2008-02-27 20:34:43 -05:00
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/*
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2009-12-12 15:07:29 -05:00
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* Wired Ethernet driver interface
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2009-12-12 13:39:25 -05:00
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* Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
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2009-04-09 06:40:12 -04:00
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* Copyright (c) 2004, Gunter Burchardt <tira@isx.de>
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2008-02-27 20:34:43 -05:00
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*
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2012-07-02 13:50:03 -04:00
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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2008-02-27 20:34:43 -05:00
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*/
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#include "includes.h"
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2016-02-10 06:22:11 -05:00
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#include "common.h"
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#include "eloop.h"
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#include "driver.h"
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2016-11-27 14:08:44 -05:00
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#include "driver_wired_common.h"
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2016-02-10 06:22:11 -05:00
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2008-02-27 20:34:43 -05:00
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#include <sys/ioctl.h>
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2016-06-24 10:36:17 -04:00
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#undef IFNAMSIZ
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2008-02-27 20:34:43 -05:00
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#include <net/if.h>
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#ifdef __linux__
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#include <netpacket/packet.h>
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2009-04-09 06:40:12 -04:00
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#include <net/if_arp.h>
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2008-02-27 20:34:43 -05:00
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#endif /* __linux__ */
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2010-03-06 03:16:47 -05:00
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#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
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2008-02-27 20:34:43 -05:00
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#include <net/if_dl.h>
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2013-08-25 04:40:19 -04:00
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#include <net/if_media.h>
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2010-03-06 03:16:47 -05:00
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#endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) */
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2010-08-28 04:40:07 -04:00
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#ifdef __sun__
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#include <sys/sockio.h>
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#endif /* __sun__ */
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2008-02-27 20:34:43 -05:00
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2009-11-23 09:14:39 -05:00
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#ifdef _MSC_VER
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#pragma pack(push, 1)
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#endif /* _MSC_VER */
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struct ieee8023_hdr {
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u8 dest[6];
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u8 src[6];
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u16 ethertype;
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} STRUCT_PACKED;
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#ifdef _MSC_VER
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#pragma pack(pop)
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#endif /* _MSC_VER */
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2008-02-27 20:34:43 -05:00
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struct wpa_driver_wired_data {
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2016-11-27 14:08:44 -05:00
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struct driver_wired_common_data common;
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2009-04-09 06:40:12 -04:00
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int dhcp_sock; /* socket for dhcp packets */
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int use_pae_group_addr;
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};
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/* TODO: detecting new devices should eventually be changed from using DHCP
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* snooping to trigger on any packet from a new layer 2 MAC address, e.g.,
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* based on ebtables, etc. */
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struct dhcp_message {
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u_int8_t op;
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u_int8_t htype;
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u_int8_t hlen;
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u_int8_t hops;
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u_int32_t xid;
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u_int16_t secs;
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u_int16_t flags;
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u_int32_t ciaddr;
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u_int32_t yiaddr;
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u_int32_t siaddr;
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u_int32_t giaddr;
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u_int8_t chaddr[16];
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u_int8_t sname[64];
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u_int8_t file[128];
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u_int32_t cookie;
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u_int8_t options[308]; /* 312 - cookie */
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2008-02-27 20:34:43 -05:00
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};
