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92d7f7b0 JS |
1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
3 | * Fibre Channel Host Bus Adapters. * | |
4 | * Copyright (C) 2004-2006 Emulex. All rights reserved. * | |
5 | * EMULEX and SLI are trademarks of Emulex. * | |
6 | * www.emulex.com * | |
7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * | |
8 | * * | |
9 | * This program is free software; you can redistribute it and/or * | |
10 | * modify it under the terms of version 2 of the GNU General * | |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
20 | *******************************************************************/ | |
21 | ||
22 | #include <linux/blkdev.h> | |
23 | #include <linux/delay.h> | |
24 | #include <linux/dma-mapping.h> | |
25 | #include <linux/idr.h> | |
26 | #include <linux/interrupt.h> | |
27 | #include <linux/kthread.h> | |
28 | #include <linux/pci.h> | |
29 | #include <linux/spinlock.h> | |
30 | ||
31 | #include <scsi/scsi.h> | |
32 | #include <scsi/scsi_device.h> | |
33 | #include <scsi/scsi_host.h> | |
34 | #include <scsi/scsi_transport_fc.h> | |
35 | #include "lpfc_hw.h" | |
36 | #include "lpfc_sli.h" | |
37 | #include "lpfc_disc.h" | |
38 | #include "lpfc_scsi.h" | |
39 | #include "lpfc.h" | |
40 | #include "lpfc_logmsg.h" | |
41 | #include "lpfc_crtn.h" | |
42 | #include "lpfc_version.h" | |
43 | #include "lpfc_vport.h" | |
44 | ||
45 | inline void lpfc_vport_set_state(struct lpfc_vport *vport, | |
46 | enum fc_vport_state new_state) | |
47 | { | |
48 | struct fc_vport *fc_vport = vport->fc_vport; | |
49 | ||
50 | if (fc_vport) { | |
51 | /* | |
52 | * When the transport defines fc_vport_set state we will replace | |
53 | * this code with the following line | |
54 | */ | |
55 | /* fc_vport_set_state(fc_vport, new_state); */ | |
56 | if (new_state != FC_VPORT_INITIALIZING) | |
57 | fc_vport->vport_last_state = fc_vport->vport_state; | |
58 | fc_vport->vport_state = new_state; | |
59 | } | |
60 | ||
61 | /* for all the error states we will set the invternal state to FAILED */ | |
62 | switch (new_state) { | |
63 | case FC_VPORT_NO_FABRIC_SUPP: | |
64 | case FC_VPORT_NO_FABRIC_RSCS: | |
65 | case FC_VPORT_FABRIC_LOGOUT: | |
66 | case FC_VPORT_FABRIC_REJ_WWN: | |
67 | case FC_VPORT_FAILED: | |
68 | vport->port_state = LPFC_VPORT_FAILED; | |
69 | break; | |
70 | case FC_VPORT_LINKDOWN: | |
71 | vport->port_state = LPFC_VPORT_UNKNOWN; | |
72 | break; | |
73 | default: | |
74 | /* do nothing */ | |
75 | break; | |
76 | } | |
77 | } | |
78 | ||
79 | static int | |
80 | lpfc_alloc_vpi(struct lpfc_hba *phba) | |
81 | { | |
82 | int vpi; | |
83 | ||
84 | spin_lock_irq(&phba->hbalock); | |
858c9f6c JS |
85 | /* Start at bit 1 because vpi zero is reserved for the physical port */ |
86 | vpi = find_next_zero_bit(phba->vpi_bmask, (phba->max_vpi + 1), 1); | |
92d7f7b0 JS |
87 | if (vpi > phba->max_vpi) |
88 | vpi = 0; | |
89 | else | |
90 | set_bit(vpi, phba->vpi_bmask); | |
91 | spin_unlock_irq(&phba->hbalock); | |
92 | return vpi; | |
93 | } | |
94 | ||
95 | static void | |
96 | lpfc_free_vpi(struct lpfc_hba *phba, int vpi) | |
97 | { | |
98 | spin_lock_irq(&phba->hbalock); | |
99 | clear_bit(vpi, phba->vpi_bmask); | |
