diff options
Diffstat (limited to 'epan/dissectors/packet-ixveriwave.c')
| -rw-r--r-- | epan/dissectors/packet-ixveriwave.c | 1544 |
1 files changed, 1544 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ixveriwave.c b/epan/dissectors/packet-ixveriwave.c new file mode 100644 index 0000000000..569c53e72b --- /dev/null +++ b/epan/dissectors/packet-ixveriwave.c @@ -0,0 +1,1544 @@ +/* packet-ixveriwave-common.c + * Routines for calling the right protocol for the ethertype. + * + * $Id$ + * + * Tom Cook <tcook@ixiacom.com> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <glib.h> +#include <string.h> +#include <epan/packet.h> +#include <epan/crc32-tvb.h> + +#include "packet-eth.h" + +static void dissect_ixveriwave(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); +static void ethernettap_dissect(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *tap_tree); +static void wlantap_dissect(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *tap_tree); + +typedef struct { + guint32 previous_frame_num; + guint64 previous_end_time; +} frame_end_data; + +typedef struct ifg_info { + guint32 ifg; + guint64 previous_end_time; + guint64 current_start_time; +} ifg_info; + +static frame_end_data previous_frame_data = {0,0}; + +/* static int ieee80211_mhz2ieee(int freq, int flags); */ + +#define COMMON_LENGTH_OFFSET 2 +#define ETHERNETTAP_VWF_TXF 0x01 /* frame was transmitted flag */ +#define ETHERNETTAP_VWF_FCSERR 0x02 /* frame has FCS error */ + +#define VW_RADIOTAPF_TXF 0x01 /* frame was transmitted */ +#define VW_RADIOTAPF_FCSERR 0x02 /* FCS error detected */ +#define VW_RADIOTAPF_RETRERR 0x04 /* excess retry error detected */ +#define VW_RADIOTAPF_DCRERR 0x10 /* decrypt error detected */ +#define VW_RADIOTAPF_ENCMSK 0x60 /* encryption type mask */ + /* 0 = none, 1 = WEP, 2 = TKIP, 3 = CCKM */ +#define VW_RADIOTAPF_ENCSHIFT 5 /* shift amount to right-align above field */ +#define VW_RADIOTAPF_IS_WEP 0x20 /* encryption type value = WEP */ +#define VW_RADIOTAPF_IS_TKIP 0x40 /* encryption type value = TKIP */ +#define VW_RADIOTAPF_IS_CCMP 0x60 /* encryption type value = CCMP */ +#define VW_RADIOTAPF_SEQ_ERR 0x80 /* flow sequence error detected */ + +#define VW_RADIOTAP_FPGA_VER_vVW510021 0x000C /* vVW510021 version detected */ +#define VW_RADIOTAP_FPGA_VER_vVW510021_11n 0x000D + +#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_RADIOTAP_F_FCS 0x0010 /* frame includes FCS */ +#define IEEE80211_RADIOTAP_F_DATAPAD 0x0020 /* frame has padding between + * 802.11 header and payload + * (to 32-bit boundary) + */ +#define IEEE80211_RADIOTAP_F_HT 0x0040 /* HT mode */ +#define IEEE80211_RADIOTAP_F_CFP 0x0001 /* sent/received + * during CFP + */ +#define IEEE80211_RADIOTAP_F_SHORTPRE 0x0002 /* sent/received + * with short + * preamble + */ +#define IEEE80211_RADIOTAP_F_WEP 0x0004 /* sent/received + * with WEP encryption + */ +#define IEEE80211_RADIOTAP_F_FRAG 0x0008 /* sent/received + * with fragmentation + */ +#define IEEE80211_PLCP_RATE_MASK 0x7f /* parses out the rate or MCS index from the PLCP header(s) */ +#define IEEE80211_RADIOTAP_F_40MHZ 0x0080 /* 40 Mhz channel bandwidth */ +#define IEEE80211_RADIOTAP_F_SHORTGI 0x0100 + +#define ETHERNET_PORT 1 +#define WLAN_PORT 0 + +static int proto_ixveriwave = -1; +static dissector_handle_t ethernet_handle; + +/* static int hf_ixveriwave_version = -1; */ +static int hf_ixveriwave_frame_length = -1; + +/* static int hf_ixveriwave_fcs = -1; */ + +static int hf_ixveriwave_vw_vcid = -1; +static int hf_ixveriwave_vw_msdu_length = -1; +static int hf_ixveriwave_vw_seqnum = -1; +static int hf_ixveriwave_vw_flowid = -1; + +static int hf_ixveriwave_vw_mslatency = -1; +static int hf_ixveriwave_vw_latency = -1; +static int hf_ixveriwave_vw_pktdur = -1; +static int hf_ixveriwave_vw_ifg = -1; +static int hf_ixveriwave = -1; +static int hf_ixveriwave_vw_startt = -1; +static int hf_ixveriwave_vw_endt = -1; + +static gint ett_commontap = -1; +static gint ett_commontap_times = -1; +static gint ett_ethernettap_info = -1; +static gint ett_ethernettap_error = -1; +static gint ett_ethernettap_flags = -1; + +/* static gint ett_radiotap = -1; +static gint ett_radiotap_present = -1; +*/ +static gint ett_radiotap_flags = -1; +/* static gint ett_radiotap_channel_flags = -1; */ + +static dissector_handle_t ieee80211_handle; +static dissector_handle_t ieee80211_datapad_handle; + +/* Ethernet fields */ +static int hf_ixveriwave_vw_info = -1; +static int hf_ixveriwave_vw_error = -1; + +static int hf_ixveriwave_vwf_txf = -1; +static int hf_ixveriwave_vwf_fcserr = -1; + +static int hf_ixveriwave_vw_l4id = -1; + +/*veriwave note: i know the below method seems clunky, but +they didn't have a item_format at the time to dynamically add the appropriate decode text*/ +static int hf_ixveriwave_vw_info_retryCount = -1; +static int hf_ixveriwave_vw_info_tx_bit15 = -1; + +static int hf_ixveriwave_vw_info_rx_1_bit8 = -1; +static int hf_ixveriwave_vw_info_rx_1_bit9 = -1; + +/*error flags*/ +static int hf_ixveriwave_vw_error_tx_bit1 = -1; +static int hf_ixveriwave_vw_error_tx_bit5 = -1; +static int hf_ixveriwave_vw_error_tx_bit9 = -1; +static int hf_ixveriwave_vw_error_tx_bit10 = -1; +static int hf_ixveriwave_vw_error_tx_bit11 = -1; + +static int hf_ixveriwave_vw_error_rx_1_bit0 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit1 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit2 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit3 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit4 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit5 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit6 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit7 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit8 = -1; +static int hf_ixveriwave_vw_error_rx_1_bit9 = -1; + +static int hf_radiotap_flags = -1; +static int hf_radiotap_datarate = -1; +static int hf_radiotap_dbm_antsignal = -1; +static int hf_radiotap_txpower = -1; +static int hf_radiotap_fcs_bad = -1; + +static int hf_radiotap_flags_cfp = -1; +static int hf_radiotap_flags_preamble = -1; +static int hf_radiotap_flags_wep = -1; +static int hf_radiotap_flags_frag = -1; +static int hf_radiotap_flags_fcs = -1; +static int hf_radiotap_flags_datapad = -1; +static int hf_radiotap_flags_ht = -1; +static int hf_radiotap_flags_40mhz = -1; +static int hf_radiotap_flags_shortgi = -1; + +/* start VeriWave specific 6-2007*/ +static int hf_radiotap_vw_errors = -1; +static int hf_radiotap_vw_info = -1; +static int hf_radiotap_vw_ht_length = -1; + +static int hf_radiotap_vw_info_tx_bit10 = -1; +static int hf_radiotap_vw_info_tx_bit11 = -1; +static int hf_radiotap_vw_info_tx_bit12 = -1; +static int hf_radiotap_vw_info_tx_bit13 = -1; +static int hf_radiotap_vw_info_tx_bit14 = -1; +static int hf_radiotap_vw_info_tx_bit15 = -1; + +static int hf_radiotap_vw_info_rx_2_bit8 = -1; +static int hf_radiotap_vw_info_rx_2_bit9 = -1; +static int hf_radiotap_vw_info_rx_2_bit10 = -1; +static int hf_radiotap_vw_info_rx_2_bit11 = -1; +static int hf_radiotap_vw_info_rx_2_bit12 = -1; +static int hf_radiotap_vw_info_rx_2_bit13 = -1; +static int hf_radiotap_vw_info_rx_2_bit14 = -1; +static int hf_radiotap_vw_info_rx_2_bit15 = -1; + +static int hf_radiotap_vw_errors_rx_1_bit0 = -1; +static int hf_radiotap_vw_errors_rx_1_bit1 = -1; +static int hf_radiotap_vw_errors_rx_1_bit2 = -1; +static int hf_radiotap_vw_errors_rx_1_bit3 = -1; +static int hf_radiotap_vw_errors_rx_1_bit4 = -1; +static int hf_radiotap_vw_errors_rx_1_bit5 = -1; +static int hf_radiotap_vw_errors_rx_1_bit6 = -1; +static int hf_radiotap_vw_errors_rx_1_bit7 = -1; +static int hf_radiotap_vw_errors_rx_1_bit8 = -1; +static int hf_radiotap_vw_errors_rx_1_bit9 = -1; +static int hf_radiotap_vw_errors_rx_1_bit10 = -1; +static int hf_radiotap_vw_errors_rx_1_bit11 = -1; +static int hf_radiotap_vw_errors_rx_1_bit12 = -1; +static int hf_radiotap_vw_errors_rx_1_bit13 = -1; +static int hf_radiotap_vw_errors_rx_1_bit14 = -1; +static int hf_radiotap_vw_errors_rx_1_bit15 = -1; + +static int hf_radiotap_vw_errors_rx_2_bit0 = -1; +static int hf_radiotap_vw_errors_rx_2_bit1 = -1; +static int hf_radiotap_vw_errors_rx_2_bit2 = -1; +static int hf_radiotap_vw_errors_rx_2_bit4 = -1; +static int hf_radiotap_vw_errors_rx_2_bit5 = -1; +static int hf_radiotap_vw_errors_rx_2_bit6 = -1; +static int hf_radiotap_vw_errors_rx_2_bit7 = -1; +static int hf_radiotap_vw_errors_rx_2_bit8 = -1; +static int hf_radiotap_vw_errors_rx_2_bit10 = -1; +static int hf_radiotap_vw_errors_rx_2_bit11 = -1; + +static int hf_radiotap_vw_errors_tx_bit1 = -1; +static int hf_radiotap_vw_errors_tx_bit5 = -1; + +static int hf_radiotap_vwf_txf = -1; +static int hf_radiotap_vwf_fcserr = -1; +static int hf_radiotap_vwf_dcrerr = -1; +static int hf_radiotap_vwf_retrerr = -1; +static int hf_radiotap_vwf_enctype = -1; + +static gint ett_radiotap_info = -1; +static gint ett_radiotap_errors = -1; +static gint ett_radiotap_times = -1; + +#define ALIGN_OFFSET(offset, width) \ + ( (((offset) + ((width) - 1)) & (~((width) - 1))) - offset ) + +/* Conversion of MCS index, guard interval, channel bandwidth to HT rate */ +static int canonical_ndbps_20[] = {26, 52, 78, 104, 156, 208, 234, 260}; +static int canonical_ndbps_40[] = {54, 108, 162, 216, 324, 432, 486, 540}; +static float getHTrate( guint8 rate, guint8 rflags ); + +static void +dissect_ixveriwave(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *common_tree = NULL; + proto_item *ti = NULL; + proto_item *vw_times_ti = NULL; + proto_tree *vw_times_tree = NULL; + int align_offset, offset, time_tree_offset=0; + guint16 version, length; + guint length_remaining; + guint64 vw_startt=0, vw_endt=0; + gint32 vwf_txf, vwf_fcserr; + guint32 true_length; + guint32 vw_latency, vw_pktdur, vw_flowid; + guint16 vw_vcid, vw_msdu_length, vw_seqnum; + tvbuff_t *next_tvb; + ifg_info *p_ifg_info; + + vwf_fcserr = vwf_txf = 0; + align_offset = 0; + + offset = 0; + version = tvb_get_letohs(tvb, offset); + + length = tvb_get_letohs(tvb, offset + COMMON_LENGTH_OFFSET); + + col_add_fstr(pinfo->cinfo, COL_PROTOCOL, "%s", version ? "ETH" : "WLAN"); + col_clear(pinfo->cinfo, COL_INFO); + + true_length = pinfo->fd->pkt_len - length - tvb_get_letohs(tvb, offset + length) + 4; /* add FCS length into captured length */ + + col_add_fstr(pinfo->cinfo, COL_INFO, "%s Capture, Length %u", + version ? "IxVeriWave Ethernet Tap" : "IxVeriWave Radio Tap", length); + + /* Dissect the packet */ + if (tree) { + ti = proto_tree_add_protocol_format(tree, proto_ixveriwave, + tvb, 0, length, "%s Header, Length %u", version ? "IxVeriWave Ethernet Tap" : "IxVeriWave Radio Tap", length); + + common_tree = proto_item_add_subtree(ti, ett_commontap); + + proto_tree_add_uint(common_tree, hf_ixveriwave_frame_length, + tvb, 4, 2, true_length); + } + + length_remaining = length; + + offset+=4; + length_remaining-=4; + + /*extract msdu/octets , 2bytes*/ + align_offset = ALIGN_OFFSET(offset, 2); + offset += align_offset; + length_remaining -= align_offset; + + if (length_remaining >= 2) { + + vw_msdu_length = tvb_get_letohs(tvb, offset); + if (tree) { + proto_tree_add_uint(common_tree, hf_ixveriwave_vw_msdu_length, + tvb, offset, 2, vw_msdu_length); + } + + offset+=2; + length_remaining-=2; + } + + /*extract flow id , 4bytes*/ + if (length_remaining >= 4) { + align_offset = ALIGN_OFFSET(offset, 4); + offset += align_offset; + length_remaining -= align_offset; + + vw_flowid = tvb_get_letohl(tvb, offset); + if (tree) { + proto_tree_add_uint(common_tree, hf_ixveriwave_vw_flowid, + tvb, offset, 4, vw_flowid); + } + + offset+=4; + length_remaining-=4; + } + + /*extract client id, 2bytes*/ + if (length_remaining >= 2) { + align_offset = ALIGN_OFFSET(offset, 2); + offset += align_offset; + length_remaining -= align_offset; + + vw_vcid = tvb_get_letohs(tvb, offset); + if (tree) { + proto_tree_add_uint(common_tree, hf_ixveriwave_vw_vcid, + tvb, offset, 2, vw_vcid); + } + + offset+=2; + length_remaining-=2; + } + + /*extract sequence number , 2bytes*/ + if (length_remaining >= 2) { + + vw_seqnum = tvb_get_letohs(tvb, offset); + if (tree) { + proto_tree_add_uint(common_tree, hf_ixveriwave_vw_seqnum, + tvb, offset, 2, vw_seqnum); + } + + offset+=2; + length_remaining-=2; + } + + /*extract latency, 4 bytes*/ + if (length_remaining >= 4) { + align_offset = ALIGN_OFFSET(offset, 4); + offset += align_offset; + length_remaining -= align_offset; + vw_latency = tvb_get_letohl(tvb, offset); + + if (tree) { + /* start a tree going for the various packet times */ + if (vw_latency != 0) { + vw_times_ti = proto_tree_add_float_format(common_tree, + hf_ixveriwave_vw_mslatency, + tvb, offset, 4, (float)(vw_latency/1000000.0), + "Frame timestamp values: (latency %.3f msec)", + (float)(vw_latency/1000000.0)); + vw_times_tree = proto_item_add_subtree(vw_times_ti, ett_commontap_times); + + proto_tree_add_uint_format(vw_times_tree, hf_ixveriwave_vw_latency, + tvb, offset, 4, vw_latency, + "Frame latency: %u nsec", vw_latency); + } + else + { + vw_times_ti = proto_tree_add_float_format(common_tree, + hf_ixveriwave_vw_mslatency, + tvb, offset, 4, (float)(vw_latency/1000000.0), + "Frame timestamp values:"); + vw_times_tree = proto_item_add_subtree(vw_times_ti, ett_commontap_times); + + proto_tree_add_uint_format(vw_times_tree, hf_ixveriwave_vw_latency, + tvb, offset, 4, vw_latency, + "Frame latency: N/A"); + } + } + + offset+=4; + length_remaining-=4; + } + + + + /*extract signature timestamp, 4 bytes (32 LSBs only, nsec)*/ + if (length_remaining >= 4) { + align_offset = ALIGN_OFFSET(offset, 4); + offset += align_offset; + length_remaining -= align_offset; + + if (tree) { + if (vw_times_tree != NULL) { + /* TODO: what should this fieldname be? */ + proto_tree_add_item(vw_times_tree, hf_ixveriwave, + tvb, offset, 4, ENC_BIG_ENDIAN); + } + } + time_tree_offset = offset; + offset+=4; + length_remaining-=4; + } + + /*extract frame start timestamp, 8 bytes (nsec)*/ + if (length_remaining >= 8) { + align_offset = ALIGN_OFFSET(offset, 8); + offset += align_offset; + length_remaining -= align_offset; + vw_startt = tvb_get_letoh64(tvb, offset); + + if (tree) { + if (vw_times_tree != NULL) { + proto_tree_add_uint64_format(vw_times_tree, hf_ixveriwave_vw_startt, + tvb, offset, 8, vw_startt, + "Frame start timestamp: %" G_GINT64_MODIFIER "u usec", vw_startt); + } + } + + offset+=8; + length_remaining-=8; + } + + /*extract frame end timestamp, 8 bytes (nsec)*/ + if (length_remaining >= 8) { + align_offset = ALIGN_OFFSET(offset, 8); + offset += align_offset; + length_remaining -= align_offset; + vw_endt = tvb_get_letoh64(tvb, offset); + + if (tree) { + if (vw_times_tree != NULL) { + proto_tree_add_uint64_format(vw_times_tree, hf_ixveriwave_vw_endt, + tvb, offset, 8, vw_endt, + "Frame end timestamp: %" G_GINT64_MODIFIER "u usec", vw_endt); + } + } + + offset+=8; + length_remaining-=8; + } + /*extract frame duration , 4 bytes*/ + if (length_remaining >= 4) { + align_offset = ALIGN_OFFSET(offset, 4); + offset += align_offset; + length_remaining -= align_offset; + vw_pktdur = tvb_get_letohl(tvb, offset); + + if (tree) { + if (vw_times_tree != NULL) { + proto_item *duration_ti; + if (vw_endt >= vw_startt) { + duration_ti = proto_tree_add_uint_format(vw_times_tree, hf_ixveriwave_vw_pktdur, + tvb, offset-16, 16, vw_pktdur, + "Frame duration: %u nsec", vw_pktdur); + + /* Add to root summary */ + proto_item_append_text(vw_times_ti, " (Frame duration=%u nsecs)", vw_pktdur); + } + else { + duration_ti = proto_tree_add_uint_format(vw_times_tree, hf_ixveriwave_vw_pktdur, + tvb, offset, 0, vw_pktdur, + "Frame duration: N/A"); + + /* Add to root summary */ + proto_item_append_text(vw_times_ti, " (Frame duration=N/A)"); + } + + PROTO_ITEM_SET_GENERATED(duration_ti); + } + } + + offset+=4; + length_remaining-=4; + } + + if (vw_times_ti) { + proto_item_set_len(vw_times_ti, offset-time_tree_offset); + } + + /* Calculate the IFG */ + + /* Check for an existing ifg value associated with the frame */ + p_ifg_info = p_get_proto_data(pinfo->fd, proto_ixveriwave); + if (!p_ifg_info) + { + /* allocate the space */ + p_ifg_info = se_alloc0(sizeof(struct ifg_info)); + + /* Doesn't exist, so we need to calculate the value */ + if (previous_frame_data.previous_frame_num !=0 && (pinfo->fd->num - previous_frame_data.previous_frame_num == 1)) + { + p_ifg_info->ifg = (guint32)(vw_startt - previous_frame_data.previous_end_time); + p_ifg_info->previous_end_time = previous_frame_data.previous_end_time; + } + else + { + p_ifg_info->ifg = 0; + p_ifg_info->previous_end_time = 0; + } + + /* Store current data into the static structure */ + previous_frame_data.previous_end_time = vw_endt; + previous_frame_data.previous_frame_num = pinfo->fd->num; + + /* Record the current start time */ + p_ifg_info->current_start_time = vw_startt; + + /* Add the ifg onto the frame */ + p_add_proto_data(pinfo->fd, proto_ixveriwave, p_ifg_info); + } + + if (tree) { + ti = proto_tree_add_uint(common_tree, hf_ixveriwave_vw_ifg, + tvb, offset, 0, p_ifg_info->ifg); + PROTO_ITEM_SET_GENERATED(ti); + } + + /* Grab the rest of the frame. */ + next_tvb = tvb_new_subset(tvb, length, -1, -1); + + /* dissect the ethernet or wlan header next */ + if (version == ETHERNET_PORT) + ethernettap_dissect(next_tvb, pinfo, tree, common_tree); + else + wlantap_dissect(next_tvb, pinfo, tree, common_tree); +} + +/* + * Returns the amount required to align "offset" with "width" + */ +#define ALIGN_OFFSET(offset, width) \ + ( (((offset) + ((width) - 1)) & (~((width) - 1))) - offset ) + +static void +ethernettap_dissect(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *tap_tree) +{ + proto_tree *vweft, *vw_errorFlags_tree = NULL, *vwift,*vw_infoFlags_tree = NULL; + int align_offset, offset; + tvbuff_t *next_tvb; + guint length, length_remaining; + guint16 vw_flags, vw_info; + guint16 vw_l4id; + guint32 vw_error; + gint32 vwf_txf, vwf_fcserr; + + vwf_fcserr = vwf_txf = 0; + align_offset = 0; + + offset = 0; + + length = tvb_get_letohs(tvb, offset); + length_remaining = length; + + offset += 2; + length_remaining -= 2; + + /* extract flags (currently use only TX/RX and FCS error flag) */ + if (length >= 2) { + align_offset = ALIGN_OFFSET(offset, 2); + offset += align_offset; + length_remaining -= align_offset; + vw_flags = tvb_get_letohs(tvb, offset); + vwf_txf = ((vw_flags & ETHERNETTAP_VWF_TXF) == 0) ? 0 : 1; + vwf_fcserr = ((vw_flags & ETHERNETTAP_VWF_FCSERR) == 0) ? 