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 "cifs_unicode.h"
  28 #include "smb2status.h"
  29 #include "smb2glob.h"
  30
  31 static int
  32 change_conf(struct TCP_Server_Info *server)
  33 {
  34         server->credits += server->echo_credits + server->oplock_credits;
  35         server->oplock_credits = server->echo_credits = 0;
  36         switch (server->credits) {
  37         case 0:
  38                 return -1;
  39         case 1:
  40                 server->echoes = false;
  41                 server->oplocks = false;
  42                 cifs_dbg(VFS, "disabling echoes and oplocks\n");
  43                 break;
  44         case 2:
  45                 server->echoes = true;
  46                 server->oplocks = false;
  47                 server->echo_credits = 1;
  48                 cifs_dbg(FYI, "disabling oplocks\n");
  49                 break;
  50         default:
  51                 server->echoes = true;
  52                 server->oplocks = true;
  53                 server->echo_credits = 1;
  54                 server->oplock_credits = 1;
  55         }
  56         server->credits -= server->echo_credits + server->oplock_credits;
  57         return 0;
  58 }
  59
  60 static void
  61 smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
  62                  const int optype)
  63 {
  64         int *val, rc = 0;
  65         spin_lock(&server->req_lock);
  66         val = server->ops->get_credits_field(server, optype);
  67         *val += add;
  68         server->in_flight--;
  69         if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
  70                 rc = change_conf(server);
  71         /*
  72          * Sometimes server returns 0 credits on oplock break ack - we need to
  73          * rebalance credits in this case.
  74          */
  75         else if (server->in_flight > 0 && server->oplock_credits == 0 &&
  76                  server->oplocks) {
  77                 if (server->credits > 1) {
  78                         server->credits--;
  79                         server->oplock_credits++;
  80                 }
  81         }
  82         spin_unlock(&server->req_lock);
  83         wake_up(&server->request_q);
  84         if (rc)
  85                 cifs_reconnect(server);
  86 }
  87
  88 static void
  89 smb2_set_credits(struct TCP_Server_Info *server, const int val)
  90 {
  91         spin_lock(&server->req_lock);
  92         server->credits = val;
  93         spin_unlock(&server->req_lock);
  94 }
  95
  96 static int *
  97 smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
  98 {
  99         switch (optype) {
 100         case CIFS_ECHO_OP:
 101                 return &server->echo_credits;
 102         case CIFS_OBREAK_OP:
 103                 return &server->oplock_credits;
 104         default:
 105                 return &server->credits;
 106         }
 107 }
 108
 109 static unsigned int
 110 smb2_get_credits(struct mid_q_entry *mid)
 111 {
 112         return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
 113 }
 114
 115 static __u64
 116 smb2_get_next_mid(struct TCP_Server_Info *server)
 117 {
 118         __u64 mid;
 119         /* for SMB2 we need the current value */
 120         spin_lock(&GlobalMid_Lock);
 121         mid = server->CurrentMid++;
 122         spin_unlock(&GlobalMid_Lock);
 123         return mid;
 124 }
 125
 126 static struct mid_q_entry *
 127 smb2_find_mid(struct TCP_Server_Info *server, char *buf)
 128 {
 129         struct mid_q_entry *mid;
 130         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 131
 132         spin_lock(&GlobalMid_Lock);
 133         list_for_each_entry(mid, &server->pending_mid_q, qhead) {
 134                 if ((mid->mid == hdr->MessageId) &&
 135                     (mid->mid_state == MID_REQUEST_SUBMITTED) &&
 136                     (mid->command == hdr->Command)) {
 137                         spin_unlock(&GlobalMid_Lock);
 138                         return mid;
 139                 }
 140         }
 141         spin_unlock(&GlobalMid_Lock);
 142         return NULL;
 143 }
 144
 145 static void
 146 smb2_dump_detail(void *buf)
 147 {
 148 #ifdef CONFIG_CIFS_DEBUG2
 149         struct smb2_hdr *smb = (struct smb2_hdr *)buf;
 150
 151         cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
 152                  smb->Command, smb->Status, smb->Flags, smb->MessageId,
 153                  smb->ProcessId);
 154         cifs_dbg(VFS, "smb buf %p len %u\n", smb, smb2_calc_size(smb));
 155 #endif
 156 }
 157
 158 static bool
 159 smb2_need_neg(struct TCP_Server_Info *server)
 160 {
 161         return server->max_read == 0;
 162 }
 163
 164 static int
 165 smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
 166 {
 167         int rc;
 168         ses->server->CurrentMid = 0;
 169         rc = SMB2_negotiate(xid, ses);
 170         /* BB we probably don't need to retry with modern servers */
 171         if (rc == -EAGAIN)
 172                 rc = -EHOSTDOWN;
 173         return rc;
 174 }
 175
 176 static unsigned int
 177 smb2_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *volume_info)
 178 {
 179         struct TCP_Server_Info *server = tcon->ses->server;
 180         unsigned int wsize;
 181
 182         /* start with specified wsize, or default */
 183         wsize = volume_info->wsize ? volume_info->wsize : CIFS_DEFAULT_IOSIZE;
 184         wsize = min_t(unsigned int, wsize, server->max_write);
 185         /*
 186          * limit write size to 2 ** 16, because we don't support multicredit
 187          * requests now.
 188          */
 189         wsize = min_t(unsigned int, wsize, 2 << 15);
 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         /*
 204          * limit write size to 2 ** 16, because we don't support multicredit
 205          * requests now.
