forked from osmocom/wireshark
![Alexis La Goutte](/assets/img/avatar_default.png)
Change-Id: I063b0ee2dd4ed948f889c33ab458df20079a64ff Reviewed-on: https://code.wireshark.org/review/12370 Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com> Petri-Dish: Alexis La Goutte <alexis.lagoutte@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Anders Broman <a.broman58@gmail.com>
567 lines
18 KiB
C
567 lines
18 KiB
C
/* packet-cpfi.c
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* Routines for CPFI Cross Point Frame Injector dissection
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* CPFI - Cross Point Frame Injector is a CNT proprietary
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* protocol used to carry Fibre Channel data over UDP
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*
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* Copyright 2003, Dave Sclarsky <dave_sclarsky[AT]cnt.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-m2tp.c
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* Thanks to Heinz Prantner for his motivation and assistance
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include "packet-fc.h"
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void proto_register_cpfi(void);
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void proto_reg_handoff_cpfi(void);
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#define CPFI_DEFAULT_UDP_PORT 5000
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#define CPFI_DEFAULT_TTOT_UDP_PORT 5001
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#define FIRST_TIO_CARD_ADDRESS 0x380
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/* SOF defines */
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#define CPFI_FRAME_TYPE_MASK 0xF0000000
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#define CPFI_FRAME_TYPE_SHIFT 28
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#define CPFI_SOURCE_MASK 0x0FFC0000
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#define CPFI_SOURCE_SHIFT 18
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#define CPFI_DEST_MASK 0x0003FF00
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#define CPFI_DEST_SHIFT 8
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#define CPFI_SOF_TYPE_MASK 0x000000F0
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#define CPFI_SPEED_MASK 0x0000000C
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#define CPFI_OPM_ERROR_MASK 0x00000002
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#define CPFI_FROM_LCM_MASK 0x00000001
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/* EOF defines */
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#define CPFI_EOF_TYPE_MASK 0x78000000
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#define CPFI_EOF_ERROR_MASK 0x7FE00000
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/* configurable parameters */
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static guint gbl_cpfi_udp_port = CPFI_DEFAULT_UDP_PORT;
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static guint gbl_cpfi_ttot_udp_port = CPFI_DEFAULT_TTOT_UDP_PORT;
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static gboolean cpfi_arrow_moves = TRUE;
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/* Initialize the protocol and registered fields */
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static int proto_cpfi = -1;
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static int hf_cpfi_word_one = -1;
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static int hf_cpfi_word_two = -1;
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/* SOF word 1: */
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static int hf_cpfi_frame_type = -1;
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static int hf_cpfi_source = -1;
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static int hf_cpfi_dest = -1;
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static int hf_cpfi_SOF_type = -1;
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static int hf_cpfi_speed = -1;
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static int hf_cpfi_OPM_error = -1;
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static int hf_cpfi_from_LCM = -1;
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/* EOF */
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static int hf_cpfi_CRC_32 = -1;
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static int hf_cpfi_EOF_type = -1;
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/* Hidden items */
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static int hf_cpfi_t_instance = -1;
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static int hf_cpfi_t_src_instance = -1;
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static int hf_cpfi_t_dst_instance = -1;
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static int hf_cpfi_t_board = -1;
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static int hf_cpfi_t_src_board = -1;
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static int hf_cpfi_t_dst_board = -1;
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static int hf_cpfi_t_port = -1;
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static int hf_cpfi_t_src_port = -1;
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static int hf_cpfi_t_dst_port = -1;
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static char src_str[20];
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static char dst_str[20];
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static const char l_to_r_arrow[] = "-->";
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static const char r_to_l_arrow[] = "<--";
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static const char *left = src_str;
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static const char *right = dst_str;
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static const char *arrow = l_to_r_arrow;
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static const char direction_and_port_string[] = "[%s %s %s] ";
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/* Initialize the subtree pointers */
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static gint ett_cpfi = -1;
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static gint ett_cpfi_header = -1;
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static gint ett_cpfi_footer = -1;
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static dissector_handle_t fc_handle;
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static const value_string sof_type_vals[] = {
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{0, "SOFf"},
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{1, "SOFi2"},
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{2, "SOFn2"},
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{3, "SOFi3"},
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{4, "SOFn3"},
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{5, "SOFc1"},
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{6, "SOFi1"},
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{7, "SOFn1"},
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{8, "SOFc4"},
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{9, "SOFi4"},
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{10, "SOFn4"},
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{0, NULL},
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};
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static const value_string speed_vals[] = {