0 : 1; + + if (tap_tree) { + proto_tree_add_uint(tap_tree, hf_ixveriwave_vwf_txf, + tvb, 0, 0, vwf_txf); + proto_tree_add_uint(tap_tree, hf_ixveriwave_vwf_fcserr, + tvb, 0, 0, vwf_fcserr); + } + + offset += 2; + length_remaining -= 2; + } + + /*extract info flags , 2bytes*/ + + if (length_remaining >= 2) { + vw_info = tvb_get_letohs(tvb, offset); + + if (tap_tree) { + vwift = proto_tree_add_uint(tap_tree, hf_ixveriwave_vw_info, + tvb, offset, 2, vw_info); + vw_infoFlags_tree = proto_item_add_subtree(vwift, ett_ethernettap_info); + + if (vwf_txf == 0) { + /* then it's an rx case */ + proto_tree_add_item(vw_infoFlags_tree, hf_ixveriwave_vw_info_rx_1_bit8, + tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, hf_ixveriwave_vw_info_rx_1_bit9, + tvb, offset, 2, ENC_LITTLE_ENDIAN); + } else { + /* it's a tx case */ + proto_tree_add_uint_format(vw_infoFlags_tree, hf_ixveriwave_vw_info_retryCount, + tvb, offset, 2, vw_info, + "Retry count: %u ", vw_info); + } + } /*end of if tree */ + + offset+=2; + length_remaining-=2; + } + + /*extract error , 4bytes*/ + if (length_remaining >= 4) { + vw_error = tvb_get_letohl(tvb, offset); + + if (tap_tree) { + vweft = proto_tree_add_uint(tap_tree, hf_ixveriwave_vw_error, + tvb, offset, 4, vw_error); + vw_errorFlags_tree = proto_item_add_subtree(vweft, ett_ethernettap_error); + + if (vwf_txf == 0) { + /* then it's an rx case */ + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit0, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit1, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit2, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit3, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit4, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit5, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit6, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit7, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit8, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_rx_1_bit9, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + } else { + /* it's a tx case */ + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_tx_bit1, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_tx_bit5, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_tx_bit9, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_tx_bit10, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, hf_ixveriwave_vw_error_tx_bit11, + tvb, offset, 4, ENC_LITTLE_ENDIAN); + } + } /*end of if (tree) */ + + offset+=4; + length_remaining-=4; + } + /*extract l4id , 4bytes*/ + if (length_remaining >= 4) { + vw_l4id = tvb_get_letohl(tvb, offset); + if (tap_tree) { + proto_tree_add_uint(tap_tree, hf_ixveriwave_vw_l4id, + tvb, offset, 4, vw_l4id); + } + offset+=4; + length_remaining-=4; + } + + /*extract pad, 4bytes*/ + if (length_remaining >= 4) { + tvb_get_letohl(tvb, offset); /* throw away pad */ + offset+=4; + length_remaining-=4; + } + + /* Grab the rest of the frame. */ + next_tvb = tvb_new_subset(tvb, length, -1, -1); + + /* dissect the ethernet header next */ + call_dissector(ethernet_handle, next_tvb, pinfo, tree); +} + +static void +wlantap_dissect(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *tap_tree) +{ + proto_tree *ft, *flags_tree = NULL; +/* proto_item *ti = NULL; */ + proto_item *hdr_fcs_ti = NULL; + int align_offset, offset; + guint32 calc_fcs; + tvbuff_t *next_tvb; + guint length, length_remaining; + guint32 rate; + gint8 dbm; + guint8 rflags=0; + + /* start veriwave addition 6-2007 */ + proto_tree *vweft, *vw_errorFlags_tree = NULL, *vwift,*vw_infoFlags_tree = NULL; + guint16 vw_flags, vw_info, vw_ht_length, vw_rflags; + guint32 vw_errors; + gint8 tx_power; + /* end veriwave additions 6-2007 */ + float ht_rate; + /* start veriwave additions 6-14-2007 */ + tx_power = 0; + /* end veriwave additions 6-14-2007 */ + + offset = 0; + length = tvb_get_letohs(tvb, offset); + length_remaining = length; + + align_offset = ALIGN_OFFSET(offset, 2); + offset += 2; + length_remaining -= 2; + + vw_rflags = tvb_get_letohs(tvb, offset); + if (tree) { + ft = proto_tree_add_uint(tap_tree, hf_radiotap_flags, + tvb, offset, 2, vw_rflags); + flags_tree = proto_item_add_subtree(ft, ett_radiotap_flags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_cfp, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_preamble, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_wep, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_frag, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_fcs, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_datapad, + tvb, offset, 2, vw_rflags); + if ( vw_rflags & IEEE80211_RADIOTAP_F_HT ) { + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_ht, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_40mhz, + tvb, offset, 2, vw_rflags); + proto_tree_add_boolean(flags_tree, hf_radiotap_flags_shortgi, + tvb, offset, 2, vw_rflags); + } + } + offset+=2; + length_remaining-=2; + + /* Need to add in 2 more bytes to the offset to account for the channel flags */ + offset+=2; + length_remaining-=2; + + rate = tvb_get_guint8(tvb, offset); + if (vw_rflags & IEEE80211_RADIOTAP_F_HT) { + ht_rate = getHTrate( rate, rflags ); + col_add_fstr(pinfo->cinfo, COL_TX_RATE, "%.1f", + ht_rate); + if (tree) { + proto_tree_add_uint_format(tap_tree, hf_radiotap_datarate, + tvb, offset, 1, tvb_get_guint8(tvb, offset), + "Data rate: %.1f (MCS %d)", ht_rate, rate & IEEE80211_PLCP_RATE_MASK); + } + } else { + col_add_fstr(pinfo->cinfo, COL_TX_RATE, "%d.%d", + (rate & IEEE80211_PLCP_RATE_MASK)/ 2, rate & 1 ? 5 : 0); + if (tree) { + proto_tree_add_uint_format(tap_tree, hf_radiotap_datarate, + tvb, offset, 1, tvb_get_guint8(tvb, offset), + "Data rate: %d.%d Mb/s", (rate & IEEE80211_PLCP_RATE_MASK)/ 2, + (rate & IEEE80211_PLCP_RATE_MASK) & 1 ? 