/*
* 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/flow_offload.h>
#include <net/sch_generic.h>
#include <net/pkt_cls.h>
#include <linux/mlx5/fs.h>
#include <linux/mlx5/device.h>
#include <linux/rhashtable.h>
#include <linux/refcount.h>
#include <linux/completion.h>
#include <net/arp.h>
#include <net/ipv6_stubs.h>
#include <net/bareudp.h>
#include <net/bonding.h>
#include <net/dst_metadata.h>
#include "devlink.h"
#include "en.h"
#include "en/tc/post_act.h"
#include "en/tc/act_stats.h"
#include "en_rep.h"
#include "en/rep/tc.h"
#include "en/rep/neigh.h"
#include "en_tc.h"
#include "eswitch.h"
#include "fs_core.h"
#include "en/port.h"
#include "en/tc_tun.h"
#include "en/mapping.h"
#include "en/tc_ct.h"
#include "en/mod_hdr.h"
#include "en/tc_tun_encap.h"
#include "en/tc/sample.h"
#include "en/tc/act/act.h"
#include "en/tc/post_meter.h"
#include "lib/devcom.h"
#include "lib/geneve.h"
#include "lib/fs_chains.h"
#include "diag/en_tc_tracepoint.h"
#include <asm/div64.h>
#include "lag/lag.h"
#include "lag/mp.h"
#define MLX5E_TC_TABLE_NUM_GROUPS 4
#define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(18)
struct mlx5e_tc_table {
/* Protects the dynamic assignment of the t parameter
* which is the nic tc root table.
*/
struct mutex t_lock;
struct mlx5e_priv *priv;
struct mlx5_flow_table *t;
struct mlx5_flow_table *miss_t;
struct mlx5_fs_chains *chains;
struct mlx5e_post_act *post_act;
struct rhashtable ht;
struct mod_hdr_tbl mod_hdr;
struct mutex hairpin_tbl_lock; /* protects hairpin_tbl */
DECLARE_HASHTABLE(hairpin_tbl, 8);
struct notifier_block netdevice_nb;
struct netdev_net_notifier netdevice_nn;
struct mlx5_tc_ct_priv *ct;
struct mapping_ctx *mapping;
struct dentry *dfs_root;
/* tc action stats */
struct mlx5e_tc_act_stats_handle *action_stats_handle;
};
struct mlx5e_tc_attr_to_reg_mapping mlx5e_tc_attr_to_reg_mappings[] = {
[MAPPED_OBJ_TO_REG] = {
.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0,
.moffset = 0,
.mlen = 16,
},
[VPORT_TO_REG] = {
.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_0,
.moffset = 16,
.mlen = 16,
},
[TUNNEL_TO_REG] = {
.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,
.moffset = 8,
.mlen = ESW_TUN_OPTS_BITS + ESW_TUN_ID_BITS,
.soffset = MLX5_BYTE_OFF(fte_match_param,
misc_parameters_2.metadata_reg_c_1),
},
[ZONE_TO_REG] = zone_to_reg_ct,
[ZONE_RESTORE_TO_REG] = zone_restore_to_reg_ct,
[CTSTATE_TO_REG] = ctstate_to_reg_ct,
[MARK_TO_REG] = mark_to_reg_ct,
[LABELS_TO_REG] = labels_to_reg_ct,
[FTEID_TO_REG] = fteid_to_reg_ct,
/* For NIC rules we store the restore metadata directly
* into reg_b that is passed to SW since we don't
* jump between steering domains.
*/
[NIC_MAPPED_OBJ_TO_REG] = {
.mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,
.moffset = 0,
.mlen = 16,
},
[NIC_ZONE_RESTORE_TO_REG] = nic_zone_restore_to_reg_ct,
[PACKET_COLOR_TO_REG] = packet_color_to_reg,
};
struct mlx5e_tc_jump_state {
u32 jump_count;
bool jump_target;
struct mlx5_flow_attr *jumping_attr;
enum flow_action_id last_id;
u32 last_index;
};
struct mlx5e_tc_table *mlx5e_tc_table_alloc(void)
{
struct mlx5e_tc_table *tc;
tc = kvzalloc(sizeof(*tc), GFP_KERNEL);
return tc ? tc : ERR_PTR(-ENOMEM);
}
void mlx5e_tc_table_free(struct mlx5e_tc_table *tc)
{
kvfree(tc);
}
struct mlx5_fs_chains *mlx5e_nic_chains(struct mlx5e_tc_table *tc)
{
return tc->chains;
}
/* To avoid false lock dependency warning set the tc_ht lock
* class different than the lock class of the ht being used when deleting
* last flow from a group and then deleting a group, we get into del_sw_flow_group()
* which call rhashtable_destroy on fg->ftes_hash which will take ht->mutex but
* it's different than the ht->mutex here.
*/
static struct lock_class_key tc_ht_lock_key;
static struct lock_class_key tc_ht_wq_key;
static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow);
static void free_flow_post_acts(struct mlx5e_tc_flow *flow);
static void mlx5_free_flow_attr_actions(struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr);
void
mlx5e_tc_match_to_reg_match(struct mlx5_flow_spec *spec,
enum mlx5e_tc_attr_to_reg type,
u32 val,
u32 mask)
{
void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval;
int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
u32 max_mask = GENMASK(match_len - 1, 0);
__be32 curr_mask_be, curr_val_be;
u32 curr_mask, curr_val;
fmask = headers_c + soffset;
fval = headers_v + soffset;
memcpy(&curr_mask_be, fmask, 4);
memcpy(&curr_val_be, fval, 4);
curr_mask = be32_to_cpu(curr_mask_be);
curr_val = be32_to_cpu(curr_val_be);
//move to correct offset
WARN_ON(mask > max_mask);
mask <<= moffset;
val <<= moffset;
max_mask <<= moffset;
//zero val and mask
curr_mask &= ~max_mask;
curr_val &= ~max_mask;
//add current to mask
curr_mask |= mask;
curr_val |= val;
//back to be32 and write
curr_mask_be = cpu_to_be32(curr_mask);
curr_val_be = cpu_to_be32(curr_val);
memcpy(fmask, &curr_mask_be, 4);
memcpy(fval, &curr_val_be, 4);
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2;
}
void
mlx5e_tc_match_to_reg_get_match(struct mlx5_flow_spec *spec,
enum mlx5e_tc_attr_to_reg type,
u32 *val,
u32 *mask)
{
void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval;
int soffset = mlx5e_tc_attr_to_reg_mappings[type].soffset;
int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
int match_len = mlx5e_tc_attr_to_reg_mappings[type].mlen;
u32 max_mask = GENMASK(match_len - 1, 0);
__be32 curr_mask_be, curr_val_be;
u32 curr_mask, curr_val;
fmask = headers_c + soffset;
fval = headers_v + soffset;
memcpy(&curr_mask_be, fmask, 4);
memcpy(&curr_val_be, fval, 4);
curr_mask = be32_to_cpu(curr_mask_be);
curr_val = be32_to_cpu(curr_val_be);
*mask = (curr_mask >> moffset) & max_mask;
*val = (curr_val >> moffset) & max_mask;
}
int
mlx5e_tc_match_to_reg_set_and_get_id(struct mlx5_core_dev *mdev,
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
enum mlx5_flow_namespace_type ns,
enum mlx5e_tc_attr_to_reg type,
u32 data)
{
int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield;
int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen;
char *modact;
int err;
modact = mlx5e_mod_hdr_alloc(mdev, ns, mod_hdr_acts);
if (IS_ERR(modact))
return PTR_ERR(modact);
/* Firmware has 5bit length field and 0 means 32bits */
if (mlen == 32)
mlen = 0;
MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET);
MLX5_SET(set_action_in, modact, field, mfield);
MLX5_SET(set_action_in, modact, offset, moffset);
MLX5_SET(set_action_in, modact, length, mlen);
MLX5_SET(set_action_in, modact, data, data);
err = mod_hdr_acts->num_actions;
mod_hdr_acts->num_actions++;
return err;
}
static struct mlx5e_tc_act_stats_handle *
get_act_stats_handle(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
if (is_mdev_switchdev_mode(priv->mdev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
return uplink_priv->action_stats_handle;
}
return tc->action_stats_handle;
}
struct mlx5e_tc_int_port_priv *
mlx5e_get_int_port_priv(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
if (is_mdev_switchdev_mode(priv->mdev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
return uplink_priv->int_port_priv;
}
return NULL;
}
struct mlx5e_flow_meters *
mlx5e_get_flow_meters(struct mlx5_core_dev *dev)
{
struct mlx5_eswitch *esw = dev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
struct mlx5e_priv *priv;
if (is_mdev_switchdev_mode(dev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
priv = netdev_priv(uplink_rpriv->netdev);
if (!uplink_priv->flow_meters)
uplink_priv->flow_meters =
mlx5e_flow_meters_init(priv,
MLX5_FLOW_NAMESPACE_FDB,
uplink_priv->post_act);
if (!IS_ERR(uplink_priv->flow_meters))
return uplink_priv->flow_meters;
}
return NULL;
}
static struct mlx5_tc_ct_priv *
get_ct_priv(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
if (is_mdev_switchdev_mode(priv->mdev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
return uplink_priv->ct_priv;
}
return tc->ct;
}
static struct mlx5e_tc_psample *
get_sample_priv(struct mlx5e_priv *priv)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
if (is_mdev_switchdev_mode(priv->mdev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
return uplink_priv->tc_psample;
}
return NULL;
}
static struct mlx5e_post_act *
get_post_action(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
if (is_mdev_switchdev_mode(priv->mdev)) {
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
return uplink_priv->post_act;
}
return tc->post_act;
}
struct mlx5_flow_handle *
mlx5_tc_rule_insert(struct mlx5e_priv *priv,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
if (is_mdev_switchdev_mode(priv->mdev))
return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
return mlx5e_add_offloaded_nic_rule(priv, spec, attr);
}
void
mlx5_tc_rule_delete(struct mlx5e_priv *priv,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
if (is_mdev_switchdev_mode(priv->mdev)) {
mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
return;
}
mlx5e_del_offloaded_nic_rule(priv, rule, attr);
}
static bool
is_flow_meter_action(struct mlx5_flow_attr *attr)
{
return (((attr->action & MLX5_FLOW_CONTEXT_ACTION_EXECUTE_ASO) &&
(attr->exe_aso_type == MLX5_EXE_ASO_FLOW_METER)) ||
attr->flags & MLX5_ATTR_FLAG_MTU);
}
static int
mlx5e_tc_add_flow_meter(struct mlx5e_priv *priv,
struct mlx5_flow_attr *attr)
{
struct mlx5e_post_act *post_act = get_post_action(priv);
struct mlx5e_post_meter_priv *post_meter;
enum mlx5_flow_namespace_type ns_type;
struct mlx5e_flow_meter_handle *meter;
enum mlx5e_post_meter_type type;
meter = mlx5e_tc_meter_replace(priv->mdev, &attr->meter_attr.params);
if (IS_ERR(meter)) {
mlx5_core_err(priv->mdev, "Failed to get flow meter\n");
return PTR_ERR(meter);
}
ns_type = mlx5e_tc_meter_get_namespace(meter->flow_meters);
type = meter->params.mtu ? MLX5E_POST_METER_MTU : MLX5E_POST_METER_RATE;
post_meter = mlx5e_post_meter_init(priv, ns_type, post_act,
type,
meter->act_counter, meter->drop_counter,
attr->branch_true, attr->branch_false);
if (IS_ERR(post_meter)) {
mlx5_core_err(priv->mdev, "Failed to init post meter\n");
goto err_meter_init;
}
attr->meter_attr.meter = meter;
attr->meter_attr.post_meter = post_meter;
attr->dest_ft = mlx5e_post_meter_get_ft(post_meter);
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
return 0;
err_meter_init:
mlx5e_tc_meter_put(meter);
return PTR_ERR(post_meter);
}
static void
mlx5e_tc_del_flow_meter(struct mlx5_eswitch *esw, struct mlx5_flow_attr *attr)
{
mlx5e_post_meter_cleanup(esw, attr->meter_attr.post_meter);
mlx5e_tc_meter_put(attr->meter_attr.meter);
}
struct mlx5_flow_handle *
mlx5e_tc_rule_offload(struct mlx5e_priv *priv,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
int err;
if (!is_mdev_switchdev_mode(priv->mdev))
return mlx5e_add_offloaded_nic_rule(priv, spec, attr);
if (attr->flags & MLX5_ATTR_FLAG_SAMPLE)
return mlx5e_tc_sample_offload(get_sample_priv(priv), spec, attr);
if (is_flow_meter_action(attr)) {
err = mlx5e_tc_add_flow_meter(priv, attr);
if (err)
return ERR_PTR(err);
}
return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
}
void
mlx5e_tc_rule_unoffload(struct mlx5e_priv *priv,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
if (!is_mdev_switchdev_mode(priv->mdev)) {
mlx5e_del_offloaded_nic_rule(priv, rule, attr);
return;
}
if (attr->flags & MLX5_ATTR_FLAG_SAMPLE) {
mlx5e_tc_sample_unoffload(get_sample_priv(priv), rule, attr);
return;
}
mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
if (attr->meter_attr.meter)
mlx5e_tc_del_flow_meter(esw, attr);
}
int
mlx5e_tc_match_to_reg_set(struct mlx5_core_dev *mdev,
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
enum mlx5_flow_namespace_type ns,
enum mlx5e_tc_attr_to_reg type,
u32 data)
{
int ret = mlx5e_tc_match_to_reg_set_and_get_id(mdev, mod_hdr_acts, ns, type, data);
return ret < 0 ? ret : 0;
}
void mlx5e_tc_match_to_reg_mod_hdr_change(struct mlx5_core_dev *mdev,
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts,
enum mlx5e_tc_attr_to_reg type,
int act_id, u32 data)
{
int moffset = mlx5e_tc_attr_to_reg_mappings[type].moffset;
int mfield = mlx5e_tc_attr_to_reg_mappings[type].mfield;
int mlen = mlx5e_tc_attr_to_reg_mappings[type].mlen;
char *modact;
modact = mlx5e_mod_hdr_get_item(mod_hdr_acts, act_id);
/* Firmware has 5bit length field and 0 means 32bits */
if (mlen == 32)
mlen = 0;
MLX5_SET(set_action_in, modact, action_type, MLX5_ACTION_TYPE_SET);
MLX5_SET(set_action_in, modact, field, mfield);
MLX5_SET(set_action_in, modact, offset, moffset);
MLX5_SET(set_action_in, modact, length, mlen);
MLX5_SET(set_action_in, modact, data, data);
}
struct mlx5e_hairpin {
struct mlx5_hairpin *pair;
struct mlx5_core_dev *func_mdev;
struct mlx5e_priv *func_priv;
u32 tdn;
struct mlx5e_tir direct_tir;
int num_channels;
u8 log_num_packets;
struct mlx5e_rqt indir_rqt;
struct mlx5e_tir indir_tir[MLX5E_NUM_INDIR_TIRS];
struct mlx5_ttc_table *ttc;
};
struct mlx5e_hairpin_entry {
/* a node of a hash table which keeps all the hairpin entries */
struct hlist_node hairpin_hlist;
/* protects flows list */
spinlock_t flows_lock;
/* flows sharing the same hairpin */
struct list_head flows;
/* hpe's that were not fully initialized when dead peer update event
* function traversed them.
*/
struct list_head dead_peer_wait_list;
u16 peer_vhca_id;
u8 prio;
struct mlx5e_hairpin *hp;
refcount_t refcnt;
struct completion res_ready;
};
static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow);
struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow)
{
if (!flow || !refcount_inc_not_zero(&flow->refcnt))
return ERR_PTR(-EINVAL);
return flow;
}
void mlx5e_flow_put(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow)
{
if (refcount_dec_and_test(&flow->refcnt)) {
mlx5e_tc_del_flow(priv, flow);
kfree_rcu(flow, rcu_head);
}
}
bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow)
{
return flow_flag_test(flow, ESWITCH);
}
bool mlx5e_is_ft_flow(struct mlx5e_tc_flow *flow)
{
return flow_flag_test(flow, FT);
}
bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow)
{
return flow_flag_test(flow, OFFLOADED);
}
int mlx5e_get_flow_namespace(struct mlx5e_tc_flow *flow)
{
return mlx5e_is_eswitch_flow(flow) ?
MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL;
}
static struct mlx5_core_dev *
get_flow_counter_dev(struct mlx5e_tc_flow *flow)
{
return mlx5e_is_eswitch_flow(flow) ? flow->attr->esw_attr->counter_dev : flow->priv->mdev;
}
static struct mod_hdr_tbl *
get_mod_hdr_table(struct mlx5e_priv *priv, struct mlx5e_tc_flow *flow)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
return mlx5e_get_flow_namespace(flow) == MLX5_FLOW_NAMESPACE_FDB ?
&esw->offloads.mod_hdr :
&tc->mod_hdr;
}
int mlx5e_tc_attach_mod_hdr(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr)
{
struct mlx5e_mod_hdr_handle *mh;
mh = mlx5e_mod_hdr_attach(priv->mdev, get_mod_hdr_table(priv, flow),
mlx5e_get_flow_namespace(flow),
&attr->parse_attr->mod_hdr_acts);
if (IS_ERR(mh))
return PTR_ERR(mh);
WARN_ON(attr->modify_hdr);
attr->modify_hdr = mlx5e_mod_hdr_get(mh);
attr->mh = mh;
return 0;
}
void mlx5e_tc_detach_mod_hdr(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr)
{
/* flow wasn't fully initialized */
if (!attr->mh)
return;
mlx5e_mod_hdr_detach(priv->mdev, get_mod_hdr_table(priv, flow),
attr->mh);
attr->mh = NULL;
}
static
struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
{
struct mlx5_core_dev *mdev;
struct net_device *netdev;
struct mlx5e_priv *priv;
netdev = dev_get_by_index(net, ifindex);
if (!netdev)
return ERR_PTR(-ENODEV);
priv = netdev_priv(netdev);
mdev = priv->mdev;
dev_put(netdev);
/* Mirred tc action holds a refcount on the ifindex net_device (see
* net/sched/act_mirred.c:tcf_mirred_get_dev). So, it's okay to continue using mdev
* after dev_put(netdev), while we're in the context of adding a tc flow.
*
* The mdev pointer corresponds to the peer/out net_device of a hairpin. It is then
* stored in a hairpin object, which exists until all flows, that refer to it, get
* removed.
*
* On the other hand, after a hairpin object has been created, the peer net_device may
* be removed/unbound while there are still some hairpin flows that are using it. This
* case is handled by mlx5e_tc_hairpin_update_dead_peer, which is hooked to
* NETDEV_UNREGISTER event of the peer net_device.
