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Merge remote-tracking branch 'asoc/topic/rt5645' into asoc-next
[linux-2.6-block.git] / drivers / scsi / be2iscsi / be_iscsi.c
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1/**
2 * Copyright (C) 2005 - 2015 Emulex
3 * All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
9 *
10 * Written by: Jayamohan Kallickal (jayamohan.kallickal@avagotech.com)
11 *
12 * Contact Information:
13 * linux-drivers@avagotech.com
14 *
15 * Emulex
16 * 3333 Susan Street
17 * Costa Mesa, CA 92626
18 */
19
20#include <scsi/libiscsi.h>
21#include <scsi/scsi_transport_iscsi.h>
22#include <scsi/scsi_transport.h>
23#include <scsi/scsi_cmnd.h>
24#include <scsi/scsi_device.h>
25#include <scsi/scsi_host.h>
26#include <scsi/scsi_netlink.h>
27#include <net/netlink.h>
28#include <scsi/scsi.h>
29
30#include "be_iscsi.h"
31
32extern struct iscsi_transport beiscsi_iscsi_transport;
33
34/**
35 * beiscsi_session_create - creates a new iscsi session
36 * @cmds_max: max commands supported
37 * @qdepth: max queue depth supported
38 * @initial_cmdsn: initial iscsi CMDSN
39 */
40struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
41 u16 cmds_max,
42 u16 qdepth,
43 u32 initial_cmdsn)
44{
45 struct Scsi_Host *shost;
46 struct beiscsi_endpoint *beiscsi_ep;
47 struct iscsi_cls_session *cls_session;
48 struct beiscsi_hba *phba;
49 struct iscsi_session *sess;
50 struct beiscsi_session *beiscsi_sess;
51 struct beiscsi_io_task *io_task;
52
53
54 if (!ep) {
55 printk(KERN_ERR
56 "beiscsi_session_create: invalid ep\n");
57 return NULL;
58 }
59 beiscsi_ep = ep->dd_data;
60 phba = beiscsi_ep->phba;
61
62 if (phba->state & BE_ADAPTER_PCI_ERR) {
63 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
64 "BS_%d : PCI_ERROR Recovery\n");
65 return NULL;
66 } else {
67 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
68 "BS_%d : In beiscsi_session_create\n");
69 }
70
71 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
72 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
73 "BS_%d : Cannot handle %d cmds."
74 "Max cmds per session supported is %d. Using %d."
75 "\n", cmds_max,
76 beiscsi_ep->phba->params.wrbs_per_cxn,
77 beiscsi_ep->phba->params.wrbs_per_cxn);
78
79 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
80 }
81
82 shost = phba->shost;
83 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
84 shost, cmds_max,
85 sizeof(*beiscsi_sess),
86 sizeof(*io_task),
87 initial_cmdsn, ISCSI_MAX_TARGET);
88 if (!cls_session)
89 return NULL;
90 sess = cls_session->dd_data;
91 beiscsi_sess = sess->dd_data;
92 beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool",
93 phba->pcidev,
94 sizeof(struct be_cmd_bhs),
95 64, 0);
96 if (!beiscsi_sess->bhs_pool)
97 goto destroy_sess;
98
99 return cls_session;
100destroy_sess:
101 iscsi_session_teardown(cls_session);
102 return NULL;
103}
104
105/**
106 * beiscsi_session_destroy - destroys iscsi session
107 * @cls_session: pointer to iscsi cls session
108 *
109 * Destroys iSCSI session instance and releases
110 * resources allocated for it.
111 */
112void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
113{
114 struct iscsi_session *sess = cls_session->dd_data;
115 struct beiscsi_session *beiscsi_sess = sess->dd_data;
116
117 printk(KERN_INFO "In beiscsi_session_destroy\n");
118 pci_pool_destroy(beiscsi_sess->bhs_pool);
119 iscsi_session_teardown(cls_session);
120}
121
122/**
123 * beiscsi_conn_create - create an instance of iscsi connection
124 * @cls_session: ptr to iscsi_cls_session
125 * @cid: iscsi cid
126 */
127struct iscsi_cls_conn *
128beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
129{
130 struct beiscsi_hba *phba;
131 struct Scsi_Host *shost;
132 struct iscsi_cls_conn *cls_conn;
133 struct beiscsi_conn *beiscsi_conn;
134 struct iscsi_conn *conn;
135 struct iscsi_session *sess;
136 struct beiscsi_session *beiscsi_sess;
137
138 shost = iscsi_session_to_shost(cls_session);
139 phba = iscsi_host_priv(shost);
140
141 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
142 "BS_%d : In beiscsi_conn_create ,cid"
143 "from iscsi layer=%d\n", cid);
144
145 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
146 if (!cls_conn)
147 return NULL;
148
149 conn = cls_conn->dd_data;
150 beiscsi_conn = conn->dd_data;
151 beiscsi_conn->ep = NULL;
152 beiscsi_conn->phba = phba;
153 beiscsi_conn->conn = conn;
154 sess = cls_session->dd_data;
155 beiscsi_sess = sess->dd_data;
156 beiscsi_conn->beiscsi_sess = beiscsi_sess;
157 return cls_conn;
158}
159
160/**
161 * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
162 * @beiscsi_conn: The pointer to beiscsi_conn structure
163 * @phba: The phba instance
164 * @cid: The cid to free
165 */
166static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
167 struct beiscsi_conn *beiscsi_conn,
168 unsigned int cid)
169{
170 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
171
172 if (phba->conn_table[cri_index]) {
173 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
174 "BS_%d : Connection table already occupied. Detected clash\n");
175
176 return -EINVAL;
177 } else {
178 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
179 "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n",
180 cri_index, beiscsi_conn);
181
182 phba->conn_table[cri_index] = beiscsi_conn;
183 }
184 return 0;
185}
186
187/**
188 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
189 * @cls_session: pointer to iscsi cls session
190 * @cls_conn: pointer to iscsi cls conn
191 * @transport_fd: EP handle(64 bit)
192 *
193 * This function binds the TCP Conn with iSCSI Connection and Session.
