/* p80211mgmt.h
*
* Macros, types, and functions to handle 802.11 mgmt frames
*
* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved.
* --------------------------------------------------------------------
*
* linux-wlan
*
* The contents of this file are subject to the Mozilla Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Alternatively, the contents of this file may be used under the
* terms of the GNU Public License version 2 (the "GPL"), in which
* case the provisions of the GPL are applicable instead of the
* above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use
* your version of this file under the MPL, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete
* the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* --------------------------------------------------------------------
*
* Inquiries regarding the linux-wlan Open Source project can be
* made directly to:
*
* AbsoluteValue Systems Inc.
* info@linux-wlan.com
* http://www.linux-wlan.com
*
* --------------------------------------------------------------------
*
* Portions of the development of this software were funded by
* Intersil Corporation as part of PRISM(R) chipset product development.
*
* --------------------------------------------------------------------
*
* This file declares the constants and types used in the interface
* between a wlan driver and the user mode utilities.
*
* Notes:
* - Constant values are always in HOST byte order. To assign
* values to multi-byte fields they _must_ be converted to
* ieee byte order. To retrieve multi-byte values from incoming
* frames, they must be converted to host order.
*
* - The len member of the frame structure does NOT!!! include
* the MAC CRC. Therefore, the len field on rx'd frames should
* have 4 subtracted from it.
*
* All functions declared here are implemented in p80211.c
*
* The types, macros, and functions defined here are primarily
* used for encoding and decoding management frames. They are
* designed to follow these patterns of use:
*
* DECODE:
* 1) a frame of length len is received into buffer b
* 2) using the hdr structure and macros, we determine the type
* 3) an appropriate mgmt frame structure, mf, is allocated and zeroed
* 4) mf.hdr = b
* mf.buf = b
* mf.len = len
* 5) call mgmt_decode( mf )
* 6) the frame field pointers in mf are now set. Note that any
* multi-byte frame field values accessed using the frame field
* pointers are in ieee byte order and will have to be converted
* to host order.
*
* ENCODE:
* 1) Library client allocates buffer space for maximum length
* frame of the desired type
* 2) Library client allocates a mgmt frame structure, called mf,
* of the desired type
* 3) Set the following:
* mf.type = <desired type>
* mf.buf = <allocated buffer address>
* 4) call mgmt_encode( mf )
* 5) all of the fixed field pointers and fixed length information element
* pointers in mf are now set to their respective locations in the
* allocated space (fortunately, all variable length information elements
* fall at the end of their respective frames).
* 5a) The length field is set to include the last of the fixed and fixed
* length fields. It may have to be updated for optional or variable
* length information elements.
* 6) Optional and variable length information elements are special cases
* and must be handled individually by the client code.
