2 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
3 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
10 #include <linux/kernel.h>
11 #include <linux/device.h>
13 #include <linux/interrupt.h>
14 #include <linux/netdevice.h>
15 #include <linux/rtnetlink.h>
16 #include <linux/slab.h>
17 #include <linux/notifier.h>
18 #include <net/mac80211.h>
19 #include <net/cfg80211.h>
20 #include "ieee80211_i.h"
23 #include "debugfs_netdev.h"
24 #include "driver-ops.h"
26 static ssize_t ieee80211_if_read(
27 struct ieee80211_sub_if_data *sdata,
29 size_t count, loff_t *ppos,
30 ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
33 ssize_t ret = -EINVAL;
35 read_lock(&dev_base_lock);
36 ret = (*format)(sdata, buf, sizeof(buf));
37 read_unlock(&dev_base_lock);
40 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
45 static ssize_t ieee80211_if_write(
46 struct ieee80211_sub_if_data *sdata,
47 const char __user *userbuf,
48 size_t count, loff_t *ppos,
49 ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
54 buf = kmalloc(count, GFP_KERNEL);
59 if (copy_from_user(buf, userbuf, count))
64 ret = (*write)(sdata, buf, count);
72 #define IEEE80211_IF_FMT(name, field, format_string) \
73 static ssize_t ieee80211_if_fmt_##name( \
74 const struct ieee80211_sub_if_data *sdata, char *buf, \
77 return scnprintf(buf, buflen, format_string, sdata->field); \
79 #define IEEE80211_IF_FMT_DEC(name, field) \
80 IEEE80211_IF_FMT(name, field, "%d\n")
81 #define IEEE80211_IF_FMT_HEX(name, field) \
82 IEEE80211_IF_FMT(name, field, "%#x\n")
83 #define IEEE80211_IF_FMT_LHEX(name, field) \
84 IEEE80211_IF_FMT(name, field, "%#lx\n")
85 #define IEEE80211_IF_FMT_SIZE(name, field) \
86 IEEE80211_IF_FMT(name, field, "%zd\n")
88 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
89 static ssize_t ieee80211_if_fmt_##name( \
90 const struct ieee80211_sub_if_data *sdata, \
91 char *buf, int buflen) \
93 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
96 #define IEEE80211_IF_FMT_MAC(name, field) \
97 static ssize_t ieee80211_if_fmt_##name( \
98 const struct ieee80211_sub_if_data *sdata, char *buf, \
101 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
104 #define IEEE80211_IF_FMT_DEC_DIV_16(name, field) \
105 static ssize_t ieee80211_if_fmt_##name( \
106 const struct ieee80211_sub_if_data *sdata, \
107 char *buf, int buflen) \
109 return scnprintf(buf, buflen, "%d\n", sdata->field / 16); \
112 #define __IEEE80211_IF_FILE(name, _write) \
113 static ssize_t ieee80211_if_read_##name(struct file *file, \
114 char __user *userbuf, \
115 size_t count, loff_t *ppos) \
117 return ieee80211_if_read(file->private_data, \
118 userbuf, count, ppos, \
119 ieee80211_if_fmt_##name); \
121 static const struct file_operations name##_ops = { \
122 .read = ieee80211_if_read_##name, \
124 .open = mac80211_open_file_generic, \
125 .llseek = generic_file_llseek, \
128 #define __IEEE80211_IF_FILE_W(name) \
129 static ssize_t ieee80211_if_write_##name(struct file *file, \
130 const char __user *userbuf, \
131 size_t count, loff_t *ppos) \
133 return ieee80211_if_write(file->private_data, userbuf, count, \
134 ppos, ieee80211_if_parse_##name); \
136 __IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
139 #define IEEE80211_IF_FILE(name, field, format) \
140 IEEE80211_IF_FMT_##format(name, field) \
141 __IEEE80211_IF_FILE(name, NULL)
143 /* common attributes */
144 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
145 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
147 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
149 IEEE80211_IF_FILE(flags, flags, HEX);
150 IEEE80211_IF_FILE(state, state, LHEX);
151 IEEE80211_IF_FILE(channel_type, vif.bss_conf.channel_type, DEC);
154 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
155 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
156 IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
157 IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
159 static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
160 enum ieee80211_smps_mode smps_mode)
162 struct ieee80211_local *local = sdata->local;
165 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
166 smps_mode == IEEE80211_SMPS_STATIC)
169 /* auto should be dynamic if in PS mode */
170 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
171 (smps_mode == IEEE80211_SMPS_DYNAMIC ||
172 smps_mode == IEEE80211_SMPS_AUTOMATIC))
175 /* supported only on managed interfaces for now */
176 if (sdata->vif.type != NL80211_IFTYPE_STATION)
179 mutex_lock(&sdata->u.mgd.mtx);
180 err = __ieee80211_request_smps(sdata, smps_mode);
181 mutex_unlock(&sdata->u.mgd.mtx);
186 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
187 [IEEE80211_SMPS_AUTOMATIC] = "auto",
188 [IEEE80211_SMPS_OFF] = "off",
189 [IEEE80211_SMPS_STATIC] = "static",
190 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
193 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
194 char *buf, int buflen)
196 if (sdata->vif.type != NL80211_IFTYPE_STATION)
199 return snprintf(buf, buflen, "request: %s\nused: %s\n",
200 smps_modes[sdata->u.mgd.req_smps],
201 smps_modes[sdata->u.mgd.ap_smps]);
