// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include <linux/mutex.h>
#include <trace/events/mlxsw.h>

#include "reg.h"
#include "core.h"
#include "resources.h"
#include "spectrum.h"
#include "spectrum_acl_tcam.h"
#include "core_acl_flex_keys.h"

size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        return ops->priv_size;
}

#define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT 5000 /* ms */
#define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN 3000 /* ms */
#define MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS 100 /* number of entries */

int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
                           struct mlxsw_sp_acl_tcam *tcam)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        u64 max_tcam_regions;
        u64 max_regions;
        u64 max_groups;
        size_t alloc_size;
        int err;

        mutex_init(&tcam->lock);
        tcam->vregion_rehash_intrvl =
                        MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
        INIT_LIST_HEAD(&tcam->vregion_list);

        max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
                                              ACL_MAX_TCAM_REGIONS);
        max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);

        /* Use 1:1 mapping between ACL region and TCAM region */
        if (max_tcam_regions < max_regions)
                max_regions = max_tcam_regions;

        alloc_size = sizeof(tcam->used_regions[0]) * BITS_TO_LONGS(max_regions);
        tcam->used_regions = kzalloc(alloc_size, GFP_KERNEL);
        if (!tcam->used_regions)
                return -ENOMEM;
        tcam->max_regions = max_regions;

        max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
        alloc_size = sizeof(tcam->used_groups[0]) * BITS_TO_LONGS(max_groups);
        tcam->used_groups = kzalloc(alloc_size, GFP_KERNEL);
        if (!tcam->used_groups) {
                err = -ENOMEM;
                goto err_alloc_used_groups;
        }
        tcam->max_groups = max_groups;
        tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
                                                 ACL_MAX_GROUP_SIZE);

        err = ops->init(mlxsw_sp, tcam->priv, tcam);
        if (err)
                goto err_tcam_init;

        return 0;

err_tcam_init:
        kfree(tcam->used_groups);
err_alloc_used_groups:
        kfree(tcam->used_regions);
        return err;
}

void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
                            struct mlxsw_sp_acl_tcam *tcam)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        mutex_destroy(&tcam->lock);
        ops->fini(mlxsw_sp, tcam->priv);
        kfree(tcam->used_groups);
        kfree(tcam->used_regions);
}

int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
                                   struct mlxsw_sp_acl_rule_info *rulei,
                                   u32 *priority, bool fillup_priority)
{
        u64 max_priority;

        if (!fillup_priority) {
                *priority = 0;
                return 0;
        }

        if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, KVD_SIZE))
                return -EIO;

        /* Priority range is 1..cap_kvd_size-1. */
        max_priority = MLXSW_CORE_RES_GET(mlxsw_sp->core, KVD_SIZE) - 1;
        if (rulei->priority >= max_priority)
                return -EINVAL;

        /* Unlike in TC, in HW, higher number means higher priority. */
        *priority = max_priority - rulei->priority;
        return 0;
}

static int mlxsw_sp_acl_tcam_region_id_get(struct mlxsw_sp_acl_tcam *tcam,
                                           u16 *p_id)
{
        u16 id;

        id = find_first_zero_bit(tcam->used_regions, tcam->max_regions);
        if (id < tcam->max_regions) {
                __set_bit(id, tcam->used_regions);
                *p_id = id;
                return 0;
        }
        return -ENOBUFS;
}

static void mlxsw_sp_acl_tcam_region_id_put(struct mlxsw_sp_acl_tcam *tcam,
                                            u16 id)
{
        __clear_bit(id, tcam->used_regions);
}

static int mlxsw_sp_acl_tcam_group_id_get(struct mlxsw_sp_acl_tcam *tcam,
                                          u16 *p_id)
{
        u16 id;

        id = find_first_zero_bit(tcam->used_groups, tcam->max_groups);
        if (id < tcam->max_groups) {
                __set_bit(id, tcam->used_groups);
                *p_id = id;
                return 0;
        }
        return -ENOBUFS;
}

static void mlxsw_sp_acl_tcam_group_id_put(struct mlxsw_sp_acl_tcam *tcam,
                                           u16 id)
{
        __clear_bit(id, tcam->used_groups);
}

struct mlxsw_sp_acl_tcam_pattern {
        const enum mlxsw_afk_element *elements;
        unsigned int elements_count;
};

struct mlxsw_sp_acl_tcam_group {
        struct mlxsw_sp_acl_tcam *tcam;
        u16 id;
        struct mutex lock; /* guards region list updates */
        struct list_head region_list;
        unsigned int region_count;
};

struct mlxsw_sp_acl_tcam_vgroup {
        struct mlxsw_sp_acl_tcam_group group;
        struct list_head vregion_list;
        struct rhashtable vchunk_ht;
        const struct mlxsw_sp_acl_tcam_pattern *patterns;
        unsigned int patterns_count;
        bool tmplt_elusage_set;
        struct mlxsw_afk_element_usage tmplt_elusage;
        bool vregion_rehash_enabled;
};

struct mlxsw_sp_acl_tcam_rehash_ctx {
        void *hints_priv;
        bool this_is_rollback;
        struct mlxsw_sp_acl_tcam_vchunk *current_vchunk; /* vchunk being
                                                          * currently migrated.
                                                          */
        struct mlxsw_sp_acl_tcam_ventry *start_ventry; /* ventry to start
                                                        * migration from in
                                                        * a vchunk being
                                                        * currently migrated.
                                                        */
        struct mlxsw_sp_acl_tcam_ventry *stop_ventry; /* ventry to stop
                                                       * migration at
                                                       * a vchunk being
                                                       * currently migrated.
                                                       */
};

struct mlxsw_sp_acl_tcam_vregion {
        struct mutex lock; /* Protects consistency of region, region2 pointers
                            * and vchunk_list.
                            */
        struct mlxsw_sp_acl_tcam_region *region;
        struct mlxsw_sp_acl_tcam_region *region2; /* Used during migration */
        struct list_head list; /* Member of a TCAM group */
        struct list_head tlist; /* Member of a TCAM */
        struct list_head vchunk_list; /* List of vchunks under this vregion */
        struct mlxsw_afk_key_info *key_info;
        struct mlxsw_sp_acl_tcam *tcam;
        struct mlxsw_sp_acl_tcam_vgroup *vgroup;
        struct {
                struct delayed_work dw;
                struct mlxsw_sp_acl_tcam_rehash_ctx ctx;
        } rehash;
        struct mlxsw_sp *mlxsw_sp;
        unsigned int ref_count;
};

struct mlxsw_sp_acl_tcam_vchunk;

struct mlxsw_sp_acl_tcam_chunk {
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        struct mlxsw_sp_acl_tcam_region *region;
        unsigned long priv[0];
        /* priv has to be always the last item */
};

struct mlxsw_sp_acl_tcam_vchunk {
        struct mlxsw_sp_acl_tcam_chunk *chunk;
        struct mlxsw_sp_acl_tcam_chunk *chunk2; /* Used during migration */
        struct list_head list; /* Member of a TCAM vregion */
        struct rhash_head ht_node; /* Member of a chunk HT */
        struct list_head ventry_list;
        unsigned int priority; /* Priority within the vregion and group */
        struct mlxsw_sp_acl_tcam_vgroup *vgroup;
        struct mlxsw_sp_acl_tcam_vregion *vregion;
        unsigned int ref_count;
};

struct mlxsw_sp_acl_tcam_entry {
        struct mlxsw_sp_acl_tcam_ventry *ventry;
        struct mlxsw_sp_acl_tcam_chunk *chunk;
        unsigned long priv[0];
        /* priv has to be always the last item */
};

struct mlxsw_sp_acl_tcam_ventry {
        struct mlxsw_sp_acl_tcam_entry *entry;
        struct list_head list; /* Member of a TCAM vchunk */
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        struct mlxsw_sp_acl_rule_info *rulei;
};

static const struct rhashtable_params mlxsw_sp_acl_tcam_vchunk_ht_params = {
        .key_len = sizeof(unsigned int),
        .key_offset = offsetof(struct mlxsw_sp_acl_tcam_vchunk, priority),
        .head_offset = offsetof(struct mlxsw_sp_acl_tcam_vchunk, ht_node),
        .automatic_shrinking = true,
};

static int mlxsw_sp_acl_tcam_group_update(struct mlxsw_sp *mlxsw_sp,
                                          struct mlxsw_sp_acl_tcam_group *group)
{
        struct mlxsw_sp_acl_tcam_region *region;
        char pagt_pl[MLXSW_REG_PAGT_LEN];
        int acl_index = 0;

        mlxsw_reg_pagt_pack(pagt_pl, group->id);
        list_for_each_entry(region, &group->region_list, list) {
                bool multi = false;

