2 * hostapd / Kernel driver communication via nl80211
3 * Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
4 * Copyright (c) 2003-2004, Instant802 Networks, Inc.
5 * Copyright (c) 2005-2006, Devicescape Software, Inc.
6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * Alternatively, this software may be distributed under the terms of BSD
15 * See README and COPYING for more details.
20 #include <sys/ioctl.h>
21 #include <netlink/genl/genl.h>
22 #include <netlink/genl/family.h>
23 #include <netlink/genl/ctrl.h>
24 #include <netlink/msg.h>
25 #include <netlink/attr.h>
26 #include "nl80211_copy.h"
28 #include <netpacket/packet.h>
29 #include "wireless_copy.h"
30 #include <linux/filter.h>
31 #include <net/if_arp.h>
35 #include "ieee802_1x.h"
37 #include "ieee802_11.h"
39 #include "hw_features.h"
42 #include "radiotap_iter.h"
45 /* libnl 2.0 compatibility code */
46 #define nl_handle_alloc_cb nl_socket_alloc_cb
47 #define nl_handle_destroy nl_socket_free
48 #endif /* CONFIG_LIBNL20 */
50 enum ieee80211_msg_type {
51 ieee80211_msg_normal = 0,
52 ieee80211_msg_tx_callback_ack = 1,
53 ieee80211_msg_tx_callback_fail = 2,
56 struct i802_driver_data {
57 struct hostapd_data *hapd;
59 char iface[IFNAMSIZ + 1];
61 int ioctl_sock; /* socket for ioctl() use */
62 int wext_sock; /* socket for wireless events */
63 int eapol_sock; /* socket for EAPOL frames */
64 int monitor_sock; /* socket for monitor */
67 int default_if_indices[16];
72 struct nl_handle *nl_handle;
73 struct nl_cache *nl_cache;
75 struct genl_family *nl80211;
76 int dtim_period, beacon_int;
77 unsigned int beacon_set:1;
78 unsigned int ieee802_1x_active:1;
85 static void add_ifidx(struct i802_driver_data *drv, int ifidx)
90 for (i = 0; i < drv->num_if_indices; i++) {
91 if (drv->if_indices[i] == 0) {
92 drv->if_indices[i] = ifidx;
97 if (drv->if_indices != drv->default_if_indices)
98 old = drv->if_indices;
102 drv->if_indices = realloc(old,
103 sizeof(int) * (drv->num_if_indices + 1));
104 if (!drv->if_indices) {
106 drv->if_indices = drv->default_if_indices;
108 drv->if_indices = old;
109 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
111 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
114 drv->if_indices[drv->num_if_indices] = ifidx;
115 drv->num_if_indices++;
119 static void del_ifidx(struct i802_driver_data *drv, int ifidx)
123 for (i = 0; i < drv->num_if_indices; i++) {
124 if (drv->if_indices[i] == ifidx) {
125 drv->if_indices[i] = 0;
132 static int have_ifidx(struct i802_driver_data *drv, int ifidx)
136 if (ifidx == drv->bridge)
139 for (i = 0; i < drv->num_if_indices; i++)
140 if (drv->if_indices[i] == ifidx)
148 static int ack_handler(struct nl_msg *msg, void *arg)
155 static int finish_handler(struct nl_msg *msg, void *arg)
162 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
170 static int send_and_recv_msgs(struct i802_driver_data *drv,
172 int (*valid_handler)(struct nl_msg *, void *),
178 cb = nl_cb_clone(drv->nl_cb);
182 err = nl_send_auto_complete(drv->nl_handle, msg);
188 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
189 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
190 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
193 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
194 valid_handler, valid_data);
197 nl_recvmsgs(drv->nl_handle, cb);
204 static int hostapd_set_iface_flags(struct i802_driver_data *drv,
205 const char *ifname, int dev_up)
209 if (drv->ioctl_sock < 0)
212 memset(&ifr, 0, sizeof(ifr));
213 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
215 if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
216 perror("ioctl[SIOCGIFFLAGS]");
217 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
223 ifr.ifr_flags |= IFF_UP;
225 ifr.ifr_flags &= ~IFF_UP;
227 if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
228 perror("ioctl[SIOCSIFFLAGS]");
236 static int nl_set_encr(int ifindex, struct i802_driver_data *drv,
237 const char *alg, const u8 *addr, int idx, const u8 *key,
238 size_t key_len, int txkey)
247 if (strcmp(alg, "none") == 0) {
248 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
249 0, NL80211_CMD_DEL_KEY, 0);
251 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
252 0, NL80211_CMD_NEW_KEY, 0);
253 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
254 if (strcmp(alg, "WEP") == 0) {
256 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
259 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
261 } else if (strcmp(alg, "TKIP") == 0)
262 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
263 else if (strcmp(alg, "CCMP") == 0)
264 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
265 else if (strcmp(alg, "IGTK") == 0)
266 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
268 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
269 "algorithm '%s'", __func__, alg);
276 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
277 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
278 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
280 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
285 * If we failed or don't need to set the default TX key (below),
288 if (ret || !txkey || addr)
295 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
296 0, NL80211_CMD_SET_KEY, 0);
297 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
298 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
299 if (strcmp(alg, "IGTK") == 0)
300 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
302 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
304 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
313 static int i802_set_encryption(const char *iface, void *priv, const char *alg,
314 const u8 *addr, int idx, const u8 *key,
315 size_t key_len, int txkey)
317 struct i802_driver_data *drv = priv;
320 ret = nl_set_encr(if_nametoindex(iface), drv, alg, addr, idx, key,
329 static inline int min_int(int a, int b)
337 static int get_key_handler(struct nl_msg *msg, void *arg)
339 struct nlattr *tb[NL80211_ATTR_MAX + 1];
340 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
342 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
343 genlmsg_attrlen(gnlh, 0), NULL);
346 * TODO: validate the key index and mac address!
347 * Otherwise, there's a race condition as soon as
348 * the kernel starts sending key notifications.
