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14#include <scsi/libiscsi.h>
15#include <scsi/scsi_transport_iscsi.h>
16#include <scsi/scsi_transport.h>
17#include <scsi/scsi_cmnd.h>
18#include <scsi/scsi_device.h>
19#include <scsi/scsi_host.h>
20#include <scsi/scsi_netlink.h>
21#include <net/netlink.h>
22#include <scsi/scsi.h>
23
24#include "be_iscsi.h"
25
26extern struct iscsi_transport beiscsi_iscsi_transport;
27
28
29
30
31
32
33
34
35struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
36 u16 cmds_max,
37 u16 qdepth,
38 u32 initial_cmdsn)
39{
40 struct Scsi_Host *shost;
41 struct beiscsi_endpoint *beiscsi_ep;
42 struct iscsi_cls_session *cls_session;
43 struct beiscsi_hba *phba;
44 struct iscsi_session *sess;
45 struct beiscsi_session *beiscsi_sess;
46 struct beiscsi_io_task *io_task;
47
48
49 if (!ep) {
50 pr_err("beiscsi_session_create: invalid ep\n");
51 return NULL;
52 }
53 beiscsi_ep = ep->dd_data;
54 phba = beiscsi_ep->phba;
55
56 if (!beiscsi_hba_is_online(phba)) {
57 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
58 "BS_%d : HBA in error 0x%lx\n", phba->state);
59 return NULL;
60 }
61
62 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
63 "BS_%d : In beiscsi_session_create\n");
64 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
65 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
66 "BS_%d : Cannot handle %d cmds."
67 "Max cmds per session supported is %d. Using %d."
68 "\n", cmds_max,
69 beiscsi_ep->phba->params.wrbs_per_cxn,
70 beiscsi_ep->phba->params.wrbs_per_cxn);
71
72 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
73 }
74
75 shost = phba->shost;
76 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
77 shost, cmds_max,
78 sizeof(*beiscsi_sess),
79 sizeof(*io_task),
80 initial_cmdsn, ISCSI_MAX_TARGET);
81 if (!cls_session)
82 return NULL;
83 sess = cls_session->dd_data;
84 beiscsi_sess = sess->dd_data;
85 beiscsi_sess->bhs_pool = dma_pool_create("beiscsi_bhs_pool",
86 &phba->pcidev->dev,
87 sizeof(struct be_cmd_bhs),
88 64, 0);
89 if (!beiscsi_sess->bhs_pool)
90 goto destroy_sess;
91
92 return cls_session;
93destroy_sess:
94 iscsi_session_teardown(cls_session);
95 return NULL;
96}
97
98
99
100
101
102
103
104
105void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
106{
107 struct iscsi_session *sess = cls_session->dd_data;
108 struct beiscsi_session *beiscsi_sess = sess->dd_data;
109
110 printk(KERN_INFO "In beiscsi_session_destroy\n");
111 dma_pool_destroy(beiscsi_sess->bhs_pool);
112 iscsi_session_teardown(cls_session);
113}
114
115
116
117
118
119void beiscsi_session_fail(struct iscsi_cls_session *cls_session)
120{
121 iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
122}
123
124
125
126
127
128
129
130struct iscsi_cls_conn *
131beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
132{
133 struct beiscsi_hba *phba;
134 struct Scsi_Host *shost;
135 struct iscsi_cls_conn *cls_conn;
136 struct beiscsi_conn *beiscsi_conn;
137 struct iscsi_conn *conn;
138 struct iscsi_session *sess;
139 struct beiscsi_session *beiscsi_sess;
140
141 shost = iscsi_session_to_shost(cls_session);
142 phba = iscsi_host_priv(shost);
143
144 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
145 "BS_%d : In beiscsi_conn_create ,cid"
146 "from iscsi layer=%d\n", cid);
147
148 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
149 if (!cls_conn)
150 return NULL;
151
152 conn = cls_conn->dd_data;
153 beiscsi_conn = conn->dd_data;
154 beiscsi_conn->ep = NULL;
155 beiscsi_conn->phba = phba;
156 beiscsi_conn->conn = conn;
157 sess = cls_session->dd_data;
158 beiscsi_sess = sess->dd_data;
159 beiscsi_conn->beiscsi_sess = beiscsi_sess;
160 return cls_conn;
161}
162
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168
169
170
171
172int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
173 struct iscsi_cls_conn *cls_conn,
174 u64 transport_fd, int is_leading)
175{
176 struct iscsi_conn *conn = cls_conn->dd_data;
177 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
178 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
179 struct beiscsi_hba *phba = iscsi_host_priv(shost);
180 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
181 struct hwi_wrb_context *pwrb_context;
182 struct beiscsi_endpoint *beiscsi_ep;
183 struct iscsi_endpoint *ep;
184 uint16_t cri_index;
185 int rc = 0;
186
187 ep = iscsi_lookup_endpoint(transport_fd);
188 if (!ep)
189 return -EINVAL;
190
191 beiscsi_ep = ep->dd_data;
192
193 if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) {