                /* Check if the next entry in the list has the same vregion. */
                if (region->list.next != &group->region_list &&
                    list_next_entry(region, list)->vregion == region->vregion)
                        multi = true;
                mlxsw_reg_pagt_acl_id_pack(pagt_pl, acl_index++,
                                           region->id, multi);
        }
        mlxsw_reg_pagt_size_set(pagt_pl, acl_index);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pagt), pagt_pl);
}

static int
mlxsw_sp_acl_tcam_group_add(struct mlxsw_sp_acl_tcam *tcam,
                            struct mlxsw_sp_acl_tcam_group *group)
{
        int err;

        group->tcam = tcam;
        mutex_init(&group->lock);
        INIT_LIST_HEAD(&group->region_list);

        err = mlxsw_sp_acl_tcam_group_id_get(tcam, &group->id);
        if (err)
                return err;

        return 0;
}

static void mlxsw_sp_acl_tcam_group_del(struct mlxsw_sp_acl_tcam_group *group)
{
        struct mlxsw_sp_acl_tcam *tcam = group->tcam;

        mutex_destroy(&group->lock);
        mlxsw_sp_acl_tcam_group_id_put(tcam, group->id);
        WARN_ON(!list_empty(&group->region_list));
}

static int
mlxsw_sp_acl_tcam_vgroup_add(struct mlxsw_sp *mlxsw_sp,
                             struct mlxsw_sp_acl_tcam *tcam,
                             struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                             const struct mlxsw_sp_acl_tcam_pattern *patterns,
                             unsigned int patterns_count,
                             struct mlxsw_afk_element_usage *tmplt_elusage,
                             bool vregion_rehash_enabled)
{
        int err;

        vgroup->patterns = patterns;
        vgroup->patterns_count = patterns_count;
        vgroup->vregion_rehash_enabled = vregion_rehash_enabled;

        if (tmplt_elusage) {
                vgroup->tmplt_elusage_set = true;
                memcpy(&vgroup->tmplt_elusage, tmplt_elusage,
                       sizeof(vgroup->tmplt_elusage));
        }
        INIT_LIST_HEAD(&vgroup->vregion_list);

        err = mlxsw_sp_acl_tcam_group_add(tcam, &vgroup->group);
        if (err)
                return err;

        err = rhashtable_init(&vgroup->vchunk_ht,
                              &mlxsw_sp_acl_tcam_vchunk_ht_params);
        if (err)
                goto err_rhashtable_init;

        return 0;

err_rhashtable_init:
        mlxsw_sp_acl_tcam_group_del(&vgroup->group);
        return err;
}

static void
mlxsw_sp_acl_tcam_vgroup_del(struct mlxsw_sp_acl_tcam_vgroup *vgroup)
{
        rhashtable_destroy(&vgroup->vchunk_ht);
        mlxsw_sp_acl_tcam_group_del(&vgroup->group);
        WARN_ON(!list_empty(&vgroup->vregion_list));
}

static int
mlxsw_sp_acl_tcam_group_bind(struct mlxsw_sp *mlxsw_sp,
                             struct mlxsw_sp_acl_tcam_group *group,
                             struct mlxsw_sp_port *mlxsw_sp_port,
                             bool ingress)
{
        char ppbt_pl[MLXSW_REG_PPBT_LEN];

        mlxsw_reg_ppbt_pack(ppbt_pl, ingress ? MLXSW_REG_PXBT_E_IACL :
                                               MLXSW_REG_PXBT_E_EACL,
                            MLXSW_REG_PXBT_OP_BIND, mlxsw_sp_port->local_port,
                            group->id);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl);
}

static void
mlxsw_sp_acl_tcam_group_unbind(struct mlxsw_sp *mlxsw_sp,
                               struct mlxsw_sp_acl_tcam_group *group,
                               struct mlxsw_sp_port *mlxsw_sp_port,
                               bool ingress)
{
        char ppbt_pl[MLXSW_REG_PPBT_LEN];

        mlxsw_reg_ppbt_pack(ppbt_pl, ingress ? MLXSW_REG_PXBT_E_IACL :
                                               MLXSW_REG_PXBT_E_EACL,
                            MLXSW_REG_PXBT_OP_UNBIND, mlxsw_sp_port->local_port,
                            group->id);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbt), ppbt_pl);
}

static u16
mlxsw_sp_acl_tcam_group_id(struct mlxsw_sp_acl_tcam_group *group)
{
        return group->id;
}

static unsigned int
mlxsw_sp_acl_tcam_vregion_prio(struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;

        if (list_empty(&vregion->vchunk_list))
                return 0;
        /* As a priority of a vregion, return priority of the first vchunk */
        vchunk = list_first_entry(&vregion->vchunk_list,
                                  typeof(*vchunk), list);
        return vchunk->priority;
}

static unsigned int
mlxsw_sp_acl_tcam_vregion_max_prio(struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;

        if (list_empty(&vregion->vchunk_list))
                return 0;
        vchunk = list_last_entry(&vregion->vchunk_list,
                                 typeof(*vchunk), list);
        return vchunk->priority;
}

static int
mlxsw_sp_acl_tcam_group_region_attach(struct mlxsw_sp *mlxsw_sp,
                                      struct mlxsw_sp_acl_tcam_group *group,
                                      struct mlxsw_sp_acl_tcam_region *region,
                                      unsigned int priority,
                                      struct mlxsw_sp_acl_tcam_region *next_region)
{
        struct mlxsw_sp_acl_tcam_region *region2;
        struct list_head *pos;
        int err;

        mutex_lock(&group->lock);
        if (group->region_count == group->tcam->max_group_size) {
                err = -ENOBUFS;
                goto err_region_count_check;
        }

        if (next_region) {
                /* If the next region is defined, place the new one
                 * before it. The next one is a sibling.
                 */
                pos = &next_region->list;
        } else {
                /* Position the region inside the list according to priority */
                list_for_each(pos, &group->region_list) {
                        region2 = list_entry(pos, typeof(*region2), list);
                        if (mlxsw_sp_acl_tcam_vregion_prio(region2->vregion) >
                            priority)
                                break;
                }
        }
        list_add_tail(&region->list, pos);
        region->group = group;

        err = mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
        if (err)
                goto err_group_update;

        group->region_count++;
        mutex_unlock(&group->lock);
        return 0;

err_group_update:
        list_del(&region->list);
err_region_count_check:
        mutex_unlock(&group->lock);
        return err;
}

static void
mlxsw_sp_acl_tcam_group_region_detach(struct mlxsw_sp *mlxsw_sp,
                                      struct mlxsw_sp_acl_tcam_region *region)
{
        struct mlxsw_sp_acl_tcam_group *group = region->group;

        mutex_lock(&group->lock);
        list_del(&region->list);
        group->region_count--;
        mlxsw_sp_acl_tcam_group_update(mlxsw_sp, group);
        mutex_unlock(&group->lock);
}

static int
mlxsw_sp_acl_tcam_vgroup_vregion_attach(struct mlxsw_sp *mlxsw_sp,
                                        struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                        struct mlxsw_sp_acl_tcam_vregion *vregion,
                                        unsigned int priority)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion2;
        struct list_head *pos;
        int err;

