[thirdparty/hostap.git] / src / drivers / driver_wired.c

/*
 * Wired Ethernet driver interface
 * Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
 * Copyright (c) 2004, Gunter Burchardt <tira@isx.de>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "includes.h"

#include "common.h"
#include "eloop.h"
#include "driver.h"
#include "driver_wired_common.h"

#include <sys/ioctl.h>
#undef IFNAMSIZ
#include <net/if.h>
#ifdef __linux__
#include <netpacket/packet.h>
#include <net/if_arp.h>
#endif /* __linux__ */
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
#include <net/if_dl.h>
#include <net/if_media.h>
#endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) */
#ifdef __sun__
#include <sys/sockio.h>
#endif /* __sun__ */

#ifdef _MSC_VER
#pragma pack(push, 1)
#endif /* _MSC_VER */

struct ieee8023_hdr {
	u8 dest[6];
	u8 src[6];
	u16 ethertype;
} STRUCT_PACKED;

#ifdef _MSC_VER
#pragma pack(pop)
#endif /* _MSC_VER */


struct wpa_driver_wired_data {
	struct driver_wired_common_data common;

	int dhcp_sock; /* socket for dhcp packets */
	int use_pae_group_addr;
};


/* TODO: detecting new devices should eventually be changed from using DHCP
 * snooping to trigger on any packet from a new layer 2 MAC address, e.g.,
 * based on ebtables, etc. */

struct dhcp_message {
	u_int8_t op;
	u_int8_t htype;
	u_int8_t hlen;
	u_int8_t hops;
	u_int32_t xid;
	u_int16_t secs;
	u_int16_t flags;
	u_int32_t ciaddr;
	u_int32_t yiaddr;
	u_int32_t siaddr;
	u_int32_t giaddr;
	u_int8_t chaddr[16];
	u_int8_t sname[64];
	u_int8_t file[128];
	u_int32_t cookie;
	u_int8_t options[308]; /* 312 - cookie */
};


#ifdef __linux__
static void handle_data(void *ctx, unsigned char *buf, size_t len)
{
#ifdef HOSTAPD
	struct ieee8023_hdr *hdr;
	u8 *pos, *sa;
	size_t left;
	union wpa_event_data event;

	/* must contain at least ieee8023_hdr 6 byte source, 6 byte dest,
	 * 2 byte ethertype */
	if (len < 14) {
		wpa_printf(MSG_MSGDUMP, "handle_data: too short (%lu)",
			   (unsigned long) len);
		return;
	}

	hdr = (struct ieee8023_hdr *) buf;

	switch (ntohs(hdr->ethertype)) {
	case ETH_P_PAE:
		wpa_printf(MSG_MSGDUMP, "Received EAPOL packet");
		sa = hdr->src;
		os_memset(&event, 0, sizeof(event));
		event.new_sta.addr = sa;
		wpa_supplicant_event(ctx, EVENT_NEW_STA, &event);

		pos = (u8 *) (hdr + 1);
		left = len - sizeof(*hdr);
		drv_event_eapol_rx(ctx, sa, pos, left);
		break;

	default:
		wpa_printf(MSG_DEBUG, "Unknown ethertype 0x%04x in data frame",
			   ntohs(hdr->ethertype));
		break;
	}
#endif /* HOSTAPD */
}


static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
{
	int len;
	unsigned char buf[3000];

	len = recv(sock, buf, sizeof(buf), 0);
	if (len < 0) {
		wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
		return;
	}

	handle_data(eloop_ctx, buf, len);
}


static void handle_dhcp(int sock, void *eloop_ctx, void *sock_ctx)
{
	int len;
	unsigned char buf[3000];
	struct dhcp_message *msg;
	u8 *mac_address;
	union wpa_event_data event;

	len = recv(sock, buf, sizeof(buf), 0);
	if (len < 0) {
		wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
		return;
	}

