/*
* drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
* Copyright (c) 2017 Arkadi Sharshevsky <arakdis@mellanox.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include <net/devlink.h>
#include "spectrum.h"
#include "spectrum_dpipe.h"
enum mlxsw_sp_field_metadata_id {
MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT,
MLXSW_SP_DPIPE_FIELD_METADATA_L3_FORWARD,
MLXSW_SP_DPIPE_FIELD_METADATA_L3_DROP,
};
static struct devlink_dpipe_field mlxsw_sp_dpipe_fields_metadata[] = {
{ .name = "erif_port",
.id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT,
.bitwidth = 32,
.mapping_type = DEVLINK_DPIPE_FIELD_MAPPING_TYPE_IFINDEX,
},
{ .name = "l3_forward",
.id = MLXSW_SP_DPIPE_FIELD_METADATA_L3_FORWARD,
.bitwidth = 1,
},
{ .name = "l3_drop",
.id = MLXSW_SP_DPIPE_FIELD_METADATA_L3_DROP,
.bitwidth = 1,
},
};
enum mlxsw_sp_dpipe_header_id {
MLXSW_SP_DPIPE_HEADER_METADATA,
};
static struct devlink_dpipe_header mlxsw_sp_dpipe_header_metadata = {
.name = "mlxsw_meta",
.id = MLXSW_SP_DPIPE_HEADER_METADATA,
.fields = mlxsw_sp_dpipe_fields_metadata,
.fields_count = ARRAY_SIZE(mlxsw_sp_dpipe_fields_metadata),
};
static struct devlink_dpipe_header *mlxsw_dpipe_headers[] = {
&mlxsw_sp_dpipe_header_metadata,
};
static struct devlink_dpipe_headers mlxsw_sp_dpipe_headers = {
.headers = mlxsw_dpipe_headers,
.headers_count = ARRAY_SIZE(mlxsw_dpipe_headers),
};
static int mlxsw_sp_dpipe_table_erif_actions_dump(void *priv,
struct sk_buff *skb)
{
struct devlink_dpipe_action action = {0};
int err;
action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
action.header = &mlxsw_sp_dpipe_header_metadata;
action.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_L3_FORWARD;
err = devlink_dpipe_action_put(skb, &action);
if (err)
return err;
action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;
action.header = &mlxsw_sp_dpipe_header_metadata;
action.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_L3_DROP;
return devlink_dpipe_action_put(skb, &action);
}
static int mlxsw_sp_dpipe_table_erif_matches_dump(void *priv,
struct sk_buff *skb)
{
struct devlink_dpipe_match match = {0};
match.type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;
match.header = &mlxsw_sp_dpipe_header_metadata;
match.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT;
return devlink_dpipe_match_put(skb, &match);
}
static struct devlink_dpipe_table_ops mlxsw_sp_erif_ops = {
.matches_dump = mlxsw_sp_dpipe_table_erif_matches_dump,
.actions_dump = mlxsw_sp_dpipe_table_erif_actions_dump,
};
static int mlxsw_sp_dpipe_erif_table_init(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
u64 table_size;
table_size = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS);
return devlink_dpipe_table_register(devlink,
MLXSW_SP_DPIPE_TABLE_NAME_ERIF,
&mlxsw_sp_erif_ops,
mlxsw_sp, table_size,
false);
}
static void mlxsw_sp_dpipe_erif_table_fini(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
devlink_dpipe_table_unregister(devlink, MLXSW_SP_DPIPE_TABLE_NAME_ERIF);
}
int mlxsw_sp_dpipe_init(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
int err;
err = devlink_dpipe_headers_register(devlink,
&mlxsw_sp_dpipe_headers);
if (err)
return err;
err = mlxsw_sp_dpipe_erif_table_init(mlxsw_sp);
if (err)
goto err_erif_register;
return 0;
err_erif_register:
devlink_dpipe_headers_unregister(priv_to_devlink(mlxsw_sp->core));
return err;
}
void mlxsw_sp_dpipe_fini(struct mlxsw_sp *mlxsw_sp)
{
struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
mlxsw_sp_dpipe_erif_table_fini(mlxsw_sp);
devlink_dpipe_headers_unregister(devlink);
}
