xref: /freebsd/contrib/wpa/src/drivers/driver_wired.c (revision 396c556d77189a5c474d35cec6f44a762e310b7d)
1 /*
2  * Wired Ethernet driver interface
3  * Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
4  * Copyright (c) 2004, Gunter Burchardt <tira@isx.de>
5  *
6  * This software may be distributed under the terms of the BSD license.
7  * See README for more details.
8  */
9 
10 #include "includes.h"
11 #include <sys/ioctl.h>
12 #include <net/if.h>
13 #ifdef __linux__
14 #include <netpacket/packet.h>
15 #include <net/if_arp.h>
16 #include <net/if.h>
17 #endif /* __linux__ */
18 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
19 #include <net/if_dl.h>
20 #include <net/if_media.h>
21 #endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) */
22 #ifdef __sun__
23 #include <sys/sockio.h>
24 #endif /* __sun__ */
25 
26 #include "common.h"
27 #include "eloop.h"
28 #include "driver.h"
29 
30 #ifdef _MSC_VER
31 #pragma pack(push, 1)
32 #endif /* _MSC_VER */
33 
34 struct ieee8023_hdr {
35 	u8 dest[6];
36 	u8 src[6];
37 	u16 ethertype;
38 } STRUCT_PACKED;
39 
40 #ifdef _MSC_VER
41 #pragma pack(pop)
42 #endif /* _MSC_VER */
43 
44 static const u8 pae_group_addr[ETH_ALEN] =
45 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };
46 
47 
48 struct wpa_driver_wired_data {
49 	char ifname[IFNAMSIZ + 1];
50 	void *ctx;
51 
52 	int sock; /* raw packet socket for driver access */
53 	int dhcp_sock; /* socket for dhcp packets */
54 	int use_pae_group_addr;
55 
56 	int pf_sock;
57 	int membership, multi, iff_allmulti, iff_up;
58 };
59 
60 
61 /* TODO: detecting new devices should eventually be changed from using DHCP
62  * snooping to trigger on any packet from a new layer 2 MAC address, e.g.,
63  * based on ebtables, etc. */
64 
65 struct dhcp_message {
66 	u_int8_t op;
67 	u_int8_t htype;
68 	u_int8_t hlen;
69 	u_int8_t hops;
70 	u_int32_t xid;
71 	u_int16_t secs;
72 	u_int16_t flags;
73 	u_int32_t ciaddr;
74 	u_int32_t yiaddr;
75 	u_int32_t siaddr;
76 	u_int32_t giaddr;
77 	u_int8_t chaddr[16];
78 	u_int8_t sname[64];
79 	u_int8_t file[128];
80 	u_int32_t cookie;
81 	u_int8_t options[308]; /* 312 - cookie */
82 };
83 
84 
85 static int wired_multicast_membership(int sock, int ifindex,
86 				      const u8 *addr, int add)
87 {
88 #ifdef __linux__
89 	struct packet_mreq mreq;
90 
91 	if (sock < 0)
92 		return -1;
93 
94 	os_memset(&mreq, 0, sizeof(mreq));
95 	mreq.mr_ifindex = ifindex;
96 	mreq.mr_type = PACKET_MR_MULTICAST;
97 	mreq.mr_alen = ETH_ALEN;
98 	os_memcpy(mreq.mr_address, addr, ETH_ALEN);
99 
100 	if (setsockopt(sock, SOL_PACKET,
101 		       add ? PACKET_ADD_MEMBERSHIP : PACKET_DROP_MEMBERSHIP,
102 		       &mreq, sizeof(mreq)) < 0) {
103 		wpa_printf(MSG_ERROR, "setsockopt: %s", strerror(errno));
104 		return -1;
105 	}
106 	return 0;
107 #else /* __linux__ */
108 	return -1;
109 #endif /* __linux__ */
110 }
111 
112 
113 #ifdef __linux__
114 static void handle_data(void *ctx, unsigned char *buf, size_t len)
115 {
116 #ifdef HOSTAPD
117 	struct ieee8023_hdr *hdr;
118 	u8 *pos, *sa;
119 	size_t left;
120 	union wpa_event_data event;
121 
122 	/* must contain at least ieee8023_hdr 6 byte source, 6 byte dest,
123 	 * 2 byte ethertype */
124 	if (len < 14) {
