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15#include <scsi/libiscsi.h>
16#include <scsi/scsi_transport_iscsi.h>
17#include <scsi/scsi_transport.h>
18#include <scsi/scsi_cmnd.h>
19#include <scsi/scsi_device.h>
20#include <scsi/scsi_host.h>
21#include <scsi/scsi_netlink.h>
22#include <net/netlink.h>
23#include <scsi/scsi.h>
24
25#include "be_iscsi.h"
26
27extern struct iscsi_transport beiscsi_iscsi_transport;
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
163
164
165
166
167
168
169
170
171int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
172 struct iscsi_cls_conn *cls_conn,
173 u64 transport_fd, int is_leading)
174{
175 struct iscsi_conn *conn = cls_conn->dd_data;
176 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
177 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
178 struct beiscsi_hba *phba = iscsi_host_priv(shost);
179 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
180 struct hwi_wrb_context *pwrb_context;
181 struct beiscsi_endpoint *beiscsi_ep;
182 struct iscsi_endpoint *ep;
183 uint16_t cri_index;
184
185 ep = iscsi_lookup_endpoint(transport_fd);
186 if (!ep)
187 return -EINVAL;
188
189 beiscsi_ep = ep->dd_data;
190
191 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
192 return -EINVAL;
193
194 if (beiscsi_ep->phba != phba) {
195 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
196 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
197 beiscsi_ep->phba, phba);
198
199 return -EEXIST;
200 }
201 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
202 if (phba->conn_table[cri_index]) {
203 if (beiscsi_conn != phba->conn_table[cri_index] ||
204 beiscsi_ep != phba->conn_table[cri_index]->ep) {
205 __beiscsi_log(phba, KERN_ERR,
206 "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n",
207 cri_index,
208 beiscsi_ep->ep_cid,
209 beiscsi_conn,
210 phba->conn_table[cri_index]);
211 return -EINVAL;
212 }
213 }
214
215 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
216 beiscsi_conn->ep = beiscsi_ep;
217 beiscsi_ep->conn = beiscsi_conn;
218
219
220
221
222 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
223 beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
224 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
225 "BS_%d : cid %d phba->conn_table[%u]=%p\n",
226 beiscsi_ep->ep_cid, cri_index, beiscsi_conn);
227 phba->conn_table[cri_index] = beiscsi_conn;
228 return 0;
229}
230
231static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba)
232{
233 if (phba->ipv4_iface)
234 return 0;
235
236 phba->ipv4_iface = iscsi_create_iface(phba->shost,
237 &beiscsi_iscsi_transport,
238 ISCSI_IFACE_TYPE_IPV4,
239 0, 0);
240 if (!phba->ipv4_iface) {
241 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
242 "BS_%d : Could not "
243 "create default IPv4 address.\n");
244 return -ENODEV;
245 }
246
247 return 0;
248}
249
250static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba)
251{
252 if (phba->ipv6_iface)
253 return 0;
254
255 phba->ipv6_iface = iscsi_create_iface(phba->shost,
256 &beiscsi_iscsi_transport,
257 ISCSI_IFACE_TYPE_IPV6,
258 0, 0);
259 if (!phba->ipv6_iface) {
260 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
261 "BS_%d : Could not "
262 "create default IPv6 address.\n");
263 return -ENODEV;
264 }
265
266 return 0;
267}
268
269void beiscsi_iface_create_default(struct beiscsi_hba *phba)
270{
271 struct be_cmd_get_if_info_resp *if_info;
272
273 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) {
274 beiscsi_iface_create_ipv4(phba);
275 kfree(if_info);
276 }
277
278 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) {
279 beiscsi_iface_create_ipv6(phba);
280 kfree(if_info);
281 }
282}
283
284void beiscsi_iface_destroy_default(struct beiscsi_hba *phba)
285{
286 if (phba->ipv6_iface) {
287 iscsi_destroy_iface(phba->ipv6_iface);
288 phba->ipv6_iface = NULL;
289 }
290 if (phba->ipv4_iface) {
291 iscsi_destroy_iface(phba->ipv4_iface);
292 phba->ipv4_iface = NULL;
293 }
294}
295
296
297
298
299
300
301
302
303
304
305
306
307
308static int
309beiscsi_iface_config_vlan(struct Scsi_Host *shost,
310 struct iscsi_iface_param_info *iface_param)
