1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channsel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/delay.h> 27 #include <asm/unaligned.h> 28 #include <linux/crc-t10dif.h> 29 #include <net/checksum.h> 30 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include <linux/nvme.h> 40 #include <linux/nvme-fc-driver.h> 41 #include <linux/nvme-fc.h> 42 43 #include "lpfc_version.h" 44 #include "lpfc_hw4.h" 45 #include "lpfc_hw.h" 46 #include "lpfc_sli.h" 47 #include "lpfc_sli4.h" 48 #include "lpfc_nl.h" 49 #include "lpfc_disc.h" 50 #include "lpfc.h" 51 #include "lpfc_scsi.h" 52 #include "lpfc_nvme.h" 53 #include "lpfc_nvmet.h" 54 #include "lpfc_logmsg.h" 55 #include "lpfc_crtn.h" 56 #include "lpfc_vport.h" 57 #include "lpfc_debugfs.h" 58 59 static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *, 60 struct lpfc_nvmet_rcv_ctx *, 61 dma_addr_t rspbuf, 62 uint16_t rspsize); 63 static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *, 64 struct lpfc_nvmet_rcv_ctx *); 65 static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *, 66 struct lpfc_nvmet_rcv_ctx *, 67 uint32_t, uint16_t); 68 static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *, 69 struct lpfc_nvmet_rcv_ctx *, 70 uint32_t, uint16_t); 71 static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *, 72 struct lpfc_nvmet_rcv_ctx *, 73 uint32_t, uint16_t); 74 static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *, 75 struct lpfc_nvmet_rcv_ctx *); 76 static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *); 77 78 static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf); 79 80 static union lpfc_wqe128 lpfc_tsend_cmd_template; 81 static union lpfc_wqe128 lpfc_treceive_cmd_template; 82 static union lpfc_wqe128 lpfc_trsp_cmd_template; 83 84 /* Setup WQE templates for NVME IOs */ 85 void 86 lpfc_nvmet_cmd_template(void) 87 { 88 union lpfc_wqe128 *wqe; 89 90 /* TSEND template */ 91 wqe = &lpfc_tsend_cmd_template; 92 memset(wqe, 0, sizeof(union lpfc_wqe128)); 93 94 /* Word 0, 1, 2 - BDE is variable */ 95 96 /* Word 3 - payload_offset_len is zero */ 97 98 /* Word 4 - relative_offset is variable */ 99 100 /* Word 5 - is zero */ 101 102 /* Word 6 - ctxt_tag, xri_tag is variable */ 103 104 /* Word 7 - wqe_ar is variable */ 105 bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE); 106 bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, PARM_REL_OFF); 107 bf_set(wqe_class, &wqe->fcp_tsend.wqe_com, CLASS3); 108 bf_set(wqe_ct, &wqe->fcp_tsend.wqe_com, SLI4_CT_RPI); 109 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1); 110 111 /* Word 8 - abort_tag is variable */ 112 113 /* Word 9 - reqtag, rcvoxid is variable */ 114 115 /* Word 10 - wqes, xc is variable */ 116 bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); 117 bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1); 118 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0); 119 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); 120 bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE); 121 bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com, LPFC_WQE_LENLOC_WORD12); 122 123 /* Word 11 - sup, irsp, irsplen is variable */ 124 bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, FCP_COMMAND_TSEND); 125 bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 126 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); 127 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0); 128 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0); 129 bf_set(wqe_pbde, &wqe->fcp_tsend.wqe_com, 0); 130 131 /* Word 12 - fcp_data_len is variable */ 132 133 /* Word 13, 14, 15 - PBDE is zero */ 134 135 /* TRECEIVE template */ 136 wqe = &lpfc_treceive_cmd_template; 137 memset(wqe, 0, sizeof(union lpfc_wqe128)); 138 139 /* Word 0, 1, 2 - BDE is variable */ 140 141 /* Word 3 */ 142 wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN; 143 144 /* Word 4 - relative_offset is variable */ 145 146 /* Word 5 - is zero */ 147 148 /* Word 6 - ctxt_tag, xri_tag is variable */ 149 150 /* Word 7 */ 151 bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE); 152 bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF); 153 bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3); 154 bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI); 155 bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0); 156 157 /* Word 8 - abort_tag is variable */ 158 159 /* Word 9 - reqtag, rcvoxid is variable */ 160 161 /* Word 10 - xc is variable */ 162 bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1); 163 bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0); 164 bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1); 165 bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ); 166 bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12); 167 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); 168 169 /* Word 11 - pbde is variable */ 170 bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE); 171 bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 172 bf_set(wqe_sup, &wqe->fcp_treceive.wqe_com, 0); 173 bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0); 174 bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0); 175 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 1); 176 177 /* Word 12 - fcp_data_len is variable */ 178 179 /* Word 13, 14, 15 - PBDE is variable */ 180 181 /* TRSP template */ 182 wqe = &lpfc_trsp_cmd_template; 183 memset(wqe, 0, sizeof(union lpfc_wqe128)); 184 185 /* Word 0, 1, 2 - BDE is variable */ 186 187 /* Word 3 - response_len is variable */ 188 189 /* Word 4, 5 - is zero */ 190 191 /* Word 6 - ctxt_tag, xri_tag is variable */ 192 193 /* Word 7 */ 194 bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE); 195 bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED); 196 bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3); 197 bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI); 198 bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */ 199 200 /* Word 8 - abort_tag is variable */ 201 202 /* Word 9 - reqtag is variable */ 203 204 /* Word 10 wqes, xc is variable */ 205 bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1); 206 bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1); 207 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0); 208 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0); 209 bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE); 210 bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3); 211 212 /* Word 11 irsp, irsplen is variable */ 213 bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP); 214 bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 215 bf_set(wqe_sup, &wqe->fcp_trsp.wqe_com, 0); 216 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0); 217 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0); 218 bf_set(wqe_pbde, &wqe->fcp_trsp.wqe_com, 0); 219 220 /* Word 12, 13, 14, 15 - is zero */ 221 } 222 223 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 224 static struct lpfc_nvmet_rcv_ctx * 225 lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri) 226 { 227 struct lpfc_nvmet_rcv_ctx *ctxp; 228 unsigned long iflag; 229 bool found = false; 230 231 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 232 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 233 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 234 continue; 235 236 found = true; 237 break; 238 } 239 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 240 if (found) 241 return ctxp; 242 243 return NULL; 244 } 245 246 static struct lpfc_nvmet_rcv_ctx * 247 lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid) 248 { 249 struct lpfc_nvmet_rcv_ctx *ctxp; 250 unsigned long iflag; 251 bool found = false; 252 253 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 254 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 255 if (ctxp->oxid != oxid || ctxp->sid != sid) 256 continue; 257 258 found = true; 259 break; 260 } 261 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 262 if (found) 263 return ctxp; 264 265 return NULL; 266 } 267 #endif 268 269 static void 270 lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp) 271 { 272 lockdep_assert_held(&ctxp->ctxlock); 273 274 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 275 "6313 NVMET Defer ctx release oxid x%x flg x%x\n", 276 ctxp->oxid, ctxp->flag); 277 278 if (ctxp->flag & LPFC_NVMET_CTX_RLS) 279 return; 280 281 ctxp->flag |= LPFC_NVMET_CTX_RLS; 282 spin_lock(&phba->sli4_hba.t_active_list_lock); 283 list_del(&ctxp->list); 284 spin_unlock(&phba->sli4_hba.t_active_list_lock); 285 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 286 list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list); 287 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 288 } 289 290 /** 291 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response 292 * @phba: Pointer to HBA context object. 293 * @cmdwqe: Pointer to driver command WQE object. 294 * @wcqe: Pointer to driver response CQE object. 295 * 296 * The function is called from SLI ring event handler with no 297 * lock held. This function is the completion handler for NVME LS commands 298 * The function frees memory resources used for the NVME commands. 299 **/ 300 static void 301 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 302 struct lpfc_wcqe_complete *wcqe) 303 { 304 struct lpfc_nvmet_tgtport *tgtp; 305 struct nvmefc_tgt_ls_req *rsp; 306 struct lpfc_nvmet_rcv_ctx *ctxp; 307 uint32_t status, result; 308 309 status = bf_get(lpfc_wcqe_c_status, wcqe); 310 result = wcqe->parameter; 311 ctxp = cmdwqe->context2; 312 313 if (ctxp->state != LPFC_NVMET_STE_LS_RSP || ctxp->entry_cnt != 2) { 314 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 315 "6410 NVMET LS cmpl state mismatch IO x%x: " 316 "%d %d\n", 317 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 318 } 319 320 if (!phba->targetport) 321 goto out; 322 323 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 324 325 if (tgtp) { 326 if (status) { 327 atomic_inc(&tgtp->xmt_ls_rsp_error); 328 if (result == IOERR_ABORT_REQUESTED) 329 atomic_inc(&tgtp->xmt_ls_rsp_aborted); 330 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 331 atomic_inc(&tgtp->xmt_ls_rsp_xb_set); 332 } else { 333 atomic_inc(&tgtp->xmt_ls_rsp_cmpl); 334 } 335 } 336 337 out: 338 rsp = &ctxp->ctx.ls_req; 339 340 lpfc_nvmeio_data(phba, "NVMET LS CMPL: xri x%x stat x%x result x%x\n", 341 ctxp->oxid, status, result); 342 343 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 344 "6038 NVMET LS rsp cmpl: %d %d oxid x%x\n", 345 status, result, ctxp->oxid); 346 347 lpfc_nlp_put(cmdwqe->context1); 348 cmdwqe->context2 = NULL; 349 cmdwqe->context3 = NULL; 350 lpfc_sli_release_iocbq(phba, cmdwqe); 351 rsp->done(rsp); 352 kfree(ctxp); 353 } 354 355 /** 356 * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context 357 * @phba: HBA buffer is associated with 358 * @ctxp: context to clean up 359 * @mp: Buffer to free 360 * 361 * Description: Frees the given DMA buffer in the appropriate way given by 362 * reposting it to its associated RQ so it can be reused. 363 * 364 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 365 * 366 * Returns: None 367 **/ 368 void 369 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) 370 { 371 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 372 struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context; 373 struct lpfc_nvmet_tgtport *tgtp; 374 struct fc_frame_header *fc_hdr; 375 struct rqb_dmabuf *nvmebuf; 376 struct lpfc_nvmet_ctx_info *infop; 377 uint32_t size, oxid, sid; 378 int cpu; 379 unsigned long iflag; 380 381 if (ctxp->txrdy) { 382 dma_pool_free(phba->txrdy_payload_pool, ctxp->txrdy, 383 ctxp->txrdy_phys); 384 ctxp->txrdy = NULL; 385 ctxp->txrdy_phys = 0; 386 } 387 388 if (ctxp->state == LPFC_NVMET_STE_FREE) { 389 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 390 "6411 NVMET free, already free IO x%x: %d %d\n", 391 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 392 } 393 394 if (ctxp->rqb_buffer) { 395 spin_lock_irqsave(&ctxp->ctxlock, iflag); 396 nvmebuf = ctxp->rqb_buffer; 397 /* check if freed in another path whilst acquiring lock */ 398 if (nvmebuf) { 399 ctxp->rqb_buffer = NULL; 400 if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) { 401 ctxp->flag &= ~LPFC_NVMET_CTX_REUSE_WQ; 402 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 403 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, 404 nvmebuf); 405 } else { 406 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 407 /* repost */ 408 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 409 } 410 } else { 411 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 412 } 413 } 414 ctxp->state = LPFC_NVMET_STE_FREE; 415 416 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 417 if (phba->sli4_hba.nvmet_io_wait_cnt) { 418 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list, 419 nvmebuf, struct rqb_dmabuf, 420 hbuf.list); 421 phba->sli4_hba.nvmet_io_wait_cnt--; 422 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 423 iflag); 424 425 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 426 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 427 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 428 size = nvmebuf->bytes_recv; 429 sid = sli4_sid_from_fc_hdr(fc_hdr); 430 431 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context; 432 ctxp->wqeq = NULL; 433 ctxp->txrdy = NULL; 434 ctxp->offset = 0; 435 ctxp->phba = phba; 436 ctxp->size = size; 437 ctxp->oxid = oxid; 438 ctxp->sid = sid; 439 ctxp->state = LPFC_NVMET_STE_RCV; 440 ctxp->entry_cnt = 1; 441 ctxp->flag = 0; 442 ctxp->ctxbuf = ctx_buf; 443 ctxp->rqb_buffer = (void *)nvmebuf; 444 spin_lock_init(&ctxp->ctxlock); 445 446 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 447 /* NOTE: isr time stamp is stale when context is re-assigned*/ 448 if (ctxp->ts_isr_cmd) { 449 ctxp->ts_cmd_nvme = 0; 450 ctxp->ts_nvme_data = 0; 451 ctxp->ts_data_wqput = 0; 452 ctxp->ts_isr_data = 0; 453 ctxp->ts_data_nvme = 0; 454 ctxp->ts_nvme_status = 0; 455 ctxp->ts_status_wqput = 0; 456 ctxp->ts_isr_status = 0; 457 ctxp->ts_status_nvme = 0; 458 } 459 #endif 460 atomic_inc(&tgtp->rcv_fcp_cmd_in); 461 462 /* Indicate that a replacement buffer has been posted */ 463 spin_lock_irqsave(&ctxp->ctxlock, iflag); 464 ctxp->flag |= LPFC_NVMET_CTX_REUSE_WQ; 465 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 466 467 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 468 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 469 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 470 "6181 Unable to queue deferred work " 471 "for oxid x%x. " 472 "FCP Drop IO [x%x x%x x%x]\n", 473 ctxp->oxid, 474 atomic_read(&tgtp->rcv_fcp_cmd_in), 475 atomic_read(&tgtp->rcv_fcp_cmd_out), 476 atomic_read(&tgtp->xmt_fcp_release)); 477 478 spin_lock_irqsave(&ctxp->ctxlock, iflag); 479 lpfc_nvmet_defer_release(phba, ctxp); 480 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 481 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 482 } 483 return; 484 } 485 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 486 487 /* 488 * Use the CPU context list, from the MRQ the IO was received on 489 * (ctxp->idx), to save context structure. 