[PATCH 4.19 124/264] ipvs: clear skb->tstamp in forwarding path

Greg Kroah-Hartman
2020-10-27T14:22:56Z

From: Julian Anastasov <ja@ssi.bg>

[ Upstream commit 7980d2eabde82be86c5be18aa3d07e88ec13c6a1 ]

fq qdisc requires tstamp to be cleared in forwarding path

Reported-by: Evgeny B <abt-admin@mail.ru>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209427
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: 8203e2d844d3 ("net: clear skb->tstamp in forwarding paths")
Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC")
Fixes: 80b14dee2bea ("net: Add a new socket option for a future transmit time.")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/ipvs/ip_vs_xmit.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 3f75cd947045e..11f7c546e57b3 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -586,6 +586,8 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
if (ret == NF_ACCEPT) {
nf_reset(skb);
skb_forward_csum(skb);
+ if (skb->dev)
+ skb->tstamp = 0;
}
return ret;
}
@@ -626,6 +628,8 @@ static inline int ip_vs_nat_send_or_cont(int pf, struct sk_buff *skb,

if (!local) {
skb_forward_csum(skb);
+ if (skb->dev)
+ skb->tstamp = 0;
NF_HOOK(pf, NF_INET_LOCAL_OUT, cp->ipvs->net, NULL, skb,
NULL, skb_dst(skb)->dev, dst_output);
} else
@@ -646,6 +650,8 @@ static inline int ip_vs_send_or_cont(int pf, struct sk_buff *skb,
if (!local) {
ip_vs_drop_early_demux_sk(skb);
skb_forward_csum(skb);
+ if (skb->dev)
+ skb->tstamp = 0;
NF_HOOK(pf, NF_INET_LOCAL_OUT, cp->ipvs->net, NULL, skb,
NULL, skb_dst(skb)->dev, dst_output);
} else
--
2.25.1