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Add HostAP wireless driver.

Browse Source 
Includes minor cleanups from Adrian Bunk <bunk@stusta.de>.
This commit is contained in:
Jouni Malinen
2005-05-12 22:54:16 -04:00
committed by Jeff Garzik
parent 88d7bd8cb9
commit ff1d2767d5
34 changed files with 21602 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MAINTAINERS
+7
View File
@@ -965,6 +965,13 @@ M: mike.miller@hp.com
L: iss_storagedev@hp.com
S: Supported
HOST AP DRIVER
P: Jouni Malinen
M: jkmaline@cc.hut.fi
L: hostap@shmoo.com
W: http://hostap.epitest.fi/
S: Maintained
HP100: Driver for HP 10/100 Mbit/s Voice Grade Network Adapter Series
P: Jaroslav Kysela
M: perex@suse.cz
drivers/net/wireless/Kconfig
+2
View File
@@ -355,6 +355,8 @@ config PRISM54
say M here and read <file:Documentation/modules.txt>. The module
will be called prism54.ko.
source "drivers/net/wireless/hostap/Kconfig"
# yes, this works even when no drivers are selected
config NET_WIRELESS
bool
drivers/net/wireless/Makefile
+2
View File
@@ -28,6 +28,8 @@ obj-$(CONFIG_PCMCIA_ATMEL) += atmel_cs.o
obj-$(CONFIG_PRISM54) += prism54/
obj-$(CONFIG_HOSTAP) += hostap/
# 16-bit wireless PCMCIA client drivers
obj-$(CONFIG_PCMCIA_RAYCS) += ray_cs.o
obj-$(CONFIG_PCMCIA_WL3501) += wl3501_cs.o
drivers/net/wireless/airo.c
+33 -32
View File
@@ -1040,7 +1040,7 @@ typedef struct {
u16 status;
} WifiCtlHdr;
WifiCtlHdr wifictlhdr8023 = {
static WifiCtlHdr wifictlhdr8023 = {
.ctlhdr = {
.ctl = HOST_DONT_RLSE,
}
@@ -1111,13 +1111,13 @@ static int airo_thread(void *data);
static void timer_func( struct net_device *dev );
static int airo_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
#ifdef WIRELESS_EXT
struct iw_statistics *airo_get_wireless_stats (struct net_device *dev);
static struct iw_statistics *airo_get_wireless_stats (struct net_device *dev);
static void airo_read_wireless_stats (struct airo_info *local);
#endif /* WIRELESS_EXT */
#ifdef CISCO_EXT
static int readrids(struct net_device *dev, aironet_ioctl *comp);
static int writerids(struct net_device *dev, aironet_ioctl *comp);
int flashcard(struct net_device *dev, aironet_ioctl *comp);
static int flashcard(struct net_device *dev, aironet_ioctl *comp);
#endif /* CISCO_EXT */
#ifdef MICSUPPORT
static void micinit(struct airo_info *ai);
@@ -1223,6 +1223,12 @@ static int setup_proc_entry( struct net_device *dev,
static int takedown_proc_entry( struct net_device *dev,
struct airo_info *apriv );
static int cmdreset(struct airo_info *ai);
static int setflashmode (struct airo_info *ai);
static int flashgchar(struct airo_info *ai,int matchbyte,int dwelltime);
static int flashputbuf(struct airo_info *ai);
static int flashrestart(struct airo_info *ai,struct net_device *dev);
#ifdef MICSUPPORT
/***********************************************************************
* MIC ROUTINES *
@@ -1231,10 +1237,11 @@ static int takedown_proc_entry( struct net_device *dev,
static int RxSeqValid (struct airo_info *ai,miccntx *context,int mcast,u32 micSeq);
static void MoveWindow(miccntx *context, u32 micSeq);
void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct crypto_tfm *);
void emmh32_init(emmh32_context *context);
void emmh32_update(emmh32_context *context, u8 *pOctets, int len);
void emmh32_final(emmh32_context *context, u8 digest[4]);
static void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct crypto_tfm *);
static void emmh32_init(emmh32_context *context);
static void emmh32_update(emmh32_context *context, u8 *pOctets, int len);
static void emmh32_final(emmh32_context *context, u8 digest[4]);
static int flashpchar(struct airo_info *ai,int byte,int dwelltime);
/* micinit - Initialize mic seed */
@@ -1312,7 +1319,7 @@ static int micsetup(struct airo_info *ai) {
return SUCCESS;
}
char micsnap[]= {0xAA,0xAA,0x03,0x00,0x40,0x96,0x00,0x02};
