nl80211: Share common interface processing code
This commit is contained in:
Jouni Malinen
Jouni Malinen
parent
072ad14cc4
commit
2135f224db
1 changed files with 85 additions and 286 deletions
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@ -166,6 +166,8 @@ static void handle_frame(struct wpa_driver_nl80211_data *drv,
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u8 *buf, size_t len,
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struct hostapd_frame_info *hfi,
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enum ieee80211_msg_type msg_type);
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static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
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static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
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#endif /* HOSTAPD */
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@ -862,65 +864,43 @@ static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
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}
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static int wpa_driver_nl80211_get_ifflags_ifname(struct wpa_driver_nl80211_data *drv,
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const char *ifname, int *flags)
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static int hostapd_set_iface_flags(struct wpa_driver_nl80211_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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os_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, (caddr_t) &ifr) < 0) {
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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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ifname);
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return -1;
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}
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*flags = ifr.ifr_flags & 0xffff;
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return 0;
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}
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if (dev_up) {
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if (ifr.ifr_flags & IFF_UP)
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return 0;
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ifr.ifr_flags |= IFF_UP;
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} else {
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if (!(ifr.ifr_flags & IFF_UP))
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return 0;
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ifr.ifr_flags &= ~IFF_UP;
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}
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/**
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* wpa_driver_nl80211_get_ifflags - Get interface flags (SIOCGIFFLAGS)
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* @drv: driver_nl80211 private data
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* @flags: Pointer to returned flags value
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* Returns: 0 on success, -1 on failure
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*/
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static int wpa_driver_nl80211_get_ifflags(struct wpa_driver_nl80211_data *drv,
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int *flags)
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{
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return wpa_driver_nl80211_get_ifflags_ifname(drv, drv->ifname, flags);
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}
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static int wpa_driver_nl80211_set_ifflags_ifname(
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struct wpa_driver_nl80211_data *drv,
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const char *ifname, int flags)
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{
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struct ifreq ifr;
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os_memset(&ifr, 0, sizeof(ifr));
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os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
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ifr.ifr_flags = flags & 0xffff;
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if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
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perror("SIOCSIFFLAGS");
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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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/**
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* wpa_driver_nl80211_set_ifflags - Set interface flags (SIOCSIFFLAGS)
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* @drv: driver_nl80211 private data
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* @flags: New value for flags
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* Returns: 0 on success, -1 on failure
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*/
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static int wpa_driver_nl80211_set_ifflags(struct wpa_driver_nl80211_data *drv,
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int flags)
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{
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return wpa_driver_nl80211_set_ifflags_ifname(drv, drv->ifname, flags);
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}
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/**
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* wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
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* @priv: driver_nl80211 private data
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@ -1172,8 +1152,6 @@ err1:
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static int
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wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
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{
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int flags;
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drv->ifindex = if_nametoindex(drv->ifname);
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if (wpa_driver_nl80211_set_mode(drv, 0) < 0) {
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@ -1181,18 +1159,11 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
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"use managed mode");
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}
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if (wpa_driver_nl80211_get_ifflags(drv, &flags) != 0) {
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wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
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drv->ifname);
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if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
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wpa_printf(MSG_ERROR, "Could not set interface '%s' "
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"UP", drv->ifname);
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return -1;
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}
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if (!(flags & IFF_UP)) {
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if (wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP) != 0) {
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wpa_printf(MSG_ERROR, "Could not set interface '%s' "
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"UP", drv->ifname);
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return -1;
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}
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}
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wpa_driver_nl80211_capa(drv);
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@ -1212,7 +1183,6 @@ wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
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static void wpa_driver_nl80211_deinit(void *priv)
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{
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struct wpa_driver_nl80211_data *drv = priv;
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int flags;
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#ifdef CONFIG_AP
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if (drv->monitor_ifidx >= 0)
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@ -1231,8 +1201,7 @@ static void wpa_driver_nl80211_deinit(void *priv)
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eloop_unregister_read_sock(drv->link_event_sock);
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if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0)
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(void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
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hostapd_set_iface_flags(drv, drv->ifname, 0);
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wpa_driver_nl80211_set_mode(drv, 0);
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close(drv->link_event_sock);
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@ -2149,12 +2118,20 @@ nla_put_failure:
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return -1;
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}
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#endif /* CONFIG_AP */
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#if defined(CONFIG_AP) || defined(HOSTAPD)
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static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
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int ifidx)
