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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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#include <linux/u64_stats_sync.h>#include <linux/if_vlan.h>#include <linux/workqueue.h>#include <uapi/linux/if_link.h>#include <uapi/linux/if_macsec.h>
#define MACSEC_DEFAULT_PN_LEN 4#define MACSEC_XPN_PN_LEN 8
#define MACSEC_NUM_AN 4 /* 2 bits for the association number */
#define MACSEC_SCI_LEN 8#define MACSEC_PORT_ES (htons(0x0001))
#define MACSEC_TCI_VERSION 0x80#define MACSEC_TCI_ES 0x40 /* end station */#define MACSEC_TCI_SC 0x20 /* SCI present */#define MACSEC_TCI_SCB 0x10 /* epon */#define MACSEC_TCI_E 0x08 /* encryption */#define MACSEC_TCI_C 0x04 /* changed text */#define MACSEC_AN_MASK 0x03 /* association number */#define MACSEC_TCI_CONFID (MACSEC_TCI_E | MACSEC_TCI_C)
#define MACSEC_DEFAULT_ICV_LEN 16
typedef u64 __bitwise sci_t;typedef u32 __bitwise ssci_t;
struct metadata_dst;
typedef union salt { struct { ssci_t ssci; __be64 pn; } __packed; u8 bytes[MACSEC_SALT_LEN];} __packed salt_t;
typedef union pn { struct {#if defined(__LITTLE_ENDIAN_BITFIELD) u32 lower; u32 upper;#elif defined(__BIG_ENDIAN_BITFIELD) u32 upper; u32 lower;#else#error "Please fix <asm/byteorder.h>"#endif }; u64 full64;} pn_t;
/** * struct macsec_key - SA key * @id: user-provided key identifier * @tfm: crypto struct, key storage * @salt: salt used to generate IV in XPN cipher suites */struct macsec_key { u8 id[MACSEC_KEYID_LEN]; struct crypto_aead *tfm; salt_t salt;};
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_dev_stats { __u64 OutPktsUntagged; __u64 InPktsUntagged; __u64 OutPktsTooLong; __u64 InPktsNoTag; __u64 InPktsBadTag; __u64 InPktsUnknownSCI; __u64 InPktsNoSCI; __u64 InPktsOverrun;};
/** * 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 * @ssci: short secure channel identifier * @stats: per-SA stats * @destroy_work: deferred work to free the SA in process context after RCU grace period */struct macsec_rx_sa { struct macsec_key key; ssci_t ssci; spinlock_t lock; union { pn_t next_pn_halves; u64 next_pn; }; refcount_t refcnt; bool active; struct macsec_rx_sa_stats __percpu *stats; struct macsec_rx_sc *sc; struct rcu_work destroy_work;};
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 * @ssci: short secure channel identifier * @stats: per-SA stats * @destroy_work: deferred work to free the SA in process context after RCU grace period */struct macsec_tx_sa { struct macsec_key key; ssci_t ssci; spinlock_t lock; union { pn_t next_pn_halves; u64 next_pn; }; refcount_t refcnt; bool active; struct macsec_tx_sa_stats __percpu *stats; struct rcu_work destroy_work;};
/** * 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 * @md_dst: MACsec offload metadata dst */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 metadata_dst *md_dst;};
/** * 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 * @xpn: enable XPN for this SecY * @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 xpn; 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 * @netdev: a valid pointer to a struct net_device if @offload == * MACSEC_OFFLOAD_MAC * @phydev: a valid pointer to a struct phy_device if @offload == * MACSEC_OFFLOAD_PHY * @offload: MACsec offload status * @secy: pointer to a MACsec SecY * @rx_sc: pointer to a RX SC * @update_pn: when updating the SA, update the next PN * @assoc_num: association number of the target SA * @key: key of the target SA * @rx_sa: pointer to an RX SA if a RX SA is added/updated/removed * @tx_sa: pointer to an TX SA if a TX SA is added/updated/removed * @tx_sc_stats: pointer to TX SC stats structure * @tx_sa_stats: pointer to TX SA stats structure * @rx_sc_stats: pointer to RX SC stats structure * @rx_sa_stats: pointer to RX SA stats structure * @dev_stats: pointer to dev stats structure */struct macsec_context { union { struct net_device *netdev; struct phy_device *phydev; }; enum macsec_offload offload;
