4853 lines
118 KiB
C
4853 lines
118 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdlib.h>
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#include <alloca.h>
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#include <stdio.h>
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#include <linux/rtnetlink.h>
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#include <net/if_arp.h>
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#include <linux/if.h>
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#include <linux/if_packet.h>
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#include <linux/if_ether.h>
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#include <arpa/inet.h>
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#include <linux/filter.h>
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#include <sys/socket.h>
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#include <errno.h>
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#include <ell/ell.h>
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#include "linux/nl80211.h"
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#include "src/iwd.h"
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#include "src/wiphy.h"
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#include "src/ie.h"
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#include "src/mpdu.h"
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#include "src/eapol.h"
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#include "src/handshake.h"
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#include "src/crypto.h"
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#include "src/device.h"
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#include "src/scan.h"
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#include "src/netdev.h"
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#include "src/wscutil.h"
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#include "src/ft.h"
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#include "src/util.h"
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#include "src/watchlist.h"
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#include "src/sae.h"
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#include "src/nl80211util.h"
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#include "src/nl80211cmd.h"
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#include "src/owe.h"
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#include "src/fils.h"
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#include "src/auth-proto.h"
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#include "src/rtnlutil.h"
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#ifndef ENOTSUPP
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#define ENOTSUPP 524
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#endif
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static uint32_t unicast_watch;
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struct netdev_handshake_state {
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struct handshake_state super;
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uint32_t pairwise_new_key_cmd_id;
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uint32_t group_new_key_cmd_id;
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uint32_t group_management_new_key_cmd_id;
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uint32_t set_station_cmd_id;
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bool ptk_installed;
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bool gtk_installed;
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bool igtk_installed;
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bool complete;
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struct netdev *netdev;
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};
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struct netdev {
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uint32_t index;
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uint64_t wdev_id;
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char name[IFNAMSIZ];
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uint32_t type;
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uint8_t addr[ETH_ALEN];
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struct device *device;
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struct wiphy *wiphy;
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unsigned int ifi_flags;
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uint32_t frequency;
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uint32_t prev_frequency;
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netdev_event_func_t event_filter;
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netdev_connect_cb_t connect_cb;
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netdev_disconnect_cb_t disconnect_cb;
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netdev_neighbor_report_cb_t neighbor_report_cb;
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netdev_command_cb_t adhoc_cb;
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void *user_data;
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struct eapol_sm *sm;
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struct sae_sm *sae_sm;
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struct auth_proto *ap;
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struct handshake_state *handshake;
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uint32_t connect_cmd_id;
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uint32_t disconnect_cmd_id;
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uint32_t join_adhoc_cmd_id;
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uint32_t leave_adhoc_cmd_id;
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uint32_t set_interface_cmd_id;
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uint32_t rekey_offload_cmd_id;
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uint32_t qos_map_cmd_id;
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enum netdev_result result;
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uint16_t last_code; /* reason or status, depending on result */
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struct l_timeout *neighbor_report_timeout;
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struct l_timeout *sa_query_timeout;
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struct l_timeout *group_handshake_timeout;
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struct l_timeout *gas_timeout;
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uint16_t sa_query_id;
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uint8_t prev_bssid[ETH_ALEN];
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uint8_t prev_snonce[32];
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int8_t rssi_levels[16];
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uint8_t rssi_levels_num;
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uint8_t cur_rssi_level_idx;
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int8_t cur_rssi;
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struct l_timeout *rssi_poll_timeout;
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uint32_t rssi_poll_cmd_id;
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uint32_t set_powered_cmd_id;
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netdev_command_cb_t set_powered_cb;
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void *set_powered_user_data;
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netdev_destroy_func_t set_powered_destroy;
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struct watchlist frame_watches;
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struct watchlist station_watches;
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struct l_io *pae_io; /* for drivers without EAPoL over NL80211 */
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bool connected : 1;
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bool operational : 1;
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bool rekey_offload_support : 1;
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bool pae_over_nl80211 : 1;
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bool in_ft : 1;
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bool cur_rssi_low : 1;
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bool use_4addr : 1;
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bool ignore_connect_event : 1;
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bool expect_connect_failure : 1;
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bool aborting : 1;
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bool mac_randomize_once : 1;
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};
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struct netdev_preauth_state {
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netdev_preauthenticate_cb_t cb;
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void *user_data;
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struct netdev *netdev;
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};
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struct netdev_watch {
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uint32_t id;
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netdev_watch_func_t callback;
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void *user_data;
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};
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struct netdev_frame_watch {
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uint16_t frame_type;
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uint8_t *prefix;
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size_t prefix_len;
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struct watchlist_item super;
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};
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static struct l_netlink *rtnl = NULL;
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static struct l_genl_family *nl80211;
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static struct l_queue *netdev_list;
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static struct watchlist netdev_watches;
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static void do_debug(const char *str, void *user_data)
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{
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const char *prefix = user_data;
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l_info("%s%s", prefix, str);
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}
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/* Cancels ongoing GTK/IGTK related commands (if any) */
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static void netdev_handshake_state_cancel_rekey(
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struct netdev_handshake_state *nhs)
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{
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if (nhs->group_new_key_cmd_id) {
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l_genl_family_cancel(nl80211, nhs->group_new_key_cmd_id);
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nhs->group_new_key_cmd_id = 0;
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}
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if (nhs->group_management_new_key_cmd_id) {
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l_genl_family_cancel(nl80211,
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nhs->group_management_new_key_cmd_id);
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nhs->group_management_new_key_cmd_id = 0;
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}
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}
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static void netdev_handshake_state_cancel_all(
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struct netdev_handshake_state *nhs)
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{
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if (nhs->pairwise_new_key_cmd_id) {
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l_genl_family_cancel(nl80211, nhs->pairwise_new_key_cmd_id);
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nhs->pairwise_new_key_cmd_id = 0;
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}
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netdev_handshake_state_cancel_rekey(nhs);
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if (nhs->set_station_cmd_id) {
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l_genl_family_cancel(nl80211, nhs->set_station_cmd_id);
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nhs->set_station_cmd_id = 0;
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}
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}
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static void netdev_handshake_state_free(struct handshake_state *hs)
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{
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struct netdev_handshake_state *nhs =
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l_container_of(hs, struct netdev_handshake_state, super);
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netdev_handshake_state_cancel_all(nhs);
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l_free(nhs);
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}
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struct handshake_state *netdev_handshake_state_new(struct netdev *netdev)
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{
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struct netdev_handshake_state *nhs;
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nhs = l_new(struct netdev_handshake_state, 1);
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nhs->super.ifindex = netdev->index;
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nhs->super.free = netdev_handshake_state_free;
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nhs->netdev = netdev;
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/*
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* Since GTK/IGTK are optional (NO_GROUP_TRAFFIC), we set them as
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* 'installed' upon initalization. If/When the gtk/igtk callback is
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* called they will get set to false until we have received a successful
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* callback from nl80211. From these callbacks we can check that all
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* the keys have been installed, and only then trigger the handshake
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* complete callback.
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*/
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nhs->gtk_installed = true;
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nhs->igtk_installed = true;
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return &nhs->super;
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}
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struct wiphy *netdev_get_wiphy(struct netdev *netdev)
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{
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return netdev->wiphy;
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}
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const uint8_t *netdev_get_address(struct netdev *netdev)
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{
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return netdev->addr;
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}
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uint32_t netdev_get_ifindex(struct netdev *netdev)
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{
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return netdev->index;
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}
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uint64_t netdev_get_wdev_id(struct netdev *netdev)
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{
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return netdev->wdev_id;
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}
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enum netdev_iftype netdev_get_iftype(struct netdev *netdev)
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{
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switch (netdev->type) {
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case NL80211_IFTYPE_STATION:
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return NETDEV_IFTYPE_STATION;
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case NL80211_IFTYPE_AP:
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return NETDEV_IFTYPE_AP;
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case NL80211_IFTYPE_ADHOC:
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return NETDEV_IFTYPE_ADHOC;
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case NL80211_IFTYPE_P2P_CLIENT:
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return NETDEV_IFTYPE_P2P_CLIENT;
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case NL80211_IFTYPE_P2P_GO:
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return NETDEV_IFTYPE_P2P_GO;
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default:
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/* can't really do much here */
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l_error("unknown iftype %u", netdev->type);
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return NETDEV_IFTYPE_STATION;
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}
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}
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const char *netdev_get_name(struct netdev *netdev)
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{
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return netdev->name;
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}
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bool netdev_get_is_up(struct netdev *netdev)
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{
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return (netdev->ifi_flags & IFF_UP) != 0;
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}
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struct handshake_state *netdev_get_handshake(struct netdev *netdev)
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{
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return netdev->handshake;
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}
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struct device *netdev_get_device(struct netdev *netdev)
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{
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return netdev->device;
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}
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const char *netdev_get_path(struct netdev *netdev)
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{
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static char path[26];
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snprintf(path, sizeof(path), "%s/%u", wiphy_get_path(netdev->wiphy),
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netdev->index);
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return path;
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}
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static void netdev_set_powered_result(int error, uint16_t type,
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const void *data,
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uint32_t len, void *user_data)
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{
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struct netdev *netdev = user_data;
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if (netdev->set_powered_cb)
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netdev->set_powered_cb(netdev, error,
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netdev->set_powered_user_data);
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netdev->set_powered_cb = NULL;
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}
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static void netdev_set_powered_destroy(void *user_data)
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{
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struct netdev *netdev = user_data;
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netdev->set_powered_cmd_id = 0;
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if (netdev->set_powered_destroy)
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netdev->set_powered_destroy(netdev->set_powered_user_data);
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netdev->set_powered_destroy = NULL;
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netdev->set_powered_user_data = NULL;
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}
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static uint32_t rtnl_set_powered(int ifindex, bool powered,
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l_netlink_command_func_t cb, void *user_data,
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l_netlink_destroy_func_t destroy)
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{
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struct ifinfomsg *rtmmsg;
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size_t bufsize;
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uint32_t id;
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bufsize = NLMSG_ALIGN(sizeof(struct ifinfomsg));
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rtmmsg = l_malloc(bufsize);
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memset(rtmmsg, 0, bufsize);
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rtmmsg->ifi_family = AF_UNSPEC;
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rtmmsg->ifi_index = ifindex;
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rtmmsg->ifi_change = IFF_UP;
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rtmmsg->ifi_flags = powered ? IFF_UP : 0;
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id = l_netlink_send(rtnl, RTM_SETLINK, 0, rtmmsg, bufsize,
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cb, user_data, destroy);
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l_free(rtmmsg);
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return id;
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}
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int netdev_set_powered(struct netdev *netdev, bool powered,
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netdev_command_cb_t callback, void *user_data,
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netdev_destroy_func_t destroy)
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{
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if (netdev->set_powered_cmd_id ||
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netdev->set_interface_cmd_id)
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return -EBUSY;
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netdev->set_powered_cmd_id =
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rtnl_set_powered(netdev->index, powered,
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netdev_set_powered_result, netdev,
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netdev_set_powered_destroy);
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if (!netdev->set_powered_cmd_id)
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return -EIO;
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netdev->set_powered_cb = callback;
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netdev->set_powered_user_data = user_data;
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netdev->set_powered_destroy = destroy;
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return 0;
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}
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static void netdev_set_rssi_level_idx(struct netdev *netdev)
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{
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uint8_t new_level;
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for (new_level = 0; new_level < netdev->rssi_levels_num; new_level++)
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if (netdev->cur_rssi >= netdev->rssi_levels[new_level])
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break;
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netdev->cur_rssi_level_idx = new_level;
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}
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static void netdev_rssi_poll_cb(struct l_genl_msg *msg, void *user_data)
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{
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struct netdev *netdev = user_data;
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struct l_genl_attr attr, nested;
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uint16_t type, len;
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const void *data;
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bool found;
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uint8_t prev_rssi_level_idx = netdev->cur_rssi_level_idx;
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netdev->rssi_poll_cmd_id = 0;
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if (!l_genl_attr_init(&attr, msg))
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goto done;
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found = false;
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while (l_genl_attr_next(&attr, &type, &len, &data)) {
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if (type != NL80211_ATTR_STA_INFO)
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continue;
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found = true;
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break;
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}
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if (!found || !l_genl_attr_recurse(&attr, &nested))
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goto done;
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found = false;
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while (l_genl_attr_next(&nested, &type, &len, &data)) {
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if (type != NL80211_STA_INFO_SIGNAL_AVG)
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continue;
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if (len != 1)
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continue;
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found = true;
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netdev->cur_rssi = *(const int8_t *) data;
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break;
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}
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if (!found)
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goto done;
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/*
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* Note we don't have to handle LOW_SIGNAL_THRESHOLD here. The
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* CQM single threshold RSSI monitoring should work even if the
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* kernel driver doesn't support multiple thresholds. So the
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* polling only handles the client-supplied threshold list.
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*/
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netdev_set_rssi_level_idx(netdev);
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if (netdev->cur_rssi_level_idx != prev_rssi_level_idx)
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netdev->event_filter(netdev, NETDEV_EVENT_RSSI_LEVEL_NOTIFY,
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&netdev->cur_rssi_level_idx,
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netdev->user_data);
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done:
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/* Rearm timer */
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l_timeout_modify(netdev->rssi_poll_timeout, 6);
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}
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static void netdev_rssi_poll(struct l_timeout *timeout, void *user_data)
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{
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struct netdev *netdev = user_data;
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_GET_STATION, 64);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN,
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netdev->handshake->aa);
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|
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netdev->rssi_poll_cmd_id = l_genl_family_send(nl80211, msg,
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netdev_rssi_poll_cb,
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netdev, NULL);
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}
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|
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/* To be called whenever operational or rssi_levels_num are updated */
|
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static void netdev_rssi_polling_update(struct netdev *netdev)
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{
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if (wiphy_has_ext_feature(netdev->wiphy,
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NL80211_EXT_FEATURE_CQM_RSSI_LIST))
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return;
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|
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if (netdev->operational && netdev->rssi_levels_num > 0) {
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if (netdev->rssi_poll_timeout)
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return;
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netdev->rssi_poll_timeout =
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l_timeout_create(1, netdev_rssi_poll, netdev, NULL);
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} else {
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if (!netdev->rssi_poll_timeout)
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return;
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|
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l_timeout_remove(netdev->rssi_poll_timeout);
|
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netdev->rssi_poll_timeout = NULL;
|
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|
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if (netdev->rssi_poll_cmd_id) {
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l_genl_family_cancel(nl80211, netdev->rssi_poll_cmd_id);
|
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netdev->rssi_poll_cmd_id = 0;
|
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}
|
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}
|
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}
|
|
|
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static void netdev_preauth_destroy(void *data)
|
|
{
|
|
struct netdev_preauth_state *state = data;
|
|
|
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if (state->cb)
|
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state->cb(state->netdev, NETDEV_RESULT_ABORTED, NULL,
|
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state->user_data);
|
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|
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l_free(state);
|
|
}
|
|
|
|
static void netdev_connect_free(struct netdev *netdev)
|
|
{
|
|
if (netdev->sm) {
|
|
eapol_sm_free(netdev->sm);
|
|
netdev->sm = NULL;
|
|
}
|
|
|
|
if (netdev->ap) {
|
|
auth_proto_free(netdev->ap);
|
|
netdev->ap = NULL;
|
|
}
|
|
|
|
eapol_preauth_cancel(netdev->index);
|
|
|
|
if (netdev->handshake) {
|
|
handshake_state_free(netdev->handshake);
|
|
netdev->handshake = NULL;
|
|
}
|
|
|
|
if (netdev->neighbor_report_cb) {
|
|
netdev->neighbor_report_cb(netdev, -ENOTCONN, NULL, 0,
|
|
netdev->user_data);
|
|
netdev->neighbor_report_cb = NULL;
|
|
l_timeout_remove(netdev->neighbor_report_timeout);
|
|
}
|
|
|
|
if (netdev->sa_query_timeout) {
|
|
l_timeout_remove(netdev->sa_query_timeout);
|
|
netdev->sa_query_timeout = NULL;
|
|
}
|
|
|
|
if (netdev->group_handshake_timeout) {
|
|
l_timeout_remove(netdev->group_handshake_timeout);
|
|
netdev->group_handshake_timeout = NULL;
|
|
}
|
|
|
|
netdev->operational = false;
|
|
netdev->connected = false;
|
|
netdev->connect_cb = NULL;
|
|
netdev->event_filter = NULL;
|
|
netdev->user_data = NULL;
|
|
netdev->result = NETDEV_RESULT_OK;
|
|
netdev->last_code = 0;
|
|
netdev->in_ft = false;
|
|
netdev->ignore_connect_event = false;
|
|
netdev->expect_connect_failure = false;
|
|
|
|
netdev_rssi_polling_update(netdev);
|
|
|
|
if (netdev->connect_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->connect_cmd_id);
|
|
netdev->connect_cmd_id = 0;
|
|
} else if (netdev->disconnect_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->disconnect_cmd_id);
|
|
netdev->disconnect_cmd_id = 0;
|
|
}
|
|
}
|
|
|
|
static void netdev_connect_failed(struct netdev *netdev,
|
|
enum netdev_result result,
|
|
uint16_t status_or_reason)
|
|
{
|
|
netdev_connect_cb_t connect_cb = netdev->connect_cb;
|
|
netdev_event_func_t event_filter = netdev->event_filter;
|
|
void *connect_data = netdev->user_data;
|
|
|
|
netdev->disconnect_cmd_id = 0;
|
|
|
|
/* Done this way to allow re-entrant netdev_connect calls */
|
|
netdev_connect_free(netdev);
|
|
|
|
if (connect_cb)
|
|
connect_cb(netdev, result, &status_or_reason, connect_data);
|
|
else if (event_filter)
|
|
event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_SME,
|
|
&status_or_reason,
|
|
connect_data);
|
|
}
|
|
|
|
static void netdev_disconnect_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev_connect_failed(netdev, netdev->result, netdev->last_code);
|
|
}
|
|
|
|
static void netdev_free(void *data)
|
|
{
|
|
struct netdev *netdev = data;
|
|
|
|
l_debug("Freeing netdev %s[%d]", netdev->name, netdev->index);
|
|
|
|
if (netdev->neighbor_report_cb) {
|
|
netdev->neighbor_report_cb(netdev, -ENODEV, NULL, 0,
|
|
netdev->user_data);
|
|
netdev->neighbor_report_cb = NULL;
|
|
l_timeout_remove(netdev->neighbor_report_timeout);
|
|
}
|
|
|
|
if (netdev->connected)
|
|
netdev_connect_free(netdev);
|
|
else if (netdev->disconnect_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->disconnect_cmd_id);
|
|
netdev->disconnect_cmd_id = 0;
|
|
|
|
if (netdev->disconnect_cb)
|
|
netdev->disconnect_cb(netdev, true, netdev->user_data);
|
|
|
|
netdev->disconnect_cb = NULL;
|
|
netdev->user_data = NULL;
|
|
}
|
|
|
|
if (netdev->join_adhoc_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->join_adhoc_cmd_id);
|
|
netdev->join_adhoc_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->leave_adhoc_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->leave_adhoc_cmd_id);
|
|
netdev->leave_adhoc_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->set_powered_cmd_id) {
|
|
l_netlink_cancel(rtnl, netdev->set_powered_cmd_id);
|
|
netdev->set_powered_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->rekey_offload_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->rekey_offload_cmd_id);
|
|
netdev->rekey_offload_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->qos_map_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->qos_map_cmd_id);
|
|
netdev->qos_map_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->device) {
|
|
WATCHLIST_NOTIFY(&netdev_watches, netdev_watch_func_t,
|
|
netdev, NETDEV_WATCH_EVENT_DEL);
|
|
device_remove(netdev->device);
|
|
}
|
|
|
|
watchlist_destroy(&netdev->frame_watches);
|
|
watchlist_destroy(&netdev->station_watches);
|
|
|
|
l_io_destroy(netdev->pae_io);
|
|
|
|
l_free(netdev);
|
|
}
|
|
|
|
static void netdev_shutdown_one(void *data, void *user_data)
|
|
{
|
|
struct netdev *netdev = data;
|
|
|
|
if (netdev_get_is_up(netdev))
|
|
rtnl_set_powered(netdev->index, false, NULL, NULL, NULL);
|
|
}
|
|
|
|
static bool netdev_match(const void *a, const void *b)
|
|
{
|
|
const struct netdev *netdev = a;
|
|
uint32_t ifindex = L_PTR_TO_UINT(b);
|
|
|
|
return (netdev->index == ifindex);
|
|
}
|
|
|
|
struct netdev *netdev_find(int ifindex)
|
|
{
|
|
return l_queue_find(netdev_list, netdev_match, L_UINT_TO_PTR(ifindex));
|
|
}
|
|
|
|
static void netdev_lost_beacon(struct netdev *netdev)
|
|
{
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
if (netdev->event_filter)
|
|
netdev->event_filter(netdev, NETDEV_EVENT_LOST_BEACON, NULL,
|
|
netdev->user_data);
|
|
}
|
|
|
|
/* Threshold RSSI for roaming to trigger, configurable in main.conf */
|
|
static int LOW_SIGNAL_THRESHOLD;
|
|
|
|
static void netdev_cqm_event_rssi_threshold(struct netdev *netdev,
|
|
uint32_t rssi_event)
|
|
{
|
|
int event;
|
|
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
if (rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
|
|
rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)
|
|
return;
|
|
|
|
if (!netdev->event_filter)
|
|
return;
|
|
|
|
netdev->cur_rssi_low =
|
|
(rssi_event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW);
|
|
event = netdev->cur_rssi_low ? NETDEV_EVENT_RSSI_THRESHOLD_LOW :
|
|
NETDEV_EVENT_RSSI_THRESHOLD_HIGH;
|
|
|
|
netdev->event_filter(netdev, event, NULL, netdev->user_data);
|
|
}
|
|
|
|
static void netdev_rssi_level_init(struct netdev *netdev)
|
|
{
|
|
if (netdev->connected && netdev->rssi_levels_num)
|
|
netdev_set_rssi_level_idx(netdev);
|
|
}
|
|
|
|
static void netdev_cqm_event_rssi_value(struct netdev *netdev, int rssi_val)
|
|
{
|
|
bool new_rssi_low;
|
|
uint8_t prev_rssi_level_idx = netdev->cur_rssi_level_idx;
|
|
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
if (rssi_val > 127)
|
|
rssi_val = 127;
|
|
else if (rssi_val < -127)
|
|
rssi_val = -127;
|
|
|
|
netdev->cur_rssi = rssi_val;
|
|
|
|
if (!netdev->event_filter)
|
|
return;
|
|
|
|
new_rssi_low = rssi_val < LOW_SIGNAL_THRESHOLD;
|
|
if (netdev->cur_rssi_low != new_rssi_low) {
|
|
int event = new_rssi_low ?
