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linux/drivers/net/wireless/ipw2x00/libipw.h
Zhu Yi 8e59340e4f libipw: split ieee->networks into small pieces 
The ieee->networks consists of 128 struct libipw_network entries. If
we allocate this chunk of memory altogether, it ends up with an
order 4 page allocation. High order page allocation is likely to fail
on system high load. This patch splits the big chunk memory allocation
into small pieces, each is 344 bytes, allocates them with 128 times.

The patch fixed bug http://bugzilla.kernel.org/show_bug.cgi?id=14989

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-03-10 16:16:55 -05:00

1092 lines
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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, libipw_geo APIs,
* various structure changes, and crypto API init method
*/
#ifndef LIBIPW_H
#define LIBIPW_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>
#include <net/cfg80211.h>
#define LIBIPW_VERSION "git-1.1.13"
#define LIBIPW_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 LIBIPW_1ADDR_LEN 10
#define LIBIPW_2ADDR_LEN 16
#define LIBIPW_3ADDR_LEN 24
#define LIBIPW_4ADDR_LEN 30
#define LIBIPW_FCS_LEN 4
#define LIBIPW_HLEN (LIBIPW_4ADDR_LEN)
#define LIBIPW_FRAME_LEN (LIBIPW_DATA_LEN + LIBIPW_HLEN)
#define MIN_FRAG_THRESHOLD 256U
#define MAX_FRAG_THRESHOLD 2346U
/* QOS control */
#define LIBIPW_QCTL_TID 0x000F
/* debug macros */
#ifdef CONFIG_LIBIPW_DEBUG
extern u32 libipw_debug_level;
#define LIBIPW_DEBUG(level, fmt, args...) \
do { if (libipw_debug_level & (level)) \
printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
in_interrupt() ? 'I' : 'U', __func__ , ## args); } while (0)
static inline bool libipw_ratelimit_debug(u32 level)
{
return (libipw_debug_level & level) && net_ratelimit();
}
#else
#define LIBIPW_DEBUG(level, fmt, args...) do {} while (0)
static inline bool libipw_ratelimit_debug(u32 level)
{
return false;
}
#endif /* CONFIG_LIBIPW_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 LIBIPW_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 LIBIPW_xxxx_DEBUG() macro definition for your
* classification, or use LIBIPW_DEBUG(LIBIPW_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 libipw_debug_level array.
*
* If you do not see debug_level in /proc/net/ieee80211 then you do not have
* CONFIG_LIBIPW_DEBUG defined in your kernel configuration
*
*/
#define LIBIPW_DL_INFO (1<<0)
#define LIBIPW_DL_WX (1<<1)
#define LIBIPW_DL_SCAN (1<<2)
#define LIBIPW_DL_STATE (1<<3)
#define LIBIPW_DL_MGMT (1<<4)
#define LIBIPW_DL_FRAG (1<<5)
#define LIBIPW_DL_DROP (1<<7)
#define LIBIPW_DL_TX (1<<8)
#define LIBIPW_DL_RX (1<<9)
#define LIBIPW_DL_QOS (1<<31)
#define LIBIPW_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
#define LIBIPW_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
#define LIBIPW_DEBUG_INFO(f, a...) LIBIPW_DEBUG(LIBIPW_DL_INFO, f, ## a)
#define LIBIPW_DEBUG_WX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_WX, f, ## a)
