2 * WPA Supplicant - driver interaction with BSD net80211 layer
3 * Copyright (c) 2004, Sam Leffler <sam@errno.com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
21 #include <sys/ioctl.h>
27 #include "l2_packet.h"
28 #include "ieee802_11_defs.h"
30 #include <sys/socket.h>
32 #include <net/ethernet.h>
34 #include <net80211/ieee80211_ioctl.h>
36 struct wpa_driver_bsd_data {
37 int sock; /* open socket for 802.11 ioctls */
38 int route; /* routing socket for events */
39 char ifname[IFNAMSIZ+1]; /* interface name */
40 unsigned int ifindex; /* interface index */
42 int prev_roaming; /* roaming state to restore on deinit */
43 int prev_privacy; /* privacy state to restore on deinit */
44 int prev_wpa; /* wpa state to restore on deinit */
45 int prev_scanvalid; /* scan valid to restore on deinit */
46 uint8_t lastssid[IEEE80211_NWID_LEN];
48 uint32_t drivercaps; /* general driver capabilities */
49 uint32_t cryptocaps; /* hardware crypto support */
53 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
55 struct ieee80211req ireq;
57 memset(&ireq, 0, sizeof(ireq));
58 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
61 ireq.i_data = (void *) arg;
63 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
64 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
65 op, arg_len, strerror(errno));
72 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
74 struct ieee80211req ireq;
76 memset(&ireq, 0, sizeof(ireq));
77 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
82 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
83 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
84 op, arg_len, strerror(errno));
91 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
93 struct ieee80211req ireq;
95 memset(&ireq, 0, sizeof(ireq));
96 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
100 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
101 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
102 op, arg, strerror(errno));
109 get80211param(struct wpa_driver_bsd_data *drv, int op)
111 struct ieee80211req ireq;
113 memset(&ireq, 0, sizeof(ireq));
114 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
117 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
118 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
119 op, strerror(errno));
126 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
130 memset(&ifr, 0, sizeof(ifr));
131 strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
132 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
133 perror("SIOCGIFFLAGS");
136 *flags = (ifr.ifr_flags & 0xffff) | (ifr.ifr_flagshigh << 16);
141 setifflags(struct wpa_driver_bsd_data *drv, int flags)
145 memset(&ifr, 0, sizeof(ifr));
146 strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
147 ifr.ifr_flags = flags & 0xffff;
148 ifr.ifr_flagshigh = flags >> 16;
149 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
150 perror("SIOCSIFFLAGS");
157 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
159 struct wpa_driver_bsd_data *drv = priv;
161 return get80211var(drv, IEEE80211_IOC_BSSID,
162 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
167 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
169 struct wpa_driver_bsd_data *drv = priv;
171 return set80211var(drv, IEEE80211_IOC_BSSID,
172 bssid, IEEE80211_ADDR_LEN);
177 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
179 struct wpa_driver_bsd_data *drv = priv;
181 return get80211var(drv, IEEE80211_IOC_SSID,
182 ssid, IEEE80211_NWID_LEN);
186 wpa_driver_bsd_set_ssid(void *priv, const char *ssid,
189 struct wpa_driver_bsd_data *drv = priv;
191 return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
195 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
196 const char *wpa_ie, size_t wpa_ie_len)
198 struct ieee80211req ireq;
200 memset(&ireq, 0, sizeof(ireq));
201 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
202 ireq.i_type = IEEE80211_IOC_APPIE;
203 ireq.i_val = IEEE80211_APPIE_WPA;
204 ireq.i_len = wpa_ie_len;
205 ireq.i_data = (void *) wpa_ie;
206 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
208 "ioctl[IEEE80211_IOC_APPIE:IEEE80211_APPIE_WPA]: %s\n",
216 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
218 struct wpa_driver_bsd_data *drv = priv;
221 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
222 __FUNCTION__, wpa, privacy);
