nfsd4/rpc: move backchannel create logic into rpc code

Also simplify the logic a bit.

Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Trond Myklebust <trondmy@primarydata.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 173c5dd2d751..b33721d41adc 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -446,7 +446,7 @@ out_no_rpciod:
         return ERR_PTR(err);
 }
 
-struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
+static struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
                                         struct rpc_xprt *xprt)
 {
         struct rpc_clnt *clnt = NULL;
@@ -484,7 +484,6 @@ struct rpc_clnt *rpc_create_xprt(struct rpc_create_args *args,
 
         return clnt;
 }
-EXPORT_SYMBOL_GPL(rpc_create_xprt);
 
 /**
  * rpc_create - create an RPC client and transport with one call
@@ -510,6 +509,15 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
         };
         char servername[48];
 
+        if (args->bc_xprt) {
+                WARN_ON(args->protocol != XPRT_TRANSPORT_BC_TCP);
+                xprt = args->bc_xprt->xpt_bc_xprt;
+                if (xprt) {
+                        xprt_get(xprt);
+                        return rpc_create_xprt(args, xprt);
+                }
+        }
+
         if (args->flags & RPC_CLNT_CREATE_INFINITE_SLOTS)
                 xprtargs.flags |= XPRT_CREATE_INFINITE_SLOTS;
         if (args->flags & RPC_CLNT_CREATE_NO_IDLE_TIMEOUT)