194 */
195int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
196 struct iscsi_cls_conn *cls_conn,
197 u64 transport_fd, int is_leading)
198{
199 struct iscsi_conn *conn = cls_conn->dd_data;
200 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
201 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
202 struct beiscsi_hba *phba = iscsi_host_priv(shost);
203 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
204 struct hwi_wrb_context *pwrb_context;
205 struct beiscsi_endpoint *beiscsi_ep;
206 struct iscsi_endpoint *ep;
207
208 ep = iscsi_lookup_endpoint(transport_fd);
209 if (!ep)
210 return -EINVAL;
211
212 beiscsi_ep = ep->dd_data;
213
214 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
215 return -EINVAL;
216
217 if (beiscsi_ep->phba != phba) {
218 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
219 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
220 beiscsi_ep->phba, phba);
221
222 return -EEXIST;
223 }
224
225 pwrb_context = &phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(
226 beiscsi_ep->ep_cid)];
227
228 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
229 beiscsi_conn->ep = beiscsi_ep;
230 beiscsi_ep->conn = beiscsi_conn;
231 beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
232
233 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
234 "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",
235 beiscsi_conn, conn, beiscsi_ep->ep_cid);
236
237 return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
238}
239
240static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
241{
242 if (phba->ipv4_iface)
243 return 0;
244
245 phba->ipv4_iface = iscsi_create_iface(phba->shost,
246 &beiscsi_iscsi_transport,
247 ISCSI_IFACE_TYPE_IPV4,
248 0, 0);
249 if (!phba->ipv4_iface) {
250 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
251 "BS_%d : Could not "
252 "create default IPv4 address.\n");
253 return -ENODEV;
254 }
255
256 return 0;
257}
258
259static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
260{
261 if (phba->ipv6_iface)
262 return 0;
263
264 phba->ipv6_iface = iscsi_create_iface(phba->shost,
265 &beiscsi_iscsi_transport,
266 ISCSI_IFACE_TYPE_IPV6,
267 0, 0);
268 if (!phba->ipv6_iface) {
269 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
270 "BS_%d : Could not "
271 "create default IPv6 address.\n");
272 return -ENODEV;
273 }
274
275 return 0;
276}
277
278void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
279{
280 struct be_cmd_get_if_info_resp *if_info;
281
282 if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info)) {
283 beiscsi_create_ipv4_iface(phba);
284 kfree(if_info);
285 }
286
287 if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info)) {
288 beiscsi_create_ipv6_iface(phba);
289 kfree(if_info);
290 }
291}
292
293void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
294{
295 if (phba->ipv6_iface)
296 iscsi_destroy_iface(phba->ipv6_iface);
297 if (phba->ipv4_iface)
298 iscsi_destroy_iface(phba->ipv4_iface);
299}
300
301static int
302beiscsi_set_static_ip(struct Scsi_Host *shost,
303 struct iscsi_iface_param_info *iface_param,
304 void *data, uint32_t dt_len)
305{
306 struct beiscsi_hba *phba = iscsi_host_priv(shost);
307 struct iscsi_iface_param_info *iface_ip = NULL;
308 struct iscsi_iface_param_info *iface_subnet = NULL;
309 struct nlattr *nla;
310 int ret;
311
312
313 switch (iface_param->param) {
314 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
315 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
316 if (nla)
317 iface_ip = nla_data(nla);
318
319 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
320 if (nla)
321 iface_subnet = nla_data(nla);
322 break;
323 case ISCSI_NET_PARAM_IPV4_ADDR:
324 iface_ip = iface_param;
325 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
326 if (nla)
327 iface_subnet = nla_data(nla);
328 break;
329 case ISCSI_NET_PARAM_IPV4_SUBNET:
330 iface_subnet = iface_param;
331 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
332 if (nla)
333 iface_ip = nla_data(nla);
334 break;
335 default:
336 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
337 "BS_%d : Unsupported param %d\n",
338 iface_param->param);
339 }
340
341 if (!iface_ip || !iface_subnet) {
342 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
343 "BS_%d : IP and Subnet Mask required\n");
344 return -EINVAL;
345 }
346
347 ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
348 ISCSI_BOOTPROTO_STATIC);
349
350 return ret;