static char micsnap[] = {0xAA,0xAA,0x03,0x00,0x40,0x96,0x00,0x02};
/*===========================================================================
* Description: Mic a packet
@@ -1567,7 +1574,7 @@ static void MoveWindow(miccntx *context, u32 micSeq)
static unsigned char aes_counter[16];
/* expand the key to fill the MMH coefficient array */
void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct crypto_tfm *tfm)
static void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct crypto_tfm *tfm)
{
/* take the keying material, expand if necessary, truncate at 16-bytes */
/* run through AES counter mode to generate context->coeff[] */
@@ -1599,7 +1606,7 @@ void emmh32_setseed(emmh32_context *context, u8 *pkey, int keylen, struct crypto
}
/* prepare for calculation of a new mic */
void emmh32_init(emmh32_context *context)
static void emmh32_init(emmh32_context *context)
{
/* prepare for new mic calculation */
context->accum = 0;
@@ -1607,7 +1614,7 @@ void emmh32_init(emmh32_context *context)
}
/* add some bytes to the mic calculation */
void emmh32_update(emmh32_context *context, u8 *pOctets, int len)
static void emmh32_update(emmh32_context *context, u8 *pOctets, int len)
{
int coeff_position, byte_position;
@@ -1649,7 +1656,7 @@ void emmh32_update(emmh32_context *context, u8 *pOctets, int len)
static u32 mask32[4] = { 0x00000000L, 0xFF000000L, 0xFFFF0000L, 0xFFFFFF00L };
/* calculate the mic */
void emmh32_final(emmh32_context *context, u8 digest[4])
static void emmh32_final(emmh32_context *context, u8 digest[4])
{
int coeff_position, byte_position;
u32 val;
@@ -2251,7 +2258,7 @@ static void airo_read_stats(struct airo_info *ai) {
ai->stats.rx_fifo_errors = vals[0];
}
struct net_device_stats *airo_get_stats(struct net_device *dev)
static struct net_device_stats *airo_get_stats(struct net_device *dev)
{
struct airo_info *local = dev->priv;
@@ -2410,7 +2417,7 @@ EXPORT_SYMBOL(stop_airo_card);
static int add_airo_dev( struct net_device *dev );
int wll_header_parse(struct sk_buff *skb, unsigned char *haddr)
static int wll_header_parse(struct sk_buff *skb, unsigned char *haddr)
{
memcpy(haddr, skb->mac.raw + 10, ETH_ALEN);
return ETH_ALEN;
@@ -2677,7 +2684,7 @@ static struct net_device *init_wifidev(struct airo_info *ai,
return dev;
}
int reset_card( struct net_device *dev , int lock) {
static int reset_card( struct net_device *dev , int lock) {
struct airo_info *ai = dev->priv;
if (lock && down_interruptible(&ai->sem))
@@ -2692,9 +2699,9 @@ int reset_card( struct net_device *dev , int lock) {
return 0;
}
struct net_device *_init_airo_card( unsigned short irq, int port,
int is_pcmcia, struct pci_dev *pci,
struct device *dmdev )
static struct net_device *_init_airo_card( unsigned short irq, int port,
int is_pcmcia, struct pci_dev *pci,
struct device *dmdev )
{
struct net_device *dev;
struct airo_info *ai;
@@ -7177,7 +7184,7 @@ static void airo_read_wireless_stats(struct airo_info *local)
local->wstats.miss.beacon = vals[34];
}
struct iw_statistics *airo_get_wireless_stats(struct net_device *dev)
static struct iw_statistics *airo_get_wireless_stats(struct net_device *dev)
{
struct airo_info *local = dev->priv;
@@ -7392,14 +7399,8 @@ static int writerids(struct net_device *dev, aironet_ioctl *comp) {
* Flash command switch table
*/
int flashcard(struct net_device *dev, aironet_ioctl *comp) {
static int flashcard(struct net_device *dev, aironet_ioctl *comp) {
int z;
int cmdreset(struct airo_info *);
int setflashmode(struct airo_info *);
int flashgchar(struct airo_info *,int,int);
int flashpchar(struct airo_info *,int,int);
int flashputbuf(struct airo_info *);
int flashrestart(struct airo_info *,struct net_device *);
/* Only super-user can modify flash */
if (!capable(CAP_NET_ADMIN))
@@ -7457,7 +7458,7 @@ int flashcard(struct net_device *dev, aironet_ioctl *comp) {
* card.