*/
return mdev;
}
static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
{
struct mlx5e_tir_builder *builder;
int err;
builder = mlx5e_tir_builder_alloc(false);
if (!builder)
return -ENOMEM;
err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
if (err)
goto out;
mlx5e_tir_builder_build_inline(builder, hp->tdn, hp->pair->rqn[0]);
err = mlx5e_tir_init(&hp->direct_tir, builder, hp->func_mdev, false);
if (err)
goto create_tir_err;
out:
mlx5e_tir_builder_free(builder);
return err;
create_tir_err:
mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
goto out;
}
static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
{
mlx5e_tir_destroy(&hp->direct_tir);
mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
}
static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
{
struct mlx5e_priv *priv = hp->func_priv;
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_rss_params_indir *indir;
int err;
indir = kvmalloc(sizeof(*indir), GFP_KERNEL);
if (!indir)
return -ENOMEM;
mlx5e_rss_params_indir_init_uniform(indir, hp->num_channels);
err = mlx5e_rqt_init_indir(&hp->indir_rqt, mdev, hp->pair->rqn, hp->num_channels,
mlx5e_rx_res_get_current_hash(priv->rx_res).hfunc,
indir);
kvfree(indir);
return err;
}
static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
{
struct mlx5e_priv *priv = hp->func_priv;
struct mlx5e_rss_params_hash rss_hash;
enum mlx5_traffic_types tt, max_tt;
struct mlx5e_tir_builder *builder;
int err = 0;
builder = mlx5e_tir_builder_alloc(false);
if (!builder)
return -ENOMEM;
rss_hash = mlx5e_rx_res_get_current_hash(priv->rx_res);
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
struct mlx5e_rss_params_traffic_type rss_tt;
rss_tt = mlx5e_rss_get_default_tt_config(tt);
mlx5e_tir_builder_build_rqt(builder, hp->tdn,
mlx5e_rqt_get_rqtn(&hp->indir_rqt),
false);
mlx5e_tir_builder_build_rss(builder, &rss_hash, &rss_tt, false);
err = mlx5e_tir_init(&hp->indir_tir[tt], builder, hp->func_mdev, false);
if (err) {
mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
goto err_destroy_tirs;
}
mlx5e_tir_builder_clear(builder);
}
out:
mlx5e_tir_builder_free(builder);
return err;
err_destroy_tirs:
max_tt = tt;
for (tt = 0; tt < max_tt; tt++)
mlx5e_tir_destroy(&hp->indir_tir[tt]);
goto out;
}
static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
{
int tt;
for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
mlx5e_tir_destroy(&hp->indir_tir[tt]);
}
static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
struct ttc_params *ttc_params)
{
struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
int tt;
memset(ttc_params, 0, sizeof(*ttc_params));
ttc_params->ns = mlx5_get_flow_namespace(hp->func_mdev,
MLX5_FLOW_NAMESPACE_KERNEL);
for (tt = 0; tt < MLX5_NUM_TT; tt++) {
ttc_params->dests[tt].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
ttc_params->dests[tt].tir_num =
tt == MLX5_TT_ANY ?
mlx5e_tir_get_tirn(&hp->direct_tir) :
mlx5e_tir_get_tirn(&hp->indir_tir[tt]);
}
ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
ft_attr->prio = MLX5E_TC_PRIO;
}
static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
{
struct mlx5e_priv *priv = hp->func_priv;
struct ttc_params ttc_params;
struct mlx5_ttc_table *ttc;
int err;
err = mlx5e_hairpin_create_indirect_rqt(hp);
if (err)
return err;
err = mlx5e_hairpin_create_indirect_tirs(hp);
if (err)
goto err_create_indirect_tirs;
mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
hp->ttc = mlx5_create_ttc_table(priv->mdev, &ttc_params);
if (IS_ERR(hp->ttc)) {
err = PTR_ERR(hp->ttc);
goto err_create_ttc_table;
}
ttc = mlx5e_fs_get_ttc(priv->fs, false);
netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
hp->num_channels,
mlx5_get_ttc_flow_table(ttc)->id);
return 0;
err_create_ttc_table:
mlx5e_hairpin_destroy_indirect_tirs(hp);
err_create_indirect_tirs:
mlx5e_rqt_destroy(&hp->indir_rqt);
return err;
}
static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
{
mlx5_destroy_ttc_table(hp->ttc);
mlx5e_hairpin_destroy_indirect_tirs(hp);
mlx5e_rqt_destroy(&hp->indir_rqt);
}
static struct mlx5e_hairpin *
mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
int peer_ifindex)
{
struct mlx5_core_dev *func_mdev, *peer_mdev;
struct mlx5e_hairpin *hp;
struct mlx5_hairpin *pair;
int err;
hp = kzalloc(sizeof(*hp), GFP_KERNEL);
if (!hp)
return ERR_PTR(-ENOMEM);
func_mdev = priv->mdev;
peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
if (IS_ERR(peer_mdev)) {
err = PTR_ERR(peer_mdev);
goto create_pair_err;
}
pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
if (IS_ERR(pair)) {
err = PTR_ERR(pair);
goto create_pair_err;
}
hp->pair = pair;
hp->func_mdev = func_mdev;
hp->func_priv = priv;
hp->num_channels = params->num_channels;
hp->log_num_packets = params->log_num_packets;
err = mlx5e_hairpin_create_transport(hp);
if (err)
goto create_transport_err;
if (hp->num_channels > 1) {
err = mlx5e_hairpin_rss_init(hp);
if (err)
goto rss_init_err;
}
return hp;
rss_init_err:
mlx5e_hairpin_destroy_transport(hp);
create_transport_err:
mlx5_core_hairpin_destroy(hp->pair);
create_pair_err:
kfree(hp);
return ERR_PTR(err);
}
static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
{
if (hp->num_channels > 1)
mlx5e_hairpin_rss_cleanup(hp);
mlx5e_hairpin_destroy_transport(hp);
mlx5_core_hairpin_destroy(hp->pair);
kvfree(hp);
}
static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
{
return (peer_vhca_id << 16 | prio);
}
static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
u16 peer_vhca_id, u8 prio)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5e_hairpin_entry *hpe;
u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
hash_for_each_possible(tc->hairpin_tbl, hpe,
hairpin_hlist, hash_key) {
if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) {
refcount_inc(&hpe->refcnt);
return hpe;
}
}
return NULL;
}
static void mlx5e_hairpin_put(struct mlx5e_priv *priv,
struct mlx5e_hairpin_entry *hpe)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
/* no more hairpin flows for us, release the hairpin pair */
if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &tc->hairpin_tbl_lock))
return;
hash_del(&hpe->hairpin_hlist);
mutex_unlock(&tc->hairpin_tbl_lock);
if (!IS_ERR_OR_NULL(hpe->hp)) {
netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
dev_name(hpe->hp->pair->peer_mdev->device));
mlx5e_hairpin_destroy(hpe->hp);
}
WARN_ON(!list_empty(&hpe->flows));
kfree(hpe);
}
#define UNKNOWN_MATCH_PRIO 8
static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
struct mlx5_flow_spec *spec, u8 *match_prio,
struct netlink_ext_ack *extack)
{
void *headers_c, *headers_v;
u8 prio_val, prio_mask = 0;
bool vlan_present;
#ifdef CONFIG_MLX5_CORE_EN_DCB
if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
NL_SET_ERR_MSG_MOD(extack,
"only PCP trust state supported for hairpin");
return -EOPNOTSUPP;
}
#endif
headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
if (vlan_present) {
prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
}
if (!vlan_present || !prio_mask) {
prio_val = UNKNOWN_MATCH_PRIO;
} else if (prio_mask != 0x7) {
NL_SET_ERR_MSG_MOD(extack,
"masked priority match not supported for hairpin");
return -EOPNOTSUPP;
}
*match_prio = prio_val;
return 0;
}
static int debugfs_hairpin_num_active_get(void *data, u64 *val)
{
struct mlx5e_tc_table *tc = data;
struct mlx5e_hairpin_entry *hpe;
u32 cnt = 0;
u32 bkt;
mutex_lock(&tc->hairpin_tbl_lock);
hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist)
cnt++;
mutex_unlock(&tc->hairpin_tbl_lock);
*val = cnt;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_hairpin_num_active,
debugfs_hairpin_num_active_get, NULL, "%llu\n");
static int debugfs_hairpin_table_dump_show(struct seq_file *file, void *priv)
{
struct mlx5e_tc_table *tc = file->private;
struct mlx5e_hairpin_entry *hpe;
u32 bkt;
mutex_lock(&tc->hairpin_tbl_lock);
hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist)
seq_printf(file,
"Hairpin peer_vhca_id %u prio %u refcnt %u num_channels %u num_packets %lu\n",
hpe->peer_vhca_id, hpe->prio,
refcount_read(&hpe->refcnt), hpe->hp->num_channels,
BIT(hpe->hp->log_num_packets));
mutex_unlock(&tc->hairpin_tbl_lock);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(debugfs_hairpin_table_dump);
static void mlx5e_tc_debugfs_init(struct mlx5e_tc_table *tc,
struct dentry *dfs_root)
{
if (IS_ERR_OR_NULL(dfs_root))
return;
tc->dfs_root = debugfs_create_dir("tc", dfs_root);
debugfs_create_file("hairpin_num_active", 0444, tc->dfs_root, tc,
&fops_hairpin_num_active);
debugfs_create_file("hairpin_table_dump", 0444, tc->dfs_root, tc,
&debugfs_hairpin_table_dump_fops);
}
static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct devlink *devlink = priv_to_devlink(priv->mdev);
int peer_ifindex = parse_attr->mirred_ifindex[0];
union devlink_param_value val = {};
struct mlx5_hairpin_params params;
struct mlx5_core_dev *peer_mdev;
struct mlx5e_hairpin_entry *hpe;
struct mlx5e_hairpin *hp;
u8 match_prio;
u16 peer_id;
int err;
peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
if (IS_ERR(peer_mdev)) {
NL_SET_ERR_MSG_MOD(extack, "invalid ifindex of mirred device");
return PTR_ERR(peer_mdev);
}
if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
return -EOPNOTSUPP;
}
peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
extack);
if (err)
return err;
mutex_lock(&tc->hairpin_tbl_lock);
hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
if (hpe) {
mutex_unlock(&tc->hairpin_tbl_lock);
wait_for_completion(&hpe->res_ready);
if (IS_ERR(hpe->hp)) {
err = -EREMOTEIO;
goto out_err;
}
goto attach_flow;
}
hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
if (!hpe) {
mutex_unlock(&tc->hairpin_tbl_lock);
return -ENOMEM;
}
spin_lock_init(&hpe->flows_lock);
INIT_LIST_HEAD(&hpe->flows);
INIT_LIST_HEAD(&hpe->dead_peer_wait_list);
hpe->peer_vhca_id = peer_id;
hpe->prio = match_prio;
refcount_set(&hpe->refcnt, 1);
init_completion(&hpe->res_ready);
hash_add(tc->hairpin_tbl, &hpe->hairpin_hlist,
hash_hairpin_info(peer_id, match_prio));
mutex_unlock(&tc->hairpin_tbl_lock);
err = devl_param_driverinit_value_get(
devlink, MLX5_DEVLINK_PARAM_ID_HAIRPIN_QUEUE_SIZE, &val);
if (err) {
err = -ENOMEM;
goto out_err;
}
params.log_num_packets = ilog2(val.vu32);
params.log_data_size =
clamp_t(u32,
params.log_num_packets +
MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev),
MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz),
MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
params.q_counter = priv->q_counter;
err = devl_param_driverinit_value_get(
devlink, MLX5_DEVLINK_PARAM_ID_HAIRPIN_NUM_QUEUES, &val);
if (err) {
err = -ENOMEM;
goto out_err;
}
params.num_channels = val.vu32;
hp = mlx5e_hairpin_create(priv, ¶ms, peer_ifindex);
hpe->hp = hp;
complete_all(&hpe->res_ready);
if (IS_ERR(hp)) {
err = PTR_ERR(hp);
goto out_err;
}
netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
mlx5e_tir_get_tirn(&hp->direct_tir), hp->pair->rqn[0],
dev_name(hp->pair->peer_mdev->device),
hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
attach_flow:
if (hpe->hp->num_channels > 1) {
flow_flag_set(flow, HAIRPIN_RSS);
flow->attr->nic_attr->hairpin_ft =
mlx5_get_ttc_flow_table(hpe->hp->ttc);
} else {
flow->attr->nic_attr->hairpin_tirn = mlx5e_tir_get_tirn(&hpe->hp->direct_tir);
}
flow->hpe = hpe;
spin_lock(&hpe->flows_lock);
list_add(&flow->hairpin, &hpe->flows);
spin_unlock(&hpe->flows_lock);
return 0;
out_err:
mlx5e_hairpin_put(priv, hpe);
return err;
}
static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow)
{
/* flow wasn't fully initialized */
if (!flow->hpe)
return;
spin_lock(&flow->hpe->flows_lock);
list_del(&flow->hairpin);
spin_unlock(&flow->hpe->flows_lock);
mlx5e_hairpin_put(priv, flow->hpe);
flow->hpe = NULL;
}
struct mlx5_flow_handle *
mlx5e_add_offloaded_nic_rule(struct mlx5e_priv *priv,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_flow_context *flow_context = &spec->flow_context;
struct mlx5e_vlan_table *vlan = mlx5e_fs_get_vlan(priv->fs);
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_nic_flow_attr *nic_attr = attr->nic_attr;
struct mlx5_flow_destination dest[2] = {};
struct mlx5_fs_chains *nic_chains;
struct mlx5_flow_act flow_act = {
.action = attr->action,
.flags = FLOW_ACT_NO_APPEND,
};
struct mlx5_flow_handle *rule;
struct mlx5_flow_table *ft;
int dest_ix = 0;
nic_chains = mlx5e_nic_chains(tc);
flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
flow_context->flow_tag = nic_attr->flow_tag;
if (attr->dest_ft) {
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[dest_ix].ft = attr->dest_ft;
dest_ix++;
} else if (nic_attr->hairpin_ft) {
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
dest[dest_ix].ft = nic_attr->hairpin_ft;
dest_ix++;
} else if (nic_attr->hairpin_tirn) {
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
dest[dest_ix].tir_num = nic_attr->hairpin_tirn;
dest_ix++;
} else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
if (attr->dest_chain) {
dest[dest_ix].ft = mlx5_chains_get_table(nic_chains,
attr->dest_chain, 1,
MLX5E_TC_FT_LEVEL);
if (IS_ERR(dest[dest_ix].ft))
return ERR_CAST(dest[dest_ix].ft);
} else {
dest[dest_ix].ft = mlx5e_vlan_get_flowtable(vlan);
}
dest_ix++;
}
if (dest[0].type == MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE &&
MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level))
flow_act.flags |= FLOW_ACT_IGNORE_FLOW_LEVEL;
if (flow_act.action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
dest[dest_ix].counter_id = mlx5_fc_id(attr->counter);
dest_ix++;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
flow_act.modify_hdr = attr->modify_hdr;
mutex_lock(&tc->t_lock);
if (IS_ERR_OR_NULL(tc->t)) {
/* Create the root table here if doesn't exist yet */
tc->t =
mlx5_chains_get_table(nic_chains, 0, 1, MLX5E_TC_FT_LEVEL);
if (IS_ERR(tc->t)) {
mutex_unlock(&tc->t_lock);
netdev_err(priv->netdev,
"Failed to create tc offload table\n");
rule = ERR_CAST(tc->t);
goto err_ft_get;
}
}
mutex_unlock(&tc->t_lock);
if (attr->chain || attr->prio)
ft = mlx5_chains_get_table(nic_chains,
attr->chain, attr->prio,
MLX5E_TC_FT_LEVEL);
else
ft = attr->ft;
if (IS_ERR(ft)) {
rule = ERR_CAST(ft);
goto err_ft_get;
}
if (attr->outer_match_level != MLX5_MATCH_NONE)
spec->match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
rule = mlx5_add_flow_rules(ft, spec,
&flow_act, dest, dest_ix);
if (IS_ERR(rule))
goto err_rule;
return rule;
err_rule:
if (attr->chain || attr->prio)
mlx5_chains_put_table(nic_chains,
attr->chain, attr->prio,
MLX5E_TC_FT_LEVEL);
err_ft_get:
if (attr->dest_chain)
mlx5_chains_put_table(nic_chains,
attr->dest_chain, 1,
MLX5E_TC_FT_LEVEL);
return ERR_CAST(rule);
}
static int
alloc_flow_attr_counter(struct mlx5_core_dev *counter_dev,
struct mlx5_flow_attr *attr)
{
struct mlx5_fc *counter;
counter = mlx5_fc_create(counter_dev, true);
if (IS_ERR(counter))
return PTR_ERR(counter);
attr->counter = counter;
return 0;
}
static int
mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr = flow->attr;
struct mlx5_core_dev *dev = priv->mdev;
int err;
parse_attr = attr->parse_attr;
if (flow_flag_test(flow, HAIRPIN)) {
err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
if (err)
return err;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
err = alloc_flow_attr_counter(dev, attr);
if (err)
return err;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
err = mlx5e_tc_attach_mod_hdr(priv, flow, attr);
if (err)
return err;
}
flow->rule[0] = mlx5e_add_offloaded_nic_rule(priv, &parse_attr->spec, attr);
return PTR_ERR_OR_ZERO(flow->rule[0]);
}
void mlx5e_del_offloaded_nic_rule(struct mlx5e_priv *priv,
struct mlx5_flow_handle *rule,
struct mlx5_flow_attr *attr)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_fs_chains *nic_chains;
nic_chains = mlx5e_nic_chains(tc);
mlx5_del_flow_rules(rule);
if (attr->chain || attr->prio)
mlx5_chains_put_table(nic_chains, attr->chain, attr->prio,
MLX5E_TC_FT_LEVEL);
if (attr->dest_chain)
mlx5_chains_put_table(nic_chains, attr->dest_chain, 1,
MLX5E_TC_FT_LEVEL);
}
static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_flow_attr *attr = flow->attr;
flow_flag_clear(flow, OFFLOADED);
if (!IS_ERR_OR_NULL(flow->rule[0]))
mlx5e_del_offloaded_nic_rule(priv, flow->rule[0], attr);
/* Remove root table if no rules are left to avoid
* extra steering hops.
