diff options
Diffstat (limited to 'drivers/staging/wlan-ng/p80211hdr.h')
| -rw-r--r-- | drivers/staging/wlan-ng/p80211hdr.h | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/drivers/staging/wlan-ng/p80211hdr.h b/drivers/staging/wlan-ng/p80211hdr.h new file mode 100644 index 000000000000..b7b0872fd861 --- /dev/null +++ b/drivers/staging/wlan-ng/p80211hdr.h @@ -0,0 +1,299 @@ +/* p80211hdr.h +* +* Macros, types, and functions for handling 802.11 MAC headers +* +* 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. +* +* Note: +* - 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. +* +* All functions declared here are implemented in p80211.c +* -------------------------------------------------------------------- +*/ + +#ifndef _P80211HDR_H +#define _P80211HDR_H + +/*================================================================*/ +/* System Includes */ + +/*================================================================*/ +/* Project Includes */ + +#ifndef _WLAN_COMPAT_H +#include "wlan_compat.h" +#endif + + +/*================================================================*/ +/* Constants */ + +/*--- Sizes -----------------------------------------------*/ +#define WLAN_ADDR_LEN 6 +#define WLAN_CRC_LEN 4 +#define WLAN_BSSID_LEN 6 +#define WLAN_BSS_TS_LEN 8 +#define WLAN_HDR_A3_LEN 24 +#define WLAN_HDR_A4_LEN 30 +#define WLAN_SSID_MAXLEN 32 +#define WLAN_DATA_MAXLEN 2312 +#define WLAN_A3FR_MAXLEN (WLAN_HDR_A3_LEN + WLAN_DATA_MAXLEN + WLAN_CRC_LEN) +#define WLAN_A4FR_MAXLEN (WLAN_HDR_A4_LEN + WLAN_DATA_MAXLEN + WLAN_CRC_LEN) +#define WLAN_BEACON_FR_MAXLEN (WLAN_HDR_A3_LEN + 334) +#define WLAN_ATIM_FR_MAXLEN (WLAN_HDR_A3_LEN + 0) +#define WLAN_DISASSOC_FR_MAXLEN (WLAN_HDR_A3_LEN + 2) +#define WLAN_ASSOCREQ_FR_MAXLEN (WLAN_HDR_A3_LEN + 48) +#define WLAN_ASSOCRESP_FR_MAXLEN (WLAN_HDR_A3_LEN + 16) +#define WLAN_REASSOCREQ_FR_MAXLEN (WLAN_HDR_A3_LEN + 54) +#define WLAN_REASSOCRESP_FR_MAXLEN (WLAN_HDR_A3_LEN + 16) +#define WLAN_PROBEREQ_FR_MAXLEN (WLAN_HDR_A3_LEN + 44) +#define WLAN_PROBERESP_FR_MAXLEN (WLAN_HDR_A3_LEN + 78) +#define WLAN_AUTHEN_FR_MAXLEN (WLAN_HDR_A3_LEN + 261) +#define WLAN_DEAUTHEN_FR_MAXLEN (WLAN_HDR_A3_LEN + 2) +#define WLAN_WEP_NKEYS 4 +#define WLAN_WEP_MAXKEYLEN 13 +#define WLAN_CHALLENGE_IE_LEN 130 +#define WLAN_CHALLENGE_LEN 128 +#define WLAN_WEP_IV_LEN 4 +#define WLAN_WEP_ICV_LEN 4 + +/*--- Frame Control Field -------------------------------------*/ +/* Frame Types */ +#define WLAN_FTYPE_MGMT 0x00 +#define WLAN_FTYPE_CTL 0x01 +#define WLAN_FTYPE_DATA 0x02 + +/* Frame subtypes */ +/* Management */ +#define WLAN_FSTYPE_ASSOCREQ 0x00 +#define WLAN_FSTYPE_ASSOCRESP 0x01 +#define WLAN_FSTYPE_REASSOCREQ 0x02 +#define WLAN_FSTYPE_REASSOCRESP 0x03 +#define WLAN_FSTYPE_PROBEREQ 0x04 +#define WLAN_FSTYPE_PROBERESP 0x05 +#define WLAN_FSTYPE_BEACON 0x08 +#define WLAN_FSTYPE_ATIM 0x09 +#define WLAN_FSTYPE_DISASSOC 0x0a +#define WLAN_FSTYPE_AUTHEN 0x0b +#define WLAN_FSTYPE_DEAUTHEN 