|
|
NETDEV_EVENT_RSSI_THRESHOLD_LOW :
|
|
NETDEV_EVENT_RSSI_THRESHOLD_HIGH;
|
|
|
|
netdev->cur_rssi_low = new_rssi_low;
|
|
netdev->event_filter(netdev, event, NULL, netdev->user_data);
|
|
}
|
|
|
|
if (!netdev->rssi_levels_num)
|
|
return;
|
|
|
|
netdev_set_rssi_level_idx(netdev);
|
|
if (netdev->cur_rssi_level_idx != prev_rssi_level_idx)
|
|
netdev->event_filter(netdev, NETDEV_EVENT_RSSI_LEVEL_NOTIFY,
|
|
&netdev->cur_rssi_level_idx,
|
|
netdev->user_data);
|
|
}
|
|
|
|
static void netdev_cqm_event(struct l_genl_msg *msg, struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
struct l_genl_attr nested;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint32_t *rssi_event = NULL;
|
|
int32_t *rssi_val = NULL;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_CQM:
|
|
if (!l_genl_attr_recurse(&attr, &nested))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&nested, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_CQM_BEACON_LOSS_EVENT:
|
|
netdev_lost_beacon(netdev);
|
|
break;
|
|
|
|
case NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT:
|
|
if (len != 4)
|
|
continue;
|
|
|
|
rssi_event = (uint32_t *) data;
|
|
break;
|
|
|
|
case NL80211_ATTR_CQM_RSSI_LEVEL:
|
|
if (len != 4)
|
|
continue;
|
|
|
|
rssi_val = (int32_t *) data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (rssi_event) {
|
|
if (rssi_val)
|
|
netdev_cqm_event_rssi_value(netdev, *rssi_val);
|
|
else
|
|
netdev_cqm_event_rssi_threshold(netdev, *rssi_event);
|
|
}
|
|
}
|
|
|
|
static void netdev_rekey_offload_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
struct l_genl_attr nested;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint64_t replay_ctr;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
if (type != NL80211_ATTR_REKEY_DATA)
|
|
continue;
|
|
|
|
if (!l_genl_attr_recurse(&attr, &nested))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&nested, &type, &len, &data)) {
|
|
if (type != NL80211_REKEY_DATA_REPLAY_CTR)
|
|
continue;
|
|
|
|
if (len != sizeof(uint64_t)) {
|
|
l_warn("Invalid replay_ctr");
|
|
return;
|
|
}
|
|
|
|
replay_ctr = *((uint64_t *) data);
|
|
__eapol_update_replay_counter(netdev->index,
|
|
netdev->addr,
|
|
netdev->handshake->aa,
|
|
replay_ctr);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void netdev_disconnect_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint16_t reason_code = 0;
|
|
bool disconnect_by_ap = false;
|
|
netdev_event_func_t event_filter;
|
|
void *event_data;
|
|
|
|
l_debug("");
|
|
|
|
if (!netdev->connected || netdev->disconnect_cmd_id > 0 ||
|
|
netdev->in_ft)
|
|
return;
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_error("attr init failed");
|
|
return;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_REASON_CODE:
|
|
if (len != sizeof(uint16_t))
|
|
l_warn("Invalid reason code attribute");
|
|
else
|
|
reason_code = *((uint16_t *) data);
|
|
|
|
break;
|
|
|
|
case NL80211_ATTR_DISCONNECTED_BY_AP:
|
|
disconnect_by_ap = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
l_info("Received Deauthentication event, reason: %hu, from_ap: %s",
|
|
reason_code, disconnect_by_ap ? "true" : "false");
|
|
|
|
event_filter = netdev->event_filter;
|
|
event_data = netdev->user_data;
|
|
netdev_connect_free(netdev);
|
|
|
|
if (!event_filter)
|
|
return;
|
|
|
|
if (disconnect_by_ap)
|
|
event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_AP,
|
|
&reason_code, event_data);
|
|
else
|
|
event_filter(netdev, NETDEV_EVENT_DISCONNECT_BY_SME,
|
|
&reason_code, event_data);
|
|
}
|
|
|
|
static void netdev_cmd_disconnect_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
void *disconnect_data;
|
|
netdev_disconnect_cb_t disconnect_cb;
|
|
bool r;
|
|
|
|
netdev->disconnect_cmd_id = 0;
|
|
netdev->aborting = false;
|
|
|
|
if (!netdev->disconnect_cb) {
|
|
netdev->user_data = NULL;
|
|
return;
|
|
}
|
|
|
|
disconnect_data = netdev->user_data;
|
|
disconnect_cb = netdev->disconnect_cb;
|
|
netdev->user_data = NULL;
|
|
netdev->disconnect_cb = NULL;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0)
|
|
r = false;
|
|
else
|
|
r = true;
|
|
|
|
disconnect_cb(netdev, r, disconnect_data);
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_disconnect(struct netdev *netdev,
|
|
uint16_t reason_code)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_DISCONNECT, 64);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_deauthenticate_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
l_debug("");
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_deauthenticate(struct netdev *netdev,
|
|
uint16_t reason_code)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_DEAUTHENTICATE, 128);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN,
|
|
netdev->handshake->aa);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_del_station(struct netdev *netdev,
|
|
const uint8_t *sta,
|
|
uint16_t reason_code,
|
|
bool disassociate)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
uint8_t subtype = disassociate ?
|
|
MPDU_MANAGEMENT_SUBTYPE_DISASSOCIATION :
|
|
MPDU_MANAGEMENT_SUBTYPE_DEAUTHENTICATION;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_DEL_STATION, 64);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, 6, sta);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MGMT_SUBTYPE, 1, &subtype);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_del_sta_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
if (l_genl_msg_get_error(msg) < 0)
|
|
l_error("DEL_STATION failed: %i", l_genl_msg_get_error(msg));
|
|
}
|
|
|
|
int netdev_del_station(struct netdev *netdev, const uint8_t *sta,
|
|
uint16_t reason_code, bool disassociate)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_del_station(netdev, sta, reason_code,
|
|
disassociate);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_del_sta_cb, NULL, NULL))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_operstate_cb(int error, uint16_t type,
|
|
const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
if (!error)
|
|
return;
|
|
|
|
l_debug("netdev: %u, error: %s", L_PTR_TO_UINT(user_data),
|
|
strerror(-error));
|
|
}
|
|
|
|
static void netdev_connect_ok(struct netdev *netdev)
|
|
{
|
|
rtnl_set_linkmode_and_operstate(rtnl, netdev->index,
|
|
IF_LINK_MODE_DORMANT, IF_OPER_UP,
|
|
netdev_operstate_cb,
|
|
L_UINT_TO_PTR(netdev->index), NULL);
|
|
|
|
netdev->operational = true;
|
|
|
|
if (netdev->connect_cb) {
|
|
netdev->connect_cb(netdev, NETDEV_RESULT_OK, NULL,
|
|
netdev->user_data);
|
|
netdev->connect_cb = NULL;
|
|
}
|
|
|
|
netdev_rssi_polling_update(netdev);
|
|
}
|
|
|
|
static void netdev_setting_keys_failed(struct netdev_handshake_state *nhs,
|
|
int err)
|
|
{
|
|
struct netdev *netdev = nhs->netdev;
|
|
struct l_genl_msg *msg;
|
|
|
|
/*
|
|
* Something went wrong with our sequence:
|
|
* 1. new_key(ptk)
|
|
* 2. new_key(gtk) [optional]
|
|
* 3. new_key(igtk) [optional]
|
|
* 4. rekey offload [optional]
|
|
* 5. set_station
|
|
*
|
|
* Cancel all pending commands, then de-authenticate
|
|
*/
|
|
netdev_handshake_state_cancel_all(nhs);
|
|
|
|
if (netdev->rekey_offload_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->rekey_offload_cmd_id);
|
|
netdev->rekey_offload_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->group_handshake_timeout) {
|
|
l_timeout_remove(netdev->group_handshake_timeout);
|
|
netdev->group_handshake_timeout = NULL;
|
|
}
|
|
|
|
netdev->result = NETDEV_RESULT_KEY_SETTING_FAILED;
|
|
handshake_event(&nhs->super, HANDSHAKE_EVENT_SETTING_KEYS_FAILED, &err);
|
|
|
|
switch (netdev->type) {
|
|
case NL80211_IFTYPE_STATION:
|
|
msg = netdev_build_cmd_disconnect(netdev,
|
|
MMPDU_REASON_CODE_UNSPECIFIED);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, msg,
|
|
netdev_disconnect_cb,
|
|
netdev, NULL);
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
msg = netdev_build_cmd_del_station(netdev, nhs->super.spa,
|
|
MMPDU_REASON_CODE_UNSPECIFIED, false);
|
|
if (!l_genl_family_send(nl80211, msg, NULL, NULL, NULL))
|
|
l_error("error sending DEL_STATION");
|
|
}
|
|
}
|
|
|
|
static void try_handshake_complete(struct netdev_handshake_state *nhs)
|
|
{
|
|
if (nhs->ptk_installed && nhs->gtk_installed && nhs->igtk_installed &&
|
|
!nhs->complete) {
|
|
nhs->complete = true;
|
|
handshake_event(&nhs->super, HANDSHAKE_EVENT_COMPLETE, NULL);
|
|
|
|
netdev_connect_ok(nhs->netdev);
|
|
}
|
|
}
|
|
|
|
static void netdev_set_station_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev_handshake_state *nhs = user_data;
|
|
struct netdev *netdev = nhs->netdev;
|
|
int err;
|
|
|
|
nhs->set_station_cmd_id = 0;
|
|
nhs->ptk_installed = true;
|
|
|
|
if (netdev->type == NL80211_IFTYPE_STATION && !netdev->connected)
|
|
return;
|
|
|
|
err = l_genl_msg_get_error(msg);
|
|
if (err == -ENOTSUPP)
|
|
goto done;
|
|
|
|
if (err < 0) {
|
|
l_error("Set Station failed for ifindex %d", netdev->index);
|
|
netdev_setting_keys_failed(nhs, err);
|
|
return;
|
|
}
|
|
|
|
done:
|
|
try_handshake_complete(nhs);
|
|
}
|
|
|
|
static void netdev_new_group_key_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct netdev_handshake_state *nhs = data;
|
|
struct netdev *netdev = nhs->netdev;
|
|
int err = l_genl_msg_get_error(msg);
|
|
|
|
nhs->group_new_key_cmd_id = 0;
|
|
|
|
if (err < 0) {
|
|
l_error("New Key for Group Key failed for ifindex: %d",
|
|
netdev->index);
|
|
netdev_setting_keys_failed(nhs, err);
|
|
return;
|
|
}
|
|
|
|
nhs->gtk_installed = true;
|
|
try_handshake_complete(nhs);
|
|
}
|
|
|
|
static void netdev_new_group_management_key_cb(struct l_genl_msg *msg,
|
|
void *data)
|
|
{
|
|
struct netdev_handshake_state *nhs = data;
|
|
struct netdev *netdev = nhs->netdev;
|
|
int err = l_genl_msg_get_error(msg);
|
|
|
|
nhs->group_management_new_key_cmd_id = 0;
|
|
|
|
if (err < 0) {
|
|
l_error("New Key for Group Mgmt failed for ifindex: %d",
|
|
netdev->index);
|
|
netdev_setting_keys_failed(nhs, err);
|
|
return;
|
|
}
|
|
|
|
nhs->igtk_installed = true;
|
|
try_handshake_complete(nhs);
|
|
}
|
|
|
|
static bool netdev_copy_tk(uint8_t *tk_buf, const uint8_t *tk,
|
|
uint32_t cipher, bool authenticator)
|
|
{
|
|
switch (cipher) {
|
|
case CRYPTO_CIPHER_CCMP:
|
|
/*
|
|
* 802.11-2016 12.8.3 Mapping PTK to CCMP keys:
|
|
* "A STA shall use the temporal key as the CCMP key
|
|
* for MPDUs between the two communicating STAs."
|
|
*/
|
|
memcpy(tk_buf, tk, 16);
|
|
break;
|
|
case CRYPTO_CIPHER_TKIP:
|
|
/*
|
|
* 802.11-2016 12.8.1 Mapping PTK to TKIP keys:
|
|
* "A STA shall use bits 0-127 of the temporal key as its
|
|
* input to the TKIP Phase 1 and Phase 2 mixing functions.
|
|
*
|
|
* A STA shall use bits 128-191 of the temporal key as
|
|
* the michael key for MSDUs from the Authenticator's STA
|
|
* to the Supplicant's STA.
|
|
*
|
|
* A STA shall use bits 192-255 of the temporal key as
|
|
* the michael key for MSDUs from the Supplicant's STA
|
|
* to the Authenticator's STA."
|
|
*/
|
|
if (authenticator) {
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_ENCR_KEY,
|
|
tk, 16);
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY,
|
|
tk + 16, 8);
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
|
|
tk + 24, 8);
|
|
} else {
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_ENCR_KEY,
|
|
tk, 16);
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
|
|
tk + 16, 8);
|
|
memcpy(tk_buf + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY,
|
|
tk + 24, 8);
|
|
}
|
|
break;
|
|
default:
|
|
l_error("Unexpected cipher: %x", cipher);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static const uint8_t *netdev_choose_key_address(
|
|
struct netdev_handshake_state *nhs)
|
|
{
|
|
return (nhs->super.authenticator) ? nhs->super.spa : nhs->super.aa;
|
|
}
|
|
|
|
static void netdev_set_gtk(struct handshake_state *hs, uint8_t key_index,
|
|
const uint8_t *gtk, uint8_t gtk_len,
|
|
const uint8_t *rsc, uint8_t rsc_len,
|
|
uint32_t cipher)
|
|
{
|
|
struct netdev_handshake_state *nhs =
|
|
l_container_of(hs, struct netdev_handshake_state, super);
|
|
struct netdev *netdev = nhs->netdev;
|
|
uint8_t gtk_buf[32];
|
|
struct l_genl_msg *msg;
|
|
const uint8_t *addr = (netdev->type == NL80211_IFTYPE_ADHOC) ?
