1 files changed, 16 insertions, 1 deletions

diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 2427822f8bd4..c7a7eba991bc 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -51,6 +51,9 @@
 #include <linux/sunrpc/rpc_rdma.h>      /* RPC/RDMA protocol */
 #include <linux/sunrpc/xprtrdma.h>      /* xprt parameters */
 
+#define RDMA_RESOLVE_TIMEOUT    (5000)  /* 5 seconds */
+#define RDMA_CONNECT_RETRY_MAX  (2)     /* retries if no listener backlog */
+
 /*
  * Interface Adapter -- one per transport instance
  */
@@ -58,6 +61,8 @@ struct rpcrdma_ia {
         struct rdma_cm_id       *ri_id;
         struct ib_pd            *ri_pd;
         struct ib_mr            *ri_bind_mem;
+        u32                     ri_dma_lkey;
+        int                     ri_have_dma_lkey;
         struct completion       ri_done;
         int                     ri_async_rc;
         enum rpcrdma_memreg     ri_memreg_strategy;
@@ -156,6 +161,10 @@ struct rpcrdma_mr_seg {		/* chunk descriptors */
                         union {
                                 struct ib_mw    *mw;
                                 struct ib_fmr   *fmr;
+                                struct {
+                                        struct ib_fast_reg_page_list *fr_pgl;
+                                        struct ib_mr *fr_mr;
+                                } frmr;
                         } r;
                         struct list_head mw_list;
                 } *rl_mw;
@@ -175,6 +184,7 @@ 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 */
@@ -198,7 +208,7 @@ struct rpcrdma_buffer {
         atomic_t        rb_credits;     /* most recent server credits */
         unsigned long   rb_cwndscale;   /* cached framework rpc_cwndscale */
         int             rb_max_requests;/* client max requests */
-        struct list_head rb_mws;        /* optional memory windows/fmrs */
+        struct list_head rb_mws;        /* optional memory windows/fmrs/frmrs */
         int             rb_send_index;
         struct rpcrdma_req      **rb_send_bufs;
         int             rb_recv_index;
@@ -273,6 +283,11 @@ struct rpcrdma_xprt {
 #define rpcx_to_rdmax(x) container_of(x, struct rpcrdma_xprt, xprt)
 #define rpcx_to_rdmad(x) (rpcx_to_rdmax(x)->rx_data)
 
+/* Setting this to 0 ensures interoperability with early servers.
+ * Setting this to 1 enhances certain unaligned read/write performance.
+ * Default is 0, see sysctl entry and rpc_rdma.c rpcrdma_convert_iovs() */
+extern int xprt_rdma_pad_optimize;
+
 /*
  * Interface Adapter calls - xprtrdma/verbs.c
  */