/*
- * WPA Supplicant - driver interaction with Linux nl80211/cfg80211
- * Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
+ * Driver interaction with Linux nl80211/cfg80211
+ * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2003-2004, Instant802 Networks, Inc.
+ * Copyright (c) 2005-2006, Devicescape Software, Inc.
+ * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (c) 2009, Atheros Communications
*
* 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
#include "eloop.h"
#include "ieee802_11_defs.h"
-#ifdef CONFIG_AP
-
+#if defined(CONFIG_AP) || defined(HOSTAPD)
#include <netpacket/packet.h>
#include <linux/filter.h>
#include "radiotap.h"
#include "radiotap_iter.h"
-#include "../hostapd/driver.h"
+#endif /* CONFIG_AP || HOSTAPD */
+
+#ifdef CONFIG_AP
+
#include "../hostapd/hostapd_defs.h"
#ifndef ETH_P_ALL
#endif /* CONFIG_AP */
+#ifdef HOSTAPD
+#include "../../hostapd/hostapd.h"
+#include "../../hostapd/sta_flags.h"
+#include "ieee802_11_common.h"
+
+#ifdef CONFIG_LIBNL20
+/* libnl 2.0 compatibility code */
+#define nl_handle_alloc_cb nl_socket_alloc_cb
+#define nl_handle_destroy nl_socket_free
+#endif /* CONFIG_LIBNL20 */
+
+#endif /* HOSTAPD */
+
+
#ifndef IFF_LOWER_UP
#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
#endif
#define IF_OPER_UP 6
#endif
+enum ieee80211_msg_type {
+ ieee80211_msg_normal = 0,
+ ieee80211_msg_tx_callback_ack = 1,
+ ieee80211_msg_tx_callback_fail = 2,
+};
+
+struct i802_bss {
+ struct i802_bss *next;
+ int ifindex;
+ unsigned int beacon_set:1;
+};
struct wpa_driver_nl80211_data {
void *ctx;
int link_event_sock;
- int ioctl_sock;
+ int ioctl_sock; /* socket for ioctl() use */
char ifname[IFNAMSIZ + 1];
int ifindex;
int if_removed;
int monitor_sock;
int monitor_ifidx;
#endif /* CONFIG_AP */
+
+#ifdef HOSTAPD
+ struct hostapd_data *hapd;
+
+ int eapol_sock; /* socket for EAPOL frames */
+ int monitor_sock; /* socket for monitor */
+ int monitor_ifidx;
+
+ int default_if_indices[16];
+ int *if_indices;
+ int num_if_indices;
+
+ int beacon_int;
+ struct i802_bss bss;
+ unsigned int ht_40mhz_scan:1;
+
+ int last_freq;
+ int last_freq_ht;
+ struct hostapd_neighbor_bss *neighbors;
+ size_t num_neighbors;
+#endif /* HOSTAPD */
};
int ifidx);
#endif /* CONFIG_AP */
+#ifdef HOSTAPD
+static void handle_frame(struct wpa_driver_nl80211_data *drv,
+ u8 *buf, size_t len,
+ struct hostapd_frame_info *hfi,
+ enum ieee80211_msg_type msg_type);
+static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
+static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
+static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
+ int ifindex);
+#endif /* HOSTAPD */
+
/* nl80211 code */
static int ack_handler(struct nl_msg *msg, void *arg)
return NL_SKIP;
}
+
+static int no_seq_check(struct nl_msg *msg, void *arg)
+{
+ return NL_OK;
+}
+
+
static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
struct nl_msg *msg,
int (*valid_handler)(struct nl_msg *, void *),
}
+#ifndef HOSTAPD
static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
void *ctx, char *buf, size_t len,
int del)
}
-static int no_seq_check(struct nl_msg *msg, void *arg)
-{
- return NL_OK;
-}
-
-
static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
const u8 *frame, size_t len)
{
}
}
+#endif /* HOSTAPD */
+
+
+static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
+ struct nlattr *tb[])
+{
+#ifdef HOSTAPD
+ if (tb[NL80211_ATTR_MAC])
+ hostapd_michael_mic_failure(drv->hapd,
+ nla_data(tb[NL80211_ATTR_MAC]));
+#else /* HOSTAPD */
+ union wpa_event_data data;
+
+ wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
+ os_memset(&data, 0, sizeof(data));
+ if (tb[NL80211_ATTR_MAC]) {
+ wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
+ nla_data(tb[NL80211_ATTR_MAC]),
+ nla_len(tb[NL80211_ATTR_MAC]));
+ }
+ if (tb[NL80211_ATTR_KEY_SEQ]) {
+ wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
+ nla_data(tb[NL80211_ATTR_KEY_SEQ]),
+ nla_len(tb[NL80211_ATTR_KEY_SEQ]));
+ }
+ if (tb[NL80211_ATTR_KEY_TYPE]) {
+ enum nl80211_key_type key_type =
+ nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
+ wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
+ if (key_type == NL80211_KEYTYPE_PAIRWISE)
+ data.michael_mic_failure.unicast = 1;
+ } else
+ data.michael_mic_failure.unicast = 1;
+
+ if (tb[NL80211_ATTR_KEY_IDX]) {
+ u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
+ wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
+ }
+
+ wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
+#endif /* HOSTAPD */
+}
+
static int process_event(struct nl_msg *msg, void *arg)
{
}
switch (gnlh->cmd) {
+#ifndef HOSTAPD
case NL80211_CMD_NEW_SCAN_RESULTS:
wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
drv->scan_complete_events = 1;
case NL80211_CMD_DISASSOCIATE:
mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]);
break;
+#endif /* HOSTAPD */
+ case NL80211_CMD_MICHAEL_MIC_FAILURE:
+ mlme_event_michael_mic_failure(drv, tb);
+ break;
default:
wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", gnlh->cmd);
}
-static int wpa_driver_nl80211_get_ifflags_ifname(struct wpa_driver_nl80211_data *drv,
- const char *ifname, int *flags)
+static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
+ const char *ifname, int dev_up)
{
struct ifreq ifr;
+ if (drv->ioctl_sock < 0)
+ return -1;
+
os_memset(&ifr, 0, sizeof(ifr));
os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
- if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
+
+ if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
perror("ioctl[SIOCGIFFLAGS]");
+ wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
+ ifname);
return -1;
}
- *flags = ifr.ifr_flags & 0xffff;
- return 0;
-}
-
-
-/**
- * wpa_driver_nl80211_get_ifflags - Get interface flags (SIOCGIFFLAGS)
- * @drv: driver_nl80211 private data
- * @flags: Pointer to returned flags value
- * Returns: 0 on success, -1 on failure
- */
-static int wpa_driver_nl80211_get_ifflags(struct wpa_driver_nl80211_data *drv,
- int *flags)
-{
- return wpa_driver_nl80211_get_ifflags_ifname(drv, drv->ifname, flags);
-}
+ if (dev_up) {
+ if (ifr.ifr_flags & IFF_UP)
+ return 0;
+ ifr.ifr_flags |= IFF_UP;
+ } else {
+ if (!(ifr.ifr_flags & IFF_UP))
+ return 0;
+ ifr.ifr_flags &= ~IFF_UP;
+ }
-static int wpa_driver_nl80211_set_ifflags_ifname(
- struct wpa_driver_nl80211_data *drv,
- const char *ifname, int flags)
-{
- struct ifreq ifr;
-
- os_memset(&ifr, 0, sizeof(ifr));
- os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
- ifr.ifr_flags = flags & 0xffff;
- if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
- perror("SIOCSIFFLAGS");
+ if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
+ perror("ioctl[SIOCSIFFLAGS]");
return -1;
}
- return 0;
-}
-
-/**
- * wpa_driver_nl80211_set_ifflags - Set interface flags (SIOCSIFFLAGS)
- * @drv: driver_nl80211 private data
- * @flags: New value for flags
- * Returns: 0 on success, -1 on failure
- */
-static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv,
- int flags)
-{
- return wpa_driver_nl80211_set_ifflags_ifname(drv, drv->ifname, flags);
+ return 0;
}
msg = nlmsg_alloc();
if (!msg)
- goto nla_put_failure;
+ return -ENOMEM;
alpha2[0] = alpha2_arg[0];
alpha2[1] = alpha2_arg[1];
goto err6;
}
+#ifndef HOSTAPD
eloop_register_read_sock(s, wpa_driver_nl80211_event_receive_link, drv,
ctx);
+#endif /* HOSTAPD */
drv->link_event_sock = s;
if (wpa_driver_nl80211_finish_drv_init(drv))
static int
wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
{
- int flags;
-
drv->ifindex = if_nametoindex(drv->ifname);
if (wpa_driver_nl80211_set_mode(drv, 0) < 0) {
"use managed mode");
}
- if (wpa_driver_nl80211_get_ifflags(drv, &flags) != 0) {
- wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
- drv->ifname);
+ if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
+ wpa_printf(MSG_ERROR, "Could not set interface '%s' "
+ "UP", drv->ifname);
return -1;
}
- if (!(flags & IFF_UP)) {
