[NET] ieee80211 subsystem

Contributors:
Host AP contributors
James Ketrenos <jketreno@linux.intel.com>
Francois Romieu <romieu@fr.zoreil.com>
Adrian Bunk <bunk@stusta.de>
Matthew Galgoci <mgalgoci@parcelfarce.linux.th
eplanet.co.uk>

1 files changed, 887 insertions, 0 deletions

diff --git a/include/net/ieee80211.h b/include/net/ieee80211.h
new file mode 100644
index 000000000000..b1bfaf1084f4
--- /dev/null
+++ b/include/net/ieee80211.h
@@ -0,0 +1,887 @@
+/*
+ * 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 */