311{
312 struct beiscsi_hba *phba = iscsi_host_priv(shost);
313 int ret = -EPERM;
314
315 switch (iface_param->param) {
316 case ISCSI_NET_PARAM_VLAN_ENABLED:
317 ret = 0;
318 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
319 ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE);
320 break;
321 case ISCSI_NET_PARAM_VLAN_TAG:
322 ret = beiscsi_if_set_vlan(phba,
323 *((uint16_t *)iface_param->value));
324 break;
325 }
326 return ret;
327}
328
329
330static int
331beiscsi_iface_config_ipv4(struct Scsi_Host *shost,
332 struct iscsi_iface_param_info *info,
333 void *data, uint32_t dt_len)
334{
335 struct beiscsi_hba *phba = iscsi_host_priv(shost);
336 u8 *ip = NULL, *subnet = NULL, *gw;
337 struct nlattr *nla;
338 int ret = -EPERM;
339
340
341 switch (info->param) {
342 case ISCSI_NET_PARAM_IFACE_ENABLE:
343 if (info->value[0] == ISCSI_IFACE_ENABLE)
344 ret = beiscsi_iface_create_ipv4(phba);
345 else {
346 iscsi_destroy_iface(phba->ipv4_iface);
347 phba->ipv4_iface = NULL;
348 }
349 break;
350 case ISCSI_NET_PARAM_IPV4_GW:
351 gw = info->value;
352 ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw);
353 break;
354 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
355 if (info->value[0] == ISCSI_BOOTPROTO_DHCP)
356 ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4);
357 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC)
358
359 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
360 NULL, NULL);
361 else
362 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
363 "BS_%d : Invalid BOOTPROTO: %d\n",
364 info->value[0]);
365 break;
366 case ISCSI_NET_PARAM_IPV4_ADDR:
367 ip = info->value;
368 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
369 if (nla) {
370 info = nla_data(nla);
371 subnet = info->value;
372 }
373 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
374 ip, subnet);
375 break;
376 case ISCSI_NET_PARAM_IPV4_SUBNET:
377
378
379
380
381 subnet = info->value;
382 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
383 if (nla) {
384 info = nla_data(nla);
385 ip = info->value;
386 }
387 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
388 ip, subnet);
389 break;
390 }
391
392 return ret;
393}
394
395static int
396beiscsi_iface_config_ipv6(struct Scsi_Host *shost,
397 struct iscsi_iface_param_info *iface_param,
398 void *data, uint32_t dt_len)
399{
400 struct beiscsi_hba *phba = iscsi_host_priv(shost);
401 int ret = -EPERM;
402
403 switch (iface_param->param) {
404 case ISCSI_NET_PARAM_IFACE_ENABLE:
405 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
406 ret = beiscsi_iface_create_ipv6(phba);
407 else {
408 iscsi_destroy_iface(phba->ipv6_iface);
409 phba->ipv6_iface = NULL;
410 }
411 break;
412 case ISCSI_NET_PARAM_IPV6_ADDR:
413 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6,
414 iface_param->value, NULL);
415 break;
416 }
417
418 return ret;
419}
420
421int beiscsi_iface_set_param(struct Scsi_Host *shost,
422 void *data, uint32_t dt_len)
423{
424 struct iscsi_iface_param_info *iface_param = NULL;
425 struct beiscsi_hba *phba = iscsi_host_priv(shost);
426 struct nlattr *attrib;
427 uint32_t rm_len = dt_len;
428 int ret;
429
430 if (!beiscsi_hba_is_online(phba)) {
431 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
432 "BS_%d : HBA in error 0x%lx\n", phba->state);
433 return -EBUSY;
434 }
435
436
437 ret = beiscsi_if_get_handle(phba);
438 if (ret) {
439 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
440 "BS_%d : Getting Interface Handle Failed\n");
441 return ret;
442 }
443
444 nla_for_each_attr(attrib, data, dt_len, rm_len) {
445 iface_param = nla_data(attrib);
446
447 if (iface_param->param_type != ISCSI_NET_PARAM)
448 continue;
449
450
451
452
453 if (iface_param->iface_num) {
454 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
455 "BS_%d : Invalid iface_num %d."
456 "Only iface_num 0 is supported.\n",
457 iface_param->iface_num);
458
459 return -EINVAL;
460 }
461
462 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
463 "BS_%d : %s.0 set param %d",
464 (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ?
