llc: use limited socket backlog

[ Upstream commit 79545b681961d7001c1f4c3eb9ffb87bed4485db ]

Make llc adapt to the limited socket backlog change.

Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/llc/llc_conn.c b/net/llc/llc_conn.c
index c6bab39b018e..8f97546726b3 100644
--- a/net/llc/llc_conn.c
+++ b/net/llc/llc_conn.c
@@ -756,7 +756,8 @@ void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb)
         else {
                 dprintk("%s: adding to backlog...\n", __func__);
                 llc_set_backlog_type(skb, LLC_PACKET);
-                sk_add_backlog(sk, skb);
+                if (sk_add_backlog_limited(sk, skb))
+                        goto drop_unlock;
         }
 out:
         bh_unlock_sock(sk);