diff options
Diffstat (limited to 'epan/dissectors/packet-fc.c')
| -rw-r--r-- | epan/dissectors/packet-fc.c | 1454 |
1 files changed, 1454 insertions, 0 deletions
diff --git a/epan/dissectors/packet-fc.c b/epan/dissectors/packet-fc.c new file mode 100644 index 0000000000..68253d2965 --- /dev/null +++ b/epan/dissectors/packet-fc.c @@ -0,0 +1,1454 @@ +/* packet-fc.c + * Routines for Fibre Channel Decoding (FC Header, Link Ctl & Basic Link Svc) + * Copyright 2001, Dinesh G Dutt <ddutt@cisco.com> + * Copyright 2003 Ronnie Sahlberg, exchange first/last matching and + * tap listener and misc updates + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" + +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#ifdef HAVE_SYS_TYPES_H +# include <sys/types.h> +#endif + +#ifdef HAVE_NETINET_IN_H +# include <netinet/in.h> +#endif + +#include <glib.h> + +#ifdef NEED_SNPRINTF_H +# include "snprintf.h" +#endif + +#include <epan/packet.h> +#include "prefs.h" +#include "reassemble.h" +#include <epan/conversation.h> +#include "etypes.h" +#include "packet-fc.h" +#include "packet-fclctl.h" +#include "packet-fcbls.h" +#include "tap.h" + +#define FC_HEADER_SIZE 24 +#define FC_RCTL_EISL 0x50 +#define MDSHDR_TRAILER_SIZE 6 + +/* Size of various fields in FC header in bytes */ +#define FC_RCTL_SIZE 1 +#define FC_DID_SIZE 3 +#define FC_CSCTL_SIZE 1 +#define FC_SID_SIZE 3 +#define FC_TYPE_SIZE 1 +#define FC_FCTL_SIZE 3 +#define FC_SEQID_SIZE 1 +#define FC_DFCTL_SIZE 1 +#define FC_SEQCNT_SIZE 2 +#define FC_OXID_SIZE 2 +#define FC_RXID_SIZE 2 +#define FC_PARAM_SIZE 4 + +/* Initialize the protocol and registered fields */ +static int proto_fc = -1; +static int hf_fc_time = -1; +static int hf_fc_exchange_first_frame = -1; +static int hf_fc_exchange_last_frame = -1; +static int hf_fc_rctl = -1; +static int hf_fc_did = -1; +static int hf_fc_csctl = -1; +static int hf_fc_sid = -1; +static int hf_fc_id = -1; +static int hf_fc_type = -1; +static int hf_fc_fctl = -1; +static int hf_fc_fctl_exchange_responder = -1; +static int hf_fc_fctl_seq_recipient = -1; +static int hf_fc_fctl_exchange_first = -1; +static int hf_fc_fctl_exchange_last = -1; +static int hf_fc_fctl_seq_last = -1; +static int hf_fc_fctl_priority = -1; +static int hf_fc_fctl_transfer_seq_initiative = -1; +static int hf_fc_fctl_rexmitted_seq = -1; +static int hf_fc_fctl_rel_offset = -1; +static int hf_fc_fctl_abts_ack = -1; +static int hf_fc_fctl_abts_not_ack = -1; +static int hf_fc_fctl_last_data_frame = -1; +static int hf_fc_fctl_ack_0_1 = -1; +static int hf_fc_seqid = -1; +static int hf_fc_dfctl = -1; +static int hf_fc_seqcnt = -1; +static int hf_fc_oxid = -1; +static int hf_fc_rxid = -1; +static int hf_fc_param = -1; +static int hf_fc_ftype = -1; /* Derived field, non-existent in FC hdr */ +static int hf_fc_reassembled = -1; +static int hf_fc_eisl = -1; + +/* Network_Header fields */ +static int hf_fc_nh_da = -1; +static int hf_fc_nh_sa = -1; + +/* For Basic Link Svc */ +static int hf_fc_bls_seqid_vld = -1; +static int hf_fc_bls_lastvld_seqid = -1; +static int hf_fc_bls_oxid = -1; +static int hf_fc_bls_rxid = -1; +static int hf_fc_bls_lowseqcnt = -1; +static int hf_fc_bls_hiseqcnt = -1; +static int hf_fc_bls_rjtcode = -1; +static int hf_fc_bls_rjtdetail = -1; +static int hf_fc_bls_vendor = -1; + + +/* Initialize the subtree pointers */ +static gint ett_fc = -1; +static gint ett_fctl = -1; +static gint ett_fcbls = -1; + +static dissector_table_t fcftype_dissector_table; +static dissector_handle_t data_handle; + +static int fc_tap = -1; + +/* Reassembly stuff */ +static gboolean fc_reassemble = TRUE; +static guint32 fc_max_frame_size = 1024; +static GHashTable *fc_fragment_table = NULL; + +typedef struct _fcseq_conv_key { + guint32 conv_idx; +} fcseq_conv_key_t; + +typedef struct _fcseq_conv_data { + guint32 seq_cnt; +} fcseq_conv_data_t; + +GHashTable *fcseq_req_hash = NULL; +GMemChunk *fcseq_req_keys = NULL; +GMemChunk *fcseq_req_vals = NULL; +guint32 fcseq_init_count = 25; + +static GHashTable *fc_exchange_unmatched = NULL; +static GHashTable *fc_exchange_matched = NULL; +static GMemChunk *fc_exchange_vals = NULL; +static guint32 fc_exchange_init_count = 200; + +/* + * Hash Functions + */ +static gint +fcseq_equal(gconstpointer v, gconstpointer w) +{ + fcseq_conv_key_t *v1 = (fcseq_conv_key_t *)v; + fcseq_conv_key_t *v2 = (fcseq_conv_key_t *)w; + + return (v1->conv_idx == v2->conv_idx); +} + +static guint +fcseq_hash (gconstpointer v) +{ + fcseq_conv_key_t *key = (fcseq_conv_key_t *)v; + guint val; + + val = key->conv_idx; + + return val; +} + +static guint +fc_exchange_hash_unmatched(gconstpointer v) +{ + const fc_exchange_data *fced=(const fc_exchange_data *)v; + + return fced->oxid; +} +static gint +fc_exchange_equal_unmatched(gconstpointer v1, gconstpointer v2) +{ + const fc_exchange_data *fced1=(const fc_exchange_data *)v1; + const fc_exchange_data *fced2=(const fc_exchange_data *)v2; + + /* oxid must match */ + if(fced1->oxid!=fced2->oxid){ + return 0; + } + /* compare s_id, d_id and treat the fc address + s_id==00.00.00 as a wildcard matching anything */ + if( ((fced1->s_id.data[0]!=0)||(fced1->s_id.data[1]!=0)||(fced1->s_id.data[2]!=0)) && CMP_ADDRESS(&fced1->s_id, &fced2->s_id) ){ + return 0; + } + if(CMP_ADDRESS(&fced1->d_id, &fced2->d_id)){ + return 0; + } + + return 1; +} + +static guint +fc_exchange_hash_matched(gconstpointer v) +{ + const fc_exchange_data *fced=(const fc_exchange_data *)v; + + return fced->oxid; +} +static gint +fc_exchange_equal_matched(gconstpointer v1, gconstpointer v2) +{ + const fc_exchange_data *fced1=(const fc_exchange_data *)v1; + const fc_exchange_data *fced2=(const fc_exchange_data *)v2; + guint32 fef1, fef2, lef1, lef2; + + /* oxid must match */ + if(fced1->oxid!=fced2->oxid){ + return 0; + } + fef1=fced1->first_exchange_frame; + fef2=fced2->first_exchange_frame; + lef1=fced1->last_exchange_frame; + lef2=fced2->last_exchange_frame; + if(!fef1)fef1=fef2; + if(!fef2)fef2=fef1; + if(!lef1)lef1=lef2; + if(!lef2)lef2=lef1; + + if(fef1!=fef2){ + return 0; + } + if(lef1!=lef2){ + return 0; + } + + return 1; +} + +static void +fc_exchange_init_protocol(void) +{ + if(fc_exchange_vals){ + g_mem_chunk_destroy(fc_exchange_vals); + fc_exchange_vals=NULL; + } + if(fc_exchange_unmatched){ + g_hash_table_destroy(fc_exchange_unmatched); + fc_exchange_unmatched=NULL; + } + if(fc_exchange_matched){ + g_hash_table_destroy(fc_exchange_matched); + fc_exchange_matched=NULL; + } + + fc_exchange_unmatched=g_hash_table_new(fc_exchange_hash_unmatched, fc_exchange_equal_unmatched); + fc_exchange_matched=g_hash_table_new(fc_exchange_hash_matched, fc_exchange_equal_matched); + fc_exchange_vals=g_mem_chunk_new("fc_exchange_vals", sizeof(fc_exchange_data), fc_exchange_init_count*sizeof(fc_exchange_data), G_ALLOC_AND_FREE); + + fragment_table_init(&fc_fragment_table); + + if (fcseq_req_keys) + g_mem_chunk_destroy (fcseq_req_keys); + if (fcseq_req_vals) + g_mem_chunk_destroy (fcseq_req_vals); + if (fcseq_req_hash) + g_hash_table_destroy(fcseq_req_hash); + + fcseq_req_hash = g_hash_table_new(fcseq_hash, fcseq_equal); + fcseq_req_keys = g_mem_chunk_new ("fcseq_req_keys", + sizeof(fcseq_conv_key_t), + fcseq_init_count * + sizeof(fcseq_conv_key_t), + G_ALLOC_AND_FREE); + fcseq_req_vals = g_mem_chunk_new ("fcseq_req_vals", + sizeof(fcseq_conv_data_t), + fcseq_init_count * + sizeof(fcseq_conv_data_t), + G_ALLOC_AND_FREE); +} + + +const value_string fc_fc4_val[] = { + {FC_TYPE_ELS, "Ext Link Svc"}, + {FC_TYPE_LLCSNAP, "LLC_SNAP"}, + {FC_TYPE_IP, "IP/FC"}, + {FC_TYPE_SCSI, "FCP"}, + {FC_TYPE_FCCT, "FC_CT"}, + {FC_TYPE_SWILS, "SW_ILS"}, + {FC_TYPE_AL, "AL"}, + {FC_TYPE_SNMP, "SNMP"}, + {FC_TYPE_SB_FROM_CU, "SB-3(CU->Channel)"}, + {FC_TYPE_SB_TO_CU, "SB-3(Channel->CU)"}, + {0, NULL}, +}; + +static const value_string fc_ftype_vals [] = { + {FC_FTYPE_UNDEF , "Unknown frame"}, + {FC_FTYPE_SWILS, "SW_ILS"}, + {FC_FTYPE_IP , "IP/FC"}, + {FC_FTYPE_SCSI , "FCP"}, + {FC_FTYPE_BLS , "Basic Link Svc"}, + {FC_FTYPE_ELS , "ELS"}, + {FC_FTYPE_FCCT , "FC_CT"}, + {FC_FTYPE_LINKDATA, "Link Data"}, + {FC_FTYPE_VDO, "Video Data"}, + {FC_FTYPE_LINKCTL, "Link Ctl"}, + {FC_FTYPE_SBCCS, "SBCCS"}, + {0, NULL}, +}; + +static const value_string fc_wka_vals[] = { + {FC_WKA_MULTICAST, "Multicast Server"}, + {FC_WKA_CLKSYNC, "Clock Sync Server"}, + {FC_WKA_KEYDIST, "Key Distribution Server"}, + {FC_WKA_ALIAS, "Alias Server"}, + {FC_WKA_QOSF, "QoS Facilitator"}, + {FC_WKA_MGMT, "Management Server"}, + {FC_WKA_TIME, "Time Server"}, + {FC_WKA_DNS, "Directory Server"}, + {FC_WKA_FABRIC_CTRLR, "Fabric Ctlr"}, + {FC_WKA_FPORT, "F_Port Server"}, + {FC_WKA_BCAST, "Broadcast ID"}, + {0, NULL}, +}; + +static const value_string fc_routing_val[] = { + {FC_RCTL_DEV_DATA, "Device_Data"}, + {FC_RCTL_ELS, "Extended Link Services"}, + {FC_RCTL_LINK_DATA, "FC-4 Link_Data"}, + {FC_RCTL_VIDEO, "Video_Data"}, + {FC_RCTL_BLS, "Basic Link Services"}, + {FC_RCTL_LINK_CTL, "Link_Control Frame"}, + {0, NULL}, +}; + +static const value_string fc_iu_val[] = { + {FC_IU_UNCATEGORIZED , "Uncategorized Data"}, + {FC_IU_SOLICITED_DATA , "Solicited Data"}, + {FC_IU_UNSOLICITED_CTL , "Unsolicited Control"}, + {FC_IU_SOLICITED_CTL , "Solicited Control"}, + {FC_IU_UNSOLICITED_DATA, "Solicited Data"}, + {FC_IU_DATA_DESCRIPTOR , "Data Descriptor"}, + {FC_IU_UNSOLICITED_CMD , "Unsolicited Command"}, + {FC_IU_CMD_STATUS , "Command Status"}, + {0, NULL}, +}; + + +static void fc_defragment_init(void) +{ + fragment_table_init(&fc_fragment_table); +} + + +static gchar * +fctl_to_str (const guint8 *fctl, gchar *str, gboolean is_ack) +{ + int stroff = 0; + guint8 tmp = 0; + + if (str == NULL) + return (str); + + if (fctl[2] & 0x80) { + strcpy (str, "Exchange Responder, "); + stroff += 20; + } + else { + strcpy (str, "Exchange Originator, "); + stroff += 21; + } + + if (fctl[2] & 0x40) { + strcpy (&str[stroff], "Seq Recipient, "); + stroff += 15; + } + else { + strcpy (&str[stroff], "Seq Initiator, "); + stroff += 15; + } + + if (fctl[2] & 0x20) { + strcpy (&str[stroff], "Exchg First, "); + stroff += 13; + } + + if (fctl[2] & 0x10) { + strcpy (&str[stroff], "Exchg Last, "); + stroff += 12; + } + + if (fctl[2] & 0x8) { + strcpy (&str[stroff], "Seq Last, "); + stroff += 10; + } + + if (fctl[2] & 0x2) { + strcpy (&str[stroff], "Priority, "); + stroff += 10; + } + else { + strcpy (&str[stroff], "CS_CTL, "); + stroff += 8; + } + + if (fctl[2] & 0x1) { + strcpy (&str[stroff], "Transfer Seq Initiative, "); + stroff += 25; + } + + if (fctl[1] & 0x30) { + strcpy (&str[stroff], "ACK_0 Reqd, "); + stroff += 12; + } + else if (fctl[1] & 0x10) { + strcpy (&str[stroff], "ACK_1 Reqd, "); + stroff += 12; + } + + if (fctl[1] & 0x2) { + strcpy (&str[stroff], "Rexmitted Seq, "); + stroff += 15; + } + + tmp = fctl[0] & 0xC0; + switch (tmp) { + case 0: + strcpy (&str[stroff], "Last Data Frame - No Info, "); + stroff += 27; + break; + case 1: + strcpy (&str[stroff], "Last Data Frame - Seq Imm, "); + stroff += 27; + break; + case 2: + strcpy (&str[stroff], "Last Data Frame - Seq Soon, "); + stroff += 28; + break; + case 3: + strcpy (&str[stroff], "Last Data Frame - Seq Delyd, "); + stroff += 29; + break; + } + + tmp = fctl[0] & 0x30; + switch (tmp) { + case 0: + if (is_ack) { + strcpy (&str[stroff], "ABTS - Cont, "); + stroff += 13; + } + else { + strcpy (&str[stroff], "ABTS - Abort/MS, "); + stroff += 17; + } + break; + case 0x10: + if (is_ack) { + strcpy (&str[stroff], "ABTS - AbortABTS - Abort, "); + stroff += 14; + } + else { + strcpy (&str[stroff], "ABTS - Abort/SS, "); + stroff += 17; + } + break; + case 0x20: + if (is_ack) { + strcpy (&str[stroff], "ABTS - Stop, "); + stroff += 13; + } + else { + strcpy (&str[stroff], "ABTS - Process/IB, "); + stroff += 19; + } + break; + case 0x30: + if (is_ack) { + strcpy (&str[stroff], "ABTS - Imm Seq Retx, "); + stroff += 21; + } + else { + strcpy (&str[stroff], "ABTS - Discard/MS/Imm Retx, "); + stroff += 28; + } + break; + } + + if (fctl[0] & 0x8) { + strcpy (&str[stroff], "Rel Offset = 1"); + stroff += 14; + } + + return (str); +} + +/* 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_item *ti; + proto_tree *acc_tree; + int offset = 0; + + /* Make entries in Protocol column and Info column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BLS"); + + if (check_col(pinfo->cinfo, COL_INFO)) + col_set_str(pinfo->cinfo, COL_INFO, "BA_ACC"); + + if (tree) { + ti = proto_tree_add_text (tree, tvb, 0, tvb_length (tvb), "Basic Link Svc"); + acc_tree = proto_item_add_subtree (ti, ett_fcbls); + + proto_tree_add_item (acc_tree, hf_fc_bls_seqid_vld, tvb, offset++, 1, FALSE); + proto_tree_add_item (acc_tree, hf_fc_bls_lastvld_seqid, tvb, offset++, 1, FALSE); + offset += 2; /* Skip reserved field */ + proto_tree_add_item (acc_tree, hf_fc_bls_oxid, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item (acc_tree, hf_fc_bls_rxid, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item (acc_tree, hf_fc_bls_lowseqcnt, tvb, offset, 2, FALSE); + offset += 2; + proto_tree_add_item (acc_tree, hf_fc_bls_hiseqcnt, tvb, offset, 2, FALSE); + } +} + +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_item *ti; + proto_tree *rjt_tree; + int offset = 0; + + /* Make entries in Protocol column and Info column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "BLS"); + + if (check_col(pinfo->cinfo, COL_INFO)) + col_set_str(pinfo->cinfo, COL_INFO, "BA_RJT"); + + if (tree) { + ti = proto_tree_add_text (tree, tvb, 0, tvb_length (tvb), "Basic Link Svc"); + rjt_tree = proto_item_add_subtree (ti, ett_fcbls); + + proto_tree_add_item (rjt_tree, hf_fc_bls_rjtcode, tvb, offset+1, 1, FALSE); + proto_tree_add_item (rjt_tree, hf_fc_bls_rjtdetail, tvb, offset+2, 1, FALSE); + proto_tree_add_item (rjt_tree, hf_fc_bls_vendor, tvb, offset+3, 1, FALSE); + } +} + +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; + default: + return FC_FTYPE_UNDEF; + } + break; + case FC_RCTL_ELS: + if (((r_ctl & 0x0F) == 0x2) || ((r_ctl & 0x0F) == 0x3)) + return FC_FTYPE_ELS; + else + return FC_FTYPE_UNDEF; + break; + case FC_RCTL_LINK_DATA: + return FC_FTYPE_LINKDATA; + break; + case FC_RCTL_VIDEO: + return FC_FTYPE_VDO; + break; + case FC_RCTL_BLS: + if (type == 0) + return FC_FTYPE_BLS; + else + return FC_FTYPE_UNDEF; + break; + case FC_RCTL_LINK_CTL: + return FC_FTYPE_LINKCTL; + break; + default: + return FC_FTYPE_UNDEF; + break; + } +} + +static const value_string abts_ack_vals[] = { + {0x000000, "ABTS - Cont"}, + {0x000010, "ABTS - Abort"}, + {0x000020, "ABTS - Stop"}, + {0x000030, "ABTS - Imm Seq Retx"}, + {0,NULL} +}; +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} +}; +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" +}; + + + + +/* 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, gboolean