![Jouni Malinen](/assets/img/avatar_default.png)
linux/wireless.h ends up including number of Linux kernel header files and many of the definitions are conflicting with (or at least duplicating) definitions in net/if.h.
2400 lines
54 KiB
C
2400 lines
54 KiB
C
/*
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* hostapd / Kernel driver communication via nl80211
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* Copyright (c) 2002-2007, Jouni Malinen <j@w1.fi>
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* Copyright (c) 2003-2004, Instant802 Networks, Inc.
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* Copyright (c) 2005-2006, Devicescape Software, Inc.
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* Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "includes.h"
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#include <sys/ioctl.h>
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#include <netlink/genl/genl.h>
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#include <netlink/genl/family.h>
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#include <netlink/genl/ctrl.h>
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#include <netlink/msg.h>
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#include <netlink/attr.h>
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#include <linux/nl80211.h>
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#include <net/if.h>
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#include <linux/if_packet.h>
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#include <linux/if_ether.h> /* The L2 protocols */
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#include "wireless_copy.h"
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#include <net/if_arp.h>
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#include "hostapd.h"
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#include "driver.h"
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#include "ieee802_1x.h"
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#include "eloop.h"
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#include "ieee802_11.h"
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#include "sta_info.h"
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#include "hw_features.h"
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#include "mlme.h"
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#include "radiotap.h"
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#include "radiotap_iter.h"
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enum ieee80211_msg_type {
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ieee80211_msg_normal = 0,
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ieee80211_msg_tx_callback_ack = 1,
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ieee80211_msg_tx_callback_fail = 2,
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};
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struct i802_driver_data {
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struct hostapd_data *hapd;
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char iface[IFNAMSIZ + 1];
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int bridge;
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int ioctl_sock; /* socket for ioctl() use */
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int wext_sock; /* socket for wireless events */
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int eapol_sock; /* socket for EAPOL frames */
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int monitor_sock; /* socket for monitor */
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int monitor_ifidx;
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int default_if_indices[16];
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int *if_indices;
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int num_if_indices;
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int we_version;
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struct nl_handle *nl_handle;
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struct nl_cache *nl_cache;
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struct nl_cb *nl_cb;
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struct genl_family *nl80211;
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int dtim_period, beacon_int;
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unsigned int beacon_set:1;
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unsigned int ieee802_1x_active:1;
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};
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static void add_ifidx(struct i802_driver_data *drv, int ifidx)
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{
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int i;
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int *old;
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for (i = 0; i < drv->num_if_indices; i++) {
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if (drv->if_indices[i] == 0) {
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drv->if_indices[i] = ifidx;
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return;
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}
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}
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if (drv->if_indices != drv->default_if_indices)
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old = drv->if_indices;
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else
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old = NULL;
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drv->if_indices = realloc(old,
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sizeof(int) * (drv->num_if_indices + 1));
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if (!drv->if_indices) {
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if (!old)
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drv->if_indices = drv->default_if_indices;
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else
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drv->if_indices = old;
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wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
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"interfaces");
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wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
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return;
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}
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drv->if_indices[drv->num_if_indices] = ifidx;
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drv->num_if_indices++;
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}
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static void del_ifidx(struct i802_driver_data *drv, int ifidx)
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{
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int i;
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for (i = 0; i < drv->num_if_indices; i++) {
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if (drv->if_indices[i] == ifidx) {
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drv->if_indices[i] = 0;
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break;
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}
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}
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}
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static int have_ifidx(struct i802_driver_data *drv, int ifidx)
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{
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int i;
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if (ifidx == drv->bridge)
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return 1;
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for (i = 0; i < drv->num_if_indices; i++)
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if (drv->if_indices[i] == ifidx)
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return 1;
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return 0;
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}
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/* helper for netlink get routines */
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static int ack_wait_handler(struct nl_msg *msg, void *arg)
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{
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int *finished = arg;
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*finished = 1;
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return NL_STOP;
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}
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static int hostapd_set_iface_flags(struct i802_driver_data *drv,
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const char *ifname, int dev_up)
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{
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struct ifreq ifr;
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if (drv->ioctl_sock < 0)
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return -1;
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memset(&ifr, 0, sizeof(ifr));
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os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
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if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
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perror("ioctl[SIOCGIFFLAGS]");
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wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
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drv->iface);
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return -1;
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}
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if (dev_up)
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ifr.ifr_flags |= IFF_UP;
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else
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ifr.ifr_flags &= ~IFF_UP;
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if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
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perror("ioctl[SIOCSIFFLAGS]");
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return -1;
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}
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return 0;
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}
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static int i802_set_encryption(const char *iface, void *priv, const char *alg,
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const u8 *addr, int idx, const u8 *key,
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size_t key_len, int txkey)
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{
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struct i802_driver_data *drv = priv;
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struct nl_msg *msg;
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int ret = -1;
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int err = 0;
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msg = nlmsg_alloc();
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if (!msg)
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goto out;
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if (strcmp(alg, "none") == 0) {
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_DEL_KEY, 0);
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} else {
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_NEW_KEY, 0);
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NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
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if (strcmp(alg, "WEP") == 0) {
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if (key_len == 5)
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NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
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0x000FAC01);
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else
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NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
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0x000FAC05);
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} else if (strcmp(alg, "TKIP") == 0)
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NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC02);
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else if (strcmp(alg, "CCMP") == 0)
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NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER, 0x000FAC04);
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else
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goto out;
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}
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if (addr)
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NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
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NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
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if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
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(err = nl_wait_for_ack(drv->nl_handle)) < 0) {
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if (err != -ENOENT) {
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ret = 0;
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goto out;
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}
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}
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/*
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* If we need to set the default TX key we do that below,
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* otherwise we're done here.
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*/
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if (!txkey || addr) {
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ret = 0;
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goto out;
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}
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nlmsg_free(msg);
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msg = nlmsg_alloc();
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if (!msg)
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goto out;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_SET_KEY, 0);
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NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
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NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
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if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
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(err = nl_wait_for_ack(drv->nl_handle)) < 0) {
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if (err != -ENOENT) {
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ret = 0;
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goto out;
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}
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}
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ret = 0;
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out:
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nla_put_failure:
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nlmsg_free(msg);
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return ret;
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}
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static inline int min_int(int a, int b)
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{
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if (a < b)
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return a;
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return b;
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}
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static int get_key_handler(struct nl_msg *msg, void *arg)
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{
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struct nlattr *tb[NL80211_ATTR_MAX];
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struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
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nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
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genlmsg_attrlen(gnlh, 0), NULL);
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/*
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* TODO: validate the key index and mac address!
