diff options
Diffstat (limited to 'include/net/6lowpan.h')
| -rw-r--r-- | include/net/6lowpan.h | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/include/net/6lowpan.h b/include/net/6lowpan.h index aa5a82380e4e..6f1e0bd3d211 100644 --- a/include/net/6lowpan.h +++ b/include/net/6lowpan.h @@ -258,7 +258,7 @@ struct lowpan_802154_cb *lowpan_802154_cb(const struct sk_buff *skb) #ifdef DEBUG /* print data in line */ static inline void raw_dump_inline(const char *caller, char *msg, - unsigned char *buf, int len) + const unsigned char *buf, int len) { if (msg) pr_debug("%s():%s: ", caller, msg); @@ -273,7 +273,7 @@ static inline void raw_dump_inline(const char *caller, char *msg, * ... */ static inline void raw_dump_table(const char *caller, char *msg, - unsigned char *buf, int len) + const unsigned char *buf, int len) { if (msg) pr_debug("%s():%s:\n", caller, msg); @@ -282,9 +282,9 @@ static inline void raw_dump_table(const char *caller, char *msg, } #else static inline void raw_dump_table(const char *caller, char *msg, - unsigned char *buf, int len) { } + const unsigned char *buf, int len) { } static inline void raw_dump_inline(const char *caller, char *msg, - unsigned char *buf, int len) { } + const unsigned char *buf, int len) { } #endif static inline int lowpan_fetch_skb_u8(struct sk_buff *skb, u8 *val) @@ -325,8 +325,24 @@ lowpan_header_decompress(struct sk_buff *skb, struct net_device *dev, const u8 saddr_len, const u8 *daddr, const u8 daddr_type, const u8 daddr_len, u8 iphc0, u8 iphc1); -int lowpan_header_compress(struct sk_buff *skb, struct net_device *dev, - unsigned short type, const void *_daddr, - const void *_saddr, unsigned int len); + +/** + * lowpan_header_compress - replace IPv6 header with 6LoWPAN header + * + * This function replaces the IPv6 header which should be pointed at + * skb->data and skb_network_header, with the IPHC 6LoWPAN header. + * The caller need to be sure that the sk buffer is not shared and at have + * at least a headroom which is smaller or equal LOWPAN_IPHC_MAX_HEADER_LEN, + * which is the IPHC "more bytes than IPv6 header" at worst case. + * + * @skb: the buffer which should be manipulate. + * @dev: the lowpan net device pointer. + * @daddr: destination lladdr of mac header which is used for compression + * methods. + * @saddr: source lladdr of mac header which is used for compression + * methods. + */ +int lowpan_header_compress(struct sk_buff *skb, const struct net_device *dev, + const void *daddr, const void *saddr); #endif /* __6LOWPAN_H__ */ |