Message ID | 1376430813-30982-5-git-send-email-alex.aring@gmail.com |
---|---|
State | Changes Requested, archived |
Delegated to: | David Miller |
Headers | show |
diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h index 61f0ce9..e3348ec 100644 --- a/net/ieee802154/6lowpan.h +++ b/net/ieee802154/6lowpan.h @@ -233,4 +233,16 @@ dest = 16 bit inline */ #define LOWPAN_NHC_UDP_CS_P_11 0xF3 /* source & dest = 0xF0B + 4bit inline */ +static inline bool lowpan_fetch_skb(struct sk_buff *skb, + void *data, const unsigned int len) +{ + if (unlikely(!pskb_may_pull(skb, len))) + return true; + + skb_copy_from_linear_data(skb, data, len); + skb_pull(skb, len); + + return false; +} + #endif /* __6LOWPAN_H__ */
This patch adds a helper function to parse the ipv6 header to a 6lowpan header in stream. This function checks first if we can pull data with a specific length from a skb. If this seems to be okay, we copy skb data to a destination pointer and run skb_pull. Signed-off-by: Alexander Aring <alex.aring@gmail.com> --- net/ieee802154/6lowpan.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)