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* Otherwise, there's a race condition as soon as
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* the kernel starts sending key notifications.
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*/
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if (tb[NL80211_ATTR_KEY_SEQ])
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memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
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min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
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return NL_SKIP;
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}
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static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
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int idx, u8 *seq)
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{
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struct i802_driver_data *drv = priv;
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struct nl_msg *msg;
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struct nl_cb *cb = NULL;
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int ret = -1;
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int err = 0;
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int finished = 0;
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msg = nlmsg_alloc();
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if (!msg)
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goto out;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_GET_KEY, 0);
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if (addr)
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NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
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NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
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cb = nl_cb_clone(drv->nl_cb);
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if (!cb)
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goto out;
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memset(seq, 0, 6);
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if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
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goto out;
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nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_key_handler, seq);
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nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
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err = nl_recvmsgs(drv->nl_handle, cb);
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if (!finished)
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err = nl_wait_for_ack(drv->nl_handle);
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if (err < 0)
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goto out;
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ret = 0;
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out:
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nl_cb_put(cb);
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nla_put_failure:
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nlmsg_free(msg);
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return ret;
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}
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static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
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int mode)
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{
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return -1;
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}
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static int i802_set_ssid(const char *ifname, void *priv, const u8 *buf,
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int len)
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{
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struct i802_driver_data *drv = priv;
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struct iwreq iwr;
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memset(&iwr, 0, sizeof(iwr));
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os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
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iwr.u.essid.flags = 1; /* SSID active */
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iwr.u.essid.pointer = (caddr_t) buf;
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iwr.u.essid.length = len;
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if (ioctl(drv->ioctl_sock, SIOCSIWESSID, &iwr) < 0) {
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perror("ioctl[SIOCSIWESSID]");
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printf("len=%d\n", len);
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return -1;
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}
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return 0;
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}
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static int i802_send_mgmt_frame(void *priv, const void *data, size_t len,
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int flags)
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{
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struct ieee80211_hdr *hdr = (void*) data;
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__u8 rtap_hdr[] = {
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0x00, 0x00, /* radiotap version */
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0x0e, 0x00, /* radiotap length */
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0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
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0x0c, /* F_WEP | F_FRAG (encrypt/fragment if required) */
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0x00, /* padding */
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0x00, 0x00, /* RX and TX flags to indicate that */
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0x00, 0x00, /* this is the injected frame directly */
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};
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struct i802_driver_data *drv = priv;
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struct iovec iov[2] = {
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{
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.iov_base = &rtap_hdr,
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.iov_len = sizeof(rtap_hdr),
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},
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{
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.iov_base = (void*)data,
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.iov_len = len,
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}
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};
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struct msghdr msg = {
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.msg_name = NULL,
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.msg_namelen = 0,
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.msg_iov = iov,
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.msg_iovlen = 2,
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.msg_control = NULL,
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.msg_controllen = 0,
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.msg_flags = 0,
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};
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/*
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* ugh, guess what, the generic code sets one of the version
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* bits to request tx callback
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*/
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hdr->frame_control &= ~host_to_le16(BIT(1));
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return sendmsg(drv->monitor_sock, &msg, flags);
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}
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/* Set kernel driver on given frequency (MHz) */
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static int i802_set_freq(void *priv, int mode, int freq)
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{
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struct i802_driver_data *drv = priv;
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struct iwreq iwr;
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memset(&iwr, 0, sizeof(iwr));
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os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
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iwr.u.freq.m = freq;
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iwr.u.freq.e = 6;
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if (ioctl(drv->ioctl_sock, SIOCSIWFREQ, &iwr) < 0) {
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perror("ioctl[SIOCSIWFREQ]");
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return -1;
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}
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return 0;
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}
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|
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static int i802_set_rts(void *priv, int rts)
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{
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struct i802_driver_data *drv = priv;
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struct iwreq iwr;
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|
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memset(&iwr, 0, sizeof(iwr));
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os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
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iwr.u.rts.value = rts;
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iwr.u.rts.fixed = 1;
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|
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if (ioctl(drv->ioctl_sock, SIOCSIWRTS, &iwr) < 0) {
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perror("ioctl[SIOCSIWRTS]");
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return -1;
|
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}
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|
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return 0;
|
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}
|
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|
|
|
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static int i802_get_rts(void *priv, int *rts)
|
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{
|
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struct i802_driver_data *drv = priv;
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struct iwreq iwr;
|
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|
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memset(&iwr, 0, sizeof(iwr));
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os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
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|
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if (ioctl(drv->ioctl_sock, SIOCGIWRTS, &iwr) < 0) {
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perror("ioctl[SIOCGIWRTS]");
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return -1;
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}
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|
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*rts = iwr.u.rts.value;
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|
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return 0;
|
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}
|
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|
|
|
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static int i802_set_frag(void *priv, int frag)
|
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{
|
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struct i802_driver_data *drv = priv;
|
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struct iwreq iwr;
|
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|
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memset(&iwr, 0, sizeof(iwr));
|
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os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
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iwr.u.frag.value = frag;
|
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iwr.u.frag.fixed = 1;
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|
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if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &iwr) < 0) {
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perror("ioctl[SIOCSIWFRAG]");
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return -1;
|
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}
|
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|
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return 0;
|
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}
|
|
|
|
|
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static int i802_get_frag(void *priv, int *frag)
|
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{
|
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struct i802_driver_data *drv = priv;
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struct iwreq iwr;
|
|
|
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memset(&iwr, 0, sizeof(iwr));
|
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os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
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|
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if (ioctl(drv->ioctl_sock, SIOCGIWFRAG, &iwr) < 0) {
|
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perror("ioctl[SIOCGIWFRAG]");
|
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return -1;
|
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}
|
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|
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*frag = iwr.u.frag.value;
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|
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return 0;
|
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}
|
|
|
|
|
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static int i802_set_retry(void *priv, int short_retry, int long_retry)
|
|
{
|
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struct i802_driver_data *drv = priv;
|
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struct iwreq iwr;
|
|
|
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memset(&iwr, 0, sizeof(iwr));
|
|
os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
|
|
|
|
iwr.u.retry.value = short_retry;
|
|
iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
|
|
if (ioctl(drv->ioctl_sock, SIOCSIWFRAG, &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, SIOCSIWFRAG, &iwr) < 0) {
|
|
perror("ioctl[SIOCSIWRETRY(long)]");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_get_retry(void *priv, int *short_retry, int *long_retry)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct iwreq iwr;
|
|
|
|
memset(&iwr, 0, sizeof(iwr));
|
|
os_strlcpy(iwr.ifr_name, drv->hapd->conf->iface, IFNAMSIZ);
|
|
|
|
iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MIN;
|
|
if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
|
|
perror("ioctl[SIOCGIWFRAG(short)]");
|
|
return -1;
|
|
}
|
|
*short_retry = iwr.u.retry.value;
|
|
|
|
iwr.u.retry.flags = IW_RETRY_LIMIT | IW_RETRY_MAX;
|
|
if (ioctl(drv->ioctl_sock, SIOCGIWRETRY, &iwr) < 0) {
|
|
perror("ioctl[SIOCGIWFRAG(long)]");
|
|
return -1;
|
|
}
|
|
*long_retry = iwr.u.retry.value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_flush(void *priv)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
|
|
ret = 0;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0) {
|
|
ret = -1;
|
|
}
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
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 },
|
|
};
|
|
|
|
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->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
|
|
|
|
return NL_SKIP;
|
|
}
|
|
|
|
static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
|
|
const u8 *addr)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
struct nl_cb *cb = NULL;
|
|
int ret = -1;
|
|
int err = 0;
|
|
int finished = 0;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
|
|
cb = nl_cb_clone(drv->nl_cb);
|
|
if (!cb)
|
|
goto out;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
|
|
goto out;
|
|
|
|
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_sta_handler, data);
|
|
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
|
|
|
|
err = nl_recvmsgs(drv->nl_handle, cb);
|
|
|
|
if (!finished)
|
|
err = nl_wait_for_ack(drv->nl_handle);
|
|
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
nl_cb_put(cb);
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
static int i802_send_eapol(void *priv, const u8 *addr, const u8 *data,
|
|
size_t data_len, int encrypt, const u8 *own_addr)
|
|
{
|
|
struct i802_driver_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 = i802_send_mgmt_frame(drv, (u8 *) hdr, len, 0);
|
|
free(hdr);
|
|
|
|
if (res < 0) {
|
|
perror("i802_send_eapol: send");
|
|
printf("i802_send_eapol - packet len: %lu - failed\n",
|
|
(unsigned long) len);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
static int i802_sta_add(const char *ifname, void *priv, const u8 *addr,
|
|
u16 aid, u16 capability, u8 *supp_rates,
|
|
size_t supp_rates_len, int flags, u16 listen_interval)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, aid);
|
|
NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, supp_rates_len,
|
|
supp_rates);
|
|
NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL, listen_interval);
|
|
|
|
ret = nl_send_auto_complete(drv->nl_handle, msg);
|
|
if (ret < 0)
|
|
goto nla_put_failure;
|
|
|
|
ret = nl_wait_for_ack(drv->nl_handle);
|
|
/* ignore EEXIST, this happens if a STA associates while associated */
|
|
if (ret == -EEXIST || ret >= 0)
|
|
ret = 0;
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_sta_remove(void *priv, const u8 *addr)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
|
|
ret = 0;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0) {
|
|
ret = -1;
|
|
}
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_sta_set_flags(void *priv, const u8 *addr,
|
|
int total_flags, int flags_or, int flags_and)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg, *flags = NULL;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
flags = nlmsg_alloc();
|
|
if (!flags)
|
|
goto free_msg;
|
|
|
|
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->iface));
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
|
|
if (total_flags & WLAN_STA_AUTHORIZED || !drv->ieee802_1x_active)
|
|
NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
|
|
|
|
if (total_flags & WLAN_STA_WME)
|
|
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 (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
|
|
goto nla_put_failure;
|
|
|
|
ret = 0;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0) {
|
|
ret = -1;
|
|
}
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(flags);
|
|
|
|
free_msg:
|
|
nlmsg_free(msg);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_set_channel_flag(void *priv, int mode, int chan, int flag,
|
|
unsigned char power_level,
|
|
unsigned char antenna_max)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int i802_set_regulatory_domain(void *priv, unsigned int rd)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
|
|
int cw_min, int cw_max, int burst_time)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static void nl80211_remove_iface(struct i802_driver_data *drv, int ifidx)
|
|
{
|
|
struct nl_msg *msg;
|
|
|
|
/* stop listening for EAPOL on this interface */
|
|
del_ifidx(drv, ifidx);
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
|
|
0, NL80211_CMD_DEL_INTERFACE, 0);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0)
|
|
nla_put_failure:
|
|
printf("Failed to remove interface.\n");
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
|
|
static int nl80211_create_iface(struct i802_driver_data *drv,
|
|
const char *ifname,
|
|
enum nl80211_iftype iftype,
|
|
const u8 *addr)
|
|
{
|
|
struct nl_msg *msg, *flags = NULL;
|
|
int ifidx;
|
|
struct ifreq ifreq;
|
|
struct iwreq iwr;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
return -1;
|
|
|
|
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
|
|
0, NL80211_CMD_NEW_INTERFACE, 0);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
|
|
if_nametoindex(drv->hapd->conf->iface));
|
|
NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
|
|
|
|
if (iftype == NL80211_IFTYPE_MONITOR) {
|
|
int err;
|
|
|
|
flags = nlmsg_alloc();
|
|
if (!flags)
|
|
goto nla_put_failure;
|
|
|
|
NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
|
|
|
|
err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
|
|
|
|
nlmsg_free(flags);
|
|
|
|
if (err)
|
|
goto nla_put_failure;
|
|
}
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0) {
|
|
nla_put_failure:
|
|
printf("Failed to create interface %s.\n", ifname);
|
|
nlmsg_free(msg);
|
|
return -1;
|
|
}
|
|
|
|
nlmsg_free(msg);
|
|
|
|
ifidx = if_nametoindex(ifname);
|
|
|
|
if (ifidx <= 0)
|
|
return -1;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
return ifidx;
|
|
}
|
|
|
|
|
|
static int i802_bss_add(void *priv, const char *ifname, const u8 *bssid)
|
|
{
|
|
int ifidx;
|
|
|
|
/*
|
|
* The kernel supports that when the low-level driver does,
|
|
* but we currently don't because we need per-BSS data that
|
|
* currently we can't handle easily.
