1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (C) International Business Machines Corp., 2000,2005
6 * Modified by Steve French (sfrench@us.ibm.com)
9 #include <linux/string.h>
10 #include <linux/ctype.h>
11 #include <linux/module.h>
12 #include <linux/proc_fs.h>
13 #include <linux/uaccess.h>
16 #include "cifsproto.h"
17 #include "cifs_debug.h"
19 #include "fs_context.h"
20 #ifdef CONFIG_CIFS_DFS_UPCALL
21 #include "dfs_cache.h"
23 #ifdef CONFIG_CIFS_SMB_DIRECT
24 #include "smbdirect.h"
29 cifs_dump_mem(char *label, void *data, int length)
31 pr_debug("%s: dump of %d bytes of data at 0x%p\n", label, length, data);
32 print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, 4,
36 void cifs_dump_detail(void *buf, struct TCP_Server_Info *server)
38 #ifdef CONFIG_CIFS_DEBUG2
39 struct smb_hdr *smb = buf;
41 cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d Wct: %d\n",
42 smb->Command, smb->Status.CifsError, smb->Flags,
43 smb->Flags2, smb->Mid, smb->Pid, smb->WordCount);
44 if (!server->ops->check_message(buf, server->total_read, server)) {
45 cifs_dbg(VFS, "smb buf %p len %u\n", smb,
46 server->ops->calc_smb_size(smb));
48 #endif /* CONFIG_CIFS_DEBUG2 */
51 void cifs_dump_mids(struct TCP_Server_Info *server)
53 #ifdef CONFIG_CIFS_DEBUG2
54 struct mid_q_entry *mid_entry;
59 cifs_dbg(VFS, "Dump pending requests:\n");
60 spin_lock(&server->mid_lock);
61 list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) {
62 cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n",
64 le16_to_cpu(mid_entry->command),
66 mid_entry->callback_data,
68 #ifdef CONFIG_CIFS_STATS2
69 cifs_dbg(VFS, "IsLarge: %d buf: %p time rcv: %ld now: %ld\n",
72 mid_entry->when_received,
75 cifs_dbg(VFS, "IsMult: %d IsEnd: %d\n",
76 mid_entry->multiRsp, mid_entry->multiEnd);
77 if (mid_entry->resp_buf) {
78 cifs_dump_detail(mid_entry->resp_buf, server);
79 cifs_dump_mem("existing buf: ",
80 mid_entry->resp_buf, 62);
83 spin_unlock(&server->mid_lock);
84 #endif /* CONFIG_CIFS_DEBUG2 */
88 static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
90 __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
92 seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count);
93 if (tcon->nativeFileSystem)
94 seq_printf(m, "Type: %s ", tcon->nativeFileSystem);
95 seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d",
96 le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
97 le32_to_cpu(tcon->fsAttrInfo.Attributes),
98 le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
100 if (dev_type == FILE_DEVICE_DISK)
101 seq_puts(m, " type: DISK ");
102 else if (dev_type == FILE_DEVICE_CD_ROM)
103 seq_puts(m, " type: CDROM ");
105 seq_printf(m, " type: %d ", dev_type);
107 seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
110 (tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
111 (tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))
112 seq_printf(m, " Encrypted");
114 seq_printf(m, " nocase");
116 seq_printf(m, " POSIX Extensions");
117 if (tcon->ses->server->ops->dump_share_caps)
118 tcon->ses->server->ops->dump_share_caps(m, tcon);
119 if (tcon->use_witness)
120 seq_puts(m, " Witness");
121 if (tcon->broken_sparse_sup)
122 seq_puts(m, " nosparse");
123 if (tcon->need_reconnect)
124 seq_puts(m, "\tDISCONNECTED ");
129 cifs_dump_channel(struct seq_file *m, int i, struct cifs_chan *chan)
131 struct TCP_Server_Info *server = chan->server;
133 seq_printf(m, "\n\n\t\tChannel: %d ConnectionId: 0x%llx"
134 "\n\t\tNumber of credits: %d Dialect 0x%x"
135 "\n\t\tTCP status: %d Instance: %d"
136 "\n\t\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d"
137 "\n\t\tIn Send: %d In MaxReq Wait: %d",
138 i+1, server->conn_id,
142 server->reconnect_instance,
146 atomic_read(&server->in_send),
147 atomic_read(&server->num_waiters));
151 cifs_dump_iface(struct seq_file *m, struct cifs_server_iface *iface)
