fs/cifs/smb2ops.c

   1 /*
   2  *  SMB2 version specific operations
   3  *
   4  *  Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
   5  *
   6  *  This library is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License v2 as published
   8  *  by the Free Software Foundation.
   9  *
  10  *  This library is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13  *  the GNU Lesser General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU Lesser General Public License
  16  *  along with this library; if not, write to the Free Software
  17  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 #include <linux/pagemap.h>
  21 #include <linux/vfs.h>
  22 #include "cifsglob.h"
  23 #include "smb2pdu.h"
  24 #include "smb2proto.h"
  25 #include "cifsproto.h"
  26 #include "cifs_debug.h"
  27 #include "smb2status.h"
  28 #include "smb2glob.h"
  29
  30 static int
  31 change_conf(struct TCP_Server_Info *server)
  32 {
  33         server->credits += server->echo_credits + server->oplock_credits;
  34         server->oplock_credits = server->echo_credits = 0;
  35         switch (server->credits) {
  36         case 0:
  37                 return -1;
  38         case 1:
  39                 server->echoes = false;
  40                 server->oplocks = false;
  41                 cifs_dbg(VFS, "disabling echoes and oplocks\n");
  42                 break;
  43         case 2:
  44                 server->echoes = true;
  45                 server->oplocks = false;
  46                 server->echo_credits = 1;
  47                 cifs_dbg(FYI, "disabling oplocks\n");
  48                 break;
  49         default:
  50                 server->echoes = true;
  51                 if (enable_oplocks) {
  52                         server->oplocks = true;
  53                         server->oplock_credits = 1;
  54                 } else
  55                         server->oplocks = false;
  56
  57                 server->echo_credits = 1;
  58         }
  59         server->credits -= server->echo_credits + server->oplock_credits;
  60         return 0;
  61 }
  62
  63 static void
  64 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
  65                  const int optype)
  66 {
  67         int *val, rc = 0;
  68         spin_lock(&server->req_lock);
  69         val = server->ops->get_credits_field(server, optype);
  70         *val += add;
  71         server->in_flight--;
  72         if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
  73                 rc = change_conf(server);
  74         /*
  75          * Sometimes server returns 0 credits on oplock break ack - we need to
  76          * rebalance credits in this case.
  77          */
  78         else if (server->in_flight > 0 && server->oplock_credits == 0 &&
  79                  server->oplocks) {
  80                 if (server->credits > 1) {
  81                         server->credits--;
  82                         server->oplock_credits++;
  83                 }
  84         }
  85         spin_unlock(&server->req_lock);
  86         wake_up(&server->request_q);
  87         if (rc)
  88                 cifs_reconnect(server);
  89 }
  90
  91 static void
  92 smb2_set_credits(struct TCP_Server_Info *server, const int val)
  93 {
  94         spin_lock(&server->req_lock);
  95         server->credits = val;
  96         spin_unlock(&server->req_lock);
  97 }
  98
  99 static int *
 100 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
 101 {
 102         switch (optype) {
 103         case CIFS_ECHO_OP:
 104                 return &server->echo_credits;
 105         case CIFS_OBREAK_OP:
 106                 return &server->oplock_credits;
 107         default:
 108                 return &server->credits;
 109         }
 110 }
 111
 112 static unsigned int
 113 smb2_get_credits(struct mid_q_entry *mid)
 114 {
 115         return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
 116 }
 117
 118 static __u64
 119 smb2_get_next_mid(struct TCP_Server_Info *server)
 120 {
 121         __u64 mid;
 122         /* for SMB2 we need the current value */
 123         spin_lock(&GlobalMid_Lock);
 124         mid = server->CurrentMid++;
 125         spin_unlock(&GlobalMid_Lock);
 126         return mid;
 127 }
 128
 129 static struct mid_q_entry *
 130 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
 131 {
 132         struct mid_q_entry *mid;
 133         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 134
 135         spin_lock(&GlobalMid_Lock);