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{0, "1 GBIT"},
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{1, "2 GBIT"},
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{2, "4 GBIT"},
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{3, "10 GBIT"},
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{0, NULL},
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};
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static const value_string eof_type_vals[] = {
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{0, "EOFn"},
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{1, "EOFt"},
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{2, "EOFni"},
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{3, "EOFa"},
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{4, "EOFdt"},
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{5, "EOFdti"},
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{6, "EOFrt"},
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{7, "EOFrti"},
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{0, NULL},
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};
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/* Header */
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static void
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dissect_cpfi_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint32 word1;
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#if 0
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guint32 word2;
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#endif
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guint32 tda;
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guint32 src;
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guint8 src_instance = 0;
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guint8 src_board = 0;
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guint8 src_port = 0;
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guint32 dst;
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guint8 dst_instance = 0;
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guint8 dst_board = 0;
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guint8 dst_port = 0;
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proto_tree *extra_tree = NULL;
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/* add a tree for the header */
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if ( tree != NULL)
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{
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proto_item *extra_item;
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extra_item = proto_tree_add_protocol_format(tree, proto_cpfi, tvb, 0, -1, "Header");
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extra_tree = proto_item_add_subtree(extra_item, ett_cpfi_header);
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}
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/* Extract the common header, and get the bits we need */
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word1 = tvb_get_ntohl (tvb, 0);
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#if 0
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word2 = tvb_get_ntohl (tvb, sizeof(word1));
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#endif
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/* Figure out where the frame came from. dstTDA is source of frame! */
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tda = (word1 & CPFI_DEST_MASK) >> CPFI_DEST_SHIFT;
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if ( tda >= FIRST_TIO_CARD_ADDRESS )
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{
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g_strlcpy(src_str, " CPFI", sizeof(src_str));
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src = 0; /* Make it smallest */
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}
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else
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{
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const guint8 *srcmac;
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/* Make sure this is an Ethernet address. */
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DISSECTOR_ASSERT(pinfo->src.type == AT_ETHER);
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srcmac = (const guint8 *)pinfo->src.data;
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src_instance = srcmac[2]-1;
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src_board = tda >> 4;
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src_port = tda & 0x0f;
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src = (1 << 24) + (src_instance << 16) + (src_board << 8) + src_port;
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g_snprintf(src_str, sizeof(src_str), "%u.%u.%u", src_instance, src_board, src_port);
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}
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/* Figure out where the frame is going. srcTDA is destination of frame! */
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tda = (word1 & CPFI_SOURCE_MASK) >> CPFI_SOURCE_SHIFT;
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if ( tda >= FIRST_TIO_CARD_ADDRESS )
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{
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g_strlcpy(dst_str, " CPFI", sizeof(dst_str));
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dst = 0; /* Make it smallest */
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}
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else
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{
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const guint8 *dstmac;
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/* Make sure this is an Ethernet address. */
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DISSECTOR_ASSERT(pinfo->dst.type == AT_ETHER);
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dstmac = (const guint8 *)pinfo->dst.data;
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dst_instance = dstmac[2]-1;
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dst_board = tda >> 4;
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dst_port = tda & 0x0f;
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dst = (1 << 24) + (dst_instance << 16) + (dst_board << 8) + dst_port;
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g_snprintf(dst_str, sizeof(dst_str), "%u.%u.%u", dst_instance, dst_board, dst_port);
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}
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/* Set up the source and destination and arrow per user configuration. */
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if ( cpfi_arrow_moves && (dst < src) )
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{
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left = dst_str;
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arrow = r_to_l_arrow;
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right = src_str;
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}
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else
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{
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left = src_str;
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arrow = l_to_r_arrow;
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right = dst_str;
