xref: /freebsd/sys/dev/ath/if_ath_sysctl.c (revision a9d2f8d84f69e98100b5746816b35666bcf992ac)
1 /*-
2  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification.
11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
13  *    redistribution must be conditioned upon including a substantially
14  *    similar Disclaimer requirement for further binary redistribution.
15  *
16  * NO WARRANTY
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27  * THE POSSIBILITY OF SUCH DAMAGES.
28  */
29 
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 
33 /*
34  * Driver for the Atheros Wireless LAN controller.
35  *
36  * This software is derived from work of Atsushi Onoe; his contribution
37  * is greatly appreciated.
38  */
39 
40 #include "opt_inet.h"
41 #include "opt_ath.h"
42 #include "opt_wlan.h"
43 
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/sysctl.h>
47 #include <sys/mbuf.h>
48 #include <sys/malloc.h>
49 #include <sys/lock.h>
50 #include <sys/mutex.h>
51 #include <sys/kernel.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54 #include <sys/errno.h>
55 #include <sys/callout.h>
56 #include <sys/bus.h>
57 #include <sys/endian.h>
58 #include <sys/kthread.h>
59 #include <sys/taskqueue.h>
60 #include <sys/priv.h>
61 
62 #include <machine/bus.h>
63 
64 #include <net/if.h>
65 #include <net/if_dl.h>
66 #include <net/if_media.h>
67 #include <net/if_types.h>
68 #include <net/if_arp.h>
69 #include <net/ethernet.h>
70 #include <net/if_llc.h>
71 
72 #include <net80211/ieee80211_var.h>
73 #include <net80211/ieee80211_regdomain.h>
74 #ifdef IEEE80211_SUPPORT_SUPERG
75 #include <net80211/ieee80211_superg.h>
76 #endif
77 #ifdef IEEE80211_SUPPORT_TDMA
78 #include <net80211/ieee80211_tdma.h>
79 #endif
80 
81 #include <net/bpf.h>
82 
83 #ifdef INET
84 #include <netinet/in.h>
85 #include <netinet/if_ether.h>
86 #endif
87 
88 #include <dev/ath/if_athvar.h>
89 #include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
90 #include <dev/ath/ath_hal/ah_diagcodes.h>
91 
92 #include <dev/ath/if_ath_debug.h>
93 #include <dev/ath/if_ath_misc.h>
94 #include <dev/ath/if_ath_tx.h>
95 #include <dev/ath/if_ath_sysctl.h>
96 
97 #ifdef ATH_TX99_DIAG
98 #include <dev/ath/ath_tx99/ath_tx99.h>
99 #endif
100 
101 static int
102 ath_sysctl_slottime(SYSCTL_HANDLER_ARGS)
103 {
104 	struct ath_softc *sc = arg1;
105 	u_int slottime = ath_hal_getslottime(sc->sc_ah);
106 	int error;
107 
108 	error = sysctl_handle_int(oidp, &slottime, 0, req);
109 	if (error || !req->newptr)
110 		return error;
111 	return !ath_hal_setslottime(sc->sc_ah, slottime) ? EINVAL : 0;
112 }
113 
114 static int
115 ath_sysctl_acktimeout(SYSCTL_HANDLER_ARGS)
116 {
117 	struct ath_softc *sc = arg1;
118 	u_int acktimeout = ath_hal_getacktimeout(sc->sc_ah);
119 	int error;
120 
121 	error = sysctl_handle_int(oidp, &acktimeout, 0, req);
122 	if (error || !req->newptr)
123 		return error;
124 	return !ath_hal_setacktimeout(sc->sc_ah, acktimeout) ? EINVAL : 0;
125 }
126 
127 static int
128 ath_sysctl_ctstimeout(SYSCTL_HANDLER_ARGS)
129 {
130 	struct ath_softc *sc = arg1;
131 	u_int ctstimeout = ath_hal_getctstimeout(sc->sc_ah);
132 	int error;
133 
134 	error = sysctl_handle_int(oidp, &ctstimeout, 0, req);