* --------------------------------------------------------------------
*/
#ifndef _P80211MGMT_H
#define _P80211MGMT_H
#ifndef _P80211HDR_H
#include "p80211hdr.h"
#endif
/*-- Information Element IDs --------------------*/
#define WLAN_EID_SSID 0
#define WLAN_EID_SUPP_RATES 1
#define WLAN_EID_FH_PARMS 2
#define WLAN_EID_DS_PARMS 3
#define WLAN_EID_CF_PARMS 4
#define WLAN_EID_TIM 5
#define WLAN_EID_IBSS_PARMS 6
/*-- values 7-15 reserved --*/
#define WLAN_EID_CHALLENGE 16
/*-- values 17-31 reserved for challenge text extension --*/
/*-- values 32-255 reserved --*/
/*-- Reason Codes -------------------------------*/
#define WLAN_MGMT_REASON_RSVD 0
#define WLAN_MGMT_REASON_UNSPEC 1
#define WLAN_MGMT_REASON_PRIOR_AUTH_INVALID 2
#define WLAN_MGMT_REASON_DEAUTH_LEAVING 3
#define WLAN_MGMT_REASON_DISASSOC_INACTIVE 4
#define WLAN_MGMT_REASON_DISASSOC_AP_BUSY 5
#define WLAN_MGMT_REASON_CLASS2_NONAUTH 6
#define WLAN_MGMT_REASON_CLASS3_NONASSOC 7
#define WLAN_MGMT_REASON_DISASSOC_STA_HASLEFT 8
#define WLAN_MGMT_REASON_CANT_ASSOC_NONAUTH 9
/*-- Status Codes -------------------------------*/
#define WLAN_MGMT_STATUS_SUCCESS 0
#define WLAN_MGMT_STATUS_UNSPEC_FAILURE 1
#define WLAN_MGMT_STATUS_CAPS_UNSUPPORTED 10
#define WLAN_MGMT_STATUS_REASSOC_NO_ASSOC 11
#define WLAN_MGMT_STATUS_ASSOC_DENIED_UNSPEC 12
#define WLAN_MGMT_STATUS_UNSUPPORTED_AUTHALG 13
#define WLAN_MGMT_STATUS_RX_AUTH_NOSEQ 14
#define WLAN_MGMT_STATUS_CHALLENGE_FAIL 15
#define WLAN_MGMT_STATUS_AUTH_TIMEOUT 16
#define WLAN_MGMT_STATUS_ASSOC_DENIED_BUSY 17
#define WLAN_MGMT_STATUS_ASSOC_DENIED_RATES 18
/* p80211b additions */
#define WLAN_MGMT_STATUS_ASSOC_DENIED_NOSHORT 19
#define WLAN_MGMT_STATUS_ASSOC_DENIED_NOPBCC 20
#define WLAN_MGMT_STATUS_ASSOC_DENIED_NOAGILITY 21
/*-- Auth Algorithm Field ---------------------------*/
#define WLAN_AUTH_ALG_OPENSYSTEM 0
#define WLAN_AUTH_ALG_SHAREDKEY 1
/*-- Management Frame Field Offsets -------------*/
/* Note: Not all fields are listed because of variable lengths, */
/* see the code in p80211.c to see how we search for fields */
/* Note: These offsets are from the start of the frame data */
#define WLAN_BEACON_OFF_TS 0
#define WLAN_BEACON_OFF_BCN_int 8
#define WLAN_BEACON_OFF_CAPINFO 10
#define WLAN_BEACON_OFF_SSID 12
#define WLAN_DISASSOC_OFF_REASON 0
#define WLAN_ASSOCREQ_OFF_CAP_INFO 0
#define WLAN_ASSOCREQ_OFF_LISTEN_int 2
#define WLAN_ASSOCREQ_OFF_SSID 4
#define WLAN_ASSOCRESP_OFF_CAP_INFO 0
#define WLAN_ASSOCRESP_OFF_STATUS 2
#define WLAN_ASSOCRESP_OFF_AID 4
#define WLAN_ASSOCRESP_OFF_SUPP_RATES 6
#define WLAN_REASSOCREQ_OFF_CAP_INFO 0
#define WLAN_REASSOCREQ_OFF_LISTEN_int 2
#define WLAN_REASSOCREQ_OFF_CURR_AP 4
#define WLAN_REASSOCREQ_OFF_SSID 10
#define WLAN_REASSOCRESP_OFF_CAP_INFO 0
#define WLAN_REASSOCRESP_OFF_STATUS 2
#define WLAN_REASSOCRESP_OFF_AID 4
#define WLAN_REASSOCRESP_OFF_SUPP_RATES 6
#define WLAN_PROBEREQ_OFF_SSID 0
#define WLAN_PROBERESP_OFF_TS 0
#define WLAN_PROBERESP_OFF_BCN_int 8
#define WLAN_PROBERESP_OFF_CAP_INFO 10
#define WLAN_PROBERESP_OFF_SSID 12
#define WLAN_AUTHEN_OFF_AUTH_ALG 0
#define WLAN_AUTHEN_OFF_AUTH_SEQ 2
#define WLAN_AUTHEN_OFF_STATUS 4
#define WLAN_AUTHEN_OFF_CHALLENGE 6
#define WLAN_DEAUTHEN_OFF_REASON 0
/*-- Capability Field ---------------------------*/
#define WLAN_GET_MGMT_CAP_INFO_ESS(n) ((n) & BIT(0))
#define WLAN_GET_MGMT_CAP_INFO_IBSS(n) (((n) & BIT(1)) >> 1)