153 struct sockaddr_in *ipv4 = (struct sockaddr_in *)&iface->sockaddr;
154 struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)&iface->sockaddr;
156 seq_printf(m, "\tSpeed: %zu bps\n", iface->speed);
157 seq_puts(m, "\t\tCapabilities: ");
158 if (iface->rdma_capable)
159 seq_puts(m, "rdma ");
160 if (iface->rss_capable)
163 if (iface->sockaddr.ss_family == AF_INET)
164 seq_printf(m, "\t\tIPv4: %pI4\n", &ipv4->sin_addr);
165 else if (iface->sockaddr.ss_family == AF_INET6)
166 seq_printf(m, "\t\tIPv6: %pI6\n", &ipv6->sin6_addr);
167 if (!iface->is_active)
168 seq_puts(m, "\t\t[for-cleanup]\n");
171 static int cifs_debug_files_proc_show(struct seq_file *m, void *v)
173 struct TCP_Server_Info *server;
174 struct cifs_ses *ses;
175 struct cifs_tcon *tcon;
176 struct cifsFileInfo *cfile;
178 seq_puts(m, "# Version:1\n");
179 seq_puts(m, "# Format:\n");
180 seq_puts(m, "# <tree id> <ses id> <persistent fid> <flags> <count> <pid> <uid>");
181 #ifdef CONFIG_CIFS_DEBUG2
182 seq_printf(m, " <filename> <mid>\n");
184 seq_printf(m, " <filename>\n");
185 #endif /* CIFS_DEBUG2 */
186 spin_lock(&cifs_tcp_ses_lock);
187 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
188 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
189 if (cifs_ses_exiting(ses))
191 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
192 spin_lock(&tcon->open_file_lock);
193 list_for_each_entry(cfile, &tcon->openFileList, tlist) {
195 "0x%x 0x%llx 0x%llx 0x%x %d %d %d %pd",
198 cfile->fid.persistent_fid,
202 from_kuid(&init_user_ns, cfile->uid),
204 #ifdef CONFIG_CIFS_DEBUG2
205 seq_printf(m, " %llu\n", cfile->fid.mid);
208 #endif /* CIFS_DEBUG2 */
210 spin_unlock(&tcon->open_file_lock);
214 spin_unlock(&cifs_tcp_ses_lock);
219 static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
221 struct mid_q_entry *mid_entry;
222 struct TCP_Server_Info *server;
223 struct TCP_Server_Info *chan_server;
224 struct cifs_ses *ses;
225 struct cifs_tcon *tcon;
226 struct cifs_server_iface *iface;
227 size_t iface_weight = 0, iface_min_speed = 0;
228 struct cifs_server_iface *last_iface = NULL;
232 "Display Internal CIFS Data Structures for Debugging\n"
233 "---------------------------------------------------\n");
234 seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
235 seq_printf(m, "Features:");
236 #ifdef CONFIG_CIFS_DFS_UPCALL
237 seq_printf(m, " DFS");
239 #ifdef CONFIG_CIFS_FSCACHE
240 seq_printf(m, ",FSCACHE");
242 #ifdef CONFIG_CIFS_SMB_DIRECT
243 seq_printf(m, ",SMB_DIRECT");
245 #ifdef CONFIG_CIFS_STATS2
246 seq_printf(m, ",STATS2");
248 seq_printf(m, ",STATS");
250 #ifdef CONFIG_CIFS_DEBUG2
251 seq_printf(m, ",DEBUG2");
252 #elif defined(CONFIG_CIFS_DEBUG)
253 seq_printf(m, ",DEBUG");
255 #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
256 seq_printf(m, ",ALLOW_INSECURE_LEGACY");
258 #ifdef CONFIG_CIFS_POSIX
259 seq_printf(m, ",CIFS_POSIX");
261 #ifdef CONFIG_CIFS_UPCALL
262 seq_printf(m, ",UPCALL(SPNEGO)");
264 #ifdef CONFIG_CIFS_XATTR
265 seq_printf(m, ",XATTR");
267 seq_printf(m, ",ACL");
268 #ifdef CONFIG_CIFS_SWN_UPCALL
269 seq_puts(m, ",WITNESS");
272 seq_printf(m, "CIFSMaxBufSize: %d\n", CIFSMaxBufSize);
273 seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
275 seq_printf(m, "\nServers: ");
278 spin_lock(&cifs_tcp_ses_lock);
279 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
280 /* channel info will be printed as a part of sessions below */
281 if (CIFS_SERVER_IS_CHAN(server))
285 seq_printf(m, "\n%d) ConnectionId: 0x%llx ",
288 spin_lock(&server->srv_lock);
289 if (server->hostname)
290 seq_printf(m, "Hostname: %s ", server->hostname);
291 spin_unlock(&server->srv_lock);
292 #ifdef CONFIG_CIFS_SMB_DIRECT
296 if (!server->smbd_conn) {
297 seq_printf(m, "\nSMBDirect transport not available");
301 seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
302 "transport status: %x",
303 server->smbd_conn->protocol,
304 server->smbd_conn->transport_status);
305 seq_printf(m, "\nConn receive_credit_max: %x "
306 "send_credit_target: %x max_send_size: %x",
307 server->smbd_conn->receive_credit_max,
308 server->smbd_conn->send_credit_target,
309 server->smbd_conn->max_send_size);
310 seq_printf(m, "\nConn max_fragmented_recv_size: %x "
311 "max_fragmented_send_size: %x max_receive_size:%x",
312 server->smbd_conn->max_fragmented_recv_size,
313 server->smbd_conn->max_fragmented_send_size,
314 server->smbd_conn->max_receive_size);
315 seq_printf(m, "\nConn keep_alive_interval: %x "
316 "max_readwrite_size: %x rdma_readwrite_threshold: %x",
317 server->smbd_conn->keep_alive_interval,
318 server->smbd_conn->max_readwrite_size,
319 server->smbd_conn->rdma_readwrite_threshold);
320 seq_printf(m, "\nDebug count_get_receive_buffer: %x "
321 "count_put_receive_buffer: %x count_send_empty: %x",
322 server->smbd_conn->count_get_receive_buffer,
323 server->smbd_conn->count_put_receive_buffer,
324 server->smbd_conn->count_send_empty);
325 seq_printf(m, "\nRead Queue count_reassembly_queue: %x "
326 "count_enqueue_reassembly_queue: %x "
327 "count_dequeue_reassembly_queue: %x "
328 "fragment_reassembly_remaining: %x "
329 "reassembly_data_length: %x "
330 "reassembly_queue_length: %x",
331 server->smbd_conn->count_reassembly_queue,
332 server->smbd_conn->count_enqueue_reassembly_queue,
333 server->smbd_conn->count_dequeue_reassembly_queue,
334 server->smbd_conn->fragment_reassembly_remaining,
335 server->smbd_conn->reassembly_data_length,
336 server->smbd_conn->reassembly_queue_length);
337 seq_printf(m, "\nCurrent Credits send_credits: %x "
338 "receive_credits: %x receive_credit_target: %x",
339 atomic_read(&server->smbd_conn->send_credits),
340 atomic_read(&server->smbd_conn->receive_credits),
341 server->smbd_conn->receive_credit_target);
342 seq_printf(m, "\nPending send_pending: %x ",
343 atomic_read(&server->smbd_conn->send_pending));
344 seq_printf(m, "\nReceive buffers count_receive_queue: %x "
345 "count_empty_packet_queue: %x",
346 server->smbd_conn->count_receive_queue,
347 server->smbd_conn->count_empty_packet_queue);
348 seq_printf(m, "\nMR responder_resources: %x "
349 "max_frmr_depth: %x mr_type: %x",
350 server->smbd_conn->responder_resources,
351 server->smbd_conn->max_frmr_depth,
352 server->smbd_conn->mr_type);
353 seq_printf(m, "\nMR mr_ready_count: %x mr_used_count: %x",
354 atomic_read(&server->smbd_conn->mr_ready_count),
355 atomic_read(&server->smbd_conn->mr_used_count));
358 seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
359 server->credits, server->dialect);
360 if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
361 seq_printf(m, " COMPRESS_LZNT1");
362 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
363 seq_printf(m, " COMPRESS_LZ77");
364 else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
365 seq_printf(m, " COMPRESS_LZ77_HUFF");
367 seq_printf(m, " signed");
368 if (server->posix_ext_supported)
369 seq_printf(m, " posix");
370 if (server->nosharesock)
371 seq_printf(m, " nosharesock");
374 seq_printf(m, "\nRDMA ");
375 seq_printf(m, "\nTCP status: %d Instance: %d"
376 "\nLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
378 server->reconnect_instance,
380 server->sec_mode, in_flight(server));
382 seq_printf(m, "\nIn Send: %d In MaxReq Wait: %d",
383 atomic_read(&server->in_send),
384 atomic_read(&server->num_waiters));
386 seq_printf(m, "\n\n\tSessions: ");
388 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
389 spin_lock(&ses->ses_lock);
390 if (ses->ses_status == SES_EXITING) {
391 spin_unlock(&ses->ses_lock);
395 if ((ses->serverDomain == NULL) ||
396 (ses->serverOS == NULL) ||
397 (ses->serverNOS == NULL)) {
398 seq_printf(m, "\n\t%d) Address: %s Uses: %d Capability: 0x%x\tSession Status: %d ",
399 i, ses->ip_addr, ses->ses_count,
