X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/bd00116d80c18b782f4cb15dfc90cd5bf993d4f5..a8c33a5850cd9d2f39e56c06b645c283225d78c4:/print-802_11.c diff --git a/print-802_11.c b/print-802_11.c index 2b4463ec..8ddba1e3 100644 --- a/print-802_11.c +++ b/print-802_11.c @@ -20,15 +20,17 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ +/* \summary: IEEE 802.11 printer */ + #ifdef HAVE_CONFIG_H -#include "config.h" +#include #endif -#include +#include "netdissect-stdinc.h" #include -#include "interface.h" +#include "netdissect.h" #include "addrtoname.h" #include "extract.h" @@ -73,22 +75,22 @@ #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 -/* RESERVED 0x6 */ -/* RESERVED 0x7 */ -#define ST_BEACON 0x8 +#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 +/* RESERVED 0x6 */ +/* RESERVED 0x7 */ +#define ST_BEACON 0x8 #define ST_ATIM 0x9 #define ST_DISASSOC 0xA #define ST_AUTH 0xB #define ST_DEAUTH 0xC #define ST_ACTION 0xD -/* RESERVED 0xE */ -/* RESERVED 0xF */ +/* RESERVED 0xE */ +/* RESERVED 0xF */ static const struct tok st_str[] = { { ST_ASSOC_REQUEST, "Assoc Request" }, @@ -172,12 +174,12 @@ static const struct tok ctrl_str[] = { #define FC_ORDER(fc) ((fc) & 0x8000) struct mgmt_header_t { - uint16_t fc; - uint16_t duration; - uint8_t da[IEEE802_11_DA_LEN]; - uint8_t sa[IEEE802_11_SA_LEN]; - uint8_t bssid[IEEE802_11_BSSID_LEN]; - uint16_t seq_ctrl; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr da; + nd_mac_addr sa; + nd_mac_addr bssid; + nd_uint16_t seq_ctrl; }; #define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ @@ -213,7 +215,7 @@ struct fh_t { uint8_t length; uint16_t dwell_time; uint8_t hop_set; - uint8_t hop_pattern; + uint8_t hop_pattern; uint8_t hop_index; }; @@ -229,7 +231,7 @@ struct cf_t { uint8_t count; uint8_t period; uint16_t max_duration; - uint16_t dur_remaing; + uint16_t dur_remaining; }; struct tim_t { @@ -241,38 +243,38 @@ struct tim_t { uint8_t bitmap[251]; }; -#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 -/* reserved 7 */ -/* reserved 8 */ -/* reserved 9 */ -/* reserved 10 */ -/* reserved 11 */ -/* reserved 12 */ -/* reserved 13 */ -/* reserved 14 */ -/* reserved 15 */ -/* reserved 16 */ - -#define E_CHALLENGE 16 -/* reserved 17 */ -/* reserved 18 */ -/* reserved 19 */ -/* reserved 16 */ -/* reserved 16 */ +#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 +/* reserved 7 */ +/* reserved 8 */ +/* reserved 9 */ +/* reserved 10 */ +/* reserved 11 */ +/* reserved 12 */ +/* reserved 13 */ +/* reserved 14 */ +/* reserved 15 */ +/* reserved 16 */ + +#define E_CHALLENGE 16 +/* reserved 17 */ +/* reserved 18 */ +/* reserved 19 */ +/* reserved 16 */ +/* reserved 16 */ struct mgmt_body_t { - uint8_t timestamp[IEEE802_11_TSTAMP_LEN]; - uint16_t beacon_interval; - uint16_t listen_interval; - uint16_t status_code; - uint16_t aid; + uint8_t timestamp[IEEE802_11_TSTAMP_LEN]; + uint16_t beacon_interval; + uint16_t listen_interval; + uint16_t status_code; + uint16_t aid; u_char ap[IEEE802_11_AP_LEN]; uint16_t reason_code; uint16_t auth_alg; @@ -283,7 +285,7 @@ struct mgmt_body_t { int ssid_present; struct ssid_t ssid; int rates_present; - struct rates_t rates; + struct rates_t rates; int ds_present; struct ds_t ds; int cf_present; @@ -295,11 +297,11 @@ struct mgmt_body_t { }; struct ctrl_control_wrapper_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t addr1[IEEE802_11_ADDR1_LEN]; - uint16_t carried_fc[IEEE802_11_CARRIED_FC_LEN]; - uint16_t ht_control[IEEE802_11_HT_CONTROL_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr addr1; + nd_uint16_t carried_fc[IEEE802_11_CARRIED_FC_LEN]; + nd_uint16_t ht_control[IEEE802_11_HT_CONTROL_LEN]; }; #define CTRL_CONTROL_WRAPPER_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ @@ -308,76 +310,76 @@ struct ctrl_control_wrapper_hdr_t { IEEE802_11_HT_CONTROL_LEN) struct ctrl_rts_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; - uint8_t ta[IEEE802_11_TA_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; + nd_mac_addr ta; }; #define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ IEEE802_11_RA_LEN+IEEE802_11_TA_LEN) struct ctrl_cts_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; }; #define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) struct ctrl_ack_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; }; #define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) struct ctrl_ps_poll_hdr_t { - uint16_t fc; - uint16_t aid; - uint8_t bssid[IEEE802_11_BSSID_LEN]; - uint8_t ta[IEEE802_11_TA_LEN]; + nd_uint16_t fc; + nd_uint16_t aid; + nd_mac_addr bssid; + nd_mac_addr ta; }; #define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\ IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN) struct ctrl_end_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; - uint8_t bssid[IEEE802_11_BSSID_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; + nd_mac_addr bssid; }; #define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN) struct ctrl_end_ack_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; - uint8_t bssid[IEEE802_11_BSSID_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; + nd_mac_addr bssid; }; #define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN) struct ctrl_ba_hdr_t { - uint16_t fc; - uint16_t duration; - uint8_t ra[IEEE802_11_RA_LEN]; + nd_uint16_t fc; + nd_uint16_t duration; + nd_mac_addr ra; }; #define CTRL_BA_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN) struct ctrl_bar_hdr_t { - uint16_t fc; - uint16_t dur; - uint8_t ra[IEEE802_11_RA_LEN]; - uint8_t ta[IEEE802_11_TA_LEN]; - uint16_t ctl; - uint16_t seq; + nd_uint16_t fc; + nd_uint16_t dur; + nd_mac_addr ra; + nd_mac_addr ta; + nd_uint16_t ctl; + nd_uint16_t seq; }; #define CTRL_BAR_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\ @@ -385,750 +387,446 @@ struct ctrl_bar_hdr_t { IEEE802_11_CTL_LEN+IEEE802_11_SEQ_LEN) struct meshcntl_t { - uint8_t flags; - uint8_t ttl; - uint8_t seq[4]; - uint8_t addr4[6]; - uint8_t addr5[6]; - uint8_t addr6[6]; + nd_uint8_t flags; + nd_uint8_t ttl; + nd_uint32_t seq; + nd_mac_addr addr4; + nd_mac_addr addr5; + nd_mac_addr addr6; }; #define IV_IV(iv) ((iv) & 0xFFFFFF) #define IV_PAD(iv) (((iv) >> 24) & 0x3F) #define IV_KEYID(iv) (((iv) >> 30) & 0x03) -/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */ -/* NetBSD: ieee802_11_radio.h,v 1.2 2006/02/26 03:04:03 dyoung Exp */ +#define PRINT_SSID(p) \ + if (p.ssid_present) { \ + ND_PRINT(" ("); \ + fn_print_str(ndo, p.ssid.ssid); \ + ND_PRINT(")"); \ + } -/*- - * Copyright (c) 2003, 2004 David Young. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The name of David Young may not be used to endorse or promote - * products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID - * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED - * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY - * OF SUCH DAMAGE. - */ +#define PRINT_RATE(_sep, _r, _suf) \ + ND_PRINT("%s%2.1f%s", _sep, (.5 * ((_r) & 0x7f)), _suf) +#define PRINT_RATES(p) \ + if (p.rates_present) { \ + int z; \ + const char *sep = " ["; \ + for (z = 0; z < p.rates.length ; z++) { \ + PRINT_RATE(sep, p.rates.rate[z], \ + (p.rates.rate[z] & 0x80 ? "*" : "")); \ + sep = " "; \ + } \ + if (p.rates.length != 0) \ + ND_PRINT(" Mbit]"); \ + } -/* A generic radio capture format is desirable. It must be - * rigidly defined (e.g., units for fields should be given), - * and easily extensible. - * - * The following is an extensible radio capture format. It is - * based on a bitmap indicating which fields are present. - * - * I am trying to describe precisely what the application programmer - * should expect in the following, and for that reason I tell the - * units and origin of each measurement (where it applies), or else I - * use sufficiently weaselly language ("is a monotonically nondecreasing - * function of...") that I cannot set false expectations for lawyerly - * readers. - */ +#define PRINT_DS_CHANNEL(p) \ + if (p.ds_present) \ + ND_PRINT(" CH: %u", p.ds.channel); \ + ND_PRINT("%s", \ + CAPABILITY_PRIVACY(p.capability_info) ? ", PRIVACY" : ""); -/* - * The radio capture header precedes the 802.11 header. - * - * Note well: all radiotap fields are little-endian. - */ -struct ieee80211_radiotap_header { - uint8_t it_version; /* Version 0. Only increases - * for drastic changes, - * introduction of compatible - * new fields does not count. - */ - uint8_t it_pad; - uint16_t it_len; /* length of the whole - * header in bytes, including - * it_version, it_pad, - * it_len, and data fields. - */ - uint32_t it_present; /* A bitmap telling which - * fields are present. Set bit 31 - * (0x80000000) to extend the - * bitmap by another 32 bits. - * Additional extensions are made - * by setting bit 31. - */ -}; +#define MAX_MCS_INDEX 76 -/* Name Data type Units - * ---- --------- ----- - * - * IEEE80211_RADIOTAP_TSFT uint64_t microseconds - * - * Value in microseconds of the MAC's 64-bit 802.11 Time - * Synchronization Function timer when the first bit of the - * MPDU arrived at the MAC. For received frames, only. - * - * IEEE80211_RADIOTAP_CHANNEL 2 x uint16_t MHz, bitmap - * - * Tx/Rx frequency in MHz, followed by flags (see below). - * Note that IEEE80211_RADIOTAP_XCHANNEL must be used to - * represent an HT channel as there is not enough room in - * the flags word. - * - * IEEE80211_RADIOTAP_FHSS uint16_t see below - * - * For frequency-hopping radios, the hop set (first byte) - * and pattern (second byte). - * - * IEEE80211_RADIOTAP_RATE uint8_t 500kb/s or index - * - * Tx/Rx data rate. If bit 0x80 is set then it represents an - * an MCS index and not an IEEE rate. - * - * IEEE80211_RADIOTAP_DBM_ANTSIGNAL int8_t decibels from - * one milliwatt (dBm) - * - * RF signal power at the antenna, decibel difference from - * one milliwatt. - * - * IEEE80211_RADIOTAP_DBM_ANTNOISE int8_t decibels from - * one milliwatt (dBm) - * - * RF noise power at the antenna, decibel difference from one - * milliwatt. - * - * IEEE80211_RADIOTAP_DB_ANTSIGNAL uint8_t decibel (dB) - * - * RF signal power at the antenna, decibel difference from an - * arbitrary, fixed reference. - * - * IEEE80211_RADIOTAP_DB_ANTNOISE uint8_t decibel (dB) - * - * RF noise power at the antenna, decibel difference from an - * arbitrary, fixed reference point. - * - * IEEE80211_RADIOTAP_LOCK_QUALITY uint16_t unitless - * - * Quality of Barker code lock. Unitless. Monotonically - * nondecreasing with "better" lock strength. Called "Signal - * Quality" in datasheets. (Is there a standard way to measure - * this?) - * - * IEEE80211_RADIOTAP_TX_ATTENUATION uint16_t unitless - * - * Transmit power expressed as unitless distance from max - * power set at factory calibration. 0 is max power. - * Monotonically nondecreasing with lower power levels. - * - * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t decibels (dB) - * - * Transmit power expressed as decibel distance from max power - * set at factory calibration. 0 is max power. Monotonically - * nondecreasing with lower power levels. - * - * IEEE80211_RADIOTAP_DBM_TX_POWER int8_t decibels from - * one milliwatt (dBm) - * - * Transmit power expressed as dBm (decibels from a 1 milliwatt - * reference). This is the absolute power level measured at - * the antenna port. - * - * IEEE80211_RADIOTAP_FLAGS uint8_t bitmap - * - * Properties of transmitted and received frames. See flags - * defined below. - * - * IEEE80211_RADIOTAP_ANTENNA uint8_t antenna index - * - * Unitless indication of the Rx/Tx antenna for this packet. - * The first antenna is antenna 0. - * - * IEEE80211_RADIOTAP_RX_FLAGS uint16_t bitmap - * - * Properties of received frames. See flags defined below. - * - * IEEE80211_RADIOTAP_XCHANNEL uint32_t bitmap - * uint16_t MHz - * uint8_t channel number - * uint8_t .5 dBm - * - * Extended channel specification: flags (see below) followed by - * frequency in MHz, the corresponding IEEE channel number, and - * finally the maximum regulatory transmit power cap in .5 dBm - * units. This property supersedes IEEE80211_RADIOTAP_CHANNEL - * and only one of the two should be present. - * - * IEEE80211_RADIOTAP_MCS uint8_t known - * uint8_t flags - * uint8_t mcs - * - * Bitset indicating which fields have known values, followed - * by bitset of flag values, followed by the MCS rate index as - * in IEEE 802.11n. +/* + * Indices are: * - * IEEE80211_RADIOTAP_VENDOR_NAMESPACE - * uint8_t OUI[3] - * uint8_t subspace - * uint16_t length + * the MCS index (0-76); * - * The Vendor Namespace Field contains three sub-fields. The first - * sub-field is 3 bytes long. It contains the vendor's IEEE 802 - * Organizationally Unique Identifier (OUI). The fourth byte is a - * vendor-specific "namespace selector." + * 0 for 20 MHz, 1 for 40 MHz; * + * 0 for a long guard interval, 1 for a short guard interval. */ -enum ieee80211_radiotap_type { - IEEE80211_RADIOTAP_TSFT = 0, - IEEE80211_RADIOTAP_FLAGS = 1, - IEEE80211_RADIOTAP_RATE = 2, - IEEE80211_RADIOTAP_CHANNEL = 3, - IEEE80211_RADIOTAP_FHSS = 4, - IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, - IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, - IEEE80211_RADIOTAP_LOCK_QUALITY = 7, - IEEE80211_RADIOTAP_TX_ATTENUATION = 8, - IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, - IEEE80211_RADIOTAP_DBM_TX_POWER = 10, - IEEE80211_RADIOTAP_ANTENNA = 11, - IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, - IEEE80211_RADIOTAP_DB_ANTNOISE = 13, - IEEE80211_RADIOTAP_RX_FLAGS = 14, - /* NB: gap for netbsd definitions */ - IEEE80211_RADIOTAP_XCHANNEL = 18, - IEEE80211_RADIOTAP_MCS = 19, - IEEE80211_RADIOTAP_NAMESPACE = 29, - IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, - IEEE80211_RADIOTAP_EXT = 31 -}; +static const