1 /*
2 * Copyright 2017 Broadcom. All Rights Reserved.
3 * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
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 * Contact Information:
11 * linux-drivers@broadcom.com
12 *
13 */
14
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
27 extern struct iscsi_transport beiscsi_iscsi_transport;
28
29 /**
30 * beiscsi_session_create - creates a new iscsi session
31 * @cmds_max: max commands supported
32 * @qdepth: max queue depth supported
33 * @initial_cmdsn: initial iscsi CMDSN
34 */
beiscsi_session_create(struct iscsi_endpoint * ep,u16 cmds_max,u16 qdepth,u32 initial_cmdsn)35 struct 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;
93 destroy_sess:
94 iscsi_session_teardown(cls_session);
95 return NULL;
96 }
97
98 /**
99 * beiscsi_session_destroy - destroys iscsi session
100 * @cls_session: pointer to iscsi cls session
101 *
102 * Destroys iSCSI session instance and releases
103 * resources allocated for it.
104 */
beiscsi_session_destroy(struct iscsi_cls_session * cls_session)105 void 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 * beiscsi_session_fail(): Closing session with appropriate error
117 * @cls_session: ptr to session
118 **/
beiscsi_session_fail(struct iscsi_cls_session * cls_session)119 void 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 * beiscsi_conn_create - create an instance of iscsi connection
127 * @cls_session: ptr to iscsi_cls_session
128 * @cid: iscsi cid
129 */
130 struct iscsi_cls_conn *
beiscsi_conn_create(struct iscsi_cls_session * cls_session,u32 cid)131 beiscsi_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 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
165 * @cls_session: pointer to iscsi cls session
166 * @cls_conn: pointer to iscsi cls conn
167 * @transport_fd: EP handle(64 bit)
168 *
169 * This function binds the TCP Conn with iSCSI Connection and Session.
170 */
beiscsi_conn_bind(struct iscsi_cls_session * cls_session,struct iscsi_cls_conn * cls_conn,u64 transport_fd,int is_leading)171 int 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 * Each connection is associated with a WRBQ kept in wrb_context.
220 * Store doorbell offset for transmit path.
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
beiscsi_iface_create_ipv4(struct beiscsi_hba * phba)231 static 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
beiscsi_iface_create_ipv6(struct beiscsi_hba * phba)250 static 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
beiscsi_iface_create_default(struct beiscsi_hba * phba)269 void 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
beiscsi_iface_destroy_default(struct beiscsi_hba * phba)284 void 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 * beiscsi_set_vlan_tag()- Set the VLAN TAG
298 * @shost: Scsi Host for the driver instance
299 * @iface_param: Interface paramters
300 *
301 * Set the VLAN TAG for the adapter or disable
302 * the VLAN config
303 *
304 * returns
305 * Success: 0
306 * Failure: Non-Zero Value
307 **/
308 static int
beiscsi_iface_config_vlan(struct Scsi_Host * shost,struct iscsi_iface_param_info * iface_param)309 beiscsi_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
330 static int
beiscsi_iface_config_ipv4(struct Scsi_Host * shost,struct iscsi_iface_param_info * info,void * data,uint32_t dt_len)331 beiscsi_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 /* Check the param */
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 /* release DHCP IP address */
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 * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP
379 * and subnet both. Find IP to be applied for this subnet.
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
395 static int
beiscsi_iface_config_ipv6(struct Scsi_Host * shost,struct iscsi_iface_param_info * iface_param,void * data,uint32_t dt_len)396 beiscsi_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
beiscsi_iface_set_param(struct Scsi_Host * shost,void * data,uint32_t dt_len)421 int 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 /* update interface_handle */
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 * BE2ISCSI only supports 1 interface
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
__beiscsi_iface_get_param(struct beiscsi_hba * phba,struct iscsi_iface * iface,int param,char * buf)503 static 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
beiscsi_iface_get_param(struct iscsi_iface * iface,enum iscsi_param_type param_type,int param,char * buf)562 int 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 * beiscsi_ep_get_param - get the iscsi parameter
610 * @ep: pointer to iscsi ep
611 * @param: parameter type identifier
612 * @buf: buffer pointer
613 *
614 * returns iscsi parameter
615 */
beiscsi_ep_get_param(struct iscsi_endpoint * ep,enum iscsi_param param,char * buf)616 int 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
beiscsi_set_param(struct iscsi_cls_conn * cls_conn,enum iscsi_param param,char * buf,int buflen)643 int 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 * If userspace tried to set the value to higher than we can
661 * support override here.
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 * beiscsi_get_initname - Read Initiator Name from flash
688 * @buf: buffer bointer
689 * @phba: The device priv structure instance
690 *
691 * returns number of bytes
692 */
beiscsi_get_initname(char * buf,struct beiscsi_hba * phba)693 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
694 {
695 int rc;
696 unsigned int tag;
697 struct be_mcc_wrb *wrb;
698 struct be_cmd_hba_name *resp;
699
700 tag = be_cmd_get_initname(phba);
701 if (!tag) {
702 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
703 "BS_%d : Getting Initiator Name Failed\n");
704
705 return -EBUSY;
706 }
707
708 rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
709 if (rc) {
710 beiscsi_log(phba, KERN_ERR,
711 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
712 "BS_%d : Initiator Name MBX Failed\n");
713 return rc;
714 }
715
716 resp = embedded_payload(wrb);
717 rc = sprintf(buf, "%s\n", resp->initiator_name);
718 return rc;
719 }
720
721 /**
722 * beiscsi_get_port_state - Get the Port State
723 * @shost : pointer to scsi_host structure
724 *
725 */
beiscsi_get_port_state(struct Scsi_Host * shost)726 static void beiscsi_get_port_state(struct Scsi_Host *shost)
727 {
728 struct beiscsi_hba *phba = iscsi_host_priv(shost);
729 struct iscsi_cls_host *ihost = shost->shost_data;
730
731 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ?
732 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
733 }
734
735 /**
736 * beiscsi_get_port_speed - Get the Port Speed from Adapter
737 * @shost : pointer to scsi_host structure
738 *
739 */
beiscsi_get_port_speed(struct Scsi_Host * shost)740 static void beiscsi_get_port_speed(struct Scsi_Host *shost)
741 {
742 struct beiscsi_hba *phba = iscsi_host_priv(shost);
743 struct iscsi_cls_host *ihost = shost->shost_data;
744
745 switch (phba->port_speed) {
746 case BE2ISCSI_LINK_SPEED_10MBPS:
747 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
748 break;
749 case BE2ISCSI_LINK_SPEED_100MBPS:
750 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
751 break;
752 case BE2ISCSI_LINK_SPEED_1GBPS:
753 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
754 break;
755 case BE2ISCSI_LINK_SPEED_10GBPS:
756 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
757 break;
758 case BE2ISCSI_LINK_SPEED_25GBPS:
759 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
760 break;
761 case BE2ISCSI_LINK_SPEED_40GBPS:
762 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
763 break;
764 default:
765 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
766 }
767 }
768
769 /**
770 * beiscsi_get_host_param - get the iscsi parameter
771 * @shost: pointer to scsi_host structure
772 * @param: parameter type identifier
773 * @buf: buffer pointer
774 *
775 * returns host parameter
776 */
beiscsi_get_host_param(struct Scsi_Host * shost,enum iscsi_host_param param,char * buf)777 int beiscsi_get_host_param(struct Scsi_Host *shost,
778 enum iscsi_host_param param, char *buf)
779 {
780 struct beiscsi_hba *phba = iscsi_host_priv(shost);
781 int status = 0;
782
783 if (!beiscsi_hba_is_online(phba)) {
784 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
785 "BS_%d : HBA in error 0x%lx\n", phba->state);
786 return -EBUSY;
787 }
788 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
789 "BS_%d : In beiscsi_get_host_param, param = %d\n", param);
790
791 switch (param) {
792 case ISCSI_HOST_PARAM_HWADDRESS:
793 status = beiscsi_get_macaddr(buf, phba);
794 if (status < 0) {
795 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
796 "BS_%d : beiscsi_get_macaddr Failed\n");
797 return status;
798 }
799 break;
800 case ISCSI_HOST_PARAM_INITIATOR_NAME:
801 status = beiscsi_get_initname(buf, phba);
802 if (status < 0) {
803 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
804 "BS_%d : Retreiving Initiator Name Failed\n");
805 return status;
806 }
807 break;
808 case ISCSI_HOST_PARAM_PORT_STATE:
809 beiscsi_get_port_state(shost);
810 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
811 break;
812 case ISCSI_HOST_PARAM_PORT_SPEED:
813 beiscsi_get_port_speed(shost);
814 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
815 break;
816 default:
817 return iscsi_host_get_param(shost, param, buf);
818 }
819 return status;
820 }
821
beiscsi_get_macaddr(char * buf,struct beiscsi_hba * phba)822 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
823 {
824 struct be_cmd_get_nic_conf_resp resp;
825 int rc;
826
827 if (phba->mac_addr_set)
828 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
829
830 memset(&resp, 0, sizeof(resp));
831 rc = mgmt_get_nic_conf(phba, &resp);
832 if (rc)
833 return rc;
834
835 phba->mac_addr_set = true;
836 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
837 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
838 }
839
840 /**
841 * beiscsi_conn_get_stats - get the iscsi stats
842 * @cls_conn: pointer to iscsi cls conn
843 * @stats: pointer to iscsi_stats structure
844 *
845 * returns iscsi stats
846 */
beiscsi_conn_get_stats(struct iscsi_cls_conn * cls_conn,struct iscsi_stats * stats)847 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
848 struct iscsi_stats *stats)
849 {
850 struct iscsi_conn *conn = cls_conn->dd_data;
851 struct beiscsi_hba *phba = NULL;
852
853 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
854 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
855 "BS_%d : In beiscsi_conn_get_stats\n");
856
857 stats->txdata_octets = conn->txdata_octets;
858 stats->rxdata_octets = conn->rxdata_octets;
859 stats->dataout_pdus = conn->dataout_pdus_cnt;
860 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
861 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
862 stats->datain_pdus = conn->datain_pdus_cnt;
863 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
864 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
865 stats->r2t_pdus = conn->r2t_pdus_cnt;
866 stats->digest_err = 0;
867 stats->timeout_err = 0;
868 stats->custom_length = 1;
869 strcpy(stats->custom[0].desc, "eh_abort_cnt");
870 stats->custom[0].value = conn->eh_abort_cnt;
871 }
872
873 /**
874 * beiscsi_set_params_for_offld - get the parameters for offload
875 * @beiscsi_conn: pointer to beiscsi_conn
876 * @params: pointer to offload_params structure
877 */
beiscsi_set_params_for_offld(struct beiscsi_conn * beiscsi_conn,struct beiscsi_offload_params * params)878 static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
879 struct beiscsi_offload_params *params)
880 {
881 struct iscsi_conn *conn = beiscsi_conn->conn;
882 struct iscsi_session *session = conn->session;
883
884 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
885 params, session->max_burst);
886 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
887 max_send_data_segment_length, params,
888 conn->max_xmit_dlength);
889 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
890 params, session->first_burst);
891 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
892 session->erl);
893 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
894 conn->datadgst_en);
895 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
896 conn->hdrdgst_en);
897 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
898 session->initial_r2t_en);
899 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
900 session->imm_data_en);
901 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
902 data_seq_inorder, params,
903 session->dataseq_inorder_en);
904 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
905 pdu_seq_inorder, params,
906 session->pdu_inorder_en);
907 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
908 session->max_r2t);
909 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
910 (conn->exp_statsn - 1));
911 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
912 max_recv_data_segment_length, params,
913 conn->max_recv_dlength);
914
915 }
916
917 /**
918 * beiscsi_conn_start - offload of session to chip
919 * @cls_conn: pointer to beiscsi_conn
920 */
beiscsi_conn_start(struct iscsi_cls_conn * cls_conn)921 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
922 {
923 struct iscsi_conn *conn = cls_conn->dd_data;
924 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
925 struct beiscsi_endpoint *beiscsi_ep;
926 struct beiscsi_offload_params params;
927 struct beiscsi_hba *phba;
928
929 phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
930
931 if (!beiscsi_hba_is_online(phba)) {
932 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
933 "BS_%d : HBA in error 0x%lx\n", phba->state);
934 return -EBUSY;
935 }
936 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
937 "BS_%d : In beiscsi_conn_start\n");
938
939 memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
940 beiscsi_ep = beiscsi_conn->ep;
941 if (!beiscsi_ep)
942 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
943 BEISCSI_LOG_CONFIG,
944 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
945
946 beiscsi_conn->login_in_progress = 0;
947 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
948 beiscsi_offload_connection(beiscsi_conn, ¶ms);
949 iscsi_conn_start(cls_conn);
950 return 0;
951 }
952
953 /**
954 * beiscsi_get_cid - Allocate a cid
955 * @phba: The phba instance
956 */
beiscsi_get_cid(struct beiscsi_hba * phba)957 static int beiscsi_get_cid(struct beiscsi_hba *phba)
958 {
959 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
960 unsigned short cid, cid_from_ulp;
961 struct ulp_cid_info *cid_info;
962
963 /* Find the ULP which has more CID available */
964 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
965 BEISCSI_ULP0_AVLBL_CID(phba) : 0;
966 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
967 BEISCSI_ULP1_AVLBL_CID(phba) : 0;
968 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
969 BEISCSI_ULP0 : BEISCSI_ULP1;
970 /**
971 * If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp
972 * is ZERO for both, ULP 1 is returned.
973 * Check if ULP is loaded before getting new CID.
974 */
975 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported))
976 return BE_INVALID_CID;
977
978 cid_info = phba->cid_array_info[cid_from_ulp];
979 cid = cid_info->cid_array[cid_info->cid_alloc];
980 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) {
981 __beiscsi_log(phba, KERN_ERR,
982 "BS_%d : failed to get cid: available %u:%u\n",
983 cid_info->avlbl_cids, cid_info->cid_free);
984 return BE_INVALID_CID;
985 }
986 /* empty the slot */
987 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID;
988 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp))
989 cid_info->cid_alloc = 0;
990 cid_info->avlbl_cids--;
991 return cid;
992 }
993
994 /**
995 * beiscsi_put_cid - Free the cid
996 * @phba: The phba for which the cid is being freed
997 * @cid: The cid to free
998 */
beiscsi_put_cid(struct beiscsi_hba * phba,unsigned short cid)999 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1000 {
1001 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1002 struct hwi_wrb_context *pwrb_context;
1003 struct hwi_controller *phwi_ctrlr;
1004 struct ulp_cid_info *cid_info;
1005 uint16_t cid_post_ulp;
1006
1007 phwi_ctrlr = phba->phwi_ctrlr;
1008 pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1009 cid_post_ulp = pwrb_context->ulp_num;
1010
1011 cid_info = phba->cid_array_info[cid_post_ulp];
1012 /* fill only in empty slot */
1013 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) {
1014 __beiscsi_log(phba, KERN_ERR,
1015 "BS_%d : failed to put cid %u: available %u:%u\n",
1016 cid, cid_info->avlbl_cids, cid_info->cid_free);
1017 return;
1018 }
1019 cid_info->cid_array[cid_info->cid_free++] = cid;
1020 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1021 cid_info->cid_free = 0;
1022 cid_info->avlbl_cids++;
1023 }
1024
1025 /**
1026 * beiscsi_free_ep - free endpoint
1027 * @ep: pointer to iscsi endpoint structure
1028 */
beiscsi_free_ep(struct beiscsi_endpoint * beiscsi_ep)1029 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1030 {
1031 struct beiscsi_hba *phba = beiscsi_ep->phba;
1032 struct beiscsi_conn *beiscsi_conn;
1033
1034 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1035 beiscsi_ep->phba = NULL;
1036 /* clear this to track freeing in beiscsi_ep_disconnect */
1037 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL;
1038
1039 /**
1040 * Check if any connection resource allocated by driver
1041 * is to be freed.This case occurs when target redirection
1042 * or connection retry is done.
1043 **/
1044 if (!beiscsi_ep->conn)
1045 return;
1046
1047 beiscsi_conn = beiscsi_ep->conn;
1048 /**
1049 * Break ep->conn link here so that completions after
1050 * this are ignored.
1051 */
1052 beiscsi_ep->conn = NULL;
1053 if (beiscsi_conn->login_in_progress) {
1054 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1055 beiscsi_conn->task);
1056 beiscsi_conn->login_in_progress = 0;
1057 }
1058 }
1059
1060 /**
1061 * beiscsi_open_conn - Ask FW to open a TCP connection
1062 * @ep: endpoint to be used
1063 * @src_addr: The source IP address
1064 * @dst_addr: The Destination IP address
1065 *
1066 * Asks the FW to open a TCP connection
1067 */
beiscsi_open_conn(struct iscsi_endpoint * ep,struct sockaddr * src_addr,struct sockaddr * dst_addr,int non_blocking)1068 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1069 struct sockaddr *src_addr,
1070 struct sockaddr *dst_addr, int non_blocking)
1071 {
1072 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1073 struct beiscsi_hba *phba = beiscsi_ep->phba;
1074 struct tcp_connect_and_offload_out *ptcpcnct_out;
1075 struct be_dma_mem nonemb_cmd;
1076 unsigned int tag, req_memsize;
1077 int ret = -ENOMEM;
1078
1079 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1080 "BS_%d : In beiscsi_open_conn\n");
1081
1082 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1083 if (beiscsi_ep->ep_cid == BE_INVALID_CID) {
1084 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1085 "BS_%d : No free cid available\n");
1086 return ret;
1087 }
1088
1089 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1090 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1091 beiscsi_ep->ep_cid);
1092
1093 phba->ep_array[BE_GET_CRI_FROM_CID
1094 (beiscsi_ep->ep_cid)] = ep;
1095
1096 beiscsi_ep->cid_vld = 0;
1097
1098 if (is_chip_be2_be3r(phba))
1099 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1100 else
1101 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1102
1103 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1104 req_memsize,
1105 &nonemb_cmd.dma);
1106 if (nonemb_cmd.va == NULL) {
1107
1108 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1109 "BS_%d : Failed to allocate memory for"
1110 " mgmt_open_connection\n");
1111
1112 beiscsi_free_ep(beiscsi_ep);
1113 return -ENOMEM;
1114 }
1115 nonemb_cmd.size = req_memsize;
1116 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1117 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1118 if (!tag) {
1119 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1120 "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1121 beiscsi_ep->ep_cid);
1122
1123 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1124 nonemb_cmd.va, nonemb_cmd.dma);
1125 beiscsi_free_ep(beiscsi_ep);
1126 return -EAGAIN;
1127 }
1128
1129 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1130 if (ret) {
1131 beiscsi_log(phba, KERN_ERR,
1132 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1133 "BS_%d : mgmt_open_connection Failed");
1134
1135 if (ret != -EBUSY)
1136 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1137 nonemb_cmd.va, nonemb_cmd.dma);
1138
1139 beiscsi_free_ep(beiscsi_ep);
1140 return ret;
1141 }
1142
1143 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1144 beiscsi_ep = ep->dd_data;
1145 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1146 beiscsi_ep->cid_vld = 1;
1147 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1148 "BS_%d : mgmt_open_connection Success\n");
1149
1150 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1151 nonemb_cmd.va, nonemb_cmd.dma);
1152 return 0;
1153 }
1154
1155 /**
1156 * beiscsi_ep_connect - Ask chip to create TCP Conn
1157 * @scsi_host: Pointer to scsi_host structure
1158 * @dst_addr: The IP address of Target
1159 * @non_blocking: blocking or non-blocking call
1160 *
1161 * This routines first asks chip to create a connection and then allocates an EP
1162 */
1163 struct iscsi_endpoint *
beiscsi_ep_connect(struct Scsi_Host * shost,struct sockaddr * dst_addr,int non_blocking)1164 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1165 int non_blocking)
1166 {
1167 struct beiscsi_hba *phba;
1168 struct beiscsi_endpoint *beiscsi_ep;
1169 struct iscsi_endpoint *ep;
1170 int ret;
1171
1172 if (!shost) {
1173 ret = -ENXIO;
1174 pr_err("beiscsi_ep_connect shost is NULL\n");
1175 return ERR_PTR(ret);
1176 }
1177
1178 phba = iscsi_host_priv(shost);
1179 if (!beiscsi_hba_is_online(phba)) {
1180 ret = -EIO;
1181 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1182 "BS_%d : HBA in error 0x%lx\n", phba->state);
1183 return ERR_PTR(ret);
1184 }
1185 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) {
1186 ret = -EBUSY;
1187 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1188 "BS_%d : The Adapter Port state is Down!!!\n");
1189 return ERR_PTR(ret);
1190 }
1191
1192 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1193 if (!ep) {
1194 ret = -ENOMEM;
1195 return ERR_PTR(ret);
1196 }
1197
1198 beiscsi_ep = ep->dd_data;
1199 beiscsi_ep->phba = phba;
1200 beiscsi_ep->openiscsi_ep = ep;
1201 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1202 if (ret) {
1203 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1204 "BS_%d : Failed in beiscsi_open_conn\n");
1205 goto free_ep;
1206 }
1207
1208 return ep;
1209
1210 free_ep:
1211 iscsi_destroy_endpoint(ep);
1212 return ERR_PTR(ret);
1213 }
1214
1215 /**
1216 * beiscsi_ep_poll - Poll to see if connection is established
1217 * @ep: endpoint to be used
1218 * @timeout_ms: timeout specified in millisecs
1219 *
1220 * Poll to see if TCP connection established
1221 */
beiscsi_ep_poll(struct iscsi_endpoint * ep,int timeout_ms)1222 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1223 {
1224 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1225
1226 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1227 "BS_%d : In beiscsi_ep_poll\n");
1228
1229 if (beiscsi_ep->cid_vld == 1)
1230 return 1;
1231 else
1232 return 0;
1233 }
1234
1235 /**
1236 * beiscsi_flush_cq()- Flush the CQ created.
1237 * @phba: ptr device priv structure.
1238 *
1239 * Before the connection resource are freed flush
1240 * all the CQ enteries
1241 **/
beiscsi_flush_cq(struct beiscsi_hba * phba)1242 static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1243 {
1244 uint16_t i;
1245 struct be_eq_obj *pbe_eq;
1246 struct hwi_controller *phwi_ctrlr;
1247 struct hwi_context_memory *phwi_context;
1248
1249 phwi_ctrlr = phba->phwi_ctrlr;
1250 phwi_context = phwi_ctrlr->phwi_ctxt;
1251
1252 for (i = 0; i < phba->num_cpus; i++) {
1253 pbe_eq = &phwi_context->be_eq[i];
1254 irq_poll_disable(&pbe_eq->iopoll);
1255 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1256 irq_poll_enable(&pbe_eq->iopoll);
1257 }
1258 }
1259
1260 /**
1261 * beiscsi_conn_close - Invalidate and upload connection
1262 * @ep: The iscsi endpoint
1263 *
1264 * Returns 0 on success, -1 on failure.
1265 */
beiscsi_conn_close(struct beiscsi_endpoint * beiscsi_ep)1266 static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep)
1267 {
1268 struct beiscsi_hba *phba = beiscsi_ep->phba;
1269 unsigned int tag, attempts;
1270 int ret;
1271
1272 /**
1273 * Without successfully invalidating and uploading connection
1274 * driver can't reuse the CID so attempt more than once.
1275 */
1276 attempts = 0;
1277 while (attempts++ < 3) {
1278 tag = beiscsi_invalidate_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 : invalidate conn failed cid %d\n",
1285 beiscsi_ep->ep_cid);
1286 }
1287 }
1288
1289 /* wait for all completions to arrive, then process them */
1290 msleep(250);
1291 /* flush CQ entries */
1292 beiscsi_flush_cq(phba);
1293
1294 if (attempts > 3)
1295 return -1;
1296
1297 attempts = 0;
1298 while (attempts++ < 3) {
1299 tag = beiscsi_upload_cxn(phba, beiscsi_ep);
1300 if (tag) {
1301 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1302 if (!ret)
1303 break;
1304 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1305 "BS_%d : upload conn failed cid %d\n",
1306 beiscsi_ep->ep_cid);
1307 }
1308 }
1309 if (attempts > 3)
1310 return -1;
1311
1312 return 0;
1313 }
1314
1315 /**
1316 * beiscsi_ep_disconnect - Tears down the TCP connection
1317 * @ep: endpoint to be used
1318 *
1319 * Tears down the TCP connection
1320 */
beiscsi_ep_disconnect(struct iscsi_endpoint * ep)1321 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1322 {
1323 struct beiscsi_endpoint *beiscsi_ep;
1324 struct beiscsi_conn *beiscsi_conn;
1325 struct beiscsi_hba *phba;
1326 uint16_t cri_index;
1327
1328 beiscsi_ep = ep->dd_data;
1329 phba = beiscsi_ep->phba;
1330 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1331 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n",
1332 beiscsi_ep->ep_cid);
1333
1334 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
1335 if (!phba->ep_array[cri_index]) {
1336 __beiscsi_log(phba, KERN_ERR,
1337 "BS_%d : ep_array at %u cid %u empty\n",
1338 cri_index,
1339 beiscsi_ep->ep_cid);
1340 return;
1341 }
1342
1343 if (beiscsi_ep->conn) {
1344 beiscsi_conn = beiscsi_ep->conn;
1345 iscsi_suspend_queue(beiscsi_conn->conn);
1346 }
1347
1348 if (!beiscsi_hba_is_online(phba)) {
1349 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1350 "BS_%d : HBA in error 0x%lx\n", phba->state);
1351 } else {
1352 /**
1353 * Make CID available even if close fails.
1354 * If not freed, FW might fail open using the CID.
1355 */
1356 if (beiscsi_conn_close(beiscsi_ep) < 0)
1357 __beiscsi_log(phba, KERN_ERR,
1358 "BS_%d : close conn failed cid %d\n",
1359 beiscsi_ep->ep_cid);
1360 }
1361
1362 beiscsi_free_ep(beiscsi_ep);
1363 if (!phba->conn_table[cri_index])
1364 __beiscsi_log(phba, KERN_ERR,
1365 "BS_%d : conn_table empty at %u: cid %u\n",
1366 cri_index, beiscsi_ep->ep_cid);
1367 phba->conn_table[cri_index] = NULL;
1368 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1369 }
1370
beiscsi_attr_is_visible(int param_type,int param)1371 umode_t beiscsi_attr_is_visible(int param_type, int param)
1372 {
1373 switch (param_type) {
1374 case ISCSI_NET_PARAM:
1375 switch (param) {
1376 case ISCSI_NET_PARAM_IFACE_ENABLE:
1377 case ISCSI_NET_PARAM_IPV4_ADDR:
1378 case ISCSI_NET_PARAM_IPV4_SUBNET:
1379 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1380 case ISCSI_NET_PARAM_IPV4_GW:
1381 case ISCSI_NET_PARAM_IPV6_ADDR:
1382 case ISCSI_NET_PARAM_VLAN_ID:
1383 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1384 case ISCSI_NET_PARAM_VLAN_ENABLED:
1385 return S_IRUGO;
1386 default:
1387 return 0;
1388 }
1389 case ISCSI_HOST_PARAM:
1390 switch (param) {
1391 case ISCSI_HOST_PARAM_HWADDRESS:
1392 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1393 case ISCSI_HOST_PARAM_PORT_STATE:
1394 case ISCSI_HOST_PARAM_PORT_SPEED:
1395 return S_IRUGO;
1396 default:
1397 return 0;
1398 }
1399 case ISCSI_PARAM:
1400 switch (param) {
1401 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1402 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1403 case ISCSI_PARAM_HDRDGST_EN:
1404 case ISCSI_PARAM_DATADGST_EN:
1405 case ISCSI_PARAM_CONN_ADDRESS:
1406 case ISCSI_PARAM_CONN_PORT:
1407 case ISCSI_PARAM_EXP_STATSN:
1408 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1409 case ISCSI_PARAM_PERSISTENT_PORT:
1410 case ISCSI_PARAM_PING_TMO:
1411 case ISCSI_PARAM_RECV_TMO:
1412 case ISCSI_PARAM_INITIAL_R2T_EN:
1413 case ISCSI_PARAM_MAX_R2T:
1414 case ISCSI_PARAM_IMM_DATA_EN:
1415 case ISCSI_PARAM_FIRST_BURST:
1416 case ISCSI_PARAM_MAX_BURST:
1417 case ISCSI_PARAM_PDU_INORDER_EN:
1418 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1419 case ISCSI_PARAM_ERL:
1420 case ISCSI_PARAM_TARGET_NAME:
1421 case ISCSI_PARAM_TPGT:
1422 case ISCSI_PARAM_USERNAME:
1423 case ISCSI_PARAM_PASSWORD:
1424 case ISCSI_PARAM_USERNAME_IN:
1425 case ISCSI_PARAM_PASSWORD_IN:
1426 case ISCSI_PARAM_FAST_ABORT:
1427 case ISCSI_PARAM_ABORT_TMO:
1428 case ISCSI_PARAM_LU_RESET_TMO:
1429 case ISCSI_PARAM_IFACE_NAME:
1430 case ISCSI_PARAM_INITIATOR_NAME:
1431 return S_IRUGO;
1432 default:
1433 return 0;
1434 }
1435 }
1436
1437 return 0;
1438 }
1439