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authorNicholas Bellinger <nab@linux-iscsi.org>2012-05-15 14:34:29 -0400
committerJames Bottomley <JBottomley@Parallels.com>2012-05-22 06:49:20 -0400
commit75f8c1f693eefacc17a65614eb4ed1ee0f84fda6 (patch)
tree74bb9641b69fe3a18b213b564325b40446e6bef9
parent2d70c103fd2a066f904712b14239a5ce141f8236 (diff)
[SCSI] tcm_qla2xxx: Add >= 24xx series fabric module for target-core
This patch adds support for tcm_qla2xxx fabric module for target-core using the new qla_target.c LLD logic. This includes support for explict NodeACLs via configfs using tcm_qla2xxx_setup_nacl_from_rport() from libfc struct fc_host->rports, and demo-mode support for virtual LUN=0 access. This patch also adds support for using tcm_qla2xxx_lport->lport_fcport_map and ->lport_loopid_map of btree_head32 to track struct se_node_acl pointers for individual 24-bit Port ID and 16-bit Loop ID values w/ qla_target_template ->find_sess_by_s_id() and ->find_sess_by_loop_id() used in a number of locations into the primary I/O dispatch logic in qla_target.c LLD code. The main piece for FC Nexus setup is in tcm_qla2xxx_check_initiator_node_acl(), which calls tcm_qla2xxx_set_sess_by_[s_id,loop_id]() to setup our lport->lport_fcport_map and lport_loopid_map pointers respectively, and register the new nexus with TCM via __transport_register_session(). (nab: Add qla_tgt_mgmt_cmd usage with TARGET_SCF_ACK_KREF during TMRs + change tcm_qla2xxx_nacl->nport_id to u32 (DanC)) (danc: tcm_qla2xxx: checking for NULL instead of IS_ERR()) (roland: Fix up v3.5 breakage for removal of transport_do_task_sg_chain + Add hook so qla_target code can shutdown sessions) (steveh: Convert FC address map from flat array to btree) (randy: fix qla2xxx printk format warnings for size_t) (joern: Make most of tcm_qla2xxx static + remove unnecessary workqueue_struct prototypes + use WWN_SIZE instead of hard-coded constants) Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat
-rw-r--r--drivers/scsi/qla2xxx/Kconfig9
-rw-r--r--drivers/scsi/qla2xxx/Makefile1
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c1955
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.h82
4 files changed, 2047 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig
index 6208d562890d..317a7fdc3b82 100644
--- a/drivers/scsi/qla2xxx/Kconfig
+++ b/drivers/scsi/qla2xxx/Kconfig
@@ -25,3 +25,12 @@ config SCSI_QLA_FC
25 Firmware images can be retrieved from: 25 Firmware images can be retrieved from:
26 26
27 ftp://ftp.qlogic.com/outgoing/linux/firmware/ 27 ftp://ftp.qlogic.com/outgoing/linux/firmware/
28
29config TCM_QLA2XXX
30 tristate "TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs"
31 depends on SCSI_QLA_FC && TARGET_CORE
32 select LIBFC
33 select BTREE
34 default n
35 ---help---
36 Say Y here to enable the TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs
diff --git a/drivers/scsi/qla2xxx/Makefile b/drivers/scsi/qla2xxx/Makefile
index 702931ff67db..dce7d788cdc9 100644
--- a/drivers/scsi/qla2xxx/Makefile
+++ b/drivers/scsi/qla2xxx/Makefile
@@ -3,3 +3,4 @@ qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
3 qla_nx.o qla_target.o 3 qla_nx.o qla_target.o
4 4
5obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o 5obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
6obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx.o
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
new file mode 100644
index 000000000000..436598f57404
--- /dev/null
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -0,0 +1,1955 @@
1/*******************************************************************************
2 * This file contains tcm implementation using v4 configfs fabric infrastructure
3 * for QLogic target mode HBAs
4 *
5 * ?? Copyright 2010-2011 RisingTide Systems LLC.
6 *
7 * Licensed to the Linux Foundation under the General Public License (GPL)
8 * version 2.
9 *
10 * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
11 *
12 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
13 * the TCM_FC / Open-FCoE.org fabric module.
14 *
15 * Copyright (c) 2010 Cisco Systems, Inc
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License as published by
19 * the Free Software Foundation; either version 2 of the License, or
20 * (at your option) any later version.
21 *
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
26 ****************************************************************************/
27
28
29#include <linux/module.h>
30#include <linux/moduleparam.h>
31#include <generated/utsrelease.h>
32#include <linux/utsname.h>
33#include <linux/init.h>
34#include <linux/list.h>
35#include <linux/slab.h>
36#include <linux/kthread.h>
37#include <linux/types.h>
38#include <linux/string.h>
39#include <linux/configfs.h>
40#include <linux/ctype.h>
41#include <linux/string.h>
42#include <linux/ctype.h>
43#include <asm/unaligned.h>
44#include <scsi/scsi.h>
45#include <scsi/scsi_host.h>
46#include <scsi/scsi_device.h>
47#include <scsi/scsi_cmnd.h>
48#include <target/target_core_base.h>
49#include <target/target_core_fabric.h>
50#include <target/target_core_fabric_configfs.h>
51#include <target/target_core_configfs.h>
52#include <target/configfs_macros.h>
53
54#include "qla_def.h"
55#include "qla_target.h"
56#include "tcm_qla2xxx.h"
57
58struct workqueue_struct *tcm_qla2xxx_free_wq;
59struct workqueue_struct *tcm_qla2xxx_cmd_wq;
60
61static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
62{
63 return 1;
64}
65
66static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
67{
68 return 0;
69}
70
71/*
72 * Parse WWN.
73 * If strict, we require lower-case hex and colon separators to be sure
74 * the name is the same as what would be generated by ft_format_wwn()
75 * so the name and wwn are mapped one-to-one.