465 "ipv4" : "ipv6", iface_param->param);
466
467 ret = -EPERM;
468 switch (iface_param->param) {
469 case ISCSI_NET_PARAM_VLAN_ENABLED:
470 case ISCSI_NET_PARAM_VLAN_TAG:
471 ret = beiscsi_iface_config_vlan(shost, iface_param);
472 break;
473 default:
474 switch (iface_param->iface_type) {
475 case ISCSI_IFACE_TYPE_IPV4:
476 ret = beiscsi_iface_config_ipv4(shost,
477 iface_param,
478 data, dt_len);
479 break;
480 case ISCSI_IFACE_TYPE_IPV6:
481 ret = beiscsi_iface_config_ipv6(shost,
482 iface_param,
483 data, dt_len);
484 break;
485 }
486 }
487
488 if (ret == -EPERM) {
489 __beiscsi_log(phba, KERN_ERR,
490 "BS_%d : %s.0 set param %d not permitted",
491 (iface_param->iface_type ==
492 ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6",
493 iface_param->param);
494 ret = 0;
495 }
496 if (ret)
497 break;
498 }
499
500 return ret;
501}
502
503static int __beiscsi_iface_get_param(struct beiscsi_hba *phba,
504 struct iscsi_iface *iface,
505 int param, char *buf)
506{
507 struct be_cmd_get_if_info_resp *if_info;
508 int len, ip_type = BEISCSI_IP_TYPE_V4;
509
510 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
511 ip_type = BEISCSI_IP_TYPE_V6;
512
513 len = beiscsi_if_get_info(phba, ip_type, &if_info);
514 if (len)
515 return len;
516
517 switch (param) {
518 case ISCSI_NET_PARAM_IPV4_ADDR:
519 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
520 break;
521 case ISCSI_NET_PARAM_IPV6_ADDR:
522 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
523 break;
524 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
525 if (!if_info->dhcp_state)
526 len = sprintf(buf, "static\n");
527 else
528 len = sprintf(buf, "dhcp\n");
529 break;
530 case ISCSI_NET_PARAM_IPV4_SUBNET:
531 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
532 break;
533 case ISCSI_NET_PARAM_VLAN_ENABLED:
534 len = sprintf(buf, "%s\n",
535 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ?
536 "disable" : "enable");
537 break;
538 case ISCSI_NET_PARAM_VLAN_ID:
539 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
540 len = -EINVAL;
541 else
542 len = sprintf(buf, "%d\n",
543 (if_info->vlan_priority &
544 ISCSI_MAX_VLAN_ID));
545 break;
546 case ISCSI_NET_PARAM_VLAN_PRIORITY:
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 >> 13) &
552 ISCSI_MAX_VLAN_PRIORITY));
553 break;
554 default:
555 WARN_ON(1);
556 }
557
558 kfree(if_info);
559 return len;
560}
561
562int beiscsi_iface_get_param(struct iscsi_iface *iface,
563 enum iscsi_param_type param_type,
564 int param, char *buf)
565{
566 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
567 struct beiscsi_hba *phba = iscsi_host_priv(shost);
568 struct be_cmd_get_def_gateway_resp gateway;
569 int len = -EPERM;
570
571 if (param_type != ISCSI_NET_PARAM)
572 return 0;
573 if (!beiscsi_hba_is_online(phba)) {
574 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
575 "BS_%d : HBA in error 0x%lx\n", phba->state);
576 return -EBUSY;
577 }
578
579 switch (param) {
580 case ISCSI_NET_PARAM_IPV4_ADDR:
581 case ISCSI_NET_PARAM_IPV4_SUBNET:
582 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
583 case ISCSI_NET_PARAM_IPV6_ADDR:
584 case ISCSI_NET_PARAM_VLAN_ENABLED:
585 case ISCSI_NET_PARAM_VLAN_ID:
586 case ISCSI_NET_PARAM_VLAN_PRIORITY:
587 len = __beiscsi_iface_get_param(phba, iface, param, buf);
588 break;
589 case ISCSI_NET_PARAM_IFACE_ENABLE:
590 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
591 len = sprintf(buf, "%s\n",
592 phba->ipv4_iface ? "enable" : "disable");
593 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
594 len = sprintf(buf, "%s\n",
595 phba->ipv6_iface ? "enable" : "disable");
596 break;
597 case ISCSI_NET_PARAM_IPV4_GW:
598 memset(&gateway, 0, sizeof(gateway));
599 len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway);
600 if (!len)
601 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
602 break;
603 }
604
605 return len;
606}
607
608
609
610
611
612
613
614
615
616int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
617 enum iscsi_param param, char *buf)
618{
619 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
620 int len;
621
622 beiscsi_log(beiscsi_ep->phba, KERN_INFO,
623 BEISCSI_LOG_CONFIG,
624 "BS_%d : In beiscsi_ep_get_param,"
