1/*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term *
5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
7 * EMULEX and SLI are trademarks of Emulex. *
8 * www.broadcom.com *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
10 * *
11 * This program is free software; you can redistribute it and/or *
12 * modify it under the terms of version 2 of the GNU General *
13 * Public License as published by the Free Software Foundation. *
14 * This program is distributed in the hope that it will be useful. *
15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19 * TO BE LEGALLY INVALID. See the GNU General Public License for *
20 * more details, a copy of which can be found in the file COPYING *
21 * included with this package. *
22 ********************************************************************/
23#include <linux/pci.h>
24#include <linux/slab.h>
25#include <linux/interrupt.h>
26#include <linux/delay.h>
27#include <asm/unaligned.h>
28#include <linux/crc-t10dif.h>
29#include <net/checksum.h>
30
31#include <scsi/scsi.h>
32#include <scsi/scsi_device.h>
33#include <scsi/scsi_eh.h>
34#include <scsi/scsi_host.h>
35#include <scsi/scsi_tcq.h>
36#include <scsi/scsi_transport_fc.h>
37#include <scsi/fc/fc_fs.h>
38
39#include "lpfc_version.h"
40#include "lpfc_hw4.h"
41#include "lpfc_hw.h"
42#include "lpfc_sli.h"
43#include "lpfc_sli4.h"
44#include "lpfc_nl.h"
45#include "lpfc_disc.h"
46#include "lpfc.h"
47#include "lpfc_scsi.h"
48#include "lpfc_nvme.h"
49#include "lpfc_logmsg.h"
50#include "lpfc_crtn.h"
51#include "lpfc_vport.h"
52#include "lpfc_debugfs.h"
53
54static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *,
55 struct lpfc_async_xchg_ctx *,
56 dma_addr_t rspbuf,
57 uint16_t rspsize);
58static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
59 struct lpfc_async_xchg_ctx *);
60static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
61 struct lpfc_async_xchg_ctx *,
62 uint32_t, uint16_t);
63static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
64 struct lpfc_async_xchg_ctx *,
65 uint32_t, uint16_t);
66static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *,
67 struct lpfc_async_xchg_ctx *);
68static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *);
69
70static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf);
71
72static union lpfc_wqe128 lpfc_tsend_cmd_template;
73static union lpfc_wqe128 lpfc_treceive_cmd_template;
74static union lpfc_wqe128 lpfc_trsp_cmd_template;
75
76/* Setup WQE templates for NVME IOs */
77void
78lpfc_nvmet_cmd_template(void)
79{
80 union lpfc_wqe128 *wqe;
81
82 /* TSEND template */
83 wqe = &lpfc_tsend_cmd_template;
84 memset(wqe, 0, sizeof(union lpfc_wqe128));
85
86 /* Word 0, 1, 2 - BDE is variable */
87
88 /* Word 3 - payload_offset_len is zero */
89
90 /* Word 4 - relative_offset is variable */
91
92 /* Word 5 - is zero */
93
94 /* Word 6 - ctxt_tag, xri_tag is variable */
95
96 /* Word 7 - wqe_ar is variable */
97 bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);
98 bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, PARM_REL_OFF);
99 bf_set(wqe_class, &wqe->fcp_tsend.wqe_com, CLASS3);
100 bf_set(wqe_ct, &wqe->fcp_tsend.wqe_com, SLI4_CT_RPI);
101 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
102
103 /* Word 8 - abort_tag is variable */
104
105 /* Word 9 - reqtag, rcvoxid is variable */
106
107 /* Word 10 - wqes, xc is variable */
108 bf_set(wqe_xchg, &wqe->fcp_tsend.wqe_com, LPFC_NVME_XCHG);
109 bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
110 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
111 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1);
112 bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE);
113 bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com, LPFC_WQE_LENLOC_WORD12);
114
115 /* Word 11 - sup, irsp, irsplen is variable */
116 bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, FCP_COMMAND_TSEND);
117 bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
118 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
119 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
120 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
121 bf_set(wqe_pbde, &wqe->fcp_tsend.wqe_com, 0);
122
123 /* Word 12 - fcp_data_len is variable */
124
125 /* Word 13, 14, 15 - PBDE is zero */
126
127 /* TRECEIVE template */
128 wqe = &lpfc_treceive_cmd_template;
129 memset(wqe, 0, sizeof(union lpfc_wqe128));
130
131 /* Word 0, 1, 2 - BDE is variable */
132
133 /* Word 3 */
134 wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;
135
136 /* Word 4 - relative_offset is variable */
137
138 /* Word 5 - is zero */
139
140 /* Word 6 - ctxt_tag, xri_tag is variable */
141
142 /* Word 7 */
143 bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE);
144 bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF);
145 bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3);
146 bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI);
147 bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
148
149 /* Word 8 - abort_tag is variable */
150
151 /* Word 9 - reqtag, rcvoxid is variable */
152
153 /* Word 10 - xc is variable */
154 bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
155 bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
156 bf_set(wqe_xchg, &wqe->fcp_treceive.wqe_com, LPFC_NVME_XCHG);
157 bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ);
158 bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12);
159 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1);
160
161 /* Word 11 - pbde is variable */
162 bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE);
163 bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
164 bf_set(wqe_sup, &wqe->fcp_treceive.wqe_com, 0);
165 bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0);
166 bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0);
167 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 1);
168
169 /* Word 12 - fcp_data_len is variable */
170
171 /* Word 13, 14, 15 - PBDE is variable */
172
173 /* TRSP template */
174 wqe = &lpfc_trsp_cmd_template;
175 memset(wqe, 0, sizeof(union lpfc_wqe128));
176
177 /* Word 0, 1, 2 - BDE is variable */
178
179 /* Word 3 - response_len is variable */
180
181 /* Word 4, 5 - is zero */
182
183 /* Word 6 - ctxt_tag, xri_tag is variable */
184
185 /* Word 7 */
186 bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);
187 bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED);
188 bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3);
189 bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI);
190 bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */
191
192 /* Word 8 - abort_tag is variable */
193
194 /* Word 9 - reqtag is variable */
195
196 /* Word 10 wqes, xc is variable */
197 bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1);
198 bf_set(wqe_xchg, &wqe->fcp_trsp.wqe_com, LPFC_NVME_XCHG);
199 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
200 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0);
201 bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE);
202 bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3);
203
204 /* Word 11 irsp, irsplen is variable */
205 bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP);
206 bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
207 bf_set(wqe_sup, &wqe->fcp_trsp.wqe_com, 0);
208 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0);
209 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0);
210 bf_set(wqe_pbde, &wqe->fcp_trsp.wqe_com, 0);
211
212 /* Word 12, 13, 14, 15 - is zero */
213}
214
215#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
216static struct lpfc_async_xchg_ctx *
217lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri)
218{
219 struct lpfc_async_xchg_ctx *ctxp;
220 unsigned long iflag;
221 bool found = false;
222
223 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
224 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) {
225 if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
226 continue;
227
228 found = true;
229 break;
230 }
231 spin_unlock_irqrestore(lock: &phba->sli4_hba.t_active_list_lock, flags: iflag);
232 if (found)
233 return ctxp;
234
235 return NULL;
236}
237
238static struct lpfc_async_xchg_ctx *
239lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid)
240{
241 struct lpfc_async_xchg_ctx *ctxp;
242 unsigned long iflag;
243 bool found = false;
244
245 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
246 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) {
247 if (ctxp->oxid != oxid || ctxp->sid != sid)
248 continue;
249
250 found = true;
251 break;
252 }
253 spin_unlock_irqrestore(lock: &phba->sli4_hba.t_active_list_lock, flags: iflag);
254 if (found)
255 return ctxp;
256
257 return NULL;
258}
259#endif
260
261static void
262lpfc_nvmet_defer_release(struct lpfc_hba *phba,
263 struct lpfc_async_xchg_ctx *ctxp)
264{
265 lockdep_assert_held(&ctxp->ctxlock);
266
267 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
268 "6313 NVMET Defer ctx release oxid x%x flg x%x\n",
269 ctxp->oxid, ctxp->flag);
270
271 if (ctxp->flag & LPFC_NVME_CTX_RLS)
272 return;
273
274 ctxp->flag |= LPFC_NVME_CTX_RLS;
275 spin_lock(lock: &phba->sli4_hba.t_active_list_lock);
276 list_del(entry: &ctxp->list);
277 spin_unlock(lock: &phba->sli4_hba.t_active_list_lock);
278 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
279 list_add_tail(new: &ctxp->list, head: &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
280 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
281}
282
283/**
284 * __lpfc_nvme_xmt_ls_rsp_cmp - Generic completion handler for the
285 * transmission of an NVME LS response.
286 * @phba: Pointer to HBA context object.
287 * @cmdwqe: Pointer to driver command WQE object.
288 * @rspwqe: Pointer to driver response WQE object.
289 *
290 * The function is called from SLI ring event handler with no
291 * lock held. The function frees memory resources used for the command
292 * used to send the NVME LS RSP.
293 **/
294void
295__lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
296 struct lpfc_iocbq *rspwqe)
297{
298 struct lpfc_async_xchg_ctx *axchg = cmdwqe->context_un.axchg;
299 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
300 struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp;
301 uint32_t status, result;
302
303 status = bf_get(lpfc_wcqe_c_status, wcqe);
304 result = wcqe->parameter;
305
306 if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) {
307 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
308 "6410 NVMEx LS cmpl state mismatch IO x%x: "
309 "%d %d\n",
310 axchg->oxid, axchg->state, axchg->entry_cnt);
311 }
312
313 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x result x%x\n",
314 axchg->oxid, status, result);
315
316 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
317 "6038 NVMEx LS rsp cmpl: %d %d oxid x%x\n",
318 status, result, axchg->oxid);
319
320 lpfc_nlp_put(cmdwqe->ndlp);
321 cmdwqe->context_un.axchg = NULL;
322 cmdwqe->bpl_dmabuf = NULL;
323 lpfc_sli_release_iocbq(phba, cmdwqe);
324 ls_rsp->done(ls_rsp);
325 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
326 "6200 NVMEx LS rsp cmpl done status %d oxid x%x\n",
327 status, axchg->oxid);
328 kfree(objp: axchg);
329}
330
331/**
332 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response
333 * @phba: Pointer to HBA context object.
334 * @cmdwqe: Pointer to driver command WQE object.
335 * @rspwqe: Pointer to driver response WQE object.
336 *
337 * The function is called from SLI ring event handler with no
338 * lock held. This function is the completion handler for NVME LS commands
339 * The function updates any states and statistics, then calls the
340 * generic completion handler to free resources.
341 **/
342static void
343lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
344 struct lpfc_iocbq *rspwqe)
345{
346 struct lpfc_nvmet_tgtport *tgtp;
347 uint32_t status, result;
348 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
349
350 if (!phba->targetport)
351 goto finish;
352
353 status = bf_get(lpfc_wcqe_c_status, wcqe);
354 result = wcqe->parameter;
355
356 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
357 if (tgtp) {
358 if (status) {
359 atomic_inc(v: &tgtp->xmt_ls_rsp_error);
360 if (result == IOERR_ABORT_REQUESTED)
361 atomic_inc(v: &tgtp->xmt_ls_rsp_aborted);
362 if (bf_get(lpfc_wcqe_c_xb, wcqe))
363 atomic_inc(v: &tgtp->xmt_ls_rsp_xb_set);
364 } else {
365 atomic_inc(v: &tgtp->xmt_ls_rsp_cmpl);
366 }
367 }
368
369finish:
370 __lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, rspwqe);
371}
372
373/**
374 * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context
375 * @phba: HBA buffer is associated with
376 * @ctx_buf: ctx buffer context
377 *
378 * Description: Frees the given DMA buffer in the appropriate way given by
379 * reposting it to its associated RQ so it can be reused.
380 *
381 * Notes: Takes phba->hbalock. Can be called with or without other locks held.
382 *
383 * Returns: None
384 **/
385void
386lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
387{
388#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
389 struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
390 struct lpfc_nvmet_tgtport *tgtp;
391 struct fc_frame_header *fc_hdr;
392 struct rqb_dmabuf *nvmebuf;
393 struct lpfc_nvmet_ctx_info *infop;
394 uint32_t size, oxid, sid;
395 int cpu;
396 unsigned long iflag;
397
398 if (ctxp->state == LPFC_NVME_STE_FREE) {
399 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
400 "6411 NVMET free, already free IO x%x: %d %d\n",
401 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
402 }
403
404 if (ctxp->rqb_buffer) {
405 spin_lock_irqsave(&ctxp->ctxlock, iflag);
406 nvmebuf = ctxp->rqb_buffer;
407 /* check if freed in another path whilst acquiring lock */
408 if (nvmebuf) {
409 ctxp->rqb_buffer = NULL;
410 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
411 ctxp->flag &= ~LPFC_NVME_CTX_REUSE_WQ;
412 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
413 nvmebuf->hrq->rqbp->rqb_free_buffer(phba,
414 nvmebuf);
415 } else {
416 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
417 /* repost */
418 lpfc_rq_buf_free(phba, mp: &nvmebuf->hbuf);
419 }
420 } else {
421 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
422 }
423 }
424 ctxp->state = LPFC_NVME_STE_FREE;
425
426 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
427 if (phba->sli4_hba.nvmet_io_wait_cnt) {
428 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list,
429 nvmebuf, struct rqb_dmabuf,
430 hbuf.list);
431 phba->sli4_hba.nvmet_io_wait_cnt--;
432 spin_unlock_irqrestore(lock: &phba->sli4_hba.nvmet_io_wait_lock,
433 flags: iflag);
434
435 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
436 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
437 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
438 size = nvmebuf->bytes_recv;
439 sid = sli4_sid_from_fc_hdr(fc_hdr);
440
441 ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context;
442 ctxp->wqeq = NULL;
443 ctxp->offset = 0;
444 ctxp->phba = phba;
445 ctxp->size = size;
446 ctxp->oxid = oxid;
447 ctxp->sid = sid;
448 ctxp->state = LPFC_NVME_STE_RCV;
449 ctxp->entry_cnt = 1;
450 ctxp->flag = 0;
451 ctxp->ctxbuf = ctx_buf;
452 ctxp->rqb_buffer = (void *)nvmebuf;
453 spin_lock_init(&ctxp->ctxlock);
454
455#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
456 /* NOTE: isr time stamp is stale when context is re-assigned*/
457 if (ctxp->ts_isr_cmd) {
458 ctxp->ts_cmd_nvme = 0;
459 ctxp->ts_nvme_data = 0;
460 ctxp->ts_data_wqput = 0;
461 ctxp->ts_isr_data = 0;
462 ctxp->ts_data_nvme = 0;
463 ctxp->ts_nvme_status = 0;
464 ctxp->ts_status_wqput = 0;
465 ctxp->ts_isr_status = 0;
466 ctxp->ts_status_nvme = 0;
467 }
468#endif
469 atomic_inc(v: &tgtp->rcv_fcp_cmd_in);
470
471 /* Indicate that a replacement buffer has been posted */
472 spin_lock_irqsave(&ctxp->ctxlock, iflag);
473 ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ;
474 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
475
476 if (!queue_work(wq: phba->wq, work: &ctx_buf->defer_work)) {
477 atomic_inc(v: &tgtp->rcv_fcp_cmd_drop);
478 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
479 "6181 Unable to queue deferred work "
480 "for oxid x%x. "
481 "FCP Drop IO [x%x x%x x%x]\n",
482 ctxp->oxid,
483 atomic_read(&tgtp->rcv_fcp_cmd_in),
484 atomic_read(&tgtp->rcv_fcp_cmd_out),
485 atomic_read(&tgtp->xmt_fcp_release));
486
487 spin_lock_irqsave(&ctxp->ctxlock, iflag);
488 lpfc_nvmet_defer_release(phba, ctxp);
489 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
490 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
491 }
492 return;
493 }
494 spin_unlock_irqrestore(lock: &phba->sli4_hba.nvmet_io_wait_lock, flags: iflag);
495
496 /*
497 * Use the CPU context list, from the MRQ the IO was received on
498 * (ctxp->idx), to save context structure.
