1600 lines
70 KiB
C
1600 lines
70 KiB
C
/*
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* packet-ppi.c
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* Routines for PPI Packet Header dissection
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2007 Gerald Combs
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*
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* Copyright (c) 2006 CACE Technologies, Davis (California)
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* All rights reserved.
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*
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* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
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*
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*
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* Dustin Johnson - Dustin@Dustinj.us, Dustin.Johnson@cacetech.com
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* May 7, 2008 - Added 'Aggregation Extension' and '802.3 Extension'
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/capture_dissectors.h>
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#include <epan/exceptions.h>
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#include <epan/ptvcursor.h>
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#include <epan/prefs.h>
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#include <epan/expert.h>
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#include <epan/reassemble.h>
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#include <wsutil/802_11-utils.h>
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#include <wsutil/pint.h>
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#include <wsutil/str_util.h>
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/*
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* Per-Packet Information (PPI) header.
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* See the PPI Packet Header documentation at
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*
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* https://wayback.archive.org/web/20120525190041/https://www.cacetech.com/documents/PPI%20Header%20format%201.0.10.pdf
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*
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* for details.
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*/
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/*
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* PPI headers have the following format:
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*
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* ,---------------------------------------------------------.
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* | PPH | PFH 1 | Field data 1 | PFH 2 | Field data 2 | ... |
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* `---------------------------------------------------------'
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*
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* The PPH struct has the following format:
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*
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* typedef struct ppi_packetheader {
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* guint8 pph_version; // Version. Currently 0
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* guint8 pph_flags; // Flags.
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* guint16 pph_len; // Length of entire message, including this header and TLV payload.
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* guint32 pph_dlt; // libpcap Data Link Type of the captured packet data.
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* } ppi_packetheader_t;
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*
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* The PFH struct has the following format:
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*
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* typedef struct ppi_fieldheader {
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* guint16 pfh_type; // Type
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* guint16 pfh_datalen; // Length of data
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* } ppi_fieldheader_t;
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*
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* Anyone looking to add their own PPI dissector would probably do well to imitate the GPS
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* ones separation into a distinct file. Here is a step by step guide:
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* 1) add the number you received to the enum ppi_field_type declaration.
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* 2) Add a value string for your number into vs_ppi_field_type
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* 3) declare a dissector handle by the ppi_gps_handle, and initialize it inside proto_reg_handoff
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* 4) add case inside dissect_ppi to call your new handle.
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* 5) Write your parser, and get it loaded.
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* Following these steps will result in less churn inside the ppi proper parser, and avoid namespace issues.
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*/
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#define PPI_PADDED (1 << 0)
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#define PPI_V0_HEADER_LEN 8
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#define PPI_80211_COMMON_LEN 20
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#define PPI_80211N_MAC_LEN 12
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#define PPI_80211N_MAC_PHY_OFF 9
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#define PPI_80211N_MAC_PHY_LEN 48
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#define PPI_AGGREGATION_EXTENSION_LEN 4
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#define PPI_8023_EXTENSION_LEN 8
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#define PPI_FLAG_ALIGN 0x01
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#define IS_PPI_FLAG_ALIGN(x) ((x) & PPI_FLAG_ALIGN)
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#define DOT11_FLAG_HAVE_FCS 0x0001
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#define DOT11_FLAG_TSF_TIMER_MS 0x0002
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#define DOT11_FLAG_FCS_INVALID 0x0004
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#define DOT11_FLAG_PHY_ERROR 0x0008
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#define DOT11N_FLAG_GREENFIELD 0x0001
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#define DOT11N_FLAG_HT40 0x0002
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#define DOT11N_FLAG_SHORT_GI 0x0004
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#define DOT11N_FLAG_DUPLICATE_RX 0x0008
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#define DOT11N_FLAG_IS_AGGREGATE 0x0010
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#define DOT11N_FLAG_MORE_AGGREGATES 0x0020
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#define DOT11N_FLAG_AGG_CRC_ERROR 0x0040
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#define DOT11N_IS_AGGREGATE(flags) (flags & DOT11N_FLAG_IS_AGGREGATE)
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#define DOT11N_MORE_AGGREGATES(flags) ( \
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(flags & DOT11N_FLAG_MORE_AGGREGATES) && \
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!(flags & DOT11N_FLAG_AGG_CRC_ERROR))
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#define AGGREGATE_MAX 65535
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#define AMPDU_MAX 16383
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/* XXX - Start - Copied from packet-radiotap.c */
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/* Channel flags. */
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#define IEEE80211_CHAN_TURBO 0x0010 /* Turbo channel */
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#define IEEE80211_CHAN_CCK 0x0020 /* CCK channel */
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#define IEEE80211_CHAN_OFDM 0x0040 /* OFDM channel */
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#define IEEE80211_CHAN_2GHZ 0x0080 /* 2 GHz spectrum channel. */
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#define IEEE80211_CHAN_5GHZ 0x0100 /* 5 GHz spectrum channel */
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#define IEEE80211_CHAN_PASSIVE 0x0200 /* Only passive scan allowed */
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#define IEEE80211_CHAN_DYN 0x0400 /* Dynamic CCK-OFDM channel */
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#define IEEE80211_CHAN_GFSK 0x0800 /* GFSK channel (FHSS PHY) */
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#define IEEE80211_CHAN_ALL \
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(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
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IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN)
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#define IEEE80211_CHAN_ALLTURBO \
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(IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO)
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/*
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* Useful combinations of channel characteristics.
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*/
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#define IEEE80211_CHAN_FHSS \
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(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
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#define IEEE80211_CHAN_DSSS \
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(IEEE80211_CHAN_2GHZ)
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#define IEEE80211_CHAN_A \
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(IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
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#define IEEE80211_CHAN_B \
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(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
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#define IEEE80211_CHAN_PUREG \
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(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
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#define IEEE80211_CHAN_G \
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(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
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#define IEEE80211_CHAN_108A \
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(IEEE80211_CHAN_A | IEEE80211_CHAN_TURBO)
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#define IEEE80211_CHAN_108G \
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(IEEE80211_CHAN_G | IEEE80211_CHAN_TURBO)
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#define IEEE80211_CHAN_108PUREG \
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(IEEE80211_CHAN_PUREG | IEEE80211_CHAN_TURBO)
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/* XXX - End - Copied from packet-radiotap.c */
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void proto_register_ppi(void);
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void proto_reg_handoff_ppi(void);
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typedef enum {
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/* 0 - 29999: Public types */
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PPI_80211_COMMON = 2,
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PPI_80211N_MAC = 3,
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PPI_80211N_MAC_PHY = 4,
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PPI_SPECTRUM_MAP = 5,
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PPI_PROCESS_INFO = 6,
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PPI_CAPTURE_INFO = 7,
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PPI_AGGREGATION_EXTENSION = 8,
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PPI_8023_EXTENSION = 9,
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/* 11 - 29999: RESERVED */
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/* 30000 - 65535: Private types */
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INTEL_CORP_PRIVATE = 30000,
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MOHAMED_THAGA_PRIVATE = 30001,
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PPI_GPS_INFO = 30002, /* 30002 - 30005 described in PPI-GEOLOCATION specifcation */
