1 /*- 2 * Copyright (c) 2003 Silicon Graphics International Corp. 3 * Copyright (c) 2014-2015 Alexander Motin <mav@FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer, 11 * without modification. 12 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 13 * substantially similar to the "NO WARRANTY" disclaimer below 14 * ("Disclaimer") and any redistribution must be conditioned upon 15 * including a substantially similar Disclaimer requirement for further 16 * binary redistribution. 17 * 18 * NO WARRANTY 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 27 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 28 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGES. 30 * 31 * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_io.h#5 $ 32 * $FreeBSD$ 33 */ 34 /* 35 * CAM Target Layer data movement structures/interface. 36 * 37 * Author: Ken Merry <ken@FreeBSD.org> 38 */ 39 40 #ifndef _CTL_IO_H_ 41 #define _CTL_IO_H_ 42 43 #define CTL_MAX_CDBLEN 32 44 /* 45 * Uncomment this next line to enable printing out times for I/Os 46 * that take longer than CTL_TIME_IO_SECS seconds to get to the datamove 47 * and/or done stage. 48 */ 49 #define CTL_TIME_IO 50 #ifdef CTL_TIME_IO 51 #define CTL_TIME_IO_DEFAULT_SECS 90 52 #endif 53 54 /* 55 * Uncomment this next line to enable the CTL I/O delay feature. You 56 * can delay I/O at two different points -- datamove and done. This is 57 * useful for diagnosing abort conditions (for hosts that send an abort on a 58 * timeout), and for determining how long a host's timeout is. 59 */ 60 //#define CTL_IO_DELAY 61 62 typedef enum { 63 CTL_STATUS_NONE, /* No status */ 64 CTL_SUCCESS, /* Transaction completed successfully */ 65 CTL_CMD_TIMEOUT, /* Command timed out, shouldn't happen here */ 66 CTL_SEL_TIMEOUT, /* Selection timeout, shouldn't happen here */ 67 CTL_ERROR, /* General CTL error XXX expand on this? */ 68 CTL_SCSI_ERROR, /* SCSI error, look at status byte/sense data */ 69 CTL_CMD_ABORTED, /* Command aborted, don't return status */ 70 CTL_STATUS_MASK = 0xfff,/* Mask off any status flags */ 71 CTL_AUTOSENSE = 0x1000 /* Autosense performed */ 72 } ctl_io_status; 73 74 /* 75 * WARNING: Keep the data in/out/none flags where they are. They're used 76 * in conjunction with ctl_cmd_flags. See comment above ctl_cmd_flags 77 * definition in ctl_private.h. 78 */ 79 typedef enum { 80 CTL_FLAG_NONE = 0x00000000, /* no flags */ 81 CTL_FLAG_DATA_IN = 0x00000001, /* DATA IN */ 82 CTL_FLAG_DATA_OUT = 0x00000002, /* DATA OUT */ 83 CTL_FLAG_DATA_NONE = 0x00000003, /* no data */ 84 CTL_FLAG_DATA_MASK = 0x00000003, 85 CTL_FLAG_DO_AUTOSENSE = 0x00000020, /* grab sense info */ 86 CTL_FLAG_USER_REQ = 0x00000040, /* request came from userland */ 87 CTL_FLAG_ALLOCATED = 0x00000100, /* data space allocated */ 88 CTL_FLAG_BLOCKED = 0x00000200, /* on the blocked queue */ 89 CTL_FLAG_ABORT_STATUS = 0x00000400, /* return TASK ABORTED status */ 90 CTL_FLAG_ABORT = 0x00000800, /* this I/O should be aborted */ 91 CTL_FLAG_DMA_INPROG = 0x00001000, /* DMA in progress */ 92 CTL_FLAG_DELAY_DONE = 0x00004000, /* delay injection done */ 93 CTL_FLAG_INT_COPY = 0x00008000, /* internal copy, no done call*/ 94 CTL_FLAG_SENT_2OTHER_SC = 0x00010000, 95 CTL_FLAG_FROM_OTHER_SC = 0x00020000, 96 CTL_FLAG_IS_WAS_ON_RTR = 0x00040000, /* Don't rerun cmd on failover*/ 97 CTL_FLAG_BUS_ADDR = 0x00080000, /* ctl_sglist contains BUS 98 addresses, not virtual ones*/ 99 CTL_FLAG_IO_CONT = 0x00100000, /* Continue I/O instead of 100 completing */ 101 #if 0 102 CTL_FLAG_ALREADY_DONE = 0x00200000 /* I/O already completed */ 103 #endif 104 CTL_FLAG_NO_DATAMOVE = 0x00400000, 105 CTL_FLAG_DMA_QUEUED = 0x00800000, /* DMA queued but not started*/ 106 CTL_FLAG_STATUS_QUEUED = 0x01000000, /* Status queued but not sent*/ 107 108 CTL_FLAG_FAILOVER = 0x04000000, /* Killed by a failover */ 109 CTL_FLAG_IO_ACTIVE = 0x08000000, /* I/O active on this SC */ 110 CTL_FLAG_STATUS_SENT = 0x10000000, /* Status sent by datamove */ 111 CTL_FLAG_SERSEQ_DONE = 0x20000000 /* All storage I/O started */ 112 } ctl_io_flags; 113 114 115 struct ctl_lba_len { 116 uint64_t lba; 117 uint32_t len; 118 }; 119 120 struct ctl_lba_len_flags { 121 uint64_t lba; 122 uint32_t len; 123 uint32_t flags; 124 #define CTL_LLF_FUA 0x04000000 125 #define CTL_LLF_DPO 0x08000000 126 #define CTL_LLF_READ 0x10000000 127 #define CTL_LLF_WRITE 0x20000000 128 #define CTL_LLF_VERIFY 0x40000000 129 #define CTL_LLF_COMPARE 0x80000000 130 }; 131 132 struct ctl_ptr_len_flags { 133 uint8_t *ptr; 134 uint32_t len; 135 uint32_t flags; 136 }; 137 138 union ctl_priv { 139 uint8_t bytes[sizeof(uint64_t) * 2]; 140 uint64_t integer; 141 uint64_t integers[2]; 142 void *ptr; 143 void *ptrs[2]; 144 }; 145 146 /* 147 * Number of CTL private areas. 148 */ 149 #define CTL_NUM_PRIV 6 150 151 /* 152 * Which private area are we using for a particular piece of data? 153 */ 154 #define CTL_PRIV_LUN 0 /* CTL LUN pointer goes here */ 155 #define CTL_PRIV_LBA_LEN 1 /* Decoded LBA/len for read/write*/ 156 #define CTL_PRIV_MODEPAGE 1 /* Modepage info for config write */ 157 #define CTL_PRIV_BACKEND 2 /* Reserved for block, RAIDCore */ 158 #define CTL_PRIV_BACKEND_LUN 3 /* Backend LUN pointer */ 159 #define CTL_PRIV_FRONTEND 4 /* Frontend storage */ 160 #define CTL_PRIV_FRONTEND2 5 /* Another frontend storage */ 161 162 #define CTL_LUN(io) ((io)->io_hdr.ctl_private[CTL_PRIV_LUN].ptrs[0]) 163 #define CTL_SOFTC(io) ((io)->io_hdr.ctl_private[CTL_PRIV_LUN].ptrs[1]) 164 #define CTL_BACKEND_LUN(io) ((io)->io_hdr.ctl_private[CTL_PRIV_BACKEND_LUN].ptrs[0]) 165 #define CTL_PORT(io) (((struct ctl_softc *)CTL_SOFTC(io))-> \ 166 ctl_ports[(io)->io_hdr.nexus.targ_port]) 167 168 #define CTL_INVALID_PORTNAME 0xFF 169 #define CTL_UNMAPPED_IID 0xFF 170 171 struct ctl_sg_entry { 172 void *addr; 173 size_t len; 174 }; 175 176 typedef enum { 177 CTL_IO_NONE, 178 CTL_IO_SCSI, 179 