- if (wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP) != 0) {
- wpa_printf(MSG_ERROR, "Could not set interface '%s' "
- "UP", drv->ifname);
- return -1;
- }
- }
wpa_driver_nl80211_capa(drv);
static void wpa_driver_nl80211_deinit(void *priv)
{
struct wpa_driver_nl80211_data *drv = priv;
- int flags;
#ifdef CONFIG_AP
if (drv->monitor_ifidx >= 0)
eloop_unregister_read_sock(drv->link_event_sock);
- if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0)
- (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
+ hostapd_set_iface_flags(drv, drv->ifname, 0);
wpa_driver_nl80211_set_mode(drv, 0);
close(drv->link_event_sock);
static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
{
wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
+#ifndef HOSTAPD
wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
+#endif /* HOSTAPD */
}
}
-static int wpa_driver_nl80211_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)
+static int nl_set_encr(int ifindex, struct wpa_driver_nl80211_data *drv,
+ 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_nl80211_data *drv = priv;
- int err;
struct nl_msg *msg;
+ int ret;
- wpa_printf(MSG_DEBUG, "%s: alg=%d addr=%p key_idx=%d set_tx=%d "
- "seq_len=%lu key_len=%lu",
- __func__, alg, addr, key_idx, set_tx,
+ wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
+ "set_tx=%d seq_len=%lu key_len=%lu",
+ __func__, ifindex, alg, addr, key_idx, set_tx,
(unsigned long) seq_len, (unsigned long) key_len);
msg = nlmsg_alloc();
- if (msg == NULL)
- return -1;
+ if (!msg)
+ return -ENOMEM;
if (alg == WPA_ALG_NONE) {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
- NL80211_CMD_DEL_KEY, 0);
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_KEY, 0);
} else {
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
- NL80211_CMD_NEW_KEY, 0);
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_KEY, 0);
NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
switch (alg) {
case WPA_ALG_WEP:
case WPA_ALG_CCMP:
NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
break;
-#ifdef CONFIG_IEEE80211W
case WPA_ALG_IGTK:
NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC06);
break;
-#endif /* CONFIG_IEEE80211W */
default:
+ wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
+ "algorithm %d", __func__, alg);
nlmsg_free(msg);
return -1;
}
}
+ if (seq)
+ NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
+
if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, " addr=" MACSTR, MAC2STR(addr));
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
}
NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
- err = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (err) {
- wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d", err);
- return -1;
- }
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == -ENOENT && alg == WPA_ALG_NONE)
+ ret = 0;
+ if (ret)
+ wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
+ ret, strerror(-ret));
- if (set_tx && alg != WPA_ALG_NONE) {
- msg = nlmsg_alloc();
- if (msg == NULL)
- return -1;
+ /*
+ * If we failed or don't need to set the default TX key (below),
+ * we're done here.
+ */
+ if (ret || !set_tx || alg == WPA_ALG_NONE)
+ return ret;
+#ifdef HOSTAPD /* FIX: is this needed? */
+ if (addr)
+ return ret;
+#endif /* HOSTAPD */
- genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
- 0, NL80211_CMD_SET_KEY, 0);
- NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
- NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
- err = send_and_recv_msgs(drv, msg, NULL, NULL);
- if (err) {
- wpa_printf(MSG_DEBUG, "nl80211: set default key "
- "failed; err=%d", err);
- return -1;
- }
- }
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_KEY, 0);
+ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
+ if (alg == WPA_ALG_IGTK)
+ NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
+ else
+ NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
- return 0;
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == -ENOENT)
+ ret = 0;
+ if (ret)
+ wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
+ "err=%d %s)", ret, strerror(-ret));
+ return ret;
nla_put_failure:
return -ENOBUFS;
}
+static int wpa_driver_nl80211_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_nl80211_data *drv = priv;
+ return nl_set_encr(drv->ifindex, drv, alg, addr, key_idx, set_tx, seq,
+ seq_len, key, key_len);
+}
+
+
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code)
{
void *priv, struct wpa_driver_auth_params *params)
{
struct wpa_driver_nl80211_data *drv = priv;
- int ret = -1;
+ int ret = -1, i;
struct nl_msg *msg;
enum nl80211_auth_type type;
wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
drv->ifindex);
+
+ for (i = 0; i < 4; i++) {
+ if (!params->wep_key[i])
+ continue;
+ wpa_driver_nl80211_set_key(drv, WPA_ALG_WEP, NULL, i,
+ i == params->wep_tx_keyidx, NULL, 0,
+ params->wep_key[i],
+ params->wep_key_len[i]);
+ }
+
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
NL80211_CMD_AUTHENTICATE, 0);
}
-#ifdef CONFIG_AP
+#if defined(CONFIG_AP) || defined(HOSTAPD)
struct phy_info_arg {
u16 *num_modes;
/* crude heuristic */
if (mode->channels[idx].freq < 4000)
- if (mode->channels[idx].freq == 2848)
+ if (mode->channels[idx].freq == 2484)
mode->channels[idx].chan = 14;
else
mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
}
-static int wpa_driver_nl80211_set_beacon(void *priv,
- const u8 *head, size_t head_len,
- const u8 *tail, size_t tail_len,
- int dtim_period)
+static int wpa_driver_nl80211_set_beacon_iface(int ifindex, void *priv,
+ const u8 *head, size_t head_len,
+ const u8 *tail, size_t tail_len,
+ int dtim_period)
{
struct wpa_driver_nl80211_data *drv = priv;
struct nl_msg *msg;
u8 cmd = NL80211_CMD_NEW_BEACON;
int ret;
+ int beacon_set;
+#ifdef HOSTAPD
+ struct i802_bss *bss;
+
+ bss = get_bss(drv, ifindex);
+ if (bss == NULL)
+ return -ENOENT;
+ beacon_set = bss->beacon_set;
+#else /* HOSTAPD */
+ beacon_set = drv->beacon_set;
+#endif /* HOSTAPD */
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
- drv->beacon_set);
- if (drv->beacon_set)
+ beacon_set);
+ if (beacon_set)
cmd = NL80211_CMD_SET_BEACON;
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
0, cmd, 0);
NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
- NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
if (!drv->beacon_int)
drv->beacon_int = 100;
NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
ret, strerror(-ret));
- } else
+ } else {
+#ifdef HOSTAPD
+ bss->beacon_set = 1;
+#else /* HOSTAPD */
drv->beacon_set = 1;
+#endif /* HOSTAPD */
+ }
return ret;
nla_put_failure:
return -ENOBUFS;
drv->beacon_int = value;
+#ifdef HOSTAPD
+ if (!drv->bss.beacon_set)
+ return 0;
+#else /* HOSTAPD */
if (!drv->beacon_set)
return 0;
+#endif /* HOSTAPD */
msg = nlmsg_alloc();
if (!msg)
return -ENOMEM;
- wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d "
- "(beacon_set=%d)", value, drv->beacon_set);
+ wpa_printf(MSG_DEBUG, "nl80211: Set beacon interval %d", value);
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
0, NL80211_CMD_SET_BEACON, 0);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
return -ENOBUFS;
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+
+#ifdef CONFIG_AP
+
+static int wpa_driver_nl80211_set_beacon(void *priv,
+ const u8 *head, size_t head_len,
+ const u8 *tail, size_t tail_len,
+ int dtim_period)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ return wpa_driver_nl80211_set_beacon_iface(drv->ifindex, priv,
+ head, head_len,
+ tail, tail_len,
+ dtim_period);
+}
+
static int wpa_driver_nl80211_set_freq2(
struct wpa_driver_nl80211_data *drv,
return -1;
}
+#endif /* CONFIG_AP */
+
+#if defined(CONFIG_AP) || defined(HOSTAPD)
static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
int ifidx)
{
struct nl_msg *msg;
+#ifdef HOSTAPD
+ /* stop listening for EAPOL on this interface */
+ del_ifidx(drv, ifidx);
+#endif /* HOSTAPD */
+
msg = nlmsg_alloc();
if (!msg)
goto nla_put_failure;