625 " param= %d\n", param);
626
627 switch (param) {
628 case ISCSI_PARAM_CONN_PORT:
629 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
630 break;
631 case ISCSI_PARAM_CONN_ADDRESS:
632 if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4)
633 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
634 else
635 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
636 break;
637 default:
638 len = -EPERM;
639 }
640 return len;
641}
642
643int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
644 enum iscsi_param param, char *buf, int buflen)
645{
646 struct iscsi_conn *conn = cls_conn->dd_data;
647 struct iscsi_session *session = conn->session;
648 struct beiscsi_hba *phba = NULL;
649 int ret;
650
651 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
652 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
653 "BS_%d : In beiscsi_conn_set_param,"
654 " param= %d\n", param);
655
656 ret = iscsi_set_param(cls_conn, param, buf, buflen);
657 if (ret)
658 return ret;
659
660
661
662
663 switch (param) {
664 case ISCSI_PARAM_FIRST_BURST:
665 if (session->first_burst > 8192)
666 session->first_burst = 8192;
667 break;
668 case ISCSI_PARAM_MAX_RECV_DLENGTH:
669 if (conn->max_recv_dlength > 65536)
670 conn->max_recv_dlength = 65536;
671 break;
672 case ISCSI_PARAM_MAX_BURST:
673 if (session->max_burst > 262144)
674 session->max_burst = 262144;
675 break;
676 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
677 if (conn->max_xmit_dlength > 65536)
678 conn->max_xmit_dlength = 65536;
679 default:
680 return 0;
681 }
682
683 return 0;
684}
685
686
687
688
689
690
691static void beiscsi_get_port_state(struct Scsi_Host *shost)
692{
693 struct beiscsi_hba *phba = iscsi_host_priv(shost);
694 struct iscsi_cls_host *ihost = shost->shost_data;
695
696 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ?
697 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
698}
699
700
701
702
703
704
705static void beiscsi_get_port_speed(struct Scsi_Host *shost)
706{
707 struct beiscsi_hba *phba = iscsi_host_priv(shost);
708 struct iscsi_cls_host *ihost = shost->shost_data;
709
710 switch (phba->port_speed) {
711 case BE2ISCSI_LINK_SPEED_10MBPS:
712 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
713 break;
714 case BE2ISCSI_LINK_SPEED_100MBPS:
715 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
716 break;
717 case BE2ISCSI_LINK_SPEED_1GBPS:
718 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
719 break;
720 case BE2ISCSI_LINK_SPEED_10GBPS:
721 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
722 break;
723 case BE2ISCSI_LINK_SPEED_25GBPS:
724 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
725 break;
726 case BE2ISCSI_LINK_SPEED_40GBPS:
727 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
728 break;
729 default:
730 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
731 }
732}
733
734
735
736
737
738
739
740
741int beiscsi_get_host_param(struct Scsi_Host *shost,
742 enum iscsi_host_param param, char *buf)
743{
744 struct beiscsi_hba *phba = iscsi_host_priv(shost);
745 int status = 0;
746
747 if (!beiscsi_hba_is_online(phba)) {
748 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
749 "BS_%d : HBA in error 0x%lx\n", phba->state);
750 return 0;
751 }
752 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
753 "BS_%d : In beiscsi_get_host_param, param = %d\n", param);
754
755 switch (param) {
756 case ISCSI_HOST_PARAM_HWADDRESS:
757 status = beiscsi_get_macaddr(buf, phba);
758 if (status < 0) {
759 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
760 "BS_%d : beiscsi_get_macaddr Failed\n");
761 return 0;
762 }
763 break;
764 case ISCSI_HOST_PARAM_INITIATOR_NAME:
765
766 status = beiscsi_get_initiator_name(phba, buf, true);
767 if (status < 0) {
768 status = beiscsi_get_initiator_name(phba, buf, false);
769 if (status < 0) {
770 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
771 "BS_%d : Retreiving Initiator Name Failed\n");
772 status = 0;
773 }
774 }
775 break;
776 case ISCSI_HOST_PARAM_PORT_STATE:
777 beiscsi_get_port_state(shost);
778 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
779 break;
780 case ISCSI_HOST_PARAM_PORT_SPEED:
781 beiscsi_get_port_speed(shost);
