2 * Driver interaction with Linux Host AP driver
3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
10 #include <sys/ioctl.h>
12 #include "linux_wext.h"
15 #include "driver_wext.h"
17 #include "driver_hostap.h"
20 #include <net/if_arp.h>
21 #include <netpacket/packet.h>
23 #include "priv_netlink.h"
25 #include "linux_ioctl.h"
26 #include "common/ieee802_11_defs.h"
27 #include "common/ieee802_11_common.h"
30 /* MTU to be set for the wlan#ap device; this is mainly needed for IEEE 802.1X
31 * frames that might be longer than normal default MTU and they are not
33 #define HOSTAPD_MTU 2290
35 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
37 struct hostap_driver_data {
38 struct hostapd_data *hapd;
40 char iface[IFNAMSIZ + 1];
41 int sock; /* raw packet socket for driver access */
42 int ioctl_sock; /* socket for ioctl() use */
43 struct netlink_data *netlink;
48 size_t generic_ie_len;
54 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
56 static int hostap_set_iface_flags(void *priv, int dev_up);
58 static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
61 struct ieee80211_hdr *hdr;
65 union wpa_event_data event;
67 if (len < sizeof(struct ieee80211_hdr))
70 hdr = (struct ieee80211_hdr *) buf;
71 fc = le_to_host16(hdr->frame_control);
73 if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
74 printf("Not ToDS data frame (fc=0x%04x)\n", fc);
79 os_memset(&event, 0, sizeof(event));
80 event.rx_from_unknown.bssid = get_hdr_bssid(hdr, len);
81 event.rx_from_unknown.addr = sa;
82 wpa_supplicant_event(drv->hapd, EVENT_RX_FROM_UNKNOWN, &event);
84 pos = (u8 *) (hdr + 1);
85 left = len - sizeof(*hdr);
87 if (left < sizeof(rfc1042_header)) {
88 printf("Too short data frame\n");
92 if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
93 printf("Data frame with no RFC1042 header\n");
96 pos += sizeof(rfc1042_header);
97 left -= sizeof(rfc1042_header);
100 printf("No ethertype in data frame\n");
104 ethertype = WPA_GET_BE16(pos);
109 drv_event_eapol_rx(drv->hapd, sa, pos, left);
113 printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
119 static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
122 struct ieee80211_hdr *hdr;
124 union wpa_event_data event;
126 hdr = (struct ieee80211_hdr *) buf;
127 fc = le_to_host16(hdr->frame_control);
129 os_memset(&event, 0, sizeof(event));
130 event.tx_status.type = WLAN_FC_GET_TYPE(fc);
131 event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
132 event.tx_status.dst = hdr->addr1;
133 event.tx_status.data = buf;
134 event.tx_status.data_len = len;
135 event.tx_status.ack = ok;
136 wpa_supplicant_event(drv->hapd, EVENT_TX_STATUS, &event);
140 static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
142 struct ieee80211_hdr *hdr;
144 size_t data_len = len;
146 union wpa_event_data event;
148 /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
149 * these to user space */
151 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
152 (unsigned long) len);
156 hdr = (struct ieee80211_hdr *) buf;
157 fc = le_to_host16(hdr->frame_control);
158 type = WLAN_FC_GET_TYPE(fc);
159 stype = WLAN_FC_GET_STYPE(fc);
161 if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
162 wpa_hexdump(MSG_MSGDUMP, "Received management frame",
166 ver = fc & WLAN_FC_PVER;
168 /* protocol version 2 is reserved for indicating ACKed frame (TX
169 * callbacks), and version 1 for indicating failed frame (no ACK, TX
171 if (ver == 1 || ver == 2) {
172 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
174 } else if (ver != 0) {
175 printf("unknown protocol version %d\n", ver);
180 case WLAN_FC_TYPE_MGMT:
181 os_memset(&event, 0, sizeof(event));
182 event.rx_mgmt.frame = buf;
183 event.rx_mgmt.frame_len = data_len;
184 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
186 case WLAN_FC_TYPE_CTRL:
187 wpa_printf(MSG_DEBUG, "CTRL");
189 case WLAN_FC_TYPE_DATA:
190 wpa_printf(MSG_DEBUG, "DATA");
191 handle_data(drv, buf, data_len, stype);
194 wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
200 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
202 struct hostap_driver_data *drv = eloop_ctx;
204 unsigned char buf[3000];
206 len = recv(sock, buf, sizeof(buf), 0);
208 wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
212 handle_frame(drv, buf, len);
216 static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
219 struct sockaddr_ll addr;
221 drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
223 wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
228 if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
229 wpa_printf(MSG_ERROR, "Could not register read socket");
233 memset(&ifr, 0, sizeof(ifr));
234 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface);
235 if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
236 wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
241 if (hostap_set_iface_flags(drv, 1)) {
245 memset(&addr, 0, sizeof(addr));
246 addr.sll_family = AF_PACKET;
247 addr.sll_ifindex = ifr.ifr_ifindex;
248 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
251 if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
252 wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
256 return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr);
260 static int hostap_send_mlme(void *priv, const u8 *msg, size_t len, int noack,
263 struct hostap_driver_data *drv = priv;
264 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
267 /* Request TX callback */
268 hdr->frame_control |= host_to_le16(BIT(1));
269 res = send(drv->sock, msg, len, 0);
270 hdr->frame_control &= ~host_to_le16(BIT(1));
276 static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
277 size_t data_len, int encrypt, const u8 *own_addr,
280 struct hostap_driver_data *drv = priv;
281 struct ieee80211_hdr *hdr;
286 len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
287 hdr = os_zalloc(len);
289 printf("malloc() failed for hostapd_send_data(len=%lu)\n",
290 (unsigned long) len);
295 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
296 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
298 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
299 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
300 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
301 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
303 pos = (u8 *) (hdr + 1);
304 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
305 pos += sizeof(rfc1042_header);
306 *((u16 *) pos) = htons(ETH_P_PAE);
308 memcpy(pos, data, data_len);
310 res = hostap_send_mlme(drv, (u8 *) hdr, len, 0, 0);
312 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
314 (unsigned long) len, errno, strerror(errno));
322 static int hostap_sta_set_flags(void *priv, const u8 *addr,
323 unsigned int total_flags, unsigned int flags_or,
324 unsigned int flags_and)
326 struct hostap_driver_data *drv = priv;
327 struct prism2_hostapd_param param;
329 if (flags_or & WPA_STA_AUTHORIZED)
330 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
331 if (!(flags_and & WPA_STA_AUTHORIZED))
335 memset(¶m, 0, sizeof(param));
336 param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
337 memcpy(param.sta_addr, addr, ETH_ALEN);
338 param.u.set_flags_sta.flags_or = flags_or;
339 param.u.set_flags_sta.flags_and = flags_and;
340 return hostapd_ioctl(drv, ¶m, sizeof(param));
344 static int hostap_set_iface_flags(void *priv, int dev_up)
346 struct hostap_driver_data *drv = priv;
348 char ifname[IFNAMSIZ];
350 os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface);
351 if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0)
355 memset(&ifr, 0, sizeof(ifr));
356 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
