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linux/include/uapi/rdma/mlx5-abi.h
Bodong Wang d949167d68 IB/mlx5: Report mlx5 packet pacing capabilities when querying device 
Enable mlx5 based hardware to report packet pacing capabilities
from kernel to user space. Packet pacing allows to limit the rate to any
number between the maximum and minimum, based on user settings.

The capabilities are exposed to user space through query_device by uhw.
The following capabilities are reported:

1. The maximum and minimum rate limit in kbps supported by packet pacing.
2. Bitmap showing which QP types are supported by packet pacing operation.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-13 13:39:50 -05:00

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/*
* Copyright (c) 2013-2015, 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_ABI_USER_H
#define MLX5_ABI_USER_H
#include <linux/types.h>
enum {
MLX5_QP_FLAG_SIGNATURE = 1 << 0,
MLX5_QP_FLAG_SCATTER_CQE = 1 << 1,
};
enum {
MLX5_SRQ_FLAG_SIGNATURE = 1 << 0,
};
enum {
MLX5_WQ_FLAG_SIGNATURE = 1 << 0,
};
/* Increment this value if any changes that break userspace ABI
* compatibility are made.
*/
#define MLX5_IB_UVERBS_ABI_VERSION 1
/* Make sure that all structs defined in this file remain laid out so
* that they pack the same way on 32-bit and 64-bit architectures (to
* avoid incompatibility between 32-bit userspace and 64-bit kernels).
* In particular do not use pointer types -- pass pointers in __u64
* instead.
*/
struct mlx5_ib_alloc_ucontext_req {
__u32 total_num_uuars;
__u32 num_low_latency_uuars;
};
struct mlx5_ib_alloc_ucontext_req_v2 {
__u32 total_num_uuars;
__u32 num_low_latency_uuars;
__u32 flags;
__u32 comp_mask;
__u8 max_cqe_version;
__u8 reserved0;
__u16 reserved1;
__u32 reserved2;
};
enum mlx5_ib_alloc_ucontext_resp_mask {
MLX5_IB_ALLOC_UCONTEXT_RESP_MASK_CORE_CLOCK_OFFSET = 1UL << 0,
};
enum mlx5_user_cmds_supp_uhw {
MLX5_USER_CMDS_SUPP_UHW_QUERY_DEVICE = 1 << 0,
MLX5_USER_CMDS_SUPP_UHW_CREATE_AH = 1 << 1,
};
struct mlx5_ib_alloc_ucontext_resp {
__u32 qp_tab_size;
__u32 bf_reg_size;
__u32 tot_uuars;
__u32 cache_line_size;
__u16 max_sq_desc_sz;
__u16 max_rq_desc_sz;
__u32 max_send_wqebb;
__u32 max_recv_wr;
__u32 max_srq_recv_wr;
__u16 num_ports;
__u16 reserved1;
__u32 comp_mask;
__u32 response_length;
__u8 cqe_version;
__u8 cmds_supp_uhw;
__u16 reserved2;
__u64 hca_core_clock_offset;
};
struct mlx5_ib_alloc_pd_resp {
__u32 pdn;
};
struct mlx5_ib_tso_caps {
__u32 max_tso; /* Maximum tso payload size in bytes */
/* Corresponding bit will be set if qp type from
* 'enum ib_qp_type' is supported, e.g.
* supported_qpts |= 1 << IB_QPT_UD
*/
__u32 supported_qpts;
};
struct mlx5_ib_rss_caps {
__u64 rx_hash_fields_mask; /* enum mlx5_rx_hash_fields */
__u8 rx_hash_function; /* enum mlx5_rx_hash_function_flags */
__u8 reserved[7];
};
enum mlx5_ib_cqe_comp_res_format {
MLX5_IB_CQE_RES_FORMAT_HASH = 1 << 0,
MLX5_IB_CQE_RES_FORMAT_CSUM = 1 << 1,
MLX5_IB_CQE_RES_RESERVED = 1 << 2,
};
struct mlx5_ib_cqe_comp_caps {
__u32 max_num;
__u32 supported_format; /* enum mlx5_ib_cqe_comp_res_format */
};
struct mlx5_packet_pacing_caps {
