forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
That removes most of the uses of the frame number field in the frame_data structure. Change-Id: Ie22e4533e87f8360d7c0a61ca6ffb796cc233f22 Reviewed-on: https://code.wireshark.org/review/13509 Reviewed-by: Guy Harris <guy@alum.mit.edu>
1643 lines
60 KiB
C
1643 lines
60 KiB
C
/* packet-fc.c
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* Routines for Fibre Channel Decoding (FC Header, Link Ctl & Basic Link Svc)
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* Copyright 2001, Dinesh G Dutt <ddutt@cisco.com>
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* Copyright 2003 Ronnie Sahlberg, exchange first/last matching and
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* tap listener and misc updates
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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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* 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/exceptions.h>
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#include <epan/prefs.h>
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#include <epan/to_str.h>
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#include <wiretap/wtap.h>
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#include <epan/reassemble.h>
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#include <epan/conversation_table.h>
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#include <epan/etypes.h>
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#include <epan/srt_table.h>
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#include "packet-fc.h"
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#include "packet-fclctl.h"
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#include "packet-fcbls.h"
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#include <epan/crc32-tvb.h>
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#include <epan/expert.h>
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void proto_register_fc(void);
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void proto_reg_handoff_fc(void);
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#define FC_HEADER_SIZE 24
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#define FC_RCTL_VFT 0x50
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#define MDSHDR_TRAILER_SIZE 6
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/* Size of various fields in FC header in bytes */
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#define FC_RCTL_SIZE 1
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#define FC_DID_SIZE 3
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#define FC_CSCTL_SIZE 1
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#define FC_SID_SIZE 3
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#define FC_TYPE_SIZE 1
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#define FC_FCTL_SIZE 3
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#define FC_SEQID_SIZE 1
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#define FC_DFCTL_SIZE 1
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#define FC_SEQCNT_SIZE 2
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#define FC_OXID_SIZE 2
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#define FC_RXID_SIZE 2
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#define FC_PARAM_SIZE 4
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/* Initialize the protocol and registered fields */
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static int proto_fc = -1;
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static int hf_fc_time = -1;
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static int hf_fc_exchange_first_frame = -1;
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static int hf_fc_exchange_last_frame = -1;
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static int hf_fc_rctl = -1;
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static int hf_fc_did = -1;
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static int hf_fc_csctl = -1;
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static int hf_fc_sid = -1;
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static int hf_fc_id = -1;
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static int hf_fc_type = -1;
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static int hf_fc_fctl = -1;
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static int hf_fc_fctl_exchange_responder = -1;
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static int hf_fc_fctl_seq_recipient = -1;
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static int hf_fc_fctl_exchange_first = -1;
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static int hf_fc_fctl_exchange_last = -1;
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static int hf_fc_fctl_seq_last = -1;
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static int hf_fc_fctl_priority = -1;
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static int hf_fc_fctl_transfer_seq_initiative = -1;
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static int hf_fc_fctl_rexmitted_seq = -1;
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static int hf_fc_fctl_rel_offset = -1;
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static int hf_fc_fctl_abts_ack = -1;
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/* static int hf_fc_fctl_abts_not_ack = -1; */
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static int hf_fc_fctl_last_data_frame = -1;
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static int hf_fc_fctl_ack_0_1 = -1;
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static int hf_fc_seqid = -1;
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static int hf_fc_dfctl = -1;
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static int hf_fc_seqcnt = -1;
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static int hf_fc_oxid = -1;
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static int hf_fc_rxid = -1;
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static int hf_fc_param = -1;
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static int hf_fc_ftype = -1; /* Derived field, non-existent in FC hdr */
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static int hf_fc_reassembled = -1;
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static int hf_fc_relative_offset = -1;
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/* VFT fields */
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static int hf_fc_vft = -1;
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static int hf_fc_vft_rctl = -1;
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static int hf_fc_vft_ver = -1;
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static int hf_fc_vft_type = -1;
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static int hf_fc_vft_pri = -1;
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static int hf_fc_vft_vf_id = -1;
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static int hf_fc_vft_hop_ct = -1;
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/* Network_Header fields */
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static int hf_fc_nh_da = -1;
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static int hf_fc_nh_sa = -1;
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/* For Basic Link Svc */
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static int hf_fc_bls_seqid_vld = -1;
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static int hf_fc_bls_lastvld_seqid = -1;
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static int hf_fc_bls_oxid = -1;
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static int hf_fc_bls_rxid = -1;
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static int hf_fc_bls_lowseqcnt = -1;
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static int hf_fc_bls_hiseqcnt = -1;
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static int hf_fc_bls_rjtcode = -1;
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static int hf_fc_bls_rjtdetail = -1;
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static int hf_fc_bls_vendor = -1;
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/* For FC SOF */
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static int proto_fcsof = -1;
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static int hf_fcsof = -1;
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static int hf_fceof = -1;
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static int hf_fccrc = -1;
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static int ett_fcsof = -1;
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static int ett_fceof = -1;
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static int ett_fccrc = -1;
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/* Initialize the subtree pointers */
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static gint ett_fc = -1;
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static gint ett_fctl = -1;
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static gint ett_fcbls = -1;
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static gint ett_fc_vft = -1;
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static expert_field ei_fccrc = EI_INIT;
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static expert_field ei_short_hdr = EI_INIT;
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static expert_field ei_frag_size = EI_INIT;
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static dissector_handle_t fc_handle, fcsof_handle;
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static dissector_table_t fcftype_dissector_table;
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static dissector_handle_t data_handle;
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static int fc_tap = -1;
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typedef struct _fc_conv_data_t {
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wmem_tree_t *exchanges;
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wmem_tree_t *luns;
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} fc_conv_data_t;
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/* Reassembly stuff */
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static gboolean fc_reassemble = TRUE;
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static guint32 fc_max_frame_size = 1024;
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static reassembly_table fc_reassembly_table;
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typedef struct _fcseq_conv_key {
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guint32 conv_idx;
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} fcseq_conv_key_t;
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typedef struct _fcseq_conv_data {
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guint32 seq_cnt;
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} fcseq_conv_data_t;
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static GHashTable *fcseq_req_hash = NULL;
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/*
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* Hash Functions
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*/
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static gint
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fcseq_equal(gconstpointer v, gconstpointer w)
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{
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const fcseq_conv_key_t *v1 = (const fcseq_conv_key_t *)v;
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const fcseq_conv_key_t *v2 = (const fcseq_conv_key_t *)w;
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return (v1->conv_idx == v2->conv_idx);
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}
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static guint
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fcseq_hash (gconstpointer v)
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{
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const fcseq_conv_key_t *key = (const fcseq_conv_key_t *)v;
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guint val;
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val = key->conv_idx;
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return val;
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}
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static void
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fc_exchange_init_protocol(void)
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{
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reassembly_table_init(&fc_reassembly_table,
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&addresses_reassembly_table_functions);
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fcseq_req_hash = g_hash_table_new(fcseq_hash, fcseq_equal);
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}
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static void
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fc_exchange_cleanup_protocol(void)
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{
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reassembly_table_destroy(&fc_reassembly_table);
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g_hash_table_destroy(fcseq_req_hash);
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}
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static const char* fc_conv_get_filter_type(conv_item_t* conv, conv_filter_type_e filter)
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{
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if ((filter == CONV_FT_SRC_ADDRESS) && (conv->src_address.type == AT_FC))
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return "fc.s_id";
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if ((filter == CONV_FT_DST_ADDRESS) && (conv->dst_address.type == AT_FC))
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return "fc.d_id";
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if ((filter == CONV_FT_ANY_ADDRESS) && (conv->src_address.type == AT_FC))
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return "fc.id";
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return CONV_FILTER_INVALID;
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}
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static ct_dissector_info_t fc_ct_dissector_info = {&fc_conv_get_filter_type};
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static int
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fc_conversation_packet(void *pct, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
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{
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conv_hash_t *hash = (conv_hash_t*) pct;
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const fc_hdr *fchdr=(const fc_hdr *)vip;
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add_conversation_table_data(hash, &fchdr->s_id, &fchdr->d_id, 0, 0, 1, pinfo->fd->pkt_len, &pinfo->rel_ts, &pinfo->abs_ts, &fc_ct_dissector_info, PT_NONE);
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return 1;
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}
