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/*
* WPA Supplicant - driver interaction with Broadcom wl.o driver
* Copyright (c) 2004, Nikki Chumkov <nikki@gattaca.ru>
* Copyright (c) 2004, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#include "includes.h"
#include <sys/ioctl.h>
#if 0
#include <netpacket/packet.h>
#include <net/ethernet.h> /* the L2 protocols */
#else
#include <linux/if_packet.h>
#include <linux/if_ether.h> /* The L2 protocols */
#endif
#include <net/if.h>
#include <typedefs.h>
/* wlioctl.h is a Broadcom header file and it is available, e.g., from Linksys
* WRT54G GPL tarball. */
#include <wlioctl.h>
#include "common.h"
#include "driver.h"
#include "eloop.h"
#include "wpa_supplicant.h"
#include "wpa.h"
struct wpa_driver_broadcom_data {
void *ctx;
int ioctl_sock;
int event_sock;
char ifname[IFNAMSIZ + 1];
};
#ifndef WLC_DEAUTHENTICATE
#define WLC_DEAUTHENTICATE 143
#endif
#ifndef WLC_DEAUTHENTICATE_WITH_REASON
#define WLC_DEAUTHENTICATE_WITH_REASON 201
#endif
#ifndef WLC_SET_TKIP_COUNTERMEASURES
#define WLC_SET_TKIP_COUNTERMEASURES 202
#endif
#if !defined(PSK_ENABLED) /* NEW driver interface */
#define WL_VERSION 360130
/* wireless authentication bit vector */
#define WPA_ENABLED 1
#define PSK_ENABLED 2
#define WAUTH_WPA_ENABLED(wauth) ((wauth) & WPA_ENABLED)
#define WAUTH_PSK_ENABLED(wauth) ((wauth) & PSK_ENABLED)
#define WAUTH_ENABLED(wauth) ((wauth) & (WPA_ENABLED | PSK_ENABLED))
#define WSEC_PRIMARY_KEY WL_PRIMARY_KEY
typedef wl_wsec_key_t wsec_key_t;
#endif
typedef struct {
uint32 val;
struct ether_addr ea;
uint16 res;
} wlc_deauth_t;
static void wpa_driver_broadcom_scan_timeout(void *eloop_ctx,
void *timeout_ctx);
static int broadcom_ioctl(struct wpa_driver_broadcom_data *drv, int cmd,
void *buf, int len)
{
struct ifreq ifr;
wl_ioctl_t ioc;
int ret = 0;
wpa_printf(MSG_MSGDUMP, "BROADCOM: wlioctl(%s,%d,len=%d,val=%p)",
drv->ifname, cmd, len, buf);
/* wpa_hexdump(MSG_MSGDUMP, "BROADCOM: wlioctl buf", buf, len); */
ioc.cmd = cmd;
ioc.buf = buf;
ioc.len = len;
os_strncpy(ifr.ifr_name, drv->ifname, IFNAMSIZ);
ifr.ifr_data = (caddr_t) &ioc;
if ((ret = ioctl(drv->ioctl_sock, SIOCDEVPRIVATE, &ifr)) < 0) {
if (cmd != WLC_GET_MAGIC)
perror(ifr.ifr_name);
wpa_printf(MSG_MSGDUMP, "BROADCOM: wlioctl cmd=%d res=%d",
cmd, ret);
}
return ret;
}
static int wpa_driver_broadcom_get_bssid(void *priv, u8 *bssid)
{
struct wpa_driver_broadcom_data *drv = priv;
if (broadcom_ioctl(drv, WLC_GET_BSSID, bssid, ETH_ALEN) == 0)
return 0;
os_memset(bssid, 0, ETH_ALEN);
return -1;
}
static int wpa_driver_broadcom_get_ssid(void *priv, u8 *ssid)
{
struct wpa_driver_broadcom_data *drv = priv;
wlc_ssid_t s;
if (broadcom_ioctl(drv, WLC_GET_SSID, &s, sizeof(s)) == -1)
return -1;
os_memcpy(ssid, s.SSID, s.SSID_len);
return s.SSID_len;
}
static int wpa_driver_broadcom_set_wpa(void *priv, int enable)
