net: gro: no longer use skb_vlan_tag_present()
We can remove a conditional test in gro_list_prepare() by comparing vlan_all fields of the two skbs. Notes: While comparing the vlan_proto is not strictly needed, because part of the following compare_ether_header() call, using 32bit word is actually faster than using 16bit values. napi_reuse_skb() makes sure to clear skb->vlan_all, as it already calls __vlan_hwaccel_clear_tag() Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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