|
|
nhs->super.aa : NULL;
|
|
|
|
nhs->gtk_installed = false;
|
|
|
|
l_debug("%d", netdev->index);
|
|
|
|
if (crypto_cipher_key_len(cipher) != gtk_len) {
|
|
l_error("Unexpected key length: %d", gtk_len);
|
|
netdev_setting_keys_failed(nhs, -ERANGE);
|
|
return;
|
|
}
|
|
|
|
if (!netdev_copy_tk(gtk_buf, gtk, cipher, false)) {
|
|
netdev_setting_keys_failed(nhs, -ENOENT);
|
|
return;
|
|
}
|
|
|
|
if (hs->wait_for_gtk) {
|
|
l_timeout_remove(netdev->group_handshake_timeout);
|
|
netdev->group_handshake_timeout = NULL;
|
|
}
|
|
|
|
msg = nl80211_build_new_key_group(netdev->index, cipher, key_index,
|
|
gtk_buf, gtk_len, rsc, rsc_len, addr);
|
|
|
|
nhs->group_new_key_cmd_id =
|
|
l_genl_family_send(nl80211, msg, netdev_new_group_key_cb,
|
|
nhs, NULL);
|
|
|
|
if (nhs->group_new_key_cmd_id > 0)
|
|
return;
|
|
|
|
l_genl_msg_unref(msg);
|
|
netdev_setting_keys_failed(nhs, -EIO);
|
|
}
|
|
|
|
static void netdev_set_igtk(struct handshake_state *hs, uint8_t key_index,
|
|
const uint8_t *igtk, uint8_t igtk_len,
|
|
const uint8_t *ipn, uint8_t ipn_len,
|
|
uint32_t cipher)
|
|
{
|
|
struct netdev_handshake_state *nhs =
|
|
l_container_of(hs, struct netdev_handshake_state, super);
|
|
uint8_t igtk_buf[16];
|
|
struct netdev *netdev = nhs->netdev;
|
|
struct l_genl_msg *msg;
|
|
|
|
nhs->igtk_installed = false;
|
|
|
|
l_debug("%d", netdev->index);
|
|
|
|
if (crypto_cipher_key_len(cipher) != igtk_len) {
|
|
l_error("Unexpected key length: %d", igtk_len);
|
|
netdev_setting_keys_failed(nhs, -ERANGE);
|
|
return;
|
|
}
|
|
|
|
switch (cipher) {
|
|
case CRYPTO_CIPHER_BIP:
|
|
memcpy(igtk_buf, igtk, 16);
|
|
break;
|
|
default:
|
|
l_error("Unexpected cipher: %x", cipher);
|
|
netdev_setting_keys_failed(nhs, -ENOENT);
|
|
return;
|
|
}
|
|
|
|
msg = nl80211_build_new_key_group(netdev->index, cipher, key_index,
|
|
igtk_buf, igtk_len, ipn, ipn_len, NULL);
|
|
|
|
nhs->group_management_new_key_cmd_id =
|
|
l_genl_family_send(nl80211, msg,
|
|
netdev_new_group_management_key_cb,
|
|
nhs, NULL);
|
|
|
|
if (nhs->group_management_new_key_cmd_id > 0)
|
|
return;
|
|
|
|
l_genl_msg_unref(msg);
|
|
netdev_setting_keys_failed(nhs, -EIO);
|
|
}
|
|
|
|
static void netdev_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct netdev_handshake_state *nhs = data;
|
|
struct netdev *netdev = nhs->netdev;
|
|
const uint8_t *addr = netdev_choose_key_address(nhs);
|
|
int err = l_genl_msg_get_error(msg);
|
|
|
|
nhs->pairwise_new_key_cmd_id = 0;
|
|
|
|
if (err < 0) {
|
|
l_error("New Key for Pairwise Key failed for ifindex: %d",
|
|
netdev->index);
|
|
goto error;
|
|
}
|
|
|
|
/*
|
|
* Set the AUTHORIZED flag using a SET_STATION command even if
|
|
* we're already operational, it will not hurt during re-keying
|
|
* and is necessary after an FT.
|
|
*/
|
|
msg = nl80211_build_set_station_authorized(netdev->index, addr);
|
|
|
|
nhs->set_station_cmd_id =
|
|
l_genl_family_send(nl80211, msg, netdev_set_station_cb,
|
|
nhs, NULL);
|
|
if (nhs->set_station_cmd_id > 0)
|
|
return;
|
|
|
|
l_genl_msg_unref(msg);
|
|
err = -EIO;
|
|
error:
|
|
netdev_setting_keys_failed(nhs, err);
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_new_key_pairwise(
|
|
struct netdev *netdev,
|
|
uint32_t cipher,
|
|
const uint8_t *aa,
|
|
const uint8_t *tk,
|
|
size_t tk_len)
|
|
{
|
|
uint8_t key_id = 0;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DATA, tk_len, tk);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_CIPHER, 4, &cipher);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, aa);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_group_timeout_cb(struct l_timeout *timeout, void *user_data)
|
|
{
|
|
struct netdev_handshake_state *nhs = user_data;
|
|
|
|
/*
|
|
* There was a problem with the ptk, this should have triggered a key
|
|
* setting failure event already.
|
|
*/
|
|
if (!nhs->ptk_installed)
|
|
return;
|
|
|
|
/*
|
|
* If this happens, we never completed the group handshake. We can still
|
|
* complete the connection, but we will not have group traffic.
|
|
*/
|
|
l_warn("completing connection with no group traffic on ifindex %d",
|
|
nhs->netdev->index);
|
|
|
|
nhs->complete = true;
|
|
handshake_event(&nhs->super, HANDSHAKE_EVENT_COMPLETE, NULL);
|
|
|
|
netdev_connect_ok(nhs->netdev);
|
|
}
|
|
|
|
static void netdev_set_tk(struct handshake_state *hs,
|
|
const uint8_t *tk, uint32_t cipher)
|
|
{
|
|
struct netdev_handshake_state *nhs =
|
|
l_container_of(hs, struct netdev_handshake_state, super);
|
|
uint8_t tk_buf[32];
|
|
struct netdev *netdev = nhs->netdev;
|
|
struct l_genl_msg *msg;
|
|
const uint8_t *addr = netdev_choose_key_address(nhs);
|
|
int err;
|
|
|
|
/*
|
|
* WPA1 does the group handshake after the 4-way finishes so we can't
|
|
* rely on the gtk/igtk being set immediately after the ptk. Since
|
|
* 'gtk_installed' is initially set to true (to handle NO_GROUP_TRAFFIC)
|
|
* we must set it false so we don't notify that the connection was
|
|
* successful until we get the gtk/igtk callbacks. Note that we do not
|
|
* need to set igtk_installed false because the igtk could not happen at
|
|
* all.
|
|
*/
|
|
if (hs->wait_for_gtk) {
|
|
nhs->gtk_installed = false;
|
|
|
|
netdev->group_handshake_timeout = l_timeout_create(2,
|
|
netdev_group_timeout_cb, nhs, NULL);
|
|
}
|
|
|
|
/*
|
|
* 802.11 Section 4.10.4.3:
|
|
* Because in an IBSS there are two 4-way handshakes between
|
|
* any two Supplicants and Authenticators, the pairwise key used
|
|
* between any two STAs is from the 4-way handshake initiated
|
|
* by the STA Authenticator with the higher MAC address...
|
|
*/
|
|
if (netdev->type == NL80211_IFTYPE_ADHOC &&
|
|
memcmp(nhs->super.aa, nhs->super.spa, 6) < 0) {
|
|
nhs->ptk_installed = true;
|
|
try_handshake_complete(nhs);
|
|
return;
|
|
}
|
|
|
|
l_debug("%d", netdev->index);
|
|
|
|
err = -ENOENT;
|
|
if (!netdev_copy_tk(tk_buf, tk, cipher, false))
|
|
goto invalid_key;
|
|
|
|
msg = netdev_build_cmd_new_key_pairwise(netdev, cipher, addr, tk_buf,
|
|
crypto_cipher_key_len(cipher));
|
|
nhs->pairwise_new_key_cmd_id =
|
|
l_genl_family_send(nl80211, msg, netdev_new_pairwise_key_cb,
|
|
nhs, NULL);
|
|
if (nhs->pairwise_new_key_cmd_id > 0)
|
|
return;
|
|
|
|
err = -EIO;
|
|
l_genl_msg_unref(msg);
|
|
invalid_key:
|
|
netdev_setting_keys_failed(nhs, err);
|
|
}
|
|
|
|
void netdev_handshake_failed(struct handshake_state *hs, uint16_t reason_code)
|
|
{
|
|
struct netdev_handshake_state *nhs =
|
|
l_container_of(hs, struct netdev_handshake_state, super);
|
|
struct netdev *netdev = nhs->netdev;
|
|
struct l_genl_msg *msg;
|
|
|
|
l_error("4-Way handshake failed for ifindex: %d, reason: %u",
|
|
netdev->index, reason_code);
|
|
|
|
netdev->sm = NULL;
|
|
|
|
netdev->result = NETDEV_RESULT_HANDSHAKE_FAILED;
|
|
netdev->last_code = reason_code;
|
|
|
|
switch (netdev->type) {
|
|
case NL80211_IFTYPE_STATION:
|
|
msg = netdev_build_cmd_disconnect(netdev, reason_code);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, msg,
|
|
netdev_disconnect_cb,
|
|
netdev, NULL);
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
msg = netdev_build_cmd_del_station(netdev, nhs->super.spa,
|
|
reason_code, false);
|
|
if (!l_genl_family_send(nl80211, msg, NULL, NULL, NULL))
|
|
l_error("error sending DEL_STATION");
|
|
}
|
|
}
|
|
|
|
static void hardware_rekey_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct netdev *netdev = data;
|
|
int err;
|
|
|
|
netdev->rekey_offload_cmd_id = 0;
|
|
|
|
err = l_genl_msg_get_error(msg);
|
|
if (err < 0) {
|
|
if (err == -EOPNOTSUPP) {
|
|
l_error("hardware_rekey not supported");
|
|
netdev->rekey_offload_support = false;
|
|
}
|
|
|
|
/*
|
|
* TODO: Ignore all other errors for now, until WoWLAN is
|
|
* supported properly
|
|
*/
|
|
}
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_replay_counter(struct netdev *netdev,
|
|
const uint8_t *kek,
|
|
const uint8_t *kck,
|
|
uint64_t replay_ctr)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_REKEY_OFFLOAD, 512);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
|
|
l_genl_msg_enter_nested(msg, NL80211_ATTR_REKEY_DATA);
|
|
l_genl_msg_append_attr(msg, NL80211_REKEY_DATA_KEK,
|
|
NL80211_KEK_LEN, kek);
|
|
l_genl_msg_append_attr(msg, NL80211_REKEY_DATA_KCK,
|
|
NL80211_KCK_LEN, kck);
|
|
l_genl_msg_append_attr(msg, NL80211_REKEY_DATA_REPLAY_CTR,
|
|
NL80211_REPLAY_CTR_LEN, &replay_ctr);
|
|
|
|
l_genl_msg_leave_nested(msg);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_set_rekey_offload(uint32_t ifindex,
|
|
const uint8_t *kek,
|
|
const uint8_t *kck,
|
|
uint64_t replay_counter,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev;
|
|
struct l_genl_msg *msg;
|
|
|
|
netdev = netdev_find(ifindex);
|
|
if (!netdev)
|
|
return;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_STATION)
|
|
return;
|
|
|
|
if (!netdev->rekey_offload_support)
|
|
return;
|
|
|
|
l_debug("%d", netdev->index);
|
|
msg = netdev_build_cmd_replay_counter(netdev, kek, kck, replay_counter);
|
|
netdev->rekey_offload_cmd_id = l_genl_family_send(nl80211, msg,
|
|
hardware_rekey_cb,
|
|
netdev, NULL);
|
|
}
|
|
|
|
static void netdev_qos_map_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
int err = l_genl_msg_get_error(msg);
|
|
|
|
if (err < 0)
|
|
l_error("Could not set QoS Map in kernel: %d", err);
|
|
|
|
netdev->qos_map_cmd_id = 0;
|
|
}
|
|
|
|
/*
|
|
* TODO: Fix this in the kernel:
|
|
*
|
|
* The QoS Map is really of no use to IWD. The kernel requires it to map QoS
|
|
* network values properly to what it puts into the IP header. The way we have
|
|
* to let the kernel know is to receive the IE, then give it right back...
|
|
*
|
|
* The kernel/driver/firmware *could* simply obtain this information as the
|
|
* frame comes in and not require userspace to forward it back... but thats a
|
|
* battle for another day.
|
|
*/
|
|
static void netdev_send_qos_map_set(struct netdev *netdev,
|
|
const uint8_t *qos_set, size_t qos_len)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
if (!wiphy_supports_qos_set_map(netdev->wiphy)) {
|
|
l_warn("AP sent QoS Map, but capability was not advertised!");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Since this IE comes in on either a management frame or during
|
|
* Association response we could have potentially already set this.
|
|
*/
|
|
if (netdev->qos_map_cmd_id)
|
|
return;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_QOS_MAP, 128 + qos_len);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_QOS_MAP, qos_len, qos_set);
|
|
|
|
netdev->qos_map_cmd_id = l_genl_family_send(nl80211, msg,
|
|
netdev_qos_map_cb,
|
|
netdev, NULL);
|
|
}
|
|
|
|
static void netdev_connect_event(struct l_genl_msg *msg, struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
const uint16_t *status_code = NULL;
|
|
const uint8_t *ies = NULL;
|
|
size_t ies_len = 0;
|
|
struct ie_tlv_iter iter;
|
|
const uint8_t *resp_ies = NULL;
|
|
size_t resp_ies_len;
|
|
|
|
l_debug("");
|
|
|
|
if (netdev->aborting)
|
|
return;
|
|
|
|
if (netdev->ignore_connect_event)
|
|
return;
|
|
|
|
if (!netdev->connected) {
|
|
l_warn("Unexpected connection related event -- "
|
|
"is another supplicant running?");
|
|
return;
|
|
}
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_debug("attr init failed");
|
|
goto error;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_TIMED_OUT:
|
|
l_warn("authentication timed out");
|
|
goto error;
|
|
case NL80211_ATTR_STATUS_CODE:
|
|
if (len == sizeof(uint16_t))
|
|
status_code = data;
|
|
break;
|
|
case NL80211_ATTR_REQ_IE:
|
|
ies = data;
|
|
ies_len = len;
|
|
break;
|
|
case NL80211_ATTR_RESP_IE:
|
|
resp_ies = data;
|
|
resp_ies_len = len;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (netdev->expect_connect_failure) {
|
|
/*
|
|
* The kernel may think we are connected when we are actually
|
|
* expecting a failure here, e.g. if Authenticate/Associate had
|
|
* previously failed. If so we need to deauth to let the kernel
|
|
* know.
|
|
*/
|
|
if (status_code && *status_code == 0)
|
|
goto deauth;
|
|
else
|
|
goto error;
|
|
}
|
|
|
|
/* AP Rejected the authenticate / associate */
|
|
if (!status_code || *status_code != 0)
|
|
goto error;
|
|
|
|
/*
|
|
* The driver may have modified the IEs we passed to CMD_CONNECT
|
|
* before sending them out, the actual IE sent is reflected in the
|
|
* ATTR_REQ_IE sequence. These are the values EAPoL will need to use.
|
|
*/
|
|
ie_tlv_iter_init(&iter, ies, ies_len);
|
|
|
|
while (ie_tlv_iter_next(&iter)) {
|
|
data = ie_tlv_iter_get_data(&iter);
|
|
|
|
switch (ie_tlv_iter_get_tag(&iter)) {
|
|
case IE_TYPE_RSN:
|
|
handshake_state_set_supplicant_ie(netdev->handshake,
|
|
data - 2);
|
|
break;
|
|
case IE_TYPE_VENDOR_SPECIFIC:
|
|
if (!is_ie_wpa_ie(data, ie_tlv_iter_get_length(&iter)))
|
|
break;
|
|
|
|
handshake_state_set_supplicant_ie(netdev->handshake,
|
|
data - 2);
|
|
break;
|
|
case IE_TYPE_MOBILITY_DOMAIN:
|
|
handshake_state_set_mde(netdev->handshake, data - 2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (resp_ies) {
|
|
const uint8_t *fte = NULL;
|
|
const uint8_t *qos_set = NULL;
|
|
size_t qos_len = 0;
|
|
struct ie_ft_info ft_info;
|
|
|
|
ie_tlv_iter_init(&iter, resp_ies, resp_ies_len);
|
|
|
|
while (ie_tlv_iter_next(&iter)) {
|
|
data = ie_tlv_iter_get_data(&iter);
|
|
|
|
switch (ie_tlv_iter_get_tag(&iter)) {
|
|
case IE_TYPE_FAST_BSS_TRANSITION:
|
|
fte = data - 2;
|
|
break;
|
|
case IE_TYPE_QOS_MAP_SET:
|
|
qos_set = data;
|
|
qos_len = ie_tlv_iter_get_length(&iter);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* FILS handles its own FT key derivation */
|
|
if (fte && !(netdev->handshake->akm_suite &
|
|
(IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA256 |
|
|
IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA384))) {
|
|
uint32_t kck_len =
|
|
handshake_state_get_kck_len(netdev->handshake);
|
|
/*
|
|
* If we are here, then most likely we have a FullMac
|
|
* hw performing initial mobility association. We need
|
|
* to set the FTE element or the handshake will fail
|
|
* The firmware accepted the FTE element, so do not
|
|
* sanitize the contents and just assume they're okay.
|
|
*/
|
|
if (ie_parse_fast_bss_transition_from_data(fte,
|
|
fte[1] + 2, kck_len, &ft_info) >= 0) {
|
|
handshake_state_set_fte(netdev->handshake, fte);
|
|
handshake_state_set_kh_ids(netdev->handshake,
|
|
ft_info.r0khid,
|
|
ft_info.r0khid_len,
|
|
ft_info.r1khid);
|
|
} else {
|
|
l_info("CMD_CONNECT Succeeded, but parsing FTE"
|
|
" failed. Expect handshake failure");
|
|
}
|
|
}
|
|
|
|
if (qos_set)
|
|
netdev_send_qos_map_set(netdev, qos_set, qos_len);
|
|
}
|
|
|
|
if (netdev->sm) {
|
|
/*
|
|
* Start processing EAPoL frames now that the state machine
|
|
* has all the input data even in FT mode.
