summaryrefslogtreecommitdiff
path: root/drivers/infiniband/hw/cxgb3/iwch_cq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch_cq.c')
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_cq.c64
1 files changed, 36 insertions, 28 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cq.c b/drivers/infiniband/hw/cxgb3/iwch_cq.c
index 0a8542c20804..a098c0140580 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cq.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cq.c
@@ -32,38 +32,16 @@
#include "iwch_provider.h"
#include "iwch.h"
-/*
- * Get one cq entry from cxio and map it to openib.
- *
- * Returns:
- * 0 EMPTY;
- * 1 cqe returned
- * -EAGAIN caller must try again
- * any other -errno fatal error
- */
-static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
- struct ib_wc *wc)
+static int __iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
+ struct iwch_qp *qhp, struct ib_wc *wc)
{
- struct iwch_qp *qhp = NULL;
- struct t3_cqe cqe, *rd_cqe;
- struct t3_wq *wq;
+ struct t3_wq *wq = qhp ? &qhp->wq : NULL;
+ struct t3_cqe cqe;
u32 credit = 0;
u8 cqe_flushed;
u64 cookie;
int ret = 1;
- rd_cqe = cxio_next_cqe(&chp->cq);
-
- if (!rd_cqe)
- return 0;
-
- qhp = get_qhp(rhp, CQE_QPID(*rd_cqe));
- if (!qhp)
- wq = NULL;
- else {
- spin_lock(&qhp->lock);
- wq = &(qhp->wq);
- }
ret = cxio_poll_cq(wq, &(chp->cq), &cqe, &cqe_flushed, &cookie,
&credit);
if (t3a_device(chp->rhp) && credit) {
@@ -79,7 +57,7 @@ static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
ret = 1;
wc->wr_id = cookie;
- wc->qp = &qhp->ibqp;
+ wc->qp = qhp ? &qhp->ibqp : NULL;
wc->vendor_err = CQE_STATUS(cqe);
wc->wc_flags = 0;
@@ -182,8 +160,38 @@ static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
}
}
out:
- if (wq)
+ return ret;
+}
+
+/*
+ * Get one cq entry from cxio and map it to openib.
+ *
+ * Returns:
+ * 0 EMPTY;
+ * 1 cqe returned
+ * -EAGAIN caller must try again
+ * any other -errno fatal error
+ */
+static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp,
+ struct ib_wc *wc)
+{
+ struct iwch_qp *qhp;
+ struct t3_cqe *rd_cqe;
+ int ret;
+
+ rd_cqe = cxio_next_cqe(&chp->cq);
+
+ if (!rd_cqe)
+ return 0;
+
+ qhp = get_qhp(rhp, CQE_QPID(*rd_cqe));
+ if (qhp) {
+ spin_lock(&qhp->lock);
+ ret = __iwch_poll_cq_one(rhp, chp, qhp, wc);
spin_unlock(&qhp->lock);
+ } else {
+ ret = __iwch_poll_cq_one(rhp, chp, NULL, wc);
+ }
return ret;
}