From: Harish Chegondi <harish.chegondi@xxxxxxxxx>
This patch removes the simple post recv function in favor of using rdmavt.
The packet receive processing still lives in the driver though.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxx>
Signed-off-by: Harish Chegondi <harish.chegondi@xxxxxxxxx>
---
drivers/infiniband/hw/qib/qib_verbs.c | 64 +--------------------------------
1 files changed, 1 insertions(+), 63 deletions(-)
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index 3766ea4..add899b 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -301,68 +301,6 @@ static void qib_copy_from_sge(void *data, struct rvt_sge_state *ss, u32 length)
}
/**
-
- * qib_post_receive - post a receive on a QP
- * @ibqp: the QP to post the receive on
- * @wr: the WR to post
- * @bad_wr: the first bad WR is put here
- *
- * This may be called from interrupt context.
- */
-static int qib_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
- struct ib_recv_wr **bad_wr)
-{
- struct rvt_qp *qp = ibqp_to_rvtqp(ibqp);
- struct rvt_rwq *wq = qp->r_rq.wq;
- unsigned long flags;
- int ret;
-
- /* Check that state is OK to post receive. */
- if (!(ib_rvt_state_ops[qp->state] & RVT_POST_RECV_OK) || !wq) {
- *bad_wr = wr;
- ret = -EINVAL;
- goto bail;
- }
-
- for (; wr; wr = wr->next) {
- struct rvt_rwqe *wqe;
- u32 next;
- int i;
-
- if ((unsigned) wr->num_sge > qp->r_rq.max_sge) {
- *bad_wr = wr;
- ret = -EINVAL;
- goto bail;
- }
-
- spin_lock_irqsave(&qp->r_rq.lock, flags);
- next = wq->head + 1;
- if (next >= qp->r_rq.size)
- next = 0;
- if (next == wq->tail) {
- spin_unlock_irqrestore(&qp->r_rq.lock, flags);
- *bad_wr = wr;
- ret = -ENOMEM;
- goto bail;
- }
-
- wqe = get_rwqe_ptr(&qp->r_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(&qp->r_rq.lock, flags);
- }
- ret = 0;
-
-bail:
- return ret;
-}
-
-/**
* qib_qp_rcv - processing an incoming packet on a QP
* @rcd: the context pointer
* @hdr: the packet header
@@ -1826,7 +1764,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
ibdev->query_qp = qib_query_qp;
ibdev->destroy_qp = qib_destroy_qp;
ibdev->post_send = NULL;
- ibdev->post_recv = qib_post_receive;
+ ibdev->post_recv = NULL;
ibdev->post_srq_recv = qib_post_srq_receive;
ibdev->create_cq = NULL;
ibdev->destroy_cq = NULL;
--
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