135 	if (error || !req->newptr)
136 		return error;
137 	return !ath_hal_setctstimeout(sc->sc_ah, ctstimeout) ? EINVAL : 0;
138 }
139 
140 static int
141 ath_sysctl_softled(SYSCTL_HANDLER_ARGS)
142 {
143 	struct ath_softc *sc = arg1;
144 	int softled = sc->sc_softled;
145 	int error;
146 
147 	error = sysctl_handle_int(oidp, &softled, 0, req);
148 	if (error || !req->newptr)
149 		return error;
150 	softled = (softled != 0);
151 	if (softled != sc->sc_softled) {
152 		if (softled) {
153 			/* NB: handle any sc_ledpin change */
154 			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_ledpin,
155 			    HAL_GPIO_MUX_MAC_NETWORK_LED);
156 			ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin,
157 				!sc->sc_ledon);
158 		}
159 		sc->sc_softled = softled;
160 	}
161 	return 0;
162 }
163 
164 static int
165 ath_sysctl_ledpin(SYSCTL_HANDLER_ARGS)
166 {
167 	struct ath_softc *sc = arg1;
168 	int ledpin = sc->sc_ledpin;
169 	int error;
170 
171 	error = sysctl_handle_int(oidp, &ledpin, 0, req);
172 	if (error || !req->newptr)
173 		return error;
174 	if (ledpin != sc->sc_ledpin) {
175 		sc->sc_ledpin = ledpin;
176 		if (sc->sc_softled) {
177 			ath_hal_gpioCfgOutput(sc->sc_ah, sc->sc_ledpin,
178 			    HAL_GPIO_MUX_MAC_NETWORK_LED);
179 			ath_hal_gpioset(sc->sc_ah, sc->sc_ledpin,
180 				!sc->sc_ledon);
181 		}
182 	}
183 	return 0;
184 }
185 
186 static int
187 ath_sysctl_txantenna(SYSCTL_HANDLER_ARGS)
188 {
189 	struct ath_softc *sc = arg1;
190 	u_int txantenna = ath_hal_getantennaswitch(sc->sc_ah);
191 	int error;
192 
193 	error = sysctl_handle_int(oidp, &txantenna, 0, req);
194 	if (!error && req->newptr) {
195 		/* XXX assumes 2 antenna ports */
196 		if (txantenna < HAL_ANT_VARIABLE || txantenna > HAL_ANT_FIXED_B)
197 			return EINVAL;
198 		ath_hal_setantennaswitch(sc->sc_ah, txantenna);
199 		/*
200 		 * NB: with the switch locked this isn't meaningful,
201 		 *     but set it anyway so things like radiotap get
202 		 *     consistent info in their data.
203 		 */
204 		sc->sc_txantenna = txantenna;
205 	}
206 	return error;
207 }
208 
209 static int
210 ath_sysctl_rxantenna(SYSCTL_HANDLER_ARGS)
211 {
212 	struct ath_softc *sc = arg1;
213 	u_int defantenna = ath_hal_getdefantenna(sc->sc_ah);
214 	int error;
215 
216 	error = sysctl_handle_int(oidp, &defantenna, 0, req);
217 	if (!error && req->newptr)
218 		ath_hal_setdefantenna(sc->sc_ah, defantenna);
219 	return error;
220 }
221 
222 static int
223 ath_sysctl_diversity(SYSCTL_HANDLER_ARGS)
224 {
225 	struct ath_softc *sc = arg1;
226 	u_int diversity = ath_hal_getdiversity(sc->sc_ah);
227 	int error;
228 
229 	error = sysctl_handle_int(oidp, &diversity, 0, req);
230 	if (error || !req->newptr)
231 		return error;
232 	if (!ath_hal_setdiversity(sc->sc_ah, diversity))
233 		return EINVAL;
234 	sc->sc_diversity = diversity;
235 	return 0;
236 }
237 
238 static int
239 ath_sysctl_diag(SYSCTL_HANDLER_ARGS)
240 {
241 	struct ath_softc *sc = arg1;
242 	u_int32_t diag;
243 	int error;
244 
245 	if (!ath_hal_getdiag(sc->sc_ah, &diag))
246 		return EINVAL;
247 	error = sysctl_handle_int(oidp, &diag, 0, req);
248 	if (error || !req->newptr)
249 		return error;
250 	return !ath_hal_setdiag(sc->sc_ah, diag) ? EINVAL : 0;
