1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2021 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
54 static 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);
58 static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
59 struct lpfc_async_xchg_ctx *);
60 static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
61 struct lpfc_async_xchg_ctx *,
62 uint32_t, uint16_t);
63 static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
64 struct lpfc_async_xchg_ctx *,
65 uint32_t, uint16_t);
66 static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *,
67 struct lpfc_async_xchg_ctx *);
68 static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *);
69
70 static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf);
71
72 static union lpfc_wqe128 lpfc_tsend_cmd_template;
73 static union lpfc_wqe128 lpfc_treceive_cmd_template;
74 static union lpfc_wqe128 lpfc_trsp_cmd_template;
75
76 /* Setup WQE templates for NVME IOs */
77 void
lpfc_nvmet_cmd_template(void)78 lpfc_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))
216 static struct lpfc_async_xchg_ctx *
lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba * phba,u16 xri)217 lpfc_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(&phba->sli4_hba.t_active_list_lock, iflag);
232 if (found)
233 return ctxp;
234
235 return NULL;
236 }
237
238 static struct lpfc_async_xchg_ctx *
lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba * phba,u16 oxid,u32 sid)239 lpfc_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(&phba->sli4_hba.t_active_list_lock, iflag);
254 if (found)
255 return ctxp;
256
257 return NULL;
258 }
259 #endif
260
261 static void
lpfc_nvmet_defer_release(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp)262 lpfc_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(&phba->sli4_hba.t_active_list_lock);
276 list_del(&ctxp->list);
277 spin_unlock(&phba->sli4_hba.t_active_list_lock);
278 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
279 list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
280 spin_unlock(&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 * @wcqe: Pointer to driver response CQE 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 **/
294 void
__lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)295 __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
296 struct lpfc_wcqe_complete *wcqe)
297 {
298 struct lpfc_async_xchg_ctx *axchg = cmdwqe->context2;
299 struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp;
300 uint32_t status, result;
301
302 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
303 result = wcqe->parameter;
304
305 if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) {
306 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
307 "6410 NVMEx LS cmpl state mismatch IO x%x: "
308 "%d %d\n",
309 axchg->oxid, axchg->state, axchg->entry_cnt);
310 }
311
312 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x result x%x\n",
313 axchg->oxid, status, result);
314
315 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
316 "6038 NVMEx LS rsp cmpl: %d %d oxid x%x\n",
317 status, result, axchg->oxid);
318
319 lpfc_nlp_put(cmdwqe->context1);
320 cmdwqe->context2 = NULL;
321 cmdwqe->context3 = NULL;
322 lpfc_sli_release_iocbq(phba, cmdwqe);
323 ls_rsp->done(ls_rsp);
324 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
325 "6200 NVMEx LS rsp cmpl done status %d oxid x%x\n",
326 status, axchg->oxid);
327 kfree(axchg);
328 }
329
330 /**
331 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response
332 * @phba: Pointer to HBA context object.
333 * @cmdwqe: Pointer to driver command WQE object.
334 * @wcqe: Pointer to driver response CQE object.
335 *
336 * The function is called from SLI ring event handler with no
337 * lock held. This function is the completion handler for NVME LS commands
338 * The function updates any states and statistics, then calls the
339 * generic completion handler to free resources.
340 **/
341 static void
lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)342 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
343 struct lpfc_wcqe_complete *wcqe)
344 {
345 struct lpfc_nvmet_tgtport *tgtp;
346 uint32_t status, result;
347
348 if (!phba->targetport)
349 goto finish;
350
351 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK;
352 result = wcqe->parameter;
353
354 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
355 if (tgtp) {
356 if (status) {
357 atomic_inc(&tgtp->xmt_ls_rsp_error);
358 if (result == IOERR_ABORT_REQUESTED)
359 atomic_inc(&tgtp->xmt_ls_rsp_aborted);
360 if (bf_get(lpfc_wcqe_c_xb, wcqe))
361 atomic_inc(&tgtp->xmt_ls_rsp_xb_set);
362 } else {
363 atomic_inc(&tgtp->xmt_ls_rsp_cmpl);
364 }
365 }
366
367 finish:
368 __lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, wcqe);
369 }
370
371 /**
372 * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context
373 * @phba: HBA buffer is associated with
374 * @ctx_buf: ctx buffer context
375 *
376 * Description: Frees the given DMA buffer in the appropriate way given by
377 * reposting it to its associated RQ so it can be reused.
378 *
379 * Notes: Takes phba->hbalock. Can be called with or without other locks held.
380 *
381 * Returns: None
382 **/
383 void
lpfc_nvmet_ctxbuf_post(struct lpfc_hba * phba,struct lpfc_nvmet_ctxbuf * ctx_buf)384 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf)
385 {
386 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
387 struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context;
388 struct lpfc_nvmet_tgtport *tgtp;
389 struct fc_frame_header *fc_hdr;
390 struct rqb_dmabuf *nvmebuf;
391 struct lpfc_nvmet_ctx_info *infop;
392 uint32_t size, oxid, sid;
393 int cpu;
394 unsigned long iflag;
395
396 if (ctxp->state == LPFC_NVME_STE_FREE) {
397 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
398 "6411 NVMET free, already free IO x%x: %d %d\n",
399 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
400 }
401
402 if (ctxp->rqb_buffer) {
403 spin_lock_irqsave(&ctxp->ctxlock, iflag);
404 nvmebuf = ctxp->rqb_buffer;
405 /* check if freed in another path whilst acquiring lock */
406 if (nvmebuf) {
407 ctxp->rqb_buffer = NULL;
408 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
409 ctxp->flag &= ~LPFC_NVME_CTX_REUSE_WQ;
410 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
411 nvmebuf->hrq->rqbp->rqb_free_buffer(phba,
412 nvmebuf);
413 } else {
414 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
415 /* repost */
416 lpfc_rq_buf_free(phba, &nvmebuf->hbuf);
417 }
418 } else {
419 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
420 }
421 }
422 ctxp->state = LPFC_NVME_STE_FREE;
423
424 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
425 if (phba->sli4_hba.nvmet_io_wait_cnt) {
426 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list,
427 nvmebuf, struct rqb_dmabuf,
428 hbuf.list);
429 phba->sli4_hba.nvmet_io_wait_cnt--;
430 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
431 iflag);
432
433 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
434 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
435 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
436 size = nvmebuf->bytes_recv;
437 sid = sli4_sid_from_fc_hdr(fc_hdr);
438
439 ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context;
440 ctxp->wqeq = NULL;
441 ctxp->offset = 0;
442 ctxp->phba = phba;
443 ctxp->size = size;
444 ctxp->oxid = oxid;
445 ctxp->sid = sid;
446 ctxp->state = LPFC_NVME_STE_RCV;
447 ctxp->entry_cnt = 1;
448 ctxp->flag = 0;
449 ctxp->ctxbuf = ctx_buf;
450 ctxp->rqb_buffer = (void *)nvmebuf;
451 spin_lock_init(&ctxp->ctxlock);
452
453 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
454 /* NOTE: isr time stamp is stale when context is re-assigned*/
455 if (ctxp->ts_isr_cmd) {
456 ctxp->ts_cmd_nvme = 0;
457 ctxp->ts_nvme_data = 0;
458 ctxp->ts_data_wqput = 0;
459 ctxp->ts_isr_data = 0;
460 ctxp->ts_data_nvme = 0;
461 ctxp->ts_nvme_status = 0;
462 ctxp->ts_status_wqput = 0;
463 ctxp->ts_isr_status = 0;
464 ctxp->ts_status_nvme = 0;
465 }
466 #endif
467 atomic_inc(&tgtp->rcv_fcp_cmd_in);
468
469 /* Indicate that a replacement buffer has been posted */
470 spin_lock_irqsave(&ctxp->ctxlock, iflag);
471 ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ;
472 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
473
474 if (!queue_work(phba->wq, &ctx_buf->defer_work)) {
475 atomic_inc(&tgtp->rcv_fcp_cmd_drop);
476 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
477 "6181 Unable to queue deferred work "
478 "for oxid x%x. "
479 "FCP Drop IO [x%x x%x x%x]\n",
480 ctxp->oxid,
481 atomic_read(&tgtp->rcv_fcp_cmd_in),
482 atomic_read(&tgtp->rcv_fcp_cmd_out),
483 atomic_read(&tgtp->xmt_fcp_release));
484
485 spin_lock_irqsave(&ctxp->ctxlock, iflag);
486 lpfc_nvmet_defer_release(phba, ctxp);
487 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
488 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
489 }
490 return;
491 }
492 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
493
494 /*
495 * Use the CPU context list, from the MRQ the IO was received on
496 * (ctxp->idx), to save context structure.
497 */
498 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag);
499 list_del_init(&ctxp->list);
500 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag);
501 cpu = raw_smp_processor_id();
502 infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx);
503 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag);
504 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
505 infop->nvmet_ctx_list_cnt++;
506 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag);
507 #endif
508 }
509
510 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
511 static void
lpfc_nvmet_ktime(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp)512 lpfc_nvmet_ktime(struct lpfc_hba *phba,
513 struct lpfc_async_xchg_ctx *ctxp)
514 {
515 uint64_t seg1, seg2, seg3, seg4, seg5;
516 uint64_t seg6, seg7, seg8, seg9, seg10;
517 uint64_t segsum;
518
519 if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme ||
520 !ctxp->ts_nvme_data || !ctxp->ts_data_wqput ||
521 !ctxp->ts_isr_data || !ctxp->ts_data_nvme ||
522 !ctxp->ts_nvme_status || !ctxp->ts_status_wqput ||
523 !ctxp->ts_isr_status || !ctxp->ts_status_nvme)
524 return;
525
526 if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd)
527 return;
528 if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme)
529 return;
530 if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data)
531 return;
532 if (ctxp->ts_nvme_data > ctxp->ts_data_wqput)
533 return;
534 if (ctxp->ts_data_wqput > ctxp->ts_isr_data)
535 return;
536 if (ctxp->ts_isr_data > ctxp->ts_data_nvme)
537 return;
538 if (ctxp->ts_data_nvme > ctxp->ts_nvme_status)
539 return;
540 if (ctxp->ts_nvme_status > ctxp->ts_status_wqput)
541 return;
542 if (ctxp->ts_status_wqput > ctxp->ts_isr_status)
543 return;
544 if (ctxp->ts_isr_status > ctxp->ts_status_nvme)
545 return;
546 /*
547 * Segment 1 - Time from FCP command received by MSI-X ISR
548 * to FCP command is passed to NVME Layer.
549 * Segment 2 - Time from FCP command payload handed
550 * off to NVME Layer to Driver receives a Command op
551 * from NVME Layer.
552 * Segment 3 - Time from Driver receives a Command op
553 * from NVME Layer to Command is put on WQ.
554 * Segment 4 - Time from Driver WQ put is done
555 * to MSI-X ISR for Command cmpl.
556 * Segment 5 - Time from MSI-X ISR for Command cmpl to
557 * Command cmpl is passed to NVME Layer.
558 * Segment 6 - Time from Command cmpl is passed to NVME
559 * Layer to Driver receives a RSP op from NVME Layer.
