epan/dissectors/packet-fip.c

   1 /*
   2  * packet-fip.c
   3  * Routines for FIP dissection - FCoE Initialization Protocol
   4  * Copyright (c) 2008 Cisco Systems, Inc. (jeykholt@cisco.com)
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * Based on packet-fcoe.c, Copyright 2006, Nuova Systems, (jre@nuovasystems.com)
  13  * Based on packet-fcp.c, Copyright 2001, Dinesh G Dutt (ddutt@cisco.com)
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  28  */
  29
  30 /*
  31  * For FIP protocol details, see http://t11.org.
  32  * This version uses preliminary details not yet standardized.
  33  * Based on http://www.t11.org/ftp/t11/pub/fc/bb-5/08-543v1.pdf
  34  * and      http://www.t11.org/ftp/t11/pub/fc/bb-5/08-545v1.pdf
  35  */
  36
  37 #include "config.h"
  38
  39 #include <glib.h>
  40
  41 #include <epan/packet.h>
  42 #include <epan/to_str.h>
  43 #include <epan/etypes.h>
  44 #include <epan/expert.h>
  45
  46 /*
  47  * FIP protocol information.
  48  */
  49 #define FIP_HEADER_LEN  10
  50 #define FIP_BPW          4          /* bytes per descriptor length unit */
  51
  52 /*
  53  * FIP opcodes and subcodes.
  54  */
  55 enum fip_opcode {
  56     FIP_OP_DISC  = 1,               /* discovery, advertisement, etc. */
  57     FIP_OP_LS    = 2,               /* Link Service request or reply */
  58     FIP_OP_CTRL  = 3,               /* control */
  59     FIP_OP_VLAN  = 4,               /* VLAN request or reply */
  60     FIP_OP_VN2VN = 5                /* VN_port to VN_port operation */
  61 };
  62
  63 /*
  64  * Subcodes for FIP_OP_DISC.
  65  */
  66 enum fip_disc_subcode {
  67     FIP_SC_SOL =    1,              /* solicitation */
  68     FIP_SC_ADV =    2               /* advertisement */
  69 };
  70
  71 /*
  72  * Subcodes for FIP_OP_LS.
  73  */
  74 enum fip_ls_subcode {
  75     FIP_SC_REQ =    1,              /* request */
  76     FIP_SC_REP =    2               /* reply */
  77 };
  78
  79 enum fip_ctrl_subcode {
  80     FIP_SC_KA =     1,              /* keep-alive */
  81     FIP_SC_CVL =    2               /* clear virtual link */
  82 };
  83
  84 enum fip_vlan_subcode {
  85     FIP_VL_REQ =    1,              /* request */
  86     FIP_VL_REP =    2               /* reply */
  87 };
  88
  89 /*
  90  * Subcodes for FIP_OP_VN2VN.
  91  * XXX proposal
  92  */
  93 enum fip_vn2vn_subcode {
  94     FIP_SC_VN_PROBE_REQ    = 1,     /* probe request */
  95     FIP_SC_VN_PROBE_REP    = 2,     /* probe reply */
  96     FIP_SC_VN_CLAIM_NOTIFY = 3,     /* claim notification */
  97     FIP_SC_VN_CLAIM_REP    = 4,     /* claim response */
  98     FIP_SC_VN_BEACON       = 5      /* beacon */
  99 };
 100
 101 static const value_string fip_opcodes[] = {
 102     { FIP_OP_DISC,      "Discovery" },
 103     { FIP_OP_LS,        "Link Service" },
 104     { FIP_OP_CTRL,      "Control" },
 105     { FIP_OP_VLAN,      "VLAN" },
 106     { FIP_OP_VN2VN,     "VN2VN" },
 107     { 0,    NULL }
 108 };
 109
 110 static const value_string fip_disc_subcodes[] = {
 111     { FIP_SC_SOL,       "Solicitation" },
 112     { FIP_SC_ADV,       "Advertisement" },
 113     { 0,    NULL }
 114 };
 115
 116 static const value_string fip_ls_subcodes[] = {
 117     { FIP_SC_REQ,       "ELS Request" },
 118     { FIP_SC_REP,       "ELS Response" },
 119     { 0,    NULL }
 120 };
 121
 122 static const value_string fip_ctrl_subcodes[] = {
 123     { FIP_SC_KA,        "Keep-Alive" },
 124     { FIP_SC_CVL,       "Clear Virtual Link" },
 125     { 0,    NULL }
 126 };
 127
 128 static const value_string fip_vlan_subcodes[] = {
 129     { FIP_VL_REQ,       "VLAN Request" },
 130     { FIP_VL_REP,       "VLAN Response" },
 131     { 0,    NULL }
 132 };
 133
 134 static const value_string fip_vn2vn_subcodes[] = {
 135     { FIP_SC_VN_PROBE_REQ,    "Probe Request" },
 136     { FIP_SC_VN_PROBE_REP,    "Probe Reply" },
 137     { FIP_SC_VN_CLAIM_NOTIFY, "Claim Notification" },
 138     { FIP_SC_VN_CLAIM_REP,    "Claim Response" },
 139     { FIP_SC_VN_BEACON,       "Beacon" },
 140     { 0,    NULL }
 141 };
 142
 143 /*
 144  * Descriptor types.
