ieee80211_crypto.c File Reference

#include <sys/cdefs.h>
#include "opt_wlan.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/ethernet.h>
#include <net80211/ieee80211_var.h>

Include dependency graph for ieee80211_crypto.c:

Go to the source code of this file.

Macros
#define	IEEE80211_WEP_HDRLEN   (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN)
#define	IEEE80211_WEP_MINLEN

Functions
	__FBSDID ("$FreeBSD$")
	MALLOC_DEFINE (M_80211_CRYPTO, "80211crypto", "802.11 crypto state")
static int	_ieee80211_crypto_delkey (struct ieee80211vap *, struct ieee80211_key *)
static int	null_key_alloc (struct ieee80211vap *vap, struct ieee80211_key *k, ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
static int	null_key_delete (struct ieee80211vap *vap, const struct ieee80211_key *k)
static int	null_key_set (struct ieee80211vap *vap, const struct ieee80211_key *k)
static void	null_key_update (struct ieee80211vap *vap)
static __inline void	cipher_detach (struct ieee80211_key *key)
static __inline void *	cipher_attach (struct ieee80211vap *vap, struct ieee80211_key *key)
static __inline int	dev_key_alloc (struct ieee80211vap *vap, struct ieee80211_key *key, ieee80211_keyix *keyix, ieee80211_keyix *rxkeyix)
static __inline int	dev_key_delete (struct ieee80211vap *vap, const struct ieee80211_key *key)
static __inline int	dev_key_set (struct ieee80211vap *vap, const struct ieee80211_key *key)
void	ieee80211_crypto_attach (struct ieee80211com *ic)
void	ieee80211_crypto_detach (struct ieee80211com *ic)
void	ieee80211_crypto_vattach (struct ieee80211vap *vap)
void	ieee80211_crypto_vdetach (struct ieee80211vap *vap)
void	ieee80211_crypto_register (const struct ieee80211_cipher *cip)
void	ieee80211_crypto_unregister (const struct ieee80211_cipher *cip)
int	ieee80211_crypto_available (u_int cipher)
	CTASSERT ((IEEE80211_KEY_COMMON &IEEE80211_KEY_DEVICE)==0)
int	ieee80211_crypto_newkey (struct ieee80211vap *vap, int cipher, int flags, struct ieee80211_key *key)
int	ieee80211_crypto_delkey (struct ieee80211vap *vap, struct ieee80211_key *key)
void	ieee80211_crypto_delglobalkeys (struct ieee80211vap *vap)
int	ieee80211_crypto_setkey (struct ieee80211vap *vap, struct ieee80211_key *key)
int	ieee80211_crypto_get_key_wepidx (const struct ieee80211vap *vap, const struct ieee80211_key *k)
uint8_t	ieee80211_crypto_get_keyid (struct ieee80211vap *vap, struct ieee80211_key *k)
struct ieee80211_key *	ieee80211_crypto_get_txkey (struct ieee80211_node *ni, struct mbuf *m)
struct ieee80211_key *	ieee80211_crypto_encap (struct ieee80211_node *ni, struct mbuf *m)
int	ieee80211_crypto_decap (struct ieee80211_node *ni, struct mbuf *m, int hdrlen, struct ieee80211_key **key)
int	ieee80211_crypto_demic (struct ieee80211vap *vap, struct ieee80211_key *k, struct mbuf *m, int force)
static void	load_ucastkey (void *arg, struct ieee80211_node *ni)
void	ieee80211_crypto_reload_keys (struct ieee80211com *ic)
void	ieee80211_crypto_set_deftxkey (struct ieee80211vap *vap, ieee80211_keyix kid)

Variables
static const struct ieee80211_cipher *	ciphers [IEEE80211_CIPHER_MAX]
static const char *	cipher_modnames [IEEE80211_CIPHER_MAX]

Macro Definition Documentation

IEEE80211_WEP_HDRLEN

#define IEEE80211_WEP_HDRLEN   (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN)

IEEE80211_WEP_MINLEN

#define IEEE80211_WEP_MINLEN

Value:

        (sizeof(struct ieee80211_frame) + \
        IEEE80211_WEP_HDRLEN + IEEE80211_WEP_CRCLEN)

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

_ieee80211_crypto_delkey()

static int _ieee80211_crypto_delkey ( struct ieee80211vap *  vap, struct ieee80211_key *  key  )

static

Definition at line 423 of file ieee80211_crypto.c.