400 ses->capabilities, ses->ses_status);
401 if (ses->session_flags & SMB2_SESSION_FLAG_IS_GUEST)
402 seq_printf(m, "Guest ");
403 else if (ses->session_flags & SMB2_SESSION_FLAG_IS_NULL)
404 seq_printf(m, "Anonymous ");
407 "\n\t%d) Name: %s Domain: %s Uses: %d OS: %s "
408 "\n\tNOS: %s\tCapability: 0x%x"
409 "\n\tSMB session status: %d ",
410 i, ses->ip_addr, ses->serverDomain,
411 ses->ses_count, ses->serverOS, ses->serverNOS,
412 ses->capabilities, ses->ses_status);
414 spin_unlock(&ses->ses_lock);
416 seq_printf(m, "\n\tSecurity type: %s ",
417 get_security_type_str(server->ops->select_sectype(server, ses->sectype)));
419 /* dump session id helpful for use with network trace */
420 seq_printf(m, " SessionId: 0x%llx", ses->Suid);
421 if (ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA)
422 seq_puts(m, " encrypted");
424 seq_puts(m, " signed");
426 seq_printf(m, "\n\tUser: %d Cred User: %d",
427 from_kuid(&init_user_ns, ses->linux_uid),
428 from_kuid(&init_user_ns, ses->cred_uid));
430 spin_lock(&ses->chan_lock);
431 if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
432 seq_puts(m, "\tPrimary channel: DISCONNECTED ");
433 if (CIFS_CHAN_IN_RECONNECT(ses, 0))
434 seq_puts(m, "\t[RECONNECTING] ");
436 if (ses->chan_count > 1) {
437 seq_printf(m, "\n\n\tExtra Channels: %zu ",
439 for (j = 1; j < ses->chan_count; j++) {
440 cifs_dump_channel(m, j, &ses->chans[j]);
441 if (CIFS_CHAN_NEEDS_RECONNECT(ses, j))
442 seq_puts(m, "\tDISCONNECTED ");
443 if (CIFS_CHAN_IN_RECONNECT(ses, j))
444 seq_puts(m, "\t[RECONNECTING] ");
447 spin_unlock(&ses->chan_lock);
449 seq_puts(m, "\n\n\tShares: ");
452 seq_printf(m, "\n\t%d) IPC: ", j);
454 cifs_debug_tcon(m, ses->tcon_ipc);
456 seq_puts(m, "none\n");
458 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
460 seq_printf(m, "\n\t%d) ", j);
461 cifs_debug_tcon(m, tcon);
464 spin_lock(&ses->iface_lock);
465 if (ses->iface_count)
466 seq_printf(m, "\n\n\tServer interfaces: %zu"
467 "\tLast updated: %lu seconds ago",
469 (jiffies - ses->iface_last_update) / HZ);
471 last_iface = list_last_entry(&ses->iface_list,
472 struct cifs_server_iface,
474 iface_min_speed = last_iface->speed;
477 list_for_each_entry(iface, &ses->iface_list,
479 seq_printf(m, "\n\t%d)", ++j);
480 cifs_dump_iface(m, iface);
482 iface_weight = iface->speed / iface_min_speed;
483 seq_printf(m, "\t\tWeight (cur,total): (%zu,%zu)"
484 "\n\t\tAllocated channels: %u\n",
485 iface->weight_fulfilled,
487 iface->num_channels);
489 if (is_ses_using_iface(ses, iface))
490 seq_puts(m, "\t\t[CONNECTED]\n");
492 spin_unlock(&ses->iface_lock);
494 seq_puts(m, "\n\n\tMIDs: ");
495 spin_lock(&ses->chan_lock);
496 for (j = 0; j < ses->chan_count; j++) {
497 chan_server = ses->chans[j].server;
501 if (list_empty(&chan_server->pending_mid_q))
504 seq_printf(m, "\n\tServer ConnectionId: 0x%llx",
505 chan_server->conn_id);
506 spin_lock(&chan_server->mid_lock);
507 list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) {
508 seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu",
509 mid_entry->mid_state,
510 le16_to_cpu(mid_entry->command),
512 mid_entry->callback_data,
515 spin_unlock(&chan_server->mid_lock);
517 spin_unlock(&ses->chan_lock);
518 seq_puts(m, "\n--\n");
521 seq_printf(m, "\n\t\t[NONE]");
524 seq_printf(m, "\n\t[NONE]");
526 spin_unlock(&cifs_tcp_ses_lock);
530 /* BB add code to dump additional info such as TCP session info now */
534 static ssize_t cifs_stats_proc_write(struct file *file,
535 const char __user *buffer, size_t count, loff_t *ppos)
539 struct TCP_Server_Info *server;
540 struct cifs_ses *ses;
541 struct cifs_tcon *tcon;
543 rc = kstrtobool_from_user(buffer, count, &bv);
545 #ifdef CONFIG_CIFS_STATS2
548 atomic_set(&total_buf_alloc_count, 0);
549 atomic_set(&total_small_buf_alloc_count, 0);
550 #endif /* CONFIG_CIFS_STATS2 */
551 atomic_set(&tcpSesReconnectCount, 0);