 145  */
 146 enum fip_desc_type {
 147     FIP_DT_PRI       =  1, /* priority for forwarder selection */
 148     FIP_DT_MAC       =  2, /* MAC address */
 149     FIP_DT_MAP_OUI   =  3, /* FC-MAP OUI */
 150     FIP_DT_NAME      =  4, /* switch name or node name */
 151     FIP_DT_FAB       =  5, /* fabric descriptor */
 152     FIP_DT_FCOE_SIZE =  6, /* max FCoE frame size */
 153     FIP_DT_FLOGI     =  7, /* FLOGI request or response */
 154     FIP_DT_FDISC     =  8, /* FDISC request or response */
 155     FIP_DT_LOGO      =  9, /* LOGO request or response */
 156     FIP_DT_ELP       = 10, /* ELP request or response */
 157     FIP_DT_VN        = 11, /* VN_Port Info */
 158     FIP_DT_FKA       = 12, /* FIP keep-alive / advert. period */
 159     FIP_DT_VEND      = 13, /* Vendor-specific TLV */
 160     FIP_DT_VLAN      = 14, /* VLAN number */
 161     FIP_DT_FC4F      = 15  /* FC-4 features */
 162 };
 163
 164 static const value_string fip_desc_types[] = {
 165     { FIP_DT_PRI,       "Priority" },
 166     { FIP_DT_MAC,       "MAC Address" },
 167     { FIP_DT_MAP_OUI,   "FPMA MAP OUI" },
 168     { FIP_DT_NAME,      "Switch or Node Name" },
 169     { FIP_DT_FAB,       "Fabric Descriptor" },
 170     { FIP_DT_FCOE_SIZE, "Max FCoE frame size" },
 171     { FIP_DT_FLOGI,     "FLOGI Encapsulation" },
 172     { FIP_DT_FDISC,     "FDISC Encapsulation" },
 173     { FIP_DT_LOGO,      "LOGO Encapsulation" },
 174     { FIP_DT_ELP,       "ELP Encapsulation" },
 175     { FIP_DT_VN,        "VN_Port Info" },
 176     { FIP_DT_FKA,       "FKA_ADV_Period" },
 177     { FIP_DT_VEND,      "Vendor_ID" },
 178     { FIP_DT_VLAN,      "VLAN" },
 179     { FIP_DT_FC4F,      "FC-4 features" },
 180     { 0,    NULL }
 181 };
 182
 183 /*
 184  * flags in header fip_flags.
 185  */
 186 enum fip_flag {
 187     FIP_FL_FPMA    = 0x8000,         /* supports FPMA fabric-provided MACs */
 188     FIP_FL_SPMA    = 0x4000,         /* supports SPMA server-provided MACs */
 189     FIP_FL_REC_P2P = 0x0008,         /* recorded addr or point-to-point */
 190     FIP_FL_AVAIL   = 0x0004,         /* available for FLOGI */
 191     FIP_FL_SOL     = 0x0002,         /* this is a solicited message */
 192     FIP_FL_FPORT   = 0x0001          /* sent from an F port */
 193 };
 194
 195 static int proto_fip            = -1;
 196 static int hf_fip_ver           = -1;
 197 static int hf_fip_op            = -1;
 198 static int hf_fip_disc_subcode  = -1;
 199 static int hf_fip_ls_subcode    = -1;
 200 static int hf_fip_ctrl_subcode  = -1;
 201 static int hf_fip_vlan_subcode  = -1;
 202 static int hf_fip_vn2vn_subcode = -1;
 203 static int hf_fip_hex_subcode   = -1;
 204 static int hf_fip_dlen          = -1;
 205 static int hf_fip_flags         = -1;
 206 static int hf_fip_flag_fpma     = -1;
 207 static int hf_fip_flag_spma     = -1;
 208 static int hf_fip_flag_rec_p2p  = -1;
 209 static int hf_fip_flag_avail    = -1;
 210 static int hf_fip_flag_sol      = -1;
 211 static int hf_fip_flag_fport    = -1;
 212
 213 static const int *hf_fip_flags_fields[] = {
 214     &hf_fip_flag_fpma,
 215     &hf_fip_flag_spma,
 216     &hf_fip_flag_rec_p2p,
 217     &hf_fip_flag_avail,
 218     &hf_fip_flag_sol,
 219     &hf_fip_flag_fport,
 220     NULL
 221 };
 222
 223 static int hf_fip_desc_type       = -1;
 224 static int hf_fip_desc_len        = -1;
 225 static int hf_fip_desc_pri        = -1;