490 */ 491 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 492 list_del_init(&ctxp->list); 493 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 494 cpu = raw_smp_processor_id(); 495 infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx); 496 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag); 497 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 498 infop->nvmet_ctx_list_cnt++; 499 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag); 500 #endif 501 } 502 503 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 504 static void 505 lpfc_nvmet_ktime(struct lpfc_hba *phba, 506 struct lpfc_nvmet_rcv_ctx *ctxp) 507 { 508 uint64_t seg1, seg2, seg3, seg4, seg5; 509 uint64_t seg6, seg7, seg8, seg9, seg10; 510 uint64_t segsum; 511 512 if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme || 513 !ctxp->ts_nvme_data || !ctxp->ts_data_wqput || 514 !ctxp->ts_isr_data || !ctxp->ts_data_nvme || 515 !ctxp->ts_nvme_status || !ctxp->ts_status_wqput || 516 !ctxp->ts_isr_status || !ctxp->ts_status_nvme) 517 return; 518 519 if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd) 520 return; 521 if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme) 522 return; 523 if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data) 524 return; 525 if (ctxp->ts_nvme_data > ctxp->ts_data_wqput) 526 return; 527 if (ctxp->ts_data_wqput > ctxp->ts_isr_data) 528 return; 529 if (ctxp->ts_isr_data > ctxp->ts_data_nvme) 530 return; 531 if (ctxp->ts_data_nvme > ctxp->ts_nvme_status) 532 return; 533 if (ctxp->ts_nvme_status > ctxp->ts_status_wqput) 534 return; 535 if (ctxp->ts_status_wqput > ctxp->ts_isr_status) 536 return; 537 if (ctxp->ts_isr_status > ctxp->ts_status_nvme) 538 return; 539 /* 540 * Segment 1 - Time from FCP command received by MSI-X ISR 541 * to FCP command is passed to NVME Layer. 542 * Segment 2 - Time from FCP command payload handed 543 * off to NVME Layer to Driver receives a Command op 544 * from NVME Layer. 545 * Segment 3 - Time from Driver receives a Command op 546 * from NVME Layer to Command is put on WQ. 547 * Segment 4 - Time from Driver WQ put is done 548 * to MSI-X ISR for Command cmpl. 549 * Segment 5 - Time from MSI-X ISR for Command cmpl to 550 * Command cmpl is passed to NVME Layer. 551 * Segment 6 - Time from Command cmpl is passed to NVME 552 * Layer to Driver receives a RSP op from NVME Layer. 553 * Segment 7 - Time from Driver receives a RSP op from 554 * NVME Layer to WQ put is done on TRSP FCP Status. 555 * Segment 8 - Time from Driver WQ put is done on TRSP 556 * FCP Status to MSI-X ISR for TRSP cmpl. 557 * Segment 9 - Time from MSI-X ISR for TRSP cmpl to 558 * TRSP cmpl is passed to NVME Layer. 559 * Segment 10 - Time from FCP command received by 560 * MSI-X ISR to command is completed on wire. 561 * (Segments 1 thru 8) for READDATA / WRITEDATA 562 * (Segments 1 thru 4) for READDATA_RSP 563 */ 564 seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd; 565 segsum = seg1; 566 567 seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd; 568 if (segsum > seg2) 569 return; 570 seg2 -= segsum; 571 segsum += seg2; 572 573 seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd; 574 if (segsum > seg3) 575 return; 576 seg3 -= segsum; 577 segsum += seg3; 578 579 seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd; 580 if (segsum > seg4) 581 return; 582 seg4 -= segsum; 583 segsum += seg4; 584 585 seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd; 586 if (segsum > seg5) 587 return; 588 seg5 -= segsum; 589 segsum += seg5; 590 591 592 /* For auto rsp commands seg6 thru seg10 will be 0 */ 593 if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) { 594 seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd; 595 if (segsum > seg6) 596 return; 597 seg6 -= segsum; 598 segsum += seg6; 599 600 seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd; 601 if (segsum > seg7) 602 return; 603 seg7 -= segsum; 604 segsum += seg7; 605 606 seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd; 607 if (segsum > seg8) 608 return; 609 seg8 -= segsum; 610 segsum += seg8; 611 612 seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd; 613 if (segsum > seg9) 614 return; 615 seg9 -= segsum; 616 segsum += seg9; 617 618 if (ctxp->ts_isr_status < ctxp->ts_isr_cmd) 619 return; 620 seg10 = (ctxp->ts_isr_status - 621 ctxp->ts_isr_cmd); 622 } else { 623 if (ctxp->ts_isr_data < ctxp->ts_isr_cmd) 624 return; 625 seg6 = 0; 626 seg7 = 0; 627 seg8 = 0; 628 seg9 = 0; 629 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd); 630 } 631 632 phba->ktime_seg1_total += seg1; 633 if (seg1 < phba->ktime_seg1_min) 634 phba->ktime_seg1_min = seg1; 635 else if (seg1 > phba->ktime_seg1_max) 636 phba->ktime_seg1_max = seg1; 637 638 phba->ktime_seg2_total += seg2; 639 if (seg2 < phba->ktime_seg2_min) 640 phba->ktime_seg2_min = seg2; 641 else if (seg2 > phba->ktime_seg2_max) 642 phba->ktime_seg2_max = seg2; 643 644 phba->ktime_seg3_total += seg3; 645 if (seg3 < phba->ktime_seg3_min) 646 phba->ktime_seg3_min = seg3; 647 else if (seg3 > phba->ktime_seg3_max) 648 phba->ktime_seg3_max = seg3; 649 650 phba->ktime_seg4_total += seg4; 651 if (seg4 < phba->ktime_seg4_min) 652 phba->ktime_seg4_min = seg4; 653 else if (seg4 > phba->ktime_seg4_max) 654 phba->ktime_seg4_max = seg4; 655 656 phba->ktime_seg5_total += seg5; 657 if (seg5 < phba->ktime_seg5_min) 658 phba->ktime_seg5_min = seg5; 659 else if (seg5 > phba->ktime_seg5_max) 660 phba->ktime_seg5_max = seg5; 661 662 phba->ktime_data_samples++; 663 if (!seg6) 664 goto out; 665 666 phba->ktime_seg6_total += seg6; 667 if (seg6 < phba->ktime_seg6_min) 668 phba->ktime_seg6_min = seg6; 669 else if (seg6 > phba->ktime_seg6_max) 670 phba->ktime_seg6_max = seg6; 671 672 phba->ktime_seg7_total += seg7; 673 if (seg7 < phba->ktime_seg7_min) 674 phba->ktime_seg7_min = seg7; 675 else if (seg7 > phba->ktime_seg7_max) 676 phba->ktime_seg7_max = seg7; 677 678 phba->ktime_seg8_total += seg8; 679 if (seg8 < phba->ktime_seg8_min) 680 phba->ktime_seg8_min = seg8; 681 else if (seg8 > phba->ktime_seg8_max) 682 phba->ktime_seg8_max = seg8; 683 684 phba->ktime_seg9_total += seg9; 685 if (seg9 < phba->ktime_seg9_min) 686 phba->ktime_seg9_min = seg9; 687 else if (seg9 > phba->ktime_seg9_max) 688 phba->ktime_seg9_max = seg9; 689 out: 690 phba->ktime_seg10_total += seg10; 691 if (seg10 < phba->ktime_seg10_min) 692 phba->ktime_seg10_min = seg10; 693 else if (seg10 > phba->ktime_seg10_max) 694 phba->ktime_seg10_max = seg10; 695 phba->ktime_status_samples++; 696 } 697 #endif 698 699 /** 700 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response 701 * @phba: Pointer to HBA context object. 702 * @cmdwqe: Pointer to driver command WQE object. 703 * @wcqe: Pointer to driver response CQE object. 704 * 705 * The function is called from SLI ring event handler with no 706 * lock held. This function is the completion handler for NVME FCP commands 707 * The function frees memory resources used for the NVME commands. 708 **/ 709 static void 710 lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 711 struct lpfc_wcqe_complete *wcqe) 712 { 713 struct lpfc_nvmet_tgtport *tgtp; 714 struct nvmefc_tgt_fcp_req *rsp; 715 struct lpfc_nvmet_rcv_ctx *ctxp; 716 uint32_t status, result, op, start_clean, logerr; 717 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 718 uint32_t id; 719 #endif 720 721 ctxp = cmdwqe->context2; 722 ctxp->flag &= ~LPFC_NVMET_IO_INP; 723 724 rsp = &ctxp->ctx.fcp_req; 725 op = rsp->op; 726 727 status = bf_get(lpfc_wcqe_c_status, wcqe); 728 result = wcqe->parameter; 729 730 if (phba->targetport) 731 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 732 else 733 tgtp = NULL; 734 735 lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n", 736 ctxp->oxid, op, status); 737 738 if (status) { 739 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR; 740 rsp->transferred_length = 0; 741 if (tgtp) { 742 atomic_inc(&tgtp->xmt_fcp_rsp_error); 743 if (result == IOERR_ABORT_REQUESTED) 744 atomic_inc(&tgtp->xmt_fcp_rsp_aborted); 745 } 746 747 logerr = LOG_NVME_IOERR; 748 749 /* pick up SLI4 exhange busy condition */ 750 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 751 ctxp->flag |= LPFC_NVMET_XBUSY; 752 logerr |= LOG_NVME_ABTS; 753 if (tgtp) 754 atomic_inc(&tgtp->xmt_fcp_rsp_xb_set); 755 756 } else { 757 ctxp->flag &= ~LPFC_NVMET_XBUSY; 758 } 759 760 lpfc_printf_log(phba, KERN_INFO, logerr, 761 "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x " 762 "XBUSY:x%x\n", 763 ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag, 764 status, result, ctxp->flag); 765 766 } else { 767 rsp->fcp_error = NVME_SC_SUCCESS; 768 if (op == NVMET_FCOP_RSP) 769 rsp->transferred_length = rsp->rsplen; 770 else 771 rsp->transferred_length = rsp->transfer_length; 772 if (tgtp) 773 atomic_inc(&tgtp->xmt_fcp_rsp_cmpl); 774 } 775 776 if ((op == NVMET_FCOP_READDATA_RSP) || 777 (op == NVMET_FCOP_RSP)) { 778 /* Sanity check */ 779 ctxp->state = LPFC_NVMET_STE_DONE; 780 ctxp->entry_cnt++; 781 782 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 783 if (ctxp->ts_cmd_nvme) { 784 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 785 ctxp->ts_isr_data = 786 cmdwqe->isr_timestamp; 787 ctxp->ts_data_nvme = 788 ktime_get_ns(); 789 ctxp->ts_nvme_status = 790 ctxp->ts_data_nvme; 791 ctxp->ts_status_wqput = 792 ctxp->ts_data_nvme; 793 ctxp->ts_isr_status = 794 ctxp->ts_data_nvme; 795 ctxp->ts_status_nvme = 796 ctxp->ts_data_nvme; 797 } else { 798 ctxp->ts_isr_status = 799 cmdwqe->isr_timestamp; 800 ctxp->ts_status_nvme = 801 ktime_get_ns(); 802 } 803 } 804 #endif 805 rsp->done(rsp); 806 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 807 if (ctxp->ts_cmd_nvme) 808 lpfc_nvmet_ktime(phba, ctxp); 809 #endif 810 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */ 811 } else { 812 ctxp->entry_cnt++; 813 start_clean = offsetof(struct lpfc_iocbq, iocb_flag); 814 memset(((char *)cmdwqe) + start_clean, 0, 815 (sizeof(struct lpfc_iocbq) - start_clean)); 816 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 817 if (ctxp->ts_cmd_nvme) { 818 ctxp->ts_isr_data = cmdwqe->isr_timestamp; 819 ctxp->ts_data_nvme = ktime_get_ns(); 820 } 821 #endif 822 rsp->done(rsp); 823 } 824 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 825 if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) { 826 id = raw_smp_processor_id(); 827 if (id < LPFC_CHECK_CPU_CNT) { 828 if (ctxp->cpu != id) 829 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 830 "6704 CPU Check cmdcmpl: " 831 "cpu %d expect %d\n", 832 id, ctxp->cpu); 833 phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_cmpl_io[id]++; 834 } 835 } 836 #endif 837 } 838 839 static int 840 lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, 841 struct nvmefc_tgt_ls_req *rsp) 842 { 843 struct lpfc_nvmet_rcv_ctx *ctxp = 844 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req); 845 struct lpfc_hba *phba = ctxp->phba; 846 struct hbq_dmabuf *nvmebuf = 847 (struct hbq_dmabuf *)ctxp->rqb_buffer; 848 struct lpfc_iocbq *nvmewqeq; 849 struct lpfc_nvmet_tgtport *nvmep = tgtport->private; 850 struct lpfc_dmabuf dmabuf; 851 struct ulp_bde64 bpl; 852 int rc; 853 854 if (phba->pport->load_flag & FC_UNLOADING) 855 return -ENODEV; 856 857 if (phba->pport->load_flag & FC_UNLOADING) 858 return -ENODEV; 859 860 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 861 "6023 NVMET LS rsp oxid x%x\n", ctxp->oxid); 862 863 if ((ctxp->state != LPFC_NVMET_STE_LS_RCV) || 864 (ctxp->entry_cnt != 1)) { 865 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 866 "6412 NVMET LS rsp state mismatch " 867 "oxid x%x: %d %d\n", 868 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 869 } 870 ctxp->state = LPFC_NVMET_STE_LS_RSP; 871 ctxp->entry_cnt++; 872 873 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma, 874 rsp->rsplen); 875 if (nvmewqeq == NULL) { 876 atomic_inc(&nvmep->xmt_ls_drop); 877 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 878 "6150 LS Drop IO x%x: Prep\n", 879 ctxp->oxid); 880 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 881 atomic_inc(&nvmep->xmt_ls_abort); 882 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, 883 ctxp->sid, ctxp->oxid); 884 return -ENOMEM; 885 } 886 887 /* Save numBdes for bpl2sgl */ 888 nvmewqeq->rsvd2 = 1; 889 nvmewqeq->hba_wqidx = 0; 890 nvmewqeq->context3 = &dmabuf; 891 dmabuf.virt = &bpl; 892 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; 893 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; 894 bpl.tus.f.bdeSize = rsp->rsplen; 895 bpl.tus.f.bdeFlags = 0; 896 bpl.tus.w = le32_to_cpu(bpl.tus.w); 897 898 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp; 899 nvmewqeq->iocb_cmpl = NULL; 900 nvmewqeq->context2 = ctxp; 901 902 lpfc_nvmeio_data(phba, "NVMET LS RESP: xri x%x wqidx x%x len x%x\n", 903 ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen); 904 905 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 906 if (rc == WQE_SUCCESS) { 907 /* 908 * Okay to repost buffer here, but wait till cmpl 909 * before freeing ctxp and iocbq. 