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IB/mlx4: Add support for RSS QP

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Add support to work with a RSS QP by using an indirection table object
upon QP creation. Other related QP verbs (e.g. modify/destroy/query) were
updated as well for that QP mode.

Notes:
- The RX hash properties are supplied as driver private data.
- The RSS QP port is used on the associated WQs in its indirection
  table. Applying different ports during WQ life time is not allowed.
- The expected RSS QP flow is: create, modify(RST->INIT),
  modify(RST->RTR), destroy.

Signed-off-by: Guy Levi <guyle@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Guy Levi
2017-07-04 16:24:26 +03:00
committed by Doug Ledford
parent b8d46ca035
commit 3078f5f1bd
3 changed files with 472 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/infiniband/hw/mlx4/mlx4_ib.h
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@@ -46,6 +46,7 @@
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
#include <linux/mlx4/qp.h>
#define MLX4_IB_DRV_NAME "mlx4_ib"
@@ -299,6 +300,12 @@ struct mlx4_wqn_range {
struct list_head list;
};
struct mlx4_ib_rss {
unsigned int base_qpn_tbl_sz;
u8 flags;
u8 rss_key[MLX4_EN_RSS_KEY_SIZE];
};
struct mlx4_ib_qp {
union {
struct ib_qp ibqp;
@@ -345,6 +352,7 @@ struct mlx4_ib_qp {
struct mlx4_wqn_range *wqn_range;
/* Number of RSS QP parents that uses this WQ */
u32 rss_usecnt;
struct mlx4_ib_rss *rss_ctx;
};
struct mlx4_ib_srq {

453
drivers/infiniband/hw/mlx4/qp.c
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File diff suppressed because it is too large Load Diff

33
include/uapi/rdma/mlx4-abi.h
View File

@@ -95,6 +95,16 @@ struct mlx4_ib_create_srq_resp {
__u32 reserved;
};
struct mlx4_ib_create_qp_rss {
__u64 rx_hash_fields_mask;
__u8 rx_hash_function;
__u8 rx_key_len;
__u8 reserved[6];
__u8 rx_hash_key[40];
__u32 comp_mask;
__u32 reserved1;
};
struct mlx4_ib_create_qp {
__u64 buf_addr;
__u64 db_addr;
@@ -123,4 +133,27 @@ struct mlx4_ib_create_rwq_ind_tbl_resp {
__u32 response_length;
__u32 reserved;
};
/* RX Hash function flags */
enum mlx4_ib_rx_hash_function_flags {
MLX4_IB_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.
*/
enum mlx4_ib_rx_hash_fields {
MLX4_IB_RX_HASH_SRC_IPV4 = 1 << 0,
MLX4_IB_RX_HASH_DST_IPV4 = 1 << 1,
MLX4_IB_RX_HASH_SRC_IPV6 = 1 << 2,
MLX4_IB_RX_HASH_DST_IPV6 = 1 << 3,
MLX4_IB_RX_HASH_SRC_PORT_TCP = 1 << 4,
MLX4_IB_RX_HASH_DST_PORT_TCP = 1 << 5,
MLX4_IB_RX_HASH_SRC_PORT_UDP = 1 << 6,
MLX4_IB_RX_HASH_DST_PORT_UDP = 1 << 7
};
#endif /* MLX4_ABI_USER_H */