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wireshark/epan/dissectors/packet-mausb.c

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/* packet-mausb.c
* Routines for Media Agnostic USB dissection
* Copyright 2014, Intel Corporation
* Author: Sean O. Stalley <sean.stalley@intel.com>
*
* Dedicated to Robert & Dorothy Stalley
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* 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.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/expert.h>
#include <epan/oui.h>
#include "packet-tcp.h"
#include "packet-llc.h"
#include "packet-usb.h"
void proto_reg_handoff_mausb(void);
void proto_register_mausb(void);
void proto_register_wfa_oui(void);
/* For SNAP Packets */
static int hf_llc_mausb_pid = -1;
/* Initialize the protocol and registered fields */
static int proto_mausb = -1;
static int hf_mausb_version = -1;
static int hf_mausb_flags = -1;
static int hf_mausb_flag_host = -1;
static int hf_mausb_flag_retry = -1;
static int hf_mausb_flag_timestamp = -1;
static int hf_mausb_flag_reserved = -1;
static int hf_mausb_type = -1;
static int hf_mausb_length = -1;
static int hf_mausb_dev_handle = -1;
static int hf_mausb_ep_handle = -1;
static int hf_mausb_ep_handle_d = -1;
static int hf_mausb_ep_handle_ep_num = -1;
static int hf_mausb_ep_handle_dev_addr = -1;
static int hf_mausb_ep_handle_bus_num = -1;
static int hf_mausb_ma_dev_addr = -1;
static int hf_mausb_ssid = -1;
static int hf_mausb_status = -1;
/* management packet specific */
static int hf_mausb_token = -1;
static int hf_mausb_mgmt_pad = -1;
static int hf_mausb_mgmt_ep_handle_num = -1;
static int hf_mausb_mgmt_ep_handle_pad = -1;
static int hf_mausb_mgmt_ep_des_num = -1;
static int hf_mausb_mgmt_ep_des_size = -1;
static int hf_mausb_mgmt_ep_des_pad = -1;
static int hf_mausb_mgmt_type_spec = -1;
static int hf_mausb_mgmt_type_spec_generic = -1;
/* CapResp packet specific */
static int hf_mausb_cap_resp_num_ep = -1;
static int hf_mausb_cap_resp_num_dev = -1;
static int hf_mausb_cap_resp_num_stream = -1;
static int hf_mausb_cap_resp_dev_type = -1;
static int hf_mausb_cap_resp_desc_count = -1;
static int hf_mausb_cap_resp_desc_len = -1;
static int hf_mausb_cap_resp_transfer_req = -1;
static int hf_mausb_cap_resp_mgmt_req = -1;
static int hf_mausb_cap_resp_rsvd = -1;
static int hf_mausb_dev_cap_len = -1;
static int hf_mausb_dev_cap_type = -1;
static int hf_mausb_dev_cap_generic = -1;
/* EPHandleReq & Resp packet specific */
static int hf_mausb_ep_handle_req_pad = -1;
static int hf_mausb_ep_handle_resp_dir = -1;
static int hf_mausb_ep_handle_resp_iso = -1;
static int hf_mausb_ep_handle_resp_lman = -1;
static int hf_mausb_ep_handle_resp_valid = -1;
static int hf_mausb_ep_handle_resp_ccu = -1;
static int hf_mausb_ep_handle_resp_buf_size = -1;
static int hf_mausb_ep_handle_resp_iso_prog_dly = -1;
static int hf_mausb_ep_handle_resp_iso_resp_dly = -1;
/* (Clear/Cancel)TransferReq & Resp packet specific */
static int hf_mausb_clear_transfers_info_block = -1;
static int hf_mausb_clear_transfers_status_block = -1;
static int hf_mausb_cancel_transfer_rsvd = -1;
static int hf_mausb_clear_transfers_req_num = -1;
static int hf_mausb_clear_transfers_req_rsvd = -1;
static int hf_mausb_clear_transfers_resp_num = -1;
static int hf_mausb_clear_transfers_resp_rsvd = -1;
static int hf_mausb_cancel_transfer_status = -1;
static int hf_mausb_cancel_transfer_rsvd_2 = -1;
static int hf_mausb_clear_transfers_status = -1;
static int hf_mausb_clear_transfers_partial = -1;
static int hf_mausb_clear_transfers_start_req_id = -1;
static int hf_mausb_clear_transfers_last_req_id = -1;
static int hf_mausb_clear_transfers_req_block_rsvd = -1;
static int hf_mausb_clear_transfers_resp_block_rsvd = -1;
static int hf_mausb_cancel_transfer_seq_num = -1;
static int hf_mausb_cancel_transfer_byte_offset = -1;
/* data packet specific */
static int hf_mausb_eps = -1;
static int hf_mausb_eps_rsvd = -1;
static int hf_mausb_tflags = -1;
static int hf_mausb_tflag_arq = -1;
static int hf_mausb_tflag_neg = -1;
static int hf_mausb_tflag_eot = -1;
static int hf_mausb_tflag_type = -1;
static int hf_mausb_tflag_rsvd = -1;
static int hf_mausb_num_iso_hdr = -1;
static int hf_mausb_iflags = -1;
static int hf_mausb_iflag_mtd = -1;
static int hf_mausb_iflag_hdr_format = -1;
static int hf_mausb_iflag_asap = -1;
static int hf_mausb_stream_id = -1;
static int hf_mausb_seq_num = -1;
static int hf_mausb_req_id = -1;
static int hf_mausb_present_time = -1;
static int hf_mausb_uframe = -1;
static int hf_mausb_frame = -1;
static int hf_mausb_num_segs = -1;
static int hf_mausb_timestamp = -1;
static int hf_mausb_delta = -1;
static int hf_mausb_nom_interval = -1;
static int hf_mausb_mtd = -1;
static int hf_mausb_rem_size_credit = -1;
static int hf_mausb_payload = -1;
/* expert info fields */
static expert_field ei_ep_handle_len = EI_INIT;
static expert_field ei_len = EI_INIT;
static expert_field ei_mgmt_type_undef = EI_INIT;
static expert_field ei_mgmt_type_spec_len_long = EI_INIT;
static expert_field ei_mgmt_type_spec_len_short = EI_INIT;
static expert_field ei_dev_cap_len = EI_INIT;
static expert_field ei_dev_cap_resp_desc_len = EI_INIT;
static expert_field ei_cap_resp_desc_len = EI_INIT;
/* MAUSB Version, per 6.2.1.1 */
#define MAUSB_VERSION_1_0 0x0
#define MAUSB_VERSION_MASK 0x0F
/* for dissecting snap packets */
/*
* TODO: determine assigned PID value
* (yet to be assigned as of Earth Day 2014)
*/
#define PID_MAUSB 0x1500
static const value_string mausb_pid_string[] = {
{ PID_MAUSB, "MAUSB" },
{ 0, NULL}
};
static const value_string mausb_version_string[] = {
{ MAUSB_VERSION_1_0, "MAUSB protocol version 1.0" },
{ 0, NULL}
};
/* Packet flags, per 6.2.1.2 */
#define MAUSB_FLAG_MASK 0xF0
#define MAUSB_FLAG_HOST (1 << 0)
#define MAUSB_FLAG_RETRY (1 << 1)
#define MAUSB_FLAG_TIMESTAMP (1 << 2)
#define MAUSB_FLAG_RESERVED (1 << 3)
#define MAUSB_FLAG_OFFSET 4
static const value_string mausb_flag_string[] = {
{ 0, "(None)" },
{ MAUSB_FLAG_HOST, "(Host)" },
{ MAUSB_FLAG_RETRY, "(Retry)" },
{ MAUSB_FLAG_TIMESTAMP, "(Timestamp)" },
{ MAUSB_FLAG_HOST | MAUSB_FLAG_RETRY, "(Host, Retry)" },
{ MAUSB_FLAG_HOST | MAUSB_FLAG_TIMESTAMP, "(Host, Timestamp)" },
{ MAUSB_FLAG_RETRY | MAUSB_FLAG_TIMESTAMP, "(Retry, Timestamp)" },
{ MAUSB_FLAG_HOST | MAUSB_FLAG_RETRY | MAUSB_FLAG_TIMESTAMP, "(Host, Retry, Timestamp)" },
{ 0, NULL}
};
/* Packet Types, per 6.2.1.3 */
#define MAUSB_PKT_TYPE_MASK 0xC0
#define MAUSB_PKT_TYPE_MGMT (0 << 6)
#define MAUSB_PKT_TYPE_CTRL (1 << 6)
#define MAUSB_PKT_TYPE_DATA (2 << 6)
/* Packet Subtypes, per 6.2.1.3 */
#define MAUSB_SUBTYPE_MASK 0x3F
enum mausb_pkt_type {
/* Management packets */
CapReq = 0x00 | MAUSB_PKT_TYPE_MGMT,
CapResp ,
USBDevHandleReq ,
USBDevHandleResp ,
EPHandleReq ,
EPHandleResp ,
EPActivateReq ,
EPActivateResp ,
EPInactivateReq ,
EPInactivateResp ,
EPResetReq ,
EPResetResp ,
ClearTransfersReq ,
ClearTransfersResp ,
EPHandleDeleteReq ,
EPHandleDeleteResp ,
DevResetReq ,
DevResetResp ,
ModifyEP0Req ,
ModifyEP0Resp ,
SetUSBDevAddrReq ,
SetUSBDevAddrResp ,
UpdateDevReq ,
UpdateDevResp ,
USBDevDisconnectReq ,
USBDevDisconnectResp ,
USBSuspendReq ,
USBSuspendResp ,
USBResumeReq ,
USBResumeResp ,
RemoteWakeReq ,
RemoteWakeResp ,
PingReq ,
PingResp ,
DevDisconnectReq ,
DevDisconnectResp ,
DevInitDisconnectReq ,
DevInitDisconnectResp ,
SynchReq ,
SynchResp ,
CancelTransferReq ,
CancelTransferResp ,
EPOpenStreamReq ,
EPOpenStreamResp ,
EPCloseStreamReq ,
EPCloseStreamResp ,
USBDevResetReq ,
USBDevResetResp ,
DevNotificationReq ,
DevNotificationResp ,
EPSetKeepAliveReq ,
EPSetKeepAliveResp ,
GetPortBWReq ,
GetPortBWResp ,
SleepReq ,
SleepResp ,
WakeReq ,
WakeResp ,
/* Vendor-Specific Management Packets */
VendorSpecificReq = 0x3E | MAUSB_PKT_TYPE_MGMT,
VendorSpecificResp ,
/* Control Packets */
TransferSetupReq = 0x00 | MAUSB_PKT_TYPE_CTRL,
TransferSetupResp ,
TransferTearDownConf ,
/* Data Packets */
TransferReq = 0x00 | MAUSB_PKT_TYPE_DATA,
TransferResp ,
TransferAck ,
IsochTransferReq ,
IsochTransferResp
};
/**
* Type & Subtype values for MAUSB packet variants, per 6.2.1.3, Table 5
*/
static const value_string mausb_type_string[] = {
/* Management packets */
{ CapReq , "CapReq" },
{ CapResp , "CapResp" },
{ USBDevHandleReq , "USBDevHandleReq" },
{ USBDevHandleResp , "USBDevHandleResp" },
{ EPHandleReq , "EPHandleReq" },
{ EPHandleResp , "EPHandleResp" },
{ EPActivateReq , "EPActivateReq" },
{ EPActivateResp , "EPActivateResp" },
{ EPInactivateReq , "EPInactivateReq" },
