[mirror_ubuntu-bionic-kernel.git] / fs / cifs / smb2ops.c

/*
 *  SMB2 version specific operations
 *
 *  Copyright (c) 2012, Jeff Layton <jlayton@redhat.com>
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License v2 as published
 *  by the Free Software Foundation.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *  the GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include "cifsglob.h"
#include "smb2pdu.h"
#include "smb2proto.h"
#include "cifsproto.h"
#include "cifs_debug.h"

static int
change_conf(struct TCP_Server_Info *server)
{
	server->credits += server->echo_credits + server->oplock_credits;
	server->oplock_credits = server->echo_credits = 0;
	switch (server->credits) {
	case 0:
		return -1;
	case 1:
		server->echoes = false;
		server->oplocks = false;
		cERROR(1, "disabling echoes and oplocks");
		break;
	case 2:
		server->echoes = true;
		server->oplocks = false;
		server->echo_credits = 1;
		cFYI(1, "disabling oplocks");
		break;
	default:
		server->echoes = true;
		server->oplocks = true;
		server->echo_credits = 1;
		server->oplock_credits = 1;
	}
	server->credits -= server->echo_credits + server->oplock_credits;
	return 0;
}

static void
smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
		 const int optype)
{
	int *val, rc = 0;
	spin_lock(&server->req_lock);
	val = server->ops->get_credits_field(server, optype);
	*val += add;
	server->in_flight--;
	if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
		rc = change_conf(server);
	spin_unlock(&server->req_lock);
	wake_up(&server->request_q);
	if (rc)
		cifs_reconnect(server);
}

static void
smb2_set_credits(struct TCP_Server_Info *server, const int val)
{
	spin_lock(&server->req_lock);
	server->credits = val;
	spin_unlock(&server->req_lock);
}

static int *
smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
{
	switch (optype) {
	case CIFS_ECHO_OP:
		return &server->echo_credits;
	case CIFS_OBREAK_OP:
		return &server->oplock_credits;
	default:
		return &server->credits;
	}
}

static unsigned int
smb2_get_credits(struct mid_q_entry *mid)
{
	return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
}

static __u64
smb2_get_next_mid(struct TCP_Server_Info *server)
{
	__u64 mid;
	/* for SMB2 we need the current value */
	spin_lock(&GlobalMid_Lock);
	mid = server->CurrentMid++;
	spin_unlock(&GlobalMid_Lock);
	return mid;
}

static struct mid_q_entry *
smb2_find_mid(struct TCP_Server_Info *server, char *buf)
{
	struct mid_q_entry *mid;
	struct smb2_hdr *hdr = (struct smb2_hdr *)buf;

	spin_lock(&GlobalMid_Lock);
	list_for_each_entry(mid, &server->pending_mid_q, qhead) {
		if ((mid->mid == hdr->MessageId) &&
		    (mid->mid_state == MID_REQUEST_SUBMITTED) &&
		    (mid->command == hdr->Command)) {
			spin_unlock(&GlobalMid_Lock);
			return mid;
		}
	}
	spin_unlock(&GlobalMid_Lock);
	return NULL;
}

static void
smb2_dump_detail(void *buf)
{
#ifdef CONFIG_CIFS_DEBUG2
	struct smb2_hdr *smb = (struct smb2_hdr *)buf;

	cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d",
		  smb->Command, smb->Status, smb->Flags, smb->MessageId,
		  smb->ProcessId);
	cERROR(1, "smb buf %p len %u", smb, smb2_calc_size(smb));
#endif
}

static bool
smb2_need_neg(struct TCP_Server_Info *server)
{
	return server->max_read == 0;
}

static int
smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
{
	int rc;
	ses->server->CurrentMid = 0;
	rc = SMB2_negotiate(xid, ses);
	/* BB we probably don't need to retry with modern servers */
	if (rc == -EAGAIN)
		rc = -EHOSTDOWN;
	return rc;
}

static int
smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
			struct cifs_sb_info *cifs_sb, const char *full_path)
{
	int rc;
	__u64 persistent_fid, volatile_fid;
	__le16 *utf16_path;

	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	if (!utf16_path)
		return -ENOMEM;

	rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
		       FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, NULL);
	if (rc) {
		kfree(utf16_path);
		return rc;
	}

	rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
	kfree(utf16_path);
	return rc;
}

static int
smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
		  struct cifs_sb_info *cifs_sb, const char *full_path,
		  u64 *uniqueid, FILE_ALL_INFO *data)
{
	*uniqueid = le64_to_cpu(data->IndexNumber);
	return 0;
}

static int
smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
		     struct cifs_fid *fid, FILE_ALL_INFO *data)
{
	int rc;
	struct smb2_file_all_info *smb2_data;

