include/scsi/fc_encode.h

   1 /*
   2  * Copyright(c) 2008 Intel Corporation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  16  *
  17  * Maintained at www.Open-FCoE.org
  18  */
  19
  20 #ifndef _FC_ENCODE_H_
  21 #define _FC_ENCODE_H_
  22 #include <asm/unaligned.h>
  23 #include <linux/utsname.h>
  24
  25 /*
  26  * F_CTL values for simple requests and responses.
  27  */
  28 #define FC_FCTL_REQ     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  29 #define FC_FCTL_RESP    (FC_FC_EX_CTX | FC_FC_LAST_SEQ | \
  30                         FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  31
  32 struct fc_ns_rft {
  33         struct fc_ns_fid fid;   /* port ID object */
  34         struct fc_ns_fts fts;   /* FC4-types object */
  35 };
  36
  37 struct fc_ct_req {
  38         struct fc_ct_hdr hdr;
  39         union {
  40                 struct fc_ns_gid_ft gid;
  41                 struct fc_ns_rn_id  rn;
  42                 struct fc_ns_rft rft;
  43                 struct fc_ns_rff_id rff;
  44                 struct fc_ns_fid fid;
  45                 struct fc_ns_rsnn snn;
  46                 struct fc_ns_rspn spn;
  47                 struct fc_fdmi_rhba rhba;
  48                 struct fc_fdmi_rpa  rpa;
  49                 struct fc_fdmi_dprt dprt;
  50                 struct fc_fdmi_dhba dhba;
  51         } payload;
  52 };
  53
  54 static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
  55                                     enum fc_rctl r_ctl,
  56                                     u32 did, u32 sid, enum fc_fh_type type,
  57                                     u32 f_ctl, u32 parm_offset)
  58 {
  59         WARN_ON(r_ctl == 0);
  60         fh->fh_r_ctl = r_ctl;
  61         hton24(fh->fh_d_id, did);
  62         hton24(fh->fh_s_id, sid);
  63         fh->fh_type = type;
  64         hton24(fh->fh_f_ctl, f_ctl);
  65         fh->fh_cs_ctl = 0;
  66         fh->fh_df_ctl = 0;
  67         fh->fh_parm_offset = htonl(parm_offset);
  68 }
  69
  70 /**
  71  * fill FC header fields in specified fc_frame
  72  */
  73 static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
  74                                   u32 did, u32 sid, enum fc_fh_type type,
  75                                   u32 f_ctl, u32 parm_offset)
  76 {
  77         struct fc_frame_header *fh;
  78
  79         fh = fc_frame_header_get(fp);
  80         __fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, parm_offset);
  81 }
  82
  83 /**
  84  * fc_adisc_fill() - Fill in adisc request frame
  85  * @lport: local port.
  86  * @fp: fc frame where payload will be placed.
  87  */
  88 static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
  89 {
  90         struct fc_els_adisc *adisc;
  91
  92         adisc = fc_frame_payload_get(fp, sizeof(*adisc));
  93         memset(adisc, 0, sizeof(*adisc));
  94         adisc->adisc_cmd = ELS_ADISC;
  95         put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
  96         put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
  97         hton24(adisc->adisc_port_id, lport->port_id);
  98 }
  99
 100 /**
 101  * fc_ct_hdr_fill- fills ct header and reset ct payload
 102  * returns pointer to ct request.
 103  */
 104 static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
 105                                                unsigned int op, size_t req_size,
 106                                                enum fc_ct_fs_type fs_type,
 107                                                u8 subtype)
 108 {
 109         struct fc_ct_req *ct;
 110         size_t ct_plen;
 111
 112         ct_plen  = sizeof(struct fc_ct_hdr) + req_size;
 113         ct = fc_frame_payload_get(fp, ct_plen);
 114         memset(ct, 0, ct_plen);
 115         ct->hdr.ct_rev = FC_CT_REV;
 116         ct->hdr.ct_fs_type = fs_type;
 117         ct->hdr.ct_fs_subtype = subtype;
 118         ct->hdr.ct_cmd = htons((u16) op);
 119         return ct;
 120 }
 121
 122 /**
 123  * fc_ct_ns_fill() - Fill in a name service request frame
 124  * @lport: local port.
 125  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 126  * @fp: frame to contain payload.
 127  * @op: CT opcode.