 206          */
 207         rsize = min_t(unsigned int, rsize, 2 << 15);
 208
 209         return rsize;
 210 }
 211
 212 #ifdef CONFIG_CIFS_STATS2
 213 static int
 214 SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
 215 {
 216         int rc;
 217         unsigned int ret_data_len = 0;
 218         struct network_interface_info_ioctl_rsp *out_buf;
 219
 220         rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
 221                         FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
 222                         NULL /* no data input */, 0 /* no data input */,
 223                         (char **)&out_buf, &ret_data_len);
 224
 225         if ((rc == 0)  && (ret_data_len > 0)) {
 226                 /* Dump info on first interface */
 227                 cifs_dbg(FYI, "Adapter Capability 0x%x\t",
 228                         le32_to_cpu(out_buf->Capability));
 229                 cifs_dbg(FYI, "Link Speed %lld\n",
 230                         le64_to_cpu(out_buf->LinkSpeed));
 231         } else
 232                 cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
 233
 234         return rc;
 235 }
 236 #endif /* STATS2 */
 237
 238 static void
 239 smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 240 {
 241         int rc;
 242         __le16 srch_path = 0; /* Null - open root of share */
 243         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 244         struct cifs_open_parms oparms;
 245         struct cifs_fid fid;
 246
 247         oparms.tcon = tcon;
 248         oparms.desired_access = FILE_READ_ATTRIBUTES;
 249         oparms.disposition = FILE_OPEN;
 250         oparms.create_options = 0;
 251         oparms.fid = &fid;
 252         oparms.reconnect = false;
 253
 254         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 255         if (rc)
 256                 return;
 257
 258 #ifdef CONFIG_CIFS_STATS2
 259         SMB3_request_interfaces(xid, tcon);
 260 #endif /* STATS2 */
 261
 262         SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 263                         FS_ATTRIBUTE_INFORMATION);
 264         SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 265                         FS_DEVICE_INFORMATION);
 266         SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 267                         FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
 268         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 269         return;
 270 }
 271
 272 static void
 273 smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
 274 {
 275         int rc;
 276         __le16 srch_path = 0; /* Null - open root of share */
 277         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 278         struct cifs_open_parms oparms;
 279         struct cifs_fid fid;
 280
 281         oparms.tcon = tcon;
 282         oparms.desired_access = FILE_READ_ATTRIBUTES;
 283         oparms.disposition = FILE_OPEN;
 284         oparms.create_options = 0;
 285         oparms.fid = &fid;
 286         oparms.reconnect = false;
 287
 288         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 289         if (rc)
 290                 return;
 291
 292         SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 293                         FS_ATTRIBUTE_INFORMATION);
 294         SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 295                         FS_DEVICE_INFORMATION);
 296         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 297         return;
 298 }
 299
 300 static int
 301 smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
 302                         struct cifs_sb_info *cifs_sb, const char *full_path)
 303 {
 304         int rc;
 305         __le16 *utf16_path;
 306         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 307         struct cifs_open_parms oparms;
 308         struct cifs_fid fid;
 309
 310         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 311         if (!utf16_path)
 312                 return -ENOMEM;
 313
 314         oparms.tcon = tcon;
 315         oparms.desired_access = FILE_READ_ATTRIBUTES;
 316         oparms.disposition = FILE_OPEN;
 317         oparms.create_options = 0;
 318         oparms.fid = &fid;
 319         oparms.reconnect = false;
 320
 321         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 322         if (rc) {
 323                 kfree(utf16_path);
 324                 return rc;
 325         }
 326
 327         rc = SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 328         kfree(utf16_path);
 329         return rc;
 330 }
 331
 332 static int
 333 smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
 334                   struct cifs_sb_info *cifs_sb, const char *full_path,
 335                   u64 *uniqueid, FILE_ALL_INFO *data)
 336 {
 337         *uniqueid = le64_to_cpu(data->IndexNumber);
 338         return 0;
 339 }
 340
 341 static int
 342 smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
 343                      struct cifs_fid *fid, FILE_ALL_INFO *data)
 344 {
 345         int rc;
 346         struct smb2_file_all_info *smb2_data;
 347
 348         smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
 349                             GFP_KERNEL);
 350         if (smb2_data == NULL)
 351                 return -ENOMEM;
 352
 353         rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
 354                              smb2_data);
 355         if (!rc)
 356                 move_smb2_info_to_cifs(data, smb2_data);
 357         kfree(smb2_data);
 358         return rc;
 359 }
 360
 361 static bool
 362 smb2_can_echo(struct TCP_Server_Info *server)
 363 {
 364         return server->echoes;
 365 }
 366
 367 static void
 368 smb2_clear_stats(struct cifs_tcon *tcon)
 369 {
 370 #ifdef CONFIG_CIFS_STATS
 371         int i;
 372         for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
 373                 atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
 374                 atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 375         }
 376 #endif
 377 }
 378
 379 static void
 380 smb2_dump_share_caps(struct seq_file *m, struct cifs_tcon *tcon)
 381 {
 382         seq_puts(m, "\n\tShare Capabilities:");
 383         if (tcon->capabilities & SMB2_SHARE_CAP_DFS)
 384                 seq_puts(m, " DFS,");
 385         if (tcon->capabilities & SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY)
 386                 seq_puts(m, " CONTINUOUS AVAILABILITY,");
 387         if (tcon->capabilities & SMB2_SHARE_CAP_SCALEOUT)
 388                 seq_puts(m, " SCALEOUT,");
 389         if (tcon->capabilities & SMB2_SHARE_CAP_CLUSTER)
 390                 seq_puts(m, " CLUSTER,");
