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.hor...@netronome.com>
---
v11
* New patch
---
include/linux/skbuff.h | 5 +++++
1 file changed, 5 insertions(+)
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);
--
2.7.0.rc3.207.g0ac5344
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