diff options
Diffstat (limited to 'net/ieee802154/6lowpan.h')
| -rw-r--r-- | net/ieee802154/6lowpan.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h index 4b8f917658b..2869c0526da 100644 --- a/net/ieee802154/6lowpan.h +++ b/net/ieee802154/6lowpan.h @@ -193,10 +193,12 @@ /* Values of fields within the IPHC encoding second byte */ #define LOWPAN_IPHC_CID 0x80 +#define LOWPAN_IPHC_ADDR_00 0x00 +#define LOWPAN_IPHC_ADDR_01 0x01 +#define LOWPAN_IPHC_ADDR_02 0x02 +#define LOWPAN_IPHC_ADDR_03 0x03 + #define LOWPAN_IPHC_SAC 0x40 -#define LOWPAN_IPHC_SAM_00 0x00 -#define LOWPAN_IPHC_SAM_01 0x10 -#define LOWPAN_IPHC_SAM_10 0x20 #define LOWPAN_IPHC_SAM 0x30 #define LOWPAN_IPHC_SAM_BIT 4 @@ -230,4 +232,16 @@ 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__ */ |