From 3346c4873733a109bea29467308a754038b886a9 Mon Sep 17 00:00:00 2001 From: Boris Pismenny Date: Sun, 20 Aug 2017 15:13:08 +0300 Subject: [PATCH] {net,IB}/mlx5: Add flow steering helpers Add helper functions that check if a protocol is part of a flow steering match criteria. Signed-off-by: Boris Pismenny Signed-off-by: Matan Barak Signed-off-by: Aviad Yehezkel Signed-off-by: Saeed Mahameed --- drivers/infiniband/hw/mlx5/main.c | 7 +- include/linux/mlx5/fs_helpers.h | 134 ++++++++++++++++++++++++++++++ include/linux/mlx5/mlx5_ifc.h | 8 +- 3 files changed, 143 insertions(+), 6 deletions(-) create mode 100644 include/linux/mlx5/fs_helpers.h diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index d50ace805995..d9474b95d8e5 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -59,6 +59,7 @@ #include "mlx5_ib.h" #include "ib_rep.h" #include "cmd.h" +#include #define DRIVER_NAME "mlx5_ib" #define DRIVER_VERSION "5.0-0" @@ -2312,8 +2313,6 @@ static void set_tos(void *outer_c, void *outer_v, u8 mask, u8 val) offsetof(typeof(filter), field) -\ sizeof(filter.field)) -#define IPV4_VERSION 4 -#define IPV6_VERSION 6 static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c, u32 *match_v, const union ib_flow_spec *ib_spec, struct mlx5_flow_act *action) @@ -2399,7 +2398,7 @@ static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c, MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_version, 0xf); MLX5_SET(fte_match_set_lyr_2_4, headers_v, - ip_version, IPV4_VERSION); + ip_version, MLX5_FS_IPV4_VERSION); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, 0xffff); @@ -2438,7 +2437,7 @@ static int parse_flow_attr(struct mlx5_core_dev *mdev, u32 *match_c, MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_version, 0xf); MLX5_SET(fte_match_set_lyr_2_4, headers_v, - ip_version, IPV6_VERSION); + ip_version, MLX5_FS_IPV6_VERSION); } else { MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, 0xffff); diff --git a/include/linux/mlx5/fs_helpers.h b/include/linux/mlx5/fs_helpers.h new file mode 100644 index 000000000000..7b476bbae731 --- /dev/null +++ b/include/linux/mlx5/fs_helpers.h @@ -0,0 +1,134 @@ +/* + * 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 + +#define MLX5_FS_IPV4_VERSION 4 +#define MLX5_FS_IPV6_VERSION 6 + +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; +} + +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); +} + +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); +} + +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); +} + +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; +} + +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); +} + +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); +} + +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); +} + +#endif diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index 9bc4ea0cf5a9..14ad84afe8ba 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -295,7 +295,9 @@ struct mlx5_ifc_flow_table_fields_supported_bits { u8 inner_tcp_dport[0x1]; u8 inner_tcp_flags[0x1]; u8 reserved_at_37[0x9]; - u8 reserved_at_40[0x1a]; + u8 reserved_at_40[0x17]; + u8 outer_esp_spi[0x1]; + u8 reserved_at_58[0x2]; u8 bth_dst_qp[0x1]; u8 reserved_at_5b[0x25]; @@ -437,7 +439,9 @@ struct mlx5_ifc_fte_match_set_misc_bits { u8 reserved_at_120[0x28]; u8 bth_dst_qp[0x18]; - u8 reserved_at_160[0xa0]; + u8 reserved_at_160[0x20]; + u8 outer_esp_spi[0x20]; + u8 reserved_at_1a0[0x60]; }; struct mlx5_ifc_cmd_pas_bits {