*/
mutex_lock(&tc->t_lock);
if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) &&
!IS_ERR_OR_NULL(tc->t)) {
mlx5_chains_put_table(mlx5e_nic_chains(tc), 0, 1, MLX5E_TC_FT_LEVEL);
tc->t = NULL;
}
mutex_unlock(&tc->t_lock);
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts);
mlx5e_tc_detach_mod_hdr(priv, flow, attr);
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
mlx5_fc_destroy(priv->mdev, attr->counter);
if (flow_flag_test(flow, HAIRPIN))
mlx5e_hairpin_flow_del(priv, flow);
free_flow_post_acts(flow);
mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr);
kvfree(attr->parse_attr);
kfree(flow->attr);
}
struct mlx5_flow_handle *
mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_spec *spec,
struct mlx5_flow_attr *attr)
{
struct mlx5_flow_handle *rule;
if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
rule = mlx5e_tc_rule_offload(flow->priv, spec, attr);
if (IS_ERR(rule))
return rule;
if (attr->esw_attr->split_count) {
flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
if (IS_ERR(flow->rule[1]))
goto err_rule1;
}
return rule;
err_rule1:
mlx5e_tc_rule_unoffload(flow->priv, rule, attr);
return flow->rule[1];
}
void mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr)
{
flow_flag_clear(flow, OFFLOADED);
if (attr->flags & MLX5_ATTR_FLAG_SLOW_PATH)
return mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
if (attr->esw_attr->split_count)
mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
mlx5e_tc_rule_unoffload(flow->priv, flow->rule[0], attr);
}
struct mlx5_flow_handle *
mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_spec *spec)
{
struct mlx5e_tc_mod_hdr_acts mod_acts = {};
struct mlx5e_mod_hdr_handle *mh = NULL;
struct mlx5_flow_attr *slow_attr;
struct mlx5_flow_handle *rule;
bool fwd_and_modify_cap;
u32 chain_mapping = 0;
int err;
slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
if (!slow_attr)
return ERR_PTR(-ENOMEM);
memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
slow_attr->esw_attr->split_count = 0;
slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH;
fwd_and_modify_cap = MLX5_CAP_ESW_FLOWTABLE((esw)->dev, fdb_modify_header_fwd_to_table);
if (!fwd_and_modify_cap)
goto skip_restore;
err = mlx5_chains_get_chain_mapping(esw_chains(esw), flow->attr->chain, &chain_mapping);
if (err)
goto err_get_chain;
err = mlx5e_tc_match_to_reg_set(esw->dev, &mod_acts, MLX5_FLOW_NAMESPACE_FDB,
MAPPED_OBJ_TO_REG, chain_mapping);
if (err)
goto err_reg_set;
mh = mlx5e_mod_hdr_attach(esw->dev, get_mod_hdr_table(flow->priv, flow),
MLX5_FLOW_NAMESPACE_FDB, &mod_acts);
if (IS_ERR(mh)) {
err = PTR_ERR(mh);
goto err_attach;
}
slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
slow_attr->modify_hdr = mlx5e_mod_hdr_get(mh);
skip_restore:
rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
if (IS_ERR(rule)) {
err = PTR_ERR(rule);
goto err_offload;
}
flow->attr->slow_mh = mh;
flow->chain_mapping = chain_mapping;
flow_flag_set(flow, SLOW);
mlx5e_mod_hdr_dealloc(&mod_acts);
kfree(slow_attr);
return rule;
err_offload:
if (fwd_and_modify_cap)
mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), mh);
err_attach:
err_reg_set:
if (fwd_and_modify_cap)
mlx5_chains_put_chain_mapping(esw_chains(esw), chain_mapping);
err_get_chain:
mlx5e_mod_hdr_dealloc(&mod_acts);
kfree(slow_attr);
return ERR_PTR(err);
}
void mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
struct mlx5e_tc_flow *flow)
{
struct mlx5e_mod_hdr_handle *slow_mh = flow->attr->slow_mh;
struct mlx5_flow_attr *slow_attr;
slow_attr = mlx5_alloc_flow_attr(MLX5_FLOW_NAMESPACE_FDB);
if (!slow_attr) {
mlx5_core_warn(flow->priv->mdev, "Unable to alloc attr to unoffload slow path rule\n");
return;
}
memcpy(slow_attr, flow->attr, ESW_FLOW_ATTR_SZ);
slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
slow_attr->esw_attr->split_count = 0;
slow_attr->flags |= MLX5_ATTR_FLAG_SLOW_PATH;
if (slow_mh) {
slow_attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
slow_attr->modify_hdr = mlx5e_mod_hdr_get(slow_mh);
}
mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
if (slow_mh) {
mlx5e_mod_hdr_detach(esw->dev, get_mod_hdr_table(flow->priv, flow), slow_mh);
mlx5_chains_put_chain_mapping(esw_chains(esw), flow->chain_mapping);
flow->chain_mapping = 0;
flow->attr->slow_mh = NULL;
}
flow_flag_clear(flow, SLOW);
kfree(slow_attr);
}
/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
* function.
*/
static void unready_flow_add(struct mlx5e_tc_flow *flow,
struct list_head *unready_flows)
{
flow_flag_set(flow, NOT_READY);
list_add_tail(&flow->unready, unready_flows);
}
/* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
* function.
*/
static void unready_flow_del(struct mlx5e_tc_flow *flow)
{
list_del(&flow->unready);
flow_flag_clear(flow, NOT_READY);
}
static void add_unready_flow(struct mlx5e_tc_flow *flow)
{
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *rpriv;
struct mlx5_eswitch *esw;
esw = flow->priv->mdev->priv.eswitch;
rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &rpriv->uplink_priv;
mutex_lock(&uplink_priv->unready_flows_lock);
unready_flow_add(flow, &uplink_priv->unready_flows);
mutex_unlock(&uplink_priv->unready_flows_lock);
}
static void remove_unready_flow(struct mlx5e_tc_flow *flow)
{
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *rpriv;
struct mlx5_eswitch *esw;
esw = flow->priv->mdev->priv.eswitch;
rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &rpriv->uplink_priv;
mutex_lock(&uplink_priv->unready_flows_lock);
if (flow_flag_test(flow, NOT_READY))
unready_flow_del(flow);
mutex_unlock(&uplink_priv->unready_flows_lock);
}
bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_dev)
{
struct mlx5_core_dev *out_mdev, *route_mdev;
struct mlx5e_priv *out_priv, *route_priv;
out_priv = netdev_priv(out_dev);
out_mdev = out_priv->mdev;
route_priv = netdev_priv(route_dev);
route_mdev = route_priv->mdev;
if (out_mdev->coredev_type != MLX5_COREDEV_PF)
return false;
if (route_mdev->coredev_type != MLX5_COREDEV_VF &&
route_mdev->coredev_type != MLX5_COREDEV_SF)
return false;
return mlx5e_same_hw_devs(out_priv, route_priv);
}
int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev, u16 *vport)
{
struct mlx5e_priv *out_priv, *route_priv;
struct mlx5_core_dev *route_mdev;
struct mlx5_devcom *devcom;
struct mlx5_eswitch *esw;
u16 vhca_id;
int err;
int i;
out_priv = netdev_priv(out_dev);
esw = out_priv->mdev->priv.eswitch;
route_priv = netdev_priv(route_dev);
route_mdev = route_priv->mdev;
vhca_id = MLX5_CAP_GEN(route_mdev, vhca_id);
err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
if (!err)
return err;
if (!mlx5_lag_is_active(out_priv->mdev))
return err;
rcu_read_lock();
devcom = out_priv->mdev->priv.devcom;
err = -ENODEV;
mlx5_devcom_for_each_peer_entry_rcu(devcom, MLX5_DEVCOM_ESW_OFFLOADS,
esw, i) {
err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport);
if (!err)
break;
}
rcu_read_unlock();
return err;
}
static int
verify_attr_actions(u32 actions, struct netlink_ext_ack *extack)
{
if (!(actions &
(MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
NL_SET_ERR_MSG_MOD(extack, "Rule must have at least one forward/drop action");
return -EOPNOTSUPP;
}
if (!(~actions &
(MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
NL_SET_ERR_MSG_MOD(extack, "Rule cannot support forward+drop action");
return -EOPNOTSUPP;
}
if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
actions & MLX5_FLOW_CONTEXT_ACTION_DROP) {
NL_SET_ERR_MSG_MOD(extack, "Drop with modify header action is not supported");
return -EOPNOTSUPP;
}
return 0;
}
static bool
has_encap_dests(struct mlx5_flow_attr *attr)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
int out_index;
for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
if (esw_attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP)
return true;
return false;
}
static int
post_process_attr(struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr,
struct netlink_ext_ack *extack)
{
bool vf_tun;
int err = 0;
err = verify_attr_actions(attr->action, extack);
if (err)
goto err_out;
if (mlx5e_is_eswitch_flow(flow) && has_encap_dests(attr)) {
err = mlx5e_tc_tun_encap_dests_set(flow->priv, flow, attr, extack, &vf_tun);
if (err)
goto err_out;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr);
if (err)
goto err_out;
}
if (attr->branch_true &&
attr->branch_true->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr->branch_true);
if (err)
goto err_out;
}
if (attr->branch_false &&
attr->branch_false->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
err = mlx5e_tc_attach_mod_hdr(flow->priv, flow, attr->branch_false);
if (err)
goto err_out;
}
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
err = alloc_flow_attr_counter(get_flow_counter_dev(flow), attr);
if (err)
goto err_out;
}
err_out:
return err;
}
static int
mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr = flow->attr;
struct mlx5_esw_flow_attr *esw_attr;
u32 max_prio, max_chain;
int err = 0;
parse_attr = attr->parse_attr;
esw_attr = attr->esw_attr;
/* We check chain range only for tc flows.
* For ft flows, we checked attr->chain was originally 0 and set it to
* FDB_FT_CHAIN which is outside tc range.
* See mlx5e_rep_setup_ft_cb().
*/
max_chain = mlx5_chains_get_chain_range(esw_chains(esw));
if (!mlx5e_is_ft_flow(flow) && attr->chain > max_chain) {
NL_SET_ERR_MSG_MOD(extack,
"Requested chain is out of supported range");
err = -EOPNOTSUPP;
goto err_out;
}
max_prio = mlx5_chains_get_prio_range(esw_chains(esw));
if (attr->prio > max_prio) {
NL_SET_ERR_MSG_MOD(extack,
"Requested priority is out of supported range");
err = -EOPNOTSUPP;
goto err_out;
}
if (flow_flag_test(flow, TUN_RX)) {
err = mlx5e_attach_decap_route(priv, flow);
if (err)
goto err_out;
if (!attr->chain && esw_attr->int_port &&
attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
/* If decap route device is internal port, change the
* source vport value in reg_c0 back to uplink just in
* case the rule performs goto chain > 0. If we have a miss
* on chain > 0 we want the metadata regs to hold the
* chain id so SW will resume handling of this packet
* from the proper chain.
*/
u32 metadata = mlx5_eswitch_get_vport_metadata_for_set(esw,
esw_attr->in_rep->vport);
err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts,
MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG,
metadata);
if (err)
goto err_out;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
}
}
if (flow_flag_test(flow, L3_TO_L2_DECAP)) {
err = mlx5e_attach_decap(priv, flow, extack);
if (err)
goto err_out;
}
if (netif_is_ovs_master(parse_attr->filter_dev)) {
struct mlx5e_tc_int_port *int_port;
if (attr->chain) {
NL_SET_ERR_MSG_MOD(extack,
"Internal port rule is only supported on chain 0");
err = -EOPNOTSUPP;
goto err_out;
}
if (attr->dest_chain) {
NL_SET_ERR_MSG_MOD(extack,
"Internal port rule offload doesn't support goto action");
err = -EOPNOTSUPP;
goto err_out;
}
int_port = mlx5e_tc_int_port_get(mlx5e_get_int_port_priv(priv),
parse_attr->filter_dev->ifindex,
flow_flag_test(flow, EGRESS) ?
MLX5E_TC_INT_PORT_EGRESS :
MLX5E_TC_INT_PORT_INGRESS);
if (IS_ERR(int_port)) {
err = PTR_ERR(int_port);
goto err_out;
}
esw_attr->int_port = int_port;
}
err = post_process_attr(flow, attr, extack);
if (err)
goto err_out;
err = mlx5e_tc_act_stats_add_flow(get_act_stats_handle(priv), flow);
if (err)
goto err_out;
/* we get here if one of the following takes place:
* (1) there's no error
* (2) there's an encap action and we don't have valid neigh
*/
if (flow_flag_test(flow, SLOW))
flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec);
else
flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
if (IS_ERR(flow->rule[0])) {
err = PTR_ERR(flow->rule[0]);
goto err_out;
}
flow_flag_set(flow, OFFLOADED);
return 0;
err_out:
flow_flag_set(flow, FAILED);
return err;
}
static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
{
struct mlx5_flow_spec *spec = &flow->attr->parse_attr->spec;
void *headers_v = MLX5_ADDR_OF(fte_match_param,
spec->match_value,
misc_parameters_3);
u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
headers_v,
geneve_tlv_option_0_data);
return !!geneve_tlv_opt_0_data;
}
static void free_branch_attr(struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr)
{
if (!attr)
return;
mlx5_free_flow_attr_actions(flow, attr);
kvfree(attr->parse_attr);
kfree(attr);
}
static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_flow_attr *attr = flow->attr;
mlx5e_put_flow_tunnel_id(flow);
remove_unready_flow(flow);
if (mlx5e_is_offloaded_flow(flow)) {
if (flow_flag_test(flow, SLOW))
mlx5e_tc_unoffload_from_slow_path(esw, flow);
else
mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
}
complete_all(&flow->del_hw_done);
if (mlx5_flow_has_geneve_opt(flow))
mlx5_geneve_tlv_option_del(priv->mdev->geneve);
if (flow->decap_route)
mlx5e_detach_decap_route(priv, flow);
mlx5_tc_ct_match_del(get_ct_priv(priv), &flow->attr->ct_attr);
if (flow_flag_test(flow, L3_TO_L2_DECAP))
mlx5e_detach_decap(priv, flow);
mlx5e_tc_act_stats_del_flow(get_act_stats_handle(priv), flow);
free_flow_post_acts(flow);
mlx5_free_flow_attr_actions(flow, attr);
kvfree(attr->esw_attr->rx_tun_attr);
kvfree(attr->parse_attr);
kfree(flow->attr);
}
struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
{
struct mlx5_flow_attr *attr;
attr = list_first_entry(&flow->attrs, struct mlx5_flow_attr, list);
return attr->counter;
}
/* Iterate over tmp_list of flows attached to flow_list head. */
void mlx5e_put_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list)
{
struct mlx5e_tc_flow *flow, *tmp;
list_for_each_entry_safe(flow, tmp, flow_list, tmp_list)
mlx5e_flow_put(priv, flow);
}
static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow,
int peer_index)
{
struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
struct mlx5e_tc_flow *peer_flow;
struct mlx5e_tc_flow *tmp;
if (!flow_flag_test(flow, ESWITCH) ||
!flow_flag_test(flow, DUP))
return;
mutex_lock(&esw->offloads.peer_mutex);
list_del(&flow->peer[peer_index]);
mutex_unlock(&esw->offloads.peer_mutex);
list_for_each_entry_safe(peer_flow, tmp, &flow->peer_flows, peer_flows) {
if (peer_index != mlx5_get_dev_index(peer_flow->priv->mdev))
continue;
if (refcount_dec_and_test(&peer_flow->refcnt)) {
mlx5e_tc_del_fdb_flow(peer_flow->priv, peer_flow);
list_del(&peer_flow->peer_flows);
kfree(peer_flow);
}
}
if (list_empty(&flow->peer_flows))
flow_flag_clear(flow, DUP);
}
static void mlx5e_tc_del_fdb_peers_flow(struct mlx5e_tc_flow *flow)
{
int i;
for (i = 0; i < MLX5_MAX_PORTS; i++) {
if (i == mlx5_get_dev_index(flow->priv->mdev))
continue;
mlx5e_tc_del_fdb_peer_flow(flow, i);
}
}
static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow)
{
if (mlx5e_is_eswitch_flow(flow)) {
struct mlx5_devcom *devcom = flow->priv->mdev->priv.devcom;
if (!mlx5_devcom_for_each_peer_begin(devcom, MLX5_DEVCOM_ESW_OFFLOADS)) {
mlx5e_tc_del_fdb_flow(priv, flow);
return;
}
mlx5e_tc_del_fdb_peers_flow(flow);
mlx5_devcom_for_each_peer_end(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
mlx5e_tc_del_fdb_flow(priv, flow);
} else {
mlx5e_tc_del_nic_flow(priv, flow);
}
}
static bool flow_requires_tunnel_mapping(u32 chain, struct flow_cls_offload *f)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_action *flow_action = &rule->action;
const struct flow_action_entry *act;
int i;
if (chain)
return false;
flow_action_for_each(i, act, flow_action) {
switch (act->id) {
case FLOW_ACTION_GOTO:
return true;
case FLOW_ACTION_SAMPLE:
return true;
default:
continue;
}
}
return false;
}
static int
enc_opts_is_dont_care_or_full_match(struct mlx5e_priv *priv,
struct flow_dissector_key_enc_opts *opts,
struct netlink_ext_ack *extack,
bool *dont_care)
{
struct geneve_opt *opt;
int off = 0;
*dont_care = true;
while (opts->len > off) {
opt = (struct geneve_opt *)&opts->data[off];
if (!(*dont_care) || opt->opt_class || opt->type ||
memchr_inv(opt->opt_data, 0, opt->length * 4)) {
*dont_care = false;
if (opt->opt_class != htons(U16_MAX) ||
opt->type != U8_MAX) {
NL_SET_ERR_MSG_MOD(extack,
"Partial match of tunnel options in chain > 0 isn't supported");
netdev_warn(priv->netdev,
"Partial match of tunnel options in chain > 0 isn't supported");
return -EOPNOTSUPP;
}
}
off += sizeof(struct geneve_opt) + opt->length * 4;
}
return 0;
}
#define COPY_DISSECTOR(rule, diss_key, dst)\
({ \
struct flow_rule *__rule = (rule);\
typeof(dst) __dst = dst;\
\
memcpy(__dst,\
skb_flow_dissector_target(__rule->match.dissector,\
diss_key,\
__rule->match.key),\
sizeof(*__dst));\
})
static int mlx5e_get_flow_tunnel_id(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct flow_cls_offload *f,
struct net_device *filter_dev)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct netlink_ext_ack *extack = f->common.extack;
struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts;
struct flow_match_enc_opts enc_opts_match;
struct tunnel_match_enc_opts tun_enc_opts;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5_flow_attr *attr = flow->attr;
struct mlx5e_rep_priv *uplink_rpriv;
struct tunnel_match_key tunnel_key;
bool enc_opts_is_dont_care = true;
u32 tun_id, enc_opts_id = 0;
struct mlx5_eswitch *esw;
u32 value, mask;
int err;
esw = priv->mdev->priv.eswitch;
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
memset(&tunnel_key, 0, sizeof(tunnel_key));
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL,
&tunnel_key.enc_control);
if (tunnel_key.enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS)
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
&tunnel_key.enc_ipv4);
else
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
&tunnel_key.enc_ipv6);
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_IP, &tunnel_key.enc_ip);
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_PORTS,
&tunnel_key.enc_tp);
COPY_DISSECTOR(rule, FLOW_DISSECTOR_KEY_ENC_KEYID,
&tunnel_key.enc_key_id);
tunnel_key.filter_ifindex = filter_dev->ifindex;
err = mapping_add(uplink_priv->tunnel_mapping, &tunnel_key, &tun_id);
if (err)
return err;
flow_rule_match_enc_opts(rule, &enc_opts_match);
err = enc_opts_is_dont_care_or_full_match(priv,
enc_opts_match.mask,
extack,
&enc_opts_is_dont_care);
if (err)
goto err_enc_opts;
if (!enc_opts_is_dont_care) {
memset(&tun_enc_opts, 0, sizeof(tun_enc_opts));
memcpy(&tun_enc_opts.key, enc_opts_match.key,
sizeof(*enc_opts_match.key));
memcpy(&tun_enc_opts.mask, enc_opts_match.mask,
sizeof(*enc_opts_match.mask));
err = mapping_add(uplink_priv->tunnel_enc_opts_mapping,
&tun_enc_opts, &enc_opts_id);
if (err)
goto err_enc_opts;
}
value = tun_id << ENC_OPTS_BITS | enc_opts_id;
mask = enc_opts_id ? TUNNEL_ID_MASK :
(TUNNEL_ID_MASK & ~ENC_OPTS_BITS_MASK);
if (attr->chain) {
mlx5e_tc_match_to_reg_match(&attr->parse_attr->spec,
TUNNEL_TO_REG, value, mask);
} else {
mod_hdr_acts = &attr->parse_attr->mod_hdr_acts;
err = mlx5e_tc_match_to_reg_set(priv->mdev,
mod_hdr_acts, MLX5_FLOW_NAMESPACE_FDB,
TUNNEL_TO_REG, value);
if (err)
goto err_set;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
}
flow->attr->tunnel_id = value;
return 0;
err_set:
if (enc_opts_id)
mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
enc_opts_id);
err_enc_opts:
mapping_remove(uplink_priv->tunnel_mapping, tun_id);
return err;
}
static void mlx5e_put_flow_tunnel_id(struct mlx5e_tc_flow *flow)
{
u32 enc_opts_id = flow->attr->tunnel_id & ENC_OPTS_BITS_MASK;
u32 tun_id = flow->attr->tunnel_id >> ENC_OPTS_BITS;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
struct mlx5_eswitch *esw;
esw = flow->priv->mdev->priv.eswitch;
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
if (tun_id)
mapping_remove(uplink_priv->tunnel_mapping, tun_id);
if (enc_opts_id)
mapping_remove(uplink_priv->tunnel_enc_opts_mapping,
enc_opts_id);
}
void mlx5e_tc_set_ethertype(struct mlx5_core_dev *mdev,
struct flow_match_basic *match, bool outer,
void *headers_c, void *headers_v)
{
bool ip_version_cap;
ip_version_cap = outer ?
