drivers/scsi/libfc/fc_encode.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright(c) 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Maintained at www.Open-FCoE.org
   6  */
   7
   8 #ifndef _FC_ENCODE_H_
   9 #define _FC_ENCODE_H_
  10 #include <asm/unaligned.h>
  11 #include <linux/utsname.h>
  12 #include <scsi/fc/fc_ms.h>
  13
  14 /*
  15  * F_CTL values for simple requests and responses.
  16  */
  17 #define FC_FCTL_REQ     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  18 #define FC_FCTL_RESP    (FC_FC_EX_CTX | FC_FC_LAST_SEQ | \
  19                         FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  20
  21 struct fc_ns_rft {
  22         struct fc_ns_fid fid;   /* port ID object */
  23         struct fc_ns_fts fts;   /* FC4-types object */
  24 };
  25
  26 struct fc_ct_req {
  27         struct fc_ct_hdr hdr;
  28         union {
  29                 struct fc_ns_gid_ft gid;
  30                 struct fc_ns_rn_id  rn;
  31                 struct fc_ns_rft rft;
  32                 struct fc_ns_rff_id rff;
  33                 struct fc_ns_fid fid;
  34                 struct fc_ns_rsnn snn;
  35                 struct fc_ns_rspn spn;
  36                 struct fc_fdmi_rhba rhba;
  37                 struct fc_fdmi_rpa  rpa;
  38                 struct fc_fdmi_dprt dprt;
  39                 struct fc_fdmi_dhba dhba;
  40         } payload;
  41 };
  42
  43 /**
  44  * fc_adisc_fill() - Fill in adisc request frame
  45  * @lport: local port.
  46  * @fp: fc frame where payload will be placed.
  47  */
  48 static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
  49 {
  50         struct fc_els_adisc *adisc;
  51
  52         adisc = fc_frame_payload_get(fp, sizeof(*adisc));
  53         memset(adisc, 0, sizeof(*adisc));
  54         adisc->adisc_cmd = ELS_ADISC;
  55         put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
  56         put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
  57         hton24(adisc->adisc_port_id, lport->port_id);
  58 }
  59
  60 /**
  61  * fc_ct_hdr_fill- fills ct header and reset ct payload
  62  * returns pointer to ct request.
  63  */
  64 static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
  65                                                unsigned int op, size_t req_size,
  66                                                enum fc_ct_fs_type fs_type,
  67                                                u8 subtype)
  68 {
  69         struct fc_ct_req *ct;
  70         size_t ct_plen;
  71
  72         ct_plen  = sizeof(struct fc_ct_hdr) + req_size;
  73         ct = fc_frame_payload_get(fp, ct_plen);
  74         memset(ct, 0, ct_plen);
  75         ct->hdr.ct_rev = FC_CT_REV;
  76         ct->hdr.ct_fs_type = fs_type;
  77         ct->hdr.ct_fs_subtype = subtype;
  78         ct->hdr.ct_cmd = htons((u16) op);
  79         return ct;
  80 }
  81
  82 /**
  83  * fc_ct_ns_fill() - Fill in a name service request frame
  84  * @lport: local port.
  85  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
  86  * @fp: frame to contain payload.
  87  * @op: CT opcode.
  88  * @r_ctl: pointer to FC header R_CTL.
  89  * @fh_type: pointer to FC-4 type.