static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
- const char *ifname, enum nl80211_iftype iftype)
+ const char *ifname, enum nl80211_iftype iftype,
+ const u8 *addr)
{
struct nl_msg *msg, *flags = NULL;
int ifidx;
int ret = -ENOBUFS;
+#ifdef HOSTAPD
+ struct ifreq ifreq;
+ struct iwreq iwr;
+#endif /* HOSTAPD */
msg = nlmsg_alloc();
if (!msg)
if (ifidx <= 0)
return -1;
+#ifdef HOSTAPD
+ /* start listening for EAPOL on this interface */
+ add_ifidx(drv, ifidx);
+
+ if (addr) {
+ switch (iftype) {
+ case NL80211_IFTYPE_AP:
+ os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
+ memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
+ ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
+ nl80211_remove_iface(drv, ifidx);
+ return -1;
+ }
+ break;
+ case NL80211_IFTYPE_WDS:
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
+ iwr.u.addr.sa_family = ARPHRD_ETHER;
+ memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
+ if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
+ return -1;
+ break;
+ default:
+ /* nothing */
+ break;
+ }
+ }
+#endif /* HOSTAPD */
+
return ifidx;
}
+#endif /* CONFIG_AP || HOSTAPD */
-enum ieee80211_msg_type {
- ieee80211_msg_normal = 0,
- ieee80211_msg_tx_callback_ack = 1,
- ieee80211_msg_tx_callback_fail = 2,
-};
-
+#ifdef CONFIG_AP
void ap_tx_status(void *ctx, const u8 *addr,
const u8 *buf, size_t len, int ack);
struct hostapd_frame_info *fi);
void ap_mgmt_tx_cb(void *ctx, u8 *buf, size_t len, u16 stype, int ok);
+#endif /* CONFIG_AP */
+
+#if defined(CONFIG_AP) || defined(HOSTAPD)
static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
{
case WLAN_FC_TYPE_MGMT:
wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
ok ? "ACK" : "fail");
+#ifdef HOSTAPD
+ hostapd_mgmt_tx_cb(ctx, buf, len, stype, ok);
+#else /* HOSTAPD */
ap_mgmt_tx_cb(ctx, buf, len, stype, ok);
+#endif /* HOSTAPD */
break;
case WLAN_FC_TYPE_CTRL:
wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
ok ? "ACK" : "fail");
break;
case WLAN_FC_TYPE_DATA:
+#ifdef HOSTAPD
+ hostapd_tx_status(ctx, hdr->addr1, buf, len, ok);
+#else /* HOSTAPD */
ap_tx_status(ctx, hdr->addr1, buf, len, ok);
+#endif /* HOSTAPD */
break;
default:
wpa_printf(MSG_DEBUG, "unknown TX callback frame type %d",
}
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+#ifdef CONFIG_AP
static void handle_frame(struct wpa_driver_nl80211_data *drv,
u8 *buf, size_t len,
}
}
+#endif /* CONFIG_AP */
+
+#if defined(CONFIG_AP) || defined(HOSTAPD)
static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
{
struct sockaddr_ll ll;
int optval;
socklen_t optlen;
- int flags;
snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
buf[IFNAMSIZ - 1] = '\0';
drv->monitor_ifidx =
- nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR);
+ nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
if (drv->monitor_ifidx < 0)
return -1;
- if (wpa_driver_nl80211_get_ifflags_ifname(drv, buf, &flags) != 0) {
- wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
- buf);
+ if (hostapd_set_iface_flags(drv, buf, 1))
goto error;
- }
- if (!(flags & IFF_UP)) {
- if (wpa_driver_nl80211_set_ifflags_ifname(drv, buf,
- flags | IFF_UP) != 0)
- {
- wpa_printf(MSG_ERROR, "Could not set interface '%s' "
- "UP", buf);
- goto error;
- }
- }
memset(&ll, 0, sizeof(ll));
ll.sll_family = AF_PACKET;
/* This works, but will cost in performance. */
}
- if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
- sizeof(ll)) < 0) {
+ if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
perror("monitor socket bind");
goto error;
}
return -1;
}
+#endif /* CONFIG_AP || HOSTAPD */
+
+#ifdef CONFIG_AP
static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
struct wpa_driver_associate_params *params)
static int wpa_driver_nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
int mode)
{
- int ret = -1, flags;
+ int ret = -1;
struct nl_msg *msg;
int nlmode;
* take the device down, try to set the mode again, and bring the
* device back up.
*/
- if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) {
- (void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
-
+ if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
/* Try to set the mode again while the interface is down */
msg = nlmsg_alloc();
if (!msg)
drv->ifname, ret, strerror(-ret));
}
- /* Ignore return value of get_ifflags to ensure that the device
- * is always up like it was before this function was called.
- */
- (void) wpa_driver_nl80211_get_ifflags(drv, &flags);
- (void) wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP);
+ if (hostapd_set_iface_flags(drv, drv->ifname, 1))
+ ret = -1;
}
return ret;
}
-const struct wpa_driver_ops wpa_driver_nl80211_ops = {
- .name = "nl80211",
- .desc = "Linux nl80211/cfg80211",
- .get_bssid = wpa_driver_nl80211_get_bssid,
- .get_ssid = wpa_driver_nl80211_get_ssid,
- .set_key = wpa_driver_nl80211_set_key,
- .scan2 = wpa_driver_nl80211_scan,
- .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
- .deauthenticate = wpa_driver_nl80211_deauthenticate,
- .disassociate = wpa_driver_nl80211_disassociate,
- .authenticate = wpa_driver_nl80211_authenticate,
- .associate = wpa_driver_nl80211_associate,
- .init = wpa_driver_nl80211_init,
- .deinit = wpa_driver_nl80211_deinit,
- .get_capa = wpa_driver_nl80211_get_capa,
- .set_operstate = wpa_driver_nl80211_set_operstate,
- .set_country = wpa_driver_nl80211_set_country,
-#ifdef CONFIG_AP
- .set_beacon = wpa_driver_nl80211_set_beacon,
- .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
- .send_mlme = wpa_driver_nl80211_send_mlme,
- .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
-#endif /* CONFIG_AP */
+#ifdef HOSTAPD
+
+static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+
+static int i802_sta_deauth(void *priv, const u8 *addr, int reason);
+static int i802_sta_disassoc(void *priv, const u8 *addr, int reason);
+
+
+static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
+ int ifindex)
+{
+ struct i802_bss *bss = &drv->bss;
+ while (bss) {
+ if (ifindex == bss->ifindex)
+ return bss;
+ bss = bss->next;
+ }
+ wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
+ return NULL;
+}
+
+
+static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
+{
+ int i;
+ int *old;
+
+ wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
+ ifidx);
+ for (i = 0; i < drv->num_if_indices; i++) {
+ if (drv->if_indices[i] == 0) {
+ drv->if_indices[i] = ifidx;
+ return;
+ }
+ }
+
+ if (drv->if_indices != drv->default_if_indices)
+ old = drv->if_indices;
+ else
+ old = NULL;
+
+ drv->if_indices = realloc(old,
+ sizeof(int) * (drv->num_if_indices + 1));
+ if (!drv->if_indices) {
+ if (!old)
+ drv->if_indices = drv->default_if_indices;
+ else
+ drv->if_indices = old;
+ wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
+ "interfaces");
+ wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
+ return;
+ }
+ drv->if_indices[drv->num_if_indices] = ifidx;
+ drv->num_if_indices++;
+}
+
+
+static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
+{
+ int i;
+
+ for (i = 0; i < drv->num_if_indices; i++) {
+ if (drv->if_indices[i] == ifidx) {
+ drv->if_indices[i] = 0;
+ break;
+ }
+ }
+}
+
+
+static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
+{
+ int i;
+
+ for (i = 0; i < drv->num_if_indices; i++)
+ if (drv->if_indices[i] == ifidx)
+ return 1;
+
+ return 0;
+}
+
+
+static int i802_set_key(const char *iface, 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_nl80211_data *drv = priv;
+ return nl_set_encr(if_nametoindex(iface), drv, alg, addr, key_idx,
+ set_tx, seq, seq_len, key, key_len);
+}
+
+
+static inline int min_int(int a, int b)
+{
+ if (a < b)
+ return a;
+ return b;
+}
+
+
+static int get_key_handler(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *tb[NL80211_ATTR_MAX + 1];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+
+ nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ /*
+ * TODO: validate the key index and mac address!