 136         list_for_each_entry(mid, &server->pending_mid_q, qhead) {
 137                 if ((mid->mid == hdr->MessageId) &&
 138                     (mid->mid_state == MID_REQUEST_SUBMITTED) &&
 139                     (mid->command == hdr->Command)) {
 140                         spin_unlock(&GlobalMid_Lock);
 141                         return mid;
 142                 }
 143         }
 144         spin_unlock(&GlobalMid_Lock);
 145         return NULL;
 146 }
 147
 148 static void
 149 smb2_dump_detail(void *buf)
 150 {
 151 #ifdef CONFIG_CIFS_DEBUG2
 152         struct smb2_hdr *smb = (struct smb2_hdr *)buf;
 153
 154         cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
 155                  smb->Command, smb->Status, smb->Flags, smb->MessageId,
 156                  smb->ProcessId);
 157         cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
 158 #endif
 159 }
 160
 161 static bool
 162 smb2_need_neg(struct TCP_Server_Info *server)
 163 {
 164         return server->max_read == 0;
 165 }
 166
 167 static int
 168 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
 169 {
 170         int rc;
 171         ses->server->CurrentMid = 0;
 172         rc = SMB2_negotiate(xid, ses);
 173         /* BB we probably don't need to retry with modern servers */
 174         if (rc == -EAGAIN)
 175                 rc = -EHOSTDOWN;
 176         return rc;
 177 }
 178
 179 static unsigned int
 180 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 181 {
 182         struct TCP_Server_Info *server = tcon->ses->server;
 183         unsigned int wsize;
 184
 185         /* start with specified wsize, or default */
 186         wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
 187         wsize = min_t(unsigned int, wsize, server->max_write);
 188         /* set it to the maximum buffer size value we can send with 1 credit */
 189         wsize = min_t(unsigned int, wsize, SMB2_MAX_BUFFER_SIZE);
 190
 191         return wsize;
 192 }
 193
 194 static unsigned int
 195 smb2_negotiate_rsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 196 {
 197         struct TCP_Server_Info *server = tcon->ses->server;
 198         unsigned int rsize;
 199
 200         /* start with specified rsize, or default */
 201         rsize = volume_info->rsize ? volume_info->rsize : CIFS_DEFAULT_IOSIZE;
 202         rsize = min_t(unsigned int, rsize, server->max_read);
 203         /* set it to the maximum buffer size value we can send with 1 credit */
 204         rsize = min_t(unsigned int, rsize, SMB2_MAX_BUFFER_SIZE);
 205
 206         return rsize;
 207 }
 208
 209 static int
 210 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 211                         struct cifs_sb_info *cifs_sb, const char *full_path)
 212 {
 213         int rc;
 214         __u64 persistent_fid, volatile_fid;
 215         __le16 *utf16_path;
 216         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 217
 218         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 219         if (!utf16_path)
 220                 return -ENOMEM;
 221
 222         rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
 223                        FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL);
 224         if (rc) {
 225                 kfree(utf16_path);
 226                 return rc;
 227         }
 228
 229         rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
 230         kfree(utf16_path);
 231         return rc;
 232 }
 233
 234 static int
 235 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 236                   struct cifs_sb_info *cifs_sb, const char *full_path,
 237                   u64 *uniqueid, FILE_ALL_INFO *data)
 238 {
 239         *uniqueid = le64_to_cpu(data->IndexNumber);
 240         return 0;
 241 }
 242
 243 static int
 244 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 245                      struct cifs_fid *fid, FILE_ALL_INFO *data)
 246 {
 247         int rc;
 248         struct smb2_file_all_info *smb2_data;
 249
 250         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2,
 251                             GFP_KERNEL);
 252         if (smb2_data == NULL)
 253                 return -ENOMEM;
 254
 255         rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
 256                              smb2_data);
 257         if (!rc)
 258                 move_smb2_info_to_cifs(data, smb2_data);
 259         kfree(smb2_data);
 260         return rc;
 261 }
 262
 263 static bool
 264 smb2_can_echo(struct TCP_Server_Info *server)
 265 {