204 static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
205 const char *buf, int buflen)
207 enum ieee80211_smps_mode mode;
209 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
210 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
211 int err = ieee80211_set_smps(sdata, mode);
221 __IEEE80211_IF_FILE_W(smps);
223 static ssize_t ieee80211_if_fmt_tkip_mic_test(
224 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
229 static int hwaddr_aton(const char *txt, u8 *addr)
233 for (i = 0; i < ETH_ALEN; i++) {
236 a = hex_to_bin(*txt++);
239 b = hex_to_bin(*txt++);
242 *addr++ = (a << 4) | b;
243 if (i < 5 && *txt++ != ':')
250 static ssize_t ieee80211_if_parse_tkip_mic_test(
251 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
253 struct ieee80211_local *local = sdata->local;
256 struct ieee80211_hdr *hdr;
260 * Assume colon-delimited MAC address with possible white space
263 if (buflen < 3 * ETH_ALEN - 1)
265 if (hwaddr_aton(buf, addr) < 0)
268 if (!ieee80211_sdata_running(sdata))
271 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
274 skb_reserve(skb, local->hw.extra_tx_headroom);
276 hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
278 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
280 switch (sdata->vif.type) {
281 case NL80211_IFTYPE_AP:
282 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
284 memcpy(hdr->addr1, addr, ETH_ALEN);
285 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
286 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
288 case NL80211_IFTYPE_STATION:
289 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
291 if (sdata->vif.bss_conf.bssid == NULL) {
295 memcpy(hdr->addr1, sdata->vif.bss_conf.bssid, ETH_ALEN);
296 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
297 memcpy(hdr->addr3, addr, ETH_ALEN);
303 hdr->frame_control = fc;
306 * Add some length to the test frame to make it look bit more valid.
307 * The exact contents does not matter since the recipient is required
308 * to drop this because of the Michael MIC failure.
310 memset(skb_put(skb, 50), 0, 50);
312 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
314 ieee80211_tx_skb(sdata, skb);
319 __IEEE80211_IF_FILE_W(tkip_mic_test);
322 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
323 IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
325 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
326 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
328 return scnprintf(buf, buflen, "%u\n",
329 skb_queue_len(&sdata->u.ap.ps_bc_buf));
331 __IEEE80211_IF_FILE(num_buffered_multicast, NULL);
333 /* IBSS attributes */
334 static ssize_t ieee80211_if_fmt_tsf(
335 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
337 struct ieee80211_local *local = sdata->local;
340 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
342 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
345 static ssize_t ieee80211_if_parse_tsf(
346 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
348 struct ieee80211_local *local = sdata->local;
349 unsigned long long tsf;
352 if (strncmp(buf, "reset", 5) == 0) {
353 if (local->ops->reset_tsf) {
354 drv_reset_tsf(local, sdata);
355 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
358 ret = kstrtoull(buf, 10, &tsf);
361 if (local->ops->set_tsf) {
362 drv_set_tsf(local, sdata, tsf);
363 wiphy_info(local->hw.wiphy,
364 "debugfs set TSF to %#018llx\n", tsf);
370 __IEEE80211_IF_FILE_W(tsf);
374 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
376 #ifdef CONFIG_MAC80211_MESH
377 /* Mesh stats attributes */
378 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
379 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
380 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
381 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
382 IEEE80211_IF_FILE(dropped_frames_congestion,
383 u.mesh.mshstats.dropped_frames_congestion, DEC);
384 IEEE80211_IF_FILE(dropped_frames_no_route,
385 u.mesh.mshstats.dropped_frames_no_route, DEC);
386 IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
388 /* Mesh parameters */
389 IEEE80211_IF_FILE(dot11MeshMaxRetries,
390 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
391 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
392 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
393 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
394 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
395 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
396 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
397 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
398 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
399 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
400 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
401 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
402 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
403 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
404 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
405 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
406 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
407 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