	/* must contain at least dhcp_message->chaddr */
	if (len < 44) {
		wpa_printf(MSG_MSGDUMP, "handle_dhcp: too short (%d)", len);
		return;
	}

	msg = (struct dhcp_message *) buf;
	mac_address = (u8 *) &(msg->chaddr);

	wpa_printf(MSG_MSGDUMP, "Got DHCP broadcast packet from " MACSTR,
		   MAC2STR(mac_address));

	os_memset(&event, 0, sizeof(event));
	event.new_sta.addr = mac_address;
	wpa_supplicant_event(eloop_ctx, EVENT_NEW_STA, &event);
}
#endif /* __linux__ */


static int wired_init_sockets(struct wpa_driver_wired_data *drv, u8 *own_addr)
{
#ifdef __linux__
	struct ifreq ifr;
	struct sockaddr_ll addr;
	struct sockaddr_in addr2;
	int n = 1;

	drv->common.sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_PAE));
	if (drv->common.sock < 0) {
		wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
			   strerror(errno));
		return -1;
	}

	if (eloop_register_read_sock(drv->common.sock, handle_read,
				     drv->common.ctx, NULL)) {
		wpa_printf(MSG_INFO, "Could not register read socket");
		return -1;
	}

	os_memset(&ifr, 0, sizeof(ifr));
	os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
	if (ioctl(drv->common.sock, SIOCGIFINDEX, &ifr) != 0) {
		wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
			   strerror(errno));
		return -1;
	}

	os_memset(&addr, 0, sizeof(addr));
	addr.sll_family = AF_PACKET;
	addr.sll_ifindex = ifr.ifr_ifindex;
	wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
		   addr.sll_ifindex);

	if (bind(drv->common.sock, (struct sockaddr *) &addr, sizeof(addr)) < 0)
	{
		wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
		return -1;
	}

	/* filter multicast address */
	if (wired_multicast_membership(drv->common.sock, ifr.ifr_ifindex,
				       pae_group_addr, 1) < 0) {
		wpa_printf(MSG_ERROR, "wired: Failed to add multicast group "
			   "membership");
		return -1;
	}

	os_memset(&ifr, 0, sizeof(ifr));
	os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
	if (ioctl(drv->common.sock, SIOCGIFHWADDR, &ifr) != 0) {
		wpa_printf(MSG_ERROR, "ioctl(SIOCGIFHWADDR): %s",
			   strerror(errno));
		return -1;
	}

	if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
		wpa_printf(MSG_INFO, "Invalid HW-addr family 0x%04x",
			   ifr.ifr_hwaddr.sa_family);
		return -1;
	}
	os_memcpy(own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);

	/* setup dhcp listen socket for sta detection */
	if ((drv->dhcp_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
		wpa_printf(MSG_ERROR, "socket call failed for dhcp: %s",
			   strerror(errno));
		return -1;
	}

	if (eloop_register_read_sock(drv->dhcp_sock, handle_dhcp,
				     drv->common.ctx, NULL)) {
		wpa_printf(MSG_INFO, "Could not register read socket");
		return -1;
	}

	os_memset(&addr2, 0, sizeof(addr2));
	addr2.sin_family = AF_INET;
	addr2.sin_port = htons(67);
	addr2.sin_addr.s_addr = INADDR_ANY;

	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_REUSEADDR, (char *) &n,
		       sizeof(n)) == -1) {
		wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_REUSEADDR]: %s",
			   strerror(errno));
		return -1;
	}
	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BROADCAST, (char *) &n,
		       sizeof(n)) == -1) {
		wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_BROADCAST]: %s",
			   strerror(errno));
		return -1;
	}

	os_memset(&ifr, 0, sizeof(ifr));
	os_strlcpy(ifr.ifr_ifrn.ifrn_name, drv->common.ifname, IFNAMSIZ);
	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BINDTODEVICE,
		       (char *) &ifr, sizeof(ifr)) < 0) {
		wpa_printf(MSG_ERROR,
			   "setsockopt[SOL_SOCKET,SO_BINDTODEVICE]: %s",
			   strerror(errno));
		return -1;
	}

	if (bind(drv->dhcp_sock, (struct sockaddr *) &addr2,
		 sizeof(struct sockaddr)) == -1) {
		wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
		return -1;
	}

	return 0;
#else /* __linux__ */
	return -1;
#endif /* __linux__ */
}


static int wired_send_eapol(void *priv, const u8 *addr,
			    const u8 *data, size_t data_len, int encrypt,
			    const u8 *own_addr, u32 flags)
{
	struct wpa_driver_wired_data *drv = priv;
	struct ieee8023_hdr *hdr;
	size_t len;
	u8 *pos;
	int res;

