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 if (sdata->dev->reg_state == NETREG_REGISTERED)
37 ret = (*format)(sdata, buf, sizeof(buf));
38 read_unlock(&dev_base_lock);
41 ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
46 static ssize_t ieee80211_if_write(
47 struct ieee80211_sub_if_data *sdata,
48 const char __user *userbuf,
49 size_t count, loff_t *ppos,
50 ssize_t (*write)(struct ieee80211_sub_if_data *, const char *, int))
55 buf = kmalloc(count, GFP_KERNEL);
60 if (copy_from_user(buf, userbuf, count))
65 if (sdata->dev->reg_state == NETREG_REGISTERED)
66 ret = (*write)(sdata, buf, count);
74 #define IEEE80211_IF_FMT(name, field, format_string) \
75 static ssize_t ieee80211_if_fmt_##name( \
76 const struct ieee80211_sub_if_data *sdata, char *buf, \
79 return scnprintf(buf, buflen, format_string, sdata->field); \
81 #define IEEE80211_IF_FMT_DEC(name, field) \
82 IEEE80211_IF_FMT(name, field, "%d\n")
83 #define IEEE80211_IF_FMT_HEX(name, field) \
84 IEEE80211_IF_FMT(name, field, "%#x\n")
85 #define IEEE80211_IF_FMT_LHEX(name, field) \
86 IEEE80211_IF_FMT(name, field, "%#lx\n")
87 #define IEEE80211_IF_FMT_SIZE(name, field) \
88 IEEE80211_IF_FMT(name, field, "%zd\n")
90 #define IEEE80211_IF_FMT_ATOMIC(name, field) \
91 static ssize_t ieee80211_if_fmt_##name( \
92 const struct ieee80211_sub_if_data *sdata, \
93 char *buf, int buflen) \
95 return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
98 #define IEEE80211_IF_FMT_MAC(name, field) \
99 static ssize_t ieee80211_if_fmt_##name( \
100 const struct ieee80211_sub_if_data *sdata, char *buf, \
103 return scnprintf(buf, buflen, "%pM\n", sdata->field); \
106 #define IEEE80211_IF_FMT_DEC_DIV_16(name, field) \
107 static ssize_t ieee80211_if_fmt_##name( \
108 const struct ieee80211_sub_if_data *sdata, \
109 char *buf, int buflen) \
111 return scnprintf(buf, buflen, "%d\n", sdata->field / 16); \
114 #define __IEEE80211_IF_FILE(name, _write) \
115 static ssize_t ieee80211_if_read_##name(struct file *file, \
116 char __user *userbuf, \
117 size_t count, loff_t *ppos) \
119 return ieee80211_if_read(file->private_data, \
120 userbuf, count, ppos, \
121 ieee80211_if_fmt_##name); \
123 static const struct file_operations name##_ops = { \
124 .read = ieee80211_if_read_##name, \
126 .open = mac80211_open_file_generic, \
127 .llseek = generic_file_llseek, \
130 #define __IEEE80211_IF_FILE_W(name) \
131 static ssize_t ieee80211_if_write_##name(struct file *file, \
132 const char __user *userbuf, \
133 size_t count, loff_t *ppos) \
135 return ieee80211_if_write(file->private_data, userbuf, count, \
136 ppos, ieee80211_if_parse_##name); \
138 __IEEE80211_IF_FILE(name, ieee80211_if_write_##name)
141 #define IEEE80211_IF_FILE(name, field, format) \
142 IEEE80211_IF_FMT_##format(name, field) \
143 __IEEE80211_IF_FILE(name, NULL)
145 /* common attributes */
146 IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
147 IEEE80211_IF_FILE(rc_rateidx_mask_2ghz, rc_rateidx_mask[IEEE80211_BAND_2GHZ],
149 IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
151 IEEE80211_IF_FILE(flags, flags, HEX);
152 IEEE80211_IF_FILE(state, state, LHEX);
153 IEEE80211_IF_FILE(channel_type, vif.bss_conf.channel_type, DEC);
156 IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
157 IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
158 IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
159 IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
161 static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
162 enum ieee80211_smps_mode smps_mode)
164 struct ieee80211_local *local = sdata->local;
167 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_STATIC_SMPS) &&
168 smps_mode == IEEE80211_SMPS_STATIC)
171 /* auto should be dynamic if in PS mode */
