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EDIT: ieee802154_netdev.h
/* * An interface between IEEE802.15.4 device and rest of the kernel. * * Copyright (C) 2007-2012 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * Written by: * Pavel Smolenskiy <pavel.smolenskiy@gmail.com> * Maxim Gorbachyov <maxim.gorbachev@siemens.com> * Maxim Osipov <maxim.osipov@siemens.com> * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> */ #ifndef IEEE802154_NETDEVICE_H #define IEEE802154_NETDEVICE_H #include <net/af_ieee802154.h> #include <linux/netdevice.h> #include <linux/skbuff.h> #include <linux/ieee802154.h> #include <net/cfg802154.h> struct ieee802154_sechdr { #if defined(__LITTLE_ENDIAN_BITFIELD) u8 level:3, key_id_mode:2, reserved:3; #elif defined(__BIG_ENDIAN_BITFIELD) u8 reserved:3, key_id_mode:2, level:3; #else #error "Please fix <asm/byteorder.h>" #endif u8 key_id; __le32 frame_counter; union { __le32 short_src; __le64 extended_src; }; }; struct ieee802154_hdr_fc { #if defined(__LITTLE_ENDIAN_BITFIELD) u16 type:3, security_enabled:1, frame_pending:1, ack_request:1, intra_pan:1, reserved:3, dest_addr_mode:2, version:2, source_addr_mode:2; #elif defined(__BIG_ENDIAN_BITFIELD) u16 reserved:1, intra_pan:1, ack_request:1, frame_pending:1, security_enabled:1, type:3, source_addr_mode:2, version:2, dest_addr_mode:2, reserved2:2; #else #error "Please fix <asm/byteorder.h>" #endif }; struct ieee802154_hdr { struct ieee802154_hdr_fc fc; u8 seq; struct ieee802154_addr source; struct ieee802154_addr dest; struct ieee802154_sechdr sec; }; /* pushes hdr onto the skb. fields of hdr->fc that can be calculated from * the contents of hdr will be, and the actual value of those bits in * hdr->fc will be ignored. this includes the INTRA_PAN bit and the frame * version, if SECEN is set. */ int ieee802154_hdr_push(struct sk_buff *skb, struct ieee802154_hdr *hdr); /* pulls the entire 802.15.4 header off of the skb, including the security * header, and performs pan id decompression */ int ieee802154_hdr_pull(struct sk_buff *skb, struct ieee802154_hdr *hdr); /* parses the frame control, sequence number of address fields in 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_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; int len = ieee802154_hdr_pull(skb, &hdr); if (len > 0) skb_push(skb, len); return len; } static inline bool ieee802154_addr_equal(const struct ieee802154_addr *a1, const struct ieee802154_addr *a2) { if (a1->pan_id != a2->pan_id || a1->mode != a2->mode) return false; if ((a1->mode == IEEE802154_ADDR_LONG && a1->extended_addr != a2->extended_addr) || (a1->mode == IEEE802154_ADDR_SHORT && a1->short_addr != a2->short_addr)) return false; return true; } static inline __le64 ieee802154_devaddr_from_raw(const void *raw) { u64 temp; memcpy(&temp, raw, IEEE802154_ADDR_LEN); return (__force __le64)swab64(temp); } static inline void ieee802154_devaddr_to_raw(void *raw, __le64 addr) { u64 temp = swab64((__force u64)addr); memcpy(raw, &temp, IEEE802154_ADDR_LEN); } static inline void ieee802154_addr_from_sa(struct ieee802154_addr *a, const struct ieee802154_addr_sa *sa) { a->mode = sa->addr_type; a->pan_id = cpu_to_le16(sa->pan_id); switch (a->mode) { case IEEE802154_ADDR_SHORT: a->short_addr = cpu_to_le16(sa->short_addr); break; case IEEE802154_ADDR_LONG: a->extended_addr = ieee802154_devaddr_from_raw(sa->hwaddr); break; } } static inline void ieee802154_addr_to_sa(struct ieee802154_addr_sa *sa, const struct ieee802154_addr *a) { sa->addr_type = a->mode; sa->pan_id = le16_to_cpu(a->pan_id); switch (a->mode) { case IEEE802154_ADDR_SHORT: sa->short_addr = le16_to_cpu(a->short_addr); break; case IEEE802154_ADDR_LONG: ieee802154_devaddr_to_raw(sa->hwaddr, a->extended_addr); break; } } /* * A control block of skb passed between the ARPHRD_IEEE802154 device * and other stack parts. */ struct ieee802154_mac_cb { u8 lqi; u8 type; bool ackreq; bool secen; bool secen_override; u8 seclevel; bool seclevel_override; struct ieee802154_addr source; struct ieee802154_addr dest; }; static inline struct ieee802154_mac_cb *mac_cb(struct sk_buff *skb) { return (struct ieee802154_mac_cb *)skb->cb; } static inline struct ieee802154_mac_cb *mac_cb_init(struct sk_buff *skb) { BUILD_BUG_ON(sizeof(struct ieee802154_mac_cb) > sizeof(skb->cb)); memset(skb->cb, 0, sizeof(struct ieee802154_mac_cb)); return mac_cb(skb); } enum { IEEE802154_LLSEC_DEVKEY_IGNORE, IEEE802154_LLSEC_DEVKEY_RESTRICT, IEEE802154_LLSEC_DEVKEY_RECORD, __IEEE802154_LLSEC_DEVKEY_MAX, }; #define IEEE802154_MAC_SCAN_ED 0 #define IEEE802154_MAC_SCAN_ACTIVE 1 #define IEEE802154_MAC_SCAN_PASSIVE 2 #define IEEE802154_MAC_SCAN_ORPHAN 3 struct ieee802154_mac_params { s8 transmit_power; u8 min_be; u8 max_be; u8 csma_retries; s8 frame_retries; bool lbt; struct wpan_phy_cca cca; s32 cca_ed_level; }; struct wpan_phy; enum { IEEE802154_LLSEC_PARAM_ENABLED = BIT(0), IEEE802154_LLSEC_PARAM_FRAME_COUNTER = BIT(1), IEEE802154_LLSEC_PARAM_OUT_LEVEL = BIT(2), IEEE802154_LLSEC_PARAM_OUT_KEY = BIT(3), IEEE802154_LLSEC_PARAM_KEY_SOURCE = BIT(4), IEEE802154_LLSEC_PARAM_PAN_ID = BIT(5), IEEE802154_LLSEC_PARAM_HWADDR = BIT(6), IEEE802154_LLSEC_PARAM_COORD_HWADDR = BIT(7), IEEE802154_LLSEC_PARAM_COORD_SHORTADDR = BIT(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 * * get_phy should increment the reference counting on returned phy. * Use wpan_wpy_put to put that reference. */ struct ieee802154_mlme_ops { /* The following fields are optional (can be NULL). */ int (*assoc_req)(struct net_device *dev, struct ieee802154_addr *addr, u8 channel, u8 page, u8 cap); int (*assoc_resp)(struct net_device *dev, struct ieee802154_addr *addr, __le16 short_addr, u8 status); int (*disassoc_req)(struct net_device *dev, struct ieee802154_addr *addr, u8 reason); int (*start_req)(struct net_device *dev, struct ieee802154_addr *addr, u8 channel, u8 page, u8 bcn_ord, u8 sf_ord, u8 pan_coord, u8 blx, u8 coord_realign); int (*scan_req)(struct net_device *dev, u8 type, u32 channels, u8 page, u8 duration); int (*set_mac_params)(struct net_device *dev, const struct ieee802154_mac_params *params); void (*get_mac_params)(struct net_device *dev, struct ieee802154_mac_params *params); const struct ieee802154_llsec_ops *llsec; }; static inline struct ieee802154_mlme_ops * ieee802154_mlme_ops(const struct net_device *dev) { return dev->ml_priv; } #endif