Disconnect hostapd from building in base
[dragonfly.git] / contrib / hostapd / src / drivers / driver_hostap.c
CommitLineData
a875087d 1/*
4781064b 2 * Driver interaction with Linux Host AP driver
a875087d
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3 * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
4 *
4781064b
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5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
a875087d
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7 */
8
9#include "includes.h"
10#include <sys/ioctl.h>
11
4781064b 12#include "linux_wext.h"
a875087d
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13#include "common.h"
14#include "driver.h"
15#include "driver_wext.h"
16#include "eloop.h"
17#include "driver_hostap.h"
18
19
4781064b
JM
20#include <net/if_arp.h>
21#include <netpacket/packet.h>
22
23#include "priv_netlink.h"
24#include "netlink.h"
25#include "linux_ioctl.h"
26#include "common/ieee802_11_defs.h"
27#include "common/ieee802_11_common.h"
28
29
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
32 * fragmented */
33#define HOSTAPD_MTU 2290
34
35static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
36
37struct hostap_driver_data {
38 struct hostapd_data *hapd;
39
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;
44
45 int we_version;
46
47 u8 *generic_ie;
48 size_t generic_ie_len;
49 u8 *wps_ie;
50 size_t wps_ie_len;
a875087d
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51};
52
53
4781064b
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54static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
55 int len);
56static int hostap_set_iface_flags(void *priv, int dev_up);
57
58static void handle_data(struct hostap_driver_data *drv, u8 *buf, size_t len,
59 u16 stype)
a875087d 60{
4781064b
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61 struct ieee80211_hdr *hdr;
62 u16 fc, ethertype;
63 u8 *pos, *sa;
64 size_t left;
65 union wpa_event_data event;
a875087d 66
4781064b
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67 if (len < sizeof(struct ieee80211_hdr))
68 return;
69
70 hdr = (struct ieee80211_hdr *) buf;
71 fc = le_to_host16(hdr->frame_control);
a875087d 72
4781064b
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73 if ((fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) != WLAN_FC_TODS) {
74 printf("Not ToDS data frame (fc=0x%04x)\n", fc);
75 return;
a875087d
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76 }
77
4781064b
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78 sa = hdr->addr2;
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);
83
84 pos = (u8 *) (hdr + 1);
85 left = len - sizeof(*hdr);
86
87 if (left < sizeof(rfc1042_header)) {
88 printf("Too short data frame\n");
89 return;
90 }
91
92 if (memcmp(pos, rfc1042_header, sizeof(rfc1042_header)) != 0) {
93 printf("Data frame with no RFC1042 header\n");
94 return;
95 }
96 pos += sizeof(rfc1042_header);
97 left -= sizeof(rfc1042_header);
98
99 if (left < 2) {
100 printf("No ethertype in data frame\n");
101 return;
102 }
103
104 ethertype = WPA_GET_BE16(pos);
105 pos += 2;
106 left -= 2;
107 switch (ethertype) {
108 case ETH_P_PAE:
109 drv_event_eapol_rx(drv->hapd, sa, pos, left);
110 break;
111
112 default:
113 printf("Unknown ethertype 0x%04x in data frame\n", ethertype);
114 break;
115 }
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116}
117
118
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119static void handle_tx_callback(struct hostap_driver_data *drv, u8 *buf,
120 size_t len, int ok)
a875087d 121{
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122 struct ieee80211_hdr *hdr;
123 u16 fc;
124 union wpa_event_data event;
125
126 hdr = (struct ieee80211_hdr *) buf;
127 fc = le_to_host16(hdr->frame_control);
128
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);
137}
a875087d 138
4781064b
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139
140static void handle_frame(struct hostap_driver_data *drv, u8 *buf, size_t len)
141{
142 struct ieee80211_hdr *hdr;
143 u16 fc, extra_len, type, stype;
144 size_t data_len = len;
145 int ver;
146 union wpa_event_data event;
147
148 /* PSPOLL is only 16 bytes, but driver does not (at least yet) pass
149 * these to user space */
150 if (len < 24) {
151 wpa_printf(MSG_MSGDUMP, "handle_frame: too short (%lu)",
152 (unsigned long) len);
153 return;
154 }
155
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);
160
161 if (type != WLAN_FC_TYPE_MGMT || stype != WLAN_FC_STYPE_BEACON) {
162 wpa_hexdump(MSG_MSGDUMP, "Received management frame",
163 buf, len);
164 }
165
166 ver = fc & WLAN_FC_PVER;
167
168 /* protocol version 3 is reserved for indicating extra data after the
169 * payload, version 2 for indicating ACKed frame (TX callbacks), and
170 * version 1 for indicating failed frame (no ACK, TX callbacks) */
