SUNRPC: Rename skb_reader_t and friends

Clean-up:  hch suggested that the RPC client shouldn't pollute the name
space used by the generic skb manipulation routines in net/core/skbuff.c.

Rename a couple of types in xdr.h to adhere to this convention.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/socklib.c b/net/sunrpc/socklib.c
index 9c40d67..634885b 100644
--- a/net/sunrpc/socklib.c
+++ b/net/sunrpc/socklib.c
@@ -24,7 +24,7 @@
  * Possibly called several times to iterate over an sk_buff and copy
  * data out of it.
  */
-size_t xdr_skb_read_bits(skb_reader_t *desc, void *to, size_t len)
+size_t xdr_skb_read_bits(struct xdr_skb_reader *desc, void *to, size_t len)
 {
 	if (len > desc->count)
 		len = desc->count;
@@ -43,7 +43,7 @@
  *
  * Same as skb_read_bits, but calculate a checksum at the same time.
  */
-static size_t xdr_skb_read_and_csum_bits(skb_reader_t *desc, void *to, size_t len)
+static size_t xdr_skb_read_and_csum_bits(struct xdr_skb_reader *desc, void *to, size_t len)
 {
 	unsigned int pos;
 	__wsum csum2;
@@ -66,7 +66,7 @@
  * @copy_actor: virtual method for copying data
  *
  */
-ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, skb_reader_t *desc, skb_read_actor_t copy_actor)
+ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct xdr_skb_reader *desc, xdr_skb_read_actor copy_actor)
 {
 	struct page	**ppage = xdr->pages;
 	unsigned int	len, pglen = xdr->page_len;
@@ -148,7 +148,7 @@
  */
 int csum_partial_copy_to_xdr(struct xdr_buf *xdr, struct sk_buff *skb)
 {
-	skb_reader_t	desc;
+	struct xdr_skb_reader	desc;
 
 	desc.skb = skb;
 	desc.offset = sizeof(struct udphdr);
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 450c350..ad61b3e 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -651,7 +651,7 @@
 	read_unlock(&sk->sk_callback_lock);
 }
 
-static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc)
+static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_reader *desc)
 {
 	struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
 	size_t len, used;
@@ -697,7 +697,7 @@
 	}
 }
 
-static inline void xs_tcp_read_xid(struct sock_xprt *transport, skb_reader_t *desc)
+static inline void xs_tcp_read_xid(struct sock_xprt *transport, struct xdr_skb_reader *desc)
 {
 	size_t len, used;
 	char *p;
@@ -717,7 +717,7 @@
 	xs_tcp_check_fraghdr(transport);
 }
 
-static inline void xs_tcp_read_request(struct rpc_xprt *xprt, skb_reader_t *desc)
+static inline void xs_tcp_read_request(struct rpc_xprt *xprt, struct xdr_skb_reader *desc)
 {
 	struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
 	struct rpc_rqst *req;
@@ -739,7 +739,7 @@
 	rcvbuf = &req->rq_private_buf;
 	len = desc->count;
 	if (len > transport->tcp_reclen - transport->tcp_offset) {
-		skb_reader_t my_desc;
+		struct xdr_skb_reader my_desc;
 
 		len = transport->tcp_reclen - transport->tcp_offset;
 		memcpy(&my_desc, desc, sizeof(my_desc));
@@ -795,7 +795,7 @@
 	xs_tcp_check_fraghdr(transport);
 }
 
-static inline void xs_tcp_read_discard(struct sock_xprt *transport, skb_reader_t *desc)
+static inline void xs_tcp_read_discard(struct sock_xprt *transport, struct xdr_skb_reader *desc)
 {
 	size_t len;
 
@@ -813,7 +813,7 @@
 {
 	struct rpc_xprt *xprt = rd_desc->arg.data;
 	struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
-	skb_reader_t desc = {
+	struct xdr_skb_reader desc = {
 		.skb	= skb,
 		.offset	= offset,
 		.count	= len,