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