171 if (ver == 3) {
172 u8 *pos = buf + len - 2;
173 extra_len = WPA_GET_LE16(pos);
174 printf("extra data in frame (elen=%d)\n", extra_len);
175 if ((size_t) extra_len + 2 > len) {
176 printf(" extra data overflow\n");
177 return;
178 }
179 len -= extra_len + 2;
180 } else if (ver == 1 || ver == 2) {
181 handle_tx_callback(drv, buf, data_len, ver == 2 ? 1 : 0);
182 return;
183 } else if (ver != 0) {
184 printf("unknown protocol version %d\n", ver);
185 return;
186 }
187
188 switch (type) {
189 case WLAN_FC_TYPE_MGMT:
190 os_memset(&event, 0, sizeof(event));
191 event.rx_mgmt.frame = buf;
192 event.rx_mgmt.frame_len = data_len;
193 wpa_supplicant_event(drv->hapd, EVENT_RX_MGMT, &event);
194 break;
195 case WLAN_FC_TYPE_CTRL:
196 wpa_printf(MSG_DEBUG, "CTRL");
197 break;
198 case WLAN_FC_TYPE_DATA:
199 wpa_printf(MSG_DEBUG, "DATA");
200 handle_data(drv, buf, data_len, stype);
201 break;
202 default:
203 wpa_printf(MSG_DEBUG, "unknown frame type %d", type);
204 break;
205 }
206}
207
208
209static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
210{
211 struct hostap_driver_data *drv = eloop_ctx;
212 int len;
213 unsigned char buf[3000];
214
215 len = recv(sock, buf, sizeof(buf), 0);
216 if (len < 0) {
217 perror("recv");
218 return;
219 }
220
221 handle_frame(drv, buf, len);
222}
223
224
225static int hostap_init_sockets(struct hostap_driver_data *drv, u8 *own_addr)
226{
227 struct ifreq ifr;
228 struct sockaddr_ll addr;
229
230 drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
231 if (drv->sock < 0) {
232 perror("socket[PF_PACKET,SOCK_RAW]");
a875087d 233 return -1;
4781064b 234 }
a875087d 235
4781064b
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236 if (eloop_register_read_sock(drv->sock, handle_read, drv, NULL)) {
237 printf("Could not register read socket\n");
238 return -1;
239 }
a875087d 240
4781064b
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241 memset(&ifr, 0, sizeof(ifr));
242 snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%sap", drv->iface);
243 if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
244 perror("ioctl(SIOCGIFINDEX)");
245 return -1;
246 }
247
248 if (hostap_set_iface_flags(drv, 1)) {
249 return -1;
250 }
251
252 memset(&addr, 0, sizeof(addr));
253 addr.sll_family = AF_PACKET;
254 addr.sll_ifindex = ifr.ifr_ifindex;
255 wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
256 addr.sll_ifindex);
257
258 if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
259 perror("bind");
260 return -1;
261 }
262
263 return linux_get_ifhwaddr(drv->sock, drv->iface, own_addr);
264}
265
266
267static int hostap_send_mlme(void *priv, const u8 *msg, size_t len, int noack)
268{
269 struct hostap_driver_data *drv = priv;
270 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) msg;
271 int res;
272
273 /* Request TX callback */
274 hdr->frame_control |= host_to_le16(BIT(1));
275 res = send(drv->sock, msg, len, 0);
276 hdr->frame_control &= ~host_to_le16(BIT(1));
a875087d
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277
278 return res;
279}
280
281
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282static int hostap_send_eapol(void *priv, const u8 *addr, const u8 *data,
283 size_t data_len, int encrypt, const u8 *own_addr,
284 u32 flags)
a875087d 285{
4781064b
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286 struct hostap_driver_data *drv = priv;
287 struct ieee80211_hdr *hdr;
288 size_t len;
289 u8 *pos;
290 int res;
a875087d 291
4781064b
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292 len = sizeof(*hdr) + sizeof(rfc1042_header) + 2 + data_len;
293 hdr = os_zalloc(len);
294 if (hdr == NULL) {
295 printf("malloc() failed for hostapd_send_data(len=%lu)\n",
296 (unsigned long) len);
297 return -1;
298 }
a875087d 299
4781064b
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300 hdr->frame_control =
301 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
302 hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
303 if (encrypt)
304 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
305 memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
306 memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
307 memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
308
309 pos = (u8 *) (hdr + 1);
310 memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
311 pos += sizeof(rfc1042_header);
312 *((u16 *) pos) = htons(ETH_P_PAE);
313 pos += 2;
314 memcpy(pos, data, data_len);
315
316 res = hostap_send_mlme(drv, (u8 *) hdr, len, 0);
317 if (res < 0) {
318 wpa_printf(MSG_ERROR, "hostap_send_eapol - packet len: %lu - "
319 "failed: %d (%s)",
320 (unsigned long) len, errno, strerror(errno));
a875087d 321 }
4781064b
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322 free(hdr);
323
324 return res;
a875087d