 391         if (tcon->capabilities & SMB2_SHARE_CAP_ASYMMETRIC)
 392                 seq_puts(m, " ASYMMETRIC,");
 393         if (tcon->capabilities == 0)
 394                 seq_puts(m, " None");
 395         if (tcon->ss_flags & SSINFO_FLAGS_ALIGNED_DEVICE)
 396                 seq_puts(m, " Aligned,");
 397         if (tcon->ss_flags & SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE)
 398                 seq_puts(m, " Partition Aligned,");
 399         if (tcon->ss_flags & SSINFO_FLAGS_NO_SEEK_PENALTY)
 400                 seq_puts(m, " SSD,");
 401         if (tcon->ss_flags & SSINFO_FLAGS_TRIM_ENABLED)
 402                 seq_puts(m, " TRIM-support,");
 403
 404         seq_printf(m, "\tShare Flags: 0x%x", tcon->share_flags);
 405         if (tcon->perf_sector_size)
 406                 seq_printf(m, "\tOptimal sector size: 0x%x",
 407                            tcon->perf_sector_size);
 408 }
 409
 410 static void
 411 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 412 {
 413 #ifdef CONFIG_CIFS_STATS
 414         atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
 415         atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 416         seq_printf(m, "\nNegotiates: %d sent %d failed",
 417                    atomic_read(&sent[SMB2_NEGOTIATE_HE]),
 418                    atomic_read(&failed[SMB2_NEGOTIATE_HE]));
 419         seq_printf(m, "\nSessionSetups: %d sent %d failed",
 420                    atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
 421                    atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
 422         seq_printf(m, "\nLogoffs: %d sent %d failed",
 423                    atomic_read(&sent[SMB2_LOGOFF_HE]),
 424                    atomic_read(&failed[SMB2_LOGOFF_HE]));
 425         seq_printf(m, "\nTreeConnects: %d sent %d failed",
 426                    atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
 427                    atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
 428         seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
 429                    atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
 430                    atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
 431         seq_printf(m, "\nCreates: %d sent %d failed",
 432                    atomic_read(&sent[SMB2_CREATE_HE]),
 433                    atomic_read(&failed[SMB2_CREATE_HE]));
 434         seq_printf(m, "\nCloses: %d sent %d failed",
 435                    atomic_read(&sent[SMB2_CLOSE_HE]),
 436                    atomic_read(&failed[SMB2_CLOSE_HE]));
 437         seq_printf(m, "\nFlushes: %d sent %d failed",
 438                    atomic_read(&sent[SMB2_FLUSH_HE]),
 439                    atomic_read(&failed[SMB2_FLUSH_HE]));
 440         seq_printf(m, "\nReads: %d sent %d failed",
 441                    atomic_read(&sent[SMB2_READ_HE]),
 442                    atomic_read(&failed[SMB2_READ_HE]));
 443         seq_printf(m, "\nWrites: %d sent %d failed",
 444                    atomic_read(&sent[SMB2_WRITE_HE]),
 445                    atomic_read(&failed[SMB2_WRITE_HE]));
 446         seq_printf(m, "\nLocks: %d sent %d failed",
 447                    atomic_read(&sent[SMB2_LOCK_HE]),
 448                    atomic_read(&failed[SMB2_LOCK_HE]));
 449         seq_printf(m, "\nIOCTLs: %d sent %d failed",
 450                    atomic_read(&sent[SMB2_IOCTL_HE]),
 451                    atomic_read(&failed[SMB2_IOCTL_HE]));
 452         seq_printf(m, "\nCancels: %d sent %d failed",
 453                    atomic_read(&sent[SMB2_CANCEL_HE]),
 454                    atomic_read(&failed[SMB2_CANCEL_HE]));
 455         seq_printf(m, "\nEchos: %d sent %d failed",
 456                    atomic_read(&sent[SMB2_ECHO_HE]),
 457                    atomic_read(&failed[SMB2_ECHO_HE]));
 458         seq_printf(m, "\nQueryDirectories: %d sent %d failed",
 459                    atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
 460                    atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
 461         seq_printf(m, "\nChangeNotifies: %d sent %d failed",
 462                    atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
 463                    atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
 464         seq_printf(m, "\nQueryInfos: %d sent %d failed",
 465                    atomic_read(&sent[SMB2_QUERY_INFO_HE]),
 466                    atomic_read(&failed[SMB2_QUERY_INFO_HE]));
 467         seq_printf(m, "\nSetInfos: %d sent %d failed",
 468                    atomic_read(&sent[SMB2_SET_INFO_HE]),
 469                    atomic_read(&failed[SMB2_SET_INFO_HE]));
 470         seq_printf(m, "\nOplockBreaks: %d sent %d failed",
 471                    atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
 472                    atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
 473 #endif
 474 }
 475
 476 static void
 477 smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
 478 {
 479         struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode);
 480         struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 481
 482         cfile->fid.persistent_fid = fid->persistent_fid;
 483         cfile->fid.volatile_fid = fid->volatile_fid;
 484         server->ops->set_oplock_level(cinode, oplock, fid->epoch,
 485                                       &fid->purge_cache);
 486         cinode->can_cache_brlcks = CIFS_CACHE_WRITE(cinode);
 487 }
 488
 489 static void
 490 smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
 491                 struct cifs_fid *fid)
 492 {
 493         SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 494 }
 495
 496 static int
 497 SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
 498                      u64 persistent_fid, u64 volatile_fid,
 499                      struct copychunk_ioctl *pcchunk)
 500 {
 501         int rc;
 502         unsigned int ret_data_len;
 503         struct resume_key_req *res_key;
 504
 505         rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
 506                         FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
 507                         NULL, 0 /* no input */,
 508                         (char **)&res_key, &ret_data_len);
 509
 510         if (rc) {
 511                 cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
 512                 goto req_res_key_exit;
 513         }
 514         if (ret_data_len < sizeof(struct resume_key_req)) {
 515                 cifs_dbg(VFS, "Invalid refcopy resume key length\n");
 516                 rc = -EINVAL;
 517                 goto req_res_key_exit;
 518         }
 519         memcpy(pcchunk->SourceKey, res_key->ResumeKey, COPY_CHUNK_RES_KEY_SIZE);
