almalinux/kernel
14
0
Fork 0
Code Issues Pull Requests Releases Activity
93a7f3b72f
kernel/drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

898 lines
25 KiB
C
Raw Blame History

// 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/errno.h>
#include <linux/netdevice.h>
#include <linux/log2.h>
#include <net/net_namespace.h>
#include <net/flow_dissector.h>
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
#include <net/tc_act/tc_vlan.h>
#include "spectrum.h"
#include "core_acl_flex_keys.h"
static int mlxsw_sp_policer_validate(const struct flow_action *action,
const struct flow_action_entry *act,
struct netlink_ext_ack *extack)
{
if (act->police.exceed.act_id != FLOW_ACTION_DROP) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when exceed action is not drop");
return -EOPNOTSUPP;
}
if (act->police.notexceed.act_id != FLOW_ACTION_PIPE &&
act->police.notexceed.act_id != FLOW_ACTION_ACCEPT) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is not pipe or ok");
return -EOPNOTSUPP;
}
if (act->police.notexceed.act_id == FLOW_ACTION_ACCEPT &&
!flow_action_is_last_entry(action, act)) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is ok, but action is not last");
return -EOPNOTSUPP;
}
if (act->police.peakrate_bytes_ps ||
act->police.avrate || act->police.overhead) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when peakrate/avrate/overhead is configured");
return -EOPNOTSUPP;
}
if (act->police.rate_pkt_ps) {
NL_SET_ERR_MSG_MOD(extack,
"QoS offload not support packets per second");
return -EOPNOTSUPP;
}
return 0;
}
static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_action *flow_action,
struct netlink_ext_ack *extack)
{
const struct flow_action_entry *act;
int mirror_act_count = 0;
int police_act_count = 0;
int sample_act_count = 0;
int err, i;
if (!flow_action_has_entries(flow_action))
return 0;
if (!flow_action_mixed_hw_stats_check(flow_action, extack))
return -EOPNOTSUPP;
act = flow_action_first_entry_get(flow_action);
if (act->hw_stats & FLOW_ACTION_HW_STATS_DISABLED) {
/* Nothing to do */
} else if (act->hw_stats & FLOW_ACTION_HW_STATS_IMMEDIATE) {
/* Count action is inserted first */
err = mlxsw_sp_acl_rulei_act_count(mlxsw_sp, rulei, extack);
if (err)
return err;
} else {
NL_SET_ERR_MSG_MOD(extack, "Unsupported action HW stats type");
return -EOPNOTSUPP;
}
flow_action_for_each(i, act, flow_action) {
switch (act->id) {
case FLOW_ACTION_ACCEPT:
err = mlxsw_sp_acl_rulei_act_terminate(rulei);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Cannot append terminate action");
return err;
}
break;
case FLOW_ACTION_DROP: {
bool ingress;
if (mlxsw_sp_flow_block_is_mixed_bound(block)) {
NL_SET_ERR_MSG_MOD(extack, "Drop action is not supported when block is bound to ingress and egress");
return -EOPNOTSUPP;
}
ingress = mlxsw_sp_flow_block_is_ingress_bound(block);
err = mlxsw_sp_acl_rulei_act_drop(rulei, ingress,
act->user_cookie, extack);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Cannot append drop action");
return err;
}
/* Forbid block with this rulei to be bound
* to ingress/egress in future. Ingress rule is
* a blocker for egress and vice versa.
*/
if (ingress)
rulei->egress_bind_blocker = 1;
else
rulei->ingress_bind_blocker = 1;
}
break;
case FLOW_ACTION_TRAP:
err = mlxsw_sp_acl_rulei_act_trap(rulei);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Cannot append trap action");
return err;
}
break;
case FLOW_ACTION_GOTO: {
u32 chain_index = act->chain_index;
struct mlxsw_sp_acl_ruleset *ruleset;
u16 group_id;
ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block,
chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (IS_ERR(ruleset))
return PTR_ERR(ruleset);
group_id = mlxsw_sp_acl_ruleset_group_id(ruleset);
err = mlxsw_sp_acl_rulei_act_jump(rulei, group_id);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Cannot append jump action");
return err;
}
}
break;
case FLOW_ACTION_REDIRECT: {
struct net_device *out_dev;
struct mlxsw_sp_fid *fid;
u16 fid_index;
if (mlxsw_sp_flow_block_is_egress_bound(block)) {
NL_SET_ERR_MSG_MOD(extack, "Redirect action is not supported on egress");
return -EOPNOTSUPP;
}
/* Forbid block with this rulei to be bound
* to egress in future.
