1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2026 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 <linux/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 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); 121 122 /* Word 12 - fcp_data_len is variable */ 123 124 /* TRECEIVE template */ 125 wqe = &lpfc_treceive_cmd_template; 126 memset(wqe, 0, sizeof(union lpfc_wqe128)); 127 128 /* Word 0, 1, 2 - BDE is variable */ 129 130 /* Word 3 */ 131 wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN; 132 133 /* Word 4 - relative_offset is variable */ 134 135 /* Word 5 - is zero */ 136 137 /* Word 6 - ctxt_tag, xri_tag is variable */ 138 139 /* Word 7 */ 140 bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE); 141 bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF); 142 bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3); 143 bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI); 144 bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0); 145 146 /* Word 8 - abort_tag is variable */ 147 148 /* Word 9 - reqtag, rcvoxid is variable */ 149 150 /* Word 10 - xc is variable */ 151 bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1); 152 bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0); 153 bf_set(wqe_xchg, &wqe->fcp_treceive.wqe_com, LPFC_NVME_XCHG); 154 bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ); 155 bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12); 156 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); 157 158 /* Word 11 */ 159 bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE); 160 bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 161 bf_set(wqe_sup, &wqe->fcp_treceive.wqe_com, 0); 162 bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0); 163 bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0); 164 165 /* Word 12 - fcp_data_len is variable */ 166 167 /* TRSP template */ 168 wqe = &lpfc_trsp_cmd_template; 169 memset(wqe, 0, sizeof(union lpfc_wqe128)); 170 171 /* Word 0, 1, 2 - BDE is variable */ 172 173 /* Word 3 - response_len is variable */ 174 175 /* Word 4, 5 - is zero */ 176 177 /* Word 6 - ctxt_tag, xri_tag is variable */ 178 179 /* Word 7 */ 180 bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE); 181 bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED); 182 bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3); 183 bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI); 184 bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */ 185 186 /* Word 8 - abort_tag is variable */ 187 188 /* Word 9 - reqtag is variable */ 189 190 /* Word 10 wqes, xc is variable */ 191 bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1); 192 bf_set(wqe_xchg, &wqe->fcp_trsp.wqe_com, LPFC_NVME_XCHG); 193 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0); 194 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0); 195 bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE); 196 bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3); 197 198 /* Word 11 irsp, irsplen is variable */ 199 bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP); 200 bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 201 bf_set(wqe_sup, &wqe->fcp_trsp.wqe_com, 0); 202 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0); 203 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0); 204 205 /* Word 12, 13, 14, 15 - is zero */ 206 } 207 208 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 209 static struct lpfc_async_xchg_ctx * 210 lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri) 211 { 212 struct lpfc_async_xchg_ctx *ctxp; 213 unsigned long iflag; 214 bool found = false; 215 216 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 217 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 218 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 219 continue; 220 221 found = true; 222 break; 223 } 224 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 225 if (found) 226 return ctxp; 227 228 return NULL; 229 } 230 231 static struct lpfc_async_xchg_ctx * 232 lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid) 233 { 234 struct lpfc_async_xchg_ctx *ctxp; 235 unsigned long iflag; 236 bool found = false; 237 238 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 239 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 240 if (ctxp->oxid != oxid || ctxp->sid != sid) 241 continue; 242 243 found = true; 244 break; 245 } 246 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 247 if (found) 248 return ctxp; 249 250 return NULL; 251 } 252 #endif 253 254 static void 255 lpfc_nvmet_defer_release(struct lpfc_hba *phba, 256 struct lpfc_async_xchg_ctx *ctxp) 257 { 258 lockdep_assert_held(&ctxp->ctxlock); 259 260 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 261 "6313 NVMET Defer ctx release oxid x%x flg x%x\n", 262 ctxp->oxid, ctxp->flag); 263 264 if (ctxp->flag & LPFC_NVME_CTX_RLS) 265 return; 266 267 ctxp->flag |= LPFC_NVME_CTX_RLS; 268 spin_lock(&phba->sli4_hba.t_active_list_lock); 269 list_del(&ctxp->list); 270 spin_unlock(&phba->sli4_hba.t_active_list_lock); 271 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 272 list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list); 273 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 274 } 275 276 /** 277 * __lpfc_nvme_xmt_ls_rsp_cmp - Generic completion handler for the 278 * transmission of an NVME LS response. 279 * @phba: Pointer to HBA context object. 280 * @cmdwqe: Pointer to driver command WQE object. 281 * @rspwqe: Pointer to driver response WQE object. 282 * 283 * The function is called from SLI ring event handler with no 284 * lock held. The function frees memory resources used for the command 285 * used to send the NVME LS RSP. 286 **/ 287 void 288 __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 289 struct lpfc_iocbq *rspwqe) 290 { 291 struct lpfc_async_xchg_ctx *axchg = cmdwqe->context_un.axchg; 292 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 293 struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp; 294 uint32_t status, result; 295 296 status = bf_get(lpfc_wcqe_c_status, wcqe); 297 result = wcqe->parameter; 298 299 if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) { 300 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 301 "6410 NVMEx LS cmpl state mismatch IO x%x: " 302 "%d %d\n", 303 axchg->oxid, axchg->state, axchg->entry_cnt); 304 } 305 306 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x result x%x\n", 307 axchg->oxid, status, result); 308 309 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 310 "6038 NVMEx LS rsp cmpl: %d %d oxid x%x\n", 311 status, result, axchg->oxid); 312 313 lpfc_nlp_put(cmdwqe->ndlp); 314 cmdwqe->context_un.axchg = NULL; 315 cmdwqe->bpl_dmabuf = NULL; 316 lpfc_sli_release_iocbq(phba, cmdwqe); 317 ls_rsp->done(ls_rsp); 318 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 319 "6200 NVMEx LS rsp cmpl done status %d oxid x%x\n", 320 status, axchg->oxid); 321 kfree(axchg); 322 } 323 324 /** 325 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response 326 * @phba: Pointer to HBA context object. 327 * @cmdwqe: Pointer to driver command WQE object. 328 * @rspwqe: Pointer to driver response WQE object. 329 * 330 * The function is called from SLI ring event handler with no 331 * lock held. This function is the completion handler for NVME LS commands 332 * The function updates any states and statistics, then calls the 333 * generic completion handler to free resources. 334 **/ 335 static void 336 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 337 struct lpfc_iocbq *rspwqe) 338 { 339 struct lpfc_nvmet_tgtport *tgtp; 340 uint32_t status, result; 341 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 342 343 if (!phba->targetport) 344 goto finish; 345 346 status = bf_get(lpfc_wcqe_c_status, wcqe); 347 result = wcqe->parameter; 348 349 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 350 if (tgtp) { 351 if (status) { 352 atomic_inc(&tgtp->xmt_ls_rsp_error); 353 if (result == IOERR_ABORT_REQUESTED) 354 atomic_inc(&tgtp->xmt_ls_rsp_aborted); 355 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 356 atomic_inc(&tgtp->xmt_ls_rsp_xb_set); 357 } else { 358 atomic_inc(&tgtp->xmt_ls_rsp_cmpl); 359 } 360 } 361 362 finish: 363 __lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, rspwqe); 364 } 365 366 /** 367 * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context 368 * @phba: HBA buffer is associated with 369 * @ctx_buf: ctx buffer context 370 * 371 * Description: Frees the given DMA buffer in the appropriate way given by 372 * reposting it to its associated RQ so it can be reused. 373 * 374 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 375 * 376 * Returns: None 377 **/ 378 void 379 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) 380 { 381 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 382 struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context; 383 struct lpfc_nvmet_tgtport *tgtp; 384 struct fc_frame_header *fc_hdr; 385 struct rqb_dmabuf *nvmebuf; 386 struct lpfc_nvmet_ctx_info *infop; 387 uint32_t size, oxid, sid; 388 int cpu; 389 unsigned long iflag; 390 391 if (ctxp->state == LPFC_NVME_STE_FREE) { 392 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 393 "6411 NVMET free, already free IO x%x: %d %d\n", 394 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 395 } 396 397 if (ctxp->rqb_buffer) { 398 spin_lock_irqsave(&ctxp->ctxlock, iflag); 399 nvmebuf = ctxp->rqb_buffer; 400 /* check if freed in another path whilst acquiring lock */ 401 if (nvmebuf) { 402 ctxp->rqb_buffer = NULL; 403 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) { 404 ctxp->flag &= ~LPFC_NVME_CTX_REUSE_WQ; 405 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 406 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, 407 nvmebuf); 408 } else { 409 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 410 /* repost */ 411 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 412 } 413 } else { 414 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 415 } 416 } 417 ctxp->state = LPFC_NVME_STE_FREE; 418 419 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 420 if (phba->sli4_hba.nvmet_io_wait_cnt) { 421 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list, 422 nvmebuf, struct rqb_dmabuf, 423 hbuf.list); 424 phba->sli4_hba.nvmet_io_wait_cnt--; 425 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 426 iflag); 427 428 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 429 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 430 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 431 size = nvmebuf->bytes_recv; 432 sid = sli4_sid_from_fc_hdr(fc_hdr); 433 434 ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context; 435 ctxp->wqeq = NULL; 436 ctxp->offset = 0; 437 ctxp->phba = phba; 438 ctxp->size = size; 439 ctxp->oxid = oxid; 440 ctxp->sid = sid; 441 ctxp->state = LPFC_NVME_STE_RCV; 442 ctxp->entry_cnt = 1; 443 ctxp->flag = 0; 444 ctxp->ctxbuf = ctx_buf; 445 ctxp->rqb_buffer = (void *)nvmebuf; 446 spin_lock_init(&ctxp->ctxlock); 447 448 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 449 /* NOTE: isr time stamp is stale when context is re-assigned*/ 450 if (ctxp->ts_isr_cmd) { 451 ctxp->ts_cmd_nvme = 0; 452 ctxp->ts_nvme_data = 0; 453 ctxp->ts_data_wqput = 0; 454 ctxp->ts_isr_data = 0; 455 ctxp->ts_data_nvme = 0; 456 ctxp->ts_nvme_status = 0; 457 ctxp->ts_status_wqput = 0; 458 ctxp->ts_isr_status = 0; 459 ctxp->ts_status_nvme = 0; 460 } 461 #endif 462 atomic_inc(&tgtp->rcv_fcp_cmd_in); 463 464 /* Indicate that a replacement buffer has been posted */ 465 spin_lock_irqsave(&ctxp->ctxlock, iflag); 466 ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ; 467 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 468 469 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 470 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 471 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 472 "6181 Unable to queue deferred work " 473 "for oxid x%x. " 474 "FCP Drop IO [x%x x%x x%x]\n", 475 ctxp->oxid, 476 atomic_read(&tgtp->rcv_fcp_cmd_in), 477 atomic_read(&tgtp->rcv_fcp_cmd_out), 478 atomic_read(&tgtp->xmt_fcp_release)); 479 480 spin_lock_irqsave(&ctxp->ctxlock, iflag); 481 lpfc_nvmet_defer_release(phba, ctxp); 482 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 483 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 484 } 485 return; 486 } 487 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 488 489 /* 490 * Use the CPU context list, from the MRQ the IO was received on 491 * (ctxp->idx), to save context structure. 492 */ 493 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 494 list_del_init(&ctxp->list); 495 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 496 cpu = raw_smp_processor_id(); 497 infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx); 498 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag); 499 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 500 infop->nvmet_ctx_list_cnt++; 501 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag); 502 #endif 503 } 504 505 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 506 static void 507 lpfc_nvmet_ktime(struct lpfc_hba *phba, 508 struct lpfc_async_xchg_ctx *ctxp) 509 { 510 uint64_t seg1, seg2, seg3, seg4, seg5; 511 uint64_t seg6, seg7, seg8, seg9, seg10; 512 uint64_t segsum; 513 514 if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme || 515 !ctxp->ts_nvme_data || !ctxp->ts_data_wqput || 516 !ctxp->ts_isr_data || !ctxp->ts_data_nvme || 517 !ctxp->ts_nvme_status || !ctxp->ts_status_wqput || 518 !ctxp->ts_isr_status || !ctxp->ts_status_nvme) 519 return; 520 521 if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd) 522 return; 523 if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme) 524 return; 525 if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data) 526 return; 527 if (ctxp->ts_nvme_data > ctxp->ts_data_wqput) 528 return; 529 if (ctxp->ts_data_wqput > ctxp->ts_isr_data) 530 return; 531 if (ctxp->ts_isr_data > ctxp->ts_data_nvme) 532 return; 533 if (ctxp->ts_data_nvme > ctxp->ts_nvme_status) 534 return; 535 if (ctxp->ts_nvme_status > ctxp->ts_status_wqput) 536 return; 537 if (ctxp->ts_status_wqput > ctxp->ts_isr_status) 538 return; 539 if (ctxp->ts_isr_status > ctxp->ts_status_nvme) 540 return; 541 /* 542 * Segment 1 - Time from FCP command received by MSI-X ISR 543 * to FCP command is passed to NVME Layer. 544 * Segment 2 - Time from FCP command payload handed 545 * off to NVME Layer to Driver receives a Command op 546 * from NVME Layer. 547 * Segment 3 - Time from Driver receives a Command op 548 * from NVME Layer to Command is put on WQ. 549 * Segment 4 - Time from Driver WQ put is done 550 * to MSI-X ISR for Command cmpl. 551 * Segment 5 - Time from MSI-X ISR for Command cmpl to 552 * Command cmpl is passed to NVME Layer. 