499 */
500 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
501 list_del_init(entry: &ctxp->list);
502 spin_unlock_irqrestore(lock: &phba->sli4_hba.t_active_list_lock, flags: iflag);
503 cpu = raw_smp_processor_id();
504 infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx);
505 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag);
506 list_add_tail(new: &ctx_buf->list, head: &infop->nvmet_ctx_list);
507 infop->nvmet_ctx_list_cnt++;
508 spin_unlock_irqrestore(lock: &infop->nvmet_ctx_list_lock, flags: iflag);
509#endif
510}
511
512#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
513static void
514lpfc_nvmet_ktime(struct lpfc_hba *phba,
515 struct lpfc_async_xchg_ctx *ctxp)
516{
517 uint64_t seg1, seg2, seg3, seg4, seg5;
518 uint64_t seg6, seg7, seg8, seg9, seg10;
519 uint64_t segsum;
520
521 if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme ||
522 !ctxp->ts_nvme_data || !ctxp->ts_data_wqput ||
523 !ctxp->ts_isr_data || !ctxp->ts_data_nvme ||
524 !ctxp->ts_nvme_status || !ctxp->ts_status_wqput ||
525 !ctxp->ts_isr_status || !ctxp->ts_status_nvme)
526 return;
527
528 if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd)
529 return;
530 if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme)
531 return;
532 if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data)
533 return;
534 if (ctxp->ts_nvme_data > ctxp->ts_data_wqput)
535 return;
536 if (ctxp->ts_data_wqput > ctxp->ts_isr_data)
537 return;
538 if (ctxp->ts_isr_data > ctxp->ts_data_nvme)
539 return;
540 if (ctxp->ts_data_nvme > ctxp->ts_nvme_status)
541 return;
542 if (ctxp->ts_nvme_status > ctxp->ts_status_wqput)
543 return;
544 if (ctxp->ts_status_wqput > ctxp->ts_isr_status)
545 return;
546 if (ctxp->ts_isr_status > ctxp->ts_status_nvme)
547 return;
548 /*
549 * Segment 1 - Time from FCP command received by MSI-X ISR
550 * to FCP command is passed to NVME Layer.
551 * Segment 2 - Time from FCP command payload handed
552 * off to NVME Layer to Driver receives a Command op
553 * from NVME Layer.
554 * Segment 3 - Time from Driver receives a Command op
555 * from NVME Layer to Command is put on WQ.
556 * Segment 4 - Time from Driver WQ put is done
557 * to MSI-X ISR for Command cmpl.
558 * Segment 5 - Time from MSI-X ISR for Command cmpl to
559 * Command cmpl is passed to NVME Layer.
560 * Segment 6 - Time from Command cmpl is passed to NVME
561 * Layer to Driver receives a RSP op from NVME Layer.
562 * Segment 7 - Time from Driver receives a RSP op from
563 * NVME Layer to WQ put is done on TRSP FCP Status.
564 * Segment 8 - Time from Driver WQ put is done on TRSP
565 * FCP Status to MSI-X ISR for TRSP cmpl.
566 * Segment 9 - Time from MSI-X ISR for TRSP cmpl to
567 * TRSP cmpl is passed to NVME Layer.
568 * Segment 10 - Time from FCP command received by
569 * MSI-X ISR to command is completed on wire.
570 * (Segments 1 thru 8) for READDATA / WRITEDATA
571 * (Segments 1 thru 4) for READDATA_RSP
572 */
573 seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd;
574 segsum = seg1;
575
576 seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd;
577 if (segsum > seg2)
578 return;
579 seg2 -= segsum;
580 segsum += seg2;
581
582 seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd;
583 if (segsum > seg3)
584 return;
585 seg3 -= segsum;
586 segsum += seg3;
587
588 seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd;
589 if (segsum > seg4)
590 return;
591 seg4 -= segsum;
592 segsum += seg4;
593
594 seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd;
595 if (segsum > seg5)
596 return;
597 seg5 -= segsum;
598 segsum += seg5;
599
600
601 /* For auto rsp commands seg6 thru seg10 will be 0 */
602 if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) {
603 seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd;
604 if (segsum > seg6)
605 return;
606 seg6 -= segsum;
607 segsum += seg6;
608
609 seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd;
610 if (segsum > seg7)
611 return;
612 seg7 -= segsum;
613 segsum += seg7;
614
615 seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd;
616 if (segsum > seg8)
617 return;
618 seg8 -= segsum;
619 segsum += seg8;
620
621 seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd;
622 if (segsum > seg9)
623 return;
624 seg9 -= segsum;
625 segsum += seg9;
626
627 if (ctxp->ts_isr_status < ctxp->ts_isr_cmd)
628 return;
629 seg10 = (ctxp->ts_isr_status -
630 ctxp->ts_isr_cmd);
631 } else {
632 if (ctxp->ts_isr_data < ctxp->ts_isr_cmd)
633 return;
634 seg6 = 0;
635 seg7 = 0;
636 seg8 = 0;
637 seg9 = 0;
638 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd);
639 }
640
641 phba->ktime_seg1_total += seg1;
642 if (seg1 < phba->ktime_seg1_min)
643 phba->ktime_seg1_min = seg1;
644 else if (seg1 > phba->ktime_seg1_max)
645 phba->ktime_seg1_max = seg1;
646
647 phba->ktime_seg2_total += seg2;
648 if (seg2 < phba->ktime_seg2_min)
649 phba->ktime_seg2_min = seg2;
650 else if (seg2 > phba->ktime_seg2_max)
651 phba->ktime_seg2_max = seg2;
652
653 phba->ktime_seg3_total += seg3;
654 if (seg3 < phba->ktime_seg3_min)
655 phba->ktime_seg3_min = seg3;
656 else if (seg3 > phba->ktime_seg3_max)
657 phba->ktime_seg3_max = seg3;
658
659 phba->ktime_seg4_total += seg4;
660 if (seg4 < phba->ktime_seg4_min)
661 phba->ktime_seg4_min = seg4;
662 else if (seg4 > phba->ktime_seg4_max)
663 phba->ktime_seg4_max = seg4;
664
665 phba->ktime_seg5_total += seg5;
666 if (seg5 < phba->ktime_seg5_min)
667 phba->ktime_seg5_min = seg5;
668 else if (seg5 > phba->ktime_seg5_max)
669 phba->ktime_seg5_max = seg5;
670
671 phba->ktime_data_samples++;
672 if (!seg6)
673 goto out;
674
675 phba->ktime_seg6_total += seg6;
676 if (seg6 < phba->ktime_seg6_min)
677 phba->ktime_seg6_min = seg6;
678 else if (seg6 > phba->ktime_seg6_max)
679 phba->ktime_seg6_max = seg6;
680
681 phba->ktime_seg7_total += seg7;
682 if (seg7 < phba->ktime_seg7_min)
683 phba->ktime_seg7_min = seg7;
684 else if (seg7 > phba->ktime_seg7_max)
685 phba->ktime_seg7_max = seg7;
686
687 phba->ktime_seg8_total += seg8;
688 if (seg8 < phba->ktime_seg8_min)
689 phba->ktime_seg8_min = seg8;
690 else if (seg8 > phba->ktime_seg8_max)
691 phba->ktime_seg8_max = seg8;
692
693 phba->ktime_seg9_total += seg9;
694 if (seg9 < phba->ktime_seg9_min)
695 phba->ktime_seg9_min = seg9;
696 else if (seg9 > phba->ktime_seg9_max)
697 phba->ktime_seg9_max = seg9;
698out:
699 phba->ktime_seg10_total += seg10;
700 if (seg10 < phba->ktime_seg10_min)
701 phba->ktime_seg10_min = seg10;
702 else if (seg10 > phba->ktime_seg10_max)
703 phba->ktime_seg10_max = seg10;
704 phba->ktime_status_samples++;
705}
706#endif
707
708/**
709 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response
710 * @phba: Pointer to HBA context object.
711 * @cmdwqe: Pointer to driver command WQE object.
712 * @rspwqe: Pointer to driver response WQE object.
713 *
714 * The function is called from SLI ring event handler with no
715 * lock held. This function is the completion handler for NVME FCP commands
716 * The function frees memory resources used for the NVME commands.
717 **/
718static void
719lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
720 struct lpfc_iocbq *rspwqe)
721{
722 struct lpfc_nvmet_tgtport *tgtp;
723 struct nvmefc_tgt_fcp_req *rsp;
724 struct lpfc_async_xchg_ctx *ctxp;
725 uint32_t status, result, op, logerr;
726 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
727#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
728 int id;
729#endif
730
731 ctxp = cmdwqe->context_un.axchg;
732 ctxp->flag &= ~LPFC_NVME_IO_INP;
733
734 rsp = &ctxp->hdlrctx.fcp_req;
735 op = rsp->op;
736
737 status = bf_get(lpfc_wcqe_c_status, wcqe);
738 result = wcqe->parameter;
739
740 if (phba->targetport)
741 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
742 else
743 tgtp = NULL;
744
745 lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n",
746 ctxp->oxid, op, status);
747
748 if (status) {
749 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
750 rsp->transferred_length = 0;
751 if (tgtp) {
752 atomic_inc(v: &tgtp->xmt_fcp_rsp_error);
753 if (result == IOERR_ABORT_REQUESTED)
754 atomic_inc(v: &tgtp->xmt_fcp_rsp_aborted);
755 }
756
757 logerr = LOG_NVME_IOERR;
758
759 /* pick up SLI4 exhange busy condition */
760 if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
761 ctxp->flag |= LPFC_NVME_XBUSY;
762 logerr |= LOG_NVME_ABTS;
763 if (tgtp)
764 atomic_inc(v: &tgtp->xmt_fcp_rsp_xb_set);
765
766 } else {
767 ctxp->flag &= ~LPFC_NVME_XBUSY;
768 }
769
770 lpfc_printf_log(phba, KERN_INFO, logerr,
771 "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x "
772 "XBUSY:x%x\n",
773 ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag,
774 status, result, ctxp->flag);
775
776 } else {
777 rsp->fcp_error = NVME_SC_SUCCESS;
778 if (op == NVMET_FCOP_RSP)
779 rsp->transferred_length = rsp->rsplen;
780 else
781 rsp->transferred_length = rsp->transfer_length;
782 if (tgtp)
783 atomic_inc(v: &tgtp->xmt_fcp_rsp_cmpl);
784 }
785
786 if ((op == NVMET_FCOP_READDATA_RSP) ||
787 (op == NVMET_FCOP_RSP)) {
788 /* Sanity check */
789 ctxp->state = LPFC_NVME_STE_DONE;
790 ctxp->entry_cnt++;
791
792#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
793 if (ctxp->ts_cmd_nvme) {
794 if (rsp->op == NVMET_FCOP_READDATA_RSP) {
795 ctxp->ts_isr_data =
796 cmdwqe->isr_timestamp;
797 ctxp->ts_data_nvme =
798 ktime_get_ns();
799 ctxp->ts_nvme_status =
800 ctxp->ts_data_nvme;
801 ctxp->ts_status_wqput =
802 ctxp->ts_data_nvme;
803 ctxp->ts_isr_status =
804 ctxp->ts_data_nvme;
805 ctxp->ts_status_nvme =
806 ctxp->ts_data_nvme;
807 } else {
808 ctxp->ts_isr_status =
809 cmdwqe->isr_timestamp;
810 ctxp->ts_status_nvme =
811 ktime_get_ns();
812 }
813 }
814#endif
815 rsp->done(rsp);
816#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
817 if (ctxp->ts_cmd_nvme)
818 lpfc_nvmet_ktime(phba, ctxp);
819#endif
820 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */
821 } else {
822 ctxp->entry_cnt++;
823 memset_startat(cmdwqe, 0, cmd_flag);
824#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
825 if (ctxp->ts_cmd_nvme) {
826 ctxp->ts_isr_data = cmdwqe->isr_timestamp;
827 ctxp->ts_data_nvme = ktime_get_ns();
828 }
829#endif
830 rsp->done(rsp);
831 }
832#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
833 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
834 id = raw_smp_processor_id();
835 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
836 if (ctxp->cpu != id)
837 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
838 "6704 CPU Check cmdcmpl: "
839 "cpu %d expect %d\n",
840 id, ctxp->cpu);
841 }
842#endif
843}
844
845/**
846 * __lpfc_nvme_xmt_ls_rsp - Generic service routine to issue transmit
847 * an NVME LS rsp for a prior NVME LS request that was received.
848 * @axchg: pointer to exchange context for the NVME LS request the response
849 * is for.
850 * @ls_rsp: pointer to the transport LS RSP that is to be sent
851 * @xmt_ls_rsp_cmp: completion routine to call upon RSP transmit done
852 *
853 * This routine is used to format and send a WQE to transmit a NVME LS
854 * Response. The response is for a prior NVME LS request that was
855 * received and posted to the transport.
856 *
857 * Returns:
858 * 0 : if response successfully transmit
859 * non-zero : if response failed to transmit, of the form -Exxx.
860 **/
861int
862__lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg,
863 struct nvmefc_ls_rsp *ls_rsp,
864 void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba,
865 struct lpfc_iocbq *cmdwqe,
866 struct lpfc_iocbq *rspwqe))
867{
868 struct lpfc_hba *phba = axchg->phba;
869 struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer;
870 struct lpfc_iocbq *nvmewqeq;
871 struct lpfc_dmabuf dmabuf;
872 struct ulp_bde64 bpl;
873 int rc;
874
875 if (phba->pport->load_flag & FC_UNLOADING)
876 return -ENODEV;
877
878 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
879 "6023 NVMEx LS rsp oxid x%x\n", axchg->oxid);
880
881 if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) {
882 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
883 "6412 NVMEx LS rsp state mismatch "
884 "oxid x%x: %d %d\n",
885 axchg->oxid, axchg->state, axchg->entry_cnt);
886 return -EALREADY;
887 }
888 axchg->state = LPFC_NVME_STE_LS_RSP;
889 axchg->entry_cnt++;
890
891 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, rspbuf: ls_rsp->rspdma,
892 rspsize: ls_rsp->rsplen);
893 if (nvmewqeq == NULL) {
894 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
895 "6150 NVMEx LS Drop Rsp x%x: Prep\n",
896 axchg->oxid);
897 rc = -ENOMEM;
898 goto out_free_buf;
899 }
900
901 /* Save numBdes for bpl2sgl */
902 nvmewqeq->num_bdes = 1;
903 nvmewqeq->hba_wqidx = 0;
904 nvmewqeq->bpl_dmabuf = &dmabuf;
905 dmabuf.virt = &bpl;
906 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
907 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
908 bpl.tus.f.bdeSize = ls_rsp->rsplen;
909 bpl.tus.f.bdeFlags = 0;
910 bpl.tus.w = le32_to_cpu(bpl.tus.w);
911 /*
912 * Note: although we're using stack space for the dmabuf, the
913 * call to lpfc_sli4_issue_wqe is synchronous, so it will not
914 * be referenced after it returns back to this routine.
915 */
916
917 nvmewqeq->cmd_cmpl = xmt_ls_rsp_cmp;
918 nvmewqeq->context_un.axchg = axchg;
919
920 lpfc_nvmeio_data(phba, "NVMEx LS RSP: xri x%x wqidx x%x len x%x\n",
921 axchg->oxid, nvmewqeq->hba_wqidx, ls_rsp->rsplen);
922
923 rc = lpfc_sli4_issue_wqe(phba, qp: axchg->hdwq, pwqe: nvmewqeq);
924
925 /* clear to be sure there's no reference */
926 nvmewqeq->bpl_dmabuf = NULL;
927
928 if (rc == WQE_SUCCESS) {
929 /*
930 * Okay to repost buffer here, but wait till cmpl
931 * before freeing ctxp and iocbq.
932 */
933 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
934 return 0;
935 }
936
937 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
938 "6151 NVMEx LS RSP x%x: failed to transmit %d\n",
939 axchg->oxid, rc);
940
941 rc = -ENXIO;
942
943 lpfc_nlp_put(nvmewqeq->ndlp);
944
945out_free_buf:
946 /* Give back resources */
947 lpfc_in_buf_free(phba, &nvmebuf->dbuf);
948
949 /*
950 * As transport doesn't track completions of responses, if the rsp
951 * fails to send, the transport will effectively ignore the rsp
952 * and consider the LS done. However, the driver has an active
953 * exchange open for the LS - so be sure to abort the exchange
954 * if the response isn't sent.
955 */
956 lpfc_nvme_unsol_ls_issue_abort(phba, ctxp: axchg, sid: axchg->sid, xri: axchg->oxid);
957 return rc;
958}
959
960/**
961 * lpfc_nvmet_xmt_ls_rsp - Transmit NVME LS response
962 * @tgtport: pointer to target port that NVME LS is to be transmit from.
963 * @ls_rsp: pointer to the transport LS RSP that is to be sent
964 *
965 * Driver registers this routine to transmit responses for received NVME
966 * LS requests.