is_ack, guint32 fctl) +{ + proto_item *item; + proto_tree *tree; + gchar str[256]; + + item=proto_tree_add_uint(parent_tree, hf_fc_fctl, tvb, offset, 3, fctl); + tree=proto_item_add_subtree(item, ett_fctl); + + + proto_tree_add_boolean(tree, hf_fc_fctl_exchange_responder, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_seq_recipient, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_exchange_first, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_exchange_last, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_seq_last, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_priority, tvb, offset, 3, fctl); + + proto_tree_add_boolean(tree, hf_fc_fctl_transfer_seq_initiative, tvb, offset, 3, fctl); + + proto_tree_add_uint(tree, hf_fc_fctl_last_data_frame, tvb, offset, 3, fctl); + + proto_tree_add_uint(tree, hf_fc_fctl_ack_0_1, tvb, offset, 3, fctl); + + + proto_tree_add_boolean(tree, hf_fc_fctl_rexmitted_seq, tvb, offset, 3, fctl); + + if(is_ack){ + proto_tree_add_uint(tree, hf_fc_fctl_abts_ack, tvb, offset, 3, fctl); + } else { + proto_tree_add_uint(tree, hf_fc_fctl_abts_ack, tvb, offset, 3, fctl); + } + + proto_tree_add_boolean(tree, hf_fc_fctl_rel_offset, tvb, offset, 3, fctl); + + fctl_to_str( ((guint8 *)&fctl), str, is_ack); + proto_item_append_text(item, " %s", str); +} + +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 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + /* Set up structures needed to add the protocol subtree and manage it */ + proto_item *ti=NULL; + proto_tree *fc_tree = NULL; + tvbuff_t *next_tvb; + int offset = 0, next_offset, eisl_offset = -1; + gboolean is_lastframe_inseq, is_1frame_inseq, is_valid_frame; + gboolean is_exchg_resp = 0; + fragment_data *fcfrag_head; + guint32 frag_id; + guint32 frag_size; + guint8 df_ctl, seq_id; + + guint32 param; + guint16 real_seqcnt; + guint8 ftype; + gboolean is_ack; + + static fc_hdr fchdr; + fc_exchange_data *fc_ex=NULL; + + conversation_t *conversation; + fcseq_conv_data_t *cdata; + fcseq_conv_key_t ckey, *req_key; + + fchdr.fced=NULL; + + /* Make entries in Protocol column and Info column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "FC"); + + fchdr.r_ctl = tvb_get_guint8 (tvb, offset); + + /* If the R_CTL is the EISL field, skip the first 8 bytes to retrieve the + * real FC header. EISL is Cisco-proprietary and is not decoded. + */ + if (fchdr.r_ctl == FC_RCTL_EISL) { + eisl_offset = offset; + offset += 8; + fchdr.r_ctl = tvb_get_guint8 (tvb, offset); + } + + SET_ADDRESS (&pinfo->dst, AT_FC, 3, tvb_get_ptr(tvb,offset+1,3)); + SET_ADDRESS (&fchdr.d_id, AT_FC, 3, tvb_get_ptr(tvb,offset+1,3)); + SET_ADDRESS (&pinfo->src, AT_FC, 3, tvb_get_ptr(tvb,offset+5,3)); + SET_ADDRESS (&fchdr.s_id, AT_FC, 3, tvb_get_ptr(tvb,offset+5,3)); + 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); + param = tvb_get_ntohl (tvb, offset+20); + seq_id = tvb_get_guint8 (tvb, offset+12); + + pinfo->oxid = fchdr.oxid; + pinfo->rxid = fchdr.rxid; + pinfo->ptype = PT_EXCHG; + pinfo->r_ctl = fchdr.r_ctl; + + 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 = (((pinfo->sof_eof & PINFO_SOF_FIRST_FRAME) == PINFO_SOF_FIRST_FRAME) || + (((pinfo->sof_eof & PINFO_SOF_SOFF) == PINFO_SOF_SOFF) && + (fchdr.seqcnt == 0))); + + is_lastframe_inseq = ((pinfo->sof_eof & PINFO_EOF_LAST_FRAME) == PINFO_EOF_LAST_FRAME); + + if ((pinfo->sof_eof & PINFO_SOF_SOFF) == PINFO_SOF_SOFF) { + 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); + + if (check_col (pinfo->cinfo, COL_INFO)) { + col_add_str (pinfo->cinfo, COL_INFO, match_strval (ftype, fc_ftype_vals)); + + if (ftype == FC_FTYPE_LINKCTL) + col_append_fstr (pinfo->cinfo, COL_INFO, ", %s", + match_strval ((fchdr.r_ctl & 0x0F), + fc_lctl_proto_val)); + } + + /* In the interest of speed, if "tree" is NULL, don't do any work not + necessary to generate protocol tree items. */ + if (tree) { + 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); + } + + /* Highlight EISL header, if present */ + if (eisl_offset != -1) { + proto_tree_add_item (fc_tree, hf_fc_eisl, tvb, eisl_offset, 8, 0); + } + + /* match first exchange with last exchange */ + if(fchdr.fctl&FC_FCTL_EXCHANGE_FIRST){ + if(!pinfo->fd->flags.visited){ + fc_exchange_data fced, *old_fced; + + /* first check if we already have seen this exchange and it + is still open/unmatched. + */ + fced.oxid=fchdr.oxid; + SET_ADDRESS(&fced.s_id, fchdr.s_id.type, fchdr.s_id.len, fchdr.s_id.data); + SET_ADDRESS(&fced.d_id, fchdr.d_id.type, fchdr.d_id.len, fchdr.d_id.data); + old_fced=g_hash_table_lookup(fc_exchange_unmatched, &fced); + if(old_fced){ + g_hash_table_remove(fc_exchange_unmatched, old_fced); + } + old_fced=g_mem_chunk_alloc(fc_exchange_vals); + old_fced->oxid=fchdr.oxid; + COPY_ADDRESS(&old_fced->s_id, &fchdr.s_id); + COPY_ADDRESS(&old_fced->d_id, &fchdr.d_id); + old_fced->first_exchange_frame=pinfo->fd->num; + old_fced->fc_time.nsecs = pinfo->fd->abs_usecs*1000; + old_fced->fc_time.secs = pinfo->fd->abs_secs; + g_hash_table_insert(fc_exchange_unmatched, old_fced, old_fced); + fc_ex=old_fced; + } else { + fc_exchange_data fced, *old_fced; + fced.oxid=fchdr.oxid; + fced.first_exchange_frame=pinfo->fd->num; + fced.last_exchange_frame=0; + old_fced=g_hash_table_lookup(fc_exchange_matched, &fced); + fc_ex=old_fced; + } + } + if(fchdr.fctl&FC_FCTL_EXCHANGE_LAST){ + if(!pinfo->fd->flags.visited){ + fc_exchange_data fced, *old_fced; + + fced.oxid=fchdr.oxid; + SET_ADDRESS(&fced.s_id, fchdr.d_id.type, fchdr.d_id.len, fchdr.d_id.data); + SET_ADDRESS(&fced.d_id, fchdr.s_id.type, fchdr.s_id.len, fchdr.s_id.data); + old_fced=g_hash_table_lookup(fc_exchange_unmatched, &fced); + if(old_fced){ + g_hash_table_remove(fc_exchange_unmatched, old_fced); + old_fced->last_exchange_frame=pinfo->fd->num; + g_hash_table_insert(fc_exchange_matched, old_fced, old_fced); + } + fc_ex=old_fced; + } else { + fc_exchange_data fced, *old_fced; + fced.oxid=fchdr.oxid; + fced.first_exchange_frame=0; + fced.last_exchange_frame=pinfo->fd->num; + old_fced=g_hash_table_lookup(fc_exchange_matched, &fced); + fc_ex=old_fced; + } + } + if(fc_ex){ + if(fchdr.fctl&FC_FCTL_EXCHANGE_FIRST){ + proto_tree_add_uint(fc_tree, hf_fc_exchange_last_frame, tvb, 0, 0, fc_ex->last_exchange_frame); + } + if(fchdr.fctl&FC_FCTL_EXCHANGE_LAST){ + nstime_t delta_time; + proto_tree_add_uint(fc_tree, hf_fc_exchange_first_frame, tvb, 0, 0, fc_ex->first_exchange_frame); + delta_time.secs = pinfo->fd->abs_secs - fc_ex->fc_time.secs; + delta_time.nsecs = pinfo->fd->abs_usecs*1000 - fc_ex->fc_time.nsecs; + if (delta_time.nsecs<0){ + delta_time.nsecs+=1000000000; + delta_time.secs--; + } + proto_tree_add_time(ti, hf_fc_time, tvb, 0, 0, &delta_time); + } + } + fchdr.fced=fc_ex; + + 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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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 (fc_tree, hf_fc_rctl, tvb, offset, + FC_RCTL_SIZE, fchdr.r_ctl, + "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; + } + + proto_tree_add_uint_hidden (fc_tree, hf_fc_ftype, tvb, offset, 1, + ftype); + + /* XXX - use "fc_wka_vals[]" on this? */ + proto_tree_add_string (fc_tree, hf_fc_did, tvb, offset+1, 3, + fc_to_str (fchdr.d_id.data)); + proto_tree_add_string_hidden (fc_tree, hf_fc_id, tvb, offset+1, 3, + fc_to_str (fchdr.d_id.data)); + + proto_tree_add_uint (fc_tree, hf_fc_csctl, tvb, offset+4, 1, fchdr.cs_ctl); + + /* XXX - use "fc_wka_vals[]" on this? */ + proto_tree_add_string (fc_tree, hf_fc_sid, tvb, offset+5, 3, + fc_to_str (fchdr.s_id.data)); + proto_tree_add_string_hidden (fc_tree, hf_fc_id, tvb, offset+5, 3, + fc_to_str (fchdr.s_id.data)); + + 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 (fc_tree, hf_fc_type, tvb, + offset+8, FC_TYPE_SIZE, + fchdr.type,"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, FALSE); + } + } else { + proto_tree_add_item (fc_tree, hf_fc_type, tvb, offset+8, 1, FALSE); + } + + + dissect_fc_fctl(pinfo, fc_tree, tvb, offset+9, is_ack, fchdr.fctl); + + + proto_tree_add_item (fc_tree, hf_fc_seqid, tvb, offset+12, 1, FALSE); + + 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 (fc_tree, hf_fc_param, tvb, + offset+20, 4, param, + "Parameter: 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, FALSE); + } + } else if (ftype == FC_FTYPE_BLS) { + if ((fchdr.r_ctl & 0x0F) == FC_BLS_ABTS) { + proto_tree_add_uint_format (fc_tree, hf_fc_param, tvb, + offset+20, 4, param, + "Parameter: 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, FALSE); + } + } else { + proto_tree_add_item (fc_tree, hf_fc_param, tvb, offset+20, 4, FALSE); + } + + /* Skip the Frame_Header */ + next_offset = offset + FC_HEADER_SIZE; + + /* Network_Header present? */ + if (df_ctl & FC_DFCTL_NH) { + /* Yes - dissect it. */ + if (tree) { + proto_tree_add_string (fc_tree, hf_fc_nh_da, tvb, next_offset, 8, + fcwwn_to_str (tvb_get_ptr (tvb, offset, 8))); + proto_tree_add_string (fc_tree, hf_fc_nh_sa, tvb, offset+8, 8, + fcwwn_to_str (tvb_get_ptr (tvb, offset+8, 8))); + } + 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 { + /* XXX is this right? offset 20, shouldnt it be offset 9? */ + is_exchg_resp = ((tvb_get_guint8 (tvb, offset+20) & 0x80) == 0x80); + } + + frag_size = tvb_reported_length (tvb)-FC_HEADER_SIZE; + + /* If there is an MDS header, we need to subtract the MDS trailer size */ + if ((pinfo->ethertype == ETHERTYPE_UNK) || (pinfo->ethertype == ETHERTYPE_FCFT)) { + frag_size -= MDSHDR_TRAILER_SIZE; + } else if (pinfo->ethertype == ETHERTYPE_BRDWALK) { + 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 */ + if (check_col (pinfo->cinfo, COL_INFO)) { + 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) && + (!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. + */ + conversation = find_conversation (&pinfo->src, &pinfo->dst, + pinfo->ptype, pinfo->oxid, + pinfo->rxid, NO_PORT2); + if (!conversation) { + conversation = conversation_new (&pinfo->src, &pinfo->dst, + pinfo->ptype, pinfo->oxid, + pinfo->rxid, NO_PORT2); + } + + 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 = g_mem_chunk_alloc (fcseq_req_keys); + req_key->conv_idx = conversation->index; + + cdata = g_mem_chunk_alloc (fcseq_req_vals); + 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; + } + + frag_id = ((pinfo->oxid << 16) ^ seq_id) | is_exchg_resp ; + + /* We assume that all frames are of the same max size */ + fcfrag_head = fragment_add (tvb, FC_HEADER_SIZE, pinfo, frag_id, + fc_fragment_table, + real_seqcnt * fc_max_frame_size, + frag_size, + !is_lastframe_inseq); + + if (fcfrag_head) { + next_tvb = tvb_new_real_data (fcfrag_head->data, + fcfrag_head->datalen, + fcfrag_head->datalen); + tvb_set_child_real_data_tvbuff(tvb, next_tvb); + + /* Add the defragmented data to the data source list. */ + add_new_data_source(pinfo, next_tvb, "Reassembled FC"); + + if (tree) { + proto_tree_add_boolean_hidden (fc_tree, hf_fc_reassembled, + tvb, offset+9, 1, 1); + } + } + else { + if (tree) { + proto_tree_add_boolean_hidden (fc_tree, hf_fc_reassembled, + tvb, offset+9, 1, 