*/
rulei->egress_bind_blocker = 1;
/* Ignore learning and security lookup as redirection
* using ingress filters happens before the bridge.
*/
err = mlxsw_sp_acl_rulei_act_ignore(mlxsw_sp, rulei,
true, true);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Cannot append ignore action");
return err;
}
fid = mlxsw_sp_acl_dummy_fid(mlxsw_sp);
fid_index = mlxsw_sp_fid_index(fid);
err = mlxsw_sp_acl_rulei_act_fid_set(mlxsw_sp, rulei,
fid_index, extack);
if (err)
return err;
out_dev = act->dev;
err = mlxsw_sp_acl_rulei_act_fwd(mlxsw_sp, rulei,
out_dev, extack);
if (err)
return err;
}
break;
case FLOW_ACTION_MIRRED: {
struct net_device *out_dev = act->dev;
if (mirror_act_count++) {
NL_SET_ERR_MSG_MOD(extack, "Multiple mirror actions per rule are not supported");
return -EOPNOTSUPP;
}
err = mlxsw_sp_acl_rulei_act_mirror(mlxsw_sp, rulei,
block, out_dev,
extack);
if (err)
return err;
}
break;
case FLOW_ACTION_VLAN_MANGLE: {
u16 proto = be16_to_cpu(act->vlan.proto);
u8 prio = act->vlan.prio;
u16 vid = act->vlan.vid;
err = mlxsw_sp_acl_rulei_act_vlan(mlxsw_sp, rulei,
act->id, vid,
proto, prio, extack);
if (err)
return err;
break;
}
case FLOW_ACTION_PRIORITY:
err = mlxsw_sp_acl_rulei_act_priority(mlxsw_sp, rulei,
act->priority,
extack);
if (err)
return err;
break;
case FLOW_ACTION_MANGLE: {
enum flow_action_mangle_base htype = act->mangle.htype;
__be32 be_mask = (__force __be32) act->mangle.mask;
__be32 be_val = (__force __be32) act->mangle.val;
u32 offset = act->mangle.offset;
u32 mask = be32_to_cpu(be_mask);
u32 val = be32_to_cpu(be_val);
err = mlxsw_sp_acl_rulei_act_mangle(mlxsw_sp, rulei,
htype, offset,
mask, val, extack);
if (err)
return err;
break;
}
case FLOW_ACTION_POLICE: {
u32 burst;
if (police_act_count++) {
NL_SET_ERR_MSG_MOD(extack, "Multiple police actions per rule are not supported");
return -EOPNOTSUPP;
}
err = mlxsw_sp_policer_validate(flow_action, act, extack);
if (err)
return err;
/* The kernel might adjust the requested burst size so
* that it is not exactly a power of two. Re-adjust it
* here since the hardware only supports burst sizes
* that are a power of two.