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{
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struct nl_msg *msg;
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#ifdef HOSTAPD
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/* stop listening for EAPOL on this interface */
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del_ifidx(drv, ifidx);
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#endif /* HOSTAPD */
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msg = nlmsg_alloc();
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if (!msg)
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goto nla_put_failure;
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@ -2172,11 +2149,16 @@ static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
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static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
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const char *ifname, enum nl80211_iftype iftype)
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const char *ifname, enum nl80211_iftype iftype,
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const u8 *addr)
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{
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struct nl_msg *msg, *flags = NULL;
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int ifidx;
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int ret = -ENOBUFS;
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#ifdef HOSTAPD
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struct ifreq ifreq;
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struct iwreq iwr;
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#endif /* HOSTAPD */
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msg = nlmsg_alloc();
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if (!msg)
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@ -2218,9 +2200,43 @@ static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
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if (ifidx <= 0)
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return -1;
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#ifdef HOSTAPD
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/* start listening for EAPOL on this interface */
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add_ifidx(drv, ifidx);
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if (addr) {
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switch (iftype) {
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case NL80211_IFTYPE_AP:
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os_strlcpy(ifreq.ifr_name, ifname, IFNAMSIZ);
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memcpy(ifreq.ifr_hwaddr.sa_data, addr, ETH_ALEN);
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ifreq.ifr_hwaddr.sa_family = ARPHRD_ETHER;
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if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifreq)) {
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nl80211_remove_iface(drv, ifidx);
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return -1;
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}
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break;
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case NL80211_IFTYPE_WDS:
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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.addr.sa_family = ARPHRD_ETHER;
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memcpy(iwr.u.addr.sa_data, addr, ETH_ALEN);
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if (ioctl(drv->ioctl_sock, SIOCSIWAP, &iwr))
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return -1;
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break;
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default:
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/* nothing */
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break;
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}
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}
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#endif /* HOSTAPD */
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return ifidx;
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}
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#endif /* CONFIG_AP || HOSTAPD */
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#ifdef CONFIG_AP
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void ap_tx_status(void *ctx, const u8 *addr,
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const u8 *buf, size_t len, int ack);
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@ -2577,9 +2593,6 @@ static int add_monitor_filter(int s)
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return 0;
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}
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#endif /* CONFIG_AP || HOSTAPD */
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#ifdef CONFIG_AP
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static int
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nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
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@ -2588,31 +2601,18 @@ nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
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struct sockaddr_ll ll;
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int optval;
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socklen_t optlen;
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int flags;
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snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
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buf[IFNAMSIZ - 1] = '\0';
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drv->monitor_ifidx =
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nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR);
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nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL);
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if (drv->monitor_ifidx < 0)
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return -1;
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if (wpa_driver_nl80211_get_ifflags_ifname(drv, buf, &flags) != 0) {
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wpa_printf(MSG_ERROR, "Could not get interface '%s' flags",
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buf);
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if (hostapd_set_iface_flags(drv, buf, 1))
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goto error;
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}
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if (!(flags & IFF_UP)) {
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if (wpa_driver_nl80211_set_ifflags_ifname(drv, buf,
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flags | IFF_UP) != 0)
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{
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wpa_printf(MSG_ERROR, "Could not set interface '%s' "
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"UP", buf);
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goto error;
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}
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}
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memset(&ll, 0, sizeof(ll));
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ll.sll_family = AF_PACKET;
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@ -2629,8 +2629,7 @@ nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
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/* This works, but will cost in performance. */
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}
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if (bind(drv->monitor_sock, (struct sockaddr *) &ll,
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sizeof(ll)) < 0) {
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if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
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perror("monitor socket bind");
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goto error;
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}
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@ -2655,6 +2654,9 @@ nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
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return -1;
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}
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#endif /* CONFIG_AP || HOSTAPD */
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#ifdef CONFIG_AP
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static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
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struct wpa_driver_associate_params *params)
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@ -2755,7 +2757,7 @@ nla_put_failure:
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static int wpa_driver_nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
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int mode)
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{
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int ret = -1, flags;
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int ret = -1;
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struct nl_msg *msg;
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int nlmode;
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@ -2798,9 +2800,7 @@ try_again:
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* take the device down, try to set the mode again, and bring the
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* device back up.
