blob: 70c11bfac08f34c3e19657d2da95252902f6d834 [file] [log] [blame]
// 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/list.h>
#include <linux/string.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include <linux/mutex.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_tcam.h"
struct mlxsw_sp_acl {
struct mlxsw_sp *mlxsw_sp;
struct mlxsw_afk *afk;
struct mlxsw_sp_fid *dummy_fid;
struct rhashtable ruleset_ht;
struct list_head rules;
struct mutex rules_lock; /* Protects rules list */
struct {
struct delayed_work dw;
unsigned long interval; /* ms */
#define MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS 1000
} rule_activity_update;
struct mlxsw_sp_acl_tcam tcam;
};
struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl)
{
return acl->afk;
}
struct mlxsw_sp_acl_ruleset_ht_key {
struct mlxsw_sp_flow_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 int min_prio;
unsigned int max_prio;
unsigned long priv[];
/* 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;
u64 last_drops;
unsigned long priv[];
/* 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;
}
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;
}
int mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct mlxsw_sp_flow_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);
}
void mlxsw_sp_acl_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct mlxsw_sp_flow_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 int
mlxsw_sp_acl_ruleset_block_bind(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
struct mlxsw_sp_flow_block *block)
{
struct mlxsw_sp_flow_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_flow_block *block)
{
struct mlxsw_sp_flow_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;
}
static struct mlxsw_sp_acl_ruleset *
mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block, u32 chain_index,
const struct mlxsw_sp_acl_profile_ops *ops,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
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->tcam, ruleset->priv,
tmplt_elusage, &ruleset->min_prio,
&ruleset->max_prio);
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_flow_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_flow_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 = mlxsw_sp_acl_tcam_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_flow_block *block, u32 chain_index,
enum mlxsw_sp_acl_profile profile,
struct mlxsw_afk_element_usage *tmplt_elusage)
{
const struct mlxsw_sp_acl_profile_ops *ops;
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
struct mlxsw_sp_acl_ruleset *ruleset;
ops = mlxsw_sp_acl_tcam_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,
tmplt_elusage);
}
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);
}
void mlxsw_sp_acl_ruleset_prio_get(struct mlxsw_sp_acl_ruleset *ruleset,
unsigned int *p_min_prio,
unsigned int *p_max_prio)
{
*p_min_prio = ruleset->min_prio;
*p_max_prio = ruleset->max_prio;
}
struct mlxsw_sp_acl_rule_info *
mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl,
struct mlxsw_afa_block *afa_block)
{
struct mlxsw_sp_acl_rule_info *rulei;
int err;
rulei = kzalloc(sizeof(*rulei), GFP_KERNEL);
if (!rulei)
return ERR_PTR(-ENOMEM);
if (afa_block) {
rulei->act_block = afa_block;
return rulei;
}
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;
}
rulei->action_created = 1;
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)
{
if (rulei->action_created)
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,
bool ingress,
const struct flow_action_cookie *fa_cookie,
struct netlink_ext_ack *extack)
{
return mlxsw_afa_block_append_drop(rulei->act_block, ingress,
fa_cookie, extack);
}
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 netlink_ext_ack *extack)
{
struct mlxsw_sp_port *mlxsw_sp_port;
u16 local_port;
bool in_port;
if (out_dev) {
if (!mlxsw_sp_port_dev_check(out_dev)) {
NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
return -EINVAL;
}
mlxsw_sp_port = netdev_priv(out_dev);
if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp) {
NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
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, extack);
}
int mlxsw_sp_acl_rulei_act_mirror(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_flow_block *block,
struct net_device *out_dev,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_flow_block_binding *binding;
struct mlxsw_sp_port *in_port;
if (!list_is_singular(&block->binding_list)) {
NL_SET_ERR_MSG_MOD(extack, "Only a single mirror source is allowed");
return -EOPNOTSUPP;
}
binding = list_first_entry(&block->binding_list,
struct mlxsw_sp_flow_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,
extack);
}
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,
struct netlink_ext_ack *extack)
{
u8 ethertype;
if (action == FLOW_ACTION_VLAN_MANGLE) {
switch (proto) {
case ETH_P_8021Q:
ethertype = 0;
break;
case ETH_P_8021AD:
ethertype = 1;
break;
default:
NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN protocol");
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,
extack);
} else {
NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN action");
dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n");
return -EINVAL;
}
}
int mlxsw_sp_acl_rulei_act_priority(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u32 prio, struct netlink_ext_ack *extack)
{
/* Even though both Linux and Spectrum switches support 16 priorities,
* spectrum_qdisc only processes the first eight priomap elements, and
* the DCB and PFC features are tied to 8 priorities as well. Therefore
* bounce attempts to prioritize packets to higher priorities.