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static const char* fc_host_get_filter_type(hostlist_talker_t* host, conv_filter_type_e filter)
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{
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if ((filter == CONV_FT_ANY_ADDRESS) && (host->myaddress.type == AT_FC))
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return "fc.id";
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return CONV_FILTER_INVALID;
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}
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static hostlist_dissector_info_t fc_host_dissector_info = {&fc_host_get_filter_type};
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static int
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fc_hostlist_packet(void *pit, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
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{
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conv_hash_t *hash = (conv_hash_t*) pit;
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const fc_hdr *fchdr=(const fc_hdr *)vip;
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/* Take two "add" passes per packet, adding for each direction, ensures that all
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packets are counted properly (even if address is sending to itself)
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XXX - this could probably be done more efficiently inside hostlist_table */
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add_hostlist_table_data(hash, &fchdr->s_id, 0, TRUE, 1, pinfo->fd->pkt_len, &fc_host_dissector_info, PT_NONE);
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add_hostlist_table_data(hash, &fchdr->d_id, 0, FALSE, 1, pinfo->fd->pkt_len, &fc_host_dissector_info, PT_NONE);
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return 1;
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}
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#define FC_NUM_PROCEDURES 256
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static void
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fcstat_init(struct register_srt* srt _U_, GArray* srt_array, srt_gui_init_cb gui_callback, void* gui_data)
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{
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srt_stat_table *fc_srt_table;
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guint32 i;
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fc_srt_table = init_srt_table("Fibre Channel Types", NULL, srt_array, FC_NUM_PROCEDURES, NULL, NULL, gui_callback, gui_data, NULL);
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for (i = 0; i < FC_NUM_PROCEDURES; i++)
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{
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gchar* tmp_str = val_to_str_wmem(NULL, i, fc_fc4_val, "Unknown(0x%02x)");
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init_srt_table_row(fc_srt_table, i, tmp_str);
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wmem_free(NULL, tmp_str);
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}
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}
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static int
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fcstat_packet(void *pss, packet_info *pinfo, epan_dissect_t *edt _U_, const void *prv)
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{
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guint i = 0;
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srt_stat_table *fc_srt_table;
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srt_data_t *data = (srt_data_t *)pss;
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const fc_hdr *fc=(const fc_hdr *)prv;
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/* we are only interested in reply packets */
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if(!(fc->fctl&FC_FCTL_EXCHANGE_RESPONDER)){
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return 0;
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}
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/* if we havnt seen the request, just ignore it */
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if ( (!fc->fc_ex) || (fc->fc_ex->first_exchange_frame==0) ){
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return 0;
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}
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fc_srt_table = g_array_index(data->srt_array, srt_stat_table*, i);
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add_srt_table_data(fc_srt_table, fc->type, &fc->fc_ex->fc_time, pinfo);
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return 1;
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}
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const value_string fc_fc4_val[] = {
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{FC_TYPE_BLS, "Basic Link Svc"},
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{FC_TYPE_ELS, "Ext Link Svc"},
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{FC_TYPE_LLCSNAP, "LLC_SNAP"},
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{FC_TYPE_IP, "IP/FC"},
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{FC_TYPE_SCSI, "FCP"},
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{FC_TYPE_FCCT, "FC_CT"},
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{FC_TYPE_SWILS, "SW_ILS"},
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{FC_TYPE_AL, "AL"},
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{FC_TYPE_SNMP, "SNMP"},
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{FC_TYPE_SB_FROM_CU, "SB-3(CU->Channel)"},
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{FC_TYPE_SB_TO_CU, "SB-3(Channel->CU)"},
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{0, NULL}
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};
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static const value_string fc_ftype_vals [] = {
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{FC_FTYPE_UNDEF , "Unknown frame"},
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{FC_FTYPE_SWILS, "SW_ILS"},
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{FC_FTYPE_IP , "IP/FC"},
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{FC_FTYPE_SCSI , "FCP"},
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{FC_FTYPE_BLS , "Basic Link Svc"},
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{FC_FTYPE_ELS , "ELS"},
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{FC_FTYPE_FCCT , "FC_CT"},
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{FC_FTYPE_LINKDATA, "Link Data"},
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{FC_FTYPE_VDO, "Video Data"},
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{FC_FTYPE_LINKCTL, "Link Ctl"},
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{FC_FTYPE_SBCCS, "SBCCS"},
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{FC_FTYPE_OHMS, "OHMS(Cisco MDS)"},
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{0, NULL}
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};
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static const value_string fc_wka_vals[] _U_ = {
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{FC_WKA_MULTICAST, "Multicast Server"},
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{FC_WKA_CLKSYNC, "Clock Sync Server"},
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{FC_WKA_KEYDIST, "Key Distribution Server"},
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{FC_WKA_ALIAS, "Alias Server"},
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{FC_WKA_QOSF, "QoS Facilitator"},
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{FC_WKA_MGMT, "Management Server"},
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{FC_WKA_TIME, "Time Server"},
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{FC_WKA_DNS, "Directory Server"},
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{FC_WKA_FABRIC_CTRLR, "Fabric Ctlr"},
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{FC_WKA_FPORT, "F_Port Server"},
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{FC_WKA_BCAST, "Broadcast ID"},
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{0, NULL}
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};
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static const value_string fc_routing_val[] = {
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{FC_RCTL_DEV_DATA, "Device_Data"},
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{FC_RCTL_ELS, "Extended Link Services"},
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{FC_RCTL_LINK_DATA, "FC-4 Link_Data"},
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{FC_RCTL_VIDEO, "Video_Data"},
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{FC_RCTL_BLS, "Basic Link Services"},
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{FC_RCTL_LINK_CTL, "Link_Control Frame"},
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{0, NULL}
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};
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static const value_string fc_iu_val[] = {
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{FC_IU_UNCATEGORIZED , "Uncategorized Data"},
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{FC_IU_SOLICITED_DATA , "Solicited Data"},
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{FC_IU_UNSOLICITED_CTL , "Unsolicited Control"},
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{FC_IU_SOLICITED_CTL , "Solicited Control"},
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{FC_IU_UNSOLICITED_DATA, "Solicited Data"},
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{FC_IU_DATA_DESCRIPTOR , "Data Descriptor"},
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{FC_IU_UNSOLICITED_CMD , "Unsolicited Command"},
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{FC_IU_CMD_STATUS , "Command Status"},
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{0, NULL}
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};
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/* For FC SOF */
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#define FC_SOFC1 0xBCB51717
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#define FC_SOFI1 0xBCB55757
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#define FC_SOFN1 0xBCB53737
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#define FC_SOFI2 0xBCB55555
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#define FC_SOFN2 0xBCB53535
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#define FC_SOFI3 0xBCB55656
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#define FC_SOFN3 0xBCB53636
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#define FC_SOFC4 0xBCB51919
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#define FC_SOFI4 0xBCB55959
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#define FC_SOFN4 0xBCB53939
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#define FC_SOFF 0xBCB55858
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#define EOFT_NEG 0xBC957575
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#define EOFT_POS 0xBCB57575
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#define EOFDT_NEG 0xBC959595
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#define EOFDT_POS 0xBCB59595
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#define EOFA_NEG 0xBC95F5F5
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#define EOFA_POS 0xBCB5F5F5
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#define EOFN_NEG 0xBC95D5D5
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#define EOFN_POS 0xBCB5D5D5
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#define EOFNI_NEG 0xBC8AD5D5
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#define EOFNI_POS 0xBCAAD5D5
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#define EOFDTI_NEG 0xBC8A9595
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#define EOFDTI_POS 0xBCAA9595
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#define EOFRT_NEG 0xBC959999
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#define EOFRT_POS 0xBCB59999
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#define EOFRTI_NEG 0xBC8A9999
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#define EOFRTI_POS 0xBCAA9999
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static const value_string fc_sof_vals[] = {
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{FC_SOFC1, "SOFc1 - SOF Connect Class 1 (Obsolete)" },
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{FC_SOFI1, "SOFi1 - SOF Initiate Class 1 (Obsolete)" },
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{FC_SOFN1, "SOFn1 - SOF Normal Class 1 (Obsolete)" },
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{FC_SOFI2, "SOFi2 - SOF Initiate Class 2" },
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{FC_SOFN2, "SOFn2 - SOF Normal Class 2" },
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{FC_SOFI3, "SOFi3 - SOF Initiate Class 3" },
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{FC_SOFN3, "SOFn3 - SOF Normal Class 3" },
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{FC_SOFC4, "SOFc4 - SOF Activate Class 4 (Obsolete)" },
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{FC_SOFI4, "SOFi4 - SOF Initiate Class 4 (Obsolete)" },
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{FC_SOFN4, "SOFn4 - SOF Normal Class 4 (Obsolete)" },
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{FC_SOFF, "SOFf - SOF Fabric" },
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{0, NULL}
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};
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static const value_string fc_eof_vals[] = {
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{EOFT_NEG, "EOFt- - EOF Terminate" },
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{EOFT_POS, "EOFt+ - EOF Terminate" },
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{EOFDT_NEG, "EOFdt- - EOF Disconnect-Terminate-Class 1 (Obsolete)" },
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{EOFDT_POS, "EOFdt+ - EOF Disconnect-Terminate-Class 1 (Obsolete)" },
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{EOFA_NEG, "EOFa- - EOF Abort" },
|
|
{EOFA_POS, "EOFa+ - EOF Abort" },
|
|
{EOFN_NEG, "EOFn- - EOF Normal" },
|
|
{EOFN_POS, "EOFn+ - EOF Normal" },
|
|
{EOFNI_NEG, "EOFni- - EOF Normal Invalid" },
|
|
{EOFNI_POS, "EOFni+ - EOF Normal Invalid" },
|
|
{EOFDTI_NEG, "EOFdti- - EOF Disconnect-Terminate-Invalid Class 1 (Obsolete)" },
|
|
{EOFDTI_POS, "EOFdti+ - EOF Disconnect-Terminate-Invalid Class 1 (Obsolete)" },
|
|
{EOFRT_NEG, "EOFrt- - EOF Remove-Terminate Class 4 (Obsolete)" },
|
|
{EOFRT_POS, "EOFrt+ - EOF Remove-Terminate Class 4 (Obsolete)" },
|
|
{EOFRTI_NEG, "EOFrti- - EOF Remove-Terminate Invalid Class 4 (Obsolete)" },
|
|
{EOFRTI_POS, "EOFrti+ - EOF Remove-Terminate Invalid Class 4 (Obsolete)" },
|
|
{0, NULL}
|
|
};
|
|
|
|
/* BA_ACC & BA_RJT are decoded in this file itself instead of a traditional
|
|
* dedicated file and dissector format because the dissector would require some
|
|
* fields of the FC_HDR such as param in some cases, type in some others, the
|
|
* lower 4 bits of r_ctl in some other cases etc. So, we decode BLS & Link Ctl
|
|
* in this file itself.