|
|
*/
|
|
return -1;
|
|
|
|
ifidx = nl80211_create_iface(priv, ifname, NL80211_IFTYPE_AP, bssid);
|
|
if (ifidx < 0)
|
|
return -1;
|
|
if (hostapd_set_iface_flags(priv, ifname, 1)) {
|
|
nl80211_remove_iface(priv, ifidx);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_bss_remove(void *priv, const char *ifname)
|
|
{
|
|
nl80211_remove_iface(priv, if_nametoindex(ifname));
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_set_beacon(const char *iface, void *priv,
|
|
u8 *head, size_t head_len,
|
|
u8 *tail, size_t tail_len)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
u8 cmd = NL80211_CMD_NEW_BEACON;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
if (drv->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, if_nametoindex(iface));
|
|
NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, drv->beacon_int);
|
|
|
|
if (!drv->dtim_period)
|
|
drv->dtim_period = 2;
|
|
NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
drv->beacon_set = 1;
|
|
|
|
out:
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_del_beacon(struct i802_driver_data *drv)
|
|
{
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_set_ieee8021x(const char *ifname, void *priv, int enabled)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
|
|
/*
|
|
* FIXME: This needs to be per interface (BSS)
|
|
*/
|
|
drv->ieee802_1x_active = enabled;
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_set_privacy(const char *ifname, void *priv, int enabled)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct iwreq iwr;
|
|
|
|
memset(&iwr, 0, sizeof(iwr));
|
|
|
|
os_strlcpy(iwr.ifr_name, ifname, IFNAMSIZ);
|
|
iwr.u.param.flags = IW_AUTH_PRIVACY_INVOKED;
|
|
iwr.u.param.value = enabled;
|
|
|
|
ioctl(drv->ioctl_sock, SIOCSIWAUTH, &iwr);
|
|
|
|
/* ignore errors, the kernel/driver might not care */
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_set_internal_bridge(void *priv, int value)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int i802_set_beacon_int(void *priv, int value)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
drv->beacon_int = value;
|
|
|
|
if (!drv->beacon_set)
|
|
return 0;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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, if_nametoindex(drv->iface));
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, value);
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_set_dtim_period(const char *iface, void *priv, int value)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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, if_nametoindex(iface));
|
|
|
|
drv->dtim_period = value;
|
|
NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, drv->dtim_period);
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0)
|
|
goto out;
|
|
|
|
ret = 0;
|
|
|
|
out:
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int i802_set_cts_protect(void *priv, int value)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int i802_set_preamble(void *priv, int value)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int i802_set_short_slot_time(void *priv, int value)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
struct phy_info_arg {
|
|
u16 *num_modes;
|
|
struct hostapd_hw_modes *modes;
|
|
int error;
|
|
};
|
|
|
|
static int phy_info_handler(struct nl_msg *msg, void *arg)
|
|
{
|
|
struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
|
|
struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
|
|
struct phy_info_arg *phy_info = arg;
|
|
|
|
struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
|
|
|
|
struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
|
|
static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
|
|
[NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
|
|
[NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
|
|
[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
|
|
[NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
|
|
[NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
|
|
};
|
|
|
|
struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
|
|
static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
|
|
[NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
|
|
[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
|
|
};
|
|
|
|
struct nlattr *nl_band;
|
|
struct nlattr *nl_freq;
|
|
struct nlattr *nl_rate;
|
|
int rem_band, rem_freq, rem_rate;
|
|
struct hostapd_hw_modes *mode;
|
|
int idx, mode_is_set;
|
|
|
|
nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
|
|
genlmsg_attrlen(gnlh, 0), NULL);
|
|
|
|
if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
|
|
return NL_SKIP;
|
|
|
|
nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
|
|
mode = realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
|
|
if (!mode)
|
|
return NL_SKIP;
|
|
phy_info->modes = mode;
|
|
|
|
mode_is_set = 0;
|
|
|
|
mode = &phy_info->modes[*(phy_info->num_modes)];
|
|
memset(mode, 0, sizeof(*mode));
|
|
*(phy_info->num_modes) += 1;
|
|
|
|
nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
|
|
nla_len(nl_band), NULL);
|
|
|
|
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
|
|
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
|
|
nla_len(nl_freq), freq_policy);
|
|
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
|
|
continue;
|
|
mode->num_channels++;
|
|
}
|
|
|
|
mode->channels = calloc(mode->num_channels, sizeof(struct hostapd_channel_data));
|
|
if (!mode->channels)
|
|
return NL_SKIP;
|
|
|
|
idx = 0;
|
|
|
|
nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
