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-rw-r--r--net/tipc/socket.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 094cfdc1e2b6..89d6dc0f456d 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1319,6 +1319,7 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen)
tsk->conn_type = dest->addr.name.name.type;
tsk->conn_instance = dest->addr.name.name.instance;
}
+ msg_set_syn(hdr, 1);
}
seq = &dest->addr.nameseq;
@@ -1478,6 +1479,7 @@ static void tipc_sk_finish_conn(struct tipc_sock *tsk, u32 peer_port,
struct net *net = sock_net(sk);
struct tipc_msg *msg = &tsk->phdr;
+ msg_set_syn(msg, 0);
msg_set_destnode(msg, peer_node);
msg_set_destport(msg, peer_port);
msg_set_type(msg, TIPC_CONN_MSG);
@@ -2006,6 +2008,9 @@ static bool tipc_sk_filter_connect(struct tipc_sock *tsk, struct sk_buff *skb)
return false;
case TIPC_LISTEN:
/* Accept only SYN message */
+ if (!msg_is_syn(hdr) &&
+ tipc_node_get_capabilities(net, onode) & TIPC_SYN_BIT)
+ return false;
if (!con_msg && !err)
return true;
return false;