553 * Segment 6 - Time from Command cmpl is passed to NVME 554 * Layer to Driver receives a RSP op from NVME Layer. 555 * Segment 7 - Time from Driver receives a RSP op from 556 * NVME Layer to WQ put is done on TRSP FCP Status. 557 * Segment 8 - Time from Driver WQ put is done on TRSP 558 * FCP Status to MSI-X ISR for TRSP cmpl. 559 * Segment 9 - Time from MSI-X ISR for TRSP cmpl to 560 * TRSP cmpl is passed to NVME Layer. 561 * Segment 10 - Time from FCP command received by 562 * MSI-X ISR to command is completed on wire. 563 * (Segments 1 thru 8) for READDATA / WRITEDATA 564 * (Segments 1 thru 4) for READDATA_RSP 565 */ 566 seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd; 567 segsum = seg1; 568 569 seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd; 570 if (segsum > seg2) 571 return; 572 seg2 -= segsum; 573 segsum += seg2; 574 575 seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd; 576 if (segsum > seg3) 577 return; 578 seg3 -= segsum; 579 segsum += seg3; 580 581 seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd; 582 if (segsum > seg4) 583 return; 584 seg4 -= segsum; 585 segsum += seg4; 586 587 seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd; 588 if (segsum > seg5) 589 return; 590 seg5 -= segsum; 591 segsum += seg5; 592 593 594 /* For auto rsp commands seg6 thru seg10 will be 0 */ 595 if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) { 596 seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd; 597 if (segsum > seg6) 598 return; 599 seg6 -= segsum; 600 segsum += seg6; 601 602 seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd; 603 if (segsum > seg7) 604 return; 605 seg7 -= segsum; 606 segsum += seg7; 607 608 seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd; 609 if (segsum > seg8) 610 return; 611 seg8 -= segsum; 612 segsum += seg8; 613 614 seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd; 615 if (segsum > seg9) 616 return; 617 seg9 -= segsum; 618 segsum += seg9; 619 620 if (ctxp->ts_isr_status < ctxp->ts_isr_cmd) 621 return; 622 seg10 = (ctxp->ts_isr_status - 623 ctxp->ts_isr_cmd); 624 } else { 625 if (ctxp->ts_isr_data < ctxp->ts_isr_cmd) 626 return; 627 seg6 = 0; 628 seg7 = 0; 629 seg8 = 0; 630 seg9 = 0; 631 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd); 632 } 633 634 phba->ktime_seg1_total += seg1; 635 if (seg1 < phba->ktime_seg1_min) 636 phba->ktime_seg1_min = seg1; 637 else if (seg1 > phba->ktime_seg1_max) 638 phba->ktime_seg1_max = seg1; 639 640 phba->ktime_seg2_total += seg2; 641 if (seg2 < phba->ktime_seg2_min) 642 phba->ktime_seg2_min = seg2; 643 else if (seg2 > phba->ktime_seg2_max) 644 phba->ktime_seg2_max = seg2; 645 646 phba->ktime_seg3_total += seg3; 647 if (seg3 < phba->ktime_seg3_min) 648 phba->ktime_seg3_min = seg3; 649 else if (seg3 > phba->ktime_seg3_max) 650 phba->ktime_seg3_max = seg3; 651 652 phba->ktime_seg4_total += seg4; 653 if (seg4 < phba->ktime_seg4_min) 654 phba->ktime_seg4_min = seg4; 655 else if (seg4 > phba->ktime_seg4_max) 656 phba->ktime_seg4_max = seg4; 657 658 phba->ktime_seg5_total += seg5; 659 if (seg5 < phba->ktime_seg5_min) 660 phba->ktime_seg5_min = seg5; 661 else if (seg5 > phba->ktime_seg5_max) 662 phba->ktime_seg5_max = seg5; 663 664 phba->ktime_data_samples++; 665 if (!seg6) 666 goto out; 667 668 phba->ktime_seg6_total += seg6; 669 if (seg6 < phba->ktime_seg6_min) 670 phba->ktime_seg6_min = seg6; 671 else if (seg6 > phba->ktime_seg6_max) 672 phba->ktime_seg6_max = seg6; 673 674 phba->ktime_seg7_total += seg7; 675 if (seg7 < phba->ktime_seg7_min) 676 phba->ktime_seg7_min = seg7; 677 else if (seg7 > phba->ktime_seg7_max) 678 phba->ktime_seg7_max = seg7; 679 680 phba->ktime_seg8_total += seg8; 681 if (seg8 < phba->ktime_seg8_min) 682 phba->ktime_seg8_min = seg8; 683 else if (seg8 > phba->ktime_seg8_max) 684 phba->ktime_seg8_max = seg8; 685 686 phba->ktime_seg9_total += seg9; 687 if (seg9 < phba->ktime_seg9_min) 688 phba->ktime_seg9_min = seg9; 689 else if (seg9 > phba->ktime_seg9_max) 690 phba->ktime_seg9_max = seg9; 691 out: 692 phba->ktime_seg10_total += seg10; 693 if (seg10 < phba->ktime_seg10_min) 694 phba->ktime_seg10_min = seg10; 695 else if (seg10 > phba->ktime_seg10_max) 696 phba->ktime_seg10_max = seg10; 697 phba->ktime_status_samples++; 698 } 699 #endif 700 701 /** 702 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response 703 * @phba: Pointer to HBA context object. 704 * @cmdwqe: Pointer to driver command WQE object. 705 * @rspwqe: Pointer to driver response WQE object. 706 * 707 * The function is called from SLI ring event handler with no 708 * lock held. This function is the completion handler for NVME FCP commands 709 * The function frees memory resources used for the NVME commands. 710 **/ 711 static void 712 lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 713 struct lpfc_iocbq *rspwqe) 714 { 715 struct lpfc_nvmet_tgtport *tgtp; 716 struct nvmefc_tgt_fcp_req *rsp; 717 struct lpfc_async_xchg_ctx *ctxp; 718 uint32_t status, result, op, logerr; 719 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 720 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 721 int id; 722 #endif 723 724 ctxp = cmdwqe->context_un.axchg; 725 ctxp->flag &= ~LPFC_NVME_IO_INP; 726 727 rsp = &ctxp->hdlrctx.fcp_req; 728 op = rsp->op; 729 730 status = bf_get(lpfc_wcqe_c_status, wcqe); 731 result = wcqe->parameter; 732 733 if (phba->targetport) 734 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 735 else 736 tgtp = NULL; 737 738 lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n", 739 ctxp->oxid, op, status); 740 741 if (status) { 742 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR; 743 rsp->transferred_length = 0; 744 if (tgtp) { 745 atomic_inc(&tgtp->xmt_fcp_rsp_error); 746 if (result == IOERR_ABORT_REQUESTED) 747 atomic_inc(&tgtp->xmt_fcp_rsp_aborted); 748 } 749 750 logerr = LOG_NVME_IOERR; 751 752 /* pick up SLI4 exhange busy condition */ 753 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 754 ctxp->flag |= LPFC_NVME_XBUSY; 755 logerr |= LOG_NVME_ABTS; 756 if (tgtp) 757 atomic_inc(&tgtp->xmt_fcp_rsp_xb_set); 758 759 } else { 760 ctxp->flag &= ~LPFC_NVME_XBUSY; 761 } 762 763 lpfc_printf_log(phba, KERN_INFO, logerr, 764 "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x " 765 "XBUSY:x%x\n", 766 ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag, 767 status, result, ctxp->flag); 768 769 } else { 770 rsp->fcp_error = NVME_SC_SUCCESS; 771 if (op == NVMET_FCOP_RSP) 772 rsp->transferred_length = rsp->rsplen; 773 else 774 rsp->transferred_length = rsp->transfer_length; 775 if (tgtp) 776 atomic_inc(&tgtp->xmt_fcp_rsp_cmpl); 777 } 778 779 if ((op == NVMET_FCOP_READDATA_RSP) || 780 (op == NVMET_FCOP_RSP)) { 781 /* Sanity check */ 782 ctxp->state = LPFC_NVME_STE_DONE; 783 ctxp->entry_cnt++; 784 785 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 786 if (ctxp->ts_cmd_nvme) { 787 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 788 ctxp->ts_isr_data = 789 cmdwqe->isr_timestamp; 790 ctxp->ts_data_nvme = 791 ktime_get_ns(); 792 ctxp->ts_nvme_status = 793 ctxp->ts_data_nvme; 794 ctxp->ts_status_wqput = 795 ctxp->ts_data_nvme; 796 ctxp->ts_isr_status = 797 ctxp->ts_data_nvme; 798 ctxp->ts_status_nvme = 799 ctxp->ts_data_nvme; 800 } else { 801 ctxp->ts_isr_status = 802 cmdwqe->isr_timestamp; 803 ctxp->ts_status_nvme = 804 ktime_get_ns(); 805 } 806 } 807 #endif 808 rsp->done(rsp); 809 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 810 if (ctxp->ts_cmd_nvme) 811 lpfc_nvmet_ktime(phba, ctxp); 812 #endif 813 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */ 814 } else { 815 ctxp->entry_cnt++; 816 memset_startat(cmdwqe, 0, cmd_flag); 817 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 818 if (ctxp->ts_cmd_nvme) { 819 ctxp->ts_isr_data = cmdwqe->isr_timestamp; 820 ctxp->ts_data_nvme = ktime_get_ns(); 821 } 822 #endif 823 rsp->done(rsp); 824 } 825 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 826 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 827 id = raw_smp_processor_id(); 828 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 829 if (ctxp->cpu != id) 830 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 831 "6704 CPU Check cmdcmpl: " 832 "cpu %d expect %d\n", 833 id, ctxp->cpu); 834 } 835 #endif 836 } 837 838 /** 839 * __lpfc_nvme_xmt_ls_rsp - Generic service routine to issue transmit 840 * an NVME LS rsp for a prior NVME LS request that was received. 841 * @axchg: pointer to exchange context for the NVME LS request the response 842 * is for. 843 * @ls_rsp: pointer to the transport LS RSP that is to be sent 844 * @xmt_ls_rsp_cmp: completion routine to call upon RSP transmit done 845 * 846 * This routine is used to format and send a WQE to transmit a NVME LS 847 * Response. The response is for a prior NVME LS request that was 848 * received and posted to the transport. 849 * 850 * Returns: 851 * 0 : if response successfully transmit 852 * non-zero : if response failed to transmit, of the form -Exxx. 853 **/ 854 int 855 __lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg, 856 struct nvmefc_ls_rsp *ls_rsp, 857 void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba, 858 struct lpfc_iocbq *cmdwqe, 859 struct lpfc_iocbq *rspwqe)) 860 { 861 struct lpfc_hba *phba = axchg->phba; 862 struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer; 863 struct lpfc_iocbq *nvmewqeq; 864 struct lpfc_dmabuf dmabuf; 865 struct ulp_bde64 bpl; 866 int rc; 867 868 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) 869 return -ENODEV; 870 871 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 872 "6023 NVMEx LS rsp oxid x%x\n", axchg->oxid); 873 874 if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) { 875 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 876 "6412 NVMEx LS rsp state mismatch " 877 "oxid x%x: %d %d\n", 878 axchg->oxid, axchg->state, axchg->entry_cnt); 879 return -EALREADY; 880 } 881 axchg->state = LPFC_NVME_STE_LS_RSP; 882 axchg->entry_cnt++; 883 884 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, ls_rsp->rspdma, 885 ls_rsp->rsplen); 886 if (nvmewqeq == NULL) { 887 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 888 "6150 NVMEx LS Drop Rsp x%x: Prep\n", 889 axchg->oxid); 890 rc = -ENOMEM; 891 goto out_free_buf; 892 } 893 894 /* Save numBdes for bpl2sgl */ 895 nvmewqeq->num_bdes = 1; 896 nvmewqeq->hba_wqidx = 0; 897 nvmewqeq->bpl_dmabuf = &dmabuf; 898 dmabuf.virt = &bpl; 899 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; 900 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; 901 bpl.tus.f.bdeSize = ls_rsp->rsplen; 902 bpl.tus.f.bdeFlags = 0; 903 bpl.tus.w = le32_to_cpu(bpl.tus.w); 904 /* 905 * Note: although we're using stack space for the dmabuf, the 906 * call to lpfc_sli4_issue_wqe is synchronous, so it will not 907 * be referenced after it returns back to this routine. 908 */ 909 910 nvmewqeq->cmd_cmpl = xmt_ls_rsp_cmp; 911 nvmewqeq->context_un.axchg = axchg; 912 913 lpfc_nvmeio_data(phba, "NVMEx LS RSP: xri x%x wqidx x%x len x%x\n", 914 axchg->oxid, nvmewqeq->hba_wqidx, ls_rsp->rsplen); 915 916 rc = lpfc_sli4_issue_wqe(phba, axchg->hdwq, nvmewqeq); 917 918 /* clear to be sure there's no reference */ 919 nvmewqeq->bpl_dmabuf = NULL; 920 921 if (rc == WQE_SUCCESS) { 922 /* 923 * Okay to repost buffer here, but wait till cmpl 924 * before freeing ctxp and iocbq. 925 */ 926 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 927 return 0; 928 } 929 930 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 931 "6151 NVMEx LS RSP x%x: failed to transmit %d\n", 932 axchg->oxid, rc); 933 934 rc = -ENXIO; 935 936 lpfc_nlp_put(nvmewqeq->ndlp); 937 938 out_free_buf: 939 /* Give back resources */ 940 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 941 942 /* 943 * As transport doesn't track completions of responses, if the rsp 944 * fails to send, the transport will effectively ignore the rsp 945 * and consider the LS done. However, the driver has an active 946 * exchange open for the LS - so be sure to abort the exchange 947 * if the response isn't sent. 948 */ 949 lpfc_nvme_unsol_ls_issue_abort(phba, axchg, axchg->sid, axchg->oxid); 950 return rc; 951 } 952 953 /** 954 * lpfc_nvmet_xmt_ls_rsp - Transmit NVME LS response 955 * @tgtport: pointer to target port that NVME LS is to be transmit from. 956 * @ls_rsp: pointer to the transport LS RSP that is to be sent 957 * 958 * Driver registers this routine to transmit responses for received NVME 959 * LS requests. 960 * 961 * This routine is used to format and send a WQE to transmit a NVME LS 962 * Response. The ls_rsp is used to reverse-map the LS to the original 963 * NVME LS request sequence, which provides addressing information for 964 * the remote port the LS to be sent to, as well as the exchange id 965 * that is the LS is bound to. 966 * 967 * Returns: 968 * 0 : if response successfully transmit 969 * non-zero : if response failed to transmit, of the form -Exxx. 970 **/ 971 static int 972 lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, 973 struct nvmefc_ls_rsp *ls_rsp) 974 { 975 struct lpfc_async_xchg_ctx *axchg = 976 container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp); 977 struct lpfc_nvmet_tgtport *nvmep = tgtport->private; 978 int rc; 979 980 if (test_bit(FC_UNLOADING, &axchg->phba->pport->load_flag)) 981 return -ENODEV; 982 983 rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, lpfc_nvmet_xmt_ls_rsp_cmp); 984 985 if (rc) { 986 atomic_inc(&nvmep->xmt_ls_drop); 987 /* 988 * unless the failure is due to having already sent 989 * the response, an abort will be generated for the 990 * exchange if the rsp can't be sent. 991 */ 992 if (rc != -EALREADY) 993 atomic_inc(&nvmep->xmt_ls_abort); 994 return rc; 995 } 996 997 atomic_inc(&nvmep->xmt_ls_rsp); 998 return 0; 999 } 1000 1001 static int 1002 lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, 1003 struct nvmefc_tgt_fcp_req *rsp) 1004 { 1005 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1006 struct lpfc_async_xchg_ctx *ctxp = 1007 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); 1008 struct lpfc_hba *phba = ctxp->phba; 1009 struct lpfc_queue *wq; 1010 struct lpfc_iocbq *nvmewqeq; 1011 struct lpfc_sli_ring *pring; 1012 unsigned long iflags; 1013 int rc; 1014 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1015 int id; 1016 #endif 1017 1018 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) { 1019 rc = -ENODEV; 1020 goto aerr; 1021 } 1022 1023 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1024 if (ctxp->ts_cmd_nvme) { 1025 if (rsp->op == NVMET_FCOP_RSP) 1026 ctxp->ts_nvme_status = ktime_get_ns(); 1027 else 1028 ctxp->ts_nvme_data = ktime_get_ns(); 1029 } 1030 1031 /* Setup the hdw queue if not already set */ 1032 if (!ctxp->hdwq) 1033 ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid]; 