{ EPInactivateResp , "EPInactivateResp" },
{ EPResetReq , "EPResetReq" },
{ EPResetResp , "EPResetResp" },
{ ClearTransfersReq , "ClearTransfersReq" },
{ ClearTransfersResp , "ClearTransfersResp" },
{ EPHandleDeleteReq , "EPHandleDeleteReq" },
{ EPHandleDeleteResp , "EPHandleDeleteResp" },
{ DevResetReq , "DevResetReq" },
{ DevResetResp , "DevResetResp" },
{ ModifyEP0Req , "ModifyEP0Req" },
{ ModifyEP0Resp , "ModifyEP0Resp" },
{ SetUSBDevAddrReq , "SetUSBDevAddrReq" },
{ SetUSBDevAddrResp , "SetUSBDevAddrResp" },
{ UpdateDevReq , "UpdateDevReq" },
{ UpdateDevResp , "UpdateDevResp" },
{ USBDevDisconnectReq , "USBDevDisconnectReq" },
{ USBDevDisconnectResp , "USBDevDisconnectResp" },
{ USBSuspendReq , "USBSuspendReq" },
{ USBSuspendResp , "USBSuspendResp" },
{ USBResumeReq , "USBResumeReq" },
{ USBResumeResp , "USBResumeResp" },
{ RemoteWakeReq , "RemoteWakeReq" },
{ RemoteWakeResp , "RemoteWakeResp" },
{ PingReq , "PingReq" },
{ PingResp , "PingResp" },
{ DevDisconnectReq , "DevDisconnectReq " },
{ DevDisconnectResp , "DevDisconnectResp" },
{ DevInitDisconnectReq , "DevInitDisconnectReq" },
{ DevInitDisconnectResp, "DevInitDisconnectResp" },
{ SynchReq , "SynchReq" },
{ SynchResp , "SynchResp" },
{ CancelTransferReq , "CancelTransferReq" },
{ CancelTransferResp , "CancelTransferResp" },
{ EPOpenStreamReq , "EPOpenStreamReq" },
{ EPOpenStreamResp , "EPOpenStreamResp" },
{ EPCloseStreamReq , "EPCloseStreamReq" },
{ EPCloseStreamResp , "EPCloseStreamResp" },
{ USBDevResetReq , "USBDevResetReq" },
{ USBDevResetResp , "USBDevResetResp" },
{ DevNotificationReq , "DevNotificationReq" },
{ DevNotificationResp , "DevNotificationResp" },
{ EPSetKeepAliveReq , "EPSetKeepAliveReq" },
{ EPSetKeepAliveResp , "EPSetKeepAliveResp" },
{ GetPortBWReq , "GetPortBWReq" },
{ GetPortBWResp , "GetPortBWResp" },
{ SleepReq , "SleepReq" },
{ SleepResp , "SleepResp" },
{ WakeReq , "WakeReq" },
{ WakeResp , "WakeResp" },
/* Vendor-Specific Management Packets */
{ VendorSpecificReq , "VendorSpecificReq" },
{ VendorSpecificResp , "VendorSpecificResp" },
/* Control Packets */
{ TransferSetupReq , "TransferSetupReq" },
{ TransferSetupResp , "TransferSetupResp" },
{ TransferTearDownConf , "TransferTearDownConf" },
/* Data Packets */
{ TransferReq , "TransferReq" },
{ TransferResp , "TransferResp" },
{ TransferAck , "TransferAck" },
{ IsochTransferReq , "IsochTransferReq" },
{ IsochTransferResp , "IsochTransferResp" },
{ 0, NULL}
};
#define MAUSB_EP_HANDLE_D 0x0001
#define MAUSB_EP_HANDLE_EP_NUM 0x001e
#define MAUSB_EP_HANDLE_DEV_ADDR 0x0fe0
#define MAUSB_EP_HANDLE_BUS_NUM 0xf000
#define MAUSB_EP_HANDLE_D_OFFSET 0
#define MAUSB_EP_HANDLE_EP_NUM_OFFSET 1
#define MAUSB_EP_HANDLE_DEV_ADDR_OFFSET 5
#define MAUSB_EP_HANDLE_BUS_NUM_OFFSET 12
static const value_string mausb_status_string[] = {
{ 0, "SUCCESS (NO_ERROR)" },
{ 128, "UNSUCCESSFUL" },
{ 129, "INVALID_MA_USB_SESSION_STATE" },
{ 130, "INVALID_DEVICE_HANDLE" },
{ 131, "INVALID_EP_HANDLE" },
{ 132, "INVALID_EP_HANDLE_STATE" },
{ 133, "INVALID_REQUEST" },
{ 134, "MISSING_SEQUENCE_NUMBER" },
{ 135, "TRANSFER_PENDING" },
{ 136, "TRANSFER_EP_STALL" },
{ 137, "TRANSFER_SIZE_ERROR" },
{ 138, "TRANSFER_DATA_BUFFER_ERROR" },
{ 139, "TRANSFER_BABBLE_DETECTED" },
{ 140, "TRANSFER_TRANSACTION_ERROR" },
{ 141, "TRANSFER_SHORT_TRANSFER" },
{ 142, "TRANSFER_CANCELLED" },
{ 143, "INSUFFICENT_RESOURCES" },
{ 144, "NOT_SUFFICENT_BANDWIDTH" },
{ 145, "INTERNAL_ERROR" },
{ 146, "DATA_OVERRUN" },
{ 147, "DEVICE_NOT_ACCESSED" },
{ 148, "BUFFER_OVERRUN" },
{ 149, "BUSY" },
{ 150, "DROPPED_PACKET" },
{ 151, "ISOC_TIME_EXPIRED" },
{ 152, "ISOCH_TIME_INVALID" },
{ 153, "NO_USB_PING_RESPONSE" },
{ 154, "NOT_SUPPORTED" },
{ 155, "REQUEST_DENIED" },
{ 0, NULL}
};
/* Nuber of Isochronous Headers, per 6.5.1.7 */
#define MAUSB_NUM_ISO_HDR_MASK 0x0fff
/* I-Flags, per 6.5.1.8 */
#define MAUSB_IFLAG_ASAP (1 << 0)
#define MAUSB_IFLAG_HDR_FORMAT (3 << 1)
#define MAUSB_IFLAG_MTD (1 << 3)
#define MAUSB_IFLAG_OFFSET 12
#define MAUSB_IFLAG_MASK (0xF << MAUSB_IFLAG_OFFSET)
/* Presentation Time, per 6.5.1.9 */
#define MAUSB_PRESENT_TIME_MASK 0x000fffff
#define MAUSB_UFRAME_MASK 0x00000007
#define MAUSB_FRAME_MASK 0x000ffff8
/* Number of Segments, per 6.5.1.10 */
#define MAUSB_NUM_SEGS_MASK 0xfff00000
/* MA USB Global Time fields, per 6.6.1 */
#define MAUSB_DELTA_MASK 0x00000fff
#define MAUSB_INTERVAL_MASK 0xfffff000
#define MAUSB_TOKEN_MASK 0x03ff
#define MAUSB_MGMT_PAD_MASK 0xfffc
#define MAUSB_MGMT_NUM_EP_DES_MASK 0x001f
#define MAUSB_MGMT_SIZE_EP_DES_OFFSET 5
#define MAUSB_MGMT_SIZE_EP_DES_MASK (0x003f << MAUSB_MGMT_SIZE_EP_DES_OFFSET)
#define MAUSB_MGMT_CLEAR_TRANSFER_RESP_NUM_MASK 0x1f
/* CapResp Bitfield Masks */
#define MAUSB_CAP_RESP_NUM_STREAM_MASK 0x1f
#define MAUSB_CAP_RESP_DEV_TYPE_OFFSET 5
#define MAUSB_CAP_RESP_DEV_TYPE_MASK (0x07 << MAUSB_CAP_RESP_DEV_TYPE_OFFSET)
#define MAUSB_CAP_RESP_MGMT_REQ_MASK 0x0fff
#define MAUSB_CAP_RESP_RSVD_MASK 0xf000
static const value_string mausb_cap_resp_dev_type[] = {
{ 0, "Integrated Device" },
{ 1, "MAUSB 2.0 hub" },
{ 2, "MAUSB 3.1 hub" },
{ 0, NULL}
};
static const value_string mausb_dev_cap_string[] = {
{ 0, "Speed Capability" },
{ 1, "P-managed OUT Capabilities" },
{ 2, "Isochronous Capabilities" },
{ 3, "Synchronization Capabilities" },
{ 4, "Container ID Capability" },
{ 5, "Link Sleep Capability" },
{ 0, NULL}
};
enum mausb_dev_cap_type {
SpeedCap = 0,
PmanCap,
IsoCap,
SyncCap,
ContainerIDCap,
LinkSleepCap
};
#define DWORD_MASK 0xffffffff
#define MAUSB_MGMT_NUM_EP_HANDLE_PAD_MASK \
(DWORD_MASK & !(MAUSB_MGMT_NUM_EP_DES_MASK))
#define MAUSB_MGMT_EP_DES_PAD_MASK \
((DWORD_MASK & !(MAUSB_MGMT_NUM_EP_DES_MASK | \
MAUSB_MGMT_SIZE_EP_DES_MASK)) >> 8)
/* EPHandleResp Bitfield Masks */
#define MAUSB_EP_HANDLE_RESP_DIR_MASK (1 << 0)
#define MAUSB_EP_HANDLE_RESP_ISO_MASK (1 << 1)
#define MAUSB_EP_HANDLE_RESP_LMAN_MASK (1 << 2)
#define MAUSB_EP_HANDLE_RESP_VALID_MASK (1 << 3)
static const value_string mausb_eps_string[] = {
{ 0, "Unassigned" },
{ 1, "Active" },
{ 2, "Inactive" },
{ 3, "Halted" },
{ 0, NULL}
};
#define MAUSB_EPS_MASK 0x03
#define MAUSB_TFLAG_MASK 0xfc
#define MAUSB_TX_TYPE_CTRL (0 << 3)
#define MAUSB_TX_TYPE_ISOC (1 << 3)
#define MAUSB_TX_TYPE_BULK (2 << 3)
#define MAUSB_TX_TYPE_INTR (3 << 3)
#define MAUSB_TFLAG_OFFSET 2
#define MAUSB_TFLAG_ARQ (1 << 0)
#define MAUSB_TFLAG_NEG (1 << 1)
#define MAUSB_TFLAG_EOT (1 << 2)
#define MAUSB_TFLAG_TRANSFER_TYPE (3 << 3)
#define MAUSB_TFLAG_RSVD (1 << 5)
static const value_string mausb_transfer_type_string[] = {
{ 0, "Control" },
{ 1, "Isochronous" },
{ 2, "Bulk" },
{ 3, "Interrupt" },
{ 0, NULL}
};
static const value_string mausb_tflag_string[] = {
{ MAUSB_TX_TYPE_CTRL, "Control" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_ARQ, "Control (ARQ)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_NEG, "Control (NEG)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_EOT, "Control (EoT)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_NEG, "Control (ARQ, NEG)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_EOT, "Control (ARQ, EoT)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Control (NEG, EoT)" },
{ MAUSB_TX_TYPE_CTRL | MAUSB_TFLAG_ARQ
| MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Control (ARQ, NEG, EoT)" },
{ MAUSB_TX_TYPE_ISOC, "Isochronous" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_ARQ, "Isochronous (ARQ)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_NEG, "Isochronous (NEG)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_EOT, "Isochronous (EoT)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_NEG, "Isochronous (ARQ, NEG)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_EOT, "Isochronous (ARQ, EoT)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Isochronous (NEG, EoT)" },
{ MAUSB_TX_TYPE_ISOC | MAUSB_TFLAG_ARQ
| MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Isochronous (ARQ, NEG, EoT)" },
{ MAUSB_TX_TYPE_BULK, "Bulk" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_ARQ, "Bulk (ARQ)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_NEG, "Bulk (NEG)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_EOT, "Bulk (EoT)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_NEG, "Bulk (ARQ, NEG)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_EOT, "Bulk (ARQ, EoT)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Bulk (NEG, EoT)" },
{ MAUSB_TX_TYPE_BULK | MAUSB_TFLAG_ARQ
| MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Bulk (ARQ, NEG, EoT)" },
