in all cases inner ip_ecn will be changed to CE,
 * and such we can drop the inner ip_ecn=CE match.
 */

static int mlx5e_tc_verify_tunnel_ecn(struct mlx5e_priv *priv,
                                      struct flow_cls_offload *f,
                                      bool *match_inner_ecn)
{
        u8 outer_ecn_mask = 0, outer_ecn_key = 0, inner_ecn_mask = 0, inner_ecn_key = 0;
        struct flow_rule *rule = flow_cls_offload_flow_rule(f);
        struct netlink_ext_ack *extack = f->common.extack;
        struct flow_match_ip match;

        *match_inner_ecn = true;

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
                flow_rule_match_enc_ip(rule, &match);
                outer_ecn_key = match.key->tos & INET_ECN_MASK;
                outer_ecn_mask = match.mask->tos & INET_ECN_MASK;
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
                flow_rule_match_ip(rule, &match);
                inner_ecn_key = match.key->tos & INET_ECN_MASK;
                inner_ecn_mask = match.mask->tos & INET_ECN_MASK;
        }

        if (outer_ecn_mask != 0 && outer_ecn_mask != INET_ECN_MASK) {
                NL_SET_ERR_MSG_MOD(extack, "Partial match on enc_tos ecn bits isn't supported");
                netdev_warn(priv->netdev, "Partial match on enc_tos ecn bits isn't supported");
                return -EOPNOTSUPP;
        }

        if (!outer_ecn_mask) {
                if (!inner_ecn_mask)
                        return 0;

                NL_SET_ERR_MSG_MOD(extack,
                                   "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
                netdev_warn(priv->netdev,
                            "Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
                return -EOPNOTSUPP;
        }

        if (inner_ecn_mask && inner_ecn_mask != INET_ECN_MASK) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
                netdev_warn(priv->netdev,
                            "Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
                return -EOPNOTSUPP;
        }

        if (!inner_ecn_mask)
                return 0;

        /* Both inner and outer have full mask on ecn */

        if (outer_ecn_key == INET_ECN_ECT_1) {
                /* inner ecn might change by DECAP action */

                NL_SET_ERR_MSG_MOD(extack, "Match on enc_tos ecn = ECT(1) isn't supported");
                netdev_warn(priv->netdev, "Match on enc_tos ecn = ECT(1) isn't supported");
                return -EOPNOTSUPP;
        }

        if (outer_ecn_key != INET_ECN_CE)
                return 0;

        if (inner_ecn_key != INET_ECN_CE) {
                /* Can't happen in software, as packet ecn will be changed to CE after decap */
                NL_SET_ERR_MSG_MOD(extack,
                                   "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
                netdev_warn(priv->netdev,
                            "Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
                return -EOPNOTSUPP;
        }

        /* outer ecn = CE, inner ecn = CE, as decap will change inner ecn to CE in anycase,
         * drop match on inner ecn
         */
        *match_inner_ecn = false;

        return 0;
}

static int parse_tunnel_attr(struct mlx5e_priv *priv,
                             struct mlx5e_tc_flow *flow,
                             struct mlx5_flow_spec *spec,
                             struct flow_cls_offload *f,
                             struct net_device *filter_dev,
                             u8 *match_level,
                             bool *match_inner)
{
        struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(filter_dev);
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct netlink_ext_ack *extack = f->common.extack;
        bool needs_mapping, sets_mapping;
        int err;

        if (!mlx5e_is_eswitch_flow(flow)) {
                NL_SET_ERR_MSG_MOD(extack, "Match on tunnel is not supported");
                return -EOPNOTSUPP;
        }

        needs_mapping = !!flow->attr->chain;
        sets_mapping = flow_requires_tunnel_mapping(flow->attr->chain, f);
        *match_inner = !needs_mapping;

        if ((needs_mapping || sets_mapping) &&
            !mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Chains on tunnel devices isn't supported without register loopback support");
                netdev_warn(priv->netdev,
                            "Chains on tunnel devices isn't supported without register loopback support");
                return -EOPNOTSUPP;
        }

        if (!flow->attr->chain) {
                err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
                                         match_level);
                if (err) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "Failed to parse tunnel attributes");
                        netdev_warn(priv->netdev,
                                    "Failed to parse tunnel attributes");
                        return err;
                }

                /* With mpls over udp we decapsulate using packet reformat
                 * object
                 */
                if (!netif_is_bareudp(filter_dev))
                        flow->attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
                err = mlx5e_tc_set_attr_rx_tun(flow, spec);
                if (err)
                        return err;
        } else if (tunnel) {
                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->ingress_ifindex)
                return 0;

        if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
                NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
                return -EOPNOTSUPP;
        }

        ingress_dev = __dev_get_by_index(dev_net(filter_dev),
                                         match.key->ingress_ifindex);
        if (!ingress_dev) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Can't find the ingress port to match on");
                return -ENOENT;
        }

        if (ingress_dev != filter_dev) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Can't match on the ingress filter port");
                return -EOPNOTSUPP;
        }

        return 0;
}

static bool skip_key_basic(struct net_device *filter_dev,
                           struct flow_cls_offload *f)
{
        /* When doing mpls over udp decap, the user needs to provide
         * MPLS_UC as the protocol in order to be able to match on mpls
         * label fields.  However, the actual ethertype is IP so we want to
         * avoid matching on this, otherwise we'll fail the match.
         */
        if (netif_is_bareudp(filter_dev) && f->common.chain_index == 0)
                return true;