*/
int cmdreset(struct airo_info *ai) {
static int cmdreset(struct airo_info *ai) {
disable_MAC(ai, 1);
if(!waitbusy (ai)){
@@ -7481,7 +7482,7 @@ int cmdreset(struct airo_info *ai) {
* mode
*/
int setflashmode (struct airo_info *ai) {
static int setflashmode (struct airo_info *ai) {
set_bit (FLAG_FLASHING, &ai->flags);
OUT4500(ai, SWS0, FLASH_COMMAND);
@@ -7508,7 +7509,7 @@ int setflashmode (struct airo_info *ai) {
* x 50us for echo .
*/
int flashpchar(struct airo_info *ai,int byte,int dwelltime) {
static int flashpchar(struct airo_info *ai,int byte,int dwelltime) {
int echo;
int waittime;
@@ -7548,7 +7549,7 @@ int flashpchar(struct airo_info *ai,int byte,int dwelltime) {
* Get a character from the card matching matchbyte
* Step 3)
*/
int flashgchar(struct airo_info *ai,int matchbyte,int dwelltime){
static int flashgchar(struct airo_info *ai,int matchbyte,int dwelltime){
int rchar;
unsigned char rbyte=0;
@@ -7579,7 +7580,7 @@ int flashgchar(struct airo_info *ai,int matchbyte,int dwelltime){
* send to the card
*/
int flashputbuf(struct airo_info *ai){
static int flashputbuf(struct airo_info *ai){
int nwords;
/* Write stuff */
@@ -7601,7 +7602,7 @@ int flashputbuf(struct airo_info *ai){
/*
*
*/
int flashrestart(struct airo_info *ai,struct net_device *dev){
static int flashrestart(struct airo_info *ai,struct net_device *dev){
int i,status;
ssleep(1); /* Added 12/7/00 */
drivers/net/wireless/hostap/Kconfig
+104
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@@ -0,0 +1,104 @@
config HOSTAP
tristate "IEEE 802.11 for Host AP (Prism2/2.5/3 and WEP/TKIP/CCMP)"
depends on NET_RADIO
---help---
Shared driver code for IEEE 802.11b wireless cards based on
Intersil Prism2/2.5/3 chipset. This driver supports so called
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
support.
This option includes the base Host AP driver code that is shared by
different hardware models. You will also need to enable support for
PLX/PCI/CS version of the driver to actually use the driver.
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
---help---
Configure Host AP driver to include support for firmware image
download. Current version supports only downloading to volatile, i.e.,
RAM memory. Flash upgrade is not yet supported.
Firmware image downloading needs user space tool, prism2_srec. It is
available from http://hostap.epitest.fi/.
config HOSTAP_PLX
tristate "Host AP driver for Prism2/2.5/3 in PLX9052 PCI adaptors"
depends on PCI && HOSTAP
---help---
Host AP driver's version for Prism2/2.5/3 PC Cards in PLX9052 based
PCI adaptors.
"Host AP support for Prism2/2.5/3 IEEE 802.11b" is required for this
driver and its help text includes more information about the Host AP
driver.
The driver can be compiled as a module and will be named
"hostap_plx.ko".
config HOSTAP_PCI
tristate "Host AP driver for Prism2.5 PCI adaptors"
depends on PCI && HOSTAP
---help---
Host AP driver's version for Prism2.5 PCI adaptors.
"Host AP support for Prism2/2.5/3 IEEE 802.11b" is required for this
driver and its help text includes more information about the Host AP
driver.
The driver can be compiled as a module and will be named
"hostap_pci.ko".
config HOSTAP_CS
tristate "Host AP driver for Prism2/2.5/3 PC Cards"
depends on PCMCIA!=n && HOSTAP
---help---
Host AP driver's version for Prism2/2.5/3 PC Cards.