float ieee80211_float_htrates[MAX_MCS_INDEX+1][2][2] = { + /* MCS 0 */ + { /* 20 Mhz */ { 6.5f, /* SGI */ 7.2f, }, + /* 40 Mhz */ { 13.5f, /* SGI */ 15.0f, }, + }, -/* channel attributes */ -#define IEEE80211_CHAN_TURBO 0x00010 /* Turbo channel */ -#define IEEE80211_CHAN_CCK 0x00020 /* CCK channel */ -#define IEEE80211_CHAN_OFDM 0x00040 /* OFDM channel */ -#define IEEE80211_CHAN_2GHZ 0x00080 /* 2 GHz spectrum channel. */ -#define IEEE80211_CHAN_5GHZ 0x00100 /* 5 GHz spectrum channel */ -#define IEEE80211_CHAN_PASSIVE 0x00200 /* Only passive scan allowed */ -#define IEEE80211_CHAN_DYN 0x00400 /* Dynamic CCK-OFDM channel */ -#define IEEE80211_CHAN_GFSK 0x00800 /* GFSK channel (FHSS PHY) */ -#define IEEE80211_CHAN_GSM 0x01000 /* 900 MHz spectrum channel */ -#define IEEE80211_CHAN_STURBO 0x02000 /* 11a static turbo channel only */ -#define IEEE80211_CHAN_HALF 0x04000 /* Half rate channel */ -#define IEEE80211_CHAN_QUARTER 0x08000 /* Quarter rate channel */ -#define IEEE80211_CHAN_HT20 0x10000 /* HT 20 channel */ -#define IEEE80211_CHAN_HT40U 0x20000 /* HT 40 channel w/ ext above */ -#define IEEE80211_CHAN_HT40D 0x40000 /* HT 40 channel w/ ext below */ + /* MCS 1 */ + { /* 20 Mhz */ { 13.0f, /* SGI */ 14.4f, }, + /* 40 Mhz */ { 27.0f, /* SGI */ 30.0f, }, + }, -/* Useful combinations of channel characteristics, borrowed from Ethereal */ -#define IEEE80211_CHAN_A \ - (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM) -#define IEEE80211_CHAN_B \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK) -#define IEEE80211_CHAN_G \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN) -#define IEEE80211_CHAN_TA \ - (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO) -#define IEEE80211_CHAN_TG \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN | IEEE80211_CHAN_TURBO) + /* MCS 2 */ + { /* 20 Mhz */ { 19.5f, /* SGI */ 21.7f, }, + /* 40 Mhz */ { 40.5f, /* SGI */ 45.0f, }, + }, - -/* For IEEE80211_RADIOTAP_FLAGS */ -#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received - * during CFP - */ -#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received - * with short - * preamble - */ -#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received - * with WEP encryption - */ -#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received - * with fragmentation - */ -#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ -#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between - * 802.11 header and payload - * (to 32-bit boundary) - */ -#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* does not pass FCS check */ - -/* For IEEE80211_RADIOTAP_RX_FLAGS */ -#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001 /* frame failed crc check */ -#define IEEE80211_RADIOTAP_F_RX_PLCP_CRC 0x0002 /* frame failed PLCP CRC check */ - -/* For IEEE80211_RADIOTAP_MCS known */ -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN 0x01 -#define IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN 0x02 /* MCS index field */ -#define IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN 0x04 -#define IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN 0x08 -#define IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN 0x10 -#define IEEE80211_RADIOTAP_MCS_STBC_KNOWN 0x20 - -/* For IEEE80211_RADIOTAP_MCS flags */ -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK 0x03 -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20 0 -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 1 -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20L 2 -#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20U 3 -#define IEEE80211_RADIOTAP_MCS_SHORT_GI 0x04 /* short guard interval */ -#define IEEE80211_RADIOTAP_MCS_HT_GREENFIELD 0x08 -#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10 -#define IEEE80211_RADIOTAP_MCS_STBC_MASK 0x60 -#define IEEE80211_RADIOTAP_MCS_STBC_1 1 -#define IEEE80211_RADIOTAP_MCS_STBC_2 2 -#define IEEE80211_RADIOTAP_MCS_STBC_3 3 -#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5 - -static const char tstr[] = "[|802.11]"; - -/* Radiotap state */ -/* This is used to save state when parsing/processing parameters */ -struct radiotap_state -{ - uint32_t present; - - uint8_t rate; -}; - -#define PRINT_SSID(p) \ - if (p.ssid_present) { \ - ND_PRINT((ndo, " (")); \ - fn_print(ndo, p.ssid.ssid, NULL); \ - ND_PRINT((ndo, ")")); \ - } - -#define PRINT_RATE(_sep, _r, _suf) \ - ND_PRINT((ndo, "%s%2.1f%s", _sep, (.5 * ((_r) & 0x7f)), _suf)) -#define PRINT_RATES(p) \ - if (p.rates_present) { \ - int z; \ - const char *sep = " ["; \ - for (z = 0; z < p.rates.length ; z++) { \ - PRINT_RATE(sep, p.rates.rate[z], \ - (p.rates.rate[z] & 0x80 ? "*" : "")); \ - sep = " "; \ - } \ - if (p.rates.length != 0) \ - ND_PRINT((ndo, " Mbit]")); \ - } - -#define PRINT_DS_CHANNEL(p) \ - if (p.ds_present) \ - ND_PRINT((ndo, " CH: %u", p.ds.channel)); \ - ND_PRINT((ndo, "%s", \ - CAPABILITY_PRIVACY(p.capability_info) ? ", PRIVACY" : "")); - -#define MAX_MCS_INDEX 76 - -/* - * Indices are: - * - * the MCS index (0-76); - * - * 0 for 20 MHz, 1 for 40 MHz; - * - * 0 for a long guard interval, 1 for a short guard interval. - */ -static const float ieee80211_float_htrates[MAX_MCS_INDEX+1][2][2] = { - /* MCS 0 */ - { /* 20 Mhz */ { 6.5, /* SGI */ 7.2, }, - /* 40 Mhz */ { 13.5, /* SGI */ 15.0, }, - }, - - /* MCS 1 */ - { /* 20 Mhz */ { 13.0, /* SGI */ 14.4, }, - /* 40 Mhz */ { 27.0, /* SGI */ 30.0, }, - }, - - /* MCS 2 */ - { /* 20 Mhz */ { 19.5, /* SGI */ 21.7, }, - /* 40 Mhz */ { 40.5, /* SGI */ 45.0, }, - }, - - /* MCS 3 */ - { /* 20 Mhz */ { 26.0, /* SGI */ 28.9, }, - /* 40 Mhz */ { 54.0, /* SGI */ 60.0, }, - }, + /* MCS 3 */ + { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, }, + /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, }, + }, /* MCS 4 */ - { /* 20 Mhz */ { 39.0, /* SGI */ 43.3, }, - /* 40 Mhz */ { 81.0, /* SGI */ 90.0, }, + { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, }, + /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, }, }, /* MCS 5 */ - { /* 20 Mhz */ { 52.0, /* SGI */ 57.8, }, - /* 40 Mhz */ { 108.0, /* SGI */ 120.0, }, + { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, }, + /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, }, }, /* MCS 6 */ - { /* 20 Mhz */ { 58.5, /* SGI */ 65.0, }, - /* 40 Mhz */ { 121.5, /* SGI */ 135.0, }, + { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, }, + /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, }, }, /* MCS 7 */ - { /* 20 Mhz */ { 65.0, /* SGI */ 72.2, }, - /* 40 Mhz */ { 135.0, /* SGI */ 150.0, }, + { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, }, + /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, }, }, /* MCS 8 */ - { /* 20 Mhz */ { 13.0, /* SGI */ 14.4, }, - /* 40 Mhz */ { 27.0, /* SGI */ 30.0, }, + { /* 20 Mhz */ { 13.0f, /* SGI */ 14.4f, }, + /* 40 Mhz */ { 27.0f, /* SGI */ 30.0f, }, }, /* MCS 9 */ - { /* 20 Mhz */ { 26.0, /* SGI */ 28.9, }, - /* 40 Mhz */ { 54.0, /* SGI */ 60.0, }, + { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, }, + /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, }, }, /* MCS 10 */ - { /* 20 Mhz */ { 39.0, /* SGI */ 43.3, }, - /* 40 Mhz */ { 81.0, /* SGI */ 90.0, }, + { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, }, + /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, }, }, /* MCS 11 */ - { /* 20 Mhz */ { 52.0, /* SGI */ 57.8, }, - /* 40 Mhz */ { 108.0, /* SGI */ 120.0, }, + { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, }, + /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, }, }, /* MCS 12 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 13 */ - { /* 20 Mhz */ { 104.0, /* SGI */ 115.6, }, - /* 40 Mhz */ { 216.0, /* SGI */ 240.0, }, + { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, }, + /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, }, }, /* MCS 14 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 15 */ - { /* 20 Mhz */ { 130.0, /* SGI */ 144.4, }, - /* 40 Mhz */ { 270.0, /* SGI */ 300.0, }, + { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, }, + /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, }, }, /* MCS 16 */ - { /* 20 Mhz */ { 19.5, /* SGI */ 21.7, }, - /* 40 Mhz */ { 40.5, /* SGI */ 45.0, }, + { /* 20 Mhz */ { 19.5f, /* SGI */ 21.7f, }, + /* 40 Mhz */ { 40.5f, /* SGI */ 45.0f, }, }, /* MCS 17 */ - { /* 20 Mhz */ { 39.0, /* SGI */ 43.3, }, - /* 40 Mhz */ { 81.0, /* SGI */ 90.0, }, + { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, }, + /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, }, }, /* MCS 18 */ - { /* 20 Mhz */ { 58.5, /* SGI */ 65.0, }, - /* 40 Mhz */ { 121.5, /* SGI */ 135.0, }, + { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, }, + /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, }, }, /* MCS 19 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 20 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 21 */ - { /* 20 Mhz */ { 156.0, /* SGI */ 173.3, }, - /* 40 Mhz */ { 324.0, /* SGI */ 360.0, }, + { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, }, + /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, }, }, /* MCS 22 */ - { /* 20 Mhz */ { 175.5, /* SGI */ 195.0, }, - /* 40 Mhz */ { 364.5, /* SGI */ 405.0, }, + { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, }, + /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, }, }, /* MCS 23 */ - { /* 20 Mhz */ { 195.0, /* SGI */ 216.7, }, - /* 40 Mhz */ { 405.0, /* SGI */ 450.0, }, + { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, }, + /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, }, }, /* MCS 24 */ - { /* 20 Mhz */ { 26.0, /* SGI */ 28.9, }, - /* 40 Mhz */ { 54.0, /* SGI */ 60.0, }, + { /* 20 Mhz */ { 26.0f, /* SGI */ 28.9f, }, + /* 40 Mhz */ { 54.0f, /* SGI */ 60.0f, }, }, /* MCS 25 */ - { /* 20 Mhz */ { 52.0, /* SGI */ 57.8, }, - /* 40 Mhz */ { 108.0, /* SGI */ 120.0, }, + { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, }, + /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, }, }, /* MCS 26 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 27 */ - { /* 20 Mhz */ { 104.0, /* SGI */ 115.6, }, - /* 40 Mhz */ { 216.0, /* SGI */ 240.0, }, + { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, }, + /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, }, }, /* MCS 28 */ - { /* 20 Mhz */ { 156.0, /* SGI */ 173.3, }, - /* 40 Mhz */ { 324.0, /* SGI */ 360.0, }, + { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, }, + /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, }, }, /* MCS 29 */ - { /* 20 Mhz */ { 208.0, /* SGI */ 231.1, }, - /* 40 Mhz */ { 432.0, /* SGI */ 480.0, }, + { /* 20 Mhz */ { 208.0f, /* SGI */ 231.1f, }, + /* 40 Mhz */ { 432.0f, /* SGI */ 480.0f, }, }, /* MCS 30 */ - { /* 20 Mhz */ { 234.0, /* SGI */ 260.0, }, - /* 40 Mhz */ { 486.0, /* SGI */ 540.0, }, + { /* 20 Mhz */ { 234.0f, /* SGI */ 260.0f, }, + /* 40 Mhz */ { 486.0f, /* SGI */ 540.0f, }, }, /* MCS 31 */ - { /* 20 Mhz */ { 260.0, /* SGI */ 288.9, }, - /* 40 Mhz */ { 540.0, /* SGI */ 600.0, }, + { /* 20 Mhz */ { 260.0f, /* SGI */ 288.9f, }, + /* 40 Mhz */ { 540.0f, /* SGI */ 600.0f, }, }, /* MCS 32 */ - { /* 20 Mhz */ { 0.0, /* SGI */ 0.0, }, /* not valid */ - /* 40 Mhz */ { 6.0, /* SGI */ 6.7, }, + { /* 20 Mhz */ { 0.0f, /* SGI */ 0.0f, }, /* not valid */ + /* 40 Mhz */ { 6.0f, /* SGI */ 6.7f, }, }, /* MCS 33 */ - { /* 20 Mhz */ { 39.0, /* SGI */ 43.3, }, - /* 40 Mhz */ { 81.0, /* SGI */ 90.0, }, + { /* 20 Mhz */ { 39.0f, /* SGI */ 43.3f, }, + /* 40 Mhz */ { 81.0f, /* SGI */ 90.0f, }, }, /* MCS 34 */ - { /* 20 Mhz */ { 52.0, /* SGI */ 57.8, }, - /* 40 Mhz */ { 108.0, /* SGI */ 120.0, }, + { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, }, + /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, }, }, /* MCS 35 */ - { /* 20 Mhz */ { 65.0, /* SGI */ 72.2, }, - /* 40 Mhz */ { 135.0, /* SGI */ 150.0, }, + { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, }, + /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, }, }, /* MCS 36 */ - { /* 20 Mhz */ { 58.5, /* SGI */ 65.0, }, - /* 40 Mhz */ { 121.5, /* SGI */ 135.0, }, + { /* 20 Mhz */ { 58.5f, /* SGI */ 65.0f, }, + /* 40 Mhz */ { 121.5f, /* SGI */ 135.0f, }, }, /* MCS 37 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 38 */ - { /* 20 Mhz */ { 97.5, /* SGI */ 108.3, }, - /* 40 Mhz */ { 202.5, /* SGI */ 225.0, }, + { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, }, + /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, }, }, /* MCS 39 */ - { /* 20 Mhz */ { 52.0, /* SGI */ 57.8, }, - /* 40 Mhz */ { 108.0, /* SGI */ 120.0, }, + { /* 20 Mhz */ { 52.0f, /* SGI */ 57.8f, }, + /* 40 Mhz */ { 108.0f, /* SGI */ 120.0f, }, }, /* MCS 40 */ - { /* 20 Mhz */ { 65.0, /* SGI */ 72.2, }, - /* 40 Mhz */ { 135.0, /* SGI */ 150.0, }, + { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, }, + /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, }, }, /* MCS 41 */ - { /* 20 Mhz */ { 65.0, /* SGI */ 72.2, }, - /* 40 Mhz */ { 135.0, /* SGI */ 150.0, }, + { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, }, + /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, }, }, /* MCS 42 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 43 */ - { /* 20 Mhz */ { 91.0, /* SGI */ 101.1, }, - /* 40 Mhz */ { 189.0, /* SGI */ 210.0, }, + { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, }, + /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, }, }, /* MCS 44 */ - { /* 20 Mhz */ { 91.0, /* SGI */ 101.1, }, - /* 40 Mhz */ { 189.0, /* SGI */ 210.0, }, + { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, }, + /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, }, }, /* MCS 45 */ - { /* 20 Mhz */ { 104.0, /* SGI */ 115.6, }, - /* 40 Mhz */ { 216.0, /* SGI */ 