224 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
226 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
228 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
235 wpa_driver_bsd_set_wpa(void *priv, int enabled)
237 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __FUNCTION__, enabled);
239 return wpa_driver_bsd_set_wpa_internal(priv, enabled ? 3 : 0, enabled);
243 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
244 const unsigned char *addr)
246 struct ieee80211req_del_key wk;
248 memset(&wk, 0, sizeof(wk));
250 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
251 struct ether_addr ea;
253 memcpy(&ea, addr, IEEE80211_ADDR_LEN);
254 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
255 __func__, ether_ntoa(&ea), key_idx);
256 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
257 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
259 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
260 wk.idk_keyix = key_idx;
262 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
266 wpa_driver_bsd_set_key(void *priv, wpa_alg alg,
267 const unsigned char *addr, int key_idx, int set_tx,
268 const u8 *seq, size_t seq_len,
269 const u8 *key, size_t key_len)
271 struct wpa_driver_bsd_data *drv = priv;
272 struct ieee80211req_key wk;
273 struct ether_addr ea;
277 if (alg == WPA_ALG_NONE)
278 return wpa_driver_bsd_del_key(drv, key_idx, addr);
283 cipher = IEEE80211_CIPHER_WEP;
287 cipher = IEEE80211_CIPHER_TKIP;
291 cipher = IEEE80211_CIPHER_AES_CCM;
294 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
299 memcpy(&ea, addr, IEEE80211_ADDR_LEN);
300 wpa_printf(MSG_DEBUG,
301 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
302 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
305 if (seq_len > sizeof(u_int64_t)) {
306 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
310 if (key_len > sizeof(wk.ik_keydata)) {
311 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
316 memset(&wk, 0, sizeof(wk));
318 wk.ik_flags = IEEE80211_KEY_RECV;
320 wk.ik_flags |= IEEE80211_KEY_XMIT;
321 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
323 * Deduce whether group/global or unicast key by checking
324 * the address (yech). Note also that we can only mark global
325 * keys default; doing this for a unicast key is an error.
327 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
328 wk.ik_flags |= IEEE80211_KEY_GROUP;
329 wk.ik_keyix = key_idx;
331 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
333 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
334 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
335 wk.ik_keylen = key_len;
336 memcpy(&wk.ik_keyrsc, seq, seq_len);
337 wk.ik_keyrsc = le64toh(wk.ik_keyrsc);
338 memcpy(wk.ik_keydata, key, key_len);
340 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
344 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
346 struct wpa_driver_bsd_data *drv = priv;
348 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
349 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
354 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
356 struct wpa_driver_bsd_data *drv = priv;
358 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
359 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
363 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
365 struct wpa_driver_bsd_data *drv = priv;
366 struct ieee80211req_mlme mlme;
368 drv->lastssid_len = 0;
370 wpa_printf(MSG_DEBUG, "%s", __func__);
371 memset(&mlme, 0, sizeof(mlme));
372 mlme.im_op = IEEE80211_MLME_DEAUTH;
373 mlme.im_reason = reason_code;
374 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
375 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
379 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
381 struct wpa_driver_bsd_data *drv = priv;
382 struct ieee80211req_mlme mlme;
384 drv->lastssid_len = 0;
386 wpa_printf(MSG_DEBUG, "%s", __func__);
387 memset(&mlme, 0, sizeof(mlme));
388 mlme.im_op = IEEE80211_MLME_DISASSOC;
389 mlme.im_reason = reason_code;
390 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
391 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
395 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
397 struct wpa_driver_bsd_data *drv = priv;
398 struct ieee80211req_mlme mlme;
401 wpa_printf(MSG_DEBUG,
402 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
404 , params->ssid_len, params->ssid
406 , params->pairwise_suite
407 , params->group_suite
408 , params->key_mgmt_suite
411 /* XXX error handling is wrong but unclear what to do... */
412 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
415 privacy = !(params->pairwise_suite == CIPHER_NONE &&
416 params->group_suite == CIPHER_NONE &&
417 params->key_mgmt_suite == KEY_MGMT_NONE &&
418 params->wpa_ie_len == 0);
419 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
421 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
424 if (params->wpa_ie_len &&
425 set80211param(drv, IEEE80211_IOC_WPA,
426 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
429 memset(&mlme, 0, sizeof(mlme));
430 mlme.im_op = IEEE80211_MLME_ASSOC;
431 if (params->ssid != NULL)
432 memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
433 mlme.im_ssid_len = params->ssid_len;
434 if (params->bssid != NULL)
435 memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
436 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
438 memcpy(drv->lastssid, params->ssid, params->ssid_len);
439 drv->lastssid_len = params->ssid_len;
444 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
446 struct wpa_driver_bsd_data *drv = priv;
449 if ((auth_alg & AUTH_ALG_OPEN_SYSTEM) &&
450 (auth_alg & AUTH_ALG_SHARED_KEY))
451 authmode = IEEE80211_AUTH_AUTO;
452 else if (auth_alg & AUTH_ALG_SHARED_KEY)
453 authmode = IEEE80211_AUTH_SHARED;
455 authmode = IEEE80211_AUTH_OPEN;
457 wpa_printf(MSG_DEBUG, "%s alg 0x%x authmode %u",
458 __func__, auth_alg, authmode);
460 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
464 wpa_driver_bsd_scan(void *priv, const u8 *ssid, size_t ssid_len)
466 struct wpa_driver_bsd_data *drv = priv;
467 struct ieee80211_scan_req sr;
470 /* XXX not true but easiest to perpetuate the myth */
471 /* NB: interface must be marked UP to do a scan */
472 if (getifflags(drv, &flags) != 0) {
473 wpa_printf(MSG_DEBUG, "%s did not mark interface UP", __func__);
476 if ((flags & IFF_UP) == 0 && setifflags(drv, flags | IFF_UP) != 0) {
477 wpa_printf(MSG_DEBUG, "%s unable to mark interface UP",
482 memset(&sr, 0, sizeof(sr));
483 sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE
484 | IEEE80211_IOC_SCAN_ONCE
485 | IEEE80211_IOC_SCAN_NOJOIN
487 sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
489 /* XXX ssid_len must be <= IEEE80211_NWID_LEN */
490 memcpy(sr.sr_ssid[sr.sr_nssid].ssid, ssid, ssid_len);
491 sr.sr_ssid[sr.sr_nssid].len = ssid_len;
494 if (drv->lastssid_len != 0 &&
495 (drv->lastssid_len != ssid_len ||
496 memcmp(drv->lastssid, ssid, ssid_len) != 0)) {
498 * If we are scanning because we received a deauth
499 * and the scan cache is warm then we'll find the
500 * ap there and short circuit a full-blown scan.
502 memcpy(sr.sr_ssid[sr.sr_nssid].ssid, drv->lastssid,
504 sr.sr_ssid[sr.sr_nssid].len = drv->lastssid_len;
506 /* NB: clear so we don't retry w/o associating first */
507 drv->lastssid_len = 0;
509 if (sr.sr_nssid != 0) /* NB: check scan cache first */
510 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
512 /* NB: net80211 delivers a scan complete event so no need to poll */
513 return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
516 #include <net/route.h>
517 #include <net80211/ieee80211_freebsd.h>
520 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
522 struct wpa_driver_bsd_data *drv = sock_ctx;
524 struct if_announcemsghdr *ifan;
525 struct if_msghdr *ifm;
526 struct rt_msghdr *rtm;
527 union wpa_event_data event;
528 struct ieee80211_michael_event *mic;
531 n = read(sock, buf, sizeof(buf));
533 if (errno != EINTR && errno != EAGAIN)
534 perror("read(PF_ROUTE)");
538 rtm = (struct rt_msghdr *) buf;
539 if (rtm->rtm_version != RTM_VERSION) {
540 wpa_printf(MSG_DEBUG, "Routing message version %d not "
541 "understood\n", rtm->rtm_version);
544 memset(&event, 0, sizeof(event));
545 switch (rtm->rtm_type) {
547 ifan = (struct if_announcemsghdr *) rtm;
548 if (ifan->ifan_index != drv->ifindex)
550 strlcpy(event.interface_status.ifname, drv->ifname,
551 sizeof(event.interface_status.ifname));
552 switch (ifan->ifan_what) {
554 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
558 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
559 event.interface_status.ifname,
560 ifan->ifan_what == IFAN_DEPARTURE ?
561 "removed" : "added");
562 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
565 ifan = (struct if_announcemsghdr *) rtm;
566 if (ifan->ifan_index != drv->ifindex)
568 switch (ifan->ifan_what) {
569 case RTM_IEEE80211_ASSOC:
570 case RTM_IEEE80211_REASSOC:
571 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
573 case RTM_IEEE80211_DISASSOC:
574 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
576 case RTM_IEEE80211_SCAN:
577 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
579 case RTM_IEEE80211_REPLAY:
582 case RTM_IEEE80211_MICHAEL:
583 mic = (struct ieee80211_michael_event *) &ifan[1];
584 wpa_printf(MSG_DEBUG,
585 "Michael MIC failure wireless event: "
586 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
587 MAC2STR(mic->iev_src));
589 memset(&event, 0, sizeof(event));
590 event.michael_mic_failure.unicast =
591 !IEEE80211_IS_MULTICAST(mic->iev_dst);
592 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
598 ifm = (struct if_msghdr *) rtm;
599 if (ifm->ifm_index != drv->ifindex)
601 if ((rtm->rtm_flags & RTF_UP) == 0) {
602 strlcpy(event.interface_status.ifname, drv->ifname,
603 sizeof(event.interface_status.ifname));
604 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
605 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
606 event.interface_status.ifname);
607 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
613 /* Compare function for sorting scan results. Return >0 if @b is consider
616 wpa_scan_result_compar(const void *a, const void *b)
618 const struct wpa_scan_result *wa = a;
619 const struct wpa_scan_result *wb = b;
621 /* WPA/WPA2 support preferred */
622 if ((wb->wpa_ie_len || wb->rsn_ie_len) &&
623 !(wa->wpa_ie_len || wa->rsn_ie_len))
625 if (!(wb->wpa_ie_len || wb->rsn_ie_len) &&
626 (wa->wpa_ie_len || wa->rsn_ie_len))
629 /* privacy support preferred */
630 if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) &&
631 (wb->caps & IEEE80211_CAPINFO_PRIVACY) == 0)
633 if ((wa->caps & IEEE80211_CAPINFO_PRIVACY) == 0 &&
634 (wb->caps & IEEE80211_CAPINFO_PRIVACY))
637 /* best/max rate preferred if signal level close enough XXX */
638 if (wa->maxrate != wb->maxrate && abs(wb->level - wa->level) < 5)
639 return wb->maxrate - wa->maxrate;
641 /* use freq for channel preference */
643 /* all things being equal, use signal level */
644 return wb->level - wa->level;
648 getmaxrate(const uint8_t rates[15], uint8_t nrates)
652 for (i = 0; i < nrates; i++) {
653 int rate = rates[i] & IEEE80211_RATE_VAL;
660 /* unalligned little endian access */
661 #define LE_READ_4(p) \
663 ((((const u_int8_t *)(p))[0] ) | \
664 (((const u_int8_t *)(p))[1] << 8) | \
665 (((const u_int8_t *)(p))[2] << 16) | \
666 (((const u_int8_t *)(p))[3] << 24)))
669 iswpaoui(const u_int8_t *frm)
671 return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI);
675 wpa_driver_bsd_get_scan_results(void *priv,
676 struct wpa_scan_result *results,
679 #define min(a,b) ((a)>(b)?(b):(a))
680 struct wpa_driver_bsd_data *drv = priv;
681 uint8_t buf[24*1024];
682 const uint8_t *cp, *vp;
683 const struct ieee80211req_scan_result *sr;
684 struct wpa_scan_result *wsr;
687 memset(results, 0, max_size * sizeof(struct wpa_scan_result));
689 len = get80211var(drv, IEEE80211_IOC_SCAN_RESULTS, buf, sizeof(buf));
694 while (len >= sizeof(struct ieee80211req_scan_result)) {
695 sr = (const struct ieee80211req_scan_result *) cp;
696 memcpy(wsr->bssid, sr->isr_bssid, IEEE80211_ADDR_LEN);
697 wsr->ssid_len = sr->isr_ssid_len;
698 wsr->freq = sr->isr_freq;
699 wsr->noise = sr->isr_noise;
700 wsr->qual = sr->isr_rssi;
701 wsr->level = 0; /* XXX? */
702 wsr->caps = sr->isr_capinfo;
703 wsr->maxrate = getmaxrate(sr->isr_rates, sr->isr_nrates);
704 vp = ((u_int8_t *)sr) + sr->isr_ie_off;
705 memcpy(wsr->ssid, vp, sr->isr_ssid_len);
706 if (sr->isr_ie_len > 0) {
707 vp += sr->isr_ssid_len;
708 ielen = sr->isr_ie_len;
711 case IEEE80211_ELEMID_VENDOR:
715 min(2+vp[1], SSID_MAX_WPA_IE_LEN);
716 memcpy(wsr->wpa_ie, vp, wsr->wpa_ie_len);
718 case IEEE80211_ELEMID_RSN:
720 min(2+vp[1], SSID_MAX_WPA_IE_LEN);
721 memcpy(wsr->rsn_ie, vp, wsr->rsn_ie_len);
729 cp += sr->isr_len, len -= sr->isr_len;
732 qsort(results, wsr - results, sizeof(struct wpa_scan_result),
733 wpa_scan_result_compar);
735 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%d BSSes)",
738 return wsr - results;
742 #define GETPARAM(drv, param, v) \
743 (((v) = get80211param(drv, param)) != -1)
744 #define IEEE80211_C_BGSCAN 0x20000000
747 * Set the scan cache valid threshold to 1.5 x bg scan interval
748 * to force all scan requests to consult the cache unless they
749 * explicitly bypass it.
752 setscanvalid(struct wpa_driver_bsd_data *drv)
754 int bgscan, scanvalid;
756 if (!GETPARAM(drv, IEEE80211_IOC_SCANVALID, drv->prev_scanvalid) ||
757 !GETPARAM(drv, IEEE80211_IOC_BGSCAN_INTERVAL, bgscan))
759 scanvalid = 3*bgscan/2;
760 return (drv->prev_scanvalid < scanvalid) ?
761 set80211param(drv, IEEE80211_IOC_SCANVALID, scanvalid) : 0;
765 wpa_driver_bsd_init(void *ctx, const char *ifname)
767 struct wpa_driver_bsd_data *drv;
768 struct ieee80211_devcaps_req devcaps;
771 drv = malloc(sizeof(*drv));
774 memset(drv, 0, sizeof(*drv));
776 * NB: We require the interface name be mappable to an index.
777 * This implies we do not support having wpa_supplicant
778 * wait for an interface to appear. This seems ok; that
779 * doesn't belong here; it's really the job of devd.
781 drv->ifindex = if_nametoindex(ifname);
782 if (drv->ifindex == 0) {
783 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
787 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
791 strncpy(drv->ifname, ifname, sizeof(drv->ifname));
794 * Mark the interface as down to ensure wpa_supplicant has exclusive
795 * access to the net80211 state machine, do this before opening the
796 * route socket to avoid a false event that the interface disappeared.
798 if (getifflags(drv, &flags) == 0)
799 (void) setifflags(drv, flags &~ IFF_UP);
801 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
804 eloop_register_read_sock(drv->route,
805 wpa_driver_bsd_event_receive, ctx, drv);
807 if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps, sizeof(devcaps)) < 0) {
808 wpa_printf(MSG_DEBUG,
809 "%s: failed to get device capabilities: %s",
810 __func__, strerror(errno));
813 drv->drivercaps = devcaps.dc_drivercaps;
814 drv->cryptocaps = devcaps.dc_cryptocaps;
816 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
817 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
818 __func__, strerror(errno));
821 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
822 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
823 __func__, strerror(errno));
826 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
827 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
828 __func__, strerror(errno));
831 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
832 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
833 "roaming: %s", __func__, strerror(errno));
836 if (drv->drivercaps & IEEE80211_C_BGSCAN) {
838 * Driver does background scanning; force the scan valid
839 * setting to 1.5 x bg scan interval so the scan cache is
840 * always consulted before we force a foreground scan.
842 if (setscanvalid(drv) < 0) {
843 wpa_printf(MSG_DEBUG,
844 "%s: warning, failed to set scanvalid, scanning "
845 "may be suboptimal: %s", __func__, strerror(errno));
848 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
849 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
850 __func__, strerror(errno));
864 wpa_driver_bsd_deinit(void *priv)
866 struct wpa_driver_bsd_data *drv = priv;
869 /* NB: mark interface down */
870 if (getifflags(drv, &flags) == 0)
871 (void) setifflags(drv, flags &~ IFF_UP);
873 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
874 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0) {
875 /* NB: don't whinge if device ejected or equivalent */
877 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming "
880 if (drv->drivercaps & IEEE80211_C_BGSCAN) {
881 /* XXX check return value */
882 (void) set80211param(drv, IEEE80211_IOC_SCANVALID,
883 drv->prev_scanvalid);
886 (void) close(drv->route); /* ioctl socket */
887 (void) close(drv->sock); /* event socket */
892 struct wpa_driver_ops wpa_driver_bsd_ops = {
894 .desc = "BSD 802.11 support (Atheros, etc.)",
895 .init = wpa_driver_bsd_init,
896 .deinit = wpa_driver_bsd_deinit,
897 .get_bssid = wpa_driver_bsd_get_bssid,
898 .get_ssid = wpa_driver_bsd_get_ssid,
899 .set_wpa = wpa_driver_bsd_set_wpa,
900 .set_key = wpa_driver_bsd_set_key,
901 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
902 .set_drop_unencrypted = wpa_driver_bsd_set_drop_unencrypted,
903 .scan = wpa_driver_bsd_scan,
904 .get_scan_results = wpa_driver_bsd_get_scan_results,
905 .deauthenticate = wpa_driver_bsd_deauthenticate,
906 .disassociate = wpa_driver_bsd_disassociate,
907 .associate = wpa_driver_bsd_associate,
908 .set_auth_alg = wpa_driver_bsd_set_auth_alg,