"Host AP support for Prism2/2.5/3 IEEE 802.11b" is required for this
driver and its help text includes more information about the Host AP
driver.
The driver can be compiled as a module and will be named
"hostap_cs.ko".
drivers/net/wireless/hostap/Makefile
+8
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@@ -0,0 +1,8 @@
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-$(CONFIG_HOSTAP_PLX) += hostap_plx.o
obj-$(CONFIG_HOSTAP_PCI) += hostap_pci.o
drivers/net/wireless/hostap/hostap.c
+1207
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File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap.h
+57
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@@ -0,0 +1,57 @@
#ifndef HOSTAP_H
#define HOSTAP_H
/* hostap.c */
extern struct proc_dir_entry *hostap_proc;
u16 hostap_tx_callback_register(local_info_t *local,
void (*func)(struct sk_buff *, int ok, void *),
void *data);
int hostap_tx_callback_unregister(local_info_t *local, u16 idx);
int hostap_set_word(struct net_device *dev, int rid, u16 val);
int hostap_set_string(struct net_device *dev, int rid, const char *val);
u16 hostap_get_porttype(local_info_t *local);
int hostap_set_encryption(local_info_t *local);
int hostap_set_antsel(local_info_t *local);
int hostap_set_roaming(local_info_t *local);
int hostap_set_auth_algs(local_info_t *local);
void hostap_dump_rx_header(const char *name,
const struct hfa384x_rx_frame *rx);
void hostap_dump_tx_header(const char *name,
const struct hfa384x_tx_frame *tx);
int hostap_80211_header_parse(struct sk_buff *skb, unsigned char *haddr);
int hostap_80211_prism_header_parse(struct sk_buff *skb, unsigned char *haddr);
int hostap_80211_get_hdrlen(u16 fc);
struct net_device_stats *hostap_get_stats(struct net_device *dev);
void hostap_setup_dev(struct net_device *dev, local_info_t *local,
int main_dev);
void hostap_set_multicast_list_queue(void *data);
int hostap_set_hostapd(local_info_t *local, int val, int rtnl_locked);
int hostap_set_hostapd_sta(local_info_t *local, int val, int rtnl_locked);
void hostap_cleanup(local_info_t *local);
void hostap_cleanup_handler(void *data);
struct net_device * hostap_add_interface(struct local_info *local,
int type, int rtnl_locked,
const char *prefix, const char *name);
void hostap_remove_interface(struct net_device *dev, int rtnl_locked,
int remove_from_list);
int prism2_update_comms_qual(struct net_device *dev);
int prism2_sta_send_mgmt(local_info_t *local, u8 *dst, u8 stype,
u8 *body, size_t bodylen);
int prism2_sta_deauth(local_info_t *local, u16 reason);
/* hostap_proc.c */
void hostap_init_proc(local_info_t *local);
void hostap_remove_proc(local_info_t *local);
/* hostap_info.c */
void hostap_info_init(local_info_t *local);
void hostap_info_process(local_info_t *local, struct sk_buff *skb);
#endif /* HOSTAP_H */
drivers/net/wireless/hostap/hostap_80211.h
+107
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@@ -0,0 +1,107 @@
#ifndef HOSTAP_80211_H
#define HOSTAP_80211_H
struct hostap_ieee80211_hdr {
u16 frame_control;
u16 duration_id;
u8 addr1[6];
u8 addr2[6];
u8 addr3[6];
u16 seq_ctrl;
u8 addr4[6];
} __attribute__ ((packed));
struct hostap_ieee80211_mgmt {
u16 frame_control;
u16 duration;
u8 da[6];
u8 sa[6];
u8 bssid[6];
u16 seq_ctrl;
union {
struct {
u16 auth_alg;
u16 auth_transaction;
u16 status_code;
/* possibly followed by Challenge text */
u8 variable[0];
} __attribute__ ((packed)) auth;
struct {
u16 reason_code;
} __attribute__ ((packed)) deauth;
struct {
u16 capab_info;
u16 listen_interval;
/* followed by SSID and Supported rates */
u8 variable[0];
} __attribute__ ((packed)) assoc_req;
struct {
u16 capab_info;
u16 status_code;
u16 aid;
/* followed by Supported rates */