100 | spin_unlock_irq(&phba->hbalock); | |
101 | } | |
102 | ||
103 | static int | |
104 | lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport) | |
105 | { | |
106 | LPFC_MBOXQ_t *pmb; | |
107 | MAILBOX_t *mb; | |
108 | struct lpfc_dmabuf *mp; | |
109 | int rc; | |
110 | ||
111 | pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); | |
112 | if (!pmb) { | |
113 | return -ENOMEM; | |
114 | } | |
115 | mb = &pmb->mb; | |
116 | ||
117 | lpfc_read_sparam(phba, pmb, vport->vpi); | |
118 | /* | |
119 | * Grab buffer pointer and clear context1 so we can use | |
120 | * lpfc_sli_issue_box_wait | |
121 | */ | |
122 | mp = (struct lpfc_dmabuf *) pmb->context1; | |
123 | pmb->context1 = NULL; | |
124 | ||
125 | pmb->vport = vport; | |
126 | rc = lpfc_sli_issue_mbox_wait(phba, pmb, phba->fc_ratov * 2); | |
127 | if (rc != MBX_SUCCESS) { | |
98c9ea5c JS |
128 | if (signal_pending(current)) { |
129 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, | |
130 | "1830 Signal aborted mbxCmd x%x\n", | |
131 | mb->mbxCommand); | |
132 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
133 | kfree(mp); | |
134 | if (rc != MBX_TIMEOUT) | |
135 | mempool_free(pmb, phba->mbox_mem_pool); | |
136 | return -EINTR; | |
137 | } else { | |
138 | lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT | LOG_VPORT, | |
139 | "1818 VPort failed init, mbxCmd x%x " | |
140 | "READ_SPARM mbxStatus x%x, rc = x%x\n", | |
141 | mb->mbxCommand, mb->mbxStatus, rc); | |
142 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
143 | kfree(mp); | |
144 | if (rc != MBX_TIMEOUT) | |
145 | mempool_free(pmb, phba->mbox_mem_pool); | |
146 | return -EIO; | |
147 | } | |
92d7f7b0 JS |
148 | } |
149 | ||
150 | memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); | |
151 | memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, | |
152 | sizeof (struct lpfc_name)); | |
153 | memcpy(&vport->fc_portname, &vport->fc_sparam.portName, | |
154 | sizeof (struct lpfc_name)); | |
155 | ||
156 | lpfc_mbuf_free(phba, mp->virt, mp->phys); | |
157 | kfree(mp); | |
158 | mempool_free(pmb, phba->mbox_mem_pool); | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | static int | |
164 | lpfc_valid_wwn_format(struct lpfc_hba *phba, struct lpfc_name *wwn, | |
165 | const char *name_type) | |
166 | { | |
167 | /* ensure that IEEE format 1 addresses | |
168 | * contain zeros in bits 59-48 | |
169 | */ | |
170 | if (!((wwn->u.wwn[0] >> 4) == 1 && | |
171 | ((wwn->u.wwn[0] & 0xf) != 0 || (wwn->u.wwn[1] & 0xf) != 0))) | |
172 | return 1; | |
173 | ||
174 | lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, | |
e8b62011 | 175 | "1822 Invalid %s: %02x:%02x:%02x:%02x:" |
92d7f7b0 | 176 | "%02x:%02x:%02x:%02x\n", |
e8b62011 | 177 | name_type, |
92d7f7b0 JS |
178 | wwn->u.wwn[0], wwn->u.wwn[1], |
179 | wwn->u.wwn[2], wwn->u.wwn[3], | |
180 | wwn->u.wwn[4], wwn->u.wwn[5], | |
181 | wwn->u.wwn[6], wwn->u.wwn[7]); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | static int | |
186 | lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport) | |
187 | { | |
188 | struct lpfc_vport *vport; | |
549e55cd | 189 | unsigned long flags; |
92d7f7b0 | 190 | |
549e55cd | 191 | spin_lock_irqsave(&phba->hbalock, flags); |
