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