|
|
*/
|
|
static void
|
|
dissect_fc_ba_acc (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_tree *acc_tree;
|
|
int offset = 0;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BLS");
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "BA_ACC");
|
|
|
|
if (tree) {
|
|
acc_tree = proto_tree_add_subtree(tree, tvb, 0, -1, ett_fcbls, NULL, "Basic Link Svc");
|
|
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_seqid_vld, tvb, offset++, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_lastvld_seqid, tvb, offset++, 1, ENC_BIG_ENDIAN);
|
|
offset += 2; /* Skip reserved field */
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_oxid, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_rxid, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_lowseqcnt, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
proto_tree_add_item (acc_tree, hf_fc_bls_hiseqcnt, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_fc_ba_rjt (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_tree *rjt_tree;
|
|
int offset = 0;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BLS");
|
|
|
|
col_set_str(pinfo->cinfo, COL_INFO, "BA_RJT");
|
|
|
|
if (tree) {
|
|
rjt_tree = proto_tree_add_subtree(tree, tvb, 0, -1, ett_fcbls, NULL, "Basic Link Svc");
|
|
|
|
proto_tree_add_item (rjt_tree, hf_fc_bls_rjtcode, tvb, offset+1, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item (rjt_tree, hf_fc_bls_rjtdetail, tvb, offset+2, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item (rjt_tree, hf_fc_bls_vendor, tvb, offset+3, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
}
|
|
|
|
static guint8
|
|
fc_get_ftype (guint8 r_ctl, guint8 type)
|
|
{
|
|
/* A simple attempt to determine the upper level protocol based on the
|
|
* r_ctl & type fields.
|
|
*/
|
|
switch (r_ctl & 0xF0) {
|
|
case FC_RCTL_DEV_DATA:
|
|
switch (type) {
|
|
case FC_TYPE_SWILS:
|
|
if ((r_ctl == 0x2) || (r_ctl == 0x3))
|
|
return FC_FTYPE_SWILS;
|
|
else
|
|
return FC_FTYPE_UNDEF;
|
|
case FC_TYPE_IP:
|
|
return FC_FTYPE_IP;
|
|
case FC_TYPE_SCSI:
|
|
return FC_FTYPE_SCSI;
|
|
case FC_TYPE_FCCT:
|
|
return FC_FTYPE_FCCT;
|
|
case FC_TYPE_SB_FROM_CU:
|
|
case FC_TYPE_SB_TO_CU:
|
|
return FC_FTYPE_SBCCS;
|
|
case FC_TYPE_VENDOR:
|
|
return FC_FTYPE_OHMS;
|
|
default:
|
|
return FC_FTYPE_UNDEF;
|
|
}
|
|
case FC_RCTL_ELS:
|
|
if (((r_ctl & 0x0F) == 0x2) || ((r_ctl & 0x0F) == 0x3))
|
|
return FC_FTYPE_ELS;
|
|
else if (type == FC_TYPE_ELS)
|
|
return FC_FTYPE_OHMS;
|
|
else
|
|
return FC_FTYPE_UNDEF;
|
|
case FC_RCTL_LINK_DATA:
|
|
switch (type) {
|
|
case FC_TYPE_SCSI:
|
|
return FC_FTYPE_SCSI;
|
|
default:
|
|
return FC_FTYPE_LINKDATA;
|
|
}
|
|
case FC_RCTL_VIDEO:
|
|
return FC_FTYPE_VDO;
|
|
case FC_RCTL_BLS:
|
|
if (type == 0)
|
|
return FC_FTYPE_BLS;
|
|
else
|
|
return FC_FTYPE_UNDEF;
|
|
case FC_RCTL_LINK_CTL:
|
|
return FC_FTYPE_LINKCTL;
|
|
default:
|
|
return FC_FTYPE_UNDEF;
|
|
}
|
|
}
|
|
|
|
static const value_string abts_ack_vals[] = {
|
|
{0x000000, "ABTS - Cont"},
|
|
{0x000010, "ABTS - Abort"},
|
|
{0x000020, "ABTS - Stop"},
|
|
{0x000030, "ABTS - Imm Seq Retx"},
|
|
{0,NULL}
|
|
};
|
|
#if 0
|
|
static const value_string abts_not_ack_vals[] = {
|
|
{0x000000, "ABTS - Abort/MS"},
|
|
{0x000010, "ABTS - Abort/SS"},
|
|
{0x000020, "ABTS - Process/IB"},
|
|
{0x000030, "ABTS - Discard/MS/Imm Retx"},
|
|
{0,NULL}
|
|
};
|
|
#endif
|
|
static const value_string last_data_frame_vals[] = {
|
|
{0x000000, "Last Data Frame - No Info"},
|
|
{0x004000, "Last Data Frame - Seq Imm"},
|
|
{0x008000, "Last Data Frame - Seq Soon"},
|
|
{0x00c000, "Last Data Frame - Seq Delyd"},
|
|
{0,NULL}
|
|
};
|
|
static const value_string ack_0_1_vals[] = {
|
|
{0x003000, "ACK_0 Required"},
|
|
{0x002000, "ACK_0 Required"},
|
|
{0x001000, "ACK_1 Required"},
|
|
{0x000000, "no ack required"},
|
|
{0,NULL}
|
|
};
|
|
static const true_false_string tfs_fc_fctl_exchange_responder = {
|
|
"Exchange Responder",
|
|
"Exchange Originator"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_seq_recipient = {
|
|
"Seq Recipient",
|
|
"Seq Initiator"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_exchange_first = {
|
|
"Exchg First",
|
|
"NOT exchg first"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_exchange_last = {
|
|
"Exchg Last",
|
|
"NOT exchg last"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_seq_last = {
|
|
"Seq Last",
|
|
"NOT seq last"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_priority = {
|
|
"Priority",
|
|
"CS_CTL"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_transfer_seq_initiative = {
|
|
"Transfer Seq Initiative",
|
|
"NOT transfer seq initiative"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_rexmitted_seq = {
|
|
"Retransmitted Sequence",
|
|
"NOT retransmitted sequence"
|
|
};
|
|
static const true_false_string tfs_fc_fctl_rel_offset = {
|
|
"Rel Offset SET",
|
|
"rel offset NOT set"
|
|
};
|
|
|
|
/*
|
|
* Dissect the VFT header.
|
|
*/
|
|
static void
|
|
dissect_fc_vft(proto_tree *parent_tree,
|
|
tvbuff_t *tvb, int offset)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *tree;
|
|
guint8 rctl;
|
|
guint8 ver;
|
|
guint8 type;
|
|
guint8 pri;
|
|
guint16 vf_id;
|
|
guint8 hop_ct;
|
|
|
|
rctl = tvb_get_guint8(tvb, offset);
|
|
type = tvb_get_guint8(tvb, offset + 1);
|
|
ver = (type >> 6) & 3;
|
|
type = (type >> 2) & 0xf;
|
|
vf_id = tvb_get_ntohs(tvb, offset + 2);
|
|
pri = (vf_id >> 13) & 7;
|
|
vf_id = (vf_id >> 1) & 0xfff;
|
|
hop_ct = tvb_get_guint8(tvb, offset + 4);
|
|
|
|
item = proto_tree_add_uint_format_value(parent_tree, hf_fc_vft, tvb, offset,
|
|
8, vf_id, "VF_ID %d Pri %d Hop Count %d",
|
|
vf_id, pri, hop_ct);
|
|
tree = proto_item_add_subtree(item, ett_fc_vft);
|
|
proto_tree_add_uint(tree, hf_fc_vft_rctl, tvb, offset, 1, rctl);
|
|
proto_tree_add_uint(tree, hf_fc_vft_ver, tvb, offset + 1, 1, ver);
|
|
proto_tree_add_uint(tree, hf_fc_vft_type, tvb, offset + 1, 1, type);
|
|
proto_tree_add_uint(tree, hf_fc_vft_pri, tvb, offset + 2, 1, pri);
|
|
proto_tree_add_uint(tree, hf_fc_vft_vf_id, tvb, offset + 2, 2, vf_id);
|
|
proto_tree_add_uint(tree, hf_fc_vft_hop_ct, tvb, offset + 4, 1, hop_ct);
|
|
}
|
|
|
|
/* code to dissect the F_CTL bitmask */
|
|
static void
|
|
dissect_fc_fctl(packet_info *pinfo _U_, proto_tree *parent_tree, tvbuff_t *tvb, int offset)
|
|
{
|
|
static const int * flags[] = {
|
|
&hf_fc_fctl_exchange_responder,
|
|
&hf_fc_fctl_seq_recipient,
|
|
&hf_fc_fctl_exchange_first,
|
|
&hf_fc_fctl_exchange_last,
|
|
&hf_fc_fctl_seq_last,
|
|
&hf_fc_fctl_priority,
|
|
&hf_fc_fctl_transfer_seq_initiative,
|
|
&hf_fc_fctl_last_data_frame,
|
|
&hf_fc_fctl_ack_0_1,
|
|
&hf_fc_fctl_rexmitted_seq,
|
|
&hf_fc_fctl_abts_ack,
|
|
&hf_fc_fctl_rel_offset,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask_with_flags(parent_tree, tvb, offset, hf_fc_fctl,
|
|
ett_fctl, flags, ENC_BIG_ENDIAN, BMT_NO_INT);
|
|
}
|
|
|
|
static const value_string fc_bls_proto_val[] = {
|
|
{FC_BLS_NOP , "NOP"},
|
|
{FC_BLS_ABTS , "ABTS"},
|
|
{FC_BLS_RMC , "RMC"},
|
|
{FC_BLS_BAACC , "BA_ACC"},
|
|
{FC_BLS_BARJT , "BA_RJT"},
|
|
{FC_BLS_PRMT , "PRMT"},
|
|
{0, NULL}
|
|
};
|
|
|
|
static const value_string fc_els_proto_val[] = {
|
|
{0x01 , "Solicited Data"},
|
|
{0x02 , "Request"},
|
|
{0x03 , "Reply"},
|
|
{0, NULL}
|
|
};
|
|
|
|
/* Code to actually dissect the packets */
|
|
static void
|
|
dissect_fc_helper (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gboolean is_ifcp, fc_data_t* fc_data)
|
|
{
|
|
/* Set up structures needed to add the protocol subtree and manage it */
|
|
proto_item *ti, *hidden_item;
|
|
proto_tree *fc_tree;
|
|
tvbuff_t *next_tvb;
|
|
int offset = 0, next_offset;
|
|
int vft_offset = -1;
|
|
gboolean is_lastframe_inseq, is_1frame_inseq, is_exchg_resp = 0;
|
|
fragment_head *fcfrag_head;
|
|
guint32 frag_id, frag_size;
|
|
guint8 df_ctl, seq_id;
|
|
guint32 f_ctl;
|
|
address addr;
|
|
|
|
guint32 param, exchange_key;
|
|
guint16 real_seqcnt;
|
|
guint8 ftype;
|
|
|
|
fc_hdr* fchdr = wmem_new(wmem_packet_scope(), fc_hdr); /* Needed by conversations, not just tap */
|
|
fc_exchange_t *fc_ex;
|
|
fc_conv_data_t *fc_conv_data=NULL;
|
|
|
|
conversation_t *conversation;
|
|
fcseq_conv_data_t *cdata;
|
|
fcseq_conv_key_t ckey, *req_key;
|
|
|
|
/* Make entries in Protocol column and Info column on summary display */
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC");
|
|
|
|
fchdr->r_ctl = tvb_get_guint8 (tvb, offset);
|
|
fchdr->fc_ex = NULL;
|
|
|
|
/*
|
|
* If the frame contains a VFT (virtual fabric tag), decode it
|
|
* as a separate header before the FC frame header.
