1 /**
2 * collectd - src/madwifi.c
3 * Copyright (C) 2009 Ondrej 'SanTiago' Zajicek
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Author:
19 * Ondrej 'SanTiago' Zajicek <santiago@crfreenet.org>
20 *
21 * based on some code from interfaces.c (collectd) and Madwifi driver
22 **/
25 /**
26 * There are several data streams provided by Madwifi plugin, some are
27 * connected to network interface, some are connected to each node
28 * associated to that interface. Nodes represents other sides in
29 * wireless communication, for example on network interface in AP mode,
30 * there is one node for each associated station. Node data streams
31 * contain MAC address of the node as the last part of the type_instance
32 * field.
33 *
34 * Inteface data streams:
35 * ath_nodes The number of associated nodes
36 * ath_stat Device statistic counters
37 *
38 * Node data streams:
39 * node_octets RX and TX data count (octets/bytes)
40 * node_rssi Received RSSI of the node
41 * node_tx_rate Reported TX rate to that node
42 * node_stat Node statistic counters
43 *
44 * Both statistic counters have type instances for each counter returned
45 * by Madwifi. See madwifi.h for content of ieee80211_nodestats,
46 * ieee80211_stats and ath_stats structures. Type instances use the same
47 * name as fields in these structures (like ns_rx_dup). Some fields are
48 * not reported, because they are not counters (like ns_tx_deauth_code
49 * or ast_tx_rssi). Fields ns_rx_bytes and ns_tx_bytes are reported as
50 * node_octets data stream instead of type instance of node_stat.
51 * Statistics are not logged when they are zero.
52 *
53 * There are two sets of these counters - the first 'WatchList' is a
54 * set of counters that are individually logged. The second 'MiscList'
55 * is a set of counters that are summed together and the sum is logged.
56 * By default, the most important statistics are in the WatchList and
57 * many error statistics are in MiscList. There are also many statistics
58 * that are not in any of these sets, so they are not monitored by default.
59 * It is possible to alter these lists using configuration options:
60 *
61 * WatchAdd X Adds X to WachList
62 * WatchRemove X Removes X from WachList
63 * WatchSet All Adds all statistics to WatchList
64 * WatchSet None Removes all statistics from WachList
65 *
66 * There are also Misc* variants fo these options, they modifies MiscList
67 * instead of WatchList.
68 *
69 * Example:
70 *
71 * WatchSet None
72 * WatchAdd node_octets
73 * WatchAdd node_rssi
74 * WatchAdd is_rx_acl
75 * WatchAdd is_scan_active
76 *
77 * That causes that just the four mentioned data streams are logged.
78 *
79 *
80 * By default, madwifi plugin enumerates network interfaces using /sys
81 * filesystem. Configuration option `Source' can change this to use
82 * /proc filesystem (which is useful for example when running on Linux
83 * 2.4). But without /sys filesystem, Madwifi plugin cannot check whether
84 * given interface is madwifi interface and there are private ioctls used,
85 * which may do something completely different on non-madwifi devices.
86 * Therefore, the /proc filesystem should always be used together with option
87 * `Interface', to limit found interfaces to madwifi interfaces only.
88 **/
91 #include "collectd.h"
93 #include "common.h"
94 #include "plugin.h"
95 #include "utils_ignorelist.h"
97 #include <dirent.h>
98 #include <sys/ioctl.h>
100 #if !KERNEL_LINUX
101 # error "No applicable input method."
102 #endif
104 #include <linux/wireless.h>
105 #include "madwifi.h"
109 struct stat_spec {
110 uint16_t flags;
111 uint16_t offset;
112 const char *name;
113 };
116 #define OFFSETOF(s, i) ((size_t)&((s *)0)->i)
118 #define FLAG(i) (((uint32_t) 1) << ((i) % 32))
120 #define SPC_STAT 0
121 #define NOD_STAT 1
122 #define IFA_STAT 2
123 #define ATH_STAT 3
124 #define SRC_MASK 3
126 /* By default, the item is disabled */
127 #define D 0
129 /* By default, the item is logged */
130 #define LOG 4
