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[PATCH] hostap: Replace crypto code with net/ieee80211 version

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Replace Host AP version of WEP, TKIP, CCMP implementation with
net/ieee80211 that has more or less identical implementation (since
it is based on the Host AP implementation). Remove Host AP specific
implementation and modules from drivers/net/wireless/hostap.

Signed-off-by: Jouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Jouni Malinen 2005-07-30 20:43:20 -07:00 committed by Jeff Garzik
parent ebed67d284
commit 62fe7e3781
16 changed files with 64 additions and 1795 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/net/wireless/hostap/Kconfig
View File

@ -7,9 +7,6 @@ config HOSTAP
Host AP mode that allows the card to act as an IEEE 802.11
access point.
In addition, this includes generic IEEE 802.11 code, e.g., for
WEP/TKIP/CCMP encryption that can be shared with other drivers.
See <http://hostap.epitest.fi/> for more information about the
Host AP driver configuration and tools. This site includes
information and tools (hostapd and wpa_supplicant) for WPA/WPA2
@ -22,36 +19,6 @@ config HOSTAP
The driver can be compiled as a module and it will be called
"hostap.ko".
config HOSTAP_WEP
tristate "IEEE 802.11 WEP encryption"
depends on HOSTAP
select CRYPTO
---help---
Software implementation of IEEE 802.11 WEP encryption.
This can be compiled as a modules and it will be called
"hostap_crypt_wep.ko".
config HOSTAP_TKIP
tristate "IEEE 802.11 TKIP encryption"
depends on HOSTAP
select CRYPTO
---help---
Software implementation of IEEE 802.11 TKIP encryption.
This can be compiled as a modules and it will be called
"hostap_crypt_tkip.ko".
config HOSTAP_CCMP
tristate "IEEE 802.11 CCMP encryption"
depends on HOSTAP
select CRYPTO
---help---
Software implementation of IEEE 802.11 CCMP encryption.
This can be compiled as a modules and it will be called
"hostap_crypt_ccmp.ko".
config HOSTAP_FIRMWARE
bool "Support downloading firmware images with Host AP driver"
depends on HOSTAP

3
drivers/net/wireless/hostap/Makefile
View File

@ -1,7 +1,4 @@
obj-$(CONFIG_HOSTAP) += hostap.o
obj-$(CONFIG_HOSTAP_WEP) += hostap_crypt_wep.o
obj-$(CONFIG_HOSTAP_TKIP) += hostap_crypt_tkip.o
obj-$(CONFIG_HOSTAP_CCMP) += hostap_crypt_ccmp.o
obj-$(CONFIG_HOSTAP_CS) += hostap_cs.o
obj-$(CONFIG_HOSTAP_PLX) += hostap_plx.o

12
drivers/net/wireless/hostap/hostap.c
View File

@ -4,7 +4,7 @@
*
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2004, Jouni Malinen <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -34,16 +34,12 @@
#include "hostap_80211.h"
#include "hostap_ap.h"
#include "hostap.h"
#include "hostap_crypt.h"
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP common routines");
MODULE_LICENSE("GPL");
MODULE_VERSION(PRISM2_VERSION);
/* Old hostap_crypt module is now part of hostap module. */
#include "hostap_crypt.c"
#define TX_TIMEOUT (2 * HZ)
#define PRISM2_MAX_FRAME_SIZE 2304
@ -66,7 +62,7 @@ static int prism2_ap_translate_scan(struct net_device *dev, char *buffer);
static int prism2_hostapd(struct ap_data *ap,
struct prism2_hostapd_param *param);
static void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
struct prism2_crypt_data ***crypt);
struct ieee80211_crypt_data ***crypt);
static void ap_control_kickall(struct ap_data *ap);
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
static int ap_control_add_mac(struct mac_restrictions *mac_restrictions,
@ -1156,8 +1152,6 @@ struct proc_dir_entry *hostap_proc;
static int __init hostap_init(void)
{
hostap_crypto_init();
if (proc_net != NULL) {
hostap_proc = proc_mkdir("hostap", proc_net);
if (!hostap_proc)
@ -1176,8 +1170,6 @@ static void __exit hostap_exit(void)
hostap_proc = NULL;
remove_proc_entry("hostap", proc_net);
}
hostap_crypto_deinit();
}

2
drivers/net/wireless/hostap/hostap_80211.h
View File

@ -101,7 +101,7 @@ void hostap_dump_tx_80211(const char *name, struct sk_buff *skb);
int hostap_data_start_xmit(struct sk_buff *skb, struct net_device *dev);
int hostap_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev);
struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
struct prism2_crypt_data *crypt);
struct ieee80211_crypt_data *crypt);
int hostap_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
#endif /* HOSTAP_80211_H */

6
drivers/net/wireless/hostap/hostap_80211_rx.c
View File

@ -613,7 +613,7 @@ static int hostap_is_eapol_frame(local_info_t *local, struct sk_buff *skb)
/* Called only as a tasklet (software IRQ) */
static inline int
hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
struct prism2_crypt_data *crypt)
struct ieee80211_crypt_data *crypt)
{
struct hostap_ieee80211_hdr *hdr;
int res, hdrlen;
@ -652,7 +652,7 @@ hostap_rx_frame_decrypt(local_info_t *local, struct sk_buff *skb,
/* Called only as a tasklet (software IRQ) */
static inline int
hostap_rx_frame_decrypt_msdu(local_info_t *local, struct sk_buff *skb,
int keyidx, struct prism2_crypt_data *crypt)
int keyidx, struct ieee80211_crypt_data *crypt)
{
struct hostap_ieee80211_hdr *hdr;
int res, hdrlen;
@ -698,7 +698,7 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
int from_assoc_ap = 0;
u8 dst[ETH_ALEN];
u8 src[ETH_ALEN];
struct prism2_crypt_data *crypt = NULL;
struct ieee80211_crypt_data *crypt = NULL;
void *sta = NULL;
int keyidx = 0;

2
drivers/net/wireless/hostap/hostap_80211_tx.c
View File

@ -284,7 +284,7 @@ int hostap_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Called only from software IRQ */
struct sk_buff * hostap_tx_encrypt(struct sk_buff *skb,
struct prism2_crypt_data *crypt)
struct ieee80211_crypt_data *crypt)
{
struct hostap_interface *iface;
local_info_t *local;

13
drivers/net/wireless/hostap/hostap_ap.c
View File

@ -2,7 +2,7 @@
* Intersil Prism2 driver with Host AP (software access point) support
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This file is to be included into hostap.c when S/W AP functionality is
* compiled.
@ -1206,7 +1206,7 @@ static void prism2_check_tx_rates(struct sta_info *sta)
static void ap_crypt_init(struct ap_data *ap)
{
ap->crypt = hostap_get_crypto_ops("WEP");
ap->crypt = ieee80211_get_crypto_ops("WEP");
if (ap->crypt) {
if (ap->crypt->init) {
@ -1224,7 +1224,7 @@ static void ap_crypt_init(struct ap_data *ap)
if (ap->crypt == NULL) {
printk(KERN_WARNING "AP could not initialize WEP: load module "
"hostap_crypt_wep.o\n");
"ieee80211_crypt_wep.ko\n");
}
}
@ -1293,7 +1293,7 @@ static void handle_authen(local_info_t *local, struct sk_buff *skb,
u16 auth_alg, auth_transaction, status_code, *pos;
u16 resp = WLAN_STATUS_SUCCESS, fc;
struct sta_info *sta = NULL;
struct prism2_crypt_data *crypt;
struct ieee80211_crypt_data *crypt;
char *txt = "";
len = skb->len - IEEE80211_MGMT_HDR_LEN;
@ -3058,7 +3058,8 @@ ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
/* Called only as a tasklet (software IRQ) */
int hostap_handle_sta_crypto(local_info_t *local,
struct hostap_ieee80211_hdr *hdr,
struct prism2_crypt_data **crypt, void **sta_ptr)
struct ieee80211_crypt_data **crypt,
void **sta_ptr)
{
struct sta_info *sta;
@ -3206,7 +3207,7 @@ void hostap_update_rates(local_info_t *local)
static void * ap_crypt_get_ptrs(struct ap_data *ap, u8 *addr, int permanent,
struct prism2_crypt_data ***crypt)
struct ieee80211_crypt_data ***crypt)
{
struct sta_info *sta;

9
drivers/net/wireless/hostap/hostap_ap.h
View File

@ -81,7 +81,7 @@ struct sta_info {
u32 tx_since_last_failure;
u32 tx_consecutive_exc;
struct prism2_crypt_data *crypt;
struct ieee80211_crypt_data *crypt;
int ap; /* whether this station is an AP */
@ -216,7 +216,7 @@ struct ap_data {
/* WEP operations for generating challenges to be used with shared key
* authentication */
struct hostap_crypto_ops *crypt;
struct ieee80211_crypto_ops *crypt;
void *crypt_priv;
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
};
@ -236,7 +236,7 @@ typedef enum {
struct hostap_tx_data {
struct sk_buff *skb;
int host_encrypt;
struct prism2_crypt_data *crypt;
struct ieee80211_crypt_data *crypt;
void *sta_ptr;
};
ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx);
@ -253,7 +253,8 @@ ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
int wds);
int hostap_handle_sta_crypto(local_info_t *local,
struct hostap_ieee80211_hdr *hdr,
struct prism2_crypt_data **crypt, void **sta_ptr);
struct ieee80211_crypt_data **crypt,
void **sta_ptr);
int hostap_is_sta_assoc(struct ap_data *ap, u8 *sta_addr);
int hostap_is_sta_authorized(struct ap_data *ap, u8 *sta_addr);
int hostap_add_sta(struct ap_data *ap, u8 *sta_addr);

