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net/usbnet: reserve headroom on rx skbs
network drivers should reserve some headroom on incoming skbs so that we dont need expensive reallocations, eg forwarding packets in tunnels. This NET_SKB_PAD padding is done in various helpers, like __netdev_alloc_skb_ip_align() in this patch, combining NET_SKB_PAD and NET_IP_ALIGN magic. Signed-off-by: Eric Dumazet <firstname.lastname@example.org> Cc: Oliver Neukum <email@example.com> Cc: Greg Kroah-Hartman <firstname.lastname@example.org> Acked-by: Oliver Neukum <email@example.com> Signed-off-by: David S. Miller <firstname.lastname@example.org>
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