  90  */
  91 static inline int fc_ct_ns_fill(struct fc_lport *lport,
  92                       u32 fc_id, struct fc_frame *fp,
  93                       unsigned int op, enum fc_rctl *r_ctl,
  94                       enum fc_fh_type *fh_type)
  95 {
  96         struct fc_ct_req *ct;
  97         size_t len;
  98
  99         switch (op) {
 100         case FC_NS_GPN_FT:
 101                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft),
 102                                     FC_FST_DIR, FC_NS_SUBTYPE);
 103                 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 104                 break;
 105
 106         case FC_NS_GPN_ID:
 107                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid),
 108                                     FC_FST_DIR, FC_NS_SUBTYPE);
 109                 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 110                 hton24(ct->payload.fid.fp_fid, fc_id);
 111                 break;
 112
 113         case FC_NS_RFT_ID:
 114                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft),
 115                                     FC_FST_DIR, FC_NS_SUBTYPE);
 116                 hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
 117                 ct->payload.rft.fts = lport->fcts;
 118                 break;
 119
 120         case FC_NS_RFF_ID:
 121                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id),
 122                                     FC_FST_DIR, FC_NS_SUBTYPE);
 123                 hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
 124                 ct->payload.rff.fr_type = FC_TYPE_FCP;
 125                 if (lport->service_params & FCP_SPPF_INIT_FCN)
 126                         ct->payload.rff.fr_feat = FCP_FEAT_INIT;
 127                 if (lport->service_params & FCP_SPPF_TARG_FCN)
 128                         ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
 129                 break;
 130
 131         case FC_NS_RNN_ID:
 132                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id),
 133                                     FC_FST_DIR, FC_NS_SUBTYPE);
 134                 hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
 135                 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
 136                 break;
 137
 138         case FC_NS_RSPN_ID:
 139                 len = strnlen(fc_host_symbolic_name(lport->host), 255);
 140                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len,
 141                                     FC_FST_DIR, FC_NS_SUBTYPE);
 142                 hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
 143                 strncpy(ct->payload.spn.fr_name,
 144                         fc_host_symbolic_name(lport->host), len);
 145                 ct->payload.spn.fr_name_len = len;
 146                 break;
 147
 148         case FC_NS_RSNN_NN:
 149                 len = strnlen(fc_host_symbolic_name(lport->host), 255);
 150                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len,
 151                                     FC_FST_DIR, FC_NS_SUBTYPE);
 152                 put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
 153                 strncpy(ct->payload.snn.fr_name,
 154                         fc_host_symbolic_name(lport->host), len);
 155                 ct->payload.snn.fr_name_len = len;
 156                 break;
 157
 158         default:
 159                 return -EINVAL;
 160         }
 161         *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 162         *fh_type = FC_TYPE_CT;
 163         return 0;
 164 }
 165
 166 static inline void fc_ct_ms_fill_attr(struct fc_fdmi_attr_entry *entry,
 167                                     const char *in, size_t len)
 168 {
 169         int copied;
 170
 171         copied = strscpy(entry->value, in, len);
 172         if (copied > 0 && copied + 1 < len)
 173                 memset(entry->value + copied + 1, 0, len - copied - 1);
 174 }
 175
 176 /**
 177  * fc_ct_ms_fill() - Fill in a mgmt service request frame
 178  * @lport: local port.
 179  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 180  * @fp: frame to contain payload.
 181  * @op: CT opcode.
 182  * @r_ctl: pointer to FC header R_CTL.
 183  * @fh_type: pointer to FC-4 type.
 184  */
 185 static inline int fc_ct_ms_fill(struct fc_lport *lport,
 186                       u32 fc_id, struct fc_frame *fp,
 187                       unsigned int op, enum fc_rctl *r_ctl,
 188                       enum fc_fh_type *fh_type)
 189 {
 190         struct fc_ct_req *ct;
 191         size_t len;
 192         struct fc_fdmi_attr_entry *entry;
 193         struct fs_fdmi_attrs *hba_attrs;
 194         int numattrs = 0;
 195         struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
 196
 197         switch (op) {
 198         case FC_FDMI_RHBA:
 199                 numattrs = 11;
 200                 len = sizeof(struct fc_fdmi_rhba);
 201                 len -= sizeof(struct fc_fdmi_attr_entry);
 202                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 203                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 204                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 205                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 206                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 207                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 208                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 209                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 210                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 211                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 212                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 213                 len += FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN;
 214
 215                 if (fc_host->fdmi_version == FDMI_V2) {
 216                         numattrs += 7;
 217                         len += FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN;
 218                         len += FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN;
 219                         len += FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN;
 220                         len += FC_FDMI_HBA_ATTR_FABRICNAME_LEN;
 221                         len += FC_FDMI_HBA_ATTR_BIOSVERSION_LEN;
 222                         len += FC_FDMI_HBA_ATTR_BIOSSTATE_LEN;
 223                         len += FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN;
 224                 }
 225
 226                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 227                                 FC_FDMI_SUBTYPE);
 228
 229                 /* HBA Identifier */
 230                 put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id);
 231                 /* Number of Ports - always 1 */
 232                 put_unaligned_be32(1, &ct->payload.rhba.port.numport);
 233                 /* Port Name */
 234                 put_unaligned_be64(lport->wwpn,
 235                                    &ct->payload.rhba.port.port[0].portname);
 236
 237                 /* HBA Attributes */