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PPI_VECTOR_INFO = 30003, /* currently available in draft from. jellch@harris.com */
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PPI_SENSOR_INFO = 30004,
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PPI_ANTENNA_INFO = 30005,
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FNET_PRIVATE = 0xC017,
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CACE_PRIVATE = 0xCACE
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/* All others RESERVED. Contact the WinPcap team for an assignment */
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} ppi_field_type;
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/* Protocol */
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static int proto_ppi = -1;
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/* Packet header */
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static int hf_ppi_head_version = -1;
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static int hf_ppi_head_flags = -1;
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static int hf_ppi_head_flag_alignment = -1;
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static int hf_ppi_head_flag_reserved = -1;
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static int hf_ppi_head_len = -1;
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static int hf_ppi_head_dlt = -1;
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/* Field header */
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static int hf_ppi_field_type = -1;
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static int hf_ppi_field_len = -1;
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/* 802.11 Common */
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static int hf_80211_common_tsft = -1;
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static int hf_80211_common_flags = -1;
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static int hf_80211_common_flags_fcs = -1;
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static int hf_80211_common_flags_tsft = -1;
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static int hf_80211_common_flags_fcs_valid = -1;
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static int hf_80211_common_flags_phy_err = -1;
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static int hf_80211_common_rate = -1;
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static int hf_80211_common_chan_freq = -1;
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static int hf_80211_common_chan_flags = -1;
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static int hf_80211_common_chan_flags_turbo = -1;
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static int hf_80211_common_chan_flags_cck = -1;
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static int hf_80211_common_chan_flags_ofdm = -1;
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static int hf_80211_common_chan_flags_2ghz = -1;
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static int hf_80211_common_chan_flags_5ghz = -1;
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static int hf_80211_common_chan_flags_passive = -1;
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static int hf_80211_common_chan_flags_dynamic = -1;
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static int hf_80211_common_chan_flags_gfsk = -1;
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static int hf_80211_common_fhss_hopset = -1;
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static int hf_80211_common_fhss_pattern = -1;
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static int hf_80211_common_dbm_antsignal = -1;
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static int hf_80211_common_dbm_antnoise = -1;
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/* 802.11n MAC */
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static int hf_80211n_mac_flags = -1;
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static int hf_80211n_mac_flags_greenfield = -1;
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static int hf_80211n_mac_flags_ht20_40 = -1;
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static int hf_80211n_mac_flags_rx_guard_interval = -1;
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static int hf_80211n_mac_flags_duplicate_rx = -1;
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static int hf_80211n_mac_flags_more_aggregates = -1;
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static int hf_80211n_mac_flags_aggregate = -1;
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static int hf_80211n_mac_flags_delimiter_crc_after = -1;
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static int hf_80211n_mac_ampdu_id = -1;
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static int hf_80211n_mac_num_delimiters = -1;
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static int hf_80211n_mac_reserved = -1;
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/* 802.11n MAC+PHY */
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static int hf_80211n_mac_phy_mcs = -1;
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static int hf_80211n_mac_phy_num_streams = -1;
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static int hf_80211n_mac_phy_rssi_combined = -1;
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static int hf_80211n_mac_phy_rssi_ant0_ctl = -1;
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static int hf_80211n_mac_phy_rssi_ant1_ctl = -1;
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static int hf_80211n_mac_phy_rssi_ant2_ctl = -1;
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static int hf_80211n_mac_phy_rssi_ant3_ctl = -1;
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static int hf_80211n_mac_phy_rssi_ant0_ext = -1;
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static int hf_80211n_mac_phy_rssi_ant1_ext = -1;
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static int hf_80211n_mac_phy_rssi_ant2_ext = -1;
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static int hf_80211n_mac_phy_rssi_ant3_ext = -1;
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static int hf_80211n_mac_phy_ext_chan_freq = -1;
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static int hf_80211n_mac_phy_ext_chan_flags = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_turbo = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_cck = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_ofdm = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_2ghz = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_5ghz = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_passive = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_dynamic = -1;
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static int hf_80211n_mac_phy_ext_chan_flags_gfsk = -1;
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static int hf_80211n_mac_phy_dbm_ant0signal = -1;
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static int hf_80211n_mac_phy_dbm_ant0noise = -1;
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static int hf_80211n_mac_phy_dbm_ant1signal = -1;
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static int hf_80211n_mac_phy_dbm_ant1noise = -1;
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static int hf_80211n_mac_phy_dbm_ant2signal = -1;
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static int hf_80211n_mac_phy_dbm_ant2noise = -1;
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static int hf_80211n_mac_phy_dbm_ant3signal = -1;
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static int hf_80211n_mac_phy_dbm_ant3noise = -1;
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static int hf_80211n_mac_phy_evm0 = -1;
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static int hf_80211n_mac_phy_evm1 = -1;
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static int hf_80211n_mac_phy_evm2 = -1;
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static int hf_80211n_mac_phy_evm3 = -1;
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/* 802.11n-Extensions A-MPDU fragments */
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static int hf_ampdu_reassembled_in = -1;
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/* static int hf_ampdu_segments = -1; */
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static int hf_ampdu_segment = -1;
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static int hf_ampdu_count = -1;
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/* Spectrum-Map */
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static int hf_spectrum_map = -1;
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/* Process-Info */
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static int hf_process_info = -1;
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/* Capture-Info */
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static int hf_capture_info = -1;
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/* Aggregation Extension */
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static int hf_aggregation_extension_interface_id = -1;
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/* 802.3 Extension */
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static int hf_8023_extension_flags = -1;
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static int hf_8023_extension_flags_fcs_present = -1;
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static int hf_8023_extension_errors = -1;
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static int hf_8023_extension_errors_fcs = -1;
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static int hf_8023_extension_errors_sequence = -1;
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static int hf_8023_extension_errors_symbol = -1;
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static int hf_8023_extension_errors_data = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_ppi_antenna = -1;
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static int hf_ppi_harris = -1;
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static int hf_ppi_reserved = -1;
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static int hf_ppi_vector = -1;
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static int hf_ppi_fnet = -1;
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static int hf_ppi_gps = -1;
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static gint ett_ppi_pph = -1;
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static gint ett_ppi_flags = -1;
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static gint ett_dot11_common = -1;
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static gint ett_dot11_common_flags = -1;
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static gint ett_dot11_common_channel_flags = -1;
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static gint ett_dot11n_mac = -1;
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static gint ett_dot11n_mac_flags = -1;
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static gint ett_dot11n_mac_phy = -1;
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static gint ett_dot11n_mac_phy_ext_channel_flags = -1;
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static gint ett_ampdu_segments = -1;
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static gint ett_ampdu = -1;
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static gint ett_ampdu_segment = -1;
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static gint ett_aggregation_extension = -1;
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static gint ett_8023_extension = -1;
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static gint ett_8023_extension_flags = -1;
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static gint ett_8023_extension_errors = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static expert_field ei_ppi_invalid_length = EI_INIT;
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static dissector_handle_t ppi_handle;
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static dissector_handle_t ieee80211_radio_handle;
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static dissector_handle_t pcap_pktdata_handle;
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static dissector_handle_t ppi_gps_handle, ppi_vector_handle, ppi_sensor_handle, ppi_antenna_handle;
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static dissector_handle_t ppi_fnet_handle;
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static const true_false_string tfs_ppi_head_flag_alignment = { "32-bit aligned", "Not aligned" };
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static const true_false_string tfs_tsft_ms = { "milliseconds", "microseconds" };