References cipher_detach(), dev_key_delete(), ieee80211_cipher::ic_name, ieee80211_crypto_resetkey(), IEEE80211_DPRINTF, IEEE80211_KEY_DEVKEY, IEEE80211_KEYIX_NONE, IEEE80211_MSG_CRYPTO, IEEE80211_NONQOS_TID, ieee80211_stats::is_crypto_delkey, ieee80211vap::iv_stats, ieee80211_key::wk_cipher, ieee80211_key::wk_flags, ieee80211_key::wk_keyix, ieee80211_key::wk_keylen, ieee80211_key::wk_keyrsc, and ieee80211_key::wk_keytsc.

Referenced by ieee80211_crypto_delglobalkeys(), and ieee80211_crypto_delkey().

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cipher_attach()

static __inline void * cipher_attach ( struct ieee80211vap *  vap, struct ieee80211_key *  key  )

static

Definition at line 110 of file ieee80211_crypto.c.

References ieee80211_cipher::ic_attach, and ieee80211_key::wk_cipher.

cipher_detach()

static __inline void cipher_detach ( struct ieee80211_key *  key )

static

Definition at line 104 of file ieee80211_crypto.c.

References ieee80211_cipher::ic_detach, and ieee80211_key::wk_cipher.

Referenced by _ieee80211_crypto_delkey(), and ieee80211_crypto_newkey().

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CTASSERT()

CTASSERT

(

(IEEE80211_KEY_COMMON &IEEE80211_KEY_DEVICE)

= =0

)

dev_key_alloc()

static __inline int dev_key_alloc ( struct ieee80211vap *  vap, struct ieee80211_key *  key, ieee80211_keyix *  keyix, ieee80211_keyix *  rxkeyix  )

static

Definition at line 119 of file ieee80211_crypto.c.

References ieee80211vap::iv_key_alloc.

Referenced by ieee80211_crypto_newkey().

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dev_key_delete()

static __inline int dev_key_delete ( struct ieee80211vap *  vap, const struct ieee80211_key *  key  )

static

Definition at line 127 of file ieee80211_crypto.c.

References ieee80211vap::iv_key_delete.

Referenced by _ieee80211_crypto_delkey().

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dev_key_set()

static __inline int dev_key_set ( struct ieee80211vap *  vap, const struct ieee80211_key *  key  )

static

Definition at line 134 of file ieee80211_crypto.c.

References ieee80211vap::iv_key_set.

Referenced by ieee80211_crypto_reload_keys(), ieee80211_crypto_setkey(), and load_ucastkey().

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ieee80211_crypto_attach()

void ieee80211_crypto_attach

(

struct ieee80211com *

ic

)

Definition at line 143 of file ieee80211_crypto.c.

References ciphers, IEEE80211_CIPHER_NONE, and ieee80211_cipher_none.

Referenced by ieee80211_ifattach().

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ieee80211_crypto_available()

int ieee80211_crypto_available

(

u_int

cipher

)

Definition at line 232 of file ieee80211_crypto.c.

References ciphers, and IEEE80211_CIPHER_MAX.

ieee80211_crypto_decap()

int ieee80211_crypto_decap	(	struct ieee80211_node *	ni,
		struct mbuf *	m,
		int	hdrlen,
		struct ieee80211_key **	key
	)

Definition at line 606 of file ieee80211_crypto.c.

References ieee80211_rx_stats::c_pktflags, ieee80211_frame::i_addr1, ieee80211_frame::i_addr2, ieee80211_cipher::ic_decap, ieee80211_cipher::ic_header, ieee80211_cipher::ic_name, IEEE80211_DPRINTF, ieee80211_get_rx_params_ptr(), IEEE80211_IS_MULTICAST, IEEE80211_KEY_UNDEFINED, IEEE80211_MSG_ANY, IEEE80211_MSG_CRYPTO, IEEE80211_NOTE_MAC, IEEE80211_RX_F_DECRYPTED, IEEE80211_RX_F_IV_STRIP, IEEE80211_WEP_IVLEN, IEEE80211_WEP_MINLEN, ieee80211_stats::is_rx_tooshort, ieee80211vap::iv_nw_keys, ieee80211vap::iv_stats, ieee80211_node::ni_ucastkey, ieee80211_node::ni_vap, and ieee80211_key::wk_cipher.

