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 = strscpy(entry->value, in, len);
 170         if (copied > 0)
 171                 memset(entry->value, copied, len - copied);
 172 }
 173
 174 /**
 175  * fc_ct_ms_fill() - Fill in a mgmt service request frame
 176  * @lport: local port.
 177  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 178  * @fp: frame to contain payload.
 179  * @op: CT opcode.
 180  * @r_ctl: pointer to FC header R_CTL.
 181  * @fh_type: pointer to FC-4 type.
 182  */
 183 static inline int fc_ct_ms_fill(struct fc_lport *lport,
 184                       u32 fc_id, struct fc_frame *fp,
 185                       unsigned int op, enum fc_rctl *r_ctl,
 186                       enum fc_fh_type *fh_type)
 187 {
 188         struct fc_ct_req *ct;
 189         size_t len;
 190         struct fc_fdmi_attr_entry *entry;
 191         struct fs_fdmi_attrs *hba_attrs;
 192         int numattrs = 0;
 193
 194         switch (op) {
 195         case FC_FDMI_RHBA:
 196                 numattrs = 10;
 197                 len = sizeof(struct fc_fdmi_rhba);
 198                 len -= sizeof(struct fc_fdmi_attr_entry);
 199                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 200                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 201                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 202                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 203                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 204                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 205                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 206                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 207                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 208                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 209                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 210                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 211                                     FC_FDMI_SUBTYPE);
 212
 213                 /* HBA Identifier */
 214                 put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id);
 215                 /* Number of Ports - always 1 */
 216                 put_unaligned_be32(1, &ct->payload.rhba.port.numport);
 217                 /* Port Name */
 218                 put_unaligned_be64(lport->wwpn,
 219                                    &ct->payload.rhba.port.port[0].portname);
 220
 221                 /* HBA Attributes */
 222                 put_unaligned_be32(numattrs,
 223                                    &ct->payload.rhba.hba_attrs.numattrs);
 224                 hba_attrs = &ct->payload.rhba.hba_attrs;
 225                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 226                 /* NodeName*/
 227                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 228                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 229                 put_unaligned_be16(FC_FDMI_HBA_ATTR_NODENAME,
 230                                    &entry->type);
 231                 put_unaligned_be16(len, &entry->len);
 232                 put_unaligned_be64(lport->wwnn,
 233                                    (__be64 *)&entry->value[0]);
 234
 235                 /* Manufacturer */
 236                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 237                                         FC_FDMI_HBA_ATTR_NODENAME_LEN);
 238                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 239                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 240                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MANUFACTURER,
 241                                    &entry->type);
 242                 put_unaligned_be16(len, &entry->len);
 243                 fc_ct_ms_fill_attr(entry,
 244                         fc_host_manufacturer(lport->host),
 245                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 246
 247                 /* SerialNumber */
 248                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 249                                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 250                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 251                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 252                 put_unaligned_be16(FC_FDMI_HBA_ATTR_SERIALNUMBER,
 253                                    &entry->type);
 254                 put_unaligned_be16(len, &entry->len);
 255                 fc_ct_ms_fill_attr(entry,
 256                         fc_host_serial_number(lport->host),
 257                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 258
 259                 /* Model */
 260                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 261                                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 262                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 263                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 264                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODEL,
 265                                    &entry->type);
 266                 put_unaligned_be16(len, &entry->len);
 267                 fc_ct_ms_fill_attr(entry,
 268                         fc_host_model(lport->host),
 269                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 270
 271                 /* Model Description */
 272                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 273                                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 274                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 275                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 276                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODELDESCRIPTION,
 277                                    &entry->type);
 278                 put_unaligned_be16(len, &entry->len);
 279                 fc_ct_ms_fill_attr(entry,
 280                         fc_host_model_description(lport->host),
 281                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 282
 283                 /* Hardware Version */
 284                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 285                                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 286                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 287                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 288                 put_unaligned_be16(FC_FDMI_HBA_ATTR_HARDWAREVERSION,
 289                                    &entry->type);
 290                 put_unaligned_be16(len, &entry->len);
 291                 fc_ct_ms_fill_attr(entry,
 292                         fc_host_hardware_version(lport->host),
 293                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 294
 295                 /* Driver Version */
 296                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 297                                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 298                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 299                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 300                 put_unaligned_be16(FC_FDMI_HBA_ATTR_DRIVERVERSION,
 301                                    &entry->type);
 302                 put_unaligned_be16(len, &entry->len);
 303                 fc_ct_ms_fill_attr(entry,
 304                         fc_host_driver_version(lport->host),
 305                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 306
 307                 /* OptionROM Version */
 308                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 309                                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 310                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 311                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 312                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OPTIONROMVERSION,
 313                                    &entry->type);
 314                 put_unaligned_be16(len, &entry->len);
 315                 fc_ct_ms_fill_attr(entry,
 316                         fc_host_optionrom_version(lport->host),
 317                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 318
 319                 /* Firmware Version */
