#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
-#include "ieee802_11.h"
+#include <net/ieee80211.h>
#include "atmel.h"
#define DRIVER_MAJOR 0
static void atmel_wmem32(struct atmel_private *priv, u16 pos, u32 data);
static void atmel_command_irq(struct atmel_private *priv);
static int atmel_validate_channel(struct atmel_private *priv, int channel);
-static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 frame_len, u8 rssi);
static void atmel_management_timer(u_long a);
static void atmel_send_command(struct atmel_private *priv, int command, void *cmd, int cmd_size);
static int atmel_send_command_wait(struct atmel_private *priv, int command, void *cmd, int cmd_size);
-static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void atmel_transmit_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u8 *body, int body_len);
static u8 atmel_get_mib8(struct atmel_private *priv, u8 type, u8 index);
static int start_tx (struct sk_buff *skb, struct net_device *dev)
{
struct atmel_private *priv = netdev_priv(dev);
- struct ieee802_11_hdr header;
+ struct ieee80211_hdr header;
unsigned long flags;
u16 buff, frame_ctl, len = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
u8 SNAP_RFC1024[6] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
return 1;
}
- frame_ctl = IEEE802_11_FTYPE_DATA;
+ frame_ctl = IEEE80211_FTYPE_DATA;
header.duration_id = 0;
header.seq_ctl = 0;
if (priv->wep_is_on)
- frame_ctl |= IEEE802_11_FCTL_WEP;
+ frame_ctl |= IEEE80211_FCTL_WEP;
if (priv->operating_mode == IW_MODE_ADHOC) {
memcpy(&header.addr1, skb->data, 6);
memcpy(&header.addr2, dev->dev_addr, 6);
memcpy(&header.addr3, priv->BSSID, 6);
} else {
- frame_ctl |= IEEE802_11_FCTL_TODS;
+ frame_ctl |= IEEE80211_FCTL_TODS;
memcpy(&header.addr1, priv->CurrentBSSID, 6);
memcpy(&header.addr2, dev->dev_addr, 6);
memcpy(&header.addr3, skb->data, 6);
}
static void atmel_transmit_management_frame(struct atmel_private *priv,
- struct ieee802_11_hdr *header,
+ struct ieee80211_hdr *header,
u8 *body, int body_len)
{
u16 buff;
tx_update_descriptor(priv, header->addr1[0] & 0x01, len, buff, TX_PACKET_TYPE_MGMT);
}
-static void fast_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void fast_rx_path(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 msdu_size, u16 rx_packet_loc, u32 crc)
{
/* fast path: unfragmented packet copy directly into skbuf */
}
memcpy(skbp, header->addr1, 6); /* destination address */
- if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
memcpy(&skbp[6], header->addr3, 6);
else
memcpy(&skbp[6], header->addr2, 6); /* source address */
return (crc ^ 0xffffffff) == netcrc;
}
-static void frag_rx_path(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void frag_rx_path(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 msdu_size, u16 rx_packet_loc, u32 crc, u16 seq_no, u8 frag_no, int more_frags)
{
u8 mac4[6];
u8 source[6];
struct sk_buff *skb;
- if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
memcpy(source, header->addr3, 6);
else
memcpy(source, header->addr2, 6);
static void rx_done_irq(struct atmel_private *priv)
{
int i;
- struct ieee802_11_hdr header;
+ struct ieee80211_hdr header;
for (i = 0;
atmel_rmem8(priv, atmel_rx(priv, RX_DESC_FLAGS_OFFSET, priv->rx_desc_head)) == RX_DESC_FLAG_VALID &&
/* probe for CRC use here if needed once five packets have arrived with
the same crc status, we assume we know what's happening and stop probing */
if (priv->probe_crc) {
- if (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP)) {
+ if (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_WEP)) {
priv->do_rx_crc = probe_crc(priv, rx_packet_loc, msdu_size);
} else {
priv->do_rx_crc = probe_crc(priv, rx_packet_loc + 24, msdu_size - 24);
}
/* don't CRC header when WEP in use */
- if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE802_11_FCTL_WEP))) {
+ if (priv->do_rx_crc && (!priv->wep_is_on || !(frame_ctl & IEEE80211_FCTL_WEP))) {
crc = crc32_le(0xffffffff, (unsigned char *)&header, 24);
}
msdu_size -= 24; /* header */
- if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_DATA) {
+ if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) {
- int more_fragments = frame_ctl & IEEE802_11_FCTL_MOREFRAGS;
- u8 packet_fragment_no = seq_control & IEEE802_11_SCTL_FRAG;
- u16 packet_sequence_no = (seq_control & IEEE802_11_SCTL_SEQ) >> 4;
+ int more_fragments = frame_ctl & IEEE80211_FCTL_MOREFRAGS;
+ u8 packet_fragment_no = seq_control & IEEE80211_SCTL_FRAG;
+ u16 packet_sequence_no = (seq_control & IEEE80211_SCTL_SEQ) >> 4;
if (!more_fragments && packet_fragment_no == 0 ) {
fast_rx_path(priv, &header, msdu_size, rx_packet_loc, crc);
}
}
- if ((frame_ctl & IEEE802_11_FCTL_FTYPE) == IEEE802_11_FTYPE_MGMT) {
+ if ((frame_ctl & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
/* copy rest of packet into buffer */
atmel_copy_to_host(priv->dev, (unsigned char *)&priv->rx_buf, rx_packet_loc + 24, msdu_size);
static void send_authentication_request(struct atmel_private *priv, u8 *challenge, int challenge_len)
{
- struct ieee802_11_hdr header;
+ struct ieee80211_hdr header;
struct auth_body auth;
- header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT | IEEE802_11_STYPE_AUTH);
+ header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
header.duration_id = cpu_to_le16(0x8000);
header.seq_ctl = 0;
memcpy(header.addr1, priv->CurrentBSSID, 6);
auth.alg = cpu_to_le16(C80211_MGMT_AAN_SHAREDKEY);
/* no WEP for authentication frames with TrSeqNo 1 */
if (priv->CurrentAuthentTransactionSeqNum != 1)
- header.frame_ctl |= cpu_to_le16(IEEE802_11_FCTL_WEP);
+ header.frame_ctl |= cpu_to_le16(IEEE80211_FCTL_WEP);
} else {
auth.alg = cpu_to_le16(C80211_MGMT_AAN_OPENSYSTEM);
}
{
u8 *ssid_el_p;
int bodysize;
- struct ieee802_11_hdr header;
+ struct ieee80211_hdr header;
struct ass_req_format {
u16 capability;
u16 listen_interval;
u8 rates[4];
} body;
- header.frame_ctl = cpu_to_le16(IEEE802_11_FTYPE_MGMT |
- (is_reassoc ? IEEE802_11_STYPE_REASSOC_REQ : IEEE802_11_STYPE_ASSOC_REQ));
+ header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
+ (is_reassoc ? IEEE80211_STYPE_REASSOC_REQ : IEEE80211_STYPE_ASSOC_REQ));
header.duration_id = cpu_to_le16(0x8000);
header.seq_ctl = 0;
atmel_transmit_management_frame(priv, &header, (void *)&body, bodysize);
}
-static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee802_11_hdr *header)
+static int is_frame_from_current_bss(struct atmel_private *priv, struct ieee80211_hdr *header)
{
- if (le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_FROMDS)
+ if (le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_FROMDS)
return memcmp(header->addr3, priv->CurrentBSSID, 6) == 0;
else
return memcmp(header->addr2, priv->CurrentBSSID, 6) == 0;
}
-static void store_bss_info(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void store_bss_info(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 capability, u16 beacon_period, u8 channel, u8 rssi,
u8 ssid_len, u8 *ssid, int is_beacon)
{
}
/* deals with incoming managment frames. */
-static void atmel_management_frame(struct atmel_private *priv, struct ieee802_11_hdr *header,
+static void atmel_management_frame(struct atmel_private *priv, struct ieee80211_hdr *header,
u16 frame_len, u8 rssi)
{
u16 subtype;
- switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE802_11_FCTL_STYPE) {
+ switch (subtype = le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_STYPE) {
case C80211_SUBTYPE_MGMT_BEACON :
case C80211_SUBTYPE_MGMT_ProbeResponse:
+++ /dev/null
-#ifndef _IEEE802_11_H
-#define _IEEE802_11_H
-
-#define IEEE802_11_DATA_LEN 2304
-/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
- 6.2.1.1.2.
-
- The figure in section 7.1.2 suggests a body size of up to 2312
- bytes is allowed, which is a bit confusing, I suspect this
- represents the 2304 bytes of real data, plus a possible 8 bytes of
- WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
-
-
-#define IEEE802_11_HLEN 30
-#define IEEE802_11_FRAME_LEN (IEEE802_11_DATA_LEN + IEEE802_11_HLEN)
-
-struct ieee802_11_hdr {
- u16 frame_ctl;
- u16 duration_id;
- u8 addr1[ETH_ALEN];
- u8 addr2[ETH_ALEN];
- u8 addr3[ETH_ALEN];
- u16 seq_ctl;
- u8 addr4[ETH_ALEN];
-} __attribute__ ((packed));
-
-/* Frame control field constants */
-#define IEEE802_11_FCTL_VERS 0x0002
-#define IEEE802_11_FCTL_FTYPE 0x000c
-#define IEEE802_11_FCTL_STYPE 0x00f0
-#define IEEE802_11_FCTL_TODS 0x0100
-#define IEEE802_11_FCTL_FROMDS 0x0200
-#define IEEE802_11_FCTL_MOREFRAGS 0x0400
-#define IEEE802_11_FCTL_RETRY 0x0800
-#define IEEE802_11_FCTL_PM 0x1000
-#define IEEE802_11_FCTL_MOREDATA 0x2000
-#define IEEE802_11_FCTL_WEP 0x4000
-#define IEEE802_11_FCTL_ORDER 0x8000
-
-#define IEEE802_11_FTYPE_MGMT 0x0000
-#define IEEE802_11_FTYPE_CTL 0x0004
-#define IEEE802_11_FTYPE_DATA 0x0008
-
-/* management */
-#define IEEE802_11_STYPE_ASSOC_REQ 0x0000
-#define IEEE802_11_STYPE_ASSOC_RESP 0x0010
-#define IEEE802_11_STYPE_REASSOC_REQ 0x0020
-#define IEEE802_11_STYPE_REASSOC_RESP 0x0030
-#define IEEE802_11_STYPE_PROBE_REQ 0x0040
-#define IEEE802_11_STYPE_PROBE_RESP 0x0050
-#define IEEE802_11_STYPE_BEACON 0x0080
-#define IEEE802_11_STYPE_ATIM 0x0090
-#define IEEE802_11_STYPE_DISASSOC 0x00A0
-#define IEEE802_11_STYPE_AUTH 0x00B0
-#define IEEE802_11_STYPE_DEAUTH 0x00C0
-
-/* control */
-#define IEEE802_11_STYPE_PSPOLL 0x00A0
-#define IEEE802_11_STYPE_RTS 0x00B0
-#define IEEE802_11_STYPE_CTS 0x00C0
-#define IEEE802_11_STYPE_ACK 0x00D0
-#define IEEE802_11_STYPE_CFEND 0x00E0
-#define IEEE802_11_STYPE_CFENDACK 0x00F0
-
-/* data */
-#define IEEE802_11_STYPE_DATA 0x0000
-#define IEEE802_11_STYPE_DATA_CFACK 0x0010
-#define IEEE802_11_STYPE_DATA_CFPOLL 0x0020
-#define IEEE802_11_STYPE_DATA_CFACKPOLL 0x0030
-#define IEEE802_11_STYPE_NULLFUNC 0x0040
-#define IEEE802_11_STYPE_CFACK 0x0050
-#define IEEE802_11_STYPE_CFPOLL 0x0060
-#define IEEE802_11_STYPE_CFACKPOLL 0x0070
-
-#define IEEE802_11_SCTL_FRAG 0x000F
-#define IEEE802_11_SCTL_SEQ 0xFFF0
-
-#endif /* _IEEE802_11_H */
#include <linux/etherdevice.h>
#include <linux/wireless.h>
+#include <net/ieee80211.h>
+
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/system.h>
#include "hermes.h"
#include "hermes_rid.h"
#include "orinoco.h"
-#include "ieee802_11.h"
/********************************************************************/
/* Module information */
/********************************************************************/
#define ORINOCO_MIN_MTU 256
-#define ORINOCO_MAX_MTU (IEEE802_11_DATA_LEN - ENCAPS_OVERHEAD)
+#define ORINOCO_MAX_MTU (IEEE80211_DATA_LEN - ENCAPS_OVERHEAD)
#define SYMBOL_MAX_VER_LEN (14)
#define USER_BAP 0
if ( (new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU) )
return -EINVAL;
- if ( (new_mtu + ENCAPS_OVERHEAD + IEEE802_11_HLEN) >
+ if ( (new_mtu + ENCAPS_OVERHEAD + IEEE80211_HLEN) >
(priv->nicbuf_size - ETH_HLEN) )
return -EINVAL;
stats->rx_dropped++;
goto drop;
}
- if (length > IEEE802_11_DATA_LEN) {
+ if (length > IEEE80211_DATA_LEN) {
printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n",
dev->name, length);
stats->rx_length_errors++;
/* No need to lock, the hw_unavailable flag is already set in
* alloc_orinocodev() */
- priv->nicbuf_size = IEEE802_11_FRAME_LEN + ETH_HLEN;
+ priv->nicbuf_size = IEEE80211_FRAME_LEN + ETH_HLEN;
/* Initialize the firmware */
err = hermes_init(hw);
#define __WL3501_H__
#include <linux/spinlock.h>
-#include "ieee802_11.h"
+#include <net/ieee80211.h>
/* define for WLA 2.0 */
#define WL3501_BLKSZ 256
struct wl3501_80211_tx_hdr {
struct wl3501_80211_tx_plcp_hdr pclp_hdr;
- struct ieee802_11_hdr mac_hdr;
+ struct ieee80211_hdr mac_hdr;
} __attribute__ ((packed));
/*
--- /dev/null
+/*
+ * Merged with mainline ieee80211.h in Aug 2004. Original ieee802_11
+ * remains copyright by the original authors
+ *
+ * Portions of the merged code are based on Host AP (software wireless
+ * LAN access point) driver for Intersil Prism2/2.5/3.
+ *
+ * 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>
+ *
+ * Adaption to a generic IEEE 802.11 stack by James Ketrenos
+ * <jketreno@linux.intel.com>
+ * Copyright (c) 2004, Intel Corporation
+ *
+ * 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.
+ */
+#ifndef IEEE80211_H
+#define IEEE80211_H
+#include <linux/if_ether.h> /* ETH_ALEN */
+#include <linux/kernel.h> /* ARRAY_SIZE */
+
+#if WIRELESS_EXT < 17
+#define IW_QUAL_QUAL_INVALID 0x10
+#define IW_QUAL_LEVEL_INVALID 0x20
+#define IW_QUAL_NOISE_INVALID 0x40
+#define IW_QUAL_QUAL_UPDATED 0x1
+#define IW_QUAL_LEVEL_UPDATED 0x2
+#define IW_QUAL_NOISE_UPDATED 0x4
+#endif
+
+#define IEEE80211_DATA_LEN 2304
+/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
+ 6.2.1.1.2.
+
+ The figure in section 7.1.2 suggests a body size of up to 2312
+ bytes is allowed, which is a bit confusing, I suspect this
+ represents the 2304 bytes of real data, plus a possible 8 bytes of
+ WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
+
+
+#define IEEE80211_HLEN 30
+#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
+
+struct ieee80211_hdr {
+ u16 frame_ctl;
+ u16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+ u16 seq_ctl;
+ u8 addr4[ETH_ALEN];
+} __attribute__ ((packed));
+
+struct ieee80211_hdr_3addr {
+ u16 frame_ctl;
+ u16 duration_id;
+ u8 addr1[ETH_ALEN];
+ u8 addr2[ETH_ALEN];
+ u8 addr3[ETH_ALEN];
+ u16 seq_ctl;
+} __attribute__ ((packed));
+
+enum eap_type {
+ EAP_PACKET = 0,
+ EAPOL_START,
+ EAPOL_LOGOFF,
+ EAPOL_KEY,
+ EAPOL_ENCAP_ASF_ALERT
+};
+
+static const char *eap_types[] = {
+ [EAP_PACKET] = "EAP-Packet",
+ [EAPOL_START] = "EAPOL-Start",
+ [EAPOL_LOGOFF] = "EAPOL-Logoff",
+ [EAPOL_KEY] = "EAPOL-Key",
+ [EAPOL_ENCAP_ASF_ALERT] = "EAPOL-Encap-ASF-Alert"
+};
+
+static inline const char *eap_get_type(int type)
+{
+ return (type >= ARRAY_SIZE(eap_types)) ? "Unknown" : eap_types[type];
+}
+
+struct eapol {
+ u8 snap[6];
+ u16 ethertype;
+ u8 version;
+ u8 type;
+ u16 length;
+} __attribute__ ((packed));
+
+#define IEEE80211_3ADDR_LEN 24
+#define IEEE80211_4ADDR_LEN 30
+#define IEEE80211_FCS_LEN 4
+
+#define MIN_FRAG_THRESHOLD 256U
+#define MAX_FRAG_THRESHOLD 2346U
+
+/* Frame control field constants */
+#define IEEE80211_FCTL_VERS 0x0002
+#define IEEE80211_FCTL_FTYPE 0x000c
+#define IEEE80211_FCTL_STYPE 0x00f0
+#define IEEE80211_FCTL_TODS 0x0100
+#define IEEE80211_FCTL_FROMDS 0x0200
+#define IEEE80211_FCTL_MOREFRAGS 0x0400
+#define IEEE80211_FCTL_RETRY 0x0800
+#define IEEE80211_FCTL_PM 0x1000
+#define IEEE80211_FCTL_MOREDATA 0x2000
+#define IEEE80211_FCTL_WEP 0x4000
+#define IEEE80211_FCTL_ORDER 0x8000
+
+#define IEEE80211_FTYPE_MGMT 0x0000
+#define IEEE80211_FTYPE_CTL 0x0004
+#define IEEE80211_FTYPE_DATA 0x0008
+
+/* management */
+#define IEEE80211_STYPE_ASSOC_REQ 0x0000
+#define IEEE80211_STYPE_ASSOC_RESP 0x0010
+#define IEEE80211_STYPE_REASSOC_REQ 0x0020
+#define IEEE80211_STYPE_REASSOC_RESP 0x0030
+#define IEEE80211_STYPE_PROBE_REQ 0x0040
+#define IEEE80211_STYPE_PROBE_RESP 0x0050
+#define IEEE80211_STYPE_BEACON 0x0080
+#define IEEE80211_STYPE_ATIM 0x0090
+#define IEEE80211_STYPE_DISASSOC 0x00A0
+#define IEEE80211_STYPE_AUTH 0x00B0
+#define IEEE80211_STYPE_DEAUTH 0x00C0
+
+/* control */
+#define IEEE80211_STYPE_PSPOLL 0x00A0
+#define IEEE80211_STYPE_RTS 0x00B0
+#define IEEE80211_STYPE_CTS 0x00C0
+#define IEEE80211_STYPE_ACK 0x00D0
+#define IEEE80211_STYPE_CFEND 0x00E0
+#define IEEE80211_STYPE_CFENDACK 0x00F0
+
+/* data */
+#define IEEE80211_STYPE_DATA 0x0000
+#define IEEE80211_STYPE_DATA_CFACK 0x0010
+#define IEEE80211_STYPE_DATA_CFPOLL 0x0020
+#define IEEE80211_STYPE_DATA_CFACKPOLL 0x0030
+#define IEEE80211_STYPE_NULLFUNC 0x0040
+#define IEEE80211_STYPE_CFACK 0x0050
+#define IEEE80211_STYPE_CFPOLL 0x0060
+#define IEEE80211_STYPE_CFACKPOLL 0x0070
+
+#define IEEE80211_SCTL_FRAG 0x000F
+#define IEEE80211_SCTL_SEQ 0xFFF0
+
+
+/* debug macros */
+
+#ifdef CONFIG_IEEE80211_DEBUG
+extern u32 ieee80211_debug_level;
+#define IEEE80211_DEBUG(level, fmt, args...) \
+do { if (ieee80211_debug_level & (level)) \
+ printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
+ in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
+#else
+#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
+#endif /* CONFIG_IEEE80211_DEBUG */
+
+/*
+ * To use the debug system;
+ *
+ * If you are defining a new debug classification, simply add it to the #define
+ * list here in the form of:
+ *
+ * #define IEEE80211_DL_xxxx VALUE
+ *
+ * shifting value to the left one bit from the previous entry. xxxx should be
+ * the name of the classification (for example, WEP)
+ *
+ * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
+ * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
+ * to send output to that classification.
