From: Florian Westphal Date: Tue, 17 Aug 2010 11:00:04 +0000 (+0000) Subject: tipc: add SO_RCVLOWAT support to stream socket receive path X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3720d40b201fe82dce1d8a64a31bfbf49c221771;p=linux-beck.git tipc: add SO_RCVLOWAT support to stream socket receive path Add support for the SO_RCVLOWAT socket option to TIPC's stream socket type. Signed-off-by: Florian Westphal Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 66e889ba48fd..69d0fd1f3920 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1026,9 +1026,8 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock, struct sk_buff *buf; struct tipc_msg *msg; unsigned int sz; - int sz_to_copy; + int sz_to_copy, target, needed; int sz_copied = 0; - int needed; char __user *crs = m->msg_iov->iov_base; unsigned char *buf_crs; u32 err; @@ -1050,6 +1049,8 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock, goto exit; } + target = sock_rcvlowat(sk, flags & MSG_WAITALL, buf_len); + restart: /* Look for a message in receive queue; wait if necessary */ @@ -1138,7 +1139,7 @@ restart: if ((sz_copied < buf_len) && /* didn't get all requested data */ (!skb_queue_empty(&sk->sk_receive_queue) || - (flags & MSG_WAITALL)) && /* and more is ready or required */ + (sz_copied < target)) && /* and more is ready or required */ (!(flags & MSG_PEEK)) && /* and aren't just peeking at data */ (!err)) /* and haven't reached a FIN */ goto restart;