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-rw-r--r--include/rdma/ib_cm.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/rdma/ib_cm.h b/include/rdma/ib_cm.h
index 12243e80c70..a627c8682d2 100644
--- a/include/rdma/ib_cm.h
+++ b/include/rdma/ib_cm.h
@@ -477,12 +477,15 @@ int ib_send_cm_rej(struct ib_cm_id *cm_id,
const void *private_data,
u8 private_data_len);
+#define IB_CM_MRA_FLAG_DELAY 0x80 /* Send MRA only after a duplicate msg */
+
/**
* ib_send_cm_mra - Sends a message receipt acknowledgement to a connection
* message.
* @cm_id: Connection identifier associated with the connection message.
- * @service_timeout: The maximum time required for the sender to reply to
- * to the connection message.
+ * @service_timeout: The lower 5-bits specify the maximum time required for
+ * the sender to reply to to the connection message. The upper 3-bits
+ * specify additional control flags.
* @private_data: Optional user-defined private data sent with the
* message receipt acknowledgement.
* @private_data_len: Size of the private data buffer, in bytes.