|
|
*/
|
|
if (!eapol_start(netdev->sm))
|
|
goto error;
|
|
|
|
return;
|
|
}
|
|
|
|
netdev_connect_ok(netdev);
|
|
|
|
return;
|
|
|
|
error:
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
(status_code) ? *status_code :
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
return;
|
|
|
|
deauth:
|
|
msg = netdev_build_cmd_deauthenticate(netdev,
|
|
MMPDU_REASON_CODE_UNSPECIFIED);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211,
|
|
msg,
|
|
netdev_disconnect_cb,
|
|
netdev, NULL);
|
|
}
|
|
|
|
static unsigned int ie_rsn_akm_suite_to_nl80211(enum ie_rsn_akm_suite akm)
|
|
{
|
|
switch (akm) {
|
|
case IE_RSN_AKM_SUITE_8021X:
|
|
return CRYPTO_AKM_8021X;
|
|
case IE_RSN_AKM_SUITE_PSK:
|
|
return CRYPTO_AKM_PSK;
|
|
case IE_RSN_AKM_SUITE_FT_OVER_8021X:
|
|
return CRYPTO_AKM_FT_OVER_8021X;
|
|
case IE_RSN_AKM_SUITE_FT_USING_PSK:
|
|
return CRYPTO_AKM_FT_USING_PSK;
|
|
case IE_RSN_AKM_SUITE_8021X_SHA256:
|
|
return CRYPTO_AKM_8021X_SHA256;
|
|
case IE_RSN_AKM_SUITE_PSK_SHA256:
|
|
return CRYPTO_AKM_PSK_SHA256;
|
|
case IE_RSN_AKM_SUITE_TDLS:
|
|
return CRYPTO_AKM_TDLS;
|
|
case IE_RSN_AKM_SUITE_SAE_SHA256:
|
|
return CRYPTO_AKM_SAE_SHA256;
|
|
case IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256:
|
|
return CRYPTO_AKM_FT_OVER_SAE_SHA256;
|
|
case IE_RSN_AKM_SUITE_AP_PEER_KEY_SHA256:
|
|
return CRYPTO_AKM_AP_PEER_KEY_SHA256;
|
|
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA256:
|
|
return CRYPTO_AKM_8021X_SUITE_B_SHA256;
|
|
case IE_RSN_AKM_SUITE_8021X_SUITE_B_SHA384:
|
|
return CRYPTO_AKM_8021X_SUITE_B_SHA384;
|
|
case IE_RSN_AKM_SUITE_FT_OVER_8021X_SHA384:
|
|
return CRYPTO_AKM_FT_OVER_8021X_SHA384;
|
|
case IE_RSN_AKM_SUITE_FILS_SHA256:
|
|
return CRYPTO_AKM_FILS_SHA256;
|
|
case IE_RSN_AKM_SUITE_FILS_SHA384:
|
|
return CRYPTO_AKM_FILS_SHA384;
|
|
case IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA256:
|
|
return CRYPTO_AKM_FT_OVER_FILS_SHA256;
|
|
case IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA384:
|
|
return CRYPTO_AKM_FT_OVER_FILS_SHA384;
|
|
case IE_RSN_AKM_SUITE_OWE:
|
|
return CRYPTO_AKM_OWE;
|
|
case IE_RSN_AKM_SUITE_OSEN:
|
|
return CRYPTO_AKM_OSEN;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_associate_common(
|
|
struct netdev *netdev)
|
|
{
|
|
struct handshake_state *hs = netdev->handshake;
|
|
bool is_rsn = hs->supplicant_ie != NULL;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_ASSOCIATE, 600);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4,
|
|
&netdev->frequency);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, hs->aa);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SSID, hs->ssid_len, hs->ssid);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SOCKET_OWNER, 0, NULL);
|
|
|
|
if (is_rsn) {
|
|
uint32_t nl_cipher;
|
|
uint32_t nl_akm;
|
|
uint32_t wpa_version;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT, 0, NULL);
|
|
|
|
if (netdev->pae_over_nl80211)
|
|
l_genl_msg_append_attr(msg,
|
|
NL80211_ATTR_CONTROL_PORT_OVER_NL80211,
|
|
0, NULL);
|
|
|
|
if (hs->pairwise_cipher == IE_RSN_CIPHER_SUITE_CCMP)
|
|
nl_cipher = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
nl_cipher = CRYPTO_CIPHER_TKIP;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
|
|
4, &nl_cipher);
|
|
|
|
if (hs->group_cipher == IE_RSN_CIPHER_SUITE_CCMP)
|
|
nl_cipher = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
nl_cipher = CRYPTO_CIPHER_TKIP;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
|
|
4, &nl_cipher);
|
|
|
|
if (hs->mfp) {
|
|
uint32_t use_mfp = NL80211_MFP_REQUIRED;
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_USE_MFP,
|
|
4, &use_mfp);
|
|
}
|
|
|
|
nl_akm = ie_rsn_akm_suite_to_nl80211(hs->akm_suite);
|
|
if (nl_akm)
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AKM_SUITES,
|
|
4, &nl_akm);
|
|
|
|
if (hs->wpa_ie)
|
|
wpa_version = NL80211_WPA_VERSION_1;
|
|
else
|
|
wpa_version = NL80211_WPA_VERSION_2;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WPA_VERSIONS,
|
|
4, &wpa_version);
|
|
}
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_cmd_ft_reassociate_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->connect_cmd_id = 0;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
struct l_genl_msg *cmd_deauth;
|
|
|
|
netdev->result = NETDEV_RESULT_ASSOCIATION_FAILED;
|
|
netdev->last_code = MMPDU_STATUS_CODE_UNSPECIFIED;
|
|
cmd_deauth = netdev_build_cmd_deauthenticate(netdev,
|
|
MMPDU_REASON_CODE_UNSPECIFIED);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211,
|
|
cmd_deauth,
|
|
netdev_disconnect_cb,
|
|
netdev, NULL);
|
|
}
|
|
}
|
|
|
|
static void netdev_authenticate_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
const uint8_t *frame = NULL;
|
|
size_t frame_len = 0;
|
|
int ret;
|
|
uint16_t status_code = MMPDU_STATUS_CODE_UNSPECIFIED;
|
|
|
|
l_debug("");
|
|
|
|
if (netdev->aborting)
|
|
return;
|
|
|
|
if (!netdev->connected) {
|
|
l_warn("Unexpected connection related event -- "
|
|
"is another supplicant running?");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* During Fast Transition we use the authenticate event to start the
|
|
* reassociation step because the FTE necessary before we can build
|
|
* the FT Associate command is included in the attached frame and is
|
|
* not available in the Authenticate command callback.
|
|
*/
|
|
if (!netdev->ap)
|
|
return;
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_debug("attr init failed");
|
|
|
|
goto auth_error;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_TIMED_OUT:
|
|
l_warn("authentication timed out");
|
|
|
|
if (auth_proto_auth_timeout(netdev->ap))
|
|
return;
|
|
|
|
goto auth_error;
|
|
|
|
case NL80211_ATTR_FRAME:
|
|
if (frame)
|
|
goto auth_error;
|
|
|
|
frame = data;
|
|
frame_len = len;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!frame)
|
|
goto auth_error;
|
|
|
|
if (netdev->ap) {
|
|
ret = auth_proto_rx_authenticate(netdev->ap, frame, frame_len);
|
|
if (ret == 0 || ret == -EAGAIN)
|
|
return;
|
|
else if (ret > 0)
|
|
status_code = (uint16_t)ret;
|
|
|
|
goto auth_error;
|
|
} else
|
|
goto auth_error;
|
|
|
|
return;
|
|
|
|
auth_error:
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
status_code);
|
|
}
|
|
|
|
static void netdev_associate_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
size_t frame_len = 0;
|
|
const uint8_t *frame = NULL;
|
|
uint16_t status_code = MMPDU_STATUS_CODE_UNSPECIFIED;
|
|
int ret;
|
|
|
|
l_debug("");
|
|
|
|
if (!netdev->connected || netdev->aborting)
|
|
return;
|
|
|
|
if (!netdev->ap)
|
|
return;
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_debug("attr init failed");
|
|
return;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_TIMED_OUT:
|
|
l_warn("association timed out");
|
|
|
|
if (auth_proto_assoc_timeout(netdev->ap))
|
|
return;
|
|
|
|
goto assoc_failed;
|
|
|
|
case NL80211_ATTR_FRAME:
|
|
frame = data;
|
|
frame_len = len;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!frame)
|
|
goto assoc_failed;
|
|
|
|
if (netdev->ap) {
|
|
ret = auth_proto_rx_associate(netdev->ap, frame, frame_len);
|
|
if (ret == 0) {
|
|
auth_proto_free(netdev->ap);
|
|
netdev->ap = NULL;
|
|
|
|
netdev->sm = eapol_sm_new(netdev->handshake);
|
|
eapol_register(netdev->sm);
|
|
|
|
/* Just in case this was a retry */
|
|
netdev->ignore_connect_event = false;
|
|
|
|
/*
|
|
* If in FT we need to prevent the 4-way handshake from
|
|
* happening, and instead just wait for rekeys
|
|
*/
|
|
if (netdev->in_ft) {
|
|
eapol_sm_set_require_handshake(netdev->sm,
|
|
false);
|
|
netdev->in_ft = false;
|
|
}
|
|
|
|
return;
|
|
} else if (ret == -EAGAIN) {
|
|
/*
|
|
* Here to support OWE retries. OWE will retry
|
|
* internally, but a connect even will still be emitted.
|
|
*/
|
|
netdev->ignore_connect_event = true;
|
|
return;
|
|
} else if (ret > 0)
|
|
status_code = (uint16_t)ret;
|
|
|
|
goto assoc_failed;
|
|
}
|
|
|
|
return;
|
|
|
|
assoc_failed:
|
|
netdev->result = NETDEV_RESULT_ASSOCIATION_FAILED;
|
|
netdev->last_code = status_code;
|
|
netdev->expect_connect_failure = true;
|
|
}
|
|
|
|
static void netdev_cmd_connect_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->connect_cmd_id = 0;
|
|
|
|
/* Wait for connect event */
|
|
if (l_genl_msg_get_error(msg) >= 0) {
|
|
if (netdev->event_filter)
|
|
netdev->event_filter(netdev,
|
|
NETDEV_EVENT_ASSOCIATING,
|
|
NULL,
|
|
netdev->user_data);
|
|
|
|
/*
|
|
* We register the eapol state machine here, in case the PAE
|
|
* socket receives EAPoL packets before the nl80211 socket
|
|
* receives the connected event. The logical sequence of
|
|
* events can be reversed (e.g. connect_event, then PAE data)
|
|
* due to scheduling
|
|
*/
|
|
if (netdev->sm)
|
|
eapol_register(netdev->sm);
|
|
|
|
return;
|
|
}
|
|
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_authenticate(struct netdev *netdev,
|
|
uint32_t auth_type,
|
|
const uint8_t *addr)
|
|
{
|
|
struct handshake_state *hs = netdev->handshake;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_AUTHENTICATE, 512);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ,
|
|
4, &netdev->frequency);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SSID, hs->ssid_len, hs->ssid);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AUTH_TYPE, 4, &auth_type);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IE, hs->supplicant_ie[1] + 2,
|
|
hs->supplicant_ie);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_auth_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("Error sending CMD_AUTHENTICATE");
|
|
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void netdev_assoc_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("Error sending CMD_ASSOCIATE");
|
|
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_sae_tx_authenticate(const uint8_t *body,
|
|
size_t body_len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_authenticate(netdev, NL80211_AUTHTYPE_SAE,
|
|
netdev->handshake->aa);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AUTH_DATA, body_len, body);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_auth_cb, netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_sae_tx_associate(void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
struct iovec iov[2];
|
|
int iov_elems = 0;
|
|
|
|
msg = netdev_build_cmd_associate_common(netdev);
|
|
|
|
iov[iov_elems].iov_base = netdev->handshake->supplicant_ie;
|
|
iov[iov_elems].iov_len = netdev->handshake->supplicant_ie[1] + 2;
|
|
iov_elems++;
|
|
|
|
if (netdev->handshake->mde) {
|
|
iov[iov_elems].iov_base = netdev->handshake->mde;
|
|
iov[iov_elems].iov_len = netdev->handshake->mde[1] + 2;
|
|
iov_elems++;
|
|
}
|
|
|
|
l_genl_msg_append_attrv(msg, NL80211_ATTR_IE, iov, iov_elems);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_assoc_cb, netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_owe_tx_authenticate(void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_authenticate(netdev,
|
|
NL80211_AUTHTYPE_OPEN_SYSTEM,
|
|
netdev->handshake->aa);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_auth_cb,
|
|
netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_owe_tx_associate(struct iovec *ie_iov, size_t iov_len,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_associate_common(netdev);
|
|
|
|
l_genl_msg_append_attrv(msg, NL80211_ATTR_IE, ie_iov, iov_len);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_assoc_cb,
|
|
netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_fils_tx_authenticate(const uint8_t *body,
|
|
size_t body_len,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_authenticate(netdev, NL80211_AUTHTYPE_FILS_SK,
|
|
netdev->handshake->aa);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AUTH_DATA, body_len, body);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_auth_cb,
|
|
netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_fils_tx_associate(struct iovec *iov, size_t iov_len,
|
|
const uint8_t *kek, size_t kek_len,
|
|
const uint8_t *nonces, size_t nonces_len,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_associate_common(netdev);
|
|
|
|
l_genl_msg_append_attrv(msg, NL80211_ATTR_IE, iov, iov_len);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_FILS_KEK, kek_len, kek);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_FILS_NONCES, nonces_len, nonces);
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_assoc_cb,
|
|
netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_connect(struct netdev *netdev,
|
|
struct scan_bss *bss,
|
|
struct handshake_state *hs,
|
|
const uint8_t *prev_bssid,
|
|
const struct iovec *vendor_ies,
|
|
size_t num_vendor_ies)
|
|
{
|
|
uint32_t auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
|
|
struct l_genl_msg *msg;
|
|
struct iovec iov[4 + num_vendor_ies];
|
|
int iov_elems = 0;
|
|
bool is_rsn = hs->supplicant_ie != NULL;
|
|
const uint8_t *extended_capabilities;
|
|
const uint8_t *rm_enabled_capabilities;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_CONNECT, 512);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ,
|
|
4, &bss->frequency);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, bss->addr);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SSID,
|
|
bss->ssid_len, bss->ssid);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AUTH_TYPE, 4, &auth_type);
|
|
|
|
if (prev_bssid)
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
|
|
prev_bssid);
|
|
|
|
if (bss->capability & IE_BSS_CAP_PRIVACY)
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_PRIVACY, 0, NULL);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SOCKET_OWNER, 0, NULL);
|
|
|
|
if (is_rsn) {
|
|
uint32_t nl_cipher;
|
|
uint32_t nl_akm;
|
|
uint32_t wpa_version;
|
|
|
|
if (hs->pairwise_cipher == IE_RSN_CIPHER_SUITE_CCMP)
|
|
nl_cipher = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
nl_cipher = CRYPTO_CIPHER_TKIP;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
|
|
4, &nl_cipher);
|
|
|
|
if (hs->group_cipher == IE_RSN_CIPHER_SUITE_CCMP)
|
|
nl_cipher = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
nl_cipher = CRYPTO_CIPHER_TKIP;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
|
|
4, &nl_cipher);
|
|
|
|
if (hs->mfp) {
|
|
uint32_t use_mfp = NL80211_MFP_REQUIRED;
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_USE_MFP,
|
|
4, &use_mfp);
|
|
}
|
|
|
|
nl_akm = ie_rsn_akm_suite_to_nl80211(hs->akm_suite);
|
|
if (nl_akm)
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AKM_SUITES,
|
|
4, &nl_akm);
|
|
|
|
if (hs->wpa_ie)
|
|
wpa_version = NL80211_WPA_VERSION_1;
|
|
else
|
|
wpa_version = NL80211_WPA_VERSION_2;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WPA_VERSIONS,
|
|
4, &wpa_version);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT, 0, NULL);
|
|
|
|
iov[iov_elems].iov_base = (void *) hs->supplicant_ie;
|
|
iov[iov_elems].iov_len = hs->supplicant_ie[1] + 2;
|
|
iov_elems += 1;
|
|
}
|
|
|
|
if (netdev->pae_over_nl80211)
|
|
l_genl_msg_append_attr(msg,
|
|
NL80211_ATTR_CONTROL_PORT_OVER_NL80211,
|
|
0, NULL);
|
|
|
|
rm_enabled_capabilities =
|
|
wiphy_get_rm_enabled_capabilities(netdev->wiphy);
|
|
if (rm_enabled_capabilities && bss->capability & IE_BSS_CAP_RM) {
|
|
iov[iov_elems].iov_base = (void *) rm_enabled_capabilities;
|
|
iov[iov_elems].iov_len = rm_enabled_capabilities[1] + 2;
|
|
iov_elems += 1;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_USE_RRM, 0, NULL);
|
|
}
|
|
|
|
if (hs->mde) {
|
|
iov[iov_elems].iov_base = (void *) hs->mde;
|
|
iov[iov_elems].iov_len = hs->mde[1] + 2;
|
|
iov_elems += 1;
|
|
}
|
|
|
|
/*
|
|
* This element should be added after MDE
|
|
* See 802.11-2016, Section 9.3.3.6
|
|
*/
|
|
extended_capabilities = wiphy_get_extended_capabilities(netdev->wiphy,
|
|
netdev->type);
|
|
iov[iov_elems].iov_base = (void *) extended_capabilities;
|
|
iov[iov_elems].iov_len = extended_capabilities[1] + 2;
|
|
iov_elems += 1;
|
|
|
|
if (vendor_ies) {
|
|
memcpy(iov + iov_elems, vendor_ies,
|
|
sizeof(*vendor_ies) * num_vendor_ies);
|
|
iov_elems += num_vendor_ies;
|
|
}
|
|
|
|
if (iov_elems)
|
|
l_genl_msg_append_attrv(msg, NL80211_ATTR_IE, iov, iov_elems);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static int netdev_connect_common(struct netdev *netdev,
|
|
struct l_genl_msg *cmd_connect,
|
|
struct scan_bss *bss,
|
|
