forked from ~ljy/RK356X_SDK_RELEASE
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hc
2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87 
 kernel/fs/cifs/cifsglob.h
....@@ -33,6 +33,7 @@
3333 
3434 #define CIFS_MAGIC_NUMBER 0xFF534D42      /* the first four bytes of SMB PDUs */
3535 
36
+#define SMB_PATH_MAX 260
3637 #define CIFS_PORT 445
3738 #define RFC1001_PORT 139
3839 
....@@ -57,6 +58,12 @@
5758  * max attribute cache timeout (jiffies) - 2^30
5859  */
5960 #define CIFS_MAX_ACTIMEO (1 << 30)
61
+
62
+/*
63
+ * Max persistent and resilient handle timeout (milliseconds).
64
+ * Windows durable max was 960000 (16 minutes)
65
+ */
66
+#define SMB3_MAX_HANDLE_TIMEOUT 960000
6067 
6168 /*
6269  * MAX_REQ is the maximum number of requests that WE will send
....@@ -188,18 +195,6 @@
188195 	unsigned int	rq_tailsz;	/* length of last page */
189196 };
190197 
191
-enum smb_version {
192
-	Smb_1 = 1,
193
-	Smb_20,
194
-	Smb_21,
195
-	Smb_30,
196
-	Smb_302,
197
-	Smb_311,
198
-	Smb_3any,
199
-	Smb_default,
200
-	Smb_version_err
201
-};
202
-
203198 struct mid_q_entry;
204199 struct TCP_Server_Info;
205200 struct cifsFileInfo;
....@@ -215,6 +210,7 @@
215210 struct cifs_search_info;
216211 struct cifsInodeInfo;
217212 struct cifs_open_parms;
213
+struct cifs_credits;
218214 
219215 struct smb_version_operations {
220216 	int (*send_cancel)(struct TCP_Server_Info *, struct smb_rqst *,
....@@ -222,15 +218,17 @@
222218 	bool (*compare_fids)(struct cifsFileInfo *, struct cifsFileInfo *);
223219 	/* setup request: allocate mid, sign message */
224220 	struct mid_q_entry *(*setup_request)(struct cifs_ses *,
225
-						struct smb_rqst *);
221
+					     struct TCP_Server_Info *,
222
+					     struct smb_rqst *);
226223 	/* setup async request: allocate mid, sign message */
227224 	struct mid_q_entry *(*setup_async_request)(struct TCP_Server_Info *,
228225 						struct smb_rqst *);
229226 	/* check response: verify signature, map error */
230227 	int (*check_receive)(struct mid_q_entry *, struct TCP_Server_Info *,
231228 			     bool);
232
-	void (*add_credits)(struct TCP_Server_Info *, const unsigned int,
233
-			    const int);
229
+	void (*add_credits)(struct TCP_Server_Info *server,
230
+			    const struct cifs_credits *credits,
231
+			    const int optype);
234232 	void (*set_credits)(struct TCP_Server_Info *, const int);
235233 	int * (*get_credits_field)(struct TCP_Server_Info *, const int);
236234 	unsigned int (*get_credits)(struct mid_q_entry *);
....@@ -258,7 +256,7 @@
258256 	/* verify the message */
259257 	int (*check_message)(char *, unsigned int, struct TCP_Server_Info *);
260258 	bool (*is_oplock_break)(char *, struct TCP_Server_Info *);
261
-	int (*handle_cancelled_mid)(char *, struct TCP_Server_Info *);
259
+	int (*handle_cancelled_mid)(struct mid_q_entry *, struct TCP_Server_Info *);
262260 	void (*downgrade_oplock)(struct TCP_Server_Info *server,
263261 				 struct cifsInodeInfo *cinode, __u32 oplock,
264262 				 unsigned int epoch, bool *purge_cache);
....@@ -288,7 +286,8 @@
288286 			     const char *, struct dfs_info3_param **,
289287 			     unsigned int *, const struct nls_table *, int);
290288 	/* informational QFS call */
291
-	void (*qfs_tcon)(const unsigned int, struct cifs_tcon *);
289
+	void (*qfs_tcon)(const unsigned int, struct cifs_tcon *,
290
+			 struct cifs_sb_info *);
292291 	/* check if a path is accessible or not */
293292 	int (*is_path_accessible)(const unsigned int, struct cifs_tcon *,
294293 				  struct cifs_sb_info *, const char *);
....@@ -299,6 +298,10 @@
299298 	/* query file data from the server */
300299 	int (*query_file_info)(const unsigned int, struct cifs_tcon *,
301300 			       struct cifs_fid *, FILE_ALL_INFO *);
301
+	/* query reparse tag from srv to determine which type of special file */
302
+	int (*query_reparse_tag)(const unsigned int xid, struct cifs_tcon *tcon,
303
+				struct cifs_sb_info *cifs_sb, const char *path,
304
+				__u32 *reparse_tag);
302305 	/* get server index number */
303306 	int (*get_srv_inum)(const unsigned int, struct cifs_tcon *,
304307 			    struct cifs_sb_info *, const char *,
....@@ -323,8 +326,9 @@
323326 			umode_t mode, struct cifs_tcon *tcon,
324327 			const char *full_path,
325328 			struct cifs_sb_info *cifs_sb);
326
-	int (*mkdir)(const unsigned int, struct cifs_tcon *, const char *,
327
-		     struct cifs_sb_info *);
329
+	int (*mkdir)(const unsigned int xid, struct inode *inode, umode_t mode,
330
+		     struct cifs_tcon *tcon, const char *name,
331
+		     struct cifs_sb_info *sb);
328332 	/* set info on created directory */
329333 	void (*mkdir_setinfo)(struct inode *, const char *,
330334 			      struct cifs_sb_info *, struct cifs_tcon *,
....@@ -347,7 +351,8 @@
347351 			       struct cifs_sb_info *);
348352 	/* query symlink target */
349353 	int (*query_symlink)(const unsigned int, struct cifs_tcon *,
350
-			     const char *, char **, struct cifs_sb_info *);
354
+			     struct cifs_sb_info *, const char *,
355
+			     char **, bool);
351356 	/* open a file for non-posix mounts */
352357 	int (*open)(const unsigned int, struct cifs_open_parms *,
353358 		    __u32 *, FILE_ALL_INFO *);
....@@ -356,6 +361,9 @@