{
struct wpa_driver_broadcom_data *drv = priv;
unsigned int wauth, wsec;
struct ether_addr ea;
os_memset(&ea, enable ? 0xff : 0, sizeof(ea));
if (broadcom_ioctl(drv, WLC_GET_WPA_AUTH, &wauth, sizeof(wauth)) ==
-1 ||
broadcom_ioctl(drv, WLC_GET_WSEC, &wsec, sizeof(wsec)) == -1)
return -1;
if (enable) {
wauth = PSK_ENABLED;
wsec = TKIP_ENABLED;
} else {
wauth = 255;
wsec &= ~(TKIP_ENABLED | AES_ENABLED);
}
if (broadcom_ioctl(drv, WLC_SET_WPA_AUTH, &wauth, sizeof(wauth)) ==
-1 ||
broadcom_ioctl(drv, WLC_SET_WSEC, &wsec, sizeof(wsec)) == -1)
return -1;
/* FIX: magic number / error handling? */
broadcom_ioctl(drv, 122, &ea, sizeof(ea));
return 0;
}
static int wpa_driver_broadcom_set_key(void *priv, wpa_alg alg,
const u8 *addr, int key_idx, int set_tx,
const u8 *seq, size_t seq_len,
const u8 *key, size_t key_len)
{
struct wpa_driver_broadcom_data *drv = priv;
int ret;
wsec_key_t wkt;
os_memset(&wkt, 0, sizeof wkt);
wpa_printf(MSG_MSGDUMP, "BROADCOM: SET %sKEY[%d] alg=%d",
set_tx ? "PRIMARY " : "", key_idx, alg);
if (key && key_len > 0)
wpa_hexdump_key(MSG_MSGDUMP, "BROADCOM: key", key, key_len);
switch (alg) {
case WPA_ALG_NONE:
wkt.algo = CRYPTO_ALGO_OFF;
break;
case WPA_ALG_WEP:
wkt.algo = CRYPTO_ALGO_WEP128; /* CRYPTO_ALGO_WEP1? */
break;
case WPA_ALG_TKIP:
wkt.algo = 0; /* CRYPTO_ALGO_TKIP? */
break;
case WPA_ALG_CCMP:
wkt.algo = 0; /* CRYPTO_ALGO_AES_CCM;
* AES_OCB_MSDU, AES_OCB_MPDU? */
break;
default:
wkt.algo = CRYPTO_ALGO_NALG;
break;
}
if (seq && seq_len > 0)
wpa_hexdump(MSG_MSGDUMP, "BROADCOM: SEQ", seq, seq_len);
if (addr)
wpa_hexdump(MSG_MSGDUMP, "BROADCOM: addr", addr, ETH_ALEN);
wkt.index = key_idx;
wkt.len = key_len;
if (key && key_len > 0) {
os_memcpy(wkt.data, key, key_len);
if (key_len == 32) {
/* hack hack hack XXX */
os_memcpy(&wkt.data[16], &key[24], 8);
os_memcpy(&wkt.data[24], &key[16], 8);
}
}
/* wkt.algo = CRYPTO_ALGO_...; */
wkt.flags = set_tx ? 0 : WSEC_PRIMARY_KEY;
if (addr && set_tx)
os_memcpy(&wkt.ea, addr, sizeof(wkt.ea));
ret = broadcom_ioctl(drv, WLC_SET_KEY, &wkt, sizeof(wkt));
if (addr && set_tx) {
/* FIX: magic number / error handling? */
broadcom_ioctl(drv, 121, &wkt.ea, sizeof(wkt.ea));
}
return ret;
}
static void wpa_driver_broadcom_event_receive(int sock, void *ctx,
void *sock_ctx)
{
char buf[8192];
int left;
wl_wpa_header_t *wwh;
union wpa_event_data data;
if ((left = recv(sock, buf, sizeof buf, 0)) < 0)
return;
wpa_hexdump(MSG_DEBUG, "RECEIVE EVENT", buf, left);
if ((size_t) left < sizeof(wl_wpa_header_t))
return;
wwh = (wl_wpa_header_t *) buf;
if (wwh->snap.type != WL_WPA_ETHER_TYPE)
return;
if (os_memcmp(&wwh->snap, wl_wpa_snap_template, 6) != 0)
return;
os_memset(&data, 0, sizeof(data));
switch (wwh->type) {
case WLC_ASSOC_MSG:
left -= WL_WPA_HEADER_LEN;
wpa_printf(MSG_DEBUG, "BROADCOM: ASSOC MESSAGE (left: %d)",
left);