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325}
326
327
4781064b
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328static int hostap_sta_set_flags(void *priv, const u8 *addr,
329 int total_flags, int flags_or, int flags_and)
a875087d 330{
4781064b
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331 struct hostap_driver_data *drv = priv;
332 struct prism2_hostapd_param param;
a875087d 333
4781064b
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334 if (flags_or & WPA_STA_AUTHORIZED)
335 flags_or = BIT(5); /* WLAN_STA_AUTHORIZED */
336 if (!(flags_and & WPA_STA_AUTHORIZED))
337 flags_and = ~BIT(5);
338 else
339 flags_and = ~0;
340 memset(&param, 0, sizeof(param));
341 param.cmd = PRISM2_HOSTAPD_SET_FLAGS_STA;
342 memcpy(param.sta_addr, addr, ETH_ALEN);
343 param.u.set_flags_sta.flags_or = flags_or;
344 param.u.set_flags_sta.flags_and = flags_and;
345 return hostapd_ioctl(drv, &param, sizeof(param));
346}
a875087d 347
a875087d 348
4781064b
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349static int hostap_set_iface_flags(void *priv, int dev_up)
350{
351 struct hostap_driver_data *drv = priv;
352 struct ifreq ifr;
353 char ifname[IFNAMSIZ];
354
355 os_snprintf(ifname, IFNAMSIZ, "%sap", drv->iface);
356 if (linux_set_iface_flags(drv->ioctl_sock, ifname, dev_up) < 0)
357 return -1;
358
359 if (dev_up) {
360 memset(&ifr, 0, sizeof(ifr));
361 os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
362 ifr.ifr_mtu = HOSTAPD_MTU;
363 if (ioctl(drv->ioctl_sock, SIOCSIFMTU, &ifr) != 0) {
364 perror("ioctl[SIOCSIFMTU]");
365 printf("Setting MTU failed - trying to survive with "
366 "current value\n");
367 }
368 }
369
370 return 0;
a875087d
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371}
372
373
4781064b
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374static int hostapd_ioctl(void *priv, struct prism2_hostapd_param *param,
375 int len)
a875087d 376{
4781064b
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377 struct hostap_driver_data *drv = priv;
378 struct iwreq iwr;
379
380 memset(&iwr, 0, sizeof(iwr));
381 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
382 iwr.u.data.pointer = (caddr_t) param;
383 iwr.u.data.length = len;
384
385 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_HOSTAPD, &iwr) < 0) {
386 perror("ioctl[PRISM2_IOCTL_HOSTAPD]");
387 return -1;
a875087d 388 }
4781064b
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389
390 return 0;
a875087d
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391}
392
393
4781064b
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394static int wpa_driver_hostap_set_key(const char *ifname, void *priv,
395 enum wpa_alg alg, const u8 *addr,
396 int key_idx, int set_tx,
397 const u8 *seq, size_t seq_len,
a875087d
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398 const u8 *key, size_t key_len)
399{
4781064b 400 struct hostap_driver_data *drv = priv;
a875087d
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401 struct prism2_hostapd_param *param;
402 u8 *buf;
403 size_t blen;
404 int ret = 0;
a875087d 405
4781064b
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406 blen = sizeof(*param) + key_len;
407 buf = os_zalloc(blen);
408 if (buf == NULL)
409 return -1;
410
411 param = (struct prism2_hostapd_param *) buf;
412 param->cmd = PRISM2_SET_ENCRYPTION;
413 if (addr == NULL)
414 memset(param->sta_addr, 0xff, ETH_ALEN);
415 else
416 memcpy(param->sta_addr, addr, ETH_ALEN);
a875087d
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417 switch (alg) {
418 case WPA_ALG_NONE:
4781064b
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419 os_strlcpy((char *) param->u.crypt.alg, "NONE",
420 HOSTAP_CRYPT_ALG_NAME_LEN);
a875087d
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421 break;
422 case WPA_ALG_WEP:
4781064b
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423 os_strlcpy((char *) param->u.crypt.alg, "WEP",
424 HOSTAP_CRYPT_ALG_NAME_LEN);
a875087d
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425 break;
426 case WPA_ALG_TKIP:
4781064b
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427 os_strlcpy((char *) param->u.crypt.alg, "TKIP",
428 HOSTAP_CRYPT_ALG_NAME_LEN);
a875087d
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429 break;
430 case WPA_ALG_CCMP:
4781064b
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431 os_strlcpy((char *) param->u.crypt.alg, "CCMP",
432 HOSTAP_CRYPT_ALG_NAME_LEN);
a875087d
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433 break;
434 default:
4781064b 435 os_free(buf);
a875087d
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436 return -1;
437 }
4781064b
JM
438 param->u.crypt.flags = set_tx ? HOSTAP_CRYPT_FLAG_SET_TX_KEY : 0;
439 param->u.crypt.idx = key_idx;
440 param->u.crypt.key_len = key_len;
441 memcpy((u8 *) (param + 1), key, key_len);
