tcp: accept RST without ACK flag

[karo-tx-linux.git] / net / ipv4 / tcp_input.c

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index a28e4db8a952b15cc2f06578f12acbe6353c162a..18f97ca76b00223b25d0f6faed8a829c45fb95c8 100644 (file)
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -5543,7 +5543,7 @@ slow_path:
        if (len < (th->doff << 2) || tcp_checksum_complete_user(sk, skb))
                goto csum_error;
 
-       if (!th->ack)
+       if (!th->ack && !th->rst)
                goto discard;
 
        /*
@@ -5988,7 +5988,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
                        goto discard;
        }
 
-       if (!th->ack)
+       if (!th->ack && !th->rst)
                goto discard;
 
        if (!tcp_validate_incoming(sk, skb, th, 0))