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[SCSI] be2iscsi: No requirement for endianess change for data_count
[linux-2.6-block.git] / drivers / scsi / be2iscsi / be_iscsi.c
CommitLineData
6733b39a
JK		 1/**
2 * Copyright (C) 2005 - 2009 ServerEngines
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 (jayamohank@serverengines.com)
11 *
12 * Contact Information:
13 * linux-drivers@serverengines.com
14 *
15 * ServerEngines
16 * 209 N. Fair Oaks Ave
17 * Sunnyvale, CA 94085
18 *
19 */
20
21#include <scsi/libiscsi.h>
22#include <scsi/scsi_transport_iscsi.h>
23#include <scsi/scsi_transport.h>
24#include <scsi/scsi_cmnd.h>
25#include <scsi/scsi_device.h>
26#include <scsi/scsi_host.h>
27#include <scsi/scsi.h>
28
29#include "be_iscsi.h"
30
31extern struct iscsi_transport beiscsi_iscsi_transport;
32
33/**
34 * beiscsi_session_create - creates a new iscsi session
35 * @cmds_max: max commands supported
36 * @qdepth: max queue depth supported
37 * @initial_cmdsn: initial iscsi CMDSN
38 */
39struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
40 u16 cmds_max,
41 u16 qdepth,
42 u32 initial_cmdsn)
43{
44 struct Scsi_Host *shost;
45 struct beiscsi_endpoint *beiscsi_ep;
46 struct iscsi_cls_session *cls_session;
6733b39a 47 struct beiscsi_hba *phba;
b8b9e1b8
JK		 48 struct iscsi_session *sess;
49 struct beiscsi_session *beiscsi_sess;
6733b39a 50 struct beiscsi_io_task *io_task;
6733b39a
JK		 51
52 SE_DEBUG(DBG_LVL_8, "In beiscsi_session_create\n");
53
54 if (!ep) {
55 SE_DEBUG(DBG_LVL_1, "beiscsi_session_create: invalid ep \n");
56 return NULL;
57 }
58 beiscsi_ep = ep->dd_data;
59 phba = beiscsi_ep->phba;
60 shost = phba->shost;
61 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
62 shost_printk(KERN_ERR, shost, "Cannot handle %d cmds."
63 "Max cmds per session supported is %d. Using %d. "
64 "\n", cmds_max,
65 beiscsi_ep->phba->params.wrbs_per_cxn,
66 beiscsi_ep->phba->params.wrbs_per_cxn);
67 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
68 }
69
bfead3b2
JK		 70 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
71 shost, cmds_max,
72 sizeof(*beiscsi_sess),
73 sizeof(*io_task),
74 initial_cmdsn, ISCSI_MAX_TARGET);
6733b39a
JK		 75 if (!cls_session)
76 return NULL;
77 sess = cls_session->dd_data;
2afc95bf
JK		 78 beiscsi_sess = sess->dd_data;
79 beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool",
80 phba->pcidev,
81 sizeof(struct be_cmd_bhs),
82 64, 0);
83 if (!beiscsi_sess->bhs_pool)
84 goto destroy_sess;
6733b39a 85
6733b39a 86 return cls_session;
2afc95bf
JK		 87destroy_sess:
88 iscsi_session_teardown(cls_session);
89 return NULL;
6733b39a
JK		 90}
91
92/**
93 * beiscsi_session_destroy - destroys iscsi session
94 * @cls_session: pointer to iscsi cls session
95 *
96 * Destroys iSCSI session instance and releases
97 * resources allocated for it.
98 */
99void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
100{
6733b39a 101 struct iscsi_session *sess = cls_session->dd_data;
2afc95bf 102 struct beiscsi_session *beiscsi_sess = sess->dd_data;
6733b39a 103
2afc95bf 104 pci_pool_destroy(beiscsi_sess->bhs_pool);
6733b39a
JK		 105 iscsi_session_teardown(cls_session);
106}
107
108/**
109 * beiscsi_conn_create - create an instance of iscsi connection
110 * @cls_session: ptr to iscsi_cls_session
111 * @cid: iscsi cid
112 */
113struct iscsi_cls_conn *
114beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
115{
116 struct beiscsi_hba *phba;
117 struct Scsi_Host *shost;
118 struct iscsi_cls_conn *cls_conn;
119 struct beiscsi_conn *beiscsi_conn;
120 struct iscsi_conn *conn;
2afc95bf
JK		 121 struct iscsi_session *sess;
122 struct beiscsi_session *beiscsi_sess;
6733b39a
JK		 123
124 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_create ,cid"
125 "from iscsi layer=%d\n", cid);
126 shost = iscsi_session_to_shost(cls_session);
127 phba = iscsi_host_priv(shost);
128
129 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
130 if (!cls_conn)
131 return NULL;
132
133 conn = cls_conn->dd_data;
134 beiscsi_conn = conn->dd_data;
135 beiscsi_conn->ep = NULL;
136 beiscsi_conn->phba = phba;
137 beiscsi_conn->conn = conn;
2afc95bf
JK		 138 sess = cls_session->dd_data;
139 beiscsi_sess = sess->dd_data;
140 beiscsi_conn->beiscsi_sess = beiscsi_sess;
6733b39a
JK		 141 return cls_conn;
142}
143
144/**
145 * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
146 * @beiscsi_conn: The pointer to beiscsi_conn structure
147 * @phba: The phba instance
148 * @cid: The cid to free
149 */
150static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
151 struct beiscsi_conn *beiscsi_conn,
152 unsigned int cid)
153{
154 if (phba->conn_table[cid]) {
155 SE_DEBUG(DBG_LVL_1,
156 "Connection table already occupied. Detected clash\n");
157 return -EINVAL;
158 } else {
159 SE_DEBUG(DBG_LVL_8, "phba->conn_table[%d]=%p(beiscsi_conn) \n",
160 cid, beiscsi_conn);
161 phba->conn_table[cid] = beiscsi_conn;
162 }
163 return 0;
164}
165
166/**
167 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
168 * @cls_session: pointer to iscsi cls session
169 * @cls_conn: pointer to iscsi cls conn
170 * @transport_fd: EP handle(64 bit)
171 *
172 * This function binds the TCP Conn with iSCSI Connection and Session.
173 */
174int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
175 struct iscsi_cls_conn *cls_conn,
176 u64 transport_fd, int is_leading)
177{
178 struct iscsi_conn *conn = cls_conn->dd_data;
179 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
180 struct Scsi_Host *shost =
181 (struct Scsi_Host *)iscsi_session_to_shost(cls_session);
182 struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
183 struct beiscsi_endpoint *beiscsi_ep;
184 struct iscsi_endpoint *ep;
185
186 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_bind\n");
187 ep = iscsi_lookup_endpoint(transport_fd);
188 if (!ep)
189 return -EINVAL;
190
191 beiscsi_ep = ep->dd_data;
192
193 if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
194 return -EINVAL;
195
196 if (beiscsi_ep->phba != phba) {
197 SE_DEBUG(DBG_LVL_8,
198 "beiscsi_ep->hba=%p not equal to phba=%p \n",
199 beiscsi_ep->phba, phba);
200 return -EEXIST;
201 }
202
203 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
204 beiscsi_conn->ep = beiscsi_ep;
205 beiscsi_ep->conn = beiscsi_conn;
206 SE_DEBUG(DBG_LVL_8, "beiscsi_conn=%p conn=%p ep_cid=%d \n",
207 beiscsi_conn, conn, beiscsi_ep->ep_cid);
208 return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
209}
210
211/**
212 * beiscsi_conn_get_param - get the iscsi parameter
213 * @cls_conn: pointer to iscsi cls conn
214 * @param: parameter type identifier
215 * @buf: buffer pointer
216 *
217 * returns iscsi parameter
218 */
219int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
220 enum iscsi_param param, char *buf)
221{
222 struct beiscsi_endpoint *beiscsi_ep;
223 struct iscsi_conn *conn = cls_conn->dd_data;
224 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
225 int len = 0;
226
227 beiscsi_ep = beiscsi_conn->ep;
228 if (!beiscsi_ep) {
229 SE_DEBUG(DBG_LVL_1,
230 "In beiscsi_conn_get_param , no beiscsi_ep\n");
231 return -1;
232 }
233
234 switch (param) {
235 case ISCSI_PARAM_CONN_PORT:
236 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
237 break;
238 case ISCSI_PARAM_CONN_ADDRESS:
239 if (beiscsi_ep->ip_type == BE2_IPV4)
240 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
241 else
242 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
243 break;
244 default:
245 return iscsi_conn_get_param(cls_conn, param, buf);
246 }
247 return len;
248}
249
250int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
251 enum iscsi_param param, char *buf, int buflen)
252{
253 struct iscsi_conn *conn = cls_conn->dd_data;
254 struct iscsi_session *session = conn->session;
255 int ret;
256
257 ret = iscsi_set_param(cls_conn, param, buf, buflen);
258 if (ret)
259 return ret;
260 /*
261 * If userspace tried to set the value to higher than we can
262 * support override here.
263 */
264 switch (param) {
265 case ISCSI_PARAM_FIRST_BURST:
266 if (session->first_burst > 8192)
267 session->first_burst = 8192;
268 break;
269 case ISCSI_PARAM_MAX_RECV_DLENGTH:
270 if (conn->max_recv_dlength > 65536)
271 conn->max_recv_dlength = 65536;
272 break;
273 case ISCSI_PARAM_MAX_BURST:
274 if (session->first_burst > 262144)
275 session->first_burst = 262144;
276 break;
277 default:
278 return 0;
279 }
280
281 return 0;
282}
283
284/**
285 * beiscsi_get_host_param - get the iscsi parameter
286 * @shost: pointer to scsi_host structure
287 * @param: parameter type identifier
288 * @buf: buffer pointer
289 *
290 * returns host parameter
291 */
292int beiscsi_get_host_param(struct Scsi_Host *shost,
293 enum iscsi_host_param param, char *buf)
294{
295 struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
296 int len = 0;
297
298 switch (param) {
299 case ISCSI_HOST_PARAM_HWADDRESS:
bfead3b2 300 be_cmd_get_mac_addr(phba, phba->mac_address);
6733b39a
JK		 301 len = sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
302 break;
303 default:
304 return iscsi_host_get_param(shost, param, buf);
305 }
306 return len;
307}
308
309/**
310 * beiscsi_conn_get_stats - get the iscsi stats
311 * @cls_conn: pointer to iscsi cls conn
312 * @stats: pointer to iscsi_stats structure
313 *
314 * returns iscsi stats
315 */
316void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
317 struct iscsi_stats *stats)
318{
319 struct iscsi_conn *conn = cls_conn->dd_data;
320
321 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_stats\n");
322 stats->txdata_octets = conn->txdata_octets;
323 stats->rxdata_octets = conn->rxdata_octets;
324 stats->dataout_pdus = conn->dataout_pdus_cnt;
325 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
326 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
327 stats->datain_pdus = conn->datain_pdus_cnt;
328 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
329 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
330 stats->r2t_pdus = conn->r2t_pdus_cnt;
331 stats->digest_err = 0;
332 stats->timeout_err = 0;
333 stats->custom_length = 0;
334 strcpy(stats->custom[0].desc, "eh_abort_cnt");
335 stats->custom[0].value = conn->eh_abort_cnt;
336}
337
338/**
339 * beiscsi_set_params_for_offld - get the parameters for offload
340 * @beiscsi_conn: pointer to beiscsi_conn
341 * @params: pointer to offload_params structure
342 */
343static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
344 struct beiscsi_offload_params *params)
345{
346 struct iscsi_conn *conn = beiscsi_conn->conn;
347 struct iscsi_session *session = conn->session;
348
349 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
350 params, session->max_burst);
351 AMAP_SET_BITS(struct amap_beiscsi_offload_params,
352 max_send_data_segment_length, params,
353 conn->max_xmit_dlength);
354 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
355 params, session->first_burst);
356 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
357 session->erl);
358 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
359 conn->datadgst_en);
360 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
361 conn->hdrdgst_en);
362 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
363 session->initial_r2t_en);
364 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
365 session->imm_data_en);
366 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
367 (conn->exp_statsn - 1));
368}
369
370/**
371 * beiscsi_conn_start - offload of session to chip
372 * @cls_conn: pointer to beiscsi_conn
373 */
374int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
375{
376 struct iscsi_conn *conn = cls_conn->dd_data;
377 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
378 struct beiscsi_endpoint *beiscsi_ep;
379 struct beiscsi_offload_params params;
6733b39a
JK		 380
381 memset(&params, 0, sizeof(struct beiscsi_offload_params));
382 beiscsi_ep = beiscsi_conn->ep;
383 if (!beiscsi_ep)
384 SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_start , no beiscsi_ep\n");
385
6733b39a
JK		 386 beiscsi_conn->login_in_progress = 0;
387 beiscsi_set_params_for_offld(beiscsi_conn, &params);
388 beiscsi_offload_connection(beiscsi_conn, &params);
389 iscsi_conn_start(cls_conn);
390 return 0;
391}
392
393/**
394 * beiscsi_get_cid - Allocate a cid
395 * @phba: The phba instance
396 */
397static int beiscsi_get_cid(struct beiscsi_hba *phba)
398{
399 unsigned short cid = 0xFFFF;
400
401 if (!phba->avlbl_cids)
402 return cid;
403
404 cid = phba->cid_array[phba->cid_alloc++];
405 if (phba->cid_alloc == phba->params.cxns_per_ctrl)
406 phba->cid_alloc = 0;
407 phba->avlbl_cids--;
408 return cid;
409}
410
411/**
412 * beiscsi_open_conn - Ask FW to open a TCP connection
413 * @ep: endpoint to be used
414 * @src_addr: The source IP address
415 * @dst_addr: The Destination IP address
416 *
417 * Asks the FW to open a TCP connection
418 */
419static int beiscsi_open_conn(struct iscsi_endpoint *ep,
420 struct sockaddr *src_addr,
421 struct sockaddr *dst_addr, int non_blocking)
422{
423 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
424 struct beiscsi_hba *phba = beiscsi_ep->phba;
425 int ret = -1;
426
427 beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
428 if (beiscsi_ep->ep_cid == 0xFFFF) {
429 SE_DEBUG(DBG_LVL_1, "No free cid available\n");
430 return ret;
431 }
432 SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d ",
433 beiscsi_ep->ep_cid);
7da50879
JK		 434 phba->ep_array[beiscsi_ep->ep_cid -
435 phba->fw_config.iscsi_cid_start] = ep;
436 if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start +
437 phba->params.cxns_per_ctrl * 2)) {
6733b39a
JK		 438 SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n");
439 return ret;
440 }
441
442 beiscsi_ep->cid_vld = 0;
443 return mgmt_open_connection(phba, dst_addr, beiscsi_ep);
444}
445
446/**
447 * beiscsi_put_cid - Free the cid
448 * @phba: The phba for which the cid is being freed
449 * @cid: The cid to free
450 */
451static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
452{
453 phba->avlbl_cids++;
454 phba->cid_array[phba->cid_free++] = cid;
455 if (phba->cid_free == phba->params.cxns_per_ctrl)
456 phba->cid_free = 0;
457}
458
459/**
460 * beiscsi_free_ep - free endpoint
461 * @ep: pointer to iscsi endpoint structure
462 */
c2462288 463static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
6733b39a 464{
6733b39a
JK		 465 struct beiscsi_hba *phba = beiscsi_ep->phba;
466
467 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
468 beiscsi_ep->phba = NULL;
6733b39a
JK		 469}
470
471/**
472 * beiscsi_ep_connect - Ask chip to create TCP Conn
473 * @scsi_host: Pointer to scsi_host structure
474 * @dst_addr: The IP address of Target
475 * @non_blocking: blocking or non-blocking call
476 *
477 * This routines first asks chip to create a connection and then allocates an EP
478 */
479struct iscsi_endpoint *
480beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
481 int non_blocking)
482{
483 struct beiscsi_hba *phba;
484 struct beiscsi_endpoint *beiscsi_ep;
485 struct iscsi_endpoint *ep;
486 int ret;
487
488 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_connect \n");
489 if (shost)
490 phba = iscsi_host_priv(shost);
491 else {
492 ret = -ENXIO;
493 SE_DEBUG(DBG_LVL_1, "shost is NULL \n");
494 return ERR_PTR(ret);
495 }
bfead3b2
JK		 496
497 if (phba->state) {
498 ret = -EBUSY;
c2462288 499 SE_DEBUG(DBG_LVL_1, "The Adapter state is Not UP \n");
bfead3b2
JK		 500 return ERR_PTR(ret);
501 }
502
6733b39a
JK		 503 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
504 if (!ep) {
505 ret = -ENOMEM;
506 return ERR_PTR(ret);
507 }
508
509 beiscsi_ep = ep->dd_data;
510 beiscsi_ep->phba = phba;
c2462288 511 beiscsi_ep->openiscsi_ep = ep;