#define LIBIPW_DEBUG_SCAN(f, a...) LIBIPW_DEBUG(LIBIPW_DL_SCAN, f, ## a)
#define LIBIPW_DEBUG_STATE(f, a...) LIBIPW_DEBUG(LIBIPW_DL_STATE, f, ## a)
#define LIBIPW_DEBUG_MGMT(f, a...) LIBIPW_DEBUG(LIBIPW_DL_MGMT, f, ## a)
#define LIBIPW_DEBUG_FRAG(f, a...) LIBIPW_DEBUG(LIBIPW_DL_FRAG, f, ## a)
#define LIBIPW_DEBUG_DROP(f, a...) LIBIPW_DEBUG(LIBIPW_DL_DROP, f, ## a)
#define LIBIPW_DEBUG_TX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_TX, f, ## a)
#define LIBIPW_DEBUG_RX(f, a...) LIBIPW_DEBUG(LIBIPW_DL_RX, f, ## a)
#define LIBIPW_DEBUG_QOS(f, a...) LIBIPW_DEBUG(LIBIPW_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 libipw_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 libipw_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)
#define LIBIPW_STATMASK_SIGNAL (1<<0)
#define LIBIPW_STATMASK_RSSI (1<<1)
#define LIBIPW_STATMASK_NOISE (1<<2)
#define LIBIPW_STATMASK_RATE (1<<3)
#define LIBIPW_STATMASK_WEMASK 0x7
#define LIBIPW_CCK_MODULATION (1<<0)
#define LIBIPW_OFDM_MODULATION (1<<1)
#define LIBIPW_24GHZ_BAND (1<<0)
#define LIBIPW_52GHZ_BAND (1<<1)
#define LIBIPW_CCK_RATE_1MB 0x02
#define LIBIPW_CCK_RATE_2MB 0x04
#define LIBIPW_CCK_RATE_5MB 0x0B
#define LIBIPW_CCK_RATE_11MB 0x16
#define LIBIPW_OFDM_RATE_6MB 0x0C
#define LIBIPW_OFDM_RATE_9MB 0x12
#define LIBIPW_OFDM_RATE_12MB 0x18
#define LIBIPW_OFDM_RATE_18MB 0x24
#define LIBIPW_OFDM_RATE_24MB 0x30
#define LIBIPW_OFDM_RATE_36MB 0x48
#define LIBIPW_OFDM_RATE_48MB 0x60
#define LIBIPW_OFDM_RATE_54MB 0x6C
#define LIBIPW_BASIC_RATE_MASK 0x80
#define LIBIPW_CCK_RATE_1MB_MASK (1<<0)
#define LIBIPW_CCK_RATE_2MB_MASK (1<<1)
#define LIBIPW_CCK_RATE_5MB_MASK (1<<2)
#define LIBIPW_CCK_RATE_11MB_MASK (1<<3)
#define LIBIPW_OFDM_RATE_6MB_MASK (1<<4)
#define LIBIPW_OFDM_RATE_9MB_MASK (1<<5)
#define LIBIPW_OFDM_RATE_12MB_MASK (1<<6)
#define LIBIPW_OFDM_RATE_18MB_MASK (1<<7)
#define LIBIPW_OFDM_RATE_24MB_MASK (1<<8)
#define LIBIPW_OFDM_RATE_36MB_MASK (1<<9)
#define LIBIPW_OFDM_RATE_48MB_MASK (1<<10)
#define LIBIPW_OFDM_RATE_54MB_MASK (1<<11)
#define LIBIPW_CCK_RATES_MASK 0x0000000F
#define LIBIPW_CCK_BASIC_RATES_MASK (LIBIPW_CCK_RATE_1MB_MASK | \
LIBIPW_CCK_RATE_2MB_MASK)
#define LIBIPW_CCK_DEFAULT_RATES_MASK (LIBIPW_CCK_BASIC_RATES_MASK | \
LIBIPW_CCK_RATE_5MB_MASK | \
LIBIPW_CCK_RATE_11MB_MASK)
#define LIBIPW_OFDM_RATES_MASK 0x00000FF0
#define LIBIPW_OFDM_BASIC_RATES_MASK (LIBIPW_OFDM_RATE_6MB_MASK | \
LIBIPW_OFDM_RATE_12MB_MASK | \
LIBIPW_OFDM_RATE_24MB_MASK)
#define LIBIPW_OFDM_DEFAULT_RATES_MASK (LIBIPW_OFDM_BASIC_RATES_MASK | \
LIBIPW_OFDM_RATE_9MB_MASK | \
LIBIPW_OFDM_RATE_18MB_MASK | \
LIBIPW_OFDM_RATE_36MB_MASK | \
LIBIPW_OFDM_RATE_48MB_MASK | \
LIBIPW_OFDM_RATE_54MB_MASK)
#define LIBIPW_DEFAULT_RATES_MASK (LIBIPW_OFDM_DEFAULT_RATES_MASK | \
LIBIPW_CCK_DEFAULT_RATES_MASK)
#define LIBIPW_NUM_OFDM_RATES 8
#define LIBIPW_NUM_CCK_RATES 4
#define LIBIPW_OFDM_SHIFT_MASK_A 4
/* NOTE: This data is for statistical purposes; not all hardware provides this
* information for frames received.
* For libipw_rx_mgt, you need to set at least the 'len' parameter.
*/
struct libipw_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 LIBIPW_FRAG_CACHE_LEN 4
struct libipw_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 libipw_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 libipw_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 libipw_security {
u16 active_key:2, enabled:1, unicast_uses_group:1, encrypt:1;
u8 auth_mode;
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
struct libipw_hdr_1addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 payload[0];
} __attribute__ ((packed));
struct libipw_hdr_2addr {
__le16 frame_ctl;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 payload[0];
} __attribute__ ((packed));
struct libipw_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 libipw_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 libipw_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 libipw_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 libipw_auth {
struct libipw_hdr_3addr header;
__le16 algorithm;
__le16 transaction;
__le16 status;
/* challenge */
struct libipw_info_element info_element[0];
} __attribute__ ((packed));
struct libipw_channel_switch {
u8 id;
u8 len;
u8 mode;
u8 channel;
u8 count;
} __attribute__ ((packed));
struct libipw_action {
struct libipw_hdr_3addr header;
u8 category;
u8 action;
union {
struct libipw_action_exchange {
u8 token;
struct libipw_info_element info_element[0];
} exchange;
struct libipw_channel_switch channel_switch;
} format;
} __attribute__ ((packed));
struct libipw_disassoc {
struct libipw_hdr_3addr header;
__le16 reason;
} __attribute__ ((packed));
/* Alias deauth for disassoc */
#define libipw_deauth libipw_disassoc
struct libipw_probe_request {
struct libipw_hdr_3addr header;
/* SSID, supported rates */
struct libipw_info_element info_element[0];
} __attribute__ ((packed));
struct libipw_probe_response {
struct libipw_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 libipw_info_element info_element[0];
} __attribute__ ((packed));
/* Alias beacon for probe_response */
#define libipw_beacon libipw_probe_response
struct libipw_assoc_request {
struct libipw_hdr_3addr header;
__le16 capability;
__le16 listen_interval;
/* SSID, supported rates, RSN */
struct libipw_info_element info_element[0];
} __attribute__ ((packed));
struct libipw_reassoc_request {
struct libipw_hdr_3addr header;
__le16 capability;
__le16 listen_interval;
u8 current_ap[ETH_ALEN];
struct libipw_info_element info_element[0];
} __attribute__ ((packed));
struct libipw_assoc_response {
struct libipw_hdr_3addr header;
__le16 capability;
__le16 status;
__le16 aid;
/* supported rates */
struct libipw_info_element info_element[0];
} __attribute__ ((packed));
struct libipw_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 libipw_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 libipw_qos_ac_parameter {
u8 aci_aifsn;
u8 ecw_min_max;
__le16 tx_op_limit;
} __attribute__ ((packed));
struct libipw_qos_parameter_info {
struct libipw_qos_information_element info_element;
u8 reserved;
struct libipw_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
} __attribute__ ((packed));
struct libipw_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 libipw_qos_data {