	len = sizeof(*hdr) + data_len;
	hdr = os_zalloc(len);
	if (hdr == NULL) {
		wpa_printf(MSG_INFO,
			   "malloc() failed for wired_send_eapol(len=%lu)",
			   (unsigned long) len);
		return -1;
	}

	os_memcpy(hdr->dest, drv->use_pae_group_addr ? pae_group_addr : addr,
		  ETH_ALEN);
	os_memcpy(hdr->src, own_addr, ETH_ALEN);
	hdr->ethertype = htons(ETH_P_PAE);

	pos = (u8 *) (hdr + 1);
	os_memcpy(pos, data, data_len);

	res = send(drv->common.sock, (u8 *) hdr, len, 0);
	os_free(hdr);

	if (res < 0) {
		wpa_printf(MSG_ERROR,
			   "wired_send_eapol - packet len: %lu - failed: send: %s",
			   (unsigned long) len, strerror(errno));
	}

	return res;
}


static void * wired_driver_hapd_init(struct hostapd_data *hapd,
				     struct wpa_init_params *params)
{
	struct wpa_driver_wired_data *drv;

	drv = os_zalloc(sizeof(struct wpa_driver_wired_data));
	if (drv == NULL) {
		wpa_printf(MSG_INFO,
			   "Could not allocate memory for wired driver data");
		return NULL;
	}

	drv->common.ctx = hapd;
	os_strlcpy(drv->common.ifname, params->ifname,
		   sizeof(drv->common.ifname));
	drv->use_pae_group_addr = params->use_pae_group_addr;

	if (wired_init_sockets(drv, params->own_addr)) {
		os_free(drv);
		return NULL;
	}

	return drv;
}


static void wired_driver_hapd_deinit(void *priv)
{
	struct wpa_driver_wired_data *drv = priv;

	if (drv->common.sock >= 0) {
		eloop_unregister_read_sock(drv->common.sock);
		close(drv->common.sock);
	}

	if (drv->dhcp_sock >= 0) {
		eloop_unregister_read_sock(drv->dhcp_sock);
		close(drv->dhcp_sock);
	}

	os_free(drv);
}


static void * wpa_driver_wired_init(void *ctx, const char *ifname)
{
	struct wpa_driver_wired_data *drv;

	drv = os_zalloc(sizeof(*drv));
	if (drv == NULL)
		return NULL;

	if (driver_wired_init_common(&drv->common, ifname, ctx) < 0) {
		os_free(drv);
		return NULL;
	}

	return drv;
}


static void wpa_driver_wired_deinit(void *priv)
{
	struct wpa_driver_wired_data *drv = priv;

