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ieee80211.h
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ieee80211.h
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/* Copyright 2006 Aruba Networks */
#ifndef IEEE80211_H
#define IEEE80211_H
#define DOT11HDR_A1_LEN 10
#define DOT11HDR_A3_LEN 24
#define DOT11HDR_A4_LEN 30
#define DOT11HDR_MAC_LEN 6
#define DOT11HDR_MINLEN DOT11HDR_A1_LEN
#define DOT11_FC_TYPE_MGMT 0
#define DOT11_FC_TYPE_CTRL 1
#define DOT11_FC_TYPE_DATA 2
#define DOT11_FC_SUBTYPE_ASSOCREQ 0
#define DOT11_FC_SUBTYPE_ASSOCRESP 1
#define DOT11_FC_SUBTYPE_REASSOCREQ 2
#define DOT11_FC_SUBTYPE_REASSOCRESP 3
#define DOT11_FC_SUBTYPE_PROBEREQ 4
#define DOT11_FC_SUBTYPE_PROBERESP 5
#define DOT11_FC_SUBTYPE_BEACON 8
#define DOT11_FC_SUBTYPE_ATIM 9
#define DOT11_FC_SUBTYPE_DISASSOC 10
#define DOT11_FC_SUBTYPE_AUTH 11
#define DOT11_FC_SUBTYPE_DEAUTH 12
#define DOT11_FC_SUBTYPE_PSPOLL 10
#define DOT11_FC_SUBTYPE_RTS 11
#define DOT11_FC_SUBTYPE_CTS 12
#define DOT11_FC_SUBTYPE_ACK 13
#define DOT11_FC_SUBTYPE_CFEND 14
#define DOT11_FC_SUBTYPE_CFENDACK 15
#define DOT11_FC_SUBTYPE_DATA 0
#define DOT11_FC_SUBTYPE_DATACFACK 1
#define DOT11_FC_SUBTYPE_DATACFPOLL 2
#define DOT11_FC_SUBTYPE_DATACFACKPOLL 3
#define DOT11_FC_SUBTYPE_DATANULL 4
#define DOT11_FC_SUBTYPE_CFACK 5
#define DOT11_FC_SUBTYPE_CFACKPOLL 6
#define DOT11_FC_SUBTYPE_CFACKPOLLNODATA 7
#define DOT11_FC_SUBTYPE_QOSDATA 8
/* 9 - 11 reserved as of 11/7/2005 - JWRIGHT */
#define DOT11_FC_SUBTYPE_QOSNULL 12
/* Fixed parameter length values for mgmt frames */
#define DOT11_MGMT_BEACON_FIXEDLEN 12
#define DOT11_MGMT_ASSOCREQ_FIXEDLEN 4
#define DOT11_MGMT_ASSOCRESP_FIXEDLEN 6
#define DOT11_MGMT_AUTH_FIXEDLEN 6
/* Authentication algorithm values */
#define DOT11_MGMT_AUTHALGO_SHARED 1
#define DOT11_MGMT_AUTHALGO_OPEN 0
/* Information element identifiers */
#define DOT11_IE_SSIDSET 0
#define DOT11_IE_DSPARAMSET 3
#define DOT11_IE_RSN 48
#define DOT11_IE_WPA 221
/* IE Cipher suite mechanisms for RSN/WPA */
#define DOT11_RSN_CIPHER_GROUP 0 /* Use the group cipher for unicast */
#define DOT11_RSN_CIPHER_WEP40 1 /* WEP-40 */
#define DOT11_RSN_CIPHER_TKIP 2 /* TKIP */
#define DOT11_RSN_CIPHER_RSVD 3 /* Reserved */
#define DOT11_RSN_CIPHER_CCMP 4 /* CCMP */
#define DOT11_RSN_CIPHER_WEP104 5 /* WEP-104 */
/* IE Authentication suite mechanksms for RSN/WPA */
#define DOT11_RSN_AUTH_PMKDER 1 /* Key derived from PMK via 802.1x or
key caching mechanism. */
#define DOT11_RSN_AUTH_PSK 2 /* Key derived from PSK */
/* RSN/WPA element constants */
#define DOT11_RSN_IE_VERSION 1
#define DOT11_RSN_OUI "\x00\x0f\xac"
#define DOT11_RSN_OUI_LEN 3
#define DOT11_WPA_IE_VERSION 1
#define DOT11_WPA_TAG "\x00\x50\xf2\x01"
#define DOT11_WPA_TAG_LEN 4
#define DOT11_WPA_OUI "\x00\x50\xf2"
#define DOT11_WPA_OUI_LEN 3
/* Authentication identifiers */
#define DOT11_PREVAUTH_INVALID 2
struct dot11hdr {
union {
struct {
uint8_t version:2;
uint8_t type:2;
uint8_t subtype:4;
uint8_t to_ds:1;
uint8_t from_ds:1;
uint8_t more_frag:1;
uint8_t retry:1;
uint8_t pwrmgmt:1;
uint8_t more_data:1;
uint8_t protected:1;
uint8_t order:1;
} __attribute__ ((packed)) fc;
uint16_t fchdr;
} u1;
uint16_t duration;
uint8_t addr1[6];
uint8_t addr2[6];
uint8_t addr3[6];
union {
struct {
uint16_t fragment:4;
uint16_t sequence:12;
} __attribute__ ((packed)) seq;
uint16_t seqhdr;
} u2;
} __attribute__ ((packed));
#define dot11hdra3 dot11hdr
#define ieee80211 dot11hdr
struct dot11hdr_a1 {
union {
struct {
uint8_t version:2;
