1292 lines
35 KiB
C
1292 lines
35 KiB
C
/*
|
|
* Copyright (c) 2016, Mellanox Technologies. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - 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.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include <net/flow_dissector.h>
|
|
#include <net/sch_generic.h>
|
|
#include <net/pkt_cls.h>
|
|
#include <net/tc_act/tc_gact.h>
|
|
#include <net/tc_act/tc_skbedit.h>
|
|
#include <linux/mlx5/fs.h>
|
|
#include <linux/mlx5/device.h>
|
|
#include <linux/rhashtable.h>
|
|
#include <net/switchdev.h>
|
|
#include <net/tc_act/tc_mirred.h>
|
|
#include <net/tc_act/tc_vlan.h>
|
|
#include <net/tc_act/tc_tunnel_key.h>
|
|
#include <net/vxlan.h>
|
|
#include "en.h"
|
|
#include "en_tc.h"
|
|
#include "eswitch.h"
|
|
#include "vxlan.h"
|
|
|
|
enum {
|
|
MLX5E_TC_FLOW_ESWITCH = BIT(0),
|
|
};
|
|
|
|
struct mlx5e_tc_flow {
|
|
struct rhash_head node;
|
|
u64 cookie;
|
|
u8 flags;
|
|
struct mlx5_flow_handle *rule;
|
|
struct list_head encap; /* flows sharing the same encap */
|
|
struct mlx5_esw_flow_attr *attr;
|
|
};
|
|
|
|
enum {
|
|
MLX5_HEADER_TYPE_VXLAN = 0x0,
|
|
MLX5_HEADER_TYPE_NVGRE = 0x1,
|
|
};
|
|
|
|
#define MLX5E_TC_TABLE_NUM_ENTRIES 1024
|
|
#define MLX5E_TC_TABLE_NUM_GROUPS 4
|
|
|
|
static struct mlx5_flow_handle *
|
|
mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
|
|
struct mlx5_flow_spec *spec,
|
|
u32 action, u32 flow_tag)
|
|
{
|
|
struct mlx5_core_dev *dev = priv->mdev;
|
|
struct mlx5_flow_destination dest = { 0 };
|
|
struct mlx5_flow_act flow_act = {
|
|
.action = action,
|
|
.flow_tag = flow_tag,
|
|
.encap_id = 0,
|
|
};
|
|
struct mlx5_fc *counter = NULL;
|
|
struct mlx5_flow_handle *rule;
|
|
bool table_created = false;
|
|
|
|
if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
|
|
dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
|
|
dest.ft = priv->fs.vlan.ft.t;
|
|
} else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
|
|
counter = mlx5_fc_create(dev, true);
|
|
if (IS_ERR(counter))
|
|
return ERR_CAST(counter);
|
|
|
|
dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
|
|
dest.counter = counter;
|
|
}
|
|
|
|
if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
|
|
priv->fs.tc.t =
|
|
mlx5_create_auto_grouped_flow_table(priv->fs.ns,
|
|
MLX5E_TC_PRIO,
|
|
MLX5E_TC_TABLE_NUM_ENTRIES,
|
|
MLX5E_TC_TABLE_NUM_GROUPS,
|
|
0, 0);
|
|
if (IS_ERR(priv->fs.tc.t)) {
|
|
netdev_err(priv->netdev,
|
|
"Failed to create tc offload table\n");
|
|
rule = ERR_CAST(priv->fs.tc.t);
|
|
goto err_create_ft;
|
|
}
|
|
|
|
table_created = true;
|
|
}
|
|
|
|
spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
|
|
rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
|
|
|
|
if (IS_ERR(rule))
|
|
goto err_add_rule;
|
|
|
|
return rule;
|
|
|
|
err_add_rule:
|
|
if (table_created) {
|
|
mlx5_destroy_flow_table(priv->fs.tc.t);
|
|
priv->fs.tc.t = NULL;
|
|
}
|
|
err_create_ft:
|
|
mlx5_fc_destroy(dev, counter);
|
|
|
|
return rule;
|
|
}
|
|
|
|
static struct mlx5_flow_handle *
|
|
mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
|
|
struct mlx5_flow_spec *spec,
|
|
struct mlx5_esw_flow_attr *attr)
|
|
{
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
int err;
|
|
|
|
err = mlx5_eswitch_add_vlan_action(esw, attr);
|
|
if (err)
|
|
return ERR_PTR(err);
|
|
|
|
return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
|
|
}
|
|
|
|
static void mlx5e_detach_encap(struct mlx5e_priv *priv,
|
|
struct mlx5e_tc_flow *flow) {
|
|
struct list_head *next = flow->encap.next;
|
|
|
|
list_del(&flow->encap);
|
|
if (list_empty(next)) {
|
|
struct mlx5_encap_entry *e;
|
|
|
|
e = list_entry(next, struct mlx5_encap_entry, flows);
|
|
if (e->n) {
|
|
mlx5_encap_dealloc(priv->mdev, e->encap_id);
|
|
neigh_release(e->n);
|
|
}
|
|
hlist_del_rcu(&e->encap_hlist);
|
|
kfree(e);
|
|
}
|
|
}
|
|
|
|
/* we get here also when setting rule to the FW failed, etc. It means that the
|
|
* flow rule itself might not exist, but some offloading related to the actions
|
|
* should be cleaned.
|
|
*/
|
|
static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
|
|
struct mlx5e_tc_flow *flow)
|
|
{
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
struct mlx5_fc *counter = NULL;
|
|
|
|
if (!IS_ERR(flow->rule)) {
|
|
counter = mlx5_flow_rule_counter(flow->rule);
|
|
mlx5_del_flow_rules(flow->rule);
|
|
mlx5_fc_destroy(priv->mdev, counter);
|
|
}
|
|
|
|
if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
|
|
mlx5_eswitch_del_vlan_action(esw, flow->attr);
|
|
if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
|
|
mlx5e_detach_encap(priv, flow);
|
|
}
|
|
|
|
if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
|
|
mlx5_destroy_flow_table(priv->fs.tc.t);
|
|
priv->fs.tc.t = NULL;
|
|
}
|
|
}
|
|
|
|
static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
|
outer_headers);
|
|
void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
|
outer_headers);
|
|
void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
|
misc_parameters);
|
|
void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
|
misc_parameters);
|
|
|
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
|
|
struct flow_dissector_key_keyid *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_KEYID,
|
|
f->key);
|
|
struct flow_dissector_key_keyid *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_KEYID,
|
|
f->mask);
|
|
MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
|
|
be32_to_cpu(mask->keyid));
|
|
MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
|
|
be32_to_cpu(key->keyid));
|
|
}
|
|
}
|
|
|
|
static int parse_tunnel_attr(struct mlx5e_priv *priv,
|
|
struct mlx5_flow_spec *spec,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
|
outer_headers);
|
|
void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
|
outer_headers);
|
|
|
|
struct flow_dissector_key_control *enc_control =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_CONTROL,
|
|
f->key);
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
|
|
struct flow_dissector_key_ports *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_PORTS,
|
|
f->key);
|
|
struct flow_dissector_key_ports *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_PORTS,
|
|
f->mask);
|
|
|
|
/* Full udp dst port must be given */
|
|
if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
|
|
goto vxlan_match_offload_err;
|
|
|
|
if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
|
|
MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
|
|
parse_vxlan_attr(spec, f);
|
|
else {
|
|
netdev_warn(priv->netdev,
|
|
"%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
udp_dport, ntohs(mask->dst));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
udp_dport, ntohs(key->dst));
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
udp_sport, ntohs(mask->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
udp_sport, ntohs(key->src));
|
|
} else { /* udp dst port must be given */
|
|
vxlan_match_offload_err:
|
|
netdev_warn(priv->netdev,
|
|
"IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
|
|
struct flow_dissector_key_ipv4_addrs *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
|
|
f->key);
|
|
struct flow_dissector_key_ipv4_addrs *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
|
|
f->mask);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
src_ipv4_src_ipv6.ipv4_layout.ipv4,
|
|
ntohl(mask->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
src_ipv4_src_ipv6.ipv4_layout.ipv4,
|
|
ntohl(key->src));
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
|
|
ntohl(mask->dst));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
|
|
ntohl(key->dst));
|
|
|
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
|
|
} else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
|
|
struct flow_dissector_key_ipv6_addrs *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
|
|
f->key);
|
|
struct flow_dissector_key_ipv6_addrs *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
|
|
f->mask);
|
|
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
|
&mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
|
&key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
|
|
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
|
&mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
|
&key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
|
|
|
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
|
|
}
|
|
|
|
/* Enforce DMAC when offloading incoming tunneled flows.
|
|
* Flow counters require a match on the DMAC.