1034 1035 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 1036 id = raw_smp_processor_id(); 1037 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 1038 if (rsp->hwqid != id) 1039 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1040 "6705 CPU Check OP: " 1041 "cpu %d expect %d\n", 1042 id, rsp->hwqid); 1043 ctxp->cpu = id; /* Setup cpu for cmpl check */ 1044 } 1045 #endif 1046 1047 /* Sanity check */ 1048 if ((ctxp->flag & LPFC_NVME_ABTS_RCV) || 1049 (ctxp->state == LPFC_NVME_STE_ABORT)) { 1050 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1051 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1052 "6102 IO oxid x%x aborted\n", 1053 ctxp->oxid); 1054 rc = -ENXIO; 1055 goto aerr; 1056 } 1057 1058 nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); 1059 if (nvmewqeq == NULL) { 1060 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1061 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1062 "6152 FCP Drop IO x%x: Prep\n", 1063 ctxp->oxid); 1064 rc = -ENXIO; 1065 goto aerr; 1066 } 1067 1068 nvmewqeq->cmd_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; 1069 nvmewqeq->context_un.axchg = ctxp; 1070 nvmewqeq->cmd_flag |= LPFC_IO_NVMET; 1071 ctxp->wqeq->hba_wqidx = rsp->hwqid; 1072 1073 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n", 1074 ctxp->oxid, rsp->op, rsp->rsplen); 1075 1076 ctxp->flag |= LPFC_NVME_IO_INP; 1077 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1078 if (rc == WQE_SUCCESS) { 1079 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1080 if (!ctxp->ts_cmd_nvme) 1081 return 0; 1082 if (rsp->op == NVMET_FCOP_RSP) 1083 ctxp->ts_status_wqput = ktime_get_ns(); 1084 else 1085 ctxp->ts_data_wqput = ktime_get_ns(); 1086 #endif 1087 return 0; 1088 } 1089 1090 if (rc == -EBUSY) { 1091 /* 1092 * WQ was full, so queue nvmewqeq to be sent after 1093 * WQE release CQE 1094 */ 1095 ctxp->flag |= LPFC_NVME_DEFER_WQFULL; 1096 wq = ctxp->hdwq->io_wq; 1097 pring = wq->pring; 1098 spin_lock_irqsave(&pring->ring_lock, iflags); 1099 list_add_tail(&nvmewqeq->list, &wq->wqfull_list); 1100 wq->q_flag |= HBA_NVMET_WQFULL; 1101 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1102 atomic_inc(&lpfc_nvmep->defer_wqfull); 1103 return 0; 1104 } 1105 1106 /* Give back resources */ 1107 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1108 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1109 "6153 FCP Drop IO x%x: Issue: %d\n", 1110 ctxp->oxid, rc); 1111 1112 ctxp->wqeq->hba_wqidx = 0; 1113 nvmewqeq->context_un.axchg = NULL; 1114 nvmewqeq->bpl_dmabuf = NULL; 1115 rc = -EBUSY; 1116 aerr: 1117 return rc; 1118 } 1119 1120 static void 1121 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) 1122 { 1123 struct lpfc_nvmet_tgtport *tport = targetport->private; 1124 1125 /* release any threads waiting for the unreg to complete */ 1126 if (tport->phba->targetport) 1127 complete(tport->tport_unreg_cmp); 1128 } 1129 1130 static void 1131 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport, 1132 struct nvmefc_tgt_fcp_req *req) 1133 { 1134 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1135 struct lpfc_async_xchg_ctx *ctxp = 1136 container_of(req, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); 1137 struct lpfc_hba *phba = ctxp->phba; 1138 struct lpfc_queue *wq; 1139 unsigned long flags; 1140 1141 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) 1142 return; 1143 1144 if (!ctxp->hdwq) 1145 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1146 1147 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1148 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n", 1149 ctxp->oxid, ctxp->flag, ctxp->state); 1150 1151 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n", 1152 ctxp->oxid, ctxp->flag, ctxp->state); 1153 1154 atomic_inc(&lpfc_nvmep->xmt_fcp_abort); 1155 1156 spin_lock_irqsave(&ctxp->ctxlock, flags); 1157 1158 /* Since iaab/iaar are NOT set, we need to check 1159 * if the firmware is in process of aborting IO 1160 */ 1161 if (ctxp->flag & (LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP)) { 1162 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1163 return; 1164 } 1165 ctxp->flag |= LPFC_NVME_ABORT_OP; 1166 1167 if (ctxp->flag & LPFC_NVME_DEFER_WQFULL) { 1168 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1169 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1170 ctxp->oxid); 1171 wq = ctxp->hdwq->io_wq; 1172 lpfc_nvmet_wqfull_flush(phba, wq, ctxp); 1173 return; 1174 } 1175 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1176 1177 /* A state of LPFC_NVME_STE_RCV means we have just received 1178 * the NVME command and have not started processing it. 1179 * (by issuing any IO WQEs on this exchange yet) 1180 */ 1181 if (ctxp->state == LPFC_NVME_STE_RCV) 1182 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1183 ctxp->oxid); 1184 else 1185 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1186 ctxp->oxid); 1187 } 1188 1189 static void 1190 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport, 1191 struct nvmefc_tgt_fcp_req *rsp) 1192 { 1193 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1194 struct lpfc_async_xchg_ctx *ctxp = 1195 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); 1196 struct lpfc_hba *phba = ctxp->phba; 1197 unsigned long flags; 1198 bool aborting = false; 1199 1200 spin_lock_irqsave(&ctxp->ctxlock, flags); 1201 if (ctxp->flag & LPFC_NVME_XBUSY) 1202 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1203 "6027 NVMET release with XBUSY flag x%x" 1204 " oxid x%x\n", 1205 ctxp->flag, ctxp->oxid); 1206 else if (ctxp->state != LPFC_NVME_STE_DONE && 1207 ctxp->state != LPFC_NVME_STE_ABORT) 1208 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1209 "6413 NVMET release bad state %d %d oxid x%x\n", 1210 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 1211 1212 if ((ctxp->flag & LPFC_NVME_ABORT_OP) || 1213 (ctxp->flag & LPFC_NVME_XBUSY)) { 1214 aborting = true; 1215 /* let the abort path do the real release */ 1216 lpfc_nvmet_defer_release(phba, ctxp); 1217 } 1218 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1219 1220 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid, 1221 ctxp->state, aborting); 1222 1223 atomic_inc(&lpfc_nvmep->xmt_fcp_release); 1224 ctxp->flag &= ~LPFC_NVME_TNOTIFY; 1225 1226 if (aborting) 1227 return; 1228 1229 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1230 } 1231 1232 static void 1233 lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport, 1234 struct nvmefc_tgt_fcp_req *rsp) 1235 { 1236 struct lpfc_nvmet_tgtport *tgtp; 1237 struct lpfc_async_xchg_ctx *ctxp = 1238 container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); 1239 struct rqb_dmabuf *nvmebuf; 1240 struct lpfc_hba *phba = ctxp->phba; 1241 unsigned long iflag; 1242 1243 1244 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n", 1245 ctxp->oxid, ctxp->size, raw_smp_processor_id()); 1246 1247 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1248 nvmebuf = ctxp->rqb_buffer; 1249 if (!nvmebuf) { 1250 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1251 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1252 "6425 Defer rcv: no buffer oxid x%x: " 1253 "flg %x ste %x\n", 1254 ctxp->oxid, ctxp->flag, ctxp->state); 1255 return; 1256 } 1257 ctxp->rqb_buffer = NULL; 1258 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1259 1260 tgtp = phba->targetport->private; 1261 if (tgtp) 1262 atomic_inc(&tgtp->rcv_fcp_cmd_defer); 1263 1264 /* Free the nvmebuf since a new buffer already replaced it */ 1265 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1266 } 1267 1268 /** 1269 * lpfc_nvmet_ls_req_cmp - completion handler for a nvme ls request 1270 * @phba: Pointer to HBA context object 1271 * @cmdwqe: Pointer to driver command WQE object. 1272 * @rspwqe: Pointer to driver response WQE object. 1273 * 1274 * This function is the completion handler for NVME LS requests. 1275 * The function updates any states and statistics, then calls the 1276 * generic completion handler to finish completion of the request. 1277 **/ 1278 static void 1279 lpfc_nvmet_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 1280 struct lpfc_iocbq *rspwqe) 1281 { 1282 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 1283 __lpfc_nvme_ls_req_cmp(phba, cmdwqe->vport, cmdwqe, wcqe); 1284 } 1285 1286 /** 1287 * lpfc_nvmet_ls_req - Issue an Link Service request 1288 * @targetport: pointer to target instance registered with nvmet transport. 1289 * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv. 1290 * Driver sets this value to the ndlp pointer. 1291 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 1292 * 1293 * Driver registers this routine to handle any link service request 1294 * from the nvme_fc transport to a remote nvme-aware port. 1295 * 1296 * Return value : 1297 * 0 - Success 1298 * non-zero: various error codes, in form of -Exxx 1299 **/ 1300 static int 1301 lpfc_nvmet_ls_req(struct nvmet_fc_target_port *targetport, 1302 void *hosthandle, 1303 struct nvmefc_ls_req *pnvme_lsreq) 1304 { 1305 struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private; 1306 struct lpfc_hba *phba; 1307 struct lpfc_nodelist *ndlp; 1308 int ret; 1309 u32 hstate; 1310 1311 if (!lpfc_nvmet) 1312 return -EINVAL; 1313 1314 phba = lpfc_nvmet->phba; 1315 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) 1316 return -EINVAL; 1317 1318 hstate = atomic_read(&lpfc_nvmet->state); 1319 if (hstate == LPFC_NVMET_INV_HOST_ACTIVE) 1320 return -EACCES; 1321 1322 ndlp = (struct lpfc_nodelist *)hosthandle; 1323 1324 ret = __lpfc_nvme_ls_req(phba->pport, ndlp, pnvme_lsreq, 1325 lpfc_nvmet_ls_req_cmp); 1326 1327 return ret; 1328 } 1329 1330 /** 1331 * lpfc_nvmet_ls_abort - Abort a prior NVME LS request 1332 * @targetport: Transport targetport, that LS was issued from. 1333 * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv. 1334 * Driver sets this value to the ndlp pointer. 1335 * @pnvme_lsreq: the transport nvme_ls_req structure for LS to be aborted 1336 * 1337 * Driver registers this routine to abort an NVME LS request that is 1338 * in progress (from the transports perspective). 1339 **/ 1340 static void 1341 lpfc_nvmet_ls_abort(struct nvmet_fc_target_port *targetport, 1342 void *hosthandle, 1343 struct nvmefc_ls_req *pnvme_lsreq) 1344 { 1345 struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private; 1346 struct lpfc_hba *phba; 1347 struct lpfc_nodelist *ndlp; 1348 int ret; 1349 1350 phba = lpfc_nvmet->phba; 1351 if (test_bit(FC_UNLOADING, &phba->pport->load_flag)) 1352 return; 1353 1354 ndlp = (struct lpfc_nodelist *)hosthandle; 1355 1356 ret = __lpfc_nvme_ls_abort(phba->pport, ndlp, pnvme_lsreq); 1357 if (!ret) 1358 atomic_inc(&lpfc_nvmet->xmt_ls_abort); 1359 } 1360 1361 static int 1362 lpfc_nvmet_host_traddr(void *hosthandle, u64 *wwnn, u64 *wwpn) 1363 { 1364 struct lpfc_nodelist *ndlp = hosthandle; 1365 1366 *wwnn = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 1367 *wwpn = wwn_to_u64(ndlp->nlp_portname.u.wwn); 1368 return 0; 1369 } 1370 1371 static void 1372 lpfc_nvmet_host_release(void *hosthandle) 1373 { 1374 struct lpfc_nodelist *ndlp = hosthandle; 1375 struct lpfc_hba *phba = ndlp->phba; 1376 struct lpfc_nvmet_tgtport *tgtp; 1377 1378 if (!phba->targetport || !phba->targetport->private) 1379 return; 1380 1381 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1382 "6202 NVMET XPT releasing hosthandle x%px " 1383 "DID x%x xflags x%x refcnt %d\n", 1384 hosthandle, ndlp->nlp_DID, ndlp->fc4_xpt_flags, 1385 kref_read(&ndlp->kref)); 1386 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1387 spin_lock_irq(&ndlp->lock); 1388 ndlp->fc4_xpt_flags &= ~NLP_XPT_HAS_HH; 1389 spin_unlock_irq(&ndlp->lock); 1390 lpfc_nlp_put(ndlp); 1391 atomic_set(&tgtp->state, 0); 1392 } 1393 1394 static void 1395 lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport) 1396 { 1397 struct lpfc_nvmet_tgtport *tgtp; 1398 struct lpfc_hba *phba; 1399 uint32_t rc; 1400 1401 tgtp = tgtport->private; 1402 phba = tgtp->phba; 1403 1404 rc = lpfc_issue_els_rscn(phba->pport, 0); 1405 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1406 "6420 NVMET subsystem change: Notification %s\n", 1407 (rc) ? "Failed" : "Sent"); 1408 } 1409 1410 static struct nvmet_fc_target_template lpfc_tgttemplate = { 1411 .targetport_delete = lpfc_nvmet_targetport_delete, 1412 .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp, 1413 .fcp_op = lpfc_nvmet_xmt_fcp_op, 1414 .fcp_abort = lpfc_nvmet_xmt_fcp_abort, 1415 .fcp_req_release = lpfc_nvmet_xmt_fcp_release, 1416 .defer_rcv = lpfc_nvmet_defer_rcv, 1417 .discovery_event = lpfc_nvmet_discovery_event, 1418 .ls_req = lpfc_nvmet_ls_req, 1419 .ls_abort = lpfc_nvmet_ls_abort, 1420 .host_release = lpfc_nvmet_host_release, 1421 .host_traddr = lpfc_nvmet_host_traddr, 1422 1423 .max_hw_queues = 1, 1424 .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1425 .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1426 .dma_boundary = 0xFFFFFFFF, 1427 1428 /* optional features */ 1429 .target_features = 0, 1430 /* sizes of additional private data for data structures */ 1431 .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), 1432 .lsrqst_priv_sz = 0, 1433 }; 1434 1435 static void 1436 __lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba, 1437 struct lpfc_nvmet_ctx_info *infop) 1438 { 1439 struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf; 1440 unsigned long flags; 1441 1442 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags); 1443 list_for_each_entry_safe(ctx_buf, next_ctx_buf, 1444 &infop->nvmet_ctx_list, list) { 1445 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1446 list_del_init(&ctx_buf->list); 1447 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1448 1449 spin_lock(&phba->hbalock); 1450 __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag); 1451 spin_unlock(&phba->hbalock); 1452 1453 ctx_buf->sglq->state = SGL_FREED; 1454 ctx_buf->sglq->ndlp = NULL; 1455 1456 spin_lock(&phba->sli4_hba.sgl_list_lock); 1457 list_add_tail(&ctx_buf->sglq->list, 1458 &phba->sli4_hba.lpfc_nvmet_sgl_list); 1459 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1460 1461 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1462 kfree(ctx_buf->context); 1463 } 1464 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags); 1465 } 1466 1467 static void 1468 lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba) 1469 { 1470 struct lpfc_nvmet_ctx_info *infop; 1471 int i, j; 1472 1473 /* The first context list, MRQ 0 CPU 0 */ 1474 infop = phba->sli4_hba.nvmet_ctx_info; 1475 if (!infop) 1476 return; 1477 1478 /* Cycle the entire CPU context list for every MRQ */ 1479 for (i = 0; i < phba->cfg_nvmet_mrq; i++) { 1480 for_each_present_cpu(j) { 1481 infop = lpfc_get_ctx_list(phba, j, i); 1482 __lpfc_nvmet_clean_io_for_cpu(phba, infop); 1483 } 1484 } 1485 kfree(phba->sli4_hba.nvmet_ctx_info); 1486 phba->sli4_hba.nvmet_ctx_info = NULL; 1487 } 1488 1489 static int 1490 lpfc_nvmet_setup_io_context(struct lpfc_hba *phba) 1491 { 1492 struct lpfc_nvmet_ctxbuf *ctx_buf; 1493 struct lpfc_iocbq *nvmewqe; 1494 union lpfc_wqe128 *wqe; 1495 struct lpfc_nvmet_ctx_info *last_infop; 1496 struct lpfc_nvmet_ctx_info *infop; 1497 int i, j, idx, cpu; 1498 1499 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1500 "6403 Allocate NVMET resources for %d XRIs\n", 1501 phba->sli4_hba.nvmet_xri_cnt); 1502 1503 phba->sli4_hba.nvmet_ctx_info = kzalloc_objs(struct lpfc_nvmet_ctx_info, 1504 phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq); 1505 if (!phba->sli4_hba.nvmet_ctx_info) { 1506 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1507 "6419 Failed allocate memory for " 1508 "nvmet context lists\n"); 1509 return -ENOMEM; 1510 } 1511 1512 /* 1513 * Assuming X CPUs in the system, and Y MRQs, allocate some 1514 * lpfc_nvmet_ctx_info structures as follows: 1515 * 1516 * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0 1517 * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1 1518 * ... 