Referenced by adhoc_input(), hostap_input(), sta_input(), and wds_input().

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ieee80211_crypto_delglobalkeys()

void ieee80211_crypto_delglobalkeys

(

struct ieee80211vap *

vap

)

Definition at line 471 of file ieee80211_crypto.c.

References _ieee80211_crypto_delkey(), ieee80211_key_update_begin(), ieee80211_key_update_end(), IEEE80211_WEP_NKID, and ieee80211vap::iv_nw_keys.

Referenced by ieee80211_crypto_vdetach().

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ieee80211_crypto_delkey()

int ieee80211_crypto_delkey	(	struct ieee80211vap *	vap,
		struct ieee80211_key *	key
	)

Definition at line 457 of file ieee80211_crypto.c.

References _ieee80211_crypto_delkey(), ieee80211_key_update_begin(), and ieee80211_key_update_end().

Referenced by ieee80211_ioctl_delkey(), ieee80211_ioctl_set80211(), and ieee80211_node_delucastkey().

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ieee80211_crypto_demic()

int ieee80211_crypto_demic	(	struct ieee80211vap *	vap,
		struct ieee80211_key *	k,
		struct mbuf *	m,
		int	force
	)

Definition at line 701 of file ieee80211_crypto.c.

References ieee80211_rx_stats::c_pktflags, ieee80211_cipher::ic_demic, ieee80211_cipher::ic_miclen, ieee80211_get_rx_params_ptr(), ieee80211_notify_michael_failure(), IEEE80211_RX_F_DECRYPTED, IEEE80211_RX_F_FAIL_MIC, IEEE80211_RX_F_MMIC_STRIP, and ieee80211_key::wk_cipher.

Referenced by adhoc_input(), hostap_input(), sta_input(), and wds_input().

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ieee80211_crypto_detach()

void ieee80211_crypto_detach

(

struct ieee80211com *

ic

)

Definition at line 153 of file ieee80211_crypto.c.

Referenced by ieee80211_ifdetach().

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ieee80211_crypto_encap()

struct ieee80211_key * ieee80211_crypto_encap	(	struct ieee80211_node *	ni,
		struct mbuf *	m
	)

Definition at line 588 of file ieee80211_crypto.c.

References ieee80211_cipher::ic_encap, ieee80211_crypto_get_txkey(), and ieee80211_key::wk_cipher.

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ieee80211_crypto_get_key_wepidx()

int ieee80211_crypto_get_key_wepidx	(	const struct ieee80211vap *	vap,
		const struct ieee80211_key *	k
	)

Definition at line 532 of file ieee80211_crypto.c.

References IEEE80211_WEP_NKID, and ieee80211vap::iv_nw_keys.

Referenced by null_key_alloc().

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ieee80211_crypto_get_keyid()

uint8_t ieee80211_crypto_get_keyid	(	struct ieee80211vap *	vap,
		struct ieee80211_key *	k
	)

Definition at line 546 of file ieee80211_crypto.c.

References IEEE80211_WEP_NKID, and ieee80211vap::iv_nw_keys.

Referenced by ccmp_setiv(), none_encap(), tkip_setiv(), and wep_setiv().

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ieee80211_crypto_get_txkey()

struct ieee80211_key * ieee80211_crypto_get_txkey	(	struct ieee80211_node *	ni,
		struct mbuf *	m
	)

Definition at line 556 of file ieee80211_crypto.c.

References ieee80211_frame::i_addr1, IEEE80211_IS_MULTICAST, IEEE80211_KEY_UNDEFINED, IEEE80211_KEYIX_NONE, IEEE80211_MSG_CRYPTO, IEEE80211_NOTE_MAC, ieee80211_stats::is_tx_nodefkey, ieee80211vap::iv_def_txkey, ieee80211vap::iv_nw_keys, ieee80211vap::iv_stats, ieee80211_node::ni_ucastkey, and ieee80211_node::ni_vap.