560 * Segment 7 - Time from Driver receives a RSP op from
561 * NVME Layer to WQ put is done on TRSP FCP Status.
562 * Segment 8 - Time from Driver WQ put is done on TRSP
563 * FCP Status to MSI-X ISR for TRSP cmpl.
564 * Segment 9 - Time from MSI-X ISR for TRSP cmpl to
565 * TRSP cmpl is passed to NVME Layer.
566 * Segment 10 - Time from FCP command received by
567 * MSI-X ISR to command is completed on wire.
568 * (Segments 1 thru 8) for READDATA / WRITEDATA
569 * (Segments 1 thru 4) for READDATA_RSP
570 */
571 seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd;
572 segsum = seg1;
573
574 seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd;
575 if (segsum > seg2)
576 return;
577 seg2 -= segsum;
578 segsum += seg2;
579
580 seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd;
581 if (segsum > seg3)
582 return;
583 seg3 -= segsum;
584 segsum += seg3;
585
586 seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd;
587 if (segsum > seg4)
588 return;
589 seg4 -= segsum;
590 segsum += seg4;
591
592 seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd;
593 if (segsum > seg5)
594 return;
595 seg5 -= segsum;
596 segsum += seg5;
597
598
599 /* For auto rsp commands seg6 thru seg10 will be 0 */
600 if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) {
601 seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd;
602 if (segsum > seg6)
603 return;
604 seg6 -= segsum;
605 segsum += seg6;
606
607 seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd;
608 if (segsum > seg7)
609 return;
610 seg7 -= segsum;
611 segsum += seg7;
612
613 seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd;
614 if (segsum > seg8)
615 return;
616 seg8 -= segsum;
617 segsum += seg8;
618
619 seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd;
620 if (segsum > seg9)
621 return;
622 seg9 -= segsum;
623 segsum += seg9;
624
625 if (ctxp->ts_isr_status < ctxp->ts_isr_cmd)
626 return;
627 seg10 = (ctxp->ts_isr_status -
628 ctxp->ts_isr_cmd);
629 } else {
630 if (ctxp->ts_isr_data < ctxp->ts_isr_cmd)
631 return;
632 seg6 = 0;
633 seg7 = 0;
634 seg8 = 0;
635 seg9 = 0;
636 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd);
637 }
638
639 phba->ktime_seg1_total += seg1;
640 if (seg1 < phba->ktime_seg1_min)
641 phba->ktime_seg1_min = seg1;
642 else if (seg1 > phba->ktime_seg1_max)
643 phba->ktime_seg1_max = seg1;
644
645 phba->ktime_seg2_total += seg2;
646 if (seg2 < phba->ktime_seg2_min)
647 phba->ktime_seg2_min = seg2;
648 else if (seg2 > phba->ktime_seg2_max)
649 phba->ktime_seg2_max = seg2;
650
651 phba->ktime_seg3_total += seg3;
652 if (seg3 < phba->ktime_seg3_min)
653 phba->ktime_seg3_min = seg3;
654 else if (seg3 > phba->ktime_seg3_max)
655 phba->ktime_seg3_max = seg3;
656
657 phba->ktime_seg4_total += seg4;
658 if (seg4 < phba->ktime_seg4_min)
659 phba->ktime_seg4_min = seg4;
660 else if (seg4 > phba->ktime_seg4_max)
661 phba->ktime_seg4_max = seg4;
662
663 phba->ktime_seg5_total += seg5;
664 if (seg5 < phba->ktime_seg5_min)
665 phba->ktime_seg5_min = seg5;
666 else if (seg5 > phba->ktime_seg5_max)
667 phba->ktime_seg5_max = seg5;
668
669 phba->ktime_data_samples++;
670 if (!seg6)
671 goto out;
672
673 phba->ktime_seg6_total += seg6;
674 if (seg6 < phba->ktime_seg6_min)
675 phba->ktime_seg6_min = seg6;
676 else if (seg6 > phba->ktime_seg6_max)
677 phba->ktime_seg6_max = seg6;
678
679 phba->ktime_seg7_total += seg7;
680 if (seg7 < phba->ktime_seg7_min)
681 phba->ktime_seg7_min = seg7;
682 else if (seg7 > phba->ktime_seg7_max)
683 phba->ktime_seg7_max = seg7;
684
685 phba->ktime_seg8_total += seg8;
686 if (seg8 < phba->ktime_seg8_min)
687 phba->ktime_seg8_min = seg8;
688 else if (seg8 > phba->ktime_seg8_max)
689 phba->ktime_seg8_max = seg8;
690
691 phba->ktime_seg9_total += seg9;
692 if (seg9 < phba->ktime_seg9_min)
693 phba->ktime_seg9_min = seg9;
694 else if (seg9 > phba->ktime_seg9_max)
695 phba->ktime_seg9_max = seg9;
696 out:
697 phba->ktime_seg10_total += seg10;
698 if (seg10 < phba->ktime_seg10_min)
699 phba->ktime_seg10_min = seg10;
700 else if (seg10 > phba->ktime_seg10_max)
701 phba->ktime_seg10_max = seg10;
702 phba->ktime_status_samples++;
703 }
704 #endif
705
706 /**
707 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response
708 * @phba: Pointer to HBA context object.
709 * @cmdwqe: Pointer to driver command WQE object.
710 * @wcqe: Pointer to driver response CQE object.
711 *
712 * The function is called from SLI ring event handler with no
713 * lock held. This function is the completion handler for NVME FCP commands
714 * The function frees memory resources used for the NVME commands.
715 **/
716 static void
lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)717 lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
718 struct lpfc_wcqe_complete *wcqe)
719 {
720 struct lpfc_nvmet_tgtport *tgtp;
721 struct nvmefc_tgt_fcp_req *rsp;
722 struct lpfc_async_xchg_ctx *ctxp;
723 uint32_t status, result, op, start_clean, logerr;
724 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
725 int id;
726 #endif
727
728 ctxp = cmdwqe->context2;
729 ctxp->flag &= ~LPFC_NVME_IO_INP;
730
731 rsp = &ctxp->hdlrctx.fcp_req;
732 op = rsp->op;
733
734 status = bf_get(lpfc_wcqe_c_status, wcqe);
735 result = wcqe->parameter;
736
737 if (phba->targetport)
738 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
739 else
740 tgtp = NULL;
741
742 lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n",
743 ctxp->oxid, op, status);
744
745 if (status) {
746 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
747 rsp->transferred_length = 0;
748 if (tgtp) {
749 atomic_inc(&tgtp->xmt_fcp_rsp_error);
750 if (result == IOERR_ABORT_REQUESTED)
751 atomic_inc(&tgtp->xmt_fcp_rsp_aborted);
752 }
753
754 logerr = LOG_NVME_IOERR;
755
756 /* pick up SLI4 exhange busy condition */
757 if (bf_get(lpfc_wcqe_c_xb, wcqe)) {
758 ctxp->flag |= LPFC_NVME_XBUSY;
759 logerr |= LOG_NVME_ABTS;
760 if (tgtp)
761 atomic_inc(&tgtp->xmt_fcp_rsp_xb_set);
762
763 } else {
764 ctxp->flag &= ~LPFC_NVME_XBUSY;
765 }
766
767 lpfc_printf_log(phba, KERN_INFO, logerr,
768 "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x "
769 "XBUSY:x%x\n",
770 ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag,
771 status, result, ctxp->flag);
772
773 } else {
774 rsp->fcp_error = NVME_SC_SUCCESS;
775 if (op == NVMET_FCOP_RSP)
776 rsp->transferred_length = rsp->rsplen;
777 else
778 rsp->transferred_length = rsp->transfer_length;
779 if (tgtp)
780 atomic_inc(&tgtp->xmt_fcp_rsp_cmpl);
781 }
782
783 if ((op == NVMET_FCOP_READDATA_RSP) ||
784 (op == NVMET_FCOP_RSP)) {
785 /* Sanity check */
786 ctxp->state = LPFC_NVME_STE_DONE;
787 ctxp->entry_cnt++;
788
789 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
790 if (ctxp->ts_cmd_nvme) {
791 if (rsp->op == NVMET_FCOP_READDATA_RSP) {
792 ctxp->ts_isr_data =
793 cmdwqe->isr_timestamp;
794 ctxp->ts_data_nvme =
795 ktime_get_ns();
796 ctxp->ts_nvme_status =
797 ctxp->ts_data_nvme;
798 ctxp->ts_status_wqput =
799 ctxp->ts_data_nvme;
800 ctxp->ts_isr_status =
801 ctxp->ts_data_nvme;
802 ctxp->ts_status_nvme =
803 ctxp->ts_data_nvme;
804 } else {
805 ctxp->ts_isr_status =
806 cmdwqe->isr_timestamp;
807 ctxp->ts_status_nvme =
808 ktime_get_ns();
809 }
810 }
811 #endif
812 rsp->done(rsp);
813 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
814 if (ctxp->ts_cmd_nvme)
815 lpfc_nvmet_ktime(phba, ctxp);
816 #endif
817 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */
818 } else {
819 ctxp->entry_cnt++;
820 start_clean = offsetof(struct lpfc_iocbq, iocb_flag);
821 memset(((char *)cmdwqe) + start_clean, 0,
822 (sizeof(struct lpfc_iocbq) - start_clean));
823 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
824 if (ctxp->ts_cmd_nvme) {
825 ctxp->ts_isr_data = cmdwqe->isr_timestamp;
826 ctxp->ts_data_nvme = ktime_get_ns();
827 }
828 #endif
829 rsp->done(rsp);
830 }
831 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
832 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) {
833 id = raw_smp_processor_id();
834 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io);
835 if (ctxp->cpu != id)
836 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
837 "6704 CPU Check cmdcmpl: "
838 "cpu %d expect %d\n",
839 id, ctxp->cpu);
840 }
841 #endif
842 }
843
844 /**
845 * __lpfc_nvme_xmt_ls_rsp - Generic service routine to issue transmit
846 * an NVME LS rsp for a prior NVME LS request that was received.
847 * @axchg: pointer to exchange context for the NVME LS request the response
848 * is for.
849 * @ls_rsp: pointer to the transport LS RSP that is to be sent
850 * @xmt_ls_rsp_cmp: completion routine to call upon RSP transmit done
851 *
852 * This routine is used to format and send a WQE to transmit a NVME LS
853 * Response. The response is for a prior NVME LS request that was
854 * received and posted to the transport.
855 *
856 * Returns:
857 * 0 : if response successfully transmit
858 * non-zero : if response failed to transmit, of the form -Exxx.