132 /* By default, the item is summed with other such items and logged together */
133 #define SU 8
135 #define SS_STAT(flags, name) { flags | SPC_STAT, 0, #name }
136 #define NS_STAT(flags, name) { flags | NOD_STAT, OFFSETOF(struct ieee80211_nodestats, name), #name }
137 #define IS_STAT(flags, name) { flags | IFA_STAT, OFFSETOF(struct ieee80211_stats, name), #name }
138 #define AS_STAT(flags, name) { flags | ATH_STAT, OFFSETOF(struct ath_stats, name), #name }
141 /*
142 * (Module-)Global variables
143 */
145 /* Indices of special stats in specs array */
146 #define STAT_NODE_OCTETS 0
147 #define STAT_NODE_RSSI 1
148 #define STAT_NODE_TX_RATE 2
149 #define STAT_ATH_NODES 3
150 #define STAT_NS_RX_BEACONS 4
151 #define STAT_AST_ANT_RX 5
152 #define STAT_AST_ANT_TX 6
154 static struct stat_spec specs[] = {
156 /* Special statistics */
157 SS_STAT(LOG, node_octets), /* rx and tx data count (bytes) */
158 SS_STAT(LOG, node_rssi), /* received RSSI of the node */
159 SS_STAT(LOG, node_tx_rate), /* used tx rate to the node */
160 SS_STAT(LOG, ath_nodes), /* the number of associated nodes */
161 SS_STAT(D, ns_rx_beacons), /* rx beacon frames */
162 SS_STAT(LOG, ast_ant_rx), /* rx frames with antenna */
163 SS_STAT(LOG, ast_ant_tx), /* tx frames with antenna */
165 /* Node statistics */
166 NS_STAT(LOG, ns_rx_data), /* rx data frames */
167 NS_STAT(LOG, ns_rx_mgmt), /* rx management frames */
168 NS_STAT(LOG, ns_rx_ctrl), /* rx control frames */
169 NS_STAT(D, ns_rx_ucast), /* rx unicast frames */
170 NS_STAT(D, ns_rx_mcast), /* rx multi/broadcast frames */
171 NS_STAT(D, ns_rx_proberesp), /* rx probe response frames */
172 NS_STAT(LOG, ns_rx_dup), /* rx discard because it's a dup */
173 NS_STAT(SU, ns_rx_noprivacy), /* rx w/ wep but privacy off */
174 NS_STAT(SU, ns_rx_wepfail), /* rx wep processing failed */
175 NS_STAT(SU, ns_rx_demicfail), /* rx demic failed */
176 NS_STAT(SU, ns_rx_decap), /* rx decapsulation failed */
177 NS_STAT(SU, ns_rx_defrag), /* rx defragmentation failed */
178 NS_STAT(D, ns_rx_disassoc), /* rx disassociation */
179 NS_STAT(D, ns_rx_deauth), /* rx deauthentication */
180 NS_STAT(SU, ns_rx_decryptcrc), /* rx decrypt failed on crc */
181 NS_STAT(SU, ns_rx_unauth), /* rx on unauthorized port */
182 NS_STAT(SU, ns_rx_unencrypted), /* rx unecrypted w/ privacy */
183 NS_STAT(LOG, ns_tx_data), /* tx data frames */
184 NS_STAT(LOG, ns_tx_mgmt), /* tx management frames */
185 NS_STAT(D, ns_tx_ucast), /* tx unicast frames */
186 NS_STAT(D, ns_tx_mcast), /* tx multi/broadcast frames */
187 NS_STAT(D, ns_tx_probereq), /* tx probe request frames */
188 NS_STAT(D, ns_tx_uapsd), /* tx on uapsd queue */
189 NS_STAT(SU, ns_tx_novlantag), /* tx discard due to no tag */
190 NS_STAT(SU, ns_tx_vlanmismatch), /* tx discard due to of bad tag */
191 NS_STAT(D, ns_tx_eosplost), /* uapsd EOSP retried out */
192 NS_STAT(D, ns_ps_discard), /* ps discard due to of age */
193 NS_STAT(D, ns_uapsd_triggers), /* uapsd triggers */
194 NS_STAT(LOG, ns_tx_assoc), /* [re]associations */
195 NS_STAT(LOG, ns_tx_auth), /* [re]authentications */
196 NS_STAT(D, ns_tx_deauth), /* deauthentications */
197 NS_STAT(D, ns_tx_disassoc), /* disassociations */
198 NS_STAT(D, ns_psq_drops), /* power save queue drops */
200 /* Iface statistics */
201 IS_STAT(SU, is_rx_badversion), /* rx frame with bad version */
202 IS_STAT(SU, is_rx_tooshort), /* rx frame too short */
203 IS_STAT(LOG, is_rx_wrongbss), /* rx from wrong bssid */
204 IS_STAT(LOG, is_rx_dup), /* rx discard due to it's a dup */
205 IS_STAT(SU, is_rx_wrongdir), /* rx w/ wrong direction */
206 IS_STAT(D, is_rx_mcastecho), /* rx discard due to of mcast echo */
207 IS_STAT(SU, is_rx_notassoc), /* rx discard due to sta !assoc */
208 IS_STAT(SU, is_rx_noprivacy), /* rx w/ wep but privacy off */
209 IS_STAT(SU, is_rx_unencrypted), /* rx w/o wep and privacy on */
210 IS_STAT(SU, is_rx_wepfail), /* rx wep processing failed */
211 IS_STAT(SU, is_rx_decap), /* rx decapsulation failed */