125 		wpa_printf(MSG_MSGDUMP, "handle_data: too short (%lu)",
126 			   (unsigned long) len);
127 		return;
128 	}
129 
130 	hdr = (struct ieee8023_hdr *) buf;
131 
132 	switch (ntohs(hdr->ethertype)) {
133 		case ETH_P_PAE:
134 			wpa_printf(MSG_MSGDUMP, "Received EAPOL packet");
135 			sa = hdr->src;
136 			os_memset(&event, 0, sizeof(event));
137 			event.new_sta.addr = sa;
138 			wpa_supplicant_event(ctx, EVENT_NEW_STA, &event);
139 
140 			pos = (u8 *) (hdr + 1);
141 			left = len - sizeof(*hdr);
142 			drv_event_eapol_rx(ctx, sa, pos, left);
143 		break;
144 
145 	default:
146 		wpa_printf(MSG_DEBUG, "Unknown ethertype 0x%04x in data frame",
147 			   ntohs(hdr->ethertype));
148 		break;
149 	}
150 #endif /* HOSTAPD */
151 }
152 
153 
154 static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
155 {
156 	int len;
157 	unsigned char buf[3000];
158 
159 	len = recv(sock, buf, sizeof(buf), 0);
160 	if (len < 0) {
161 		wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
162 		return;
163 	}
164 
165 	handle_data(eloop_ctx, buf, len);
166 }
167 
168 
169 static void handle_dhcp(int sock, void *eloop_ctx, void *sock_ctx)
170 {
171 	int len;
172 	unsigned char buf[3000];
173 	struct dhcp_message *msg;
174 	u8 *mac_address;
175 	union wpa_event_data event;
176 
177 	len = recv(sock, buf, sizeof(buf), 0);
178 	if (len < 0) {
179 		wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
180 		return;
181 	}
182 
183 	/* must contain at least dhcp_message->chaddr */
184 	if (len < 44) {
185 		wpa_printf(MSG_MSGDUMP, "handle_dhcp: too short (%d)", len);
186 		return;
187 	}
188 
189 	msg = (struct dhcp_message *) buf;
190 	mac_address = (u8 *) &(msg->chaddr);
191 
192 	wpa_printf(MSG_MSGDUMP, "Got DHCP broadcast packet from " MACSTR,
193 		   MAC2STR(mac_address));
194 
195 	os_memset(&event, 0, sizeof(event));
196 	event.new_sta.addr = mac_address;
197 	wpa_supplicant_event(eloop_ctx, EVENT_NEW_STA, &event);
198 }
199 #endif /* __linux__ */
200 
201 
202 static int wired_init_sockets(struct wpa_driver_wired_data *drv, u8 *own_addr)
203 {
204 #ifdef __linux__
205 	struct ifreq ifr;
206 	struct sockaddr_ll addr;
207 	struct sockaddr_in addr2;
208 	int n = 1;
209 
210 	drv->sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_PAE));
211 	if (drv->sock < 0) {
212 		wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
213 			   strerror(errno));
214 		return -1;
215 	}
216 
217 	if (eloop_register_read_sock(drv->sock, handle_read, drv->ctx, NULL)) {
218 		wpa_printf(MSG_INFO, "Could not register read socket");
219 		return -1;
220 	}
221 
222 	os_memset(&ifr, 0, sizeof(ifr));
223 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
224 	if (ioctl(drv->sock, SIOCGIFINDEX, &ifr) != 0) {
225 		wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
226 			   strerror(errno));
227 		return -1;
228 	}
229 
230 	os_memset(&addr, 0, sizeof(addr));
231 	addr.sll_family = AF_PACKET;
232 	addr.sll_ifindex = ifr.ifr_ifindex;
233 	wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
234 		   addr.sll_ifindex);
235 
236 	if (bind(drv->sock, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
237 		wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
238 		return -1;
239 	}
240 
241 	/* filter multicast address */