__u32 qp_rate_limit_min;
__u32 qp_rate_limit_max; /* In kpbs */
/* Corresponding bit will be set if qp type from
* 'enum ib_qp_type' is supported, e.g.
* supported_qpts |= 1 << IB_QPT_RAW_PACKET
*/
__u32 supported_qpts;
__u32 reserved;
};
struct mlx5_ib_query_device_resp {
__u32 comp_mask;
__u32 response_length;
struct mlx5_ib_tso_caps tso_caps;
struct mlx5_ib_rss_caps rss_caps;
struct mlx5_ib_cqe_comp_caps cqe_comp_caps;
struct mlx5_packet_pacing_caps packet_pacing_caps;
__u32 mlx5_ib_support_multi_pkt_send_wqes;
__u32 reserved;
};
struct mlx5_ib_create_cq {
__u64 buf_addr;
__u64 db_addr;
__u32 cqe_size;
__u8 cqe_comp_en;
__u8 cqe_comp_res_format;
__u16 reserved; /* explicit padding (optional on i386) */
};
struct mlx5_ib_create_cq_resp {
__u32 cqn;
__u32 reserved;
};
struct mlx5_ib_resize_cq {
__u64 buf_addr;
__u16 cqe_size;
__u16 reserved0;
__u32 reserved1;
};
struct mlx5_ib_create_srq {
__u64 buf_addr;
__u64 db_addr;
__u32 flags;
__u32 reserved0; /* explicit padding (optional on i386) */
__u32 uidx;
__u32 reserved1;
};
struct mlx5_ib_create_srq_resp {
__u32 srqn;
__u32 reserved;
};
struct mlx5_ib_create_qp {
__u64 buf_addr;
__u64 db_addr;
__u32 sq_wqe_count;
__u32 rq_wqe_count;
__u32 rq_wqe_shift;
__u32 flags;
__u32 uidx;
__u32 reserved0;
__u64 sq_buf_addr;
};
/* RX Hash function flags */
enum mlx5_rx_hash_function_flags {
MLX5_RX_HASH_FUNC_TOEPLITZ = 1 << 0,
};
/*
* RX Hash flags, these flags allows to set which incoming packet's field should
* participates in RX Hash. Each flag represent certain packet's field,
* when the flag is set the field that is represented by the flag will
* participate in RX Hash calculation.
* Note: *IPV4 and *IPV6 flags can't be enabled together on the same QP
* and *TCP and *UDP flags can't be enabled together on the same QP.
*/
enum mlx5_rx_hash_fields {
MLX5_RX_HASH_SRC_IPV4 = 1 << 0,
MLX5_RX_HASH_DST_IPV4 = 1 << 1,
MLX5_RX_HASH_SRC_IPV6 = 1 << 2,
MLX5_RX_HASH_DST_IPV6 = 1 << 3,
MLX5_RX_HASH_SRC_PORT_TCP = 1 << 4,
MLX5_RX_HASH_DST_PORT_TCP = 1 << 5,
MLX5_RX_HASH_SRC_PORT_UDP = 1 << 6,
MLX5_RX_HASH_DST_PORT_UDP = 1 << 7
};
struct mlx5_ib_create_qp_rss {
__u64 rx_hash_fields_mask; /* enum mlx5_rx_hash_fields */
__u8 rx_hash_function; /* enum mlx5_rx_hash_function_flags */
__u8 rx_key_len; /* valid only for Toeplitz */
__u8 reserved[6];
__u8 rx_hash_key[128]; /* valid only for Toeplitz */
__u32 comp_mask;
__u32 reserved1;
};
struct mlx5_ib_create_qp_resp {
__u32 uuar_index;
};
struct mlx5_ib_alloc_mw {
__u32 comp_mask;
__u8 num_klms;
__u8 reserved1;
__u16 reserved2;
};
struct mlx5_ib_create_wq {
__u64 buf_addr;
__u64 db_addr;
__u32 rq_wqe_count;
__u32 rq_wqe_shift;
__u32 user_index;
__u32 flags;
__u32 comp_mask;
__u32 reserved;
};
struct mlx5_ib_create_ah_resp {
__u32 response_length;
__u8 dmac[ETH_ALEN];
__u8 reserved[6];
};
struct mlx5_ib_create_wq_resp {
__u32 response_length;
__u32 reserved;
};
struct mlx5_ib_create_rwq_ind_tbl_resp {
__u32 response_length;
__u32 reserved;
};
struct mlx5_ib_modify_wq {
__u32 comp_mask;
__u32 reserved;
};
#endif /* MLX5_ABI_USER_H */
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