76 */
77static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
78{
79 const char *cp;
80 char c;
81 u32 nibble;
82 u32 byte = 0;
83 u32 pos = 0;
84 u32 err;
85
86 *wwn = 0;
87 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
88 c = *cp;
89 if (c == '\n' && cp[1] == '\0')
90 continue;
91 if (strict && pos++ == 2 && byte++ < 7) {
92 pos = 0;
93 if (c == ':')
94 continue;
95 err = 1;
96 goto fail;
97 }
98 if (c == '\0') {
99 err = 2;
100 if (strict && byte != 8)
101 goto fail;
102 return cp - name;
103 }
104 err = 3;
105 if (isdigit(c))
106 nibble = c - '0';
107 else if (isxdigit(c) && (islower(c) || !strict))
108 nibble = tolower(c) - 'a' + 10;
109 else
110 goto fail;
111 *wwn = (*wwn << 4) | nibble;
112 }
113 err = 4;
114fail:
115 pr_debug("err %u len %zu pos %u byte %u\n",
116 err, cp - name, pos, byte);
117 return -1;
118}
119
120static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
121{
122 u8 b[8];
123
124 put_unaligned_be64(wwn, b);
125 return snprintf(buf, len,
126 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
127 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
128}
129
130static char *tcm_qla2xxx_get_fabric_name(void)
131{
132 return "qla2xxx";
133}
134
135/*
136 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
137 */
138static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
139{
140 unsigned int i, j, value;
141 u8 wwn[8];
142
143 memset(wwn, 0, sizeof(wwn));
144
145 /* Validate and store the new name */
146 for (i = 0, j = 0; i < 16; i++) {
147 value = hex_to_bin(*ns++);
148 if (value >= 0)
149 j = (j << 4) | value;
150 else
151 return -EINVAL;
152
153 if (i % 2) {
154 wwn[i/2] = j & 0xff;
155 j = 0;
156 }
157 }
158
159 *nm = wwn_to_u64(wwn);
160 return 0;
161}
162
163/*
164 * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
165 * store_fc_host_vport_create()
166 */
167static int tcm_qla2xxx_npiv_parse_wwn(
168 const char *name,
169 size_t count,
170 u64 *wwpn,
171 u64 *wwnn)
172{
173 unsigned int cnt = count;
174 int rc;
175
176 *wwpn = 0;
177 *wwnn = 0;
178
179 /* count may include a LF at end of string */
180 if (name[cnt-1] == '\n')
181 cnt--;
182
183 /* validate we have enough characters for WWPN */
184 if ((cnt != (16+1+16)) || (name[16] != ':'))
185 return -EINVAL;
186
187 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
188 if (rc != 0)
189 return rc;
190
191 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
192 if (rc != 0)
193 return rc;
194
195 return 0;
196}
197
198static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
199 u64 wwpn, u64 wwnn)
200{
201 u8 b[8], b2[8];
202
203 put_unaligned_be64(wwpn, b);
204 put_unaligned_be64(wwnn, b2);
205 return snprintf(buf, len,
206 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
207 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
208 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
209 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
210}
211
212static char *tcm_qla2xxx_npiv_get_fabric_name(void)
213{
214 return "qla2xxx_npiv";
215}
216
217static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
218{
219 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
220 struct tcm_qla2xxx_tpg, se_tpg);
221 struct tcm_qla2xxx_lport *lport = tpg->lport;
222 u8 proto_id;
223
224 switch (lport->lport_proto_id) {
225 case SCSI_PROTOCOL_FCP:
226 default:
227 proto_id = fc_get_fabric_proto_ident(se_tpg);
228 break;
229 }
230
231 return proto_id;
232}
233
234static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
235{
236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
237 struct tcm_qla2xxx_tpg, se_tpg);
238 struct tcm_qla2xxx_lport *lport = tpg->lport;
239
240 return &lport->lport_name[0];
241}
242
243static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
244{
245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
246 struct tcm_qla2xxx_tpg, se_tpg);
247 struct tcm_qla2xxx_lport *lport = tpg->lport;
248
249 return &lport->lport_npiv_name[0];
250}
251
252static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
253{
254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
255 struct tcm_qla2xxx_tpg, se_tpg);
256 return tpg->lport_tpgt;
257}
258
259static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
260{
261 return 1;
262}
263
264static u32 tcm_qla2xxx_get_pr_transport_id(
265 struct se_portal_group *se_tpg,
266 struct se_node_acl *se_nacl,
267 struct t10_pr_registration *pr_reg,
268 int *format_code,
269 unsigned char *buf)
270{
271 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
272 struct tcm_qla2xxx_tpg, se_tpg);
273 struct tcm_qla2xxx_lport *lport = tpg->lport;
274 int ret = 0;
275
276 switch (lport->lport_proto_id) {
277 case SCSI_PROTOCOL_FCP:
278 default:
279 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
280 format_code, buf);
281 break;
282 }
283
284 return ret;
285}
286
287static u32 tcm_qla2xxx_get_pr_transport_id_len(
288 struct se_portal_group *se_tpg,
289 struct se_node_acl *se_nacl,
290 struct t10_pr_registration *pr_reg,
291 int *format_code)
292{
293 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
294 struct tcm_qla2xxx_tpg, se_tpg);
295 struct tcm_qla2xxx_lport *lport = tpg->lport;
296 int ret = 0;
297
298 switch (lport->lport_proto_id) {
299 case SCSI_PROTOCOL_FCP:
300 default:
301 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
302 format_code);
303 break;
304 }
305
306 return ret;
307}
308
309static char *tcm_qla2xxx_parse_pr_out_transport_id(
310 struct se_portal_group *se_tpg,
311 const char *buf,
312 u32 *out_tid_len,
313 char **port_nexus_ptr)
314{
315 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
316 struct tcm_qla2xxx_tpg, se_tpg);
317 struct tcm_qla2xxx_lport *lport = tpg->lport;
318 char *tid = NULL;
319
320 switch (lport->lport_proto_id) {
321 case SCSI_PROTOCOL_FCP:
322 default:
323 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
324 port_nexus_ptr);
325 break;
326 }
327
328 return tid;
329}
330
331static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
332{
333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
334 struct tcm_qla2xxx_tpg, se_tpg);
335
336 return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
337}
338
339static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
340{
341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
342 struct tcm_qla2xxx_tpg, se_tpg);
343
344 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
345}
346
347static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
348{
349 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
350 struct tcm_qla2xxx_tpg, se_tpg);
351
352 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
353}
354
355static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
356{
357 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
358 struct tcm_qla2xxx_tpg, se_tpg);
359
360 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
361}
362
363static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
364 struct se_portal_group *se_tpg)
365{
366 struct tcm_qla2xxx_nacl *nacl;
367
368 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
369 if (!nacl) {
370 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
371 return NULL;
372 }
373
374 return &nacl->se_node_acl;
375}
376
377static void tcm_qla2xxx_release_fabric_acl(
378 struct se_portal_group *se_tpg,
379 struct se_node_acl *se_nacl)
380{
381 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
382 struct tcm_qla2xxx_nacl, se_node_acl);
383 kfree(nacl);
384}
385
386static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
387{
388 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
389 struct tcm_qla2xxx_tpg, se_tpg);
390
391 return tpg->lport_tpgt;
392}
393
394static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
395{
396 struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
397 struct qla_tgt_mgmt_cmd, free_work);
398
399 transport_generic_free_cmd(&mcmd->se_cmd, 0);
400}
401
402/*
403 * Called from qla_target_template->free_mcmd(), and will call
404 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
405 * release callback. qla_hw_data->hardware_lock is expected to be held
406 */
407static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
408{
409 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
410 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
411}
412
413static void tcm_qla2xxx_complete_free(struct work_struct *work)
414{
415 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
416
417 transport_generic_free_cmd(&cmd->se_cmd, 0);
418}
419
420/*
421 * Called from qla_target_template->free_cmd(), and will call
422 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
423 * release callback. qla_hw_data->hardware_lock is expected to be held
424 */
425static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
426{
427 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
428 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
429}
430
431/*
432 * Called from struct target_core_fabric_ops->check_stop_free() context
433 */
434static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
435{
436 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
437}
438
439/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
440 * fabric descriptor @se_cmd command to release
441 */
442static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
443{
444 struct qla_tgt_cmd *cmd;
445
446 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
447 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
448 struct qla_tgt_mgmt_cmd, se_cmd);
449 qlt_free_mcmd(mcmd);
450 return;
451 }
452
453 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
454 qlt_free_cmd(cmd);
455}
456
457static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
458{
459 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
460 struct scsi_qla_host *vha;
461 unsigned long flags;
462
463 BUG_ON(!sess);
464 vha = sess->vha;
465
466 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
467 sess->tearing_down = 1;
468 target_splice_sess_cmd_list(se_sess);
469 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
470
471 return 1;
472}
473
474static void tcm_qla2xxx_close_session(struct se_session *se_sess)
475{
476 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
477 struct scsi_qla_host *vha;
478 unsigned long flags;
479
480 BUG_ON(!sess);
481 vha = sess->vha;
482
483 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
484 qlt_unreg_sess(sess);
485 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
486}
487
488static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
489{
490 return 0;
491}
492
493/*
494 * The LIO target core uses DMA_TO_DEVICE to mean that data is going
495 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
496 * that data is coming from the target (eg handling a READ). However,
497 * this is just the opposite of what we have to tell the DMA mapping
498 * layer -- eg when handling a READ, the HBA will have to DMA the data
499 * out of memory so it can send it to the initiator, which means we
500 * need to use DMA_TO_DEVICE when we map the data.
501 */
502static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
503{
504 if (se_cmd->se_cmd_flags & SCF_BIDI)
505 return DMA_BIDIRECTIONAL;
506
507 switch (se_cmd->data_direction) {
508 case DMA_TO_DEVICE:
509 return DMA_FROM_DEVICE;
510 case DMA_FROM_DEVICE:
511 return DMA_TO_DEVICE;
512 case DMA_NONE:
513 default:
514 return DMA_NONE;
515 }
516}
517
518static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
519{
520 struct qla_tgt_cmd *cmd = container_of(se_cmd,
521 struct qla_tgt_cmd, se_cmd);
522
523 cmd->bufflen = se_cmd->data_length;
524 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
525
526 cmd->sg_cnt = se_cmd->t_data_nents;
527 cmd->sg = se_cmd->t_data_sg;
528
529 /*
530 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
531 * the SGL mappings into PCIe memory for incoming FCP WRITE data.
532 */
533 return qlt_rdy_to_xfer(cmd);
534}
535
536static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
537{
538 unsigned long flags;
539 /*
540 * Check for WRITE_PENDING status to determine if we need to wait for
541 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
542 */
543 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
544 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
545 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
546 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
547 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
548 3000);
549 return 0;
550 }
551 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
552
553 return 0;
554}
555
556static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
557{
558 return;
559}
560
561static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
562{
563 struct qla_tgt_cmd *cmd = container_of(se_cmd,
564 struct qla_tgt_cmd, se_cmd);
565
566 return cmd->tag;
567}
568
569static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
570{
571 return 0;
572}
573
574/*
575 * Called from process context in qla_target.c:qlt_do_work() code
576 */
577static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
578 unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
579 int data_dir, int bidi)
580{
581 struct se_cmd *se_cmd = &cmd->se_cmd;
582 struct se_session *se_sess;
583 struct qla_tgt_sess *sess;
584 int flags = TARGET_SCF_ACK_KREF;
585
586 if (bidi)
587 flags |= TARGET_SCF_BIDI_OP;
588
589 sess = cmd->sess;
590 if (!sess) {
591 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
592 return -EINVAL;
593 }
594
595 se_sess = sess->se_sess;
596 if (!se_sess) {
597 pr_err("Unable to locate active struct se_session\n");
598 return -EINVAL;
599 }
600
601 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
602 cmd->unpacked_lun, data_length, fcp_task_attr,
603 data_dir, flags);
604 return 0;
605}
606
607static void tcm_qla2xxx_do_rsp(struct work_struct *work)
608{
609 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
610 /*
611 * Dispatch ->queue_status from workqueue process context
612 */
613 transport_generic_request_failure(&cmd->se_cmd);
614}
615
616/*
617 * Called from qla_target.c:qlt_do_ctio_completion()
618 */
619static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
620{
621 struct se_cmd *se_cmd = &cmd->se_cmd;
622 unsigned long flags;
623 /*
624 * Ensure that the complete FCP WRITE payload has been received.
625 * Otherwise return an exception via CHECK_CONDITION status.
626 */
627 if (!cmd->write_data_transferred) {
628 /*
629 * Check if se_cmd has already been aborted via LUN_RESET, and
630 * waiting upon completion in tcm_qla2xxx_write_pending_status()
631 */
632 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
633 if (se_cmd->transport_state & CMD_T_ABORTED) {
634 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
635 complete(&se_cmd->t_transport_stop_comp);
636 return 0;
637 }
638 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
639
640 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
641 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
642 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
643 return 0;
644 }
645 /*
646 * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
647 * status to the backstore processing thread.
648 */
649 return transport_generic_handle_data(&cmd->se_cmd);
650}
651
652/*
653 * Called from qla_target.c:qlt_issue_task_mgmt()
654 */
655int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
656 uint8_t tmr_func, uint32_t tag)
657{
658 struct qla_tgt_sess *sess = mcmd->sess;
659 struct se_cmd *se_cmd = &mcmd->se_cmd;
660
661 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
662 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
663}
664
665static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
666{
667 struct qla_tgt_cmd *cmd = container_of(se_cmd,
668 struct qla_tgt_cmd, se_cmd);
669
670 cmd->bufflen = se_cmd->data_length;
671 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
672 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
673
674 cmd->sg_cnt = se_cmd->t_data_nents;
675 cmd->sg = se_cmd->t_data_sg;
676 cmd->offset = 0;
677
678 /*
679 * Now queue completed DATA_IN the qla2xxx LLD and response ring
680 */
681 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
682 se_cmd->scsi_status);
683}
684
685static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
686{
687 struct qla_tgt_cmd *cmd = container_of(se_cmd,
688 struct qla_tgt_cmd, se_cmd);
689 int xmit_type = QLA_TGT_XMIT_STATUS;
690
691 cmd->bufflen = se_cmd->data_length;
692 cmd->sg = NULL;
693 cmd->sg_cnt = 0;
694 cmd->offset = 0;
695 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
696 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
697
698 if (se_cmd->data_direction == DMA_FROM_DEVICE) {
699 /*
700 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
701 * for qla_tgt_xmit_response LLD code
702 */
703 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
704 se_cmd->residual_count = se_cmd->data_length;
705
706 cmd->bufflen = 0;
707 }
708 /*
709 * Now queue status response to qla2xxx LLD code and response ring
710 */
711 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
712}
713
714static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
715{
716 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
717 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
718 struct qla_tgt_mgmt_cmd, se_cmd);
719
720 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
721 mcmd, se_tmr->function, se_tmr->response);
722 /*
723 * Do translation between TCM TM response codes and
724 * QLA2xxx FC TM response codes.
725 */
726 switch (se_tmr->response) {
727 case TMR_FUNCTION_COMPLETE:
728 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
729 break;
730 case TMR_TASK_DOES_NOT_EXIST:
731 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
732 break;
733 case TMR_FUNCTION_REJECTED:
734 mcmd->fc_tm_rsp = FC_TM_REJECT;
735 break;
736 case TMR_LUN_DOES_NOT_EXIST:
737 default:
738 mcmd->fc_tm_rsp = FC_TM_FAILED;
739 break;
740 }
741 /*
742 * Queue the TM response to QLA2xxx LLD to build a
743 * CTIO response packet.
744 */
745 qlt_xmit_tm_rsp(mcmd);
746
747 return 0;
748}
749
750static u16 tcm_qla2xxx_get_fabric_sense_len(void)
751{
752 return 0;
753}
754
755static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
756 u32 sense_length)
757{
758 return 0;
759}
760
761/* Local pointer to allocated TCM configfs fabric module */
762struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
763struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
764
765static int tcm_qla2xxx_setup_nacl_from_rport(
766 struct se_portal_group *se_tpg,
767 struct se_node_acl *se_nacl,
768 struct tcm_qla2xxx_lport *lport,
769 struct tcm_qla2xxx_nacl *nacl,
770 u64 rport_wwnn)
771{
772 struct scsi_qla_host *vha = lport->qla_vha;
773 struct Scsi_Host *sh = vha->host;
774 struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
775 struct fc_rport *rport;
776 unsigned long flags;
777 void *node;
778 int rc;
779
780 /*
781 * Scan the existing rports, and create a session for the
782 * explict NodeACL is an matching rport->node_name already
783 * exists.
784 */
785 spin_lock_irqsave(sh->host_lock, flags);
786 list_for_each_entry(rport, &fc_host->rports, peers) {
787 if (rport_wwnn != rport->node_name)
788 continue;
789
790 pr_debug("Located existing rport_wwpn and rport->node_name: 0x%016LX, port_id: 0x%04x\n",
791 rport->node_name, rport->port_id);
792 nacl->nport_id = rport->port_id;
793
794 spin_unlock_irqrestore(sh->host_lock, flags);
795
796 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
797 node = btree_lookup32(&lport->lport_fcport_map, rport->port_id);
798 if (node) {
799 rc = btree_update32(&lport->lport_fcport_map,
800 rport->port_id, se_nacl);
801 } else {
802 rc = btree_insert32(&lport->lport_fcport_map,
803 rport->port_id, se_nacl,
804 GFP_ATOMIC);
805 }
806 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
807
808 if (rc) {
809 pr_err("Unable to insert se_nacl into fcport_map");
810 WARN_ON(rc > 0);
811 return rc;
812 }
813
814 pr_debug("Inserted into fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%08x\n",
815 se_nacl, rport_wwnn, nacl->nport_id);
816
817 return 1;
818 }
819 spin_unlock_irqrestore(sh->host_lock, flags);
820
821 return 0;
822}
823
824/*
825 * Expected to be called with struct qla_hw_data->hardware_lock held
826 */
827static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
828{
829 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
830 struct se_portal_group *se_tpg = se_nacl->se_tpg;
831 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
832 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
833 struct tcm_qla2xxx_lport, lport_wwn);
834 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
835 struct tcm_qla2xxx_nacl, se_node_acl);
836 void *node;
837
838 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
839
840 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
841 WARN_ON(node && (node != se_nacl));
842
843 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
844 se_nacl, nacl->nport_wwnn, nacl->nport_id);
845}
846
847static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
848{
849 target_put_session(sess->se_sess);
850}
851
852static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
853{
854 tcm_qla2xxx_shutdown_session(sess->se_sess);
855}
856
857static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
858 struct se_portal_group *se_tpg,
859 struct config_group *group,
860 const char *name)
861{
862 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
863 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
864 struct tcm_qla2xxx_lport, lport_wwn);
865 struct se_node_acl *se_nacl, *se_nacl_new;
866 struct tcm_qla2xxx_nacl *nacl;
867 u64 wwnn;
868 u32 qla2xxx_nexus_depth;
869 int rc;
870
871 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
872 return ERR_PTR(-EINVAL);
873
874 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
875 if (!se_nacl_new)
876 return ERR_PTR(-ENOMEM);
877/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
878 qla2xxx_nexus_depth = 1;
879
880 /*
881 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
882 * when converting a NodeACL from demo mode -> explict
883 */
884 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
885 name, qla2xxx_nexus_depth);
886 if (IS_ERR(se_nacl)) {
887 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
888 return se_nacl;
889 }
890 /*
891 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
892 */
893 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
894 nacl->nport_wwnn = wwnn;
895 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
896 /*
897 * Setup a se_nacl handle based on an a matching struct fc_rport setup
898 * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
899 */
900 rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport,
901 nacl, wwnn);
902 if (rc < 0) {
903 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
904 return ERR_PTR(rc);
905 }
906
907 return se_nacl;
908}
909
910static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
911{
912 struct se_portal_group *se_tpg = se_acl->se_tpg;
913 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
914 struct tcm_qla2xxx_nacl, se_node_acl);
915
916 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
917 kfree(nacl);
918}
919
920/* Start items for tcm_qla2xxx_tpg_attrib_cit */
921
922#define DEF_QLA_TPG_ATTRIB(name) \
923 \
924static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
925 struct se_portal_group *se_tpg, \
926 char *page) \
927{ \
928 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
929 struct tcm_qla2xxx_tpg, se_tpg); \
930 \
931 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
932} \
933 \
934static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
935 struct se_portal_group *se_tpg, \
936 const char *page, \
937 size_t count) \
938{ \
939 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
940 struct tcm_qla2xxx_tpg, se_tpg); \
941 unsigned long val; \
942 int ret; \
943 \
944 ret = kstrtoul(page, 0, &val); \
945 if (ret < 0) { \
946 pr_err("kstrtoul() failed with" \
947 " ret: %d\n", ret); \
948 return -EINVAL; \
949 } \
950 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
951 \
952 return (!ret) ? count : -EINVAL; \
953}
954
955#define DEF_QLA_TPG_ATTR_BOOL(_name) \
956 \
957static int tcm_qla2xxx_set_attrib_##_name( \
958 struct tcm_qla2xxx_tpg *tpg, \
959 unsigned long val) \
960{ \
961 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
962 \
963 if ((val != 0) && (val != 1)) { \
964 pr_err("Illegal boolean value %lu\n", val); \
965 return -EINVAL; \
966 } \
967 \
968 a->_name = val; \
969 return 0; \
970}
971
972#define QLA_TPG_ATTR(_name, _mode) \
973 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
974
975/*
976 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
977 */
978DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
979DEF_QLA_TPG_ATTRIB(generate_node_acls);
980QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
981
982/*
983 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
984 */
985DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
986DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
987QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
988
989/*
990 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
991 */
992DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
993DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
994QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
995
996/*
997 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
998 */
999DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
1000DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
1001QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1002
1003static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
1004 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
1005 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
1006 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
1007 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
1008 NULL,
1009};
1010
1011/* End items for tcm_qla2xxx_tpg_attrib_cit */
1012
1013static ssize_t tcm_qla2xxx_tpg_show_enable(
1014 struct se_portal_group *se_tpg,
1015 char *page)
1016{
1017 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1018 struct tcm_qla2xxx_tpg, se_tpg);
1019
1020 return snprintf(page, PAGE_SIZE, "%d\n",
1021 atomic_read(&tpg->lport_tpg_enabled));
1022}
1023
1024static ssize_t tcm_qla2xxx_tpg_store_enable(
1025 struct se_portal_group *se_tpg,
1026 const char *page,
1027 size_t count)
1028{
1029 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1030 struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1031 struct tcm_qla2xxx_lport, lport_wwn);
1032 struct scsi_qla_host *vha = lport->qla_vha;
1033 struct qla_hw_data *ha = vha->hw;
1034 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1035 struct tcm_qla2xxx_tpg, se_tpg);
1036 unsigned long op;
1037 int rc;
1038
1039 rc = kstrtoul(page, 0, &op);
1040 if (rc < 0) {
1041 pr_err("kstrtoul() returned %d\n", rc);
1042 return -EINVAL;
1043 }
1044 if ((op != 1) && (op != 0)) {
1045 pr_err("Illegal value for tpg_enable: %lu\n", op);
1046 return -EINVAL;
1047 }
1048
1049 if (op) {
1050 atomic_set(&tpg->lport_tpg_enabled, 1);
1051 qlt_enable_vha(vha);
1052 } else {
1053 if (!ha->tgt.qla_tgt) {
1054 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1055 return -ENODEV;
1056 }
1057 atomic_set(&tpg->lport_tpg_enabled, 0);
1058 qlt_stop_phase1(ha->tgt.qla_tgt);
1059 }
1060
1061 return count;
1062}
1063
1064TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1065
1066static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1067 &tcm_qla2xxx_tpg_enable.attr,
1068 NULL,
1069};
1070
1071static struct se_portal_group *tcm_qla2xxx_make_tpg(
1072 struct se_wwn *wwn,
1073 struct config_group *group,
1074 const char *name)
1075{
1076 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1077 struct tcm_qla2xxx_lport, lport_wwn);
1078 struct tcm_qla2xxx_tpg *tpg;
1079 unsigned long tpgt;
1080 int ret;
1081
1082 if (strstr(name, "tpgt_") != name)
1083 return ERR_PTR(-EINVAL);
1084 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1085 return ERR_PTR(-EINVAL);
1086
1087 if (!lport->qla_npiv_vp && (tpgt != 1)) {
1088 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1089 return ERR_PTR(-ENOSYS);
1090 }
1091
1092 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1093 if (!tpg) {
1094 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1095 return ERR_PTR(-ENOMEM);
1096 }
1097 tpg->lport = lport;
1098 tpg->lport_tpgt = tpgt;
1099 /*
1100 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1101 * NodeACLs
1102 */
1103 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1104 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1105 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1106
1107 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1108 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1109 if (ret < 0) {
1110 kfree(tpg);
1111 return NULL;
1112 }
1113 /*
1114 * Setup local TPG=1 pointer for non NPIV mode.
1115 */
1116 if (lport->qla_npiv_vp == NULL)
1117 lport->tpg_1 = tpg;
1118
1119 return &tpg->se_tpg;
1120}
1121
1122static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1123{
1124 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1125 struct tcm_qla2xxx_tpg, se_tpg);
1126 struct tcm_qla2xxx_lport *lport = tpg->lport;
1127 struct scsi_qla_host *vha = lport->qla_vha;
1128 struct qla_hw_data *ha = vha->hw;
1129 /*
1130 * Call into qla2x_target.c LLD logic to shutdown the active
1131 * FC Nexuses and disable target mode operation for this qla_hw_data
1132 */
1133 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1134 qlt_stop_phase1(ha->tgt.qla_tgt);
1135
1136 core_tpg_deregister(se_tpg);
1137 /*
1138 * Clear local TPG=1 pointer for non NPIV mode.
1139 */
1140 if (lport->qla_npiv_vp == NULL)
1141 lport->tpg_1 = NULL;
1142
1143 kfree(tpg);
1144}
1145
1146static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1147 struct se_wwn *wwn,
1148 struct config_group *group,
1149 const char *name)
1150{
1151 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1152 struct tcm_qla2xxx_lport, lport_wwn);
1153 struct tcm_qla2xxx_tpg *tpg;
1154 unsigned long tpgt;
1155 int ret;
1156
1157 if (strstr(name, "tpgt_") != name)
1158 return ERR_PTR(-EINVAL);
1159 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1160 return ERR_PTR(-EINVAL);
1161
1162 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1163 if (!tpg) {
1164 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1165 return ERR_PTR(-ENOMEM);
1166 }
1167 tpg->lport = lport;
1168 tpg->lport_tpgt = tpgt;
1169
1170 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1171 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1172 if (ret < 0) {
1173 kfree(tpg);
1174 return NULL;
1175 }
1176 return &tpg->se_tpg;
1177}
1178
1179/*
1180 * Expected to be called with struct qla_hw_data->hardware_lock held
1181 */
1182static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1183 scsi_qla_host_t *vha,
1184 const uint8_t *s_id)
1185{
1186 struct qla_hw_data *ha = vha->hw;
1187 struct tcm_qla2xxx_lport *lport;
1188 struct se_node_acl *se_nacl;
1189 struct tcm_qla2xxx_nacl *nacl;
1190 u32 key;
1191
1192 lport = ha->tgt.target_lport_ptr;
1193 if (!lport) {
1194 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1195 dump_stack();
1196 return NULL;
1197 }
1198
1199 key = (((unsigned long)s_id[0] << 16) |
1200 ((unsigned long)s_id[1] << 8) |
1201 (unsigned long)s_id[2]);
1202 pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1203
1204 se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1205 if (!se_nacl) {
1206 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1207 return NULL;
1208 }
1209 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1210 se_nacl, se_nacl->initiatorname);
1211
1212 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1213 if (!nacl->qla_tgt_sess) {
1214 pr_err("Unable to locate struct qla_tgt_sess\n");
1215 return NULL;
1216 }
1217
1218 return nacl->qla_tgt_sess;
1219}
1220
1221/*
1222 * Expected to be called with struct qla_hw_data->hardware_lock held
1223 */
1224static void tcm_qla2xxx_set_sess_by_s_id(
1225 struct tcm_qla2xxx_lport *lport,
1226 struct se_node_acl *new_se_nacl,
1227 struct tcm_qla2xxx_nacl *nacl,
1228 struct se_session *se_sess,
1229 struct qla_tgt_sess *qla_tgt_sess,
1230 uint8_t *s_id)
1231{
1232 u32 key;
1233 void *slot;
1234 int rc;
1235
1236 key = (((unsigned long)s_id[0] << 16) |
1237 ((unsigned long)s_id[1] << 8) |
1238 (unsigned long)s_id[2]);
1239 pr_debug("set_sess_by_s_id: %06x\n", key);
1240
1241 slot = btree_lookup32(&lport->lport_fcport_map, key);
1242 if (!slot) {
1243 if (new_se_nacl) {
1244 pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1245 nacl->nport_id = key;
1246 rc = btree_insert32(&lport->lport_fcport_map, key,
1247 new_se_nacl, GFP_ATOMIC);
1248 if (rc)
1249 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1250 (int)key);
1251 } else {
1252 pr_debug("Wiping nonexisting fc_port entry\n");
1253 }
1254
1255 qla_tgt_sess->se_sess = se_sess;
1256 nacl->qla_tgt_sess = qla_tgt_sess;
1257 return;
1258 }
1259
1260 if (nacl->qla_tgt_sess) {
1261 if (new_se_nacl == NULL) {
1262 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1263 btree_remove32(&lport->lport_fcport_map, key);
1264 nacl->qla_tgt_sess = NULL;
1265 return;
1266 }
1267 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1268 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1269 qla_tgt_sess->se_sess = se_sess;
1270 nacl->qla_tgt_sess = qla_tgt_sess;
1271 return;
1272 }
1273
1274 if (new_se_nacl == NULL) {
1275 pr_debug("Clearing existing fc_port entry\n");
1276 btree_remove32(&lport->lport_fcport_map, key);
1277 return;
1278 }
1279
1280 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1281 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1282 qla_tgt_sess->se_sess = se_sess;
1283 nacl->qla_tgt_sess = qla_tgt_sess;
1284
1285 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1286 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1287}
1288
1289/*
1290 * Expected to be called with struct qla_hw_data->hardware_lock held
1291 */
1292static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1293 scsi_qla_host_t *vha,
1294 const uint16_t loop_id)
1295{
1296 struct qla_hw_data *ha = vha->hw;
1297 struct tcm_qla2xxx_lport *lport;
1298 struct se_node_acl *se_nacl;
1299 struct tcm_qla2xxx_nacl *nacl;
1300 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1301
1302 lport = ha->tgt.target_lport_ptr;
1303 if (!lport) {
1304 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1305 dump_stack();
1306 return NULL;
1307 }
1308
1309 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1310
1311 fc_loopid = lport->lport_loopid_map + loop_id;
1312 se_nacl = fc_loopid->se_nacl;
1313 if (!se_nacl) {
1314 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1315 loop_id);
