diff options
| author | Daniel Borkmann <[email protected]> | 2017-07-02 02:13:25 +0200 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2017-07-03 02:22:51 -0700 |
| commit | 0daf4349406074fc03e4889ba5e97e6fb5311bab (patch) | |
| tree | 9e0dae4b6a5c254804136df0ee6827c3ba0f3b26 /include/linux | |
| parent | a68491f895a937778bb25b0795830797239de31f (diff) | |
bpf, net: add skb_mac_header_len helper
Add a small skb_mac_header_len() helper similarly as the
skb_network_header_len() we have and replace open coded
places in BPF's bpf_skb_change_proto() helper. Will also
be used in upcoming work.
Signed-off-by: Daniel Borkmann <[email protected]>
Acked-by: John Fastabend <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/skbuff.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index d0b9f3846eab..3d3ceaac13b1 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -2206,6 +2206,11 @@ static inline int skb_mac_offset(const struct sk_buff *skb) return skb_mac_header(skb) - skb->data; } +static inline u32 skb_mac_header_len(const struct sk_buff *skb) +{ + return skb->network_header - skb->mac_header; +} + static inline int skb_mac_header_was_set(const struct sk_buff *skb) { return skb->mac_header != (typeof(skb->mac_header))~0U; |