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static const true_false_string tfs_ht20_40 = { "HT40", "HT20" };
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static const true_false_string tfs_phy_error = { "PHY error", "No errors"};
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static const value_string vs_ppi_field_type[] = {
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{PPI_80211_COMMON, "802.11-Common"},
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{PPI_80211N_MAC, "802.11n MAC Extensions"},
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{PPI_80211N_MAC_PHY, "802.11n MAC+PHY Extensions"},
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{PPI_SPECTRUM_MAP, "Spectrum-Map"},
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{PPI_PROCESS_INFO, "Process-Info"},
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{PPI_CAPTURE_INFO, "Capture-Info"},
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{PPI_AGGREGATION_EXTENSION, "Aggregation Extension"},
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{PPI_8023_EXTENSION, "802.3 Extension"},
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{INTEL_CORP_PRIVATE, "Intel Corporation (private)"},
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{MOHAMED_THAGA_PRIVATE, "Mohamed Thaga (private)"},
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{PPI_GPS_INFO, "GPS Tagging"},
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{PPI_VECTOR_INFO, "Vector Tagging"},
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{PPI_SENSOR_INFO, "Sensor tagging"},
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{PPI_ANTENNA_INFO, "Antenna Tagging"},
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{FNET_PRIVATE, "FlukeNetworks (private)"},
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{CACE_PRIVATE, "CACE Technologies (private)"},
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{0, NULL}
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};
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/* Table for A-MPDU reassembly */
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static reassembly_table ampdu_reassembly_table;
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/* Reassemble A-MPDUs? */
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static gboolean ppi_ampdu_reassemble = TRUE;
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static gboolean
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capture_ppi(const guchar *pd, int offset _U_, int len, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header _U_)
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{
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guint32 dlt;
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guint ppi_len;
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ppi_len = pletoh16(pd+2);
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if(ppi_len < PPI_V0_HEADER_LEN || !BYTES_ARE_IN_FRAME(0, len, ppi_len))
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return FALSE;
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dlt = pletoh32(pd+4);
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return try_capture_dissector("ppi", dlt, pd, ppi_len, len, cpinfo, pseudo_header);
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}
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static void
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ptvcursor_add_invalid_check(ptvcursor_t *csr, int hf, gint len, guint64 invalid_val) {
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proto_item *ti;
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guint64 val = invalid_val;
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switch (len) {
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case 8:
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val = tvb_get_letoh64(ptvcursor_tvbuff(csr),
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ptvcursor_current_offset(csr));
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break;
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case 4:
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val = tvb_get_letohl(ptvcursor_tvbuff(csr),
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ptvcursor_current_offset(csr));
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break;
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case 2:
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val = tvb_get_letohs(ptvcursor_tvbuff(csr),
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ptvcursor_current_offset(csr));
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break;
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case 1:
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val = tvb_get_guint8(ptvcursor_tvbuff(csr),
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ptvcursor_current_offset(csr));
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break;
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default:
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DISSECTOR_ASSERT_NOT_REACHED();
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}
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ti = ptvcursor_add(csr, hf, len, ENC_LITTLE_ENDIAN);
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if (val == invalid_val)
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proto_item_append_text(ti, " [invalid]");
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}
|
|
|
|
static void
|
|
add_ppi_field_header(tvbuff_t *tvb, proto_tree *tree, int *offset)
|
|
{
|
|
ptvcursor_t *csr;
|
|
|
|
csr = ptvcursor_new(wmem_packet_scope(), tree, tvb, *offset);
|
|
ptvcursor_add(csr, hf_ppi_field_type, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_ppi_field_len, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_free(csr);
|
|
*offset=ptvcursor_current_offset(csr);
|
|
}
|
|
|
|
/* XXX - The main dissection function in the 802.11 dissector has the same name. */
|
|
static void
|
|
dissect_80211_common(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int data_len, struct ieee_802_11_phdr *phdr)
|
|
{
|
|
proto_tree *ftree;
|
|
proto_item *ti;
|
|
ptvcursor_t *csr;
|
|
guint64 tsft_raw;
|
|
guint rate_raw;
|
|
guint rate_kbps;
|
|
guint32 common_flags;
|
|
guint16 common_frequency;
|
|
guint16 chan_flags;
|
|
gint8 dbm_value;
|
|
gchar *chan_str;
|
|
|
|
ftree = proto_tree_add_subtree(tree, tvb, offset, data_len, ett_dot11_common, NULL, "802.11-Common");
|
|
add_ppi_field_header(tvb, ftree, &offset);
|
|
data_len -= 4; /* Subtract field header length */
|
|
|
|
if (data_len != PPI_80211_COMMON_LEN) {
|
|
proto_tree_add_expert_format(ftree, pinfo, &ei_ppi_invalid_length, tvb, offset, data_len, "Invalid length: %u", data_len);
|
|
return;
|
|
}
|
|
|
|
common_flags = tvb_get_letohs(tvb, offset + 8);
|
|
if (common_flags & DOT11_FLAG_HAVE_FCS)
|
|
phdr->fcs_len = 4;
|
|
else
|
|
phdr->fcs_len = 0;
|
|
|
|
csr = ptvcursor_new(pinfo->pool, ftree, tvb, offset);
|
|
|
|
tsft_raw = tvb_get_letoh64(tvb, offset);
|
|
if (tsft_raw != 0) {
|
|
phdr->has_tsf_timestamp = TRUE;
|
|
if (common_flags & DOT11_FLAG_TSF_TIMER_MS)
|
|
phdr->tsf_timestamp = tsft_raw * 1000;
|
|
else
|
|
phdr->tsf_timestamp = tsft_raw;
|
|
}
|
|
|
|
ptvcursor_add_invalid_check(csr, hf_80211_common_tsft, 8, 0);
|
|
|
|
ptvcursor_add_with_subtree(csr, hf_80211_common_flags, 2, ENC_LITTLE_ENDIAN,
|
|
ett_dot11_common_flags);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_flags_fcs, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_flags_tsft, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_flags_fcs_valid, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_80211_common_flags_phy_err, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
rate_raw = tvb_get_letohs(tvb, ptvcursor_current_offset(csr));
|
|
if (rate_raw != 0) {
|
|
phdr->has_data_rate = TRUE;
|
|
phdr->data_rate = rate_raw;
|
|
}
|
|
rate_kbps = rate_raw * 500;
|
|
ti = proto_tree_add_uint_format(ftree, hf_80211_common_rate, tvb,
|
|
ptvcursor_current_offset(csr), 2, rate_kbps, "Rate: %.1f Mbps",
|
|
rate_kbps / 1000.0);
|
|
if (rate_kbps == 0)
|
|
proto_item_append_text(ti, " [invalid]");
|
|
col_add_fstr(pinfo->cinfo, COL_TX_RATE, "%.1f Mbps", rate_kbps / 1000.0);
|
|
ptvcursor_advance(csr, 2);
|
|
|
|
common_frequency = tvb_get_letohs(ptvcursor_tvbuff(csr), ptvcursor_current_offset(csr));
|
|
if (common_frequency != 0) {
|
|
gint calc_channel;
|
|
|
|
phdr->has_frequency = TRUE;
|
|
phdr->frequency = common_frequency;
|
|
calc_channel = ieee80211_mhz_to_chan(common_frequency);
|
|
if (calc_channel != -1) {
|
|
phdr->has_channel = TRUE;
|
|
phdr->channel = calc_channel;
|
|
}
|
|
}
|
|
chan_str = ieee80211_mhz_to_str(common_frequency);
|
|
proto_tree_add_uint_format_value(ptvcursor_tree(csr), hf_80211_common_chan_freq, ptvcursor_tvbuff(csr),
|
|
ptvcursor_current_offset(csr), 2, common_frequency, "%s", chan_str);
|
|
col_add_fstr(pinfo->cinfo, COL_FREQ_CHAN, "%s", chan_str);
|
|
g_free(chan_str);
|
|
ptvcursor_advance(csr, 2);
|
|
|
|
memset(&phdr->phy_info, 0, sizeof(phdr->phy_info));
|
|
chan_flags = tvb_get_letohs(ptvcursor_tvbuff(csr), ptvcursor_current_offset(csr));
|
|
switch (chan_flags & IEEE80211_CHAN_ALLTURBO) {
|
|
|
|
case IEEE80211_CHAN_FHSS:
|
|
phdr->phy = PHDR_802_11_PHY_11_FHSS;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_DSSS:
|
|
phdr->phy = PHDR_802_11_PHY_11_DSSS;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_A:
|
|
phdr->phy = PHDR_802_11_PHY_11A;
|
|
phdr->phy_info.info_11a.has_turbo_type = TRUE;
|
|
phdr->phy_info.info_11a.turbo_type = PHDR_802_11A_TURBO_TYPE_NORMAL;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_B:
|
|
phdr->phy = PHDR_802_11_PHY_11B;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_PUREG:
|
|
phdr->phy = PHDR_802_11_PHY_11G;
|
|
phdr->phy_info.info_11g.has_mode = TRUE;
|
|
phdr->phy_info.info_11g.mode = PHDR_802_11G_MODE_NORMAL;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_G:
|
|
phdr->phy = PHDR_802_11_PHY_11G;
|
|
phdr->phy_info.info_11g.has_mode = TRUE;
|
|
phdr->phy_info.info_11g.mode = PHDR_802_11G_MODE_NORMAL;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_108A:
|
|
phdr->phy = PHDR_802_11_PHY_11A;
|
|
phdr->phy_info.info_11a.has_turbo_type = TRUE;
|
|
/* We assume non-STURBO is dynamic turbo */
|
|
phdr->phy_info.info_11a.turbo_type = PHDR_802_11A_TURBO_TYPE_DYNAMIC_TURBO;
|
|
break;
|
|
|
|
case IEEE80211_CHAN_108PUREG:
|
|
phdr->phy = PHDR_802_11_PHY_11G;
|
|
phdr->phy_info.info_11g.has_mode = TRUE;
|
|
phdr->phy_info.info_11g.mode = PHDR_802_11G_MODE_SUPER_G;
|
|
break;
|
|
}
|
|
ptvcursor_add_with_subtree(csr, hf_80211_common_chan_flags, 2, ENC_LITTLE_ENDIAN,
|
|
ett_dot11_common_channel_flags);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_turbo, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_cck, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_ofdm, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_2ghz, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_5ghz, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_passive, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211_common_chan_flags_dynamic, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_80211_common_chan_flags_gfsk, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
|
|
if (phdr->phy == PHDR_802_11_PHY_11_FHSS) {
|
|
phdr->phy_info.info_11_fhss.has_hop_set = TRUE;
|
|
phdr->phy_info.info_11_fhss.hop_set = tvb_get_guint8(ptvcursor_tvbuff(csr), ptvcursor_current_offset(csr));
|
|
}
|
|
ptvcursor_add(csr, hf_80211_common_fhss_hopset, 1, ENC_LITTLE_ENDIAN);
|
|
if (phdr->phy == PHDR_802_11_PHY_11_FHSS) {
|
|
phdr->phy_info.info_11_fhss.has_hop_pattern = TRUE;
|
|
phdr->phy_info.info_11_fhss.hop_pattern = tvb_get_guint8(ptvcursor_tvbuff(csr), ptvcursor_current_offset(csr));
|
|
}
|
|
ptvcursor_add(csr, hf_80211_common_fhss_pattern, 1, ENC_LITTLE_ENDIAN);
|
|
|
|
dbm_value = tvb_get_gint8(tvb, ptvcursor_current_offset(csr));
|
|
if (dbm_value != -128 && dbm_value != 0) {
|
|
/*
|
|
* XXX - the spec says -128 is invalid, presumably meaning "use
|
|
* -128 if you don't have the signal strength", but some captures
|
|
* have 0 for noise, presumably meaning it's incorrectly being
|
|
* used for "don't have it", so we check for it as well.
|
|
*/
|
|
col_add_fstr(pinfo->cinfo, COL_RSSI, "%d dBm", dbm_value);
|
|
phdr->has_signal_dbm = TRUE;
|
|
phdr->signal_dbm = dbm_value;
|
|
}
|
|
ptvcursor_add_invalid_check(csr, hf_80211_common_dbm_antsignal, 1, 0x80); /* -128 */
|
|
|
|
dbm_value = tvb_get_gint8(tvb, ptvcursor_current_offset(csr));
|
|
if (dbm_value != -128 && dbm_value != 0) {
|
|
/*
|
|
* XXX - the spec says -128 is invalid, presumably meaning "use
|
|
* -128 if you don't have the noise level", but some captures
|
|
* have 0, presumably meaning it's incorrectly being used for
|
|
* "don't have it", so we check for it as well.