        return false;
}

static int __parse_cls_flower(struct mlx5e_priv *priv,
                              struct mlx5e_tc_flow *flow,
                              struct mlx5_flow_spec *spec,
                              struct flow_cls_offload *f,
                              struct net_device *filter_dev,
                              u8 *inner_match_level, u8 *outer_match_level)
{
        struct netlink_ext_ack *extack = f->common.extack;
        void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
                                       outer_headers);
        void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
                                       outer_headers);
        void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
                                    misc_parameters);
        void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
                                    misc_parameters);
        void *misc_c_3 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
                                    misc_parameters_3);
        void *misc_v_3 = MLX5_ADDR_OF(fte_match_param, spec->match_value,
                                    misc_parameters_3);
        struct flow_rule *rule = flow_cls_offload_flow_rule(f);
        struct flow_dissector *dissector = rule->match.dissector;
        enum fs_flow_table_type fs_type;
        bool match_inner_ecn = true;
        u16 addr_type = 0;
        u8 ip_proto = 0;
        u8 *match_level;
        int err;

        fs_type = mlx5e_is_eswitch_flow(flow) ? FS_FT_FDB : FS_FT_NIC_RX;
        match_level = outer_match_level;

        if (dissector->used_keys &
            ~(BIT(FLOW_DISSECTOR_KEY_META) |
              BIT(FLOW_DISSECTOR_KEY_CONTROL) |
              BIT(FLOW_DISSECTOR_KEY_BASIC) |
              BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
              BIT(FLOW_DISSECTOR_KEY_VLAN) |
              BIT(FLOW_DISSECTOR_KEY_CVLAN) |
              BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
              BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
              BIT(FLOW_DISSECTOR_KEY_PORTS) |
              BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
              BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
              BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
              BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
              BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
              BIT(FLOW_DISSECTOR_KEY_TCP) |
              BIT(FLOW_DISSECTOR_KEY_IP)  |
              BIT(FLOW_DISSECTOR_KEY_CT) |
              BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
              BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
              BIT(FLOW_DISSECTOR_KEY_ICMP) |
              BIT(FLOW_DISSECTOR_KEY_MPLS))) {
                NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
                netdev_dbg(priv->netdev, "Unsupported key used: 0x%x\n",
                           dissector->used_keys);
                return -EOPNOTSUPP;
        }

        if (mlx5e_get_tc_tun(filter_dev)) {
                bool match_inner = false;

                err = parse_tunnel_attr(priv, flow, spec, f, filter_dev,
                                        outer_match_level, &match_inner);
                if (err)
                        return err;

                if (match_inner) {
                        /* header pointers should point to the inner headers
                         * if the packet was decapsulated already.
                         * outer headers are set by parse_tunnel_attr.
                         */
                        match_level = inner_match_level;
                        headers_c = get_match_inner_headers_criteria(spec);
                        headers_v = get_match_inner_headers_value(spec);
                }

                err = mlx5e_tc_verify_tunnel_ecn(priv, f, &match_inner_ecn);
                if (err)
                        return err;
        }

        err = mlx5e_flower_parse_meta(filter_dev, f);
        if (err)
                return err;

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC) &&
            !skip_key_basic(filter_dev, f)) {
                struct flow_match_basic match;

                flow_rule_match_basic(rule, &match);
                mlx5e_tc_set_ethertype(priv->mdev, &match,
                                       match_level == outer_match_level,
                                       headers_c, headers_v);

                if (match.mask->n_proto)
                        *match_level = MLX5_MATCH_L2;
        }
        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
            is_vlan_dev(filter_dev)) {
                struct flow_dissector_key_vlan filter_dev_mask;
                struct flow_dissector_key_vlan filter_dev_key;
                struct flow_match_vlan match;

                if (is_vlan_dev(filter_dev)) {
                        match.key = &filter_dev_key;
                        match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
                        match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
                        match.key->vlan_priority = 0;
                        match.mask = &filter_dev_mask;
                        memset(match.mask, 0xff, sizeof(*match.mask));
                        match.mask->vlan_priority = 0;
                } else {
                        flow_rule_match_vlan(rule, &match);
                }
                if (match.mask->vlan_id ||
                    match.mask->vlan_priority ||
                    match.mask->vlan_tpid) {
                        if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
                                MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                         svlan_tag, 1);
                                MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                         svlan_tag, 1);
                        } else {
                                MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                         cvlan_tag, 1);
                                MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                         cvlan_tag, 1);
                        }

                        MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
                                 match.mask->vlan_id);
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
                                 match.key->vlan_id);

                        MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
                                 match.mask->vlan_priority);
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
                                 match.key->vlan_priority);

                        *match_level = MLX5_MATCH_L2;

                        if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN) &&
                            match.mask->vlan_eth_type &&
                            MLX5_CAP_FLOWTABLE_TYPE(priv->mdev,
                                                    ft_field_support.outer_second_vid,
                                                    fs_type)) {
                                MLX5_SET(fte_match_set_misc, misc_c,
                                         outer_second_cvlan_tag, 1);
                                spec->match_criteria_enable |=
                                        MLX5_MATCH_MISC_PARAMETERS;
                        }
                }
        } else if (*match_level != MLX5_MATCH_NONE) {
                /* cvlan_tag enabled in match criteria and
                 * disabled in match value means both S & C tags
                 * don't exist (untagged of both)
                 */
                MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
                *match_level = MLX5_MATCH_L2;
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
                struct flow_match_vlan match;

                flow_rule_match_cvlan(rule, &match);
                if (match.mask->vlan_id ||
                    match.mask->vlan_priority ||
                    match.mask->vlan_tpid) {
                        if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid,
                                                     fs_type)) {
                                NL_SET_ERR_MSG_MOD(extack,
                                                   "Matching on CVLAN is not supported");
                                return -EOPNOTSUPP;
                        }

                        if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
                                MLX5_SET(fte_match_set_misc, misc_c,
                                         outer_second_svlan_tag, 1);
                                MLX5_SET(fte_match_set_misc, misc_v,
                                         outer_second_svlan_tag, 1);
                        } else {
                                MLX5_SET(fte_match_set_misc, misc_c,
                                         outer_second_cvlan_tag, 1);
                                MLX5_SET(fte_match_set_misc, misc_v,
                                         outer_second_cvlan_tag, 1);
                        }