910 */ 911 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 912 atomic_inc(&nvmep->xmt_ls_rsp); 913 return 0; 914 } 915 /* Give back resources */ 916 atomic_inc(&nvmep->xmt_ls_drop); 917 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 918 "6151 LS Drop IO x%x: Issue %d\n", 919 ctxp->oxid, rc); 920 921 lpfc_nlp_put(nvmewqeq->context1); 922 923 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 924 atomic_inc(&nvmep->xmt_ls_abort); 925 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 926 return -ENXIO; 927 } 928 929 static int 930 lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, 931 struct nvmefc_tgt_fcp_req *rsp) 932 { 933 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 934 struct lpfc_nvmet_rcv_ctx *ctxp = 935 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 936 struct lpfc_hba *phba = ctxp->phba; 937 struct lpfc_queue *wq; 938 struct lpfc_iocbq *nvmewqeq; 939 struct lpfc_sli_ring *pring; 940 unsigned long iflags; 941 int rc; 942 943 if (phba->pport->load_flag & FC_UNLOADING) { 944 rc = -ENODEV; 945 goto aerr; 946 } 947 948 if (phba->pport->load_flag & FC_UNLOADING) { 949 rc = -ENODEV; 950 goto aerr; 951 } 952 953 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 954 if (ctxp->ts_cmd_nvme) { 955 if (rsp->op == NVMET_FCOP_RSP) 956 ctxp->ts_nvme_status = ktime_get_ns(); 957 else 958 ctxp->ts_nvme_data = ktime_get_ns(); 959 } 960 961 /* Setup the hdw queue if not already set */ 962 if (!ctxp->hdwq) 963 ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid]; 964 965 if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) { 966 int id = raw_smp_processor_id(); 967 if (id < LPFC_CHECK_CPU_CNT) { 968 if (rsp->hwqid != id) 969 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 970 "6705 CPU Check OP: " 971 "cpu %d expect %d\n", 972 id, rsp->hwqid); 973 phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_xmt_io[id]++; 974 } 975 ctxp->cpu = id; /* Setup cpu for cmpl check */ 976 } 977 #endif 978 979 /* Sanity check */ 980 if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) || 981 (ctxp->state == LPFC_NVMET_STE_ABORT)) { 982 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 983 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 984 "6102 IO oxid x%x aborted\n", 985 ctxp->oxid); 986 rc = -ENXIO; 987 goto aerr; 988 } 989 990 nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); 991 if (nvmewqeq == NULL) { 992 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 993 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 994 "6152 FCP Drop IO x%x: Prep\n", 995 ctxp->oxid); 996 rc = -ENXIO; 997 goto aerr; 998 } 999 1000 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; 1001 nvmewqeq->iocb_cmpl = NULL; 1002 nvmewqeq->context2 = ctxp; 1003 nvmewqeq->iocb_flag |= LPFC_IO_NVMET; 1004 ctxp->wqeq->hba_wqidx = rsp->hwqid; 1005 1006 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n", 1007 ctxp->oxid, rsp->op, rsp->rsplen); 1008 1009 ctxp->flag |= LPFC_NVMET_IO_INP; 1010 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1011 if (rc == WQE_SUCCESS) { 1012 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1013 if (!ctxp->ts_cmd_nvme) 1014 return 0; 1015 if (rsp->op == NVMET_FCOP_RSP) 1016 ctxp->ts_status_wqput = ktime_get_ns(); 1017 else 1018 ctxp->ts_data_wqput = ktime_get_ns(); 1019 #endif 1020 return 0; 1021 } 1022 1023 if (rc == -EBUSY) { 1024 /* 1025 * WQ was full, so queue nvmewqeq to be sent after 1026 * WQE release CQE 1027 */ 1028 ctxp->flag |= LPFC_NVMET_DEFER_WQFULL; 1029 wq = ctxp->hdwq->io_wq; 1030 pring = wq->pring; 1031 spin_lock_irqsave(&pring->ring_lock, iflags); 1032 list_add_tail(&nvmewqeq->list, &wq->wqfull_list); 1033 wq->q_flag |= HBA_NVMET_WQFULL; 1034 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1035 atomic_inc(&lpfc_nvmep->defer_wqfull); 1036 return 0; 1037 } 1038 1039 /* Give back resources */ 1040 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1041 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1042 "6153 FCP Drop IO x%x: Issue: %d\n", 1043 ctxp->oxid, rc); 1044 1045 ctxp->wqeq->hba_wqidx = 0; 1046 nvmewqeq->context2 = NULL; 1047 nvmewqeq->context3 = NULL; 1048 rc = -EBUSY; 1049 aerr: 1050 return rc; 1051 } 1052 1053 static void 1054 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) 1055 { 1056 struct lpfc_nvmet_tgtport *tport = targetport->private; 1057 1058 /* release any threads waiting for the unreg to complete */ 1059 if (tport->phba->targetport) 1060 complete(tport->tport_unreg_cmp); 1061 } 1062 1063 static void 1064 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport, 1065 struct nvmefc_tgt_fcp_req *req) 1066 { 1067 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1068 struct lpfc_nvmet_rcv_ctx *ctxp = 1069 container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1070 struct lpfc_hba *phba = ctxp->phba; 1071 struct lpfc_queue *wq; 1072 unsigned long flags; 1073 1074 if (phba->pport->load_flag & FC_UNLOADING) 1075 return; 1076 1077 if (phba->pport->load_flag & FC_UNLOADING) 1078 return; 1079 1080 if (!ctxp->hdwq) 1081 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1082 1083 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1084 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n", 1085 ctxp->oxid, ctxp->flag, ctxp->state); 1086 1087 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n", 1088 ctxp->oxid, ctxp->flag, ctxp->state); 1089 1090 atomic_inc(&lpfc_nvmep->xmt_fcp_abort); 1091 1092 spin_lock_irqsave(&ctxp->ctxlock, flags); 1093 1094 /* Since iaab/iaar are NOT set, we need to check 1095 * if the firmware is in process of aborting IO 1096 */ 1097 if (ctxp->flag & (LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP)) { 1098 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1099 return; 1100 } 1101 ctxp->flag |= LPFC_NVMET_ABORT_OP; 1102 1103 if (ctxp->flag & LPFC_NVMET_DEFER_WQFULL) { 1104 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1105 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1106 ctxp->oxid); 1107 wq = ctxp->hdwq->io_wq; 1108 lpfc_nvmet_wqfull_flush(phba, wq, ctxp); 1109 return; 1110 } 1111 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1112 1113 /* An state of LPFC_NVMET_STE_RCV means we have just received 1114 * the NVME command and have not started processing it. 1115 * (by issuing any IO WQEs on this exchange yet) 1116 */ 1117 if (ctxp->state == LPFC_NVMET_STE_RCV) 1118 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1119 ctxp->oxid); 1120 else 1121 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1122 ctxp->oxid); 1123 } 1124 1125 static void 1126 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport, 1127 struct nvmefc_tgt_fcp_req *rsp) 1128 { 1129 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1130 struct lpfc_nvmet_rcv_ctx *ctxp = 1131 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1132 struct lpfc_hba *phba = ctxp->phba; 1133 unsigned long flags; 1134 bool aborting = false; 1135 1136 spin_lock_irqsave(&ctxp->ctxlock, flags); 1137 if (ctxp->flag & LPFC_NVMET_XBUSY) 1138 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1139 "6027 NVMET release with XBUSY flag x%x" 1140 " oxid x%x\n", 1141 ctxp->flag, ctxp->oxid); 1142 else if (ctxp->state != LPFC_NVMET_STE_DONE && 1143 ctxp->state != LPFC_NVMET_STE_ABORT) 1144 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1145 "6413 NVMET release bad state %d %d oxid x%x\n", 1146 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 1147 1148 if ((ctxp->flag & LPFC_NVMET_ABORT_OP) || 1149 (ctxp->flag & LPFC_NVMET_XBUSY)) { 1150 aborting = true; 1151 /* let the abort path do the real release */ 1152 lpfc_nvmet_defer_release(phba, ctxp); 1153 } 1154 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1155 1156 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid, 1157 ctxp->state, aborting); 1158 1159 atomic_inc(&lpfc_nvmep->xmt_fcp_release); 1160 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 1161 1162 if (aborting) 1163 return; 1164 1165 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1166 } 1167 1168 static void 1169 lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport, 1170 struct nvmefc_tgt_fcp_req *rsp) 1171 { 1172 struct lpfc_nvmet_tgtport *tgtp; 1173 struct lpfc_nvmet_rcv_ctx *ctxp = 1174 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1175 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 1176 struct lpfc_hba *phba = ctxp->phba; 1177 unsigned long iflag; 1178 1179 1180 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n", 1181 ctxp->oxid, ctxp->size, raw_smp_processor_id()); 1182 1183 if (!nvmebuf) { 1184 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1185 "6425 Defer rcv: no buffer oxid x%x: " 1186 "flg %x ste %x\n", 1187 ctxp->oxid, ctxp->flag, ctxp->state); 1188 return; 1189 } 1190 1191 tgtp = phba->targetport->private; 1192 if (tgtp) 1193 atomic_inc(&tgtp->rcv_fcp_cmd_defer); 1194 1195 /* Free the nvmebuf since a new buffer already replaced it */ 1196 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1197 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1198 ctxp->rqb_buffer = NULL; 1199 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1200 } 1201 1202 static void 1203 lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport) 1204 { 1205 struct lpfc_nvmet_tgtport *tgtp; 1206 struct lpfc_hba *phba; 1207 uint32_t rc; 1208 1209 tgtp = tgtport->private; 1210 phba = tgtp->phba; 1211 1212 rc = lpfc_issue_els_rscn(phba->pport, 0); 1213 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1214 "6420 NVMET subsystem change: Notification %s\n", 1215 (rc) ? "Failed" : "Sent"); 1216 } 1217 1218 static struct nvmet_fc_target_template lpfc_tgttemplate = { 1219 .targetport_delete = lpfc_nvmet_targetport_delete, 1220 .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp, 1221 .fcp_op = lpfc_nvmet_xmt_fcp_op, 1222 .fcp_abort = lpfc_nvmet_xmt_fcp_abort, 1223 .fcp_req_release = lpfc_nvmet_xmt_fcp_release, 1224 .defer_rcv = lpfc_nvmet_defer_rcv, 1225 .discovery_event = lpfc_nvmet_discovery_event, 1226 1227 .max_hw_queues = 1, 1228 .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1229 .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1230 .dma_boundary = 0xFFFFFFFF, 1231 1232 /* optional features */ 1233 .target_features = 0, 1234 /* sizes of additional private data for data structures */ 1235 .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), 1236 }; 1237 1238 static void 1239 __lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba, 1240 struct lpfc_nvmet_ctx_info *infop) 1241 { 1242 struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf; 1243 unsigned long flags; 1244 1245 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags); 1246 list_for_each_entry_safe(ctx_buf, next_ctx_buf, 1247 &infop->nvmet_ctx_list, list) { 1248 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1249 list_del_init(&ctx_buf->list); 1250 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1251 1252 __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag); 1253 ctx_buf->sglq->state = SGL_FREED; 1254 ctx_buf->sglq->ndlp = NULL; 1255 1256 spin_lock(&phba->sli4_hba.sgl_list_lock); 1257 list_add_tail(&ctx_buf->sglq->list, 1258 &phba->sli4_hba.lpfc_nvmet_sgl_list); 1259 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1260 1261 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1262 kfree(ctx_buf->context); 1263 } 1264 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags); 1265 } 1266 1267 static void 1268 lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba) 1269 { 1270 struct lpfc_nvmet_ctx_info *infop; 1271 int i, j; 1272 1273 /* The first context list, MRQ 0 CPU 0 */ 1274 infop = phba->sli4_hba.nvmet_ctx_info; 1275 if (!infop) 1276 return; 1277 1278 /* Cycle the the entire CPU context list for every MRQ */ 1279 for (i = 0; i < phba->cfg_nvmet_mrq; i++) { 1280 for_each_present_cpu(j) { 1281 infop = lpfc_get_ctx_list(phba, j, i); 1282 __lpfc_nvmet_clean_io_for_cpu(phba, infop); 1283 } 1284 } 1285 kfree(phba->sli4_hba.nvmet_ctx_info); 1286 phba->sli4_hba.nvmet_ctx_info = NULL; 1287 } 1288 1289 static int 1290 lpfc_nvmet_setup_io_context(struct lpfc_hba *phba) 1291 { 1292 struct lpfc_nvmet_ctxbuf *ctx_buf; 1293 struct lpfc_iocbq *nvmewqe; 1294 union lpfc_wqe128 *wqe; 1295 struct lpfc_nvmet_ctx_info *last_infop; 1296 struct lpfc_nvmet_ctx_info *infop; 1297 int i, j, idx, cpu; 1298 1299 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1300 "6403 Allocate NVMET resources for %d XRIs\n", 1301 phba->sli4_hba.nvmet_xri_cnt); 1302 1303 phba->sli4_hba.nvmet_ctx_info = kcalloc( 1304 phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq, 1305 sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL); 1306 if (!phba->sli4_hba.nvmet_ctx_info) { 1307 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1308 "6419 Failed allocate memory for " 1309 "nvmet context lists\n"); 1310 return -ENOMEM; 1311 } 1312 1313 /* 1314 * Assuming X CPUs in the system, and Y MRQs, allocate some 1315 * lpfc_nvmet_ctx_info structures as follows: 1316 * 1317 * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0 1318 * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1 1319 * ... 1320 * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY 1321 * 1322 * Each line represents a MRQ "silo" containing an entry for 1323 * every CPU. 1324 * 1325 * MRQ X is initially assumed to be associated with CPU X, thus 1326 * contexts are initially distributed across all MRQs using 1327 * the MRQ index (N) as follows cpuN/mrqN. When contexts are 1328 * freed, the are freed to the MRQ silo based on the CPU number 1329 * of the IO completion. Thus a context that was allocated for MRQ A 1330 * whose IO completed on CPU B will be freed to cpuB/mrqA. 1331 */ 1332 for_each_possible_cpu(i) { 1333 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1334 infop = lpfc_get_ctx_list(phba, i, j); 1335 INIT_LIST_HEAD(&infop->nvmet_ctx_list); 1336 spin_lock_init(&infop->nvmet_ctx_list_lock); 1337 infop->nvmet_ctx_list_cnt = 0; 1338 } 1339 } 1340 1341 /* 1342 * Setup the next CPU context info ptr for each MRQ. 1343 * MRQ 0 will cycle thru CPUs 0 - X separately from 1344 * MRQ 1 cycling thru CPUs 0 - X, and so on. 1345 */ 1346 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1347 last_infop = lpfc_get_ctx_list(phba, 1348 cpumask_first(cpu_present_mask), 1349 j); 1350 for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) { 1351 infop = lpfc_get_ctx_list(phba, i, j); 1352 infop->nvmet_ctx_next_cpu = last_infop; 1353 last_infop = infop; 1354 } 1355 } 1356 1357 /* For all nvmet xris, allocate resources needed to process a 1358 * received command on a per xri basis. 