782 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
783 break;
784 default:
785 return iscsi_host_get_param(shost, param, buf);
786 }
787 return status;
788}
789
790int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
791{
792 struct be_cmd_get_nic_conf_resp resp;
793 int rc;
794
795 if (phba->mac_addr_set)
796 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
797
798 memset(&resp, 0, sizeof(resp));
799 rc = mgmt_get_nic_conf(phba, &resp);
800 if (rc)
801 return rc;
802
803 phba->mac_addr_set = true;
804 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
805 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
806}
807
808
809
810
811
812
813
814
815void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
816 struct iscsi_stats *stats)
817{
818 struct iscsi_conn *conn = cls_conn->dd_data;
819 struct beiscsi_hba *phba = NULL;
820
821 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
822 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
823 "BS_%d : In beiscsi_conn_get_stats\n");
824
825 stats->txdata_octets = conn->txdata_octets;
826 stats->rxdata_octets = conn->rxdata_octets;
827 stats->dataout_pdus = conn->dataout_pdus_cnt;
828 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
829 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
830 stats->datain_pdus = conn->datain_pdus_cnt;
831 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
832 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
833 stats->r2t_pdus = conn->r2t_pdus_cnt;
834 stats->digest_err = 0;
835 stats->timeout_err = 0;
836 stats->custom_length = 1;
837 strcpy(stats->custom[0].desc, "eh_abort_cnt");
838 stats->custom[0].value = conn->eh_abort_cnt;
839}
840
841
842
843
844
845
846static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
847 struct beiscsi_offload_params *params)
848{
849 struct iscsi_conn *conn = beiscsi_conn->conn;
850 struct iscsi_session *session = conn->session;
851
852 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
853 params, session->max_burst);
854 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
855 max_send_data_segment_length, params,
856 conn->max_xmit_dlength);
857 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
858 params, session->first_burst);
859 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
860 session->erl);
861 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
862 conn->datadgst_en);
863 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
864 conn->hdrdgst_en);
865 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
866 session->initial_r2t_en);
867 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
868 session->imm_data_en);
869 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
870 data_seq_inorder, params,
871 session->dataseq_inorder_en);
872 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
873 pdu_seq_inorder, params,
874 session->pdu_inorder_en);
875 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
876 session->max_r2t);
877 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
878 (conn->exp_statsn - 1));
879 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
880 max_recv_data_segment_length, params,
881 conn->max_recv_dlength);
882
883}
884
885
886
887
888
889int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
890{
891 struct iscsi_conn *conn = cls_conn->dd_data;
892 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
893 struct beiscsi_endpoint *beiscsi_ep;
894 struct beiscsi_offload_params params;
895 struct beiscsi_hba *phba;
896
897 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
898
899 if (!beiscsi_hba_is_online(phba)) {
900 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
901 "BS_%d : HBA in error 0x%lx\n", phba->state);
902 return -EBUSY;
903 }
904 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
905 "BS_%d : In beiscsi_conn_start\n");
906
907 memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
908 beiscsi_ep = beiscsi_conn->ep;
909 if (!beiscsi_ep)
910 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
911 BEISCSI_LOG_CONFIG,
912 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
913
914 beiscsi_conn->login_in_progress = 0;
915 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
