IB/mad: Report number of times a mad was retried
To allow ULPs to tune timeout values and capture retry statistics,
report the number of times that a mad send operation was retried.
For RMPP mads, report the total number of times that the any portion
(send window) of the send operation was retried.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 8ec3799..7228c05 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -230,7 +230,9 @@
* @seg_count: The number of RMPP segments allocated for this send.
* @seg_size: Size of each RMPP segment.
* @timeout_ms: Time to wait for a response.
- * @retries: Number of times to retry a request for a response.
+ * @retries: Number of times to retry a request for a response. For MADs
+ * using RMPP, this applies per window. On completion, returns the number
+ * of retries needed to complete the transfer.
*
* Users are responsible for initializing the MAD buffer itself, with the
* exception of any RMPP header. Additional segment buffer space allocated