*/
burst = roundup_pow_of_two(act->police.burst);
err = mlxsw_sp_acl_rulei_act_police(mlxsw_sp, rulei,
act->hw_index,
act->police.rate_bytes_ps,
burst, extack);
if (err)
return err;
break;
}
case FLOW_ACTION_SAMPLE: {
if (sample_act_count++) {
NL_SET_ERR_MSG_MOD(extack, "Multiple sample actions per rule are not supported");
return -EOPNOTSUPP;
}
err = mlxsw_sp_acl_rulei_act_sample(mlxsw_sp, rulei,
block,
act->sample.psample_group,
act->sample.rate,
act->sample.trunc_size,
act->sample.truncate,
extack);
if (err)
return err;
break;
}
default:
NL_SET_ERR_MSG_MOD(extack, "Unsupported action");
dev_err(mlxsw_sp->bus_info->dev, "Unsupported action\n");
return -EOPNOTSUPP;
}
}
if (rulei->ipv6_valid) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported mangle field");
return -EOPNOTSUPP;
}
return 0;
}
static int
mlxsw_sp_flower_parse_meta_iif(struct mlxsw_sp_acl_rule_info *rulei,
const struct mlxsw_sp_flow_block *block,
const struct flow_match_meta *match,
struct netlink_ext_ack *extack)
{
struct mlxsw_sp_port *mlxsw_sp_port;
struct net_device *ingress_dev;
if (!match->mask->ingress_ifindex)
return 0;
if (match->mask->ingress_ifindex != 0xFFFFFFFF) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
return -EINVAL;
}
ingress_dev = __dev_get_by_index(block->net,
match->key->ingress_ifindex);
if (!ingress_dev) {
NL_SET_ERR_MSG_MOD(extack, "Can't find specified ingress port to match on");
return -EINVAL;
}
if (!mlxsw_sp_port_dev_check(ingress_dev)) {
NL_SET_ERR_MSG_MOD(extack, "Can't match on non-mlxsw ingress port");
return -EINVAL;
}
mlxsw_sp_port = netdev_priv(ingress_dev);
if (mlxsw_sp_port->mlxsw_sp != block->mlxsw_sp) {
NL_SET_ERR_MSG_MOD(extack, "Can't match on a port from different device");
return -EINVAL;
}
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
mlxsw_sp_port->local_port,
0xFFFFFFFF);
return 0;
}
static int mlxsw_sp_flower_parse_meta(struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f,
struct mlxsw_sp_flow_block *block)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_match_meta match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META))
return 0;
flow_rule_match_meta(rule, &match);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_FDB_MISS,
match.key->l2_miss, match.mask->l2_miss);
return mlxsw_sp_flower_parse_meta_iif(rulei, block, &match,
f->common.extack);
}
static void mlxsw_sp_flower_parse_ipv4(struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f)
{
struct flow_match_ipv4_addrs match;
flow_rule_match_ipv4_addrs(f->rule, &match);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
(char *) &match.key->src,
(char *) &match.mask->src, 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
(char *) &match.key->dst,
(char *) &match.mask->dst, 4);
}
static void mlxsw_sp_flower_parse_ipv6(struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f)
{
struct flow_match_ipv6_addrs match;
flow_rule_match_ipv6_addrs(f->rule, &match);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_96_127,
&match.key->src.s6_addr[0x0],
&match.mask->src.s6_addr[0x0], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_64_95,
&match.key->src.s6_addr[0x4],
&match.mask->src.s6_addr[0x4], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_32_63,
&match.key->src.s6_addr[0x8],
&match.mask->src.s6_addr[0x8], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_SRC_IP_0_31,
&match.key->src.s6_addr[0xC],
&match.mask->src.s6_addr[0xC], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_96_127,
&match.key->dst.s6_addr[0x0],
&match.mask->dst.s6_addr[0x0], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_64_95,
&match.key->dst.s6_addr[0x4],
&match.mask->dst.s6_addr[0x4], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_32_63,
&match.key->dst.s6_addr[0x8],
&match.mask->dst.s6_addr[0x8], 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei, MLXSW_AFK_ELEMENT_DST_IP_0_31,
&match.key->dst.s6_addr[0xC],