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}
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if (extra_tree) {
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proto_item *hidden_item;
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/* For "real" TDAs (i.e. not for microTDAs), add hidden addresses to allow filtering */
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if ( src != 0 )
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{
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_instance, tvb, 0, 1, &src_instance);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_src_instance, tvb, 0, 1, &src_instance);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_board, tvb, 0, 1, &src_board);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_src_board, tvb, 0, 1, &src_board);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_port, tvb, 0, 1, &src_port);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_src_port, tvb, 0, 1, &src_port);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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}
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if ( dst != 0 )
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{
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_instance, tvb, 0, 1, &dst_instance);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_dst_instance, tvb, 0, 1, &dst_instance);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_board, tvb, 0, 1, &dst_board);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_dst_board, tvb, 0, 1, &dst_board);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_port, tvb, 0, 1, &dst_port);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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hidden_item = proto_tree_add_bytes(extra_tree, hf_cpfi_t_dst_port, tvb, 0, 1, &dst_port);
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PROTO_ITEM_SET_HIDDEN(hidden_item);
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}
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/* add word 1 components to the protocol tree */
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proto_tree_add_item(extra_tree, hf_cpfi_word_one , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_frame_type, tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_source , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_dest , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_SOF_type , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_speed , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_OPM_error , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_from_LCM , tvb, 0, 4, ENC_BIG_ENDIAN);
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/* add word 2 components to the protocol tree */
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proto_tree_add_item(extra_tree, hf_cpfi_word_two , tvb, 4, 4, ENC_BIG_ENDIAN);
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};
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}
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/* Footer */
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static void
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dissect_cpfi_footer(tvbuff_t *tvb, proto_tree *tree)
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{
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proto_tree *extra_tree = NULL;
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/* add a tree for the footer */
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if ( tree != NULL)
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{
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proto_item *extra_item;
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extra_item = proto_tree_add_protocol_format(tree, proto_cpfi, tvb, 0, -1, "Footer");
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extra_tree = proto_item_add_subtree(extra_item, ett_cpfi_footer);
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}
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if (extra_tree) {
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proto_tree_add_item(extra_tree, hf_cpfi_CRC_32 , tvb, 0, 4, ENC_BIG_ENDIAN);
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proto_tree_add_item(extra_tree, hf_cpfi_EOF_type, tvb, 4, 4, ENC_BIG_ENDIAN);
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}
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}
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/* CPFI */
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static int
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dissect_cpfi(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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tvbuff_t *header_tvb, *body_tvb, *footer_tvb;
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proto_item *cpfi_item = NULL;
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proto_tree *cpfi_tree = NULL;
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gint length, reported_length, body_length, reported_body_length;
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guint8 frame_type;
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fc_data_t fc_data;
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frame_type = (tvb_get_ntohl (message_tvb, 0) & CPFI_FRAME_TYPE_MASK) >> CPFI_FRAME_TYPE_SHIFT;
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/* If this is not a CPFI frame, return 0 to let another dissector try to
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* dissect it.
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*/
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if ( !((frame_type == 9) && fc_handle) )
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return 0;
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/* If we don't have Ethernet addresses, can't do further dissection... */
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if (pinfo->dst.type != AT_ETHER || pinfo->src.type != AT_ETHER)
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return 0;
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length = tvb_captured_length_remaining(message_tvb, 8);
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reported_length = tvb_reported_length_remaining(message_tvb, 8);
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if (reported_length < 8)
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{
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/* We don't even have enough for the footer. */
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return 0;
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}
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/* Length of packet, minus the footer. */
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reported_body_length = reported_length - 8;
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/* How much of that do we have in the tvbuff? */
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body_length = length;
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if (body_length > reported_body_length)
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body_length = reported_body_length;
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length = tvb_captured_length_remaining(message_tvb, 8+body_length);
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if (length < 0)
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{
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/* The footer wasn't captured at all.