859 **/
860 int
__lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx * axchg,struct nvmefc_ls_rsp * ls_rsp,void (* xmt_ls_rsp_cmp)(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe))861 __lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg,
862 struct nvmefc_ls_rsp *ls_rsp,
863 void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba,
864 struct lpfc_iocbq *cmdwqe,
865 struct lpfc_wcqe_complete *wcqe))
866 {
867 struct lpfc_hba *phba = axchg->phba;
868 struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer;
869 struct lpfc_iocbq *nvmewqeq;
870 struct lpfc_dmabuf dmabuf;
871 struct ulp_bde64 bpl;
872 int rc;
873
874 if (phba->pport->load_flag & FC_UNLOADING)
875 return -ENODEV;
876
877 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
878 "6023 NVMEx LS rsp oxid x%x\n", axchg->oxid);
879
880 if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) {
881 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
882 "6412 NVMEx LS rsp state mismatch "
883 "oxid x%x: %d %d\n",
884 axchg->oxid, axchg->state, axchg->entry_cnt);
885 return -EALREADY;
886 }
887 axchg->state = LPFC_NVME_STE_LS_RSP;
888 axchg->entry_cnt++;
889
890 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, ls_rsp->rspdma,
891 ls_rsp->rsplen);
892 if (nvmewqeq == NULL) {
893 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
894 "6150 NVMEx LS Drop Rsp x%x: Prep\n",
895 axchg->oxid);
896 rc = -ENOMEM;
897 goto out_free_buf;
898 }
899
900 /* Save numBdes for bpl2sgl */
901 nvmewqeq->rsvd2 = 1;
902 nvmewqeq->hba_wqidx = 0;
903 nvmewqeq->context3 = &dmabuf;
904 dmabuf.virt = &bpl;
905 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow;
906 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh;
907 bpl.tus.f.bdeSize = ls_rsp->rsplen;
908 bpl.tus.f.bdeFlags = 0;
909 bpl.tus.w = le32_to_cpu(bpl.tus.w);
910 /*
911 * Note: although we're using stack space for the dmabuf, the
912 * call to lpfc_sli4_issue_wqe is synchronous, so it will not
913 * be referenced after it returns back to this routine.
914 */
915
916 nvmewqeq->wqe_cmpl = xmt_ls_rsp_cmp;
917 nvmewqeq->iocb_cmpl = NULL;
918 nvmewqeq->context2 = 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, axchg->hdwq, nvmewqeq);
924
925 /* clear to be sure there's no reference */
926 nvmewqeq->context3 = 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->context1);
944
945 out_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, axchg, axchg->sid, 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 **/
978 static int
lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port * tgtport,struct nvmefc_ls_rsp * ls_rsp)979 lpfc_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, lpfc_nvmet_xmt_ls_rsp_cmp);
991
992 if (rc) {
993 atomic_inc(&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(&nvmep->xmt_ls_abort);
1001 return rc;
1002 }
1003
1004 atomic_inc(&nvmep->xmt_ls_rsp);
1005 return 0;
1006 }
1007
1008 static int
lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port * tgtport,struct nvmefc_tgt_fcp_req * rsp)1009 lpfc_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(&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(&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->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp;
1076 nvmewqeq->iocb_cmpl = NULL;
1077 nvmewqeq->context2 = ctxp;
1078 nvmewqeq->iocb_flag |= LPFC_IO_NVMET;
1079 ctxp->wqeq->hba_wqidx = rsp->hwqid;
1080
1081 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n",
1082 ctxp->oxid, rsp->op, rsp->rsplen);
1083
1084 ctxp->flag |= LPFC_NVME_IO_INP;
1085 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq);
1086 if (rc == WQE_SUCCESS) {
1087 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
1088 if (!ctxp->ts_cmd_nvme)
1089 return 0;
1090 if (rsp->op == NVMET_FCOP_RSP)
1091 ctxp->ts_status_wqput = ktime_get_ns();
1092 else
1093 ctxp->ts_data_wqput = ktime_get_ns();
1094 #endif
1095 return 0;
1096 }
1097
1098 if (rc == -EBUSY) {
1099 /*
1100 * WQ was full, so queue nvmewqeq to be sent after
1101 * WQE release CQE
1102 */
1103 ctxp->flag |= LPFC_NVME_DEFER_WQFULL;
1104 wq = ctxp->hdwq->io_wq;
1105 pring = wq->pring;
1106 spin_lock_irqsave(&pring->ring_lock, iflags);
1107 list_add_tail(&nvmewqeq->list, &wq->wqfull_list);
1108 wq->q_flag |= HBA_NVMET_WQFULL;
1109 spin_unlock_irqrestore(&pring->ring_lock, iflags);
1110 atomic_inc(&lpfc_nvmep->defer_wqfull);
1111 return 0;
1112 }
1113
1114 /* Give back resources */
1115 atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
1116 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1117 "6153 FCP Drop IO x%x: Issue: %d\n",
1118 ctxp->oxid, rc);
1119
1120 ctxp->wqeq->hba_wqidx = 0;
1121 nvmewqeq->context2 = NULL;
1122 nvmewqeq->context3 = NULL;
1123 rc = -EBUSY;
1124 aerr:
1125 return rc;
1126 }
1127
1128 static void
lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port * targetport)1129 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport)
1130 {
1131 struct lpfc_nvmet_tgtport *tport = targetport->private;
1132
1133 /* release any threads waiting for the unreg to complete */
1134 if (tport->phba->targetport)
1135 complete(tport->tport_unreg_cmp);
1136 }
1137
1138 static void
lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port * tgtport,struct nvmefc_tgt_fcp_req * req)1139 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport,
1140 struct nvmefc_tgt_fcp_req *req)
1141 {
1142 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
1143 struct lpfc_async_xchg_ctx *ctxp =
1144 container_of(req, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1145 struct lpfc_hba *phba = ctxp->phba;
1146 struct lpfc_queue *wq;
1147 unsigned long flags;
1148
1149 if (phba->pport->load_flag & FC_UNLOADING)
1150 return;
1151
1152 if (!ctxp->hdwq)
1153 ctxp->hdwq = &phba->sli4_hba.hdwq[0];
1154
1155 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1156 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n",
1157 ctxp->oxid, ctxp->flag, ctxp->state);
1158
1159 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n",
1160 ctxp->oxid, ctxp->flag, ctxp->state);
1161
1162 atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
1163
1164 spin_lock_irqsave(&ctxp->ctxlock, flags);
1165
1166 /* Since iaab/iaar are NOT set, we need to check
1167 * if the firmware is in process of aborting IO
1168 */
1169 if (ctxp->flag & (LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP)) {
1170 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
1171 return;
1172 }
1173 ctxp->flag |= LPFC_NVME_ABORT_OP;
1174
1175 if (ctxp->flag & LPFC_NVME_DEFER_WQFULL) {
1176 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
1177 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1178 ctxp->oxid);
1179 wq = ctxp->hdwq->io_wq;
1180 lpfc_nvmet_wqfull_flush(phba, wq, ctxp);
1181 return;
1182 }
1183 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
1184
1185 /* A state of LPFC_NVME_STE_RCV means we have just received
1186 * the NVME command and have not started processing it.
1187 * (by issuing any IO WQEs on this exchange yet)
1188 */
1189 if (ctxp->state == LPFC_NVME_STE_RCV)
1190 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1191 ctxp->oxid);
1192 else
1193 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1194 ctxp->oxid);
1195 }
1196
1197 static void
lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port * tgtport,struct nvmefc_tgt_fcp_req * rsp)1198 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport,
1199 struct nvmefc_tgt_fcp_req *rsp)
1200 {
1201 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private;
1202 struct lpfc_async_xchg_ctx *ctxp =
1203 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1204 struct lpfc_hba *phba = ctxp->phba;
1205 unsigned long flags;
1206 bool aborting = false;
1207
1208 spin_lock_irqsave(&ctxp->ctxlock, flags);
1209 if (ctxp->flag & LPFC_NVME_XBUSY)
1210 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
1211 "6027 NVMET release with XBUSY flag x%x"
1212 " oxid x%x\n",
1213 ctxp->flag, ctxp->oxid);
1214 else if (ctxp->state != LPFC_NVME_STE_DONE &&
1215 ctxp->state != LPFC_NVME_STE_ABORT)
1216 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1217 "6413 NVMET release bad state %d %d oxid x%x\n",
1218 ctxp->state, ctxp->entry_cnt, ctxp->oxid);
1219
1220 if ((ctxp->flag & LPFC_NVME_ABORT_OP) ||
1221 (ctxp->flag & LPFC_NVME_XBUSY)) {
1222 aborting = true;
1223 /* let the abort path do the real release */
1224 lpfc_nvmet_defer_release(phba, ctxp);
1225 }
1226 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
1227
1228 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid,
1229 ctxp->state, aborting);
1230
1231 atomic_inc(&lpfc_nvmep->xmt_fcp_release);
1232 ctxp->flag &= ~LPFC_NVME_TNOTIFY;
1233
1234 if (aborting)
1235 return;
1236
1237 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1238 }
1239
1240 static void
lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port * tgtport,struct nvmefc_tgt_fcp_req * rsp)1241 lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport,
1242 struct nvmefc_tgt_fcp_req *rsp)
1243 {
1244 struct lpfc_nvmet_tgtport *tgtp;
1245 struct lpfc_async_xchg_ctx *ctxp =
1246 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req);
1247 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer;
1248 struct lpfc_hba *phba = ctxp->phba;
1249 unsigned long iflag;
1250
1251
1252 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n",
1253 ctxp->oxid, ctxp->size, raw_smp_processor_id());
1254
1255 if (!nvmebuf) {
1256 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
1257 "6425 Defer rcv: no buffer oxid x%x: "
1258 "flg %x ste %x\n",
1259 ctxp->oxid, ctxp->flag, ctxp->state);
1260 return;
1261 }
1262
1263 tgtp = phba->targetport->private;
1264 if (tgtp)
1265 atomic_inc(&tgtp->rcv_fcp_cmd_defer);
1266
1267 /* Free the nvmebuf since a new buffer already replaced it */
1268 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
1269 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1270 ctxp->rqb_buffer = NULL;
1271 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1272 }
1273
1274 /**
1275 * lpfc_nvmet_ls_req_cmp - completion handler for a nvme ls request
1276 * @phba: Pointer to HBA context object
1277 * @cmdwqe: Pointer to driver command WQE object.
1278 * @wcqe: Pointer to driver response CQE object.
1279 *
1280 * This function is the completion handler for NVME LS requests.
1281 * The function updates any states and statistics, then calls the
1282 * generic completion handler to finish completion of the request.
