Loading...
1/**
2 * Copyright (C) 2005 - 2011 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@emulex.com)
11 *
12 * Contact Information:
13 * linux-drivers@emulex.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 SE_DEBUG(DBG_LVL_8, "In beiscsi_session_create\n");
54
55 if (!ep) {
56 SE_DEBUG(DBG_LVL_1, "beiscsi_session_create: invalid ep\n");
57 return NULL;
58 }
59 beiscsi_ep = ep->dd_data;
60 phba = beiscsi_ep->phba;
61 shost = phba->shost;
62 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
63 shost_printk(KERN_ERR, shost, "Cannot handle %d cmds."
64 "Max cmds per session supported is %d. Using %d. "
65 "\n", cmds_max,
66 beiscsi_ep->phba->params.wrbs_per_cxn,
67 beiscsi_ep->phba->params.wrbs_per_cxn);
68 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
69 }
70
71 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
72 shost, cmds_max,
73 sizeof(*beiscsi_sess),
74 sizeof(*io_task),
75 initial_cmdsn, ISCSI_MAX_TARGET);
76 if (!cls_session)
77 return NULL;
78 sess = cls_session->dd_data;
79 beiscsi_sess = sess->dd_data;
80 beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool",
81 phba->pcidev,
82 sizeof(struct be_cmd_bhs),
83 64, 0);
84 if (!beiscsi_sess->bhs_pool)
85 goto destroy_sess;
86
87 return cls_session;
88destroy_sess:
89 iscsi_session_teardown(cls_session);
90 return NULL;
91}
92
93/**
94 * beiscsi_session_destroy - destroys iscsi session
95 * @cls_session: pointer to iscsi cls session
96 *
97 * Destroys iSCSI session instance and releases
98 * resources allocated for it.
99 */
100void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
101{
102 struct iscsi_session *sess = cls_session->dd_data;
103 struct beiscsi_session *beiscsi_sess = sess->dd_data;
104
105 SE_DEBUG(DBG_LVL_8, "In beiscsi_session_destroy\n");
106 pci_pool_destroy(beiscsi_sess->bhs_pool);
107 iscsi_session_teardown(cls_session);
108}
109
110/**
111 * beiscsi_conn_create - create an instance of iscsi connection
112 * @cls_session: ptr to iscsi_cls_session
113 * @cid: iscsi cid
114 */
115struct iscsi_cls_conn *
116beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
117{
118 struct beiscsi_hba *phba;
119 struct Scsi_Host *shost;
120 struct iscsi_cls_conn *cls_conn;
121 struct beiscsi_conn *beiscsi_conn;
122 struct iscsi_conn *conn;
123 struct iscsi_session *sess;
124 struct beiscsi_session *beiscsi_sess;
125
126 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_create ,cid"
127 "from iscsi layer=%d\n", cid);
128 shost = iscsi_session_to_shost(cls_session);
129 phba = iscsi_host_priv(shost);
130
131 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
132 if (!cls_conn)
133 return NULL;
134
135 conn = cls_conn->dd_data;
136 beiscsi_conn = conn->dd_data;
137 beiscsi_conn->ep = NULL;
138 beiscsi_conn->phba = phba;
139 beiscsi_conn->conn = conn;
140 sess = cls_session->dd_data;
141 beiscsi_sess = sess->dd_data;
142 beiscsi_conn->beiscsi_sess = beiscsi_sess;
143 return cls_conn;
144}
145
146/**
147 * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
148 * @beiscsi_conn: The pointer to beiscsi_conn structure
149 * @phba: The phba instance
150 * @cid: The cid to free
151 */
152static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
153 struct beiscsi_conn *beiscsi_conn,
154 unsigned int cid)
155{
156 if (phba->conn_table[cid]) {
157 SE_DEBUG(DBG_LVL_1,
158 "Connection table already occupied. Detected clash\n");
159 return -EINVAL;
160 } else {
161 SE_DEBUG(DBG_LVL_8, "phba->conn_table[%d]=%p(beiscsi_conn)\n",
162 cid, beiscsi_conn);
163 phba->conn_table[cid] = beiscsi_conn;
164 }
165 return 0;
166}
167
168/**
169 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
170 * @cls_session: pointer to iscsi cls session
171 * @cls_conn: pointer to iscsi cls conn
172 * @transport_fd: EP handle(64 bit)
173 *
174 * This function binds the TCP Conn with iSCSI Connection and Session.