240.0, }, + { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, }, + /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, }, }, /* MCS 46 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 47 */ - { /* 20 Mhz */ { 97.5, /* SGI */ 108.3, }, - /* 40 Mhz */ { 202.5, /* SGI */ 225.0, }, + { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, }, + /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, }, }, /* MCS 48 */ - { /* 20 Mhz */ { 97.5, /* SGI */ 108.3, }, - /* 40 Mhz */ { 202.5, /* SGI */ 225.0, }, + { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, }, + /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, }, }, /* MCS 49 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 50 */ - { /* 20 Mhz */ { 136.5, /* SGI */ 151.7, }, - /* 40 Mhz */ { 283.5, /* SGI */ 315.0, }, + { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, }, + /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, }, }, /* MCS 51 */ - { /* 20 Mhz */ { 136.5, /* SGI */ 151.7, }, - /* 40 Mhz */ { 283.5, /* SGI */ 315.0, }, + { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, }, + /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, }, }, /* MCS 52 */ - { /* 20 Mhz */ { 156.0, /* SGI */ 173.3, }, - /* 40 Mhz */ { 324.0, /* SGI */ 360.0, }, + { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, }, + /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, }, }, /* MCS 53 */ - { /* 20 Mhz */ { 65.0, /* SGI */ 72.2, }, - /* 40 Mhz */ { 135.0, /* SGI */ 150.0, }, + { /* 20 Mhz */ { 65.0f, /* SGI */ 72.2f, }, + /* 40 Mhz */ { 135.0f, /* SGI */ 150.0f, }, }, /* MCS 54 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 55 */ - { /* 20 Mhz */ { 91.0, /* SGI */ 101.1, }, - /* 40 Mhz */ { 189.0, /* SGI */ 210.0, }, + { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, }, + /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, }, }, /* MCS 56 */ - { /* 20 Mhz */ { 78.0, /* SGI */ 86.7, }, - /* 40 Mhz */ { 162.0, /* SGI */ 180.0, }, + { /* 20 Mhz */ { 78.0f, /* SGI */ 86.7f, }, + /* 40 Mhz */ { 162.0f, /* SGI */ 180.0f, }, }, /* MCS 57 */ - { /* 20 Mhz */ { 91.0, /* SGI */ 101.1, }, - /* 40 Mhz */ { 189.0, /* SGI */ 210.0, }, + { /* 20 Mhz */ { 91.0f, /* SGI */ 101.1f, }, + /* 40 Mhz */ { 189.0f, /* SGI */ 210.0f, }, }, /* MCS 58 */ - { /* 20 Mhz */ { 104.0, /* SGI */ 115.6, }, - /* 40 Mhz */ { 216.0, /* SGI */ 240.0, }, + { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, }, + /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, }, }, /* MCS 59 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 60 */ - { /* 20 Mhz */ { 104.0, /* SGI */ 115.6, }, - /* 40 Mhz */ { 216.0, /* SGI */ 240.0, }, + { /* 20 Mhz */ { 104.0f, /* SGI */ 115.6f, }, + /* 40 Mhz */ { 216.0f, /* SGI */ 240.0f, }, }, /* MCS 61 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 62 */ - { /* 20 Mhz */ { 130.0, /* SGI */ 144.4, }, - /* 40 Mhz */ { 270.0, /* SGI */ 300.0, }, + { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, }, + /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, }, }, /* MCS 63 */ - { /* 20 Mhz */ { 130.0, /* SGI */ 144.4, }, - /* 40 Mhz */ { 270.0, /* SGI */ 300.0, }, + { /* 20 Mhz */ { 130.0f, /* SGI */ 144.4f, }, + /* 40 Mhz */ { 270.0f, /* SGI */ 300.0f, }, }, /* MCS 64 */ - { /* 20 Mhz */ { 143.0, /* SGI */ 158.9, }, - /* 40 Mhz */ { 297.0, /* SGI */ 330.0, }, + { /* 20 Mhz */ { 143.0f, /* SGI */ 158.9f, }, + /* 40 Mhz */ { 297.0f, /* SGI */ 330.0f, }, }, /* MCS 65 */ - { /* 20 Mhz */ { 97.5, /* SGI */ 108.3, }, - /* 40 Mhz */ { 202.5, /* SGI */ 225.0, }, + { /* 20 Mhz */ { 97.5f, /* SGI */ 108.3f, }, + /* 40 Mhz */ { 202.5f, /* SGI */ 225.0f, }, }, /* MCS 66 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 67 */ - { /* 20 Mhz */ { 136.5, /* SGI */ 151.7, }, - /* 40 Mhz */ { 283.5, /* SGI */ 315.0, }, + { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, }, + /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, }, }, /* MCS 68 */ - { /* 20 Mhz */ { 117.0, /* SGI */ 130.0, }, - /* 40 Mhz */ { 243.0, /* SGI */ 270.0, }, + { /* 20 Mhz */ { 117.0f, /* SGI */ 130.0f, }, + /* 40 Mhz */ { 243.0f, /* SGI */ 270.0f, }, }, /* MCS 69 */ - { /* 20 Mhz */ { 136.5, /* SGI */ 151.7, }, - /* 40 Mhz */ { 283.5, /* SGI */ 315.0, }, + { /* 20 Mhz */ { 136.5f, /* SGI */ 151.7f, }, + /* 40 Mhz */ { 283.5f, /* SGI */ 315.0f, }, }, /* MCS 70 */ - { /* 20 Mhz */ { 156.0, /* SGI */ 173.3, }, - /* 40 Mhz */ { 324.0, /* SGI */ 360.0, }, + { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, }, + /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, }, }, /* MCS 71 */ - { /* 20 Mhz */ { 175.5, /* SGI */ 195.0, }, - /* 40 Mhz */ { 364.5, /* SGI */ 405.0, }, + { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, }, + /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, }, }, /* MCS 72 */ - { /* 20 Mhz */ { 156.0, /* SGI */ 173.3, }, - /* 40 Mhz */ { 324.0, /* SGI */ 360.0, }, + { /* 20 Mhz */ { 156.0f, /* SGI */ 173.3f, }, + /* 40 Mhz */ { 324.0f, /* SGI */ 360.0f, }, }, /* MCS 73 */ - { /* 20 Mhz */ { 175.5, /* SGI */ 195.0, }, - /* 40 Mhz */ { 364.5, /* SGI */ 405.0, }, + { /* 20 Mhz */ { 175.5f, /* SGI */ 195.0f, }, + /* 40 Mhz */ { 364.5f, /* SGI */ 405.0f, }, }, /* MCS 74 */ - { /* 20 Mhz */ { 195.0, /* SGI */ 216.7, }, - /* 40 Mhz */ { 405.0, /* SGI */ 450.0, }, + { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, }, + /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, }, }, /* MCS 75 */ - { /* 20 Mhz */ { 195.0, /* SGI */ 216.7, }, - /* 40 Mhz */ { 405.0, /* SGI */ 450.0, }, + { /* 20 Mhz */ { 195.0f, /* SGI */ 216.7f, }, + /* 40 Mhz */ { 405.0f, /* SGI */ 450.0f, }, }, /* MCS 76 */ - { /* 20 Mhz */ { 214.5, /* SGI */ 238.3, }, - /* 40 Mhz */ { 445.5, /* SGI */ 495.0, }, + { /* 20 Mhz */ { 214.5f, /* SGI */ 238.3f, }, + /* 40 Mhz */ { 445.5f, /* SGI */ 495.0f, }, }, }; static const char *auth_alg_text[]={"Open System","Shared Key","EAP"}; -#define NUM_AUTH_ALGS (sizeof auth_alg_text / sizeof auth_alg_text[0]) +#define NUM_AUTH_ALGS (sizeof(auth_alg_text) / sizeof(auth_alg_text[0])) static const char *status_text[] = { "Successful", /* 0 */ @@ -1142,7 +840,7 @@ static const char *status_text[] = { "Reserved", /* 8 */ "Reserved", /* 9 */ "Cannot Support all requested capabilities in the Capability " - "Information field", /* 10 */ + "Information field", /* 10 */ "Reassociation denied due to inability to confirm that association " "exists", /* 11 */ "Association denied due to reason outside the scope of the " @@ -1153,9 +851,9 @@ static const char *status_text[] = { "sequence number out of expected sequence", /* 14 */ "Authentication rejected because of challenge failure", /* 15 */ "Authentication rejected due to timeout waiting for next frame in " - "sequence", /* 16 */ + "sequence", /* 16 */ "Association denied because AP is unable to handle additional" - "associated stations", /* 17 */ + "associated stations", /* 17 */ "Association denied due to requesting station not supporting all of " "the data rates in BSSBasicRateSet parameter", /* 18 */ "Association denied due to requesting station not supporting " @@ -1210,12 +908,12 @@ static const char *status_text[] = { "The Destination STA is not a QSTA.", /* 50 */ }; -#define NUM_STATUSES (sizeof status_text / sizeof status_text[0]) +#define NUM_STATUSES (sizeof(status_text) / sizeof(status_text[0])) static const char *reason_text[] = { "Reserved", /* 0 */ "Unspecified reason", /* 1 */ - "Previous authentication no longer valid", /* 2 */ + "Previous authentication no longer valid", /* 2 */ "Deauthenticated because sending station is leaving (or has left) " "IBSS or ESS", /* 3 */ "Disassociated due to inactivity", /* 4 */ @@ -1258,7 +956,7 @@ static const char *reason_text[] = { "Disassociated because QoS AP lacks sufficient bandwidth for this " "QoS STA", /* 33 */ "Disassociated because of excessive number of frames that need to be " - "acknowledged, but are not acknowledged for AP transmissions " + "acknowledged, but are not acknowledged for AP transmissions " "and/or poor channel conditions", /* 34 */ "Disassociated because STA is transmitting outside the limits " "of its TXOPs", /* 35 */ @@ -1278,28 +976,29 @@ static const char *reason_text[] = { "Association denied due to requesting STA not supporting HT " "features", /* 46 */ }; -#define NUM_REASONS (sizeof reason_text / sizeof reason_text[0]) +#define NUM_REASONS (sizeof(reason_text) / sizeof(reason_text[0])) static int wep_print(netdissect_options *ndo, - const u_char *p) + const u_char *p) { uint32_t iv; - if (!ND_TTEST2(*p, IEEE802_11_IV_LEN + IEEE802_11_KID_LEN)) - return 0; - iv = EXTRACT_LE_32BITS(p); + ND_TCHECK_LEN(p, IEEE802_11_IV_LEN + IEEE802_11_KID_LEN); + iv = GET_LE_U_4(p); - ND_PRINT((ndo, " IV:%3x Pad %x KeyID %x", IV_IV(iv), IV_PAD(iv), - IV_KEYID(iv))); + ND_PRINT(" IV:%3x Pad %x KeyID %x", IV_IV(iv), IV_PAD(iv), + IV_KEYID(iv)); return 1; +trunc: + return 0; } static int parse_elements(netdissect_options *ndo, - struct mgmt_body_t *pbody, const u_char *p, int offset, - u_int length) + struct mgmt_body_t *pbody, const u_char *p, int offset, + u_int length) { u_int elementlen; struct ssid_t ssid; @@ -1321,19 +1020,17 @@ parse_elements(netdissect_options *ndo, while (length != 0) { /* Make sure we at least have the element ID and length. */ - if (!ND_TTEST2(*(p + offset), 2)) - return 0; + ND_TCHECK_2(p + offset); if (length < 2) - return 0; - elementlen = *(p + offset + 1); + goto trunc; + elementlen = GET_U_1(p + offset + 1); /* Make sure we have the entire element. */ - if (!ND_TTEST2(*(p + offset + 2), elementlen)) - return 0; + ND_TCHECK_LEN(p + offset + 2, elementlen); if (length < elementlen + 2) - return 0; + goto trunc; - switch (*(p + offset)) { + switch (GET_U_1(p + offset)) { case E_SSID: memcpy(&ssid, p + offset, 2); offset += 2; @@ -1341,10 +1038,6 @@ parse_elements(netdissect_options *ndo, if (ssid.length != 0) { if (ssid.length > sizeof(ssid.ssid) - 1) return 0; - if (!ND_TTEST2(*(p + offset), ssid.length)) - return 0; - if (length < ssid.length) - return 0; memcpy(&ssid.ssid, p + offset, ssid.length); offset += ssid.length; length -= ssid.length; @@ -1370,10 +1063,6 @@ parse_elements(netdissect_options *ndo, if (challenge.length > sizeof(challenge.text) - 1) return 0; - if (!ND_TTEST2(*(p + offset), challenge.length)) - return 0; - if (length < challenge.length) - return 0; memcpy(&challenge.text, p + offset, challenge.length); offset += challenge.length; @@ -1397,11 +1086,7 @@ parse_elements(netdissect_options *ndo, offset += 2; length -= 2; if (rates.length != 0) { - if (rates.length > sizeof rates.rate) - return 0; - if (!ND_TTEST2(*(p + offset), rates.length)) - return 0; - if (length < rates.length) + if (rates.length > sizeof(rates.rate)) return 0; memcpy(&rates.rate, p + offset, rates.length); offset += rates.length; @@ -1437,7 +1122,7 @@ parse_elements(netdissect_options *ndo, length -= ds.length; break; } - ds.channel = *(p + offset); + ds.channel = GET_U_1(p + offset); offset += 1; length -= 1; /* @@ -1480,19 +1165,18 @@ parse_elements(netdissect_options *ndo, memcpy(&tim, p + offset, 2); offset += 2; length -= 2; - if (tim.length <= 3) { + if (tim.length <= 3U) { offset += tim.length; length -= tim.length; break; } - if (tim.length - 3 > (int)sizeof tim.bitmap) + if (tim.length - 3U > sizeof(tim.bitmap)) return 0; memcpy(&tim.count, p + offset, 3); offset += 3; length -= 3; - memcpy(tim.bitmap, p + (tim.length - 3), - (tim.length - 3)); + memcpy(tim.bitmap, p + offset, tim.length - 3); offset += tim.length - 3; length -= tim.length - 3; /* @@ -1509,8 +1193,8 @@ parse_elements(netdissect_options *ndo, break; default: #if 0 - ND_PRINT((ndo, "(1) unhandled element_id (%d) ", - *(p + offset))); + ND_PRINT("(1) unhandled element_id (%u) ", + GET_U_1(p + offset)); #endif offset += 2 + elementlen; length -= 2 + elementlen; @@ -1520,6 +1204,8 @@ parse_elements(netdissect_options *ndo, /* No problems found. */ return 1; +trunc: + return 0; } /********************************************************************************* @@ -1528,7 +1214,7 @@ parse_elements(netdissect_options *ndo, static int handle_beacon(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1536,19 +1222,18 @@ handle_beacon(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + - IEEE802_11_CAPINFO_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + + IEEE802_11_CAPINFO_LEN); if (length < IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + IEEE802_11_CAPINFO_LEN) - return 0; + goto trunc; memcpy(&pbody.timestamp, p, IEEE802_11_TSTAMP_LEN); offset += IEEE802_11_TSTAMP_LEN; length -= IEEE802_11_TSTAMP_LEN; - pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset); + pbody.beacon_interval = GET_LE_U_2(p + offset); offset += IEEE802_11_BCNINT_LEN; length -= IEEE802_11_BCNINT_LEN; - pbody.capability_info = EXTRACT_LE_16BITS(p+offset); + pbody.capability_info = GET_LE_U_2(p + offset); offset += IEEE802_11_CAPINFO_LEN; length -= IEEE802_11_CAPINFO_LEN; @@ -1556,16 +1241,18 @@ handle_beacon(netdissect_options *ndo, PRINT_SSID(pbody); PRINT_RATES(pbody); - ND_PRINT((ndo, " %s", - CAPABILITY_ESS(pbody.capability_info) ? "ESS" : "IBSS")); + ND_PRINT(" %s", + CAPABILITY_ESS(pbody.capability_info) ? "ESS" : "IBSS"); PRINT_DS_CHANNEL(pbody); return ret; +trunc: + return 0; } static int handle_assoc_request(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1573,14 +1260,13 @@ handle_assoc_request(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN); if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN) - return 0; - pbody.capability_info = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.capability_info = GET_LE_U_2(p); offset += IEEE802_11_CAPINFO_LEN; length -= IEEE802_11_CAPINFO_LEN; - pbody.listen_interval = EXTRACT_LE_16BITS(p+offset); + pbody.listen_interval = GET_LE_U_2(p + offset); offset += IEEE802_11_LISTENINT_LEN; length -= IEEE802_11_LISTENINT_LEN; @@ -1589,11 +1275,13 @@ handle_assoc_request(netdissect_options *ndo, PRINT_SSID(pbody); PRINT_RATES(pbody); return ret; +trunc: + return 0; } static int handle_assoc_response(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1601,36 +1289,37 @@ handle_assoc_response(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN + - IEEE802_11_AID_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN + + IEEE802_11_AID_LEN); if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_STATUS_LEN + IEEE802_11_AID_LEN) - return 0; - pbody.capability_info = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.capability_info = GET_LE_U_2(p); offset += IEEE802_11_CAPINFO_LEN; length -= IEEE802_11_CAPINFO_LEN; - pbody.status_code = EXTRACT_LE_16BITS(p+offset); + pbody.status_code = GET_LE_U_2(p + offset); offset += IEEE802_11_STATUS_LEN; length -= IEEE802_11_STATUS_LEN; - pbody.aid = EXTRACT_LE_16BITS(p+offset); + pbody.aid = GET_LE_U_2(p + offset); offset += IEEE802_11_AID_LEN; length -= IEEE802_11_AID_LEN; ret = parse_elements(ndo, &pbody, p, offset, length); - ND_PRINT((ndo, " AID(%x) :%s: %s", ((uint16_t)(pbody.aid << 2 )) >> 2 , + ND_PRINT(" AID(%x) :%s: %s", ((uint16_t)(pbody.aid << 2 )) >> 2 , CAPABILITY_PRIVACY(pbody.capability_info) ? " PRIVACY " : "", (pbody.status_code < NUM_STATUSES ? status_text[pbody.status_code] - : "n/a"))); + : "n/a")); return ret; +trunc: + return 0; } static int handle_reassoc_request(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1638,16 +1327,15 @@ handle_reassoc_request(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN + - IEEE802_11_AP_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN + + IEEE802_11_AP_LEN); if (length < IEEE802_11_CAPINFO_LEN + IEEE802_11_LISTENINT_LEN + IEEE802_11_AP_LEN) - return 0; - pbody.capability_info = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.capability_info = GET_LE_U_2(p); offset += IEEE802_11_CAPINFO_LEN; length -= IEEE802_11_CAPINFO_LEN; - pbody.listen_interval = EXTRACT_LE_16BITS(p+offset); + pbody.listen_interval = GET_LE_U_2(p + offset); offset += IEEE802_11_LISTENINT_LEN; length -= IEEE802_11_LISTENINT_LEN; memcpy(&pbody.ap, p+offset, IEEE802_11_AP_LEN); @@ -1657,22 +1345,24 @@ handle_reassoc_request(netdissect_options *ndo, ret = parse_elements(ndo, &pbody, p, offset, length); PRINT_SSID(pbody); - ND_PRINT((ndo, " AP : %s", etheraddr_string(ndo, pbody.ap ))); + ND_PRINT(" AP : %s", etheraddr_string(ndo, pbody.ap )); return ret; +trunc: + return 0; } static int handle_reassoc_response(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { - /* Same as a Association Reponse */ + /* Same as a Association Response */ return handle_assoc_response(ndo, p, length); } static int handle_probe_request(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1690,7 +1380,7 @@ handle_probe_request(netdissect_options *ndo, static int handle_probe_response(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1698,19 +1388,18 @@ handle_probe_response(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + - IEEE802_11_CAPINFO_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + + IEEE802_11_CAPINFO_LEN); if (length < IEEE802_11_TSTAMP_LEN + IEEE802_11_BCNINT_LEN + IEEE802_11_CAPINFO_LEN) - return 0; + goto trunc; memcpy(&pbody.timestamp, p, IEEE802_11_TSTAMP_LEN); offset += IEEE802_11_TSTAMP_LEN; length -= IEEE802_11_TSTAMP_LEN; - pbody.beacon_interval = EXTRACT_LE_16BITS(p+offset); + pbody.beacon_interval = GET_LE_U_2(p + offset); offset += IEEE802_11_BCNINT_LEN; length -= IEEE802_11_BCNINT_LEN; - pbody.capability_info = EXTRACT_LE_16BITS(p+offset); + pbody.capability_info = GET_LE_U_2(p + offset); offset += IEEE802_11_CAPINFO_LEN; length -= IEEE802_11_CAPINFO_LEN; @@ -1721,6 +1410,8 @@ handle_probe_response(netdissect_options *ndo, PRINT_DS_CHANNEL(pbody); return ret; +trunc: + return 0; } static int @@ -1732,29 +1423,30 @@ handle_atim(void) static int handle_disassoc(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_REASON_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_REASON_LEN); if (length < IEEE802_11_REASON_LEN) - return 0; - pbody.reason_code = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.reason_code = GET_LE_U_2(p); - ND_PRINT((ndo, ": %s", + ND_PRINT(": %s", (pbody.reason_code < NUM_REASONS) ? reason_text[pbody.reason_code] - : "Reserved")); + : "Reserved"); return 1; +trunc: + return 0; } static int handle_auth(netdissect_options *ndo, - const u_char *p, u_int length) + const u_char *p, u_int length) { struct mgmt_body_t pbody; int offset = 0; @@ -1762,17 +1454,16 @@ handle_auth(netdissect_options *ndo, memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, 6)) - return 0; + ND_TCHECK_6(p); if (length < 6) - return 0; - pbody.auth_alg = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.auth_alg = GET_LE_U_2(p); offset += 2; length -= 2; - pbody.auth_trans_seq_num = EXTRACT_LE_16BITS(p + offset); + pbody.auth_trans_seq_num = GET_LE_U_2(p + offset); offset += 2; length -= 2; - pbody.status_code = EXTRACT_LE_16BITS(p + offset); + pbody.status_code = GET_LE_U_2(p + offset); offset += 2; length -= 2; @@ -1781,148 +1472,144 @@ handle_auth(netdissect_options *ndo, if ((pbody.auth_alg == 1) && ((pbody.auth_trans_seq_num == 2) || (pbody.auth_trans_seq_num == 3))) { - ND_PRINT((ndo, " (%s)-%x [Challenge Text] %s", + ND_PRINT(" (%s)-%x [Challenge Text] %s", (pbody.auth_alg < NUM_AUTH_ALGS) ? auth_alg_text[pbody.auth_alg] : "Reserved", pbody.auth_trans_seq_num, ((pbody.auth_trans_seq_num % 2) - ? ((pbody.status_code < NUM_STATUSES) + ? ((pbody.status_code < NUM_STATUSES) ? status_text[pbody.status_code] - : "n/a") : ""))); + : "n/a") : "")); return ret; } - ND_PRINT((ndo, " (%s)-%x: %s", + ND_PRINT(" (%s)-%x: %s", (pbody.auth_alg < NUM_AUTH_ALGS) ? auth_alg_text[pbody.auth_alg] : "Reserved", pbody.auth_trans_seq_num, (pbody.auth_trans_seq_num % 2) - ? ((pbody.status_code < NUM_STATUSES) + ? ((pbody.status_code < NUM_STATUSES) ? status_text[pbody.status_code] - : "n/a") - : "")); + : "n/a") + : ""); return ret; +trunc: + return 0; } static int handle_deauth(netdissect_options *ndo, - const uint8_t *src, const u_char *p, u_int length) + const uint8_t *src, const u_char *p, u_int length) { struct mgmt_body_t pbody; const char *reason = NULL; memset(&pbody, 0, sizeof(pbody)); - if (!ND_TTEST2(*p, IEEE802_11_REASON_LEN)) - return 0; + ND_TCHECK_LEN(p, IEEE802_11_REASON_LEN); if (length < IEEE802_11_REASON_LEN) - return 0; - pbody.reason_code = EXTRACT_LE_16BITS(p); + goto trunc; + pbody.reason_code = GET_LE_U_2(p); reason = (pbody.reason_code < NUM_REASONS) ? reason_text[pbody.reason_code] : "Reserved"; if (ndo->ndo_eflag) { - ND_PRINT((ndo, ": %s", reason)); + ND_PRINT(": %s", reason); } else { - ND_PRINT((ndo, " (%s): %s", etheraddr_string(ndo, src), reason)); + ND_PRINT(" (%s): %s", etheraddr_string(ndo, src), reason); } return 1; +trunc: + return 0; } #define PRINT_HT_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "TxChWidth")) : \ - (v) == 1 ? ND_PRINT((ndo, "MIMOPwrSave")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("TxChWidth"): \ + (v) == 1 ? ND_PRINT("MIMOPwrSave"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_BA_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "ADDBA Request")) : \ - (v) == 1 ? ND_PRINT((ndo, "ADDBA Response")) : \ - (v) == 2 ? ND_PRINT((ndo, "DELBA")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("ADDBA Request"): \ + (v) == 1 ? ND_PRINT("ADDBA Response"): \ + (v) == 2 ? ND_PRINT("DELBA"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_MESHLINK_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "Request")) : \ - (v) == 1 ? ND_PRINT((ndo, "Report")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("Request"): \ + (v) == 1 ? ND_PRINT("Report"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_MESHPEERING_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "Open")) : \ - (v) == 1 ? ND_PRINT((ndo, "Confirm")) : \ - (v) == 2 ? ND_PRINT((ndo, "Close")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("Open"): \ + (v) == 1 ? ND_PRINT("Confirm"): \ + (v) == 2 ? ND_PRINT("Close"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_MESHPATH_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "Request")) : \ - (v) == 1 ? ND_PRINT((ndo, "Report")) : \ - (v) == 2 ? ND_PRINT((ndo, "Error")) : \ - (v) == 3 ? ND_PRINT((ndo, "RootAnnouncement")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("Request"): \ + (v) == 1 ? ND_PRINT("Report"): \ + (v) == 2 ? ND_PRINT("Error"): \ + (v) == 3 ? ND_PRINT("RootAnnouncement"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_MESH_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "MeshLink")) : \ - (v) == 1 ? ND_PRINT((ndo, "HWMP")) : \ - (v) == 2 ? ND_PRINT((ndo, "Gate Announcement")) : \ - (v) == 3 ? ND_PRINT((ndo, "Congestion Control")) : \ - (v) == 4 ? ND_PRINT((ndo, "MCCA Setup Request")) : \ - (v) == 5 ? ND_PRINT((ndo, "MCCA Setup Reply")) : \ - (v) == 6 ? ND_PRINT((ndo, "MCCA Advertisement Request")) : \ - (v) == 7 ? ND_PRINT((ndo, "MCCA Advertisement")) : \ - (v) == 8 ? ND_PRINT((ndo, "MCCA Teardown")) : \ - (v) == 9 ? ND_PRINT((ndo, "TBTT Adjustment Request")) : \ - (v) == 10 ? ND_PRINT((ndo, "TBTT Adjustment Response")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("MeshLink"): \ + (v) == 1 ? ND_PRINT("HWMP"): \ + (v) == 2 ? ND_PRINT("Gate Announcement"): \ + (v) == 3 ? ND_PRINT("Congestion Control"): \ + (v) == 4 ? ND_PRINT("MCCA Setup Request"): \ + (v) == 5 ? ND_PRINT("MCCA Setup Reply"): \ + (v) == 6 ? ND_PRINT("MCCA Advertisement Request"): \ + (v) == 7 ? ND_PRINT("MCCA Advertisement"): \ + (v) == 8 ? ND_PRINT("MCCA Teardown"): \ + (v) == 9 ? ND_PRINT("TBTT Adjustment Request"): \ + (v) == 10 ? ND_PRINT("TBTT Adjustment Response"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_MULTIHOP_ACTION(v) (\ - (v) == 0 ? ND_PRINT((ndo, "Proxy Update")) : \ - (v) == 1 ? ND_PRINT((ndo, "Proxy Update Confirmation")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 0 ? ND_PRINT("Proxy Update"): \ + (v) == 1 ? ND_PRINT("Proxy Update Confirmation"): \ + ND_PRINT("Act#%u", (v))) #define PRINT_SELFPROT_ACTION(v) (\ - (v) == 1 ? ND_PRINT((ndo, "Peering Open")) : \ - (v) == 2 ? ND_PRINT((ndo, "Peering Confirm")) : \ - (v) == 3 ? ND_PRINT((ndo, "Peering Close")) : \ - (v) == 4 ? ND_PRINT((ndo, "Group Key Inform")) : \ - (v) == 5 ? ND_PRINT((ndo, "Group Key Acknowledge")) : \ - ND_PRINT((ndo, "Act#%d", (v))) \ -) + (v) == 1 ? ND_PRINT("Peering Open"): \ + (v) == 2 ? ND_PRINT("Peering Confirm"): \ + (v) == 3 ? ND_PRINT("Peering Close"): \ + (v) == 4 ? ND_PRINT("Group Key Inform"): \ + (v) == 5 ? ND_PRINT("Group Key Acknowledge"): \ + ND_PRINT("Act#%u", (v))) static int handle_action(netdissect_options *ndo, - const uint8_t *src, const u_char *p, u_int length) + const uint8_t *src, const u_char *p, u_int length) { - if (!ND_TTEST2(*p, 2)) - return 0; + ND_TCHECK_2(p); if (length < 2) - return 0; + goto trunc; if (ndo->ndo_eflag) { - ND_PRINT((ndo, ": ")); + ND_PRINT(": "); } else { - ND_PRINT((ndo, " (%s): ", etheraddr_string(ndo, src))); + ND_PRINT(" (%s): ", etheraddr_string(ndo, src)); } - switch (p[0]) { - case 0: ND_PRINT((ndo, "Spectrum Management Act#%d", p[1])); break; - case 1: ND_PRINT((ndo, "QoS Act#%d", p[1])); break; - case 2: ND_PRINT((ndo, "DLS Act#%d", p[1])); break; - case 3: ND_PRINT((ndo, "BA ")); PRINT_BA_ACTION(p[1]); break; - case 7: ND_PRINT((ndo, "HT ")); PRINT_HT_ACTION(p[1]); break; - case 13: ND_PRINT((ndo, "MeshAction ")); PRINT_MESH_ACTION(p[1]); break; + switch (GET_U_1(p)) { + case 0: ND_PRINT("Spectrum Management Act#%u", GET_U_1(p + 1)); break; + case 1: ND_PRINT("QoS Act#%u", GET_U_1(p + 1)); break; + case 2: ND_PRINT("DLS Act#%u", GET_U_1(p + 1)); break; + case 3: ND_PRINT("BA "); PRINT_BA_ACTION(GET_U_1(p + 1)); break; + case 7: ND_PRINT("HT "); PRINT_HT_ACTION(GET_U_1(p + 1)); break; + case 13: ND_PRINT("MeshAction "); PRINT_MESH_ACTION(GET_U_1(p + 1)); break; case 14: - ND_PRINT((ndo, "MultiohopAction ")); - PRINT_MULTIHOP_ACTION(p[1]); break; + ND_PRINT("MultiohopAction "); + PRINT_MULTIHOP_ACTION(GET_U_1(p + 1)); break; case 15: - ND_PRINT((ndo, "SelfprotectAction ")); - PRINT_SELFPROT_ACTION(p[1]); break; - case 127: ND_PRINT((ndo, "Vendor Act#%d", p[1])); break; + ND_PRINT("SelfprotectAction "); + PRINT_SELFPROT_ACTION(GET_U_1(p + 1)); break; + case 127: ND_PRINT("Vendor Act#%u", GET_U_1(p + 1)); break; default: - ND_PRINT((ndo, "Reserved(%d) Act#%d", p[0], p[1])); + ND_PRINT("Reserved(%u) Act#%u", GET_U_1(p), GET_U_1(p + 1)); break; } return 1; +trunc: + return 0; } @@ -1933,9 +1620,9 @@ handle_action(netdissect_options *ndo, static int mgmt_body_print(netdissect_options *ndo, - uint16_t fc, const uint8_t *src, const u_char *p, u_int length) + uint16_t fc, const uint8_t *src, const u_char *p, u_int length) { - ND_PRINT((ndo, "%s", tok2str(st_str, "Unhandled Management subtype(%x)", FC_SUBTYPE(fc)))); + ND_PRINT("%s", tok2str(st_str, "Unhandled Management subtype(%x)", FC_SUBTYPE(fc))); /* There may be a problem w/ AP not having this bit set */ if (FC_PROTECTED(fc)) @@ -1977,73 +1664,67 @@ mgmt_body_print(netdissect_options *ndo, static int ctrl_body_print(netdissect_options *ndo, - uint16_t fc, const u_char *p) + uint16_t fc, const u_char *p) { - ND_PRINT((ndo, "%s", tok2str(ctrl_str, "Unknown Ctrl Subtype", FC_SUBTYPE(fc)))); + ND_PRINT("%s", tok2str(ctrl_str, "Unknown Ctrl Subtype", FC_SUBTYPE(fc))); switch (FC_SUBTYPE(fc)) { case CTRL_CONTROL_WRAPPER: /* XXX - requires special handling */ break; case CTRL_BAR: - if (!ND_TTEST2(*p, CTRL_BAR_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_BAR_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s