	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
			    GFP_KERNEL);
	if (smb2_data == NULL)
		return -ENOMEM;

	rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
			     smb2_data);
	if (!rc)
		move_smb2_info_to_cifs(data, smb2_data);
	kfree(smb2_data);
	return rc;
}

static char *
smb2_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
			struct cifs_tcon *tcon)
{
	int pplen = vol->prepath ? strlen(vol->prepath) : 0;
	char *full_path = NULL;

	/* if no prefix path, simply set path to the root of share to "" */
	if (pplen == 0) {
		full_path = kzalloc(2, GFP_KERNEL);
		return full_path;
	}

	cERROR(1, "prefixpath is not supported for SMB2 now");
	return NULL;
}

static bool
smb2_can_echo(struct TCP_Server_Info *server)
{
	return server->echoes;
}

static void
smb2_clear_stats(struct cifs_tcon *tcon)
{
#ifdef CONFIG_CIFS_STATS
	int i;
	for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
		atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
		atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
	}
#endif
}

static void
smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
{
#ifdef CONFIG_CIFS_STATS
	atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
	atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
	seq_printf(m, "\nNegotiates: %d sent %d failed",
		   atomic_read(&sent[SMB2_NEGOTIATE_HE]),
		   atomic_read(&failed[SMB2_NEGOTIATE_HE]));
	seq_printf(m, "\nSessionSetups: %d sent %d failed",
		   atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
		   atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
#define SMB2LOGOFF		0x0002 /* trivial request/resp */
	seq_printf(m, "\nLogoffs: %d sent %d failed",
		   atomic_read(&sent[SMB2_LOGOFF_HE]),
		   atomic_read(&failed[SMB2_LOGOFF_HE]));
	seq_printf(m, "\nTreeConnects: %d sent %d failed",
		   atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
		   atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
	seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
		   atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
		   atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
	seq_printf(m, "\nCreates: %d sent %d failed",
		   atomic_read(&sent[SMB2_CREATE_HE]),
		   atomic_read(&failed[SMB2_CREATE_HE]));
	seq_printf(m, "\nCloses: %d sent %d failed",
		   atomic_read(&sent[SMB2_CLOSE_HE]),
		   atomic_read(&failed[SMB2_CLOSE_HE]));
	seq_printf(m, "\nFlushes: %d sent %d failed",
		   atomic_read(&sent[SMB2_FLUSH_HE]),
		   atomic_read(&failed[SMB2_FLUSH_HE]));
	seq_printf(m, "\nReads: %d sent %d failed",
		   atomic_read(&sent[SMB2_READ_HE]),
		   atomic_read(&failed[SMB2_READ_HE]));
	seq_printf(m, "\nWrites: %d sent %d failed",
		   atomic_read(&sent[SMB2_WRITE_HE]),
		   atomic_read(&failed[SMB2_WRITE_HE]));
	seq_printf(m, "\nLocks: %d sent %d failed",
		   atomic_read(&sent[SMB2_LOCK_HE]),
		   atomic_read(&failed[SMB2_LOCK_HE]));
	seq_printf(m, "\nIOCTLs: %d sent %d failed",
		   atomic_read(&sent[SMB2_IOCTL_HE]),
		   atomic_read(&failed[SMB2_IOCTL_HE]));
	seq_printf(m, "\nCancels: %d sent %d failed",
		   atomic_read(&sent[SMB2_CANCEL_HE]),
		   atomic_read(&failed[SMB2_CANCEL_HE]));
	seq_printf(m, "\nEchos: %d sent %d failed",
		   atomic_read(&sent[SMB2_ECHO_HE]),
		   atomic_read(&failed[SMB2_ECHO_HE]));
	seq_printf(m, "\nQueryDirectories: %d sent %d failed",
		   atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
		   atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
	seq_printf(m, "\nChangeNotifies: %d sent %d failed",
		   atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
		   atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
	seq_printf(m, "\nQueryInfos: %d sent %d failed",
		   atomic_read(&sent[SMB2_QUERY_INFO_HE]),
		   atomic_read(&failed[SMB2_QUERY_INFO_HE]));
	seq_printf(m, "\nSetInfos: %d sent %d failed",
		   atomic_read(&sent[SMB2_SET_INFO_HE]),
		   atomic_read(&failed[SMB2_SET_INFO_HE]));
	seq_printf(m, "\nOplockBreaks: %d sent %d failed",
		   atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
		   atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
#endif
}