|
|
*
|
|
* This used to be called the Cisco-proprietary EISL field, but is now
|
|
* standardized in FC-FS-2. See section 10.2.4.
|
|
*/
|
|
if (fchdr->r_ctl == FC_RCTL_VFT) {
|
|
vft_offset = offset;
|
|
offset += 8;
|
|
fchdr->r_ctl = tvb_get_guint8 (tvb, offset);
|
|
}
|
|
|
|
/* Each fc endpoint pair gets its own TCP session in iFCP but
|
|
* the src/dst ids are undefined(==semi-random) in the FC header.
|
|
* This means we can no track conversations for FC over iFCP by using
|
|
* the FC src/dst addresses.
|
|
* For iFCP: Do not update the pinfo src/dst struct and let it remain
|
|
* being tcpip src/dst so that request/response matching in the FCP layer
|
|
* will use ip addresses instead and still work.
|
|
*/
|
|
if(!is_ifcp){
|
|
set_address_tvb (&pinfo->dst, AT_FC, 3, tvb, offset+1);
|
|
set_address_tvb (&pinfo->src, AT_FC, 3, tvb, offset+5);
|
|
pinfo->srcport=0;
|
|
pinfo->destport=0;
|
|
}
|
|
set_address(&fchdr->d_id, pinfo->dst.type, pinfo->dst.len, pinfo->dst.data);
|
|
set_address(&fchdr->s_id, pinfo->src.type, pinfo->src.len, pinfo->src.data);
|
|
|
|
fchdr->cs_ctl = tvb_get_guint8 (tvb, offset+4);
|
|
fchdr->type = tvb_get_guint8 (tvb, offset+8);
|
|
fchdr->fctl=tvb_get_ntoh24(tvb,offset+9);
|
|
fchdr->seqcnt = tvb_get_ntohs (tvb, offset+14);
|
|
fchdr->oxid=tvb_get_ntohs(tvb,offset+16);
|
|
fchdr->rxid=tvb_get_ntohs(tvb,offset+18);
|
|
fchdr->relative_offset=0;
|
|
param = tvb_get_ntohl (tvb, offset+20);
|
|
seq_id = tvb_get_guint8 (tvb, offset+12);
|
|
|
|
pinfo->ptype = PT_EXCHG;
|
|
|
|
/* set up a conversation and conversation data */
|
|
/* TODO treat the fc address s_id==00.00.00 as a wildcard matching anything */
|
|
conversation=find_or_create_conversation(pinfo);
|
|
fc_conv_data=(fc_conv_data_t *)conversation_get_proto_data(conversation, proto_fc);
|
|
if(!fc_conv_data){
|
|
fc_conv_data=wmem_new(wmem_file_scope(), fc_conv_data_t);
|
|
fc_conv_data->exchanges=wmem_tree_new(wmem_file_scope());
|
|
fc_conv_data->luns=wmem_tree_new(wmem_file_scope());
|
|
conversation_add_proto_data(conversation, proto_fc, fc_conv_data);
|
|
}
|
|
|
|
/* Set up LUN data. OXID + LUN make up unique exchanges, but LUN is populated in subdissectors
|
|
and not necessarily in every frame. Stub it here for now */
|
|
fchdr->lun = 0xFFFF;
|
|
if (!pinfo->fd->flags.visited) {
|
|
fchdr->lun = (guint16)GPOINTER_TO_UINT(wmem_tree_lookup32(fc_conv_data->luns, fchdr->oxid));
|
|
}
|
|
|
|
/* In the interest of speed, if "tree" is NULL, don't do any work not
|
|
necessary to generate protocol tree items. */
|
|
ti = proto_tree_add_protocol_format (tree, proto_fc, tvb, offset, FC_HEADER_SIZE, "Fibre Channel");
|
|
fc_tree = proto_item_add_subtree (ti, ett_fc);
|
|
|
|
/*is_ack = ((fchdr->r_ctl == 0xC0) || (fchdr->r_ctl == 0xC1));*/
|
|
|
|
/* There are two ways to determine if this is the first frame of a
|
|
* sequence. Either:
|
|
* (i) The SOF bits indicate that this is the first frame OR
|
|
* (ii) This is an SOFf frame and seqcnt is 0.
|
|
*/
|
|
is_1frame_inseq = (((fc_data->sof_eof & FC_DATA_SOF_FIRST_FRAME) == FC_DATA_SOF_FIRST_FRAME) ||
|
|
(((fc_data->sof_eof & FC_DATA_SOF_SOFF) == FC_DATA_SOF_SOFF) &&
|
|
(fchdr->seqcnt == 0)));
|
|
|
|
is_lastframe_inseq = ((fc_data->sof_eof & FC_DATA_EOF_LAST_FRAME) == FC_DATA_EOF_LAST_FRAME);
|
|
|
|
is_lastframe_inseq |= fchdr->fctl & FC_FCTL_SEQ_LAST;
|
|
/*is_valid_frame = ((pinfo->sof_eof & 0x40) == 0x40);*/
|
|
|
|
ftype = fc_get_ftype (fchdr->r_ctl, fchdr->type);
|
|
|
|
col_add_str (pinfo->cinfo, COL_INFO, val_to_str (ftype, fc_ftype_vals,
|
|
"Unknown Type (0x%x)"));
|
|
|
|
if (ftype == FC_FTYPE_LINKCTL)
|
|
col_append_fstr (pinfo->cinfo, COL_INFO, ", %s",
|
|
val_to_str ((fchdr->r_ctl & 0x0F),
|
|
fc_lctl_proto_val,
|
|
"LCTL 0x%x"));
|
|
|
|
if (vft_offset >= 0) {
|
|
dissect_fc_vft(fc_tree, tvb, vft_offset);
|
|
}
|
|
switch (fchdr->r_ctl & 0xF0) {
|
|
|
|
case FC_RCTL_DEV_DATA:
|
|
case FC_RCTL_LINK_DATA:
|
|
case FC_RCTL_VIDEO:
|
|
/* the lower 4 bits of R_CTL are the information category */
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/%s)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
val_to_str ((fchdr->r_ctl & 0x0F),
|
|
fc_iu_val, "0x%x"));
|
|
break;
|
|
|
|
case FC_RCTL_LINK_CTL:
|
|
/* the lower 4 bits of R_CTL indicate the type of link ctl frame */
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/%s)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
val_to_str ((fchdr->r_ctl & 0x0F),
|
|
fc_lctl_proto_val, "0x%x"));
|
|
break;
|
|
|
|
case FC_RCTL_BLS:
|
|
switch (fchdr->type) {
|
|
|
|
case 0x00:
|
|
/* the lower 4 bits of R_CTL indicate the type of BLS frame */
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/%s)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
val_to_str ((fchdr->r_ctl & 0x0F),
|
|
fc_bls_proto_val, "0x%x"));
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/0x%x)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
fchdr->r_ctl & 0x0F);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FC_RCTL_ELS:
|
|
switch (fchdr->type) {
|
|
|
|
case 0x01:
|
|
/* the lower 4 bits of R_CTL indicate the type of ELS frame */
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/%s)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
val_to_str ((fchdr->r_ctl & 0x0F),
|
|
fc_els_proto_val, "0x%x"));
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/0x%x)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
fchdr->r_ctl & 0x0F);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_rctl, tvb, offset,
|
|
FC_RCTL_SIZE, fchdr->r_ctl,
|
|
"0x%x(%s/0x%x)",
|
|
fchdr->r_ctl,
|
|
val_to_str ((fchdr->r_ctl & 0xF0),
|
|
fc_routing_val, "0x%x"),
|
|
fchdr->r_ctl & 0x0F);
|
|
break;
|
|
}
|
|
|
|
hidden_item = proto_tree_add_uint (fc_tree, hf_fc_ftype, tvb, offset, 1,
|
|
ftype);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
/* XXX - use "fc_wka_vals[]" on this? */
|
|
set_address(&addr, AT_FC, 3, fchdr->d_id.data);
|
|
proto_tree_add_item(fc_tree, hf_fc_did, tvb, offset+1, 3, ENC_NA);
|
|
hidden_item = proto_tree_add_item (fc_tree, hf_fc_id, tvb, offset+1, 3, ENC_NA);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
proto_tree_add_uint (fc_tree, hf_fc_csctl, tvb, offset+4, 1, fchdr->cs_ctl);
|
|
|
|
/* XXX - use "fc_wka_vals[]" on this? */
|
|
set_address(&addr, AT_FC, 3, fchdr->s_id.data);
|
|
proto_tree_add_item(fc_tree, hf_fc_sid, tvb, offset+5, 3, ENC_NA);
|
|
hidden_item = proto_tree_add_item (fc_tree, hf_fc_id, tvb, offset+5, 3, ENC_NA);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
if (ftype == FC_FTYPE_LINKCTL) {
|
|
if (((fchdr->r_ctl & 0x0F) == FC_LCTL_FBSYB) ||
|
|
((fchdr->r_ctl & 0x0F) == FC_LCTL_FBSYL)) {
|
|
/* for F_BSY frames, the upper 4 bits of the type field specify the
|
|
* reason for the BSY.
|
|
*/
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_type, tvb,
|
|
offset+8, FC_TYPE_SIZE,
|
|
fchdr->type,"0x%x(%s)", fchdr->type,
|
|
fclctl_get_typestr ((guint8) (fchdr->r_ctl & 0x0F),
|
|
fchdr->type));
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_type, tvb, offset+8, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_type, tvb, offset+8, 1, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
|
|
dissect_fc_fctl(pinfo, fc_tree, tvb, offset+9);
|
|
f_ctl = tvb_get_ntoh24(tvb, offset+9);
|
|
|
|
|
|
proto_tree_add_item (fc_tree, hf_fc_seqid, tvb, offset+12, 1, ENC_BIG_ENDIAN);
|
|
|
|
df_ctl = tvb_get_guint8(tvb, offset+13);
|
|
|
|
proto_tree_add_uint (fc_tree, hf_fc_dfctl, tvb, offset+13, 1, df_ctl);
|
|
proto_tree_add_uint (fc_tree, hf_fc_seqcnt, tvb, offset+14, 2, fchdr->seqcnt);
|
|
proto_tree_add_uint (fc_tree, hf_fc_oxid, tvb, offset+16, 2, fchdr->oxid);
|
|
proto_tree_add_uint (fc_tree, hf_fc_rxid, tvb, offset+18, 2, fchdr->rxid);
|
|
|
|
if (ftype == FC_FTYPE_LINKCTL) {
|
|
if (((fchdr->r_ctl & 0x0F) == FC_LCTL_FRJT) ||
|
|
((fchdr->r_ctl & 0x0F) == FC_LCTL_PRJT) ||
|
|
((fchdr->r_ctl & 0x0F) == FC_LCTL_PBSY)) {
|
|
/* In all these cases of Link Ctl frame, the parameter field
|
|
* encodes the detailed error message
|
|
*/
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_param, tvb,
|
|
offset+20, 4, param,
|
|
"0x%x(%s)", param,
|
|
fclctl_get_paramstr ((fchdr->r_ctl & 0x0F),
|
|
param));
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_param, tvb, offset+20, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
} else if (ftype == FC_FTYPE_BLS) {
|
|
if ((fchdr->r_ctl & 0x0F) == FC_BLS_ABTS) {
|
|
proto_tree_add_uint_format_value(fc_tree, hf_fc_param, tvb,
|
|
offset+20, 4, param,
|
|
"0x%x(%s)", param,
|
|
((param & 0x0F) == 1 ? "Abort Sequence" :
|
|
"Abort Exchange"));
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_param, tvb, offset+20,
|
|
4, ENC_BIG_ENDIAN);
|
|
}
|
|
} else if (ftype == FC_FTYPE_SCSI ) {
|
|
if (f_ctl&FC_FCTL_REL_OFFSET){
|
|
proto_tree_add_item (fc_tree, hf_fc_relative_offset, tvb, offset+20, 4, ENC_BIG_ENDIAN);
|
|
fchdr->relative_offset=tvb_get_ntohl(tvb, offset+20);
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_param, tvb, offset+20, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
} else {
|
|
proto_tree_add_item (fc_tree, hf_fc_param, tvb, offset+20, 4, ENC_BIG_ENDIAN);
|
|
}
|
|
|
|
/* Skip the Frame_Header */
|
|
next_offset = offset + FC_HEADER_SIZE;
|
|
|
|
/* Network_Header present? */
|
|
if (df_ctl & FC_DFCTL_NH) {
|
|
proto_tree_add_item(fc_tree, hf_fc_nh_da, tvb, next_offset, 8, ENC_NA);
|
|
proto_tree_add_item(fc_tree, hf_fc_nh_sa, tvb, next_offset+8, 8, ENC_NA);
|
|
next_offset += 16;
|
|
}
|
|
|
|
/* XXX - handle Association_Header and Device_Header here */
|
|
|
|
if (ftype == FC_FTYPE_LINKCTL) {
|
|
/* ACK_1 frames and other LINK_CTL frames echo the last seq bit if the
|
|
* packet they're ack'ing did not have it set. So, we'll incorrectly
|
|
* flag them as being fragmented when they're not. This fixes the
|
|
* problem
|
|
*/
|
|
is_lastframe_inseq = TRUE;
|
|
} else {
|
|
is_exchg_resp = (f_ctl & FC_FCTL_EXCHANGE_RESPONDER) != 0;
|
|
}
|
|
|
|
if (tvb_reported_length (tvb) < FC_HEADER_SIZE) {
|
|
proto_tree_add_expert(fc_tree, pinfo, &ei_short_hdr,
|
|
tvb, 0, tvb_reported_length(tvb));
|
|
return;
|
|
}
|
|
|
|
frag_size = tvb_reported_length (tvb)-FC_HEADER_SIZE;
|
|
|
|
/* If there is an MDS header, we need to subtract the MDS trailer size
|
|
* Link Ctl, BLS & OHMS are all (encap header + FC Header + encap trailer)
|
|
* and are never fragmented and so we ignore the frag_size assertion for
|
|
* these frames.
|
|
*/
|
|
if ((fc_data->ethertype == ETHERTYPE_UNK) || (fc_data->ethertype == ETHERTYPE_FCFT)) {
|
|
if ((frag_size < MDSHDR_TRAILER_SIZE) ||
|
|
((frag_size == MDSHDR_TRAILER_SIZE) && (ftype != FC_FTYPE_LINKCTL) &&
|
|
(ftype != FC_FTYPE_BLS) && (ftype != FC_FTYPE_OHMS))) {
|
|
proto_tree_add_expert(fc_tree, pinfo, &ei_short_hdr,
|
|
tvb, FC_HEADER_SIZE, frag_size);
|
|
return;
|
|
}
|
|
frag_size -= MDSHDR_TRAILER_SIZE;
|
|
} else if (fc_data->ethertype == ETHERTYPE_BRDWALK) {
|
|
if ((frag_size <= 8) ||
|
|
((frag_size == MDSHDR_TRAILER_SIZE) && (ftype != FC_FTYPE_LINKCTL) &&
|
|
(ftype != FC_FTYPE_BLS) && (ftype != FC_FTYPE_OHMS))) {
|
|
proto_tree_add_expert(fc_tree, pinfo, &ei_short_hdr,
|
|
tvb, FC_HEADER_SIZE, frag_size);
|
|
return;
|
|
}
|
|
frag_size -= 8; /* 4 byte of FC CRC +
|
|
4 bytes of error+EOF = 8 bytes */
|
|
}
|
|
|
|
if (!is_lastframe_inseq) {
|
|
/* Show this only as a fragmented FC frame */
|
|
col_append_str (pinfo->cinfo, COL_INFO, " (Fragmented)");
|
|
}
|
|
|
|
/* If this is a fragment, attempt to check if fully reassembled frame is
|
|
* present, if we're configured to reassemble.
|
|
*/
|
|
if ((ftype != FC_FTYPE_LINKCTL) && (ftype != FC_FTYPE_BLS) &&
|
|
(ftype != FC_FTYPE_OHMS) &&
|
|
(!is_lastframe_inseq || !is_1frame_inseq) && fc_reassemble &&
|
|
tvb_bytes_exist(tvb, FC_HEADER_SIZE, frag_size) && tree) {
|
|
/* Add this to the list of fragments */
|
|
|
|
/* In certain cases such as FICON, the SEQ_CNT is streaming
|
|
* i.e. continuously increasing. So, zero does not signify the
|
|
* first frame of the sequence. To fix this, we need to save the
|
|
* SEQ_CNT of the first frame in sequence and use this value to
|
|
* determine the actual offset into a frame.
|
|
*/
|
|
ckey.conv_idx = conversation->index;
|
|
|
|
cdata = (fcseq_conv_data_t *)g_hash_table_lookup (fcseq_req_hash,
|
|
&ckey);
|
|
|
|
if (is_1frame_inseq) {
|
|
if (cdata) {
|
|
/* Since we never free the memory used by an exchange, this maybe a
|
|
* case of another request using the same exchange as a previous
|
|
* req.
|
|
*/
|
|
cdata->seq_cnt = fchdr->seqcnt;
|
|
}
|
|
else {
|
|
req_key = wmem_new(wmem_file_scope(), fcseq_conv_key_t);
|
|
req_key->conv_idx = conversation->index;
|
|
|
|
cdata = wmem_new(wmem_file_scope(), fcseq_conv_data_t);
|
|
cdata->seq_cnt = fchdr->seqcnt;
|
|
|
|
g_hash_table_insert (fcseq_req_hash, req_key, cdata);
|
|
}
|
|
real_seqcnt = 0;
|
|
}
|
|
else if (cdata != NULL) {
|
|
real_seqcnt = fchdr->seqcnt - cdata->seq_cnt ;
|
|
}
|
|
else {
|
|
real_seqcnt = fchdr->seqcnt;
|
|
}
|
|
|
|
/* Verify that this is a valid fragment */
|
|
if (is_lastframe_inseq && !is_1frame_inseq && !real_seqcnt) {
|
|
/* This is a frame that purports to be the last frame in a
|
|
* sequence, is not the first frame, but has a seqcnt that is
|
|
* 0. This is a bogus frame, don't attempt to reassemble it.
|
|
*/
|
|
next_tvb = tvb_new_subset_remaining (tvb, next_offset);
|
|
col_append_str (pinfo->cinfo, COL_INFO, " (Bogus Fragment)");
|
|
} else {
|
|
|
|
frag_id = ((fchdr->oxid << 16) ^ seq_id) | is_exchg_resp ;
|
|
|
|
/* We assume that all frames are of the same max size */
|
|
fcfrag_head = fragment_add (&fc_reassembly_table,
|
|
tvb, FC_HEADER_SIZE,
|
|
pinfo, frag_id, NULL,
|
|
real_seqcnt * fc_max_frame_size,
|
|
frag_size,
|
|
!is_lastframe_inseq);
|
|
|
|
if (fcfrag_head) {
|
|
next_tvb = tvb_new_chain(tvb, fcfrag_head->tvb_data);
|
|
|
|
/* Add the defragmented data to the data source list. */
|
|
add_new_data_source(pinfo, next_tvb, "Reassembled FC");
|
|
|
|
hidden_item = proto_tree_add_boolean (fc_tree, hf_fc_reassembled,
|
|
tvb, offset+9, 1, 1);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
}
|
|
else {
|
|
hidden_item = proto_tree_add_boolean (fc_tree, hf_fc_reassembled,
|
|
tvb, offset+9, 1, 0);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
next_tvb = tvb_new_subset_remaining (tvb, next_offset);
|
|
call_dissector (data_handle, next_tvb, pinfo, tree);
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
hidden_item = proto_tree_add_boolean (fc_tree, hf_fc_reassembled,
|
|
tvb, offset+9, 1, 0);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
next_tvb = tvb_new_subset_remaining (tvb, next_offset);
|
|
}
|
|
|
|
if ((ftype != FC_FTYPE_LINKCTL) && (ftype != FC_FTYPE_BLS)) {
|
|
/* If relative offset is used, only dissect the pdu with
|
|
* offset 0 (param) */
|
|
if( (fchdr->fctl&FC_FCTL_REL_OFFSET) && param ){
|
|
call_dissector (data_handle, next_tvb, pinfo, tree);
|
|
} else {
|
|
if (!dissector_try_uint_new (fcftype_dissector_table, ftype,
|
|
next_tvb, pinfo, tree, FALSE, fchdr)) {
|
|
call_dissector (data_handle, next_tvb, pinfo, tree);
|
|
}
|
|
}
|
|
} else if (ftype == FC_FTYPE_BLS) {
|
|
if ((fchdr->r_ctl & 0x0F) == FC_BLS_BAACC) {
|
|
dissect_fc_ba_acc (next_tvb, pinfo, tree);
|
|
} else if ((fchdr->r_ctl & 0x0F) == FC_BLS_BARJT) {
|
|
dissect_fc_ba_rjt (next_tvb, pinfo, tree);
|
|
} else if ((fchdr->r_ctl & 0x0F) == FC_BLS_ABTS) {
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "BLS");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "ABTS");
|
|
}
|
|
}
|
|
|
|
/* Lun is only populated by subdissectors, and subsequent packets assume the same lun.
|
|
The only way that consistently works is to save the lun on the first pass (with OXID as
|
|
key) when packets are guaranteed to be parsed consecutively */
|
|
|
|
/* Set up LUN data */
|
|
if (!pinfo->fd->flags.visited) {
|
|
wmem_tree_insert32(fc_conv_data->luns, fchdr->oxid, GUINT_TO_POINTER((guint)fchdr->lun));
|
|
}
|
|
|
|
exchange_key = ((fchdr->oxid & 0xFFFF) | ((fchdr->lun << 16) & 0xFFFF0000));
|
|
|
|
/* set up the exchange data */
|
|
/* XXX we should come up with a way to handle when the 16bit oxid wraps
|
|
* so that large traces will work
|
|
*/
|
|
fc_ex=(fc_exchange_t*)wmem_tree_lookup32(fc_conv_data->exchanges, exchange_key);
|
|
if(!fc_ex){
|
|
fc_ex=wmem_new(wmem_file_scope(), fc_exchange_t);
|
|
fc_ex->first_exchange_frame=0;
|
|
fc_ex->last_exchange_frame=0;
|
|
fc_ex->fc_time=pinfo->abs_ts;
|
|
|
|
wmem_tree_insert32(fc_conv_data->exchanges, exchange_key, fc_ex);
|
|
}
|
|
|
|
fchdr->fc_ex = fc_ex;
|
|
|
|
/* populate the exchange struct */
|
|
if(!pinfo->fd->flags.visited){
|
|
if(fchdr->fctl&FC_FCTL_EXCHANGE_FIRST){
|
|
fc_ex->first_exchange_frame=pinfo->num;
|
|
fc_ex->fc_time = pinfo->abs_ts;
|
|
}
|
|
if(fchdr->fctl&FC_FCTL_EXCHANGE_LAST){
|
|
fc_ex->last_exchange_frame=pinfo->num;
|
|
}
|
|
}
|
|
|
|
/* put some nice exchange data in the tree */
|
|
if(!(fchdr->fctl&FC_FCTL_EXCHANGE_FIRST)){
|
|
proto_item *it;
|
|
it=proto_tree_add_uint(fc_tree, hf_fc_exchange_first_frame, tvb, 0, 0, fc_ex->first_exchange_frame);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
if(fchdr->fctl&FC_FCTL_EXCHANGE_LAST){
|
|
nstime_t delta_ts;
|
|
nstime_delta(&delta_ts, &pinfo->abs_ts, &fc_ex->fc_time);
|
|
it=proto_tree_add_time(ti, hf_fc_time, tvb, 0, 0, &delta_ts);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
}
|
|
}
|
|
if(!(fchdr->fctl&FC_FCTL_EXCHANGE_LAST)){
|
|
proto_item *it;
|
|
it=proto_tree_add_uint(fc_tree, hf_fc_exchange_last_frame, tvb, 0, 0, fc_ex->last_exchange_frame);
|
|
PROTO_ITEM_SET_GENERATED(it);
|
|
}
|
|
|
|
tap_queue_packet(fc_tap, pinfo, fchdr);
|
|
}
|
|
|
|
static int
|
|
dissect_fc (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
fc_data_t* fc_data = (fc_data_t*)data;
|
|
|
|
if (!fc_data)
|
|
return 0;
|
|
|
|
dissect_fc_helper (tvb, pinfo, tree, FALSE, fc_data);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_fc_wtap (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
fc_data_t fc_data;
|
|
|
|
fc_data.ethertype = ETHERTYPE_UNK;
|
|
fc_data.sof_eof = 0;
|
|
|
|
dissect_fc_helper (tvb, pinfo, tree, FALSE, &fc_data);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_fc_ifcp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