194 rc = -EINVAL;
195 goto put_ep;
196 }
197
198 if (beiscsi_ep->phba != phba) {
199 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
200 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
201 beiscsi_ep->phba, phba);
202 rc = -EEXIST;
203 goto put_ep;
204 }
205 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
206 if (phba->conn_table[cri_index]) {
207 if (beiscsi_conn != phba->conn_table[cri_index] ||
208 beiscsi_ep != phba->conn_table[cri_index]->ep) {
209 __beiscsi_log(phba, KERN_ERR,
210 "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n",
211 cri_index,
212 beiscsi_ep->ep_cid,
213 beiscsi_conn,
214 phba->conn_table[cri_index]);
215 rc = -EINVAL;
216 goto put_ep;
217 }
218 }
219
220 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
221 beiscsi_conn->ep = beiscsi_ep;
222 beiscsi_ep->conn = beiscsi_conn;
223
224
225
226
227 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
228 beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
229 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
230 "BS_%d : cid %d phba->conn_table[%u]=%p\n",
231 beiscsi_ep->ep_cid, cri_index, beiscsi_conn);
232 phba->conn_table[cri_index] = beiscsi_conn;
233
234put_ep:
235 iscsi_put_endpoint(ep);
236 return rc;
237}
238
239static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba)
240{
241 if (phba->ipv4_iface)
242 return 0;
243
244 phba->ipv4_iface = iscsi_create_iface(phba->shost,
245 &beiscsi_iscsi_transport,
246 ISCSI_IFACE_TYPE_IPV4,
247 0, 0);
248 if (!phba->ipv4_iface) {
249 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
250 "BS_%d : Could not "
251 "create default IPv4 address.\n");
252 return -ENODEV;
253 }
254
255 return 0;
256}
257
258static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba)
259{
260 if (phba->ipv6_iface)
261 return 0;
262
263 phba->ipv6_iface = iscsi_create_iface(phba->shost,
264 &beiscsi_iscsi_transport,
265 ISCSI_IFACE_TYPE_IPV6,
266 0, 0);
267 if (!phba->ipv6_iface) {
268 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
269 "BS_%d : Could not "
270 "create default IPv6 address.\n");
271 return -ENODEV;
272 }
273
274 return 0;
275}
276
277void beiscsi_iface_create_default(struct beiscsi_hba *phba)
278{
279 struct be_cmd_get_if_info_resp *if_info;
280
281 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) {
282 beiscsi_iface_create_ipv4(phba);
283 kfree(if_info);
284 }
285
286 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) {
287 beiscsi_iface_create_ipv6(phba);
288 kfree(if_info);
289 }
290}
291
292void beiscsi_iface_destroy_default(struct beiscsi_hba *phba)
293{
294 if (phba->ipv6_iface) {
295 iscsi_destroy_iface(phba->ipv6_iface);
296 phba->ipv6_iface = NULL;
297 }
298 if (phba->ipv4_iface) {
299 iscsi_destroy_iface(phba->ipv4_iface);
300 phba->ipv4_iface = NULL;
301 }
302}
303
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308
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310
311
312
313
314
315
316static int
317beiscsi_iface_config_vlan(struct Scsi_Host *shost,
318 struct iscsi_iface_param_info *iface_param)
319{
320 struct beiscsi_hba *phba = iscsi_host_priv(shost);
321 int ret = -EPERM;
322
323 switch (iface_param->param) {
324 case ISCSI_NET_PARAM_VLAN_ENABLED:
325 ret = 0;
326 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
327 ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE);
328 break;
329 case ISCSI_NET_PARAM_VLAN_TAG:
330 ret = beiscsi_if_set_vlan(phba,
331 *((uint16_t *)iface_param->value));
332 break;
333 }
334 return ret;
335}
336
337
338static int
339beiscsi_iface_config_ipv4(struct Scsi_Host *shost,
340 struct iscsi_iface_param_info *info,
341 void *data, uint32_t dt_len)
342{
343 struct beiscsi_hba *phba = iscsi_host_priv(shost);
344 u8 *ip = NULL, *subnet = NULL, *gw;
345 struct nlattr *nla;
346 int ret = -EPERM;
347
348
349 switch (info->param) {
350 case ISCSI_NET_PARAM_IFACE_ENABLE:
351 if (info->value[0] == ISCSI_IFACE_ENABLE)
352 ret = beiscsi_iface_create_ipv4(phba);
353 else {
354 iscsi_destroy_iface(phba->ipv4_iface);
355 phba->ipv4_iface = NULL;
356 }
357 break;
358 case ISCSI_NET_PARAM_IPV4_GW:
359 gw = info->value;
360 ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw);
361 break;
362 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
363 if (info->value[0] == ISCSI_BOOTPROTO_DHCP)
364 ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4);
365 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC)
366
367 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
368 NULL, NULL);
369 else