        /* Position the vregion inside the list according to priority */
        list_for_each(pos, &vgroup->vregion_list) {
                vregion2 = list_entry(pos, typeof(*vregion2), list);
                if (mlxsw_sp_acl_tcam_vregion_prio(vregion2) > priority)
                        break;
        }
        list_add_tail(&vregion->list, pos);

        err = mlxsw_sp_acl_tcam_group_region_attach(mlxsw_sp, &vgroup->group,
                                                    vregion->region,
                                                    priority, NULL);
        if (err)
                goto err_region_attach;

        return 0;

err_region_attach:
        list_del(&vregion->list);
        return err;
}

static void
mlxsw_sp_acl_tcam_vgroup_vregion_detach(struct mlxsw_sp *mlxsw_sp,
                                        struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        list_del(&vregion->list);
        if (vregion->region2)
                mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp,
                                                      vregion->region2);
        mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, vregion->region);
}

static struct mlxsw_sp_acl_tcam_vregion *
mlxsw_sp_acl_tcam_vgroup_vregion_find(struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                      unsigned int priority,
                                      struct mlxsw_afk_element_usage *elusage,
                                      bool *p_need_split)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion, *vregion2;
        struct list_head *pos;
        bool issubset;

        list_for_each(pos, &vgroup->vregion_list) {
                vregion = list_entry(pos, typeof(*vregion), list);

                /* First, check if the requested priority does not rather belong
                 * under some of the next vregions.
                 */
                if (pos->next != &vgroup->vregion_list) { /* not last */
                        vregion2 = list_entry(pos->next, typeof(*vregion2),
                                              list);
                        if (priority >=
                            mlxsw_sp_acl_tcam_vregion_prio(vregion2))
                                continue;
                }

                issubset = mlxsw_afk_key_info_subset(vregion->key_info,
                                                     elusage);

                /* If requested element usage would not fit and the priority
                 * is lower than the currently inspected vregion we cannot
                 * use this region, so return NULL to indicate new vregion has
                 * to be created.
                 */
                if (!issubset &&
                    priority < mlxsw_sp_acl_tcam_vregion_prio(vregion))
                        return NULL;

                /* If requested element usage would not fit and the priority
                 * is higher than the currently inspected vregion we cannot
                 * use this vregion. There is still some hope that the next
                 * vregion would be the fit. So let it be processed and
                 * eventually break at the check right above this.
                 */
                if (!issubset &&
                    priority > mlxsw_sp_acl_tcam_vregion_max_prio(vregion))
                        continue;

                /* Indicate if the vregion needs to be split in order to add
                 * the requested priority. Split is needed when requested
                 * element usage won't fit into the found vregion.
                 */
                *p_need_split = !issubset;
                return vregion;
        }
        return NULL; /* New vregion has to be created. */
}

static void
mlxsw_sp_acl_tcam_vgroup_use_patterns(struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                      struct mlxsw_afk_element_usage *elusage,
                                      struct mlxsw_afk_element_usage *out)
{
        const struct mlxsw_sp_acl_tcam_pattern *pattern;
        int i;

        /* In case the template is set, we don't have to look up the pattern
         * and just use the template.
         */
        if (vgroup->tmplt_elusage_set) {
                memcpy(out, &vgroup->tmplt_elusage, sizeof(*out));
                WARN_ON(!mlxsw_afk_element_usage_subset(elusage, out));
                return;
        }

        for (i = 0; i < vgroup->patterns_count; i++) {
                pattern = &vgroup->patterns[i];
                mlxsw_afk_element_usage_fill(out, pattern->elements,
                                             pattern->elements_count);
                if (mlxsw_afk_element_usage_subset(elusage, out))
                        return;
        }
        memcpy(out, elusage, sizeof(*out));
}

static int
mlxsw_sp_acl_tcam_region_alloc(struct mlxsw_sp *mlxsw_sp,
                               struct mlxsw_sp_acl_tcam_region *region)
{
        struct mlxsw_afk_key_info *key_info = region->key_info;
        char ptar_pl[MLXSW_REG_PTAR_LEN];
        unsigned int encodings_count;
        int i;
        int err;

        mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_ALLOC,
                            region->key_type,
                            MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT,
                            region->id, region->tcam_region_info);
        encodings_count = mlxsw_afk_key_info_blocks_count_get(key_info);
        for (i = 0; i < encodings_count; i++) {
                u16 encoding;

                encoding = mlxsw_afk_key_info_block_encoding_get(key_info, i);
                mlxsw_reg_ptar_key_id_pack(ptar_pl, i, encoding);
        }
        err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
        if (err)
                return err;
        mlxsw_reg_ptar_unpack(ptar_pl, region->tcam_region_info);
        return 0;
}

static void
mlxsw_sp_acl_tcam_region_free(struct mlxsw_sp *mlxsw_sp,
                              struct mlxsw_sp_acl_tcam_region *region)
{
        char ptar_pl[MLXSW_REG_PTAR_LEN];

        mlxsw_reg_ptar_pack(ptar_pl, MLXSW_REG_PTAR_OP_FREE,
                            region->key_type, 0, region->id,
                            region->tcam_region_info);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ptar), ptar_pl);
}

static int
mlxsw_sp_acl_tcam_region_enable(struct mlxsw_sp *mlxsw_sp,
                                struct mlxsw_sp_acl_tcam_region *region)
{
        char pacl_pl[MLXSW_REG_PACL_LEN];

        mlxsw_reg_pacl_pack(pacl_pl, region->id, true,
                            region->tcam_region_info);
        return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl);
}

static void
mlxsw_sp_acl_tcam_region_disable(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_region *region)
{
        char pacl_pl[MLXSW_REG_PACL_LEN];

        mlxsw_reg_pacl_pack(pacl_pl, region->id, false,
                            region->tcam_region_info);
        mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pacl), pacl_pl);
}

static struct mlxsw_sp_acl_tcam_region *
mlxsw_sp_acl_tcam_region_create(struct mlxsw_sp *mlxsw_sp,
                                struct mlxsw_sp_acl_tcam *tcam,
                                struct mlxsw_sp_acl_tcam_vregion *vregion,
                                void *hints_priv)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_sp_acl_tcam_region *region;
        int err;

        region = kzalloc(sizeof(*region) + ops->region_priv_size, GFP_KERNEL);
        if (!region)
                return ERR_PTR(-ENOMEM);
        region->mlxsw_sp = mlxsw_sp;
        region->vregion = vregion;
        region->key_info = vregion->key_info;

        err = mlxsw_sp_acl_tcam_region_id_get(tcam, &region->id);
        if (err)
                goto err_region_id_get;

        err = ops->region_associate(mlxsw_sp, region);
        if (err)
                goto err_tcam_region_associate;

        region->key_type = ops->key_type;
        err = mlxsw_sp_acl_tcam_region_alloc(mlxsw_sp, region);
        if (err)
                goto err_tcam_region_alloc;

        err = mlxsw_sp_acl_tcam_region_enable(mlxsw_sp, region);
        if (err)
                goto err_tcam_region_enable;

        err = ops->region_init(mlxsw_sp, region->priv, tcam->priv,
                               region, hints_priv);
        if (err)
                goto err_tcam_region_init;

        return region;

err_tcam_region_init:
        mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region);
err_tcam_region_enable:
        mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region);
err_tcam_region_alloc:
err_tcam_region_associate:
        mlxsw_sp_acl_tcam_region_id_put(tcam, region->id);
err_region_id_get:
        kfree(region);
        return ERR_PTR(err);
}

static void
mlxsw_sp_acl_tcam_region_destroy(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_region *region)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        ops->region_fini(mlxsw_sp, region->priv);
        mlxsw_sp_acl_tcam_region_disable(mlxsw_sp, region);
        mlxsw_sp_acl_tcam_region_free(mlxsw_sp, region);
        mlxsw_sp_acl_tcam_region_id_put(region->group->tcam,
                                        region->id);
        kfree(region);
}

static void
mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        unsigned long interval = vregion->tcam->vregion_rehash_intrvl;

        if (!interval)
                return;
        mlxsw_core_schedule_dw(&vregion->rehash.dw,
                               msecs_to_jiffies(interval));
}

static void
mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_vregion *vregion,
                                 int *credits);

static void mlxsw_sp_acl_tcam_vregion_rehash_work(struct work_struct *work)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion =
                container_of(work, struct mlxsw_sp_acl_tcam_vregion,
                             rehash.dw.work);
        int credits = MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS;

        mlxsw_sp_acl_tcam_vregion_rehash(vregion->mlxsw_sp, vregion, &credits);
        if (credits < 0)
                /* Rehash gone out of credits so it was interrupted.
                 * Schedule the work as soon as possible to continue.
                 */
                mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
        else
                mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(vregion);
}

static void
mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(struct mlxsw_sp_acl_tcam_vchunk *vchunk)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion;