1283 **/
1284 static void
lpfc_nvmet_ls_req_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)1285 lpfc_nvmet_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
1286 struct lpfc_wcqe_complete *wcqe)
1287 {
1288 __lpfc_nvme_ls_req_cmp(phba, 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 **/
1305 static int
lpfc_nvmet_ls_req(struct nvmet_fc_target_port * targetport,void * hosthandle,struct nvmefc_ls_req * pnvme_lsreq)1306 lpfc_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(&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(phba->pport, ndlp, pnvme_lsreq,
1330 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 **/
1345 static void
lpfc_nvmet_ls_abort(struct nvmet_fc_target_port * targetport,void * hosthandle,struct nvmefc_ls_req * pnvme_lsreq)1346 lpfc_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(phba->pport, ndlp, pnvme_lsreq);
1362 if (!ret)
1363 atomic_inc(&lpfc_nvmet->xmt_ls_abort);
1364 }
1365
1366 static void
lpfc_nvmet_host_release(void * hosthandle)1367 lpfc_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(&ndlp->lock);
1383 ndlp->fc4_xpt_flags &= ~NLP_XPT_HAS_HH;
1384 spin_unlock_irq(&ndlp->lock);
1385 lpfc_nlp_put(ndlp);
1386 atomic_set(&tgtp->state, 0);
1387 }
1388
1389 static void
lpfc_nvmet_discovery_event(struct nvmet_fc_target_port * tgtport)1390 lpfc_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(phba->pport, 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
1405 static 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
1429 static void
__lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba * phba,struct lpfc_nvmet_ctx_info * infop)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(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1440 list_del_init(&ctx_buf->list);
1441 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1442
1443 spin_lock(&phba->hbalock);
1444 __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag);
1445 spin_unlock(&phba->hbalock);
1446
1447 ctx_buf->sglq->state = SGL_FREED;
1448 ctx_buf->sglq->ndlp = NULL;
1449
1450 spin_lock(&phba->sli4_hba.sgl_list_lock);
1451 list_add_tail(&ctx_buf->sglq->list,
1452 &phba->sli4_hba.lpfc_nvmet_sgl_list);
1453 spin_unlock(&phba->sli4_hba.sgl_list_lock);
1454
1455 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
1456 kfree(ctx_buf->context);
1457 }
1458 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags);
1459 }
1460
1461 static void
lpfc_nvmet_cleanup_io_context(struct lpfc_hba * phba)1462 lpfc_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 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(phba->sli4_hba.nvmet_ctx_info);
1480 phba->sli4_hba.nvmet_ctx_info = NULL;
1481 }
1482
1483 static int
lpfc_nvmet_setup_io_context(struct lpfc_hba * phba)1484 lpfc_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 phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq,
1499 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(&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(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(sizeof(*ctx_buf->context),
1565 GFP_KERNEL);
1566 if (!ctx_buf->context) {
1567 kfree(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(ctx_buf->context);
1579 kfree(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->iocb_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->context1 = NULL;
1592 spin_lock(&phba->sli4_hba.sgl_list_lock);
1593 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq);
1594 spin_unlock(&phba->sli4_hba.sgl_list_lock);
1595 if (!ctx_buf->sglq) {
1596 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq);
1597 kfree(ctx_buf->context);
1598 kfree(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(&infop->nvmet_ctx_list_lock);
1612 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list);
1613 infop->nvmet_ctx_list_cnt++;
1614 spin_unlock(&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 = cpumask_next(cpu, cpu_present_mask);
1624 if (cpu == nr_cpu_ids)
1625 cpu = cpumask_first(cpu_present_mask);
1626
1627 }
1628
1629 for_each_present_cpu(i) {
1630 for (j = 0; j < phba->cfg_nvmet_mrq; j++) {
1631 infop = lpfc_get_ctx_list(phba, i, j);
1632 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
1633 "6408 TOTAL NVMET ctx for CPU %d "
1634 "MRQ %d: cnt %d nextcpu x%px\n",
1635 i, j, infop->nvmet_ctx_list_cnt,
1636 infop->nvmet_ctx_next_cpu);
1637 }
1638 }
1639 return 0;
1640 }
1641
1642 int
lpfc_nvmet_create_targetport(struct lpfc_hba * phba)1643 lpfc_nvmet_create_targetport(struct lpfc_hba *phba)
1644 {
1645 struct lpfc_vport *vport = phba->pport;
1646 struct lpfc_nvmet_tgtport *tgtp;
1647 struct nvmet_fc_port_info pinfo;
1648 int error;
1649
1650 if (phba->targetport)
1651 return 0;
1652
1653 error = lpfc_nvmet_setup_io_context(phba);
1654 if (error)
1655 return error;
1656
1657 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info));
1658 pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
1659 pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn);
1660 pinfo.port_id = vport->fc_myDID;
1661
1662 /* We need to tell the transport layer + 1 because it takes page
1663 * alignment into account. When space for the SGL is allocated we
1664 * allocate + 3, one for cmd, one for rsp and one for this alignment
1665 */
1666 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1;
1667 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue;
1668 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP;
1669
1670 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1671 error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
1672 &phba->pcidev->dev,
1673 &phba->targetport);
1674 #else
1675 error = -ENOENT;
1676 #endif
1677 if (error) {
1678 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1679 "6025 Cannot register NVME targetport x%x: "
1680 "portnm %llx nodenm %llx segs %d qs %d\n",
1681 error,
1682 pinfo.port_name, pinfo.node_name,
1683 lpfc_tgttemplate.max_sgl_segments,
1684 lpfc_tgttemplate.max_hw_queues);
1685 phba->targetport = NULL;
1686 phba->nvmet_support = 0;
1687
1688 lpfc_nvmet_cleanup_io_context(phba);
1689
1690 } else {
1691 tgtp = (struct lpfc_nvmet_tgtport *)
1692 phba->targetport->private;
1693 tgtp->phba = phba;
1694
1695 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
1696 "6026 Registered NVME "
1697 "targetport: x%px, private x%px "
1698 "portnm %llx nodenm %llx segs %d qs %d\n",
1699 phba->targetport, tgtp,
1700 pinfo.port_name, pinfo.node_name,
1701 lpfc_tgttemplate.max_sgl_segments,
1702 lpfc_tgttemplate.max_hw_queues);
1703
1704 atomic_set(&tgtp->rcv_ls_req_in, 0);
1705 atomic_set(&tgtp->rcv_ls_req_out, 0);
1706 atomic_set(&tgtp->rcv_ls_req_drop, 0);
1707 atomic_set(&tgtp->xmt_ls_abort, 0);
1708 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0);
1709 atomic_set(&tgtp->xmt_ls_rsp, 0);
1710 atomic_set(&tgtp->xmt_ls_drop, 0);
1711 atomic_set(&tgtp->xmt_ls_rsp_error, 0);
1712 atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0);
1713 atomic_set(&tgtp->xmt_ls_rsp_aborted, 0);
1714 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0);
1715 atomic_set(&tgtp->rcv_fcp_cmd_in, 0);
1716 atomic_set(&tgtp->rcv_fcp_cmd_out, 0);
1717 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0);
1718 atomic_set(&tgtp->xmt_fcp_drop, 0);
1719 atomic_set(&tgtp->xmt_fcp_read_rsp, 0);
1720 atomic_set(&tgtp->xmt_fcp_read, 0);
1721 atomic_set(&tgtp->xmt_fcp_write, 0);
1722 atomic_set(&tgtp->xmt_fcp_rsp, 0);
1723 atomic_set(&tgtp->xmt_fcp_release, 0);
1724 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0);
1725 atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
1726 atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0);
1727 atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0);
1728 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
1729 atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0);
1730 atomic_set(&tgtp->xmt_fcp_abort, 0);
1731 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0);
1732 atomic_set(&tgtp->xmt_abort_unsol, 0);
1733 atomic_set(&tgtp->xmt_abort_sol, 0);
1734 atomic_set(&tgtp->xmt_abort_rsp, 0);
1735 atomic_set(&tgtp->xmt_abort_rsp_error, 0);
1736 atomic_set(&tgtp->defer_ctx, 0);
1737 atomic_set(&tgtp->defer_fod, 0);
1738 atomic_set(&tgtp->defer_wqfull, 0);
1739 }
1740 return error;
1741 }
1742
1743 int
lpfc_nvmet_update_targetport(struct lpfc_hba * phba)1744 lpfc_nvmet_update_targetport(struct lpfc_hba *phba)
1745 {
1746 struct lpfc_vport *vport = phba->pport;
1747
1748 if (!phba->targetport)
1749 return 0;
1750
1751 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME,
1752 "6007 Update NVMET port x%px did x%x\n",
1753 phba->targetport, vport->fc_myDID);
1754
1755 phba->targetport->port_id = vport->fc_myDID;
1756 return 0;
1757 }
1758
1759 /**
1760 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort
1761 * @phba: pointer to lpfc hba data structure.
1762 * @axri: pointer to the nvmet xri abort wcqe structure.
1763 *
1764 * This routine is invoked by the worker thread to process a SLI4 fast-path
1765 * NVMET aborted xri.
1766 **/
1767 void
lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba * phba,struct sli4_wcqe_xri_aborted * axri)1768 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba,
1769 struct sli4_wcqe_xri_aborted *axri)
1770 {
1771 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1772 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri);
1773 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri);
1774 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
1775 struct lpfc_nvmet_tgtport *tgtp;
1776 struct nvmefc_tgt_fcp_req *req = NULL;
1777 struct lpfc_nodelist *ndlp;
1778 unsigned long iflag = 0;
1779 int rrq_empty = 0;
1780 bool released = false;
1781
1782 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1783 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid);
1784
1785 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME))
1786 return;
1787
1788 if (phba->targetport) {
1789 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
1790 atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe);
1791 }
1792
1793 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1794 list_for_each_entry_safe(ctxp, next_ctxp,
1795 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1796 list) {
1797 if (ctxp->ctxbuf->sglq->sli4_xritag != xri)
1798 continue;
1799
1800 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock,
1801 iflag);
1802
1803 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1804 /* Check if we already received a free context call
1805 * and we have completed processing an abort situation.
1806 */
1807 if (ctxp->flag & LPFC_NVME_CTX_RLS &&
1808 !(ctxp->flag & LPFC_NVME_ABORT_OP)) {
1809 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1810 list_del_init(&ctxp->list);
1811 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1812 released = true;
1813 }
1814 ctxp->flag &= ~LPFC_NVME_XBUSY;
1815 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1816
1817 rrq_empty = list_empty(&phba->active_rrq_list);
1818 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
1819 if (ndlp &&
1820 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE ||
1821 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) {
1822 lpfc_set_rrq_active(phba, ndlp,
1823 ctxp->ctxbuf->sglq->sli4_lxritag,
1824 rxid, 1);
1825 lpfc_sli4_abts_err_handler(phba, ndlp, axri);
1826 }
1827
1828 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1829 "6318 XB aborted oxid x%x flg x%x (%x)\n",
1830 ctxp->oxid, ctxp->flag, released);
1831 if (released)
1832 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1833
1834 if (rrq_empty)
1835 lpfc_worker_wake_up(phba);
1836 return;
1837 }
1838 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1839 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri);
1840 if (ctxp) {
1841 /*
1842 * Abort already done by FW, so BA_ACC sent.
1843 * However, the transport may be unaware.