92d7f7b0 JS |
192 | list_for_each_entry(vport, &phba->port_list, listentry) { |
193 | if (vport == new_vport) | |
194 | continue; | |
195 | /* If they match, return not unique */ | |
196 | if (memcmp(&vport->fc_sparam.portName, | |
549e55cd JS |
197 | &new_vport->fc_sparam.portName, |
198 | sizeof(struct lpfc_name)) == 0) { | |
199 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
92d7f7b0 | 200 | return 0; |
549e55cd | 201 | } |
92d7f7b0 | 202 | } |
549e55cd | 203 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92d7f7b0 JS |
204 | return 1; |
205 | } | |
206 | ||
207 | int | |
208 | lpfc_vport_create(struct fc_vport *fc_vport, bool disable) | |
209 | { | |
210 | struct lpfc_nodelist *ndlp; | |
3de2a653 JS |
211 | struct Scsi_Host *shost = fc_vport->shost; |
212 | struct lpfc_vport *pport = (struct lpfc_vport *) shost->hostdata; | |
92d7f7b0 JS |
213 | struct lpfc_hba *phba = pport->phba; |
214 | struct lpfc_vport *vport = NULL; | |
215 | int instance; | |
216 | int vpi; | |
217 | int rc = VPORT_ERROR; | |
98c9ea5c | 218 | int status; |
92d7f7b0 JS |
219 | |
220 | if ((phba->sli_rev < 3) || | |
221 | !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { | |
222 | lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, | |
e8b62011 | 223 | "1808 Create VPORT failed: " |
92d7f7b0 | 224 | "NPIV is not enabled: SLImode:%d\n", |
e8b62011 | 225 | phba->sli_rev); |
92d7f7b0 JS |
226 | rc = VPORT_INVAL; |
227 | goto error_out; | |
228 | } | |
229 | ||
230 | vpi = lpfc_alloc_vpi(phba); | |
231 | if (vpi == 0) { | |
232 | lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, | |
e8b62011 | 233 | "1809 Create VPORT failed: " |
92d7f7b0 | 234 | "Max VPORTs (%d) exceeded\n", |
e8b62011 | 235 | phba->max_vpi); |
92d7f7b0 JS |
236 | rc = VPORT_NORESOURCES; |
237 | goto error_out; | |
238 | } | |
239 | ||
240 | ||
241 | /* Assign an unused board number */ | |
242 | if ((instance = lpfc_get_instance()) < 0) { | |
243 | lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, | |
e8b62011 JS |
244 | "1810 Create VPORT failed: Cannot get " |
245 | "instance number\n"); | |
92d7f7b0 JS |
246 | lpfc_free_vpi(phba, vpi); |
247 | rc = VPORT_NORESOURCES; | |
248 | goto error_out; | |
249 | } | |
250 | ||
3de2a653 | 251 | vport = lpfc_create_port(phba, instance, &fc_vport->dev); |
92d7f7b0 JS |
252 | if (!vport) { |
253 | lpfc_printf_log(phba, KERN_ERR, LOG_VPORT, | |
e8b62011 | 254 | "1811 Create VPORT failed: vpi x%x\n", vpi); |
92d7f7b0 JS |
255 | lpfc_free_vpi(phba, vpi); |
256 | rc = VPORT_NORESOURCES; | |
257 | goto error_out; | |
258 | } | |
259 | ||
260 | vport->vpi = vpi; | |
858c9f6c JS |
261 | lpfc_debugfs_initialize(vport); |
262 | ||
98c9ea5c JS |
263 | if ((status = lpfc_vport_sparm(phba, vport))) { |
264 | if (status == -EINTR) { | |
265 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, | |
266 | "1831 Create VPORT Interrupted.\n"); | |
267 | rc = VPORT_ERROR; | |
268 | } else { | |
269 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, | |
270 | "1813 Create VPORT failed. " | |
271 | "Cannot get sparam\n"); | |
272 | rc = VPORT_NORESOURCES; | |
273 | } | |
92d7f7b0 JS |
274 | lpfc_free_vpi(phba, vpi); |
