blob: 79b1fa27a9a439301a544f621367f8b925cdf52d [file] [log] [blame]
/*
* 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 <net/net_namespace.h>
#include <net/tc_act/tc_vlan.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_sp *mlxsw_sp;
struct mlxsw_afk *afk;
struct mlxsw_sp_fid *dummy_fid;
const struct mlxsw_sp_acl_ops *ops;
struct rhashtable ruleset_ht;
struct list_head rules;
struct {
struct delayed_work dw;
unsigned long interval; /* ms */
#define MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS 1000
} rule_activity_update;
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;
}
struct mlxsw_sp_acl_block_binding {
struct list_head list;
struct net_device *dev;
struct mlxsw_sp_port *mlxsw_sp_port;
bool ingress;
};
struct mlxsw_sp_acl_block {
struct list_head binding_list;
struct mlxsw_sp_acl_ruleset *ruleset_zero;
struct mlxsw_sp *mlxsw_sp;
unsigned int rule_count;
unsigned int disable_count;
};
struct mlxsw_sp_acl_ruleset_ht_key {
struct mlxsw_sp_acl_block *block;
u32 chain_index;
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 */
struct list_head list;
unsigned long cookie; /* HT key */
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule_info *rulei;
u64 last_used;
u64 last_packets;
u64 last_bytes;
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,
};
struct mlxsw_sp_fid *mlxsw_sp_acl_dummy_fid(struct mlxsw_sp *mlxsw_sp)
{
return mlxsw_sp->acl->dummy_fid;
}
struct mlxsw_sp *mlxsw_sp_acl_block_mlxsw_sp(struct mlxsw_sp_acl_block *block)
{
return block->mlxsw_sp;
}
unsigned int mlxsw_sp_acl_block_rule_count(struct mlxsw_sp_acl_block *block)
{
return block ? block->rule_count : 0;
}
void mlxsw_sp_acl_block_disable_inc(struct mlxsw_sp_acl_block *block)
{
if (block)
block->disable_count++;
}
void mlxsw_sp_acl_block_disable_dec(struct mlxsw_sp_acl_block *block)
{
if (block)
block->disable_count--;
}
bool mlxsw_sp_acl_block_disabled(struct mlxsw_sp_acl_block *block)
{
return block->disable_count;
}
static bool
mlxsw_sp_acl_ruleset_is_singular(const struct mlxsw_sp_acl_ruleset *ruleset)
{
/* We hold a reference on ruleset ourselves */
return ruleset->ref_count == 2;
}
static int
mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct mlxsw_sp_acl_block_binding *binding)
{
struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero;
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
return ops->ruleset_bind(mlxsw_sp, ruleset->priv,
binding->mlxsw_sp_port, binding->ingress);
}
static void
mlxsw_sp_acl_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct mlxsw_sp_acl_block_binding *binding)
{
struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero;
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
ops->ruleset_unbind(mlxsw_sp, ruleset->priv,
binding->mlxsw_sp_port, binding->ingress);
}
static bool mlxsw_sp_acl_ruleset_block_bound(struct mlxsw_sp_acl_block *block)
{
return block->ruleset_zero;
}
static int
mlxsw_sp_acl_ruleset_block_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
struct mlxsw_sp_acl_block *block)
{
struct mlxsw_sp_acl_block_binding *binding;
int err;
block->ruleset_zero = ruleset;
list_for_each_entry(binding, &block->binding_list, list) {
err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding);
if (err)
goto rollback;
}
return 0;
rollback:
list_for_each_entry_continue_reverse(binding, &block->binding_list,
list)
mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
block->ruleset_zero = NULL;
return err;
}
static void
mlxsw_sp_acl_ruleset_block_unbind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
struct mlxsw_sp_acl_block *block)
{
struct mlxsw_sp_acl_block_binding *binding;
list_for_each_entry(binding, &block->binding_list, list)
mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