Referenced by ieee80211_crypto_encap().

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ieee80211_crypto_newkey()

int ieee80211_crypto_newkey	(	struct ieee80211vap *	vap,
		int	cipher,
		int	flags,
		struct ieee80211_key *	key
	)

Definition at line 264 of file ieee80211_crypto.c.

References cipher_detach(), cipher_modnames, ciphers, dev_key_alloc(), ieee80211_cipher::ic_attach, ieee80211com::ic_cryptocaps, ieee80211_cipher::ic_name, IEEE80211_CIPHER_MAX, IEEE80211_CIPHER_TKIP, IEEE80211_CRYPTO_TKIPMIC, IEEE80211_DPRINTF, IEEE80211_KEY_COMMON, IEEE80211_KEY_DEVICE, IEEE80211_KEY_DEVKEY, IEEE80211_KEY_SWCRYPT, IEEE80211_KEY_SWMIC, ieee80211_load_module(), IEEE80211_MSG_CRYPTO, ieee80211_stats::is_crypto_attachfail, ieee80211_stats::is_crypto_badcipher, ieee80211_stats::is_crypto_keyfail, ieee80211_stats::is_crypto_nocipher, ieee80211vap::iv_ic, ieee80211vap::iv_stats, ieee80211_key::wk_cipher, ieee80211_key::wk_flags, ieee80211_key::wk_keyix, ieee80211_key::wk_private, and ieee80211_key::wk_rxkeyix.

Referenced by ieee80211_ioctl_set80211(), and ieee80211_ioctl_setkey().

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ieee80211_crypto_register()

void ieee80211_crypto_register

(

const struct ieee80211_cipher *

cip

)

Definition at line 195 of file ieee80211_crypto.c.

References ciphers, ieee80211_cipher::ic_cipher, ieee80211_cipher::ic_name, and IEEE80211_CIPHER_MAX.

ieee80211_crypto_reload_keys()

void ieee80211_crypto_reload_keys

(

struct ieee80211com *

ic

)

Definition at line 769 of file ieee80211_crypto.c.

References dev_key_set(), ieee80211com::ic_sta, ieee80211_iterate_nodes(), IEEE80211_KEY_DEVKEY, IEEE80211_S_RUN, IEEE80211_WEP_NKID, ieee80211vap::iv_nw_keys, ieee80211vap::iv_state, load_ucastkey(), and ieee80211_key::wk_flags.

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ieee80211_crypto_set_deftxkey()

void ieee80211_crypto_set_deftxkey	(	struct ieee80211vap *	vap,
		ieee80211_keyix	kid
	)

Definition at line 800 of file ieee80211_crypto.c.

References ieee80211vap::iv_update_deftxkey.

Referenced by ieee80211_ioctl_set80211(), and ieee80211_ioctl_setkey().

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ieee80211_crypto_setkey()

int ieee80211_crypto_setkey	(	struct ieee80211vap *	vap,
		struct ieee80211_key *	key
	)

Definition at line 489 of file ieee80211_crypto.c.

References dev_key_set(), ieee80211_cipher::ic_name, ieee80211_cipher::ic_setkey, IEEE80211_DPRINTF, IEEE80211_KEY_DEVKEY, IEEE80211_MSG_CRYPTO, IEEE80211_NONQOS_TID, ieee80211_stats::is_crypto_setkey_cipher, ieee80211_stats::is_crypto_setkey_nokey, ieee80211vap::iv_stats, ieee80211_key::wk_cipher, ieee80211_key::wk_flags, ieee80211_key::wk_keyix, ieee80211_key::wk_keylen, ieee80211_key::wk_keyrsc, ieee80211_key::wk_keytsc, and ieee80211_key::wk_macaddr.

Referenced by ieee80211_ioctl_set80211(), and ieee80211_ioctl_setkey().

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ieee80211_crypto_unregister()

void ieee80211_crypto_unregister

(

const struct ieee80211_cipher *

cip

)

Definition at line 214 of file ieee80211_crypto.c.