251 }
252 
253 static int
254 ath_sysctl_tpscale(SYSCTL_HANDLER_ARGS)
255 {
256 	struct ath_softc *sc = arg1;
257 	struct ifnet *ifp = sc->sc_ifp;
258 	u_int32_t scale;
259 	int error;
260 
261 	(void) ath_hal_gettpscale(sc->sc_ah, &scale);
262 	error = sysctl_handle_int(oidp, &scale, 0, req);
263 	if (error || !req->newptr)
264 		return error;
265 	return !ath_hal_settpscale(sc->sc_ah, scale) ? EINVAL :
266 	    (ifp->if_drv_flags & IFF_DRV_RUNNING) ? ath_reset(ifp) : 0;
267 }
268 
269 static int
270 ath_sysctl_tpc(SYSCTL_HANDLER_ARGS)
271 {
272 	struct ath_softc *sc = arg1;
273 	u_int tpc = ath_hal_gettpc(sc->sc_ah);
274 	int error;
275 
276 	error = sysctl_handle_int(oidp, &tpc, 0, req);
277 	if (error || !req->newptr)
278 		return error;
279 	return !ath_hal_settpc(sc->sc_ah, tpc) ? EINVAL : 0;
280 }
281 
282 static int
283 ath_sysctl_rfkill(SYSCTL_HANDLER_ARGS)
284 {
285 	struct ath_softc *sc = arg1;
286 	struct ifnet *ifp = sc->sc_ifp;
287 	struct ath_hal *ah = sc->sc_ah;
288 	u_int rfkill = ath_hal_getrfkill(ah);
289 	int error;
290 
291 	error = sysctl_handle_int(oidp, &rfkill, 0, req);
292 	if (error || !req->newptr)
293 		return error;
294 	if (rfkill == ath_hal_getrfkill(ah))	/* unchanged */
295 		return 0;
296 	if (!ath_hal_setrfkill(ah, rfkill))
297 		return EINVAL;
298 	return (ifp->if_drv_flags & IFF_DRV_RUNNING) ? ath_reset(ifp) : 0;
299 }
300 
301 static int
302 ath_sysctl_rfsilent(SYSCTL_HANDLER_ARGS)
303 {
304 	struct ath_softc *sc = arg1;
305 	u_int rfsilent;
306 	int error;
307 
308 	(void) ath_hal_getrfsilent(sc->sc_ah, &rfsilent);
309 	error = sysctl_handle_int(oidp, &rfsilent, 0, req);
310 	if (error || !req->newptr)
311 		return error;
312 	if (!ath_hal_setrfsilent(sc->sc_ah, rfsilent))
313 		return EINVAL;
314 	sc->sc_rfsilentpin = rfsilent & 0x1c;
315 	sc->sc_rfsilentpol = (rfsilent & 0x2) != 0;
316 	return 0;
317 }
318 
319 static int
320 ath_sysctl_tpack(SYSCTL_HANDLER_ARGS)
321 {
322 	struct ath_softc *sc = arg1;
323 	u_int32_t tpack;
324 	int error;
325 
326 	(void) ath_hal_gettpack(sc->sc_ah, &tpack);
327 	error = sysctl_handle_int(oidp, &tpack, 0, req);
328 	if (error || !req->newptr)
329 		return error;
330 	return !ath_hal_settpack(sc->sc_ah, tpack) ? EINVAL : 0;
331 }
332 
333 static int
334 ath_sysctl_tpcts(SYSCTL_HANDLER_ARGS)
335 {
336 	struct ath_softc *sc = arg1;
337 	u_int32_t tpcts;
338 	int error;
339 
340 	(void) ath_hal_gettpcts(sc->sc_ah, &tpcts);
341 	error = sysctl_handle_int(oidp, &tpcts, 0, req);
342 	if (error || !req->newptr)
343 		return error;
344 	return !ath_hal_settpcts(sc->sc_ah, tpcts) ? EINVAL : 0;
345 }
346 
347 static int
348 ath_sysctl_intmit(SYSCTL_HANDLER_ARGS)
349 {
350 	struct ath_softc *sc = arg1;
351 	int intmit, error;
352 
353 	intmit = ath_hal_getintmit(sc->sc_ah);
354 	error = sysctl_handle_int(oidp, &intmit, 0, req);
355 	if (error || !req->newptr)
356 		return error;
357 
358 	/* reusing error; 1 here means "good"; 0 means "fail" */
359 	error = ath_hal_setintmit(sc->sc_ah, intmit);
360 	if (! error)
361 		return EINVAL;
362 
363 	/*
364 	 * Reset the hardware here - disabling ANI in the HAL
365 	 * doesn't reset ANI related registers, so it'll leave
366 	 * things in an inconsistent state.