242 	if (wired_multicast_membership(drv->sock, ifr.ifr_ifindex,
243 				       pae_group_addr, 1) < 0) {
244 		wpa_printf(MSG_ERROR, "wired: Failed to add multicast group "
245 			   "membership");
246 		return -1;
247 	}
248 
249 	os_memset(&ifr, 0, sizeof(ifr));
250 	os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
251 	if (ioctl(drv->sock, SIOCGIFHWADDR, &ifr) != 0) {
252 		wpa_printf(MSG_ERROR, "ioctl(SIOCGIFHWADDR): %s",
253 			   strerror(errno));
254 		return -1;
255 	}
256 
257 	if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
258 		wpa_printf(MSG_INFO, "Invalid HW-addr family 0x%04x",
259 			   ifr.ifr_hwaddr.sa_family);
260 		return -1;
261 	}
262 	os_memcpy(own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
263 
264 	/* setup dhcp listen socket for sta detection */
265 	if ((drv->dhcp_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
266 		wpa_printf(MSG_ERROR, "socket call failed for dhcp: %s",
267 			   strerror(errno));
268 		return -1;
269 	}
270 
271 	if (eloop_register_read_sock(drv->dhcp_sock, handle_dhcp, drv->ctx,
272 				     NULL)) {
273 		wpa_printf(MSG_INFO, "Could not register read socket");
274 		return -1;
275 	}
276 
277 	os_memset(&addr2, 0, sizeof(addr2));
278 	addr2.sin_family = AF_INET;
279 	addr2.sin_port = htons(67);
280 	addr2.sin_addr.s_addr = INADDR_ANY;
281 
282 	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_REUSEADDR, (char *) &n,
283 		       sizeof(n)) == -1) {
284 		wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_REUSEADDR]: %s",
285 			   strerror(errno));
286 		return -1;
287 	}
288 	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BROADCAST, (char *) &n,
289 		       sizeof(n)) == -1) {
290 		wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_BROADCAST]: %s",
291 			   strerror(errno));
292 		return -1;
293 	}
294 
295 	os_memset(&ifr, 0, sizeof(ifr));
296 	os_strlcpy(ifr.ifr_ifrn.ifrn_name, drv->ifname, IFNAMSIZ);
297 	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BINDTODEVICE,
298 		       (char *) &ifr, sizeof(ifr)) < 0) {
299 		wpa_printf(MSG_ERROR,
300 			   "setsockopt[SOL_SOCKET,SO_BINDTODEVICE]: %s",
301 			   strerror(errno));
302 		return -1;
303 	}
304 
305 	if (bind(drv->dhcp_sock, (struct sockaddr *) &addr2,
306 		 sizeof(struct sockaddr)) == -1) {
307 		wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
308 		return -1;
309 	}
310 
311 	return 0;
312 #else /* __linux__ */
313 	return -1;
314 #endif /* __linux__ */
315 }
316 
317 
318 static int wired_send_eapol(void *priv, const u8 *addr,
319 			    const u8 *data, size_t data_len, int encrypt,
320 			    const u8 *own_addr, u32 flags)
321 {
322 	struct wpa_driver_wired_data *drv = priv;
323 	struct ieee8023_hdr *hdr;
324 	size_t len;
325 	u8 *pos;
326 	int res;
327 
328 	len = sizeof(*hdr) + data_len;
329 	hdr = os_zalloc(len);
330 	if (hdr == NULL) {
331 		wpa_printf(MSG_INFO,
332 			   "malloc() failed for wired_send_eapol(len=%lu)",
333 			   (unsigned long) len);
334 		return -1;
335 	}
336 
337 	os_memcpy(hdr->dest, drv->use_pae_group_addr ? pae_group_addr : addr,
338 		  ETH_ALEN);
339 	os_memcpy(hdr->src, own_addr, ETH_ALEN);
340 	hdr->ethertype = htons(ETH_P_PAE);
341 
342 	pos = (u8 *) (hdr + 1);
343 	os_memcpy(pos, data, data_len);
