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IB: split struct ib_send_wr

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This patch split up struct ib_send_wr so that all non-trivial verbs
use their own structure which embedds struct ib_send_wr.  This dramaticly
shrinks the size of a WR for most common operations:

sizeof(struct ib_send_wr) (old):	96

sizeof(struct ib_send_wr):		48
sizeof(struct ib_rdma_wr):		64
sizeof(struct ib_atomic_wr):		96
sizeof(struct ib_ud_wr):		88
sizeof(struct ib_fast_reg_wr):		88
sizeof(struct ib_bind_mw_wr):		96
sizeof(struct ib_sig_handover_wr):	80

And with Sagi's pending MR rework the fast registration WR will also be
down to a reasonable size:

sizeof(struct ib_fastreg_wr):		64

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> [srp, srpt]
Reviewed-by: Chuck Lever <chuck.lever@oracle.com> [sunrpc]
Tested-by: Haggai Eran <haggaie@mellanox.com>
Tested-by: Sagi Grimberg <sagig@mellanox.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
This commit is contained in:
Christoph Hellwig
2015-10-08 09:16:33 +01:00
parent b8cab5dab1
commit e622f2f4ad
63 changed files with 1147 additions and 981 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/infiniband/hw/qib/qib_verbs.h
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@@ -338,7 +338,13 @@ struct qib_mr {
* in qp->s_max_sge.
*/
struct qib_swqe {
struct ib_send_wr wr; /* don't use wr.sg_list */
union {
struct ib_send_wr wr; /* don't use wr.sg_list */
struct ib_ud_wr ud_wr;
struct ib_fast_reg_wr fast_reg_wr;
struct ib_rdma_wr rdma_wr;
struct ib_atomic_wr atomic_wr;
};
u32 psn; /* first packet sequence number */
u32 lpsn; /* last packet sequence number */
u32 ssn; /* send sequence number */