 520
 521 req_res_key_exit:
 522         kfree(res_key);
 523         return rc;
 524 }
 525
 526 static int
 527 smb2_clone_range(const unsigned int xid,
 528                         struct cifsFileInfo *srcfile,
 529                         struct cifsFileInfo *trgtfile, u64 src_off,
 530                         u64 len, u64 dest_off)
 531 {
 532         int rc;
 533         unsigned int ret_data_len;
 534         struct copychunk_ioctl *pcchunk;
 535         char *retbuf = NULL;
 536
 537         pcchunk = kmalloc(sizeof(struct copychunk_ioctl), GFP_KERNEL);
 538
 539         if (pcchunk == NULL)
 540                 return -ENOMEM;
 541
 542         cifs_dbg(FYI, "in smb2_clone_range - about to call request res key\n");
 543         /* Request a key from the server to identify the source of the copy */
 544         rc = SMB2_request_res_key(xid, tlink_tcon(srcfile->tlink),
 545                                 srcfile->fid.persistent_fid,
 546                                 srcfile->fid.volatile_fid, pcchunk);
 547
 548         /* Note: request_res_key sets res_key null only if rc !=0 */
 549         if (rc)
 550                 return rc;
 551
 552         /* For now array only one chunk long, will make more flexible later */
 553         pcchunk->ChunkCount = __constant_cpu_to_le32(1);
 554         pcchunk->Reserved = 0;
 555         pcchunk->SourceOffset = cpu_to_le64(src_off);
 556         pcchunk->TargetOffset = cpu_to_le64(dest_off);
 557         pcchunk->Length = cpu_to_le32(len);
 558         pcchunk->Reserved2 = 0;
 559
 560         /* Request that server copy to target from src file identified by key */
 561         rc = SMB2_ioctl(xid, tlink_tcon(trgtfile->tlink),
 562                         trgtfile->fid.persistent_fid,
 563                         trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
 564                         true /* is_fsctl */, (char *)pcchunk,
 565                         sizeof(struct copychunk_ioctl), &retbuf, &ret_data_len);
 566
 567         /* BB need to special case rc = EINVAL to alter chunk size */
 568
 569         cifs_dbg(FYI, "rc %d data length out %d\n", rc, ret_data_len);
 570
 571         kfree(pcchunk);
 572         return rc;
 573 }
 574
 575 static int
 576 smb2_flush_file(const unsigned int xid, struct cifs_tcon *tcon,
 577                 struct cifs_fid *fid)
 578 {
 579         return SMB2_flush(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 580 }
 581
 582 static unsigned int
 583 smb2_read_data_offset(char *buf)
 584 {
 585         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 586         return rsp->DataOffset;
 587 }
 588
 589 static unsigned int
 590 smb2_read_data_length(char *buf)
 591 {
 592         struct smb2_read_rsp *rsp = (struct smb2_read_rsp *)buf;
 593         return le32_to_cpu(rsp->DataLength);
 594 }
 595
 596
 597 static int
 598 smb2_sync_read(const unsigned int xid, struct cifsFileInfo *cfile,
 599                struct cifs_io_parms *parms, unsigned int *bytes_read,
 600                char **buf, int *buf_type)
 601 {
 602         parms->persistent_fid = cfile->fid.persistent_fid;
 603         parms->volatile_fid = cfile->fid.volatile_fid;
 604         return SMB2_read(xid, parms, bytes_read, buf, buf_type);
 605 }
 606
 607 static int
 608 smb2_sync_write(const unsigned int xid, struct cifsFileInfo *cfile,
 609                 struct cifs_io_parms *parms, unsigned int *written,
 610                 struct kvec *iov, unsigned long nr_segs)
 611 {
 612
 613         parms->persistent_fid = cfile->fid.persistent_fid;
 614         parms->volatile_fid = cfile->fid.volatile_fid;
 615         return SMB2_write(xid, parms, written, iov, nr_segs);
 616 }
 617
 618 static int
 619 smb2_set_file_size(const unsigned int xid, struct cifs_tcon *tcon,
 620                    struct cifsFileInfo *cfile, __u64 size, bool set_alloc)
 621 {
 622         __le64 eof = cpu_to_le64(size);
 623         return SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
 624                             cfile->fid.volatile_fid, cfile->pid, &eof);
 625 }
 626
 627 static int
 628 smb2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
 629                    struct cifsFileInfo *cfile)
 630 {
 631         return SMB2_set_compression(xid, tcon, cfile->fid.persistent_fid,
 632                             cfile->fid.volatile_fid);
 633 }
 634
 635 static int
 636 smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
 637                      const char *path, struct cifs_sb_info *cifs_sb,
 638                      struct cifs_fid *fid, __u16 search_flags,
 639                      struct cifs_search_info *srch_inf)
 640 {
 641         __le16 *utf16_path;
 642         int rc;
 643         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 644         struct cifs_open_parms oparms;
 645
 646         utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
 647         if (!utf16_path)
 648                 return -ENOMEM;
 649
 650         oparms.tcon = tcon;
 651         oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
 652         oparms.disposition = FILE_OPEN;
 653         oparms.create_options = 0;
 654         oparms.fid = fid;
 655         oparms.reconnect = false;
 656
 657         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL);
 658         kfree(utf16_path);
 659         if (rc) {
 660                 cifs_dbg(VFS, "open dir failed\n");
 661                 return rc;
 662         }
 663
 664         srch_inf->entries_in_buffer = 0;
 665         srch_inf->index_of_last_entry = 0;
 666
 667         rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
 668                                   fid->volatile_fid, 0, srch_inf);
 669         if (rc) {
 670                 cifs_dbg(VFS, "query directory failed\n");
 671                 SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 672         }
 673         return rc;
 674 }
 675
 676 static int
 677 smb2_query_dir_next(const unsigned int xid, struct cifs_tcon *tcon,
 678                     struct cifs_fid *fid, __u16 search_flags,
 679                     struct cifs_search_info *srch_inf)
 680 {
 681         return SMB2_query_directory(xid, tcon, fid->persistent_fid,
 682                                     fid->volatile_fid, 0, srch_inf);
 683 }
 684
 685 static int
 686 smb2_close_dir(const unsigned int xid, struct cifs_tcon *tcon,
 687                struct cifs_fid *fid)
 688 {
 689         return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
 690 }
 691
 692 /*
 693 * If we negotiate SMB2 protocol and get STATUS_PENDING - update
 694 * the number of credits and return true. Otherwise - return false.