{ MAUSB_TX_TYPE_INTR, "Interrupt" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_ARQ, "Interrupt (ARQ)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_NEG, "Interrupt (NEG)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_EOT, "Interrupt (EoT)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_NEG, "Interrupt (ARQ, NEG)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_ARQ | MAUSB_TFLAG_EOT, "Interrupt (ARQ, EoT)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Interrupt (NEG, EoT)" },
{ MAUSB_TX_TYPE_INTR | MAUSB_TFLAG_ARQ
| MAUSB_TFLAG_NEG | MAUSB_TFLAG_EOT, "Interrupt (ARQ, NEG, EoT)" },
{ 0, NULL}
};
const true_false_string tfs_ep_handle_resp_dir = { "IN", "OUT or Control" };
/* TODO: Short/Medium/Long Format */
/* The meaning of the format number is based on the Iso packet contents */
static const value_string mausb_iflag_string[] = {
{ (0 << 1), "Format 0" },
{ (0 << 1) | MAUSB_IFLAG_MTD, "Format 0 (MTD)" },
{ (0 << 1) | MAUSB_IFLAG_ASAP, "Format 0 (ASAP)" },
{ (0 << 1) | MAUSB_IFLAG_MTD | MAUSB_IFLAG_ASAP, "Format 0 (MTD, ASAP)"},
{ (1 << 1), "Format 1" },
{ (1 << 1) | MAUSB_IFLAG_MTD, "Format 1 (MTD)" },
{ (1 << 1) | MAUSB_IFLAG_ASAP, "Format 1 (ASAP)" },
{ (1 << 1) | MAUSB_IFLAG_MTD | MAUSB_IFLAG_ASAP, "Format 1 (MTD, ASAP)"},
{ (2 << 1), "Format 2" },
{ (2 << 1) | MAUSB_IFLAG_MTD, "Format 2 (MTD)" },
{ (2 << 1) | MAUSB_IFLAG_ASAP, "Format 2 (ASAP)" },
{ (2 << 1) | MAUSB_IFLAG_MTD | MAUSB_IFLAG_ASAP, "Format 2 (MTD, ASAP)"},
{ 0, NULL}
};
#define MAUSB_TRANSFER_TYPE_OFFSET 3 /* Offset from start of TFlags Field */
/* (EPS not included) */
#define MAUSB_TRANSFER_TYPE_CTRL (0 << MAUSB_TRANSFER_TYPE_OFFSET)
#define MAUSB_TRANSFER_TYPE_ISO (1 << MAUSB_TRANSFER_TYPE_OFFSET)
#define MAUSB_TRANSFER_TYPE_BULK (2 << MAUSB_TRANSFER_TYPE_OFFSET)
#define MAUSB_TRANSFER_TYPE_INTERRUPT (3 << MAUSB_TRANSFER_TYPE_OFFSET)
static const value_string mausb_cancel_transfer_status_string[] = {
{ 0, "Cancel Unsuccessful"},
{ 1, "Canceled before any data was moved"},
{ 2, "Canceled after some data was moved"},
{ 3, "Transfer Not Found"},
{ 0, NULL}
};
#define MAUSB_CANCEL_TRANSFER_STATUS_MASK 0x03
#define MAUSB_CLEAR_TRANSFERS_RESP_NUM_MASK 0x1f
#define MAUSB_CLEAR_TRANSFERS_STATUS_MASK 0x01
#define MAUSB_CLEAR_TRANSFERS_PARTIAL_MASK 0x02
#define MAUSB_CLEAR_TRANSFERS_RESP_BLOCK_RSVD_MASK 0xfffffffc
/** Common header fields, per section 6.2.1 */
struct mausb_header {
/* DWORD 0 */
guint8 ver_flags;
guint8 type;
guint16 length;
/* DWORD 1 */
guint16 handle;
guint8 ma_dev_addr;
guint8 mass_id;
/* DWORD 2 */
guint8 status;
union {
guint16 token;
struct {
guint8 eps_tflags;
union {
guint16 stream_id;
guint16 num_headers_iflags;
} u1;
/* DWORD 3 */
guint32 seq_num; /* Note: only 24 bits used */
guint8 req_id;
/* DWORD 4 */
union {
guint32 credit;
guint32 present_time_num_seg;
} u2;
/* DWORD 5 */
guint32 timestamp;
/* DWORD 6 */
guint32 tx_dly; /* Note: if no timestamp, tx_dly will be in DWORD 5 */
} s;
} u;
};
/* We need at least the first DWORD to determine the packet length (for TCP) */
#define MAUSB_MIN_LENGTH 4
#define MAUSB_MIN_MGMT_LENGTH 12
#define MAUSB_MIN_DATA_LENGTH 20
#define MAUSB_COMMON_LEN 9
/*** Packet parsing helper functions ***/
static gboolean mausb_is_from_host(struct mausb_header *header)
{
return (MAUSB_FLAG_HOST << MAUSB_FLAG_OFFSET) & header->ver_flags;
}
static gboolean mausb_is_mgmt_pkt(struct mausb_header *header)
{
return MAUSB_PKT_TYPE_MGMT == (header->type & MAUSB_PKT_TYPE_MASK);
}
static gboolean mausb_is_data_pkt(struct mausb_header *header)
{
return MAUSB_PKT_TYPE_DATA == (header->type & MAUSB_PKT_TYPE_MASK);
}
static gboolean mausb_is_transfer_req(struct mausb_header *header)
{
return TransferReq == header->type;
}
static gboolean mausb_is_transfer_ack(struct mausb_header *header)
{
return TransferAck == header->type;
}
static gint8 mausb_tx_type(struct mausb_header *header)
{
return (header->u.s.eps_tflags >> MAUSB_TFLAG_OFFSET) & MAUSB_TFLAG_TRANSFER_TYPE;
}
static gboolean mausb_is_iso_pkt(struct mausb_header *header)
{
return MAUSB_TX_TYPE_ISOC == mausb_tx_type(header);
}
static gboolean mausb_has_timestamp(struct mausb_header *header)
{
return (MAUSB_FLAG_TIMESTAMP << MAUSB_FLAG_OFFSET) & header->ver_flags;
}
static gboolean mausb_has_mtd(struct mausb_header *header)
{
return (MAUSB_IFLAG_MTD << MAUSB_IFLAG_OFFSET) & header->u.s.u1.num_headers_iflags;
}
static gboolean mausb_has_setup_data(struct mausb_header *header)
{
if ((TransferReq == header->type ) &&
(mausb_is_from_host(header)) &&
(0 == header->u.s.seq_num) &&
(MAUSB_TX_TYPE_CTRL == mausb_tx_type(header))) {
return TRUE;
}
return FALSE;
}
static gboolean mausb_is_setup_response(struct mausb_header *header)
{
if ((TransferResp == header->type) &&
(!mausb_is_from_host(header)) &&
(MAUSB_TX_TYPE_CTRL == mausb_tx_type(header))) {
return TRUE;
}
return FALSE;
}
/*** EP Handle parsing helper functions */
static guint8 mausb_ep_handle_ep_num(guint16 handle) {
return (handle & MAUSB_EP_HANDLE_EP_NUM) >> MAUSB_EP_HANDLE_EP_NUM_OFFSET;
}
static guint8 mausb_ep_handle_dev_addr(guint16 handle) {
return (handle & MAUSB_EP_HANDLE_DEV_ADDR) >> MAUSB_EP_HANDLE_DEV_ADDR_OFFSET;
}
static guint8 mausb_ep_handle_bus_num(guint16 handle) {
return (handle & MAUSB_EP_HANDLE_BUS_NUM) >> MAUSB_EP_HANDLE_BUS_NUM_OFFSET;
}
/* returns the length field of the MAUSB packet */
static guint mausb_get_pkt_len(packet_info *pinfo _U_, tvbuff_t *tvb,
int offset, void *data _U_)
{
return tvb_get_letohs(tvb, offset + 2);
}
/* Global Port Preference */
static unsigned int mausb_tcp_port_pref = 0;
static unsigned int mausb_udp_port_pref = 0;
/* Initialize the subtree pointers */
static gint ett_mausb = -1;
static gint ett_mausb_flags = -1;
static gint ett_mausb_ep_handle = -1;
static gint ett_mausb_tflags = -1;
static gint ett_mausb_iflags = -1;
static gint ett_mausb_present_time = -1;
static gint ett_mausb_timestamp = -1;
static gint ett_mgmt = -1;
static gint ett_dev_cap = -1;
static gint ett_clear_transfers_block = -1;
#define USB_DT_EP_SIZE 7
#define USB_DT_SS_EP_COMP_SIZE 6
#define USB_DT_ISO_SSP_EP_COMP_SIZE 8
/* Size of EPHandleReq Descriptors */
#define MAUSB_EP_DES_SIZE 8
#define MAUSB_SS_EP_DES_SIZE 16
#define MAUSB_ISO_SSP_EP_DES_SIZE 24
/* EPHandleReq Descriptor Padding */
#define MAUSB_EP_DES_PAD (MAUSB_EP_DES_SIZE - USB_DT_EP_SIZE)
#define MAUSB_SS_EP_DES_PAD (MAUSB_SS_EP_DES_SIZE - \
(USB_DT_EP_SIZE + USB_DT_SS_EP_COMP_SIZE))
#define MAUSB_ISO_SSP_EP_DES_PAD (MAUSB_ISO_SSP_EP_DES_SIZE - \
(USB_DT_EP_SIZE + USB_DT_SS_EP_COMP_SIZE + USB_DT_ISO_SSP_EP_COMP_SIZE))
/* Size of EPHandleResp Descriptor */
#define MAUSB_SIZE_MAUSB_EP_DES 16
/* Size of EPHandleResp Descriptor */
#define MAUSB_SIZE_EP_HANDLE 2
/* Dissects an individual Device Capability Descriptor */
static guint16 dissect_mausb_dev_cap_desc(proto_tree *tree, tvbuff_t *tvb,
packet_info *pinfo, gint16 offset)
{
guint8 desc_len;
guint8 cap_type;
gint16 desc_offset;
proto_item *len_field;
proto_tree *dev_cap_tree;
desc_offset = offset;
desc_len = tvb_get_guint8(tvb, desc_offset);
cap_type = tvb_get_guint8(tvb, desc_offset + 1);
dev_cap_tree = proto_tree_add_subtree(tree, tvb, desc_offset, desc_len,
ett_dev_cap, NULL,
val_to_str_const(cap_type, mausb_dev_cap_string, "Unknown Capability"));
len_field = proto_tree_add_item(dev_cap_tree, hf_mausb_dev_cap_len,
tvb, desc_offset, 1, ENC_LITTLE_ENDIAN);
desc_offset += 1;
proto_tree_add_item(dev_cap_tree, hf_mausb_dev_cap_type,
tvb, desc_offset, 1, ENC_LITTLE_ENDIAN);
desc_offset += 1;
if (desc_len > 2) {
/* TODO: dissect individual capabilities */
switch (cap_type) {
case SpeedCap:
case PmanCap:
case IsoCap:
case SyncCap:
case ContainerIDCap:
case LinkSleepCap:
default:
proto_tree_add_item(dev_cap_tree, hf_mausb_dev_cap_generic,
tvb, desc_offset, (desc_len - 2), ENC_NA);
desc_offset += (desc_len - 2);
break;
}
}
/* Was this descriptor a different length than expected */
if (desc_offset != offset + desc_len) {
expert_add_info(pinfo, len_field, &ei_dev_cap_len);
}
return offset + desc_len;
}
/* Dissects a MAUSB capability response packet
* also dissects Capability Descriptors
*/
static guint16 dissect_mausb_mgmt_pkt_cap_resp(struct mausb_header *header,
proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo, gint16 offset)
{
guint desc_len;
guint8 desc_count;
proto_item *len_field;
guint16 loop_offset;
int i;
/* Fields present in all CapResp packets */
proto_tree_add_item(tree, hf_mausb_cap_resp_num_ep,
tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_mausb_cap_resp_num_dev,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_mausb_cap_resp_num_stream,