 266         return server->echoes;
 267 }
 268
 269 static void
 270 smb2_clear_stats(struct cifs_tcon *tcon)
 271 {
 272 #ifdef CONFIG_CIFS_STATS
 273         int i;
 274         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 275                 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
 276                 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 277         }
 278 #endif
 279 }
 280
 281 static void
 282 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 283 {
 284 #ifdef CONFIG_CIFS_STATS
 285         atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
 286         atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 287         seq_printf(m, "\nNegotiates: %d sent %d failed",
 288                    atomic_read(&sent[SMB2_NEGOTIATE_HE]),
 289                    atomic_read(&failed[SMB2_NEGOTIATE_HE]));
 290         seq_printf(m, "\nSessionSetups: %d sent %d failed",
 291                    atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
 292                    atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
 293 #define SMB2LOGOFF              0x0002 /* trivial request/resp */
 294         seq_printf(m, "\nLogoffs: %d sent %d failed",
 295                    atomic_read(&sent[SMB2_LOGOFF_HE]),
 296                    atomic_read(&failed[SMB2_LOGOFF_HE]));
 297         seq_printf(m, "\nTreeConnects: %d sent %d failed",
 298                    atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
 299                    atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
 300         seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
 301                    atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
 302                    atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
 303         seq_printf(m, "\nCreates: %d sent %d failed",
 304                    atomic_read(&sent[SMB2_CREATE_HE]),
 305                    atomic_read(&failed[SMB2_CREATE_HE]));
 306         seq_printf(m, "\nCloses: %d sent %d failed",
 307                    atomic_read(&sent[SMB2_CLOSE_HE]),
 308                    atomic_read(&failed[SMB2_CLOSE_HE]));
 309         seq_printf(m, "\nFlushes: %d sent %d failed",
 310                    atomic_read(&sent[SMB2_FLUSH_HE]),
 311                    atomic_read(&failed[SMB2_FLUSH_HE]));
 312         seq_printf(m, "\nReads: %d sent %d failed",
 313                    atomic_read(&sent[SMB2_READ_HE]),
 314                    atomic_read(&failed[SMB2_READ_HE]));
 315         seq_printf(m, "\nWrites: %d sent %d failed",
 316                    atomic_read(&sent[SMB2_WRITE_HE]),
 317                    atomic_read(&failed[SMB2_WRITE_HE]));
 318         seq_printf(m, "\nLocks: %d sent %d failed",
 319                    atomic_read(&sent[SMB2_LOCK_HE]),
 320                    atomic_read(&failed[SMB2_LOCK_HE]));
 321         seq_printf(m, "\nIOCTLs: %d sent %d failed",
 322                    atomic_read(&sent[SMB2_IOCTL_HE]),
 323                    atomic_read(&failed[SMB2_IOCTL_HE]));
 324         seq_printf(m, "\nCancels: %d sent %d failed",
 325                    atomic_read(&sent[SMB2_CANCEL_HE]),
 326                    atomic_read(&failed[SMB2_CANCEL_HE]));
 327         seq_printf(m, "\nEchos: %d sent %d failed",
 328                    atomic_read(&sent[SMB2_ECHO_HE]),
 329                    atomic_read(&failed[SMB2_ECHO_HE]));
 330         seq_printf(m, "\nQueryDirectories: %d sent %d failed",
 331                    atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
 332                    atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
 333         seq_printf(m, "\nChangeNotifies: %d sent %d failed",
 334                    atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
 335                    atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
 336         seq_printf(m, "\nQueryInfos: %d sent %d failed",
 337                    atomic_read(&sent[SMB2_QUERY_INFO_HE]),
 338                    atomic_read(&failed[SMB2_QUERY_INFO_HE]));
 339         seq_printf(m, "\nSetInfos: %d sent %d failed",
 340                    atomic_read(&sent[SMB2_SET_INFO_HE]),
 341                    atomic_read(&failed[SMB2_SET_INFO_HE]));
 342         seq_printf(m, "\nOplockBreaks: %d sent %d failed",
 343                    atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
 344                    atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
 345 #endif
 346 }
 347
 348 static void
 349 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 350 {
