[LLC]: allow datagram recvmsg
LLC receive is broken for SOCK_DGRAM.
If an application does recv() on a datagram socket and there
is no data present, don't return "not connected". Instead, just
do normal datagram semantics.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c
index 7465170..75c9b14 100644
--- a/net/llc/af_llc.c
+++ b/net/llc/af_llc.c
@@ -674,7 +674,7 @@
lock_sock(sk);
copied = -ENOTCONN;
- if (sk->sk_state == TCP_LISTEN)
+ if (unlikely(sk->sk_type == SOCK_STREAM && sk->sk_state == TCP_LISTEN))
goto out;
timeo = sock_rcvtimeo(sk, nonblock);
@@ -733,7 +733,7 @@
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
- if (sk->sk_state == TCP_CLOSE) {
+ if (sk->sk_type == SOCK_STREAM && sk->sk_state == TCP_CLOSE) {
if (!sock_flag(sk, SOCK_DONE)) {
/*
* This occurs when user tries to read