 226 static int hf_fip_desc_mac        = -1;
 227 static int hf_fip_desc_map        = -1;
 228 static int hf_fip_desc_name       = -1;
 229 static int hf_fip_desc_fab_vfid   = -1;
 230 static int hf_fip_desc_fab_map    = -1;
 231 static int hf_fip_desc_fab_name   = -1;
 232 static int hf_fip_desc_fcoe_size  = -1;
 233 static int hf_fip_desc_vn_mac     = -1;
 234 static int hf_fip_desc_vn_fid     = -1;
 235 static int hf_fip_desc_vn_wwpn    = -1;
 236 static int hf_fip_desc_fka        = -1;
 237 static int hf_fip_desc_vend       = -1;
 238 static int hf_fip_desc_vend_data  = -1;
 239 static int hf_fip_desc_vlan       = -1;
 240 static int hf_fip_desc_unk        = -1;
 241 static int hf_fip_desc_fc4f_types = -1;
 242 static int hf_fip_desc_fcp_feat   = -1;
 243 static int hf_fip_type_ip         = -1;
 244 static int hf_fip_type_fcp        = -1;
 245 static int hf_fip_type_gs3        = -1;
 246 static int hf_fip_fcp_feat_i      = -1;
 247 static int hf_fip_fcp_feat_t      = -1;
 248
 249 static int ett_fip                = -1;
 250 static int ett_fip_flags          = -1;
 251 static int ett_fip_dt_pri         = -1;
 252 static int ett_fip_dt_mac         = -1;
 253 static int ett_fip_dt_map         = -1;
 254 static int ett_fip_dt_name        = -1;
 255 static int ett_fip_dt_fab         = -1;
 256 static int ett_fip_dt_mdl         = -1;
 257 static int ett_fip_dt_caps        = -1;
 258 static int ett_fip_dt_vn          = -1;
 259 static int ett_fip_dt_fka         = -1;
 260 static int ett_fip_dt_vend        = -1;
 261 static int ett_fip_dt_vlan        = -1;
 262 static int ett_fip_dt_unk         = -1;
 263 static int ett_fip_dt_fc4f        = -1;
 264 static int ett_fip_dt_fc4f_types  = -1;
 265 static int ett_fip_dt_fcp_feat    = -1;
 266
 267 static dissector_handle_t fc_handle;
 268
 269 /*
 270  * Insert common descriptor type and length fields.
 271  */
 272 static void
 273 fip_desc_type_len(proto_tree *tree, tvbuff_t *tvb)
 274 {
 275     proto_tree_add_item(tree, hf_fip_desc_type, tvb, 0, 1, ENC_BIG_ENDIAN);
 276     proto_tree_add_item(tree, hf_fip_desc_len, tvb, 1, 1, ENC_BIG_ENDIAN);
 277 }
 278
 279 /*
 280  * Dissect the FC-4 type features descriptor.
 281  */
 282 static void
 283 fip_desc_fc4f(tvbuff_t *tvb, proto_tree *tree, proto_item *item)
 284 {
 285     guint mask;
 286     guint offset;
 287
 288     static const int *types_word0[] = { /* types 0 - 31 */
 289         &hf_fip_type_ip,
 290         &hf_fip_type_fcp,
 291         NULL
 292     };
 293     static const int *types_word1[] = { /* types 32 - 63 */
 294         &hf_fip_type_gs3,
 295         NULL
 296     };
 297     static const int *fcp_feat[] = {
 298         &hf_fip_fcp_feat_t,
 299         &hf_fip_fcp_feat_i,
 300         NULL
 301     };
 302
 303     /*
 304      * First the 256-bit bitmask of types supported.
 305      */
 306     offset = 4;
 307     proto_tree_add_bitmask(tree, tvb, offset, hf_fip_desc_fc4f_types,
 308             ett_fip_dt_fc4f_types, types_word0, ENC_BIG_ENDIAN);
 309     offset += 4;
 310     proto_tree_add_bitmask(tree, tvb, offset, hf_fip_desc_fc4f_types,
 311             ett_fip_dt_fc4f_types, types_word1, ENC_BIG_ENDIAN);
 312     offset += 256 / 8 - 4;   /* skip to end of bitmask (32 bytes) */
 313
 314     /*
 315      * Next the 4-bit capabilities per type.
 316      * Only decode FCP (type 8) for now.