 128  * @r_ctl: pointer to FC header R_CTL.
 129  * @fh_type: pointer to FC-4 type.
 130  */
 131 static inline int fc_ct_ns_fill(struct fc_lport *lport,
 132                       u32 fc_id, struct fc_frame *fp,
 133                       unsigned int op, enum fc_rctl *r_ctl,
 134                       enum fc_fh_type *fh_type)
 135 {
 136         struct fc_ct_req *ct;
 137         size_t len;
 138
 139         switch (op) {
 140         case FC_NS_GPN_FT:
 141                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft),
 142                                     FC_FST_DIR, FC_NS_SUBTYPE);
 143                 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 144                 break;
 145
 146         case FC_NS_GPN_ID:
 147                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid),
 148                                     FC_FST_DIR, FC_NS_SUBTYPE);
 149                 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 150                 hton24(ct->payload.fid.fp_fid, fc_id);
 151                 break;
 152
 153         case FC_NS_RFT_ID:
 154                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft),
 155                                     FC_FST_DIR, FC_NS_SUBTYPE);
 156                 hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
 157                 ct->payload.rft.fts = lport->fcts;
 158                 break;
 159
 160         case FC_NS_RFF_ID:
 161                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id),
 162                                     FC_FST_DIR, FC_NS_SUBTYPE);
 163                 hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
 164                 ct->payload.rff.fr_type = FC_TYPE_FCP;
 165                 if (lport->service_params & FCP_SPPF_INIT_FCN)
 166                         ct->payload.rff.fr_feat = FCP_FEAT_INIT;
 167                 if (lport->service_params & FCP_SPPF_TARG_FCN)
 168                         ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
 169                 break;
 170
 171         case FC_NS_RNN_ID:
 172                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id),
 173                                     FC_FST_DIR, FC_NS_SUBTYPE);
 174                 hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
 175                 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
 176                 break;
 177
 178         case FC_NS_RSPN_ID:
 179                 len = strnlen(fc_host_symbolic_name(lport->host), 255);
 180                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len,
 181                                     FC_FST_DIR, FC_NS_SUBTYPE);
 182                 hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
 183                 strncpy(ct->payload.spn.fr_name,
 184                         fc_host_symbolic_name(lport->host), len);
 185                 ct->payload.spn.fr_name_len = len;
 186                 break;
 187
 188         case FC_NS_RSNN_NN:
 189                 len = strnlen(fc_host_symbolic_name(lport->host), 255);
 190                 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len,
 191                                     FC_FST_DIR, FC_NS_SUBTYPE);
 192                 put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
 193                 strncpy(ct->payload.snn.fr_name,
 194                         fc_host_symbolic_name(lport->host), len);
 195                 ct->payload.snn.fr_name_len = len;
 196                 break;
 197
 198         default:
 199                 return -EINVAL;
 200         }
 201         *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 202         *fh_type = FC_TYPE_CT;
 203         return 0;
 204 }
 205
 206 /**
 207  * fc_ct_ms_fill() - Fill in a mgmt service request frame
 208  * @lport: local port.
 209  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 210  * @fp: frame to contain payload.
 211  * @op: CT opcode.
 212  * @r_ctl: pointer to FC header R_CTL.
 213  * @fh_type: pointer to FC-4 type.