367 	 */
368 	if (sc->sc_ifp->if_drv_flags & IFF_DRV_RUNNING)
369 		ath_reset(sc->sc_ifp);
370 
371 	return 0;
372 }
373 
374 #ifdef IEEE80211_SUPPORT_TDMA
375 static int
376 ath_sysctl_setcca(SYSCTL_HANDLER_ARGS)
377 {
378 	struct ath_softc *sc = arg1;
379 	int setcca, error;
380 
381 	setcca = sc->sc_setcca;
382 	error = sysctl_handle_int(oidp, &setcca, 0, req);
383 	if (error || !req->newptr)
384 		return error;
385 	sc->sc_setcca = (setcca != 0);
386 	return 0;
387 }
388 #endif /* IEEE80211_SUPPORT_TDMA */
389 
390 void
391 ath_sysctlattach(struct ath_softc *sc)
392 {
393 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
394 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
395 	struct ath_hal *ah = sc->sc_ah;
396 
397 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
398 		"countrycode", CTLFLAG_RD, &sc->sc_eecc, 0,
399 		"EEPROM country code");
400 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
401 		"regdomain", CTLFLAG_RD, &sc->sc_eerd, 0,
402 		"EEPROM regdomain code");
403 #ifdef	ATH_DEBUG
404 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
405 		"debug", CTLFLAG_RW, &sc->sc_debug, 0,
406 		"control debugging printfs");
407 #endif
408 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
409 		"slottime", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
410 		ath_sysctl_slottime, "I", "802.11 slot time (us)");
411 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
412 		"acktimeout", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
413 		ath_sysctl_acktimeout, "I", "802.11 ACK timeout (us)");
414 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
415 		"ctstimeout", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
416 		ath_sysctl_ctstimeout, "I", "802.11 CTS timeout (us)");
417 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
418 		"softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
419 		ath_sysctl_softled, "I", "enable/disable software LED support");
420 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
421 		"ledpin", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
422 		ath_sysctl_ledpin, "I", "GPIO pin connected to LED");
423 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
424 		"ledon", CTLFLAG_RW, &sc->sc_ledon, 0,
425 		"setting to turn LED on");
426 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
427 		"ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0,
428 		"idle time for inactivity LED (ticks)");
429 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
430 		"txantenna", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
431 		ath_sysctl_txantenna, "I", "antenna switch");
432 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
433 		"rxantenna", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
434 		ath_sysctl_rxantenna, "I", "default/rx antenna");
435 	if (ath_hal_hasdiversity(ah))
436 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
437 			"diversity", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
438 			ath_sysctl_diversity, "I", "antenna diversity");
439 	sc->sc_txintrperiod = ATH_TXINTR_PERIOD;
440 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
441 		"txintrperiod", CTLFLAG_RW, &sc->sc_txintrperiod, 0,
442 		"tx descriptor batching");
443 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
444 		"diag", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
445 		ath_sysctl_diag, "I", "h/w diagnostic control");
446 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
447 		"tpscale", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
448 		ath_sysctl_tpscale, "I", "tx power scaling");
449 	if (ath_hal_hastpc(ah)) {
450 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
451 			"tpc", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
452 			ath_sysctl_tpc, "I", "enable/disable per-packet TPC");
453 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
454 			"tpack", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
455 			ath_sysctl_tpack, "I", "tx power for ack frames");
456 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
457 			"tpcts", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
458 			ath_sysctl_tpcts, "I", "tx power for cts frames");
459 	}
460 	if (ath_hal_hasrfsilent(ah)) {
461 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
462 			"rfsilent", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
463 			ath_sysctl_rfsilent, "I", "h/w RF silent config");
464 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
465 			"rfkill", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
466 			ath_sysctl_rfkill, "I", "enable/disable RF kill switch");
467 	}
468 	if (ath_hal_hasintmit(ah)) {