+ *
+ * To add your debug level to the list of levels seen when you perform
+ *
+ * % cat /proc/net/ipw/debug_level
+ *
+ * you simply need to add your entry to the ipw_debug_levels array.
+ *
+ * If you do not see debug_level in /proc/net/ipw then you do not have
+ * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
+ *
+ */
+
+#define IEEE80211_DL_INFO (1<<0)
+#define IEEE80211_DL_WX (1<<1)
+#define IEEE80211_DL_SCAN (1<<2)
+#define IEEE80211_DL_STATE (1<<3)
+#define IEEE80211_DL_MGMT (1<<4)
+#define IEEE80211_DL_FRAG (1<<5)
+#define IEEE80211_DL_EAP (1<<6)
+#define IEEE80211_DL_DROP (1<<7)
+
+#define IEEE80211_DL_TX (1<<8)
+#define IEEE80211_DL_RX (1<<9)
+
+#define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
+#define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
+#define IEEE80211_DEBUG_INFO(f, a...) IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
+
+#define IEEE80211_DEBUG_WX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
+#define IEEE80211_DEBUG_SCAN(f, a...) IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
+#define IEEE80211_DEBUG_STATE(f, a...) IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
+#define IEEE80211_DEBUG_MGMT(f, a...) IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
+#define IEEE80211_DEBUG_FRAG(f, a...) IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
+#define IEEE80211_DEBUG_EAP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_EAP, f, ## a)
+#define IEEE80211_DEBUG_DROP(f, a...) IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
+#define IEEE80211_DEBUG_TX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
+#define IEEE80211_DEBUG_RX(f, a...) IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <linux/if_arp.h> /* ARPHRD_ETHER */
+
+#ifndef WIRELESS_SPY
+#define WIRELESS_SPY // enable iwspy support
+#endif
+#include <net/iw_handler.h> // new driver API
+
+#ifndef ETH_P_PAE
+#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
+#endif /* ETH_P_PAE */
+
+#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
+
+#ifndef ETH_P_80211_RAW
+#define ETH_P_80211_RAW (ETH_P_ECONET + 1)
+#endif
+
+/* IEEE 802.11 defines */
+
+#define P80211_OUI_LEN 3
+
+struct ieee80211_snap_hdr {
+
+ u8 dsap; /* always 0xAA */
+ u8 ssap; /* always 0xAA */
+ u8 ctrl; /* always 0x03 */
+ u8 oui[P80211_OUI_LEN]; /* organizational universal id */
+
+} __attribute__ ((packed));
+
+#define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
+
+#define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
+#define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
+
+#define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
+#define WLAN_GET_SEQ_SEQ(seq) ((seq) & IEEE80211_SCTL_SEQ)
+
+/* Authentication algorithms */
+#define WLAN_AUTH_OPEN 0
+#define WLAN_AUTH_SHARED_KEY 1
+
+#define WLAN_AUTH_CHALLENGE_LEN 128
+
+#define WLAN_CAPABILITY_BSS (1<<0)
+#define WLAN_CAPABILITY_IBSS (1<<1)
+#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
+#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
+#define WLAN_CAPABILITY_PRIVACY (1<<4)
+#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
+#define WLAN_CAPABILITY_PBCC (1<<6)
+#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
+
+/* Status codes */
+#define WLAN_STATUS_SUCCESS 0
+#define WLAN_STATUS_UNSPECIFIED_FAILURE 1
+#define WLAN_STATUS_CAPS_UNSUPPORTED 10
+#define WLAN_STATUS_REASSOC_NO_ASSOC 11
+#define WLAN_STATUS_ASSOC_DENIED_UNSPEC 12
+#define WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG 13
+#define WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION 14
+#define WLAN_STATUS_CHALLENGE_FAIL 15
+#define WLAN_STATUS_AUTH_TIMEOUT 16
+#define WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA 17
+#define WLAN_STATUS_ASSOC_DENIED_RATES 18
+/* 802.11b */
+#define WLAN_STATUS_ASSOC_DENIED_NOSHORT 19
+#define WLAN_STATUS_ASSOC_DENIED_NOPBCC 20
+#define WLAN_STATUS_ASSOC_DENIED_NOAGILITY 21
+
+/* Reason codes */
+#define WLAN_REASON_UNSPECIFIED 1
+#define WLAN_REASON_PREV_AUTH_NOT_VALID 2
+#define WLAN_REASON_DEAUTH_LEAVING 3
+#define WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY 4
+#define WLAN_REASON_DISASSOC_AP_BUSY 5
+#define WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA 6
+#define WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA 7
+#define WLAN_REASON_DISASSOC_STA_HAS_LEFT 8
+#define WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH 9
+
+
+/* Information Element IDs */
+#define WLAN_EID_SSID 0
+#define WLAN_EID_SUPP_RATES 1
+#define WLAN_EID_FH_PARAMS 2
+#define WLAN_EID_DS_PARAMS 3
+#define WLAN_EID_CF_PARAMS 4
+#define WLAN_EID_TIM 5
+#define WLAN_EID_IBSS_PARAMS 6
+#define WLAN_EID_CHALLENGE 16
+#define WLAN_EID_RSN 48
+#define WLAN_EID_GENERIC 221
+
+#define IEEE80211_MGMT_HDR_LEN 24
+#define IEEE80211_DATA_HDR3_LEN 24
+#define IEEE80211_DATA_HDR4_LEN 30
+
+
+#define IEEE80211_STATMASK_SIGNAL (1<<0)
+#define IEEE80211_STATMASK_RSSI (1<<1)
+#define IEEE80211_STATMASK_NOISE (1<<2)
+#define IEEE80211_STATMASK_RATE (1<<3)
+#define IEEE80211_STATMASK_WEMASK 0x7
+
+
+#define IEEE80211_CCK_MODULATION (1<<0)
+#define IEEE80211_OFDM_MODULATION (1<<1)
+
+#define IEEE80211_24GHZ_BAND (1<<0)
+#define IEEE80211_52GHZ_BAND (1<<1)
+
+#define IEEE80211_CCK_RATE_1MB 0x02
+#define IEEE80211_CCK_RATE_2MB 0x04
+#define IEEE80211_CCK_RATE_5MB 0x0B
+#define IEEE80211_CCK_RATE_11MB 0x16
+#define IEEE80211_OFDM_RATE_6MB 0x0C
+#define IEEE80211_OFDM_RATE_9MB 0x12
+#define IEEE80211_OFDM_RATE_12MB 0x18
+#define IEEE80211_OFDM_RATE_18MB 0x24
+#define IEEE80211_OFDM_RATE_24MB 0x30
+#define IEEE80211_OFDM_RATE_36MB 0x48
+#define IEEE80211_OFDM_RATE_48MB 0x60
+#define IEEE80211_OFDM_RATE_54MB 0x6C
+#define IEEE80211_BASIC_RATE_MASK 0x80
+
+#define IEEE80211_CCK_RATE_1MB_MASK (1<<0)
+#define IEEE80211_CCK_RATE_2MB_MASK (1<<1)
+#define IEEE80211_CCK_RATE_5MB_MASK (1<<2)
+#define IEEE80211_CCK_RATE_11MB_MASK (1<<3)
+#define IEEE80211_OFDM_RATE_6MB_MASK (1<<4)
+#define IEEE80211_OFDM_RATE_9MB_MASK (1<<5)
+#define IEEE80211_OFDM_RATE_12MB_MASK (1<<6)
+#define IEEE80211_OFDM_RATE_18MB_MASK (1<<7)
+#define IEEE80211_OFDM_RATE_24MB_MASK (1<<8)
+#define IEEE80211_OFDM_RATE_36MB_MASK (1<<9)
+#define IEEE80211_OFDM_RATE_48MB_MASK (1<<10)
+#define IEEE80211_OFDM_RATE_54MB_MASK (1<<11)
+
+#define IEEE80211_CCK_RATES_MASK 0x0000000F
+#define IEEE80211_CCK_BASIC_RATES_MASK (IEEE80211_CCK_RATE_1MB_MASK | \
+ IEEE80211_CCK_RATE_2MB_MASK)
+#define IEEE80211_CCK_DEFAULT_RATES_MASK (IEEE80211_CCK_BASIC_RATES_MASK | \
+ IEEE80211_CCK_RATE_5MB_MASK | \
+ IEEE80211_CCK_RATE_11MB_MASK)
+
+#define IEEE80211_OFDM_RATES_MASK 0x00000FF0
+#define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
+ IEEE80211_OFDM_RATE_12MB_MASK | \
+ IEEE80211_OFDM_RATE_24MB_MASK)
+#define IEEE80211_OFDM_DEFAULT_RATES_MASK (IEEE80211_OFDM_BASIC_RATES_MASK | \
+ IEEE80211_OFDM_RATE_9MB_MASK | \
+ IEEE80211_OFDM_RATE_18MB_MASK | \
+ IEEE80211_OFDM_RATE_36MB_MASK | \
+ IEEE80211_OFDM_RATE_48MB_MASK | \
+ IEEE80211_OFDM_RATE_54MB_MASK)
+#define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
+ IEEE80211_CCK_DEFAULT_RATES_MASK)
+
+#define IEEE80211_NUM_OFDM_RATES 8
+#define IEEE80211_NUM_CCK_RATES 4
+#define IEEE80211_OFDM_SHIFT_MASK_A 4
+
+
+
+
+/* NOTE: This data is for statistical purposes; not all hardware provides this
+ * information for frames received. Not setting these will not cause
+ * any adverse affects. */
+struct ieee80211_rx_stats {
+ u32 mac_time;
+ s8 rssi;
+ u8 signal;
+ u8 noise;
+ u16 rate; /* in 100 kbps */
+ u8 received_channel;
+ u8 control;
+ u8 mask;
+ u8 freq;
+ u16 len;
+};
+
+/* IEEE 802.11 requires that STA supports concurrent reception of at least
+ * three fragmented frames. This define can be increased to support more
+ * concurrent frames, but it should be noted that each entry can consume about
+ * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
+#define IEEE80211_FRAG_CACHE_LEN 4
+
+struct ieee80211_frag_entry {
+ unsigned long first_frag_time;
+ unsigned int seq;
+ unsigned int last_frag;
+ struct sk_buff *skb;
+ u8 src_addr[ETH_ALEN];
+ u8 dst_addr[ETH_ALEN];
+};
+
+struct ieee80211_stats {
+ unsigned int tx_unicast_frames;
+ unsigned int tx_multicast_frames;
+ unsigned int tx_fragments;
+ unsigned int tx_unicast_octets;
+ unsigned int tx_multicast_octets;
+ unsigned int tx_deferred_transmissions;
+ unsigned int tx_single_retry_frames;
+ unsigned int tx_multiple_retry_frames;
+ unsigned int tx_retry_limit_exceeded;
+ unsigned int tx_discards;
+ unsigned int rx_unicast_frames;
+ unsigned int rx_multicast_frames;
+ unsigned int rx_fragments;
+ unsigned int rx_unicast_octets;
+ unsigned int rx_multicast_octets;
+ unsigned int rx_fcs_errors;
+ unsigned int rx_discards_no_buffer;
+ unsigned int tx_discards_wrong_sa;
+ unsigned int rx_discards_undecryptable;
+ unsigned int rx_message_in_msg_fragments;
+ unsigned int rx_message_in_bad_msg_fragments;
+};
+
+struct ieee80211_device;
+
+#include "ieee80211_crypt.h"
+
+#define SEC_KEY_1 (1<<0)
+#define SEC_KEY_2 (1<<1)
+#define SEC_KEY_3 (1<<2)
+#define SEC_KEY_4 (1<<3)
+#define SEC_ACTIVE_KEY (1<<4)
+#define SEC_AUTH_MODE (1<<5)
+#define SEC_UNICAST_GROUP (1<<6)
+#define SEC_LEVEL (1<<7)
+#define SEC_ENABLED (1<<8)
+
+#define SEC_LEVEL_0 0 /* None */
+#define SEC_LEVEL_1 1 /* WEP 40 and 104 bit */
+#define SEC_LEVEL_2 2 /* Level 1 + TKIP */
+#define SEC_LEVEL_2_CKIP 3 /* Level 1 + CKIP */
+#define SEC_LEVEL_3 4 /* Level 2 + CCMP */
+
+#define WEP_KEYS 4
+#define WEP_KEY_LEN 13
+
+struct ieee80211_security {
+ u16 active_key:2,
+ enabled:1,
+ auth_mode:2,
+ auth_algo:4,
+ unicast_uses_group:1;
+ u8 key_sizes[WEP_KEYS];
+ u8 keys[WEP_KEYS][WEP_KEY_LEN];
+ u8 level;
+ u16 flags;
+} __attribute__ ((packed));
+
+
+/*
+
+ 802.11 data frame from AP
+
+ ,-------------------------------------------------------------------.
+Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
+ |------|------|---------|---------|---------|------|---------|------|
+Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | frame | fcs |
+ | | tion | (BSSID) | | | ence | data | |
+ `-------------------------------------------------------------------'
+
+Total: 28-2340 bytes
+
+*/
+
+struct ieee80211_header_data {
+ u16 frame_ctl;
+ u16 duration_id;
+ u8 addr1[6];
+ u8 addr2[6];
+ u8 addr3[6];
+ u16 seq_ctrl;
+};
+
+#define BEACON_PROBE_SSID_ID_POSITION 12
+
+/* Management Frame Information Element Types */
+#define MFIE_TYPE_SSID 0
+#define MFIE_TYPE_RATES 1
+#define MFIE_TYPE_FH_SET 2
+#define MFIE_TYPE_DS_SET 3
+#define MFIE_TYPE_CF_SET 4
+#define MFIE_TYPE_TIM 5
+#define MFIE_TYPE_IBSS_SET 6
+#define MFIE_TYPE_CHALLENGE 16
+#define MFIE_TYPE_RSN 48
+#define MFIE_TYPE_RATES_EX 50
+#define MFIE_TYPE_GENERIC 221
+
+struct ieee80211_info_element_hdr {
+ u8 id;
+ u8 len;
+} __attribute__ ((packed));
+
+struct ieee80211_info_element {
+ u8 id;
+ u8 len;
+ u8 data[0];
+} __attribute__ ((packed));
+
+/*
+ * These are the data types that can make up management packets
+ *
+ u16 auth_algorithm;
+ u16 auth_sequence;
+ u16 beacon_interval;
+ u16 capability;
+ u8 current_ap[ETH_ALEN];
+ u16 listen_interval;
+ struct {
+ u16 association_id:14, reserved:2;
+ } __attribute__ ((packed));
+ u32 time_stamp[2];
+ u16 reason;
+ u16 status;
+*/
+
+struct ieee80211_authentication {
+ struct ieee80211_header_data header;
+ u16 algorithm;
+ u16 transaction;
+ u16 status;
+ struct ieee80211_info_element info_element;
+} __attribute__ ((packed));
+
+
+struct ieee80211_probe_response {
+ struct ieee80211_header_data header;
+ u32 time_stamp[2];
+ u16 beacon_interval;
+ u16 capability;
+ struct ieee80211_info_element info_element;
+} __attribute__ ((packed));
+
+struct ieee80211_assoc_request_frame {
+ u16 capability;
+ u16 listen_interval;
+ u8 current_ap[ETH_ALEN];
+ struct ieee80211_info_element info_element;
+} __attribute__ ((packed));
+
+struct ieee80211_assoc_response_frame {
+ struct ieee80211_hdr_3addr header;
+ u16 capability;
+ u16 status;
+ u16 aid;
+ struct ieee80211_info_element info_element; /* supported rates */
+} __attribute__ ((packed));
+
+
+struct ieee80211_txb {
+ u8 nr_frags;
+ u8 encrypted;
+ u16 reserved;
+ u16 frag_size;
+ u16 payload_size;
+ struct sk_buff *fragments[0];
+};
+
+
+/* SWEEP TABLE ENTRIES NUMBER*/
+#define MAX_SWEEP_TAB_ENTRIES 42
+#define MAX_SWEEP_TAB_ENTRIES_PER_PACKET 7
+/* MAX_RATES_LENGTH needs to be 12. The spec says 8, and many APs
+ * only use 8, and then use extended rates for the remaining supported
+ * rates. Other APs, however, stick all of their supported rates on the
+ * main rates information element... */
+#define MAX_RATES_LENGTH ((u8)12)
+#define MAX_RATES_EX_LENGTH ((u8)16)
+#define MAX_NETWORK_COUNT 128
+
+#define CRC_LENGTH 4U
+
+#define MAX_WPA_IE_LEN 64
+
+#define NETWORK_EMPTY_ESSID (1<<0)
+#define NETWORK_HAS_OFDM (1<<1)
+#define NETWORK_HAS_CCK (1<<2)
+
+struct ieee80211_network {
+ /* These entries are used to identify a unique network */
+ u8 bssid[ETH_ALEN];
+ u8 channel;
+ /* Ensure null-terminated for any debug msgs */
+ u8 ssid[IW_ESSID_MAX_SIZE + 1];
+ u8 ssid_len;
+
+ /* These are network statistics */
+ struct ieee80211_rx_stats stats;
+ u16 capability;
+ u8 rates[MAX_RATES_LENGTH];
+ u8 rates_len;
+ u8 rates_ex[MAX_RATES_EX_LENGTH];
+ u8 rates_ex_len;
+ unsigned long last_scanned;
+ u8 mode;
+ u8 flags;
+ u32 last_associate;
+ u32 time_stamp[2];
+ u16 beacon_interval;
+ u16 listen_interval;
+ u16 atim_window;
+ u8 wpa_ie[MAX_WPA_IE_LEN];
+ size_t wpa_ie_len;
+ u8 rsn_ie[MAX_WPA_IE_LEN];
+ size_t rsn_ie_len;
+ struct list_head list;
+};
+
+enum ieee80211_state {
+ IEEE80211_UNINITIALIZED = 0,
+ IEEE80211_INITIALIZED,
+ IEEE80211_ASSOCIATING,
+ IEEE80211_ASSOCIATED,
+ IEEE80211_AUTHENTICATING,
+ IEEE80211_AUTHENTICATED,
+ IEEE80211_SHUTDOWN
+};
+
+#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
+#define DEFAULT_FTS 2346
+#define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
+#define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
+
+
+extern inline int is_multicast_ether_addr(const u8 *addr)
+{
+ return ((addr[0] != 0xff) && (0x01 & addr[0]));
+}
+
+extern inline int is_broadcast_ether_addr(const u8 *addr)
+{
+ return ((addr[0] == 0xff) && (addr[1] == 0xff) && (addr[2] == 0xff) && \
+ (addr[3] == 0xff) && (addr[4] == 0xff) && (addr[5] == 0xff));
+}
+
+#define CFG_IEEE80211_RESERVE_FCS (1<<0)
+#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
+
+struct ieee80211_device {
+ struct net_device *dev;
+
+ /* Bookkeeping structures */
+ struct net_device_stats stats;
+ struct ieee80211_stats ieee_stats;
+
+ /* Probe / Beacon management */
+ struct list_head network_free_list;
+ struct list_head network_list;
+ struct ieee80211_network *networks;
+ int scans;
+ int scan_age;
+
+ int iw_mode; /* operating mode (IW_MODE_*) */
+
+ spinlock_t lock;
+
+ int tx_headroom; /* Set to size of any additional room needed at front
+ * of allocated Tx SKBs */
+ u32 config;
+
+ /* WEP and other encryption related settings at the device level */
+ int open_wep; /* Set to 1 to allow unencrypted frames */
+
+ int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
+ * WEP key changes */
+
+ /* If the host performs {en,de}cryption, then set to 1 */
+ int host_encrypt;
+ int host_decrypt;
+ int ieee802_1x; /* is IEEE 802.1X used */
+
+ /* WPA data */
+ int wpa_enabled;
+ int drop_unencrypted;
+ int tkip_countermeasures;
+ int privacy_invoked;
+ size_t wpa_ie_len;
+ u8 *wpa_ie;
+
+ struct list_head crypt_deinit_list;
+ struct ieee80211_crypt_data *crypt[WEP_KEYS];
+ int tx_keyidx; /* default TX key index (crypt[tx_keyidx]) */
+ struct timer_list crypt_deinit_timer;
+
+ int bcrx_sta_key; /* use individual keys to override default keys even
+ * with RX of broad/multicast frames */
+
+ /* Fragmentation structures */
+ struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
+ unsigned int frag_next_idx;
+ u16 fts; /* Fragmentation Threshold */
+
+ /* Association info */
+ u8 bssid[ETH_ALEN];
+
+ enum ieee80211_state state;
+
+ int mode; /* A, B, G */
+ int modulation; /* CCK, OFDM */
+ int freq_band; /* 2.4Ghz, 5.2Ghz, Mixed */
+ int abg_ture; /* ABG flag */
+
+ /* Callback functions */
+ void (*set_security)(struct net_device *dev,
+ struct ieee80211_security *sec);
+ int (*hard_start_xmit)(struct ieee80211_txb *txb,
+ struct net_device *dev);
+ int (*reset_port)(struct net_device *dev);
+
+ /* This must be the last item so that it points to the data
+ * allocated beyond this structure by alloc_ieee80211 */
+ u8 priv[0];
+};
+
+#define IEEE_A (1<<0)
+#define IEEE_B (1<<1)
+#define IEEE_G (1<<2)
+#define IEEE_MODE_MASK (IEEE_A|IEEE_B|IEEE_G)
+
+extern inline void *ieee80211_priv(struct net_device *dev)
+{
+ return ((struct ieee80211_device *)netdev_priv(dev))->priv;
+}
+
+extern inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
+{
+ /* Single white space is for Linksys APs */
+ if (essid_len == 1 && essid[0] == ' ')
+ return 1;
+
+ /* Otherwise, if the entire essid is 0, we assume it is hidden */
+ while (essid_len) {
+ essid_len--;
+ if (essid[essid_len] != '\0')
+ return 0;
+ }
+
+ return 1;
+}
+
+extern inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee, int mode)
+{
+ /*
+ * It is possible for both access points and our device to support
+ * combinations of modes, so as long as there is one valid combination
+ * of ap/device supported modes, then return success
+ *
+ */
+ if ((mode & IEEE_A) &&
+ (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
+ (ieee->freq_band & IEEE80211_52GHZ_BAND))
+ return 1;
+
+ if ((mode & IEEE_G) &&
+ (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
+ (ieee->freq_band & IEEE80211_24GHZ_BAND))
+ return 1;
+
+ if ((mode & IEEE_B) &&
+ (ieee->modulation & IEEE80211_CCK_MODULATION) &&
+ (ieee->freq_band & IEEE80211_24GHZ_BAND))
+ return 1;
+
+ return 0;
+}
+
+extern inline int ieee80211_get_hdrlen(u16 fc)
+{
+ int hdrlen = 24;
+
+ switch (WLAN_FC_GET_TYPE(fc)) {
+ case IEEE80211_FTYPE_DATA:
+ if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
+ hdrlen = 30; /* Addr4 */
+ break;
+ case IEEE80211_FTYPE_CTL:
+ switch (WLAN_FC_GET_STYPE(fc)) {
+ case IEEE80211_STYPE_CTS:
+ case IEEE80211_STYPE_ACK:
+ hdrlen = 10;
+ break;
+ default:
+ hdrlen = 16;
+ break;
+ }
+ break;
+ }
+
+ return hdrlen;
+}
+
+
+
+/* ieee80211.c */
+extern void free_ieee80211(struct net_device *dev);
+extern struct net_device *alloc_ieee80211(int sizeof_priv);
+
+extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
+
+/* ieee80211_tx.c */
+
+
+extern int ieee80211_xmit(struct sk_buff *skb,
+ struct net_device *dev);
+extern void ieee80211_txb_free(struct ieee80211_txb *);
+
+
+/* ieee80211_rx.c */
+extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+ struct ieee80211_rx_stats *rx_stats);
+extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
+ struct ieee80211_hdr *header,
+ struct ieee80211_rx_stats *stats);
+
+/* iee80211_wx.c */
+extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *key);
+extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *key);
+extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *key);
+
+
+extern inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
+{
+ ieee->scans++;
+}
+
+extern inline int ieee80211_get_scans(struct ieee80211_device *ieee)
+{
+ return ieee->scans;
+}
+
+static inline const char *escape_essid(const char *essid, u8 essid_len) {
+ static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
+ const char *s = essid;
+ char *d = escaped;
+
+ if (ieee80211_is_empty_essid(essid, essid_len)) {
+ memcpy(escaped, "<hidden>", sizeof("<hidden>"));
+ return escaped;
+ }
+
+ essid_len = min(essid_len, (u8)IW_ESSID_MAX_SIZE);
+ while (essid_len--) {
+ if (*s == '\0') {
+ *d++ = '\\';
+ *d++ = '0';
+ s++;
+ } else {
+ *d++ = *s++;
+ }
+ }
+ *d = '\0';
+ return escaped;
+}
+#endif /* IEEE80211_H */
--- /dev/null
+/*
+ * Original code based on Host AP (software wireless LAN access point) driver
+ * for Intersil Prism2/2.5/3.
+ *
+ * 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>
+ *
+ * Adaption to a generic IEEE 802.11 stack by James Ketrenos
+ * <jketreno@linux.intel.com>
+ *
+ * Copyright (c) 2004, Intel Corporation
+ *
+ * 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.
+ */
+
+/*
+ * This file defines the interface to the ieee80211 crypto module.
+ */
+#ifndef IEEE80211_CRYPT_H
+#define IEEE80211_CRYPT_H
+
+#include <linux/skbuff.h>
+
+struct ieee80211_crypto_ops {
+ const 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;
+
+ struct module *owner;
+};
+
+struct ieee80211_crypt_data {
+ struct list_head list; /* delayed deletion list */
+ struct ieee80211_crypto_ops *ops;
+ void *priv;
+ atomic_t refcnt;
+};
+
+int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops);
+int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops);
+struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name);
+void ieee80211_crypt_deinit_entries(struct ieee80211_device *, int);
+void ieee80211_crypt_deinit_handler(unsigned long);
+void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
+ struct ieee80211_crypt_data **crypt);
+
+#endif
source "net/bluetooth/Kconfig"
+source "net/ieee80211/Kconfig"
+
source "drivers/net/Kconfig"
endmenu
obj-$(CONFIG_ECONET) += econet/
obj-$(CONFIG_VLAN_8021Q) += 8021q/
obj-$(CONFIG_IP_SCTP) += sctp/
+obj-$(CONFIG_IEEE80211) += ieee80211/
ifeq ($(CONFIG_NET),y)
obj-$(CONFIG_SYSCTL) += sysctl_net.o
--- /dev/null
+config IEEE80211
+ tristate "Generic IEEE 802.11 Networking Stack"
+ select NET_RADIO
+ ---help---
+ This option enables the hardware independent IEEE 802.11
+ networking stack.
+
+config IEEE80211_DEBUG
+ bool "Enable full debugging output"
+ depends on IEEE80211
+ ---help---
+ This option will enable debug tracing output for the
+ ieee80211 network stack.
+
+ This will result in the kernel module being ~70k larger. You
+ can control which debug output is sent to the kernel log by
+ setting the value in
+
+ /proc/net/ieee80211/debug_level
+
+ For example:
+
+ % echo 0x00000FFO > /proc/net/ieee80211/debug_level
+
+ For a list of values you can assign to debug_level, you
+ can look at the bit mask values in <net/ieee80211.h>
+
+ If you are not trying to debug or develop the ieee80211
+ subsystem, you most likely want to say N here.
+
+config IEEE80211_CRYPT_WEP
+ tristate "IEEE 802.11 WEP encryption (802.1x)"
+ depends on IEEE80211
+ select CRYPTO
+ select CRYPTO_ARC4
+ select CRC32
+ ---help---
+ Include software based cipher suites in support of IEEE
+ 802.11's WEP. This is needed for WEP as well as 802.1x.
+
+ This can be compiled as a modules and it will be called
+ "ieee80211_crypt_wep".
+
+config IEEE80211_CRYPT_CCMP
+ tristate "IEEE 802.11i CCMP support"
+ depends on IEEE80211
+ select CRYPTO_AES
+ ---help---
+ Include software based cipher suites in support of IEEE 802.11i
+ (aka TGi, WPA, WPA2, WPA-PSK, etc.) for use with CCMP enabled
+ networks.
+
+ This can be compiled as a modules and it will be called
+ "ieee80211_crypt_ccmp".
+
+config IEEE80211_CRYPT_TKIP
+ tristate "IEEE 802.11i TKIP encryption"
+ depends on IEEE80211
+ select CRYPTO_MICHAEL_MIC
+ ---help---
+ Include software based cipher suites in support of IEEE 802.11i
+ (aka TGi, WPA, WPA2, WPA-PSK, etc.) for use with TKIP enabled
+ networks.
+
+ This can be compiled as a modules and it will be called
+ "ieee80211_crypt_tkip".
+
--- /dev/null
+obj-$(CONFIG_IEEE80211) += ieee80211.o
+obj-$(CONFIG_IEEE80211) += ieee80211_crypt.o
+obj-$(CONFIG_IEEE80211_CRYPT_WEP) += ieee80211_crypt_wep.o
+obj-$(CONFIG_IEEE80211_CRYPT_CCMP) += ieee80211_crypt_ccmp.o
+obj-$(CONFIG_IEEE80211_CRYPT_TKIP) += ieee80211_crypt_tkip.o
+ieee80211-objs := \
+ ieee80211_module.o \
+ ieee80211_tx.o \
+ ieee80211_rx.o \
+ ieee80211_wx.o
+
--- /dev/null
+/*
+ * Host AP crypto routines
+ *
+ * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Portions Copyright (C) 2004, Intel Corporation <jketreno@linux.intel.com>
+ *
+ * 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 <asm/string.h>
+#include <asm/errno.h>
+
+#include <net/ieee80211.h>
+
+MODULE_AUTHOR("Jouni Malinen");
+MODULE_DESCRIPTION("HostAP crypto");
+MODULE_LICENSE("GPL");
+
+struct ieee80211_crypto_alg {
+ struct list_head list;
+ struct ieee80211_crypto_ops *ops;
+};
+
+
+struct ieee80211_crypto {
+ struct list_head algs;
+ spinlock_t lock;
+};
+
+static struct ieee80211_crypto *hcrypt;
+
+void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
+ int force)
+{
+ struct list_head *ptr, *n;
+ struct ieee80211_crypt_data *entry;
+
+ for (ptr = ieee->crypt_deinit_list.next, n = ptr->next;
+ ptr != &ieee->crypt_deinit_list; ptr = n, n = ptr->next) {
+ entry = list_entry(ptr, struct ieee80211_crypt_data, list);
+
+ if (atomic_read(&entry->refcnt) != 0 && !force)
+ continue;
+
+ list_del(ptr);
+
+ if (entry->ops) {
+ entry->ops->deinit(entry->priv);
+ module_put(entry->ops->owner);
+ }
+ kfree(entry);
+ }
+}
+
+void ieee80211_crypt_deinit_handler(unsigned long data)
+{
+ struct ieee80211_device *ieee = (struct ieee80211_device *)data;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ieee->lock, flags);
+ ieee80211_crypt_deinit_entries(ieee, 0);
+ if (!list_empty(&ieee->crypt_deinit_list)) {
+ printk(KERN_DEBUG "%s: entries remaining in delayed crypt "
+ "deletion list\n", ieee->dev->name);
+ ieee->crypt_deinit_timer.expires = jiffies + HZ;
+ add_timer(&ieee->crypt_deinit_timer);
+ }
+ spin_unlock_irqrestore(&ieee->lock, flags);
+
+}
+
+void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
+ struct ieee80211_crypt_data **crypt)
+{
+ struct ieee80211_crypt_data *tmp;
