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ib_srpt: Rework the max_sge computation changes from r5795

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5894 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2014-11-27 15:29:29 +00:00
parent efa1a763a6
commit 7507b77063
1 changed files with 8 additions and 1 deletions
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srpt/src/ib_srpt.c
+8 -1
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@@ -2237,7 +2237,14 @@ static int srpt_create_ch_ib(struct srpt_rdma_ch *ch)
qp_init->sq_sig_type = IB_SIGNAL_REQ_WR;
qp_init->qp_type = IB_QPT_RC;
qp_init->cap.max_send_wr = srpt_sq_size;
ch->max_sge = max_t(int, 1, sdev->dev_attr.max_sge - max_sge_delta);
/*
* For max_sge values > 2 * max_sge_delta, subtract max_sge_delta. For
* max_sge values < max_sge_delta, use max_sge. For intermediate
* max_sge values, use max_sge_delta.
*/
ch->max_sge = sdev->dev_attr.max_sge -
min(max_sge_delta,
max_t(unsigned, 0, sdev->dev_attr.max_sge - max_sge_delta));
qp_init->cap.max_send_sge = ch->max_sge;
qp_init->cap.max_recv_sge = ch->max_sge;
if (sdev->use_srq) {