370 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
371 "BS_%d : Invalid BOOTPROTO: %d\n",
372 info->value[0]);
373 break;
374 case ISCSI_NET_PARAM_IPV4_ADDR:
375 ip = info->value;
376 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
377 if (nla) {
378 info = nla_data(nla);
379 subnet = info->value;
380 }
381 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
382 ip, subnet);
383 break;
384 case ISCSI_NET_PARAM_IPV4_SUBNET:
385
386
387
388
389 subnet = info->value;
390 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
391 if (nla) {
392 info = nla_data(nla);
393 ip = info->value;
394 }
395 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
396 ip, subnet);
397 break;
398 }
399
400 return ret;
401}
402
403static int
404beiscsi_iface_config_ipv6(struct Scsi_Host *shost,
405 struct iscsi_iface_param_info *iface_param,
406 void *data, uint32_t dt_len)
407{
408 struct beiscsi_hba *phba = iscsi_host_priv(shost);
409 int ret = -EPERM;
410
411 switch (iface_param->param) {
412 case ISCSI_NET_PARAM_IFACE_ENABLE:
413 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
414 ret = beiscsi_iface_create_ipv6(phba);
415 else {
416 iscsi_destroy_iface(phba->ipv6_iface);
417 phba->ipv6_iface = NULL;
418 }
419 break;
420 case ISCSI_NET_PARAM_IPV6_ADDR:
421 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6,
422 iface_param->value, NULL);
423 break;
424 }
425
426 return ret;
427}
428
429int beiscsi_iface_set_param(struct Scsi_Host *shost,
430 void *data, uint32_t dt_len)
431{
432 struct iscsi_iface_param_info *iface_param = NULL;
433 struct beiscsi_hba *phba = iscsi_host_priv(shost);
434 struct nlattr *attrib;
435 uint32_t rm_len = dt_len;
436 int ret;
437
438 if (!beiscsi_hba_is_online(phba)) {
439 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
440 "BS_%d : HBA in error 0x%lx\n", phba->state);
441 return -EBUSY;
442 }
443
444
445 ret = beiscsi_if_get_handle(phba);
446 if (ret) {
447 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
448 "BS_%d : Getting Interface Handle Failed\n");
449 return ret;
450 }
451
452 nla_for_each_attr(attrib, data, dt_len, rm_len) {
453 iface_param = nla_data(attrib);
454
455 if (iface_param->param_type != ISCSI_NET_PARAM)
456 continue;
457
458
459
460
461 if (iface_param->iface_num) {
462 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
463 "BS_%d : Invalid iface_num %d."
464 "Only iface_num 0 is supported.\n",
465 iface_param->iface_num);
466
467 return -EINVAL;
468 }
469
470 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
471 "BS_%d : %s.0 set param %d",
472 (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ?
473 "ipv4" : "ipv6", iface_param->param);
474
475 ret = -EPERM;
476 switch (iface_param->param) {
477 case ISCSI_NET_PARAM_VLAN_ENABLED:
478 case ISCSI_NET_PARAM_VLAN_TAG:
479 ret = beiscsi_iface_config_vlan(shost, iface_param);
480 break;
481 default:
482 switch (iface_param->iface_type) {
483 case ISCSI_IFACE_TYPE_IPV4:
484 ret = beiscsi_iface_config_ipv4(shost,
485 iface_param,
486 data, dt_len);
487 break;
488 case ISCSI_IFACE_TYPE_IPV6:
489 ret = beiscsi_iface_config_ipv6(shost,
490 iface_param,
491 data, dt_len);
492 break;
493 }
494 }
495
496 if (ret == -EPERM) {
497 __beiscsi_log(phba, KERN_ERR,
498 "BS_%d : %s.0 set param %d not permitted",
499 (iface_param->iface_type ==
500 ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6",
501 iface_param->param);
502 ret = 0;
503 }
504 if (ret)
505 break;
506 }
507
508 return ret;
509}
510
511static int __beiscsi_iface_get_param(struct beiscsi_hba *phba,
512 struct iscsi_iface *iface,
513 int param, char *buf)
514{
515 struct be_cmd_get_if_info_resp *if_info;
516 int len, ip_type = BEISCSI_IP_TYPE_V4;
517
518 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
519 ip_type = BEISCSI_IP_TYPE_V6;
520
521 len = beiscsi_if_get_info(phba, ip_type, &if_info);
522 if (len)
523 return len;
524
525 switch (param) {
526 case ISCSI_NET_PARAM_IPV4_ADDR:
527 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
528 break;
529 case ISCSI_NET_PARAM_IPV6_ADDR:
530 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
531 break;
532 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
533 if (!if_info->dhcp_state)
534 len = sprintf(buf, "static\n");
535 else
536 len = sprintf(buf, "dhcp\n");
537 break;
538 case ISCSI_NET_PARAM_IPV4_SUBNET:
539 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
540 break;
541 case ISCSI_NET_PARAM_VLAN_ENABLED:
542 len = sprintf(buf, "%s\n",
543 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ?
