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tcpdump/ieee802_11.h

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Don't attempt to dissect the payload of a no-data frame.
2007-07-23 03:59:06 +08:00
/* @(#) $Header: /tcpdump/master/tcpdump/ieee802_11.h,v 1.12 2007-07-22 19:59:06 guy Exp $ (LBL) */
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/*
* Copyright (c) 2001
* Fortress Technologies
* Charlie Lenahan ( clenahan@fortresstech.com )
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
/* Lengths of 802.11 header components. */
#define IEEE802_11_FC_LEN 2
#define IEEE802_11_DUR_LEN 2
#define IEEE802_11_DA_LEN 6
#define IEEE802_11_SA_LEN 6
#define IEEE802_11_BSSID_LEN 6
#define IEEE802_11_RA_LEN 6
#define IEEE802_11_TA_LEN 6
#define IEEE802_11_SEQ_LEN 2
#define IEEE802_11_IV_LEN 3
#define IEEE802_11_KID_LEN 1
/* Frame check sequence length. */
#define IEEE802_11_FCS_LEN 4
/* Lengths of beacon components. */
#define IEEE802_11_TSTAMP_LEN 8
#define IEEE802_11_BCNINT_LEN 2
#define IEEE802_11_CAPINFO_LEN 2
#define IEEE802_11_LISTENINT_LEN 2
#define IEEE802_11_AID_LEN 2
#define IEEE802_11_STATUS_LEN 2
#define IEEE802_11_REASON_LEN 2
/* Length of previous AP in reassocation frame */
#define IEEE802_11_AP_LEN 6
#define T_MGMT 0x0 /* management */
#define T_CTRL 0x1 /* control */
#define T_DATA 0x2 /* data */
#define T_RESV 0x3 /* reserved */
#define ST_ASSOC_REQUEST 0x0
#define ST_ASSOC_RESPONSE 0x1
#define ST_REASSOC_REQUEST 0x2
#define ST_REASSOC_RESPONSE 0x3
#define ST_PROBE_REQUEST 0x4
#define ST_PROBE_RESPONSE 0x5
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/* RESERVED 0x6 */
/* RESERVED 0x7 */
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define ST_BEACON 0x8
#define ST_ATIM 0x9
#define ST_DISASSOC 0xA
#define ST_AUTH 0xB
#define ST_DEAUTH 0xC
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/* RESERVED 0xD */
/* RESERVED 0xE */
/* RESERVED 0xF */
Handle frames with an FCS (at least with a radiotap header). Handle (to some degree) 802.11n Control Wrapper, Block Ack Req, and Block Ack frames.
2009-01-15 18:35:19 +08:00
#define CTRL_CONTROL_WRAPPER 0x7
#define CTRL_BLOCK_ACK_REQ 0x8
#define CTRL_BLOCK_ACK 0x9
#define CTRL_PS_POLL 0xA
#define CTRL_RTS 0xB
#define CTRL_CTS 0xC
#define CTRL_ACK 0xD
#define CTRL_CF_END 0xE
#define CTRL_END_ACK 0xF
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
Don't attempt to dissect the payload of a no-data frame.
2007-07-23 03:59:06 +08:00
#define DATA_DATA 0x0
#define DATA_DATA_CF_ACK 0x1
#define DATA_DATA_CF_POLL 0x2
#define DATA_DATA_CF_ACK_POLL 0x3
#define DATA_NODATA 0x4
#define DATA_NODATA_CF_ACK 0x5
#define DATA_NODATA_CF_POLL 0x6
#define DATA_NODATA_CF_ACK_POLL 0x7
#define DATA_QOS_DATA 0x8
#define DATA_QOS_DATA_CF_ACK 0x9
#define DATA_QOS_DATA_CF_POLL 0xA
#define DATA_QOS_DATA_CF_ACK_POLL 0xB
#define DATA_QOS_NODATA 0xC
#define DATA_QOS_CF_POLL_NODATA 0xE
#define DATA_QOS_CF_ACK_POLL_NODATA 0xF
/*
* The subtype field of a data frame is, in effect, composed of 4 flag
* bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have
* any data), and QoS.
*/
#define DATA_FRAME_IS_CF_ACK(x) ((x) & 0x01)
#define DATA_FRAME_IS_CF_POLL(x) ((x) & 0x02)
#define DATA_FRAME_IS_NULL(x) ((x) & 0x04)
#define DATA_FRAME_IS_QOS(x) ((x) & 0x08)
From David Young: print Ack/Poll information for data frames with contention-free Ack or Poll indications, and print flag bits from the Frame Control field if "-v" was specified.