356361 	/* close a file */
357362 	void (*close)(const unsigned int, struct cifs_tcon *,
358363 		      struct cifs_fid *);
364
+	/* close a file, returning file attributes and timestamps */
365
+	void (*close_getattr)(const unsigned int xid, struct cifs_tcon *tcon,
366
+		      struct cifsFileInfo *pfile_info);
359367 	/* send a flush request to the server */
360368 	int (*flush)(const unsigned int, struct cifs_tcon *, struct cifs_fid *);
361369 	/* async read from the server */
....@@ -385,8 +393,8 @@
385393 			 struct cifs_fid *);
386394 	/* calculate a size of SMB message */
387395 	unsigned int (*calc_smb_size)(void *buf, struct TCP_Server_Info *ptcpi);
388
-	/* check for STATUS_PENDING and process it in a positive case */
389
-	bool (*is_status_pending)(char *, struct TCP_Server_Info *, int);
396
+	/* check for STATUS_PENDING and process the response if yes */
397
+	bool (*is_status_pending)(char *buf, struct TCP_Server_Info *server);
390398 	/* check for STATUS_NETWORK_SESSION_EXPIRED */
391399 	bool (*is_session_expired)(char *);
392400 	/* send oplock break response */
....@@ -394,7 +402,7 @@
394402 			       struct cifsInodeInfo *);
395403 	/* query remote filesystem */
396404 	int (*queryfs)(const unsigned int, struct cifs_tcon *,
397
-		       struct kstatfs *);
405
+		       struct cifs_sb_info *, struct kstatfs *);
398406 	/* send mandatory brlock to the server */
399407 	int (*mand_lock)(const unsigned int, struct cifsFileInfo *, __u64,
400408 			 __u64, __u32, int, int, bool);
....@@ -410,11 +418,14 @@
410418 	/* generate new lease key */
411419 	void (*new_lease_key)(struct cifs_fid *);
412420 	int (*generate_signingkey)(struct cifs_ses *);
413
-	int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *);
421
+	int (*calc_signature)(struct smb_rqst *, struct TCP_Server_Info *,
422
+				bool allocate_crypto);
414423 	int (*set_integrity)(const unsigned int, struct cifs_tcon *tcon,
415424 			     struct cifsFileInfo *src_file);
416425 	int (*enum_snapshots)(const unsigned int xid, struct cifs_tcon *tcon,
417426 			     struct cifsFileInfo *src_file, void __user *);
427
+	int (*notify)(const unsigned int xid, struct file *pfile,
428
+			     void __user *pbuf);
418429 	int (*query_mf_symlink)(unsigned int, struct cifs_tcon *,
419430 				struct cifs_sb_info *, const unsigned char *,
420431 				char *, unsigned int *);
....@@ -454,7 +465,11 @@
454465 	unsigned int (*wp_retry_size)(struct inode *);
455466 	/* get mtu credits */
456467 	int (*wait_mtu_credits)(struct TCP_Server_Info *, unsigned int,
457
-				unsigned int *, unsigned int *);
468
+				unsigned int *, struct cifs_credits *);
469
+	/* adjust previously taken mtu credits to request size */
470
+	int (*adjust_credits)(struct TCP_Server_Info *server,
471
+			      struct cifs_credits *credits,
472
+			      const unsigned int payload_size);
458473 	/* check if we need to issue closedir */
459474 	bool (*dir_needs_close)(struct cifsFileInfo *);
460475 	long (*fallocate)(struct file *, struct cifs_tcon *, int, loff_t,
....@@ -468,6 +483,27 @@
468483 	enum securityEnum (*select_sectype)(struct TCP_Server_Info *,
469484 			    enum securityEnum);
470485 	int (*next_header)(char *);
486
+	/* ioctl passthrough for query_info */
487
+	int (*ioctl_query_info)(const unsigned int xid,
488
+				struct cifs_tcon *tcon,
489
+				struct cifs_sb_info *cifs_sb,
490
+				__le16 *path, int is_dir,
491
+				unsigned long p);
492
+	/* make unix special files (block, char, fifo, socket) */
493
+	int (*make_node)(unsigned int xid,
494
+			 struct inode *inode,
495
+			 struct dentry *dentry,
496
+			 struct cifs_tcon *tcon,
497
+			 char *full_path,
498
+			 umode_t mode,
499
+			 dev_t device_number);
500
+	/* version specific fiemap implementation */
501
+	int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *,
502
+		      struct fiemap_extent_info *, u64, u64);
503
+	/* version specific llseek implementation */
504
+	loff_t (*llseek)(struct file *, struct cifs_tcon *, loff_t, int);
505
+	/* Check for STATUS_IO_TIMEOUT */
506
+	bool (*is_status_io_timeout)(char *buf);
471507 };
472508 
473509 struct smb_version_values {
....@@ -511,6 +547,7 @@
511547 	umode_t dir_mode;
512548 	enum securityEnum sectype; /* sectype requested via mnt opts */
513549 	bool sign; /* was signing requested via mnt opts? */
550
+	bool ignore_signature:1;
514551 	bool retry:1;
515552 	bool intr:1;
516553 	bool setuids:1;
....@@ -519,6 +556,8 @@
519556 	bool override_gid:1;
520557 	bool dynperm:1;
521558 	bool noperm:1;
559
+	bool nodelete:1;
560
+	bool mode_ace:1;
522561 	bool no_psx_acl:1; /* set if posix acl support should be disabled */
523562 	bool cifs_acl:1;
524563 	bool backupuid_specified; /* mount option  backupuid  is specified */
....@@ -527,6 +566,8 @@
527566 	bool server_ino:1; /* use inode numbers from server ie UniqueId */
528567 	bool direct_io:1;
529568 	bool strict_io:1; /* strict cache behavior */
569
+	bool cache_ro:1;
570
+	bool cache_rw:1;
530571 	bool remap:1;      /* set to remap seven reserved chars in filenames */
531572 	bool sfu_remap:1;  /* remap seven reserved chars ala SFU */
532573 	bool posix_paths:1; /* unset to not ask for posix pathnames. */
....@@ -555,8 +596,14 @@
555596 	bool resilient:1; /* noresilient not required since not fored for CA */
556597 	bool domainauto:1;
557598 	bool rdma:1;
599
+	bool multichannel:1;
600
+	bool use_client_guid:1;
601
+	/* reuse existing guid for multichannel */
602
+	u8 client_guid[SMB2_CLIENT_GUID_SIZE];
603
+	unsigned int bsize;
558604 	unsigned int rsize;
559605 	unsigned int wsize;
606
+	unsigned int min_offload;
560607 	bool sockopt_tcp_nodelay:1;
561608 	unsigned long actimeo; /* attribute cache timeout (jiffies) */
562609 	struct smb_version_operations *ops;
....@@ -567,9 +614,17 @@
567614 	struct nls_table *local_nls;
568615 	unsigned int echo_interval; /* echo interval in secs */
569616 	__u64 snapshot_time; /* needed for timewarp tokens */
617
+	__u32 handle_timeout; /* persistent and durable handle timeout in ms */
570618 	unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
619
+	unsigned int max_channels;
620
+	__u16 compression; /* compression algorithm 0xFFFF default 0=disabled */
621
+	bool rootfs:1; /* if it's a SMB root file system */
571622 };
572623 
624
+/**
625
+ * CIFS superblock mount flags (mnt_cifs_flags) to consider when
626
+ * trying to reuse existing superblock for a new mount
627
+ */
573628 #define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
574629 			 CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
575630 			 CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
....@@ -580,8 +635,15 @@
580635 			 CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
581636 			 CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
582637 			 CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
583
-			 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
638
+			 CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \
639
+			 CIFS_MOUNT_UID_FROM_ACL | CIFS_MOUNT_NO_HANDLE_CACHE | \
640
+			 CIFS_MOUNT_NO_DFS | CIFS_MOUNT_MODE_FROM_SID | \
641
+			 CIFS_MOUNT_RO_CACHE | CIFS_MOUNT_RW_CACHE)
584642 
643
+/**
644
+ * Generic VFS superblock mount flags (s_flags) to consider when
645
+ * trying to reuse existing superblock for a new mount
646
+ */
585647 #define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \
586648 		      SB_NODEV | SB_SYNCHRONOUS)
587649 
....@@ -628,12 +690,14 @@
628690 	unsigned int credits;  /* send no more requests at once */
629691 	unsigned int max_credits; /* can override large 32000 default at mnt */
630692 	unsigned int in_flight;  /* number of requests on the wire to server */
693
+	unsigned int max_in_flight; /* max number of requests that were on wire */
631694 	spinlock_t req_lock;  /* protect the two values above */
632695 	struct mutex srv_mutex;
633696 	struct task_struct *tsk;
634697 	char server_GUID[16];
635698 	__u16 sec_mode;
636699 	bool sign; /* is signing enabled on this connection? */
700
+	bool ignore_signature:1; /* skip validation of signatures in SMB2/3 rsp */
637701 	bool session_estab; /* mark when very first sess is established */
638702 	int echo_credits;  /* echo reserved slots */
639703 	int oplock_credits;  /* oplock break reserved slots */
....@@ -658,6 +722,7 @@
658722 	/* 16th byte of RFC1001 workstation name is always null */
659723 	char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL];
660724 	__u32 sequence_number; /* for signing, protected by srv_mutex */
725
+	__u32 reconnect_instance; /* incremented on each reconnect */
661726 	struct session_key session_key;
662727 	unsigned long lstrp; /* when we got last response from this server */
663728 	struct cifs_secmech secmech; /* crypto sec mech functs, descriptors */
....@@ -681,16 +746,22 @@
681746 	/* Total size of this PDU. Only valid from cifs_demultiplex_thread */
682747 	unsigned int pdu_size;
683748 	unsigned int total_read; /* total amount of data read in this pass */
749
+	atomic_t in_send; /* requests trying to send */
750
+	atomic_t num_waiters;   /* blocked waiting to get in sendrecv */
684751 #ifdef CONFIG_CIFS_FSCACHE
685752 	struct fscache_cookie   *fscache; /* client index cache cookie */
686753 #endif
687754 #ifdef CONFIG_CIFS_STATS2
688
-	atomic_t in_send; /* requests trying to send */
689
-	atomic_t num_waiters;   /* blocked waiting to get in sendrecv */
755
+	atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */
690756 	atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */
757
+	__u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */
758
+	__u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS];
759
+	__u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS];
691760 #endif /* STATS2 */
692761 	unsigned int	max_read;
693762 	unsigned int	max_write;
763
+	unsigned int	min_offload;
764
+	__le16	compress_algorithm;
694765 	__le16	cipher_type;
695766 	 /* save initital negprot hash */
696767 	__u8	preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
....@@ -698,6 +769,20 @@
698769 	struct delayed_work reconnect; /* reconnect workqueue job */
699770 	struct mutex reconnect_mutex; /* prevent simultaneous reconnects */
700771 	unsigned long echo_interval;
772
+
773
+	/*
774
+	 * Number of targets available for reconnect. The more targets
775
+	 * the more tasks have to wait to let the demultiplex thread
776
+	 * reconnect.