fc_data_t* fc_data = (fc_data_t*)data;
|
|
|
|
if (!fc_data)
|
|
return 0;
|
|
|
|
dissect_fc_helper (tvb, pinfo, tree, TRUE, fc_data);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_fcsof(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) {
|
|
|
|
proto_item *it = NULL;
|
|
proto_tree *fcsof_tree = NULL;
|
|
tvbuff_t *next_tvb, *checksum_tvb;
|
|
guint32 sof = 0;
|
|
guint32 crc = 0;
|
|
guint32 crc_computed = 0;
|
|
guint32 eof = 0;
|
|
gint crc_offset = 0;
|
|
gint eof_offset = 0;
|
|
gint sof_offset = 0;
|
|
const gint FCSOF_TRAILER_LEN = 8;
|
|
const gint FCSOF_HEADER_LEN = 4;
|
|
gint frame_len_for_checksum = 0;
|
|
fc_data_t fc_data;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC");
|
|
|
|
crc_offset = tvb_reported_length(tvb) - FCSOF_TRAILER_LEN;
|
|
eof_offset = crc_offset + 4;
|
|
sof_offset = 0;
|
|
|
|
/* Get SOF */
|
|
sof = tvb_get_ntohl(tvb, 0);
|
|
|
|
/* GET CRC */
|
|
crc = tvb_get_ntohl(tvb, crc_offset);
|
|
|
|
/* GET Computed CRC */
|
|
frame_len_for_checksum = crc_offset - FCSOF_HEADER_LEN;
|
|
checksum_tvb = tvb_new_subset_length(tvb, 4, frame_len_for_checksum);
|
|
crc_computed = crc32_802_tvb(checksum_tvb, frame_len_for_checksum);
|
|
|
|
/* Get EOF */
|
|
eof = tvb_get_ntohl(tvb, eof_offset);
|
|
|
|
it = proto_tree_add_protocol_format(tree, proto_fcsof, tvb, 0,
|
|
4, "Fibre Channel Delimiter: SOF: %s EOF: %s",
|
|
val_to_str(sof, fc_sof_vals, "0x%x"),
|
|
val_to_str(eof, fc_eof_vals, "0x%x"));
|
|
|
|
fcsof_tree = proto_item_add_subtree(it, ett_fcsof);
|
|
|
|
proto_tree_add_uint(fcsof_tree, hf_fcsof, tvb, sof_offset, 4, sof);
|
|
|
|
if (crc == crc_computed) {
|
|
proto_tree_add_uint_format_value(fcsof_tree, hf_fccrc, tvb,
|
|
crc_offset, 4, crc,
|
|
"%8.8x [valid]", crc);
|
|
} else {
|
|
it = proto_tree_add_uint_format_value(fcsof_tree, hf_fccrc, tvb,
|
|
crc_offset, 4, crc,
|
|
"%8.8x [error: should be %8.8x]",
|
|
crc, crc_computed);
|
|
|
|
expert_add_info_format(pinfo, it, &ei_fccrc,
|
|
"Bad FC CRC %8.8x %8.x",
|
|
crc, crc_computed);
|
|
}
|
|
|
|
proto_tree_add_uint(fcsof_tree, hf_fceof, tvb, eof_offset, 4, eof);
|
|
|
|
next_tvb = tvb_new_subset_remaining(tvb, 4);
|
|
|
|
fc_data.ethertype = 0;
|
|
fc_data.sof_eof = 0;
|
|
if (sof == FC_SOFI2 || sof == FC_SOFI3) {
|
|
fc_data.sof_eof = FC_DATA_SOF_FIRST_FRAME;
|
|
} else if (sof == FC_SOFF) {
|
|
fc_data.sof_eof = FC_DATA_SOF_SOFF;
|
|
}
|
|
|
|
if (eof == EOFT_POS || eof == EOFT_NEG) {
|
|
fc_data.sof_eof |= FC_DATA_EOF_LAST_FRAME;
|
|
} else if (eof == EOFDTI_NEG || eof == EOFDTI_POS) {
|
|
fc_data.sof_eof |= FC_DATA_EOF_INVALID;
|
|
}
|
|
|
|
/* Call FC dissector */
|
|
call_dissector_with_data(fc_handle, next_tvb, pinfo, tree, &fc_data);
|
|
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_fc(void)
|
|
{
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
|
static hf_register_info hf[] = {
|
|
{ &hf_fc_rctl,
|
|
{ "R_CTL", "fc.r_ctl", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
{ &hf_fc_ftype,
|
|
{"Frame type", "fc.ftype", FT_UINT8, BASE_HEX, VALS(fc_ftype_vals),
|
|
0x0, "Derived Type", HFILL}},
|
|
{ &hf_fc_did,
|
|
{ "Dest Addr", "fc.d_id", FT_BYTES, SEP_DOT, NULL, 0x0,
|
|
"Destination Address", HFILL}},
|
|
{ &hf_fc_csctl,
|
|
{"CS_CTL", "fc.cs_ctl", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL}},
|
|
{ &hf_fc_sid,
|
|
{"Src Addr", "fc.s_id", FT_BYTES, SEP_DOT, NULL, 0x0,
|
|
"Source Address", HFILL}},
|
|
{ &hf_fc_id,
|
|
{"Addr", "fc.id", FT_BYTES, SEP_DOT, NULL, 0x0,
|
|
"Source or Destination Address", HFILL}},
|
|
{ &hf_fc_type,
|
|
{"Type", "fc.type", FT_UINT8, BASE_HEX, VALS (fc_fc4_val), 0x0,
|
|
NULL, HFILL}},
|
|
{ &hf_fc_fctl,
|
|
{"F_CTL", "fc.f_ctl", FT_UINT24, BASE_HEX, NULL, 0x0, NULL, HFILL}},
|
|
{ &hf_fc_seqid,
|
|
{"SEQ_ID", "fc.seq_id", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Sequence ID", HFILL}},
|
|
{ &hf_fc_dfctl,
|
|
{"DF_CTL", "fc.df_ctl", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}},
|
|
{ &hf_fc_seqcnt,
|
|
{"SEQ_CNT", "fc.seq_cnt", FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Sequence Count", HFILL}},
|
|
{ &hf_fc_oxid,
|
|
{"OX_ID", "fc.ox_id", FT_UINT16, BASE_HEX, NULL, 0x0, "Originator ID",
|
|
HFILL}},
|
|
{ &hf_fc_rxid,
|
|
{"RX_ID", "fc.rx_id", FT_UINT16, BASE_HEX, NULL, 0x0, "Receiver ID",
|
|
HFILL}},
|
|
{ &hf_fc_param,
|
|
{"Parameter", "fc.parameter", FT_UINT32, BASE_HEX, NULL, 0x0, NULL,
|
|
HFILL}},
|
|
|
|
{ &hf_fc_reassembled,
|
|
{"Reassembled Frame", "fc.reassembled", FT_BOOLEAN, BASE_NONE, NULL,
|
|
0x0, NULL, HFILL}},
|
|
{ &hf_fc_nh_da,
|
|
{"Network DA", "fc.nethdr.da", FT_FCWWN, BASE_NONE, NULL,
|
|
0x0, NULL, HFILL}},
|
|
{ &hf_fc_nh_sa,
|
|
{"Network SA", "fc.nethdr.sa", FT_FCWWN, BASE_NONE, NULL,
|
|
0x0, NULL, HFILL}},
|
|
|
|
/* Basic Link Svc field definitions */
|
|
{ &hf_fc_bls_seqid_vld,
|
|
{"SEQID Valid", "fc.bls_seqidvld", FT_UINT8, BASE_HEX,
|
|
VALS (fc_bls_seqid_val), 0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_lastvld_seqid,
|
|
{"Last Valid SEQID", "fc.bls_lastseqid", FT_UINT8, BASE_HEX, NULL,
|
|
0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_oxid,
|
|
{"OXID", "fc.bls_oxid", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_rxid,
|
|
{"RXID", "fc.bls_rxid", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_lowseqcnt,
|
|
{"Low SEQCNT", "fc.bls_lseqcnt", FT_UINT16, BASE_HEX, NULL, 0x0, NULL,
|
|
HFILL}},
|
|
{ &hf_fc_bls_hiseqcnt,
|
|
{"High SEQCNT", "fc.bls_hseqcnt", FT_UINT16, BASE_HEX, NULL, 0x0, NULL,
|
|
HFILL}},
|
|
{ &hf_fc_bls_rjtcode,
|
|
{"Reason", "fc.bls_reason", FT_UINT8, BASE_HEX, VALS(fc_bls_barjt_val),
|
|
0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_rjtdetail,
|
|
{"Reason Explanation", "fc.bls_rjtdetail", FT_UINT8, BASE_HEX,
|
|
VALS (fc_bls_barjt_det_val), 0x0, NULL, HFILL}},
|
|
{ &hf_fc_bls_vendor,
|
|
{"Vendor Unique Reason", "fc.bls_vnduniq", FT_UINT8, BASE_HEX, NULL,
|
|
0x0, NULL, HFILL}},
|
|
{ &hf_fc_fctl_exchange_responder,
|
|
{"ExgRpd", "fc.fctl.exchange_responder", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_exchange_responder),
|
|
FC_FCTL_EXCHANGE_RESPONDER, "Exchange Responder?", HFILL}},
|
|
{ &hf_fc_fctl_seq_recipient,
|
|
{"SeqRec", "fc.fctl.seq_recipient", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_seq_recipient),
|
|
FC_FCTL_SEQ_RECIPIENT, "Seq Recipient?", HFILL}},
|
|
{ &hf_fc_fctl_exchange_first,
|
|
{"ExgFst", "fc.fctl.exchange_first", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_exchange_first),
|
|
FC_FCTL_EXCHANGE_FIRST, "First Exchange?", HFILL}},
|
|
{ &hf_fc_fctl_exchange_last,
|
|
{"ExgLst", "fc.fctl.exchange_last", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_exchange_last),
|
|
FC_FCTL_EXCHANGE_LAST, "Last Exchange?", HFILL}},
|
|
{ &hf_fc_fctl_seq_last,
|
|
{"SeqLst", "fc.fctl.seq_last", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_seq_last),
|
|
FC_FCTL_SEQ_LAST, "Last Sequence?", HFILL}},
|
|
{ &hf_fc_fctl_priority,
|
|
{"Pri", "fc.fctl.priority", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_priority),
|
|
FC_FCTL_PRIORITY, "Priority", HFILL}},
|
|
{ &hf_fc_fctl_transfer_seq_initiative,
|
|
{"TSI", "fc.fctl.transfer_seq_initiative", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_transfer_seq_initiative),
|
|
FC_FCTL_TRANSFER_SEQ_INITIATIVE, "Transfer Seq Initiative", HFILL}},
|
|
{ &hf_fc_fctl_rexmitted_seq,
|
|
{"RetSeq", "fc.fctl.rexmitted_seq", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_rexmitted_seq),
|
|
FC_FCTL_REXMITTED_SEQ, "Retransmitted Sequence", HFILL}},
|
|
{ &hf_fc_fctl_rel_offset,
|
|
{"RelOff", "fc.fctl.rel_offset", FT_BOOLEAN, 24, TFS(&tfs_fc_fctl_rel_offset),
|
|
FC_FCTL_REL_OFFSET, "rel offset", HFILL}},
|
|
{ &hf_fc_fctl_last_data_frame,
|
|
{"LDF", "fc.fctl.last_data_frame", FT_UINT24, BASE_HEX, VALS(last_data_frame_vals),
|
|
FC_FCTL_LAST_DATA_FRAME_MASK, "Last Data Frame?", HFILL}},
|
|
{ &hf_fc_fctl_ack_0_1,
|
|
{"A01", "fc.fctl.ack_0_1", FT_UINT24, BASE_HEX, VALS(ack_0_1_vals),
|
|
FC_FCTL_ACK_0_1_MASK, "Ack 0/1 value", HFILL}},
|
|
{ &hf_fc_fctl_abts_ack,
|
|
{"AA", "fc.fctl.abts_ack", FT_UINT24, BASE_HEX, VALS(abts_ack_vals),
|
|
FC_FCTL_ABTS_MASK, "ABTS ACK values", HFILL}},
|
|
#if 0
|
|
{ &hf_fc_fctl_abts_not_ack,
|
|
{"AnA", "fc.fctl.abts_not_ack", FT_UINT24, BASE_HEX, VALS(abts_not_ack_vals),
|
|
FC_FCTL_ABTS_MASK, "ABTS not ACK vals", HFILL}},
|
|
#endif
|
|
{ &hf_fc_exchange_first_frame,
|
|
{ "Exchange First In", "fc.exchange_first_frame", FT_FRAMENUM, BASE_NONE, NULL,
|
|
0, "The first frame of this exchange is in this frame", HFILL }},
|
|
{ &hf_fc_exchange_last_frame,
|
|
{ "Exchange Last In", "fc.exchange_last_frame", FT_FRAMENUM, BASE_NONE, NULL,
|
|
0, "The last frame of this exchange is in this frame", HFILL }},
|
|
{ &hf_fc_time,
|
|
{ "Time from Exchange First", "fc.time", FT_RELATIVE_TIME, BASE_NONE, NULL,
|
|
0, "Time since the first frame of the Exchange", HFILL }},
|
|
{ &hf_fc_relative_offset,
|
|
{"Relative Offset", "fc.relative_offset", FT_UINT32, BASE_DEC, NULL,
|
|
0, "Relative offset of data", HFILL}},
|
|
{ &hf_fc_vft,
|
|
{"VFT Header", "fc.vft", FT_UINT16, BASE_DEC, NULL,
|
|
0, NULL, HFILL}},
|
|
{ &hf_fc_vft_rctl,
|
|
{"R_CTL", "fc.vft.rctl", FT_UINT8, BASE_HEX, NULL,
|
|
0, NULL, HFILL}},
|
|
{ &hf_fc_vft_ver,
|
|
{"Version", "fc.vft.ver", FT_UINT8, BASE_DEC, NULL,
|
|
0, "Version of VFT header", HFILL}},
|
|
{ &hf_fc_vft_type,
|
|
{"Type", "fc.vft.type", FT_UINT8, BASE_DEC, NULL,
|
|
0, "Type of tagged frame", HFILL}},
|
|
{ &hf_fc_vft_pri,
|
|
{"Priority", "fc.vft.type", FT_UINT8, BASE_DEC, NULL,
|
|
0, "QoS Priority", HFILL}},
|
|
{ &hf_fc_vft_vf_id,
|
|
{"VF_ID", "fc.vft.vf_id", FT_UINT16, BASE_DEC, NULL,
|
|
0, "Virtual Fabric ID", HFILL}},
|
|
{ &hf_fc_vft_hop_ct,
|
|
{"HopCT", "fc.vft.hop_ct", FT_UINT8, BASE_DEC, NULL,
|
|
0, "Hop Count", HFILL}},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_fc,
|
|
&ett_fcbls,
|
|
&ett_fc_vft,
|
|
&ett_fctl
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_fccrc,
|
|
{ "fc.crc.bad", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }},
|
|
{ &ei_short_hdr,
|
|
{ "fc.short_hdr", PI_MALFORMED, PI_ERROR,
|
|
"Packet length is shorter than the required header", EXPFILL }},
|
|
{ &ei_frag_size,
|
|
{ "fc.frag_size", PI_MALFORMED, PI_ERROR,
|
|
"Invalid fragment size", EXPFILL }}
|
|
};
|
|
|
|
module_t *fc_module;
|
|
expert_module_t* expert_fc;
|
|
|
|
/* FC SOF */
|
|
|
|
static hf_register_info sof_hf[] = {
|
|
{ &hf_fcsof,
|
|
{ "SOF", "fc.sof", FT_UINT32, BASE_HEX, VALS(fc_sof_vals), 0,
|
|
NULL, HFILL }},
|
|
{ &hf_fceof,
|
|
{ "EOF", "fc.eof", FT_UINT32, BASE_HEX, VALS(fc_eof_vals), 0,
|
|
NULL, HFILL }},
|
|
{ &hf_fccrc,
|
|
{ "CRC", "fc.crc", FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *sof_ett[] = {
|
|
&ett_fcsof,
|
|
&ett_fceof,
|
|
&ett_fccrc
|
|
};
|
|
|
|
|
|
/* Register the protocol name and description */
|
|
proto_fc = proto_register_protocol ("Fibre Channel", "FC", "fc");
|
|
fc_handle = register_dissector ("fc", dissect_fc, proto_fc);
|
|
register_dissector ("fc_ifcp", dissect_fc_ifcp, proto_fc);
|
|
fc_tap = register_tap("fc");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_fc, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_fc = expert_register_protocol(proto_fc);
|
|
expert_register_field_array(expert_fc, ei, array_length(ei));
|
|
|
|
/* subdissectors called through this table will find the fchdr structure
|
|
* through data parameter of dissector
|
|
*/
|
|
fcftype_dissector_table = register_dissector_table ("fc.ftype",
|
|
"FC Frame Type",
|
|
FT_UINT8, BASE_HEX, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
|
|
|
|
/* Register preferences */
|
|
fc_module = prefs_register_protocol (proto_fc, NULL);
|
|
prefs_register_bool_preference (fc_module,
|
|
"reassemble",
|
|
"Reassemble multi-frame sequences",
|
|
"If enabled, reassembly of multi-frame "
|
|
"sequences is done",
|
|
&fc_reassemble);
|
|
prefs_register_uint_preference (fc_module,
|
|
"max_frame_size", "Max FC Frame Size",
|
|
"This is the size of non-last frames in a "
|
|
"multi-frame sequence", 10,
|
|
&fc_max_frame_size);
|
|
|
|
register_init_routine (fc_exchange_init_protocol);
|
|
register_cleanup_routine (fc_exchange_cleanup_protocol);
|
|
|
|
|
|
/* Register FC SOF/EOF */
|
|
proto_fcsof = proto_register_protocol("Fibre Channel Delimiters", "FCSoF", "fcsof");
|
|
|
|
proto_register_field_array(proto_fcsof, sof_hf, array_length(sof_hf));
|
|
proto_register_subtree_array(sof_ett, array_length(sof_ett));
|
|
|
|
fcsof_handle = register_dissector("fcsof", dissect_fcsof, proto_fcsof);
|
|
|
|
register_conversation_table(proto_fc, TRUE, fc_conversation_packet, fc_hostlist_packet);
|
|
register_srt_table(proto_fc, NULL, 1, fcstat_packet, fcstat_init, NULL);
|
|
}
|
|
|
|
|
|
/* If this dissector uses sub-dissector registration add a registration routine.
|
|
This format is required because a script is used to find these routines and
|
|
create the code that calls these routines.
|
|
*/
|
|
void
|
|
proto_reg_handoff_fc (void)
|
|
{
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_FIBRE_CHANNEL_FC2,
|
|
create_dissector_handle(dissect_fc_wtap, proto_fc));
|
|
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_FIBRE_CHANNEL_FC2_WITH_FRAME_DELIMS, fcsof_handle);
|
|
|
|
data_handle = find_dissector("data");
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
*/
|