1519 * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY 1520 * 1521 * Each line represents a MRQ "silo" containing an entry for 1522 * every CPU. 1523 * 1524 * MRQ X is initially assumed to be associated with CPU X, thus 1525 * contexts are initially distributed across all MRQs using 1526 * the MRQ index (N) as follows cpuN/mrqN. When contexts are 1527 * freed, the are freed to the MRQ silo based on the CPU number 1528 * of the IO completion. Thus a context that was allocated for MRQ A 1529 * whose IO completed on CPU B will be freed to cpuB/mrqA. 1530 */ 1531 for_each_possible_cpu(i) { 1532 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1533 infop = lpfc_get_ctx_list(phba, i, j); 1534 INIT_LIST_HEAD(&infop->nvmet_ctx_list); 1535 spin_lock_init(&infop->nvmet_ctx_list_lock); 1536 infop->nvmet_ctx_list_cnt = 0; 1537 } 1538 } 1539 1540 /* 1541 * Setup the next CPU context info ptr for each MRQ. 1542 * MRQ 0 will cycle thru CPUs 0 - X separately from 1543 * MRQ 1 cycling thru CPUs 0 - X, and so on. 1544 */ 1545 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1546 last_infop = lpfc_get_ctx_list(phba, 1547 cpumask_first(cpu_present_mask), 1548 j); 1549 for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) { 1550 infop = lpfc_get_ctx_list(phba, i, j); 1551 infop->nvmet_ctx_next_cpu = last_infop; 1552 last_infop = infop; 1553 } 1554 } 1555 1556 /* For all nvmet xris, allocate resources needed to process a 1557 * received command on a per xri basis. 1558 */ 1559 idx = 0; 1560 cpu = cpumask_first(cpu_present_mask); 1561 for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) { 1562 ctx_buf = kzalloc_obj(*ctx_buf); 1563 if (!ctx_buf) { 1564 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1565 "6404 Ran out of memory for NVMET\n"); 1566 return -ENOMEM; 1567 } 1568 1569 ctx_buf->context = kzalloc_obj(*ctx_buf->context); 1570 if (!ctx_buf->context) { 1571 kfree(ctx_buf); 1572 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1573 "6405 Ran out of NVMET " 1574 "context memory\n"); 1575 return -ENOMEM; 1576 } 1577 ctx_buf->context->ctxbuf = ctx_buf; 1578 ctx_buf->context->state = LPFC_NVME_STE_FREE; 1579 1580 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba); 1581 if (!ctx_buf->iocbq) { 1582 kfree(ctx_buf->context); 1583 kfree(ctx_buf); 1584 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1585 "6406 Ran out of NVMET iocb/WQEs\n"); 1586 return -ENOMEM; 1587 } 1588 ctx_buf->iocbq->cmd_flag = LPFC_IO_NVMET; 1589 nvmewqe = ctx_buf->iocbq; 1590 wqe = &nvmewqe->wqe; 1591 1592 /* Initialize WQE */ 1593 memset(wqe, 0, sizeof(*wqe)); 1594 1595 ctx_buf->iocbq->cmd_dmabuf = NULL; 1596 spin_lock(&phba->sli4_hba.sgl_list_lock); 1597 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq); 1598 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1599 if (!ctx_buf->sglq) { 1600 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1601 kfree(ctx_buf->context); 1602 kfree(ctx_buf); 1603 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1604 "6407 Ran out of NVMET XRIs\n"); 1605 return -ENOMEM; 1606 } 1607 INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work); 1608 1609 /* 1610 * Add ctx to MRQidx context list. Our initial assumption 1611 * is MRQidx will be associated with CPUidx. This association 1612 * can change on the fly. 1613 */ 1614 infop = lpfc_get_ctx_list(phba, cpu, idx); 1615 spin_lock(&infop->nvmet_ctx_list_lock); 1616 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 1617 infop->nvmet_ctx_list_cnt++; 1618 spin_unlock(&infop->nvmet_ctx_list_lock); 1619 1620 /* Spread ctx structures evenly across all MRQs */ 1621 idx++; 1622 if (idx >= phba->cfg_nvmet_mrq) { 1623 idx = 0; 1624 cpu = cpumask_first(cpu_present_mask); 1625 continue; 1626 } 1627 cpu = lpfc_next_present_cpu(cpu); 1628 } 1629 1630 for_each_present_cpu(i) { 1631 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1632 infop = lpfc_get_ctx_list(phba, i, j); 1633 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT, 1634 "6408 TOTAL NVMET ctx for CPU %d " 1635 "MRQ %d: cnt %d nextcpu x%px\n", 1636 i, j, infop->nvmet_ctx_list_cnt, 1637 infop->nvmet_ctx_next_cpu); 1638 } 1639 } 1640 return 0; 1641 } 1642 1643 int 1644 lpfc_nvmet_create_targetport(struct lpfc_hba *phba) 1645 { 1646 struct lpfc_vport *vport = phba->pport; 1647 struct lpfc_nvmet_tgtport *tgtp; 1648 struct nvmet_fc_port_info pinfo; 1649 int error; 1650 1651 if (phba->targetport) 1652 return 0; 1653 1654 error = lpfc_nvmet_setup_io_context(phba); 1655 if (error) 1656 return error; 1657 1658 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); 1659 pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 1660 pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 1661 pinfo.port_id = vport->fc_myDID; 1662 1663 /* We need to tell the transport layer + 1 because it takes page 1664 * alignment into account. When space for the SGL is allocated we 1665 * allocate + 3, one for cmd, one for rsp and one for this alignment 1666 */ 1667 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 1668 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue; 1669 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; 1670 1671 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1672 error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, 1673 &phba->pcidev->dev, 1674 &phba->targetport); 1675 #else 1676 error = -ENOENT; 1677 #endif 1678 if (error) { 1679 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1680 "6025 Cannot register NVME targetport x%x: " 1681 "portnm %llx nodenm %llx segs %d qs %d\n", 1682 error, 1683 pinfo.port_name, pinfo.node_name, 1684 lpfc_tgttemplate.max_sgl_segments, 1685 lpfc_tgttemplate.max_hw_queues); 1686 phba->targetport = NULL; 1687 phba->nvmet_support = 0; 1688 1689 lpfc_nvmet_cleanup_io_context(phba); 1690 1691 } else { 1692 tgtp = (struct lpfc_nvmet_tgtport *) 1693 phba->targetport->private; 1694 tgtp->phba = phba; 1695 1696 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 1697 "6026 Registered NVME " 1698 "targetport: x%px, private x%px " 1699 "portnm %llx nodenm %llx segs %d qs %d\n", 1700 phba->targetport, tgtp, 1701 pinfo.port_name, pinfo.node_name, 1702 lpfc_tgttemplate.max_sgl_segments, 1703 lpfc_tgttemplate.max_hw_queues); 1704 1705 atomic_set(&tgtp->rcv_ls_req_in, 0); 1706 atomic_set(&tgtp->rcv_ls_req_out, 0); 1707 atomic_set(&tgtp->rcv_ls_req_drop, 0); 1708 atomic_set(&tgtp->xmt_ls_abort, 0); 1709 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0); 1710 atomic_set(&tgtp->xmt_ls_rsp, 0); 1711 atomic_set(&tgtp->xmt_ls_drop, 0); 1712 atomic_set(&tgtp->xmt_ls_rsp_error, 0); 1713 atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0); 1714 atomic_set(&tgtp->xmt_ls_rsp_aborted, 0); 1715 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); 1716 atomic_set(&tgtp->rcv_fcp_cmd_in, 0); 1717 atomic_set(&tgtp->rcv_fcp_cmd_out, 0); 1718 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); 1719 atomic_set(&tgtp->xmt_fcp_drop, 0); 1720 atomic_set(&tgtp->xmt_fcp_read_rsp, 0); 1721 atomic_set(&tgtp->xmt_fcp_read, 0); 1722 atomic_set(&tgtp->xmt_fcp_write, 0); 1723 atomic_set(&tgtp->xmt_fcp_rsp, 0); 1724 atomic_set(&tgtp->xmt_fcp_release, 0); 1725 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); 1726 atomic_set(&tgtp->xmt_fcp_rsp_error, 0); 1727 atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0); 1728 atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0); 1729 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); 1730 atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0); 1731 atomic_set(&tgtp->xmt_fcp_abort, 0); 1732 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0); 1733 atomic_set(&tgtp->xmt_abort_unsol, 0); 1734 atomic_set(&tgtp->xmt_abort_sol, 0); 1735 atomic_set(&tgtp->xmt_abort_rsp, 0); 1736 atomic_set(&tgtp->xmt_abort_rsp_error, 0); 1737 atomic_set(&tgtp->defer_ctx, 0); 1738 atomic_set(&tgtp->defer_fod, 0); 1739 atomic_set(&tgtp->defer_wqfull, 0); 1740 } 1741 return error; 1742 } 1743 1744 int 1745 lpfc_nvmet_update_targetport(struct lpfc_hba *phba) 1746 { 1747 struct lpfc_vport *vport = phba->pport; 1748 1749 if (!phba->targetport) 1750 return 0; 1751 1752 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1753 "6007 Update NVMET port x%px did x%x\n", 1754 phba->targetport, vport->fc_myDID); 1755 1756 phba->targetport->port_id = vport->fc_myDID; 1757 return 0; 1758 } 1759 1760 /** 1761 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort 1762 * @phba: pointer to lpfc hba data structure. 1763 * @axri: pointer to the nvmet xri abort wcqe structure. 1764 * 1765 * This routine is invoked by the worker thread to process a SLI4 fast-path 1766 * NVMET aborted xri. 1767 **/ 1768 void 1769 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba, 1770 struct sli4_wcqe_xri_aborted *axri) 1771 { 1772 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1773 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 1774 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 1775 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp; 1776 struct lpfc_nvmet_tgtport *tgtp; 1777 struct nvmefc_tgt_fcp_req *req = NULL; 1778 struct lpfc_nodelist *ndlp; 1779 unsigned long iflag = 0; 1780 int rrq_empty = 0; 1781 bool released = false; 1782 1783 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1784 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid); 1785 1786 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 1787 return; 1788 1789 if (phba->targetport) { 1790 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1791 atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe); 1792 } 1793 1794 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); 1795 list_for_each_entry_safe(ctxp, next_ctxp, 1796 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1797 list) { 1798 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 1799 continue; 1800 1801 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, 1802 iflag); 1803 1804 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1805 /* Check if we already received a free context call 1806 * and we have completed processing an abort situation. 1807 */ 1808 if (ctxp->flag & LPFC_NVME_CTX_RLS && 1809 !(ctxp->flag & LPFC_NVME_ABORT_OP)) { 1810 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1811 list_del_init(&ctxp->list); 1812 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1813 released = true; 1814 } 1815 ctxp->flag &= ~LPFC_NVME_XBUSY; 1816 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1817 1818 spin_lock_irqsave(&phba->rrq_list_lock, iflag); 1819 rrq_empty = list_empty(&phba->active_rrq_list); 1820 spin_unlock_irqrestore(&phba->rrq_list_lock, iflag); 1821 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 1822 if (ndlp && 1823 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 1824 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 1825 lpfc_set_rrq_active(phba, ndlp, 1826 ctxp->ctxbuf->sglq->sli4_lxritag, 1827 rxid, 1); 1828 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 1829 } 1830 1831 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1832 "6318 XB aborted oxid x%x flg x%x (%x)\n", 1833 ctxp->oxid, ctxp->flag, released); 1834 if (released) 1835 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1836 1837 if (rrq_empty) 1838 lpfc_worker_wake_up(phba); 1839 return; 1840 } 1841 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); 1842 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri); 1843 if (ctxp) { 1844 /* 1845 * Abort already done by FW, so BA_ACC sent. 1846 * However, the transport may be unaware. 