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Diffstat (limited to 'net/sunrpc/xprtsock.c')
-rw-r--r--net/sunrpc/xprtsock.c31
1 files changed, 25 insertions, 6 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 8975c10..a48df14 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -270,12 +270,13 @@ struct sock_xprt {
#define TCP_RCV_COPY_FRAGHDR (1UL << 1)
#define TCP_RCV_COPY_XID (1UL << 2)
#define TCP_RCV_COPY_DATA (1UL << 3)
-#define TCP_RCV_COPY_CALLDIR (1UL << 4)
+#define TCP_RCV_READ_CALLDIR (1UL << 4)
+#define TCP_RCV_COPY_CALLDIR (1UL << 5)
/*
* TCP RPC flags
*/
-#define TCP_RPC_REPLY (1UL << 5)
+#define TCP_RPC_REPLY (1UL << 6)
static inline struct sockaddr *xs_addr(struct rpc_xprt *xprt)
{
@@ -997,7 +998,7 @@ static inline void xs_tcp_read_xid(struct sock_xprt *transport, struct xdr_skb_r
if (used != len)
return;
transport->tcp_flags &= ~TCP_RCV_COPY_XID;
- transport->tcp_flags |= TCP_RCV_COPY_CALLDIR;
+ transport->tcp_flags |= TCP_RCV_READ_CALLDIR;
transport->tcp_copied = 4;
dprintk("RPC: reading %s XID %08x\n",
(transport->tcp_flags & TCP_RPC_REPLY) ? "reply for"
@@ -1026,9 +1027,13 @@ static inline void xs_tcp_read_calldir(struct sock_xprt *transport,
transport->tcp_offset += used;
if (used != len)
return;
- transport->tcp_flags &= ~TCP_RCV_COPY_CALLDIR;
+ transport->tcp_flags &= ~TCP_RCV_READ_CALLDIR;
+ transport->tcp_flags |= TCP_RCV_COPY_CALLDIR;
transport->tcp_flags |= TCP_RCV_COPY_DATA;
- transport->tcp_copied += 4;
+ /*
+ * We don't yet have the XDR buffer, so we will write the calldir
+ * out after we get the buffer from the 'struct rpc_rqst'
+ */
if (ntohl(calldir) == RPC_REPLY)
transport->tcp_flags |= TCP_RPC_REPLY;
else
@@ -1059,6 +1064,20 @@ static inline void xs_tcp_read_request(struct rpc_xprt *xprt, struct xdr_skb_rea
}
rcvbuf = &req->rq_private_buf;
+
+ if (transport->tcp_flags & TCP_RCV_COPY_CALLDIR) {
+ /*
+ * Save the RPC direction in the XDR buffer
+ */
+ __be32 calldir = transport->tcp_flags & TCP_RPC_REPLY ?
+ htonl(RPC_REPLY) : 0;
+
+ memcpy(rcvbuf->head[0].iov_base + transport->tcp_copied,
+ &calldir, sizeof(calldir));
+ transport->tcp_copied += sizeof(calldir);
+ transport->tcp_flags &= ~TCP_RCV_COPY_CALLDIR;
+ }
+
len = desc->count;
if (len > transport->tcp_reclen - transport->tcp_offset) {
struct xdr_skb_reader my_desc;
@@ -1156,7 +1175,7 @@ static int xs_tcp_data_recv(read_descriptor_t *rd_desc, struct sk_buff *skb, uns
continue;
}
/* Read in the call/reply flag */
- if (transport->tcp_flags & TCP_RCV_COPY_CALLDIR) {
+ if (transport->tcp_flags & TCP_RCV_READ_CALLDIR) {
xs_tcp_read_calldir(transport, &desc);
continue;
}