TA:%s CTL(%x) SEQ(%u) ", + ND_PRINT(" RA:%s TA:%s CTL(%x) SEQ(%u) ", etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ra), etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ta), - EXTRACT_LE_16BITS(&(((const struct ctrl_bar_hdr_t *)p)->ctl)), - EXTRACT_LE_16BITS(&(((const struct ctrl_bar_hdr_t *)p)->seq)))); + GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->ctl), + GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->seq)); break; case CTRL_BA: - if (!ND_TTEST2(*p, CTRL_BA_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_BA_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra))); + ND_PRINT(" RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra)); break; case CTRL_PS_POLL: - if (!ND_TTEST2(*p, CTRL_PS_POLL_HDRLEN)) - return 0; - ND_PRINT((ndo, " AID(%x)", - EXTRACT_LE_16BITS(&(((const struct ctrl_ps_poll_hdr_t *)p)->aid)))); + ND_TCHECK_LEN(p, CTRL_PS_POLL_HDRLEN); + ND_PRINT(" AID(%x)", + GET_LE_U_2(((const struct ctrl_ps_poll_hdr_t *)p)->aid)); break; case CTRL_RTS: - if (!ND_TTEST2(*p, CTRL_RTS_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_RTS_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " TA:%s ", - etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta))); + ND_PRINT(" TA:%s ", + etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta)); break; case CTRL_CTS: - if (!ND_TTEST2(*p, CTRL_CTS_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_CTS_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra))); + ND_PRINT(" RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra)); break; case CTRL_ACK: - if (!ND_TTEST2(*p, CTRL_ACK_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_ACK_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra))); + ND_PRINT(" RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra)); break; case CTRL_CF_END: - if (!ND_TTEST2(*p, CTRL_END_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_END_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->ra))); + ND_PRINT(" RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->ra)); break; case CTRL_END_ACK: - if (!ND_TTEST2(*p, CTRL_END_ACK_HDRLEN)) - return 0; + ND_TCHECK_LEN(p, CTRL_END_ACK_HDRLEN); if (!ndo->ndo_eflag) - ND_PRINT((ndo, " RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->ra))); + ND_PRINT(" RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->ra)); break; } return 1; +trunc: + return 0; } /* @@ -2061,25 +1742,33 @@ ctrl_body_print(netdissect_options *ndo, */ static void get_data_src_dst_mac(uint16_t fc, const u_char *p, const uint8_t **srcp, - const uint8_t **dstp) + const uint8_t **dstp) { #define ADDR1 (p + 4) #define ADDR2 (p + 10) #define ADDR3 (p + 16) #define ADDR4 (p + 24) - if (!FC_TO_DS(fc) && !FC_FROM_DS(fc)) { - *srcp = ADDR2; - *dstp = ADDR1; - } else if (!FC_TO_DS(fc) && FC_FROM_DS(fc)) { - *srcp = ADDR3; - *dstp = ADDR1; - } else if (FC_TO_DS(fc) && !FC_FROM_DS(fc)) { - *srcp = ADDR2; - *dstp = ADDR3; - } else if (FC_TO_DS(fc) && FC_FROM_DS(fc)) { - *srcp = ADDR4; - *dstp = ADDR3; + if (!FC_TO_DS(fc)) { + if (!FC_FROM_DS(fc)) { + /* not To DS and not From DS */ + *srcp = ADDR2; + *dstp = ADDR1; + } else { + /* not To DS and From DS */ + *srcp = ADDR3; + *dstp = ADDR1; + } + } else { + if (!FC_FROM_DS(fc)) { + /* From DS and not To DS */ + *srcp = ADDR2; + *dstp = ADDR3; + } else { + /* To DS and From DS */ + *srcp = ADDR4; + *dstp = ADDR3; + } } #undef ADDR1 @@ -2110,19 +1799,19 @@ data_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p) if (DATA_FRAME_IS_CF_ACK(subtype) || DATA_FRAME_IS_CF_POLL(subtype) || DATA_FRAME_IS_QOS(subtype)) { - ND_PRINT((ndo, "CF ")); + ND_PRINT("CF "); if (DATA_FRAME_IS_CF_ACK(subtype)) { if (DATA_FRAME_IS_CF_POLL(subtype)) - ND_PRINT((ndo, "Ack/Poll")); + ND_PRINT("Ack/Poll"); else - ND_PRINT((ndo, "Ack")); + ND_PRINT("Ack"); } else { if (DATA_FRAME_IS_CF_POLL(subtype)) - ND_PRINT((ndo, "Poll")); + ND_PRINT("Poll"); } if (DATA_FRAME_IS_QOS(subtype)) - ND_PRINT((ndo, "+QoS")); - ND_PRINT((ndo, " ")); + ND_PRINT("+QoS"); + ND_PRINT(" "); } #define ADDR1 (p + 4) @@ -2131,21 +1820,21 @@ data_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p) #define ADDR4 (p + 24) if (!FC_TO_DS(fc) && !FC_FROM_DS(fc)) { - ND_PRINT((ndo, "DA:%s SA:%s BSSID:%s ", + ND_PRINT("DA:%s SA:%s BSSID:%s ", etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2), - etheraddr_string(ndo, ADDR3))); + etheraddr_string(ndo, ADDR3)); } else if (!FC_TO_DS(fc) && FC_FROM_DS(fc)) { - ND_PRINT((ndo, "DA:%s BSSID:%s SA:%s ", + ND_PRINT("DA:%s BSSID:%s SA:%s ", etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2), - etheraddr_string(ndo, ADDR3))); + etheraddr_string(ndo, ADDR3)); } else if (FC_TO_DS(fc) && !FC_FROM_DS(fc)) { - ND_PRINT((ndo, "BSSID:%s SA:%s DA:%s ", + ND_PRINT("BSSID:%s SA:%s DA:%s ", etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2), - etheraddr_string(ndo, ADDR3))); + etheraddr_string(ndo, ADDR3)); } else if (FC_TO_DS(fc) && FC_FROM_DS(fc)) { - ND_PRINT((ndo, "RA:%s TA:%s DA:%s SA:%s ", + ND_PRINT("RA:%s TA:%s DA:%s SA:%s ", etheraddr_string(ndo, ADDR1), etheraddr_string(ndo, ADDR2), - etheraddr_string(ndo, ADDR3), etheraddr_string(ndo, ADDR4))); + etheraddr_string(ndo, ADDR3), etheraddr_string(ndo, ADDR4)); } #undef ADDR1 @@ -2159,9 +1848,9 @@ mgmt_header_print(netdissect_options *ndo, const u_char *p) { const struct mgmt_header_t *hp = (const struct mgmt_header_t *) p; - ND_PRINT((ndo, "BSSID:%s DA:%s SA:%s ", + ND_PRINT("BSSID:%s DA:%s SA:%s ", etheraddr_string(ndo, (hp)->bssid), etheraddr_string(ndo, (hp)->da), - etheraddr_string(ndo, (hp)->sa))); + etheraddr_string(ndo, (hp)->sa)); } static void @@ -2169,43 +1858,43 @@ ctrl_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p) { switch (FC_SUBTYPE(fc)) { case CTRL_BAR: - ND_PRINT((ndo, " RA:%s TA:%s CTL(%x) SEQ(%u) ", + ND_PRINT(" RA:%s TA:%s CTL(%x) SEQ(%u) ", etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ra), etheraddr_string(ndo, ((const struct ctrl_bar_hdr_t *)p)->ta), - EXTRACT_LE_16BITS(&(((const struct ctrl_bar_hdr_t *)p)->ctl)), - EXTRACT_LE_16BITS(&(((const struct ctrl_bar_hdr_t *)p)->seq)))); + GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->ctl), + GET_LE_U_2(((const struct ctrl_bar_hdr_t *)p)->seq)); break; case CTRL_BA: - ND_PRINT((ndo, "RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra))); + ND_PRINT("RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_ba_hdr_t *)p)->ra)); break; case CTRL_PS_POLL: - ND_PRINT((ndo, "BSSID:%s TA:%s ", + ND_PRINT("BSSID:%s TA:%s ", etheraddr_string(ndo, ((const struct ctrl_ps_poll_hdr_t *)p)->bssid), - etheraddr_string(ndo, ((const struct ctrl_ps_poll_hdr_t *)p)->ta))); + etheraddr_string(ndo, ((const struct ctrl_ps_poll_hdr_t *)p)->ta)); break; case CTRL_RTS: - ND_PRINT((ndo, "RA:%s TA:%s ", + ND_PRINT("RA:%s TA:%s ", etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ra), - etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta))); + etheraddr_string(ndo, ((const struct ctrl_rts_hdr_t *)p)->ta)); break; case CTRL_CTS: - ND_PRINT((ndo, "RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra))); + ND_PRINT("RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_cts_hdr_t *)p)->ra)); break; case CTRL_ACK: - ND_PRINT((ndo, "RA:%s ", - etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra))); + ND_PRINT("RA:%s ", + etheraddr_string(ndo, ((const struct ctrl_ack_hdr_t *)p)->ra)); break; case CTRL_CF_END: - ND_PRINT((ndo, "RA:%s BSSID:%s ", + ND_PRINT("RA:%s BSSID:%s ", etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->ra), - etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->bssid))); + etheraddr_string(ndo, ((const struct ctrl_end_hdr_t *)p)->bssid)); break; case CTRL_END_ACK: - ND_PRINT((ndo, "RA:%s BSSID:%s ", + ND_PRINT("RA:%s BSSID:%s ", etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->ra), - etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->bssid))); + etheraddr_string(ndo, ((const struct ctrl_end_ack_hdr_t *)p)->bssid)); break; default: /* We shouldn't get here - we should already have quit */ @@ -2215,7 +1904,7 @@ ctrl_header_print(netdissect_options *ndo, uint16_t fc, const u_char *p) static int extract_header_length(netdissect_options *ndo, - uint16_t fc) + uint16_t fc) { int len; @@ -2243,7 +1932,7 @@ extract_header_length(netdissect_options *ndo, case CTRL_END_ACK: return CTRL_END_ACK_HDRLEN; default: - ND_PRINT((ndo, "unknown 802.11 ctrl frame subtype (%d)", FC_SUBTYPE(fc))); + ND_PRINT("unknown 802.11 ctrl frame subtype (%u)", FC_SUBTYPE(fc)); return 0; } case T_DATA: @@ -2252,15 +1941,15 @@ extract_header_length(netdissect_options *ndo, len += 2; return len; default: - ND_PRINT((ndo, "unknown 802.11 frame type (%d)", FC_TYPE(fc))); + ND_PRINT("unknown 802.11 frame type (%u)", FC_TYPE(fc)); return 0; } } static int -extract_mesh_header_length(const u_char *p) +extract_mesh_header_length(netdissect_options *ndo, const u_char *p) { - return (p[0] &~ 3) ? 0 : 6*(1 + (p[0] & 3)); + return (GET_U_1(p) &~ 3) ? 0 : 6*(1 + (GET_U_1(p) & 3)); } /* @@ -2268,41 +1957,40 @@ extract_mesh_header_length(const u_char *p) */ static void ieee_802_11_hdr_print(netdissect_options *ndo, - uint16_t fc, const u_char *p, u_int hdrlen, - u_int meshdrlen) + uint16_t fc, const u_char *p, u_int hdrlen, + u_int meshdrlen) { if (ndo->ndo_vflag) { if (FC_MORE_DATA(fc)) - ND_PRINT((ndo, "More Data ")); + ND_PRINT("More Data "); if (FC_MORE_FLAG(fc)) - ND_PRINT((ndo, "More Fragments ")); + ND_PRINT("More Fragments "); if (FC_POWER_MGMT(fc)) - ND_PRINT((ndo, "Pwr Mgmt ")); + ND_PRINT("Pwr Mgmt "); if (FC_RETRY(fc)) - ND_PRINT((ndo, "Retry ")); + ND_PRINT("Retry "); if (FC_ORDER(fc)) - ND_PRINT((ndo, "Strictly Ordered ")); + ND_PRINT("Strictly Ordered "); if (FC_PROTECTED(fc)) - ND_PRINT((ndo, "Protected ")); + ND_PRINT("Protected "); if (FC_TYPE(fc) != T_CTRL || FC_SUBTYPE(fc) != CTRL_PS_POLL) - ND_PRINT((ndo, "%dus ", - EXTRACT_LE_16BITS( - &((const struct mgmt_header_t *)p)->duration))); + ND_PRINT("%uus ", + GET_LE_U_2(((const struct mgmt_header_t *)p)->duration)); } if (meshdrlen != 0) { const struct meshcntl_t *mc = - (const struct meshcntl_t *)&p[hdrlen - meshdrlen]; - int ae = mc->flags & 3; + (const struct meshcntl_t *)(p + hdrlen - meshdrlen); + u_int ae = GET_U_1(mc->flags) & 3; - ND_PRINT((ndo, "MeshData (AE %d TTL %u seq %u", ae, mc->ttl, - EXTRACT_LE_32BITS(mc->seq))); + ND_PRINT("MeshData (AE %u TTL %u seq %u", ae, + GET_U_1(mc->ttl), GET_LE_U_4(mc->seq)); if (ae > 0) - ND_PRINT((ndo, " A4:%s", etheraddr_string(ndo, mc->addr4))); + ND_PRINT(" A4:%s", etheraddr_string(ndo, mc->addr4)); if (ae > 1) - ND_PRINT((ndo, " A5:%s", etheraddr_string(ndo, mc->addr5))); + ND_PRINT(" A5:%s", etheraddr_string(ndo, mc->addr5)); if (ae > 2) - ND_PRINT((ndo, " A6:%s", etheraddr_string(ndo, mc->addr6))); - ND_PRINT((ndo, ") ")); + ND_PRINT(" A6:%s", etheraddr_string(ndo, mc->addr6)); + ND_PRINT(") "); } switch (FC_TYPE(fc)) { @@ -2320,24 +2008,21 @@ ieee_802_11_hdr_print(netdissect_options *ndo, } } -#ifndef roundup2 -#define roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) /* if y is powers of two */ -#endif - static u_int ieee802_11_print(netdissect_options *ndo, - const u_char *p, u_int length, u_int orig_caplen, int pad, - u_int fcslen) + const u_char *p, u_int length, u_int orig_caplen, int pad, + u_int fcslen) { uint16_t fc; u_int caplen, hdrlen, meshdrlen; - const uint8_t *src, *dst; + struct lladdr_info src, dst; int llc_hdrlen; + ndo->ndo_protocol = "802.11"; caplen = orig_caplen; /* Remove FCS, if present */ if (length < fcslen) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } length -= fcslen; @@ -2349,11 +2034,11 @@ ieee802_11_print(netdissect_options *ndo, } if (caplen < IEEE802_11_FC_LEN) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return orig_caplen; } - fc = EXTRACT_LE_16BITS(p); + fc = GET_LE_U_2(p); hdrlen = extract_header_length(ndo, fc); if (hdrlen == 0) { /* Unknown frame type or control frame subtype; quit. */ @@ -2363,13 +2048,17 @@ ieee802_11_print(netdissect_options *ndo, hdrlen = roundup2(hdrlen, 4); if (ndo->ndo_Hflag && FC_TYPE(fc) == T_DATA && DATA_FRAME_IS_QOS(FC_SUBTYPE(fc))) { - meshdrlen = extract_mesh_header_length(p+hdrlen); + if(!ND_TTEST_1(p + hdrlen)) { + nd_print_trunc(ndo); + return hdrlen; + } + meshdrlen = extract_mesh_header_length(ndo, p + hdrlen); hdrlen += meshdrlen; } else meshdrlen = 0; if (caplen < hdrlen) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return hdrlen; } @@ -2383,17 +2072,19 @@ ieee802_11_print(netdissect_options *ndo, caplen -= hdrlen; p += hdrlen; + src.addr_string = etheraddr_string; + dst.addr_string = etheraddr_string; switch (FC_TYPE(fc)) { case T_MGMT: - get_mgmt_src_dst_mac(p - hdrlen, &src, &dst); - if (!mgmt_body_print(ndo, fc, src, p, length)) { - ND_PRINT((ndo, "%s", tstr)); + get_mgmt_src_dst_mac(p - hdrlen, &src.addr, &dst.addr); + if (!mgmt_body_print(ndo, fc, src.addr, p, length)) { + nd_print_trunc(ndo); return hdrlen; } break; case T_CTRL: if (!ctrl_body_print(ndo, fc, p - hdrlen)) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return hdrlen; } break; @@ -2402,14 +2093,14 @@ ieee802_11_print(netdissect_options *ndo, return hdrlen; /* no-data frame */ /* There may be a problem w/ AP not having this bit set */ if (FC_PROTECTED(fc)) { - ND_PRINT((ndo, "Data")); + ND_PRINT("Data"); if (!wep_print(ndo, p)) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return hdrlen; } } else { - get_data_src_dst_mac(fc, p - hdrlen, &src, &dst); - llc_hdrlen = llc_print(ndo, p, length, caplen, dst, src); + get_data_src_dst_mac(fc, p - hdrlen, &src.addr, &dst.addr); + llc_hdrlen = llc_print(ndo, p, length, caplen, &src, &dst); if (llc_hdrlen < 