172 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) &&
173 (smps_mode == IEEE80211_SMPS_DYNAMIC ||
174 smps_mode == IEEE80211_SMPS_AUTOMATIC))
177 /* supported only on managed interfaces for now */
178 if (sdata->vif.type != NL80211_IFTYPE_STATION)
181 mutex_lock(&sdata->u.mgd.mtx);
182 err = __ieee80211_request_smps(sdata, smps_mode);
183 mutex_unlock(&sdata->u.mgd.mtx);
188 static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
189 [IEEE80211_SMPS_AUTOMATIC] = "auto",
190 [IEEE80211_SMPS_OFF] = "off",
191 [IEEE80211_SMPS_STATIC] = "static",
192 [IEEE80211_SMPS_DYNAMIC] = "dynamic",
195 static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata,
196 char *buf, int buflen)
198 if (sdata->vif.type != NL80211_IFTYPE_STATION)
201 return snprintf(buf, buflen, "request: %s\nused: %s\n",
202 smps_modes[sdata->u.mgd.req_smps],
203 smps_modes[sdata->u.mgd.ap_smps]);
206 static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata,
207 const char *buf, int buflen)
209 enum ieee80211_smps_mode mode;
211 for (mode = 0; mode < IEEE80211_SMPS_NUM_MODES; mode++) {
212 if (strncmp(buf, smps_modes[mode], buflen) == 0) {
213 int err = ieee80211_set_smps(sdata, mode);
223 __IEEE80211_IF_FILE_W(smps);
225 static ssize_t ieee80211_if_fmt_tkip_mic_test(
226 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
231 static int hwaddr_aton(const char *txt, u8 *addr)
235 for (i = 0; i < ETH_ALEN; i++) {
238 a = hex_to_bin(*txt++);
241 b = hex_to_bin(*txt++);
244 *addr++ = (a << 4) | b;
245 if (i < 5 && *txt++ != ':')
252 static ssize_t ieee80211_if_parse_tkip_mic_test(
253 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
255 struct ieee80211_local *local = sdata->local;
258 struct ieee80211_hdr *hdr;
262 * Assume colon-delimited MAC address with possible white space
265 if (buflen < 3 * ETH_ALEN - 1)
267 if (hwaddr_aton(buf, addr) < 0)
270 if (!ieee80211_sdata_running(sdata))
273 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 24 + 100);
276 skb_reserve(skb, local->hw.extra_tx_headroom);
278 hdr = (struct ieee80211_hdr *) skb_put(skb, 24);
280 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA);
282 switch (sdata->vif.type) {
283 case NL80211_IFTYPE_AP:
284 fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
286 memcpy(hdr->addr1, addr, ETH_ALEN);
287 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
288 memcpy(hdr->addr3, sdata->vif.addr, ETH_ALEN);
290 case NL80211_IFTYPE_STATION:
291 fc |= cpu_to_le16(IEEE80211_FCTL_TODS);
293 if (sdata->vif.bss_conf.bssid == NULL) {
297 memcpy(hdr->addr1, sdata->vif.bss_conf.bssid, ETH_ALEN);
298 memcpy(hdr->addr2, sdata->vif.addr, ETH_ALEN);
299 memcpy(hdr->addr3, addr, ETH_ALEN);
305 hdr->frame_control = fc;
308 * Add some length to the test frame to make it look bit more valid.
309 * The exact contents does not matter since the recipient is required
310 * to drop this because of the Michael MIC failure.
312 memset(skb_put(skb, 50), 0, 50);
314 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_TKIP_MIC_FAILURE;
316 ieee80211_tx_skb(sdata, skb);
321 __IEEE80211_IF_FILE_W(tkip_mic_test);
324 IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
325 IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
327 static ssize_t ieee80211_if_fmt_num_buffered_multicast(
328 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
330 return scnprintf(buf, buflen, "%u\n",
331 skb_queue_len(&sdata->u.ap.ps_bc_buf));
333 __IEEE80211_IF_FILE(num_buffered_multicast, NULL);
335 /* IBSS attributes */
336 static ssize_t ieee80211_if_fmt_tsf(
337 const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
339 struct ieee80211_local *local = sdata->local;
342 tsf = drv_get_tsf(local, (struct ieee80211_sub_if_data *)sdata);
344 return scnprintf(buf, buflen, "0x%016llx\n", (unsigned long long) tsf);