544 "disable" : "enable");
545 break;
546 case ISCSI_NET_PARAM_VLAN_ID:
547 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
548 len = -EINVAL;
549 else
550 len = sprintf(buf, "%d\n",
551 (if_info->vlan_priority &
552 ISCSI_MAX_VLAN_ID));
553 break;
554 case ISCSI_NET_PARAM_VLAN_PRIORITY:
555 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
556 len = -EINVAL;
557 else
558 len = sprintf(buf, "%d\n",
559 ((if_info->vlan_priority >> 13) &
560 ISCSI_MAX_VLAN_PRIORITY));
561 break;
562 default:
563 WARN_ON(1);
564 }
565
566 kfree(if_info);
567 return len;
568}
569
570int beiscsi_iface_get_param(struct iscsi_iface *iface,
571 enum iscsi_param_type param_type,
572 int param, char *buf)
573{
574 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
575 struct beiscsi_hba *phba = iscsi_host_priv(shost);
576 struct be_cmd_get_def_gateway_resp gateway;
577 int len = -EPERM;
578
579 if (param_type != ISCSI_NET_PARAM)
580 return 0;
581 if (!beiscsi_hba_is_online(phba)) {
582 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
583 "BS_%d : HBA in error 0x%lx\n", phba->state);
584 return -EBUSY;
585 }
586
587 switch (param) {
588 case ISCSI_NET_PARAM_IPV4_ADDR:
589 case ISCSI_NET_PARAM_IPV4_SUBNET:
590 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
591 case ISCSI_NET_PARAM_IPV6_ADDR:
592 case ISCSI_NET_PARAM_VLAN_ENABLED:
593 case ISCSI_NET_PARAM_VLAN_ID:
594 case ISCSI_NET_PARAM_VLAN_PRIORITY:
595 len = __beiscsi_iface_get_param(phba, iface, param, buf);
596 break;
597 case ISCSI_NET_PARAM_IFACE_ENABLE:
598 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
599 len = sprintf(buf, "%s\n",
600 phba->ipv4_iface ? "enable" : "disable");
601 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
602 len = sprintf(buf, "%s\n",
603 phba->ipv6_iface ? "enable" : "disable");
604 break;
605 case ISCSI_NET_PARAM_IPV4_GW:
606 memset(&gateway, 0, sizeof(gateway));
607 len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway);
608 if (!len)
609 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
610 break;
611 }
612
613 return len;
614}
615
616
617
618
619
620
621
622
623
624int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
625 enum iscsi_param param, char *buf)
626{
627 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
628 int len;
629
630 beiscsi_log(beiscsi_ep->phba, KERN_INFO,
631 BEISCSI_LOG_CONFIG,
632 "BS_%d : In beiscsi_ep_get_param,"
633 " param= %d\n", param);
634
635 switch (param) {
636 case ISCSI_PARAM_CONN_PORT:
637 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
638 break;
639 case ISCSI_PARAM_CONN_ADDRESS:
640 if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4)
641 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
642 else
643 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
644 break;
645 default:
646 len = -EPERM;
647 }
648 return len;
649}
650
651int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
652 enum iscsi_param param, char *buf, int buflen)
653{
654 struct iscsi_conn *conn = cls_conn->dd_data;
655 struct iscsi_session *session = conn->session;
656 struct beiscsi_hba *phba = NULL;
657 int ret;
658
659 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
660 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
661 "BS_%d : In beiscsi_conn_set_param,"
662 " param= %d\n", param);
663
664 ret = iscsi_set_param(cls_conn, param, buf, buflen);
665 if (ret)
666 return ret;
667
668
669
670
671 switch (param) {
672 case ISCSI_PARAM_FIRST_BURST:
673 if (session->first_burst > 8192)
674 session->first_burst = 8192;
675 break;
676 case ISCSI_PARAM_MAX_RECV_DLENGTH:
677 if (conn->max_recv_dlength > 65536)
678 conn->max_recv_dlength = 65536;
679 break;
680 case ISCSI_PARAM_MAX_BURST:
681 if (session->max_burst > 262144)
682 session->max_burst = 262144;
683 break;
684 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
685 if (conn->max_xmit_dlength > 65536)
686 conn->max_xmit_dlength = 65536;
687 fallthrough;
688 default:
689 return 0;
690 }
691
692 return 0;
693}
694
695
696
697
698
699
700static void beiscsi_get_port_state(struct Scsi_Host *shost)
701{
702 struct beiscsi_hba *phba = iscsi_host_priv(shost);
703 struct iscsi_cls_host *ihost = shost->shost_data;
704
705 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ?