|
|
*/
|
|
phdr->has_noise_dbm = TRUE;
|
|
phdr->noise_dbm = dbm_value;
|
|
}
|
|
ptvcursor_add_invalid_check(csr, hf_80211_common_dbm_antnoise, 1, 0x80);
|
|
|
|
ptvcursor_free(csr);
|
|
}
|
|
|
|
static void
|
|
dissect_80211n_mac(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset, int data_len, gboolean add_subtree, guint32 *n_mac_flags, guint32 *ampdu_id, struct ieee_802_11_phdr *phdr)
|
|
{
|
|
proto_tree *ftree = tree;
|
|
ptvcursor_t *csr;
|
|
guint32 flags;
|
|
|
|
phdr->phy = PHDR_802_11_PHY_11N;
|
|
|
|
if (add_subtree) {
|
|
ftree = proto_tree_add_subtree(tree, tvb, offset, data_len, ett_dot11n_mac, NULL, "802.11n MAC");
|
|
add_ppi_field_header(tvb, ftree, &offset);
|
|
data_len -= 4; /* Subtract field header length */
|
|
}
|
|
|
|
if (data_len != PPI_80211N_MAC_LEN) {
|
|
proto_tree_add_expert_format(ftree, pinfo, &ei_ppi_invalid_length, tvb, offset, data_len, "Invalid length: %u", data_len);
|
|
return;
|
|
}
|
|
|
|
csr = ptvcursor_new(pinfo->pool, ftree, tvb, offset);
|
|
|
|
flags = tvb_get_letohl(tvb, ptvcursor_current_offset(csr));
|
|
*n_mac_flags = flags;
|
|
phdr->phy_info.info_11n.has_bandwidth = TRUE;
|
|
phdr->phy_info.info_11n.has_short_gi = TRUE;
|
|
phdr->phy_info.info_11n.has_greenfield = TRUE;
|
|
phdr->phy_info.info_11n.bandwidth = ((flags & DOT11N_FLAG_HT40) != 0);
|
|
phdr->phy_info.info_11n.short_gi = ((flags & DOT11N_FLAG_SHORT_GI) != 0);
|
|
phdr->phy_info.info_11n.greenfield = ((flags & DOT11N_FLAG_GREENFIELD) != 0);
|
|
if (DOT11N_IS_AGGREGATE(flags)) {
|
|
phdr->has_aggregate_info = 1;
|
|
phdr->aggregate_flags = 0;
|
|
if (!(flags & DOT11N_FLAG_MORE_AGGREGATES))
|
|
phdr->aggregate_flags |= PHDR_802_11_LAST_PART_OF_A_MPDU;
|
|
if (flags & DOT11N_FLAG_AGG_CRC_ERROR)
|
|
phdr->aggregate_flags |= PHDR_802_11_A_MPDU_DELIM_CRC_ERROR;
|
|
}
|
|
ptvcursor_add_with_subtree(csr, hf_80211n_mac_flags, 4, ENC_LITTLE_ENDIAN,
|
|
ett_dot11n_mac_flags);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_greenfield, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_ht20_40, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_rx_guard_interval, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_duplicate_rx, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_aggregate, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_flags_more_aggregates, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_80211n_mac_flags_delimiter_crc_after, 4, ENC_LITTLE_ENDIAN); /* Last */
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
if (DOT11N_IS_AGGREGATE(flags)) {
|
|
*ampdu_id = tvb_get_letohl(tvb, ptvcursor_current_offset(csr));
|
|
phdr->aggregate_id = *ampdu_id;
|
|
}
|
|
ptvcursor_add(csr, hf_80211n_mac_ampdu_id, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_80211n_mac_num_delimiters, 1, ENC_LITTLE_ENDIAN);
|
|
|
|
if (add_subtree) {
|
|
ptvcursor_add(csr, hf_80211n_mac_reserved, 3, ENC_LITTLE_ENDIAN);
|
|
}
|
|
|
|
ptvcursor_free(csr);
|
|
}
|
|
|
|
static void
|
|
dissect_80211n_mac_phy(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int data_len, guint32 *n_mac_flags, guint32 *ampdu_id, struct ieee_802_11_phdr *phdr)
|
|
{
|
|
proto_tree *ftree;
|
|
proto_item *ti;
|
|
ptvcursor_t *csr;
|
|
guint8 mcs;
|
|
guint8 ness;
|
|
guint16 ext_frequency;
|
|
gchar *chan_str;
|
|
|
|
ftree = proto_tree_add_subtree(tree, tvb, offset, data_len, ett_dot11n_mac_phy, NULL, "802.11n MAC+PHY");
|
|
add_ppi_field_header(tvb, ftree, &offset);
|
|
data_len -= 4; /* Subtract field header length */
|
|
|
|
if (data_len != PPI_80211N_MAC_PHY_LEN) {
|
|
proto_tree_add_expert_format(ftree, pinfo, &ei_ppi_invalid_length, tvb, offset, data_len, "Invalid length: %u", data_len);
|
|
return;
|
|
}
|
|
|
|
dissect_80211n_mac(tvb, pinfo, ftree, offset, PPI_80211N_MAC_LEN,
|
|
FALSE, n_mac_flags, ampdu_id, phdr);
|
|
offset += PPI_80211N_MAC_PHY_OFF;
|
|
|
|
csr = ptvcursor_new(pinfo->pool, ftree, tvb, offset);
|
|
|
|
mcs = tvb_get_guint8(tvb, ptvcursor_current_offset(csr));
|
|
if (mcs != 255) {
|
|
phdr->phy_info.info_11n.has_mcs_index = TRUE;
|
|
phdr->phy_info.info_11n.mcs_index = mcs;
|
|
}
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_mcs, 1, 255);
|
|
|
|
ness = tvb_get_guint8(tvb, ptvcursor_current_offset(csr));
|
|
phdr->phy_info.info_11n.has_ness = TRUE;
|
|
phdr->phy_info.info_11n.ness = ness;
|
|
ti = ptvcursor_add(csr, hf_80211n_mac_phy_num_streams, 1, ENC_LITTLE_ENDIAN);
|
|
if (tvb_get_guint8(tvb, ptvcursor_current_offset(csr) - 1) == 0)
|
|
proto_item_append_text(ti, " (unknown)");
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_combined, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant0_ctl, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant1_ctl, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant2_ctl, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant3_ctl, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant0_ext, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant1_ext, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant2_ext, 1, 255);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_rssi_ant3_ext, 1, 255);
|
|
|
|
ext_frequency = tvb_get_letohs(ptvcursor_tvbuff(csr), ptvcursor_current_offset(csr));
|
|
chan_str = ieee80211_mhz_to_str(ext_frequency);
|
|
proto_tree_add_uint_format(ptvcursor_tree(csr), hf_80211n_mac_phy_ext_chan_freq, ptvcursor_tvbuff(csr),
|
|
ptvcursor_current_offset(csr), 2, ext_frequency, "Ext. Channel frequency: %s", chan_str);
|
|
g_free(chan_str);
|
|
ptvcursor_advance(csr, 2);
|
|
|
|
ptvcursor_add_with_subtree(csr, hf_80211n_mac_phy_ext_chan_flags, 2, ENC_LITTLE_ENDIAN,
|
|
ett_dot11n_mac_phy_ext_channel_flags);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_turbo, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_cck, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_ofdm, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_2ghz, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_5ghz, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_passive, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_80211n_mac_phy_ext_chan_flags_dynamic, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_80211n_mac_phy_ext_chan_flags_gfsk, 2, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant0signal, 1, 0x80); /* -128 */
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant0noise, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant1signal, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant1noise, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant2signal, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant2noise, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant3signal, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_dbm_ant3noise, 1, 0x80);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_evm0, 4, 0);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_evm1, 4, 0);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_evm2, 4, 0);
|
|
ptvcursor_add_invalid_check(csr, hf_80211n_mac_phy_evm3, 4, 0);
|
|
|
|
ptvcursor_free(csr);
|
|
}
|
|
|
|
static void
|
|
dissect_aggregation_extension(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset, int data_len)
|
|
{
|
|
proto_tree *ftree;
|
|
ptvcursor_t *csr;
|
|
|
|
ftree = proto_tree_add_subtree(tree, tvb, offset, data_len, ett_aggregation_extension, NULL, "Aggregation Extension");
|
|
add_ppi_field_header(tvb, ftree, &offset);
|
|
data_len -= 4; /* Subtract field header length */
|
|
|
|
if (data_len != PPI_AGGREGATION_EXTENSION_LEN) {
|
|
proto_tree_add_expert_format(ftree, pinfo, &ei_ppi_invalid_length, tvb, offset, data_len, "Invalid length: %u", data_len);
|
|
return;
|
|
}
|
|
|
|
csr = ptvcursor_new(pinfo->pool, ftree, tvb, offset);
|
|
|
|
ptvcursor_add(csr, hf_aggregation_extension_interface_id, 4, ENC_LITTLE_ENDIAN); /* Last */
|
|
ptvcursor_free(csr);
|
|
}
|
|
|
|
static void
|
|
dissect_8023_extension(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset, int data_len)
|
|
{
|
|
proto_tree *ftree;
|
|
ptvcursor_t *csr;
|
|
|
|
ftree = proto_tree_add_subtree(tree, tvb, offset, data_len, ett_8023_extension, NULL, "802.3 Extension");
|
|
add_ppi_field_header(tvb, ftree, &offset);
|
|
data_len -= 4; /* Subtract field header length */
|
|
|
|
if (data_len != PPI_8023_EXTENSION_LEN) {
|
|
proto_tree_add_expert_format(ftree, pinfo, &ei_ppi_invalid_length, tvb, offset, data_len, "Invalid length: %u", data_len);
|
|
return;
|
|
}
|
|
|
|
csr = ptvcursor_new(pinfo->pool, ftree, tvb, offset);
|
|
|
|
ptvcursor_add_with_subtree(csr, hf_8023_extension_flags, 4, ENC_LITTLE_ENDIAN, ett_8023_extension_flags);
|
|
ptvcursor_add(csr, hf_8023_extension_flags_fcs_present, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
ptvcursor_add_with_subtree(csr, hf_8023_extension_errors, 4, ENC_LITTLE_ENDIAN, ett_8023_extension_errors);
|
|
ptvcursor_add_no_advance(csr, hf_8023_extension_errors_fcs, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_8023_extension_errors_sequence, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add_no_advance(csr, hf_8023_extension_errors_symbol, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_add(csr, hf_8023_extension_errors_data, 4, ENC_LITTLE_ENDIAN);
|
|
ptvcursor_pop_subtree(csr);
|
|
|
|
ptvcursor_free(csr);
|
|
}
|
|
|
|
|
|
#define PADDING4(x) ((((x + 3) >> 2) << 2) - x)
|
|
#define ADD_BASIC_TAG(hf_tag) \
|
|
if (tree) \
|
|
proto_tree_add_item(ppi_tree, hf_tag, tvb, offset, data_len, ENC_NA)
|
|
|
|
static int
|
|
dissect_ppi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_tree *ppi_tree = NULL, *ppi_flags_tree = NULL, *seg_tree = NULL, *ampdu_tree = NULL;
|
|