	driver_wired_deinit_common(&drv->common);
	os_free(drv);
}


const struct wpa_driver_ops wpa_driver_wired_ops = {
	.name = "wired",
	.desc = "Wired Ethernet driver",
	.hapd_init = wired_driver_hapd_init,
	.hapd_deinit = wired_driver_hapd_deinit,
	.hapd_send_eapol = wired_send_eapol,
	.get_ssid = driver_wired_get_ssid,
	.get_bssid = driver_wired_get_bssid,
	.get_capa = driver_wired_get_capa,
	.init = wpa_driver_wired_init,
	.deinit = wpa_driver_wired_deinit,
};
Commit	Line	Data
6fc6879b	1	/*
caf005b0	2	* Wired Ethernet driver interface
05310066	3	* Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
c5121837	4	* Copyright (c) 2004, Gunter Burchardt <tira@isx.de>
6fc6879b	5	*
0cb87fde JM	6	* This software may be distributed under the terms of the BSD license.
0cb87fde JM	7	* See README for more details.
6fc6879b JM	8	*/
	9
	10	#include "includes.h"
a084c244 RM	11
	12	#include "common.h"
	13	#include "eloop.h"
	14	#include "driver.h"
0abc8d10	15	#include "driver_wired_common.h"
a084c244	16
6fc6879b	17	#include <sys/ioctl.h>
2f13e54d	18	#undef IFNAMSIZ
6fc6879b JM	19	#include <net/if.h>
	20	#ifdef __linux__
	21	#include <netpacket/packet.h>
c5121837	22	#include <net/if_arp.h>
6fc6879b	23	#endif /* __linux__ */
09bd6e8c	24	#if defined(__FreeBSD__) \|\| defined(__DragonFly__) \|\| defined(__FreeBSD_kernel__)
6fc6879b	25	#include <net/if_dl.h>
ba873bdf	26	#include <net/if_media.h>
09bd6e8c	27	#endif /* defined(__FreeBSD__) \|\| defined(__DragonFly__) \|\| defined(__FreeBSD_kernel__) */
60da5e0f MH	28	#ifdef __sun__
	29	#include <sys/sockio.h>
	30	#endif /* __sun__ */
6fc6879b	31
d994a9b5 JM	32	#ifdef _MSC_VER
	33	#pragma pack(push, 1)
	34	#endif /* _MSC_VER */
	35
	36	struct ieee8023_hdr {
	37	u8 dest[6];
	38	u8 src[6];
	39	u16 ethertype;
	40	} STRUCT_PACKED;
	41
	42	#ifdef _MSC_VER
	43	#pragma pack(pop)
	44	#endif /* _MSC_VER */
	45
6fc6879b JM	46
6fc6879b JM	47	struct wpa_driver_wired_data {
0abc8d10	48	struct driver_wired_common_data common;
c5121837	49
c5121837 JM	50	int dhcp_sock; /* socket for dhcp packets */
c5121837 JM	51	int use_pae_group_addr;
c5121837 JM	52	};
	53
	54
c5121837 JM	55	/* TODO: detecting new devices should eventually be changed from using DHCP
	56	* snooping to trigger on any packet from a new layer 2 MAC address, e.g.,
	57	* based on ebtables, etc. */
	58
	59	struct dhcp_message {
	60	u_int8_t op;
	61	u_int8_t htype;
	62	u_int8_t hlen;
	63	u_int8_t hops;
	64	u_int32_t xid;
	65	u_int16_t secs;
	66	u_int16_t flags;
	67	u_int32_t ciaddr;
	68	u_int32_t yiaddr;
	69	u_int32_t siaddr;
	70	u_int32_t giaddr;
	71	u_int8_t chaddr[16];
	72	u_int8_t sname[64];
	73	u_int8_t file[128];
	74	u_int32_t cookie;
	75	u_int8_t options[308]; /* 312 - cookie */
6fc6879b JM	76	};
	77
	78
60e1ce76	79	#ifdef __linux__
caf005b0	80	static void handle_data(void ctx, unsigned char buf, size_t len)
c5121837	81	{
caf005b0	82	#ifdef HOSTAPD
c5121837 JM	83	struct ieee8023_hdr *hdr;
	84	u8 pos, sa;
	85	size_t left;
a70a5d6d	86	union wpa_event_data event;
c5121837 JM	87
	88	/* must contain at least ieee8023_hdr 6 byte source, 6 byte dest,
	89	* 2 byte ethertype */
	90	if (len < 14) {
	91	wpa_printf(MSG_MSGDUMP, "handle_data: too short (%lu)",
	92	(unsigned long) len);
	93	return;
	94	}
	95
	96	hdr = (struct ieee8023_hdr *) buf;
	97
	98	switch (ntohs(hdr->ethertype)) {
3d1d4691 JM	99	case ETH_P_PAE:
