smb: move client and server files to common directory fs/smb

Move CIFS/SMB3 related client and server files (cifs.ko and ksmbd.ko
and helper modules) to new fs/smb subdirectory:

   fs/cifs --> fs/smb/client
   fs/ksmbd --> fs/smb/server
   fs/smbfs_common --> fs/smb/common

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 0 insertions, 1087 deletions

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
deleted file mode 100644
index 5034b862cec2..000000000000
--- a/fs/cifs/cifs_debug.c
+++ /dev/null
@@ -1,1087 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *
- *   Copyright (C) International Business Machines  Corp., 2000,2005
- *
- *   Modified by Steve French (sfrench@us.ibm.com)
- */
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-#include <linux/kstrtox.h>
-#include <linux/module.h>
-#include <linux/proc_fs.h>
-#include <linux/uaccess.h>
-#include "cifspdu.h"
-#include "cifsglob.h"
-#include "cifsproto.h"
-#include "cifs_debug.h"
-#include "cifsfs.h"
-#include "fs_context.h"
-#ifdef CONFIG_CIFS_DFS_UPCALL
-#include "dfs_cache.h"
-#endif
-#ifdef CONFIG_CIFS_SMB_DIRECT
-#include "smbdirect.h"
-#endif
-#include "cifs_swn.h"
-
-void
-cifs_dump_mem(char *label, void *data, int length)
-{
-	pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
-	print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
-		       data, length, true);
-}
-
-void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
-{
-#ifdef CONFIG_CIFS_DEBUG2
-	struct smb_hdr *smb = buf;
-
-	cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d\n",
-		 smb->Command, smb->Status.CifsError,
-		 smb->Flags, smb->Flags2, smb->Mid, smb->Pid);
-	cifs_dbg(VFS, "smb buf %p len %u\n", smb,
-		 server->ops->calc_smb_size(smb));
-#endif /* CONFIG_CIFS_DEBUG2 */
-}
-
-void cifs_dump_mids(struct TCP_Server_Info *server)
-{
-#ifdef CONFIG_CIFS_DEBUG2
-	struct mid_q_entry *mid_entry;
-
-	if (server == NULL)
-		return;
-
-	cifs_dbg(VFS, "Dump pending requests:\n");
-	spin_lock(&server->mid_lock);
-	list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
-		cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
-			 mid_entry->mid_state,
-			 le16_to_cpu(mid_entry->command),
-			 mid_entry->pid,
-			 mid_entry->callback_data,
-			 mid_entry->mid);
-#ifdef CONFIG_CIFS_STATS2
-		cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
-			 mid_entry->large_buf,
-			 mid_entry->resp_buf,
-			 mid_entry->when_received,
-			 jiffies);
-#endif /* STATS2 */
-		cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
-			 mid_entry->multiRsp, mid_entry->multiEnd);
-		if (mid_entry->resp_buf) {
-			cifs_dump_detail(mid_entry->resp_buf, server);
-			cifs_dump_mem("existing buf: ",
-				mid_entry->resp_buf, 62);
-		}
-	}
-	spin_unlock(&server->mid_lock);
-#endif /* CONFIG_CIFS_DEBUG2 */
-}
-
-#ifdef CONFIG_PROC_FS
-static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
-{
-	__u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
-
-	seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
-	if (tcon->nativeFileSystem)
-		seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
-	seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
-		   le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
-		   le32_to_cpu(tcon->fsAttrInfo.Attributes),
-		   le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
-		   tcon->status);
-	if (dev_type == FILE_DEVICE_DISK)
-		seq_puts(m, " type: DISK ");
-	else if (dev_type == FILE_DEVICE_CD_ROM)
-		seq_puts(m, " type: CDROM ");
-	else
-		seq_printf(m, " type: %d ", dev_type);
-
-	seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
-
-	if ((tcon->seal) ||
-	    (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
-	    (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
-		seq_puts(m, " encrypted");
-	if (tcon->nocase)
-		seq_printf(m, " nocase");
-	if (tcon->unix_ext)
-		seq_printf(m, " POSIX Extensions");
-	if (tcon->ses->server->ops->dump_share_caps)
-		tcon->ses->server->ops->dump_share_caps(m, tcon);
-	if (tcon->use_witness)
-		seq_puts(m, " Witness");
-	if (tcon->broken_sparse_sup)
-		seq_puts(m, " nosparse");
-	if (tcon->need_reconnect)
-		seq_puts(m, "\tDISCONNECTED ");