175 */
176int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
177 struct iscsi_cls_conn *cls_conn,
178 u64 transport_fd, int is_leading)
179{
180 struct iscsi_conn *conn = cls_conn->dd_data;
181 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
182 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
183 struct beiscsi_hba *phba = iscsi_host_priv(shost);
184 struct beiscsi_endpoint *beiscsi_ep;
185 struct iscsi_endpoint *ep;
186
187 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_bind\n");
188 ep = iscsi_lookup_endpoint(transport_fd);
189 if (!ep)
190 return -EINVAL;
191
192 beiscsi_ep = ep->dd_data;
193
194 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
195 return -EINVAL;
196
197 if (beiscsi_ep->phba != phba) {
198 SE_DEBUG(DBG_LVL_8,
199 "beiscsi_ep->hba=%p not equal to phba=%p\n",
200 beiscsi_ep->phba, phba);
201 return -EEXIST;
202 }
203
204 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
205 beiscsi_conn->ep = beiscsi_ep;
206 beiscsi_ep->conn = beiscsi_conn;
207 SE_DEBUG(DBG_LVL_8, "beiscsi_conn=%p conn=%p ep_cid=%d\n",
208 beiscsi_conn, conn, beiscsi_ep->ep_cid);
209 return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
210}
211
212static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
213{
214 if (phba->ipv4_iface)
215 return 0;
216
217 phba->ipv4_iface = iscsi_create_iface(phba->shost,
218 &beiscsi_iscsi_transport,
219 ISCSI_IFACE_TYPE_IPV4,
220 0, 0);
221 if (!phba->ipv4_iface) {
222 shost_printk(KERN_ERR, phba->shost, "Could not "
223 "create default IPv4 address.\n");
224 return -ENODEV;
225 }
226
227 return 0;
228}
229
230static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
231{
232 if (phba->ipv6_iface)
233 return 0;
234
235 phba->ipv6_iface = iscsi_create_iface(phba->shost,
236 &beiscsi_iscsi_transport,
237 ISCSI_IFACE_TYPE_IPV6,
238 0, 0);
239 if (!phba->ipv6_iface) {
240 shost_printk(KERN_ERR, phba->shost, "Could not "
241 "create default IPv6 address.\n");
242 return -ENODEV;
243 }
244
245 return 0;
246}
247
248void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
249{
250 struct be_cmd_get_if_info_resp if_info;
251
252 if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info))
253 beiscsi_create_ipv4_iface(phba);
254
255 if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info))
256 beiscsi_create_ipv6_iface(phba);
257}
258
259void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
260{
261 if (phba->ipv6_iface)
262 iscsi_destroy_iface(phba->ipv6_iface);
263 if (phba->ipv4_iface)
264 iscsi_destroy_iface(phba->ipv4_iface);
265}
266
267static int
268beiscsi_set_static_ip(struct Scsi_Host *shost,
269 struct iscsi_iface_param_info *iface_param,
270 void *data, uint32_t dt_len)
271{
272 struct beiscsi_hba *phba = iscsi_host_priv(shost);
273 struct iscsi_iface_param_info *iface_ip = NULL;
274 struct iscsi_iface_param_info *iface_subnet = NULL;
275 struct nlattr *nla;
276 int ret;
277
278
279 switch (iface_param->param) {
280 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
281 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
282 if (nla)
283 iface_ip = nla_data(nla);
284
285 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
286 if (nla)
287 iface_subnet = nla_data(nla);
288 break;
289 case ISCSI_NET_PARAM_IPV4_ADDR:
290 iface_ip = iface_param;
291 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
292 if (nla)
293 iface_subnet = nla_data(nla);
294 break;
295 case ISCSI_NET_PARAM_IPV4_SUBNET:
296 iface_subnet = iface_param;
297 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
298 if (nla)
299 iface_ip = nla_data(nla);
300 break;
301 default:
302 shost_printk(KERN_ERR, shost, "Unsupported param %d\n",
303 iface_param->param);
304 }
305
306 if (!iface_ip || !iface_subnet) {
307 shost_printk(KERN_ERR, shost, "IP and Subnet Mask required\n");
308 return -EINVAL;
309 }
310
311 ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
312 ISCSI_BOOTPROTO_STATIC);
313
314 return ret;
315}
316
317static int
318beiscsi_set_ipv4(struct Scsi_Host *shost,
319 struct iscsi_iface_param_info *iface_param,
320 void *data, uint32_t dt_len)
321{
322 struct beiscsi_hba *phba = iscsi_host_priv(shost);
323 int ret = 0;
324
325 /* Check the param */
326 switch (iface_param->param) {
327 case ISCSI_NET_PARAM_IPV4_GW:
328 ret = mgmt_set_gateway(phba, iface_param);
329 break;
330 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
331 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
332 ret = mgmt_set_ip(phba, iface_param,
333 NULL, ISCSI_BOOTPROTO_DHCP);
334 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
335 ret = beiscsi_set_static_ip(shost, iface_param,
336 data, dt_len);
337 else
338 shost_printk(KERN_ERR, shost, "Invalid BOOTPROTO: %d\n",
339 iface_param->value[0]);
340 break;
341 case ISCSI_NET_PARAM_IFACE_ENABLE:
342 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
343 ret = beiscsi_create_ipv4_iface(phba);
344 else
345 iscsi_destroy_iface(phba->ipv4_iface);
346 break;
347 case ISCSI_NET_PARAM_IPV4_SUBNET:
348 case ISCSI_NET_PARAM_IPV4_ADDR:
349 ret = beiscsi_set_static_ip(shost, iface_param,
350 data, dt_len);
351 break;
352 default:
353 shost_printk(KERN_ERR, shost, "Param %d not supported\n",
354 iface_param->param);
355 }
356
357 return ret;
358}
359
360static int
361beiscsi_set_ipv6(struct Scsi_Host *shost,
362 struct iscsi_iface_param_info *iface_param,
363 void *data, uint32_t dt_len)
364{
365 struct beiscsi_hba *phba = iscsi_host_priv(shost);
366 int ret = 0;
367
368 switch (iface_param->param) {
369 case ISCSI_NET_PARAM_IFACE_ENABLE:
370 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
371 ret = beiscsi_create_ipv6_iface(phba);
372 else {
373 iscsi_destroy_iface(phba->ipv6_iface);
374 ret = 0;
375 }
376 break;
377 case ISCSI_NET_PARAM_IPV6_ADDR:
378 ret = mgmt_set_ip(phba, iface_param, NULL,
379 ISCSI_BOOTPROTO_STATIC);
380 break;
381 default:
382 shost_printk(KERN_ERR, shost, "Param %d not supported\n",
383 iface_param->param);
384 }
385
386 return ret;
387}
388
389int be2iscsi_iface_set_param(struct Scsi_Host *shost,
390 void *data, uint32_t dt_len)
391{
392 struct iscsi_iface_param_info *iface_param = NULL;
393 struct nlattr *attrib;
394 uint32_t rm_len = dt_len;
395 int ret = 0 ;
396
397 nla_for_each_attr(attrib, data, dt_len, rm_len) {
398 iface_param = nla_data(attrib);
399
400 if (iface_param->param_type != ISCSI_NET_PARAM)
401 continue;
402
403 /*
404 * BE2ISCSI only supports 1 interface
405 */
406 if (iface_param->iface_num) {
407 shost_printk(KERN_ERR, shost, "Invalid iface_num %d."
408 "Only iface_num 0 is supported.\n",
409 iface_param->iface_num);
410 return -EINVAL;
411 }
412
413 switch (iface_param->iface_type) {
414 case ISCSI_IFACE_TYPE_IPV4:
415 ret = beiscsi_set_ipv4(shost, iface_param,
416 data, dt_len);
417 break;
418 case ISCSI_IFACE_TYPE_IPV6:
419 ret = beiscsi_set_ipv6(shost, iface_param,
420 data, dt_len);
421 break;
422 default:
423 shost_printk(KERN_ERR, shost,
424 "Invalid iface type :%d passed\n",
425 iface_param->iface_type);
426 break;
427 }
428
429 if (ret)
430 return ret;
431 }
432
433 return ret;
434}
435
436static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
437 struct iscsi_iface *iface, int param,
438 char *buf)
439{
440 struct be_cmd_get_if_info_resp if_info;
441 int len, ip_type = BE2_IPV4;
442
443 memset(&if_info, 0, sizeof(if_info));
444
445 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
446 ip_type = BE2_IPV6;
447
448 len = mgmt_get_if_info(phba, ip_type, &if_info);
449 if (len)
450 return len;
451
452 switch (param) {
453 case ISCSI_NET_PARAM_IPV4_ADDR:
454 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.addr);
455 break;
456 case ISCSI_NET_PARAM_IPV6_ADDR:
457 len = sprintf(buf, "%pI6\n", &if_info.ip_addr.addr);
458 break;
459 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
460 if (!if_info.dhcp_state)
461 len = sprintf(buf, "static");
462 else
463 len = sprintf(buf, "dhcp");
464 break;
465 case ISCSI_NET_PARAM_IPV4_SUBNET:
466 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.subnet_mask);
467 break;
468 default:
469 WARN_ON(1);
470 }
471
472 return len;
473}
474
475int be2iscsi_iface_get_param(struct iscsi_iface *iface,
476 enum iscsi_param_type param_type,
477 int param, char *buf)
478{
479 struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
480 struct beiscsi_hba *phba = iscsi_host_priv(shost);
481 struct be_cmd_get_def_gateway_resp gateway;
482 int len = -ENOSYS;
483
484 switch (param) {
485 case ISCSI_NET_PARAM_IPV4_ADDR:
486 case ISCSI_NET_PARAM_IPV4_SUBNET:
487 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
488 case ISCSI_NET_PARAM_IPV6_ADDR:
489 len = be2iscsi_get_if_param(phba, iface, param, buf);
490 break;
491 case ISCSI_NET_PARAM_IFACE_ENABLE:
492 len = sprintf(buf, "enabled");
493 break;
494 case ISCSI_NET_PARAM_IPV4_GW:
495 memset(&gateway, 0, sizeof(gateway));
496 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
497 if (!len)
498 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
499 break;
500 default:
501 len = -ENOSYS;
502 }
503
504 return len;
505}
506
507/**
508 * beiscsi_ep_get_param - get the iscsi parameter
509 * @ep: pointer to iscsi ep
510 * @param: parameter type identifier
511 * @buf: buffer pointer
512 *
513 * returns iscsi parameter
514 */
515int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
516 enum iscsi_param param, char *buf)
517{
518 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
519 int len = 0;
520
521 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_get_param, param= %d\n", param);
522
523 switch (param) {
524 case ISCSI_PARAM_CONN_PORT:
525 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
526 break;
527 case ISCSI_PARAM_CONN_ADDRESS:
528 if (beiscsi_ep->ip_type == BE2_IPV4)
529 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
530 else
531 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
532 break;
533 default:
534 return -ENOSYS;
535 }
536 return len;
537}
538
539int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
540 enum iscsi_param param, char *buf, int buflen)
541{
542 struct iscsi_conn *conn = cls_conn->dd_data;
543 struct iscsi_session *session = conn->session;
544 int ret;
545
546 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_set_param, param= %d\n", param);
547 ret = iscsi_set_param(cls_conn, param, buf, buflen);
548 if (ret)
549 return ret;
550 /*
551 * If userspace tried to set the value to higher than we can
552 * support override here.
553 */
554 switch (param) {
555 case ISCSI_PARAM_FIRST_BURST:
556 if (session->first_burst > 8192)
557 session->first_burst = 8192;
558 break;
559 case ISCSI_PARAM_MAX_RECV_DLENGTH:
560 if (conn->max_recv_dlength > 65536)
561 conn->max_recv_dlength = 65536;
562 break;
563 case ISCSI_PARAM_MAX_BURST:
564 if (session->max_burst > 262144)
565 session->max_burst = 262144;
566 break;
567 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
568 if ((conn->max_xmit_dlength > 65536) ||
569 (conn->max_xmit_dlength == 0))
570 conn->max_xmit_dlength = 65536;
571 default:
572 return 0;
573 }
574
575 return 0;
576}
577
578/**
579 * beiscsi_get_initname - Read Initiator Name from flash
580 * @buf: buffer bointer
581 * @phba: The device priv structure instance
582 *
583 * returns number of bytes
584 */
585static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
586{
587 int rc;
588 unsigned int tag, wrb_num;
589 unsigned short status, extd_status;
590 struct be_mcc_wrb *wrb;
591 struct be_cmd_hba_name *resp;
592 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
593
594 tag = be_cmd_get_initname(phba);
595 if (!tag) {
596 SE_DEBUG(DBG_LVL_1, "Getting Initiator Name Failed\n");
597 return -EBUSY;
598 } else
599 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
600 phba->ctrl.mcc_numtag[tag]);
601
602 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
603 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
604 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
605
606 if (status || extd_status) {
607 SE_DEBUG(DBG_LVL_1, "MailBox Command Failed with "
608 "status = %d extd_status = %d\n",
609 status, extd_status);
610 free_mcc_tag(&phba->ctrl, tag);
611 return -EAGAIN;
612 }
613 wrb = queue_get_wrb(mccq, wrb_num);
614 free_mcc_tag(&phba->ctrl, tag);
615 resp = embedded_payload(wrb);
616 rc = sprintf(buf, "%s\n", resp->initiator_name);
617 return rc;
618}
619
620/**
621 * beiscsi_get_port_state - Get the Port State
622 * @shost : pointer to scsi_host structure
623 *
624 * returns number of bytes
625 */
626static void beiscsi_get_port_state(struct Scsi_Host *shost)
627{
628 struct beiscsi_hba *phba = iscsi_host_priv(shost);
629 struct iscsi_cls_host *ihost = shost->shost_data;
630
631 ihost->port_state = (phba->state == BE_ADAPTER_UP) ?
632 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
633}
634
635/**
636 * beiscsi_get_port_speed - Get the Port Speed from Adapter
637 * @shost : pointer to scsi_host structure
638 *
639 * returns Success/Failure
640 */
641static int beiscsi_get_port_speed(struct Scsi_Host *shost)
642{
643 unsigned int tag, wrb_num;
644 unsigned short status, extd_status;
645 struct be_mcc_wrb *wrb;
646 struct be_cmd_ntwk_link_status_resp *resp;
647 struct beiscsi_hba *phba = iscsi_host_priv(shost);
648 struct iscsi_cls_host *ihost = shost->shost_data;
649 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
650
651 tag = be_cmd_get_port_speed(phba);
652 if (!tag) {
653 SE_DEBUG(DBG_LVL_1, "Getting Port Speed Failed\n");
654 return -EBUSY;
655 } else
656 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
657 phba->ctrl.mcc_numtag[tag]);
658
659 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
660 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
661 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
662
663 if (status || extd_status) {
664 SE_DEBUG(DBG_LVL_1, "MailBox Command Failed with "
665 "status = %d extd_status = %d\n",
666 status, extd_status);
667 free_mcc_tag(&phba->ctrl, tag);
668 return -EAGAIN;
669 }
670 wrb = queue_get_wrb(mccq, wrb_num);
671 free_mcc_tag(&phba->ctrl, tag);
672 resp = embedded_payload(wrb);
673
674 switch (resp->mac_speed) {
675 case BE2ISCSI_LINK_SPEED_10MBPS:
676 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
677 break;
678 case BE2ISCSI_LINK_SPEED_100MBPS:
679 ihost->port_speed = BE2ISCSI_LINK_SPEED_100MBPS;
680 break;
681 case BE2ISCSI_LINK_SPEED_1GBPS:
682 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
683 break;
684 case BE2ISCSI_LINK_SPEED_10GBPS:
685 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
686 break;
687 default:
688 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
689 }
690 return 0;
691}
692
693/**
694 * beiscsi_get_host_param - get the iscsi parameter
695 * @shost: pointer to scsi_host structure
696 * @param: parameter type identifier
697 * @buf: buffer pointer
698 *
699 * returns host parameter
700 */
701int beiscsi_get_host_param(struct Scsi_Host *shost,
702 enum iscsi_host_param param, char *buf)
703{
704 struct beiscsi_hba *phba = iscsi_host_priv(shost);
705 int status = 0;
706
707 SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param);
708 switch (param) {
709 case ISCSI_HOST_PARAM_HWADDRESS:
710 status = beiscsi_get_macaddr(buf, phba);
711 if (status < 0) {
712 SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
713 return status;
714 }
715 break;
716 case ISCSI_HOST_PARAM_INITIATOR_NAME:
717 status = beiscsi_get_initname(buf, phba);
718 if (status < 0) {
719 SE_DEBUG(DBG_LVL_1,
720 "Retreiving Initiator Name Failed\n");
721 return status;
722 }
723 break;
724 case ISCSI_HOST_PARAM_PORT_STATE:
725 beiscsi_get_port_state(shost);
726 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
727 break;
728 case ISCSI_HOST_PARAM_PORT_SPEED:
729 status = beiscsi_get_port_speed(shost);
730 if (status) {
731 SE_DEBUG(DBG_LVL_1,
732 "Retreiving Port Speed Failed\n");
733 return status;
734 }
735 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
736 break;
737 default:
738 return iscsi_host_get_param(shost, param, buf);
739 }
740 return status;
741}
742
743int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
744{
745 struct be_cmd_get_nic_conf_resp resp;
746 int rc;
747
748 if (strlen(phba->mac_address))
749 return strlcpy(buf, phba->mac_address, PAGE_SIZE);
750
751 memset(&resp, 0, sizeof(resp));
752 rc = mgmt_get_nic_conf(phba, &resp);
753 if (rc)
754 return rc;
755
756 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
757 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
758}
759
760/**
761 * beiscsi_conn_get_stats - get the iscsi stats
762 * @cls_conn: pointer to iscsi cls conn
763 * @stats: pointer to iscsi_stats structure
764 *
765 * returns iscsi stats
766 */
767void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
768 struct iscsi_stats *stats)
769{
770 struct iscsi_conn *conn = cls_conn->dd_data;
771
772 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_stats\n");
773 stats->txdata_octets = conn->txdata_octets;
774 stats->rxdata_octets = conn->rxdata_octets;
775 stats->dataout_pdus = conn->dataout_pdus_cnt;
776 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
777 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
778 stats->datain_pdus = conn->datain_pdus_cnt;
779 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
780 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
781 stats->r2t_pdus = conn->r2t_pdus_cnt;
782 stats->digest_err = 0;
783 stats->timeout_err = 0;
784 stats->custom_length = 0;
785 strcpy(stats->custom[0].desc, "eh_abort_cnt");
786 stats->custom[0].value = conn->eh_abort_cnt;
787}
788
789/**
790 * beiscsi_set_params_for_offld - get the parameters for offload
791 * @beiscsi_conn: pointer to beiscsi_conn
792 * @params: pointer to offload_params structure
793 */
794static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
795 struct beiscsi_offload_params *params)
796{
797 struct iscsi_conn *conn = beiscsi_conn->conn;
798 struct iscsi_session *session = conn->session;
799
800 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
801 params, session->max_burst);
802 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
803 max_send_data_segment_length, params,
804 conn->max_xmit_dlength);
805 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
806 params, session->first_burst);
807 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
808 session->erl);
809 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
810 conn->datadgst_en);
811 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
812 conn->hdrdgst_en);
813 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
814 session->initial_r2t_en);
815 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
816 session->imm_data_en);
817 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
818 (conn->exp_statsn - 1));
819}
820
821/**
822 * beiscsi_conn_start - offload of session to chip
823 * @cls_conn: pointer to beiscsi_conn
824 */
825int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
826{
827 struct iscsi_conn *conn = cls_conn->dd_data;
828 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
829 struct beiscsi_endpoint *beiscsi_ep;
830 struct beiscsi_offload_params params;
831
832 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_start\n");
833 memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
834 beiscsi_ep = beiscsi_conn->ep;
835 if (!beiscsi_ep)
836 SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_start , no beiscsi_ep\n");
837
838 beiscsi_conn->login_in_progress = 0;
839 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
840 beiscsi_offload_connection(beiscsi_conn, ¶ms);
841 iscsi_conn_start(cls_conn);
842 return 0;
843}
844
845/**
846 * beiscsi_get_cid - Allocate a cid
847 * @phba: The phba instance
848 */
849static int beiscsi_get_cid(struct beiscsi_hba *phba)
850{
851 unsigned short cid = 0xFFFF;
852
853 if (!phba->avlbl_cids)
854 return cid;
855
856 cid = phba->cid_array[phba->cid_alloc++];
857 if (phba->cid_alloc == phba->params.cxns_per_ctrl)
858 phba->cid_alloc = 0;
859 phba->avlbl_cids--;
860 return cid;
861}
862
863/**
864 * beiscsi_put_cid - Free the cid
865 * @phba: The phba for which the cid is being freed
866 * @cid: The cid to free
867 */
868static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
869{
870 phba->avlbl_cids++;
871 phba->cid_array[phba->cid_free++] = cid;
872 if (phba->cid_free == phba->params.cxns_per_ctrl)
873 phba->cid_free = 0;
874}
875
876/**
877 * beiscsi_free_ep - free endpoint
878 * @ep: pointer to iscsi endpoint structure
879 */
880static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
881{
882 struct beiscsi_hba *phba = beiscsi_ep->phba;
883
884 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
885 beiscsi_ep->phba = NULL;
886}
887
888/**
889 * beiscsi_open_conn - Ask FW to open a TCP connection
890 * @ep: endpoint to be used
891 * @src_addr: The source IP address
892 * @dst_addr: The Destination IP address
893 *
894 * Asks the FW to open a TCP connection
895 */
896static int beiscsi_open_conn(struct iscsi_endpoint *ep,
897 struct sockaddr *src_addr,
898 struct sockaddr *dst_addr, int non_blocking)
899{
900 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
901 struct beiscsi_hba *phba = beiscsi_ep->phba;
902 struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
903 struct be_mcc_wrb *wrb;
904 struct tcp_connect_and_offload_out *ptcpcnct_out;
905 unsigned short status, extd_status;
906 struct be_dma_mem nonemb_cmd;
907 unsigned int tag, wrb_num;
908 int ret = -ENOMEM;
909
910 SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n");
911 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
912 if (beiscsi_ep->ep_cid == 0xFFFF) {
913 SE_DEBUG(DBG_LVL_1, "No free cid available\n");
914 return ret;
915 }
916 SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d\n",
917 beiscsi_ep->ep_cid);
918 phba->ep_array[beiscsi_ep->ep_cid -
919 phba->fw_config.iscsi_cid_start] = ep;
920 if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start +
921 phba->params.cxns_per_ctrl * 2)) {
922 SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n");
923 goto free_ep;
924 }
925
926 beiscsi_ep->cid_vld = 0;
927 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
928 sizeof(struct tcp_connect_and_offload_in),
929 &nonemb_cmd.dma);
930 if (nonemb_cmd.va == NULL) {
931 SE_DEBUG(DBG_LVL_1,
932 "Failed to allocate memory for mgmt_open_connection"
933 "\n");
934 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
935 return -ENOMEM;
936 }
937 nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
938 memset(nonemb_cmd.va, 0, nonemb_cmd.size);
939 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
940 if (!tag) {
941 SE_DEBUG(DBG_LVL_1,
942 "mgmt_open_connection Failed for cid=%d\n",
943 beiscsi_ep->ep_cid);
944 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
945 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
946 nonemb_cmd.va, nonemb_cmd.dma);
947 return -EAGAIN;
948 } else {
949 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
950 phba->ctrl.mcc_numtag[tag]);
951 }
952 wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
953 extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
954 status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
955 if (status || extd_status) {
956 SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed"
957 " status = %d extd_status = %d\n",
958 status, extd_status);
959 free_mcc_tag(&phba->ctrl, tag);
960 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
961 nonemb_cmd.va, nonemb_cmd.dma);
962 goto free_ep;
963 } else {
964 wrb = queue_get_wrb(mccq, wrb_num);
965 free_mcc_tag(&phba->ctrl, tag);
966
967 ptcpcnct_out = embedded_payload(wrb);
968 beiscsi_ep = ep->dd_data;
969 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
970 beiscsi_ep->cid_vld = 1;
971 SE_DEBUG(DBG_LVL_8, "mgmt_open_connection Success\n");
972 }
973 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
974 nonemb_cmd.va, nonemb_cmd.dma);
975 return 0;
976
977free_ep:
978 beiscsi_free_ep(beiscsi_ep);
979 return -EBUSY;
980}
981
982/**
983 * beiscsi_ep_connect - Ask chip to create TCP Conn
984 * @scsi_host: Pointer to scsi_host structure
985 * @dst_addr: The IP address of Target
986 * @non_blocking: blocking or non-blocking call
987 *
988 * This routines first asks chip to create a connection and then allocates an EP
989 */
990struct iscsi_endpoint *
991beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
992 int non_blocking)
993{
994 struct beiscsi_hba *phba;
995 struct beiscsi_endpoint *beiscsi_ep;
996 struct iscsi_endpoint *ep;
997 int ret;
998
999 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_connect\n");
1000 if (shost)
1001 phba = iscsi_host_priv(shost);
1002 else {
1003 ret = -ENXIO;
1004 SE_DEBUG(DBG_LVL_1, "shost is NULL\n");
1005 return ERR_PTR(ret);
1006 }
1007
1008 if (phba->state != BE_ADAPTER_UP) {
1009 ret = -EBUSY;
1010 SE_DEBUG(DBG_LVL_1, "The Adapter state is Not UP\n");
1011 return ERR_PTR(ret);
1012 }
1013
1014 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1015 if (!ep) {
1016 ret = -ENOMEM;
1017 return ERR_PTR(ret);
1018 }
1019
1020 beiscsi_ep = ep->dd_data;
1021 beiscsi_ep->phba = phba;
1022 beiscsi_ep->openiscsi_ep = ep;
1023 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1024 if (ret) {
1025 SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn\n");
1026 goto free_ep;
1027 }
1028
1029 return ep;
1030
1031free_ep:
1032 iscsi_destroy_endpoint(ep);
1033 return ERR_PTR(ret);
1034}
1035
1036/**
1037 * beiscsi_ep_poll - Poll to see if connection is established
1038 * @ep: endpoint to be used
1039 * @timeout_ms: timeout specified in millisecs
1040 *
1041 * Poll to see if TCP connection established
1042 */
1043int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1044{
1045 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1046
1047 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_poll\n");
1048 if (beiscsi_ep->cid_vld == 1)
1049 return 1;
1050 else
1051 return 0;
1052}
1053
1054/**
1055 * beiscsi_close_conn - Upload the connection
1056 * @ep: The iscsi endpoint
1057 * @flag: The type of connection closure
1058 */
1059static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
1060{
1061 int ret = 0;
1062 unsigned int tag;
1063 struct beiscsi_hba *phba = beiscsi_ep->phba;
1064
1065 tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1066 if (!tag) {
1067 SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x\n",
1068 beiscsi_ep->ep_cid);
1069 ret = -EAGAIN;
1070 } else {
1071 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1072 phba->ctrl.mcc_numtag[tag]);
1073 free_mcc_tag(&phba->ctrl, tag);
1074 }
1075 return ret;
1076}
1077
1078/**
1079 * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1080 * @phba: The phba instance
1081 * @cid: The cid to free
1082 */
1083static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1084 unsigned int cid)
1085{
1086 if (phba->conn_table[cid])
1087 phba->conn_table[cid] = NULL;
1088 else {
1089 SE_DEBUG(DBG_LVL_8, "Connection table Not occupied.\n");
1090 return -EINVAL;
1091 }
1092 return 0;
1093}
1094
1095/**
1096 * beiscsi_ep_disconnect - Tears down the TCP connection
1097 * @ep: endpoint to be used
1098 *
1099 * Tears down the TCP connection
1100 */
1101void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1102{
1103 struct beiscsi_conn *beiscsi_conn;
1104 struct beiscsi_endpoint *beiscsi_ep;
1105 struct beiscsi_hba *phba;
1106 unsigned int tag;
1107 unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1108
1109 beiscsi_ep = ep->dd_data;
1110 phba = beiscsi_ep->phba;
1111 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect for ep_cid = %d\n",
1112 beiscsi_ep->ep_cid);
1113
1114 if (!beiscsi_ep->conn) {
1115 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect, no "
1116 "beiscsi_ep\n");
1117 return;
1118 }
1119 beiscsi_conn = beiscsi_ep->conn;
1120 iscsi_suspend_queue(beiscsi_conn->conn);
1121
1122 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect ep_cid = %d\n",
1123 beiscsi_ep->ep_cid);
1124
1125 tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1126 beiscsi_ep->ep_cid, 1,
1127 savecfg_flag);
1128 if (!tag) {
1129 SE_DEBUG(DBG_LVL_1,
1130 "mgmt_invalidate_connection Failed for cid=%d\n",
1131 beiscsi_ep->ep_cid);
1132 } else {
1133 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1134 phba->ctrl.mcc_numtag[tag]);
1135 free_mcc_tag(&phba->ctrl, tag);
1136 }
1137
1138 beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL);
1139 beiscsi_free_ep(beiscsi_ep);
1140 beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1141 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1142}
1143
1144umode_t be2iscsi_attr_is_visible(int param_type, int param)
1145{
1146 switch (param_type) {
1147 case ISCSI_NET_PARAM:
1148 switch (param) {
1149 case ISCSI_NET_PARAM_IFACE_ENABLE:
1150 case ISCSI_NET_PARAM_IPV4_ADDR:
1151 case ISCSI_NET_PARAM_IPV4_SUBNET:
1152 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1153 case ISCSI_NET_PARAM_IPV4_GW:
1154 case ISCSI_NET_PARAM_IPV6_ADDR:
1155 return S_IRUGO;
1156 default:
1157 return 0;
1158 }
1159 case ISCSI_HOST_PARAM:
1160 switch (param) {
1161 case ISCSI_HOST_PARAM_HWADDRESS:
1162 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1163 case ISCSI_HOST_PARAM_PORT_STATE:
1164 case ISCSI_HOST_PARAM_PORT_SPEED:
1165 return S_IRUGO;
1166 default:
1167 return 0;
1168 }
1169 case ISCSI_PARAM:
1170 switch (param) {
1171 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1172 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1173 case ISCSI_PARAM_HDRDGST_EN:
1174 case ISCSI_PARAM_DATADGST_EN:
1175 case ISCSI_PARAM_CONN_ADDRESS:
1176 case ISCSI_PARAM_CONN_PORT:
1177 case ISCSI_PARAM_EXP_STATSN:
1178 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1179 case ISCSI_PARAM_PERSISTENT_PORT:
1180 case ISCSI_PARAM_PING_TMO:
1181 case ISCSI_PARAM_RECV_TMO:
1182 case ISCSI_PARAM_INITIAL_R2T_EN:
1183 case ISCSI_PARAM_MAX_R2T:
1184 case ISCSI_PARAM_IMM_DATA_EN:
1185 case ISCSI_PARAM_FIRST_BURST:
1186 case ISCSI_PARAM_MAX_BURST:
1187 case ISCSI_PARAM_PDU_INORDER_EN:
1188 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1189 case ISCSI_PARAM_ERL:
1190 case ISCSI_PARAM_TARGET_NAME:
1191 case ISCSI_PARAM_TPGT:
1192 case ISCSI_PARAM_USERNAME:
1193 case ISCSI_PARAM_PASSWORD:
1194 case ISCSI_PARAM_USERNAME_IN:
1195 case ISCSI_PARAM_PASSWORD_IN:
1196 case ISCSI_PARAM_FAST_ABORT:
1197 case ISCSI_PARAM_ABORT_TMO:
1198 case ISCSI_PARAM_LU_RESET_TMO:
1199 case ISCSI_PARAM_IFACE_NAME:
1200 case ISCSI_PARAM_INITIATOR_NAME:
1201 return S_IRUGO;
1202 default:
1203 return 0;
1204 }
1205 }
1206
1207 return 0;
1208}