proto_tree *agg_tree = NULL;
|
|
proto_item *ti = NULL;
|
|
tvbuff_t *next_tvb;
|
|
int offset = 0;
|
|
guint version, flags;
|
|
gint tot_len, data_len;
|
|
guint data_type;
|
|
guint32 dlt;
|
|
guint32 n_ext_flags = 0;
|
|
guint32 ampdu_id = 0;
|
|
fragment_head *fd_head = NULL;
|
|
fragment_item *ft_fdh = NULL;
|
|
gint mpdu_count = 0;
|
|
gchar *mpdu_str;
|
|
gboolean first_mpdu = TRUE;
|
|
guint last_frame = 0;
|
|
gint len_remain, /*pad_len = 0,*/ ampdu_len = 0;
|
|
struct ieee_802_11_phdr phdr;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PPI");
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
version = tvb_get_guint8(tvb, offset);
|
|
flags = tvb_get_guint8(tvb, offset + 1);
|
|
|
|
tot_len = tvb_get_letohs(tvb, offset+2);
|
|
dlt = tvb_get_letohl(tvb, offset+4);
|
|
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "PPI version %u, %u bytes",
|
|
version, tot_len);
|
|
|
|
/* Dissect the packet */
|
|
if (tree) {
|
|
ti = proto_tree_add_protocol_format(tree, proto_ppi,
|
|
tvb, 0, tot_len, "PPI version %u, %u bytes", version, tot_len);
|
|
ppi_tree = proto_item_add_subtree(ti, ett_ppi_pph);
|
|
proto_tree_add_item(ppi_tree, hf_ppi_head_version,
|
|
tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
|
|
ti = proto_tree_add_item(ppi_tree, hf_ppi_head_flags,
|
|
tvb, offset + 1, 1, ENC_LITTLE_ENDIAN);
|
|
ppi_flags_tree = proto_item_add_subtree(ti, ett_ppi_flags);
|
|
proto_tree_add_item(ppi_flags_tree, hf_ppi_head_flag_alignment,
|
|
tvb, offset + 1, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(ppi_flags_tree, hf_ppi_head_flag_reserved,
|
|
tvb, offset + 1, 1, ENC_LITTLE_ENDIAN);
|
|
|
|
proto_tree_add_item(ppi_tree, hf_ppi_head_len,
|
|
tvb, offset + 2, 2, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(ppi_tree, hf_ppi_head_dlt,
|
|
tvb, offset + 4, 4, ENC_LITTLE_ENDIAN);
|
|
}
|
|
|
|
tot_len -= PPI_V0_HEADER_LEN;
|
|
offset += 8;
|
|
|
|
/* We don't have any 802.11 metadata yet. */
|
|
memset(&phdr, 0, sizeof(phdr));
|
|
phdr.fcs_len = -1;
|
|
phdr.decrypted = FALSE;
|
|
phdr.datapad = FALSE;
|
|
phdr.phy = PHDR_802_11_PHY_UNKNOWN;
|
|
|
|
while (tot_len > 0) {
|
|
data_type = tvb_get_letohs(tvb, offset);
|
|
data_len = tvb_get_letohs(tvb, offset + 2) + 4;
|
|
tot_len -= data_len;
|
|
|
|
switch (data_type) {
|
|
|
|
case PPI_80211_COMMON:
|
|
dissect_80211_common(tvb, pinfo, ppi_tree, offset, data_len, &phdr);
|
|
break;
|
|
|
|
case PPI_80211N_MAC:
|
|
dissect_80211n_mac(tvb, pinfo, ppi_tree, offset, data_len,
|
|
TRUE, &n_ext_flags, &du_id, &phdr);
|
|
break;
|
|
|
|
case PPI_80211N_MAC_PHY:
|
|
dissect_80211n_mac_phy(tvb, pinfo, ppi_tree, offset,
|
|
data_len, &n_ext_flags, &du_id, &phdr);
|
|
break;
|
|
|
|
case PPI_SPECTRUM_MAP:
|
|
ADD_BASIC_TAG(hf_spectrum_map);
|
|
break;
|
|
|
|
case PPI_PROCESS_INFO:
|
|
ADD_BASIC_TAG(hf_process_info);
|
|
break;
|
|
|
|
case PPI_CAPTURE_INFO:
|
|
ADD_BASIC_TAG(hf_capture_info);
|
|
break;
|
|
|
|
case PPI_AGGREGATION_EXTENSION:
|
|
dissect_aggregation_extension(tvb, pinfo, ppi_tree, offset, data_len);
|
|
break;
|
|
|
|
case PPI_8023_EXTENSION:
|
|
dissect_8023_extension(tvb, pinfo, ppi_tree, offset, data_len);
|
|
break;
|
|
|
|
case PPI_GPS_INFO:
|
|
if (ppi_gps_handle == NULL)
|
|
{
|
|
proto_tree_add_item(ppi_tree, hf_ppi_gps, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
else /* we found a suitable dissector */
|
|
{
|
|
/* skip over the ppi_fieldheader, and pass it off to the dedicated GPS dissetor */
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset + 4, data_len - 4 , -1);
|
|
call_dissector(ppi_gps_handle, next_tvb, pinfo, ppi_tree);
|
|
}
|
|
break;
|
|
|
|
case PPI_VECTOR_INFO:
|
|
if (ppi_vector_handle == NULL)
|
|
{
|
|
proto_tree_add_item(ppi_tree, hf_ppi_vector, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
else /* we found a suitable dissector */
|
|
{
|
|
/* skip over the ppi_fieldheader, and pass it off to the dedicated VECTOR dissetor */
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset + 4, data_len - 4 , -1);
|
|
call_dissector(ppi_vector_handle, next_tvb, pinfo, ppi_tree);
|
|
}
|
|
break;
|
|
|
|
case PPI_SENSOR_INFO:
|
|
if (ppi_sensor_handle == NULL)
|
|
{
|
|
proto_tree_add_item(ppi_tree, hf_ppi_harris, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
else /* we found a suitable dissector */
|
|
{
|
|
/* skip over the ppi_fieldheader, and pass it off to the dedicated SENSOR dissetor */
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset + 4, data_len - 4 , -1);
|
|
call_dissector(ppi_sensor_handle, next_tvb, pinfo, ppi_tree);
|
|
}
|
|
break;
|
|
|
|
case PPI_ANTENNA_INFO:
|
|
if (ppi_antenna_handle == NULL)
|
|
{
|
|
proto_tree_add_item(ppi_tree, hf_ppi_antenna, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
else /* we found a suitable dissector */
|
|
{
|
|
/* skip over the ppi_fieldheader, and pass it off to the dedicated ANTENNA dissetor */
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset + 4, data_len - 4 , -1);
|
|
call_dissector(ppi_antenna_handle, next_tvb, pinfo, ppi_tree);
|
|
}
|
|
break;
|
|
|
|
case FNET_PRIVATE:
|
|
if (ppi_fnet_handle == NULL)
|
|
{
|
|
proto_tree_add_item(ppi_tree, hf_ppi_fnet, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
else /* we found a suitable dissector */
|
|
{
|
|
/* skip over the ppi_fieldheader, and pass it off to the dedicated FNET dissetor */
|
|
next_tvb = tvb_new_subset_length_caplen(tvb, offset + 4, data_len - 4 , -1);
|
|
call_dissector(ppi_fnet_handle, next_tvb, pinfo, ppi_tree);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_item(ppi_tree, hf_ppi_reserved, tvb, offset, data_len, ENC_NA);
|
|
}
|
|
|
|
offset += data_len;
|
|
if (IS_PPI_FLAG_ALIGN(flags)){
|
|
offset += PADDING4(offset);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The Channel-Flags field is described as "Radiotap-formatted
|
|
* channel flags". The comment in the radiotap.org page about
|
|
* the suggested xchannel field says:
|
|
*
|
|
* As used, this field conflates channel properties (which
|
|
* need not be stored per packet but are more or less fixed)
|
|
* with packet properties (like the modulation).
|
|
*
|
|
* The radiotap channel field, in practice, seems to be used,
|
|
* in some cases, to indicate channel properties (from which
|
|
* the packet modulation cannot be inferred) and, in other
|
|
* cases, to indicate the packet's modulation.
|
|
*
|
|
* The same applies to the Channel-Flags field. There is a capture
|
|
* in which the Channel-Flags field indicates that the channel is
|
|
* an OFDM-only channel with a center frequency of 2422 MHz, and
|
|
* the data rate field indicates a 2 Mb/s rate, which means you can't
|
|
* rely on the CCK/OFDM/dynamic CCK/OFDM bits in the channel field
|
|
* to indicate anything.
|
|
*
|
|
* That makes the Channel-Flags field unusable either for determining
|
|
* the channel type or for determining the packet modulation,
|
|
* as it cannot be determined how it's being used.
|
|
*
|
|
* Fortunately, there are other ways to determine the packet
|
|
* modulation:
|
|
*
|
|
* if there's an FHSS flag, the packet was transmitted
|
|
* using the 802.11 legacy FHSS modulation;
|
|
*
|
|
* otherwise:
|
|
*
|
|
* if there's an 802.11n MAC Extension header or an 802.11n
|
|
* MAC+PHY Extension header, the packet was transmitted using
|
|
* one of the 11n HT PHY's specified modulations;
|
|
*
|
|
* otherwise:
|
|
*
|
|
* if the data rate is 1 Mb/s or 2 Mb/s, the packet was
|
|
* transmitted using the 802.11 legacy DSSS modulation
|
|
* (we ignore the IR PHY - was it ever implemented?);
|
|
*
|
|
* if the data rate is 5 Mb/s or 11 Mb/s, the packet
|
|
* was transmitted using the 802.11b DSSS/CCK modulation
|
|
* (or the now-obsolete DSSS/PBCC modulation; *if* we can
|
|
* rely on the channel/xchannel field's "CCK channel" and
|
|
* "Dynamic CCK-OFDM channel" flags, the absence of either
|
|
* flag would presumably indicate DSSS/PBCC);
|
|
*
|
|
* if the data rate is 22 Mb/s or 33 Mb/s, the packet was
|
|
* transmitted using the 802.11b DSSS/PBCC modulation (as
|
|
* those speeds aren't supported by DSSS/CCK);
|
|
*
|
|
* if the data rate is one of the OFDM rates for the 11a
|
|
* OFDM PHY and the OFDM part of the 11g ERP PHY, the
|
|
* packet was transmitted with the 11g/11a OFDM modulation.
|
|
*
|
|
* We've already handled the 11n headers, and may have attempted
|
|
* to use the Channel-Flags field to guess the modulation. That
|
|
* guess might get the wrong answer for 11g "Dynamic CCK-OFDM"
|
|
* channels.
|
|
*
|
|
* If we have the data rate, we use it to:
|
|
*
|
|
* fix up the 11g channels;
|
|
*
|
|
* determine the modulation if we haven't been able to
|
|
* determine it any other way.
|
|
*/
|
|
if (phdr.has_data_rate) {
|
|
if (phdr.phy == PHDR_802_11_PHY_UNKNOWN) {
|
|
/*
|
|
* We don't know they PHY, but we do have the
|
|
* data rate; try to guess it based on the
|
|
* data rate and channel/center frequency.
|
|
*/
|
|
if (RATE_IS_DSSS(phdr.data_rate)) {
|
|
/* 11b */
|
|
phdr.phy = PHDR_802_11_PHY_11B;
|
|
} else if (RATE_IS_OFDM(phdr.data_rate)) {
|
|
/* 11a or 11g, depending on the band. */
|
|
if (phdr.has_frequency) {
|
|
if (FREQ_IS_BG(phdr.frequency)) {
|
|
/* 11g */
|
|
phdr.phy = PHDR_802_11_PHY_11G;
|
|
} else {
|
|
/* 11a */
|
|
phdr.phy = PHDR_802_11_PHY_11A;
|
|
}
|
|
}
|
|
}
|
|
} else if (phdr.phy == PHDR_802_11_PHY_11G) {
|
|
if (RATE_IS_DSSS(phdr.data_rate)) {
|
|
/* DSSS, so 11b. */
|
|
phdr.phy = PHDR_802_11_PHY_11B;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* There is no indication, for HR/DSSS (11b/11g), whether
|
|
* the packet had a long or short preamble.