351}
352
353/**
354 * beiscsi_set_vlan_tag()- Set the VLAN TAG
355 * @shost: Scsi Host for the driver instance
356 * @iface_param: Interface paramters
357 *
358 * Set the VLAN TAG for the adapter or disable
359 * the VLAN config
360 *
361 * returns
362 * Success: 0
363 * Failure: Non-Zero Value
364 **/
365static int
366beiscsi_set_vlan_tag(struct Scsi_Host *shost,
367 struct iscsi_iface_param_info *iface_param)
368{
369 struct beiscsi_hba *phba = iscsi_host_priv(shost);
370 int ret;
371
372 /* Get the Interface Handle */
373 ret = mgmt_get_all_if_id(phba);
374 if (ret) {
375 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
376 "BS_%d : Getting Interface Handle Failed\n");
377 return ret;
378 }
379
380 switch (iface_param->param) {
381 case ISCSI_NET_PARAM_VLAN_ENABLED:
382 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
383 ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
384 break;
385 case ISCSI_NET_PARAM_VLAN_TAG:
386 ret = mgmt_set_vlan(phba,
387 *((uint16_t *)iface_param->value));
388 break;
389 default:
390 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
391 "BS_%d : Unknown Param Type : %d\n",
392 iface_param->param);
393 return -ENOSYS;
394 }
395 return ret;
396}
397
398
399static int
400beiscsi_set_ipv4(struct Scsi_Host *shost,
401 struct iscsi_iface_param_info *iface_param,
402 void *data, uint32_t dt_len)
403{
404 struct beiscsi_hba *phba = iscsi_host_priv(shost);
405 int ret = 0;
406
407 /* Check the param */
408 switch (iface_param->param) {
409 case ISCSI_NET_PARAM_IPV4_GW:
410 ret = mgmt_set_gateway(phba, iface_param);
411 break;
412 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
413 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
414 ret = mgmt_set_ip(phba, iface_param,
415 NULL, ISCSI_BOOTPROTO_DHCP);
416 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
417 ret = beiscsi_set_static_ip(shost, iface_param,
418 data, dt_len);
419 else
420 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
421 "BS_%d : Invalid BOOTPROTO: %d\n",
422 iface_param->value[0]);
423 break;
424 case ISCSI_NET_PARAM_IFACE_ENABLE:
425 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
426 ret = beiscsi_create_ipv4_iface(phba);
427 else
428 iscsi_destroy_iface(phba->ipv4_iface);
429 break;
430 case ISCSI_NET_PARAM_IPV4_SUBNET:
431 case ISCSI_NET_PARAM_IPV4_ADDR:
432 ret = beiscsi_set_static_ip(shost, iface_param,
433 data, dt_len);
434 break;
435 case ISCSI_NET_PARAM_VLAN_ENABLED:
436 case ISCSI_NET_PARAM_VLAN_TAG:
437 ret = beiscsi_set_vlan_tag(shost, iface_param);
438 break;
439 default:
440 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
441 "BS_%d : Param %d not supported\n",
442 iface_param->param);
443 }
444
445 return ret;
446}
447
448static int
449beiscsi_set_ipv6(struct Scsi_Host *shost,
450 struct iscsi_iface_param_info *iface_param,
451 void *data, uint32_t dt_len)
452{
453 struct beiscsi_hba *phba = iscsi_host_priv(shost);
454 int ret = 0;
455
456 switch (iface_param->param) {
457 case ISCSI_NET_PARAM_IFACE_ENABLE:
458 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
459 ret = beiscsi_create_ipv6_iface(phba);
460 else {
461 iscsi_destroy_iface(phba->ipv6_iface);
462 ret = 0;
463 }
464 break;
465 case ISCSI_NET_PARAM_IPV6_ADDR:
466 ret = mgmt_set_ip(phba, iface_param, NULL,
467 ISCSI_BOOTPROTO_STATIC);
468 break;
469 case ISCSI_NET_PARAM_VLAN_ENABLED:
470 case ISCSI_NET_PARAM_VLAN_TAG:
471 ret = beiscsi_set_vlan_tag(shost, iface_param);
472 break;
473 default:
474 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
475 "BS_%d : Param %d not supported\n",
476 iface_param->param);
477 }
478
479 return ret;
480}
481
482int be2iscsi_iface_set_param(struct Scsi_Host *shost,
483 void *data, uint32_t dt_len)
484{
485 struct iscsi_iface_param_info *iface_param = NULL;
486 struct beiscsi_hba *phba = iscsi_host_priv(shost);
487 struct nlattr *attrib;
488 uint32_t rm_len = dt_len;
489 int ret = 0 ;
490
491 if (phba->state & BE_ADAPTER_PCI_ERR) {
492 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
493 "BS_%d : In PCI_ERROR Recovery\n");
494 return -EBUSY;
495 }
496
497 nla_for_each_attr(attrib, data, dt_len, rm_len) {
498 iface_param = nla_data(attrib);
499
500 if (iface_param->param_type != ISCSI_NET_PARAM)
501 continue;
502
503 /*
504 * BE2ISCSI only supports 1 interface
505 */
506 if (iface_param->iface_num) {
507 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
508 "BS_%d : Invalid iface_num %d."