1316 return NULL;
1317 }
1318
1319 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1320
1321 if (!nacl->qla_tgt_sess) {
1322 pr_err("Unable to locate struct qla_tgt_sess\n");
1323 return NULL;
1324 }
1325
1326 return nacl->qla_tgt_sess;
1327}
1328
1329/*
1330 * Expected to be called with struct qla_hw_data->hardware_lock held
1331 */
1332static void tcm_qla2xxx_set_sess_by_loop_id(
1333 struct tcm_qla2xxx_lport *lport,
1334 struct se_node_acl *new_se_nacl,
1335 struct tcm_qla2xxx_nacl *nacl,
1336 struct se_session *se_sess,
1337 struct qla_tgt_sess *qla_tgt_sess,
1338 uint16_t loop_id)
1339{
1340 struct se_node_acl *saved_nacl;
1341 struct tcm_qla2xxx_fc_loopid *fc_loopid;
1342
1343 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1344
1345 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1346 lport->lport_loopid_map)[loop_id];
1347
1348 saved_nacl = fc_loopid->se_nacl;
1349 if (!saved_nacl) {
1350 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1351 fc_loopid->se_nacl = new_se_nacl;
1352 if (qla_tgt_sess->se_sess != se_sess)
1353 qla_tgt_sess->se_sess = se_sess;
1354 if (nacl->qla_tgt_sess != qla_tgt_sess)
1355 nacl->qla_tgt_sess = qla_tgt_sess;
1356 return;
1357 }
1358
1359 if (nacl->qla_tgt_sess) {
1360 if (new_se_nacl == NULL) {
1361 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1362 fc_loopid->se_nacl = NULL;
1363 nacl->qla_tgt_sess = NULL;
1364 return;
1365 }
1366
1367 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1368 fc_loopid->se_nacl = new_se_nacl;
1369 if (qla_tgt_sess->se_sess != se_sess)
1370 qla_tgt_sess->se_sess = se_sess;
1371 if (nacl->qla_tgt_sess != qla_tgt_sess)
1372 nacl->qla_tgt_sess = qla_tgt_sess;
1373 return;
1374 }
1375
1376 if (new_se_nacl == NULL) {
1377 pr_debug("Clearing fc_loopid->se_nacl\n");
1378 fc_loopid->se_nacl = NULL;
1379 return;
1380 }
1381
1382 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1383 fc_loopid->se_nacl = new_se_nacl;
1384 if (qla_tgt_sess->se_sess != se_sess)
1385 qla_tgt_sess->se_sess = se_sess;
1386 if (nacl->qla_tgt_sess != qla_tgt_sess)
1387 nacl->qla_tgt_sess = qla_tgt_sess;
1388
1389 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1390 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1391}
1392
1393static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1394{
1395 struct qla_tgt *tgt = sess->tgt;
1396 struct qla_hw_data *ha = tgt->ha;
1397 struct se_session *se_sess;
1398 struct se_node_acl *se_nacl;
1399 struct tcm_qla2xxx_lport *lport;
1400 struct tcm_qla2xxx_nacl *nacl;
1401 unsigned char be_sid[3];
1402 unsigned long flags;
1403
1404 BUG_ON(in_interrupt());
1405
1406 se_sess = sess->se_sess;
1407 if (!se_sess) {
1408 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1409 dump_stack();
1410 return;
1411 }
1412 se_nacl = se_sess->se_node_acl;
1413 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1414
1415 lport = ha->tgt.target_lport_ptr;
1416 if (!lport) {
1417 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1418 dump_stack();
1419 return;
1420 }
1421 target_wait_for_sess_cmds(se_sess, 0);
1422 /*
1423 * And now clear the se_nacl and session pointers from our HW lport
1424 * mappings for fabric S_ID and LOOP_ID.
1425 */
1426 memset(&be_sid, 0, 3);
1427 be_sid[0] = sess->s_id.b.domain;
1428 be_sid[1] = sess->s_id.b.area;
1429 be_sid[2] = sess->s_id.b.al_pa;
1430
1431 spin_lock_irqsave(&ha->hardware_lock, flags);
1432 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1433 sess, be_sid);
1434 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1435 sess, sess->loop_id);
1436 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1437
1438 transport_deregister_session_configfs(sess->se_sess);
1439 transport_deregister_session(sess->se_sess);
1440}
1441
1442/*
1443 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1444 * to locate struct se_node_acl
1445 */
1446static int tcm_qla2xxx_check_initiator_node_acl(
1447 scsi_qla_host_t *vha,
1448 unsigned char *fc_wwpn,
1449 void *qla_tgt_sess,
1450 uint8_t *s_id,
1451 uint16_t loop_id)
1452{
1453 struct qla_hw_data *ha = vha->hw;
1454 struct tcm_qla2xxx_lport *lport;
1455 struct tcm_qla2xxx_tpg *tpg;
1456 struct tcm_qla2xxx_nacl *nacl;
1457 struct se_portal_group *se_tpg;
1458 struct se_node_acl *se_nacl;
1459 struct se_session *se_sess;
1460 struct qla_tgt_sess *sess = qla_tgt_sess;
1461 unsigned char port_name[36];
1462 unsigned long flags;
1463
1464 lport = ha->tgt.target_lport_ptr;
1465 if (!lport) {
1466 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1467 dump_stack();
1468 return -EINVAL;
1469 }
1470 /*
1471 * Locate the TPG=1 reference..
1472 */
1473 tpg = lport->tpg_1;
1474 if (!tpg) {
1475 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1476 return -EINVAL;
1477 }
1478 se_tpg = &tpg->se_tpg;
1479
1480 se_sess = transport_init_session();
1481 if (IS_ERR(se_sess)) {
1482 pr_err("Unable to initialize struct se_session\n");
1483 return PTR_ERR(se_sess);
1484 }
1485 /*
1486 * Format the FCP Initiator port_name into colon seperated values to
1487 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1488 */
1489 memset(&port_name, 0, 36);
1490 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1491 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1492 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1493 /*
1494 * Locate our struct se_node_acl either from an explict NodeACL created
1495 * via ConfigFS, or via running in TPG demo mode.
1496 */
1497 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1498 port_name);
1499 if (!se_sess->se_node_acl) {
1500 transport_free_session(se_sess);
1501 return -EINVAL;
1502 }
1503 se_nacl = se_sess->se_node_acl;
1504 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1505 /*
1506 * And now setup the new se_nacl and session pointers into our HW lport
1507 * mappings for fabric S_ID and LOOP_ID.