 320                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 321                                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 322                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 323                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 324                 put_unaligned_be16(FC_FDMI_HBA_ATTR_FIRMWAREVERSION,
 325                                    &entry->type);
 326                 put_unaligned_be16(len, &entry->len);
 327                 fc_ct_ms_fill_attr(entry,
 328                         fc_host_firmware_version(lport->host),
 329                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 330
 331                 /* OS Name and Version */
 332                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 333                                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 334                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 335                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 336                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OSNAMEVERSION,
 337                                    &entry->type);
 338                 put_unaligned_be16(len, &entry->len);
 339                 snprintf((char *)&entry->value,
 340                         FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN,
 341                         "%s v%s",
 342                         init_utsname()->sysname,
 343                         init_utsname()->release);
 344                 break;
 345         case FC_FDMI_RPA:
 346                 numattrs = 6;
 347                 len = sizeof(struct fc_fdmi_rpa);
 348                 len -= sizeof(struct fc_fdmi_attr_entry);
 349                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 350                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 351                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 352                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 353                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 354                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 355                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 356                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 357                                     FC_FDMI_SUBTYPE);
 358
 359                 /* Port Name */
 360                 put_unaligned_be64(lport->wwpn,
 361                                    &ct->payload.rpa.port.portname);
 362
 363                 /* Port Attributes */
 364                 put_unaligned_be32(numattrs,
 365                                    &ct->payload.rpa.hba_attrs.numattrs);
 366
 367                 hba_attrs = &ct->payload.rpa.hba_attrs;
 368                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 369
 370                 /* FC4 types */
 371                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 372                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 373                 put_unaligned_be16(FC_FDMI_PORT_ATTR_FC4TYPES,
 374                                    &entry->type);
 375                 put_unaligned_be16(len, &entry->len);
 376                 memcpy(&entry->value, fc_host_supported_fc4s(lport->host),
 377                        FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 378
 379                 /* Supported Speed */
 380                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 381                                         FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 382                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 383                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 384                 put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDSPEED,
 385                                    &entry->type);
 386                 put_unaligned_be16(len, &entry->len);
 387
 388                 put_unaligned_be32(fc_host_supported_speeds(lport->host),
 389                                    &entry->value);
 390
 391                 /* Current Port Speed */
 392                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 393                                         FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN);
 394                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 395                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 396                 put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTPORTSPEED,
 397                                    &entry->type);
 398                 put_unaligned_be16(len, &entry->len);
 399                 put_unaligned_be32(lport->link_speed,
 400                                    &entry->value);
 401
 402                 /* Max Frame Size */
 403                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 404                                         FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN);
 405                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 406                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 407                 put_unaligned_be16(FC_FDMI_PORT_ATTR_MAXFRAMESIZE,
 408                                    &entry->type);
 409                 put_unaligned_be16(len, &entry->len);
 410                 put_unaligned_be32(fc_host_maxframe_size(lport->host),
 411                                    &entry->value);
 412
 413                 /* OS Device Name */
 414                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 415                                         FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN);
 416                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 417                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 418                 put_unaligned_be16(FC_FDMI_PORT_ATTR_OSDEVICENAME,
 419                                    &entry->type);
 420                 put_unaligned_be16(len, &entry->len);
 421                 /* Use the sysfs device name */
 422                 fc_ct_ms_fill_attr(entry,
 423                         dev_name(&lport->host->shost_gendev),
 424                         strnlen(dev_name(&lport->host->shost_gendev),
 425                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 426
 427                 /* Host Name */
 428                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 429                                         FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN);
 430                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 431                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 432                 put_unaligned_be16(FC_FDMI_PORT_ATTR_HOSTNAME,
 433                                    &entry->type);
 434                 put_unaligned_be16(len, &entry->len);
 435                 if (strlen(fc_host_system_hostname(lport->host)))
 436                         fc_ct_ms_fill_attr(entry,
 437                                 fc_host_system_hostname(lport->host),
 438                                 strnlen(fc_host_system_hostname(lport->host),
 439                                         FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 440                 else
 441                         fc_ct_ms_fill_attr(entry,
 442                                 init_utsname()->nodename,
 443                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN);
 444                 break;
 445         case FC_FDMI_DPRT:
 446                 len = sizeof(struct fc_fdmi_dprt);
 447                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 448                                     FC_FDMI_SUBTYPE);
 449                 /* Port Name */
 450                 put_unaligned_be64(lport->wwpn,
 451                                    &ct->payload.dprt.port.portname);
 452                 break;
 453         case FC_FDMI_DHBA:
 454                 len = sizeof(struct fc_fdmi_dhba);
 455                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 456                                     FC_FDMI_SUBTYPE);
 457                 /* HBA Identifier */
 458                 put_unaligned_be64(lport->wwpn, &ct->payload.dhba.hbaid.id);
 459                 break;
 460         default:
 461                 return -EINVAL;
 462         }
 463         *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 464         *fh_type = FC_TYPE_CT;
 465         return 0;
 466 }
 467
 468 /**
 469  * fc_ct_fill() - Fill in a common transport service request frame
 470  * @lport: local port.