509 "Only iface_num 0 is supported.\n",
510 iface_param->iface_num);
511
512 return -EINVAL;
513 }
514
515 switch (iface_param->iface_type) {
516 case ISCSI_IFACE_TYPE_IPV4:
517 ret = beiscsi_set_ipv4(shost, iface_param,
518 data, dt_len);
519 break;
520 case ISCSI_IFACE_TYPE_IPV6:
521 ret = beiscsi_set_ipv6(shost, iface_param,
522 data, dt_len);
523 break;
524 default:
525 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
526 "BS_%d : Invalid iface type :%d passed\n",
527 iface_param->iface_type);
528 break;
529 }
530
531 if (ret)
532 return ret;
533 }
534
535 return ret;
536}
537
538static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
539 struct iscsi_iface *iface, int param,
540 char *buf)
541{
542 struct be_cmd_get_if_info_resp *if_info;
543 int len, ip_type = BE2_IPV4;
544
545 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
546 ip_type = BE2_IPV6;
547
548 len = mgmt_get_if_info(phba, ip_type, &if_info);
549 if (len)
550 return len;
551
552 switch (param) {
553 case ISCSI_NET_PARAM_IPV4_ADDR:
554 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
555 break;
556 case ISCSI_NET_PARAM_IPV6_ADDR:
557 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
558 break;
559 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
560 if (!if_info->dhcp_state)
561 len = sprintf(buf, "static\n");
562 else
563 len = sprintf(buf, "dhcp\n");
564 break;
565 case ISCSI_NET_PARAM_IPV4_SUBNET:
566 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
567 break;
568 case ISCSI_NET_PARAM_VLAN_ENABLED:
569 len = sprintf(buf, "%s\n",
570 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
571 ? "Disabled\n" : "Enabled\n");
572 break;
573 case ISCSI_NET_PARAM_VLAN_ID:
574 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
575 len = -EINVAL;
576 else
577 len = sprintf(buf, "%d\n",
578 (if_info->vlan_priority &
579 ISCSI_MAX_VLAN_ID));
580 break;
581 case ISCSI_NET_PARAM_VLAN_PRIORITY:
582 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
583 len = -EINVAL;
584 else
585 len = sprintf(buf, "%d\n",
586 ((if_info->vlan_priority >> 13) &
587 ISCSI_MAX_VLAN_PRIORITY));
588 break;
589 default:
590 WARN_ON(1);
591 }
592
593 kfree(if_info);
594 return len;
595}
596
597int be2iscsi_iface_get_param(struct iscsi_iface *iface,
598 enum iscsi_param_type param_type,
599 int param, char *buf)
600{
601 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
602 struct beiscsi_hba *phba = iscsi_host_priv(shost);
603 struct be_cmd_get_def_gateway_resp gateway;
604 int len = -ENOSYS;
605
606 if (phba->state & BE_ADAPTER_PCI_ERR) {
607 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
608 "BS_%d : In PCI_ERROR Recovery\n");
609 return -EBUSY;
610 }
611
612 switch (param) {
613 case ISCSI_NET_PARAM_IPV4_ADDR:
614 case ISCSI_NET_PARAM_IPV4_SUBNET:
615 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
616 case ISCSI_NET_PARAM_IPV6_ADDR:
617 case ISCSI_NET_PARAM_VLAN_ENABLED:
618 case ISCSI_NET_PARAM_VLAN_ID:
619 case ISCSI_NET_PARAM_VLAN_PRIORITY:
620 len = be2iscsi_get_if_param(phba, iface, param, buf);
621 break;
622 case ISCSI_NET_PARAM_IFACE_ENABLE:
623 len = sprintf(buf, "enabled\n");
624 break;
625 case ISCSI_NET_PARAM_IPV4_GW:
626 memset(&gateway, 0, sizeof(gateway));
627 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
628 if (!len)
629 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
630 break;
631 default:
632 len = -ENOSYS;
633 }
634
635 return len;
636}
637
638/**
639 * beiscsi_ep_get_param - get the iscsi parameter
640 * @ep: pointer to iscsi ep
641 * @param: parameter type identifier
642 * @buf: buffer pointer
643 *
644 * returns iscsi parameter
645 */
646int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
647 enum iscsi_param param, char *buf)
648{
649 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
650 int len = 0;
651
652 beiscsi_log(beiscsi_ep->phba, KERN_INFO,
653 BEISCSI_LOG_CONFIG,
654 "BS_%d : In beiscsi_ep_get_param,"
655 " param= %d\n", param);
656
657 switch (param) {
658 case ISCSI_PARAM_CONN_PORT:
659 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
660 break;
661 case ISCSI_PARAM_CONN_ADDRESS:
662 if (beiscsi_ep->ip_type == BE2_IPV4)
663 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
664 else
665 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
666 break;
667 default:
668 return -ENOSYS;
669 }
670 return len;
671}
672
673int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
674 enum iscsi_param param, char *buf, int buflen)
675{
676 struct iscsi_conn *conn = cls_conn->dd_data;
677 struct iscsi_session *session = conn->session;
678 struct beiscsi_hba *phba = NULL;
679 int ret;
680
681 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
682 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
683 "BS_%d : In beiscsi_conn_set_param,"
684 " param= %d\n", param);
685
686 ret = iscsi_set_param(cls_conn, param, buf, buflen);
687 if (ret)
688 return ret;
689 /*
690 * If userspace tried to set the value to higher than we can
691 * support override here.
692 */
693 switch (param) {
694 case ISCSI_PARAM_FIRST_BURST:
695 if (session->first_burst > 8192)
696 session->first_burst = 8192;
697 break;
698 case ISCSI_PARAM_MAX_RECV_DLENGTH:
699 if (conn->max_recv_dlength > 65536)
700 conn->max_recv_dlength = 65536;
701 break;
702 case ISCSI_PARAM_MAX_BURST:
703 if (session->max_burst > 262144)
704 session->max_burst = 262144;
705 break;
706 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
707 if (conn->max_xmit_dlength > 65536)
708 conn->max_xmit_dlength = 65536;
709 default:
710 return 0;
711 }
712
713 return 0;
714}
715
716/**
717 * beiscsi_get_initname - Read Initiator Name from flash
718 * @buf: buffer bointer
719 * @phba: The device priv structure instance
720 *
721 * returns number of bytes
722 */
723static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
724{
725 int rc;
726 unsigned int tag;
727 struct be_mcc_wrb *wrb;
728 struct be_cmd_hba_name *resp;
729
730 tag = be_cmd_get_initname(phba);
731 if (!tag) {
732 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
733 "BS_%d : Getting Initiator Name Failed\n");
734
735 return -EBUSY;
736 }
737
738 rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
739 if (rc) {
740 beiscsi_log(phba, KERN_ERR,
741 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
742 "BS_%d : Initiator Name MBX Failed\n");
743 return rc;
744 }
745
746 resp = embedded_payload(wrb);
747 rc = sprintf(buf, "%s\n", resp->initiator_name);
748 return rc;
749}
750
751/**
752 * beiscsi_get_port_state - Get the Port State
753 * @shost : pointer to scsi_host structure
754 *
755 */
756static void beiscsi_get_port_state(struct Scsi_Host *shost)
757{
758 struct beiscsi_hba *phba = iscsi_host_priv(shost);
759 struct iscsi_cls_host *ihost = shost->shost_data;
760
761 ihost->port_state = (phba->state & BE_ADAPTER_LINK_UP) ?
762 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
763}
764
765/**
766 * beiscsi_get_port_speed - Get the Port Speed from Adapter
767 * @shost : pointer to scsi_host structure
768 *
769 */
770static void beiscsi_get_port_speed(struct Scsi_Host *shost)
771{
772 struct beiscsi_hba *phba = iscsi_host_priv(shost);
773 struct iscsi_cls_host *ihost = shost->shost_data;
774
775 switch (phba->port_speed) {
776 case BE2ISCSI_LINK_SPEED_10MBPS:
777 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
778 break;
779 case BE2ISCSI_LINK_SPEED_100MBPS:
780 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
781 break;
782 case BE2ISCSI_LINK_SPEED_1GBPS:
783 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
784 break;
785 case BE2ISCSI_LINK_SPEED_10GBPS:
786 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
787 break;
788 case BE2ISCSI_LINK_SPEED_25GBPS:
789 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
790 break;
791 case BE2ISCSI_LINK_SPEED_40GBPS:
792 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
793 break;
794 default:
795 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
796 }
797}
798
799/**
800 * beiscsi_get_host_param - get the iscsi parameter
801 * @shost: pointer to scsi_host structure
802 * @param: parameter type identifier
803 * @buf: buffer pointer
804 *
805 * returns host parameter
806 */
807int beiscsi_get_host_param(struct Scsi_Host *shost,
808 enum iscsi_host_param param, char *buf)
809{
810 struct beiscsi_hba *phba = iscsi_host_priv(shost);
811 int status = 0;
812
813
814 if (phba->state & BE_ADAPTER_PCI_ERR) {
815 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
816 "BS_%d : In PCI_ERROR Recovery\n");
817 return -EBUSY;
818 } else {
819 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
820 "BS_%d : In beiscsi_get_host_param,"
821 " param = %d\n", param);
822 }
823
824 switch (param) {
825 case ISCSI_HOST_PARAM_HWADDRESS:
826 status = beiscsi_get_macaddr(buf, phba);
827 if (status < 0) {
828 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
829 "BS_%d : beiscsi_get_macaddr Failed\n");
830 return status;
831 }
832 break;
833 case ISCSI_HOST_PARAM_INITIATOR_NAME:
834 status = beiscsi_get_initname(buf, phba);
835 if (status < 0) {
836 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
837 "BS_%d : Retreiving Initiator Name Failed\n");
838 return status;
839 }
840 break;
841 case ISCSI_HOST_PARAM_PORT_STATE:
842 beiscsi_get_port_state(shost);
843 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
844 break;
845 case ISCSI_HOST_PARAM_PORT_SPEED:
846 beiscsi_get_port_speed(shost);
847 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
848 break;
849 default:
850 return iscsi_host_get_param(shost, param, buf);
851 }
852 return status;
853}
854
855int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
856{
857 struct be_cmd_get_nic_conf_resp resp;
858 int rc;
859
860 if (phba->mac_addr_set)
861 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
862
863 memset(&resp, 0, sizeof(resp));
864 rc = mgmt_get_nic_conf(phba, &resp);
865 if (rc)
866 return rc;
867
868 phba->mac_addr_set = true;
869 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
870 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
871}
872
873/**
874 * beiscsi_conn_get_stats - get the iscsi stats
875 * @cls_conn: pointer to iscsi cls conn
876 * @stats: pointer to iscsi_stats structure
877 *
878 * returns iscsi stats
879 */
880void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
881 struct iscsi_stats *stats)
882{
883 struct iscsi_conn *conn = cls_conn->dd_data;
884 struct beiscsi_hba *phba = NULL;
885
886 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
887 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
888 "BS_%d : In beiscsi_conn_get_stats\n");
889
890 stats->txdata_octets = conn->txdata_octets;
891 stats->rxdata_octets = conn->rxdata_octets;
892 stats->dataout_pdus = conn->dataout_pdus_cnt;
893 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
894 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
895 stats->datain_pdus = conn->datain_pdus_cnt;
896 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
897 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
898 stats->r2t_pdus = conn->r2t_pdus_cnt;
899 stats->digest_err = 0;
900 stats->timeout_err = 0;
901 stats->custom_length = 1;
902 strcpy(stats->custom[0].desc, "eh_abort_cnt");
903 stats->custom[0].value = conn->eh_abort_cnt;
904}
905
906/**
907 * beiscsi_set_params_for_offld - get the parameters for offload
908 * @beiscsi_conn: pointer to beiscsi_conn
909 * @params: pointer to offload_params structure
910 */
911static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
912 struct beiscsi_offload_params *params)
913{
914 struct iscsi_conn *conn = beiscsi_conn->conn;
915 struct iscsi_session *session = conn->session;
916
917 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
918 params, session->max_burst);
919 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
920 max_send_data_segment_length, params,
921 conn->max_xmit_dlength);
922 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
923 params, session->first_burst);
924 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
925 session->erl);
926 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
927 conn->datadgst_en);
928 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
929 conn->hdrdgst_en);
930 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
931 session->initial_r2t_en);
932 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
933 session->imm_data_en);
934 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
935 data_seq_inorder, params,
936 session->dataseq_inorder_en);
937 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
938 pdu_seq_inorder, params,
939 session->pdu_inorder_en);
940 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
941 session->max_r2t);
942 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
943 (conn->exp_statsn - 1));
944 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
945 max_recv_data_segment_length, params,
946 conn->max_recv_dlength);
947
948}
949
950/**
951 * beiscsi_conn_start - offload of session to chip
952 * @cls_conn: pointer to beiscsi_conn
953 */
954int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
955{
956 struct iscsi_conn *conn = cls_conn->dd_data;
957 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
958 struct beiscsi_endpoint *beiscsi_ep;
959 struct beiscsi_offload_params params;
960 struct beiscsi_hba *phba;
961
962 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
963
964 if (phba->state & BE_ADAPTER_PCI_ERR) {
965 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
966 "BS_%d : In PCI_ERROR Recovery\n");
967 return -EBUSY;
968 } else {
969 beiscsi_log(beiscsi_conn->phba, KERN_INFO,
970 BEISCSI_LOG_CONFIG,
971 "BS_%d : In beiscsi_conn_start\n");
972 }
973
974 memset(&params, 0, sizeof(struct beiscsi_offload_params));
975 beiscsi_ep = beiscsi_conn->ep;
976 if (!beiscsi_ep)
977 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
978 BEISCSI_LOG_CONFIG,
979 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
980
981 beiscsi_conn->login_in_progress = 0;
982 beiscsi_set_params_for_offld(beiscsi_conn, &params);
983 beiscsi_offload_connection(beiscsi_conn, &params);
984 iscsi_conn_start(cls_conn);
985 return 0;
986}
987
988/**
989 * beiscsi_get_cid - Allocate a cid
990 * @phba: The phba instance
991 */
992static int beiscsi_get_cid(struct beiscsi_hba *phba)
993{
994 unsigned short cid = 0xFFFF, cid_from_ulp;
995 struct ulp_cid_info *cid_info = NULL;
996 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
997
998 /* Find the ULP which has more CID available */
999 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
1000 BEISCSI_ULP0_AVLBL_CID(phba) : 0;
1001 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
1002 BEISCSI_ULP1_AVLBL_CID(phba) : 0;
1003 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
1004 BEISCSI_ULP0 : BEISCSI_ULP1;
1005
1006 if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {
1007 cid_info = phba->cid_array_info[cid_from_ulp];
1008 if (!cid_info->avlbl_cids)
1009 return cid;
1010
1011 cid = cid_info->cid_array[cid_info->cid_alloc++];
1012
1013 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(
1014 phba, cid_from_ulp))
1015 cid_info->cid_alloc = 0;
1016
1017 cid_info->avlbl_cids--;
1018 }
1019 return cid;
1020}
1021
1022/**
1023 * beiscsi_put_cid - Free the cid
1024 * @phba: The phba for which the cid is being freed
1025 * @cid: The cid to free
1026 */
1027static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1028{
1029 uint16_t cid_post_ulp;
1030 struct hwi_controller *phwi_ctrlr;
1031 struct hwi_wrb_context *pwrb_context;
1032 struct ulp_cid_info *cid_info = NULL;
1033 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1034
1035 phwi_ctrlr = phba->phwi_ctrlr;
1036 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1037 cid_post_ulp = pwrb_context->ulp_num;
1038
1039 cid_info = phba->cid_array_info[cid_post_ulp];
1040 cid_info->avlbl_cids++;
1041
1042 cid_info->cid_array[cid_info->cid_free++] = cid;
1043 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1044 cid_info->cid_free = 0;
1045}
1046
1047/**
1048 * beiscsi_free_ep - free endpoint
1049 * @ep: pointer to iscsi endpoint structure
1050 */
1051static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1052{
1053 struct beiscsi_hba *phba = beiscsi_ep->phba;
1054 struct beiscsi_conn *beiscsi_conn;
1055
1056 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1057 beiscsi_ep->phba = NULL;
1058 phba->ep_array[BE_GET_CRI_FROM_CID
1059 (beiscsi_ep->ep_cid)] = NULL;
1060
1061 /**
1062 * Check if any connection resource allocated by driver
1063 * is to be freed.This case occurs when target redirection
1064 * or connection retry is done.
1065 **/
1066 if (!beiscsi_ep->conn)
1067 return;
1068
1069 beiscsi_conn = beiscsi_ep->conn;
1070 if (beiscsi_conn->login_in_progress) {
1071 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1072 beiscsi_conn->task);
1073 beiscsi_conn->login_in_progress = 0;
1074 }
1075}
1076
1077/**
1078 * beiscsi_open_conn - Ask FW to open a TCP connection
1079 * @ep: endpoint to be used
1080 * @src_addr: The source IP address
1081 * @dst_addr: The Destination IP address
1082 *
1083 * Asks the FW to open a TCP connection
1084 */
1085static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1086 struct sockaddr *src_addr,
1087 struct sockaddr *dst_addr, int non_blocking)
1088{
1089 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1090 struct beiscsi_hba *phba = beiscsi_ep->phba;
1091 struct tcp_connect_and_offload_out *ptcpcnct_out;
1092 struct be_dma_mem nonemb_cmd;
1093 unsigned int tag, req_memsize;
1094 int ret = -ENOMEM;
1095
1096 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1097 "BS_%d : In beiscsi_open_conn\n");
1098
1099 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1100 if (beiscsi_ep->ep_cid == 0xFFFF) {
1101 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1102 "BS_%d : No free cid available\n");
1103 return ret;
1104 }
1105
1106 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1107 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1108 beiscsi_ep->ep_cid);
1109
1110 phba->ep_array[BE_GET_CRI_FROM_CID
1111 (beiscsi_ep->ep_cid)] = ep;
1112
1113 beiscsi_ep->cid_vld = 0;
1114
1115 if (is_chip_be2_be3r(phba))
1116 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1117 else
1118 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1119
1120 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1121 req_memsize,
1122 &nonemb_cmd.dma);
1123 if (nonemb_cmd.va == NULL) {
1124
1125 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1126 "BS_%d : Failed to allocate memory for"
1127 " mgmt_open_connection\n");
1128
1129 beiscsi_free_ep(beiscsi_ep);
1130 return -ENOMEM;
1131 }
1132 nonemb_cmd.size = req_memsize;
1133 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1134 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1135 if (tag <= 0) {
1136 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1137 "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1138 beiscsi_ep->ep_cid);
1139
1140 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1141 nonemb_cmd.va, nonemb_cmd.dma);
1142 beiscsi_free_ep(beiscsi_ep);
1143 return -EAGAIN;
1144 }
1145
1146 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1147 if (ret) {
1148 beiscsi_log(phba, KERN_ERR,
1149 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1150 "BS_%d : mgmt_open_connection Failed");
1151
1152 if (ret != -EBUSY)
1153 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1154 nonemb_cmd.va, nonemb_cmd.dma);
1155
1156 beiscsi_free_ep(beiscsi_ep);
1157 return ret;
1158 }
1159
1160 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1161 beiscsi_ep = ep->dd_data;
1162 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1163 beiscsi_ep->cid_vld = 1;
1164 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1165 "BS_%d : mgmt_open_connection Success\n");
1166
1167 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1168 nonemb_cmd.va, nonemb_cmd.dma);
1169 return 0;
1170}
1171
1172/**
1173 * beiscsi_ep_connect - Ask chip to create TCP Conn
1174 * @scsi_host: Pointer to scsi_host structure
1175 * @dst_addr: The IP address of Target
1176 * @non_blocking: blocking or non-blocking call
1177 *
1178 * This routines first asks chip to create a connection and then allocates an EP
1179 */
1180struct iscsi_endpoint *
1181beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1182 int non_blocking)
1183{
1184 struct beiscsi_hba *phba;
1185 struct beiscsi_endpoint *beiscsi_ep;
1186 struct iscsi_endpoint *ep;
1187 int ret;
1188
1189 if (shost)
1190 phba = iscsi_host_priv(shost);
1191 else {
1192 ret = -ENXIO;
1193 printk(KERN_ERR
1194 "beiscsi_ep_connect shost is NULL\n");
1195 return ERR_PTR(ret);
1196 }
1197
1198 if (beiscsi_error(phba)) {
1199 ret = -EIO;
1200 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1201 "BS_%d : The FW state Not Stable!!!\n");
1202 return ERR_PTR(ret);
1203 }
1204
1205 if (phba->state & BE_ADAPTER_PCI_ERR) {
1206 ret = -EBUSY;
1207 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1208 "BS_%d : In PCI_ERROR Recovery\n");
1209 return ERR_PTR(ret);
1210 } else if (phba->state & BE_ADAPTER_LINK_DOWN) {
1211 ret = -EBUSY;
1212 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1213 "BS_%d : The Adapter Port state is Down!!!\n");
1214 return ERR_PTR(ret);
1215 }
1216
1217 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1218 if (!ep) {
1219 ret = -ENOMEM;
1220 return ERR_PTR(ret);
1221 }
1222
1223 beiscsi_ep = ep->dd_data;
1224 beiscsi_ep->phba = phba;
1225 beiscsi_ep->openiscsi_ep = ep;
1226 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1227 if (ret) {
1228 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1229 "BS_%d : Failed in beiscsi_open_conn\n");
1230 goto free_ep;
1231 }
1232
1233 return ep;
1234
1235free_ep:
1236 iscsi_destroy_endpoint(ep);
1237 return ERR_PTR(ret);
1238}
1239
1240/**
1241 * beiscsi_ep_poll - Poll to see if connection is established
1242 * @ep: endpoint to be used
1243 * @timeout_ms: timeout specified in millisecs
1244 *
1245 * Poll to see if TCP connection established
1246 */
1247int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1248{
1249 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1250
1251 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1252 "BS_%d : In beiscsi_ep_poll\n");
1253
1254 if (beiscsi_ep->cid_vld == 1)
1255 return 1;
1256 else
1257 return 0;
1258}
1259
1260/**
1261 * beiscsi_flush_cq()- Flush the CQ created.
1262 * @phba: ptr device priv structure.