#define WLAN_GET_MGMT_CAP_INFO_CFPOLLABLE(n) (((n) & BIT(2)) >> 2)
#define WLAN_GET_MGMT_CAP_INFO_CFPOLLREQ(n) (((n) & BIT(3)) >> 3)
#define WLAN_GET_MGMT_CAP_INFO_PRIVACY(n) (((n) & BIT(4)) >> 4)
/* p80211b additions */
#define WLAN_GET_MGMT_CAP_INFO_SHORT(n) (((n) & BIT(5)) >> 5)
#define WLAN_GET_MGMT_CAP_INFO_PBCC(n) (((n) & BIT(6)) >> 6)
#define WLAN_GET_MGMT_CAP_INFO_AGILITY(n) (((n) & BIT(7)) >> 7)
#define WLAN_SET_MGMT_CAP_INFO_ESS(n) (n)
#define WLAN_SET_MGMT_CAP_INFO_IBSS(n) ((n) << 1)
#define WLAN_SET_MGMT_CAP_INFO_CFPOLLABLE(n) ((n) << 2)
#define WLAN_SET_MGMT_CAP_INFO_CFPOLLREQ(n) ((n) << 3)
#define WLAN_SET_MGMT_CAP_INFO_PRIVACY(n) ((n) << 4)
/* p80211b additions */
#define WLAN_SET_MGMT_CAP_INFO_SHORT(n) ((n) << 5)
#define WLAN_SET_MGMT_CAP_INFO_PBCC(n) ((n) << 6)
#define WLAN_SET_MGMT_CAP_INFO_AGILITY(n) ((n) << 7)
/*-- Information Element Types --------------------*/
/* prototype structure, all IEs start with these members */
struct wlan_ie {
u8 eid;
u8 len;
} __packed;
/*-- Service Set Identity (SSID) -----------------*/
struct wlan_ie_ssid {
u8 eid;
u8 len;
u8 ssid[1]; /* may be zero, ptrs may overlap */
} __packed;
/*-- Supported Rates -----------------------------*/
struct wlan_ie_supp_rates {
u8 eid;
u8 len;
u8 rates[1]; /* had better be at LEAST one! */
} __packed;
/*-- FH Parameter Set ----------------------------*/
struct wlan_ie_fh_parms {
u8 eid;
u8 len;
u16 dwell;
u8 hopset;
u8 hoppattern;
u8 hopindex;
} __packed;
/*-- DS Parameter Set ----------------------------*/
struct wlan_ie_ds_parms {
u8 eid;
u8 len;
u8 curr_ch;
} __packed;
/*-- CF Parameter Set ----------------------------*/
struct wlan_ie_cf_parms {
u8 eid;
u8 len;
u8 cfp_cnt;
u8 cfp_period;
u16 cfp_maxdur;
u16 cfp_durremaining;
} __packed;
/*-- TIM ------------------------------------------*/
struct wlan_ie_tim {
u8 eid;
u8 len;
u8 dtim_cnt;
u8 dtim_period;
u8 bitmap_ctl;
u8 virt_bm[1];
} __packed;
/*-- IBSS Parameter Set ---------------------------*/
struct wlan_ie_ibss_parms {
u8 eid;
u8 len;
u16 atim_win;
} __packed;
/*-- Challenge Text ------------------------------*/
struct wlan_ie_challenge {
u8 eid;
u8 len;
u8 challenge[1];
} __packed;
/*-------------------------------------------------*/
/* Frame Types */
/* prototype structure, all mgmt frame types will start with these members */
struct wlan_fr_mgmt {
u16 type;
u16 len; /* DOES NOT include CRC !!!! */
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
/*-- info elements ----------*/
};
/*-- Beacon ---------------------------------------*/
struct wlan_fr_beacon {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u64 *ts;
u16 *bcn_int;
u16 *cap_info;
/*-- info elements ----------*/
struct wlan_ie_ssid *ssid;
struct wlan_ie_supp_rates *supp_rates;
struct wlan_ie_fh_parms *fh_parms;
struct wlan_ie_ds_parms *ds_parms;
struct wlan_ie_cf_parms *cf_parms;
struct wlan_ie_ibss_parms *ibss_parms;
struct wlan_ie_tim *tim;
};
/*-- IBSS ATIM ------------------------------------*/
struct wlan_fr_ibssatim {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
/*-- info elements ----------*/
/* this frame type has a null body */
};
/*-- Disassociation -------------------------------*/
struct wlan_fr_disassoc {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *reason;
/*-- info elements ----------*/
};
/*-- Association Request --------------------------*/