357 ifr.ifr_mtu = HOSTAPD_MTU;
358 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
360 "Setting MTU failed - trying to survive with current value: ioctl[SIOCSIFMTU]: %s",
369 static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
372 struct hostap_driver_data *drv = priv;
375 memset(&iwr, 0, sizeof(iwr));
376 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
377 iwr.u.data.pointer = (caddr_t) param;
378 iwr.u.data.length = len;
380 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
381 wpa_printf(MSG_ERROR, "ioctl[PRISM2_IOCTL_HOSTAPD]: %s",
390 static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
391 enum wpa_alg alg, const u8 *addr,
392 int key_idx, int set_tx,
393 const u8 *seq, size_t seq_len,
394 const u8 *key, size_t key_len)
396 struct hostap_driver_data *drv = priv;
397 struct prism2_hostapd_param *param;
402 blen = sizeof(*param) + key_len;
403 buf = os_zalloc(blen);
407 param = (struct prism2_hostapd_param *) buf;
408 param->cmd = PRISM2_SET_ENCRYPTION;
410 memset(param->sta_addr, 0xff, ETH_ALEN);
412 memcpy(param->sta_addr, addr, ETH_ALEN);
415 os_strlcpy((char *) param->u.crypt.alg, "NONE",
416 HOSTAP_CRYPT_ALG_NAME_LEN);
419 os_strlcpy((char *) param->u.crypt.alg, "WEP",
420 HOSTAP_CRYPT_ALG_NAME_LEN);
423 os_strlcpy((char *) param->u.crypt.alg, "TKIP",
424 HOSTAP_CRYPT_ALG_NAME_LEN);
427 os_strlcpy((char *) param->u.crypt.alg, "CCMP",
428 HOSTAP_CRYPT_ALG_NAME_LEN);
434 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
435 param->u.crypt.idx = key_idx;
436 param->u.crypt.key_len = key_len;
437 memcpy((u8 *) (param + 1), key, key_len);
439 if (hostapd_ioctl(drv, param, blen)) {
440 printf("Failed to set encryption.\n");
449 static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
452 struct hostap_driver_data *drv = priv;
453 struct prism2_hostapd_param *param;
458 blen = sizeof(*param) + 32;
459 buf = os_zalloc(blen);
463 param = (struct prism2_hostapd_param *) buf;
464 param->cmd = PRISM2_GET_ENCRYPTION;
466 os_memset(param->sta_addr, 0xff, ETH_ALEN);
468 os_memcpy(param->sta_addr, addr, ETH_ALEN);
469 param->u.crypt.idx = idx;
471 if (hostapd_ioctl(drv, param, blen)) {
472 printf("Failed to get encryption.\n");
475 os_memcpy(seq, param->u.crypt.seq, 8);
483 static int hostap_ioctl_prism2param(void *priv, int param, int value)
485 struct hostap_driver_data *drv = priv;
489 memset(&iwr, 0, sizeof(iwr));
490 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
491 i = (int *) iwr.u.name;
495 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
496 wpa_printf(MSG_ERROR, "ioctl[PRISM2_IOCTL_PRISM2_PARAM]: %s",
505 static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
507 struct hostap_driver_data *drv = priv;
508 int enabled = params->enabled;
510 /* enable kernel driver support for IEEE 802.1X */
511 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
512 printf("Could not setup IEEE 802.1X support in kernel driver."
520 /* use host driver implementation of encryption to allow
521 * individual keys and passing plaintext EAPOL frames */
522 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
523 hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
524 printf("Could not setup host-based encryption in kernel "
533 static int hostap_set_privacy(void *priv, int enabled)
535 struct hostap_drvier_data *drv = priv;
537 return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
542 static int hostap_set_ssid(void *priv, const u8 *buf, int len)
544 struct hostap_driver_data *drv = priv;
547 memset(&iwr, 0, sizeof(iwr));
548 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
549 iwr.u.essid.flags = 1; /* SSID active */
550 iwr.u.essid.pointer = (caddr_t) buf;
551 iwr.u.essid.length = len + 1;
553 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
554 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWESSID,len=%d]: %s",
555 len, strerror(errno));
563 static int hostap_flush(void *priv)
565 struct hostap_driver_data *drv = priv;
566 struct prism2_hostapd_param param;
568 memset(¶m, 0, sizeof(param));
569 param.cmd = PRISM2_HOSTAPD_FLUSH;
570 return hostapd_ioctl(drv, ¶m, sizeof(param));
574 static int hostap_read_sta_data(void *priv,
575 struct hostap_sta_driver_data *data,
578 struct hostap_driver_data *drv = priv;
579 char buf[1024], line[128], *pos;
583 memset(data, 0, sizeof(*data));
584 snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
585 drv->iface, MAC2STR(addr));
590 /* Need to read proc file with in one piece, so use large enough
592 setbuffer(f, buf, sizeof(buf));
594 while (fgets(line, sizeof(line), f)) {
595 pos = strchr(line, '=');
599 val = strtoul(pos, NULL, 10);
600 if (strcmp(line, "rx_packets") == 0)
601 data->rx_packets = val;
602 else if (strcmp(line, "tx_packets") == 0)
603 data->tx_packets = val;
604 else if (strcmp(line, "rx_bytes") == 0)
605 data->rx_bytes = val;
606 else if (strcmp(line, "tx_bytes") == 0)
607 data->tx_bytes = val;
616 static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params)
618 struct hostap_driver_data *drv = priv;
619 struct prism2_hostapd_param param;
620 int tx_supp_rates = 0;
623 #define WLAN_RATE_1M BIT(0)
624 #define WLAN_RATE_2M BIT(1)
625 #define WLAN_RATE_5M5 BIT(2)
626 #define WLAN_RATE_11M BIT(3)
628 for (i = 0; i < params->supp_rates_len; i++) {
629 if ((params->supp_rates[i] & 0x7f) == 2)
630 tx_supp_rates |= WLAN_RATE_1M;
631 if ((params->supp_rates[i] & 0x7f) == 4)
632 tx_supp_rates |= WLAN_RATE_2M;
633 if ((params->supp_rates[i] & 0x7f) == 11)
634 tx_supp_rates |= WLAN_RATE_5M5;
635 if ((params->supp_rates[i] & 0x7f) == 22)
636 tx_supp_rates |= WLAN_RATE_11M;
639 memset(¶m, 0, sizeof(param));
640 param.cmd = PRISM2_HOSTAPD_ADD_STA;
641 memcpy(param.sta_addr, params->addr, ETH_ALEN);
642 param.u.add_sta.aid = params->aid;
643 param.u.add_sta.capability = params->capability;
644 param.u.add_sta.tx_supp_rates = tx_supp_rates;
645 return hostapd_ioctl(drv, ¶m, sizeof(param));
649 static int hostap_sta_remove(void *priv, const u8 *addr)
651 struct hostap_driver_data *drv = priv;
652 struct prism2_hostapd_param param;
654 hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
656 memset(¶m, 0, sizeof(param));
657 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
658 memcpy(param.sta_addr, addr, ETH_ALEN);
659 if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
660 printf("Could not remove station from kernel driver.\n");
667 static int hostap_get_inact_sec(void *priv, const u8 *addr)
669 struct hostap_driver_data *drv = priv;
670 struct prism2_hostapd_param param;
672 memset(¶m, 0, sizeof(param));
673 param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
674 memcpy(param.sta_addr, addr, ETH_ALEN);
675 if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
679 return param.u.get_info_sta.inactive_sec;
683 static int hostap_sta_clear_stats(void *priv, const u8 *addr)
685 struct hostap_driver_data *drv = priv;
686 struct prism2_hostapd_param param;
688 memset(¶m, 0, sizeof(param));
689 param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
690 memcpy(param.sta_addr, addr, ETH_ALEN);
691 if (hostapd_ioctl(drv, ¶m, sizeof(param))) {
699 static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
701 struct prism2_hostapd_param *param;
703 size_t blen, elem_len;
705 elem_len = drv->generic_ie_len + drv->wps_ie_len;
706 blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
707 if (blen < sizeof(*param))
708 blen = sizeof(*param);
710 param = os_zalloc(blen);
714 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
715 param->u.generic_elem.len = elem_len;
716 if (drv->generic_ie) {
717 os_memcpy(param->u.generic_elem.data, drv->generic_ie,