|
|
*/
|
|
if (phdr.phy == PHDR_802_11_PHY_11B)
|
|
phdr.phy_info.info_11b.has_short_preamble = FALSE;
|
|
|
|
if (ppi_ampdu_reassemble && DOT11N_IS_AGGREGATE(n_ext_flags)) {
|
|
len_remain = tvb_captured_length_remaining(tvb, offset);
|
|
#if 0 /* XXX: pad_len never actually used ?? */
|
|
if (DOT11N_MORE_AGGREGATES(n_ext_flags)) {
|
|
pad_len = PADDING4(len_remain);
|
|
}
|
|
#endif
|
|
pinfo->fragmented = TRUE;
|
|
|
|
/* Make sure we aren't going to go past AGGREGATE_MAX
|
|
* and caclulate our full A-MPDU length */
|
|
fd_head = fragment_get(&du_reassembly_table, pinfo, ampdu_id, NULL);
|
|
if (fd_head) {
|
|
for (ft_fdh = fd_head->next; ft_fdh; ft_fdh = ft_fdh->next) {
|
|
ampdu_len += ft_fdh->len + PADDING4(ft_fdh->len) + 4;
|
|
}
|
|
}
|
|
if (ampdu_len > AGGREGATE_MAX) {
|
|
proto_tree_add_expert_format(ppi_tree, pinfo, &ei_ppi_invalid_length, tvb, offset, -1, "Aggregate length greater than maximum (%u)", AGGREGATE_MAX);
|
|
return offset;
|
|
}
|
|
|
|
/*
|
|
* Note that we never actually reassemble our A-MPDUs. Doing
|
|
* so would require prepending each MPDU with an A-MPDU delimiter
|
|
* and appending it with padding, only to hand it off to some
|
|
* routine which would un-do the work we just did. We're using
|
|
* the reassembly code to track MPDU sizes and frame numbers.
|
|
*/
|
|
/*??fd_head = */fragment_add_seq_next(&du_reassembly_table,
|
|
tvb, offset, pinfo, ampdu_id, NULL, len_remain, TRUE);
|
|
pinfo->fragmented = TRUE;
|
|
|
|
/* Do reassembly? */
|
|
fd_head = fragment_get(&du_reassembly_table, pinfo, ampdu_id, NULL);
|
|
|
|
/* Show our fragments */
|
|
if (fd_head && tree) {
|
|
ft_fdh = fd_head->next;
|
|
/* List our fragments */
|
|
seg_tree = proto_tree_add_subtree_format(ppi_tree, tvb, offset, -1,
|
|
ett_ampdu_segments, &ti, "A-MPDU (%u bytes w/hdrs):", ampdu_len);
|
|
proto_item_set_generated(ti);
|
|
|
|
while (ft_fdh) {
|
|
if (ft_fdh->tvb_data && ft_fdh->len) {
|
|
last_frame = ft_fdh->frame;
|
|
if (!first_mpdu)
|
|
proto_item_append_text(ti, ",");
|
|
first_mpdu = FALSE;
|
|
proto_item_append_text(ti, " #%u(%u)",
|
|
ft_fdh->frame, ft_fdh->len);
|
|
proto_tree_add_uint_format(seg_tree, hf_ampdu_segment,
|
|
tvb, 0, 0, last_frame,
|
|
"Frame: %u (%u byte%s)",
|
|
last_frame,
|
|
ft_fdh->len,
|
|
plurality(ft_fdh->len, "", "s"));
|
|
}
|
|
ft_fdh = ft_fdh->next;
|
|
}
|
|
if (last_frame && last_frame != pinfo->num)
|
|
proto_tree_add_uint(seg_tree, hf_ampdu_reassembled_in,
|
|
tvb, 0, 0, last_frame);
|
|
}
|
|
|
|
if (fd_head && !DOT11N_MORE_AGGREGATES(n_ext_flags)) {
|
|
if (tree) {
|
|
ti = proto_tree_add_protocol_format(tree,
|
|
proto_get_id_by_filter_name("wlan_aggregate"),
|
|
tvb, 0, tot_len, "IEEE 802.11 Aggregate MPDU");
|
|
agg_tree = proto_item_add_subtree(ti, ett_ampdu);
|
|
}
|
|
|
|
for (ft_fdh = fd_head->next; ft_fdh; ft_fdh = ft_fdh->next) {
|
|
if (ft_fdh->tvb_data && ft_fdh->len) {
|
|
mpdu_count++;
|
|
mpdu_str = wmem_strdup_printf(pinfo->pool, "MPDU #%d", mpdu_count);
|
|
|
|
next_tvb = tvb_new_chain(tvb, ft_fdh->tvb_data);
|
|
add_new_data_source(pinfo, next_tvb, mpdu_str);
|
|
|
|
ampdu_tree = proto_tree_add_subtree(agg_tree, next_tvb, 0, -1, ett_ampdu_segment, NULL, mpdu_str);
|
|
call_dissector_with_data(ieee80211_radio_handle, next_tvb, pinfo, ampdu_tree, &phdr);
|
|
}
|
|
}
|
|
proto_tree_add_uint(seg_tree, hf_ampdu_count, tvb, 0, 0, mpdu_count);
|
|
pinfo->fragmented=FALSE;
|
|
} else {
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IEEE 802.11n");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "Unreassembled A-MPDU data");
|
|
call_data_dissector(next_tvb, pinfo, tree);
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
next_tvb = tvb_new_subset_remaining(tvb, offset);
|
|
/*
|
|
* Handle LINKTYPE_IEEE802_11, which is 105, specially; call the
|
|
* "802.11 with radio information" dissector, and pass it a pointer
|
|
* to the struct ieee_802_11_phdr we've constructed from the PPI data,
|
|
* so that it can display that information.
|
|
*
|
|
* Handle everything else with the pcap_pktdata dissector, letting
|
|
* it do whatever needs to be done about pseudo-headers.
|
|
*/
|
|
if (dlt == 105) {
|
|
/* LINKTYPE_IEEE802_11 */
|
|
call_dissector_with_data(ieee80211_radio_handle, next_tvb, pinfo, tree, &phdr);
|
|
} else {
|
|
/* Everything else. */
|
|
call_dissector_with_data(pcap_pktdata_handle, next_tvb, pinfo, tree, &dlt);
|
|
}
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/* Establish our beachead */
|
|
|
|
void
|
|
proto_register_ppi(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_ppi_head_version,
|
|
{ "Version", "ppi.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"PPI header format version", HFILL } },
|
|
{ &hf_ppi_head_flags,
|
|
{ "Flags", "ppi.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"PPI header flags", HFILL } },
|
|
{ &hf_ppi_head_flag_alignment,
|
|
{ "Alignment", "ppi.flags.alignment",
|
|
FT_BOOLEAN, 8, TFS(&tfs_ppi_head_flag_alignment), 0x01,
|
|
"PPI header flags - 32bit Alignment", HFILL } },
|
|
{ &hf_ppi_head_flag_reserved,
|
|
{ "Reserved", "ppi.flags.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, 0xFE,
|
|
"PPI header flags - Reserved Flags", HFILL } },
|
|
{ &hf_ppi_head_len,
|
|
{ "Header length", "ppi.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Length of header including payload", HFILL } },
|
|
{ &hf_ppi_head_dlt,
|
|
{ "DLT", "ppi.dlt",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "libpcap Data Link Type (DLT) of the payload", HFILL } },
|
|
|
|
{ &hf_ppi_field_type,
|
|
{ "Field type", "ppi.field_type",
|
|
FT_UINT16, BASE_DEC, VALS(vs_ppi_field_type), 0x0, "PPI data field type", HFILL } },
|
|
{ &hf_ppi_field_len,
|
|
{ "Field length", "ppi.field_len",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "PPI data field length", HFILL } },
|
|
|
|
{ &hf_80211_common_tsft,
|
|
{ "TSFT", "ppi.80211-common.tsft",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0, "PPI 802.11-Common Timing Synchronization Function Timer (TSFT)", HFILL } },
|
|
{ &hf_80211_common_flags,
|
|
{ "Flags", "ppi.80211-common.flags",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "PPI 802.11-Common Flags", HFILL } },
|
|
{ &hf_80211_common_flags_fcs,
|
|
{ "FCS present flag", "ppi.80211-common.flags.fcs",
|
|
FT_BOOLEAN, 16, TFS(&tfs_present_absent), DOT11_FLAG_HAVE_FCS, "PPI 802.11-Common Frame Check Sequence (FCS) Present Flag", HFILL } },
|
|
{ &hf_80211_common_flags_tsft,
|
|
{ "TSFT flag", "ppi.80211-common.flags.tsft",
|
|
FT_BOOLEAN, 16, TFS(&tfs_tsft_ms), DOT11_FLAG_TSF_TIMER_MS, "PPI 802.11-Common Timing Synchronization Function Timer (TSFT) msec/usec flag", HFILL } },
|
|
{ &hf_80211_common_flags_fcs_valid,
|
|
{ "FCS validity", "ppi.80211-common.flags.fcs-invalid",
|
|
FT_BOOLEAN, 16, TFS(&tfs_invalid_valid), DOT11_FLAG_FCS_INVALID, "PPI 802.11-Common Frame Check Sequence (FCS) Validity flag", HFILL } },
|
|
{ &hf_80211_common_flags_phy_err,
|
|
{ "PHY error flag", "ppi.80211-common.flags.phy-err",
|
|
FT_BOOLEAN, 16, TFS(&tfs_phy_error), DOT11_FLAG_PHY_ERROR, "PPI 802.11-Common Physical level (PHY) Error", HFILL } },
|
|
{ &hf_80211_common_rate,
|
|
{ "Data rate", "ppi.80211-common.rate",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "PPI 802.11-Common Data Rate (x 500 Kbps)", HFILL } },
|
|
{ &hf_80211_common_chan_freq,
|
|
{ "Channel frequency", "ppi.80211-common.chan.freq",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"PPI 802.11-Common Channel Frequency", HFILL } },
|
|
{ &hf_80211_common_chan_flags,
|
|
{ "Channel flags", "ppi.80211-common.chan.flags",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "PPI 802.11-Common Channel Flags", HFILL } },
|
|
|
|
{ &hf_80211_common_chan_flags_turbo,
|
|
{ "Turbo", "ppi.80211-common.chan.flags.turbo",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_TURBO, "PPI 802.11-Common Channel Flags Turbo", HFILL } },
|
|
{ &hf_80211_common_chan_flags_cck,
|
|
{ "Complementary Code Keying (CCK)", "ppi.80211-common.chan.flags.cck",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_CCK, "PPI 802.11-Common Channel Flags Complementary Code Keying (CCK) Modulation", HFILL } },
|
|
{ &hf_80211_common_chan_flags_ofdm,
|
|
{ "Orthogonal Frequency-Division Multiplexing (OFDM)", "ppi.80211-common.chan.flags.ofdm",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_OFDM, "PPI 802.11-Common Channel Flags Orthogonal Frequency-Division Multiplexing (OFDM)", HFILL } },
|
|
{ &hf_80211_common_chan_flags_2ghz,
|
|