struct handshake_state *hs,
|
|
struct eapol_sm *sm,
|
|
netdev_event_func_t event_filter,
|
|
netdev_connect_cb_t cb, void *user_data)
|
|
{
|
|
if (cmd_connect) {
|
|
netdev->connect_cmd_id = l_genl_family_send(nl80211,
|
|
cmd_connect, netdev_cmd_connect_cb,
|
|
netdev, NULL);
|
|
|
|
if (!netdev->connect_cmd_id) {
|
|
l_genl_msg_unref(cmd_connect);
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
netdev->event_filter = event_filter;
|
|
netdev->connect_cb = cb;
|
|
netdev->user_data = user_data;
|
|
netdev->connected = true;
|
|
netdev->handshake = hs;
|
|
netdev->sm = sm;
|
|
netdev->frequency = bss->frequency;
|
|
netdev->cur_rssi_low = false; /* Gets udpated on the 1st CQM event */
|
|
netdev->cur_rssi = bss->signal_strength / 100;
|
|
netdev_rssi_level_init(netdev);
|
|
|
|
handshake_state_set_authenticator_address(hs, bss->addr);
|
|
handshake_state_set_supplicant_address(hs, netdev->addr);
|
|
|
|
if (!wiphy_has_ext_feature(netdev->wiphy,
|
|
NL80211_EXT_FEATURE_CAN_REPLACE_PTK0))
|
|
handshake_state_set_no_rekey(hs, true);
|
|
|
|
auth_proto_start(netdev->ap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int netdev_connect(struct netdev *netdev, struct scan_bss *bss,
|
|
struct handshake_state *hs,
|
|
const struct iovec *vendor_ies,
|
|
size_t num_vendor_ies,
|
|
netdev_event_func_t event_filter,
|
|
netdev_connect_cb_t cb, void *user_data)
|
|
{
|
|
struct l_genl_msg *cmd_connect = NULL;
|
|
struct eapol_sm *sm = NULL;
|
|
bool is_rsn = hs->supplicant_ie != NULL;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_STATION)
|
|
return -ENOTSUP;
|
|
|
|
if (netdev->connected)
|
|
return -EISCONN;
|
|
|
|
switch (hs->akm_suite) {
|
|
case IE_RSN_AKM_SUITE_SAE_SHA256:
|
|
case IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256:
|
|
netdev->ap = sae_sm_new(hs, netdev_sae_tx_authenticate,
|
|
netdev_sae_tx_associate,
|
|
netdev);
|
|
break;
|
|
case IE_RSN_AKM_SUITE_OWE:
|
|
netdev->ap = owe_sm_new(hs, netdev_owe_tx_authenticate,
|
|
netdev_owe_tx_associate,
|
|
netdev);
|
|
break;
|
|
case IE_RSN_AKM_SUITE_FILS_SHA256:
|
|
case IE_RSN_AKM_SUITE_FILS_SHA384:
|
|
case IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA256:
|
|
case IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA384:
|
|
netdev->ap = fils_sm_new(hs, netdev_fils_tx_authenticate,
|
|
netdev_fils_tx_associate,
|
|
netdev);
|
|
break;
|
|
default:
|
|
cmd_connect = netdev_build_cmd_connect(netdev, bss, hs,
|
|
NULL, vendor_ies, num_vendor_ies);
|
|
|
|
if (!cmd_connect)
|
|
return -EINVAL;
|
|
|
|
if (is_rsn)
|
|
sm = eapol_sm_new(hs);
|
|
}
|
|
|
|
return netdev_connect_common(netdev, cmd_connect, bss, hs, sm,
|
|
event_filter, cb, user_data);
|
|
}
|
|
|
|
int netdev_connect_wsc(struct netdev *netdev, struct scan_bss *bss,
|
|
struct handshake_state *hs,
|
|
netdev_event_func_t event_filter,
|
|
netdev_connect_cb_t cb,
|
|
netdev_eapol_event_func_t eapol_cb,
|
|
void *user_data)
|
|
{
|
|
struct l_genl_msg *cmd_connect;
|
|
struct wsc_association_request request;
|
|
uint8_t *pdu;
|
|
size_t pdu_len;
|
|
void *ie;
|
|
size_t ie_len;
|
|
struct eapol_sm *sm;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_STATION)
|
|
return -ENOTSUP;
|
|
|
|
if (netdev->connected)
|
|
return -EISCONN;
|
|
|
|
cmd_connect = netdev_build_cmd_connect(netdev, bss, hs, NULL, NULL, 0);
|
|
if (!cmd_connect)
|
|
return -EINVAL;
|
|
|
|
request.version2 = true;
|
|
request.request_type = WSC_REQUEST_TYPE_ENROLLEE_OPEN_8021X;
|
|
|
|
pdu = wsc_build_association_request(&request, &pdu_len);
|
|
if (!pdu)
|
|
goto error;
|
|
|
|
ie = ie_tlv_encapsulate_wsc_payload(pdu, pdu_len, &ie_len);
|
|
l_free(pdu);
|
|
|
|
if (!ie)
|
|
goto error;
|
|
|
|
l_genl_msg_append_attr(cmd_connect, NL80211_ATTR_IE, ie_len, ie);
|
|
l_free(ie);
|
|
|
|
sm = eapol_sm_new(hs);
|
|
eapol_sm_set_user_data(sm, user_data);
|
|
eapol_sm_set_event_func(sm, eapol_cb);
|
|
|
|
return netdev_connect_common(netdev, cmd_connect, bss, hs, sm,
|
|
event_filter, cb, user_data);
|
|
|
|
error:
|
|
l_genl_msg_unref(cmd_connect);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int netdev_disconnect(struct netdev *netdev,
|
|
netdev_disconnect_cb_t cb, void *user_data)
|
|
{
|
|
struct l_genl_msg *disconnect;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_STATION)
|
|
return -ENOTSUP;
|
|
|
|
if (!netdev->connected)
|
|
return -ENOTCONN;
|
|
|
|
if (netdev->disconnect_cmd_id)
|
|
return -EINPROGRESS;
|
|
|
|
/* Only perform this if we haven't successfully fully associated yet */
|
|
if (!netdev->operational) {
|
|
if (netdev->connect_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->connect_cmd_id);
|
|
netdev->connect_cmd_id = 0;
|
|
}
|
|
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ABORTED,
|
|
MMPDU_REASON_CODE_UNSPECIFIED);
|
|
} else {
|
|
netdev_connect_free(netdev);
|
|
}
|
|
|
|
disconnect = netdev_build_cmd_disconnect(netdev,
|
|
MMPDU_REASON_CODE_DEAUTH_LEAVING);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, disconnect,
|
|
netdev_cmd_disconnect_cb, netdev, NULL);
|
|
|
|
if (!netdev->disconnect_cmd_id) {
|
|
l_genl_msg_unref(disconnect);
|
|
return -EIO;
|
|
}
|
|
|
|
netdev->disconnect_cb = cb;
|
|
netdev->user_data = user_data;
|
|
netdev->aborting = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int netdev_reassociate(struct netdev *netdev, struct scan_bss *target_bss,
|
|
struct scan_bss *orig_bss, struct handshake_state *hs,
|
|
netdev_event_func_t event_filter,
|
|
netdev_connect_cb_t cb, void *user_data)
|
|
{
|
|
struct l_genl_msg *cmd_connect;
|
|
struct netdev_handshake_state;
|
|
struct handshake_state *old_hs;
|
|
struct eapol_sm *sm = NULL, *old_sm;
|
|
bool is_rsn = hs->supplicant_ie != NULL;
|
|
int err;
|
|
|
|
cmd_connect = netdev_build_cmd_connect(netdev, target_bss, hs,
|
|
orig_bss->addr, NULL, 0);
|
|
if (!cmd_connect)
|
|
return -EINVAL;
|
|
|
|
if (is_rsn)
|
|
sm = eapol_sm_new(hs);
|
|
|
|
old_sm = netdev->sm;
|
|
old_hs = netdev->handshake;
|
|
|
|
err = netdev_connect_common(netdev, cmd_connect, target_bss, hs, sm,
|
|
event_filter, cb, user_data);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
memcpy(netdev->prev_bssid, orig_bss->addr, ETH_ALEN);
|
|
|
|
netdev->operational = false;
|
|
|
|
netdev_rssi_polling_update(netdev);
|
|
|
|
if (old_sm)
|
|
eapol_sm_free(old_sm);
|
|
|
|
if (old_hs)
|
|
handshake_state_free(old_hs);
|
|
|
|
return err;
|
|
}
|
|
|
|
static void netdev_join_adhoc_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->join_adhoc_cmd_id = 0;
|
|
|
|
if (netdev->adhoc_cb)
|
|
netdev->adhoc_cb(netdev, l_genl_msg_get_error(msg),
|
|
netdev->user_data);
|
|
}
|
|
|
|
int netdev_join_adhoc(struct netdev *netdev, const char *ssid,
|
|
struct iovec *extra_ie, size_t extra_ie_elems,
|
|
bool control_port, netdev_command_cb_t cb,
|
|
void *user_data)
|
|
{
|
|
struct l_genl_msg *cmd;
|
|
uint32_t ifindex = netdev->index;
|
|
uint32_t ch_freq = scan_channel_to_freq(6, SCAN_BAND_2_4_GHZ);
|
|
uint32_t ch_type = NL80211_CHAN_HT20;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_ADHOC) {
|
|
l_error("iftype is invalid for adhoc: %u",
|
|
netdev_get_iftype(netdev));
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
if (netdev->join_adhoc_cmd_id || netdev->leave_adhoc_cmd_id)
|
|
return -EBUSY;
|
|
|
|
netdev->adhoc_cb = cb;
|
|
netdev->user_data = user_data;
|
|
|
|
cmd = l_genl_msg_new_sized(NL80211_CMD_JOIN_IBSS, 128);
|
|
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_IFINDEX, 4, &ifindex);
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_SSID, strlen(ssid), ssid);
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_WIPHY_FREQ, 4, &ch_freq);
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 4,
|
|
&ch_type);
|
|
l_genl_msg_append_attrv(cmd, NL80211_ATTR_IE, extra_ie, extra_ie_elems);
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_SOCKET_OWNER, 0, NULL);
|
|
|
|
if (control_port) {
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_CONTROL_PORT, 0, NULL);
|
|
|
|
if (netdev->pae_over_nl80211)
|
|
l_genl_msg_append_attr(cmd,
|
|
NL80211_ATTR_CONTROL_PORT_OVER_NL80211,
|
|
0, NULL);
|
|
}
|
|
|
|
netdev->join_adhoc_cmd_id = l_genl_family_send(nl80211, cmd,
|
|
netdev_join_adhoc_cb, netdev, NULL);
|
|
|
|
if (!netdev->join_adhoc_cmd_id) {
|
|
netdev->adhoc_cb = NULL;
|
|
netdev->user_data = NULL;
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_leave_adhoc_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->leave_adhoc_cmd_id = 0;
|
|
|
|
if (netdev->adhoc_cb)
|
|
netdev->adhoc_cb(netdev, l_genl_msg_get_error(msg),
|
|
netdev->user_data);
|
|
|
|
netdev->adhoc_cb = NULL;
|
|
}
|
|
|
|
int netdev_leave_adhoc(struct netdev *netdev, netdev_command_cb_t cb,
|
|
void *user_data)
|
|
{
|
|
struct l_genl_msg *cmd;
|
|
|
|
if (netdev->type != NL80211_IFTYPE_ADHOC) {
|
|
l_error("iftype is invalid for adhoc: %u",
|
|
netdev_get_iftype(netdev));
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
if (netdev->join_adhoc_cmd_id || netdev->leave_adhoc_cmd_id)
|
|
return -EBUSY;
|
|
|
|
netdev->adhoc_cb = cb;
|
|
netdev->user_data = user_data;
|
|
|
|
cmd = l_genl_msg_new_sized(NL80211_CMD_LEAVE_IBSS, 64);
|
|
|
|
l_genl_msg_append_attr(cmd, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
|
|
netdev->leave_adhoc_cmd_id = l_genl_family_send(nl80211, cmd,
|
|
netdev_leave_adhoc_cb, netdev,
|
|
NULL);
|
|
|
|
if (!netdev->leave_adhoc_cmd_id)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static uint32_t netdev_send_action_framev(struct netdev *netdev,
|
|
const uint8_t *to,
|
|
struct iovec *iov, size_t iov_len,
|
|
uint32_t freq,
|
|
l_genl_msg_func_t callback)
|
|
{
|
|
uint32_t id;
|
|
struct l_genl_msg *msg = nl80211_build_cmd_frame(netdev->index,
|
|
netdev->addr,
|
|
to, freq,
|
|
iov, iov_len);
|
|
|
|
id = l_genl_family_send(nl80211, msg, callback, netdev, NULL);
|
|
|
|
if (!id)
|
|
l_genl_msg_unref(msg);
|
|
|
|
return id;
|
|
}
|
|
|
|
static uint32_t netdev_send_action_frame(struct netdev *netdev,
|
|
const uint8_t *to,
|
|
const uint8_t *body, size_t body_len,
|
|
uint32_t freq,
|
|
l_genl_msg_func_t callback)
|
|
{
|
|
struct iovec iov[1];
|
|
|
|
iov[0].iov_base = (void *)body;
|
|
iov[0].iov_len = body_len;
|
|
|
|
return netdev_send_action_framev(netdev, to, iov, 1, freq, callback);
|
|
}
|
|
|
|
/*
|
|
* Build an FT Authentication Request frame according to 12.5.2 / 12.5.4:
|
|
* RSN or non-RSN Over-the-air FT Protocol, with the IE contents
|
|
* according to 12.8.2: FT authentication sequence: contents of first message.
|
|
*/
|
|
static struct l_genl_msg *netdev_build_cmd_ft_authenticate(
|
|
struct netdev *netdev,
|
|
const struct handshake_state *hs)
|
|
{
|
|
uint32_t auth_type = NL80211_AUTHTYPE_FT;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_AUTHENTICATE, 512);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ,
|
|
4, &netdev->frequency);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, hs->aa);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_SSID, hs->ssid_len, hs->ssid);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_AUTH_TYPE, 4, &auth_type);
|
|
|
|
return msg;
|
|
|
|
}
|
|
|
|
static void netdev_cmd_authenticate_ft_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->connect_cmd_id = 0;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0)
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
|
|
static void netdev_ft_tx_authenticate(struct iovec *iov,
|
|
size_t iov_len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *cmd_authenticate;
|
|
|
|
cmd_authenticate = netdev_build_cmd_ft_authenticate(netdev,
|
|
netdev->handshake);
|
|
if (!cmd_authenticate)
|
|
goto restore_snonce;
|
|
|
|
l_genl_msg_append_attrv(cmd_authenticate, NL80211_ATTR_IE, iov,
|
|
iov_len);
|
|
|
|
netdev->connect_cmd_id = l_genl_family_send(nl80211,
|
|
cmd_authenticate,
|
|
netdev_cmd_authenticate_ft_cb,
|
|
netdev, NULL);
|
|
if (!netdev->connect_cmd_id) {
|
|
l_genl_msg_unref(cmd_authenticate);
|
|
goto restore_snonce;
|
|
}
|
|
|
|
return;
|
|
|
|
restore_snonce:
|
|
memcpy(netdev->handshake->snonce, netdev->prev_snonce, 32);
|
|
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
|
|
static void netdev_ft_tx_associate(struct iovec *ie_iov, size_t iov_len,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = netdev_build_cmd_associate_common(netdev);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
|
|
netdev->prev_bssid);
|
|
l_genl_msg_append_attrv(msg, NL80211_ATTR_IE, ie_iov, iov_len);
|
|
|
|
netdev->connect_cmd_id = l_genl_family_send(nl80211, msg,
|
|
netdev_cmd_ft_reassociate_cb,
|
|
netdev, NULL);
|
|
if (!netdev->connect_cmd_id) {
|
|
l_genl_msg_unref(msg);
|
|
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_ASSOCIATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void netdev_ft_request_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("Could not send CMD_FRAME");
|
|
netdev_connect_failed(netdev,
|
|
NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
MMPDU_STATUS_CODE_UNSPECIFIED);
|
|
}
|
|
}
|
|
|
|
static void netdev_ft_response_frame_event(struct netdev *netdev,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
void *user_data)
|
|
{
|
|
int ret;
|
|
uint16_t status_code = MMPDU_STATUS_CODE_UNSPECIFIED;
|
|
|
|
if (!netdev->ap || !netdev->in_ft)
|
|
return;
|
|
|
|
ret = auth_proto_rx_authenticate(netdev->ap, body, body_len);
|
|
if (ret < 0)
|
|
goto ft_error;
|
|
else if (ret > 0) {
|
|
status_code = (uint16_t)ret;
|
|
goto ft_error;
|
|
}
|
|
|
|
return;
|
|
|
|
ft_error:
|
|
netdev_connect_failed(netdev, NETDEV_RESULT_AUTHENTICATION_FAILED,
|
|
status_code);
|
|
return;
|
|
}
|
|
|
|
static void netdev_qos_map_frame_event(struct netdev *netdev,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
void *user_data)
|
|
{
|
|
/* No point telling the kernel */
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
if (memcmp(netdev->handshake->aa, hdr->address_2, ETH_ALEN))
|
|
return;
|
|
|
|
if (body_len < 5)
|
|
return;
|
|
|
|
if (l_get_u8(body + 2) != IE_TYPE_QOS_MAP_SET)
|
|
return;
|
|
|
|
netdev_send_qos_map_set(netdev, body + 4, body_len - 4);
|
|
}
|
|
|
|
static void netdev_ft_over_ds_tx_authenticate(struct iovec *iov,
|
|
size_t iov_len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
uint8_t ft_req[14];
|
|
struct handshake_state *hs = netdev->handshake;
|
|
struct iovec iovs[iov_len + 1];
|
|
|
|
ft_req[0] = 6; /* FT category */
|
|
ft_req[1] = 1; /* FT Request action */
|
|
memcpy(ft_req + 2, netdev->addr, 6);
|
|
memcpy(ft_req + 8, hs->aa, 6);
|
|
|
|
iovs[0].iov_base = ft_req;
|
|
iovs[0].iov_len = sizeof(ft_req);
|
|
memcpy(iovs + 1, iov, sizeof(*iov) * iov_len);
|
|
|
|
netdev_send_action_framev(netdev, netdev->prev_bssid, iovs, iov_len + 1,
|
|
netdev->prev_frequency,
|
|
netdev_ft_request_cb);
|
|
}
|
|
|
|
static int fast_transition(struct netdev *netdev, struct scan_bss *target_bss,
|
|
bool over_air,
|
|
netdev_connect_cb_t cb)
|
|
{
|
|
struct netdev_handshake_state *nhs;
|
|
int err = -EINVAL;
|
|
|
|
if (!netdev->operational)
|
|
return -ENOTCONN;
|
|
|
|
if (!netdev->handshake->mde || !target_bss->mde_present ||
|
|
l_get_le16(netdev->handshake->mde + 2) !=
|
|
l_get_le16(target_bss->mde))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* We reuse the handshake_state object and reset what's needed.
|
|
* Could also create a new object and copy most of the state but
|
|
* we would end up doing more work.
|
|
*/
|
|
memcpy(netdev->prev_bssid, netdev->handshake->aa, ETH_ALEN);
|
|
memcpy(netdev->prev_snonce, netdev->handshake->snonce, 32);
|
|
|
|
handshake_state_new_snonce(netdev->handshake);
|
|
|
|
netdev->prev_frequency = netdev->frequency;
|
|
netdev->frequency = target_bss->frequency;
|
|
|
|
handshake_state_set_authenticator_address(netdev->handshake,
|
|
target_bss->addr);
|
|
|
|
if (target_bss->rsne)
|
|
handshake_state_set_authenticator_ie(netdev->handshake,
|
|
target_bss->rsne);
|
|
memcpy(netdev->handshake->mde + 2, target_bss->mde, 3);
|
|
|
|
netdev->operational = false;
|
|
netdev->in_ft = true;
|
|
netdev->connect_cb = cb;
|
|
|
|
/*
|
|
* Cancel commands that could be running because of EAPoL activity
|
|
* like re-keying, this way the callbacks for those commands don't
|
|
* have to check if failures resulted from the transition.
