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/core | |
| parent | a1ac9c8acec1605c6b43af418f79facafdced680 (diff) | |
| download | linux-de799101519aad23c6096041ba2744d7b5517e6a.tar.bz2 | |
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/core')
| -rw-r--r-- | net/core/filter.c | 6 | ||||
| -rw-r--r-- | net/core/skbuff.c | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/core/filter.c b/net/core/filter.c index 65869fd510e8..cfcf9b4d1ec2 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -2107,7 +2107,7 @@ static inline int __bpf_tx_skb(struct net_device *dev, struct sk_buff *skb) } skb->dev = dev; - skb->tstamp = 0; + skb_clear_tstamp(skb); dev_xmit_recursion_inc(); ret = dev_queue_xmit(skb); @@ -2176,7 +2176,7 @@ static int bpf_out_neigh_v6(struct net *net, struct sk_buff *skb, } skb->dev = dev; - skb->tstamp = 0; + skb_clear_tstamp(skb); if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) { skb = skb_expand_head(skb, hh_len); @@ -2274,7 +2274,7 @@ static int bpf_out_neigh_v4(struct net *net, struct sk_buff *skb, } skb->dev = dev; - skb->tstamp = 0; + skb_clear_tstamp(skb); if (unlikely(skb_headroom(skb) < hh_len && dev->header_ops)) { skb = skb_expand_head(skb, hh_len); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index b32c5d782fe1..9abb0028309f 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -5381,7 +5381,7 @@ void skb_scrub_packet(struct sk_buff *skb, bool xnet) ipvs_reset(skb); skb->mark = 0; - skb->tstamp = 0; + skb_clear_tstamp(skb); } EXPORT_SYMBOL_GPL(skb_scrub_packet); |