| Message ID | 1467827996-32547-2-git-send-email-simon.horman@netronome.com |
|---|---|
| State | Changes Requested, archived |
| Delegated to: | David Miller |
| Headers | show |
On Wed, Jul 6, 2016 at 10:59 AM, Simon Horman <simon.horman@netronome.com> wrote: > This helper resets the mac_header of an skb to a state where > skb_transport_header_was_set() will return false. > > This is intended to be used with packets received on > ARPHRD_NONE devices without an Ethernet header in the inner packet. > It allows skb_transport_header_was_set to be subsequently used to > differentiate such packets from those with an Ethernet header. > > Signed-off-by: Simon Horman <simon.horman@netronome.com> Acked-by: Pravin B Shelar <pshelar@ovn.org>
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 638b0e004310..669d63b038f6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2170,6 +2170,11 @@ static inline void skb_reset_mac_header(struct sk_buff *skb) skb->mac_header = skb->data - skb->head; } +static inline void skb_unset_mac_header(struct sk_buff *skb) +{ + skb->mac_header = (typeof(skb->mac_header))~0U; +} + static inline void skb_set_mac_header(struct sk_buff *skb, const int offset) { skb_reset_mac_header(skb);
This helper resets the mac_header of an skb to a state where skb_transport_header_was_set() will return false. This is intended to be used with packets received on ARPHRD_NONE devices without an Ethernet header in the inner packet. It allows skb_transport_header_was_set to be subsequently used to differentiate such packets from those with an Ethernet header. Signed-off-by: Simon Horman <simon.horman@netronome.com> --- v11 * New patch --- include/linux/skbuff.h | 5 +++++ 1 file changed, 5 insertions(+)