351 if (tb[NL80211_ATTR_KEY_SEQ])
352 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
353 min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
358 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
361 struct i802_driver_data *drv = priv;
368 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
369 0, NL80211_CMD_GET_KEY, 0);
372 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
373 NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
374 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
378 return send_and_recv_msgs(drv, msg, get_key_handler, seq);
384 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
387 struct i802_driver_data *drv = priv;
389 u8 rates[NL80211_MAX_SUPP_RATES];
397 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
398 NL80211_CMD_SET_BSS, 0);
400 for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
401 rates[rates_len++] = basic_rates[i] / 5;
403 NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
405 /* TODO: multi-BSS support */
406 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
408 return send_and_recv_msgs(drv, msg, NULL, NULL);
414 static int i802_send_frame(void *priv, const void *data, size_t len,
415 int encrypt, int flags)
418 0x00, 0x00, /* radiotap version */
419 0x0e, 0x00, /* radiotap length */
420 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
421 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
423 0x00, 0x00, /* RX and TX flags to indicate that */
424 0x00, 0x00, /* this is the injected frame directly */
426 struct i802_driver_data *drv = priv;
427 struct iovec iov[2] = {
429 .iov_base = &rtap_hdr,
430 .iov_len = sizeof(rtap_hdr),
433 .iov_base = (void*)data,
437 struct msghdr msg = {
448 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
450 return sendmsg(drv->monitor_sock, &msg, flags);
453 static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
456 struct ieee80211_mgmt *mgmt;
457 int do_not_encrypt = 0;
460 mgmt = (struct ieee80211_mgmt *) data;
461 fc = le_to_host16(mgmt->frame_control);
463 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
464 WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
466 * Only one of the authentication frame types is encrypted.
467 * In order for static WEP encryption to work properly (i.e.,
468 * to not encrypt the frame), we need to tell mac80211 about
469 * the frames that must not be encrypted.
471 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
472 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
473 if (auth_alg == WLAN_AUTH_OPEN ||
474 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_trans != 3))
478 return i802_send_frame(priv, data, len, !do_not_encrypt, flags);
481 /* Set kernel driver on given frequency (MHz) */
482 static int i802_set_freq2(void *priv, struct hostapd_freq_params *freq)
484 struct i802_driver_data *drv = priv;
491 drv->last_freq = freq->freq;
492 drv->last_freq_ht = freq->ht_enabled;
494 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
495 NL80211_CMD_SET_WIPHY, 0);
497 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
498 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
499 if (freq->ht_enabled) {
500 switch (freq->sec_channel_offset) {
502 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
503 NL80211_CHAN_HT40MINUS);
506 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
507 NL80211_CHAN_HT40PLUS);
510 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
516 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
523 static int i802_set_rts(void *priv, int rts)
525 struct i802_driver_data *drv = priv;
528 memset(&iwr, 0, sizeof(iwr));
529 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
530 iwr.u.rts.value = rts;
533 if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
534 perror("ioctl[SIOCSIWRTS]");
542 static int i802_get_rts(void *priv, int *rts)
544 struct i802_driver_data *drv = priv;
547 memset(&iwr, 0, sizeof(iwr));
548 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
550 if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
551 perror("ioctl[SIOCGIWRTS]");
555 *rts = iwr.u.rts.value;
561 static int i802_set_frag(void *priv, int frag)
563 struct i802_driver_data *drv = priv;
566 memset(&iwr, 0, sizeof(iwr));
567 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
568 iwr.u.frag.value = frag;
569 iwr.u.frag.fixed = 1;
571 if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
572 perror("ioctl[SIOCSIWFRAG]");
580 static int i802_get_frag(void *priv, int *frag)
582 struct i802_driver_data *drv = priv;
585 memset(&iwr, 0, sizeof(iwr));
586 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
588 if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
589 perror("ioctl[SIOCGIWFRAG]");
593 *frag = iwr.u.frag.value;
599 static int i802_set_retry(void *priv, int short_retry, int long_retry)
601 struct i802_driver_data *drv = priv;
604 memset(&iwr, 0, sizeof(iwr));
605 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
607 iwr.u.retry.value = short_retry;
608 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
609 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
610 perror("ioctl[SIOCSIWRETRY(short)]");
614 iwr.u.retry.value = long_retry;
615 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
616 if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
617 perror("ioctl[SIOCSIWRETRY(long)]");
625 static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
627 struct i802_driver_data *drv = priv;
630 memset(&iwr, 0, sizeof(iwr));
631 os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
633 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
634 if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
635 perror("ioctl[SIOCGIWFRAG(short)]");
638 *short_retry = iwr.u.retry.value;
640 iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
641 if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
642 perror("ioctl[SIOCGIWFRAG(long)]");
645 *long_retry = iwr.u.retry.value;
651 static int i802_flush(void *priv)
653 struct i802_driver_data *drv = priv;
660 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
661 0, NL80211_CMD_DEL_STATION, 0);
664 * XXX: FIX! this needs to flush all VLANs too
666 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
667 if_nametoindex(drv->iface));
669 return send_and_recv_msgs(drv, msg, NULL, NULL);
675 static int get_sta_handler(struct nl_msg *msg, void *arg)
677 struct nlattr *tb[NL80211_ATTR_MAX + 1];
678 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
679 struct hostap_sta_driver_data *data = arg;
680 struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
681 static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
682 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
683 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
684 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
685 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
686 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
689 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
690 genlmsg_attrlen(gnlh, 0), NULL);
693 * TODO: validate the interface and mac address!
694 * Otherwise, there's a race condition as soon as
695 * the kernel starts sending station notifications.