275 | destroy_port(vport); | |
92d7f7b0 JS |
276 | goto error_out; |
277 | } | |
278 | ||
279 | memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8); | |
280 | memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8); | |
281 | ||
282 | if (fc_vport->node_name != 0) | |
283 | u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn); | |
284 | if (fc_vport->port_name != 0) | |
285 | u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn); | |
286 | ||
287 | memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8); | |
288 | memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8); | |
289 | ||
290 | if (!lpfc_valid_wwn_format(phba, &vport->fc_sparam.nodeName, "WWNN") || | |
291 | !lpfc_valid_wwn_format(phba, &vport->fc_sparam.portName, "WWPN")) { | |
e8b62011 JS |
292 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
293 | "1821 Create VPORT failed. " | |
294 | "Invalid WWN format\n"); | |
92d7f7b0 JS |
295 | lpfc_free_vpi(phba, vpi); |
296 | destroy_port(vport); | |
297 | rc = VPORT_INVAL; | |
298 | goto error_out; | |
299 | } | |
300 | ||
301 | if (!lpfc_unique_wwpn(phba, vport)) { | |
e8b62011 JS |
302 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
303 | "1823 Create VPORT failed. " | |
304 | "Duplicate WWN on HBA\n"); | |
92d7f7b0 JS |
305 | lpfc_free_vpi(phba, vpi); |
306 | destroy_port(vport); | |
307 | rc = VPORT_INVAL; | |
308 | goto error_out; | |
309 | } | |
310 | ||
311 | *(struct lpfc_vport **)fc_vport->dd_data = vport; | |
312 | vport->fc_vport = fc_vport; | |
313 | ||
314 | if ((phba->link_state < LPFC_LINK_UP) || | |
315 | (phba->fc_topology == TOPOLOGY_LOOP)) { | |
316 | lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); | |
317 | rc = VPORT_OK; | |
318 | goto out; | |
319 | } | |
320 | ||
321 | if (disable) { | |
322 | rc = VPORT_OK; | |
323 | goto out; | |
324 | } | |
325 | ||
326 | /* Use the Physical nodes Fabric NDLP to determine if the link is | |
327 | * up and ready to FDISC. | |
328 | */ | |
329 | ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); | |
330 | if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { | |
858c9f6c JS |
331 | if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { |
332 | lpfc_set_disctmo(vport); | |
333 | lpfc_initial_fdisc(vport); | |
334 | } else { | |
335 | lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); | |
e8b62011 JS |
336 | lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
337 | "0262 No NPIV Fabric support\n"); | |
858c9f6c | 338 | } |
92d7f7b0 JS |
339 | } else { |
340 | lpfc_vport_set_state(vport, FC_VPORT_FAILED); | |
341 | } | |
342 | rc = VPORT_OK; | |
343 | ||
344 | out: | |
a58cbd52 JS |
345 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
346 | "1825 Vport Created.\n"); | |
92d7f7b0 JS |
347 | lpfc_host_attrib_init(lpfc_shost_from_vport(vport)); |
348 | error_out: | |
349 | return rc; | |
350 | } | |
351 | ||
311464ec | 352 | static int |
92d7f7b0 JS |
353 | disable_vport(struct fc_vport *fc_vport) |
354 | { | |
355 | struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; | |
356 | struct lpfc_hba *phba = vport->phba; | |
357 | struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL; | |
358 | long timeout; | |
359 | ||