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_ip_version) :
MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.inner_ip_version);
if (ip_version_cap && match->mask->n_proto == htons(0xFFFF) &&
(match->key->n_proto == htons(ETH_P_IP) ||
match->key->n_proto == htons(ETH_P_IPV6))) {
MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_version);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_version,
match->key->n_proto == htons(ETH_P_IP) ? 4 : 6);
} else {
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
ntohs(match->mask->n_proto));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
ntohs(match->key->n_proto));
}
}
u8 mlx5e_tc_get_ip_version(struct mlx5_flow_spec *spec, bool outer)
{
void *headers_v;
u16 ethertype;
u8 ip_version;
if (outer)
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
else
headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers);
ip_version = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_version);
/* Return ip_version converted from ethertype anyway */
if (!ip_version) {
ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
if (ethertype == ETH_P_IP || ethertype == ETH_P_ARP)
ip_version = 4;
else if (ethertype == ETH_P_IPV6)
ip_version = 6;
}
return ip_version;
}
/* Tunnel device follows RFC 6040, see include/net/inet_ecn.h.
* And changes inner ip_ecn depending on inner and outer ip_ecn as follows:
* +---------+----------------------------------------+
* |Arriving | Arriving Outer Header |
* | Inner +---------+---------+---------+----------+
* | Header | Not-ECT | ECT(0) | ECT(1) | CE |
* +---------+---------+---------+---------+----------+
* | Not-ECT | Not-ECT | Not-ECT | Not-ECT | <drop> |
* | ECT(0) | ECT(0) | ECT(0) | ECT(1) | CE* |
* | ECT(1) | ECT(1) | ECT(1) | ECT(1)* | CE* |
* | CE | CE | CE | CE | CE |
* +---------+---------+---------+---------+----------+
*
* Tc matches on inner after decapsulation on tunnel device, but hw offload matches
* the inner ip_ecn value before hardware decap action.
*
* Cells marked are changed from original inner packet ip_ecn value during decap, and
* so matching those values on inner ip_ecn before decap will fail.
*
* The following helper allows offload when inner ip_ecn won't be changed by outer ip_ecn,
* except for the outer ip_ecn = CE, where in all cases inner ip_ecn will be changed to CE,
* and such we can drop the inner ip_ecn=CE match.
*/
static int mlx5e_tc_verify_tunnel_ecn(struct mlx5e_priv *priv,
struct flow_cls_offload *f,
bool *match_inner_ecn)
{
u8 outer_ecn_mask = 0, outer_ecn_key = 0, inner_ecn_mask = 0, inner_ecn_key = 0;
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct netlink_ext_ack *extack = f->common.extack;
struct flow_match_ip match;
*match_inner_ecn = true;
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
flow_rule_match_enc_ip(rule, &match);
outer_ecn_key = match.key->tos & INET_ECN_MASK;
outer_ecn_mask = match.mask->tos & INET_ECN_MASK;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
flow_rule_match_ip(rule, &match);
inner_ecn_key = match.key->tos & INET_ECN_MASK;
inner_ecn_mask = match.mask->tos & INET_ECN_MASK;
}
if (outer_ecn_mask != 0 && outer_ecn_mask != INET_ECN_MASK) {
NL_SET_ERR_MSG_MOD(extack, "Partial match on enc_tos ecn bits isn't supported");
netdev_warn(priv->netdev, "Partial match on enc_tos ecn bits isn't supported");
return -EOPNOTSUPP;
}
if (!outer_ecn_mask) {
if (!inner_ecn_mask)
return 0;
NL_SET_ERR_MSG_MOD(extack,
"Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
netdev_warn(priv->netdev,
"Matching on tos ecn bits without also matching enc_tos ecn bits isn't supported");
return -EOPNOTSUPP;
}
if (inner_ecn_mask && inner_ecn_mask != INET_ECN_MASK) {
NL_SET_ERR_MSG_MOD(extack,
"Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
netdev_warn(priv->netdev,
"Partial match on tos ecn bits with match on enc_tos ecn bits isn't supported");
return -EOPNOTSUPP;
}
if (!inner_ecn_mask)
return 0;
/* Both inner and outer have full mask on ecn */
if (outer_ecn_key == INET_ECN_ECT_1) {
/* inner ecn might change by DECAP action */
NL_SET_ERR_MSG_MOD(extack, "Match on enc_tos ecn = ECT(1) isn't supported");
netdev_warn(priv->netdev, "Match on enc_tos ecn = ECT(1) isn't supported");
return -EOPNOTSUPP;
}
if (outer_ecn_key != INET_ECN_CE)
return 0;
if (inner_ecn_key != INET_ECN_CE) {
/* Can't happen in software, as packet ecn will be changed to CE after decap */
NL_SET_ERR_MSG_MOD(extack,
"Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
netdev_warn(priv->netdev,
"Match on tos enc_tos ecn = CE while match on tos ecn != CE isn't supported");
return -EOPNOTSUPP;
}
/* outer ecn = CE, inner ecn = CE, as decap will change inner ecn to CE in anycase,
* drop match on inner ecn
*/
*match_inner_ecn = false;
return 0;
}
static int parse_tunnel_attr(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_spec *spec,
struct flow_cls_offload *f,
struct net_device *filter_dev,
u8 *match_level,
bool *match_inner)
{
struct mlx5e_tc_tunnel *tunnel = mlx5e_get_tc_tun(filter_dev);
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct netlink_ext_ack *extack = f->common.extack;
bool needs_mapping, sets_mapping;
int err;
if (!mlx5e_is_eswitch_flow(flow)) {
NL_SET_ERR_MSG_MOD(extack, "Match on tunnel is not supported");
return -EOPNOTSUPP;
}
needs_mapping = !!flow->attr->chain;
sets_mapping = flow_requires_tunnel_mapping(flow->attr->chain, f);
*match_inner = !needs_mapping;
if ((needs_mapping || sets_mapping) &&
!mlx5_eswitch_reg_c1_loopback_enabled(esw)) {
NL_SET_ERR_MSG_MOD(extack,
"Chains on tunnel devices isn't supported without register loopback support");
netdev_warn(priv->netdev,
"Chains on tunnel devices isn't supported without register loopback support");
return -EOPNOTSUPP;
}
if (!flow->attr->chain) {
err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
match_level);
if (err) {
NL_SET_ERR_MSG_MOD(extack,
"Failed to parse tunnel attributes");
netdev_warn(priv->netdev,
"Failed to parse tunnel attributes");
return err;
}
/* With mpls over udp we decapsulate using packet reformat
* object
*/
if (!netif_is_bareudp(filter_dev))
flow->attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
err = mlx5e_tc_set_attr_rx_tun(flow, spec);
if (err)
return err;
} else if (tunnel) {
struct mlx5_flow_spec *tmp_spec;
tmp_spec = kvzalloc(sizeof(*tmp_spec), GFP_KERNEL);
if (!tmp_spec) {
NL_SET_ERR_MSG_MOD(extack, "Failed to allocate memory for tunnel tmp spec");
netdev_warn(priv->netdev, "Failed to allocate memory for tunnel tmp spec");
return -ENOMEM;
}
memcpy(tmp_spec, spec, sizeof(*tmp_spec));
err = mlx5e_tc_tun_parse(filter_dev, priv, tmp_spec, f, match_level);
if (err) {
kvfree(tmp_spec);
NL_SET_ERR_MSG_MOD(extack, "Failed to parse tunnel attributes");
netdev_warn(priv->netdev, "Failed to parse tunnel attributes");
return err;
}
err = mlx5e_tc_set_attr_rx_tun(flow, tmp_spec);
kvfree(tmp_spec);
if (err)
return err;
}
if (!needs_mapping && !sets_mapping)
return 0;
return mlx5e_get_flow_tunnel_id(priv, flow, f, filter_dev);
}
static void *get_match_inner_headers_criteria(struct mlx5_flow_spec *spec)
{
return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
inner_headers);
}
static void *get_match_inner_headers_value(struct mlx5_flow_spec *spec)
{
return MLX5_ADDR_OF(fte_match_param, spec->match_value,
inner_headers);
}
static void *get_match_outer_headers_criteria(struct mlx5_flow_spec *spec)
{
return MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
outer_headers);
}
static void *get_match_outer_headers_value(struct mlx5_flow_spec *spec)
{
return MLX5_ADDR_OF(fte_match_param, spec->match_value,
outer_headers);
}
void *mlx5e_get_match_headers_value(u32 flags, struct mlx5_flow_spec *spec)
{
return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
get_match_inner_headers_value(spec) :
get_match_outer_headers_value(spec);
}
void *mlx5e_get_match_headers_criteria(u32 flags, struct mlx5_flow_spec *spec)
{
return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
get_match_inner_headers_criteria(spec) :
get_match_outer_headers_criteria(spec);
}
static int mlx5e_flower_parse_meta(struct net_device *filter_dev,
struct flow_cls_offload *f)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct netlink_ext_ack *extack = f->common.extack;
struct net_device *ingress_dev;
struct flow_match_meta match;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_META))
return 0;
flow_rule_match_meta(rule, &match);
if (match.mask->l2_miss) {
NL_SET_ERR_MSG_MOD(f->common.extack, "Can't match on \"l2_miss\"");
return -EOPNOTSUPP;
}
if (!match.mask->ingress_ifindex)
return 0;
if (match.mask->ingress_ifindex != 0xFFFFFFFF) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported ingress ifindex mask");
return -EOPNOTSUPP;
}
ingress_dev = __dev_get_by_index(dev_net(filter_dev),
match.key->ingress_ifindex);
if (!ingress_dev) {
NL_SET_ERR_MSG_MOD(extack,
"Can't find the ingress port to match on");
return -ENOENT;
}
if (ingress_dev != filter_dev) {
NL_SET_ERR_MSG_MOD(extack,
"Can't match on the ingress filter port");
return -EOPNOTSUPP;
}
return 0;
}
static bool skip_key_basic(struct net_device *filter_dev,
struct flow_cls_offload *f)
{
/* When doing mpls over udp decap, the user needs to provide
* MPLS_UC as the protocol in order to be able to match on mpls
* label fields. However, the actual ethertype is IP so we want to
* avoid matching on this, otherwise we'll fail the match.
*/
if (netif_is_bareudp(filter_dev) && f->common.chain_index == 0)
return true;
return false;
}
static int __parse_cls_flower(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_spec *spec,
struct flow_cls_offload *f,
struct net_device *filter_dev,
u8 *inner_match_level, u8 *outer_match_level)
{
struct netlink_ext_ack *extack = f->common.extack;
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);
void *misc_c_3 = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
misc_parameters_3);
void *misc_v_3 = MLX5_ADDR_OF(fte_match_param, spec->match_value,
misc_parameters_3);
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct flow_dissector *dissector = rule->match.dissector;
enum fs_flow_table_type fs_type;
bool match_inner_ecn = true;
u16 addr_type = 0;
u8 ip_proto = 0;
u8 *match_level;
int err;
fs_type = mlx5e_is_eswitch_flow(flow) ? FS_FT_FDB : FS_FT_NIC_RX;
match_level = outer_match_level;
if (dissector->used_keys &
~(BIT(FLOW_DISSECTOR_KEY_META) |
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_CVLAN) |
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) |
BIT(FLOW_DISSECTOR_KEY_TCP) |
BIT(FLOW_DISSECTOR_KEY_IP) |
BIT(FLOW_DISSECTOR_KEY_CT) |
BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
BIT(FLOW_DISSECTOR_KEY_ENC_OPTS) |
BIT(FLOW_DISSECTOR_KEY_ICMP) |
BIT(FLOW_DISSECTOR_KEY_MPLS))) {
NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
netdev_dbg(priv->netdev, "Unsupported key used: 0x%x\n",
dissector->used_keys);
return -EOPNOTSUPP;
}
if (mlx5e_get_tc_tun(filter_dev)) {
bool match_inner = false;
err = parse_tunnel_attr(priv, flow, spec, f, filter_dev,
outer_match_level, &match_inner);
if (err)
return err;
if (match_inner) {
/* header pointers should point to the inner headers
* if the packet was decapsulated already.
* outer headers are set by parse_tunnel_attr.
*/
match_level = inner_match_level;
headers_c = get_match_inner_headers_criteria(spec);
headers_v = get_match_inner_headers_value(spec);
}
err = mlx5e_tc_verify_tunnel_ecn(priv, f, &match_inner_ecn);
if (err)
return err;
}
err = mlx5e_flower_parse_meta(filter_dev, f);
if (err)
return err;
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC) &&
!skip_key_basic(filter_dev, f)) {
struct flow_match_basic match;
flow_rule_match_basic(rule, &match);
mlx5e_tc_set_ethertype(priv->mdev, &match,
match_level == outer_match_level,
headers_c, headers_v);
if (match.mask->n_proto)
*match_level = MLX5_MATCH_L2;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
is_vlan_dev(filter_dev)) {
struct flow_dissector_key_vlan filter_dev_mask;
struct flow_dissector_key_vlan filter_dev_key;
struct flow_match_vlan match;
if (is_vlan_dev(filter_dev)) {
match.key = &filter_dev_key;
match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
match.key->vlan_priority = 0;
match.mask = &filter_dev_mask;
memset(match.mask, 0xff, sizeof(*match.mask));
match.mask->vlan_priority = 0;
} else {
flow_rule_match_vlan(rule, &match);
}
if (match.mask->vlan_id ||
match.mask->vlan_priority ||
match.mask->vlan_tpid) {
if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
svlan_tag, 1);
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
svlan_tag, 1);
} else {
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,
match.mask->vlan_id);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
match.key->vlan_id);
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
match.mask->vlan_priority);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
match.key->vlan_priority);
*match_level = MLX5_MATCH_L2;
if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN) &&
match.mask->vlan_eth_type &&
MLX5_CAP_FLOWTABLE_TYPE(priv->mdev,
ft_field_support.outer_second_vid,
fs_type)) {
MLX5_SET(fte_match_set_misc, misc_c,
outer_second_cvlan_tag, 1);
spec->match_criteria_enable |=
MLX5_MATCH_MISC_PARAMETERS;
}
}
} else if (*match_level != MLX5_MATCH_NONE) {
/* cvlan_tag enabled in match criteria and
* disabled in match value means both S & C tags
* don't exist (untagged of both)
*/
MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
*match_level = MLX5_MATCH_L2;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
struct flow_match_vlan match;
flow_rule_match_cvlan(rule, &match);
if (match.mask->vlan_id ||
match.mask->vlan_priority ||
match.mask->vlan_tpid) {
if (!MLX5_CAP_FLOWTABLE_TYPE(priv->mdev, ft_field_support.outer_second_vid,
fs_type)) {
NL_SET_ERR_MSG_MOD(extack,
"Matching on CVLAN is not supported");
return -EOPNOTSUPP;
}
if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
MLX5_SET(fte_match_set_misc, misc_c,
outer_second_svlan_tag, 1);
MLX5_SET(fte_match_set_misc, misc_v,
outer_second_svlan_tag, 1);
} else {
MLX5_SET(fte_match_set_misc, misc_c,
outer_second_cvlan_tag, 1);
MLX5_SET(fte_match_set_misc, misc_v,
outer_second_cvlan_tag, 1);
}
MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
match.mask->vlan_id);
MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
match.key->vlan_id);
MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
match.mask->vlan_priority);
MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
match.key->vlan_priority);
*match_level = MLX5_MATCH_L2;
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS;
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
struct flow_match_eth_addrs match;
flow_rule_match_eth_addrs(rule, &match);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dmac_47_16),
match.mask->dst);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dmac_47_16),
match.key->dst);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
smac_47_16),
match.mask->src);
ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
smac_47_16),
match.key->src);
if (!is_zero_ether_addr(match.mask->src) ||
!is_zero_ether_addr(match.mask->dst))
*match_level = MLX5_MATCH_L2;
}
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;
/* the HW doesn't support frag first/later */
if (match.mask->flags & FLOW_DIS_FIRST_FRAG) {
NL_SET_ERR_MSG_MOD(extack, "Match on frag first/later is not supported");
return -EOPNOTSUPP;
}
if (match.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,
match.key->flags & FLOW_DIS_IS_FRAGMENT);
/* the HW doesn't need L3 inline to match on frag=no */
if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
*match_level = MLX5_MATCH_L2;
/* *** L2 attributes parsing up to here *** */
else
*match_level = MLX5_MATCH_L3;
}
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
struct flow_match_basic match;
flow_rule_match_basic(rule, &match);
ip_proto = match.key->ip_proto;
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
match.mask->ip_proto);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
match.key->ip_proto);
if (match.mask->ip_proto)
*match_level = MLX5_MATCH_L3;
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
struct flow_match_ipv4_addrs match;
flow_rule_match_ipv4_addrs(rule, &match);
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&match.mask->src, sizeof(match.mask->src));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
src_ipv4_src_ipv6.ipv4_layout.ipv4),
&match.key->src, sizeof(match.key->src));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&match.mask->dst, sizeof(match.mask->dst));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
&match.key->dst, sizeof(match.key->dst));
if (match.mask->src || match.mask->dst)
*match_level = MLX5_MATCH_L3;
}
if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
struct flow_match_ipv6_addrs match;
flow_rule_match_ipv6_addrs(rule, &match);
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&match.mask->src, sizeof(match.mask->src));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
src_ipv4_src_ipv6.ipv6_layout.ipv6),
&match.key->src, sizeof(match.key->src));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&match.mask->dst, sizeof(match.mask->dst));
memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
&match.key->dst, sizeof(match.key->dst));
if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
*match_level = MLX5_MATCH_L3;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
struct flow_match_ip match;
flow_rule_match_ip(rule, &match);
if (match_inner_ecn) {
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
match.mask->tos & 0x3);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
match.key->tos & 0x3);
}
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
match.mask->tos >> 2);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
match.key->tos >> 2);
MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
match.mask->ttl);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
match.key->ttl);
if (match.mask->ttl &&
!MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
ft_field_support.outer_ipv4_ttl)) {
NL_SET_ERR_MSG_MOD(extack,
"Matching on TTL is not supported");
return -EOPNOTSUPP;
}
if (match.mask->tos || match.mask->ttl)
*match_level = MLX5_MATCH_L3;
}
/* *** L3 attributes parsing up to here *** */
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
struct flow_match_ports match;
flow_rule_match_ports(rule, &match);
switch (ip_proto) {
case IPPROTO_TCP:
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
tcp_sport, ntohs(match.mask->src));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
tcp_sport, ntohs(match.key->src));
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
tcp_dport, ntohs(match.mask->dst));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
tcp_dport, ntohs(match.key->dst));
break;
case IPPROTO_UDP:
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
udp_sport, ntohs(match.mask->src));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
udp_sport, ntohs(match.key->src));
MLX5_SET(fte_match_set_lyr_2_4, headers_c,
udp_dport, ntohs(match.mask->dst));
MLX5_SET(fte_match_set_lyr_2_4, headers_v,
udp_dport, ntohs(match.key->dst));
break;
default:
NL_SET_ERR_MSG_MOD(extack,
"Only UDP and TCP transports are supported for L4 matching");
netdev_err(priv->netdev,
"Only UDP and TCP transport are supported\n");
return -EINVAL;
}
if (match.mask->src || match.mask->dst)
*match_level = MLX5_MATCH_L4;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
struct flow_match_tcp match;
flow_rule_match_tcp(rule, &match);
MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
ntohs(match.mask->flags));
MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
ntohs(match.key->flags));
if (match.mask->flags)
*match_level = MLX5_MATCH_L4;
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ICMP)) {
struct flow_match_icmp match;
flow_rule_match_icmp(rule, &match);
switch (ip_proto) {
case IPPROTO_ICMP:
if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
MLX5_FLEX_PROTO_ICMP)) {
NL_SET_ERR_MSG_MOD(extack,
"Match on Flex protocols for ICMP is not supported");
return -EOPNOTSUPP;
}
MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_type,
match.mask->type);
MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_type,
match.key->type);
MLX5_SET(fte_match_set_misc3, misc_c_3, icmp_code,
match.mask->code);
MLX5_SET(fte_match_set_misc3, misc_v_3, icmp_code,
match.key->code);
break;
case IPPROTO_ICMPV6:
if (!(MLX5_CAP_GEN(priv->mdev, flex_parser_protocols) &
MLX5_FLEX_PROTO_ICMPV6)) {
NL_SET_ERR_MSG_MOD(extack,
"Match on Flex protocols for ICMPV6 is not supported");
return -EOPNOTSUPP;
}
MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_type,
match.mask->type);
MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_type,
match.key->type);
MLX5_SET(fte_match_set_misc3, misc_c_3, icmpv6_code,
match.mask->code);
MLX5_SET(fte_match_set_misc3, misc_v_3, icmpv6_code,
match.key->code);
break;
default:
NL_SET_ERR_MSG_MOD(extack,
"Code and type matching only with ICMP and ICMPv6");
netdev_err(priv->netdev,
"Code and type matching only with ICMP and ICMPv6\n");
return -EINVAL;
}
if (match.mask->code || match.mask->type) {
*match_level = MLX5_MATCH_L4;
spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_3;
}
}
/* Currently supported only for MPLS over UDP */
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_MPLS) &&
!netif_is_bareudp(filter_dev)) {
NL_SET_ERR_MSG_MOD(extack,
"Matching on MPLS is supported only for MPLS over UDP");
netdev_err(priv->netdev,
"Matching on MPLS is supported only for MPLS over UDP\n");
return -EOPNOTSUPP;
}
return 0;
}
static int parse_cls_flower(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_spec *spec,
struct flow_cls_offload *f,
struct net_device *filter_dev)
{
u8 inner_match_level, outer_match_level, non_tunnel_match_level;
struct netlink_ext_ack *extack = f->common.extack;
struct mlx5_core_dev *dev = priv->mdev;
struct mlx5_eswitch *esw = dev->priv.eswitch;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *rep;
bool is_eswitch_flow;
int err;
inner_match_level = MLX5_MATCH_NONE;
outer_match_level = MLX5_MATCH_NONE;
err = __parse_cls_flower(priv, flow, spec, f, filter_dev,
&inner_match_level, &outer_match_level);
non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
outer_match_level : inner_match_level;
is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
if (!err && is_eswitch_flow) {
rep = rpriv->rep;
if (rep->vport != MLX5_VPORT_UPLINK &&
(esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
esw->offloads.inline_mode < non_tunnel_match_level)) {
NL_SET_ERR_MSG_MOD(extack,
"Flow is not offloaded due to min inline setting");
netdev_warn(priv->netdev,
"Flow is not offloaded due to min inline setting, required %d actual %d\n",
non_tunnel_match_level, esw->offloads.inline_mode);
return -EOPNOTSUPP;
}
}
flow->attr->inner_match_level = inner_match_level;
flow->attr->outer_match_level = outer_match_level;
return err;
}
struct mlx5_fields {
u8 field;
u8 field_bsize;
u32 field_mask;
u32 offset;
u32 match_offset;
};
#define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
{MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
offsetof(struct pedit_headers, field) + (off), \
MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
/* masked values are the same and there are no rewrites that do not have a
* match.
