Add the ip_pool_select_addr4 function to select a random subnet of requested
size from an address space defined by a string list (for use with the
AP profile [IPv4].Address and the global [IPv4].APAddressPool settings),
avoiding those subnets that conflict with subnets in use. We take care
to give a similar weight to all subnets contained in the specified
ranges regardless of how many ranges contain each, basically so that
overlapping ranges don't affect the probabilities (debatable.)
Add the ip-pool submodule that tracks IPv4 addresses in use on the
system for use when selecting the address for a new AP. l_rtnl_address
is used internally because if we're going to return l_rtnl_address
objects it would be misleading if we didn't fill in all of their
properties like flags etc.
If the connected BSS changes channel, netdev will emit an event with the
new channel's frequency. In response, have station change the frequency
of the connected scan_bss struct and inform network about the update.
If the connected BSS announces that it is switching operating channel,
the kernel may emit the NL80211_CMD_CH_SWTICH_NOTIFY event when the
switch is complete. Add a new netdev event NETDEV_EVENT_CHANNEL_SWITCHED
to signal to interested modules that the connected BSS has changed
channel. The event carries a pointer to the new channel's frequency.
NL80211_BSS_LAST_SEEN_BOOTTIME is expressed in nanoseconds, while BSS
timestamps are expressed in microseconds internally. Convert the
attribute to microseconds when using it to timestamp a BSS. This makes
iwd expire absent BSSes within 30 seconds as intended.
Fixes: 454cee12d4 ("scan: Use kernel-reported time-stamp if provided")
Right now, if a connection to a network selected by auto-connect fails,
the entire autoconnect process is restarted. This means that scans are
kicked off again, auto-connect list is rebuilt, etc. This was due to
auto-connect reusing the same failure path as connections triggered via
D-Bus.
The above behavior can lead to weird situations in certain corner cases.
For example, a highly preferred network configured with the wrong
password would result in auto-connect entering an infinite loop.
Fix this by making sure that all auto-connect entries are tried and
exhausted prior to re-scanning again.
The temporary ban list is cleared when a network is connected to
successfully, and also in network_connect_failed. Unfortunately,
network_connect_failed is not called in all paths (i.e. during
autoconnect) since it messes with the state of secrets and passphrases.
Clear the list in network_disconnected() instead, since it is guaranteed
to be called in every circumstance.
This will be effectively the same as the CONNECTING state, but can be
used to enable differing behavior, depending on whether connection was
triggered by autoconnect or via D-Bus.
Code that walked the VHT TX/RX MCS maps seemed to assume that bit_field
operated on bits that start at '1'. But this utility actually operates
on bits that start at '0'. I.e. the least significant bit is at
position 0.
While we're at it, rename the mcs variable into bitoffset to make it
clearer how the maps are being iterated over. Supported MCS is actually
the value found in the map.
This option has not been used in a very long time, and is of limited
utility since the only thing D-Bus debugging does is hexdumps the
content of D-Bus messages to the terminal.
The current calculation was giving erroneous results when it came to VHT
MCS index 4 and VHT MCS index 8 & 9.
Switch to a precomputed look up table and add a multiplication factor
for short GI.
