RPC/RDMA: add data types and new FRMR memory registration enum.

Internal RPC/RDMA structure updates in preparation for FRMR support.

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

2 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/sunrpc/xprtrdma.h b/include/linux/sunrpc/xprtrdma.h
index 4de56b1d372b..55a5d92ca1e2 100644
--- a/include/linux/sunrpc/xprtrdma.h
+++ b/include/linux/sunrpc/xprtrdma.h
@@ -78,6 +78,7 @@ enum rpcrdma_memreg {
         RPCRDMA_MEMWINDOWS,
         RPCRDMA_MEMWINDOWS_ASYNC,
         RPCRDMA_MTHCAFMR,
+        RPCRDMA_FRMR,
         RPCRDMA_ALLPHYSICAL,
         RPCRDMA_LAST
 };
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 2427822f8bd4..05b7898e1f4b 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -58,6 +58,8 @@ 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 +158,10 @@ 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;
@@ -198,7 +204,7 @@ 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;