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linux/include/net/ieee80211.h
John W. Linville 274bfb8dc5 lib80211: absorb crypto bits from net/ieee80211 
These bits are shared already between ipw2x00 and hostap, and could
probably be shared both more cleanly and with other drivers.  This
commit simply relocates the code to lib80211 and adjusts the drivers
appropriately.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-11-21 11:08:17 -05:00

1186 lines
34 KiB
C
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/*
* 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
* <j@w1.fi>
* Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
*
* Adaption to a generic IEEE 802.11 stack by James Ketrenos
* <jketreno@linux.intel.com>
* Copyright (c) 2004-2005, 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.
*
* API Version History
* 1.0.x -- Initial version
* 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
* various structure changes, and crypto API init method
*/
#ifndef IEEE80211_H
#define IEEE80211_H
#include <linux/if_ether.h> /* ETH_ALEN */
#include <linux/kernel.h> /* ARRAY_SIZE */
#include <linux/wireless.h>
#include <linux/ieee80211.h>
#include <net/lib80211.h>
#define IEEE80211_VERSION "git-1.1.13"
#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_1ADDR_LEN 10
#define IEEE80211_2ADDR_LEN 16
#define IEEE80211_3ADDR_LEN 24
#define IEEE80211_4ADDR_LEN 30
#define IEEE80211_FCS_LEN 4
#define IEEE80211_HLEN (IEEE80211_4ADDR_LEN)
#define IEEE80211_FRAME_LEN (IEEE80211_DATA_LEN + IEEE80211_HLEN)
#define MIN_FRAG_THRESHOLD 256U
#define MAX_FRAG_THRESHOLD 2346U
/* Frame control field constants */
#define IEEE80211_FCTL_VERS 0x0003
#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_PROTECTED 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
#define IEEE80211_STYPE_ACTION 0x00D0
/* 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_STYPE_QOS_DATA 0x0080
#define IEEE80211_SCTL_FRAG 0x000F
#define IEEE80211_SCTL_SEQ 0xFFF0
/* QOS control */
#define IEEE80211_QCTL_TID 0x000F
/* 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', __func__ , ## args); } while (0)
static inline bool ieee80211_ratelimit_debug(u32 level)
{
return (ieee80211_debug_level & level) && net_ratelimit();
}
#else
#define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
static inline bool ieee80211_ratelimit_debug(u32 level)
{
return false;
}
#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/ieee80211/debug_level
*
* you simply need to add your entry to the ieee80211_debug_level array.
*
* If you do not see debug_level in /proc/net/ieee80211 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_DROP (1<<7)
#define IEEE80211_DL_TX (1<<8)
#define IEEE80211_DL_RX (1<<9)
#define IEEE80211_DL_QOS (1<<31)
#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_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)
#define IEEE80211_DEBUG_QOS(f, a...) IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
#include <linux/netdevice.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 */
#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_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
#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) >> 4)
/* Action categories - 802.11h */
enum ieee80211_actioncategories {
WLAN_ACTION_SPECTRUM_MGMT = 0,
/* Reserved 1-127 */
/* Error 128-255 */
};
/* Action details - 802.11h */
enum ieee80211_actiondetails {
WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
/* 5 - 255 Reserved */
};
#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.
