diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2022-03-02 20:55:31 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-03 15:38:48 +0100 |
| commit | de799101519aad23c6096041ba2744d7b5517e6a (patch) | |
| tree | 01f4d21c7b918eb2d15a124ea581ef7a0671e935 /net/ipv4/ip_forward.c | |
| parent | net: Add skb->mono_delivery_time to distinguish mono delivery_time from (rcv)... (diff) | |
| download | linux-de799101519aad23c6096041ba2744d7b5517e6a.tar.xz linux-de799101519aad23c6096041ba2744d7b5517e6a.zip | |
net: Add skb_clear_tstamp() to keep the mono delivery_time
Right now, skb->tstamp is reset to 0 whenever the skb is forwarded.
If skb->tstamp has the mono delivery_time, clearing it can hurt
the performance when it finally transmits out to fq@phy-dev.
The earlier patch added a skb->mono_delivery_time bit to
flag the skb->tstamp carrying the mono delivery_time.
This patch adds skb_clear_tstamp() helper which keeps
the mono delivery_time and clears everything else.
The delivery_time clearing will be postponed until the stack knows the
skb will be delivered locally. It will be done in a latter patch.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_forward.c')
| -rw-r--r-- | net/ipv4/ip_forward.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index 00ec819f949b..92ba3350274b 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c @@ -79,7 +79,7 @@ static int ip_forward_finish(struct net *net, struct sock *sk, struct sk_buff *s if (unlikely(opt->optlen)) ip_forward_options(skb); - skb->tstamp = 0; + skb_clear_tstamp(skb); return dst_output(net, sk, skb); } |