linux/net/mac802154/llsec.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2014 Fraunhofer ITWM
 *
 * Written by:
 * Phoebe Buckheister <[email protected]>
 */

#include <linux/err.h>
#include <linux/bug.h>
#include <linux/completion.h>
#include <linux/ieee802154.h>
#include <linux/rculist.h>

#include <crypto/aead.h>
#include <crypto/skcipher.h>

#include "ieee802154_i.h"
#include "llsec.h"

static void llsec_key_put(struct mac802154_llsec_key *key);
static bool llsec_key_id_equal(const struct ieee802154_llsec_key_id *a,
			       const struct ieee802154_llsec_key_id *b);

static void llsec_dev_free(struct mac802154_llsec_device *dev);

void mac802154_llsec_init(struct mac802154_llsec *sec)
{ … }

void mac802154_llsec_destroy(struct mac802154_llsec *sec)
{ … }

int mac802154_llsec_get_params(struct mac802154_llsec *sec,
			       struct ieee802154_llsec_params *params)
{ … }

int mac802154_llsec_set_params(struct mac802154_llsec *sec,
			       const struct ieee802154_llsec_params *params,
			       int changed)
{ … }

static struct mac802154_llsec_key*
llsec_key_alloc(const struct ieee802154_llsec_key *template)
{ … }

static void llsec_key_release(struct kref *ref)
{ … }

static struct mac802154_llsec_key*
llsec_key_get(struct mac802154_llsec_key *key)
{ … }

static void llsec_key_put(struct mac802154_llsec_key *key)
{ … }

static bool llsec_key_id_equal(const struct ieee802154_llsec_key_id *a,
			       const struct ieee802154_llsec_key_id *b)
{ … }

int mac802154_llsec_key_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *id,
			    const struct ieee802154_llsec_key *key)
{ … }

static void mac802154_llsec_key_del_rcu(struct rcu_head *rcu)
{ … }

int mac802154_llsec_key_del(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_key_id *key)
{ … }

static bool llsec_dev_use_shortaddr(__le16 short_addr)
{ … }

static u32 llsec_dev_hash_short(__le16 short_addr, __le16 pan_id)
{ … }

static u64 llsec_dev_hash_long(__le64 hwaddr)
{ … }

static struct mac802154_llsec_device*
llsec_dev_find_short(struct mac802154_llsec *sec, __le16 short_addr,
		     __le16 pan_id)
{ … }

static struct mac802154_llsec_device*
llsec_dev_find_long(struct mac802154_llsec *sec, __le64 hwaddr)
{ … }

static void llsec_dev_free(struct mac802154_llsec_device *dev)
{ … }

int mac802154_llsec_dev_add(struct mac802154_llsec *sec,
			    const struct ieee802154_llsec_device *dev)
{ … }

static void llsec_dev_free_rcu(struct rcu_head *rcu)
{ … }

int mac802154_llsec_dev_del(struct mac802154_llsec *sec, __le64 device_addr)
{ … }

static struct mac802154_llsec_device_key*
llsec_devkey_find(struct mac802154_llsec_device *dev,
		  const struct ieee802154_llsec_key_id *key)
{ … }

int mac802154_llsec_devkey_add(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key)
{ … }

int mac802154_llsec_devkey_del(struct mac802154_llsec *sec,
			       __le64 dev_addr,
			       const struct ieee802154_llsec_device_key *key)
{ … }

static struct mac802154_llsec_seclevel*
llsec_find_seclevel(const struct mac802154_llsec *sec,
		    const struct ieee802154_llsec_seclevel *sl)
{ … }

int mac802154_llsec_seclevel_add(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl)
{ … }

int mac802154_llsec_seclevel_del(struct mac802154_llsec *sec,
				 const struct ieee802154_llsec_seclevel *sl)
{ … }

static int llsec_recover_addr(struct mac802154_llsec *sec,
			      struct ieee802154_addr *addr)
{ … }

static struct mac802154_llsec_key*
llsec_lookup_key(struct mac802154_llsec *sec,
		 const struct ieee802154_hdr *hdr,
		 const struct ieee802154_addr *addr,
		 struct ieee802154_llsec_key_id *key_id)
{ … }

static void llsec_geniv(u8 iv[16], __le64 addr,
			const struct ieee802154_sechdr *sec)
{ … }

static int
llsec_do_encrypt_unauth(struct sk_buff *skb, const struct mac802154_llsec *sec,
			const struct ieee802154_hdr *hdr,
			struct mac802154_llsec_key *key)
{ … }

static struct crypto_aead*
llsec_tfm_by_len(struct mac802154_llsec_key *key, int authlen)
{ … }

static int
llsec_do_encrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
		      const struct ieee802154_hdr *hdr,
		      struct mac802154_llsec_key *key)
{ … }

static int llsec_do_encrypt(struct sk_buff *skb,
			    const struct mac802154_llsec *sec,
			    const struct ieee802154_hdr *hdr,
			    struct mac802154_llsec_key *key)
{ … }

int mac802154_llsec_encrypt(struct mac802154_llsec *sec, struct sk_buff *skb)
{ … }

static struct mac802154_llsec_device*
llsec_lookup_dev(struct mac802154_llsec *sec,
		 const struct ieee802154_addr *addr)
{ … }

static int
llsec_lookup_seclevel(const struct mac802154_llsec *sec,
		      u8 frame_type, u8 cmd_frame_id,
		      struct ieee802154_llsec_seclevel *rlevel)
{ … }

static int
llsec_do_decrypt_unauth(struct sk_buff *skb, const struct mac802154_llsec *sec,
			const struct ieee802154_hdr *hdr,
			struct mac802154_llsec_key *key, __le64 dev_addr)
{ … }

static int
llsec_do_decrypt_auth(struct sk_buff *skb, const struct mac802154_llsec *sec,
		      const struct ieee802154_hdr *hdr,
		      struct mac802154_llsec_key *key, __le64 dev_addr)
{ … }

static int
llsec_do_decrypt(struct sk_buff *skb, const struct mac802154_llsec *sec,
		 const struct ieee802154_hdr *hdr,
		 struct mac802154_llsec_key *key, __le64 dev_addr)
{ … }

static int
llsec_update_devkey_record(struct mac802154_llsec_device *dev,
			   const struct ieee802154_llsec_key_id *in_key)
{ … }

static int
llsec_update_devkey_info(struct mac802154_llsec_device *dev,
			 const struct ieee802154_llsec_key_id *in_key,
			 u32 frame_counter)
{ … }

int mac802154_llsec_decrypt(struct mac802154_llsec *sec, struct sk_buff *skb)
{ … }