469 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
470 			"intmit", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
471 			ath_sysctl_intmit, "I", "interference mitigation");
472 	}
473 	sc->sc_monpass = HAL_RXERR_DECRYPT | HAL_RXERR_MIC;
474 	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
475 		"monpass", CTLFLAG_RW, &sc->sc_monpass, 0,
476 		"mask of error frames to pass when monitoring");
477 #ifdef IEEE80211_SUPPORT_TDMA
478 	if (ath_hal_macversion(ah) > 0x78) {
479 		sc->sc_tdmadbaprep = 2;
480 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
481 			"dbaprep", CTLFLAG_RW, &sc->sc_tdmadbaprep, 0,
482 			"TDMA DBA preparation time");
483 		sc->sc_tdmaswbaprep = 10;
484 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
485 			"swbaprep", CTLFLAG_RW, &sc->sc_tdmaswbaprep, 0,
486 			"TDMA SWBA preparation time");
487 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
488 			"guardtime", CTLFLAG_RW, &sc->sc_tdmaguard, 0,
489 			"TDMA slot guard time");
490 		SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
491 			"superframe", CTLFLAG_RD, &sc->sc_tdmabintval, 0,
492 			"TDMA calculated super frame");
493 		SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
494 			"setcca", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
495 			ath_sysctl_setcca, "I", "enable CCA control");
496 	}
497 #endif
498 }
499 
500 static int
501 ath_sysctl_clearstats(SYSCTL_HANDLER_ARGS)
502 {
503 	struct ath_softc *sc = arg1;
504 	int val = 0;
505 	int error;
506 
507 	error = sysctl_handle_int(oidp, &val, 0, req);
508 	if (error || !req->newptr)
509 		return error;
510 	if (val == 0)
511 		return 0;       /* Not clearing the stats is still valid */
512 	memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
513 	val = 0;
514 	return 0;
515 }
516 
517 static void
518 ath_sysctl_stats_attach_rxphyerr(struct ath_softc *sc, struct sysctl_oid_list *parent)
519 {
520 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
521 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
522 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
523 	int i;
524 	char sn[8];
525 
526 	tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx_phy_err", CTLFLAG_RD, NULL, "Per-code RX PHY Errors");
527 	child = SYSCTL_CHILDREN(tree);
528 	for (i = 0; i < 64; i++) {
529 		snprintf(sn, sizeof(sn), "%d", i);
530 		SYSCTL_ADD_UINT(ctx, child, OID_AUTO, sn, CTLFLAG_RD, &sc->sc_stats.ast_rx_phy[i], 0, "");
531 	}
532 }
533 
534 void
535 ath_sysctl_stats_attach(struct ath_softc *sc)
536 {
537 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
538 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
539 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
540 
541 	/* Create "clear" node */
542 	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
543 	    "clear_stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
544 	    ath_sysctl_clearstats, "I", "clear stats");
545 
546 	/* Create stats node */
547 	tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
548 	    NULL, "Statistics");
549 	child = SYSCTL_CHILDREN(tree);
550 
551 	/* This was generated from if_athioctl.h */
552 
553 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_watchdog", CTLFLAG_RD,
554 	    &sc->sc_stats.ast_watchdog, 0, "device reset by watchdog");
555 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_hardware", CTLFLAG_RD,
556 	    &sc->sc_stats.ast_hardware, 0, "fatal hardware error interrupts");
557 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss", CTLFLAG_RD,
558 	    &sc->sc_stats.ast_bmiss, 0, "beacon miss interrupts");
559 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bmiss_phantom", CTLFLAG_RD,
560 	    &sc->sc_stats.ast_bmiss_phantom, 0, "beacon miss interrupts");
561 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_bstuck", CTLFLAG_RD,
562 	    &sc->sc_stats.ast_bstuck, 0, "beacon stuck interrupts");
563 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxorn", CTLFLAG_RD,
564 	    &sc->sc_stats.ast_rxorn, 0, "rx overrun interrupts");
565 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rxeol", CTLFLAG_RD,
566 	    &sc->sc_stats.ast_rxeol, 0, "rx eol interrupts");
567 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_txurn", CTLFLAG_RD,
568 	    &sc->sc_stats.ast_txurn, 0, "tx underrun interrupts");
569 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_mib", CTLFLAG_RD,
570 	    &sc->sc_stats.ast_mib, 0, "mib interrupts");
571 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_intrcoal", CTLFLAG_RD,
572 	    &sc->sc_stats.ast_intrcoal, 0, "interrupts coalesced");
573 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_packets", CTLFLAG_RD,