                        MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
                                 match.mask->vlan_id);
                        MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
                                 match.key->vlan_id);
                        MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
                                 match.mask->vlan_priority);
                        MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
                                 match.key->vlan_priority);

                        *match_level = MLX5_MATCH_L2;
                        spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
                }
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
                struct flow_match_eth_addrs match;

                flow_rule_match_eth_addrs(rule, &match);
                ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                             dmac_47_16),
                                match.mask->dst);
                ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                             dmac_47_16),
                                match.key->dst);

                ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                             smac_47_16),
                                match.mask->src);
                ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                             smac_47_16),
                                match.key->src);

                if (!is_zero_ether_addr(match.mask->src) ||
                    !is_zero_ether_addr(match.mask->dst))
                        *match_level = MLX5_MATCH_L2;
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
                struct flow_match_control match;

                flow_rule_match_control(rule, &match);
                addr_type = match.key->addr_type;

                /* the HW doesn't support frag first/later */
                if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
                        NL_SET_ERR_MSG_MOD(extack, "Match on frag first/later is not supported");
                        return -EOPNOTSUPP;
                }

                if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
                        MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
                                 match.key->flags & FLOW_DIS_IS_FRAGMENT);

                        /* the HW doesn't need L3 inline to match on frag=no */
                        if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
                                *match_level = MLX5_MATCH_L2;
        /* ***  L2 attributes parsing up to here *** */
                        else
                                *match_level = MLX5_MATCH_L3;
                }
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
                struct flow_match_basic match;

                flow_rule_match_basic(rule, &match);
                ip_proto = match.key->ip_proto;

                MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
                         match.mask->ip_proto);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                         match.key->ip_proto);

                if (match.mask->ip_proto)
                        *match_level = MLX5_MATCH_L3;
        }

        if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
                struct flow_match_ipv4_addrs match;

                flow_rule_match_ipv4_addrs(rule, &match);
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                    src_ipv4_src_ipv6.ipv4_layout.ipv4),
                       &match.mask->src, sizeof(match.mask->src));
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                    src_ipv4_src_ipv6.ipv4_layout.ipv4),
                       &match.key->src, sizeof(match.key->src));
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
                       &match.mask->dst, sizeof(match.mask->dst));
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                    dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
                       &match.key->dst, sizeof(match.key->dst));

                if (match.mask->src || match.mask->dst)
                        *match_level = MLX5_MATCH_L3;
        }

        if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
                struct flow_match_ipv6_addrs match;

                flow_rule_match_ipv6_addrs(rule, &match);
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                    src_ipv4_src_ipv6.ipv6_layout.ipv6),
                       &match.mask->src, sizeof(match.mask->src));
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                    src_ipv4_src_ipv6.ipv6_layout.ipv6),
                       &match.key->src, sizeof(match.key->src));

                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
                                    dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
                       &match.mask->dst, sizeof(match.mask->dst));
                memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
                                    dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
                       &match.key->dst, sizeof(match.key->dst));

                if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
                    ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
                        *match_level = MLX5_MATCH_L3;
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
                struct flow_match_ip match;

                flow_rule_match_ip(rule, &match);
                if (match_inner_ecn) {
                        MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
                                 match.mask->tos & 0x3);
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
                                 match.key->tos & 0x3);
                }

                MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
                         match.mask->tos >> 2);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
                         match.key->tos  >> 2);

                MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
                         match.mask->ttl);
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
                         match.key->ttl);

                if (match.mask->ttl &&
                    !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
                                                ft_field_support.outer_ipv4_ttl)) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "Matching on TTL is not supported");
                        return -EOPNOTSUPP;
                }

                if (match.mask->tos || match.mask->ttl)
                        *match_level = MLX5_MATCH_L3;
        }

        /* ***  L3 attributes parsing up to here *** */

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
                struct flow_match_ports match;

                flow_rule_match_ports(rule, &match);
                switch (ip_proto) {
                case IPPROTO_TCP:
                        MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                 tcp_sport, ntohs(match.mask->src));
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                 tcp_sport, ntohs(match.key->src));

                        MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                 tcp_dport, ntohs(match.mask->dst));
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                 tcp_dport, ntohs(match.key->dst));
                        break;

                case IPPROTO_UDP:
                        MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                 udp_sport, ntohs(match.mask->src));
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                 udp_sport, ntohs(match.key->src));

                        MLX5_SET(fte_match_set_lyr_2_4, headers_c,
                                 udp_dport, ntohs(match.mask->dst));
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v,
                                 udp_dport, ntohs(match.key->dst));
                        break;
                default:
                        NL_SET_ERR_MSG_MOD(extack,
                                           "Only UDP and TCP transports are supported for L4 matching");
                        netdev_err(priv->netdev,
                                   "Only UDP and TCP transport are supported\n");
                        return -EINVAL;
                }

                if (match.mask->src || match.mask->dst)
                        *match_level = MLX5_MATCH_L4;
        }