u8 variable[0];
} __attribute__ ((packed)) assoc_resp, reassoc_resp;
struct {
u16 capab_info;
u16 listen_interval;
u8 current_ap[6];
/* followed by SSID and Supported rates */
u8 variable[0];
} __attribute__ ((packed)) reassoc_req;
struct {
u16 reason_code;
} __attribute__ ((packed)) disassoc;
struct {
} __attribute__ ((packed)) probe_req;
struct {
u8 timestamp[8];
u16 beacon_int;
u16 capab_info;
/* followed by some of SSID, Supported rates,
* FH Params, DS Params, CF Params, IBSS Params, TIM */
u8 variable[0];
} __attribute__ ((packed)) beacon, probe_resp;
} u;
} __attribute__ ((packed));
#define IEEE80211_MGMT_HDR_LEN 24
#define IEEE80211_DATA_HDR3_LEN 24
#define IEEE80211_DATA_HDR4_LEN 30
struct hostap_80211_rx_status {
u32 mac_time;
u8 signal;
u8 noise;
u16 rate; /* in 100 kbps */
};
void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats);
/* prism2_rx_80211 'type' argument */
enum {
PRISM2_RX_MONITOR, PRISM2_RX_MGMT, PRISM2_RX_NON_ASSOC,
PRISM2_RX_NULLFUNC_ACK
};
int prism2_rx_80211(struct net_device *dev, struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats, int type);
void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats);
void hostap_dump_rx_80211(const char *name, struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats);
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);
int hostap_master_start_xmit(struct sk_buff *skb, struct net_device *dev);
#endif /* HOSTAP_80211_H */
drivers/net/wireless/hostap/hostap_80211_rx.c
+1084
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File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap_80211_tx.c
+522
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File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap_ap.c
+3286
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File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap_ap.h
+272
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@@ -0,0 +1,272 @@
#ifndef HOSTAP_AP_H
#define HOSTAP_AP_H
/* AP data structures for STAs */
/* maximum number of frames to buffer per STA */
#define STA_MAX_TX_BUFFER 32
/* Flags used in skb->cb[6] to control how the packet is handled in TX path.
* skb->cb[0..5] must contain magic value 'hostap' to indicate that cb[6] is
* used. */
#define AP_SKB_CB_MAGIC "hostap"
#define AP_SKB_CB_MAGIC_LEN 6
#define AP_SKB_CB_BUFFERED_FRAME BIT(0)
#define AP_SKB_CB_ADD_MOREDATA BIT(1)
/* STA flags */
#define WLAN_STA_AUTH BIT(0)
#define WLAN_STA_ASSOC BIT(1)
#define WLAN_STA_PS BIT(2)
#define WLAN_STA_TIM BIT(3) /* TIM bit is on for PS stations */
#define WLAN_STA_PERM BIT(4) /* permanent; do not remove entry on expiration */
#define WLAN_STA_AUTHORIZED BIT(5) /* If 802.1X is used, this flag is
* controlling whether STA is authorized to
* send and receive non-IEEE 802.1X frames
*/
#define WLAN_STA_PENDING_POLL BIT(6) /* pending activity poll not ACKed */
#define WLAN_RATE_1M BIT(0)
#define WLAN_RATE_2M BIT(1)
#define WLAN_RATE_5M5 BIT(2)
#define WLAN_RATE_11M BIT(3)
#define WLAN_RATE_COUNT 4
/* Maximum size of Supported Rates info element. IEEE 802.11 has a limit of 8,
* but some pre-standard IEEE 802.11g products use longer elements. */
#define WLAN_SUPP_RATES_MAX 32
/* Try to increase TX rate after # successfully sent consecutive packets */
#define WLAN_RATE_UPDATE_COUNT 50
/* Decrease TX rate after # consecutive dropped packets */
#define WLAN_RATE_DECREASE_THRESHOLD 2
struct sta_info {
struct list_head list;
struct sta_info *hnext; /* next entry in hash table list */
atomic_t users; /* number of users (do not remove if > 0) */
struct proc_dir_entry *proc;
u8 addr[6];
u16 aid; /* STA's unique AID (1 .. 2007) or 0 if not yet assigned */