1844 */
1845 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1846 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x "
1847 "flag x%x oxid x%x rxid x%x\n",
1848 xri, ctxp->state, ctxp->flag, ctxp->oxid,
1849 rxid);
1850
1851 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1852 ctxp->flag |= LPFC_NVME_ABTS_RCV;
1853 ctxp->state = LPFC_NVME_STE_ABORT;
1854 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1855
1856 lpfc_nvmeio_data(phba,
1857 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1858 xri, raw_smp_processor_id(), 0);
1859
1860 req = &ctxp->hdlrctx.fcp_req;
1861 if (req)
1862 nvmet_fc_rcv_fcp_abort(phba->targetport, req);
1863 }
1864 #endif
1865 }
1866
1867 int
lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport * vport,struct fc_frame_header * fc_hdr)1868 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport,
1869 struct fc_frame_header *fc_hdr)
1870 {
1871 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
1872 struct lpfc_hba *phba = vport->phba;
1873 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp;
1874 struct nvmefc_tgt_fcp_req *rsp;
1875 uint32_t sid;
1876 uint16_t oxid, xri;
1877 unsigned long iflag = 0;
1878
1879 sid = sli4_sid_from_fc_hdr(fc_hdr);
1880 oxid = be16_to_cpu(fc_hdr->fh_ox_id);
1881
1882 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1883 list_for_each_entry_safe(ctxp, next_ctxp,
1884 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1885 list) {
1886 if (ctxp->oxid != oxid || ctxp->sid != sid)
1887 continue;
1888
1889 xri = ctxp->ctxbuf->sglq->sli4_xritag;
1890
1891 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock,
1892 iflag);
1893 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1894 ctxp->flag |= LPFC_NVME_ABTS_RCV;
1895 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1896
1897 lpfc_nvmeio_data(phba,
1898 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1899 xri, raw_smp_processor_id(), 0);
1900
1901 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1902 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri);
1903
1904 rsp = &ctxp->hdlrctx.fcp_req;
1905 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp);
1906
1907 /* Respond with BA_ACC accordingly */
1908 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
1909 return 0;
1910 }
1911 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag);
1912 /* check the wait list */
1913 if (phba->sli4_hba.nvmet_io_wait_cnt) {
1914 struct rqb_dmabuf *nvmebuf;
1915 struct fc_frame_header *fc_hdr_tmp;
1916 u32 sid_tmp;
1917 u16 oxid_tmp;
1918 bool found = false;
1919
1920 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag);
1921
1922 /* match by oxid and s_id */
1923 list_for_each_entry(nvmebuf,
1924 &phba->sli4_hba.lpfc_nvmet_io_wait_list,
1925 hbuf.list) {
1926 fc_hdr_tmp = (struct fc_frame_header *)
1927 (nvmebuf->hbuf.virt);
1928 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id);
1929 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp);
1930 if (oxid_tmp != oxid || sid_tmp != sid)
1931 continue;
1932
1933 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1934 "6321 NVMET Rcv ABTS oxid x%x from x%x "
1935 "is waiting for a ctxp\n",
1936 oxid, sid);
1937
1938 list_del_init(&nvmebuf->hbuf.list);
1939 phba->sli4_hba.nvmet_io_wait_cnt--;
1940 found = true;
1941 break;
1942 }
1943 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock,
1944 iflag);
1945
1946 /* free buffer since already posted a new DMA buffer to RQ */
1947 if (found) {
1948 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf);
1949 /* Respond with BA_ACC accordingly */
1950 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
1951 return 0;
1952 }
1953 }
1954
1955 /* check active list */
1956 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid);
1957 if (ctxp) {
1958 xri = ctxp->ctxbuf->sglq->sli4_xritag;
1959
1960 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1961 ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP);
1962 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1963
1964 lpfc_nvmeio_data(phba,
1965 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n",
1966 xri, raw_smp_processor_id(), 0);
1967
1968 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1969 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x "
1970 "flag x%x state x%x\n",
1971 ctxp->oxid, xri, ctxp->flag, ctxp->state);
1972
1973 if (ctxp->flag & LPFC_NVME_TNOTIFY) {
1974 /* Notify the transport */
1975 nvmet_fc_rcv_fcp_abort(phba->targetport,
1976 &ctxp->hdlrctx.fcp_req);
1977 } else {
1978 cancel_work_sync(&ctxp->ctxbuf->defer_work);
1979 spin_lock_irqsave(&ctxp->ctxlock, iflag);
1980 lpfc_nvmet_defer_release(phba, ctxp);
1981 spin_unlock_irqrestore(&ctxp->ctxlock, iflag);
1982 }
1983 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
1984 ctxp->oxid);
1985
1986 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1);
1987 return 0;
1988 }
1989
1990 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n",
1991 oxid, raw_smp_processor_id(), 1);
1992
1993 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
1994 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid);
1995
1996 /* Respond with BA_RJT accordingly */
1997 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0);
1998 #endif
1999 return 0;
2000 }
2001
2002 static void
lpfc_nvmet_wqfull_flush(struct lpfc_hba * phba,struct lpfc_queue * wq,struct lpfc_async_xchg_ctx * ctxp)2003 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq,
2004 struct lpfc_async_xchg_ctx *ctxp)
2005 {
2006 struct lpfc_sli_ring *pring;
2007 struct lpfc_iocbq *nvmewqeq;
2008 struct lpfc_iocbq *next_nvmewqeq;
2009 unsigned long iflags;
2010 struct lpfc_wcqe_complete wcqe;
2011 struct lpfc_wcqe_complete *wcqep;
2012
2013 pring = wq->pring;
2014 wcqep = &wcqe;
2015
2016 /* Fake an ABORT error code back to cmpl routine */
2017 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete));
2018 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT);
2019 wcqep->parameter = IOERR_ABORT_REQUESTED;
2020
2021 spin_lock_irqsave(&pring->ring_lock, iflags);
2022 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq,
2023 &wq->wqfull_list, list) {
2024 if (ctxp) {
2025 /* Checking for a specific IO to flush */
2026 if (nvmewqeq->context2 == ctxp) {
2027 list_del(&nvmewqeq->list);
2028 spin_unlock_irqrestore(&pring->ring_lock,
2029 iflags);
2030 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq,
2031 wcqep);
2032 return;
2033 }
2034 continue;
2035 } else {
2036 /* Flush all IOs */
2037 list_del(&nvmewqeq->list);
2038 spin_unlock_irqrestore(&pring->ring_lock, iflags);
2039 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, wcqep);
2040 spin_lock_irqsave(&pring->ring_lock, iflags);
2041 }
2042 }
2043 if (!ctxp)
2044 wq->q_flag &= ~HBA_NVMET_WQFULL;
2045 spin_unlock_irqrestore(&pring->ring_lock, iflags);
2046 }
2047
2048 void
lpfc_nvmet_wqfull_process(struct lpfc_hba * phba,struct lpfc_queue * wq)2049 lpfc_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(&wq->wqfull_list)) {
2066 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq,
2067 list);
2068 spin_unlock_irqrestore(&pring->ring_lock, iflags);
2069 ctxp = (struct lpfc_async_xchg_ctx *)nvmewqeq->context2;
2070 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, 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(&nvmewqeq->list, &wq->wqfull_list);
2075 spin_unlock_irqrestore(&pring->ring_lock, 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(&pring->ring_lock, iflags);
2093
2094 #endif
2095 }
2096
2097 void
lpfc_nvmet_destroy_targetport(struct lpfc_hba * phba)2098 lpfc_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(phba->targetport);
2116 if (!wait_for_completion_timeout(&tport_unreg_cmp,
2117 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 */
2143 int
lpfc_nvmet_handle_lsreq(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * axchg)2144 lpfc_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(&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(phba->targetport, axchg->ndlp, &axchg->ls_rsp,
2160 axchg->payload, 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(&tgtp->rcv_ls_req_out);
2170 return 0;
2171 }
2172
2173 atomic_inc(&tgtp->rcv_ls_req_drop);
2174 #endif
2175 return 1;
2176 }
2177
2178 static void
lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf * ctx_buf)2179 lpfc_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(&ctxp->ctxlock, 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(phba->targetport, &ctxp->hdlrctx.fcp_req,
2227 payload, ctxp->size);
2228 /* Process FCP command */
2229 if (rc == 0) {
2230 atomic_inc(&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(&ctxp->ctxlock, iflags);
2235 return;
2236 }
2237 ctxp->rqb_buffer = NULL;
2238 spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
2239 lpfc_rq_buf_free(phba, &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(&tgtp->rcv_fcp_cmd_out);
2249 atomic_inc(&tgtp->defer_fod);
2250 spin_lock_irqsave(&ctxp->ctxlock, iflags);
2251 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) {
2252 spin_unlock_irqrestore(&ctxp->ctxlock, iflags);
2253 return;
2254 }
2255 spin_unlock_irqrestore(&ctxp->ctxlock, 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, phba->sli4_hba.nvmet_mrq_hdr[qno],
2263 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
2264 return;
2265 }
2266 ctxp->flag &= ~LPFC_NVME_TNOTIFY;
2267 atomic_inc(&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(&ctxp->ctxlock, iflags);
2279 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
2280 #endif
2281 }
2282
2283 static void
lpfc_nvmet_fcp_rqst_defer_work(struct work_struct * work)2284 lpfc_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
2294 static struct lpfc_nvmet_ctxbuf *
lpfc_nvmet_replenish_context(struct lpfc_hba * phba,struct lpfc_nvmet_ctx_info * current_infop)2295 lpfc_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(&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(&get_infop->nvmet_ctx_list,
2328 ¤t_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(&get_infop->nvmet_ctx_list_lock);
2333
2334 current_infop->nvmet_ctx_start_cpu = get_infop;
2335 list_remove_head(¤t_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(&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 **/
2366 static void
lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba * phba,uint32_t idx,struct rqb_dmabuf * nvmebuf,uint64_t isr_timestamp,uint8_t cqflag)2367 lpfc_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, &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(¤t_infop->nvmet_ctx_list_lock, iflag);
2404 if (current_infop->nvmet_ctx_list_cnt) {
2405 list_remove_head(¤t_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(¤t_infop->nvmet_ctx_list_lock, 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(&nvmebuf->hbuf.list,
2437 &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(&phba->sli4_hba.nvmet_io_wait_lock,
2441 iflag);
2442
2443 /* Post a brand new DMA buffer to RQ */
2444 qno = nvmebuf->idx;
2445 lpfc_post_rq_buffer(
2446 phba, phba->sli4_hba.nvmet_mrq_hdr[qno],
2447 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno);
2448
2449 atomic_inc(&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(&ctxp->list, &phba->sli4_hba.t_active_ctx_list);
2458 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, 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(&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(phba->wq, &ctx_buf->defer_work)) {
2501 atomic_inc(&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(&ctxp->ctxlock, 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 **/
