We used to open a socket for each wireless interface. This patch uses a
single socket with an attached BPF to handle all EAPoL traffic via a
single file descriptor.
CMD_DISCONNECT fails on some occasions when CMD_CONNECT is still
running. When this happens the DBus disconnect command receives an
error reply but iwd's device state is left as disconnected even though
there's a connection at the kernel level which times out a few seconds
later. If the CMD_CONNECT is cancelled I couldn't reproduce this so far.
src/network.c:network_connect()
src/network.c:network_connect_psk()
src/network.c:network_connect_psk() psk:
69ae3f8b2f84a438cf6a44275913182dd2714510ccb8cbdf8da9dc8b61718560
src/network.c:network_connect_psk() len: 32
src/network.c:network_connect_psk() ask_psk: false
src/device.c:device_enter_state() Old State: disconnected, new state:
connecting
src/scan.c:scan_notify() Scan notification 33
src/device.c:device_netdev_event() Associating
src/netdev.c:netdev_mlme_notify() MLME notification 60
MLME notification is missing ifindex attribute
src/device.c:device_dbus_disconnect()
src/device.c:device_connect_cb() 6, result: 5
src/device.c:device_enter_state() Old State: connecting, new state:
disconnecting
src/device.c:device_disconnect_cb() 6, success: 0
src/device.c:device_enter_state() Old State: disconnecting, new state:
disconnected
src/scan.c:scan_notify() Scan notification 34
src/netdev.c:netdev_mlme_notify() MLME notification 19
src/netdev.c:netdev_mlme_notify() MLME notification 60
MLME notification is missing ifindex attribute
src/netdev.c:netdev_mlme_notify() MLME notification 37
src/netdev.c:netdev_authenticate_event()
src/scan.c:get_scan_callback() get_scan_callback
src/scan.c:get_scan_done() get_scan_done
src/netdev.c:netdev_mlme_notify() MLME notification 60
MLME notification is missing ifindex attribute
src/netdev.c:netdev_mlme_notify() MLME notification 19
MLME notification is missing ifindex attribute
src/netdev.c:netdev_mlme_notify() MLME notification 38
src/netdev.c:netdev_associate_event()
src/netdev.c:netdev_mlme_notify() MLME notification 46
src/netdev.c:netdev_connect_event()
<delay>
src/netdev.c:netdev_mlme_notify() MLME notification 60
MLME notification is missing ifindex attribute
src/netdev.c:netdev_mlme_notify() MLME notification 20
MLME notification is missing ifindex attribute
src/netdev.c:netdev_mlme_notify() MLME notification 20
src/netdev.c:netdev_mlme_notify() MLME notification 39
src/netdev.c:netdev_deauthenticate_event()
This is to make sure device_remove and netdev_connect_free are called
early so we don't continue setting up a connection and don't let DBus
clients power device back up after we've called netdev_set_powered.
Prevents situations like this:
src/device.c:device_enter_state() Old State: connecting, new state:
connected
src/scan.c:scan_periodic_stop() Stopping periodic scan for ifindex: 3
src/device.c:device_dbus_disconnect()
src/device.c:device_connect_cb() 3
src/device.c:device_disassociated() 3
src/device.c:device_enter_state() Old State: connected, new state:
autoconnect
Try to make the connect and disconnect operations look more like a
transaction where the callback is always called eventually, also with a
clear indication if the operation is in profress. The connected state
lasts from the start of the connection attempt until the disconnect.
1. Non-null netdev->connected or disconnect_cb indicate that the operation
is active.
2. Every entry-point in netdev.c checks if connected is still set
before executing the next step of the connection setup. CMD_CONNECT and
the subsequent commands may succeed even if CMD_DISCONNECT is called
in the middle so they can't only rely on the error value for that.
3. netdev->connect_cb and other elements of the connection state are
reset by netdev_connect_free which groups the clean-up operations to
make sure we don't miss anything. Since the callback pointers are
reset device.c doesn't need to check that it receives a spurious
event in those callbacks for example after calling netdev_disconnect.
If initial bring up returns ERFKILL proceed and the inteface can be
explicitly brought up by the client once rfkill is disabled.
Also fix the error number returned to netdev_set_powered callback to be
negative as expected by netdev_initial_up_cb.
==3059== 7 bytes in 1 blocks are still reachable in loss record 1 of 2
==3059== at 0x4C2C970: malloc (vg_replace_malloc.c:296)
==3059== by 0x50BB319: strndup (in /lib64/libc-2.22.so)
==3059== by 0x417B4D: l_strndup (util.c:180)
==3059== by 0x417E1B: l_strsplit (util.c:311)
==3059== by 0x4057FC: netdev_init (netdev.c:1658)
==3059== by 0x402E26: nl80211_appeared (main.c:112)
==3059== by 0x41F577: get_family_callback (genl.c:1038)
==3059== by 0x41EE3F: process_unicast (genl.c:390)
==3059== by 0x41EE3F: received_data (genl.c:506)
==3059== by 0x41C6F4: io_callback (io.c:120)
==3059== by 0x41BAA9: l_main_run (main.c:381)
==3059== by 0x402B9C: main (main.c:234)
When a new wiphy is added, the kernel usually adds a default STA
interface as well. This interface is currently not signaled over
nl80211 in any way.
This implements a selective dump of the wiphy interfaces in order to
obtain the newly added netdev. Selective dump is currently not
supported by the kernel, so all netdevs will be returned. A patch on
linux-wireless is pending that implements the selective dump
functionality.
==24934== 16 bytes in 1 blocks are definitely lost in loss record 1 of 1
==24934== at 0x4C2C970: malloc (vg_replace_malloc.c:296)
==24934== by 0x41675D: l_malloc (util.c:62)
==24934== by 0x4033B3: netdev_set_linkmode_and_operstate
(netdev.c:149)
==24934== by 0x4042B9: netdev_free (netdev.c:221)
==24934== by 0x41735D: l_queue_clear (queue.c:107)
==24934== by 0x4173A8: l_queue_destroy (queue.c:82)
==24934== by 0x40543D: netdev_exit (netdev.c:1459)
==24934== by 0x402D6F: nl80211_vanished (main.c:126)
==24934== by 0x41E607: l_genl_family_unref (genl.c:1057)
==24934== by 0x402B50: main (main.c:237)
When setting operstate to dormant or down, give it a callback for debug
purposes. It looks like that operstate down message does not have a
chance to go out currently.