698 if (!tb[NL80211_ATTR_STA_INFO]) {
699 wpa_printf(MSG_DEBUG, "sta stats missing!");
702 if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
703 tb[NL80211_ATTR_STA_INFO],
705 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
709 if (stats[NL80211_STA_INFO_INACTIVE_TIME])
710 data->inactive_msec =
711 nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
712 if (stats[NL80211_STA_INFO_RX_BYTES])
713 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
714 if (stats[NL80211_STA_INFO_TX_BYTES])
715 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
716 if (stats[NL80211_STA_INFO_RX_PACKETS])
718 nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
719 if (stats[NL80211_STA_INFO_TX_PACKETS])
721 nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
726 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
729 struct i802_driver_data *drv = priv;
732 os_memset(data, 0, sizeof(*data));
737 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
738 0, NL80211_CMD_GET_STATION, 0);
740 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
741 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
743 return send_and_recv_msgs(drv, msg, get_sta_handler, data);
749 static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
750 size_t data_len, int encrypt, const u8 *own_addr)
752 struct i802_driver_data *drv = priv;
753 struct ieee80211_hdr *hdr;
758 int qos = sta->flags & WLAN_STA_WME;
763 len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
765 hdr = os_zalloc(len);
767 printf("malloc() failed for i802_send_data(len=%lu)\n",
768 (unsigned long) len);
773 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
774 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
776 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
777 #if 0 /* To be enabled if qos determination is added above */
779 hdr->frame_control |=
780 host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
784 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
785 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
786 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
787 pos = (u8 *) (hdr + 1);
789 #if 0 /* To be enabled if qos determination is added above */
791 /* add an empty QoS header if needed */
798 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
799 pos += sizeof(rfc1042_header);
800 WPA_PUT_BE16(pos, ETH_P_PAE);
802 memcpy(pos, data, data_len);
804 res = i802_send_frame(drv, (u8 *) hdr, len, encrypt, 0);
808 perror("i802_send_eapol: send");
809 printf("i802_send_eapol - packet len: %lu - failed\n",
810 (unsigned long) len);
817 static int i802_sta_add2(const char *ifname, void *priv,
818 struct hostapd_sta_add_params *params)
820 struct i802_driver_data *drv = priv;
828 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
829 0, NL80211_CMD_NEW_STATION, 0);
831 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
832 if_nametoindex(drv->iface));
833 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
834 NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
835 NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
837 NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
838 params->listen_interval);
840 #ifdef CONFIG_IEEE80211N
841 if (params->ht_capabilities) {
842 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
843 params->ht_capabilities->length,
844 ¶ms->ht_capabilities->data);
846 #endif /* CONFIG_IEEE80211N */
848 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
850 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
851 "result: %d (%s)", ret, strerror(-ret));
859 static int i802_sta_remove(void *priv, const u8 *addr)
861 struct i802_driver_data *drv = priv;
869 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
870 0, NL80211_CMD_DEL_STATION, 0);
872 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
873 if_nametoindex(drv->iface));
874 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
876 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
885 static int i802_sta_set_flags(void *priv, const u8 *addr,
886 int total_flags, int flags_or, int flags_and)
888 struct i802_driver_data *drv = priv;
889 struct nl_msg *msg, *flags = NULL;
895 flags = nlmsg_alloc();
901 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
902 0, NL80211_CMD_SET_STATION, 0);
904 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
905 if_nametoindex(drv->iface));
906 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
908 if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
909 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
911 if (total_flags & WLAN_STA_WMM)
912 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
914 if (total_flags & WLAN_STA_SHORT_PREAMBLE)
915 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
917 if (total_flags & WLAN_STA_MFP)
918 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
920 if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
921 goto nla_put_failure;
925 return send_and_recv_msgs(drv, msg, NULL, NULL);
932 static int i802_set_regulatory_domain(void *priv, unsigned int rd)
938 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
939 int cw_min, int cw_max, int burst_time)
941 struct i802_driver_data *drv = priv;
943 struct nlattr *txq, *params;
949 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
950 0, NL80211_CMD_SET_WIPHY, 0);
952 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
954 txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
956 goto nla_put_failure;
958 /* We are only sending parameters for a single TXQ at a time */
959 params = nla_nest_start(msg, 1);
961 goto nla_put_failure;
963 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
964 /* Burst time is configured in units of 0.1 msec and TXOP parameter in
965 * 32 usec, so need to convert the value here. */
966 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
967 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
968 NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
969 NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
971 nla_nest_end(msg, params);
973 nla_nest_end(msg, txq);
975 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
982 static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
986 /* stop listening for EAPOL on this interface */
987 del_ifidx(drv, ifidx);
991 goto nla_put_failure;
993 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
994 0, NL80211_CMD_DEL_INTERFACE, 0);
995 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
997 if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
1000 printf("Failed to remove interface.\n");
1004 static int nl80211_create_iface(struct i802_driver_data *drv,
1006 enum nl80211_iftype iftype,
1009 struct nl_msg *msg, *flags = NULL;
1015 msg = nlmsg_alloc();
1019 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1020 0, NL80211_CMD_NEW_INTERFACE, 0);
1021 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1022 if_nametoindex(drv->hapd->conf->iface));
1023 NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
1024 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
1026 if (iftype == NL80211_IFTYPE_MONITOR) {
1029 flags = nlmsg_alloc();
1031 goto nla_put_failure;
1033 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
1035 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
1040 goto nla_put_failure;
1043 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1046 printf("Failed to create interface %s.\n", ifname);
1050 ifidx = if_nametoindex(ifname);
1055 /* start listening for EAPOL on this interface */
1056 add_ifidx(drv, ifidx);
1060 case NL80211_IFTYPE_AP:
1061 os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
1062 memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
1063 ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
1065 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