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2010-01-09 03:53:44 -05:00
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#ifdef __linux__
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2009-12-12 15:07:29 -05:00
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static void handle_data(void *ctx, unsigned char *buf, size_t len)
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2009-04-09 06:40:12 -04:00
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{
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2009-12-12 15:07:29 -05:00
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#ifdef HOSTAPD
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2009-04-09 06:40:12 -04:00
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struct ieee8023_hdr *hdr;
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u8 *pos, *sa;
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size_t left;
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2010-01-03 09:46:18 -05:00
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union wpa_event_data event;
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2009-04-09 06:40:12 -04:00
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/* must contain at least ieee8023_hdr 6 byte source, 6 byte dest,
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* 2 byte ethertype */
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if (len < 14) {
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wpa_printf(MSG_MSGDUMP, "handle_data: too short (%lu)",
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(unsigned long) len);
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return;
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}
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hdr = (struct ieee8023_hdr *) buf;
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switch (ntohs(hdr->ethertype)) {
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case ETH_P_PAE:
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wpa_printf(MSG_MSGDUMP, "Received EAPOL packet");
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sa = hdr->src;
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2010-01-03 09:46:18 -05:00
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os_memset(&event, 0, sizeof(event));
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event.new_sta.addr = sa;
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wpa_supplicant_event(ctx, EVENT_NEW_STA, &event);
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2009-04-09 06:40:12 -04:00
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pos = (u8 *) (hdr + 1);
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left = len - sizeof(*hdr);
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2010-01-03 11:35:01 -05:00
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drv_event_eapol_rx(ctx, sa, pos, left);
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2009-04-09 06:40:12 -04:00
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break;
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default:
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wpa_printf(MSG_DEBUG, "Unknown ethertype 0x%04x in data frame",
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ntohs(hdr->ethertype));
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break;
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}
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2009-12-12 15:07:29 -05:00
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#endif /* HOSTAPD */
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2009-04-09 06:40:12 -04:00
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}
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static void handle_read(int sock, void *eloop_ctx, void *sock_ctx)
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{
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int len;
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unsigned char buf[3000];
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len = recv(sock, buf, sizeof(buf), 0);
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if (len < 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
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2009-04-09 06:40:12 -04:00
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return;
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}
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2009-12-12 15:07:29 -05:00
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handle_data(eloop_ctx, buf, len);
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2009-04-09 06:40:12 -04:00
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}
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static void handle_dhcp(int sock, void *eloop_ctx, void *sock_ctx)
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{
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int len;
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unsigned char buf[3000];
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struct dhcp_message *msg;
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u8 *mac_address;
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2010-01-03 09:46:18 -05:00
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union wpa_event_data event;
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2009-04-09 06:40:12 -04:00
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len = recv(sock, buf, sizeof(buf), 0);
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if (len < 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "recv: %s", strerror(errno));
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2009-04-09 06:40:12 -04:00
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return;
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}
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/* must contain at least dhcp_message->chaddr */
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if (len < 44) {
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wpa_printf(MSG_MSGDUMP, "handle_dhcp: too short (%d)", len);
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return;
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}
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msg = (struct dhcp_message *) buf;
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mac_address = (u8 *) &(msg->chaddr);
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wpa_printf(MSG_MSGDUMP, "Got DHCP broadcast packet from " MACSTR,
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MAC2STR(mac_address));
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2010-01-03 09:46:18 -05:00
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os_memset(&event, 0, sizeof(event));
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event.new_sta.addr = mac_address;