|
|
*/
|
|
nhs = l_container_of(netdev->handshake,
|
|
struct netdev_handshake_state, super);
|
|
|
|
/* reset key states just as we do in initialization */
|
|
nhs->complete = false;
|
|
nhs->ptk_installed = false;
|
|
nhs->gtk_installed = true;
|
|
nhs->igtk_installed = true;
|
|
|
|
if (nhs->group_new_key_cmd_id) {
|
|
l_genl_family_cancel(nl80211, nhs->group_new_key_cmd_id);
|
|
nhs->group_new_key_cmd_id = 0;
|
|
}
|
|
|
|
if (nhs->group_management_new_key_cmd_id) {
|
|
l_genl_family_cancel(nl80211,
|
|
nhs->group_management_new_key_cmd_id);
|
|
nhs->group_management_new_key_cmd_id = 0;
|
|
}
|
|
|
|
if (netdev->rekey_offload_cmd_id) {
|
|
l_genl_family_cancel(nl80211, netdev->rekey_offload_cmd_id);
|
|
netdev->rekey_offload_cmd_id = 0;
|
|
}
|
|
|
|
netdev_rssi_polling_update(netdev);
|
|
|
|
if (netdev->sm) {
|
|
eapol_sm_free(netdev->sm);
|
|
netdev->sm = NULL;
|
|
}
|
|
|
|
if (over_air)
|
|
netdev->ap = ft_over_air_sm_new(netdev->handshake,
|
|
netdev_ft_tx_authenticate,
|
|
netdev_ft_tx_associate, netdev);
|
|
else
|
|
netdev->ap = ft_over_ds_sm_new(netdev->handshake,
|
|
netdev_ft_over_ds_tx_authenticate,
|
|
netdev_ft_tx_associate, netdev);
|
|
|
|
if (!auth_proto_start(netdev->ap))
|
|
goto restore_snonce;
|
|
|
|
return 0;
|
|
|
|
restore_snonce:
|
|
memcpy(netdev->handshake->snonce, netdev->prev_snonce, 32);
|
|
|
|
return err;
|
|
}
|
|
|
|
int netdev_fast_transition(struct netdev *netdev, struct scan_bss *target_bss,
|
|
netdev_connect_cb_t cb)
|
|
{
|
|
return fast_transition(netdev, target_bss, true, cb);
|
|
}
|
|
|
|
int netdev_fast_transition_over_ds(struct netdev *netdev,
|
|
struct scan_bss *target_bss,
|
|
netdev_connect_cb_t cb)
|
|
{
|
|
return fast_transition(netdev, target_bss, false, cb);
|
|
}
|
|
|
|
static void netdev_preauth_cb(const uint8_t *pmk, void *user_data)
|
|
{
|
|
struct netdev_preauth_state *preauth = user_data;
|
|
netdev_preauthenticate_cb_t cb = preauth->cb;
|
|
|
|
preauth->cb = NULL;
|
|
|
|
cb(preauth->netdev,
|
|
pmk ? NETDEV_RESULT_OK : NETDEV_RESULT_HANDSHAKE_FAILED,
|
|
pmk, preauth->user_data);
|
|
}
|
|
|
|
int netdev_preauthenticate(struct netdev *netdev, struct scan_bss *target_bss,
|
|
netdev_preauthenticate_cb_t cb, void *user_data)
|
|
{
|
|
struct netdev_preauth_state *preauth;
|
|
|
|
if (!netdev->operational)
|
|
return -ENOTCONN;
|
|
|
|
preauth = l_new(struct netdev_preauth_state, 1);
|
|
|
|
if (!eapol_preauth_start(target_bss->addr, netdev->handshake,
|
|
netdev_preauth_cb, preauth,
|
|
netdev_preauth_destroy)) {
|
|
l_free(preauth);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
preauth->cb = cb;
|
|
preauth->user_data = user_data;
|
|
preauth->netdev = netdev;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_neighbor_report_req_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (!netdev->neighbor_report_cb)
|
|
return;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
netdev->neighbor_report_cb(netdev, l_genl_msg_get_error(msg),
|
|
NULL, 0, netdev->user_data);
|
|
|
|
netdev->neighbor_report_cb = NULL;
|
|
|
|
l_timeout_remove(netdev->neighbor_report_timeout);
|
|
}
|
|
}
|
|
|
|
static void netdev_neighbor_report_timeout(struct l_timeout *timeout,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->neighbor_report_cb(netdev, -ETIMEDOUT, NULL, 0,
|
|
netdev->user_data);
|
|
|
|
netdev->neighbor_report_cb = NULL;
|
|
|
|
l_timeout_remove(netdev->neighbor_report_timeout);
|
|
}
|
|
|
|
int netdev_neighbor_report_req(struct netdev *netdev,
|
|
netdev_neighbor_report_cb_t cb)
|
|
{
|
|
const uint8_t action_frame[] = {
|
|
0x05, /* Category: Radio Measurement */
|
|
0x04, /* Radio Measurement Action: Neighbor Report Request */
|
|
0x01, /* Dialog Token: a non-zero value (unused) */
|
|
};
|
|
|
|
if (netdev->neighbor_report_cb || !netdev->connected)
|
|
return -EBUSY;
|
|
|
|
if (!netdev_send_action_frame(netdev, netdev->handshake->aa,
|
|
action_frame, sizeof(action_frame),
|
|
netdev->frequency,
|
|
netdev_neighbor_report_req_cb))
|
|
return -EIO;
|
|
|
|
netdev->neighbor_report_cb = cb;
|
|
|
|
/* Set a 3-second timeout */
|
|
netdev->neighbor_report_timeout =
|
|
l_timeout_create(3, netdev_neighbor_report_timeout,
|
|
netdev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_neighbor_report_frame_event(struct netdev *netdev,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
void *user_data)
|
|
{
|
|
if (body_len < 3) {
|
|
l_debug("Neighbor Report frame too short");
|
|
return;
|
|
}
|
|
|
|
if (!netdev->neighbor_report_cb)
|
|
return;
|
|
|
|
/*
|
|
* Don't use the dialog token (byte 3), return the first Neighbor
|
|
* Report Response received.
|
|
*
|
|
* Byte 1 is 0x05 for Radio Measurement, byte 2 is 0x05 for
|
|
* Neighbor Report.
|
|
*/
|
|
|
|
netdev->neighbor_report_cb(netdev, 0, body + 3, body_len - 3,
|
|
netdev->user_data);
|
|
netdev->neighbor_report_cb = NULL;
|
|
|
|
l_timeout_remove(netdev->neighbor_report_timeout);
|
|
}
|
|
|
|
static void netdev_sa_query_resp_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
if (l_genl_msg_get_error(msg) < 0)
|
|
l_debug("error sending SA Query request");
|
|
}
|
|
|
|
static void netdev_sa_query_req_frame_event(struct netdev *netdev,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
void *user_data)
|
|
{
|
|
uint8_t sa_resp[4];
|
|
uint16_t transaction;
|
|
|
|
if (body_len < 4) {
|
|
l_debug("SA Query request too short");
|
|
return;
|
|
}
|
|
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
/* only care about SA Queries from our connected AP */
|
|
if (memcmp(hdr->address_2, netdev->handshake->aa, 6))
|
|
return;
|
|
|
|
transaction = l_get_u16(body + 2);
|
|
|
|
sa_resp[0] = 0x08; /* SA Query */
|
|
sa_resp[1] = 0x01; /* Response */
|
|
memcpy(sa_resp + 2, &transaction, 2);
|
|
|
|
l_info("received SA Query request from "MAC", transaction=%u",
|
|
MAC_STR(hdr->address_2), transaction);
|
|
|
|
if (!netdev_send_action_frame(netdev, netdev->handshake->aa,
|
|
sa_resp, sizeof(sa_resp),
|
|
netdev->frequency,
|
|
netdev_sa_query_resp_cb)) {
|
|
l_error("error sending SA Query response");
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void netdev_sa_query_resp_frame_event(struct netdev *netdev,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
void *user_data)
|
|
{
|
|
if (body_len < 4) {
|
|
l_debug("SA Query frame too short");
|
|
return;
|
|
}
|
|
|
|
l_debug("SA Query src="MAC" dest="MAC" bssid="MAC" transaction=%u",
|
|
MAC_STR(hdr->address_2), MAC_STR(hdr->address_1),
|
|
MAC_STR(hdr->address_3), l_get_u16(body + 2));
|
|
|
|
if (!netdev->sa_query_timeout) {
|
|
l_debug("no SA Query request sent");
|
|
return;
|
|
}
|
|
|
|
/* check if this is from our connected BSS */
|
|
if (memcmp(hdr->address_2, netdev->handshake->aa, 6)) {
|
|
l_debug("received SA Query from non-connected AP");
|
|
return;
|
|
}
|
|
|
|
if (memcmp(body + 2, &netdev->sa_query_id, 2)) {
|
|
l_debug("SA Query transaction ID's did not match");
|
|
return;
|
|
}
|
|
|
|
l_info("SA Query response from connected BSS received, "
|
|
"keeping the connection active");
|
|
|
|
l_timeout_remove(netdev->sa_query_timeout);
|
|
netdev->sa_query_timeout = NULL;
|
|
}
|
|
|
|
static void netdev_sa_query_req_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_debug("error sending SA Query request");
|
|
|
|
l_timeout_remove(netdev->sa_query_timeout);
|
|
netdev->sa_query_timeout = NULL;
|
|
}
|
|
}
|
|
|
|
static void netdev_sa_query_timeout(struct l_timeout *timeout,
|
|
void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
l_info("SA Query timed out, connection is invalid. Disconnecting...");
|
|
|
|
l_timeout_remove(netdev->sa_query_timeout);
|
|
netdev->sa_query_timeout = NULL;
|
|
|
|
msg = netdev_build_cmd_disconnect(netdev,
|
|
MMPDU_REASON_CODE_PREV_AUTH_NOT_VALID);
|
|
netdev->disconnect_cmd_id = l_genl_family_send(nl80211, msg,
|
|
netdev_disconnect_cb, netdev, NULL);
|
|
}
|
|
|
|
static void netdev_unprot_disconnect_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
const struct mmpdu_header *hdr = NULL;
|
|
struct l_genl_attr attr;
|
|
uint16_t type;
|
|
uint16_t len;
|
|
const void *data;
|
|
uint8_t action_frame[4];
|
|
uint8_t reason_code;
|
|
|
|
if (!netdev->connected)
|
|
return;
|
|
|
|
/* ignore excessive disassociate requests */
|
|
if (netdev->sa_query_timeout)
|
|
return;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_FRAME:
|
|
hdr = mpdu_validate(data, len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* check that ATTR_FRAME was actually included */
|
|
if (!hdr)
|
|
return;
|
|
|
|
/* get reason code, first byte of frame */
|
|
reason_code = l_get_u8(mmpdu_body(hdr));
|
|
|
|
l_info("disconnect event, src="MAC" dest="MAC" bssid="MAC" reason=%u",
|
|
MAC_STR(hdr->address_2), MAC_STR(hdr->address_1),
|
|
MAC_STR(hdr->address_3), reason_code);
|
|
|
|
if (memcmp(hdr->address_2, netdev->handshake->aa, 6)) {
|
|
l_debug("received invalid disassociate frame");
|
|
return;
|
|
}
|
|
|
|
if (reason_code != MMPDU_REASON_CODE_CLASS2_FRAME_FROM_NONAUTH_STA &&
|
|
reason_code !=
|
|
MMPDU_REASON_CODE_CLASS3_FRAME_FROM_NONASSOC_STA) {
|
|
l_debug("invalid reason code %u", reason_code);
|
|
return;
|
|
}
|
|
|
|
action_frame[0] = 0x08; /* Category: SA Query */
|
|
action_frame[1] = 0x00; /* SA Query Action: Request */
|
|
|
|
/* Transaction ID */
|
|
l_getrandom(action_frame + 2, 2);
|
|
|
|
if (!netdev_send_action_frame(netdev, netdev->handshake->aa,
|
|
action_frame, sizeof(action_frame),
|
|
netdev->frequency,
|
|
netdev_sa_query_req_cb)) {
|
|
l_error("error sending SA Query action frame");
|
|
return;
|
|
}
|
|
|
|
netdev->sa_query_id = l_get_u16(action_frame + 2);
|
|
netdev->sa_query_timeout = l_timeout_create(3,
|
|
netdev_sa_query_timeout, netdev, NULL);
|
|
}
|
|
|
|
static void netdev_station_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev, bool added)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type;
|
|
uint16_t len;
|
|
const void *data;
|
|
const uint8_t *mac = NULL;
|
|
|
|
if (netdev_get_iftype(netdev) != NETDEV_IFTYPE_ADHOC)
|
|
return;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_MAC:
|
|
mac = data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!mac) {
|
|
l_error("%s station event did not include MAC attribute",
|
|
added ? "new" : "del");
|
|
return;
|
|
}
|
|
|
|
WATCHLIST_NOTIFY(&netdev->station_watches,
|
|
netdev_station_watch_func_t, netdev, mac, added);
|
|
}
|
|
|
|
static void netdev_mlme_notify(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = NULL;
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint8_t cmd;
|
|
|
|
cmd = l_genl_msg_get_command(msg);
|
|
|
|
l_debug("MLME notification %s(%u)", nl80211cmd_to_string(cmd), cmd);
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_IFINDEX:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface index attribute");
|
|
return;
|
|
}
|
|
|
|
netdev = netdev_find(*((uint32_t *) data));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!netdev) {
|
|
l_warn("MLME notification is missing ifindex attribute");
|
|
return;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case NL80211_CMD_AUTHENTICATE:
|
|
netdev_authenticate_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_DEAUTHENTICATE:
|
|
netdev_deauthenticate_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_ASSOCIATE:
|
|
netdev_associate_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_CONNECT:
|
|
netdev_connect_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_DISCONNECT:
|
|
netdev_disconnect_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_NOTIFY_CQM:
|
|
netdev_cqm_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_SET_REKEY_OFFLOAD:
|
|
netdev_rekey_offload_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_UNPROT_DEAUTHENTICATE:
|
|
case NL80211_CMD_UNPROT_DISASSOCIATE:
|
|
netdev_unprot_disconnect_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_NEW_STATION:
|
|
netdev_station_event(msg, netdev, true);
|
|
break;
|
|
case NL80211_CMD_DEL_STATION:
|
|
netdev_station_event(msg, netdev, false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
struct frame_prefix_info {
|
|
uint16_t frame_type;
|
|
const uint8_t *body;
|
|
size_t body_len;
|
|
};
|
|
|
|
static bool netdev_frame_watch_match_prefix(const void *a, const void *b)
|
|
{
|
|
const struct watchlist_item *item = a;
|
|
const struct netdev_frame_watch *fw =
|
|
l_container_of(item, struct netdev_frame_watch, super);
|
|
const struct frame_prefix_info *info = b;
|
|
|
|
return fw->frame_type == info->frame_type &&
|
|
fw->prefix_len <= info->body_len &&
|
|
(fw->prefix_len == 0 ||
|
|
!memcmp(fw->prefix, info->body, fw->prefix_len));
|
|
}
|
|
|
|
static void netdev_mgmt_frame_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len, frame_len;
|
|
const void *data;
|
|
const struct mmpdu_header *mpdu = NULL;
|
|
const uint8_t *body;
|
|
struct frame_prefix_info info;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_FRAME:
|
|
if (mpdu)
|
|
return;
|
|
|
|
mpdu = mpdu_validate(data, len);
|
|
if (!mpdu)
|
|
l_error("Frame didn't validate as MMPDU");
|
|
|
|
frame_len = len;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!mpdu)
|
|
return;
|
|
|
|
body = mmpdu_body(mpdu);
|
|
|
|
if (memcmp(mpdu->address_1, netdev->addr, 6) &&
|
|
!util_is_broadcast_address(mpdu->address_1))
|
|
return;
|
|
|
|
/* Only match the frame type and subtype like the kernel does */
|
|
#define FC_FTYPE_STYPE_MASK 0x00fc
|
|
info.frame_type = l_get_le16(mpdu) & FC_FTYPE_STYPE_MASK;
|
|
info.body = (const uint8_t *) body;
|
|
info.body_len = (const uint8_t *) mpdu + frame_len - body;
|
|
|
|
WATCHLIST_NOTIFY_MATCHES(&netdev->frame_watches,
|
|
netdev_frame_watch_match_prefix, &info,
|
|
netdev_frame_watch_func_t,
|
|
netdev, mpdu, body, info.body_len);
|
|
}
|
|
|
|
static void netdev_pae_destroy(void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->pae_io = NULL;
|
|
}
|
|
|
|
static bool netdev_pae_read(struct l_io *io, void *user_data)
|
|
{
|
|
int fd = l_io_get_fd(io);
|
|
struct sockaddr_ll sll;
|
|
socklen_t sll_len;
|
|
ssize_t bytes;
|
|
uint8_t frame[IEEE80211_MAX_DATA_LEN];
|
|
|
|
memset(&sll, 0, sizeof(sll));
|
|
sll_len = sizeof(sll);
|
|
|
|
bytes = recvfrom(fd, frame, sizeof(frame), 0,
|
|
(struct sockaddr *) &sll, &sll_len);
|
|
if (bytes <= 0) {
|
|
l_error("EAPoL read socket: %s", strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
if (sll.sll_halen != ETH_ALEN)
|
|
return true;
|
|
|
|
__eapol_rx_packet(sll.sll_ifindex, sll.sll_addr,
|
|
ntohs(sll.sll_protocol), frame, bytes, false);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void netdev_control_port_frame_event(struct l_genl_msg *msg,
|
|
struct netdev *netdev)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type;
|
|
uint16_t len;
|
|
const void *data;
|
|
const uint8_t *frame = NULL;
|
|
uint16_t frame_len = 0;
|
|
const uint8_t *src = NULL;
|
|
uint16_t proto = 0;
|
|
bool unencrypted = false;
|
|
|
|
l_debug("");
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_FRAME:
|
|
if (frame)
|
|
return;
|
|
|
|
frame = data;
|
|
frame_len = len;
|
|
break;
|
|
case NL80211_ATTR_MAC:
|
|
if (src)
|
|
return;
|
|
|
|
src = data;
|
|
break;
|
|
case NL80211_ATTR_CONTROL_PORT_ETHERTYPE:
|
|
if (len != sizeof(proto))
|
|
return;
|
|
|
|
proto = *((const uint16_t *) data);
|
|
break;
|
|
case NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT:
|
|
unencrypted = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!src || !frame || !proto)
|
|
return;
|
|
|
|
__eapol_rx_packet(netdev->index, src, proto,
|
|
frame, frame_len, unencrypted);
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_control_port_frame(struct netdev *netdev,
|
|
const uint8_t *to,
|
|
uint16_t proto,
|
|
bool unencrypted,
|
|
const void *body,
|
|
size_t body_len)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_CONTROL_PORT_FRAME,
|
|
128 + body_len);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_FRAME, body_len, body);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, 2,
|
|
&proto);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, to);
|
|
|
|
if (unencrypted)
|
|
l_genl_msg_append_attr(msg,
|
|
NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT, 0, NULL);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_control_port_frame_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
int err;
|
|
|
|
err = l_genl_msg_get_error(msg);
|
|
|
|
l_debug("%d", err);
|
|
|
|
if (err < 0)
|
|
l_info("CMD_CONTROL_PORT failed: %s", strerror(-err));
|
|
}
|
|
|
|
static int netdev_control_port_write_pae(struct netdev *netdev,
|
|
const uint8_t *dest,
|
|
uint16_t proto,
|
|
const struct eapol_frame *ef,
|
|
bool noencrypt)
|
|
{
|
|
int fd = l_io_get_fd(netdev->pae_io);
|
|
struct sockaddr_ll sll;
|
|
size_t frame_size = sizeof(struct eapol_header) +
|
|
L_BE16_TO_CPU(ef->header.packet_len);
|
|
ssize_t r;
|
|
|
|
memset(&sll, 0, sizeof(sll));
|
|
sll.sll_family = AF_PACKET;
|
|
sll.sll_ifindex = netdev->index;
|
|