-	seq_putc(m, '\n');
-}
-
-static void
-cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
-{
-	struct TCP_Server_Info *server = chan->server;
-
-	seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
-		   "\n\t\tNumber of credits: %d Dialect 0x%x"
-		   "\n\t\tTCP status: %d Instance: %d"
-		   "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
-		   "\n\t\tIn Send: %d In MaxReq Wait: %d",
-		   i+1, server->conn_id,
-		   server->credits,
-		   server->dialect,
-		   server->tcpStatus,
-		   server->reconnect_instance,
-		   server->srv_count,
-		   server->sec_mode,
-		   in_flight(server),
-		   atomic_read(&server->in_send),
-		   atomic_read(&server->num_waiters));
-}
-
-static void
-cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
-{
-	struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
-	struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
-
-	seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
-	seq_puts(m, "\t\tCapabilities: ");
-	if (iface->rdma_capable)
-		seq_puts(m, "rdma ");
-	if (iface->rss_capable)
-		seq_puts(m, "rss ");
-	seq_putc(m, '\n');
-	if (iface->sockaddr.ss_family == AF_INET)
-		seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
-	else if (iface->sockaddr.ss_family == AF_INET6)
-		seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
-	if (!iface->is_active)
-		seq_puts(m, "\t\t[for-cleanup]\n");
-}
-
-static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
-{
-	struct TCP_Server_Info *server;
-	struct cifs_ses *ses;
-	struct cifs_tcon *tcon;
-	struct cifsFileInfo *cfile;
-
-	seq_puts(m, "# Version:1\n");
-	seq_puts(m, "# Format:\n");
-	seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
-#ifdef CONFIG_CIFS_DEBUG2
-	seq_printf(m, " <filename> <mid>\n");
-#else
-	seq_printf(m, " <filename>\n");
-#endif /* CIFS_DEBUG2 */
-	spin_lock(&cifs_tcp_ses_lock);
-	list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
-		list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
-			list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
-				spin_lock(&tcon->open_file_lock);
-				list_for_each_entry(cfile, &tcon->openFileList, tlist) {
-					seq_printf(m,
-						"0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
-						tcon->tid,
-						ses->Suid,
-						cfile->fid.persistent_fid,
-						cfile->f_flags,
-						cfile->count,
-						cfile->pid,
-						from_kuid(&init_user_ns, cfile->uid),
-						cfile->dentry);
-#ifdef CONFIG_CIFS_DEBUG2
-					seq_printf(m, " %llu\n", cfile->fid.mid);
-#else
-					seq_printf(m, "\n");
-#endif /* CIFS_DEBUG2 */
-				}
-				spin_unlock(&tcon->open_file_lock);
-			}
-		}
-	}
-	spin_unlock(&cifs_tcp_ses_lock);
-	seq_putc(m, '\n');
-	return 0;
-}
-
-static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
-{
-	struct mid_q_entry *mid_entry;
-	struct TCP_Server_Info *server;
-	struct TCP_Server_Info *chan_server;
-	struct cifs_ses *ses;
-	struct cifs_tcon *tcon;
-	struct cifs_server_iface *iface;
-	int c, i, j;
-
-	seq_puts(m,
-		    "Display Internal CIFS Data Structures for Debugging\n"
-		    "---------------------------------------------------\n");
-	seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
-	seq_printf(m, "Features:");
-#ifdef CONFIG_CIFS_DFS_UPCALL
-	seq_printf(m, " DFS");
-#endif
-#ifdef CONFIG_CIFS_FSCACHE
-	seq_printf(m, ",FSCACHE");
-#endif
-#ifdef CONFIG_CIFS_SMB_DIRECT
-	seq_printf(m, ",SMB_DIRECT");
-#endif
-#ifdef CONFIG_CIFS_STATS2
-	seq_printf(m, ",STATS2");
-#else
-	seq_printf(m, ",STATS");
-#endif
-#ifdef CONFIG_CIFS_DEBUG2
-	seq_printf(m, ",DEBUG2");
-#elif defined(CONFIG_CIFS_DEBUG)
-	seq_printf(m, ",DEBUG");
-#endif
-#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
-	seq_printf(m, ",ALLOW_INSECURE_LEGACY");
-#endif
-#ifdef CONFIG_CIFS_POSIX
-	seq_printf(m, ",CIFS_POSIX");
-#endif
-#ifdef CONFIG_CIFS_UPCALL
-	seq_printf(m, ",UPCALL(SPNEGO)");
-#endif
-#ifdef CONFIG_CIFS_XATTR
-	seq_printf(m, ",XATTR");
-#endif
-	seq_printf(m, ",ACL");
-#ifdef CONFIG_CIFS_SWN_UPCALL
-	seq_puts(m, ",WITNESS");
-#endif
-	seq_putc(m, '\n');
-	seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
-	seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
-
-	seq_printf(m, "\nServers: ");