|
|
*/
|
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
|
|
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
dmac_47_16), priv->netdev->dev_addr);
|
|
|
|
/* let software handle IP fragments */
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __parse_cls_flower(struct mlx5e_priv *priv,
|
|
struct mlx5_flow_spec *spec,
|
|
struct tc_cls_flower_offload *f,
|
|
u8 *min_inline)
|
|
{
|
|
void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
|
outer_headers);
|
|
void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
|
outer_headers);
|
|
u16 addr_type = 0;
|
|
u8 ip_proto = 0;
|
|
|
|
*min_inline = MLX5_INLINE_MODE_L2;
|
|
|
|
if (f->dissector->used_keys &
|
|
~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
|
|
BIT(FLOW_DISSECTOR_KEY_BASIC) |
|
|
BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
|
|
BIT(FLOW_DISSECTOR_KEY_VLAN) |
|
|
BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
|
|
BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
|
|
BIT(FLOW_DISSECTOR_KEY_PORTS) |
|
|
BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
|
|
BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
|
|
BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
|
|
BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
|
|
BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
|
|
netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
|
|
f->dissector->used_keys);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if ((dissector_uses_key(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
|
|
dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
|
|
dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
|
|
dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
|
|
struct flow_dissector_key_control *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ENC_CONTROL,
|
|
f->key);
|
|
switch (key->addr_type) {
|
|
case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
|
|
case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
|
|
if (parse_tunnel_attr(priv, spec, f))
|
|
return -EOPNOTSUPP;
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* In decap flow, header pointers should point to the inner
|
|
* headers, outer header were already set by parse_tunnel_attr
|
|
*/
|
|
headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
|
|
inner_headers);
|
|
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
|
|
inner_headers);
|
|
}
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
|
|
struct flow_dissector_key_control *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_CONTROL,
|
|
f->key);
|
|
|
|
struct flow_dissector_key_control *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_CONTROL,
|
|
f->mask);
|
|
addr_type = key->addr_type;
|
|
|
|
if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
|
|
key->flags & FLOW_DIS_IS_FRAGMENT);
|
|
|
|
/* the HW doesn't need L3 inline to match on frag=no */
|
|
if (key->flags & FLOW_DIS_IS_FRAGMENT)
|
|
*min_inline = MLX5_INLINE_MODE_IP;
|
|
}
|
|
}
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
|
|
struct flow_dissector_key_basic *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_BASIC,
|
|
f->key);
|
|
struct flow_dissector_key_basic *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_BASIC,
|
|
f->mask);
|
|
ip_proto = key->ip_proto;
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
|
|
ntohs(mask->n_proto));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
|
|
ntohs(key->n_proto));
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
|
|
mask->ip_proto);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
|
|
key->ip_proto);
|
|
|
|
if (mask->ip_proto)
|
|
*min_inline = MLX5_INLINE_MODE_IP;
|
|
}
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
|
|
struct flow_dissector_key_eth_addrs *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ETH_ADDRS,
|
|
f->key);
|
|
struct flow_dissector_key_eth_addrs *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_ETH_ADDRS,
|
|
f->mask);
|
|
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
dmac_47_16),
|
|
mask->dst);
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
dmac_47_16),
|
|
key->dst);
|
|
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