1066 nl80211_remove_iface(drv, ifidx);
1070 case NL80211_IFTYPE_WDS:
1071 memset(&iwr, 0, sizeof(iwr));
1072 os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1073 iwr.u.addr.sa_family = ARPHRD_ETHER;
1074 memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
1075 if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
1088 static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
1093 * The kernel supports that when the low-level driver does,
1094 * but we currently don't because we need per-BSS data that
1095 * currently we can't handle easily.
1099 ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
1102 if (hostapd_set_iface_flags(priv, ifname, 1)) {
1103 nl80211_remove_iface(priv, ifidx);
1110 static int i802_bss_remove(void *priv, const char *ifname)
1112 nl80211_remove_iface(priv, if_nametoindex(ifname));
1117 static int i802_set_beacon(const char *iface, void *priv,
1118 u8 *head, size_t head_len,
1119 u8 *tail, size_t tail_len)
1121 struct i802_driver_data *drv = priv;
1123 u8 cmd = NL80211_CMD_NEW_BEACON;
1126 msg = nlmsg_alloc();
1130 if (drv->beacon_set)
1131 cmd = NL80211_CMD_SET_BEACON;
1133 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1135 NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
1136 NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
1137 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1138 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
1140 if (!drv->dtim_period)
1141 drv->dtim_period = 2;
1142 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1144 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1146 drv->beacon_set = 1;
1153 static int i802_del_beacon(struct i802_driver_data *drv)
1157 msg = nlmsg_alloc();
1161 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1162 0, NL80211_CMD_DEL_BEACON, 0);
1163 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1165 return send_and_recv_msgs(drv, msg, NULL, NULL);
1171 static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
1173 struct i802_driver_data *drv = priv;
1176 * FIXME: This needs to be per interface (BSS)
1178 drv->ieee802_1x_active = enabled;
1183 static int i802_set_privacy(const char *ifname, void *priv, int enabled)
1185 struct i802_driver_data *drv = priv;
1188 memset(&iwr, 0, sizeof(iwr));
1190 os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
1191 iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
1192 iwr.u.param.value = enabled;
1194 ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
1196 /* ignore errors, the kernel/driver might not care */
1201 static int i802_set_internal_bridge(void *priv, int value)
1207 static int i802_set_beacon_int(void *priv, int value)
1209 struct i802_driver_data *drv = priv;
1212 drv->beacon_int = value;
1214 if (!drv->beacon_set)
1217 msg = nlmsg_alloc();
1221 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1222 0, NL80211_CMD_SET_BEACON, 0);
1223 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1225 NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
1227 return send_and_recv_msgs(drv, msg, NULL, NULL);
1233 static int i802_set_dtim_period(const char *iface, void *priv, int value)
1235 struct i802_driver_data *drv = priv;
1238 msg = nlmsg_alloc();
1242 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1243 0, NL80211_CMD_SET_BEACON, 0);
1244 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
1246 drv->dtim_period = value;
1247 NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
1249 return send_and_recv_msgs(drv, msg, NULL, NULL);
1255 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
1257 struct i802_driver_data *drv = priv;
1260 msg = nlmsg_alloc();
1264 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1265 NL80211_CMD_SET_BSS, 0);
1268 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
1270 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
1272 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
1274 /* TODO: multi-BSS support */
1275 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1277 return send_and_recv_msgs(drv, msg, NULL, NULL);
1283 static int i802_set_cts_protect(void *priv, int value)
1285 return i802_set_bss(priv, value, -1, -1);
1289 static int i802_set_preamble(void *priv, int value)
1291 return i802_set_bss(priv, -1, value, -1);
1295 static int i802_set_short_slot_time(void *priv, int value)
1297 return i802_set_bss(priv, -1, -1, value);
1301 static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
1304 case HOSTAPD_IF_VLAN:
1305 return NL80211_IFTYPE_AP_VLAN;
1306 case HOSTAPD_IF_WDS:
1307 return NL80211_IFTYPE_WDS;
1313 static int i802_if_add(const char *iface, void *priv,
1314 enum hostapd_driver_if_type type, char *ifname,
1317 if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
1323 static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
1324 char *ifname, const u8 *addr)
1326 /* unused at the moment */
1331 static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
1332 const char *ifname, const u8 *addr)
1334 nl80211_remove_iface(priv, if_nametoindex(ifname));
1339 struct phy_info_arg {
1341 struct hostapd_hw_modes *modes;
1344 static int phy_info_handler(struct nl_msg *msg, void *arg)
1346 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
1347 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1348 struct phy_info_arg *phy_info = arg;
1350 struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
1352 struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
1353 static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
1354 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
1355 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
1356 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
1357 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
1358 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
1359 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
1362 struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
1363 static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
1364 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
1365 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
1368 struct nlattr *nl_band;
1369 struct nlattr *nl_freq;
1370 struct nlattr *nl_rate;
1371 int rem_band, rem_freq, rem_rate;
1372 struct hostapd_hw_modes *mode;
1373 int idx, mode_is_set;
1375 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1376 genlmsg_attrlen(gnlh, 0), NULL);
1378 if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
1381 nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
1382 mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
1385 phy_info->modes = mode;
1389 mode = &phy_info->modes[*(phy_info->num_modes)];
1390 memset(mode, 0, sizeof(*mode));
1391 *(phy_info->num_modes) += 1;
1393 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
1394 nla_len(nl_band), NULL);
1396 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
1397 mode->ht_capab = nla_get_u16(
1398 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
1401 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1402 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1403 nla_len(nl_freq), freq_policy);
1404 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1406 mode->num_channels++;
1409 mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
1410 if (!mode->channels)
1415 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
1416 nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
1417 nla_len(nl_freq), freq_policy);
1418 if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
1421 mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
1422 mode->channels[idx].flag = 0;
1425 /* crude heuristic */
1426 if (mode->channels[idx].freq < 4000)
1427 mode->mode = HOSTAPD_MODE_IEEE80211B;
1429 mode->mode = HOSTAPD_MODE_IEEE80211A;