u32 flags;
u16 capability;
u16 listen_interval; /* or beacon_int for APs */
u8 supported_rates[WLAN_SUPP_RATES_MAX];
unsigned long last_auth;
unsigned long last_assoc;
unsigned long last_rx;
unsigned long last_tx;
unsigned long rx_packets, tx_packets;
unsigned long rx_bytes, tx_bytes;
struct sk_buff_head tx_buf;
/* FIX: timeout buffers with an expiry time somehow derived from
* listen_interval */
s8 last_rx_silence; /* Noise in dBm */
s8 last_rx_signal; /* Signal strength in dBm */
u8 last_rx_rate; /* TX rate in 0.1 Mbps */
u8 last_rx_updated; /* IWSPY's struct iw_quality::updated */
u8 tx_supp_rates; /* bit field of supported TX rates */
u8 tx_rate; /* current TX rate (in 0.1 Mbps) */
u8 tx_rate_idx; /* current TX rate (WLAN_RATE_*) */
u8 tx_max_rate; /* max TX rate (WLAN_RATE_*) */
u32 tx_count[WLAN_RATE_COUNT]; /* number of frames sent (per rate) */
u32 rx_count[WLAN_RATE_COUNT]; /* number of frames received (per rate)
*/
u32 tx_since_last_failure;
u32 tx_consecutive_exc;
struct prism2_crypt_data *crypt;
int ap; /* whether this station is an AP */
local_info_t *local;
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
union {
struct {
char *challenge; /* shared key authentication
* challenge */
} sta;
struct {
int ssid_len;
unsigned char ssid[MAX_SSID_LEN + 1]; /* AP's ssid */
int channel;
unsigned long last_beacon; /* last RX beacon time */
} ap;
} u;
struct timer_list timer;
enum { STA_NULLFUNC = 0, STA_DISASSOC, STA_DEAUTH } timeout_next;
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
};
#define MAX_STA_COUNT 1024
/* Maximum number of AIDs to use for STAs; must be 2007 or lower
* (8802.11 limitation) */
#define MAX_AID_TABLE_SIZE 128
#define STA_HASH_SIZE 256
#define STA_HASH(sta) (sta[5])
/* Default value for maximum station inactivity. After AP_MAX_INACTIVITY_SEC
* has passed since last received frame from the station, a nullfunc data
* frame is sent to the station. If this frame is not acknowledged and no other
* frames have been received, the station will be disassociated after
* AP_DISASSOC_DELAY. Similarily, a the station will be deauthenticated after
* AP_DEAUTH_DELAY. AP_TIMEOUT_RESOLUTION is the resolution that is used with
* max inactivity timer. */
#define AP_MAX_INACTIVITY_SEC (5 * 60)
#define AP_DISASSOC_DELAY (HZ)
#define AP_DEAUTH_DELAY (HZ)
/* ap_policy: whether to accept frames to/from other APs/IBSS */
typedef enum {
AP_OTHER_AP_SKIP_ALL = 0,
AP_OTHER_AP_SAME_SSID = 1,
AP_OTHER_AP_ALL = 2,
AP_OTHER_AP_EVEN_IBSS = 3
} ap_policy_enum;
#define PRISM2_AUTH_OPEN BIT(0)
#define PRISM2_AUTH_SHARED_KEY BIT(1)
/* MAC address-based restrictions */
struct mac_entry {
struct list_head list;
u8 addr[6];
};
struct mac_restrictions {
enum { MAC_POLICY_OPEN = 0, MAC_POLICY_ALLOW, MAC_POLICY_DENY } policy;
unsigned int entries;
struct list_head mac_list;
spinlock_t lock;
};
struct add_sta_proc_data {
u8 addr[ETH_ALEN];
struct add_sta_proc_data *next;
};
typedef enum { WDS_ADD, WDS_DEL } wds_oper_type;
struct wds_oper_data {
wds_oper_type type;
u8 addr[ETH_ALEN];
struct wds_oper_data *next;
};
struct ap_data {
int initialized; /* whether ap_data has been initialized */
local_info_t *local;
int bridge_packets; /* send packet to associated STAs directly to the
* wireless media instead of higher layers in the
* kernel */
unsigned int bridged_unicast; /* number of unicast frames bridged on
* wireless media */
unsigned int bridged_multicast; /* number of non-unicast frames
* bridged on wireless media */
unsigned int tx_drop_nonassoc; /* number of unicast TX packets dropped
* because they were to an address that
* was not associated */
int nullfunc_ack; /* use workaround for nullfunc frame ACKs */