552 atomic_set(&tconInfoReconnectCount, 0);
554 spin_lock(&GlobalMid_Lock);
555 GlobalMaxActiveXid = 0;
556 GlobalCurrentXid = 0;
557 spin_unlock(&GlobalMid_Lock);
558 spin_lock(&cifs_tcp_ses_lock);
559 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
560 server->max_in_flight = 0;
561 #ifdef CONFIG_CIFS_STATS2
562 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
563 atomic_set(&server->num_cmds[i], 0);
564 atomic_set(&server->smb2slowcmd[i], 0);
565 server->time_per_cmd[i] = 0;
566 server->slowest_cmd[i] = 0;
567 server->fastest_cmd[0] = 0;
569 #endif /* CONFIG_CIFS_STATS2 */
570 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
571 if (cifs_ses_exiting(ses))
573 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
574 atomic_set(&tcon->num_smbs_sent, 0);
575 spin_lock(&tcon->stat_lock);
576 tcon->bytes_read = 0;
577 tcon->bytes_written = 0;
578 spin_unlock(&tcon->stat_lock);
579 if (server->ops->clear_stats)
580 server->ops->clear_stats(tcon);
584 spin_unlock(&cifs_tcp_ses_lock);
592 static int cifs_stats_proc_show(struct seq_file *m, void *v)
595 #ifdef CONFIG_CIFS_STATS2
598 struct TCP_Server_Info *server;
599 struct cifs_ses *ses;
600 struct cifs_tcon *tcon;
602 seq_printf(m, "Resources in use\nCIFS Session: %d\n",
603 sesInfoAllocCount.counter);
604 seq_printf(m, "Share (unique mount targets): %d\n",
605 tconInfoAllocCount.counter);
606 seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
607 buf_alloc_count.counter,
608 cifs_min_rcv + tcpSesAllocCount.counter);
609 seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
610 small_buf_alloc_count.counter, cifs_min_small);
611 #ifdef CONFIG_CIFS_STATS2
612 seq_printf(m, "Total Large %d Small %d Allocations\n",
613 atomic_read(&total_buf_alloc_count),
614 atomic_read(&total_small_buf_alloc_count));
615 #endif /* CONFIG_CIFS_STATS2 */
617 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&mid_count));
619 "\n%d session %d share reconnects\n",
620 tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
623 "Total vfs operations: %d maximum at one time: %d\n",
624 GlobalCurrentXid, GlobalMaxActiveXid);
627 spin_lock(&cifs_tcp_ses_lock);
628 list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
629 seq_printf(m, "\nMax requests in flight: %d", server->max_in_flight);
630 #ifdef CONFIG_CIFS_STATS2
631 seq_puts(m, "\nTotal time spent processing by command. Time ");
632 seq_printf(m, "units are jiffies (%d per second)\n", HZ);
633 seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
634 seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
635 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
636 seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
637 atomic_read(&server->num_cmds[j]),
638 server->time_per_cmd[j],
639 server->fastest_cmd[j],
640 server->slowest_cmd[j]);
641 for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
642 if (atomic_read(&server->smb2slowcmd[j])) {
643 spin_lock(&server->srv_lock);
644 seq_printf(m, " %d slow responses from %s for command %d\n",
645 atomic_read(&server->smb2slowcmd[j]),
646 server->hostname, j);
647 spin_unlock(&server->srv_lock);
650 list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
651 if (cifs_ses_exiting(ses))
653 list_for_each_entry(tcon, &ses->tcon_list, tcon_list) {
655 seq_printf(m, "\n%d) %s", i, tcon->tree_name);
656 if (tcon->need_reconnect)
657 seq_puts(m, "\tDISCONNECTED ");
658 seq_printf(m, "\nSMBs: %d",
659 atomic_read(&tcon->num_smbs_sent));
660 if (server->ops->print_stats)
661 server->ops->print_stats(m, tcon);
665 spin_unlock(&cifs_tcp_ses_lock);
671 static int cifs_stats_proc_open(struct inode *inode, struct file *file)
673 return single_open(file, cifs_stats_proc_show, NULL);
676 static const struct proc_ops cifs_stats_proc_ops = {
677 .proc_open = cifs_stats_proc_open,
678 .proc_read = seq_read,
679 .proc_lseek = seq_lseek,