344 
345 	res = send(drv->sock, (u8 *) hdr, len, 0);
346 	os_free(hdr);
347 
348 	if (res < 0) {
349 		wpa_printf(MSG_ERROR,
350 			   "wired_send_eapol - packet len: %lu - failed: send: %s",
351 			   (unsigned long) len, strerror(errno));
352 	}
353 
354 	return res;
355 }
356 
357 
358 static void * wired_driver_hapd_init(struct hostapd_data *hapd,
359 				     struct wpa_init_params *params)
360 {
361 	struct wpa_driver_wired_data *drv;
362 
363 	drv = os_zalloc(sizeof(struct wpa_driver_wired_data));
364 	if (drv == NULL) {
365 		wpa_printf(MSG_INFO,
366 			   "Could not allocate memory for wired driver data");
367 		return NULL;
368 	}
369 
370 	drv->ctx = hapd;
371 	os_strlcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
372 	drv->use_pae_group_addr = params->use_pae_group_addr;
373 
374 	if (wired_init_sockets(drv, params->own_addr)) {
375 		os_free(drv);
376 		return NULL;
377 	}
378 
379 	return drv;
380 }
381 
382 
383 static void wired_driver_hapd_deinit(void *priv)
384 {
385 	struct wpa_driver_wired_data *drv = priv;
386 
387 	if (drv->sock >= 0) {
388 		eloop_unregister_read_sock(drv->sock);
389 		close(drv->sock);
390 	}
391 
392 	if (drv->dhcp_sock >= 0) {
393 		eloop_unregister_read_sock(drv->dhcp_sock);
394 		close(drv->dhcp_sock);
395 	}
396 
397 	os_free(drv);
398 }
399 
400 
401 static int wpa_driver_wired_get_ssid(void *priv, u8 *ssid)
402 {
403 	ssid[0] = 0;
404 	return 0;
405 }
406 
407 
408 static int wpa_driver_wired_get_bssid(void *priv, u8 *bssid)
409 {
410 	/* Report PAE group address as the "BSSID" for wired connection. */
411 	os_memcpy(bssid, pae_group_addr, ETH_ALEN);
412 	return 0;
413 }
414 
415 
416 static int wpa_driver_wired_get_capa(void *priv, struct wpa_driver_capa *capa)
417 {
418 	os_memset(capa, 0, sizeof(*capa));
419 	capa->flags = WPA_DRIVER_FLAGS_WIRED;
420 	return 0;
421 }
422 
423 
424 static int wpa_driver_wired_get_ifflags(const char *ifname, int *flags)
425 {
426 	struct ifreq ifr;
427 	int s;
428 
429 	s = socket(PF_INET, SOCK_DGRAM, 0);
430 	if (s < 0) {
431 		wpa_printf(MSG_ERROR, "socket: %s", strerror(errno));
432 		return -1;
433 	}
434 
435 	os_memset(&ifr, 0, sizeof(ifr));
436 	os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
437 	if (ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
438 		wpa_printf(MSG_ERROR, "ioctl[SIOCGIFFLAGS]: %s",
439 			   strerror(errno));
440 		close(s);
441 		return -1;
442 	}
443 	close(s);
444 	*flags = ifr.ifr_flags & 0xffff;
445 	return 0;
446 }
447 
448 
449 static int wpa_driver_wired_set_ifflags(const char *ifname, int flags)
450 {
451 	struct ifreq ifr;
452 	int s;
453 
454 	s = socket(PF_INET, SOCK_DGRAM, 0);
455 	if (s < 0) {
456 		wpa_printf(MSG_ERROR, "socket: %s", strerror(errno));
457 		return -1;
458 	}
459 
460 	os_memset(&ifr, 0, sizeof(ifr));
461 	os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
462 	ifr.ifr_flags = flags & 0xffff;
463 	if (ioctl(s, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
464 		wpa_printf(MSG_ERROR, "ioctl[SIOCSIFFLAGS]: %s",
465 			   strerror(errno));
466 		close(s);
467 		return -1;
468 	}
469 	close(s);
470 	return 0;
471 }
472 
473 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
474 static int wpa_driver_wired_get_ifstatus(const char *ifname, int *status)