360 | ndlp = lpfc_findnode_did(vport, Fabric_DID); | |
361 | if (ndlp && phba->link_state >= LPFC_LINK_UP) { | |
362 | vport->unreg_vpi_cmpl = VPORT_INVAL; | |
363 | timeout = msecs_to_jiffies(phba->fc_ratov * 2000); | |
364 | if (!lpfc_issue_els_npiv_logo(vport, ndlp)) | |
365 | while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) | |
366 | timeout = schedule_timeout(timeout); | |
367 | } | |
368 | ||
369 | lpfc_sli_host_down(vport); | |
370 | ||
371 | /* Mark all nodes for discovery so we can remove them by | |
372 | * calling lpfc_cleanup_rpis(vport, 1) | |
373 | */ | |
374 | list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { | |
375 | if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) | |
376 | continue; | |
377 | lpfc_disc_state_machine(vport, ndlp, NULL, | |
378 | NLP_EVT_DEVICE_RECOVERY); | |
379 | } | |
380 | lpfc_cleanup_rpis(vport, 1); | |
381 | ||
382 | lpfc_stop_vport_timers(vport); | |
383 | lpfc_unreg_all_rpis(vport); | |
384 | lpfc_unreg_default_rpis(vport); | |
385 | /* | |
386 | * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the | |
387 | * scsi_host_put() to release the vport. | |
388 | */ | |
389 | lpfc_mbx_unreg_vpi(vport); | |
390 | ||
391 | lpfc_vport_set_state(vport, FC_VPORT_DISABLED); | |
a58cbd52 JS |
392 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
393 | "1826 Vport Disabled.\n"); | |
92d7f7b0 JS |
394 | return VPORT_OK; |
395 | } | |
396 | ||
311464ec | 397 | static int |
92d7f7b0 JS |
398 | enable_vport(struct fc_vport *fc_vport) |
399 | { | |
400 | struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; | |
401 | struct lpfc_hba *phba = vport->phba; | |
402 | struct lpfc_nodelist *ndlp = NULL; | |
403 | ||
404 | if ((phba->link_state < LPFC_LINK_UP) || | |
405 | (phba->fc_topology == TOPOLOGY_LOOP)) { | |
406 | lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN); | |
407 | return VPORT_OK; | |
408 | } | |
409 | ||
410 | vport->load_flag |= FC_LOADING; | |
411 | vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; | |
412 | ||
413 | /* Use the Physical nodes Fabric NDLP to determine if the link is | |
414 | * up and ready to FDISC. | |
415 | */ | |
416 | ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); | |
417 | if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE) { | |
858c9f6c JS |
418 | if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) { |
419 | lpfc_set_disctmo(vport); | |
420 | lpfc_initial_fdisc(vport); | |
421 | } else { | |
422 | lpfc_vport_set_state(vport, FC_VPORT_NO_FABRIC_SUPP); | |
e8b62011 JS |
423 | lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, |
424 | "0264 No NPIV Fabric support\n"); | |
858c9f6c | 425 | } |
92d7f7b0 JS |
426 | } else { |
427 | lpfc_vport_set_state(vport, FC_VPORT_FAILED); | |
428 | } | |
a58cbd52 JS |
429 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
430 | "1827 Vport Enabled.\n"); | |
92d7f7b0 JS |
431 | return VPORT_OK; |
432 | } | |
433 | ||
434 | int | |
435 | lpfc_vport_disable(struct fc_vport *fc_vport, bool disable) | |
436 | { | |
437 | if (disable) | |
438 | return disable_vport(fc_vport); | |
439 | else | |
440 | return enable_vport(fc_vport); | |
441 | } | |
442 | ||
443 | ||
444 | int | |