5 : 0); + } + } + offset++; + length_remaining--; + + dbm = (gint8) tvb_get_guint8(tvb, offset); + align_offset = ALIGN_OFFSET(offset, 1); + offset++; + length_remaining--; + + tx_power = (gint8)tvb_get_guint8(tvb, offset); + if (dbm != 100) + { + col_add_fstr(pinfo->cinfo, COL_RSSI, "%d dBm", dbm); + if (tree) { + proto_tree_add_int_format(tap_tree, + hf_radiotap_dbm_antsignal, + tvb, offset, 1, dbm, + "RX SSI signal: %d dBm", dbm); + } + } + else if (tx_power != 100) + { + col_add_fstr(pinfo->cinfo, COL_RSSI, "%d dBm", tx_power); + if (tree) { + proto_tree_add_int_format(tap_tree, + hf_radiotap_txpower, + tvb, offset, 1, tx_power, + "Transmit power (TX): %d ", tx_power); + } + } + offset+=2; + length_remaining-=2; + + vw_flags = tvb_get_letohs(tvb, offset); + + if (tree) { + proto_tree_add_uint(tap_tree, hf_radiotap_vwf_txf, + tvb, offset, 2, (vw_flags & VW_RADIOTAPF_TXF) != 0); + proto_tree_add_uint(tap_tree, hf_radiotap_vwf_fcserr, + tvb, offset, 2, (vw_flags & VW_RADIOTAPF_FCSERR) != 0); + proto_tree_add_uint(tap_tree, hf_radiotap_vwf_dcrerr, + tvb, offset, 2, (vw_flags & VW_RADIOTAPF_DCRERR) != 0); + proto_tree_add_uint(tap_tree, hf_radiotap_vwf_retrerr, + tvb, offset, 2, (vw_flags & VW_RADIOTAPF_RETRERR) != 0); + proto_tree_add_uint(tap_tree, hf_radiotap_vwf_enctype, + tvb, offset, 2, (vw_flags & VW_RADIOTAPF_ENCMSK) >> + VW_RADIOTAPF_ENCSHIFT); + } + + offset+=2; + length_remaining-=2; + + align_offset = ALIGN_OFFSET(offset, 2); + offset += align_offset; + length_remaining -= align_offset; + + vw_ht_length = tvb_get_letohs(tvb, offset); + if ((tree) && (vw_ht_length != 0)) { + proto_tree_add_uint_format(tap_tree, hf_radiotap_vw_ht_length, + tvb, offset, 2, vw_ht_length, "HT length: %u (includes the sum of the pieces of the aggregate and their respective Start_Spacing + Delimiter + MPDU + Padding)", + vw_ht_length); + } + offset+=2; + length_remaining-=2; + + align_offset = ALIGN_OFFSET(offset, 2); + offset += align_offset; + length_remaining -= align_offset; + + vw_info = tvb_get_letohs(tvb, offset); + + if (tree) { + vwift = proto_tree_add_uint(tap_tree, hf_radiotap_vw_info, + tvb, offset, 2, vw_info); + vw_infoFlags_tree = proto_item_add_subtree(vwift, ett_radiotap_info); + + if (tx_power == 0) { /* then it's an rx case */ + /*FPGA_VER_vVW510021 version decodes */ + + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit8, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit9, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit10, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit11, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit12, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit13, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit14, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_rx_2_bit15, tvb, offset, 2, ENC_LITTLE_ENDIAN); + } else { /* it's a tx case */ + /* FPGA_VER_vVW510021 and VW_FPGA_VER_vVW510006 tx info decodes same*/ + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit10, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit11, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit12, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit13, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit14, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_infoFlags_tree, + hf_radiotap_vw_info_tx_bit15, tvb, offset, 2, ENC_LITTLE_ENDIAN); + } + } + + offset+=2; + length_remaining-=2; + + align_offset = ALIGN_OFFSET(offset, 4); + offset += align_offset; + length_remaining -= align_offset; + + vw_errors = tvb_get_letohl(tvb, offset); + + if (tree) { + vweft = proto_tree_add_uint(tap_tree, hf_radiotap_vw_errors, + tvb, offset, 4, vw_errors); + vw_errorFlags_tree = proto_item_add_subtree(vweft, + ett_radiotap_errors); + + /* build the individual subtrees for the various types of error flags */ + /* NOTE: as the upper 16 bits aren't used at the moment, we pretend that */ + /* the error flags field is only 16 bits (instead of 32) to save space */ + if (tx_power == 0) { + /* then it's an rx case */ + + /*FPGA_VER_vVW510021 version decodes */ + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit0, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit1, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit2, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + /* veriwave removed 8-2007, don't display reserved bit*/ + + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit4, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit5, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit6, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit7, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit8, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit10, tvb, offset, 2, ENC_LITTLE_ENDIAN); + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_rx_2_bit11, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + } else { /* it's a tx case */ + /* FPGA_VER_vVW510021 and VW_FPGA_VER_vVW510006 tx error decodes same*/ + + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_tx_bit1, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + proto_tree_add_item(vw_errorFlags_tree, + hf_radiotap_vw_errors_tx_bit5, tvb, offset, 2, ENC_LITTLE_ENDIAN); + + } + } + + offset+=4; + length_remaining-=4; + + /* This handles the case of an FCS existing at the end of the frame. */ + if (rflags & IEEE80211_RADIOTAP_F_FCS) + pinfo->pseudo_header->ieee_802_11.fcs_len = 4; + else + pinfo->pseudo_header->ieee_802_11.fcs_len = 0; + + /* Grab the rest of the frame. */ + next_tvb = tvb_new_subset(tvb, length, -1, -1); + + /* If we had an in-header FCS, check it. */ + if (hdr_fcs_ti) { + /* It would be very strange for the header to have an FCS for the + * frame *and* the frame to have the FCS at the end, but it's possible, so + * take that into account by using the FCS length recorded in pinfo. */ + + /* Watch out for [erroneously] short frames */ + if (tvb_length(next_tvb) > (unsigned int) pinfo->pseudo_header->ieee_802_11.fcs_len) { + guint32 sent_fcs = 0; + calc_fcs = crc32_802_tvb(next_tvb, + tvb_length(next_tvb) - pinfo->pseudo_header->ieee_802_11.fcs_len); + + /* By virtue of hdr_fcs_ti being set, we know that 'tree' is set, + * so there's no need to check it here. */ + if (calc_fcs == sent_fcs) { + proto_item_append_text(hdr_fcs_ti, " [correct]"); + } + else { + proto_item_append_text(hdr_fcs_ti, " [incorrect, should be 0x%08x]", calc_fcs); + proto_tree_add_boolean(tap_tree, hf_radiotap_fcs_bad, + tvb, 0, 4, TRUE); + } + } + else { + proto_item_append_text(hdr_fcs_ti, + " [cannot verify - not enough data]"); + } + } + + /* dissect the 802.11 header next */ + call_dissector((rflags & IEEE80211_RADIOTAP_F_DATAPAD) ? + ieee80211_datapad_handle : ieee80211_handle, + next_tvb, pinfo, tree); +} + +void proto_register_ixveriwave(void) +{ + /* value_strings for TX/RX and FCS error flags */ + static const value_string tx_rx_type[] = { + { 0, "Received" }, + { 1, "Transmitted" }, + { 