 695 */
 696 static bool
 697 smb2_is_status_pending(char *buf, struct TCP_Server_Info *server, int length)
 698 {
 699         struct smb2_hdr *hdr = (struct smb2_hdr *)buf;
 700
 701         if (hdr->Status != STATUS_PENDING)
 702                 return false;
 703
 704         if (!length) {
 705                 spin_lock(&server->req_lock);
 706                 server->credits += le16_to_cpu(hdr->CreditRequest);
 707                 spin_unlock(&server->req_lock);
 708                 wake_up(&server->request_q);
 709         }
 710
 711         return true;
 712 }
 713
 714 static int
 715 smb2_oplock_response(struct cifs_tcon *tcon, struct cifs_fid *fid,
 716                      struct cifsInodeInfo *cinode)
 717 {
 718         if (tcon->ses->server->capabilities & SMB2_GLOBAL_CAP_LEASING)
 719                 return SMB2_lease_break(0, tcon, cinode->lease_key,
 720                                         smb2_get_lease_state(cinode));
 721
 722         return SMB2_oplock_break(0, tcon, fid->persistent_fid,
 723                                  fid->volatile_fid,
 724                                  CIFS_CACHE_READ(cinode) ? 1 : 0);
 725 }
 726
 727 static int
 728 smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
 729              struct kstatfs *buf)
 730 {
 731         int rc;
 732         __le16 srch_path = 0; /* Null - open root of share */
 733         u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 734         struct cifs_open_parms oparms;
 735         struct cifs_fid fid;
 736
 737         oparms.tcon = tcon;
 738         oparms.desired_access = FILE_READ_ATTRIBUTES;
 739         oparms.disposition = FILE_OPEN;
 740         oparms.create_options = 0;
 741         oparms.fid = &fid;
 742         oparms.reconnect = false;
 743
 744         rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL);
 745         if (rc)
 746                 return rc;
 747         buf->f_type = SMB2_MAGIC_NUMBER;
 748         rc = SMB2_QFS_info(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 749                            buf);
 750         SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 751         return rc;
 752 }
 753
 754 static bool
 755 smb2_compare_fids(struct cifsFileInfo *ob1, struct cifsFileInfo *ob2)
 756 {
 757         return ob1->fid.persistent_fid == ob2->fid.persistent_fid &&
 758                ob1->fid.volatile_fid == ob2->fid.volatile_fid;
 759 }
 760
 761 static int
 762 smb2_mand_lock(const unsigned int xid, struct cifsFileInfo *cfile, __u64 offset,
 763                __u64 length, __u32 type, int lock, int unlock, bool wait)
 764 {
 765         if (unlock && !lock)
 766                 type = SMB2_LOCKFLAG_UNLOCK;
 767         return SMB2_lock(xid, tlink_tcon(cfile->tlink),
 768                          cfile->fid.persistent_fid, cfile->fid.volatile_fid,
 769                          current->tgid, length, offset, type, wait);
 770 }
 771
 772 static void
 773 smb2_get_lease_key(struct inode *inode, struct cifs_fid *fid)
 774 {
 775         memcpy(fid->lease_key, CIFS_I(inode)->lease_key, SMB2_LEASE_KEY_SIZE);
 776 }
 777
 778 static void
 779 smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
 780 {
 781         memcpy(CIFS_I(inode)->lease_key, fid->lease_key, SMB2_LEASE_KEY_SIZE);
 782 }
 783
 784 static void
 785 smb2_new_lease_key(struct cifs_fid *fid)
 786 {
 787         get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
 788 }
 789
 790 static int
 791 smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
 792                    const char *full_path, char **target_path,
 793                    struct cifs_sb_info *cifs_sb)
 794 {
 795         int rc;
 796         __le16 *utf16_path;
 797         __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 798         struct cifs_open_parms oparms;
 799         struct cifs_fid fid;
 800         struct smb2_err_rsp *err_buf = NULL;
 801         struct smb2_symlink_err_rsp *symlink;
 802         unsigned int sub_len, sub_offset;
 803
 804         cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
 805
 806         utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
 807         if (!utf16_path)
 808                 return -ENOMEM;
 809
 810         oparms.tcon = tcon;
 811         oparms.desired_access = FILE_READ_ATTRIBUTES;
 812         oparms.disposition = FILE_OPEN;
 813         oparms.create_options = 0;
 814         oparms.fid = &fid;
 815         oparms.reconnect = false;
 816
 817         rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, &err_buf);
 818
 819         if (!rc || !err_buf) {
 820                 kfree(utf16_path);
 821                 return -ENOENT;
 822         }
 823         /* open must fail on symlink - reset rc */
 824         rc = 0;
 825         symlink = (struct smb2_symlink_err_rsp *)err_buf->ErrorData;
 826         sub_len = le16_to_cpu(symlink->SubstituteNameLength);
 827         sub_offset = le16_to_cpu(symlink->SubstituteNameOffset);
 828         *target_path = cifs_strndup_from_utf16(
 829                                 (char *)symlink->PathBuffer + sub_offset,
 830                                 sub_len, true, cifs_sb->local_nls);
 831         if (!(*target_path)) {
 832                 kfree(utf16_path);
 833                 return -ENOMEM;
 834         }
 835         convert_delimiter(*target_path, '/');
 836         cifs_dbg(FYI, "%s: target path: %s\n", __func__, *target_path);
 837         kfree(utf16_path);
 838         return rc;
 839 }
 840
 841 static void
 842 smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 843                       unsigned int epoch, bool *purge_cache)
 844 {
 845         oplock &= 0xFF;
 846         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 847                 return;
 848         if (oplock == SMB2_OPLOCK_LEVEL_BATCH) {
 849                 cinode->oplock = CIFS_CACHE_RHW_FLG;
 850                 cifs_dbg(FYI, "Batch Oplock granted on inode %p\n",
 851                          &cinode->vfs_inode);
 852         } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) {
 853                 cinode->oplock = CIFS_CACHE_RW_FLG;
 854                 cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n",
 855                          &cinode->vfs_inode);
 856         } else if (oplock == SMB2_OPLOCK_LEVEL_II) {
 857                 cinode->oplock = CIFS_CACHE_READ_FLG;
 858                 cifs_dbg(FYI, "Level II Oplock granted on inode %p\n",
 859                          &cinode->vfs_inode);
 860         } else
 861                 cinode->oplock = 0;
 862 }
 863
 864 static void
 865 smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 866                        unsigned int epoch, bool *purge_cache)
 867 {
 868         char message[5] = {0};
 869
 870         oplock &= 0xFF;
 871         if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
 872                 return;
 873