|
|
nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
|
|
nla_len(nl_freq), freq_policy);
|
|
if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
|
|
continue;
|
|
|
|
mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
|
|
mode->channels[idx].flag |= HOSTAPD_CHAN_W_SCAN |
|
|
HOSTAPD_CHAN_W_ACTIVE_SCAN |
|
|
HOSTAPD_CHAN_W_IBSS;
|
|
|
|
if (!mode_is_set) {
|
|
/* crude heuristic */
|
|
if (mode->channels[idx].freq < 4000)
|
|
mode->mode = HOSTAPD_MODE_IEEE80211B;
|
|
else
|
|
mode->mode = HOSTAPD_MODE_IEEE80211A;
|
|
mode_is_set = 1;
|
|
}
|
|
|
|
/* crude heuristic */
|
|
if (mode->channels[idx].freq < 4000)
|
|
if (mode->channels[idx].freq == 2848)
|
|
mode->channels[idx].chan = 14;
|
|
else
|
|
mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
|
|
else
|
|
mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
|
|
|
|
if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
|
|
mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_SCAN;
|
|
if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
|
|
mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_ACTIVE_SCAN;
|
|
if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
|
|
mode->channels[idx].flag &= ~HOSTAPD_CHAN_W_IBSS;
|
|
idx++;
|
|
}
|
|
|
|
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
|
|
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
|
|
nla_len(nl_rate), rate_policy);
|
|
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
|
|
continue;
|
|
mode->num_rates++;
|
|
}
|
|
|
|
mode->rates = calloc(mode->num_rates, sizeof(struct hostapd_rate_data));
|
|
if (!mode->rates)
|
|
return NL_SKIP;
|
|
|
|
idx = 0;
|
|
|
|
nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
|
|
nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
|
|
nla_len(nl_rate), rate_policy);
|
|
if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
|
|
continue;
|
|
mode->rates[idx].rate = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
|
|
|
|
/* crude heuristic */
|
|
if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
|
|
mode->rates[idx].rate > 200)
|
|
mode->mode = HOSTAPD_MODE_IEEE80211G;
|
|
|
|
if (tb_rate[NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE])
|
|
mode->rates[idx].flags |= HOSTAPD_RATE_PREAMBLE2;
|
|
|
|
idx++;
|
|
}
|
|
}
|
|
|
|
phy_info->error = 0;
|
|
|
|
return NL_SKIP;
|
|
}
|
|
|
|
static struct hostapd_hw_modes *i802_get_hw_feature_data(void *priv,
|
|
u16 *num_modes,
|
|
u16 *flags)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int err = -1;
|
|
struct nl_cb *cb = NULL;
|
|
int finished = 0;
|
|
struct phy_info_arg result = {
|
|
.num_modes = num_modes,
|
|
.modes = NULL,
|
|
.error = 1,
|
|
};
|
|
|
|
*num_modes = 0;
|
|
*flags = 0;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
return NULL;
|
|
|
|
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
|
|
0, NL80211_CMD_GET_WIPHY, 0);
|
|
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->iface));
|
|
|
|
cb = nl_cb_clone(drv->nl_cb);
|
|
if (!cb)
|
|
goto out;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
|
|
goto out;
|
|
|
|
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, phy_info_handler, &result);
|
|
nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
|
|
|
|
err = nl_recvmsgs(drv->nl_handle, cb);
|
|
|
|
if (!finished)
|
|
err = nl_wait_for_ack(drv->nl_handle);
|
|
|
|
if (err < 0 || result.error) {
|
|
hostapd_free_hw_features(result.modes, *num_modes);
|
|
result.modes = NULL;
|
|
}
|
|
|
|
out:
|
|
nl_cb_put(cb);
|
|
nla_put_failure:
|
|
if (err)
|
|
fprintf(stderr, "failed to get information: %d\n", err);
|
|
nlmsg_free(msg);
|
|
return result.modes;
|
|
}
|
|
|
|
|
|
static int i802_set_sta_vlan(void *priv, const u8 *addr,
|
|
const char *ifname, int vlan_id)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
struct nl_msg *msg;
|
|
int ret = -1;
|
|
|
|
msg = nlmsg_alloc();
|
|
if (!msg)
|
|
goto out;
|
|
|
|
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->iface));
|
|
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
|
|
if_nametoindex(ifname));
|
|
|
|
ret = 0;
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
(errno = nl_wait_for_ack(drv->nl_handle) < 0)) {
|
|
ret = -1;
|
|
}
|
|
|
|
nla_put_failure:
|
|
nlmsg_free(msg);
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void handle_unknown_sta(struct hostapd_data *hapd, u8 *ta)
|
|
{
|
|
struct sta_info *sta;
|
|
|
|
sta = ap_get_sta(hapd, ta);
|
|
if (!sta || !(sta->flags & WLAN_STA_ASSOC)) {
|
|
printf("Data/PS-poll frame from not associated STA "
|
|
MACSTR "\n", MAC2STR(ta));
|
|
if (sta && (sta->flags & WLAN_STA_AUTH))
|
|
hostapd_sta_disassoc(
|
|
hapd, ta,
|
|
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
|
|
else
|
|
hostapd_sta_deauth(
|
|
hapd, ta,
|
|
WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_tx_callback(struct hostapd_data *hapd, u8 *buf, size_t len,
|
|
int ok)
|
|
{
|
|
struct ieee80211_hdr *hdr;
|
|
u16 fc, type, stype;
|
|
struct sta_info *sta;
|
|
|
|
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_MGMT:
|
|
wpa_printf(MSG_DEBUG, "MGMT (TX callback) %s",
|
|
ok ? "ACK" : "fail");
|
|
ieee802_11_mgmt_cb(hapd, buf, len, stype, ok);
|
|
break;
|
|
case WLAN_FC_TYPE_CTRL:
|
|
wpa_printf(MSG_DEBUG, "CTRL (TX callback) %s",
|
|
ok ? "ACK" : "fail");
|
|
break;
|
|
case WLAN_FC_TYPE_DATA:
|
|
wpa_printf(MSG_DEBUG, "DATA (TX callback) %s",
|
|
ok ? "ACK" : "fail");
|
|
sta = ap_get_sta(hapd, hdr->addr1);
|
|
if (sta && sta->flags & WLAN_STA_PENDING_POLL) {
|
|
wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