+ unsigned long flags;
+
+ if (*crypt == NULL)
+ return;
+
+ tmp = *crypt;
+ *crypt = NULL;
+
+ /* must not run ops->deinit() while there may be pending encrypt or
+ * decrypt operations. Use a list of delayed deinits to avoid needing
+ * locking. */
+
+ spin_lock_irqsave(&ieee->lock, flags);
+ list_add(&tmp->list, &ieee->crypt_deinit_list);
+ if (!timer_pending(&ieee->crypt_deinit_timer)) {
+ ieee->crypt_deinit_timer.expires = jiffies + HZ;
+ add_timer(&ieee->crypt_deinit_timer);
+ }
+ spin_unlock_irqrestore(&ieee->lock, flags);
+}
+
+int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops)
+{
+ unsigned long flags;
+ struct ieee80211_crypto_alg *alg;
+
+ if (hcrypt == NULL)
+ return -1;
+
+ 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 "ieee80211_crypt: registered algorithm '%s'\n",
+ ops->name);
+
+ return 0;
+}
+
+int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops)
+{
+ unsigned long flags;
+ struct list_head *ptr;
+ struct ieee80211_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 ieee80211_crypto_alg *alg =
+ (struct ieee80211_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 "ieee80211_crypt: unregistered algorithm "
+ "'%s'\n", ops->name);
+ kfree(del_alg);
+ }
+
+ return del_alg ? 0 : -1;
+}
+
+
+struct ieee80211_crypto_ops * ieee80211_get_crypto_ops(const char *name)
+{
+ unsigned long flags;
+ struct list_head *ptr;
+ struct ieee80211_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 ieee80211_crypto_alg *alg =
+ (struct ieee80211_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 * ieee80211_crypt_null_init(int keyidx) { return (void *) 1; }
+static void ieee80211_crypt_null_deinit(void *priv) {}
+
+static struct ieee80211_crypto_ops ieee80211_crypt_null = {
+ .name = "NULL",
+ .init = ieee80211_crypt_null_init,
+ .deinit = ieee80211_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,
+ .owner = THIS_MODULE,
+};
+
+
+static int __init ieee80211_crypto_init(void)
+{
+ int ret = -ENOMEM;
+
+ hcrypt = kmalloc(sizeof(*hcrypt), GFP_KERNEL);
+ if (!hcrypt)
+ goto out;
+
+ memset(hcrypt, 0, sizeof(*hcrypt));
+ INIT_LIST_HEAD(&hcrypt->algs);
+ spin_lock_init(&hcrypt->lock);
+
+ ret = ieee80211_register_crypto_ops(&ieee80211_crypt_null);
+ if (ret < 0) {
+ kfree(hcrypt);
+ hcrypt = NULL;
+ }
+out:
+ return ret;
+}
+
+
+static void __exit ieee80211_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 ieee80211_crypto_alg *alg =
+ (struct ieee80211_crypto_alg *) ptr;
+ list_del(ptr);
+ printk(KERN_DEBUG "ieee80211_crypt: unregistered algorithm "
+ "'%s' (deinit)\n", alg->ops->name);
+ kfree(alg);
+ }
+
+ kfree(hcrypt);
+}
+
+EXPORT_SYMBOL(ieee80211_crypt_deinit_entries);
+EXPORT_SYMBOL(ieee80211_crypt_deinit_handler);
+EXPORT_SYMBOL(ieee80211_crypt_delayed_deinit);
+
+EXPORT_SYMBOL(ieee80211_register_crypto_ops);
+EXPORT_SYMBOL(ieee80211_unregister_crypto_ops);
+EXPORT_SYMBOL(ieee80211_get_crypto_ops);
+
+module_init(ieee80211_crypto_init);
+module_exit(ieee80211_crypto_deinit);
--- /dev/null
+/*
+ * 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 <asm/string.h>
+#include <linux/wireless.h>
+
+#include <net/ieee80211.h>
+
+
+#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 ieee80211_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 ieee80211_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 * ieee80211_ccmp_init(int key_idx)
+{
+ struct ieee80211_ccmp_data *priv;
+
+ priv = 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 "ieee80211_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);
+ }
+
+ return NULL;
+}
+
+
+static void ieee80211_ccmp_deinit(void *priv)
+{
+ struct ieee80211_ccmp_data *_priv = priv;
+ if (_priv && _priv->tfm)
+ crypto_free_tfm(_priv->tfm);
+ kfree(priv);
+}
+
+
+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 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_ctl);
+ a4_included = ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS));
+ qc_included = ((WLAN_FC_GET_TYPE(fc) == IEEE80211_FTYPE_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_ctl;
+ 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 */
+ ieee80211_ccmp_aes_encrypt(tfm, b0, auth);
+ xor_block(auth, aad, AES_BLOCK_LEN);
+ ieee80211_ccmp_aes_encrypt(tfm, auth, auth);
+ xor_block(auth, &aad[AES_BLOCK_LEN], AES_BLOCK_LEN);
+ ieee80211_ccmp_aes_encrypt(tfm, auth, auth);
+ b0[0] &= 0x07;
+ b0[14] = b0[15] = 0;
+ ieee80211_ccmp_aes_encrypt(tfm, b0, s0);
+}
+
+
+static int ieee80211_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+ struct ieee80211_ccmp_data *key = priv;
+ int data_len, i, blocks, last, len;
+ u8 *pos, *mic;
+ struct 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 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);
+ ieee80211_ccmp_aes_encrypt(key->tfm, b, b);
+ /* Encryption, with counter */
+ b0[14] = (i >> 8) & 0xff;
+ b0[15] = i & 0xff;
+ ieee80211_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 ieee80211_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+ struct ieee80211_ccmp_data *key = priv;
+ u8 keyidx, *pos;
+ struct 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 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 " MAC_FMT "\n", MAC_ARG(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 " MAC_FMT
+ " with keyid=%d that does not have a configured"
+ " key\n", MAC_ARG(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=" MAC_FMT
+ " previous PN %02x%02x%02x%02x%02x%02x "
+ "received PN %02x%02x%02x%02x%02x%02x\n",
+ MAC_ARG(hdr->addr2), MAC_ARG(key->rx_pn),
+ MAC_ARG(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;
+ ieee80211_ccmp_aes_encrypt(key->tfm, b0, b);
+ xor_block(pos, b, len);
+ /* Authentication */
+ xor_block(a, pos, len);
+ ieee80211_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="
+ MAC_FMT "\n", MAC_ARG(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 ieee80211_ccmp_set_key(void *key, int len, u8 *seq, void *priv)
+{
+ struct ieee80211_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 ieee80211_ccmp_get_key(void *key, int len, u8 *seq, void *priv)
+{
+ struct ieee80211_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 * ieee80211_ccmp_print_stats(char *p, void *priv)
+{
+ struct ieee80211_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,
+ MAC_ARG(ccmp->tx_pn), MAC_ARG(ccmp->rx_pn),
+ ccmp->dot11RSNAStatsCCMPFormatErrors,
+ ccmp->dot11RSNAStatsCCMPReplays,
+ ccmp->dot11RSNAStatsCCMPDecryptErrors);
+
+ return p;
+}
+
+
+static struct ieee80211_crypto_ops ieee80211_crypt_ccmp = {
+ .name = "CCMP",
+ .init = ieee80211_ccmp_init,
+ .deinit = ieee80211_ccmp_deinit,
+ .encrypt_mpdu = ieee80211_ccmp_encrypt,
+ .decrypt_mpdu = ieee80211_ccmp_decrypt,
+ .encrypt_msdu = NULL,
+ .decrypt_msdu = NULL,
+ .set_key = ieee80211_ccmp_set_key,
+ .get_key = ieee80211_ccmp_get_key,
+ .print_stats = ieee80211_ccmp_print_stats,
+ .extra_prefix_len = CCMP_HDR_LEN,
+ .extra_postfix_len = CCMP_MIC_LEN,
+ .owner = THIS_MODULE,
+};
+
+
+static int __init ieee80211_crypto_ccmp_init(void)
+{
+ return ieee80211_register_crypto_ops(&ieee80211_crypt_ccmp);
+}
+
+
+static void __exit ieee80211_crypto_ccmp_exit(void)
+{
+ ieee80211_unregister_crypto_ops(&ieee80211_crypt_ccmp);
+}
+
+
+module_init(ieee80211_crypto_ccmp_init);
+module_exit(ieee80211_crypto_ccmp_exit);
--- /dev/null
+/*
+ * 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 <asm/string.h>
+
+#include <net/ieee80211.h>
+
+
+#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");
+
+struct ieee80211_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 * ieee80211_tkip_init(int key_idx)
+{
+ struct ieee80211_tkip_data *priv;
+
+ priv = 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 "ieee80211_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 "ieee80211_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);
+ }
+
+ return NULL;
+}
+
+
+static void ieee80211_tkip_deinit(void *priv)
+{
+ struct ieee80211_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);
+}
+
+
+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 ieee80211_tkip_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+ struct ieee80211_tkip_data *tkey = priv;
+ int len;
+ u8 rc4key[16], *pos, *icv;
+ struct 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 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 ieee80211_tkip_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
+{
+ struct ieee80211_tkip_data *tkey = priv;
+ u8 rc4key[16];
+ u8 keyidx, *pos;
+ u32 iv32;
+ u16 iv16;
+ struct ieee80211_hdr *hdr;
+ u8 icv[4];
+ u32 crc;
+ struct scatterlist sg;
+ int plen;
+
+ if (skb->len < hdr_len + 8 + 4)
+ return -1;
+
+ hdr = (struct 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 " MAC_FMT "\n", MAC_ARG(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 " MAC_FMT
+ " with keyid=%d that does not have a configured"
+ " key\n", MAC_ARG(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=" MAC_FMT
+ " previous TSC %08x%04x received TSC "
+ "%08x%04x\n", MAC_ARG(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="
+ MAC_FMT "\n", MAC_ARG(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 ieee80211_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 ieee80211_hdr *hdr11;
+
+ hdr11 = (struct ieee80211_hdr *) skb->data;
+ switch (le16_to_cpu(hdr11->frame_ctl) &
+ (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
+ case IEEE80211_FCTL_TODS:
+ memcpy(hdr, hdr11->addr3, ETH_ALEN); /* DA */
+ memcpy(hdr + ETH_ALEN, hdr11->addr2, ETH_ALEN); /* SA */
+ break;
+ case IEEE80211_FCTL_FROMDS:
+ memcpy(hdr, hdr11->addr1, ETH_ALEN); /* DA */
+ memcpy(hdr + ETH_ALEN, hdr11->addr3, ETH_ALEN); /* SA */
+ break;
+ case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_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 ieee80211_michael_mic_add(struct sk_buff *skb, int hdr_len, void *priv)
+{
+ struct ieee80211_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;
+}
+
+
+#if WIRELESS_EXT >= 18
+static void ieee80211_michael_mic_failure(struct net_device *dev,
+ struct ieee80211_hdr *hdr,
+ int keyidx)
+{
+ union iwreq_data wrqu;
+ struct iw_michaelmicfailure ev;
+
+ /* TODO: needed parameters: count, keyid, key type, TSC */
+ memset(&ev, 0, sizeof(ev));
+ ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
+ if (hdr->addr1[0] & 0x01)
+ ev.flags |= IW_MICFAILURE_GROUP;
+ else
+ ev.flags |= IW_MICFAILURE_PAIRWISE;
+ ev.src_addr.sa_family = ARPHRD_ETHER;
+ memcpy(ev.src_addr.sa_data, hdr->addr2, ETH_ALEN);
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = sizeof(ev);
+ wireless_send_event(dev, IWEVMICHAELMICFAILURE, &wrqu, (char *) &ev);
+}
+#elif WIRELESS_EXT >= 15
+static void ieee80211_michael_mic_failure(struct net_device *dev,
+ struct ieee80211_hdr *hdr,
+ int keyidx)
+{
+ union iwreq_data wrqu;
+ char buf[128];
+
+ /* TODO: needed parameters: count, keyid, key type, TSC */
+ sprintf(buf, "MLME-MICHAELMICFAILURE.indication(keyid=%d %scast addr="
+ MAC_FMT ")", keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+ MAC_ARG(hdr->addr2));
+ memset(&wrqu, 0, sizeof(wrqu));
+ wrqu.data.length = strlen(buf);
+ wireless_send_event(dev, IWEVCUSTOM, &wrqu, buf);
+}
+#else /* WIRELESS_EXT >= 15 */
+static inline void ieee80211_michael_mic_failure(struct net_device *dev,
+ struct ieee80211_hdr *hdr,
+ int keyidx)
+{
+}
+#endif /* WIRELESS_EXT >= 15 */
+
+
+static int ieee80211_michael_mic_verify(struct sk_buff *skb, int keyidx,
+ int hdr_len, void *priv)
+{
+ struct ieee80211_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 ieee80211_hdr *hdr;
+ hdr = (struct ieee80211_hdr *) skb->data;
+ printk(KERN_DEBUG "%s: Michael MIC verification failed for "
+ "MSDU from " MAC_FMT " keyidx=%d\n",
+ skb->dev ? skb->dev->name : "N/A", MAC_ARG(hdr->addr2),
+ keyidx);
+ if (skb->dev)
+ ieee80211_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 ieee80211_tkip_set_key(void *key, int len, u8 *seq, void *priv)
+{
+ struct ieee80211_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 ieee80211_tkip_get_key(void *key, int len, u8 *seq, void *priv)
+{
+ struct ieee80211_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 * ieee80211_tkip_print_stats(char *p, void *priv)
+{
+ struct ieee80211_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 ieee80211_crypto_ops ieee80211_crypt_tkip = {
+ .name = "TKIP",
+ .init = ieee80211_tkip_init,
+ .deinit = ieee80211_tkip_deinit,
+ .encrypt_mpdu = ieee80211_tkip_encrypt,
+ .decrypt_mpdu = ieee80211_tkip_decrypt,
+ .encrypt_msdu = ieee80211_michael_mic_add,
+ .decrypt_msdu = ieee80211_michael_mic_verify,
+ .set_key = ieee80211_tkip_set_key,
+ .get_key = ieee80211_tkip_get_key,
+ .print_stats = ieee80211_tkip_print_stats,
+ .extra_prefix_len = 4 + 4, /* IV + ExtIV */
+ .extra_postfix_len = 8 + 4, /* MIC + ICV */
+ .owner = THIS_MODULE,
+};
+
+
+static int __init ieee80211_crypto_tkip_init(void)
+{
+ return ieee80211_register_crypto_ops(&ieee80211_crypt_tkip);
+}
+
+
+static void __exit ieee80211_crypto_tkip_exit(void)
+{
+ ieee80211_unregister_crypto_ops(&ieee80211_crypt_tkip);
+}
+
+
+module_init(ieee80211_crypto_tkip_init);
+module_exit(ieee80211_crypto_tkip_exit);
--- /dev/null
+/*
+ * 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 <net/ieee80211.h>
+
+
+#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;
+
+ priv = 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 "ieee80211_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);
+ }
+ 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);
+}
+
+
+/* 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 ieee80211_crypto_ops ieee80211_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 */
+ .owner = THIS_MODULE,
+};
+
+
+static int __init ieee80211_crypto_wep_init(void)
+{
+ return ieee80211_register_crypto_ops(&ieee80211_crypt_wep);
+}
+
+
+static void __exit ieee80211_crypto_wep_exit(void)
+{
+ ieee80211_unregister_crypto_ops(&ieee80211_crypt_wep);
+}
+
+
+module_init(ieee80211_crypto_wep_init);
+module_exit(ieee80211_crypto_wep_exit);
--- /dev/null
+/*******************************************************************************
+
+ Copyright(c) 2004 Intel Corporation. All rights reserved.
+
+ Portions of this file are based on the WEP enablement code provided by the
+ Host AP project hostap-drivers v0.1.3
+ 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>
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc., 59
+ Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ The full GNU General Public License is included in this distribution in the
+ file called LICENSE.
+
+ Contact Information:
+ James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include <linux/compiler.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/if_arp.h>
+#include <linux/in6.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/tcp.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/wireless.h>
+#include <linux/etherdevice.h>
+#include <asm/uaccess.h>
+#include <net/arp.h>
+
+#include <net/ieee80211.h>
+
+MODULE_DESCRIPTION("802.11 data/management/control stack");
+MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
+MODULE_LICENSE("GPL");
+
+#define DRV_NAME "ieee80211"
+
+static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
+{
+ if (ieee->networks)
+ return 0;
+
+ ieee->networks = kmalloc(
+ MAX_NETWORK_COUNT * sizeof(struct ieee80211_network),
+ GFP_KERNEL);
+ if (!ieee->networks) {
+ printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
+ ieee->dev->name);
+ return -ENOMEM;
+ }
+
+ memset(ieee->networks, 0,
+ MAX_NETWORK_COUNT * sizeof(struct ieee80211_network));
+
+ return 0;
+}
+
+static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
+{
+ if (!ieee->networks)
+ return;
+ kfree(ieee->networks);
+ ieee->networks = NULL;
+}
+
+static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
+{
+ int i;
+
+ INIT_LIST_HEAD(&ieee->network_free_list);
+ INIT_LIST_HEAD(&ieee->network_list);
+ for (i = 0; i < MAX_NETWORK_COUNT; i++)
+ list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
+}
+
+
+struct net_device *alloc_ieee80211(int sizeof_priv)
+{
+ struct ieee80211_device *ieee;
+ struct net_device *dev;
+ int err;
+
+ IEEE80211_DEBUG_INFO("Initializing...\n");
+
+ dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
+ if (!dev) {
+ IEEE80211_ERROR("Unable to network device.\n");
+ goto failed;
+ }
+ ieee = netdev_priv(dev);
+ dev->hard_start_xmit = ieee80211_xmit;
+
+ ieee->dev = dev;
+
+ err = ieee80211_networks_allocate(ieee);
+ if (err) {
+ IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
+ err);
+ goto failed;
+ }
+ ieee80211_networks_initialize(ieee);
+
+ /* Default fragmentation threshold is maximum payload size */
+ ieee->fts = DEFAULT_FTS;
+ ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
+ ieee->open_wep = 1;
+
+ /* Default to enabling full open WEP with host based encrypt/decrypt */
+ ieee->host_encrypt = 1;
+ ieee->host_decrypt = 1;
+ ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
+
+ INIT_LIST_HEAD(&ieee->crypt_deinit_list);
+ init_timer(&ieee->crypt_deinit_timer);
+ ieee->crypt_deinit_timer.data = (unsigned long)ieee;
+ ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
+
+ spin_lock_init(&ieee->lock);
+
+ ieee->wpa_enabled = 0;
+ ieee->tkip_countermeasures = 0;
+ ieee->drop_unencrypted = 0;
+ ieee->privacy_invoked = 0;
+ ieee->ieee802_1x = 1;
+
+ return dev;
+
+ failed:
+ if (dev)
+ free_netdev(dev);
+ return NULL;
+}
+
+
+void free_ieee80211(struct net_device *dev)
+{
+ struct ieee80211_device *ieee = netdev_priv(dev);
+
+ int i;
+
+ del_timer_sync(&ieee->crypt_deinit_timer);
+ ieee80211_crypt_deinit_entries(ieee, 1);
+
+ for (i = 0; i < WEP_KEYS; i++) {
+ struct ieee80211_crypt_data *crypt = ieee->crypt[i];
+ if (crypt) {
+ if (crypt->ops) {
+ crypt->ops->deinit(crypt->priv);
+ module_put(crypt->ops->owner);
+ }
+ kfree(crypt);
+ ieee->crypt[i] = NULL;
+ }
+ }
+
+ ieee80211_networks_free(ieee);
+ free_netdev(dev);
+}
+
+#ifdef CONFIG_IEEE80211_DEBUG
+
+static int debug = 0;
+u32 ieee80211_debug_level = 0;
+struct proc_dir_entry *ieee80211_proc = NULL;
+
+static int show_debug_level(char *page, char **start, off_t offset,
+ int count, int *eof, void *data)
+{
+ return snprintf(page, count, "0x%08X\n", ieee80211_debug_level);
+}
+
+static int store_debug_level(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ char buf[] = "0x00000000";
+ unsigned long len = min(sizeof(buf) - 1, (u32)count);
+ char *p = (char *)buf;
+ unsigned long val;
+
+ if (copy_from_user(buf, buffer, len))
+ return count;
+ buf[len] = 0;
+ if (p[1] == 'x' || p[1] == 'X' || p[0] == 'x' || p[0] == 'X') {
+ p++;
+ if (p[0] == 'x' || p[0] == 'X')
+ p++;
+ val = simple_strtoul(p, &p, 16);
+ } else
+ val = simple_strtoul(p, &p, 10);
+ if (p == buf)
+ printk(KERN_INFO DRV_NAME
+ ": %s is not in hex or decimal form.\n", buf);
+ else
+ ieee80211_debug_level = val;
+
+ return strnlen(buf, count);
+}
+
+static int __init ieee80211_init(void)
+{
+ struct proc_dir_entry *e;
+
+ ieee80211_debug_level = debug;
+ ieee80211_proc = create_proc_entry(DRV_NAME, S_IFDIR, proc_net);
+ if (ieee80211_proc == NULL) {
+ IEEE80211_ERROR("Unable to create " DRV_NAME
+ " proc directory\n");
+ return -EIO;
+ }
+ e = create_proc_entry("debug_level", S_IFREG | S_IRUGO | S_IWUSR,
+ ieee80211_proc);
+ if (!e) {
+ remove_proc_entry(DRV_NAME, proc_net);
+ ieee80211_proc = NULL;
+ return -EIO;
+ }
+ e->read_proc = show_debug_level;
+ e->write_proc = store_debug_level;
+ e->data = NULL;
+
+ return 0;
+}
+
+static void __exit ieee80211_exit(void)
+{
+ if (ieee80211_proc) {
+ remove_proc_entry("debug_level", ieee80211_proc);
+ remove_proc_entry(DRV_NAME, proc_net);
+ ieee80211_proc = NULL;
+ }
+}
+
+#include <linux/moduleparam.h>
+module_param(debug, int, 0444);
+MODULE_PARM_DESC(debug, "debug output mask");
+
+
+module_exit(ieee80211_exit);
+module_init(ieee80211_init);
+#endif
+
+EXPORT_SYMBOL(alloc_ieee80211);
+EXPORT_SYMBOL(free_ieee80211);
--- /dev/null
+/*
+ * Original code based Host AP (software wireless LAN access point) driver
+ * for Intersil Prism2/2.5/3 - hostap.o module, common routines
+ *
+ * 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) 2004, Intel Corporation
+ *
+ * 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/compiler.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/if_arp.h>
+#include <linux/in6.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/tcp.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/wireless.h>
+#include <linux/etherdevice.h>
+#include <asm/uaccess.h>
+#include <linux/ctype.h>
+
+#include <net/ieee80211.h>
+
+static inline void ieee80211_monitor_rx(struct ieee80211_device *ieee,
+ struct sk_buff *skb,
+ struct ieee80211_rx_stats *rx_stats)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ u16 fc = le16_to_cpu(hdr->frame_ctl);
+
+ skb->dev = ieee->dev;
+ skb->mac.raw = skb->data;
+ skb_pull(skb, ieee80211_get_hdrlen(fc));
+ skb->pkt_type = PACKET_OTHERHOST;
+ skb->protocol = __constant_htons(ETH_P_80211_RAW);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ netif_rx(skb);
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static struct ieee80211_frag_entry *
+ieee80211_frag_cache_find(struct ieee80211_device *ieee, unsigned int seq,
+ unsigned int frag, u8 *src, u8 *dst)
+{
+ struct ieee80211_frag_entry *entry;
+ int i;
+
+ for (i = 0; i < IEEE80211_FRAG_CACHE_LEN; i++) {
+ entry = &ieee->frag_cache[i];
+ if (entry->skb != NULL &&
+ time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
+ IEEE80211_DEBUG_FRAG(
+ "expiring fragment cache entry "
+ "seq=%u last_frag=%u\n",
+ entry->seq, entry->last_frag);
+ dev_kfree_skb_any(entry->skb);
+ entry->skb = NULL;
+ }
+
+ if (entry->skb != NULL && entry->seq == seq &&
+ (entry->last_frag + 1 == frag || frag == -1) &&
+ memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
+ memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
+ return entry;
+ }
+
+ return NULL;
+}
+
+/* Called only as a tasklet (software IRQ) */
+static struct sk_buff *
+ieee80211_frag_cache_get(struct ieee80211_device *ieee,
+ struct ieee80211_hdr *hdr)
+{
+ struct sk_buff *skb = NULL;
+ u16 sc;
+ unsigned int frag, seq;
+ struct ieee80211_frag_entry *entry;
+
+ sc = le16_to_cpu(hdr->seq_ctl);
+ frag = WLAN_GET_SEQ_FRAG(sc);
+ seq = WLAN_GET_SEQ_SEQ(sc);
+
+ if (frag == 0) {
+ /* Reserve enough space to fit maximum frame length */
+ skb = dev_alloc_skb(ieee->dev->mtu +
+ sizeof(struct ieee80211_hdr) +
+ 8 /* LLC */ +
+ 2 /* alignment */ +
+ 8 /* WEP */ + ETH_ALEN /* WDS */);
+ if (skb == NULL)
+ return NULL;
+
+ entry = &ieee->frag_cache[ieee->frag_next_idx];
+ ieee->frag_next_idx++;
+ if (ieee->frag_next_idx >= IEEE80211_FRAG_CACHE_LEN)
+ ieee->frag_next_idx = 0;
+
+ if (entry->skb != NULL)
+ dev_kfree_skb_any(entry->skb);
+
+ entry->first_frag_time = jiffies;
+ entry->seq = seq;
+ entry->last_frag = frag;
+ entry->skb = skb;
+ memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
+ memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
+ } else {
+ /* received a fragment of a frame for which the head fragment
+ * should have already been received */
+ entry = ieee80211_frag_cache_find(ieee, seq, frag, hdr->addr2,
+ hdr->addr1);
+ if (entry != NULL) {
+ entry->last_frag = frag;
+ skb = entry->skb;
+ }
+ }
+
+ return skb;
+}
+
+
+/* Called only as a tasklet (software IRQ) */
+static int ieee80211_frag_cache_invalidate(struct ieee80211_device *ieee,
+ struct ieee80211_hdr *hdr)
+{
+ u16 sc;
+ unsigned int seq;
+ struct ieee80211_frag_entry *entry;
+
+ sc = le16_to_cpu(hdr->seq_ctl);
+ seq = WLAN_GET_SEQ_SEQ(sc);
+
+ entry = ieee80211_frag_cache_find(ieee, seq, -1, hdr->addr2,
+ hdr->addr1);
+
+ if (entry == NULL) {
+ IEEE80211_DEBUG_FRAG(
+ "could not invalidate fragment cache "
+ "entry (seq=%u)\n", seq);
+ return -1;
+ }
+
+ entry->skb = NULL;
+ return 0;
+}
+
+
+#ifdef NOT_YET
+/* ieee80211_rx_frame_mgtmt
+ *
+ * Responsible for handling management control frames
+ *
+ * Called by ieee80211_rx */
+static inline int
+ieee80211_rx_frame_mgmt(struct ieee80211_device *ieee, struct sk_buff *skb,
+ struct ieee80211_rx_stats *rx_stats, u16 type,
+ u16 stype)
+{
+ if (ieee->iw_mode == IW_MODE_MASTER) {
+ printk(KERN_DEBUG "%s: Master mode not yet suppported.\n",
+ ieee->dev->name);
+ return 0;
+/*
+ hostap_update_sta_ps(ieee, (struct hostap_ieee80211_hdr *)
+ skb->data);*/
+ }
+
+ if (ieee->hostapd && type == WLAN_FC_TYPE_MGMT) {
+ if (stype == WLAN_FC_STYPE_BEACON &&
+ ieee->iw_mode == IW_MODE_MASTER) {
+ struct sk_buff *skb2;
+ /* Process beacon frames also in kernel driver to
+ * update STA(AP) table statistics */
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2)
+ hostap_rx(skb2->dev, skb2, rx_stats);
+ }
+
+ /* send management frames to the user space daemon for
+ * processing */
+ ieee->apdevstats.rx_packets++;
+ ieee->apdevstats.rx_bytes += skb->len;
+ prism2_rx_80211(ieee->apdev, skb, rx_stats, PRISM2_RX_MGMT);
+ return 0;
+ }
+
+ if (ieee->iw_mode == IW_MODE_MASTER) {
+ if (type != WLAN_FC_TYPE_MGMT && type != WLAN_FC_TYPE_CTRL) {
+ printk(KERN_DEBUG "%s: unknown management frame "
+ "(type=0x%02x, stype=0x%02x) dropped\n",
+ skb->dev->name, type, stype);
+ return -1;
+ }
+
+ hostap_rx(skb->dev, skb, rx_stats);
+ return 0;
+ }
+
+ printk(KERN_DEBUG "%s: hostap_rx_frame_mgmt: management frame "
+ "received in non-Host AP mode\n", skb->dev->name);
+ return -1;
+}
+#endif
+
+
+/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+static unsigned char rfc1042_header[] =
+{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static unsigned char bridge_tunnel_header[] =
+{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+/* No encapsulation header if EtherType < 0x600 (=length) */
+
+/* Called by ieee80211_rx_frame_decrypt */
+static int ieee80211_is_eapol_frame(struct ieee80211_device *ieee,
+ struct sk_buff *skb)
+{
+ struct net_device *dev = ieee->dev;
+ u16 fc, ethertype;
+ struct ieee80211_hdr *hdr;
+ u8 *pos;
+
+ if (skb->len < 24)
+ return 0;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = le16_to_cpu(hdr->frame_ctl);
+
+ /* check that the frame is unicast frame to us */
+ if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ IEEE80211_FCTL_TODS &&
+ memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
+ memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
+ /* ToDS frame with own addr BSSID and DA */
+ } else if ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ IEEE80211_FCTL_FROMDS &&
+ memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
+ /* FromDS frame with own addr as DA */
+ } else
+ return 0;
+
+ if (skb->len < 24 + 8)
+ return 0;
+
+ /* check for port access entity Ethernet type */
+ pos = skb->data + 24;
+ ethertype = (pos[6] << 8) | pos[7];
+ if (ethertype == ETH_P_PAE)
+ return 1;
+
+ return 0;
+}
+
+/* Called only as a tasklet (software IRQ), by ieee80211_rx */
+static inline int
+ieee80211_rx_frame_decrypt(struct ieee80211_device* ieee, struct sk_buff *skb,
+ struct ieee80211_crypt_data *crypt)
+{
+ struct ieee80211_hdr *hdr;
+ int res, hdrlen;
+
+ if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
+ return 0;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
+
+#ifdef CONFIG_IEEE80211_CRYPT_TKIP
+ if (ieee->tkip_countermeasures &&
+ strcmp(crypt->ops->name, "TKIP") == 0) {
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
+ "received packet from " MAC_FMT "\n",
+ ieee->dev->name, MAC_ARG(hdr->addr2));
+ }
+ return -1;
+ }
+#endif
+
+ atomic_inc(&crypt->refcnt);
+ res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
+ atomic_dec(&crypt->refcnt);
+ if (res < 0) {
+ IEEE80211_DEBUG_DROP(
+ "decryption failed (SA=" MAC_FMT
+ ") res=%d\n", MAC_ARG(hdr->addr2), res);
+ if (res == -2)
+ IEEE80211_DEBUG_DROP("Decryption failed ICV "
+ "mismatch (key %d)\n",
+ skb->data[hdrlen + 3] >> 6);
+ ieee->ieee_stats.rx_discards_undecryptable++;
+ return -1;
+ }
+
+ return res;
+}
+
+
+/* Called only as a tasklet (software IRQ), by ieee80211_rx */
+static inline int
+ieee80211_rx_frame_decrypt_msdu(struct ieee80211_device* ieee, struct sk_buff *skb,
+ int keyidx, struct ieee80211_crypt_data *crypt)
+{
+ struct ieee80211_hdr *hdr;
+ int res, hdrlen;
+
+ if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
+ return 0;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
+
+ atomic_inc(&crypt->refcnt);
+ res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv);
+ atomic_dec(&crypt->refcnt);
+ if (res < 0) {
+ printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
+ " (SA=" MAC_FMT " keyidx=%d)\n",
+ ieee->dev->name, MAC_ARG(hdr->addr2), keyidx);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/* All received frames are sent to this function. @skb contains the frame in
+ * IEEE 802.11 format, i.e., in the format it was sent over air.
+ * This function is called only as a tasklet (software IRQ). */
+int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
+ struct ieee80211_rx_stats *rx_stats)
+{
+ struct net_device *dev = ieee->dev;
+ struct ieee80211_hdr *hdr;
+ size_t hdrlen;
+ u16 fc, type, stype, sc;
+ struct net_device_stats *stats;
+ unsigned int frag;
+ u8 *payload;
+ u16 ethertype;
+#ifdef NOT_YET
+ struct net_device *wds = NULL;
+ struct sk_buff *skb2 = NULL;
+ struct net_device *wds = NULL;
+ int frame_authorized = 0;
+ int from_assoc_ap = 0;
+ void *sta = NULL;
+#endif
+ u8 dst[ETH_ALEN];
+ u8 src[ETH_ALEN];
+ struct ieee80211_crypt_data *crypt = NULL;
+ int keyidx = 0;
+
+ hdr = (struct ieee80211_hdr *)skb->data;
+ stats = &ieee->stats;
+
+ if (skb->len < 10) {
+ printk(KERN_INFO "%s: SKB length < 10\n",
+ dev->name);
+ goto rx_dropped;
+ }
+
+ fc = le16_to_cpu(hdr->frame_ctl);
+ type = WLAN_FC_GET_TYPE(fc);
+ stype = WLAN_FC_GET_STYPE(fc);
+ sc = le16_to_cpu(hdr->seq_ctl);
+ frag = WLAN_GET_SEQ_FRAG(sc);
+ hdrlen = ieee80211_get_hdrlen(fc);
+
+#ifdef NOT_YET
+#if WIRELESS_EXT > 15
+ /* Put this code here so that we avoid duplicating it in all
+ * Rx paths. - Jean II */
+#ifdef IW_WIRELESS_SPY /* defined in iw_handler.h */
+ /* If spy monitoring on */
+ if (iface->spy_data.spy_number > 0) {
+ struct iw_quality wstats;
+ wstats.level = rx_stats->signal;
+ wstats.noise = rx_stats->noise;
+ wstats.updated = 6; /* No qual value */
+ /* Update spy records */
+ wireless_spy_update(dev, hdr->addr2, &wstats);
+ }
+#endif /* IW_WIRELESS_SPY */
+#endif /* WIRELESS_EXT > 15 */
+ hostap_update_rx_stats(local->ap, hdr, rx_stats);
+#endif
+
+#if WIRELESS_EXT > 15
+ if (ieee->iw_mode == IW_MODE_MONITOR) {
+ ieee80211_monitor_rx(ieee, skb, rx_stats);
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+ return 1;
+ }
+#endif
+
+ if (ieee->host_decrypt) {
+ int idx = 0;
+ if (skb->len >= hdrlen + 3)
+ idx = skb->data[hdrlen + 3] >> 6;
+ crypt = ieee->crypt[idx];
+#ifdef NOT_YET
+ sta = NULL;
+
+ /* Use station specific key to override default keys if the
+ * receiver address is a unicast address ("individual RA"). If
+ * bcrx_sta_key parameter is set, station specific key is used
+ * even with broad/multicast targets (this is against IEEE
+ * 802.11, but makes it easier to use different keys with
+ * stations that do not support WEP key mapping). */
+
+ if (!(hdr->addr1[0] & 0x01) || local->bcrx_sta_key)
+ (void) hostap_handle_sta_crypto(local, hdr, &crypt,
+ &sta);
+#endif
+
+ /* allow NULL decrypt to indicate an station specific override
+ * for default encryption */
+ if (crypt && (crypt->ops == NULL ||
+ crypt->ops->decrypt_mpdu == NULL))
+ crypt = NULL;
+
+ if (!crypt && (fc & IEEE80211_FCTL_WEP)) {
+ /* This seems to be triggered by some (multicast?)