0, NULL }, + }; + + static const value_string fcserr_type[] = { + { 0, "Correct" }, + { 1, "Incorrect" }, + { 0, NULL }, + }; + + static const true_false_string preamble_type = { + "Short", + "Long", + }; + + /* Added value_string for decrypt error flag */ + static const value_string decrypterr_type[] = { + { 0, "Decrypt Succeeded" }, + { 1, "Decrypt Failed" }, + { 0, NULL }, + }; + + /* Added value_string for excess retry error flag */ + static const value_string retryerr_type[] = { + { 0, "Retry limit not reached" }, + { 1, "Excess retry abort" }, + { 0, NULL }, + }; + + /* Added value_string for encryption type field */ + static const value_string encrypt_type[] = { + { 0, "No encryption" }, + { 1, "WEP encryption" }, + { 2, "TKIP encryption" }, + { 3, "AES-CCMP encryption" }, + { 0, NULL }, + }; + + static hf_register_info hf[] = { + { &hf_ixveriwave_frame_length, + { "Actual frame length", "ixveriwave.frame_length", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_msdu_length, + { "MSDU length", "ixveriwave.msdu_length", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_vcid, + { "Client ID", "ixveriwave.clientid", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_flowid, + { "Flow ID", "ixveriwave.flowid", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_seqnum, + { "Sequence number", "ixveriwave.seqnum", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_mslatency, + { "Msec latency", "ixveriwave.mslatency", + FT_FLOAT, 0, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_latency, + { "Latency", "ixveriwave.latency", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave, + { "Signature (32 LSBs)", "ixveriwave.sig_ts", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_startt, + { "Starting frame timestamp", "ixveriwave.startt", + FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_endt, + { "Ending frame timestamp", "ixveriwave.endt", + FT_UINT64, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_pktdur, + { "Packet duration", "ixveriwave.pktdur", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_ifg, + { "Inter-frame gap (usecs)", "ixveriwave.ifg", + FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vwf_txf, + { "Frame direction", "ixveriwave.vwflags.txframe", + FT_UINT32, BASE_DEC, VALS(tx_rx_type), 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vwf_fcserr, + { "MAC FCS check", "ixveriwave.vwflags.fcserr", + FT_UINT32, BASE_DEC, VALS(fcserr_type), 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_info, + { "Info field", "ixveriwave.info", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + + { &hf_ixveriwave_vw_info_retryCount, + { "Info field retry count", "ixveriwave.info", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + +/* tx info decodes for VW510024 and 510012 */ +/* we don't need to enumerate through these, basically for both, +info is the retry count. for 510024, the 15th bit indicates if +the frame was impressed on the enet tx media with one or more octets having tx_en +framing signal deasserted. this is caused by software setting the drain all register bit. +*/ + { &hf_ixveriwave_vw_info_tx_bit15, + { "Info bit 15-frame was impressed on the ent tx media with one or more octets having tx_en framing signal deasserted.", "ixveriwave.info.bit15", + FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL } }, + + /* rx info decodes for fpga ver VW510024 */ + /*all are reserved*/ + + /* rx info decodes for fpga ver VW510012 */ + { &hf_ixveriwave_vw_info_rx_1_bit8, + { "Go no flow", "ixveriwave.info.bit8", + FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL } }, + { &hf_ixveriwave_vw_info_rx_1_bit9, + { "Go with flow", "ixveriwave.info.bit9", + FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL } }, + + { &hf_ixveriwave_vw_error, + { "Errors", "ixveriwave.error", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + /* tx error decodes for VW510024 and previous versions */ + + { &hf_ixveriwave_vw_error_tx_bit1, + { "Packet FCS error", "ixveriwave.error.bit1", + FT_BOOLEAN, 12, NULL, 0x0002, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_tx_bit5, + { "IP checksum error", "ixveriwave.error.bit5", + FT_BOOLEAN, 12, NULL, 0x0020, NULL, HFILL } }, + /*bit 6 is actually reserved in 500012, but i thought it would be okay to leave it here*/ + { &hf_ixveriwave_vw_error_tx_bit9, + { "Underflow error", "ixveriwave.error.bit9", + FT_BOOLEAN, 12, NULL, 0x0200, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_tx_bit10, + { "Late collision error", "ixveriwave.error.bit10", + FT_BOOLEAN, 12, NULL, 0x0400, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_tx_bit11, + { "Excessive collisions error", "ixveriwave.error.bit11", + FT_BOOLEAN, 12, NULL, 0x0800, NULL, HFILL } }, + /*all other bits are reserved */ + + /* rx error decodes for fpga ver VW510012 and VW510024 */ + { &hf_ixveriwave_vw_error_rx_1_bit0, + { "Alignment error", "ixveriwave.error.bit0", + FT_BOOLEAN, 12, NULL, 0x0001, "error bit 0", HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit1, + { "Packet FCS error", "ixveriwave.error.bit1", + FT_BOOLEAN, 12, NULL, 0x0002, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit2, + { "Bad magic byte signature.", "ixveriwave.error.bit2", + FT_BOOLEAN, 12, NULL, 0x0004, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit3, + { "Bad payload checksum.", "ixveriwave.error.bit3", + FT_BOOLEAN, 12, NULL, 0x0008, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit4, + { "Frame too long error", "ixveriwave.error.bit4", + FT_BOOLEAN, 12, NULL, 0x0010, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit5, + { "IP checksum error", "ixveriwave.error.bit5", + FT_BOOLEAN, 12, NULL, 0x0020, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit6, + { "TCP/ICMP/IGMP/UDP checksum error", "ixveriwave.error.bit6", + FT_BOOLEAN, 12, NULL, 0x0040, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit7, + { "ID mismatch(for fpga510012)", "ixveriwave.error.bit7", + FT_BOOLEAN, 12, NULL, 0x0080, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit8, + { "Length error", "ixveriwave.error.bit8", + FT_BOOLEAN, 12, NULL, 0x0100, NULL, HFILL } }, + { &hf_ixveriwave_vw_error_rx_1_bit9, + { "Underflow", "ixveriwave.error.bit9", + FT_BOOLEAN, 12, NULL, 0x0200, NULL, HFILL } }, + { &hf_radiotap_vw_errors_tx_bit1, + { "Packet FCS error", "ixveriwave.errors.bit1", + FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL } }, + { &hf_radiotap_vw_errors_tx_bit5, + { "IP checksum error", "ixveriwave.errors.bit5", + FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL } }, + + /* All other enumerations are reserved.