From dc20759f281c0f9e6c4fca8be251deca2954862a Mon Sep 17 00:00:00 2001 From: Phoebe Buckheister Date: Fri, 16 May 2014 17:46:35 +0200 Subject: [PATCH] ieee802154: add types for link-layer security The added structures match 802.15.4-2011 link-layer security PIBs as closely as is reasonable. Some lists required by the standard were modeled as bitmaps (frame_types and command_frame_ids in *llsec_key, 802.15.4-2011 7.5/Table 61), since using lists for those seems a bit excessive and not particularly useful. The DeviceDescriptorHandleList was inverted and is here a per-device list, since operations on this list are likely to have both a key and a device at hand, and per-device lists of keys are shorter than per-key lists of devices. Signed-off-by: Phoebe Buckheister Signed-off-by: David S. Miller --- include/net/ieee802154_netdev.h | 95 +++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/include/net/ieee802154_netdev.h b/include/net/ieee802154_netdev.h index bc9a7475e57e..6f8f9c2f6037 100644 --- a/include/net/ieee802154_netdev.h +++ b/include/net/ieee802154_netdev.h @@ -242,6 +242,88 @@ static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb) return mac_cb(skb); } +#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_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 #define IEEE802154_MAC_SCAN_PASSIVE 2 @@ -260,6 +342,19 @@ 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, +}; + /* * This should be located at net_device->ml_priv * -- 2.20.1