|
|
"activity poll", MAC2STR(sta->addr),
|
|
ok ? "ACKed" : "did not ACK");
|
|
if (ok)
|
|
sta->flags &= ~WLAN_STA_PENDING_POLL;
|
|
}
|
|
if (sta)
|
|
ieee802_1x_tx_status(hapd, sta, buf, len, ok);
|
|
break;
|
|
default:
|
|
printf("unknown TX callback frame type %d\n", type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_frame(struct hostapd_iface *iface, u8 *buf, size_t len,
|
|
struct hostapd_frame_info *hfi,
|
|
enum ieee80211_msg_type msg_type)
|
|
{
|
|
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;
|
|
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++)
|
|
ieee802_11_mgmt(iface->bss[i], buf, data_len,
|
|
stype, hfi);
|
|
} else
|
|
ieee802_11_mgmt(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");
|
|
handle_unknown_sta(hapd, hdr->addr2);
|
|
break;
|
|
case WLAN_FC_TYPE_DATA:
|
|
wpa_printf(MSG_DEBUG, "DATA");
|
|
handle_unknown_sta(hapd, hdr->addr2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
|
|
{
|
|
struct i802_driver_data *drv = eloop_ctx;
|
|
struct hostapd_data *hapd = drv->hapd;
|
|
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))
|
|
ieee802_1x_receive(hapd, lladdr.sll_addr, buf, len);
|
|
}
|
|
|
|
|
|
static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
|
|
{
|
|
struct i802_driver_data *drv = eloop_ctx;
|
|
int len;
|
|
unsigned char buf[3000];
|
|
struct hostapd_data *hapd = drv->hapd;
|
|
struct ieee80211_radiotap_iterator iter;
|
|
int ret;
|
|
struct hostapd_frame_info hfi;
|
|
int injected = 0, failed = 0, msg_type, rxflags = 0;
|
|
|
|
len = recv(sock, buf, sizeof(buf), 0);
|
|
if (len < 0) {
|
|
perror("recv");
|
|
return;
|
|
}
|
|
|
|
if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
|
|
printf("received invalid radiotap frame\n");
|
|
return;
|
|
}
|
|
|
|
memset(&hfi, 0, sizeof(hfi));
|
|
|
|
while (1) {
|
|
ret = ieee80211_radiotap_iterator_next(&iter);
|
|
if (ret == -ENOENT)
|
|
break;
|
|
if (ret) {
|
|
printf("received invalid radiotap frame (%d)\n", ret);
|
|
return;
|
|
}
|
|
switch (iter.this_arg_index) {
|
|
case IEEE80211_RADIOTAP_FLAGS:
|
|
if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
|
|
len -= 4;
|
|
break;
|
|
case IEEE80211_RADIOTAP_RX_FLAGS:
|
|
rxflags = 1;
|
|
break;
|
|
case IEEE80211_RADIOTAP_TX_FLAGS:
|
|
injected = 1;
|
|
failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
|
|
IEEE80211_RADIOTAP_F_TX_FAIL;
|
|
break;
|
|
case IEEE80211_RADIOTAP_DATA_RETRIES:
|
|
break;
|
|
case IEEE80211_RADIOTAP_CHANNEL:
|
|
/* TODO convert from freq/flags to channel number
|
|
hfi.channel = XXX;
|
|
hfi.phytype = XXX;
|
|
*/
|
|
break;
|
|
case IEEE80211_RADIOTAP_RATE:
|
|
hfi.datarate = *iter.this_arg * 5;
|
|
break;
|
|
case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
|
|
hfi.ssi_signal = *iter.this_arg;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (rxflags && injected)
|
|
return;
|
|
|
|
if (!injected)
|
|
msg_type = ieee80211_msg_normal;
|
|
else if (failed)
|
|
msg_type = ieee80211_msg_tx_callback_fail;
|
|
else
|
|
msg_type = ieee80211_msg_tx_callback_ack;
|
|
|
|
handle_frame(hapd->iface, buf + iter.max_length,
|
|
len - iter.max_length, &hfi, msg_type);
|
|
}
|
|
|
|
|
|
static int nl80211_create_monitor_interface(struct i802_driver_data *drv)
|
|
{
|
|
char buf[IFNAMSIZ];
|
|
struct sockaddr_ll ll;
|
|
int optval;
|
|
socklen_t optlen;
|
|
|
|
snprintf(buf, IFNAMSIZ, "mon.%s", drv->iface);
|
|
buf[IFNAMSIZ - 1] = '\0';
|
|
|
|
drv->monitor_ifidx =
|
|
nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
|
|
|
|
if (drv->monitor_ifidx < 0)
|
|
return -1;
|
|
|
|
if (hostapd_set_iface_flags(drv, buf, 1))
|
|
goto error;
|
|
|
|
memset(&ll, 0, sizeof(ll));
|
|
ll.sll_family = AF_PACKET;
|
|
ll.sll_ifindex = drv->monitor_ifidx;
|
|
drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
|
|
if (drv->monitor_sock < 0) {
|
|
perror("socket[PF_PACKET,SOCK_RAW]");
|
|
goto error;
|
|
}
|
|
|
|
if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
|
|
sizeof(ll)) < 0) {
|
|
perror("monitor socket bind");
|
|
goto error;
|
|
}
|
|
|
|
optlen = sizeof(optval);
|
|
optval = 20;
|
|
if (setsockopt
|
|
(drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
|
|
perror("Failed to set socket priority");
|
|
goto error;
|
|
}
|
|
|
|
if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
|
|
drv, NULL)) {
|
|
printf("Could not register monitor read socket\n");
|
|
goto error;
|
|
}
|
|
|
|
return 0;
|
|
error:
|
|
nl80211_remove_iface(drv, drv->monitor_ifidx);
|
|
return -1;
|
|
}
|
|
|
|
|
|
static int nl80211_set_master_mode(struct i802_driver_data *drv,
|
|
const char *ifname)
|
|
{
|
|
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_SET_INTERFACE, 0);
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
|
|
if_nametoindex(ifname));
|
|
NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, NL80211_IFTYPE_AP);
|
|
|
|
if (nl_send_auto_complete(drv->nl_handle, msg) < 0 ||
|
|
nl_wait_for_ack(drv->nl_handle) < 0) {
|
|
nla_put_failure:
|
|
wpa_printf(MSG_ERROR, "Failed to set interface %s to master "
|
|
"mode.", ifname);
|
|
nlmsg_free(msg);
|
|
return -1;
|
|
}
|
|
|
|
nlmsg_free(msg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_init_sockets(struct i802_driver_data *drv, const u8 *bssid)
|
|
{
|
|
struct ifreq ifr;
|
|
struct sockaddr_ll addr;
|
|
|
|
drv->ioctl_sock = -1;
|
|
|
|
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->iface));
|
|
|
|
if (hostapd_set_iface_flags(drv, drv->iface, 0))
|
|
return -1;
|
|
|
|
if (bssid) {
|
|