*/
if (prio >= IEEE_8021QAZ_MAX_TCS) {
NL_SET_ERR_MSG_MOD(extack, "Only priorities 0..7 are supported");
return -EINVAL;
}
return mlxsw_afa_block_append_qos_switch_prio(rulei->act_block, prio,
extack);
}
enum mlxsw_sp_acl_mangle_field {
MLXSW_SP_ACL_MANGLE_FIELD_IP_DSFIELD,
MLXSW_SP_ACL_MANGLE_FIELD_IP_DSCP,
MLXSW_SP_ACL_MANGLE_FIELD_IP_ECN,
MLXSW_SP_ACL_MANGLE_FIELD_IP_SPORT,
MLXSW_SP_ACL_MANGLE_FIELD_IP_DPORT,
};
struct mlxsw_sp_acl_mangle_action {
enum flow_action_mangle_base htype;
/* Offset is u32-aligned. */
u32 offset;
/* Mask bits are unset for the modified field. */
u32 mask;
/* Shift required to extract the set value. */
u32 shift;
enum mlxsw_sp_acl_mangle_field field;
};
#define MLXSW_SP_ACL_MANGLE_ACTION(_htype, _offset, _mask, _shift, _field) \
{ \
.htype = _htype, \
.offset = _offset, \
.mask = _mask, \
.shift = _shift, \
.field = MLXSW_SP_ACL_MANGLE_FIELD_##_field, \
}
#define MLXSW_SP_ACL_MANGLE_ACTION_IP4(_offset, _mask, _shift, _field) \
MLXSW_SP_ACL_MANGLE_ACTION(FLOW_ACT_MANGLE_HDR_TYPE_IP4, \
_offset, _mask, _shift, _field)
#define MLXSW_SP_ACL_MANGLE_ACTION_IP6(_offset, _mask, _shift, _field) \
MLXSW_SP_ACL_MANGLE_ACTION(FLOW_ACT_MANGLE_HDR_TYPE_IP6, \
_offset, _mask, _shift, _field)
#define MLXSW_SP_ACL_MANGLE_ACTION_TCP(_offset, _mask, _shift, _field) \
MLXSW_SP_ACL_MANGLE_ACTION(FLOW_ACT_MANGLE_HDR_TYPE_TCP, _offset, _mask, _shift, _field)
#define MLXSW_SP_ACL_MANGLE_ACTION_UDP(_offset, _mask, _shift, _field) \
MLXSW_SP_ACL_MANGLE_ACTION(FLOW_ACT_MANGLE_HDR_TYPE_UDP, _offset, _mask, _shift, _field)
static struct mlxsw_sp_acl_mangle_action mlxsw_sp_acl_mangle_actions[] = {
MLXSW_SP_ACL_MANGLE_ACTION_IP4(0, 0xff00ffff, 16, IP_DSFIELD),
MLXSW_SP_ACL_MANGLE_ACTION_IP4(0, 0xff03ffff, 18, IP_DSCP),
MLXSW_SP_ACL_MANGLE_ACTION_IP4(0, 0xfffcffff, 16, IP_ECN),
MLXSW_SP_ACL_MANGLE_ACTION_IP6(0, 0xf00fffff, 20, IP_DSFIELD),
MLXSW_SP_ACL_MANGLE_ACTION_IP6(0, 0xf03fffff, 22, IP_DSCP),
MLXSW_SP_ACL_MANGLE_ACTION_IP6(0, 0xffcfffff, 20, IP_ECN),
MLXSW_SP_ACL_MANGLE_ACTION_TCP(0, 0x0000ffff, 16, IP_SPORT),
MLXSW_SP_ACL_MANGLE_ACTION_TCP(0, 0xffff0000, 0, IP_DPORT),
MLXSW_SP_ACL_MANGLE_ACTION_UDP(0, 0x0000ffff, 16, IP_SPORT),
MLXSW_SP_ACL_MANGLE_ACTION_UDP(0, 0xffff0000, 0, IP_DPORT),
};
static int
mlxsw_sp_acl_rulei_act_mangle_field(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_acl_mangle_action *mact,
u32 val, struct netlink_ext_ack *extack)
{
switch (mact->field) {
case MLXSW_SP_ACL_MANGLE_FIELD_IP_DSFIELD:
return mlxsw_afa_block_append_qos_dsfield(rulei->act_block,
val, extack);
case MLXSW_SP_ACL_MANGLE_FIELD_IP_DSCP:
return mlxsw_afa_block_append_qos_dscp(rulei->act_block,
val, extack);
case MLXSW_SP_ACL_MANGLE_FIELD_IP_ECN:
return mlxsw_afa_block_append_qos_ecn(rulei->act_block,
val, extack);
default:
return -EOPNOTSUPP;
}
}
static int mlxsw_sp1_acl_rulei_act_mangle_field(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_acl_mangle_action *mact,
u32 val, struct netlink_ext_ack *extack)
{
int err;
err = mlxsw_sp_acl_rulei_act_mangle_field(mlxsw_sp, rulei, mact, val, extack);
if (err != -EOPNOTSUPP)
return err;
NL_SET_ERR_MSG_MOD(extack, "Unsupported mangle field");
return err;
}
static int mlxsw_sp2_acl_rulei_act_mangle_field(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_acl_mangle_action *mact,
u32 val, struct netlink_ext_ack *extack)
{
int err;
err = mlxsw_sp_acl_rulei_act_mangle_field(mlxsw_sp, rulei, mact, val, extack);
if (err != -EOPNOTSUPP)
return err;
switch (mact->field) {
case MLXSW_SP_ACL_MANGLE_FIELD_IP_SPORT:
return mlxsw_afa_block_append_l4port(rulei->act_block, false, val, extack);
case MLXSW_SP_ACL_MANGLE_FIELD_IP_DPORT:
return mlxsw_afa_block_append_l4port(rulei->act_block, true, val, extack);
default:
break;
}
NL_SET_ERR_MSG_MOD(extack, "Unsupported mangle field");
return err;
}
int mlxsw_sp_acl_rulei_act_mangle(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
enum flow_action_mangle_base htype,
u32 offset, u32 mask, u32 val,
struct netlink_ext_ack *extack)
{
const struct mlxsw_sp_acl_rulei_ops *acl_rulei_ops = mlxsw_sp->acl_rulei_ops;
struct mlxsw_sp_acl_mangle_action *mact;
size_t i;
for (i = 0; i < ARRAY_SIZE(mlxsw_sp_acl_mangle_actions); ++i) {
mact = &mlxsw_sp_acl_mangle_actions[i];
if (mact->htype == htype &&
mact->offset == offset &&
mact->mask == mask) {
val >>= mact->shift;
return acl_rulei_ops->act_mangle_field(mlxsw_sp,
rulei, mact,
val, extack);
}
}
NL_SET_ERR_MSG_MOD(extack, "Unknown mangle field");
return -EINVAL;
}
int mlxsw_sp_acl_rulei_act_police(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u32 index, u64 rate_bytes_ps,
u32 burst, struct netlink_ext_ack *extack)
{
int err;
err = mlxsw_afa_block_append_police(rulei->act_block, index,
rate_bytes_ps, burst,
&rulei->policer_index, extack);
if (err)
return err;
rulei->policer_index_valid = true;
return 0;
}
int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct netlink_ext_ack *extack)
{
int err;
err = mlxsw_afa_block_append_counter(rulei->act_block,
&rulei->counter_index, extack);
if (err)
return err;
rulei->counter_valid = true;
return 0;
}
int mlxsw_sp_acl_rulei_act_fid_set(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
u16 fid, struct netlink_ext_ack *extack)
{
return mlxsw_afa_block_append_fid_set(rulei->act_block, fid, extack);
}
int mlxsw_sp_acl_rulei_act_sample(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct mlxsw_sp_flow_block *block,
struct psample_group *psample_group, u32 rate,
u32 trunc_size, bool truncate,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_flow_block_binding *binding;
struct mlxsw_sp_port *mlxsw_sp_port;
if (!list_is_singular(&block->binding_list)) {
NL_SET_ERR_MSG_MOD(extack, "Only a single sampling source is allowed");
return -EOPNOTSUPP;
}
binding = list_first_entry(&block->binding_list,
struct mlxsw_sp_flow_block_binding, list);
mlxsw_sp_port = binding->mlxsw_sp_port;
return mlxsw_afa_block_append_sampler(rulei->act_block,
mlxsw_sp_port->local_port,
psample_group, rate, trunc_size,
truncate, binding->ingress,
extack);
}
struct mlxsw_sp_acl_rule *
mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_ruleset *ruleset,
unsigned long cookie,
struct mlxsw_afa_block *afa_block,
struct netlink_ext_ack *extack)
{
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, afa_block);
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;
struct mlxsw_sp_flow_block *block = ruleset->ht_key.block;
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, block);
if (err)
goto err_ruleset_block_bind;
}
mutex_lock(&mlxsw_sp->acl->rules_lock);
list_add_tail(&rule->list, &mlxsw_sp->acl->rules);
mutex_unlock(&mlxsw_sp->acl->rules_lock);
block->rule_count++;
block->ingress_blocker_rule_count += rule->rulei->ingress_bind_blocker;
block->egress_blocker_rule_count += rule->rulei->egress_bind_blocker;
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;
struct mlxsw_sp_flow_block *block = ruleset->ht_key.block;
block->egress_blocker_rule_count -= rule->rulei->egress_bind_blocker;
block->ingress_blocker_rule_count -= rule->rulei->ingress_bind_blocker;