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XXX - we'd like to throw a BoundsError if that's the case. */
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return 0;
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}
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/* In the interest of speed, if "tree" is NULL, don't do any work not
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necessary to generate protocol tree items. */
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if (tree) {
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/* create the protocol tree */
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cpfi_item = proto_tree_add_item(tree, proto_cpfi, message_tvb, 0, -1, ENC_NA);
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cpfi_tree = proto_item_add_subtree(cpfi_item, ett_cpfi);
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}
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/* Set up the frame controls - can we do better than this? */
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fc_data.sof_eof = 0;
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fc_data.sof_eof |= FC_DATA_SOF_FIRST_FRAME;
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fc_data.sof_eof |= FC_DATA_EOF_LAST_FRAME;
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fc_data.sof_eof |= FC_DATA_EOF_INVALID;
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/* dissect the message */
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/* extract and process the header */
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header_tvb = tvb_new_subset_length(message_tvb, 0, 8);
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dissect_cpfi_header(header_tvb, pinfo, cpfi_tree);
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body_tvb = tvb_new_subset(message_tvb, 8, body_length, reported_body_length);
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fc_data.ethertype = 0;
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call_dissector_with_data(fc_handle, body_tvb, pinfo, tree, &fc_data);
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/* add more info, now that FC added its */
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proto_item_append_text(cpfi_item, direction_and_port_string, left, arrow, right);
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col_prepend_fstr(pinfo->cinfo, COL_INFO, direction_and_port_string, left, arrow, right);
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/* Do the footer */
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footer_tvb = tvb_new_subset(message_tvb, 8+body_length, length, 8);
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dissect_cpfi_footer(footer_tvb, cpfi_tree);
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return(tvb_reported_length(message_tvb));
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}
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/* Register the protocol with Wireshark */
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void
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proto_register_cpfi(void)
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{
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module_t *cpfi_module;
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_cpfi_word_one,
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{ "Word one", "cpfi.word_one",
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FT_UINT32, BASE_HEX, NULL, 0x0,
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NULL, HFILL}},
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{ &hf_cpfi_word_two,
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{ "Word two", "cpfi.word_two",
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FT_UINT32, BASE_HEX, NULL, 0x0,
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NULL, HFILL}},
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{ &hf_cpfi_frame_type,
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{ "FrmType", "cpfi.frmtype",
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FT_UINT32, BASE_HEX, NULL, CPFI_FRAME_TYPE_MASK,
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"Frame Type", HFILL}},
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{ &hf_cpfi_source,
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{ "srcTDA", "cpfi.srcTDA",
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FT_UINT32, BASE_HEX, NULL, CPFI_SOURCE_MASK,
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"Source TDA (10 bits)", HFILL}},
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{ &hf_cpfi_dest,