os_strlcpy(ifr.ifr_name, drv->iface, 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;
|
|
}
|
|
|
|
drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
|
|
if (!drv->nl_cache) {
|
|
printf("Failed to allocate generic netlink cache.\n");
|
|
return -1;
|
|
}
|
|
|
|
drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
|
|
if (!drv->nl80211) {
|
|
printf("nl80211 not found.\n");
|
|
return -1;
|
|
}
|
|
|
|
/* Initialise a monitor interface */
|
|
if (nl80211_create_monitor_interface(drv))
|
|
return -1;
|
|
|
|
if (nl80211_set_master_mode(drv, drv->iface))
|
|
return -1;
|
|
|
|
if (hostapd_set_iface_flags(drv, drv->iface, 1))
|
|
return -1;
|
|
|
|
memset(&addr, 0, sizeof(addr));
|
|
addr.sll_family = AF_PACKET;
|
|
addr.sll_ifindex = ifr.ifr_ifindex;
|
|
wpa_printf(MSG_DEBUG, "Opening raw packet socket for ifindex %d",
|
|
addr.sll_ifindex);
|
|
|
|
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)");
|
|
return -1;
|
|
}
|
|
|
|
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->iface, sizeof(ifr.ifr_name));
|
|
if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr) != 0) {
|
|
perror("ioctl(SIOCGIFHWADDR)");
|
|
return -1;
|
|
}
|
|
|
|
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
|
|
printf("Invalid HW-addr family 0x%04x\n",
|
|
ifr.ifr_hwaddr.sa_family);
|
|
return -1;
|
|
}
|
|
memcpy(drv->hapd->own_addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
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 void
|
|
hostapd_wireless_event_wireless_custom(struct i802_driver_data *drv,
|
|
char *custom)
|
|
{
|
|
wpa_printf(MSG_DEBUG, "Custom wireless event: '%s'", custom);
|
|
|
|
if (strncmp(custom, "MLME-MICHAELMICFAILURE.indication", 33) == 0) {
|
|
char *pos;
|
|
u8 addr[ETH_ALEN];
|
|
pos = strstr(custom, "addr=");
|
|
if (pos == NULL) {
|
|
wpa_printf(MSG_DEBUG,
|
|
"MLME-MICHAELMICFAILURE.indication "
|
|
"without sender address ignored");
|
|
return;
|
|
}
|
|
pos += 5;
|
|
if (hwaddr_aton(pos, addr) == 0) {
|
|
ieee80211_michael_mic_failure(drv->hapd, addr, 1);
|
|
} else {
|
|
wpa_printf(MSG_DEBUG,
|
|
"MLME-MICHAELMICFAILURE.indication "
|
|
"with invalid MAC address");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void hostapd_wireless_event_wireless(struct i802_driver_data *drv,
|
|
char *data, int len)
|
|
{
|
|
struct iw_event iwe_buf, *iwe = &iwe_buf;
|
|
char *pos, *end, *custom, *buf;
|
|
|
|
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. */
|
|
memcpy(&iwe_buf, pos, IW_EV_LCP_LEN);
|
|
wpa_printf(MSG_DEBUG, "Wireless event: cmd=0x%x len=%d",
|
|
iwe->cmd, iwe->len);
|
|
if (iwe->len <= IW_EV_LCP_LEN)
|
|
return;
|
|
|
|
custom = pos + IW_EV_POINT_LEN;
|
|
if (drv->we_version > 18 &&
|
|
(iwe->cmd == IWEVMICHAELMICFAILURE ||
|
|
iwe->cmd == IWEVCUSTOM)) {
|
|
/* WE-19 removed the pointer from struct iw_point */
|
|
char *dpos = (char *) &iwe_buf.u.data.length;
|
|
int dlen = dpos - (char *) &iwe_buf;
|
|
memcpy(dpos, pos + IW_EV_LCP_LEN,
|
|
sizeof(struct iw_event) - dlen);
|
|
} else {
|
|
memcpy(&iwe_buf, pos, sizeof(struct iw_event));
|
|
custom += IW_EV_POINT_OFF;
|
|
}
|
|
|
|
switch (iwe->cmd) {
|
|
case IWEVCUSTOM:
|
|
if (custom + iwe->u.data.length > end)
|
|
return;
|
|
buf = malloc(iwe->u.data.length + 1);
|
|
if (buf == NULL)
|
|
return;
|
|
memcpy(buf, custom, iwe->u.data.length);
|
|
buf[iwe->u.data.length] = '\0';
|
|
hostapd_wireless_event_wireless_custom(drv, buf);
|
|
free(buf);
|
|
break;
|
|
}
|
|
|
|
pos += iwe->len;
|
|
}
|
|
}
|
|
|
|
|
|
static void hostapd_wireless_event_rtm_newlink(struct i802_driver_data *drv,
|
|
struct nlmsghdr *h, int len)
|
|
{
|
|
struct ifinfomsg *ifi;
|
|
int attrlen, nlmsg_len, rta_len;
|
|
struct rtattr *attr;
|
|
|
|
if (len < (int) sizeof(*ifi))
|
|
return;
|
|
|
|
ifi = NLMSG_DATA(h);
|
|
|
|
/* TODO: use ifi->ifi_index to filter out wireless events from other
|
|
* interfaces */
|
|
|
|
nlmsg_len = NLMSG_ALIGN(sizeof(struct ifinfomsg));
|
|
|
|
attrlen = h->nlmsg_len - nlmsg_len;
|
|
if (attrlen < 0)
|
|
return;
|
|
|
|
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) {
|
|
hostapd_wireless_event_wireless(
|
|
drv, ((char *) attr) + rta_len,
|
|
attr->rta_len - rta_len);
|
|
}
|
|
attr = RTA_NEXT(attr, attrlen);
|
|
}
|
|
}
|
|
|
|
|
|
static void hostapd_wireless_event_receive(int sock, void *eloop_ctx,
|
|
void *sock_ctx)
|
|
{
|
|
char buf[256];
|
|
int left;
|
|
struct sockaddr_nl from;
|
|
socklen_t fromlen;
|
|
struct nlmsghdr *h;
|
|
struct i802_driver_data *drv = eloop_ctx;
|
|
|
|
fromlen = sizeof(from);
|
|
left = recvfrom(sock, buf, sizeof(buf), MSG_DONTWAIT,
|
|
(struct sockaddr *) &from, &fromlen);
|
|
if (left < 0) {
|
|
if (errno != EINTR && errno != EAGAIN)
|
|
perror("recvfrom(netlink)");
|
|
return;
|
|
}
|
|
|
|
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) {
|
|
printf("Malformed netlink message: "
|
|
"len=%d left=%d plen=%d\n",
|
|
len, left, plen);
|
|
break;
|
|
}
|
|
|
|
switch (h->nlmsg_type) {
|
|
case RTM_NEWLINK:
|
|
hostapd_wireless_event_rtm_newlink(drv, h, plen);
|
|
break;
|
|
}
|
|
|
|
len = NLMSG_ALIGN(len);
|
|
left -= len;
|
|
h = (struct nlmsghdr *) ((char *) h + len);
|
|
}
|
|
|
|
if (left > 0) {
|
|
printf("%d extra bytes in the end of netlink message\n", left);
|
|
}
|
|
}
|
|
|
|
|
|
static int hostap_get_we_version(struct i802_driver_data *drv)
|
|
{
|
|
struct iw_range *range;
|
|
struct iwreq iwr;
|
|
int minlen;
|
|
size_t buflen;
|
|
|
|
drv->we_version = 0;
|
|
|
|
/*
|
|
* Use larger buffer than struct iw_range in order to allow the
|
|
* structure to grow in the future.