0) { /* * Some kinds of LLC packet we cannot @@ -2438,216 +2129,475 @@ ieee802_11_print(netdissect_options *ndo, */ u_int ieee802_11_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { + ndo->ndo_protocol = "802.11_if"; return ieee802_11_print(ndo, p, h->len, h->caplen, 0, 0); } -#define IEEE80211_CHAN_FHSS \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK) -#define IEEE80211_CHAN_A \ - (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM) -#define IEEE80211_CHAN_B \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK) -#define IEEE80211_CHAN_PUREG \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM) -#define IEEE80211_CHAN_G \ - (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN) -#define IS_CHAN_FHSS(flags) \ - ((flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS) -#define IS_CHAN_A(flags) \ - ((flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A) -#define IS_CHAN_B(flags) \ - ((flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B) -#define IS_CHAN_PUREG(flags) \ - ((flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG) -#define IS_CHAN_G(flags) \ - ((flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G) -#define IS_CHAN_ANYG(flags) \ - (IS_CHAN_PUREG(flags) || IS_CHAN_G(flags)) +/* $FreeBSD: src/sys/net80211/ieee80211_radiotap.h,v 1.5 2005/01/22 20:12:05 sam Exp $ */ +/* NetBSD: ieee802_11_radio.h,v 1.2 2006/02/26 03:04:03 dyoung Exp */ -static void -print_chaninfo(netdissect_options *ndo, - int freq, int flags) -{ - ND_PRINT((ndo, "%u MHz", freq)); - if (IS_CHAN_FHSS(flags)) - ND_PRINT((ndo, " FHSS")); - if (IS_CHAN_A(flags)) { - if (flags & IEEE80211_CHAN_HALF) - ND_PRINT((ndo, " 11a/10Mhz")); - else if (flags & IEEE80211_CHAN_QUARTER) - ND_PRINT((ndo, " 11a/5Mhz")); - else - ND_PRINT((ndo, " 11a")); - } - if (IS_CHAN_ANYG(flags)) { - if (flags & IEEE80211_CHAN_HALF) - ND_PRINT((ndo, " 11g/10Mhz")); - else if (flags & IEEE80211_CHAN_QUARTER) - ND_PRINT((ndo, " 11g/5Mhz")); - else - ND_PRINT((ndo, " 11g")); - } else if (IS_CHAN_B(flags)) - ND_PRINT((ndo, " 11b")); - if (flags & IEEE80211_CHAN_TURBO) - ND_PRINT((ndo, " Turbo")); - if (flags & IEEE80211_CHAN_HT20) - ND_PRINT((ndo, " ht/20")); - else if (flags & IEEE80211_CHAN_HT40D) - ND_PRINT((ndo, " ht/40-")); - else if (flags & IEEE80211_CHAN_HT40U) - ND_PRINT((ndo, " ht/40+")); - ND_PRINT((ndo, " ")); -} +/*- + * Copyright (c) 2003, 2004 David Young. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of David Young may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED BY DAVID YOUNG ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DAVID + * YOUNG BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + */ -static int -print_radiotap_field(netdissect_options *ndo, - struct cpack_state *s, uint32_t bit, uint8_t *flags, - struct radiotap_state *state, uint32_t presentflags) -{ - union { - int8_t i8; - uint8_t u8; - int16_t i16; - uint16_t u16; - uint32_t u32; - uint64_t u64; - } u, u2, u3, u4; - int rc; +/* A generic radio capture format is desirable. It must be + * rigidly defined (e.g., units for fields should be given), + * and easily extensible. + * + * The following is an extensible radio capture format. It is + * based on a bitmap indicating which fields are present. + * + * I am trying to describe precisely what the application programmer + * should expect in the following, and for that reason I tell the + * units and origin of each measurement (where it applies), or else I + * use sufficiently weaselly language ("is a monotonically nondecreasing + * function of...") that I cannot set false expectations for lawyerly + * readers. + */ - switch (bit) { - case IEEE80211_RADIOTAP_FLAGS: - rc = cpack_uint8(s, &u.u8); - if (rc != 0) - break; - *flags = u.u8; - break; - case IEEE80211_RADIOTAP_RATE: - rc = cpack_uint8(s, &u.u8); - if (rc != 0) - break; +/* + * The radio capture header precedes the 802.11 header. + * + * Note well: all radiotap fields are little-endian. + */ +struct ieee80211_radiotap_header { + nd_uint8_t it_version; /* Version 0. Only increases + * for drastic changes, + * introduction of compatible + * new fields does not count. + */ + nd_uint8_t it_pad; + nd_uint16_t it_len; /* length of the whole + * header in bytes, including + * it_version, it_pad, + * it_len, and data fields. + */ + nd_uint32_t it_present; /* A bitmap telling which + * fields are present. Set bit 31 + * (0x80000000) to extend the + * bitmap by another 32 bits. + * Additional extensions are made + * by setting bit 31. + */ +}; - /* Save state rate */ - state->rate = u.u8; - break; - case IEEE80211_RADIOTAP_DB_ANTSIGNAL: - case IEEE80211_RADIOTAP_DB_ANTNOISE: - case IEEE80211_RADIOTAP_ANTENNA: - rc = cpack_uint8(s, &u.u8); - break; - case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: - case IEEE80211_RADIOTAP_DBM_ANTNOISE: - rc = cpack_int8(s, &u.i8); - break; - case IEEE80211_RADIOTAP_CHANNEL: - rc = cpack_uint16(s, &u.u16); - if (rc != 0) - break; - rc = cpack_uint16(s, &u2.u16); - break; - case IEEE80211_RADIOTAP_FHSS: - case IEEE80211_RADIOTAP_LOCK_QUALITY: - case IEEE80211_RADIOTAP_TX_ATTENUATION: - case IEEE80211_RADIOTAP_RX_FLAGS: - rc = cpack_uint16(s, &u.u16); - break; - case IEEE80211_RADIOTAP_DB_TX_ATTENUATION: - rc = cpack_uint8(s, &u.u8); - break; - case IEEE80211_RADIOTAP_DBM_TX_POWER: - rc = cpack_int8(s, &u.i8); - break; - case IEEE80211_RADIOTAP_TSFT: - rc = cpack_uint64(s, &u.u64); - break; - case IEEE80211_RADIOTAP_XCHANNEL: - rc = cpack_uint32(s, &u.u32); - if (rc != 0) - break; - rc = cpack_uint16(s, &u2.u16); - if (rc != 0) - break; - rc = cpack_uint8(s, &u3.u8); - if (rc != 0) - break; - rc = cpack_uint8(s, &u4.u8); - break; - case IEEE80211_RADIOTAP_MCS: - rc = cpack_uint8(s, &u.u8); - if (rc != 0) - break; - rc = cpack_uint8(s, &u2.u8); - if (rc != 0) - break; - rc = cpack_uint8(s, &u3.u8); - break; - case IEEE80211_RADIOTAP_VENDOR_NAMESPACE: { - uint8_t vns[3]; - uint16_t length; - uint8_t subspace; +/* Name Data type Units + * ---- --------- ----- + * + * IEEE80211_RADIOTAP_TSFT uint64_t microseconds + * + * Value in microseconds of the MAC's 64-bit 802.11 Time + * Synchronization Function timer when the first bit of the + * MPDU arrived at the MAC. For received frames, only. + * + * IEEE80211_RADIOTAP_CHANNEL 2 x uint16_t MHz, bitmap + * + * Tx/Rx frequency in MHz, followed by flags (see below). + * Note that IEEE80211_RADIOTAP_XCHANNEL must be used to + * represent an HT channel as there is not enough room in + * the flags word. + * + * IEEE80211_RADIOTAP_FHSS uint16_t see below + * + * For frequency-hopping radios, the hop set (first byte) + * and pattern (second byte). + * + * IEEE80211_RADIOTAP_RATE uint8_t 500kb/s or index + * + * Tx/Rx data rate. If bit 0x80 is set then it represents an + * an MCS index and not an IEEE rate. + * + * IEEE80211_RADIOTAP_DBM_ANTSIGNAL int8_t decibels from + * one milliwatt (dBm) + * + * RF signal power at the antenna, decibel difference from + * one milliwatt. + * + * IEEE80211_RADIOTAP_DBM_ANTNOISE int8_t decibels from + * one milliwatt (dBm) + * + * RF noise power at the antenna, decibel difference from one + * milliwatt. + * + * IEEE80211_RADIOTAP_DB_ANTSIGNAL uint8_t decibel (dB) + * + * RF signal power at the antenna, decibel difference from an + * arbitrary, fixed reference. + * + * IEEE80211_RADIOTAP_DB_ANTNOISE uint8_t decibel (dB) + * + * RF noise power at the antenna, decibel difference from an + * arbitrary, fixed reference point. + * + * IEEE80211_RADIOTAP_LOCK_QUALITY uint16_t unitless + * + * Quality of Barker code lock. Unitless. Monotonically + * nondecreasing with "better" lock strength. Called "Signal + * Quality" in datasheets. (Is there a standard way to measure + * this?) + * + * IEEE80211_RADIOTAP_TX_ATTENUATION uint16_t unitless + * + * Transmit power expressed as unitless distance from max + * power set at factory calibration. 0 is max power. + * Monotonically nondecreasing with lower power levels. + * + * IEEE80211_RADIOTAP_DB_TX_ATTENUATION uint16_t decibels (dB) + * + * Transmit power expressed as decibel distance from max power + * set at factory calibration. 0 is max power. Monotonically + * nondecreasing with lower power levels. + * + * IEEE80211_RADIOTAP_DBM_TX_POWER int8_t decibels from + * one milliwatt (dBm) + * + * Transmit power expressed as dBm (decibels from a 1 milliwatt + * reference). This is the absolute power level measured at + * the antenna port. + * + * IEEE80211_RADIOTAP_FLAGS uint8_t bitmap + * + * Properties of transmitted and received frames. See flags + * defined below. + * + * IEEE80211_RADIOTAP_ANTENNA uint8_t antenna index + * + * Unitless indication of the Rx/Tx antenna for this packet. + * The first antenna is antenna 0. + * + * IEEE80211_RADIOTAP_RX_FLAGS uint16_t bitmap + * + * Properties of received frames. See flags defined below. + * + * IEEE80211_RADIOTAP_XCHANNEL uint32_t bitmap + * uint16_t MHz + * uint8_t channel number + * uint8_t .5 dBm + * + * Extended channel specification: flags (see below) followed by + * frequency in MHz, the corresponding IEEE channel number, and + * finally the maximum regulatory transmit power cap in .5 dBm + * units. This property supersedes IEEE80211_RADIOTAP_CHANNEL + * and only one of the two should be present. + * + * IEEE80211_RADIOTAP_MCS uint8_t known + * uint8_t flags + * uint8_t mcs + * + * Bitset indicating which fields have known values, followed + * by bitset of flag values, followed by the MCS rate index as + * in IEEE 802.11n. + * + * + * IEEE80211_RADIOTAP_AMPDU_STATUS u32, u16, u8, u8 unitless + * + * Contains the AMPDU information for the subframe. + * + * IEEE80211_RADIOTAP_VHT u16, u8, u8, u8[4], u8, u8, u16 + * + * Contains VHT information about this frame. + * + * IEEE80211_RADIOTAP_VENDOR_NAMESPACE + * uint8_t OUI[3] + * uint8_t subspace + * uint16_t length + * + * The Vendor Namespace Field contains three sub-fields. The first + * sub-field is 3 bytes long. It contains the vendor's IEEE 802 + * Organizationally Unique Identifier (OUI). The fourth byte is a + * vendor-specific "namespace selector." + * + */ +enum ieee80211_radiotap_type { + IEEE80211_RADIOTAP_TSFT = 0, + IEEE80211_RADIOTAP_FLAGS = 1, + IEEE80211_RADIOTAP_RATE = 2, + IEEE80211_RADIOTAP_CHANNEL = 3, + IEEE80211_RADIOTAP_FHSS = 4, + IEEE80211_RADIOTAP_DBM_ANTSIGNAL = 5, + IEEE80211_RADIOTAP_DBM_ANTNOISE = 6, + IEEE80211_RADIOTAP_LOCK_QUALITY = 7, + IEEE80211_RADIOTAP_TX_ATTENUATION = 8, + IEEE80211_RADIOTAP_DB_TX_ATTENUATION = 9, + IEEE80211_RADIOTAP_DBM_TX_POWER = 10, + IEEE80211_RADIOTAP_ANTENNA = 11, + IEEE80211_RADIOTAP_DB_ANTSIGNAL = 12, + IEEE80211_RADIOTAP_DB_ANTNOISE = 13, + IEEE80211_RADIOTAP_RX_FLAGS = 14, + /* NB: gap for netbsd definitions */ + IEEE80211_RADIOTAP_XCHANNEL = 18, + IEEE80211_RADIOTAP_MCS = 19, + IEEE80211_RADIOTAP_AMPDU_STATUS = 20, + IEEE80211_RADIOTAP_VHT = 21, + IEEE80211_RADIOTAP_NAMESPACE = 29, + IEEE80211_RADIOTAP_VENDOR_NAMESPACE = 30, + IEEE80211_RADIOTAP_EXT = 31 +}; - if ((cpack_align_and_reserve(s, 2)) == NULL) { - rc = -1; - break; - } +/* channel attributes */ +#define IEEE80211_CHAN_TURBO 0x00010 /* Turbo channel */ +#define IEEE80211_CHAN_CCK 0x00020 /* CCK channel */ +#define IEEE80211_CHAN_OFDM 0x00040 /* OFDM channel */ +#define IEEE80211_CHAN_2GHZ 0x00080 /* 2 GHz spectrum channel. */ +#define IEEE80211_CHAN_5GHZ 0x00100 /* 5 GHz spectrum channel */ +#define IEEE80211_CHAN_PASSIVE 0x00200 /* Only passive scan allowed */ +#define IEEE80211_CHAN_DYN 0x00400 /* Dynamic CCK-OFDM channel */ +#define IEEE80211_CHAN_GFSK 0x00800 /* GFSK channel (FHSS PHY) */ +#define IEEE80211_CHAN_GSM 0x01000 /* 900 MHz spectrum channel */ +#define IEEE80211_CHAN_STURBO 0x02000 /* 11a static turbo channel only */ +#define IEEE80211_CHAN_HALF 0x04000 /* Half rate channel */ +#define IEEE80211_CHAN_QUARTER 0x08000 /* Quarter rate channel */ +#define IEEE80211_CHAN_HT20 0x10000 /* HT 20 channel */ +#define IEEE80211_CHAN_HT40U 0x20000 /* HT 40 channel w/ ext above */ +#define IEEE80211_CHAN_HT40D 0x40000 /* HT 40 channel w/ ext below */ - rc = cpack_uint8(s, &vns[0]); - if (rc != 0) - break; - rc = cpack_uint8(s, &vns[1]); - if (rc != 0) - break; - rc = cpack_uint8(s, &vns[2]); - if (rc != 0) - break; - rc = cpack_uint8(s, &subspace); - if (rc != 0) - break; - rc = cpack_uint16(s, &length); - if (rc != 0) - break; +/* Useful combinations of channel characteristics, borrowed from Ethereal */ +#define IEEE80211_CHAN_A \ + (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM) +#define IEEE80211_CHAN_B \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK) +#define IEEE80211_CHAN_G \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN) +#define IEEE80211_CHAN_TA \ + (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO) +#define IEEE80211_CHAN_TG \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN | IEEE80211_CHAN_TURBO) - /* Skip up to length */ - s->c_next += length; - break; - } - default: - /* this bit indicates a field whose - * size we do not know, so we cannot - * proceed. Just print the bit number. - */ - ND_PRINT((ndo, "[bit %u] ", bit)); - return -1; - } - if (rc != 0) { - ND_PRINT((ndo, "%s", tstr)); - return rc; - } +/* For IEEE80211_RADIOTAP_FLAGS */ +#define IEEE80211_RADIOTAP_F_CFP 0x01 /* sent/received + * during CFP + */ +#define IEEE80211_RADIOTAP_F_SHORTPRE 0x02 /* sent/received + * with short + * preamble + */ +#define IEEE80211_RADIOTAP_F_WEP 0x04 /* sent/received + * with WEP encryption + */ +#define IEEE80211_RADIOTAP_F_FRAG 0x08 /* sent/received + * with fragmentation + */ +#define IEEE80211_RADIOTAP_F_FCS 0x10 /* frame includes FCS */ +#define IEEE80211_RADIOTAP_F_DATAPAD 0x20 /* frame has padding between + * 802.11 header and payload + * (to 32-bit