 317      */
 318     offset += 8 / 2;        /* skip first 8 types, 2 types per byte */
 319     proto_tree_add_bitmask(tree, tvb, offset, hf_fip_desc_fcp_feat,
 320             ett_fip_dt_fcp_feat, fcp_feat, ENC_BIG_ENDIAN);
 321     mask = tvb_get_ntohl(tvb, offset);
 322     if (mask & 1) {
 323         proto_item_append_text(item, "FCP Target ");
 324     }
 325     if (mask & 2) {
 326         proto_item_append_text(item, "FCP Initiator ");
 327     }
 328 }
 329
 330 static void
 331 dissect_fip(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 332 {
 333     guint       op;
 334     guint       sub;
 335     guint       rlen;
 336     proto_item *ti;
 337     proto_item *item;
 338     proto_tree *fip_tree;
 339     proto_tree *subtree;
 340     guint       dtype;
 341     guint       dlen;
 342     guint       desc_offset;
 343     guint       val;
 344     tvbuff_t   *desc_tvb;
 345     const char *info;
 346     const char *text;
 347
 348     col_set_str(pinfo->cinfo, COL_PROTOCOL, "FIP");
 349     col_clear(pinfo->cinfo, COL_INFO);
 350
 351     if (!tvb_bytes_exist(tvb, 0, FIP_HEADER_LEN)) {
 352         col_set_str(pinfo->cinfo, COL_INFO, "[packet too short]");
 353         if (tree)
 354             proto_tree_add_protocol_format(tree, proto_fip, tvb, 0,
 355                                             -1, "FIP [packet too short]");
 356         return;
 357     }
 358
 359     op  = tvb_get_ntohs(tvb, 2);
 360     sub = tvb_get_guint8(tvb, 5);
 361
 362     switch (op) {
 363     case FIP_OP_DISC:
 364         info = val_to_str(sub, fip_disc_subcodes, "Discovery 0x%x");
 365         break;
 366     case FIP_OP_LS:
 367         info = val_to_str(sub, fip_ls_subcodes, "Link Service 0x%x");
 368         break;
 369     case FIP_OP_CTRL:
 370         info = val_to_str(sub, fip_ctrl_subcodes, "Control 0x%x");
 371         break;
 372     case FIP_OP_VLAN:
 373         info = val_to_str(sub, fip_vlan_subcodes, "VLAN 0x%x");
 374         break;
 375     case FIP_OP_VN2VN:
 376         info = val_to_str(sub, fip_vn2vn_subcodes, "VN2VN 0x%x");
 377         break;
 378     default:
 379         info = val_to_str(op, fip_opcodes, "Unknown op 0x%x");
 380         break;
 381     }
 382
 383     col_add_str(pinfo->cinfo, COL_INFO, info);
 384
 385     rlen = tvb_get_ntohs(tvb, 6);
 386
 387     ti = proto_tree_add_protocol_format(tree, proto_fip, tvb, 0,
 388                                         FIP_HEADER_LEN + rlen * FIP_BPW,
 389                                         "FIP %s", info);
 390     fip_tree = proto_item_add_subtree(ti, ett_fip);
 391     proto_tree_add_item(fip_tree, hf_fip_ver, tvb, 0, 1, ENC_BIG_ENDIAN);
 392     proto_tree_add_item(fip_tree, hf_fip_op, tvb, 2, 2, ENC_BIG_ENDIAN);
 393     switch (op) {
 394     case FIP_OP_DISC:
 395         proto_tree_add_item(fip_tree, hf_fip_disc_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 396         break;
 397     case FIP_OP_LS:
 398         proto_tree_add_item(fip_tree, hf_fip_ls_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 399         break;
 400     case FIP_OP_CTRL:
 401         proto_tree_add_item(fip_tree, hf_fip_ctrl_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 402         break;
 403     case FIP_OP_VLAN:
 404         proto_tree_add_item(fip_tree, hf_fip_vlan_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 405         break;
 406     case FIP_OP_VN2VN:
 407         proto_tree_add_item(fip_tree, hf_fip_vn2vn_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 408         break;
 409     default:
 410         proto_tree_add_item(fip_tree, hf_fip_hex_subcode, tvb, 5, 1, ENC_BIG_ENDIAN);
 411         break;
 412     }
 413     proto_tree_add_item(fip_tree, hf_fip_dlen, tvb, 6, 2, ENC_BIG_ENDIAN);
 414
 415     proto_tree_add_bitmask(fip_tree, tvb, 8, hf_fip_flags,
 416             ett_fip_flags, hf_fip_flags_fields, ENC_BIG_ENDIAN);
 417