+ * frames from other than current BSS, so just drop the
+ * frames silently instead of filling system log with
+ * these reports. */
+ IEEE80211_DEBUG_DROP("Decryption failed (not set)"
+ " (SA=" MAC_FMT ")\n",
+ MAC_ARG(hdr->addr2));
+ ieee->ieee_stats.rx_discards_undecryptable++;
+ goto rx_dropped;
+ }
+ }
+
+#ifdef NOT_YET
+ if (type != WLAN_FC_TYPE_DATA) {
+ if (type == WLAN_FC_TYPE_MGMT && stype == WLAN_FC_STYPE_AUTH &&
+ fc & IEEE80211_FCTL_WEP && ieee->host_decrypt &&
+ (keyidx = hostap_rx_frame_decrypt(ieee, skb, crypt)) < 0)
+ {
+ printk(KERN_DEBUG "%s: failed to decrypt mgmt::auth "
+ "from " MAC_FMT "\n", dev->name,
+ MAC_ARG(hdr->addr2));
+ /* TODO: could inform hostapd about this so that it
+ * could send auth failure report */
+ goto rx_dropped;
+ }
+
+ if (ieee80211_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
+ goto rx_dropped;
+ else
+ goto rx_exit;
+ }
+#endif
+
+ /* Data frame - extract src/dst addresses */
+ if (skb->len < IEEE80211_DATA_HDR3_LEN)
+ goto rx_dropped;
+
+ switch (fc & (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
+ case IEEE80211_FCTL_FROMDS:
+ memcpy(dst, hdr->addr1, ETH_ALEN);
+ memcpy(src, hdr->addr3, ETH_ALEN);
+ break;
+ case IEEE80211_FCTL_TODS:
+ memcpy(dst, hdr->addr3, ETH_ALEN);
+ memcpy(src, hdr->addr2, ETH_ALEN);
+ break;
+ case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
+ if (skb->len < IEEE80211_DATA_HDR4_LEN)
+ goto rx_dropped;
+ memcpy(dst, hdr->addr3, ETH_ALEN);
+ memcpy(src, hdr->addr4, ETH_ALEN);
+ break;
+ case 0:
+ memcpy(dst, hdr->addr1, ETH_ALEN);
+ memcpy(src, hdr->addr2, ETH_ALEN);
+ break;
+ }
+
+#ifdef NOT_YET
+ if (hostap_rx_frame_wds(ieee, hdr, fc, &wds))
+ goto rx_dropped;
+ if (wds) {
+ skb->dev = dev = wds;
+ stats = hostap_get_stats(dev);
+ }
+
+ if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
+ (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == IEEE80211_FCTL_FROMDS &&
+ ieee->stadev &&
+ memcmp(hdr->addr2, ieee->assoc_ap_addr, ETH_ALEN) == 0) {
+ /* Frame from BSSID of the AP for which we are a client */
+ skb->dev = dev = ieee->stadev;
+ stats = hostap_get_stats(dev);
+ from_assoc_ap = 1;
+ }
+#endif
+
+ dev->last_rx = jiffies;
+
+#ifdef NOT_YET
+ if ((ieee->iw_mode == IW_MODE_MASTER ||
+ ieee->iw_mode == IW_MODE_REPEAT) &&
+ !from_assoc_ap) {
+ switch (hostap_handle_sta_rx(ieee, dev, skb, rx_stats,
+ wds != NULL)) {
+ case AP_RX_CONTINUE_NOT_AUTHORIZED:
+ frame_authorized = 0;
+ break;
+ case AP_RX_CONTINUE:
+ frame_authorized = 1;
+ break;
+ case AP_RX_DROP:
+ goto rx_dropped;
+ case AP_RX_EXIT:
+ goto rx_exit;
+ }
+ }
+#endif
+
+ /* Nullfunc frames may have PS-bit set, so they must be passed to
+ * hostap_handle_sta_rx() before being dropped here. */
+ if (stype != IEEE80211_STYPE_DATA &&
+ stype != IEEE80211_STYPE_DATA_CFACK &&
+ stype != IEEE80211_STYPE_DATA_CFPOLL &&
+ stype != IEEE80211_STYPE_DATA_CFACKPOLL) {
+ if (stype != IEEE80211_STYPE_NULLFUNC)
+ IEEE80211_DEBUG_DROP(
+ "RX: dropped data frame "
+ "with no data (type=0x%02x, "
+ "subtype=0x%02x, len=%d)\n",
+ type, stype, skb->len);
+ goto rx_dropped;
+ }
+
+ /* skb: hdr + (possibly fragmented, possibly encrypted) payload */
+
+ if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
+ (keyidx = ieee80211_rx_frame_decrypt(ieee, skb, crypt)) < 0)
+ goto rx_dropped;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ /* skb: hdr + (possibly fragmented) plaintext payload */
+ // PR: FIXME: hostap has additional conditions in the "if" below:
+ // ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
+ if ((frag != 0 || (fc & IEEE80211_FCTL_MOREFRAGS))) {
+ int flen;
+ struct sk_buff *frag_skb = ieee80211_frag_cache_get(ieee, hdr);
+ IEEE80211_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
+
+ if (!frag_skb) {
+ IEEE80211_DEBUG(IEEE80211_DL_RX | IEEE80211_DL_FRAG,
+ "Rx cannot get skb from fragment "
+ "cache (morefrag=%d seq=%u frag=%u)\n",
+ (fc & IEEE80211_FCTL_MOREFRAGS) != 0,
+ WLAN_GET_SEQ_SEQ(sc), frag);
+ goto rx_dropped;
+ }
+
+ flen = skb->len;
+ if (frag != 0)
+ flen -= hdrlen;
+
+ if (frag_skb->tail + flen > frag_skb->end) {
+ printk(KERN_WARNING "%s: host decrypted and "
+ "reassembled frame did not fit skb\n",
+ dev->name);
+ ieee80211_frag_cache_invalidate(ieee, hdr);
+ goto rx_dropped;
+ }
+
+ if (frag == 0) {
+ /* copy first fragment (including full headers) into
+ * beginning of the fragment cache skb */
+ memcpy(skb_put(frag_skb, flen), skb->data, flen);
+ } else {
+ /* append frame payload to the end of the fragment
+ * cache skb */
+ memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
+ flen);
+ }
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+
+ if (fc & IEEE80211_FCTL_MOREFRAGS) {
+ /* more fragments expected - leave the skb in fragment
+ * cache for now; it will be delivered to upper layers
+ * after all fragments have been received */
+ goto rx_exit;
+ }
+
+ /* this was the last fragment and the frame will be
+ * delivered, so remove skb from fragment cache */
+ skb = frag_skb;
+ hdr = (struct ieee80211_hdr *) skb->data;
+ ieee80211_frag_cache_invalidate(ieee, hdr);
+ }
+
+ /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
+ * encrypted/authenticated */
+ if (ieee->host_decrypt && (fc & IEEE80211_FCTL_WEP) &&
+ ieee80211_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt))
+ goto rx_dropped;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep) {
+ if (/*ieee->ieee802_1x &&*/
+ ieee80211_is_eapol_frame(ieee, skb)) {
+#ifdef CONFIG_IEEE80211_DEBUG
+ /* pass unencrypted EAPOL frames even if encryption is
+ * configured */
+ struct eapol *eap = (struct eapol *)(skb->data +
+ 24);
+ IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
+ eap_get_type(eap->type));
+#endif
+ } else {
+ IEEE80211_DEBUG_DROP(
+ "encryption configured, but RX "
+ "frame not encrypted (SA=" MAC_FMT ")\n",
+ MAC_ARG(hdr->addr2));
+ goto rx_dropped;
+ }
+ }
+
+#ifdef CONFIG_IEEE80211_DEBUG
+ if (crypt && !(fc & IEEE80211_FCTL_WEP) &&
+ ieee80211_is_eapol_frame(ieee, skb)) {
+ struct eapol *eap = (struct eapol *)(skb->data +
+ 24);
+ IEEE80211_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
+ eap_get_type(eap->type));
+ }
+#endif
+
+ if (crypt && !(fc & IEEE80211_FCTL_WEP) && !ieee->open_wep &&
+ !ieee80211_is_eapol_frame(ieee, skb)) {
+ IEEE80211_DEBUG_DROP(
+ "dropped unencrypted RX data "
+ "frame from " MAC_FMT
+ " (drop_unencrypted=1)\n",
+ MAC_ARG(hdr->addr2));
+ goto rx_dropped;
+ }
+
+ /* skb: hdr + (possible reassembled) full plaintext payload */
+
+ payload = skb->data + hdrlen;
+ ethertype = (payload[6] << 8) | payload[7];
+
+#ifdef NOT_YET
+ /* If IEEE 802.1X is used, check whether the port is authorized to send
+ * the received frame. */
+ if (ieee->ieee802_1x && ieee->iw_mode == IW_MODE_MASTER) {
+ if (ethertype == ETH_P_PAE) {
+ printk(KERN_DEBUG "%s: RX: IEEE 802.1X frame\n",
+ dev->name);
+ if (ieee->hostapd && ieee->apdev) {
+ /* Send IEEE 802.1X frames to the user
+ * space daemon for processing */
+ prism2_rx_80211(ieee->apdev, skb, rx_stats,
+ PRISM2_RX_MGMT);
+ ieee->apdevstats.rx_packets++;
+ ieee->apdevstats.rx_bytes += skb->len;
+ goto rx_exit;
+ }
+ } else if (!frame_authorized) {
+ printk(KERN_DEBUG "%s: dropped frame from "
+ "unauthorized port (IEEE 802.1X): "
+ "ethertype=0x%04x\n",
+ dev->name, ethertype);
+ goto rx_dropped;
+ }
+ }
+#endif
+
+ /* convert hdr + possible LLC headers into Ethernet header */
+ if (skb->len - hdrlen >= 8 &&
+ ((memcmp(payload, rfc1042_header, SNAP_SIZE) == 0 &&
+ ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+ memcmp(payload, bridge_tunnel_header, SNAP_SIZE) == 0)) {
+ /* remove RFC1042 or Bridge-Tunnel encapsulation and
+ * replace EtherType */
+ skb_pull(skb, hdrlen + SNAP_SIZE);
+ memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+ memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+ } else {
+ u16 len;
+ /* Leave Ethernet header part of hdr and full payload */
+ skb_pull(skb, hdrlen);
+ len = htons(skb->len);
+ memcpy(skb_push(skb, 2), &len, 2);
+ memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+ memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+ }
+
+#ifdef NOT_YET
+ if (wds && ((fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) ==
+ IEEE80211_FCTL_TODS) &&
+ skb->len >= ETH_HLEN + ETH_ALEN) {
+ /* Non-standard frame: get addr4 from its bogus location after
+ * the payload */
+ memcpy(skb->data + ETH_ALEN,
+ skb->data + skb->len - ETH_ALEN, ETH_ALEN);
+ skb_trim(skb, skb->len - ETH_ALEN);
+ }
+#endif
+
+ stats->rx_packets++;
+ stats->rx_bytes += skb->len;
+
+#ifdef NOT_YET
+ if (ieee->iw_mode == IW_MODE_MASTER && !wds &&
+ ieee->ap->bridge_packets) {
+ if (dst[0] & 0x01) {
+ /* copy multicast frame both to the higher layers and
+ * to the wireless media */
+ ieee->ap->bridged_multicast++;
+ skb2 = skb_clone(skb, GFP_ATOMIC);
+ if (skb2 == NULL)
+ printk(KERN_DEBUG "%s: skb_clone failed for "
+ "multicast frame\n", dev->name);
+ } else if (hostap_is_sta_assoc(ieee->ap, dst)) {
+ /* send frame directly to the associated STA using
+ * wireless media and not passing to higher layers */
+ ieee->ap->bridged_unicast++;
+ skb2 = skb;
+ skb = NULL;
+ }
+ }
+
+ if (skb2 != NULL) {
+ /* send to wireless media */
+ skb2->protocol = __constant_htons(ETH_P_802_3);
+ skb2->mac.raw = skb2->nh.raw = skb2->data;
+ /* skb2->nh.raw = skb2->data + ETH_HLEN; */
+ skb2->dev = dev;
+ dev_queue_xmit(skb2);
+ }
+
+#endif
+
+ if (skb) {
+ skb->protocol = eth_type_trans(skb, dev);
+ memset(skb->cb, 0, sizeof(skb->cb));
+ skb->dev = dev;
+ skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
+ netif_rx(skb);
+ }
+
+ rx_exit:
+#ifdef NOT_YET
+ if (sta)
+ hostap_handle_sta_release(sta);
+#endif
+ return 1;
+
+ rx_dropped:
+ stats->rx_dropped++;
+
+ /* Returning 0 indicates to caller that we have not handled the SKB--
+ * so it is still allocated and can be used again by underlying
+ * hardware as a DMA target */
+ return 0;
+}
+
+#define MGMT_FRAME_FIXED_PART_LENGTH 0x24
+
+static inline int ieee80211_is_ofdm_rate(u8 rate)
+{
+ switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
+ case IEEE80211_OFDM_RATE_6MB:
+ case IEEE80211_OFDM_RATE_9MB:
+ case IEEE80211_OFDM_RATE_12MB:
+ case IEEE80211_OFDM_RATE_18MB:
+ case IEEE80211_OFDM_RATE_24MB:
+ case IEEE80211_OFDM_RATE_36MB:
+ case IEEE80211_OFDM_RATE_48MB:
+ case IEEE80211_OFDM_RATE_54MB:
+ return 1;
+ }
+ return 0;
+}
+
+
+static inline int ieee80211_network_init(
+ struct ieee80211_device *ieee,
+ struct ieee80211_probe_response *beacon,
+ struct ieee80211_network *network,
+ struct ieee80211_rx_stats *stats)
+{
+#ifdef CONFIG_IEEE80211_DEBUG
+ char rates_str[64];
+ char *p;
+#endif
+ struct ieee80211_info_element *info_element;
+ u16 left;
+ u8 i;
+
+ /* Pull out fixed field data */
+ memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
+ network->capability = beacon->capability;
+ network->last_scanned = jiffies;
+ network->time_stamp[0] = beacon->time_stamp[0];
+ network->time_stamp[1] = beacon->time_stamp[1];
+ network->beacon_interval = beacon->beacon_interval;
+ /* Where to pull this? beacon->listen_interval;*/
+ network->listen_interval = 0x0A;
+ network->rates_len = network->rates_ex_len = 0;
+ network->last_associate = 0;
+ network->ssid_len = 0;
+ network->flags = 0;
+ network->atim_window = 0;
+
+ if (stats->freq == IEEE80211_52GHZ_BAND) {
+ /* for A band (No DS info) */
+ network->channel = stats->received_channel;
+ } else
+ network->flags |= NETWORK_HAS_CCK;
+
+ network->wpa_ie_len = 0;
+ network->rsn_ie_len = 0;
+
+ info_element = &beacon->info_element;
+ left = stats->len - ((void *)info_element - (void *)beacon);
+ while (left >= sizeof(struct ieee80211_info_element_hdr)) {
+ if (sizeof(struct ieee80211_info_element_hdr) + info_element->len > left) {
+ IEEE80211_DEBUG_SCAN("SCAN: parse failed: info_element->len + 2 > left : info_element->len+2=%d left=%d.\n",
+ info_element->len + sizeof(struct ieee80211_info_element),
+ left);
+ return 1;
+ }
+
+ switch (info_element->id) {
+ case MFIE_TYPE_SSID:
+ if (ieee80211_is_empty_essid(info_element->data,
+ info_element->len)) {
+ network->flags |= NETWORK_EMPTY_ESSID;
+ break;
+ }
+
+ network->ssid_len = min(info_element->len,
+ (u8)IW_ESSID_MAX_SIZE);
+ memcpy(network->ssid, info_element->data, network->ssid_len);
+ if (network->ssid_len < IW_ESSID_MAX_SIZE)
+ memset(network->ssid + network->ssid_len, 0,
+ IW_ESSID_MAX_SIZE - network->ssid_len);
+
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_SSID: '%s' len=%d.\n",
+ network->ssid, network->ssid_len);
+ break;
+
+ case MFIE_TYPE_RATES:
+#ifdef CONFIG_IEEE80211_DEBUG
+ p = rates_str;
+#endif
+ network->rates_len = min(info_element->len, MAX_RATES_LENGTH);
+ for (i = 0; i < network->rates_len; i++) {
+ network->rates[i] = info_element->data[i];
+#ifdef CONFIG_IEEE80211_DEBUG
+ p += snprintf(p, sizeof(rates_str) - (p - rates_str), "%02X ", network->rates[i]);
+#endif
+ if (ieee80211_is_ofdm_rate(info_element->data[i])) {
+ network->flags |= NETWORK_HAS_OFDM;
+ if (info_element->data[i] &
+ IEEE80211_BASIC_RATE_MASK)
+ network->flags &=
+ ~NETWORK_HAS_CCK;
+ }
+ }
+
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_RATES: '%s' (%d)\n",
+ rates_str, network->rates_len);
+ break;
+
+ case MFIE_TYPE_RATES_EX:
+#ifdef CONFIG_IEEE80211_DEBUG
+ p = rates_str;
+#endif
+ network->rates_ex_len = min(info_element->len, MAX_RATES_EX_LENGTH);
+ for (i = 0; i < network->rates_ex_len; i++) {
+ network->rates_ex[i] = info_element->data[i];
+#ifdef CONFIG_IEEE80211_DEBUG
+ p += snprintf(p, sizeof(rates_str) - (p - rates_str), "%02X ", network->rates[i]);
+#endif
+ if (ieee80211_is_ofdm_rate(info_element->data[i])) {
+ network->flags |= NETWORK_HAS_OFDM;
+ if (info_element->data[i] &
+ IEEE80211_BASIC_RATE_MASK)
+ network->flags &=
+ ~NETWORK_HAS_CCK;
+ }
+ }
+
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
+ rates_str, network->rates_ex_len);
+ break;
+
+ case MFIE_TYPE_DS_SET:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_DS_SET: %d\n",
+ info_element->data[0]);
+ if (stats->freq == IEEE80211_24GHZ_BAND)
+ network->channel = info_element->data[0];
+ break;
+
+ case MFIE_TYPE_FH_SET:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_FH_SET: ignored\n");
+ break;
+
+ case MFIE_TYPE_CF_SET:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_CF_SET: ignored\n");
+ break;
+
+ case MFIE_TYPE_TIM:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_TIM: ignored\n");
+ break;
+
+ case MFIE_TYPE_IBSS_SET:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_IBSS_SET: ignored\n");
+ break;
+
+ case MFIE_TYPE_CHALLENGE:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_CHALLENGE: ignored\n");
+ break;
+
+ case MFIE_TYPE_GENERIC:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_GENERIC: %d bytes\n",
+ info_element->len);
+ if (info_element->len >= 4 &&
+ info_element->data[0] == 0x00 &&
+ info_element->data[1] == 0x50 &&
+ info_element->data[2] == 0xf2 &&
+ info_element->data[3] == 0x01) {
+ network->wpa_ie_len = min(info_element->len + 2,
+ MAX_WPA_IE_LEN);
+ memcpy(network->wpa_ie, info_element,
+ network->wpa_ie_len);
+ }
+ break;
+
+ case MFIE_TYPE_RSN:
+ IEEE80211_DEBUG_SCAN("MFIE_TYPE_RSN: %d bytes\n",
+ info_element->len);
+ network->rsn_ie_len = min(info_element->len + 2,
+ MAX_WPA_IE_LEN);
+ memcpy(network->rsn_ie, info_element,
+ network->rsn_ie_len);
+ break;
+
+ default:
+ IEEE80211_DEBUG_SCAN("unsupported IE %d\n",
+ info_element->id);
+ break;
+ }
+
+ left -= sizeof(struct ieee80211_info_element_hdr) +
+ info_element->len;
+ info_element = (struct ieee80211_info_element *)
+ &info_element->data[info_element->len];
+ }
+
+ network->mode = 0;
+ if (stats->freq == IEEE80211_52GHZ_BAND)
+ network->mode = IEEE_A;
+ else {
+ if (network->flags & NETWORK_HAS_OFDM)
+ network->mode |= IEEE_G;
+ if (network->flags & NETWORK_HAS_CCK)
+ network->mode |= IEEE_B;
+ }
+
+ if (network->mode == 0) {
+ IEEE80211_DEBUG_SCAN("Filtered out '%s (" MAC_FMT ")' "
+ "network.\n",
+ escape_essid(network->ssid,
+ network->ssid_len),
+ MAC_ARG(network->bssid));
+ return 1;
+ }
+
+ if (ieee80211_is_empty_essid(network->ssid, network->ssid_len))
+ network->flags |= NETWORK_EMPTY_ESSID;
+
+ memcpy(&network->stats, stats, sizeof(network->stats));
+
+ return 0;
+}
+
+static inline int is_same_network(struct ieee80211_network *src,
+ struct ieee80211_network *dst)
+{
+ /* A network is only a duplicate if the channel, BSSID, and ESSID
+ * all match. We treat all <hidden> with the same BSSID and channel
+ * as one network */
+ return ((src->ssid_len == dst->ssid_len) &&
+ (src->channel == dst->channel) &&
+ !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
+ !memcmp(src->ssid, dst->ssid, src->ssid_len));
+}
+
+static inline void update_network(struct ieee80211_network *dst,
+ struct ieee80211_network *src)
+{
+ memcpy(&dst->stats, &src->stats, sizeof(struct ieee80211_rx_stats));
+ dst->capability = src->capability;
+ memcpy(dst->rates, src->rates, src->rates_len);
+ dst->rates_len = src->rates_len;
+ memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
+ dst->rates_ex_len = src->rates_ex_len;
+
+ dst->mode = src->mode;
+ dst->flags = src->flags;
+ dst->time_stamp[0] = src->time_stamp[0];
+ dst->time_stamp[1] = src->time_stamp[1];
+
+ dst->beacon_interval = src->beacon_interval;
+ dst->listen_interval = src->listen_interval;
+ dst->atim_window = src->atim_window;
+
+ memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
+ dst->wpa_ie_len = src->wpa_ie_len;
+ memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
+ dst->rsn_ie_len = src->rsn_ie_len;
+
+ dst->last_scanned = jiffies;
+ /* dst->last_associate is not overwritten */
+}
+
+static inline void ieee80211_process_probe_response(
+ struct ieee80211_device *ieee,
+ struct ieee80211_probe_response *beacon,
+ struct ieee80211_rx_stats *stats)
+{
+ struct ieee80211_network network;
+ struct ieee80211_network *target;
+ struct ieee80211_network *oldest = NULL;
+#ifdef CONFIG_IEEE80211_DEBUG
+ struct ieee80211_info_element *info_element = &beacon->info_element;
+#endif
+ unsigned long flags;
+
+ IEEE80211_DEBUG_SCAN(
+ "'%s' (" MAC_FMT "): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
+ escape_essid(info_element->data, info_element->len),
+ MAC_ARG(beacon->header.addr3),
+ (beacon->capability & (1<<0xf)) ? '1' : '0',
+ (beacon->capability & (1<<0xe)) ? '1' : '0',
+ (beacon->capability & (1<<0xd)) ? '1' : '0',
+ (beacon->capability & (1<<0xc)) ? '1' : '0',
+ (beacon->capability & (1<<0xb)) ? '1' : '0',
+ (beacon->capability & (1<<0xa)) ? '1' : '0',
+ (beacon->capability & (1<<0x9)) ? '1' : '0',
+ (beacon->capability & (1<<0x8)) ? '1' : '0',
+ (beacon->capability & (1<<0x7)) ? '1' : '0',
+ (beacon->capability & (1<<0x6)) ? '1' : '0',
+ (beacon->capability & (1<<0x5)) ? '1' : '0',
+ (beacon->capability & (1<<0x4)) ? '1' : '0',
+ (beacon->capability & (1<<0x3)) ? '1' : '0',
+ (beacon->capability & (1<<0x2)) ? '1' : '0',
+ (beacon->capability & (1<<0x1)) ? '1' : '0',
+ (beacon->capability & (1<<0x0)) ? '1' : '0');
+
+ if (ieee80211_network_init(ieee, beacon, &network, stats)) {
+ IEEE80211_DEBUG_SCAN("Dropped '%s' (" MAC_FMT ") via %s.\n",
+ escape_essid(info_element->data,
+ info_element->len),
+ MAC_ARG(beacon->header.addr3),
+ WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
+ IEEE80211_STYPE_PROBE_RESP ?