706 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
707}
708
709
710
711
712
713
714static void beiscsi_get_port_speed(struct Scsi_Host *shost)
715{
716 struct beiscsi_hba *phba = iscsi_host_priv(shost);
717 struct iscsi_cls_host *ihost = shost->shost_data;
718
719 switch (phba->port_speed) {
720 case BE2ISCSI_LINK_SPEED_10MBPS:
721 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
722 break;
723 case BE2ISCSI_LINK_SPEED_100MBPS:
724 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
725 break;
726 case BE2ISCSI_LINK_SPEED_1GBPS:
727 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
728 break;
729 case BE2ISCSI_LINK_SPEED_10GBPS:
730 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
731 break;
732 case BE2ISCSI_LINK_SPEED_25GBPS:
733 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
734 break;
735 case BE2ISCSI_LINK_SPEED_40GBPS:
736 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
737 break;
738 default:
739 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
740 }
741}
742
743
744
745
746
747
748
749
750int beiscsi_get_host_param(struct Scsi_Host *shost,
751 enum iscsi_host_param param, char *buf)
752{
753 struct beiscsi_hba *phba = iscsi_host_priv(shost);
754 int status = 0;
755
756 if (!beiscsi_hba_is_online(phba)) {
757 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
758 "BS_%d : HBA in error 0x%lx\n", phba->state);
759 return 0;
760 }
761 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
762 "BS_%d : In beiscsi_get_host_param, param = %d\n", param);
763
764 switch (param) {
765 case ISCSI_HOST_PARAM_HWADDRESS:
766 status = beiscsi_get_macaddr(buf, phba);
767 if (status < 0) {
768 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
769 "BS_%d : beiscsi_get_macaddr Failed\n");
770 return 0;
771 }
772 break;
773 case ISCSI_HOST_PARAM_INITIATOR_NAME:
774
775 status = beiscsi_get_initiator_name(phba, buf, true);
776 if (status < 0) {
777 status = beiscsi_get_initiator_name(phba, buf, false);
778 if (status < 0) {
779 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
780 "BS_%d : Retrieving Initiator Name Failed\n");
781 status = 0;
782 }
783 }
784 break;
785 case ISCSI_HOST_PARAM_PORT_STATE:
786 beiscsi_get_port_state(shost);
787 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
788 break;
789 case ISCSI_HOST_PARAM_PORT_SPEED:
790 beiscsi_get_port_speed(shost);
791 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
792 break;
793 default:
794 return iscsi_host_get_param(shost, param, buf);
795 }
796 return status;
797}
798
799int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
800{
801 struct be_cmd_get_nic_conf_resp resp;
802 int rc;
803
804 if (phba->mac_addr_set)
805 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
806
807 memset(&resp, 0, sizeof(resp));
808 rc = mgmt_get_nic_conf(phba, &resp);
809 if (rc)
810 return rc;
811
812 phba->mac_addr_set = true;
813 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
814 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
815}
816
817
818
819
820
821
822
823
824void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
825 struct iscsi_stats *stats)
826{
827 struct iscsi_conn *conn = cls_conn->dd_data;
828 struct beiscsi_hba *phba = NULL;
829
830 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
831 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
832 "BS_%d : In beiscsi_conn_get_stats\n");
833
834 stats->txdata_octets = conn->txdata_octets;
835 stats->rxdata_octets = conn->rxdata_octets;
836 stats->dataout_pdus = conn->dataout_pdus_cnt;
837 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
838 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
839 stats->datain_pdus = conn->datain_pdus_cnt;
840 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
841 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
842 stats->r2t_pdus = conn->r2t_pdus_cnt;
843 stats->digest_err = 0;
844 stats->timeout_err = 0;
845 stats->custom_length = 1;
846 strcpy(stats->custom[0].desc, "eh_abort_cnt");
847 stats->custom[0].value = conn->eh_abort_cnt;
848}
849
850
851
852
853
854
855static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
856 struct beiscsi_offload_params *params)
857{
858 struct iscsi_conn *conn = beiscsi_conn->conn;
859 struct iscsi_session *session = conn->session;
860
861 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
862 params, session->max_burst);
863 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
864 max_send_data_segment_length, params,
865 conn->max_xmit_dlength);
866 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
867 params, session->first_burst);
868 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
869 session->erl);
870 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
871 conn->datadgst_en);
