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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 "ofld.h"
static void esw_acl_egress_ofld_fwd2vport_destroy(struct mlx5_vport *vport)
{
if (!vport->egress.offloads.fwd_rule)
return;
mlx5_del_flow_rules(vport->egress.offloads.fwd_rule);
vport->egress.offloads.fwd_rule = NULL;
}
static int esw_acl_egress_ofld_fwd2vport_create(struct mlx5_eswitch *esw,
struct mlx5_vport *vport,
struct mlx5_flow_destination *fwd_dest)
{
struct mlx5_flow_act flow_act = {};
int err = 0;
esw_debug(esw->dev, "vport(%d) configure egress acl rule fwd2vport(%d)\n",
vport->vport, fwd_dest->vport.num);
/* Delete the old egress forward-to-vport rule if any */
esw_acl_egress_ofld_fwd2vport_destroy(vport);
flow_act.action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
vport->egress.offloads.fwd_rule =
mlx5_add_flow_rules(vport->egress.acl, NULL,
&flow_act, fwd_dest, 1);
if (IS_ERR(vport->egress.offloads.fwd_rule)) {
err = PTR_ERR(vport->egress.offloads.fwd_rule);
esw_warn(esw->dev,
"vport(%d) failed to add fwd2vport acl rule err(%d)\n",
vport->vport, err);
vport->egress.offloads.fwd_rule = NULL;
}
return err;
}
static int esw_acl_egress_ofld_rules_create(struct mlx5_eswitch *esw,
struct mlx5_vport *vport,
struct mlx5_flow_destination *fwd_dest)
{
int err = 0;
int action;
if (MLX5_CAP_GEN(esw->dev, prio_tag_required)) {
/* For prio tag mode, there is only 1 FTEs:
* 1) prio tag packets - pop the prio tag VLAN, allow
* Unmatched traffic is allowed by default
*/
esw_debug(esw->dev,
"vport[%d] configure prio tag egress rules\n", vport->vport);
action = MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
action |= fwd_dest ? MLX5_FLOW_CONTEXT_ACTION_FWD_DEST :
MLX5_FLOW_CONTEXT_ACTION_ALLOW;
/* prio tag vlan rule - pop it so vport receives untagged packets */
err = esw_egress_acl_vlan_create(esw, vport, fwd_dest, 0, action);
if (err)
goto prio_err;
}
if (fwd_dest) {
err = esw_acl_egress_ofld_fwd2vport_create(esw, vport, fwd_dest);
if (err)
goto fwd_err;
}
return 0;
fwd_err:
esw_acl_egress_vlan_destroy(vport);
prio_err:
return err;
}
static void esw_acl_egress_ofld_rules_destroy(struct mlx5_vport *vport)
{
esw_acl_egress_vlan_destroy(vport);
esw_acl_egress_ofld_fwd2vport_destroy(vport);
}
static int esw_acl_egress_ofld_groups_create(struct mlx5_eswitch *esw,
struct mlx5_vport *vport)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_flow_group *fwd_grp;
u32 *flow_group_in;
u32 flow_index = 0;
int ret = 0;
if (MLX5_CAP_GEN(esw->dev, prio_tag_required)) {
ret = esw_acl_egress_vlan_grp_create(esw, vport);
if (ret)
return ret;
flow_index++;
}
if (!mlx5_esw_acl_egress_fwd2vport_supported(esw))
goto out;
flow_group_in = kvzalloc(inlen, GFP_KERNEL);
if (!flow_group_in) {
ret = -ENOMEM;
goto fwd_grp_err;
}
/* This group holds 1 FTE to forward all packets to other vport
* when bond vports is supported.