boundary) + */ +#define IEEE80211_RADIOTAP_F_BADFCS 0x40 /* does not pass FCS check */ - /* Preserve the state present flags */ - state->present = presentflags; +/* For IEEE80211_RADIOTAP_RX_FLAGS */ +#define IEEE80211_RADIOTAP_F_RX_BADFCS 0x0001 /* frame failed crc check */ +#define IEEE80211_RADIOTAP_F_RX_PLCP_CRC 0x0002 /* frame failed PLCP CRC check */ - switch (bit) { - case IEEE80211_RADIOTAP_CHANNEL: +/* For IEEE80211_RADIOTAP_MCS known */ +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN 0x01 +#define IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN 0x02 /* MCS index field */ +#define IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN 0x04 +#define IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN 0x08 +#define IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN 0x10 +#define IEEE80211_RADIOTAP_MCS_STBC_KNOWN 0x20 +#define IEEE80211_RADIOTAP_MCS_NESS_KNOWN 0x40 +#define IEEE80211_RADIOTAP_MCS_NESS_BIT_1 0x80 + +/* For IEEE80211_RADIOTAP_MCS flags */ +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK 0x03 +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20 0 +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 1 +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20L 2 +#define IEEE80211_RADIOTAP_MCS_BANDWIDTH_20U 3 +#define IEEE80211_RADIOTAP_MCS_SHORT_GI 0x04 /* short guard interval */ +#define IEEE80211_RADIOTAP_MCS_HT_GREENFIELD 0x08 +#define IEEE80211_RADIOTAP_MCS_FEC_LDPC 0x10 +#define IEEE80211_RADIOTAP_MCS_STBC_MASK 0x60 +#define IEEE80211_RADIOTAP_MCS_STBC_1 1 +#define IEEE80211_RADIOTAP_MCS_STBC_2 2 +#define IEEE80211_RADIOTAP_MCS_STBC_3 3 +#define IEEE80211_RADIOTAP_MCS_STBC_SHIFT 5 +#define IEEE80211_RADIOTAP_MCS_NESS_BIT_0 0x80 + +/* For IEEE80211_RADIOTAP_AMPDU_STATUS */ +#define IEEE80211_RADIOTAP_AMPDU_REPORT_ZEROLEN 0x0001 +#define IEEE80211_RADIOTAP_AMPDU_IS_ZEROLEN 0x0002 +#define IEEE80211_RADIOTAP_AMPDU_LAST_KNOWN 0x0004 +#define IEEE80211_RADIOTAP_AMPDU_IS_LAST 0x0008 +#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_ERR 0x0010 +#define IEEE80211_RADIOTAP_AMPDU_DELIM_CRC_KNOWN 0x0020 + +/* For IEEE80211_RADIOTAP_VHT known */ +#define IEEE80211_RADIOTAP_VHT_STBC_KNOWN 0x0001 +#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA_KNOWN 0x0002 +#define IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN 0x0004 +#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_DIS_KNOWN 0x0008 +#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM_KNOWN 0x0010 +#define IEEE80211_RADIOTAP_VHT_BEAMFORMED_KNOWN 0x0020 +#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN 0x0040 +#define IEEE80211_RADIOTAP_VHT_GROUP_ID_KNOWN 0x0080 +#define IEEE80211_RADIOTAP_VHT_PARTIAL_AID_KNOWN 0x0100 + +/* For IEEE80211_RADIOTAP_VHT flags */ +#define IEEE80211_RADIOTAP_VHT_STBC 0x01 +#define IEEE80211_RADIOTAP_VHT_TXOP_PS_NA 0x02 +#define IEEE80211_RADIOTAP_VHT_SHORT_GI 0x04 +#define IEEE80211_RADIOTAP_VHT_SGI_NSYM_M10_9 0x08 +#define IEEE80211_RADIOTAP_VHT_LDPC_EXTRA_OFDM_SYM 0x10 +#define IEEE80211_RADIOTAP_VHT_BEAMFORMED 0x20 + +#define IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK 0x1f + +#define IEEE80211_RADIOTAP_VHT_NSS_MASK 0x0f +#define IEEE80211_RADIOTAP_VHT_MCS_MASK 0xf0 +#define IEEE80211_RADIOTAP_VHT_MCS_SHIFT 4 + +#define IEEE80211_RADIOTAP_CODING_LDPC_USERn 0x01 + +#define IEEE80211_CHAN_FHSS \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK) +#define IEEE80211_CHAN_A \ + (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM) +#define IEEE80211_CHAN_B \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK) +#define IEEE80211_CHAN_PUREG \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM) +#define IEEE80211_CHAN_G \ + (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN) + +#define IS_CHAN_FHSS(flags) \ + ((flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS) +#define IS_CHAN_A(flags) \ + ((flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A) +#define IS_CHAN_B(flags) \ + ((flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B) +#define IS_CHAN_PUREG(flags) \ + ((flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG) +#define IS_CHAN_G(flags) \ + ((flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G) +#define IS_CHAN_ANYG(flags) \ + (IS_CHAN_PUREG(flags) || IS_CHAN_G(flags)) + +static void +print_chaninfo(netdissect_options *ndo, + uint16_t freq, int flags, int presentflags) +{ + ND_PRINT("%u MHz", freq); + if (presentflags & (1 << IEEE80211_RADIOTAP_MCS)) { /* - * If CHANNEL and XCHANNEL are both present, skip - * CHANNEL. + * We have the MCS field, so this is 11n, regardless + * of what the channel flags say. */ - if (presentflags & (1 << IEEE80211_RADIOTAP_XCHANNEL)) - break; - print_chaninfo(ndo, u.u16, u2.u16); + ND_PRINT(" 11n"); + } else { + if (IS_CHAN_FHSS(flags)) + ND_PRINT(" FHSS"); + if (IS_CHAN_A(flags)) { + if (flags & IEEE80211_CHAN_HALF) + ND_PRINT(" 11a/10Mhz"); + else if (flags & IEEE80211_CHAN_QUARTER) + ND_PRINT(" 11a/5Mhz"); + else + ND_PRINT(" 11a"); + } + if (IS_CHAN_ANYG(flags)) { + if (flags & IEEE80211_CHAN_HALF) + ND_PRINT(" 11g/10Mhz"); + else if (flags & IEEE80211_CHAN_QUARTER) + ND_PRINT(" 11g/5Mhz"); + else + ND_PRINT(" 11g"); + } else if (IS_CHAN_B(flags)) + ND_PRINT(" 11b"); + if (flags & IEEE80211_CHAN_TURBO) + ND_PRINT(" Turbo"); + } + /* + * These apply to 11n. + */ + if (flags & IEEE80211_CHAN_HT20) + ND_PRINT(" ht/20"); + else if (flags & IEEE80211_CHAN_HT40D) + ND_PRINT(" ht/40-"); + else if (flags & IEEE80211_CHAN_HT40U) + ND_PRINT(" ht/40+"); + ND_PRINT(" "); +} + +static int +print_radiotap_field(netdissect_options *ndo, + struct cpack_state *s, uint32_t bit, uint8_t *flagsp, + uint32_t presentflags) +{ + u_int i; + int rc; + + switch (bit) { + + case IEEE80211_RADIOTAP_TSFT: { + uint64_t tsft; + + rc = cpack_uint64(ndo, s, &tsft); + if (rc != 0) + goto trunc; + ND_PRINT("%" PRIu64 "us tsft ", tsft); break; - case IEEE80211_RADIOTAP_FHSS: - ND_PRINT((ndo, "fhset %d fhpat %d ", u.u16 & 0xff, (u.u16 >> 8) & 0xff)); + } + + case IEEE80211_RADIOTAP_FLAGS: { + uint8_t flagsval; + + rc = cpack_uint8(ndo, s, &flagsval); + if (rc != 0) + goto trunc; + *flagsp = flagsval; + if (flagsval & IEEE80211_RADIOTAP_F_CFP) + ND_PRINT("cfp "); + if (flagsval & IEEE80211_RADIOTAP_F_SHORTPRE) + ND_PRINT("short preamble "); + if (flagsval & IEEE80211_RADIOTAP_F_WEP) + ND_PRINT("wep "); + if (flagsval & IEEE80211_RADIOTAP_F_FRAG) + ND_PRINT("fragmented "); + if (flagsval & IEEE80211_RADIOTAP_F_BADFCS) + ND_PRINT("bad-fcs "); break; - case IEEE80211_RADIOTAP_RATE: + } + + case IEEE80211_RADIOTAP_RATE: { + uint8_t rate; + + rc = cpack_uint8(ndo, s, &rate); + if (rc != 0) + goto trunc; /* * XXX On FreeBSD rate & 0x80 means we have an MCS. On * Linux and AirPcap it does not. (What about - * Mac OS X, NetBSD, OpenBSD, and DragonFly BSD?) + * macOS, NetBSD, OpenBSD, and DragonFly BSD?) * * This is an issue either for proprietary extensions * to 11a or 11g, which do exist, or for 11n @@ -2665,7 +2615,7 @@ print_radiotap_field(netdissect_options *ndo, * setting. Such rates do exist, e.g. 11n * MCS 7 at 20 MHz with a long guard interval. */ - if (u.u8 >= 0x80 && u.u8 <= 0x8f) { + if (rate >= 0x80 && rate <= 0x8f) { /* * XXX - we don't know the channel width * or guard interval length, so we can't @@ -2682,60 +2632,173 @@ print_radiotap_field(netdissect_options *ndo, * information from Flags, at least on * FreeBSD? */ - ND_PRINT((ndo, "MCS %u ", u.u8 & 0x7f)); + ND_PRINT("MCS %u ", rate & 0x7f); } else - ND_PRINT((ndo, "%2.1f Mb/s ", .5 * u.u8)); + ND_PRINT("%2.1f Mb/s ", .5 * rate); break; - case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: - ND_PRINT((ndo, "%ddB signal ", u.i8)); + } + + case IEEE80211_RADIOTAP_CHANNEL: { + uint16_t frequency; + uint16_t flags; + + rc = cpack_uint16(ndo, s, &frequency); + if (rc != 0) + goto trunc; + rc = cpack_uint16(ndo, s, &flags); + if (rc != 0) + goto trunc; + /* + * If CHANNEL and XCHANNEL are both present, skip + * CHANNEL. + */ + if (presentflags & (1 << IEEE80211_RADIOTAP_XCHANNEL)) + break; + print_chaninfo(ndo, frequency, flags, presentflags); break; - case IEEE80211_RADIOTAP_DBM_ANTNOISE: - ND_PRINT((ndo, "%ddB noise ", u.i8)); + } + + case IEEE80211_RADIOTAP_FHSS: { + uint8_t hopset; + uint8_t hoppat; + + rc = cpack_uint8(ndo, s, &hopset); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &hoppat); + if (rc != 0) + goto trunc; + ND_PRINT("fhset %u fhpat %u ", hopset, hoppat); break; - case IEEE80211_RADIOTAP_DB_ANTSIGNAL: - ND_PRINT((ndo, "%ddB signal ", u.u8)); + } + + case IEEE80211_RADIOTAP_DBM_ANTSIGNAL: { + int8_t dbm_antsignal; + + rc = cpack_int8(ndo, s, &dbm_antsignal); + if (rc != 0) + goto trunc; + ND_PRINT("%ddBm signal ", dbm_antsignal); break; - case IEEE80211_RADIOTAP_DB_ANTNOISE: - ND_PRINT((ndo, "%ddB noise ", u.u8)); + } + + case IEEE80211_RADIOTAP_DBM_ANTNOISE: { + int8_t dbm_antnoise; + + rc = cpack_int8(ndo, s, &dbm_antnoise); + if (rc != 0) + goto trunc; + ND_PRINT("%ddBm noise ", dbm_antnoise); break; - case IEEE80211_RADIOTAP_LOCK_QUALITY: - ND_PRINT((ndo, "%u sq ", u.u16)); + } + + case IEEE80211_RADIOTAP_LOCK_QUALITY: { + uint16_t lock_quality; + + rc = cpack_uint16(ndo, s, &lock_quality); + if (rc != 0) + goto trunc; + ND_PRINT("%u sq ", lock_quality); break; - case IEEE80211_RADIOTAP_TX_ATTENUATION: - ND_PRINT((ndo, "%d tx power ", -(int)u.u16)); + } + + case IEEE80211_RADIOTAP_TX_ATTENUATION: { + int16_t tx_attenuation; + + rc = cpack_int16(ndo, s, &tx_attenuation); + if (rc != 0) + goto trunc; + ND_PRINT("%d tx power ", -tx_attenuation); break; - case IEEE80211_RADIOTAP_DB_TX_ATTENUATION: - ND_PRINT((ndo, "%ddB tx power ", -(int)u.u8)); + } + + case IEEE80211_RADIOTAP_DB_TX_ATTENUATION: { + int8_t db_tx_attenuation; + + rc = cpack_int8(ndo, s, &db_tx_attenuation); + if (rc != 0) + goto trunc; + ND_PRINT("%ddB tx attenuation ", -db_tx_attenuation); break; - case IEEE80211_RADIOTAP_DBM_TX_POWER: - ND_PRINT((ndo, "%ddBm tx power ", u.i8)); + } + + case IEEE80211_RADIOTAP_DBM_TX_POWER: { + int8_t dbm_tx_power; + + rc = cpack_int8(ndo, s, &dbm_tx_power); + if (rc != 0) + goto trunc; + ND_PRINT("%ddBm tx power ", dbm_tx_power); break; - case IEEE80211_RADIOTAP_FLAGS: - if (u.u8 & IEEE80211_RADIOTAP_F_CFP) - ND_PRINT((ndo, "cfp ")); - if (u.u8 & IEEE80211_RADIOTAP_F_SHORTPRE) - ND_PRINT((ndo, "short preamble ")); - if (u.u8 & IEEE80211_RADIOTAP_F_WEP) - ND_PRINT((ndo, "wep ")); - if (u.u8 & IEEE80211_RADIOTAP_F_FRAG) - ND_PRINT((ndo, "fragmented ")); - if (u.u8 & IEEE80211_RADIOTAP_F_BADFCS) - ND_PRINT((ndo, "bad-fcs ")); + } + + case IEEE80211_RADIOTAP_ANTENNA: { + uint8_t antenna; + + rc = cpack_uint8(ndo, s, &antenna); + if (rc != 0) + goto trunc; + ND_PRINT("antenna %u ", antenna); break; - case IEEE80211_RADIOTAP_ANTENNA: - ND_PRINT((ndo, "antenna %d ", u.u8)); + } + + case IEEE80211_RADIOTAP_DB_ANTSIGNAL: { + uint8_t db_antsignal; + + rc = cpack_uint8(ndo, s, &db_antsignal); + if (rc != 0) + goto trunc; + ND_PRINT("%udB signal ", db_antsignal); break; - case IEEE80211_RADIOTAP_TSFT: - ND_PRINT((ndo, "%" PRIu64 "us tsft ", u.u64)); + } + + case IEEE80211_RADIOTAP_DB_ANTNOISE: { + uint8_t db_antnoise; + + rc = cpack_uint8(ndo, s, &db_antnoise); + if (rc != 0) + goto trunc; + ND_PRINT("%udB noise ", db_antnoise); break; - case IEEE80211_RADIOTAP_RX_FLAGS: + } + + case IEEE80211_RADIOTAP_RX_FLAGS: { + uint16_t rx_flags; + + rc = cpack_uint16(ndo, s, &rx_flags); + if (rc != 0) + goto trunc; /* Do nothing for now */ break; - case IEEE80211_RADIOTAP_XCHANNEL: - print_chaninfo(ndo, u2.u16, u.u32); + } + + case IEEE80211_RADIOTAP_XCHANNEL: { + uint32_t flags; + uint16_t frequency; + uint8_t channel; + uint8_t maxpower; + + rc = cpack_uint32(ndo, s, &flags); + if (rc != 0) + goto trunc; + rc = cpack_uint16(ndo, s, &frequency); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &channel); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &maxpower); + if (rc != 0) + goto trunc; + print_chaninfo(ndo, frequency, flags, presentflags); break; + } + case IEEE80211_RADIOTAP_MCS: { - static const char *bandwidth[4] = { + uint8_t known; + uint8_t flags; + uint8_t mcs_index; + static const char *ht_bandwidth[4] = { "20 MHz", "40 MHz", "20 MHz (L)", @@ -2743,25 +2806,34 @@ print_radiotap_field(netdissect_options *ndo, }; float htrate; - if (u.u8 & IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN) { + rc = cpack_uint8(ndo, s, &known); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &flags); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &mcs_index); + if (rc != 0) + goto trunc; + if (known & IEEE80211_RADIOTAP_MCS_MCS_INDEX_KNOWN) { /* * We know the MCS index. */ - if (u3.u8 <= MAX_MCS_INDEX) { + if (mcs_index <= MAX_MCS_INDEX) { /* * And it's in-range. */ - if (u.u8 & (IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN|IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN)) { + if (known & (IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN|IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN)) { /* * And we know both the bandwidth and * the guard interval, so we can look * up the rate. */ htrate = - ieee80211_float_htrates \ - [u3.u8] \ - [((u2.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK) == IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 ? 1 : 0)] \ - [((u2.u8 & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? 1 : 0)]; + ieee80211_float_htrates + [mcs_index] + [((flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK) == IEEE80211_RADIOTAP_MCS_BANDWIDTH_40 ? 1 : 0)] + [((flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? 