347 static ssize_t ieee80211_if_parse_tsf(
348 struct ieee80211_sub_if_data *sdata, const char *buf, int buflen)
350 struct ieee80211_local *local = sdata->local;
351 unsigned long long tsf;
354 if (strncmp(buf, "reset", 5) == 0) {
355 if (local->ops->reset_tsf) {
356 drv_reset_tsf(local, sdata);
357 wiphy_info(local->hw.wiphy, "debugfs reset TSF\n");
360 ret = kstrtoull(buf, 10, &tsf);
363 if (local->ops->set_tsf) {
364 drv_set_tsf(local, sdata, tsf);
365 wiphy_info(local->hw.wiphy,
366 "debugfs set TSF to %#018llx\n", tsf);
372 __IEEE80211_IF_FILE_W(tsf);
376 IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
378 #ifdef CONFIG_MAC80211_MESH
379 /* Mesh stats attributes */
380 IEEE80211_IF_FILE(fwded_mcast, u.mesh.mshstats.fwded_mcast, DEC);
381 IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
382 IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
383 IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
384 IEEE80211_IF_FILE(dropped_frames_congestion,
385 u.mesh.mshstats.dropped_frames_congestion, DEC);
386 IEEE80211_IF_FILE(dropped_frames_no_route,
387 u.mesh.mshstats.dropped_frames_no_route, DEC);
388 IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
390 /* Mesh parameters */
391 IEEE80211_IF_FILE(dot11MeshMaxRetries,
392 u.mesh.mshcfg.dot11MeshMaxRetries, DEC);
393 IEEE80211_IF_FILE(dot11MeshRetryTimeout,
394 u.mesh.mshcfg.dot11MeshRetryTimeout, DEC);
395 IEEE80211_IF_FILE(dot11MeshConfirmTimeout,
396 u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC);
397 IEEE80211_IF_FILE(dot11MeshHoldingTimeout,
398 u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC);
399 IEEE80211_IF_FILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC);
400 IEEE80211_IF_FILE(element_ttl, u.mesh.mshcfg.element_ttl, DEC);
401 IEEE80211_IF_FILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC);
402 IEEE80211_IF_FILE(dot11MeshMaxPeerLinks,
403 u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC);
404 IEEE80211_IF_FILE(dot11MeshHWMPactivePathTimeout,
405 u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC);
406 IEEE80211_IF_FILE(dot11MeshHWMPpreqMinInterval,
407 u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC);
408 IEEE80211_IF_FILE(dot11MeshHWMPperrMinInterval,
409 u.mesh.mshcfg.dot11MeshHWMPperrMinInterval, DEC);
410 IEEE80211_IF_FILE(dot11MeshHWMPnetDiameterTraversalTime,
411 u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC);
412 IEEE80211_IF_FILE(dot11MeshHWMPmaxPREQretries,
413 u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC);
414 IEEE80211_IF_FILE(path_refresh_time,
415 u.mesh.mshcfg.path_refresh_time, DEC);
416 IEEE80211_IF_FILE(min_discovery_timeout,
417 u.mesh.mshcfg.min_discovery_timeout, DEC);
418 IEEE80211_IF_FILE(dot11MeshHWMPRootMode,
419 u.mesh.mshcfg.dot11MeshHWMPRootMode, DEC);
420 IEEE80211_IF_FILE(dot11MeshGateAnnouncementProtocol,
421 u.mesh.mshcfg.dot11MeshGateAnnouncementProtocol, DEC);
422 IEEE80211_IF_FILE(dot11MeshHWMPRannInterval,
423 u.mesh.mshcfg.dot11MeshHWMPRannInterval, DEC);
427 #define DEBUGFS_ADD(name) \
428 debugfs_create_file(#name, 0400, sdata->debugfs.dir, \
431 #define DEBUGFS_ADD_MODE(name, mode) \
432 debugfs_create_file(#name, mode, sdata->debugfs.dir, \
435 static void add_sta_files(struct ieee80211_sub_if_data *sdata)
437 DEBUGFS_ADD(drop_unencrypted);
440 DEBUGFS_ADD(channel_type);
441 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
442 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
446 DEBUGFS_ADD(last_beacon);
447 DEBUGFS_ADD(ave_beacon);
448 DEBUGFS_ADD_MODE(smps, 0600);
449 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
452 static void add_ap_files(struct ieee80211_sub_if_data *sdata)
454 DEBUGFS_ADD(drop_unencrypted);
457 DEBUGFS_ADD(channel_type);
458 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