*/
#define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
type matchmaskx = *(type *)(matchmaskp); \
type matchvalx = *(type *)(matchvalp); \
type maskx = *(type *)(maskp); \
type valx = *(type *)(valp); \
\
(valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
matchmaskx)); \
})
static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
void *matchmaskp, u8 bsize)
{
bool same = false;
switch (bsize) {
case 8:
same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
break;
case 16:
same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
break;
case 32:
same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
break;
}
return same;
}
static struct mlx5_fields fields[] = {
OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
OFFLOAD(DMAC_15_0, 16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
OFFLOAD(SMAC_15_0, 16, U16_MAX, eth.h_source[4], 0, smac_15_0),
OFFLOAD(ETHERTYPE, 16, U16_MAX, eth.h_proto, 0, ethertype),
OFFLOAD(FIRST_VID, 16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),
OFFLOAD(IP_DSCP, 8, 0xfc, ip4.tos, 0, ip_dscp),
OFFLOAD(IP_TTL, 8, U8_MAX, ip4.ttl, 0, ttl_hoplimit),
OFFLOAD(SIPV4, 32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
OFFLOAD(DIPV4, 32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
OFFLOAD(SIPV6_95_64, 32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
OFFLOAD(SIPV6_63_32, 32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
OFFLOAD(SIPV6_31_0, 32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
OFFLOAD(DIPV6_95_64, 32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
OFFLOAD(DIPV6_63_32, 32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
OFFLOAD(DIPV6_31_0, 32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
OFFLOAD(IPV6_HOPLIMIT, 8, U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
OFFLOAD(IP_DSCP, 16, 0xc00f, ip6, 0, ip_dscp),
OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source, 0, tcp_sport),
OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest, 0, tcp_dport),
/* in linux iphdr tcp_flags is 8 bits long */
OFFLOAD(TCP_FLAGS, 8, U8_MAX, tcp.ack_seq, 5, tcp_flags),
OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest, 0, udp_dport),
};
static unsigned long mask_to_le(unsigned long mask, int size)
{
__be32 mask_be32;
__be16 mask_be16;
if (size == 32) {
mask_be32 = (__force __be32)(mask);
mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
} else if (size == 16) {
mask_be32 = (__force __be32)(mask);
mask_be16 = *(__be16 *)&mask_be32;
mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
}
return mask;
}
static int offload_pedit_fields(struct mlx5e_priv *priv,
int namespace,
struct mlx5e_tc_flow_parse_attr *parse_attr,
u32 *action_flags,
struct netlink_ext_ack *extack)
{
struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
struct pedit_headers_action *hdrs = parse_attr->hdrs;
void *headers_c, *headers_v, *action, *vals_p;
u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
struct mlx5e_tc_mod_hdr_acts *mod_acts;
unsigned long mask, field_mask;
int i, first, last, next_z;
struct mlx5_fields *f;
u8 cmd;
mod_acts = &parse_attr->mod_hdr_acts;
headers_c = mlx5e_get_match_headers_criteria(*action_flags, &parse_attr->spec);
headers_v = mlx5e_get_match_headers_value(*action_flags, &parse_attr->spec);
set_masks = &hdrs[0].masks;
add_masks = &hdrs[1].masks;
set_vals = &hdrs[0].vals;
add_vals = &hdrs[1].vals;
for (i = 0; i < ARRAY_SIZE(fields); i++) {
bool skip;
f = &fields[i];
/* avoid seeing bits set from previous iterations */
s_mask = 0;
a_mask = 0;
s_masks_p = (void *)set_masks + f->offset;
a_masks_p = (void *)add_masks + f->offset;
s_mask = *s_masks_p & f->field_mask;
a_mask = *a_masks_p & f->field_mask;
if (!s_mask && !a_mask) /* nothing to offload here */
continue;
if (s_mask && a_mask) {
NL_SET_ERR_MSG_MOD(extack,
"can't set and add to the same HW field");
netdev_warn(priv->netdev,
"mlx5: can't set and add to the same HW field (%x)\n",
f->field);
return -EOPNOTSUPP;
}
skip = false;
if (s_mask) {
void *match_mask = headers_c + f->match_offset;
void *match_val = headers_v + f->match_offset;
cmd = MLX5_ACTION_TYPE_SET;
mask = s_mask;
vals_p = (void *)set_vals + f->offset;
/* don't rewrite if we have a match on the same value */
if (cmp_val_mask(vals_p, s_masks_p, match_val,
match_mask, f->field_bsize))
skip = true;
/* clear to denote we consumed this field */
*s_masks_p &= ~f->field_mask;
} else {
cmd = MLX5_ACTION_TYPE_ADD;
mask = a_mask;
vals_p = (void *)add_vals + f->offset;
/* add 0 is no change */
if ((*(u32 *)vals_p & f->field_mask) == 0)
skip = true;
/* clear to denote we consumed this field */
*a_masks_p &= ~f->field_mask;
}
if (skip)
continue;
mask = mask_to_le(mask, f->field_bsize);
first = find_first_bit(&mask, f->field_bsize);
next_z = find_next_zero_bit(&mask, f->field_bsize, first);
last = find_last_bit(&mask, f->field_bsize);
if (first < next_z && next_z < last) {
NL_SET_ERR_MSG_MOD(extack,
"rewrite of few sub-fields isn't supported");
netdev_warn(priv->netdev,
"mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
mask);
return -EOPNOTSUPP;
}
action = mlx5e_mod_hdr_alloc(priv->mdev, namespace, mod_acts);
if (IS_ERR(action)) {
NL_SET_ERR_MSG_MOD(extack,
"too many pedit actions, can't offload");
mlx5_core_warn(priv->mdev,
"mlx5: parsed %d pedit actions, can't do more\n",
mod_acts->num_actions);
return PTR_ERR(action);
}
MLX5_SET(set_action_in, action, action_type, cmd);
MLX5_SET(set_action_in, action, field, f->field);
if (cmd == MLX5_ACTION_TYPE_SET) {
int start;
field_mask = mask_to_le(f->field_mask, f->field_bsize);
/* if field is bit sized it can start not from first bit */
start = find_first_bit(&field_mask, f->field_bsize);
MLX5_SET(set_action_in, action, offset, first - start);
/* length is num of bits to be written, zero means length of 32 */
MLX5_SET(set_action_in, action, length, (last - first + 1));
}
if (f->field_bsize == 32)
MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
else if (f->field_bsize == 16)
MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
else if (f->field_bsize == 8)
MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
++mod_acts->num_actions;
}
return 0;
}
static const struct pedit_headers zero_masks = {};
static int verify_offload_pedit_fields(struct mlx5e_priv *priv,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct netlink_ext_ack *extack)
{
struct pedit_headers *cmd_masks;
u8 cmd;
for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
cmd_masks = &parse_attr->hdrs[cmd].masks;
if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
NL_SET_ERR_MSG_MOD(extack, "attempt to offload an unsupported field");
netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
16, 1, cmd_masks, sizeof(zero_masks), true);
return -EOPNOTSUPP;
}
}
return 0;
}
static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
struct mlx5e_tc_flow_parse_attr *parse_attr,
u32 *action_flags,
struct netlink_ext_ack *extack)
{
int err;
err = offload_pedit_fields(priv, namespace, parse_attr, action_flags, extack);
if (err)
goto out_dealloc_parsed_actions;
err = verify_offload_pedit_fields(priv, parse_attr, extack);
if (err)
goto out_dealloc_parsed_actions;
return 0;
out_dealloc_parsed_actions:
mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
return err;
}
struct ip_ttl_word {
__u8 ttl;
__u8 protocol;
__sum16 check;
};
struct ipv6_hoplimit_word {
__be16 payload_len;
__u8 nexthdr;
__u8 hop_limit;
};
static bool
is_flow_action_modify_ip_header(struct flow_action *flow_action)
{
const struct flow_action_entry *act;
u32 mask, offset;
u8 htype;
int i;
/* For IPv4 & IPv6 header check 4 byte word,
* to determine that modified fields
* are NOT ttl & hop_limit only.
*/
flow_action_for_each(i, act, flow_action) {
if (act->id != FLOW_ACTION_MANGLE &&
act->id != FLOW_ACTION_ADD)
continue;
htype = act->mangle.htype;
offset = act->mangle.offset;
mask = ~act->mangle.mask;
if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
struct ip_ttl_word *ttl_word =
(struct ip_ttl_word *)&mask;
if (offset != offsetof(struct iphdr, ttl) ||
ttl_word->protocol ||
ttl_word->check)
return true;
} else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
struct ipv6_hoplimit_word *hoplimit_word =
(struct ipv6_hoplimit_word *)&mask;
if (offset != offsetof(struct ipv6hdr, payload_len) ||
hoplimit_word->payload_len ||
hoplimit_word->nexthdr)
return true;
}
}
return false;
}
static bool modify_header_match_supported(struct mlx5e_priv *priv,
struct mlx5_flow_spec *spec,
struct flow_action *flow_action,
u32 actions,
struct netlink_ext_ack *extack)
{
bool modify_ip_header;
void *headers_c;
void *headers_v;
u16 ethertype;
u8 ip_proto;
headers_c = mlx5e_get_match_headers_criteria(actions, spec);
headers_v = mlx5e_get_match_headers_value(actions, spec);
ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
/* for non-IP we only re-write MACs, so we're okay */
if (MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_version) == 0 &&
ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
goto out_ok;
modify_ip_header = is_flow_action_modify_ip_header(flow_action);
ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
if (modify_ip_header && ip_proto != IPPROTO_TCP &&
ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
NL_SET_ERR_MSG_MOD(extack,
"can't offload re-write of non TCP/UDP");
netdev_info(priv->netdev, "can't offload re-write of ip proto %d\n",
ip_proto);
return false;
}
out_ok:
return true;
}
static bool
actions_match_supported_fdb(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr;
if (esw_attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
NL_SET_ERR_MSG_MOD(extack,
"current firmware doesn't support split rule for port mirroring");
netdev_warn_once(priv->netdev,
"current firmware doesn't support split rule for port mirroring\n");
return false;
}
return true;
}
static bool
actions_match_supported(struct mlx5e_priv *priv,
struct flow_action *flow_action,
u32 actions,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR &&
!modify_header_match_supported(priv, &parse_attr->spec, flow_action, actions,
extack))
return false;
if (mlx5e_is_eswitch_flow(flow) &&
!actions_match_supported_fdb(priv, flow, extack))
return false;
return true;
}
static bool same_port_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
{
return priv->mdev == peer_priv->mdev;
}
bool mlx5e_same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
{
struct mlx5_core_dev *fmdev, *pmdev;
u64 fsystem_guid, psystem_guid;
fmdev = priv->mdev;
pmdev = peer_priv->mdev;
fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
return (fsystem_guid == psystem_guid);
}
static int
actions_prepare_mod_hdr_actions(struct mlx5e_priv *priv,
struct mlx5e_tc_flow *flow,
struct mlx5_flow_attr *attr,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
struct pedit_headers_action *hdrs = parse_attr->hdrs;
enum mlx5_flow_namespace_type ns_type;
int err;
if (!hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits &&
!hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits)
return 0;
ns_type = mlx5e_get_flow_namespace(flow);
err = alloc_tc_pedit_action(priv, ns_type, parse_attr, &attr->action, extack);
if (err)
return err;
if (parse_attr->mod_hdr_acts.num_actions > 0)
return 0;
/* In case all pedit actions are skipped, remove the MOD_HDR flag. */
attr->action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
if (ns_type != MLX5_FLOW_NAMESPACE_FDB)
return 0;
if (!((attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
(attr->action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
attr->esw_attr->split_count = 0;
return 0;
}
static struct mlx5_flow_attr*
mlx5e_clone_flow_attr_for_post_act(struct mlx5_flow_attr *attr,
enum mlx5_flow_namespace_type ns_type)
{
struct mlx5e_tc_flow_parse_attr *parse_attr;
u32 attr_sz = ns_to_attr_sz(ns_type);
struct mlx5_flow_attr *attr2;
attr2 = mlx5_alloc_flow_attr(ns_type);
parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
if (!attr2 || !parse_attr) {
kvfree(parse_attr);
kfree(attr2);
return NULL;
}
memcpy(attr2, attr, attr_sz);
INIT_LIST_HEAD(&attr2->list);
parse_attr->filter_dev = attr->parse_attr->filter_dev;
attr2->action = 0;
attr2->counter = NULL;
attr2->tc_act_cookies_count = 0;
attr2->flags = 0;
attr2->parse_attr = parse_attr;
attr2->dest_chain = 0;
attr2->dest_ft = NULL;
attr2->act_id_restore_rule = NULL;
memset(&attr2->ct_attr, 0, sizeof(attr2->ct_attr));
if (ns_type == MLX5_FLOW_NAMESPACE_FDB) {
attr2->esw_attr->out_count = 0;
attr2->esw_attr->split_count = 0;
}
attr2->branch_true = NULL;
attr2->branch_false = NULL;
attr2->jumping_attr = NULL;
return attr2;
}
struct mlx5_flow_attr *
mlx5e_tc_get_encap_attr(struct mlx5e_tc_flow *flow)
{
struct mlx5_esw_flow_attr *esw_attr;
struct mlx5_flow_attr *attr;
int i;
list_for_each_entry(attr, &flow->attrs, list) {
esw_attr = attr->esw_attr;
for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
if (esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP)
return attr;
}
}
return NULL;
}
void
mlx5e_tc_unoffload_flow_post_acts(struct mlx5e_tc_flow *flow)
{
struct mlx5e_post_act *post_act = get_post_action(flow->priv);
struct mlx5_flow_attr *attr;
list_for_each_entry(attr, &flow->attrs, list) {
if (list_is_last(&attr->list, &flow->attrs))
break;
mlx5e_tc_post_act_unoffload(post_act, attr->post_act_handle);
}
}
static void
free_flow_post_acts(struct mlx5e_tc_flow *flow)
{
struct mlx5_flow_attr *attr, *tmp;
list_for_each_entry_safe(attr, tmp, &flow->attrs, list) {
if (list_is_last(&attr->list, &flow->attrs))
break;
mlx5_free_flow_attr_actions(flow, attr);
list_del(&attr->list);
kvfree(attr->parse_attr);
kfree(attr);
}
}
int
mlx5e_tc_offload_flow_post_acts(struct mlx5e_tc_flow *flow)
{
struct mlx5e_post_act *post_act = get_post_action(flow->priv);
struct mlx5_flow_attr *attr;
int err = 0;
list_for_each_entry(attr, &flow->attrs, list) {
if (list_is_last(&attr->list, &flow->attrs))
break;
err = mlx5e_tc_post_act_offload(post_act, attr->post_act_handle);
if (err)
break;
}
return err;
}
/* TC filter rule HW translation:
*
* +---------------------+
* + ft prio (tc chain) +
* + original match +
* +---------------------+
* |
* | if multi table action
* |
* v
* +---------------------+
* + post act ft |<----.
