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/if_media.h>
33 #include <net/ethernet.h>
35 #include <net80211/ieee80211_ioctl.h>
37 struct wpa_driver_bsd_data {
38 int sock; /* open socket for 802.11 ioctls */
39 int route; /* routing socket for events */
40 char ifname[IFNAMSIZ+1]; /* interface name */
41 unsigned int ifindex; /* interface index */
43 int prev_roaming; /* roaming state to restore on deinit */
44 int prev_privacy; /* privacy state to restore on deinit */
45 int prev_wpa; /* wpa state to restore on deinit */
46 int prev_scanvalid; /* scan valid to restore on deinit */
47 uint8_t lastssid[IEEE80211_NWID_LEN];
49 uint32_t drivercaps; /* general driver capabilities */
50 uint32_t cryptocaps; /* hardware crypto support */
51 enum ieee80211_opmode opmode; /* operation mode */
54 static enum ieee80211_opmode
55 get80211opmode(struct wpa_driver_bsd_data *drv)
57 struct ifmediareq ifmr;
59 (void) memset(&ifmr, 0, sizeof(ifmr));
60 (void) strncpy(ifmr.ifm_name, drv->ifname, sizeof(ifmr.ifm_name));
62 if (ioctl(drv->sock, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0) {
63 if (ifmr.ifm_current & IFM_IEEE80211_ADHOC) {
64 if (ifmr.ifm_current & IFM_FLAG0)
65 return IEEE80211_M_AHDEMO;
67 return IEEE80211_M_IBSS;
69 if (ifmr.ifm_current & IFM_IEEE80211_HOSTAP)
70 return IEEE80211_M_HOSTAP;
71 if (ifmr.ifm_current & IFM_IEEE80211_MONITOR)
72 return IEEE80211_M_MONITOR;
73 if (ifmr.ifm_current & IFM_IEEE80211_MBSS)
74 return IEEE80211_M_MBSS;
76 return IEEE80211_M_STA;
80 set80211var(struct wpa_driver_bsd_data *drv, int op, const void *arg, int arg_len)
82 struct ieee80211req ireq;
84 memset(&ireq, 0, sizeof(ireq));
85 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
88 ireq.i_data = (void *) arg;
90 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
91 fprintf(stderr, "ioctl[SIOCS80211, op %u, len %u]: %s\n",
92 op, arg_len, strerror(errno));
99 get80211var(struct wpa_driver_bsd_data *drv, int op, void *arg, int arg_len)
101 struct ieee80211req ireq;
103 memset(&ireq, 0, sizeof(ireq));
104 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
106 ireq.i_len = arg_len;
109 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
110 fprintf(stderr, "ioctl[SIOCG80211, op %u, len %u]: %s\n",
111 op, arg_len, strerror(errno));
118 set80211param(struct wpa_driver_bsd_data *drv, int op, int arg)
120 struct ieee80211req ireq;
122 memset(&ireq, 0, sizeof(ireq));
123 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
127 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
128 fprintf(stderr, "ioctl[SIOCS80211, op %u, arg 0x%x]: %s\n",
129 op, arg, strerror(errno));
136 get80211param(struct wpa_driver_bsd_data *drv, int op)
138 struct ieee80211req ireq;
140 memset(&ireq, 0, sizeof(ireq));
141 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
144 if (ioctl(drv->sock, SIOCG80211, &ireq) < 0) {
145 fprintf(stderr, "ioctl[SIOCG80211, op %u]: %s\n",
146 op, strerror(errno));
153 getifflags(struct wpa_driver_bsd_data *drv, int *flags)
157 memset(&ifr, 0, sizeof(ifr));
158 strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
159 if (ioctl(drv->sock, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
160 perror("SIOCGIFFLAGS");
163 *flags = (ifr.ifr_flags & 0xffff) | (ifr.ifr_flagshigh << 16);
168 setifflags(struct wpa_driver_bsd_data *drv, int flags)
172 memset(&ifr, 0, sizeof(ifr));
173 strncpy(ifr.ifr_name, drv->ifname, sizeof (ifr.ifr_name));
174 ifr.ifr_flags = flags & 0xffff;
175 ifr.ifr_flagshigh = flags >> 16;
176 if (ioctl(drv->sock, SIOCSIFFLAGS, (caddr_t)&ifr) < 0) {