static void
smb2_set_fid(struct cifsFileInfo *cfile, struct cifs_fid *fid, __u32 oplock)
{
	/* struct cifsInodeInfo *cinode = CIFS_I(cfile->dentry->d_inode); */
	cfile->fid.persistent_fid = fid->persistent_fid;
	cfile->fid.volatile_fid = fid->volatile_fid;
	/* cifs_set_oplock_level(cinode, oplock); */
	/* cinode->can_cache_brlcks = cinode->clientCanCacheAll; */
}

static int
smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
		struct cifs_fid *fid)
{
	return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}

struct smb_version_operations smb21_operations = {
	.setup_request = smb2_setup_request,
	.setup_async_request = smb2_setup_async_request,
	.check_receive = smb2_check_receive,
	.add_credits = smb2_add_credits,
	.set_credits = smb2_set_credits,
	.get_credits_field = smb2_get_credits_field,
	.get_credits = smb2_get_credits,
	.get_next_mid = smb2_get_next_mid,
	.find_mid = smb2_find_mid,
	.check_message = smb2_check_message,
	.dump_detail = smb2_dump_detail,
	.clear_stats = smb2_clear_stats,
	.print_stats = smb2_print_stats,
	.need_neg = smb2_need_neg,
	.negotiate = smb2_negotiate,
	.sess_setup = SMB2_sess_setup,
	.logoff = SMB2_logoff,
	.tree_connect = SMB2_tcon,
	.tree_disconnect = SMB2_tdis,
	.is_path_accessible = smb2_is_path_accessible,
	.can_echo = smb2_can_echo,
	.echo = SMB2_echo,
	.query_path_info = smb2_query_path_info,
	.get_srv_inum = smb2_get_srv_inum,
	.query_file_info = smb2_query_file_info,
	.build_path_to_root = smb2_build_path_to_root,
	.mkdir = smb2_mkdir,
	.mkdir_setinfo = smb2_mkdir_setinfo,
	.rmdir = smb2_rmdir,
	.unlink = smb2_unlink,
	.open = smb2_open_file,
	.set_fid = smb2_set_fid,
	.close = smb2_close_file,
};