 214  */
 215 static inline int fc_ct_ms_fill(struct fc_lport *lport,
 216                       u32 fc_id, struct fc_frame *fp,
 217                       unsigned int op, enum fc_rctl *r_ctl,
 218                       enum fc_fh_type *fh_type)
 219 {
 220         struct fc_ct_req *ct;
 221         size_t len;
 222         struct fc_fdmi_attr_entry *entry;
 223         struct fs_fdmi_attrs *hba_attrs;
 224         int numattrs = 0;
 225
 226         switch (op) {
 227         case FC_FDMI_RHBA:
 228                 numattrs = 10;
 229                 len = sizeof(struct fc_fdmi_rhba);
 230                 len -= sizeof(struct fc_fdmi_attr_entry);
 231                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 232                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 233                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 234                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 235                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 236                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 237                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 238                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 239                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 240                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 241                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 242                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 243                                     FC_FDMI_SUBTYPE);
 244
 245                 /* HBA Identifier */
 246                 put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id);
 247                 /* Number of Ports - always 1 */
 248                 put_unaligned_be32(1, &ct->payload.rhba.port.numport);
 249                 /* Port Name */
 250                 put_unaligned_be64(lport->wwpn,
 251                                    &ct->payload.rhba.port.port[0].portname);
 252
 253                 /* HBA Attributes */
 254                 put_unaligned_be32(numattrs,
 255                                    &ct->payload.rhba.hba_attrs.numattrs);
 256                 hba_attrs = &ct->payload.rhba.hba_attrs;
 257                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 258                 /* NodeName*/
 259                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 260                 len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 261                 put_unaligned_be16(FC_FDMI_HBA_ATTR_NODENAME,
 262                                    &entry->type);
 263                 put_unaligned_be16(len, &entry->len);
 264                 put_unaligned_be64(lport->wwnn,
 265                                    (__be64 *)&entry->value[0]);
 266
 267                 /* Manufacturer */
 268                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 269                                         FC_FDMI_HBA_ATTR_NODENAME_LEN);
 270                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 271                 len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 272                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MANUFACTURER,
 273                                    &entry->type);
 274                 put_unaligned_be16(len, &entry->len);
 275                 strncpy((char *)&entry->value,
 276                         fc_host_manufacturer(lport->host),
 277                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 278
 279                 /* SerialNumber */
 280                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 281                                         FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 282                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 283                 len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 284                 put_unaligned_be16(FC_FDMI_HBA_ATTR_SERIALNUMBER,
 285                                    &entry->type);
 286                 put_unaligned_be16(len, &entry->len);
 287                 strncpy((char *)&entry->value,
 288                         fc_host_serial_number(lport->host),
 289                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 290
 291                 /* Model */
 292                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 293                                         FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 294                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 295                 len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 296                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODEL,
 297                                    &entry->type);
 298                 put_unaligned_be16(len, &entry->len);
 299                 strncpy((char *)&entry->value,
 300                         fc_host_model(lport->host),
 301                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 302
 303                 /* Model Description */
 304                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 305                                         FC_FDMI_HBA_ATTR_MODEL_LEN);
 306                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 307                 len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 308                 put_unaligned_be16(FC_FDMI_HBA_ATTR_MODELDESCRIPTION,
 309                                    &entry->type);
 310                 put_unaligned_be16(len, &entry->len);
 311                 strncpy((char *)&entry->value,
 312                         fc_host_model_description(lport->host),
 313                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 314
 315                 /* Hardware Version */
 316                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 317                                         FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 318                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 319                 len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 320                 put_unaligned_be16(FC_FDMI_HBA_ATTR_HARDWAREVERSION,
 321                                    &entry->type);
 322                 put_unaligned_be16(len, &entry->len);
 323                 strncpy((char *)&entry->value,
 324                         fc_host_hardware_version(lport->host),
 325                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 326
 327                 /* Driver Version */
 328                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 329                                         FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 330                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 331                 len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 332                 put_unaligned_be16(FC_FDMI_HBA_ATTR_DRIVERVERSION,
 333                                    &entry->type);
 334                 put_unaligned_be16(len, &entry->len);
 335                 strncpy((char *)&entry->value,
 336                         fc_host_driver_version(lport->host),
 337                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 338
 339                 /* OptionROM Version */
 340                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 341                                         FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 342                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 343                 len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 344                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OPTIONROMVERSION,
 345                                    &entry->type);
 346                 put_unaligned_be16(len, &entry->len);
 347                 strncpy((char *)&entry->value,
 348                         fc_host_optionrom_version(lport->host),
 349                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 350
 351                 /* Firmware Version */
 352                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 353                                         FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 354                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 355                 len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 356                 put_unaligned_be16(FC_FDMI_HBA_ATTR_FIRMWAREVERSION,