167
drivers/net/wireless/hostap/hostap_crypt.c
View File

@ -1,167 +0,0 @@
/*
* Host AP crypto routines
*
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*/
struct hostap_crypto_alg {
struct list_head list;
struct hostap_crypto_ops *ops;
};
struct hostap_crypto {
struct list_head algs;
spinlock_t lock;
};
static struct hostap_crypto *hcrypt;
int hostap_register_crypto_ops(struct hostap_crypto_ops *ops)
{
unsigned long flags;
struct hostap_crypto_alg *alg;
if (hcrypt == NULL)
return -1;
alg = (struct hostap_crypto_alg *) kmalloc(sizeof(*alg), GFP_KERNEL);
if (alg == NULL)
return -ENOMEM;
memset(alg, 0, sizeof(*alg));
alg->ops = ops;
spin_lock_irqsave(&hcrypt->lock, flags);
list_add(&alg->list, &hcrypt->algs);
spin_unlock_irqrestore(&hcrypt->lock, flags);
printk(KERN_DEBUG "hostap_crypt: registered algorithm '%s'\n",
ops->name);
return 0;
}
int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops)
{
unsigned long flags;
struct list_head *ptr;
struct hostap_crypto_alg *del_alg = NULL;
if (hcrypt == NULL)
return -1;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct hostap_crypto_alg *alg =
(struct hostap_crypto_alg *) ptr;
if (alg->ops == ops) {
list_del(&alg->list);
del_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (del_alg) {
printk(KERN_DEBUG "hostap_crypt: unregistered algorithm "
"'%s'\n", ops->name);
kfree(del_alg);
}
return del_alg ? 0 : -1;
}
struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name)
{
unsigned long flags;
struct list_head *ptr;
struct hostap_crypto_alg *found_alg = NULL;
if (hcrypt == NULL)
return NULL;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct hostap_crypto_alg *alg =
(struct hostap_crypto_alg *) ptr;
if (strcmp(alg->ops->name, name) == 0) {
found_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (found_alg)
return found_alg->ops;
else
return NULL;
}
static void * hostap_crypt_null_init(int keyidx) { return (void *) 1; }
static void hostap_crypt_null_deinit(void *priv) {}
static struct hostap_crypto_ops hostap_crypt_null = {
.name = "NULL",
.init = hostap_crypt_null_init,
.deinit = hostap_crypt_null_deinit,
.encrypt_mpdu = NULL,
.decrypt_mpdu = NULL,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = NULL,
.get_key = NULL,
.extra_prefix_len = 0,
.extra_postfix_len = 0
};
static int __init hostap_crypto_init(void)
{
hcrypt = (struct hostap_crypto *) kmalloc(sizeof(*hcrypt), GFP_KERNEL);
if (hcrypt == NULL)
return -ENOMEM;
memset(hcrypt, 0, sizeof(*hcrypt));
INIT_LIST_HEAD(&hcrypt->algs);
spin_lock_init(&hcrypt->lock);
(void) hostap_register_crypto_ops(&hostap_crypt_null);
return 0;
}
static void __exit hostap_crypto_deinit(void)
{
struct list_head *ptr, *n;
if (hcrypt == NULL)
return;
for (ptr = hcrypt->algs.next, n = ptr->next; ptr != &hcrypt->algs;
ptr = n, n = ptr->next) {
struct hostap_crypto_alg *alg =
(struct hostap_crypto_alg *) ptr;
list_del(ptr);
printk(KERN_DEBUG "hostap_crypt: unregistered algorithm "
"'%s' (deinit)\n", alg->ops->name);
kfree(alg);
}
kfree(hcrypt);
}
EXPORT_SYMBOL(hostap_register_crypto_ops);
EXPORT_SYMBOL(hostap_unregister_crypto_ops);
EXPORT_SYMBOL(hostap_get_crypto_ops);

50
drivers/net/wireless/hostap/hostap_crypt.h
View File

@ -1,50 +0,0 @@
#ifndef PRISM2_CRYPT_H
#define PRISM2_CRYPT_H
struct hostap_crypto_ops {
char *name;
/* init new crypto context (e.g., allocate private data space,
* select IV, etc.); returns NULL on failure or pointer to allocated
* private data on success */
void * (*init)(int keyidx);
/* deinitialize crypto context and free allocated private data */
void (*deinit)(void *priv);
/* encrypt/decrypt return < 0 on error or >= 0 on success. The return
* value from decrypt_mpdu is passed as the keyidx value for
* decrypt_msdu. skb must have enough head and tail room for the
* encryption; if not, error will be returned; these functions are
* called for all MPDUs (i.e., fragments).
*/
int (*encrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_mpdu)(struct sk_buff *skb, int hdr_len, void *priv);
/* These functions are called for full MSDUs, i.e. full frames.
* These can be NULL if full MSDU operations are not needed. */
int (*encrypt_msdu)(struct sk_buff *skb, int hdr_len, void *priv);
int (*decrypt_msdu)(struct sk_buff *skb, int keyidx, int hdr_len,
void *priv);
int (*set_key)(void *key, int len, u8 *seq, void *priv);
int (*get_key)(void *key, int len, u8 *seq, void *priv);
/* procfs handler for printing out key information and possible
* statistics */
char * (*print_stats)(char *p, void *priv);
/* maximum number of bytes added by encryption; encrypt buf is
* allocated with extra_prefix_len bytes, copy of in_buf, and
* extra_postfix_len; encrypt need not use all this space, but
* the result must start at the beginning of the buffer and correct
* length must be returned */
int extra_prefix_len, extra_postfix_len;
};
int hostap_register_crypto_ops(struct hostap_crypto_ops *ops);
int hostap_unregister_crypto_ops(struct hostap_crypto_ops *ops);
struct hostap_crypto_ops * hostap_get_crypto_ops(const char *name);
#endif /* PRISM2_CRYPT_H */

