/* SPDX-License-Identifier: GPL-2.0+ *//* * MACsec netdev header, used for h/w accelerated implementations. * * Copyright (c) 2015 Sabrina Dubroca <sd@queasysnail.net> */#ifndef _NET_MACSEC_H_#define _NET_MACSEC_H_ #include <linux/u64_stats_sync.h>#include <uapi/linux/if_link.h>#include <uapi/linux/if_macsec.h> typedef u64 __bitwise sci_t; #define MACSEC_NUM_AN 4 /* 2 bits for the association number */ /** * struct macsec_key - SA key * @id: user-provided key identifier * @tfm: crypto struct, key storage */struct macsec_key {	u8 id[MACSEC_KEYID_LEN];	struct crypto_aead *tfm;}; struct macsec_rx_sc_stats {	__u64 InOctetsValidated;	__u64 InOctetsDecrypted;	__u64 InPktsUnchecked;	__u64 InPktsDelayed;	__u64 InPktsOK;	__u64 InPktsInvalid;	__u64 InPktsLate;	__u64 InPktsNotValid;	__u64 InPktsNotUsingSA;	__u64 InPktsUnusedSA;}; struct macsec_rx_sa_stats {	__u32 InPktsOK;	__u32 InPktsInvalid;	__u32 InPktsNotValid;	__u32 InPktsNotUsingSA;	__u32 InPktsUnusedSA;}; struct macsec_tx_sa_stats {	__u32 OutPktsProtected;	__u32 OutPktsEncrypted;}; struct macsec_tx_sc_stats {	__u64 OutPktsProtected;	__u64 OutPktsEncrypted;	__u64 OutOctetsProtected;	__u64 OutOctetsEncrypted;}; /** * struct macsec_rx_sa - receive secure association * @active: * @next_pn: packet number expected for the next packet * @lock: protects next_pn manipulations * @key: key structure * @stats: per-SA stats */struct macsec_rx_sa {	struct macsec_key key;	spinlock_t lock;	u32 next_pn;	refcount_t refcnt;	bool active;	struct macsec_rx_sa_stats __percpu *stats;	struct macsec_rx_sc *sc;	struct rcu_head rcu;}; struct pcpu_rx_sc_stats {	struct macsec_rx_sc_stats stats;	struct u64_stats_sync syncp;}; struct pcpu_tx_sc_stats {	struct macsec_tx_sc_stats stats;	struct u64_stats_sync syncp;}; /** * struct macsec_rx_sc - receive secure channel * @sci: secure channel identifier for this SC * @active: channel is active * @sa: array of secure associations * @stats: per-SC stats */struct macsec_rx_sc {	struct macsec_rx_sc __rcu *next;	sci_t sci;	bool active;	struct macsec_rx_sa __rcu *sa[MACSEC_NUM_AN];	struct pcpu_rx_sc_stats __percpu *stats;	refcount_t refcnt;	struct rcu_head rcu_head;}; /** * struct macsec_tx_sa - transmit secure association * @active: * @next_pn: packet number to use for the next packet * @lock: protects next_pn manipulations * @key: key structure * @stats: per-SA stats */struct macsec_tx_sa {	struct macsec_key key;	spinlock_t lock;	u32 next_pn;	refcount_t refcnt;	bool active;	struct macsec_tx_sa_stats __percpu *stats;	struct rcu_head rcu;}; /** * struct macsec_tx_sc - transmit secure channel * @active: * @encoding_sa: association number of the SA currently in use * @encrypt: encrypt packets on transmit, or authenticate only * @send_sci: always include the SCI in the SecTAG * @end_station: * @scb: single copy broadcast flag * @sa: array of secure associations * @stats: stats for this TXSC */struct macsec_tx_sc {	bool active;	u8 encoding_sa;	bool encrypt;	bool send_sci;	bool end_station;	bool scb;	struct macsec_tx_sa __rcu *sa[MACSEC_NUM_AN];	struct pcpu_tx_sc_stats __percpu *stats;}; /** * struct macsec_secy - MACsec Security Entity * @netdev: netdevice for this SecY * @n_rx_sc: number of receive secure channels configured on this SecY * @sci: secure channel identifier used for tx * @key_len: length of keys used by the cipher suite * @icv_len: length of ICV used by the cipher suite * @validate_frames: validation mode * @operational: MAC_Operational flag * @protect_frames: enable protection for this SecY * @replay_protect: enable packet number checks on receive * @replay_window: size of the replay window * @tx_sc: transmit secure channel * @rx_sc: linked list of receive secure channels */struct macsec_secy {	struct net_device *netdev;	unsigned int n_rx_sc;	sci_t sci;	u16 key_len;	u16 icv_len;	enum macsec_validation_type validate_frames;	bool operational;	bool protect_frames;	bool replay_protect;	u32 replay_window;	struct macsec_tx_sc tx_sc;	struct macsec_rx_sc __rcu *rx_sc;}; /** * struct macsec_context - MACsec context for hardware offloading */struct macsec_context {	struct phy_device *phydev;	enum macsec_offload offload; 	struct macsec_secy *secy;	struct macsec_rx_sc *rx_sc;	struct {		unsigned char assoc_num;		u8 key[MACSEC_KEYID_LEN];		union {			struct macsec_rx_sa *rx_sa;			struct macsec_tx_sa *tx_sa;		};	} sa; 	u8 prepare:1;}; /** * struct macsec_ops - MACsec offloading operations */struct macsec_ops {	/* Device wide */	int (*mdo_dev_open)(struct macsec_context *ctx);	int (*mdo_dev_stop)(struct macsec_context *ctx);	/* SecY */	int (*mdo_add_secy)(struct macsec_context *ctx);	int (*mdo_upd_secy)(struct macsec_context *ctx);	int (*mdo_del_secy)(struct macsec_context *ctx);	/* Security channels */	int (*mdo_add_rxsc)(struct macsec_context *ctx);	int (*mdo_upd_rxsc)(struct macsec_context *ctx);	int (*mdo_del_rxsc)(struct macsec_context *ctx);	/* Security associations */	int (*mdo_add_rxsa)(struct macsec_context *ctx);	int (*mdo_upd_rxsa)(struct macsec_context *ctx);	int (*mdo_del_rxsa)(struct macsec_context *ctx);	int (*mdo_add_txsa)(struct macsec_context *ctx);	int (*mdo_upd_txsa)(struct macsec_context *ctx);	int (*mdo_del_txsa)(struct macsec_context *ctx);}; void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa); #endif /* _NET_MACSEC_H_ */