177 perror("SIOCSIFFLAGS");
184 wpa_driver_bsd_get_bssid(void *priv, u8 *bssid)
186 struct wpa_driver_bsd_data *drv = priv;
188 return get80211var(drv, IEEE80211_IOC_BSSID,
189 bssid, IEEE80211_ADDR_LEN) < 0 ? -1 : 0;
194 wpa_driver_bsd_set_bssid(void *priv, const char *bssid)
196 struct wpa_driver_bsd_data *drv = priv;
198 return set80211var(drv, IEEE80211_IOC_BSSID,
199 bssid, IEEE80211_ADDR_LEN);
204 wpa_driver_bsd_get_ssid(void *priv, u8 *ssid)
206 struct wpa_driver_bsd_data *drv = priv;
208 return get80211var(drv, IEEE80211_IOC_SSID,
209 ssid, IEEE80211_NWID_LEN);
213 wpa_driver_bsd_set_ssid(void *priv, const char *ssid,
216 struct wpa_driver_bsd_data *drv = priv;
218 return set80211var(drv, IEEE80211_IOC_SSID, ssid, ssid_len);
222 wpa_driver_bsd_set_wpa_ie(struct wpa_driver_bsd_data *drv,
223 const u8 *wpa_ie, size_t wpa_ie_len)
225 struct ieee80211req ireq;
227 memset(&ireq, 0, sizeof(ireq));
228 strncpy(ireq.i_name, drv->ifname, IFNAMSIZ);
229 ireq.i_type = IEEE80211_IOC_APPIE;
230 ireq.i_val = IEEE80211_APPIE_WPA;
231 ireq.i_len = wpa_ie_len;
232 ireq.i_data = (void *) wpa_ie;
233 if (ioctl(drv->sock, SIOCS80211, &ireq) < 0) {
235 "ioctl[IEEE80211_IOC_APPIE:IEEE80211_APPIE_WPA]: %s\n",
243 wpa_driver_bsd_set_wpa_internal(void *priv, int wpa, int privacy)
245 struct wpa_driver_bsd_data *drv = priv;
248 wpa_printf(MSG_DEBUG, "%s: wpa=%d privacy=%d",
249 __FUNCTION__, wpa, privacy);
251 if (!wpa && wpa_driver_bsd_set_wpa_ie(drv, NULL, 0) < 0)
253 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
255 if (set80211param(drv, IEEE80211_IOC_WPA, wpa) < 0)
262 wpa_driver_bsd_del_key(struct wpa_driver_bsd_data *drv, int key_idx,
263 const unsigned char *addr)
265 struct ieee80211req_del_key wk;
267 memset(&wk, 0, sizeof(wk));
269 bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) != 0) {
270 struct ether_addr ea;
272 memcpy(&ea, addr, IEEE80211_ADDR_LEN);
273 wpa_printf(MSG_DEBUG, "%s: addr=%s keyidx=%d",
274 __func__, ether_ntoa(&ea), key_idx);
275 memcpy(wk.idk_macaddr, addr, IEEE80211_ADDR_LEN);
276 wk.idk_keyix = (uint8_t) IEEE80211_KEYIX_NONE;
278 wpa_printf(MSG_DEBUG, "%s: keyidx=%d", __func__, key_idx);
279 wk.idk_keyix = key_idx;
281 return set80211var(drv, IEEE80211_IOC_DELKEY, &wk, sizeof(wk));
285 wpa_driver_bsd_set_key(const char *ifname, void *priv, enum wpa_alg alg,
286 const unsigned char *addr, int key_idx, int set_tx,
287 const u8 *seq, size_t seq_len,
288 const u8 *key, size_t key_len)
290 struct wpa_driver_bsd_data *drv = priv;
291 struct ieee80211req_key wk;
292 struct ether_addr ea;
296 if (alg == WPA_ALG_NONE)
297 return wpa_driver_bsd_del_key(drv, key_idx, addr);
302 cipher = IEEE80211_CIPHER_WEP;
306 cipher = IEEE80211_CIPHER_TKIP;
310 cipher = IEEE80211_CIPHER_AES_CCM;
313 wpa_printf(MSG_DEBUG, "%s: unknown/unsupported algorithm %d",
318 memcpy(&ea, addr, IEEE80211_ADDR_LEN);
319 wpa_printf(MSG_DEBUG,
320 "%s: alg=%s addr=%s key_idx=%d set_tx=%d seq_len=%zu key_len=%zu",
321 __func__, alg_name, ether_ntoa(&ea), key_idx, set_tx,
324 if (seq_len > sizeof(u_int64_t)) {
325 wpa_printf(MSG_DEBUG, "%s: seq_len %zu too big",
329 if (key_len > sizeof(wk.ik_keydata)) {
330 wpa_printf(MSG_DEBUG, "%s: key length %zu too big",
335 memset(&wk, 0, sizeof(wk));
337 wk.ik_flags = IEEE80211_KEY_RECV;
339 wk.ik_flags |= IEEE80211_KEY_XMIT;
340 memcpy(wk.ik_macaddr, addr, IEEE80211_ADDR_LEN);
342 * Deduce whether group/global or unicast key by checking
343 * the address (yech). Note also that we can only mark global
344 * keys default; doing this for a unicast key is an error.
