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| author |   Potnuri Bharat Teja <bharat@chelsio.com> | 2018-08-02 11:33:04 +0530 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@mellanox.com> | 2018-08-02 20:16:02 -0600 |
| commit | 94245f4ad9e10c161affaa4763136d29fbe91cb9 (patch) | |
| tree | 7625512a78191c17c27a1fcff74fd7c1771dbf06 /drivers/infiniband/hw/cxgb4/t4fw_ri_api.h | |
| parent | iw_cxgb4: RDMA write with immediate support (diff) | |
| download | linux-dev-94245f4ad9e10c161affaa4763136d29fbe91cb9.tar.xz linux-dev-94245f4ad9e10c161affaa4763136d29fbe91cb9.zip | |
iw_cxgb4: Support FW write completion WR
To optimize NVME-oF READ IOPs, use a specialized WQE that combines
the RDMA WRITE and SEND_INV WR chain submitted by the NVME-oF target
driver.
This reduces uP overhead per NVME-oF IO, and results in over 10%
improvement in NVME-oF 4K READ IOPs.
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/t4fw_ri_api.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h index 62606e66ba20..cbdb300a4794 100644 --- a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h +++ b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h @@ -595,6 +595,37 @@ struct fw_ri_send_wr { #define FW_RI_SEND_WR_SENDOP_G(x) \ (((x) >> FW_RI_SEND_WR_SENDOP_S) & FW_RI_SEND_WR_SENDOP_M) +struct fw_ri_rdma_write_cmpl_wr { + __u8 opcode; + __u8 flags; + __u16 wrid; + __u8 r1[3]; + __u8 len16; + __u8 r2; + __u8 flags_send; + __u16 wrid_send; + __be32 stag_inv; + __be32 plen; + __be32 stag_sink; + __be64 to_sink; + union fw_ri_cmpl { + struct fw_ri_immd_cmpl { + __u8 op; + __u8 r1[6]; + __u8 immdlen; + __u8 data[16]; + } immd_src; + struct fw_ri_isgl isgl_src; + } u_cmpl; + __be64 r3; +#ifndef C99_NOT_SUPPORTED + union fw_ri_write { + struct fw_ri_immd immd_src[0]; + struct fw_ri_isgl isgl_src[0]; + } u; +#endif +}; + struct fw_ri_rdma_read_wr { __u8 opcode; __u8 flags; |