1433 /* crude heuristic */
1434 if (mode->channels[idx].freq < 4000)
1435 if (mode->channels[idx].freq == 2484)
1436 mode->channels[idx].chan = 14;
1438 mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
1440 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
1442 if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1443 mode->channels[idx].flag |=
1444 HOSTAPD_CHAN_DISABLED;
1445 if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
1446 mode->channels[idx].flag |=
1447 HOSTAPD_CHAN_PASSIVE_SCAN;
1448 if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
1449 mode->channels[idx].flag |=
1450 HOSTAPD_CHAN_NO_IBSS;
1451 if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
1452 mode->channels[idx].flag |=
1455 if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
1456 !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
1457 mode->channels[idx].max_tx_power =
1458 nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
1463 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1464 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1465 nla_len(nl_rate), rate_policy);
1466 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1471 mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
1477 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
1478 nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
1479 nla_len(nl_rate), rate_policy);
1480 if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
1482 mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
1484 /* crude heuristic */
1485 if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
1486 mode->rates[idx].rate > 200)
1487 mode->mode = HOSTAPD_MODE_IEEE80211G;
1489 if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
1490 mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
1499 static struct hostapd_hw_modes *i802_add_11b(struct hostapd_hw_modes *modes,
1503 struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
1504 int i, mode11g_idx = -1;
1506 /* If only 802.11g mode is included, use it to construct matching
1507 * 802.11b mode data. */
1509 for (m = 0; m < *num_modes; m++) {
1510 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
1511 return modes; /* 802.11b already included */
1512 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
1516 if (mode11g_idx < 0)
1517 return modes; /* 2.4 GHz band not supported at all */
1519 nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
1521 return modes; /* Could not add 802.11b mode */
1523 mode = &nmodes[*num_modes];
1524 os_memset(mode, 0, sizeof(*mode));
1528 mode->mode = HOSTAPD_MODE_IEEE80211B;
1530 mode11g = &modes[mode11g_idx];
1531 mode->num_channels = mode11g->num_channels;
1532 mode->channels = os_malloc(mode11g->num_channels *
1533 sizeof(struct hostapd_channel_data));
1534 if (mode->channels == NULL) {
1536 return modes; /* Could not add 802.11b mode */
1538 os_memcpy(mode->channels, mode11g->channels,
1539 mode11g->num_channels * sizeof(struct hostapd_channel_data));
1541 mode->num_rates = 0;
1542 mode->rates = os_malloc(4 * sizeof(struct hostapd_rate_data));
1543 if (mode->rates == NULL) {
1544 os_free(mode->channels);
1546 return modes; /* Could not add 802.11b mode */
1549 for (i = 0; i < mode11g->num_rates; i++) {
1550 if (mode11g->rates[i].rate > 110 ||
1551 mode11g->rates[i].flags &
1552 (HOSTAPD_RATE_ERP | HOSTAPD_RATE_OFDM))
1554 mode->rates[mode->num_rates] = mode11g->rates[i];
1556 if (mode->num_rates == 4)
1560 if (mode->num_rates == 0) {
1561 os_free(mode->channels);
1562 os_free(mode->rates);
1564 return modes; /* No 802.11b rates */
1567 wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
1573 static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
1577 struct i802_driver_data *drv = priv;
1579 struct phy_info_arg result = {
1580 .num_modes = num_modes,
1587 msg = nlmsg_alloc();
1591 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1592 0, NL80211_CMD_GET_WIPHY, 0);
1594 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
1596 if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
1597 return i802_add_11b(result.modes, num_modes);
1603 static int i802_set_sta_vlan(void *priv, const u8 *addr,
1604 const char *ifname, int vlan_id)
1606 struct i802_driver_data *drv = priv;
1609 msg = nlmsg_alloc();
1613 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1614 0, NL80211_CMD_SET_STATION, 0);
1616 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1617 if_nametoindex(drv->iface));
1618 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1619 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
1620 if_nametoindex(ifname));
1622 return send_and_recv_msgs(drv, msg, NULL, NULL);
1628 static int i802_set_country(void *priv, const char *country)
1630 struct i802_driver_data *drv = priv;
1634 msg = nlmsg_alloc();
1638 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1639 0, NL80211_CMD_REQ_SET_REG, 0);
1641 alpha2[0] = country[0];
1642 alpha2[1] = country[1];
1644 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
1646 return send_and_recv_msgs(drv, msg, NULL, NULL);
1652 static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
1654 struct sta_info *sta;
1656 sta = ap_get_sta(hapd, ta);
1657 if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
1658 printf("Data/PS-poll frame from not associated STA "
1659 MACSTR "\n", MAC2STR(ta));
1660 if (sta && (sta->flags & WLAN_STA_AUTH))
1661 hostapd_sta_disassoc(
1663 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1667 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
1672 static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
1675 struct ieee80211_hdr *hdr;
1676 u16 fc, type, stype;
1677 struct sta_info *sta;
1679 hdr = (struct ieee80211_hdr *) buf;
1680 fc = le_to_host16(hdr->frame_control);
1682 type = WLAN_FC_GET_TYPE(fc);
1683 stype = WLAN_FC_GET_STYPE(fc);
1686 case WLAN_FC_TYPE_MGMT:
1687 wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
1688 ok ? "ACK" : "fail");
1689 ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
1691 case WLAN_FC_TYPE_CTRL:
1692 wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
1693 ok ? "ACK" : "fail");
1695 case WLAN_FC_TYPE_DATA:
1696 sta = ap_get_sta(hapd, hdr->addr1);
1697 if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
1698 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
1699 "activity poll", MAC2STR(sta->addr),
1700 ok ? "ACKed" : "did not ACK");
1702 sta->flags &= ~WLAN_STA_PENDING_POLL;
1705 ieee802_1x_tx_status(hapd, sta, buf, len, ok);
1708 printf("unknown TX callback frame type %d\n", type);
1714 static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
1715 struct hostapd_frame_info *hfi,
1716 enum ieee80211_msg_type msg_type)
1718 struct ieee80211_hdr *hdr;
1719 u16 fc, type, stype;
1720 size_t data_len = len;
1721 struct hostapd_data *hapd = NULL;
1722 int broadcast_bssid = 0;
1727 * PS-Poll frames are 16 bytes. All other frames are
1728 * 24 bytes or longer.
1733 hdr = (struct ieee80211_hdr *) buf;
1734 fc = le_to_host16(hdr->frame_control);
1736 type = WLAN_FC_GET_TYPE(fc);
1737 stype = WLAN_FC_GET_STYPE(fc);
1740 case WLAN_FC_TYPE_DATA:
1743 switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
1747 case WLAN_FC_FROMDS:
1755 case WLAN_FC_TYPE_CTRL:
1756 /* discard non-ps-poll frames */
1757 if (stype != WLAN_FC_STYPE_PSPOLL)
1761 case WLAN_FC_TYPE_MGMT:
1769 /* find interface frame belongs to */
1770 for (i = 0; i < iface->num_bss; i++) {
1771 if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
1772 hapd = iface->bss[i];
1778 hapd = iface->bss[0];
1780 if (bssid[0] != 0xff || bssid[1] != 0xff ||
1781 bssid[2] != 0xff || bssid[3] != 0xff ||
1782 bssid[4] != 0xff || bssid[5] != 0xff) {
1784 * Unknown BSSID - drop frame if this is not from
1785 * passive scanning or a beacon (at least ProbeReq