346 if (bcmp(addr, "\xff\xff\xff\xff\xff\xff", IEEE80211_ADDR_LEN) == 0) {
347 wk.ik_flags |= IEEE80211_KEY_GROUP;
348 wk.ik_keyix = key_idx;
350 wk.ik_keyix = (key_idx == 0 ? IEEE80211_KEYIX_NONE : key_idx);
352 if (wk.ik_keyix != IEEE80211_KEYIX_NONE && set_tx)
353 wk.ik_flags |= IEEE80211_KEY_DEFAULT;
355 * Ignore replay failures in IBSS and AHDEMO mode.
357 if (drv->opmode == IEEE80211_M_IBSS ||
358 drv->opmode == IEEE80211_M_AHDEMO)
359 wk.ik_flags |= IEEE80211_KEY_NOREPLAY;
360 wk.ik_keylen = key_len;
361 memcpy(&wk.ik_keyrsc, seq, seq_len);
362 wk.ik_keyrsc = le64toh(wk.ik_keyrsc);
363 memcpy(wk.ik_keydata, key, key_len);
365 return set80211var(drv, IEEE80211_IOC_WPAKEY, &wk, sizeof(wk));
369 wpa_driver_bsd_set_countermeasures(void *priv, int enabled)
371 struct wpa_driver_bsd_data *drv = priv;
373 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
374 return set80211param(drv, IEEE80211_IOC_COUNTERMEASURES, enabled);
379 wpa_driver_bsd_set_drop_unencrypted(void *priv, int enabled)
381 struct wpa_driver_bsd_data *drv = priv;
383 wpa_printf(MSG_DEBUG, "%s: enabled=%d", __func__, enabled);
384 return set80211param(drv, IEEE80211_IOC_DROPUNENCRYPTED, enabled);
388 wpa_driver_bsd_set_auth_alg(void *priv, int auth_alg)
390 struct wpa_driver_bsd_data *drv = priv;
393 if ((auth_alg & WPA_AUTH_ALG_OPEN) &&
394 (auth_alg & WPA_AUTH_ALG_SHARED))
395 authmode = IEEE80211_AUTH_AUTO;
396 else if (auth_alg & WPA_AUTH_ALG_SHARED)
397 authmode = IEEE80211_AUTH_SHARED;
399 authmode = IEEE80211_AUTH_OPEN;
401 wpa_printf(MSG_DEBUG, "%s alg 0x%x authmode %u",
402 __func__, auth_alg, authmode);
404 return set80211param(drv, IEEE80211_IOC_AUTHMODE, authmode);
408 wpa_driver_bsd_deauthenticate(void *priv, const u8 *addr, int reason_code)
410 struct wpa_driver_bsd_data *drv = priv;
411 struct ieee80211req_mlme mlme;
413 drv->lastssid_len = 0;
415 wpa_printf(MSG_DEBUG, "%s", __func__);
416 memset(&mlme, 0, sizeof(mlme));
417 mlme.im_op = IEEE80211_MLME_DEAUTH;
418 mlme.im_reason = reason_code;
419 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
420 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
424 wpa_driver_bsd_disassociate(void *priv, const u8 *addr, int reason_code)
426 struct wpa_driver_bsd_data *drv = priv;
427 struct ieee80211req_mlme mlme;
429 drv->lastssid_len = 0;
431 wpa_printf(MSG_DEBUG, "%s", __func__);
432 memset(&mlme, 0, sizeof(mlme));
433 mlme.im_op = IEEE80211_MLME_DISASSOC;
434 mlme.im_reason = reason_code;
435 memcpy(mlme.im_macaddr, addr, IEEE80211_ADDR_LEN);
436 return set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme));
440 wpa_driver_bsd_associate(void *priv, struct wpa_driver_associate_params *params)
442 struct wpa_driver_bsd_data *drv = priv;
443 struct ieee80211req_mlme mlme;
446 wpa_printf(MSG_DEBUG,
447 "%s: ssid '%.*s' wpa ie len %u pairwise %u group %u key mgmt %u"
449 , params->ssid_len, params->ssid
451 , params->pairwise_suite
452 , params->group_suite
453 , params->key_mgmt_suite
456 /* NB: interface must be marked UP to associate */
457 if (getifflags(drv, &flags) != 0) {
458 wpa_printf(MSG_DEBUG, "%s did not mark interface UP", __func__);