struct smb_version_values smb21_values = {
	.version_string = SMB21_VERSION_STRING,
	.header_size = sizeof(struct smb2_hdr),
	.max_header_size = MAX_SMB2_HDR_SIZE,
	.lock_cmd = SMB2_LOCK,
	.cap_unix = 0,
	.cap_nt_find = SMB2_NT_FIND,
	.cap_large_files = SMB2_LARGE_FILES,
};
Commit	Line	Data
1080ef75 SF	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 "cifsglob.h"
2dc7e1c0 PS	21	#include "smb2pdu.h"
2dc7e1c0 PS	22	#include "smb2proto.h"
28ea5290 PS	23	#include "cifsproto.h"
	24	#include "cifs_debug.h"
	25
	26	static int
	27	change_conf(struct TCP_Server_Info *server)
	28	{
	29	server->credits += server->echo_credits + server->oplock_credits;
	30	server->oplock_credits = server->echo_credits = 0;
	31	switch (server->credits) {
	32	case 0:
	33	return -1;
	34	case 1:
	35	server->echoes = false;
	36	server->oplocks = false;
	37	cERROR(1, "disabling echoes and oplocks");
	38	break;
	39	case 2:
	40	server->echoes = true;
	41	server->oplocks = false;
	42	server->echo_credits = 1;
	43	cFYI(1, "disabling oplocks");
	44	break;
	45	default:
	46	server->echoes = true;
	47	server->oplocks = true;
	48	server->echo_credits = 1;
	49	server->oplock_credits = 1;
	50	}
	51	server->credits -= server->echo_credits + server->oplock_credits;
	52	return 0;
	53	}
	54
	55	static void
	56	smb2_add_credits(struct TCP_Server_Info *server, const unsigned int add,
	57	const int optype)
	58	{
	59	int *val, rc = 0;
	60	spin_lock(&server->req_lock);
	61	val = server->ops->get_credits_field(server, optype);
	62	*val += add;
	63	server->in_flight--;
ec2e4523	64	if (server->in_flight == 0 && (optype & CIFS_OP_MASK) != CIFS_NEG_OP)
28ea5290 PS	65	rc = change_conf(server);
	66	spin_unlock(&server->req_lock);
	67	wake_up(&server->request_q);
	68	if (rc)
	69	cifs_reconnect(server);
	70	}
	71
	72	static void
	73	smb2_set_credits(struct TCP_Server_Info *server, const int val)
	74	{
	75	spin_lock(&server->req_lock);
	76	server->credits = val;
	77	spin_unlock(&server->req_lock);
	78	}
	79
	80	static int *
	81	smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
	82	{
	83	switch (optype) {
	84	case CIFS_ECHO_OP:
	85	return &server->echo_credits;
	86	case CIFS_OBREAK_OP:
	87	return &server->oplock_credits;
	88	default:
	89	return &server->credits;
	90	}
	91	}
	92
	93	static unsigned int
	94	smb2_get_credits(struct mid_q_entry *mid)
	95	{
	96	return le16_to_cpu(((struct smb2_hdr *)mid->resp_buf)->CreditRequest);
	97	}
2dc7e1c0 PS	98
	99	static __u64
	100	smb2_get_next_mid(struct TCP_Server_Info *server)
	101	{
	102	__u64 mid;
	103	/* for SMB2 we need the current value */
	104	spin_lock(&GlobalMid_Lock);
	105	mid = server->CurrentMid++;
	106	spin_unlock(&GlobalMid_Lock);
	107	return mid;
	108	}
1080ef75	109
093b2bda PS	110	static struct mid_q_entry *
	111	smb2_find_mid(struct TCP_Server_Info server, char buf)
	112	{
	113	struct mid_q_entry *mid;
	114	struct smb2_hdr hdr = (struct smb2_hdr )buf;
	115
	116	spin_lock(&GlobalMid_Lock);
	117	list_for_each_entry(mid, &server->pending_mid_q, qhead) {
	118	if ((mid->mid == hdr->MessageId) &&
	119	(mid->mid_state == MID_REQUEST_SUBMITTED) &&
	120	(mid->command == hdr->Command)) {
	121	spin_unlock(&GlobalMid_Lock);
	122	return mid;
	123	}
	124	}
	125	spin_unlock(&GlobalMid_Lock);
	126	return NULL;
	127	}
	128
	129	static void
	130	smb2_dump_detail(void *buf)
	131	{
	132	#ifdef CONFIG_CIFS_DEBUG2
	133	struct smb2_hdr smb = (struct smb2_hdr )buf;
	134
	135	cERROR(1, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d",
	136	smb->Command, smb->Status, smb->Flags, smb->MessageId,
	137	smb->ProcessId);
	138	cERROR(1, "smb buf %p len %u", smb, smb2_calc_size(smb));
	139	#endif
	140	}
	141
ec2e4523 PS	142	static bool
	143	smb2_need_neg(struct TCP_Server_Info *server)
	144	{
	145	return server->max_read == 0;
	146	}
	147
	148	static int
	149	smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
	150	{
	151	int rc;
	152	ses->server->CurrentMid = 0;
	153	rc = SMB2_negotiate(xid, ses);
	154	/* BB we probably don't need to retry with modern servers */
	155	if (rc == -EAGAIN)
	156	rc = -EHOSTDOWN;
	157	return rc;
