IB/srp: Report receive errors correctly

The IB spec does not guarantee that the opcode is available in error
completions.  Hence do not rely on it.  See also commit 948d1e889e5b
("IB/srp: Introduce srp_handle_qp_err()").

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: <stable@vger.kernel.org> # v3.8
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 4bf2f9feb59a..a88631918e85 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -1449,14 +1449,13 @@ static void srp_tl_err_work(struct work_struct *work)
                 srp_start_tl_fail_timers(target->rport);
 }
 
-static void srp_handle_qp_err(enum ib_wc_status wc_status,
-                              enum ib_wc_opcode wc_opcode,
+static void srp_handle_qp_err(enum ib_wc_status wc_status, bool send_err,
                               struct srp_target_port *target)
 {
         if (target->connected && !target->qp_in_error) {
                 shost_printk(KERN_ERR, target->scsi_host,
                              PFX "failed %s status %d\n",
-                             wc_opcode & IB_WC_RECV ? "receive" : "send",
+                             send_err ? "send" : "receive",
                              wc_status);
                 queue_work(system_long_wq, &target->tl_err_work);
         }
@@ -1473,7 +1472,7 @@ static void srp_recv_completion(struct ib_cq *cq, void *target_ptr)
                 if (likely(wc.status == IB_WC_SUCCESS)) {
                         srp_handle_recv(target, &wc);
                 } else {
-                        srp_handle_qp_err(wc.status, wc.opcode, target);
+                        srp_handle_qp_err(wc.status, false, target);
                 }
         }
 }
@@ -1489,7 +1488,7 @@ static void srp_send_completion(struct ib_cq *cq, void *target_ptr)
                         iu = (struct srp_iu *) (uintptr_t) wc.wr_id;
                         list_add(&iu->list, &target->free_tx);
                 } else {
-                        srp_handle_qp_err(wc.status, wc.opcode, target);
+                        srp_handle_qp_err(wc.status, true, target);
                 }
         }
 }