block->rule_count--;
mutex_lock(&mlxsw_sp->acl->rules_lock);
list_del(&rule->list);
mutex_unlock(&mlxsw_sp->acl->rules_lock);
if (!ruleset->ht_key.chain_index &&
mlxsw_sp_acl_ruleset_is_singular(ruleset))
mlxsw_sp_acl_ruleset_block_unbind(mlxsw_sp, ruleset, block);
rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
mlxsw_sp_acl_rule_ht_params);
ops->rule_del(mlxsw_sp, rule->priv);
}
int mlxsw_sp_acl_rule_action_replace(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule *rule,
struct mlxsw_afa_block *afa_block)
{
struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
struct mlxsw_sp_acl_rule_info *rulei;
rulei = mlxsw_sp_acl_rule_rulei(rule);
rulei->act_block = afa_block;
return ops->rule_action_replace(mlxsw_sp, rule->priv, rule->rulei);
}
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;
mutex_lock(&acl->rules_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;
}
mutex_unlock(&acl->rules_lock);
return 0;
err_rule_update:
mutex_unlock(&acl->rules_lock);
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_rule_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 *drops,
u64 *last_use,
enum flow_action_hw_stats *used_hw_stats)
{
enum mlxsw_sp_policer_type type = MLXSW_SP_POLICER_TYPE_SINGLE_RATE;
struct mlxsw_sp_acl_rule_info *rulei;
u64 current_packets = 0;
u64 current_bytes = 0;
u64 current_drops = 0;
int err;
rulei = mlxsw_sp_acl_rule_rulei(rule);
if (rulei->counter_valid) {
err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
&current_packets,
&current_bytes);
if (err)
return err;
*used_hw_stats = FLOW_ACTION_HW_STATS_IMMEDIATE;
}
if (rulei->policer_index_valid) {
err = mlxsw_sp_policer_drops_counter_get(mlxsw_sp, type,
rulei->policer_index,
&current_drops);
if (err)
return err;
}
*packets = current_packets - rule->last_packets;
*bytes = current_bytes - rule->last_bytes;
*drops = current_drops - rule->last_drops;
*last_use = rule->last_used;
rule->last_bytes = current_bytes;
rule->last_packets = current_packets;
rule->last_drops = current_drops;
return 0;
}
int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_fid *fid;
struct mlxsw_sp_acl *acl;
size_t alloc_size;
int err;
alloc_size = sizeof(*acl) + mlxsw_sp_acl_tcam_priv_size(mlxsw_sp);
acl = kzalloc(alloc_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_ops);
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);
mutex_init(&acl->rules_lock);
err = mlxsw_sp_acl_tcam_init(mlxsw_sp, &acl->tcam);
if (err)
goto err_acl_ops_init;
/* Create the delayed work for the rule activity_update */
INIT_DELAYED_WORK(&acl->rule_activity_update.dw,
mlxsw_sp_acl_rule_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:
mutex_destroy(&acl->rules_lock);
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;
cancel_delayed_work_sync(&mlxsw_sp->acl->rule_activity_update.dw);
mlxsw_sp_acl_tcam_fini(mlxsw_sp, &acl->tcam);
mutex_destroy(&acl->rules_lock);
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);
}
u32 mlxsw_sp_acl_region_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp)
{
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(mlxsw_sp,
&acl->tcam);
}
int mlxsw_sp_acl_region_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp, u32 val)
{
struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(mlxsw_sp,
&acl->tcam, val);
}
struct mlxsw_sp_acl_rulei_ops mlxsw_sp1_acl_rulei_ops = {
.act_mangle_field = mlxsw_sp1_acl_rulei_act_mangle_field,
};
struct mlxsw_sp_acl_rulei_ops mlxsw_sp2_acl_rulei_ops = {
.act_mangle_field = mlxsw_sp2_acl_rulei_act_mangle_field,
};