	158	}
	159
2503a0db PS	160	static int
	161	smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
	162	struct cifs_sb_info cifs_sb, const char full_path)
	163	{
	164	int rc;
	165	__u64 persistent_fid, volatile_fid;
	166	__le16 *utf16_path;
	167
	168	utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
	169	if (!utf16_path)
	170	return -ENOMEM;
	171
	172	rc = SMB2_open(xid, tcon, utf16_path, &persistent_fid, &volatile_fid,
f0df737e	173	FILE_READ_ATTRIBUTES, FILE_OPEN, 0, 0, NULL);
2503a0db PS	174	if (rc) {
	175	kfree(utf16_path);
	176	return rc;
	177	}
	178
	179	rc = SMB2_close(xid, tcon, persistent_fid, volatile_fid);
	180	kfree(utf16_path);
	181	return rc;
	182	}
	183
be4cb9e3 PS	184	static int
	185	smb2_get_srv_inum(const unsigned int xid, struct cifs_tcon *tcon,
	186	struct cifs_sb_info cifs_sb, const char full_path,
	187	u64 uniqueid, FILE_ALL_INFO data)
	188	{
	189	*uniqueid = le64_to_cpu(data->IndexNumber);
	190	return 0;
	191	}
	192
b7546bc5 PS	193	static int
	194	smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
	195	struct cifs_fid fid, FILE_ALL_INFO data)
	196	{
	197	int rc;
	198	struct smb2_file_all_info *smb2_data;
	199
	200	smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2,
	201	GFP_KERNEL);
	202	if (smb2_data == NULL)
	203	return -ENOMEM;
	204
	205	rc = SMB2_query_info(xid, tcon, fid->persistent_fid, fid->volatile_fid,
	206	smb2_data);
	207	if (!rc)
	208	move_smb2_info_to_cifs(data, smb2_data);
	209	kfree(smb2_data);
	210	return rc;
	211	}
	212
25e26632 PS	213	static char *
	214	smb2_build_path_to_root(struct smb_vol vol, struct cifs_sb_info cifs_sb,
	215	struct cifs_tcon *tcon)
	216	{
	217	int pplen = vol->prepath ? strlen(vol->prepath) : 0;
	218	char *full_path = NULL;
	219
	220	/* if no prefix path, simply set path to the root of share to "" */
	221	if (pplen == 0) {
	222	full_path = kzalloc(2, GFP_KERNEL);
	223	return full_path;
	224	}
	225
	226	cERROR(1, "prefixpath is not supported for SMB2 now");
	227	return NULL;
	228	}
	229
9094fad1 PS	230	static bool
	231	smb2_can_echo(struct TCP_Server_Info *server)
	232	{
	233	return server->echoes;
	234	}
	235
d60622eb PS	236	static void
	237	smb2_clear_stats(struct cifs_tcon *tcon)
	238	{
	239	#ifdef CONFIG_CIFS_STATS
	240	int i;
	241	for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
	242	atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
	243	atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
	244	}
	245	#endif
	246	}
	247
	248	static void
	249	smb2_print_stats(struct seq_file m, struct cifs_tcon tcon)
	250	{
	251	#ifdef CONFIG_CIFS_STATS
	252	atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
	253	atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
	254	seq_printf(m, "\nNegotiates: %d sent %d failed",
	255	atomic_read(&sent[SMB2_NEGOTIATE_HE]),
	256	atomic_read(&failed[SMB2_NEGOTIATE_HE]));
	257	seq_printf(m, "\nSessionSetups: %d sent %d failed",
	258	atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
	259	atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
	260	#define SMB2LOGOFF 0x0002 /* trivial request/resp */
	261	seq_printf(m, "\nLogoffs: %d sent %d failed",
	262	atomic_read(&sent[SMB2_LOGOFF_HE]),
	263	atomic_read(&failed[SMB2_LOGOFF_HE]));
	264	seq_printf(m, "\nTreeConnects: %d sent %d failed",
	265	atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
	266	atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
	267	seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
	268	atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
	269	atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
	270	seq_printf(m, "\nCreates: %d sent %d failed",
	271	atomic_read(&sent[SMB2_CREATE_HE]),
	272	atomic_read(&failed[SMB2_CREATE_HE]));
	273	seq_printf(m, "\nCloses: %d sent %d failed",
	274	atomic_read(&sent[SMB2_CLOSE_HE]),
	275	atomic_read(&failed[SMB2_CLOSE_HE]));
	276	seq_printf(m, "\nFlushes: %d sent %d failed",
	277	atomic_read(&sent[SMB2_FLUSH_HE]),
	278	atomic_read(&failed[SMB2_FLUSH_HE]));
	279	seq_printf(m, "\nReads: %d sent %d failed",
	280	atomic_read(&sent[SMB2_READ_HE]),