 874         cinode->oplock = 0;
 875         if (oplock & SMB2_LEASE_READ_CACHING_HE) {
 876                 cinode->oplock |= CIFS_CACHE_READ_FLG;
 877                 strcat(message, "R");
 878         }
 879         if (oplock & SMB2_LEASE_HANDLE_CACHING_HE) {
 880                 cinode->oplock |= CIFS_CACHE_HANDLE_FLG;
 881                 strcat(message, "H");
 882         }
 883         if (oplock & SMB2_LEASE_WRITE_CACHING_HE) {
 884                 cinode->oplock |= CIFS_CACHE_WRITE_FLG;
 885                 strcat(message, "W");
 886         }
 887         if (!cinode->oplock)
 888                 strcat(message, "None");
 889         cifs_dbg(FYI, "%s Lease granted on inode %p\n", message,
 890                  &cinode->vfs_inode);
 891 }
 892
 893 static void
 894 smb3_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
 895                       unsigned int epoch, bool *purge_cache)
 896 {
 897         unsigned int old_oplock = cinode->oplock;
 898
 899         smb21_set_oplock_level(cinode, oplock, epoch, purge_cache);
 900
 901         if (purge_cache) {
 902                 *purge_cache = false;
 903                 if (old_oplock == CIFS_CACHE_READ_FLG) {
 904                         if (cinode->oplock == CIFS_CACHE_READ_FLG &&
 905                             (epoch - cinode->epoch > 0))
 906                                 *purge_cache = true;
 907                         else if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 908                                  (epoch - cinode->epoch > 1))
 909                                 *purge_cache = true;
 910                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 911                                  (epoch - cinode->epoch > 1))
 912                                 *purge_cache = true;
 913                         else if (cinode->oplock == 0 &&
 914                                  (epoch - cinode->epoch > 0))
 915                                 *purge_cache = true;
 916                 } else if (old_oplock == CIFS_CACHE_RH_FLG) {
 917                         if (cinode->oplock == CIFS_CACHE_RH_FLG &&
 918                             (epoch - cinode->epoch > 0))
 919                                 *purge_cache = true;
 920                         else if (cinode->oplock == CIFS_CACHE_RHW_FLG &&
 921                                  (epoch - cinode->epoch > 1))
 922                                 *purge_cache = true;
 923                 }
 924                 cinode->epoch = epoch;
 925         }
 926 }
 927
 928 static bool
 929 smb2_is_read_op(__u32 oplock)
 930 {
 931         return oplock == SMB2_OPLOCK_LEVEL_II;
 932 }
 933
 934 static bool
 935 smb21_is_read_op(__u32 oplock)
 936 {
 937         return (oplock & SMB2_LEASE_READ_CACHING_HE) &&
 938                !(oplock & SMB2_LEASE_WRITE_CACHING_HE);
 939 }
 940
 941 static __le32
 942 map_oplock_to_lease(u8 oplock)
 943 {
 944         if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE)
 945                 return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING;
 946         else if (oplock == SMB2_OPLOCK_LEVEL_II)
 947                 return SMB2_LEASE_READ_CACHING;
 948         else if (oplock == SMB2_OPLOCK_LEVEL_BATCH)
 949                 return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING |
 950                        SMB2_LEASE_WRITE_CACHING;
 951         return 0;
 952 }
 953
 954 static char *
 955 smb2_create_lease_buf(u8 *lease_key, u8 oplock)
 956 {
 957         struct create_lease *buf;
 958
 959         buf = kzalloc(sizeof(struct create_lease), GFP_KERNEL);
 960         if (!buf)
 961                 return NULL;
 962
 963         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 964         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 965         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 966
 967         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 968                                         (struct create_lease, lcontext));
 969         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context));
 970         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 971                                 (struct create_lease, Name));
 972         buf->ccontext.NameLength = cpu_to_le16(4);
 973         buf->Name[0] = 'R';
 974         buf->Name[1] = 'q';
 975         buf->Name[2] = 'L';
 976         buf->Name[3] = 's';
 977         return (char *)buf;
 978 }
 979
 980 static char *
 981 smb3_create_lease_buf(u8 *lease_key, u8 oplock)
 982 {
 983         struct create_lease_v2 *buf;
 984
 985         buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL);
 986         if (!buf)
 987                 return NULL;
 988
 989         buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key));
 990         buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8)));
 991         buf->lcontext.LeaseState = map_oplock_to_lease(oplock);
 992
 993         buf->ccontext.DataOffset = cpu_to_le16(offsetof
 994                                         (struct create_lease_v2, lcontext));
 995         buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2));
 996         buf->ccontext.NameOffset = cpu_to_le16(offsetof
 997                                 (struct create_lease_v2, Name));
 998         buf->ccontext.NameLength = cpu_to_le16(4);
 999         buf->Name[0] = 'R';
1000         buf->Name[1] = 'q';
1001         buf->Name[2] = 'L';
1002         buf->Name[3] = 's';
1003         return (char *)buf;
1004 }
1005
1006 static __u8
1007 smb2_parse_lease_buf(void *buf, unsigned int *epoch)
1008 {
1009         struct create_lease *lc = (struct create_lease *)buf;
1010
1011         *epoch = 0; /* not used */
1012         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1013                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1014         return le32_to_cpu(lc->lcontext.LeaseState);
1015 }
1016
1017 static __u8
1018 smb3_parse_lease_buf(void *buf, unsigned int *epoch)
1019 {
1020         struct create_lease_v2 *lc = (struct create_lease_v2 *)buf;
1021
1022         *epoch = le16_to_cpu(lc->lcontext.Epoch);
1023         if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
1024                 return SMB2_OPLOCK_LEVEL_NOCHANGE;
1025         return le32_to_cpu(lc->lcontext.LeaseState);
1026 }
1027
1028 struct smb_version_operations smb20_operations = {
1029         .compare_fids = smb2_compare_fids,
1030         .setup_request = smb2_setup_request,
1031         .setup_async_request = smb2_setup_async_request,
1032         .check_receive = smb2_check_receive,
1033         .add_credits = smb2_add_credits,
1034         .set_credits = smb2_set_credits,
1035         .get_credits_field = smb2_get_credits_field,
1036         .get_credits = smb2_get_credits,
1037         .get_next_mid = smb2_get_next_mid,
1038         .read_data_offset = smb2_read_data_offset,