struct wlan_fr_assocreq {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *cap_info;
u16 *listen_int;
/*-- info elements ----------*/
struct wlan_ie_ssid *ssid;
struct wlan_ie_supp_rates *supp_rates;
};
/*-- Association Response -------------------------*/
struct wlan_fr_assocresp {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *cap_info;
u16 *status;
u16 *aid;
/*-- info elements ----------*/
struct wlan_ie_supp_rates *supp_rates;
};
/*-- Reassociation Request ------------------------*/
struct wlan_fr_reassocreq {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *cap_info;
u16 *listen_int;
u8 *curr_ap;
/*-- info elements ----------*/
struct wlan_ie_ssid *ssid;
struct wlan_ie_supp_rates *supp_rates;
};
/*-- Reassociation Response -----------------------*/
struct wlan_fr_reassocresp {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *cap_info;
u16 *status;
u16 *aid;
/*-- info elements ----------*/
struct wlan_ie_supp_rates *supp_rates;
};
/*-- Probe Request --------------------------------*/
struct wlan_fr_probereq {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
/*-- info elements ----------*/
struct wlan_ie_ssid *ssid;
struct wlan_ie_supp_rates *supp_rates;
};
/*-- Probe Response -------------------------------*/
struct wlan_fr_proberesp {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u64 *ts;
u16 *bcn_int;
u16 *cap_info;
/*-- info elements ----------*/
struct wlan_ie_ssid *ssid;
struct wlan_ie_supp_rates *supp_rates;
struct wlan_ie_fh_parms *fh_parms;
struct wlan_ie_ds_parms *ds_parms;
struct wlan_ie_cf_parms *cf_parms;
struct wlan_ie_ibss_parms *ibss_parms;
};
/*-- Authentication -------------------------------*/
struct wlan_fr_authen {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *auth_alg;
u16 *auth_seq;
u16 *status;
/*-- info elements ----------*/
struct wlan_ie_challenge *challenge;
};
/*-- Deauthenication -----------------------------*/
struct wlan_fr_deauthen {
u16 type;
u16 len;
u8 *buf;
union p80211_hdr *hdr;
/* used for target specific data, skb in Linux */
void *priv;
/*-- fixed fields -----------*/
u16 *reason;
/*-- info elements ----------*/
};
void wlan_mgmt_encode_beacon(struct wlan_fr_beacon *f);
void wlan_mgmt_decode_beacon(struct wlan_fr_beacon *f);
void wlan_mgmt_encode_disassoc(struct wlan_fr_disassoc *f);
void wlan_mgmt_decode_disassoc(struct wlan_fr_disassoc *f);
void wlan_mgmt_encode_assocreq(struct wlan_fr_assocreq *f);
void wlan_mgmt_decode_assocreq(struct wlan_fr_assocreq *f);
void wlan_mgmt_encode_assocresp(struct wlan_fr_assocresp *f);
void wlan_mgmt_decode_assocresp(struct wlan_fr_assocresp *f);
void wlan_mgmt_encode_reassocreq(struct wlan_fr_reassocreq *f);
void wlan_mgmt_decode_reassocreq(struct wlan_fr_reassocreq *f);
void wlan_mgmt_encode_reassocresp(struct wlan_fr_reassocresp *f);
void wlan_mgmt_decode_reassocresp(struct wlan_fr_reassocresp *f);
void wlan_mgmt_encode_probereq(struct wlan_fr_probereq *f);
void wlan_mgmt_decode_probereq(struct wlan_fr_probereq *f);
void wlan_mgmt_encode_proberesp(struct wlan_fr_proberesp *f);
void wlan_mgmt_decode_proberesp(struct wlan_fr_proberesp *f);
void wlan_mgmt_encode_authen(struct wlan_fr_authen *f);
void wlan_mgmt_decode_authen(struct wlan_fr_authen *f);
void wlan_mgmt_encode_deauthen(struct wlan_fr_deauthen *f);
void wlan_mgmt_decode_deauthen(struct wlan_fr_deauthen *f);
#endif /* _P80211MGMT_H */