1 : 0)]; } else { /* * We don't know both the bandwidth @@ -2781,126 +2853,408 @@ print_radiotap_field(netdissect_options *ndo, * We have the rate. * Print it. */ - ND_PRINT((ndo, "%.1f Mb/s MCS %u ", htrate, u3.u8)); + ND_PRINT("%.1f Mb/s MCS %u ", htrate, mcs_index); } else { /* * We at least have the MCS index. * Print it. */ - ND_PRINT((ndo, "MCS %u ", u3.u8)); + ND_PRINT("MCS %u ", mcs_index); } } - if (u.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN) { - ND_PRINT((ndo, "%s ", - bandwidth[u2.u8 & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK])); + if (known & IEEE80211_RADIOTAP_MCS_BANDWIDTH_KNOWN) { + ND_PRINT("%s ", + ht_bandwidth[flags & IEEE80211_RADIOTAP_MCS_BANDWIDTH_MASK]); } - if (u.u8 & IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN) { - ND_PRINT((ndo, "%s GI ", - (u2.u8 & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? - "short" : "lon")); + if (known & IEEE80211_RADIOTAP_MCS_GUARD_INTERVAL_KNOWN) { + ND_PRINT("%s GI ", + (flags & IEEE80211_RADIOTAP_MCS_SHORT_GI) ? + "short" : "long"); } - if (u.u8 & IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN) { - ND_PRINT((ndo, "%s ", - (u2.u8 & IEEE80211_RADIOTAP_MCS_HT_GREENFIELD) ? - "greenfield" : "mixed")); + if (known & IEEE80211_RADIOTAP_MCS_HT_FORMAT_KNOWN) { + ND_PRINT("%s ", + (flags & IEEE80211_RADIOTAP_MCS_HT_GREENFIELD) ? + "greenfield" : "mixed"); } - if (u.u8 & IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN) { - ND_PRINT((ndo, "%s FEC ", - (u2.u8 & IEEE80211_RADIOTAP_MCS_FEC_LDPC) ? - "LDPC" : "BCC")); + if (known & IEEE80211_RADIOTAP_MCS_FEC_TYPE_KNOWN) { + ND_PRINT("%s FEC ", + (flags & IEEE80211_RADIOTAP_MCS_FEC_LDPC) ? + "LDPC" : "BCC"); } - if (u.u8 & IEEE80211_RADIOTAP_MCS_STBC_KNOWN) { - ND_PRINT((ndo, "RX-STBC%u ", - (u2.u8 & IEEE80211_RADIOTAP_MCS_STBC_MASK) >> IEEE80211_RADIOTAP_MCS_STBC_SHIFT)); + if (known & IEEE80211_RADIOTAP_MCS_STBC_KNOWN) { + ND_PRINT("RX-STBC%u ", + (flags & IEEE80211_RADIOTAP_MCS_STBC_MASK) >> IEEE80211_RADIOTAP_MCS_STBC_SHIFT); + } + break; } + case IEEE80211_RADIOTAP_AMPDU_STATUS: { + uint32_t reference_num; + uint16_t flags; + uint8_t delim_crc; + uint8_t reserved; + + rc = cpack_uint32(ndo, s, &reference_num); + if (rc != 0) + goto trunc; + rc = cpack_uint16(ndo, s, &flags); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &delim_crc); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &reserved); + if (rc != 0) + goto trunc; + /* Do nothing for now */ break; } + + case IEEE80211_RADIOTAP_VHT: { + uint16_t known; + uint8_t flags; + uint8_t bandwidth; + uint8_t mcs_nss[4]; + uint8_t coding; + uint8_t group_id; + uint16_t partial_aid; + static const char *vht_bandwidth[32] = { + "20 MHz", + "40 MHz", + "20 MHz (L)", + "20 MHz (U)", + "80 MHz", + "80 MHz (L)", + "80 MHz (U)", + "80 MHz (LL)", + "80 MHz (LU)", + "80 MHz (UL)", + "80 MHz (UU)", + "160 MHz", + "160 MHz (L)", + "160 MHz (U)", + "160 MHz (LL)", + "160 MHz (LU)", + "160 MHz (UL)", + "160 MHz (UU)", + "160 MHz (LLL)", + "160 MHz (LLU)", + "160 MHz (LUL)", + "160 MHz (UUU)", + "160 MHz (ULL)", + "160 MHz (ULU)", + "160 MHz (UUL)", + "160 MHz (UUU)", + "unknown (26)", + "unknown (27)", + "unknown (28)", + "unknown (29)", + "unknown (30)", + "unknown (31)" + }; + + rc = cpack_uint16(ndo, s, &known); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &flags); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &bandwidth); + if (rc != 0) + goto trunc; + for (i = 0; i < 4; i++) { + rc = cpack_uint8(ndo, s, &mcs_nss[i]); + if (rc != 0) + goto trunc; + } + rc = cpack_uint8(ndo, s, &coding); + if (rc != 0) + goto trunc; + rc = cpack_uint8(ndo, s, &group_id); + if (rc != 0) + goto trunc; + rc = cpack_uint16(ndo, s, &partial_aid); + if (rc != 0) + goto trunc; + for (i = 0; i < 4; i++) { + u_int nss, mcs; + nss = mcs_nss[i] & IEEE80211_RADIOTAP_VHT_NSS_MASK; + mcs = (mcs_nss[i] & IEEE80211_RADIOTAP_VHT_MCS_MASK) >> IEEE80211_RADIOTAP_VHT_MCS_SHIFT; + + if (nss == 0) + continue; + + ND_PRINT("User %u MCS %u ", i, mcs); + ND_PRINT("%s FEC ", + (coding & (IEEE80211_RADIOTAP_CODING_LDPC_USERn << i)) ? + "LDPC" : "BCC"); + } + if (known & IEEE80211_RADIOTAP_VHT_BANDWIDTH_KNOWN) { + ND_PRINT("%s ", + vht_bandwidth[bandwidth & IEEE80211_RADIOTAP_VHT_BANDWIDTH_MASK]); + } + if (known & IEEE80211_RADIOTAP_VHT_GUARD_INTERVAL_KNOWN) { + ND_PRINT("%s GI ", + (flags & IEEE80211_RADIOTAP_VHT_SHORT_GI) ? + "short" : "long"); + } + break; + } + + default: + /* this bit indicates a field whose + * size we do not know, so we cannot + * proceed. Just print the bit number. + */ + ND_PRINT("[bit %u] ", bit); + return -1; } + return 0; + +trunc: + nd_print_trunc(ndo); + return rc; } -static u_int -ieee802_11_radio_print(netdissect_options *ndo, - const u_char *p, u_int length, u_int caplen) + +static int +print_in_radiotap_namespace(netdissect_options *ndo, + struct cpack_state *s, uint8_t *flags, + uint32_t presentflags, int bit0) { #define BITNO_32(x) (((x) >> 16) ? 16 + BITNO_16((x) >> 16) : BITNO_16((x))) #define BITNO_16(x) (((x) >> 8) ? 8 + BITNO_8((x) >> 8) : BITNO_8((x))) #define BITNO_8(x) (((x) >> 4) ? 4 + BITNO_4((x) >> 4) : BITNO_4((x))) #define BITNO_4(x) (((x) >> 2) ? 2 + BITNO_2((x) >> 2) : BITNO_2((x))) #define BITNO_2(x) (((x) & 2) ? 1 : 0) + uint32_t present, next_present; + int bitno; + enum ieee80211_radiotap_type bit; + int rc; + + for (present = presentflags; present; present = next_present) { + /* + * Clear the least significant bit that is set. + */ + next_present = present & (present - 1); + + /* + * Get the bit number, within this presence word, + * of the remaining least significant bit that + * is set. + */ + bitno = BITNO_32(present ^ next_present); + + /* + * Stop if this is one of the "same meaning + * in all presence flags" bits. + */ + if (bitno >= IEEE80211_RADIOTAP_NAMESPACE) + break; + + /* + * Get the radiotap bit number of that bit. + */ + bit = (enum ieee80211_radiotap_type)(bit0 + bitno); + + rc = print_radiotap_field(ndo, s, bit, flags, presentflags); + if (rc != 0) + return rc; + } + + return 0; +} + +u_int +ieee802_11_radio_print(netdissect_options *ndo, + const u_char *p, u_int length, u_int caplen) +{ #define BIT(n) (1U << n) #define IS_EXTENDED(__p) \ - (EXTRACT_LE_32BITS(__p) & BIT(IEEE80211_RADIOTAP_EXT)) != 0 + (GET_LE_U_4(__p) & BIT(IEEE80211_RADIOTAP_EXT)) != 0 struct cpack_state cpacker; - struct ieee80211_radiotap_header *hdr; - uint32_t present, next_present; - uint32_t presentflags = 0; - uint32_t *presentp, *last_presentp; - enum ieee80211_radiotap_type bit; + const struct ieee80211_radiotap_header *hdr; + uint32_t presentflags; + const nd_uint32_t *presentp, *last_presentp; + int vendor_namespace; + uint8_t vendor_oui[3]; + uint8_t vendor_subnamespace; + uint16_t skip_length; int bit0; u_int len; uint8_t flags; int pad; u_int fcslen; - struct radiotap_state state; + ndo->ndo_protocol = "802.11_radio"; if (caplen < sizeof(*hdr)) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } - hdr = (struct ieee80211_radiotap_header *)p; + hdr = (const struct ieee80211_radiotap_header *)p; - len = EXTRACT_LE_16BITS(&hdr->it_len); + len = GET_LE_U_2(hdr->it_len); + if (len < sizeof(*hdr)) { + /* + * The length is the length of the entire header, so + * it must be as large as the fixed-length part of + * the header. + */ + nd_print_trunc(ndo); + return caplen; + } + /* + * If we don't have the entire radiotap header, just give up. + */ if (caplen < len) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } - cpack_init(&cpacker, (uint8_t *)hdr, len); /* align against header start */ + cpack_init(&cpacker, (const uint8_t *)hdr, len); /* align against header start */ cpack_advance(&cpacker, sizeof(*hdr)); /* includes the 1st bitmap */ for (last_presentp = &hdr->it_present; - IS_EXTENDED(last_presentp) && - (u_char*)(last_presentp + 1) <= p + len; + (const u_char*)(last_presentp + 1) <= p + len && + IS_EXTENDED(last_presentp); last_presentp++) cpack_advance(&cpacker, sizeof(hdr->it_present)); /* more bitmaps */ /* are there more bitmap extensions than bytes in header? */ - if (IS_EXTENDED(last_presentp)) { - ND_PRINT((ndo, "%s", tstr)); + if ((const u_char*)(last_presentp + 1) > p + len) { + nd_print_trunc(ndo); return caplen; } + /* + * Start out at the beginning of the default radiotap namespace. + */ + bit0 = 0; + vendor_namespace = 0; + memset(vendor_oui, 0, 3); + vendor_subnamespace = 0; + skip_length = 0; /* Assume no flags */ flags = 0; /* Assume no Atheros padding between 802.11 header and body */ pad = 0; /* Assume no FCS at end of frame */ fcslen = 0; - for (bit0 = 0, presentp = &hdr->it_present; presentp <= last_presentp; - presentp++, bit0 += 32) { - presentflags = EXTRACT_LE_32BITS(presentp); + for (presentp = &hdr->it_present; presentp <= last_presentp; + presentp++) { + presentflags = GET_LE_U_4(presentp); - /* Clear state. */ - memset(&state, 0, sizeof(state)); + /* + * If this is a vendor namespace, we don't handle it. + */ + if (vendor_namespace) { + /* + * Skip past the stuff we don't understand. + * If we add support for any vendor namespaces, + * it'd be added here; use vendor_oui and + * vendor_subnamespace to interpret the fields. + */ + if (cpack_advance(&cpacker, skip_length) != 0) { + /* + * Ran out of space in the packet. + */ + break; + } - for (present = EXTRACT_LE_32BITS(presentp); present; - present = next_present) { - /* clear the least significant bit that is set */ - next_present = present & (present - 1); + /* + * We've skipped it all; nothing more to + * skip. + */ + skip_length = 0; + } else { + if (print_in_radiotap_namespace(ndo, &cpacker, + &flags, presentflags, bit0) != 0) { + /* + * Fatal error - can't process anything + * more in the radiotap header. + */ + break; + } + } - /* extract the least significant bit that is set */ - bit = (enum ieee80211_radiotap_type) - (bit0 + BITNO_32(present ^ next_present)); + /* + * Handle the namespace switch bits; we've already handled + * the extension bit in all but the last word above. + */ + switch (presentflags & + (BIT(IEEE80211_RADIOTAP_NAMESPACE)|BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE))) { + + case 0: + /* + * We're not changing namespaces. + * advance to the next 32 bits in the current + * namespace. + */ + bit0 += 32; + break; + + case BIT(IEEE80211_RADIOTAP_NAMESPACE): + /* + * We're switching to the radiotap namespace. + * Reset the presence-bitmap index to 0, and + * reset the namespace to the default radiotap + * namespace. + */ + bit0 = 0; + vendor_namespace = 0; + memset(vendor_oui, 0, 3); + vendor_subnamespace = 0; + skip_length = 0; + break; + + case BIT(IEEE80211_RADIOTAP_VENDOR_NAMESPACE): + /* + * We're switching to a vendor namespace. + * Reset the presence-bitmap index to 0, + * note that we're in a vendor namespace, + * and fetch the fields of the Vendor Namespace + * item. + */ + bit0 = 0; + vendor_namespace = 1; + if ((cpack_align_and_reserve(&cpacker, 2)) == NULL) { + nd_print_trunc(ndo); + break; + } + if (cpack_uint8(ndo, &cpacker, &vendor_oui[0]) != 0) { + nd_print_trunc(ndo); + break; + } + if (cpack_uint8(ndo, &cpacker, &vendor_oui[1]) != 0) { + nd_print_trunc(ndo); + break; + } + if (cpack_uint8(ndo, &cpacker, &vendor_oui[2]) != 0) { + nd_print_trunc(ndo); + break; + } + if (cpack_uint8(ndo, &cpacker, &vendor_subnamespace) != 0) { + nd_print_trunc(ndo); + break; + } + if (cpack_uint16(ndo, &cpacker, &skip_length) != 0) { + nd_print_trunc(ndo); + break; + } + break; - if (print_radiotap_field(ndo, &cpacker, bit, &flags, &state, presentflags) != 0) - goto out; + default: + /* + * Illegal combination. The behavior in this + * case is undefined by the radiotap spec; we + * just ignore both bits. + */ + break; } } -out: if (flags & IEEE80211_RADIOTAP_F_DATAPAD) pad = 1; /* Atheros padding */ if (flags & IEEE80211_RADIOTAP_F_FCS) @@ -2916,29 +3270,30 @@ out: } static u_int -ieee802_11_avs_radio_print(netdissect_options *ndo, - const u_char *p, u_int length, u_int caplen) +ieee802_11_radio_avs_print(netdissect_options *ndo, + const u_char *p, u_int length, u_int caplen) { uint32_t caphdr_len; + ndo->ndo_protocol = "802.11_radio_avs"; if (caplen < 8) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } - caphdr_len = EXTRACT_32BITS(p + 4); + caphdr_len = GET_BE_U_4(p + 4); if (caphdr_len < 8) { /* * Yow! The capture header length is claimed not * to be large enough to include even the version * cookie or capture header length! */ - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } if (caplen < caphdr_len) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } @@ -2967,24 +3322,25 @@ ieee802_11_avs_radio_print(netdissect_options *ndo, */ u_int prism_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { u_int caplen = h->caplen; u_int length = h->len; uint32_t msgcode; + ndo->ndo_protocol = "prism_if"; if (caplen < 4) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } - msgcode = EXTRACT_32BITS(p); + msgcode = GET_BE_U_4(p); if (msgcode == WLANCAP_MAGIC_COOKIE_V1 || msgcode == WLANCAP_MAGIC_COOKIE_V2) - return ieee802_11_avs_radio_print(ndo, p, length, caplen); + return ieee802_11_radio_avs_print(ndo, p, length, caplen); if (caplen < PRISM_HDR_LEN) { - ND_PRINT((ndo, "%s", tstr)); + nd_print_trunc(ndo); return caplen; } @@ -2998,8 +3354,9 @@ prism_if_print(netdissect_options *ndo, */ u_int ieee802_11_radio_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { + ndo->ndo_protocol = "802.11_radio_if"; return ieee802_11_radio_print(ndo, p, h->len, h->caplen); } @@ -3010,7 +3367,8 @@ ieee802_11_radio_if_print(netdissect_options *ndo, */ u_int ieee802_11_radio_avs_if_print(netdissect_options *ndo, - const struct pcap_pkthdr *h, const u_char *p) + const struct pcap_pkthdr *h, const u_char *p) { - return ieee802_11_avs_radio_print(ndo, p, h->len, h->caplen); + ndo->ndo_protocol = "802.11_radio_avs_if"; + return ieee802_11_radio_avs_print(ndo, p, h->len, h->caplen); }