2531 void
lpfc_nvmet_unsol_fcp_event(struct lpfc_hba * phba,uint32_t idx,struct rqb_dmabuf * nvmebuf,uint64_t isr_timestamp,uint8_t cqflag)2532 lpfc_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, &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 **/
2575 static struct lpfc_iocbq *
lpfc_nvmet_prep_ls_wqe(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp,dma_addr_t rspbuf,uint16_t rspsize)2576 lpfc_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->context1 = lpfc_nlp_get(ndlp);
2616 if (nvmewqe->context1 == NULL)
2617 goto nvme_wqe_free_wqeq_exit;
2618 nvmewqe->context2 = 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->iocb_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
2689 nvme_wqe_free_wqeq_exit:
2690 nvmewqe->context2 = NULL;
2691 nvmewqe->context3 = NULL;
2692 lpfc_sli_release_iocbq(phba, nvmewqe);
2693 return NULL;
2694 }
2695
2696
2697 static struct lpfc_iocbq *
lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp)2698 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba,
2699 struct lpfc_async_xchg_ctx *ctxp)
2700 {
2701 struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.fcp_req;
2702 struct lpfc_nvmet_tgtport *tgtp;
2703 struct sli4_sge *sgl;
2704 struct lpfc_nodelist *ndlp;
2705 struct lpfc_iocbq *nvmewqe;
2706 struct scatterlist *sgel;
2707 union lpfc_wqe128 *wqe;
2708 struct ulp_bde64 *bde;
2709 dma_addr_t physaddr;
2710 int i, cnt, nsegs;
2711 int do_pbde;
2712 int xc = 1;
2713
2714 if (!lpfc_is_link_up(phba)) {
2715 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2716 "6107 NVMET prep FCP wqe: link err:"
2717 "NPORT x%x oxid x%x ste %d\n",
2718 ctxp->sid, ctxp->oxid, ctxp->state);
2719 return NULL;
2720 }
2721
2722 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
2723 if (!ndlp ||
2724 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
2725 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
2726 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2727 "6108 NVMET prep FCP wqe: no ndlp: "
2728 "NPORT x%x oxid x%x ste %d\n",
2729 ctxp->sid, ctxp->oxid, ctxp->state);
2730 return NULL;
2731 }
2732
2733 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) {
2734 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2735 "6109 NVMET prep FCP wqe: seg cnt err: "
2736 "NPORT x%x oxid x%x ste %d cnt %d\n",
2737 ctxp->sid, ctxp->oxid, ctxp->state,
2738 phba->cfg_nvme_seg_cnt);
2739 return NULL;
2740 }
2741 nsegs = rsp->sg_cnt;
2742
2743 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
2744 nvmewqe = ctxp->wqeq;
2745 if (nvmewqe == NULL) {
2746 /* Allocate buffer for command wqe */
2747 nvmewqe = ctxp->ctxbuf->iocbq;
2748 if (nvmewqe == NULL) {
2749 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2750 "6110 NVMET prep FCP wqe: No "
2751 "WQE: NPORT x%x oxid x%x ste %d\n",
2752 ctxp->sid, ctxp->oxid, ctxp->state);
2753 return NULL;
2754 }
2755 ctxp->wqeq = nvmewqe;
2756 xc = 0; /* create new XRI */
2757 nvmewqe->sli4_lxritag = NO_XRI;
2758 nvmewqe->sli4_xritag = NO_XRI;
2759 }
2760
2761 /* Sanity check */
2762 if (((ctxp->state == LPFC_NVME_STE_RCV) &&
2763 (ctxp->entry_cnt == 1)) ||
2764 (ctxp->state == LPFC_NVME_STE_DATA)) {
2765 wqe = &nvmewqe->wqe;
2766 } else {
2767 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2768 "6111 Wrong state NVMET FCP: %d cnt %d\n",
2769 ctxp->state, ctxp->entry_cnt);
2770 return NULL;
2771 }
2772
2773 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl;
2774 switch (rsp->op) {
2775 case NVMET_FCOP_READDATA:
2776 case NVMET_FCOP_READDATA_RSP:
2777 /* From the tsend template, initialize words 7 - 11 */
2778 memcpy(&wqe->words[7],
2779 &lpfc_tsend_cmd_template.words[7],
2780 sizeof(uint32_t) * 5);
2781
2782 /* Words 0 - 2 : The first sg segment */
2783 sgel = &rsp->sg[0];
2784 physaddr = sg_dma_address(sgel);
2785 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2786 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel);
2787 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr));
2788 wqe->fcp_tsend.bde.addrHigh =
2789 cpu_to_le32(putPaddrHigh(physaddr));
2790
2791 /* Word 3 */
2792 wqe->fcp_tsend.payload_offset_len = 0;
2793
2794 /* Word 4 */
2795 wqe->fcp_tsend.relative_offset = ctxp->offset;
2796
2797 /* Word 5 */
2798 wqe->fcp_tsend.reserved = 0;
2799
2800 /* Word 6 */
2801 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com,
2802 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2803 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com,
2804 nvmewqe->sli4_xritag);
2805
2806 /* Word 7 - set ar later */
2807
2808 /* Word 8 */
2809 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag;
2810
2811 /* Word 9 */
2812 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag);
2813 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid);
2814
2815 /* Word 10 - set wqes later, in template xc=1 */
2816 if (!xc)
2817 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0);
2818
2819 /* Word 11 - set sup, irsp, irsplen later */
2820 do_pbde = 0;
2821
2822 /* Word 12 */
2823 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
2824
2825 /* Setup 2 SKIP SGEs */
2826 sgl->addr_hi = 0;
2827 sgl->addr_lo = 0;
2828 sgl->word2 = 0;
2829 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2830 sgl->word2 = cpu_to_le32(sgl->word2);
2831 sgl->sge_len = 0;
2832 sgl++;
2833 sgl->addr_hi = 0;
2834 sgl->addr_lo = 0;
2835 sgl->word2 = 0;
2836 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2837 sgl->word2 = cpu_to_le32(sgl->word2);
2838 sgl->sge_len = 0;
2839 sgl++;
2840 if (rsp->op == NVMET_FCOP_READDATA_RSP) {
2841 atomic_inc(&tgtp->xmt_fcp_read_rsp);
2842
2843 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
2844
2845 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
2846 if (ndlp->nlp_flag & NLP_SUPPRESS_RSP)
2847 bf_set(wqe_sup,
2848 &wqe->fcp_tsend.wqe_com, 1);
2849 } else {
2850 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1);
2851 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1);
2852 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com,
2853 ((rsp->rsplen >> 2) - 1));
2854 memcpy(&wqe->words[16], rsp->rspaddr,
2855 rsp->rsplen);
2856 }
2857 } else {
2858 atomic_inc(&tgtp->xmt_fcp_read);
2859
2860 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */
2861 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
2862 }
2863 break;
2864
2865 case NVMET_FCOP_WRITEDATA:
2866 /* From the treceive template, initialize words 3 - 11 */
2867 memcpy(&wqe->words[3],
2868 &lpfc_treceive_cmd_template.words[3],
2869 sizeof(uint32_t) * 9);
2870
2871 /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */
2872 wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP;
2873 wqe->fcp_treceive.bde.tus.f.bdeSize = 0;
2874 wqe->fcp_treceive.bde.addrLow = 0;
2875 wqe->fcp_treceive.bde.addrHigh = 0;
2876
2877 /* Word 4 */
2878 wqe->fcp_treceive.relative_offset = ctxp->offset;
2879
2880 /* Word 6 */
2881 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com,
2882 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2883 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com,
2884 nvmewqe->sli4_xritag);
2885
2886 /* Word 7 */
2887
2888 /* Word 8 */
2889 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag;
2890
2891 /* Word 9 */
2892 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag);
2893 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid);
2894
2895 /* Word 10 - in template xc=1 */
2896 if (!xc)
2897 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0);
2898
2899 /* Word 11 - set pbde later */
2900 if (phba->cfg_enable_pbde) {
2901 do_pbde = 1;
2902 } else {
2903 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0);
2904 do_pbde = 0;
2905 }
2906
2907 /* Word 12 */
2908 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
2909
2910 /* Setup 2 SKIP SGEs */
2911 sgl->addr_hi = 0;
2912 sgl->addr_lo = 0;
2913 sgl->word2 = 0;
2914 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2915 sgl->word2 = cpu_to_le32(sgl->word2);
2916 sgl->sge_len = 0;
2917 sgl++;
2918 sgl->addr_hi = 0;
2919 sgl->addr_lo = 0;
2920 sgl->word2 = 0;
2921 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP);
2922 sgl->word2 = cpu_to_le32(sgl->word2);
2923 sgl->sge_len = 0;
2924 sgl++;
2925 atomic_inc(&tgtp->xmt_fcp_write);
2926 break;
2927
2928 case NVMET_FCOP_RSP:
2929 /* From the treceive template, initialize words 4 - 11 */
2930 memcpy(&wqe->words[4],
2931 &lpfc_trsp_cmd_template.words[4],
2932 sizeof(uint32_t) * 8);
2933
2934 /* Words 0 - 2 */
2935 physaddr = rsp->rspdma;
2936 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
2937 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen;
2938 wqe->fcp_trsp.bde.addrLow =
2939 cpu_to_le32(putPaddrLow(physaddr));
2940 wqe->fcp_trsp.bde.addrHigh =
2941 cpu_to_le32(putPaddrHigh(physaddr));
2942
2943 /* Word 3 */
2944 wqe->fcp_trsp.response_len = rsp->rsplen;
2945
2946 /* Word 6 */
2947 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com,
2948 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
2949 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com,
2950 nvmewqe->sli4_xritag);
2951
2952 /* Word 7 */
2953
2954 /* Word 8 */
2955 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag;
2956
2957 /* Word 9 */
2958 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag);
2959 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid);
2960
2961 /* Word 10 */
2962 if (xc)
2963 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1);
2964
2965 /* Word 11 */
2966 /* In template wqes=0 irsp=0 irsplen=0 - good response */
2967 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) {
2968 /* Bad response - embed it */
2969 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1);
2970 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1);
2971 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com,
2972 ((rsp->rsplen >> 2) - 1));
2973 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen);
2974 }
2975 do_pbde = 0;
2976
2977 /* Word 12 */
2978 wqe->fcp_trsp.rsvd_12_15[0] = 0;
2979
2980 /* Use rspbuf, NOT sg list */
2981 nsegs = 0;
2982 sgl->word2 = 0;
2983 atomic_inc(&tgtp->xmt_fcp_rsp);
2984 break;
2985
2986 default:
2987 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR,
2988 "6064 Unknown Rsp Op %d\n",
2989 rsp->op);
2990 return NULL;
2991 }
2992
2993 nvmewqe->retry = 1;
2994 nvmewqe->vport = phba->pport;
2995 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT;
2996 nvmewqe->context1 = ndlp;
2997
2998 for_each_sg(rsp->sg, sgel, nsegs, i) {
2999 physaddr = sg_dma_address(sgel);
3000 cnt = sg_dma_len(sgel);
3001 sgl->addr_hi = putPaddrHigh(physaddr);
3002 sgl->addr_lo = putPaddrLow(physaddr);
3003 sgl->word2 = 0;
3004 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
3005 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset);
3006 if ((i+1) == rsp->sg_cnt)
3007 bf_set(lpfc_sli4_sge_last, sgl, 1);
3008 sgl->word2 = cpu_to_le32(sgl->word2);
3009 sgl->sge_len = cpu_to_le32(cnt);
3010 if (i == 0) {
3011 bde = (struct ulp_bde64 *)&wqe->words[13];
3012 if (do_pbde) {
3013 /* Words 13-15 (PBDE) */
3014 bde->addrLow = sgl->addr_lo;
3015 bde->addrHigh = sgl->addr_hi;
3016 bde->tus.f.bdeSize =
3017 le32_to_cpu(sgl->sge_len);
3018 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
3019 bde->tus.w = cpu_to_le32(bde->tus.w);
3020 } else {
3021 memset(bde, 0, sizeof(struct ulp_bde64));
3022 }
3023 }
3024 sgl++;
3025 ctxp->offset += cnt;
3026 }
3027 ctxp->state = LPFC_NVME_STE_DATA;
3028 ctxp->entry_cnt++;
3029 return nvmewqe;
3030 }
3031
3032 /**
3033 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
3034 * @phba: Pointer to HBA context object.