 351         struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 352         cfile->fid.persistent_fid = fid->persistent_fid;
 353         cfile->fid.volatile_fid = fid->volatile_fid;
 354         smb2_set_oplock_level(cinode, oplock);
 355         cinode->can_cache_brlcks = cinode->clientCanCacheAll;
 356 }
 357
 358 static void
 359 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 360                 struct cifs_fid *fid)
 361 {
 362         SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 363 }
 364
 365 static int
 366 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 367                 struct cifs_fid *fid)
 368 {
 369         return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 370 }
 371
 372 static unsigned int
 373 smb2_read_data_offset(char *buf)
 374 {
 375         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 376         return rsp->DataOffset;
 377 }
 378
 379 static unsigned int
 380 smb2_read_data_length(char *buf)
 381 {
 382         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 383         return le32_to_cpu(rsp->DataLength);
 384 }
 385
 386
 387 static int
 388 smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
 389                struct cifs_io_parms *parms, unsigned int *bytes_read,
 390                char **buf, int *buf_type)
 391 {
 392         parms->persistent_fid = cfile->fid.persistent_fid;
 393         parms->volatile_fid = cfile->fid.volatile_fid;
 394         return SMB2_read(xid, parms, bytes_read, buf, buf_type);
 395 }
 396
 397 static int
 398 smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
 399                 struct cifs_io_parms *parms, unsigned int *written,
 400                 struct kvec *iov, unsigned long nr_segs)
 401 {
 402
 403         parms->persistent_fid = cfile->fid.persistent_fid;
 404         parms->volatile_fid = cfile->fid.volatile_fid;
 405         return SMB2_write(xid, parms, written, iov, nr_segs);
 406 }
 407
 408 static int
 409 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
 410                    struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
 411 {
 412         __le64 eof = cpu_to_le64(size);
 413         return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
 414                             cfile->fid.volatile_fid, cfile->pid, &eof);
 415 }
 416
 417 static int
 418 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 419                      const char *path, struct cifs_sb_info *cifs_sb,
 420                      struct cifs_fid *fid, __u16 search_flags,
 421                      struct cifs_search_info *srch_inf)
 422 {
 423         __le16 *utf16_path;
 424         int rc;
 425         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 426         __u64 persistent_fid, volatile_fid;
 427
 428         utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 429         if (!utf16_path)
 430                 return -ENOMEM;
 431
 432         rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
 433                        FILE_READ_ATTRIBUTES | FILE_READ_DATA, FILE_OPEN, 0, 0,
 434                        &oplock, NULL);
 435         kfree(utf16_path);
 436         if (rc) {
 437                 cifs_dbg(VFS, "open dir failed\n");
 438                 return rc;
 439         }
 440
 441         srch_inf->entries_in_buffer = 0;
 442         srch_inf->index_of_last_entry = 0;
 443         fid->persistent_fid = persistent_fid;
 444         fid->volatile_fid = volatile_fid;
 445
 446         rc = SMB2_query_directory(xid, tcon, persistent_fid, volatile_fid, 0,
 447                                   srch_inf);
 448         if (rc) {
 449                 cifs_dbg(VFS, "query directory failed\n");
 450                 SMB2_close(xid, tcon, persistent_fid, volatile_fid);
 451         }
 452         return rc;
 453 }
 454
 455 static int
 456 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 457                     struct cifs_fid *fid, __u16 search_flags,
 458                     struct cifs_search_info *srch_inf)
 459 {
 460         return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 461                                     fid->volatile_fid, 0, srch_inf);
 462 }
 463
 464 static int
 465 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 466                struct cifs_fid *fid)
 467 {
 468         return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 469 }
 470
 471 /*
 472 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
 473 * the number of credits and return true. Otherwise - return false.