777
+	 */
778
+	int nr_targets;
779
+	bool noblockcnt; /* use non-blocking connect() */
780
+	bool is_channel; /* if a session channel */
781
+};
782
+
783
+struct cifs_credits {
784
+	unsigned int value;
785
+	unsigned int instance;
701786 };
702787 
703788 static inline unsigned int
....@@ -711,28 +796,28 @@
711796 }
712797 
713798 static inline bool
714
-has_credits(struct TCP_Server_Info *server, int *credits)
799
+has_credits(struct TCP_Server_Info *server, int *credits, int num_credits)
715800 {
716801 	int num;
717802 	spin_lock(&server->req_lock);
718803 	num = *credits;
719804 	spin_unlock(&server->req_lock);
720
-	return num > 0;
805
+	return num >= num_credits;
721806 }
722807 
723808 static inline void
724
-add_credits(struct TCP_Server_Info *server, const unsigned int add,
809
+add_credits(struct TCP_Server_Info *server, const struct cifs_credits *credits,
725810 	    const int optype)
726811 {
727
-	server->ops->add_credits(server, add, optype);
812
+	server->ops->add_credits(server, credits, optype);
728813 }
729814 
730815 static inline void
731
-add_credits_and_wake_if(struct TCP_Server_Info *server, const unsigned int add,
732
-			const int optype)
816
+add_credits_and_wake_if(struct TCP_Server_Info *server,
817
+			const struct cifs_credits *credits, const int optype)
733818 {
734
-	if (add) {
735
-		server->ops->add_credits(server, add, optype);
819
+	if (credits->value) {
820
+		server->ops->add_credits(server, credits, optype);
736821 		wake_up(&server->request_q);
737822 	}
738823 }
....@@ -741,6 +826,14 @@
741826 set_credits(struct TCP_Server_Info *server, const int val)
742827 {
743828 	server->ops->set_credits(server, val);
829
+}
830
+
831
+static inline int
832
+adjust_credits(struct TCP_Server_Info *server, struct cifs_credits *credits,
833
+	       const unsigned int payload_size)
834
+{
835
+	return server->ops->adjust_credits ?
836
+		server->ops->adjust_credits(server, credits, payload_size) : 0;
744837 }
745838 
746839 static inline __le64
....@@ -818,6 +911,7 @@
818911  * a single wsize request with a single call.
819912  */
820913 #define CIFS_DEFAULT_IOSIZE (1024 * 1024)
914
+#define SMB3_DEFAULT_IOSIZE (4 * 1024 * 1024)
821915 
822916 /*
823917  * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
....@@ -828,7 +922,7 @@
828922  *
829923  * Citation:
830924  *
831
- * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
925
+ * https://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
832926  */
833927 #define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
834928 #define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
....@@ -870,6 +964,11 @@
870964 	struct sockaddr_storage sockaddr;
871965 };
872966 
967
+struct cifs_chan {
968
+	struct TCP_Server_Info *server;
969
+	__u8 signkey[SMB3_SIGN_KEY_SIZE];
970
+};
971
+
873972 /*
874973  * Session structure.  One of these for each uid session with a particular host
875974  */
....@@ -880,7 +979,7 @@
880979 	struct mutex session_mutex;
881980 	struct TCP_Server_Info *server;	/* pointer to server info */
882981 	int ses_count;		/* reference counter */
883
-	enum statusEnum status;
982
+	enum statusEnum status;  /* updates protected by GlobalMid_Lock */
884983 	unsigned overrideSecFlg;  /* if non-zero override global sec flags */
885984 	char *serverOS;		/* name of operating system underlying server */
886985 	char *serverNOS;	/* name of network operating system of server */
....@@ -900,11 +999,14 @@
900999 	bool sign;		/* is signing required? */
9011000 	bool need_reconnect:1; /* connection reset, uid now invalid */
9021001 	bool domainAuto:1;
1002
+	bool binding:1; /* are we binding the session? */
9031003 	__u16 session_flags;
9041004 	__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
905
-	__u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
906
-	__u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
1005
+	__u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE];
1006
+	__u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
9071007 	__u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
1008
+
1009
+	__u8 binding_preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
9081010 
9091011 	/*
9101012 	 * Network interfaces available on the server this session is
....@@ -919,7 +1021,45 @@
9191021 	struct cifs_server_iface *iface_list;
9201022 	size_t iface_count;
9211023 	unsigned long iface_last_update; /* jiffies */
1024
+
1025
+#define CIFS_MAX_CHANNELS 16
1026
+	struct cifs_chan chans[CIFS_MAX_CHANNELS];
1027
+	struct cifs_chan *binding_chan;
1028
+	size_t chan_count;
1029
+	size_t chan_max;
1030
+	atomic_t chan_seq; /* round robin state */
9221031 };
1032
+
1033
+/*
1034
+ * When binding a new channel, we need to access the channel which isn't fully
1035
+ * established yet.
