From e136d0926ef6a048f6e65b35263c0a9faae3abbe Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 5 Dec 2006 16:35:23 -0500 Subject: SUNRPC: Move TCP state flags into xprtsock.c Move "XPRT_LAST_FRAG" and friends from xprt.h into xprtsock.c, and rename them to use the naming scheme in use in xprtsock.c. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- net/sunrpc/xprtsock.c | 49 +++++++++++++++++++++++++++++-------------------- 1 file changed, 29 insertions(+), 20 deletions(-) (limited to 'net') diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 417bd91ea53..c737acf61c7 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); -- cgit v1.2.3