 238                 put_unaligned_be32(numattrs,
 239                                    &ct->payload.rhba.hba_attrs.numattrs);
 240                 hba_attrs = &ct->payload.rhba.hba_attrs;
 241                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 242                 /* NodeName*/
 243                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 244                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 245                 put_unaligned_be16(FC_FDMI_HBA_ATTR_NODENAME,
 246                                    &entry->type);
 247                 put_unaligned_be16(len, &entry->len);
 248                 put_unaligned_be64(lport->wwnn,
 249                                    (__be64 *)&entry->value);
 250
 251                 /* Manufacturer */
 252                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 253                                         FC_FDMI_HBA_ATTR_NODENAME_LEN);
 254                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 255                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 256                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MANUFACTURER,
 257                                    &entry->type);
 258                 put_unaligned_be16(len, &entry->len);
 259                 fc_ct_ms_fill_attr(entry,
 260                         fc_host_manufacturer(lport->host),
 261                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 262
 263                 /* SerialNumber */
 264                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 265                                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 266                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 267                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 268                 put_unaligned_be16(FC_FDMI_HBA_ATTR_SERIALNUMBER,
 269                                    &entry->type);
 270                 put_unaligned_be16(len, &entry->len);
 271                 fc_ct_ms_fill_attr(entry,
 272                         fc_host_serial_number(lport->host),
 273                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 274
 275                 /* Model */
 276                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 277                                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 278                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 279                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 280                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODEL,
 281                                    &entry->type);
 282                 put_unaligned_be16(len, &entry->len);
 283                 fc_ct_ms_fill_attr(entry,
 284                         fc_host_model(lport->host),
 285                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 286
 287                 /* Model Description */
 288                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 289                                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 290                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 291                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 292                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODELDESCRIPTION,
 293                                    &entry->type);
 294                 put_unaligned_be16(len, &entry->len);
 295                 fc_ct_ms_fill_attr(entry,
 296                         fc_host_model_description(lport->host),
 297                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 298
 299                 /* Hardware Version */
 300                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 301                                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 302                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 303                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 304                 put_unaligned_be16(FC_FDMI_HBA_ATTR_HARDWAREVERSION,
 305                                    &entry->type);
 306                 put_unaligned_be16(len, &entry->len);
 307                 fc_ct_ms_fill_attr(entry,
 308                         fc_host_hardware_version(lport->host),
 309                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 310
 311                 /* Driver Version */
 312                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 313                                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 314                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 315                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 316                 put_unaligned_be16(FC_FDMI_HBA_ATTR_DRIVERVERSION,
 317                                    &entry->type);
 318                 put_unaligned_be16(len, &entry->len);
 319                 fc_ct_ms_fill_attr(entry,
 320                         fc_host_driver_version(lport->host),
 321                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 322
 323                 /* OptionROM Version */
 324                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 325                                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 326                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 327                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 328                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OPTIONROMVERSION,
 329                                    &entry->type);
 330                 put_unaligned_be16(len, &entry->len);
 331                 fc_ct_ms_fill_attr(entry,
 332                         "unknown",
 333                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 334
 335                 /* Firmware Version */
 336                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 337                                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 338                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 339                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 340                 put_unaligned_be16(FC_FDMI_HBA_ATTR_FIRMWAREVERSION,
 341                                    &entry->type);
 342                 put_unaligned_be16(len, &entry->len);
 343                 fc_ct_ms_fill_attr(entry,
 344                         fc_host_firmware_version(lport->host),
 345                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 346
 347                 /* OS Name and Version */
 348                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 349                                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 350                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 351                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 352                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OSNAMEVERSION,
 353                                    &entry->type);
 354                 put_unaligned_be16(len, &entry->len);
 355                 snprintf((char *)&entry->value,