+ * Otherwise, there's a race condition as soon as
+ * the kernel starts sending key notifications.
+ */
+
+ if (tb[NL80211_ATTR_KEY_SEQ])
+ memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
+ min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
+ return NL_SKIP;
+}
+
+
+static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
+ int idx, u8 *seq)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_GET_KEY, 0);
+
+ if (addr)
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
+
+ memset(seq, 0, 6);
+
+ return send_and_recv_msgs(drv, msg, get_key_handler, seq);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
+ int mode)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+ u8 rates[NL80211_MAX_SUPP_RATES];
+ u8 rates_len = 0;
+ int i;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
+ NL80211_CMD_SET_BSS, 0);
+
+ for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
+ rates[rates_len++] = basic_rates[i] / 5;
+
+ NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
+
+ /* TODO: multi-BSS support */
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+/* Set kernel driver on given frequency (MHz) */
+static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ drv->last_freq = freq->freq;
+ drv->last_freq_ht = freq->ht_enabled;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
+ NL80211_CMD_SET_WIPHY, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq->freq);
+ if (freq->ht_enabled) {
+ switch (freq->sec_channel_offset) {
+ case -1:
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+ NL80211_CHAN_HT40MINUS);
+ break;
+ case 1:
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+ NL80211_CHAN_HT40PLUS);
+ break;
+ default:
+ NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
+ NL80211_CHAN_HT20);
+ break;
+ }
+ }
+
+ if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
+ return 0;
+ nla_put_failure:
+ return -1;
+}
+
+
+static int i802_set_rts(void *priv, int rts)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+ iwr.u.rts.value = rts;
+ iwr.u.rts.fixed = 1;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRTS]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_set_frag(void *priv, int frag)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+ iwr.u.frag.value = frag;
+ iwr.u.frag.fixed = 1;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
+ perror("ioctl[SIOCSIWFRAG]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_set_retry(void *priv, int short_retry, int long_retry)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct iwreq iwr;
+
+ memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+
+ iwr.u.retry.value = short_retry;
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
+ if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRETRY(short)]");
+ return -1;
+ }
+
+ iwr.u.retry.value = long_retry;
+ iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
+ if (ioctl(drv->ioctl_sock, SIOCSIWRETRY, &iwr) < 0) {
+ perror("ioctl[SIOCSIWRETRY(long)]");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int i802_flush(void *priv)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_STATION, 0);
+
+ /*
+ * XXX: FIX! this needs to flush all VLANs too
+ */
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->ifname));
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int get_sta_handler(struct nl_msg *msg, void *arg)
+{
+ struct nlattr *tb[NL80211_ATTR_MAX + 1];
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ struct hostap_sta_driver_data *data = arg;
+ struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
+ static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
+ [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
+ [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
+ [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
+ [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
+ [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
+ };
+
+ nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), NULL);
+
+ /*
+ * TODO: validate the interface and mac address!
+ * Otherwise, there's a race condition as soon as
+ * the kernel starts sending station notifications.
+ */
+
+ if (!tb[NL80211_ATTR_STA_INFO]) {
+ wpa_printf(MSG_DEBUG, "sta stats missing!");
+ return NL_SKIP;
+ }
+ if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
+ tb[NL80211_ATTR_STA_INFO],
+ stats_policy)) {
+ wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
+ return NL_SKIP;
+ }
+
+ if (stats[NL80211_STA_INFO_INACTIVE_TIME])
+ data->inactive_msec =
+ nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
+ if (stats[NL80211_STA_INFO_RX_BYTES])
+ data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
+ if (stats[NL80211_STA_INFO_TX_BYTES])
+ data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
+ if (stats[NL80211_STA_INFO_RX_PACKETS])
+ data->rx_packets =
+ nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
+ if (stats[NL80211_STA_INFO_TX_PACKETS])
+ data->tx_packets =
+ nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
+
+ return NL_SKIP;
+}
+
+static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
+ const u8 *addr)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ os_memset(data, 0, sizeof(*data));
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_GET_STATION, 0);
+
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+
+ return send_and_recv_msgs(drv, msg, get_sta_handler, data);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
+ size_t data_len, int encrypt, const u8 *own_addr)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct ieee80211_hdr *hdr;
+ size_t len;
+ u8 *pos;
+ int res;
+#if 0 /* FIX */
+ int qos = sta->flags & WLAN_STA_WME;
+#else
+ int qos = 0;
+#endif
+
+ len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
+ data_len;
+ hdr = os_zalloc(len);
+ if (hdr == NULL) {
+ printf("malloc() failed for i802_send_data(len=%lu)\n",
+ (unsigned long) len);
+ return -1;
+ }
+
+ hdr->frame_control =
+ IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
+ hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
+ if (encrypt)
+ hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
+#if 0 /* To be enabled if qos determination is added above */
+ if (qos) {
+ hdr->frame_control |=
+ host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
+ }
+#endif
+
+ memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
+ memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
+ pos = (u8 *) (hdr + 1);
+
+#if 0 /* To be enabled if qos determination is added above */
+ if (qos) {
+ /* add an empty QoS header if needed */
+ pos[0] = 0;
+ pos[1] = 0;
+ pos += 2;
+ }
+#endif
+
+ memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
+ pos += sizeof(rfc1042_header);
+ WPA_PUT_BE16(pos, ETH_P_PAE);
+ pos += 2;
+ memcpy(pos, data, data_len);
+
+ res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
+ if (res < 0) {
+ wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
+ "failed: %d (%s)",
+ (unsigned long) len, errno, strerror(errno));
+ }
+ free(hdr);
+
+ return res;
+}
+
+
+static int i802_sta_add(const char *ifname, void *priv,
+ struct hostapd_sta_add_params *params)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+ int ret = -ENOBUFS;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_NEW_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->ifname));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
+ NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
+ NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
+ params->supp_rates);
+ NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
+ params->listen_interval);
+
+#ifdef CONFIG_IEEE80211N
+ if (params->ht_capabilities) {
+ NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
+ params->ht_capabilities->length,
+ ¶ms->ht_capabilities->data);
+ }
+#endif /* CONFIG_IEEE80211N */
+
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret)
+ wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
+ "result: %d (%s)", ret, strerror(-ret));
+ if (ret == -EEXIST)
+ ret = 0;
+ nla_put_failure:
+ return ret;
+}
+
+
+static int i802_sta_remove(void *priv, const u8 *addr)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+ int ret;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->ifname));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (ret == -ENOENT)
+ return 0;
+ return ret;
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int i802_sta_set_flags(void *priv, const u8 *addr,
+ int total_flags, int flags_or, int flags_and)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg, *flags = NULL;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ flags = nlmsg_alloc();
+ if (!flags) {
+ nlmsg_free(msg);
+ return -ENOMEM;
+ }
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->ifname));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+
+ if (total_flags & WLAN_STA_AUTHORIZED)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
+
+ if (total_flags & WLAN_STA_WMM)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
+
+ if (total_flags & WLAN_STA_SHORT_PREAMBLE)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
+
+ if (total_flags & WLAN_STA_MFP)
+ NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
+
+ if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
+ goto nla_put_failure;
+
+ nlmsg_free(flags);
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ nlmsg_free(flags);
+ return -ENOBUFS;
+}
+
+
+static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
+ int cw_min, int cw_max, int burst_time)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+ struct nlattr *txq, *params;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -1;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_WIPHY, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+
+ txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
+ if (!txq)
+ goto nla_put_failure;
+
+ /* We are only sending parameters for a single TXQ at a time */
+ params = nla_nest_start(msg, 1);
+ if (!params)
+ goto nla_put_failure;
+
+ NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
+ /* Burst time is configured in units of 0.1 msec and TXOP parameter in
+ * 32 usec, so need to convert the value here. */
+ NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
+ NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
+ NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
+ NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
+
+ nla_nest_end(msg, params);
+
+ nla_nest_end(msg, txq);
+
+ if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
+ return 0;
+ nla_put_failure:
+ return -1;
+}
+
+
+static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ int ifidx;
+ struct i802_bss *bss;
+
+ bss = os_zalloc(sizeof(*bss));
+ if (bss == NULL)
+ return -1;
+ bss->ifindex = if_nametoindex(ifname);
+
+ ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
+ if (ifidx < 0) {
+ os_free(bss);
+ return -1;
+ }
+ if (hostapd_set_iface_flags(priv, ifname, 1)) {
+ nl80211_remove_iface(priv, ifidx);
+ os_free(bss);
+ return -1;
+ }
+ bss->next = drv->bss.next;
+ drv->bss.next = bss;
+ return 0;
+}
+
+
+static int i802_bss_remove(void *priv, const char *ifname)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct i802_bss *bss, *prev;
+ int ifindex = if_nametoindex(ifname);
+ nl80211_remove_iface(priv, ifindex);
+ prev = &drv->bss;
+ bss = drv->bss.next;
+ while (bss) {
+ if (ifindex == bss->ifindex) {
+ prev->next = bss->next;
+ os_free(bss);
+ break;
+ }
+ prev = bss;
+ bss = bss->next;
+ }
+ return 0;
+}
+
+
+static int i802_set_beacon(const char *iface, void *priv,
+ const u8 *head, size_t head_len,
+ const u8 *tail, size_t tail_len, int dtim_period)
+{
+ return wpa_driver_nl80211_set_beacon_iface(if_nametoindex(iface), priv,
+ head, head_len,
+ tail, tail_len,
+ dtim_period);
+}
+
+
+static int i802_del_beacon(struct wpa_driver_nl80211_data *drv)
+{
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_DEL_BEACON, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int i802_set_bss(void *priv, int cts, int preamble, int slot)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
+ NL80211_CMD_SET_BSS, 0);
+
+ if (cts >= 0)
+ NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
+ if (preamble >= 0)
+ NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
+ if (slot >= 0)
+ NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
+
+ /* TODO: multi-BSS support */
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static int i802_set_cts_protect(void *priv, int value)
+{
+ return i802_set_bss(priv, value, -1, -1);
+}
+
+
+static int i802_set_preamble(void *priv, int value)
+{
+ return i802_set_bss(priv, -1, value, -1);
+}
+
+
+static int i802_set_short_slot_time(void *priv, int value)
+{
+ return i802_set_bss(priv, -1, -1, value);
+}
+
+
+static enum nl80211_iftype i802_if_type(enum hostapd_driver_if_type type)
+{
+ switch (type) {
+ case HOSTAPD_IF_VLAN:
+ return NL80211_IFTYPE_AP_VLAN;
+ case HOSTAPD_IF_WDS:
+ return NL80211_IFTYPE_WDS;
+ }
+ return -1;
+}
+
+
+static int i802_if_add(const char *iface, void *priv,
+ enum hostapd_driver_if_type type, char *ifname,
+ const u8 *addr)
+{
+ if (nl80211_create_iface(priv, ifname, i802_if_type(type), addr) < 0)
+ return -1;
+ return 0;
+}
+
+
+static int i802_if_update(void *priv, enum hostapd_driver_if_type type,
+ char *ifname, const u8 *addr)
+{
+ /* unused at the moment */
+ return -1;
+}
+
+
+static int i802_if_remove(void *priv, enum hostapd_driver_if_type type,
+ const char *ifname, const u8 *addr)
+{
+ nl80211_remove_iface(priv, if_nametoindex(ifname));
+ return 0;
+}
+
+
+static int i802_set_sta_vlan(void *priv, const u8 *addr,
+ const char *ifname, int vlan_id)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_STATION, 0);
+
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(drv->ifname));
+ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(ifname));
+
+ return send_and_recv_msgs(drv, msg, NULL, NULL);
+ nla_put_failure:
+ return -ENOBUFS;
+}
+
+
+static void handle_frame(struct wpa_driver_nl80211_data *drv,
+ u8 *buf, size_t len,
+ struct hostapd_frame_info *hfi,
+ enum ieee80211_msg_type msg_type)
+{
+ struct hostapd_iface *iface = drv->hapd->iface;
+ struct ieee80211_hdr *hdr;
+ u16 fc, type, stype;
+ size_t data_len = len;
+ struct hostapd_data *hapd = NULL;
+ int broadcast_bssid = 0;
+ size_t i;
+ u8 *bssid;
+
+ /*
+ * PS-Poll frames are 16 bytes. All other frames are
+ * 24 bytes or longer.
+ */
+ if (len < 16)
+ return;
+
+ hdr = (struct ieee80211_hdr *) buf;
