Release 4.17 include/linux/mlx5/fs_helpers.h
/*
* Copyright (c) 2018, 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.
*/
#ifndef _MLX5_FS_HELPERS_
#define _MLX5_FS_HELPERS_
#include <linux/mlx5/mlx5_ifc.h>
#define MLX5_FS_IPV4_VERSION 4
#define MLX5_FS_IPV6_VERSION 6
static inline bool mlx5_fs_is_ipsec_flow(const u32 *match_c)
{
void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters);
return MLX5_GET(fte_match_set_misc, misc_params_c, outer_esp_spi);
}
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static inline bool _mlx5_fs_is_outer_ipproto_flow(const u32 *match_c,
const u32 *match_v, u8 match)
{
const void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
const void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
return MLX5_GET(fte_match_set_lyr_2_4, headers_c, ip_protocol) == 0xff &&
MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol) == match;
}
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static inline bool mlx5_fs_is_outer_tcp_flow(const u32 *match_c,
const u32 *match_v)
{
return _mlx5_fs_is_outer_ipproto_flow(match_c, match_v, IPPROTO_TCP);
}
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static inline bool mlx5_fs_is_outer_udp_flow(const u32 *match_c,
const u32 *match_v)
{
return _mlx5_fs_is_outer_ipproto_flow(match_c, match_v, IPPROTO_UDP);
}
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static inline bool mlx5_fs_is_vxlan_flow(const u32 *match_c)
{
void *misc_params_c = MLX5_ADDR_OF(fte_match_param, match_c,
misc_parameters);
return MLX5_GET(fte_match_set_misc, misc_params_c, vxlan_vni);
}
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static inline bool _mlx5_fs_is_outer_ipv_flow(struct mlx5_core_dev *mdev,
const u32 *match_c,
const u32 *match_v, int version)
{
int match_ipv = MLX5_CAP_FLOWTABLE_NIC_RX(mdev,
ft_field_support.outer_ip_version);
const void *headers_c = MLX5_ADDR_OF(fte_match_param, match_c,
outer_headers);
const void *headers_v = MLX5_ADDR_OF(fte_match_param, match_v,
outer_headers);
if (!match_ipv) {
u16 ethertype;
switch (version) {
case MLX5_FS_IPV4_VERSION:
ethertype = ETH_P_IP;
break;
case MLX5_FS_IPV6_VERSION:
ethertype = ETH_P_IPV6;
break;
default:
return false;
}
return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
ethertype) == 0xffff &&
MLX5_GET(fte_match_set_lyr_2_4, headers_v,
ethertype) == ethertype;
}
return MLX5_GET(fte_match_set_lyr_2_4, headers_c,
ip_version) == 0xf &&
MLX5_GET(fte_match_set_lyr_2_4, headers_v,
ip_version) == version;
}
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static inline bool
mlx5_fs_is_outer_ipv4_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
const u32 *match_v)
{
return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
MLX5_FS_IPV4_VERSION);
}
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static inline bool
mlx5_fs_is_outer_ipv6_flow(struct mlx5_core_dev *mdev, const u32 *match_c,
const u32 *match_v)
{
return _mlx5_fs_is_outer_ipv_flow(mdev, match_c, match_v,
MLX5_FS_IPV6_VERSION);
}
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static inline bool mlx5_fs_is_outer_ipsec_flow(const u32 *match_c)
{
void *misc_params_c =
MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);
return MLX5_GET(fte_match_set_misc, misc_params_c, outer_esp_spi);
}
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#endif
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