sll.sll_protocol = htons(proto);
|
|
sll.sll_halen = ETH_ALEN;
|
|
memcpy(sll.sll_addr, dest, ETH_ALEN);
|
|
|
|
r = sendto(fd, ef, frame_size, 0,
|
|
(struct sockaddr *) &sll, sizeof(sll));
|
|
if (r < 0)
|
|
l_error("EAPoL write socket: %s", strerror(errno));
|
|
|
|
return r;
|
|
}
|
|
|
|
static int netdev_control_port_frame(uint32_t ifindex,
|
|
const uint8_t *dest, uint16_t proto,
|
|
const struct eapol_frame *ef,
|
|
bool noencrypt,
|
|
void *user_data)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
struct netdev *netdev;
|
|
size_t frame_size;
|
|
|
|
netdev = netdev_find(ifindex);
|
|
if (!netdev)
|
|
return -ENOENT;
|
|
|
|
frame_size = sizeof(struct eapol_header) +
|
|
L_BE16_TO_CPU(ef->header.packet_len);
|
|
|
|
if (!netdev->pae_over_nl80211)
|
|
return netdev_control_port_write_pae(netdev, dest, proto,
|
|
ef, noencrypt);
|
|
|
|
msg = netdev_build_control_port_frame(netdev, dest, proto, noencrypt,
|
|
ef, frame_size);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_control_port_frame_cb,
|
|
netdev, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void netdev_unicast_notify(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev *netdev = NULL;
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint8_t cmd;
|
|
|
|
cmd = l_genl_msg_get_command(msg);
|
|
if (!cmd)
|
|
return;
|
|
|
|
l_debug("Unicast notification %u", cmd);
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_IFINDEX:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface index attribute");
|
|
return;
|
|
}
|
|
|
|
netdev = netdev_find(*((uint32_t *) data));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!netdev)
|
|
return;
|
|
|
|
switch (cmd) {
|
|
case NL80211_CMD_FRAME:
|
|
netdev_mgmt_frame_event(msg, netdev);
|
|
break;
|
|
case NL80211_CMD_CONTROL_PORT_FRAME:
|
|
netdev_control_port_frame_event(msg, netdev);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_cqm_rssi_update(
|
|
struct netdev *netdev,
|
|
const int8_t *levels,
|
|
size_t levels_num)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
uint32_t hyst = 5;
|
|
int thold_count;
|
|
int32_t thold_list[levels_num + 2];
|
|
|
|
if (levels_num == 0) {
|
|
thold_list[0] = LOW_SIGNAL_THRESHOLD;
|
|
thold_count = 1;
|
|
} else {
|
|
/*
|
|
* Build the list of all the threshold values we care about:
|
|
* - the low/high level threshold,
|
|
* - the value ranges requested by
|
|
* netdev_set_rssi_report_levels
|
|
*/
|
|
unsigned int i;
|
|
bool low_sig_added = false;
|
|
|
|
thold_count = 0;
|
|
for (i = 0; i < levels_num; i++) {
|
|
int32_t val = levels[levels_num - i - 1];
|
|
|
|
if (i && thold_list[thold_count - 1] >= val)
|
|
return NULL;
|
|
|
|
if (val >= LOW_SIGNAL_THRESHOLD && !low_sig_added) {
|
|
thold_list[thold_count++] =
|
|
LOW_SIGNAL_THRESHOLD;
|
|
low_sig_added = true;
|
|
|
|
/* Duplicate values are not allowed */
|
|
if (val == LOW_SIGNAL_THRESHOLD)
|
|
continue;
|
|
}
|
|
|
|
thold_list[thold_count++] = val;
|
|
}
|
|
}
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_CQM, 32 + thold_count * 4);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_enter_nested(msg, NL80211_ATTR_CQM);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_THOLD,
|
|
thold_count * 4, thold_list);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_CQM_RSSI_HYST, 4, &hyst);
|
|
l_genl_msg_leave_nested(msg);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void netdev_cmd_set_cqm_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
int r = l_genl_msg_get_error(msg);
|
|
|
|
if (!r)
|
|
return;
|
|
|
|
l_error("CMD_SET_CQM failed: %d(%s)", r, strerror(-r));
|
|
}
|
|
|
|
int netdev_set_rssi_report_levels(struct netdev *netdev, const int8_t *levels,
|
|
size_t levels_num)
|
|
{
|
|
struct l_genl_msg *cmd_set_cqm;
|
|
|
|
l_debug("ifindex: %d, num_levels: %zu", netdev->index, levels_num);
|
|
|
|
if (levels_num > L_ARRAY_SIZE(netdev->rssi_levels))
|
|
return -ENOSPC;
|
|
|
|
if (!wiphy_has_ext_feature(netdev->wiphy,
|
|
NL80211_EXT_FEATURE_CQM_RSSI_LIST))
|
|
goto done;
|
|
|
|
cmd_set_cqm = netdev_build_cmd_cqm_rssi_update(netdev, levels,
|
|
levels_num);
|
|
if (!cmd_set_cqm)
|
|
return -EINVAL;
|
|
|
|
if (!l_genl_family_send(nl80211, cmd_set_cqm, netdev_cmd_set_cqm_cb,
|
|
NULL, NULL)) {
|
|
l_genl_msg_unref(cmd_set_cqm);
|
|
return -EIO;
|
|
}
|
|
|
|
done:
|
|
if (levels_num)
|
|
memcpy(netdev->rssi_levels, levels, levels_num);
|
|
|
|
netdev->rssi_levels_num = levels_num;
|
|
netdev_rssi_level_init(netdev);
|
|
|
|
netdev_rssi_polling_update(netdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int netdev_cqm_rssi_update(struct netdev *netdev)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
l_debug("");
|
|
|
|
if (!wiphy_has_ext_feature(netdev->wiphy,
|
|
NL80211_EXT_FEATURE_CQM_RSSI_LIST))
|
|
return 0;
|
|
|
|
msg = netdev_build_cmd_cqm_rssi_update(netdev, netdev->rssi_levels,
|
|
netdev->rssi_levels_num);
|
|
if (!msg)
|
|
return -EINVAL;
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_cmd_set_cqm_cb,
|
|
NULL, NULL)) {
|
|
l_genl_msg_unref(msg);
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct l_genl_msg *netdev_build_cmd_set_interface(struct netdev *netdev,
|
|
uint32_t iftype)
|
|
{
|
|
struct l_genl_msg *msg =
|
|
l_genl_msg_new_sized(NL80211_CMD_SET_INTERFACE, 32);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFTYPE, 4, &iftype);
|
|
|
|
return msg;
|
|
}
|
|
|
|
struct netdev_set_iftype_request {
|
|
netdev_command_cb_t cb;
|
|
void *user_data;
|
|
netdev_destroy_func_t destroy;
|
|
uint32_t pending_type;
|
|
uint32_t ref;
|
|
struct netdev *netdev;
|
|
bool bring_up;
|
|
};
|
|
|
|
static void netdev_set_iftype_request_destroy(void *user_data)
|
|
{
|
|
struct netdev_set_iftype_request *req = user_data;
|
|
struct netdev *netdev = req->netdev;
|
|
|
|
req->ref--;
|
|
if (req->ref)
|
|
return;
|
|
|
|
netdev->set_powered_cmd_id = 0;
|
|
netdev->set_interface_cmd_id = 0;
|
|
|
|
if (req->destroy)
|
|
req->destroy(req->user_data);
|
|
|
|
l_free(req);
|
|
}
|
|
|
|
static void netdev_set_iftype_up_cb(int error, uint16_t type,
|
|
const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
struct netdev_set_iftype_request *req = user_data;
|
|
struct netdev *netdev = req->netdev;
|
|
|
|
if (req->cb)
|
|
req->cb(netdev, error, req->user_data);
|
|
}
|
|
|
|
static void netdev_set_iftype_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct netdev_set_iftype_request *req = user_data;
|
|
struct netdev *netdev = req->netdev;
|
|
int error = l_genl_msg_get_error(msg);
|
|
|
|
if (error != 0)
|
|
goto done;
|
|
|
|
netdev->type = req->pending_type;
|
|
|
|
/* Set RSSI threshold for CQM notifications */
|
|
if (netdev->type == NL80211_IFTYPE_STATION)
|
|
netdev_cqm_rssi_update(netdev);
|
|
|
|
/* If the netdev was down originally, we're done */
|
|
if (!req->bring_up)
|
|
goto done;
|
|
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_powered(netdev->index, true,
|
|
netdev_set_iftype_up_cb, req,
|
|
netdev_set_iftype_request_destroy);
|
|
if (!netdev->set_powered_cmd_id) {
|
|
error = -EIO;
|
|
goto done;
|
|
}
|
|
|
|
req->ref++;
|
|
netdev->set_interface_cmd_id = 0;
|
|
return;
|
|
|
|
done:
|
|
if (req->cb)
|
|
req->cb(netdev, error, req->user_data);
|
|
}
|
|
|
|
static void netdev_set_iftype_down_cb(int error, uint16_t type,
|
|
const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
struct netdev_set_iftype_request *req = user_data;
|
|
struct netdev *netdev = req->netdev;
|
|
struct l_genl_msg *msg;
|
|
|
|
if (error != 0)
|
|
goto error;
|
|
|
|
msg = netdev_build_cmd_set_interface(netdev, req->pending_type);
|
|
netdev->set_interface_cmd_id =
|
|
l_genl_family_send(nl80211, msg, netdev_set_iftype_cb, req,
|
|
netdev_set_iftype_request_destroy);
|
|
if (!netdev->set_interface_cmd_id) {
|
|
l_genl_msg_unref(msg);
|
|
error = -EIO;
|
|
goto error;
|
|
}
|
|
|
|
req->ref++;
|
|
netdev->set_powered_cmd_id = 0;
|
|
return;
|
|
|
|
error:
|
|
if (req->cb)
|
|
req->cb(netdev, error, req->user_data);
|
|
}
|
|
|
|
int netdev_set_iftype(struct netdev *netdev, enum netdev_iftype type,
|
|
netdev_command_cb_t cb, void *user_data,
|
|
netdev_destroy_func_t destroy)
|
|
{
|
|
uint32_t iftype;
|
|
struct netdev_set_iftype_request *req;
|
|
|
|
switch (type) {
|
|
case NETDEV_IFTYPE_AP:
|
|
iftype = NL80211_IFTYPE_AP;
|
|
break;
|
|
case NETDEV_IFTYPE_ADHOC:
|
|
iftype = NL80211_IFTYPE_ADHOC;
|
|
break;
|
|
case NETDEV_IFTYPE_STATION:
|
|
iftype = NL80211_IFTYPE_STATION;
|
|
break;
|
|
default:
|
|
l_error("unsupported iftype %u", type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (netdev->set_powered_cmd_id ||
|
|
netdev->set_interface_cmd_id)
|
|
return -EBUSY;
|
|
|
|
req = l_new(struct netdev_set_iftype_request, 1);
|
|
req->cb = cb;
|
|
req->user_data = user_data;
|
|
req->destroy = destroy;
|
|
req->pending_type = iftype;
|
|
req->netdev = netdev;
|
|
req->ref = 1;
|
|
req->bring_up = netdev_get_is_up(netdev);
|
|
|
|
if (!req->bring_up) {
|
|
struct l_genl_msg *msg =
|
|
netdev_build_cmd_set_interface(netdev, iftype);
|
|
|
|
netdev->set_interface_cmd_id =
|
|
l_genl_family_send(nl80211, msg,
|
|
netdev_set_iftype_cb, req,
|
|
netdev_set_iftype_request_destroy);
|
|
if (netdev->set_interface_cmd_id)
|
|
return 0;
|
|
|
|
l_genl_msg_unref(msg);
|
|
} else {
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_powered(netdev->index, false,
|
|
netdev_set_iftype_down_cb, req,
|
|
netdev_set_iftype_request_destroy);
|
|
if (netdev->set_powered_cmd_id)
|
|
return 0;
|
|
}
|
|
|
|
l_free(req);
|
|
return -EIO;
|
|
}
|
|
|
|
static void netdev_bridge_port_event(const struct ifinfomsg *ifi, int bytes,
|
|
bool added)
|
|
{
|
|
struct netdev *netdev;
|
|
struct rtattr *attr;
|
|
uint32_t master = 0;
|
|
|
|
netdev = netdev_find(ifi->ifi_index);
|
|
if (!netdev)
|
|
return;
|
|
|
|
for (attr = IFLA_RTA(ifi); RTA_OK(attr, bytes);
|
|
attr = RTA_NEXT(attr, bytes)) {
|
|
switch (attr->rta_type) {
|
|
case IFLA_MASTER:
|
|
memcpy(&master, RTA_DATA(attr), sizeof(master));
|
|
break;
|
|
}
|
|
}
|
|
|
|
l_debug("netdev: %d %s bridge: %d", ifi->ifi_index,
|
|
(added ? "added to" : "removed from"), master);
|
|
}
|
|
|
|
struct set_4addr_cb_data {
|
|
struct netdev *netdev;
|
|
bool value;
|
|
netdev_command_cb_t callback;
|
|
void *user_data;
|
|
netdev_destroy_func_t destroy;
|
|
};
|
|
|
|
static void netdev_set_4addr_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct set_4addr_cb_data *cb_data = user_data;
|
|
int error = l_genl_msg_get_error(msg);
|
|
|
|
if (!cb_data)
|
|
return;
|
|
|
|
/* cache the value that has just been set */
|
|
if (!error)
|
|
cb_data->netdev->use_4addr = cb_data->value;
|
|
|
|
cb_data->callback(cb_data->netdev, error, cb_data->user_data);
|
|
}
|
|
|
|
static void netdev_set_4addr_destroy(void *user_data)
|
|
{
|
|
struct set_4addr_cb_data *cb_data = user_data;
|
|
|
|
if (!cb_data)
|
|
return;
|
|
|
|
if (cb_data->destroy)
|
|
cb_data->destroy(cb_data->user_data);
|
|
|
|
l_free(cb_data);
|
|
}
|
|
|
|
int netdev_set_4addr(struct netdev *netdev, bool use_4addr,
|
|
netdev_command_cb_t cb, void *user_data,
|
|
netdev_destroy_func_t destroy)
|
|
{
|
|
struct set_4addr_cb_data *cb_data = NULL;
|
|
uint8_t attr_4addr = (use_4addr ? 1 : 0);
|
|
struct l_genl_msg *msg;
|
|
|
|
l_debug("netdev: %d use_4addr: %d", netdev->index, use_4addr);
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_INTERFACE, 32);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_4ADDR, 1, &attr_4addr);
|
|
|
|
if (cb) {
|
|
cb_data = l_new(struct set_4addr_cb_data, 1);
|
|
cb_data->netdev = netdev;
|
|
cb_data->value = use_4addr;
|
|
cb_data->callback = cb;
|
|
cb_data->user_data = user_data;
|
|
cb_data->destroy = destroy;
|
|
}
|
|
|
|
if (!l_genl_family_send(nl80211, msg, netdev_set_4addr_cb, cb_data,
|
|
netdev_set_4addr_destroy)) {
|
|
l_error("CMD_SET_INTERFACE (4addr) failed");
|
|
|
|
l_genl_msg_unref(msg);
|
|
l_free(cb_data);
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool netdev_get_4addr(struct netdev *netdev)
|
|
{
|
|
return netdev->use_4addr;
|
|
}
|
|
|
|
static void netdev_newlink_notify(const struct ifinfomsg *ifi, int bytes)
|
|
{
|
|
struct netdev *netdev;
|
|
bool old_up, new_up;
|
|
char old_name[IFNAMSIZ];
|
|
uint8_t old_addr[ETH_ALEN];
|
|
struct rtattr *attr;
|
|
|
|
if (ifi->ifi_family == AF_BRIDGE) {
|
|
netdev_bridge_port_event(ifi, bytes, true);
|
|
return;
|
|
}
|
|
|
|
netdev = netdev_find(ifi->ifi_index);
|
|
if (!netdev)
|
|
return;
|
|
|
|
old_up = netdev_get_is_up(netdev);
|
|
strcpy(old_name, netdev->name);
|
|
memcpy(old_addr, netdev->addr, ETH_ALEN);
|
|
|
|
netdev->ifi_flags = ifi->ifi_flags;
|
|
|
|
for (attr = IFLA_RTA(ifi); RTA_OK(attr, bytes);
|
|
attr = RTA_NEXT(attr, bytes)) {
|
|
switch (attr->rta_type) {
|
|
case IFLA_IFNAME:
|
|
strcpy(netdev->name, RTA_DATA(attr));
|
|
break;
|
|
case IFLA_ADDRESS:
|
|
if (RTA_PAYLOAD(attr) < ETH_ALEN)
|
|
break;
|
|
|
|
memcpy(netdev->addr, RTA_DATA(attr), ETH_ALEN);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!netdev->device) /* Did we send NETDEV_WATCH_EVENT_NEW yet? */
|
|
return;
|
|
|
|
new_up = netdev_get_is_up(netdev);
|
|
|
|
if (old_up != new_up)
|
|
WATCHLIST_NOTIFY(&netdev_watches, netdev_watch_func_t,
|
|
netdev, new_up ? NETDEV_WATCH_EVENT_UP :
|
|
NETDEV_WATCH_EVENT_DOWN);
|
|
|
|
if (strcmp(old_name, netdev->name))
|
|
WATCHLIST_NOTIFY(&netdev_watches, netdev_watch_func_t,
|
|
netdev, NETDEV_WATCH_EVENT_NAME_CHANGE);
|
|
|
|
if (memcmp(old_addr, netdev->addr, ETH_ALEN))
|
|
WATCHLIST_NOTIFY(&netdev_watches, netdev_watch_func_t,
|
|
netdev, NETDEV_WATCH_EVENT_ADDRESS_CHANGE);
|
|
}
|
|
|
|
static void netdev_dellink_notify(const struct ifinfomsg *ifi, int bytes)
|
|
{
|
|
struct netdev *netdev;
|
|
|
|
if (ifi->ifi_family == AF_BRIDGE) {
|
|
netdev_bridge_port_event(ifi, bytes, false);
|
|
return;
|
|
}
|
|
|
|
netdev = l_queue_remove_if(netdev_list, netdev_match,
|
|
L_UINT_TO_PTR(ifi->ifi_index));
|
|
if (!netdev)
|
|
return;
|
|
|
|
netdev_free(netdev);
|
|
}
|
|
|
|
static void netdev_initial_up_cb(int error, uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
netdev->set_powered_cmd_id = 0;
|
|
|
|
if (!error)
|
|
netdev->ifi_flags |= IFF_UP;
|
|
else {
|
|
l_error("Error bringing interface %i up: %s", netdev->index,
|
|
strerror(-error));
|
|
|
|
if (error != -ERFKILL)
|
|
return;
|
|
}
|
|
|
|
rtnl_set_linkmode_and_operstate(rtnl, netdev->index,
|
|
IF_LINK_MODE_DORMANT, IF_OPER_DOWN,
|
|
netdev_operstate_cb,
|
|
L_UINT_TO_PTR(netdev->index), NULL);
|
|
|
|
/*
|
|
* we don't know the initial status of the 4addr property on this
|
|
* netdev, therefore we set it to zero by default.
|
|
*/
|
|
netdev_set_4addr(netdev, netdev->use_4addr, NULL, NULL, NULL);
|
|
|
|
l_debug("Interface %i initialized", netdev->index);
|
|
|
|
netdev->device = device_create(netdev->wiphy, netdev);
|
|
WATCHLIST_NOTIFY(&netdev_watches, netdev_watch_func_t,
|
|
netdev, NETDEV_WATCH_EVENT_NEW);
|
|
}
|
|
|
|
static void netdev_set_mac_cb(int error, uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (error)
|
|
l_error("Error setting mac address on %d: %s", netdev->index,
|
|
strerror(-error));
|
|
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_powered(netdev->index, true, netdev_initial_up_cb,
|
|
netdev, NULL);
|
|
}
|
|
|
|
static void netdev_initial_down_cb(int error, uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
struct netdev *netdev = user_data;
|
|
|
|
if (!error)
|
|
netdev->ifi_flags &= ~IFF_UP;
|
|
else {
|
|
l_error("Error taking interface %i down: %s", netdev->index,
|
|
strerror(-error));
|
|
|
|
netdev->set_powered_cmd_id = 0;
|
|
return;
|
|
}
|
|
|
|
if (netdev->mac_randomize_once) {
|
|
uint8_t addr[ETH_ALEN];
|
|
|
|
wiphy_generate_random_address(netdev->wiphy, addr);
|
|
l_debug("Setting initial random address on "
|
|
"ifindex: %d to: "MAC, netdev->index, MAC_STR(addr));
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_mac(rtnl, netdev->index, addr,
|
|
netdev_set_mac_cb, netdev, NULL);
|
|
return;
|
|
}
|
|
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_powered(netdev->index, true, netdev_initial_up_cb,
|
|
netdev, NULL);
|
|
}
|
|
|
|
static void netdev_getlink_cb(int error, uint16_t type, const void *data,
|
|
uint32_t len, void *user_data)
|
|
{
|
|
const struct ifinfomsg *ifi = data;
|
|
unsigned int bytes;
|
|
struct netdev *netdev;
|
|
l_netlink_command_func_t cb;
|
|
bool powered;
|
|
|
|
if (error != 0) {
|
|
l_error("RTM_GETLINK error %i: %s", error, strerror(-error));
|
|
return;
|
|
}
|
|
|
|
if (ifi->ifi_type != ARPHRD_ETHER || type != RTM_NEWLINK) {
|
|
l_debug("Non-ethernet address or not newlink message -- "
|
|
"ifi_type: %i, type: %i", ifi->ifi_type, type);
|
|
return;
|
|
}
|
|
|
|
netdev = netdev_find(ifi->ifi_index);
|
|
if (!netdev)
|
|
return;
|
|
|
|
bytes = len - NLMSG_ALIGN(sizeof(struct ifinfomsg));
|
|
|
|
netdev_newlink_notify(ifi, bytes);
|
|
|
|
/*
|
|
* If the interface is UP, reset it to ensure a clean state.