1786 * frames to other APs may be allowed through RX
1787 * filtering in the wlan hw/driver)
1789 if ((type != WLAN_FC_TYPE_MGMT ||
1790 stype != WLAN_FC_STYPE_BEACON))
1793 broadcast_bssid = 1;
1797 case ieee80211_msg_normal:
1798 /* continue processing */
1800 case ieee80211_msg_tx_callback_ack:
1801 handle_tx_callback(hapd, buf, data_len, 1);
1803 case ieee80211_msg_tx_callback_fail:
1804 handle_tx_callback(hapd, buf, data_len, 0);
1809 case WLAN_FC_TYPE_MGMT:
1810 if (stype != WLAN_FC_STYPE_BEACON &&
1811 stype != WLAN_FC_STYPE_PROBE_REQ)
1812 wpa_printf(MSG_MSGDUMP, "MGMT");
1813 if (broadcast_bssid) {
1814 for (i = 0; i < iface->num_bss; i++)
1815 ieee802_11_mgmt(iface->bss[i], buf, data_len,
1818 ieee802_11_mgmt(hapd, buf, data_len, stype, hfi);
1820 case WLAN_FC_TYPE_CTRL:
1821 /* can only get here with PS-Poll frames */
1822 wpa_printf(MSG_DEBUG, "CTRL");
1823 handle_unknown_sta(hapd, hdr->addr2);
1825 case WLAN_FC_TYPE_DATA:
1826 handle_unknown_sta(hapd, hdr->addr2);
1832 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
1834 struct i802_driver_data *drv = eloop_ctx;
1835 struct hostapd_data *hapd = drv->hapd;
1836 struct sockaddr_ll lladdr;
1837 unsigned char buf[3000];
1839 socklen_t fromlen = sizeof(lladdr);
1841 len = recvfrom(sock, buf, sizeof(buf), 0,
1842 (struct sockaddr *)&lladdr, &fromlen);
1848 if (have_ifidx(drv, lladdr.sll_ifindex))
1849 ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
1853 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
1855 struct i802_driver_data *drv = eloop_ctx;
1857 unsigned char buf[3000];
1858 struct hostapd_data *hapd = drv->hapd;
1859 struct ieee80211_radiotap_iterator iter;
1861 struct hostapd_frame_info hfi;
1862 int injected = 0, failed = 0, msg_type, rxflags = 0;
1864 len = recv(sock, buf, sizeof(buf), 0);
1870 if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
1871 printf("received invalid radiotap frame\n");
1875 memset(&hfi, 0, sizeof(hfi));
1878 ret = ieee80211_radiotap_iterator_next(&iter);
1882 printf("received invalid radiotap frame (%d)\n", ret);
1885 switch (iter.this_arg_index) {
1886 case IEEE80211_RADIOTAP_FLAGS:
1887 if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
1890 case IEEE80211_RADIOTAP_RX_FLAGS:
1893 case IEEE80211_RADIOTAP_TX_FLAGS:
1895 failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
1896 IEEE80211_RADIOTAP_F_TX_FAIL;
1898 case IEEE80211_RADIOTAP_DATA_RETRIES:
1900 case IEEE80211_RADIOTAP_CHANNEL:
1901 /* TODO convert from freq/flags to channel number
1906 case IEEE80211_RADIOTAP_RATE:
1907 hfi.datarate = *iter.this_arg * 5;
1909 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
1910 hfi.ssi_signal = *iter.this_arg;
1915 if (rxflags && injected)
1919 msg_type = ieee80211_msg_normal;
1921 msg_type = ieee80211_msg_tx_callback_fail;
1923 msg_type = ieee80211_msg_tx_callback_ack;
1925 handle_frame(hapd->iface, buf + iter.max_length,
1926 len - iter.max_length, &hfi, msg_type);
1931 * we post-process the filter code later and rewrite
1932 * this to the offset to the last instruction
1937 static struct sock_filter msock_filter_insns[] = {
1939 * do a little-endian load of the radiotap length field
1941 /* load lower byte into A */
1942 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
1943 /* put it into X (== index register) */
1944 BPF_STMT(BPF_MISC| BPF_TAX, 0),
1945 /* load upper byte into A */
1946 BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 3),
1947 /* left-shift it by 8 */
1948 BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
1950 BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
1951 /* put result into X */
1952 BPF_STMT(BPF_MISC| BPF_TAX, 0),
1955 * Allow management frames through, this also gives us those
1956 * management frames that we sent ourselves with status
1958 /* load the lower byte of the IEEE 802.11 frame control field */
1959 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1960 /* mask off frame type and version */
1961 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
1962 /* accept frame if it's both 0, fall through otherwise */
1963 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
1966 * TODO: add a bit to radiotap RX flags that indicates
1967 * that the sending station is not associated, then
1968 * add a filter here that filters on our DA and that flag
1969 * to allow us to deauth frames to that bad station.
1971 * Not a regression -- we didn't do it before either.
1976 * drop non-data frames, WDS frames
1978 /* load the lower byte of the frame control field */
1979 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1980 /* mask off QoS bit */
1981 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x0c),
1982 /* drop non-data frames */
1983 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 8, 0, FAIL),
1984 /* load the upper byte of the frame control field */
1985 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1986 /* mask off toDS/fromDS */
1987 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x03),
1988 /* drop WDS frames */
1989 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 3, FAIL, 0),
1993 * add header length to index
1995 /* load the lower byte of the frame control field */
1996 BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
1997 /* mask off QoS bit */
1998 BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0x80),
1999 /* right shift it by 6 to give 0 or 2 */
2000 BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 6),
2001 /* add data frame header length */
2002 BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 24),
2003 /* add index, was start of 802.11 header */
2004 BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
2005 /* move to index, now start of LL header */
2006 BPF_STMT(BPF_MISC | BPF_TAX, 0),
2009 * Accept empty data frames, we use those for
2012 BPF_STMT(BPF_LD | BPF_W | BPF_LEN, 0),
2013 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2016 * Accept EAPOL frames
2018 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
2019 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2020 BPF_STMT(BPF_LD | BPF_W | BPF_IND, 4),
2021 BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2023 /* keep these last two statements or change the code below */
2024 /* return 0 == "DROP" */
2025 BPF_STMT(BPF_RET | BPF_K, 0),
2026 /* return ~0 == "keep all" */
2027 BPF_STMT(BPF_RET | BPF_K, ~0),
2030 static struct sock_fprog msock_filter = {
2031 .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2032 .filter = msock_filter_insns,
2036 static int add_monitor_filter(int s)
2040 /* rewrite all PASS/FAIL jump offsets */
2041 for (idx = 0; idx < msock_filter.len; idx++) {
2042 struct sock_filter *insn = &msock_filter_insns[idx];
2044 if (BPF_CLASS(insn->code) == BPF_JMP) {
2045 if (insn->code == (BPF_JMP|BPF_JA)) {
2046 if (insn->k == PASS)
2047 insn->k = msock_filter.len - idx - 2;
2048 else if (insn->k == FAIL)
2049 insn->k = msock_filter.len - idx - 3;
2052 if (insn->jt == PASS)
2053 insn->jt = msock_filter.len - idx - 2;
2054 else if (insn->jt == FAIL)
2055 insn->jt = msock_filter.len - idx - 3;
2057 if (insn->jf == PASS)
2058 insn->jf = msock_filter.len - idx - 2;
2059 else if (insn->jf == FAIL)
2060 insn->jf = msock_filter.len - idx - 3;
2064 if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
2065 &msock_filter, sizeof(msock_filter))) {
2066 perror("SO_ATTACH_FILTER");
2074 static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
2077 struct sockaddr_ll ll;
2081 snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
2082 buf[IFNAMSIZ - 1] = '\0';
2084 drv->monitor_ifidx =
2085 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
2087 if (drv->monitor_ifidx < 0)
2090 if (hostapd_set_iface_flags(drv, buf, 1))
2093 memset(&ll, 0, sizeof(ll));
2094 ll.sll_family = AF_PACKET;