spinlock_t sta_table_lock;
int num_sta; /* number of entries in sta_list */
struct list_head sta_list; /* STA info list head */
struct sta_info *sta_hash[STA_HASH_SIZE];
struct proc_dir_entry *proc;
ap_policy_enum ap_policy;
unsigned int max_inactivity;
int autom_ap_wds;
struct mac_restrictions mac_restrictions; /* MAC-based auth */
int last_tx_rate;
struct work_struct add_sta_proc_queue;
struct add_sta_proc_data *add_sta_proc_entries;
struct work_struct wds_oper_queue;
struct wds_oper_data *wds_oper_entries;
u16 tx_callback_idx;
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
/* pointers to STA info; based on allocated AID or NULL if AID free
* AID is in the range 1-2007, so sta_aid[0] corresponders to AID 1
* and so on
*/
struct sta_info *sta_aid[MAX_AID_TABLE_SIZE];
u16 tx_callback_auth, tx_callback_assoc, tx_callback_poll;
/* WEP operations for generating challenges to be used with shared key
* authentication */
struct hostap_crypto_ops *crypt;
void *crypt_priv;
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
};
void hostap_rx(struct net_device *dev, struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats);
void hostap_init_data(local_info_t *local);
void hostap_init_ap_proc(local_info_t *local);
void hostap_free_data(struct ap_data *ap);
void hostap_check_sta_fw_version(struct ap_data *ap, int sta_fw_ver);
typedef enum {
AP_TX_CONTINUE, AP_TX_DROP, AP_TX_RETRY, AP_TX_BUFFERED,
AP_TX_CONTINUE_NOT_AUTHORIZED
} ap_tx_ret;
struct hostap_tx_data {
struct sk_buff *skb;
int host_encrypt;
struct prism2_crypt_data *crypt;
void *sta_ptr;
};
ap_tx_ret hostap_handle_sta_tx(local_info_t *local, struct hostap_tx_data *tx);
void hostap_handle_sta_release(void *ptr);
void hostap_handle_sta_tx_exc(local_info_t *local, struct sk_buff *skb);
int hostap_update_sta_ps(local_info_t *local,
struct hostap_ieee80211_hdr *hdr);
typedef enum {
AP_RX_CONTINUE, AP_RX_DROP, AP_RX_EXIT, AP_RX_CONTINUE_NOT_AUTHORIZED
} ap_rx_ret;
ap_rx_ret hostap_handle_sta_rx(local_info_t *local, struct net_device *dev,
struct sk_buff *skb,
struct hostap_80211_rx_status *rx_stats,
int wds);
int hostap_handle_sta_crypto(local_info_t *local,
struct hostap_ieee80211_hdr *hdr,
struct prism2_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);
int hostap_update_rx_stats(struct ap_data *ap,
struct hostap_ieee80211_hdr *hdr,
struct hostap_80211_rx_status *rx_stats);
void hostap_update_rates(local_info_t *local);
void hostap_add_wds_links(local_info_t *local);
void hostap_wds_link_oper(local_info_t *local, u8 *addr, wds_oper_type type);
#ifndef PRISM2_NO_KERNEL_IEEE80211_MGMT
void hostap_deauth_all_stas(struct net_device *dev, struct ap_data *ap,
int resend);
#endif /* PRISM2_NO_KERNEL_IEEE80211_MGMT */
#endif /* HOSTAP_AP_H */
drivers/net/wireless/hostap/hostap_common.h
+557
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File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap_config.h
+86
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@@ -0,0 +1,86 @@
#ifndef HOSTAP_CONFIG_H
#define HOSTAP_CONFIG_H
#define PRISM2_VERSION "CVS"
/* In the previous versions of Host AP driver, support for user space version
* of IEEE 802.11 management (hostapd) used to be disabled in the default
* configuration. From now on, support for hostapd is always included and it is
* possible to disable kernel driver version of IEEE 802.11 management with a
* separate define, PRISM2_NO_KERNEL_IEEE80211_MGMT. */
/* #define PRISM2_NO_KERNEL_IEEE80211_MGMT */
/* Maximum number of events handler per one interrupt */
#define PRISM2_MAX_INTERRUPT_EVENTS 20
/* Use PCI bus master to copy data to/from BAP (only available for
* hostap_pci.o).