tvb, offset, 1, ENC_LITTLE_ENDIAN); /* really 5 bits */
proto_tree_add_item(tree, hf_mausb_cap_resp_dev_type,
tvb, offset, 1, ENC_LITTLE_ENDIAN); /* really 3 bits */
offset += 1;
proto_tree_add_item(tree, hf_mausb_cap_resp_desc_count,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
desc_count = tvb_get_guint8(tvb, offset);
offset += 1;
len_field = proto_tree_add_item(tree, hf_mausb_cap_resp_desc_len,
tvb, offset, 3, ENC_LITTLE_ENDIAN);
desc_len = tvb_get_letoh24(tvb, offset);
offset += 3;
proto_tree_add_item(tree, hf_mausb_cap_resp_transfer_req,
tvb, offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_mausb_cap_resp_mgmt_req,
tvb, offset, 2, ENC_LITTLE_ENDIAN); /* really 12 bits */
proto_tree_add_item(tree, hf_mausb_cap_resp_rsvd,
tvb, offset, 2, ENC_LITTLE_ENDIAN); /* really 4 bits */
offset += 2;
/* Descriptors length longer than remainder of packet */
if (offset + desc_len > header->length) {
expert_add_info(pinfo, len_field, &ei_cap_resp_desc_len);
desc_len = header->length - offset; /* to avoid overflows */
}
loop_offset = offset;
/* dissect capability descriptors */
for (i = 0; i < desc_count; i++) {
loop_offset = dissect_mausb_dev_cap_desc(tree, tvb, pinfo, loop_offset);
}
/* were the descriptors a different length than expected */
if (loop_offset != offset + desc_len) {
expert_add_info(pinfo, len_field, &ei_dev_cap_resp_desc_len);
desc_len = header->length - offset; /* to avoid overflows */
}
return offset + desc_len;
}
/* Dissects a MAUSB endpoint handle */
static gint dissect_ep_handle(proto_tree *tree, tvbuff_t *tvb, gint offset)
{
proto_item *ti;
proto_tree *ep_handle_tree;
ti = proto_tree_add_item(tree, hf_mausb_ep_handle, tvb,
offset, MAUSB_SIZE_EP_HANDLE, ENC_LITTLE_ENDIAN);
ep_handle_tree = proto_item_add_subtree(ti, ett_mausb_ep_handle);
proto_tree_add_item(ep_handle_tree, hf_mausb_ep_handle_d, tvb,
offset, MAUSB_SIZE_EP_HANDLE, ENC_LITTLE_ENDIAN);
proto_tree_add_item(ep_handle_tree, hf_mausb_ep_handle_ep_num, tvb,
offset, MAUSB_SIZE_EP_HANDLE, ENC_LITTLE_ENDIAN);
proto_tree_add_item(ep_handle_tree, hf_mausb_ep_handle_dev_addr, tvb,
offset, MAUSB_SIZE_EP_HANDLE, ENC_LITTLE_ENDIAN);
proto_tree_add_item(ep_handle_tree, hf_mausb_ep_handle_bus_num, tvb,
offset, MAUSB_SIZE_EP_HANDLE, ENC_LITTLE_ENDIAN);
return MAUSB_SIZE_EP_HANDLE;
}
/* dissects presentation time & subfields */
static void dissect_mausb_present_time(proto_tree *tree, tvbuff_t *tvb,
gint offset)
{
proto_item *ti;
proto_tree *present_time_tree;
ti = proto_tree_add_item(tree, hf_mausb_present_time, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
present_time_tree = proto_item_add_subtree(ti, ett_mausb_present_time);
proto_tree_add_item(present_time_tree, hf_mausb_uframe, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(present_time_tree, hf_mausb_frame, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
}
static void dissect_mausb_timestamp(proto_tree *tree, tvbuff_t *tvb,
gint offset)
{
proto_item *ti;
proto_tree *timestamp_tree;
ti = proto_tree_add_item(tree, hf_mausb_timestamp, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
timestamp_tree = proto_item_add_subtree(ti, ett_mausb_timestamp);
proto_tree_add_item(timestamp_tree, hf_mausb_delta, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
proto_tree_add_item(timestamp_tree, hf_mausb_nom_interval, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
}
/* gets the size of the endpoint descriptors in a EPHandleReq packet */
static guint8 mausb_get_size_ep_des(tvbuff_t *tvb, gint offset)
{
guint8 size_ep_des = 0;
guint16 temp_buffer = 0; /* for storing the offset data */
/* grab the 2 bytes with the size field */
temp_buffer = tvb_get_letohs(tvb, offset);
/* mask & shift the size field */
temp_buffer = temp_buffer & MAUSB_MGMT_SIZE_EP_DES_MASK;
size_ep_des = (temp_buffer >> MAUSB_MGMT_SIZE_EP_DES_OFFSET);
return size_ep_des;
}
/* dissect an individual block for ClearTransfers */
static guint16 dissect_clear_transfers_block(proto_tree *tree,
tvbuff_t *tvb, gint16 offset, gboolean req)
{
proto_item *ti;
proto_tree *block_tree;
if (req) {
ti = proto_tree_add_item(tree, hf_mausb_clear_transfers_info_block,
tvb, offset, 8, ENC_NA);
} else {
ti = proto_tree_add_item(tree, hf_mausb_clear_transfers_status_block,
tvb, offset, 16, ENC_NA);
}
block_tree = proto_item_add_subtree(ti, ett_clear_transfers_block);
/* EP Handle */
offset += dissect_ep_handle(block_tree, tvb, offset);
/* Stream ID */
proto_tree_add_item(block_tree, hf_mausb_stream_id, tvb, offset, 2,
ENC_LITTLE_ENDIAN);
offset += 2;
if (req) {
/* Start Request ID */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_start_req_id,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Rsvd */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_req_block_rsvd,
tvb, offset, 3, ENC_NA);
offset += 3;
} else {
/* Cancel Status */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_status,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
/* Partial Delivery */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_partial,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
/* Rsvd */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_resp_block_rsvd,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
/* Last Request ID */
proto_tree_add_item(block_tree, hf_mausb_clear_transfers_last_req_id,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Delivered Sequence Number */
proto_tree_add_item(block_tree, hf_mausb_cancel_transfer_seq_num, tvb,
offset, 3, ENC_LITTLE_ENDIAN);
offset += 3;
/* Delivered Byte Offset */
proto_tree_add_item(block_tree, hf_mausb_cancel_transfer_byte_offset,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
return offset;
}
/* dissects portions of a MA USB packet specific to ClearTransfers packets */
static guint16 dissect_mausb_mgmt_pkt_clear_transfers(proto_tree *tree,
tvbuff_t *tvb, gint16 offset, gboolean req)
{
guint8 num_block;
int i;
num_block = tvb_get_guint8(tvb, offset);
if (req) {
/* Number of entries */
proto_tree_add_item(tree, hf_mausb_clear_transfers_req_num, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Rsvd */
proto_tree_add_item(tree, hf_mausb_clear_transfers_req_rsvd, tvb,
offset, 3, ENC_NA);
offset += 3;
} else {
num_block &= MAUSB_MGMT_CLEAR_TRANSFER_RESP_NUM_MASK;
/* Number of entries */
proto_tree_add_item(tree, hf_mausb_clear_transfers_resp_num, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
/* Rsvd */
proto_tree_add_item(tree, hf_mausb_clear_transfers_resp_rsvd, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 4;
}
for (i = 0; i < num_block; i++) {
offset = dissect_clear_transfers_block(tree, tvb, offset, req);
}
return offset;
}
/* dissects portions of a MA USB packet specific to Endpoint Handle Request packets */
static guint16 dissect_mausb_mgmt_pkt_ep_handle( proto_tree *tree, tvbuff_t *tvb,
packet_info *pinfo, gint16 start, gboolean req, gboolean del)
{
usb_conv_info_t usb_conv_info;
proto_item *size_field = NULL;
guint16 offset = start;
guint16 loop_offset;
guint8 num_ep;
guint8 size_ep_des;
int i;
memset(&usb_conv_info, 0, sizeof(usb_conv_info_t));
num_ep = tvb_get_guint8(tvb, offset) & MAUSB_MGMT_NUM_EP_DES_MASK;
if (!del) {
proto_tree_add_item(tree, hf_mausb_mgmt_ep_des_num, tvb,
offset, 1, ENC_LITTLE_ENDIAN); /* really 5 bits */
} else {
proto_tree_add_item(tree, hf_mausb_mgmt_ep_handle_num, tvb,
offset, 1, ENC_LITTLE_ENDIAN); /* really 5 bits */
}
if (req && !del) {
size_ep_des = mausb_get_size_ep_des(tvb, offset);
size_field = proto_tree_add_item(tree, hf_mausb_mgmt_ep_des_size, tvb,
offset, 2, ENC_LITTLE_ENDIAN); /* really 6 bits over a byte boundry */
offset += 1;
/* Padding to DWORD */
proto_tree_add_item(tree, hf_mausb_mgmt_ep_des_pad, tvb,
offset, 3, ENC_NA);
offset += 3;
} else if (!req && !del) {
size_ep_des = MAUSB_SIZE_MAUSB_EP_DES;
proto_tree_add_item(tree, hf_mausb_mgmt_ep_handle_pad, tvb,
offset, 4, ENC_NA); /* really 5 bits */
/* Padding to DWORD */
offset += 4;
} else { /* If it is an EPHandleDelete Req or Resp */
size_ep_des = MAUSB_SIZE_EP_HANDLE;
/* Padding to DWORD */
proto_tree_add_item(tree, hf_mausb_mgmt_ep_handle_pad, tvb,
offset, 4, ENC_NA);
offset += 4; /* Padding to DWORD */
}
/* For every entry */
for (i = 0; i < num_ep; ++i) {
loop_offset = offset;
/* If it is an EPHandleDelete Req or Resp */
if (del) {
loop_offset += dissect_ep_handle(tree, tvb, loop_offset);
} else if (req) {
/* Standard USB Endpoint Descriptor */
dissect_usb_endpoint_descriptor(pinfo, tree, tvb, loop_offset,
&usb_conv_info);