 357                                    &entry->type);
 358                 put_unaligned_be16(len, &entry->len);
 359                 strncpy((char *)&entry->value,
 360                         fc_host_firmware_version(lport->host),
 361                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 362
 363                 /* OS Name and Version */
 364                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 365                                         FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 366                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 367                 len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 368                 put_unaligned_be16(FC_FDMI_HBA_ATTR_OSNAMEVERSION,
 369                                    &entry->type);
 370                 put_unaligned_be16(len, &entry->len);
 371                 snprintf((char *)&entry->value,
 372                         FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN,
 373                         "%s v%s",
 374                         init_utsname()->sysname,
 375                         init_utsname()->release);
 376                 break;
 377         case FC_FDMI_RPA:
 378                 numattrs = 6;
 379                 len = sizeof(struct fc_fdmi_rpa);
 380                 len -= sizeof(struct fc_fdmi_attr_entry);
 381                 len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 382                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 383                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 384                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 385                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 386                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 387                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 388                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 389                                     FC_FDMI_SUBTYPE);
 390
 391                 /* Port Name */
 392                 put_unaligned_be64(lport->wwpn,
 393                                    &ct->payload.rpa.port.portname);
 394
 395                 /* Port Attributes */
 396                 put_unaligned_be32(numattrs,
 397                                    &ct->payload.rpa.hba_attrs.numattrs);
 398
 399                 hba_attrs = &ct->payload.rpa.hba_attrs;
 400                 entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 401
 402                 /* FC4 types */
 403                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 404                 len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 405                 put_unaligned_be16(FC_FDMI_PORT_ATTR_FC4TYPES,
 406                                    &entry->type);
 407                 put_unaligned_be16(len, &entry->len);
 408                 memcpy(&entry->value, fc_host_supported_fc4s(lport->host),
 409                        FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 410
 411                 /* Supported Speed */
 412                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 413                                         FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 414                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 415                 len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 416                 put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDSPEED,
 417                                    &entry->type);
 418                 put_unaligned_be16(len, &entry->len);
 419
 420                 put_unaligned_be32(fc_host_supported_speeds(lport->host),
 421                                    &entry->value);
 422
 423                 /* Current Port Speed */
 424                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 425                                         FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN);
 426                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 427                 len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 428                 put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTPORTSPEED,
 429                                    &entry->type);
 430                 put_unaligned_be16(len, &entry->len);
 431                 put_unaligned_be32(lport->link_speed,
 432                                    &entry->value);
 433
 434                 /* Max Frame Size */
 435                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 436                                         FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN);
 437                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 438                 len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 439                 put_unaligned_be16(FC_FDMI_PORT_ATTR_MAXFRAMESIZE,
 440                                    &entry->type);
 441                 put_unaligned_be16(len, &entry->len);
 442                 put_unaligned_be32(fc_host_maxframe_size(lport->host),
 443                                    &entry->value);
 444
 445                 /* OS Device Name */
 446                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 447                                         FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN);
 448                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 449                 len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 450                 put_unaligned_be16(FC_FDMI_PORT_ATTR_OSDEVICENAME,
 451                                    &entry->type);
 452                 put_unaligned_be16(len, &entry->len);
 453                 /* Use the sysfs device name */
 454                 strncpy((char *)&entry->value,
 455                         dev_name(&lport->host->shost_gendev),
 456                         strnlen(dev_name(&lport->host->shost_gendev),
 457                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 458
 459                 /* Host Name */
 460                 entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 461                                         FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN);
 462                 len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 463                 len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 464                 put_unaligned_be16(FC_FDMI_PORT_ATTR_HOSTNAME,
 465                                    &entry->type);
 466                 put_unaligned_be16(len, &entry->len);
 467                 if (strlen(fc_host_system_hostname(lport->host)))
 468                         strncpy((char *)&entry->value,
 469                                 fc_host_system_hostname(lport->host),
 470                                 strnlen(fc_host_system_hostname(lport->host),
 471                                         FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 472                 else
 473                         strncpy((char *)&entry->value,
 474                                 init_utsname()->nodename,
 475                                 FC_FDMI_PORT_ATTR_HOSTNAME_LEN);
 476                 break;
 477         case FC_FDMI_DPRT:
 478                 len = sizeof(struct fc_fdmi_dprt);
 479                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 480                                     FC_FDMI_SUBTYPE);
 481                 /* Port Name */
 482                 put_unaligned_be64(lport->wwpn,
 483                                    &ct->payload.dprt.port.portname);
 484                 break;
 485         case FC_FDMI_DHBA:
 486                 len = sizeof(struct fc_fdmi_dhba);
 487                 ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 488                                     FC_FDMI_SUBTYPE);
 489                 /* HBA Identifier */
 490                 put_unaligned_be64(lport->wwpn, &ct->payload.dhba.hbaid.id);
 491                 break;
 492         default:
 493                 return -EINVAL;
 494         }
 495         *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 496         *fh_type = FC_TYPE_CT;
 497         return 0;
 498 }
 499
 500 /**
 501  * fc_ct_fill() - Fill in a common transport service request frame
 502  * @lport: local port.