struct macsec_secy *secy; struct macsec_rx_sc *rx_sc; struct { bool update_pn; unsigned char assoc_num; u8 key[MACSEC_MAX_KEY_LEN]; union { struct macsec_rx_sa *rx_sa; struct macsec_tx_sa *tx_sa; }; } sa; union { struct macsec_tx_sc_stats *tx_sc_stats; struct macsec_tx_sa_stats *tx_sa_stats; struct macsec_rx_sc_stats *rx_sc_stats; struct macsec_rx_sa_stats *rx_sa_stats; struct macsec_dev_stats *dev_stats; } stats;};
/** * struct macsec_ops - MACsec offloading operations * @mdo_dev_open: called when the MACsec interface transitions to the up state * @mdo_dev_stop: called when the MACsec interface transitions to the down * state * @mdo_add_secy: called when a new SecY is added * @mdo_upd_secy: called when the SecY flags are changed or the MAC address of * the MACsec interface is changed * @mdo_del_secy: called when the hw offload is disabled or the MACsec * interface is removed * @mdo_add_rxsc: called when a new RX SC is added * @mdo_upd_rxsc: called when a certain RX SC is updated * @mdo_del_rxsc: called when a certain RX SC is removed * @mdo_add_rxsa: called when a new RX SA is added * @mdo_upd_rxsa: called when a certain RX SA is updated * @mdo_del_rxsa: called when a certain RX SA is removed * @mdo_add_txsa: called when a new TX SA is added * @mdo_upd_txsa: called when a certain TX SA is updated * @mdo_del_txsa: called when a certain TX SA is removed * @mdo_get_dev_stats: called when dev stats are read * @mdo_get_tx_sc_stats: called when TX SC stats are read * @mdo_get_tx_sa_stats: called when TX SA stats are read * @mdo_get_rx_sc_stats: called when RX SC stats are read * @mdo_get_rx_sa_stats: called when RX SA stats are read * @mdo_insert_tx_tag: called to insert the TX tag * @needed_headroom: number of bytes reserved at the beginning of the sk_buff * for the TX tag * @needed_tailroom: number of bytes reserved at the end of the sk_buff for the * TX tag * @rx_uses_md_dst: whether MACsec device offload supports sk_buff md_dst */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); /* Statistics */ int (*mdo_get_dev_stats)(struct macsec_context *ctx); int (*mdo_get_tx_sc_stats)(struct macsec_context *ctx); int (*mdo_get_tx_sa_stats)(struct macsec_context *ctx); int (*mdo_get_rx_sc_stats)(struct macsec_context *ctx); int (*mdo_get_rx_sa_stats)(struct macsec_context *ctx); /* Offload tag */ int (*mdo_insert_tx_tag)(struct phy_device *phydev, struct sk_buff *skb); unsigned int needed_headroom; unsigned int needed_tailroom; bool rx_uses_md_dst;};
void macsec_pn_wrapped(struct macsec_secy *secy, struct macsec_tx_sa *tx_sa);static inline bool macsec_send_sci(const struct macsec_secy *secy){ const struct macsec_tx_sc *tx_sc = &secy->tx_sc;
return tx_sc->send_sci || (secy->n_rx_sc > 1 && !tx_sc->end_station && !tx_sc->scb);}struct net_device *macsec_get_real_dev(const struct net_device *dev);bool macsec_netdev_is_offloaded(struct net_device *dev);
static inline void *macsec_netdev_priv(const struct net_device *dev){#if IS_ENABLED(CONFIG_VLAN_8021Q) if (is_vlan_dev(dev)) return netdev_priv(vlan_dev_priv(dev)->real_dev);#endif return netdev_priv(dev);}
static inline u64 sci_to_cpu(sci_t sci){ return be64_to_cpu((__force __be64)sci);}
#endif /* _NET_MACSEC_H_ */