967 *
968 * This routine is used to format and send a WQE to transmit a NVME LS
969 * Response. The ls_rsp is used to reverse-map the LS to the original
970 * NVME LS request sequence, which provides addressing information for
971 * the remote port the LS to be sent to, as well as the exchange id
972 * that is the LS is bound to.
973 *
974 * Returns:
975 * 0 : if response successfully transmit
976 * non-zero : if response failed to transmit, of the form -Exxx.
977 **/
978static int
979lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
980 struct nvmefc_ls_rsp *ls_rsp)
981{
982 struct lpfc_async_xchg_ctx *axchg =
983 container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp);
984 struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
985 int rc;
986
987 if (axchg->phba->pport->load_flag & FC_UNLOADING)
988 return -ENODEV;
989
990 rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, xmt_ls_rsp_cmp: lpfc_nvmet_xmt_ls_rsp_cmp);
991
992 if (rc) {
993 atomic_inc(v: &nvmep->xmt_ls_drop);
994 /*
995 * unless the failure is due to having already sent
996 * the response, an abort will be generated for the
997 * exchange if the rsp can't be sent.
998 */
999 if (rc != -EALREADY)
1000 atomic_inc(v: &nvmep->xmt_ls_abort);
1001 return rc;
1002 }
1003
1004 atomic_inc(v: &nvmep->xmt_ls_rsp);
1005 return 0;
1006}
1007
1008static int
1009lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport,
1010 struct nvmefc_tgt_fcp_req *rsp)
1011{
1012 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
1013 struct lpfc_async_xchg_ctx *ctxp =
1014 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1015 struct lpfc_hba *phba = ctxp->phba;
1016 struct lpfc_queue *wq;
1017 struct lpfc_iocbq *nvmewqeq;
1018 struct lpfc_sli_ring *pring;
1019 unsigned long iflags;
1020 int rc;
1021#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1022 int id;
1023#endif
1024
1025 if (phba->pport->load_flag & FC_UNLOADING) {
1026 rc = -ENODEV;
1027 goto aerr;
1028 }
1029
1030#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1031 if (ctxp->ts_cmd_nvme) {
1032 if (rsp->op == NVMET_FCOP_RSP)
1033 ctxp->ts_nvme_status = ktime_get_ns();
1034 else
1035 ctxp->ts_nvme_data = ktime_get_ns();
1036 }
1037
1038 /* Setup the hdw queue if not already set */
1039 if (!ctxp->hdwq)
1040 ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid];
1041
1042 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
1043 id = raw_smp_processor_id();
1044 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io);
1045 if (rsp->hwqid != id)
1046 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
1047 "6705 CPU Check OP: "
1048 "cpu %d expect %d\n",
1049 id, rsp->hwqid);
1050 ctxp->cpu = id; /* Setup cpu for cmpl check */
1051 }
1052#endif
1053
1054 /* Sanity check */
1055 if ((ctxp->flag & LPFC_NVME_ABTS_RCV) ||
1056 (ctxp->state == LPFC_NVME_STE_ABORT)) {
1057 atomic_inc(v: &lpfc_nvmep->xmt_fcp_drop);
1058 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1059 "6102 IO oxid x%x aborted\n",
1060 ctxp->oxid);
1061 rc = -ENXIO;
1062 goto aerr;
1063 }
1064
1065 nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp);
1066 if (nvmewqeq == NULL) {
1067 atomic_inc(v: &lpfc_nvmep->xmt_fcp_drop);
1068 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1069 "6152 FCP Drop IO x%x: Prep\n",
1070 ctxp->oxid);
1071 rc = -ENXIO;
1072 goto aerr;
1073 }
1074
1075 nvmewqeq->cmd_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
1076 nvmewqeq->context_un.axchg = ctxp;
1077 nvmewqeq->cmd_flag |= LPFC_IO_NVMET;
1078 ctxp->wqeq->hba_wqidx = rsp->hwqid;
1079
1080 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
1081 ctxp->oxid, rsp->op, rsp->rsplen);
1082
1083 ctxp->flag |= LPFC_NVME_IO_INP;
1084 rc = lpfc_sli4_issue_wqe(phba, qp: ctxp->hdwq, pwqe: nvmewqeq);
1085 if (rc == WQE_SUCCESS) {
1086#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1087 if (!ctxp->ts_cmd_nvme)
1088 return 0;
1089 if (rsp->op == NVMET_FCOP_RSP)
1090 ctxp->ts_status_wqput = ktime_get_ns();
1091 else
1092 ctxp->ts_data_wqput = ktime_get_ns();
1093#endif
1094 return 0;
1095 }
1096
1097 if (rc == -EBUSY) {
1098 /*
1099 * WQ was full, so queue nvmewqeq to be sent after
1100 * WQE release CQE
1101 */
1102 ctxp->flag |= LPFC_NVME_DEFER_WQFULL;
1103 wq = ctxp->hdwq->io_wq;
1104 pring = wq->pring;
1105 spin_lock_irqsave(&pring->ring_lock, iflags);
1106 list_add_tail(new: &nvmewqeq->list, head: &wq->wqfull_list);
1107 wq->q_flag |= HBA_NVMET_WQFULL;
1108 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
1109 atomic_inc(v: &lpfc_nvmep->defer_wqfull);
1110 return 0;
1111 }
1112
1113 /* Give back resources */
1114 atomic_inc(v: &lpfc_nvmep->xmt_fcp_drop);
1115 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1116 "6153 FCP Drop IO x%x: Issue: %d\n",
1117 ctxp->oxid, rc);
1118
1119 ctxp->wqeq->hba_wqidx = 0;
1120 nvmewqeq->context_un.axchg = NULL;
1121 nvmewqeq->bpl_dmabuf = NULL;
1122 rc = -EBUSY;
1123aerr:
1124 return rc;
1125}
1126
1127static void
1128lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
1129{
1130 struct lpfc_nvmet_tgtport *tport = targetport->private;
1131
1132 /* release any threads waiting for the unreg to complete */
1133 if (tport->phba->targetport)
1134 complete(tport->tport_unreg_cmp);
1135}
1136
1137static void
1138lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
1139 struct nvmefc_tgt_fcp_req *req)
1140{
1141 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
1142 struct lpfc_async_xchg_ctx *ctxp =
1143 container_of(req, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1144 struct lpfc_hba *phba = ctxp->phba;
1145 struct lpfc_queue *wq;
1146 unsigned long flags;
1147
1148 if (phba->pport->load_flag & FC_UNLOADING)
1149 return;
1150
1151 if (!ctxp->hdwq)
1152 ctxp->hdwq = &phba->sli4_hba.hdwq[0];
1153
1154 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1155 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n",
1156 ctxp->oxid, ctxp->flag, ctxp->state);
1157
1158 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n",
1159 ctxp->oxid, ctxp->flag, ctxp->state);
1160
1161 atomic_inc(v: &lpfc_nvmep->xmt_fcp_abort);
1162
1163 spin_lock_irqsave(&ctxp->ctxlock, flags);
1164
1165 /* Since iaab/iaar are NOT set, we need to check
1166 * if the firmware is in process of aborting IO
1167 */
1168 if (ctxp->flag & (LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP)) {
1169 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
1170 return;
1171 }
1172 ctxp->flag |= LPFC_NVME_ABORT_OP;
1173
1174 if (ctxp->flag & LPFC_NVME_DEFER_WQFULL) {
1175 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
1176 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1177 ctxp->oxid);
1178 wq = ctxp->hdwq->io_wq;
1179 lpfc_nvmet_wqfull_flush(phba, wq, ctxp);
1180 return;
1181 }
1182 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
1183
1184 /* A state of LPFC_NVME_STE_RCV means we have just received
1185 * the NVME command and have not started processing it.
1186 * (by issuing any IO WQEs on this exchange yet)
1187 */
1188 if (ctxp->state == LPFC_NVME_STE_RCV)
1189 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1190 ctxp->oxid);
1191 else
1192 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1193 ctxp->oxid);
1194}
1195
1196static void
1197lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
1198 struct nvmefc_tgt_fcp_req *rsp)
1199{
1200 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
1201 struct lpfc_async_xchg_ctx *ctxp =
1202 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1203 struct lpfc_hba *phba = ctxp->phba;
1204 unsigned long flags;
1205 bool aborting = false;
1206
1207 spin_lock_irqsave(&ctxp->ctxlock, flags);
1208 if (ctxp->flag & LPFC_NVME_XBUSY)
1209 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
1210 "6027 NVMET release with XBUSY flag x%x"
1211 " oxid x%x\n",
1212 ctxp->flag, ctxp->oxid);
1213 else if (ctxp->state != LPFC_NVME_STE_DONE &&
1214 ctxp->state != LPFC_NVME_STE_ABORT)
1215 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1216 "6413 NVMET release bad state %d %d oxid x%x\n",
1217 ctxp->state, ctxp->entry_cnt, ctxp->oxid);
1218
1219 if ((ctxp->flag & LPFC_NVME_ABORT_OP) ||
1220 (ctxp->flag & LPFC_NVME_XBUSY)) {
1221 aborting = true;
1222 /* let the abort path do the real release */
1223 lpfc_nvmet_defer_release(phba, ctxp);
1224 }
1225 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
1226
1227 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid,
1228 ctxp->state, aborting);
1229
1230 atomic_inc(v: &lpfc_nvmep->xmt_fcp_release);
1231 ctxp->flag &= ~LPFC_NVME_TNOTIFY;
1232
1233 if (aborting)
1234 return;
1235
1236 lpfc_nvmet_ctxbuf_post(phba, ctx_buf: ctxp->ctxbuf);
1237}
1238
1239static void
1240lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
1241 struct nvmefc_tgt_fcp_req *rsp)
1242{
1243 struct lpfc_nvmet_tgtport *tgtp;
1244 struct lpfc_async_xchg_ctx *ctxp =
1245 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1246 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
1247 struct lpfc_hba *phba = ctxp->phba;
1248 unsigned long iflag;
1249
1250
1251 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n",
1252 ctxp->oxid, ctxp->size, raw_smp_processor_id());
1253
1254 if (!nvmebuf) {
1255 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
1256 "6425 Defer rcv: no buffer oxid x%x: "
1257 "flg %x ste %x\n",
1258 ctxp->oxid, ctxp->flag, ctxp->state);
1259 return;
1260 }
1261
1262 tgtp = phba->targetport->private;
1263 if (tgtp)
1264 atomic_inc(v: &tgtp->rcv_fcp_cmd_defer);
1265
1266 /* Free the nvmebuf since a new buffer already replaced it */
1267 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
1268 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1269 ctxp->rqb_buffer = NULL;
1270 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1271}
1272
1273/**
1274 * lpfc_nvmet_ls_req_cmp - completion handler for a nvme ls request
1275 * @phba: Pointer to HBA context object
1276 * @cmdwqe: Pointer to driver command WQE object.
1277 * @rspwqe: Pointer to driver response WQE object.
1278 *
1279 * This function is the completion handler for NVME LS requests.
1280 * The function updates any states and statistics, then calls the
1281 * generic completion handler to finish completion of the request.
1282 **/
1283static void
1284lpfc_nvmet_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
1285 struct lpfc_iocbq *rspwqe)
1286{
1287 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
1288 __lpfc_nvme_ls_req_cmp(phba, vport: cmdwqe->vport, cmdwqe, wcqe);
1289}
1290
1291/**
1292 * lpfc_nvmet_ls_req - Issue an Link Service request
1293 * @targetport: pointer to target instance registered with nvmet transport.
1294 * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv.
1295 * Driver sets this value to the ndlp pointer.
1296 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS
1297 *
1298 * Driver registers this routine to handle any link service request
1299 * from the nvme_fc transport to a remote nvme-aware port.
1300 *
1301 * Return value :
1302 * 0 - Success
1303 * non-zero: various error codes, in form of -Exxx
1304 **/
1305static int
1306lpfc_nvmet_ls_req(struct nvmet_fc_target_port *targetport,
1307 void *hosthandle,
1308 struct nvmefc_ls_req *pnvme_lsreq)
1309{
1310 struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private;
1311 struct lpfc_hba *phba;
1312 struct lpfc_nodelist *ndlp;
1313 int ret;
1314 u32 hstate;
1315
1316 if (!lpfc_nvmet)
1317 return -EINVAL;
1318
1319 phba = lpfc_nvmet->phba;
1320 if (phba->pport->load_flag & FC_UNLOADING)
1321 return -EINVAL;
1322
1323 hstate = atomic_read(v: &lpfc_nvmet->state);
1324 if (hstate == LPFC_NVMET_INV_HOST_ACTIVE)
1325 return -EACCES;
1326
1327 ndlp = (struct lpfc_nodelist *)hosthandle;
1328
1329 ret = __lpfc_nvme_ls_req(vport: phba->pport, ndlp, pnvme_lsreq,
1330 gen_req_cmp: lpfc_nvmet_ls_req_cmp);
1331
1332 return ret;
1333}
1334
1335/**
1336 * lpfc_nvmet_ls_abort - Abort a prior NVME LS request
1337 * @targetport: Transport targetport, that LS was issued from.
1338 * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv.
1339 * Driver sets this value to the ndlp pointer.
1340 * @pnvme_lsreq: the transport nvme_ls_req structure for LS to be aborted
1341 *
1342 * Driver registers this routine to abort an NVME LS request that is
1343 * in progress (from the transports perspective).
1344 **/
1345static void
1346lpfc_nvmet_ls_abort(struct nvmet_fc_target_port *targetport,
1347 void *hosthandle,
1348 struct nvmefc_ls_req *pnvme_lsreq)
1349{
1350 struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private;
1351 struct lpfc_hba *phba;
1352 struct lpfc_nodelist *ndlp;
1353 int ret;
1354
1355 phba = lpfc_nvmet->phba;
1356 if (phba->pport->load_flag & FC_UNLOADING)
1357 return;
1358
1359 ndlp = (struct lpfc_nodelist *)hosthandle;
1360
1361 ret = __lpfc_nvme_ls_abort(vport: phba->pport, ndlp, pnvme_lsreq);
1362 if (!ret)
1363 atomic_inc(v: &lpfc_nvmet->xmt_ls_abort);
1364}
1365
1366static void
1367lpfc_nvmet_host_release(void *hosthandle)
1368{
1369 struct lpfc_nodelist *ndlp = hosthandle;
1370 struct lpfc_hba *phba = ndlp->phba;
1371 struct lpfc_nvmet_tgtport *tgtp;
1372
1373 if (!phba->targetport || !phba->targetport->private)
1374 return;
1375
1376 lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
1377 "6202 NVMET XPT releasing hosthandle x%px "
1378 "DID x%x xflags x%x refcnt %d\n",
1379 hosthandle, ndlp->nlp_DID, ndlp->fc4_xpt_flags,
1380 kref_read(&ndlp->kref));
1381 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1382 spin_lock_irq(lock: &ndlp->lock);
1383 ndlp->fc4_xpt_flags &= ~NLP_XPT_HAS_HH;
1384 spin_unlock_irq(lock: &ndlp->lock);
1385 lpfc_nlp_put(ndlp);
1386 atomic_set(v: &tgtp->state, i: 0);
1387}
1388
1389static void
1390lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport)
1391{
1392 struct lpfc_nvmet_tgtport *tgtp;
1393 struct lpfc_hba *phba;
1394 uint32_t rc;
1395
1396 tgtp = tgtport->private;
1397 phba = tgtp->phba;
1398
1399 rc = lpfc_issue_els_rscn(vport: phba->pport, retry: 0);
1400 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1401 "6420 NVMET subsystem change: Notification %s\n",
1402 (rc) ? "Failed" : "Sent");
1403}
1404
1405static struct nvmet_fc_target_template lpfc_tgttemplate = {
1406 .targetport_delete = lpfc_nvmet_targetport_delete,
1407 .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp,
1408 .fcp_op = lpfc_nvmet_xmt_fcp_op,
1409 .fcp_abort = lpfc_nvmet_xmt_fcp_abort,
1410 .fcp_req_release = lpfc_nvmet_xmt_fcp_release,
1411 .defer_rcv = lpfc_nvmet_defer_rcv,
1412 .discovery_event = lpfc_nvmet_discovery_event,
1413 .ls_req = lpfc_nvmet_ls_req,
1414 .ls_abort = lpfc_nvmet_ls_abort,
1415 .host_release = lpfc_nvmet_host_release,
1416
1417 .max_hw_queues = 1,
1418 .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
1419 .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS,
1420 .dma_boundary = 0xFFFFFFFF,
1421
1422 /* optional features */
1423 .target_features = 0,
1424 /* sizes of additional private data for data structures */
1425 .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport),
1426 .lsrqst_priv_sz = 0,
1427};
1428
1429static void
1430__lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba,
1431 struct lpfc_nvmet_ctx_info *infop)
1432{
1433 struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf;
1434 unsigned long flags;
1435
1436 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags);
1437 list_for_each_entry_safe(ctx_buf, next_ctx_buf,
1438 &infop->nvmet_ctx_list, list) {
1439 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
1440 list_del_init(entry: &ctx_buf->list);
1441 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
1442
1443 spin_lock(lock: &phba->hbalock);
1444 __lpfc_clear_active_sglq(phba, xri: ctx_buf->sglq->sli4_lxritag);
1445 spin_unlock(lock: &phba->hbalock);
1446
1447 ctx_buf->sglq->state = SGL_FREED;
1448 ctx_buf->sglq->ndlp = NULL;
1449
1450 spin_lock(lock: &phba->sli4_hba.sgl_list_lock);
1451 list_add_tail(new: &ctx_buf->sglq->list,
1452 head: &phba->sli4_hba.lpfc_nvmet_sgl_list);
1453 spin_unlock(lock: &phba->sli4_hba.sgl_list_lock);
1454
1455 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
1456 kfree(objp: ctx_buf->context);
1457 }
1458 spin_unlock_irqrestore(lock: &infop->nvmet_ctx_list_lock, flags);
1459}
1460
1461static void
1462lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba)
1463{
1464 struct lpfc_nvmet_ctx_info *infop;
1465 int i, j;
1466
1467 /* The first context list, MRQ 0 CPU 0 */
1468 infop = phba->sli4_hba.nvmet_ctx_info;
1469 if (!infop)
1470 return;
1471
1472 /* Cycle the entire CPU context list for every MRQ */
1473 for (i = 0; i < phba->cfg_nvmet_mrq; i++) {
1474 for_each_present_cpu(j) {
1475 infop = lpfc_get_ctx_list(phba, j, i);
1476 __lpfc_nvmet_clean_io_for_cpu(phba, infop);
1477 }
1478 }
1479 kfree(objp: phba->sli4_hba.nvmet_ctx_info);
1480 phba->sli4_hba.nvmet_ctx_info = NULL;
1481}
1482
1483static int
1484lpfc_nvmet_setup_io_context(struct lpfc_hba *phba)
1485{
1486 struct lpfc_nvmet_ctxbuf *ctx_buf;
1487 struct lpfc_iocbq *nvmewqe;
1488 union lpfc_wqe128 *wqe;
1489 struct lpfc_nvmet_ctx_info *last_infop;
1490 struct lpfc_nvmet_ctx_info *infop;
1491 int i, j, idx, cpu;
1492
1493 lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
1494 "6403 Allocate NVMET resources for %d XRIs\n",
1495 phba->sli4_hba.nvmet_xri_cnt);
1496
1497 phba->sli4_hba.nvmet_ctx_info = kcalloc(
1498 n: phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq,
1499 size: sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL);
1500 if (!phba->sli4_hba.nvmet_ctx_info) {
1501 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1502 "6419 Failed allocate memory for "
1503 "nvmet context lists\n");
1504 return -ENOMEM;
1505 }
1506
1507 /*
1508 * Assuming X CPUs in the system, and Y MRQs, allocate some
1509 * lpfc_nvmet_ctx_info structures as follows:
1510 *
1511 * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0
1512 * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1
1513 * ...
1514 * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY
1515 *
1516 * Each line represents a MRQ "silo" containing an entry for
1517 * every CPU.
1518 *
1519 * MRQ X is initially assumed to be associated with CPU X, thus
1520 * contexts are initially distributed across all MRQs using
1521 * the MRQ index (N) as follows cpuN/mrqN. When contexts are
1522 * freed, the are freed to the MRQ silo based on the CPU number
1523 * of the IO completion. Thus a context that was allocated for MRQ A
1524 * whose IO completed on CPU B will be freed to cpuB/mrqA.
1525 */
1526 for_each_possible_cpu(i) {
1527 for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
1528 infop = lpfc_get_ctx_list(phba, i, j);
1529 INIT_LIST_HEAD(list: &infop->nvmet_ctx_list);
1530 spin_lock_init(&infop->nvmet_ctx_list_lock);
1531 infop->nvmet_ctx_list_cnt = 0;
1532 }
1533 }
1534
1535 /*
1536 * Setup the next CPU context info ptr for each MRQ.
1537 * MRQ 0 will cycle thru CPUs 0 - X separately from
1538 * MRQ 1 cycling thru CPUs 0 - X, and so on.
1539 */
1540 for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
1541 last_infop = lpfc_get_ctx_list(phba,
1542 cpumask_first(cpu_present_mask),
1543 j);
1544 for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) {
1545 infop = lpfc_get_ctx_list(phba, i, j);
1546 infop->nvmet_ctx_next_cpu = last_infop;
1547 last_infop = infop;
1548 }
1549 }
1550
1551 /* For all nvmet xris, allocate resources needed to process a
1552 * received command on a per xri basis.
1553 */
1554 idx = 0;
1555 cpu = cpumask_first(cpu_present_mask);
1556 for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) {
1557 ctx_buf = kzalloc(size: sizeof(*ctx_buf), GFP_KERNEL);
1558 if (!ctx_buf) {
1559 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1560 "6404 Ran out of memory for NVMET\n");
1561 return -ENOMEM;
1562 }
1563
1564 ctx_buf->context = kzalloc(size: sizeof(*ctx_buf->context),
1565 GFP_KERNEL);
1566 if (!ctx_buf->context) {
1567 kfree(objp: ctx_buf);
1568 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1569 "6405 Ran out of NVMET "
1570 "context memory\n");
1571 return -ENOMEM;
1572 }
1573 ctx_buf->context->ctxbuf = ctx_buf;
1574 ctx_buf->context->state = LPFC_NVME_STE_FREE;
1575
1576 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba);
1577 if (!ctx_buf->iocbq) {
1578 kfree(objp: ctx_buf->context);
1579 kfree(objp: ctx_buf);
1580 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1581 "6406 Ran out of NVMET iocb/WQEs\n");
1582 return -ENOMEM;
1583 }
1584 ctx_buf->iocbq->cmd_flag = LPFC_IO_NVMET;
1585 nvmewqe = ctx_buf->iocbq;
1586 wqe = &nvmewqe->wqe;
1587
1588 /* Initialize WQE */
1589 memset(wqe, 0, sizeof(union lpfc_wqe));
1590
1591 ctx_buf->iocbq->cmd_dmabuf = NULL;
1592 spin_lock(lock: &phba->sli4_hba.sgl_list_lock);
1593 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, piocbq: ctx_buf->iocbq);
1594 spin_unlock(lock: &phba->sli4_hba.sgl_list_lock);
1595 if (!ctx_buf->sglq) {
1596 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
1597 kfree(objp: ctx_buf->context);
1598 kfree(objp: ctx_buf);
1599 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1600 "6407 Ran out of NVMET XRIs\n");
1601 return -ENOMEM;
1602 }
1603 INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work);
1604
1605 /*
1606 * Add ctx to MRQidx context list. Our initial assumption
1607 * is MRQidx will be associated with CPUidx. This association
1608 * can change on the fly.
1609 */
1610 infop = lpfc_get_ctx_list(phba, cpu, idx);
1611 spin_lock(lock: &infop->nvmet_ctx_list_lock);
1612 list_add_tail(new: &ctx_buf->list, head: &infop->nvmet_ctx_list);
1613 infop->nvmet_ctx_list_cnt++;
1614 spin_unlock(lock: &infop->nvmet_ctx_list_lock);
1615
1616 /* Spread ctx structures evenly across all MRQs */
1617 idx++;
1618 if (idx >= phba->cfg_nvmet_mrq) {
1619 idx = 0;
1620 cpu = cpumask_first(cpu_present_mask);
1621 continue;
1622 }
1623 cpu = lpfc_next_present_cpu(n: cpu);
1624 }
1625
1626 for_each_present_cpu(i) {
1627 for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
1628 infop = lpfc_get_ctx_list(phba, i, j);
1629 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
1630 "6408 TOTAL NVMET ctx for CPU %d "
1631 "MRQ %d: cnt %d nextcpu x%px\n",
1632 i, j, infop->nvmet_ctx_list_cnt,
1633 infop->nvmet_ctx_next_cpu);
1634 }
1635 }
1636 return 0;
1637}
1638
1639int
1640lpfc_nvmet_create_targetport(struct lpfc_hba *phba)
1641{
1642 struct lpfc_vport *vport = phba->pport;
1643 struct lpfc_nvmet_tgtport *tgtp;
1644 struct nvmet_fc_port_info pinfo;
1645 int error;
1646
1647 if (phba->targetport)
1648 return 0;
1649
1650 error = lpfc_nvmet_setup_io_context(phba);
1651 if (error)
1652 return error;
1653
1654 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info));
1655 pinfo.node_name = wwn_to_u64(wwn: vport->fc_nodename.u.wwn);
1656 pinfo.port_name = wwn_to_u64(wwn: vport->fc_portname.u.wwn);
1657 pinfo.port_id = vport->fc_myDID;
1658
1659 /* We need to tell the transport layer + 1 because it takes page
1660 * alignment into account. When space for the SGL is allocated we
1661 * allocate + 3, one for cmd, one for rsp and one for this alignment
1662 */
1663 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
1664 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue;
1665 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP;
1666
1667#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1668 error = nvmet_fc_register_targetport(portinfo: &pinfo, template: &lpfc_tgttemplate,
1669 dev: &phba->pcidev->dev,
1670 tgtport_p: &phba->targetport);
1671#else
1672 error = -ENOENT;
1673#endif
1674 if (error) {
1675 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1676 "6025 Cannot register NVME targetport x%x: "
1677 "portnm %llx nodenm %llx segs %d qs %d\n",
1678 error,
1679 pinfo.port_name, pinfo.node_name,
1680 lpfc_tgttemplate.max_sgl_segments,
1681 lpfc_tgttemplate.max_hw_queues);
1682 phba->targetport = NULL;
1683 phba->nvmet_support = 0;
1684
1685 lpfc_nvmet_cleanup_io_context(phba);
1686
1687 } else {
1688 tgtp = (struct lpfc_nvmet_tgtport *)
1689 phba->targetport->private;
1690 tgtp->phba = phba;
1691
1692 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
1693 "6026 Registered NVME "
1694 "targetport: x%px, private x%px "
1695 "portnm %llx nodenm %llx segs %d qs %d\n",
1696 phba->targetport, tgtp,
1697 pinfo.port_name, pinfo.node_name,
1698 lpfc_tgttemplate.max_sgl_segments,
1699 lpfc_tgttemplate.max_hw_queues);
1700
1701 atomic_set(v: &tgtp->rcv_ls_req_in, i: 0);
1702 atomic_set(v: &tgtp->rcv_ls_req_out, i: 0);
1703 atomic_set(v: &tgtp->rcv_ls_req_drop, i: 0);
1704 atomic_set(v: &tgtp->xmt_ls_abort, i: 0);
1705 atomic_set(v: &tgtp->xmt_ls_abort_cmpl, i: 0);
1706 atomic_set(v: &tgtp->xmt_ls_rsp, i: 0);
1707 atomic_set(v: &tgtp->xmt_ls_drop, i: 0);
1708 atomic_set(v: &tgtp->xmt_ls_rsp_error, i: 0);
1709 atomic_set(v: &tgtp->xmt_ls_rsp_xb_set, i: 0);
1710 atomic_set(v: &tgtp->xmt_ls_rsp_aborted, i: 0);
1711 atomic_set(v: &tgtp->xmt_ls_rsp_cmpl, i: 0);
1712 atomic_set(v: &tgtp->rcv_fcp_cmd_in, i: 0);
1713 atomic_set(v: &tgtp->rcv_fcp_cmd_out, i: 0);
1714 atomic_set(v: &tgtp->rcv_fcp_cmd_drop, i: 0);
1715 atomic_set(v: &tgtp->xmt_fcp_drop, i: 0);
1716 atomic_set(v: &tgtp->xmt_fcp_read_rsp, i: 0);
1717 atomic_set(v: &tgtp->xmt_fcp_read, i: 0);
1718 atomic_set(v: &tgtp->xmt_fcp_write, i: 0);
1719 atomic_set(v: &tgtp->xmt_fcp_rsp, i: 0);
1720 atomic_set(v: &tgtp->xmt_fcp_release, i: 0);
1721 atomic_set(v: &tgtp->xmt_fcp_rsp_cmpl, i: 0);
1722 atomic_set(v: &tgtp->xmt_fcp_rsp_error, i: 0);
1723 atomic_set(v: &tgtp->xmt_fcp_rsp_xb_set, i: 0);
1724 atomic_set(v: &tgtp->xmt_fcp_rsp_aborted, i: 0);
1725 atomic_set(v: &tgtp->xmt_fcp_rsp_drop, i: 0);
1726 atomic_set(v: &tgtp->xmt_fcp_xri_abort_cqe, i: 0);
1727 atomic_set(v: &tgtp->xmt_fcp_abort, i: 0);
1728 atomic_set(v: &tgtp->xmt_fcp_abort_cmpl, i: 0);
1729 atomic_set(v: &tgtp->xmt_abort_unsol, i: 0);
1730 atomic_set(v: &tgtp->xmt_abort_sol, i: 0);
1731 atomic_set(v: &tgtp->xmt_abort_rsp, i: 0);
1732 atomic_set(v: &tgtp->xmt_abort_rsp_error, i: 0);
1733 atomic_set(v: &tgtp->defer_ctx, i: 0);
1734 atomic_set(v: &tgtp->defer_fod, i: 0);
1735 atomic_set(v: &tgtp->defer_wqfull, i: 0);
1736 }
1737 return error;
1738}
1739
1740int
1741lpfc_nvmet_update_targetport(struct lpfc_hba *phba)
1742{
1743 struct lpfc_vport *vport = phba->pport;
1744
1745 if (!phba->targetport)
1746 return 0;
1747
1748 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
1749 "6007 Update NVMET port x%px did x%x\n",
1750 phba->targetport, vport->fc_myDID);
1751
1752 phba->targetport->port_id = vport->fc_myDID;
1753 return 0;
1754}
1755
1756/**
1757 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort
1758 * @phba: pointer to lpfc hba data structure.
1759 * @axri: pointer to the nvmet xri abort wcqe structure.
1760 *
1761 * This routine is invoked by the worker thread to process a SLI4 fast-path
1762 * NVMET aborted xri.
1763 **/
1764void
1765lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
1766 struct sli4_wcqe_xri_aborted *axri)
1767{
1768#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1769 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
1770 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
1771 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
1772 struct lpfc_nvmet_tgtport *tgtp;
1773 struct nvmefc_tgt_fcp_req *req = NULL;
1774 struct lpfc_nodelist *ndlp;
1775 unsigned long iflag = 0;
1776 int rrq_empty = 0;
1777 bool released = false;
1778
1779 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1780 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid);
1781
1782 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
1783 return;
1784
1785 if (phba->targetport) {
1786 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1787 atomic_inc(v: &tgtp->xmt_fcp_xri_abort_cqe);
1788 }
1789
1790 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1791 list_for_each_entry_safe(ctxp, next_ctxp,
1792 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1793 list) {
1794 if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
1795 continue;
1796
1797 spin_unlock_irqrestore(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock,
1798 flags: iflag);
1799
1800 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1801 /* Check if we already received a free context call
1802 * and we have completed processing an abort situation.
1803 */
1804 if (ctxp->flag & LPFC_NVME_CTX_RLS &&
1805 !(ctxp->flag & LPFC_NVME_ABORT_OP)) {
1806 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
1807 list_del_init(entry: &ctxp->list);
1808 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
1809 released = true;
1810 }
1811 ctxp->flag &= ~LPFC_NVME_XBUSY;
1812 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1813
1814 rrq_empty = list_empty(head: &phba->active_rrq_list);
1815 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
1816 if (ndlp &&
1817 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
1818 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
1819 lpfc_set_rrq_active(phba, ndlp,
1820 ctxp->ctxbuf->sglq->sli4_lxritag,
1821 rxid, 1);
1822 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
1823 }
1824
1825 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1826 "6318 XB aborted oxid x%x flg x%x (%x)\n",
1827 ctxp->oxid, ctxp->flag, released);
1828 if (released)
1829 lpfc_nvmet_ctxbuf_post(phba, ctx_buf: ctxp->ctxbuf);
1830
1831 if (rrq_empty)
1832 lpfc_worker_wake_up(phba);
1833 return;
1834 }
1835 spin_unlock_irqrestore(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock, flags: iflag);
1836 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri);
1837 if (ctxp) {
1838 /*
1839 * Abort already done by FW, so BA_ACC sent.
