RPC/RDMA: suppress retransmit on RPC/RDMA clients.

An RPC/RDMA client cannot retransmit on an unbroken connection,
doing so violates its flow control with the server.

Signed-off-by: Tom Talpey <talpey@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 05b7898e1f4b..2db2344d487e 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -181,6 +181,7 @@ struct rpcrdma_req {
         size_t          rl_size;        /* actual length of buffer */
         unsigned int    rl_niovs;       /* 0, 2 or 4 */
         unsigned int    rl_nchunks;     /* non-zero if chunks */
+        unsigned int    rl_connect_cookie;      /* retry detection */
         struct rpcrdma_buffer *rl_buffer; /* home base for this structure */
         struct rpcrdma_rep      *rl_reply;/* holder for reply buffer */
         struct rpcrdma_mr_seg rl_segments[RPCRDMA_MAX_SEGS];/* chunk segments */