*/
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, flow_index);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, flow_index);
fwd_grp = mlx5_create_flow_group(vport->egress.acl, flow_group_in);
if (IS_ERR(fwd_grp)) {
ret = PTR_ERR(fwd_grp);
esw_warn(esw->dev,
"Failed to create vport[%d] egress fwd2vport flow group, err(%d)\n",
vport->vport, ret);
kvfree(flow_group_in);
goto fwd_grp_err;
}
vport->egress.offloads.fwd_grp = fwd_grp;
kvfree(flow_group_in);
return 0;
fwd_grp_err:
esw_acl_egress_vlan_grp_destroy(vport);
out:
return ret;
}
static void esw_acl_egress_ofld_groups_destroy(struct mlx5_vport *vport)
{
if (!IS_ERR_OR_NULL(vport->egress.offloads.fwd_grp)) {
mlx5_destroy_flow_group(vport->egress.offloads.fwd_grp);
vport->egress.offloads.fwd_grp = NULL;
}
esw_acl_egress_vlan_grp_destroy(vport);
}
int esw_acl_egress_ofld_setup(struct mlx5_eswitch *esw, struct mlx5_vport *vport)
{
int table_size = 0;
int err;
if (!mlx5_esw_acl_egress_fwd2vport_supported(esw) &&
!MLX5_CAP_GEN(esw->dev, prio_tag_required))
return 0;
esw_acl_egress_ofld_rules_destroy(vport);
if (mlx5_esw_acl_egress_fwd2vport_supported(esw))
table_size++;
if (MLX5_CAP_GEN(esw->dev, prio_tag_required))
table_size++;
vport->egress.acl = esw_acl_table_create(esw, vport->vport,
MLX5_FLOW_NAMESPACE_ESW_EGRESS, table_size);
if (IS_ERR_OR_NULL(vport->egress.acl)) {
err = PTR_ERR(vport->egress.acl);
vport->egress.acl = NULL;
return err;
}
err = esw_acl_egress_ofld_groups_create(esw, vport);
if (err)
goto group_err;
esw_debug(esw->dev, "vport[%d] configure egress rules\n", vport->vport);
err = esw_acl_egress_ofld_rules_create(esw, vport, NULL);
if (err)
goto rules_err;
return 0;
rules_err:
esw_acl_egress_ofld_groups_destroy(vport);
group_err:
esw_acl_egress_table_destroy(vport);
return err;
}
void esw_acl_egress_ofld_cleanup(struct mlx5_vport *vport)
{
esw_acl_egress_ofld_rules_destroy(vport);
esw_acl_egress_ofld_groups_destroy(vport);
esw_acl_egress_table_destroy(vport);
}
int mlx5_esw_acl_egress_vport_bond(struct mlx5_eswitch *esw, u16 active_vport_num,
u16 passive_vport_num)
{
struct mlx5_vport *passive_vport = mlx5_eswitch_get_vport(esw, passive_vport_num);
struct mlx5_vport *active_vport = mlx5_eswitch_get_vport(esw, active_vport_num);
struct mlx5_flow_destination fwd_dest = {};
if (IS_ERR(active_vport))
return PTR_ERR(active_vport);
if (IS_ERR(passive_vport))
return PTR_ERR(passive_vport);
/* Cleanup and recreate rules WITHOUT fwd2vport of active vport */
esw_acl_egress_ofld_rules_destroy(active_vport);
esw_acl_egress_ofld_rules_create(esw, active_vport, NULL);
/* Cleanup and recreate all rules + fwd2vport rule of passive vport to forward */
esw_acl_egress_ofld_rules_destroy(passive_vport);
fwd_dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
fwd_dest.vport.num = active_vport_num;
fwd_dest.vport.vhca_id = MLX5_CAP_GEN(esw->dev, vhca_id);
fwd_dest.vport.flags = MLX5_FLOW_DEST_VPORT_VHCA_ID;
return esw_acl_egress_ofld_rules_create(esw, passive_vport, &fwd_dest);
}
int mlx5_esw_acl_egress_vport_unbond(struct mlx5_eswitch *esw, u16 vport_num)
{
struct mlx5_vport *vport = mlx5_eswitch_get_vport(esw, vport_num);
if (IS_ERR(vport))
return PTR_ERR(vport);
esw_acl_egress_ofld_rules_destroy(vport);
return esw_acl_egress_ofld_rules_create(esw, vport, NULL);
}
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