smac_47_16),
|
|
mask->src);
|
|
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
smac_47_16),
|
|
key->src);
|
|
}
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
|
|
struct flow_dissector_key_vlan *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_VLAN,
|
|
f->key);
|
|
struct flow_dissector_key_vlan *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_VLAN,
|
|
f->mask);
|
|
if (mask->vlan_id || mask->vlan_priority) {
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
|
|
}
|
|
}
|
|
|
|
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
|
|
struct flow_dissector_key_ipv4_addrs *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_IPV4_ADDRS,
|
|
f->key);
|
|
struct flow_dissector_key_ipv4_addrs *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_IPV4_ADDRS,
|
|
f->mask);
|
|
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
|
&mask->src, sizeof(mask->src));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
src_ipv4_src_ipv6.ipv4_layout.ipv4),
|
|
&key->src, sizeof(key->src));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
|
&mask->dst, sizeof(mask->dst));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
|
|
&key->dst, sizeof(key->dst));
|
|
|
|
if (mask->src || mask->dst)
|
|
*min_inline = MLX5_INLINE_MODE_IP;
|
|
}
|
|
|
|
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
|
|
struct flow_dissector_key_ipv6_addrs *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_IPV6_ADDRS,
|
|
f->key);
|
|
struct flow_dissector_key_ipv6_addrs *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_IPV6_ADDRS,
|
|
f->mask);
|
|
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
|
&mask->src, sizeof(mask->src));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
src_ipv4_src_ipv6.ipv6_layout.ipv6),
|
|
&key->src, sizeof(key->src));
|
|
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
|
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
|
&mask->dst, sizeof(mask->dst));
|
|
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
|
|
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
|
|
&key->dst, sizeof(key->dst));
|
|
|
|
if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
|
|
ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
|
|
*min_inline = MLX5_INLINE_MODE_IP;
|
|
}
|
|
|
|
if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
|
|
struct flow_dissector_key_ports *key =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_PORTS,
|
|
f->key);
|
|
struct flow_dissector_key_ports *mask =
|
|
skb_flow_dissector_target(f->dissector,
|
|
FLOW_DISSECTOR_KEY_PORTS,
|
|
f->mask);
|
|
switch (ip_proto) {
|
|
case IPPROTO_TCP:
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
tcp_sport, ntohs(mask->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
tcp_sport, ntohs(key->src));
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
tcp_dport, ntohs(mask->dst));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
tcp_dport, ntohs(key->dst));
|
|
break;
|
|
|
|
case IPPROTO_UDP:
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
udp_sport, ntohs(mask->src));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
udp_sport, ntohs(key->src));
|
|
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
|
|
udp_dport, ntohs(mask->dst));
|
|
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
|
|
udp_dport, ntohs(key->dst));
|
|
break;
|
|
default:
|
|
netdev_err(priv->netdev,
|
|
"Only UDP and TCP transport are supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mask->src || mask->dst)
|
|
*min_inline = MLX5_INLINE_MODE_TCP_UDP;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_cls_flower(struct mlx5e_priv *priv,
|
|
struct mlx5e_tc_flow *flow,
|
|
struct mlx5_flow_spec *spec,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
struct mlx5_core_dev *dev = priv->mdev;
|
|
struct mlx5_eswitch *esw = dev->priv.eswitch;
|
|
struct mlx5_eswitch_rep *rep = priv->ppriv;
|
|
u8 min_inline;
|
|
int err;
|
|
|
|
err = __parse_cls_flower(priv, spec, f, &min_inline);
|
|
|
|
if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH) &&
|
|
rep->vport != FDB_UPLINK_VPORT) {
|
|
if (min_inline > esw->offloads.inline_mode) {
|
|
netdev_warn(priv->netdev,
