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isert: Only set signalled flag when needed

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Do not set signalled flag and then zero it for unneeded cases.
Instead only set it when necessary
    
Signed-off-by: Yan Burman <yanb@mellanox.com>


git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@6481 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2015-08-25 21:40:11 +00:00
parent 58cfc4f8b8
commit 4fcec5f359
2 changed files with 7 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
iscsi-scst/kernel/isert-scst/iser_buf.c
View File

@@ -220,12 +220,15 @@ int isert_wr_init(struct isert_wr *wr,
enum ib_wr_opcode send_wr_op = IB_WR_SEND;
struct scatterlist *sg_tmp;
int i;
u32 send_flags = 0;
TRACE_ENTRY();
switch (wr_op) {
case ISER_WR_RECV:
break;
case ISER_WR_SEND:
send_flags = IB_SEND_SIGNALED;
break;
case ISER_WR_RDMA_READ:
send_wr_op = IB_WR_RDMA_READ;
@@ -280,7 +283,7 @@ int isert_wr_init(struct isert_wr *wr,
wr->send_wr.sg_list = wr->sge_list;
wr->send_wr.num_sge = sg_cnt;
wr->send_wr.opcode = send_wr_op;
wr->send_wr.send_flags = IB_SEND_SIGNALED;
wr->send_wr.send_flags = send_flags;
}
out:

5
iscsi-scst/kernel/isert-scst/iser_pdu.c
View File

@@ -214,10 +214,8 @@ static inline void isert_link_send_wrs(struct isert_wr *from_wr,
struct isert_wr *to_wr)
{
from_wr->send_wr.next = &to_wr->send_wr;
from_wr->send_wr.send_flags = 0; /* not signaled */
to_wr->send_wr.next = NULL;
to_wr->send_wr.send_flags = IB_SEND_SIGNALED;
}
static inline void isert_link_send_pdu_wrs(struct isert_cmnd *from_pdu,
@@ -282,6 +280,9 @@ int isert_prepare_rdma(struct isert_cmnd *isert_pdu,
for (i = 1; i < wr_cnt; ++i)
isert_link_send_wrs(&isert_pdu->wr[i - 1], &isert_pdu->wr[i]);
if (op == ISER_WR_RDMA_READ)
isert_pdu->wr[wr_cnt - 1].send_wr.send_flags = IB_SEND_SIGNALED;
out:
TRACE_EXIT_RES(wr_cnt);
return wr_cnt;