487
drivers/net/wireless/hostap/hostap_crypt_ccmp.c
View File

@ -1,487 +0,0 @@
/*
* Host AP crypt: host-based CCMP encryption implementation for Host AP driver
*
* Copyright (c) 2003-2004, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <asm/string.h>
#include "hostap_crypt.h"
#include "hostap_wlan.h"
#include "hostap_80211.h"
#ifndef CONFIG_CRYPTO
#error CONFIG_CRYPTO is required to build this module.
#endif
#include <linux/crypto.h>
#include <asm/scatterlist.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: CCMP");
MODULE_LICENSE("GPL");
MODULE_VERSION(PRISM2_VERSION);
#define AES_BLOCK_LEN 16
#define CCMP_HDR_LEN 8
#define CCMP_MIC_LEN 8
#define CCMP_TK_LEN 16
#define CCMP_PN_LEN 6
struct hostap_ccmp_data {
u8 key[CCMP_TK_LEN];
int key_set;
u8 tx_pn[CCMP_PN_LEN];
u8 rx_pn[CCMP_PN_LEN];
u32 dot11RSNAStatsCCMPFormatErrors;
u32 dot11RSNAStatsCCMPReplays;
u32 dot11RSNAStatsCCMPDecryptErrors;
int key_idx;
struct crypto_tfm *tfm;
/* scratch buffers for virt_to_page() (crypto API) */
u8 tx_b0[AES_BLOCK_LEN], tx_b[AES_BLOCK_LEN],
tx_e[AES_BLOCK_LEN], tx_s0[AES_BLOCK_LEN];
u8 rx_b0[AES_BLOCK_LEN], rx_b[AES_BLOCK_LEN], rx_a[AES_BLOCK_LEN];
};
void hostap_ccmp_aes_encrypt(struct crypto_tfm *tfm,
const u8 pt[16], u8 ct[16])
{
struct scatterlist src, dst;
src.page = virt_to_page(pt);
src.offset = offset_in_page(pt);
src.length = AES_BLOCK_LEN;
dst.page = virt_to_page(ct);
dst.offset = offset_in_page(ct);
dst.length = AES_BLOCK_LEN;
crypto_cipher_encrypt(tfm, &dst, &src, AES_BLOCK_LEN);
}
static void * hostap_ccmp_init(int key_idx)
{
struct hostap_ccmp_data *priv;
if (!try_module_get(THIS_MODULE))
return NULL;
priv = (struct hostap_ccmp_data *) kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL) {
goto fail;
}
memset(priv, 0, sizeof(*priv));
priv->key_idx = key_idx;
priv->tfm = crypto_alloc_tfm("aes", 0);
if (priv->tfm == NULL) {
printk(KERN_DEBUG "hostap_crypt_ccmp: could not allocate "
"crypto API aes\n");
goto fail;
}
return priv;
fail:
if (priv) {
if (priv->tfm)
crypto_free_tfm(priv->tfm);
kfree(priv);
}
module_put(THIS_MODULE);
return NULL;
}
static void hostap_ccmp_deinit(void *priv)
{
struct hostap_ccmp_data *_priv = priv;
if (_priv && _priv->tfm)
crypto_free_tfm(_priv->tfm);
kfree(priv);
module_put(THIS_MODULE);
}
static inline void xor_block(u8 *b, u8 *a, size_t len)
{
int i;
for (i = 0; i < len; i++)
b[i] ^= a[i];
}
static void ccmp_init_blocks(struct crypto_tfm *tfm,
struct hostap_ieee80211_hdr *hdr,
u8 *pn, size_t dlen, u8 *b0, u8 *auth,
u8 *s0)
{
u8 *pos, qc = 0;
size_t aad_len;
u16 fc;
int a4_included, qc_included;
u8 aad[2 * AES_BLOCK_LEN];
fc = le16_to_cpu(hdr->frame_control);
a4_included = ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
(WLAN_FC_TODS | WLAN_FC_FROMDS));
qc_included = ((HOSTAP_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) &&
(HOSTAP_FC_GET_STYPE(fc) & 0x08));
aad_len = 22;
if (a4_included)
aad_len += 6;
if (qc_included) {
pos = (u8 *) &hdr->addr4;
if (a4_included)
pos += 6;
qc = *pos & 0x0f;
aad_len += 2;
}
/* CCM Initial Block:
* Flag (Include authentication header, M=3 (8-octet MIC),
* L=1 (2-octet Dlen))
* Nonce: 0x00 | A2 | PN
* Dlen */
b0[0] = 0x59;
b0[1] = qc;
memcpy(b0 + 2, hdr->addr2, ETH_ALEN);
memcpy(b0 + 8, pn, CCMP_PN_LEN);
b0[14] = (dlen >> 8) & 0xff;
b0[15] = dlen & 0xff;
/* AAD:
* FC with bits 4..6 and 11..13 masked to zero; 14 is always one
* A1 | A2 | A3
* SC with bits 4..15 (seq#) masked to zero
* A4 (if present)
* QC (if present)
*/
pos = (u8 *) hdr;
aad[0] = 0; /* aad_len >> 8 */
aad[1] = aad_len & 0xff;
aad[2] = pos[0] & 0x8f;
aad[3] = pos[1] & 0xc7;
memcpy(aad + 4, hdr->addr1, 3 * ETH_ALEN);
pos = (u8 *) &hdr->seq_ctrl;
aad[22] = pos[0] & 0x0f;
aad[23] = 0; /* all bits masked */
memset(aad + 24, 0, 8);
if (a4_included)
memcpy(aad + 24, hdr->addr4, ETH_ALEN);
if (qc_included) {
aad[a4_included ? 30 : 24] = qc;
/* rest of QC masked */
}
/* Start with the first block and AAD */
hostap_ccmp_aes_encrypt(tfm, b0, auth);
xor_block(auth, aad, AES_BLOCK_LEN);
hostap_ccmp_aes_encrypt(tfm, auth, auth);
xor_block(auth, &aad[AES_BLOCK_LEN], AES_BLOCK_LEN);
hostap_ccmp_aes_encrypt(tfm, auth, auth);
b0[0] &= 0x07;
b0[14] = b0[15] = 0;
hostap_ccmp_aes_encrypt(tfm, b0, s0);
}
static int hostap_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct hostap_ccmp_data *key = priv;
int data_len, i, blocks, last, len;
u8 *pos, *mic;
struct hostap_ieee80211_hdr *hdr;
u8 *b0 = key->tx_b0;
u8 *b = key->tx_b;
u8 *e = key->tx_e;
u8 *s0 = key->tx_s0;
if (skb_headroom(skb) < CCMP_HDR_LEN ||
skb_tailroom(skb) < CCMP_MIC_LEN ||
skb->len < hdr_len)
return -1;
data_len = skb->len - hdr_len;
pos = skb_push(skb, CCMP_HDR_LEN);
memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
pos += hdr_len;
mic = skb_put(skb, CCMP_MIC_LEN);
i = CCMP_PN_LEN - 1;
while (i >= 0) {
key->tx_pn[i]++;
if (key->tx_pn[i] != 0)
break;
i--;
}
*pos++ = key->tx_pn[5];
*pos++ = key->tx_pn[4];
*pos++ = 0;
*pos++ = (key->key_idx << 6) | (1 << 5) /* Ext IV included */;
*pos++ = key->tx_pn[3];
*pos++ = key->tx_pn[2];
*pos++ = key->tx_pn[1];
*pos++ = key->tx_pn[0];
hdr = (struct hostap_ieee80211_hdr *) skb->data;
ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len, b0, b, s0);
blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
len = (i == blocks && last) ? last : AES_BLOCK_LEN;
/* Authentication */
xor_block(b, pos, len);
hostap_ccmp_aes_encrypt(key->tfm, b, b);
/* Encryption, with counter */
b0[14] = (i >> 8) & 0xff;
b0[15] = i & 0xff;
hostap_ccmp_aes_encrypt(key->tfm, b0, e);
xor_block(pos, e, len);
pos += len;
}
for (i = 0; i < CCMP_MIC_LEN; i++)
mic[i] = b[i] ^ s0[i];
return 0;
}
static int hostap_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct hostap_ccmp_data *key = priv;
u8 keyidx, *pos;
struct hostap_ieee80211_hdr *hdr;
u8 *b0 = key->rx_b0;
u8 *b = key->rx_b;
u8 *a = key->rx_a;
u8 pn[6];
int i, blocks, last, len;
size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN - CCMP_MIC_LEN;
u8 *mic = skb->data + skb->len - CCMP_MIC_LEN;
if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
key->dot11RSNAStatsCCMPFormatErrors++;
return -1;
}
hdr = (struct hostap_ieee80211_hdr *) skb->data;
pos = skb->data + hdr_len;
keyidx = pos[3];
if (!(keyidx & (1 << 5))) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: received packet without ExtIV"
" flag from " MACSTR "\n", MAC2STR(hdr->addr2));
}
key->dot11RSNAStatsCCMPFormatErrors++;
return -2;
}
keyidx >>= 6;
if (key->key_idx != keyidx) {
printk(KERN_DEBUG "CCMP: RX tkey->key_idx=%d frame "
"keyidx=%d priv=%p\n", key->key_idx, keyidx, priv);
return -6;
}
if (!key->key_set) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: received packet from " MACSTR
" with keyid=%d that does not have a configured"
" key\n", MAC2STR(hdr->addr2), keyidx);
}
return -3;
}
pn[0] = pos[7];
pn[1] = pos[6];
pn[2] = pos[5];
pn[3] = pos[4];
pn[4] = pos[1];
pn[5] = pos[0];
pos += 8;
if (memcmp(pn, key->rx_pn, CCMP_PN_LEN) <= 0) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: replay detected: STA=" MACSTR
" previous PN %02x%02x%02x%02x%02x%02x "
"received PN %02x%02x%02x%02x%02x%02x\n",
MAC2STR(hdr->addr2), MAC2STR(key->rx_pn),
MAC2STR(pn));
}
key->dot11RSNAStatsCCMPReplays++;
return -4;
}
ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b);
xor_block(mic, b, CCMP_MIC_LEN);
blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
last = data_len % AES_BLOCK_LEN;
for (i = 1; i <= blocks; i++) {
len = (i == blocks && last) ? last : AES_BLOCK_LEN;
/* Decrypt, with counter */
b0[14] = (i >> 8) & 0xff;
b0[15] = i & 0xff;
hostap_ccmp_aes_encrypt(key->tfm, b0, b);
xor_block(pos, b, len);
/* Authentication */
xor_block(a, pos, len);
hostap_ccmp_aes_encrypt(key->tfm, a, a);
pos += len;
}
if (memcmp(mic, a, CCMP_MIC_LEN) != 0) {
if (net_ratelimit()) {
printk(KERN_DEBUG "CCMP: decrypt failed: STA="
MACSTR "\n", MAC2STR(hdr->addr2));
}
key->dot11RSNAStatsCCMPDecryptErrors++;
return -5;
}
memcpy(key->rx_pn, pn, CCMP_PN_LEN);
/* Remove hdr and MIC */
memmove(skb->data + CCMP_HDR_LEN, skb->data, hdr_len);
skb_pull(skb, CCMP_HDR_LEN);
skb_trim(skb, skb->len - CCMP_MIC_LEN);
return keyidx;
}
static int hostap_ccmp_set_key(void *key, int len, u8 *seq, void *priv)
{
struct hostap_ccmp_data *data = priv;
int keyidx;
struct crypto_tfm *tfm = data->tfm;
keyidx = data->key_idx;
memset(data, 0, sizeof(*data));
data->key_idx = keyidx;
data->tfm = tfm;
if (len == CCMP_TK_LEN) {
memcpy(data->key, key, CCMP_TK_LEN);
data->key_set = 1;
if (seq) {
data->rx_pn[0] = seq[5];
data->rx_pn[1] = seq[4];
data->rx_pn[2] = seq[3];
data->rx_pn[3] = seq[2];
data->rx_pn[4] = seq[1];
data->rx_pn[5] = seq[0];
}
crypto_cipher_setkey(data->tfm, data->key, CCMP_TK_LEN);
} else if (len == 0) {
data->key_set = 0;
} else
return -1;
return 0;
}
static int hostap_ccmp_get_key(void *key, int len, u8 *seq, void *priv)
{
struct hostap_ccmp_data *data = priv;
if (len < CCMP_TK_LEN)
return -1;
if (!data->key_set)
return 0;
memcpy(key, data->key, CCMP_TK_LEN);
if (seq) {
seq[0] = data->tx_pn[5];
seq[1] = data->tx_pn[4];
seq[2] = data->tx_pn[3];
seq[3] = data->tx_pn[2];
seq[4] = data->tx_pn[1];
seq[5] = data->tx_pn[0];
}
return CCMP_TK_LEN;
}
static char * hostap_ccmp_print_stats(char *p, void *priv)
{
struct hostap_ccmp_data *ccmp = priv;
p += sprintf(p, "key[%d] alg=CCMP key_set=%d "
"tx_pn=%02x%02x%02x%02x%02x%02x "
"rx_pn=%02x%02x%02x%02x%02x%02x "
"format_errors=%d replays=%d decrypt_errors=%d\n",
ccmp->key_idx, ccmp->key_set,
MAC2STR(ccmp->tx_pn), MAC2STR(ccmp->rx_pn),
ccmp->dot11RSNAStatsCCMPFormatErrors,
ccmp->dot11RSNAStatsCCMPReplays,
ccmp->dot11RSNAStatsCCMPDecryptErrors);
return p;
}
static struct hostap_crypto_ops hostap_crypt_ccmp = {
.name = "CCMP",
.init = hostap_ccmp_init,
.deinit = hostap_ccmp_deinit,
.encrypt_mpdu = hostap_ccmp_encrypt,
.decrypt_mpdu = hostap_ccmp_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = hostap_ccmp_set_key,
.get_key = hostap_ccmp_get_key,
.print_stats = hostap_ccmp_print_stats,
.extra_prefix_len = CCMP_HDR_LEN,
.extra_postfix_len = CCMP_MIC_LEN
};
static int __init hostap_crypto_ccmp_init(void)
{
if (hostap_register_crypto_ops(&hostap_crypt_ccmp) < 0)
return -1;
return 0;
}
static void __exit hostap_crypto_ccmp_exit(void)
{
hostap_unregister_crypto_ops(&hostap_crypt_ccmp);
}
module_init(hostap_crypto_ccmp_init);
module_exit(hostap_crypto_ccmp_exit);