442
443 if (hostapd_ioctl(drv, param, blen)) {
444 printf("Failed to set encryption.\n");
445 ret = -1;
446 }
447 free(buf);
a875087d 448
4781064b
JM
449 return ret;
450}
a875087d 451
a875087d 452
4781064b
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453static int hostap_get_seqnum(const char *ifname, void *priv, const u8 *addr,
454 int idx, u8 *seq)
455{
456 struct hostap_driver_data *drv = priv;
457 struct prism2_hostapd_param *param;
458 u8 *buf;
459 size_t blen;
460 int ret = 0;
461
462 blen = sizeof(*param) + 32;
a875087d
JL
463 buf = os_zalloc(blen);
464 if (buf == NULL)
465 return -1;
466
467 param = (struct prism2_hostapd_param *) buf;
4781064b 468 param->cmd = PRISM2_GET_ENCRYPTION;
a875087d 469 if (addr == NULL)
4781064b 470 memset(param->sta_addr, 0xff, ETH_ALEN);
a875087d 471 else
4781064b
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472 memcpy(param->sta_addr, addr, ETH_ALEN);
473 param->u.crypt.idx = idx;
a875087d 474
4781064b
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475 if (hostapd_ioctl(drv, param, blen)) {
476 printf("Failed to get encryption.\n");
a875087d 477 ret = -1;
4781064b
JM
478 } else {
479 memcpy(seq, param->u.crypt.seq, 8);
a875087d 480 }
4781064b 481 free(buf);
a875087d
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482
483 return ret;
484}
485
486
4781064b
JM
487static int hostap_ioctl_prism2param(void *priv, int param, int value)
488{
489 struct hostap_driver_data *drv = priv;
490 struct iwreq iwr;
491 int *i;
492
493 memset(&iwr, 0, sizeof(iwr));
494 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
495 i = (int *) iwr.u.name;
496 *i++ = param;
497 *i++ = value;
498
499 if (ioctl(drv->ioctl_sock, PRISM2_IOCTL_PRISM2_PARAM, &iwr) < 0) {
500 perror("ioctl[PRISM2_IOCTL_PRISM2_PARAM]");
501 return -1;
502 }
503
504 return 0;
505}
506
507
508static int hostap_set_ieee8021x(void *priv, struct wpa_bss_params *params)
a875087d 509{
4781064b
JM
510 struct hostap_driver_data *drv = priv;
511 int enabled = params->enabled;
512
513 /* enable kernel driver support for IEEE 802.1X */
514 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_IEEE_802_1X, enabled)) {
515 printf("Could not setup IEEE 802.1X support in kernel driver."
516 "\n");
517 return -1;
518 }
519
520 if (!enabled)
521 return 0;
522
523 /* use host driver implementation of encryption to allow
524 * individual keys and passing plaintext EAPOL frames */
525 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_DECRYPT, 1) ||
526 hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOST_ENCRYPT, 1)) {
527 printf("Could not setup host-based encryption in kernel "
528 "driver.\n");
529 return -1;
530 }
531
532 return 0;
a875087d
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533}
534
535
4781064b 536static int hostap_set_privacy(void *priv, int enabled)
a875087d 537{
4781064b
JM
538 struct hostap_drvier_data *drv = priv;
539
540 return hostap_ioctl_prism2param(drv, PRISM2_PARAM_PRIVACY_INVOKED,
541 enabled);
a875087d
JL
542}
543
544
4781064b 545static int hostap_set_ssid(void *priv, const u8 *buf, int len)
a875087d 546{
4781064b 547 struct hostap_driver_data *drv = priv;
a875087d 548 struct iwreq iwr;
a875087d 549
4781064b
JM
550 memset(&iwr, 0, sizeof(iwr));
551 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
552 iwr.u.essid.flags = 1; /* SSID active */
553 iwr.u.essid.pointer = (caddr_t) buf;
554 iwr.u.essid.length = len + 1;
a875087d 555
4781064b
JM
556 if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
557 perror("ioctl[SIOCSIWESSID]");
558 printf("len=%d\n", len);
559 return -1;
a875087d 560 }
4781064b
JM
561
562 return 0;
a875087d
JL
563}
564
565
4781064b 566static int hostap_flush(void *priv)
a875087d 567{
4781064b 568 struct hostap_driver_data *drv = priv;
a875087d 569 struct prism2_hostapd_param param;
4781064b
JM
570
571 memset(&param, 0, sizeof(param));
572 param.cmd = PRISM2_HOSTAPD_FLUSH;
573 return hostapd_ioctl(drv, &param, sizeof(param));
a875087d
JL
574}
575
576
4781064b
JM
577static int hostap_read_sta_data(void *priv,
578 struct hostap_sta_driver_data *data,
579 const u8 *addr)
a875087d 580{
4781064b
JM
581 struct hostap_driver_data *drv = priv;
582 char buf[1024], line[128], *pos;
583 FILE *f;
584 unsigned long val;
585
586 memset(data, 0, sizeof(*data));
587 snprintf(buf, sizeof(buf), "/proc/net/hostap/%s/" MACSTR,
588 drv->iface, MAC2STR(addr));
589
590 f = fopen(buf, "r");
591 if (!f)
592 return -1;
593 /* Need to read proc file with in one piece, so use large enough
594 * buffer. */
595 setbuffer(f, buf, sizeof(buf));
596
597 while (fgets(line, sizeof(line), f)) {
598 pos = strchr(line, '=');
599 if (!pos)
600 continue;
601 *pos++ = '\0';
602 val = strtoul(pos, NULL, 10);
603 if (strcmp(line, "rx_packets") == 0)
604 data->rx_packets = val;