574 	    &sc->sc_stats.ast_tx_packets, 0, "packet sent on the interface");
575 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_mgmt", CTLFLAG_RD,
576 	    &sc->sc_stats.ast_tx_mgmt, 0, "management frames transmitted");
577 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_discard", CTLFLAG_RD,
578 	    &sc->sc_stats.ast_tx_discard, 0, "frames discarded prior to assoc");
579 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qstop", CTLFLAG_RD,
580 	    &sc->sc_stats.ast_tx_qstop, 0, "output stopped 'cuz no buffer");
581 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_encap", CTLFLAG_RD,
582 	    &sc->sc_stats.ast_tx_encap, 0, "tx encapsulation failed");
583 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nonode", CTLFLAG_RD,
584 	    &sc->sc_stats.ast_tx_nonode, 0, "tx failed 'cuz no node");
585 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nombuf", CTLFLAG_RD,
586 	    &sc->sc_stats.ast_tx_nombuf, 0, "tx failed 'cuz no mbuf");
587 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nomcl", CTLFLAG_RD,
588 	    &sc->sc_stats.ast_tx_nomcl, 0, "tx failed 'cuz no cluster");
589 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_linear", CTLFLAG_RD,
590 	    &sc->sc_stats.ast_tx_linear, 0, "tx linearized to cluster");
591 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nodata", CTLFLAG_RD,
592 	    &sc->sc_stats.ast_tx_nodata, 0, "tx discarded empty frame");
593 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_busdma", CTLFLAG_RD,
594 	    &sc->sc_stats.ast_tx_busdma, 0, "tx failed for dma resrcs");
595 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xretries", CTLFLAG_RD,
596 	    &sc->sc_stats.ast_tx_xretries, 0, "tx failed 'cuz too many retries");
597 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_fifoerr", CTLFLAG_RD,
598 	    &sc->sc_stats.ast_tx_fifoerr, 0, "tx failed 'cuz FIFO underrun");
599 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_filtered", CTLFLAG_RD,
600 	    &sc->sc_stats.ast_tx_filtered, 0, "tx failed 'cuz xmit filtered");
601 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortretry", CTLFLAG_RD,
602 	    &sc->sc_stats.ast_tx_shortretry, 0, "tx on-chip retries (short)");
603 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_longretry", CTLFLAG_RD,
604 	    &sc->sc_stats.ast_tx_longretry, 0, "tx on-chip retries (long)");
605 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_badrate", CTLFLAG_RD,
606 	    &sc->sc_stats.ast_tx_badrate, 0, "tx failed 'cuz bogus xmit rate");
607 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_noack", CTLFLAG_RD,
608 	    &sc->sc_stats.ast_tx_noack, 0, "tx frames with no ack marked");
609 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_rts", CTLFLAG_RD,
610 	    &sc->sc_stats.ast_tx_rts, 0, "tx frames with rts enabled");
611 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cts", CTLFLAG_RD,
612 	    &sc->sc_stats.ast_tx_cts, 0, "tx frames with cts enabled");
613 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_shortpre", CTLFLAG_RD,
614 	    &sc->sc_stats.ast_tx_shortpre, 0, "tx frames with short preamble");
615 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_altrate", CTLFLAG_RD,
616 	    &sc->sc_stats.ast_tx_altrate, 0, "tx frames with alternate rate");
617 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_protect", CTLFLAG_RD,
618 	    &sc->sc_stats.ast_tx_protect, 0, "tx frames with protection");
619 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsburst", CTLFLAG_RD,
620 	    &sc->sc_stats.ast_tx_ctsburst, 0, "tx frames with cts and bursting");
621 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_ctsext", CTLFLAG_RD,
622 	    &sc->sc_stats.ast_tx_ctsext, 0, "tx frames with cts extension");
623 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_nombuf", CTLFLAG_RD,
624 	    &sc->sc_stats.ast_rx_nombuf, 0, "rx setup failed 'cuz no mbuf");
625 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_busdma", CTLFLAG_RD,
626 	    &sc->sc_stats.ast_rx_busdma, 0, "rx setup failed for dma resrcs");
627 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_orn", CTLFLAG_RD,
628 	    &sc->sc_stats.ast_rx_orn, 0, "rx failed 'cuz of desc overrun");
629 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_crcerr", CTLFLAG_RD,
630 	    &sc->sc_stats.ast_rx_crcerr, 0, "rx failed 'cuz of bad CRC");
631 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_fifoerr", CTLFLAG_RD,
632 	    &sc->sc_stats.ast_rx_fifoerr, 0, "rx failed 'cuz of FIFO overrun");
633 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badcrypt", CTLFLAG_RD,
634 	    &sc->sc_stats.ast_rx_badcrypt, 0, "rx failed 'cuz decryption");
635 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_badmic", CTLFLAG_RD,
636 	    &sc->sc_stats.ast_rx_badmic, 0, "rx failed 'cuz MIC failure");
637 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_phyerr", CTLFLAG_RD,
638 	    &sc->sc_stats.ast_rx_phyerr, 0, "rx failed 'cuz of PHY err");
639 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_tooshort", CTLFLAG_RD,
640 	    &sc->sc_stats.ast_rx_tooshort, 0, "rx discarded 'cuz frame too short");
641 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_toobig", CTLFLAG_RD,
642 	    &sc->sc_stats.ast_rx_toobig, 0, "rx discarded 'cuz frame too large");
643 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_packets", CTLFLAG_RD,
644 	    &sc->sc_stats.ast_rx_packets, 0, "packet recv on the interface");
645 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_mgt", CTLFLAG_RD,
646 	    &sc->sc_stats.ast_rx_mgt, 0, "management frames received");
647 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_ctl", CTLFLAG_RD,
648 	    &sc->sc_stats.ast_rx_ctl, 0, "rx discarded 'cuz ctl frame");
649 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_xmit", CTLFLAG_RD,
650 	    &sc->sc_stats.ast_be_xmit, 0, "beacons transmitted");
651 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_nombuf", CTLFLAG_RD,
652 	    &sc->sc_stats.ast_be_nombuf, 0, "beacon setup failed 'cuz no mbuf");
653 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_cal", CTLFLAG_RD,
654 	    &sc->sc_stats.ast_per_cal, 0, "periodic calibration calls");
655 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_calfail", CTLFLAG_RD,
656 	    &sc->sc_stats.ast_per_calfail, 0, "periodic calibration failed");
657 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_per_rfgain", CTLFLAG_RD,
658 	    &sc->sc_stats.ast_per_rfgain, 0, "periodic calibration rfgain reset");
659 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_calls", CTLFLAG_RD,
660 	    &sc->sc_stats.ast_rate_calls, 0, "rate control checks");
661 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_raise", CTLFLAG_RD,
662 	    &sc->sc_stats.ast_rate_raise, 0, "rate control raised xmit rate");
663 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rate_drop", CTLFLAG_RD,
664 	    &sc->sc_stats.ast_rate_drop, 0, "rate control dropped xmit rate");
665 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_defswitch", CTLFLAG_RD,
666 	    &sc->sc_stats.ast_ant_defswitch, 0, "rx/default antenna switches");
667 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ant_txswitch", CTLFLAG_RD,
668 	    &sc->sc_stats.ast_ant_txswitch, 0, "tx antenna switches");
669 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_xmit", CTLFLAG_RD,
670 	    &sc->sc_stats.ast_cabq_xmit, 0, "cabq frames transmitted");
671 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_cabq_busy", CTLFLAG_RD,
672 	    &sc->sc_stats.ast_cabq_busy, 0, "cabq found busy");
673 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw", CTLFLAG_RD,
674 	    &sc->sc_stats.ast_tx_raw, 0, "tx frames through raw api");
675 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txok", CTLFLAG_RD,
676 	    &sc->sc_stats.ast_ff_txok, 0, "fast frames tx'd successfully");
677 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_txerr", CTLFLAG_RD,
678 	    &sc->sc_stats.ast_ff_txerr, 0, "fast frames tx'd w/ error");
679 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_rx", CTLFLAG_RD,
680 	    &sc->sc_stats.ast_ff_rx, 0, "fast frames rx'd");
681 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ff_flush", CTLFLAG_RD,
682 	    &sc->sc_stats.ast_ff_flush, 0, "fast frames flushed from staging q");
683 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_qfull", CTLFLAG_RD,
684 	    &sc->sc_stats.ast_tx_qfull, 0, "tx dropped 'cuz of queue limit");
685 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nobuf", CTLFLAG_RD,
686 	    &sc->sc_stats.ast_tx_nobuf, 0, "tx dropped 'cuz no ath buffer");
687 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_update", CTLFLAG_RD,
688 	    &sc->sc_stats.ast_tdma_update, 0, "TDMA slot timing updates");
689 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_timers", CTLFLAG_RD,
690 	    &sc->sc_stats.ast_tdma_timers, 0, "TDMA slot update set beacon timers");
691 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_tsf", CTLFLAG_RD,
692 	    &sc->sc_stats.ast_tdma_tsf, 0, "TDMA slot update set TSF");
693 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tdma_ack", CTLFLAG_RD,
694 	    &sc->sc_stats.ast_tdma_ack, 0, "TDMA tx failed 'cuz ACK required");
695 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_raw_fail", CTLFLAG_RD,
696 	    &sc->sc_stats.ast_tx_raw_fail, 0, "raw tx failed 'cuz h/w down");
697 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_nofrag", CTLFLAG_RD,
698 	    &sc->sc_stats.ast_tx_nofrag, 0, "tx dropped 'cuz no ath frag buffer");
699 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_be_missed", CTLFLAG_RD,
700 	    &sc->sc_stats.ast_be_missed, 0, "number of -missed- beacons");
701 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_ani_cal", CTLFLAG_RD,
702 	    &sc->sc_stats.ast_ani_cal, 0, "number of ANI polls");
703 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_agg", CTLFLAG_RD,
704 	    &sc->sc_stats.ast_rx_agg, 0, "number of aggregate frames received");
705 
706 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_halfgi", CTLFLAG_RD,
707 	    &sc->sc_stats.ast_rx_halfgi, 0, "number of frames received with half-GI");
708 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_2040", CTLFLAG_RD,
709 	    &sc->sc_stats.ast_rx_2040, 0, "number of HT/40 frames received");
710 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_pre_crc_err", CTLFLAG_RD,
711 	    &sc->sc_stats.ast_rx_pre_crc_err, 0, "number of delimeter-CRC errors detected");
712 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_post_crc_err", CTLFLAG_RD,
713 	    &sc->sc_stats.ast_rx_post_crc_err, 0, "number of post-delimiter CRC errors detected");
714 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_decrypt_busy_err", CTLFLAG_RD,
715 	    &sc->sc_stats.ast_rx_decrypt_busy_err, 0, "number of frames received w/ busy decrypt engine");
716 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hi_rx_chain", CTLFLAG_RD,
717 	    &sc->sc_stats.ast_rx_hi_rx_chain, 0, "");
718 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_htprotect", CTLFLAG_RD,
719 	    &sc->sc_stats.ast_tx_htprotect, 0, "HT tx frames with protection");
720 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_rx_hitqueueend", CTLFLAG_RD,
721 	    &sc->sc_stats.ast_rx_hitqueueend, 0, "RX hit queue end");
722 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timeout", CTLFLAG_RD,
723 	    &sc->sc_stats.ast_tx_timeout, 0, "TX Global Timeout");
724 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_cst", CTLFLAG_RD,
725 	    &sc->sc_stats.ast_tx_cst, 0, "TX Carrier Sense Timeout");
726 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_xtxop", CTLFLAG_RD,
727 	    &sc->sc_stats.ast_tx_xtxop, 0, "TX exceeded TXOP");
728 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_timerexpired", CTLFLAG_RD,
729 	    &sc->sc_stats.ast_tx_timerexpired, 0, "TX exceeded TX_TIMER register");
730 	SYSCTL_ADD_UINT(ctx, child, OID_AUTO, "ast_tx_desccfgerr", CTLFLAG_RD,
731 	    &sc->sc_stats.ast_tx_desccfgerr, 0, "TX Descriptor Cfg Error");
732 
733 	/* Attach the RX phy error array */
734 	ath_sysctl_stats_attach_rxphyerr(sc, child);
735 }
736 
737 /*
738  * This doesn't necessarily belong here (because it's HAL related, not
739  * driver related).
740  */
741 void
742 ath_sysctl_hal_attach(struct ath_softc *sc)
743 {
744 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
745 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
746 	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);
747 
748 	tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hal", CTLFLAG_RD,
749 	    NULL, "Atheros HAL parameters");
750 	child = SYSCTL_CHILDREN(tree);
751 
752 	sc->sc_ah->ah_config.ah_debug = 0;
753 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "debug", CTLFLAG_RW,
754 	    &sc->sc_ah->ah_config.ah_debug, 0, "Atheros HAL debugging printfs");
755 
756 	sc->sc_ah->ah_config.ah_ar5416_biasadj = 0;
757 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "ar5416_biasadj", CTLFLAG_RW,
758 	    &sc->sc_ah->ah_config.ah_ar5416_biasadj, 0,
759 	    "Enable 2ghz AR5416 direction sensitivity bias adjust");
760 
761 	sc->sc_ah->ah_config.ah_dma_beacon_response_time = 2;
762 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "dma_brt", CTLFLAG_RW,
763 	    &sc->sc_ah->ah_config.ah_dma_beacon_response_time, 0,
764 	    "Atheros HAL DMA beacon response time");
765 
766 	sc->sc_ah->ah_config.ah_sw_beacon_response_time = 10;
767 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "sw_brt", CTLFLAG_RW,
768 	    &sc->sc_ah->ah_config.ah_sw_beacon_response_time, 0,
769 	    "Atheros HAL software beacon response time");
770 
771 	sc->sc_ah->ah_config.ah_additional_swba_backoff = 0;
772 	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "swba_backoff", CTLFLAG_RW,
773 	    &sc->sc_ah->ah_config.ah_additional_swba_backoff, 0,
774 	    "Atheros HAL additional SWBA backoff time");
775 }
776