2095 ll.sll_ifindex = drv->monitor_ifidx;
2096 drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
2097 if (drv->monitor_sock < 0) {
2098 perror("socket[PF_PACKET,SOCK_RAW]");
2102 if (add_monitor_filter(drv->monitor_sock)) {
2103 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
2104 "interface; do filtering in user space");
2105 /* This works, but will cost in performance. */
2108 if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
2110 perror("monitor socket bind");
2114 optlen = sizeof(optval);
2117 (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
2118 perror("Failed to set socket priority");
2122 if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
2124 printf("Could not register monitor read socket\n");
2130 nl80211_remove_iface(drv, drv->monitor_ifidx);
2135 static int nl80211_set_master_mode(struct i802_driver_data *drv,
2141 msg = nlmsg_alloc();
2145 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2146 0, NL80211_CMD_SET_INTERFACE, 0);
2147 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2148 if_nametoindex(ifname));
2149 NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
2151 ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2155 wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
2161 static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
2164 struct sockaddr_ll addr;
2166 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
2167 if (drv->ioctl_sock < 0) {
2168 perror("socket[PF_INET,SOCK_DGRAM]");
2172 /* start listening for EAPOL on the default AP interface */
2173 add_ifidx(drv, if_nametoindex(drv->iface));
2175 if (hostapd_set_iface_flags(drv, drv->iface, 0))
2179 os_strlcpy(ifr.ifr_name, drv->iface, IFNAMSIZ);
2180 memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
2181 ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
2183 if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
2184 perror("ioctl(SIOCSIFHWADDR)");
2190 * initialise generic netlink and nl80211
2192 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
2194 printf("Failed to allocate netlink callbacks.\n");
2198 drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
2199 if (!drv->nl_handle) {
2200 printf("Failed to allocate netlink handle.\n");
2204 if (genl_connect(drv->nl_handle)) {
2205 printf("Failed to connect to generic netlink.\n");
2209 #ifdef CONFIG_LIBNL20
2210 if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
2211 printf("Failed to allocate generic netlink cache.\n");
2214 #else /* CONFIG_LIBNL20 */
2215 drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
2216 if (!drv->nl_cache) {
2217 printf("Failed to allocate generic netlink cache.\n");
2220 #endif /* CONFIG_LIBNL20 */
2222 drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
2223 if (!drv->nl80211) {
2224 printf("nl80211 not found.\n");
2228 /* Initialise a monitor interface */
2229 if (nl80211_create_monitor_interface(drv))
2232 if (nl80211_set_master_mode(drv, drv->iface))
2235 if (hostapd_set_iface_flags(drv, drv->iface, 1))
2238 memset(&addr, 0, sizeof(addr));
2239 addr.sll_family = AF_PACKET;
2240 addr.sll_ifindex = ifr.ifr_ifindex;
2241 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
2244 drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
2245 if (drv->eapol_sock < 0) {
2246 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
2250 if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
2252 printf("Could not register read socket for eapol\n");
2256 memset(&ifr, 0, sizeof(ifr));
2257 os_strlcpy(ifr.ifr_name, drv->iface, sizeof(ifr.ifr_name));
2258 if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
2259 perror("ioctl(SIOCGIFHWADDR)");
2263 if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
2264 printf("Invalid HW-addr family 0x%04x\n",
2265 ifr.ifr_hwaddr.sa_family);
2268 memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
2273 nl80211_remove_iface(drv, drv->monitor_ifidx);
2278 static int i802_get_inact_sec(void *priv, const u8 *addr)
2280 struct hostap_sta_driver_data data;
2283 data.inactive_msec = (unsigned long) -1;
2284 ret = i802_read_sta_data(priv, &data, addr);
2285 if (ret || data.inactive_msec == (unsigned long) -1)
2287 return data.inactive_msec / 1000;
2291 static int i802_sta_clear_stats(void *priv, const u8 *addr)
2301 hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
2304 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
2306 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
2309 pos = strstr(custom, "addr=");
2311 wpa_printf(MSG_DEBUG,
2312 "MLME-MICHAELMICFAILURE.indication "
2313 "without sender address ignored");
2317 if (hwaddr_aton(pos, addr) == 0) {
2318 ieee80211_michael_mic_failure(drv->hapd, addr, 1);
2320 wpa_printf(MSG_DEBUG,
2321 "MLME-MICHAELMICFAILURE.indication "
2322 "with invalid MAC address");
2328 static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
2329 char *data, int len)
2331 struct iw_event iwe_buf, *iwe = &iwe_buf;
2332 char *pos, *end, *custom, *buf;
2337 while (pos + IW_EV_LCP_LEN <= end) {
2338 /* Event data may be unaligned, so make a local, aligned copy
2339 * before processing. */
2340 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
2341 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
2342 iwe->cmd, iwe->len);
2343 if (iwe->len <= IW_EV_LCP_LEN)
2346 custom = pos + IW_EV_POINT_LEN;
2347 if (drv->we_version > 18 &&
2348 (iwe->cmd == IWEVMICHAELMICFAILURE ||
2349 iwe->cmd == IWEVCUSTOM)) {
2350 /* WE-19 removed the pointer from struct iw_point */
2351 char *dpos = (char *) &iwe_buf.u.data.length;
2352 int dlen = dpos - (char *) &iwe_buf;
2353 memcpy(dpos, pos + IW_EV_LCP_LEN,
2354 sizeof(struct iw_event) - dlen);
2356 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
2357 custom += IW_EV_POINT_OFF;
2362 if (custom + iwe->u.data.length > end)
2364 buf = malloc(iwe->u.data.length + 1);
2367 memcpy(buf, custom, iwe->u.data.length);
2368 buf[iwe->u.data.length] = '\0';
2369 hostapd_wireless_event_wireless_custom(drv, buf);
2379 static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
2380 struct nlmsghdr *h, int len)
2382 struct ifinfomsg *ifi;
2383 int attrlen, _nlmsg_len, rta_len;
2384 struct rtattr *attr;
2386 if (len < (int) sizeof(*ifi))
2389 ifi = NLMSG_DATA(h);
2391 /* TODO: use ifi->ifi_index to filter out wireless events from other
2394 _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
2396 attrlen = h->nlmsg_len - _nlmsg_len;
2400 attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
2402 rta_len = RTA_ALIGN(sizeof(struct rtattr));
2403 while (RTA_OK(attr, attrlen)) {
2404 if (attr->rta_type == IFLA_WIRELESS) {
2405 hostapd_wireless_event_wireless(
2406 drv, ((char *) attr) + rta_len,
2407 attr->rta_len - rta_len);
2409 attr = RTA_NEXT(attr, attrlen);
2414 static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
2419 struct sockaddr_nl from;
2422 struct i802_driver_data *drv = eloop_ctx;
2424 fromlen = sizeof(from);
2425 left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
2426 (struct sockaddr *) &from, &fromlen);
2428 if (errno != EINTR && errno != EAGAIN)
2429 perror("recvfrom(netlink)");
2433 h = (struct nlmsghdr *) buf;
2434 while (left >= (int) sizeof(*h)) {
2438 plen = len - sizeof(*h);
2439 if (len > left || plen < 0) {
2440 printf("Malformed netlink message: "
2441 "len=%d left=%d plen=%d\n",
2446 switch (h->nlmsg_type) {
2448 hostapd_wireless_event_rtm_newlink(drv, h, plen);
2452 len = NLMSG_ALIGN(len);
2454 h = (struct nlmsghdr *) ((char *) h + len);
2458 printf("%d extra bytes in the end of netlink message\n", left);
2463 static int hostap_get_we_version(struct i802_driver_data *drv)
2465 struct iw_range *range;
2470 drv->we_version = 0;
2473 * Use larger buffer than struct iw_range in order to allow the
2474 * structure to grow in the future.