 503  * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 504  * @fp: frame to contain payload.
 505  * @op: CT opcode.
 506  * @r_ctl: pointer to FC header R_CTL.
 507  * @fh_type: pointer to FC-4 type.
 508  */
 509 static inline int fc_ct_fill(struct fc_lport *lport,
 510                       u32 fc_id, struct fc_frame *fp,
 511                       unsigned int op, enum fc_rctl *r_ctl,
 512                       enum fc_fh_type *fh_type, u32 *did)
 513 {
 514         int rc = -EINVAL;
 515
 516         switch (fc_id) {
 517         case FC_FID_MGMT_SERV:
 518                 rc = fc_ct_ms_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 519                 *did = FC_FID_MGMT_SERV;
 520                 break;
 521         case FC_FID_DIR_SERV:
 522         default:
 523                 rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 524                 *did = FC_FID_DIR_SERV;
 525                 break;
 526         }
 527
 528         return rc;
 529 }
 530 /**
 531  * fc_plogi_fill - Fill in plogi request frame
 532  */
 533 static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
 534                                  unsigned int op)
 535 {
 536         struct fc_els_flogi *plogi;
 537         struct fc_els_csp *csp;
 538         struct fc_els_cssp *cp;
 539
 540         plogi = fc_frame_payload_get(fp, sizeof(*plogi));
 541         memset(plogi, 0, sizeof(*plogi));
 542         plogi->fl_cmd = (u8) op;
 543         put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
 544         put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
 545
 546         csp = &plogi->fl_csp;
 547         csp->sp_hi_ver = 0x20;
 548         csp->sp_lo_ver = 0x20;
 549         csp->sp_bb_cred = htons(10);    /* this gets set by gateway */
 550         csp->sp_bb_data = htons((u16) lport->mfs);
 551         cp = &plogi->fl_cssp[3 - 1];    /* class 3 parameters */
 552         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 553         csp->sp_features = htons(FC_SP_FT_CIRO);
 554         csp->sp_tot_seq = htons(255);   /* seq. we accept */
 555         csp->sp_rel_off = htons(0x1f);
 556         csp->sp_e_d_tov = htonl(lport->e_d_tov);
 557
 558         cp->cp_rdfs = htons((u16) lport->mfs);
 559         cp->cp_con_seq = htons(255);
 560         cp->cp_open_seq = 1;
 561 }
 562
 563 /**
 564  * fc_flogi_fill - Fill in a flogi request frame.
 565  */
 566 static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
 567 {
 568         struct fc_els_csp *sp;
 569         struct fc_els_cssp *cp;
 570         struct fc_els_flogi *flogi;
 571
 572         flogi = fc_frame_payload_get(fp, sizeof(*flogi));
 573         memset(flogi, 0, sizeof(*flogi));
 574         flogi->fl_cmd = (u8) ELS_FLOGI;
 575         put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
 576         put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
 577         sp = &flogi->fl_csp;
 578         sp->sp_hi_ver = 0x20;
 579         sp->sp_lo_ver = 0x20;
 580         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 581         sp->sp_bb_data = htons((u16) lport->mfs);
 582         cp = &flogi->fl_cssp[3 - 1];    /* class 3 parameters */
 583         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 584         if (lport->does_npiv)
 585                 sp->sp_features = htons(FC_SP_FT_NPIV);
 586 }
 587
 588 /**
 589  * fc_fdisc_fill - Fill in a fdisc request frame.
 590  */
 591 static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
 592 {
 593         struct fc_els_csp *sp;
 594         struct fc_els_cssp *cp;
 595         struct fc_els_flogi *fdisc;
 596
 597         fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
 598         memset(fdisc, 0, sizeof(*fdisc));
 599         fdisc->fl_cmd = (u8) ELS_FDISC;
 600         put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
 601         put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
 602         sp = &fdisc->fl_csp;
 603         sp->sp_hi_ver = 0x20;
 604         sp->sp_lo_ver = 0x20;
 605         sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 606         sp->sp_bb_data = htons((u16) lport->mfs);
 607         cp = &fdisc->fl_cssp[3 - 1];    /* class 3 parameters */
 608         cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 609 }
 610
 611 /**
 612  * fc_logo_fill - Fill in a logo request frame.