461 if ((flags & IFF_UP) == 0 && setifflags(drv, flags | IFF_UP) != 0) {
462 wpa_printf(MSG_DEBUG, "%s unable to mark interface UP",
467 if (wpa_driver_bsd_set_drop_unencrypted(drv, params->drop_unencrypted)
470 if (wpa_driver_bsd_set_auth_alg(drv, params->auth_alg) < 0)
472 /* XXX error handling is wrong but unclear what to do... */
473 if (wpa_driver_bsd_set_wpa_ie(drv, params->wpa_ie, params->wpa_ie_len) < 0)
476 privacy = !(params->pairwise_suite == CIPHER_NONE &&
477 params->group_suite == CIPHER_NONE &&
478 params->key_mgmt_suite == KEY_MGMT_NONE &&
479 params->wpa_ie_len == 0);
480 wpa_printf(MSG_DEBUG, "%s: set PRIVACY %u", __func__, privacy);
482 if (set80211param(drv, IEEE80211_IOC_PRIVACY, privacy) < 0)
485 if (params->wpa_ie_len &&
486 set80211param(drv, IEEE80211_IOC_WPA,
487 params->wpa_ie[0] == WLAN_EID_RSN ? 2 : 1) < 0)
490 memset(&mlme, 0, sizeof(mlme));
491 mlme.im_op = IEEE80211_MLME_ASSOC;
492 if (params->ssid != NULL)
493 memcpy(mlme.im_ssid, params->ssid, params->ssid_len);
494 mlme.im_ssid_len = params->ssid_len;
495 if (params->bssid != NULL)
496 memcpy(mlme.im_macaddr, params->bssid, IEEE80211_ADDR_LEN);
497 if (set80211var(drv, IEEE80211_IOC_MLME, &mlme, sizeof(mlme)) < 0)
499 memcpy(drv->lastssid, params->ssid, params->ssid_len);
500 drv->lastssid_len = params->ssid_len;
505 wpa_driver_bsd_scan(void *priv, struct wpa_driver_scan_params *params)
507 struct wpa_driver_bsd_data *drv = priv;
508 struct ieee80211_scan_req sr;
512 /* XXX not true but easiest to perpetuate the myth */
513 /* NB: interface must be marked UP to do a scan */
514 if (getifflags(drv, &flags) != 0) {
515 wpa_printf(MSG_DEBUG, "%s did not mark interface UP", __func__);
518 if ((flags & IFF_UP) == 0 && setifflags(drv, flags | IFF_UP) != 0) {
519 wpa_printf(MSG_DEBUG, "%s unable to mark interface UP",
524 memset(&sr, 0, sizeof(sr));
525 sr.sr_flags = IEEE80211_IOC_SCAN_ACTIVE
526 | IEEE80211_IOC_SCAN_ONCE
527 | IEEE80211_IOC_SCAN_NOJOIN
529 sr.sr_duration = IEEE80211_IOC_SCAN_FOREVER;
530 if (params->num_ssids > 0) {
531 sr.sr_nssid = params->num_ssids;
533 /* Boundary check is done by upper layer */
534 if (sr.sr_nssid > IEEE80211_IOC_SCAN_MAX_SSID)
535 sr.sr_nssid = IEEE80211_IOC_SCAN_MAX_SSID;
537 /* NB: check scan cache first */
538 sr.sr_flags |= IEEE80211_IOC_SCAN_CHECK;
540 for (i = 0; i < sr.sr_nssid; i++) {
541 sr.sr_ssid[i].len = params->ssids[i].ssid_len;
542 os_memcpy(sr.sr_ssid[i].ssid, params->ssids[i].ssid,
545 /* NB: net80211 delivers a scan complete event so no need to poll */
546 return set80211var(drv, IEEE80211_IOC_SCAN_REQ, &sr, sizeof(sr));
549 #include <net/route.h>
550 #include <net80211/ieee80211_freebsd.h>
553 wpa_driver_bsd_event_receive(int sock, void *ctx, void *sock_ctx)
555 struct wpa_driver_bsd_data *drv = sock_ctx;
557 struct if_announcemsghdr *ifan;
558 struct if_msghdr *ifm;
559 struct rt_msghdr *rtm;
560 union wpa_event_data event;
561 struct ieee80211_michael_event *mic;
564 n = read(sock, buf, sizeof(buf));
566 if (errno != EINTR && errno != EAGAIN)
567 perror("read(PF_ROUTE)");
571 rtm = (struct rt_msghdr *) buf;
572 if (rtm->rtm_version != RTM_VERSION) {
573 wpa_printf(MSG_DEBUG, "Routing message version %d not "