605 else if (strcmp(line, "tx_packets") == 0)
606 data->tx_packets = val;
607 else if (strcmp(line, "rx_bytes") == 0)
608 data->rx_bytes = val;
609 else if (strcmp(line, "tx_bytes") == 0)
610 data->tx_bytes = val;
611 }
612
613 fclose(f);
614
615 return 0;
a875087d
JL
616}
617
618
4781064b 619static int hostap_sta_add(void *priv, struct hostapd_sta_add_params *params)
a875087d 620{
4781064b
JM
621 struct hostap_driver_data *drv = priv;
622 struct prism2_hostapd_param param;
623 int tx_supp_rates = 0;
624 size_t i;
625
626#define WLAN_RATE_1M BIT(0)
627#define WLAN_RATE_2M BIT(1)
628#define WLAN_RATE_5M5 BIT(2)
629#define WLAN_RATE_11M BIT(3)
630
631 for (i = 0; i < params->supp_rates_len; i++) {
632 if ((params->supp_rates[i] & 0x7f) == 2)
633 tx_supp_rates |= WLAN_RATE_1M;
634 if ((params->supp_rates[i] & 0x7f) == 4)
635 tx_supp_rates |= WLAN_RATE_2M;
636 if ((params->supp_rates[i] & 0x7f) == 11)
637 tx_supp_rates |= WLAN_RATE_5M5;
638 if ((params->supp_rates[i] & 0x7f) == 22)
639 tx_supp_rates |= WLAN_RATE_11M;
640 }
641
642 memset(&param, 0, sizeof(param));
643 param.cmd = PRISM2_HOSTAPD_ADD_STA;
644 memcpy(param.sta_addr, params->addr, ETH_ALEN);
645 param.u.add_sta.aid = params->aid;
646 param.u.add_sta.capability = params->capability;
647 param.u.add_sta.tx_supp_rates = tx_supp_rates;
648 return hostapd_ioctl(drv, &param, sizeof(param));
a875087d
JL
649}
650
651
4781064b 652static int hostap_sta_remove(void *priv, const u8 *addr)
a875087d 653{
4781064b
JM
654 struct hostap_driver_data *drv = priv;
655 struct prism2_hostapd_param param;
656
657 hostap_sta_set_flags(drv, addr, 0, 0, ~WPA_STA_AUTHORIZED);
658
659 memset(&param, 0, sizeof(param));
660 param.cmd = PRISM2_HOSTAPD_REMOVE_STA;
661 memcpy(param.sta_addr, addr, ETH_ALEN);
662 if (hostapd_ioctl(drv, &param, sizeof(param))) {
663 printf("Could not remove station from kernel driver.\n");
664 return -1;
a875087d 665 }
4781064b
JM
666 return 0;
667}
a875087d 668
a875087d 669
4781064b
JM
670static int hostap_get_inact_sec(void *priv, const u8 *addr)
671{
672 struct hostap_driver_data *drv = priv;
673 struct prism2_hostapd_param param;
674
675 memset(&param, 0, sizeof(param));
676 param.cmd = PRISM2_HOSTAPD_GET_INFO_STA;
677 memcpy(param.sta_addr, addr, ETH_ALEN);
678 if (hostapd_ioctl(drv, &param, sizeof(param))) {
679 return -1;
a875087d
JL
680 }
681
4781064b 682 return param.u.get_info_sta.inactive_sec;
a875087d
JL
683}
684
685
4781064b 686static int hostap_sta_clear_stats(void *priv, const u8 *addr)
a875087d 687{
4781064b 688 struct hostap_driver_data *drv = priv;
a875087d 689 struct prism2_hostapd_param param;
a875087d 690
4781064b
JM
691 memset(&param, 0, sizeof(param));
692 param.cmd = PRISM2_HOSTAPD_STA_CLEAR_STATS;
693 memcpy(param.sta_addr, addr, ETH_ALEN);
694 if (hostapd_ioctl(drv, &param, sizeof(param))) {
695 return -1;
a875087d
JL
696 }
697
4781064b
JM
698 return 0;
699}
a875087d 700
a875087d 701
4781064b
JM
702static int hostapd_ioctl_set_generic_elem(struct hostap_driver_data *drv)
703{
704 struct prism2_hostapd_param *param;
705 int res;
706 size_t blen, elem_len;
a875087d 707
4781064b
JM
708 elem_len = drv->generic_ie_len + drv->wps_ie_len;
709 blen = PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN + elem_len;
710 if (blen < sizeof(*param))
711 blen = sizeof(*param);
712
713 param = os_zalloc(blen);
714 if (param == NULL)
715 return -1;
716
717 param->cmd = PRISM2_HOSTAPD_SET_GENERIC_ELEMENT;
718 param->u.generic_elem.len = elem_len;
719 if (drv->generic_ie) {
720 os_memcpy(param->u.generic_elem.data, drv->generic_ie,
721 drv->generic_ie_len);
722 }
723 if (drv->wps_ie) {
724 os_memcpy(&param->u.generic_elem.data[drv->generic_ie_len],
725 drv->wps_ie, drv->wps_ie_len);
726 }
727 wpa_hexdump(MSG_DEBUG, "hostap: Set generic IE",
728 param->u.generic_elem.data, elem_len);
729 res = hostapd_ioctl(drv, param, blen);
730
731 os_free(param);
732
733 return res;
734}
735
736
737static int hostap_set_generic_elem(void *priv,
738 const u8 *elem, size_t elem_len)
739{
740 struct hostap_driver_data *drv = priv;
741
742 os_free(drv->generic_ie);
743 drv->generic_ie = NULL;
744 drv->generic_ie_len = 0;
745 if (elem) {
746 drv->generic_ie = os_malloc(elem_len);
747 if (drv->generic_ie == NULL)
748 return -1;
749 os_memcpy(drv->generic_ie, elem, elem_len);
750 drv->generic_ie_len = elem_len;
751 }
752
753 return hostapd_ioctl_set_generic_elem(drv);
a875087d
JL
754}
755
756
4781064b
JM
757static int hostap_set_ap_wps_ie(void *priv, const struct wpabuf *beacon,
758 const struct wpabuf *proberesp,
759 const struct wpabuf *assocresp)
a875087d 760{
4781064b
JM
761 struct hostap_driver_data *drv = priv;
762
763 /*
764 * Host AP driver supports only one set of extra IEs, so we need to
765 * use the Probe Response IEs also for Beacon frames since they include
766 * more information.
767 */
768
769 os_free(drv->wps_ie);
770 drv->wps_ie = NULL;
771 drv->wps_ie_len = 0;
772 if (proberesp) {
773 drv->wps_ie = os_malloc(wpabuf_len(proberesp));
774 if (drv->wps_ie == NULL)
775 return -1;
776 os_memcpy(drv->wps_ie, wpabuf_head(proberesp),
777 wpabuf_len(proberesp));
778 drv->wps_ie_len = wpabuf_len(proberesp);
779 }
780
781 return hostapd_ioctl_set_generic_elem(drv);
782}
a875087d 783
a875087d 784
4781064b
JM
785static void
786hostapd_wireless_event_wireless_custom(struct hostap_driver_data *drv,
787 char *custom)
788{
789 wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
790
791 if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
792 char *pos;
793 u8 addr[ETH_ALEN];
794 pos = strstr(custom, "addr=");
795 if (pos == NULL) {
796 wpa_printf(MSG_DEBUG,
797 "MLME-MICHAELMICFAILURE.indication "
798 "without sender address ignored");
799 return;
800 }
801 pos += 5;
802 if (hwaddr_aton(pos, addr) == 0) {
803 union wpa_event_data data;
804 os_memset(&data, 0, sizeof(data));
805 data.michael_mic_failure.unicast = 1;
806 data.michael_mic_failure.src = addr;
807 wpa_supplicant_event(drv->hapd,
808 EVENT_MICHAEL_MIC_FAILURE, &data);
809 } else {
810 wpa_printf(MSG_DEBUG,
811 "MLME-MICHAELMICFAILURE.indication "
812 "with invalid MAC address");
813 }
814 }
a875087d
JL
815}
816
817
4781064b
JM
818static void hostapd_wireless_event_wireless(struct hostap_driver_data *drv,
819 char *data, int len)
a875087d 820{
4781064b
JM
821 struct iw_event iwe_buf, *iwe = &iwe_buf;
822 char *pos, *end, *custom, *buf;
823
824 pos = data;
825 end = data + len;
826
827 while (pos + IW_EV_LCP_LEN <= end) {
828 /* Event data may be unaligned, so make a local, aligned copy
829 * before processing. */
830 memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
831 wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
832 iwe->cmd, iwe->len);
833 if (iwe->len <= IW_EV_LCP_LEN)
834 return;
835
836 custom = pos + IW_EV_POINT_LEN;
837 if (drv->we_version > 18 &&
838 (iwe->cmd == IWEVMICHAELMICFAILURE ||
839 iwe->cmd == IWEVCUSTOM)) {
840 /* WE-19 removed the pointer from struct iw_point */
841 char *dpos = (char *) &iwe_buf.u.data.length;
842 int dlen = dpos - (char *) &iwe_buf;
843 memcpy(dpos, pos + IW_EV_LCP_LEN,
844 sizeof(struct iw_event) - dlen);
845 } else {
846 memcpy(&iwe_buf, pos, sizeof(struct iw_event));
847 custom += IW_EV_POINT_OFF;
848 }
849
850 switch (iwe->cmd) {
851 case IWEVCUSTOM:
852 if (custom + iwe->u.data.length > end)
853 return;
854 buf = malloc(iwe->u.data.length + 1);
855 if (buf == NULL)
856 return;
857 memcpy(buf, custom, iwe->u.data.length);
858 buf[iwe->u.data.length] = '\0';
859 hostapd_wireless_event_wireless_custom(drv, buf);
860 free(buf);
861 break;
862 }
863
864 pos += iwe->len;
865 }
a875087d
JL
866}
867
868
4781064b
JM
869static void hostapd_wireless_event_rtm_newlink(void *ctx,
870 struct ifinfomsg *ifi,
871 u8 *buf, size_t len)
a875087d 872{
4781064b
JM
873 struct hostap_driver_data *drv = ctx;
874 int attrlen, rta_len;
875 struct rtattr *attr;
876
877 /* TODO: use ifi->ifi_index to filter out wireless events from other
878 * interfaces */
879
880 attrlen = len;
881 attr = (struct rtattr *) buf;
882
883 rta_len = RTA_ALIGN(sizeof(struct rtattr));
884 while (RTA_OK(attr, attrlen)) {
885 if (attr->rta_type == IFLA_WIRELESS) {
886 hostapd_wireless_event_wireless(
887 drv, ((char *) attr) + rta_len,
888 attr->rta_len - rta_len);
889 }
890 attr = RTA_NEXT(attr, attrlen);
891 }
a875087d
JL
892}
893
894
4781064b 895static int hostap_get_we_version(struct hostap_driver_data *drv)
a875087d 896{
4781064b
JM
897 struct iw_range *range;
898 struct iwreq iwr;
899 int minlen;
900 size_t buflen;
901
902 drv->we_version = 0;
903
904 /*
905 * Use larger buffer than struct iw_range in order to allow the
906 * structure to grow in the future.