1036
+ */
1037
+
1038
+static inline
1039
+struct cifs_chan *cifs_ses_binding_channel(struct cifs_ses *ses)
1040
+{
1041
+	if (ses->binding)
1042
+		return ses->binding_chan;
1043
+	else
1044
+		return NULL;
1045
+}
1046
+
1047
+/*
1048
+ * Returns the server pointer of the session. When binding a new
1049
+ * channel this returns the last channel which isn't fully established
1050
+ * yet.
1051
+ *
1052
+ * This function should be use for negprot/sess.setup codepaths. For
1053
+ * the other requests see cifs_pick_channel().
1054
+ */
1055
+static inline
1056
+struct TCP_Server_Info *cifs_ses_server(struct cifs_ses *ses)
1057
+{
1058
+	if (ses->binding)
1059
+		return ses->binding_chan->server;
1060
+	else
1061
+		return ses->server;
1062
+}
9231063 
9241064 static inline bool
9251065 cap_unix(struct cifs_ses *ses)
....@@ -929,11 +1069,14 @@
9291069 
9301070 struct cached_fid {
9311071 	bool is_valid:1;	/* Do we have a useable root fid */
1072
+	bool file_all_info_is_valid:1;
1073
+	bool has_lease:1;
9321074 	struct kref refcount;
9331075 	struct cifs_fid *fid;
9341076 	struct mutex fid_mutex;
9351077 	struct cifs_tcon *tcon;
9361078 	struct work_struct lease_break;
1079
+	struct smb2_file_all_info file_all_info;
9371080 };
9381081 
9391082 /*
....@@ -944,6 +1087,8 @@
9441087 	struct list_head tcon_list;
9451088 	int tc_count;
9461089 	struct list_head rlist; /* reconnect list */
1090
+	atomic_t num_local_opens;  /* num of all opens including disconnected */
1091
+	atomic_t num_remote_opens; /* num of all network opens on server */
9471092 	struct list_head openFileList;
9481093 	spinlock_t open_file_lock; /* protects list above */
9491094 	struct cifs_ses *ses;	/* pointer to session associated with */
....@@ -995,6 +1140,7 @@
9951140 	bool retry:1;
9961141 	bool nocase:1;
9971142 	bool nohandlecache:1; /* if strange server resource prob can turn off */
1143
+	bool nodelete:1;
9981144 	bool seal:1;      /* transport encryption for this mounted share */
9991145 	bool unix_ext:1;  /* if false disable Linux extensions to CIFS protocol
10001146 				for this mount even if server would support */
....@@ -1013,6 +1159,7 @@
10131159 	__u32 vol_serial_number;
10141160 	__le64 vol_create_time;
10151161 	__u64 snapshot_time; /* for timewarp tokens - timestamp of snapshot */
1162
+	__u32 handle_timeout; /* persistent and durable handle timeout in ms */
10161163 	__u32 ss_flags;		/* sector size flags */
10171164 	__u32 perf_sector_size; /* best sector size for perf */
10181165 	__u32 max_chunks;
....@@ -1025,6 +1172,11 @@
10251172 	struct list_head pending_opens;	/* list of incomplete opens */
10261173 	struct cached_fid crfid; /* Cached root fid */
10271174 	/* BB add field for back pointer to sb struct(s)? */
1175
+#ifdef CONFIG_CIFS_DFS_UPCALL
1176
+	char *dfs_path;
1177
+	int remap:2;
1178
+	struct list_head ulist; /* cache update list */
1179
+#endif
10281180 };
10291181 
10301182 /*
....@@ -1093,7 +1245,8 @@
10931245 	__u64 offset;
10941246 	__u64 length;
10951247 	__u32 pid;
1096
-	__u32 type;
1248
+	__u16 type;
1249
+	__u16 flags;
10971250 };
10981251 
10991252 /*
....@@ -1115,6 +1268,7 @@
11151268 	bool smallBuf:1; /* so we know which buf_release function to call */
11161269 };
11171270 
1271
+#define ACL_NO_MODE	((umode_t)(-1))
11181272 struct cifs_open_parms {
11191273 	struct cifs_tcon *tcon;
11201274 	struct cifs_sb_info *cifs_sb;
....@@ -1133,8 +1287,12 @@
11331287 	__u64 volatile_fid;	/* volatile file id for smb2 */
11341288 	__u8 lease_key[SMB2_LEASE_KEY_SIZE];	/* lease key for smb2 */
11351289 	__u8 create_guid[16];
1290
+	__u32 access;
11361291 	struct cifs_pending_open *pending_open;
11371292 	unsigned int epoch;
1293
+#ifdef CONFIG_CIFS_DEBUG2
1294
+	__u64 mid;
1295
+#endif /* CIFS_DEBUG2 */
11381296 	bool purge_cache;
11391297 };
11401298 
....@@ -1160,6 +1318,7 @@
11601318 	struct tcon_link *tlink;
11611319 	unsigned int f_flags;
11621320 	bool invalidHandle:1;	/* file closed via session abend */
1321
+	bool swapfile:1;
11631322 	bool oplock_break_cancelled:1;
11641323 	unsigned int oplock_epoch; /* epoch from the lease break */
11651324 	__u32 oplock_level; /* oplock/lease level from the lease break */
....@@ -1168,6 +1327,7 @@
11681327 	struct mutex fh_mutex; /* prevents reopen race after dead ses*/
11691328 	struct cifs_search_info srch_inf;
11701329 	struct work_struct oplock_break; /* work for oplock breaks */
1330
+	struct work_struct put; /* work for the final part of _put */
11711331 };
11721332 
11731333 struct cifs_io_parms {
....@@ -1178,6 +1338,7 @@
11781338 	__u64 offset;
11791339 	unsigned int length;