697
drivers/net/wireless/hostap/hostap_crypt_tkip.c
View File

@ -1,697 +0,0 @@
/*
* Host AP crypt: host-based TKIP encryption implementation for Host AP driver
*
* Copyright (c) 2003-2004, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/if_ether.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <asm/string.h>
#include "hostap_crypt.h"
#include "hostap_wlan.h"
#include "hostap_80211.h"
#include "hostap_config.h"
#ifndef CONFIG_CRYPTO
#error CONFIG_CRYPTO is required to build this module.
#endif
#include <linux/crypto.h>
#include <asm/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: TKIP");
MODULE_LICENSE("GPL");
MODULE_VERSION(PRISM2_VERSION);
struct hostap_tkip_data {
#define TKIP_KEY_LEN 32
u8 key[TKIP_KEY_LEN];
int key_set;
u32 tx_iv32;
u16 tx_iv16;
u16 tx_ttak[5];
int tx_phase1_done;
u32 rx_iv32;
u16 rx_iv16;
u16 rx_ttak[5];
int rx_phase1_done;
u32 rx_iv32_new;
u16 rx_iv16_new;
u32 dot11RSNAStatsTKIPReplays;
u32 dot11RSNAStatsTKIPICVErrors;
u32 dot11RSNAStatsTKIPLocalMICFailures;
int key_idx;
struct crypto_tfm *tfm_arc4;
struct crypto_tfm *tfm_michael;
/* scratch buffers for virt_to_page() (crypto API) */
u8 rx_hdr[16], tx_hdr[16];
};
static void * hostap_tkip_init(int key_idx)
{
struct hostap_tkip_data *priv;
if (!try_module_get(THIS_MODULE))
return NULL;
priv = (struct hostap_tkip_data *) kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL)
goto fail;
memset(priv, 0, sizeof(*priv));
priv->key_idx = key_idx;
priv->tfm_arc4 = crypto_alloc_tfm("arc4", 0);
if (priv->tfm_arc4 == NULL) {
printk(KERN_DEBUG "hostap_crypt_tkip: could not allocate "
"crypto API arc4\n");
goto fail;
}
priv->tfm_michael = crypto_alloc_tfm("michael_mic", 0);
if (priv->tfm_michael == NULL) {
printk(KERN_DEBUG "hostap_crypt_tkip: could not allocate "
"crypto API michael_mic\n");
goto fail;
}
return priv;
fail:
if (priv) {
if (priv->tfm_michael)
crypto_free_tfm(priv->tfm_michael);
if (priv->tfm_arc4)
crypto_free_tfm(priv->tfm_arc4);
kfree(priv);
}
module_put(THIS_MODULE);
return NULL;
}
static void hostap_tkip_deinit(void *priv)
{
struct hostap_tkip_data *_priv = priv;
if (_priv && _priv->tfm_michael)
crypto_free_tfm(_priv->tfm_michael);
if (_priv && _priv->tfm_arc4)
crypto_free_tfm(_priv->tfm_arc4);
kfree(priv);
module_put(THIS_MODULE);
}
static inline u16 RotR1(u16 val)
{
return (val >> 1) | (val << 15);
}
static inline u8 Lo8(u16 val)
{
return val & 0xff;
}
static inline u8 Hi8(u16 val)
{
return val >> 8;
}
static inline u16 Lo16(u32 val)
{
return val & 0xffff;
}
static inline u16 Hi16(u32 val)
{
return val >> 16;
}
static inline u16 Mk16(u8 hi, u8 lo)
{
return lo | (((u16) hi) << 8);
}
static inline u16 Mk16_le(u16 *v)
{
return le16_to_cpu(*v);
}
static const u16 Sbox[256] =
{
0xC6A5, 0xF884, 0xEE99, 0xF68D, 0xFF0D, 0xD6BD, 0xDEB1, 0x9154,
0x6050, 0x0203, 0xCEA9, 0x567D, 0xE719, 0xB562, 0x4DE6, 0xEC9A,
0x8F45, 0x1F9D, 0x8940, 0xFA87, 0xEF15, 0xB2EB, 0x8EC9, 0xFB0B,
0x41EC, 0xB367, 0x5FFD, 0x45EA, 0x23BF, 0x53F7, 0xE496, 0x9B5B,
0x75C2, 0xE11C, 0x3DAE, 0x4C6A, 0x6C5A, 0x7E41, 0xF502, 0x834F,
0x685C, 0x51F4, 0xD134, 0xF908, 0xE293, 0xAB73, 0x6253, 0x2A3F,
0x080C, 0x9552, 0x4665, 0x9D5E, 0x3028, 0x37A1, 0x0A0F, 0x2FB5,
0x0E09, 0x2436, 0x1B9B, 0xDF3D, 0xCD26, 0x4E69, 0x7FCD, 0xEA9F,
0x121B, 0x1D9E, 0x5874, 0x342E, 0x362D, 0xDCB2, 0xB4EE, 0x5BFB,
0xA4F6, 0x764D, 0xB761, 0x7DCE, 0x527B, 0xDD3E, 0x5E71, 0x1397,
0xA6F5, 0xB968, 0x0000, 0xC12C, 0x4060, 0xE31F, 0x79C8, 0xB6ED,
0xD4BE, 0x8D46, 0x67D9, 0x724B, 0x94DE, 0x98D4, 0xB0E8, 0x854A,
0xBB6B, 0xC52A, 0x4FE5, 0xED16, 0x86C5, 0x9AD7, 0x6655, 0x1194,
0x8ACF, 0xE910, 0x0406, 0xFE81, 0xA0F0, 0x7844, 0x25BA, 0x4BE3,
0xA2F3, 0x5DFE, 0x80C0, 0x058A, 0x3FAD, 0x21BC, 0x7048, 0xF104,
0x63DF, 0x77C1, 0xAF75, 0x4263, 0x2030, 0xE51A, 0xFD0E, 0xBF6D,
0x814C, 0x1814, 0x2635, 0xC32F, 0xBEE1, 0x35A2, 0x88CC, 0x2E39,
0x9357, 0x55F2, 0xFC82, 0x7A47, 0xC8AC, 0xBAE7, 0x322B, 0xE695,
0xC0A0, 0x1998, 0x9ED1, 0xA37F, 0x4466, 0x547E, 0x3BAB, 0x0B83,
0x8CCA, 0xC729, 0x6BD3, 0x283C, 0xA779, 0xBCE2, 0x161D, 0xAD76,
0xDB3B, 0x6456, 0x744E, 0x141E, 0x92DB, 0x0C0A, 0x486C, 0xB8E4,
0x9F5D, 0xBD6E, 0x43EF, 0xC4A6, 0x39A8, 0x31A4, 0xD337, 0xF28B,
0xD532, 0x8B43, 0x6E59, 0xDAB7, 0x018C, 0xB164, 0x9CD2, 0x49E0,
0xD8B4, 0xACFA, 0xF307, 0xCF25, 0xCAAF, 0xF48E, 0x47E9, 0x1018,
0x6FD5, 0xF088, 0x4A6F, 0x5C72, 0x3824, 0x57F1, 0x73C7, 0x9751,
0xCB23, 0xA17C, 0xE89C, 0x3E21, 0x96DD, 0x61DC, 0x0D86, 0x0F85,
0xE090, 0x7C42, 0x71C4, 0xCCAA, 0x90D8, 0x0605, 0xF701, 0x1C12,
0xC2A3, 0x6A5F, 0xAEF9, 0x69D0, 0x1791, 0x9958, 0x3A27, 0x27B9,
0xD938, 0xEB13, 0x2BB3, 0x2233, 0xD2BB, 0xA970, 0x0789, 0x33A7,
0x2DB6, 0x3C22, 0x1592, 0xC920, 0x8749, 0xAAFF, 0x5078, 0xA57A,
0x038F, 0x59F8, 0x0980, 0x1A17, 0x65DA, 0xD731, 0x84C6, 0xD0B8,
0x82C3, 0x29B0, 0x5A77, 0x1E11, 0x7BCB, 0xA8FC, 0x6DD6, 0x2C3A,
};
static inline u16 _S_(u16 v)
{
u16 t = Sbox[Hi8(v)];
return Sbox[Lo8(v)] ^ ((t << 8) | (t >> 8));
}
#define PHASE1_LOOP_COUNT 8
static void tkip_mixing_phase1(u16 *TTAK, const u8 *TK, const u8 *TA, u32 IV32)
{
int i, j;
/* Initialize the 80-bit TTAK from TSC (IV32) and TA[0..5] */
TTAK[0] = Lo16(IV32);
TTAK[1] = Hi16(IV32);
TTAK[2] = Mk16(TA[1], TA[0]);
TTAK[3] = Mk16(TA[3], TA[2]);
TTAK[4] = Mk16(TA[5], TA[4]);
for (i = 0; i < PHASE1_LOOP_COUNT; i++) {
j = 2 * (i & 1);
TTAK[0] += _S_(TTAK[4] ^ Mk16(TK[1 + j], TK[0 + j]));
TTAK[1] += _S_(TTAK[0] ^ Mk16(TK[5 + j], TK[4 + j]));
TTAK[2] += _S_(TTAK[1] ^ Mk16(TK[9 + j], TK[8 + j]));
TTAK[3] += _S_(TTAK[2] ^ Mk16(TK[13 + j], TK[12 + j]));
TTAK[4] += _S_(TTAK[3] ^ Mk16(TK[1 + j], TK[0 + j])) + i;
}
}