        /* If a rule was added or deleted from vchunk which is currently
         * under rehash migration, we have to reset the ventry pointers
         * to make sure all rules are properly migrated.
         */
        if (vregion->rehash.ctx.current_vchunk == vchunk) {
                vregion->rehash.ctx.start_ventry = NULL;
                vregion->rehash.ctx.stop_ventry = NULL;
        }
}

static void
mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        /* If a chunk was added or deleted from vregion we have to reset
         * the current chunk pointer to make sure all chunks
         * are properly migrated.
         */
        vregion->rehash.ctx.current_vchunk = NULL;
}

static struct mlxsw_sp_acl_tcam_vregion *
mlxsw_sp_acl_tcam_vregion_create(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                 unsigned int priority,
                                 struct mlxsw_afk_element_usage *elusage)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_afk *afk = mlxsw_sp_acl_afk(mlxsw_sp->acl);
        struct mlxsw_sp_acl_tcam *tcam = vgroup->group.tcam;
        struct mlxsw_sp_acl_tcam_vregion *vregion;
        int err;

        vregion = kzalloc(sizeof(*vregion), GFP_KERNEL);
        if (!vregion)
                return ERR_PTR(-ENOMEM);
        INIT_LIST_HEAD(&vregion->vchunk_list);
        mutex_init(&vregion->lock);
        vregion->tcam = tcam;
        vregion->mlxsw_sp = mlxsw_sp;
        vregion->vgroup = vgroup;
        vregion->ref_count = 1;

        vregion->key_info = mlxsw_afk_key_info_get(afk, elusage);
        if (IS_ERR(vregion->key_info)) {
                err = PTR_ERR(vregion->key_info);
                goto err_key_info_get;
        }

        vregion->region = mlxsw_sp_acl_tcam_region_create(mlxsw_sp, tcam,
                                                          vregion, NULL);
        if (IS_ERR(vregion->region)) {
                err = PTR_ERR(vregion->region);
                goto err_region_create;
        }

        err = mlxsw_sp_acl_tcam_vgroup_vregion_attach(mlxsw_sp, vgroup, vregion,
                                                      priority);
        if (err)
                goto err_vgroup_vregion_attach;

        if (vgroup->vregion_rehash_enabled && ops->region_rehash_hints_get) {
                /* Create the delayed work for vregion periodic rehash */
                INIT_DELAYED_WORK(&vregion->rehash.dw,
                                  mlxsw_sp_acl_tcam_vregion_rehash_work);
                mlxsw_sp_acl_tcam_vregion_rehash_work_schedule(vregion);
                mutex_lock(&tcam->lock);
                list_add_tail(&vregion->tlist, &tcam->vregion_list);
                mutex_unlock(&tcam->lock);
        }

        return vregion;

err_vgroup_vregion_attach:
        mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region);
err_region_create:
        mlxsw_afk_key_info_put(vregion->key_info);
err_key_info_get:
        kfree(vregion);
        return ERR_PTR(err);
}

static void
mlxsw_sp_acl_tcam_vregion_destroy(struct mlxsw_sp *mlxsw_sp,
                                  struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_sp_acl_tcam_vgroup *vgroup = vregion->vgroup;
        struct mlxsw_sp_acl_tcam *tcam = vregion->tcam;

        if (vgroup->vregion_rehash_enabled && ops->region_rehash_hints_get) {
                mutex_lock(&tcam->lock);
                list_del(&vregion->tlist);
                mutex_unlock(&tcam->lock);
                cancel_delayed_work_sync(&vregion->rehash.dw);
        }
        mlxsw_sp_acl_tcam_vgroup_vregion_detach(mlxsw_sp, vregion);
        if (vregion->region2)
                mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region2);
        mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, vregion->region);
        mlxsw_afk_key_info_put(vregion->key_info);
        mutex_destroy(&vregion->lock);
        kfree(vregion);
}

u32 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp,
                                                struct mlxsw_sp_acl_tcam *tcam)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        u32 vregion_rehash_intrvl;

        if (WARN_ON(!ops->region_rehash_hints_get))
                return 0;
        vregion_rehash_intrvl = tcam->vregion_rehash_intrvl;
        return vregion_rehash_intrvl;
}

int mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp,
                                                struct mlxsw_sp_acl_tcam *tcam,
                                                u32 val)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_sp_acl_tcam_vregion *vregion;

        if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val)
                return -EINVAL;
        if (WARN_ON(!ops->region_rehash_hints_get))
                return -EOPNOTSUPP;
        tcam->vregion_rehash_intrvl = val;
        mutex_lock(&tcam->lock);
        list_for_each_entry(vregion, &tcam->vregion_list, tlist) {
                if (val)
                        mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
                else
                        cancel_delayed_work_sync(&vregion->rehash.dw);
        }
        mutex_unlock(&tcam->lock);
        return 0;
}

static struct mlxsw_sp_acl_tcam_vregion *
mlxsw_sp_acl_tcam_vregion_get(struct mlxsw_sp *mlxsw_sp,
                              struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                              unsigned int priority,
                              struct mlxsw_afk_element_usage *elusage)
{
        struct mlxsw_afk_element_usage vregion_elusage;
        struct mlxsw_sp_acl_tcam_vregion *vregion;
        bool need_split;

        vregion = mlxsw_sp_acl_tcam_vgroup_vregion_find(vgroup, priority,
                                                        elusage, &need_split);
        if (vregion) {
                if (need_split) {
                        /* According to priority, new vchunk should belong to
                         * an existing vregion. However, this vchunk needs
                         * elements that vregion does not contain. We need
                         * to split the existing vregion into two and create
                         * a new vregion for the new vchunk in between.
                         * This is not supported now.
                         */
                        return ERR_PTR(-EOPNOTSUPP);
                }
                vregion->ref_count++;
                return vregion;
        }

        mlxsw_sp_acl_tcam_vgroup_use_patterns(vgroup, elusage,
                                              &vregion_elusage);

        return mlxsw_sp_acl_tcam_vregion_create(mlxsw_sp, vgroup, priority,
                                                &vregion_elusage);
}

static void
mlxsw_sp_acl_tcam_vregion_put(struct mlxsw_sp *mlxsw_sp,
                              struct mlxsw_sp_acl_tcam_vregion *vregion)
{
        if (--vregion->ref_count)
                return;
        mlxsw_sp_acl_tcam_vregion_destroy(mlxsw_sp, vregion);
}

static struct mlxsw_sp_acl_tcam_chunk *
mlxsw_sp_acl_tcam_chunk_create(struct mlxsw_sp *mlxsw_sp,
                               struct mlxsw_sp_acl_tcam_vchunk *vchunk,
                               struct mlxsw_sp_acl_tcam_region *region)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_sp_acl_tcam_chunk *chunk;

        chunk = kzalloc(sizeof(*chunk) + ops->chunk_priv_size, GFP_KERNEL);
        if (!chunk)
                return ERR_PTR(-ENOMEM);
        chunk->vchunk = vchunk;
        chunk->region = region;

        ops->chunk_init(region->priv, chunk->priv, vchunk->priority);
        return chunk;
}

static void
mlxsw_sp_acl_tcam_chunk_destroy(struct mlxsw_sp *mlxsw_sp,
                                struct mlxsw_sp_acl_tcam_chunk *chunk)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        ops->chunk_fini(chunk->priv);
        kfree(chunk);
}

static struct mlxsw_sp_acl_tcam_vchunk *
mlxsw_sp_acl_tcam_vchunk_create(struct mlxsw_sp *mlxsw_sp,
                                struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                unsigned int priority,
                                struct mlxsw_afk_element_usage *elusage)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion;
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        int err;