-
-	c = 0;
-	spin_lock(&cifs_tcp_ses_lock);
-	list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
-		/* channel info will be printed as a part of sessions below */
-		if (CIFS_SERVER_IS_CHAN(server))
-			continue;
-
-		c++;
-		seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
-			c, server->conn_id);
-
-		spin_lock(&server->srv_lock);
-		if (server->hostname)
-			seq_printf(m, "Hostname: %s ", server->hostname);
-		spin_unlock(&server->srv_lock);
-#ifdef CONFIG_CIFS_SMB_DIRECT
-		if (!server->rdma)
-			goto skip_rdma;
-
-		if (!server->smbd_conn) {
-			seq_printf(m, "\nSMBDirect transport not available");
-			goto skip_rdma;
-		}
-
-		seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
-			"transport status: %x",
-			server->smbd_conn->protocol,
-			server->smbd_conn->transport_status);
-		seq_printf(m, "\nConn receive_credit_max: %x "
-			"send_credit_target: %x max_send_size: %x",
-			server->smbd_conn->receive_credit_max,
-			server->smbd_conn->send_credit_target,
-			server->smbd_conn->max_send_size);
-		seq_printf(m, "\nConn max_fragmented_recv_size: %x "
-			"max_fragmented_send_size: %x max_receive_size:%x",
-			server->smbd_conn->max_fragmented_recv_size,
-			server->smbd_conn->max_fragmented_send_size,
-			server->smbd_conn->max_receive_size);
-		seq_printf(m, "\nConn keep_alive_interval: %x "
-			"max_readwrite_size: %x rdma_readwrite_threshold: %x",
-			server->smbd_conn->keep_alive_interval,
-			server->smbd_conn->max_readwrite_size,
-			server->smbd_conn->rdma_readwrite_threshold);
-		seq_printf(m, "\nDebug count_get_receive_buffer: %x "
-			"count_put_receive_buffer: %x count_send_empty: %x",
-			server->smbd_conn->count_get_receive_buffer,
-			server->smbd_conn->count_put_receive_buffer,
-			server->smbd_conn->count_send_empty);
-		seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
-			"count_enqueue_reassembly_queue: %x "
-			"count_dequeue_reassembly_queue: %x "
-			"fragment_reassembly_remaining: %x "
-			"reassembly_data_length: %x "
-			"reassembly_queue_length: %x",
-			server->smbd_conn->count_reassembly_queue,
-			server->smbd_conn->count_enqueue_reassembly_queue,
-			server->smbd_conn->count_dequeue_reassembly_queue,
-			server->smbd_conn->fragment_reassembly_remaining,
-			server->smbd_conn->reassembly_data_length,
-			server->smbd_conn->reassembly_queue_length);
-		seq_printf(m, "\nCurrent Credits send_credits: %x "
-			"receive_credits: %x receive_credit_target: %x",
-			atomic_read(&server->smbd_conn->send_credits),
-			atomic_read(&server->smbd_conn->receive_credits),
-			server->smbd_conn->receive_credit_target);
-		seq_printf(m, "\nPending send_pending: %x ",
-			atomic_read(&server->smbd_conn->send_pending));
-		seq_printf(m, "\nReceive buffers count_receive_queue: %x "
-			"count_empty_packet_queue: %x",
-			server->smbd_conn->count_receive_queue,
-			server->smbd_conn->count_empty_packet_queue);
-		seq_printf(m, "\nMR responder_resources: %x "
-			"max_frmr_depth: %x mr_type: %x",
-			server->smbd_conn->responder_resources,
-			server->smbd_conn->max_frmr_depth,
-			server->smbd_conn->mr_type);
-		seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
-			atomic_read(&server->smbd_conn->mr_ready_count),
-			atomic_read(&server->smbd_conn->mr_used_count));
-skip_rdma:
-#endif
-		seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
-			server->credits,  server->dialect);
-		if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
-			seq_printf(m, " COMPRESS_LZNT1");
-		else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
-			seq_printf(m, " COMPRESS_LZ77");
-		else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
-			seq_printf(m, " COMPRESS_LZ77_HUFF");
-		if (server->sign)
-			seq_printf(m, " signed");
-		if (server->posix_ext_supported)
-			seq_printf(m, " posix");
-		if (server->nosharesock)
-			seq_printf(m, " nosharesock");
-
-		if (server->rdma)
-			seq_printf(m, "\nRDMA ");
-		seq_printf(m, "\nTCP status: %d Instance: %d"
-				"\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
-				server->tcpStatus,
-				server->reconnect_instance,
-				server->srv_count,
-				server->sec_mode, in_flight(server));
-
-		seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
-				atomic_read(&server->in_send),
-				atomic_read(&server->num_waiters));
-		if (IS_ENABLED(CONFIG_CIFS_DFS_UPCALL)) {
-			if (server->origin_fullpath)
-				seq_printf(m, "\nDFS origin full path: %s",
-					   server->origin_fullpath);
-			if (server->leaf_fullpath)
-				seq_printf(m, "\nDFS leaf full path:   %s",
-					   server->leaf_fullpath);
-		}
-
-		seq_printf(m, "\n\n\tSessions: ");
-		i = 0;
-		list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
-			i++;
-			if ((ses->serverDomain == NULL) ||
-				(ses->serverOS == NULL) ||
-				(ses->serverNOS == NULL)) {
-				seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
-					i, ses->ip_addr, ses->ses_count,
-					ses->capabilities, ses->ses_status);
-				if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
-					seq_printf(m, "Guest ");
-				else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
-					seq_printf(m, "Anonymous ");
-			} else {
-				seq_printf(m,
-				    "\n\t%d) Name: %s  Domain: %s Uses: %d OS: %s "
-				    "\n\tNOS: %s\tCapability: 0x%x"
-					"\n\tSMB session status: %d ",
-				i, ses->ip_addr, ses->serverDomain,
-				ses->ses_count, ses->serverOS, ses->serverNOS,
-				ses->capabilities, ses->ses_status);
-			}
-
-			seq_printf(m, "\n\tSecurity type: %s ",
-				get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
-
-			/* dump session id helpful for use with network trace */
-			seq_printf(m, " SessionId: 0x%llx", ses->Suid);
-			if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) {
-				seq_puts(m, " encrypted");
-				/* can help in debugging to show encryption type */
-				if (server->cipher_type == SMB2_ENCRYPTION_AES256_GCM)
-					seq_puts(m, "(gcm256)");
-			}
-			if (ses->sign)
-				seq_puts(m, " signed");
-
-			seq_printf(m, "\n\tUser: %d Cred User: %d",
-				   from_kuid(&init_user_ns, ses->linux_uid),
-				   from_kuid(&init_user_ns, ses->cred_uid));
-
-			if (ses->dfs_root_ses) {
-				seq_printf(m, "\n\tDFS root session id: 0x%llx",
-					   ses->dfs_root_ses->Suid);
-			}
-
-			spin_lock(&ses->chan_lock);
-			if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
-				seq_puts(m, "\tPrimary channel: DISCONNECTED ");
-			if (CIFS_CHAN_IN_RECONNECT(ses, 0))
-				seq_puts(m, "\t[RECONNECTING] ");
-
-			if (ses->chan_count > 1) {
-				seq_printf(m, "\n\n\tExtra Channels: %zu ",
-					   ses->chan_count-1);
-				for (j = 1; j < ses->chan_count; j++) {
-					cifs_dump_channel(m, j, &ses->chans[j]);
-					if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
-						seq_puts(m, "\tDISCONNECTED ");
-					if (CIFS_CHAN_IN_RECONNECT(ses, j))
-						seq_puts(m, "\t[RECONNECTING] ");
-				}
-			}
-			spin_unlock(&ses->chan_lock);
-
-			seq_puts(m, "\n\n\tShares: ");
-			j = 0;
-
-			seq_printf(m, "\n\t%d) IPC: ", j);
-			if (ses->tcon_ipc)
-				cifs_debug_tcon(m, ses->tcon_ipc);
-			else
-				seq_puts(m, "none\n");
-
-			list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
-				++j;
-				seq_printf(m, "\n\t%d) ", j);
-				cifs_debug_tcon(m, tcon);
-			}
-
-			spin_lock(&ses->iface_lock);
-			if (ses->iface_count)
-				seq_printf(m, "\n\n\tServer interfaces: %zu"
-					   "\tLast updated: %lu seconds ago",
-					   ses->iface_count,
-					   (jiffies - ses->iface_last_update) / HZ);
-			j = 0;
-			list_for_each_entry(iface, &ses->iface_list,
-						 iface_head) {
-				seq_printf(m, "\n\t%d)", ++j);
-				cifs_dump_iface(m, iface);
-				if (is_ses_using_iface(ses, iface))
-					seq_puts(m, "\t\t[CONNECTED]\n");
-			}
-			spin_unlock(&ses->iface_lock);
-
-			seq_puts(m, "\n\n\tMIDs: ");
-			spin_lock(&ses->chan_lock);
-			for (j = 0; j < ses->chan_count; j++) {
-				chan_server = ses->chans[j].server;
-				if (!chan_server)
-					continue;
-
-				if (list_empty(&chan_server->pending_mid_q))
-					continue;
-
-				seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
-					   chan_server->conn_id);
-				spin_lock(&chan_server->mid_lock);
-				list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
-					seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
-						   mid_entry->mid_state,
-						   le16_to_cpu(mid_entry->command),