struct libipw_qos_parameters parameters;
int active;
int supported;
u8 param_count;
u8 old_param_count;
};
struct libipw_tim_parameters {
u8 tim_count;
u8 tim_period;
} __attribute__ ((packed));
/*******************************************************/
enum { /* libipw_basic_report.map */
LIBIPW_BASIC_MAP_BSS = (1 << 0),
LIBIPW_BASIC_MAP_OFDM = (1 << 1),
LIBIPW_BASIC_MAP_UNIDENTIFIED = (1 << 2),
LIBIPW_BASIC_MAP_RADAR = (1 << 3),
LIBIPW_BASIC_MAP_UNMEASURED = (1 << 4),
/* Bits 5-7 are reserved */
};
struct libipw_basic_report {
u8 channel;
__le64 start_time;
__le16 duration;
u8 map;
} __attribute__ ((packed));
enum { /* libipw_measurement_request.mode */
/* Bit 0 is reserved */
LIBIPW_MEASUREMENT_ENABLE = (1 << 1),
LIBIPW_MEASUREMENT_REQUEST = (1 << 2),
LIBIPW_MEASUREMENT_REPORT = (1 << 3),
/* Bits 4-7 are reserved */
};
enum {
LIBIPW_REPORT_BASIC = 0, /* required */
LIBIPW_REPORT_CCA = 1, /* optional */
LIBIPW_REPORT_RPI = 2, /* optional */
/* 3-255 reserved */
};
struct libipw_measurement_params {
u8 channel;
__le64 start_time;
__le16 duration;
} __attribute__ ((packed));
struct libipw_measurement_request {
struct libipw_info_element ie;
u8 token;
u8 mode;
u8 type;
struct libipw_measurement_params params[0];
} __attribute__ ((packed));
struct libipw_measurement_report {
struct libipw_info_element ie;
u8 token;
u8 mode;
u8 type;
union {
struct libipw_basic_report basic[0];
} u;
} __attribute__ ((packed));
struct libipw_tpc_report {
u8 transmit_power;
u8 link_margin;
} __attribute__ ((packed));
struct libipw_channel_map {
u8 channel;
u8 map;
} __attribute__ ((packed));
struct libipw_ibss_dfs {
struct libipw_info_element ie;
u8 owner[ETH_ALEN];
u8 recovery_interval;
struct libipw_channel_map channel_map[0];
};
struct libipw_csa {
u8 mode;
u8 channel;
u8 count;
} __attribute__ ((packed));
struct libipw_quiet {
u8 count;
u8 period;
u8 duration;
u8 offset;
} __attribute__ ((packed));
struct libipw_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 libipw_qos_data qos_data;
/* These are network statistics */
struct libipw_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 libipw_tim_parameters tim;
/* 802.11h info */
/* Power Constraint - mandatory if spctrm mgmt required */
u8 power_constraint;
/* TPC Report - mandatory if spctrm mgmt required */
struct libipw_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 libipw_ibss_dfs *ibss_dfs;
/* Channel Switch Announcement - optional if spctrm mgmt required */
struct libipw_csa csa;
/* Quiet - optional if spctrm mgmt required */
struct libipw_quiet quiet;
struct list_head list;
};
enum libipw_state {
LIBIPW_UNINITIALIZED = 0,
LIBIPW_INITIALIZED,
LIBIPW_ASSOCIATING,
LIBIPW_ASSOCIATED,
LIBIPW_AUTHENTICATING,
LIBIPW_AUTHENTICATED,
LIBIPW_SHUTDOWN
};
#define DEFAULT_MAX_SCAN_AGE (15 * HZ)
#define DEFAULT_FTS 2346
#define CFG_LIBIPW_RESERVE_FCS (1<<0)
#define CFG_LIBIPW_COMPUTE_FCS (1<<1)
#define CFG_LIBIPW_RTS (1<<2)
#define LIBIPW_24GHZ_MIN_CHANNEL 1
#define LIBIPW_24GHZ_MAX_CHANNEL 14
#define LIBIPW_24GHZ_CHANNELS (LIBIPW_24GHZ_MAX_CHANNEL - \
LIBIPW_24GHZ_MIN_CHANNEL + 1)
#define LIBIPW_52GHZ_MIN_CHANNEL 34
#define LIBIPW_52GHZ_MAX_CHANNEL 165
#define LIBIPW_52GHZ_CHANNELS (LIBIPW_52GHZ_MAX_CHANNEL - \
LIBIPW_52GHZ_MIN_CHANNEL + 1)
enum {
LIBIPW_CH_PASSIVE_ONLY = (1 << 0),