static void tkip_mixing_phase2(u8 *WEPSeed, const u8 *TK, const u16 *TTAK,
u16 IV16)
{
/* Make temporary area overlap WEP seed so that the final copy can be
* avoided on little endian hosts. */
u16 *PPK = (u16 *) &WEPSeed[4];
/* Step 1 - make copy of TTAK and bring in TSC */
PPK[0] = TTAK[0];
PPK[1] = TTAK[1];
PPK[2] = TTAK[2];
PPK[3] = TTAK[3];
PPK[4] = TTAK[4];
PPK[5] = TTAK[4] + IV16;
/* Step 2 - 96-bit bijective mixing using S-box */
PPK[0] += _S_(PPK[5] ^ Mk16_le((u16 *) &TK[0]));
PPK[1] += _S_(PPK[0] ^ Mk16_le((u16 *) &TK[2]));
PPK[2] += _S_(PPK[1] ^ Mk16_le((u16 *) &TK[4]));
PPK[3] += _S_(PPK[2] ^ Mk16_le((u16 *) &TK[6]));
PPK[4] += _S_(PPK[3] ^ Mk16_le((u16 *) &TK[8]));
PPK[5] += _S_(PPK[4] ^ Mk16_le((u16 *) &TK[10]));
PPK[0] += RotR1(PPK[5] ^ Mk16_le((u16 *) &TK[12]));
PPK[1] += RotR1(PPK[0] ^ Mk16_le((u16 *) &TK[14]));
PPK[2] += RotR1(PPK[1]);
PPK[3] += RotR1(PPK[2]);
PPK[4] += RotR1(PPK[3]);
PPK[5] += RotR1(PPK[4]);
/* Step 3 - bring in last of TK bits, assign 24-bit WEP IV value
* WEPSeed[0..2] is transmitted as WEP IV */
WEPSeed[0] = Hi8(IV16);
WEPSeed[1] = (Hi8(IV16) | 0x20) & 0x7F;
WEPSeed[2] = Lo8(IV16);
WEPSeed[3] = Lo8((PPK[5] ^ Mk16_le((u16 *) &TK[0])) >> 1);
#ifdef __BIG_ENDIAN
{
int i;
for (i = 0; i < 6; i++)
PPK[i] = (PPK[i] << 8) | (PPK[i] >> 8);
}
#endif
}
static int hostap_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct hostap_tkip_data *tkey = priv;
int len;
u8 rc4key[16], *pos, *icv;
struct hostap_ieee80211_hdr *hdr;
u32 crc;
struct scatterlist sg;
if (skb_headroom(skb) < 8 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len)
return -1;
hdr = (struct hostap_ieee80211_hdr *) skb->data;
if (!tkey->tx_phase1_done) {
tkip_mixing_phase1(tkey->tx_ttak, tkey->key, hdr->addr2,
tkey->tx_iv32);
tkey->tx_phase1_done = 1;
}
tkip_mixing_phase2(rc4key, tkey->key, tkey->tx_ttak, tkey->tx_iv16);
len = skb->len - hdr_len;
pos = skb_push(skb, 8);
memmove(pos, pos + 8, hdr_len);
pos += hdr_len;
icv = skb_put(skb, 4);
*pos++ = rc4key[0];
*pos++ = rc4key[1];
*pos++ = rc4key[2];
*pos++ = (tkey->key_idx << 6) | (1 << 5) /* Ext IV included */;
*pos++ = tkey->tx_iv32 & 0xff;
*pos++ = (tkey->tx_iv32 >> 8) & 0xff;
*pos++ = (tkey->tx_iv32 >> 16) & 0xff;
*pos++ = (tkey->tx_iv32 >> 24) & 0xff;
crc = ~crc32_le(~0, pos, len);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = len + 4;
crypto_cipher_encrypt(tkey->tfm_arc4, &sg, &sg, len + 4);
tkey->tx_iv16++;
if (tkey->tx_iv16 == 0) {
tkey->tx_phase1_done = 0;
tkey->tx_iv32++;
}
return 0;
}
static int hostap_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct hostap_tkip_data *tkey = priv;
u8 rc4key[16];
u8 keyidx, *pos, icv[4];
u32 iv32;
u16 iv16;
struct hostap_ieee80211_hdr *hdr;
u32 crc;
struct scatterlist sg;
int plen;
if (skb->len < hdr_len + 8 + 4)
return -1;
hdr = (struct hostap_ieee80211_hdr *) skb->data;
pos = skb->data + hdr_len;
keyidx = pos[3];
if (!(keyidx & (1 << 5))) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: received packet without ExtIV"
" flag from " MACSTR "\n", MAC2STR(hdr->addr2));
}
return -2;
}
keyidx >>= 6;
if (tkey->key_idx != keyidx) {
printk(KERN_DEBUG "TKIP: RX tkey->key_idx=%d frame "
"keyidx=%d priv=%p\n", tkey->key_idx, keyidx, priv);
return -6;
}
if (!tkey->key_set) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: received packet from " MACSTR
" with keyid=%d that does not have a configured"
" key\n", MAC2STR(hdr->addr2), keyidx);
}
return -3;
}
iv16 = (pos[0] << 8) | pos[2];
iv32 = pos[4] | (pos[5] << 8) | (pos[6] << 16) | (pos[7] << 24);
pos += 8;
if (iv32 < tkey->rx_iv32 ||
(iv32 == tkey->rx_iv32 && iv16 <= tkey->rx_iv16)) {
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: replay detected: STA=" MACSTR
" previous TSC %08x%04x received TSC "
"%08x%04x\n", MAC2STR(hdr->addr2),
tkey->rx_iv32, tkey->rx_iv16, iv32, iv16);
}
tkey->dot11RSNAStatsTKIPReplays++;
return -4;
}
if (iv32 != tkey->rx_iv32 || !tkey->rx_phase1_done) {
tkip_mixing_phase1(tkey->rx_ttak, tkey->key, hdr->addr2, iv32);
tkey->rx_phase1_done = 1;
}
tkip_mixing_phase2(rc4key, tkey->key, tkey->rx_ttak, iv16);
plen = skb->len - hdr_len - 12;
crypto_cipher_setkey(tkey->tfm_arc4, rc4key, 16);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = plen + 4;
crypto_cipher_decrypt(tkey->tfm_arc4, &sg, &sg, plen + 4);
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
if (memcmp(icv, pos + plen, 4) != 0) {
if (iv32 != tkey->rx_iv32) {
/* Previously cached Phase1 result was already lost, so
* it needs to be recalculated for the next packet. */
tkey->rx_phase1_done = 0;
}
if (net_ratelimit()) {
printk(KERN_DEBUG "TKIP: ICV error detected: STA="
MACSTR "\n", MAC2STR(hdr->addr2));
}
tkey->dot11RSNAStatsTKIPICVErrors++;
return -5;
}
/* Update real counters only after Michael MIC verification has
* completed */
tkey->rx_iv32_new = iv32;
tkey->rx_iv16_new = iv16;
/* Remove IV and ICV */
memmove(skb->data + 8, skb->data, hdr_len);
skb_pull(skb, 8);
skb_trim(skb, skb->len - 4);
return keyidx;
}
static int michael_mic(struct hostap_tkip_data *tkey, u8 *key, u8 *hdr,
u8 *data, size_t data_len, u8 *mic)
{
struct scatterlist sg[2];
if (tkey->tfm_michael == NULL) {
printk(KERN_WARNING "michael_mic: tfm_michael == NULL\n");
return -1;
}
sg[0].page = virt_to_page(hdr);
sg[0].offset = offset_in_page(hdr);
sg[0].length = 16;
sg[1].page = virt_to_page(data);
sg[1].offset = offset_in_page(data);
sg[1].length = data_len;
crypto_digest_init(tkey->tfm_michael);
crypto_digest_setkey(tkey->tfm_michael, key, 8);
crypto_digest_update(tkey->tfm_michael, sg, 2);
crypto_digest_final(tkey->tfm_michael, mic);
return 0;
}
static void michael_mic_hdr(struct sk_buff *skb, u8 *hdr)
{
struct hostap_ieee80211_hdr *hdr11;
hdr11 = (struct hostap_ieee80211_hdr *) skb->data;
switch (le16_to_cpu(hdr11->frame_control) &
(WLAN_FC_FROMDS | WLAN_FC_TODS)) {
case WLAN_FC_TODS:
memcpy(hdr, hdr11->addr3, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN); /* SA */
break;
case WLAN_FC_FROMDS:
memcpy(hdr, hdr11->addr1, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr3, ETH_ALEN); /* SA */
break;
case WLAN_FC_FROMDS | WLAN_FC_TODS:
memcpy(hdr, hdr11->addr3, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr4, ETH_ALEN); /* SA */
break;
case 0:
memcpy(hdr, hdr11->addr1, ETH_ALEN); /* DA */
memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN); /* SA */
break;
}
hdr[12] = 0; /* priority */
hdr[13] = hdr[14] = hdr[15] = 0; /* reserved */
}
static int hostap_michael_mic_add(struct sk_buff *skb, int hdr_len, void *priv)
{
struct hostap_tkip_data *tkey = priv;
u8 *pos;
if (skb_tailroom(skb) < 8 || skb->len < hdr_len) {
printk(KERN_DEBUG "Invalid packet for Michael MIC add "
"(tailroom=%d hdr_len=%d skb->len=%d)\n",
skb_tailroom(skb), hdr_len, skb->len);
return -1;
}
michael_mic_hdr(skb, tkey->tx_hdr);
pos = skb_put(skb, 8);
if (michael_mic(tkey, &tkey->key[16], tkey->tx_hdr,
skb->data + hdr_len, skb->len - 8 - hdr_len, pos))
return -1;
return 0;
}
static void hostap_michael_mic_failure(struct net_device *dev,
struct hostap_ieee80211_hdr *hdr,
int keyidx)
{
union iwreq_data wrqu;
char buf[128];
/* TODO: needed parameters: count, keyid, key type, src address, TSC */
sprintf(buf, "MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr="
MACSTR ")", keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
MAC2STR(hdr->addr2));
memset(&wrqu, 0, sizeof(wrqu));
wrqu.data.length = strlen(buf);
wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
}
static int hostap_michael_mic_verify(struct sk_buff *skb, int keyidx,
int hdr_len, void *priv)
{
struct hostap_tkip_data *tkey = priv;
u8 mic[8];
if (!tkey->key_set)
return -1;
michael_mic_hdr(skb, tkey->rx_hdr);
if (michael_mic(tkey, &tkey->key[24], tkey->rx_hdr,
skb->data + hdr_len, skb->len - 8 - hdr_len, mic))
return -1;
if (memcmp(mic, skb->data + skb->len - 8, 8) != 0) {
struct hostap_ieee80211_hdr *hdr;
hdr = (struct hostap_ieee80211_hdr *) skb->data;
printk(KERN_DEBUG "%s: Michael MIC verification failed for "
"MSDU from " MACSTR " keyidx=%d\n",
skb->dev ? skb->dev->name : "N/A", MAC2STR(hdr->addr2),
keyidx);
if (skb->dev)
hostap_michael_mic_failure(skb->dev, hdr, keyidx);
tkey->dot11RSNAStatsTKIPLocalMICFailures++;
return -1;
}
/* Update TSC counters for RX now that the packet verification has
* completed. */
tkey->rx_iv32 = tkey->rx_iv32_new;
tkey->rx_iv16 = tkey->rx_iv16_new;
skb_trim(skb, skb->len - 8);
return 0;
}
static int hostap_tkip_set_key(void *key, int len, u8 *seq, void *priv)
{
struct hostap_tkip_data *tkey = priv;
int keyidx;
struct crypto_tfm *tfm = tkey->tfm_michael;
struct crypto_tfm *tfm2 = tkey->tfm_arc4;
keyidx = tkey->key_idx;
memset(tkey, 0, sizeof(*tkey));
tkey->key_idx = keyidx;
tkey->tfm_michael = tfm;
tkey->tfm_arc4 = tfm2;
if (len == TKIP_KEY_LEN) {
memcpy(tkey->key, key, TKIP_KEY_LEN);
tkey->key_set = 1;
tkey->tx_iv16 = 1; /* TSC is initialized to 1 */
if (seq) {
tkey->rx_iv32 = (seq[5] << 24) | (seq[4] << 16) |
(seq[3] << 8) | seq[2];
tkey->rx_iv16 = (seq[1] << 8) | seq[0];
}
} else if (len == 0) {
tkey->key_set = 0;
} else
return -1;
return 0;
}
static int hostap_tkip_get_key(void *key, int len, u8 *seq, void *priv)
{
struct hostap_tkip_data *tkey = priv;
if (len < TKIP_KEY_LEN)
return -1;
if (!tkey->key_set)
return 0;
memcpy(key, tkey->key, TKIP_KEY_LEN);
if (seq) {
/* Return the sequence number of the last transmitted frame. */
u16 iv16 = tkey->tx_iv16;
u32 iv32 = tkey->tx_iv32;
if (iv16 == 0)
iv32--;
iv16--;
seq[0] = tkey->tx_iv16;
seq[1] = tkey->tx_iv16 >> 8;
seq[2] = tkey->tx_iv32;
seq[3] = tkey->tx_iv32 >> 8;
seq[4] = tkey->tx_iv32 >> 16;
seq[5] = tkey->tx_iv32 >> 24;
}
return TKIP_KEY_LEN;
}
static char * hostap_tkip_print_stats(char *p, void *priv)
{
struct hostap_tkip_data *tkip = priv;
p += sprintf(p, "key[%d] alg=TKIP key_set=%d "
"tx_pn=%02x%02x%02x%02x%02x%02x "
"rx_pn=%02x%02x%02x%02x%02x%02x "
"replays=%d icv_errors=%d local_mic_failures=%d\n",
tkip->key_idx, tkip->key_set,
(tkip->tx_iv32 >> 24) & 0xff,
(tkip->tx_iv32 >> 16) & 0xff,
(tkip->tx_iv32 >> 8) & 0xff,
tkip->tx_iv32 & 0xff,
(tkip->tx_iv16 >> 8) & 0xff,
tkip->tx_iv16 & 0xff,
(tkip->rx_iv32 >> 24) & 0xff,
(tkip->rx_iv32 >> 16) & 0xff,
(tkip->rx_iv32 >> 8) & 0xff,
tkip->rx_iv32 & 0xff,
(tkip->rx_iv16 >> 8) & 0xff,
tkip->rx_iv16 & 0xff,
tkip->dot11RSNAStatsTKIPReplays,
tkip->dot11RSNAStatsTKIPICVErrors,
tkip->dot11RSNAStatsTKIPLocalMICFailures);
return p;
}
static struct hostap_crypto_ops hostap_crypt_tkip = {
.name = "TKIP",
.init = hostap_tkip_init,
.deinit = hostap_tkip_deinit,
.encrypt_mpdu = hostap_tkip_encrypt,
.decrypt_mpdu = hostap_tkip_decrypt,
.encrypt_msdu = hostap_michael_mic_add,
.decrypt_msdu = hostap_michael_mic_verify,
.set_key = hostap_tkip_set_key,
.get_key = hostap_tkip_get_key,
.print_stats = hostap_tkip_print_stats,
.extra_prefix_len = 4 + 4 /* IV + ExtIV */,
.extra_postfix_len = 8 + 4 /* MIC + ICV */
};
static int __init hostap_crypto_tkip_init(void)
{
if (hostap_register_crypto_ops(&hostap_crypt_tkip) < 0)
return -1;
return 0;
}
static void __exit hostap_crypto_tkip_exit(void)
{
hostap_unregister_crypto_ops(&hostap_crypt_tkip);
}
module_init(hostap_crypto_tkip_init);
module_exit(hostap_crypto_tkip_exit);