0x0c + +/* Control */ +#define WLAN_FSTYPE_BLOCKACKREQ 0x8 +#define WLAN_FSTYPE_BLOCKACK 0x9 +#define WLAN_FSTYPE_PSPOLL 0x0a +#define WLAN_FSTYPE_RTS 0x0b +#define WLAN_FSTYPE_CTS 0x0c +#define WLAN_FSTYPE_ACK 0x0d +#define WLAN_FSTYPE_CFEND 0x0e +#define WLAN_FSTYPE_CFENDCFACK 0x0f + +/* Data */ +#define WLAN_FSTYPE_DATAONLY 0x00 +#define WLAN_FSTYPE_DATA_CFACK 0x01 +#define WLAN_FSTYPE_DATA_CFPOLL 0x02 +#define WLAN_FSTYPE_DATA_CFACK_CFPOLL 0x03 +#define WLAN_FSTYPE_NULL 0x04 +#define WLAN_FSTYPE_CFACK 0x05 +#define WLAN_FSTYPE_CFPOLL 0x06 +#define WLAN_FSTYPE_CFACK_CFPOLL 0x07 + + +/*================================================================*/ +/* Macros */ + +/*--- FC Macros ----------------------------------------------*/ +/* Macros to get/set the bitfields of the Frame Control Field */ +/* GET_FC_??? - takes the host byte-order value of an FC */ +/* and retrieves the value of one of the */ +/* bitfields and moves that value so its lsb is */ +/* in bit 0. */ +/* SET_FC_??? - takes a host order value for one of the FC */ +/* bitfields and moves it to the proper bit */ +/* location for ORing into a host order FC. */ +/* To send the FC produced from SET_FC_???, */ +/* one must put the bytes in IEEE order. */ +/* e.g. */ +/* printf("the frame subtype is %x", */ +/* GET_FC_FTYPE( ieee2host( rx.fc ))) */ +/* */ +/* tx.fc = host2ieee( SET_FC_FTYPE(WLAN_FTYP_CTL) | */ +/* SET_FC_FSTYPE(WLAN_FSTYPE_RTS) ); */ +/*------------------------------------------------------------*/ + +#define WLAN_GET_FC_PVER(n) (((UINT16)(n)) & (BIT0 | BIT1)) +#define WLAN_GET_FC_FTYPE(n) ((((UINT16)(n)) & (BIT2 | BIT3)) >> 2) +#define WLAN_GET_FC_FSTYPE(n) ((((UINT16)(n)) & (BIT4|BIT5|BIT6|BIT7)) >> 4) +#define WLAN_GET_FC_TODS(n) ((((UINT16)(n)) & (BIT8)) >> 8) +#define WLAN_GET_FC_FROMDS(n) ((((UINT16)(n)) & (BIT9)) >> 9) +#define WLAN_GET_FC_MOREFRAG(n) ((((UINT16)(n)) & (BIT10)) >> 10) +#define WLAN_GET_FC_RETRY(n) ((((UINT16)(n)) & (BIT11)) >> 11) +#define WLAN_GET_FC_PWRMGT(n) ((((UINT16)(n)) & (BIT12)) >> 12) +#define WLAN_GET_FC_MOREDATA(n) ((((UINT16)(n)) & (BIT13)) >> 13) +#define WLAN_GET_FC_ISWEP(n) ((((UINT16)(n)) & (BIT14)) >> 14) +#define WLAN_GET_FC_ORDER(n) ((((UINT16)(n)) & (BIT15)) >> 15) + +#define WLAN_SET_FC_PVER(n) ((UINT16)(n)) +#define WLAN_SET_FC_FTYPE(n) (((UINT16)(n)) << 2) +#define WLAN_SET_FC_FSTYPE(n) (((UINT16)(n)) << 4) +#define WLAN_SET_FC_TODS(n) (((UINT16)(n)) << 8) +#define WLAN_SET_FC_FROMDS(n) (((UINT16)(n)) << 9) +#define WLAN_SET_FC_MOREFRAG(n) (((UINT16)(n)) << 10) +#define WLAN_SET_FC_RETRY(n) (((UINT16)(n)) << 11) +#define WLAN_SET_FC_PWRMGT(n) (((UINT16)(n)) << 12) +#define WLAN_SET_FC_MOREDATA(n) (((UINT16)(n)) << 13) +#define WLAN_SET_FC_ISWEP(n) (((UINT16)(n)) << 14) +#define WLAN_SET_FC_ORDER(n) (((UINT16)(n)) << 15) + +/*--- Duration Macros ----------------------------------------*/ +/* Macros to get/set the bitfields of the Duration Field */ +/* - the duration value is