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ipv6: tcp: send consistent flowlabel in TIME_WAIT state

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After commit 1d13a96c74 ("ipv6: tcp: fix flowlabel value in ACK
messages"), we stored in tw_flowlabel the flowlabel, in the
case ACK packets needed to be sent on behalf of a TIME_WAIT socket.

We can use the same field so that RST packets sent from
TIME_WAIT state also use a consistent flowlabel.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florent Fourcot <florent.fourcot@wifirst.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-06-05 07:55:10 -07:00 committed by David S. Miller
parent 323a53c412
commit 50a8accf10
1 changed files with 2 additions and 0 deletions
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net/ipv6/tcp_ipv6.c
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@ -982,6 +982,8 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
oif = sk->sk_bound_dev_if;
if (sk_fullsock(sk))
trace_tcp_send_reset(sk, skb);
if (sk->sk_state == TCP_TIME_WAIT)
label = cpu_to_be32(inet_twsk(sk)->tw_flowlabel);
} else {
if (net->ipv6.sysctl.flowlabel_reflect & 2)
label = ip6_flowlabel(ipv6h);