--- /dev/null
+/* src/include/wlan/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
+* --------------------------------------------------------------------
+*/
+
+FILE_LICENCE ( GPL2_ONLY );
+
+#ifndef _P80211HDR_H
+#define _P80211HDR_H
+
+/*================================================================*/
+/* System Includes */
+
+/*================================================================*/
+/* Project Includes */
+
+#ifndef _WLAN_COMPAT_H
+#include <wlan/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_t)(n)) & (BIT0 | BIT1))
+#define WLAN_GET_FC_FTYPE(n) ((((uint16_t)(n)) & (BIT2 | BIT3)) >> 2)
+#define WLAN_GET_FC_FSTYPE(n) ((((uint16_t)(n)) & (BIT4|BIT5|BIT6|BIT7)) >> 4)
+#define WLAN_GET_FC_TODS(n) ((((uint16_t)(n)) & (BIT8)) >> 8)
+#define WLAN_GET_FC_FROMDS(n) ((((uint16_t)(n)) & (BIT9)) >> 9)
+#define WLAN_GET_FC_MOREFRAG(n) ((((uint16_t)(n)) & (BIT10)) >> 10)
+#define WLAN_GET_FC_RETRY(n) ((((uint16_t)(n)) & (BIT11)) >> 11)
+#define WLAN_GET_FC_PWRMGT(n) ((((uint16_t)(n)) & (BIT12)) >> 12)
+#define WLAN_GET_FC_MOREDATA(n) ((((uint16_t)(n)) & (BIT13)) >> 13)
+#define WLAN_GET_FC_ISWEP(n) ((((uint16_t)(n)) & (BIT14)) >> 14)
+#define WLAN_GET_FC_ORDER(n) ((((uint16_t)(n)) & (BIT15)) >> 15)
+
+#define WLAN_SET_FC_PVER(n) ((uint16_t)(n))
+#define WLAN_SET_FC_FTYPE(n) (((uint16_t)(n)) << 2)
+#define WLAN_SET_FC_FSTYPE(n) (((uint16_t)(n)) << 4)
+#define WLAN_SET_FC_TODS(n) (((uint16_t)(n)) << 8)
+#define WLAN_SET_FC_FROMDS(n) (((uint16_t)(n)) << 9)
+#define WLAN_SET_FC_MOREFRAG(n) (((uint16_t)(n)) << 10)
+#define WLAN_SET_FC_RETRY(n) (((uint16_t)(n)) << 11)
+#define WLAN_SET_FC_PWRMGT(n) (((uint16_t)(n)) << 12)
+#define WLAN_SET_FC_MOREDATA(n) (((uint16_t)(n)) << 13)
+#define WLAN_SET_FC_ISWEP(n) (((uint16_t)(n)) << 14)
+#define WLAN_SET_FC_ORDER(n) (((uint16_t)(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_t)(n)) & (BIT0|BIT1|BIT2|BIT3))
+#define WLAN_GET_SEQ_SEQNUM(n) ((((uint16_t)(n)) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4)
+
+/*--- Data ptr macro -----------------------------------------*/
+/* Creates a uint8_t* 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_t*)(p)) + WLAN_HDR_A3_LEN)
+#define WLAN_HDR_A4_DATAP(p) (((uint8_t*)(p)) + WLAN_HDR_A4_LEN)
+
+#define DOT11_RATE5_ISBASIC_GET(r) (((uint8_t)(r)) & BIT7)
+
+/*================================================================*/
+/* Types */
+
+/* BSS Timestamp */
+typedef uint8_t wlan_bss_ts_t[WLAN_BSS_TS_LEN];
+
+/* Generic 802.11 Header types */
+
+typedef struct p80211_hdr_a3
+{
+ uint16_t fc;
+ uint16_t dur;
+ uint8_t a1[WLAN_ADDR_LEN];
+ uint8_t a2[WLAN_ADDR_LEN];
+ uint8_t a3[WLAN_ADDR_LEN];
+ uint16_t seq;
+} __WLAN_ATTRIB_PACK__ p80211_hdr_a3_t;
+
+typedef struct p80211_hdr_a4
+{
+ uint16_t fc;
+ uint16_t dur;
+ uint8_t a1[WLAN_ADDR_LEN];
+ uint8_t a2[WLAN_ADDR_LEN];
+ uint8_t a3[WLAN_ADDR_LEN];
+ uint16_t seq;
+ uint8_t 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 length 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_t p80211_headerlen(uint16_t fctl)
+{
+ uint16_t 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 */
Code Review / kvmfornfv.git / blobdiff