* + match fte id | | split on multi table action
* + do actions |-----'
* +---------------------+
* |
* |
* v
* Do rest of the actions after last multi table action.
*/
static int
alloc_flow_post_acts(struct mlx5e_tc_flow *flow, struct netlink_ext_ack *extack)
{
struct mlx5e_post_act *post_act = get_post_action(flow->priv);
struct mlx5_flow_attr *attr, *next_attr = NULL;
struct mlx5e_post_act_handle *handle;
int err;
/* This is going in reverse order as needed.
* The first entry is the last attribute.
*/
list_for_each_entry(attr, &flow->attrs, list) {
if (!next_attr) {
/* Set counter action on last post act rule. */
attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
}
if (next_attr && !(attr->flags & MLX5_ATTR_FLAG_TERMINATING)) {
err = mlx5e_tc_act_set_next_post_act(flow, attr, next_attr);
if (err)
goto out_free;
}
/* Don't add post_act rule for first attr (last in the list).
* It's being handled by the caller.
*/
if (list_is_last(&attr->list, &flow->attrs))
break;
err = actions_prepare_mod_hdr_actions(flow->priv, flow, attr, extack);
if (err)
goto out_free;
err = post_process_attr(flow, attr, extack);
if (err)
goto out_free;
handle = mlx5e_tc_post_act_add(post_act, attr);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
goto out_free;
}
attr->post_act_handle = handle;
if (attr->jumping_attr) {
err = mlx5e_tc_act_set_next_post_act(flow, attr->jumping_attr, attr);
if (err)
goto out_free;
}
next_attr = attr;
}
if (flow_flag_test(flow, SLOW))
goto out;
err = mlx5e_tc_offload_flow_post_acts(flow);
if (err)
goto out_free;
out:
return 0;
out_free:
free_flow_post_acts(flow);
return err;
}
static int
alloc_branch_attr(struct mlx5e_tc_flow *flow,
struct mlx5e_tc_act_branch_ctrl *cond,
struct mlx5_flow_attr **cond_attr,
u32 *jump_count,
struct netlink_ext_ack *extack)
{
struct mlx5_flow_attr *attr;
int err = 0;
*cond_attr = mlx5e_clone_flow_attr_for_post_act(flow->attr,
mlx5e_get_flow_namespace(flow));
if (!(*cond_attr))
return -ENOMEM;
attr = *cond_attr;
switch (cond->act_id) {
case FLOW_ACTION_DROP:
attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
break;
case FLOW_ACTION_ACCEPT:
case FLOW_ACTION_PIPE:
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
break;
case FLOW_ACTION_JUMP:
if (*jump_count) {
NL_SET_ERR_MSG_MOD(extack, "Cannot offload flows with nested jumps");
err = -EOPNOTSUPP;
goto out_err;
}
*jump_count = cond->extval;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
attr->dest_ft = mlx5e_tc_post_act_get_ft(get_post_action(flow->priv));
break;
default:
err = -EOPNOTSUPP;
goto out_err;
}
return err;
out_err:
kfree(*cond_attr);
*cond_attr = NULL;
return err;
}
static void
dec_jump_count(struct flow_action_entry *act, struct mlx5e_tc_act *tc_act,
struct mlx5_flow_attr *attr, struct mlx5e_priv *priv,
struct mlx5e_tc_jump_state *jump_state)
{
if (!jump_state->jump_count)
return;
/* Single tc action can instantiate multiple offload actions (e.g. pedit)
* Jump only over a tc action
*/
if (act->id == jump_state->last_id && act->hw_index == jump_state->last_index)
return;
jump_state->last_id = act->id;
jump_state->last_index = act->hw_index;
/* nothing to do for intermediate actions */
if (--jump_state->jump_count > 1)
return;
if (jump_state->jump_count == 1) { /* last action in the jump action list */
/* create a new attribute after this action */
jump_state->jump_target = true;
if (tc_act->is_terminating_action) { /* the branch ends here */
attr->flags |= MLX5_ATTR_FLAG_TERMINATING;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
} else { /* the branch continues executing the rest of the actions */
struct mlx5e_post_act *post_act;
attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
post_act = get_post_action(priv);
attr->dest_ft = mlx5e_tc_post_act_get_ft(post_act);
}
} else if (jump_state->jump_count == 0) { /* first attr after the jump action list */
/* This is the post action for the jumping attribute (either red or green)
* Use the stored jumping_attr to set the post act id on the jumping attribute
*/
attr->jumping_attr = jump_state->jumping_attr;
}
}
static int
parse_branch_ctrl(struct flow_action_entry *act, struct mlx5e_tc_act *tc_act,
struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr,
struct mlx5e_tc_jump_state *jump_state,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_act_branch_ctrl cond_true, cond_false;
u32 jump_count = jump_state->jump_count;
int err;
if (!tc_act->get_branch_ctrl)
return 0;
tc_act->get_branch_ctrl(act, &cond_true, &cond_false);
err = alloc_branch_attr(flow, &cond_true,
&attr->branch_true, &jump_count, extack);
if (err)
goto out_err;
if (jump_count)
jump_state->jumping_attr = attr->branch_true;
err = alloc_branch_attr(flow, &cond_false,
&attr->branch_false, &jump_count, extack);
if (err)
goto err_branch_false;
if (jump_count && !jump_state->jumping_attr)
jump_state->jumping_attr = attr->branch_false;
jump_state->jump_count = jump_count;
/* branching action requires its own counter */
attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
flow_flag_set(flow, USE_ACT_STATS);
return 0;
err_branch_false:
free_branch_attr(flow, attr->branch_true);
out_err:
return err;
}
static int
parse_tc_actions(struct mlx5e_tc_act_parse_state *parse_state,
struct flow_action *flow_action)
{
struct netlink_ext_ack *extack = parse_state->extack;
struct mlx5e_tc_flow *flow = parse_state->flow;
struct mlx5e_tc_jump_state jump_state = {};
struct mlx5_flow_attr *attr = flow->attr;
enum mlx5_flow_namespace_type ns_type;
struct mlx5e_priv *priv = flow->priv;
struct mlx5_flow_attr *prev_attr;
struct flow_action_entry *act;
struct mlx5e_tc_act *tc_act;
int err, i, i_split = 0;
bool is_missable;
ns_type = mlx5e_get_flow_namespace(flow);
list_add(&attr->list, &flow->attrs);
flow_action_for_each(i, act, flow_action) {
jump_state.jump_target = false;
is_missable = false;
prev_attr = attr;
tc_act = mlx5e_tc_act_get(act->id, ns_type);
if (!tc_act) {
NL_SET_ERR_MSG_MOD(extack, "Not implemented offload action");
err = -EOPNOTSUPP;
goto out_free_post_acts;
}
if (tc_act->can_offload && !tc_act->can_offload(parse_state, act, i, attr)) {
err = -EOPNOTSUPP;
goto out_free_post_acts;
}
err = tc_act->parse_action(parse_state, act, priv, attr);
if (err)
goto out_free_post_acts;
dec_jump_count(act, tc_act, attr, priv, &jump_state);
err = parse_branch_ctrl(act, tc_act, flow, attr, &jump_state, extack);
if (err)
goto out_free_post_acts;
parse_state->actions |= attr->action;
/* Split attr for multi table act if not the last act. */
if (jump_state.jump_target ||
(tc_act->is_multi_table_act &&
tc_act->is_multi_table_act(priv, act, attr) &&
i < flow_action->num_entries - 1)) {
is_missable = tc_act->is_missable ? tc_act->is_missable(act) : false;
err = mlx5e_tc_act_post_parse(parse_state, flow_action, i_split, i, attr,
ns_type);
if (err)
goto out_free_post_acts;
attr = mlx5e_clone_flow_attr_for_post_act(flow->attr, ns_type);
if (!attr) {
err = -ENOMEM;
goto out_free_post_acts;
}
i_split = i + 1;
parse_state->if_count = 0;
list_add(&attr->list, &flow->attrs);
}
if (is_missable) {
/* Add counter to prev, and assign act to new (next) attr */
prev_attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
flow_flag_set(flow, USE_ACT_STATS);
attr->tc_act_cookies[attr->tc_act_cookies_count++] = act->cookie;
} else if (!tc_act->stats_action) {
prev_attr->tc_act_cookies[prev_attr->tc_act_cookies_count++] = act->cookie;
}
}
err = mlx5e_tc_act_post_parse(parse_state, flow_action, i_split, i, attr, ns_type);
if (err)
goto out_free_post_acts;
err = alloc_flow_post_acts(flow, extack);
if (err)
goto out_free_post_acts;
return 0;
out_free_post_acts:
free_flow_post_acts(flow);
return err;
}
static int
flow_action_supported(struct flow_action *flow_action,
struct netlink_ext_ack *extack)
{
if (!flow_action_has_entries(flow_action)) {
NL_SET_ERR_MSG_MOD(extack, "Flow action doesn't have any entries");
return -EINVAL;
}
if (!flow_action_hw_stats_check(flow_action, extack,
FLOW_ACTION_HW_STATS_DELAYED_BIT)) {
NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported");
return -EOPNOTSUPP;
}
return 0;
}
static int
parse_tc_nic_actions(struct mlx5e_priv *priv,
struct flow_action *flow_action,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_act_parse_state *parse_state;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr = flow->attr;
int err;
err = flow_action_supported(flow_action, extack);
if (err)
return err;
attr->nic_attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
parse_attr = attr->parse_attr;
parse_state = &parse_attr->parse_state;
mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack);
parse_state->ct_priv = get_ct_priv(priv);
err = parse_tc_actions(parse_state, flow_action);
if (err)
return err;
err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack);
if (err)
return err;
err = verify_attr_actions(attr->action, extack);
if (err)
return err;
if (!actions_match_supported(priv, flow_action, parse_state->actions,
parse_attr, flow, extack))
return -EOPNOTSUPP;
return 0;
}
static bool is_merged_eswitch_vfs(struct mlx5e_priv *priv,
struct net_device *peer_netdev)
{
struct mlx5e_priv *peer_priv;
peer_priv = netdev_priv(peer_netdev);
return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
mlx5e_eswitch_vf_rep(priv->netdev) &&
mlx5e_eswitch_vf_rep(peer_netdev) &&
mlx5e_same_hw_devs(priv, peer_priv));
}
static bool same_hw_reps(struct mlx5e_priv *priv,
struct net_device *peer_netdev)
{
struct mlx5e_priv *peer_priv;
peer_priv = netdev_priv(peer_netdev);
return mlx5e_eswitch_rep(priv->netdev) &&
mlx5e_eswitch_rep(peer_netdev) &&
mlx5e_same_hw_devs(priv, peer_priv);
}
static bool is_lag_dev(struct mlx5e_priv *priv,
struct net_device *peer_netdev)
{
return ((mlx5_lag_is_sriov(priv->mdev) ||
mlx5_lag_is_multipath(priv->mdev)) &&
same_hw_reps(priv, peer_netdev));
}
static bool is_multiport_eligible(struct mlx5e_priv *priv, struct net_device *out_dev)
{
return same_hw_reps(priv, out_dev) && mlx5_lag_is_mpesw(priv->mdev);
}
bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
struct net_device *out_dev)
{
if (is_merged_eswitch_vfs(priv, out_dev))
return true;
if (is_multiport_eligible(priv, out_dev))
return true;
if (is_lag_dev(priv, out_dev))
return true;
return mlx5e_eswitch_rep(out_dev) &&
same_port_devs(priv, netdev_priv(out_dev));
}
int mlx5e_set_fwd_to_int_port_actions(struct mlx5e_priv *priv,
struct mlx5_flow_attr *attr,
int ifindex,
enum mlx5e_tc_int_port_type type,
u32 *action,
int out_index)
{
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
struct mlx5e_tc_int_port_priv *int_port_priv;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5e_tc_int_port *dest_int_port;
int err;
parse_attr = attr->parse_attr;
int_port_priv = mlx5e_get_int_port_priv(priv);
dest_int_port = mlx5e_tc_int_port_get(int_port_priv, ifindex, type);
if (IS_ERR(dest_int_port))
return PTR_ERR(dest_int_port);
err = mlx5e_tc_match_to_reg_set(priv->mdev, &parse_attr->mod_hdr_acts,
MLX5_FLOW_NAMESPACE_FDB, VPORT_TO_REG,
mlx5e_tc_int_port_get_metadata(dest_int_port));
if (err) {
mlx5e_tc_int_port_put(int_port_priv, dest_int_port);
return err;
}
*action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
esw_attr->dest_int_port = dest_int_port;
esw_attr->dests[out_index].flags |= MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE;
esw_attr->split_count = out_index;
/* Forward to root fdb for matching against the new source vport */
attr->dest_chain = 0;
return 0;
}
static int
parse_tc_fdb_actions(struct mlx5e_priv *priv,
struct flow_action *flow_action,
struct mlx5e_tc_flow *flow,
struct netlink_ext_ack *extack)
{
struct mlx5e_tc_act_parse_state *parse_state;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr = flow->attr;
struct mlx5_esw_flow_attr *esw_attr;
struct net_device *filter_dev;
int err;
err = flow_action_supported(flow_action, extack);
if (err)
return err;
esw_attr = attr->esw_attr;
parse_attr = attr->parse_attr;
filter_dev = parse_attr->filter_dev;
parse_state = &parse_attr->parse_state;
mlx5e_tc_act_init_parse_state(parse_state, flow, flow_action, extack);
parse_state->ct_priv = get_ct_priv(priv);
err = parse_tc_actions(parse_state, flow_action);
if (err)
return err;
/* Forward to/from internal port can only have 1 dest */
if ((netif_is_ovs_master(filter_dev) || esw_attr->dest_int_port) &&
esw_attr->out_count > 1) {
NL_SET_ERR_MSG_MOD(extack,
"Rules with internal port can have only one destination");
return -EOPNOTSUPP;
}
/* Forward from tunnel/internal port to internal port is not supported */
if ((mlx5e_get_tc_tun(filter_dev) || netif_is_ovs_master(filter_dev)) &&
esw_attr->dest_int_port) {
NL_SET_ERR_MSG_MOD(extack,
"Forwarding from tunnel/internal port to internal port is not supported");
return -EOPNOTSUPP;
}
err = actions_prepare_mod_hdr_actions(priv, flow, attr, extack);
if (err)
return err;
if (!actions_match_supported(priv, flow_action, parse_state->actions,
parse_attr, flow, extack))
return -EOPNOTSUPP;
return 0;
}
static void get_flags(int flags, unsigned long *flow_flags)
{
unsigned long __flow_flags = 0;
if (flags & MLX5_TC_FLAG(INGRESS))
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS);
if (flags & MLX5_TC_FLAG(EGRESS))
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS);
if (flags & MLX5_TC_FLAG(ESW_OFFLOAD))
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
if (flags & MLX5_TC_FLAG(NIC_OFFLOAD))
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
if (flags & MLX5_TC_FLAG(FT_OFFLOAD))
__flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_FT);
*flow_flags = __flow_flags;
}
static const struct rhashtable_params tc_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,
};
static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv,
unsigned long flags)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5e_rep_priv *rpriv;
if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) {
rpriv = priv->ppriv;
return &rpriv->tc_ht;
} else /* NIC offload */
return &tc->ht;
}
static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
{
struct mlx5_esw_flow_attr *esw_attr = flow->attr->esw_attr;
struct mlx5_flow_attr *attr = flow->attr;
bool is_rep_ingress = esw_attr->in_rep->vport != MLX5_VPORT_UPLINK &&
flow_flag_test(flow, INGRESS);
bool act_is_encap = !!(attr->action &
MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
bool esw_paired = mlx5_devcom_comp_is_ready(esw_attr->in_mdev->priv.devcom,
MLX5_DEVCOM_ESW_OFFLOADS);
if (!esw_paired)
return false;
if ((mlx5_lag_is_sriov(esw_attr->in_mdev) ||
mlx5_lag_is_multipath(esw_attr->in_mdev)) &&
(is_rep_ingress || act_is_encap))
return true;
if (mlx5_lag_is_mpesw(esw_attr->in_mdev))
return true;
return false;
}
struct mlx5_flow_attr *
mlx5_alloc_flow_attr(enum mlx5_flow_namespace_type type)
{
u32 ex_attr_size = (type == MLX5_FLOW_NAMESPACE_FDB) ?
sizeof(struct mlx5_esw_flow_attr) :
sizeof(struct mlx5_nic_flow_attr);
struct mlx5_flow_attr *attr;
attr = kzalloc(sizeof(*attr) + ex_attr_size, GFP_KERNEL);
if (!attr)
return attr;
INIT_LIST_HEAD(&attr->list);
return attr;
}
static void
mlx5_free_flow_attr_actions(struct mlx5e_tc_flow *flow, struct mlx5_flow_attr *attr)
{
struct mlx5_core_dev *counter_dev = get_flow_counter_dev(flow);
struct mlx5_esw_flow_attr *esw_attr;
if (!attr)
return;
if (attr->post_act_handle)
mlx5e_tc_post_act_del(get_post_action(flow->priv), attr->post_act_handle);
mlx5e_tc_tun_encap_dests_unset(flow->priv, flow, attr);
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
mlx5_fc_destroy(counter_dev, attr->counter);
if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
mlx5e_mod_hdr_dealloc(&attr->parse_attr->mod_hdr_acts);
mlx5e_tc_detach_mod_hdr(flow->priv, flow, attr);
}
if (mlx5e_is_eswitch_flow(flow)) {
esw_attr = attr->esw_attr;
if (esw_attr->int_port)
mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(flow->priv),
esw_attr->int_port);
if (esw_attr->dest_int_port)
mlx5e_tc_int_port_put(mlx5e_get_int_port_priv(flow->priv),
esw_attr->dest_int_port);
}
mlx5_tc_ct_delete_flow(get_ct_priv(flow->priv), attr);
free_branch_attr(flow, attr->branch_true);
free_branch_attr(flow, attr->branch_false);
}
static int
mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
struct flow_cls_offload *f, unsigned long flow_flags,
struct mlx5e_tc_flow_parse_attr **__parse_attr,
struct mlx5e_tc_flow **__flow)
{
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5_flow_attr *attr;
struct mlx5e_tc_flow *flow;
int err = -ENOMEM;
int out_index;
flow = kzalloc(sizeof(*flow), GFP_KERNEL);
parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
if (!parse_attr || !flow)
goto err_free;
flow->flags = flow_flags;
flow->cookie = f->cookie;
flow->priv = priv;
attr = mlx5_alloc_flow_attr(mlx5e_get_flow_namespace(flow));
if (!attr)
goto err_free;
flow->attr = attr;
for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
INIT_LIST_HEAD(&flow->encaps[out_index].list);
INIT_LIST_HEAD(&flow->hairpin);
INIT_LIST_HEAD(&flow->l3_to_l2_reformat);
INIT_LIST_HEAD(&flow->attrs);
INIT_LIST_HEAD(&flow->peer_flows);
refcount_set(&flow->refcnt, 1);
init_completion(&flow->init_done);
init_completion(&flow->del_hw_done);
*__flow = flow;
*__parse_attr = parse_attr;
return 0;
err_free:
kfree(flow);
kvfree(parse_attr);
return err;
}
static void
mlx5e_flow_attr_init(struct mlx5_flow_attr *attr,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct flow_cls_offload *f)
{
attr->parse_attr = parse_attr;
attr->chain = f->common.chain_index;
attr->prio = f->common.prio;
}
static void
mlx5e_flow_esw_attr_init(struct mlx5_flow_attr *attr,
struct mlx5e_priv *priv,
struct mlx5e_tc_flow_parse_attr *parse_attr,
struct flow_cls_offload *f,
struct mlx5_eswitch_rep *in_rep,
struct mlx5_core_dev *in_mdev)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr;
mlx5e_flow_attr_init(attr, parse_attr, f);
esw_attr->in_rep = in_rep;
esw_attr->in_mdev = in_mdev;
if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
MLX5_COUNTER_SOURCE_ESWITCH)
esw_attr->counter_dev = in_mdev;
else
esw_attr->counter_dev = priv->mdev;
}
static struct mlx5e_tc_flow *
__mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
struct flow_cls_offload *f,
unsigned long flow_flags,
struct net_device *filter_dev,
struct mlx5_eswitch_rep *in_rep,
struct mlx5_core_dev *in_mdev)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct netlink_ext_ack *extack = f->common.extack;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5e_tc_flow *flow;
int attr_size, err;
flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
attr_size = sizeof(struct mlx5_esw_flow_attr);
err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
&parse_attr, &flow);
if (err)
goto out;
parse_attr->filter_dev = filter_dev;
mlx5e_flow_esw_attr_init(flow->attr,
priv, parse_attr,
f, in_rep, in_mdev);
err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
f, filter_dev);
if (err)
goto err_free;
/* actions validation depends on parsing the ct matches first */
err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
&flow->attr->ct_attr, extack);
if (err)
goto err_free;
err = parse_tc_fdb_actions(priv, &rule->action, flow, extack);
if (err)
goto err_free;
err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
complete_all(&flow->init_done);
if (err) {
if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
goto err_free;
add_unready_flow(flow);
}
return flow;
err_free:
mlx5e_flow_put(priv, flow);
out:
return ERR_PTR(err);
}
static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
struct mlx5e_tc_flow *flow,
unsigned long flow_flags,
struct mlx5_eswitch *peer_esw)
{
struct mlx5e_priv *priv = flow->priv, *peer_priv;
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_esw_flow_attr *attr = flow->attr->esw_attr;
struct mlx5e_tc_flow_parse_attr *parse_attr;
int i = mlx5_get_dev_index(peer_esw->dev);
struct mlx5e_rep_priv *peer_urpriv;
struct mlx5e_tc_flow *peer_flow;
struct mlx5_core_dev *in_mdev;
int err = 0;
peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
peer_priv = netdev_priv(peer_urpriv->netdev);
/* in_mdev is assigned of which the packet originated from.