459 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
461 DEBUGFS_ADD(num_sta_ps);
462 DEBUGFS_ADD(dtim_count);
463 DEBUGFS_ADD(num_buffered_multicast);
464 DEBUGFS_ADD_MODE(tkip_mic_test, 0200);
467 static void add_ibss_files(struct ieee80211_sub_if_data *sdata)
469 DEBUGFS_ADD_MODE(tsf, 0600);
472 static void add_wds_files(struct ieee80211_sub_if_data *sdata)
474 DEBUGFS_ADD(drop_unencrypted);
477 DEBUGFS_ADD(channel_type);
478 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
479 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
484 static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
486 DEBUGFS_ADD(drop_unencrypted);
489 DEBUGFS_ADD(channel_type);
490 DEBUGFS_ADD(rc_rateidx_mask_2ghz);
491 DEBUGFS_ADD(rc_rateidx_mask_5ghz);
494 static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
498 DEBUGFS_ADD(channel_type);
501 #ifdef CONFIG_MAC80211_MESH
503 static void add_mesh_stats(struct ieee80211_sub_if_data *sdata)
505 struct dentry *dir = debugfs_create_dir("mesh_stats",
508 #define MESHSTATS_ADD(name)\
509 debugfs_create_file(#name, 0400, dir, sdata, &name##_ops);
511 MESHSTATS_ADD(fwded_mcast);
512 MESHSTATS_ADD(fwded_unicast);
513 MESHSTATS_ADD(fwded_frames);
514 MESHSTATS_ADD(dropped_frames_ttl);
515 MESHSTATS_ADD(dropped_frames_no_route);
516 MESHSTATS_ADD(dropped_frames_congestion);
517 MESHSTATS_ADD(estab_plinks);
521 static void add_mesh_config(struct ieee80211_sub_if_data *sdata)
523 struct dentry *dir = debugfs_create_dir("mesh_config",
526 #define MESHPARAMS_ADD(name) \
527 debugfs_create_file(#name, 0600, dir, sdata, &name##_ops);
529 MESHPARAMS_ADD(dot11MeshMaxRetries);
530 MESHPARAMS_ADD(dot11MeshRetryTimeout);
531 MESHPARAMS_ADD(dot11MeshConfirmTimeout);
532 MESHPARAMS_ADD(dot11MeshHoldingTimeout);
533 MESHPARAMS_ADD(dot11MeshTTL);
534 MESHPARAMS_ADD(element_ttl);
535 MESHPARAMS_ADD(auto_open_plinks);
536 MESHPARAMS_ADD(dot11MeshMaxPeerLinks);
537 MESHPARAMS_ADD(dot11MeshHWMPactivePathTimeout);
538 MESHPARAMS_ADD(dot11MeshHWMPpreqMinInterval);
539 MESHPARAMS_ADD(dot11MeshHWMPperrMinInterval);
540 MESHPARAMS_ADD(dot11MeshHWMPnetDiameterTraversalTime);
541 MESHPARAMS_ADD(dot11MeshHWMPmaxPREQretries);
542 MESHPARAMS_ADD(path_refresh_time);
543 MESHPARAMS_ADD(min_discovery_timeout);
544 MESHPARAMS_ADD(dot11MeshHWMPRootMode);
545 MESHPARAMS_ADD(dot11MeshHWMPRannInterval);
546 MESHPARAMS_ADD(dot11MeshGateAnnouncementProtocol);
547 #undef MESHPARAMS_ADD
551 static void add_files(struct ieee80211_sub_if_data *sdata)
553 if (!sdata->debugfs.dir)
556 switch (sdata->vif.type) {
557 case NL80211_IFTYPE_MESH_POINT:
558 #ifdef CONFIG_MAC80211_MESH
559 add_mesh_stats(sdata);
560 add_mesh_config(sdata);
563 case NL80211_IFTYPE_STATION:
564 add_sta_files(sdata);
566 case NL80211_IFTYPE_ADHOC:
567 add_ibss_files(sdata);
569 case NL80211_IFTYPE_AP:
572 case NL80211_IFTYPE_WDS:
573 add_wds_files(sdata);
575 case NL80211_IFTYPE_MONITOR:
576 add_monitor_files(sdata);
578 case NL80211_IFTYPE_AP_VLAN:
579 add_vlan_files(sdata);
586 void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
588 char buf[10+IFNAMSIZ];
590 sprintf(buf, "netdev:%s", sdata->name);
591 sdata->debugfs.dir = debugfs_create_dir(buf,
592 sdata->local->hw.wiphy->debugfsdir);
593 if (sdata->debugfs.dir)
594 sdata->debugfs.subdir_stations = debugfs_create_dir("stations",
599 void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
601 if (!sdata->debugfs.dir)
604 debugfs_remove_recursive(sdata->debugfs.dir);
605 sdata->debugfs.dir = NULL;
608 void ieee80211_debugfs_rename_netdev(struct ieee80211_sub_if_data *sdata)
611 char buf[10 + IFNAMSIZ];
613 dir = sdata->debugfs.dir;
618 sprintf(buf, "netdev:%s", sdata->name);
619 if (!debugfs_rename(dir->d_parent, dir, dir->d_parent, buf))
620 printk(KERN_ERR "mac80211: debugfs: failed to rename debugfs "