 613  */
 614 static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
 615 {
 616         struct fc_els_logo *logo;
 617
 618         logo = fc_frame_payload_get(fp, sizeof(*logo));
 619         memset(logo, 0, sizeof(*logo));
 620         logo->fl_cmd = ELS_LOGO;
 621         hton24(logo->fl_n_port_id, lport->port_id);
 622         logo->fl_n_port_wwn = htonll(lport->wwpn);
 623 }
 624
 625 /**
 626  * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
 627  */
 628 static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
 629 {
 630         struct fc_els_rtv *rtv;
 631
 632         rtv = fc_frame_payload_get(fp, sizeof(*rtv));
 633         memset(rtv, 0, sizeof(*rtv));
 634         rtv->rtv_cmd = ELS_RTV;
 635 }
 636
 637 /**
 638  * fc_rec_fill - Fill in rec request frame
 639  */
 640 static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
 641 {
 642         struct fc_els_rec *rec;
 643         struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
 644
 645         rec = fc_frame_payload_get(fp, sizeof(*rec));
 646         memset(rec, 0, sizeof(*rec));
 647         rec->rec_cmd = ELS_REC;
 648         hton24(rec->rec_s_id, lport->port_id);
 649         rec->rec_ox_id = htons(ep->oxid);
 650         rec->rec_rx_id = htons(ep->rxid);
 651 }
 652
 653 /**
 654  * fc_prli_fill - Fill in prli request frame
 655  */
 656 static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
 657 {
 658         struct {
 659                 struct fc_els_prli prli;
 660                 struct fc_els_spp spp;
 661         } *pp;
 662
 663         pp = fc_frame_payload_get(fp, sizeof(*pp));
 664         memset(pp, 0, sizeof(*pp));
 665         pp->prli.prli_cmd = ELS_PRLI;
 666         pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
 667         pp->prli.prli_len = htons(sizeof(*pp));
 668         pp->spp.spp_type = FC_TYPE_FCP;
 669         pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
 670         pp->spp.spp_params = htonl(lport->service_params);
 671 }
 672
 673 /**
 674  * fc_scr_fill - Fill in a scr request frame.
 675  */
 676 static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
 677 {
 678         struct fc_els_scr *scr;
 679
 680         scr = fc_frame_payload_get(fp, sizeof(*scr));
 681         memset(scr, 0, sizeof(*scr));
 682         scr->scr_cmd = ELS_SCR;
 683         scr->scr_reg_func = ELS_SCRF_FULL;
 684 }
 685
 686 /**
 687  * fc_els_fill - Fill in an ELS  request frame
 688  */
 689 static inline int fc_els_fill(struct fc_lport *lport,
 690                        u32 did,
 691                        struct fc_frame *fp, unsigned int op,
 692                        enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
 693 {
 694         switch (op) {
 695         case ELS_ADISC:
 696                 fc_adisc_fill(lport, fp);
 697                 break;
 698
 699         case ELS_PLOGI:
 700                 fc_plogi_fill(lport, fp, ELS_PLOGI);
 701                 break;
 702
 703         case ELS_FLOGI:
 704                 fc_flogi_fill(lport, fp);
 705                 break;
 706
 707         case ELS_FDISC:
 708                 fc_fdisc_fill(lport, fp);
 709                 break;
 710
 711         case ELS_LOGO:
 712                 fc_logo_fill(lport, fp);
 713                 break;
 714
 715         case ELS_RTV:
 716                 fc_rtv_fill(lport, fp);
 717                 break;
 718
 719         case ELS_REC:
 720                 fc_rec_fill(lport, fp);
 721                 break;
 722
 723         case ELS_PRLI:
 724                 fc_prli_fill(lport, fp);
 725                 break;
 726
 727         case ELS_SCR:
 728                 fc_scr_fill(lport, fp);
 729                 break;
 730
 731         default:
 732                 return -EINVAL;
 733         }
 734
 735         *r_ctl = FC_RCTL_ELS_REQ;
 736         *fh_type = FC_TYPE_ELS;
 737         return 0;
 738 }
 739 #endif /* _FC_ENCODE_H_ */