0); + } + next_tvb = tvb_new_subset (tvb, next_offset, -1, -1); + call_dissector (data_handle, next_tvb, pinfo, tree); + return; + } + } else { + if (tree) { + proto_tree_add_boolean_hidden (fc_tree, hf_fc_reassembled, + tvb, offset+9, 1, 0); + } + next_tvb = tvb_new_subset (tvb, next_offset, -1, -1); + } + + if ((ftype != FC_FTYPE_LINKCTL) && (ftype != FC_FTYPE_BLS)) { + if (!dissector_try_port (fcftype_dissector_table, ftype, next_tvb, + pinfo, tree)) { + 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); + } + } + + tap_queue_packet(fc_tap, pinfo, &fchdr); +} + + +/* Register the protocol with Ethereal */ + +/* 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, + "R_CTL", 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_STRING, BASE_HEX, NULL, 0x0, + "Destination Address", HFILL}}, + { &hf_fc_csctl, + {"CS_CTL", "fc.cs_ctl", FT_UINT8, BASE_HEX, NULL, 0x0, + "CS_CTL", HFILL}}, + { &hf_fc_sid, + {"Src Addr", "fc.s_id", FT_STRING, BASE_HEX, NULL, 0x0, + "Source Address", HFILL}}, + { &hf_fc_id, + {"Addr", "fc.id", FT_STRING, BASE_HEX, NULL, 0x0, + "Source or Destination Address", HFILL}}, + { &hf_fc_type, + {"Type", "fc.type", FT_UINT8, BASE_HEX, VALS (fc_fc4_val), 0x0, + "", HFILL}}, + { &hf_fc_fctl, + {"F_CTL", "fc.f_ctl", FT_UINT24, BASE_HEX, NULL, 0x0, "", 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, "", 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, "Parameter", + HFILL}}, + + { &hf_fc_reassembled, + {"Reassembled Frame", "fc.reassembled", FT_BOOLEAN, BASE_HEX, NULL, + 0x0, "", HFILL}}, + { &hf_fc_nh_da, + {"Network DA", "fc.nethdr.da", FT_STRING, BASE_HEX, NULL, + 0x0, "", HFILL}}, + { &hf_fc_nh_sa, + {"Network SA", "fc.nethdr.sa", FT_STRING, BASE_HEX, NULL, + 0x0, "", 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, "", HFILL}}, + { &hf_fc_bls_lastvld_seqid, + {"Last Valid SEQID", "fc.bls_lastseqid", FT_UINT8, BASE_HEX, NULL, + 0x0, "", HFILL}}, + { &hf_fc_bls_oxid, + {"OXID", "fc.bls_oxid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL}}, + { &hf_fc_bls_rxid, + {"RXID", "fc.bls_rxid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL}}, + { &hf_fc_bls_lowseqcnt, + {"Low SEQCNT", "fc.bls_lseqcnt", FT_UINT16, BASE_HEX, NULL, 0x0, "", + HFILL}}, + { &hf_fc_bls_hiseqcnt, + {"High SEQCNT", "fc.bls_hseqcnt", FT_UINT16, BASE_HEX, NULL, 0x0, "", + HFILL}}, + { &hf_fc_bls_rjtcode, + {"Reason", "fc.bls_reason", FT_UINT8, BASE_HEX, VALS(fc_bls_barjt_val), + 0x0, "", HFILL}}, + { &hf_fc_bls_rjtdetail, + {"Reason Explanantion", "fc.bls_rjtdetail", FT_UINT8, BASE_HEX, + VALS (fc_bls_barjt_det_val), 0x0, "", HFILL}}, + { &hf_fc_bls_vendor, + {"Vendor Unique Reason", "fc.bls_vnduniq", FT_UINT8, BASE_HEX, NULL, + 0x0, "", 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}}, + { &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}}, + { &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_eisl, + {"EISL Header", "fc.eisl", FT_BYTES, BASE_HEX, NULL, 0, "EISL Header", HFILL}}, + }; + + /* Setup protocol subtree array */ + static gint *ett[] = { + &ett_fc, + &ett_fcbls, + &ett_fctl + }; + + module_t *fc_module; + + /* Register the protocol name and description */ + proto_fc = proto_register_protocol ("Fibre Channel", "FC", "fc"); + register_dissector ("fc", dissect_fc, 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)); + + fcftype_dissector_table = register_dissector_table ("fc.ftype", + "FC Frame Type", + FT_UINT8, BASE_HEX); + + /* 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_defragment_init); + register_init_routine (fc_exchange_init_protocol); +} + + +/* 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) +{ + data_handle = find_dissector("data"); +} |