|
|
"Flow is not offloaded due to min inline setting, required %d actual %d\n",
|
|
min_inline, esw->offloads.inline_mode);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
|
|
u32 *action, u32 *flow_tag)
|
|
{
|
|
const struct tc_action *a;
|
|
LIST_HEAD(actions);
|
|
|
|
if (tc_no_actions(exts))
|
|
return -EINVAL;
|
|
|
|
*flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
|
|
*action = 0;
|
|
|
|
tcf_exts_to_list(exts, &actions);
|
|
list_for_each_entry(a, &actions, list) {
|
|
/* Only support a single action per rule */
|
|
if (*action)
|
|
return -EINVAL;
|
|
|
|
if (is_tcf_gact_shot(a)) {
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
|
|
if (MLX5_CAP_FLOWTABLE(priv->mdev,
|
|
flow_table_properties_nic_receive.flow_counter))
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
|
continue;
|
|
}
|
|
|
|
if (is_tcf_skbedit_mark(a)) {
|
|
u32 mark = tcf_skbedit_mark(a);
|
|
|
|
if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
|
|
netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
|
|
mark);
|
|
return -EINVAL;
|
|
}
|
|
|
|
*flow_tag = mark;
|
|
*action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
|
|
continue;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int cmp_encap_info(struct ip_tunnel_key *a,
|
|
struct ip_tunnel_key *b)
|
|
{
|
|
return memcmp(a, b, sizeof(*a));
|
|
}
|
|
|
|
static inline int hash_encap_info(struct ip_tunnel_key *key)
|
|
{
|
|
return jhash(key, sizeof(*key), 0);
|
|
}
|
|
|
|
static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
|
|
struct net_device *mirred_dev,
|
|
struct net_device **out_dev,
|
|
struct flowi4 *fl4,
|
|
struct neighbour **out_n,
|
|
int *out_ttl)
|
|
{
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
struct rtable *rt;
|
|
struct neighbour *n = NULL;
|
|
|
|
#if IS_ENABLED(CONFIG_INET)
|
|
int ret;
|
|
|
|
rt = ip_route_output_key(dev_net(mirred_dev), fl4);
|
|
ret = PTR_ERR_OR_ZERO(rt);
|
|
if (ret)
|
|
return ret;
|
|
#else
|
|
return -EOPNOTSUPP;
|
|
#endif
|
|
/* if the egress device isn't on the same HW e-switch, we use the uplink */
|
|
if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
|
|
*out_dev = mlx5_eswitch_get_uplink_netdev(esw);
|
|
else
|
|
*out_dev = rt->dst.dev;
|
|
|
|
*out_ttl = ip4_dst_hoplimit(&rt->dst);
|
|
n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
|
|
ip_rt_put(rt);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
*out_n = n;
|
|
return 0;
|
|
}
|
|
|
|
static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
|
|
struct net_device *mirred_dev,
|
|
struct net_device **out_dev,
|
|
struct flowi6 *fl6,
|
|
struct neighbour **out_n,
|
|
int *out_ttl)
|
|
{
|
|
struct neighbour *n = NULL;
|
|
struct dst_entry *dst;
|
|
|
|
#if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
int ret;
|
|
|
|
dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
|
|
ret = dst->error;
|
|
if (ret) {
|
|
dst_release(dst);
|
|
return ret;
|
|
}
|
|
|
|
*out_ttl = ip6_dst_hoplimit(dst);
|
|
|
|
/* if the egress device isn't on the same HW e-switch, we use the uplink */
|
|
if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
|
|
*out_dev = mlx5_eswitch_get_uplink_netdev(esw);
|
|
else
|
|
*out_dev = dst->dev;
|
|
#else
|
|
return -EOPNOTSUPP;
|
|
#endif
|
|
|
|
n = dst_neigh_lookup(dst, &fl6->daddr);
|
|
dst_release(dst);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
*out_n = n;
|
|
return 0;
|
|
}
|
|
|
|
static int gen_vxlan_header_ipv4(struct net_device *out_dev,
|
|
char buf[],
|
|
unsigned char h_dest[ETH_ALEN],
|
|
int ttl,
|
|
__be32 daddr,
|
|
__be32 saddr,
|
|
__be16 udp_dst_port,
|
|
__be32 vx_vni)
|
|
{
|
|
int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
|
|
struct ethhdr *eth = (struct ethhdr *)buf;
|
|
struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
|
|
struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
|
|
struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
|
|
|
|
memset(buf, 0, encap_size);
|
|
|
|
ether_addr_copy(eth->h_dest, h_dest);
|
|
ether_addr_copy(eth->h_source, out_dev->dev_addr);
|
|
eth->h_proto = htons(ETH_P_IP);
|
|
|
|
ip->daddr = daddr;
|
|
ip->saddr = saddr;
|
|
|
|
ip->ttl = ttl;
|
|