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wpa_supplicant_event(eloop_ctx, EVENT_NEW_STA, &event);
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2009-04-09 06:40:12 -04:00
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}
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2010-01-09 03:53:44 -05:00
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#endif /* __linux__ */
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2009-04-09 06:40:12 -04:00
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2009-04-17 04:55:51 -04:00
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static int wired_init_sockets(struct wpa_driver_wired_data *drv, u8 *own_addr)
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2009-04-09 06:40:12 -04:00
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{
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2010-01-09 03:53:44 -05:00
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#ifdef __linux__
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2009-04-09 06:40:12 -04:00
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struct ifreq ifr;
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struct sockaddr_ll addr;
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struct sockaddr_in addr2;
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int n = 1;
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2016-11-27 14:08:44 -05:00
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drv->common.sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_PAE));
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if (drv->common.sock < 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "socket[PF_PACKET,SOCK_RAW]: %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2016-11-27 14:08:44 -05:00
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if (eloop_register_read_sock(drv->common.sock, handle_read,
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drv->common.ctx, NULL)) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_INFO, "Could not register read socket");
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memset(&ifr, 0, sizeof(ifr));
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2016-11-27 14:08:44 -05:00
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os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
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if (ioctl(drv->common.sock, SIOCGIFINDEX, &ifr) != 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "ioctl(SIOCGIFINDEX): %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memset(&addr, 0, sizeof(addr));
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2009-04-09 06:40:12 -04:00
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addr.sll_family = AF_PACKET;
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addr.sll_ifindex = ifr.ifr_ifindex;
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wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
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addr.sll_ifindex);
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2016-11-27 14:08:44 -05:00
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if (bind(drv->common.sock, (struct sockaddr *) &addr, sizeof(addr)) < 0)
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{
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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/* filter multicast address */
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2016-11-27 14:08:44 -05:00
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if (wired_multicast_membership(drv->common.sock, ifr.ifr_ifindex,
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2009-12-12 15:18:37 -05:00
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pae_group_addr, 1) < 0) {
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wpa_printf(MSG_ERROR, "wired: Failed to add multicast group "
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"membership");
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memset(&ifr, 0, sizeof(ifr));
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2016-11-27 14:08:44 -05:00
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os_strlcpy(ifr.ifr_name, drv->common.ifname, sizeof(ifr.ifr_name));
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if (ioctl(drv->common.sock, SIOCGIFHWADDR, &ifr) != 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "ioctl(SIOCGIFHWADDR): %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_INFO, "Invalid HW-addr family 0x%04x",
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ifr.ifr_hwaddr.sa_family);
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memcpy(own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
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2009-04-09 06:40:12 -04:00
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/* setup dhcp listen socket for sta detection */
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if ((drv->dhcp_sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "socket call failed for dhcp: %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2016-11-27 14:08:44 -05:00
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if (eloop_register_read_sock(drv->dhcp_sock, handle_dhcp,
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drv->common.ctx, NULL)) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_INFO, "Could not register read socket");
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memset(&addr2, 0, sizeof(addr2));
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2009-04-09 06:40:12 -04:00
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addr2.sin_family = AF_INET;
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addr2.sin_port = htons(67);
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addr2.sin_addr.s_addr = INADDR_ANY;
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if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_REUSEADDR, (char *) &n,
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sizeof(n)) == -1) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_REUSEADDR]: %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BROADCAST, (char *) &n,
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sizeof(n)) == -1) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "setsockopt[SOL_SOCKET,SO_BROADCAST]: %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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2009-12-25 04:54:02 -05:00
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os_memset(&ifr, 0, sizeof(ifr));
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2016-11-27 14:08:44 -05:00
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os_strlcpy(ifr.ifr_ifrn.ifrn_name, drv->common.ifname, IFNAMSIZ);
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2009-04-09 06:40:12 -04:00