&match.mask->dst.s6_addr[0xC], 4);
}
static int mlxsw_sp_flower_parse_ports(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f,
u8 ip_proto)
{
const struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_match_ports match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS))
return 0;
if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) {
NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported");
dev_err(mlxsw_sp->bus_info->dev, "Only UDP and TCP keys are supported\n");
return -EINVAL;
}
flow_rule_match_ports(rule, &match);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_DST_L4_PORT,
ntohs(match.key->dst),
ntohs(match.mask->dst));
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_SRC_L4_PORT,
ntohs(match.key->src),
ntohs(match.mask->src));
return 0;
}
static int
mlxsw_sp_flower_parse_ports_range(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f, u8 ip_proto)
{
const struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_match_ports_range match;
u32 key_mask_value = 0;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS_RANGE))
return 0;
if (ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) {
NL_SET_ERR_MSG_MOD(f->common.extack, "Only UDP and TCP keys are supported");
return -EINVAL;
}
flow_rule_match_ports_range(rule, &match);
if (match.mask->tp_min.src) {
struct mlxsw_sp_port_range range = {
.min = ntohs(match.key->tp_min.src),
.max = ntohs(match.key->tp_max.src),
.source = true,
};
u8 prr_index;
int err;
err = mlxsw_sp_port_range_reg_get(mlxsw_sp, &range,
f->common.extack, &prr_index);
if (err)
return err;
rulei->src_port_range_reg_index = prr_index;
rulei->src_port_range_reg_valid = true;
key_mask_value |= BIT(prr_index);
}
if (match.mask->tp_min.dst) {
struct mlxsw_sp_port_range range = {
.min = ntohs(match.key->tp_min.dst),
.max = ntohs(match.key->tp_max.dst),
};
u8 prr_index;
int err;
err = mlxsw_sp_port_range_reg_get(mlxsw_sp, &range,
f->common.extack, &prr_index);
if (err)
return err;
rulei->dst_port_range_reg_index = prr_index;
rulei->dst_port_range_reg_valid = true;
key_mask_value |= BIT(prr_index);
}
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_L4_PORT_RANGE,
key_mask_value, key_mask_value);
return 0;
}
static int mlxsw_sp_flower_parse_tcp(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f,
u8 ip_proto)
{
const struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_match_tcp match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP))
return 0;
if (ip_proto != IPPROTO_TCP) {
NL_SET_ERR_MSG_MOD(f->common.extack, "TCP keys supported only for TCP");
dev_err(mlxsw_sp->bus_info->dev, "TCP keys supported only for TCP\n");
return -EINVAL;
}
flow_rule_match_tcp(rule, &match);
if (match.mask->flags & htons(0x0E00)) {
NL_SET_ERR_MSG_MOD(f->common.extack, "TCP flags match not supported on reserved bits");
dev_err(mlxsw_sp->bus_info->dev, "TCP flags match not supported on reserved bits\n");
return -EINVAL;
}
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_TCP_FLAGS,
ntohs(match.key->flags),
ntohs(match.mask->flags));
return 0;
}
static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f,
u16 n_proto)
{
const struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_match_ip match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP))
return 0;
if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) {
NL_SET_ERR_MSG_MOD(f->common.extack, "IP keys supported only for IPv4/6");
dev_err(mlxsw_sp->bus_info->dev, "IP keys supported only for IPv4/6\n");
return -EINVAL;
}
flow_rule_match_ip(rule, &match);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_TTL_,
match.key->ttl, match.mask->ttl);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_ECN,
match.key->tos & 0x3,
match.mask->tos & 0x3);
mlxsw_sp_acl_rulei_keymask_u32(rulei, MLXSW_AFK_ELEMENT_IP_DSCP,
match.key->tos >> 2,
match.mask->tos >> 2);
return 0;
}
static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct mlxsw_sp_acl_rule_info *rulei,