1840 * However, the transport may be unaware.
1841 */
1842 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1843 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x "
1844 "flag x%x oxid x%x rxid x%x\n",
1845 xri, ctxp->state, ctxp->flag, ctxp->oxid,
1846 rxid);
1847
1848 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1849 ctxp->flag |= LPFC_NVME_ABTS_RCV;
1850 ctxp->state = LPFC_NVME_STE_ABORT;
1851 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1852
1853 lpfc_nvmeio_data(phba,
1854 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1855 xri, raw_smp_processor_id(), 0);
1856
1857 req = &ctxp->hdlrctx.fcp_req;
1858 if (req)
1859 nvmet_fc_rcv_fcp_abort(tgtport: phba->targetport, fcpreq: req);
1860 }
1861#endif
1862}
1863
1864int
1865lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
1866 struct fc_frame_header *fc_hdr)
1867{
1868#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1869 struct lpfc_hba *phba = vport->phba;
1870 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
1871 struct nvmefc_tgt_fcp_req *rsp;
1872 uint32_t sid;
1873 uint16_t oxid, xri;
1874 unsigned long iflag = 0;
1875
1876 sid = sli4_sid_from_fc_hdr(fc_hdr);
1877 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
1878
1879 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1880 list_for_each_entry_safe(ctxp, next_ctxp,
1881 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1882 list) {
1883 if (ctxp->oxid != oxid || ctxp->sid != sid)
1884 continue;
1885
1886 xri = ctxp->ctxbuf->sglq->sli4_xritag;
1887
1888 spin_unlock_irqrestore(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock,
1889 flags: iflag);
1890 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1891 ctxp->flag |= LPFC_NVME_ABTS_RCV;
1892 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1893
1894 lpfc_nvmeio_data(phba,
1895 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1896 xri, raw_smp_processor_id(), 0);
1897
1898 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1899 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
1900
1901 rsp = &ctxp->hdlrctx.fcp_req;
1902 nvmet_fc_rcv_fcp_abort(tgtport: phba->targetport, fcpreq: rsp);
1903
1904 /* Respond with BA_ACC accordingly */
1905 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, aborted: 1);
1906 return 0;
1907 }
1908 spin_unlock_irqrestore(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock, flags: iflag);
1909 /* check the wait list */
1910 if (phba->sli4_hba.nvmet_io_wait_cnt) {
1911 struct rqb_dmabuf *nvmebuf;
1912 struct fc_frame_header *fc_hdr_tmp;
1913 u32 sid_tmp;
1914 u16 oxid_tmp;
1915 bool found = false;
1916
1917 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
1918
1919 /* match by oxid and s_id */
1920 list_for_each_entry(nvmebuf,
1921 &phba->sli4_hba.lpfc_nvmet_io_wait_list,
1922 hbuf.list) {
1923 fc_hdr_tmp = (struct fc_frame_header *)
1924 (nvmebuf->hbuf.virt);
1925 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id);
1926 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp);
1927 if (oxid_tmp != oxid || sid_tmp != sid)
1928 continue;
1929
1930 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1931 "6321 NVMET Rcv ABTS oxid x%x from x%x "
1932 "is waiting for a ctxp\n",
1933 oxid, sid);
1934
1935 list_del_init(entry: &nvmebuf->hbuf.list);
1936 phba->sli4_hba.nvmet_io_wait_cnt--;
1937 found = true;
1938 break;
1939 }
1940 spin_unlock_irqrestore(lock: &phba->sli4_hba.nvmet_io_wait_lock,
1941 flags: iflag);
1942
1943 /* free buffer since already posted a new DMA buffer to RQ */
1944 if (found) {
1945 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
1946 /* Respond with BA_ACC accordingly */
1947 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, aborted: 1);
1948 return 0;
1949 }
1950 }
1951
1952 /* check active list */
1953 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid);
1954 if (ctxp) {
1955 xri = ctxp->ctxbuf->sglq->sli4_xritag;
1956
1957 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1958 ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP);
1959 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1960
1961 lpfc_nvmeio_data(phba,
1962 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1963 xri, raw_smp_processor_id(), 0);
1964
1965 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1966 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x "
1967 "flag x%x state x%x\n",
1968 ctxp->oxid, xri, ctxp->flag, ctxp->state);
1969
1970 if (ctxp->flag & LPFC_NVME_TNOTIFY) {
1971 /* Notify the transport */
1972 nvmet_fc_rcv_fcp_abort(tgtport: phba->targetport,
1973 fcpreq: &ctxp->hdlrctx.fcp_req);
1974 } else {
1975 cancel_work_sync(work: &ctxp->ctxbuf->defer_work);
1976 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1977 lpfc_nvmet_defer_release(phba, ctxp);
1978 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
1979 }
1980 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1981 ctxp->oxid);
1982
1983 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, aborted: 1);
1984 return 0;
1985 }
1986
1987 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n",
1988 oxid, raw_smp_processor_id(), 1);
1989
1990 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1991 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid);
1992
1993 /* Respond with BA_RJT accordingly */
1994 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, aborted: 0);
1995#endif
1996 return 0;
1997}
1998
1999static void
2000lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq,
2001 struct lpfc_async_xchg_ctx *ctxp)
2002{
2003 struct lpfc_sli_ring *pring;
2004 struct lpfc_iocbq *nvmewqeq;
2005 struct lpfc_iocbq *next_nvmewqeq;
2006 unsigned long iflags;
2007 struct lpfc_wcqe_complete wcqe;
2008 struct lpfc_wcqe_complete *wcqep;
2009
2010 pring = wq->pring;
2011 wcqep = &wcqe;
2012
2013 /* Fake an ABORT error code back to cmpl routine */
2014 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete));
2015 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT);
2016 wcqep->parameter = IOERR_ABORT_REQUESTED;
2017
2018 spin_lock_irqsave(&pring->ring_lock, iflags);
2019 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq,
2020 &wq->wqfull_list, list) {
2021 if (ctxp) {
2022 /* Checking for a specific IO to flush */
2023 if (nvmewqeq->context_un.axchg == ctxp) {
2024 list_del(entry: &nvmewqeq->list);
2025 spin_unlock_irqrestore(lock: &pring->ring_lock,
2026 flags: iflags);
2027 memcpy(&nvmewqeq->wcqe_cmpl, wcqep,
2028 sizeof(*wcqep));
2029 lpfc_nvmet_xmt_fcp_op_cmp(phba, cmdwqe: nvmewqeq,
2030 rspwqe: nvmewqeq);
2031 return;
2032 }
2033 continue;
2034 } else {
2035 /* Flush all IOs */
2036 list_del(entry: &nvmewqeq->list);
2037 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
2038 memcpy(&nvmewqeq->wcqe_cmpl, wcqep, sizeof(*wcqep));
2039 lpfc_nvmet_xmt_fcp_op_cmp(phba, cmdwqe: nvmewqeq, rspwqe: nvmewqeq);
2040 spin_lock_irqsave(&pring->ring_lock, iflags);
2041 }
2042 }
2043 if (!ctxp)
2044 wq->q_flag &= ~HBA_NVMET_WQFULL;
2045 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
2046}
2047
2048void
2049lpfc_nvmet_wqfull_process(struct lpfc_hba *phba,
2050 struct lpfc_queue *wq)
2051{
2052#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2053 struct lpfc_sli_ring *pring;
2054 struct lpfc_iocbq *nvmewqeq;
2055 struct lpfc_async_xchg_ctx *ctxp;
2056 unsigned long iflags;
2057 int rc;
2058
2059 /*
2060 * Some WQE slots are available, so try to re-issue anything
2061 * on the WQ wqfull_list.
2062 */
2063 pring = wq->pring;
2064 spin_lock_irqsave(&pring->ring_lock, iflags);
2065 while (!list_empty(head: &wq->wqfull_list)) {
2066 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq,
2067 list);
2068 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
2069 ctxp = nvmewqeq->context_un.axchg;
2070 rc = lpfc_sli4_issue_wqe(phba, qp: ctxp->hdwq, pwqe: nvmewqeq);
2071 spin_lock_irqsave(&pring->ring_lock, iflags);
2072 if (rc == -EBUSY) {
2073 /* WQ was full again, so put it back on the list */
2074 list_add(new: &nvmewqeq->list, head: &wq->wqfull_list);
2075 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
2076 return;
2077 }
2078 if (rc == WQE_SUCCESS) {
2079#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2080 if (ctxp->ts_cmd_nvme) {
2081 if (ctxp->hdlrctx.fcp_req.op == NVMET_FCOP_RSP)
2082 ctxp->ts_status_wqput = ktime_get_ns();
2083 else
2084 ctxp->ts_data_wqput = ktime_get_ns();
2085 }
2086#endif
2087 } else {
2088 WARN_ON(rc);
2089 }
2090 }
2091 wq->q_flag &= ~HBA_NVMET_WQFULL;
2092 spin_unlock_irqrestore(lock: &pring->ring_lock, flags: iflags);
2093
2094#endif
2095}
2096
2097void
2098lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
2099{
2100#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2101 struct lpfc_nvmet_tgtport *tgtp;
2102 struct lpfc_queue *wq;
2103 uint32_t qidx;
2104 DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp);
2105
2106 if (phba->nvmet_support == 0)
2107 return;
2108 if (phba->targetport) {
2109 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2110 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
2111 wq = phba->sli4_hba.hdwq[qidx].io_wq;
2112 lpfc_nvmet_wqfull_flush(phba, wq, NULL);
2113 }
2114 tgtp->tport_unreg_cmp = &tport_unreg_cmp;
2115 nvmet_fc_unregister_targetport(tgtport: phba->targetport);
2116 if (!wait_for_completion_timeout(x: &tport_unreg_cmp,
2117 timeout: msecs_to_jiffies(LPFC_NVMET_WAIT_TMO)))
2118 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2119 "6179 Unreg targetport x%px timeout "
2120 "reached.\n", phba->targetport);
2121 lpfc_nvmet_cleanup_io_context(phba);
2122 }
2123 phba->targetport = NULL;
2124#endif
2125}
2126
2127/**
2128 * lpfc_nvmet_handle_lsreq - Process an NVME LS request
2129 * @phba: pointer to lpfc hba data structure.
2130 * @axchg: pointer to exchange context for the NVME LS request
2131 *
2132 * This routine is used for processing an asychronously received NVME LS
2133 * request. Any remaining validation is done and the LS is then forwarded
2134 * to the nvmet-fc transport via nvmet_fc_rcv_ls_req().
2135 *
2136 * The calling sequence should be: nvmet_fc_rcv_ls_req() -> (processing)
2137 * -> lpfc_nvmet_xmt_ls_rsp/cmp -> req->done.
2138 * lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg.
2139 *
2140 * Returns 0 if LS was handled and delivered to the transport
2141 * Returns 1 if LS failed to be handled and should be dropped
2142 */
2143int
2144lpfc_nvmet_handle_lsreq(struct lpfc_hba *phba,
2145 struct lpfc_async_xchg_ctx *axchg)
2146{
2147#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2148 struct lpfc_nvmet_tgtport *tgtp = phba->targetport->private;
2149 uint32_t *payload = axchg->payload;
2150 int rc;
2151
2152 atomic_inc(v: &tgtp->rcv_ls_req_in);
2153
2154 /*
2155 * Driver passes the ndlp as the hosthandle argument allowing
2156 * the transport to generate LS requests for any associateions
2157 * that are created.
2158 */
2159 rc = nvmet_fc_rcv_ls_req(tgtport: phba->targetport, hosthandle: axchg->ndlp, rsp: &axchg->ls_rsp,
2160 lsreqbuf: axchg->payload, lsreqbuf_len: axchg->size);
2161
2162 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
2163 "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x "
2164 "%08x %08x %08x\n", axchg->size, rc,
2165 *payload, *(payload+1), *(payload+2),
2166 *(payload+3), *(payload+4), *(payload+5));
2167
2168 if (!rc) {
2169 atomic_inc(v: &tgtp->rcv_ls_req_out);
2170 return 0;
2171 }
2172
2173 atomic_inc(v: &tgtp->rcv_ls_req_drop);
2174#endif
2175 return 1;
2176}
2177
2178static void
2179lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf)
2180{
2181#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2182 struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
2183 struct lpfc_hba *phba = ctxp->phba;
2184 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
2185 struct lpfc_nvmet_tgtport *tgtp;
2186 uint32_t *payload, qno;
2187 uint32_t rc;
2188 unsigned long iflags;
2189
2190 if (!nvmebuf) {
2191 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2192 "6159 process_rcv_fcp_req, nvmebuf is NULL, "
2193 "oxid: x%x flg: x%x state: x%x\n",
2194 ctxp->oxid, ctxp->flag, ctxp->state);
2195 spin_lock_irqsave(&ctxp->ctxlock, iflags);
2196 lpfc_nvmet_defer_release(phba, ctxp);
2197 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2198 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
2199 ctxp->oxid);
2200 return;
2201 }
2202
2203 if (ctxp->flag & LPFC_NVME_ABTS_RCV) {
2204 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2205 "6324 IO oxid x%x aborted\n",
2206 ctxp->oxid);
2207 return;
2208 }
2209
2210 payload = (uint32_t *)(nvmebuf->dbuf.virt);
2211 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2212 ctxp->flag |= LPFC_NVME_TNOTIFY;
2213#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2214 if (ctxp->ts_isr_cmd)
2215 ctxp->ts_cmd_nvme = ktime_get_ns();
2216#endif
2217 /*
2218 * The calling sequence should be:
2219 * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done
2220 * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp.
2221 * When we return from nvmet_fc_rcv_fcp_req, all relevant info
2222 * the NVME command / FC header is stored.
2223 * A buffer has already been reposted for this IO, so just free
2224 * the nvmebuf.
2225 */
2226 rc = nvmet_fc_rcv_fcp_req(tgtport: phba->targetport, fcpreq: &ctxp->hdlrctx.fcp_req,
2227 cmdiubuf: payload, cmdiubuf_len: ctxp->size);
2228 /* Process FCP command */
2229 if (rc == 0) {
2230 atomic_inc(v: &tgtp->rcv_fcp_cmd_out);
2231 spin_lock_irqsave(&ctxp->ctxlock, iflags);
2232 if ((ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) ||
2233 (nvmebuf != ctxp->rqb_buffer)) {
2234 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2235 return;
2236 }
2237 ctxp->rqb_buffer = NULL;
2238 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2239 lpfc_rq_buf_free(phba, mp: &nvmebuf->hbuf); /* repost */
2240 return;
2241 }
2242
2243 /* Processing of FCP command is deferred */
2244 if (rc == -EOVERFLOW) {
2245 lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d "
2246 "from %06x\n",
2247 ctxp->oxid, ctxp->size, ctxp->sid);
2248 atomic_inc(v: &tgtp->rcv_fcp_cmd_out);
2249 atomic_inc(v: &tgtp->defer_fod);
2250 spin_lock_irqsave(&ctxp->ctxlock, iflags);
2251 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
2252 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2253 return;
2254 }
2255 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2256 /*
2257 * Post a replacement DMA buffer to RQ and defer
2258 * freeing rcv buffer till .defer_rcv callback
2259 */
2260 qno = nvmebuf->idx;
2261 lpfc_post_rq_buffer(
2262 phba, hrq: phba->sli4_hba.nvmet_mrq_hdr[qno],
2263 drq: phba->sli4_hba.nvmet_mrq_data[qno], count: 1, idx: qno);
2264 return;
2265 }
2266 ctxp->flag &= ~LPFC_NVME_TNOTIFY;
2267 atomic_inc(v: &tgtp->rcv_fcp_cmd_drop);
2268 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2269 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n",
2270 ctxp->oxid, rc,
2271 atomic_read(&tgtp->rcv_fcp_cmd_in),
2272 atomic_read(&tgtp->rcv_fcp_cmd_out),
2273 atomic_read(&tgtp->xmt_fcp_release));
2274 lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n",
2275 ctxp->oxid, ctxp->size, ctxp->sid);
2276 spin_lock_irqsave(&ctxp->ctxlock, iflags);
2277 lpfc_nvmet_defer_release(phba, ctxp);
2278 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflags);
2279 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
2280#endif
2281}
2282
2283static void
2284lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work)
2285{
2286#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2287 struct lpfc_nvmet_ctxbuf *ctx_buf =
2288 container_of(work, struct lpfc_nvmet_ctxbuf, defer_work);
2289
2290 lpfc_nvmet_process_rcv_fcp_req(ctx_buf);
2291#endif
2292}
2293
2294static struct lpfc_nvmet_ctxbuf *
2295lpfc_nvmet_replenish_context(struct lpfc_hba *phba,
2296 struct lpfc_nvmet_ctx_info *current_infop)
2297{
2298#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
2299 struct lpfc_nvmet_ctxbuf *ctx_buf = NULL;
2300 struct lpfc_nvmet_ctx_info *get_infop;
2301 int i;
2302
2303 /*
2304 * The current_infop for the MRQ a NVME command IU was received
2305 * on is empty. Our goal is to replenish this MRQs context
2306 * list from a another CPUs.