3035 * @cmdwqe: Pointer to driver command WQE object.
3036 * @wcqe: Pointer to driver response CQE object.
3037 *
3038 * The function is called from SLI ring event handler with no
3039 * lock held. This function is the completion handler for NVME ABTS for FCP cmds
3040 * The function frees memory resources used for the NVME commands.
3041 **/
3042 static void
lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)3043 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3044 struct lpfc_wcqe_complete *wcqe)
3045 {
3046 struct lpfc_async_xchg_ctx *ctxp;
3047 struct lpfc_nvmet_tgtport *tgtp;
3048 uint32_t result;
3049 unsigned long flags;
3050 bool released = false;
3051
3052 ctxp = cmdwqe->context2;
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(&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(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3068 list_del_init(&ctxp->list);
3069 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3070 released = true;
3071 }
3072 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3073 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3074 atomic_inc(&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->context2 = NULL;
3084 cmdwqe->context3 = 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, 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 * @wcqe: Pointer to driver response CQE 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 **/
3111 static void
lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)3112 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3113 struct lpfc_wcqe_complete *wcqe)
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
3121 ctxp = cmdwqe->context2;
3122 result = wcqe->parameter;
3123
3124 if (!ctxp) {
3125 /* if context is clear, related io alrady complete */
3126 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3127 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n",
3128 wcqe->word0, wcqe->total_data_placed,
3129 result, wcqe->word3);
3130 return;
3131 }
3132
3133 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3134 spin_lock_irqsave(&ctxp->ctxlock, flags);
3135 if (ctxp->flag & LPFC_NVME_ABORT_OP)
3136 atomic_inc(&tgtp->xmt_fcp_abort_cmpl);
3137
3138 /* Sanity check */
3139 if (ctxp->state != LPFC_NVME_STE_ABORT) {
3140 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3141 "6112 ABTS Wrong state:%d oxid x%x\n",
3142 ctxp->state, ctxp->oxid);
3143 }
3144
3145 /* Check if we already received a free context call
3146 * and we have completed processing an abort situation.
3147 */
3148 ctxp->state = LPFC_NVME_STE_DONE;
3149 if ((ctxp->flag & LPFC_NVME_CTX_RLS) &&
3150 !(ctxp->flag & LPFC_NVME_XBUSY)) {
3151 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3152 list_del_init(&ctxp->list);
3153 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3154 released = true;
3155 }
3156 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3157 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3158 atomic_inc(&tgtp->xmt_abort_rsp);
3159
3160 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3161 "6316 ABTS cmpl oxid x%x flg x%x (%x) "
3162 "WCQE: %08x %08x %08x %08x\n",
3163 ctxp->oxid, ctxp->flag, released,
3164 wcqe->word0, wcqe->total_data_placed,
3165 result, wcqe->word3);
3166
3167 cmdwqe->context2 = NULL;
3168 cmdwqe->context3 = NULL;
3169 /*
3170 * if transport has released ctx, then can reuse it. Otherwise,
3171 * will be recycled by transport release call.
3172 */
3173 if (released)
3174 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
3175
3176 /* Since iaab/iaar are NOT set, there is no work left.
3177 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted
3178 * should have been called already.
3179 */
3180 }
3181
3182 /**
3183 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
3184 * @phba: Pointer to HBA context object.
3185 * @cmdwqe: Pointer to driver command WQE object.
3186 * @wcqe: Pointer to driver response CQE object.
3187 *
3188 * The function is called from SLI ring event handler with no
3189 * lock held. This function is the completion handler for NVME ABTS for LS cmds
3190 * The function frees memory resources used for the NVME commands.
3191 **/
3192 static void
lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba * phba,struct lpfc_iocbq * cmdwqe,struct lpfc_wcqe_complete * wcqe)3193 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
3194 struct lpfc_wcqe_complete *wcqe)
3195 {
3196 struct lpfc_async_xchg_ctx *ctxp;
3197 struct lpfc_nvmet_tgtport *tgtp;
3198 uint32_t result;
3199
3200 ctxp = cmdwqe->context2;
3201 result = wcqe->parameter;
3202
3203 if (phba->nvmet_support) {
3204 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3205 atomic_inc(&tgtp->xmt_ls_abort_cmpl);
3206 }
3207
3208 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3209 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n",
3210 ctxp, wcqe->word0, wcqe->total_data_placed,
3211 result, wcqe->word3);
3212
3213 if (!ctxp) {
3214 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3215 "6415 NVMET LS Abort No ctx: WCQE: "
3216 "%08x %08x %08x %08x\n",
3217 wcqe->word0, wcqe->total_data_placed,
3218 result, wcqe->word3);
3219
3220 lpfc_sli_release_iocbq(phba, cmdwqe);
3221 return;
3222 }
3223
3224 if (ctxp->state != LPFC_NVME_STE_LS_ABORT) {
3225 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3226 "6416 NVMET LS abort cmpl state mismatch: "
3227 "oxid x%x: %d %d\n",
3228 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
3229 }
3230
3231 cmdwqe->context2 = NULL;
3232 cmdwqe->context3 = NULL;
3233 lpfc_sli_release_iocbq(phba, cmdwqe);
3234 kfree(ctxp);
3235 }
3236
3237 static int
lpfc_nvmet_unsol_issue_abort(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp,uint32_t sid,uint16_t xri)3238 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
3239 struct lpfc_async_xchg_ctx *ctxp,
3240 uint32_t sid, uint16_t xri)
3241 {
3242 struct lpfc_nvmet_tgtport *tgtp = NULL;
3243 struct lpfc_iocbq *abts_wqeq;
3244 union lpfc_wqe128 *wqe_abts;
3245 struct lpfc_nodelist *ndlp;
3246
3247 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3248 "6067 ABTS: sid %x xri x%x/x%x\n",
3249 sid, xri, ctxp->wqeq->sli4_xritag);
3250
3251 if (phba->nvmet_support && phba->targetport)
3252 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3253
3254 ndlp = lpfc_findnode_did(phba->pport, sid);
3255 if (!ndlp ||
3256 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
3257 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
3258 if (tgtp)
3259 atomic_inc(&tgtp->xmt_abort_rsp_error);
3260 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3261 "6134 Drop ABTS - wrong NDLP state x%x.\n",
3262 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
3263
3264 /* No failure to an ABTS request. */
3265 return 0;
3266 }
3267
3268 abts_wqeq = ctxp->wqeq;
3269 wqe_abts = &abts_wqeq->wqe;
3270
3271 /*
3272 * Since we zero the whole WQE, we need to ensure we set the WQE fields
3273 * that were initialized in lpfc_sli4_nvmet_alloc.
3274 */
3275 memset(wqe_abts, 0, sizeof(union lpfc_wqe));
3276
3277 /* Word 5 */
3278 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
3279 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
3280 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
3281 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
3282 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);
3283
3284 /* Word 6 */
3285 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
3286 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
3287 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
3288 abts_wqeq->sli4_xritag);
3289
3290 /* Word 7 */
3291 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
3292 CMD_XMIT_SEQUENCE64_WQE);
3293 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
3294 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
3295 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);
3296
3297 /* Word 8 */
3298 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;
3299
3300 /* Word 9 */
3301 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
3302 /* Needs to be set by caller */
3303 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);
3304
3305 /* Word 10 */
3306 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
3307 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
3308 LPFC_WQE_LENLOC_WORD12);
3309 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
3310 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);
3311
3312 /* Word 11 */
3313 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
3314 LPFC_WQE_CQ_ID_DEFAULT);
3315 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
3316 OTHER_COMMAND);
3317
3318 abts_wqeq->vport = phba->pport;
3319 abts_wqeq->context1 = ndlp;
3320 abts_wqeq->context2 = ctxp;
3321 abts_wqeq->context3 = NULL;
3322 abts_wqeq->rsvd2 = 0;
3323 /* hba_wqidx should already be setup from command we are aborting */
3324 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
3325 abts_wqeq->iocb.ulpLe = 1;
3326
3327 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3328 "6069 Issue ABTS to xri x%x reqtag x%x\n",
3329 xri, abts_wqeq->iotag);
3330 return 1;
3331 }
3332
3333 /**
3334 * lpfc_nvmet_prep_abort_wqe - set up 'abort' work queue entry.
3335 * @pwqeq: Pointer to command iocb.
3336 * @xritag: Tag that uniqely identifies the local exchange resource.
3337 * @opt: Option bits -
3338 * bit 0 = inhibit sending abts on the link
3339 *
3340 * This function is called with hbalock held.
3341 **/
3342 static void
lpfc_nvmet_prep_abort_wqe(struct lpfc_iocbq * pwqeq,u16 xritag,u8 opt)3343 lpfc_nvmet_prep_abort_wqe(struct lpfc_iocbq *pwqeq, u16 xritag, u8 opt)
3344 {
3345 union lpfc_wqe128 *wqe = &pwqeq->wqe;
3346
3347 /* WQEs are reused. Clear stale data and set key fields to
3348 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
3349 */
3350 memset(wqe, 0, sizeof(*wqe));
3351
3352 if (opt & INHIBIT_ABORT)
3353 bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
3354 /* Abort specified xri tag, with the mask deliberately zeroed */
3355 bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
3356
3357 bf_set(wqe_cmnd, &wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
3358
3359 /* Abort the I/O associated with this outstanding exchange ID. */
3360 wqe->abort_cmd.wqe_com.abort_tag = xritag;
3361
3362 /* iotag for the wqe completion. */
3363 bf_set(wqe_reqtag, &wqe->abort_cmd.wqe_com, pwqeq->iotag);
3364
3365 bf_set(wqe_qosd, &wqe->abort_cmd.wqe_com, 1);
3366 bf_set(wqe_lenloc, &wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
3367
3368 bf_set(wqe_cmd_type, &wqe->abort_cmd.wqe_com, OTHER_COMMAND);
3369 bf_set(wqe_wqec, &wqe->abort_cmd.wqe_com, 1);
3370 bf_set(wqe_cqid, &wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
3371 }
3372
3373 static int
lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp,uint32_t sid,uint16_t xri)3374 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
3375 struct lpfc_async_xchg_ctx *ctxp,
3376 uint32_t sid, uint16_t xri)
3377 {
3378 struct lpfc_nvmet_tgtport *tgtp;
3379 struct lpfc_iocbq *abts_wqeq;
3380 struct lpfc_nodelist *ndlp;
3381 unsigned long flags;
3382 u8 opt;
3383 int rc;
3384
3385 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3386 if (!ctxp->wqeq) {
3387 ctxp->wqeq = ctxp->ctxbuf->iocbq;
3388 ctxp->wqeq->hba_wqidx = 0;
3389 }
3390
3391 ndlp = lpfc_findnode_did(phba->pport, sid);
3392 if (!ndlp ||
3393 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
3394 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
3395 atomic_inc(&tgtp->xmt_abort_rsp_error);
3396 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3397 "6160 Drop ABORT - wrong NDLP state x%x.\n",
3398 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE);
3399
3400 /* No failure to an ABTS request. */
3401 spin_lock_irqsave(&ctxp->ctxlock, flags);
3402 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3403 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3404 return 0;
3405 }
3406
3407 /* Issue ABTS for this WQE based on iotag */
3408 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
3409 spin_lock_irqsave(&ctxp->ctxlock, flags);
3410 if (!ctxp->abort_wqeq) {
3411 atomic_inc(&tgtp->xmt_abort_rsp_error);
3412 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3413 "6161 ABORT failed: No wqeqs: "
3414 "xri: x%x\n", ctxp->oxid);
3415 /* No failure to an ABTS request. */
3416 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3417 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3418 return 0;
3419 }
3420 abts_wqeq = ctxp->abort_wqeq;
3421 ctxp->state = LPFC_NVME_STE_ABORT;
3422 opt = (ctxp->flag & LPFC_NVME_ABTS_RCV) ? INHIBIT_ABORT : 0;
3423 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3424
3425 /* Announce entry to new IO submit field. */
3426 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
3427 "6162 ABORT Request to rport DID x%06x "
3428 "for xri x%x x%x\n",
3429 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);
3430
3431 /* If the hba is getting reset, this flag is set. It is
3432 * cleared when the reset is complete and rings reestablished.