 356                         FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN,
 357                         "%s v%s",
 358                         init_utsname()->sysname,
 359                         init_utsname()->release);
 360
 361                 /* Max CT payload */
 362                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 363                                         FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN);
 364                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 365                 len += FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN;
 366                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MAXCTPAYLOAD,
 367                                 &entry->type);
 368                 put_unaligned_be16(len, &entry->len);
 369                 put_unaligned_be32(fc_host_max_ct_payload(lport->host),
 370                                 &entry->value);
 371
 372                 if (fc_host->fdmi_version == FDMI_V2) {
 373                         /* Node symbolic name */
 374                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 375                                         FC_FDMI_HBA_ATTR_MAXCTPAYLOAD_LEN);
 376                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 377                         len += FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN;
 378                         put_unaligned_be16(FC_FDMI_HBA_ATTR_NODESYMBLNAME,
 379                                         &entry->type);
 380                         put_unaligned_be16(len, &entry->len);
 381                         fc_ct_ms_fill_attr(entry,
 382                                         fc_host_symbolic_name(lport->host),
 383                                         FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN);
 384
 385                         /* Vendor specific info */
 386                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 387                                         FC_FDMI_HBA_ATTR_NODESYMBLNAME_LEN);
 388                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 389                         len += FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN;
 390                         put_unaligned_be16(FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO,
 391                                         &entry->type);
 392                         put_unaligned_be16(len, &entry->len);
 393                         put_unaligned_be32(0,
 394                                         &entry->value);
 395
 396                         /* Number of ports */
 397                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 398                                         FC_FDMI_HBA_ATTR_VENDORSPECIFICINFO_LEN);
 399                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 400                         len += FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN;
 401                         put_unaligned_be16(FC_FDMI_HBA_ATTR_NUMBEROFPORTS,
 402                                         &entry->type);
 403                         put_unaligned_be16(len, &entry->len);
 404                         put_unaligned_be32(fc_host_num_ports(lport->host),
 405                                         &entry->value);
 406
 407                         /* Fabric name */
 408                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 409                                         FC_FDMI_HBA_ATTR_NUMBEROFPORTS_LEN);
 410                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 411                         len += FC_FDMI_HBA_ATTR_FABRICNAME_LEN;
 412                         put_unaligned_be16(FC_FDMI_HBA_ATTR_FABRICNAME,
 413                                         &entry->type);
 414                         put_unaligned_be16(len, &entry->len);
 415                         put_unaligned_be64(fc_host_fabric_name(lport->host),
 416                                         &entry->value);
 417
 418                         /* BIOS version */
 419                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 420                                         FC_FDMI_HBA_ATTR_FABRICNAME_LEN);
 421                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 422                         len += FC_FDMI_HBA_ATTR_BIOSVERSION_LEN;
 423                         put_unaligned_be16(FC_FDMI_HBA_ATTR_BIOSVERSION,
 424                                         &entry->type);
 425                         put_unaligned_be16(len, &entry->len);
 426                         fc_ct_ms_fill_attr(entry,
 427                                         fc_host_bootbios_version(lport->host),
 428                                         FC_FDMI_HBA_ATTR_BIOSVERSION_LEN);
 429
 430                         /* BIOS state */
 431                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 432                                         FC_FDMI_HBA_ATTR_BIOSVERSION_LEN);
 433                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 434                         len += FC_FDMI_HBA_ATTR_BIOSSTATE_LEN;
 435                         put_unaligned_be16(FC_FDMI_HBA_ATTR_BIOSSTATE,
 436                                         &entry->type);
 437                         put_unaligned_be16(len, &entry->len);
 438                         put_unaligned_be32(fc_host_bootbios_state(lport->host),
 439                                         &entry->value);
 440
 441                         /* Vendor identifier  */
 442                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 443                                         FC_FDMI_HBA_ATTR_BIOSSTATE_LEN);
 444                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 445                         len += FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN;
 446                         put_unaligned_be16(FC_FDMI_HBA_ATTR_VENDORIDENTIFIER,
 447                                         &entry->type);
 448                         put_unaligned_be16(len, &entry->len);
 449                         fc_ct_ms_fill_attr(entry,
 450                                         fc_host_vendor_identifier(lport->host),
 451                                         FC_FDMI_HBA_ATTR_VENDORIDENTIFIER_LEN);
 452                 }
 453
 454                 break;
 455         case FC_FDMI_RPA:
 456                 numattrs = 6;
 457                 len = sizeof(struct fc_fdmi_rpa);
 458                 len -= sizeof(struct fc_fdmi_attr_entry);
 459                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 460                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 461                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 462                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 463                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 464                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 465                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 466
 467
 468                 if (fc_host->fdmi_version == FDMI_V2) {
 469                         numattrs += 10;
 470
 471                         len += FC_FDMI_PORT_ATTR_NODENAME_LEN;
 472                         len += FC_FDMI_PORT_ATTR_PORTNAME_LEN;