1847 */ 1848 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1849 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x " 1850 "flag x%x oxid x%x rxid x%x\n", 1851 xri, ctxp->state, ctxp->flag, ctxp->oxid, 1852 rxid); 1853 1854 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1855 ctxp->flag |= LPFC_NVME_ABTS_RCV; 1856 ctxp->state = LPFC_NVME_STE_ABORT; 1857 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1858 1859 lpfc_nvmeio_data(phba, 1860 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1861 xri, raw_smp_processor_id(), 0); 1862 1863 req = &ctxp->hdlrctx.fcp_req; 1864 if (req) 1865 nvmet_fc_rcv_fcp_abort(phba->targetport, req); 1866 } 1867 #endif 1868 } 1869 1870 int 1871 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport, 1872 struct fc_frame_header *fc_hdr) 1873 { 1874 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1875 struct lpfc_hba *phba = vport->phba; 1876 struct lpfc_async_xchg_ctx *ctxp, *next_ctxp; 1877 struct nvmefc_tgt_fcp_req *rsp; 1878 uint32_t sid; 1879 uint16_t oxid, xri; 1880 unsigned long iflag = 0; 1881 1882 sid = sli4_sid_from_fc_hdr(fc_hdr); 1883 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1884 1885 spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); 1886 list_for_each_entry_safe(ctxp, next_ctxp, 1887 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1888 list) { 1889 if (ctxp->oxid != oxid || ctxp->sid != sid) 1890 continue; 1891 1892 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1893 1894 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, 1895 iflag); 1896 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1897 ctxp->flag |= LPFC_NVME_ABTS_RCV; 1898 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1899 1900 lpfc_nvmeio_data(phba, 1901 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1902 xri, raw_smp_processor_id(), 0); 1903 1904 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1905 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri); 1906 1907 rsp = &ctxp->hdlrctx.fcp_req; 1908 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp); 1909 1910 /* Respond with BA_ACC accordingly */ 1911 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1912 return 0; 1913 } 1914 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); 1915 /* check the wait list */ 1916 if (phba->sli4_hba.nvmet_io_wait_cnt) { 1917 struct rqb_dmabuf *nvmebuf; 1918 struct fc_frame_header *fc_hdr_tmp; 1919 u32 sid_tmp; 1920 u16 oxid_tmp; 1921 bool found = false; 1922 1923 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 1924 1925 /* match by oxid and s_id */ 1926 list_for_each_entry(nvmebuf, 1927 &phba->sli4_hba.lpfc_nvmet_io_wait_list, 1928 hbuf.list) { 1929 fc_hdr_tmp = (struct fc_frame_header *) 1930 (nvmebuf->hbuf.virt); 1931 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id); 1932 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp); 1933 if (oxid_tmp != oxid || sid_tmp != sid) 1934 continue; 1935 1936 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1937 "6321 NVMET Rcv ABTS oxid x%x from x%x " 1938 "is waiting for a ctxp\n", 1939 oxid, sid); 1940 1941 list_del_init(&nvmebuf->hbuf.list); 1942 phba->sli4_hba.nvmet_io_wait_cnt--; 1943 found = true; 1944 break; 1945 } 1946 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 1947 iflag); 1948 1949 /* free buffer since already posted a new DMA buffer to RQ */ 1950 if (found) { 1951 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1952 /* Respond with BA_ACC accordingly */ 1953 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1954 return 0; 1955 } 1956 } 1957 1958 /* check active list */ 1959 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid); 1960 if (ctxp) { 1961 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1962 1963 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1964 ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP); 1965 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1966 1967 lpfc_nvmeio_data(phba, 1968 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1969 xri, raw_smp_processor_id(), 0); 1970 1971 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1972 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x " 1973 "flag x%x state x%x\n", 1974 ctxp->oxid, xri, ctxp->flag, ctxp->state); 1975 1976 if (ctxp->flag & LPFC_NVME_TNOTIFY) { 1977 /* Notify the transport */ 1978 nvmet_fc_rcv_fcp_abort(phba->targetport, 1979 &ctxp->hdlrctx.fcp_req); 1980 } else { 1981 cancel_work_sync(&ctxp->ctxbuf->defer_work); 1982 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1983 lpfc_nvmet_defer_release(phba, ctxp); 1984 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1985 } 1986 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1987 ctxp->oxid); 1988 1989 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1990 return 0; 1991 } 1992 1993 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n", 1994 oxid, raw_smp_processor_id(), 1); 1995 1996 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1997 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid); 1998 1999 /* Respond with BA_RJT accordingly */ 2000 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0); 2001 #endif 2002 return 0; 2003 } 2004 2005 static void 2006 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq, 2007 struct lpfc_async_xchg_ctx *ctxp) 2008 { 2009 struct lpfc_sli_ring *pring; 2010 struct lpfc_iocbq *nvmewqeq; 2011 struct lpfc_iocbq *next_nvmewqeq; 2012 unsigned long iflags; 2013 struct lpfc_wcqe_complete wcqe; 2014 struct lpfc_wcqe_complete *wcqep; 2015 2016 pring = wq->pring; 2017 wcqep = &wcqe; 2018 2019 /* Fake an ABORT error code back to cmpl routine */ 2020 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete)); 2021 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT); 2022 wcqep->parameter = IOERR_ABORT_REQUESTED; 2023 2024 spin_lock_irqsave(&pring->ring_lock, iflags); 2025 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq, 2026 &wq->wqfull_list, list) { 2027 if (ctxp) { 2028 /* Checking for a specific IO to flush */ 2029 if (nvmewqeq->context_un.axchg == ctxp) { 2030 list_del(&nvmewqeq->list); 2031 spin_unlock_irqrestore(&pring->ring_lock, 2032 iflags); 2033 memcpy(&nvmewqeq->wcqe_cmpl, wcqep, 2034 sizeof(*wcqep)); 2035 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, 2036 nvmewqeq); 2037 return; 2038 } 2039 continue; 2040 } else { 2041 /* Flush all IOs */ 2042 list_del(&nvmewqeq->list); 2043 spin_unlock_irqrestore(&pring->ring_lock, iflags); 2044 memcpy(&nvmewqeq->wcqe_cmpl, wcqep, sizeof(*wcqep)); 2045 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, nvmewqeq); 2046 spin_lock_irqsave(&pring->ring_lock, iflags); 2047 } 2048 } 2049 if (!ctxp) 2050 wq->q_flag &= ~HBA_NVMET_WQFULL; 2051 spin_unlock_irqrestore(&pring->ring_lock, iflags); 2052 } 2053 2054 void 2055 lpfc_nvmet_wqfull_process(struct lpfc_hba *phba, 2056 struct lpfc_queue *wq) 2057 { 2058 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2059 struct lpfc_sli_ring *pring; 2060 struct lpfc_iocbq *nvmewqeq; 2061 struct lpfc_async_xchg_ctx *ctxp; 2062 unsigned long iflags; 2063 int rc; 2064 2065 /* 2066 * Some WQE slots are available, so try to re-issue anything 2067 * on the WQ wqfull_list. 2068 */ 2069 pring = wq->pring; 2070 spin_lock_irqsave(&pring->ring_lock, iflags); 2071 while (!list_empty(&wq->wqfull_list)) { 2072 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq, 2073 list); 2074 spin_unlock_irqrestore(&pring->ring_lock, iflags); 2075 ctxp = nvmewqeq->context_un.axchg; 2076 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 2077 spin_lock_irqsave(&pring->ring_lock, iflags); 2078 if (rc == -EBUSY) { 2079 /* WQ was full again, so put it back on the list */ 2080 list_add(&nvmewqeq->list, &wq->wqfull_list); 2081 spin_unlock_irqrestore(&pring->ring_lock, iflags); 2082 return; 2083 } 2084 if (rc == WQE_SUCCESS) { 2085 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2086 if (ctxp->ts_cmd_nvme) { 2087 if (ctxp->hdlrctx.fcp_req.op == NVMET_FCOP_RSP) 2088 ctxp->ts_status_wqput = ktime_get_ns(); 2089 else 2090 ctxp->ts_data_wqput = ktime_get_ns(); 2091 } 2092 #endif 2093 } else { 2094 WARN_ON(rc); 2095 } 2096 } 2097 wq->q_flag &= ~HBA_NVMET_WQFULL; 2098 spin_unlock_irqrestore(&pring->ring_lock, iflags); 2099 2100 #endif 2101 } 2102 2103 void 2104 lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) 2105 { 2106 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2107 struct lpfc_nvmet_tgtport *tgtp; 2108 struct lpfc_queue *wq; 2109 uint32_t qidx; 2110 DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp); 2111 2112 if (phba->nvmet_support == 0) 2113 return; 2114 if (phba->targetport) { 2115 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2116 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) { 2117 wq = phba->sli4_hba.hdwq[qidx].io_wq; 2118 lpfc_nvmet_wqfull_flush(phba, wq, NULL); 2119 } 2120 tgtp->tport_unreg_cmp = &tport_unreg_cmp; 2121 nvmet_fc_unregister_targetport(phba->targetport); 2122 if (!wait_for_completion_timeout(&tport_unreg_cmp, 2123 msecs_to_jiffies(LPFC_NVMET_WAIT_TMO))) 2124 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2125 "6179 Unreg targetport x%px timeout " 2126 "reached.\n", phba->targetport); 2127 lpfc_nvmet_cleanup_io_context(phba); 2128 } 2129 phba->targetport = NULL; 2130 #endif 2131 } 2132 2133 /** 2134 * lpfc_nvmet_handle_lsreq - Process an NVME LS request 2135 * @phba: pointer to lpfc hba data structure. 2136 * @axchg: pointer to exchange context for the NVME LS request 2137 * 2138 * This routine is used for processing an asynchronously received NVME LS 2139 * request. Any remaining validation is done and the LS is then forwarded 2140 * to the nvmet-fc transport via nvmet_fc_rcv_ls_req(). 2141 * 2142 * The calling sequence should be: nvmet_fc_rcv_ls_req() -> (processing) 2143 * -> lpfc_nvmet_xmt_ls_rsp/cmp -> req->done. 2144 * lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg. 2145 * 2146 * Returns 0 if LS was handled and delivered to the transport 2147 * Returns 1 if LS failed to be handled and should be dropped 2148 */ 2149 int 2150 lpfc_nvmet_handle_lsreq(struct lpfc_hba *phba, 2151 struct lpfc_async_xchg_ctx *axchg) 2152 { 2153 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2154 struct lpfc_nvmet_tgtport *tgtp = phba->targetport->private; 2155 uint32_t *payload = axchg->payload; 2156 int rc; 2157 2158 atomic_inc(&tgtp->rcv_ls_req_in); 2159 2160 /* 2161 * Driver passes the ndlp as the hosthandle argument allowing 2162 * the transport to generate LS requests for any associateions 2163 * that are created. 2164 */ 2165 rc = nvmet_fc_rcv_ls_req(phba->targetport, axchg->ndlp, &axchg->ls_rsp, 2166 axchg->payload, axchg->size); 2167 2168 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2169 "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x " 2170 "%08x %08x %08x\n", axchg->size, rc, 2171 *payload, *(payload+1), *(payload+2), 2172 *(payload+3), *(payload+4), *(payload+5)); 2173 2174 if (!rc) { 2175 atomic_inc(&tgtp->rcv_ls_req_out); 2176 return 0; 2177 } 2178 2179 atomic_inc(&tgtp->rcv_ls_req_drop); 2180 #endif 2181 return 1; 2182 } 2183 2184 static void 2185 lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf) 2186 { 2187 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2188 struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context; 2189 struct lpfc_hba *phba = ctxp->phba; 2190 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 2191 struct lpfc_nvmet_tgtport *tgtp; 2192 uint32_t *payload, qno; 2193 uint32_t rc; 2194 unsigned long iflags; 2195 2196 if (!nvmebuf) { 2197 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2198 "6159 process_rcv_fcp_req, nvmebuf is NULL, " 2199 "oxid: x%x flg: x%x state: x%x\n", 2200 ctxp->oxid, ctxp->flag, ctxp->state); 2201 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2202 lpfc_nvmet_defer_release(phba, ctxp); 2203 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2204 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 2205 ctxp->oxid); 2206 return; 2207 } 2208 2209 if (ctxp->flag & LPFC_NVME_ABTS_RCV) { 2210 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2211 "6324 IO oxid x%x aborted\n", 2212 ctxp->oxid); 2213 return; 2214 } 2215 2216 payload = (uint32_t *)(nvmebuf->dbuf.virt); 2217 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2218 ctxp->flag |= LPFC_NVME_TNOTIFY; 2219 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2220 if (ctxp->ts_isr_cmd) 2221 ctxp->ts_cmd_nvme = ktime_get_ns(); 2222 #endif 2223 /* 2224 * The calling sequence should be: 2225 * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done 2226 * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. 2227 * When we return from nvmet_fc_rcv_fcp_req, all relevant info 2228 * the NVME command / FC header is stored. 2229 * A buffer has already been reposted for this IO, so just free 2230 * the nvmebuf. 2231 */ 2232 rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->hdlrctx.fcp_req, 2233 payload, ctxp->size); 2234 /* Process FCP command */ 2235 if (rc == 0) { 2236 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2237 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2238 if ((ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) || 2239 (nvmebuf != ctxp->rqb_buffer)) { 2240 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2241 return; 2242 } 2243 ctxp->rqb_buffer = NULL; 2244 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2245 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */ 2246 return; 2247 } 2248 2249 /* Processing of FCP command is deferred */ 2250 if (rc == -EOVERFLOW) { 2251 lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d " 2252 "from %06x\n", 2253 ctxp->oxid, ctxp->size, ctxp->sid); 2254 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2255 atomic_inc(&tgtp->defer_fod); 2256 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2257 if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) { 2258 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2259 return; 2260 } 2261 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2262 /* 2263 * Post a replacement DMA buffer to RQ and defer 2264 * freeing rcv buffer till .defer_rcv callback 2265 */ 2266 qno = nvmebuf->idx; 2267 lpfc_post_rq_buffer( 2268 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2269 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2270 return; 2271 } 2272 ctxp->flag &= ~LPFC_NVME_TNOTIFY; 2273 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2274 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2275 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n", 2276 ctxp->oxid, rc, 2277 atomic_read(&tgtp->rcv_fcp_cmd_in), 2278 atomic_read(&tgtp->rcv_fcp_cmd_out), 2279 atomic_read(&tgtp->xmt_fcp_release)); 2280 lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n", 2281 ctxp->oxid, ctxp->size, ctxp->sid); 2282 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2283 lpfc_nvmet_defer_release(phba, ctxp); 2284 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2285 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 2286 #endif 2287 } 2288 2289 static void 2290 lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work) 2291 { 2292 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2293 struct lpfc_nvmet_ctxbuf *ctx_buf = 2294 container_of(work, struct lpfc_nvmet_ctxbuf, defer_work); 2295 2296 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2297 #endif 2298 } 2299 2300 static struct lpfc_nvmet_ctxbuf * 2301 lpfc_nvmet_replenish_context(struct lpfc_hba *phba, 2302 struct lpfc_nvmet_ctx_info *current_infop) 2303 { 2304 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2305 struct lpfc_nvmet_ctxbuf *ctx_buf = NULL; 2306 struct lpfc_nvmet_ctx_info *get_infop; 2307 int i; 2308 2309 /* 2310 * The current_infop for the MRQ a NVME command IU was received 2311 * on is empty. Our goal is to replenish this MRQs context 2312 * list from a another CPUs. 2313 * 2314 * First we need to pick a context list to start looking on. 2315 * nvmet_ctx_start_cpu has available context the last time 2316 * we needed to replenish this CPU where nvmet_ctx_next_cpu 2317 * is just the next sequential CPU for this MRQ. 2318 */ 2319 if (current_infop->nvmet_ctx_start_cpu) 2320 get_infop = current_infop->nvmet_ctx_start_cpu; 2321 else 2322 get_infop = current_infop->nvmet_ctx_next_cpu; 2323 2324 for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) { 2325 if (get_infop == current_infop) { 2326 get_infop = get_infop->nvmet_ctx_next_cpu; 2327 continue; 2328 } 2329 spin_lock(&get_infop->nvmet_ctx_list_lock); 2330 2331 /* Just take the entire context list, if there are any */ 2332 if (get_infop->nvmet_ctx_list_cnt) { 2333 list_splice_init(&get_infop->nvmet_ctx_list, 2334 ¤t_infop->nvmet_ctx_list); 2335 current_infop->nvmet_ctx_list_cnt = 2336 get_infop->nvmet_ctx_list_cnt - 1; 2337 get_infop->nvmet_ctx_list_cnt = 0; 2338 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2339 2340 current_infop->nvmet_ctx_start_cpu = get_infop; 2341 list_remove_head(¤t_infop->nvmet_ctx_list, 2342 ctx_buf, struct lpfc_nvmet_ctxbuf, 2343 list); 2344 return ctx_buf; 2345 } 2346 2347 /* Otherwise, move on to the next CPU for this MRQ */ 2348 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2349 get_infop = get_infop->nvmet_ctx_next_cpu; 2350 } 2351 2352 #endif 2353 /* Nothing found, all contexts for the MRQ are in-flight */ 2354 return NULL; 2355 } 2356 2357 /** 2358 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer 2359 * @phba: pointer to lpfc hba data structure. 