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Diffstat (limited to 'epan/dissectors/packet-ax4000.c')
| -rw-r--r-- | epan/dissectors/packet-ax4000.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/epan/dissectors/packet-ax4000.c b/epan/dissectors/packet-ax4000.c new file mode 100644 index 00000000..44c0397d --- /dev/null +++ b/epan/dissectors/packet-ax4000.c @@ -0,0 +1,153 @@ +/* packet-ax4000.c + * Routines for Spirent AX/4000 Test Block dissection + * Copyright 2004, SEKINE Hideki <sekineh@gf7.so-net.ne.jp> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/ipproto.h> + +void proto_register_ax4000(void); +void proto_reg_handoff_ax4000(void); + +static dissector_handle_t ax4000_handle; + +/* Initialize the protocol and registered fields */ +static int proto_ax4000 = -1; +static int hf_ax4000_port = -1; +static int hf_ax4000_chassis = -1; +static int hf_ax4000_fill = -1; +static int hf_ax4000_index = -1; +static int hf_ax4000_timestamp = -1; +static int hf_ax4000_seq = -1; +static int hf_ax4000_crc = -1; + +/* Initialize the subtree pointers */ +static gint ett_ax4000 = -1; + +/* Code to actually dissect the packets */ +static int +dissect_ax4000(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + proto_item *ti; + proto_tree *ax4000_tree; + + guint32 ax_port, ax_chassis, ax_index, ax_seq, ax_timestamp; + + /* Make entries in Protocol column and Info column on summary display */ + col_set_str(pinfo->cinfo, COL_PROTOCOL, "AX4000"); + col_clear(pinfo->cinfo, COL_INFO); + + /* create display subtree for the protocol */ + ti = proto_tree_add_item(tree, proto_ax4000, tvb, 0, -1, ENC_NA); + + ax4000_tree = proto_item_add_subtree(ti, ett_ax4000); + + proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_port, tvb, 0, 1, ENC_LITTLE_ENDIAN, &ax_port); + proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_chassis, tvb, 1, 1, ENC_LITTLE_ENDIAN, &ax_chassis); + proto_tree_add_item(ax4000_tree, hf_ax4000_fill, tvb, 2, 1, ENC_BIG_ENDIAN); + proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_index, tvb, 2, 2, ENC_BIG_ENDIAN, &ax_index); + proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_timestamp, tvb, 6, 4, ENC_LITTLE_ENDIAN, &ax_timestamp); + proto_tree_add_item_ret_uint(ax4000_tree, hf_ax4000_seq, tvb, 10, 4, ENC_LITTLE_ENDIAN, &ax_seq); + proto_tree_add_item(ax4000_tree, hf_ax4000_crc, tvb, 14, 2, ENC_LITTLE_ENDIAN); + + col_append_fstr(pinfo->cinfo, COL_INFO, + "Chss:%u Prt:%u Idx:%u Seq:0x%08x TS:%.6f[msec]", + ax_chassis, ax_port, ax_index, ax_seq, ax_timestamp*1e-5); + + return tvb_captured_length(tvb); +} + +/* Register the protocol with Wireshark */ + +/* this format is require because a script is used to build the C function + that calls all the protocol registration. +*/ + +void +proto_register_ax4000(void) +{ + static hf_register_info hf[] = { + { &hf_ax4000_port, + { "Port Number", "ax4000.port", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_ax4000_chassis, + { "Chassis Number", "ax4000.chassis", + FT_UINT8, BASE_DEC, NULL, 0x0, + NULL, HFILL } + }, + { &hf_ax4000_fill, + { "Fill Type", "ax4000.fill", + FT_UINT8, BASE_DEC, NULL, 0xc0, + NULL, HFILL } + }, + { &hf_ax4000_index, + { "Index", "ax4000.index", + FT_UINT16, BASE_DEC, NULL, 0x0FFF, + NULL, HFILL } + }, + { &hf_ax4000_timestamp, + { "Timestamp", "ax4000.timestamp", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_ax4000_seq, + { "Sequence Number", "ax4000.seq", + FT_UINT32, BASE_HEX, NULL, 0x0, + NULL, HFILL } + }, + { &hf_ax4000_crc, + { "CRC (unchecked)", "ax4000.crc", + FT_UINT16, BASE_HEX, NULL, 0x0, + NULL, HFILL } + } + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_ax4000 + }; + + /* Register the protocol name and description */ + proto_ax4000 = proto_register_protocol("AX/4000 Test Block", + "AX4000", "ax4000"); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_ax4000, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + ax4000_handle = register_dissector("ax4000", dissect_ax4000, proto_ax4000); +} + +#define AX4000_TCP_PORT 3357 /* assigned by IANA */ +#define AX4000_UDP_PORT 3357 /* assigned by IANA */ + +void +proto_reg_handoff_ax4000(void) +{ + dissector_add_uint("ip.proto", IP_PROTO_AX4000, ax4000_handle); + dissector_add_uint_with_preference("tcp.port", AX4000_TCP_PORT, ax4000_handle); + dissector_add_uint_with_preference("udp.port", AX4000_UDP_PORT, ax4000_handle); +} + +/* + * Editor modelines - https://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: + */ |