if (left > 0) {
data.assoc_info.resp_ies = os_malloc(left);
if (data.assoc_info.resp_ies == NULL)
return;
os_memcpy(data.assoc_info.resp_ies,
buf + WL_WPA_HEADER_LEN, left);
data.assoc_info.resp_ies_len = left;
wpa_hexdump(MSG_MSGDUMP, "BROADCOM: copying %d bytes "
"into resp_ies",
data.assoc_info.resp_ies, left);
}
/* data.assoc_info.req_ies = NULL; */
/* data.assoc_info.req_ies_len = 0; */
wpa_supplicant_event(ctx, EVENT_ASSOCINFO, &data);
wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
break;
case WLC_DISASSOC_MSG:
wpa_printf(MSG_DEBUG, "BROADCOM: DISASSOC MESSAGE");
wpa_supplicant_event(ctx, EVENT_DISASSOC, NULL);
break;
case WLC_PTK_MIC_MSG:
wpa_printf(MSG_DEBUG, "BROADCOM: PTK MIC MSG MESSAGE");
data.michael_mic_failure.unicast = 1;
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
break;
case WLC_GTK_MIC_MSG:
wpa_printf(MSG_DEBUG, "BROADCOM: GTK MIC MSG MESSAGE");
data.michael_mic_failure.unicast = 0;
wpa_supplicant_event(ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
break;
default:
wpa_printf(MSG_DEBUG, "BROADCOM: UNKNOWN MESSAGE (%d)",
wwh->type);
break;
}
os_free(data.assoc_info.resp_ies);
}
static void * wpa_driver_broadcom_init(void *ctx, const char *ifname)
{
int s;
struct sockaddr_ll ll;
struct wpa_driver_broadcom_data *drv;
struct ifreq ifr;
/* open socket to kernel */
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
perror("socket");
return NULL;
}
/* do it */
os_strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(s, SIOCGIFINDEX, &ifr) < 0) {
perror(ifr.ifr_name);
return NULL;
}
drv = os_zalloc(sizeof(*drv));
if (drv == NULL)
return NULL;
drv->ctx = ctx;
os_strncpy(drv->ifname, ifname, sizeof(drv->ifname));
drv->ioctl_sock = s;
s = socket(PF_PACKET, SOCK_RAW, ntohs(ETH_P_802_2));
if (s < 0) {
perror("socket(PF_PACKET, SOCK_RAW, ntohs(ETH_P_802_2))");
close(drv->ioctl_sock);
os_free(drv);
return NULL;
}
os_memset(&ll, 0, sizeof(ll));
ll.sll_family = AF_PACKET;
ll.sll_protocol = ntohs(ETH_P_802_2);
ll.sll_ifindex = ifr.ifr_ifindex;
ll.sll_hatype = 0;
ll.sll_pkttype = PACKET_HOST;
ll.sll_halen = 0;
if (bind(s, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
perror("bind(netlink)");
close(s);
close(drv->ioctl_sock);
os_free(drv);
return NULL;
}
eloop_register_read_sock(s, wpa_driver_broadcom_event_receive, ctx,
NULL);
drv->event_sock = s;
return drv;
}
static void wpa_driver_broadcom_deinit(void *priv)
{
struct wpa_driver_broadcom_data *drv = priv;
eloop_cancel_timeout(wpa_driver_broadcom_scan_timeout, drv, drv->ctx);
eloop_unregister_read_sock(drv->event_sock);
close(drv->event_sock);
close(drv->ioctl_sock);
os_free(drv);
}
static int wpa_driver_broadcom_set_countermeasures(void *priv,
int enabled)
{
#if 0
struct wpa_driver_broadcom_data *drv = priv;
/* FIX: ? */
return broadcom_ioctl(drv, WLC_SET_TKIP_COUNTERMEASURES, &enabled,