* For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
*/
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;
u64 tsf;
u32 beacon_time;
};
/* 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;
#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_ENCRYPT (1<<9)
#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 SEC_ALG_NONE 0
#define SEC_ALG_WEP 1
#define SEC_ALG_TKIP 2
#define SEC_ALG_CCMP 3
#define WEP_KEYS 4
#define WEP_KEY_LEN 13
#define SCM_KEY_LEN 32
#define SCM_TEMPORAL_KEY_LENGTH 16
struct ieee80211_security {
u16 active_key:2,
enabled:1,
auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
u8 encode_alg[WEP_KEYS];
u8 key_sizes[WEP_KEYS];
u8 keys[WEP_KEYS][SCM_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
*/
#define BEACON_PROBE_SSID_ID_POSITION 12
/* Management Frame Information Element Types */
enum ieee80211_mfie {
MFIE_TYPE_SSID = 0,
MFIE_TYPE_RATES = 1,
MFIE_TYPE_FH_SET = 2,
MFIE_TYPE_DS_SET = 3,
MFIE_TYPE_CF_SET = 4,
MFIE_TYPE_TIM = 5,
MFIE_TYPE_IBSS_SET = 6,
MFIE_TYPE_COUNTRY = 7,
MFIE_TYPE_HOP_PARAMS = 8,
MFIE_TYPE_HOP_TABLE = 9,
MFIE_TYPE_REQUEST = 10,
MFIE_TYPE_CHALLENGE = 16,
MFIE_TYPE_POWER_CONSTRAINT = 32,
MFIE_TYPE_POWER_CAPABILITY = 33,
MFIE_TYPE_TPC_REQUEST = 34,
MFIE_TYPE_TPC_REPORT = 35,
MFIE_TYPE_SUPP_CHANNELS = 36,
MFIE_TYPE_CSA = 37,
MFIE_TYPE_MEASURE_REQUEST = 38,
MFIE_TYPE_MEASURE_REPORT = 39,
MFIE_TYPE_QUIET = 40,
MFIE_TYPE_IBSS_DFS = 41,
MFIE_TYPE_ERP_INFO = 42,
MFIE_TYPE_RSN = 48,
MFIE_TYPE_RATES_EX = 50,
MFIE_TYPE_GENERIC = 221,
MFIE_TYPE_QOS_PARAMETER = 222,
};
struct ieee80211_hdr_1addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 payload[0];
} __attribute__ ((packed));
struct ieee80211_hdr_2addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 payload[0];
} __attribute__ ((packed));
struct ieee80211_hdr_3addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
__le16 seq_ctl;
u8 payload[0];
} __attribute__ ((packed));
struct ieee80211_hdr_4addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
__le16 seq_ctl;
u8 addr4[ETH_ALEN];
u8 payload[0];
} __attribute__ ((packed));
struct ieee80211_hdr_3addrqos {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
__le16 seq_ctl;
u8 payload[0];
__le16 qos_ctl;
} __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_auth {
struct ieee80211_hdr_3addr header;
__le16 algorithm;
__le16 transaction;
__le16 status;
/* challenge */
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
struct ieee80211_channel_switch {
u8 id;
u8 len;
u8 mode;
u8 channel;
u8 count;
} __attribute__ ((packed));
struct ieee80211_action {
struct ieee80211_hdr_3addr header;
u8 category;
u8 action;
union {
struct ieee80211_action_exchange {
u8 token;
struct ieee80211_info_element info_element[0];
} exchange;
struct ieee80211_channel_switch channel_switch;
} format;
} __attribute__ ((packed));
struct ieee80211_disassoc {
struct ieee80211_hdr_3addr header;
__le16 reason;
} __attribute__ ((packed));
/* Alias deauth for disassoc */
#define ieee80211_deauth ieee80211_disassoc
struct ieee80211_probe_request {
struct ieee80211_hdr_3addr header;
/* SSID, supported rates */
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
struct ieee80211_probe_response {
struct ieee80211_hdr_3addr header;
__le32 time_stamp[2];
__le16 beacon_interval;
__le16 capability;
/* SSID, supported rates, FH params, DS params,
* CF params, IBSS params, TIM (if beacon), RSN */
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
/* Alias beacon for probe_response */
#define ieee80211_beacon ieee80211_probe_response
struct ieee80211_assoc_request {
struct ieee80211_hdr_3addr header;
__le16 capability;
__le16 listen_interval;
/* SSID, supported rates, RSN */
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
struct ieee80211_reassoc_request {
struct ieee80211_hdr_3addr header;
__le16 capability;
__le16 listen_interval;
u8 current_ap[ETH_ALEN];
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
struct ieee80211_assoc_response {
struct ieee80211_hdr_3addr header;
__le16 capability;
__le16 status;
__le16 aid;
/* supported rates */
struct ieee80211_info_element info_element[0];
} __attribute__ ((packed));
struct ieee80211_txb {
u8 nr_frags;
u8 encrypted;
u8 rts_included;
u8 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_HAS_OFDM (1<<1)
#define NETWORK_HAS_CCK (1<<2)
/* QoS structure */
#define NETWORK_HAS_QOS_PARAMETERS (1<<3)
#define NETWORK_HAS_QOS_INFORMATION (1<<4)
#define NETWORK_HAS_QOS_MASK (NETWORK_HAS_QOS_PARAMETERS | \
NETWORK_HAS_QOS_INFORMATION)
/* 802.11h */
#define NETWORK_HAS_POWER_CONSTRAINT (1<<5)
#define NETWORK_HAS_CSA (1<<6)
#define NETWORK_HAS_QUIET (1<<7)
#define NETWORK_HAS_IBSS_DFS (1<<8)
#define NETWORK_HAS_TPC_REPORT (1<<9)
#define NETWORK_HAS_ERP_VALUE (1<<10)
#define QOS_QUEUE_NUM 4
#define QOS_OUI_LEN 3
#define QOS_OUI_TYPE 2
#define QOS_ELEMENT_ID 221
#define QOS_OUI_INFO_SUB_TYPE 0
#define QOS_OUI_PARAM_SUB_TYPE 1
#define QOS_VERSION_1 1
#define QOS_AIFSN_MIN_VALUE 2
struct ieee80211_qos_information_element {
u8 elementID;
u8 length;
u8 qui[QOS_OUI_LEN];
u8 qui_type;
u8 qui_subtype;
u8 version;
u8 ac_info;
} __attribute__ ((packed));
struct ieee80211_qos_ac_parameter {
u8 aci_aifsn;
u8 ecw_min_max;
__le16 tx_op_limit;
} __attribute__ ((packed));
struct ieee80211_qos_parameter_info {
struct ieee80211_qos_information_element info_element;
u8 reserved;
struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
} __attribute__ ((packed));
struct ieee80211_qos_parameters {
__le16 cw_min[QOS_QUEUE_NUM];
__le16 cw_max[QOS_QUEUE_NUM];
u8 aifs[QOS_QUEUE_NUM];
u8 flag[QOS_QUEUE_NUM];
__le16 tx_op_limit[QOS_QUEUE_NUM];
} __attribute__ ((packed));
struct ieee80211_qos_data {
struct ieee80211_qos_parameters parameters;
int active;
int supported;
u8 param_count;
u8 old_param_count;
};
struct ieee80211_tim_parameters {
u8 tim_count;
u8 tim_period;
} __attribute__ ((packed));
/*******************************************************/
enum { /* ieee80211_basic_report.map */
IEEE80211_BASIC_MAP_BSS = (1 << 0),
IEEE80211_BASIC_MAP_OFDM = (1 << 1),
IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
IEEE80211_BASIC_MAP_RADAR = (1 << 3),
IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
/* Bits 5-7 are reserved */
};
struct ieee80211_basic_report {
u8 channel;
__le64 start_time;
__le16 duration;
u8 map;
} __attribute__ ((packed));
enum { /* ieee80211_measurement_request.mode */
/* Bit 0 is reserved */
IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
IEEE80211_MEASUREMENT_REPORT = (1 << 3),
/* Bits 4-7 are reserved */
};
enum {
IEEE80211_REPORT_BASIC = 0, /* required */
IEEE80211_REPORT_CCA = 1, /* optional */
IEEE80211_REPORT_RPI = 2, /* optional */
/* 3-255 reserved */
};
struct ieee80211_measurement_params {
u8 channel;
__le64 start_time;
__le16 duration;
} __attribute__ ((packed));
struct ieee80211_measurement_request {
struct ieee80211_info_element ie;
u8 token;
u8 mode;
u8 type;
struct ieee80211_measurement_params params[0];
} __attribute__ ((packed));
struct ieee80211_measurement_report {
struct ieee80211_info_element ie;
u8 token;
u8 mode;
u8 type;
union {
struct ieee80211_basic_report basic[0];
} u;
} __attribute__ ((packed));
struct ieee80211_tpc_report {
u8 transmit_power;
u8 link_margin;
} __attribute__ ((packed));
struct ieee80211_channel_map {
u8 channel;
u8 map;
} __attribute__ ((packed));
struct ieee80211_ibss_dfs {
struct ieee80211_info_element ie;
u8 owner[ETH_ALEN];
u8 recovery_interval;
struct ieee80211_channel_map channel_map[0];
};
struct ieee80211_csa {
u8 mode;
u8 channel;
u8 count;
} __attribute__ ((packed));
struct ieee80211_quiet {
u8 count;
u8 period;
u8 duration;
u8 offset;
} __attribute__ ((packed));
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;
struct ieee80211_qos_data qos_data;
/* 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;
u32 flags;
u32 last_associate;
u32 time_stamp[2];
u16 beacon_interval;
u16 listen_interval;
u16 atim_window;
u8 erp_value;
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 ieee80211_tim_parameters tim;
/* 802.11h info */
/* Power Constraint - mandatory if spctrm mgmt required */
u8 power_constraint;
/* TPC Report - mandatory if spctrm mgmt required */
struct ieee80211_tpc_report tpc_report;
/* IBSS DFS - mandatory if spctrm mgmt required and IBSS
* NOTE: This is variable length and so must be allocated dynamically */
struct ieee80211_ibss_dfs *ibss_dfs;
/* Channel Switch Announcement - optional if spctrm mgmt required */
struct ieee80211_csa csa;
/* Quiet - optional if spctrm mgmt required */
struct ieee80211_quiet quiet;
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 CFG_IEEE80211_RESERVE_FCS (1<<0)
#define CFG_IEEE80211_COMPUTE_FCS (1<<1)
#define CFG_IEEE80211_RTS (1<<2)
#define IEEE80211_24GHZ_MIN_CHANNEL 1
#define IEEE80211_24GHZ_MAX_CHANNEL 14
#define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
IEEE80211_24GHZ_MIN_CHANNEL + 1)
#define IEEE80211_52GHZ_MIN_CHANNEL 34
#define IEEE80211_52GHZ_MAX_CHANNEL 165
#define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
IEEE80211_52GHZ_MIN_CHANNEL + 1)
enum {
IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
IEEE80211_CH_80211H_RULES = (1 << 1),
IEEE80211_CH_B_ONLY = (1 << 2),
IEEE80211_CH_NO_IBSS = (1 << 3),
IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
IEEE80211_CH_RADAR_DETECT = (1 << 5),
IEEE80211_CH_INVALID = (1 << 6),
};
struct ieee80211_channel {
u32 freq; /* in MHz */
u8 channel;
u8 flags;
u8 max_power; /* in dBm */
};
struct ieee80211_geo {
u8 name[4];
u8 bg_channels;
u8 a_channels;
struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
};
struct ieee80211_device {
struct net_device *dev;
struct ieee80211_security sec;
/* Bookkeeping structures */
struct net_device_stats stats;
struct ieee80211_stats ieee_stats;
struct ieee80211_geo geo;
/* 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_*) */
struct iw_spy_data spy_data; /* iwspy support */
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_encrypt_msdu;
int host_decrypt;
/* host performs multicast decryption */
int host_mc_decrypt;
/* host should strip IV and ICV from protected frames */
/* meaningful only when hardware decryption is being used */
int host_strip_iv_icv;
int host_open_frag;
int host_build_iv;
int ieee802_1x; /* is IEEE 802.1X used */
/* WPA data */
int wpa_enabled;
int drop_unencrypted;
int privacy_invoked;
size_t wpa_ie_len;
u8 *wpa_ie;
struct lib80211_crypt_info crypt_info;
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 */
u16 rts; /* RTS 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_true; /* ABG flag */
int perfect_rssi;
int worst_rssi;
u16 prev_seq_ctl; /* used to drop duplicate frames */
/* 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 pri);
int (*reset_port) (struct net_device * dev);
int (*is_queue_full) (struct net_device * dev, int pri);
int (*handle_management) (struct net_device * dev,
struct ieee80211_network * network, u16 type);
int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
/* Typical STA methods */
int (*handle_auth) (struct net_device * dev,
struct ieee80211_auth * auth);
int (*handle_deauth) (struct net_device * dev,
struct ieee80211_deauth * auth);
int (*handle_action) (struct net_device * dev,