718 drv->generic_ie_len);
721 os_memcpy(¶m->u.generic_elem.data[drv->generic_ie_len],
722 drv->wps_ie, drv->wps_ie_len);
724 wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
725 param->u.generic_elem.data, elem_len);
726 res = hostapd_ioctl(drv, param, blen);
734 static int hostap_set_generic_elem(void *priv,
735 const u8 *elem, size_t elem_len)
737 struct hostap_driver_data *drv = priv;
739 os_free(drv->generic_ie);
740 drv->generic_ie = NULL;
741 drv->generic_ie_len = 0;
743 drv->generic_ie = os_malloc(elem_len);
744 if (drv->generic_ie == NULL)
746 os_memcpy(drv->generic_ie, elem, elem_len);
747 drv->generic_ie_len = elem_len;
750 return hostapd_ioctl_set_generic_elem(drv);
754 static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
755 const struct wpabuf *proberesp,
756 const struct wpabuf *assocresp)
758 struct hostap_driver_data *drv = priv;
761 * Host AP driver supports only one set of extra IEs, so we need to
762 * use the Probe Response IEs also for Beacon frames since they include
766 os_free(drv->wps_ie);
770 drv->wps_ie = os_malloc(wpabuf_len(proberesp));
771 if (drv->wps_ie == NULL)
773 os_memcpy(drv->wps_ie, wpabuf_head(proberesp),
774 wpabuf_len(proberesp));
775 drv->wps_ie_len = wpabuf_len(proberesp);
778 return hostapd_ioctl_set_generic_elem(drv);
783 hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
786 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
788 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
791 pos = strstr(custom, "addr=");
793 wpa_printf(MSG_DEBUG,
794 "MLME-MICHAELMICFAILURE.indication "
795 "without sender address ignored");
799 if (hwaddr_aton(pos, addr) == 0) {
800 union wpa_event_data data;
801 os_memset(&data, 0, sizeof(data));
802 data.michael_mic_failure.unicast = 1;
803 data.michael_mic_failure.src = addr;
804 wpa_supplicant_event(drv->hapd,
805 EVENT_MICHAEL_MIC_FAILURE, &data);
807 wpa_printf(MSG_DEBUG,
808 "MLME-MICHAELMICFAILURE.indication "
809 "with invalid MAC address");
815 static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
818 struct iw_event iwe_buf, *iwe = &iwe_buf;
819 char *pos, *end, *custom, *buf;
824 while (pos + IW_EV_LCP_LEN <= end) {
825 /* Event data may be unaligned, so make a local, aligned copy
826 * before processing. */
827 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
828 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
830 if (iwe->len <= IW_EV_LCP_LEN)
833 custom = pos + IW_EV_POINT_LEN;
834 if (drv->we_version > 18 &&
835 (iwe->cmd == IWEVMICHAELMICFAILURE ||
836 iwe->cmd == IWEVCUSTOM)) {
837 /* WE-19 removed the pointer from struct iw_point */
838 char *dpos = (char *) &iwe_buf.u.data.length;
839 int dlen = dpos - (char *) &iwe_buf;
840 memcpy(dpos, pos + IW_EV_LCP_LEN,
841 sizeof(struct iw_event) - dlen);
843 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
844 custom += IW_EV_POINT_OFF;
849 if (custom + iwe->u.data.length > end)
851 buf = malloc(iwe->u.data.length + 1);
854 memcpy(buf, custom, iwe->u.data.length);
855 buf[iwe->u.data.length] = '\0';
856 hostapd_wireless_event_wireless_custom(drv, buf);
866 static void hostapd_wireless_event_rtm_newlink(void *ctx,
867 struct ifinfomsg *ifi,
870 struct hostap_driver_data *drv = ctx;
871 int attrlen, rta_len;
874 /* TODO: use ifi->ifi_index to filter out wireless events from other
878 attr = (struct rtattr *) buf;
880 rta_len = RTA_ALIGN(sizeof(struct rtattr));
881 while (RTA_OK(attr, attrlen)) {
882 if (attr->rta_type == IFLA_WIRELESS) {
883 hostapd_wireless_event_wireless(
884 drv, ((char *) attr) + rta_len,
885 attr->rta_len - rta_len);
887 attr = RTA_NEXT(attr, attrlen);
892 static int hostap_get_we_version(struct hostap_driver_data *drv)
894 struct iw_range *range;
902 * Use larger buffer than struct iw_range in order to allow the
903 * structure to grow in the future.