ip->protocol = IPPROTO_UDP;
|
|
ip->version = 0x4;
|
|
ip->ihl = 0x5;
|
|
|
|
udp->dest = udp_dst_port;
|
|
vxh->vx_flags = VXLAN_HF_VNI;
|
|
vxh->vx_vni = vxlan_vni_field(vx_vni);
|
|
|
|
return encap_size;
|
|
}
|
|
|
|
static int gen_vxlan_header_ipv6(struct net_device *out_dev,
|
|
char buf[],
|
|
unsigned char h_dest[ETH_ALEN],
|
|
int ttl,
|
|
struct in6_addr *daddr,
|
|
struct in6_addr *saddr,
|
|
__be16 udp_dst_port,
|
|
__be32 vx_vni)
|
|
{
|
|
int encap_size = VXLAN_HLEN + sizeof(struct ipv6hdr) + ETH_HLEN;
|
|
struct ethhdr *eth = (struct ethhdr *)buf;
|
|
struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
|
|
struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
|
|
struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
|
|
|
|
memset(buf, 0, encap_size);
|
|
|
|
ether_addr_copy(eth->h_dest, h_dest);
|
|
ether_addr_copy(eth->h_source, out_dev->dev_addr);
|
|
eth->h_proto = htons(ETH_P_IPV6);
|
|
|
|
ip6_flow_hdr(ip6h, 0, 0);
|
|
/* the HW fills up ipv6 payload len */
|
|
ip6h->nexthdr = IPPROTO_UDP;
|
|
ip6h->hop_limit = ttl;
|
|
ip6h->daddr = *daddr;
|
|
ip6h->saddr = *saddr;
|
|
|
|
udp->dest = udp_dst_port;
|
|
vxh->vx_flags = VXLAN_HF_VNI;
|
|
vxh->vx_vni = vxlan_vni_field(vx_vni);
|
|
|
|
return encap_size;
|
|
}
|
|
|
|
static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
|
|
struct net_device *mirred_dev,
|
|
struct mlx5_encap_entry *e,
|
|
struct net_device **out_dev)
|
|
{
|
|
int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
|
|
struct ip_tunnel_key *tun_key = &e->tun_info.key;
|
|
int encap_size, ttl, err;
|
|
struct neighbour *n = NULL;
|
|
struct flowi4 fl4 = {};
|
|
char *encap_header;
|
|
|
|
encap_header = kzalloc(max_encap_size, GFP_KERNEL);
|
|
if (!encap_header)
|
|
return -ENOMEM;
|
|
|
|
switch (e->tunnel_type) {
|
|
case MLX5_HEADER_TYPE_VXLAN:
|
|
fl4.flowi4_proto = IPPROTO_UDP;
|
|
fl4.fl4_dport = tun_key->tp_dst;
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
fl4.flowi4_tos = tun_key->tos;
|
|
fl4.daddr = tun_key->u.ipv4.dst;
|
|
fl4.saddr = tun_key->u.ipv4.src;
|
|
|
|
err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
|
|
&fl4, &n, &ttl);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!(n->nud_state & NUD_VALID)) {
|
|
pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
e->n = n;
|
|
e->out_dev = *out_dev;
|
|
|
|
neigh_ha_snapshot(e->h_dest, n, *out_dev);
|
|
|
|
switch (e->tunnel_type) {
|
|
case MLX5_HEADER_TYPE_VXLAN:
|
|
encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
|
|
e->h_dest, ttl,
|
|
fl4.daddr,
|
|
fl4.saddr, tun_key->tp_dst,
|
|
tunnel_id_to_key32(tun_key->tun_id));
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
|
|
encap_size, encap_header, &e->encap_id);
|
|
out:
|
|
if (err && n)
|
|
neigh_release(n);
|
|
kfree(encap_header);
|
|
return err;
|
|
}
|
|
|
|
static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
|
|
struct net_device *mirred_dev,
|
|
struct mlx5_encap_entry *e,
|
|
struct net_device **out_dev)
|
|
|
|
{
|
|
int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
|
|
struct ip_tunnel_key *tun_key = &e->tun_info.key;
|
|
int encap_size, err, ttl = 0;
|
|
struct neighbour *n = NULL;
|
|
struct flowi6 fl6 = {};
|
|
char *encap_header;
|
|
|
|
encap_header = kzalloc(max_encap_size, GFP_KERNEL);
|
|
if (!encap_header)
|
|
return -ENOMEM;
|
|
|
|
switch (e->tunnel_type) {
|
|
case MLX5_HEADER_TYPE_VXLAN:
|
|
fl6.flowi6_proto = IPPROTO_UDP;
|
|
fl6.fl6_dport = tun_key->tp_dst;
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
|
|
fl6.daddr = tun_key->u.ipv6.dst;
|
|
fl6.saddr = tun_key->u.ipv6.src;
|
|
|
|
err = mlx5e_route_lookup_ipv6(priv, mirred_dev, out_dev,
|
|
&fl6, &n, &ttl);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (!(n->nud_state & NUD_VALID)) {
|
|
pr_warn("%s: can't offload, neighbour to %pI6 invalid\n", __func__, &fl6.daddr);
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
e->n = n;
|
|
e->out_dev = *out_dev;
|
|
|
|
neigh_ha_snapshot(e->h_dest, n, *out_dev);
|
|
|
|
switch (e->tunnel_type) {
|
|
case MLX5_HEADER_TYPE_VXLAN:
|
|
encap_size = gen_vxlan_header_ipv6(*out_dev, encap_header,
|
|
e->h_dest, ttl,
|
|
&fl6.daddr,
|
|
&fl6.saddr, tun_key->tp_dst,
|