block->ruleset_zero = NULL;
}
struct mlxsw_sp_acl_block *mlxsw_sp_acl_block_create(struct mlxsw_sp *mlxsw_sp,
struct net *net)
{
struct mlxsw_sp_acl_block *block;
block = kzalloc(sizeof(*block), GFP_KERNEL);
if (!block)
return NULL;
INIT_LIST_HEAD(&block->binding_list);
block->mlxsw_sp = mlxsw_sp;
return block;
}
void mlxsw_sp_acl_block_destroy(struct mlxsw_sp_acl_block *block)
{
WARN_ON(!list_empty(&block->binding_list));
kfree(block);
}
static struct mlxsw_sp_acl_block_binding *
mlxsw_sp_acl_block_lookup(struct mlxsw_sp_acl_block *block,
struct mlxsw_sp_port *mlxsw_sp_port, bool ingress)
{
struct mlxsw_sp_acl_block_binding *binding;
list_for_each_entry(binding, &block->binding_list, list)
if (binding->mlxsw_sp_port == mlxsw_sp_port &&
binding->ingress == ingress)
return binding;
return NULL;
}
int mlxsw_sp_acl_block_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct mlxsw_sp_port *mlxsw_sp_port,
bool ingress)
{
struct mlxsw_sp_acl_block_binding *binding;
int err;
if (WARN_ON(mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress)))
return -EEXIST;
binding = kzalloc(sizeof(*binding), GFP_KERNEL);
if (!binding)
return -ENOMEM;
binding->mlxsw_sp_port = mlxsw_sp_port;
binding->ingress = ingress;
if (mlxsw_sp_acl_ruleset_block_bound(block)) {
err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding);
if (err)
goto err_ruleset_bind;
}
list_add(&binding->list, &block->binding_list);
return 0;
err_ruleset_bind:
kfree(binding);
return err;
}
int mlxsw_sp_acl_block_unbind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block,
struct mlxsw_sp_port *mlxsw_sp_port,
bool ingress)
{
struct mlxsw_sp_acl_block_binding *binding;
binding = mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress);
if (!binding)
return -ENOENT;
list_del(&binding->list);
if (mlxsw_sp_acl_ruleset_block_bound(block))
mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
kfree(binding);
return 0;
}
static struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
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.block = block;
ruleset->ht_key.chain_index = chain_index;
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;
err = rhashtable_insert_fast(&acl->ruleset_ht, &ruleset->ht_node,
mlxsw_sp_acl_ruleset_ht_params);
if (err)
goto err_ht_insert;
return ruleset;
err_ht_insert:
ops->ruleset_del(mlxsw_sp, ruleset->priv);
err_ops_ruleset_add:
rhashtable_destroy(&ruleset->rule_ht);
err_rhashtable_init:
kfree(ruleset);
return ERR_PTR(err);
}
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;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node,
mlxsw_sp_acl_ruleset_ht_params);
ops->ruleset_del(mlxsw_sp, ruleset->priv);
rhashtable_destroy(&ruleset->rule_ht);
kfree(ruleset);
}
static void mlxsw_sp_acl_ruleset_ref_inc(struct mlxsw_sp_acl_ruleset *ruleset)
{
ruleset->ref_count++;
}
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_destroy(mlxsw_sp, ruleset);
}
static struct mlxsw_sp_acl_ruleset *
__mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp_acl *acl,
struct mlxsw_sp_acl_block *block, u32 chain_index,
const struct mlxsw_sp_acl_profile_ops *ops)
{
struct mlxsw_sp_acl_ruleset_ht_key ht_key;
memset(&ht_key, 0, sizeof(ht_key));
ht_key.block = block;
ht_key.chain_index = chain_index;
ht_key.ops = ops;
return rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
mlxsw_sp_acl_ruleset_ht_params);
}
struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
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 *ruleset;
ops = acl->ops->profile_ops(mlxsw_sp, profile);
if (!ops)
return ERR_PTR(-EINVAL);
ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops);
if (!ruleset)
return ERR_PTR(-ENOENT);
return ruleset;
}
struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_block *block, u32 chain_index,
