SUNRPC: Move the UDP socket bufsize parameters to a private data structure

Move the socket-specific buffer size parameters for UDP sockets to a
private data structure maintained in net/sunrpc/xprtsock.c.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 4797a4608c07..b804381d5bee 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -151,6 +151,12 @@ struct sock_xprt {
          */
         struct work_struct      connect_worker;
         unsigned short          port;
+
+        /*
+         * UDP socket buffer size parameters
+         */
+        size_t                  rcvsize,
+                                sndsize;
 };
 
 /*
@@ -996,13 +1002,13 @@ static void xs_udp_do_set_buffer_size(struct rpc_xprt *xprt)
         struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
         struct sock *sk = transport->inet;
 
-        if (xprt->rcvsize) {
+        if (transport->rcvsize) {
                 sk->sk_userlocks |= SOCK_RCVBUF_LOCK;
-                sk->sk_rcvbuf = xprt->rcvsize * xprt->max_reqs *  2;
+                sk->sk_rcvbuf = transport->rcvsize * xprt->max_reqs * 2;
         }
-        if (xprt->sndsize) {
+        if (transport->sndsize) {
                 sk->sk_userlocks |= SOCK_SNDBUF_LOCK;
-                sk->sk_sndbuf = xprt->sndsize * xprt->max_reqs * 2;
+                sk->sk_sndbuf = transport->sndsize * xprt->max_reqs * 2;
                 sk->sk_write_space(sk);
         }
 }
@@ -1017,12 +1023,14 @@ static void xs_udp_do_set_buffer_size(struct rpc_xprt *xprt)
  */
 static void xs_udp_set_buffer_size(struct rpc_xprt *xprt, size_t sndsize, size_t rcvsize)
 {
-        xprt->sndsize = 0;
+        struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
+
+        transport->sndsize = 0;
         if (sndsize)
-                xprt->sndsize = sndsize + 1024;
-        xprt->rcvsize = 0;
+                transport->sndsize = sndsize + 1024;
+        transport->rcvsize = 0;
         if (rcvsize)
-                xprt->rcvsize = rcvsize + 1024;
+                transport->rcvsize = rcvsize + 1024;
 
         xs_udp_do_set_buffer_size(xprt);
 }