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wireshark/epan/dissectors/packet-uhd.c

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/* packet-uhd.c
* Routines for UHD captures
*
* (C) 2013 by Klyuchnikov Ivan <kluchnikovi@gmail.com>, Dario Lombardo <lomato@gmail.com>
*
* 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.
*/
/*
* Original dissector can be found here
* https://github.com/chemeris/uhd_dissector
*/
#include "config.h"
#include <epan/packet.h>
void proto_register_uhd(void);
/* ====== DO NOT MAKE UNAPPROVED MODIFICATIONS HERE ===== */
#define USRP2_CTRL_ID_HUH_WHAT 0x20 /* ' ' */
#define UMTRX_CTRL_ID_REQUEST 0x75 /* 'u' */
#define UMTRX_CTRL_ID_RESPONSE 0x55 /* 'U' */
#define USRP2_CTRL_ID_WAZZUP_BRO 0x61 /* 'a' */
#define USRP2_CTRL_ID_WAZZUP_DUDE 0x41 /* 'A' */
#define USRP2_CTRL_ID_TRANSACT_ME_SOME_SPI_BRO 0x73 /* 's' */
#define USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE 0x53 /* 'S' */
#define USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO 0x69 /* 'i' */
#define USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE 0x49 /* 'I' */
#define USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO 0x68 /* 'h' */
#define USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE 0x48 /* 'H' */
#define USRP2_CTRL_ID_GET_THIS_REGISTER_FOR_ME_BRO 0x72 /* 'r' */
#define USRP2_CTRL_ID_OMG_GOT_REGISTER_SO_BAD_DUDE 0x52 /* 'R' */
#define USRP2_CTRL_ID_HOLLER_AT_ME_BRO 0x6c /* 'l' */
#define USRP2_CTRL_ID_HOLLER_BACK_DUDE 0x4c /* 'L' */
#define USRP2_CTRL_ID_PEACE_OUT 0x7e /* '~' */
#define USRP2_REG_ACTION_FPGA_PEEK32 1
#define USRP2_REG_ACTION_FPGA_PEEK16 2
#define USRP2_REG_ACTION_FPGA_POKE32 3
#define USRP2_REG_ACTION_FPGA_POKE16 4
#define USRP2_REG_ACTION_FW_PEEK32 5
#define USRP2_REG_ACTION_FW_POKE32 6
#define UHD_UDP_PORT 49152
/* This is the header as it is used by uhd-generating software.
* It is not used by the wireshark dissector and provided for reference only.
typedef struct{
uint32_t proto_ver;
uint32_t id;
uint32_t seq;
union{
uint32_t ip_addr;
struct {
uint32_t dev;
uint32_t data;
uint8_t miso_edge;
uint8_t mosi_edge;
uint8_t num_bits;
uint8_t readback;
} spi_args;
struct {
uint8_t addr;
uint8_t bytes;
uint8_t data[20];
} i2c_args;
struct {
uint32_t addr;
uint32_t data;
uint8_t action;
} reg_args;
struct {
uint32_t len;
} echo_args;
} data;
} usrp2_ctrl_data_t;
*/
static int proto_uhd = -1;
static int hf_uhd_version = -1;
static int hf_uhd_id = -1;
static int hf_uhd_seq = -1;
static int hf_uhd_ip_addr = -1;
static int hf_uhd_i2c_addr = -1;
static int hf_uhd_i2c_bytes = -1;
static int hf_uhd_i2c_data = -1;
static int hf_uhd_spi_dev = -1;
static int hf_uhd_spi_data = -1;
static int hf_uhd_spi_miso_edge = -1;
static int hf_uhd_spi_mosi_edge = -1;
static int hf_uhd_spi_num_bits = -1;
static int hf_uhd_spi_readback = -1;
static int hf_uhd_reg_addr = -1;
static int hf_uhd_reg_data = -1;
static int hf_uhd_reg_action = -1;
static int hf_uhd_echo_len = -1;
static gint ett_uhd = -1;
static const value_string uhd_ids[] = {
{ USRP2_CTRL_ID_HUH_WHAT, "HUH WHAT" },
{ UMTRX_CTRL_ID_REQUEST, "UMTRX REQUEST" },
{ UMTRX_CTRL_ID_RESPONSE, "UMTRX RESPONSE" },