|
|
* Otherwise, if we need to set a random mac, do so. If not, just
|
|
* bring the interface UP.
|
|
*/
|
|
powered = netdev_get_is_up(netdev);
|
|
|
|
if (!powered && netdev->mac_randomize_once) {
|
|
uint8_t addr[ETH_ALEN];
|
|
|
|
wiphy_generate_random_address(netdev->wiphy, addr);
|
|
l_debug("Setting initial random address on "
|
|
"ifindex: %d to: "MAC, netdev->index, MAC_STR(addr));
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_mac(rtnl, netdev->index, addr,
|
|
netdev_set_mac_cb, netdev, NULL);
|
|
return;
|
|
}
|
|
|
|
cb = powered ? netdev_initial_down_cb : netdev_initial_up_cb;
|
|
|
|
netdev->set_powered_cmd_id =
|
|
rtnl_set_powered(ifi->ifi_index, !powered, cb, netdev, NULL);
|
|
}
|
|
|
|
static void netdev_frame_watch_free(struct watchlist_item *item)
|
|
{
|
|
struct netdev_frame_watch *fw =
|
|
l_container_of(item, struct netdev_frame_watch, super);
|
|
|
|
l_free(fw->prefix);
|
|
l_free(fw);
|
|
}
|
|
|
|
static const struct watchlist_ops netdev_frame_watch_ops = {
|
|
.item_free = netdev_frame_watch_free,
|
|
};
|
|
|
|
static void netdev_frame_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
if (l_genl_msg_get_error(msg) < 0)
|
|
l_error("Could not register frame watch type %04x: %i",
|
|
L_PTR_TO_UINT(user_data), l_genl_msg_get_error(msg));
|
|
}
|
|
|
|
uint32_t netdev_frame_watch_add(struct netdev *netdev, uint16_t frame_type,
|
|
const uint8_t *prefix, size_t prefix_len,
|
|
netdev_frame_watch_func_t handler,
|
|
void *user_data)
|
|
{
|
|
struct netdev_frame_watch *fw;
|
|
struct l_genl_msg *msg;
|
|
struct frame_prefix_info info = { frame_type, prefix, prefix_len };
|
|
bool registered;
|
|
uint32_t id;
|
|
|
|
registered = l_queue_find(netdev->frame_watches.items,
|
|
netdev_frame_watch_match_prefix,
|
|
&info);
|
|
|
|
fw = l_new(struct netdev_frame_watch, 1);
|
|
fw->frame_type = frame_type;
|
|
fw->prefix = prefix_len ? l_memdup(prefix, prefix_len) : NULL;
|
|
fw->prefix_len = prefix_len;
|
|
id = watchlist_link(&netdev->frame_watches, &fw->super,
|
|
handler, user_data, NULL);
|
|
|
|
if (registered)
|
|
return id;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_REGISTER_FRAME, 32 + prefix_len);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_FRAME_TYPE, 2, &frame_type);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_FRAME_MATCH,
|
|
prefix_len, prefix);
|
|
|
|
l_genl_family_send(nl80211, msg, netdev_frame_cb,
|
|
L_UINT_TO_PTR(frame_type), NULL);
|
|
|
|
return id;
|
|
}
|
|
|
|
bool netdev_frame_watch_remove(struct netdev *netdev, uint32_t id)
|
|
{
|
|
/*
|
|
* There's no way to unregister from notifications but that's not a
|
|
* problem, we leave them active in the kernel but
|
|
* netdev_mgmt_frame_event will ignore these events.
|
|
*/
|
|
return watchlist_remove(&netdev->frame_watches, id);
|
|
}
|
|
|
|
static struct l_io *pae_open(uint32_t ifindex)
|
|
{
|
|
/*
|
|
* BPF filter to match skb->dev->type == 1 (ARPHRD_ETHER) and
|
|
* match skb->protocol == 0x888e (PAE) or 0x88c7 (preauthentication).
|
|
*/
|
|
struct sock_filter pae_filter[] = {
|
|
{ 0x20, 0, 0, 0xfffff008 }, /* ld #ifidx */
|
|
{ 0x15, 0, 6, 0x00000000 }, /* jne #0, drop */
|
|
{ 0x28, 0, 0, 0xfffff01c }, /* ldh #hatype */
|
|
{ 0x15, 0, 4, 0x00000001 }, /* jne #1, drop */
|
|
{ 0x28, 0, 0, 0xfffff000 }, /* ldh #proto */
|
|
{ 0x15, 1, 0, 0x0000888e }, /* je #0x888e, keep */
|
|
{ 0x15, 0, 1, 0x000088c7 }, /* jne #0x88c7, drop */
|
|
{ 0x06, 0, 0, 0xffffffff }, /* keep: ret #-1 */
|
|
{ 0x06, 0, 0, 0000000000 }, /* drop: ret #0 */
|
|
};
|
|
|
|
const struct sock_fprog pae_fprog = {
|
|
.len = L_ARRAY_SIZE(pae_filter),
|
|
.filter = pae_filter
|
|
};
|
|
|
|
struct l_io *io;
|
|
int fd;
|
|
|
|
fd = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
|
|
htons(ETH_P_ALL));
|
|
if (fd < 0)
|
|
return NULL;
|
|
|
|
/*
|
|
* Here we modify the k value in the BPF program above to match the
|
|
* given ifindex. We do it this way instead of using bind to attach
|
|
* to a specific interface index to avoid having to re-open the fd
|
|
* whenever the device is powered down / up
|
|
*/
|
|
|
|
pae_filter[1].k = ifindex;
|
|
|
|
if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER,
|
|
&pae_fprog, sizeof(pae_fprog)) < 0)
|
|
goto error;
|
|
|
|
io = l_io_new(fd);
|
|
l_io_set_close_on_destroy(io, true);
|
|
|
|
return io;
|
|
|
|
error:
|
|
close(fd);
|
|
return NULL;
|
|
}
|
|
|
|
struct netdev *netdev_create_from_genl(struct l_genl_msg *msg, bool random_mac)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
const char *ifname = NULL;
|
|
uint16_t ifname_len = 0;
|
|
const uint8_t *ifaddr = NULL;
|
|
const uint32_t *ifindex = NULL, *iftype = NULL;
|
|
const uint64_t *wdev = NULL;
|
|
struct netdev *netdev;
|
|
struct wiphy *wiphy = NULL;
|
|
struct ifinfomsg *rtmmsg;
|
|
size_t bufsize;
|
|
const uint8_t action_neighbor_report_prefix[2] = { 0x05, 0x05 };
|
|
const uint8_t action_sa_query_resp_prefix[2] = { 0x08, 0x01 };
|
|
const uint8_t action_sa_query_req_prefix[2] = { 0x08, 0x00 };
|
|
const uint8_t action_ft_response_prefix[] = { 0x06, 0x02 };
|
|
const uint8_t action_qos_map_prefix[] = { 0x01, 0x04 };
|
|
struct l_io *pae_io = NULL;
|
|
const struct l_settings *settings = iwd_get_config();
|
|
bool pae_over_nl80211;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return NULL;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_IFINDEX:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface index attribute");
|
|
return NULL;
|
|
}
|
|
|
|
ifindex = data;
|
|
break;
|
|
|
|
case NL80211_ATTR_WDEV:
|
|
if (len != sizeof(uint64_t)) {
|
|
l_warn("Invalid wdev attribute");
|
|
return NULL;
|
|
}
|
|
|
|
wdev = data;
|
|
break;
|
|
|
|
case NL80211_ATTR_IFNAME:
|
|
if (len > IFNAMSIZ) {
|
|
l_warn("Invalid interface name attribute");
|
|
return NULL;
|
|
}
|
|
|
|
ifname = data;
|
|
ifname_len = len;
|
|
break;
|
|
|
|
case NL80211_ATTR_WIPHY:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid wiphy attribute");
|
|
return NULL;
|
|
}
|
|
|
|
wiphy = wiphy_find(*((uint32_t *) data));
|
|
break;
|
|
|
|
case NL80211_ATTR_IFTYPE:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface type attribute");
|
|
return NULL;
|
|
}
|
|
|
|
iftype = data;
|
|
break;
|
|
|
|
case NL80211_ATTR_MAC:
|
|
if (len != ETH_ALEN) {
|
|
l_warn("Invalid interface address attribute");
|
|
return NULL;
|
|
}
|
|
|
|
ifaddr = data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!iftype) {
|
|
l_warn("Missing iftype attribute");
|
|
return NULL;
|
|
}
|
|
|
|
if (!wiphy || !ifindex || !wdev || !ifaddr || !ifname) {
|
|
l_warn("Unable to parse interface information");
|
|
return NULL;
|
|
}
|
|
|
|
if (netdev_find(*ifindex)) {
|
|
l_debug("Skipping duplicate netdev %s[%d]", ifname, *ifindex);
|
|
return NULL;
|
|
}
|
|
|
|
if (!l_settings_get_bool(settings, "General",
|
|
"control_port_over_nl80211",
|
|
&pae_over_nl80211)) {
|
|
if (!l_settings_get_bool(settings, "General",
|
|
"ControlPortOverNL80211", &pae_over_nl80211)) {
|
|
pae_over_nl80211 = true;
|
|
l_info("No control_port_over_nl80211 setting, "
|
|
"defaulting to %s",
|
|
pae_over_nl80211 ? "True" : "False");
|
|
} else
|
|
l_warn("ControlPortOverNL80211 is deprecated, use "
|
|
"'control_port_over_nl80211'");
|
|
}
|
|
|
|
if (!wiphy_has_ext_feature(wiphy,
|
|
NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) {
|
|
l_debug("No Control Port over NL80211 support for ifindex: %u,"
|
|
" using PAE socket", *ifindex);
|
|
pae_over_nl80211 = false;
|
|
}
|
|
|
|
if (!pae_over_nl80211) {
|
|
pae_io = pae_open(*ifindex);
|
|
if (!pae_io) {
|
|
l_error("Unable to open PAE interface");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
netdev = l_new(struct netdev, 1);
|
|
netdev->index = *ifindex;
|
|
netdev->wdev_id = *wdev;
|
|
netdev->type = *iftype;
|
|
netdev->rekey_offload_support = true;
|
|
memcpy(netdev->addr, ifaddr, sizeof(netdev->addr));
|
|
memcpy(netdev->name, ifname, ifname_len);
|
|
netdev->wiphy = wiphy;
|
|
netdev->pae_over_nl80211 = pae_over_nl80211;
|
|
netdev->mac_randomize_once = random_mac;
|
|
|
|
if (pae_io) {
|
|
netdev->pae_io = pae_io;
|
|
l_io_set_read_handler(netdev->pae_io, netdev_pae_read, netdev,
|
|
netdev_pae_destroy);
|
|
}
|
|
|
|
watchlist_init(&netdev->frame_watches, &netdev_frame_watch_ops);
|
|
watchlist_init(&netdev->station_watches, NULL);
|
|
|
|
l_queue_push_tail(netdev_list, netdev);
|
|
|
|
l_debug("Created interface %s[%d %" PRIx64 "]", netdev->name,
|
|
netdev->index, netdev->wdev_id);
|
|
|
|
/* Query interface flags */
|
|
bufsize = NLMSG_ALIGN(sizeof(struct ifinfomsg));
|
|
rtmmsg = l_malloc(bufsize);
|
|
memset(rtmmsg, 0, bufsize);
|
|
|
|
rtmmsg->ifi_family = AF_UNSPEC;
|
|
rtmmsg->ifi_index = *ifindex;
|
|
|
|
l_netlink_send(rtnl, RTM_GETLINK, 0, rtmmsg, bufsize,
|
|
netdev_getlink_cb, NULL, NULL);
|
|
|
|
l_free(rtmmsg);
|
|
|
|
/* Subscribe to Management -> Action -> RM -> Neighbor Report frames */
|
|
netdev_frame_watch_add(netdev, 0x00d0, action_neighbor_report_prefix,
|
|
sizeof(action_neighbor_report_prefix),
|
|
netdev_neighbor_report_frame_event, NULL);
|
|
|
|
netdev_frame_watch_add(netdev, 0x00d0, action_sa_query_resp_prefix,
|
|
sizeof(action_sa_query_resp_prefix),
|
|
netdev_sa_query_resp_frame_event, NULL);
|
|
|
|
netdev_frame_watch_add(netdev, 0x00d0, action_sa_query_req_prefix,
|
|
sizeof(action_sa_query_req_prefix),
|
|
netdev_sa_query_req_frame_event, NULL);
|
|
|
|
netdev_frame_watch_add(netdev, 0x00d0, action_ft_response_prefix,
|
|
sizeof(action_ft_response_prefix),
|
|
netdev_ft_response_frame_event, NULL);
|
|
|
|
if (wiphy_supports_qos_set_map(netdev->wiphy))
|
|
netdev_frame_watch_add(netdev, 0x00d0, action_qos_map_prefix,
|
|
sizeof(action_qos_map_prefix),
|
|
netdev_qos_map_frame_event, NULL);
|
|
|
|
/* Set RSSI threshold for CQM notifications */
|
|
if (netdev->type == NL80211_IFTYPE_STATION)
|
|
netdev_cqm_rssi_update(netdev);
|
|
|
|
return netdev;
|
|
}
|
|
|
|
bool netdev_destroy(struct netdev *netdev)
|
|
{
|
|
if (!l_queue_remove(netdev_list, netdev))
|
|
return false;
|
|
|
|
netdev_free(netdev);
|
|
return true;
|
|
}
|
|
|
|
static void netdev_link_notify(uint16_t type, const void *data, uint32_t len,
|
|
void *user_data)
|
|
{
|
|
const struct ifinfomsg *ifi = data;
|
|
unsigned int bytes;
|
|
|
|
if (ifi->ifi_type != ARPHRD_ETHER)
|
|
return;
|
|
|
|
bytes = len - NLMSG_ALIGN(sizeof(struct ifinfomsg));
|
|
|
|
switch (type) {
|
|
case RTM_NEWLINK:
|
|
netdev_newlink_notify(ifi, bytes);
|
|
break;
|
|
case RTM_DELLINK:
|
|
netdev_dellink_notify(ifi, bytes);
|
|
break;
|
|
}
|
|
}
|
|
|
|
uint32_t netdev_station_watch_add(struct netdev *netdev,
|
|
netdev_station_watch_func_t func, void *user_data)
|
|
{
|
|
return watchlist_add(&netdev->station_watches, func, user_data, NULL);
|
|
}
|
|
|
|
bool netdev_station_watch_remove(struct netdev *netdev, uint32_t id)
|
|
{
|
|
return watchlist_remove(&netdev->station_watches, id);
|
|
}
|
|
|
|
uint32_t netdev_watch_add(netdev_watch_func_t func,
|
|
void *user_data, netdev_destroy_func_t destroy)
|
|
{
|
|
return watchlist_add(&netdev_watches, func, user_data, destroy);
|
|
}
|
|
|
|
bool netdev_watch_remove(uint32_t id)
|
|
{
|
|
return watchlist_remove(&netdev_watches, id);
|
|
}
|
|
|
|
static int netdev_init(void)
|
|
{
|
|
struct l_genl *genl = iwd_get_genl();
|
|
const struct l_settings *settings = iwd_get_config();
|
|
|
|
if (rtnl)
|
|
return -EALREADY;
|
|
|
|
l_debug("Opening route netlink socket");
|
|
|
|
rtnl = l_netlink_new(NETLINK_ROUTE);
|
|
if (!rtnl) {
|
|
l_error("Failed to open route netlink socket");
|
|
return -EIO;
|
|
}
|
|
|
|
if (getenv("IWD_RTNL_DEBUG"))
|
|
l_netlink_set_debug(rtnl, do_debug, "[RTNL] ", NULL);
|
|
|
|
if (!l_netlink_register(rtnl, RTNLGRP_LINK,
|
|
netdev_link_notify, NULL, NULL)) {
|
|
l_error("Failed to register for RTNL link notifications");
|
|
goto fail_netlink;
|
|
}
|
|
|
|
nl80211 = l_genl_family_new(genl, NL80211_GENL_NAME);
|
|
if (!nl80211) {
|
|
l_error("Failed to obtain nl80211");
|
|
goto fail_netlink;
|
|
}
|
|
|
|
if (!l_settings_get_int(settings, "General", "roam_rssi_threshold",
|
|
&LOW_SIGNAL_THRESHOLD))
|
|
LOW_SIGNAL_THRESHOLD = -70;
|
|
|
|
watchlist_init(&netdev_watches, NULL);
|
|
netdev_list = l_queue_new();
|
|
|
|
__handshake_set_install_tk_func(netdev_set_tk);
|
|
__handshake_set_install_gtk_func(netdev_set_gtk);
|
|
__handshake_set_install_igtk_func(netdev_set_igtk);
|
|
|
|
__eapol_set_rekey_offload_func(netdev_set_rekey_offload);
|
|
__eapol_set_tx_packet_func(netdev_control_port_frame);
|
|
|
|
unicast_watch = l_genl_add_unicast_watch(genl, NL80211_GENL_NAME,
|
|
netdev_unicast_notify,
|
|
NULL, NULL);
|
|
if (!unicast_watch)
|
|
l_error("Registering for unicast notification failed");
|
|
|
|
if (!l_genl_family_register(nl80211, "mlme", netdev_mlme_notify,
|
|
NULL, NULL))
|
|
l_error("Registering for MLME notification failed");
|
|
|
|
return 0;
|
|
|
|
fail_netlink:
|
|
l_netlink_destroy(rtnl);
|
|
rtnl = NULL;
|
|
|
|
return -EIO;
|
|
}
|
|
|
|
static void netdev_exit(void)
|
|
{
|
|
struct l_genl *genl = iwd_get_genl();
|
|
|
|
if (!rtnl)
|
|
return;
|
|
|
|
l_genl_remove_unicast_watch(genl, unicast_watch);
|
|
|
|
watchlist_destroy(&netdev_watches);
|
|
|
|
l_genl_family_free(nl80211);
|
|
nl80211 = NULL;
|
|
|
|
l_debug("Closing route netlink socket");
|
|
l_netlink_destroy(rtnl);
|
|
rtnl = NULL;
|
|
}
|
|
|
|
void netdev_shutdown(void)
|
|
{
|
|
if (!rtnl)
|
|
return;
|
|
|
|
l_queue_foreach(netdev_list, netdev_shutdown_one, NULL);
|
|
|
|
l_queue_destroy(netdev_list, netdev_free);
|
|
netdev_list = NULL;
|
|
}
|
|
|
|
IWD_MODULE(netdev, netdev_init, netdev_exit);
|