loop_offset += USB_DT_EP_SIZE;
/* If there are more descriptors to read */
if (MAUSB_EP_DES_SIZE < size_ep_des) {
/* TODO: Dissector for SS EP Companion Descriptors */
dissect_usb_unknown_descriptor(pinfo, tree,
tvb, loop_offset, &usb_conv_info);
loop_offset += USB_DT_SS_EP_COMP_SIZE;
if (MAUSB_SS_EP_DES_SIZE < size_ep_des) {
/* TODO: Dissector for SSP ISO EP Companion Descriptors */
loop_offset += dissect_usb_unknown_descriptor(pinfo, tree,
tvb, loop_offset, &usb_conv_info);
/* Pad to a DWORD */
proto_tree_add_item(tree, hf_mausb_ep_handle_req_pad, tvb,
loop_offset, MAUSB_ISO_SSP_EP_DES_PAD, ENC_NA);
loop_offset += MAUSB_ISO_SSP_EP_DES_PAD;
} else {
/* Pad to a DWORD */
proto_tree_add_item(tree, hf_mausb_ep_handle_req_pad, tvb,
loop_offset, MAUSB_SS_EP_DES_PAD, ENC_NA);
loop_offset += MAUSB_SS_EP_DES_PAD;
}
} else {
/* Pad to a DWORD */
proto_tree_add_item(tree, hf_mausb_ep_handle_req_pad, tvb,
loop_offset, MAUSB_EP_DES_PAD, ENC_NA);
loop_offset += MAUSB_EP_DES_PAD;
}
} else { /* IE: it's a EPHandleResp */
/* EP Handle */
loop_offset += dissect_ep_handle(tree, tvb, loop_offset);
/* direction */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_dir, tvb,
loop_offset, 1, ENC_LITTLE_ENDIAN);
/* isochronous */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_iso, tvb,
loop_offset, 1, ENC_LITTLE_ENDIAN);
/* L-managed transfers */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_lman, tvb,
loop_offset, 1, ENC_LITTLE_ENDIAN);
/* valid handle bit */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_valid, tvb,
loop_offset, 1, ENC_LITTLE_ENDIAN);
loop_offset += 2; /* 4 bit flags + 12 reserved bits */
/* credit consumption unit */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_ccu, tvb,
loop_offset, 2, ENC_LITTLE_ENDIAN);
loop_offset += 2;
loop_offset += 2; /* 2 bytes reserved */
/* buffer size (in bytes) */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_buf_size, tvb,
loop_offset, 4, ENC_LITTLE_ENDIAN);
loop_offset += 4;
/* max iso programming delay (in uSec) */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_iso_prog_dly, tvb,
loop_offset, 2, ENC_LITTLE_ENDIAN);
loop_offset += 2;
/* max iso response delay (in uSec) */
proto_tree_add_item(tree, hf_mausb_ep_handle_resp_iso_resp_dly, tvb,
loop_offset, 2, ENC_LITTLE_ENDIAN);
loop_offset += 2;
}
offset += size_ep_des;
if (req && !del && loop_offset != offset){
expert_add_info(pinfo, size_field, &ei_ep_handle_len);
}
}
return offset;
}
/* dissects portions of a MA USB packet specific to CancelTransfer packets */
static guint16 dissect_mausb_mgmt_pkt_cancel_transfer( proto_tree *tree,
tvbuff_t *tvb, gint offset, gboolean req)
{
guint8 status;
offset += dissect_ep_handle(tree, tvb, offset);
proto_tree_add_item(tree, hf_mausb_stream_id, tvb, offset, 2,
ENC_LITTLE_ENDIAN);
offset += 2;
proto_tree_add_item(tree, hf_mausb_req_id, tvb, offset, 1,
ENC_LITTLE_ENDIAN);
offset += 1;
if (req) {
proto_tree_add_item(tree, hf_mausb_cancel_transfer_rsvd, tvb, offset, 3,
ENC_NA);
offset += 3;
return offset;
} /* else resp */
status = tvb_get_guint8(tvb, offset) |
MAUSB_CANCEL_TRANSFER_STATUS_MASK;
proto_tree_add_item(tree, hf_mausb_cancel_transfer_status, tvb, offset, 3,
ENC_LITTLE_ENDIAN);
proto_tree_add_item(tree, hf_mausb_cancel_transfer_rsvd_2, tvb, offset, 3,
ENC_LITTLE_ENDIAN);
/* Reserved */
offset += 3;
/* if some data was moved */
if (2 == status) {
/* TODO: sequence number reserved for INs */
proto_tree_add_item(tree, hf_mausb_cancel_transfer_seq_num, tvb, offset,
3, ENC_LITTLE_ENDIAN);
offset += 3;
proto_tree_add_item(tree, hf_mausb_cancel_transfer_rsvd, tvb, offset, 1,
ENC_NA);
offset += 1;
proto_tree_add_item(tree, hf_mausb_cancel_transfer_byte_offset, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
} else {
proto_tree_add_item(tree, hf_mausb_cancel_transfer_rsvd, tvb, offset, 8,
ENC_NA);
offset += 8;
}
return offset;
}
/* dissects portions of a MA USB packet specific to particular management packets */
static guint16 dissect_mausb_mgmt_pkt_flds(struct mausb_header *header,
proto_tree *tree, tvbuff_t *tvb,
packet_info *pinfo, gint16 start)
{
proto_item *ti;
proto_tree *mgmt_tree;
guint16 offset = start;
gint type_spec_len = tvb_reported_length(tvb) - start;
if (0 > type_spec_len) {
expert_add_info(pinfo, tree, &ei_mgmt_type_spec_len_short);
return offset;
}
ti = proto_tree_add_item(tree, hf_mausb_mgmt_type_spec, tvb,
offset, type_spec_len, ENC_NA);
mgmt_tree = proto_item_add_subtree(ti, ett_mgmt);
switch (header->type) {
/* subtypes with variable length additional data */
case CapResp:
offset = dissect_mausb_mgmt_pkt_cap_resp(header, mgmt_tree, tvb, pinfo, offset);
break;
case EPHandleReq:
offset = dissect_mausb_mgmt_pkt_ep_handle(mgmt_tree, tvb, pinfo,
offset, TRUE, FALSE);
break;
case EPHandleResp:
offset = dissect_mausb_mgmt_pkt_ep_handle(mgmt_tree, tvb, pinfo,
offset, FALSE, FALSE);
break;
/* TODO: Dissect type-specific management packet fields */
case EPActivateReq:
case EPActivateResp:
case EPInactivateReq:
case EPInactivateResp:
case EPResetReq:
case EPResetResp:
proto_tree_add_item(mgmt_tree, hf_mausb_mgmt_type_spec_generic,
tvb, offset, type_spec_len, ENC_NA);
offset += type_spec_len;
break;
case ClearTransfersReq:
offset = dissect_mausb_mgmt_pkt_clear_transfers(mgmt_tree, tvb, offset, TRUE);
break;
case ClearTransfersResp:
offset = dissect_mausb_mgmt_pkt_clear_transfers(mgmt_tree, tvb, offset, FALSE);
break;
case EPHandleDeleteReq:
offset = dissect_mausb_mgmt_pkt_ep_handle(mgmt_tree, tvb, pinfo,
offset, TRUE, TRUE);
break;
case EPHandleDeleteResp:
offset = dissect_mausb_mgmt_pkt_ep_handle(mgmt_tree, tvb, pinfo,
offset, FALSE, TRUE);
break;
case ModifyEP0Resp:
case EPCloseStreamResp:
case USBDevResetReq:
case USBDevResetResp:
case EPOpenStreamResp:
case VendorSpecificReq:
case VendorSpecificResp:
/* FALLTHROUGH */
/* subtypes with constant length additional data */
case CapReq:
case USBDevHandleReq:
case USBDevHandleResp:
case ModifyEP0Req:
case SetUSBDevAddrReq:
case SetUSBDevAddrResp:
case UpdateDevReq:
case SynchReq:
case EPCloseStreamReq:
proto_tree_add_item(mgmt_tree, hf_mausb_mgmt_type_spec_generic,
tvb, offset, type_spec_len, ENC_NA);
offset += type_spec_len;
break;
case CancelTransferReq:
offset = dissect_mausb_mgmt_pkt_cancel_transfer(mgmt_tree, tvb, offset,
TRUE);
break;
case CancelTransferResp:
offset = dissect_mausb_mgmt_pkt_cancel_transfer(mgmt_tree, tvb, offset,
FALSE);
break;
case EPOpenStreamReq:
proto_tree_add_item(mgmt_tree, hf_mausb_mgmt_type_spec_generic,
tvb, offset, type_spec_len, ENC_NA);
offset += type_spec_len;
break;
/* Managment packets with no additional data */
case DevResetReq:
case DevResetResp:
case UpdateDevResp:
case USBDevDisconnectReq:
case USBDevDisconnectResp:
case SleepReq:
case SleepResp:
case WakeReq:
case WakeResp:
case PingReq:
case PingResp:
case DevDisconnectReq:
case DevDisconnectResp:
case DevInitDisconnectReq:
case DevInitDisconnectResp:
case SynchResp:
break;
default:
expert_add_info(pinfo, mgmt_tree, &ei_mgmt_type_undef);
break;
}
if (offset < tvb_reported_length(tvb)) {
expert_add_info(pinfo, mgmt_tree, &ei_mgmt_type_spec_len_long);
}
return offset;
}
static conversation_t
*get_mausb_conversation(proto_tree *tree, tvbuff_t *tvb, packet_info *pinfo,
guint16 handle, gboolean is_data, gboolean req)
{
conversation_t *conversation = NULL;
guint16 device_address;
guint16 bus_num;
int endpoint;
/* Treat data packets the same as URBs */
if (is_data) {
device_address = mausb_ep_handle_dev_addr(handle);
endpoint = mausb_ep_handle_ep_num(handle);
bus_num = mausb_ep_handle_bus_num(handle);
usb_set_addr(tree, tvb, pinfo, bus_num, device_address, endpoint, req);
conversation = get_usb_conversation(pinfo, &pinfo->src, &pinfo->dst,
pinfo->srcport, pinfo->destport);
}
/* TODO: track control & management packet conversations */
return conversation;
}
/* Used to detect multiple MA Packets in a single TCP packet */
/* Not used for MA Packets in SNAP Packets */
static gint mausb_num_pdus = 0;
/* Code to actually dissect the packets */
static int
dissect_mausb_pkt(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
void *data _U_)
{
/* Set up structures needed to add the protocol subtree and manage it */
proto_item *ti;
proto_item *len_field;
proto_tree *mausb_tree;
proto_tree *flags_tree;
proto_tree *tflags_tree;
proto_tree *iflags_tree;
/* Other misc. local variables. */
struct mausb_header header;
gint offset = 0;
gint payload_len;
/* Variables needed to follow the conversation */
usb_conv_info_t *usb_conv_info = NULL;