References ciphers, ieee80211_cipher::ic_cipher, ieee80211_cipher::ic_name, and IEEE80211_CIPHER_MAX.

ieee80211_crypto_vattach()

void ieee80211_crypto_vattach

(

struct ieee80211vap *

vap

)

Definition at line 161 of file ieee80211_crypto.c.

References ieee80211_crypto_resetkey(), IEEE80211_KEYIX_NONE, IEEE80211_WEP_NKID, ieee80211vap::iv_def_txkey, ieee80211vap::iv_key_alloc, ieee80211vap::iv_key_delete, ieee80211vap::iv_key_set, ieee80211vap::iv_key_update_begin, ieee80211vap::iv_key_update_end, ieee80211vap::iv_max_keyix, ieee80211vap::iv_nw_keys, null_key_alloc(), null_key_delete(), null_key_set(), and null_key_update().

Referenced by ieee80211_vap_setup().

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ieee80211_crypto_vdetach()

void ieee80211_crypto_vdetach

(

struct ieee80211vap *

vap

)

Definition at line 186 of file ieee80211_crypto.c.

References ieee80211_crypto_delglobalkeys().

Referenced by ieee80211_vap_detach().

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load_ucastkey()

static void load_ucastkey ( void *  arg, struct ieee80211_node *  ni  )

static

Definition at line 751 of file ieee80211_crypto.c.

References dev_key_set(), IEEE80211_KEY_DEVKEY, IEEE80211_S_RUN, ieee80211vap::iv_state, ieee80211_node::ni_ucastkey, ieee80211_node::ni_vap, and ieee80211_key::wk_flags.

Referenced by ieee80211_crypto_reload_keys().

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MALLOC_DEFINE()

MALLOC_DEFINE	(	M_80211_CRYPTO	,
		"80211crypto"	,
		"802.11 crypto state"
	)

null_key_alloc()

static int null_key_alloc ( struct ieee80211vap *  vap, struct ieee80211_key *  k, ieee80211_keyix *  keyix, ieee80211_keyix *  rxkeyix  )

static

Definition at line 64 of file ieee80211_crypto.c.

References ieee80211_crypto_get_key_wepidx(), IEEE80211_KEY_GROUP, IEEE80211_KEYIX_NONE, IEEE80211_WEP_NKID, ieee80211vap::iv_nw_keys, and ieee80211_key::wk_flags.

Referenced by ieee80211_crypto_vattach().

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null_key_delete()

static int null_key_delete ( struct ieee80211vap *  vap, const struct ieee80211_key *  k  )

static

Definition at line 89 of file ieee80211_crypto.c.

Referenced by ieee80211_crypto_vattach().

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null_key_set()

static int null_key_set ( struct ieee80211vap *  vap, const struct ieee80211_key *  k  )

static

Definition at line 94 of file ieee80211_crypto.c.

Referenced by ieee80211_crypto_vattach().

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null_key_update()

static void null_key_update ( struct ieee80211vap *  vap )

static

Definition at line 98 of file ieee80211_crypto.c.

Referenced by ieee80211_crypto_vattach().

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Variable Documentation

cipher_modnames

const char* cipher_modnames[IEEE80211_CIPHER_MAX]

static

Initial value:

= {
        [IEEE80211_CIPHER_WEP]     = "wlan_wep",
        [IEEE80211_CIPHER_TKIP]    = "wlan_tkip",
        [IEEE80211_CIPHER_AES_OCB] = "wlan_aes_ocb",
        [IEEE80211_CIPHER_AES_CCM] = "wlan_ccmp",
        [IEEE80211_CIPHER_TKIPMIC] = "#4",      
        [IEEE80211_CIPHER_CKIP]    = "wlan_ckip",
        [IEEE80211_CIPHER_NONE]    = "wlan_none",
}

Definition at line 238 of file ieee80211_crypto.c.

Referenced by ieee80211_crypto_newkey().

ciphers

const struct ieee80211_cipher* ciphers[IEEE80211_CIPHER_MAX]

static

Definition at line 58 of file ieee80211_crypto.c.

Referenced by ieee80211_crypto_attach(), ieee80211_crypto_available(), ieee80211_crypto_newkey(), ieee80211_crypto_register(), and ieee80211_crypto_unregister().