        if (priority == MLXSW_SP_ACL_TCAM_CATCHALL_PRIO)
                return ERR_PTR(-EINVAL);

        vchunk = kzalloc(sizeof(*vchunk), GFP_KERNEL);
        if (!vchunk)
                return ERR_PTR(-ENOMEM);
        INIT_LIST_HEAD(&vchunk->ventry_list);
        vchunk->priority = priority;

        vchunk->vgroup = vgroup;
        vchunk->ref_count = 1;

        vregion = mlxsw_sp_acl_tcam_vregion_get(mlxsw_sp, vgroup,
                                                priority, elusage);
        if (IS_ERR(vregion)) {
                err = PTR_ERR(vregion);
                goto err_vregion_get;
        }

        vchunk->vregion = vregion;

        err = rhashtable_insert_fast(&vgroup->vchunk_ht, &vchunk->ht_node,
                                     mlxsw_sp_acl_tcam_vchunk_ht_params);
        if (err)
                goto err_rhashtable_insert;

        mutex_lock(&vregion->lock);
        vchunk->chunk = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk,
                                                       vchunk->vregion->region);
        if (IS_ERR(vchunk->chunk)) {
                mutex_unlock(&vregion->lock);
                err = PTR_ERR(vchunk->chunk);
                goto err_chunk_create;
        }

        mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(vregion);
        list_add_tail(&vchunk->list, &vregion->vchunk_list);
        mutex_unlock(&vregion->lock);

        return vchunk;

err_chunk_create:
        rhashtable_remove_fast(&vgroup->vchunk_ht, &vchunk->ht_node,
                               mlxsw_sp_acl_tcam_vchunk_ht_params);
err_rhashtable_insert:
        mlxsw_sp_acl_tcam_vregion_put(mlxsw_sp, vregion);
err_vregion_get:
        kfree(vchunk);
        return ERR_PTR(err);
}

static void
mlxsw_sp_acl_tcam_vchunk_destroy(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_vchunk *vchunk)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion;
        struct mlxsw_sp_acl_tcam_vgroup *vgroup = vchunk->vgroup;

        mutex_lock(&vregion->lock);
        mlxsw_sp_acl_tcam_rehash_ctx_vregion_changed(vregion);
        list_del(&vchunk->list);
        if (vchunk->chunk2)
                mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk2);
        mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk);
        mutex_unlock(&vregion->lock);
        rhashtable_remove_fast(&vgroup->vchunk_ht, &vchunk->ht_node,
                               mlxsw_sp_acl_tcam_vchunk_ht_params);
        mlxsw_sp_acl_tcam_vregion_put(mlxsw_sp, vchunk->vregion);
        kfree(vchunk);
}

static struct mlxsw_sp_acl_tcam_vchunk *
mlxsw_sp_acl_tcam_vchunk_get(struct mlxsw_sp *mlxsw_sp,
                             struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                             unsigned int priority,
                             struct mlxsw_afk_element_usage *elusage)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;

        vchunk = rhashtable_lookup_fast(&vgroup->vchunk_ht, &priority,
                                        mlxsw_sp_acl_tcam_vchunk_ht_params);
        if (vchunk) {
                if (WARN_ON(!mlxsw_afk_key_info_subset(vchunk->vregion->key_info,
                                                       elusage)))
                        return ERR_PTR(-EINVAL);
                vchunk->ref_count++;
                return vchunk;
        }
        return mlxsw_sp_acl_tcam_vchunk_create(mlxsw_sp, vgroup,
                                               priority, elusage);
}

static void
mlxsw_sp_acl_tcam_vchunk_put(struct mlxsw_sp *mlxsw_sp,
                             struct mlxsw_sp_acl_tcam_vchunk *vchunk)
{
        if (--vchunk->ref_count)
                return;
        mlxsw_sp_acl_tcam_vchunk_destroy(mlxsw_sp, vchunk);
}

static struct mlxsw_sp_acl_tcam_entry *
mlxsw_sp_acl_tcam_entry_create(struct mlxsw_sp *mlxsw_sp,
                               struct mlxsw_sp_acl_tcam_ventry *ventry,
                               struct mlxsw_sp_acl_tcam_chunk *chunk)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        struct mlxsw_sp_acl_tcam_entry *entry;
        int err;

        entry = kzalloc(sizeof(*entry) + ops->entry_priv_size, GFP_KERNEL);
        if (!entry)
                return ERR_PTR(-ENOMEM);
        entry->ventry = ventry;
        entry->chunk = chunk;

        err = ops->entry_add(mlxsw_sp, chunk->region->priv, chunk->priv,
                             entry->priv, ventry->rulei);
        if (err)
                goto err_entry_add;

        return entry;

err_entry_add:
        kfree(entry);
        return ERR_PTR(err);
}

static void mlxsw_sp_acl_tcam_entry_destroy(struct mlxsw_sp *mlxsw_sp,
                                            struct mlxsw_sp_acl_tcam_entry *entry)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        ops->entry_del(mlxsw_sp, entry->chunk->region->priv,
                       entry->chunk->priv, entry->priv);
        kfree(entry);
}

static int
mlxsw_sp_acl_tcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
                                       struct mlxsw_sp_acl_tcam_region *region,
                                       struct mlxsw_sp_acl_tcam_entry *entry,
                                       struct mlxsw_sp_acl_rule_info *rulei)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        return ops->entry_action_replace(mlxsw_sp, region->priv,
                                         entry->priv, rulei);
}

static int
mlxsw_sp_acl_tcam_entry_activity_get(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_entry *entry,
                                     bool *activity)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        return ops->entry_activity_get(mlxsw_sp, entry->chunk->region->priv,
                                       entry->priv, activity);
}

static int mlxsw_sp_acl_tcam_ventry_add(struct mlxsw_sp *mlxsw_sp,
                                        struct mlxsw_sp_acl_tcam_vgroup *vgroup,
                                        struct mlxsw_sp_acl_tcam_ventry *ventry,
                                        struct mlxsw_sp_acl_rule_info *rulei)
{
        struct mlxsw_sp_acl_tcam_vregion *vregion;
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        int err;

        vchunk = mlxsw_sp_acl_tcam_vchunk_get(mlxsw_sp, vgroup, rulei->priority,
                                              &rulei->values.elusage);
        if (IS_ERR(vchunk))
                return PTR_ERR(vchunk);

        ventry->vchunk = vchunk;
        ventry->rulei = rulei;
        vregion = vchunk->vregion;

        mutex_lock(&vregion->lock);
        ventry->entry = mlxsw_sp_acl_tcam_entry_create(mlxsw_sp, ventry,
                                                       vchunk->chunk);
        if (IS_ERR(ventry->entry)) {
                mutex_unlock(&vregion->lock);
                err = PTR_ERR(ventry->entry);
                goto err_entry_create;
        }

        list_add_tail(&ventry->list, &vchunk->ventry_list);
        mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(vchunk);
        mutex_unlock(&vregion->lock);

        return 0;

err_entry_create:
        mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, vchunk);
        return err;
}

static void mlxsw_sp_acl_tcam_ventry_del(struct mlxsw_sp *mlxsw_sp,
                                         struct mlxsw_sp_acl_tcam_ventry *ventry)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk = ventry->vchunk;
        struct mlxsw_sp_acl_tcam_vregion *vregion = vchunk->vregion;

        mutex_lock(&vregion->lock);
        mlxsw_sp_acl_tcam_rehash_ctx_vchunk_changed(vchunk);
        list_del(&ventry->list);
        mlxsw_sp_acl_tcam_entry_destroy(mlxsw_sp, ventry->entry);
        mutex_unlock(&vregion->lock);
        mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, vchunk);
}

static int
mlxsw_sp_acl_tcam_ventry_action_replace(struct mlxsw_sp *mlxsw_sp,
                                        struct mlxsw_sp_acl_tcam_ventry *ventry,
                                        struct mlxsw_sp_acl_rule_info *rulei)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk = ventry->vchunk;

        return mlxsw_sp_acl_tcam_entry_action_replace(mlxsw_sp,
                                                      vchunk->vregion->region,
                                                      ventry->entry, rulei);
}

static int
mlxsw_sp_acl_tcam_ventry_activity_get(struct mlxsw_sp *mlxsw_sp,
                                      struct mlxsw_sp_acl_tcam_ventry *ventry,
                                      bool *activity)
{
        return mlxsw_sp_acl_tcam_entry_activity_get(mlxsw_sp,
                                                    ventry->entry, activity);
}

static int
mlxsw_sp_acl_tcam_ventry_migrate(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_ventry *ventry,
                                 struct mlxsw_sp_acl_tcam_chunk *chunk,
                                 int *credits)
{
        struct mlxsw_sp_acl_tcam_entry *new_entry;

        /* First check if the entry is not already where we want it to be. */
        if (ventry->entry->chunk == chunk)
                return 0;

        if (--(*credits) < 0)
                return 0;

        new_entry = mlxsw_sp_acl_tcam_entry_create(mlxsw_sp, ventry, chunk);
        if (IS_ERR(new_entry))
                return PTR_ERR(new_entry);
        mlxsw_sp_acl_tcam_entry_destroy(mlxsw_sp, ventry->entry);
        ventry->entry = new_entry;
        return 0;
}

static int
mlxsw_sp_acl_tcam_vchunk_migrate_start(struct mlxsw_sp *mlxsw_sp,
                                       struct mlxsw_sp_acl_tcam_vchunk *vchunk,
                                       struct mlxsw_sp_acl_tcam_region *region,
                                       struct mlxsw_sp_acl_tcam_rehash_ctx *ctx)
{
        struct mlxsw_sp_acl_tcam_chunk *new_chunk;

        new_chunk = mlxsw_sp_acl_tcam_chunk_create(mlxsw_sp, vchunk, region);
        if (IS_ERR(new_chunk))
                return PTR_ERR(new_chunk);
        vchunk->chunk2 = vchunk->chunk;
        vchunk->chunk = new_chunk;
        ctx->current_vchunk = vchunk;
        ctx->start_ventry = NULL;
        ctx->stop_ventry = NULL;
        return 0;
}

static void
mlxsw_sp_acl_tcam_vchunk_migrate_end(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_vchunk *vchunk,
                                     struct mlxsw_sp_acl_tcam_rehash_ctx *ctx)
{
        mlxsw_sp_acl_tcam_chunk_destroy(mlxsw_sp, vchunk->chunk2);
        vchunk->chunk2 = NULL;
        ctx->current_vchunk = NULL;
}

static int
mlxsw_sp_acl_tcam_vchunk_migrate_one(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_vchunk *vchunk,
                                     struct mlxsw_sp_acl_tcam_region *region,
                                     struct mlxsw_sp_acl_tcam_rehash_ctx *ctx,
                                     int *credits)
{
        struct mlxsw_sp_acl_tcam_ventry *ventry;
        int err;

        if (vchunk->chunk->region != region) {
                err = mlxsw_sp_acl_tcam_vchunk_migrate_start(mlxsw_sp, vchunk,
                                                             region, ctx);
                if (err)
                        return err;
        } else if (!vchunk->chunk2) {
                /* The chunk is already as it should be, nothing to do. */
                return 0;
        }

        /* If the migration got interrupted, we have the ventry to start from
         * stored in context.
         */
        if (ctx->start_ventry)
                ventry = ctx->start_ventry;
        else
                ventry = list_first_entry(&vchunk->ventry_list,
                                          typeof(*ventry), list);

        list_for_each_entry_from(ventry, &vchunk->ventry_list, list) {
                /* During rollback, once we reach the ventry that failed
                 * to migrate, we are done.
                 */
                if (ventry == ctx->stop_ventry)
                        break;

                err = mlxsw_sp_acl_tcam_ventry_migrate(mlxsw_sp, ventry,
                                                       vchunk->chunk, credits);
                if (err) {
                        if (ctx->this_is_rollback) {
                                /* Save the ventry which we ended with and try
                                 * to continue later on.
                                 */
                                ctx->start_ventry = ventry;
                                return err;
                        }
                        /* Swap the chunk and chunk2 pointers so the follow-up
                         * rollback call will see the original chunk pointer
                         * in vchunk->chunk.
                         */
                        swap(vchunk->chunk, vchunk->chunk2);
                        /* The rollback has to be done from beginning of the
                         * chunk, that is why we have to null the start_ventry.
                         * However, we know where to stop the rollback,
                         * at the current ventry.
                         */
                        ctx->start_ventry = NULL;
                        ctx->stop_ventry = ventry;
                        return err;
                } else if (*credits < 0) {
                        /* We are out of credits, the rest of the ventries
                         * will be migrated later. Save the ventry
                         * which we ended with.
                         */
                        ctx->start_ventry = ventry;
                        return 0;
                }
        }

        mlxsw_sp_acl_tcam_vchunk_migrate_end(mlxsw_sp, vchunk, ctx);
        return 0;
}

static int
mlxsw_sp_acl_tcam_vchunk_migrate_all(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_vregion *vregion,
                                     struct mlxsw_sp_acl_tcam_rehash_ctx *ctx,
                                     int *credits)
{
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        int err;

        /* If the migration got interrupted, we have the vchunk
         * we are working on stored in context.
         */
        if (ctx->current_vchunk)
                vchunk = ctx->current_vchunk;
        else
                vchunk = list_first_entry(&vregion->vchunk_list,
                                          typeof(*vchunk), list);

        list_for_each_entry_from(vchunk, &vregion->vchunk_list, list) {
                err = mlxsw_sp_acl_tcam_vchunk_migrate_one(mlxsw_sp, vchunk,
                                                           vregion->region,
                                                           ctx, credits);
                if (err || *credits < 0)
                        return err;
        }
        return 0;
}

static int
mlxsw_sp_acl_tcam_vregion_migrate(struct mlxsw_sp *mlxsw_sp,
                                  struct mlxsw_sp_acl_tcam_vregion *vregion,
                                  struct mlxsw_sp_acl_tcam_rehash_ctx *ctx,
                                  int *credits)
{
        int err, err2;

        trace_mlxsw_sp_acl_tcam_vregion_migrate(mlxsw_sp, vregion);
        mutex_lock(&vregion->lock);
        err = mlxsw_sp_acl_tcam_vchunk_migrate_all(mlxsw_sp, vregion,
                                                   ctx, credits);
        if (err) {
                /* In case migration was not successful, we need to swap
                 * so the original region pointer is assigned again
                 * to vregion->region.
                 */
                swap(vregion->region, vregion->region2);
                ctx->current_vchunk = NULL;
                ctx->this_is_rollback = true;
                err2 = mlxsw_sp_acl_tcam_vchunk_migrate_all(mlxsw_sp, vregion,
                                                            ctx, credits);
                if (err2) {
                        trace_mlxsw_sp_acl_tcam_vregion_rehash_rollback_failed(mlxsw_sp,
                                                                               vregion);
                        dev_err(mlxsw_sp->bus_info->dev, "Failed to rollback during vregion migration fail\n");
                        /* Let the rollback to be continued later on. */
                }
        }
        mutex_unlock(&vregion->lock);
        trace_mlxsw_sp_acl_tcam_vregion_migrate_end(mlxsw_sp, vregion);
        return err;
}

static bool
mlxsw_sp_acl_tcam_vregion_rehash_in_progress(const struct mlxsw_sp_acl_tcam_rehash_ctx *ctx)
{
        return ctx->hints_priv;
}

static int
mlxsw_sp_acl_tcam_vregion_rehash_start(struct mlxsw_sp *mlxsw_sp,
                                       struct mlxsw_sp_acl_tcam_vregion *vregion,
                                       struct mlxsw_sp_acl_tcam_rehash_ctx *ctx)
{
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
        unsigned int priority = mlxsw_sp_acl_tcam_vregion_prio(vregion);
        struct mlxsw_sp_acl_tcam_region *new_region;
        void *hints_priv;
        int err;

        trace_mlxsw_sp_acl_tcam_vregion_rehash(mlxsw_sp, vregion);

        hints_priv = ops->region_rehash_hints_get(vregion->region->priv);
        if (IS_ERR(hints_priv))
                return PTR_ERR(hints_priv);

        new_region = mlxsw_sp_acl_tcam_region_create(mlxsw_sp, vregion->tcam,
                                                     vregion, hints_priv);
        if (IS_ERR(new_region)) {
                err = PTR_ERR(new_region);
                goto err_region_create;
        }