907 */
908 buflen = sizeof(struct iw_range) + 500;
909 range = os_zalloc(buflen);
910 if (range == NULL)
911 return -1;
912
913 memset(&iwr, 0, sizeof(iwr));
914 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
915 iwr.u.data.pointer = (caddr_t) range;
916 iwr.u.data.length = buflen;
917
918 minlen = ((char *) &range->enc_capa) - (char *) range +
919 sizeof(range->enc_capa);
920
921 if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
922 perror("ioctl[SIOCGIWRANGE]");
923 free(range);
924 return -1;
925 } else if (iwr.u.data.length >= minlen &&
926 range->we_version_compiled >= 18) {
927 wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
928 "WE(source)=%d enc_capa=0x%x",
929 range->we_version_compiled,
930 range->we_version_source,
931 range->enc_capa);
932 drv->we_version = range->we_version_compiled;
933 }
934
935 free(range);
936 return 0;
a875087d
JL
937}
938
939
4781064b 940static int hostap_wireless_event_init(struct hostap_driver_data *drv)
a875087d 941{
4781064b
JM
942 struct netlink_config *cfg;
943
944 hostap_get_we_version(drv);
945
946 cfg = os_zalloc(sizeof(*cfg));
947 if (cfg == NULL)
948 return -1;
949 cfg->ctx = drv;
950 cfg->newlink_cb = hostapd_wireless_event_rtm_newlink;
951 drv->netlink = netlink_init(cfg);
952 if (drv->netlink == NULL) {
953 os_free(cfg);
954 return -1;
955 }
956
957 return 0;
a875087d
JL
958}
959
960
4781064b
JM
961static void * hostap_init(struct hostapd_data *hapd,
962 struct wpa_init_params *params)
a875087d 963{
4781064b 964 struct hostap_driver_data *drv;
a875087d 965
4781064b
JM
966 drv = os_zalloc(sizeof(struct hostap_driver_data));
967 if (drv == NULL) {
968 printf("Could not allocate memory for hostapd driver data\n");
a875087d 969 return NULL;
4781064b
JM
970 }
971
972 drv->hapd = hapd;
973 drv->ioctl_sock = drv->sock = -1;
974 memcpy(drv->iface, params->ifname, sizeof(drv->iface));
975
976 drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
977 if (drv->ioctl_sock < 0) {
978 perror("socket[PF_INET,SOCK_DGRAM]");
979 free(drv);
a875087d
JL
980 return NULL;
981 }
982
4781064b
JM
983 if (hostap_ioctl_prism2param(drv, PRISM2_PARAM_HOSTAPD, 1)) {
984 printf("Could not enable hostapd mode for interface %s\n",
985 drv->iface);
986 close(drv->ioctl_sock);
987 free(drv);
a875087d
JL
988 return NULL;
989 }
990
4781064b
JM
991 if (hostap_init_sockets(drv, params->own_addr) ||
992 hostap_wireless_event_init(drv)) {
993 close(drv->ioctl_sock);
994 free(drv);
995 return NULL;
996 }
997
998 return drv;
999}
1000
1001
1002static void hostap_driver_deinit(void *priv)
1003{
1004 struct hostap_driver_data *drv = priv;
1005
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);
1010
1011 if (drv->ioctl_sock >= 0)
1012 close(drv->ioctl_sock);
1013
1014 if (drv->sock >= 0)
1015 close(drv->sock);
1016
1017 os_free(drv->generic_ie);
1018 os_free(drv->wps_ie);
1019
1020 free(drv);
1021}
1022
1023
1024static int hostap_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
1025 int reason)
1026{
1027 struct hostap_driver_data *drv = priv;
1028 struct ieee80211_mgmt mgmt;
1029
1030 if (is_broadcast_ether_addr(addr)) {
a875087d 1031 /*
4781064b
JM
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.