+ "PROBE RESPONSE" : "BEACON");
+ return;
+ }
+
+ /* The network parsed correctly -- so now we scan our known networks
+ * to see if we can find it in our list.
+ *
+ * NOTE: This search is definitely not optimized. Once its doing
+ * the "right thing" we'll optimize it for efficiency if
+ * necessary */
+
+ /* Search for this entry in the list and update it if it is
+ * already there. */
+
+ spin_lock_irqsave(&ieee->lock, flags);
+
+ list_for_each_entry(target, &ieee->network_list, list) {
+ if (is_same_network(target, &network))
+ break;
+
+ if ((oldest == NULL) ||
+ (target->last_scanned < oldest->last_scanned))
+ oldest = target;
+ }
+
+ /* If we didn't find a match, then get a new network slot to initialize
+ * with this beacon's information */
+ if (&target->list == &ieee->network_list) {
+ if (list_empty(&ieee->network_free_list)) {
+ /* If there are no more slots, expire the oldest */
+ list_del(&oldest->list);
+ target = oldest;
+ IEEE80211_DEBUG_SCAN("Expired '%s' (" MAC_FMT ") from "
+ "network list.\n",
+ escape_essid(target->ssid,
+ target->ssid_len),
+ MAC_ARG(target->bssid));
+ } else {
+ /* Otherwise just pull from the free list */
+ target = list_entry(ieee->network_free_list.next,
+ struct ieee80211_network, list);
+ list_del(ieee->network_free_list.next);
+ }
+
+
+#ifdef CONFIG_IEEE80211_DEBUG
+ IEEE80211_DEBUG_SCAN("Adding '%s' (" MAC_FMT ") via %s.\n",
+ escape_essid(network.ssid,
+ network.ssid_len),
+ MAC_ARG(network.bssid),
+ WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
+ IEEE80211_STYPE_PROBE_RESP ?
+ "PROBE RESPONSE" : "BEACON");
+#endif
+ memcpy(target, &network, sizeof(*target));
+ list_add_tail(&target->list, &ieee->network_list);
+ } else {
+ IEEE80211_DEBUG_SCAN("Updating '%s' (" MAC_FMT ") via %s.\n",
+ escape_essid(target->ssid,
+ target->ssid_len),
+ MAC_ARG(target->bssid),
+ WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
+ IEEE80211_STYPE_PROBE_RESP ?
+ "PROBE RESPONSE" : "BEACON");
+ update_network(target, &network);
+ }
+
+ spin_unlock_irqrestore(&ieee->lock, flags);
+}
+
+void ieee80211_rx_mgt(struct ieee80211_device *ieee,
+ struct ieee80211_hdr *header,
+ struct ieee80211_rx_stats *stats)
+{
+ switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
+ case IEEE80211_STYPE_ASSOC_RESP:
+ IEEE80211_DEBUG_MGMT("received ASSOCIATION RESPONSE (%d)\n",
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ break;
+
+ case IEEE80211_STYPE_REASSOC_RESP:
+ IEEE80211_DEBUG_MGMT("received REASSOCIATION RESPONSE (%d)\n",
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ break;
+
+ case IEEE80211_STYPE_PROBE_RESP:
+ IEEE80211_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ IEEE80211_DEBUG_SCAN("Probe response\n");
+ ieee80211_process_probe_response(
+ ieee, (struct ieee80211_probe_response *)header, stats);
+ break;
+
+ case IEEE80211_STYPE_BEACON:
+ IEEE80211_DEBUG_MGMT("received BEACON (%d)\n",
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ IEEE80211_DEBUG_SCAN("Beacon\n");
+ ieee80211_process_probe_response(
+ ieee, (struct ieee80211_probe_response *)header, stats);
+ break;
+
+ default:
+ IEEE80211_DEBUG_MGMT("received UNKNOWN (%d)\n",
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ IEEE80211_WARNING("%s: Unknown management packet: %d\n",
+ ieee->dev->name,
+ WLAN_FC_GET_STYPE(header->frame_ctl));
+ break;
+ }
+}
+
+
+EXPORT_SYMBOL(ieee80211_rx_mgt);
+EXPORT_SYMBOL(ieee80211_rx);
--- /dev/null
+/******************************************************************************
+
+ Copyright(c) 2003 - 2004 Intel Corporation. All rights reserved.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc., 59
+ Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ The full GNU General Public License is included in this distribution in the
+ file called LICENSE.
+
+ Contact Information:
+ James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+******************************************************************************/
+#include <linux/compiler.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/if_arp.h>
+#include <linux/in6.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/skbuff.h>
+#include <linux/slab.h>
+#include <linux/tcp.h>
+#include <linux/types.h>
+#include <linux/version.h>
+#include <linux/wireless.h>
+#include <linux/etherdevice.h>
+#include <asm/uaccess.h>
+
+#include <net/ieee80211.h>
+
+
+/*
+
+
+802.11 Data Frame
+
+ ,-------------------------------------------------------------------.
+Bytes | 2 | 2 | 6 | 6 | 6 | 2 | 0..2312 | 4 |
+ |------|------|---------|---------|---------|------|---------|------|
+Desc. | ctrl | dura | DA/RA | TA | SA | Sequ | Frame | fcs |
+ | | tion | (BSSID) | | | ence | data | |
+ `--------------------------------------------------| |------'
+Total: 28 non-data bytes `----.----'
+ |
+ .- 'Frame data' expands to <---------------------------'
+ |
+ V
+ ,---------------------------------------------------.
+Bytes | 1 | 1 | 1 | 3 | 2 | 0-2304 |
+ |------|------|---------|----------|------|---------|
+Desc. | SNAP | SNAP | Control |Eth Tunnel| Type | IP |
+ | DSAP | SSAP | | | | Packet |
+ | 0xAA | 0xAA |0x03 (UI)|0x00-00-F8| | |
+ `-----------------------------------------| |
+Total: 8 non-data bytes `----.----'
+ |
+ .- 'IP Packet' expands, if WEP enabled, to <--'
+ |
+ V
+ ,-----------------------.
+Bytes | 4 | 0-2296 | 4 |
+ |-----|-----------|-----|
+Desc. | IV | Encrypted | ICV |
+ | | IP Packet | |
+ `-----------------------'
+Total: 8 non-data bytes
+
+
+802.3 Ethernet Data Frame
+
+ ,-----------------------------------------.
+Bytes | 6 | 6 | 2 | Variable | 4 |
+ |-------|-------|------|-----------|------|
+Desc. | Dest. | Source| Type | IP Packet | fcs |
+ | MAC | MAC | | | |
+ `-----------------------------------------'
+Total: 18 non-data bytes
+
+In the event that fragmentation is required, the incoming payload is split into
+N parts of size ieee->fts. The first fragment contains the SNAP header and the
+remaining packets are just data.
+
+If encryption is enabled, each fragment payload size is reduced by enough space
+to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
+So if you have 1500 bytes of payload with ieee->fts set to 500 without
+encryption it will take 3 frames. With WEP it will take 4 frames as the
+payload of each frame is reduced to 492 bytes.
+
+* SKB visualization
+*
+* ,- skb->data
+* |
+* | ETHERNET HEADER ,-<-- PAYLOAD
+* | | 14 bytes from skb->data
+* | 2 bytes for Type --> ,T. | (sizeof ethhdr)
+* | | | |
+* |,-Dest.--. ,--Src.---. | | |
+* | 6 bytes| | 6 bytes | | | |
+* v | | | | | |
+* 0 | v 1 | v | v 2
+* 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+* ^ | ^ | ^ |
+* | | | | | |
+* | | | | `T' <---- 2 bytes for Type
+* | | | |
+* | | '---SNAP--' <-------- 6 bytes for SNAP
+* | |
+* `-IV--' <-------------------- 4 bytes for IV (WEP)
+*
+* SNAP HEADER
+*
+*/
+
+static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
+static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
+
+static inline int ieee80211_put_snap(u8 *data, u16 h_proto)
+{
+ struct ieee80211_snap_hdr *snap;
+ u8 *oui;
+
+ snap = (struct ieee80211_snap_hdr *)data;
+ snap->dsap = 0xaa;
+ snap->ssap = 0xaa;
+ snap->ctrl = 0x03;
+
+ if (h_proto == 0x8137 || h_proto == 0x80f3)
+ oui = P802_1H_OUI;
+ else
+ oui = RFC1042_OUI;
+ snap->oui[0] = oui[0];
+ snap->oui[1] = oui[1];
+ snap->oui[2] = oui[2];
+
+ *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
+
+ return SNAP_SIZE + sizeof(u16);
+}
+
+static inline int ieee80211_encrypt_fragment(
+ struct ieee80211_device *ieee,
+ struct sk_buff *frag,
+ int hdr_len)
+{
+ struct ieee80211_crypt_data* crypt = ieee->crypt[ieee->tx_keyidx];
+ int res;
+
+#ifdef CONFIG_IEEE80211_CRYPT_TKIP
+ struct ieee80211_hdr *header;
+
+ if (ieee->tkip_countermeasures &&
+ crypt && crypt->ops && strcmp(crypt->ops->name, "TKIP") == 0) {
+ header = (struct ieee80211_hdr *) frag->data;
+ if (net_ratelimit()) {
+ printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
+ "TX packet to " MAC_FMT "\n",
+ ieee->dev->name, MAC_ARG(header->addr1));
+ }
+ return -1;
+ }
+#endif
+ /* To encrypt, frame format is:
+ * IV (4 bytes), clear payload (including SNAP), ICV (4 bytes) */
+
+ // PR: FIXME: Copied from hostap. Check fragmentation/MSDU/MPDU encryption.
+ /* Host-based IEEE 802.11 fragmentation for TX is not yet supported, so
+ * call both MSDU and MPDU encryption functions from here. */
+ atomic_inc(&crypt->refcnt);
+ res = 0;
+ if (crypt->ops->encrypt_msdu)
+ res = crypt->ops->encrypt_msdu(frag, hdr_len, crypt->priv);
+ if (res == 0 && crypt->ops->encrypt_mpdu)
+ res = crypt->ops->encrypt_mpdu(frag, hdr_len, crypt->priv);
+
+ atomic_dec(&crypt->refcnt);
+ if (res < 0) {
+ printk(KERN_INFO "%s: Encryption failed: len=%d.\n",
+ ieee->dev->name, frag->len);
+ ieee->ieee_stats.tx_discards++;
+ return -1;
+ }
+
+ return 0;
+}
+
+
+void ieee80211_txb_free(struct ieee80211_txb *txb) {
+ int i;
+ if (unlikely(!txb))
+ return;
+ for (i = 0; i < txb->nr_frags; i++)
+ if (txb->fragments[i])
+ dev_kfree_skb_any(txb->fragments[i]);
+ kfree(txb);
+}
+
+struct ieee80211_txb *ieee80211_alloc_txb(int nr_frags, int txb_size,
+ int gfp_mask)
+{
+ struct ieee80211_txb *txb;
+ int i;
+ txb = kmalloc(
+ sizeof(struct ieee80211_txb) + (sizeof(u8*) * nr_frags),
+ gfp_mask);
+ if (!txb)
+ return NULL;
+
+ memset(txb, sizeof(struct ieee80211_txb), 0);
+ txb->nr_frags = nr_frags;
+ txb->frag_size = txb_size;
+
+ for (i = 0; i < nr_frags; i++) {
+ txb->fragments[i] = dev_alloc_skb(txb_size);
+ if (unlikely(!txb->fragments[i])) {
+ i--;
+ break;
+ }
+ }
+ if (unlikely(i != nr_frags)) {
+ while (i >= 0)
+ dev_kfree_skb_any(txb->fragments[i--]);
+ kfree(txb);
+ return NULL;
+ }
+ return txb;
+}
+
+/* SKBs are added to the ieee->tx_queue. */
+int ieee80211_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ieee80211_device *ieee = netdev_priv(dev);
+ struct ieee80211_txb *txb = NULL;
+ struct ieee80211_hdr *frag_hdr;
+ int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size;
+ unsigned long flags;
+ struct net_device_stats *stats = &ieee->stats;
+ int ether_type, encrypt;
+ int bytes, fc, hdr_len;
+ struct sk_buff *skb_frag;
+ struct ieee80211_hdr header = { /* Ensure zero initialized */
+ .duration_id = 0,
+ .seq_ctl = 0
+ };
+ u8 dest[ETH_ALEN], src[ETH_ALEN];
+
+ struct ieee80211_crypt_data* crypt;
+
+ spin_lock_irqsave(&ieee->lock, flags);
+
+ /* If there is no driver handler to take the TXB, dont' bother
+ * creating it... */
+ if (!ieee->hard_start_xmit) {
+ printk(KERN_WARNING "%s: No xmit handler.\n",
+ ieee->dev->name);
+ goto success;
+ }
+
+ if (unlikely(skb->len < SNAP_SIZE + sizeof(u16))) {
+ printk(KERN_WARNING "%s: skb too small (%d).\n",
+ ieee->dev->name, skb->len);
+ goto success;
+ }
+
+ ether_type = ntohs(((struct ethhdr *)skb->data)->h_proto);
+
+ crypt = ieee->crypt[ieee->tx_keyidx];
+
+ encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) &&
+ ieee->host_encrypt && crypt && crypt->ops;
+
+ if (!encrypt && ieee->ieee802_1x &&
+ ieee->drop_unencrypted && ether_type != ETH_P_PAE) {
+ stats->tx_dropped++;
+ goto success;
+ }
+
+#ifdef CONFIG_IEEE80211_DEBUG
+ if (crypt && !encrypt && ether_type == ETH_P_PAE) {
+ struct eapol *eap = (struct eapol *)(skb->data +
+ sizeof(struct ethhdr) - SNAP_SIZE - sizeof(u16));
+ IEEE80211_DEBUG_EAP("TX: IEEE 802.11 EAPOL frame: %s\n",
+ eap_get_type(eap->type));
+ }
+#endif
+
+ /* Save source and destination addresses */
+ memcpy(&dest, skb->data, ETH_ALEN);
+ memcpy(&src, skb->data+ETH_ALEN, ETH_ALEN);
+
+ /* Advance the SKB to the start of the payload */
+ skb_pull(skb, sizeof(struct ethhdr));
+
+ /* Determine total amount of storage required for TXB packets */
+ bytes = skb->len + SNAP_SIZE + sizeof(u16);
+
+ if (encrypt)
+ fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA |
+ IEEE80211_FCTL_WEP;
+ else
+ fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
+
+ if (ieee->iw_mode == IW_MODE_INFRA) {
+ fc |= IEEE80211_FCTL_TODS;
+ /* To DS: Addr1 = BSSID, Addr2 = SA,
+ Addr3 = DA */
+ memcpy(&header.addr1, ieee->bssid, ETH_ALEN);
+ memcpy(&header.addr2, &src, ETH_ALEN);
+ memcpy(&header.addr3, &dest, ETH_ALEN);
+ } else if (ieee->iw_mode == IW_MODE_ADHOC) {
+ /* not From/To DS: Addr1 = DA, Addr2 = SA,
+ Addr3 = BSSID */
+ memcpy(&header.addr1, dest, ETH_ALEN);
+ memcpy(&header.addr2, src, ETH_ALEN);
+ memcpy(&header.addr3, ieee->bssid, ETH_ALEN);
+ }
+ header.frame_ctl = cpu_to_le16(fc);
+ hdr_len = IEEE80211_3ADDR_LEN;
+
+ /* Determine fragmentation size based on destination (multicast
+ * and broadcast are not fragmented) */
+ if (is_multicast_ether_addr(dest) ||
+ is_broadcast_ether_addr(dest))
+ frag_size = MAX_FRAG_THRESHOLD;
+ else
+ frag_size = ieee->fts;
+
+ /* Determine amount of payload per fragment. Regardless of if
+ * this stack is providing the full 802.11 header, one will
+ * eventually be affixed to this fragment -- so we must account for
+ * it when determining the amount of payload space. */
+ bytes_per_frag = frag_size - IEEE80211_3ADDR_LEN;
+ if (ieee->config &
+ (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
+ bytes_per_frag -= IEEE80211_FCS_LEN;
+
+ /* Each fragment may need to have room for encryptiong pre/postfix */
+ if (encrypt)
+ bytes_per_frag -= crypt->ops->extra_prefix_len +
+ crypt->ops->extra_postfix_len;
+
+ /* Number of fragments is the total bytes_per_frag /
+ * payload_per_fragment */
+ nr_frags = bytes / bytes_per_frag;
+ bytes_last_frag = bytes % bytes_per_frag;
+ if (bytes_last_frag)
+ nr_frags++;
+ else
+ bytes_last_frag = bytes_per_frag;
+
+ /* When we allocate the TXB we allocate enough space for the reserve
+ * and full fragment bytes (bytes_per_frag doesn't include prefix,
+ * postfix, header, FCS, etc.) */
+ txb = ieee80211_alloc_txb(nr_frags, frag_size, GFP_ATOMIC);
+ if (unlikely(!txb)) {
+ printk(KERN_WARNING "%s: Could not allocate TXB\n",
+ ieee->dev->name);
+ goto failed;
+ }
+ txb->encrypted = encrypt;
+ txb->payload_size = bytes;
+
+ for (i = 0; i < nr_frags; i++) {
+ skb_frag = txb->fragments[i];
+
+ if (encrypt)
+ skb_reserve(skb_frag, crypt->ops->extra_prefix_len);
+
+ frag_hdr = (struct ieee80211_hdr *)skb_put(skb_frag, hdr_len);
+ memcpy(frag_hdr, &header, hdr_len);
+
+ /* If this is not the last fragment, then add the MOREFRAGS
+ * bit to the frame control */
+ if (i != nr_frags - 1) {
+ frag_hdr->frame_ctl = cpu_to_le16(
+ fc | IEEE80211_FCTL_MOREFRAGS);
+ bytes = bytes_per_frag;
+ } else {
+ /* The last fragment takes the remaining length */
+ bytes = bytes_last_frag;
+ }
+
+ /* Put a SNAP header on the first fragment */
+ if (i == 0) {
+ ieee80211_put_snap(
+ skb_put(skb_frag, SNAP_SIZE + sizeof(u16)),
+ ether_type);
+ bytes -= SNAP_SIZE + sizeof(u16);
+ }
+
+ memcpy(skb_put(skb_frag, bytes), skb->data, bytes);
+
+ /* Advance the SKB... */
+ skb_pull(skb, bytes);
+
+ /* Encryption routine will move the header forward in order
+ * to insert the IV between the header and the payload */
+ if (encrypt)
+ ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len);
+ if (ieee->config &
+ (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS))
+ skb_put(skb_frag, 4);
+ }
+
+
+ success:
+ spin_unlock_irqrestore(&ieee->lock, flags);
+
+ dev_kfree_skb_any(skb);
+
+ if (txb) {
+ if ((*ieee->hard_start_xmit)(txb, dev) == 0) {
+ stats->tx_packets++;
+ stats->tx_bytes += txb->payload_size;
+ return 0;
+ }
+ ieee80211_txb_free(txb);
+ }
+
+ return 0;
+
+ failed:
+ spin_unlock_irqrestore(&ieee->lock, flags);
+ netif_stop_queue(dev);
+ stats->tx_errors++;
+ return 1;
+
+}
+
+EXPORT_SYMBOL(ieee80211_txb_free);
--- /dev/null
+/******************************************************************************
+
+ Copyright(c) 2004 Intel Corporation. All rights reserved.