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 *ruleset;
ops = acl->ops->profile_ops(mlxsw_sp, profile);
if (!ops)
return ERR_PTR(-EINVAL);
ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops);
if (ruleset) {
mlxsw_sp_acl_ruleset_ref_inc(ruleset);
return ruleset;
}
return mlxsw_sp_acl_ruleset_create(mlxsw_sp, block, chain_index, ops);
}
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);
}
u16 mlxsw_sp_acl_ruleset_group_id(struct mlxsw_sp_acl_ruleset *ruleset)
{
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
return ops->ruleset_group_id(ruleset->priv);
}
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->mlxsw_sp->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);
}
void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei)
{
mlxsw_afa_block_destroy(rulei->act_block);
kfree(rulei);
}
int mlxsw_sp_acl_rulei_commit(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_commit(rulei->act_block);
}
void mlxsw_sp_acl_rulei_priority(struct mlxsw_sp_acl_rule_info *rulei,
unsigned int priority)
{
rulei->priority = priority;
}
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);
}
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);
}
int mlxsw_sp_acl_rulei_act_continue(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_continue(rulei->act_block);
}
int mlxsw_sp_acl_rulei_act_jump(struct mlxsw_sp_acl_rule_info *rulei,
u16 group_id)
{
return mlxsw_afa_block_jump(rulei->act_block, group_id);
}
int mlxsw_sp_acl_rulei_act_terminate(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_terminate(rulei->act_block);
}
int mlxsw_sp_acl_rulei_act_drop(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_append_drop(rulei->act_block);
}
int mlxsw_sp_acl_rulei_act_trap(struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_append_trap(rulei->act_block,
MLXSW_TRAP_ID_ACL0);
}
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 caller 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);
}
int mlxsw_sp_acl_rulei_act_mirror(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_acl_block *block,
struct net_device *out_dev)
{
struct mlxsw_sp_acl_block_binding *binding;
struct mlxsw_sp_port *in_port;
if (!list_is_singular(&block->binding_list))
return -EOPNOTSUPP;
binding = list_first_entry(&block->binding_list,
struct mlxsw_sp_acl_block_binding, list);
in_port = binding->mlxsw_sp_port;
return mlxsw_afa_block_append_mirror(rulei->act_block,
in_port->local_port,
out_dev,
binding->ingress);
}
int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u32 action, u16 vid, u16 proto, u8 prio)
{
u8 ethertype;
if (action == TCA_VLAN_ACT_MODIFY) {
switch (proto) {
case ETH_P_8021Q:
ethertype = 0;
break;
case ETH_P_8021AD:
ethertype = 1;
break;
default:
dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN protocol %#04x\n",
proto);
return -EINVAL;
}
return mlxsw_afa_block_append_vlan_modify(rulei->act_block,
vid, prio, ethertype);
} else {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n");
return -EINVAL;
}
}
int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei)
{
return mlxsw_afa_block_append_counter(rulei->act_block,
&rulei->counter_index);
}
int mlxsw_sp_acl_rulei_act_fid_set(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u16 fid)
{
return mlxsw_afa_block_append_fid_set(rulei->act_block, fid);
}
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);
}
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);
}
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;
if (!ruleset->ht_key.chain_index &&
mlxsw_sp_acl_ruleset_is_singular(ruleset)) {
/* We only need ruleset with chain index 0, the implicit
* one, to be directly bound to device. The rest of the
* rulesets are bound by "Goto action set".