 474 */
 475 static bool
 476 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 477 {
 478         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 479
 480         if (hdr->Status != STATUS_PENDING)
 481                 return false;
 482
 483         if (!length) {
 484                 spin_lock(&server->req_lock);
 485                 server->credits += le16_to_cpu(hdr->CreditRequest);
 486                 spin_unlock(&server->req_lock);
 487                 wake_up(&server->request_q);
 488         }
 489
 490         return true;
 491 }
 492
 493 static int
 494 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 495                      struct cifsInodeInfo *cinode)
 496 {
 497         if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 498                 return SMB2_lease_break(0, tcon, cinode->lease_key,
 499                                         smb2_get_lease_state(cinode));
 500
 501         return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 502                                  fid->volatile_fid,
 503                                  cinode->clientCanCacheRead ? 1 : 0);
 504 }
 505
 506 static int
 507 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 508              struct kstatfs *buf)
 509 {
 510         int rc;
 511         u64 persistent_fid, volatile_fid;
 512         __le16 srch_path = 0; /* Null - open root of share */
 513         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 514
 515         rc = SMB2_open(xid, tcon, &srch_path, &persistent_fid, &volatile_fid,
 516                        FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, &oplock, NULL);
 517         if (rc)
 518                 return rc;
 519         buf->f_type = SMB2_MAGIC_NUMBER;
 520         rc = SMB2_QFS_info(xid, tcon, persistent_fid, volatile_fid, buf);
 521         SMB2_close(xid, tcon, persistent_fid, volatile_fid);
 522         return rc;
 523 }
 524
 525 static bool
 526 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 527 {
 528         return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 529                ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 530 }
 531
 532 static int
 533 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 534                __u64 length, __u32 type, int lock, int unlock, bool wait)
 535 {
 536         if (unlock && !lock)
 537                 type = SMB2_LOCKFLAG_UNLOCK;
 538         return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 539                          cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 540                          current->tgid, length, offset, type, wait);
 541 }
 542
 543 static void
 544 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 545 {
 546         memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 547 }
 548
 549 static void
 550 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 551 {
 552         memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 553 }
 554
 555 static void
 556 smb2_new_lease_key(struct cifs_fid *fid)
 557 {
 558         get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 559 }
 560
 561 static bool
 562 smb2_dir_needs_close(struct cifsFileInfo *cfile)
 563 {
 564         return !cfile->invalidHandle;
 565 }
 566
 567 struct smb_version_operations smb21_operations = {
 568         .compare_fids = smb2_compare_fids,
 569         .setup_request = smb2_setup_request,
 570         .setup_async_request = smb2_setup_async_request,
 571         .check_receive = smb2_check_receive,
 572         .add_credits = smb2_add_credits,
 573         .set_credits = smb2_set_credits,
 574         .get_credits_field = smb2_get_credits_field,
 575         .get_credits = smb2_get_credits,
 576         .get_next_mid = smb2_get_next_mid,
 577         .read_data_offset = smb2_read_data_offset,
 578         .read_data_length = smb2_read_data_length,
 579         .map_error = map_smb2_to_linux_error,
 580         .find_mid = smb2_find_mid,