sizeof(enabled));
#else
return 0;
#endif
}
static int wpa_driver_broadcom_set_drop_unencrypted(void *priv, int enabled)
{
struct wpa_driver_broadcom_data *drv = priv;
/* SET_EAP_RESTRICT, SET_WEP_RESTRICT */
int restrict = (enabled ? 1 : 0);
if (broadcom_ioctl(drv, WLC_SET_WEP_RESTRICT,
&restrict, sizeof(restrict)) < 0 ||
broadcom_ioctl(drv, WLC_SET_EAP_RESTRICT,
&restrict, sizeof(restrict)) < 0)
return -1;
return 0;
}
static void wpa_driver_broadcom_scan_timeout(void *eloop_ctx,
void *timeout_ctx)
{
wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
}
static int wpa_driver_broadcom_scan(void *priv, const u8 *ssid,
size_t ssid_len)
{
struct wpa_driver_broadcom_data *drv = priv;
wlc_ssid_t wst = { 0, "" };
if (ssid && ssid_len > 0 && ssid_len <= sizeof(wst.SSID)) {
wst.SSID_len = ssid_len;
os_memcpy(wst.SSID, ssid, ssid_len);
}
if (broadcom_ioctl(drv, WLC_SCAN, &wst, sizeof(wst)) < 0)
return -1;
eloop_cancel_timeout(wpa_driver_broadcom_scan_timeout, drv, drv->ctx);
eloop_register_timeout(3, 0, wpa_driver_broadcom_scan_timeout, drv,
drv->ctx);
return 0;
}
static const int frequency_list[] = {
2412, 2417, 2422, 2427, 2432, 2437, 2442,
2447, 2452, 2457, 2462, 2467, 2472, 2484
};
struct bss_ie_hdr {
u8 elem_id;
u8 len;
u8 oui[3];
/* u8 oui_type; */
/* u16 version; */
} __attribute__ ((packed));
static int
wpa_driver_broadcom_get_scan_results(void *priv,
struct wpa_scan_result *results,
size_t max_size)
{
struct wpa_driver_broadcom_data *drv = priv;
char *buf;
wl_scan_results_t *wsr = (wl_scan_results_t *) buf;
wl_bss_info_t *wbi;
size_t ap_num;
buf = os_malloc(WLC_IOCTL_MAXLEN);
if (buf == NULL)
return -1;
wsr = (wl_scan_results_t *) buf;
wsr->buflen = WLC_IOCTL_MAXLEN - sizeof(wsr);
wsr->version = 107;
wsr->count = 0;
if (broadcom_ioctl(drv, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0) {
os_free(buf);
return -1;
}
os_memset(results, 0, max_size * sizeof(struct wpa_scan_result));
for (ap_num = 0, wbi = wsr->bss_info; ap_num < wsr->count; ++ap_num) {
int left;
struct bss_ie_hdr *ie;
os_memcpy(results[ap_num].bssid, &wbi->BSSID, ETH_ALEN);
os_memcpy(results[ap_num].ssid, wbi->SSID, wbi->SSID_len);
results[ap_num].ssid_len = wbi->SSID_len;
results[ap_num].freq = frequency_list[wbi->channel - 1];
/* get ie's */
wpa_hexdump(MSG_MSGDUMP, "BROADCOM: AP IEs",
(u8 *) wbi + sizeof(*wbi), wbi->ie_length);
ie = (struct bss_ie_hdr *) ((u8 *) wbi + sizeof(*wbi));
for (left = wbi->ie_length; left > 0;
left -= (ie->len + 2), ie = (struct bss_ie_hdr *)
((u8 *) ie + 2 + ie->len)) {
wpa_printf(MSG_MSGDUMP, "BROADCOM: IE: id:%x, len:%d",
ie->elem_id, ie->len);
if (ie->len >= 3)
wpa_printf(MSG_MSGDUMP,
"BROADCOM: oui:%02x%02x%02x",
ie->oui[0], ie->oui[1], ie->oui[2]);
if (ie->elem_id != 0xdd ||
ie->len < 6 ||
os_memcmp(ie->oui, WPA_OUI, 3) != 0)
continue;
os_memcpy(results[ap_num].wpa_ie, ie, ie->len + 2);