+ fc = le_to_host16(hdr->frame_control);
+
+ type = WLAN_FC_GET_TYPE(fc);
+ stype = WLAN_FC_GET_STYPE(fc);
+
+ switch (type) {
+ case WLAN_FC_TYPE_DATA:
+ if (len < 24)
+ return;
+ switch (fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)) {
+ case WLAN_FC_TODS:
+ bssid = hdr->addr1;
+ break;
+ case WLAN_FC_FROMDS:
+ bssid = hdr->addr2;
+ break;
+ default:
+ /* discard */
+ return;
+ }
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ /* discard non-ps-poll frames */
+ if (stype != WLAN_FC_STYPE_PSPOLL)
+ return;
+ bssid = hdr->addr1;
+ break;
+ case WLAN_FC_TYPE_MGMT:
+ bssid = hdr->addr3;
+ break;
+ default:
+ /* discard */
+ return;
+ }
+
+ /* find interface frame belongs to */
+ for (i = 0; i < iface->num_bss; i++) {
+ if (memcmp(bssid, iface->bss[i]->own_addr, ETH_ALEN) == 0) {
+ hapd = iface->bss[i];
+ break;
+ }
+ }
+
+ if (hapd == NULL) {
+ hapd = iface->bss[0];
+
+ if (bssid[0] != 0xff || bssid[1] != 0xff ||
+ bssid[2] != 0xff || bssid[3] != 0xff ||
+ bssid[4] != 0xff || bssid[5] != 0xff) {
+ /*
+ * Unknown BSSID - drop frame if this is not from
+ * passive scanning or a beacon (at least ProbeReq
+ * frames to other APs may be allowed through RX
+ * filtering in the wlan hw/driver)
+ */
+ if ((type != WLAN_FC_TYPE_MGMT ||
+ stype != WLAN_FC_STYPE_BEACON))
+ return;
+ } else
+ broadcast_bssid = 1;
+ }
+
+ switch (msg_type) {
+ case ieee80211_msg_normal:
+ /* continue processing */
+ break;
+ case ieee80211_msg_tx_callback_ack:
+ handle_tx_callback(hapd, buf, data_len, 1);
+ return;
+ case ieee80211_msg_tx_callback_fail:
+ handle_tx_callback(hapd, buf, data_len, 0);
+ return;
+ }
+
+ switch (type) {
+ case WLAN_FC_TYPE_MGMT:
+ if (stype != WLAN_FC_STYPE_BEACON &&
+ stype != WLAN_FC_STYPE_PROBE_REQ)
+ wpa_printf(MSG_MSGDUMP, "MGMT");
+ if (broadcast_bssid) {
+ for (i = 0; i < iface->num_bss; i++)
+ hostapd_mgmt_rx(iface->bss[i], buf, data_len,
+ stype, hfi);
+ } else
+ hostapd_mgmt_rx(hapd, buf, data_len, stype, hfi);
+ break;
+ case WLAN_FC_TYPE_CTRL:
+ /* can only get here with PS-Poll frames */
+ wpa_printf(MSG_DEBUG, "CTRL");
+ hostapd_rx_from_unknown_sta(drv->hapd, hdr->addr2);
+ break;
+ case WLAN_FC_TYPE_DATA:
+ hostapd_rx_from_unknown_sta(drv->hapd, hdr->addr2);
+ break;
+ }
+}
+
+
+static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct wpa_driver_nl80211_data *drv = eloop_ctx;
+ struct sockaddr_ll lladdr;
+ unsigned char buf[3000];
+ int len;
+ socklen_t fromlen = sizeof(lladdr);
+
+ len = recvfrom(sock, buf, sizeof(buf), 0,
+ (struct sockaddr *)&lladdr, &fromlen);
+ if (len < 0) {
+ perror("recv");
+ return;
+ }
+
+ if (have_ifidx(drv, lladdr.sll_ifindex)) {
+ struct hostapd_data *hapd;
+ hapd = hostapd_sta_get_bss(drv->hapd, lladdr.sll_addr);
+ if (!hapd)
+ return;
+ hostapd_eapol_receive(hapd, lladdr.sll_addr, buf, len);
+ }
+}
+
+
+static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv, const char *ifname,
+ int mode)
+{
+ struct nl_msg *msg;
+ int ret = -ENOBUFS;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return -ENOMEM;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
+ 0, NL80211_CMD_SET_INTERFACE, 0);
+ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
+ if_nametoindex(ifname));
+ NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
+
+ ret = send_and_recv_msgs(drv, msg, NULL, NULL);
+ if (!ret)
+ return 0;
+ nla_put_failure:
+ wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
+ "mode.", ifname);
+ return ret;
+}
+
+
+#ifdef CONFIG_IEEE80211N
+static void i802_add_neighbor(struct wpa_driver_nl80211_data *drv, u8 *bssid,
+ int freq, u8 *ie, size_t ie_len)
+{
+ struct ieee802_11_elems elems;
+ int ht, pri_chan = 0, sec_chan = 0;
+ struct ieee80211_ht_operation *oper;
+ struct hostapd_neighbor_bss *nnei;
+
+ ieee802_11_parse_elems(ie, ie_len, &elems, 0);
+ ht = elems.ht_capabilities || elems.ht_operation;
+ if (elems.ht_operation && elems.ht_operation_len >= sizeof(*oper)) {
+ oper = (struct ieee80211_ht_operation *) elems.ht_operation;
+ pri_chan = oper->control_chan;
+ if (oper->ht_param & HT_INFO_HT_PARAM_REC_TRANS_CHNL_WIDTH) {
+ if (oper->ht_param &
+ HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
+ sec_chan = pri_chan + 4;
+ else if (oper->ht_param &
+ HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
+ sec_chan = pri_chan - 4;
+ }
+ }
+
+ wpa_printf(MSG_DEBUG, "nl80211: Neighboring BSS - bssid=" MACSTR
+ " freq=%d MHz HT=%d pri_chan=%d sec_chan=%d",
+ MAC2STR(bssid), freq, ht, pri_chan, sec_chan);
+
+ nnei = os_realloc(drv->neighbors, (drv->num_neighbors + 1) *
+ sizeof(struct hostapd_neighbor_bss));
+ if (nnei == NULL)
+ return;
+ drv->neighbors = nnei;
+ nnei = &nnei[drv->num_neighbors];
+ os_memcpy(nnei->bssid, bssid, ETH_ALEN);
+ nnei->freq = freq;
+ nnei->ht = !!ht;
+ nnei->pri_chan = pri_chan;
+ nnei->sec_chan = sec_chan;
+ drv->num_neighbors++;
+}
+
+
+static int i802_get_scan_freq(struct iw_event *iwe, int *freq)
+{
+ int divi = 1000000, i;
+
+ if (iwe->u.freq.e == 0) {
+ /*
+ * Some drivers do not report frequency, but a channel.
+ * Try to map this to frequency by assuming they are using
+ * IEEE 802.11b/g. But don't overwrite a previously parsed
+ * frequency if the driver sends both frequency and channel,
+ * since the driver may be sending an A-band channel that we
+ * don't handle here.
+ */
+
+ if (*freq)
+ return 0;
+
+ if (iwe->u.freq.m >= 1 && iwe->u.freq.m <= 13) {
+ *freq = 2407 + 5 * iwe->u.freq.m;
+ return 0;
+ } else if (iwe->u.freq.m == 14) {
+ *freq = 2484;
+ return 0;
+ }
+ }
+
+ if (iwe->u.freq.e > 6) {
+ wpa_printf(MSG_DEBUG, "Invalid freq in scan results: "
+ "m=%d e=%d", iwe->u.freq.m, iwe->u.freq.e);
+ return -1;
+ }
+
+ for (i = 0; i < iwe->u.freq.e; i++)
+ divi /= 10;
+ *freq = iwe->u.freq.m / divi;
+ return 0;
+}
+
+
+static int i802_parse_scan(struct wpa_driver_nl80211_data *drv, u8 *res_buf,
+ size_t len)
+{
+ size_t ap_num = 0;
+ int first;
+ struct iw_event iwe_buf, *iwe = &iwe_buf;
+ char *pos, *end, *custom;
+ u8 bssid[ETH_ALEN];
+ int freq = 0;
+ u8 *ie = NULL;
+ size_t ie_len = 0;
+
+ ap_num = 0;
+ first = 1;
+
+ pos = (char *) res_buf;
+ end = (char *) res_buf + len;
+
+ while (pos + IW_EV_LCP_LEN <= end) {
+ /* Event data may be unaligned, so make a local, aligned copy
+ * before processing. */
+ os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
+ if (iwe->len <= IW_EV_LCP_LEN)
+ break;
+
+ custom = pos + IW_EV_POINT_LEN;
+ if (iwe->cmd == IWEVGENIE) {
+ /* WE-19 removed the pointer from struct iw_point */
+ char *dpos = (char *) &iwe_buf.u.data.length;
+ int dlen = dpos - (char *) &iwe_buf;
+ os_memcpy(dpos, pos + IW_EV_LCP_LEN,
+ sizeof(struct iw_event) - dlen);
+ } else {
+ os_memcpy(&iwe_buf, pos, sizeof(struct iw_event));
+ custom += IW_EV_POINT_OFF;
+ }
+
+ switch (iwe->cmd) {
+ case SIOCGIWAP:
+ if (!first)
+ i802_add_neighbor(drv, bssid, freq, ie,
+ ie_len);
+ first = 0;
+ os_memcpy(bssid, iwe->u.ap_addr.sa_data, ETH_ALEN);
+ freq = 0;
+ ie = NULL;
+ ie_len = 0;
+ break;
+ case SIOCGIWFREQ:
+ i802_get_scan_freq(iwe, &freq);
+ break;
+ case IWEVGENIE:
+ if (custom + iwe->u.data.length > end) {
+ wpa_printf(MSG_ERROR, "IWEVGENIE overflow");
+ return -1;
+ }
+ ie = (u8 *) custom;
+ ie_len = iwe->u.data.length;
+ break;
+ }
+
+ pos += iwe->len;
+ }
+
+ if (!first)
