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-rw-r--r--net/rds/rdma_transport.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/rds/rdma_transport.h b/net/rds/rdma_transport.h
index 200d3134aaae..bfafd4a6d827 100644
--- a/net/rds/rdma_transport.h
+++ b/net/rds/rdma_transport.h
@@ -11,6 +11,12 @@
 
 #define RDS_RDMA_RESOLVE_TIMEOUT_MS     5000
 
+/* Below reject reason is for legacy interoperability issue with non-linux
+ * RDS endpoints where older version incompatibility is conveyed via value 1.
+ * For future version(s), proper encoded reject reason should be be used.
+ */
+#define RDS_RDMA_REJ_INCOMPAT		1
+
 int rds_rdma_conn_connect(struct rds_connection *conn);
 int rds_rdma_cm_event_handler(struct rdma_cm_id *cm_id,
 			      struct rdma_cm_event *event);