2360 * @idx: relative index of MRQ vector 2361 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 2362 * @isr_timestamp: in jiffies. 2363 * @cqflag: cq processing information regarding workload. 2364 * 2365 * This routine is used for processing the WQE associated with a unsolicited 2366 * event. It first determines whether there is an existing ndlp that matches 2367 * the DID from the unsolicited WQE. If not, it will create a new one with 2368 * the DID from the unsolicited WQE. The ELS command from the unsolicited 2369 * WQE is then used to invoke the proper routine and to set up proper state 2370 * of the discovery state machine. 2371 **/ 2372 static void 2373 lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, 2374 uint32_t idx, 2375 struct rqb_dmabuf *nvmebuf, 2376 uint64_t isr_timestamp, 2377 uint8_t cqflag) 2378 { 2379 struct lpfc_async_xchg_ctx *ctxp; 2380 struct lpfc_nvmet_tgtport *tgtp; 2381 struct fc_frame_header *fc_hdr; 2382 struct lpfc_nvmet_ctxbuf *ctx_buf; 2383 struct lpfc_nvmet_ctx_info *current_infop; 2384 uint32_t size, oxid, sid, qno; 2385 unsigned long iflag; 2386 int current_cpu; 2387 2388 if (!IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2389 return; 2390 2391 ctx_buf = NULL; 2392 if (!nvmebuf || !phba->targetport) { 2393 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2394 "6157 NVMET FCP Drop IO\n"); 2395 if (nvmebuf) 2396 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2397 return; 2398 } 2399 2400 /* 2401 * Get a pointer to the context list for this MRQ based on 2402 * the CPU this MRQ IRQ is associated with. If the CPU association 2403 * changes from our initial assumption, the context list could 2404 * be empty, thus it would need to be replenished with the 2405 * context list from another CPU for this MRQ. 2406 */ 2407 current_cpu = raw_smp_processor_id(); 2408 current_infop = lpfc_get_ctx_list(phba, current_cpu, idx); 2409 spin_lock_irqsave(¤t_infop->nvmet_ctx_list_lock, iflag); 2410 if (current_infop->nvmet_ctx_list_cnt) { 2411 list_remove_head(¤t_infop->nvmet_ctx_list, 2412 ctx_buf, struct lpfc_nvmet_ctxbuf, list); 2413 current_infop->nvmet_ctx_list_cnt--; 2414 } else { 2415 ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop); 2416 } 2417 spin_unlock_irqrestore(¤t_infop->nvmet_ctx_list_lock, iflag); 2418 2419 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 2420 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 2421 size = nvmebuf->bytes_recv; 2422 2423 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2424 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 2425 this_cpu_inc(phba->sli4_hba.c_stat->rcv_io); 2426 if (idx != current_cpu) 2427 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2428 "6703 CPU Check rcv: " 2429 "cpu %d expect %d\n", 2430 current_cpu, idx); 2431 } 2432 #endif 2433 2434 lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n", 2435 oxid, size, raw_smp_processor_id()); 2436 2437 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2438 2439 if (!ctx_buf) { 2440 /* Queue this NVME IO to process later */ 2441 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 2442 list_add_tail(&nvmebuf->hbuf.list, 2443 &phba->sli4_hba.lpfc_nvmet_io_wait_list); 2444 phba->sli4_hba.nvmet_io_wait_cnt++; 2445 phba->sli4_hba.nvmet_io_wait_total++; 2446 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 2447 iflag); 2448 2449 /* Post a brand new DMA buffer to RQ */ 2450 qno = nvmebuf->idx; 2451 lpfc_post_rq_buffer( 2452 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2453 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2454 2455 atomic_inc(&tgtp->defer_ctx); 2456 return; 2457 } 2458 2459 sid = sli4_sid_from_fc_hdr(fc_hdr); 2460 2461 ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context; 2462 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 2463 list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list); 2464 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 2465 if (ctxp->state != LPFC_NVME_STE_FREE) { 2466 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2467 "6414 NVMET Context corrupt %d %d oxid x%x\n", 2468 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 2469 } 2470 ctxp->wqeq = NULL; 2471 ctxp->offset = 0; 2472 ctxp->phba = phba; 2473 ctxp->size = size; 2474 ctxp->oxid = oxid; 2475 ctxp->sid = sid; 2476 ctxp->idx = idx; 2477 ctxp->state = LPFC_NVME_STE_RCV; 2478 ctxp->entry_cnt = 1; 2479 ctxp->flag = 0; 2480 ctxp->ctxbuf = ctx_buf; 2481 ctxp->rqb_buffer = (void *)nvmebuf; 2482 ctxp->hdwq = NULL; 2483 spin_lock_init(&ctxp->ctxlock); 2484 2485 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2486 if (isr_timestamp) 2487 ctxp->ts_isr_cmd = isr_timestamp; 2488 ctxp->ts_cmd_nvme = 0; 2489 ctxp->ts_nvme_data = 0; 2490 ctxp->ts_data_wqput = 0; 2491 ctxp->ts_isr_data = 0; 2492 ctxp->ts_data_nvme = 0; 2493 ctxp->ts_nvme_status = 0; 2494 ctxp->ts_status_wqput = 0; 2495 ctxp->ts_isr_status = 0; 2496 ctxp->ts_status_nvme = 0; 2497 #endif 2498 2499 atomic_inc(&tgtp->rcv_fcp_cmd_in); 2500 /* check for cq processing load */ 2501 if (!cqflag) { 2502 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2503 return; 2504 } 2505 2506 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 2507 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2508 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2509 "6325 Unable to queue work for oxid x%x. " 2510 "FCP Drop IO [x%x x%x x%x]\n", 2511 ctxp->oxid, 2512 atomic_read(&tgtp->rcv_fcp_cmd_in), 2513 atomic_read(&tgtp->rcv_fcp_cmd_out), 2514 atomic_read(&tgtp->xmt_fcp_release)); 2515 2516 spin_lock_irqsave(&ctxp->ctxlock, iflag); 2517 lpfc_nvmet_defer_release(phba, ctxp); 2518 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 2519 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 2520 } 2521 } 2522 2523 /** 2524 * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport 2525 * @phba: pointer to lpfc hba data structure. 2526 * @idx: relative index of MRQ vector 2527 * @nvmebuf: pointer to received nvme data structure. 2528 * @isr_timestamp: in jiffies. 2529 * @cqflag: cq processing information regarding workload. 2530 * 2531 * This routine is used to process an unsolicited event received from a SLI 2532 * (Service Level Interface) ring. The actual processing of the data buffer 2533 * associated with the unsolicited event is done by invoking the routine 2534 * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the 2535 * SLI RQ on which the unsolicited event was received. 2536 **/ 2537 void 2538 lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, 2539 uint32_t idx, 2540 struct rqb_dmabuf *nvmebuf, 2541 uint64_t isr_timestamp, 2542 uint8_t cqflag) 2543 { 2544 if (!nvmebuf) { 2545 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2546 "3167 NVMET FCP Drop IO\n"); 2547 return; 2548 } 2549 if (phba->nvmet_support == 0) { 2550 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2551 return; 2552 } 2553 lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag); 2554 } 2555 2556 /** 2557 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure 2558 * @phba: pointer to a host N_Port data structure. 2559 * @ctxp: Context info for NVME LS Request 2560 * @rspbuf: DMA buffer of NVME command. 2561 * @rspsize: size of the NVME command. 2562 * 2563 * This routine is used for allocating a lpfc-WQE data structure from 2564 * the driver lpfc-WQE free-list and prepare the WQE with the parameters 2565 * passed into the routine for discovery state machine to issue an Extended 2566 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation 2567 * and preparation routine that is used by all the discovery state machine 2568 * routines and the NVME command-specific fields will be later set up by 2569 * the individual discovery machine routines after calling this routine 2570 * allocating and preparing a generic WQE data structure. It fills in the 2571 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 2572 * payload and response payload (if expected). The reference count on the 2573 * ndlp is incremented by 1 and the reference to the ndlp is put into 2574 * context1 of the WQE data structure for this WQE to hold the ndlp 2575 * reference for the command's callback function to access later. 2576 * 2577 * Return code 2578 * Pointer to the newly allocated/prepared nvme wqe data structure 2579 * NULL - when nvme wqe data structure allocation/preparation failed 2580 **/ 2581 static struct lpfc_iocbq * 2582 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, 2583 struct lpfc_async_xchg_ctx *ctxp, 2584 dma_addr_t rspbuf, uint16_t rspsize) 2585 { 2586 struct lpfc_nodelist *ndlp; 2587 struct lpfc_iocbq *nvmewqe; 2588 union lpfc_wqe128 *wqe; 2589 2590 if (!lpfc_is_link_up(phba)) { 2591 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2592 "6104 NVMET prep LS wqe: link err: " 2593 "NPORT x%x oxid:x%x ste %d\n", 2594 ctxp->sid, ctxp->oxid, ctxp->state); 2595 return NULL; 2596 } 2597 2598 /* Allocate buffer for command wqe */ 2599 nvmewqe = lpfc_sli_get_iocbq(phba); 2600 if (nvmewqe == NULL) { 2601 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2602 "6105 NVMET prep LS wqe: No WQE: " 2603 "NPORT x%x oxid x%x ste %d\n", 2604 ctxp->sid, ctxp->oxid, ctxp->state); 2605 return NULL; 2606 } 2607 2608 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2609 if (!ndlp || 2610 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2611 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2612 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2613 "6106 NVMET prep LS wqe: No ndlp: " 2614 "NPORT x%x oxid x%x ste %d\n", 2615 ctxp->sid, ctxp->oxid, ctxp->state); 2616 goto nvme_wqe_free_wqeq_exit; 2617 } 2618 ctxp->wqeq = nvmewqe; 2619 2620 /* prevent preparing wqe with NULL ndlp reference */ 2621 nvmewqe->ndlp = lpfc_nlp_get(ndlp); 2622 if (!nvmewqe->ndlp) 2623 goto nvme_wqe_free_wqeq_exit; 2624 nvmewqe->context_un.axchg = ctxp; 2625 2626 wqe = &nvmewqe->wqe; 2627 memset(wqe, 0, sizeof(union lpfc_wqe)); 2628 2629 /* Words 0 - 2 */ 2630 wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2631 wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; 2632 wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); 2633 wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); 2634 2635 /* Word 3 */ 2636 2637 /* Word 4 */ 2638 2639 /* Word 5 */ 2640 bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); 2641 bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); 2642 bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); 2643 bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP); 2644 bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); 2645 2646 /* Word 6 */ 2647 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, 2648 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2649 bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); 2650 2651 /* Word 7 */ 2652 bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, 2653 CMD_XMIT_SEQUENCE64_WQE); 2654 bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); 2655 bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); 2656 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); 2657 2658 /* Word 8 */ 2659 wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; 2660 2661 /* Word 9 */ 2662 bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); 2663 /* Needs to be set by caller */ 2664 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); 2665 2666 /* Word 10 */ 2667 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); 2668 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 2669 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, 2670 LPFC_WQE_LENLOC_WORD12); 2671 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); 2672 2673 /* Word 11 */ 2674 bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, 2675 LPFC_WQE_CQ_ID_DEFAULT); 2676 bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, 2677 OTHER_COMMAND); 2678 2679 /* Word 12 */ 2680 wqe->xmit_sequence.xmit_len = rspsize; 2681 2682 nvmewqe->retry = 1; 2683 nvmewqe->vport = phba->pport; 2684 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2685 nvmewqe->cmd_flag |= LPFC_IO_NVME_LS; 2686 2687 /* Xmit NVMET response to remote NPORT <did> */ 2688 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2689 "6039 Xmit NVMET LS response to remote " 2690 "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", 2691 ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, 2692 rspsize); 2693 return nvmewqe; 2694 2695 nvme_wqe_free_wqeq_exit: 2696 nvmewqe->context_un.axchg = NULL; 2697 nvmewqe->ndlp = NULL; 2698 nvmewqe->bpl_dmabuf = NULL; 2699 lpfc_sli_release_iocbq(phba, nvmewqe); 2700 return NULL; 2701 } 2702 2703 2704 static struct lpfc_iocbq * 2705 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, 2706 struct lpfc_async_xchg_ctx *ctxp) 2707 { 2708 struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.fcp_req; 2709 struct lpfc_nvmet_tgtport *tgtp; 2710 struct sli4_sge *sgl; 2711 struct lpfc_nodelist *ndlp; 2712 struct lpfc_iocbq *nvmewqe; 2713 struct scatterlist *sgel; 2714 union lpfc_wqe128 *wqe; 2715 struct ulp_bde64 *bde; 2716 dma_addr_t physaddr; 2717 int i, cnt, nsegs; 2718 int xc = 1; 2719 2720 if (!lpfc_is_link_up(phba)) { 2721 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2722 "6107 NVMET prep FCP wqe: link err:" 2723 "NPORT x%x oxid x%x ste %d\n", 2724 ctxp->sid, ctxp->oxid, ctxp->state); 2725 return NULL; 2726 } 2727 2728 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2729 if (!ndlp || 2730 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2731 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2732 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2733 "6108 NVMET prep FCP wqe: no ndlp: " 2734 "NPORT x%x oxid x%x ste %d\n", 2735 ctxp->sid, ctxp->oxid, ctxp->state); 2736 return NULL; 2737 } 2738 2739 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) { 2740 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2741 "6109 NVMET prep FCP wqe: seg cnt err: " 2742 "NPORT x%x oxid x%x ste %d cnt %d\n", 2743 ctxp->sid, ctxp->oxid, ctxp->state, 2744 phba->cfg_nvme_seg_cnt); 2745 return NULL; 2746 } 2747 nsegs = rsp->sg_cnt; 2748 2749 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2750 nvmewqe = ctxp->wqeq; 2751 if (nvmewqe == NULL) { 2752 /* Allocate buffer for command