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if (setsockopt(drv->dhcp_sock, SOL_SOCKET, SO_BINDTODEVICE,
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(char *) &ifr, sizeof(ifr)) < 0) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR,
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"setsockopt[SOL_SOCKET,SO_BINDTODEVICE]: %s",
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strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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if (bind(drv->dhcp_sock, (struct sockaddr *) &addr2,
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sizeof(struct sockaddr)) == -1) {
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2014-12-24 05:43:35 -05:00
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wpa_printf(MSG_ERROR, "bind: %s", strerror(errno));
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2009-04-09 06:40:12 -04:00
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return -1;
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}
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return 0;
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2010-01-09 03:53:44 -05:00
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#else /* __linux__ */
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return -1;
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#endif /* __linux__ */
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2009-04-09 06:40:12 -04:00
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}
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static int wired_send_eapol(void *priv, const u8 *addr,
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|
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const u8 *data, size_t data_len, int encrypt,
|
2011-04-02 15:03:05 -04:00
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const u8 *own_addr, u32 flags)
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2009-04-09 06:40:12 -04:00
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{
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struct wpa_driver_wired_data *drv = priv;
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struct ieee8023_hdr *hdr;
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|
size_t len;
|
|
|
|
u8 *pos;
|
|
|
|
int res;
|
|
|
|
|
|
|
|
len = sizeof(*hdr) + data_len;
|
|
|
|
hdr = os_zalloc(len);
|
|
|
|
if (hdr == NULL) {
|
2014-12-24 05:43:35 -05:00
|
|
|
wpa_printf(MSG_INFO,
|
|
|
|
"malloc() failed for wired_send_eapol(len=%lu)",
|
|
|
|
(unsigned long) len);
|
2009-04-09 06:40:12 -04:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2009-12-25 04:54:02 -05:00
|
|
|
os_memcpy(hdr->dest, drv->use_pae_group_addr ? pae_group_addr : addr,
|
|
|
|
ETH_ALEN);
|
|
|
|
os_memcpy(hdr->src, own_addr, ETH_ALEN);
|
2009-04-09 06:40:12 -04:00
|
|
|
hdr->ethertype = htons(ETH_P_PAE);
|
|
|
|
|
|
|
|
pos = (u8 *) (hdr + 1);
|
2009-12-25 04:54:02 -05:00
|
|
|
os_memcpy(pos, data, data_len);
|
2009-04-09 06:40:12 -04:00
|
|
|
|
2016-11-27 14:08:44 -05:00
|
|
|
res = send(drv->common.sock, (u8 *) hdr, len, 0);
|
2009-12-25 04:54:02 -05:00
|
|
|
os_free(hdr);
|
2009-04-09 06:40:12 -04:00
|
|
|
|
|
|
|
if (res < 0) {
|
2014-12-24 05:43:35 -05:00
|
|
|
wpa_printf(MSG_ERROR,
|
|
|
|
"wired_send_eapol - packet len: %lu - failed: send: %s",
|
|
|
|
(unsigned long) len, strerror(errno));
|
2009-04-09 06:40:12 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-04-09 16:28:21 -04:00
|
|
|
static void * wired_driver_hapd_init(struct hostapd_data *hapd,
|
|
|
|
struct wpa_init_params *params)
|
2009-04-09 06:40:12 -04:00
|
|
|
{
|
|
|
|
struct wpa_driver_wired_data *drv;
|
|
|
|
|
|
|
|
drv = os_zalloc(sizeof(struct wpa_driver_wired_data));
|
|
|
|
if (drv == NULL) {
|
2014-12-24 05:43:35 -05:00
|
|
|
wpa_printf(MSG_INFO,
|
|
|
|
"Could not allocate memory for wired driver data");
|
2009-04-09 06:40:12 -04:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2016-11-27 14:08:44 -05:00
|
|
|
drv->common.ctx = hapd;
|
|
|
|
os_strlcpy(drv->common.ifname, params->ifname,
|
|
|
|
sizeof(drv->common.ifname));
|
2009-04-09 16:28:21 -04:00
|
|
|
drv->use_pae_group_addr = params->use_pae_group_addr;
|
2009-04-09 06:40:12 -04:00
|
|
|
|
2009-04-17 04:55:51 -04:00
|
|
|
if (wired_init_sockets(drv, params->own_addr)) {
|
2009-12-25 04:54:02 -05:00
|
|
|
os_free(drv);
|
2009-04-09 06:40:12 -04:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return drv;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void wired_driver_hapd_deinit(void *priv)
|
|
|
|
{
|
|
|
|
struct wpa_driver_wired_data *drv = priv;
|
|
|
|
|
2016-11-27 14:08:44 -05:00
|
|
|
if (drv->common.sock >= 0) {
|
|
|
|
eloop_unregister_read_sock(drv->common.sock);
|
|
|
|
close(drv->common.sock);
|
2014-11-16 17:57:15 -05:00
|
|
|
}
|
2009-04-09 06:40:12 -04:00
|
|
|
|
2014-11-16 17:57:15 -05:00
|
|
|
if (drv->dhcp_sock >= 0) {
|
|
|
|
eloop_unregister_read_sock(drv->dhcp_sock);
|
2009-04-09 06:40:12 -04:00
|
|
|
close(drv->dhcp_sock);
|
2014-11-16 17:57:15 -05:00
|
|
|
}
|
2009-04-09 06:40:12 -04:00
|
|
|
|
2009-12-25 04:54:02 -05:00
|
|
|
os_free(drv);
|
2009-04-09 06:40:12 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-02-27 20:34:43 -05:00
|
|
|
static int wpa_driver_wired_get_ssid(void *priv, u8 *ssid)
|
|
|
|
{
|
|
|
|
ssid[0] = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int wpa_driver_wired_get_bssid(void *priv, u8 *bssid)
|
|
|
|
{
|
|
|
|
/* Report PAE group address as the "BSSID" for wired connection. */
|
|
|
|
os_memcpy(bssid, pae_group_addr, ETH_ALEN);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
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;
|
|
|
|
|
2016-11-27 14:08:50 -05:00
|
|
|
if (driver_wired_init_common(&drv->common, ifname, ctx) < 0) {
|
2008-02-27 20:34:43 -05:00
|
|
|
os_free(drv);
|
|
|
|
return NULL;
|
2013-08-25 04:40:19 -04:00
|
|
|
}
|
2008-02-27 20:34:43 -05:00
|
|
|
|
|
|
|
return drv;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static void wpa_driver_wired_deinit(void *priv)
|
|
|
|
{
|
|
|
|
struct wpa_driver_wired_data *drv = priv;
|
2009-04-09 06:40:12 -04:00
|
|
|
|
2016-11-27 14:08:51 -05:00
|
|
|
driver_wired_deinit_common(&drv->common);
|
2008-02-27 20:34:43 -05:00
|
|
|
os_free(drv);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
const struct wpa_driver_ops wpa_driver_wired_ops = {
|
|
|
|
.name = "wired",
|
2009-04-09 06:40:12 -04:00
|
|
|
.desc = "Wired Ethernet driver",
|
|
|
|
.hapd_init = wired_driver_hapd_init,
|
|
|
|
.hapd_deinit = wired_driver_hapd_deinit,
|
|
|
|
.hapd_send_eapol = wired_send_eapol,
|
2008-02-27 20:34:43 -05:00
|
|
|
.get_ssid = wpa_driver_wired_get_ssid,
|
|
|
|
.get_bssid = wpa_driver_wired_get_bssid,
|
2016-11-27 14:08:52 -05:00
|
|
|
.get_capa = driver_wired_get_capa,
|
2008-02-27 20:34:43 -05:00
|
|
|
.init = wpa_driver_wired_init,
|
|
|
|
.deinit = wpa_driver_wired_deinit,
|
|
|
|
};
|