{ USRP2_CTRL_ID_WAZZUP_BRO, "WAZZUP BRO" },
{ USRP2_CTRL_ID_WAZZUP_DUDE, "WAZZUP DUDE" },
{ USRP2_CTRL_ID_TRANSACT_ME_SOME_SPI_BRO, "TRANSACT ME SOME SPI BRO" },
{ USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE, "OMG TRANSACTED SPI DUDE" },
{ USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO, "DO AN I2C READ FOR ME BRO" },
{ USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE, "HERES THE I2C DATA DUDE" },
{ USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO, "WRITE THESE I2C VALUES BRO" },
{ USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE, "COOL IM DONE I2C WRITE DUDE" },
{ USRP2_CTRL_ID_GET_THIS_REGISTER_FOR_ME_BRO, "GET THIS REGISTER FOR ME BRO" },
{ USRP2_CTRL_ID_OMG_GOT_REGISTER_SO_BAD_DUDE, "OMG GOT REGISTER SO BAD DUDE" },
{ USRP2_CTRL_ID_HOLLER_AT_ME_BRO, "HOLLER AT ME BRO" },
{ USRP2_CTRL_ID_HOLLER_BACK_DUDE, "HOLLER BACK DUDE" },
{ USRP2_CTRL_ID_PEACE_OUT, "PEACE OUT" },
{ 0, NULL }
};
static const value_string uhd_reg_actions[] = {
{ USRP2_REG_ACTION_FPGA_PEEK32, "FPGA PEEK32" },
{ USRP2_REG_ACTION_FPGA_PEEK16, "FPGA PEEK16" },
{ USRP2_REG_ACTION_FPGA_POKE32, "FPGA POKE32" },
{ USRP2_REG_ACTION_FPGA_POKE16, "FPGA POKE16" },
{ USRP2_REG_ACTION_FW_PEEK32, "FW PEEK32" },
{ USRP2_REG_ACTION_FW_POKE32, "FW POKE32" },
{ 0, NULL }
};
void proto_reg_handoff_uhd(void);
/* dissect a UHD header and hand payload off to respective dissector */
static int
dissect_uhd(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
int ind;
proto_item *ti;
proto_tree *uhd_tree;
guint32 id;
guint8 i2c_bytes;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "UHD");
col_clear(pinfo->cinfo, COL_INFO);
id = tvb_get_ntohl(tvb, 4);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(id, uhd_ids, "Unknown UHD message type '%c'"));
if (tree == NULL)
return tvb_captured_length(tvb);
ti = proto_tree_add_protocol_format(tree, proto_uhd, tvb, 0, 34, "UHD id = %c ", id);
uhd_tree = proto_item_add_subtree(ti, ett_uhd);
proto_tree_add_item(uhd_tree, hf_uhd_version, tvb, 0, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_id, tvb, 4, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_seq, tvb, 8, 4, ENC_BIG_ENDIAN);
switch (id) {
case UMTRX_CTRL_ID_REQUEST:
case UMTRX_CTRL_ID_RESPONSE:
case USRP2_CTRL_ID_WAZZUP_BRO:
case USRP2_CTRL_ID_WAZZUP_DUDE:
proto_tree_add_item(uhd_tree, hf_uhd_ip_addr, tvb, 12, 4, ENC_BIG_ENDIAN);
break;
case USRP2_CTRL_ID_TRANSACT_ME_SOME_SPI_BRO:
case USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE:
proto_tree_add_item(uhd_tree, hf_uhd_spi_dev, tvb, 12, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_spi_data, tvb, 16, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_spi_miso_edge, tvb, 20, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_spi_mosi_edge, tvb, 21, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_spi_num_bits, tvb, 22, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_spi_readback, tvb, 23, 1, ENC_BIG_ENDIAN);
break;
case USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO:
case USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE:
case USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO:
case USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE:
proto_tree_add_item(uhd_tree, hf_uhd_i2c_addr, tvb, 12, 1, ENC_BIG_ENDIAN);
i2c_bytes = tvb_get_guint8(tvb, 13);
proto_tree_add_item(uhd_tree, hf_uhd_i2c_bytes, tvb, 13, 1, ENC_BIG_ENDIAN);
for (ind = 0; ind < i2c_bytes; ind++) {
proto_tree_add_item(uhd_tree, hf_uhd_i2c_data, tvb, 14 + ind, 1, ENC_BIG_ENDIAN);
}
break;
case USRP2_CTRL_ID_GET_THIS_REGISTER_FOR_ME_BRO:
case USRP2_CTRL_ID_OMG_GOT_REGISTER_SO_BAD_DUDE:
proto_tree_add_item(uhd_tree, hf_uhd_reg_addr, tvb, 12, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_reg_data, tvb, 16, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(uhd_tree, hf_uhd_reg_action, tvb, 20, 1, ENC_BIG_ENDIAN);
break;
case USRP2_CTRL_ID_HOLLER_AT_ME_BRO:
case USRP2_CTRL_ID_HOLLER_BACK_DUDE:
case USRP2_CTRL_ID_HUH_WHAT:
case USRP2_CTRL_ID_PEACE_OUT:
proto_tree_add_item(uhd_tree, hf_uhd_echo_len, tvb, 12, 4, ENC_BIG_ENDIAN);
break;
}
return tvb_captured_length(tvb);
}
void
proto_register_uhd(void)
{
static hf_register_info hf[] = {
{ &hf_uhd_version, { "VERSION", "uhd.version",
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_uhd_id, { "ID", "uhd.id",
FT_UINT32, BASE_HEX, VALS(uhd_ids), 0, NULL, HFILL } },
{ &hf_uhd_seq, { "SEQ", "uhd.seq",
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_uhd_ip_addr, { "IP ADDR", "uhd.ip_addr",
FT_IPv4, BASE_NONE, NULL, 0x0,"", HFILL } },
{ &hf_uhd_i2c_addr, { "I2C ADDR", "uhd.i2c_addr",
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_i2c_bytes, { "I2C BYTES", "uhd.i2c_bytes",
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_uhd_i2c_data, { "I2C DATA", "uhd.i2c_data",
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_dev, { "SPI DEV", "uhd.spi_dev",
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_data, { "SPI DATA", "uhd.spi_data",
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_miso_edge, { "SPI MISO EDGE", "uhd.spi_miso_edge",
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_mosi_edge, { "SPI MOSI EDGE", "uhd.spi_mosi_edge",
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_num_bits, { "SPI NUM BITS", "uhd.spi_num_bits",
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_uhd_spi_readback, { "SPI READBACK", "uhd.spi_readback",
FT_UINT8, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_reg_addr, { "REG ADDR", "uhd.reg_addr",
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_reg_data, { "REG DATA", "uhd.reg_data",
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_uhd_reg_action, { "REG ACTION", "uhd.reg_action",
FT_UINT8, BASE_HEX, VALS(uhd_reg_actions), 0, NULL, HFILL } },
{ &hf_uhd_echo_len, { "ECHO LEN", "uhd.echo_len",
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
};
static gint *ett[] = {
&ett_uhd
};
proto_uhd = proto_register_protocol("UHD", "UHD", "uhd");
proto_register_field_array(proto_uhd, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_uhd(void)
{
dissector_handle_t uhd_handle;
uhd_handle = create_dissector_handle(dissect_uhd, proto_uhd);
dissector_add_for_decode_as_with_preference("udp.port", uhd_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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