struct flow_cls_offload *f)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_dissector *dissector = rule->match.dissector;
u16 n_proto_mask = 0;
u16 n_proto_key = 0;
u16 addr_type = 0;
u8 ip_proto = 0;
int err;
if (dissector->used_keys &
~(BIT_ULL(FLOW_DISSECTOR_KEY_META) |
BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) |
BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) |
BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS_RANGE) |
BIT_ULL(FLOW_DISSECTOR_KEY_TCP) |
BIT_ULL(FLOW_DISSECTOR_KEY_IP) |
BIT_ULL(FLOW_DISSECTOR_KEY_VLAN))) {
dev_err(mlxsw_sp->bus_info->dev, "Unsupported key\n");
NL_SET_ERR_MSG_MOD(f->common.extack, "Unsupported key");
return -EOPNOTSUPP;
}
mlxsw_sp_acl_rulei_priority(rulei, f->common.prio);
err = mlxsw_sp_flower_parse_meta(rulei, f, block);
if (err)
return err;
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
struct flow_match_control match;
flow_rule_match_control(rule, &match);
addr_type = match.key->addr_type;
if (flow_rule_has_control_flags(match.mask->flags,
f->common.extack))
return -EOPNOTSUPP;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
struct flow_match_basic match;
flow_rule_match_basic(rule, &match);
n_proto_key = ntohs(match.key->n_proto);
n_proto_mask = ntohs(match.mask->n_proto);
if (n_proto_key == ETH_P_ALL) {
n_proto_key = 0;
n_proto_mask = 0;
}
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_ETHERTYPE,
n_proto_key, n_proto_mask);
ip_proto = match.key->ip_proto;
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_IP_PROTO,
match.key->ip_proto,
match.mask->ip_proto);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_match_eth_addrs match;
flow_rule_match_eth_addrs(rule, &match);
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_DMAC_32_47,
match.key->dst,
match.mask->dst, 2);
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_DMAC_0_31,
match.key->dst + 2,
match.mask->dst + 2, 4);
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_SMAC_32_47,
match.key->src,
match.mask->src, 2);
mlxsw_sp_acl_rulei_keymask_buf(rulei,
MLXSW_AFK_ELEMENT_SMAC_0_31,
match.key->src + 2,
match.mask->src + 2, 4);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
struct flow_match_vlan match;
flow_rule_match_vlan(rule, &match);
if (mlxsw_sp_flow_block_is_egress_bound(block) &&
match.mask->vlan_id) {
NL_SET_ERR_MSG_MOD(f->common.extack, "vlan_id key is not supported on egress");
return -EOPNOTSUPP;
}
/* Forbid block with this rulei to be bound
* to egress in future.
*/
rulei->egress_bind_blocker = 1;
if (match.mask->vlan_id != 0)
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_VID,
match.key->vlan_id,
match.mask->vlan_id);
if (match.mask->vlan_priority != 0)
mlxsw_sp_acl_rulei_keymask_u32(rulei,
MLXSW_AFK_ELEMENT_PCP,
match.key->vlan_priority,
match.mask->vlan_priority);
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
mlxsw_sp_flower_parse_ipv4(rulei, f);
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS)
mlxsw_sp_flower_parse_ipv6(rulei, f);
err = mlxsw_sp_flower_parse_ports(mlxsw_sp, rulei, f, ip_proto);
if (err)
return err;
err = mlxsw_sp_flower_parse_ports_range(mlxsw_sp, rulei, f, ip_proto);
if (err)
return err;
err = mlxsw_sp_flower_parse_tcp(mlxsw_sp, rulei, f, ip_proto);
if (err)
return err;
err = mlxsw_sp_flower_parse_ip(mlxsw_sp, rulei, f, n_proto_key & n_proto_mask);
if (err)
return err;
return mlxsw_sp_flower_parse_actions(mlxsw_sp, block, rulei,
&f->rule->action,
f->common.extack);
}
static int mlxsw_sp_flower_mall_prio_check(struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
bool ingress = mlxsw_sp_flow_block_is_ingress_bound(block);
unsigned int mall_min_prio;
unsigned int mall_max_prio;
int err;
err = mlxsw_sp_mall_prio_get(block, f->common.chain_index,
&mall_min_prio, &mall_max_prio);
if (err) {
if (err == -ENOENT)
/* No matchall filters installed on this chain. */
return 0;
NL_SET_ERR_MSG(f->common.extack, "Failed to get matchall priorities");