	100	wpa_printf(MSG_MSGDUMP, "Received EAPOL packet");
	101	sa = hdr->src;
	102	os_memset(&event, 0, sizeof(event));
	103	event.new_sta.addr = sa;
	104	wpa_supplicant_event(ctx, EVENT_NEW_STA, &event);
	105
	106	pos = (u8 *) (hdr + 1);
	107	left = len - sizeof(*hdr);
	108	drv_event_eapol_rx(ctx, sa, pos, left);
c5121837 JM	109	break;
	110
	111	default:
	112	wpa_printf(MSG_DEBUG, "Unknown ethertype 0x%04x in data frame",
	113	ntohs(hdr->ethertype));
	114	break;
	115	}
caf005b0	116	#endif /* HOSTAPD */
c5121837 JM	117	}
	118
	119
	120	static void handle_read(int sock, void eloop_ctx, void sock_ctx)
	121	{
c5121837 JM	122	int len;
	123	unsigned char buf[3000];
	124
	125	len = recv(sock, buf, sizeof(buf), 0);
	126	if (len < 0) {
a193231d	127	wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
c5121837 JM	128	return;
	129	}
	130
caf005b0	131	handle_data(eloop_ctx, buf, len);
c5121837 JM	132	}
	133
	134
	135	static void handle_dhcp(int sock, void eloop_ctx, void sock_ctx)
	136	{
c5121837 JM	137	int len;
	138	unsigned char buf[3000];
	139	struct dhcp_message *msg;
	140	u8 *mac_address;
a70a5d6d	141	union wpa_event_data event;
c5121837 JM	142
	143	len = recv(sock, buf, sizeof(buf), 0);
	144	if (len < 0) {
a193231d	145	wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
c5121837 JM	146	return;
	147	}
	148
	149	/* must contain at least dhcp_message->chaddr */
	150	if (len < 44) {
	151	wpa_printf(MSG_MSGDUMP, "handle_dhcp: too short (%d)", len);
	152	return;
	153	}
	154
	155	msg = (struct dhcp_message *) buf;
	156	mac_address = (u8 *) &(msg->chaddr);
	157
	158	wpa_printf(MSG_MSGDUMP, "Got DHCP broadcast packet from " MACSTR,
	159	MAC2STR(mac_address));
	160
a70a5d6d JM	161	os_memset(&event, 0, sizeof(event));
	162	event.new_sta.addr = mac_address;
	163	wpa_supplicant_event(eloop_ctx, EVENT_NEW_STA, &event);
c5121837	164	}
60e1ce76	165	#endif /* __linux__ */
c5121837 JM	166
c5121837 JM	167
412036f5	168	static int wired_init_sockets(struct wpa_driver_wired_data drv, u8 own_addr)
c5121837	169	{
60e1ce76	170	#ifdef __linux__
c5121837 JM	171	struct ifreq ifr;
	172	struct sockaddr_ll addr;
	173	struct sockaddr_in addr2;
c5121837 JM	174	int n = 1;
c5121837 JM	175
0abc8d10 SD	176	drv->common.sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_PAE));
0abc8d10 SD	177	if (drv->common.sock < 0) {
a193231d JM	178	wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
a193231d JM	179	strerror(errno));
c5121837 JM	180	return -1;
	181	}
	182
0abc8d10 SD	183	if (eloop_register_read_sock(drv->common.sock, handle_read,
0abc8d10 SD	184	drv->common.ctx, NULL)) {
a193231d	185	wpa_printf(MSG_INFO, "Could not register read socket");
c5121837 JM	186	return -1;
	187	}
	188
64ee63a0	189	os_memset(&ifr, 0, sizeof(ifr));
0abc8d10 SD	190	os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
0abc8d10 SD	191	if (ioctl(drv->common.sock, SIOCGIFINDEX, &ifr) != 0) {
a193231d JM	192	wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
a193231d JM	193	strerror(errno));
c5121837 JM	194	return -1;
	195	}
	196
64ee63a0	197	os_memset(&addr, 0, sizeof(addr));
c5121837 JM	198	addr.sll_family = AF_PACKET;
	199	addr.sll_ifindex = ifr.ifr_ifindex;
	200	wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
	201	addr.sll_ifindex);
	202
0abc8d10 SD	203	if (bind(drv->common.sock, (struct sockaddr *) &addr, sizeof(addr)) < 0)