 581         .check_message = smb2_check_message,
 582         .dump_detail = smb2_dump_detail,
 583         .clear_stats = smb2_clear_stats,
 584         .print_stats = smb2_print_stats,
 585         .is_oplock_break = smb2_is_valid_oplock_break,
 586         .need_neg = smb2_need_neg,
 587         .negotiate = smb2_negotiate,
 588         .negotiate_wsize = smb2_negotiate_wsize,
 589         .negotiate_rsize = smb2_negotiate_rsize,
 590         .sess_setup = SMB2_sess_setup,
 591         .logoff = SMB2_logoff,
 592         .tree_connect = SMB2_tcon,
 593         .tree_disconnect = SMB2_tdis,
 594         .is_path_accessible = smb2_is_path_accessible,
 595         .can_echo = smb2_can_echo,
 596         .echo = SMB2_echo,
 597         .query_path_info = smb2_query_path_info,
 598         .get_srv_inum = smb2_get_srv_inum,
 599         .query_file_info = smb2_query_file_info,
 600         .set_path_size = smb2_set_path_size,
 601         .set_file_size = smb2_set_file_size,
 602         .set_file_info = smb2_set_file_info,
 603         .mkdir = smb2_mkdir,
 604         .mkdir_setinfo = smb2_mkdir_setinfo,
 605         .rmdir = smb2_rmdir,
 606         .unlink = smb2_unlink,
 607         .rename = smb2_rename_path,
 608         .create_hardlink = smb2_create_hardlink,
 609         .open = smb2_open_file,
 610         .set_fid = smb2_set_fid,
 611         .close = smb2_close_file,
 612         .flush = smb2_flush_file,
 613         .async_readv = smb2_async_readv,
 614         .async_writev = smb2_async_writev,
 615         .sync_read = smb2_sync_read,
 616         .sync_write = smb2_sync_write,
 617         .query_dir_first = smb2_query_dir_first,
 618         .query_dir_next = smb2_query_dir_next,
 619         .close_dir = smb2_close_dir,
 620         .calc_smb_size = smb2_calc_size,
 621         .is_status_pending = smb2_is_status_pending,
 622         .oplock_response = smb2_oplock_response,
 623         .queryfs = smb2_queryfs,
 624         .mand_lock = smb2_mand_lock,
 625         .mand_unlock_range = smb2_unlock_range,
 626         .push_mand_locks = smb2_push_mandatory_locks,
 627         .get_lease_key = smb2_get_lease_key,
 628         .set_lease_key = smb2_set_lease_key,
 629         .new_lease_key = smb2_new_lease_key,
 630         .calc_signature = smb2_calc_signature,
 631         .dir_needs_close = smb2_dir_needs_close,
 632 };
 633
 634
 635 struct smb_version_operations smb30_operations = {
 636         .compare_fids = smb2_compare_fids,
 637         .setup_request = smb2_setup_request,
 638         .setup_async_request = smb2_setup_async_request,
 639         .check_receive = smb2_check_receive,
 640         .add_credits = smb2_add_credits,
 641         .set_credits = smb2_set_credits,
 642         .get_credits_field = smb2_get_credits_field,
 643         .get_credits = smb2_get_credits,
 644         .get_next_mid = smb2_get_next_mid,
 645         .read_data_offset = smb2_read_data_offset,
 646         .read_data_length = smb2_read_data_length,
 647         .map_error = map_smb2_to_linux_error,
 648         .find_mid = smb2_find_mid,
 649         .check_message = smb2_check_message,
 650         .dump_detail = smb2_dump_detail,
 651         .clear_stats = smb2_clear_stats,
 652         .print_stats = smb2_print_stats,
 653         .is_oplock_break = smb2_is_valid_oplock_break,
 654         .need_neg = smb2_need_neg,
 655         .negotiate = smb2_negotiate,
 656         .negotiate_wsize = smb2_negotiate_wsize,
 657         .negotiate_rsize = smb2_negotiate_rsize,
 658         .sess_setup = SMB2_sess_setup,
 659         .logoff = SMB2_logoff,
 660         .tree_connect = SMB2_tcon,
 661         .tree_disconnect = SMB2_tdis,
 662         .is_path_accessible = smb2_is_path_accessible,
 663         .can_echo = smb2_can_echo,
 664         .echo = SMB2_echo,
 665         .query_path_info = smb2_query_path_info,
 666         .get_srv_inum = smb2_get_srv_inum,
 667         .query_file_info = smb2_query_file_info,