ap_reset() seems to be called whenever the AP is stopped or removed due
to interface shutdown. For some reason ap_reset did not remove the DHCP
server object, resulting in leaks:
==211== at 0x483879F: malloc (vg_replace_malloc.c:307)
==211== by 0x46B5AD: l_malloc (util.c:62)
==211== by 0x49B0E2: l_dhcp_server_new (dhcp-server.c:715)
==211== by 0x433AA3: ap_setup_dhcp (ap.c:2615)
==211== by 0x433AA3: ap_load_dhcp (ap.c:2645)
==211== by 0x433AA3: ap_load_config (ap.c:2753)
==211== by 0x433AA3: ap_start (ap.c:2885)
==211== by 0x434A96: ap_dbus_start_profile (ap.c:3329)
==211== by 0x482DA9: _dbus_object_tree_dispatch (dbus-service.c:1815)
==211== by 0x47A4D9: message_read_handler (dbus.c:285)
==211== by 0x4720EB: io_callback (io.c:120)
==211== by 0x47130C: l_main_iterate (main.c:478)
==211== by 0x4713DB: l_main_run (main.c:525)
==211== by 0x4713DB: l_main_run (main.c:507)
==211== by 0x4715EB: l_main_run_with_signal (main.c:647)
==211== by 0x403EE1: main (main.c:550)
==209== by 0x43E48A: netconfig_ipv4_select_and_install (netconfig.c:887)
==209== by 0x43E48A: netconfig_configure (netconfig.c:1025)
==209== by 0x41743C: station_connect_cb (station.c:2556)
==209== by 0x408E0D: netdev_connect_ok (netdev.c:1311)
==209== by 0x47549E: process_unicast (genl.c:994)
==209== by 0x47549E: received_data (genl.c:1102)
==209== by 0x4720EB: io_callback (io.c:120)
==209== by 0x47130C: l_main_iterate (main.c:478)
==209== by 0x4713DB: l_main_run (main.c:525)
==209== by 0x4713DB: l_main_run (main.c:507)
==209== by 0x4715EB: l_main_run_with_signal (main.c:647)
==209== by 0x403EE1: main (main.c:550)
Prior to the BSS blacklist a BSS based autoconnect list made
the most sense, but now station actually retries all BSS's upon
failure. This means that for each BSS in the autoconnect list
every other BSS under that SSID will be attempted to connect to
if there is a failure. Essentially this is a network based
autoconnect list, just an indirect way of doing it.
Intead the autoconnect list can be purely network based, using
the network rank for sorting. This avoids the need for a special
autoconnect_entry struct as well as ensures the last connected
network is chosen first (simply based on existing network ranking
logic).
It was observed that IWD's ranking for BSS's did not always
end up with the fastest being chosen. This was due to IWD's
heavy weight on signal strength. This is a decent way of ranking
but even better is calculating a theoretical data rate which
was also done and factored in. The problem is the data rate
factor was always outdone by the signal strength.
Intead remove signal strength entirely as this is already taken
into account with the data rate calculation. This also removes
the check for rate IEs. If no IEs are found the parser will
base the data rate soley on RSSI.
There were a few other factors removed which will be added back
when ranking *networks* rather than BSS's. WPA version (or open)
was removed as well as the privacy capability. These values really
should not differ between BSS's in the same SSID and as such
should be used for network ranking instead.
Both ext/supported rates IEs are obtained from scan results. These
IEs are passed to ie_tlv_init/ie_tlv_next, as well as direct length
checks (for supported rates at least, extended supported rates can
be as long as a single byte integer can hold, 1 - 255) which verifies
that the length in the IE matches the overall IE length that is
stored in scan_bss. Because of this, ie_parse_supported_rates_from_data
was doing double duty re-initializing a TLV iterator.
Intead, since we know the IE length is within bounds, the length/data
can simply be directly accessed out of the buffer. This avoids the need
for a wrapper function entirely.
The length parameters were also removed, since this is now obtained
directly from the IE.
Since netdev maintains the list of FT over DS info structs there is not
any need for station to get callbacks when the initial action frame
is received, or not. This removes the need for the callback handler,
user data, and response timeout.
Roam times can be slightly improved by sending out the FT-over-DS
action frames to any BSS in the mobility domain immediately after
connecting. This preauthenticates IWD to each AP which means
Reassociation can happen right away when a roam is needed.
When a roam is needed station_transition_start will first try
FT-over-DS (if supported) via netdev_fast_transtion_over_ds. The
return is checked and if netdev has no cached entries FT-over-Air
will be used instead.
The beauty of FT-over-DS is that a station can send and receive
action frames to many APs to prepare for a future roam. Each
AP authenticates the station and when a roam happens the station
can immediately move to reassociation.
To handle this a queue of netdev_ft_over_ds_info structs is used
instead of a single entry. Using the new ft.c parser APIs these
info structs can be looked up when responses come in. For now
the timeouts/callbacks are kept but these will be removed as it
really does not matter if the AP sends a response (keeps station
happy until the next patch).
This is to prepare for multiple concurrent FT-over-DS action frames.
A list will be kept in netdev and for lookup reasons it needs to
parse the start of the frame to grab the aa/spa addresses. In this
call the IEs are also returned and passed to the new
ft_over_ds_parse_action_response.
For now the address checks have been moved into netdev, but this will
eventually turn into a queue lookup.
This value sets the roaming threshold on 5GHz networks. The
threshold has been separated from 2.4GHz because in many cases
5GHz can perform much better at low RSSI than 2.4GHz.
In addition the BSS ranking logic was re-worked and now 5GHz is
much more preferred, even at low RSSI. This means we need a
lower floor for RSSI before roaming, otherwise IWD would end
up roaming immediately after connecting due to low RSSI CQM
events.
This is being added as a developer method and should not be used
in production. For testing purposes though, it is quite useful as
it forces IWD to roam to a provided BSS and bypasses IWD's roaming
and ranking logic for choosing a roam candidate.
To use this a BSSID is provided as the only parameter. If this
BSS is not in IWD's current scan results -EINVAL will be returned.
If IWD knows about the BSS it will attempt to roam to it whether
that is via FT, FT-over-DS, or Reassociation. These details are
still sorted out in IWDs station_transition_start() logic.
This will enable developer features to be used. Currently the
only user of this will be StationDiagnostics.Roam() method which
should only be exposed in this mode.
Expose the state directory/storage directory path on D-Bus because it
can't be known to clients until IWD runs, and client might need to
occasionally fiddle with the network config files. While there also
expose the IWD version string, similar to how some other D-Bus services
do.
Similar to 06aa84cca set the operstate when AdHoc is started and
stopped as it is no longer always set by netdev (only for station/p2p
interface types)
Previously resp was a simple array of bytes allocated on the stack.
This was changed to a dynamically allocated array, but the sizeof(resp)
argument to ap_build_beacon_pr_head() was never changed appropriately.
Fix this by introducing a new resp_len variable that holds the number of
bytes allocated for resp. Also, move the allocation after the basic
sanity checks have been performed to avoid allocating/freeing memory
unnecessarily.
Fixes: 18a63f91fd ("ap: Write extra frame IEs from the user")
Commit 1fe5070 added a workaround for drivers which may send the
connect event prior to the connect callback/ack. This caused IWD
to fail to start eapol if reassociation was used due to
netdev_reassociate never setting netdev->connected = false.
netdev_reassociate uses the same code path as normal connections,
but when the connect callback came in connected was already set
to true which then prevents eapol from being registered. Then,
once the connect event comes in, there is no frame watch for
eapol and IWD doesn't respond to any handshake frames.
Prior to this, an error sending the FT Reassociation was treated
as fatal, which is correct for FT-over-Air but not for FT-over-DS.
If the actual l_genl_family_send call fails for FT-over-DS the
existing connection can be maintained and there is no need to
call netdev_connect_failed.
Adding a return to the tx_associate function works for both FT
types. In the FT-over-Air case this return will ultimately get
sent back up to auth_proto_rx_authenticate in which case will
call netdev_connect_failed. For FT-over-DS tx_associate is
actually called from the 'start' operation which can fail and
still maintain the existing connection.
FT-over-DS was refactored to separate the FT action frame and
reassociation. From stations standpoint IWD needs to call
netdev_fast_transition_over_ds_action prior to actually roaming.
For now these two stages are being combined and the action
roam happens immediately after the action response callback.
FT-over-DS followed the same pattern as FT-over-Air which worked,
but really limited how the protocol could be used. FT-over-DS is
unique in that we can authenticate to many APs by sending out
FT action frames and parsing the results. Once parsed IWD can
immediately Reassociate, or do so at a later time.
To take advantage of this IWD need to separate FT-over-DS into
two stages: action frame and reassociation.
The initial action frame stage is started by netdev. The target
BSS is sent an FT action frame and a new cache entry is created
in ft.c. Once the response is received the entry is updated
with all the needed data to Reassociate. To limit the record
keeping on netdev each FT-over-DS entry holds a userdata pointer
so netdev doesn't need to maintain its own list of data for
callbacks.