 418     desc_offset = FIP_HEADER_LEN;
 419     rlen *= FIP_BPW;
 420     proto_tree_add_text(fip_tree, tvb, desc_offset, rlen, "Descriptors:");
 421
 422     while ((rlen > 0) && tvb_bytes_exist(tvb, desc_offset, 2)) {
 423         dlen = tvb_get_guint8(tvb, desc_offset + 1) * FIP_BPW;
 424         if (!dlen) {
 425             proto_tree_add_text(fip_tree, tvb, desc_offset, -1,
 426                     "Descriptor [length error]");
 427             break;
 428         }
 429         if (!tvb_bytes_exist(tvb, desc_offset, dlen) || dlen > rlen) {
 430             break;
 431         }
 432         desc_tvb = tvb_new_subset(tvb, desc_offset, dlen, -1);
 433         dtype = tvb_get_guint8(desc_tvb, 0);
 434         desc_offset += dlen;
 435         rlen -= dlen;
 436
 437         item = proto_tree_add_text(fip_tree, desc_tvb, 0, -1, "Descriptor: %s ",
 438           val_to_str(dtype, fip_desc_types, "Unknown 0x%x"));
 439
 440         switch (dtype) {
 441         case FIP_DT_PRI:
 442             subtree = proto_item_add_subtree(item, ett_fip_dt_pri);
 443             fip_desc_type_len(subtree, desc_tvb);
 444             proto_tree_add_item(subtree, hf_fip_desc_pri, desc_tvb,
 445                     3, 1, ENC_BIG_ENDIAN);
 446             proto_item_append_text(item, "%u", tvb_get_guint8(desc_tvb, 3));
 447             break;
 448         case FIP_DT_MAC:
 449             subtree = proto_item_add_subtree(item, ett_fip_dt_mac);
 450             fip_desc_type_len(subtree, desc_tvb);
 451             proto_tree_add_item(subtree, hf_fip_desc_mac, desc_tvb,
 452                     2, 6, ENC_NA);
 453             proto_item_append_text(item, "%s",
 454                     tvb_bytes_to_str_punct(desc_tvb, 2, 6, ':'));
 455             break;
 456         case FIP_DT_MAP_OUI:
 457             subtree = proto_item_add_subtree(item, ett_fip_dt_map);
 458             fip_desc_type_len(subtree, desc_tvb);
 459             text = tvb_fc_to_str(desc_tvb, 5);
 460             proto_tree_add_string(subtree, hf_fip_desc_map, desc_tvb,
 461                     5, 3, text);
 462             proto_item_append_text(item, "%s", text);
 463             break;
 464         case FIP_DT_NAME:
 465             subtree = proto_item_add_subtree(item, ett_fip_dt_name);
 466             fip_desc_type_len(subtree, desc_tvb);
 467             text = tvb_fcwwn_to_str(desc_tvb, 4);
 468             proto_tree_add_string(subtree, hf_fip_desc_name,
 469                     desc_tvb, 4, 8, text);
 470             proto_item_append_text(item, "%s", text);
 471             break;
 472         case FIP_DT_FAB:
 473             subtree = proto_item_add_subtree(item, ett_fip_dt_fab);
 474             fip_desc_type_len(subtree, desc_tvb);
 475             proto_tree_add_item(subtree, hf_fip_desc_fab_vfid, desc_tvb,
 476                     2, 2, ENC_BIG_ENDIAN);
 477             text = tvb_fc_to_str(desc_tvb, 5);
 478             proto_tree_add_string(subtree, hf_fip_desc_fab_map, desc_tvb,
 479                     5, 3, text);
 480             text = tvb_fcwwn_to_str(desc_tvb, 8);
 481             proto_tree_add_string(subtree, hf_fip_desc_fab_name,
 482                     desc_tvb, 8, 8, text);
 483             proto_item_append_text(item, "%s", text);
 484             break;
 485         case FIP_DT_FCOE_SIZE:
 486             subtree = proto_item_add_subtree(item, ett_fip_dt_mdl);
 487             fip_desc_type_len(subtree, desc_tvb);
 488             proto_tree_add_item(subtree, hf_fip_desc_fcoe_size, desc_tvb,
 489                     2, 2, ENC_BIG_ENDIAN);
 490             proto_item_append_text(item, "%u", tvb_get_ntohs(desc_tvb, 2));
 491             break;
 492         case FIP_DT_FLOGI:
 493         case FIP_DT_FDISC:
 494         case FIP_DT_LOGO:
 495         case FIP_DT_ELP: {
 496             tvbuff_t *ls_tvb;
 497             subtree = proto_item_add_subtree(item, ett_fip_dt_caps);
 498             fip_desc_type_len(subtree, desc_tvb);
 499             ls_tvb = tvb_new_subset(desc_tvb, 4, dlen - 4, -1);
 500             call_dissector(fc_handle, ls_tvb, pinfo, subtree);
 501             proto_item_append_text(item, "%u bytes", dlen - 4);
 502         }
 503             break;
 504         case FIP_DT_VN:
 505             subtree = proto_item_add_subtree(item, ett_fip_dt_vn);
 506             fip_desc_type_len(subtree, desc_tvb);
 507             proto_tree_add_item(subtree, hf_fip_desc_vn_mac, desc_tvb,
 508                     2, 6, ENC_NA);
 509             proto_tree_add_item(subtree, hf_fip_desc_vn_fid, desc_tvb,
 510                     9, 3, ENC_BIG_ENDIAN);
 511             text = tvb_fcwwn_to_str(desc_tvb, 12);
 512             proto_tree_add_string(subtree, hf_fip_desc_vn_wwpn,
 513                     desc_tvb, 12, 8, text);
 514             proto_item_append_text(item, "MAC %s  FC_ID %6.6x",
 515                     tvb_bytes_to_str_punct(desc_tvb, 2, 6, ':'),
 516                     tvb_get_ntoh24(desc_tvb, 9));
 517             break;
 518         case FIP_DT_FKA:
 519             subtree = proto_item_add_subtree(item, ett_fip_dt_fka);
 520             fip_desc_type_len(subtree, desc_tvb);
 521             val = tvb_get_ntohl(desc_tvb, 4);
 522             proto_tree_add_uint_format_value(subtree, hf_fip_desc_fka,
 523                     desc_tvb, 4, 4, val, "%u ms", val);
 524             proto_item_append_text(item, "%u ms", val);
 525             break;
 526         case FIP_DT_VEND:
 527             subtree = proto_item_add_subtree(item, ett_fip_dt_vend);
 528             fip_desc_type_len(subtree, desc_tvb);
 529             proto_tree_add_item(subtree, hf_fip_desc_vend, desc_tvb,
 530                     4, 8, ENC_NA);
 531             if (tvb_bytes_exist(desc_tvb, 9, -1)) {
 532                 proto_tree_add_item(subtree, hf_fip_desc_vend_data,
 533                      desc_tvb, 9, -1, ENC_NA);
 534             }
 535             break;
 536         case FIP_DT_VLAN:
 537             subtree = proto_item_add_subtree(item, ett_fip_dt_vlan);
 538             fip_desc_type_len(subtree, desc_tvb);
 539             proto_tree_add_item(subtree, hf_fip_desc_vlan, desc_tvb,
 540                     2, 2, ENC_BIG_ENDIAN);
 541             proto_item_append_text(item, "%u", tvb_get_ntohs(desc_tvb, 2));
 542             break;
 543         case FIP_DT_FC4F:
 544             subtree = proto_item_add_subtree(item, ett_fip_dt_fc4f);
 545             fip_desc_type_len(subtree, desc_tvb);
 546             fip_desc_fc4f(desc_tvb, subtree, item);
 547             break;
 548         default:
 549             subtree = proto_item_add_subtree(item, ett_fip_dt_unk);
 550             fip_desc_type_len(subtree, desc_tvb);
 551             proto_tree_add_item(subtree, hf_fip_desc_unk, desc_tvb,
 552                     2, -1, ENC_NA);
 553             break;
 554         }
 555     }
 556 }
 557
 558 void
 559 proto_register_fip(void)
 560 {
 561     /* Setup list of header fields  See Section 1.6.1 for details*/
 562     static hf_register_info hf[] = {
 563         /*
 564          * FIP header fields.
 565          */
 566         { &hf_fip_ver,
 567           { "Version", "fip.ver",
 568             FT_UINT8, BASE_DEC, NULL, 0xf0,
 569             NULL, HFILL}},
 570
 571
 572         { &hf_fip_op,
 573           { "Opcode", "fip.opcode",
 574             FT_UINT16, BASE_HEX, VALS(fip_opcodes), 0,
 575             NULL, HFILL}},
 576
 577         { &hf_fip_disc_subcode,
 578           { "Discovery Subcode", "fip.disc_subcode",
 579             FT_UINT8, BASE_HEX, VALS(fip_disc_subcodes), 0,
 580             NULL, HFILL}},
 581
 582         { &hf_fip_ls_subcode,
 583           { "Link Service Subcode", "fip.ls.subcode",
 584             FT_UINT8, BASE_HEX, VALS(fip_ls_subcodes), 0,
 585             NULL, HFILL}},
 586
