Release 4.11 drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Jiri Pirko <jiri@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/string.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include "reg.h"
#include "core.h"
#include "resources.h"
#include "spectrum.h"
#include "core_acl_flex_keys.h"
#include "core_acl_flex_actions.h"
#include "spectrum_acl_flex_keys.h"
struct mlxsw_sp_acl {
struct mlxsw_afk *afk;
struct mlxsw_afa *afa;
const struct mlxsw_sp_acl_ops *ops;
struct rhashtable ruleset_ht;
unsigned long priv[0];
/* priv has to be always the last item */
};
struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl)
{
return acl->afk;
}
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struct mlxsw_sp_acl_ruleset_ht_key {
struct net_device *dev; /* dev this ruleset is bound to */
bool ingress;
const struct mlxsw_sp_acl_profile_ops *ops;
};
struct mlxsw_sp_acl_ruleset {
struct rhash_head ht_node; /* Member of acl HT */
struct mlxsw_sp_acl_ruleset_ht_key ht_key;
struct rhashtable rule_ht;
unsigned int ref_count;
unsigned long priv[0];
/* priv has to be always the last item */
};
struct mlxsw_sp_acl_rule {
struct rhash_head ht_node; /* Member of rule HT */
unsigned long cookie; /* HT key */
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule_info *rulei;
unsigned long priv[0];
/* priv has to be always the last item */
};
static const struct rhashtable_params mlxsw_sp_acl_ruleset_ht_params = {
.key_len = sizeof(struct mlxsw_sp_acl_ruleset_ht_key),
.key_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_key),
.head_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_node),
.automatic_shrinking = true,
};
static const struct rhashtable_params mlxsw_sp_acl_rule_ht_params = {
.key_len = sizeof(unsigned long),
.key_offset = offsetof(struct mlxsw_sp_acl_rule, cookie),
.head_offset = offsetof(struct mlxsw_sp_acl_rule, ht_node),
.automatic_shrinking = true,
};
static struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
const struct mlxsw_sp_acl_profile_ops *ops)
{
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
struct mlxsw_sp_acl_ruleset *ruleset;
size_t alloc_size;
int err;
alloc_size = sizeof(*ruleset) + ops->ruleset_priv_size;
ruleset = kzalloc(alloc_size, GFP_KERNEL);
if (!ruleset)
return ERR_PTR(-ENOMEM);
ruleset->ref_count = 1;
ruleset->ht_key.ops = ops;
err = rhashtable_init(&ruleset->rule_ht, &mlxsw_sp_acl_rule_ht_params);
if (err)
goto err_rhashtable_init;
err = ops->ruleset_add(mlxsw_sp, acl->priv, ruleset->priv);
if (err)
goto err_ops_ruleset_add;
return ruleset;
err_ops_ruleset_add:
rhashtable_destroy(&ruleset->rule_ht);
err_rhashtable_init:
kfree(ruleset);
return ERR_PTR(err);
}
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static void mlxsw_sp_acl_ruleset_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset)
{
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
ops->ruleset_del(mlxsw_sp, ruleset->priv);
rhashtable_destroy(&ruleset->rule_ht);
kfree(ruleset);
}
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static int mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
struct net_device *dev, bool ingress)
{
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
int err;
ruleset->ht_key.dev = dev;
ruleset->ht_key.ingress = ingress;
err = rhashtable_insert_fast(&acl->ruleset_ht, &ruleset->ht_node,
mlxsw_sp_acl_ruleset_ht_params);
if (err)
return err;
err = ops->ruleset_bind(mlxsw_sp, ruleset->priv, dev, ingress);
if (err)
goto err_ops_ruleset_bind;
return 0;
err_ops_ruleset_bind:
rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node,
mlxsw_sp_acl_ruleset_ht_params);
return err;
}
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static void mlxsw_sp_acl_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset)
{
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
ops->ruleset_unbind(mlxsw_sp, ruleset->priv);
rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node,
mlxsw_sp_acl_ruleset_ht_params);
}
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static void mlxsw_sp_acl_ruleset_ref_inc(struct mlxsw_sp_acl_ruleset *ruleset)
{
ruleset->ref_count++;
}
