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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

23
drivers/infiniband/hw/qib/qib_keys.c
View File

@@ -338,12 +338,13 @@ bail:
/*
* Initialize the memory region specified by the work reqeust.
*/
int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr)
int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *send_wr)
{
struct ib_fast_reg_wr *wr = fast_reg_wr(send_wr);
struct qib_lkey_table *rkt = &to_idev(qp->ibqp.device)->lk_table;
struct qib_pd *pd = to_ipd(qp->ibqp.pd);
struct qib_mregion *mr;
u32 rkey = wr->wr.fast_reg.rkey;
u32 rkey = wr->rkey;
unsigned i, n, m;
int ret = -EINVAL;
unsigned long flags;
@@ -360,22 +361,22 @@ int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr)
if (unlikely(mr == NULL || qp->ibqp.pd != mr->pd))
goto bail;
if (wr->wr.fast_reg.page_list_len > mr->max_segs)
if (wr->page_list_len > mr->max_segs)
goto bail;
ps = 1UL << wr->wr.fast_reg.page_shift;
if (wr->wr.fast_reg.length > ps * wr->wr.fast_reg.page_list_len)
ps = 1UL << wr->page_shift;
if (wr->length > ps * wr->page_list_len)
goto bail;
mr->user_base = wr->wr.fast_reg.iova_start;
mr->iova = wr->wr.fast_reg.iova_start;
mr->user_base = wr->iova_start;
mr->iova = wr->iova_start;
mr->lkey = rkey;
mr->length = wr->wr.fast_reg.length;
mr->access_flags = wr->wr.fast_reg.access_flags;
page_list = wr->wr.fast_reg.page_list->page_list;
mr->length = wr->length;
mr->access_flags = wr->access_flags;
page_list = wr->page_list->page_list;
m = 0;
n = 0;
for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) {
for (i = 0; i < wr->page_list_len; i++) {
mr->map[m]->segs[n].vaddr = (void *) page_list[i];
mr->map[m]->segs[n].length = ps;
if (++n == QIB_SEGSZ) {