916 beiscsi_offload_connection(beiscsi_conn, ¶ms);
917 iscsi_conn_start(cls_conn);
918 return 0;
919}
920
921
922
923
924
925static int beiscsi_get_cid(struct beiscsi_hba *phba)
926{
927 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
928 unsigned short cid, cid_from_ulp;
929 struct ulp_cid_info *cid_info;
930
931
932 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
933 BEISCSI_ULP0_AVLBL_CID(phba) : 0;
934 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
935 BEISCSI_ULP1_AVLBL_CID(phba) : 0;
936 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
937 BEISCSI_ULP0 : BEISCSI_ULP1;
938
939
940
941
942
943 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported))
944 return BE_INVALID_CID;
945
946 cid_info = phba->cid_array_info[cid_from_ulp];
947 cid = cid_info->cid_array[cid_info->cid_alloc];
948 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) {
949 __beiscsi_log(phba, KERN_ERR,
950 "BS_%d : failed to get cid: available %u:%u\n",
951 cid_info->avlbl_cids, cid_info->cid_free);
952 return BE_INVALID_CID;
953 }
954
955 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID;
956 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp))
957 cid_info->cid_alloc = 0;
958 cid_info->avlbl_cids--;
959 return cid;
960}
961
962
963
964
965
966
967static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
968{
969 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
970 struct hwi_wrb_context *pwrb_context;
971 struct hwi_controller *phwi_ctrlr;
972 struct ulp_cid_info *cid_info;
973 uint16_t cid_post_ulp;
974
975 phwi_ctrlr = phba->phwi_ctrlr;
976 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
977 cid_post_ulp = pwrb_context->ulp_num;
978
979 cid_info = phba->cid_array_info[cid_post_ulp];
980
981 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) {
982 __beiscsi_log(phba, KERN_ERR,
983 "BS_%d : failed to put cid %u: available %u:%u\n",
984 cid, cid_info->avlbl_cids, cid_info->cid_free);
985 return;
986 }
987 cid_info->cid_array[cid_info->cid_free++] = cid;
988 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
989 cid_info->cid_free = 0;
990 cid_info->avlbl_cids++;
991}
992
993
994
995
996
997static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
998{
999 struct beiscsi_hba *phba = beiscsi_ep->phba;
1000 struct beiscsi_conn *beiscsi_conn;
1001
1002 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1003 beiscsi_ep->phba = NULL;
1004
1005 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL;
1006
1007
1008
1009
1010
1011
1012 if (!beiscsi_ep->conn)
1013 return;
1014
1015 beiscsi_conn = beiscsi_ep->conn;
1016
1017
1018
1019
1020 beiscsi_ep->conn = NULL;
1021 if (beiscsi_conn->login_in_progress) {
1022 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1023 beiscsi_conn->task);
1024 beiscsi_conn->login_in_progress = 0;
1025 }
1026}
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1037 struct sockaddr *src_addr,
1038 struct sockaddr *dst_addr, int non_blocking)
1039{
1040 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1041 struct beiscsi_hba *phba = beiscsi_ep->phba;
1042 struct tcp_connect_and_offload_out *ptcpcnct_out;
1043 struct be_dma_mem nonemb_cmd;
1044 unsigned int tag, req_memsize;
1045 int ret = -ENOMEM;
1046
1047 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1048 "BS_%d : In beiscsi_open_conn\n");
1049
1050 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1051 if (beiscsi_ep->ep_cid == BE_INVALID_CID) {
1052 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1053 "BS_%d : No free cid available\n");
1054 return ret;
1055 }
1056
1057 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1058 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1059 beiscsi_ep->ep_cid);
1060
1061 phba->ep_array[BE_GET_CRI_FROM_CID
1062 (beiscsi_ep->ep_cid)] = ep;
1063
1064 beiscsi_ep->cid_vld = 0;
1065
1066 if (is_chip_be2_be3r(phba))
1067 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1068 else
1069 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1070
1071 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1072 req_memsize,
1073 &nonemb_cmd.dma);
1074 if (nonemb_cmd.va == NULL) {
1075
1076 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1077 "BS_%d : Failed to allocate memory for"