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static void mlxsw_sp_acl_ruleset_ref_dec(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset)
{
if (--ruleset->ref_count)
return;
mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, ruleset);
mlxsw_sp_acl_ruleset_destroy(mlxsw_sp, ruleset);
}
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struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
struct net_device *dev, bool ingress,
enum mlxsw_sp_acl_profile profile)
{
const struct mlxsw_sp_acl_profile_ops *ops;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
struct mlxsw_sp_acl_ruleset_ht_key ht_key;
struct mlxsw_sp_acl_ruleset *ruleset;
int err;
ops = acl->ops->profile_ops(mlxsw_sp, profile);
if (!ops)
return ERR_PTR(-EINVAL);
memset(&ht_key, 0, sizeof(ht_key));
ht_key.dev = dev;
ht_key.ingress = ingress;
ht_key.ops = ops;
ruleset = rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
mlxsw_sp_acl_ruleset_ht_params);
if (ruleset) {
mlxsw_sp_acl_ruleset_ref_inc(ruleset);
return ruleset;
}
ruleset = mlxsw_sp_acl_ruleset_create(mlxsw_sp, ops);
if (IS_ERR(ruleset))
return ruleset;
err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, ruleset, dev, ingress);
if (err)
goto err_ruleset_bind;
return ruleset;
err_ruleset_bind:
mlxsw_sp_acl_ruleset_destroy(mlxsw_sp, ruleset);
return ERR_PTR(err);
}
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void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset)
{
mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
}
Contributors
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struct mlxsw_sp_acl_rule_info *
mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl)
{
struct mlxsw_sp_acl_rule_info *rulei;
int err;
rulei = kzalloc(sizeof(*rulei), GFP_KERNEL);
if (!rulei)
return NULL;
rulei->act_block = mlxsw_afa_block_create(acl->afa);
if (IS_ERR(rulei->act_block)) {
err = PTR_ERR(rulei->act_block);
goto err_afa_block_create;
}
return rulei;
err_afa_block_create:
kfree(rulei);
return ERR_PTR(err);
}
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void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei)
{
mlxsw_afa_block_destroy(rulei->act_block);
kfree(rulei);
}
Contributors
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int mlxsw_sp_acl_rulei_commit(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_commit(rulei->act_block);
}
Contributors
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void mlxsw_sp_acl_rulei_priority(struct mlxsw_sp_acl_rule_info *rulei,
unsigned int priority)
{
rulei->priority = priority;
}
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void mlxsw_sp_acl_rulei_keymask_u32(struct mlxsw_sp_acl_rule_info *rulei,
enum mlxsw_afk_element element,
u32 key_value, u32 mask_value)
{
mlxsw_afk_values_add_u32(&rulei->values, element,
key_value, mask_value);
}
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void mlxsw_sp_acl_rulei_keymask_buf(struct mlxsw_sp_acl_rule_info *rulei,
enum mlxsw_afk_element element,
const char *key_value,
const char *mask_value, unsigned int len)
{
mlxsw_afk_values_add_buf(&rulei->values, element,
key_value, mask_value, len);
}
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void mlxsw_sp_acl_rulei_act_continue(struct mlxsw_sp_acl_rule_info *rulei)
{
mlxsw_afa_block_continue(rulei->act_block);
}
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void mlxsw_sp_acl_rulei_act_jump(struct mlxsw_sp_acl_rule_info *rulei,
u16 group_id)
{
mlxsw_afa_block_jump(rulei->act_block, group_id);
}
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int mlxsw_sp_acl_rulei_act_drop(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_append_drop(rulei->act_block);
}
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int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct net_device *out_dev)
{
struct mlxsw_sp_port *mlxsw_sp_port;
u8 local_port;
bool in_port;
if (out_dev) {
if (!mlxsw_sp_port_dev_check(out_dev))
return -EINVAL;
mlxsw_sp_port = netdev_priv(out_dev);
if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp)
return -EINVAL;
local_port = mlxsw_sp_port->local_port;
in_port = false;
} else {
/* If out_dev is NULL, the called wants to
* set forward to ingress port.