Once the action response is parsed netdev will call back signalling
the action frame sequence was completed (either successfully or not).
At this point the 'normal' FT procedure can start using the
FT-over-DS auth-proto.
FT-over-DS is being separated into two independent stages. The
first of which is the processing of the action frame response.
This new class will hold all the parsed information from the action
frame and allowing it to be retrieved at a later time when IWD
needs to roam.
Initial info class should be created when the action frame is
being sent out. Once a response is received it can be parsed
with ft_over_ds_parse_action_response. This verifies the frame
and updates the ft_ds_info class with the parsed data.
ft_over_ds_prepare_handshake is the final step prior to
Reassociation. This sets all the stored IEs, anonce, and KH IDs
into the handshake and derives the new PTK.
This adds the RSNE verification to ft_parse_ies which will
be common between over-Air and over-DS. The MDE check was
also factored out into its own minimal function as to
retain the spec comment but allow reuse elsewhere.
Prior to this the diagnostic interface was taken down when station
transitioned to DISCONNECTED. This worked but once station is in
a DISCONNECTING state it then calls netdev_disconnect(). Trying to
get any diagnostic data during this time may not work as its
unknown what state exactly the kernel is in. To be safe take the
interface down when station is DISCONNECTING.
The building of the FT IEs for Action/Authenticate
frames will need to be shared between ft and netdev
once FT-over-DS is refactored.
The building was refactored to work off the callers
buffer rather than internal stack buffers. An argument
'new_snonce' was included as FT-over-DS will generate
a new snonce for the initial action frame, hence the
handshakes snonce cannot be used.
Break up the rather large code block which parses out IEs,
verifies, and sets into the handshake. FT-over-DS needs these
steps broken up in order to parse the action frame response
without modifying the handshake.
Under very rare circumstances the roaming scan triggered might not be
canceled properly. This is because we issue the roam scan recursively
from within a scan callback and re-use the id of the scan for the
subsequent request. The destroy callback is invoked right after the
callback and resets the id. This leads to the scan not being canceled
properly in roam_state_clear().
src/netdev.c:netdev_mlme_notify() MLME notification Notify CQM(64)
src/station.c:station_roam_trigger_cb() 37
src/station.c:station_roam_scan() ifindex: 37
src/station.c:station_roam_trigger_cb() Using cached neighbor report for roam
...
src/scan.c:get_scan_done() get_scan_done
src/station.c:station_roam_failed() 37
src/station.c:station_roam_scan() ifindex: 37
src/scan.c:scan_request_triggered() Active scan triggered for wdev 22
^CTerminate
src/netdev.c:netdev_free() Freeing netdev wlan0[37]
src/device.c:device_free()
src/station.c:station_free()
...
Removing scan context for wdev 22
src/scan.c:scan_context_free() sc: 0x4a362a0
src/wiphy.c:wiphy_radio_work_done() Work item 14 done
==19542== Invalid write of size 4
==19542== at 0x411500: station_roam_scan_destroy (station.c:2010)
==19542== by 0x420B5B: scan_request_free (scan.c:156)
==19542== by 0x410BAC: destroy_work (wiphy.c:294)
==19542== by 0x410BAC: wiphy_radio_work_done (wiphy.c:1613)
==19542== by 0x46C66E: l_queue_clear (queue.c:107)
==19542== by 0x46C6B8: l_queue_destroy (queue.c:82)
==19542== by 0x420BAE: scan_context_free (scan.c:205)
==19542== by 0x424135: scan_wdev_remove (scan.c:2272)
==19542== by 0x408754: netdev_free (netdev.c:847)
==19542== by 0x40E18C: netdev_shutdown (netdev.c:5773)
==19542== by 0x404756: iwd_shutdown (main.c:78)
==19542== by 0x404756: iwd_shutdown (main.c:65)
==19542== by 0x470E21: handle_callback (signal.c:78)