905 buflen = sizeof(struct iw_range) + 500;
906 range = os_zalloc(buflen);
910 memset(&iwr, 0, sizeof(iwr));
911 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
912 iwr.u.data.pointer = (caddr_t) range;
913 iwr.u.data.length = buflen;
915 minlen = ((char *) &range->enc_capa) - (char *) range +
916 sizeof(range->enc_capa);
918 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
919 wpa_printf(MSG_ERROR, "ioctl[SIOCGIWRANGE]: %s",
923 } else if (iwr.u.data.length >= minlen &&
924 range->we_version_compiled >= 18) {
925 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
926 "WE(source)=%d enc_capa=0x%x",
927 range->we_version_compiled,
928 range->we_version_source,
930 drv->we_version = range->we_version_compiled;
938 static int hostap_wireless_event_init(struct hostap_driver_data *drv)
940 struct netlink_config *cfg;
942 hostap_get_we_version(drv);
944 cfg = os_zalloc(sizeof(*cfg));
948 cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
949 drv->netlink = netlink_init(cfg);
950 if (drv->netlink == NULL) {
959 static void * hostap_init(struct hostapd_data *hapd,
960 struct wpa_init_params *params)
962 struct hostap_driver_data *drv;
964 drv = os_zalloc(sizeof(struct hostap_driver_data));
966 printf("Could not allocate memory for hostapd driver data\n");
971 drv->ioctl_sock = drv->sock = -1;
972 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
974 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
975 if (drv->ioctl_sock < 0) {
976 wpa_printf(MSG_ERROR, "socket[PF_INET,SOCK_DGRAM]: %s",
982 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
983 wpa_printf(MSG_ERROR,
984 "Could not enable hostapd mode for interface %s",
986 close(drv->ioctl_sock);
991 if (hostap_init_sockets(drv, params->own_addr) ||
992 hostap_wireless_event_init(drv)) {
993 close(drv->ioctl_sock);
1002 static void hostap_driver_deinit(void *priv)
1004 struct hostap_driver_data *drv = priv;
1006 netlink_deinit(drv->netlink);
1007 (void) hostap_set_iface_flags(drv, 0);
1008 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 0);
1009 (void) hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD_STA, 0);
1011 if (drv->ioctl_sock >= 0)
1012 close(drv->ioctl_sock);
1017 os_free(drv->generic_ie);
1018 os_free(drv->wps_ie);
1024 static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
1027 struct hostap_driver_data *drv = priv;
1028 struct ieee80211_mgmt mgmt;
1030 if (is_broadcast_ether_addr(addr)) {
1032 * New Prism2.5/3 STA firmware versions seem to have issues
1033 * with this broadcast deauth frame. This gets the firmware in
1034 * odd state where nothing works correctly, so let's skip
1035 * sending this for the hostap driver.