2307 *
2308 * First we need to pick a context list to start looking on.
2309 * nvmet_ctx_start_cpu has available context the last time
2310 * we needed to replenish this CPU where nvmet_ctx_next_cpu
2311 * is just the next sequential CPU for this MRQ.
2312 */
2313 if (current_infop->nvmet_ctx_start_cpu)
2314 get_infop = current_infop->nvmet_ctx_start_cpu;
2315 else
2316 get_infop = current_infop->nvmet_ctx_next_cpu;
2317
2318 for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) {
2319 if (get_infop == current_infop) {
2320 get_infop = get_infop->nvmet_ctx_next_cpu;
2321 continue;
2322 }
2323 spin_lock(lock: &get_infop->nvmet_ctx_list_lock);
2324
2325 /* Just take the entire context list, if there are any */
2326 if (get_infop->nvmet_ctx_list_cnt) {
2327 list_splice_init(list: &get_infop->nvmet_ctx_list,
2328 head: &current_infop->nvmet_ctx_list);
2329 current_infop->nvmet_ctx_list_cnt =
2330 get_infop->nvmet_ctx_list_cnt - 1;
2331 get_infop->nvmet_ctx_list_cnt = 0;
2332 spin_unlock(lock: &get_infop->nvmet_ctx_list_lock);
2333
2334 current_infop->nvmet_ctx_start_cpu = get_infop;
2335 list_remove_head(&current_infop->nvmet_ctx_list,
2336 ctx_buf, struct lpfc_nvmet_ctxbuf,
2337 list);
2338 return ctx_buf;
2339 }
2340
2341 /* Otherwise, move on to the next CPU for this MRQ */
2342 spin_unlock(lock: &get_infop->nvmet_ctx_list_lock);
2343 get_infop = get_infop->nvmet_ctx_next_cpu;
2344 }
2345
2346#endif
2347 /* Nothing found, all contexts for the MRQ are in-flight */
2348 return NULL;
2349}
2350
2351/**
2352 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
2353 * @phba: pointer to lpfc hba data structure.
2354 * @idx: relative index of MRQ vector
2355 * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
2356 * @isr_timestamp: in jiffies.
2357 * @cqflag: cq processing information regarding workload.
2358 *
2359 * This routine is used for processing the WQE associated with a unsolicited
2360 * event. It first determines whether there is an existing ndlp that matches
2361 * the DID from the unsolicited WQE. If not, it will create a new one with
2362 * the DID from the unsolicited WQE. The ELS command from the unsolicited
2363 * WQE is then used to invoke the proper routine and to set up proper state
2364 * of the discovery state machine.
2365 **/
2366static void
2367lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba,
2368 uint32_t idx,
2369 struct rqb_dmabuf *nvmebuf,
2370 uint64_t isr_timestamp,
2371 uint8_t cqflag)
2372{
2373 struct lpfc_async_xchg_ctx *ctxp;
2374 struct lpfc_nvmet_tgtport *tgtp;
2375 struct fc_frame_header *fc_hdr;
2376 struct lpfc_nvmet_ctxbuf *ctx_buf;
2377 struct lpfc_nvmet_ctx_info *current_infop;
2378 uint32_t size, oxid, sid, qno;
2379 unsigned long iflag;
2380 int current_cpu;
2381
2382 if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
2383 return;
2384
2385 ctx_buf = NULL;
2386 if (!nvmebuf || !phba->targetport) {
2387 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2388 "6157 NVMET FCP Drop IO\n");
2389 if (nvmebuf)
2390 lpfc_rq_buf_free(phba, mp: &nvmebuf->hbuf);
2391 return;
2392 }
2393
2394 /*
2395 * Get a pointer to the context list for this MRQ based on
2396 * the CPU this MRQ IRQ is associated with. If the CPU association
2397 * changes from our initial assumption, the context list could
2398 * be empty, thus it would need to be replenished with the
2399 * context list from another CPU for this MRQ.
2400 */
2401 current_cpu = raw_smp_processor_id();
2402 current_infop = lpfc_get_ctx_list(phba, current_cpu, idx);
2403 spin_lock_irqsave(&current_infop->nvmet_ctx_list_lock, iflag);
2404 if (current_infop->nvmet_ctx_list_cnt) {
2405 list_remove_head(&current_infop->nvmet_ctx_list,
2406 ctx_buf, struct lpfc_nvmet_ctxbuf, list);
2407 current_infop->nvmet_ctx_list_cnt--;
2408 } else {
2409 ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop);
2410 }
2411 spin_unlock_irqrestore(lock: &current_infop->nvmet_ctx_list_lock, flags: iflag);
2412
2413 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
2414 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
2415 size = nvmebuf->bytes_recv;
2416
2417#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2418 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
2419 this_cpu_inc(phba->sli4_hba.c_stat->rcv_io);
2420 if (idx != current_cpu)
2421 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
2422 "6703 CPU Check rcv: "
2423 "cpu %d expect %d\n",
2424 current_cpu, idx);
2425 }
2426#endif
2427
2428 lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n",
2429 oxid, size, raw_smp_processor_id());
2430
2431 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2432
2433 if (!ctx_buf) {
2434 /* Queue this NVME IO to process later */
2435 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
2436 list_add_tail(new: &nvmebuf->hbuf.list,
2437 head: &phba->sli4_hba.lpfc_nvmet_io_wait_list);
2438 phba->sli4_hba.nvmet_io_wait_cnt++;
2439 phba->sli4_hba.nvmet_io_wait_total++;
2440 spin_unlock_irqrestore(lock: &phba->sli4_hba.nvmet_io_wait_lock,
2441 flags: iflag);
2442
2443 /* Post a brand new DMA buffer to RQ */
2444 qno = nvmebuf->idx;
2445 lpfc_post_rq_buffer(
2446 phba, hrq: phba->sli4_hba.nvmet_mrq_hdr[qno],
2447 drq: phba->sli4_hba.nvmet_mrq_data[qno], count: 1, idx: qno);
2448
2449 atomic_inc(v: &tgtp->defer_ctx);
2450 return;
2451 }
2452
2453 sid = sli4_sid_from_fc_hdr(fc_hdr);
2454
2455 ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context;
2456 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
2457 list_add_tail(new: &ctxp->list, head: &phba->sli4_hba.t_active_ctx_list);
2458 spin_unlock_irqrestore(lock: &phba->sli4_hba.t_active_list_lock, flags: iflag);
2459 if (ctxp->state != LPFC_NVME_STE_FREE) {
2460 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2461 "6414 NVMET Context corrupt %d %d oxid x%x\n",
2462 ctxp->state, ctxp->entry_cnt, ctxp->oxid);
2463 }
2464 ctxp->wqeq = NULL;
2465 ctxp->offset = 0;
2466 ctxp->phba = phba;
2467 ctxp->size = size;
2468 ctxp->oxid = oxid;
2469 ctxp->sid = sid;
2470 ctxp->idx = idx;
2471 ctxp->state = LPFC_NVME_STE_RCV;
2472 ctxp->entry_cnt = 1;
2473 ctxp->flag = 0;
2474 ctxp->ctxbuf = ctx_buf;
2475 ctxp->rqb_buffer = (void *)nvmebuf;
2476 ctxp->hdwq = NULL;
2477 spin_lock_init(&ctxp->ctxlock);
2478
2479#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
2480 if (isr_timestamp)
2481 ctxp->ts_isr_cmd = isr_timestamp;
2482 ctxp->ts_cmd_nvme = 0;
2483 ctxp->ts_nvme_data = 0;
2484 ctxp->ts_data_wqput = 0;
2485 ctxp->ts_isr_data = 0;
2486 ctxp->ts_data_nvme = 0;
2487 ctxp->ts_nvme_status = 0;
2488 ctxp->ts_status_wqput = 0;
2489 ctxp->ts_isr_status = 0;
2490 ctxp->ts_status_nvme = 0;
2491#endif
2492
2493 atomic_inc(v: &tgtp->rcv_fcp_cmd_in);
2494 /* check for cq processing load */
2495 if (!cqflag) {
2496 lpfc_nvmet_process_rcv_fcp_req(ctx_buf);
2497 return;
2498 }
2499
2500 if (!queue_work(wq: phba->wq, work: &ctx_buf->defer_work)) {
2501 atomic_inc(v: &tgtp->rcv_fcp_cmd_drop);
2502 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2503 "6325 Unable to queue work for oxid x%x. "
2504 "FCP Drop IO [x%x x%x x%x]\n",
2505 ctxp->oxid,
2506 atomic_read(&tgtp->rcv_fcp_cmd_in),
2507 atomic_read(&tgtp->rcv_fcp_cmd_out),
2508 atomic_read(&tgtp->xmt_fcp_release));
2509
2510 spin_lock_irqsave(&ctxp->ctxlock, iflag);
2511 lpfc_nvmet_defer_release(phba, ctxp);
2512 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags: iflag);
2513 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
2514 }
2515}
2516
2517/**
2518 * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport
2519 * @phba: pointer to lpfc hba data structure.
2520 * @idx: relative index of MRQ vector
2521 * @nvmebuf: pointer to received nvme data structure.
2522 * @isr_timestamp: in jiffies.
2523 * @cqflag: cq processing information regarding workload.
2524 *
2525 * This routine is used to process an unsolicited event received from a SLI
2526 * (Service Level Interface) ring. The actual processing of the data buffer
2527 * associated with the unsolicited event is done by invoking the routine
2528 * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the
2529 * SLI RQ on which the unsolicited event was received.
2530 **/
2531void
2532lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba,
2533 uint32_t idx,
2534 struct rqb_dmabuf *nvmebuf,
2535 uint64_t isr_timestamp,
2536 uint8_t cqflag)
2537{
2538 if (!nvmebuf) {
2539 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2540 "3167 NVMET FCP Drop IO\n");
2541 return;
2542 }
2543 if (phba->nvmet_support == 0) {
2544 lpfc_rq_buf_free(phba, mp: &nvmebuf->hbuf);
2545 return;
2546 }
2547 lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag);
2548}
2549
2550/**
2551 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure
2552 * @phba: pointer to a host N_Port data structure.
2553 * @ctxp: Context info for NVME LS Request
2554 * @rspbuf: DMA buffer of NVME command.
2555 * @rspsize: size of the NVME command.
2556 *
2557 * This routine is used for allocating a lpfc-WQE data structure from
2558 * the driver lpfc-WQE free-list and prepare the WQE with the parameters
2559 * passed into the routine for discovery state machine to issue an Extended
2560 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation
2561 * and preparation routine that is used by all the discovery state machine
2562 * routines and the NVME command-specific fields will be later set up by
2563 * the individual discovery machine routines after calling this routine
2564 * allocating and preparing a generic WQE data structure. It fills in the
2565 * Buffer Descriptor Entries (BDEs), allocates buffers for both command
2566 * payload and response payload (if expected). The reference count on the
2567 * ndlp is incremented by 1 and the reference to the ndlp is put into
2568 * context1 of the WQE data structure for this WQE to hold the ndlp
2569 * reference for the command's callback function to access later.
