[PATCH v5 08/14] rpcrdma: Add RPCRDMA_HDRLEN_ERR

Chuck Lever
2016-03-01T18:06:29Z

Error headers are shorter than either RDMA_MSG or RDMA_NOMSG.

Since HDRLEN_MIN is already used in several other places that would
be annoying to change, add RPCRDMA_HDRLEN_ERR for the one or two
spots where the shorter length is needed.

Signed-off-by: Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Devesh Sharma <devesh.sharma-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
---
include/linux/sunrpc/rpc_rdma.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/linux/sunrpc/rpc_rdma.h b/include/linux/sunrpc/rpc_rdma.h
index f33c5a4..8c6d23c 100644
--- a/include/linux/sunrpc/rpc_rdma.h
+++ b/include/linux/sunrpc/rpc_rdma.h
@@ -102,6 +102,7 @@ struct rpcrdma_msg {
* Smallest RPC/RDMA header: rm_xid through rm_type, then rm_nochunks
*/
#define RPCRDMA_HDRLEN_MIN (sizeof(__be32) * 7)
+#define RPCRDMA_HDRLEN_ERR (sizeof(__be32) * 5)

enum rpcrdma_errcode {
ERR_VERS = 1,