[PATCH 5.9 385/757] ipvs: clear skb->tstamp in forwarding path

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From: Julian Anastasov <ja@xxxxxx>

[ Upstream commit 7980d2eabde82be86c5be18aa3d07e88ec13c6a1 ]

fq qdisc requires tstamp to be cleared in forwarding path

Reported-by: Evgeny B <abt-admin@xxxxxxx>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209427
Suggested-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
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@xxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 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 b00866d777fe0..d2e5a8f644b80 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -609,6 +609,8 @@ static inline int ip_vs_tunnel_xmit_prepare(struct sk_buff *skb,
 	if (ret == NF_ACCEPT) {
 		nf_reset_ct(skb);
 		skb_forward_csum(skb);
+		if (skb->dev)
+			skb->tstamp = 0;
 	}
 	return ret;
 }
@@ -649,6 +651,8 @@ 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
@@ -669,6 +673,8 @@ 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






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