        /* vregion->region contains the pointer to the new region
         * we are going to migrate to.
         */
        vregion->region2 = vregion->region;
        vregion->region = new_region;
        err = mlxsw_sp_acl_tcam_group_region_attach(mlxsw_sp,
                                                    vregion->region2->group,
                                                    new_region, priority,
                                                    vregion->region2);
        if (err)
                goto err_group_region_attach;

        ctx->hints_priv = hints_priv;
        ctx->this_is_rollback = false;

        return 0;

err_group_region_attach:
        vregion->region = vregion->region2;
        vregion->region2 = NULL;
        mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, new_region);
err_region_create:
        ops->region_rehash_hints_put(hints_priv);
        return err;
}

static void
mlxsw_sp_acl_tcam_vregion_rehash_end(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam_vregion *vregion,
                                     struct mlxsw_sp_acl_tcam_rehash_ctx *ctx)
{
        struct mlxsw_sp_acl_tcam_region *unused_region = vregion->region2;
        const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;

        vregion->region2 = NULL;
        mlxsw_sp_acl_tcam_group_region_detach(mlxsw_sp, unused_region);
        mlxsw_sp_acl_tcam_region_destroy(mlxsw_sp, unused_region);
        ops->region_rehash_hints_put(ctx->hints_priv);
        ctx->hints_priv = NULL;
}

static void
mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam_vregion *vregion,
                                 int *credits)
{
        struct mlxsw_sp_acl_tcam_rehash_ctx *ctx = &vregion->rehash.ctx;
        int err;

        /* Check if the previous rehash work was interrupted
         * which means we have to continue it now.
         * If not, start a new rehash.
         */
        if (!mlxsw_sp_acl_tcam_vregion_rehash_in_progress(ctx)) {
                err = mlxsw_sp_acl_tcam_vregion_rehash_start(mlxsw_sp,
                                                             vregion, ctx);
                if (err) {
                        if (err != -EAGAIN)
                                dev_err(mlxsw_sp->bus_info->dev, "Failed get rehash hints\n");
                        return;
                }
        }

        err = mlxsw_sp_acl_tcam_vregion_migrate(mlxsw_sp, vregion,
                                                ctx, credits);
        if (err) {
                dev_err(mlxsw_sp->bus_info->dev, "Failed to migrate vregion\n");
        }

        if (*credits >= 0)
                mlxsw_sp_acl_tcam_vregion_rehash_end(mlxsw_sp, vregion, ctx);
}

static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = {
        MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
        MLXSW_AFK_ELEMENT_DMAC_32_47,
        MLXSW_AFK_ELEMENT_DMAC_0_31,
        MLXSW_AFK_ELEMENT_SMAC_32_47,
        MLXSW_AFK_ELEMENT_SMAC_0_31,
        MLXSW_AFK_ELEMENT_ETHERTYPE,
        MLXSW_AFK_ELEMENT_IP_PROTO,
        MLXSW_AFK_ELEMENT_SRC_IP_0_31,
        MLXSW_AFK_ELEMENT_DST_IP_0_31,
        MLXSW_AFK_ELEMENT_DST_L4_PORT,
        MLXSW_AFK_ELEMENT_SRC_L4_PORT,
        MLXSW_AFK_ELEMENT_VID,
        MLXSW_AFK_ELEMENT_PCP,
        MLXSW_AFK_ELEMENT_TCP_FLAGS,
        MLXSW_AFK_ELEMENT_IP_TTL_,
        MLXSW_AFK_ELEMENT_IP_ECN,
        MLXSW_AFK_ELEMENT_IP_DSCP,
};

static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv6[] = {
        MLXSW_AFK_ELEMENT_ETHERTYPE,
        MLXSW_AFK_ELEMENT_IP_PROTO,
        MLXSW_AFK_ELEMENT_SRC_IP_96_127,
        MLXSW_AFK_ELEMENT_SRC_IP_64_95,
        MLXSW_AFK_ELEMENT_SRC_IP_32_63,
        MLXSW_AFK_ELEMENT_SRC_IP_0_31,
        MLXSW_AFK_ELEMENT_DST_IP_96_127,
        MLXSW_AFK_ELEMENT_DST_IP_64_95,
        MLXSW_AFK_ELEMENT_DST_IP_32_63,
        MLXSW_AFK_ELEMENT_DST_IP_0_31,
        MLXSW_AFK_ELEMENT_DST_L4_PORT,
        MLXSW_AFK_ELEMENT_SRC_L4_PORT,
};

static const struct mlxsw_sp_acl_tcam_pattern mlxsw_sp_acl_tcam_patterns[] = {
        {
                .elements = mlxsw_sp_acl_tcam_pattern_ipv4,
                .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv4),
        },
        {
                .elements = mlxsw_sp_acl_tcam_pattern_ipv6,
                .elements_count = ARRAY_SIZE(mlxsw_sp_acl_tcam_pattern_ipv6),
        },
};

#define MLXSW_SP_ACL_TCAM_PATTERNS_COUNT \
        ARRAY_SIZE(mlxsw_sp_acl_tcam_patterns)

struct mlxsw_sp_acl_tcam_flower_ruleset {
        struct mlxsw_sp_acl_tcam_vgroup vgroup;
};

struct mlxsw_sp_acl_tcam_flower_rule {
        struct mlxsw_sp_acl_tcam_ventry ventry;
};

static int
mlxsw_sp_acl_tcam_flower_ruleset_add(struct mlxsw_sp *mlxsw_sp,
                                     struct mlxsw_sp_acl_tcam *tcam,
                                     void *ruleset_priv,
                                     struct mlxsw_afk_element_usage *tmplt_elusage)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;

        return mlxsw_sp_acl_tcam_vgroup_add(mlxsw_sp, tcam, &ruleset->vgroup,
                                            mlxsw_sp_acl_tcam_patterns,
                                            MLXSW_SP_ACL_TCAM_PATTERNS_COUNT,
                                            tmplt_elusage, true);
}

static void
mlxsw_sp_acl_tcam_flower_ruleset_del(struct mlxsw_sp *mlxsw_sp,
                                     void *ruleset_priv)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;

        mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup);
}

static int
mlxsw_sp_acl_tcam_flower_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
                                      void *ruleset_priv,
                                      struct mlxsw_sp_port *mlxsw_sp_port,
                                      bool ingress)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;

        return mlxsw_sp_acl_tcam_group_bind(mlxsw_sp, &ruleset->vgroup.group,
                                            mlxsw_sp_port, ingress);
}

static void
mlxsw_sp_acl_tcam_flower_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
                                        void *ruleset_priv,
                                        struct mlxsw_sp_port *mlxsw_sp_port,
                                        bool ingress)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;

        mlxsw_sp_acl_tcam_group_unbind(mlxsw_sp, &ruleset->vgroup.group,
                                       mlxsw_sp_port, ingress);
}

static u16
mlxsw_sp_acl_tcam_flower_ruleset_group_id(void *ruleset_priv)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;

        return mlxsw_sp_acl_tcam_group_id(&ruleset->vgroup.group);
}

static int
mlxsw_sp_acl_tcam_flower_rule_add(struct mlxsw_sp *mlxsw_sp,
                                  void *ruleset_priv, void *rule_priv,
                                  struct mlxsw_sp_acl_rule_info *rulei)
{
        struct mlxsw_sp_acl_tcam_flower_ruleset *ruleset = ruleset_priv;
        struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv;

        return mlxsw_sp_acl_tcam_ventry_add(mlxsw_sp, &ruleset->vgroup,
                                            &rule->ventry, rulei);
}

static void
mlxsw_sp_acl_tcam_flower_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv)
{
        struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv;