usb_trans_info_t *usb_trans_info = NULL;
conversation_t *conversation;
memset(&header, 0, sizeof(struct mausb_header));
/* Set the Protocol column to the constant string of mausb */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "MAUSB");
mausb_num_pdus++;
col_add_str(pinfo->cinfo, COL_INFO, "[");
col_set_fence(pinfo->cinfo, COL_INFO);
/*** PROTOCOL TREE ***/
/* create display subtree for the protocol */
ti = proto_tree_add_item(tree, proto_mausb, tvb, 0,
mausb_get_pkt_len(pinfo, tvb, offset, NULL), ENC_NA);
mausb_tree = proto_item_add_subtree(ti, ett_mausb);
/* Add an item to the subtree, see section 1.5 of README.dissector for more
* information. */
/* MAUSB Protocol Version */
header.ver_flags = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_version, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
/* Flags */
ti = proto_tree_add_item(mausb_tree, hf_mausb_flags, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
flags_tree = proto_item_add_subtree(ti, ett_mausb_flags);
proto_tree_add_item(flags_tree, hf_mausb_flag_host, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flags_tree, hf_mausb_flag_retry, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flags_tree, hf_mausb_flag_timestamp, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(flags_tree, hf_mausb_flag_reserved, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Packet Type */
header.type = tvb_get_guint8(tvb, offset);
col_append_str(pinfo->cinfo, COL_INFO, val_to_str(header.type, mausb_type_string, "%d"));
proto_tree_add_item(mausb_tree, hf_mausb_type, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Packet Length */
header.length = tvb_get_letohs(tvb, offset);
col_append_fstr(pinfo->cinfo, COL_INFO, " Length=%u", header.length);
len_field = proto_tree_add_item(mausb_tree, hf_mausb_length, tvb,
offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
/* Check to see if length field is valid */
if (tvb_reported_length(tvb) != header.length) {
expert_add_info(pinfo, len_field, &ei_len);
}
/* Is the next field a device handle or an endpoint handle */
header.handle = tvb_get_letohs(tvb, offset);
/* Once we have the endpoint/device handle,
* we can find the right conversation */
conversation = get_mausb_conversation(mausb_tree, tvb, pinfo, header.handle,
mausb_is_data_pkt(&header),
mausb_is_from_host(&header));
if (mausb_is_mgmt_pkt(&header)) {
proto_tree_add_item(mausb_tree, hf_mausb_dev_handle, tvb,
offset, 2, ENC_LITTLE_ENDIAN);
offset += 2;
} else {
offset += dissect_ep_handle(mausb_tree, tvb, offset);
}
/* MA Device Address */
header.ma_dev_addr = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_ma_dev_addr, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* SSID */
header.mass_id = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_ssid, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
/* Status */
header.status = tvb_get_guint8(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_status, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
if (mausb_is_mgmt_pkt(&header)) {
/* Dialog Token */
header.u.token = tvb_get_letohs(tvb, 9) & MAUSB_TOKEN_MASK;
col_append_fstr(pinfo->cinfo, COL_INFO, " Token=%u", header.u.token);
proto_tree_add_item(mausb_tree, hf_mausb_token, tvb,
offset, 2, ENC_LITTLE_ENDIAN); /* Really 10 bits */
offset += 1; /* token */
/* Padding to a DWORD */
proto_tree_add_item(mausb_tree, hf_mausb_mgmt_pad, tvb,
offset, 2, ENC_LITTLE_ENDIAN); /* Really 14 bits */
offset += 2; /* DWORD*/
/* Dissect additional management fields (when applicable) */
if (offset < header.length) {
offset = dissect_mausb_mgmt_pkt_flds(&header, mausb_tree, tvb,
pinfo, offset);
}
}
else if (mausb_is_data_pkt(&header)) {
/* EPS */
header.u.s.eps_tflags = tvb_get_guint8(tvb, offset);
if (mausb_is_from_host(&header)) {
proto_tree_add_item(mausb_tree, hf_mausb_eps_rsvd, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
} else {
proto_tree_add_item(mausb_tree, hf_mausb_eps, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
}
/* T-Flags */
ti = proto_tree_add_item(mausb_tree, hf_mausb_tflags, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
tflags_tree = proto_item_add_subtree(ti, ett_mausb_tflags);
proto_tree_add_item(tflags_tree, hf_mausb_tflag_arq, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tflags_tree, hf_mausb_tflag_neg, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tflags_tree, hf_mausb_tflag_eot, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tflags_tree, hf_mausb_tflag_type, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(tflags_tree, hf_mausb_tflag_rsvd, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
if (mausb_is_iso_pkt(&header)) {
/* Number of Headers */
header.u.s.u1.num_headers_iflags = tvb_get_letohs(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_num_iso_hdr, tvb,
offset, 2, ENC_LITTLE_ENDIAN);
/* I-Flags */
ti = proto_tree_add_item(mausb_tree, hf_mausb_iflags, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
iflags_tree = proto_item_add_subtree(ti, ett_mausb_iflags);
proto_tree_add_item(iflags_tree, hf_mausb_iflag_asap, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(iflags_tree, hf_mausb_iflag_hdr_format, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
proto_tree_add_item(iflags_tree, hf_mausb_iflag_mtd, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
} else {
/* Stream ID */
header.u.s.u1.stream_id = tvb_get_letohs(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_stream_id, tvb,
offset, 2, ENC_LITTLE_ENDIAN);
}
offset += 2;
/* Sequence Number */
header.u.s.seq_num = tvb_get_letoh24(tvb, offset);
col_append_fstr(pinfo->cinfo, COL_INFO, " SeqNum=%u", header.u.s.seq_num);
proto_tree_add_item(mausb_tree, hf_mausb_seq_num, tvb,
offset, 3, ENC_LITTLE_ENDIAN);
offset += 3;
/* Request ID */
header.u.s.req_id = tvb_get_guint8(tvb, offset);
col_append_fstr(pinfo->cinfo, COL_INFO, " ReqID=%u", header.u.s.req_id);
proto_tree_add_item(mausb_tree, hf_mausb_req_id, tvb,
offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
if (mausb_is_iso_pkt(&header)) {
/* Presentation Time */
header.u.s.u2.present_time_num_seg = tvb_get_letohl(tvb, offset);
dissect_mausb_present_time(mausb_tree, tvb, offset);
/* Number of Segments */
proto_tree_add_item(mausb_tree, hf_mausb_num_segs, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
/* MA USB Timestamp */
if (mausb_has_timestamp(&header)) {
header.u.s.timestamp = tvb_get_letohl(tvb, offset);
dissect_mausb_timestamp(mausb_tree, tvb, offset);
offset += 4;
}
/* Media Time/Transmission Delay */
if (mausb_has_mtd(&header)) {
header.u.s.tx_dly = tvb_get_letohl(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_mtd, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
/* Not Iso */
} else {
/* Remaining Size/Credit */
header.u.s.u2.credit = tvb_get_letohl(tvb, offset);
proto_tree_add_item(mausb_tree, hf_mausb_rem_size_credit, tvb,
offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
}
/* If there is a usb conversation, find it */
if (!(mausb_is_transfer_ack(&header))) {
usb_conv_info = get_usb_conv_info(conversation);
/* TODO: set all the usb_conv_info values */
usb_conv_info->is_request = mausb_is_transfer_req(&header);
usb_trans_info = usb_get_trans_info(tvb, pinfo, tree, USB_HEADER_MAUSB,
usb_conv_info, header.u.s.req_id);
usb_conv_info->usb_trans_info = usb_trans_info;
}
/* If this packet contains USB Setup Data */
if (mausb_has_setup_data(&header)) {
offset = dissect_usb_setup_request(pinfo, mausb_tree, tvb, offset,
URB_SUBMIT, usb_conv_info,
USB_HEADER_MAUSB);
}
if (mausb_is_setup_response(&header)) {
offset = dissect_usb_setup_response(pinfo, mausb_tree, tvb, offset,
URB_COMPLETE, usb_conv_info);
}
/*
* TODO: dissect MA USB Payload with USB class dissectors
* (ex: MBIM, USB Audio, etc.)
*/
/* Everything after the header is payload */
payload_len = header.length - offset;
if (0 < payload_len) {
proto_tree_add_item(mausb_tree, hf_mausb_payload, tvb,
offset, payload_len, ENC_NA);
offset += payload_len;
}
}
col_append_str(pinfo->cinfo, COL_INFO, "]");
col_set_fence(pinfo->cinfo, COL_INFO);
return offset;
}
/* Code to dissect the stream */
static int
dissect_mausb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
mausb_num_pdus = 0;
tcp_dissect_pdus(tvb, pinfo, tree, TRUE, MAUSB_MIN_LENGTH,
mausb_get_pkt_len, dissect_mausb_pkt, data);
if (1 < mausb_num_pdus) {
col_clear_fence(pinfo->cinfo, COL_INFO);
col_prepend_fstr(pinfo->cinfo, COL_INFO, "[%i packets] ", mausb_num_pdus);
}
return tvb_reported_length(tvb);
}
/* Register the protocol with Wireshark.
*/
void
proto_register_mausb(void)
{
static hf_register_info hf[] = {
{ &hf_mausb_version,
{ "Version", "mausb.version", FT_UINT8, BASE_DEC,
VALS(mausb_version_string), MAUSB_VERSION_MASK, NULL, HFILL
}
},
{ &hf_mausb_flags,
{ "Flags", "mausb.flags", FT_UINT8, BASE_HEX,
VALS(mausb_flag_string), MAUSB_FLAG_MASK, NULL, HFILL
}
},
/* Flag Subfields */
{ &hf_mausb_flag_host,
{ "Host", "mausb.flags.host", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), (MAUSB_FLAG_HOST << MAUSB_FLAG_OFFSET),
NULL, HFILL
}
},
{ &hf_mausb_flag_retry,
{ "Retry", "mausb.flags.retry", FT_BOOLEAN, 8,
TFS(&tfs_yes_no), (MAUSB_FLAG_RETRY << MAUSB_FLAG_OFFSET),
NULL, HFILL
}
},
{ &hf_mausb_flag_timestamp,
{ "Timestamp", "mausb.flags.timestamp", FT_BOOLEAN, 8,
TFS(&tfs_present_not_present),
(MAUSB_FLAG_TIMESTAMP << MAUSB_FLAG_OFFSET),
NULL, HFILL
}
},
{ &hf_mausb_flag_reserved,
{ "Reserved", "mausb.flags.reserved", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), (MAUSB_FLAG_RESERVED << MAUSB_FLAG_OFFSET),
NULL, HFILL
}
},
{ &hf_mausb_type,
{ "Type", "mausb.type", FT_UINT8, BASE_HEX,
VALS(mausb_type_string), 0, NULL, HFILL
}
},
{ &hf_mausb_length,
{ "Length", "mausb.length", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_dev_handle,
{ "Device Handle", "mausb.dev_handle", FT_UINT16, BASE_HEX,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ep_handle,
{ "Endpoint Handle", "mausb.ep_handle", FT_UINT16, BASE_HEX,
NULL, 0, NULL, HFILL
}
},
/* EP Handle Subfields */
{ &hf_mausb_ep_handle_d,
{ "Direction", "mausb.ep_handle.d", FT_BOOLEAN, 16,
TFS(&tfs_endpoint_direction), MAUSB_EP_HANDLE_D, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_ep_num,
{ "Endpoint Number", "mausb.ep_handle.ep_num", FT_UINT16, BASE_DEC,
NULL, MAUSB_EP_HANDLE_EP_NUM, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_dev_addr,
{ "USB Device Address", "mausb.ep_handle.dev_addr", FT_UINT16, BASE_DEC,
NULL, MAUSB_EP_HANDLE_DEV_ADDR, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_bus_num,
{ "USB Bus Number", "mausb.ep_handle.bus_num", FT_UINT16, BASE_DEC,
NULL, MAUSB_EP_HANDLE_BUS_NUM, NULL, HFILL
}
},
{ &hf_mausb_ma_dev_addr,
{ "MA Device Address", "mausb.ma_dev_addr", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ssid,
{ "Service Set ID", "mausb.ssid", FT_UINT8, BASE_HEX,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_status,
{ "Status", "mausb.status", FT_UINT8, BASE_DEC,
VALS(mausb_status_string), 0, NULL, HFILL
}
},
/* Managment Packets Only */
{ &hf_mausb_token,
{ "Token", "mausb.token", FT_UINT16, BASE_DEC,
NULL, MAUSB_TOKEN_MASK, NULL, HFILL
}
},
{ &hf_mausb_mgmt_pad,
{ "Padding to a DWORD", "mausb.mgmt_pad",
FT_UINT16, BASE_HEX, NULL, MAUSB_MGMT_PAD_MASK,
NULL, HFILL
}
},
{ &hf_mausb_mgmt_type_spec,
{ "Type-specific management packet fields", "mausb.mgmt_flds",
FT_NONE, 0, NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_mgmt_type_spec_generic,
{ "Type-specific management packet fields", "mausb.mgmt_flds.generic",
FT_NONE, 0, NULL, 0, NULL, HFILL
}
},
/* Data Packets Only */
{ &hf_mausb_eps,
{ "EP Status", "mausb.eps", FT_UINT8, BASE_HEX,
VALS(mausb_eps_string), MAUSB_EPS_MASK, NULL, HFILL
}
},
{ &hf_mausb_eps_rsvd,
{ "EP Status", "mausb.eps.reserved", FT_UINT8, BASE_HEX,
NULL, MAUSB_EPS_MASK, NULL, HFILL
}
},
{ &hf_mausb_tflags,
{ "Transfer Flags", "mausb.tflag", FT_UINT8, BASE_HEX,
VALS(mausb_tflag_string), MAUSB_TFLAG_MASK, NULL, HFILL
}
},
/* T-Flag Subfields */
{ &hf_mausb_tflag_arq,
{ "ARQ", "mausb.tflag.arq", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_TFLAG_ARQ << MAUSB_TFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_tflag_neg,
{ "NEG", "mausb.tflag.neg", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_TFLAG_NEG << MAUSB_TFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_tflag_eot,
{ "EoT", "mausb.tflag.eot", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_TFLAG_EOT << MAUSB_TFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_tflag_type,
{ "Transfer Type", "mausb.tflag.type", FT_UINT8, BASE_HEX,
VALS(mausb_transfer_type_string),
MAUSB_TFLAG_TRANSFER_TYPE << MAUSB_TFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_tflag_rsvd,
{ "Reserved", "mausb.tflag.rsvd", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_TFLAG_RSVD << MAUSB_TFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_num_iso_hdr,
{ "Number of Iso Headers", "mausb.numisohdr", FT_UINT16, BASE_DEC,
NULL, MAUSB_NUM_ISO_HDR_MASK, NULL, HFILL
}
},
{ &hf_mausb_iflags,
{ "Isochronous Flags", "mausb.iflag", FT_UINT16, BASE_HEX,
VALS(mausb_iflag_string), MAUSB_IFLAG_MASK, NULL, HFILL
}
},
/* I-Flag Subfields */
{ &hf_mausb_iflag_mtd,
{ "MTD Valid", "mausb.iflag.mtd", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_IFLAG_MTD << MAUSB_IFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_iflag_hdr_format,
{ "Isochronous Header Format", "mausb.iflag.ihf", FT_UINT8, BASE_HEX,
NULL, MAUSB_IFLAG_HDR_FORMAT << MAUSB_IFLAG_OFFSET, NULL, HFILL
}
},
{ &hf_mausb_iflag_asap,
{ "ASAP", "mausb.iflag.asap", FT_BOOLEAN, 8,
TFS(&tfs_set_notset), MAUSB_IFLAG_ASAP << MAUSB_IFLAG_OFFSET,
NULL, HFILL
}
},
{ &hf_mausb_stream_id,
{ "Stream ID", "mausb.streamid", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_seq_num,
{ "Sequence Number", "mausb.seqnum", FT_UINT24, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_req_id,
{ "Request ID", "mausb.reqid", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_present_time,
{ "Presentation Time", "mausb.presenttime", FT_UINT32, BASE_DEC,
NULL, MAUSB_PRESENT_TIME_MASK, NULL, HFILL
}
},
{ &hf_mausb_uframe,
{ "Microframe Number", "mausb.uframe", FT_UINT32, BASE_DEC,
NULL, MAUSB_UFRAME_MASK, NULL, HFILL
}
},
{ &hf_mausb_frame,
{ "Frame Number", "mausb.frame", FT_UINT32, BASE_DEC,
NULL, MAUSB_FRAME_MASK, NULL, HFILL
}
},
{ &hf_mausb_num_segs,
{ "Number of Segments", "mausb.numseg", FT_UINT32, BASE_DEC,
NULL, MAUSB_NUM_SEGS_MASK, NULL, HFILL
}
},
{ &hf_mausb_timestamp,
{ "Timestamp", "mausb.timestamp", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_delta,
{ "Delta", "mausb.delta", FT_UINT32, BASE_DEC,
NULL, MAUSB_DELTA_MASK, NULL, HFILL
}
},
{ &hf_mausb_nom_interval,
{ "Nominal Bus Interval", "mausb.nomitvl", FT_UINT32, BASE_DEC,
NULL, MAUSB_INTERVAL_MASK, NULL, HFILL
}
},
{ &hf_mausb_mtd,
{ "Media Time/Transmission Delay", "mausb.mtd", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_rem_size_credit,
{ "Remaining Size/Credit", "mausb.remsize_credit", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_payload,
{ "USB Data Payload", "mausb.payload", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
}
};
/* Register info for CapReq/Resp specific fields */
static hf_register_info hf_cap[] = {
{ &hf_mausb_cap_resp_num_ep,
{ "Number of Endpoints", "mausb.cap_resp.num_ep",
FT_UINT8, BASE_DEC, NULL, 0,
"the maximum number of endpoints for this device",
HFILL
}
},
{ &hf_mausb_cap_resp_num_dev,
{ "Number of Devices", "mausb.cap_resp.num_dev",
FT_UINT8, BASE_DEC, NULL, 0,
"the maximum number of USB devices the MA USB device can manage",
HFILL
}
},
{ &hf_mausb_cap_resp_num_stream,
{ "Number of Streams", "mausb.cap_resp.num_stream",
FT_UINT8, BASE_DEC, NULL, MAUSB_CAP_RESP_NUM_STREAM_MASK,
"2 to the power of this value is the max number of streams supported",
/* TODO: have dissector print the actual number of streams supported */
HFILL
}
},
{ &hf_mausb_cap_resp_dev_type,
{ "Device Type", "mausb.cap_resp.dev_type", FT_UINT8, BASE_HEX,
VALS(mausb_cap_resp_dev_type), MAUSB_CAP_RESP_DEV_TYPE_MASK,
NULL, HFILL
}
},
{ &hf_mausb_cap_resp_desc_count,
{ "Descriptors Count", "mausb.cap_resp.desc_count",
FT_UINT8, BASE_DEC,
NULL, 0, "The total number of MA Device Capabilities descriptors",
HFILL
}
},
{ &hf_mausb_cap_resp_desc_len,
{ "Descriptors Length", "mausb.cap_resp.desc_len",
FT_UINT24, BASE_DEC,
NULL, 0, "The total size of MA Device Capabilities descriptors",
HFILL
}
},
{ &hf_mausb_cap_resp_transfer_req,
{ "Number of Outstanding Transfer Requests",
"mausb.cap_resp.transfer_req",
FT_UINT16, BASE_DEC, NULL, 0,
"The maximum number of total outstanding transfer requests", HFILL
}
},
{ &hf_mausb_cap_resp_mgmt_req,
{ "Number of Outstanding Management Requests", "mausb.cap_resp.mgmt_req",
FT_UINT16, BASE_DEC, NULL,
MAUSB_CAP_RESP_MGMT_REQ_MASK,
"The maximum number of host initiated outstanding management requests",
HFILL
}
},
{ &hf_mausb_cap_resp_rsvd,
{ "Reserved", "mausb.cap_resp.rsvd", FT_UINT16, BASE_HEX,
NULL, MAUSB_CAP_RESP_RSVD_MASK, NULL, HFILL
}
},
/* Device Capability Descriptors */
{ &hf_mausb_dev_cap_len,
{ "Length", "mausb.cap_resp.dev_cap.length",
FT_UINT8, BASE_DEC, NULL,
0, NULL, HFILL
}
},
{ &hf_mausb_dev_cap_type,
{ "Type", "mausb.cap_resp.dev_cap.type",
FT_UINT8, BASE_DEC, VALS(mausb_dev_cap_string),
0, NULL, HFILL
}
},
{ &hf_mausb_dev_cap_generic,
{ "Type-specific device capability descriptor fields",