 471  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 472  * @fp: frame to contain payload.
 473  * @op: CT opcode.
 474  * @r_ctl: pointer to FC header R_CTL.
 475  * @fh_type: pointer to FC-4 type.
 476  */
 477 static inline int fc_ct_fill(struct fc_lport *lport,
 478                       u32 fc_id, struct fc_frame *fp,
 479                       unsigned int op, enum fc_rctl *r_ctl,
 480                       enum fc_fh_type *fh_type, u32 *did)
 481 {
 482         int rc = -EINVAL;
 483
 484         switch (fc_id) {
 485         case FC_FID_MGMT_SERV:
 486                 rc = fc_ct_ms_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 487                 *did = FC_FID_MGMT_SERV;
 488                 break;
 489         case FC_FID_DIR_SERV:
 490         default:
 491                 rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 492                 *did = FC_FID_DIR_SERV;
 493                 break;
 494         }
 495
 496         return rc;
 497 }
 498 /**
 499  * fc_plogi_fill - Fill in plogi request frame
 500  */
 501 static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
 502                                  unsigned int op)
 503 {
 504         struct fc_els_flogi *plogi;
 505         struct fc_els_csp *csp;
 506         struct fc_els_cssp *cp;
 507
 508         plogi = fc_frame_payload_get(fp, sizeof(*plogi));
 509         memset(plogi, 0, sizeof(*plogi));
 510         plogi->fl_cmd = (u8) op;
 511         put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
 512         put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
 513
 514         csp = &plogi->fl_csp;
 515         csp->sp_hi_ver = 0x20;
 516         csp->sp_lo_ver = 0x20;
 517         csp->sp_bb_cred = htons(10);    /* this gets set by gateway */
 518         csp->sp_bb_data = htons((u16) lport->mfs);
 519         cp = &plogi->fl_cssp[3 - 1];    /* class 3 parameters */
 520         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 521         csp->sp_features = htons(FC_SP_FT_CIRO);
 522         csp->sp_tot_seq = htons(255);   /* seq. we accept */
 523         csp->sp_rel_off = htons(0x1f);
 524         csp->sp_e_d_tov = htonl(lport->e_d_tov);
 525
 526         cp->cp_rdfs = htons((u16) lport->mfs);
 527         cp->cp_con_seq = htons(255);
 528         cp->cp_open_seq = 1;
 529 }
 530
 531 /**
 532  * fc_flogi_fill - Fill in a flogi request frame.
 533  */
 534 static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
 535 {
 536         struct fc_els_csp *sp;
 537         struct fc_els_cssp *cp;
 538         struct fc_els_flogi *flogi;
 539
 540         flogi = fc_frame_payload_get(fp, sizeof(*flogi));
 541         memset(flogi, 0, sizeof(*flogi));
 542         flogi->fl_cmd = (u8) ELS_FLOGI;
 543         put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
 544         put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
 545         sp = &flogi->fl_csp;
 546         sp->sp_hi_ver = 0x20;
 547         sp->sp_lo_ver = 0x20;
 548         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 549         sp->sp_bb_data = htons((u16) lport->mfs);
 550         cp = &flogi->fl_cssp[3 - 1];    /* class 3 parameters */
 551         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 552         if (lport->does_npiv)
 553                 sp->sp_features = htons(FC_SP_FT_NPIV);
 554 }
 555
 556 /**
 557  * fc_fdisc_fill - Fill in a fdisc request frame.