        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
                struct flow_match_tcp match;

                flow_rule_match_tcp(rule, &match);
                MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
                         ntohs(match.mask->flags));
                MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
                         ntohs(match.key->flags));

                if (match.mask->flags)
                        *match_level = MLX5_MATCH_L4;
        }
        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP)) {
                struct flow_match_icmp match;

                flow_rule_match_icmp(rule, &match);
                switch (ip_proto) {
                case IPPROTO_ICMP:
                        if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
                              MLX5_FLEX_PROTO_ICMP)) {
                                NL_SET_ERR_MSG_MOD(extack,
                                                   "Match on Flex protocols for ICMP is not supported");
                                return -EOPNOTSUPP;
                        }
                        MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_type,
                                 match.mask->type);
                        MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_type,
                                 match.key->type);
                        MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_code,
                                 match.mask->code);
                        MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_code,
                                 match.key->code);
                        break;
                case IPPROTO_ICMPV6:
                        if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
                              MLX5_FLEX_PROTO_ICMPV6)) {
                                NL_SET_ERR_MSG_MOD(extack,
                                                   "Match on Flex protocols for ICMPV6 is not supported");
                                return -EOPNOTSUPP;
                        }
                        MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_type,
                                 match.mask->type);
                        MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_type,
                                 match.key->type);
                        MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_code,
                                 match.mask->code);
                        MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_code,
                                 match.key->code);
                        break;
                default:
                        NL_SET_ERR_MSG_MOD(extack,
                                           "Code and type matching only with ICMP and ICMPv6");
                        netdev_err(priv->netdev,
                                   "Code and type matching only with ICMP and ICMPv6\n");
                        return -EINVAL;
                }
                if (match.mask->code || match.mask->type) {
                        *match_level = MLX5_MATCH_L4;
                        spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_3;
                }
        }
        /* Currently supported only for MPLS over UDP */
        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) &&
            !netif_is_bareudp(filter_dev)) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Matching on MPLS is supported only for MPLS over UDP");
                netdev_err(priv->netdev,
                           "Matching on MPLS is supported only for MPLS over UDP\n");
                return -EOPNOTSUPP;
        }

        return 0;
}

static int parse_cls_flower(struct mlx5e_priv *priv,
                            struct mlx5e_tc_flow *flow,
                            struct mlx5_flow_spec *spec,
                            struct flow_cls_offload *f,
                            struct net_device *filter_dev)
{
        u8 inner_match_level, outer_match_level, non_tunnel_match_level;
        struct netlink_ext_ack *extack = f->common.extack;
        struct mlx5_core_dev *dev = priv->mdev;
        struct mlx5_eswitch *esw = dev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep;
        bool is_eswitch_flow;
        int err;

        inner_match_level = MLX5_MATCH_NONE;
        outer_match_level = MLX5_MATCH_NONE;

        err = __parse_cls_flower(priv, flow, spec, f, filter_dev,
                                 &inner_match_level, &outer_match_level);
        non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
                                 outer_match_level : inner_match_level;

        is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
        if (!err && is_eswitch_flow) {
                rep = rpriv->rep;
                if (rep->vport != MLX5_VPORT_UPLINK &&
                    (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
                    esw->offloads.inline_mode < non_tunnel_match_level)) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "Flow is not offloaded due to min inline setting");
                        netdev_warn(priv->netdev,
                                    "Flow is not offloaded due to min inline setting, required %d actual %d\n",
                                    non_tunnel_match_level, esw->offloads.inline_mode);
                        return -EOPNOTSUPP;
                }
        }

        flow->attr->inner_match_level = inner_match_level;
        flow->attr->outer_match_level = outer_match_level;


        return err;
}

struct mlx5_fields {
        u8  field;
        u8  field_bsize;
        u32 field_mask;
        u32 offset;
        u32 match_offset;
};

#define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
                {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
                 offsetof(struct pedit_headers, field) + (off), \
                 MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}

/* masked values are the same and there are no rewrites that do not have a
 * match.
 */
#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
        type matchmaskx = *(type *)(matchmaskp); \
        type matchvalx = *(type *)(matchvalp); \
        type maskx = *(type *)(maskp); \
        type valx = *(type *)(valp); \
        \
        (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
                                                                 matchmaskx)); \
})

static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
                         void *matchmaskp, u8 bsize)
{
        bool same = false;

        switch (bsize) {
        case 8:
                same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
                break;
        case 16:
                same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
                break;
        case 32:
                same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
                break;
        }

        return same;
}

static struct mlx5_fields fields[] = {
        OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
        OFFLOAD(DMAC_15_0,  16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
        OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
        OFFLOAD(SMAC_15_0,  16, U16_MAX, eth.h_source[4], 0, smac_15_0),
        OFFLOAD(ETHERTYPE,  16, U16_MAX, eth.h_proto, 0, ethertype),
        OFFLOAD(FIRST_VID,  16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),

        OFFLOAD(IP_DSCP, 8,    0xfc, ip4.tos,   0, ip_dscp),
        OFFLOAD(IP_TTL,  8,  U8_MAX, ip4.ttl,   0, ttl_hoplimit),
        OFFLOAD(SIPV4,  32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
        OFFLOAD(DIPV4,  32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),

        OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
                src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
        OFFLOAD(SIPV6_95_64,  32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
                src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
        OFFLOAD(SIPV6_63_32,  32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
                src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
        OFFLOAD(SIPV6_31_0,   32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
                src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
        OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
                dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
        OFFLOAD(DIPV6_95_64,  32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
                dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
        OFFLOAD(DIPV6_63_32,  32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
                dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
        OFFLOAD(DIPV6_31_0,   32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
                dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
        OFFLOAD(IPV6_HOPLIMIT, 8,  U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
        OFFLOAD(IP_DSCP, 16,  0xc00f, ip6, 0, ip_dscp),

        OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source,  0, tcp_sport),
        OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest,    0, tcp_dport),
        /* in linux iphdr tcp_flags is 8 bits long */
        OFFLOAD(TCP_FLAGS,  8,  U8_MAX, tcp.ack_seq, 5, tcp_flags),

        OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
        OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest,   0, udp_dport),
};

static unsigned long mask_to_le(unsigned long mask, int size)
{
        __be32 mask_be32;
        __be16 mask_be16;

        if (size == 32) {
                mask_be32 = (__force __be32)(mask);
                mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
        } else if (size == 16) {
                mask_be32 = (__force __be32)(mask);
                mask_be16 = *(__be16 *)&mask_be32;
                mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
        }

        return mask;
}

static int offload_pedit_fields(struct mlx5e_priv *priv,
                                int namespace,
                                struct mlx5e_tc_flow_parse_attr *parse_attr,
                                u32 *action_flags,
                                struct netlink_ext_ack *extack)
{
        struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
        struct pedit_headers_action *hdrs = parse_attr->hdrs;
        void *headers_c, *headers_v, *action, *vals_p;
        u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
        struct mlx5e_tc_mod_hdr_acts *mod_acts;
        unsigned long mask, field_mask;
        int i, first, last, next_z;
        struct mlx5_fields *f;
        u8 cmd;

        mod_acts = &parse_attr->mod_hdr_acts;
        headers_c = mlx5e_get_match_headers_criteria(*action_flags, &parse_attr->spec);
        headers_v = mlx5e_get_match_headers_value(*action_flags, &parse_attr->spec);

        set_masks = &hdrs[0].masks;
        add_masks = &hdrs[1].masks;
        set_vals = &hdrs[0].vals;
        add_vals = &hdrs[1].vals;

        for (i = 0; i < ARRAY_SIZE(fields); i++) {
                bool skip;

                f = &fields[i];
                /* avoid seeing bits set from previous iterations */
                s_mask = 0;
                a_mask = 0;

                s_masks_p = (void *)set_masks + f->offset;
                a_masks_p = (void *)add_masks + f->offset;

                s_mask = *s_masks_p & f->field_mask;
                a_mask = *a_masks_p & f->field_mask;

                if (!s_mask && !a_mask) /* nothing to offload here */
                        continue;

                if (s_mask && a_mask) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "can't set and add to the same HW field");
                        netdev_warn(priv->netdev,
                                    "mlx5: can't set and add to the same HW field (%x)\n",
                                    f->field);
                        return -EOPNOTSUPP;
                }

                skip = false;
                if (s_mask) {
                        void *match_mask = headers_c + f->match_offset;
                        void *match_val = headers_v + f->match_offset;

                        cmd  = MLX5_ACTION_TYPE_SET;
                        mask = s_mask;
                        vals_p = (void *)set_vals + f->offset;
                        /* don't rewrite if we have a match on the same value */
                        if (cmp_val_mask(vals_p, s_masks_p, match_val,
                                         match_mask, f->field_bsize))
                                skip = true;
                        /* clear to denote we consumed this field */
                        *s_masks_p &= ~f->field_mask;
                } else {
                        cmd  = MLX5_ACTION_TYPE_ADD;
                        mask = a_mask;
                        vals_p = (void *)add_vals + f->offset;
                        /* add 0 is no change */
                        if ((*(u32 *)vals_p & f->field_mask) == 0)
                                skip = true;
                        /* clear to denote we consumed this field */
                        *a_masks_p &= ~f->field_mask;
                }
                if (skip)
                        continue;

                mask = mask_to_le(mask, f->field_bsize);

                first = find_first_bit(&mask, f->field_bsize);
                next_z = find_next_zero_bit(&mask, f->field_bsize, first);
                last  = find_last_bit(&mask, f->field_bsize);
                if (first < next_z && next_z < last) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "rewrite of few sub-fields isn't supported");
                        netdev_warn(priv->netdev,
                                    "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
                                    mask);
                        return -EOPNOTSUPP;
                }

                action = mlx5e_mod_hdr_alloc(priv->mdev, namespace, mod_acts);
                if (IS_ERR(action)) {
                        NL_SET_ERR_MSG_MOD(extack,
                                           "too many pedit actions, can't offload");
                        mlx5_core_warn(priv->mdev,
                                       "mlx5: parsed %d pedit actions, can't do more\n",
                                       mod_acts->num_actions);
                        return PTR_ERR(action);
                }

                MLX5_SET(set_action_in, action, action_type, cmd);
                MLX5_SET(set_action_in, action, field, f->field);

                if (cmd == MLX5_ACTION_TYPE_SET) {
                        int start;

                        field_mask = mask_to_le(f->field_mask, f->field_bsize);

                        /* if field is bit sized it can start not from first bit */
                        start = find_first_bit(&field_mask, f->field_bsize);

                        MLX5_SET(set_action_in, action, offset, first - start);
                        /* length is num of bits to be written, zero means length of 32 */
                        MLX5_SET(set_action_in, action, length, (last - first + 1));
                }

                if (f->field_bsize == 32)
                        MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
                else if (f->field_bsize == 16)
                        MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
                else if (f->field_bsize == 8)
                        MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);

                ++mod_acts->num_actions;
        }

        return 0;
}

static const struct pedit_headers zero_masks = {};

static int verify_offload_pedit_fields(struct mlx5e_priv *priv,
                                       struct mlx5e_tc_flow_parse_attr *parse_attr,
                                       struct netlink_ext_ack *extack)
{
        struct pedit_headers *cmd_masks;
        u8 cmd;

        for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
                cmd_masks = &parse_attr->hdrs[cmd].masks;
                if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
                        NL_SET_ERR_MSG_MOD(extack, "attempt to offload an unsupported field");
                        netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
                        print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
                                       16, 1, cmd_masks, sizeof(zero_masks), true);
                        return -EOPNOTSUPP;
                }
        }

        return 0;
}

static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
                                 u32 *action_flags,
                                 struct netlink_ext_ack *extack)
{
        int err;

        err = offload_pedit_fields(priv, namespace, parse_attr, action_flags, extack);
        if (err)
                goto out_dealloc_parsed_actions;

        err = verify_offload_pedit_fields(priv, parse_attr, extack);
        if (err)
                goto out_dealloc_parsed_actions;

        return 0;

out_dealloc_parsed_actions:
        mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
        return err;
}

struct ip_ttl_word {
        __u8    ttl;
        __u8    protocol;
        __sum16 check;
};

struct ipv6_hoplimit_word {
        __be16  payload_len;
        __u8    nexthdr;
        __u8    hop_limit;
};

static bool
is_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
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:
                attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
                attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
                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;
                attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
                attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
                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;
        bool is_missable;
        int err, i;

        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, 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;
                        }

                        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, 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_is_paired(esw_attr->in_mdev->priv.devcom,
                                                MLX5_DEVCOM_ESW_OFFLOADS);

        if (!esw_paired)
                return false;

        if ((mlx5_lag_is_sriov(esw_attr->in_mdev) ||
             mlx5_lag_is_multipath(esw_attr->in_mdev)) &&
            (is_rep_ingress || act_is_encap))
                return true;

        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);

        if (!attr)
                return;

        if (attr->post_act_handle)
                mlx5e_tc_post_act_del(get_post_action(flow->priv), attr->post_act_handle);

        clean_encap_dests(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);
        }

        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);
        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 mlx5e_priv *priv = flow->priv, *peer_priv;
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
        struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr;
        struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
        struct mlx5e_tc_flow_parse_attr *parse_attr;
        struct mlx5e_rep_priv *peer_urpriv;
        struct mlx5e_tc_flow *peer_flow;
        struct mlx5_core_dev *in_mdev;
        int err = 0;

        peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
        if (!peer_esw)
                return -ENODEV;

        peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
        peer_priv = netdev_priv(peer_urpriv->netdev);

        /* in_mdev is assigned of which the packet originated from.
         * So packets redirected to uplink use the same mdev of the
         * original flow and packets redirected from uplink use the
         * peer mdev.
         * 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;
        }

        flow->peer_flow = peer_flow;
        flow_flag_set(flow, DUP);
        mutex_lock(&esw->offloads.peer_mutex);
        list_add_tail(&flow->peer, &esw->offloads.peer_flows);
        mutex_unlock(&esw->offloads.peer_mutex);

out:
        mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
        return err;
}

static int
mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
                   struct flow_cls_offload *f,
                   unsigned long flow_flags,
                   struct net_device *filter_dev,
                   struct mlx5e_tc_flow **__flow)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *in_rep = rpriv->rep;
        struct mlx5_core_dev *in_mdev = priv->mdev;
        struct mlx5e_tc_flow *flow;
        int err;

        flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
                                    in_mdev);
        if (IS_ERR(flow))
                return PTR_ERR(flow);

        if (is_peer_flow_needed(flow)) {
                err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
                if (err) {
                        mlx5e_tc_del_fdb_flow(priv, flow);
                        goto out;
                }
        }

        *__flow = flow;

        return 0;

out:
        return err;
}

static int
mlx5e_add_nic_flow(struct mlx5e_priv *priv,
                   struct flow_cls_offload *f,
                   unsigned long flow_flags,
                   struct net_device *filter_dev,
                   struct mlx5e_tc_flow **__flow)
{
        struct flow_rule *rule = flow_cls_offload_flow_rule(f);
        struct netlink_ext_ack *extack = f->common.extack;
        struct mlx5e_tc_flow_parse_attr *parse_attr;
        struct mlx5e_tc_flow *flow;
        int attr_size, err;

        if (!MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) {
                if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
                        return -EOPNOTSUPP;
        } else if (!tc_can_offload_extack(priv->netdev, f->common.extack)) {
                return -EOPNOTSUPP;
        }

        flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
        attr_size  = sizeof(struct mlx5_nic_flow_attr);
        err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
                               &parse_attr, &flow);
        if (err)
                goto out;

        parse_attr->filter_dev = filter_dev;
        mlx5e_flow_attr_init(flow->attr, parse_attr, f);

        err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
                               f, filter_dev);
        if (err)
                goto err_free;

        err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
                                   &flow->attr->ct_attr, extack);
        if (err)
                goto err_free;

        err = parse_tc_nic_actions(priv, &rule->action, flow, extack);
        if (err)
                goto err_free;

        err = mlx5e_tc_add_nic_flow(priv, flow, extack);
        if (err)
                goto err_free;

        flow_flag_set(flow, OFFLOADED);
        *__flow = flow;

        return 0;

err_free:
        flow_flag_set(flow, FAILED);
        mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
        mlx5e_flow_put(priv, flow);
out:
        return err;
}

static int
mlx5e_tc_add_flow(struct mlx5e_priv *priv,
                  struct flow_cls_offload *f,
                  unsigned long flags,
                  struct net_device *filter_dev,
                  struct mlx5e_tc_flow **flow)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        unsigned long flow_flags;
        int err;

        get_flags(flags, &flow_flags);

        if (!tc_can_offload_extack(priv->netdev, f->common.extack))
                return -EOPNOTSUPP;

        if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
                err = mlx5e_add_fdb_flow(priv, f, flow_flags,
                                         filter_dev, flow);
        else
                err = mlx5e_add_nic_flow(priv, f, flow_flags,
                                         filter_dev, flow);

        return err;
}

static bool is_flow_rule_duplicate_allowed(struct net_device *dev,
                                           struct mlx5e_rep_priv *rpriv)
{
        /* Offloaded flow rule is allowed to duplicate on non-uplink representor
         * sharing tc block with other slaves of a lag device. Rpriv can be NULL if this
         * function is called from NIC mode.
         */
        return netif_is_lag_port(dev) && rpriv && rpriv->rep->vport != MLX5_VPORT_UPLINK;
}

int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
                           struct flow_cls_offload *f, unsigned long flags)
{
        struct netlink_ext_ack *extack = f->common.extack;
        struct rhashtable *tc_ht = get_tc_ht(priv, flags);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5e_tc_flow *flow;
        int err = 0;

        if (!mlx5_esw_hold(priv->mdev))
                return -EBUSY;

        mlx5_esw_get(priv->mdev);

        rcu_read_lock();
        flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
        if (flow) {
                /* Same flow rule offloaded to non-uplink representor sharing tc block,
                 * just return 0.
                 */
                if (is_flow_rule_duplicate_allowed(dev, rpriv) && flow->orig_dev != dev)
                        goto rcu_unlock;

                NL_SET_ERR_MSG_MOD(extack,
                                   "flow cookie already exists, ignoring");
                netdev_warn_once(priv->netdev,
                                 "flow cookie %lx already exists, ignoring\n",
                                 f->cookie);
                err = -EEXIST;
                goto rcu_unlock;
        }
rcu_unlock:
        rcu_read_unlock();
        if (flow)
                goto out;

        trace_mlx5e_configure_flower(f);
        err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
        if (err)
                goto out;

        /* Flow rule offloaded to non-uplink representor sharing tc block,
         * set the flow's owner dev.
         */
        if (is_flow_rule_duplicate_allowed(dev, rpriv))
                flow->orig_dev = dev;

        err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
        if (err)
                goto err_free;

        mlx5_esw_release(priv->mdev);
        return 0;

err_free:
        mlx5e_flow_put(priv, flow);
out:
        mlx5_esw_put(priv->mdev);
        mlx5_esw_release(priv->mdev);
        return err;
}

static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
{
        bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
        bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));

        return flow_flag_test(flow, INGRESS) == dir_ingress &&
                flow_flag_test(flow, EGRESS) == dir_egress;
}

int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
                        struct flow_cls_offload *f, unsigned long flags)
{
        struct rhashtable *tc_ht = get_tc_ht(priv, flags);
        struct mlx5e_tc_flow *flow;
        int err;

        rcu_read_lock();
        flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
        if (!flow || !same_flow_direction(flow, flags)) {
                err = -EINVAL;
                goto errout;
        }

        /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
         * set.
         */
        if (flow_flag_test_and_set(flow, DELETED)) {
                err = -EINVAL;
                goto errout;
        }
        rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
        rcu_read_unlock();

        trace_mlx5e_delete_flower(f);
        mlx5e_flow_put(priv, flow);

        mlx5_esw_put(priv->mdev);
        return 0;

errout:
        rcu_read_unlock();
        return err;
}

int mlx5e_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_devcom *devcom = priv->mdev->priv.devcom;
        struct rhashtable *tc_ht = get_tc_ht(priv, flags);
        struct mlx5_eswitch *peer_esw;
        struct mlx5e_tc_flow *flow;
        struct mlx5_fc *counter;
        u64 lastuse = 0;
        u64 packets = 0;
        u64 bytes = 0;
        int err = 0;

        rcu_read_lock();
        flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
                                                tc_ht_params));
        rcu_read_unlock();
        if (IS_ERR(flow))
                return PTR_ERR(flow);

        if (!same_flow_direction(flow, flags)) {
                err = -EINVAL;
                goto errout;
        }

        if (mlx5e_is_offloaded_flow(flow)) {
                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.
         */
        peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
        if (!peer_esw)
                goto out;

        if (flow_flag_test(flow, DUP) &&
            flow_flag_test(flow->peer_flow, OFFLOADED)) {
                u64 bytes2;
                u64 packets2;
                u64 lastuse2;

                if (flow_flag_test(flow, USE_ACT_STATS)) {
                        f->use_act_stats = true;
                } else {
                        counter = mlx5e_tc_get_counter(flow->peer_flow);
                        if (!counter)
                                goto no_peer_counter;
                        mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);

                        bytes += bytes2;
                        packets += packets2;
                        lastuse = max_t(u64, lastuse, lastuse2);
                }
        }

no_peer_counter:
        mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
out:
        flow_stats_update(&f->stats, bytes, packets, 0, lastuse,
                          FLOW_ACTION_HW_STATS_DELAYED);
        trace_mlx5e_stats_flower(f);
errout:
        mlx5e_flow_put(priv, flow);
        return err;
}

static int apply_police_params(struct mlx5e_priv *priv, u64 rate,
                               struct netlink_ext_ack *extack)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch *esw;
        u32 rate_mbps = 0;
        u16 vport_num;
        int err;

        vport_num = rpriv->rep->vport;
        if (vport_num >= MLX5_VPORT_ECPF) {
                NL_SET_ERR_MSG_MOD(extack,
                                   "Ingress rate limit is supported only for Eswitch ports connected to VFs");
                return -EOPNOTSUPP;
        }

        esw = priv->mdev->priv.eswitch;
        /* rate is given in bytes/sec.
         * First convert to bits/sec and then round to the nearest mbit/secs.
         * mbit means million bits.
         * Moreover, if rate is non zero we choose to configure to a minimum of
         * 1 mbit/sec.
         */
        if (rate) {
                rate = (rate * BITS_PER_BYTE) + 500000;
                do_div(rate, 1000000);
                rate_mbps = max_t(u32, rate, 1);
        }

        err = mlx5_esw_qos_modify_vport_rate(esw, vport_num, rate_mbps);
        if (err)
                NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");

        return err;
}

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;

                        rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
                        break;
                default:
                        NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
                        return -EOPNOTSUPP;
                }
        }

        return 0;
}

int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
                                struct tc_cls_matchall_offload *ma)
{
        struct netlink_ext_ack *extack = ma->common.extack;

        if (ma->common.prio != 1) {
                NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
                return -EINVAL;
        }

        return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
}

int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
                             struct tc_cls_matchall_offload *ma)
{
        struct netlink_ext_ack *extack = ma->common.extack;

        return apply_police_params(priv, 0, extack);
}

void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
                             struct tc_cls_matchall_offload *ma)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct rtnl_link_stats64 cur_stats;
        u64 dbytes;
        u64 dpkts;

        cur_stats = priv->stats.vf_vport;
        dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
        dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
        rpriv->prev_vf_vport_stats = cur_stats;
        flow_stats_update(&ma->stats, dbytes, dpkts, 0, jiffies,
                          FLOW_ACTION_HW_STATS_DELAYED);
}

static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
                                              struct mlx5e_priv *peer_priv)
{
        struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
        struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
        struct mlx5e_hairpin_entry *hpe, *tmp;
        LIST_HEAD(init_wait_list);
        u16 peer_vhca_id;
        int bkt;

        if (!mlx5e_same_hw_devs(priv, peer_priv))
                return;

        peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);

        mutex_lock(&tc->hairpin_tbl_lock);
        hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist)
                if (refcount_inc_not_zero(&hpe->refcnt))
                        list_add(&hpe->dead_peer_wait_list, &init_wait_list);
        mutex_unlock(&tc->hairpin_tbl_lock);

        list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
                wait_for_completion(&hpe->res_ready);
                if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
                        mlx5_core_hairpin_clear_dead_peer(hpe->hp->pair);

                mlx5e_hairpin_put(priv, hpe);
        }
}

static int mlx5e_tc_netdev_event(struct notifier_block *this,
                                 unsigned long event, void *ptr)
{
        struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
        struct mlx5e_priv *peer_priv;
        struct mlx5e_tc_table *tc;
        struct mlx5e_priv *priv;

        if (ndev->netdev_ops != &mlx5e_netdev_ops ||
            event != NETDEV_UNREGISTER ||
            ndev->reg_state == NETREG_REGISTERED)
                return NOTIFY_DONE;

        tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
        priv = tc->priv;
        peer_priv = netdev_priv(ndev);
        if (priv == peer_priv ||
            !(priv->netdev->features & NETIF_F_HW_TC))
                return NOTIFY_DONE;

        mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);

        return NOTIFY_DONE;
}

static int mlx5e_tc_nic_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 mlx5e_rep_priv *rpriv;
        struct mapping_ctx *mapping;
        struct mlx5_eswitch *esw;
        struct mlx5e_priv *priv;
        u64 mapping_id;
        int err = 0;

        rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv);
        priv = netdev_priv(rpriv->netdev);
        esw = priv->mdev->priv.eswitch;

        uplink_priv->post_act = mlx5e_tc_post_act_init(priv, esw_chains(esw),
                                                       MLX5_FLOW_NAMESPACE_FDB);
        uplink_priv->ct_priv = mlx5_tc_ct_init(netdev_priv(priv->netdev),
                                               esw_chains(esw),
                                               &esw->offloads.mod_hdr,
                                               MLX5_FLOW_NAMESPACE_FDB,
                                               uplink_priv->post_act);

        uplink_priv->int_port_priv = mlx5e_tc_int_port_init(netdev_priv(priv->netdev));

        uplink_priv->tc_psample = mlx5e_tc_sample_init(esw, uplink_priv->post_act);

        mapping_id = mlx5_query_nic_system_image_guid(esw->dev);

        mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL,
                                        sizeof(struct tunnel_match_key),
                                        TUNNEL_INFO_BITS_MASK, true);

        if (IS_ERR(mapping)) {
                err = PTR_ERR(mapping);
                goto err_tun_mapping;
        }
        uplink_priv->tunnel_mapping = mapping;

        /* Two last values are reserved for stack devices slow path table mark
         * and bridge ingress push mark.
         */
        mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL_ENC_OPTS,
                                        sz_enc_opts, ENC_OPTS_BITS_MASK - 2, true);
        if (IS_ERR(mapping)) {
                err = PTR_ERR(mapping);
                goto err_enc_opts_mapping;
        }
        uplink_priv->tunnel_enc_opts_mapping = mapping;

        uplink_priv->encap = mlx5e_tc_tun_init(priv);
        if (IS_ERR(uplink_priv->encap)) {
                err = PTR_ERR(uplink_priv->encap);
                goto err_register_fib_notifier;
        }

        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;
        }

        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;

        mlx5e_tc_clean_fdb_peer_flows(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;

        list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
                __mlx5e_tc_del_fdb_peer_flow(flow);
}

void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
{
        struct mlx5_rep_uplink_priv *rpriv =
                container_of(work, struct mlx5_rep_uplink_priv,
                             reoffload_flows_work);
        struct mlx5e_tc_flow *flow, *tmp;

        mutex_lock(&rpriv->unready_flows_lock);
        list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
                if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
                        unready_flow_del(flow);
        }
        mutex_unlock(&rpriv->unready_flows_lock);
}

static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
                                     struct flow_cls_offload *cls_flower,
                                     unsigned long flags)
{
        switch (cls_flower->command) {
        case FLOW_CLS_REPLACE:
                return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
                                              flags);
        case FLOW_CLS_DESTROY:
                return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
                                           flags);
        case FLOW_CLS_STATS:
                return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
                                          flags);
        default:
                return -EOPNOTSUPP;
        }
}

int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
                            void *cb_priv)
{
        unsigned long flags = MLX5_TC_FLAG(INGRESS);
        struct mlx5e_priv *priv = cb_priv;

        if (!priv->netdev || !netif_device_present(priv->netdev))
                return -EOPNOTSUPP;

        if (mlx5e_is_uplink_rep(priv))
                flags |= MLX5_TC_FLAG(ESW_OFFLOAD);
        else
                flags |= MLX5_TC_FLAG(NIC_OFFLOAD);

        switch (type) {
        case TC_SETUP_CLSFLOWER:
                return mlx5e_setup_tc_cls_flower(priv, type_data, flags);
        default:
                return -EOPNOTSUPP;
        }
}

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);
}

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_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5_mapped_obj mapped_obj = {};
        struct mapping_ctx *ctx;
        int err;

        ctx = esw->offloads.reg_c0_obj_pool;

        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;

        attr->act_id_restore_rule = esw_add_restore_rule(esw, *act_miss_mapping);
        if (IS_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 mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mapping_ctx *ctx;

        ctx = esw->offloads.reg_c0_obj_pool;
        mlx5_del_flow_rules(attr->act_id_restore_rule);
        mapping_remove(ctx, act_miss_mapping);
}