wqe */ 2753 nvmewqe = ctxp->ctxbuf->iocbq; 2754 if (nvmewqe == NULL) { 2755 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2756 "6110 NVMET prep FCP wqe: No " 2757 "WQE: NPORT x%x oxid x%x ste %d\n", 2758 ctxp->sid, ctxp->oxid, ctxp->state); 2759 return NULL; 2760 } 2761 ctxp->wqeq = nvmewqe; 2762 xc = 0; /* create new XRI */ 2763 nvmewqe->sli4_lxritag = NO_XRI; 2764 nvmewqe->sli4_xritag = NO_XRI; 2765 } 2766 2767 /* Sanity check */ 2768 if (((ctxp->state == LPFC_NVME_STE_RCV) && 2769 (ctxp->entry_cnt == 1)) || 2770 (ctxp->state == LPFC_NVME_STE_DATA)) { 2771 wqe = &nvmewqe->wqe; 2772 } else { 2773 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2774 "6111 Wrong state NVMET FCP: %d cnt %d\n", 2775 ctxp->state, ctxp->entry_cnt); 2776 return NULL; 2777 } 2778 2779 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl; 2780 switch (rsp->op) { 2781 case NVMET_FCOP_READDATA: 2782 case NVMET_FCOP_READDATA_RSP: 2783 /* From the tsend template, initialize words 7 - 11 */ 2784 memcpy(&wqe->words[7], 2785 &lpfc_tsend_cmd_template.words[7], 2786 sizeof(uint32_t) * 5); 2787 2788 /* Words 0 - 2 : The first sg segment */ 2789 sgel = &rsp->sg[0]; 2790 physaddr = sg_dma_address(sgel); 2791 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2792 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); 2793 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); 2794 wqe->fcp_tsend.bde.addrHigh = 2795 cpu_to_le32(putPaddrHigh(physaddr)); 2796 2797 /* Word 3 */ 2798 wqe->fcp_tsend.payload_offset_len = 0; 2799 2800 /* Word 4 */ 2801 wqe->fcp_tsend.relative_offset = ctxp->offset; 2802 2803 /* Word 5 */ 2804 wqe->fcp_tsend.reserved = 0; 2805 2806 /* Word 6 */ 2807 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, 2808 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2809 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, 2810 nvmewqe->sli4_xritag); 2811 2812 /* Word 7 - set ar later */ 2813 2814 /* Word 8 */ 2815 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; 2816 2817 /* Word 9 */ 2818 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); 2819 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); 2820 2821 /* Word 10 - set wqes later, in template xc=1 */ 2822 if (!xc) 2823 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0); 2824 2825 /* Word 12 */ 2826 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2827 2828 /* Setup 2 SKIP SGEs */ 2829 sgl->addr_hi = 0; 2830 sgl->addr_lo = 0; 2831 sgl->word2 = 0; 2832 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2833 sgl->word2 = cpu_to_le32(sgl->word2); 2834 sgl->sge_len = 0; 2835 sgl++; 2836 sgl->addr_hi = 0; 2837 sgl->addr_lo = 0; 2838 sgl->word2 = 0; 2839 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2840 sgl->word2 = cpu_to_le32(sgl->word2); 2841 sgl->sge_len = 0; 2842 sgl++; 2843 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 2844 atomic_inc(&tgtp->xmt_fcp_read_rsp); 2845 2846 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2847 2848 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { 2849 if (test_bit(NLP_SUPPRESS_RSP, &ndlp->nlp_flag)) 2850 bf_set(wqe_sup, 2851 &wqe->fcp_tsend.wqe_com, 1); 2852 } else { 2853 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); 2854 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); 2855 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 2856 ((rsp->rsplen >> 2) - 1)); 2857 memcpy(&wqe->words[16], rsp->rspaddr, 2858 rsp->rsplen); 2859 } 2860 } else { 2861 atomic_inc(&tgtp->xmt_fcp_read); 2862 2863 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2864 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); 2865 } 2866 break; 2867 2868 case NVMET_FCOP_WRITEDATA: 2869 /* From the treceive template, initialize words 3 - 11 */ 2870 memcpy(&wqe->words[3], 2871 &lpfc_treceive_cmd_template.words[3], 2872 sizeof(uint32_t) * 9); 2873 2874 /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */ 2875 wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP; 2876 wqe->fcp_treceive.bde.tus.f.bdeSize = 0; 2877 wqe->fcp_treceive.bde.addrLow = 0; 2878 wqe->fcp_treceive.bde.addrHigh = 0; 2879 2880 /* Word 4 */ 2881 wqe->fcp_treceive.relative_offset = ctxp->offset; 2882 2883 /* Word 6 */ 2884 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, 2885 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2886 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, 2887 nvmewqe->sli4_xritag); 2888 2889 /* Word 7 */ 2890 2891 /* Word 8 */ 2892 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; 2893 2894 /* Word 9 */ 2895 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); 2896 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); 2897 2898 /* Word 10 - in template xc=1 */ 2899 if (!xc) 2900 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0); 2901 2902 /* Word 12 */ 2903 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2904 2905 /* Setup 2 SKIP SGEs */ 2906 sgl->addr_hi = 0; 2907 sgl->addr_lo = 0; 2908 sgl->word2 = 0; 2909 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2910 sgl->word2 = cpu_to_le32(sgl->word2); 2911 sgl->sge_len = 0; 2912 sgl++; 2913 sgl->addr_hi = 0; 2914 sgl->addr_lo = 0; 2915 sgl->word2 = 0; 2916 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2917 sgl->word2 = cpu_to_le32(sgl->word2); 2918 sgl->sge_len = 0; 2919 sgl++; 2920 atomic_inc(&tgtp->xmt_fcp_write); 2921 break; 2922 2923 case NVMET_FCOP_RSP: 2924 /* From the treceive template, initialize words 4 - 11 */ 2925 memcpy(&wqe->words[4], 2926 &lpfc_trsp_cmd_template.words[4], 2927 sizeof(uint32_t) * 8); 2928 2929 /* Words 0 - 2 */ 2930 physaddr = rsp->rspdma; 2931 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2932 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; 2933 wqe->fcp_trsp.bde.addrLow = 2934 cpu_to_le32(putPaddrLow(physaddr)); 2935 wqe->fcp_trsp.bde.addrHigh = 2936 cpu_to_le32(putPaddrHigh(physaddr)); 2937 2938 /* Word 3 */ 2939 wqe->fcp_trsp.response_len = rsp->rsplen; 2940 2941 /* Word 6 */ 2942 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, 2943 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2944 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, 2945 nvmewqe->sli4_xritag); 2946 2947 /* Word 7 */ 2948 2949 /* Word 8 */ 2950 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; 2951 2952 /* Word 9 */ 2953 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); 2954 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); 2955 2956 /* Word 10 */ 2957 if (xc) 2958 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1); 2959 2960 /* Word 11 */ 2961 /* In template wqes=0 irsp=0 irsplen=0 - good response */ 2962 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) { 2963 /* Bad response - embed it */ 2964 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); 2965 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); 2966 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 2967 ((rsp->rsplen >> 2) - 1)); 2968 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); 2969 } 2970 2971 /* Word 12 */ 2972 wqe->fcp_trsp.rsvd_12_15[0] = 0; 2973 2974 /* Use rspbuf, NOT sg list */ 2975 nsegs = 0; 2976 sgl->word2 = 0; 2977 atomic_inc(&tgtp->xmt_fcp_rsp); 2978 break; 2979 2980 default: 2981 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2982 "6064 Unknown Rsp Op %d\n", 2983 rsp->op); 2984 return NULL; 2985 } 2986 2987 nvmewqe->retry = 1; 2988 nvmewqe->vport = phba->pport; 2989 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2990 nvmewqe->ndlp = ndlp; 2991 2992 for_each_sg(rsp->sg, sgel, nsegs, i) { 2993 physaddr = sg_dma_address(sgel); 2994 cnt = sg_dma_len(sgel); 2995 sgl->addr_hi = putPaddrHigh(physaddr); 2996 sgl->addr_lo = putPaddrLow(physaddr); 2997 sgl->word2 = 0; 2998 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2999 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); 3000 if ((i+1) == rsp->sg_cnt) 3001 bf_set(lpfc_sli4_sge_last, sgl, 1); 3002 sgl->word2 = cpu_to_le32(sgl->word2); 3003 sgl->sge_len = cpu_to_le32(cnt); 3004 sgl++; 3005 ctxp->offset += cnt; 3006 } 3007 3008 bde = (struct ulp_bde64 *)&wqe->words[13]; 3009 3010 memset(bde, 0, sizeof(struct ulp_bde64)); 3011 3012 ctxp->state = LPFC_NVME_STE_DATA; 3013 ctxp->entry_cnt++; 3014 return nvmewqe; 3015 } 3016 3017 /** 3018 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS 3019 * @phba: Pointer to HBA context object. 3020 * @cmdwqe: Pointer to driver command WQE object. 3021 * @rspwqe: Pointer to driver response WQE object. 3022 * 3023 * The function is called from SLI ring event handler with no 3024 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 3025 * The function frees memory resources used for the NVME commands. 3026 **/ 3027 static void 3028 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3029 struct lpfc_iocbq *rspwqe) 3030 { 3031 struct lpfc_async_xchg_ctx *ctxp; 3032 struct lpfc_nvmet_tgtport *tgtp; 3033 uint32_t result; 3034 unsigned long flags; 3035 bool released = false; 3036 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 3037 3038 ctxp = cmdwqe->context_un.axchg; 3039 result = wcqe->parameter; 3040 3041 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3042 if (ctxp->flag & LPFC_NVME_ABORT_OP) 3043 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 3044 3045 spin_lock_irqsave(&ctxp->ctxlock, flags); 3046 ctxp->state = LPFC_NVME_STE_DONE; 3047 3048 /* Check if we already received a free context call 3049 * and we have completed processing an abort situation. 3050 */ 3051 if ((ctxp->flag & LPFC_NVME_CTX_RLS) && 3052 !(ctxp->flag & LPFC_NVME_XBUSY)) { 3053 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3054 list_del_init(&ctxp->list); 3055 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3056 released = true; 3057 } 3058 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3059 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3060 atomic_inc(&tgtp->xmt_abort_rsp); 3061 3062 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3063 "6165 ABORT cmpl: oxid x%x flg x%x (%d) " 3064 "WCQE: %08x %08x %08x %08x\n", 3065 ctxp->oxid, ctxp->flag, released, 3066 wcqe->word0, wcqe->total_data_placed, 3067 result, wcqe->word3); 3068 3069 cmdwqe->rsp_dmabuf = NULL; 3070 cmdwqe->bpl_dmabuf = NULL; 3071 /* 3072 * if transport has released ctx, then can reuse it. Otherwise, 3073 * will be recycled by transport release call. 3074 */ 3075 if (released) 3076 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3077 3078 /* This is the iocbq for the abort, not the command */ 3079 lpfc_sli_release_iocbq(phba, cmdwqe); 3080 3081 /* Since iaab/iaar are NOT set, there is no work left. 3082 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted 3083 * should have been called already. 3084 */ 3085 } 3086 3087 /** 3088 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS 3089 * @phba: Pointer to HBA context object. 3090 * @cmdwqe: Pointer to driver command WQE object. 3091 * @rspwqe: Pointer to driver response WQE object. 3092 * 3093 * The function is called from SLI ring event handler with no 3094 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 3095 * The function frees memory resources used for the NVME commands. 3096 **/ 3097 static void 3098 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3099 struct lpfc_iocbq *rspwqe) 3100 { 3101 struct lpfc_async_xchg_ctx *ctxp; 3102 struct lpfc_nvmet_tgtport *tgtp; 3103 unsigned long flags; 3104 uint32_t result; 3105 bool released = false; 3106 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 3107 3108 ctxp = cmdwqe->context_un.axchg; 3109 result = wcqe->parameter; 3110 3111 if (!ctxp) { 3112 /* if context is clear, related io alrady complete */ 3113 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3114 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n", 3115 wcqe->word0, wcqe->total_data_placed, 3116 result, wcqe->word3); 3117 return; 3118 } 3119 3120 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3121 spin_lock_irqsave(&ctxp->ctxlock, flags); 3122 if (ctxp->flag & LPFC_NVME_ABORT_OP) 3123 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 3124 3125 /* Sanity check */ 3126 if (ctxp->state != LPFC_NVME_STE_ABORT) { 3127 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3128 "6112 ABTS Wrong state:%d oxid x%x\n", 3129 ctxp->state, ctxp->oxid); 3130 } 3131 3132 /* Check if we already received a free context call 3133 * and we have completed processing an abort situation. 3134 */ 3135 ctxp->state = LPFC_NVME_STE_DONE; 3136 if ((ctxp->flag & LPFC_NVME_CTX_RLS) && 3137 !(ctxp->flag & LPFC_NVME_XBUSY)) { 3138 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3139 list_del_init(&ctxp->list); 3140 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3141 released = true; 3142 } 3143 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3144 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3145 atomic_inc(&tgtp->xmt_abort_rsp); 3146 3147 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3148 "6316 ABTS cmpl oxid x%x flg x%x (%x) " 3149 "WCQE: %08x %08x %08x %08x\n", 3150 ctxp->oxid, ctxp->flag, released, 3151 wcqe->word0, wcqe->total_data_placed, 3152 result, wcqe->word3); 3153 3154 cmdwqe->rsp_dmabuf = NULL; 3155 cmdwqe->bpl_dmabuf = NULL; 3156 /* 3157 * if transport has released ctx, then can reuse it. Otherwise, 3158 * will be recycled by transport release call. 3159 */ 3160 if (released) 3161 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3162 3163 /* Since iaab/iaar are NOT set, there is no work left. 3164 * For LPFC_NVME_XBUSY, lpfc_sli4_nvmet_xri_aborted 3165 * should have been called already. 3166 */ 3167 } 3168 3169 /** 3170 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS 3171 * @phba: Pointer to HBA context object. 3172 * @cmdwqe: Pointer to driver command WQE object. 3173 * @rspwqe: Pointer to driver response WQE object. 3174 * 3175 * The function is called from SLI ring event handler with no 3176 * lock held. This function is the completion handler for NVME ABTS for LS cmds 3177 * The function frees memory resources used for the NVME commands. 