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path: root/drivers/infiniband/hw/mlx4/cq.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx4/cq.c')
-rw-r--r--drivers/infiniband/hw/mlx4/cq.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 73b3a713258..d5e60f44ba5 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -33,6 +33,7 @@
#include <linux/mlx4/cq.h>
#include <linux/mlx4/qp.h>
+#include <linux/mlx4/srq.h>
#include <linux/slab.h>
#include "mlx4_ib.h"
@@ -585,6 +586,7 @@ static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq,
struct mlx4_qp *mqp;
struct mlx4_ib_wq *wq;
struct mlx4_ib_srq *srq;
+ struct mlx4_srq *msrq = NULL;
int is_send;
int is_error;
u32 g_mlpath_rqpn;
@@ -653,6 +655,20 @@ repoll:
wc->qp = &(*cur_qp)->ibqp;
+ if (wc->qp->qp_type == IB_QPT_XRC_TGT) {
+ u32 srq_num;
+ g_mlpath_rqpn = be32_to_cpu(cqe->g_mlpath_rqpn);
+ srq_num = g_mlpath_rqpn & 0xffffff;
+ /* SRQ is also in the radix tree */
+ msrq = mlx4_srq_lookup(to_mdev(cq->ibcq.device)->dev,
+ srq_num);
+ if (unlikely(!msrq)) {
+ pr_warn("CQ %06x with entry for unknown SRQN %06x\n",
+ cq->mcq.cqn, srq_num);
+ return -EINVAL;
+ }
+ }
+
if (is_send) {
wq = &(*cur_qp)->sq;
if (!(*cur_qp)->sq_signal_bits) {
@@ -666,6 +682,11 @@ repoll:
wqe_ctr = be16_to_cpu(cqe->wqe_index);
wc->wr_id = srq->wrid[wqe_ctr];
mlx4_ib_free_srq_wqe(srq, wqe_ctr);
+ } else if (msrq) {
+ srq = to_mibsrq(msrq);
+ wqe_ctr = be16_to_cpu(cqe->wqe_index);
+ wc->wr_id = srq->wrid[wqe_ctr];
+ mlx4_ib_free_srq_wqe(srq, wqe_ctr);
} else {
wq = &(*cur_qp)->rq;
tail = wq->tail & (wq->wqe_cnt - 1);