	281	atomic_read(&failed[SMB2_READ_HE]));
	282	seq_printf(m, "\nWrites: %d sent %d failed",
	283	atomic_read(&sent[SMB2_WRITE_HE]),
	284	atomic_read(&failed[SMB2_WRITE_HE]));
	285	seq_printf(m, "\nLocks: %d sent %d failed",
	286	atomic_read(&sent[SMB2_LOCK_HE]),
	287	atomic_read(&failed[SMB2_LOCK_HE]));
	288	seq_printf(m, "\nIOCTLs: %d sent %d failed",
	289	atomic_read(&sent[SMB2_IOCTL_HE]),
	290	atomic_read(&failed[SMB2_IOCTL_HE]));
	291	seq_printf(m, "\nCancels: %d sent %d failed",
	292	atomic_read(&sent[SMB2_CANCEL_HE]),
	293	atomic_read(&failed[SMB2_CANCEL_HE]));
	294	seq_printf(m, "\nEchos: %d sent %d failed",
	295	atomic_read(&sent[SMB2_ECHO_HE]),
	296	atomic_read(&failed[SMB2_ECHO_HE]));
	297	seq_printf(m, "\nQueryDirectories: %d sent %d failed",
	298	atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
	299	atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
300	seq_printf(m, "\nChangeNotifies: %d sent %d failed",
301	atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
302	atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
303	seq_printf(m, "\nQueryInfos: %d sent %d failed",
304	atomic_read(&sent[SMB2_QUERY_INFO_HE]),
305	atomic_read(&failed[SMB2_QUERY_INFO_HE]));
306	seq_printf(m, "\nSetInfos: %d sent %d failed",
307	atomic_read(&sent[SMB2_SET_INFO_HE]),
308	atomic_read(&failed[SMB2_SET_INFO_HE]));
309	seq_printf(m, "\nOplockBreaks: %d sent %d failed",
310	atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
311	atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
312	#endif
313	}
314
f0df737e PS	315	static void
	316	smb2_set_fid(struct cifsFileInfo cfile, struct cifs_fid fid, __u32 oplock)
	317	{
	318	/* struct cifsInodeInfo cinode = CIFS_I(cfile->dentry->d_inode); /
	319	cfile->fid.persistent_fid = fid->persistent_fid;
	320	cfile->fid.volatile_fid = fid->volatile_fid;
	321	/* cifs_set_oplock_level(cinode, oplock); */
	322	/* cinode->can_cache_brlcks = cinode->clientCanCacheAll; */
	323	}
	324
	325	static int
	326	smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
	327	struct cifs_fid *fid)
	328	{
	329	return SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
	330	}
	331
1080ef75	332	struct smb_version_operations smb21_operations = {
2dc7e1c0	333	.setup_request = smb2_setup_request,
c95b8eed	334	.setup_async_request = smb2_setup_async_request,
2dc7e1c0	335	.check_receive = smb2_check_receive,
28ea5290 PS	336	.add_credits = smb2_add_credits,
	337	.set_credits = smb2_set_credits,
	338	.get_credits_field = smb2_get_credits_field,
	339	.get_credits = smb2_get_credits,
2dc7e1c0	340	.get_next_mid = smb2_get_next_mid,
093b2bda PS	341	.find_mid = smb2_find_mid,
	342	.check_message = smb2_check_message,
	343	.dump_detail = smb2_dump_detail,
d60622eb PS	344	.clear_stats = smb2_clear_stats,
d60622eb PS	345	.print_stats = smb2_print_stats,
ec2e4523 PS	346	.need_neg = smb2_need_neg,
ec2e4523 PS	347	.negotiate = smb2_negotiate,
5478f9ba PS	348	.sess_setup = SMB2_sess_setup,
5478f9ba PS	349	.logoff = SMB2_logoff,
faaf946a PS	350	.tree_connect = SMB2_tcon,
faaf946a PS	351	.tree_disconnect = SMB2_tdis,
2503a0db	352	.is_path_accessible = smb2_is_path_accessible,
9094fad1 PS	353	.can_echo = smb2_can_echo,
9094fad1 PS	354	.echo = SMB2_echo,
be4cb9e3 PS	355	.query_path_info = smb2_query_path_info,
be4cb9e3 PS	356	.get_srv_inum = smb2_get_srv_inum,
b7546bc5	357	.query_file_info = smb2_query_file_info,
25e26632	358	.build_path_to_root = smb2_build_path_to_root,
a0e73183 PS	359	.mkdir = smb2_mkdir,
a0e73183 PS	360	.mkdir_setinfo = smb2_mkdir_setinfo,
1a500f01	361	.rmdir = smb2_rmdir,
cbe6f439	362	.unlink = smb2_unlink,
f0df737e PS	363	.open = smb2_open_file,
	364	.set_fid = smb2_set_fid,
	365	.close = smb2_close_file,
1080ef75 SF	366	};
	367
	368	struct smb_version_values smb21_values = {
	369	.version_string = SMB21_VERSION_STRING,
093b2bda PS	370	.header_size = sizeof(struct smb2_hdr),
093b2bda PS	371	.max_header_size = MAX_SMB2_HDR_SIZE,
2dc7e1c0	372	.lock_cmd = SMB2_LOCK,
29e20f9c PS	373	.cap_unix = 0,
	374	.cap_nt_find = SMB2_NT_FIND,
	375	.cap_large_files = SMB2_LARGE_FILES,
1080ef75	376	};