445 | lpfc_vport_delete(struct fc_vport *fc_vport) | |
446 | { | |
447 | struct lpfc_nodelist *ndlp = NULL; | |
448 | struct lpfc_nodelist *next_ndlp; | |
449 | struct Scsi_Host *shost = (struct Scsi_Host *) fc_vport->shost; | |
450 | struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; | |
451 | struct lpfc_hba *phba = vport->phba; | |
452 | long timeout; | |
92d7f7b0 | 453 | |
51ef4c26 JS |
454 | if (vport->port_type == LPFC_PHYSICAL_PORT) { |
455 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, | |
456 | "1812 vport_delete failed: Cannot delete " | |
457 | "physical host\n"); | |
458 | return VPORT_ERROR; | |
459 | } | |
460 | /* | |
461 | * If we are not unloading the driver then prevent the vport_delete | |
462 | * from happening until after this vport's discovery is finished. | |
463 | */ | |
464 | if (!(phba->pport->load_flag & FC_UNLOADING)) { | |
465 | int check_count = 0; | |
466 | while (check_count < ((phba->fc_ratov * 3) + 3) && | |
467 | vport->port_state > LPFC_VPORT_FAILED && | |
468 | vport->port_state < LPFC_VPORT_READY) { | |
469 | check_count++; | |
470 | msleep(1000); | |
471 | } | |
472 | if (vport->port_state > LPFC_VPORT_FAILED && | |
473 | vport->port_state < LPFC_VPORT_READY) | |
474 | return -EAGAIN; | |
475 | } | |
92d7f7b0 JS |
476 | /* |
477 | * This is a bit of a mess. We want to ensure the shost doesn't get | |
478 | * torn down until we're done with the embedded lpfc_vport structure. | |
479 | * | |
480 | * Beyond holding a reference for this function, we also need a | |
481 | * reference for outstanding I/O requests we schedule during delete | |
482 | * processing. But once we scsi_remove_host() we can no longer obtain | |
483 | * a reference through scsi_host_get(). | |
484 | * | |
485 | * So we take two references here. We release one reference at the | |
486 | * bottom of the function -- after delinking the vport. And we | |
487 | * release the other at the completion of the unreg_vpi that get's | |
488 | * initiated after we've disposed of all other resources associated | |
489 | * with the port. | |
490 | */ | |
491 | if (!scsi_host_get(shost) || !scsi_host_get(shost)) | |
492 | return VPORT_INVAL; | |
51ef4c26 | 493 | spin_lock_irq(&phba->hbalock); |
92d7f7b0 | 494 | vport->load_flag |= FC_UNLOADING; |
51ef4c26 | 495 | spin_unlock_irq(&phba->hbalock); |
92d7f7b0 | 496 | kfree(vport->vname); |
858c9f6c | 497 | lpfc_debugfs_terminate(vport); |
92d7f7b0 JS |
498 | fc_remove_host(lpfc_shost_from_vport(vport)); |
499 | scsi_remove_host(lpfc_shost_from_vport(vport)); | |
500 | ||
501 | ndlp = lpfc_findnode_did(phba->pport, Fabric_DID); | |
502 | if (ndlp && ndlp->nlp_state == NLP_STE_UNMAPPED_NODE && | |
7ee5d43e JS |
503 | phba->link_state >= LPFC_LINK_UP) { |
504 | if (vport->cfg_enable_da_id) { | |
505 | timeout = msecs_to_jiffies(phba->fc_ratov * 2000); | |
506 | if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0)) | |
507 | while (vport->ct_flags && timeout) | |
508 | timeout = schedule_timeout(timeout); | |
509 | else | |
510 | lpfc_printf_log(vport->phba, KERN_WARNING, | |
511 | LOG_VPORT, | |
512 | "1829 CT command failed to " | |
513 | "delete objects on fabric. \n"); | |
514 | } | |