2003-02-04 13:53:21 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/*
* Bits in the frame control field.
*/
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define FC_VERSION(fc) ((fc) & 0x3)
#define FC_TYPE(fc) (((fc) >> 2) & 0x3)
#define FC_SUBTYPE(fc) (((fc) >> 4) & 0xF)
#define FC_TO_DS(fc) ((fc) & 0x0100)
#define FC_FROM_DS(fc) ((fc) & 0x0200)
#define FC_MORE_FLAG(fc) ((fc) & 0x0400)
#define FC_RETRY(fc) ((fc) & 0x0800)
#define FC_POWER_MGMT(fc) ((fc) & 0x1000)
#define FC_MORE_DATA(fc) ((fc) & 0x2000)
#define FC_WEP(fc) ((fc) & 0x4000)
#define FC_ORDER(fc) ((fc) & 0x8000)
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct mgmt_header_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t da[6];
u_int8_t sa[6];
u_int8_t bssid[6];
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
u_int16_t seq_ctrl;
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\
IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define CAPABILITY_ESS(cap) ((cap) & 0x0001)
#define CAPABILITY_IBSS(cap) ((cap) & 0x0002)
#define CAPABILITY_CFP(cap) ((cap) & 0x0004)
#define CAPABILITY_CFP_REQ(cap) ((cap) & 0x0008)
#define CAPABILITY_PRIVACY(cap) ((cap) & 0x0010)
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
typedef enum {
NOT_PRESENT,
PRESENT,
TRUNCATED
} elem_status_t;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ssid_t {
u_int8_t element_id;
u_int8_t length;
u_char ssid[33]; /* 32 + 1 for null */
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct rates_t {
u_int8_t element_id;
u_int8_t length;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
u_int8_t rate[16];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct challenge_t {
u_int8_t element_id;
u_int8_t length;
u_int8_t text[254]; /* 1-253 + 1 for null */
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct fh_t {
u_int8_t element_id;
u_int8_t length;
u_int16_t dwell_time;
u_int8_t hop_set;
u_int8_t hop_pattern;
u_int8_t hop_index;
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ds_t {
u_int8_t element_id;
u_int8_t length;
u_int8_t channel;
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct cf_t {
u_int8_t element_id;
u_int8_t length;
u_int8_t count;
u_int8_t period;
u_int16_t max_duration;
u_int16_t dur_remaing;
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct tim_t {
u_int8_t element_id;
u_int8_t length;
u_int8_t count;
u_int8_t period;
u_int8_t bitmap_control;
u_int8_t bitmap[251];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define E_SSID 0
#define E_RATES 1
#define E_FH 2
#define E_DS 3
#define E_CF 4
#define E_TIM 5
#define E_IBSS 6
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/* reserved 7 */
/* reserved 8 */
/* reserved 9 */
/* reserved 10 */
/* reserved 11 */
/* reserved 12 */
/* reserved 13 */
/* reserved 14 */
/* reserved 15 */
/* reserved 16 */
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define E_CHALLENGE 16
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
/* reserved 17 */
/* reserved 18 */
/* reserved 19 */
/* reserved 16 */
/* reserved 16 */
struct mgmt_body_t {
Uniformly use IEEE802_11_TSTAMP_LEN as the 802.11 timestamp length and IEEE802_11_AP_LEN as the length of the previous AP in reassociation frame. Before copying variable-length fields from a management frame IE, make sure the length isn't too large.
2005-10-17 15:58:56 +08:00
u_int8_t timestamp[IEEE802_11_TSTAMP_LEN];
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
u_int16_t beacon_interval;
u_int16_t listen_interval;
u_int16_t status_code;
u_int16_t aid;
Uniformly use IEEE802_11_TSTAMP_LEN as the 802.11 timestamp length and IEEE802_11_AP_LEN as the length of the previous AP in reassociation frame. Before copying variable-length fields from a management frame IE, make sure the length isn't too large.