* So packets redirected to uplink use the same mdev of the
* original flow and packets redirected from uplink use the
* peer mdev.
* In multiport eswitch it's a special case that we need to
* keep the original mdev.
*/
if (attr->in_rep->vport == MLX5_VPORT_UPLINK && !mlx5_lag_is_mpesw(priv->mdev))
in_mdev = peer_priv->mdev;
else
in_mdev = priv->mdev;
parse_attr = flow->attr->parse_attr;
peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
parse_attr->filter_dev,
attr->in_rep, in_mdev);
if (IS_ERR(peer_flow)) {
err = PTR_ERR(peer_flow);
goto out;
}
list_add_tail(&peer_flow->peer_flows, &flow->peer_flows);
flow_flag_set(flow, DUP);
mutex_lock(&esw->offloads.peer_mutex);
list_add_tail(&flow->peer[i], &esw->offloads.peer_flows[i]);
mutex_unlock(&esw->offloads.peer_mutex);
out:
return err;
}
static int
mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
struct flow_cls_offload *f,
unsigned long flow_flags,
struct net_device *filter_dev,
struct mlx5e_tc_flow **__flow)
{
struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch_rep *in_rep = rpriv->rep;
struct mlx5_core_dev *in_mdev = priv->mdev;
struct mlx5_eswitch *peer_esw;
struct mlx5e_tc_flow *flow;
int err;
int i;
flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
in_mdev);
if (IS_ERR(flow))
return PTR_ERR(flow);
if (!is_peer_flow_needed(flow)) {
*__flow = flow;
return 0;
}
if (!mlx5_devcom_for_each_peer_begin(devcom, MLX5_DEVCOM_ESW_OFFLOADS)) {
err = -ENODEV;
goto clean_flow;
}
mlx5_devcom_for_each_peer_entry(devcom,
MLX5_DEVCOM_ESW_OFFLOADS,
peer_esw, i) {
err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags, peer_esw);
if (err)
goto peer_clean;
}
mlx5_devcom_for_each_peer_end(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
*__flow = flow;
return 0;
peer_clean:
mlx5e_tc_del_fdb_peers_flow(flow);
mlx5_devcom_for_each_peer_end(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
clean_flow:
mlx5e_tc_del_fdb_flow(priv, flow);
return err;
}
static int
mlx5e_add_nic_flow(struct mlx5e_priv *priv,
struct flow_cls_offload *f,
unsigned long flow_flags,
struct net_device *filter_dev,
struct mlx5e_tc_flow **__flow)
{
struct flow_rule *rule = flow_cls_offload_flow_rule(f);
struct netlink_ext_ack *extack = f->common.extack;
struct mlx5e_tc_flow_parse_attr *parse_attr;
struct mlx5e_tc_flow *flow;
int attr_size, err;
if (!MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level)) {
if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
return -EOPNOTSUPP;
} else if (!tc_can_offload_extack(priv->netdev, f->common.extack)) {
return -EOPNOTSUPP;
}
flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
attr_size = sizeof(struct mlx5_nic_flow_attr);
err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
&parse_attr, &flow);
if (err)
goto out;
parse_attr->filter_dev = filter_dev;
mlx5e_flow_attr_init(flow->attr, parse_attr, f);
err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
f, filter_dev);
if (err)
goto err_free;
err = mlx5_tc_ct_match_add(get_ct_priv(priv), &parse_attr->spec, f,
&flow->attr->ct_attr, extack);
if (err)
goto err_free;
err = parse_tc_nic_actions(priv, &rule->action, flow, extack);
if (err)
goto err_free;
err = mlx5e_tc_add_nic_flow(priv, flow, extack);
if (err)
goto err_free;
flow_flag_set(flow, OFFLOADED);
*__flow = flow;
return 0;
err_free:
flow_flag_set(flow, FAILED);
mlx5e_mod_hdr_dealloc(&parse_attr->mod_hdr_acts);
mlx5e_flow_put(priv, flow);
out:
return err;
}
static int
mlx5e_tc_add_flow(struct mlx5e_priv *priv,
struct flow_cls_offload *f,
unsigned long flags,
struct net_device *filter_dev,
struct mlx5e_tc_flow **flow)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
unsigned long flow_flags;
int err;
get_flags(flags, &flow_flags);
if (!tc_can_offload_extack(priv->netdev, f->common.extack))
return -EOPNOTSUPP;
if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
err = mlx5e_add_fdb_flow(priv, f, flow_flags,
filter_dev, flow);
else
err = mlx5e_add_nic_flow(priv, f, flow_flags,
filter_dev, flow);
return err;
}
static bool is_flow_rule_duplicate_allowed(struct net_device *dev,
struct mlx5e_rep_priv *rpriv)
{
/* Offloaded flow rule is allowed to duplicate on non-uplink representor
* sharing tc block with other slaves of a lag device. Rpriv can be NULL if this
* function is called from NIC mode.
*/
return netif_is_lag_port(dev) && rpriv && rpriv->rep->vport != MLX5_VPORT_UPLINK;
}
int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
struct flow_cls_offload *f, unsigned long flags)
{
struct netlink_ext_ack *extack = f->common.extack;
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5e_tc_flow *flow;
int err = 0;
if (!mlx5_esw_hold(priv->mdev))
return -EBUSY;
mlx5_esw_get(priv->mdev);
rcu_read_lock();
flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
if (flow) {
/* Same flow rule offloaded to non-uplink representor sharing tc block,
* just return 0.
*/
if (is_flow_rule_duplicate_allowed(dev, rpriv) && flow->orig_dev != dev)
goto rcu_unlock;
NL_SET_ERR_MSG_MOD(extack,
"flow cookie already exists, ignoring");
netdev_warn_once(priv->netdev,
"flow cookie %lx already exists, ignoring\n",
f->cookie);
err = -EEXIST;
goto rcu_unlock;
}
rcu_unlock:
rcu_read_unlock();
if (flow)
goto out;
trace_mlx5e_configure_flower(f);
err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
if (err)
goto out;
/* Flow rule offloaded to non-uplink representor sharing tc block,
* set the flow's owner dev.
*/
if (is_flow_rule_duplicate_allowed(dev, rpriv))
flow->orig_dev = dev;
err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
if (err)
goto err_free;
mlx5_esw_release(priv->mdev);
return 0;
err_free:
mlx5e_flow_put(priv, flow);
out:
mlx5_esw_put(priv->mdev);
mlx5_esw_release(priv->mdev);
return err;
}
static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
{
bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));
return flow_flag_test(flow, INGRESS) == dir_ingress &&
flow_flag_test(flow, EGRESS) == dir_egress;
}
int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
struct flow_cls_offload *f, unsigned long flags)
{
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
struct mlx5e_tc_flow *flow;
int err;
rcu_read_lock();
flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
if (!flow || !same_flow_direction(flow, flags)) {
err = -EINVAL;
goto errout;
}
/* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
* set.
*/
if (flow_flag_test_and_set(flow, DELETED)) {
err = -EINVAL;
goto errout;
}
rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
rcu_read_unlock();
trace_mlx5e_delete_flower(f);
mlx5e_flow_put(priv, flow);
mlx5_esw_put(priv->mdev);
return 0;
errout:
rcu_read_unlock();
return err;
}
int mlx5e_tc_fill_action_stats(struct mlx5e_priv *priv,
struct flow_offload_action *fl_act)
{
return mlx5e_tc_act_stats_fill_stats(get_act_stats_handle(priv), fl_act);
}
int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
struct flow_cls_offload *f, unsigned long flags)
{
struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
struct mlx5e_tc_flow *flow;
struct mlx5_fc *counter;
u64 lastuse = 0;
u64 packets = 0;
u64 bytes = 0;
int err = 0;
rcu_read_lock();
flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
tc_ht_params));
rcu_read_unlock();
if (IS_ERR(flow))
return PTR_ERR(flow);
if (!same_flow_direction(flow, flags)) {
err = -EINVAL;
goto errout;
}
if (mlx5e_is_offloaded_flow(flow)) {
if (flow_flag_test(flow, USE_ACT_STATS)) {
f->use_act_stats = true;
} else {
counter = mlx5e_tc_get_counter(flow);
if (!counter)
goto errout;
mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
}
}
/* Under multipath it's possible for one rule to be currently
* un-offloaded while the other rule is offloaded.
*/
if (!mlx5_devcom_for_each_peer_begin(devcom, MLX5_DEVCOM_ESW_OFFLOADS))
goto out;
if (flow_flag_test(flow, DUP)) {
struct mlx5e_tc_flow *peer_flow;
list_for_each_entry(peer_flow, &flow->peer_flows, peer_flows) {
u64 packets2;
u64 lastuse2;
u64 bytes2;
if (!flow_flag_test(peer_flow, OFFLOADED))
continue;
if (flow_flag_test(flow, USE_ACT_STATS)) {
f->use_act_stats = true;
break;
}
counter = mlx5e_tc_get_counter(peer_flow);
if (!counter)
goto no_peer_counter;
mlx5_fc_query_cached(counter, &bytes2, &packets2,
&lastuse2);
bytes += bytes2;
packets += packets2;
lastuse = max_t(u64, lastuse, lastuse2);
}
}
no_peer_counter:
mlx5_devcom_for_each_peer_end(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
out:
flow_stats_update(&f->stats, bytes, packets, 0, lastuse,
FLOW_ACTION_HW_STATS_DELAYED);
trace_mlx5e_stats_flower(f);
errout:
mlx5e_flow_put(priv, flow);
return err;
}
static int apply_police_params(struct mlx5e_priv *priv, u64 rate,
struct netlink_ext_ack *extack)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_eswitch *esw;
u32 rate_mbps = 0;
u16 vport_num;
int err;
vport_num = rpriv->rep->vport;
if (vport_num >= MLX5_VPORT_ECPF) {
NL_SET_ERR_MSG_MOD(extack,
"Ingress rate limit is supported only for Eswitch ports connected to VFs");
return -EOPNOTSUPP;
}
esw = priv->mdev->priv.eswitch;
/* rate is given in bytes/sec.
* First convert to bits/sec and then round to the nearest mbit/secs.
* mbit means million bits.
* Moreover, if rate is non zero we choose to configure to a minimum of
* 1 mbit/sec.
*/
if (rate) {
rate = (rate * BITS_PER_BYTE) + 500000;
do_div(rate, 1000000);
rate_mbps = max_t(u32, rate, 1);
}
err = mlx5_esw_qos_modify_vport_rate(esw, vport_num, rate_mbps);
if (err)
NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");
return err;
}
static int
tc_matchall_police_validate(const struct flow_action *action,
const struct flow_action_entry *act,
struct netlink_ext_ack *extack)
{
if (act->police.notexceed.act_id != FLOW_ACTION_CONTINUE) {
NL_SET_ERR_MSG_MOD(extack,
"Offload not supported when conform action is not continue");
return -EOPNOTSUPP;
}
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_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;
}
return 0;
}
static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
struct flow_action *flow_action,
struct netlink_ext_ack *extack)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
const struct flow_action_entry *act;
int err;
int i;
if (!flow_action_has_entries(flow_action)) {
NL_SET_ERR_MSG_MOD(extack, "matchall called with no action");
return -EINVAL;
}
if (!flow_offload_has_one_action(flow_action)) {
NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action");
return -EOPNOTSUPP;
}
if (!flow_action_basic_hw_stats_check(flow_action, extack)) {
NL_SET_ERR_MSG_MOD(extack, "Flow action HW stats type is not supported");
return -EOPNOTSUPP;
}
flow_action_for_each(i, act, flow_action) {
switch (act->id) {
case FLOW_ACTION_POLICE:
err = tc_matchall_police_validate(flow_action, act, extack);
if (err)
return err;
err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
if (err)
return err;
mlx5e_stats_copy_rep_stats(&rpriv->prev_vf_vport_stats,
&priv->stats.rep_stats);
break;
default:
NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
return -EOPNOTSUPP;
}
}
return 0;
}
int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
struct tc_cls_matchall_offload *ma)
{
struct netlink_ext_ack *extack = ma->common.extack;
if (ma->common.prio != 1) {
NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
return -EINVAL;
}
return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
}
int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
struct tc_cls_matchall_offload *ma)
{
struct netlink_ext_ack *extack = ma->common.extack;
return apply_police_params(priv, 0, extack);
}
void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
struct tc_cls_matchall_offload *ma)
{
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct rtnl_link_stats64 cur_stats;
u64 dbytes;
u64 dpkts;
mlx5e_stats_copy_rep_stats(&cur_stats, &priv->stats.rep_stats);
dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
rpriv->prev_vf_vport_stats = cur_stats;
flow_stats_update(&ma->stats, dbytes, dpkts, 0, jiffies,
FLOW_ACTION_HW_STATS_DELAYED);
}
static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
struct mlx5e_priv *peer_priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
struct mlx5e_hairpin_entry *hpe, *tmp;
LIST_HEAD(init_wait_list);
u16 peer_vhca_id;
int bkt;
if (!mlx5e_same_hw_devs(priv, peer_priv))
return;
peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
mutex_lock(&tc->hairpin_tbl_lock);
hash_for_each(tc->hairpin_tbl, bkt, hpe, hairpin_hlist)
if (refcount_inc_not_zero(&hpe->refcnt))
list_add(&hpe->dead_peer_wait_list, &init_wait_list);
mutex_unlock(&tc->hairpin_tbl_lock);
list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
wait_for_completion(&hpe->res_ready);
if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
mlx5_core_hairpin_clear_dead_peer(hpe->hp->pair);
mlx5e_hairpin_put(priv, hpe);
}
}
static int mlx5e_tc_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
struct mlx5e_priv *peer_priv;
struct mlx5e_tc_table *tc;
struct mlx5e_priv *priv;
if (ndev->netdev_ops != &mlx5e_netdev_ops ||
event != NETDEV_UNREGISTER ||
ndev->reg_state == NETREG_REGISTERED)
return NOTIFY_DONE;
tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
priv = tc->priv;
peer_priv = netdev_priv(ndev);
if (priv == peer_priv ||
!(priv->netdev->features & NETIF_F_HW_TC))
return NOTIFY_DONE;
mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
return NOTIFY_DONE;
}
static int mlx5e_tc_nic_create_miss_table(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_flow_table **ft = &tc->miss_t;
struct mlx5_flow_table_attr ft_attr = {};
struct mlx5_flow_namespace *ns;
int err = 0;
ft_attr.max_fte = 1;
ft_attr.autogroup.max_num_groups = 1;
ft_attr.level = MLX5E_TC_MISS_LEVEL;
ft_attr.prio = 0;
ns = mlx5_get_flow_namespace(priv->mdev, MLX5_FLOW_NAMESPACE_KERNEL);
*ft = mlx5_create_auto_grouped_flow_table(ns, &ft_attr);
if (IS_ERR(*ft)) {
err = PTR_ERR(*ft);
netdev_err(priv->netdev, "failed to create tc nic miss table err=%d\n", err);
}
return err;
}
static void mlx5e_tc_nic_destroy_miss_table(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
mlx5_destroy_flow_table(tc->miss_t);
}
int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
struct mlx5_core_dev *dev = priv->mdev;
struct mapping_ctx *chains_mapping;
struct mlx5_chains_attr attr = {};
u64 mapping_id;
int err;
mlx5e_mod_hdr_tbl_init(&tc->mod_hdr);
mutex_init(&tc->t_lock);
mutex_init(&tc->hairpin_tbl_lock);
hash_init(tc->hairpin_tbl);
tc->priv = priv;
err = rhashtable_init(&tc->ht, &tc_ht_params);
if (err)
return err;
lockdep_set_class(&tc->ht.mutex, &tc_ht_lock_key);
lockdep_init_map(&tc->ht.run_work.lockdep_map, "tc_ht_wq_key", &tc_ht_wq_key, 0);
mapping_id = mlx5_query_nic_system_image_guid(dev);
chains_mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_CHAIN,
sizeof(struct mlx5_mapped_obj),
MLX5E_TC_TABLE_CHAIN_TAG_MASK, true);
if (IS_ERR(chains_mapping)) {
err = PTR_ERR(chains_mapping);
goto err_mapping;
}
tc->mapping = chains_mapping;
err = mlx5e_tc_nic_create_miss_table(priv);
if (err)
goto err_chains;
if (MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, ignore_flow_level))
attr.flags = MLX5_CHAINS_AND_PRIOS_SUPPORTED |
MLX5_CHAINS_IGNORE_FLOW_LEVEL_SUPPORTED;
attr.ns = MLX5_FLOW_NAMESPACE_KERNEL;
attr.max_grp_num = MLX5E_TC_TABLE_NUM_GROUPS;
attr.default_ft = tc->miss_t;
attr.mapping = chains_mapping;
attr.fs_base_prio = MLX5E_TC_PRIO;
tc->chains = mlx5_chains_create(dev, &attr);
if (IS_ERR(tc->chains)) {
err = PTR_ERR(tc->chains);
goto err_miss;
}
mlx5_chains_print_info(tc->chains);
tc->post_act = mlx5e_tc_post_act_init(priv, tc->chains, MLX5_FLOW_NAMESPACE_KERNEL);
tc->ct = mlx5_tc_ct_init(priv, tc->chains, &tc->mod_hdr,
MLX5_FLOW_NAMESPACE_KERNEL, tc->post_act);
tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
err = register_netdevice_notifier_dev_net(priv->netdev,
&tc->netdevice_nb,
&tc->netdevice_nn);
if (err) {
tc->netdevice_nb.notifier_call = NULL;
mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
goto err_reg;
}
mlx5e_tc_debugfs_init(tc, mlx5e_fs_get_debugfs_root(priv->fs));
tc->action_stats_handle = mlx5e_tc_act_stats_create();
if (IS_ERR(tc->action_stats_handle)) {
err = PTR_ERR(tc->action_stats_handle);
goto err_act_stats;
}
return 0;
err_act_stats:
unregister_netdevice_notifier_dev_net(priv->netdev,
&tc->netdevice_nb,
&tc->netdevice_nn);
err_reg:
mlx5_tc_ct_clean(tc->ct);
mlx5e_tc_post_act_destroy(tc->post_act);
mlx5_chains_destroy(tc->chains);
err_miss:
mlx5e_tc_nic_destroy_miss_table(priv);
err_chains:
mapping_destroy(chains_mapping);
err_mapping:
rhashtable_destroy(&tc->ht);
return err;
}
static void _mlx5e_tc_del_flow(void *ptr, void *arg)
{
struct mlx5e_tc_flow *flow = ptr;
struct mlx5e_priv *priv = flow->priv;
mlx5e_tc_del_flow(priv, flow);
kfree(flow);
}
void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc = mlx5e_fs_get_tc(priv->fs);
debugfs_remove_recursive(tc->dfs_root);
if (tc->netdevice_nb.notifier_call)
unregister_netdevice_notifier_dev_net(priv->netdev,
&tc->netdevice_nb,
&tc->netdevice_nn);
mlx5e_mod_hdr_tbl_destroy(&tc->mod_hdr);
mutex_destroy(&tc->hairpin_tbl_lock);
rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL);
if (!IS_ERR_OR_NULL(tc->t)) {
mlx5_chains_put_table(tc->chains, 0, 1, MLX5E_TC_FT_LEVEL);
tc->t = NULL;
}
mutex_destroy(&tc->t_lock);
mlx5_tc_ct_clean(tc->ct);
mlx5e_tc_post_act_destroy(tc->post_act);
mapping_destroy(tc->mapping);
mlx5_chains_destroy(tc->chains);
mlx5e_tc_nic_destroy_miss_table(priv);
mlx5e_tc_act_stats_free(tc->action_stats_handle);
}
int mlx5e_tc_ht_init(struct rhashtable *tc_ht)
{
int err;
err = rhashtable_init(tc_ht, &tc_ht_params);
if (err)
return err;
lockdep_set_class(&tc_ht->mutex, &tc_ht_lock_key);
lockdep_init_map(&tc_ht->run_work.lockdep_map, "tc_ht_wq_key", &tc_ht_wq_key, 0);
return 0;
}
void mlx5e_tc_ht_cleanup(struct rhashtable *tc_ht)
{
rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
}
int mlx5e_tc_esw_init(struct mlx5_rep_uplink_priv *uplink_priv)
{
const size_t sz_enc_opts = sizeof(struct tunnel_match_enc_opts);
struct mlx5e_rep_priv *rpriv;
struct mapping_ctx *mapping;
struct mlx5_eswitch *esw;
struct mlx5e_priv *priv;
u64 mapping_id;
int err = 0;
rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv);
priv = netdev_priv(rpriv->netdev);
esw = priv->mdev->priv.eswitch;
uplink_priv->post_act = mlx5e_tc_post_act_init(priv, esw_chains(esw),
MLX5_FLOW_NAMESPACE_FDB);
uplink_priv->ct_priv = mlx5_tc_ct_init(netdev_priv(priv->netdev),
esw_chains(esw),
&esw->offloads.mod_hdr,
MLX5_FLOW_NAMESPACE_FDB,
uplink_priv->post_act);
uplink_priv->int_port_priv = mlx5e_tc_int_port_init(netdev_priv(priv->netdev));
uplink_priv->tc_psample = mlx5e_tc_sample_init(esw, uplink_priv->post_act);
mapping_id = mlx5_query_nic_system_image_guid(esw->dev);
mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL,
sizeof(struct tunnel_match_key),
TUNNEL_INFO_BITS_MASK, true);
if (IS_ERR(mapping)) {
err = PTR_ERR(mapping);
goto err_tun_mapping;
}
uplink_priv->tunnel_mapping = mapping;
/* Two last values are reserved for stack devices slow path table mark
* and bridge ingress push mark.