574 "understood\n", rtm->rtm_version);
577 memset(&event, 0, sizeof(event));
578 switch (rtm->rtm_type) {
580 ifan = (struct if_announcemsghdr *) rtm;
581 if (ifan->ifan_index != drv->ifindex)
583 strlcpy(event.interface_status.ifname, drv->ifname,
584 sizeof(event.interface_status.ifname));
585 switch (ifan->ifan_what) {
587 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
591 wpa_printf(MSG_DEBUG, "RTM_IFANNOUNCE: Interface '%s' %s",
592 event.interface_status.ifname,
593 ifan->ifan_what == IFAN_DEPARTURE ?
594 "removed" : "added");
595 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
598 ifan = (struct if_announcemsghdr *) rtm;
599 if (ifan->ifan_index != drv->ifindex)
601 switch (ifan->ifan_what) {
602 case RTM_IEEE80211_ASSOC:
603 case RTM_IEEE80211_REASSOC:
604 wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
606 case RTM_IEEE80211_DISASSOC:
607 wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
609 case RTM_IEEE80211_SCAN:
610 wpa_supplicant_event(ctx, EVENT_SCAN_RESULTS, NULL);
612 case RTM_IEEE80211_REPLAY:
615 case RTM_IEEE80211_MICHAEL:
616 mic = (struct ieee80211_michael_event *) &ifan[1];
617 wpa_printf(MSG_DEBUG,
618 "Michael MIC failure wireless event: "
619 "keyix=%u src_addr=" MACSTR, mic->iev_keyix,
620 MAC2STR(mic->iev_src));
622 memset(&event, 0, sizeof(event));
623 event.michael_mic_failure.unicast =
624 !IEEE80211_IS_MULTICAST(mic->iev_dst);
625 wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE,
631 ifm = (struct if_msghdr *) rtm;
632 if (ifm->ifm_index != drv->ifindex)
634 if ((rtm->rtm_flags & RTF_UP) == 0) {
635 strlcpy(event.interface_status.ifname, drv->ifname,
636 sizeof(event.interface_status.ifname));
637 event.interface_status.ievent = EVENT_INTERFACE_REMOVED;
638 wpa_printf(MSG_DEBUG, "RTM_IFINFO: Interface '%s' DOWN",
639 event.interface_status.ifname);
640 wpa_supplicant_event(ctx, EVENT_INTERFACE_STATUS, &event);
647 getmaxrate(const uint8_t rates[15], uint8_t nrates)
651 for (i = 0; i < nrates; i++) {
652 int rate = rates[i] & IEEE80211_RATE_VAL;
659 /* unalligned little endian access */
660 #define LE_READ_4(p) \
662 ((((const u_int8_t *)(p))[0] ) | \
663 (((const u_int8_t *)(p))[1] << 8) | \
664 (((const u_int8_t *)(p))[2] << 16) | \
665 (((const u_int8_t *)(p))[3] << 24)))
668 iswpaoui(const u_int8_t *frm)
670 return frm[1] > 3 && LE_READ_4(frm+2) == ((WPA_OUI_TYPE<<24)|WPA_OUI);
675 wpa_driver_bsd_add_scan_entry(struct wpa_scan_results *res,
676 struct ieee80211req_scan_result *sr)
678 struct wpa_scan_res *result, **tmp;
682 extra_len = 2 + sr->isr_ssid_len;
683 extra_len += 2 + sr->isr_nrates;
684 extra_len += 3; /* ERP IE */
685 extra_len += sr->isr_ie_len;
687 result = os_zalloc(sizeof(*result) + extra_len);
690 os_memcpy(result->bssid, sr->isr_bssid, ETH_ALEN);
691 result->freq = sr->isr_freq;
692 result->beacon_int = sr->isr_intval;
693 result->caps = sr->isr_capinfo;
694 result->qual = sr->isr_rssi;
695 result->noise = sr->isr_noise;
697 pos = (u8 *)(result + 1);
699 *pos++ = WLAN_EID_SSID;
700 *pos++ = sr->isr_ssid_len;
701 os_memcpy(pos, sr + 1, sr->isr_ssid_len);
702 pos += sr->isr_ssid_len;
705 * Deal all rates as supported rate.