return err;
}
if (ingress && f->common.prio <= mall_min_prio) {
NL_SET_ERR_MSG(f->common.extack, "Failed to add in front of existing matchall rules");
return -EOPNOTSUPP;
}
if (!ingress && f->common.prio >= mall_max_prio) {
NL_SET_ERR_MSG(f->common.extack, "Failed to add behind of existing matchall rules");
return -EOPNOTSUPP;
}
return 0;
}
int mlxsw_sp_flower_replace(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
struct mlxsw_sp_acl_rule_info *rulei;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
int err;
err = mlxsw_sp_flower_mall_prio_check(block, f);
if (err)
return err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return PTR_ERR(ruleset);
rule = mlxsw_sp_acl_rule_create(mlxsw_sp, ruleset, f->cookie, NULL,
f->common.extack);
if (IS_ERR(rule)) {
err = PTR_ERR(rule);
goto err_rule_create;
}
rulei = mlxsw_sp_acl_rule_rulei(rule);
err = mlxsw_sp_flower_parse(mlxsw_sp, block, rulei, f);
if (err)
goto err_flower_parse;
err = mlxsw_sp_acl_rulei_commit(rulei);
if (err)
goto err_rulei_commit;
err = mlxsw_sp_acl_rule_add(mlxsw_sp, rule);
if (err)
goto err_rule_add;
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return 0;
err_rule_add:
err_rulei_commit:
err_flower_parse:
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
err_rule_create:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}
void mlxsw_sp_flower_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
if (rule) {
mlxsw_sp_acl_rule_del(mlxsw_sp, rule);
mlxsw_sp_acl_rule_destroy(mlxsw_sp, rule);
}
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
}
int mlxsw_sp_flower_stats(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
enum flow_action_hw_stats used_hw_stats = FLOW_ACTION_HW_STATS_DISABLED;
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule *rule;
u64 packets;
u64 lastuse;
u64 bytes;
u64 drops;
int err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (WARN_ON(IS_ERR(ruleset)))
return -EINVAL;
rule = mlxsw_sp_acl_rule_lookup(mlxsw_sp, ruleset, f->cookie);
if (!rule)
return -EINVAL;
err = mlxsw_sp_acl_rule_get_stats(mlxsw_sp, rule, &packets, &bytes,
&drops, &lastuse, &used_hw_stats);
if (err)
goto err_rule_get_stats;
flow_stats_update(&f->stats, bytes, packets, drops, lastuse,
used_hw_stats);
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return 0;
err_rule_get_stats:
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
return err;
}
int mlxsw_sp_flower_tmplt_create(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
struct mlxsw_sp_acl_ruleset *ruleset;
struct mlxsw_sp_acl_rule_info rulei;
int err;
memset(&rulei, 0, sizeof(rulei));
err = mlxsw_sp_flower_parse(mlxsw_sp, block, &rulei, f);
if (err)
return err;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER,
&rulei.values.elusage);
/* keep the reference to the ruleset */
return PTR_ERR_OR_ZERO(ruleset);
}
void mlxsw_sp_flower_tmplt_destroy(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
struct flow_cls_offload *f)
{
struct mlxsw_sp_acl_ruleset *ruleset;
ruleset = mlxsw_sp_acl_ruleset_get(mlxsw_sp, block,
f->common.chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER, NULL);
if (IS_ERR(ruleset))
return;
/* put the reference to the ruleset kept in create */
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
mlxsw_sp_acl_ruleset_put(mlxsw_sp, ruleset);
}
int mlxsw_sp_flower_prio_get(struct mlxsw_sp *mlxsw_sp,
struct mlxsw_sp_flow_block *block,
u32 chain_index, unsigned int *p_min_prio,
unsigned int *p_max_prio)
{
struct mlxsw_sp_acl_ruleset *ruleset;
ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, block,
chain_index,
MLXSW_SP_ACL_PROFILE_FLOWER);
if (IS_ERR(ruleset))
/* In case there are no flower rules, the caller
* receives -ENOENT to indicate there is no need
* to check the priorities.
*/
return PTR_ERR(ruleset);
mlxsw_sp_acl_ruleset_prio_get(ruleset, p_min_prio, p_max_prio);
return 0;
}
Reference in New Issue View Git Blame Copy Permalink