680 .proc_release = single_release,
681 .proc_write = cifs_stats_proc_write,
684 #ifdef CONFIG_CIFS_SMB_DIRECT
685 #define PROC_FILE_DEFINE(name) \
686 static ssize_t name##_write(struct file *file, const char __user *buffer, \
687 size_t count, loff_t *ppos) \
690 rc = kstrtoint_from_user(buffer, count, 10, & name); \
695 static int name##_proc_show(struct seq_file *m, void *v) \
697 seq_printf(m, "%d\n", name ); \
700 static int name##_open(struct inode *inode, struct file *file) \
702 return single_open(file, name##_proc_show, NULL); \
705 static const struct proc_ops cifs_##name##_proc_fops = { \
706 .proc_open = name##_open, \
707 .proc_read = seq_read, \
708 .proc_lseek = seq_lseek, \
709 .proc_release = single_release, \
710 .proc_write = name##_write, \
713 PROC_FILE_DEFINE(rdma_readwrite_threshold);
714 PROC_FILE_DEFINE(smbd_max_frmr_depth);
715 PROC_FILE_DEFINE(smbd_keep_alive_interval);
716 PROC_FILE_DEFINE(smbd_max_receive_size);
717 PROC_FILE_DEFINE(smbd_max_fragmented_recv_size);
718 PROC_FILE_DEFINE(smbd_max_send_size);
719 PROC_FILE_DEFINE(smbd_send_credit_target);
720 PROC_FILE_DEFINE(smbd_receive_credit_max);
723 static struct proc_dir_entry *proc_fs_cifs;
724 static const struct proc_ops cifsFYI_proc_ops;
725 static const struct proc_ops cifs_lookup_cache_proc_ops;
726 static const struct proc_ops traceSMB_proc_ops;
727 static const struct proc_ops cifs_security_flags_proc_ops;
728 static const struct proc_ops cifs_linux_ext_proc_ops;
729 static const struct proc_ops cifs_mount_params_proc_ops;
734 proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
735 if (proc_fs_cifs == NULL)
738 proc_create_single("DebugData", 0, proc_fs_cifs,
739 cifs_debug_data_proc_show);
741 proc_create_single("open_files", 0400, proc_fs_cifs,
742 cifs_debug_files_proc_show);
744 proc_create("Stats", 0644, proc_fs_cifs, &cifs_stats_proc_ops);
745 proc_create("cifsFYI", 0644, proc_fs_cifs, &cifsFYI_proc_ops);
746 proc_create("traceSMB", 0644, proc_fs_cifs, &traceSMB_proc_ops);
747 proc_create("LinuxExtensionsEnabled", 0644, proc_fs_cifs,
748 &cifs_linux_ext_proc_ops);
749 proc_create("SecurityFlags", 0644, proc_fs_cifs,
750 &cifs_security_flags_proc_ops);
751 proc_create("LookupCacheEnabled", 0644, proc_fs_cifs,
752 &cifs_lookup_cache_proc_ops);
754 proc_create("mount_params", 0444, proc_fs_cifs, &cifs_mount_params_proc_ops);
756 #ifdef CONFIG_CIFS_DFS_UPCALL
757 proc_create("dfscache", 0644, proc_fs_cifs, &dfscache_proc_ops);
760 #ifdef CONFIG_CIFS_SMB_DIRECT
761 proc_create("rdma_readwrite_threshold", 0644, proc_fs_cifs,
762 &cifs_rdma_readwrite_threshold_proc_fops);
763 proc_create("smbd_max_frmr_depth", 0644, proc_fs_cifs,
764 &cifs_smbd_max_frmr_depth_proc_fops);
765 proc_create("smbd_keep_alive_interval", 0644, proc_fs_cifs,
766 &cifs_smbd_keep_alive_interval_proc_fops);
767 proc_create("smbd_max_receive_size", 0644, proc_fs_cifs,
768 &cifs_smbd_max_receive_size_proc_fops);
769 proc_create("smbd_max_fragmented_recv_size", 0644, proc_fs_cifs,
770 &cifs_smbd_max_fragmented_recv_size_proc_fops);
771 proc_create("smbd_max_send_size", 0644, proc_fs_cifs,
772 &cifs_smbd_max_send_size_proc_fops);
773 proc_create("smbd_send_credit_target", 0644, proc_fs_cifs,
774 &cifs_smbd_send_credit_target_proc_fops);
775 proc_create("smbd_receive_credit_max", 0644, proc_fs_cifs,
776 &cifs_smbd_receive_credit_max_proc_fops);
781 cifs_proc_clean(void)
783 if (proc_fs_cifs == NULL)
786 remove_proc_entry("DebugData", proc_fs_cifs);
787 remove_proc_entry("open_files", proc_fs_cifs);
788 remove_proc_entry("cifsFYI", proc_fs_cifs);
789 remove_proc_entry("traceSMB", proc_fs_cifs);
790 remove_proc_entry("Stats", proc_fs_cifs);
791 remove_proc_entry("SecurityFlags", proc_fs_cifs);
792 remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
793 remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
794 remove_proc_entry("mount_params", proc_fs_cifs);
796 #ifdef CONFIG_CIFS_DFS_UPCALL
797 remove_proc_entry("dfscache", proc_fs_cifs);
799 #ifdef CONFIG_CIFS_SMB_DIRECT
800 remove_proc_entry("rdma_readwrite_threshold", proc_fs_cifs);
801 remove_proc_entry("smbd_max_frmr_depth", proc_fs_cifs);
802 remove_proc_entry("smbd_keep_alive_interval", proc_fs_cifs);
803 remove_proc_entry("smbd_max_receive_size", proc_fs_cifs);
804 remove_proc_entry("smbd_max_fragmented_recv_size", proc_fs_cifs);
805 remove_proc_entry("smbd_max_send_size", proc_fs_cifs);
806 remove_proc_entry("smbd_send_credit_target", proc_fs_cifs);
807 remove_proc_entry("smbd_receive_credit_max", proc_fs_cifs);
809 remove_proc_entry("fs/cifs", NULL);
812 static int cifsFYI_proc_show(struct seq_file *m, void *v)
814 seq_printf(m, "%d\n", cifsFYI);
818 static int cifsFYI_proc_open(struct inode *inode, struct file *file)
820 return single_open(file, cifsFYI_proc_show, NULL);
823 static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
824 size_t count, loff_t *ppos)
826 char c[2] = { '\0' };
830 rc = get_user(c[0], buffer);
833 if (strtobool(c, &bv) == 0)
835 else if ((c[0] > '1') && (c[0] <= '9'))
836 cifsFYI = (int) (c[0] - '0'); /* see cifs_debug.h for meanings */
843 static const struct proc_ops cifsFYI_proc_ops = {
844 .proc_open = cifsFYI_proc_open,
845 .proc_read = seq_read,
846 .proc_lseek = seq_lseek,
847 .proc_release = single_release,
848 .proc_write = cifsFYI_proc_write,
851 static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
853 seq_printf(m, "%d\n", linuxExtEnabled);
857 static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
859 return single_open(file, cifs_linux_ext_proc_show, NULL);
862 static ssize_t cifs_linux_ext_proc_write(struct file *file,
863 const char __user *buffer, size_t count, loff_t *ppos)
867 rc = kstrtobool_from_user(buffer, count, &linuxExtEnabled);
874 static const struct proc_ops cifs_linux_ext_proc_ops = {
875 .proc_open = cifs_linux_ext_proc_open,
876 .proc_read = seq_read,
877 .proc_lseek = seq_lseek,
878 .proc_release = single_release,
879 .proc_write = cifs_linux_ext_proc_write,
882 static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
884 seq_printf(m, "%d\n", lookupCacheEnabled);
888 static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
890 return single_open(file, cifs_lookup_cache_proc_show, NULL);
893 static ssize_t cifs_lookup_cache_proc_write(struct file *file,
894 const char __user *buffer, size_t count, loff_t *ppos)
898 rc = kstrtobool_from_user(buffer, count, &lookupCacheEnabled);
905 static const struct proc_ops cifs_lookup_cache_proc_ops = {
906 .proc_open = cifs_lookup_cache_proc_open,
907 .proc_read = seq_read,
908 .proc_lseek = seq_lseek,
909 .proc_release = single_release,
910 .proc_write = cifs_lookup_cache_proc_write,
913 static int traceSMB_proc_show(struct seq_file *m, void *v)
915 seq_printf(m, "%d\n", traceSMB);
919 static int traceSMB_proc_open(struct inode *inode, struct file *file)
921 return single_open(file, traceSMB_proc_show, NULL);
924 static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
925 size_t count, loff_t *ppos)
929 rc = kstrtobool_from_user(buffer, count, &traceSMB);
936 static const struct proc_ops traceSMB_proc_ops = {
937 .proc_open = traceSMB_proc_open,
938 .proc_read = seq_read,
939 .proc_lseek = seq_lseek,
940 .proc_release = single_release,
941 .proc_write = traceSMB_proc_write,
944 static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
946 seq_printf(m, "0x%x\n", global_secflags);
950 static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
952 return single_open(file, cifs_security_flags_proc_show, NULL);
956 * Ensure that if someone sets a MUST flag, that we disable all other MAY
957 * flags except for the ones corresponding to the given MUST flag. If there are
958 * multiple MUST flags, then try to prefer more secure ones.
961 cifs_security_flags_handle_must_flags(unsigned int *flags)
963 unsigned int signflags = *flags & CIFSSEC_MUST_SIGN;
965 if ((*flags & CIFSSEC_MUST_KRB5) == CIFSSEC_MUST_KRB5)
966 *flags = CIFSSEC_MUST_KRB5;
967 else if ((*flags & CIFSSEC_MUST_NTLMSSP) == CIFSSEC_MUST_NTLMSSP)
968 *flags = CIFSSEC_MUST_NTLMSSP;
969 else if ((*flags & CIFSSEC_MUST_NTLMV2) == CIFSSEC_MUST_NTLMV2)
970 *flags = CIFSSEC_MUST_NTLMV2;
975 static ssize_t cifs_security_flags_proc_write(struct file *file,
976 const char __user *buffer, size_t count, loff_t *ppos)
980 char flags_string[12];
983 if ((count < 1) || (count > 11))
986 memset(flags_string, 0, 12);
988 if (copy_from_user(flags_string, buffer, count))
992 /* single char or single char followed by null */
993 if (strtobool(flags_string, &bv) == 0) {
994 global_secflags = bv ? CIFSSEC_MAX : CIFSSEC_DEF;
996 } else if (!isdigit(flags_string[0])) {
997 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1003 /* else we have a number */
1004 rc = kstrtouint(flags_string, 0, &flags);
1006 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n",
1011 cifs_dbg(FYI, "sec flags 0x%x\n", flags);
1014 cifs_dbg(VFS, "Invalid SecurityFlags: %s\n", flags_string);
1018 if (flags & ~CIFSSEC_MASK) {
1019 cifs_dbg(VFS, "Unsupported security flags: 0x%x\n",
1020 flags & ~CIFSSEC_MASK);
1024 cifs_security_flags_handle_must_flags(&flags);
1026 /* flags look ok - update the global security flags for cifs module */
1027 global_secflags = flags;
1028 if (global_secflags & CIFSSEC_MUST_SIGN) {
1029 /* requiring signing implies signing is allowed */
1030 global_secflags |= CIFSSEC_MAY_SIGN;
1031 cifs_dbg(FYI, "packet signing now required\n");
1032 } else if ((global_secflags & CIFSSEC_MAY_SIGN) == 0) {
1033 cifs_dbg(FYI, "packet signing disabled\n");
1035 /* BB should we turn on MAY flags for other MUST options? */
1039 static const struct proc_ops cifs_security_flags_proc_ops = {
1040 .proc_open = cifs_security_flags_proc_open,
1041 .proc_read = seq_read,
1042 .proc_lseek = seq_lseek,
1043 .proc_release = single_release,
1044 .proc_write = cifs_security_flags_proc_write,
1047 /* To make it easier to debug, can help to show mount params */
1048 static int cifs_mount_params_proc_show(struct seq_file *m, void *v)
1050 const struct fs_parameter_spec *p;
1053 for (p = smb3_fs_parameters; p->name; p++) {
1054 /* cannot use switch with pointers... */
1056 if (p->flags == fs_param_neg_with_no)
1060 } else if (p->type == fs_param_is_bool)
1062 else if (p->type == fs_param_is_u32)
1064 else if (p->type == fs_param_is_u64)
1066 else if (p->type == fs_param_is_string)
1071 seq_printf(m, "%s:%s\n", p->name, type);
1077 static int cifs_mount_params_proc_open(struct inode *inode, struct file *file)
1079 return single_open(file, cifs_mount_params_proc_show, NULL);
1082 static const struct proc_ops cifs_mount_params_proc_ops = {
1083 .proc_open = cifs_mount_params_proc_open,
1084 .proc_read = seq_read,
1085 .proc_lseek = seq_lseek,
1086 .proc_release = single_release,
1087 /* No need for write for now */
1088 /* .proc_write = cifs_mount_params_proc_write, */
1092 inline void cifs_proc_init(void)
1096 inline void cifs_proc_clean(void)
1099 #endif /* PROC_FS */