diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2022-03-02 11:55:31 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-03-03 14:38:48 +0000 |
| commit | de799101519aad23c6096041ba2744d7b5517e6a (patch) | |
| tree | 01f4d21c7b918eb2d15a124ea581ef7a0671e935 /net/netfilter/nf_flow_table_ip.c | |
| parent | a1ac9c8acec1605c6b43af418f79facafdced680 (diff) | |
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/netfilter/nf_flow_table_ip.c')
| -rw-r--r-- | net/netfilter/nf_flow_table_ip.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netfilter/nf_flow_table_ip.c b/net/netfilter/nf_flow_table_ip.c index 889cf88d3dba..f1d387129f02 100644 --- a/net/netfilter/nf_flow_table_ip.c +++ b/net/netfilter/nf_flow_table_ip.c @@ -376,7 +376,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb, nf_flow_nat_ip(flow, skb, thoff, dir, iph); ip_decrease_ttl(iph); - skb->tstamp = 0; + skb_clear_tstamp(skb); if (flow_table->flags & NF_FLOWTABLE_COUNTER) nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len); @@ -611,7 +611,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb, nf_flow_nat_ipv6(flow, skb, dir, ip6h); ip6h->hop_limit--; - skb->tstamp = 0; + skb_clear_tstamp(skb); if (flow_table->flags & NF_FLOWTABLE_COUNTER) nf_ct_acct_update(flow->ct, tuplehash->tuple.dir, skb->len); |