1039         .read_data_length = smb2_read_data_length,
1040         .map_error = map_smb2_to_linux_error,
1041         .find_mid = smb2_find_mid,
1042         .check_message = smb2_check_message,
1043         .dump_detail = smb2_dump_detail,
1044         .clear_stats = smb2_clear_stats,
1045         .print_stats = smb2_print_stats,
1046         .is_oplock_break = smb2_is_valid_oplock_break,
1047         .need_neg = smb2_need_neg,
1048         .negotiate = smb2_negotiate,
1049         .negotiate_wsize = smb2_negotiate_wsize,
1050         .negotiate_rsize = smb2_negotiate_rsize,
1051         .sess_setup = SMB2_sess_setup,
1052         .logoff = SMB2_logoff,
1053         .tree_connect = SMB2_tcon,
1054         .tree_disconnect = SMB2_tdis,
1055         .qfs_tcon = smb2_qfs_tcon,
1056         .is_path_accessible = smb2_is_path_accessible,
1057         .can_echo = smb2_can_echo,
1058         .echo = SMB2_echo,
1059         .query_path_info = smb2_query_path_info,
1060         .get_srv_inum = smb2_get_srv_inum,
1061         .query_file_info = smb2_query_file_info,
1062         .set_path_size = smb2_set_path_size,
1063         .set_file_size = smb2_set_file_size,
1064         .set_file_info = smb2_set_file_info,
1065         .set_compression = smb2_set_compression,
1066         .mkdir = smb2_mkdir,
1067         .mkdir_setinfo = smb2_mkdir_setinfo,
1068         .rmdir = smb2_rmdir,
1069         .unlink = smb2_unlink,
1070         .rename = smb2_rename_path,
1071         .create_hardlink = smb2_create_hardlink,
1072         .query_symlink = smb2_query_symlink,
1073         .open = smb2_open_file,
1074         .set_fid = smb2_set_fid,
1075         .close = smb2_close_file,
1076         .flush = smb2_flush_file,
1077         .async_readv = smb2_async_readv,
1078         .async_writev = smb2_async_writev,
1079         .sync_read = smb2_sync_read,
1080         .sync_write = smb2_sync_write,
1081         .query_dir_first = smb2_query_dir_first,
1082         .query_dir_next = smb2_query_dir_next,
1083         .close_dir = smb2_close_dir,
1084         .calc_smb_size = smb2_calc_size,
1085         .is_status_pending = smb2_is_status_pending,
1086         .oplock_response = smb2_oplock_response,
1087         .queryfs = smb2_queryfs,
1088         .mand_lock = smb2_mand_lock,
1089         .mand_unlock_range = smb2_unlock_range,
1090         .push_mand_locks = smb2_push_mandatory_locks,
1091         .get_lease_key = smb2_get_lease_key,
1092         .set_lease_key = smb2_set_lease_key,
1093         .new_lease_key = smb2_new_lease_key,
1094         .calc_signature = smb2_calc_signature,
1095         .is_read_op = smb2_is_read_op,
1096         .set_oplock_level = smb2_set_oplock_level,
1097         .create_lease_buf = smb2_create_lease_buf,
1098         .parse_lease_buf = smb2_parse_lease_buf,
1099         .clone_range = smb2_clone_range,
1100 };
1101
1102 struct smb_version_operations smb21_operations = {
1103         .compare_fids = smb2_compare_fids,
1104         .setup_request = smb2_setup_request,
1105         .setup_async_request = smb2_setup_async_request,
1106         .check_receive = smb2_check_receive,
1107         .add_credits = smb2_add_credits,
1108         .set_credits = smb2_set_credits,
1109         .get_credits_field = smb2_get_credits_field,
1110         .get_credits = smb2_get_credits,
1111         .get_next_mid = smb2_get_next_mid,
1112         .read_data_offset = smb2_read_data_offset,
1113         .read_data_length = smb2_read_data_length,
1114         .map_error = map_smb2_to_linux_error,
1115         .find_mid = smb2_find_mid,
1116         .check_message = smb2_check_message,
1117         .dump_detail = smb2_dump_detail,
1118         .clear_stats = smb2_clear_stats,
1119         .print_stats = smb2_print_stats,
1120         .is_oplock_break = smb2_is_valid_oplock_break,
1121         .need_neg = smb2_need_neg,
1122         .negotiate = smb2_negotiate,
1123         .negotiate_wsize = smb2_negotiate_wsize,
1124         .negotiate_rsize = smb2_negotiate_rsize,
1125         .sess_setup = SMB2_sess_setup,
1126         .logoff = SMB2_logoff,
1127         .tree_connect = SMB2_tcon,
1128         .tree_disconnect = SMB2_tdis,
1129         .qfs_tcon = smb2_qfs_tcon,
1130         .is_path_accessible = smb2_is_path_accessible,
1131         .can_echo = smb2_can_echo,
1132         .echo = SMB2_echo,
1133         .query_path_info = smb2_query_path_info,
1134         .get_srv_inum = smb2_get_srv_inum,
1135         .query_file_info = smb2_query_file_info,
1136         .set_path_size = smb2_set_path_size,
1137         .set_file_size = smb2_set_file_size,
1138         .set_file_info = smb2_set_file_info,
1139         .set_compression = smb2_set_compression,
1140         .mkdir = smb2_mkdir,
1141         .mkdir_setinfo = smb2_mkdir_setinfo,
1142         .rmdir = smb2_rmdir,
1143         .unlink = smb2_unlink,
1144         .rename = smb2_rename_path,
1145         .create_hardlink = smb2_create_hardlink,
1146         .query_symlink = smb2_query_symlink,
1147         .open = smb2_open_file,
1148         .set_fid = smb2_set_fid,
1149         .close = smb2_close_file,
1150         .flush = smb2_flush_file,
1151         .async_readv = smb2_async_readv,
1152         .async_writev = smb2_async_writev,
1153         .sync_read = smb2_sync_read,
1154         .sync_write = smb2_sync_write,
1155         .query_dir_first = smb2_query_dir_first,
1156         .query_dir_next = smb2_query_dir_next,
1157         .close_dir = smb2_close_dir,
1158         .calc_smb_size = smb2_calc_size,
1159         .is_status_pending = smb2_is_status_pending,
1160         .oplock_response = smb2_oplock_response,
1161         .queryfs = smb2_queryfs,
1162         .mand_lock = smb2_mand_lock,
1163         .mand_unlock_range = smb2_unlock_range,
1164         .push_mand_locks = smb2_push_mandatory_locks,
1165         .get_lease_key = smb2_get_lease_key,
1166         .set_lease_key = smb2_set_lease_key,
1167         .new_lease_key = smb2_new_lease_key,
1168         .calc_signature = smb2_calc_signature,
1169         .is_read_op = smb21_is_read_op,
1170         .set_oplock_level = smb21_set_oplock_level,
1171         .create_lease_buf = smb2_create_lease_buf,
1172         .parse_lease_buf = smb2_parse_lease_buf,
1173         .clone_range = smb2_clone_range,
1174 };
1175
1176 struct smb_version_operations smb30_operations = {
1177         .compare_fids = smb2_compare_fids,
1178         .setup_request = smb2_setup_request,
1179         .setup_async_request = smb2_setup_async_request,
1180         .check_receive = smb2_check_receive,
1181         .add_credits = smb2_add_credits,
1182         .set_credits = smb2_set_credits,
1183         .get_credits_field = smb2_get_credits_field,
1184         .get_credits = smb2_get_credits,
1185         .get_next_mid = smb2_get_next_mid,
1186         .read_data_offset = smb2_read_data_offset,
1187         .read_data_length = smb2_read_data_length,