 558  */
 559 static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
 560 {
 561         struct fc_els_csp *sp;
 562         struct fc_els_cssp *cp;
 563         struct fc_els_flogi *fdisc;
 564
 565         fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
 566         memset(fdisc, 0, sizeof(*fdisc));
 567         fdisc->fl_cmd = (u8) ELS_FDISC;
 568         put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
 569         put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
 570         sp = &fdisc->fl_csp;
 571         sp->sp_hi_ver = 0x20;
 572         sp->sp_lo_ver = 0x20;
 573         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 574         sp->sp_bb_data = htons((u16) lport->mfs);
 575         cp = &fdisc->fl_cssp[3 - 1];    /* class 3 parameters */
 576         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 577 }
 578
 579 /**
 580  * fc_logo_fill - Fill in a logo request frame.
 581  */
 582 static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
 583 {
 584         struct fc_els_logo *logo;
 585
 586         logo = fc_frame_payload_get(fp, sizeof(*logo));
 587         memset(logo, 0, sizeof(*logo));
 588         logo->fl_cmd = ELS_LOGO;
 589         hton24(logo->fl_n_port_id, lport->port_id);
 590         logo->fl_n_port_wwn = htonll(lport->wwpn);
 591 }
 592
 593 /**
 594  * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
 595  */
 596 static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
 597 {
 598         struct fc_els_rtv *rtv;
 599
 600         rtv = fc_frame_payload_get(fp, sizeof(*rtv));
 601         memset(rtv, 0, sizeof(*rtv));
 602         rtv->rtv_cmd = ELS_RTV;
 603 }
 604
 605 /**
 606  * fc_rec_fill - Fill in rec request frame
 607  */
 608 static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
 609 {
 610         struct fc_els_rec *rec;
 611         struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
 612
 613         rec = fc_frame_payload_get(fp, sizeof(*rec));
 614         memset(rec, 0, sizeof(*rec));
 615         rec->rec_cmd = ELS_REC;
 616         hton24(rec->rec_s_id, lport->port_id);
 617         rec->rec_ox_id = htons(ep->oxid);
 618         rec->rec_rx_id = htons(ep->rxid);
 619 }
 620
 621 /**
 622  * fc_prli_fill - Fill in prli request frame
 623  */
 624 static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
 625 {
 626         struct {
 627                 struct fc_els_prli prli;
 628                 struct fc_els_spp spp;
 629         } *pp;
 630
 631         pp = fc_frame_payload_get(fp, sizeof(*pp));
 632         memset(pp, 0, sizeof(*pp));
 633         pp->prli.prli_cmd = ELS_PRLI;
 634         pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
 635         pp->prli.prli_len = htons(sizeof(*pp));
 636         pp->spp.spp_type = FC_TYPE_FCP;
 637         pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
 638         pp->spp.spp_params = htonl(lport->service_params);
 639 }
 640
 641 /**
 642  * fc_scr_fill - Fill in a scr request frame.
 643  */
 644 static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
 645 {
 646         struct fc_els_scr *scr;
 647
 648         scr = fc_frame_payload_get(fp, sizeof(*scr));
 649         memset(scr, 0, sizeof(*scr));
 650         scr->scr_cmd = ELS_SCR;
 651         scr->scr_reg_func = ELS_SCRF_FULL;
 652 }
 653
 654 /**
 655  * fc_els_fill - Fill in an ELS  request frame
 656  */
 657 static inline int fc_els_fill(struct fc_lport *lport,
 658                        u32 did,
 659                        struct fc_frame *fp, unsigned int op,
 660                        enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
 661 {
 662         switch (op) {
 663         case ELS_ADISC:
 664                 fc_adisc_fill(lport, fp);
 665                 break;
 666
 667         case ELS_PLOGI:
 668                 fc_plogi_fill(lport, fp, ELS_PLOGI);
 669                 break;
 670
 671         case ELS_FLOGI:
 672                 fc_flogi_fill(lport, fp);
 673                 break;
 674
 675         case ELS_FDISC:
 676                 fc_fdisc_fill(lport, fp);
 677                 break;
 678
 679         case ELS_LOGO:
 680                 fc_logo_fill(lport, fp);
 681                 break;
 682
 683         case ELS_RTV:
 684                 fc_rtv_fill(lport, fp);
 685                 break;
 686
 687         case ELS_REC:
 688                 fc_rec_fill(lport, fp);
 689                 break;
 690
 691         case ELS_PRLI:
 692                 fc_prli_fill(lport, fp);
 693                 break;
 694
 695         case ELS_SCR:
 696                 fc_scr_fill(lport, fp);
 697                 break;
 698
 699         default:
 700                 return -EINVAL;
 701         }
 702
 703         *r_ctl = FC_RCTL_ELS_REQ;
 704         *fh_type = FC_TYPE_ELS;
 705         return 0;
 706 }
 707 #endif /* _FC_ENCODE_H_ */