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-rw-r--r--net/sunrpc/xprtsock.c49
1 files changed, 29 insertions, 20 deletions
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 417bd91ea53e..c737acf61c75 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -147,6 +147,14 @@ struct sock_xprt {
tcp_flags;
};
+/*
+ * TCP receive state flags
+ */
+#define TCP_RCV_LAST_FRAG (1UL << 0)
+#define TCP_RCV_COPY_FRAGHDR (1UL << 1)
+#define TCP_RCV_COPY_XID (1UL << 2)
+#define TCP_RCV_COPY_DATA (1UL << 3)
+
static void xs_format_peer_addresses(struct rpc_xprt *xprt)
{
struct sockaddr_in *addr = (struct sockaddr_in *) &xprt->addr;
@@ -653,12 +661,12 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc
transport->tcp_reclen = ntohl(transport->tcp_fraghdr);
if (transport->tcp_reclen & RPC_LAST_STREAM_FRAGMENT)
- transport->tcp_flags |= XPRT_LAST_FRAG;
+ transport->tcp_flags |= TCP_RCV_LAST_FRAG;
else
- transport->tcp_flags &= ~XPRT_LAST_FRAG;
+ transport->tcp_flags &= ~TCP_RCV_LAST_FRAG;
transport->tcp_reclen &= RPC_FRAGMENT_SIZE_MASK;
- transport->tcp_flags &= ~XPRT_COPY_RECM;
+ transport->tcp_flags &= ~TCP_RCV_COPY_FRAGHDR;
transport->tcp_offset = 0;
/* Sanity check of the record length */
@@ -674,11 +682,11 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, skb_reader_t *desc
static void xs_tcp_check_fraghdr(struct sock_xprt *transport)
{
if (transport->tcp_offset == transport->tcp_reclen) {
- transport->tcp_flags |= XPRT_COPY_RECM;
+ transport->tcp_flags |= TCP_RCV_COPY_FRAGHDR;
transport->tcp_offset = 0;
- if (transport->tcp_flags & XPRT_LAST_FRAG) {
- transport->tcp_flags &= ~XPRT_COPY_DATA;
- transport->tcp_flags |= XPRT_COPY_XID;
+ if (transport->tcp_flags & TCP_RCV_LAST_FRAG) {
+ transport->tcp_flags &= ~TCP_RCV_COPY_DATA;
+ transport->tcp_flags |= TCP_RCV_COPY_XID;
transport->tcp_copied = 0;
}
}
@@ -696,8 +704,8 @@ static inline void xs_tcp_read_xid(struct sock_xprt *transport, skb_reader_t *de
transport->tcp_offset += used;
if (used != len)
return;
- transport->tcp_flags &= ~XPRT_COPY_XID;
- transport->tcp_flags |= XPRT_COPY_DATA;
+ transport->tcp_flags &= ~TCP_RCV_COPY_XID;
+ transport->tcp_flags |= TCP_RCV_COPY_DATA;
transport->tcp_copied = 4;
dprintk("RPC: reading reply for XID %08x\n",
ntohl(transport->tcp_xid));
@@ -716,7 +724,7 @@ static inline void xs_tcp_read_request(struct rpc_xprt *xprt, skb_reader_t *desc
spin_lock(&xprt->transport_lock);
req = xprt_lookup_rqst(xprt, transport->tcp_xid);
if (!req) {
- transport->tcp_flags &= ~XPRT_COPY_DATA;
+ transport->tcp_flags &= ~TCP_RCV_COPY_DATA;
dprintk("RPC: XID %08x request not found!\n",
ntohl(transport->tcp_xid));
spin_unlock(&xprt->transport_lock);
@@ -747,13 +755,13 @@ static inline void xs_tcp_read_request(struct rpc_xprt *xprt, skb_reader_t *desc
/* Error when copying to the receive buffer,
* usually because we weren't able to allocate
* additional buffer pages. All we can do now
- * is turn off XPRT_COPY_DATA, so the request
+ * is turn off TCP_RCV_COPY_DATA, so the request
* will not receive any additional updates,
* and time out.
* Any remaining data from this record will
* be discarded.
*/
- transport->tcp_flags &= ~XPRT_COPY_DATA;
+ transport->tcp_flags &= ~TCP_RCV_COPY_DATA;
dprintk("RPC: XID %08x truncated request\n",
ntohl(transport->tcp_xid));
dprintk("RPC: xprt = %p, tcp_copied = %lu, tcp_offset = %u, tcp_reclen = %u\n",
@@ -769,14 +777,14 @@ static inline void xs_tcp_read_request(struct rpc_xprt *xprt, skb_reader_t *desc
transport->tcp_reclen);
if (transport->tcp_copied == req->rq_private_buf.buflen)
- transport->tcp_flags &= ~XPRT_COPY_DATA;
+ transport->tcp_flags &= ~TCP_RCV_COPY_DATA;
else if (transport->tcp_offset == transport->tcp_reclen) {
- if (transport->tcp_flags & XPRT_LAST_FRAG)
- transport->tcp_flags &= ~XPRT_COPY_DATA;
+ if (transport->tcp_flags & TCP_RCV_LAST_FRAG)
+ transport->tcp_flags &= ~TCP_RCV_COPY_DATA;
}
out:
- if (!(transport->tcp_flags & XPRT_COPY_DATA))
+ if (!(transport->tcp_flags & TCP_RCV_COPY_DATA))
xprt_complete_rqst(req->rq_task, transport->tcp_copied);
spin_unlock(&xprt->transport_lock);
xs_tcp_check_fraghdr(transport);
@@ -810,17 +818,17 @@ static int xs_tcp_data_recv(read_descriptor_t *rd_desc, struct sk_buff *skb, uns
do {
/* Read in a new fragment marker if necessary */
/* Can we ever really expect to get completely empty fragments? */
- if (transport->tcp_flags & XPRT_COPY_RECM) {
+ if (transport->tcp_flags & TCP_RCV_COPY_FRAGHDR) {
xs_tcp_read_fraghdr(xprt, &desc);
continue;
}
/* Read in the xid if necessary */
- if (transport->tcp_flags & XPRT_COPY_XID) {
+ if (transport->tcp_flags & TCP_RCV_COPY_XID) {
xs_tcp_read_xid(transport, &desc);
continue;
}
/* Read in the request data */
- if (transport->tcp_flags & XPRT_COPY_DATA) {
+ if (transport->tcp_flags & TCP_RCV_COPY_DATA) {
xs_tcp_read_request(xprt, &desc);
continue;
}
@@ -886,7 +894,8 @@ static void xs_tcp_state_change(struct sock *sk)
transport->tcp_offset = 0;
transport->tcp_reclen = 0;
transport->tcp_copied = 0;
- transport->tcp_flags = XPRT_COPY_RECM | XPRT_COPY_XID;
+ transport->tcp_flags =
+ TCP_RCV_COPY_FRAGHDR | TCP_RCV_COPY_XID;
xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
xprt_wake_pending_tasks(xprt, 0);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 09:04:15 +0000