*/ + + { &hf_ixveriwave_vw_l4id, + { "Layer 4 ID", "ixveriwave.layer4id", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + + /* Presense flags */ + #define RADIOTAP_MASK_VW_FPGA_VERSION (1 << VW_RADIOTAP_FPGA_VERSION) + #define RADIOTAP_MASK_VW_MCID (1 << VW_RADIOTAP_MCID) + #define RADIOTAP_MASK_VW_ERRORS (1 << VW_RADIOTAP_ERRORS) + #define RADIOTAP_MASK_VW_INFO (1 << VW_RADIOTAP_INFO) + #define RADIOTAP_MASK_VW_MSDU_LENGTH (1 << VW_RADIOTAP_MSDU_LENGTH) + #define RADIOTAP_MASK_VW_HT_LENGTH (1 << VW_RADIOTAP_HT_LENGTH) + #define RADIOTAP_MASK_VW_FLOWID (1 << VW_RADIOTAP_FLOWID) + #define RADIOTAP_MASK_VW_SEQNUM (1 << VW_RADIOTAP_SEQNUM) + #define RADIOTAP_MASK_VW_LATENCY (1 << VW_RADIOTAP_LATENCY) + #define RADIOTAP_MASK_VW_SIG_TS (1 << VW_RADIOTAP_SIG_TS) + #define RADIOTAP_MASK_VW_STARTT (1 << VW_RADIOTAP_STARTT) + #define RADIOTAP_MASK_VW_ENDT (1 << VW_RADIOTAP_ENDT) + #define RADIOTAP_MASK_VW_PKTDUR (1 << VW_RADIOTAP_PKTDUR) + #define RADIOTAP_MASK_VW_IFG (1 << VW_RADIOTAP_IFG) + /* end veriwave addition*/ + + { &hf_radiotap_datarate, + { "Data rate", "ixveriwave.datarate", + FT_UINT32, BASE_DEC, NULL, 0x0, + "Speed this frame was sent/received at", HFILL } }, + + /* Boolean 'present.flags' flags */ + { &hf_radiotap_flags, + { "Flags", "ixveriwave.flags", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + + { &hf_radiotap_flags_cfp, + { "CFP", "ixveriwave.flags.cfp", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_CFP, + "Sent/Received during CFP", HFILL } }, + + { &hf_radiotap_flags_preamble, + { "Preamble", "ixveriwave.flags.preamble", + FT_BOOLEAN, 12, TFS(&preamble_type), IEEE80211_RADIOTAP_F_SHORTPRE, + "Sent/Received with short preamble", HFILL } }, + + { &hf_radiotap_flags_wep, + { "WEP", "ixveriwave.flags.wep", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_WEP, + "Sent/Received with WEP encryption", HFILL } }, + + { &hf_radiotap_flags_frag, + { "Fragmentation", "ixveriwave.flags.frag", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_FRAG, + "Sent/Received with fragmentation", HFILL } }, + + { &hf_radiotap_flags_fcs, + { "FCS at end", "ixveriwave.flags.fcs", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_FCS, + "Frame includes FCS at end", HFILL } }, + + { &hf_radiotap_flags_datapad, + { "Data Pad", "ixveriwave.flags.datapad", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_DATAPAD, + "Frame has padding between 802.11 header and payload", HFILL } }, + + { &hf_radiotap_flags_ht, + { "HT frame", "ixveriwave.flags.ht", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_HT, NULL, HFILL } }, + + { &hf_radiotap_flags_40mhz, + { "40 MHz channel bandwidth", "ixveriwave.flags.40mhz", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_40MHZ, NULL, HFILL } }, + + { &hf_radiotap_flags_shortgi, + { "Short guard interval", "ixveriwave.flags.shortgi", + FT_BOOLEAN, 12, NULL, IEEE80211_RADIOTAP_F_SHORTGI, NULL, HFILL } }, + + { &hf_radiotap_dbm_antsignal, + { "SSI Signal (dBm)", "ixveriwave.dbm_antsignal", + FT_INT32, BASE_DEC, NULL, 0x0, + "RF signal power at the antenna from a fixed, arbitrary value in decibels from one milliwatt", HFILL } }, + + { &hf_radiotap_txpower, + { "Transmit power", "ixveriwave.txpower", + FT_INT32, BASE_DEC, NULL, 0x0, + "Transmit power in decibels per one milliwatt (dBm)", HFILL } }, + + /* Boolean 'present' flags */ + /* VeriWave-specific flags */ + { &hf_radiotap_vwf_txf, + { "Frame direction", "ixveriwave.vwflags.txframe", + FT_UINT32, BASE_DEC, VALS(tx_rx_type), 0x0, NULL, HFILL } }, + + { &hf_radiotap_vwf_fcserr, + { "MAC FCS check", "ixveriwave.vwflags.fcserr", + FT_UINT32, BASE_DEC, VALS(fcserr_type), 0x0, NULL, HFILL } }, + + { &hf_radiotap_vwf_dcrerr, + { "Decryption error", "ixveriwave.vwflags.decrypterr", + FT_UINT32, BASE_DEC, VALS(decrypterr_type), 0x0, NULL, HFILL } }, + + { &hf_radiotap_vwf_retrerr, + { "TX retry limit", "ixveriwave.vwflags.retryerr", + FT_UINT32, BASE_DEC, VALS(retryerr_type), 0x0, NULL, HFILL } }, + + { &hf_radiotap_vwf_enctype, + { "Encryption type", "ixveriwave.vwflags.encrypt", + FT_UINT32, BASE_DEC, VALS(encrypt_type), 0x0, NULL, HFILL } }, + + /* start VeriWave-specific radiotap header elements 6-2007 */ + { &hf_radiotap_vw_ht_length, + { "Total IP length (incl all pieces of an aggregate)", "ixveriwave.ht_length", + FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } }, + + { &hf_radiotap_vw_errors, + { "Errors", "ixveriwave.errors", + FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + + /* rx error decodes for fpga ver VW510006 */ + { &hf_radiotap_vw_errors_rx_1_bit0, + { "L1 error", "ixveriwave.errors.bit0", + FT_BOOLEAN, 16, NULL, 0x0001, "error bit 0", HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit1, + { "Packet FCS error", "ixveriwave.errors.bit1", + FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit2, + { "Bad magic byte signature.", "ixveriwave.errors.bit2", + FT_BOOLEAN, 16, NULL, 0x0004, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit3, + { "Bad payload checksum.", "ixveriwave.errors.bit3", + FT_BOOLEAN, 16, NULL, 0x0008, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit4, + { "Duplicate MPDU", "ixveriwave.errors.bit4", + FT_BOOLEAN, 16, NULL, 0x0010, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit5, + { "IP checksum error", "ixveriwave.errors.bit5", + FT_BOOLEAN, 16, NULL, 0x0020, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit6, + { "TCP/ICMP/IGMP/UDP checksum error", "ixveriwave.errors.bit6", + FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit7, + { "Reserved", "ixveriwave.errors.bit7", + FT_BOOLEAN, 16, NULL, 0x0080, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit8, + { "RX WEP IVC / TKIP/CCMP MIC miscompare", "ixveriwave.errors.bit8", + FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit9, + { "RX TKIP / CCMP TSC SEQERR", "ixveriwave.errors.bit9", + FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit10, + { "RX crypto short", "ixveriwave.errors.bit10", + FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit11, + { "RX EXTIV fault A", "ixveriwave.errors.bit11", + FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit12, + { "RX EXTIV fault B", "ixveriwave.errors.bit12", + FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit13, + { "RX protected fault A", "ixveriwave.errors.bit13", + FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit14, + { "RX protected fault B", "ixveriwave.errors.bit14", + FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_1_bit15, + { "Reserved", "ixveriwave.errors.bit15", + FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL } }, + /* All other enumerations are reserved.