CTL_IO_TASK, 180 } ctl_io_type; 181 182 struct ctl_nexus { 183 uint32_t initid; /* Initiator ID */ 184 uint32_t targ_port; /* Target port, filled in by PORT */ 185 uint32_t targ_lun; /* Destination lun */ 186 uint32_t targ_mapped_lun; /* Destination lun CTL-wide */ 187 }; 188 189 typedef enum { 190 CTL_MSG_SERIALIZE, 191 CTL_MSG_R2R, 192 CTL_MSG_FINISH_IO, 193 CTL_MSG_BAD_JUJU, 194 CTL_MSG_MANAGE_TASKS, 195 CTL_MSG_PERS_ACTION, 196 CTL_MSG_DATAMOVE, 197 CTL_MSG_DATAMOVE_DONE, 198 CTL_MSG_UA, /* Set/clear UA on secondary. */ 199 CTL_MSG_PORT_SYNC, /* Information about port. */ 200 CTL_MSG_LUN_SYNC, /* Information about LUN. */ 201 CTL_MSG_IID_SYNC, /* Information about initiator. */ 202 CTL_MSG_LOGIN, /* Information about HA peer. */ 203 CTL_MSG_MODE_SYNC, /* Mode page current content. */ 204 CTL_MSG_FAILOVER /* Fake, never sent though the wire */ 205 } ctl_msg_type; 206 207 struct ctl_scsiio; 208 209 struct ctl_io_hdr { 210 uint32_t version; /* interface version XXX */ 211 ctl_io_type io_type; /* task I/O, SCSI I/O, etc. */ 212 ctl_msg_type msg_type; 213 struct ctl_nexus nexus; /* Initiator, port, target, lun */ 214 uint32_t iid_indx; /* the index into the iid mapping */ 215 uint32_t flags; /* transaction flags */ 216 uint32_t status; /* transaction status */ 217 uint32_t port_status; /* trans status, set by PORT, 0 = good*/ 218 uint32_t timeout; /* timeout in ms */ 219 uint32_t retries; /* retry count */ 220 #ifdef CTL_IO_DELAY 221 struct callout delay_callout; 222 #endif /* CTL_IO_DELAY */ 223 #ifdef CTL_TIME_IO 224 time_t start_time; /* I/O start time */ 225 struct bintime start_bt; /* Timer start ticks */ 226 struct bintime dma_start_bt; /* DMA start ticks */ 227 struct bintime dma_bt; /* DMA total ticks */ 228 #endif /* CTL_TIME_IO */ 229 uint32_t num_dmas; /* Number of DMAs */ 230 union ctl_io *original_sc; 231 union ctl_io *serializing_sc; 232 void *pool; /* I/O pool */ 233 union ctl_priv ctl_private[CTL_NUM_PRIV];/* CTL private area */ 234 struct ctl_sg_entry *remote_sglist; 235 struct ctl_sg_entry *local_sglist; 236 STAILQ_ENTRY(ctl_io_hdr) links; /* linked list pointer */ 237 TAILQ_ENTRY(ctl_io_hdr) ooa_links; 238 TAILQ_ENTRY(ctl_io_hdr) blocked_links; 239 }; 240 241 typedef enum { 242 CTL_TAG_UNTAGGED, 243 CTL_TAG_SIMPLE, 244 CTL_TAG_ORDERED, 245 CTL_TAG_HEAD_OF_QUEUE, 246 CTL_TAG_ACA 247 } ctl_tag_type; 248 249 union ctl_io; 250 251 /* 252 * SCSI passthrough I/O structure for the CAM Target Layer. Note 253 * that some of these fields are here for completeness, but they aren't 254 * used in the CTL implementation. e.g., timeout and retries won't be 255 * used. 256 * 257 * Note: Make sure the io_hdr is *always* the first element in this 258 * structure. 259 */ 260 struct ctl_scsiio { 261 struct ctl_io_hdr io_hdr; /* common to all I/O types */ 262 263 /* 264 * The ext_* fields are generally intended for frontend use; CTL itself 265 * doesn't modify or use them. 266 */ 267 uint32_t ext_sg_entries; /* 0 = no S/G list, > 0 = num entries */ 268 uint8_t *ext_data_ptr; /* data buffer or S/G list */ 269 uint32_t ext_data_len; /* Data transfer length */ 270 uint32_t ext_data_filled; /* Amount of data filled so far */ 271 272 /* 273 * The number of scatter/gather entries in the list pointed to 274 * by kern_data_ptr. 0 means there is no list, just a data pointer. 275 */ 276 uint32_t kern_sg_entries; 277 278 uint32_t rem_sg_entries; /* Unused. */ 279 280 /* 281 * The data pointer or a pointer to the scatter/gather list. 282 */ 283 uint8_t *kern_data_ptr; 284 285 /* 286 * Length of the data buffer or scatter/gather list. It's also 287 * the length of this particular piece of the data transfer, 288 * ie. number of bytes expected to be transferred by the current 289 * invocation of frontend's datamove() callback. It's always 290 * less than or equal to kern_total_len. 291 */ 292 uint32_t kern_data_len; 293 294 /* 295 * Total length of data to be transferred during this particular 296 * SCSI command, as decoded from SCSI CDB. 297 */ 298 uint32_t kern_total_len; 299 300 /* 301 * Amount of data left after the current data transfer. 302 */ 303 uint32_t kern_data_resid; 304 305 /* 306 * Byte offset of this transfer, equal to the amount of data 307 * already transferred for this SCSI command during previous 308 * datamove() invocations. 309 */ 310 uint32_t kern_rel_offset; 311 312 struct scsi_sense_data sense_data; /* sense data */ 313 uint8_t sense_len; /* Returned sense length */ 314 uint8_t scsi_status; /* SCSI status byte */ 315 uint8_t sense_residual; /* Unused. */ 316 uint32_t residual; /* Unused */ 317 uint32_t tag_num; /* tag number */ 318 ctl_tag_type tag_type; /* simple, ordered, head of queue,etc.*/ 319 uint8_t cdb_len; /* CDB length */ 320 uint8_t cdb[CTL_MAX_CDBLEN]; /* CDB */ 321 int (*be_move_done)(union ctl_io *io); /* called by fe */ 322 int (*io_cont)(union ctl_io *io); /* to continue processing */ 323 }; 324 325 typedef enum { 326 CTL_TASK_ABORT_TASK, 327 CTL_TASK_ABORT_TASK_SET, 328 CTL_TASK_CLEAR_ACA, 329 CTL_TASK_CLEAR_TASK_SET, 330 CTL_TASK_I_T_NEXUS_RESET, 331 CTL_TASK_LUN_RESET, 332 CTL_TASK_TARGET_RESET, 333 CTL_TASK_BUS_RESET, 334 CTL_TASK_PORT_LOGIN, 335 CTL_TASK_PORT_LOGOUT, 336 CTL_TASK_QUERY_TASK, 337 CTL_TASK_QUERY_TASK_SET, 338 CTL_TASK_QUERY_ASYNC_EVENT 339 } ctl_task_type; 340 341 typedef enum { 342 CTL_TASK_FUNCTION_COMPLETE, 343 CTL_TASK_FUNCTION_SUCCEEDED, 344 CTL_TASK_FUNCTION_REJECTED, 345 CTL_TASK_LUN_DOES_NOT_EXIST, 346 CTL_TASK_FUNCTION_NOT_SUPPORTED 347 } ctl_task_status; 348 349 /* 350 * Task management I/O structure. Aborts, bus resets, etc., are sent using 351 * this structure. 352 * 353 * Note: Make sure the io_hdr is *always* the first element in this 354 * structure. 