0abc8d10 SD	204	{
a193231d	205	wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
c5121837 JM	206	return -1;
	207	}
	208
	209	/* filter multicast address */
0abc8d10	210	if (wired_multicast_membership(drv->common.sock, ifr.ifr_ifindex,
c779b04a JM	211	pae_group_addr, 1) < 0) {
	212	wpa_printf(MSG_ERROR, "wired: Failed to add multicast group "
	213	"membership");
c5121837 JM	214	return -1;
	215	}
	216
64ee63a0	217	os_memset(&ifr, 0, sizeof(ifr));
0abc8d10 SD	218	os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
0abc8d10 SD	219	if (ioctl(drv->common.sock, SIOCGIFHWADDR, &ifr) != 0) {
a193231d JM	220	wpa_printf(MSG_ERROR, "ioctl(SIOCGIFHWADDR): %s",
a193231d JM	221	strerror(errno));
c5121837 JM	222	return -1;
	223	}
	224
	225	if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
a193231d JM	226	wpa_printf(MSG_INFO, "Invalid HW-addr family 0x%04x",
a193231d JM	227	ifr.ifr_hwaddr.sa_family);
c5121837 JM	228	return -1;
c5121837 JM	229	}
64ee63a0	230	os_memcpy(own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
c5121837 JM	231
	232	/* setup dhcp listen socket for sta detection */
	233	if ((drv->dhcp_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
a193231d JM	234	wpa_printf(MSG_ERROR, "socket call failed for dhcp: %s",
a193231d JM	235	strerror(errno));
c5121837 JM	236	return -1;
	237	}
	238
0abc8d10 SD	239	if (eloop_register_read_sock(drv->dhcp_sock, handle_dhcp,
0abc8d10 SD	240	drv->common.ctx, NULL)) {
a193231d	241	wpa_printf(MSG_INFO, "Could not register read socket");
c5121837 JM	242	return -1;
	243	}
	244
64ee63a0	245	os_memset(&addr2, 0, sizeof(addr2));
c5121837 JM	246	addr2.sin_family = AF_INET;
	247	addr2.sin_port = htons(67);
	248	addr2.sin_addr.s_addr = INADDR_ANY;
	249
	250	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_REUSEADDR, (char *) &n,
	251	sizeof(n)) == -1) {
a193231d JM	252	wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_REUSEADDR]: %s",
a193231d JM	253	strerror(errno));
c5121837 JM	254	return -1;
	255	}
	256	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BROADCAST, (char *) &n,
	257	sizeof(n)) == -1) {
a193231d JM	258	wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_BROADCAST]: %s",
a193231d JM	259	strerror(errno));
c5121837 JM	260	return -1;
	261	}
	262
64ee63a0	263	os_memset(&ifr, 0, sizeof(ifr));
0abc8d10	264	os_strlcpy(ifr.ifr_ifrn.ifrn_name, drv->common.ifname, IFNAMSIZ);
c5121837 JM	265	if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BINDTODEVICE,
c5121837 JM	266	(char *) &ifr, sizeof(ifr)) < 0) {
a193231d JM	267	wpa_printf(MSG_ERROR,
	268	"setsockopt[SOL_SOCKET,SO_BINDTODEVICE]: %s",
	269	strerror(errno));
c5121837 JM	270	return -1;
	271	}
	272
	273	if (bind(drv->dhcp_sock, (struct sockaddr *) &addr2,
	274	sizeof(struct sockaddr)) == -1) {
a193231d	275	wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
c5121837 JM	276	return -1;
	277	}
	278
	279	return 0;
60e1ce76 MH	280	#else /* __linux__ */
	281	return -1;
	282	#endif /* __linux__ */
c5121837 JM	283	}
	284
	285
	286	static int wired_send_eapol(void priv, const u8 addr,
	287	const u8 *data, size_t data_len, int encrypt,
4378fc14	288	const u8 *own_addr, u32 flags)
c5121837 JM	289	{
	290	struct wpa_driver_wired_data *drv = priv;
	291	struct ieee8023_hdr *hdr;
	292	size_t len;
	293	u8 *pos;
	294	int res;
	295