2570 *
2571 * Return code
2572 * Pointer to the newly allocated/prepared nvme wqe data structure
2573 * NULL - when nvme wqe data structure allocation/preparation failed
2574 **/
2575static struct lpfc_iocbq *
2576lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba,
2577 struct lpfc_async_xchg_ctx *ctxp,
2578 dma_addr_t rspbuf, uint16_t rspsize)
2579{
2580 struct lpfc_nodelist *ndlp;
2581 struct lpfc_iocbq *nvmewqe;
2582 union lpfc_wqe128 *wqe;
2583
2584 if (!lpfc_is_link_up(phba)) {
2585 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2586 "6104 NVMET prep LS wqe: link err: "
2587 "NPORT x%x oxid:x%x ste %d\n",
2588 ctxp->sid, ctxp->oxid, ctxp->state);
2589 return NULL;
2590 }
2591
2592 /* Allocate buffer for command wqe */
2593 nvmewqe = lpfc_sli_get_iocbq(phba);
2594 if (nvmewqe == NULL) {
2595 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2596 "6105 NVMET prep LS wqe: No WQE: "
2597 "NPORT x%x oxid x%x ste %d\n",
2598 ctxp->sid, ctxp->oxid, ctxp->state);
2599 return NULL;
2600 }
2601
2602 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
2603 if (!ndlp ||
2604 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2605 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
2606 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2607 "6106 NVMET prep LS wqe: No ndlp: "
2608 "NPORT x%x oxid x%x ste %d\n",
2609 ctxp->sid, ctxp->oxid, ctxp->state);
2610 goto nvme_wqe_free_wqeq_exit;
2611 }
2612 ctxp->wqeq = nvmewqe;
2613
2614 /* prevent preparing wqe with NULL ndlp reference */
2615 nvmewqe->ndlp = lpfc_nlp_get(ndlp);
2616 if (!nvmewqe->ndlp)
2617 goto nvme_wqe_free_wqeq_exit;
2618 nvmewqe->context_un.axchg = ctxp;
2619
2620 wqe = &nvmewqe->wqe;
2621 memset(wqe, 0, sizeof(union lpfc_wqe));
2622
2623 /* Words 0 - 2 */
2624 wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2625 wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize;
2626 wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf));
2627 wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf));
2628
2629 /* Word 3 */
2630
2631 /* Word 4 */
2632
2633 /* Word 5 */
2634 bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0);
2635 bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1);
2636 bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0);
2637 bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP);
2638 bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME);
2639
2640 /* Word 6 */
2641 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com,
2642 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2643 bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag);
2644
2645 /* Word 7 */
2646 bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com,
2647 CMD_XMIT_SEQUENCE64_WQE);
2648 bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI);
2649 bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3);
2650 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0);
2651
2652 /* Word 8 */
2653 wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag;
2654
2655 /* Word 9 */
2656 bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag);
2657 /* Needs to be set by caller */
2658 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid);
2659
2660 /* Word 10 */
2661 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1);
2662 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
2663 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com,
2664 LPFC_WQE_LENLOC_WORD12);
2665 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0);
2666
2667 /* Word 11 */
2668 bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com,
2669 LPFC_WQE_CQ_ID_DEFAULT);
2670 bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com,
2671 OTHER_COMMAND);
2672
2673 /* Word 12 */
2674 wqe->xmit_sequence.xmit_len = rspsize;
2675
2676 nvmewqe->retry = 1;
2677 nvmewqe->vport = phba->pport;
2678 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
2679 nvmewqe->cmd_flag |= LPFC_IO_NVME_LS;
2680
2681 /* Xmit NVMET response to remote NPORT <did> */
2682 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
2683 "6039 Xmit NVMET LS response to remote "
2684 "NPORT x%x iotag:x%x oxid:x%x size:x%x\n",
2685 ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid,
2686 rspsize);
2687 return nvmewqe;
2688
2689nvme_wqe_free_wqeq_exit:
2690 nvmewqe->context_un.axchg = NULL;
2691 nvmewqe->ndlp = NULL;
2692 nvmewqe->bpl_dmabuf = NULL;
2693 lpfc_sli_release_iocbq(phba, nvmewqe);
2694 return NULL;
2695}
2696
2697
2698static struct lpfc_iocbq *
2699lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
2700 struct lpfc_async_xchg_ctx *ctxp)
2701{
2702 struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.fcp_req;
2703 struct lpfc_nvmet_tgtport *tgtp;
2704 struct sli4_sge *sgl;
2705 struct lpfc_nodelist *ndlp;
2706 struct lpfc_iocbq *nvmewqe;
2707 struct scatterlist *sgel;
2708 union lpfc_wqe128 *wqe;
2709 struct ulp_bde64 *bde;
2710 dma_addr_t physaddr;
2711 int i, cnt, nsegs;
2712 bool use_pbde = false;
2713 int xc = 1;
2714
2715 if (!lpfc_is_link_up(phba)) {
2716 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2717 "6107 NVMET prep FCP wqe: link err:"
2718 "NPORT x%x oxid x%x ste %d\n",
2719 ctxp->sid, ctxp->oxid, ctxp->state);
2720 return NULL;
2721 }
2722
2723 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
2724 if (!ndlp ||
2725 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2726 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
2727 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2728 "6108 NVMET prep FCP wqe: no ndlp: "
2729 "NPORT x%x oxid x%x ste %d\n",
2730 ctxp->sid, ctxp->oxid, ctxp->state);
2731 return NULL;
2732 }
2733
2734 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) {
2735 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2736 "6109 NVMET prep FCP wqe: seg cnt err: "
2737 "NPORT x%x oxid x%x ste %d cnt %d\n",
2738 ctxp->sid, ctxp->oxid, ctxp->state,
2739 phba->cfg_nvme_seg_cnt);
2740 return NULL;
2741 }
2742 nsegs = rsp->sg_cnt;
2743
2744 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2745 nvmewqe = ctxp->wqeq;
2746 if (nvmewqe == NULL) {
2747 /* Allocate buffer for command wqe */
2748 nvmewqe = ctxp->ctxbuf->iocbq;
2749 if (nvmewqe == NULL) {
2750 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2751 "6110 NVMET prep FCP wqe: No "
2752 "WQE: NPORT x%x oxid x%x ste %d\n",
2753 ctxp->sid, ctxp->oxid, ctxp->state);
2754 return NULL;
2755 }
2756 ctxp->wqeq = nvmewqe;
2757 xc = 0; /* create new XRI */
2758 nvmewqe->sli4_lxritag = NO_XRI;
2759 nvmewqe->sli4_xritag = NO_XRI;
2760 }
2761
2762 /* Sanity check */
2763 if (((ctxp->state == LPFC_NVME_STE_RCV) &&
2764 (ctxp->entry_cnt == 1)) ||
2765 (ctxp->state == LPFC_NVME_STE_DATA)) {
2766 wqe = &nvmewqe->wqe;
2767 } else {
2768 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2769 "6111 Wrong state NVMET FCP: %d cnt %d\n",
2770 ctxp->state, ctxp->entry_cnt);
2771 return NULL;
2772 }
2773
2774 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl;
2775 switch (rsp->op) {
2776 case NVMET_FCOP_READDATA:
2777 case NVMET_FCOP_READDATA_RSP:
2778 /* From the tsend template, initialize words 7 - 11 */
2779 memcpy(&wqe->words[7],
2780 &lpfc_tsend_cmd_template.words[7],
2781 sizeof(uint32_t) * 5);
2782
2783 /* Words 0 - 2 : The first sg segment */
2784 sgel = &rsp->sg[0];
2785 physaddr = sg_dma_address(sgel);
2786 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2787 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel);
2788 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr));
2789 wqe->fcp_tsend.bde.addrHigh =
2790 cpu_to_le32(putPaddrHigh(physaddr));
2791
2792 /* Word 3 */
2793 wqe->fcp_tsend.payload_offset_len = 0;
2794
2795 /* Word 4 */
2796 wqe->fcp_tsend.relative_offset = ctxp->offset;
2797
2798 /* Word 5 */
2799 wqe->fcp_tsend.reserved = 0;
2800
2801 /* Word 6 */
2802 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com,
2803 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2804 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com,
2805 nvmewqe->sli4_xritag);
2806
2807 /* Word 7 - set ar later */
2808
2809 /* Word 8 */
2810 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag;
2811
2812 /* Word 9 */
2813 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag);
2814 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid);
2815
2816 /* Word 10 - set wqes later, in template xc=1 */
2817 if (!xc)
2818 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0);
2819
2820 /* Word 12 */
2821 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
2822
2823 /* Setup 2 SKIP SGEs */
2824 sgl->addr_hi = 0;
2825 sgl->addr_lo = 0;
2826 sgl->word2 = 0;
2827 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2828 sgl->word2 = cpu_to_le32(sgl->word2);
2829 sgl->sge_len = 0;
2830 sgl++;
2831 sgl->addr_hi = 0;
2832 sgl->addr_lo = 0;
2833 sgl->word2 = 0;
2834 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2835 sgl->word2 = cpu_to_le32(sgl->word2);
2836 sgl->sge_len = 0;
2837 sgl++;
2838 if (rsp->op == NVMET_FCOP_READDATA_RSP) {
2839 atomic_inc(v: &tgtp->xmt_fcp_read_rsp);
2840
2841 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
2842
2843 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
2844 if (ndlp->nlp_flag & NLP_SUPPRESS_RSP)
2845 bf_set(wqe_sup,
2846 &wqe->fcp_tsend.wqe_com, 1);
2847 } else {
2848 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1);
2849 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1);
2850 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com,
2851 ((rsp->rsplen >> 2) - 1));
2852 memcpy(&wqe->words[16], rsp->rspaddr,
2853 rsp->rsplen);
2854 }
2855 } else {
2856 atomic_inc(v: &tgtp->xmt_fcp_read);
2857
2858 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
2859 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
2860 }
2861 break;
2862
2863 case NVMET_FCOP_WRITEDATA:
2864 /* From the treceive template, initialize words 3 - 11 */
2865 memcpy(&wqe->words[3],
2866 &lpfc_treceive_cmd_template.words[3],
2867 sizeof(uint32_t) * 9);
2868
2869 /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */
2870 wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP;
2871 wqe->fcp_treceive.bde.tus.f.bdeSize = 0;
2872 wqe->fcp_treceive.bde.addrLow = 0;
2873 wqe->fcp_treceive.bde.addrHigh = 0;
2874
2875 /* Word 4 */
2876 wqe->fcp_treceive.relative_offset = ctxp->offset;
2877
2878 /* Word 6 */
2879 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com,
2880 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2881 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com,
2882 nvmewqe->sli4_xritag);
2883
2884 /* Word 7 */
2885
2886 /* Word 8 */
2887 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag;
2888
2889 /* Word 9 */
2890 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag);
2891 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid);
2892
2893 /* Word 10 - in template xc=1 */
2894 if (!xc)
2895 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0);
2896
2897 /* Word 11 - check for pbde */
2898 if (nsegs == 1 && phba->cfg_enable_pbde) {
2899 use_pbde = true;
2900 /* Word 11 - PBDE bit already preset by template */
2901 } else {
2902 /* Overwrite default template setting */
2903 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0);
2904 }
2905
2906 /* Word 12 */
2907 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
2908
2909 /* Setup 2 SKIP SGEs */
2910 sgl->addr_hi = 0;
2911 sgl->addr_lo = 0;
2912 sgl->word2 = 0;
2913 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2914 sgl->word2 = cpu_to_le32(sgl->word2);
2915 sgl->sge_len = 0;
2916 sgl++;
2917 sgl->addr_hi = 0;
2918 sgl->addr_lo = 0;
2919 sgl->word2 = 0;
2920 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2921 sgl->word2 = cpu_to_le32(sgl->word2);
2922 sgl->sge_len = 0;
2923 sgl++;
2924 atomic_inc(v: &tgtp->xmt_fcp_write);
2925 break;
2926
2927 case NVMET_FCOP_RSP:
2928 /* From the treceive template, initialize words 4 - 11 */
2929 memcpy(&wqe->words[4],
2930 &lpfc_trsp_cmd_template.words[4],
2931 sizeof(uint32_t) * 8);
2932
2933 /* Words 0 - 2 */
2934 physaddr = rsp->rspdma;
2935 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2936 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen;
2937 wqe->fcp_trsp.bde.addrLow =
2938 cpu_to_le32(putPaddrLow(physaddr));
2939 wqe->fcp_trsp.bde.addrHigh =
2940 cpu_to_le32(putPaddrHigh(physaddr));
2941
2942 /* Word 3 */
2943 wqe->fcp_trsp.response_len = rsp->rsplen;
2944
2945 /* Word 6 */
2946 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com,
2947 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2948 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com,
2949 nvmewqe->sli4_xritag);
2950
2951 /* Word 7 */
2952
2953 /* Word 8 */
2954 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag;
2955
2956 /* Word 9 */
2957 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag);
2958 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid);
2959
2960 /* Word 10 */
2961 if (xc)
2962 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1);
2963
2964 /* Word 11 */
2965 /* In template wqes=0 irsp=0 irsplen=0 - good response */
2966 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) {
2967 /* Bad response - embed it */
2968 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1);
2969 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1);
2970 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com,
2971 ((rsp->rsplen >> 2) - 1));
2972 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen);
2973 }
2974
2975 /* Word 12 */
2976 wqe->fcp_trsp.rsvd_12_15[0] = 0;
2977
2978 /* Use rspbuf, NOT sg list */
2979 nsegs = 0;
2980 sgl->word2 = 0;
2981 atomic_inc(v: &tgtp->xmt_fcp_rsp);
2982 break;
2983
2984 default:
2985 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
2986 "6064 Unknown Rsp Op %d\n",
2987 rsp->op);
2988 return NULL;
2989 }
2990
2991 nvmewqe->retry = 1;
2992 nvmewqe->vport = phba->pport;
2993 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
2994 nvmewqe->ndlp = ndlp;
2995
2996 for_each_sg(rsp->sg, sgel, nsegs, i) {
2997 physaddr = sg_dma_address(sgel);
2998 cnt = sg_dma_len(sgel);
2999 sgl->addr_hi = putPaddrHigh(physaddr);
3000 sgl->addr_lo = putPaddrLow(physaddr);
3001 sgl->word2 = 0;
3002 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
3003 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset);
3004 if ((i+1) == rsp->sg_cnt)
3005 bf_set(lpfc_sli4_sge_last, sgl, 1);
3006 sgl->word2 = cpu_to_le32(sgl->word2);
3007 sgl->sge_len = cpu_to_le32(cnt);
3008 sgl++;
3009 ctxp->offset += cnt;
3010 }
3011
3012 bde = (struct ulp_bde64 *)&wqe->words[13];
3013 if (use_pbde) {
3014 /* decrement sgl ptr backwards once to first data sge */
3015 sgl--;
3016
3017 /* Words 13-15 (PBDE) */
3018 bde->addrLow = sgl->addr_lo;
3019 bde->addrHigh = sgl->addr_hi;
3020 bde->tus.f.bdeSize = le32_to_cpu(sgl->sge_len);
3021 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3022 bde->tus.w = cpu_to_le32(bde->tus.w);
3023 } else {
3024 memset(bde, 0, sizeof(struct ulp_bde64));
3025 }
3026 ctxp->state = LPFC_NVME_STE_DATA;
3027 ctxp->entry_cnt++;
3028 return nvmewqe;
3029}
3030
3031/**
3032 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
3033 * @phba: Pointer to HBA context object.
3034 * @cmdwqe: Pointer to driver command WQE object.
3035 * @rspwqe: Pointer to driver response WQE object.
3036 *
3037 * The function is called from SLI ring event handler with no
3038 * lock held. This function is the completion handler for NVME ABTS for FCP cmds
3039 * The function frees memory resources used for the NVME commands.
3040 **/
3041static void
3042lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3043 struct lpfc_iocbq *rspwqe)
3044{
3045 struct lpfc_async_xchg_ctx *ctxp;
3046 struct lpfc_nvmet_tgtport *tgtp;
3047 uint32_t result;
3048 unsigned long flags;
3049 bool released = false;
3050 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
3051
3052 ctxp = cmdwqe->context_un.axchg;
3053 result = wcqe->parameter;
3054
3055 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3056 if (ctxp->flag & LPFC_NVME_ABORT_OP)
3057 atomic_inc(v: &tgtp->xmt_fcp_abort_cmpl);
3058
3059 spin_lock_irqsave(&ctxp->ctxlock, flags);
3060 ctxp->state = LPFC_NVME_STE_DONE;
3061
3062 /* Check if we already received a free context call
3063 * and we have completed processing an abort situation.
3064 */
3065 if ((ctxp->flag & LPFC_NVME_CTX_RLS) &&
3066 !(ctxp->flag & LPFC_NVME_XBUSY)) {
3067 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3068 list_del_init(entry: &ctxp->list);
3069 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3070 released = true;
3071 }
3072 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3073 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3074 atomic_inc(v: &tgtp->xmt_abort_rsp);
3075
3076 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3077 "6165 ABORT cmpl: oxid x%x flg x%x (%d) "
3078 "WCQE: %08x %08x %08x %08x\n",
3079 ctxp->oxid, ctxp->flag, released,
3080 wcqe->word0, wcqe->total_data_placed,
3081 result, wcqe->word3);
3082
3083 cmdwqe->rsp_dmabuf = NULL;
3084 cmdwqe->bpl_dmabuf = NULL;
3085 /*
3086 * if transport has released ctx, then can reuse it. Otherwise,
3087 * will be recycled by transport release call.
3088 */
3089 if (released)
3090 lpfc_nvmet_ctxbuf_post(phba, ctx_buf: ctxp->ctxbuf);
3091
3092 /* This is the iocbq for the abort, not the command */
3093 lpfc_sli_release_iocbq(phba, cmdwqe);
3094
3095 /* Since iaab/iaar are NOT set, there is no work left.
3096 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted
3097 * should have been called already.
3098 */
3099}
3100
3101/**
3102 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS
3103 * @phba: Pointer to HBA context object.
3104 * @cmdwqe: Pointer to driver command WQE object.
3105 * @rspwqe: Pointer to driver response WQE object.
3106 *
3107 * The function is called from SLI ring event handler with no
3108 * lock held. This function is the completion handler for NVME ABTS for FCP cmds
3109 * The function frees memory resources used for the NVME commands.
3110 **/
3111static void
3112lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3113 struct lpfc_iocbq *rspwqe)
3114{
3115 struct lpfc_async_xchg_ctx *ctxp;
3116 struct lpfc_nvmet_tgtport *tgtp;
3117 unsigned long flags;
3118 uint32_t result;
3119 bool released = false;
3120 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
3121
3122 ctxp = cmdwqe->context_un.axchg;
3123 result = wcqe->parameter;
3124
3125 if (!ctxp) {
3126 /* if context is clear, related io alrady complete */
3127 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3128 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n",
3129 wcqe->word0, wcqe->total_data_placed,
3130 result, wcqe->word3);
3131 return;
3132 }
3133
3134 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3135 spin_lock_irqsave(&ctxp->ctxlock, flags);
3136 if (ctxp->flag & LPFC_NVME_ABORT_OP)
3137 atomic_inc(v: &tgtp->xmt_fcp_abort_cmpl);
3138
3139 /* Sanity check */
3140 if (ctxp->state != LPFC_NVME_STE_ABORT) {
3141 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3142 "6112 ABTS Wrong state:%d oxid x%x\n",
3143 ctxp->state, ctxp->oxid);
3144 }
3145
3146 /* Check if we already received a free context call
3147 * and we have completed processing an abort situation.
3148 */
3149 ctxp->state = LPFC_NVME_STE_DONE;
3150 if ((ctxp->flag & LPFC_NVME_CTX_RLS) &&
3151 !(ctxp->flag & LPFC_NVME_XBUSY)) {
3152 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3153 list_del_init(entry: &ctxp->list);
3154 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3155 released = true;
3156 }
3157 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3158 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3159 atomic_inc(v: &tgtp->xmt_abort_rsp);
3160
3161 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3162 "6316 ABTS cmpl oxid x%x flg x%x (%x) "
3163 "WCQE: %08x %08x %08x %08x\n",
3164 ctxp->oxid, ctxp->flag, released,
3165 wcqe->word0, wcqe->total_data_placed,
3166 result, wcqe->word3);
3167
3168 cmdwqe->rsp_dmabuf = NULL;
3169 cmdwqe->bpl_dmabuf = NULL;
3170 /*
3171 * if transport has released ctx, then can reuse it. Otherwise,
3172 * will be recycled by transport release call.
3173 */
3174 if (released)
3175 lpfc_nvmet_ctxbuf_post(phba, ctx_buf: ctxp->ctxbuf);
3176
3177 /* Since iaab/iaar are NOT set, there is no work left.
3178 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted
3179 * should have been called already.
3180 */
3181}
3182
3183/**
3184 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
3185 * @phba: Pointer to HBA context object.
3186 * @cmdwqe: Pointer to driver command WQE object.
3187 * @rspwqe: Pointer to driver response WQE object.