LIBIPW_CH_80211H_RULES = (1 << 1),
LIBIPW_CH_B_ONLY = (1 << 2),
LIBIPW_CH_NO_IBSS = (1 << 3),
LIBIPW_CH_UNIFORM_SPREADING = (1 << 4),
LIBIPW_CH_RADAR_DETECT = (1 << 5),
LIBIPW_CH_INVALID = (1 << 6),
};
struct libipw_channel {
u32 freq; /* in MHz */
u8 channel;
u8 flags;
u8 max_power; /* in dBm */
};
struct libipw_geo {
u8 name[4];
u8 bg_channels;
u8 a_channels;
struct libipw_channel bg[LIBIPW_24GHZ_CHANNELS];
struct libipw_channel a[LIBIPW_52GHZ_CHANNELS];
};
struct libipw_device {
struct net_device *dev;
struct wireless_dev wdev;
struct libipw_security sec;
/* Bookkeeping structures */
struct libipw_stats ieee_stats;
struct libipw_geo geo;
struct ieee80211_supported_band bg_band;
struct ieee80211_supported_band a_band;
/* Probe / Beacon management */
struct list_head network_free_list;
struct list_head network_list;
struct libipw_network *networks[MAX_NETWORK_COUNT];
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 libipw_frag_entry frag_cache[LIBIPW_FRAG_CACHE_LEN];
unsigned int frag_next_idx;
u16 fts; /* Fragmentation Threshold */
u16 rts; /* RTS threshold */
/* Association info */
u8 bssid[ETH_ALEN];
enum libipw_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 libipw_security * sec);
netdev_tx_t (*hard_start_xmit) (struct libipw_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 libipw_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 libipw_auth * auth);
int (*handle_deauth) (struct net_device * dev,
struct libipw_deauth * auth);
int (*handle_action) (struct net_device * dev,
struct libipw_action * action,
struct libipw_rx_stats * stats);
int (*handle_disassoc) (struct net_device * dev,
struct libipw_disassoc * assoc);
int (*handle_beacon) (struct net_device * dev,
struct libipw_beacon * beacon,
struct libipw_network * network);
int (*handle_probe_response) (struct net_device * dev,
struct libipw_probe_response * resp,
struct libipw_network * network);
int (*handle_probe_request) (struct net_device * dev,
struct libipw_probe_request * req,
struct libipw_rx_stats * stats);
int (*handle_assoc_response) (struct net_device * dev,
struct libipw_assoc_response * resp,
struct libipw_network * network);
/* Typical AP methods */
int (*handle_assoc_request) (struct net_device * dev);
int (*handle_reassoc_request) (struct net_device * dev,
struct libipw_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 *libipw_priv(struct net_device *dev)
{
return ((struct libipw_device *)netdev_priv(dev))->priv;
}
static inline int libipw_is_valid_mode(struct libipw_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 & LIBIPW_OFDM_MODULATION) &&
(ieee->freq_band & LIBIPW_52GHZ_BAND))
return 1;
if ((mode & IEEE_G) &&
(ieee->modulation & LIBIPW_OFDM_MODULATION) &&
(ieee->freq_band & LIBIPW_24GHZ_BAND))
return 1;
if ((mode & IEEE_B) &&
(ieee->modulation & LIBIPW_CCK_MODULATION) &&
(ieee->freq_band & LIBIPW_24GHZ_BAND))
return 1;
return 0;
}
static inline int libipw_get_hdrlen(u16 fc)
{
int hdrlen = LIBIPW_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 = LIBIPW_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 = LIBIPW_1ADDR_LEN;
break;
default:
hdrlen = LIBIPW_2ADDR_LEN;
break;
}
break;
}
return hdrlen;
}
static inline u8 *libipw_get_payload(struct ieee80211_hdr *hdr)
{
switch (libipw_get_hdrlen(le16_to_cpu(hdr->frame_control))) {
