diff options
Diffstat (limited to 'include/net/ieee802154_netdev.h')
| -rw-r--r-- | include/net/ieee802154_netdev.h | 187 |
1 files changed, 170 insertions, 17 deletions
diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h index 5a719ca892f..3b53c8e405e 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; @@ -193,8 +222,12 @@ static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa, */ struct ieee802154_mac_cb { u8 lqi; - u8 flags; - u8 seq; + u8 type; + bool ackreq; + bool secen; + bool secen_override; + u8 seclevel; + bool seclevel_override; struct ieee802154_addr source; struct ieee802154_addr dest; }; @@ -204,25 +237,96 @@ static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb) return (struct ieee802154_mac_cb *)skb->cb; } -#define MAC_CB_FLAG_TYPEMASK ((1 << 3) - 1) - -#define MAC_CB_FLAG_ACKREQ (1 << 3) -#define MAC_CB_FLAG_SECEN (1 << 4) - -static inline bool mac_cb_is_ackreq(struct sk_buff *skb) +static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb) { - return mac_cb(skb)->flags & MAC_CB_FLAG_ACKREQ; -} + BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb)); -static inline bool mac_cb_is_secen(struct sk_buff *skb) -{ - return mac_cb(skb)->flags & MAC_CB_FLAG_SECEN; + memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb)); + return mac_cb(skb); } -static inline int mac_cb_type(struct sk_buff *skb) -{ - return mac_cb(skb)->flags & MAC_CB_FLAG_TYPEMASK; -} +#define IEEE802154_LLSEC_KEY_SIZE 16 + +struct ieee802154_llsec_key_id { + u8 mode; + u8 id; + union { + struct ieee802154_addr device_addr; + __le32 short_source; + __le64 extended_source; + }; +}; + +struct ieee802154_llsec_key { + u8 frame_types; + u32 cmd_frame_ids; + u8 key[IEEE802154_LLSEC_KEY_SIZE]; +}; + +struct ieee802154_llsec_key_entry { + struct list_head list; + + struct ieee802154_llsec_key_id id; + struct ieee802154_llsec_key *key; +}; + +struct ieee802154_llsec_device_key { + struct list_head list; + + struct ieee802154_llsec_key_id key_id; + u32 frame_counter; +}; + +enum { + IEEE802154_LLSEC_DEVKEY_IGNORE, + IEEE802154_LLSEC_DEVKEY_RESTRICT, + IEEE802154_LLSEC_DEVKEY_RECORD, + + __IEEE802154_LLSEC_DEVKEY_MAX, +}; + +struct ieee802154_llsec_device { + struct list_head list; + + __le16 pan_id; + __le16 short_addr; + __le64 hwaddr; + u32 frame_counter; + bool seclevel_exempt; + + u8 key_mode; + struct list_head keys; +}; + +struct ieee802154_llsec_seclevel { + struct list_head list; + + u8 frame_type; + u8 cmd_frame_id; + bool device_override; + u32 sec_levels; +}; + +struct ieee802154_llsec_params { + bool enabled; + + __be32 frame_counter; + u8 out_level; + struct ieee802154_llsec_key_id out_key; + + __le64 default_key_source; + + __le16 pan_id; + __le64 hwaddr; + __le64 coord_hwaddr; + __le16 coord_shortaddr; +}; + +struct ieee802154_llsec_table { + struct list_head keys; + struct list_head devices; + struct list_head security_levels; +}; #define IEEE802154_MAC_SCAN_ED 0 #define IEEE802154_MAC_SCAN_ACTIVE 1 @@ -242,6 +346,53 @@ struct ieee802154_mac_params { }; struct wpan_phy; + +enum { + IEEE802154_LLSEC_PARAM_ENABLED = 1 << 0, + IEEE802154_LLSEC_PARAM_FRAME_COUNTER = 1 << 1, + IEEE802154_LLSEC_PARAM_OUT_LEVEL = 1 << 2, + IEEE802154_LLSEC_PARAM_OUT_KEY = 1 << 3, + IEEE802154_LLSEC_PARAM_KEY_SOURCE = 1 << 4, + IEEE802154_LLSEC_PARAM_PAN_ID = 1 << 5, + IEEE802154_LLSEC_PARAM_HWADDR = 1 << 6, + IEEE802154_LLSEC_PARAM_COORD_HWADDR = 1 << 7, + IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = 1 << 8, +}; + +struct ieee802154_llsec_ops { + int (*get_params)(struct net_device *dev, + struct ieee802154_llsec_params *params); + int (*set_params)(struct net_device *dev, + const struct ieee802154_llsec_params *params, + int changed); + + int (*add_key)(struct net_device *dev, + const struct ieee802154_llsec_key_id *id, + const struct ieee802154_llsec_key *key); + int (*del_key)(struct net_device *dev, + const struct ieee802154_llsec_key_id *id); + + int (*add_dev)(struct net_device *dev, + const struct ieee802154_llsec_device *llsec_dev); + int (*del_dev)(struct net_device *dev, __le64 dev_addr); + + int (*add_devkey)(struct net_device *dev, + __le64 device_addr, + const struct ieee802154_llsec_device_key *key); + int (*del_devkey)(struct net_device *dev, + __le64 device_addr, + const struct ieee802154_llsec_device_key *key); + + int (*add_seclevel)(struct net_device *dev, + const struct ieee802154_llsec_seclevel *sl); + int (*del_seclevel)(struct net_device *dev, + const struct ieee802154_llsec_seclevel *sl); + + void (*lock_table)(struct net_device *dev); + void (*get_table)(struct net_device *dev, + struct ieee802154_llsec_table **t); + void (*unlock_table)(struct net_device *dev); +}; /* * This should be located at net_device->ml_priv * @@ -272,6 +423,8 @@ struct ieee802154_mlme_ops { void (*get_mac_params)(struct net_device *dev, struct ieee802154_mac_params *params); + struct ieee802154_llsec_ops *llsec; + /* The fields below are required. */ struct wpan_phy *(*get_phy)(const struct net_device *dev); |