        mlxsw_sp_acl_tcam_ventry_del(mlxsw_sp, &rule->ventry);
}

static int
mlxsw_sp_acl_tcam_flower_rule_action_replace(struct mlxsw_sp *mlxsw_sp,
                                             void *rule_priv,
                                             struct mlxsw_sp_acl_rule_info *rulei)
{
        return -EOPNOTSUPP;
}

static int
mlxsw_sp_acl_tcam_flower_rule_activity_get(struct mlxsw_sp *mlxsw_sp,
                                           void *rule_priv, bool *activity)
{
        struct mlxsw_sp_acl_tcam_flower_rule *rule = rule_priv;

        return mlxsw_sp_acl_tcam_ventry_activity_get(mlxsw_sp, &rule->ventry,
                                                     activity);
}

static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_flower_ops = {
        .ruleset_priv_size      = sizeof(struct mlxsw_sp_acl_tcam_flower_ruleset),
        .ruleset_add            = mlxsw_sp_acl_tcam_flower_ruleset_add,
        .ruleset_del            = mlxsw_sp_acl_tcam_flower_ruleset_del,
        .ruleset_bind           = mlxsw_sp_acl_tcam_flower_ruleset_bind,
        .ruleset_unbind         = mlxsw_sp_acl_tcam_flower_ruleset_unbind,
        .ruleset_group_id       = mlxsw_sp_acl_tcam_flower_ruleset_group_id,
        .rule_priv_size         = sizeof(struct mlxsw_sp_acl_tcam_flower_rule),
        .rule_add               = mlxsw_sp_acl_tcam_flower_rule_add,
        .rule_del               = mlxsw_sp_acl_tcam_flower_rule_del,
        .rule_action_replace    = mlxsw_sp_acl_tcam_flower_rule_action_replace,
        .rule_activity_get      = mlxsw_sp_acl_tcam_flower_rule_activity_get,
};

struct mlxsw_sp_acl_tcam_mr_ruleset {
        struct mlxsw_sp_acl_tcam_vchunk *vchunk;
        struct mlxsw_sp_acl_tcam_vgroup vgroup;
};

struct mlxsw_sp_acl_tcam_mr_rule {
        struct mlxsw_sp_acl_tcam_ventry ventry;
};

static int
mlxsw_sp_acl_tcam_mr_ruleset_add(struct mlxsw_sp *mlxsw_sp,
                                 struct mlxsw_sp_acl_tcam *tcam,
                                 void *ruleset_priv,
                                 struct mlxsw_afk_element_usage *tmplt_elusage)
{
        struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv;
        int err;

        err = mlxsw_sp_acl_tcam_vgroup_add(mlxsw_sp, tcam, &ruleset->vgroup,
                                           mlxsw_sp_acl_tcam_patterns,
                                           MLXSW_SP_ACL_TCAM_PATTERNS_COUNT,
                                           tmplt_elusage, false);
        if (err)
                return err;

        /* For most of the TCAM clients it would make sense to take a tcam chunk
         * only when the first rule is written. This is not the case for
         * multicast router as it is required to bind the multicast router to a
         * specific ACL Group ID which must exist in HW before multicast router
         * is initialized.
         */
        ruleset->vchunk = mlxsw_sp_acl_tcam_vchunk_get(mlxsw_sp,
                                                       &ruleset->vgroup, 1,
                                                       tmplt_elusage);
        if (IS_ERR(ruleset->vchunk)) {
                err = PTR_ERR(ruleset->vchunk);
                goto err_chunk_get;
        }

        return 0;

err_chunk_get:
        mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup);
        return err;
}

static void
mlxsw_sp_acl_tcam_mr_ruleset_del(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv)
{
        struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv;

        mlxsw_sp_acl_tcam_vchunk_put(mlxsw_sp, ruleset->vchunk);
        mlxsw_sp_acl_tcam_vgroup_del(&ruleset->vgroup);
}

static int
mlxsw_sp_acl_tcam_mr_ruleset_bind(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv,
                                  struct mlxsw_sp_port *mlxsw_sp_port,
                                  bool ingress)
{
        /* Binding is done when initializing multicast router */
        return 0;
}

static void
mlxsw_sp_acl_tcam_mr_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
                                    void *ruleset_priv,
                                    struct mlxsw_sp_port *mlxsw_sp_port,
                                    bool ingress)
{
}

static u16
mlxsw_sp_acl_tcam_mr_ruleset_group_id(void *ruleset_priv)
{
        struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv;

        return mlxsw_sp_acl_tcam_group_id(&ruleset->vgroup.group);
}

static int
mlxsw_sp_acl_tcam_mr_rule_add(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv,
                              void *rule_priv,
                              struct mlxsw_sp_acl_rule_info *rulei)
{
        struct mlxsw_sp_acl_tcam_mr_ruleset *ruleset = ruleset_priv;
        struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv;

        return mlxsw_sp_acl_tcam_ventry_add(mlxsw_sp, &ruleset->vgroup,
                                           &rule->ventry, rulei);
}

static void
mlxsw_sp_acl_tcam_mr_rule_del(struct mlxsw_sp *mlxsw_sp, void *rule_priv)
{
        struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv;

        mlxsw_sp_acl_tcam_ventry_del(mlxsw_sp, &rule->ventry);
}

static int
mlxsw_sp_acl_tcam_mr_rule_action_replace(struct mlxsw_sp *mlxsw_sp,
                                         void *rule_priv,
                                         struct mlxsw_sp_acl_rule_info *rulei)
{
        struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv;

        return mlxsw_sp_acl_tcam_ventry_action_replace(mlxsw_sp, &rule->ventry,
                                                       rulei);
}

static int
mlxsw_sp_acl_tcam_mr_rule_activity_get(struct mlxsw_sp *mlxsw_sp,
                                       void *rule_priv, bool *activity)
{
        struct mlxsw_sp_acl_tcam_mr_rule *rule = rule_priv;

        return mlxsw_sp_acl_tcam_ventry_activity_get(mlxsw_sp, &rule->ventry,
                                                     activity);
}

static const struct mlxsw_sp_acl_profile_ops mlxsw_sp_acl_tcam_mr_ops = {
        .ruleset_priv_size      = sizeof(struct mlxsw_sp_acl_tcam_mr_ruleset),
        .ruleset_add            = mlxsw_sp_acl_tcam_mr_ruleset_add,
        .ruleset_del            = mlxsw_sp_acl_tcam_mr_ruleset_del,
        .ruleset_bind           = mlxsw_sp_acl_tcam_mr_ruleset_bind,
        .ruleset_unbind         = mlxsw_sp_acl_tcam_mr_ruleset_unbind,
        .ruleset_group_id       = mlxsw_sp_acl_tcam_mr_ruleset_group_id,
        .rule_priv_size         = sizeof(struct mlxsw_sp_acl_tcam_mr_rule),
        .rule_add               = mlxsw_sp_acl_tcam_mr_rule_add,
        .rule_del               = mlxsw_sp_acl_tcam_mr_rule_del,
        .rule_action_replace    = mlxsw_sp_acl_tcam_mr_rule_action_replace,
        .rule_activity_get      = mlxsw_sp_acl_tcam_mr_rule_activity_get,
};

static const struct mlxsw_sp_acl_profile_ops *
mlxsw_sp_acl_tcam_profile_ops_arr[] = {
        [MLXSW_SP_ACL_PROFILE_FLOWER] = &mlxsw_sp_acl_tcam_flower_ops,
        [MLXSW_SP_ACL_PROFILE_MR] = &mlxsw_sp_acl_tcam_mr_ops,
};

const struct mlxsw_sp_acl_profile_ops *
mlxsw_sp_acl_tcam_profile_ops(struct mlxsw_sp *mlxsw_sp,
                              enum mlxsw_sp_acl_profile profile)
{
        const struct mlxsw_sp_acl_profile_ops *ops;

        if (WARN_ON(profile >= ARRAY_SIZE(mlxsw_sp_acl_tcam_profile_ops_arr)))
                return NULL;
        ops = mlxsw_sp_acl_tcam_profile_ops_arr[profile];
        if (WARN_ON(!ops))
                return NULL;
        return ops;
}