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: stable/11/sys/dev/ath/if_ath_ioctl.c 332303 2018-04-08 20:50:16Z emaste $");
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/*
43 * This is needed for register operations which are performed
44 * by the driver - eg, calls to ath_hal_gettsf32().
45 *
46 * It's also required for any AH_DEBUG checks in here, eg the
47 * module dependencies.
48 */
49#include "opt_ah.h"
50#include "opt_wlan.h"
51
52#include <sys/param.h>
53#include <sys/systm.h>
54#include <sys/sysctl.h>
55#include <sys/mbuf.h>
56#include <sys/malloc.h>
57#include <sys/lock.h>
58#include <sys/mutex.h>
59#include <sys/kernel.h>
60#include <sys/socket.h>
61#include <sys/sockio.h>
62#include <sys/errno.h>
63#include <sys/callout.h>
64#include <sys/bus.h>
65#include <sys/endian.h>
66#include <sys/kthread.h>
67#include <sys/taskqueue.h>
68#include <sys/priv.h>
69#include <sys/module.h>
70#include <sys/ktr.h>
71#include <sys/smp.h>	/* for mp_ncpus */
72
73#include <machine/bus.h>
74
75#include <net/if.h>
76#include <net/if_var.h>
77#include <net/if_dl.h>
78#include <net/if_media.h>
79#include <net/if_types.h>
80#include <net/if_arp.h>
81#include <net/ethernet.h>
82#include <net/if_llc.h>
83
84#include <net80211/ieee80211_var.h>
85#include <net80211/ieee80211_regdomain.h>
86#ifdef IEEE80211_SUPPORT_SUPERG
87#include <net80211/ieee80211_superg.h>
88#endif
89#ifdef IEEE80211_SUPPORT_TDMA
90#include <net80211/ieee80211_tdma.h>
91#endif
92
93#include <net/bpf.h>
94
95#ifdef INET
96#include <netinet/in.h>
97#include <netinet/if_ether.h>
98#endif
99
100#include <dev/ath/if_athvar.h>
101#include <dev/ath/ath_hal/ah_devid.h>		/* XXX for softled */
102#include <dev/ath/ath_hal/ah_diagcodes.h>
103
104#include <dev/ath/if_ath_debug.h>
105#include <dev/ath/if_ath_misc.h>
106#include <dev/ath/if_ath_btcoex.h>
107#include <dev/ath/if_ath_spectral.h>
108#include <dev/ath/if_ath_lna_div.h>
109#include <dev/ath/if_athdfs.h>
110
111#ifdef	IEEE80211_SUPPORT_TDMA
112#include <dev/ath/if_ath_tdma.h>
113#endif
114
115#include <dev/ath/if_ath_ioctl.h>
116
117/*
118 * ioctl() related pieces.
119 *
120 * Some subsystems (eg spectral, dfs) have their own ioctl method which
121 * we call.
122 */
123
124/*
125 * Fetch the rate control statistics for the given node.
126 */
127static int
128ath_ioctl_ratestats(struct ath_softc *sc, struct ath_rateioctl *rs)
129{
130	struct ath_node *an;
131	struct ieee80211com *ic = &sc->sc_ic;
132	struct ieee80211_node *ni;
133	int error = 0;
134
135	/* Perform a lookup on the given node */
136	ni = ieee80211_find_node(&ic->ic_sta, rs->is_u.macaddr);
137	if (ni == NULL) {
138		error = EINVAL;
139		goto bad;
140	}
141
142	/* Lock the ath_node */
143	an = ATH_NODE(ni);
144	ATH_NODE_LOCK(an);
145
146	/* Fetch the rate control stats for this node */
147	error = ath_rate_fetch_node_stats(sc, an, rs);
148
149	/* No matter what happens here, just drop through */
150
151	/* Unlock the ath_node */
152	ATH_NODE_UNLOCK(an);
153
154	/* Unref the node */
155	ieee80211_node_decref(ni);
156
157bad:
158	return (error);
159}
160
161#ifdef ATH_DIAGAPI
162/*
163 * Diagnostic interface to the HAL.  This is used by various
164 * tools to do things like retrieve register contents for
165 * debugging.  The mechanism is intentionally opaque so that
166 * it can change frequently w/o concern for compatibility.
167 */
168static int
169ath_ioctl_diag(struct ath_softc *sc, struct ath_diag *ad)
170{
171	struct ath_hal *ah = sc->sc_ah;
172	u_int id = ad->ad_id & ATH_DIAG_ID;
173	void *indata = NULL;
174	void *outdata = NULL;
175	u_int32_t insize = ad->ad_in_size;
176	u_int32_t outsize = ad->ad_out_size;
177	int error = 0;
178
179	if (ad->ad_id & ATH_DIAG_IN) {
180		/*
181		 * Copy in data.
182		 */
183		indata = malloc(insize, M_TEMP, M_NOWAIT);
184		if (indata == NULL) {
185			error = ENOMEM;
186			goto bad;
187		}
188		error = copyin(ad->ad_in_data, indata, insize);
189		if (error)
190			goto bad;
191	}
192	if (ad->ad_id & ATH_DIAG_DYN) {
193		/*
194		 * Allocate a buffer for the results (otherwise the HAL
195		 * returns a pointer to a buffer where we can read the
196		 * results).  Note that we depend on the HAL leaving this
197		 * pointer for us to use below in reclaiming the buffer;
198		 * may want to be more defensive.
199		 */
200		outdata = malloc(outsize, M_TEMP, M_NOWAIT | M_ZERO);
201		if (outdata == NULL) {
202			error = ENOMEM;
203			goto bad;
204		}
205	}
206
207
208	ATH_LOCK(sc);
209	if (id != HAL_DIAG_REGS)
210		ath_power_set_power_state(sc, HAL_PM_AWAKE);
211	ATH_UNLOCK(sc);
212
213	if (ath_hal_getdiagstate(ah, id, indata, insize, &outdata, &outsize)) {
214		if (outsize < ad->ad_out_size)
215			ad->ad_out_size = outsize;
216		if (outdata != NULL)
217			error = copyout(outdata, ad->ad_out_data,
218					ad->ad_out_size);
219	} else {
220		error = EINVAL;
221	}
222
223	ATH_LOCK(sc);
224	if (id != HAL_DIAG_REGS)
225		ath_power_restore_power_state(sc);
226	ATH_UNLOCK(sc);
227
228bad:
229	if ((ad->ad_id & ATH_DIAG_IN) && indata != NULL)
230		free(indata, M_TEMP);
231	if ((ad->ad_id & ATH_DIAG_DYN) && outdata != NULL)
232		free(outdata, M_TEMP);
233	return error;
234}
235#endif /* ATH_DIAGAPI */
236
237int
238ath_ioctl(struct ieee80211com *ic, u_long cmd, void *data)
239{
240	struct ifreq *ifr = data;
241	struct ath_softc *sc = ic->ic_softc;
242
243	switch (cmd) {
244	case SIOCGATHSTATS: {
245		struct ieee80211vap *vap;
246		struct ifnet *ifp;
247		const HAL_RATE_TABLE *rt;
248
249		/* NB: embed these numbers to get a consistent view */
250		sc->sc_stats.ast_tx_packets = 0;
251		sc->sc_stats.ast_rx_packets = 0;
252		TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
253			ifp = vap->iv_ifp;
254			sc->sc_stats.ast_tx_packets += ifp->if_get_counter(ifp,
255			    IFCOUNTER_OPACKETS);
256			sc->sc_stats.ast_rx_packets += ifp->if_get_counter(ifp,
257			    IFCOUNTER_IPACKETS);
258		}
259		sc->sc_stats.ast_tx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgtxrssi);
260		sc->sc_stats.ast_rx_rssi = ATH_RSSI(sc->sc_halstats.ns_avgrssi);
261#ifdef IEEE80211_SUPPORT_TDMA
262		sc->sc_stats.ast_tdma_tsfadjp = TDMA_AVG(sc->sc_avgtsfdeltap);
263		sc->sc_stats.ast_tdma_tsfadjm = TDMA_AVG(sc->sc_avgtsfdeltam);
264#endif
265		rt = sc->sc_currates;
266		sc->sc_stats.ast_tx_rate =
267		    rt->info[sc->sc_txrix].dot11Rate &~ IEEE80211_RATE_BASIC;
268		if (rt->info[sc->sc_txrix].phy & IEEE80211_T_HT)
269			sc->sc_stats.ast_tx_rate |= IEEE80211_RATE_MCS;
270		return copyout(&sc->sc_stats, ifr_data_get_ptr(ifr),
271		    sizeof (sc->sc_stats));
272	}
273	case SIOCGATHAGSTATS:
274		return copyout(&sc->sc_aggr_stats, ifr_data_get_ptr(ifr),
275		    sizeof (sc->sc_aggr_stats));
276	case SIOCZATHSTATS: {
277		int error;
278
279		error = priv_check(curthread, PRIV_DRIVER);
280		if (error == 0) {
281			memset(&sc->sc_stats, 0, sizeof(sc->sc_stats));
282			memset(&sc->sc_aggr_stats, 0,
283			    sizeof(sc->sc_aggr_stats));
284			memset(&sc->sc_intr_stats, 0,
285			    sizeof(sc->sc_intr_stats));
286		}
287		return (error);
288	}
289#ifdef ATH_DIAGAPI
290	case SIOCGATHDIAG:
291		return (ath_ioctl_diag(sc, data));
292	case SIOCGATHPHYERR:
293		return (ath_ioctl_phyerr(sc, data));
294#endif
295	case SIOCGATHSPECTRAL:
296		return (ath_ioctl_spectral(sc, data));
297	case SIOCGATHNODERATESTATS:
298		return (ath_ioctl_ratestats(sc, data));
299	default:
300		/*
301		 * This signals the net80211 layer that we didn't handle this
302		 * ioctl.
303		 */
304		return (ENOTTY);
305	}
306}
307
308