diff options
| author | Antoine Tenart <atenart@kernel.org> | 2023-05-23 18:14:52 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2023-05-25 13:20:45 +0200 |
| commit | c0a8966e2bc7d31f77a7246947ebc09c1ff06066 (patch) | |
| tree | 52fd9e64f7a2566975c59c826c066f4b379d3ec2 /net/ipv4/ip_output.c | |
| parent | 4fbfde4e272065943cbcf2d016f0679456cb4f75 (diff) | |
net: ipv4: use consistent txhash in TIME_WAIT and SYN_RECV
When using IPv4/TCP, skb->hash comes from sk->sk_txhash except in
TIME_WAIT and SYN_RECV where it's not set in the reply skb from
ip_send_unicast_reply. Those packets will have a mismatched hash with
others from the same flow as their hashes will be 0. IPv6 does not have
the same issue as the hash is set from the socket txhash in those cases.
This commits sets the hash in the reply skb from ip_send_unicast_reply,
which makes the IPv4 code behaving like IPv6.
Signed-off-by: Antoine Tenart <atenart@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv4/ip_output.c')
| -rw-r--r-- | net/ipv4/ip_output.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 553c740a6bfb..244fb9365d87 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -1570,7 +1570,7 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb, const struct ip_options *sopt, __be32 daddr, __be32 saddr, const struct ip_reply_arg *arg, - unsigned int len, u64 transmit_time) + unsigned int len, u64 transmit_time, u32 txhash) { struct ip_options_data replyopts; struct ipcm_cookie ipc; @@ -1633,6 +1633,8 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb, arg->csum)); nskb->ip_summed = CHECKSUM_NONE; nskb->mono_delivery_time = !!transmit_time; + if (txhash) + skb_set_hash(nskb, txhash, PKT_HASH_TYPE_L4); ip_push_pending_frames(sk, &fl4); } out: |