1508 */
1509 spin_lock_irqsave(&ha->hardware_lock, flags);
1510 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1511 qla_tgt_sess, s_id);
1512 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1513 qla_tgt_sess, loop_id);
1514 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1515 /*
1516 * Finally register the new FC Nexus with TCM
1517 */
1518 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1519
1520 return 0;
1521}
1522
1523/*
1524 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1525 */
1526static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1527 .handle_cmd = tcm_qla2xxx_handle_cmd,
1528 .handle_data = tcm_qla2xxx_handle_data,
1529 .handle_tmr = tcm_qla2xxx_handle_tmr,
1530 .free_cmd = tcm_qla2xxx_free_cmd,
1531 .free_mcmd = tcm_qla2xxx_free_mcmd,
1532 .free_session = tcm_qla2xxx_free_session,
1533 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1534 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
1535 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
1536 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1537 .put_sess = tcm_qla2xxx_put_sess,
1538 .shutdown_sess = tcm_qla2xxx_shutdown_sess,
1539};
1540
1541static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1542{
1543 int rc;
1544
1545 rc = btree_init32(&lport->lport_fcport_map);
1546 if (rc) {
1547 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1548 return rc;
1549 }
1550
1551 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1552 65536);
1553 if (!lport->lport_loopid_map) {
1554 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1555 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1556 btree_destroy32(&lport->lport_fcport_map);
1557 return -ENOMEM;
1558 }
1559 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1560 * 65536);
1561 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1562 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1563 return 0;
1564}
1565
1566static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1567{
1568 struct qla_hw_data *ha = vha->hw;
1569 struct tcm_qla2xxx_lport *lport;
1570 /*
1571 * Setup local pointer to vha, NPIV VP pointer (if present) and
1572 * vha->tcm_lport pointer
1573 */
1574 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1575 lport->qla_vha = vha;
1576
1577 return 0;
1578}
1579
1580static struct se_wwn *tcm_qla2xxx_make_lport(
1581 struct target_fabric_configfs *tf,
1582 struct config_group *group,
1583 const char *name)
1584{
1585 struct tcm_qla2xxx_lport *lport;
1586 u64 wwpn;
1587 int ret = -ENODEV;
1588
1589 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1590 return ERR_PTR(-EINVAL);
1591
1592 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1593 if (!lport) {
1594 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1595 return ERR_PTR(-ENOMEM);
1596 }
1597 lport->lport_wwpn = wwpn;
1598 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1599 wwpn);
1600
1601 ret = tcm_qla2xxx_init_lport(lport);
1602 if (ret != 0)
1603 goto out;
1604
1605 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1606 tcm_qla2xxx_lport_register_cb, lport);
1607 if (ret != 0)
1608 goto out_lport;
1609
1610 return &lport->lport_wwn;
1611out_lport:
1612 vfree(lport->lport_loopid_map);
1613 btree_destroy32(&lport->lport_fcport_map);
1614out:
1615 kfree(lport);
1616 return ERR_PTR(ret);
1617}
1618
1619static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1620{
1621 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1622 struct tcm_qla2xxx_lport, lport_wwn);
1623 struct scsi_qla_host *vha = lport->qla_vha;
1624 struct qla_hw_data *ha = vha->hw;
1625 struct se_node_acl *node;
1626 u32 key = 0;
1627
1628 /*
1629 * Call into qla2x_target.c LLD logic to complete the
1630 * shutdown of struct qla_tgt after the call to
1631 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1632 */
1633 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1634 qlt_stop_phase2(ha->tgt.qla_tgt);
1635
1636 qlt_lport_deregister(vha);
1637
1638 vfree(lport->lport_loopid_map);
1639 btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1640 btree_remove32(&lport->lport_fcport_map, key);
1641 btree_destroy32(&lport->lport_fcport_map);
1642 kfree(lport);
1643}
1644
1645static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1646 struct target_fabric_configfs *tf,
1647 struct config_group *group,
1648 const char *name)
1649{
1650 struct tcm_qla2xxx_lport *lport;
1651 u64 npiv_wwpn, npiv_wwnn;
1652 int ret;
1653
1654 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1655 &npiv_wwpn, &npiv_wwnn) < 0)
1656 return ERR_PTR(-EINVAL);
1657
1658 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1659 if (!lport) {
1660 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1661 return ERR_PTR(-ENOMEM);
1662 }
1663 lport->lport_npiv_wwpn = npiv_wwpn;
1664 lport->lport_npiv_wwnn = npiv_wwnn;
1665 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1666 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1667
1668/* FIXME: tcm_qla2xxx_npiv_make_lport */
1669 ret = -ENOSYS;
1670 if (ret != 0)
1671 goto out;
1672
1673 return &lport->lport_wwn;
1674out:
1675 kfree(lport);
1676 return ERR_PTR(ret);
1677}
1678
1679static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1680{
1681 struct tcm_qla2xxx_lport *lport = container_of(wwn,
1682 struct tcm_qla2xxx_lport, lport_wwn);
1683 struct scsi_qla_host *vha = lport->qla_vha;
1684 struct Scsi_Host *sh = vha->host;
1685 /*
1686 * Notify libfc that we want to release the lport->npiv_vport
1687 */
1688 fc_vport_terminate(lport->npiv_vport);
1689
1690 scsi_host_put(sh);
1691 kfree(lport);
1692}
1693
1694
1695static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1696 struct target_fabric_configfs *tf,
1697 char *page)
1698{
1699 return sprintf(page,
1700 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1701 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1702 utsname()->machine);
1703}
1704
1705TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1706
1707static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1708 &tcm_qla2xxx_wwn_version.attr,
1709 NULL,
1710};
1711
1712static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1713 .get_fabric_name = tcm_qla2xxx_get_fabric_name,
1714 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1715 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
1716 .tpg_get_tag = tcm_qla2xxx_get_tag,
1717 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1718 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1719 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1720 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1721 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
1722 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
1723 .tpg_check_demo_mode_write_protect =
1724 tcm_qla2xxx_check_demo_write_protect,
1725 .tpg_check_prod_mode_write_protect =
1726 tcm_qla2xxx_check_prod_write_protect,
1727 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1728 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1729 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1730 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1731 .new_cmd_map = NULL,
1732 .check_stop_free = tcm_qla2xxx_check_stop_free,
1733 .release_cmd = tcm_qla2xxx_release_cmd,
1734 .shutdown_session = tcm_qla2xxx_shutdown_session,
1735 .close_session = tcm_qla2xxx_close_session,
1736 .sess_get_index = tcm_qla2xxx_sess_get_index,
1737 .sess_get_initiator_sid = NULL,
1738 .write_pending = tcm_qla2xxx_write_pending,
1739 .write_pending_status = tcm_qla2xxx_write_pending_status,
1740 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1741 .get_task_tag = tcm_qla2xxx_get_task_tag,
1742 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1743 .queue_data_in = tcm_qla2xxx_queue_data_in,
1744 .queue_status = tcm_qla2xxx_queue_status,
1745 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1746 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1747 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1748 /*
1749 * Setup function pointers for generic logic in
1750 * target_core_fabric_configfs.c
1751 */
1752 .fabric_make_wwn = tcm_qla2xxx_make_lport,
1753 .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
1754 .fabric_make_tpg = tcm_qla2xxx_make_tpg,
1755 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1756 .fabric_post_link = NULL,
1757 .fabric_pre_unlink = NULL,
1758 .fabric_make_np = NULL,
1759 .fabric_drop_np = NULL,
1760 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1761 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1762};
1763
1764static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1765 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
1766 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
1767 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
1768 .tpg_get_tag = tcm_qla2xxx_get_tag,
1769 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
1770 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
1771 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
1772 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
1773 .tpg_check_demo_mode = tcm_qla2xxx_check_false,
1774 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
1775 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1776 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1777 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1778 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