 668         .set_path_size = smb2_set_path_size,
 669         .set_file_size = smb2_set_file_size,
 670         .set_file_info = smb2_set_file_info,
 671         .mkdir = smb2_mkdir,
 672         .mkdir_setinfo = smb2_mkdir_setinfo,
 673         .rmdir = smb2_rmdir,
 674         .unlink = smb2_unlink,
 675         .rename = smb2_rename_path,
 676         .create_hardlink = smb2_create_hardlink,
 677         .open = smb2_open_file,
 678         .set_fid = smb2_set_fid,
 679         .close = smb2_close_file,
 680         .flush = smb2_flush_file,
 681         .async_readv = smb2_async_readv,
 682         .async_writev = smb2_async_writev,
 683         .sync_read = smb2_sync_read,
 684         .sync_write = smb2_sync_write,
 685         .query_dir_first = smb2_query_dir_first,
 686         .query_dir_next = smb2_query_dir_next,
 687         .close_dir = smb2_close_dir,
 688         .calc_smb_size = smb2_calc_size,
 689         .is_status_pending = smb2_is_status_pending,
 690         .oplock_response = smb2_oplock_response,
 691         .queryfs = smb2_queryfs,
 692         .mand_lock = smb2_mand_lock,
 693         .mand_unlock_range = smb2_unlock_range,
 694         .push_mand_locks = smb2_push_mandatory_locks,
 695         .get_lease_key = smb2_get_lease_key,
 696         .set_lease_key = smb2_set_lease_key,
 697         .new_lease_key = smb2_new_lease_key,
 698         .calc_signature = smb3_calc_signature,
 699         .dir_needs_close = smb2_dir_needs_close,
 700 };
 701
 702 struct smb_version_values smb20_values = {
 703         .version_string = SMB20_VERSION_STRING,
 704         .protocol_id = SMB20_PROT_ID,
 705         .req_capabilities = 0, /* MBZ */
 706         .large_lock_type = 0,
 707         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 708         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 709         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 710         .header_size = sizeof(struct smb2_hdr),
 711         .max_header_size = MAX_SMB2_HDR_SIZE,
 712         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 713         .lock_cmd = SMB2_LOCK,
 714         .cap_unix = 0,
 715         .cap_nt_find = SMB2_NT_FIND,
 716         .cap_large_files = SMB2_LARGE_FILES,
 717         .oplock_read = SMB2_OPLOCK_LEVEL_II,
 718 };
 719
 720 struct smb_version_values smb21_values = {
 721         .version_string = SMB21_VERSION_STRING,
 722         .protocol_id = SMB21_PROT_ID,
 723         .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
 724         .large_lock_type = 0,
 725         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 726         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 727         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 728         .header_size = sizeof(struct smb2_hdr),
 729         .max_header_size = MAX_SMB2_HDR_SIZE,
 730         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 731         .lock_cmd = SMB2_LOCK,
 732         .cap_unix = 0,
 733         .cap_nt_find = SMB2_NT_FIND,
 734         .cap_large_files = SMB2_LARGE_FILES,
 735         .oplock_read = SMB2_OPLOCK_LEVEL_II,
 736 };
 737
 738 struct smb_version_values smb30_values = {
 739         .version_string = SMB30_VERSION_STRING,
 740         .protocol_id = SMB30_PROT_ID,
 741         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
 742         .large_lock_type = 0,
 743         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
 744         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
 745         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
 746         .header_size = sizeof(struct smb2_hdr),
 747         .max_header_size = MAX_SMB2_HDR_SIZE,
 748         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
 749         .lock_cmd = SMB2_LOCK,
 750         .cap_unix = 0,
 751         .cap_nt_find = SMB2_NT_FIND,
 752         .cap_large_files = SMB2_LARGE_FILES,
 753         .oplock_read = SMB2_OPLOCK_LEVEL_II,
 754 };