+ i802_add_neighbor(drv, bssid, freq, ie, ie_len);
+
+ return 0;
+}
+
+
+static int i802_get_ht_scan_res(struct wpa_driver_nl80211_data *drv)
+{
+ struct iwreq iwr;
+ u8 *res_buf;
+ size_t res_buf_len;
+ int res;
+
+ res_buf_len = IW_SCAN_MAX_DATA;
+ for (;;) {
+ res_buf = os_malloc(res_buf_len);
+ if (res_buf == NULL)
+ return -1;
+ os_memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+ iwr.u.data.pointer = res_buf;
+ iwr.u.data.length = res_buf_len;
+
+ if (ioctl(drv->ioctl_sock, SIOCGIWSCAN, &iwr) == 0)
+ break;
+
+ if (errno == E2BIG && res_buf_len < 65535) {
+ os_free(res_buf);
+ res_buf = NULL;
+ res_buf_len *= 2;
+ if (res_buf_len > 65535)
+ res_buf_len = 65535; /* 16-bit length field */
+ wpa_printf(MSG_DEBUG, "Scan results did not fit - "
+ "trying larger buffer (%lu bytes)",
+ (unsigned long) res_buf_len);
+ } else {
+ perror("ioctl[SIOCGIWSCAN]");
+ os_free(res_buf);
+ return -1;
+ }
+ }
+
+ if (iwr.u.data.length > res_buf_len) {
+ os_free(res_buf);
+ return -1;
+ }
+
+ res = i802_parse_scan(drv, res_buf, iwr.u.data.length);
+ os_free(res_buf);
+
+ return res;
+}
+
+
+static int i802_is_event_wireless_scan_complete(char *data, int len)
+{
+ struct iw_event iwe_buf, *iwe = &iwe_buf;
+ char *pos, *end;
+
+ pos = data;
+ end = data + len;
+
+ while (pos + IW_EV_LCP_LEN <= end) {
+ /* Event data may be unaligned, so make a local, aligned copy
+ * before processing. */
+ os_memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
+ if (iwe->cmd == SIOCGIWSCAN)
+ return 1;
+
+ pos += iwe->len;
+ }
+
+ return 0;
+}
+
+
+static int i802_is_rtm_scan_complete(int ifindex, struct nlmsghdr *h, int len)
+{
+ struct ifinfomsg *ifi;
+ int attrlen, _nlmsg_len, rta_len;
+ struct rtattr *attr;
+
+ if (len < (int) sizeof(*ifi))
+ return 0;
+
+ ifi = NLMSG_DATA(h);
+
+ if (ifindex != ifi->ifi_index)
+ return 0; /* event for foreign ifindex */
+
+ _nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
+
+ attrlen = h->nlmsg_len - _nlmsg_len;
+ if (attrlen < 0)
+ return 0;
+
+ attr = (struct rtattr *) (((char *) ifi) + _nlmsg_len);
+
+ rta_len = RTA_ALIGN(sizeof(struct rtattr));
+ while (RTA_OK(attr, attrlen)) {
+ if (attr->rta_type == IFLA_WIRELESS &&
+ i802_is_event_wireless_scan_complete(
+ ((char *) attr) + rta_len,
+ attr->rta_len - rta_len))
+ return 1;
+ attr = RTA_NEXT(attr, attrlen);
+ }
+
+ return 0;
+}
+
+
+static int i802_is_scan_complete(int s, int ifindex)
+{
+ char buf[1024];
+ int left;
+ struct nlmsghdr *h;
+
+ left = recv(s, buf, sizeof(buf), MSG_DONTWAIT);
+ if (left < 0) {
+ perror("recv(netlink)");
+ return 0;
+ }
+
+ h = (struct nlmsghdr *) buf;
+ while (left >= (int) sizeof(*h)) {
+ int len, plen;
+
+ len = h->nlmsg_len;
+ plen = len - sizeof(*h);
+ if (len > left || plen < 0) {
+ wpa_printf(MSG_DEBUG, "Malformed netlink message: "
+ "len=%d left=%d plen=%d",
+ len, left, plen);
+ break;
+ }
+
+ switch (h->nlmsg_type) {
+ case RTM_NEWLINK:
+ if (i802_is_rtm_scan_complete(ifindex, h, plen))
+ return 1;
+ break;
+ }
+
+ len = NLMSG_ALIGN(len);
+ left -= len;
+ h = (struct nlmsghdr *) ((char *) h + len);
+ }
+
+ return 0;
+}
+
+
+static int i802_ht_scan(struct wpa_driver_nl80211_data *drv)
+{
+ struct iwreq iwr;
+ int s, res, ifindex;
+ struct sockaddr_nl local;
+ time_t now, end;
+ fd_set rfds;
+ struct timeval tv;
+
+ wpa_printf(MSG_DEBUG, "nl80211: Scanning overlapping BSSes before "
+ "starting HT 20/40 MHz BSS");
+
+ /* Request a new scan */
+ /* TODO: would be enough to scan the selected band */
+ os_memset(&iwr, 0, sizeof(iwr));
+ os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
+ if (ioctl(drv->ioctl_sock, SIOCSIWSCAN, &iwr) < 0) {
+ perror("ioctl[SIOCSIWSCAN]");
+ return -1;
+ }
+
+ ifindex = if_nametoindex(drv->ifname);
+
+ /* Wait for scan completion event or timeout */
+ s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+ if (s < 0) {
+ perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
+ return -1;
+ }
+
+ os_memset(&local, 0, sizeof(local));
+ local.nl_family = AF_NETLINK;
+ local.nl_groups = RTMGRP_LINK;
+ if (bind(s, (struct sockaddr *) &local, sizeof(local)) < 0) {
+ perror("bind(netlink)");
+ close(s);
+ return -1;
+ }
+
+ time(&end);
+ end += 30; /* Wait at most 30 seconds for scan results */
+ for (;;) {
+ time(&now);
+ tv.tv_sec = end > now ? end - now : 0;
+ tv.tv_usec = 0;
+ FD_ZERO(&rfds);
+ FD_SET(s, &rfds);
+ res = select(s + 1, &rfds, NULL, NULL, &tv);
+ if (res < 0) {
+ perror("select");
+ /* Assume results are ready after 10 seconds wait */
+ os_sleep(10, 0);
+ break;
+ } else if (res) {
+ if (i802_is_scan_complete(s, ifindex)) {
+ wpa_printf(MSG_DEBUG, "nl80211: Scan "
+ "completed");
+ break;
+ }
+ } else {
+ wpa_printf(MSG_DEBUG, "nl80211: Scan timeout");
+ /* Assume results are ready to be read now */
+ break;
+ }
+ }
+
+ close(s);
+
+ return i802_get_ht_scan_res(drv);
+}
+#endif /* CONFIG_IEEE80211N */
+
+
+static int i802_init_sockets(struct wpa_driver_nl80211_data *drv, const u8 *bssid)
+{
+ struct ifreq ifr;
+ int ret;
+
+ drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
+ if (drv->ioctl_sock < 0) {
+ perror("socket[PF_INET,SOCK_DGRAM]");
+ return -1;
+ }
+
+ /* start listening for EAPOL on the default AP interface */
+ add_ifidx(drv, if_nametoindex(drv->ifname));
+
+ if (hostapd_set_iface_flags(drv, drv->ifname, 0))
+ return -1;
+
+ if (bssid) {
+ os_strlcpy(ifr.ifr_name, drv->ifname, IFNAMSIZ);
+ memcpy(ifr.ifr_hwaddr.sa_data, bssid, ETH_ALEN);
+ ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
+
+ if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
+ perror("ioctl(SIOCSIFHWADDR)");
+ return -1;
+ }
+ }
+
+ /*
+ * initialise generic netlink and nl80211
+ */
+ drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!drv->nl_cb) {
+ printf("Failed to allocate netlink callbacks.\n");
+ return -1;
+ }
+
+ drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
+ if (!drv->nl_handle) {
+ printf("Failed to allocate netlink handle.\n");
+ return -1;
+ }
+
+ if (genl_connect(drv->nl_handle)) {
+ printf("Failed to connect to generic netlink.\n");
+ return -1;
+ }
+
+#ifdef CONFIG_LIBNL20
+ if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
+ printf("Failed to allocate generic netlink cache.\n");
+ return -1;
+ }
+#else /* CONFIG_LIBNL20 */
+ drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
+ if (!drv->nl_cache) {
+ printf("Failed to allocate generic netlink cache.\n");
+ return -1;
+ }
+#endif /* CONFIG_LIBNL20 */
+
+ drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
+ if (!drv->nl80211) {
+ printf("nl80211 not found.\n");
+ return -1;
+ }
+
+ ret = nl_get_multicast_id(drv, "nl80211", "scan");
+ if (ret >= 0)
+ ret = nl_socket_add_membership(drv->nl_handle, ret);
+ if (ret < 0) {
+ wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
+ "membership for scan events: %d (%s)",
+ ret, strerror(-ret));
+ }
+
+ ret = nl_get_multicast_id(drv, "nl80211", "mlme");
+ if (ret >= 0)
+ ret = nl_socket_add_membership(drv->nl_handle, ret);
+ if (ret < 0) {
+ wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
+ "membership for mlme events: %d (%s)",
+ ret, strerror(-ret));
+ }
+
+ eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
+ wpa_driver_nl80211_event_receive, drv,
+ drv->hapd);
+
+#ifdef CONFIG_IEEE80211N