2005-10-17 15:58:56 +08:00
u_char ap[IEEE802_11_AP_LEN];
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
u_int16_t reason_code;
u_int16_t auth_alg;
u_int16_t auth_trans_seq_num;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t challenge_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct challenge_t challenge;
u_int16_t capability_info;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t ssid_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ssid_t ssid;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t rates_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct rates_t rates;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t ds_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ds_t ds;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t cf_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct cf_t cf;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t fh_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct fh_t fh;
Have parse_elements() flag each item as "present (and not truncated)", "present but truncated", and "not present", and don't have it return an indication of whether we ran past the end of a packet - instead, have the routines that handle particular management frame types use macros that check what the status of a particular tagged parameter is and: print it if present and not truncated; skip it if not present; return a "packet truncated" indication if present but truncated. This means we handle tagged parameters that aren't present, and print parameters that are present and not truncated even if there's a present-but-truncated field after them. Add some additional bounds checks. Make the table of rates bigger - there can be more than 8 rates in a rates tagged parameter.
2005-11-13 20:07:25 +08:00
elem_status_t tim_status;
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct tim_t tim;
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_rts_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
u_int8_t ta[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_cts_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_ack_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_ps_poll_t {
u_int16_t fc;
u_int16_t aid;
u_int8_t bssid[6];
u_int8_t ta[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\
IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_end_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
u_int8_t bssid[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
struct ctrl_end_ack_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
u_int8_t bssid[6];
Don't make the FCS field of a control frame structure a "u_int32_t", as that may force it to be aligned on a 4-byte boundary, and it's not always aligned on a 4-byte boundary in those structures. Add a bunch of bounds checking. "ctrl_body_print()" expects its first argument to point to the beginning of the link-level frame; pass it a pointer to that, not to the stuff following the link-level frame.
2001-06-13 15:25:57 +08:00
u_int8_t fcs[4];
The "__attribute__((packed))" tag on structures causes some files not to compile with Sun C, as "interface.h" isn't being included before the structures are being declared. Furthermore, in the files that Sun C *can* compile, it doesn't cause Sun C to generate code that's safe with unaligned accesses, as "__attribute__" is defined as a do-nothing macro with compilers that don't support it. Therefore, we get rid of that tag on the structures to which it was added, and instead use "EXTRACT_16BIT()" and "EXTRACT_32BIT()" to fetch 16-bit and 32-bit big-endian quantities from packets. We also fix some other references to multi-byte quantities to get rid of code that tries to do unaligned loads on platforms that don't support them. We also throw in a hack that makes those macros use "__attribute__((packed))" on structures containing only one 16-bit or 32-bit integer to get the compiler to generate unaligned-safe code rather than doing it by hand. (GCC on SPARC produces the same code that doing it by hand does; I don't know if GCC on any other big-endian strict-alignment processor generates better code for that case. On little-endian processors, as "ntohs()" and "ntohl()" might be functions, that might actually produce worse code.) Fix some places to use "%u" rather than "%d" to print unsigned quantities.
2002-12-11 15:13:49 +08:00
};
IEEE 802.11 support, from Charlie Lenahan <clenahan@fortresstech.com>.
2001-06-12 13:17:16 +08:00
From David Young: [This patch] fixes some bugs and adds a new feature. Control packets were showing as [|802.11] because tcpdump expected for there to be an FCS on each one (wrong assumption). Also, even if pieces of a control packet are missing, I have made tcpdump print its type when it knows it. The new features is that if you give -v, the 802.11 Duration field (for virtual carrier sense) is printed. This is useful for detecting hardware/firmware bugs (!!) and for debugging the new crop of 802.11 drivers.
2003-07-23 01:36:57 +08:00
#define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
Don't use "sizeof" to compute the sizes of various headers - the structures for the headers might have padding added by the compiler (I think at least some versions of GCC for ARM, for example, pad structures to a multiple of 4 bytes in length), use explicit #define values. The sequence control field of a management frame header is 16 bits long, not 8 bits long.
2001-06-14 17:50:01 +08:00
Handle frames with an FCS (at least with a radiotap header). Handle (to some degree) 802.11n Control Wrapper, Block Ack Req, and Block Ack frames.
2009-01-15 18:35:19 +08:00
struct ctrl_block_ack_req_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
u_int8_t ta[6];
u_int16_t bar_control;
};
#define CTRL_BLOCK_ACK_REQ_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
struct ctrl_block_ack_t {
u_int16_t fc;
u_int16_t duration;
u_int8_t ra[6];
u_int8_t ta[6];
u_int16_t ba_control;
};
#define CTRL_BLOCK_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
Stylistic cleanups, from David Young.
2003-07-23 01:35:04 +08:00
#define IV_IV(iv) ((iv) & 0xFFFFFF)
#define IV_PAD(iv) (((iv) >> 24) & 0x3F)
#define IV_KEYID(iv) (((iv) >> 30) & 0x03)
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