{ "2 GHz spectrum", "ppi.80211-common.chan.flags.2ghz",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_2GHZ, "PPI 802.11-Common Channel Flags 2 GHz spectrum", HFILL } },
|
|
{ &hf_80211_common_chan_flags_5ghz,
|
|
{ "5 GHz spectrum", "ppi.80211-common.chan.flags.5ghz",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_5GHZ, "PPI 802.11-Common Channel Flags 5 GHz spectrum", HFILL } },
|
|
{ &hf_80211_common_chan_flags_passive,
|
|
{ "Passive", "ppi.80211-common.chan.flags.passive",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_PASSIVE, "PPI 802.11-Common Channel Flags Passive", HFILL } },
|
|
{ &hf_80211_common_chan_flags_dynamic,
|
|
{ "Dynamic CCK-OFDM", "ppi.80211-common.chan.flags.dynamic",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_DYN, "PPI 802.11-Common Channel Flags Dynamic CCK-OFDM Channel", HFILL } },
|
|
{ &hf_80211_common_chan_flags_gfsk,
|
|
{ "Gaussian Frequency Shift Keying (GFSK)", "ppi.80211-common.chan.flags.gfsk",
|
|
FT_BOOLEAN, 16, NULL, IEEE80211_CHAN_GFSK, "PPI 802.11-Common Channel Flags Gaussian Frequency Shift Keying (GFSK) Modulation", HFILL } },
|
|
|
|
{ &hf_80211_common_fhss_hopset,
|
|
{ "FHSS hopset", "ppi.80211-common.fhss.hopset",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "PPI 802.11-Common Frequency-Hopping Spread Spectrum (FHSS) Hopset", HFILL } },
|
|
{ &hf_80211_common_fhss_pattern,
|
|
{ "FHSS pattern", "ppi.80211-common.fhss.pattern",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, "PPI 802.11-Common Frequency-Hopping Spread Spectrum (FHSS) Pattern", HFILL } },
|
|
{ &hf_80211_common_dbm_antsignal,
|
|
{ "dBm antenna signal", "ppi.80211-common.dbm.antsignal",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11-Common dBm Antenna Signal", HFILL } },
|
|
{ &hf_80211_common_dbm_antnoise,
|
|
{ "dBm antenna noise", "ppi.80211-common.dbm.antnoise",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11-Common dBm Antenna Noise", HFILL } },
|
|
|
|
/* 802.11n MAC */
|
|
{ &hf_80211n_mac_flags,
|
|
{ "MAC flags", "ppi.80211n-mac.flags",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "PPI 802.11n MAC flags", HFILL } },
|
|
{ &hf_80211n_mac_flags_greenfield,
|
|
{ "Greenfield flag", "ppi.80211n-mac.flags.greenfield",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_GREENFIELD, "PPI 802.11n MAC Greenfield Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_ht20_40,
|
|
{ "HT20/HT40 flag", "ppi.80211n-mac.flags.ht20_40",
|
|
FT_BOOLEAN, 32, TFS(&tfs_ht20_40), DOT11N_FLAG_HT40, "PPI 802.11n MAC HT20/HT40 Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_rx_guard_interval,
|
|
{ "RX Short Guard Interval (SGI) flag", "ppi.80211n-mac.flags.rx.short_guard_interval",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_SHORT_GI, "PPI 802.11n MAC RX Short Guard Interval (SGI) Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_duplicate_rx,
|
|
{ "Duplicate RX flag", "ppi.80211n-mac.flags.rx.duplicate",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_DUPLICATE_RX, "PPI 802.11n MAC Duplicate RX Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_aggregate,
|
|
{ "Aggregate flag", "ppi.80211n-mac.flags.agg",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_IS_AGGREGATE, "PPI 802.11 MAC Aggregate Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_more_aggregates,
|
|
{ "More aggregates flag", "ppi.80211n-mac.flags.more_agg",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_MORE_AGGREGATES, "PPI 802.11n MAC More Aggregates Flag", HFILL } },
|
|
{ &hf_80211n_mac_flags_delimiter_crc_after,
|
|
{ "A-MPDU Delimiter CRC error after this frame flag", "ppi.80211n-mac.flags.delim_crc_error_after",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), DOT11N_FLAG_AGG_CRC_ERROR, "PPI 802.11n MAC A-MPDU Delimiter CRC Error After This Frame Flag", HFILL } },
|
|
{ &hf_80211n_mac_ampdu_id,
|
|
{ "AMPDU-ID", "ppi.80211n-mac.ampdu_id",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "PPI 802.11n MAC AMPDU-ID", HFILL } },
|
|
{ &hf_80211n_mac_num_delimiters,
|
|
{ "Num-Delimiters", "ppi.80211n-mac.num_delimiters",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC number of zero-length pad delimiters", HFILL } },
|
|
{ &hf_80211n_mac_reserved,
|
|
{ "Reserved", "ppi.80211n-mac.reserved",
|
|
FT_UINT24, BASE_HEX, NULL, 0x0, "PPI 802.11n MAC Reserved", HFILL } },
|
|
|
|
|
|
/* 802.11n MAC+PHY */
|
|
{ &hf_80211n_mac_phy_mcs,
|
|
{ "MCS", "ppi.80211n-mac-phy.mcs",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Modulation Coding Scheme (MCS)", HFILL } },
|
|
{ &hf_80211n_mac_phy_num_streams,
|
|
{ "Number of spatial streams", "ppi.80211n-mac-phy.num_streams",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY number of spatial streams", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_combined,
|
|
{ "RSSI combined", "ppi.80211n-mac-phy.rssi.combined",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Received Signal Strength Indication (RSSI) Combined", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant0_ctl,
|
|
{ "Antenna 0 control RSSI", "ppi.80211n-mac-phy.rssi.ant0ctl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 0 Control Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant1_ctl,
|
|
{ "Antenna 1 control RSSI", "ppi.80211n-mac-phy.rssi.ant1ctl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 1 Control Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant2_ctl,
|
|
{ "Antenna 2 control RSSI", "ppi.80211n-mac-phy.rssi.ant2ctl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 2 Control Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant3_ctl,
|
|
{ "Antenna 3 control RSSI", "ppi.80211n-mac-phy.rssi.ant3ctl",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 3 Control Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant0_ext,
|
|
{ "Antenna 0 extension RSSI", "ppi.80211n-mac-phy.rssi.ant0ext",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 0 Extension Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant1_ext,
|
|
{ "Antenna 1 extension RSSI", "ppi.80211n-mac-phy.rssi.ant1ext",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 1 Extension Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant2_ext,
|
|
{ "Antenna 2 extension RSSI", "ppi.80211n-mac-phy.rssi.ant2ext",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 2 Extension Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_rssi_ant3_ext,
|
|
{ "Antenna 3 extension RSSI", "ppi.80211n-mac-phy.rssi.ant3ext",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Antenna 3 Extension Channel Received Signal Strength Indication (RSSI)", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_freq,
|
|
{ "Extended channel frequency", "ppi.80211-mac-phy.ext-chan.freq",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Extended Channel Frequency", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags,
|
|
{ "Channel flags", "ppi.80211-mac-phy.ext-chan.flags",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, "PPI 802.11n MAC+PHY Channel Flags", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_turbo,
|
|
{ "Turbo", "ppi.80211-mac-phy.ext-chan.flags.turbo",
|
|
FT_BOOLEAN, 16, NULL, 0x0010, "PPI 802.11n MAC+PHY Channel Flags Turbo", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_cck,
|
|
{ "Complementary Code Keying (CCK)", "ppi.80211-mac-phy.ext-chan.flags.cck",
|
|
FT_BOOLEAN, 16, NULL, 0x0020, "PPI 802.11n MAC+PHY Channel Flags Complementary Code Keying (CCK) Modulation", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_ofdm,
|
|
{ "Orthogonal Frequency-Division Multiplexing (OFDM)", "ppi.80211-mac-phy.ext-chan.flags.ofdm",
|
|
FT_BOOLEAN, 16, NULL, 0x0040, "PPI 802.11n MAC+PHY Channel Flags Orthogonal Frequency-Division Multiplexing (OFDM)", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_2ghz,
|
|
{ "2 GHz spectrum", "ppi.80211-mac-phy.ext-chan.flags.2ghz",
|
|
FT_BOOLEAN, 16, NULL, 0x0080, "PPI 802.11n MAC+PHY Channel Flags 2 GHz spectrum", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_5ghz,
|
|
{ "5 GHz spectrum", "ppi.80211-mac-phy.ext-chan.flags.5ghz",
|
|
FT_BOOLEAN, 16, NULL, 0x0100, "PPI 802.11n MAC+PHY Channel Flags 5 GHz spectrum", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_passive,
|
|
{ "Passive", "ppi.80211-mac-phy.ext-chan.flags.passive",
|
|
FT_BOOLEAN, 16, NULL, 0x0200, "PPI 802.11n MAC+PHY Channel Flags Passive", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_dynamic,
|
|
{ "Dynamic CCK-OFDM", "ppi.80211-mac-phy.ext-chan.flags.dynamic",
|
|
FT_BOOLEAN, 16, NULL, 0x0400, "PPI 802.11n MAC+PHY Channel Flags Dynamic CCK-OFDM Channel", HFILL } },
|
|
{ &hf_80211n_mac_phy_ext_chan_flags_gfsk,
|
|