1078 " mgmt_open_connection\n");
1079
1080 beiscsi_free_ep(beiscsi_ep);
1081 return -ENOMEM;
1082 }
1083 nonemb_cmd.size = req_memsize;
1084 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1085 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1086 if (!tag) {
1087 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1088 "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1089 beiscsi_ep->ep_cid);
1090
1091 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1092 nonemb_cmd.va, nonemb_cmd.dma);
1093 beiscsi_free_ep(beiscsi_ep);
1094 return -EAGAIN;
1095 }
1096
1097 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1098 if (ret) {
1099 beiscsi_log(phba, KERN_ERR,
1100 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1101 "BS_%d : mgmt_open_connection Failed");
1102
1103 if (ret != -EBUSY)
1104 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1105 nonemb_cmd.va, nonemb_cmd.dma);
1106
1107 beiscsi_free_ep(beiscsi_ep);
1108 return ret;
1109 }
1110
1111 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1112 beiscsi_ep = ep->dd_data;
1113 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1114 beiscsi_ep->cid_vld = 1;
1115 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1116 "BS_%d : mgmt_open_connection Success\n");
1117
1118 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1119 nonemb_cmd.va, nonemb_cmd.dma);
1120 return 0;
1121}
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131struct iscsi_endpoint *
1132beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1133 int non_blocking)
1134{
1135 struct beiscsi_hba *phba;
1136 struct beiscsi_endpoint *beiscsi_ep;
1137 struct iscsi_endpoint *ep;
1138 int ret;
1139
1140 if (!shost) {
1141 ret = -ENXIO;
1142 pr_err("beiscsi_ep_connect shost is NULL\n");
1143 return ERR_PTR(ret);
1144 }
1145
1146 phba = iscsi_host_priv(shost);
1147 if (!beiscsi_hba_is_online(phba)) {
1148 ret = -EIO;
1149 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1150 "BS_%d : HBA in error 0x%lx\n", phba->state);
1151 return ERR_PTR(ret);
1152 }
1153 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) {
1154 ret = -EBUSY;
1155 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1156 "BS_%d : The Adapter Port state is Down!!!\n");
1157 return ERR_PTR(ret);
1158 }
1159
1160 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1161 if (!ep) {
1162 ret = -ENOMEM;
1163 return ERR_PTR(ret);
1164 }
1165
1166 beiscsi_ep = ep->dd_data;
1167 beiscsi_ep->phba = phba;
1168 beiscsi_ep->openiscsi_ep = ep;
1169 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1170 if (ret) {
1171 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1172 "BS_%d : Failed in beiscsi_open_conn\n");
1173 goto free_ep;
1174 }
1175
1176 return ep;
1177
1178free_ep:
1179 iscsi_destroy_endpoint(ep);
1180 return ERR_PTR(ret);
1181}
1182
1183
1184
1185
1186
1187
1188
1189
1190int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1191{
1192 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1193
1194 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1195 "BS_%d : In beiscsi_ep_poll\n");
1196
1197 if (beiscsi_ep->cid_vld == 1)
1198 return 1;
1199 else
1200 return 0;
1201}
1202
1203
1204
1205
1206
1207
1208
1209
1210static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1211{
1212 uint16_t i;
1213 struct be_eq_obj *pbe_eq;
1214 struct hwi_controller *phwi_ctrlr;
1215 struct hwi_context_memory *phwi_context;
1216
1217 phwi_ctrlr = phba->phwi_ctrlr;
1218 phwi_context = phwi_ctrlr->phwi_ctxt;
1219
1220 for (i = 0; i < phba->num_cpus; i++) {
1221 pbe_eq = &phwi_context->be_eq[i];
1222 irq_poll_disable(&pbe_eq->iopoll);
1223 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1224 irq_poll_enable(&pbe_eq->iopoll);
1225 }
1226}
1227
1228
1229
1230
1231
1232
1233
1234static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep)
1235{
1236 struct beiscsi_hba *phba = beiscsi_ep->phba;
1237 unsigned int tag, attempts;
1238 int ret;
1239
1240
1241
1242
1243
1244 attempts = 0;
1245 while (attempts++ < 3) {
1246 tag = beiscsi_invalidate_cxn(phba, beiscsi_ep);
1247 if (tag) {
1248 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1249 if (!ret)
1250 break;
1251 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1252 "BS_%d : invalidate conn failed cid %d\n",
1253 beiscsi_ep->ep_cid);
1254 }
1255 }
1256
1257
1258 msleep(250);
1259
1260 beiscsi_flush_cq(phba);
1261
1262 if (attempts > 3)
1263 return -1;
1264
1265 attempts = 0;
1266 while (attempts++ < 3) {
1267 tag = beiscsi_upload_cxn(phba, beiscsi_ep);
1268 if (tag) {
1269 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1270 if (!ret)
1271 break;
1272 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1273 "BS_%d : upload conn failed cid %d\n",
1274 beiscsi_ep->ep_cid);
1275 }
1276 }
1277 if (attempts > 3)
1278 return -1;
1279
1280 return 0;
1281}
1282
1283
1284
1285
1286
1287
1288
1289void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1290{
1291 struct beiscsi_endpoint *beiscsi_ep;
1292 struct beiscsi_conn *beiscsi_conn;
1293 struct beiscsi_hba *phba;
1294 uint16_t cri_index;
1295
1296 beiscsi_ep = ep->dd_data;
1297 phba = beiscsi_ep->phba;
1298 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1299 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n",
1300 beiscsi_ep->ep_cid);
1301
1302 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
1303 if (!phba->ep_array[cri_index]) {
1304 __beiscsi_log(phba, KERN_ERR,
1305 "BS_%d : ep_array at %u cid %u empty\n",
1306 cri_index,
1307 beiscsi_ep->ep_cid);
1308 return;
1309 }
1310
1311 if (beiscsi_ep->conn) {
1312 beiscsi_conn = beiscsi_ep->conn;
1313 iscsi_suspend_queue(beiscsi_conn->conn);
1314 }
1315
1316 if (!beiscsi_hba_is_online(phba)) {
1317 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1318 "BS_%d : HBA in error 0x%lx\n", phba->state);
1319 } else {
1320
1321
1322
1323
1324 if (beiscsi_conn_close(beiscsi_ep) < 0)
1325 __beiscsi_log(phba, KERN_ERR,
1326 "BS_%d : close conn failed cid %d\n",
1327 beiscsi_ep->ep_cid);
1328 }
1329
1330 beiscsi_free_ep(beiscsi_ep);
1331 if (!phba->conn_table[cri_index])
1332 __beiscsi_log(phba, KERN_ERR,
1333 "BS_%d : conn_table empty at %u: cid %u\n",
1334 cri_index, beiscsi_ep->ep_cid);
1335 phba->conn_table[cri_index] = NULL;
1336 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1337}
1338
1339umode_t beiscsi_attr_is_visible(int param_type, int param)
1340{
1341 switch (param_type) {
1342 case ISCSI_NET_PARAM:
1343 switch (param) {
1344 case ISCSI_NET_PARAM_IFACE_ENABLE:
1345 case ISCSI_NET_PARAM_IPV4_ADDR:
1346 case ISCSI_NET_PARAM_IPV4_SUBNET:
1347 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1348 case ISCSI_NET_PARAM_IPV4_GW:
1349 case ISCSI_NET_PARAM_IPV6_ADDR:
1350 case ISCSI_NET_PARAM_VLAN_ID:
1351 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1352 case ISCSI_NET_PARAM_VLAN_ENABLED:
1353 return S_IRUGO;
1354 default:
1355 return 0;
1356 }
1357 case ISCSI_HOST_PARAM:
1358 switch (param) {
1359 case ISCSI_HOST_PARAM_HWADDRESS:
1360 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1361 case ISCSI_HOST_PARAM_PORT_STATE:
1362 case ISCSI_HOST_PARAM_PORT_SPEED:
1363 return S_IRUGO;
1364 default:
1365 return 0;
1366 }
1367 case ISCSI_PARAM:
1368 switch (param) {
1369 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1370 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1371 case ISCSI_PARAM_HDRDGST_EN:
1372 case ISCSI_PARAM_DATADGST_EN:
1373 case ISCSI_PARAM_CONN_ADDRESS:
1374 case ISCSI_PARAM_CONN_PORT:
1375 case ISCSI_PARAM_EXP_STATSN:
1376 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1377 case ISCSI_PARAM_PERSISTENT_PORT:
1378 case ISCSI_PARAM_PING_TMO:
1379 case ISCSI_PARAM_RECV_TMO:
1380 case ISCSI_PARAM_INITIAL_R2T_EN:
1381 case ISCSI_PARAM_MAX_R2T:
1382 case ISCSI_PARAM_IMM_DATA_EN:
1383 case ISCSI_PARAM_FIRST_BURST:
1384 case ISCSI_PARAM_MAX_BURST:
1385 case ISCSI_PARAM_PDU_INORDER_EN:
1386 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1387 case ISCSI_PARAM_ERL:
1388 case ISCSI_PARAM_TARGET_NAME:
1389 case ISCSI_PARAM_TPGT:
1390 case ISCSI_PARAM_USERNAME:
1391 case ISCSI_PARAM_PASSWORD:
1392 case ISCSI_PARAM_USERNAME_IN:
1393 case ISCSI_PARAM_PASSWORD_IN:
1394 case ISCSI_PARAM_FAST_ABORT:
1395 case ISCSI_PARAM_ABORT_TMO:
1396 case ISCSI_PARAM_LU_RESET_TMO:
1397 case ISCSI_PARAM_IFACE_NAME:
1398 case ISCSI_PARAM_INITIATOR_NAME:
1399 return S_IRUGO;
1400 default:
1401 return 0;
1402 }
1403 }
1404
1405 return 0;
1406}
1407
