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/*
* 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 <linux/etherdevice.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/mlx5_ifc.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/fs.h>
#include "mlx5_core.h"
#include "eswitch.h"
struct mlx5_flow_rule *
mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw, int vport, u32 sqn)
{
struct mlx5_flow_destination dest;
struct mlx5_flow_rule *flow_rule;
int match_header = MLX5_MATCH_MISC_PARAMETERS;
u32 *match_v, *match_c;
void *misc;
match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
if (!match_v || !match_c) {
esw_warn(esw->dev, "FDB: Failed to alloc match parameters\n");
flow_rule = ERR_PTR(-ENOMEM);
goto out;
}
misc = MLX5_ADDR_OF(fte_match_param, match_v, misc_parameters);
MLX5_SET(fte_match_set_misc, misc, source_sqn, sqn);
MLX5_SET(fte_match_set_misc, misc, source_port, 0x0); /* source vport is 0 */
misc = MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_sqn);
MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = vport;
flow_rule = mlx5_add_flow_rule(esw->fdb_table.fdb, match_header, match_c,
match_v, MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,
0, &dest);
if (IS_ERR(flow_rule))
esw_warn(esw->dev, "FDB: Failed to add send to vport rule err %ld\n", PTR_ERR(flow_rule));
out:
kfree(match_v);
kfree(match_c);
return flow_rule;
}
static int esw_add_fdb_miss_rule(struct mlx5_eswitch *esw)
{
struct mlx5_flow_destination dest;
struct mlx5_flow_rule *flow_rule = NULL;
u32 *match_v, *match_c;
int err = 0;
match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);
if (!match_v || !match_c) {
esw_warn(esw->dev, "FDB: Failed to alloc match parameters\n");
err = -ENOMEM;
goto out;
}
dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
dest.vport_num = 0;
flow_rule = mlx5_add_flow_rule(esw->fdb_table.fdb, 0, match_c, match_v,
MLX5_FLOW_CONTEXT_ACTION_FWD_DEST, 0, &dest);
if (IS_ERR(flow_rule)) {
err = PTR_ERR(flow_rule);
esw_warn(esw->dev, "FDB: Failed to add miss flow rule err %d\n", err);
goto out;
}
esw->fdb_table.offloads.miss_rule = flow_rule;
out:
kfree(match_v);
kfree(match_c);
return err;
}
#define MAX_PF_SQ 256
int esw_create_offloads_fdb_table(struct mlx5_eswitch *esw, int nvports)
{
int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
struct mlx5_core_dev *dev = esw->dev;
struct mlx5_flow_namespace *root_ns;
struct mlx5_flow_table *fdb = NULL;
struct mlx5_flow_group *g;
u32 *flow_group_in;
void *match_criteria;
int table_size, ix, err = 0;
flow_group_in = mlx5_vzalloc(inlen);
if (!flow_group_in)
return -ENOMEM;
root_ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_FDB);
if (!root_ns) {
esw_warn(dev, "Failed to get FDB flow namespace\n");
goto ns_err;
}
esw_debug(dev, "Create offloads FDB table, log_max_size(%d)\n",
MLX5_CAP_ESW_FLOWTABLE_FDB(dev, log_max_ft_size));
table_size = nvports + MAX_PF_SQ + 1;
fdb = mlx5_create_flow_table(root_ns, 0, table_size, 0);
if (IS_ERR(fdb)) {
err = PTR_ERR(fdb);
esw_warn(dev, "Failed to create FDB Table err %d\n", err);
goto fdb_err;
}
esw->fdb_table.fdb = fdb;
/* create send-to-vport group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,
MLX5_MATCH_MISC_PARAMETERS);
match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);
MLX5_SET_TO_ONES(fte_match_param, match_criteria, misc_parameters.source_sqn);
MLX5_SET_TO_ONES(fte_match_param, match_criteria, misc_parameters.source_port);
ix = nvports + MAX_PF_SQ;
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ix - 1);
g = mlx5_create_flow_group(fdb, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create send-to-vport flow group err(%d)\n", err);
goto send_vport_err;
}
esw->fdb_table.offloads.send_to_vport_grp = g;
/* create miss group */
memset(flow_group_in, 0, inlen);
MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable, 0);
MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, ix);
MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, ix + 1);
g = mlx5_create_flow_group(fdb, flow_group_in);
if (IS_ERR(g)) {
err = PTR_ERR(g);
esw_warn(dev, "Failed to create miss flow group err(%d)\n", err);
goto miss_err;
}
esw->fdb_table.offloads.miss_grp = g;
err = esw_add_fdb_miss_rule(esw);
if (err)
goto miss_rule_err;
return 0;
miss_rule_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
miss_err:
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
send_vport_err:
mlx5_destroy_flow_table(fdb);
fdb_err:
ns_err:
kvfree(flow_group_in);
return err;
}
void esw_destroy_offloads_fdb_table(struct mlx5_eswitch *esw)
{
if (!esw->fdb_table.fdb)
return;
esw_debug(esw->dev, "Destroy offloads FDB Table\n");
mlx5_del_flow_rule(esw->fdb_table.offloads.miss_rule);
mlx5_destroy_flow_group(esw->fdb_table.offloads.send_to_vport_grp);
mlx5_destroy_flow_group(esw->fdb_table.offloads.miss_grp);
mlx5_destroy_flow_table(esw->fdb_table.fdb);
}
static int esw_create_offloads_table(struct mlx5_eswitch *esw)
{
struct mlx5_flow_namespace *ns;
struct mlx5_flow_table *ft_offloads;
struct mlx5_core_dev *dev = esw->dev;
int err = 0;
ns = mlx5_get_flow_namespace(dev, MLX5_FLOW_NAMESPACE_OFFLOADS);
if (!ns) {
esw_warn(esw->dev, "Failed to get offloads flow namespace\n");
return -ENOMEM;
}
ft_offloads = mlx5_create_flow_table(ns, 0, dev->priv.sriov.num_vfs + 2, 0);
if (IS_ERR(ft_offloads)) {
err = PTR_ERR(ft_offloads);
esw_warn(esw->dev, "Failed to create offloads table, err %d\n", err);
return err;
}
esw->offloads.ft_offloads = ft_offloads;
return 0;
}
static void esw_destroy_offloads_table(struct mlx5_eswitch *esw)
{
struct mlx5_esw_offload *offloads = &esw->offloads;
mlx5_destroy_flow_table(offloads->ft_offloads);
}
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