1359 */ 1360 idx = 0; 1361 cpu = cpumask_first(cpu_present_mask); 1362 for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) { 1363 ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL); 1364 if (!ctx_buf) { 1365 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1366 "6404 Ran out of memory for NVMET\n"); 1367 return -ENOMEM; 1368 } 1369 1370 ctx_buf->context = kzalloc(sizeof(*ctx_buf->context), 1371 GFP_KERNEL); 1372 if (!ctx_buf->context) { 1373 kfree(ctx_buf); 1374 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1375 "6405 Ran out of NVMET " 1376 "context memory\n"); 1377 return -ENOMEM; 1378 } 1379 ctx_buf->context->ctxbuf = ctx_buf; 1380 ctx_buf->context->state = LPFC_NVMET_STE_FREE; 1381 1382 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba); 1383 if (!ctx_buf->iocbq) { 1384 kfree(ctx_buf->context); 1385 kfree(ctx_buf); 1386 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1387 "6406 Ran out of NVMET iocb/WQEs\n"); 1388 return -ENOMEM; 1389 } 1390 ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET; 1391 nvmewqe = ctx_buf->iocbq; 1392 wqe = &nvmewqe->wqe; 1393 1394 /* Initialize WQE */ 1395 memset(wqe, 0, sizeof(union lpfc_wqe)); 1396 1397 ctx_buf->iocbq->context1 = NULL; 1398 spin_lock(&phba->sli4_hba.sgl_list_lock); 1399 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq); 1400 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1401 if (!ctx_buf->sglq) { 1402 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1403 kfree(ctx_buf->context); 1404 kfree(ctx_buf); 1405 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1406 "6407 Ran out of NVMET XRIs\n"); 1407 return -ENOMEM; 1408 } 1409 INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work); 1410 1411 /* 1412 * Add ctx to MRQidx context list. Our initial assumption 1413 * is MRQidx will be associated with CPUidx. This association 1414 * can change on the fly. 1415 */ 1416 infop = lpfc_get_ctx_list(phba, cpu, idx); 1417 spin_lock(&infop->nvmet_ctx_list_lock); 1418 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 1419 infop->nvmet_ctx_list_cnt++; 1420 spin_unlock(&infop->nvmet_ctx_list_lock); 1421 1422 /* Spread ctx structures evenly across all MRQs */ 1423 idx++; 1424 if (idx >= phba->cfg_nvmet_mrq) { 1425 idx = 0; 1426 cpu = cpumask_first(cpu_present_mask); 1427 continue; 1428 } 1429 cpu = cpumask_next(cpu, cpu_present_mask); 1430 if (cpu == nr_cpu_ids) 1431 cpu = cpumask_first(cpu_present_mask); 1432 1433 } 1434 1435 for_each_present_cpu(i) { 1436 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1437 infop = lpfc_get_ctx_list(phba, i, j); 1438 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT, 1439 "6408 TOTAL NVMET ctx for CPU %d " 1440 "MRQ %d: cnt %d nextcpu x%px\n", 1441 i, j, infop->nvmet_ctx_list_cnt, 1442 infop->nvmet_ctx_next_cpu); 1443 } 1444 } 1445 return 0; 1446 } 1447 1448 int 1449 lpfc_nvmet_create_targetport(struct lpfc_hba *phba) 1450 { 1451 struct lpfc_vport *vport = phba->pport; 1452 struct lpfc_nvmet_tgtport *tgtp; 1453 struct nvmet_fc_port_info pinfo; 1454 int error; 1455 1456 if (phba->targetport) 1457 return 0; 1458 1459 error = lpfc_nvmet_setup_io_context(phba); 1460 if (error) 1461 return error; 1462 1463 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); 1464 pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 1465 pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 1466 pinfo.port_id = vport->fc_myDID; 1467 1468 /* We need to tell the transport layer + 1 because it takes page 1469 * alignment into account. When space for the SGL is allocated we 1470 * allocate + 3, one for cmd, one for rsp and one for this alignment 1471 */ 1472 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 1473 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue; 1474 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; 1475 1476 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1477 error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, 1478 &phba->pcidev->dev, 1479 &phba->targetport); 1480 #else 1481 error = -ENOENT; 1482 #endif 1483 if (error) { 1484 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 1485 "6025 Cannot register NVME targetport x%x: " 1486 "portnm %llx nodenm %llx segs %d qs %d\n", 1487 error, 1488 pinfo.port_name, pinfo.node_name, 1489 lpfc_tgttemplate.max_sgl_segments, 1490 lpfc_tgttemplate.max_hw_queues); 1491 phba->targetport = NULL; 1492 phba->nvmet_support = 0; 1493 1494 lpfc_nvmet_cleanup_io_context(phba); 1495 1496 } else { 1497 tgtp = (struct lpfc_nvmet_tgtport *) 1498 phba->targetport->private; 1499 tgtp->phba = phba; 1500 1501 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 1502 "6026 Registered NVME " 1503 "targetport: x%px, private x%px " 1504 "portnm %llx nodenm %llx segs %d qs %d\n", 1505 phba->targetport, tgtp, 1506 pinfo.port_name, pinfo.node_name, 1507 lpfc_tgttemplate.max_sgl_segments, 1508 lpfc_tgttemplate.max_hw_queues); 1509 1510 atomic_set(&tgtp->rcv_ls_req_in, 0); 1511 atomic_set(&tgtp->rcv_ls_req_out, 0); 1512 atomic_set(&tgtp->rcv_ls_req_drop, 0); 1513 atomic_set(&tgtp->xmt_ls_abort, 0); 1514 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0); 1515 atomic_set(&tgtp->xmt_ls_rsp, 0); 1516 atomic_set(&tgtp->xmt_ls_drop, 0); 1517 atomic_set(&tgtp->xmt_ls_rsp_error, 0); 1518 atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0); 1519 atomic_set(&tgtp->xmt_ls_rsp_aborted, 0); 1520 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); 1521 atomic_set(&tgtp->rcv_fcp_cmd_in, 0); 1522 atomic_set(&tgtp->rcv_fcp_cmd_out, 0); 1523 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); 1524 atomic_set(&tgtp->xmt_fcp_drop, 0); 1525 atomic_set(&tgtp->xmt_fcp_read_rsp, 0); 1526 atomic_set(&tgtp->xmt_fcp_read, 0); 1527 atomic_set(&tgtp->xmt_fcp_write, 0); 1528 atomic_set(&tgtp->xmt_fcp_rsp, 0); 1529 atomic_set(&tgtp->xmt_fcp_release, 0); 1530 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); 1531 atomic_set(&tgtp->xmt_fcp_rsp_error, 0); 1532 atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0); 1533 atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0); 1534 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); 1535 atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0); 1536 atomic_set(&tgtp->xmt_fcp_abort, 0); 1537 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0); 1538 atomic_set(&tgtp->xmt_abort_unsol, 0); 1539 atomic_set(&tgtp->xmt_abort_sol, 0); 1540 atomic_set(&tgtp->xmt_abort_rsp, 0); 1541 atomic_set(&tgtp->xmt_abort_rsp_error, 0); 1542 atomic_set(&tgtp->defer_ctx, 0); 1543 atomic_set(&tgtp->defer_fod, 0); 1544 atomic_set(&tgtp->defer_wqfull, 0); 1545 } 1546 return error; 1547 } 1548 1549 int 1550 lpfc_nvmet_update_targetport(struct lpfc_hba *phba) 1551 { 1552 struct lpfc_vport *vport = phba->pport; 1553 1554 if (!phba->targetport) 1555 return 0; 1556 1557 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1558 "6007 Update NVMET port x%px did x%x\n", 1559 phba->targetport, vport->fc_myDID); 1560 1561 phba->targetport->port_id = vport->fc_myDID; 1562 return 0; 1563 } 1564 1565 /** 1566 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort 1567 * @phba: pointer to lpfc hba data structure. 1568 * @axri: pointer to the nvmet xri abort wcqe structure. 1569 * 1570 * This routine is invoked by the worker thread to process a SLI4 fast-path 1571 * NVMET aborted xri. 1572 **/ 1573 void 1574 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba, 1575 struct sli4_wcqe_xri_aborted *axri) 1576 { 1577 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1578 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 1579 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 1580 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1581 struct lpfc_nvmet_tgtport *tgtp; 1582 struct nvmefc_tgt_fcp_req *req = NULL; 1583 struct lpfc_nodelist *ndlp; 1584 unsigned long iflag = 0; 1585 int rrq_empty = 0; 1586 bool released = false; 1587 1588 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1589 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid); 1590 1591 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 1592 return; 1593 1594 if (phba->targetport) { 1595 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1596 atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe); 1597 } 1598 1599 spin_lock_irqsave(&phba->hbalock, iflag); 1600 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1601 list_for_each_entry_safe(ctxp, next_ctxp, 1602 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1603 list) { 1604 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 1605 continue; 1606 1607 spin_lock(&ctxp->ctxlock); 1608 /* Check if we already received a free context call 1609 * and we have completed processing an abort situation. 1610 */ 1611 if (ctxp->flag & LPFC_NVMET_CTX_RLS && 1612 !(ctxp->flag & LPFC_NVMET_ABORT_OP)) { 1613 list_del_init(&ctxp->list); 1614 released = true; 1615 } 1616 ctxp->flag &= ~LPFC_NVMET_XBUSY; 1617 spin_unlock(&ctxp->ctxlock); 1618 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1619 1620 rrq_empty = list_empty(&phba->active_rrq_list); 1621 spin_unlock_irqrestore(&phba->hbalock, iflag); 1622 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 1623 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 1624 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 1625 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 1626 lpfc_set_rrq_active(phba, ndlp, 1627 ctxp->ctxbuf->sglq->sli4_lxritag, 1628 rxid, 1); 1629 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 1630 } 1631 1632 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1633 "6318 XB aborted oxid x%x flg x%x (%x)\n", 1634 ctxp->oxid, ctxp->flag, released); 1635 if (released) 1636 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1637 1638 if (rrq_empty) 1639 lpfc_worker_wake_up(phba); 1640 return; 1641 } 1642 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1643 spin_unlock_irqrestore(&phba->hbalock, iflag); 1644 1645 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri); 1646 if (ctxp) { 1647 /* 1648 * Abort already done by FW, so BA_ACC sent. 1649 * However, the transport may be unaware. 1650 */ 1651 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1652 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x " 1653 "flag x%x oxid x%x rxid x%x\n", 1654 xri, ctxp->state, ctxp->flag, ctxp->oxid, 1655 rxid); 1656 1657 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1658 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1659 ctxp->state = LPFC_NVMET_STE_ABORT; 1660 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1661 1662 lpfc_nvmeio_data(phba, 1663 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1664 xri, raw_smp_processor_id(), 0); 1665 1666 req = &ctxp->ctx.fcp_req; 1667 if (req) 1668 nvmet_fc_rcv_fcp_abort(phba->targetport, req); 1669 } 1670 #endif 1671 } 1672 1673 int 1674 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport, 1675 struct fc_frame_header *fc_hdr) 1676 { 1677 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1678 struct lpfc_hba *phba = vport->phba; 1679 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1680 struct nvmefc_tgt_fcp_req *rsp; 1681 uint32_t sid; 1682 uint16_t oxid, xri; 1683 unsigned long iflag = 0; 1684 1685 sid = sli4_sid_from_fc_hdr(fc_hdr); 1686 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1687 1688 spin_lock_irqsave(&phba->hbalock, iflag); 1689 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1690 list_for_each_entry_safe(ctxp, next_ctxp, 1691 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1692 list) { 1693 if (ctxp->oxid != oxid || ctxp->sid != sid) 1694 continue; 1695 1696 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1697 1698 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1699 spin_unlock_irqrestore(&phba->hbalock, iflag); 1700 1701 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1702 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1703 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1704 1705 lpfc_nvmeio_data(phba, 1706 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1707 xri, raw_smp_processor_id(), 0); 1708 1709 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1710 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri); 1711 1712 rsp = &ctxp->ctx.fcp_req; 1713 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp); 1714 1715 /* Respond with BA_ACC accordingly */ 1716 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1717 return 0; 1718 } 1719 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1720 spin_unlock_irqrestore(&phba->hbalock, iflag); 1721 1722 /* check the wait list */ 1723 if (phba->sli4_hba.nvmet_io_wait_cnt) { 1724 struct rqb_dmabuf *nvmebuf; 1725 struct fc_frame_header *fc_hdr_tmp; 1726 u32 sid_tmp; 1727 u16 oxid_tmp; 1728 bool found = false; 1729 1730 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 1731 1732 /* match by oxid and s_id */ 1733 list_for_each_entry(nvmebuf, 1734 &phba->sli4_hba.lpfc_nvmet_io_wait_list, 1735 hbuf.list) { 1736 fc_hdr_tmp = (struct fc_frame_header *) 1737 (nvmebuf->hbuf.virt); 1738 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id); 1739 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp); 1740 if (oxid_tmp != oxid || sid_tmp != sid) 1741 continue; 1742 1743 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1744 "6321 NVMET Rcv ABTS oxid x%x from x%x " 1745 "is waiting for a ctxp\n", 1746 oxid, sid); 1747 1748 list_del_init(&nvmebuf->hbuf.list); 1749 phba->sli4_hba.nvmet_io_wait_cnt--; 1750 found = true; 1751 break; 1752 } 1753 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 1754 iflag); 1755 1756 /* free buffer since already posted a new DMA buffer to RQ */ 1757 if (found) { 1758 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1759 /* Respond with BA_ACC accordingly */ 1760 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1761 return 0; 1762 } 1763 } 1764 1765 /* check active list */ 1766 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid); 1767 if (ctxp) { 1768 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1769 1770 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1771 ctxp->flag |= (LPFC_NVMET_ABTS_RCV | LPFC_NVMET_ABORT_OP); 1772 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1773 1774 lpfc_nvmeio_data(phba, 1775 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1776 xri, raw_smp_processor_id(), 0); 1777 1778 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1779 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x " 1780 "flag x%x state x%x\n", 1781 ctxp->oxid, xri, ctxp->flag, ctxp->state); 1782 1783 if (ctxp->flag & LPFC_NVMET_TNOTIFY) { 1784 /* Notify the transport */ 1785 nvmet_fc_rcv_fcp_abort(phba->targetport, 1786 &ctxp->ctx.fcp_req); 1787 } else { 1788 cancel_work_sync(&ctxp->ctxbuf->defer_work); 1789 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1790 lpfc_nvmet_defer_release(phba, ctxp); 1791 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1792 } 1793 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1794 ctxp->oxid); 1795 1796 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1797 return 0; 1798 } 1799 1800 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n", 1801 oxid, raw_smp_processor_id(), 1); 1802 1803 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1804 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid); 1805 1806 /* Respond with BA_RJT accordingly */ 1807 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0); 1808 #endif 1809 return 0; 1810 } 1811 1812 static void 1813 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq, 1814 struct lpfc_nvmet_rcv_ctx *ctxp) 1815 { 1816 struct lpfc_sli_ring *pring; 1817 struct lpfc_iocbq *nvmewqeq; 1818 struct lpfc_iocbq *next_nvmewqeq; 1819 unsigned long iflags; 1820 struct lpfc_wcqe_complete wcqe; 1821 struct lpfc_wcqe_complete *wcqep; 1822 1823 pring = wq->pring; 1824 wcqep = &wcqe; 1825 1826 /* Fake an ABORT error code back to cmpl routine */ 1827 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete)); 1828 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT); 1829 wcqep->parameter = IOERR_ABORT_REQUESTED; 1830 1831 spin_lock_irqsave(&pring->ring_lock, iflags); 1832 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq, 1833 &wq->wqfull_list, list) { 1834 if (ctxp) { 1835 /* Checking for a specific IO to flush */ 1836 if (nvmewqeq->context2 == ctxp) { 1837 list_del(&nvmewqeq->list); 1838 spin_unlock_irqrestore(&pring->ring_lock, 1839 iflags); 1840 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, 1841 wcqep); 1842 return; 1843 } 1844 continue; 1845 } else { 1846 /* Flush all IOs */ 1847 list_del(&nvmewqeq->list); 1848 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1849 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, wcqep); 1850 spin_lock_irqsave(&pring->ring_lock, iflags); 1851 } 1852 } 1853 if (!ctxp) 1854 wq->q_flag &= ~HBA_NVMET_WQFULL; 1855 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1856 } 1857 1858 void 1859 lpfc_nvmet_wqfull_process(struct lpfc_hba *phba, 1860 struct lpfc_queue *wq) 1861 { 1862 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1863 struct lpfc_sli_ring *pring; 1864 struct lpfc_iocbq *nvmewqeq; 1865 struct lpfc_nvmet_rcv_ctx *ctxp; 1866 unsigned long iflags; 1867 int rc; 1868 1869 /* 1870 * Some WQE slots are available, so try to re-issue anything 1871 * on the WQ wqfull_list. 1872 */ 1873 pring = wq->pring; 1874 spin_lock_irqsave(&pring->ring_lock, iflags); 1875 while (!list_empty(&wq->wqfull_list)) { 1876 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq, 1877 list); 1878 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1879 ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmewqeq->context2; 1880 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1881 spin_lock_irqsave(&pring->ring_lock, iflags); 1882 if (rc == -EBUSY) { 1883 /* WQ was full again, so put it back on the list */ 1884 list_add(&nvmewqeq->list, &wq->wqfull_list); 1885 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1886 return; 1887 } 1888 if (rc == WQE_SUCCESS) { 1889 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1890 if (ctxp->ts_cmd_nvme) { 1891 if (ctxp->ctx.fcp_req.op == NVMET_FCOP_RSP) 1892 ctxp->ts_status_wqput = ktime_get_ns(); 1893 else 1894 ctxp->ts_data_wqput = ktime_get_ns(); 1895 } 1896 #endif 1897 } else { 1898 WARN_ON(rc); 1899 } 1900 } 1901 wq->q_flag &= ~HBA_NVMET_WQFULL; 1902 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1903 1904 #endif 1905 } 1906 1907 void 1908 lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) 1909 { 1910 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1911 struct lpfc_nvmet_tgtport *tgtp; 1912 struct lpfc_queue *wq; 1913 uint32_t qidx; 1914 DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp); 1915 1916 if (phba->nvmet_support == 0) 1917 return; 1918 if (phba->targetport) { 1919 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1920 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) { 1921 wq = phba->sli4_hba.hdwq[qidx].io_wq; 1922 lpfc_nvmet_wqfull_flush(phba, wq, NULL); 1923 } 1924 tgtp->tport_unreg_cmp = &tport_unreg_cmp; 1925 nvmet_fc_unregister_targetport(phba->targetport); 1926 if (!wait_for_completion_timeout(tgtp->tport_unreg_cmp, 1927 msecs_to_jiffies(LPFC_NVMET_WAIT_TMO))) 1928 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1929 "6179 Unreg targetport x%px timeout " 1930 "reached.\n", phba->targetport); 1931 lpfc_nvmet_cleanup_io_context(phba); 1932 } 1933 phba->targetport = NULL; 1934 #endif 1935 } 1936 1937 /** 1938 * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer 1939 * @phba: pointer to lpfc hba data structure. 1940 * @pring: pointer to a SLI ring. 1941 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 1942 * 1943 * This routine is used for processing the WQE associated with a unsolicited 1944 * event. It first determines whether there is an existing ndlp that matches 1945 * the DID from the unsolicited WQE. If not, it will create a new one with 1946 * the DID from the unsolicited WQE. The ELS command from the unsolicited 1947 * WQE is then used to invoke the proper routine and to set up proper state 1948 * of the discovery state machine. 1949 **/ 1950 static void 1951 lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 1952 struct hbq_dmabuf *nvmebuf) 1953 { 1954 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1955 struct lpfc_nvmet_tgtport *tgtp; 1956 struct fc_frame_header *fc_hdr; 1957 struct lpfc_nvmet_rcv_ctx *ctxp; 1958 uint32_t *payload; 1959 uint32_t size, oxid, sid, rc; 1960 1961 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 1962 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1963 1964 if (!phba->targetport) { 1965 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1966 "6154 LS Drop IO x%x\n", oxid); 1967 oxid = 0; 1968 size = 0; 1969 sid = 0; 1970 ctxp = NULL; 1971 goto dropit; 1972 } 1973 1974 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1975 payload = (uint32_t *)(nvmebuf->dbuf.virt); 1976 size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl); 1977 sid = sli4_sid_from_fc_hdr(fc_hdr); 1978 1979 ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC); 1980 if (ctxp == NULL) { 1981 atomic_inc(&tgtp->rcv_ls_req_drop); 1982 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1983 "6155 LS Drop IO x%x: Alloc\n", 1984 oxid); 1985 dropit: 1986 lpfc_nvmeio_data(phba, "NVMET LS DROP: " 1987 "xri x%x sz %d from %06x\n", 1988 oxid, size, sid); 1989 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 1990 return; 1991 } 1992 ctxp->phba = phba; 1993 ctxp->size = size; 1994 ctxp->oxid = oxid; 1995 ctxp->sid = sid; 1996 ctxp->wqeq = NULL; 1997 ctxp->state = LPFC_NVMET_STE_LS_RCV; 1998 ctxp->entry_cnt = 1; 1999 ctxp->rqb_buffer = (void *)nvmebuf; 2000 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 2001 2002 lpfc_nvmeio_data(phba, "NVMET LS RCV: xri x%x sz %d from %06x\n", 2003 oxid, size, sid); 2004 /* 2005 * The calling sequence should be: 2006 * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done 2007 * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp. 2008 */ 2009 atomic_inc(&tgtp->rcv_ls_req_in); 2010 rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req, 2011 payload, size); 2012 2013 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2014 "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x " 2015 "%08x %08x %08x\n", size, rc, 2016 *payload, *(payload+1), *(payload+2), 2017 *(payload+3), *(payload+4), *(payload+5)); 2018 2019 if (rc == 0) { 2020 atomic_inc(&tgtp->rcv_ls_req_out); 2021 return; 2022 } 2023 2024 lpfc_nvmeio_data(phba, "NVMET LS DROP: xri x%x sz %d from %06x\n", 2025 oxid, size, sid); 2026 2027 atomic_inc(&tgtp->rcv_ls_req_drop); 2028 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2029 "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n", 2030 ctxp->oxid, rc); 2031 2032 /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */ 2033 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2034 2035 atomic_inc(&tgtp->xmt_ls_abort); 2036 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid); 2037 #endif 2038 } 2039 2040 static void 2041 lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf) 2042 { 2043 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2044 struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context; 2045 struct lpfc_hba *phba = ctxp->phba; 2046 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 2047 struct lpfc_nvmet_tgtport *tgtp; 2048 uint32_t *payload, qno; 2049 uint32_t rc; 2050 unsigned long iflags; 2051 2052 if (!nvmebuf) { 2053 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2054 "6159 process_rcv_fcp_req, nvmebuf is NULL, " 2055 "oxid: x%x flg: x%x state: x%x\n", 2056 ctxp->oxid, ctxp->flag, ctxp->state); 2057 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2058 lpfc_nvmet_defer_release(phba, ctxp); 2059 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2060 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 2061 ctxp->oxid); 2062 return; 2063 } 2064 2065 if (ctxp->flag & LPFC_NVMET_ABTS_RCV) { 2066 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2067 "6324 IO oxid x%x aborted\n", 2068 ctxp->oxid); 2069 return; 2070 } 2071 2072 payload = (uint32_t *)(nvmebuf->dbuf.virt); 2073 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2074 ctxp->flag |= LPFC_NVMET_TNOTIFY; 2075 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2076 if (ctxp->ts_isr_cmd) 2077 ctxp->ts_cmd_nvme = ktime_get_ns(); 2078 #endif 2079 /* 2080 * The calling sequence should be: 2081 * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done 2082 * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. 2083 * When we return from nvmet_fc_rcv_fcp_req, all relevant info 2084 * the NVME command / FC header is stored. 2085 * A buffer has already been reposted for this IO, so just free 2086 * the nvmebuf. 2087 */ 2088 rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req, 2089 payload, ctxp->size); 2090 /* Process FCP command */ 2091 if (rc == 0) { 2092 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2093 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2094 if ((ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) || 2095 (nvmebuf != ctxp->rqb_buffer)) { 2096 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2097 return; 2098 } 2099 ctxp->rqb_buffer = NULL; 2100 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2101 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */ 2102 return; 2103 } 2104 2105 /* Processing of FCP command is deferred */ 2106 if (rc == -EOVERFLOW) { 2107 lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d " 2108 "from %06x\n", 2109 ctxp->oxid, ctxp->size, ctxp->sid); 2110 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2111 atomic_inc(&tgtp->defer_fod); 2112 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2113 if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) { 2114 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2115 return; 2116 } 2117 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2118 /* 2119 * Post a replacement DMA buffer to RQ and defer 2120 * freeing rcv buffer till .defer_rcv callback 2121 */ 2122 qno = nvmebuf->idx; 2123 lpfc_post_rq_buffer( 2124 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2125 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2126 return; 2127 } 2128 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 2129 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2130 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2131 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n", 2132 ctxp->oxid, rc, 2133 atomic_read(&tgtp->rcv_fcp_cmd_in), 2134 atomic_read(&tgtp->rcv_fcp_cmd_out), 2135 atomic_read(&tgtp->xmt_fcp_release)); 2136 lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n", 2137 ctxp->oxid, ctxp->size, ctxp->sid); 2138 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2139 lpfc_nvmet_defer_release(phba, ctxp); 2140 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2141 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 2142 #endif 2143 } 2144 2145 static void 2146 lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work) 2147 { 2148 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2149 struct lpfc_nvmet_ctxbuf *ctx_buf = 2150 container_of(work, struct lpfc_nvmet_ctxbuf, defer_work); 2151 2152 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2153 #endif 2154 } 2155 2156 static struct lpfc_nvmet_ctxbuf * 2157 lpfc_nvmet_replenish_context(struct lpfc_hba *phba, 2158 struct lpfc_nvmet_ctx_info *current_infop) 2159 { 2160 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2161 struct lpfc_nvmet_ctxbuf *ctx_buf = NULL; 2162 struct lpfc_nvmet_ctx_info *get_infop; 2163 int i; 2164 2165 /* 2166 * The current_infop for the MRQ a NVME command IU was received 2167 * on is empty. Our goal is to replenish this MRQs context 2168 * list from a another CPUs. 2169 * 2170 * First we need to pick a context list to start looking on. 2171 * nvmet_ctx_start_cpu has available context the last time 2172 * we needed to replenish this CPU where nvmet_ctx_next_cpu 2173 * is just the next sequential CPU for this MRQ. 2174 */ 2175 if (current_infop->nvmet_ctx_start_cpu) 2176 get_infop = current_infop->nvmet_ctx_start_cpu; 2177 else 2178 get_infop = current_infop->nvmet_ctx_next_cpu; 2179 2180 for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) { 2181 if (get_infop == current_infop) { 2182 get_infop = get_infop->nvmet_ctx_next_cpu; 2183 continue; 2184 } 2185 spin_lock(&get_infop->nvmet_ctx_list_lock); 2186 2187 /* Just take the entire context list, if there are any */ 2188 if (get_infop->nvmet_ctx_list_cnt) { 2189 list_splice_init(&get_infop->nvmet_ctx_list, 2190 ¤t_infop->nvmet_ctx_list); 2191 current_infop->nvmet_ctx_list_cnt = 2192 get_infop->nvmet_ctx_list_cnt - 1; 2193 get_infop->nvmet_ctx_list_cnt = 0; 2194 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2195 2196 current_infop->nvmet_ctx_start_cpu = get_infop; 2197 list_remove_head(¤t_infop->nvmet_ctx_list, 2198 ctx_buf, struct lpfc_nvmet_ctxbuf, 2199 list); 2200 return ctx_buf; 2201 } 2202 2203 /* Otherwise, move on to the next CPU for this MRQ */ 2204 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2205 get_infop = get_infop->nvmet_ctx_next_cpu; 2206 } 2207 2208 #endif 2209 /* Nothing found, all contexts for the MRQ are in-flight */ 2210 return NULL; 2211 } 2212 2213 /** 2214 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer 2215 * @phba: pointer to lpfc hba data structure. 2216 * @idx: relative index of MRQ vector 2217 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 2218 * @isr_timestamp: in jiffies. 2219 * @cqflag: cq processing information regarding workload. 2220 * 2221 * This routine is used for processing the WQE associated with a unsolicited 2222 * event. It first determines whether there is an existing ndlp that matches 2223 * the DID from the unsolicited WQE. If not, it will create a new one with 2224 * the DID from the unsolicited WQE. The ELS command from the unsolicited 2225 * WQE is then used to invoke the proper routine and to set up proper state 2226 * of the discovery state machine. 2227 **/ 2228 static void 2229 lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, 2230 uint32_t idx, 2231 struct rqb_dmabuf *nvmebuf, 2232 uint64_t isr_timestamp, 2233 uint8_t cqflag) 2234 { 2235 struct lpfc_nvmet_rcv_ctx *ctxp; 2236 struct lpfc_nvmet_tgtport *tgtp; 2237 struct fc_frame_header *fc_hdr; 2238 struct lpfc_nvmet_ctxbuf *ctx_buf; 2239 struct lpfc_nvmet_ctx_info *current_infop; 2240 uint32_t size, oxid, sid, qno; 2241 unsigned long iflag; 2242 int current_cpu; 2243 2244 if (!IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2245 return; 2246 2247 ctx_buf = NULL; 2248 if (!nvmebuf || !phba->targetport) { 2249 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2250 "6157 NVMET FCP Drop IO\n"); 2251 if (nvmebuf) 2252 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2253 return; 2254 } 2255 2256 /* 2257 * Get a pointer to the context list for this MRQ based on 2258 * the CPU this MRQ IRQ is associated with. If the CPU association 2259 * changes from our initial assumption, the context list could 2260 * be empty, thus it would need to be replenished with the 2261 * context list from another CPU for this MRQ. 2262 */ 2263 current_cpu = raw_smp_processor_id(); 2264 current_infop = lpfc_get_ctx_list(phba, current_cpu, idx); 2265 spin_lock_irqsave(¤t_infop->nvmet_ctx_list_lock, iflag); 2266 if (current_infop->nvmet_ctx_list_cnt) { 2267 list_remove_head(¤t_infop->nvmet_ctx_list, 2268 ctx_buf, struct lpfc_nvmet_ctxbuf, list); 2269 current_infop->nvmet_ctx_list_cnt--; 2270 } else { 2271 ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop); 2272 } 2273 spin_unlock_irqrestore(¤t_infop->nvmet_ctx_list_lock, iflag); 2274 2275 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 2276 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 2277 size = nvmebuf->bytes_recv; 2278 2279 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2280 if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) { 2281 if (current_cpu < LPFC_CHECK_CPU_CNT) { 2282 if (idx != current_cpu) 2283 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2284 "6703 CPU Check rcv: " 2285 "cpu %d expect %d\n", 2286 current_cpu, idx); 2287 phba->sli4_hba.hdwq[idx].cpucheck_rcv_io[current_cpu]++; 2288 } 2289 } 2290 #endif 2291 2292 lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n", 2293 oxid, size, raw_smp_processor_id()); 2294 2295 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2296 2297 if (!ctx_buf) { 2298 /* Queue this NVME IO to process later */ 2299 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 2300 list_add_tail(&nvmebuf->hbuf.list, 2301 &phba->sli4_hba.lpfc_nvmet_io_wait_list); 2302 phba->sli4_hba.nvmet_io_wait_cnt++; 2303 phba->sli4_hba.nvmet_io_wait_total++; 2304 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 2305 iflag); 2306 2307 /* Post a brand new DMA buffer to RQ */ 2308 qno = nvmebuf->idx; 2309 lpfc_post_rq_buffer( 2310 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2311 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2312 2313 atomic_inc(&tgtp->defer_ctx); 2314 return; 2315 } 2316 2317 sid = sli4_sid_from_fc_hdr(fc_hdr); 2318 2319 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context; 2320 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 2321 list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list); 2322 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 2323 if (ctxp->state != LPFC_NVMET_STE_FREE) { 2324 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2325 "6414 NVMET Context corrupt %d %d oxid x%x\n", 2326 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 2327 } 2328 ctxp->wqeq = NULL; 2329 ctxp->txrdy = NULL; 2330 ctxp->offset = 0; 2331 ctxp->phba = phba; 2332 ctxp->size = size; 2333 ctxp->oxid = oxid; 2334 ctxp->sid = sid; 2335 ctxp->idx = idx; 2336 ctxp->state = LPFC_NVMET_STE_RCV; 2337 ctxp->entry_cnt = 1; 2338 ctxp->flag = 0; 2339 ctxp->ctxbuf = ctx_buf; 2340 ctxp->rqb_buffer = (void *)nvmebuf; 2341 ctxp->hdwq = NULL; 2342 spin_lock_init(&ctxp->ctxlock); 2343 2344 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2345 if (isr_timestamp) 2346 ctxp->ts_isr_cmd = isr_timestamp; 2347 ctxp->ts_cmd_nvme = 0; 2348 ctxp->ts_nvme_data = 0; 2349 ctxp->ts_data_wqput = 0; 2350 ctxp->ts_isr_data = 0; 2351 ctxp->ts_data_nvme = 0; 2352 ctxp->ts_nvme_status = 0; 2353 ctxp->ts_status_wqput = 0; 2354 ctxp->ts_isr_status = 0; 2355 ctxp->ts_status_nvme = 0; 2356 #endif 2357 2358 atomic_inc(&tgtp->rcv_fcp_cmd_in); 2359 /* check for cq processing load */ 2360 if (!cqflag) { 2361 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2362 return; 2363 } 2364 2365 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 2366 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2367 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 2368 "6325 Unable to queue work for oxid x%x. " 2369 "FCP Drop IO [x%x x%x x%x]\n", 2370 ctxp->oxid, 2371 atomic_read(&tgtp->rcv_fcp_cmd_in), 2372 atomic_read(&tgtp->rcv_fcp_cmd_out), 2373 atomic_read(&tgtp->xmt_fcp_release)); 2374 2375 spin_lock_irqsave(&ctxp->ctxlock, iflag); 2376 lpfc_nvmet_defer_release(phba, ctxp); 2377 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 2378 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 2379 } 2380 } 2381 2382 /** 2383 * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport 2384 * @phba: pointer to lpfc hba data structure. 2385 * @pring: pointer to a SLI ring. 2386 * @nvmebuf: pointer to received nvme data structure. 2387 * 2388 * This routine is used to process an unsolicited event received from a SLI 2389 * (Service Level Interface) ring. The actual processing of the data buffer 2390 * associated with the unsolicited event is done by invoking the routine 2391 * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the 2392 * SLI RQ on which the unsolicited event was received. 2393 **/ 2394 void 2395 lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 2396 struct lpfc_iocbq *piocb) 2397 { 2398 struct lpfc_dmabuf *d_buf; 2399 struct hbq_dmabuf *nvmebuf; 2400 2401 d_buf = piocb->context2; 2402 nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf); 2403 2404 if (phba->nvmet_support == 0) { 2405 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2406 return; 2407 } 2408 lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf); 2409 } 2410 2411 /** 2412 * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport 2413 * @phba: pointer to lpfc hba data structure. 2414 * @idx: relative index of MRQ vector 2415 * @nvmebuf: pointer to received nvme data structure. 2416 * @isr_timestamp: in jiffies. 2417 * @cqflag: cq processing information regarding workload. 2418 * 2419 * This routine is used to process an unsolicited event received from a SLI 2420 * (Service Level Interface) ring. The actual processing of the data buffer 2421 * associated with the unsolicited event is done by invoking the routine 2422 * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the 2423 * SLI RQ on which the unsolicited event was received. 2424 **/ 2425 void 2426 lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, 2427 uint32_t idx, 2428 struct rqb_dmabuf *nvmebuf, 2429 uint64_t isr_timestamp, 2430 uint8_t cqflag) 2431 { 2432 if (phba->nvmet_support == 0) { 2433 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2434 return; 2435 } 2436 lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag); 2437 } 2438 2439 /** 2440 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure 2441 * @phba: pointer to a host N_Port data structure. 2442 * @ctxp: Context info for NVME LS Request 2443 * @rspbuf: DMA buffer of NVME command. 2444 * @rspsize: size of the NVME command. 2445 * 2446 * This routine is used for allocating a lpfc-WQE data structure from 2447 * the driver lpfc-WQE free-list and prepare the WQE with the parameters 2448 * passed into the routine for discovery state machine to issue an Extended 2449 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation 2450 * and preparation routine that is used by all the discovery state machine 2451 * routines and the NVME command-specific fields will be later set up by 2452 * the individual discovery machine routines after calling this routine 2453 * allocating and preparing a generic WQE data structure. It fills in the 2454 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 2455 * payload and response payload (if expected). The reference count on the 2456 * ndlp is incremented by 1 and the reference to the ndlp is put into 2457 * context1 of the WQE data structure for this WQE to hold the ndlp 2458 * reference for the command's callback function to access later. 2459 * 2460 * Return code 2461 * Pointer to the newly allocated/prepared nvme wqe data structure 2462 * NULL - when nvme wqe data structure allocation/preparation failed 2463 **/ 2464 static struct lpfc_iocbq * 2465 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, 2466 struct lpfc_nvmet_rcv_ctx *ctxp, 2467 dma_addr_t rspbuf, uint16_t rspsize) 2468 { 2469 struct lpfc_nodelist *ndlp; 2470 struct lpfc_iocbq *nvmewqe; 2471 union lpfc_wqe128 *wqe; 2472 2473 if (!lpfc_is_link_up(phba)) { 2474 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2475 "6104 NVMET prep LS wqe: link err: " 2476 "NPORT x%x oxid:x%x ste %d\n", 2477 ctxp->sid, ctxp->oxid, ctxp->state); 2478 return NULL; 2479 } 2480 2481 /* Allocate buffer for command wqe */ 2482 nvmewqe = lpfc_sli_get_iocbq(phba); 2483 if (nvmewqe == NULL) { 2484 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2485 "6105 NVMET prep LS wqe: No WQE: " 2486 "NPORT x%x oxid x%x ste %d\n", 2487 ctxp->sid, ctxp->oxid, ctxp->state); 2488 return NULL; 2489 } 2490 2491 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2492 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2493 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2494 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2495 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2496 "6106 NVMET prep LS wqe: No ndlp: " 2497 "NPORT x%x oxid x%x ste %d\n", 2498 ctxp->sid, ctxp->oxid, ctxp->state); 2499 goto nvme_wqe_free_wqeq_exit; 2500 } 2501 ctxp->wqeq = nvmewqe; 2502 2503 /* prevent preparing wqe with NULL ndlp reference */ 2504 nvmewqe->context1 = lpfc_nlp_get(ndlp); 2505 if (nvmewqe->context1 == NULL) 2506 goto nvme_wqe_free_wqeq_exit; 2507 nvmewqe->context2 = ctxp; 2508 2509 wqe = &nvmewqe->wqe; 2510 memset(wqe, 0, sizeof(union lpfc_wqe)); 2511 2512 /* Words 0 - 2 */ 2513 wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2514 wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; 2515 wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); 2516 wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); 2517 2518 /* Word 3 */ 2519 2520 /* Word 4 */ 2521 2522 /* Word 5 */ 2523 bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); 2524 bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); 2525 bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); 2526 bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP); 2527 bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); 2528 2529 /* Word 6 */ 2530 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, 2531 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2532 bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); 2533 2534 /* Word 7 */ 2535 bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, 2536 CMD_XMIT_SEQUENCE64_WQE); 2537 bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); 2538 bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); 2539 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); 2540 2541 /* Word 8 */ 2542 wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; 2543 2544 /* Word 9 */ 2545 bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); 2546 /* Needs to be set by caller */ 2547 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); 2548 2549 /* Word 10 */ 2550 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); 2551 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 2552 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, 2553 LPFC_WQE_LENLOC_WORD12); 2554 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); 2555 2556 /* Word 11 */ 2557 bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, 2558 LPFC_WQE_CQ_ID_DEFAULT); 2559 bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, 2560 OTHER_COMMAND); 2561 2562 /* Word 12 */ 2563 wqe->xmit_sequence.xmit_len = rspsize; 2564 2565 nvmewqe->retry = 1; 2566 nvmewqe->vport = phba->pport; 2567 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2568 nvmewqe->iocb_flag |= LPFC_IO_NVME_LS; 2569 2570 /* Xmit NVMET response to remote NPORT <did> */ 2571 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2572 "6039 Xmit NVMET LS response to remote " 2573 "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", 2574 ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, 2575 rspsize); 2576 return nvmewqe; 2577 2578 nvme_wqe_free_wqeq_exit: 2579 nvmewqe->context2 = NULL; 2580 nvmewqe->context3 = NULL; 2581 lpfc_sli_release_iocbq(phba, nvmewqe); 2582 return NULL; 2583 } 2584 2585 2586 static struct lpfc_iocbq * 2587 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, 2588 struct lpfc_nvmet_rcv_ctx *ctxp) 2589 { 2590 struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req; 2591 struct lpfc_nvmet_tgtport *tgtp; 2592 struct sli4_sge *sgl; 2593 struct lpfc_nodelist *ndlp; 2594 struct lpfc_iocbq *nvmewqe; 2595 struct scatterlist *sgel; 2596 union lpfc_wqe128 *wqe; 2597 struct ulp_bde64 *bde; 2598 uint32_t *txrdy; 2599 dma_addr_t physaddr; 2600 int i, cnt; 2601 int do_pbde; 2602 int xc = 1; 2603 2604 if (!lpfc_is_link_up(phba)) { 2605 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2606 "6107 NVMET prep FCP wqe: link err:" 2607 "NPORT x%x oxid x%x ste %d\n", 2608 ctxp->sid, ctxp->oxid, ctxp->state); 2609 return NULL; 2610 } 2611 2612 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2613 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2614 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2615 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2616 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2617 "6108 NVMET prep FCP wqe: no ndlp: " 2618 "NPORT x%x oxid x%x ste %d\n", 2619 ctxp->sid, ctxp->oxid, ctxp->state); 2620 return NULL; 2621 } 2622 2623 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) { 2624 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2625 "6109 NVMET prep FCP wqe: seg cnt err: " 2626 "NPORT x%x oxid x%x ste %d cnt %d\n", 2627 ctxp->sid, ctxp->oxid, ctxp->state, 2628 phba->cfg_nvme_seg_cnt); 2629 return NULL; 2630 } 2631 2632 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2633 nvmewqe = ctxp->wqeq; 2634 if (nvmewqe == NULL) { 2635 /* Allocate buffer for command wqe */ 2636 nvmewqe = ctxp->ctxbuf->iocbq; 2637 if (nvmewqe == NULL) { 2638 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2639 "6110 NVMET prep FCP wqe: No " 2640 "WQE: NPORT x%x oxid x%x ste %d\n", 2641 ctxp->sid, ctxp->oxid, ctxp->state); 2642 return NULL; 2643 } 2644 ctxp->wqeq = nvmewqe; 2645 xc = 0; /* create new XRI */ 2646 nvmewqe->sli4_lxritag = NO_XRI; 2647 nvmewqe->sli4_xritag = NO_XRI; 2648 } 2649 2650 /* Sanity check */ 2651 if (((ctxp->state == LPFC_NVMET_STE_RCV) && 2652 (ctxp->entry_cnt == 1)) || 2653 (ctxp->state == LPFC_NVMET_STE_DATA)) { 2654 wqe = &nvmewqe->wqe; 2655 } else { 2656 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2657 "6111 Wrong state NVMET FCP: %d cnt %d\n", 2658 ctxp->state, ctxp->entry_cnt); 2659 return NULL; 2660 } 2661 2662 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl; 2663 switch (rsp->op) { 2664 case NVMET_FCOP_READDATA: 2665 case NVMET_FCOP_READDATA_RSP: 2666 /* From the tsend template, initialize words 7 - 11 */ 2667 memcpy(&wqe->words[7], 2668 &lpfc_tsend_cmd_template.words[7], 2669 sizeof(uint32_t) * 5); 2670 2671 /* Words 0 - 2 : The first sg segment */ 2672 sgel = &rsp->sg[0]; 2673 physaddr = sg_dma_address(sgel); 2674 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2675 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); 2676 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); 2677 wqe->fcp_tsend.bde.addrHigh = 2678 cpu_to_le32(putPaddrHigh(physaddr)); 2679 2680 /* Word 3 */ 2681 wqe->fcp_tsend.payload_offset_len = 0; 2682 2683 /* Word 4 */ 2684 wqe->fcp_tsend.relative_offset = ctxp->offset; 2685 2686 /* Word 5 */ 2687 wqe->fcp_tsend.reserved = 0; 2688 2689 /* Word 6 */ 2690 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, 2691 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2692 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, 2693 nvmewqe->sli4_xritag); 2694 2695 /* Word 7 - set ar later */ 2696 2697 /* Word 8 */ 2698 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; 2699 2700 /* Word 9 */ 2701 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); 2702 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); 2703 2704 /* Word 10 - set wqes later, in template xc=1 */ 2705 if (!xc) 2706 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0); 2707 2708 /* Word 11 - set sup, irsp, irsplen later */ 2709 do_pbde = 0; 2710 2711 /* Word 12 */ 2712 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2713 2714 /* Setup 2 SKIP SGEs */ 2715 sgl->addr_hi = 0; 2716 sgl->addr_lo = 0; 2717 sgl->word2 = 0; 2718 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2719 sgl->word2 = cpu_to_le32(sgl->word2); 2720 sgl->sge_len = 0; 2721 sgl++; 2722 sgl->addr_hi = 0; 2723 sgl->addr_lo = 0; 2724 sgl->word2 = 0; 2725 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2726 sgl->word2 = cpu_to_le32(sgl->word2); 2727 sgl->sge_len = 0; 2728 sgl++; 2729 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 2730 atomic_inc(&tgtp->xmt_fcp_read_rsp); 2731 2732 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2733 2734 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { 2735 if (ndlp->nlp_flag & NLP_SUPPRESS_RSP) 2736 bf_set(wqe_sup, 2737 &wqe->fcp_tsend.wqe_com, 1); 2738 } else { 2739 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); 2740 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); 2741 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 2742 ((rsp->rsplen >> 2) - 1)); 2743 memcpy(&wqe->words[16], rsp->rspaddr, 2744 rsp->rsplen); 2745 } 2746 } else { 2747 atomic_inc(&tgtp->xmt_fcp_read); 2748 2749 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2750 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); 2751 } 2752 break; 2753 2754 case NVMET_FCOP_WRITEDATA: 2755 /* From the treceive template, initialize words 3 - 11 */ 2756 memcpy(&wqe->words[3], 2757 &lpfc_treceive_cmd_template.words[3], 2758 sizeof(uint32_t) * 9); 2759 2760 /* Words 0 - 2 : The first sg segment */ 2761 txrdy = dma_pool_alloc(phba->txrdy_payload_pool, 2762 GFP_KERNEL, &physaddr); 2763 if (!txrdy) { 2764 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2765 "6041 Bad txrdy buffer: oxid x%x\n", 2766 ctxp->oxid); 2767 return NULL; 2768 } 2769 ctxp->txrdy = txrdy; 2770 ctxp->txrdy_phys = physaddr; 2771 wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2772 wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN; 2773 wqe->fcp_treceive.bde.addrLow = 2774 cpu_to_le32(putPaddrLow(physaddr)); 2775 wqe->fcp_treceive.bde.addrHigh = 2776 cpu_to_le32(putPaddrHigh(physaddr)); 2777 2778 /* Word 4 */ 2779 wqe->fcp_treceive.relative_offset = ctxp->offset; 2780 2781 /* Word 6 */ 2782 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, 2783 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2784 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, 2785 nvmewqe->sli4_xritag); 2786 2787 /* Word 7 */ 2788 2789 /* Word 8 */ 2790 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; 2791 2792 /* Word 9 */ 2793 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); 2794 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); 2795 2796 /* Word 10 - in template xc=1 */ 2797 if (!xc) 2798 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0); 2799 2800 /* Word 11 - set pbde later */ 2801 if (phba->cfg_enable_pbde) { 2802 do_pbde = 1; 2803 } else { 2804 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0); 2805 do_pbde = 0; 2806 } 2807 2808 /* Word 12 */ 2809 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2810 2811 /* Setup 1 TXRDY and 1 SKIP SGE */ 2812 txrdy[0] = 0; 2813 txrdy[1] = cpu_to_be32(rsp->transfer_length); 2814 txrdy[2] = 0; 2815 2816 sgl->addr_hi = putPaddrHigh(physaddr); 2817 sgl->addr_lo = putPaddrLow(physaddr); 2818 sgl->word2 = 0; 2819 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2820 sgl->word2 = cpu_to_le32(sgl->word2); 2821 sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN); 2822 sgl++; 2823 sgl->addr_hi = 0; 2824 sgl->addr_lo = 0; 2825 sgl->word2 = 0; 2826 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2827 sgl->word2 = cpu_to_le32(sgl->word2); 2828 sgl->sge_len = 0; 2829 sgl++; 2830 atomic_inc(&tgtp->xmt_fcp_write); 2831 break; 2832 2833 case NVMET_FCOP_RSP: 2834 /* From the treceive template, initialize words 4 - 11 */ 2835 memcpy(&wqe->words[4], 2836 &lpfc_trsp_cmd_template.words[4], 2837 sizeof(uint32_t) * 8); 2838 2839 /* Words 0 - 2 */ 2840 physaddr = rsp->rspdma; 2841 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2842 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; 2843 wqe->fcp_trsp.bde.addrLow = 2844 cpu_to_le32(putPaddrLow(physaddr)); 2845 wqe->fcp_trsp.bde.addrHigh = 2846 cpu_to_le32(putPaddrHigh(physaddr)); 2847 2848 /* Word 3 */ 2849 wqe->fcp_trsp.response_len = rsp->rsplen; 2850 2851 /* Word 6 */ 2852 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, 2853 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2854 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, 2855 nvmewqe->sli4_xritag); 2856 2857 /* Word 7 */ 2858 2859 /* Word 8 */ 2860 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; 2861 2862 /* Word 9 */ 2863 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); 2864 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); 2865 2866 /* Word 10 */ 2867 if (xc) 2868 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1); 2869 2870 /* Word 11 */ 2871 /* In template wqes=0 irsp=0 irsplen=0 - good response */ 2872 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) { 2873 /* Bad response - embed it */ 2874 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); 2875 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); 2876 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 2877 ((rsp->rsplen >> 2) - 1)); 2878 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); 2879 } 2880 do_pbde = 0; 2881 2882 /* Word 12 */ 2883 wqe->fcp_trsp.rsvd_12_15[0] = 0; 2884 2885 /* Use rspbuf, NOT sg list */ 2886 rsp->sg_cnt = 0; 2887 sgl->word2 = 0; 2888 atomic_inc(&tgtp->xmt_fcp_rsp); 2889 break; 2890 2891 default: 2892 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2893 "6064 Unknown Rsp Op %d\n", 2894 rsp->op); 2895 return NULL; 2896 } 2897 2898 nvmewqe->retry = 1; 2899 nvmewqe->vport = phba->pport; 2900 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2901 nvmewqe->context1 = ndlp; 2902 2903 for_each_sg(rsp->sg, sgel, rsp->sg_cnt, i) { 2904 physaddr = sg_dma_address(sgel); 2905 cnt = sg_dma_len(sgel); 2906 sgl->addr_hi = putPaddrHigh(physaddr); 2907 sgl->addr_lo = putPaddrLow(physaddr); 2908 sgl->word2 = 0; 2909 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2910 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); 2911 if ((i+1) == rsp->sg_cnt) 2912 bf_set(lpfc_sli4_sge_last, sgl, 1); 2913 sgl->word2 = cpu_to_le32(sgl->word2); 2914 sgl->sge_len = cpu_to_le32(cnt); 2915 if (i == 0) { 2916 bde = (struct ulp_bde64 *)&wqe->words[13]; 2917 if (do_pbde) { 2918 /* Words 13-15 (PBDE) */ 2919 bde->addrLow = sgl->addr_lo; 2920 bde->addrHigh = sgl->addr_hi; 2921 bde->tus.f.bdeSize = 2922 le32_to_cpu(sgl->sge_len); 2923 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2924 bde->tus.w = cpu_to_le32(bde->tus.w); 2925 } else { 2926 memset(bde, 0, sizeof(struct ulp_bde64)); 2927 } 2928 } 2929 sgl++; 2930 ctxp->offset += cnt; 2931 } 2932 ctxp->state = LPFC_NVMET_STE_DATA; 2933 ctxp->entry_cnt++; 2934 return nvmewqe; 2935 } 2936 2937 /** 2938 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS 2939 * @phba: Pointer to HBA context object. 2940 * @cmdwqe: Pointer to driver command WQE object. 2941 * @wcqe: Pointer to driver response CQE object. 2942 * 2943 * The function is called from SLI ring event handler with no 2944 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 2945 * The function frees memory resources used for the NVME commands. 2946 **/ 2947 static void 2948 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 2949 struct lpfc_wcqe_complete *wcqe) 2950 { 2951 struct lpfc_nvmet_rcv_ctx *ctxp; 2952 struct lpfc_nvmet_tgtport *tgtp; 2953 uint32_t result; 2954 unsigned long flags; 2955 bool released = false; 2956 2957 ctxp = cmdwqe->context2; 2958 result = wcqe->parameter; 2959 2960 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2961 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 2962 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 2963 2964 spin_lock_irqsave(&ctxp->ctxlock, flags); 2965 ctxp->state = LPFC_NVMET_STE_DONE; 2966 2967 /* Check if we already received a free context call 2968 * and we have completed processing an abort situation. 2969 */ 2970 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 2971 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 2972 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2973 list_del_init(&ctxp->list); 2974 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2975 released = true; 2976 } 2977 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 2978 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 2979 atomic_inc(&tgtp->xmt_abort_rsp); 2980 2981 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2982 "6165 ABORT cmpl: oxid x%x flg x%x (%d) " 2983 "WCQE: %08x %08x %08x %08x\n", 2984 ctxp->oxid, ctxp->flag, released, 2985 wcqe->word0, wcqe->total_data_placed, 2986 result, wcqe->word3); 2987 2988 cmdwqe->context2 = NULL; 2989 cmdwqe->context3 = NULL; 2990 /* 2991 * if transport has released ctx, then can reuse it. Otherwise, 2992 * will be recycled by transport release call. 2993 */ 2994 if (released) 2995 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 2996 2997 /* This is the iocbq for the abort, not the command */ 2998 lpfc_sli_release_iocbq(phba, cmdwqe); 2999 3000 /* Since iaab/iaar are NOT set, there is no work left. 3001 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 3002 * should have been called already. 3003 */ 3004 } 3005 3006 /** 3007 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS 3008 * @phba: Pointer to HBA context object. 3009 * @cmdwqe: Pointer to driver command WQE object. 3010 * @wcqe: Pointer to driver response CQE object. 3011 * 3012 * The function is called from SLI ring event handler with no 3013 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 3014 * The function frees memory resources used for the NVME commands. 3015 **/ 3016 static void 3017 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3018 struct lpfc_wcqe_complete *wcqe) 3019 { 3020 struct lpfc_nvmet_rcv_ctx *ctxp; 3021 struct lpfc_nvmet_tgtport *tgtp; 3022 unsigned long flags; 3023 uint32_t result; 3024 bool released = false; 3025 3026 ctxp = cmdwqe->context2; 3027 result = wcqe->parameter; 3028 3029 if (!ctxp) { 3030 /* if context is clear, related io alrady complete */ 3031 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3032 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n", 3033 wcqe->word0, wcqe->total_data_placed, 3034 result, wcqe->word3); 3035 return; 3036 } 3037 3038 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3039 spin_lock_irqsave(&ctxp->ctxlock, flags); 3040 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 3041 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 3042 3043 /* Sanity check */ 3044 if (ctxp->state != LPFC_NVMET_STE_ABORT) { 3045 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3046 "6112 ABTS Wrong state:%d oxid x%x\n", 3047 ctxp->state, ctxp->oxid); 3048 } 3049 3050 /* Check if we already received a free context call 3051 * and we have completed processing an abort situation. 3052 */ 3053 ctxp->state = LPFC_NVMET_STE_DONE; 3054 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 3055 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 3056 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3057 list_del_init(&ctxp->list); 3058 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3059 released = true; 3060 } 3061 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3062 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3063 atomic_inc(&tgtp->xmt_abort_rsp); 3064 3065 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3066 "6316 ABTS cmpl oxid x%x flg x%x (%x) " 3067 "WCQE: %08x %08x %08x %08x\n", 3068 ctxp->oxid, ctxp->flag, released, 3069 wcqe->word0, wcqe->total_data_placed, 3070 result, wcqe->word3); 3071 3072 cmdwqe->context2 = NULL; 3073 cmdwqe->context3 = NULL; 3074 /* 3075 * if transport has released ctx, then can reuse it. Otherwise, 3076 * will be recycled by transport release call. 3077 */ 3078 if (released) 3079 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3080 3081 /* Since iaab/iaar are NOT set, there is no work left. 3082 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 3083 * should have been called already. 3084 */ 3085 } 3086 3087 /** 3088 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS 3089 * @phba: Pointer to HBA context object. 3090 * @cmdwqe: Pointer to driver command WQE object. 3091 * @wcqe: Pointer to driver response CQE 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 LS cmds 3095 * The function frees memory resources used for the NVME commands. 