*/
local_port = 0;
in_port = true;
}
return mlxsw_afa_block_append_fwd(rulei->act_block,
local_port, in_port);
}
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struct mlxsw_sp_acl_rule *
mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
unsigned long cookie)
{
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
struct mlxsw_sp_acl_rule *rule;
int err;
mlxsw_sp_acl_ruleset_ref_inc(ruleset);
rule = kzalloc(sizeof(*rule) + ops->rule_priv_size, GFP_KERNEL);
if (!rule) {
err = -ENOMEM;
goto err_alloc;
}
rule->cookie = cookie;
rule->ruleset = ruleset;
rule->rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl);
if (IS_ERR(rule->rulei)) {
err = PTR_ERR(rule->rulei);
goto err_rulei_create;
}
return rule;
err_rulei_create:
kfree(rule);
err_alloc:
mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
return ERR_PTR(err);
}
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void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule)
{
struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
mlxsw_sp_acl_rulei_destroy(rule->rulei);
kfree(rule);
mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
}
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int mlxsw_sp_acl_rule_add(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule)
{
struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
int err;
err = ops->rule_add(mlxsw_sp, ruleset->priv, rule->priv, rule->rulei);
if (err)
return err;
err = rhashtable_insert_fast(&ruleset->rule_ht, &rule->ht_node,
mlxsw_sp_acl_rule_ht_params);
if (err)
goto err_rhashtable_insert;
return 0;
err_rhashtable_insert:
ops->rule_del(mlxsw_sp, rule->priv);
return err;
}
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void mlxsw_sp_acl_rule_del(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule)
{
struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
mlxsw_sp_acl_rule_ht_params);
ops->rule_del(mlxsw_sp, rule->priv);
}
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struct mlxsw_sp_acl_rule *
mlxsw_sp_acl_rule_lookup(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
unsigned long cookie)
{
return rhashtable_lookup_fast(&ruleset->rule_ht, &cookie,
mlxsw_sp_acl_rule_ht_params);
}
Contributors
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Jiri Pirko | 35 | 100.00% | 1 | 100.00% |
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struct mlxsw_sp_acl_rule_info *
mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule)
{
return rule->rulei;
}
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#define MLXSW_SP_KDVL_ACT_EXT_SIZE 1
static int mlxsw_sp_act_kvdl_set_add(void *priv, u32 *p_kvdl_index,
char *enc_actions, bool is_first)
{
struct mlxsw_sp *mlxsw_sp = priv;
char pefa_pl[MLXSW_REG_PEFA_LEN];
u32 kvdl_index;
int ret;
int err;
/* The first action set of a TCAM entry is stored directly in TCAM,
* not KVD linear area.