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*/
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if (wpa_driver_nl80211_get_ifflags(drv, &flags) == 0) {
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(void) wpa_driver_nl80211_set_ifflags(drv, flags & ~IFF_UP);
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if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
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/* Try to set the mode again while the interface is down */
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msg = nlmsg_alloc();
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if (!msg)
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@ -2817,11 +2817,8 @@ try_again:
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drv->ifname, ret, strerror(-ret));
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}
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/* Ignore return value of get_ifflags to ensure that the device
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* is always up like it was before this function was called.
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*/
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(void) wpa_driver_nl80211_get_ifflags(drv, &flags);
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(void) wpa_driver_nl80211_set_ifflags(drv, flags | IFF_UP);
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if (hostapd_set_iface_flags(drv, drv->ifname, 1))
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ret = -1;
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}
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return ret;
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@ -2934,38 +2931,6 @@ static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
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}
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static int hostapd_set_iface_flags(struct wpa_driver_nl80211_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->ifname);
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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_key(const char *iface, void *priv, wpa_alg alg,
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const u8 *addr, int key_idx, int set_tx, const u8 *seq,
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size_t seq_len, const u8 *key, size_t key_len)
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@ -3491,111 +3456,6 @@ static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
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}
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static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv, int ifidx)
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{
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struct nl_msg *msg;
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/* stop listening for EAPOL on this interface */
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del_ifidx(drv, ifidx);
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msg = nlmsg_alloc();
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if (!msg)
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goto nla_put_failure;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_DEL_INTERFACE, 0);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
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if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
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return;
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nla_put_failure:
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printf("Failed to remove interface.\n");
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}
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static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
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const char *ifname,
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enum nl80211_iftype iftype,
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const u8 *addr)
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{
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struct nl_msg *msg, *flags = NULL;
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int ifidx;
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struct ifreq ifreq;
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struct iwreq iwr;
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int ret = -ENOBUFS;
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msg = nlmsg_alloc();
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if (!msg)
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return -1;
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genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
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0, NL80211_CMD_NEW_INTERFACE, 0);
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NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
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NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
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NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
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if (iftype == NL80211_IFTYPE_MONITOR) {
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int err;
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flags = nlmsg_alloc();
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if (!flags)
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goto nla_put_failure;
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NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
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err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
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nlmsg_free(flags);
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if (err)
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goto nla_put_failure;
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}
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ret = send_and_recv_msgs(drv, msg, NULL, NULL);
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if (ret) {
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nla_put_failure:
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printf("Failed to create interface %s.\n", ifname);
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return ret;
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}
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ifidx = if_nametoindex(ifname);
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if (ifidx <= 0)
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return -1;
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/* start listening for EAPOL on this interface */
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add_ifidx(drv, ifidx);
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if (addr) {
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switch (iftype) {
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case NL80211_IFTYPE_AP:
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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)
|
||||
{
|
||||
struct wpa_driver_nl80211_data *drv = priv;
|
||||
|
|
@ -3983,67 +3843,6 @@ static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
|
|||
}
|
||||
|
||||
|
||||
static int nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
|
||||
{
|
||||
char buf[IFNAMSIZ];
|
||||
struct sockaddr_ll ll;
|
||||
int optval;
|
||||
socklen_t optlen;
|
||||
|
||||
snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
|
||||
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 (add_monitor_filter(drv->monitor_sock)) {
|
||||
wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
|
||||
"interface; do filtering in user space");
|
||||
/* This works, but will cost in performance. */
|
||||
}
|
||||
|
||||
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_mode(struct wpa_driver_nl80211_data *drv, const char *ifname,
|
||||
int mode)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in a new issue