3178 **/ 3179 static void 3180 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3181 struct lpfc_iocbq *rspwqe) 3182 { 3183 struct lpfc_async_xchg_ctx *ctxp; 3184 struct lpfc_nvmet_tgtport *tgtp; 3185 uint32_t result; 3186 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 3187 3188 ctxp = cmdwqe->context_un.axchg; 3189 result = wcqe->parameter; 3190 3191 if (phba->nvmet_support) { 3192 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3193 atomic_inc(&tgtp->xmt_ls_abort_cmpl); 3194 } 3195 3196 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3197 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n", 3198 ctxp, wcqe->word0, wcqe->total_data_placed, 3199 result, wcqe->word3); 3200 3201 if (!ctxp) { 3202 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3203 "6415 NVMET LS Abort No ctx: WCQE: " 3204 "%08x %08x %08x %08x\n", 3205 wcqe->word0, wcqe->total_data_placed, 3206 result, wcqe->word3); 3207 3208 lpfc_sli_release_iocbq(phba, cmdwqe); 3209 return; 3210 } 3211 3212 if (ctxp->state != LPFC_NVME_STE_LS_ABORT) { 3213 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3214 "6416 NVMET LS abort cmpl state mismatch: " 3215 "oxid x%x: %d %d\n", 3216 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3217 } 3218 3219 cmdwqe->rsp_dmabuf = NULL; 3220 cmdwqe->bpl_dmabuf = NULL; 3221 lpfc_sli_release_iocbq(phba, cmdwqe); 3222 kfree(ctxp); 3223 } 3224 3225 static int 3226 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba, 3227 struct lpfc_async_xchg_ctx *ctxp, 3228 uint32_t sid, uint16_t xri) 3229 { 3230 struct lpfc_nvmet_tgtport *tgtp = NULL; 3231 struct lpfc_iocbq *abts_wqeq; 3232 union lpfc_wqe128 *wqe_abts; 3233 struct lpfc_nodelist *ndlp; 3234 3235 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3236 "6067 ABTS: sid %x xri x%x/x%x\n", 3237 sid, xri, ctxp->wqeq->sli4_xritag); 3238 3239 if (phba->nvmet_support && phba->targetport) 3240 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3241 3242 ndlp = lpfc_findnode_did(phba->pport, sid); 3243 if (!ndlp || 3244 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3245 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3246 if (tgtp) 3247 atomic_inc(&tgtp->xmt_abort_rsp_error); 3248 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3249 "6134 Drop ABTS - wrong NDLP state x%x.\n", 3250 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3251 3252 /* No failure to an ABTS request. */ 3253 return 0; 3254 } 3255 3256 abts_wqeq = ctxp->wqeq; 3257 wqe_abts = &abts_wqeq->wqe; 3258 3259 /* 3260 * Since we zero the whole WQE, we need to ensure we set the WQE fields 3261 * that were initialized in lpfc_sli4_nvmet_alloc. 3262 */ 3263 memset(wqe_abts, 0, sizeof(union lpfc_wqe)); 3264 3265 /* Word 5 */ 3266 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0); 3267 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1); 3268 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0); 3269 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS); 3270 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS); 3271 3272 /* Word 6 */ 3273 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com, 3274 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 3275 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com, 3276 abts_wqeq->sli4_xritag); 3277 3278 /* Word 7 */ 3279 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com, 3280 CMD_XMIT_SEQUENCE64_WQE); 3281 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI); 3282 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3); 3283 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0); 3284 3285 /* Word 8 */ 3286 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag; 3287 3288 /* Word 9 */ 3289 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag); 3290 /* Needs to be set by caller */ 3291 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri); 3292 3293 /* Word 10 */ 3294 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 3295 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com, 3296 LPFC_WQE_LENLOC_WORD12); 3297 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0); 3298 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0); 3299 3300 /* Word 11 */ 3301 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com, 3302 LPFC_WQE_CQ_ID_DEFAULT); 3303 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com, 3304 OTHER_COMMAND); 3305 3306 abts_wqeq->vport = phba->pport; 3307 abts_wqeq->ndlp = ndlp; 3308 abts_wqeq->context_un.axchg = ctxp; 3309 abts_wqeq->bpl_dmabuf = NULL; 3310 abts_wqeq->num_bdes = 0; 3311 /* hba_wqidx should already be setup from command we are aborting */ 3312 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR; 3313 abts_wqeq->iocb.ulpLe = 1; 3314 3315 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3316 "6069 Issue ABTS to xri x%x reqtag x%x\n", 3317 xri, abts_wqeq->iotag); 3318 return 1; 3319 } 3320 3321 static int 3322 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba, 3323 struct lpfc_async_xchg_ctx *ctxp, 3324 uint32_t sid, uint16_t xri) 3325 { 3326 struct lpfc_nvmet_tgtport *tgtp; 3327 struct lpfc_iocbq *abts_wqeq; 3328 struct lpfc_nodelist *ndlp; 3329 unsigned long flags; 3330 bool ia; 3331 int rc; 3332 3333 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3334 if (!ctxp->wqeq) { 3335 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3336 ctxp->wqeq->hba_wqidx = 0; 3337 } 3338 3339 ndlp = lpfc_findnode_did(phba->pport, sid); 3340 if (!ndlp || 3341 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3342 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3343 atomic_inc(&tgtp->xmt_abort_rsp_error); 3344 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3345 "6160 Drop ABORT - wrong NDLP state x%x.\n", 3346 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3347 3348 /* No failure to an ABTS request. */ 3349 spin_lock_irqsave(&ctxp->ctxlock, flags); 3350 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3351 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3352 return 0; 3353 } 3354 3355 /* Issue ABTS for this WQE based on iotag */ 3356 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba); 3357 spin_lock_irqsave(&ctxp->ctxlock, flags); 3358 if (!ctxp->abort_wqeq) { 3359 atomic_inc(&tgtp->xmt_abort_rsp_error); 3360 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3361 "6161 ABORT failed: No wqeqs: " 3362 "xri: x%x\n", ctxp->oxid); 3363 /* No failure to an ABTS request. */ 3364 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3365 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3366 return 0; 3367 } 3368 abts_wqeq = ctxp->abort_wqeq; 3369 ctxp->state = LPFC_NVME_STE_ABORT; 3370 ia = (ctxp->flag & LPFC_NVME_ABTS_RCV) ? true : false; 3371 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3372 3373 /* Announce entry to new IO submit field. */ 3374 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3375 "6162 ABORT Request to rport DID x%06x " 3376 "for xri x%x x%x\n", 3377 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag); 3378 3379 /* If the hba is getting reset, this flag is set. It is 3380 * cleared when the reset is complete and rings reestablished. 3381 */ 3382 /* driver queued commands are in process of being flushed */ 3383 if (test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { 3384 atomic_inc(&tgtp->xmt_abort_rsp_error); 3385 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3386 "6163 Driver in reset cleanup - flushing " 3387 "NVME Req now. hba_flag x%lx oxid x%x\n", 3388 phba->hba_flag, ctxp->oxid); 3389 lpfc_sli_release_iocbq(phba, abts_wqeq); 3390 spin_lock_irqsave(&ctxp->ctxlock, flags); 3391 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3392 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3393 return 0; 3394 } 3395 3396 spin_lock_irqsave(&phba->hbalock, flags); 3397 /* Outstanding abort is in progress */ 3398 if (abts_wqeq->cmd_flag & LPFC_DRIVER_ABORTED) { 3399 spin_unlock_irqrestore(&phba->hbalock, flags); 3400 atomic_inc(&tgtp->xmt_abort_rsp_error); 3401 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3402 "6164 Outstanding NVME I/O Abort Request " 3403 "still pending on oxid x%x\n", 3404 ctxp->oxid); 3405 lpfc_sli_release_iocbq(phba, abts_wqeq); 3406 spin_lock_irqsave(&ctxp->ctxlock, flags); 3407 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3408 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3409 return 0; 3410 } 3411 3412 /* Ready - mark outstanding as aborted by driver. */ 3413 abts_wqeq->cmd_flag |= LPFC_DRIVER_ABORTED; 3414 3415 lpfc_sli_prep_abort_xri(phba, abts_wqeq, ctxp->wqeq->sli4_xritag, 3416 abts_wqeq->iotag, CLASS3, 3417 LPFC_WQE_CQ_ID_DEFAULT, ia, true); 3418 3419 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 3420 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx; 3421 abts_wqeq->cmd_cmpl = lpfc_nvmet_sol_fcp_abort_cmp; 3422 abts_wqeq->cmd_flag |= LPFC_IO_NVME; 3423 abts_wqeq->context_un.axchg = ctxp; 3424 abts_wqeq->vport = phba->pport; 3425 if (!ctxp->hdwq) 3426 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3427 3428 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3429 spin_unlock_irqrestore(&phba->hbalock, flags); 3430 if (rc == WQE_SUCCESS) { 3431 atomic_inc(&tgtp->xmt_abort_sol); 3432 return 0; 3433 } 3434 3435 atomic_inc(&tgtp->xmt_abort_rsp_error); 3436 spin_lock_irqsave(&ctxp->ctxlock, flags); 3437 ctxp->flag &= ~LPFC_NVME_ABORT_OP; 3438 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3439 lpfc_sli_release_iocbq(phba, abts_wqeq); 3440 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3441 "6166 Failed ABORT issue_wqe with status x%x " 3442 "for oxid x%x.\n", 3443 rc, ctxp->oxid); 3444 return 1; 3445 } 3446 3447 static int 3448 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba, 3449 struct lpfc_async_xchg_ctx *ctxp, 3450 uint32_t sid, uint16_t xri) 3451 { 3452 struct lpfc_nvmet_tgtport *tgtp; 3453 struct lpfc_iocbq *abts_wqeq; 3454 unsigned long flags; 3455 bool released = false; 3456 int rc; 3457 3458 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3459 if (!ctxp->wqeq) { 3460 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3461 ctxp->wqeq->hba_wqidx = 0; 3462 } 3463 3464 if (ctxp->state == LPFC_NVME_STE_FREE) { 3465 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3466 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n", 3467 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 3468 rc = WQE_BUSY; 3469 goto aerr; 3470 } 3471 ctxp->state = LPFC_NVME_STE_ABORT; 3472 ctxp->entry_cnt++; 3473 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); 3474 if (rc == 0) 3475 goto aerr; 3476 3477 spin_lock_irqsave(&phba->hbalock, flags); 3478 abts_wqeq = ctxp->wqeq; 3479 abts_wqeq->cmd_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp; 3480 abts_wqeq->cmd_flag |= LPFC_IO_NVMET; 3481 if (!ctxp->hdwq) 3482 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3483 3484 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3485 spin_unlock_irqrestore(&phba->hbalock, flags); 3486 if (rc == WQE_SUCCESS) { 3487 return 0; 3488 } 3489 3490 aerr: 3491 spin_lock_irqsave(&ctxp->ctxlock, flags); 3492 if (ctxp->flag & LPFC_NVME_CTX_RLS) { 3493 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3494 list_del_init(&ctxp->list); 3495 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3496 released = true; 3497 } 3498 ctxp->flag &= ~(LPFC_NVME_ABORT_OP | LPFC_NVME_CTX_RLS); 3499 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3500 3501 atomic_inc(&tgtp->xmt_abort_rsp_error); 3502 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3503 "6135 Failed to Issue ABTS for oxid x%x. Status x%x " 3504 "(%x)\n", 3505 ctxp->oxid, rc, released); 3506 if (released) 3507 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3508 return 1; 3509 } 3510 3511 /** 3512 * lpfc_nvme_unsol_ls_issue_abort - issue ABTS on an exchange received 3513 * via async frame receive where the frame is not handled. 3514 * @phba: pointer to adapter structure 3515 * @ctxp: pointer to the asynchronously received received sequence 3516 * @sid: address of the remote port to send the ABTS to 3517 * @xri: oxid value to for the ABTS (other side's exchange id). 3518 **/ 3519 int 3520 lpfc_nvme_unsol_ls_issue_abort(struct lpfc_hba *phba, 3521 struct lpfc_async_xchg_ctx *ctxp, 3522 uint32_t sid, uint16_t xri) 3523 { 3524 struct lpfc_nvmet_tgtport *tgtp = NULL; 3525 struct lpfc_iocbq *abts_wqeq; 3526 unsigned long flags; 3527 int rc; 3528 3529 if ((ctxp->state == LPFC_NVME_STE_LS_RCV && ctxp->entry_cnt == 1) || 3530 (ctxp->state == LPFC_NVME_STE_LS_RSP && ctxp->entry_cnt == 2)) { 3531 ctxp->state = LPFC_NVME_STE_LS_ABORT; 3532 ctxp->entry_cnt++; 3533 } else { 3534 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3535 "6418 NVMET LS abort state mismatch " 3536 "IO x%x: %d %d\n", 3537 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3538 ctxp->state = LPFC_NVME_STE_LS_ABORT; 3539 } 3540 3541 if (phba->nvmet_support && phba->targetport) 3542 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3543 3544 if (!ctxp->wqeq) { 3545 /* Issue ABTS for this WQE based on iotag */ 3546 ctxp->wqeq = lpfc_sli_get_iocbq(phba); 3547 if (!ctxp->wqeq) { 3548 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3549 "6068 Abort failed: No wqeqs: " 3550 "xri: x%x\n", xri); 3551 /* No failure to an ABTS request. */ 3552 kfree(ctxp); 3553 return 0; 3554 } 3555 } 3556 abts_wqeq = ctxp->wqeq; 3557 3558 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) { 3559 rc = WQE_BUSY; 3560 goto out; 3561 } 3562 3563 spin_lock_irqsave(&phba->hbalock, flags); 3564 abts_wqeq->cmd_cmpl = lpfc_nvmet_xmt_ls_abort_cmp; 3565 abts_wqeq->cmd_flag |= LPFC_IO_NVME_LS; 3566 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3567 spin_unlock_irqrestore(&phba->hbalock, flags); 3568 if (rc == WQE_SUCCESS) { 3569 if (tgtp) 3570 atomic_inc(&tgtp->xmt_abort_unsol); 3571 return 0; 3572 } 3573 out: 3574 if (tgtp) 3575 atomic_inc(&tgtp->xmt_abort_rsp_error); 3576 abts_wqeq->rsp_dmabuf = NULL; 3577 abts_wqeq->bpl_dmabuf = NULL; 3578 lpfc_sli_release_iocbq(phba, abts_wqeq); 3579 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 3580 "6056 Failed to Issue ABTS. Status x%x\n", rc); 3581 return 1; 3582 } 3583 3584 /** 3585 * lpfc_nvmet_invalidate_host 3586 * 3587 * @phba: pointer to the driver instance bound to an adapter port. 3588 * @ndlp: pointer to an lpfc_nodelist type 3589 * 3590 * This routine upcalls the nvmet transport to invalidate an NVME 3591 * host to which this target instance had active connections. 3592 */ 3593 void 3594 lpfc_nvmet_invalidate_host(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 3595 { 3596 u32 ndlp_has_hh; 3597 struct lpfc_nvmet_tgtport *tgtp; 3598 3599 lpfc_printf_log(phba, KERN_INFO, 3600 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC, 3601 "6203 Invalidating hosthandle x%px\n", 3602 ndlp); 3603 3604 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3605 atomic_set(&tgtp->state, LPFC_NVMET_INV_HOST_ACTIVE); 3606 3607 spin_lock_irq(&ndlp->lock); 3608 ndlp_has_hh = ndlp->fc4_xpt_flags & NLP_XPT_HAS_HH; 3609 spin_unlock_irq(&ndlp->lock); 3610 3611 /* Do not invalidate any nodes that do not have a hosthandle. 3612 * The host_release callbk will cause a node reference 3613 * count imbalance and a crash. 3614 */ 3615 if (!ndlp_has_hh) { 3616 lpfc_printf_log(phba, KERN_INFO, 3617 LOG_NVME | LOG_NVME_ABTS | LOG_NVME_DISC, 3618 "6204 Skip invalidate on node x%px DID x%x\n", 3619 ndlp, ndlp->nlp_DID); 3620 return; 3621 } 3622 3623 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 3624 /* Need to get the nvmet_fc_target_port pointer here.*/ 3625 nvmet_fc_invalidate_host(phba->targetport, ndlp); 3626 #endif 3627 } 3628