1188         .map_error = map_smb2_to_linux_error,
1189         .find_mid = smb2_find_mid,
1190         .check_message = smb2_check_message,
1191         .dump_detail = smb2_dump_detail,
1192         .clear_stats = smb2_clear_stats,
1193         .print_stats = smb2_print_stats,
1194         .dump_share_caps = smb2_dump_share_caps,
1195         .is_oplock_break = smb2_is_valid_oplock_break,
1196         .need_neg = smb2_need_neg,
1197         .negotiate = smb2_negotiate,
1198         .negotiate_wsize = smb2_negotiate_wsize,
1199         .negotiate_rsize = smb2_negotiate_rsize,
1200         .sess_setup = SMB2_sess_setup,
1201         .logoff = SMB2_logoff,
1202         .tree_connect = SMB2_tcon,
1203         .tree_disconnect = SMB2_tdis,
1204         .qfs_tcon = smb3_qfs_tcon,
1205         .is_path_accessible = smb2_is_path_accessible,
1206         .can_echo = smb2_can_echo,
1207         .echo = SMB2_echo,
1208         .query_path_info = smb2_query_path_info,
1209         .get_srv_inum = smb2_get_srv_inum,
1210         .query_file_info = smb2_query_file_info,
1211         .set_path_size = smb2_set_path_size,
1212         .set_file_size = smb2_set_file_size,
1213         .set_file_info = smb2_set_file_info,
1214         .set_compression = smb2_set_compression,
1215         .mkdir = smb2_mkdir,
1216         .mkdir_setinfo = smb2_mkdir_setinfo,
1217         .rmdir = smb2_rmdir,
1218         .unlink = smb2_unlink,
1219         .rename = smb2_rename_path,
1220         .create_hardlink = smb2_create_hardlink,
1221         .query_symlink = smb2_query_symlink,
1222         .open = smb2_open_file,
1223         .set_fid = smb2_set_fid,
1224         .close = smb2_close_file,
1225         .flush = smb2_flush_file,
1226         .async_readv = smb2_async_readv,
1227         .async_writev = smb2_async_writev,
1228         .sync_read = smb2_sync_read,
1229         .sync_write = smb2_sync_write,
1230         .query_dir_first = smb2_query_dir_first,
1231         .query_dir_next = smb2_query_dir_next,
1232         .close_dir = smb2_close_dir,
1233         .calc_smb_size = smb2_calc_size,
1234         .is_status_pending = smb2_is_status_pending,
1235         .oplock_response = smb2_oplock_response,
1236         .queryfs = smb2_queryfs,
1237         .mand_lock = smb2_mand_lock,
1238         .mand_unlock_range = smb2_unlock_range,
1239         .push_mand_locks = smb2_push_mandatory_locks,
1240         .get_lease_key = smb2_get_lease_key,
1241         .set_lease_key = smb2_set_lease_key,
1242         .new_lease_key = smb2_new_lease_key,
1243         .generate_signingkey = generate_smb3signingkey,
1244         .calc_signature = smb3_calc_signature,
1245         .is_read_op = smb21_is_read_op,
1246         .set_oplock_level = smb3_set_oplock_level,
1247         .create_lease_buf = smb3_create_lease_buf,
1248         .parse_lease_buf = smb3_parse_lease_buf,
1249         .clone_range = smb2_clone_range,
1250 };
1251
1252 struct smb_version_values smb20_values = {
1253         .version_string = SMB20_VERSION_STRING,
1254         .protocol_id = SMB20_PROT_ID,
1255         .req_capabilities = 0, /* MBZ */
1256         .large_lock_type = 0,
1257         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1258         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1259         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1260         .header_size = sizeof(struct smb2_hdr),
1261         .max_header_size = MAX_SMB2_HDR_SIZE,
1262         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1263         .lock_cmd = SMB2_LOCK,
1264         .cap_unix = 0,
1265         .cap_nt_find = SMB2_NT_FIND,
1266         .cap_large_files = SMB2_LARGE_FILES,
1267         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1268         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1269         .create_lease_size = sizeof(struct create_lease),
1270 };
1271
1272 struct smb_version_values smb21_values = {
1273         .version_string = SMB21_VERSION_STRING,
1274         .protocol_id = SMB21_PROT_ID,
1275         .req_capabilities = 0, /* MBZ on negotiate req until SMB3 dialect */
1276         .large_lock_type = 0,
1277         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1278         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1279         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1280         .header_size = sizeof(struct smb2_hdr),
1281         .max_header_size = MAX_SMB2_HDR_SIZE,
1282         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1283         .lock_cmd = SMB2_LOCK,
1284         .cap_unix = 0,
1285         .cap_nt_find = SMB2_NT_FIND,
1286         .cap_large_files = SMB2_LARGE_FILES,
1287         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1288         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1289         .create_lease_size = sizeof(struct create_lease),
1290 };
1291
1292 struct smb_version_values smb30_values = {
1293         .version_string = SMB30_VERSION_STRING,
1294         .protocol_id = SMB30_PROT_ID,
1295         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1296         .large_lock_type = 0,
1297         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1298         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1299         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1300         .header_size = sizeof(struct smb2_hdr),
1301         .max_header_size = MAX_SMB2_HDR_SIZE,
1302         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1303         .lock_cmd = SMB2_LOCK,
1304         .cap_unix = 0,
1305         .cap_nt_find = SMB2_NT_FIND,
1306         .cap_large_files = SMB2_LARGE_FILES,
1307         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1308         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1309         .create_lease_size = sizeof(struct create_lease_v2),
1310 };
1311
1312 struct smb_version_values smb302_values = {
1313         .version_string = SMB302_VERSION_STRING,
1314         .protocol_id = SMB302_PROT_ID,
1315         .req_capabilities = SMB2_GLOBAL_CAP_DFS | SMB2_GLOBAL_CAP_LEASING | SMB2_GLOBAL_CAP_LARGE_MTU,
1316         .large_lock_type = 0,
1317         .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE_LOCK,
1318         .shared_lock_type = SMB2_LOCKFLAG_SHARED_LOCK,
1319         .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
1320         .header_size = sizeof(struct smb2_hdr),
1321         .max_header_size = MAX_SMB2_HDR_SIZE,
1322         .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
1323         .lock_cmd = SMB2_LOCK,
1324         .cap_unix = 0,
1325         .cap_nt_find = SMB2_NT_FIND,
1326         .cap_large_files = SMB2_LARGE_FILES,
1327         .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED,
1328         .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED,
1329         .create_lease_size = sizeof(struct create_lease_v2),
1330 };