+ if (drv->ht_40mhz_scan) {
+ if (nl80211_set_mode(drv, drv->ifname, NL80211_IFTYPE_STATION)
+ || hostapd_set_iface_flags(drv, drv->ifname, 1) ||
+ i802_ht_scan(drv) ||
+ hostapd_set_iface_flags(drv, drv->ifname, 0)) {
+ wpa_printf(MSG_ERROR, "Failed to scan channels for "
+ "HT 40 MHz operations");
+ return -1;
+ }
+ }
+#endif /* CONFIG_IEEE80211N */
+
+ /* Initialise a monitor interface */
+ if (nl80211_create_monitor_interface(drv))
+ return -1;
+
+ if (nl80211_set_mode(drv, drv->ifname, NL80211_IFTYPE_AP))
+ goto fail1;
+
+ if (hostapd_set_iface_flags(drv, drv->ifname, 1))
+ goto fail1;
+
+ drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
+ if (drv->eapol_sock < 0) {
+ perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
+ goto fail1;
+ }
+
+ if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
+ {
+ printf("Could not register read socket for eapol\n");
+ return -1;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ os_strlcpy(ifr.ifr_name, drv->ifname, sizeof(ifr.ifr_name));
+ if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
+ perror("ioctl(SIOCGIFHWADDR)");
+ goto fail1;
+ }
+
+ if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
+ printf("Invalid HW-addr family 0x%04x\n",
+ ifr.ifr_hwaddr.sa_family);
+ goto fail1;
+ }
+ memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
+
+ return 0;
+
+fail1:
+ nl80211_remove_iface(drv, drv->monitor_ifidx);
+ return -1;
+}
+
+
+static int i802_get_inact_sec(void *priv, const u8 *addr)
+{
+ struct hostap_sta_driver_data data;
+ int ret;
+
+ data.inactive_msec = (unsigned long) -1;
+ ret = i802_read_sta_data(priv, &data, addr);
+ if (ret || data.inactive_msec == (unsigned long) -1)
+ return -1;
+ return data.inactive_msec / 1000;
+}
+
+
+static int i802_sta_clear_stats(void *priv, const u8 *addr)
+{
+#if 0
+ /* TODO */
+#endif
+ return 0;
+}
+
+
+static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DEAUTH);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
+ memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
+ mgmt.u.deauth.reason_code = host_to_le16(reason);
+ return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
+ IEEE80211_HDRLEN +
+ sizeof(mgmt.u.deauth));
+}
+
+
+static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct ieee80211_mgmt mgmt;
+
+ memset(&mgmt, 0, sizeof(mgmt));
+ mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
+ WLAN_FC_STYPE_DISASSOC);
+ memcpy(mgmt.da, addr, ETH_ALEN);
+ memcpy(mgmt.sa, drv->hapd->own_addr, ETH_ALEN);
+ memcpy(mgmt.bssid, drv->hapd->own_addr, ETH_ALEN);
+ mgmt.u.disassoc.reason_code = host_to_le16(reason);
+ return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
+ IEEE80211_HDRLEN +
+ sizeof(mgmt.u.disassoc));
+}
+
+
+static const struct hostapd_neighbor_bss *
+i802_get_neighbor_bss(void *priv, size_t *num)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ *num = drv->num_neighbors;
+ return drv->neighbors;
+}
+
+
+static void *i802_init(struct hostapd_data *hapd,
+ struct wpa_init_params *params)
+{
+ struct wpa_driver_nl80211_data *drv;
+ size_t i;
+
+ drv = os_zalloc(sizeof(struct wpa_driver_nl80211_data));
+ if (drv == NULL) {
+ printf("Could not allocate memory for i802 driver data\n");
+ return NULL;
+ }
+
+ drv->hapd = hapd;
+ memcpy(drv->ifname, params->ifname, sizeof(drv->ifname));
+ drv->ifindex = if_nametoindex(drv->ifname);
+ drv->bss.ifindex = drv->ifindex;
+
+ drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
+ drv->if_indices = drv->default_if_indices;
+ for (i = 0; i < params->num_bridge; i++) {
+ if (params->bridge[i])
+ add_ifidx(drv, if_nametoindex(params->bridge[i]));
+ }
+ drv->ht_40mhz_scan = params->ht_40mhz_scan;
+
+ if (i802_init_sockets(drv, params->bssid))
+ goto failed;
+
+ return drv;
+
+failed:
+ free(drv);
+ return NULL;
+}
+
+
+static void i802_deinit(void *priv)
+{
+ struct wpa_driver_nl80211_data *drv = priv;
+ struct i802_bss *bss, *prev;
+
+ if (drv->last_freq_ht) {
+ /* Clear HT flags from the driver */
+ struct hostapd_freq_params freq;
+ os_memset(&freq, 0, sizeof(freq));
+ freq.freq = drv->last_freq;
+ i802_set_freq(priv, &freq);
+ }
+
+ i802_del_beacon(drv);
+
+ /* remove monitor interface */
+ nl80211_remove_iface(drv, drv->monitor_ifidx);
+
+ (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
+
+ if (drv->monitor_sock >= 0) {
+ eloop_unregister_read_sock(drv->monitor_sock);
+ close(drv->monitor_sock);
+ }
+ if (drv->ioctl_sock >= 0)
+ close(drv->ioctl_sock);
+ if (drv->eapol_sock >= 0) {
+ eloop_unregister_read_sock(drv->eapol_sock);
+ close(drv->eapol_sock);
+ }
+
+ eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
+ genl_family_put(drv->nl80211);
+ nl_cache_free(drv->nl_cache);
+ nl_handle_destroy(drv->nl_handle);
+ nl_cb_put(drv->nl_cb);
+
+ if (drv->if_indices != drv->default_if_indices)
+ free(drv->if_indices);
+
+ os_free(drv->neighbors);
+
+ bss = drv->bss.next;
+ while (bss) {
+ prev = bss;
+ bss = bss->next;
+ os_free(bss);
+ }
+
+ free(drv);
+}
+
+#endif /* HOSTAPD */
+
+
+const struct wpa_driver_ops wpa_driver_nl80211_ops = {
+ .name = "nl80211",
+ .desc = "Linux nl80211/cfg80211",
+ .get_bssid = wpa_driver_nl80211_get_bssid,
+ .get_ssid = wpa_driver_nl80211_get_ssid,
+ .set_key = wpa_driver_nl80211_set_key,
+ .scan2 = wpa_driver_nl80211_scan,
+ .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
+ .deauthenticate = wpa_driver_nl80211_deauthenticate,
+ .disassociate = wpa_driver_nl80211_disassociate,
+ .authenticate = wpa_driver_nl80211_authenticate,
+ .associate = wpa_driver_nl80211_associate,
+ .init = wpa_driver_nl80211_init,
+ .deinit = wpa_driver_nl80211_deinit,
+ .get_capa = wpa_driver_nl80211_get_capa,
+ .set_operstate = wpa_driver_nl80211_set_operstate,
+ .set_country = wpa_driver_nl80211_set_country,
+#ifdef CONFIG_AP
+ .set_beacon = wpa_driver_nl80211_set_beacon,
+#endif /* CONFIG_AP */
+#if defined(CONFIG_AP) || defined(HOSTAPD)
+ .send_mlme = wpa_driver_nl80211_send_mlme,
+ .set_beacon_int = wpa_driver_nl80211_set_beacon_int,
+ .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
+#endif /* CONFIG_AP || HOSTAPD */
+#ifdef HOSTAPD
+ .hapd_init = i802_init,
+ .hapd_deinit = i802_deinit,
+ .hapd_set_key = i802_set_key,
+ .get_seqnum = i802_get_seqnum,
+ .flush = i802_flush,
+ .read_sta_data = i802_read_sta_data,
+ .hapd_send_eapol = i802_send_eapol,
+ .sta_set_flags = i802_sta_set_flags,
+ .sta_deauth = i802_sta_deauth,
+ .sta_disassoc = i802_sta_disassoc,
+ .sta_remove = i802_sta_remove,
+ .sta_add = i802_sta_add,
+ .get_inact_sec = i802_get_inact_sec,
+ .sta_clear_stats = i802_sta_clear_stats,
+ .set_freq = i802_set_freq,
+ .set_rts = i802_set_rts,
+ .set_frag = i802_set_frag,
+ .set_retry = i802_set_retry,
+ .set_rate_sets = i802_set_rate_sets,
+ .hapd_set_beacon = i802_set_beacon,
+ .set_cts_protect = i802_set_cts_protect,
+ .set_preamble = i802_set_preamble,
+ .set_short_slot_time = i802_set_short_slot_time,
+ .set_tx_queue_params = i802_set_tx_queue_params,
+ .bss_add = i802_bss_add,
+ .bss_remove = i802_bss_remove,
+ .if_add = i802_if_add,
+ .if_update = i802_if_update,
+ .if_remove = i802_if_remove,
+ .set_sta_vlan = i802_set_sta_vlan,
+ .get_neighbor_bss = i802_get_neighbor_bss,
+#endif /* HOSTAPD */
};
projects / wpasupplicant / blobdiff