|
tunnel_id_to_key32(tun_key->tun_id));
|
|
break;
|
|
default:
|
|
err = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
|
|
err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
|
|
encap_size, encap_header, &e->encap_id);
|
|
out:
|
|
if (err && n)
|
|
neigh_release(n);
|
|
kfree(encap_header);
|
|
return err;
|
|
}
|
|
|
|
static int mlx5e_attach_encap(struct mlx5e_priv *priv,
|
|
struct ip_tunnel_info *tun_info,
|
|
struct net_device *mirred_dev,
|
|
struct mlx5_esw_flow_attr *attr)
|
|
{
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
unsigned short family = ip_tunnel_info_af(tun_info);
|
|
struct ip_tunnel_key *key = &tun_info->key;
|
|
struct mlx5_encap_entry *e;
|
|
struct net_device *out_dev;
|
|
int tunnel_type, err = -EOPNOTSUPP;
|
|
uintptr_t hash_key;
|
|
bool found = false;
|
|
|
|
/* udp dst port must be set */
|
|
if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
|
|
goto vxlan_encap_offload_err;
|
|
|
|
/* setting udp src port isn't supported */
|
|
if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
|
|
vxlan_encap_offload_err:
|
|
netdev_warn(priv->netdev,
|
|
"must set udp dst port and not set udp src port\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
|
|
MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
|
|
tunnel_type = MLX5_HEADER_TYPE_VXLAN;
|
|
} else {
|
|
netdev_warn(priv->netdev,
|
|
"%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
hash_key = hash_encap_info(key);
|
|
|
|
hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
|
|
encap_hlist, hash_key) {
|
|
if (!cmp_encap_info(&e->tun_info.key, key)) {
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found) {
|
|
attr->encap = e;
|
|
return 0;
|
|
}
|
|
|
|
e = kzalloc(sizeof(*e), GFP_KERNEL);
|
|
if (!e)
|
|
return -ENOMEM;
|
|
|
|
e->tun_info = *tun_info;
|
|
e->tunnel_type = tunnel_type;
|
|
INIT_LIST_HEAD(&e->flows);
|
|
|
|
if (family == AF_INET)
|
|
err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
|
|
else if (family == AF_INET6)
|
|
err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e, &out_dev);
|
|
|
|
if (err)
|
|
goto out_err;
|
|
|
|
attr->encap = e;
|
|
hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
|
|
|
|
return err;
|
|
|
|
out_err:
|
|
kfree(e);
|
|
return err;
|
|
}
|
|
|
|
static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
|
|
struct mlx5e_tc_flow *flow)
|
|
{
|
|
struct mlx5_esw_flow_attr *attr = flow->attr;
|
|
struct ip_tunnel_info *info = NULL;
|
|
const struct tc_action *a;
|
|
LIST_HEAD(actions);
|
|
bool encap = false;
|
|
int err;
|
|
|
|
if (tc_no_actions(exts))
|
|
return -EINVAL;
|
|
|
|
memset(attr, 0, sizeof(*attr));
|
|
attr->in_rep = priv->ppriv;
|
|
|
|
tcf_exts_to_list(exts, &actions);
|
|
list_for_each_entry(a, &actions, list) {
|
|
if (is_tcf_gact_shot(a)) {
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
|
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
|
continue;
|
|
}
|
|
|
|
if (is_tcf_mirred_egress_redirect(a)) {
|
|
int ifindex = tcf_mirred_ifindex(a);
|
|
struct net_device *out_dev;
|
|
struct mlx5e_priv *out_priv;
|
|
|
|
out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
|
|
|
|
if (switchdev_port_same_parent_id(priv->netdev,
|
|
out_dev)) {
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
|
out_priv = netdev_priv(out_dev);
|
|
attr->out_rep = out_priv->ppriv;
|
|
} else if (encap) {
|
|
err = mlx5e_attach_encap(priv, info,
|
|
out_dev, attr);
|
|
if (err)
|
|
return err;
|
|
list_add(&flow->encap, &attr->encap->flows);
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
|
|
MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
|
|
MLX5_FLOW_CONTEXT_ACTION_COUNT;
|
|
out_priv = netdev_priv(attr->encap->out_dev);
|
|
attr->out_rep = out_priv->ppriv;
|
|
} else {
|
|
pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
|
|
priv->netdev->name, out_dev->name);
|
|
return -EINVAL;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (is_tcf_tunnel_set(a)) {
|
|
info = tcf_tunnel_info(a);
|
|
if (info)
|
|
encap = true;
|
|
else
|
|
return -EOPNOTSUPP;
|
|
continue;
|
|
}
|
|
|
|
if (is_tcf_vlan(a)) {
|
|
if (tcf_vlan_action(a) == VLAN_F_POP) {
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