==19542== by 0x470E21: signalfd_read_cb (signal.c:104)
==19542== by 0x47166B: io_callback (io.c:120)
==19542== Address 0x4d81f98 is 200 bytes inside a block of size 288 free'd
==19542== at 0x48399CB: free (vg_replace_malloc.c:538)
==19542== by 0x47F3E5: interface_instance_free (dbus-service.c:510)
==19542== by 0x481DEA: _dbus_object_tree_remove_interface (dbus-service.c:1694)
==19542== by 0x481F1C: _dbus_object_tree_object_destroy (dbus-service.c:795)
==19542== by 0x40894F: netdev_free (netdev.c:844)
==19542== by 0x40E18C: netdev_shutdown (netdev.c:5773)
==19542== by 0x404756: iwd_shutdown (main.c:78)
==19542== by 0x404756: iwd_shutdown (main.c:65)
==19542== by 0x470E21: handle_callback (signal.c:78)
==19542== by 0x470E21: signalfd_read_cb (signal.c:104)
==19542== by 0x47166B: io_callback (io.c:120)
==19542== by 0x47088C: l_main_iterate (main.c:478)
==19542== by 0x47095B: l_main_run (main.c:525)
==19542== by 0x47095B: l_main_run (main.c:507)
==19542== by 0x470B6B: l_main_run_with_signal (main.c:647)
==19542== Block was alloc'd at
==19542== at 0x483879F: malloc (vg_replace_malloc.c:307)
==19542== by 0x46AB2D: l_malloc (util.c:62)
==19542== by 0x416599: station_create (station.c:3448)
==19542== by 0x406D55: netdev_newlink_notify (netdev.c:5324)
==19542== by 0x46D4BC: l_hashmap_foreach (hashmap.c:612)
==19542== by 0x472F46: process_broadcast (netlink.c:158)
==19542== by 0x472F46: can_read_data (netlink.c:279)
==19542== by 0x47166B: io_callback (io.c:120)
==19542== by 0x47088C: l_main_iterate (main.c:478)
==19542== by 0x47095B: l_main_run (main.c:525)
==19542== by 0x47095B: l_main_run (main.c:507)
==19542== by 0x470B6B: l_main_run_with_signal (main.c:647)
==19542== by 0x403EDB: main (main.c:490)
==19542==
Prior to this netdev_connect_ok set setting this which really
only applies to station mode. In addition this happens for each
new station that connects to the AP. Instead set the operstate /
link mode when AP starts and stops.
Change ap_start to load all of the AP configuration from a struct
l_settings, moving the 6 or so parameters from struct ap_config members
to the l_settings groups and keys. This extends the ap profile concept
used for the DHCP settings. ap_start callers create the l_settings
object and fill the values in it or read the settings in from a file.
Since ap_setup_dhcp and ap_load_profile_and_dhcp no longer do the
settings file loading, they needed to be refactored and some issues were
fixed in their logic, e.g. l_dhcp_server_set_ip_address() was never
called when the "IP pool" was used. Also the IP pool was previously only
used if the ap->config->profile was NULL and this didn't match what the
docs said:
"If [IPv4].Address is not provided and no IP address is set on the
interface prior to calling StartProfile the IP pool will be used."
The info struct is on the stack which leads to the potential
for uninitialized data access. Zero out the info struct prior
to calling the get station callback:
==141137== Conditional jump or move depends on uninitialised value(s)
==141137== at 0x458A6F: diagnostic_info_to_dict (diagnostic.c:109)
==141137== by 0x41200B: station_get_diagnostic_cb (station.c:3620)
==141137== by 0x405BE1: netdev_get_station_cb (netdev.c:4783)
==141137== by 0x4722F9: process_unicast (genl.c:994)
==141137== by 0x4722F9: received_data (genl.c:1102)
==141137== by 0x46F28B: io_callback (io.c:120)
==141137== by 0x46E5AC: l_main_iterate (main.c:478)
==141137== by 0x46E65B: l_main_run (main.c:525)
==141137== by 0x46E65B: l_main_run (main.c:507)
==141137== by 0x46E86B: l_main_run_with_signal (main.c:647)
==141137== by 0x403EA8: main (main.c:490)
It isn't safe to return a NULL from diagnostic_akm_suite_to_security()
since the value is used directly. Also, if the AKM suite is 0, this
implies that the network is an Open network and not some unknown AKM.
==17982== Invalid read of size 1
==17982== at 0x483BC92: strlen (vg_replace_strmem.c:459)
==17982== by 0x47DE60: _dbus1_builder_append_basic (dbus-util.c:981)
==17982== by 0x41ACB2: dbus_append_dict_basic (dbus.c:197)
==17982== by 0x412050: station_get_diagnostic_cb (station.c:3614)
==17982== by 0x405B19: netdev_get_station_cb (netdev.c:4801)
==17982== by 0x47436E: process_unicast (genl.c:994)
==17982== by 0x47436E: received_data (genl.c:1102)
==17982== by 0x470FBB: io_callback (io.c:120)
==17982== by 0x4701DC: l_main_iterate (main.c:478)
==17982== by 0x4702AB: l_main_run (main.c:525)
==17982== by 0x4702AB: l_main_run (main.c:507)
==17982== by 0x4704BB: l_main_run_with_signal (main.c:647)
==17982== by 0x403EDB: main (main.c:490)
==17982== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==17982==
Aborting (signal 11) [/home/denkenz/iwd/src/iwd]
++++++++ backtrace ++++++++
0 0x488a550 in /lib64/libc.so.6
1 0x483bc92 in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so
2 0x47de61 in _dbus1_builder_append_basic() at ell/dbus-util.c:983
3 0x41acb3 in dbus_append_dict_basic() at src/dbus.c:197
4 0x412051 in station_get_diagnostic_cb() at src/station.c:3618
5 0x405b1a in netdev_get_station_cb() at src/netdev.c:4801
It is possible for the RTNL command callback to come after
netconfig_reset or netconfig_destroy has been called. Make sure that
any outstanding commands that might access the netconfig object are
canceled.
src/netconfig.c:netconfig_ipv4_dhcp_event_handler() DHCPv4 event 0
src/netconfig.c:netconfig_ifaddr_added() wlan0: ifaddr 192.168.1.55/24 broadcast 192.168.1.255
^CTerminate
src/netdev.c:netdev_free() Freeing netdev wlan0[15]
src/device.c:device_free()
src/station.c:station_free()
src/netconfig.c:netconfig_destroy()
src/netconfig.c:netconfig_reset()
src/netconfig.c:netconfig_reset_v4() 16
src/netconfig.c:netconfig_reset_v4() Stopping client
Removing scan context for wdev c
src/scan.c:scan_context_free() sc: 0x4a3cc10
==12792== Invalid read of size 8
==12792== at 0x43BF5A: netconfig_route_add_cmd_cb (netconfig.c:600)
==12792== by 0x4727FA: process_message (netlink.c:181)
==12792== by 0x4727FA: can_read_data (netlink.c:289)
==12792== by 0x470F4B: io_callback (io.c:120)
==12792== by 0x47016C: l_main_iterate (main.c:478)
==12792== by 0x47023B: l_main_run (main.c:525)
==12792== by 0x47023B: l_main_run (main.c:507)
==12792== by 0x47044B: l_main_run_with_signal (main.c:647)
==12792== by 0x403EDB: main (main.c:490)
In case the netdev is brought down while we're trying to connect, try to
detect this and fail early instead of trying to send additional
commands.
src/station.c:station_enter_state() Old State: disconnected, new state: connecting
src/station.c:station_netdev_event() Associating
src/netdev.c:netdev_mlme_notify() MLME notification Connect(46)
src/netdev.c:netdev_connect_event()
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/eapol.c:eapol_handle_ptk_1_of_4() ifindex=4
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/eapol.c:eapol_handle_ptk_3_of_4() ifindex=4
src/netdev.c:netdev_set_gtk() 4
src/station.c:station_handshake_event() Setting keys
src/netdev.c:netdev_set_tk() 4
src/netdev.c:netdev_set_rekey_offload() 4
New Key for Group Key failed for ifindex: 4:Network is down
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/station.c:station_free()
src/netdev.c:netdev_mlme_notify() MLME notification Disconnect(48)
src/netdev.c:netdev_disconnect_event()
src/wiphy.c:wiphy_reg_notify() Notification of command Reg Change(36)
src/wiphy.c:wiphy_update_reg_domain() New reg domain country code for (global) is XX
src/netdev.c:netdev_link_notify() event 16 on ifindex 4
src/wiphy.c:wiphy_reg_notify() Notification of command Reg Change(36)
src/wiphy.c:wiphy_update_reg_domain() New reg domain country code for (global) is DE
src/wiphy.c:wiphy_radio_work_done() Work item 14 done
src/station.c:station_connect_cb() 4, result: 4
Segmentation fault
A prior commit refactored the AKM selection in wiphy.c. This
ended up breaking FILS tests due to the hard coding of a
false fils_hint in wiphy_select_akm. Since our FILS tests
only advertise FILS AKMs wiphy_can_connect would return false
for these networks.