706 * Because net80211 doesn't report extended supported rate or not.
708 *pos++ = WLAN_EID_SUPP_RATES;
709 *pos++ = sr->isr_nrates;
710 os_memcpy(pos, sr->isr_rates, sr->isr_nrates);
711 pos += sr->isr_nrates;
713 *pos++ = WLAN_EID_ERP_INFO;
715 *pos++ = sr->isr_erp;
717 os_memcpy(pos, (u8 *)(sr + 1) + sr->isr_ssid_len, sr->isr_ie_len);
718 pos += sr->isr_ie_len;
720 result->ie_len = pos - (u8 *)(result + 1);
722 tmp = os_realloc(res->res,
723 (res->num + 1) * sizeof(struct wpa_scan_res *));
728 tmp[res->num++] = result;
732 static struct wpa_scan_results *
733 wpa_driver_bsd_get_scan_results2(void *priv)
735 struct ieee80211req_scan_result *sr;
736 struct wpa_scan_results *res;
738 uint8_t buf[24*1024], *pos;
740 len = get80211var(priv, IEEE80211_IOC_SCAN_RESULTS, buf, 24*1024);
744 res = os_zalloc(sizeof(*res));
750 while (rest >= sizeof(struct ieee80211req_scan_result)) {
751 sr = (struct ieee80211req_scan_result *)pos;
752 wpa_driver_bsd_add_scan_entry(res, sr);
757 wpa_printf(MSG_DEBUG, "Received %d bytes of scan results (%lu BSSes)",
758 len, (unsigned long)res->num);
764 #define GETPARAM(drv, param, v) \
765 (((v) = get80211param(drv, param)) != -1)
766 #define IEEE80211_C_BGSCAN 0x20000000
769 * Set the scan cache valid threshold to 1.5 x bg scan interval
770 * to force all scan requests to consult the cache unless they
771 * explicitly bypass it.
774 setscanvalid(struct wpa_driver_bsd_data *drv)
776 int bgscan, scanvalid;
778 if (!GETPARAM(drv, IEEE80211_IOC_SCANVALID, drv->prev_scanvalid) ||
779 !GETPARAM(drv, IEEE80211_IOC_BGSCAN_INTERVAL, bgscan))
781 scanvalid = 3*bgscan/2;
782 return (drv->prev_scanvalid < scanvalid) ?
783 set80211param(drv, IEEE80211_IOC_SCANVALID, scanvalid) : 0;
787 wpa_driver_bsd_init(void *ctx, const char *ifname)
789 struct wpa_driver_bsd_data *drv;
790 struct ieee80211_devcaps_req devcaps;
793 drv = malloc(sizeof(*drv));
796 memset(drv, 0, sizeof(*drv));
798 * NB: We require the interface name be mappable to an index.
799 * This implies we do not support having wpa_supplicant
800 * wait for an interface to appear. This seems ok; that
801 * doesn't belong here; it's really the job of devd.
803 drv->ifindex = if_nametoindex(ifname);
804 if (drv->ifindex == 0) {
805 wpa_printf(MSG_DEBUG, "%s: interface %s does not exist",
809 drv->sock = socket(PF_INET, SOCK_DGRAM, 0);
813 strncpy(drv->ifname, ifname, sizeof(drv->ifname));
816 * Mark the interface as down to ensure wpa_supplicant has exclusive
817 * access to the net80211 state machine, do this before opening the
818 * route socket to avoid a false event that the interface disappeared.
