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IB/rdmavt: Add srq functionality to rdmavt

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Fill in srq function stubs with code derived from hfi1 and qib.
Move necessary functions and data structure members as well.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Jubin John
2016-02-03 14:14:36 -08:00
committed by Doug Ledford
parent 034a3e7079
commit b8f881b913
5 changed files with 293 additions and 6 deletions
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37
drivers/infiniband/sw/rdmavt/qp.c
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@@ -1517,7 +1517,42 @@ bail:
int rvt_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
struct ib_recv_wr **bad_wr)
{
return -EOPNOTSUPP;
struct rvt_srq *srq = ibsrq_to_rvtsrq(ibsrq);
struct rvt_rwq *wq;
unsigned long flags;
for (; wr; wr = wr->next) {
struct rvt_rwqe *wqe;
u32 next;
int i;
if ((unsigned)wr->num_sge > srq->rq.max_sge) {
*bad_wr = wr;
return -EINVAL;
}
spin_lock_irqsave(&srq->rq.lock, flags);
wq = srq->rq.wq;
next = wq->head + 1;
if (next >= srq->rq.size)
next = 0;
if (next == wq->tail) {
spin_unlock_irqrestore(&srq->rq.lock, flags);
*bad_wr = wr;
return -ENOMEM;
}
wqe = rvt_get_rwqe_ptr(&srq->rq, wq->head);
wqe->wr_id = wr->wr_id;
wqe->num_sge = wr->num_sge;
for (i = 0; i < wr->num_sge; i++)
wqe->sg_list[i] = wr->sg_list[i];
/* Make sure queue entry is written before the head index. */
smp_wmb();
wq->head = next;
spin_unlock_irqrestore(&srq->rq.lock, flags);
}
return 0;
}
void rvt_free_qpn(struct rvt_qpn_table *qpt, u32 qpn)