*/
mapping = mapping_create_for_id(mapping_id, MAPPING_TYPE_TUNNEL_ENC_OPTS,
sz_enc_opts, ENC_OPTS_BITS_MASK - 2, true);
if (IS_ERR(mapping)) {
err = PTR_ERR(mapping);
goto err_enc_opts_mapping;
}
uplink_priv->tunnel_enc_opts_mapping = mapping;
uplink_priv->encap = mlx5e_tc_tun_init(priv);
if (IS_ERR(uplink_priv->encap)) {
err = PTR_ERR(uplink_priv->encap);
goto err_register_fib_notifier;
}
uplink_priv->action_stats_handle = mlx5e_tc_act_stats_create();
if (IS_ERR(uplink_priv->action_stats_handle)) {
err = PTR_ERR(uplink_priv->action_stats_handle);
goto err_action_counter;
}
mlx5_esw_offloads_devcom_init(esw);
return 0;
err_action_counter:
mlx5e_tc_tun_cleanup(uplink_priv->encap);
err_register_fib_notifier:
mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
err_enc_opts_mapping:
mapping_destroy(uplink_priv->tunnel_mapping);
err_tun_mapping:
mlx5e_tc_sample_cleanup(uplink_priv->tc_psample);
mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv);
mlx5_tc_ct_clean(uplink_priv->ct_priv);
netdev_warn(priv->netdev,
"Failed to initialize tc (eswitch), err: %d", err);
mlx5e_tc_post_act_destroy(uplink_priv->post_act);
return err;
}
void mlx5e_tc_esw_cleanup(struct mlx5_rep_uplink_priv *uplink_priv)
{
struct mlx5e_rep_priv *rpriv;
struct mlx5_eswitch *esw;
struct mlx5e_priv *priv;
rpriv = container_of(uplink_priv, struct mlx5e_rep_priv, uplink_priv);
priv = netdev_priv(rpriv->netdev);
esw = priv->mdev->priv.eswitch;
mlx5_esw_offloads_devcom_cleanup(esw);
mlx5e_tc_tun_cleanup(uplink_priv->encap);
mapping_destroy(uplink_priv->tunnel_enc_opts_mapping);
mapping_destroy(uplink_priv->tunnel_mapping);
mlx5e_tc_sample_cleanup(uplink_priv->tc_psample);
mlx5e_tc_int_port_cleanup(uplink_priv->int_port_priv);
mlx5_tc_ct_clean(uplink_priv->ct_priv);
mlx5e_flow_meters_cleanup(uplink_priv->flow_meters);
mlx5e_tc_post_act_destroy(uplink_priv->post_act);
mlx5e_tc_act_stats_free(uplink_priv->action_stats_handle);
}
int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags)
{
struct rhashtable *tc_ht = get_tc_ht(priv, flags);
return atomic_read(&tc_ht->nelems);
}
void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
{
struct mlx5e_tc_flow *flow, *tmp;
int i;
for (i = 0; i < MLX5_MAX_PORTS; i++) {
if (i == mlx5_get_dev_index(esw->dev))
continue;
list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows[i], peer[i])
mlx5e_tc_del_fdb_peers_flow(flow);
}
}
void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
{
struct mlx5_rep_uplink_priv *rpriv =
container_of(work, struct mlx5_rep_uplink_priv,
reoffload_flows_work);
struct mlx5e_tc_flow *flow, *tmp;
mutex_lock(&rpriv->unready_flows_lock);
list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
unready_flow_del(flow);
}
mutex_unlock(&rpriv->unready_flows_lock);
}
static int mlx5e_setup_tc_cls_flower(struct mlx5e_priv *priv,
struct flow_cls_offload *cls_flower,
unsigned long flags)
{
switch (cls_flower->command) {
case FLOW_CLS_REPLACE:
return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
flags);
case FLOW_CLS_DESTROY:
return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
flags);
case FLOW_CLS_STATS:
return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
flags);
default:
return -EOPNOTSUPP;
}
}
int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
void *cb_priv)
{
unsigned long flags = MLX5_TC_FLAG(INGRESS);
struct mlx5e_priv *priv = cb_priv;
if (!priv->netdev || !netif_device_present(priv->netdev))
return -EOPNOTSUPP;
if (mlx5e_is_uplink_rep(priv))
flags |= MLX5_TC_FLAG(ESW_OFFLOAD);
else
flags |= MLX5_TC_FLAG(NIC_OFFLOAD);
switch (type) {
case TC_SETUP_CLSFLOWER:
return mlx5e_setup_tc_cls_flower(priv, type_data, flags);
default:
return -EOPNOTSUPP;
}
}
static bool mlx5e_tc_restore_tunnel(struct mlx5e_priv *priv, struct sk_buff *skb,
struct mlx5e_tc_update_priv *tc_priv,
u32 tunnel_id)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct tunnel_match_enc_opts enc_opts = {};
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
struct metadata_dst *tun_dst;
struct tunnel_match_key key;
u32 tun_id, enc_opts_id;
struct net_device *dev;
int err;
enc_opts_id = tunnel_id & ENC_OPTS_BITS_MASK;
tun_id = tunnel_id >> ENC_OPTS_BITS;
if (!tun_id)
return true;
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
err = mapping_find(uplink_priv->tunnel_mapping, tun_id, &key);
if (err) {
netdev_dbg(priv->netdev,
"Couldn't find tunnel for tun_id: %d, err: %d\n",
tun_id, err);
return false;
}
if (enc_opts_id) {
err = mapping_find(uplink_priv->tunnel_enc_opts_mapping,
enc_opts_id, &enc_opts);
if (err) {
netdev_dbg(priv->netdev,
"Couldn't find tunnel (opts) for tun_id: %d, err: %d\n",
enc_opts_id, err);
return false;
}
}
switch (key.enc_control.addr_type) {
case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
tun_dst = __ip_tun_set_dst(key.enc_ipv4.src, key.enc_ipv4.dst,
key.enc_ip.tos, key.enc_ip.ttl,
key.enc_tp.dst, TUNNEL_KEY,
key32_to_tunnel_id(key.enc_key_id.keyid),
enc_opts.key.len);
break;
case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
tun_dst = __ipv6_tun_set_dst(&key.enc_ipv6.src, &key.enc_ipv6.dst,
key.enc_ip.tos, key.enc_ip.ttl,
key.enc_tp.dst, 0, TUNNEL_KEY,
key32_to_tunnel_id(key.enc_key_id.keyid),
enc_opts.key.len);
break;
default:
netdev_dbg(priv->netdev,
"Couldn't restore tunnel, unsupported addr_type: %d\n",
key.enc_control.addr_type);
return false;
}
if (!tun_dst) {
netdev_dbg(priv->netdev, "Couldn't restore tunnel, no tun_dst\n");
return false;
}
tun_dst->u.tun_info.key.tp_src = key.enc_tp.src;
if (enc_opts.key.len)
ip_tunnel_info_opts_set(&tun_dst->u.tun_info,
enc_opts.key.data,
enc_opts.key.len,
enc_opts.key.dst_opt_type);
skb_dst_set(skb, (struct dst_entry *)tun_dst);
dev = dev_get_by_index(&init_net, key.filter_ifindex);
if (!dev) {
netdev_dbg(priv->netdev,
"Couldn't find tunnel device with ifindex: %d\n",
key.filter_ifindex);
return false;
}
/* Set fwd_dev so we do dev_put() after datapath */
tc_priv->fwd_dev = dev;
skb->dev = dev;
return true;
}
static bool mlx5e_tc_restore_skb_tc_meta(struct sk_buff *skb, struct mlx5_tc_ct_priv *ct_priv,
struct mlx5_mapped_obj *mapped_obj, u32 zone_restore_id,
u32 tunnel_id, struct mlx5e_tc_update_priv *tc_priv)
{
struct mlx5e_priv *priv = netdev_priv(skb->dev);
struct tc_skb_ext *tc_skb_ext;
u64 act_miss_cookie;
u32 chain;
chain = mapped_obj->type == MLX5_MAPPED_OBJ_CHAIN ? mapped_obj->chain : 0;
act_miss_cookie = mapped_obj->type == MLX5_MAPPED_OBJ_ACT_MISS ?
mapped_obj->act_miss_cookie : 0;
if (chain || act_miss_cookie) {
if (!mlx5e_tc_ct_restore_flow(ct_priv, skb, zone_restore_id))
return false;
tc_skb_ext = tc_skb_ext_alloc(skb);
if (!tc_skb_ext) {
WARN_ON(1);
return false;
}
if (act_miss_cookie) {
tc_skb_ext->act_miss_cookie = act_miss_cookie;
tc_skb_ext->act_miss = 1;
} else {
tc_skb_ext->chain = chain;
}
}
if (tc_priv)
return mlx5e_tc_restore_tunnel(priv, skb, tc_priv, tunnel_id);
return true;
}
static void mlx5e_tc_restore_skb_sample(struct mlx5e_priv *priv, struct sk_buff *skb,
struct mlx5_mapped_obj *mapped_obj,
struct mlx5e_tc_update_priv *tc_priv)
{
if (!mlx5e_tc_restore_tunnel(priv, skb, tc_priv, mapped_obj->sample.tunnel_id)) {
netdev_dbg(priv->netdev,
"Failed to restore tunnel info for sampled packet\n");
return;
}
mlx5e_tc_sample_skb(skb, mapped_obj);
}
static bool mlx5e_tc_restore_skb_int_port(struct mlx5e_priv *priv, struct sk_buff *skb,
struct mlx5_mapped_obj *mapped_obj,
struct mlx5e_tc_update_priv *tc_priv,
u32 tunnel_id)
{
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_rep_uplink_priv *uplink_priv;
struct mlx5e_rep_priv *uplink_rpriv;
bool forward_tx = false;
/* Tunnel restore takes precedence over int port restore */
if (tunnel_id)
return mlx5e_tc_restore_tunnel(priv, skb, tc_priv, tunnel_id);
uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
uplink_priv = &uplink_rpriv->uplink_priv;
if (mlx5e_tc_int_port_dev_fwd(uplink_priv->int_port_priv, skb,
mapped_obj->int_port_metadata, &forward_tx)) {
/* Set fwd_dev for future dev_put */
tc_priv->fwd_dev = skb->dev;
tc_priv->forward_tx = forward_tx;
return true;
}
return false;
}
bool mlx5e_tc_update_skb(struct mlx5_cqe64 *cqe, struct sk_buff *skb,
struct mapping_ctx *mapping_ctx, u32 mapped_obj_id,
struct mlx5_tc_ct_priv *ct_priv,
u32 zone_restore_id, u32 tunnel_id,
struct mlx5e_tc_update_priv *tc_priv)
{
struct mlx5e_priv *priv = netdev_priv(skb->dev);
struct mlx5_mapped_obj mapped_obj;
int err;
err = mapping_find(mapping_ctx, mapped_obj_id, &mapped_obj);
if (err) {
netdev_dbg(skb->dev,
"Couldn't find mapped object for mapped_obj_id: %d, err: %d\n",
mapped_obj_id, err);
return false;
}
switch (mapped_obj.type) {
case MLX5_MAPPED_OBJ_CHAIN:
case MLX5_MAPPED_OBJ_ACT_MISS:
return mlx5e_tc_restore_skb_tc_meta(skb, ct_priv, &mapped_obj, zone_restore_id,
tunnel_id, tc_priv);
case MLX5_MAPPED_OBJ_SAMPLE:
mlx5e_tc_restore_skb_sample(priv, skb, &mapped_obj, tc_priv);
tc_priv->skb_done = true;
return true;
case MLX5_MAPPED_OBJ_INT_PORT_METADATA:
return mlx5e_tc_restore_skb_int_port(priv, skb, &mapped_obj, tc_priv, tunnel_id);
default:
netdev_dbg(priv->netdev, "Invalid mapped object type: %d\n", mapped_obj.type);
return false;
}
return false;
}
bool mlx5e_tc_update_skb_nic(struct mlx5_cqe64 *cqe, struct sk_buff *skb)
{
struct mlx5e_priv *priv = netdev_priv(skb->dev);
u32 mapped_obj_id, reg_b, zone_restore_id;
struct mlx5_tc_ct_priv *ct_priv;
struct mapping_ctx *mapping_ctx;
struct mlx5e_tc_table *tc;
reg_b = be32_to_cpu(cqe->ft_metadata);
tc = mlx5e_fs_get_tc(priv->fs);
mapped_obj_id = reg_b & MLX5E_TC_TABLE_CHAIN_TAG_MASK;
zone_restore_id = (reg_b >> MLX5_REG_MAPPING_MOFFSET(NIC_ZONE_RESTORE_TO_REG)) &
ESW_ZONE_ID_MASK;
ct_priv = tc->ct;
mapping_ctx = tc->mapping;
return mlx5e_tc_update_skb(cqe, skb, mapping_ctx, mapped_obj_id, ct_priv, zone_restore_id,
0, NULL);
}
static struct mapping_ctx *
mlx5e_get_priv_obj_mapping(struct mlx5e_priv *priv)
{
struct mlx5e_tc_table *tc;
struct mlx5_eswitch *esw;
struct mapping_ctx *ctx;
if (is_mdev_switchdev_mode(priv->mdev)) {
esw = priv->mdev->priv.eswitch;
ctx = esw->offloads.reg_c0_obj_pool;
} else {
tc = mlx5e_fs_get_tc(priv->fs);
ctx = tc->mapping;
}
return ctx;
}
int mlx5e_tc_action_miss_mapping_get(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr,
u64 act_miss_cookie, u32 *act_miss_mapping)
{
struct mlx5_mapped_obj mapped_obj = {};
struct mlx5_eswitch *esw;
struct mapping_ctx *ctx;
int err;
ctx = mlx5e_get_priv_obj_mapping(priv);
mapped_obj.type = MLX5_MAPPED_OBJ_ACT_MISS;
mapped_obj.act_miss_cookie = act_miss_cookie;
err = mapping_add(ctx, &mapped_obj, act_miss_mapping);
if (err)
return err;
if (!is_mdev_switchdev_mode(priv->mdev))
return 0;
esw = priv->mdev->priv.eswitch;
attr->act_id_restore_rule = esw_add_restore_rule(esw, *act_miss_mapping);
if (IS_ERR(attr->act_id_restore_rule))
goto err_rule;
return 0;
err_rule:
mapping_remove(ctx, *act_miss_mapping);
return err;
}
void mlx5e_tc_action_miss_mapping_put(struct mlx5e_priv *priv, struct mlx5_flow_attr *attr,
u32 act_miss_mapping)
{
struct mapping_ctx *ctx = mlx5e_get_priv_obj_mapping(priv);
if (is_mdev_switchdev_mode(priv->mdev))
mlx5_del_flow_rules(attr->act_id_restore_rule);
mapping_remove(ctx, act_miss_mapping);
}
