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| author |   Eric Dumazet <edumazet@google.com> | 2019-06-08 17:58:51 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-09 20:10:19 -0700 |
| commit | c67b85558ff20cb1ff20874461d12af456bee5d0 (patch) | |
| tree | 74fbc1da8b19b683614d91c512a4a73c04a873a9 /net/ipv4/tcp_minisocks.c | |
| parent | Merge branch 'RGMII-delays-for-SJA1105-DSA-driver' (diff) | |
| download | wireguard-linux-c67b85558ff20cb1ff20874461d12af456bee5d0.tar.xz wireguard-linux-c67b85558ff20cb1ff20874461d12af456bee5d0.zip | |
ipv6: tcp: send consistent autoflowlabel in TIME_WAIT state
In case autoflowlabel is in action, skb_get_hash_flowi6()
derives a non zero skb->hash to the flowlabel.
If skb->hash is zero, a flow dissection is performed.
Since all TCP skbs sent from ESTABLISH state inherit their
skb->hash from sk->sk_txhash, we better keep a copy
of sk->sk_txhash into the TIME_WAIT socket.
After this patch, ACK or RST packets sent on behalf of
a TIME_WAIT socket have the flowlabel that was previously
used by the flow.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_minisocks.c')
| -rw-r--r-- | net/ipv4/tcp_minisocks.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c index 7c35731816e2..11011e8386dc 100644 --- a/net/ipv4/tcp_minisocks.c +++ b/net/ipv4/tcp_minisocks.c @@ -283,6 +283,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo) tw->tw_v6_rcv_saddr = sk->sk_v6_rcv_saddr; tw->tw_tclass = np->tclass; tw->tw_flowlabel = be32_to_cpu(np->flow_label & IPV6_FLOWLABEL_MASK); + tw->tw_txhash = sk->sk_txhash; tw->tw_ipv6only = sk->sk_ipv6only; } #endif |