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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2019 Mellanox Technologies. */
#include "dr_types.h"
int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
struct mlx5dr_action *action)
{
struct mlx5dr_matcher *last_matcher = NULL;
struct mlx5dr_htbl_connect_info info;
struct mlx5dr_ste_htbl *last_htbl;
int ret;
if (action && action->action_type != DR_ACTION_TYP_FT)
return -EOPNOTSUPP;
mutex_lock(&tbl->dmn->mutex);
if (!list_empty(&tbl->matcher_list))
last_matcher = list_last_entry(&tbl->matcher_list,
struct mlx5dr_matcher,
matcher_list);
if (tbl->dmn->type == MLX5DR_DOMAIN_TYPE_NIC_RX ||
tbl->dmn->type == MLX5DR_DOMAIN_TYPE_FDB) {
if (last_matcher)
last_htbl = last_matcher->rx.e_anchor;
else
last_htbl = tbl->rx.s_anchor;
tbl->rx.default_icm_addr = action ?
action->dest_tbl.tbl->rx.s_anchor->chunk->icm_addr :
tbl->rx.nic_dmn->default_icm_addr;
info.type = CONNECT_MISS;
info.miss_icm_addr = tbl->rx.default_icm_addr;
ret = mlx5dr_ste_htbl_init_and_postsend(tbl->dmn,
tbl->rx.nic_dmn,
last_htbl,
&info, true);
if (ret) {
mlx5dr_dbg(tbl->dmn, "Failed to set RX miss action, ret %d\n", ret);
goto out;
}
}
if (tbl->dmn->type == MLX5DR_DOMAIN_TYPE_NIC_TX ||
tbl->dmn->type == MLX5DR_DOMAIN_TYPE_FDB) {
if (last_matcher)
last_htbl = last_matcher->tx.e_anchor;
else
last_htbl = tbl->tx.s_anchor;
tbl->tx.default_icm_addr = action ?
action->dest_tbl.tbl->tx.s_anchor->chunk->icm_addr :
tbl->tx.nic_dmn->default_icm_addr;
info.type = CONNECT_MISS;
info.miss_icm_addr = tbl->tx.default_icm_addr;
ret = mlx5dr_ste_htbl_init_and_postsend(tbl->dmn,
tbl->tx.nic_dmn,
last_htbl, &info, true);
if (ret) {
mlx5dr_dbg(tbl->dmn, "Failed to set TX miss action, ret %d\n", ret);
goto out;
}
}
/* Release old action */
if (tbl->miss_action)
refcount_dec(&tbl->miss_action->refcount);
/* Set new miss action */
tbl->miss_action = action;
if (tbl->miss_action)
refcount_inc(&action->refcount);
out:
mutex_unlock(&tbl->dmn->mutex);
return ret;
}
static void dr_table_uninit_nic(struct mlx5dr_table_rx_tx *nic_tbl)
{
mlx5dr_htbl_put(nic_tbl->s_anchor);
}
static void dr_table_uninit_fdb(struct mlx5dr_table *tbl)
{
dr_table_uninit_nic(&tbl->rx);
dr_table_uninit_nic(&tbl->tx);
}
static void dr_table_uninit(struct mlx5dr_table *tbl)
{
mutex_lock(&tbl->dmn->mutex);
switch (tbl->dmn->type) {
case MLX5DR_DOMAIN_TYPE_NIC_RX:
dr_table_uninit_nic(&tbl->rx);
break;
case MLX5DR_DOMAIN_TYPE_NIC_TX:
dr_table_uninit_nic(&tbl->tx);
break;
case MLX5DR_DOMAIN_TYPE_FDB:
dr_table_uninit_fdb(tbl);
break;
default:
WARN_ON(true);
break;
}
mutex_unlock(&tbl->dmn->mutex);
}
static int dr_table_init_nic(struct mlx5dr_domain *dmn,
struct mlx5dr_table_rx_tx *nic_tbl)
{
struct mlx5dr_domain_rx_tx *nic_dmn = nic_tbl->nic_dmn;
struct mlx5dr_htbl_connect_info info;
int ret;
nic_tbl->default_icm_addr = nic_dmn->default_icm_addr;
nic_tbl->s_anchor = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
DR_CHUNK_SIZE_1,
MLX5DR_STE_LU_TYPE_DONT_CARE,
0);
if (!nic_tbl->s_anchor)
return -ENOMEM;
info.type = CONNECT_MISS;
info.miss_icm_addr = nic_dmn->default_icm_addr;
ret = mlx5dr_ste_htbl_init_and_postsend(dmn, nic_dmn,
nic_tbl->s_anchor,
&info, true);
if (ret)
goto free_s_anchor;
mlx5dr_htbl_get(nic_tbl->s_anchor);
return 0;
free_s_anchor:
mlx5dr_ste_htbl_free(nic_tbl->s_anchor);
return ret;
}
static int dr_table_init_fdb(struct mlx5dr_table *tbl)
{
int ret;
ret = dr_table_init_nic(tbl->dmn, &tbl->rx);
if (ret)
return ret;
ret = dr_table_init_nic(tbl->dmn, &tbl->tx);
if (ret)
goto destroy_rx;
return 0;
destroy_rx:
dr_table_uninit_nic(&tbl->rx);
return ret;
}
static int dr_table_init(struct mlx5dr_table *tbl)
{
int ret = 0;
INIT_LIST_HEAD(&tbl->matcher_list);
mutex_lock(&tbl->dmn->mutex);
switch (tbl->dmn->type) {
case MLX5DR_DOMAIN_TYPE_NIC_RX:
tbl->table_type = MLX5_FLOW_TABLE_TYPE_NIC_RX;
tbl->rx.nic_dmn = &tbl->dmn->info.rx;
ret = dr_table_init_nic(tbl->dmn, &tbl->rx);
break;
case MLX5DR_DOMAIN_TYPE_NIC_TX:
tbl->table_type = MLX5_FLOW_TABLE_TYPE_NIC_TX;
tbl->tx.nic_dmn = &tbl->dmn->info.tx;
ret = dr_table_init_nic(tbl->dmn, &tbl->tx);
break;
case MLX5DR_DOMAIN_TYPE_FDB:
tbl->table_type = MLX5_FLOW_TABLE_TYPE_FDB;
tbl->rx.nic_dmn = &tbl->dmn->info.rx;
tbl->tx.nic_dmn = &tbl->dmn->info.tx;
ret = dr_table_init_fdb(tbl);
break;
default:
WARN_ON(true);
break;
}
mutex_unlock(&tbl->dmn->mutex);
return ret;
}
static int dr_table_destroy_sw_owned_tbl(struct mlx5dr_table *tbl)
{
return mlx5dr_cmd_destroy_flow_table(tbl->dmn->mdev,
tbl->table_id,
tbl->table_type);
}
static int dr_table_create_sw_owned_tbl(struct mlx5dr_table *tbl)
{
u64 icm_addr_rx = 0;
u64 icm_addr_tx = 0;
int ret;
if (tbl->rx.s_anchor)
icm_addr_rx = tbl->rx.s_anchor->chunk->icm_addr;
if (tbl->tx.s_anchor)
icm_addr_tx = tbl->tx.s_anchor->chunk->icm_addr;
ret = mlx5dr_cmd_create_flow_table(tbl->dmn->mdev,
tbl->table_type,
icm_addr_rx,
icm_addr_tx,
tbl->dmn->info.caps.max_ft_level - 1,
true, false, NULL,
&tbl->table_id);
return ret;
}
struct mlx5dr_table *mlx5dr_table_create(struct mlx5dr_domain *dmn, u32 level)
{
struct mlx5dr_table *tbl;
int ret;
refcount_inc(&dmn->refcount);
tbl = kzalloc(sizeof(*tbl), GFP_KERNEL);
if (!tbl)
goto dec_ref;
tbl->dmn = dmn;
tbl->level = level;
refcount_set(&tbl->refcount, 1);
ret = dr_table_init(tbl);
if (ret)
goto free_tbl;
ret = dr_table_create_sw_owned_tbl(tbl);
if (ret)
goto uninit_tbl;
return tbl;
uninit_tbl:
dr_table_uninit(tbl);
free_tbl:
kfree(tbl);
dec_ref:
refcount_dec(&dmn->refcount);
return NULL;
}
int mlx5dr_table_destroy(struct mlx5dr_table *tbl)
{
int ret;
if (refcount_read(&tbl->refcount) > 1)
return -EBUSY;
ret = dr_table_destroy_sw_owned_tbl(tbl);
if (ret)
return ret;
dr_table_uninit(tbl);
if (tbl->miss_action)
refcount_dec(&tbl->miss_action->refcount);
refcount_dec(&tbl->dmn->refcount);
kfree(tbl);
return ret;
}
u32 mlx5dr_table_get_id(struct mlx5dr_table *tbl)
{
return tbl->table_id;
}
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