|
|
*/
|
|
buflen = sizeof(struct iw_range) + 500;
|
|
range = os_zalloc(buflen);
|
|
if (range == NULL)
|
|
return -1;
|
|
|
|
memset(&iwr, 0, sizeof(iwr));
|
|
os_strlcpy(iwr.ifr_name, drv->iface, IFNAMSIZ);
|
|
iwr.u.data.pointer = (caddr_t) range;
|
|
iwr.u.data.length = buflen;
|
|
|
|
minlen = ((char *) &range->enc_capa) - (char *) range +
|
|
sizeof(range->enc_capa);
|
|
|
|
if (ioctl(drv->ioctl_sock, SIOCGIWRANGE, &iwr) < 0) {
|
|
perror("ioctl[SIOCGIWRANGE]");
|
|
free(range);
|
|
return -1;
|
|
} else if (iwr.u.data.length >= minlen &&
|
|
range->we_version_compiled >= 18) {
|
|
wpa_printf(MSG_DEBUG, "SIOCGIWRANGE: WE(compiled)=%d "
|
|
"WE(source)=%d enc_capa=0x%x",
|
|
range->we_version_compiled,
|
|
range->we_version_source,
|
|
range->enc_capa);
|
|
drv->we_version = range->we_version_compiled;
|
|
}
|
|
|
|
free(range);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int i802_wireless_event_init(void *priv)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
int s;
|
|
struct sockaddr_nl local;
|
|
|
|
hostap_get_we_version(drv);
|
|
|
|
drv->wext_sock = -1;
|
|
|
|
s = socket(PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
|
|
if (s < 0) {
|
|
perror("socket(PF_NETLINK,SOCK_RAW,NETLINK_ROUTE)");
|
|
return -1;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
eloop_register_read_sock(s, hostapd_wireless_event_receive, drv,
|
|
NULL);
|
|
drv->wext_sock = s;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void i802_wireless_event_deinit(void *priv)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
if (drv->wext_sock < 0)
|
|
return;
|
|
eloop_unregister_read_sock(drv->wext_sock);
|
|
close(drv->wext_sock);
|
|
}
|
|
|
|
|
|
static int i802_sta_deauth(void *priv, const u8 *addr, int reason)
|
|
{
|
|
struct i802_driver_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 i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
|
|
sizeof(mgmt.u.deauth), 0);
|
|
}
|
|
|
|
|
|
static int i802_sta_disassoc(void *priv, const u8 *addr, int reason)
|
|
{
|
|
struct i802_driver_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 i802_send_mgmt_frame(drv, &mgmt, IEEE80211_HDRLEN +
|
|
sizeof(mgmt.u.disassoc), 0);
|
|
}
|
|
|
|
|
|
static void *i802_init_bssid(struct hostapd_data *hapd, const u8 *bssid)
|
|
{
|
|
struct i802_driver_data *drv;
|
|
|
|
drv = os_zalloc(sizeof(struct i802_driver_data));
|
|
if (drv == NULL) {
|
|
printf("Could not allocate memory for i802 driver data\n");
|
|
return NULL;
|
|
}
|
|
|
|
drv->hapd = hapd;
|
|
memcpy(drv->iface, hapd->conf->iface, sizeof(drv->iface));
|
|
|
|
drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
|
|
drv->if_indices = drv->default_if_indices;
|
|
drv->bridge = if_nametoindex(hapd->conf->bridge);
|
|
|
|
if (i802_init_sockets(drv, bssid))
|
|
goto failed;
|
|
|
|
return drv;
|
|
|
|
failed:
|
|
free(drv);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static void *i802_init(struct hostapd_data *hapd)
|
|
{
|
|
return i802_init_bssid(hapd, NULL);
|
|
}
|
|
|
|
|
|
static void i802_deinit(void *priv)
|
|
{
|
|
struct i802_driver_data *drv = priv;
|
|
|
|
i802_del_beacon(drv);
|
|
|
|
/* remove monitor interface */
|
|
nl80211_remove_iface(drv, drv->monitor_ifidx);
|
|
|
|
(void) hostapd_set_iface_flags(drv, drv->iface, 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);
|
|
}
|
|
|
|
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);
|
|
|
|
free(drv);
|
|
}
|
|
|
|
|
|
const struct wpa_driver_ops wpa_driver_nl80211_ops = {
|
|
.name = "nl80211",
|
|
.init = i802_init,
|
|
.init_bssid = i802_init_bssid,
|
|
.deinit = i802_deinit,
|
|
.wireless_event_init = i802_wireless_event_init,
|
|
.wireless_event_deinit = i802_wireless_event_deinit,
|
|
.set_ieee8021x = i802_set_ieee8021x,
|
|
.set_privacy = i802_set_privacy,
|
|
.set_encryption = i802_set_encryption,
|
|
.get_seqnum = i802_get_seqnum,
|
|
.flush = i802_flush,
|
|
.read_sta_data = i802_read_sta_data,
|
|
.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,
|
|
.set_ssid = i802_set_ssid,
|
|
.send_mgmt_frame = i802_send_mgmt_frame,
|
|
.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,
|
|
.get_rts = i802_get_rts,
|
|
.set_frag = i802_set_frag,
|
|
.get_frag = i802_get_frag,
|
|
.set_retry = i802_set_retry,
|
|
.get_retry = i802_get_retry,
|
|
.set_rate_sets = i802_set_rate_sets,
|
|
.set_channel_flag = i802_set_channel_flag,
|
|
.set_regulatory_domain = i802_set_regulatory_domain,
|
|
.set_beacon = i802_set_beacon,
|
|
.set_internal_bridge = i802_set_internal_bridge,
|
|
.set_beacon_int = i802_set_beacon_int,
|
|
.set_dtim_period = i802_set_dtim_period,
|
|
.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,
|
|
.get_hw_feature_data = i802_get_hw_feature_data,
|
|
.set_sta_vlan = i802_set_sta_vlan,
|
|
};
|