1263 *
1264 * Before the connection resource are freed flush
1265 * all the CQ enteries
1266 **/
1267static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1268{
1269 uint16_t i;
1270 struct be_eq_obj *pbe_eq;
1271 struct hwi_controller *phwi_ctrlr;
1272 struct hwi_context_memory *phwi_context;
1273
1274 phwi_ctrlr = phba->phwi_ctrlr;
1275 phwi_context = phwi_ctrlr->phwi_ctxt;
1276
1277 for (i = 0; i < phba->num_cpus; i++) {
1278 pbe_eq = &phwi_context->be_eq[i];
1279 irq_poll_disable(&pbe_eq->iopoll);
1280 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1281 irq_poll_enable(&pbe_eq->iopoll);
1282 }
1283}
1284
1285/**
1286 * beiscsi_close_conn - Upload the connection
1287 * @ep: The iscsi endpoint
1288 * @flag: The type of connection closure
1289 */
1290static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
1291{
1292 int ret = 0;
1293 unsigned int tag;
1294 struct beiscsi_hba *phba = beiscsi_ep->phba;
1295
1296 tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1297 if (!tag) {
1298 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1299 "BS_%d : upload failed for cid 0x%x\n",
1300 beiscsi_ep->ep_cid);
1301
1302 ret = -EAGAIN;
1303 }
1304
1305 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1306
1307 /* Flush the CQ entries */
1308 beiscsi_flush_cq(phba);
1309
1310 return ret;
1311}
1312
1313/**
1314 * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1315 * @phba: The phba instance
1316 * @cid: The cid to free
1317 */
1318static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1319 unsigned int cid)
1320{
1321 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1322
1323 if (phba->conn_table[cri_index])
1324 phba->conn_table[cri_index] = NULL;
1325 else {
1326 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1327 "BS_%d : Connection table Not occupied.\n");
1328 return -EINVAL;
1329 }
1330 return 0;
1331}
1332
1333/**
1334 * beiscsi_ep_disconnect - Tears down the TCP connection
1335 * @ep: endpoint to be used
1336 *
1337 * Tears down the TCP connection
1338 */
1339void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1340{
1341 struct beiscsi_conn *beiscsi_conn;
1342 struct beiscsi_endpoint *beiscsi_ep;
1343 struct beiscsi_hba *phba;
1344 unsigned int tag;
1345 uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1346 unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1347
1348 beiscsi_ep = ep->dd_data;
1349 phba = beiscsi_ep->phba;
1350 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1351 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1352 beiscsi_ep->ep_cid);
1353
1354 if (beiscsi_ep->conn) {
1355 beiscsi_conn = beiscsi_ep->conn;
1356 iscsi_suspend_queue(beiscsi_conn->conn);
1357 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1358 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1359 } else {
1360 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1361 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1362 }
1363
1364 if (phba->state & BE_ADAPTER_PCI_ERR) {
1365 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1366 "BS_%d : PCI_ERROR Recovery\n");
1367 goto free_ep;
1368 }
1369
1370 tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1371 beiscsi_ep->ep_cid,
1372 mgmt_invalidate_flag,
1373 savecfg_flag);
1374 if (!tag) {
1375 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1376 "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1377 beiscsi_ep->ep_cid);
1378 }
1379
1380 beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1381 beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1382free_ep:
1383 msleep(BEISCSI_LOGOUT_SYNC_DELAY);
1384 beiscsi_free_ep(beiscsi_ep);
1385 beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1386 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1387}
1388
1389umode_t be2iscsi_attr_is_visible(int param_type, int param)
1390{
1391 switch (param_type) {
1392 case ISCSI_NET_PARAM:
1393 switch (param) {
1394 case ISCSI_NET_PARAM_IFACE_ENABLE:
1395 case ISCSI_NET_PARAM_IPV4_ADDR:
1396 case ISCSI_NET_PARAM_IPV4_SUBNET:
1397 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1398 case ISCSI_NET_PARAM_IPV4_GW:
1399 case ISCSI_NET_PARAM_IPV6_ADDR:
1400 case ISCSI_NET_PARAM_VLAN_ID:
1401 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1402 case ISCSI_NET_PARAM_VLAN_ENABLED:
1403 return S_IRUGO;
1404 default:
1405 return 0;
1406 }
1407 case ISCSI_HOST_PARAM:
1408 switch (param) {
1409 case ISCSI_HOST_PARAM_HWADDRESS:
1410 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1411 case ISCSI_HOST_PARAM_PORT_STATE:
1412 case ISCSI_HOST_PARAM_PORT_SPEED:
1413 return S_IRUGO;
1414 default:
1415 return 0;
1416 }
1417 case ISCSI_PARAM:
1418 switch (param) {
1419 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1420 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1421 case ISCSI_PARAM_HDRDGST_EN:
1422 case ISCSI_PARAM_DATADGST_EN:
1423 case ISCSI_PARAM_CONN_ADDRESS:
1424 case ISCSI_PARAM_CONN_PORT:
1425 case ISCSI_PARAM_EXP_STATSN:
1426 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1427 case ISCSI_PARAM_PERSISTENT_PORT:
1428 case ISCSI_PARAM_PING_TMO:
1429 case ISCSI_PARAM_RECV_TMO:
1430 case ISCSI_PARAM_INITIAL_R2T_EN:
1431 case ISCSI_PARAM_MAX_R2T:
1432 case ISCSI_PARAM_IMM_DATA_EN:
1433 case ISCSI_PARAM_FIRST_BURST:
1434 case ISCSI_PARAM_MAX_BURST:
1435 case ISCSI_PARAM_PDU_INORDER_EN:
1436 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1437 case ISCSI_PARAM_ERL:
1438 case ISCSI_PARAM_TARGET_NAME:
1439 case ISCSI_PARAM_TPGT:
1440 case ISCSI_PARAM_USERNAME:
1441 case ISCSI_PARAM_PASSWORD:
1442 case ISCSI_PARAM_USERNAME_IN:
1443 case ISCSI_PARAM_PASSWORD_IN:
1444 case ISCSI_PARAM_FAST_ABORT:
1445 case ISCSI_PARAM_ABORT_TMO:
1446 case ISCSI_PARAM_LU_RESET_TMO:
1447 case ISCSI_PARAM_IFACE_NAME:
1448 case ISCSI_PARAM_INITIATOR_NAME:
1449 return S_IRUGO;
1450 default:
1451 return 0;
1452 }
1453 }
1454
1455 return 0;
1456}
Linux 6.x block layer and io_uring tree(s)