*/
if (is_first)
return 0;
ret = mlxsw_sp_kvdl_alloc(mlxsw_sp, MLXSW_SP_KDVL_ACT_EXT_SIZE);
if (ret < 0)
return ret;
kvdl_index = ret;
mlxsw_reg_pefa_pack(pefa_pl, kvdl_index, enc_actions);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(pefa), pefa_pl);
if (err)
goto err_pefa_write;
*p_kvdl_index = kvdl_index;
return 0;
err_pefa_write:
mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index);
return err;
}
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static void mlxsw_sp_act_kvdl_set_del(void *priv, u32 kvdl_index,
bool is_first)
{
struct mlxsw_sp *mlxsw_sp = priv;
if (is_first)
return;
mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index);
}
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static int mlxsw_sp_act_kvdl_fwd_entry_add(void *priv, u32 *p_kvdl_index,
u8 local_port)
{
struct mlxsw_sp *mlxsw_sp = priv;
char ppbs_pl[MLXSW_REG_PPBS_LEN];
u32 kvdl_index;
int ret;
int err;
ret = mlxsw_sp_kvdl_alloc(mlxsw_sp, 1);
if (ret < 0)
return ret;
kvdl_index = ret;
mlxsw_reg_ppbs_pack(ppbs_pl, kvdl_index, local_port);
err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ppbs), ppbs_pl);
if (err)
goto err_ppbs_write;
*p_kvdl_index = kvdl_index;
return 0;
err_ppbs_write:
mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index);
return err;
}
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static void mlxsw_sp_act_kvdl_fwd_entry_del(void *priv, u32 kvdl_index)
{
struct mlxsw_sp *mlxsw_sp = priv;
mlxsw_sp_kvdl_free(mlxsw_sp, kvdl_index);
}
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static const struct mlxsw_afa_ops mlxsw_sp_act_afa_ops = {
.kvdl_set_add = mlxsw_sp_act_kvdl_set_add,
.kvdl_set_del = mlxsw_sp_act_kvdl_set_del,
.kvdl_fwd_entry_add = mlxsw_sp_act_kvdl_fwd_entry_add,
.kvdl_fwd_entry_del = mlxsw_sp_act_kvdl_fwd_entry_del,
};
int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp)
{
const struct mlxsw_sp_acl_ops *acl_ops = &mlxsw_sp_acl_tcam_ops;
struct mlxsw_sp_acl *acl;
int err;
acl = kzalloc(sizeof(*acl) + acl_ops->priv_size, GFP_KERNEL);
if (!acl)
return -ENOMEM;
mlxsw_sp->acl = acl;
acl->afk = mlxsw_afk_create(MLXSW_CORE_RES_GET(mlxsw_sp->core,
ACL_FLEX_KEYS),
mlxsw_sp_afk_blocks,
MLXSW_SP_AFK_BLOCKS_COUNT);
if (!acl->afk) {
err = -ENOMEM;
goto err_afk_create;
}
acl->afa = mlxsw_afa_create(MLXSW_CORE_RES_GET(mlxsw_sp->core,
ACL_ACTIONS_PER_SET),
&mlxsw_sp_act_afa_ops, mlxsw_sp);
if (IS_ERR(acl->afa)) {
err = PTR_ERR(acl->afa);
goto err_afa_create;
}
err = rhashtable_init(&acl->ruleset_ht,
&mlxsw_sp_acl_ruleset_ht_params);
if (err)
goto err_rhashtable_init;
err = acl_ops->init(mlxsw_sp, acl->priv);
if (err)
goto err_acl_ops_init;
acl->ops = acl_ops;
return 0;
err_acl_ops_init:
rhashtable_destroy(&acl->ruleset_ht);
err_rhashtable_init:
mlxsw_afa_destroy(acl->afa);
err_afa_create:
mlxsw_afk_destroy(acl->afk);
err_afk_create:
kfree(acl);
return err;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 227 | 100.00% | 1 | 100.00% |
Total | 227 | 100.00% | 1 | 100.00% |
void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
const struct mlxsw_sp_acl_ops *acl_ops = acl->ops;
acl_ops->fini(mlxsw_sp, acl->priv);
rhashtable_destroy(&acl->ruleset_ht);
mlxsw_afa_destroy(acl->afa);
mlxsw_afk_destroy(acl->afk);
kfree(acl);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 67 | 100.00% | 1 | 100.00% |
Total | 67 | 100.00% | 1 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jiri Pirko | 2369 | 100.00% | 1 | 100.00% |
Total | 2369 | 100.00% | 1 | 100.00% |
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