2476 buflen = sizeof(struct iw_range) + 500;
2477 range = os_zalloc(buflen);
2481 memset(&iwr, 0, sizeof(iwr));
2482 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
2483 iwr.u.data.pointer = (caddr_t) range;
2484 iwr.u.data.length = buflen;
2486 minlen = ((char *) &range->enc_capa) - (char *) range +
2487 sizeof(range->enc_capa);
2489 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
2490 perror("ioctl[SIOCGIWRANGE]");
2493 } else if (iwr.u.data.length >= minlen &&
2494 range->we_version_compiled >= 18) {
2495 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
2496 "WE(source)=%d enc_capa=0x%x",
2497 range->we_version_compiled,
2498 range->we_version_source,
2500 drv->we_version = range->we_version_compiled;
2508 static int i802_wireless_event_init(void *priv)
2510 struct i802_driver_data *drv = priv;
2512 struct sockaddr_nl local;
2514 hostap_get_we_version(drv);
2516 drv->wext_sock = -1;
2518 s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
2520 perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
2524 memset(&local, 0, sizeof(local));
2525 local.nl_family = AF_NETLINK;
2526 local.nl_groups = RTMGRP_LINK;
2527 if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
2528 perror("bind(netlink)");
2533 eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
2541 static void i802_wireless_event_deinit(void *priv)
2543 struct i802_driver_data *drv = priv;
2544 if (drv->wext_sock < 0)
2546 eloop_unregister_read_sock(drv->wext_sock);
2547 close(drv->wext_sock);
2551 static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
2553 struct i802_driver_data *drv = priv;
2554 struct ieee80211_mgmt mgmt;
2556 memset(&mgmt, 0, sizeof(mgmt));
2557 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2558 WLAN_FC_STYPE_DEAUTH);
2559 memcpy(mgmt.da, addr, ETH_ALEN);
2560 memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2561 memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2562 mgmt.u.deauth.reason_code = host_to_le16(reason);
2563 return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2564 sizeof(mgmt.u.deauth), 0);
2568 static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
2570 struct i802_driver_data *drv = priv;
2571 struct ieee80211_mgmt mgmt;
2573 memset(&mgmt, 0, sizeof(mgmt));
2574 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
2575 WLAN_FC_STYPE_DISASSOC);
2576 memcpy(mgmt.da, addr, ETH_ALEN);
2577 memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
2578 memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
2579 mgmt.u.disassoc.reason_code = host_to_le16(reason);
2580 return i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
2581 sizeof(mgmt.u.disassoc), 0);
2585 static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
2587 struct i802_driver_data *drv;
2589 drv = os_zalloc(sizeof(struct i802_driver_data));
2591 printf("Could not allocate memory for i802 driver data\n");
2596 memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
2598 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
2599 drv->if_indices = drv->default_if_indices;
2600 drv->bridge = if_nametoindex(hapd->conf->bridge);
2602 if (i802_init_sockets(drv, bssid))
2613 static void *i802_init(struct hostapd_data *hapd)
2615 return i802_init_bssid(hapd, NULL);
2619 static void i802_deinit(void *priv)
2621 struct i802_driver_data *drv = priv;
2623 if (drv->last_freq_ht) {
2624 /* Clear HT flags from the driver */
2625 struct hostapd_freq_params freq;
2626 os_memset(&freq, 0, sizeof(freq));
2627 freq.freq = drv->last_freq;
2628 i802_set_freq2(priv, &freq);
2631 i802_del_beacon(drv);
2633 /* remove monitor interface */
2634 nl80211_remove_iface(drv, drv->monitor_ifidx);
2636 (void) hostapd_set_iface_flags(drv, drv->iface, 0);
2638 if (drv->monitor_sock >= 0) {
2639 eloop_unregister_read_sock(drv->monitor_sock);
2640 close(drv->monitor_sock);
2642 if (drv->ioctl_sock >= 0)
2643 close(drv->ioctl_sock);
2644 if (drv->eapol_sock >= 0) {
2645 eloop_unregister_read_sock(drv->eapol_sock);
2646 close(drv->eapol_sock);
2649 genl_family_put(drv->nl80211);
2650 nl_cache_free(drv->nl_cache);
2651 nl_handle_destroy(drv->nl_handle);
2652 nl_cb_put(drv->nl_cb);
2654 if (drv->if_indices != drv->default_if_indices)
2655 free(drv->if_indices);
2661 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
2664 .init_bssid = i802_init_bssid,
2665 .deinit = i802_deinit,
2666 .wireless_event_init = i802_wireless_event_init,
2667 .wireless_event_deinit = i802_wireless_event_deinit,
2668 .set_ieee8021x = i802_set_ieee8021x,
2669 .set_privacy = i802_set_privacy,
2670 .set_encryption = i802_set_encryption,
2671 .get_seqnum = i802_get_seqnum,
2672 .flush = i802_flush,
2673 .read_sta_data = i802_read_sta_data,
2674 .send_eapol = i802_send_eapol,
2675 .sta_set_flags = i802_sta_set_flags,
2676 .sta_deauth = i802_sta_deauth,
2677 .sta_disassoc = i802_sta_disassoc,
2678 .sta_remove = i802_sta_remove,
2679 .send_mgmt_frame = i802_send_mgmt_frame,
2680 .sta_add2 = i802_sta_add2,
2681 .get_inact_sec = i802_get_inact_sec,
2682 .sta_clear_stats = i802_sta_clear_stats,
2683 .set_freq2 = i802_set_freq2,
2684 .set_rts = i802_set_rts,
2685 .get_rts = i802_get_rts,
2686 .set_frag = i802_set_frag,
2687 .get_frag = i802_get_frag,
2688 .set_retry = i802_set_retry,
2689 .get_retry = i802_get_retry,
2690 .set_rate_sets = i802_set_rate_sets,
2691 .set_regulatory_domain = i802_set_regulatory_domain,
2692 .set_beacon = i802_set_beacon,
2693 .set_internal_bridge = i802_set_internal_bridge,
2694 .set_beacon_int = i802_set_beacon_int,
2695 .set_dtim_period = i802_set_dtim_period,
2696 .set_cts_protect = i802_set_cts_protect,
2697 .set_preamble = i802_set_preamble,
2698 .set_short_slot_time = i802_set_short_slot_time,
2699 .set_tx_queue_params = i802_set_tx_queue_params,
2700 .bss_add = i802_bss_add,
2701 .bss_remove = i802_bss_remove,
2702 .if_add = i802_if_add,
2703 .if_update = i802_if_update,
2704 .if_remove = i802_if_remove,
2705 .get_hw_feature_data = i802_get_hw_feature_data,
2706 .set_sta_vlan = i802_set_sta_vlan,
2707 .set_country = i802_set_country,