 587         { &hf_fip_ctrl_subcode,
 588           { "Control Subcode", "fip.ctrl_subcode",
 589             FT_UINT8, BASE_HEX, VALS(fip_ctrl_subcodes), 0,
 590             NULL, HFILL}},
 591
 592         { &hf_fip_vlan_subcode,
 593           { "VLAN Subcode", "fip.vlan_subcode",
 594             FT_UINT8, BASE_HEX, VALS(fip_vlan_subcodes), 0,
 595             NULL, HFILL}},
 596
 597         { &hf_fip_vn2vn_subcode,
 598           { "VN2VN Subcode", "fip.vn2vn_subcode",
 599             FT_UINT8, BASE_HEX, VALS(fip_vn2vn_subcodes), 0,
 600             NULL, HFILL}},
 601
 602         { &hf_fip_hex_subcode,
 603           { "Unknown Subcode", "fip.subcode",
 604             FT_UINT8, BASE_HEX, NULL, 0,
 605             NULL, HFILL}},
 606
 607         { &hf_fip_dlen,
 608           { "Length of Descriptors (words)", "fip.dl_len",
 609             FT_UINT16, BASE_DEC, NULL, 0,
 610             NULL, HFILL}},
 611
 612         { &hf_fip_flags,
 613           { "Flags", "fip.flags",
 614             FT_UINT16, BASE_HEX, NULL, 0,
 615             NULL, HFILL}},
 616
 617         { &hf_fip_flag_fpma,
 618           { "Fabric Provided MAC addr", "fip.flags.fpma",
 619             FT_BOOLEAN, 16, NULL, FIP_FL_FPMA,
 620             NULL, HFILL}},
 621
 622         { &hf_fip_flag_spma,
 623           { "Server Provided MAC addr", "fip.flags.spma",
 624             FT_BOOLEAN, 16, NULL, FIP_FL_SPMA,
 625             NULL, HFILL}},
 626
 627         { &hf_fip_flag_rec_p2p,
 628           { "REC/P2P", "fip.flags.rec_p2p",
 629             FT_BOOLEAN, 16, NULL, FIP_FL_REC_P2P,
 630             NULL, HFILL}},
 631
 632         { &hf_fip_flag_avail,
 633           { "Available", "fip.flags.available",
 634             FT_BOOLEAN, 16, NULL, FIP_FL_AVAIL,
 635             NULL, HFILL}},
 636
 637         { &hf_fip_flag_sol,
 638           { "Solicited", "fip.flags.sol",
 639             FT_BOOLEAN, 16, NULL, FIP_FL_SOL,
 640             NULL, HFILL}},
 641
 642         { &hf_fip_flag_fport,
 643           { "F_Port", "fip.flags.fport",
 644             FT_BOOLEAN, 16, NULL, FIP_FL_FPORT,
 645             NULL, HFILL}},
 646
 647         { &hf_fip_desc_type,
 648           { "Descriptor Type", "fip.desc_type",
 649             FT_UINT8, BASE_HEX, VALS(fip_desc_types), 0,
 650             NULL, HFILL}},
 651
 652         { &hf_fip_desc_len,
 653           { "Descriptor Length (words)", "fip.desc_len",
 654             FT_UINT8, BASE_DEC, NULL, 0,
 655             NULL, HFILL}},
 656
 657         /*
 658          * Various descriptor fields.
 659          */
 660         { &hf_fip_desc_pri,
 661           { "Priority", "fip.pri",
 662             FT_UINT8, BASE_DEC, NULL, 0,
 663             NULL, HFILL}},
 664
 665         { &hf_fip_desc_mac,
 666           { "MAC Address", "fip.mac",
 667             FT_ETHER, BASE_NONE, NULL, 0,
 668             NULL, HFILL}},
 669
 670         { &hf_fip_desc_map,
 671           { "FC-MAP-OUI", "fip.map",
 672             FT_STRING, BASE_NONE, NULL, 0,
 673             NULL, HFILL}},
 674
 675         { &hf_fip_desc_name,
 676           { "Switch or Node Name", "fip.name",
 677             FT_STRING, BASE_NONE, NULL, 0,
 678             NULL, HFILL}},
 679
 680         { &hf_fip_desc_fab_vfid,
 681           { "VFID", "fip.fab.vfid",
 682             FT_UINT16, BASE_DEC, NULL, 0,
 683             NULL, HFILL}},
 684
 685         { &hf_fip_desc_fab_map,
 686           { "FC-MAP", "fip.fab.map",
 687             FT_STRING, BASE_NONE, NULL, 0,
 688             NULL, HFILL}},
 689
 690         { &hf_fip_desc_fab_name,
 691           { "Fabric Name", "fip.fab.name",
 692             FT_STRING, BASE_NONE, NULL, 0,
 693             NULL, HFILL}},
 694
 695         { &hf_fip_desc_fcoe_size,
 696           { "Max FCoE frame size", "fip.fcoe_size",
 697             FT_UINT16, BASE_DEC, NULL, 0,
 698             NULL, HFILL}},
 699
 700         { &hf_fip_desc_vn_mac,