*/
err = mlxsw_sp_acl_ruleset_block_bind(mlxsw_sp, ruleset,
ruleset->ht_key.block);
if (err)
goto err_ruleset_block_bind;
}
list_add_tail(&rule->list, &mlxsw_sp->acl->rules);
ruleset->ht_key.block->rule_count++;
return 0;
err_ruleset_block_bind:
rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
mlxsw_sp_acl_rule_ht_params);
err_rhashtable_insert:
ops->rule_del(mlxsw_sp, rule->priv);
return err;
}
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;
ruleset->ht_key.block->rule_count--;
list_del(&rule->list);
if (!ruleset->ht_key.chain_index &&
mlxsw_sp_acl_ruleset_is_singular(ruleset))
mlxsw_sp_acl_ruleset_block_unbind(mlxsw_sp, ruleset,
ruleset->ht_key.block);
rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
mlxsw_sp_acl_rule_ht_params);
ops->rule_del(mlxsw_sp, rule->priv);
}
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);
}
struct mlxsw_sp_acl_rule_info *
mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule)
{
return rule->rulei;
}
static int mlxsw_sp_acl_rule_activity_update(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;
bool active;
int err;
err = ops->rule_activity_get(mlxsw_sp, rule->priv, &active);
if (err)
return err;
if (active)
rule->last_used = jiffies;
return 0;
}
static int mlxsw_sp_acl_rules_activity_update(struct mlxsw_sp_acl *acl)
{
struct mlxsw_sp_acl_rule *rule;
int err;
/* Protect internal structures from changes */
rtnl_lock();
list_for_each_entry(rule, &acl->rules, list) {
err = mlxsw_sp_acl_rule_activity_update(acl->mlxsw_sp,
rule);
if (err)
goto err_rule_update;
}
rtnl_unlock();
return 0;
err_rule_update:
rtnl_unlock();
return err;
}
static void mlxsw_sp_acl_rule_activity_work_schedule(struct mlxsw_sp_acl *acl)
{
unsigned long interval = acl->rule_activity_update.interval;
mlxsw_core_schedule_dw(&acl->rule_activity_update.dw,
msecs_to_jiffies(interval));
}
static void mlxsw_sp_acl_rul_activity_update_work(struct work_struct *work)
{
struct mlxsw_sp_acl *acl = container_of(work, struct mlxsw_sp_acl,
rule_activity_update.dw.work);
int err;
err = mlxsw_sp_acl_rules_activity_update(acl);
if (err)
dev_err(acl->mlxsw_sp->bus_info->dev, "Could not update acl activity");
mlxsw_sp_acl_rule_activity_work_schedule(acl);
}
int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule,
u64 *packets, u64 *bytes, u64 *last_use)
{
struct mlxsw_sp_acl_rule_info *rulei;
u64 current_packets;
u64 current_bytes;
int err;
rulei = mlxsw_sp_acl_rule_rulei(rule);
err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
&current_packets, &current_bytes);
if (err)
return err;
*packets = current_packets - rule->last_packets;
*bytes = current_bytes - rule->last_bytes;
*last_use = rule->last_used;
rule->last_bytes = current_bytes;
rule->last_packets = current_packets;
return 0;
}
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_fid *fid;
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->mlxsw_sp = mlxsw_sp;
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;
}
err = rhashtable_init(&acl->ruleset_ht,
&mlxsw_sp_acl_ruleset_ht_params);
if (err)
goto err_rhashtable_init;
fid = mlxsw_sp_fid_dummy_get(mlxsw_sp);
if (IS_ERR(fid)) {
err = PTR_ERR(fid);
goto err_fid_get;
}
acl->dummy_fid = fid;
INIT_LIST_HEAD(&acl->rules);
err = acl_ops->init(mlxsw_sp, acl->priv);
if (err)
goto err_acl_ops_init;
acl->ops = acl_ops;
/* Create the delayed work for the rule activity_update */
INIT_DELAYED_WORK(&acl->rule_activity_update.dw,
mlxsw_sp_acl_rul_activity_update_work);
acl->rule_activity_update.interval = MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS;
mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, 0);
return 0;
err_acl_ops_init:
mlxsw_sp_fid_put(fid);
err_fid_get:
rhashtable_destroy(&acl->ruleset_ht);
err_rhashtable_init:
mlxsw_afk_destroy(acl->afk);
err_afk_create:
kfree(acl);
return err;
}
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;
cancel_delayed_work_sync(&mlxsw_sp->acl->rule_activity_update.dw);
acl_ops->fini(mlxsw_sp, acl->priv);
WARN_ON(!list_empty(&acl->rules));
mlxsw_sp_fid_put(acl->dummy_fid);
rhashtable_destroy(&acl->ruleset_ht);
mlxsw_afk_destroy(acl->afk);
kfree(acl);
}