From: Steve Wise <sw...@opengridcomputing.com>
These are generated by HW in some error cases and need to be
silently discarded.
Signed-off-by: Steve Wise <sw...@opengridcomputing.com>
---
drivers/infiniband/hw/cxgb4/cq.c | 24 ++++++++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index 59f7601..55f7157 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -365,8 +365,14 @@ void c4iw_flush_hw_cq(struct c4iw_cq *chp)
if (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP) {
- /*
- * drop peer2peer RTR reads.
+ /* If we have reached here because of async
+ * event or other error, and have egress error
+ * then drop
+ */
+ if (CQE_TYPE(hw_cqe) == 1)
+ goto next_cqe;
+
+ /* drop peer2peer RTR reads.
*/
if (CQE_WRID_STAG(hw_cqe) == 1)
goto next_cqe;
@@ -511,8 +517,18 @@ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq,
struct t4_cqe *cqe,
*/
if (RQ_TYPE(hw_cqe) && (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP)) {
- /*
- * If this is an unsolicited read response, then the read
+ /* If we have reached here because of async
+ * event or other error, and have egress error
+ * then drop
+ */
+ if (CQE_TYPE(hw_cqe) == 1) {
+ if (CQE_STATUS(hw_cqe))
+ t4_set_wq_in_error(wq);
+ ret = -EAGAIN;
+ goto skip_cqe;
+ }
+
+ /* If this is an unsolicited read response, then the read
* was generated by the kernel driver as part of peer-2-peer
* connection setup. So ignore the completion.
*/
--
1.8.4
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