872 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
873 conn->hdrdgst_en);
874 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
875 session->initial_r2t_en);
876 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
877 session->imm_data_en);
878 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
879 data_seq_inorder, params,
880 session->dataseq_inorder_en);
881 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
882 pdu_seq_inorder, params,
883 session->pdu_inorder_en);
884 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
885 session->max_r2t);
886 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
887 (conn->exp_statsn - 1));
888 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
889 max_recv_data_segment_length, params,
890 conn->max_recv_dlength);
891
892}
893
894
895
896
897
898int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
899{
900 struct iscsi_conn *conn = cls_conn->dd_data;
901 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
902 struct beiscsi_endpoint *beiscsi_ep;
903 struct beiscsi_offload_params params;
904 struct beiscsi_hba *phba;
905
906 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
907
908 if (!beiscsi_hba_is_online(phba)) {
909 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
910 "BS_%d : HBA in error 0x%lx\n", phba->state);
911 return -EBUSY;
912 }
913 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
914 "BS_%d : In beiscsi_conn_start\n");
915
916 memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
917 beiscsi_ep = beiscsi_conn->ep;
918 if (!beiscsi_ep)
919 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
920 BEISCSI_LOG_CONFIG,
921 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
922
923 beiscsi_conn->login_in_progress = 0;
924 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
925 beiscsi_offload_connection(beiscsi_conn, ¶ms);
926 iscsi_conn_start(cls_conn);
927 return 0;
928}
929
930
931
932
933
934static int beiscsi_get_cid(struct beiscsi_hba *phba)
935{
936 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
937 unsigned short cid, cid_from_ulp;
938 struct ulp_cid_info *cid_info;
939
940
941 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
942 BEISCSI_ULP0_AVLBL_CID(phba) : 0;
943 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
944 BEISCSI_ULP1_AVLBL_CID(phba) : 0;
945 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
946 BEISCSI_ULP0 : BEISCSI_ULP1;
947
948
949
950
951
952 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported))
953 return BE_INVALID_CID;
954
955 cid_info = phba->cid_array_info[cid_from_ulp];
956 cid = cid_info->cid_array[cid_info->cid_alloc];
957 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) {
958 __beiscsi_log(phba, KERN_ERR,
959 "BS_%d : failed to get cid: available %u:%u\n",
960 cid_info->avlbl_cids, cid_info->cid_free);
961 return BE_INVALID_CID;
962 }
963
964 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID;
965 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp))
966 cid_info->cid_alloc = 0;
967 cid_info->avlbl_cids--;
968 return cid;
969}
970
971
972
973
974
975
976static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
977{
978 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
979 struct hwi_wrb_context *pwrb_context;
980 struct hwi_controller *phwi_ctrlr;
981 struct ulp_cid_info *cid_info;
982 uint16_t cid_post_ulp;
983
984 phwi_ctrlr = phba->phwi_ctrlr;
985 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
986 cid_post_ulp = pwrb_context->ulp_num;
987
988 cid_info = phba->cid_array_info[cid_post_ulp];
989
990 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) {
991 __beiscsi_log(phba, KERN_ERR,
992 "BS_%d : failed to put cid %u: available %u:%u\n",
993 cid, cid_info->avlbl_cids, cid_info->cid_free);
994 return;
995 }
996 cid_info->cid_array[cid_info->cid_free++] = cid;
997 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
998 cid_info->cid_free = 0;
999 cid_info->avlbl_cids++;
1000}
1001
1002
1003
1004
1005
1006static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1007{
1008 struct beiscsi_hba *phba = beiscsi_ep->phba;
1009 struct beiscsi_conn *beiscsi_conn;
1010
1011 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1012 beiscsi_ep->phba = NULL;
1013
1014 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL;
1015
1016
1017
1018
1019
1020
1021 if (!beiscsi_ep->conn)
1022 return;
1023
1024 beiscsi_conn = beiscsi_ep->conn;
1025
1026
1027
1028
1029 beiscsi_ep->conn = NULL;
1030 if (beiscsi_conn->login_in_progress) {
1031 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1032 beiscsi_conn->task);
1033 beiscsi_conn->login_in_progress = 0;
1034 }
1035}
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1047 struct sockaddr *src_addr,
1048 struct sockaddr *dst_addr, int non_blocking)
1049{