only valid when bit15 is zero */ +/* - the firmware handles these values, so I'm not going */ +/* these macros right now. */ +/*------------------------------------------------------------*/ + +/*--- Sequence Control Macros -------------------------------*/ +/* Macros to get/set the bitfields of the Sequence Control */ +/* Field. */ +/*------------------------------------------------------------*/ +#define WLAN_GET_SEQ_FRGNUM(n) (((UINT16)(n)) & (BIT0|BIT1|BIT2|BIT3)) +#define WLAN_GET_SEQ_SEQNUM(n) ((((UINT16)(n)) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4) + +/*--- Data ptr macro -----------------------------------------*/ +/* Creates a UINT8* to the data portion of a frame */ +/* Assumes you're passing in a ptr to the beginning of the hdr*/ +/*------------------------------------------------------------*/ +#define WLAN_HDR_A3_DATAP(p) (((UINT8*)(p)) + WLAN_HDR_A3_LEN) +#define WLAN_HDR_A4_DATAP(p) (((UINT8*)(p)) + WLAN_HDR_A4_LEN) + +#define DOT11_RATE5_ISBASIC_GET(r) (((UINT8)(r)) & BIT7) + +/*================================================================*/ +/* Types */ + +/* BSS Timestamp */ +typedef UINT8 wlan_bss_ts_t[WLAN_BSS_TS_LEN]; + +/* Generic 802.11 Header types */ + +typedef struct p80211_hdr_a3 +{ + UINT16 fc; + UINT16 dur; + UINT8 a1[WLAN_ADDR_LEN]; + UINT8 a2[WLAN_ADDR_LEN]; + UINT8 a3[WLAN_ADDR_LEN]; + UINT16 seq; +} __WLAN_ATTRIB_PACK__ p80211_hdr_a3_t; + +typedef struct p80211_hdr_a4 +{ + UINT16 fc; + UINT16 dur; + UINT8 a1[WLAN_ADDR_LEN]; + UINT8 a2[WLAN_ADDR_LEN]; + UINT8 a3[WLAN_ADDR_LEN]; + UINT16 seq; + UINT8 a4[WLAN_ADDR_LEN]; +} __WLAN_ATTRIB_PACK__ p80211_hdr_a4_t; + +typedef union p80211_hdr +{ + p80211_hdr_a3_t a3; + p80211_hdr_a4_t a4; +} __WLAN_ATTRIB_PACK__ p80211_hdr_t; + + +/*================================================================*/ +/* Extern Declarations */ + + +/*================================================================*/ +/* Function Declarations */ + +/* Frame and header lenght macros */ + +#define WLAN_CTL_FRAMELEN(fstype) (\ + (fstype) == WLAN_FSTYPE_BLOCKACKREQ ? 24 : \ + (fstype) == WLAN_FSTYPE_BLOCKACK ? 152 : \ + (fstype) == WLAN_FSTYPE_PSPOLL ? 20 : \ + (fstype) == WLAN_FSTYPE_RTS ? 20 : \ + (fstype) == WLAN_FSTYPE_CTS ? 14 : \ + (fstype) == WLAN_FSTYPE_ACK ? 14 : \ + (fstype) == WLAN_FSTYPE_CFEND ? 20 : \ + (fstype) == WLAN_FSTYPE_CFENDCFACK ? 20 : 4) + +#define WLAN_FCS_LEN 4 + +/* ftcl in HOST order */ +inline static UINT16 p80211_headerlen(UINT16 fctl) +{ + UINT16 hdrlen = 0; + + switch ( WLAN_GET_FC_FTYPE(fctl) ) { + case WLAN_FTYPE_MGMT: + hdrlen = WLAN_HDR_A3_LEN; + break; + case WLAN_FTYPE_DATA: + hdrlen = WLAN_HDR_A3_LEN; + if ( WLAN_GET_FC_TODS(fctl) && WLAN_GET_FC_FROMDS(fctl) ) { + hdrlen += WLAN_ADDR_LEN; + } + break; + case WLAN_FTYPE_CTL: + hdrlen = WLAN_CTL_FRAMELEN(WLAN_GET_FC_FSTYPE(fctl)) - + WLAN_FCS_LEN; + break; + default: + hdrlen = WLAN_HDR_A3_LEN; + } + + return hdrlen; +} + +#endif /* _P80211HDR_H */ |