212 IS_STAT(D, is_rx_mgtdiscard), /* rx discard mgt frames */
213 IS_STAT(D, is_rx_ctl), /* rx discard ctrl frames */
214 IS_STAT(D, is_rx_beacon), /* rx beacon frames */
215 IS_STAT(D, is_rx_rstoobig), /* rx rate set truncated */
216 IS_STAT(SU, is_rx_elem_missing), /* rx required element missing*/
217 IS_STAT(SU, is_rx_elem_toobig), /* rx element too big */
218 IS_STAT(SU, is_rx_elem_toosmall), /* rx element too small */
219 IS_STAT(LOG, is_rx_elem_unknown), /* rx element unknown */
220 IS_STAT(SU, is_rx_badchan), /* rx frame w/ invalid chan */
221 IS_STAT(SU, is_rx_chanmismatch), /* rx frame chan mismatch */
222 IS_STAT(SU, is_rx_nodealloc), /* rx frame dropped */
223 IS_STAT(LOG, is_rx_ssidmismatch), /* rx frame ssid mismatch */
224 IS_STAT(SU, is_rx_auth_unsupported), /* rx w/ unsupported auth alg */
225 IS_STAT(SU, is_rx_auth_fail), /* rx sta auth failure */
226 IS_STAT(SU, is_rx_auth_countermeasures),/* rx auth discard due to CM */
227 IS_STAT(SU, is_rx_assoc_bss), /* rx assoc from wrong bssid */
228 IS_STAT(SU, is_rx_assoc_notauth), /* rx assoc w/o auth */
229 IS_STAT(SU, is_rx_assoc_capmismatch), /* rx assoc w/ cap mismatch */
230 IS_STAT(SU, is_rx_assoc_norate), /* rx assoc w/ no rate match */
231 IS_STAT(SU, is_rx_assoc_badwpaie), /* rx assoc w/ bad WPA IE */
232 IS_STAT(LOG, is_rx_deauth), /* rx deauthentication */
233 IS_STAT(LOG, is_rx_disassoc), /* rx disassociation */
234 IS_STAT(SU, is_rx_badsubtype), /* rx frame w/ unknown subtype*/
235 IS_STAT(SU, is_rx_nobuf), /* rx failed for lack of buf */
236 IS_STAT(SU, is_rx_decryptcrc), /* rx decrypt failed on crc */
237 IS_STAT(D, is_rx_ahdemo_mgt), /* rx discard ahdemo mgt frame*/
238 IS_STAT(SU, is_rx_bad_auth), /* rx bad auth request */
239 IS_STAT(SU, is_rx_unauth), /* rx on unauthorized port */
240 IS_STAT(SU, is_rx_badkeyid), /* rx w/ incorrect keyid */
241 IS_STAT(D, is_rx_ccmpreplay), /* rx seq# violation (CCMP), */
242 IS_STAT(D, is_rx_ccmpformat), /* rx format bad (CCMP), */
243 IS_STAT(D, is_rx_ccmpmic), /* rx MIC check failed (CCMP), */
244 IS_STAT(D, is_rx_tkipreplay), /* rx seq# violation (TKIP), */
245 IS_STAT(D, is_rx_tkipformat), /* rx format bad (TKIP), */
246 IS_STAT(D, is_rx_tkipmic), /* rx MIC check failed (TKIP), */
247 IS_STAT(D, is_rx_tkipicv), /* rx ICV check failed (TKIP), */
248 IS_STAT(D, is_rx_badcipher), /* rx failed due to of key type */
249 IS_STAT(D, is_rx_nocipherctx), /* rx failed due to key !setup */
250 IS_STAT(D, is_rx_acl), /* rx discard due to of acl policy */
251 IS_STAT(D, is_rx_ffcnt), /* rx fast frames */
252 IS_STAT(SU, is_rx_badathtnl), /* driver key alloc failed */
253 IS_STAT(SU, is_tx_nobuf), /* tx failed for lack of buf */
254 IS_STAT(SU, is_tx_nonode), /* tx failed for no node */
255 IS_STAT(SU, is_tx_unknownmgt), /* tx of unknown mgt frame */
256 IS_STAT(SU, is_tx_badcipher), /* tx failed due to of key type */
257 IS_STAT(SU, is_tx_nodefkey), /* tx failed due to no defkey */
258 IS_STAT(SU, is_tx_noheadroom), /* tx failed due to no space */
259 IS_STAT(D, is_tx_ffokcnt), /* tx fast frames sent success */
260 IS_STAT(D, is_tx_fferrcnt), /* tx fast frames sent success */
261 IS_STAT(D, is_scan_active), /* active scans started */
262 IS_STAT(D, is_scan_passive), /* passive scans started */
263 IS_STAT(D, is_node_timeout), /* nodes timed out inactivity */
264 IS_STAT(D, is_crypto_nomem), /* no memory for crypto ctx */
265 IS_STAT(D, is_crypto_tkip), /* tkip crypto done in s/w */
266 IS_STAT(D, is_crypto_tkipenmic), /* tkip en-MIC done in s/w */
267 IS_STAT(D, is_crypto_tkipdemic), /* tkip de-MIC done in s/w */
268 IS_STAT(D, is_crypto_tkipcm), /* tkip counter measures */
269 IS_STAT(D, is_crypto_ccmp), /* ccmp crypto done in s/w */
270 IS_STAT(D, is_crypto_wep), /* wep crypto done in s/w */
271 IS_STAT(D, is_crypto_setkey_cipher), /* cipher rejected key */
272 IS_STAT(D, is_crypto_setkey_nokey), /* no key index for setkey */
273 IS_STAT(D, is_crypto_delkey), /* driver key delete failed */
274 IS_STAT(D, is_crypto_badcipher), /* unknown cipher */
275 IS_STAT(D, is_crypto_nocipher), /* cipher not available */
276 IS_STAT(D, is_crypto_attachfail), /* cipher attach failed */
277 IS_STAT(D, is_crypto_swfallback), /* cipher fallback to s/w */
278 IS_STAT(D, is_crypto_keyfail), /* driver key alloc failed */
279 IS_STAT(D, is_crypto_enmicfail), /* en-MIC failed */
280 IS_STAT(SU, is_ibss_capmismatch), /* merge failed-cap mismatch */
281 IS_STAT(SU, is_ibss_norate), /* merge failed-rate mismatch */
282 IS_STAT(D, is_ps_unassoc), /* ps-poll for unassoc. sta */
283 IS_STAT(D, is_ps_badaid), /* ps-poll w/ incorrect aid */
284 IS_STAT(D, is_ps_qempty), /* ps-poll w/ nothing to send */
286 /* Atheros statistics */
287 AS_STAT(D, ast_watchdog), /* device reset by watchdog */
288 AS_STAT(D, ast_hardware), /* fatal hardware error interrupts */
289 AS_STAT(D, ast_bmiss), /* beacon miss interrupts */
290 AS_STAT(D, ast_rxorn), /* rx overrun interrupts */
291 AS_STAT(D, ast_rxeol), /* rx eol interrupts */
292 AS_STAT(D, ast_txurn), /* tx underrun interrupts */
293 AS_STAT(D, ast_mib), /* mib interrupts */
294 AS_STAT(D, ast_tx_packets), /* packet sent on the interface */
295 AS_STAT(D, ast_tx_mgmt), /* management frames transmitted */
296 AS_STAT(LOG, ast_tx_discard), /* frames discarded prior to assoc */
297 AS_STAT(SU, ast_tx_invalid), /* frames discarded due to is device gone */
298 AS_STAT(SU, ast_tx_qstop), /* tx queue stopped because it's full */
299 AS_STAT(SU, ast_tx_encap), /* tx encapsulation failed */
300 AS_STAT(SU, ast_tx_nonode), /* tx failed due to of no node */
301 AS_STAT(SU, ast_tx_nobuf), /* tx failed due to of no tx buffer (data), */
302 AS_STAT(SU, ast_tx_nobufmgt), /* tx failed due to of no tx buffer (mgmt),*/
303 AS_STAT(LOG, ast_tx_xretries), /* tx failed due to of too many retries */
304 AS_STAT(SU, ast_tx_fifoerr), /* tx failed due to of FIFO underrun */
305 AS_STAT(SU, ast_tx_filtered), /* tx failed due to xmit filtered */
306 AS_STAT(LOG, ast_tx_shortretry), /* tx on-chip retries (short), */
307 AS_STAT(LOG, ast_tx_longretry), /* tx on-chip retries (long), */
308 AS_STAT(SU, ast_tx_badrate), /* tx failed due to of bogus xmit rate */
309 AS_STAT(D, ast_tx_noack), /* tx frames with no ack marked */
310 AS_STAT(D, ast_tx_rts), /* tx frames with rts enabled */
311 AS_STAT(D, ast_tx_cts), /* tx frames with cts enabled */
312 AS_STAT(D, ast_tx_shortpre), /* tx frames with short preamble */
313 AS_STAT(LOG, ast_tx_altrate), /* tx frames with alternate rate */
314 AS_STAT(D, ast_tx_protect), /* tx frames with protection */
315 AS_STAT(SU, ast_rx_orn), /* rx failed due to of desc overrun */
316 AS_STAT(LOG, ast_rx_crcerr), /* rx failed due to of bad CRC */
317 AS_STAT(SU, ast_rx_fifoerr), /* rx failed due to of FIFO overrun */
318 AS_STAT(SU, ast_rx_badcrypt), /* rx failed due to of decryption */
319 AS_STAT(SU, ast_rx_badmic), /* rx failed due to of MIC failure */
320 AS_STAT(LOG, ast_rx_phyerr), /* rx PHY error summary count */
321 AS_STAT(SU, ast_rx_tooshort), /* rx discarded due to frame too short */
322 AS_STAT(SU, ast_rx_toobig), /* rx discarded due to frame too large */
323 AS_STAT(SU, ast_rx_nobuf), /* rx setup failed due to of no skbuff */
324 AS_STAT(D, ast_rx_packets), /* packet recv on the interface */
325 AS_STAT(D, ast_rx_mgt), /* management frames received */
326 AS_STAT(D, ast_rx_ctl), /* control frames received */
327 AS_STAT(D, ast_be_xmit), /* beacons transmitted */
328 AS_STAT(SU, ast_be_nobuf), /* no skbuff available for beacon */
329 AS_STAT(D, ast_per_cal), /* periodic calibration calls */
330 AS_STAT(D, ast_per_calfail), /* periodic calibration failed */
331 AS_STAT(D, ast_per_rfgain), /* periodic calibration rfgain reset */
332 AS_STAT(D, ast_rate_calls), /* rate control checks */
333 AS_STAT(D, ast_rate_raise), /* rate control raised xmit rate */
334 AS_STAT(D, ast_rate_drop), /* rate control dropped xmit rate */
335 AS_STAT(D, ast_ant_defswitch), /* rx/default antenna switches */
336 AS_STAT(D, ast_ant_txswitch) /* tx antenna switches */
337 };
339 /* Bounds between SS, NS, IS and AS stats in stats array */
340 static int bounds[4];
342 #define WL_LEN 6
343 /* Bitmasks for logged and error items */
344 static uint32_t watch_items[WL_LEN];
345 static uint32_t misc_items[WL_LEN];
348 static const char *config_keys[] =
349 {
350 "Interface",
351 "IgnoreSelected",
352 "Source",
353 "WatchAdd",
354 "WatchRemove",
355 "WatchSet",
356 "MiscAdd",
357 "MiscRemove",
358 "MiscSet"
359 };
360 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
362 static ignorelist_t *ignorelist = NULL;
364 static int use_sysfs = 1;
365 static int init_state = 0;
367 static inline int item_watched(int i)
368 {
369 assert (i >= 0);
370 assert ((size_t) i < (STATIC_ARRAY_SIZE (watch_items) * 32));
371 return watch_items[i / 32] & FLAG (i);
372 }
374 static inline int item_summed(int i)
375 {
376 assert (i >= 0);
377 assert ((size_t) i < (STATIC_ARRAY_SIZE (misc_items) * 32));
378 return misc_items[i / 32] & FLAG (i);
379 }
381 static inline void watchlist_add (uint32_t *wl, int item)
382 {
383 assert (item >= 0);
384 assert (item < WL_LEN * 32);
385 wl[item / 32] |= FLAG (item);
386 }
388 static inline void watchlist_remove (uint32_t *wl, int item)
389 {
390 assert (item >= 0);
391 assert (item < WL_LEN * 32);
392 wl[item / 32] &= ~FLAG (item);
393 }
395 static inline void watchlist_set (uint32_t *wl, uint32_t val)
396 {
397 for (int i = 0; i < WL_LEN; i++)
398 wl[i] = val;
399 }
401 /* This is horribly inefficient, but it is called only during configuration */
402 static int watchitem_find (const char *name)
403 {
404 int max = STATIC_ARRAY_SIZE (specs);
406 for (int i = 0; i < max; i++)
407 if (strcasecmp (name, specs[i].name) == 0)
408 return i;
410 return -1;
411 }
414 /* Collectd hooks */
416 /* We need init function called before madwifi_config */
418 static int madwifi_real_init (void)
419 {
420 size_t max = STATIC_ARRAY_SIZE (specs);
422 for (size_t i = 0; i < STATIC_ARRAY_SIZE (bounds); i++)
423 bounds[i] = 0;
425 watchlist_set(watch_items, 0);
426 watchlist_set(misc_items, 0);
428 for (size_t i = 0; i < max; i++)
429 {
430 bounds[specs[i].flags & SRC_MASK] = i;
432 if (specs[i].flags & LOG)
433 watch_items[i / 32] |= FLAG (i);
435 if (specs[i].flags & SU)
436 misc_items[i / 32] |= FLAG (i);
437 }
439 for (size_t i = 0; i < STATIC_ARRAY_SIZE (bounds); i++)
440 bounds[i]++;
442 return (0);
443 }
445 static int madwifi_config (const char *key, const char *value)
446 {
447 if (init_state != 1)
448 madwifi_real_init();
449 init_state = 1;
451 if (ignorelist == NULL)
452 ignorelist = ignorelist_create (/* invert = */ 1);
454 if (strcasecmp (key, "Interface") == 0)
455 ignorelist_add (ignorelist, value);
457 else if (strcasecmp (key, "IgnoreSelected") == 0)
458 ignorelist_set_invert (ignorelist, IS_TRUE (value) ? 0 : 1);
460 else if (strcasecmp (key, "Source") == 0)
461 {
462 if (strcasecmp (value, "ProcFS") == 0)
463 use_sysfs = 0;
464 else if (strcasecmp (value, "SysFS") == 0)
465 use_sysfs = 1;
466 else
467 {
468 ERROR ("madwifi plugin: The argument of the `Source' "
469 "option must either be `SysFS' or "
470 "`ProcFS'.");
471 return -1;
472 }
473 }
475 else if (strcasecmp (key, "WatchSet") == 0)
476 {
477 if (strcasecmp (value, "All") == 0)
478 watchlist_set (watch_items, 0xFFFFFFFF);
479 else if (strcasecmp (value, "None") == 0)
480 watchlist_set (watch_items, 0);
481 else return -1;
482 }
484 else if (strcasecmp (key, "WatchAdd") == 0)
485 {
486 int id = watchitem_find (value);
488 if (id < 0)
489 return (-1);
490 else
491 watchlist_add (watch_items, id);
492 }
494 else if (strcasecmp (key, "WatchRemove") == 0)
495 {
496 int id = watchitem_find (value);
498 if (id < 0)
499 return (-1);
500 else
501 watchlist_remove (watch_items, id);
502 }
504 else if (strcasecmp (key, "MiscSet") == 0)
505 {
506 if (strcasecmp (value, "All") == 0)
507 watchlist_set (misc_items, 0xFFFFFFFF);
508 else if (strcasecmp (value, "None") == 0)
509 watchlist_set (misc_items, 0);
510 else return -1;
511 }
513 else if (strcasecmp (key, "MiscAdd") == 0)
514 {
515 int id = watchitem_find (value);
517 if (id < 0)
518 return (-1);
519 else
520 watchlist_add (misc_items, id);
521 }
523 else if (strcasecmp (key, "MiscRemove") == 0)
524 {
525 int id = watchitem_find (value);
527 if (id < 0)
528 return (-1);
529 else
530 watchlist_remove (misc_items, id);
531 }
533 else
534 return (-1);
536 return (0);
537 }
540 static void submit (const char *dev, const char *type, const char *ti1,
541 const char *ti2, value_t *val, int len)
542 {
543 value_list_t vl = VALUE_LIST_INIT;
545 vl.values = val;
546 vl.values_len = len;
547 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
548 sstrncpy (vl.plugin, "madwifi", sizeof (vl.plugin));
549 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
550 sstrncpy (vl.type, type, sizeof (vl.type));
552 if ((ti1 != NULL) && (ti2 != NULL))
553 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s", ti1, ti2);
554 else if ((ti1 != NULL) && (ti2 == NULL))
555 sstrncpy (vl.type_instance, ti1, sizeof (vl.type_instance));
557 plugin_dispatch_values (&vl);
558 }
560 static void submit_derive (const char *dev, const char *type, const char *ti1,
561 const char *ti2, derive_t val)
562 {
563 value_t item;
564 item.derive = val;
565 submit (dev, type, ti1, ti2, &item, 1);
566 }
568 static void submit_derive2 (const char *dev, const char *type, const char *ti1,
569 const char *ti2, derive_t val1, derive_t val2)
570 {
571 value_t items[2];
572 items[0].derive = val1;
573 items[1].derive = val2;
574 submit (dev, type, ti1, ti2, items, 2);
575 }
577 static void submit_gauge (const char *dev, const char *type, const char *ti1,
578 const char *ti2, gauge_t val)
579 {
580 value_t item;
581 item.gauge = val;
582 submit (dev, type, ti1, ti2, &item, 1);
583 }
585 static void submit_antx (const char *dev, const char *name,
586 u_int32_t *vals, int vals_num)
587 {
588 char ti2[16];
590 for (int i = 0; i < vals_num; i++)
591 {
592 if (vals[i] == 0)
593 continue;
595 ssnprintf (ti2, sizeof (ti2), "%i", i);
596 submit_derive (dev, "ath_stat", name, ti2,
597 (derive_t) vals[i]);
598 }
599 }
601 static inline void
602 macaddr_to_str (char *buf, size_t bufsize, const uint8_t mac[IEEE80211_ADDR_LEN])
603 {
604 ssnprintf (buf, bufsize, "%02x:%02x:%02x:%02x:%02x:%02x",
605 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
606 }
608 static void
609 process_stat_struct (int which, const void *ptr, const char *dev, const char *mac,
610 const char *type_name, const char *misc_name)
611 {
612 uint32_t misc = 0;
614 assert (which >= 1);
615 assert (((size_t) which) < STATIC_ARRAY_SIZE (bounds));
617 for (int i = bounds[which - 1]; i < bounds[which]; i++)
618 {
619 uint32_t val = *(uint32_t *)(((char *) ptr) + specs[i].offset) ;
621 if (item_watched (i) && (val != 0))
622 submit_derive (dev, type_name, specs[i].name, mac, val);
624 if (item_summed (i))
625 misc += val;
626 }
628 if (misc != 0)
629 submit_derive (dev, type_name, misc_name, mac, misc);
631 }
633 static int
634 process_athstats (int sk, const char *dev)
635 {
636 struct ifreq ifr;
637 struct ath_stats stats;
638 int status;
640 sstrncpy (ifr.ifr_name, dev, sizeof (ifr.ifr_name));
641 ifr.ifr_data = (void *) &stats;
642 status = ioctl (sk, SIOCGATHSTATS, &ifr);
643 if (status < 0)
644 {
645 /* Silent, because not all interfaces support all ioctls. */
646 DEBUG ("madwifi plugin: Sending IO-control "
647 "SIOCGATHSTATS to device %s "
648 "failed with status %i.",
649 dev, status);
650 return (status);
651 }
653 /* These stats are handled as a special case, because they are
654 eight values each */
656 if (item_watched (STAT_AST_ANT_RX))
657 submit_antx (dev, "ast_ant_rx", stats.ast_ant_rx,
658 STATIC_ARRAY_SIZE (stats.ast_ant_rx));
660 if (item_watched (STAT_AST_ANT_TX))
661 submit_antx (dev, "ast_ant_tx", stats.ast_ant_tx,
662 STATIC_ARRAY_SIZE (stats.ast_ant_tx));
664 /* All other ath statistics */
665 process_stat_struct (ATH_STAT, &stats, dev, NULL, "ath_stat", "ast_misc");
666 return (0);
667 }
669 static int
670 process_80211stats (int sk, const char *dev)
671 {
672 struct ifreq ifr;
673 struct ieee80211_stats stats;
674 int status;
676 sstrncpy (ifr.ifr_name, dev, sizeof (ifr.ifr_name));
677 ifr.ifr_data = (void *) &stats;
678 status = ioctl(sk, SIOCG80211STATS, &ifr);
679 if (status < 0)
680 {
681 /* Silent, because not all interfaces support all ioctls. */
682 DEBUG ("madwifi plugin: Sending IO-control "
683 "SIOCG80211STATS to device %s "
684 "failed with status %i.",
685 dev, status);
686 return (status);
687 }
689 process_stat_struct (IFA_STAT, &stats, dev, NULL, "ath_stat", "is_misc");
690 return (0);
691 }
694 static int
695 process_station (int sk, const char *dev, struct ieee80211req_sta_info *si)
696 {
697 static char mac[DATA_MAX_NAME_LEN];
698 struct ieee80211req_sta_stats stats;
699 const struct ieee80211_nodestats *ns = &stats.is_stats;
700 int status;
702 macaddr_to_str (mac, sizeof (mac), si->isi_macaddr);
704 if (item_watched (STAT_NODE_TX_RATE))
705 submit_gauge (dev, "node_tx_rate", mac, NULL,
706 (si->isi_rates[si->isi_txrate] & IEEE80211_RATE_VAL) / 2);
708 if (item_watched (STAT_NODE_RSSI))
709 submit_gauge (dev, "node_rssi", mac, NULL, si->isi_rssi);
711 struct iwreq iwr = {
712 .u.data.pointer = (void *) &stats,
713 .u.data.length = sizeof (stats)
714 };
715 sstrncpy(iwr.ifr_name, dev, sizeof (iwr.ifr_name));
717 memcpy(stats.is_u.macaddr, si->isi_macaddr, IEEE80211_ADDR_LEN);
718 status = ioctl(sk, IEEE80211_IOCTL_STA_STATS, &iwr);
719 if (status < 0)
720 {
721 /* Silent, because not all interfaces support all ioctls. */
722 DEBUG ("madwifi plugin: Sending IO-control "
723 "IEEE80211_IOCTL_STA_STATS to device %s "
724 "failed with status %i.",
725 dev, status);
726 return (status);
727 }
729 /* These two stats are handled as a special case as they are
730 a pair of 64bit values */
731 if (item_watched (STAT_NODE_OCTETS))
732 submit_derive2 (dev, "node_octets", mac, NULL,
733 ns->ns_rx_bytes, ns->ns_tx_bytes);
735 /* This stat is handled as a special case, because it is stored
736 as uin64_t, but we will ignore upper half */
737 if (item_watched (STAT_NS_RX_BEACONS))
738 submit_derive (dev, "node_stat", "ns_rx_beacons", mac,
739 (ns->ns_rx_beacons & 0xFFFFFFFF));
741 /* All other node statistics */
742 process_stat_struct (NOD_STAT, ns, dev, mac, "node_stat", "ns_misc");
743 return (0);
744 }
746 static int
747 process_stations (int sk, const char *dev)
748 {
749 uint8_t buf[24*1024] = { 0 };
750 uint8_t *cp;
751 int nodes;
752 size_t len;
753 int status;
755 struct iwreq iwr = {
756 .u.data.pointer = (void *) buf,
757 .u.data.length = sizeof (buf)
758 };
759 sstrncpy (iwr.ifr_name, dev, sizeof (iwr.ifr_name));
761 status = ioctl (sk, IEEE80211_IOCTL_STA_INFO, &iwr);
762 if (status < 0)
763 {
764 /* Silent, because not all interfaces support all ioctls. */
765 DEBUG ("madwifi plugin: Sending IO-control "
766 "IEEE80211_IOCTL_STA_INFO to device %s "
767 "failed with status %i.",
768 dev, status);
769 return (status);
770 }
772 len = iwr.u.data.length;
774 cp = buf;
775 nodes = 0;
776 while (len >= sizeof (struct ieee80211req_sta_info))
777 {
778 struct ieee80211req_sta_info *si = (void *) cp;
779 process_station(sk, dev, si);
780 cp += si->isi_len;
781 len -= si->isi_len;
782 nodes++;
783 }
785 if (item_watched (STAT_ATH_NODES))
786 submit_gauge (dev, "ath_nodes", NULL, NULL, nodes);
787 return (0);
788 }
790 static int
791 process_device (int sk, const char *dev)
792 {
793 int num_success = 0;
794 int status;
796 status = process_athstats (sk, dev);
797 if (status == 0)
798 num_success++;
800 status = process_80211stats (sk, dev);
801 if (status == 0)
802 num_success++;
804 status = process_stations (sk, dev);
805 if (status == 0)
806 num_success++;
808 return ((num_success == 0) ? -1 : 0);
809 }
811 static int
812 check_devname (const char *dev)
813 {
814 char buf[PATH_MAX];
815 char buf2[PATH_MAX];
816 int i;
818 if (dev[0] == '.')
819 return 0;
821 ssnprintf (buf, sizeof (buf), "/sys/class/net/%s/device/driver", dev);
822 buf[sizeof (buf) - 1] = '\0';
824 i = readlink (buf, buf2, sizeof (buf2) - 1);
825 if (i < 0)
826 return 0;
828 buf2[i] = '\0';
830 if (strstr (buf2, "/drivers/ath_") == NULL)
831 return 0;
832 return 1;
833 }
835 static int
836 sysfs_iterate(int sk)
837 {
838 struct dirent *de;
839 DIR *nets;
840 int status;
841 int num_success;
842 int num_fail;
844 nets = opendir ("/sys/class/net/");
845 if (nets == NULL)
846 {
847 WARNING ("madwifi plugin: opening /sys/class/net failed");
848 return (-1);
849 }
851 num_success = 0;
852 num_fail = 0;
853 while ((de = readdir (nets)))
854 {
855 if (check_devname (de->d_name) == 0)
856 continue;
858 if (ignorelist_match (ignorelist, de->d_name) != 0)
859 continue;
861 status = process_device (sk, de->d_name);
862 if (status != 0)
863 {
864 ERROR ("madwifi plugin: Processing interface "
865 "%s failed.", de->d_name);
866 num_fail++;
867 }
868 else
869 {
870 num_success++;
871 }
872 } /* while (readdir) */
874 closedir(nets);
876 if ((num_success == 0) && (num_fail != 0))
877 return (-1);
878 return (0);
879 }
881 static int
882 procfs_iterate(int sk)
883 {
884 char buffer[1024];
885 char *device, *dummy;
886 FILE *fh;
887 int status;
888 int num_success;
889 int num_fail;
891 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
892 {
893 WARNING ("madwifi plugin: opening /proc/net/dev failed");
894 return (-1);
895 }
897 num_success = 0;
898 num_fail = 0;
899 while (fgets (buffer, sizeof (buffer), fh) != NULL)
900 {
901 dummy = strchr(buffer, ':');
902 if (dummy == NULL)
903 continue;
904 dummy[0] = 0;
906 device = buffer;
907 while (device[0] == ' ')
908 device++;
910 if (device[0] == 0)
911 continue;
913 if (ignorelist_match (ignorelist, device) != 0)
914 continue;
916 status = process_device (sk, device);
917 if (status != 0)
918 {
919 ERROR ("madwifi plugin: Processing interface "
920 "%s failed.", device);
921 num_fail++;
922 }
923 else
924 {
925 num_success++;
926 }
927 } /* while (fgets) */
929 fclose(fh);
931 if ((num_success == 0) && (num_fail != 0))
932 return (-1);
933 return 0;
934 }
936 static int madwifi_read (void)
937 {
938 int rv;
939 int sk;
941 if (init_state == 0)
942 madwifi_real_init();
943 init_state = 2;
945 sk = socket(AF_INET, SOCK_DGRAM, 0);
946 if (sk < 0)
947 return (-1);
950 /* procfs iteration is not safe because it does not check whether given
951 interface is madwifi interface and there are private ioctls used, which
952 may do something completely different on non-madwifi devices.
953 Therefore, it is not used unless explicitly enabled (and should be used
954 together with ignorelist). */
956 if (use_sysfs)
957 rv = sysfs_iterate(sk);
958 else
959 rv = procfs_iterate(sk);
961 close(sk);
963 return rv;
964 }
966 void module_register (void)
967 {
968 plugin_register_config ("madwifi", madwifi_config,
969 config_keys, config_keys_num);
971 plugin_register_read ("madwifi", madwifi_read);
972 }