On 2019/04/15 16:43, Yuya Kusakabe wrote:
...
> > @@ -5095,6 +5096,13 @@ static struct sk_buff
> > *skb_reorder_vlan_header(struct sk_buff *skb)
> > memmove(skb_mac_header(skb) + VLAN_HLEN,
> skb_mac_header(skb),
> > mac_len - VLAN_HLEN - ETH_TLEN);
> > }
> > +
> > + meta_len = skb_metadata_len(skb);
> > + if (meta_len) {
>
> Since this is not used by non-XDP skb and skb path is slow-path for XDP
> anyway, should add unlikely here in favor of non-XDP case?
>
>
> I referred to meta data support of the ixgbe driver. It doesn't use
> "unlikely".
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/tree/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c#n2176
No need to conform to existing logic when we can improve it...
Anyway this is a minor point and I'm OK with either.
Reviewed-by: Toshiaki Makita <[email protected]>
--
Toshiaki Makita