	296	len = sizeof(*hdr) + data_len;
	297	hdr = os_zalloc(len);
	298	if (hdr == NULL) {
a193231d JM	299	wpa_printf(MSG_INFO,
	300	"malloc() failed for wired_send_eapol(len=%lu)",
	301	(unsigned long) len);
c5121837 JM	302	return -1;
	303	}
	304
64ee63a0 JM	305	os_memcpy(hdr->dest, drv->use_pae_group_addr ? pae_group_addr : addr,
	306	ETH_ALEN);
	307	os_memcpy(hdr->src, own_addr, ETH_ALEN);
c5121837 JM	308	hdr->ethertype = htons(ETH_P_PAE);
	309
	310	pos = (u8 *) (hdr + 1);
64ee63a0	311	os_memcpy(pos, data, data_len);
c5121837	312
0abc8d10	313	res = send(drv->common.sock, (u8 *) hdr, len, 0);
64ee63a0	314	os_free(hdr);
c5121837 JM	315
c5121837 JM	316	if (res < 0) {
a193231d JM	317	wpa_printf(MSG_ERROR,
	318	"wired_send_eapol - packet len: %lu - failed: send: %s",
	319	(unsigned long) len, strerror(errno));
c5121837 JM	320	}
	321
	322	return res;
	323	}
	324
	325
92f475b4 JM	326	static void * wired_driver_hapd_init(struct hostapd_data *hapd,
92f475b4 JM	327	struct wpa_init_params *params)
c5121837 JM	328	{
	329	struct wpa_driver_wired_data *drv;
	330
	331	drv = os_zalloc(sizeof(struct wpa_driver_wired_data));
	332	if (drv == NULL) {
a193231d JM	333	wpa_printf(MSG_INFO,
a193231d JM	334	"Could not allocate memory for wired driver data");
c5121837 JM	335	return NULL;
	336	}
	337
0abc8d10 SD	338	drv->common.ctx = hapd;
	339	os_strlcpy(drv->common.ifname, params->ifname,
	340	sizeof(drv->common.ifname));
92f475b4	341	drv->use_pae_group_addr = params->use_pae_group_addr;
c5121837	342
412036f5	343	if (wired_init_sockets(drv, params->own_addr)) {
64ee63a0	344	os_free(drv);
c5121837 JM	345	return NULL;
	346	}
	347
	348	return drv;
	349	}
	350
	351
	352	static void wired_driver_hapd_deinit(void *priv)
	353	{
	354	struct wpa_driver_wired_data *drv = priv;
	355
0abc8d10 SD	356	if (drv->common.sock >= 0) {
	357	eloop_unregister_read_sock(drv->common.sock);
	358	close(drv->common.sock);
01b24c52	359	}
c5121837	360
01b24c52 JM	361	if (drv->dhcp_sock >= 0) {
01b24c52 JM	362	eloop_unregister_read_sock(drv->dhcp_sock);
c5121837	363	close(drv->dhcp_sock);
01b24c52	364	}
c5121837	365
64ee63a0	366	os_free(drv);
c5121837 JM	367	}
c5121837 JM	368
c5121837	369
6fc6879b JM	370	static void * wpa_driver_wired_init(void ctx, const char ifname)
	371	{
	372	struct wpa_driver_wired_data *drv;
6fc6879b JM	373
	374	drv = os_zalloc(sizeof(*drv));
	375	if (drv == NULL)
	376	return NULL;
6fc6879b	377
ed5ae611	378	if (driver_wired_init_common(&drv->common, ifname, ctx) < 0) {
6fc6879b JM	379	os_free(drv);
6fc6879b JM	380	return NULL;
ba873bdf	381	}
6fc6879b JM	382
	383	return drv;
	384	}
	385
	386
	387	static void wpa_driver_wired_deinit(void *priv)
	388	{
	389	struct wpa_driver_wired_data *drv = priv;
c5121837	390
ec9cfb96	391	driver_wired_deinit_common(&drv->common);
6fc6879b JM	392	os_free(drv);
	393	}
	394
	395
	396	const struct wpa_driver_ops wpa_driver_wired_ops = {
	397	.name = "wired",
c5121837	398	.desc = "Wired Ethernet driver",
c5121837 JM	399	.hapd_init = wired_driver_hapd_init,
	400	.hapd_deinit = wired_driver_hapd_deinit,
	401	.hapd_send_eapol = wired_send_eapol,
8618313b	402	.get_ssid = driver_wired_get_ssid,
d27c42ba	403	.get_bssid = driver_wired_get_bssid,
9281e5c5	404	.get_capa = driver_wired_get_capa,
6fc6879b JM	405	.init = wpa_driver_wired_init,
	406	.deinit = wpa_driver_wired_deinit,
	407	};