3433 */
3434 spin_lock_irqsave(&phba->hbalock, flags);
3435 /* driver queued commands are in process of being flushed */
3436 if (phba->hba_flag & HBA_IOQ_FLUSH) {
3437 spin_unlock_irqrestore(&phba->hbalock, flags);
3438 atomic_inc(&tgtp->xmt_abort_rsp_error);
3439 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3440 "6163 Driver in reset cleanup - flushing "
3441 "NVME Req now. hba_flag x%x oxid x%x\n",
3442 phba->hba_flag, ctxp->oxid);
3443 lpfc_sli_release_iocbq(phba, abts_wqeq);
3444 spin_lock_irqsave(&ctxp->ctxlock, flags);
3445 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3446 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3447 return 0;
3448 }
3449
3450 /* Outstanding abort is in progress */
3451 if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) {
3452 spin_unlock_irqrestore(&phba->hbalock, flags);
3453 atomic_inc(&tgtp->xmt_abort_rsp_error);
3454 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3455 "6164 Outstanding NVME I/O Abort Request "
3456 "still pending on oxid x%x\n",
3457 ctxp->oxid);
3458 lpfc_sli_release_iocbq(phba, abts_wqeq);
3459 spin_lock_irqsave(&ctxp->ctxlock, flags);
3460 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3461 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3462 return 0;
3463 }
3464
3465 /* Ready - mark outstanding as aborted by driver. */
3466 abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED;
3467
3468 lpfc_nvmet_prep_abort_wqe(abts_wqeq, ctxp->wqeq->sli4_xritag, opt);
3469
3470 /* ABTS WQE must go to the same WQ as the WQE to be aborted */
3471 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
3472 abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
3473 abts_wqeq->iocb_cmpl = NULL;
3474 abts_wqeq->iocb_flag |= LPFC_IO_NVME;
3475 abts_wqeq->context2 = ctxp;
3476 abts_wqeq->vport = phba->pport;
3477 if (!ctxp->hdwq)
3478 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
3479
3480 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
3481 spin_unlock_irqrestore(&phba->hbalock, flags);
3482 if (rc == WQE_SUCCESS) {
3483 atomic_inc(&tgtp->xmt_abort_sol);
3484 return 0;
3485 }
3486
3487 atomic_inc(&tgtp->xmt_abort_rsp_error);
3488 spin_lock_irqsave(&ctxp->ctxlock, flags);
3489 ctxp->flag &= ~LPFC_NVME_ABORT_OP;
3490 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3491 lpfc_sli_release_iocbq(phba, abts_wqeq);
3492 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3493 "6166 Failed ABORT issue_wqe with status x%x "
3494 "for oxid x%x.\n",
3495 rc, ctxp->oxid);
3496 return 1;
3497 }
3498
3499 static int
lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp,uint32_t sid,uint16_t xri)3500 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
3501 struct lpfc_async_xchg_ctx *ctxp,
3502 uint32_t sid, uint16_t xri)
3503 {
3504 struct lpfc_nvmet_tgtport *tgtp;
3505 struct lpfc_iocbq *abts_wqeq;
3506 unsigned long flags;
3507 bool released = false;
3508 int rc;
3509
3510 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3511 if (!ctxp->wqeq) {
3512 ctxp->wqeq = ctxp->ctxbuf->iocbq;
3513 ctxp->wqeq->hba_wqidx = 0;
3514 }
3515
3516 if (ctxp->state == LPFC_NVME_STE_FREE) {
3517 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3518 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n",
3519 ctxp->state, ctxp->entry_cnt, ctxp->oxid);
3520 rc = WQE_BUSY;
3521 goto aerr;
3522 }
3523 ctxp->state = LPFC_NVME_STE_ABORT;
3524 ctxp->entry_cnt++;
3525 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
3526 if (rc == 0)
3527 goto aerr;
3528
3529 spin_lock_irqsave(&phba->hbalock, flags);
3530 abts_wqeq = ctxp->wqeq;
3531 abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp;
3532 abts_wqeq->iocb_cmpl = NULL;
3533 abts_wqeq->iocb_flag |= LPFC_IO_NVMET;
3534 if (!ctxp->hdwq)
3535 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx];
3536
3537 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
3538 spin_unlock_irqrestore(&phba->hbalock, flags);
3539 if (rc == WQE_SUCCESS) {
3540 return 0;
3541 }
3542
3543 aerr:
3544 spin_lock_irqsave(&ctxp->ctxlock, flags);
3545 if (ctxp->flag & LPFC_NVME_CTX_RLS) {
3546 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3547 list_del_init(&ctxp->list);
3548 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock);
3549 released = true;
3550 }
3551 ctxp->flag &= ~(LPFC_NVME_ABORT_OP | LPFC_NVME_CTX_RLS);
3552 spin_unlock_irqrestore(&ctxp->ctxlock, flags);
3553
3554 atomic_inc(&tgtp->xmt_abort_rsp_error);
3555 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3556 "6135 Failed to Issue ABTS for oxid x%x. Status x%x "
3557 "(%x)\n",
3558 ctxp->oxid, rc, released);
3559 if (released)
3560 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
3561 return 1;
3562 }
3563
3564 /**
3565 * lpfc_nvme_unsol_ls_issue_abort - issue ABTS on an exchange received
3566 * via async frame receive where the frame is not handled.
3567 * @phba: pointer to adapter structure
3568 * @ctxp: pointer to the asynchronously received received sequence
3569 * @sid: address of the remote port to send the ABTS to
3570 * @xri: oxid value to for the ABTS (other side's exchange id).
3571 **/
3572 int
lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba * phba,struct lpfc_async_xchg_ctx * ctxp,uint32_t sid,uint16_t xri)3573 lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba,
3574 struct lpfc_async_xchg_ctx *ctxp,
3575 uint32_t sid, uint16_t xri)
3576 {
3577 struct lpfc_nvmet_tgtport *tgtp = NULL;
3578 struct lpfc_iocbq *abts_wqeq;
3579 unsigned long flags;
3580 int rc;
3581
3582 if ((ctxp->state == LPFC_NVME_STE_LS_RCV && ctxp->entry_cnt == 1) ||
3583 (ctxp->state == LPFC_NVME_STE_LS_RSP && ctxp->entry_cnt == 2)) {
3584 ctxp->state = LPFC_NVME_STE_LS_ABORT;
3585 ctxp->entry_cnt++;
3586 } else {
3587 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3588 "6418 NVMET LS abort state mismatch "
3589 "IO x%x: %d %d\n",
3590 ctxp->oxid, ctxp->state, ctxp->entry_cnt);
3591 ctxp->state = LPFC_NVME_STE_LS_ABORT;
3592 }
3593
3594 if (phba->nvmet_support && phba->targetport)
3595 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3596
3597 if (!ctxp->wqeq) {
3598 /* Issue ABTS for this WQE based on iotag */
3599 ctxp->wqeq = lpfc_sli_get_iocbq(phba);
3600 if (!ctxp->wqeq) {
3601 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3602 "6068 Abort failed: No wqeqs: "
3603 "xri: x%x\n", xri);
3604 /* No failure to an ABTS request. */
3605 kfree(ctxp);
3606 return 0;
3607 }
3608 }
3609 abts_wqeq = ctxp->wqeq;
3610
3611 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) {
3612 rc = WQE_BUSY;
3613 goto out;
3614 }
3615
3616 spin_lock_irqsave(&phba->hbalock, flags);
3617 abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
3618 abts_wqeq->iocb_cmpl = NULL;
3619 abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS;
3620 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq);
3621 spin_unlock_irqrestore(&phba->hbalock, flags);
3622 if (rc == WQE_SUCCESS) {
3623 if (tgtp)
3624 atomic_inc(&tgtp->xmt_abort_unsol);
3625 return 0;
3626 }
3627 out:
3628 if (tgtp)
3629 atomic_inc(&tgtp->xmt_abort_rsp_error);
3630 abts_wqeq->context2 = NULL;
3631 abts_wqeq->context3 = NULL;
3632 lpfc_sli_release_iocbq(phba, abts_wqeq);
3633 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3634 "6056 Failed to Issue ABTS. Status x%x\n", rc);
3635 return 1;
3636 }
3637
3638 /**
3639 * lpfc_nvmet_invalidate_host
3640 *
3641 * @phba: pointer to the driver instance bound to an adapter port.
3642 * @ndlp: pointer to an lpfc_nodelist type
3643 *
3644 * This routine upcalls the nvmet transport to invalidate an NVME
3645 * host to which this target instance had active connections.
3646 */
3647 void
lpfc_nvmet_invalidate_host(struct lpfc_hba * phba,struct lpfc_nodelist * ndlp)3648 lpfc_nvmet_invalidate_host(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
3649 {
3650 u32 ndlp_has_hh;
3651 struct lpfc_nvmet_tgtport *tgtp;
3652
3653 lpfc_printf_log(phba, KERN_INFO,
3654 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
3655 "6203 Invalidating hosthandle x%px\n",
3656 ndlp);
3657
3658 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
3659 atomic_set(&tgtp->state, LPFC_NVMET_INV_HOST_ACTIVE);
3660
3661 spin_lock_irq(&ndlp->lock);
3662 ndlp_has_hh = ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH;
3663 spin_unlock_irq(&ndlp->lock);
3664
3665 /* Do not invalidate any nodes that do not have a hosthandle.
3666 * The host_release callbk will cause a node reference
3667 * count imbalance and a crash.
3668 */
3669 if (!ndlp_has_hh) {
3670 lpfc_printf_log(phba, KERN_INFO,
3671 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC,
3672 "6204 Skip invalidate on node x%px DID x%x\n",
3673 ndlp, ndlp->nlp_DID);
3674 return;
3675 }
3676
3677 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
3678 /* Need to get the nvmet_fc_target_port pointer here.*/
3679 nvmet_fc_invalidate_host(phba->targetport, ndlp);
3680 #endif
3681 }
3682