+
+ Portions of this file are based on the WEP enablement code provided by the
+ Host AP project hostap-drivers v0.1.3
+ 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>
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc., 59
+ Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+ The full GNU General Public License is included in this distribution in the
+ file called LICENSE.
+
+ Contact Information:
+ James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+******************************************************************************/
+#include <linux/wireless.h>
+#include <linux/version.h>
+#include <linux/kmod.h>
+#include <linux/module.h>
+
+#include <net/ieee80211.h>
+static const char *ieee80211_modes[] = {
+ "?", "a", "b", "ab", "g", "ag", "bg", "abg"
+};
+
+#define MAX_CUSTOM_LEN 64
+static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee,
+ char *start, char *stop,
+ struct ieee80211_network *network)
+{
+ char custom[MAX_CUSTOM_LEN];
+ char *p;
+ struct iw_event iwe;
+ int i, j;
+ u8 max_rate, rate;
+
+ /* First entry *MUST* be the AP MAC address */
+ iwe.cmd = SIOCGIWAP;
+ iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwe.u.ap_addr.sa_data, network->bssid, ETH_ALEN);
+ start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN);
+
+ /* Remaining entries will be displayed in the order we provide them */
+
+ /* Add the ESSID */
+ iwe.cmd = SIOCGIWESSID;
+ iwe.u.data.flags = 1;
+ if (network->flags & NETWORK_EMPTY_ESSID) {
+ iwe.u.data.length = sizeof("<hidden>");
+ start = iwe_stream_add_point(start, stop, &iwe, "<hidden>");
+ } else {
+ iwe.u.data.length = min(network->ssid_len, (u8)32);
+ start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
+ }
+
+ /* Add the protocol name */
+ iwe.cmd = SIOCGIWNAME;
+ snprintf(iwe.u.name, IFNAMSIZ, "IEEE 802.11%s", ieee80211_modes[network->mode]);
+ start = iwe_stream_add_event(start, stop, &iwe, IW_EV_CHAR_LEN);
+
+ /* Add mode */
+ iwe.cmd = SIOCGIWMODE;
+ if (network->capability &
+ (WLAN_CAPABILITY_BSS | WLAN_CAPABILITY_IBSS)) {
+ if (network->capability & WLAN_CAPABILITY_BSS)
+ iwe.u.mode = IW_MODE_MASTER;
+ else
+ iwe.u.mode = IW_MODE_ADHOC;
+
+ start = iwe_stream_add_event(start, stop, &iwe,
+ IW_EV_UINT_LEN);
+ }
+
+ /* Add frequency/channel */
+ iwe.cmd = SIOCGIWFREQ;
+/* iwe.u.freq.m = ieee80211_frequency(network->channel, network->mode);
+ iwe.u.freq.e = 3; */
+ iwe.u.freq.m = network->channel;
+ iwe.u.freq.e = 0;
+ iwe.u.freq.i = 0;
+ start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN);
+
+ /* Add encryption capability */
+ iwe.cmd = SIOCGIWENCODE;
+ if (network->capability & WLAN_CAPABILITY_PRIVACY)
+ iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
+ else
+ iwe.u.data.flags = IW_ENCODE_DISABLED;
+ iwe.u.data.length = 0;
+ start = iwe_stream_add_point(start, stop, &iwe, network->ssid);
+
+ /* Add basic and extended rates */
+ max_rate = 0;
+ p = custom;
+ p += snprintf(p, MAX_CUSTOM_LEN - (p - custom), " Rates (Mb/s): ");
+ for (i = 0, j = 0; i < network->rates_len; ) {
+ if (j < network->rates_ex_len &&
+ ((network->rates_ex[j] & 0x7F) <
+ (network->rates[i] & 0x7F)))
+ rate = network->rates_ex[j++] & 0x7F;
+ else
+ rate = network->rates[i++] & 0x7F;
+ if (rate > max_rate)
+ max_rate = rate;
+ p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
+ "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
+ }
+ for (; j < network->rates_ex_len; j++) {
+ rate = network->rates_ex[j] & 0x7F;
+ p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
+ "%d%s ", rate >> 1, (rate & 1) ? ".5" : "");
+ if (rate > max_rate)
+ max_rate = rate;
+ }
+
+ iwe.cmd = SIOCGIWRATE;
+ iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
+ iwe.u.bitrate.value = max_rate * 500000;
+ start = iwe_stream_add_event(start, stop, &iwe,
+ IW_EV_PARAM_LEN);
+
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = p - custom;
+ if (iwe.u.data.length)
+ start = iwe_stream_add_point(start, stop, &iwe, custom);
+
+ /* Add quality statistics */
+ /* TODO: Fix these values... */
+ iwe.cmd = IWEVQUAL;
+ iwe.u.qual.qual = network->stats.signal;
+ iwe.u.qual.level = network->stats.rssi;
+ iwe.u.qual.noise = network->stats.noise;
+ iwe.u.qual.updated = network->stats.mask & IEEE80211_STATMASK_WEMASK;
+ if (!(network->stats.mask & IEEE80211_STATMASK_RSSI))
+ iwe.u.qual.updated |= IW_QUAL_LEVEL_INVALID;
+ if (!(network->stats.mask & IEEE80211_STATMASK_NOISE))
+ iwe.u.qual.updated |= IW_QUAL_NOISE_INVALID;
+ if (!(network->stats.mask & IEEE80211_STATMASK_SIGNAL))
+ iwe.u.qual.updated |= IW_QUAL_QUAL_INVALID;
+
+ start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN);
+
+ iwe.cmd = IWEVCUSTOM;
+ p = custom;
+
+ iwe.u.data.length = p - custom;
+ if (iwe.u.data.length)
+ start = iwe_stream_add_point(start, stop, &iwe, custom);
+
+ if (ieee->wpa_enabled && network->wpa_ie_len){
+ char buf[MAX_WPA_IE_LEN * 2 + 30];
+
+ u8 *p = buf;
+ p += sprintf(p, "wpa_ie=");
+ for (i = 0; i < network->wpa_ie_len; i++) {
+ p += sprintf(p, "%02x", network->wpa_ie[i]);
+ }
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = strlen(buf);
+ start = iwe_stream_add_point(start, stop, &iwe, buf);
+ }
+
+ if (ieee->wpa_enabled && network->rsn_ie_len){
+ char buf[MAX_WPA_IE_LEN * 2 + 30];
+
+ u8 *p = buf;
+ p += sprintf(p, "rsn_ie=");
+ for (i = 0; i < network->rsn_ie_len; i++) {
+ p += sprintf(p, "%02x", network->rsn_ie[i]);
+ }
+
+ memset(&iwe, 0, sizeof(iwe));
+ iwe.cmd = IWEVCUSTOM;
+ iwe.u.data.length = strlen(buf);
+ start = iwe_stream_add_point(start, stop, &iwe, buf);
+ }
+
+ /* Add EXTRA: Age to display seconds since last beacon/probe response
+ * for given network. */
+ iwe.cmd = IWEVCUSTOM;
+ p = custom;
+ p += snprintf(p, MAX_CUSTOM_LEN - (p - custom),
+ " Last beacon: %lums ago", (jiffies - network->last_scanned) / (HZ / 100));
+ iwe.u.data.length = p - custom;
+ if (iwe.u.data.length)
+ start = iwe_stream_add_point(start, stop, &iwe, custom);
+
+
+ return start;
+}
+
+int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *extra)
+{
+ struct ieee80211_network *network;
+ unsigned long flags;
+
+ char *ev = extra;
+ char *stop = ev + IW_SCAN_MAX_DATA;
+ int i = 0;
+
+ IEEE80211_DEBUG_WX("Getting scan\n");
+
+ spin_lock_irqsave(&ieee->lock, flags);
+
+ list_for_each_entry(network, &ieee->network_list, list) {
+ i++;
+ if (ieee->scan_age == 0 ||
+ time_after(network->last_scanned + ieee->scan_age, jiffies))
+ ev = ipw2100_translate_scan(ieee, ev, stop, network);
+ else
+ IEEE80211_DEBUG_SCAN(
+ "Not showing network '%s ("
+ MAC_FMT ")' due to age (%lums).\n",
+ escape_essid(network->ssid,
+ network->ssid_len),
+ MAC_ARG(network->bssid),
+ (jiffies - network->last_scanned) / (HZ / 100));
+ }
+
+ spin_unlock_irqrestore(&ieee->lock, flags);
+
+ wrqu->data.length = ev - extra;
+ wrqu->data.flags = 0;
+
+ IEEE80211_DEBUG_WX("exit: %d networks returned.\n", i);
+
+ return 0;
+}
+
+int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *keybuf)
+{
+ struct iw_point *erq = &(wrqu->encoding);
+ struct net_device *dev = ieee->dev;
+ struct ieee80211_security sec = {
+ .flags = 0
+ };
+ int i, key, key_provided, len;
+ struct ieee80211_crypt_data **crypt;
+
+ IEEE80211_DEBUG_WX("SET_ENCODE\n");
+
+ key = erq->flags & IW_ENCODE_INDEX;
+ if (key) {
+ if (key > WEP_KEYS)
+ return -EINVAL;
+ key--;
+ key_provided = 1;
+ } else {
+ key_provided = 0;
+ key = ieee->tx_keyidx;
+ }
+
+ IEEE80211_DEBUG_WX("Key: %d [%s]\n", key, key_provided ?
+ "provided" : "default");
+
+ crypt = &ieee->crypt[key];
+
+ if (erq->flags & IW_ENCODE_DISABLED) {
+ if (key_provided && *crypt) {
+ IEEE80211_DEBUG_WX("Disabling encryption on key %d.\n",
+ key);
+ ieee80211_crypt_delayed_deinit(ieee, crypt);
+ } else
+ IEEE80211_DEBUG_WX("Disabling encryption.\n");
+
+ /* Check all the keys to see if any are still configured,
+ * and if no key index was provided, de-init them all */
+ for (i = 0; i < WEP_KEYS; i++) {
+ if (ieee->crypt[i] != NULL) {
+ if (key_provided)
+ break;
+ ieee80211_crypt_delayed_deinit(
+ ieee, &ieee->crypt[i]);
+ }
+ }
+
+ if (i == WEP_KEYS) {
+ sec.enabled = 0;
+ sec.level = SEC_LEVEL_0;
+ sec.flags |= SEC_ENABLED | SEC_LEVEL;
+ }
+
+ goto done;
+ }
+
+
+
+ sec.enabled = 1;
+ sec.flags |= SEC_ENABLED;
+
+ if (*crypt != NULL && (*crypt)->ops != NULL &&
+ strcmp((*crypt)->ops->name, "WEP") != 0) {
+ /* changing to use WEP; deinit previously used algorithm
+ * on this key */
+ ieee80211_crypt_delayed_deinit(ieee, crypt);
+ }
+
+ if (*crypt == NULL) {
+ struct ieee80211_crypt_data *new_crypt;
+
+ /* take WEP into use */
+ new_crypt = kmalloc(sizeof(struct ieee80211_crypt_data),
+ GFP_KERNEL);
+ if (new_crypt == NULL)
+ return -ENOMEM;
+ memset(new_crypt, 0, sizeof(struct ieee80211_crypt_data));
+ new_crypt->ops = ieee80211_get_crypto_ops("WEP");
+ if (!new_crypt->ops) {
+ request_module("ieee80211_crypt_wep");
+ new_crypt->ops = ieee80211_get_crypto_ops("WEP");
+ }
+
+ if (new_crypt->ops && try_module_get(new_crypt->ops->owner))
+ new_crypt->priv = new_crypt->ops->init(key);
+
+ if (!new_crypt->ops || !new_crypt->priv) {
+ kfree(new_crypt);
+ new_crypt = NULL;
+
+ printk(KERN_WARNING "%s: could not initialize WEP: "
+ "load module ieee80211_crypt_wep\n",
+ dev->name);
+ return -EOPNOTSUPP;
+ }
+ *crypt = new_crypt;
+ }
+
+ /* If a new key was provided, set it up */
+ if (erq->length > 0) {
+ len = erq->length <= 5 ? 5 : 13;
+ memcpy(sec.keys[key], keybuf, erq->length);
+ if (len > erq->length)
+ memset(sec.keys[key] + erq->length, 0,
+ len - erq->length);
+ IEEE80211_DEBUG_WX("Setting key %d to '%s' (%d:%d bytes)\n",
+ key, escape_essid(sec.keys[key], len),
+ erq->length, len);
+ sec.key_sizes[key] = len;
+ (*crypt)->ops->set_key(sec.keys[key], len, NULL,
+ (*crypt)->priv);
+ sec.flags |= (1 << key);
+ /* This ensures a key will be activated if no key is
+ * explicitely set */
+ if (key == sec.active_key)
+ sec.flags |= SEC_ACTIVE_KEY;
+ } else {
+ len = (*crypt)->ops->get_key(sec.keys[key], WEP_KEY_LEN,
+ NULL, (*crypt)->priv);
+ if (len == 0) {
+ /* Set a default key of all 0 */
+ IEEE80211_DEBUG_WX("Setting key %d to all zero.\n",
+ key);
+ memset(sec.keys[key], 0, 13);
+ (*crypt)->ops->set_key(sec.keys[key], 13, NULL,
+ (*crypt)->priv);
+ sec.key_sizes[key] = 13;
+ sec.flags |= (1 << key);
+ }
+
+ /* No key data - just set the default TX key index */
+ if (key_provided) {
+ IEEE80211_DEBUG_WX(
+ "Setting key %d to default Tx key.\n", key);
+ ieee->tx_keyidx = key;
+ sec.active_key = key;
+ sec.flags |= SEC_ACTIVE_KEY;
+ }
+ }
+
+ done:
+ ieee->open_wep = !(erq->flags & IW_ENCODE_RESTRICTED);
+ sec.auth_mode = ieee->open_wep ? WLAN_AUTH_OPEN : WLAN_AUTH_SHARED_KEY;
+ sec.flags |= SEC_AUTH_MODE;
+ IEEE80211_DEBUG_WX("Auth: %s\n", sec.auth_mode == WLAN_AUTH_OPEN ?
+ "OPEN" : "SHARED KEY");
+
+ /* For now we just support WEP, so only set that security level...
+ * TODO: When WPA is added this is one place that needs to change */
+ sec.flags |= SEC_LEVEL;
+ sec.level = SEC_LEVEL_1; /* 40 and 104 bit WEP */
+
+ if (ieee->set_security)
+ ieee->set_security(dev, &sec);
+
+ /* Do not reset port if card is in Managed mode since resetting will
+ * generate new IEEE 802.11 authentication which may end up in looping
+ * with IEEE 802.1X. If your hardware requires a reset after WEP
+ * configuration (for example... Prism2), implement the reset_port in
+ * the callbacks structures used to initialize the 802.11 stack. */
+ if (ieee->reset_on_keychange &&
+ ieee->iw_mode != IW_MODE_INFRA &&
+ ieee->reset_port && ieee->reset_port(dev)) {
+ printk(KERN_DEBUG "%s: reset_port failed\n", dev->name);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
+ struct iw_request_info *info,
+ union iwreq_data *wrqu, char *keybuf)
+{
+ struct iw_point *erq = &(wrqu->encoding);
+ int len, key;
+ struct ieee80211_crypt_data *crypt;
+
+ IEEE80211_DEBUG_WX("GET_ENCODE\n");
+
+ key = erq->flags & IW_ENCODE_INDEX;
+ if (key) {
+ if (key > WEP_KEYS)
+ return -EINVAL;
+ key--;
+ } else
+ key = ieee->tx_keyidx;
+
+ crypt = ieee->crypt[key];
+ erq->flags = key + 1;
+
+ if (crypt == NULL || crypt->ops == NULL) {
+ erq->length = 0;
+ erq->flags |= IW_ENCODE_DISABLED;
+ return 0;
+ }
+
+ if (strcmp(crypt->ops->name, "WEP") != 0) {
+ /* only WEP is supported with wireless extensions, so just
+ * report that encryption is used */
+ erq->length = 0;
+ erq->flags |= IW_ENCODE_ENABLED;
+ return 0;
+ }
+
+ len = crypt->ops->get_key(keybuf, WEP_KEY_LEN, NULL, crypt->priv);
+ erq->length = (len >= 0 ? len : 0);
+
+ erq->flags |= IW_ENCODE_ENABLED;
+
+ if (ieee->open_wep)
+ erq->flags |= IW_ENCODE_OPEN;
+ else
+ erq->flags |= IW_ENCODE_RESTRICTED;
+
+ return 0;
+}
+
+EXPORT_SYMBOL(ieee80211_wx_get_scan);
+EXPORT_SYMBOL(ieee80211_wx_set_encode);
+EXPORT_SYMBOL(ieee80211_wx_get_encode);
projects / linux-2.6 / commitdiff