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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2020 Mellanox Technologies Inc. All rights reserved. */
#include "mlx5_core.h"
#include "eswitch.h"
#include "helper.h"
#include "lgcy.h"
static void esw_acl_egress_lgcy_rules_destroy(struct mlx5_vport *vport)
{
esw_acl_egress_vlan_destroy(vport);
if (!IS_ERR_OR_NULL(vport->egress.legacy.drop_rule)) {
mlx5_del_flow_rules(vport->egress.legacy.drop_rule);
vport->egress.legacy.drop_rule = NULL;
}
}
static int esw_acl_egress_lgcy_groups_create(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_group *drop_grp;
u32 *flow_group_in;
int err = 0;
err = esw_acl_egress_vlan_grp_create(esw, vport);
if (err)
return err;
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in) {
err = -ENOMEM;
goto alloc_err;
}
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 1);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, 1);
drop_grp = mlx5_create_flow_group(vport->egress.acl, flow_group_in);
if (IS_ERR(drop_grp)) {
err = PTR_ERR(drop_grp);
esw_warn(dev, "Failed to create E-Switch vport[%d] egress drop flow group, err(%d)\n",
vport->vport, err);
goto drop_grp_err;
}
vport->egress.legacy.drop_grp = drop_grp;
kvfree(flow_group_in);
return 0;
drop_grp_err:
kvfree(flow_group_in);
alloc_err:
esw_acl_egress_vlan_grp_destroy(vport);
return err;
}
static void esw_acl_egress_lgcy_groups_destroy(struct mlx5_vport *vport)
{
if (!IS_ERR_OR_NULL(vport->egress.legacy.drop_grp)) {
mlx5_destroy_flow_group(vport->egress.legacy.drop_grp);
vport->egress.legacy.drop_grp = NULL;
}
esw_acl_egress_vlan_grp_destroy(vport);
}
int esw_acl_egress_lgcy_setup(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
struct mlx5_flow_destination drop_ctr_dst = {};
struct mlx5_flow_destination *dst = NULL;
struct mlx5_fc *drop_counter = NULL;
struct mlx5_flow_act flow_act = {};
/* The egress acl table contains 2 rules:
* 1)Allow traffic with vlan_tag=vst_vlan_id
* 2)Drop all other traffic.
*/
int table_size = 2;
int dest_num = 0;
int err = 0;
if (vport->egress.legacy.drop_counter) {
drop_counter = vport->egress.legacy.drop_counter;
} else if (MLX5_CAP_ESW_EGRESS_ACL(esw->dev, flow_counter)) {
drop_counter = mlx5_fc_create(esw->dev, false);
if (IS_ERR(drop_counter)) {
esw_warn(esw->dev,
"vport[%d] configure egress drop rule counter err(%ld)\n",
vport->vport, PTR_ERR(drop_counter));
drop_counter = NULL;
}
vport->egress.legacy.drop_counter = drop_counter;
}
esw_acl_egress_lgcy_rules_destroy(vport);
if (!vport->info.vlan && !vport->info.qos) {
esw_acl_egress_lgcy_cleanup(esw, vport);
return 0;
}
if (!vport->egress.acl) {
vport->egress.acl = esw_acl_table_create(esw, vport,
MLX5_FLOW_NAMESPACE_ESW_EGRESS,
table_size);
if (IS_ERR(vport->egress.acl)) {
err = PTR_ERR(vport->egress.acl);
vport->egress.acl = NULL;
goto out;
}
err = esw_acl_egress_lgcy_groups_create(esw, vport);
if (err)
goto out;
}
esw_debug(esw->dev,
"vport[%d] configure egress rules, vlan(%d) qos(%d)\n",
vport->vport, vport->info.vlan, vport->info.qos);
/* Allowed vlan rule */
err = esw_egress_acl_vlan_create(esw, vport, NULL, vport->info.vlan,
MLX5_FLOW_CONTEXT_ACTION_ALLOW);
if (err)
goto out;
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_DROP;
/* Attach egress drop flow counter */
if (drop_counter) {
flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
drop_ctr_dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
drop_ctr_dst.counter_id = mlx5_fc_id(drop_counter);
dst = &drop_ctr_dst;
dest_num++;
}
vport->egress.legacy.drop_rule =
mlx5_add_flow_rules(vport->egress.acl, NULL,
&flow_act, dst, dest_num);
if (IS_ERR(vport->egress.legacy.drop_rule)) {
err = PTR_ERR(vport->egress.legacy.drop_rule);
esw_warn(esw->dev,
"vport[%d] configure egress drop rule failed, err(%d)\n",
vport->vport, err);
vport->egress.legacy.drop_rule = NULL;
goto out;
}
return err;
out:
esw_acl_egress_lgcy_cleanup(esw, vport);
return err;
}
void esw_acl_egress_lgcy_cleanup(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
if (IS_ERR_OR_NULL(vport->egress.acl))
goto clean_drop_counter;
esw_debug(esw->dev, "Destroy vport[%d] E-Switch egress ACL\n", vport->vport);
esw_acl_egress_lgcy_rules_destroy(vport);
esw_acl_egress_lgcy_groups_destroy(vport);
esw_acl_egress_table_destroy(vport);
clean_drop_counter:
if (vport->egress.legacy.drop_counter) {
mlx5_fc_destroy(esw->dev, vport->egress.legacy.drop_counter);
vport->egress.legacy.drop_counter = NULL;
}
}
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