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{ "dstTDA", "cpfi.dstTDA",
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FT_UINT32, BASE_HEX, NULL, CPFI_DEST_MASK,
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"Source TDA (10 bits)", HFILL}},
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{ &hf_cpfi_SOF_type,
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{ "SOFtype", "cpfi.SOFtype",
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FT_UINT32, BASE_HEX, VALS(sof_type_vals), CPFI_SOF_TYPE_MASK,
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"SOF Type", HFILL}},
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{ &hf_cpfi_speed,
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{ "speed", "cpfi.speed",
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FT_UINT32, BASE_HEX, VALS(speed_vals), CPFI_SPEED_MASK,
|
|
"SOF Type", HFILL}},
|
|
{ &hf_cpfi_OPM_error,
|
|
{ "OPMerror", "cpfi.OPMerror",
|
|
FT_BOOLEAN, 32, NULL, CPFI_OPM_ERROR_MASK,
|
|
"OPM Error?", HFILL}},
|
|
{ &hf_cpfi_from_LCM,
|
|
{ "fromLCM", "cpfi.fromLCM",
|
|
FT_BOOLEAN, 32, NULL, CPFI_FROM_LCM_MASK,
|
|
"from LCM?", HFILL}},
|
|
|
|
{ &hf_cpfi_CRC_32,
|
|
{ "CRC-32", "cpfi.crc-32",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_EOF_type,
|
|
{ "EOFtype", "cpfi.EOFtype",
|
|
FT_UINT32, BASE_HEX, VALS(eof_type_vals), CPFI_EOF_TYPE_MASK,
|
|
"EOF Type", HFILL}},
|
|
|
|
{ &hf_cpfi_t_instance,
|
|
{ "Instance", "cpfi.instance",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_src_instance,
|
|
{ "Source Instance", "cpfi.src_instance",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_dst_instance,
|
|
{ "Destination Instance", "cpfi.dst_instance",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_board,
|
|
{ "Board", "cpfi.board",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_src_board,
|
|
{ "Source Board", "cpfi.src_board",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_dst_board,
|
|
{ "Destination Board", "cpfi.dst_board",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_port,
|
|
{ "Port", "cpfi.port",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_src_port,
|
|
{ "Source Port", "cpfi.src_port",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
|
|
{ &hf_cpfi_t_dst_port,
|
|
{ "Destination Port", "cpfi.dst_port",
|
|
FT_BYTES, BASE_NONE,
|
|
NULL, 0x0, NULL, HFILL}},
|
|
};
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_cpfi,
|
|
&ett_cpfi_header,
|
|
&ett_cpfi_footer
|
|
};
|
|
|
|
|
|
/* Register the protocol name and description */
|
|
proto_cpfi = proto_register_protocol("Cross Point Frame Injector", "CPFI", "cpfi");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_cpfi, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register our configuration options for CPFI */
|
|
cpfi_module = prefs_register_protocol(proto_cpfi, proto_reg_handoff_cpfi);
|
|
prefs_register_uint_preference(cpfi_module, "udp.port", "CPFI UDP Port",
|
|
"Set the port for CPFI messages (if other"
|
|
" than the default of 5000)",
|
|
10, &gbl_cpfi_udp_port);
|
|
prefs_register_uint_preference(cpfi_module, "udp.port2", "InstanceToInstance UDP Port",
|
|
"Set the port for InstanceToInstance messages (if other"
|
|
" than the default of 5001)",
|
|
10, &gbl_cpfi_ttot_udp_port);
|
|
prefs_register_bool_preference(cpfi_module, "arrow_ctl",
|
|
"Enable Active Arrow Control",
|
|
"Control the way the '-->' is displayed."
|
|
" When enabled, keeps the 'lowest valued' endpoint of the src-dest pair"
|
|
" on the left, and the arrow moves to distinguish source from dest."
|
|
" When disabled, keeps the arrow pointing right so the source of the frame"
|
|
" is always on the left.",
|
|
&cpfi_arrow_moves);
|
|
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_cpfi(void)
|
|
{
|
|
static gboolean cpfi_init_complete = FALSE;
|
|
static dissector_handle_t cpfi_handle;
|
|
static guint cpfi_udp_port;
|
|
static guint cpfi_ttot_udp_port;
|
|
|
|
if ( !cpfi_init_complete )
|
|
{
|
|
fc_handle = find_dissector("fc");
|
|
cpfi_handle = create_dissector_handle(dissect_cpfi, proto_cpfi);
|
|
cpfi_init_complete = TRUE;
|
|
}
|
|
else
|
|
{
|
|
dissector_delete_uint("udp.port", cpfi_udp_port, cpfi_handle);
|
|
dissector_delete_uint("udp.port", cpfi_ttot_udp_port, cpfi_handle);
|
|
}
|
|
|
|
cpfi_udp_port = gbl_cpfi_udp_port;
|
|
cpfi_ttot_udp_port = gbl_cpfi_ttot_udp_port;
|
|
|
|
dissector_add_uint("udp.port", cpfi_udp_port, cpfi_handle);
|
|
dissector_add_uint("udp.port", cpfi_ttot_udp_port, cpfi_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|