1050 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1051 struct beiscsi_hba *phba = beiscsi_ep->phba;
1052 struct tcp_connect_and_offload_out *ptcpcnct_out;
1053 struct be_dma_mem nonemb_cmd;
1054 unsigned int tag, req_memsize;
1055 int ret = -ENOMEM;
1056
1057 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1058 "BS_%d : In beiscsi_open_conn\n");
1059
1060 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1061 if (beiscsi_ep->ep_cid == BE_INVALID_CID) {
1062 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1063 "BS_%d : No free cid available\n");
1064 return ret;
1065 }
1066
1067 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1068 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1069 beiscsi_ep->ep_cid);
1070
1071 phba->ep_array[BE_GET_CRI_FROM_CID
1072 (beiscsi_ep->ep_cid)] = ep;
1073
1074 beiscsi_ep->cid_vld = 0;
1075
1076 if (is_chip_be2_be3r(phba))
1077 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1078 else
1079 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1080
1081 nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev,
1082 req_memsize,
1083 &nonemb_cmd.dma, GFP_KERNEL);
1084 if (nonemb_cmd.va == NULL) {
1085
1086 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1087 "BS_%d : Failed to allocate memory for"
1088 " mgmt_open_connection\n");
1089
1090 beiscsi_free_ep(beiscsi_ep);
1091 return -ENOMEM;
1092 }
1093 nonemb_cmd.size = req_memsize;
1094 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1095 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1096 if (!tag) {
1097 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1098 "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1099 beiscsi_ep->ep_cid);
1100
1101 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
1102 nonemb_cmd.va, nonemb_cmd.dma);
1103 beiscsi_free_ep(beiscsi_ep);
1104 return -EAGAIN;
1105 }
1106
1107 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1108 if (ret) {
1109 beiscsi_log(phba, KERN_ERR,
1110 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1111 "BS_%d : mgmt_open_connection Failed");
1112
1113 if (ret != -EBUSY)
1114 dma_free_coherent(&phba->ctrl.pdev->dev,
1115 nonemb_cmd.size, nonemb_cmd.va,
1116 nonemb_cmd.dma);
1117
1118 beiscsi_free_ep(beiscsi_ep);
1119 return ret;
1120 }
1121
1122 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1123 beiscsi_ep = ep->dd_data;
1124 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1125 beiscsi_ep->cid_vld = 1;
1126 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1127 "BS_%d : mgmt_open_connection Success\n");
1128
1129 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size,
1130 nonemb_cmd.va, nonemb_cmd.dma);
1131 return 0;
1132}
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142struct iscsi_endpoint *
1143beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1144 int non_blocking)
1145{
1146 struct beiscsi_hba *phba;
1147 struct beiscsi_endpoint *beiscsi_ep;
1148 struct iscsi_endpoint *ep;
1149 int ret;
1150
1151 if (!shost) {
1152 ret = -ENXIO;
1153 pr_err("beiscsi_ep_connect shost is NULL\n");
1154 return ERR_PTR(ret);
1155 }
1156
1157 phba = iscsi_host_priv(shost);
1158 if (!beiscsi_hba_is_online(phba)) {
1159 ret = -EIO;
1160 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1161 "BS_%d : HBA in error 0x%lx\n", phba->state);
1162 return ERR_PTR(ret);
1163 }
1164 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) {
1165 ret = -EBUSY;
1166 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1167 "BS_%d : The Adapter Port state is Down!!!\n");
1168 return ERR_PTR(ret);
1169 }
1170
1171 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1172 if (!ep) {
1173 ret = -ENOMEM;
1174 return ERR_PTR(ret);
1175 }
1176
1177 beiscsi_ep = ep->dd_data;
1178 beiscsi_ep->phba = phba;
1179 beiscsi_ep->openiscsi_ep = ep;
1180 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1181 if (ret) {
1182 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1183 "BS_%d : Failed in beiscsi_open_conn\n");
1184 goto free_ep;
1185 }
1186
1187 return ep;
1188
1189free_ep:
1190 iscsi_destroy_endpoint(ep);
1191 return ERR_PTR(ret);
1192}
1193
1194
1195
1196
1197
1198
1199
1200
1201int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1202{
1203 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1204
1205 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1206 "BS_%d : In beiscsi_ep_poll\n");
1207
1208 if (beiscsi_ep->cid_vld == 1)
1209 return 1;
1210 else
1211 return 0;
1212}
1213
1214
1215
1216
1217
1218
1219
1220
1221static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1222{
1223 uint16_t i;
1224 struct be_eq_obj *pbe_eq;
1225 struct hwi_controller *phwi_ctrlr;
1226 struct hwi_context_memory *phwi_context;
1227
1228 phwi_ctrlr = phba->phwi_ctrlr;
1229 phwi_context = phwi_ctrlr->phwi_ctxt;