408 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
409 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
410 IEEE80211_IF_FILE(path_refresh_time,
411 u.mesh.mshcfg.path_refresh_time, DEC);
412 IEEE80211_IF_FILE(min_discovery_timeout,
413 u.mesh.mshcfg.min_discovery_timeout, DEC);
414 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
415 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
416 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
417 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
418 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
419 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
423 #define DEBUGFS_ADD(name) \
424 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
427 #define DEBUGFS_ADD_MODE(name, mode) \
428 debugfs_create_file(#name, mode, sdata->debugfs.dir, \
431 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
433 DEBUGFS_ADD(drop_unencrypted);
436 DEBUGFS_ADD(channel_type);
437 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
438 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
442 DEBUGFS_ADD(last_beacon);
443 DEBUGFS_ADD(ave_beacon);
444 DEBUGFS_ADD_MODE(smps, 0600);
445 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
448 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
450 DEBUGFS_ADD(drop_unencrypted);
453 DEBUGFS_ADD(channel_type);
454 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
455 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
457 DEBUGFS_ADD(num_sta_ps);
458 DEBUGFS_ADD(dtim_count);
459 DEBUGFS_ADD(num_buffered_multicast);
460 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
463 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
465 DEBUGFS_ADD_MODE(tsf, 0600);
468 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
470 DEBUGFS_ADD(drop_unencrypted);
473 DEBUGFS_ADD(channel_type);
474 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
475 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
480 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
482 DEBUGFS_ADD(drop_unencrypted);
485 DEBUGFS_ADD(channel_type);
486 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
487 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
490 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
494 DEBUGFS_ADD(channel_type);
497 #ifdef CONFIG_MAC80211_MESH
499 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
501 struct dentry *dir = debugfs_create_dir("mesh_stats",
504 #define MESHSTATS_ADD(name)\
505 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
507 MESHSTATS_ADD(fwded_mcast);
508 MESHSTATS_ADD(fwded_unicast);
509 MESHSTATS_ADD(fwded_frames);
510 MESHSTATS_ADD(dropped_frames_ttl);
511 MESHSTATS_ADD(dropped_frames_no_route);
512 MESHSTATS_ADD(dropped_frames_congestion);
513 MESHSTATS_ADD(estab_plinks);
517 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
519 struct dentry *dir = debugfs_create_dir("mesh_config",
522 #define MESHPARAMS_ADD(name) \
523 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
525 MESHPARAMS_ADD(dot11MeshMaxRetries);
526 MESHPARAMS_ADD(dot11MeshRetryTimeout);
527 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
528 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
529 MESHPARAMS_ADD(dot11MeshTTL);
530 MESHPARAMS_ADD(element_ttl);
531 MESHPARAMS_ADD(auto_open_plinks);
532 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
533 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
534 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
535 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
536 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
537 MESHPARAMS_ADD(path_refresh_time);
538 MESHPARAMS_ADD(min_discovery_timeout);
539 MESHPARAMS_ADD(dot11MeshHWMPRootMode);
540 MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
541 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
542 #undef MESHPARAMS_ADD
546 static void add_files(struct ieee80211_sub_if_data *sdata)
548 if (!sdata->debugfs.dir)
551 switch (sdata->vif.type) {
552 case NL80211_IFTYPE_MESH_POINT:
553 #ifdef CONFIG_MAC80211_MESH
554 add_mesh_stats(sdata);
555 add_mesh_config(sdata);
558 case NL80211_IFTYPE_STATION:
559 add_sta_files(sdata);
561 case NL80211_IFTYPE_ADHOC:
562 add_ibss_files(sdata);
564 case NL80211_IFTYPE_AP:
567 case NL80211_IFTYPE_WDS:
568 add_wds_files(sdata);
570 case NL80211_IFTYPE_MONITOR:
571 add_monitor_files(sdata);
573 case NL80211_IFTYPE_AP_VLAN:
574 add_vlan_files(sdata);
581 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
583 char buf[10+IFNAMSIZ];
585 sprintf(buf, "netdev:%s", sdata->name);
586 sdata->debugfs.dir = debugfs_create_dir(buf,
587 sdata->local->hw.wiphy->debugfsdir);
588 if (sdata->debugfs.dir)
589 sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
594 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
596 if (!sdata->debugfs.dir)
599 debugfs_remove_recursive(sdata->debugfs.dir);
600 sdata->debugfs.dir = NULL;
603 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
606 char buf[10 + IFNAMSIZ];
608 dir = sdata->debugfs.dir;
613 sprintf(buf, "netdev:%s", sdata->name);
614 if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
615 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "