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"
92 #include "common.h"
93 #include "plugin.h"
94 #include "configfile.h"
95 #include "utils_ignorelist.h"
97 #include <dirent.h>
98 #include <sys/ioctl.h>
99 #include <sys/socket.h>
101 #if !KERNEL_LINUX
102 # error "No applicable input method."
103 #endif
105 #include <linux/wireless.h>
106 #include "madwifi.h"
110 struct stat_spec {
111 uint16_t flags;
112 uint16_t offset;
113 const char *name;
114 };
117 #define OFFSETOF(s, i) ((size_t)&((s *)0)->i)
119 #define FLAG(i) (((uint32_t) 1) << ((i) % 32))
121 #define SPC_STAT 0
122 #define NOD_STAT 1
123 #define IFA_STAT 2
124 #define ATH_STAT 3
125 #define SRC_MASK 3
127 /* By default, the item is disabled */
128 #define D 0
130 /* By default, the item is logged */
131 #define LOG 4
133 /* By default, the item is summed with other such items and logged together */
134 #define SU 8
136 #define SS_STAT(flags, name) { flags | SPC_STAT, 0, #name }
137 #define NS_STAT(flags, name) { flags | NOD_STAT, OFFSETOF(struct ieee80211_nodestats, name), #name }
138 #define IS_STAT(flags, name) { flags | IFA_STAT, OFFSETOF(struct ieee80211_stats, name), #name }
139 #define AS_STAT(flags, name) { flags | ATH_STAT, OFFSETOF(struct ath_stats, name), #name }
142 /*
143 * (Module-)Global variables
144 */
146 /* Indices of special stats in specs array */
147 #define STAT_NODE_OCTETS 0
148 #define STAT_NODE_RSSI 1
149 #define STAT_NODE_TX_RATE 2
150 #define STAT_ATH_NODES 3
151 #define STAT_NS_RX_BEACONS 4
152 #define STAT_AST_ANT_RX 5
153 #define STAT_AST_ANT_TX 6
155 static struct stat_spec specs[] = {
157 /* Special statistics */
158 SS_STAT(LOG, node_octets), /* rx and tx data count (bytes) */
159 SS_STAT(LOG, node_rssi), /* received RSSI of the node */
160 SS_STAT(LOG, node_tx_rate), /* used tx rate to the node */
161 SS_STAT(LOG, ath_nodes), /* the number of associated nodes */
162 SS_STAT(D, ns_rx_beacons), /* rx beacon frames */
163 SS_STAT(LOG, ast_ant_rx), /* rx frames with antenna */
164 SS_STAT(LOG, ast_ant_tx), /* tx frames with antenna */
166 /* Node statistics */
167 NS_STAT(LOG, ns_rx_data), /* rx data frames */
168 NS_STAT(LOG, ns_rx_mgmt), /* rx management frames */
169 NS_STAT(LOG, ns_rx_ctrl), /* rx control frames */
170 NS_STAT(D, ns_rx_ucast), /* rx unicast frames */
171 NS_STAT(D, ns_rx_mcast), /* rx multi/broadcast frames */
172 NS_STAT(D, ns_rx_proberesp), /* rx probe response frames */
173 NS_STAT(LOG, ns_rx_dup), /* rx discard because it's a dup */
174 NS_STAT(SU, ns_rx_noprivacy), /* rx w/ wep but privacy off */
175 NS_STAT(SU, ns_rx_wepfail), /* rx wep processing failed */
176 NS_STAT(SU, ns_rx_demicfail), /* rx demic failed */
177 NS_STAT(SU, ns_rx_decap), /* rx decapsulation failed */
178 NS_STAT(SU, ns_rx_defrag), /* rx defragmentation failed */
179 NS_STAT(D, ns_rx_disassoc), /* rx disassociation */
180 NS_STAT(D, ns_rx_deauth), /* rx deauthentication */
181 NS_STAT(SU, ns_rx_decryptcrc), /* rx decrypt failed on crc */
182 NS_STAT(SU, ns_rx_unauth), /* rx on unauthorized port */
183 NS_STAT(SU, ns_rx_unencrypted), /* rx unecrypted w/ privacy */
184 NS_STAT(LOG, ns_tx_data), /* tx data frames */
185 NS_STAT(LOG, ns_tx_mgmt), /* tx management frames */
186 NS_STAT(D, ns_tx_ucast), /* tx unicast frames */
187 NS_STAT(D, ns_tx_mcast), /* tx multi/broadcast frames */
188 NS_STAT(D, ns_tx_probereq), /* tx probe request frames */
189 NS_STAT(D, ns_tx_uapsd), /* tx on uapsd queue */
190 NS_STAT(SU, ns_tx_novlantag), /* tx discard due to no tag */
191 NS_STAT(SU, ns_tx_vlanmismatch), /* tx discard due to of bad tag */
192 NS_STAT(D, ns_tx_eosplost), /* uapsd EOSP retried out */
193 NS_STAT(D, ns_ps_discard), /* ps discard due to of age */
194 NS_STAT(D, ns_uapsd_triggers), /* uapsd triggers */
195 NS_STAT(LOG, ns_tx_assoc), /* [re]associations */
196 NS_STAT(LOG, ns_tx_auth), /* [re]authentications */
197 NS_STAT(D, ns_tx_deauth), /* deauthentications */
198 NS_STAT(D, ns_tx_disassoc), /* disassociations */
199 NS_STAT(D, ns_psq_drops), /* power save queue drops */
201 /* Iface statistics */
202 IS_STAT(SU, is_rx_badversion), /* rx frame with bad version */
203 IS_STAT(SU, is_rx_tooshort), /* rx frame too short */
204 IS_STAT(LOG, is_rx_wrongbss), /* rx from wrong bssid */
205 IS_STAT(LOG, is_rx_dup), /* rx discard due to it's a dup */
206 IS_STAT(SU, is_rx_wrongdir), /* rx w/ wrong direction */
207 IS_STAT(D, is_rx_mcastecho), /* rx discard due to of mcast echo */
208 IS_STAT(SU, is_rx_notassoc), /* rx discard due to sta !assoc */
209 IS_STAT(SU, is_rx_noprivacy), /* rx w/ wep but privacy off */
210 IS_STAT(SU, is_rx_unencrypted), /* rx w/o wep and privacy on */
211 IS_STAT(SU, is_rx_wepfail), /* rx wep processing failed */
212 IS_STAT(SU, is_rx_decap), /* rx decapsulation failed */
213 IS_STAT(D, is_rx_mgtdiscard), /* rx discard mgt frames */
214 IS_STAT(D, is_rx_ctl), /* rx discard ctrl frames */
215 IS_STAT(D, is_rx_beacon), /* rx beacon frames */
216 IS_STAT(D, is_rx_rstoobig), /* rx rate set truncated */
217 IS_STAT(SU, is_rx_elem_missing), /* rx required element missing*/
218 IS_STAT(SU, is_rx_elem_toobig), /* rx element too big */
219 IS_STAT(SU, is_rx_elem_toosmall), /* rx element too small */
220 IS_STAT(LOG, is_rx_elem_unknown), /* rx element unknown */
221 IS_STAT(SU, is_rx_badchan), /* rx frame w/ invalid chan */
222 IS_STAT(SU, is_rx_chanmismatch), /* rx frame chan mismatch */
223 IS_STAT(SU, is_rx_nodealloc), /* rx frame dropped */
224 IS_STAT(LOG, is_rx_ssidmismatch), /* rx frame ssid mismatch */
225 IS_STAT(SU, is_rx_auth_unsupported), /* rx w/ unsupported auth alg */
226 IS_STAT(SU, is_rx_auth_fail), /* rx sta auth failure */
227 IS_STAT(SU, is_rx_auth_countermeasures),/* rx auth discard due to CM */
228 IS_STAT(SU, is_rx_assoc_bss), /* rx assoc from wrong bssid */
229 IS_STAT(SU, is_rx_assoc_notauth), /* rx assoc w/o auth */
230 IS_STAT(SU, is_rx_assoc_capmismatch), /* rx assoc w/ cap mismatch */
231 IS_STAT(SU, is_rx_assoc_norate), /* rx assoc w/ no rate match */
232 IS_STAT(SU, is_rx_assoc_badwpaie), /* rx assoc w/ bad WPA IE */
233 IS_STAT(LOG, is_rx_deauth), /* rx deauthentication */
234 IS_STAT(LOG, is_rx_disassoc), /* rx disassociation */
235 IS_STAT(SU, is_rx_badsubtype), /* rx frame w/ unknown subtype*/
236 IS_STAT(SU, is_rx_nobuf), /* rx failed for lack of buf */
237 IS_STAT(SU, is_rx_decryptcrc), /* rx decrypt failed on crc */
238 IS_STAT(D, is_rx_ahdemo_mgt), /* rx discard ahdemo mgt frame*/
239 IS_STAT(SU, is_rx_bad_auth), /* rx bad auth request */
240 IS_STAT(SU, is_rx_unauth), /* rx on unauthorized port */
241 IS_STAT(SU, is_rx_badkeyid), /* rx w/ incorrect keyid */
242 IS_STAT(D, is_rx_ccmpreplay), /* rx seq# violation (CCMP), */
243 IS_STAT(D, is_rx_ccmpformat), /* rx format bad (CCMP), */
244 IS_STAT(D, is_rx_ccmpmic), /* rx MIC check failed (CCMP), */
245 IS_STAT(D, is_rx_tkipreplay), /* rx seq# violation (TKIP), */
246 IS_STAT(D, is_rx_tkipformat), /* rx format bad (TKIP), */
247 IS_STAT(D, is_rx_tkipmic), /* rx MIC check failed (TKIP), */
248 IS_STAT(D, is_rx_tkipicv), /* rx ICV check failed (TKIP), */
249 IS_STAT(D, is_rx_badcipher), /* rx failed due to of key type */
250 IS_STAT(D, is_rx_nocipherctx), /* rx failed due to key !setup */
251 IS_STAT(D, is_rx_acl), /* rx discard due to of acl policy */
252 IS_STAT(D, is_rx_ffcnt), /* rx fast frames */
253 IS_STAT(SU, is_rx_badathtnl), /* driver key alloc failed */
254 IS_STAT(SU, is_tx_nobuf), /* tx failed for lack of buf */
255 IS_STAT(SU, is_tx_nonode), /* tx failed for no node */
256 IS_STAT(SU, is_tx_unknownmgt), /* tx of unknown mgt frame */
257 IS_STAT(SU, is_tx_badcipher), /* tx failed due to of key type */
258 IS_STAT(SU, is_tx_nodefkey), /* tx failed due to no defkey */
259 IS_STAT(SU, is_tx_noheadroom), /* tx failed due to no space */
260 IS_STAT(D, is_tx_ffokcnt), /* tx fast frames sent success */
261 IS_STAT(D, is_tx_fferrcnt), /* tx fast frames sent success */
262 IS_STAT(D, is_scan_active), /* active scans started */
263 IS_STAT(D, is_scan_passive), /* passive scans started */
264 IS_STAT(D, is_node_timeout), /* nodes timed out inactivity */
265 IS_STAT(D, is_crypto_nomem), /* no memory for crypto ctx */
266 IS_STAT(D, is_crypto_tkip), /* tkip crypto done in s/w */
267 IS_STAT(D, is_crypto_tkipenmic), /* tkip en-MIC done in s/w */
268 IS_STAT(D, is_crypto_tkipdemic), /* tkip de-MIC done in s/w */
269 IS_STAT(D, is_crypto_tkipcm), /* tkip counter measures */
270 IS_STAT(D, is_crypto_ccmp), /* ccmp crypto done in s/w */
271 IS_STAT(D, is_crypto_wep), /* wep crypto done in s/w */
272 IS_STAT(D, is_crypto_setkey_cipher), /* cipher rejected key */
273 IS_STAT(D, is_crypto_setkey_nokey), /* no key index for setkey */
274 IS_STAT(D, is_crypto_delkey), /* driver key delete failed */
275 IS_STAT(D, is_crypto_badcipher), /* unknown cipher */
276 IS_STAT(D, is_crypto_nocipher), /* cipher not available */
277 IS_STAT(D, is_crypto_attachfail), /* cipher attach failed */
278 IS_STAT(D, is_crypto_swfallback), /* cipher fallback to s/w */
279 IS_STAT(D, is_crypto_keyfail), /* driver key alloc failed */
280 IS_STAT(D, is_crypto_enmicfail), /* en-MIC failed */
281 IS_STAT(SU, is_ibss_capmismatch), /* merge failed-cap mismatch */
282 IS_STAT(SU, is_ibss_norate), /* merge failed-rate mismatch */
283 IS_STAT(D, is_ps_unassoc), /* ps-poll for unassoc. sta */
284 IS_STAT(D, is_ps_badaid), /* ps-poll w/ incorrect aid */
285 IS_STAT(D, is_ps_qempty), /* ps-poll w/ nothing to send */
287 /* Atheros statistics */
288 AS_STAT(D, ast_watchdog), /* device reset by watchdog */
289 AS_STAT(D, ast_hardware), /* fatal hardware error interrupts */
290 AS_STAT(D, ast_bmiss), /* beacon miss interrupts */
291 AS_STAT(D, ast_rxorn), /* rx overrun interrupts */
292 AS_STAT(D, ast_rxeol), /* rx eol interrupts */
293 AS_STAT(D, ast_txurn), /* tx underrun interrupts */
294 AS_STAT(D, ast_mib), /* mib interrupts */
295 AS_STAT(D, ast_tx_packets), /* packet sent on the interface */
296 AS_STAT(D, ast_tx_mgmt), /* management frames transmitted */
297 AS_STAT(LOG, ast_tx_discard), /* frames discarded prior to assoc */
298 AS_STAT(SU, ast_tx_invalid), /* frames discarded due to is device gone */
299 AS_STAT(SU, ast_tx_qstop), /* tx queue stopped because it's full */
300 AS_STAT(SU, ast_tx_encap), /* tx encapsulation failed */
301 AS_STAT(SU, ast_tx_nonode), /* tx failed due to of no node */
302 AS_STAT(SU, ast_tx_nobuf), /* tx failed due to of no tx buffer (data), */
303 AS_STAT(SU, ast_tx_nobufmgt), /* tx failed due to of no tx buffer (mgmt),*/
304 AS_STAT(LOG, ast_tx_xretries), /* tx failed due to of too many retries */
305 AS_STAT(SU, ast_tx_fifoerr), /* tx failed due to of FIFO underrun */
306 AS_STAT(SU, ast_tx_filtered), /* tx failed due to xmit filtered */
307 AS_STAT(LOG, ast_tx_shortretry), /* tx on-chip retries (short), */
308 AS_STAT(LOG, ast_tx_longretry), /* tx on-chip retries (long), */
309 AS_STAT(SU, ast_tx_badrate), /* tx failed due to of bogus xmit rate */
310 AS_STAT(D, ast_tx_noack), /* tx frames with no ack marked */
311 AS_STAT(D, ast_tx_rts), /* tx frames with rts enabled */
312 AS_STAT(D, ast_tx_cts), /* tx frames with cts enabled */
313 AS_STAT(D, ast_tx_shortpre), /* tx frames with short preamble */
314 AS_STAT(LOG, ast_tx_altrate), /* tx frames with alternate rate */
315 AS_STAT(D, ast_tx_protect), /* tx frames with protection */
316 AS_STAT(SU, ast_rx_orn), /* rx failed due to of desc overrun */
317 AS_STAT(LOG, ast_rx_crcerr), /* rx failed due to of bad CRC */
318 AS_STAT(SU, ast_rx_fifoerr), /* rx failed due to of FIFO overrun */
319 AS_STAT(SU, ast_rx_badcrypt), /* rx failed due to of decryption */
320 AS_STAT(SU, ast_rx_badmic), /* rx failed due to of MIC failure */
321 AS_STAT(LOG, ast_rx_phyerr), /* rx PHY error summary count */
322 AS_STAT(SU, ast_rx_tooshort), /* rx discarded due to frame too short */
323 AS_STAT(SU, ast_rx_toobig), /* rx discarded due to frame too large */
324 AS_STAT(SU, ast_rx_nobuf), /* rx setup failed due to of no skbuff */
325 AS_STAT(D, ast_rx_packets), /* packet recv on the interface */
326 AS_STAT(D, ast_rx_mgt), /* management frames received */
327 AS_STAT(D, ast_rx_ctl), /* control frames received */
328 AS_STAT(D, ast_be_xmit), /* beacons transmitted */
329 AS_STAT(SU, ast_be_nobuf), /* no skbuff available for beacon */
330 AS_STAT(D, ast_per_cal), /* periodic calibration calls */
331 AS_STAT(D, ast_per_calfail), /* periodic calibration failed */
332 AS_STAT(D, ast_per_rfgain), /* periodic calibration rfgain reset */
333 AS_STAT(D, ast_rate_calls), /* rate control checks */
334 AS_STAT(D, ast_rate_raise), /* rate control raised xmit rate */
335 AS_STAT(D, ast_rate_drop), /* rate control dropped xmit rate */
336 AS_STAT(D, ast_ant_defswitch), /* rx/default antenna switches */
337 AS_STAT(D, ast_ant_txswitch) /* tx antenna switches */
338 };
340 /* Bounds between SS, NS, IS and AS stats in stats array */
341 static int bounds[4];
343 #define WL_LEN 6
344 /* Bitmasks for logged and error items */
345 static uint32_t watch_items[WL_LEN];
346 static uint32_t misc_items[WL_LEN];
349 static const char *config_keys[] =
350 {
351 "Interface",
352 "IgnoreSelected",
353 "Source",
354 "WatchAdd",
355 "WatchRemove",
356 "WatchSet",
357 "MiscAdd",
358 "MiscRemove",
359 "MiscSet"
360 };
361 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
363 static ignorelist_t *ignorelist = NULL;
365 static int use_sysfs = 1;
366 static int init_state = 0;
368 static inline int item_watched(int i)
369 {
370 return watch_items[i / 32] & FLAG (i);
371 }
373 static inline int item_summed(int i)
374 {
375 return misc_items[i / 32] & FLAG (i);
376 }
378 static inline void watchlist_add (uint32_t *wl, int item)
379 {
380 wl[item / 32] |= FLAG (item);
381 }
383 static inline void watchlist_remove (uint32_t *wl, int item)
384 {
385 wl[item / 32] &= ~FLAG (item);
386 }
388 static inline void watchlist_set (uint32_t *wl, uint32_t val)
389 {
390 int i;
391 for (i = 0; i < WL_LEN; i++)
392 wl[i] = val;
393 }
395 /* This is horribly inefficient, but it is called only during configuration */
396 static int watchitem_find (const char *name)
397 {
398 int max = STATIC_ARRAY_SIZE (specs);
399 int i;
401 for (i = 0; i < max; i++)
402 if (strcasecmp (name, specs[i].name) == 0)
403 return i;
405 return -1;
406 }
409 /* Collectd hooks */
411 /* We need init function called before madwifi_config */
413 static int madwifi_real_init (void)
414 {
415 int max = STATIC_ARRAY_SIZE (specs);
416 int i;
418 for (i = 0; i < STATIC_ARRAY_SIZE (bounds); i++)
419 bounds[i] = 0;
421 watchlist_set(watch_items, 0);
422 watchlist_set(misc_items, 0);
424 for (i = 0; i < max; i++)
425 {
426 bounds[specs[i].flags & SRC_MASK] = i;
428 if (specs[i].flags & LOG)
429 watch_items[i / 32] |= FLAG (i);
431 if (specs[i].flags & SU)
432 misc_items[i / 32] |= FLAG (i);
433 }
435 for (i = 0; i < STATIC_ARRAY_SIZE (bounds); i++)
436 bounds[i]++;
438 return (0);
439 }
441 static int madwifi_config (const char *key, const char *value)
442 {
443 if (init_state != 1)
444 madwifi_real_init();
445 init_state = 1;
447 if (ignorelist == NULL)
448 ignorelist = ignorelist_create (/* invert = */ 1);
450 if (strcasecmp (key, "Interface") == 0)
451 ignorelist_add (ignorelist, value);
453 else if (strcasecmp (key, "IgnoreSelected") == 0)
454 ignorelist_set_invert (ignorelist, IS_TRUE (value) ? 0 : 1);
456 else if (strcasecmp (key, "Source") == 0)
457 {
458 if (strcasecmp (value, "ProcFS") == 0)
459 use_sysfs = 0;
460 else if (strcasecmp (value, "SysFS") == 0)
461 use_sysfs = 1;
462 else
463 {
464 ERROR ("madwifi plugin: The argument of the `Source' "
465 "option must either be `SysFS' or "
466 "`ProcFS'.");
467 return -1;
468 }
469 }
471 else if (strcasecmp (key, "WatchSet") == 0)
472 {
473 if (strcasecmp (value, "All") == 0)
474 watchlist_set (watch_items, 0xFFFFFFFF);
475 else if (strcasecmp (value, "None") == 0)
476 watchlist_set (watch_items, 0);
477 else return -1;
478 }
480 else if (strcasecmp (key, "WatchAdd") == 0)
481 {
482 int id = watchitem_find (value);
484 if (id < 0)
485 return (-1);
486 else
487 watchlist_add (watch_items, id);
488 }
490 else if (strcasecmp (key, "WatchRemove") == 0)
491 {
492 int id = watchitem_find (value);
494 if (id < 0)
495 return (-1);
496 else
497 watchlist_remove (watch_items, id);
498 }
500 else if (strcasecmp (key, "MiscSet") == 0)
501 {
502 if (strcasecmp (value, "All") == 0)
503 watchlist_set (misc_items, 0xFFFFFFFF);
504 else if (strcasecmp (value, "None") == 0)
505 watchlist_set (misc_items, 0);
506 else return -1;
507 }
509 else if (strcasecmp (key, "MiscAdd") == 0)
510 {
511 int id = watchitem_find (value);
513 if (id < 0)
514 return (-1);
515 else
516 watchlist_add (misc_items, id);
517 }
519 else if (strcasecmp (key, "MiscRemove") == 0)
520 {
521 int id = watchitem_find (value);
523 if (id < 0)
524 return (-1);
525 else
526 watchlist_remove (misc_items, id);
527 }
529 else
530 return (-1);
532 return (0);
533 }
536 static void submit (const char *dev, const char *type, const char *ti1,
537 const char *ti2, value_t *val, int len)
538 {
539 value_list_t vl = VALUE_LIST_INIT;
541 vl.values = val;
542 vl.values_len = len;
543 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
544 sstrncpy (vl.plugin, "madwifi", sizeof (vl.plugin));
545 sstrncpy (vl.plugin_instance, dev, sizeof (vl.plugin_instance));
546 sstrncpy (vl.type, type, sizeof (vl.type));
548 if ((ti1 != NULL) && (ti2 != NULL))
549 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%s-%s", ti1, ti2);
550 else if ((ti1 != NULL) && (ti2 == NULL))
551 sstrncpy (vl.type_instance, ti1, sizeof (vl.type_instance));
553 plugin_dispatch_values (&vl);
554 }
556 static void submit_counter (const char *dev, const char *type, const char *ti1,
557 const char *ti2, counter_t val)
558 {
559 value_t item;
560 item.counter = val;
561 submit (dev, type, ti1, ti2, &item, 1);
562 }
564 static void submit_counter2 (const char *dev, const char *type, const char *ti1,
565 const char *ti2, counter_t val1, counter_t val2)
566 {
567 value_t items[2];
568 items[0].counter = val1;
569 items[1].counter = val2;
570 submit (dev, type, ti1, ti2, items, 2);
571 }
573 static void submit_gauge (const char *dev, const char *type, const char *ti1,
574 const char *ti2, gauge_t val)
575 {
576 value_t item;
577 item.gauge = val;
578 submit (dev, type, ti1, ti2, &item, 1);
579 }
581 static void submit_antx (const char *dev, const char *name,
582 u_int32_t *vals, int vals_num)
583 {
584 char ti2[16];
585 int i;
587 for (i = 0; i < vals_num; i++)
588 {
589 if (vals[i] == 0)
590 continue;
592 ssnprintf (ti2, sizeof (ti2), "antenna%i", i);
593 submit_counter (dev, "ath_stat", name, ti2,
594 (counter_t) vals[i]);
595 }
596 }
598 static inline void
599 macaddr_to_str (char *buf, size_t bufsize, const uint8_t mac[IEEE80211_ADDR_LEN])
600 {
601 ssnprintf (buf, bufsize, "%02x:%02x:%02x:%02x:%02x:%02x",
602 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
603 }
605 static void
606 process_stat_struct (int which, const void *ptr, const char *dev, const char *mac,
607 const char *type_name, const char *misc_name)
608 {
609 uint32_t misc = 0;
610 int i;
612 for (i = bounds[which - 1]; i < bounds[which]; i++)
613 {
614 uint32_t val = *(uint32_t *)(((char *) ptr) + specs[i].offset) ;
616 if (item_watched (i) && (val != 0))
617 submit_counter (dev, type_name, specs[i].name, mac, val);
619 if (item_summed (i))
620 misc += val;
621 }
623 if (misc != 0)
624 submit_counter (dev, type_name, misc_name, mac, misc);
626 }
628 static void
629 process_athstats (int sk, const char *dev)
630 {
631 struct ifreq ifr;
632 struct ath_stats stats;
634 sstrncpy (ifr.ifr_name, dev, sizeof (ifr.ifr_name));
635 ifr.ifr_data = (void *) &stats;
636 if (ioctl (sk, SIOCGATHSTATS, &ifr) < 0)
637 return;
639 /* These stats are handled as a special case, because they are
640 eight values each */
642 if (item_watched (STAT_AST_ANT_RX))
643 submit_antx (dev, "ast_ant_rx", stats.ast_ant_rx,
644 STATIC_ARRAY_SIZE (stats.ast_ant_rx));
646 if (item_watched (STAT_AST_ANT_TX))
647 submit_antx (dev, "ast_ant_tx", stats.ast_ant_tx,
648 STATIC_ARRAY_SIZE (stats.ast_ant_tx));
650 /* All other ath statistics */
651 process_stat_struct (ATH_STAT, &stats, dev, NULL, "ath_stat", "ast_misc");
652 }
654 static void
655 process_80211stats (int sk, const char *dev)
656 {
657 struct ifreq ifr;
658 struct ieee80211_stats stats;
659 sstrncpy (ifr.ifr_name, dev, sizeof (ifr.ifr_name));
660 ifr.ifr_data = (void *) &stats;
661 if (ioctl(sk, SIOCG80211STATS, &ifr) < 0)
662 return;
664 process_stat_struct (IFA_STAT, &stats, dev, NULL, "ath_stat", "is_misc");
665 }
668 static void
669 process_station (int sk, const char *dev, struct ieee80211req_sta_info *si)
670 {
671 struct iwreq iwr;
672 static char mac[DATA_MAX_NAME_LEN];
673 struct ieee80211req_sta_stats stats;
674 const struct ieee80211_nodestats *ns = &stats.is_stats;
676 macaddr_to_str (mac, sizeof (mac), si->isi_macaddr);
678 if (item_watched (STAT_NODE_TX_RATE))
679 submit_gauge (dev, "node_tx_rate", mac, NULL,
680 (si->isi_rates[si->isi_txrate] & IEEE80211_RATE_VAL) / 2);
682 if (item_watched (STAT_NODE_RSSI))
683 submit_gauge (dev, "node_rssi", mac, NULL, si->isi_rssi);
685 memset (&iwr, 0, sizeof (iwr));
686 sstrncpy(iwr.ifr_name, dev, sizeof (iwr.ifr_name));
687 iwr.u.data.pointer = (void *) &stats;
688 iwr.u.data.length = sizeof (stats);
689 memcpy(stats.is_u.macaddr, si->isi_macaddr, IEEE80211_ADDR_LEN);
690 if (ioctl(sk, IEEE80211_IOCTL_STA_STATS, &iwr) < 0)
691 return;
693 /* These two stats are handled as a special case as they are
694 a pair of 64bit values */
695 if (item_watched (STAT_NODE_OCTETS))
696 submit_counter2 (dev, "node_octets", mac, NULL,
697 ns->ns_rx_bytes, ns->ns_tx_bytes);
699 /* This stat is handled as a special case, because it is stored
700 as uin64_t, but we will ignore upper half */
701 if (item_watched (STAT_NS_RX_BEACONS))
702 submit_counter (dev, "node_stat", "ns_rx_beacons", mac,
703 (ns->ns_rx_beacons & 0xFFFFFFFF));
705 /* All other node statistics */
706 process_stat_struct (NOD_STAT, ns, dev, mac, "node_stat", "ns_misc");
707 }
709 static void
710 process_stations (int sk, const char *dev)
711 {
712 uint8_t buf[24*1024];
713 struct iwreq iwr;
714 uint8_t *cp;
715 int len, nodes;
716 int status;
718 memset (&iwr, 0, sizeof (iwr));
719 sstrncpy (iwr.ifr_name, dev, sizeof (iwr.ifr_name));
720 iwr.u.data.pointer = (void *) buf;
721 iwr.u.data.length = sizeof (buf);
723 status = ioctl (sk, IEEE80211_IOCTL_STA_INFO, &iwr);
724 if (status < 0)
725 {
726 ERROR ("madwifi plugin: Sending IO-control "
727 "IEEE80211_IOCTL_STA_INFO to device %s "
728 "failed with status %i.",
729 dev, status);
730 return;
731 }
733 len = iwr.u.data.length;
735 cp = buf;
736 nodes = 0;
737 while (len >= sizeof (struct ieee80211req_sta_info))
738 {
739 struct ieee80211req_sta_info *si = (void *) cp;
740 process_station(sk, dev, si);
741 cp += si->isi_len;
742 len -= si->isi_len;
743 nodes++;
744 }
746 if (item_watched (STAT_ATH_NODES))
747 submit_gauge (dev, "ath_nodes", NULL, NULL, nodes);
748 }
750 static void
751 process_device (int sk, const char *dev)
752 {
753 process_athstats (sk, dev);
754 process_80211stats (sk, dev);
755 process_stations (sk, dev);
756 }
758 static int
759 check_devname (const char *dev)
760 {
761 char buf[256];
762 char buf2[256];
763 int i;
765 if (dev[0] == '.')
766 return 0;
768 ssnprintf (buf, sizeof (buf), "/sys/class/net/%s/device/driver", dev);
769 buf[sizeof (buf) - 1] = 0;
771 i = readlink (buf, buf2, sizeof (buf2) - 1);
772 if (i < 0)
773 return 0;
774 buf2[sizeof (buf2) - 1] = 0;
776 if (strstr (buf2, "/drivers/ath_") == NULL)
777 return 0;
778 return 1;
779 }
781 static int
782 sysfs_iterate(int sk)
783 {
784 struct dirent *de;
786 DIR *nets = opendir ("/sys/class/net/");
787 if (nets == NULL)
788 {
789 WARNING ("madwifi plugin: opening /sys/class/net failed");
790 return (-1);
791 }
793 while ((de = readdir (nets)))
794 if (check_devname (de->d_name) &&
795 (ignorelist_match (ignorelist, de->d_name) == 0))
796 process_device (sk, de->d_name);
798 closedir(nets);
800 return 0;
801 }
803 static int
804 procfs_iterate(int sk)
805 {
806 char buffer[1024];
807 char *device, *dummy;
808 FILE *fh;
810 if ((fh = fopen ("/proc/net/dev", "r")) == NULL)
811 {
812 WARNING ("madwifi plugin: opening /proc/net/dev failed");
813 return (-1);
814 }
816 while (fgets (buffer, sizeof (buffer), fh) != NULL)
817 {
818 dummy = strchr(buffer, ':');
819 if (dummy == NULL)
820 continue;
821 dummy[0] = 0;
823 device = buffer;
824 while (device[0] == ' ')
825 device++;
827 if (device[0] == 0)
828 continue;
830 if (ignorelist_match (ignorelist, device) == 0)
831 process_device (sk, device);
832 }
834 fclose(fh);
835 return 0;
836 }
838 static int madwifi_read (void)
839 {
840 int rv;
841 int sk;
843 if (init_state == 0)
844 madwifi_real_init();
845 init_state = 2;
847 sk = socket(AF_INET, SOCK_DGRAM, 0);
848 if (sk < 0)
849 return (-1);
852 /* procfs iteration is not safe because it does not check whether given
853 interface is madwifi interface and there are private ioctls used, which
854 may do something completely different on non-madwifi devices.
855 Therefore, it is not used unless explicitly enabled (and should be used
856 together with ignorelist). */
858 if (use_sysfs)
859 rv = sysfs_iterate(sk);
860 else
861 rv = procfs_iterate(sk);
863 close(sk);
865 return rv;
866 }
868 void module_register (void)
869 {
870 plugin_register_config ("madwifi", madwifi_config,
871 config_keys, config_keys_num);
873 plugin_register_read ("madwifi", madwifi_read);
874 }