case LIBIPW_1ADDR_LEN:
return ((struct libipw_hdr_1addr *)hdr)->payload;
case LIBIPW_2ADDR_LEN:
return ((struct libipw_hdr_2addr *)hdr)->payload;
case LIBIPW_3ADDR_LEN:
return ((struct libipw_hdr_3addr *)hdr)->payload;
case LIBIPW_4ADDR_LEN:
return ((struct libipw_hdr_4addr *)hdr)->payload;
}
return NULL;
}
static inline int libipw_is_ofdm_rate(u8 rate)
{
switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
case LIBIPW_OFDM_RATE_6MB:
case LIBIPW_OFDM_RATE_9MB:
case LIBIPW_OFDM_RATE_12MB:
case LIBIPW_OFDM_RATE_18MB:
case LIBIPW_OFDM_RATE_24MB:
case LIBIPW_OFDM_RATE_36MB:
case LIBIPW_OFDM_RATE_48MB:
case LIBIPW_OFDM_RATE_54MB:
return 1;
}
return 0;
}
static inline int libipw_is_cck_rate(u8 rate)
{
switch (rate & ~LIBIPW_BASIC_RATE_MASK) {
case LIBIPW_CCK_RATE_1MB:
case LIBIPW_CCK_RATE_2MB:
case LIBIPW_CCK_RATE_5MB:
case LIBIPW_CCK_RATE_11MB:
return 1;
}
return 0;
}
/* ieee80211.c */
extern void free_ieee80211(struct net_device *dev, int monitor);
extern struct net_device *alloc_ieee80211(int sizeof_priv, int monitor);
extern int libipw_change_mtu(struct net_device *dev, int new_mtu);
extern void libipw_networks_age(struct libipw_device *ieee,
unsigned long age_secs);
extern int libipw_set_encryption(struct libipw_device *ieee);
/* libipw_tx.c */
extern netdev_tx_t libipw_xmit(struct sk_buff *skb,
struct net_device *dev);
extern void libipw_txb_free(struct libipw_txb *);
/* libipw_rx.c */
extern void libipw_rx_any(struct libipw_device *ieee,
struct sk_buff *skb, struct libipw_rx_stats *stats);
extern int libipw_rx(struct libipw_device *ieee, struct sk_buff *skb,
struct libipw_rx_stats *rx_stats);
/* make sure to set stats->len */
extern void libipw_rx_mgt(struct libipw_device *ieee,
struct libipw_hdr_4addr *header,
struct libipw_rx_stats *stats);
extern void libipw_network_reset(struct libipw_network *network);
/* libipw_geo.c */
extern const struct libipw_geo *libipw_get_geo(struct libipw_device
*ieee);
extern int libipw_set_geo(struct libipw_device *ieee,
const struct libipw_geo *geo);
extern int libipw_is_valid_channel(struct libipw_device *ieee,
u8 channel);
extern int libipw_channel_to_index(struct libipw_device *ieee,
u8 channel);
extern u8 libipw_freq_to_channel(struct libipw_device *ieee, u32 freq);
extern u8 libipw_get_channel_flags(struct libipw_device *ieee,
u8 channel);
extern const struct libipw_channel *libipw_get_channel(struct
libipw_device
*ieee, u8 channel);
extern u32 libipw_channel_to_freq(struct libipw_device * ieee,
u8 channel);
/* libipw_wx.c */
extern int libipw_wx_get_scan(struct libipw_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern int libipw_wx_set_encode(struct libipw_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern int libipw_wx_get_encode(struct libipw_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *key);
extern int libipw_wx_set_encodeext(struct libipw_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
extern int libipw_wx_get_encodeext(struct libipw_device *ieee,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra);
static inline void libipw_increment_scans(struct libipw_device *ieee)
{
ieee->scans++;
}
static inline int libipw_get_scans(struct libipw_device *ieee)
{
return ieee->scans;
}
#endif /* LIBIPW_H */
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