1779 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
1780 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
1781 .release_cmd = tcm_qla2xxx_release_cmd,
1782 .shutdown_session = tcm_qla2xxx_shutdown_session,
1783 .close_session = tcm_qla2xxx_close_session,
1784 .sess_get_index = tcm_qla2xxx_sess_get_index,
1785 .sess_get_initiator_sid = NULL,
1786 .write_pending = tcm_qla2xxx_write_pending,
1787 .write_pending_status = tcm_qla2xxx_write_pending_status,
1788 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
1789 .get_task_tag = tcm_qla2xxx_get_task_tag,
1790 .get_cmd_state = tcm_qla2xxx_get_cmd_state,
1791 .queue_data_in = tcm_qla2xxx_queue_data_in,
1792 .queue_status = tcm_qla2xxx_queue_status,
1793 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
1794 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
1795 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
1796 /*
1797 * Setup function pointers for generic logic in
1798 * target_core_fabric_configfs.c
1799 */
1800 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
1801 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
1802 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
1803 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
1804 .fabric_post_link = NULL,
1805 .fabric_pre_unlink = NULL,
1806 .fabric_make_np = NULL,
1807 .fabric_drop_np = NULL,
1808 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
1809 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
1810};
1811
1812static int tcm_qla2xxx_register_configfs(void)
1813{
1814 struct target_fabric_configfs *fabric, *npiv_fabric;
1815 int ret;
1816
1817 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1818 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1819 utsname()->machine);
1820 /*
1821 * Register the top level struct config_item_type with TCM core
1822 */
1823 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1824 if (IS_ERR(fabric)) {
1825 pr_err("target_fabric_configfs_init() failed\n");
1826 return PTR_ERR(fabric);
1827 }
1828 /*
1829 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1830 */
1831 fabric->tf_ops = tcm_qla2xxx_ops;
1832 /*
1833 * Setup default attribute lists for various fabric->tf_cit_tmpl
1834 */
1835 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1836 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1837 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1838 tcm_qla2xxx_tpg_attrib_attrs;
1839 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1840 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1841 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1842 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1843 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1844 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1845 /*
1846 * Register the fabric for use within TCM
1847 */
1848 ret = target_fabric_configfs_register(fabric);
1849 if (ret < 0) {
1850 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1851 return ret;
1852 }
1853 /*
1854 * Setup our local pointer to *fabric
1855 */
1856 tcm_qla2xxx_fabric_configfs = fabric;
1857 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1858
1859 /*
1860 * Register the top level struct config_item_type for NPIV with TCM core
1861 */
1862 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1863 if (IS_ERR(npiv_fabric)) {
1864 pr_err("target_fabric_configfs_init() failed\n");
1865 ret = PTR_ERR(npiv_fabric);
1866 goto out_fabric;
1867 }
1868 /*
1869 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1870 */
1871 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1872 /*
1873 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1874 */
1875 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1876 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1877 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1878 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1879 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1880 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1881 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1882 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1883 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1884 /*
1885 * Register the npiv_fabric for use within TCM
1886 */
1887 ret = target_fabric_configfs_register(npiv_fabric);
1888 if (ret < 0) {
1889 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1890 goto out_fabric;
1891 }
1892 /*
1893 * Setup our local pointer to *npiv_fabric
1894 */
1895 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1896 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1897
1898 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1899 WQ_MEM_RECLAIM, 0);
1900 if (!tcm_qla2xxx_free_wq) {
1901 ret = -ENOMEM;
1902 goto out_fabric_npiv;
1903 }
1904
1905 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1906 if (!tcm_qla2xxx_cmd_wq) {
1907 ret = -ENOMEM;
1908 goto out_free_wq;
1909 }
1910
1911 return 0;
1912
1913out_free_wq:
1914 destroy_workqueue(tcm_qla2xxx_free_wq);
1915out_fabric_npiv:
1916 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1917out_fabric:
1918 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1919 return ret;
1920}
1921
1922static void tcm_qla2xxx_deregister_configfs(void)
1923{
1924 destroy_workqueue(tcm_qla2xxx_cmd_wq);
1925 destroy_workqueue(tcm_qla2xxx_free_wq);
1926
1927 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1928 tcm_qla2xxx_fabric_configfs = NULL;
1929 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1930
1931 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1932 tcm_qla2xxx_npiv_fabric_configfs = NULL;
1933 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1934}
1935
1936static int __init tcm_qla2xxx_init(void)
1937{
1938 int ret;
1939
1940 ret = tcm_qla2xxx_register_configfs();
1941 if (ret < 0)
1942 return ret;
1943
1944 return 0;
1945}
1946
1947static void __exit tcm_qla2xxx_exit(void)
1948{
1949 tcm_qla2xxx_deregister_configfs();
1950}
1951
1952MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1953MODULE_LICENSE("GPL");
1954module_init(tcm_qla2xxx_init);
1955module_exit(tcm_qla2xxx_exit);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.h b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
new file mode 100644
index 000000000000..825498103352
--- /dev/null
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.h
@@ -0,0 +1,82 @@
1#include <target/target_core_base.h>
2#include <linux/btree.h>
3
4#define TCM_QLA2XXX_VERSION "v0.1"
5/* length of ASCII WWPNs including pad */
6#define TCM_QLA2XXX_NAMELEN 32
7/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */
8#define TCM_QLA2XXX_NPIV_NAMELEN 66
9
10#include "qla_target.h"
11
12struct tcm_qla2xxx_nacl {
13 /* From libfc struct fc_rport->port_id */
14 u32 nport_id;
15 /* Binary World Wide unique Node Name for remote FC Initiator Nport */
16 u64 nport_wwnn;
17 /* ASCII formatted WWPN for FC Initiator Nport */
18 char nport_name[TCM_QLA2XXX_NAMELEN];
19 /* Pointer to qla_tgt_sess */
20 struct qla_tgt_sess *qla_tgt_sess;
21 /* Pointer to TCM FC nexus */
22 struct se_session *nport_nexus;
23 /* Returned by tcm_qla2xxx_make_nodeacl() */
24 struct se_node_acl se_node_acl;
25};
26
27struct tcm_qla2xxx_tpg_attrib {
28 int generate_node_acls;
29 int cache_dynamic_acls;
30 int demo_mode_write_protect;
31 int prod_mode_write_protect;
32};
33
34struct tcm_qla2xxx_tpg {
35 /* FC lport target portal group tag for TCM */
36 u16 lport_tpgt;
37 /* Atomic bit to determine TPG active status */
38 atomic_t lport_tpg_enabled;
39 /* Pointer back to tcm_qla2xxx_lport */
40 struct tcm_qla2xxx_lport *lport;
41 /* Used by tcm_qla2xxx_tpg_attrib_cit */
42 struct tcm_qla2xxx_tpg_attrib tpg_attrib;
43 /* Returned by tcm_qla2xxx_make_tpg() */
44 struct se_portal_group se_tpg;
45};
46
47#define QLA_TPG_ATTRIB(tpg) (&(tpg)->tpg_attrib)
48
49struct tcm_qla2xxx_fc_loopid {
50 struct se_node_acl *se_nacl;
51};
52
53struct tcm_qla2xxx_lport {
54 /* SCSI protocol the lport is providing */
55 u8 lport_proto_id;
56 /* Binary World Wide unique Port Name for FC Target Lport */
57 u64 lport_wwpn;
58 /* Binary World Wide unique Port Name for FC NPIV Target Lport */
59 u64 lport_npiv_wwpn;
60 /* Binary World Wide unique Node Name for FC NPIV Target Lport */
61 u64 lport_npiv_wwnn;
62 /* ASCII formatted WWPN for FC Target Lport */
63 char lport_name[TCM_QLA2XXX_NAMELEN];
64 /* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */
65 char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN];
66 /* map for fc_port pointers in 24-bit FC Port ID space */
67 struct btree_head32 lport_fcport_map;
68 /* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */
69 struct tcm_qla2xxx_fc_loopid *lport_loopid_map;
70 /* Pointer to struct scsi_qla_host from qla2xxx LLD */
71 struct scsi_qla_host *qla_vha;
72 /* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */
73 struct scsi_qla_host *qla_npiv_vp;
74 /* Pointer to struct qla_tgt pointer */
75 struct qla_tgt lport_qla_tgt;
76 /* Pointer to struct fc_vport for NPIV vport from libfc */
77 struct fc_vport *npiv_vport;
78 /* Pointer to TPG=1 for non NPIV mode */
79 struct tcm_qla2xxx_tpg *tpg_1;
80 /* Returned by tcm_qla2xxx_make_lport() */
81 struct se_wwn lport_wwn;
82};
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-10 02:22:07 -0400