*/ + + /* rx error decodes for fpga ver VW510021 */ + { &hf_radiotap_vw_errors_rx_2_bit0, + { "CRC16 or parity error", "ixveriwave.errors.bit0", + FT_BOOLEAN, 16, NULL, 0x0001, "error bit 0", HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit1, + { "Non-supported rate or service field", "ixveriwave.errors.bit1", + FT_BOOLEAN, 16, NULL, 0x0002, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit2, + { "Short frame error. Frame is shorter than length.", "ixveriwave.errors.bit2", + FT_BOOLEAN, 16, NULL, 0x0004, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit4, + { "FCS_Error", "ixveriwave.errors.bit4", + FT_BOOLEAN, 16, NULL, 0x0010, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit5, + { "L2 de-aggregation error", "ixveriwave.errors.bit5", + FT_BOOLEAN, 16, NULL, 0x0020, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit6, + { "Duplicate MPDU", "ixveriwave.errors.bit6", + FT_BOOLEAN, 16, NULL, 0x0040, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit7, + { "Bad_Sig: Bad flow magic number (includes bad flow crc16)", "ixveriwave.errors.bit7", + FT_BOOLEAN, 16, NULL, 0x0080, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit8, + { "Bad flow payload checksum", "ixveriwave.errors.bit8", + FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit10, + { "Bad IP checksum error", "ixveriwave.errors.bit10", + FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL } }, + + { &hf_radiotap_vw_errors_rx_2_bit11, + { "L4(TCP/ICMP/IGMP/UDP) checksum error", "ixveriwave.errors.bit11", + FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL } }, + + { &hf_radiotap_vw_info, + { "Info field", "ixveriwave.info", + FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL } }, + + /* tx info decodes for VW510021 and previous versions */ + { &hf_radiotap_vw_info_tx_bit10, + { "MPDU of A-MPDU", "ixveriwave.info.bit10", + FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL } }, + + { &hf_radiotap_vw_info_tx_bit11, + { "First MPDU of A-MPDU", "ixveriwave.info.bit11", + FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL } }, + + { &hf_radiotap_vw_info_tx_bit12, + { "Last MPDU of A-MPDU", "ixveriwave.info.bit12", + FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_tx_bit13, + { "MSDU of A-MSDU", "ixveriwave.info.bit13", + FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_tx_bit14, + { "First MSDU of A-MSDU", "ixveriwave.info.bit14", + FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_tx_bit15, + { "Last MSDU of A-MSDU", "ixveriwave.info.bit15", + FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL } }, + /*v510006 uses bits */ + + /* rx info decodes for fpga ver VW510021 */ + { &hf_radiotap_vw_info_rx_2_bit8, + { "ACK withheld from frame", "ixveriwave.info.bit8", + FT_BOOLEAN, 16, NULL, 0x0100, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit9, + { "Sent CTS to self before data", "ixveriwave.info.bit9", + FT_BOOLEAN, 16, NULL, 0x0200, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit10, + { "MPDU of an A-MPDU", "ixveriwave.info.bit10", + FT_BOOLEAN, 16, NULL, 0x0400, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit11, + { "First MPDU of A-MPDU", "ixveriwave.info.bit11", + FT_BOOLEAN, 16, NULL, 0x0800, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit12, + { "Last MPDU of A-MPDU", "ixveriwave.info.bit12", + FT_BOOLEAN, 16, NULL, 0x1000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit13, + { "MSDU of A-MSDU", "ixveriwave.info.bit13", + FT_BOOLEAN, 16, NULL, 0x2000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit14, + { "First MSDU of A-MSDU", "ixveriwave.info.bit14", + FT_BOOLEAN, 16, NULL, 0x4000, NULL, HFILL } }, + + { &hf_radiotap_vw_info_rx_2_bit15, + { "Last MSDU of A-MSDU", "ixveriwave.info.bit15", + FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL } }, + }; + + static gint *ett[] = { + &ett_commontap, + &ett_commontap_times, + &ett_ethernettap_info, + &ett_ethernettap_error, + &ett_ethernettap_flags, + &ett_radiotap_flags, + &ett_radiotap_info, + &ett_radiotap_times, + &ett_radiotap_errors + }; + + proto_ixveriwave = proto_register_protocol("ixveriwave", "ixveriwave", "ixveriwave"); + proto_register_field_array(proto_ixveriwave, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + register_dissector("ixveriwave", dissect_ixveriwave, proto_ixveriwave); +} + +void proto_reg_handoff_ixveriwave(void) +{ + dissector_handle_t ixveriwave_handle; + + /* handle for ethertype dissector */ + ethernet_handle = find_dissector("eth_withoutfcs"); + /* handle for 802.11 dissector */ + ieee80211_handle = find_dissector("wlan"); + ieee80211_datapad_handle = find_dissector("wlan_datapad"); + + ixveriwave_handle = create_dissector_handle(dissect_ixveriwave, proto_ixveriwave); + dissector_add_uint("wtap_encap", WTAP_ENCAP_IXVERIWAVE, ixveriwave_handle); +} + +static float getHTrate( guint8 rate, guint8 rflags ) +{ + int mcs_index, ndbps; + float symbol_tx_time, bitrate; + + /* Guard interval is the most significant bit. Short GI if the bit is set */ + if ( rate & 0x80) + symbol_tx_time = (float)3.6; + else + symbol_tx_time = (float)4.0; + + mcs_index = rate & IEEE80211_PLCP_RATE_MASK; + + if ( rflags & IEEE80211_RADIOTAP_F_40MHZ ) + ndbps = canonical_ndbps_40[ mcs_index - 8*(int)(mcs_index/8) ]; + else + ndbps = canonical_ndbps_20[ mcs_index - 8*(int)(mcs_index/8) ]; + + bitrate = ( ndbps * (((int)(mcs_index/8) + 1) )) / symbol_tx_time; + + return bitrate; +} + |