3188 *
3189 * The function is called from SLI ring event handler with no
3190 * lock held. This function is the completion handler for NVME ABTS for LS cmds
3191 * The function frees memory resources used for the NVME commands.
3192 **/
3193static void
3194lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3195 struct lpfc_iocbq *rspwqe)
3196{
3197 struct lpfc_async_xchg_ctx *ctxp;
3198 struct lpfc_nvmet_tgtport *tgtp;
3199 uint32_t result;
3200 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl;
3201
3202 ctxp = cmdwqe->context_un.axchg;
3203 result = wcqe->parameter;
3204
3205 if (phba->nvmet_support) {
3206 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3207 atomic_inc(v: &tgtp->xmt_ls_abort_cmpl);
3208 }
3209
3210 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3211 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n",
3212 ctxp, wcqe->word0, wcqe->total_data_placed,
3213 result, wcqe->word3);
3214
3215 if (!ctxp) {
3216 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3217 "6415 NVMET LS Abort No ctx: WCQE: "
3218 "%08x %08x %08x %08x\n",
3219 wcqe->word0, wcqe->total_data_placed,
3220 result, wcqe->word3);
3221
3222 lpfc_sli_release_iocbq(phba, cmdwqe);
3223 return;
3224 }
3225
3226 if (ctxp->state != LPFC_NVME_STE_LS_ABORT) {
3227 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3228 "6416 NVMET LS abort cmpl state mismatch: "
3229 "oxid x%x: %d %d\n",
3230 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
3231 }
3232
3233 cmdwqe->rsp_dmabuf = NULL;
3234 cmdwqe->bpl_dmabuf = NULL;
3235 lpfc_sli_release_iocbq(phba, cmdwqe);
3236 kfree(objp: ctxp);
3237}
3238
3239static int
3240lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
3241 struct lpfc_async_xchg_ctx *ctxp,
3242 uint32_t sid, uint16_t xri)
3243{
3244 struct lpfc_nvmet_tgtport *tgtp = NULL;
3245 struct lpfc_iocbq *abts_wqeq;
3246 union lpfc_wqe128 *wqe_abts;
3247 struct lpfc_nodelist *ndlp;
3248
3249 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3250 "6067 ABTS: sid %x xri x%x/x%x\n",
3251 sid, xri, ctxp->wqeq->sli4_xritag);
3252
3253 if (phba->nvmet_support && phba->targetport)
3254 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3255
3256 ndlp = lpfc_findnode_did(phba->pport, sid);
3257 if (!ndlp ||
3258 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
3259 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
3260 if (tgtp)
3261 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3262 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3263 "6134 Drop ABTS - wrong NDLP state x%x.\n",
3264 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
3265
3266 /* No failure to an ABTS request. */
3267 return 0;
3268 }
3269
3270 abts_wqeq = ctxp->wqeq;
3271 wqe_abts = &abts_wqeq->wqe;
3272
3273 /*
3274 * Since we zero the whole WQE, we need to ensure we set the WQE fields
3275 * that were initialized in lpfc_sli4_nvmet_alloc.
3276 */
3277 memset(wqe_abts, 0, sizeof(union lpfc_wqe));
3278
3279 /* Word 5 */
3280 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
3281 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
3282 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
3283 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
3284 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);
3285
3286 /* Word 6 */
3287 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
3288 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
3289 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
3290 abts_wqeq->sli4_xritag);
3291
3292 /* Word 7 */
3293 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
3294 CMD_XMIT_SEQUENCE64_WQE);
3295 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
3296 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
3297 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);
3298
3299 /* Word 8 */
3300 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;
3301
3302 /* Word 9 */
3303 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
3304 /* Needs to be set by caller */
3305 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);
3306
3307 /* Word 10 */
3308 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
3309 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
3310 LPFC_WQE_LENLOC_WORD12);
3311 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
3312 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);
3313
3314 /* Word 11 */
3315 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
3316 LPFC_WQE_CQ_ID_DEFAULT);
3317 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
3318 OTHER_COMMAND);
3319
3320 abts_wqeq->vport = phba->pport;
3321 abts_wqeq->ndlp = ndlp;
3322 abts_wqeq->context_un.axchg = ctxp;
3323 abts_wqeq->bpl_dmabuf = NULL;
3324 abts_wqeq->num_bdes = 0;
3325 /* hba_wqidx should already be setup from command we are aborting */
3326 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
3327 abts_wqeq->iocb.ulpLe = 1;
3328
3329 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3330 "6069 Issue ABTS to xri x%x reqtag x%x\n",
3331 xri, abts_wqeq->iotag);
3332 return 1;
3333}
3334
3335static int
3336lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
3337 struct lpfc_async_xchg_ctx *ctxp,
3338 uint32_t sid, uint16_t xri)
3339{
3340 struct lpfc_nvmet_tgtport *tgtp;
3341 struct lpfc_iocbq *abts_wqeq;
3342 struct lpfc_nodelist *ndlp;
3343 unsigned long flags;
3344 bool ia;
3345 int rc;
3346
3347 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3348 if (!ctxp->wqeq) {
3349 ctxp->wqeq = ctxp->ctxbuf->iocbq;
3350 ctxp->wqeq->hba_wqidx = 0;
3351 }
3352
3353 ndlp = lpfc_findnode_did(phba->pport, sid);
3354 if (!ndlp ||
3355 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
3356 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
3357 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3358 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3359 "6160 Drop ABORT - wrong NDLP state x%x.\n",
3360 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
3361
3362 /* No failure to an ABTS request. */
3363 spin_lock_irqsave(&ctxp->ctxlock, flags);
3364 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3365 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3366 return 0;
3367 }
3368
3369 /* Issue ABTS for this WQE based on iotag */
3370 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
3371 spin_lock_irqsave(&ctxp->ctxlock, flags);
3372 if (!ctxp->abort_wqeq) {
3373 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3374 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3375 "6161 ABORT failed: No wqeqs: "
3376 "xri: x%x\n", ctxp->oxid);
3377 /* No failure to an ABTS request. */
3378 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3379 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3380 return 0;
3381 }
3382 abts_wqeq = ctxp->abort_wqeq;
3383 ctxp->state = LPFC_NVME_STE_ABORT;
3384 ia = (ctxp->flag & LPFC_NVME_ABTS_RCV) ? true : false;
3385 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3386
3387 /* Announce entry to new IO submit field. */
3388 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3389 "6162 ABORT Request to rport DID x%06x "
3390 "for xri x%x x%x\n",
3391 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);
3392
3393 /* If the hba is getting reset, this flag is set. It is
3394 * cleared when the reset is complete and rings reestablished.
3395 */
3396 spin_lock_irqsave(&phba->hbalock, flags);
3397 /* driver queued commands are in process of being flushed */
3398 if (phba->hba_flag & HBA_IOQ_FLUSH) {
3399 spin_unlock_irqrestore(lock: &phba->hbalock, flags);
3400 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3401 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3402 "6163 Driver in reset cleanup - flushing "
3403 "NVME Req now. hba_flag x%x oxid x%x\n",
3404 phba->hba_flag, ctxp->oxid);
3405 lpfc_sli_release_iocbq(phba, abts_wqeq);
3406 spin_lock_irqsave(&ctxp->ctxlock, flags);
3407 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3408 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3409 return 0;
3410 }
3411
3412 /* Outstanding abort is in progress */
3413 if (abts_wqeq->cmd_flag & LPFC_DRIVER_ABORTED) {
3414 spin_unlock_irqrestore(lock: &phba->hbalock, flags);
3415 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3416 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3417 "6164 Outstanding NVME I/O Abort Request "
3418 "still pending on oxid x%x\n",
3419 ctxp->oxid);
3420 lpfc_sli_release_iocbq(phba, abts_wqeq);
3421 spin_lock_irqsave(&ctxp->ctxlock, flags);
3422 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3423 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3424 return 0;
3425 }
3426
3427 /* Ready - mark outstanding as aborted by driver. */
3428 abts_wqeq->cmd_flag |= LPFC_DRIVER_ABORTED;
3429
3430 lpfc_sli_prep_abort_xri(phba, cmdiocbq: abts_wqeq, ulp_context: ctxp->wqeq->sli4_xritag,
3431 iotag: abts_wqeq->iotag, CLASS3,
3432 LPFC_WQE_CQ_ID_DEFAULT, ia, wqec: true);
3433
3434 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
3435 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
3436 abts_wqeq->cmd_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
3437 abts_wqeq->cmd_flag |= LPFC_IO_NVME;
3438 abts_wqeq->context_un.axchg = ctxp;
3439 abts_wqeq->vport = phba->pport;
3440 if (!ctxp->hdwq)
3441 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
3442
3443 rc = lpfc_sli4_issue_wqe(phba, qp: ctxp->hdwq, pwqe: abts_wqeq);
3444 spin_unlock_irqrestore(lock: &phba->hbalock, flags);
3445 if (rc == WQE_SUCCESS) {
3446 atomic_inc(v: &tgtp->xmt_abort_sol);
3447 return 0;
3448 }
3449
3450 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3451 spin_lock_irqsave(&ctxp->ctxlock, flags);
3452 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3453 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3454 lpfc_sli_release_iocbq(phba, abts_wqeq);
3455 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3456 "6166 Failed ABORT issue_wqe with status x%x "
3457 "for oxid x%x.\n",
3458 rc, ctxp->oxid);
3459 return 1;
3460}
3461
3462static int
3463lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
3464 struct lpfc_async_xchg_ctx *ctxp,
3465 uint32_t sid, uint16_t xri)
3466{
3467 struct lpfc_nvmet_tgtport *tgtp;
3468 struct lpfc_iocbq *abts_wqeq;
3469 unsigned long flags;
3470 bool released = false;
3471 int rc;
3472
3473 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3474 if (!ctxp->wqeq) {
3475 ctxp->wqeq = ctxp->ctxbuf->iocbq;
3476 ctxp->wqeq->hba_wqidx = 0;
3477 }
3478
3479 if (ctxp->state == LPFC_NVME_STE_FREE) {
3480 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3481 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n",
3482 ctxp->state, ctxp->entry_cnt, ctxp->oxid);
3483 rc = WQE_BUSY;
3484 goto aerr;
3485 }
3486 ctxp->state = LPFC_NVME_STE_ABORT;
3487 ctxp->entry_cnt++;
3488 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
3489 if (rc == 0)
3490 goto aerr;
3491
3492 spin_lock_irqsave(&phba->hbalock, flags);
3493 abts_wqeq = ctxp->wqeq;
3494 abts_wqeq->cmd_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
3495 abts_wqeq->cmd_flag |= LPFC_IO_NVMET;
3496 if (!ctxp->hdwq)
3497 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
3498
3499 rc = lpfc_sli4_issue_wqe(phba, qp: ctxp->hdwq, pwqe: abts_wqeq);
3500 spin_unlock_irqrestore(lock: &phba->hbalock, flags);
3501 if (rc == WQE_SUCCESS) {
3502 return 0;
3503 }
3504
3505aerr:
3506 spin_lock_irqsave(&ctxp->ctxlock, flags);
3507 if (ctxp->flag & LPFC_NVME_CTX_RLS) {
3508 spin_lock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3509 list_del_init(entry: &ctxp->list);
3510 spin_unlock(lock: &phba->sli4_hba.abts_nvmet_buf_list_lock);
3511 released = true;
3512 }
3513 ctxp->flag &= ~(LPFC_NVME_ABORT_OP | LPFC_NVME_CTX_RLS);
3514 spin_unlock_irqrestore(lock: &ctxp->ctxlock, flags);
3515
3516 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3517 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3518 "6135 Failed to Issue ABTS for oxid x%x. Status x%x "
3519 "(%x)\n",
3520 ctxp->oxid, rc, released);
3521 if (released)
3522 lpfc_nvmet_ctxbuf_post(phba, ctx_buf: ctxp->ctxbuf);
3523 return 1;
3524}
3525
3526/**
3527 * lpfc_nvme_unsol_ls_issue_abort - issue ABTS on an exchange received
3528 * via async frame receive where the frame is not handled.
3529 * @phba: pointer to adapter structure
3530 * @ctxp: pointer to the asynchronously received received sequence
3531 * @sid: address of the remote port to send the ABTS to
3532 * @xri: oxid value to for the ABTS (other side's exchange id).
3533 **/
3534int
3535lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba,
3536 struct lpfc_async_xchg_ctx *ctxp,
3537 uint32_t sid, uint16_t xri)
3538{
3539 struct lpfc_nvmet_tgtport *tgtp = NULL;
3540 struct lpfc_iocbq *abts_wqeq;
3541 unsigned long flags;
3542 int rc;
3543
3544 if ((ctxp->state == LPFC_NVME_STE_LS_RCV && ctxp->entry_cnt == 1) ||
3545 (ctxp->state == LPFC_NVME_STE_LS_RSP && ctxp->entry_cnt == 2)) {
3546 ctxp->state = LPFC_NVME_STE_LS_ABORT;
3547 ctxp->entry_cnt++;
3548 } else {
3549 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3550 "6418 NVMET LS abort state mismatch "
3551 "IO x%x: %d %d\n",
3552 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
3553 ctxp->state = LPFC_NVME_STE_LS_ABORT;
3554 }
3555
3556 if (phba->nvmet_support && phba->targetport)
3557 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3558
3559 if (!ctxp->wqeq) {
3560 /* Issue ABTS for this WQE based on iotag */
3561 ctxp->wqeq = lpfc_sli_get_iocbq(phba);
3562 if (!ctxp->wqeq) {
3563 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3564 "6068 Abort failed: No wqeqs: "
3565 "xri: x%x\n", xri);
3566 /* No failure to an ABTS request. */
3567 kfree(objp: ctxp);
3568 return 0;
3569 }
3570 }
3571 abts_wqeq = ctxp->wqeq;
3572
3573 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) {
3574 rc = WQE_BUSY;
3575 goto out;
3576 }
3577
3578 spin_lock_irqsave(&phba->hbalock, flags);
3579 abts_wqeq->cmd_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
3580 abts_wqeq->cmd_flag |= LPFC_IO_NVME_LS;
3581 rc = lpfc_sli4_issue_wqe(phba, qp: ctxp->hdwq, pwqe: abts_wqeq);
3582 spin_unlock_irqrestore(lock: &phba->hbalock, flags);
3583 if (rc == WQE_SUCCESS) {
3584 if (tgtp)
3585 atomic_inc(v: &tgtp->xmt_abort_unsol);
3586 return 0;
3587 }
3588out:
3589 if (tgtp)
3590 atomic_inc(v: &tgtp->xmt_abort_rsp_error);
3591 abts_wqeq->rsp_dmabuf = NULL;
3592 abts_wqeq->bpl_dmabuf = NULL;
3593 lpfc_sli_release_iocbq(phba, abts_wqeq);
3594 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3595 "6056 Failed to Issue ABTS. Status x%x\n", rc);
3596 return 1;
3597}
3598
3599/**
3600 * lpfc_nvmet_invalidate_host
3601 *
3602 * @phba: pointer to the driver instance bound to an adapter port.
3603 * @ndlp: pointer to an lpfc_nodelist type
3604 *
3605 * This routine upcalls the nvmet transport to invalidate an NVME
3606 * host to which this target instance had active connections.
3607 */
3608void
3609lpfc_nvmet_invalidate_host(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3610{
3611 u32 ndlp_has_hh;
3612 struct lpfc_nvmet_tgtport *tgtp;
3613
3614 lpfc_printf_log(phba, KERN_INFO,
3615 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
3616 "6203 Invalidating hosthandle x%px\n",
3617 ndlp);
3618
3619 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3620 atomic_set(v: &tgtp->state, LPFC_NVMET_INV_HOST_ACTIVE);
3621
3622 spin_lock_irq(lock: &ndlp->lock);
3623 ndlp_has_hh = ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH;
3624 spin_unlock_irq(lock: &ndlp->lock);
3625
3626 /* Do not invalidate any nodes that do not have a hosthandle.
3627 * The host_release callbk will cause a node reference
3628 * count imbalance and a crash.
3629 */
3630 if (!ndlp_has_hh) {
3631 lpfc_printf_log(phba, KERN_INFO,
3632 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
3633 "6204 Skip invalidate on node x%px DID x%x\n",
3634 ndlp, ndlp->nlp_DID);
3635 return;
3636 }
3637
3638#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
3639 /* Need to get the nvmet_fc_target_port pointer here.*/
3640 nvmet_fc_invalidate_host(tgtport: phba->targetport, hosthandle: ndlp);
3641#endif
3642}
3643

source code of linux/drivers/scsi/lpfc/lpfc_nvmet.c