355 */ 356 struct ctl_taskio { 357 struct ctl_io_hdr io_hdr; /* common to all I/O types */ 358 ctl_task_type task_action; /* Target Reset, Abort, etc. */ 359 uint32_t tag_num; /* tag number */ 360 ctl_tag_type tag_type; /* simple, ordered, etc. */ 361 uint8_t task_status; /* Complete, Succeeded, etc. */ 362 uint8_t task_resp[3];/* Response information */ 363 }; 364 365 366 /* 367 * HA link messages. 368 */ 369 #define CTL_HA_VERSION 3 370 371 /* 372 * Used for CTL_MSG_LOGIN. 373 */ 374 struct ctl_ha_msg_login { 375 ctl_msg_type msg_type; 376 int version; 377 int ha_mode; 378 int ha_id; 379 int max_luns; 380 int max_ports; 381 int max_init_per_port; 382 }; 383 384 typedef enum { 385 CTL_PR_REG_KEY, 386 CTL_PR_UNREG_KEY, 387 CTL_PR_PREEMPT, 388 CTL_PR_CLEAR, 389 CTL_PR_RESERVE, 390 CTL_PR_RELEASE 391 } ctl_pr_action; 392 393 /* 394 * The PR info is specifically for sending Persistent Reserve actions 395 * to the other SC which it must also act on. 396 * 397 * Note: Make sure the io_hdr is *always* the first element in this 398 * structure. 399 */ 400 struct ctl_pr_info { 401 ctl_pr_action action; 402 uint8_t sa_res_key[8]; 403 uint8_t res_type; 404 uint32_t residx; 405 }; 406 407 struct ctl_ha_msg_hdr { 408 ctl_msg_type msg_type; 409 uint32_t status; /* transaction status */ 410 union ctl_io *original_sc; 411 union ctl_io *serializing_sc; 412 struct ctl_nexus nexus; /* Initiator, port, target, lun */ 413 }; 414 415 #define CTL_HA_MAX_SG_ENTRIES 16 416 #define CTL_HA_DATAMOVE_SEGMENT 131072 417 418 /* 419 * Used for CTL_MSG_PERS_ACTION. 420 */ 421 struct ctl_ha_msg_pr { 422 struct ctl_ha_msg_hdr hdr; 423 struct ctl_pr_info pr_info; 424 }; 425 426 /* 427 * Used for CTL_MSG_UA. 428 */ 429 struct ctl_ha_msg_ua { 430 struct ctl_ha_msg_hdr hdr; 431 int ua_all; 432 int ua_set; 433 int ua_type; 434 uint8_t ua_info[8]; 435 }; 436 437 /* 438 * The S/G handling here is a little different than the standard ctl_scsiio 439 * structure, because we can't pass data by reference in between controllers. 440 * The S/G list in the ctl_scsiio struct is normally passed in the 441 * kern_data_ptr field. So kern_sg_entries here will always be non-zero, 442 * even if there is only one entry. 443 * 444 * Used for CTL_MSG_DATAMOVE. 445 */ 446 struct ctl_ha_msg_dt { 447 struct ctl_ha_msg_hdr hdr; 448 ctl_io_flags flags; /* Only I/O flags are used here */ 449 uint32_t sg_sequence; /* S/G portion number */ 450 uint8_t sg_last; /* last S/G batch = 1 */ 451 uint32_t sent_sg_entries; /* previous S/G count */ 452 uint32_t cur_sg_entries; /* current S/G entries */ 453 uint32_t kern_sg_entries; /* total S/G entries */ 454 uint32_t kern_data_len; /* Length of this S/G list */ 455 uint32_t kern_total_len; /* Total length of this 456 transaction */ 457 uint32_t kern_data_resid; /* Length left to transfer 458 after this*/ 459 uint32_t kern_rel_offset; /* Byte Offset of this 460 transfer */ 461 struct ctl_sg_entry sg_list[CTL_HA_MAX_SG_ENTRIES]; 462 }; 463 464 /* 465 * Used for CTL_MSG_SERIALIZE, CTL_MSG_FINISH_IO, CTL_MSG_BAD_JUJU, 466 * and CTL_MSG_DATAMOVE_DONE. 467 */ 468 struct ctl_ha_msg_scsi { 469 struct ctl_ha_msg_hdr hdr; 470 uint32_t tag_num; /* tag number */ 471 ctl_tag_type tag_type; /* simple, ordered, etc. */ 472 uint8_t cdb[CTL_MAX_CDBLEN]; /* CDB */ 473 uint8_t cdb_len; /* CDB length */ 474 uint8_t scsi_status; /* SCSI status byte */ 475 uint8_t sense_len; /* Returned sense length */ 476 uint32_t port_status; /* trans status, set by FETD, 477 0 = good*/ 478 uint32_t kern_data_resid; /* for DATAMOVE_DONE */ 479 struct scsi_sense_data sense_data; /* sense data */ 480 }; 481 482 /* 483 * Used for CTL_MSG_MANAGE_TASKS. 484 */ 485 struct ctl_ha_msg_task { 486 struct ctl_ha_msg_hdr hdr; 487 ctl_task_type task_action; /* Target Reset, Abort, etc. */ 488 uint32_t tag_num; /* tag number */ 489 ctl_tag_type tag_type; /* simple, ordered, etc. */ 490 }; 491 492 /* 493 * Used for CTL_MSG_PORT_SYNC. 494 */ 495 struct ctl_ha_msg_port { 496 struct ctl_ha_msg_hdr hdr; 497 int port_type; 498 int physical_port; 499 int virtual_port; 500 int status; 501 int name_len; 502 int lun_map_len; 503 int port_devid_len; 504 int target_devid_len; 505 int init_devid_len; 506 uint8_t data[]; 507 }; 508 509 /* 510 * Used for CTL_MSG_LUN_SYNC. 511 */ 512 struct ctl_ha_msg_lun { 513 struct ctl_ha_msg_hdr hdr; 514 int flags; 515 unsigned int pr_generation; 516 uint32_t pr_res_idx; 517 uint8_t pr_res_type; 518 int lun_devid_len; 519 int pr_key_count; 520 uint8_t data[]; 521 }; 522 523 struct ctl_ha_msg_lun_pr_key { 524 uint32_t pr_iid; 525 uint64_t pr_key; 526 }; 527 528 /* 529 * Used for CTL_MSG_IID_SYNC. 530 */ 531 struct ctl_ha_msg_iid { 532 struct ctl_ha_msg_hdr hdr; 533 int in_use; 534 int name_len; 535 uint64_t wwpn; 536 uint8_t data[]; 537 }; 538 539 /* 540 * Used for CTL_MSG_MODE_SYNC. 541 */ 542 struct ctl_ha_msg_mode { 543 struct ctl_ha_msg_hdr hdr; 544 uint8_t page_code; 545 uint8_t subpage; 546 uint16_t page_len; 547 uint8_t data[]; 548 }; 549 550 union ctl_ha_msg { 551 struct ctl_ha_msg_hdr hdr; 552 struct ctl_ha_msg_task task; 553 struct ctl_ha_msg_scsi scsi; 554 struct ctl_ha_msg_dt dt; 555 struct ctl_ha_msg_pr pr; 556 struct ctl_ha_msg_ua ua; 557 struct ctl_ha_msg_port port; 558 struct ctl_ha_msg_lun lun; 559 struct ctl_ha_msg_iid iid; 560 struct ctl_ha_msg_login login; 561 struct ctl_ha_msg_mode mode; 562 }; 563 564 struct ctl_prio { 565 struct ctl_io_hdr io_hdr; 566 struct ctl_ha_msg_pr pr_msg; 567 }; 568 569 union ctl_io { 570 struct ctl_io_hdr io_hdr; /* common to all I/O types */ 571 struct ctl_scsiio scsiio; /* Normal SCSI commands */ 572 struct ctl_taskio taskio; /* SCSI task management/reset */ 573 struct ctl_prio presio; /* update per. res info on other SC */ 574 }; 575 576 #ifdef _KERNEL 577 578 union ctl_io *ctl_alloc_io(void *pool_ref); 579 union ctl_io *ctl_alloc_io_nowait(void *pool_ref); 580 void ctl_free_io(union ctl_io *io); 581 void ctl_zero_io(union ctl_io *io); 582 583 #endif /* _KERNEL */ 584 585 #endif /* _CTL_IO_H_ */ 586 587 /* 588 * vim: ts=8 589 */ 590