diff options
| author | Allan Stephens <Allan.Stephens@windriver.com> | 2011-02-23 14:52:14 -0500 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-03-13 16:35:16 -0400 |
| commit | 71092ea122062012f8e4b7fb2f9a747212d1479c (patch) | |
| tree | 16fe00fb40999810cea58cbe1bcbd0caa3cdabd9 /net/tipc/socket.c | |
| parent | f1379173326de4c745c4f610501486e4f3bd9248 (diff) | |
| download | lwn-71092ea122062012f8e4b7fb2f9a747212d1479c.tar.gz lwn-71092ea122062012f8e4b7fb2f9a747212d1479c.zip | |
tipc: Add support for SO_RCVTIMEO socket option
Adds support for the SO_RCVTIMEO socket option to TIPC's socket
receive routines.
Thanks go out to Raj Hegde <rajenhegde@yahoo.ca> for his contribution
to the development and testing this enhancement.
Signed-off-by: Allan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'net/tipc/socket.c')
| -rw-r--r-- | net/tipc/socket.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index d45a294f47e9..29d94d53198d 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -58,6 +58,9 @@ struct tipc_sock { #define tipc_sk(sk) ((struct tipc_sock *)(sk)) #define tipc_sk_port(sk) ((struct tipc_port *)(tipc_sk(sk)->p)) +#define tipc_rx_ready(sock) (!skb_queue_empty(&sock->sk->sk_receive_queue) || \ + (sock->state == SS_DISCONNECTING)) + static int backlog_rcv(struct sock *sk, struct sk_buff *skb); static u32 dispatch(struct tipc_port *tport, struct sk_buff *buf); static void wakeupdispatch(struct tipc_port *tport); @@ -911,6 +914,7 @@ static int recv_msg(struct kiocb *iocb, struct socket *sock, struct tipc_port *tport = tipc_sk_port(sk); struct sk_buff *buf; struct tipc_msg *msg; + long timeout; unsigned int sz; u32 err; int res; @@ -927,6 +931,7 @@ static int recv_msg(struct kiocb *iocb, struct socket *sock, goto exit; } + timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); restart: /* Look for a message in receive queue; wait if necessary */ @@ -936,17 +941,15 @@ restart: res = -ENOTCONN; goto exit; } - if (flags & MSG_DONTWAIT) { - res = -EWOULDBLOCK; + if (timeout <= 0L) { + res = timeout ? timeout : -EWOULDBLOCK; goto exit; } release_sock(sk); - res = wait_event_interruptible(*sk_sleep(sk), - (!skb_queue_empty(&sk->sk_receive_queue) || - (sock->state == SS_DISCONNECTING))); + timeout = wait_event_interruptible_timeout(*sk_sleep(sk), + tipc_rx_ready(sock), + timeout); lock_sock(sk); - if (res) - goto exit; } /* Look at first message in receive queue */ @@ -1034,6 +1037,7 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock, struct tipc_port *tport = tipc_sk_port(sk); struct sk_buff *buf; struct tipc_msg *msg; + long timeout; unsigned int sz; int sz_to_copy, target, needed; int sz_copied = 0; @@ -1054,7 +1058,7 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock, } target = sock_rcvlowat(sk, flags & MSG_WAITALL, buf_len); - + timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); restart: /* Look for a message in receive queue; wait if necessary */ @@ -1064,17 +1068,15 @@ restart: res = -ENOTCONN; goto exit; } - if (flags & MSG_DONTWAIT) { - res = -EWOULDBLOCK; + if (timeout <= 0L) { + res = timeout ? timeout : -EWOULDBLOCK; goto exit; } release_sock(sk); - res = wait_event_interruptible(*sk_sleep(sk), - (!skb_queue_empty(&sk->sk_receive_queue) || - (sock->state == SS_DISCONNECTING))); + timeout = wait_event_interruptible_timeout(*sk_sleep(sk), + tipc_rx_ready(sock), + timeout); lock_sock(sk); - if (res) - goto exit; } /* Look at first message in receive queue */ |