475 {
476 	struct ifmediareq ifmr;
477 	int s;
478 
479 	s = socket(PF_INET, SOCK_DGRAM, 0);
480 	if (s < 0) {
481 		wpa_printf(MSG_ERROR, "socket: %s", strerror(errno));
482 		return -1;
483 	}
484 
485 	os_memset(&ifmr, 0, sizeof(ifmr));
486 	os_strlcpy(ifmr.ifm_name, ifname, IFNAMSIZ);
487 	if (ioctl(s, SIOCGIFMEDIA, (caddr_t) &ifmr) < 0) {
488 		wpa_printf(MSG_ERROR, "ioctl[SIOCGIFMEDIA]: %s",
489 			   strerror(errno));
490 		close(s);
491 		return -1;
492 	}
493 	close(s);
494 	*status = (ifmr.ifm_status & (IFM_ACTIVE | IFM_AVALID)) ==
495 		(IFM_ACTIVE | IFM_AVALID);
496 
497 	return 0;
498 }
499 #endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(FreeBSD_kernel__) */
500 
501 
502 static int wpa_driver_wired_multi(const char *ifname, const u8 *addr, int add)
503 {
504 	struct ifreq ifr;
505 	int s;
506 
507 #ifdef __sun__
508 	return -1;
509 #endif /* __sun__ */
510 
511 	s = socket(PF_INET, SOCK_DGRAM, 0);
512 	if (s < 0) {
513 		wpa_printf(MSG_ERROR, "socket: %s", strerror(errno));
514 		return -1;
515 	}
516 
517 	os_memset(&ifr, 0, sizeof(ifr));
518 	os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
519 #ifdef __linux__
520 	ifr.ifr_hwaddr.sa_family = AF_UNSPEC;
521 	os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
522 #endif /* __linux__ */
523 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
524 	{
525 		struct sockaddr_dl *dlp;
526 		dlp = (struct sockaddr_dl *) &ifr.ifr_addr;
527 		dlp->sdl_len = sizeof(struct sockaddr_dl);
528 		dlp->sdl_family = AF_LINK;
529 		dlp->sdl_index = 0;
530 		dlp->sdl_nlen = 0;
531 		dlp->sdl_alen = ETH_ALEN;
532 		dlp->sdl_slen = 0;
533 		os_memcpy(LLADDR(dlp), addr, ETH_ALEN);
534 	}
535 #endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(FreeBSD_kernel__) */
536 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
537 	{
538 		struct sockaddr *sap;
539 		sap = (struct sockaddr *) &ifr.ifr_addr;
540 		sap->sa_len = sizeof(struct sockaddr);
541 		sap->sa_family = AF_UNSPEC;
542 		os_memcpy(sap->sa_data, addr, ETH_ALEN);
543 	}
544 #endif /* defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__) */
545 
546 	if (ioctl(s, add ? SIOCADDMULTI : SIOCDELMULTI, (caddr_t) &ifr) < 0) {
547 		wpa_printf(MSG_ERROR, "ioctl[SIOC{ADD/DEL}MULTI]: %s",
548 			   strerror(errno));
549 		close(s);
550 		return -1;
551 	}
552 	close(s);
553 	return 0;
554 }
555 
556 
557 static void * wpa_driver_wired_init(void *ctx, const char *ifname)
558 {
559 	struct wpa_driver_wired_data *drv;
560 	int flags, status;
561 
562 	drv = os_zalloc(sizeof(*drv));
563 	if (drv == NULL)
564 		return NULL;
565 	os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
566 	drv->ctx = ctx;
567 
568 #ifdef __linux__
569 	drv->pf_sock = socket(PF_PACKET, SOCK_DGRAM, 0);
570 	if (drv->pf_sock < 0)
571 		wpa_printf(MSG_ERROR, "socket(PF_PACKET): %s", strerror(errno));
572 #else /* __linux__ */
573 	drv->pf_sock = -1;
574 #endif /* __linux__ */
575 
576 	if (wpa_driver_wired_get_ifflags(ifname, &flags) == 0 &&
577 	    !(flags & IFF_UP) &&
578 	    wpa_driver_wired_set_ifflags(ifname, flags | IFF_UP) == 0) {
579 		drv->iff_up = 1;
580 	}
581 
582 	if (wired_multicast_membership(drv->pf_sock,
583 				       if_nametoindex(drv->ifname),