1230
1231 for (i = 0; i < phba->num_cpus; i++) {
1232 pbe_eq = &phwi_context->be_eq[i];
1233 irq_poll_disable(&pbe_eq->iopoll);
1234 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1235 irq_poll_enable(&pbe_eq->iopoll);
1236 }
1237}
1238
1239
1240
1241
1242
1243
1244
1245static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep)
1246{
1247 struct beiscsi_hba *phba = beiscsi_ep->phba;
1248 unsigned int tag, attempts;
1249 int ret;
1250
1251
1252
1253
1254
1255 attempts = 0;
1256 while (attempts++ < 3) {
1257 tag = beiscsi_invalidate_cxn(phba, beiscsi_ep);
1258 if (tag) {
1259 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1260 if (!ret)
1261 break;
1262 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1263 "BS_%d : invalidate conn failed cid %d\n",
1264 beiscsi_ep->ep_cid);
1265 }
1266 }
1267
1268
1269 msleep(250);
1270
1271 beiscsi_flush_cq(phba);
1272
1273 if (attempts > 3)
1274 return -1;
1275
1276 attempts = 0;
1277 while (attempts++ < 3) {
1278 tag = beiscsi_upload_cxn(phba, beiscsi_ep);
1279 if (tag) {
1280 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1281 if (!ret)
1282 break;
1283 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1284 "BS_%d : upload conn failed cid %d\n",
1285 beiscsi_ep->ep_cid);
1286 }
1287 }
1288 if (attempts > 3)
1289 return -1;
1290
1291 return 0;
1292}
1293
1294
1295
1296
1297
1298
1299
1300void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1301{
1302 struct beiscsi_endpoint *beiscsi_ep;
1303 struct beiscsi_hba *phba;
1304 uint16_t cri_index;
1305
1306 beiscsi_ep = ep->dd_data;
1307 phba = beiscsi_ep->phba;
1308 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1309 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n",
1310 beiscsi_ep->ep_cid);
1311
1312 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
1313 if (!phba->ep_array[cri_index]) {
1314 __beiscsi_log(phba, KERN_ERR,
1315 "BS_%d : ep_array at %u cid %u empty\n",
1316 cri_index,
1317 beiscsi_ep->ep_cid);
1318 return;
1319 }
1320
1321 if (!beiscsi_hba_is_online(phba)) {
1322 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1323 "BS_%d : HBA in error 0x%lx\n", phba->state);
1324 } else {
1325
1326
1327
1328
1329 if (beiscsi_conn_close(beiscsi_ep) < 0)
1330 __beiscsi_log(phba, KERN_ERR,
1331 "BS_%d : close conn failed cid %d\n",
1332 beiscsi_ep->ep_cid);
1333 }
1334
1335 beiscsi_free_ep(beiscsi_ep);
1336 if (!phba->conn_table[cri_index])
1337 __beiscsi_log(phba, KERN_ERR,
1338 "BS_%d : conn_table empty at %u: cid %u\n",
1339 cri_index, beiscsi_ep->ep_cid);
1340 phba->conn_table[cri_index] = NULL;
1341 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1342}
1343
1344umode_t beiscsi_attr_is_visible(int param_type, int param)
1345{
1346 switch (param_type) {
1347 case ISCSI_NET_PARAM:
1348 switch (param) {
1349 case ISCSI_NET_PARAM_IFACE_ENABLE:
1350 case ISCSI_NET_PARAM_IPV4_ADDR:
1351 case ISCSI_NET_PARAM_IPV4_SUBNET:
1352 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1353 case ISCSI_NET_PARAM_IPV4_GW:
1354 case ISCSI_NET_PARAM_IPV6_ADDR:
1355 case ISCSI_NET_PARAM_VLAN_ID:
1356 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1357 case ISCSI_NET_PARAM_VLAN_ENABLED:
1358 return S_IRUGO;
1359 default:
1360 return 0;
1361 }
1362 case ISCSI_HOST_PARAM:
1363 switch (param) {
1364 case ISCSI_HOST_PARAM_HWADDRESS:
1365 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1366 case ISCSI_HOST_PARAM_PORT_STATE:
1367 case ISCSI_HOST_PARAM_PORT_SPEED:
1368 return S_IRUGO;
1369 default:
1370 return 0;
1371 }
1372 case ISCSI_PARAM:
1373 switch (param) {
1374 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1375 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1376 case ISCSI_PARAM_HDRDGST_EN:
1377 case ISCSI_PARAM_DATADGST_EN:
1378 case ISCSI_PARAM_CONN_ADDRESS:
1379 case ISCSI_PARAM_CONN_PORT:
1380 case ISCSI_PARAM_EXP_STATSN:
1381 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1382 case ISCSI_PARAM_PERSISTENT_PORT:
1383 case ISCSI_PARAM_PING_TMO:
1384 case ISCSI_PARAM_RECV_TMO:
1385 case ISCSI_PARAM_INITIAL_R2T_EN:
1386 case ISCSI_PARAM_MAX_R2T:
1387 case ISCSI_PARAM_IMM_DATA_EN:
1388 case ISCSI_PARAM_FIRST_BURST:
1389 case ISCSI_PARAM_MAX_BURST:
1390 case ISCSI_PARAM_PDU_INORDER_EN:
1391 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1392 case ISCSI_PARAM_ERL:
1393 case ISCSI_PARAM_TARGET_NAME:
1394 case ISCSI_PARAM_TPGT:
1395 case ISCSI_PARAM_USERNAME:
1396 case ISCSI_PARAM_PASSWORD:
1397 case ISCSI_PARAM_USERNAME_IN:
1398 case ISCSI_PARAM_PASSWORD_IN:
1399 case ISCSI_PARAM_FAST_ABORT:
1400 case ISCSI_PARAM_ABORT_TMO:
1401 case ISCSI_PARAM_LU_RESET_TMO:
1402 case ISCSI_PARAM_IFACE_NAME:
1403 case ISCSI_PARAM_INITIATOR_NAME:
1404 return S_IRUGO;
1405 default:
1406 return 0;
1407 }
1408 }
1409
1410 return 0;
1411}
1412