uint8_t type:2;
uint8_t subtype:4;
uint8_t to_ds:1;
uint8_t from_ds:1;
uint8_t more_frag:1;
uint8_t retry:1;
uint8_t pwrmgmt:1;
uint8_t more_data:1;
uint8_t protected:1;
uint8_t order:1;
} __attribute__ ((packed)) fc;
uint16_t fchdr;
} u1;
uint16_t duration;
uint8_t addr1[6];
} __attribute__ ((packed));
struct dot11hdr_a4 {
union {
struct {
uint8_t version:2;
uint8_t type:2;
uint8_t subtype:4;
uint8_t to_ds:1;
uint8_t from_ds:1;
uint8_t more_frag:1;
uint8_t retry:1;
uint8_t pwrmgmt:1;
uint8_t more_data:1;
uint8_t protected:1;
uint8_t order:1;
} __attribute__ ((packed)) fc;
uint16_t fchdr;
} u1;
uint16_t duration;
uint8_t addr1[6];
uint8_t addr2[6];
uint8_t addr3[6];
union {
struct {
uint16_t fragment:4;
uint16_t sequence:12;
} __attribute__ ((packed)) seq;
uint16_t seqhdr;
} u2;
uint8_t addr4[6];
} __attribute__ ((packed));
struct dot11_mgmt {
union {
struct {
uint16_t auth_algo;
uint16_t auth_transaction;
uint16_t status_code;
/* possibly followed by Challenge text */
uint8_t variable[0];
} __attribute__ ((packed)) auth;
struct {
uint16_t reason_code;
} __attribute__ ((packed)) deauth;
struct {
uint16_t capab_info;
uint16_t listen_interval;
/* followed by SSID and Supported rates */
uint8_t variable[0];
} __attribute__ ((packed)) assoc_req;
struct {
uint16_t capab_info;
uint16_t status_code;
uint16_t aid;
/* followed by Supported rates */
uint8_t variable[0];
} __attribute__ ((packed)) assoc_resp, reassoc_resp;
struct {
uint16_t capab_info;
uint16_t listen_interval;
uint8_t current_ap[6];
/* followed by SSID and Supported rates */
uint8_t variable[0];
} __attribute__ ((packed)) reassoc_req;
struct {
uint16_t reason_code;
} __attribute__ ((packed)) disassoc;
struct {
uint8_t variable[0];
} __attribute__ ((packed)) probe_req;
struct {
uint8_t timestamp[8];
uint16_t beacon_int;
uint16_t capab_info;
/* followed by some of SSID, Supported rates,
* FH Params, DS Params, CF Params, IBSS Params, TIM */
uint8_t variable[0];
} __attribute__ ((packed)) beacon;
} u;
} __attribute__ ((packed));
/* IEEE 802.11 fixed parameters */
struct ieee80211_beacon_fixparm {
uint8_t timestamp[8];
uint16_t beaconinterval;
uint16_t capability;
} __attribute__ ((packed));
struct ieee80211_qos {
uint8_t priority:3;
uint8_t reserved3:1;
uint8_t eosp:1;
uint8_t ackpol:2;
uint8_t reserved1:1;
uint8_t reserved2;
} __attribute__ ((packed));
#define DOT11HDR_QOS_LEN 2
struct ieee80211_wep {
uint8_t iv[3];
union {
uint8_t indexhdr;
struct {
uint8_t reserved:6;
uint8_t keyid:2;
} __attribute__ ((packed)) index;
} u1;
} __attribute__ ((packed));
struct ieee80211_tkip {
union {
struct {
uint8_t tsc1;
uint8_t wepseed;
uint8_t tsc0;
uint8_t reserved1:5;
uint8_t extiv:1;
uint8_t keyid:2;
} __attribute__ ((packed)) iv;
uint8_t ivhdr;
} u1;
union {
struct {
uint8_t tsc2;
uint8_t tsc3;
uint8_t tsc4;
uint8_t tsc5;
} extiv;
uint8_t extivhdr;
} u2;
} __attribute__ ((packed));
struct ieee80211_ccmp {
union {
struct {
uint8_t pn0;
uint8_t pn1;
uint8_t reserved1;
uint8_t reserved2:5;
uint8_t extiv:1;
uint8_t keyid:2;
} __attribute__ ((packed)) iv;
uint8_t ivhdr;
} u1;
union {
struct {
uint8_t pn2;
uint8_t pn3;
uint8_t pn4;
uint8_t pn5;
} extiv;
uint8_t extivhdr[4];
} u2;
} __attribute__ ((packed));
struct ieee8022 {
uint8_t dsap;
uint8_t ssap;
uint8_t control;
uint8_t oui[3];
uint16_t type;
} __attribute__ ((packed));
#define DOT2HDR_LEN sizeof(struct ieee8022)
#define IEEE8022_SNAP 0xaa
#define IEEE8022_TYPE_IP 0x0800
#define IEEE8022_TYPE_DOT1X 0x888e
#define IEEE8022_TYPE_ARP 0x0806
#endif