584 				       pae_group_addr, 1) == 0) {
585 		wpa_printf(MSG_DEBUG, "%s: Added multicast membership with "
586 			   "packet socket", __func__);
587 		drv->membership = 1;
588 	} else if (wpa_driver_wired_multi(ifname, pae_group_addr, 1) == 0) {
589 		wpa_printf(MSG_DEBUG, "%s: Added multicast membership with "
590 			   "SIOCADDMULTI", __func__);
591 		drv->multi = 1;
592 	} else if (wpa_driver_wired_get_ifflags(ifname, &flags) < 0) {
593 		wpa_printf(MSG_INFO, "%s: Could not get interface "
594 			   "flags", __func__);
595 		os_free(drv);
596 		return NULL;
597 	} else if (flags & IFF_ALLMULTI) {
598 		wpa_printf(MSG_DEBUG, "%s: Interface is already configured "
599 			   "for multicast", __func__);
600 	} else if (wpa_driver_wired_set_ifflags(ifname,
601 						flags | IFF_ALLMULTI) < 0) {
602 		wpa_printf(MSG_INFO, "%s: Failed to enable allmulti",
603 			   __func__);
604 		os_free(drv);
605 		return NULL;
606 	} else {
607 		wpa_printf(MSG_DEBUG, "%s: Enabled allmulti mode",
608 			   __func__);
609 		drv->iff_allmulti = 1;
610 	}
611 #if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
612 	{
613 		int status;
614 		wpa_printf(MSG_DEBUG, "%s: waiting for link to become active",
615 			   __func__);
616 		while (wpa_driver_wired_get_ifstatus(ifname, &status) == 0 &&
617 		       status == 0)
618 			sleep(1);
619 	}
620 #endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(FreeBSD_kernel__) */
621 
622 	return drv;
623 }
624 
625 
626 static void wpa_driver_wired_deinit(void *priv)
627 {
628 	struct wpa_driver_wired_data *drv = priv;
629 	int flags;
630 
631 	if (drv->membership &&
632 	    wired_multicast_membership(drv->pf_sock,
633 				       if_nametoindex(drv->ifname),
634 				       pae_group_addr, 0) < 0) {
635 		wpa_printf(MSG_DEBUG, "%s: Failed to remove PAE multicast "
636 			   "group (PACKET)", __func__);
637 	}
638 
639 	if (drv->multi &&
640 	    wpa_driver_wired_multi(drv->ifname, pae_group_addr, 0) < 0) {
641 		wpa_printf(MSG_DEBUG, "%s: Failed to remove PAE multicast "
642 			   "group (SIOCDELMULTI)", __func__);
643 	}
644 
645 	if (drv->iff_allmulti &&
646 	    (wpa_driver_wired_get_ifflags(drv->ifname, &flags) < 0 ||
647 	     wpa_driver_wired_set_ifflags(drv->ifname,
648 					  flags & ~IFF_ALLMULTI) < 0)) {
649 		wpa_printf(MSG_DEBUG, "%s: Failed to disable allmulti mode",
650 			   __func__);
651 	}
652 
653 	if (drv->iff_up &&
654 	    wpa_driver_wired_get_ifflags(drv->ifname, &flags) == 0 &&
655 	    (flags & IFF_UP) &&
656 	    wpa_driver_wired_set_ifflags(drv->ifname, flags & ~IFF_UP) < 0) {
657 		wpa_printf(MSG_DEBUG, "%s: Failed to set the interface down",
658 			   __func__);
659 	}
660 
661 	if (drv->pf_sock != -1)
662 		close(drv->pf_sock);
663 
664 	os_free(drv);
665 }
666 
667 
668 const struct wpa_driver_ops wpa_driver_wired_ops = {
669 	.name = "wired",
670 	.desc = "Wired Ethernet driver",
671 	.hapd_init = wired_driver_hapd_init,
672 	.hapd_deinit = wired_driver_hapd_deinit,
673 	.hapd_send_eapol = wired_send_eapol,
674 	.get_ssid = wpa_driver_wired_get_ssid,
675 	.get_bssid = wpa_driver_wired_get_bssid,
676 	.get_capa = wpa_driver_wired_get_capa,
677 	.init = wpa_driver_wired_init,
678 	.deinit = wpa_driver_wired_deinit,
679 };
680