net/rds: Declare SO_RDS_TRANSPORT and RDS_TRANS_* constants in uapi/linux/rds.h
User space applications that desire to explicitly select the
underlying transport for a PF_RDS socket may do so by using the
SO_RDS_TRANSPORT socket option at the SOL_RDS level before bind().
The integer argument provided to the socket option would be one
of the RDS_TRANS_* values, e.g., RDS_TRANS_TCP. This commit exports
the constant values need by such applications via <linux/rds.h>
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/uapi/linux/rds.h b/include/uapi/linux/rds.h
index 9195095..0f9265c 100644
--- a/include/uapi/linux/rds.h
+++ b/include/uapi/linux/rds.h
@@ -38,6 +38,8 @@
#define RDS_IB_ABI_VERSION 0x301
+#define SOL_RDS 276
+
/*
* setsockopt/getsockopt for SOL_RDS
*/
@@ -48,6 +50,14 @@
#define RDS_RECVERR 5
#define RDS_CONG_MONITOR 6
#define RDS_GET_MR_FOR_DEST 7
+#define SO_RDS_TRANSPORT 8
+
+/* supported values for SO_RDS_TRANSPORT */
+#define RDS_TRANS_IB 0
+#define RDS_TRANS_IWARP 1
+#define RDS_TRANS_TCP 2
+#define RDS_TRANS_COUNT 3
+#define RDS_TRANS_NONE (~0)
/*
* Control message types for SOL_RDS.