struct ieee80211_action * action,
struct ieee80211_rx_stats * stats);
int (*handle_disassoc) (struct net_device * dev,
struct ieee80211_disassoc * assoc);
int (*handle_beacon) (struct net_device * dev,
struct ieee80211_beacon * beacon,
struct ieee80211_network * network);
int (*handle_probe_response) (struct net_device * dev,
struct ieee80211_probe_response * resp,
struct ieee80211_network * network);
int (*handle_probe_request) (struct net_device * dev,
struct ieee80211_probe_request * req,
struct ieee80211_rx_stats * stats);
int (*handle_assoc_response) (struct net_device * dev,
struct ieee80211_assoc_response * resp,
struct ieee80211_network * network);
/* Typical AP methods */
int (*handle_assoc_request) (struct net_device * dev);
int (*handle_reassoc_request) (struct net_device * dev,
struct ieee80211_reassoc_request * req);
/* 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)
static inline void *ieee80211_priv(struct net_device *dev)
{
return ((struct ieee80211_device *)netdev_priv(dev))->priv;
}
static 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;
}
static inline int ieee80211_get_hdrlen(u16 fc)
{
int hdrlen = IEEE80211_3ADDR_LEN;
u16 stype = WLAN_FC_GET_STYPE(fc);
switch (WLAN_FC_GET_TYPE(fc)) {
case IEEE80211_FTYPE_DATA:
if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
hdrlen = IEEE80211_4ADDR_LEN;
if (stype & IEEE80211_STYPE_QOS_DATA)
hdrlen += 2;
break;
case IEEE80211_FTYPE_CTL:
switch (WLAN_FC_GET_STYPE(fc)) {
case IEEE80211_STYPE_CTS:
case IEEE80211_STYPE_ACK:
hdrlen = IEEE80211_1ADDR_LEN;
break;
default:
hdrlen = IEEE80211_2ADDR_LEN;
break;
}
break;
}
return hdrlen;
}
static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
{
switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control))) {
case IEEE80211_1ADDR_LEN:
return ((struct ieee80211_hdr_1addr *)hdr)->payload;
case IEEE80211_2ADDR_LEN:
return ((struct ieee80211_hdr_2addr *)hdr)->payload;
case IEEE80211_3ADDR_LEN:
return ((struct ieee80211_hdr_3addr *)hdr)->payload;
case IEEE80211_4ADDR_LEN:
return ((struct ieee80211_hdr_4addr *)hdr)->payload;
}
return NULL;
}
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_is_cck_rate(u8 rate)
{
switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
case IEEE80211_CCK_RATE_1MB:
case IEEE80211_CCK_RATE_2MB:
case IEEE80211_CCK_RATE_5MB:
case IEEE80211_CCK_RATE_11MB:
return 1;
}
return 0;
}
/* 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 void ieee80211_rx_any(struct ieee80211_device *ieee,
struct sk_buff *skb, struct ieee80211_rx_stats *stats);
extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
struct ieee80211_rx_stats *rx_stats);
/* make sure to set stats->len */
extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
struct ieee80211_hdr_4addr *header,
struct ieee80211_rx_stats *stats);
extern void ieee80211_network_reset(struct ieee80211_network *network);
/* ieee80211_geo.c */
extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
*ieee);
extern int ieee80211_set_geo(struct ieee80211_device *ieee,
const struct ieee80211_geo *geo);
extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
u8 channel);
extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
u8 channel);
extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
u8 channel);
extern const struct ieee80211_channel *ieee80211_get_channel(struct
ieee80211_device
*ieee, u8 channel);
extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
u8 channel);
/* ieee80211_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 int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
{
ieee->scans++;
}
static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
{
return ieee->scans;
}
#endif /* IEEE80211_H */
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