xprtrdma: Allow Read list and Reply chunk simultaneously

[cascardo/linux.git] / net / sunrpc / xprtrdma / xprt_rdma.h

diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 4349e03..61999b6 100644 (file)
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -184,7 +184,9 @@ rdmab_to_msg(struct rpcrdma_regbuf *rb)
  */
 
 #define RPCRDMA_MAX_DATA_SEGS  ((1 * 1024 * 1024) / PAGE_SIZE)
-#define RPCRDMA_MAX_SEGS       (RPCRDMA_MAX_DATA_SEGS + 2) /* head+tail = 2 */
+
+/* data segments + head/tail for Call + head/tail for Reply */
+#define RPCRDMA_MAX_SEGS       (RPCRDMA_MAX_DATA_SEGS + 4)
 
 struct rpcrdma_buffer;
 
@@ -298,6 +300,7 @@ struct rpcrdma_req {
        struct rpcrdma_regbuf   *rl_rdmabuf;
        struct rpcrdma_regbuf   *rl_sendbuf;
        struct rpcrdma_mr_seg   rl_segments[RPCRDMA_MAX_SEGS];
+       struct rpcrdma_mr_seg   *rl_nextseg;
 
        struct ib_cqe           rl_cqe;
        struct list_head        rl_all;