 473                         len += FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN;
 474                         len += FC_FDMI_PORT_ATTR_PORTTYPE_LEN;
 475                         len += FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN;
 476                         len += FC_FDMI_PORT_ATTR_FABRICNAME_LEN;
 477                         len += FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN;
 478                         len += FC_FDMI_PORT_ATTR_PORTSTATE_LEN;
 479                         len += FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN;
 480                         len += FC_FDMI_PORT_ATTR_PORTID_LEN;
 481
 482                 }
 483
 484                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 485                                     FC_FDMI_SUBTYPE);
 486
 487                 /* Port Name */
 488                 put_unaligned_be64(lport->wwpn,
 489                                    &ct->payload.rpa.port.portname);
 490
 491                 /* Port Attributes */
 492                 put_unaligned_be32(numattrs,
 493                                    &ct->payload.rpa.hba_attrs.numattrs);
 494
 495                 hba_attrs = &ct->payload.rpa.hba_attrs;
 496                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 497
 498                 /* FC4 types */
 499                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 500                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 501                 put_unaligned_be16(FC_FDMI_PORT_ATTR_FC4TYPES,
 502                                    &entry->type);
 503                 put_unaligned_be16(len, &entry->len);
 504                 memcpy(&entry->value, fc_host_supported_fc4s(lport->host),
 505                        FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 506
 507                 /* Supported Speed */
 508                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 509                                         FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 510                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 511                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 512                 put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDSPEED,
 513                                    &entry->type);
 514                 put_unaligned_be16(len, &entry->len);
 515
 516                 put_unaligned_be32(fc_host_supported_speeds(lport->host),
 517                                    &entry->value);
 518
 519                 /* Current Port Speed */
 520                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 521                                         FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN);
 522                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 523                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 524                 put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTPORTSPEED,
 525                                    &entry->type);
 526                 put_unaligned_be16(len, &entry->len);
 527                 put_unaligned_be32(lport->link_speed,
 528                                    &entry->value);
 529
 530                 /* Max Frame Size */
 531                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 532                                         FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN);
 533                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 534                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 535                 put_unaligned_be16(FC_FDMI_PORT_ATTR_MAXFRAMESIZE,
 536                                    &entry->type);
 537                 put_unaligned_be16(len, &entry->len);
 538                 put_unaligned_be32(fc_host_maxframe_size(lport->host),
 539                                    &entry->value);
 540
 541                 /* OS Device Name */
 542                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 543                                         FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN);
 544                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 545                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 546                 put_unaligned_be16(FC_FDMI_PORT_ATTR_OSDEVICENAME,
 547                                    &entry->type);
 548                 put_unaligned_be16(len, &entry->len);
 549                 /* Use the sysfs device name */
 550                 fc_ct_ms_fill_attr(entry,
 551                         dev_name(&lport->host->shost_gendev),
 552                         strnlen(dev_name(&lport->host->shost_gendev),
 553                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 554
 555                 /* Host Name */
 556                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 557                                         FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN);
 558                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 559                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 560                 put_unaligned_be16(FC_FDMI_PORT_ATTR_HOSTNAME,
 561                                    &entry->type);
 562                 put_unaligned_be16(len, &entry->len);
 563                 if (strlen(fc_host_system_hostname(lport->host)))
 564                         fc_ct_ms_fill_attr(entry,
 565                                 fc_host_system_hostname(lport->host),
 566                                 strnlen(fc_host_system_hostname(lport->host),
 567                                         FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 568                 else
 569                         fc_ct_ms_fill_attr(entry,
 570                                 init_utsname()->nodename,
 571                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN);
 572
 573
 574                 if (fc_host->fdmi_version == FDMI_V2) {
 575
 576                         /* Node name */
 577                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 578                                         FC_FDMI_PORT_ATTR_HOSTNAME_LEN);
 579                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 580                         len += FC_FDMI_PORT_ATTR_NODENAME_LEN;
 581                         put_unaligned_be16(FC_FDMI_PORT_ATTR_NODENAME,
 582                                         &entry->type);
 583                         put_unaligned_be16(len, &entry->len);
 584                         put_unaligned_be64(fc_host_node_name(lport->host),
 585                                         &entry->value);
 586
 587                         /* Port name  */
 588                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 589                                         FC_FDMI_PORT_ATTR_NODENAME_LEN);
 590                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 591                         len += FC_FDMI_PORT_ATTR_PORTNAME_LEN;
 592                         put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTNAME,
 593                                         &entry->type);
 594                         put_unaligned_be16(len, &entry->len);