a875087d 1036 */
4781064b 1037 return 0;
a875087d
JL
1038 }
1039
4781064b
JM
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);
1049}
1050
1051
1052static int hostap_set_freq(void *priv, struct hostapd_freq_params *freq)
1053{
1054 struct hostap_driver_data *drv = priv;
1055 struct iwreq iwr;
1056
1057 os_memset(&iwr, 0, sizeof(iwr));
1058 os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
1059 iwr.u.freq.m = freq->channel;
1060 iwr.u.freq.e = 0;
1061
1062 if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
1063 perror("ioctl[SIOCSIWFREQ]");
1064 return -1;
1065 }
1066
1067 return 0;
1068}
1069
1070
1071static int hostap_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
1072 int reason)
1073{
1074 struct hostap_driver_data *drv = priv;
1075 struct ieee80211_mgmt mgmt;
1076
1077 memset(&mgmt, 0, sizeof(mgmt));
1078 mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1079 WLAN_FC_STYPE_DISASSOC);
1080 memcpy(mgmt.da, addr, ETH_ALEN);
1081 memcpy(mgmt.sa, own_addr, ETH_ALEN);
1082 memcpy(mgmt.bssid, own_addr, ETH_ALEN);
1083 mgmt.u.disassoc.reason_code = host_to_le16(reason);
1084 return hostap_send_mlme(drv, (u8 *) &mgmt, IEEE80211_HDRLEN +
1085 sizeof(mgmt.u.disassoc), 0);
1086}
1087
1088
1089static struct hostapd_hw_modes * hostap_get_hw_feature_data(void *priv,
1090 u16 *num_modes,
1091 u16 *flags)
1092{
1093 struct hostapd_hw_modes *mode;
1094 int i, clen, rlen;
1095 const short chan2freq[14] = {
1096 2412, 2417, 2422, 2427, 2432, 2437, 2442,
1097 2447, 2452, 2457, 2462, 2467, 2472, 2484
1098 };
1099
1100 mode = os_zalloc(sizeof(struct hostapd_hw_modes));
1101 if (mode == NULL)
1102 return NULL;
1103
1104 *num_modes = 1;
1105 *flags = 0;
1106
1107 mode->mode = HOSTAPD_MODE_IEEE80211B;
1108 mode->num_channels = 14;
1109 mode->num_rates = 4;
1110
1111 clen = mode->num_channels * sizeof(struct hostapd_channel_data);
1112 rlen = mode->num_rates * sizeof(int);
1113
1114 mode->channels = os_zalloc(clen);
1115 mode->rates = os_zalloc(rlen);
1116 if (mode->channels == NULL || mode->rates == NULL) {
1117 os_free(mode->channels);
1118 os_free(mode->rates);
1119 os_free(mode);
1120 return NULL;
1121 }
1122
1123 for (i = 0; i < 14; i++) {
1124 mode->channels[i].chan = i + 1;
1125 mode->channels[i].freq = chan2freq[i];
1126 /* TODO: Get allowed channel list from the driver */
1127 if (i >= 11)
1128 mode->channels[i].flag = HOSTAPD_CHAN_DISABLED;
1129 }
1130
1131 mode->rates[0] = 10;
1132 mode->rates[1] = 20;
1133 mode->rates[2] = 55;
1134 mode->rates[3] = 110;
1135
1136 return mode;
a875087d
JL
1137}
1138
1139
4781064b
JM
1140static void wpa_driver_hostap_poll_client(void *priv, const u8 *own_addr,
1141 const u8 *addr, int qos)
a875087d 1142{
4781064b
JM
1143 struct ieee80211_hdr hdr;
1144
1145 os_memset(&hdr, 0, sizeof(hdr));
1146
1147 /*
1148 * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
1149 * but it is apparently not retried so TX Exc events
1150 * are not received for it.
1151 * This is the reason the driver overrides the default
1152 * handling.
1153 */
1154 hdr.frame_control = IEEE80211_FC(WLAN_FC_TYPE_DATA,
1155 WLAN_FC_STYPE_DATA);
1156
1157 hdr.frame_control |=
1158 host_to_le16(WLAN_FC_FROMDS);
1159 os_memcpy(hdr.IEEE80211_DA_FROMDS, addr, ETH_ALEN);
1160 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
1161 os_memcpy(hdr.IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
1162
1163 hostap_send_mlme(priv, (u8 *)&hdr, sizeof(hdr), 0);
a875087d
JL
1164}
1165
1166
1167const struct wpa_driver_ops wpa_driver_hostap_ops = {
1168 .name = "hostap",
1169 .desc = "Host AP driver (Intersil Prism2/2.5/3)",
a875087d 1170 .set_key = wpa_driver_hostap_set_key,
4781064b
JM
1171 .hapd_init = hostap_init,
1172 .hapd_deinit = hostap_driver_deinit,
1173 .set_ieee8021x = hostap_set_ieee8021x,
1174 .set_privacy = hostap_set_privacy,
1175 .get_seqnum = hostap_get_seqnum,
1176 .flush = hostap_flush,
1177 .set_generic_elem = hostap_set_generic_elem,
1178 .read_sta_data = hostap_read_sta_data,
1179 .hapd_send_eapol = hostap_send_eapol,
1180 .sta_set_flags = hostap_sta_set_flags,
1181 .sta_deauth = hostap_sta_deauth,
1182 .sta_disassoc = hostap_sta_disassoc,
1183 .sta_remove = hostap_sta_remove,
1184 .hapd_set_ssid = hostap_set_ssid,
1185 .send_mlme = hostap_send_mlme,
1186 .sta_add = hostap_sta_add,
1187 .get_inact_sec = hostap_get_inact_sec,
1188 .sta_clear_stats = hostap_sta_clear_stats,
1189 .get_hw_feature_data = hostap_get_hw_feature_data,
1190 .set_ap_wps_ie = hostap_set_ap_wps_ie,
1191 .set_freq = hostap_set_freq,
1192 .poll_client = wpa_driver_hostap_poll_client,
a875087d 1193};