AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

tipc: don't send FIN message from connectionless socket

Browse Source 
In commit 6f00089c73 ("tipc: remove SS_DISCONNECTING state") the
check for socket type is in the wrong place, causing a closing socket
to always send out a FIN message even when the socket was never
connected. This is normally harmless, since the destination node for
such messages most often is zero, and the message will be dropped, but
it is still a wrong and confusing behavior.

We fix this in this commit.

Reviewed-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Paul Maloy 2016-12-22 07:22:29 -05:00 committed by David S. Miller
parent e252536068
commit 693c56491f
1 changed files with 13 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
net/tipc/socket.c
View File

@ -441,7 +441,8 @@ static void __tipc_shutdown(struct socket *sock, int error)
while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) {
if (TIPC_SKB_CB(skb)->bytes_read) {
kfree_skb(skb);
} else {
continue;
}
if (!tipc_sk_type_connectionless(sk) &&
sk->sk_state != TIPC_DISCONNECTING) {
tipc_set_sk_state(sk, TIPC_DISCONNECTING);
@ -449,7 +450,10 @@ static void __tipc_shutdown(struct socket *sock, int error)
}
tipc_sk_respond(sk, skb, error);
}
}
if (tipc_sk_type_connectionless(sk))
return;
if (sk->sk_state != TIPC_DISCONNECTING) {
skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE,
TIPC_CONN_MSG, SHORT_H_SIZE, 0, dnode,
@ -457,12 +461,10 @@ static void __tipc_shutdown(struct socket *sock, int error)
tsk->portid, error);
if (skb)
tipc_node_xmit_skb(net, skb, dnode, tsk->portid);
if (!tipc_sk_type_connectionless(sk)) {
tipc_node_remove_conn(net, dnode, tsk->portid);
tipc_set_sk_state(sk, TIPC_DISCONNECTING);
}
}
}
/**
* tipc_release - destroy a TIPC socket