{ "Gaussian Frequency Shift Keying (GFSK)", "ppi.80211-mac-phy.ext-chan.flags.gfsk",
|
|
FT_BOOLEAN, 16, NULL, 0x0800, "PPI 802.11n MAC+PHY Channel Flags Gaussian Frequency Shift Keying (GFSK) Modulation", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant0signal,
|
|
{ "dBm antenna 0 signal", "ppi.80211n-mac-phy.dbmant0.signal",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 0 Signal", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant0noise,
|
|
{ "dBm antenna 0 noise", "ppi.80211n-mac-phy.dbmant0.noise",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 0 Noise", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant1signal,
|
|
{ "dBm antenna 1 signal", "ppi.80211n-mac-phy.dbmant1.signal",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 1 Signal", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant1noise,
|
|
{ "dBm antenna 1 noise", "ppi.80211n-mac-phy.dbmant1.noise",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 1 Noise", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant2signal,
|
|
{ "dBm antenna 2 signal", "ppi.80211n-mac-phy.dbmant2.signal",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 2 Signal", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant2noise,
|
|
{ "dBm antenna 2 noise", "ppi.80211n-mac-phy.dbmant2.noise",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 2 Noise", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant3signal,
|
|
{ "dBm antenna 3 signal", "ppi.80211n-mac-phy.dbmant3.signal",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 3 Signal", HFILL } },
|
|
{ &hf_80211n_mac_phy_dbm_ant3noise,
|
|
{ "dBm antenna 3 noise", "ppi.80211n-mac-phy.dbmant3.noise",
|
|
FT_INT8, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY dBm Antenna 3 Noise", HFILL } },
|
|
{ &hf_80211n_mac_phy_evm0,
|
|
{ "EVM-0", "ppi.80211n-mac-phy.evm0",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Error Vector Magnitude (EVM) for chain 0", HFILL } },
|
|
{ &hf_80211n_mac_phy_evm1,
|
|
{ "EVM-1", "ppi.80211n-mac-phy.evm1",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Error Vector Magnitude (EVM) for chain 1", HFILL } },
|
|
{ &hf_80211n_mac_phy_evm2,
|
|
{ "EVM-2", "ppi.80211n-mac-phy.evm2",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Error Vector Magnitude (EVM) for chain 2", HFILL } },
|
|
{ &hf_80211n_mac_phy_evm3,
|
|
{ "EVM-3", "ppi.80211n-mac-phy.evm3",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "PPI 802.11n MAC+PHY Error Vector Magnitude (EVM) for chain 3", HFILL } },
|
|
|
|
{ &hf_ampdu_segment,
|
|
{ "A-MPDU", "ppi.80211n-mac.ampdu",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0, "802.11n Aggregated MAC Protocol Data Unit (A-MPDU)", HFILL }},
|
|
#if 0
|
|
{ &hf_ampdu_segments,
|
|
{ "Reassembled A-MPDU", "ppi.80211n-mac.ampdu.reassembled",
|
|
FT_NONE, BASE_NONE, NULL, 0x0, "Reassembled Aggregated MAC Protocol Data Unit (A-MPDU)", HFILL }},
|
|
#endif
|
|
{ &hf_ampdu_reassembled_in,
|
|
{ "Reassembled A-MPDU in frame", "ppi.80211n-mac.ampdu.reassembled_in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
"The A-MPDU that doesn't end in this segment is reassembled in this frame",
|
|
HFILL }},
|
|
{ &hf_ampdu_count,
|
|
{ "MPDU count", "ppi.80211n-mac.ampdu.count",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, "The number of aggregated MAC Protocol Data Units (MPDUs)", HFILL }},
|
|
|
|
{ &hf_spectrum_map,
|
|
{ "Radio spectrum map", "ppi.spectrum-map",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "PPI Radio spectrum map", HFILL } },
|
|
{ &hf_process_info,
|
|
{ "Process information", "ppi.proc-info",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "PPI Process information", HFILL } },
|
|
{ &hf_capture_info,
|
|
{ "Capture information", "ppi.cap-info",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0, "PPI Capture information", HFILL } },
|
|
|
|
/* Aggregtion Extension */
|
|
{ &hf_aggregation_extension_interface_id,
|
|
{ "Interface ID", "ppi.aggregation_extension.interface_id",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0, "Zero-based index of the physical interface the packet was captured from", HFILL } },
|
|
|
|
/* 802.3 Extension */
|
|
{ &hf_8023_extension_flags,
|
|
{ "Flags", "ppi.8023_extension.flags",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "PPI 802.3 Extension Flags", HFILL } },
|
|
{ &hf_8023_extension_flags_fcs_present,
|
|
{ "FCS Present Flag", "ppi.8023_extension.flags.fcs_present",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00000001, "FCS (4 bytes) is present at the end of the packet", HFILL } },
|
|
{ &hf_8023_extension_errors,
|
|
{ "Errors", "ppi.8023_extension.errors",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, "PPI 802.3 Extension Errors", HFILL } },
|
|
{ &hf_8023_extension_errors_fcs,
|
|
{ "FCS Error", "ppi.8023_extension.errors.fcs",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00000001,
|
|
"PPI 802.3 Extension FCS Error", HFILL } },
|
|
{ &hf_8023_extension_errors_sequence,
|
|
{ "Sequence Error", "ppi.8023_extension.errors.sequence",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00000002,
|
|
"PPI 802.3 Extension Sequence Error", HFILL } },
|
|
{ &hf_8023_extension_errors_symbol,
|
|
{ "Symbol Error", "ppi.8023_extension.errors.symbol",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00000004,
|
|
"PPI 802.3 Extension Symbol Error", HFILL } },
|
|
{ &hf_8023_extension_errors_data,
|
|
{ "Data Error", "ppi.8023_extension.errors.data",
|
|
FT_BOOLEAN, 32, TFS(&tfs_true_false), 0x00000008,
|
|
"PPI 802.3 Extension Data Error", HFILL } },
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_ppi_gps, { "GPS", "ppi.gps", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_ppi_vector, { "VECTOR", "ppi.vector", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_ppi_harris, { "HARRIS", "ppi.harris", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_ppi_antenna, { "ANTENNA", "ppi.antenna", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_ppi_fnet, { "FNET", "ppi.fnet", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_ppi_reserved, { "Reserved", "ppi.reserved", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_ppi_pph,
|
|
&ett_ppi_flags,
|
|
&ett_dot11_common,
|
|
&ett_dot11_common_flags,
|
|
&ett_dot11_common_channel_flags,
|
|
&ett_dot11n_mac,
|
|
&ett_dot11n_mac_flags,
|
|
&ett_dot11n_mac_phy,
|
|
&ett_dot11n_mac_phy_ext_channel_flags,
|
|
&ett_ampdu_segments,
|
|
&ett_ampdu,
|
|
&ett_ampdu_segment,
|
|
&ett_aggregation_extension,
|
|
&ett_8023_extension,
|
|
&ett_8023_extension_flags,
|
|
&ett_8023_extension_errors
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_ppi_invalid_length, { "ppi.invalid_length", PI_MALFORMED, PI_ERROR, "Invalid length", EXPFILL }},
|
|
};
|
|
|
|
module_t *ppi_module;
|
|
expert_module_t* expert_ppi;
|
|
|
|
proto_ppi = proto_register_protocol("PPI Packet Header", "PPI", "ppi");
|
|
proto_register_field_array(proto_ppi, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_ppi = expert_register_protocol(proto_ppi);
|
|
expert_register_field_array(expert_ppi, ei, array_length(ei));
|
|
|
|
ppi_handle = register_dissector("ppi", dissect_ppi, proto_ppi);
|
|
register_capture_dissector_table("ppi", "PPI");
|
|
|
|
reassembly_table_register(&du_reassembly_table,
|
|
&addresses_reassembly_table_functions);
|
|
|
|
/* Configuration options */
|
|
ppi_module = prefs_register_protocol(proto_ppi, NULL);
|
|
prefs_register_bool_preference(ppi_module, "reassemble",
|
|
"Reassemble fragmented 802.11 A-MPDUs",
|
|
"Whether fragmented 802.11 aggregated MPDUs should be reassembled",
|
|
&ppi_ampdu_reassemble);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ppi(void)
|
|
{
|
|
capture_dissector_handle_t ppi_cap_handle;
|
|
|
|
ieee80211_radio_handle = find_dissector_add_dependency("wlan_radio", proto_ppi);
|
|
pcap_pktdata_handle = find_dissector_add_dependency("pcap_pktdata", proto_ppi);
|
|
ppi_gps_handle = find_dissector_add_dependency("ppi_gps", proto_ppi);
|
|
ppi_vector_handle = find_dissector_add_dependency("ppi_vector", proto_ppi);
|
|
ppi_sensor_handle = find_dissector_add_dependency("ppi_sensor", proto_ppi);
|
|
ppi_antenna_handle = find_dissector_add_dependency("ppi_antenna", proto_ppi);
|
|
ppi_fnet_handle = find_dissector_add_dependency("ppi_fnet", proto_ppi);
|
|
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_PPI, ppi_handle);
|
|
ppi_cap_handle = create_capture_dissector_handle(capture_ppi, proto_ppi);
|
|
capture_dissector_add_uint("wtap_encap", WTAP_ENCAP_PPI, ppi_cap_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|