11801340 	struct cifs_tcon *tcon;
1341
+	struct TCP_Server_Info *server;
11811342 };
11821343 
11831344 struct cifs_aio_ctx {
....@@ -1195,6 +1356,11 @@
11951356 	unsigned int		len;
11961357 	unsigned int		total_len;
11971358 	bool			should_dirty;
1359
+	/*
1360
+	 * Indicates if this aio_ctx is for direct_io,
1361
+	 * If yes, iter is a copy of the user passed iov_iter
1362
+	 */
1363
+	bool			direct_io;
11981364 };
11991365 
12001366 struct cifs_readdata;
....@@ -1220,13 +1386,14 @@
12201386 				struct cifs_readdata *rdata,
12211387 				struct iov_iter *iter);
12221388 	struct kvec			iov[2];
1389
+	struct TCP_Server_Info		*server;
12231390 #ifdef CONFIG_CIFS_SMB_DIRECT
12241391 	struct smbd_mr			*mr;
12251392 #endif
12261393 	unsigned int			pagesz;
12271394 	unsigned int			page_offset;
12281395 	unsigned int			tailsz;
1229
-	unsigned int			credits;
1396
+	struct cifs_credits		credits;
12301397 	unsigned int			nr_pages;
12311398 	struct page			**pages;
12321399 };
....@@ -1246,13 +1413,14 @@
12461413 	pid_t				pid;
12471414 	unsigned int			bytes;
12481415 	int				result;
1416
+	struct TCP_Server_Info		*server;
12491417 #ifdef CONFIG_CIFS_SMB_DIRECT
12501418 	struct smbd_mr			*mr;
12511419 #endif
12521420 	unsigned int			pagesz;
12531421 	unsigned int			page_offset;
12541422 	unsigned int			tailsz;
1255
-	unsigned int			credits;
1423
+	struct cifs_credits		credits;
12561424 	unsigned int			nr_pages;
12571425 	struct page			**pages;
12581426 };
....@@ -1268,7 +1436,8 @@
12681436 }
12691437 
12701438 struct cifsFileInfo *cifsFileInfo_get(struct cifsFileInfo *cifs_file);
1271
-void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr);
1439
+void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_hdlr,
1440
+		       bool offload);
12721441 void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
12731442 
12741443 #define CIFS_CACHE_READ_FLG	1
....@@ -1278,9 +1447,9 @@
12781447 #define CIFS_CACHE_RW_FLG	(CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG)
12791448 #define CIFS_CACHE_RHW_FLG	(CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG)
12801449 
1281
-#define CIFS_CACHE_READ(cinode) (cinode->oplock & CIFS_CACHE_READ_FLG)
1450
+#define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE))
12821451 #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG)
1283
-#define CIFS_CACHE_WRITE(cinode) (cinode->oplock & CIFS_CACHE_WRITE_FLG)
1452
+#define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE))
12841453 
12851454 /*
12861455  * One of these for each file inode
....@@ -1291,7 +1460,7 @@
12911460 	struct list_head llist;	/* locks helb by this inode */
12921461 	/*
12931462 	 * NOTE: Some code paths call down_read(lock_sem) twice, so
1294
-	 * we must always use use cifs_down_write() instead of down_write()
1463
+	 * we must always use cifs_down_write() instead of down_write()
12951464 	 * for this semaphore to avoid deadlocks.
12961465 	 */
12971466 	struct rw_semaphore lock_sem;	/* protect the fields above */
....@@ -1422,6 +1591,7 @@
14221591 	struct TCP_Server_Info *server;	/* server corresponding to this mid */
14231592 	__u64 mid;		/* multiplex id */
14241593 	__u16 credits;		/* number of credits consumed by this mid */
1594
+	__u16 credits_received;	/* number of credits from the response */
14251595 	__u32 pid;		/* process id */
14261596 	__u32 sequence_number;  /* for CIFS signing */
14271597 	unsigned long when_alloc;  /* when mid was created */
....@@ -1433,11 +1603,13 @@
14331603 	mid_callback_t *callback; /* call completion callback */
14341604 	mid_handle_t *handle; /* call handle mid callback */
14351605 	void *callback_data;	  /* general purpose pointer for callback */
1606
+	struct task_struct *creator;
14361607 	void *resp_buf;		/* pointer to received SMB header */
14371608 	unsigned int resp_buf_size;
14381609 	int mid_state;	/* wish this were enum but can not pass to wait_event */
14391610 	unsigned int mid_flags;
14401611 	__le16 command;		/* smb command code */
1612
+	unsigned int optype;	/* operation type */
14411613 	bool large_buf:1;	/* if valid response, is pointer to large buf */
14421614 	bool multiRsp:1;	/* multiple trans2 responses for one request  */
14431615 	bool multiEnd:1;	/* both received */
....@@ -1448,12 +1620,12 @@
14481620 	struct cifs_fid         fid;
14491621 	struct cifs_tcon        *tcon;
14501622 	struct work_struct      work;
1623
+	__u64 mid;
1624
+	__u16 cmd;
14511625 };
14521626 
14531627 /*	Make code in transport.c a little cleaner by moving
14541628 	update of optional stats into function below */
1455
-#ifdef CONFIG_CIFS_STATS2