-						   mid_entry->pid,
-						   mid_entry->callback_data,
-						   mid_entry->mid);
-				}
-				spin_unlock(&chan_server->mid_lock);
-			}
-			spin_unlock(&ses->chan_lock);
-			seq_puts(m, "\n--\n");
-		}
-		if (i == 0)
-			seq_printf(m, "\n\t\t[NONE]");
-	}
-	if (c == 0)
-		seq_printf(m, "\n\t[NONE]");
-
-	spin_unlock(&cifs_tcp_ses_lock);
-	seq_putc(m, '\n');
-	cifs_swn_dump(m);
-
-	/* BB add code to dump additional info such as TCP session info now */
-	return 0;
-}
-
-static ssize_t cifs_stats_proc_write(struct file *file,
-		const char __user *buffer, size_t count, loff_t *ppos)
-{
-	bool bv;
-	int rc;
-	struct TCP_Server_Info *server;
-	struct cifs_ses *ses;
-	struct cifs_tcon *tcon;
-
-	rc = kstrtobool_from_user(buffer, count, &bv);
-	if (rc == 0) {
-#ifdef CONFIG_CIFS_STATS2
-		int i;
-
-		atomic_set(&total_buf_alloc_count, 0);
-		atomic_set(&total_small_buf_alloc_count, 0);
-#endif /* CONFIG_CIFS_STATS2 */
-		atomic_set(&tcpSesReconnectCount, 0);
-		atomic_set(&tconInfoReconnectCount, 0);
-
-		spin_lock(&GlobalMid_Lock);
-		GlobalMaxActiveXid = 0;
-		GlobalCurrentXid = 0;
-		spin_unlock(&GlobalMid_Lock);
-		spin_lock(&cifs_tcp_ses_lock);
-		list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
-			server->max_in_flight = 0;
-#ifdef CONFIG_CIFS_STATS2
-			for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
-				atomic_set(&server->num_cmds[i], 0);
-				atomic_set(&server->smb2slowcmd[i], 0);
-				server->time_per_cmd[i] = 0;
-				server->slowest_cmd[i] = 0;
-				server->fastest_cmd[0] = 0;
-			}
-#endif /* CONFIG_CIFS_STATS2 */
-			list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
-				list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
-					atomic_set(&tcon->num_smbs_sent, 0);
-					spin_lock(&tcon->stat_lock);
-					tcon->bytes_read = 0;
-					tcon->bytes_written = 0;
-					spin_unlock(&tcon->stat_lock);
-					if (server->ops->clear_stats)
-						server->ops->clear_stats(tcon);
-				}
-			}
-		}
-		spin_unlock(&cifs_tcp_ses_lock);
-	} else {
-		return rc;
-	}
-
-	return count;
-}
-
-static int cifs_stats_proc_show(struct seq_file *m, void *v)
-{
-	int i;
-#ifdef CONFIG_CIFS_STATS2
-	int j;
-#endif /* STATS2 */
-	struct TCP_Server_Info *server;
-	struct cifs_ses *ses;
-	struct cifs_tcon *tcon;
-
-	seq_printf(m, "Resources in use\nCIFS Session: %d\n",
-			sesInfoAllocCount.counter);
-	seq_printf(m, "Share (unique mount targets): %d\n",
-			tconInfoAllocCount.counter);
-	seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
-			buf_alloc_count.counter,
-			cifs_min_rcv + tcpSesAllocCount.counter);
-	seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
-			small_buf_alloc_count.counter, cifs_min_small);
-#ifdef CONFIG_CIFS_STATS2
-	seq_printf(m, "Total Large %d Small %d Allocations\n",
-				atomic_read(&total_buf_alloc_count),
-				atomic_read(&total_small_buf_alloc_count));
-#endif /* CONFIG_CIFS_STATS2 */
-
-	seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
-	seq_printf(m,
-		"\n%d session %d share reconnects\n",
-		tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
-
-	seq_printf(m,
-		"Total vfs operations: %d maximum at one time: %d\n",
-		GlobalCurrentXid, GlobalMaxActiveXid);
-
-	i = 0;
-	spin_lock(&cifs_tcp_ses_lock);
-	list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
-		seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
-#ifdef CONFIG_CIFS_STATS2
-		seq_puts(m, "\nTotal time spent processing by command. Time ");
-		seq_printf(m, "units are jiffies (%d per second)\n", HZ);
-		seq_puts(m, "  SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
-		seq_puts(m, "  --------\t------\t----------\t-------\t-------\n");
-		for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
-			seq_printf(m, "  %d\t\t%d\t%llu\t\t%u\t%u\n", j,
-				atomic_read(&server->num_cmds[j]),
-				server->time_per_cmd[j],
-				server->fastest_cmd[j],
-				server->slowest_cmd[j]);
-		for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
-			if (atomic_read(&server->smb2slowcmd[j])) {
-				spin_lock(&server->srv_lock);
-				seq_printf(m, "  %d slow responses from %s for command %d\n",
-					atomic_read(&server->smb2slowcmd[j]),
-					server->hostname, j);