1040 memset(&mgmt, 0, sizeof(mgmt));
1041 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1042 WLAN_FC_STYPE_DEAUTH);
1043 memcpy(mgmt.da, addr, ETH_ALEN);
1044 memcpy(mgmt.sa, own_addr, ETH_ALEN);
1045 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1046 mgmt.u.deauth.reason_code = host_to_le16(reason);
1047 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1048 sizeof(mgmt.u.deauth), 0, 0);
1052 static int hostap_set_freq(void *priv, struct hostapd_freq_params *freq)
1054 struct hostap_driver_data *drv = priv;
1057 os_memset(&iwr, 0, sizeof(iwr));
1058 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1059 iwr.u.freq.m = freq->channel;
1062 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
1063 wpa_printf(MSG_ERROR, "ioctl[SIOCSIWFREQ]: %s",
1072 static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
1075 struct hostap_driver_data *drv = priv;
1076 struct ieee80211_mgmt mgmt;
1078 memset(&mgmt, 0, sizeof(mgmt));
1079 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1080 WLAN_FC_STYPE_DISASSOC);
1081 memcpy(mgmt.da, addr, ETH_ALEN);
1082 memcpy(mgmt.sa, own_addr, ETH_ALEN);
1083 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1084 mgmt.u.disassoc.reason_code = host_to_le16(reason);
1085 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1086 sizeof(mgmt.u.disassoc), 0, 0);
1090 static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
1094 struct hostapd_hw_modes *mode;
1096 const short chan2freq[14] = {
1097 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1098 2447, 2452, 2457, 2462, 2467, 2472, 2484
1101 mode = os_zalloc(sizeof(struct hostapd_hw_modes));
1108 mode->mode = HOSTAPD_MODE_IEEE80211B;
1109 mode->num_channels = 14;
1110 mode->num_rates = 4;
1112 clen = mode->num_channels * sizeof(struct hostapd_channel_data);
1113 rlen = mode->num_rates * sizeof(int);
1115 mode->channels = os_zalloc(clen);
1116 mode->rates = os_zalloc(rlen);
1117 if (mode->channels == NULL || mode->rates == NULL) {
1118 os_free(mode->channels);
1119 os_free(mode->rates);
1124 for (i = 0; i < 14; i++) {
1125 mode->channels[i].chan = i + 1;
1126 mode->channels[i].freq = chan2freq[i];
1127 /* TODO: Get allowed channel list from the driver */
1129 mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
1132 mode->rates[0] = 10;
1133 mode->rates[1] = 20;
1134 mode->rates[2] = 55;
1135 mode->rates[3] = 110;
1141 static void wpa_driver_hostap_poll_client(void *priv, const u8 *own_addr,
1142 const u8 *addr, int qos)
1144 struct ieee80211_hdr hdr;
1146 os_memset(&hdr, 0, sizeof(hdr));
1149 * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
1150 * but it is apparently not retried so TX Exc events
1151 * are not received for it.
1152 * This is the reason the driver overrides the default
1155 hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA,
1156 WLAN_FC_STYPE_DATA);
1158 hdr.frame_control |=
1159 host_to_le16(WLAN_FC_FROMDS);
1160 os_memcpy(hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
1161 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
1162 os_memcpy(hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
1164 hostap_send_mlme(priv, (u8 *)&hdr, sizeof(hdr), 0, 0);
1168 const struct wpa_driver_ops wpa_driver_hostap_ops = {
1170 .desc = "Host AP driver (Intersil Prism2/2.5/3)",
1171 .set_key = wpa_driver_hostap_set_key,
1172 .hapd_init = hostap_init,
1173 .hapd_deinit = hostap_driver_deinit,
1174 .set_ieee8021x = hostap_set_ieee8021x,
1175 .set_privacy = hostap_set_privacy,
1176 .get_seqnum = hostap_get_seqnum,
1177 .flush = hostap_flush,
1178 .set_generic_elem = hostap_set_generic_elem,
1179 .read_sta_data = hostap_read_sta_data,
1180 .hapd_send_eapol = hostap_send_eapol,
1181 .sta_set_flags = hostap_sta_set_flags,
1182 .sta_deauth = hostap_sta_deauth,
1183 .sta_disassoc = hostap_sta_disassoc,
1184 .sta_remove = hostap_sta_remove,
1185 .hapd_set_ssid = hostap_set_ssid,
1186 .send_mlme = hostap_send_mlme,
1187 .sta_add = hostap_sta_add,
1188 .get_inact_sec = hostap_get_inact_sec,
1189 .sta_clear_stats = hostap_sta_clear_stats,
1190 .get_hw_feature_data = hostap_get_hw_feature_data,
1191 .set_ap_wps_ie = hostap_set_ap_wps_ie,
1192 .set_freq = hostap_set_freq,
1193 .poll_client = wpa_driver_hostap_poll_client,