1456
-
14571629 static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
14581630 {
14591631 	atomic_inc(&server->in_send);
....@@ -1474,26 +1646,12 @@
14741646 	atomic_dec(&server->num_waiters);
14751647 }
14761648 
1649
+#ifdef CONFIG_CIFS_STATS2
14771650 static inline void cifs_save_when_sent(struct mid_q_entry *mid)
14781651 {
14791652 	mid->when_sent = jiffies;
14801653 }
14811654 #else
1482
-static inline void cifs_in_send_inc(struct TCP_Server_Info *server)
1483
-{
1484
-}
1485
-static inline void cifs_in_send_dec(struct TCP_Server_Info *server)
1486
-{
1487
-}
1488
-
1489
-static inline void cifs_num_waiters_inc(struct TCP_Server_Info *server)
1490
-{
1491
-}
1492
-
1493
-static inline void cifs_num_waiters_dec(struct TCP_Server_Info *server)
1494
-{
1495
-}
1496
-
14971655 static inline void cifs_save_when_sent(struct mid_q_entry *mid)
14981656 {
14991657 }
....@@ -1520,6 +1678,7 @@
15201678 	int ref_flag;
15211679 	char *path_name;
15221680 	char *node_name;
1681
+	int ttl;
15231682 };
15241683 
15251684 /*
....@@ -1550,6 +1709,7 @@
15501709 	struct timespec64 cf_atime;
15511710 	struct timespec64 cf_mtime;
15521711 	struct timespec64 cf_ctime;
1712
+	u32             cf_cifstag;
15531713 };
15541714 
15551715 static inline void free_dfs_info_param(struct dfs_info3_param *param)
....@@ -1557,7 +1717,6 @@
15571717 	if (param) {
15581718 		kfree(param->path_name);
15591719 		kfree(param->node_name);
1560
-		kfree(param);
15611720 	}
15621721 }
15631722 
....@@ -1593,6 +1752,12 @@
15931752 	return false;
15941753 }
15951754 
1755
+
1756
+/* cifs_get_writable_file() flags */
1757
+#define FIND_WR_ANY         0
1758
+#define FIND_WR_FSUID_ONLY  1
1759
+#define FIND_WR_WITH_DELETE 2
1760
+
15961761 #define   MID_FREE 0
15971762 #define   MID_REQUEST_ALLOCATED 1
15981763 #define   MID_REQUEST_SUBMITTED 2
....@@ -1613,20 +1778,22 @@
16131778 
16141779 /* Type of Request to SendReceive2 */
16151780 #define   CIFS_BLOCKING_OP      1    /* operation can block */
1616
-#define   CIFS_ASYNC_OP         2    /* do not wait for response */
1781
+#define   CIFS_NON_BLOCKING     2    /* do not block waiting for credits */
16171782 #define   CIFS_TIMEOUT_MASK 0x003    /* only one of above set in req */
16181783 #define   CIFS_LOG_ERROR    0x010    /* log NT STATUS if non-zero */
16191784 #define   CIFS_LARGE_BUF_OP 0x020    /* large request buffer */
1620
-#define   CIFS_NO_RESP      0x040    /* no response buffer required */
1785
+#define   CIFS_NO_RSP_BUF   0x040    /* no response buffer required */
16211786 
16221787 /* Type of request operation */
1623
-#define   CIFS_ECHO_OP      0x080    /* echo request */
1624
-#define   CIFS_OBREAK_OP   0x0100    /* oplock break request */
1625
-#define   CIFS_NEG_OP      0x0200    /* negotiate request */
1626
-#define   CIFS_OP_MASK     0x0380    /* mask request type */
1788
+#define   CIFS_ECHO_OP            0x080  /* echo request */
1789
+#define   CIFS_OBREAK_OP          0x0100 /* oplock break request */
1790
+#define   CIFS_NEG_OP             0x0200 /* negotiate request */
1791
+#define   CIFS_CP_CREATE_CLOSE_OP 0x0400 /* compound create+close request */
1792
+#define   CIFS_OP_MASK            0x0780 /* mask request type */
16271793 
16281794 #define   CIFS_HAS_CREDITS 0x0400    /* already has credits */
16291795 #define   CIFS_TRANSFORM_REQ 0x0800    /* transform request before sending */
1796
+#define   CIFS_NO_SRV_RSP    0x1000    /* there is no server response */
16301797 
16311798 /* Security Flags: indicate type of session setup needed */
16321799 #define   CIFSSEC_MAY_SIGN	0x00001
....@@ -1695,6 +1862,8 @@
16951862  *  GlobalMid_Lock protects:
16961863  *	list operations on pending_mid_q and oplockQ
16971864  *      updates to XID counters, multiplex id  and SMB sequence numbers
1865
+ *      list operations on global DnotifyReqList
1866
+ *      updates to ses->status
16981867  *  tcp_ses_lock protects:
16991868  *	list operations on tcp and SMB session lists
17001869  *  tcon->open_file_lock protects the list of open files hanging off the tcon
....@@ -1732,7 +1901,8 @@
17321901 /*
17331902  * This lock protects the cifs_tcp_ses_list, the list of smb sessions per
17341903  * tcp session, and the list of tcon's per smb session. It also protects
1735
- * the reference counters for the server, smb session, and tcon. Finally,
1904
+ * the reference counters for the server, smb session, and tcon. It also
1905
+ * protects some fields in the TCP_Server_Info struct such as dstaddr. Finally,
17361906  * changes to the tcon->tidStatus should be done while holding this lock.
