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nl802154: add support for security layer

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This patch adds support for accessing mac802154 llsec implementation
over nl802154. I added for a new Kconfig entry to provide this
functionality CONFIG_IEEE802154_NL802154_EXPERIMENTAL. This interface is
still in development. It provides to change security parameters and
add/del/dump entries of security tables. Later we can add also a get to
get an entry by unique identifier.

Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-09-28 09:00:25 +02:00 • committed by Marcel Holtmann
parent 1ee06ef159
commit a26c5fd762
9 changed files with 1782 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

131
include/net/cfg802154.h
View file

@ -27,6 +27,16 @@
struct wpan_phy;
struct wpan_phy_cca;
#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
struct ieee802154_llsec_device_key;
struct ieee802154_llsec_seclevel;
struct ieee802154_llsec_params;
struct ieee802154_llsec_device;
struct ieee802154_llsec_table;
struct ieee802154_llsec_key_id;
struct ieee802154_llsec_key;
#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
struct cfg802154_ops {
struct net_device * (*add_virtual_intf_deprecated)(struct wpan_phy *wpan_phy,
const char *name,
@ -65,6 +75,51 @@ struct cfg802154_ops {
struct wpan_dev *wpan_dev, bool mode);
int (*set_ackreq_default)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, bool ackreq);
#ifdef CONFIG_IEEE802154_NL802154_EXPERIMENTAL
void (*get_llsec_table)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
struct ieee802154_llsec_table **table);
void (*lock_llsec_table)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev);
void (*unlock_llsec_table)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev);
/* TODO remove locking/get table callbacks, this is part of the
* nl802154 interface and should be accessible from ieee802154 layer.
*/
int (*get_llsec_params)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
struct ieee802154_llsec_params *params);
int (*set_llsec_params)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_params *params,
int changed);
int (*add_llsec_key)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_key_id *id,
const struct ieee802154_llsec_key *key);
int (*del_llsec_key)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_key_id *id);
int (*add_seclevel)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_seclevel *sl);
int (*del_seclevel)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_seclevel *sl);
int (*add_device)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
const struct ieee802154_llsec_device *dev);
int (*del_device)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, __le64 extended_addr);
int (*add_devkey)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
__le64 extended_addr,
const struct ieee802154_llsec_device_key *key);
int (*del_devkey)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev,
__le64 extended_addr,
const struct ieee802154_llsec_device_key *key);
#endif /* CONFIG_IEEE802154_NL802154_EXPERIMENTAL */
};
static inline bool
@ -176,6 +231,82 @@ struct ieee802154_addr {
};
};
struct ieee802154_llsec_key_id {
u8 mode;
u8 id;
union {
struct ieee802154_addr device_addr;
__le32 short_source;
__le64 extended_source;
};
};
#define IEEE802154_LLSEC_KEY_SIZE 16
struct ieee802154_llsec_key {
u8 frame_types;
u32 cmd_frame_ids;
/* TODO replace with NL802154_KEY_SIZE */
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_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;
};
struct ieee802154_llsec_seclevel {
struct list_head list;
u8 frame_type;
u8 cmd_frame_id;
bool device_override;
u32 sec_levels;
};
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_device_key {
struct list_head list;
struct ieee802154_llsec_key_id key_id;
u32 frame_counter;
};
struct wpan_dev_header_ops {
/* TODO create callback currently assumes ieee802154_mac_cb inside
* skb->cb. This should be changed to give these information as