820 if (getifflags(drv, &flags) == 0)
821 (void) setifflags(drv, flags &~ IFF_UP);
823 drv->route = socket(PF_ROUTE, SOCK_RAW, 0);
826 eloop_register_read_sock(drv->route,
827 wpa_driver_bsd_event_receive, ctx, drv);
829 if (get80211var(drv, IEEE80211_IOC_DEVCAPS, &devcaps, sizeof(devcaps)) < 0) {
830 wpa_printf(MSG_DEBUG,
831 "%s: failed to get device capabilities: %s",
832 __func__, strerror(errno));
835 drv->drivercaps = devcaps.dc_drivercaps;
836 drv->cryptocaps = devcaps.dc_cryptocaps;
838 if (!GETPARAM(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming)) {
839 wpa_printf(MSG_DEBUG, "%s: failed to get roaming state: %s",
840 __func__, strerror(errno));
843 if (!GETPARAM(drv, IEEE80211_IOC_PRIVACY, drv->prev_privacy)) {
844 wpa_printf(MSG_DEBUG, "%s: failed to get privacy state: %s",
845 __func__, strerror(errno));
848 if (!GETPARAM(drv, IEEE80211_IOC_WPA, drv->prev_wpa)) {
849 wpa_printf(MSG_DEBUG, "%s: failed to get wpa state: %s",
850 __func__, strerror(errno));
853 if (set80211param(drv, IEEE80211_IOC_ROAMING, IEEE80211_ROAMING_MANUAL) < 0) {
854 wpa_printf(MSG_DEBUG, "%s: failed to set wpa_supplicant-based "
855 "roaming: %s", __func__, strerror(errno));
858 if (drv->drivercaps & IEEE80211_C_BGSCAN) {
860 * Driver does background scanning; force the scan valid
861 * setting to 1.5 x bg scan interval so the scan cache is
862 * always consulted before we force a foreground scan.
864 if (setscanvalid(drv) < 0) {
865 wpa_printf(MSG_DEBUG,
866 "%s: warning, failed to set scanvalid, scanning "
867 "may be suboptimal: %s", __func__, strerror(errno));
870 if (set80211param(drv, IEEE80211_IOC_WPA, 1+2) < 0) {
871 wpa_printf(MSG_DEBUG, "%s: failed to enable WPA support %s",
872 __func__, strerror(errno));
875 drv->opmode = get80211opmode(drv);
887 wpa_driver_bsd_deinit(void *priv)
889 struct wpa_driver_bsd_data *drv = priv;
892 /* NB: mark interface down */
893 if (getifflags(drv, &flags) == 0)
894 (void) setifflags(drv, flags &~ IFF_UP);
896 wpa_driver_bsd_set_wpa_internal(drv, drv->prev_wpa, drv->prev_privacy);
897 if (set80211param(drv, IEEE80211_IOC_ROAMING, drv->prev_roaming) < 0) {
898 /* NB: don't whinge if device ejected or equivalent */
900 wpa_printf(MSG_DEBUG, "%s: failed to restore roaming "
903 if (drv->drivercaps & IEEE80211_C_BGSCAN) {
904 /* XXX check return value */
905 (void) set80211param(drv, IEEE80211_IOC_SCANVALID,
906 drv->prev_scanvalid);
909 (void) close(drv->route); /* ioctl socket */
910 (void) close(drv->sock); /* event socket */
915 struct wpa_driver_ops wpa_driver_bsd_ops = {
917 .desc = "BSD 802.11 support (Atheros, etc.)",
918 .init = wpa_driver_bsd_init,
919 .deinit = wpa_driver_bsd_deinit,
920 .get_bssid = wpa_driver_bsd_get_bssid,
921 .get_ssid = wpa_driver_bsd_get_ssid,
922 .set_key = wpa_driver_bsd_set_key,
923 .set_countermeasures = wpa_driver_bsd_set_countermeasures,
924 .scan2 = wpa_driver_bsd_scan,
925 .get_scan_results2 = wpa_driver_bsd_get_scan_results2,
926 .deauthenticate = wpa_driver_bsd_deauthenticate,
927 .disassociate = wpa_driver_bsd_disassociate,
928 .associate = wpa_driver_bsd_associate,