6733b39a
JK		 512
513 if (beiscsi_open_conn(ep, NULL, dst_addr, non_blocking)) {
c2462288 514 SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn \n");
6733b39a
JK		 515 ret = -ENOMEM;
516 goto free_ep;
517 }
518
519 return ep;
520
521free_ep:
c2462288 522 beiscsi_free_ep(beiscsi_ep);
6733b39a
JK		 523 return ERR_PTR(ret);
524}
525
526/**
527 * beiscsi_ep_poll - Poll to see if connection is established
528 * @ep: endpoint to be used
529 * @timeout_ms: timeout specified in millisecs
530 *
531 * Poll to see if TCP connection established
532 */
533int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
534{
535 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
536
537 SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_poll\n");
538 if (beiscsi_ep->cid_vld == 1)
539 return 1;
540 else
541 return 0;
542}
543
544/**
545 * beiscsi_close_conn - Upload the connection
546 * @ep: The iscsi endpoint
547 * @flag: The type of connection closure
548 */
c2462288 549static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
6733b39a
JK		 550{
551 int ret = 0;
6733b39a
JK		 552 struct beiscsi_hba *phba = beiscsi_ep->phba;
553
554 if (MGMT_STATUS_SUCCESS !=
555 mgmt_upload_connection(phba, beiscsi_ep->ep_cid,
c2462288 556 flag)) {
6733b39a
JK		 557 SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x",
558 beiscsi_ep->ep_cid);
559 ret = -1;
560 }
561
562 return ret;
563}
564
565/**
566 * beiscsi_ep_disconnect - Tears down the TCP connection
567 * @ep: endpoint to be used
568 *
569 * Tears down the TCP connection
570 */
571void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
572{
573 struct beiscsi_conn *beiscsi_conn;
574 struct beiscsi_endpoint *beiscsi_ep;
575 struct beiscsi_hba *phba;
6733b39a
JK		 576
577 beiscsi_ep = ep->dd_data;
578 phba = beiscsi_ep->phba;
6733b39a
JK		 579
580 if (beiscsi_ep->conn) {
581 beiscsi_conn = beiscsi_ep->conn;
582 iscsi_suspend_queue(beiscsi_conn->conn);
6733b39a
JK		 583 }
584
6733b39a
JK		 585}
586
587/**
588 * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
589 * @phba: The phba instance
590 * @cid: The cid to free
591 */
592static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
593 unsigned int cid)
594{
595 if (phba->conn_table[cid])
596 phba->conn_table[cid] = NULL;
597 else {
598 SE_DEBUG(DBG_LVL_8, "Connection table Not occupied. \n");
599 return -EINVAL;
600 }
601 return 0;
602}
603
604/**
605 * beiscsi_conn_stop - Invalidate and stop the connection
606 * @cls_conn: pointer to get iscsi_conn
607 * @flag: The type of connection closure
608 */
609void beiscsi_conn_stop(struct iscsi_cls_conn *cls_conn, int flag)
610{
611 struct iscsi_conn *conn = cls_conn->dd_data;
612 struct beiscsi_conn *beiscsi_conn = conn->dd_data;
613 struct beiscsi_endpoint *beiscsi_ep;
614 struct iscsi_session *session = conn->session;
615 struct Scsi_Host *shost = iscsi_session_to_shost(session->cls_session);
616 struct beiscsi_hba *phba = iscsi_host_priv(shost);
617 unsigned int status;
618 unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
619
620 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop\n");
621 beiscsi_ep = beiscsi_conn->ep;
622 if (!beiscsi_ep) {
623 SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_stop , no beiscsi_ep\n");
624 return;
625 }
626 status = mgmt_invalidate_connection(phba, beiscsi_ep,
627 beiscsi_ep->ep_cid, 1,
628 savecfg_flag);
629 if (status != MGMT_STATUS_SUCCESS) {
630 SE_DEBUG(DBG_LVL_1,
631 "mgmt_invalidate_connection Failed for cid=%d \n",
632 beiscsi_ep->ep_cid);
633 }
c2462288
JK		 634 beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL);
635 beiscsi_free_ep(beiscsi_ep);
636 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
6733b39a
JK		 637 beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
638 iscsi_conn_stop(cls_conn, flag);
639}
Linux 6.x block layer and io_uring tree(s)