/* SPDX-License-Identifier: GPL-2.0-only *//* * An interface between IEEE802.15.4 device and rest of the kernel. * * Copyright (C) 2007-2012 Siemens AG * * 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 intieee802154_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