283
drivers/net/wireless/hostap/hostap_crypt_wep.c
View File

@ -1,283 +0,0 @@
/*
* Host AP crypt: host-based WEP encryption implementation for Host AP driver
*
* Copyright (c) 2002-2004, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*/
#include <linux/config.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/random.h>
#include <linux/skbuff.h>
#include <asm/string.h>
#include "hostap_crypt.h"
#include "hostap_config.h"
#ifndef CONFIG_CRYPTO
#error CONFIG_CRYPTO is required to build this module.
#endif
#include <linux/crypto.h>
#include <asm/scatterlist.h>
#include <linux/crc32.h>
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Host AP crypt: WEP");
MODULE_LICENSE("GPL");
MODULE_VERSION(PRISM2_VERSION);
struct prism2_wep_data {
u32 iv;
#define WEP_KEY_LEN 13
u8 key[WEP_KEY_LEN + 1];
u8 key_len;
u8 key_idx;
struct crypto_tfm *tfm;
};
static void * prism2_wep_init(int keyidx)
{
struct prism2_wep_data *priv;
if (!try_module_get(THIS_MODULE))
return NULL;
priv = (struct prism2_wep_data *) kmalloc(sizeof(*priv), GFP_ATOMIC);
if (priv == NULL)
goto fail;
memset(priv, 0, sizeof(*priv));
priv->key_idx = keyidx;
priv->tfm = crypto_alloc_tfm("arc4", 0);
if (priv->tfm == NULL) {
printk(KERN_DEBUG "hostap_crypt_wep: could not allocate "
"crypto API arc4\n");
goto fail;
}
/* start WEP IV from a random value */
get_random_bytes(&priv->iv, 4);
return priv;
fail:
if (priv) {
if (priv->tfm)
crypto_free_tfm(priv->tfm);
kfree(priv);
}
module_put(THIS_MODULE);
return NULL;
}
static void prism2_wep_deinit(void *priv)
{
struct prism2_wep_data *_priv = priv;
if (_priv && _priv->tfm)
crypto_free_tfm(_priv->tfm);
kfree(priv);
module_put(THIS_MODULE);
}
/* Perform WEP encryption on given skb that has at least 4 bytes of headroom
* for IV and 4 bytes of tailroom for ICV. Both IV and ICV will be transmitted,
* so the payload length increases with 8 bytes.
*
* WEP frame payload: IV + TX key idx, RC4(data), ICV = RC4(CRC32(data))
*/
static int prism2_wep_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct prism2_wep_data *wep = priv;
u32 crc, klen, len;
u8 key[WEP_KEY_LEN + 3];
u8 *pos, *icv;
struct scatterlist sg;
if (skb_headroom(skb) < 4 || skb_tailroom(skb) < 4 ||
skb->len < hdr_len)
return -1;
len = skb->len - hdr_len;
pos = skb_push(skb, 4);
memmove(pos, pos + 4, hdr_len);
pos += hdr_len;
klen = 3 + wep->key_len;
wep->iv++;
/* Fluhrer, Mantin, and Shamir have reported weaknesses in the key
* scheduling algorithm of RC4. At least IVs (KeyByte + 3, 0xff, N)
* can be used to speedup attacks, so avoid using them. */
if ((wep->iv & 0xff00) == 0xff00) {
u8 B = (wep->iv >> 16) & 0xff;
if (B >= 3 && B < klen)
wep->iv += 0x0100;
}
/* Prepend 24-bit IV to RC4 key and TX frame */
*pos++ = key[0] = (wep->iv >> 16) & 0xff;
*pos++ = key[1] = (wep->iv >> 8) & 0xff;
*pos++ = key[2] = wep->iv & 0xff;
*pos++ = wep->key_idx << 6;
/* Copy rest of the WEP key (the secret part) */
memcpy(key + 3, wep->key, wep->key_len);
/* Append little-endian CRC32 and encrypt it to produce ICV */
crc = ~crc32_le(~0, pos, len);
icv = skb_put(skb, 4);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
crypto_cipher_setkey(wep->tfm, key, klen);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = len + 4;
crypto_cipher_encrypt(wep->tfm, &sg, &sg, len + 4);
return 0;
}
/* Perform WEP decryption on given buffer. Buffer includes whole WEP part of
* the frame: IV (4 bytes), encrypted payload (including SNAP header),
* ICV (4 bytes). len includes both IV and ICV.
*
* Returns 0 if frame was decrypted successfully and ICV was correct and -1 on
* failure. If frame is OK, IV and ICV will be removed.
*/
static int prism2_wep_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
{
struct prism2_wep_data *wep = priv;
u32 crc, klen, plen;
u8 key[WEP_KEY_LEN + 3];
u8 keyidx, *pos, icv[4];
struct scatterlist sg;
if (skb->len < hdr_len + 8)
return -1;
pos = skb->data + hdr_len;
key[0] = *pos++;
key[1] = *pos++;
key[2] = *pos++;
keyidx = *pos++ >> 6;
if (keyidx != wep->key_idx)
return -1;
klen = 3 + wep->key_len;
/* Copy rest of the WEP key (the secret part) */
memcpy(key + 3, wep->key, wep->key_len);
/* Apply RC4 to data and compute CRC32 over decrypted data */
plen = skb->len - hdr_len - 8;
crypto_cipher_setkey(wep->tfm, key, klen);
sg.page = virt_to_page(pos);
sg.offset = offset_in_page(pos);
sg.length = plen + 4;
crypto_cipher_decrypt(wep->tfm, &sg, &sg, plen + 4);
crc = ~crc32_le(~0, pos, plen);
icv[0] = crc;
icv[1] = crc >> 8;
icv[2] = crc >> 16;
icv[3] = crc >> 24;
if (memcmp(icv, pos + plen, 4) != 0) {
/* ICV mismatch - drop frame */
return -2;
}
/* Remove IV and ICV */
memmove(skb->data + 4, skb->data, hdr_len);
skb_pull(skb, 4);
skb_trim(skb, skb->len - 4);
return 0;
}
static int prism2_wep_set_key(void *key, int len, u8 *seq, void *priv)
{
struct prism2_wep_data *wep = priv;
if (len < 0 || len > WEP_KEY_LEN)
return -1;
memcpy(wep->key, key, len);
wep->key_len = len;
return 0;
}
static int prism2_wep_get_key(void *key, int len, u8 *seq, void *priv)
{
struct prism2_wep_data *wep = priv;
if (len < wep->key_len)
return -1;
memcpy(key, wep->key, wep->key_len);
return wep->key_len;
}
static char * prism2_wep_print_stats(char *p, void *priv)
{
struct prism2_wep_data *wep = priv;
p += sprintf(p, "key[%d] alg=WEP len=%d\n",
wep->key_idx, wep->key_len);
return p;
}
static struct hostap_crypto_ops hostap_crypt_wep = {
.name = "WEP",
.init = prism2_wep_init,
.deinit = prism2_wep_deinit,
.encrypt_mpdu = prism2_wep_encrypt,
.decrypt_mpdu = prism2_wep_decrypt,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = prism2_wep_set_key,
.get_key = prism2_wep_get_key,
.print_stats = prism2_wep_print_stats,
.extra_prefix_len = 4 /* IV */,
.extra_postfix_len = 4 /* ICV */
};
static int __init hostap_crypto_wep_init(void)
{
if (hostap_register_crypto_ops(&hostap_crypt_wep) < 0)
return -1;
return 0;
}
static void __exit hostap_crypto_wep_exit(void)
{
hostap_unregister_crypto_ops(&hostap_crypt_wep);
}
module_init(hostap_crypto_wep_init);
module_exit(hostap_crypto_wep_exit);

8
drivers/net/wireless/hostap/hostap_hw.c
View File

@ -4,7 +4,7 @@
*
* Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
* <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2004, Jouni Malinen <jkmaline@cc.hut.fi>
* Copyright (c) 2002-2005, Jouni Malinen <jkmaline@cc.hut.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -2967,11 +2967,11 @@ static void prism2_check_sta_fw_version(local_info_t *local)
static void prism2_crypt_deinit_entries(local_info_t *local, int force)
{
struct list_head *ptr, *n;
struct prism2_crypt_data *entry;
struct ieee80211_crypt_data *entry;
for (ptr = local->crypt_deinit_list.next, n = ptr->next;
ptr != &local->crypt_deinit_list; ptr = n, n = ptr->next) {
entry = list_entry(ptr, struct prism2_crypt_data, list);
entry = list_entry(ptr, struct ieee80211_crypt_data, list);
if (atomic_read(&entry->refcnt) != 0 && !force)
continue;
@ -3531,7 +3531,7 @@ static void prism2_free_local_data(struct net_device *dev)
prism2_callback(local, PRISM2_CALLBACK_DISABLE);
for (i = 0; i < WEP_KEYS; i++) {
struct prism2_crypt_data *crypt = local->crypt[i];
struct ieee80211_crypt_data *crypt = local->crypt[i];
if (crypt) {
if (crypt->ops)
crypt->ops->deinit(crypt->priv);