*
* Note! This is extremely experimental. PCI bus master is not supported by
* Intersil and it seems to have some problems at least on TX path (see below).
* The driver code for implementing bus master support is based on guessing
* and experimenting suitable control bits and these might not be correct.
* This code is included because using bus master makes a huge difference in
* host CPU load (something like 40% host CPU usage to 5-10% when sending or
* receiving at maximum throughput).
*
* Note2! Station firmware version 1.3.5 and primary firmware version 1.0.7
* have some fixes for PCI corruption and these (or newer) versions are
* recommended especially when using bus mastering.
*
* NOTE: PCI bus mastering code has not been updated for long time and it is
* not likely to compile and it will _not_ work as is. Only enable this if you
* are prepared to first fix the implementation..
*/
/* #define PRISM2_BUS_MASTER */
#ifdef PRISM2_BUS_MASTER
/* PCI bus master implementation seems to be broken in current
* hardware/firmware versions. Enable this to use enable command to fix
* something before starting bus master operation on TX path. This will add
* some latency and an extra interrupt to each TX packet. */
#define PRISM2_ENABLE_BEFORE_TX_BUS_MASTER
#endif /* PRISM2_BUS_MASTER */
/* Include code for downloading firmware images into volatile RAM. */
#define PRISM2_DOWNLOAD_SUPPORT
/* Allow kernel configuration to enable download support. */
#if !defined(PRISM2_DOWNLOAD_SUPPORT) && defined(CONFIG_HOSTAP_FIRMWARE)
#define PRISM2_DOWNLOAD_SUPPORT
#endif
#ifdef PRISM2_DOWNLOAD_SUPPORT
/* Allow writing firmware images into flash, i.e., to non-volatile storage.
* Before you enable this option, you should make absolutely sure that you are
* using prism2_srec utility that comes with THIS version of the driver!
* In addition, please note that it is possible to kill your card with
* non-volatile download if you are using incorrect image. This feature has not
* been fully tested, so please be careful with it. */
/* #define PRISM2_NON_VOLATILE_DOWNLOAD */
#endif /* PRISM2_DOWNLOAD_SUPPORT */
/* Save low-level I/O for debugging. This should not be enabled in normal use.
*/
/* #define PRISM2_IO_DEBUG */
/* Following defines can be used to remove unneeded parts of the driver, e.g.,
* to limit the size of the kernel module. Definitions can be added here in
* hostap_config.h or they can be added to make command with EXTRA_CFLAGS,
* e.g.,
* 'make pccard EXTRA_CFLAGS="-DPRISM2_NO_DEBUG -DPRISM2_NO_PROCFS_DEBUG"'
*/
/* Do not include debug messages into the driver */
/* #define PRISM2_NO_DEBUG */
/* Do not include /proc/net/prism2/wlan#/{registers,debug} */
/* #define PRISM2_NO_PROCFS_DEBUG */
/* Do not include station functionality (i.e., allow only Master (Host AP) mode
*/
/* #define PRISM2_NO_STATION_MODES */
#endif /* HOSTAP_CONFIG_H */
drivers/net/wireless/hostap/hostap_crypt.c
+167
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@@ -0,0 +1,167 @@
/*
* 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);
drivers/net/wireless/hostap/hostap_crypt.h
+50
View File
@@ -0,0 +1,50 @@
#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 */
drivers/net/wireless/hostap/hostap_crypt_ccmp.c
+486
View File
@@ -0,0 +1,486 @@
/*
* 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");
#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 = ((WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_DATA) &&
(WLAN_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);
drivers/net/wireless/hostap/hostap_crypt_tkip.c
+696
View File
File diff suppressed because it is too large Load Diff
drivers/net/wireless/hostap/hostap_crypt_wep.c
+281
View File
@@ -0,0 +1,281 @@
/*
* 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"
#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");
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);

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