Similar to wiphy_select_akm, add a fils hint parameter to
wiphy_can_connect and pass that down directly to wiphy_select_akm.
If PreSharedKey is set, the current logic does not validate the
Passphrase beyond its existence. This can lead to strange situations
where an invalid WPA3-PSK passphrase might get used. This can of course
only happen if the user (as root) or NetworkManager-iwd-backend writes
such a file incorrectly.
Move the WSC Primary Device Type parsing from p2p.c and eap-wsc.c to a
common function in wscutil.c supporting both formats so that it can be
used in ap.c too.
Logically this frame watch belongs in station. It was kept in device.c
for the purported reason that the station object was removed with
ifdown/ifup changes and hence the frame watch might need to be removed
and re-added unnecessarily. Since the kernel does not actually allow to
unregister a frame watch (only when the netdev is removed or its iftype
changes), re-adding a frame watch might trigger a -EALREADY or similar
error.
Avoid this by registering the frame watch when a new netdev is detected
in STATION mode, or when the interface type changes to STATION.
If a netdev iftype is changed, all frame registrations are removed.
Make sure to re-register for the appropriate frame notifications in case
our iftype is switched back to 'station'. In any other iftype, no frame
watches are registered and rrm_state object is effectively dormant.
Right now, RRM is created when a new netdev is detected and its iftype
is of type station. That means that any devices that start their life
as any other iftype cannot be changed to a station and have RRM function
properly. Fix that by always creating the RRM state regardless of the
initial iftype.
In the case that a netdev is powered down, or an interface type change
occurs, the station object will be removed and any watches will be
freed.
Since rrm is created when the netdev is created and persists across
iftype and power up/down changes, it should provide a destroy callback
to station_add_state_watch so that it can be notified when the watch is
removed.
If the iftype changes, kernel silently wipes out any frame registrations
we may have registered. Right now, frame registrations are only done when
the interface is created. This can result in frame watches not being
added if the interface type is changed between station mode to ap mode
and then back to station mode, e.g.:
device wlan0 set-property Mode ap
device wlan0 set-property Mode station
Make sure to re-add frame registrations according to the mode if the
interface type is changed.
Since netdev now keeps track of iftype changes, let it call
frame_watch_wdev_remove on netdevs that it manages to clear frame
registrations that should be cleared due to an iftype change.
Note that P2P_DEVICE wdevs are not managed by any netdev object, but
since their iftype cannot be changed, they should not be affected
by this change.
And set the interface type based on the event rather than the command
callback. This allows us to track interface type changes even if they
come from outside iwd (which shouldn't happen.)
The prepare_ft patch was an intermediate to a full patch
set and was not fully tested stand alone. Its placement
actually broke FT due to handshake->aa getting overwritten
prior to netdev->prev_bssid being copied out. This caused
FT to fail with "transport endpoint not connected (-107)"
- Make sure to print the cookie information
- Don't print messages for frames we're not interested in. This is
particularly helpful when running auto-tests since frame acks from
hostapd pollute the iwd log.
Fix a regression where connection to an open network results in an
NotSupported error being returned.
Fixes: d79e883e93 ("netdev: Introduce connection types")
This makes conversions simpler. Also fixes a bug where P2P devices were
printed with an incorrect Mode value since dbus_iftype_to_string was
assuming that an iftype as defined in nl80211.h was being passed in,
while netdev was returning an enum value defined in netdev.h.