92d7f7b0 JS |
515 | /* First look for the Fabric ndlp */ |
516 | ndlp = lpfc_findnode_did(vport, Fabric_DID); | |
517 | if (!ndlp) { | |
518 | /* Cannot find existing Fabric ndlp, allocate one */ | |
519 | ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); | |
520 | if (!ndlp) | |
521 | goto skip_logo; | |
522 | lpfc_nlp_init(vport, ndlp, Fabric_DID); | |
523 | } else { | |
524 | lpfc_dequeue_node(vport, ndlp); | |
525 | } | |
526 | vport->unreg_vpi_cmpl = VPORT_INVAL; | |
527 | timeout = msecs_to_jiffies(phba->fc_ratov * 2000); | |
528 | if (!lpfc_issue_els_npiv_logo(vport, ndlp)) | |
529 | while (vport->unreg_vpi_cmpl == VPORT_INVAL && timeout) | |
530 | timeout = schedule_timeout(timeout); | |
531 | } | |
532 | ||
533 | skip_logo: | |
534 | lpfc_sli_host_down(vport); | |
535 | ||
536 | list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { | |
537 | lpfc_disc_state_machine(vport, ndlp, NULL, | |
538 | NLP_EVT_DEVICE_RECOVERY); | |
539 | lpfc_disc_state_machine(vport, ndlp, NULL, | |
540 | NLP_EVT_DEVICE_RM); | |
541 | } | |
542 | ||
92d7f7b0 JS |
543 | lpfc_stop_vport_timers(vport); |
544 | lpfc_unreg_all_rpis(vport); | |
545 | lpfc_unreg_default_rpis(vport); | |
546 | /* | |
547 | * Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi) does the | |
548 | * scsi_host_put() to release the vport. | |
549 | */ | |
550 | lpfc_mbx_unreg_vpi(vport); | |
551 | ||
552 | lpfc_free_vpi(phba, vport->vpi); | |
553 | vport->work_port_events = 0; | |
554 | spin_lock_irq(&phba->hbalock); | |
555 | list_del_init(&vport->listentry); | |
556 | spin_unlock_irq(&phba->hbalock); | |
a58cbd52 JS |
557 | lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT, |
558 | "1828 Vport Deleted.\n"); | |
92d7f7b0 | 559 | scsi_host_put(shost); |
51ef4c26 | 560 | return VPORT_OK; |
92d7f7b0 JS |
561 | } |
562 | ||
92d7f7b0 JS |
563 | EXPORT_SYMBOL(lpfc_vport_create); |
564 | EXPORT_SYMBOL(lpfc_vport_delete); | |
549e55cd JS |
565 | |
566 | struct lpfc_vport ** | |
567 | lpfc_create_vport_work_array(struct lpfc_hba *phba) | |
568 | { | |
569 | struct lpfc_vport *port_iterator; | |
570 | struct lpfc_vport **vports; | |
571 | int index = 0; | |
572 | vports = kzalloc(LPFC_MAX_VPORTS * sizeof(struct lpfc_vport *), | |
573 | GFP_KERNEL); | |
574 | if (vports == NULL) | |
575 | return NULL; | |
576 | spin_lock_irq(&phba->hbalock); | |
577 | list_for_each_entry(port_iterator, &phba->port_list, listentry) { | |
e8b62011 | 578 | if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) { |
51ef4c26 | 579 | lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT, |
e8b62011 JS |
580 | "1801 Create vport work array FAILED: " |
581 | "cannot do scsi_host_get\n"); | |
549e55cd | 582 | continue; |
e8b62011 | 583 | } |
549e55cd JS |
584 | vports[index++] = port_iterator; |
585 | } | |
586 | spin_unlock_irq(&phba->hbalock); | |
587 | return vports; | |
588 | } | |
589 | ||
590 | void | |
591 | lpfc_destroy_vport_work_array(struct lpfc_vport **vports) | |
592 | { | |
593 | int i; | |
594 | if (vports == NULL) | |
595 | return; | |
596 | for (i=0; vports[i] != NULL && i < LPFC_MAX_VPORTS; i++) | |
597 | scsi_host_put(lpfc_shost_from_vport(vports[i])); | |
598 | kfree(vports); | |
599 | } |