3096 **/ 3097 static void 3098 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3099 struct lpfc_wcqe_complete *wcqe) 3100 { 3101 struct lpfc_nvmet_rcv_ctx *ctxp; 3102 struct lpfc_nvmet_tgtport *tgtp; 3103 uint32_t result; 3104 3105 ctxp = cmdwqe->context2; 3106 result = wcqe->parameter; 3107 3108 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3109 atomic_inc(&tgtp->xmt_ls_abort_cmpl); 3110 3111 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3112 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n", 3113 ctxp, wcqe->word0, wcqe->total_data_placed, 3114 result, wcqe->word3); 3115 3116 if (!ctxp) { 3117 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3118 "6415 NVMET LS Abort No ctx: WCQE: " 3119 "%08x %08x %08x %08x\n", 3120 wcqe->word0, wcqe->total_data_placed, 3121 result, wcqe->word3); 3122 3123 lpfc_sli_release_iocbq(phba, cmdwqe); 3124 return; 3125 } 3126 3127 if (ctxp->state != LPFC_NVMET_STE_LS_ABORT) { 3128 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3129 "6416 NVMET LS abort cmpl state mismatch: " 3130 "oxid x%x: %d %d\n", 3131 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3132 } 3133 3134 cmdwqe->context2 = NULL; 3135 cmdwqe->context3 = NULL; 3136 lpfc_sli_release_iocbq(phba, cmdwqe); 3137 kfree(ctxp); 3138 } 3139 3140 static int 3141 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba, 3142 struct lpfc_nvmet_rcv_ctx *ctxp, 3143 uint32_t sid, uint16_t xri) 3144 { 3145 struct lpfc_nvmet_tgtport *tgtp; 3146 struct lpfc_iocbq *abts_wqeq; 3147 union lpfc_wqe128 *wqe_abts; 3148 struct lpfc_nodelist *ndlp; 3149 3150 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3151 "6067 ABTS: sid %x xri x%x/x%x\n", 3152 sid, xri, ctxp->wqeq->sli4_xritag); 3153 3154 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3155 3156 ndlp = lpfc_findnode_did(phba->pport, sid); 3157 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3158 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3159 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3160 atomic_inc(&tgtp->xmt_abort_rsp_error); 3161 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3162 "6134 Drop ABTS - wrong NDLP state x%x.\n", 3163 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3164 3165 /* No failure to an ABTS request. */ 3166 return 0; 3167 } 3168 3169 abts_wqeq = ctxp->wqeq; 3170 wqe_abts = &abts_wqeq->wqe; 3171 3172 /* 3173 * Since we zero the whole WQE, we need to ensure we set the WQE fields 3174 * that were initialized in lpfc_sli4_nvmet_alloc. 3175 */ 3176 memset(wqe_abts, 0, sizeof(union lpfc_wqe)); 3177 3178 /* Word 5 */ 3179 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0); 3180 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1); 3181 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0); 3182 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS); 3183 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS); 3184 3185 /* Word 6 */ 3186 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com, 3187 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 3188 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com, 3189 abts_wqeq->sli4_xritag); 3190 3191 /* Word 7 */ 3192 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com, 3193 CMD_XMIT_SEQUENCE64_WQE); 3194 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI); 3195 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3); 3196 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0); 3197 3198 /* Word 8 */ 3199 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag; 3200 3201 /* Word 9 */ 3202 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag); 3203 /* Needs to be set by caller */ 3204 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri); 3205 3206 /* Word 10 */ 3207 bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1); 3208 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 3209 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com, 3210 LPFC_WQE_LENLOC_WORD12); 3211 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0); 3212 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0); 3213 3214 /* Word 11 */ 3215 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com, 3216 LPFC_WQE_CQ_ID_DEFAULT); 3217 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com, 3218 OTHER_COMMAND); 3219 3220 abts_wqeq->vport = phba->pport; 3221 abts_wqeq->context1 = ndlp; 3222 abts_wqeq->context2 = ctxp; 3223 abts_wqeq->context3 = NULL; 3224 abts_wqeq->rsvd2 = 0; 3225 /* hba_wqidx should already be setup from command we are aborting */ 3226 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR; 3227 abts_wqeq->iocb.ulpLe = 1; 3228 3229 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3230 "6069 Issue ABTS to xri x%x reqtag x%x\n", 3231 xri, abts_wqeq->iotag); 3232 return 1; 3233 } 3234 3235 static int 3236 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba, 3237 struct lpfc_nvmet_rcv_ctx *ctxp, 3238 uint32_t sid, uint16_t xri) 3239 { 3240 struct lpfc_nvmet_tgtport *tgtp; 3241 struct lpfc_iocbq *abts_wqeq; 3242 union lpfc_wqe128 *abts_wqe; 3243 struct lpfc_nodelist *ndlp; 3244 unsigned long flags; 3245 int rc; 3246 3247 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3248 if (!ctxp->wqeq) { 3249 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3250 ctxp->wqeq->hba_wqidx = 0; 3251 } 3252 3253 ndlp = lpfc_findnode_did(phba->pport, sid); 3254 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3255 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3256 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3257 atomic_inc(&tgtp->xmt_abort_rsp_error); 3258 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3259 "6160 Drop ABORT - wrong NDLP state x%x.\n", 3260 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3261 3262 /* No failure to an ABTS request. */ 3263 spin_lock_irqsave(&ctxp->ctxlock, flags); 3264 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3265 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3266 return 0; 3267 } 3268 3269 /* Issue ABTS for this WQE based on iotag */ 3270 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba); 3271 spin_lock_irqsave(&ctxp->ctxlock, flags); 3272 if (!ctxp->abort_wqeq) { 3273 atomic_inc(&tgtp->xmt_abort_rsp_error); 3274 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3275 "6161 ABORT failed: No wqeqs: " 3276 "xri: x%x\n", ctxp->oxid); 3277 /* No failure to an ABTS request. */ 3278 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3279 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3280 return 0; 3281 } 3282 abts_wqeq = ctxp->abort_wqeq; 3283 abts_wqe = &abts_wqeq->wqe; 3284 ctxp->state = LPFC_NVMET_STE_ABORT; 3285 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3286 3287 /* Announce entry to new IO submit field. */ 3288 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3289 "6162 ABORT Request to rport DID x%06x " 3290 "for xri x%x x%x\n", 3291 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag); 3292 3293 /* If the hba is getting reset, this flag is set. It is 3294 * cleared when the reset is complete and rings reestablished. 3295 */ 3296 spin_lock_irqsave(&phba->hbalock, flags); 3297 /* driver queued commands are in process of being flushed */ 3298 if (phba->hba_flag & HBA_IOQ_FLUSH) { 3299 spin_unlock_irqrestore(&phba->hbalock, flags); 3300 atomic_inc(&tgtp->xmt_abort_rsp_error); 3301 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3302 "6163 Driver in reset cleanup - flushing " 3303 "NVME Req now. hba_flag x%x oxid x%x\n", 3304 phba->hba_flag, ctxp->oxid); 3305 lpfc_sli_release_iocbq(phba, abts_wqeq); 3306 spin_lock_irqsave(&ctxp->ctxlock, flags); 3307 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3308 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3309 return 0; 3310 } 3311 3312 /* Outstanding abort is in progress */ 3313 if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) { 3314 spin_unlock_irqrestore(&phba->hbalock, flags); 3315 atomic_inc(&tgtp->xmt_abort_rsp_error); 3316 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3317 "6164 Outstanding NVME I/O Abort Request " 3318 "still pending on oxid x%x\n", 3319 ctxp->oxid); 3320 lpfc_sli_release_iocbq(phba, abts_wqeq); 3321 spin_lock_irqsave(&ctxp->ctxlock, flags); 3322 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3323 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3324 return 0; 3325 } 3326 3327 /* Ready - mark outstanding as aborted by driver. */ 3328 abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED; 3329 3330 /* WQEs are reused. Clear stale data and set key fields to 3331 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. 3332 */ 3333 memset(abts_wqe, 0, sizeof(*abts_wqe)); 3334 3335 /* word 3 */ 3336 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); 3337 3338 /* word 7 */ 3339 bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0); 3340 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); 3341 3342 /* word 8 - tell the FW to abort the IO associated with this 3343 * outstanding exchange ID. 3344 */ 3345 abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag; 3346 3347 /* word 9 - this is the iotag for the abts_wqe completion. */ 3348 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, 3349 abts_wqeq->iotag); 3350 3351 /* word 10 */ 3352 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); 3353 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); 3354 3355 /* word 11 */ 3356 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); 3357 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); 3358 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 3359 3360 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 3361 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx; 3362 abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp; 3363 abts_wqeq->iocb_cmpl = 0; 3364 abts_wqeq->iocb_flag |= LPFC_IO_NVME; 3365 abts_wqeq->context2 = ctxp; 3366 abts_wqeq->vport = phba->pport; 3367 if (!ctxp->hdwq) 3368 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3369 3370 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3371 spin_unlock_irqrestore(&phba->hbalock, flags); 3372 if (rc == WQE_SUCCESS) { 3373 atomic_inc(&tgtp->xmt_abort_sol); 3374 return 0; 3375 } 3376 3377 atomic_inc(&tgtp->xmt_abort_rsp_error); 3378 spin_lock_irqsave(&ctxp->ctxlock, flags); 3379 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3380 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3381 lpfc_sli_release_iocbq(phba, abts_wqeq); 3382 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3383 "6166 Failed ABORT issue_wqe with status x%x " 3384 "for oxid x%x.\n", 3385 rc, ctxp->oxid); 3386 return 1; 3387 } 3388 3389 static int 3390 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba, 3391 struct lpfc_nvmet_rcv_ctx *ctxp, 3392 uint32_t sid, uint16_t xri) 3393 { 3394 struct lpfc_nvmet_tgtport *tgtp; 3395 struct lpfc_iocbq *abts_wqeq; 3396 unsigned long flags; 3397 bool released = false; 3398 int rc; 3399 3400 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3401 if (!ctxp->wqeq) { 3402 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3403 ctxp->wqeq->hba_wqidx = 0; 3404 } 3405 3406 if (ctxp->state == LPFC_NVMET_STE_FREE) { 3407 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3408 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n", 3409 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 3410 rc = WQE_BUSY; 3411 goto aerr; 3412 } 3413 ctxp->state = LPFC_NVMET_STE_ABORT; 3414 ctxp->entry_cnt++; 3415 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); 3416 if (rc == 0) 3417 goto aerr; 3418 3419 spin_lock_irqsave(&phba->hbalock, flags); 3420 abts_wqeq = ctxp->wqeq; 3421 abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp; 3422 abts_wqeq->iocb_cmpl = NULL; 3423 abts_wqeq->iocb_flag |= LPFC_IO_NVMET; 3424 if (!ctxp->hdwq) 3425 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3426 3427 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3428 spin_unlock_irqrestore(&phba->hbalock, flags); 3429 if (rc == WQE_SUCCESS) { 3430 return 0; 3431 } 3432 3433 aerr: 3434 spin_lock_irqsave(&ctxp->ctxlock, flags); 3435 if (ctxp->flag & LPFC_NVMET_CTX_RLS) { 3436 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3437 list_del_init(&ctxp->list); 3438 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3439 released = true; 3440 } 3441 ctxp->flag &= ~(LPFC_NVMET_ABORT_OP | LPFC_NVMET_CTX_RLS); 3442 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3443 3444 atomic_inc(&tgtp->xmt_abort_rsp_error); 3445 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3446 "6135 Failed to Issue ABTS for oxid x%x. Status x%x " 3447 "(%x)\n", 3448 ctxp->oxid, rc, released); 3449 if (released) 3450 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3451 return 1; 3452 } 3453 3454 static int 3455 lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba, 3456 struct lpfc_nvmet_rcv_ctx *ctxp, 3457 uint32_t sid, uint16_t xri) 3458 { 3459 struct lpfc_nvmet_tgtport *tgtp; 3460 struct lpfc_iocbq *abts_wqeq; 3461 unsigned long flags; 3462 int rc; 3463 3464 if ((ctxp->state == LPFC_NVMET_STE_LS_RCV && ctxp->entry_cnt == 1) || 3465 (ctxp->state == LPFC_NVMET_STE_LS_RSP && ctxp->entry_cnt == 2)) { 3466 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3467 ctxp->entry_cnt++; 3468 } else { 3469 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3470 "6418 NVMET LS abort state mismatch " 3471 "IO x%x: %d %d\n", 3472 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3473 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3474 } 3475 3476 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3477 if (!ctxp->wqeq) { 3478 /* Issue ABTS for this WQE based on iotag */ 3479 ctxp->wqeq = lpfc_sli_get_iocbq(phba); 3480 if (!ctxp->wqeq) { 3481 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3482 "6068 Abort failed: No wqeqs: " 3483 "xri: x%x\n", xri); 3484 /* No failure to an ABTS request. */ 3485 kfree(ctxp); 3486 return 0; 3487 } 3488 } 3489 abts_wqeq = ctxp->wqeq; 3490 3491 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) { 3492 rc = WQE_BUSY; 3493 goto out; 3494 } 3495 3496 spin_lock_irqsave(&phba->hbalock, flags); 3497 abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp; 3498 abts_wqeq->iocb_cmpl = 0; 3499 abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS; 3500 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3501 spin_unlock_irqrestore(&phba->hbalock, flags); 3502 if (rc == WQE_SUCCESS) { 3503 atomic_inc(&tgtp->xmt_abort_unsol); 3504 return 0; 3505 } 3506 out: 3507 atomic_inc(&tgtp->xmt_abort_rsp_error); 3508 abts_wqeq->context2 = NULL; 3509 abts_wqeq->context3 = NULL; 3510 lpfc_sli_release_iocbq(phba, abts_wqeq); 3511 kfree(ctxp); 3512 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3513 "6056 Failed to Issue ABTS. Status x%x\n", rc); 3514 return 0; 3515 } 3516