 701           { "VN_Port MAC Address", "fip.vn.mac",
 702             FT_ETHER, BASE_NONE, NULL, 0,
 703             NULL, HFILL}},
 704
 705         { &hf_fip_desc_vn_fid,
 706           { "VN_Port FC_ID", "fip.vn.fc_id",
 707             FT_UINT32, BASE_HEX, NULL, 0,
 708             NULL, HFILL}},
 709
 710         { &hf_fip_desc_vn_wwpn,
 711           { "Port Name", "fip.vn.pwwn",
 712             FT_STRING, BASE_NONE, NULL, 0,
 713             NULL, HFILL}},
 714
 715         { &hf_fip_desc_fka,
 716           { "FKA_ADV_Period", "fip.fka",
 717             FT_UINT32, BASE_DEC, NULL, 0,
 718             NULL, HFILL}},
 719
 720         { &hf_fip_desc_vend,
 721           { "Vendor-ID", "fip.vendor",
 722             FT_BYTES, BASE_NONE, NULL, 0,
 723             NULL, HFILL}},
 724
 725         { &hf_fip_desc_vend_data,
 726           { "Vendor-specific data", "fip.vendor.data",
 727             FT_BYTES, BASE_NONE, NULL, 0,
 728             NULL, HFILL}},
 729
 730         { &hf_fip_desc_vlan,
 731           { "VLAN", "fip.vlan",
 732             FT_UINT16, BASE_DEC, NULL, 0,
 733             NULL, HFILL}},
 734
 735         { &hf_fip_desc_fc4f_types,
 736           { "FC4 Types", "fip.fc4f.types",
 737             FT_UINT32, BASE_HEX, NULL, 0,
 738             NULL, HFILL}},
 739
 740         { &hf_fip_desc_fcp_feat,
 741           { "FCP Features", "fip.fc4f.feat.fcp",
 742             FT_UINT32, BASE_HEX, NULL, 0xf,
 743             NULL, HFILL}},
 744
 745         { &hf_fip_type_ip,
 746           { "IP", "fip.fc4f.ip",
 747             FT_BOOLEAN, 32, NULL, 1 << 5,
 748             NULL, HFILL}},
 749
 750         { &hf_fip_type_fcp,
 751           { "FCP", "fip.fc4f.fcp",
 752             FT_BOOLEAN, 32, NULL, 1 << 8,
 753             NULL, HFILL}},
 754
 755         { &hf_fip_type_gs3,
 756           { "GS3", "fip.fc4f.gs3",
 757             FT_BOOLEAN, 32, NULL, 1 << 0,
 758             NULL, HFILL}},
 759
 760         { &hf_fip_fcp_feat_t,
 761           { "FCP Target", "fip.fc4f.feat.fcp.target",
 762             FT_BOOLEAN, 32, NULL, 1,
 763             NULL, HFILL}},
 764
 765         { &hf_fip_fcp_feat_i,
 766           { "FCP Initiator", "fip.fc4f.feat.fcp.initiator",
 767             FT_BOOLEAN, 32, NULL, 2,
 768             NULL, HFILL}},
 769
 770         { &hf_fip_desc_unk,
 771           { "Unknown Descriptor", "fip.desc",
 772             FT_BYTES, BASE_NONE, NULL, 0,
 773             NULL, HFILL}}
 774
 775     };
 776     static gint *ett[] = {
 777         &ett_fip,
 778         &ett_fip_flags,
 779         &ett_fip_dt_pri,
 780         &ett_fip_dt_mac,
 781         &ett_fip_dt_map,
 782         &ett_fip_dt_name,
 783         &ett_fip_dt_fab,
 784         &ett_fip_dt_mdl,
 785         &ett_fip_dt_caps,
 786         &ett_fip_dt_vn,
 787         &ett_fip_dt_fka,
 788         &ett_fip_dt_vend,
 789         &ett_fip_dt_vlan,
 790         &ett_fip_dt_fc4f,
 791         &ett_fip_dt_fc4f_types,
 792         &ett_fip_dt_fcp_feat,
 793         &ett_fip_dt_unk
 794     };
 795
 796     /* Register the protocol name and description */
 797     proto_fip = proto_register_protocol("FCoE Initialization Protocol",
 798         "FIP", "fip");
 799
 800     /* Required function calls to register the header fields and
 801      * subtrees used */
 802     proto_register_field_array(proto_fip, hf, array_length(hf));
 803     proto_register_subtree_array(ett, array_length(ett));
 804 }
 805
 806 /*
 807  * This function name is required because a script is used to find these
 808  * routines and create the code that calls these routines.
 809  */
 810 void
 811 proto_reg_handoff_fip(void)
 812 {
 813     dissector_handle_t fip_handle;
 814
 815     fip_handle = create_dissector_handle(dissect_fip, proto_fip);
 816     dissector_add_uint("ethertype", ETHERTYPE_FIP, fip_handle);
 817     fc_handle = find_dissector("fc");
 818 }