 595                         put_unaligned_be64(lport->wwpn,
 596                                         &entry->value);
 597
 598                         /* Port symbolic name */
 599                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 600                                         FC_FDMI_PORT_ATTR_PORTNAME_LEN);
 601                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 602                         len += FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN;
 603                         put_unaligned_be16(FC_FDMI_PORT_ATTR_SYMBOLICNAME,
 604                                         &entry->type);
 605                         put_unaligned_be16(len, &entry->len);
 606                         fc_ct_ms_fill_attr(entry,
 607                                         fc_host_symbolic_name(lport->host),
 608                                         FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN);
 609
 610                         /* Port type */
 611                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 612                                         FC_FDMI_PORT_ATTR_SYMBOLICNAME_LEN);
 613                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 614                         len += FC_FDMI_PORT_ATTR_PORTTYPE_LEN;
 615                         put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTTYPE,
 616                                         &entry->type);
 617                         put_unaligned_be16(len, &entry->len);
 618                         put_unaligned_be32(fc_host_port_type(lport->host),
 619                                         &entry->value);
 620
 621                         /* Supported class of service */
 622                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 623                                         FC_FDMI_PORT_ATTR_PORTTYPE_LEN);
 624                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 625                         len += FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN;
 626                         put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC,
 627                                         &entry->type);
 628                         put_unaligned_be16(len, &entry->len);
 629                         put_unaligned_be32(fc_host_supported_classes(lport->host),
 630                                         &entry->value);
 631
 632                         /* Port Fabric name */
 633                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 634                                         FC_FDMI_PORT_ATTR_SUPPORTEDCLASSSRVC_LEN);
 635                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 636                         len += FC_FDMI_PORT_ATTR_FABRICNAME_LEN;
 637                         put_unaligned_be16(FC_FDMI_PORT_ATTR_FABRICNAME,
 638                                         &entry->type);
 639                         put_unaligned_be16(len, &entry->len);
 640                         put_unaligned_be64(fc_host_fabric_name(lport->host),
 641                                         &entry->value);
 642
 643                         /* Port active FC-4 */
 644                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 645                                         FC_FDMI_PORT_ATTR_FABRICNAME_LEN);
 646                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 647                         len += FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN;
 648                         put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTFC4TYPE,
 649                                         &entry->type);
 650                         put_unaligned_be16(len, &entry->len);
 651                         memcpy(&entry->value, fc_host_active_fc4s(lport->host),
 652                                         FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN);
 653
 654                         /* Port state */
 655                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 656                                         FC_FDMI_PORT_ATTR_CURRENTFC4TYPE_LEN);
 657                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 658                         len += FC_FDMI_PORT_ATTR_PORTSTATE_LEN;
 659                         put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTSTATE,
 660                                         &entry->type);
 661                         put_unaligned_be16(len, &entry->len);
 662                         put_unaligned_be32(fc_host_port_state(lport->host),
 663                                         &entry->value);
 664
 665                         /* Discovered ports */
 666                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 667                                         FC_FDMI_PORT_ATTR_PORTSTATE_LEN);
 668                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 669                         len += FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN;
 670                         put_unaligned_be16(FC_FDMI_PORT_ATTR_DISCOVEREDPORTS,
 671                                         &entry->type);
 672                         put_unaligned_be16(len, &entry->len);
 673                         put_unaligned_be32(fc_host_num_discovered_ports(lport->host),
 674                                         &entry->value);
 675
 676                         /* Port ID */
 677                         entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 678                                         FC_FDMI_PORT_ATTR_DISCOVEREDPORTS_LEN);
 679                         len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 680                         len += FC_FDMI_PORT_ATTR_PORTID_LEN;
 681                         put_unaligned_be16(FC_FDMI_PORT_ATTR_PORTID,
 682                                         &entry->type);
 683                         put_unaligned_be16(len, &entry->len);
 684                         put_unaligned_be32(fc_host_port_id(lport->host),
 685                                         &entry->value);
 686                 }
 687
 688                 break;
 689         case FC_FDMI_DPRT:
 690                 len = sizeof(struct fc_fdmi_dprt);
 691                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 692                                     FC_FDMI_SUBTYPE);
 693                 /* Port Name */
 694                 put_unaligned_be64(lport->wwpn,
 695                                    &ct->payload.dprt.port.portname);
 696                 break;
 697         case FC_FDMI_DHBA:
 698                 len = sizeof(struct fc_fdmi_dhba);
 699                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 700                                     FC_FDMI_SUBTYPE);
 701                 /* HBA Identifier */
 702                 put_unaligned_be64(lport->wwpn, &ct->payload.dhba.hbaid.id);
 703                 break;
 704         default:
 705                 return -EINVAL;
 706         }
 707         *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 708         *fh_type = FC_TYPE_CT;
 709         return 0;
 710 }
 711
 712 /**
 713  * fc_ct_fill() - Fill in a common transport service request frame
 714  * @lport: local port.
 715  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 716  * @fp: frame to contain payload.
 717  * @op: CT opcode.
 718  * @r_ctl: pointer to FC header R_CTL.
 719  * @fh_type: pointer to FC-4 type.
 720  */
 721 static inline int fc_ct_fill(struct fc_lport *lport,
 722                       u32 fc_id, struct fc_frame *fp,
 723                       unsigned int op, enum fc_rctl *r_ctl,
 724                       enum fc_fh_type *fh_type, u32 *did)
 725 {
 726         int rc = -EINVAL;
 727
 728         switch (fc_id) {
 729         case FC_FID_MGMT_SERV:
 730                 rc = fc_ct_ms_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 731                 *did = FC_FID_MGMT_SERV;
 732                 break;
 733         case FC_FID_DIR_SERV:
 734         default:
 735                 rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 736                 *did = FC_FID_DIR_SERV;
 737                 break;
 738         }
 739
 740         return rc;
 741 }
 742 /**
 743  * fc_plogi_fill - Fill in plogi request frame
 744  */
 745 static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
 746                                  unsigned int op)
 747 {
 748         struct fc_els_flogi *plogi;
 749         struct fc_els_csp *csp;
 750         struct fc_els_cssp *cp;
 751
 752         plogi = fc_frame_payload_get(fp, sizeof(*plogi));
 753         memset(plogi, 0, sizeof(*plogi));
 754         plogi->fl_cmd = (u8) op;
 755         put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
 756         put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
 757
 758         csp = &plogi->fl_csp;
 759         csp->sp_hi_ver = 0x20;
 760         csp->sp_lo_ver = 0x20;
 761         csp->sp_bb_cred = htons(10);    /* this gets set by gateway */
 762         csp->sp_bb_data = htons((u16) lport->mfs);
 763         cp = &plogi->fl_cssp[3 - 1];    /* class 3 parameters */
 764         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 765         csp->sp_features = htons(FC_SP_FT_CIRO);
 766         csp->sp_tot_seq = htons(255);   /* seq. we accept */
 767         csp->sp_rel_off = htons(0x1f);
 768         csp->sp_e_d_tov = htonl(lport->e_d_tov);
 769
 770         cp->cp_rdfs = htons((u16) lport->mfs);
 771         cp->cp_con_seq = htons(255);
 772         cp->cp_open_seq = 1;
 773 }
 774
 775 /**
 776  * fc_flogi_fill - Fill in a flogi request frame.
 777  */
 778 static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
 779 {
 780         struct fc_els_csp *sp;
 781         struct fc_els_cssp *cp;
 782         struct fc_els_flogi *flogi;
 783
 784         flogi = fc_frame_payload_get(fp, sizeof(*flogi));
 785         memset(flogi, 0, sizeof(*flogi));
 786         flogi->fl_cmd = (u8) ELS_FLOGI;
 787         put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
 788         put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
 789         sp = &flogi->fl_csp;
 790         sp->sp_hi_ver = 0x20;
 791         sp->sp_lo_ver = 0x20;
 792         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 793         sp->sp_bb_data = htons((u16) lport->mfs);
 794         cp = &flogi->fl_cssp[3 - 1];    /* class 3 parameters */
 795         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 796         if (lport->does_npiv)
 797                 sp->sp_features = htons(FC_SP_FT_NPIV);
 798 }
 799
 800 /**
 801  * fc_fdisc_fill - Fill in a fdisc request frame.
 802  */
 803 static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
 804 {
 805         struct fc_els_csp *sp;
 806         struct fc_els_cssp *cp;
 807         struct fc_els_flogi *fdisc;
 808
 809         fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
 810         memset(fdisc, 0, sizeof(*fdisc));
 811         fdisc->fl_cmd = (u8) ELS_FDISC;
 812         put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
 813         put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
 814         sp = &fdisc->fl_csp;
 815         sp->sp_hi_ver = 0x20;
 816         sp->sp_lo_ver = 0x20;
 817         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 818         sp->sp_bb_data = htons((u16) lport->mfs);
 819         cp = &fdisc->fl_cssp[3 - 1];    /* class 3 parameters */
 820         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 821 }
 822
 823 /**
 824  * fc_logo_fill - Fill in a logo request frame.
 825  */
 826 static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
 827 {
 828         struct fc_els_logo *logo;
 829
 830         logo = fc_frame_payload_get(fp, sizeof(*logo));
 831         memset(logo, 0, sizeof(*logo));
 832         logo->fl_cmd = ELS_LOGO;
 833         hton24(logo->fl_n_port_id, lport->port_id);
 834         logo->fl_n_port_wwn = htonll(lport->wwpn);
 835 }
 836
 837 /**
 838  * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
 839  */
 840 static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
 841 {
 842         struct fc_els_rtv *rtv;
 843
 844         rtv = fc_frame_payload_get(fp, sizeof(*rtv));
 845         memset(rtv, 0, sizeof(*rtv));
 846         rtv->rtv_cmd = ELS_RTV;
 847 }
 848
 849 /**
 850  * fc_rec_fill - Fill in rec request frame
 851  */
 852 static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
 853 {
 854         struct fc_els_rec *rec;
 855         struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
 856
 857         rec = fc_frame_payload_get(fp, sizeof(*rec));
 858         memset(rec, 0, sizeof(*rec));
 859         rec->rec_cmd = ELS_REC;
 860         hton24(rec->rec_s_id, lport->port_id);
 861         rec->rec_ox_id = htons(ep->oxid);
 862         rec->rec_rx_id = htons(ep->rxid);
 863 }
 864
 865 /**
 866  * fc_prli_fill - Fill in prli request frame
 867  */
 868 static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
 869 {
 870         struct {
 871                 struct fc_els_prli prli;
 872                 struct fc_els_spp spp;
 873         } *pp;
 874
 875         pp = fc_frame_payload_get(fp, sizeof(*pp));
 876         memset(pp, 0, sizeof(*pp));
 877         pp->prli.prli_cmd = ELS_PRLI;
 878         pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
 879         pp->prli.prli_len = htons(sizeof(*pp));
 880         pp->spp.spp_type = FC_TYPE_FCP;
 881         pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
 882         pp->spp.spp_params = htonl(lport->service_params);
 883 }
 884
 885 /**
 886  * fc_scr_fill - Fill in a scr request frame.
 887  */
 888 static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
 889 {
 890         struct fc_els_scr *scr;
 891
 892         scr = fc_frame_payload_get(fp, sizeof(*scr));
 893         memset(scr, 0, sizeof(*scr));
 894         scr->scr_cmd = ELS_SCR;
 895         scr->scr_reg_func = ELS_SCRF_FULL;
 896 }
 897
 898 /**
 899  * fc_els_fill - Fill in an ELS  request frame
 900  */
 901 static inline int fc_els_fill(struct fc_lport *lport,
 902                        u32 did,
 903                        struct fc_frame *fp, unsigned int op,
 904                        enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
 905 {
 906         switch (op) {
 907         case ELS_ADISC:
 908                 fc_adisc_fill(lport, fp);
 909                 break;
 910
 911         case ELS_PLOGI:
 912                 fc_plogi_fill(lport, fp, ELS_PLOGI);
 913                 break;
 914
 915         case ELS_FLOGI:
 916                 fc_flogi_fill(lport, fp);
 917                 break;
 918
 919         case ELS_FDISC:
 920                 fc_fdisc_fill(lport, fp);
 921                 break;
 922
 923         case ELS_LOGO:
 924                 fc_logo_fill(lport, fp);
 925                 break;
 926
 927         case ELS_RTV:
 928                 fc_rtv_fill(lport, fp);
 929                 break;
 930
 931         case ELS_REC:
 932                 fc_rec_fill(lport, fp);
 933                 break;
 934
 935         case ELS_PRLI:
 936                 fc_prli_fill(lport, fp);
 937                 break;
 938
 939         case ELS_SCR:
 940                 fc_scr_fill(lport, fp);
 941                 break;
 942
 943         default:
 944                 return -EINVAL;
 945         }
 946
 947         *r_ctl = FC_RCTL_ELS_REQ;
 948         *fh_type = FC_TYPE_ELS;
 949         return 0;
 950 }
 951 #endif /* _FC_ENCODE_H_ */