results[ap_num].wpa_ie_len = ie->len + 2;
break;
}
wbi = (wl_bss_info_t *) ((u8 *) wbi + wbi->length);
}
wpa_printf(MSG_MSGDUMP, "Received %d bytes of scan results (%lu "
"BSSes)",
wsr->buflen, (unsigned long) ap_num);
os_free(buf);
return ap_num;
}
static int wpa_driver_broadcom_deauthenticate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_broadcom_data *drv = priv;
wlc_deauth_t wdt;
wdt.val = reason_code;
os_memcpy(&wdt.ea, addr, sizeof wdt.ea);
wdt.res = 0x7fff;
return broadcom_ioctl(drv, WLC_DEAUTHENTICATE_WITH_REASON, &wdt,
sizeof(wdt));
}
static int wpa_driver_broadcom_disassociate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_broadcom_data *drv = priv;
return broadcom_ioctl(drv, WLC_DISASSOC, 0, 0);
}
static int
wpa_driver_broadcom_associate(void *priv,
struct wpa_driver_associate_params *params)
{
struct wpa_driver_broadcom_data *drv = priv;
wlc_ssid_t s;
int infra = 1;
int auth = 0;
int wsec = 4;
int dummy;
int wpa_auth;
s.SSID_len = params->ssid_len;
os_memcpy(s.SSID, params->ssid, params->ssid_len);
switch (params->pairwise_suite) {
case CIPHER_WEP40:
case CIPHER_WEP104:
wsec = 1;
break;
case CIPHER_TKIP:
wsec = 2;
break;
case CIPHER_CCMP:
wsec = 4;
break;
default:
wsec = 0;
break;
}
switch (params->key_mgmt_suite) {
case KEY_MGMT_802_1X:
wpa_auth = 1;
break;
case KEY_MGMT_PSK:
wpa_auth = 2;
break;
default:
wpa_auth = 255;
break;
}
/* printf("broadcom_associate: %u %u %u\n", pairwise_suite,
* group_suite, key_mgmt_suite);
* broadcom_ioctl(ifname, WLC_GET_WSEC, &wsec, sizeof(wsec));
* wl join uses wlc_sec_wep here, not wlc_set_wsec */
if (broadcom_ioctl(drv, WLC_SET_WSEC, &wsec, sizeof(wsec)) < 0 ||
broadcom_ioctl(drv, WLC_SET_WPA_AUTH, &wpa_auth,
sizeof(wpa_auth)) < 0 ||
broadcom_ioctl(drv, WLC_GET_WEP, &dummy, sizeof(dummy)) < 0 ||
broadcom_ioctl(drv, WLC_SET_INFRA, &infra, sizeof(infra)) < 0 ||
broadcom_ioctl(drv, WLC_SET_AUTH, &auth, sizeof(auth)) < 0 ||
broadcom_ioctl(drv, WLC_SET_WEP, &wsec, sizeof(wsec)) < 0 ||
broadcom_ioctl(drv, WLC_SET_SSID, &s, sizeof(s)) < 0)
return -1;
return 0;
}
const struct wpa_driver_ops wpa_driver_broadcom_ops = {
.name = "broadcom",
.desc = "Broadcom wl.o driver",
.get_bssid = wpa_driver_broadcom_get_bssid,
.get_ssid = wpa_driver_broadcom_get_ssid,
.set_wpa = wpa_driver_broadcom_set_wpa,
.set_key = wpa_driver_broadcom_set_key,
.init = wpa_driver_broadcom_init,
.deinit = wpa_driver_broadcom_deinit,
.set_countermeasures = wpa_driver_broadcom_set_countermeasures,
.set_drop_unencrypted = wpa_driver_broadcom_set_drop_unencrypted,
.scan = wpa_driver_broadcom_scan,
.get_scan_results = wpa_driver_broadcom_get_scan_results,
.deauthenticate = wpa_driver_broadcom_deauthenticate,
.disassociate = wpa_driver_broadcom_disassociate,
.associate = wpa_driver_broadcom_associate,
};
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