77
drivers/net/wireless/hostap/hostap_ioctl.c
View File

@ -115,9 +115,9 @@ static int prism2_get_name(struct net_device *dev,
static void prism2_crypt_delayed_deinit(local_info_t *local,
struct prism2_crypt_data **crypt)
struct ieee80211_crypt_data **crypt)
{
struct prism2_crypt_data *tmp;
struct ieee80211_crypt_data *tmp;
unsigned long flags;
tmp = *crypt;
@ -147,7 +147,7 @@ static int prism2_ioctl_siwencode(struct net_device *dev,
struct hostap_interface *iface;
local_info_t *local;
int i;
struct prism2_crypt_data **crypt;
struct ieee80211_crypt_data **crypt;
iface = netdev_priv(dev);
local = iface->local;
@ -175,18 +175,19 @@ static int prism2_ioctl_siwencode(struct net_device *dev,
}
if (*crypt == NULL) {
struct prism2_crypt_data *new_crypt;
struct ieee80211_crypt_data *new_crypt;
/* take WEP into use */
new_crypt = (struct prism2_crypt_data *)
kmalloc(sizeof(struct prism2_crypt_data), GFP_KERNEL);
new_crypt = (struct ieee80211_crypt_data *)
kmalloc(sizeof(struct ieee80211_crypt_data),
GFP_KERNEL);
if (new_crypt == NULL)
return -ENOMEM;
memset(new_crypt, 0, sizeof(struct prism2_crypt_data));
new_crypt->ops = hostap_get_crypto_ops("WEP");
memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
new_crypt->ops = ieee80211_get_crypto_ops("WEP");
if (!new_crypt->ops) {
request_module("hostap_crypt_wep");
new_crypt->ops = hostap_get_crypto_ops("WEP");
request_module("ieee80211_crypt_wep");
new_crypt->ops = ieee80211_get_crypto_ops("WEP");
}
if (new_crypt->ops)
new_crypt->priv = new_crypt->ops->init(i);
@ -251,7 +252,7 @@ static int prism2_ioctl_giwencode(struct net_device *dev,
local_info_t *local;
int i, len;
u16 val;
struct prism2_crypt_data *crypt;
struct ieee80211_crypt_data *crypt;
iface = netdev_priv(dev);
local = iface->local;
@ -3259,8 +3260,8 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev,
local_info_t *local = iface->local;
struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
int i, ret = 0;
struct hostap_crypto_ops *ops;
struct prism2_crypt_data **crypt;
struct ieee80211_crypto_ops *ops;
struct ieee80211_crypt_data **crypt;
void *sta_ptr;
u8 *addr;
const char *alg, *module;
@ -3308,15 +3309,15 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev,
switch (ext->alg) {
case IW_ENCODE_ALG_WEP:
alg = "WEP";
module = "hostap_crypt_wep";
module = "ieee80211_crypt_wep";
break;
case IW_ENCODE_ALG_TKIP:
alg = "TKIP";
module = "hostap_crypt_tkip";
module = "ieee80211_crypt_tkip";
break;
case IW_ENCODE_ALG_CCMP:
alg = "CCMP";
module = "hostap_crypt_ccmp";
module = "ieee80211_crypt_ccmp";
break;
default:
printk(KERN_DEBUG "%s: unsupported algorithm %d\n",
@ -3325,10 +3326,10 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev,
goto done;
}
ops = hostap_get_crypto_ops(alg);
ops = ieee80211_get_crypto_ops(alg);
if (ops == NULL) {
request_module(module);
ops = hostap_get_crypto_ops(alg);
ops = ieee80211_get_crypto_ops(alg);
}
if (ops == NULL) {
printk(KERN_DEBUG "%s: unknown crypto alg '%s'\n",
@ -3347,17 +3348,18 @@ static int prism2_ioctl_siwencodeext(struct net_device *dev,
}
if (*crypt == NULL || (*crypt)->ops != ops) {
struct prism2_crypt_data *new_crypt;
struct ieee80211_crypt_data *new_crypt;
prism2_crypt_delayed_deinit(local, crypt);
new_crypt = (struct prism2_crypt_data *)
kmalloc(sizeof(struct prism2_crypt_data), GFP_KERNEL);
new_crypt = (struct ieee80211_crypt_data *)
kmalloc(sizeof(struct ieee80211_crypt_data),
GFP_KERNEL);
if (new_crypt == NULL) {
ret = -ENOMEM;
goto done;
}
memset(new_crypt, 0, sizeof(struct prism2_crypt_data));
memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
new_crypt->ops = ops;
new_crypt->priv = new_crypt->ops->init(i);
if (new_crypt->priv == NULL) {
@ -3436,7 +3438,7 @@ static int prism2_ioctl_giwencodeext(struct net_device *dev,
{
struct hostap_interface *iface = dev->priv;
local_info_t *local = iface->local;
struct prism2_crypt_data **crypt;
struct ieee80211_crypt_data **crypt;
void *sta_ptr;
int max_key_len, i;
struct iw_encode_ext *ext = (struct iw_encode_ext *) extra;
@ -3505,8 +3507,8 @@ static int prism2_ioctl_set_encryption(local_info_t *local,
int param_len)
{
int ret = 0;
struct hostap_crypto_ops *ops;
struct prism2_crypt_data **crypt;
struct ieee80211_crypto_ops *ops;
struct ieee80211_crypt_data **crypt;
void *sta_ptr;
param->u.crypt.err = 0;
@ -3544,16 +3546,16 @@ static int prism2_ioctl_set_encryption(local_info_t *local,
goto done;
}
ops = hostap_get_crypto_ops(param->u.crypt.alg);
ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
if (ops == NULL && strcmp(param->u.crypt.alg, "WEP") == 0) {
request_module("hostap_crypt_wep");
ops = hostap_get_crypto_ops(param->u.crypt.alg);
request_module("ieee80211_crypt_wep");
ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
} else if (ops == NULL && strcmp(param->u.crypt.alg, "TKIP") == 0) {
request_module("hostap_crypt_tkip");
ops = hostap_get_crypto_ops(param->u.crypt.alg);
request_module("ieee80211_crypt_tkip");
ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
} else if (ops == NULL && strcmp(param->u.crypt.alg, "CCMP") == 0) {
request_module("hostap_crypt_ccmp");
ops = hostap_get_crypto_ops(param->u.crypt.alg);
request_module("ieee80211_crypt_ccmp");
ops = ieee80211_get_crypto_ops(param->u.crypt.alg);
}
if (ops == NULL) {
printk(KERN_DEBUG "%s: unknown crypto alg '%s'\n",
@ -3568,17 +3570,18 @@ static int prism2_ioctl_set_encryption(local_info_t *local,
local->host_decrypt = local->host_encrypt = 1;
if (*crypt == NULL || (*crypt)->ops != ops) {
struct prism2_crypt_data *new_crypt;
struct ieee80211_crypt_data *new_crypt;
prism2_crypt_delayed_deinit(local, crypt);
new_crypt = (struct prism2_crypt_data *)
kmalloc(sizeof(struct prism2_crypt_data), GFP_KERNEL);
new_crypt = (struct ieee80211_crypt_data *)
kmalloc(sizeof(struct ieee80211_crypt_data),
GFP_KERNEL);
if (new_crypt == NULL) {
ret = -ENOMEM;
goto done;
}
memset(new_crypt, 0, sizeof(struct prism2_crypt_data));
memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
new_crypt->ops = ops;
new_crypt->priv = new_crypt->ops->init(param->u.crypt.idx);
if (new_crypt->priv == NULL) {
@ -3642,7 +3645,7 @@ static int prism2_ioctl_get_encryption(local_info_t *local,
struct prism2_hostapd_param *param,
int param_len)
{
struct prism2_crypt_data **crypt;
struct ieee80211_crypt_data **crypt;
void *sta_ptr;
int max_key_len;

10
drivers/net/wireless/hostap/hostap_wlan.h
View File

@ -2,7 +2,6 @@
#define HOSTAP_WLAN_H
#include "hostap_config.h"
#include "hostap_crypt.h"
#include "hostap_common.h"
#define MAX_PARM_DEVICES 8
@ -534,13 +533,6 @@ struct prism2_frag_entry {
};
struct prism2_crypt_data {
struct list_head list; /* delayed deletion list */
struct hostap_crypto_ops *ops;
void *priv;
atomic_t refcnt;
};
struct hostap_cmd_queue {
struct list_head list;
wait_queue_head_t compl;
@ -765,7 +757,7 @@ struct local_info {
#define WEP_KEYS 4
#define WEP_KEY_LEN 13
struct prism2_crypt_data *crypt[WEP_KEYS];
struct ieee80211_crypt_data *crypt[WEP_KEYS];
int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
struct timer_list crypt_deinit_timer;
struct list_head crypt_deinit_list;