"mausb.cap_resp.dev_cap.generic",
FT_NONE, 0, NULL, 0, NULL, HFILL
}
}
};
/* register info for ep_handle_* specific fields */
static hf_register_info hf_ep_handle[] = {
{ &hf_mausb_mgmt_ep_handle_num,
{ "Number of Endpoint Handles", "mausb.ep_handle_num",
FT_UINT8, BASE_DEC,
NULL, MAUSB_MGMT_NUM_EP_DES_MASK, NULL, HFILL
}
},
{ &hf_mausb_mgmt_ep_handle_pad,
{ "Padding to a DWORD", "mausb.ep_handle_pad",
FT_NONE, 0,
NULL, 0x0, NULL, HFILL
}
},
{ &hf_mausb_mgmt_ep_des_num,
{ "Number of Endpoint Descriptors", "mausb.ep_des_num",
FT_UINT8, BASE_DEC,
NULL, MAUSB_MGMT_NUM_EP_DES_MASK, NULL, HFILL
}
},
{ &hf_mausb_mgmt_ep_des_size,
{ "Size of Endpoint Descriptors", "mausb.ep_des_size",
FT_UINT16, BASE_DEC,
NULL, MAUSB_MGMT_SIZE_EP_DES_MASK, NULL, HFILL
}
},
{ &hf_mausb_mgmt_ep_des_pad,
{ "Padding to a DWORD", "mausb.ep_des_pad",
FT_NONE, 0, NULL,
0x0,
NULL, HFILL
}
},
{ &hf_mausb_ep_handle_req_pad,
{ "Padding to a DWORD", "mausb.ep_handle_req.pad",
FT_NONE, 0, NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_dir,
{ "Direction", "mausb.ep_dir", FT_BOOLEAN, 6,
TFS(&tfs_ep_handle_resp_dir), MAUSB_EP_HANDLE_RESP_DIR_MASK,
NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_iso,
{ "Isochronous", "mausb.ep_iso", FT_BOOLEAN, 6,
TFS(&tfs_yes_no), MAUSB_EP_HANDLE_RESP_ISO_MASK, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_lman,
{ "L-Managed", "mausb.ep_lman", FT_BOOLEAN, 6,
TFS(&tfs_supported_not_supported), MAUSB_EP_HANDLE_RESP_LMAN_MASK,
NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_valid,
{ "Valid", "mausb.ep_valid", FT_BOOLEAN, 6,
TFS(&tfs_invalid_valid), MAUSB_EP_HANDLE_RESP_VALID_MASK,
NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_ccu,
{ "CCU", "mausb.ep_ccu", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_buf_size,
{ "Buffer Size", "mausb.ep_buf_size", FT_UINT32, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_iso_prog_dly,
{ "Iso Programming Delay", "mausb.ep_iso_prog_dly", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_ep_handle_resp_iso_resp_dly,
{ "Iso Response Delay", "mausb.ep_iso_resp_dly", FT_UINT16, BASE_DEC,
NULL, 0, NULL, HFILL
}
}
};
/* (Cancel/Clear)Transfer(Req/Resp) specific fields */
static hf_register_info hf_cancel_transfer[] = {
{ &hf_mausb_clear_transfers_info_block,
{ "Clear Transfers Information Block", "mausb.clear_transfers.info", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_status_block,
{ "Cancel Transfers Status Block", "mausb.clear_transfers.status", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_cancel_transfer_rsvd,
{ "Reserved", "mausb.cancel_transfer.rsvd", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_req_num,
{ "Number of Blocks", "mausb.clear_transfers_req.num", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_req_rsvd,
{ "Reserved", "mausb.clear_transfers_req.rsvd", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_resp_num,
{ "Number of Blocks", "mausb.clear_transfers_resp.num", FT_UINT32, BASE_DEC,
NULL, MAUSB_CLEAR_TRANSFERS_RESP_NUM_MASK , NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_resp_rsvd,
{ "Reserved", "mausb.clear_transfers_resp.rsvd", FT_UINT32, BASE_HEX,
NULL, ~MAUSB_CLEAR_TRANSFERS_RESP_NUM_MASK, NULL, HFILL
}
},
{ &hf_mausb_cancel_transfer_status,
{ "Status", "mausb.cancel_transfer.status", FT_UINT24, BASE_HEX,
VALS(mausb_cancel_transfer_status_string),
MAUSB_CANCEL_TRANSFER_STATUS_MASK, NULL, HFILL
}
},
{ &hf_mausb_cancel_transfer_rsvd_2,
{ "Reserved", "mausb.cancel_transfer.rsvd_2", FT_UINT24, BASE_HEX,
NULL, ~MAUSB_CANCEL_TRANSFER_STATUS_MASK, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_status,
{ "Cancellation Status", "mausb.clear_transfers.status", FT_BOOLEAN, 6,
TFS(&tfs_success_fail), MAUSB_CLEAR_TRANSFERS_STATUS_MASK,
NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_partial,
{ "Partial Delivery", "mausb.clear_transfers.partial", FT_BOOLEAN, 6,
TFS(&tfs_true_false), MAUSB_CLEAR_TRANSFERS_PARTIAL_MASK,
NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_start_req_id,
{ "Start Request ID", "mausb.clear_transfers.start_reqid", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_last_req_id,
{ "Last Request ID", "mausb.clear_transfers.last_reqid", FT_UINT8, BASE_DEC,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_req_block_rsvd,
{ "Reserved", "mausb.clear_transfers_req.block_rsvd", FT_NONE, 0,
NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_clear_transfers_resp_block_rsvd,
{ "Reserved", "mausb.clear_transfers_resp.block_rsvd", FT_UINT32, BASE_HEX,
NULL, MAUSB_CLEAR_TRANSFERS_RESP_BLOCK_RSVD_MASK, NULL, HFILL
}
},
{ &hf_mausb_cancel_transfer_seq_num,
{ "Delivered Sequence Number", "mausb.cancel_transfer.seqnum",
FT_UINT24, BASE_DEC, NULL, 0, NULL, HFILL
}
},
{ &hf_mausb_cancel_transfer_byte_offset,
{ "Delivered Byte Offset", "mausb.cancel_transfer.byte_offset",
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL
}
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_mausb,
&ett_mausb_flags,
&ett_mausb_ep_handle,
&ett_mausb_tflags,
&ett_mausb_iflags,
&ett_mausb_present_time,
&ett_mausb_timestamp,
&ett_mgmt,
&ett_dev_cap,
&ett_clear_transfers_block
};
static ei_register_info ei[] = {
{ &ei_ep_handle_len,
{ "mausb.ei.ep_handle.length", PI_PROTOCOL, PI_WARN,
"Invalid Endpoint handle length field", EXPFILL }
},
{ &ei_len,
{ "mausb.ei.length", PI_MALFORMED, PI_ERROR,
"Packet length field does not match size of packet", EXPFILL }
},
{ &ei_mgmt_type_undef,
{ "mausb.ei.type", PI_PROTOCOL, PI_WARN,
"Undefined management packet type", EXPFILL }
},
{ &ei_mgmt_type_spec_len_long,
{ "mausb.ei.type_spec.len", PI_PROTOCOL, PI_WARN,
"Data exists after type-specific management packet field", EXPFILL }
},
{ &ei_mgmt_type_spec_len_short,
{ "mausb.ei.type_spec.len", PI_PROTOCOL, PI_WARN,
"Expected type-specific management packet data", EXPFILL }
},
{ &ei_dev_cap_len,
{ "mausb.ei.cap_resp.dev_cap.length", PI_PROTOCOL, PI_WARN,
"Incorrect length value for this device capability descriptor",
EXPFILL }
},
{ &ei_dev_cap_resp_desc_len,
{ "mausb.ei.dev_cap_resp.desc_len", PI_PROTOCOL, PI_WARN,
"Incorrect value in Device Descriptors Length field", EXPFILL }
},
{ &ei_cap_resp_desc_len,
{ "mausb.ei.cap_resp.desc_len", PI_PROTOCOL, PI_WARN,
"Value in Descriptors Length field exceeds actual space in packet", EXPFILL }
},
};
module_t *mausb_module;
expert_module_t* expert_mausb;
/* Register the protocol name and description */
proto_mausb = proto_register_protocol("Media Agnostic USB",
"MAUSB", "mausb");
/* Required function calls to register the header fields and subtrees */
proto_register_field_array(proto_mausb, hf, array_length(hf));
proto_register_field_array(proto_mausb, hf_cap, array_length(hf_cap));
proto_register_field_array(proto_mausb, hf_ep_handle, array_length(hf_ep_handle));
proto_register_field_array(proto_mausb, hf_cancel_transfer, array_length(hf_cancel_transfer));
proto_register_subtree_array(ett, array_length(ett));
/* for Expert info */
expert_mausb = expert_register_protocol(proto_mausb);
expert_register_field_array(expert_mausb, ei, array_length(ei));
/* Register Protocol preferences */
mausb_module = prefs_register_protocol(proto_mausb, proto_reg_handoff_mausb);
/* Register TCP port preference */
prefs_register_uint_preference(mausb_module, "tcp.port", "MAUSB TCP Port",
"Set the port for Media Agnostic Packets",
10, &mausb_tcp_port_pref);
/* Register UDP port preference */
prefs_register_uint_preference(mausb_module, "udp.port", "MAUSB UDP Port",
"Set the port for Media Agnostic Packets",
10, &mausb_udp_port_pref);
}
void
proto_reg_handoff_mausb(void)
{
static gboolean initialized = FALSE;
static dissector_handle_t mausb_tcp_handle;
static dissector_handle_t mausb_pkt_handle;
static guint saved_mausb_tcp_port_pref;
static guint saved_mausb_udp_port_pref;
if (!initialized) {
/* only initialize once */
mausb_tcp_handle = create_dissector_handle(dissect_mausb,
proto_mausb);
mausb_pkt_handle = create_dissector_handle(dissect_mausb_pkt,
proto_mausb);
dissector_add_uint("llc.wfa_pid", PID_MAUSB, mausb_pkt_handle);
initialized = TRUE;
} else {
/* if we have already been initialized */
dissector_delete_uint("tcp.port", saved_mausb_tcp_port_pref, mausb_tcp_handle);
dissector_delete_uint("udp.port", saved_mausb_udp_port_pref, mausb_pkt_handle);
}
saved_mausb_tcp_port_pref = mausb_tcp_port_pref;
saved_mausb_udp_port_pref = mausb_udp_port_pref;
dissector_add_uint("tcp.port", mausb_tcp_port_pref, mausb_tcp_handle);
dissector_add_uint("udp.port", mausb_udp_port_pref, mausb_pkt_handle);
}
void
proto_register_wfa_oui(void)
{
static hf_register_info hf[] = {
{ &hf_llc_mausb_pid,
{ "PID", "mausb.pid", FT_UINT16, BASE_HEX,
VALS(mausb_pid_string), 0x0, NULL, HFILL }
}
};
llc_add_oui(OUI_WFA, "llc.wfa_pid", "LLC WFA OUI PID", hf);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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