-				spin_unlock(&server->srv_lock);
-			}
-#endif /* STATS2 */
-		list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
-			list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
-				i++;
-				seq_printf(m, "\n%d) %s", i, tcon->tree_name);
-				if (tcon->need_reconnect)
-					seq_puts(m, "\tDISCONNECTED ");
-				seq_printf(m, "\nSMBs: %d",
-					   atomic_read(&tcon->num_smbs_sent));
-				if (server->ops->print_stats)
-					server->ops->print_stats(m, tcon);
-			}
-		}
-	}
-	spin_unlock(&cifs_tcp_ses_lock);
-
-	seq_putc(m, '\n');
-	return 0;
-}
-
-static int cifs_stats_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifs_stats_proc_show, NULL);
-}
-
-static const struct proc_ops cifs_stats_proc_ops = {
-	.proc_open	= cifs_stats_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= cifs_stats_proc_write,
-};
-
-#ifdef CONFIG_CIFS_SMB_DIRECT
-#define PROC_FILE_DEFINE(name) \
-static ssize_t name##_write(struct file *file, const char __user *buffer, \
-	size_t count, loff_t *ppos) \
-{ \
-	int rc; \
-	rc = kstrtoint_from_user(buffer, count, 10, & name); \
-	if (rc) \
-		return rc; \
-	return count; \
-} \
-static int name##_proc_show(struct seq_file *m, void *v) \
-{ \
-	seq_printf(m, "%d\n", name ); \
-	return 0; \
-} \
-static int name##_open(struct inode *inode, struct file *file) \
-{ \
-	return single_open(file, name##_proc_show, NULL); \
-} \
-\
-static const struct proc_ops cifs_##name##_proc_fops = { \
-	.proc_open	= name##_open, \
-	.proc_read	= seq_read, \
-	.proc_lseek	= seq_lseek, \
-	.proc_release	= single_release, \
-	.proc_write	= name##_write, \
-}
-
-PROC_FILE_DEFINE(rdma_readwrite_threshold);
-PROC_FILE_DEFINE(smbd_max_frmr_depth);
-PROC_FILE_DEFINE(smbd_keep_alive_interval);
-PROC_FILE_DEFINE(smbd_max_receive_size);
-PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
-PROC_FILE_DEFINE(smbd_max_send_size);
-PROC_FILE_DEFINE(smbd_send_credit_target);
-PROC_FILE_DEFINE(smbd_receive_credit_max);
-#endif
-
-static struct proc_dir_entry *proc_fs_cifs;
-static const struct proc_ops cifsFYI_proc_ops;
-static const struct proc_ops cifs_lookup_cache_proc_ops;
-static const struct proc_ops traceSMB_proc_ops;
-static const struct proc_ops cifs_security_flags_proc_ops;
-static const struct proc_ops cifs_linux_ext_proc_ops;
-static const struct proc_ops cifs_mount_params_proc_ops;
-
-void
-cifs_proc_init(void)
-{
-	proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
-	if (proc_fs_cifs == NULL)
-		return;
-
-	proc_create_single("DebugData", 0, proc_fs_cifs,
-			cifs_debug_data_proc_show);
-
-	proc_create_single("open_files", 0400, proc_fs_cifs,
-			cifs_debug_files_proc_show);
-
-	proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
-	proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
-	proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
-	proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
-		    &cifs_linux_ext_proc_ops);
-	proc_create("SecurityFlags", 0644, proc_fs_cifs,
-		    &cifs_security_flags_proc_ops);
-	proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
-		    &cifs_lookup_cache_proc_ops);
-
-	proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
-
-#ifdef CONFIG_CIFS_DFS_UPCALL
-	proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
-#endif
-
-#ifdef CONFIG_CIFS_SMB_DIRECT
-	proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
-		&cifs_rdma_readwrite_threshold_proc_fops);
-	proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
-		&cifs_smbd_max_frmr_depth_proc_fops);
-	proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
-		&cifs_smbd_keep_alive_interval_proc_fops);
-	proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
-		&cifs_smbd_max_receive_size_proc_fops);
-	proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
-		&cifs_smbd_max_fragmented_recv_size_proc_fops);
-	proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
-		&cifs_smbd_max_send_size_proc_fops);
-	proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
-		&cifs_smbd_send_credit_target_proc_fops);
-	proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
-		&cifs_smbd_receive_credit_max_proc_fops);
-#endif
-}
-
-void
-cifs_proc_clean(void)
-{
-	if (proc_fs_cifs == NULL)
-		return;
-
-	remove_proc_entry("DebugData", proc_fs_cifs);
-	remove_proc_entry("open_files", proc_fs_cifs);
-	remove_proc_entry("cifsFYI", proc_fs_cifs);
-	remove_proc_entry("traceSMB", proc_fs_cifs);
-	remove_proc_entry("Stats", proc_fs_cifs);
-	remove_proc_entry("SecurityFlags", proc_fs_cifs);
-	remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
-	remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
-	remove_proc_entry("mount_params", proc_fs_cifs);
-
-#ifdef CONFIG_CIFS_DFS_UPCALL
-	remove_proc_entry("dfscache", proc_fs_cifs);
-#endif
-#ifdef CONFIG_CIFS_SMB_DIRECT
-	remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
-	remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
-	remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
-	remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
-	remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
-	remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
-	remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
-	remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
-#endif
-	remove_proc_entry("fs/cifs", NULL);
-}
-
-static int cifsFYI_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "%d\n", cifsFYI);
-	return 0;
-}
-
-static int cifsFYI_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifsFYI_proc_show, NULL);
-}
-
-static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
-		size_t count, loff_t *ppos)
-{
-	char c[2] = { '\0' };
-	bool bv;
-	int rc;
-
-	rc = get_user(c[0], buffer);
-	if (rc)
-		return rc;
-	if (kstrtobool(c, &bv) == 0)
-		cifsFYI = bv;
-	else if ((c[0] > '1') && (c[0] <= '9'))
-		cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
-	else
-		return -EINVAL;
-
-	return count;
-}
-
-static const struct proc_ops cifsFYI_proc_ops = {
-	.proc_open	= cifsFYI_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= cifsFYI_proc_write,
-};
-
-static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "%d\n", linuxExtEnabled);
-	return 0;
-}
-
-static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifs_linux_ext_proc_show, NULL);
-}
-
-static ssize_t cifs_linux_ext_proc_write(struct file *file,
-		const char __user *buffer, size_t count, loff_t *ppos)
-{
-	int rc;
-
-	rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
-	if (rc)
-		return rc;
-
-	return count;
-}
-
-static const struct proc_ops cifs_linux_ext_proc_ops = {
-	.proc_open	= cifs_linux_ext_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= cifs_linux_ext_proc_write,
-};
-
-static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "%d\n", lookupCacheEnabled);
-	return 0;
-}
-
-static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifs_lookup_cache_proc_show, NULL);
-}
-
-static ssize_t cifs_lookup_cache_proc_write(struct file *file,
-		const char __user *buffer, size_t count, loff_t *ppos)
-{
-	int rc;
-
-	rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
-	if (rc)
-		return rc;
-
-	return count;
-}
-
-static const struct proc_ops cifs_lookup_cache_proc_ops = {
-	.proc_open	= cifs_lookup_cache_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= cifs_lookup_cache_proc_write,
-};
-
-static int traceSMB_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "%d\n", traceSMB);
-	return 0;
-}
-
-static int traceSMB_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, traceSMB_proc_show, NULL);
-}
-
-static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
-		size_t count, loff_t *ppos)
-{
-	int rc;
-
-	rc = kstrtobool_from_user(buffer, count, &traceSMB);
-	if (rc)
-		return rc;
-
-	return count;
-}
-
-static const struct proc_ops traceSMB_proc_ops = {
-	.proc_open	= traceSMB_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= traceSMB_proc_write,
-};
-
-static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "0x%x\n", global_secflags);
-	return 0;
-}
-
-static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifs_security_flags_proc_show, NULL);
-}
-
-/*
- * Ensure that if someone sets a MUST flag, that we disable all other MAY
- * flags except for the ones corresponding to the given MUST flag. If there are
- * multiple MUST flags, then try to prefer more secure ones.
- */
-static void
-cifs_security_flags_handle_must_flags(unsigned int *flags)
-{
-	unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
-
-	if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
-		*flags = CIFSSEC_MUST_KRB5;
-	else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
-		*flags = CIFSSEC_MUST_NTLMSSP;
-	else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
-		*flags = CIFSSEC_MUST_NTLMV2;
-
-	*flags |= signflags;
-}
-
-static ssize_t cifs_security_flags_proc_write(struct file *file,
-		const char __user *buffer, size_t count, loff_t *ppos)
-{
-	int rc;
-	unsigned int flags;
-	char flags_string[12];
-	bool bv;
-
-	if ((count < 1) || (count > 11))
-		return -EINVAL;
-
-	memset(flags_string, 0, 12);
-
-	if (copy_from_user(flags_string, buffer, count))
-		return -EFAULT;
-
-	if (count < 3) {
-		/* single char or single char followed by null */
-		if (kstrtobool(flags_string, &bv) == 0) {
-			global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
-			return count;
-		} else if (!isdigit(flags_string[0])) {
-			cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
-					flags_string);
-			return -EINVAL;
-		}
-	}
-
-	/* else we have a number */
-	rc = kstrtouint(flags_string, 0, &flags);
-	if (rc) {
-		cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
-				flags_string);
-		return rc;
-	}
-
-	cifs_dbg(FYI, "sec flags 0x%x\n", flags);
-
-	if (flags == 0)  {
-		cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
-		return -EINVAL;
-	}
-
-	if (flags & ~CIFSSEC_MASK) {
-		cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
-			 flags & ~CIFSSEC_MASK);
-		return -EINVAL;
-	}
-
-	cifs_security_flags_handle_must_flags(&flags);
-
-	/* flags look ok - update the global security flags for cifs module */
-	global_secflags = flags;
-	if (global_secflags & CIFSSEC_MUST_SIGN) {
-		/* requiring signing implies signing is allowed */
-		global_secflags |= CIFSSEC_MAY_SIGN;
-		cifs_dbg(FYI, "packet signing now required\n");
-	} else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
-		cifs_dbg(FYI, "packet signing disabled\n");
-	}
-	/* BB should we turn on MAY flags for other MUST options? */
-	return count;
-}
-
-static const struct proc_ops cifs_security_flags_proc_ops = {
-	.proc_open	= cifs_security_flags_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= cifs_security_flags_proc_write,
-};
-
-/* To make it easier to debug, can help to show mount params */
-static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
-{
-	const struct fs_parameter_spec *p;
-	const char *type;
-
-	for (p = smb3_fs_parameters; p->name; p++) {
-		/* cannot use switch with pointers... */
-		if (!p->type) {
-			if (p->flags == fs_param_neg_with_no)
-				type = "noflag";
-			else
-				type = "flag";
-		} else if (p->type == fs_param_is_bool)
-			type = "bool";
-		else if (p->type == fs_param_is_u32)
-			type = "u32";
-		else if (p->type == fs_param_is_u64)
-			type = "u64";
-		else if (p->type == fs_param_is_string)
-			type = "string";
-		else
-			type = "unknown";
-
-		seq_printf(m, "%s:%s\n", p->name, type);
-	}
-
-	return 0;
-}
-
-static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, cifs_mount_params_proc_show, NULL);
-}
-
-static const struct proc_ops cifs_mount_params_proc_ops = {
-	.proc_open	= cifs_mount_params_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	/* No need for write for now */
-	/* .proc_write	= cifs_mount_params_proc_write, */
-};
-
-#else
-inline void cifs_proc_init(void)
-{
-}
-
-inline void cifs_proc_clean(void)
-{
-}
-#endif /* PROC_FS */