17371907  * generally the locks should be taken in order tcp_ses_lock before
17381908  * tcon->open_file_lock and that before file->file_info_lock since the
....@@ -1769,6 +1939,7 @@
17691939 #ifdef CONFIG_CIFS_STATS2
17701940 GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
17711941 GLOBAL_EXTERN atomic_t totSmBufAllocCount;
1942
+extern unsigned int slow_rsp_threshold; /* number of secs before logging */
17721943 #endif
17731944 GLOBAL_EXTERN atomic_t smBufAllocCount;
17741945 GLOBAL_EXTERN atomic_t midCount;
....@@ -1779,6 +1950,8 @@
17791950 extern unsigned int global_secflags;	/* if on, session setup sent
17801951 				with more secure ntlmssp2 challenge/resp */
17811952 extern unsigned int sign_CIFS_PDUs;  /* enable smb packet signing */
1953
+extern bool enable_gcm_256; /* allow optional negotiate of strongest signing (aes-gcm-256) */
1954
+extern bool require_gcm_256; /* require use of strongest signing (aes-gcm-256) */
17821955 extern bool linuxExtEnabled;/*enable Linux/Unix CIFS extensions*/
17831956 extern unsigned int CIFSMaxBufSize;  /* max size not including hdr */
17841957 extern unsigned int cifs_min_rcv;    /* min size of big ntwrk buf pool */
....@@ -1786,7 +1959,6 @@
17861959 extern unsigned int cifs_max_pending; /* MAX requests at once to server*/
17871960 extern bool disable_legacy_dialects;  /* forbid vers=1.0 and vers=2.0 mounts */
17881961 
1789
-#ifdef CONFIG_CIFS_ACL
17901962 GLOBAL_EXTERN struct rb_root uidtree;
17911963 GLOBAL_EXTERN struct rb_root gidtree;
17921964 GLOBAL_EXTERN spinlock_t siduidlock;
....@@ -1795,13 +1967,14 @@
17951967 GLOBAL_EXTERN struct rb_root sidgidtree;
17961968 GLOBAL_EXTERN spinlock_t uidsidlock;
17971969 GLOBAL_EXTERN spinlock_t gidsidlock;
1798
-#endif /* CONFIG_CIFS_ACL */
17991970 
18001971 void cifs_oplock_break(struct work_struct *work);
18011972 void cifs_queue_oplock_break(struct cifsFileInfo *cfile);
18021973 
18031974 extern const struct slow_work_ops cifs_oplock_break_ops;
18041975 extern struct workqueue_struct *cifsiod_wq;
1976
+extern struct workqueue_struct *decrypt_wq;
1977
+extern struct workqueue_struct *fileinfo_put_wq;
18051978 extern struct workqueue_struct *cifsoplockd_wq;
18061979 extern __u32 cifs_lock_secret;
18071980 
....@@ -1809,11 +1982,13 @@
18091982 
18101983 /* Operations for different SMB versions */
18111984 #define SMB1_VERSION_STRING	"1.0"
1985
+#define SMB20_VERSION_STRING    "2.0"
1986
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
18121987 extern struct smb_version_operations smb1_operations;
18131988 extern struct smb_version_values smb1_values;
1814
-#define SMB20_VERSION_STRING	"2.0"
18151989 extern struct smb_version_operations smb20_operations;
18161990 extern struct smb_version_values smb20_values;
1991
+#endif /* CIFS_ALLOW_INSECURE_LEGACY */
18171992 #define SMB21_VERSION_STRING	"2.1"
18181993 extern struct smb_version_operations smb21_operations;
18191994 extern struct smb_version_values smb21_values;
....@@ -1825,10 +2000,50 @@
18252000 extern struct smb_version_operations smb30_operations;
18262001 extern struct smb_version_values smb30_values;
18272002 #define SMB302_VERSION_STRING	"3.02"
2003
+#define ALT_SMB302_VERSION_STRING "3.0.2"
18282004 /*extern struct smb_version_operations smb302_operations;*/ /* not needed yet */
18292005 extern struct smb_version_values smb302_values;
18302006 #define SMB311_VERSION_STRING	"3.1.1"
18312007 #define ALT_SMB311_VERSION_STRING "3.11"
18322008 extern struct smb_version_operations smb311_operations;
18332009 extern struct smb_version_values smb311_values;
2010
+
2011
+static inline char *get_security_type_str(enum securityEnum sectype)
2012
+{
2013
+	switch (sectype) {
2014
+	case RawNTLMSSP:
2015
+		return "RawNTLMSSP";
2016
+	case Kerberos:
2017
+		return "Kerberos";
2018
+	case NTLMv2:
2019
+		return "NTLMv2";
2020
+	case NTLM:
2021
+		return "NTLM";
2022
+	case LANMAN:
2023
+		return "LANMAN";
2024
+	default:
2025
+		return "Unknown";
2026
+	}
2027
+}
2028
+
2029
+static inline bool is_smb1_server(struct TCP_Server_Info *server)
2030
+{
2031
+	return strcmp(server->vals->version_string, SMB1_VERSION_STRING) == 0;
2032
+}
2033
+
2034
+static inline bool is_tcon_dfs(struct cifs_tcon *tcon)
2035
+{
2036
+	/*
2037
+	 * For SMB1, see MS-CIFS 2.4.55 SMB_COM_TREE_CONNECT_ANDX (0x75) and MS-CIFS 3.3.4.4 DFS
2038
+	 * Subsystem Notifies That a Share Is a DFS Share.
2039
+	 *
2040
+	 * For SMB2+, see MS-SMB2 2.2.10 SMB2 TREE_CONNECT Response and MS-SMB2 3.3.4.14 Server
2041
+	 * Application Updates a Share.
2042
+	 */
2043
+	if (!tcon || !tcon->ses || !tcon->ses->server)
2044
+		return false;
2045
+	return is_smb1_server(tcon->ses->server) ? tcon->Flags & SMB_SHARE_IS_IN_DFS :
2046
+		tcon->share_flags & (SHI1005_FLAGS_DFS | SHI1005_FLAGS_DFS_ROOT);
2047
+}
2048
+
18342049 #endif	/* _CIFS_GLOB_H */