|
|
} else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
|
|
if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
|
|
return -EOPNOTSUPP;
|
|
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
|
|
attr->vlan = tcf_vlan_push_vid(a);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (is_tcf_tunnel_release(a)) {
|
|
attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
|
|
continue;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
int err, attr_size = 0;
|
|
u32 flow_tag, action;
|
|
struct mlx5e_tc_flow *flow;
|
|
struct mlx5_flow_spec *spec;
|
|
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
|
|
u8 flow_flags = 0;
|
|
|
|
if (esw && esw->mode == SRIOV_OFFLOADS) {
|
|
flow_flags = MLX5E_TC_FLOW_ESWITCH;
|
|
attr_size = sizeof(struct mlx5_esw_flow_attr);
|
|
}
|
|
|
|
flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
|
|
spec = mlx5_vzalloc(sizeof(*spec));
|
|
if (!spec || !flow) {
|
|
err = -ENOMEM;
|
|
goto err_free;
|
|
}
|
|
|
|
flow->cookie = f->cookie;
|
|
flow->flags = flow_flags;
|
|
|
|
err = parse_cls_flower(priv, flow, spec, f);
|
|
if (err < 0)
|
|
goto err_free;
|
|
|
|
if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
|
|
flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1);
|
|
err = parse_tc_fdb_actions(priv, f->exts, flow);
|
|
if (err < 0)
|
|
goto err_free;
|
|
flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
|
|
} else {
|
|
err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
|
|
if (err < 0)
|
|
goto err_free;
|
|
flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
|
|
}
|
|
|
|
if (IS_ERR(flow->rule)) {
|
|
err = PTR_ERR(flow->rule);
|
|
goto err_del_rule;
|
|
}
|
|
|
|
err = rhashtable_insert_fast(&tc->ht, &flow->node,
|
|
tc->ht_params);
|
|
if (err)
|
|
goto err_del_rule;
|
|
|
|
goto out;
|
|
|
|
err_del_rule:
|
|
mlx5e_tc_del_flow(priv, flow);
|
|
|
|
err_free:
|
|
kfree(flow);
|
|
out:
|
|
kvfree(spec);
|
|
return err;
|
|
}
|
|
|
|
int mlx5e_delete_flower(struct mlx5e_priv *priv,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
struct mlx5e_tc_flow *flow;
|
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
|
|
flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
|
|
tc->ht_params);
|
|
if (!flow)
|
|
return -EINVAL;
|
|
|
|
rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
|
|
|
|
mlx5e_tc_del_flow(priv, flow);
|
|
|
|
|
|
kfree(flow);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mlx5e_stats_flower(struct mlx5e_priv *priv,
|
|
struct tc_cls_flower_offload *f)
|
|
{
|
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
struct mlx5e_tc_flow *flow;
|
|
struct tc_action *a;
|
|
struct mlx5_fc *counter;
|
|
LIST_HEAD(actions);
|
|
u64 bytes;
|
|
u64 packets;
|
|
u64 lastuse;
|
|
|
|
flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
|
|
tc->ht_params);
|
|
if (!flow)
|
|
return -EINVAL;
|
|
|
|
counter = mlx5_flow_rule_counter(flow->rule);
|
|
if (!counter)
|
|
return 0;
|
|
|
|
mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
|
|
|
|
preempt_disable();
|
|
|
|
tcf_exts_to_list(f->exts, &actions);
|
|
list_for_each_entry(a, &actions, list)
|
|
tcf_action_stats_update(a, bytes, packets, lastuse);
|
|
|
|
preempt_enable();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
|
|
.head_offset = offsetof(struct mlx5e_tc_flow, node),
|
|
.key_offset = offsetof(struct mlx5e_tc_flow, cookie),
|
|
.key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
|
|
.automatic_shrinking = true,
|
|
};
|
|
|
|
int mlx5e_tc_init(struct mlx5e_priv *priv)
|
|
{
|
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
|
|
tc->ht_params = mlx5e_tc_flow_ht_params;
|
|
return rhashtable_init(&tc->ht, &tc->ht_params);
|
|
}
|
|
|
|
static void _mlx5e_tc_del_flow(void *ptr, void *arg)
|
|
{
|
|
struct mlx5e_tc_flow *flow = ptr;
|
|
struct mlx5e_priv *priv = arg;
|
|
|
|
mlx5e_tc_del_flow(priv, flow);
|
|
kfree(flow);
|
|
}
|
|
|
|
void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
|
|
{
|
|
struct mlx5e_tc_table *tc = &priv->fs.tc;
|
|
|
|
rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
|
|
|
|
if (!IS_ERR_OR_NULL(tc->t)) {
|
|
mlx5_destroy_flow_table(tc->t);
|
|
tc->t = NULL;
|
|
}
|
|
}
|