diff options
Diffstat (limited to 'include/net/ieee802154_netdev.h')
| -rw-r--r-- | include/net/ieee802154_netdev.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h index 5a719ca892f4..6e4d3e1071b5 100644 --- a/include/net/ieee802154_netdev.h +++ b/include/net/ieee802154_netdev.h @@ -27,6 +27,7 @@ #ifndef IEEE802154_NETDEVICE_H #define IEEE802154_NETDEVICE_H +#include <net/ieee802154.h> #include <net/af_ieee802154.h> #include <linux/netdevice.h> #include <linux/skbuff.h> @@ -114,6 +115,34 @@ int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr); int ieee802154_hdr_peek_addrs(const struct sk_buff *skb, struct ieee802154_hdr *hdr); +/* parses the full 802.15.4 header a given skb and stores them into hdr, + * performing pan id decompression and length checks to be suitable for use in + * header_ops.parse + */ +int ieee802154_hdr_peek(const struct sk_buff *skb, struct ieee802154_hdr *hdr); + +int ieee802154_max_payload(const struct ieee802154_hdr *hdr); + +static inline int +ieee802154_sechdr_authtag_len(const struct ieee802154_sechdr *sec) +{ + switch (sec->level) { + case IEEE802154_SCF_SECLEVEL_MIC32: + case IEEE802154_SCF_SECLEVEL_ENC_MIC32: + return 4; + case IEEE802154_SCF_SECLEVEL_MIC64: + case IEEE802154_SCF_SECLEVEL_ENC_MIC64: + return 8; + case IEEE802154_SCF_SECLEVEL_MIC128: + case IEEE802154_SCF_SECLEVEL_ENC_MIC128: + return 16; + case IEEE802154_SCF_SECLEVEL_NONE: + case IEEE802154_SCF_SECLEVEL_ENC: + default: + return 0; + } +} + static inline int ieee802154_hdr_length(struct sk_buff *skb) { struct ieee802154_hdr hdr; |