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ipv6: tcp: send consistent autoflowlabel in RST packets

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Blamed commit added a txhash parameter to tcp_v6_send_response()
but forgot to update tcp_v6_send_reset() accordingly.

Fixes: aa51b80e1a ("ipv6: tcp: send consistent autoflowlabel in SYN_RECV state")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220922165036.1795862-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2022-09-22 09:50:36 -07:00 committed by Jakub Kicinski
parent 99d01d7481
commit 9258b8b1be
1 changed files with 4 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
net/ipv6/tcp_ipv6.c
View file

@ -1001,6 +1001,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
__be32 label = 0;
u32 priority = 0;
struct net *net;
u32 txhash = 0;
int oif = 0;
if (th->rst)
@ -1073,10 +1074,12 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
if (np->repflow)
label = ip6_flowlabel(ipv6h);
priority = sk->sk_priority;
txhash = sk->sk_hash;
}
if (sk->sk_state == TCP_TIME_WAIT) {
label = cpu_to_be32(inet_twsk(sk)->tw_flowlabel);
priority = inet_twsk(sk)->tw_priority;
txhash = inet_twsk(sk)->tw_txhash;
}
} else {
if (net->ipv6.sysctl.flowlabel_reflect & FLOWLABEL_REFLECT_TCP_RESET)
@ -1084,7 +1087,7 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
}
tcp_v6_send_response(sk, skb, seq, ack_seq, 0, 0, 0, oif, key, 1,
ipv6_get_dsfield(ipv6h), label, priority, 0);
ipv6_get_dsfield(ipv6h), label, priority, txhash);
#ifdef CONFIG_TCP_MD5SIG
out: