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mirror of https://git.kernel.org/pub/scm/network/wireless/iwd.git synced 2024-11-25 09:39:25 +01:00
Commit Graph

3934 Commits

Author SHA1 Message Date
Denis Kenzior
d1acc80331 netdev: Support more IGTK cipher suites 2022-10-24 11:05:24 -05:00
Denis Kenzior
17131c860a ie: Support more group management cipher suites 2022-10-24 11:05:24 -05:00
Denis Kenzior
ecadc72bcd wiphy: Support GCMP|CCMP-256 cipher suites 2022-10-24 11:05:24 -05:00
Denis Kenzior
fb9bcdadec station: Use IE_CIPHER_IS_GCMP_CCMP 2022-10-24 11:05:24 -05:00
Denis Kenzior
e61cada28f ie: Add IE_CIPHER_IS_GCMP_CCMP inline
Similar to IE_AKM_IS_* functions
2022-10-24 11:05:24 -05:00
Denis Kenzior
b3c3b08785 netdev: Add support for CCMP|GCMP-256
These are similar to CCMP/GCMP, just a different key size which is
already taken care of by calling crypto_cipher_key_len
2022-10-24 11:05:24 -05:00
Denis Kenzior
5998043bd2 ie: Add support for GCMP|CCMP-256 2022-10-24 11:05:24 -05:00
Denis Kenzior
8799d5a393 station: diagnostic: implement PairwiseCipher 2022-10-24 11:05:24 -05:00
Denis Kenzior
81b9eb515e wiphy: Support GCMP cipher suite 2022-10-24 11:05:24 -05:00
Denis Kenzior
4c30bd68ea wiphy: Generalize supported cipher dumper
To make it easier to support additional ciphers in the future.
2022-10-24 11:05:24 -05:00
Denis Kenzior
8040826079 ie: add ie_rsn_cipher_suite_to_string 2022-10-24 11:05:24 -05:00
Denis Kenzior
150856c315 ie: Add support for GCMP cipher suite 2022-10-24 11:05:24 -05:00
Denis Kenzior
d643964fed netdev: Add support for setting GCMP keys 2022-10-24 11:05:24 -05:00
Denis Kenzior
7ab97db9a9 netdev: Build RSN attributes in a common function
Both CMD_ASSOCIATE and CMD_CONNECT paths were using very similar code to
build RSN specific attributes.  Use a common function to build these
attributes to cut down on duplicated code.

While here, also start using ie_rsn_cipher_suite_to_cipher instead of
assuming that the pairwise / group ciphers can only be CCMP or TKIP.
2022-10-24 11:05:24 -05:00
Denis Kenzior
59ace1b691 ie: Skip unknown pairwise ciphers 2022-10-24 11:05:24 -05:00
Denis Kenzior
ec3085e932 crypto: Add new cipher definitions 2022-10-24 11:05:24 -05:00
Denis Kenzior
f1a713a0fa ie: Simplify implementation
Instead of copy-pasting the same basic operation (memcpy & assignment),
use a goto and a common path instead.  This should also make it easier
for the compiler to optimize this function.
2022-10-24 11:05:24 -05:00
Denis Kenzior
94ecdc799a ie: Rename _BIP to _BIP_CMAC 2022-10-24 11:05:24 -05:00
Denis Kenzior
201b85e8da crypto: Rename BIP to BIP_CMAC
To match the spec more closely.  Several additional BIP algorithms are
being introduced, including BIP_GMAC_128|256 and BIP_CMAC_256.
2022-10-24 11:05:24 -05:00
Denis Kenzior
b85b92b3ee eapol: More strictly validate key_descriptor_version 2022-10-24 11:05:24 -05:00
Denis Kenzior
7f2aa40bba ap: Fix spurious warning message
The warning message would be printed even if no setting was present

Fixes: ac976c6f71 ("ap: Remove support for deprecated APRanges setting")
2022-10-24 11:05:24 -05:00
James Prestwood
ba6a48018c station: constrain known frequencies before roam scan
The known frequency list may include frequencies that once were
allowed but are now disabled due to regulatory restrictions. Don't
include these frequencies in the roam scan.
2022-10-11 14:31:20 -05:00
James Prestwood
887073b5d9 station: skip disabled frequencies in neighbor report
Use the disabled frequency list to check if the neighbor report is
including a frequency which IWD cannot use.
2022-10-11 14:30:43 -05:00
Peter Shkenev
6b81b6e46a station: remove excess if clause
No functional changes are intended.
2022-10-10 13:41:29 -05:00
James Prestwood
3bc5728815 station: add two debug events for FT
These events are sent if IWD fails to authentiate
(ft-over-air-roam-failed) or if it falls back to over air after
failing to use FT-over-DS (try-ft-over-air)
2022-10-06 09:00:53 -05:00
Andrew Zaborowski
72e7d3ceb8 station: Handle NETCONFIG_EVENT_FAILED
If IPv4 setup fails and the netconfig logic gives up, continue as if the
connection had failed at earlier stages so that autoconnect can try the
next available network.
2022-10-03 10:29:54 -05:00
Denis Kenzior
ac976c6f71 ap: Remove support for deprecated APRanges setting
In preparation for 2.0 release, remove settings that were marked
deprecated during 1.x cycle.
2022-09-29 12:59:16 -05:00
James Prestwood
bead4745ac ap: include PROBE_RESP attribute if required by driver
Certain drivers support/require probe response offloading which
IWD did not check for or properly handle. If probe response
offloading is required the probe response frame watch will not
be added and instead the ATTR_PROBE_RESP will be included with
START_AP.

The head/tail builders were reused but slightly modified to check
if the probe request frame is NULL, since it will be for use with
START_AP.
2022-09-28 16:23:12 -05:00
James Prestwood
06ec89d6b8 wiphy: add wiphy_supports_probe_resp_offload
Parse the AP probe response offload attribute during the dump. If
set this indicates the driver expects the probe response attribute
to be included with START_AP.
2022-09-28 16:23:00 -05:00
James Prestwood
59d36cf24f ft: optimize clearing authentications
Clearing all authentications during ft_authenticate was a very large
hammer and may remove cached authentications that could be used if
the current auth attempt fails.

For example the best BSS may have a problem and fail to authenticate
early with FT-over-DS, then fail with FT-over-Air. But another BSS
may have succeeded early with FT-over-DS. If ft_authenticate clears
all ft_infos that successful authentication will be lost.
2022-09-28 16:20:16 -05:00
James Prestwood
edf556cc7b station: add two new roaming states (FT/FW)
This adds two new station states to differentiate between
reassociation (ROAMING), Fast transition (FT_ROAMING) or a firmare
based roam (FW_ROAMING).
2022-09-28 16:19:24 -05:00
James Prestwood
9efcea3604 station: check disassociation bits for AP roaming
AP roaming was structured such that any AP roam request would
force IWD to roam (assuming BSS's were found in scan results).
This isn't always the best behavior since IWD may be connected
to the best BSS in range.

Only force a roam if the AP includes one of the 3 disassociation/
termination bits. Otherwise attempt to roam but don't set the
ap_directed_roaming flag which will allows IWD to stay with the
current BSS if no better candidates are found.
2022-09-28 12:35:45 -05:00
James Prestwood
f3b31e48e0 station: reorder AP roam logic
There are a few checks that can be done prior to parsing the
request, in addition the explicit check for preparing_roam was
removed since this is taken care of by station_cannot_roam().
2022-09-28 12:35:06 -05:00
James Prestwood
8d224624fc ft: fix ft_associate to verify if authentication succeeded
ft_associate was only checking the presence of the info structure,
not if it actually succeeded to authenticate.
2022-09-28 12:34:08 -05:00
James Prestwood
ae0fa6207e ft: clear ft_info inside offchannel destroy
Once offchannel completes we can check if the info structure was
parsed, indicating authentication succeeded. If not there is no
reason to keep it around since IWD will either try another BSS or
fail.
2022-09-28 12:32:49 -05:00
James Prestwood
8758cc8948 station: handle ROAMING state in disconnect event
This both adds proper handling to the new roaming logic and fixes
a potential bug with firmware roams.

The new way roaming works doesn't use a connect callback. This
means that any disconnect event or call to netdev_connect_failed
will result in the event handler being called, where before the
connect callback would. This means we need to handle the ROAMING
state in the station disconnect event so IWD properly disassociates
and station goes out of ROAMING.

With firmware roams netdev gets an event which transitions station
into ROAMING. Then netdev issues GET_SCAN. During this time a
disconnect event could come in which would end up in
station_disconnect_event since there is no connect callback. This
needs to be handled the same and let IWD transition out of the
ROAMING state.
2022-09-28 12:24:03 -05:00
James Prestwood
5181d20986 ft: remove auth-proto/ft_sm
This is no longer used.
2022-09-27 17:28:37 -05:00
James Prestwood
5e731527e5 netdev: remove FT auth proto
This removes the FT auth-proto from netdev and all associated helpers
and APIs.
2022-09-27 17:28:17 -05:00
James Prestwood
ad59fb6249 netdev: ft: complete FT refactor
This finalizes the refactor by moving all the handshake prep
into FT itself (most was already in there). The netdev-specific
flags and state were added into netdev_ft_tx_associate which
now avoids any need for a netdev API related to FT.

The NETDEV_EVENT_FT_ROAMED event is now emitted once FT completes
(netdev_connect_ok). This did require moving the 'in_ft' flag
setting until after the keys are set into the kernel otherwise
netdev_connect_ok has no context as to if this was FT or some
other connection attempt.

In addition the prev_snonce was removed from netdev. Restoring
the snonce has no value once association begins. If association
fails it will result in a disconnect regardless which requires
a new snonce to be generated
2022-09-27 17:18:38 -05:00
James Prestwood
0e6aaea2a9 station: try multiple roam candidates
This converts station to using ft_action/ft_authenticate and
ft_associate and dropping the use of the netdev-only/auth-proto
logic.

Doing this allows for more flexibility if FT fails by letting
IWD try another roam candidate instead of disconnecting.
2022-09-27 17:02:31 -05:00
James Prestwood
ceebf0dc53 station: handle NETDEV_EVENT_FT_ROAMED 2022-09-27 17:01:48 -05:00
James Prestwood
07a9fc6c09 ft: update action response parsing to include header
Now the full action frame including the header is provided to ft
which breaks the existing parser since it assumes the buffer starts
at the body of the message.
2022-09-27 16:51:07 -05:00
James Prestwood
8833a7377e netdev: hook in RX for FT-Action/Authentication/Association
This forwards Action, Authentication and Association frames to
ft.c via their new hooks in netdev.

Note that this will break FT-over-Air temporarily since the
auth-proto still is in use.
2022-09-27 16:48:15 -05:00
James Prestwood
e12f198255 station: create list of roam candidates
The current behavior is to only find the best roam candidate, which
generally is fine. But if for whatever reason IWD fails to roam it
would be nice having a few backup BSS's rather than having to
re-scan, or worse disassociate and reconnect entirely.

This patch doesn't change the roam behavior, just prepares for
using a roam candidate list. One difference though is any roam
candidates are added to station->bss_list, rather than just the
best BSS. This shouldn't effect any external behavior.

The candidate list is built based on scan_bss rank. First we establish
a base rank, the rank of the current BSS (or zero if AP roaming). Any
BSS in the results with a higher rank, excluding the current BSS, will
be added to the sorted station->roam_bss_list (as a new 'roam_bss'
entry) as well as stations overall BSS list. If the resulting list is
empty there were no better BSS's, otherwise station can now try to roam
starting with the best candidate (head of the roam list).
2022-09-27 16:42:29 -05:00
James Prestwood
391607de93 ft: implement offchannel authentication
A new API was added, ft_authenticate, which will send an
authentication frame offchannel via CMD_FRAME. This bypasses
the kernel's authentication state allowing multiple auth
attempts to take place without disconnecting.
2022-09-27 16:38:29 -05:00
James Prestwood
dfdc9fdb3b netdev: add FT TX frame hook
A netdev hook for FT to send out frames. This will be used both for
FT-over-DS action frames and FT-over-Air authentication.
2022-09-27 16:38:05 -05:00
James Prestwood
cd3f82ce8c ft: netdev: prep for FT isolation into ft.c
Currently netdev handles caching FT auth information and uses FT
parsers/auth-proto to manage the protocol. This sets up to remove
this state machine from netdev and isolate it into ft.c.

This does not break the existing auth-proto (hence the slight
modifications, which will be removed soon).

Eventually the auth-proto will be removed from FT entirely, replaced
just by an FT state machine, similar to how EAPoL works (netdev hooks
to TX/RX frames).
2022-09-27 16:36:19 -05:00
Denis Kenzior
4c6cc29f4a station: Match on BSSID and SSID when roaming 2022-09-27 11:47:47 -05:00
Denis Kenzior
803e2d6dd2 station: Match on BSSID and SSID on Roamed event
Since APs might operate multiple SSIDs on the same BSSID, it is not
enough to match on the BSSID only.
2022-09-27 10:59:11 -05:00
Denis Kenzior
fd035cba9a station: Lookup preauth target on the network
There may be situations (due to Multi-BSS operation) where an AP might
be advertising multiple SSIDs on the same BSSID.  It is thus more
correct to lookup the preauthentication target on the network object
instead of the station bss_list.  It used to be that the network list of
bsses was not updated when roam scan was performed.  Hence the lookup
was always performed on the station bss_list.  But this is no longer the
case, so it is safer to lookup on the network object directly on the
network.
2022-09-27 10:37:53 -05:00
James Prestwood
a484b928ac netdev: differentiate connect/auth timeouts
The warnings in the authenticate and connect events were identical
so it could be difficult knowing which print it was if IWD is not
in debug mode (to see more context). The prints were changed to
indicate which event it was and for the connect event the reason
attribute is also parsed.

Note the resp_ies_len is also initialized to zero now. After making
the changes gcc was throwing a warning.
2022-09-26 22:14:13 -05:00
James Prestwood
4d062c73ea sae: add IWD_SAE_DEBUG for more SAE debug messages
SAE will now check for IWD_SAE_DEBUG and enable more debug logging
using the new macro, sae_debug.
2022-09-26 14:13:30 -05:00
James Prestwood
81ee935a48 offchannel: add priority to start call
This will let the caller specify their own priority.
2022-09-21 21:17:04 -05:00
James Prestwood
7d97869c1f wiphy: add new work priority for FT
FT is special in that it really should not be interrupted. Since
FRAME/OFFCHANNEL have the highest priority we run the risk of
DPP or some other offchannel operation interfering with FT.
2022-09-21 21:16:51 -05:00
James Prestwood
3d8865f2c0 nl80211util: include frame type with build_cmd_frame
The CMD_FRAME builder assumed action frames but can just as easily
be used with any frame type.
2022-09-21 21:16:07 -05:00
James Prestwood
abcacce4be netdev: add NETDEV_EVENT_FT_ROAMED
FT is now driven (mostly) by station which removes the connect
callback. Instead once FT is completed, keys set, etc. netdev
will send an event to notify station.
2022-09-21 21:16:01 -05:00
Andrew Zaborowski
a2f805a3ae netconfig: Update l_netconfig API calls
Since l_netconfig's DHCPv6 client instance no longer sets parameters on
the l_icmp6_client instance, call l_icmp6_client_set_nodelay() and
l_icmp6_client_set_debug() directly.  Also enable optimistic DAD to
speed up IPv6 setup if available.
2022-09-20 10:06:31 -05:00
Andrew Zaborowski
c084dcf6b8 netconfig: Drop D-Bus path from debug message
l_dbus_message_get_path(reply) is normally NULL in this callback so
don't bother printing it.
2022-09-20 10:06:24 -05:00
James Prestwood
bced9dcf4b frame-xchg: create global group enum
Only P2P utilizes groups for now but to avoid conflicts in group
numbers for other modules create a global list which can be added
to as needed.
2022-09-16 11:04:31 -05:00
James Prestwood
7f81ab9bbb station: don't set OCVC for FT AKMs
Using OCV in FT is now disabled, so if the AKM is FT don't set the
capability or AP's may reject FT attempts.
2022-09-16 11:02:17 -05:00
James Prestwood
0b6eb251d5 frame-xchg: add type to frame_xchg_prefix
All uses of frame-xchg were for action frames, and the frame type
was hard coded. Soon other frame types will be needed so the type
must now be specified in the frame_xchg_prefix structure.
2022-09-16 11:02:07 -05:00
James Prestwood
af9111355c mpdu: fix timestamp size in mpdu frames
Beacons, probe responses and timing advertisements were only using
1 byte for the timestamps which should be 8 bytes.
2022-09-15 16:15:35 -05:00
James Prestwood
945fbd5b91 station: scan before a forced roam
This will make the debug API more robust as well as fix issues
certain drivers have when trying to roam. Some of these drivers
may flush scan results after CMD_CONNECT which results in -ENOENT
when trying to roam with CMD_AUTHENTICATE unless you rescan
explicitly.

Now this will be taken care of automatically and station will first
scan for the BSS (or full scan if not already in results) and
attempt to roam once the BSS is seen in a fresh scan.

The logic to replace the old BSS object was factored out into its
own function to be shared by the non-debug roam scan. It was also
simplified to just update the network since this will remove the
old BSS if it exists.
2022-09-14 13:18:22 -05:00
Andrew Zaborowski
4cf655936e netconfig: Skip update if resolver data unchanged 2022-09-13 08:59:39 -05:00
Andrew Zaborowski
a4c0515e0f netconfig: Add NetworkConfigurationAgent DBus API
Add a second netconfig-commit backend which, if enabled, doesn't
directly send any of the network configuration to the kernel or system
files but delegates the operation to an interested client's D-Bus
method as described in doc/agent-api.txt.  This backend is switched to
when a client registers a netconfig agent object and is swiched away
from when the client disconnects or unregisters the agent.  Only one
netconfig agent can be registered any given time.
2022-09-13 08:57:55 -05:00
Andrew Zaborowski
11bae53408 netconfig: Re-add FILS handling
Load the settings from FILS IE data into our l_netconfig instance when
appropriate.
2022-09-13 08:56:50 -05:00
Andrew Zaborowski
fbdd4471a1 netconfig: Handle l_netconfig events
Add netconfig_event_handler() that responds to events emitted by
the l_netconfig object by calling netconfig_commit, tracking whether
we're connected for either address family and emitting
NETCONFIG_EVENT_CONNECTED or NETCONFIG_EVENT_FAILED as necessary.

NETCONFIG_EVENT_FAILED is a new event as until now failures would cause
the netconfig state machine to stop but no event emitted so that
station.c could take action.  As before, these events are only
emitted based on the IPv4 configuration state, not IPv6.
2022-09-13 08:55:31 -05:00
Andrew Zaborowski
b79c7d49cd netconfig: Add netconfig-commit API
Add netconfig-commit.c whose main method, netconfig_commit actually sets
the configuration obtained by l_netconfig to the system netdev,
specifically it sets local addresses on the interface, adds routes to the
routing table, sets DNS related data and may add entries to the neighbor
cache.  netconfig-commit.c uses a backend-ops type structure to allow
for switching backends.  In this commit there's only a default backend
that uses l_netconfig_rtnl_apply() and a struct resolve object to write
the configuration.

netconfig_gateway_to_arp is moved from netconfig.c to netconfig-commit.c
(and renamed.)  The struct netconfig definition is moved to netconfig.h
so that both files can access the settings stored in the struct.
2022-09-13 08:51:29 -05:00
Andrew Zaborowski
a8b1139dcb netconfig: Store pointer to netdev instead of ifindex
To avoid repeated lookups by ifindex, replace the ifindex member in
struct netconfig with a struct netdev pointer.  A struct netconfig
always lives shorter than the struct netdev.
2022-09-13 08:51:13 -05:00
Andrew Zaborowski
98ba09562e netconfig: Clean up netconfig_get_static{4,6}_address
* make the error handling simpler,
 * make error messages more consistent,
 * validate address families,
 * for IPv4 skip l_rtnl_address_set_noprefixroute()
   as l_netconfig will do this internally as needed.
 * for IPv6 set the default prefix length to 64 as that's going to be
   used for the local prefix route's prefix length and is a more
   practical value.
2022-09-13 08:47:14 -05:00
Andrew Zaborowski
b0b1a46779 netconfig: Keep configuration directly in struct l_netconfig
Drop all the struct netconfig members where we were keeping the parsed
netconfig settings and add a struct l_netconfig object.  In
netconfig_load_settings load all of the settings once parsed directly
into the l_netconfig object.  Only preserve the mdns configuration and
save some boolean values needed to properly handle static configuration
and FILS.  Update functions to use the new set of struct netconfig
members.

These booleans mirroring the l_netconfig state could be replaced by
adding l_netconfig getters for settings which currently only have
setters.
2022-09-13 08:46:05 -05:00
Andrew Zaborowski
ce36d2fb15 netconfig: Drop dhcp, dhcp6 and acd client instances
In anticipation of switching to use the l_netconfig API, which
internally handles DHCPv4, DHCPv6, ACD, etc., drop pointers to
instances of l_dhcp_client, l_dhcp6_client and l_acd from struct
netconfig.  Also drop all code used for handling events from these
APIs, including code to commit the received configurations to the
system.  Committing the final settings to the system netdevs is going to
be handled by a new set of utilities in a new file.
2022-09-13 08:45:43 -05:00
James Prestwood
f079444c6c manager: add support for [General].Country
This lets the user set a country as the global regulatory
domain if the kernel/driver isn't doing it on its own.
2022-09-09 09:13:00 -05:00
James Prestwood
c5874c9ab0 doc: document [General].Country main.conf option
This lets the user set a country code explicitly.
2022-09-09 09:12:56 -05:00
James Prestwood
15c7379b4d rrm: constrain scan frequency before scanning
The RRM module was blindly scanning using the requested
frequency which may or may not be possible given the hardware.
Instead check that the frequency will work and if not reject
the request.

This was reported by a user seeing the RRM scan fail which was
due to the AP requesting a scan on 5GHz when the adapter was
2.4GHz only.
2022-09-09 09:11:17 -05:00
James Prestwood
483d4f2e61 netdev: remove 'req' from netdev_mac_change_failed
The request object was never being used
2022-09-07 15:45:59 -05:00
James Prestwood
45f95ecf35 netdev: allow powered address change
Support for MAC address changes while powered was recently added to
mac80211. This avoids the need to power down the device which both
saves time as well as preserves any allowed frequencies which may
have been disabled if the device powered down.

The code path for changing the address was reused but now just the
'up' callback will be provided directly to l_rtnl_set_mac. Since
there aren't multiple stages of callbacks the rtnl_data structure
isn't strictly needed, but the code looks cleaner and more
consistent between the powered/non-powered code paths.

The comment/debug error print was also updated to be more general
between the two MAC change code paths.
2022-09-07 15:45:03 -05:00
Denis Kenzior
e8d2d80266 netconfig: Fix documentation of MulticastDNS setting
Documentation for MulticastDNS setting suggests it should be part of the
main iwd configuration file.  See man iwd.config.  However, in reality
the setting was being pulled from the network provisioning file instead.
The latter actually makes more sense since systemd-resolved has its own
set of global defaults.  Fix the documentation to reflect the actual
implementation.
2022-08-24 11:09:45 -05:00
Denis Kenzior
f56d01d25e netdev: constify struct scan_bss use
netdev does not keep any pointers to struct scan_bss arguments that are
passed in.  Make this explicitly clear by modifying the API definitions
and mark these as const.
2022-08-23 11:24:04 -05:00
James Prestwood
77c366ba2e netdev: handle packet loss notification
This attribute was already handled and simply printed. Now a
netdev event will be sent to notify any listeners.
2022-08-16 15:29:52 -05:00
James Prestwood
103eeb2cc6 station: react to (new) netdev packet loss event
This adds a new netdev event for packet loss notifications from
the kernel. Depending on the scenario a station may see packet
loss events without any other indications like low RSSI. In these
cases IWD should still roam since there is no data flowing.
2022-08-16 15:29:28 -05:00
James Prestwood
8091d5a53d station: add debug method GetNetworks
This gets all networks but includes individual entries for each
BSS.
2022-08-11 15:46:50 -05:00
James Prestwood
99a71ee819 station: check for matching SSID in Roam()
This is a debug method, but still should verify the SSID in the
target matches the current BSS.
2022-08-11 09:10:47 -05:00
James Prestwood
143b346a4b network: make network const in network_bss_list_get_entries
No reason for this to not be const.
2022-08-11 09:10:40 -05:00
James Prestwood
5374e44354 station: re-try OWE if buggy AP is detected
Some APs use an older hostapd OWE implementation which incorrectly
derives the PTK. To work around this group 19 should be used for
these APs. If there is a failure (reason=2) and the AKM is OWE
set force default group into network and retry. If this has been
done already the behavior is no different and the BSS will be
blacklisted.
2022-08-08 13:37:23 -05:00
James Prestwood
7e99f1343c network: add setter/getter/flag for forcing default OWE group
If a OWE network is buggy and requires the default group this info
needs to be stored in network in order for it to set this into the
handshake on future connect attempts.
2022-08-08 13:37:17 -05:00
James Prestwood
b094f734e4 owe: allow OWE to force group 19
Similarly with SAE, some AP's either don't do group negotiations
right, or specifically with OWE, incorrectly derive the PTK unless
group 19 is used.
2022-08-08 13:37:08 -05:00
James Prestwood
38ed5e5039 handshake: add force_default_owe_group flag
Indicates the OWE SM should only use the default group
2022-08-08 13:37:05 -05:00
James Prestwood
d6b3d6d730 scan: watch for regdom updates to enable 6GHz
This functionality works around the kernel's behavior of allowing
6GHz only after a regulatory domain update. If the regdom updates
scan.c needs to be aware in order to split up periodic scans, or
insert 6GHz frequencies into an ongoing periodic scan. Doing this
allows any 6GHz BSS's to show up in the scan results rather than
needing to issue an entirely new scan to see these BSS's.
2022-08-05 13:38:26 -05:00
James Prestwood
69339c7a97 util: guard against NULL 'freqs' in scan_freq_set_free
Since this can be used with the _auto_ macro it must be able to handle
a NULL input for error paths.
2022-08-05 12:26:54 -05:00
James Prestwood
91df2ee364 scan: split full scans by band to enable 6GHz
The kernel's regulatory domain updates after some number of beacons
are processed. This triggers a regulatory domain update (and wiphy
dump) but only after a scan request. This means a full scan started
prior to the regdom being set will not include any 6Ghz BSS's even
if the regdom was unlocked during the scan.

This can be worked around by splitting up a large scan request into
multiple requests allowing one of the first commands to trigger a
regdom update. Once the regdom updates (and wiphy dumps) we are
hopefully still scanning and could append an additional request to
scan 6GHz.
2022-08-05 12:02:19 -05:00
James Prestwood
0bc44a038b util: add scan_freq_set_clone
This creates a new scan_freq_set from an input set which only contains
frequencies from bands included in the mask.
2022-08-05 11:49:18 -05:00
Denis Kenzior
8c01edf74b scan: Don't crash on external scans
In the case of an external scan, we won't have a scan_request object,
sr.  Make sure to not crash in this case.

Also, since scan_request can no longer carry the frequency set in all
cases, add a new member to scan_results in order to do so.

Fixes: 27d8cf4ccc ("scan: track scanned frequencies for entire request")
2022-08-05 11:17:56 -05:00
Denis Kenzior
3d691038bc station: Fix memory leak
Make sure that the known frequency set is always cleaned up on error.

Fixes: bb604b92f1 ("station: fallback to periodic scan if regdom unset")
2022-08-05 11:17:41 -05:00
Denis Kenzior
82f873a025 util: Allow scan_freq_set to be autodestructed 2022-08-05 09:27:59 -05:00
James Prestwood
bb604b92f1 station: fallback to periodic scan if regdom unset
The kernel handles setting the regulatory domain by receiving beacons
which set the country IE. Presumably since most regulatory domains
disallow 6GHz the default (world) domain also disables it. This means
until the country is set, 6GHz is disabled.

This poses a problem for IWD's quick scanning since it only scans a few
frequencies and this likely isn't enough beacons for the firmware to
update the country, leaving 6Ghz inaccessable to the user without manual
intervention (e.g. iw scan passive, or periodic scans by IWD).

To try and work around this limitation the quick scan logic has been
updated to check if a 6GHz AP has been connected to before and if that
frequency is disabled (but supported). If this is the case IWD will opt
for a full passive scan rather than scanning a limited set of
frequencies.
2022-08-04 14:16:51 -05:00
James Prestwood
911572f09a wiphy: don't re-dump wiphy if the regdom didn't change
For whatever reason the kernel will send regdom updates even if
the regdom didn't change. This ends up causing wiphy to dump
which isn't needed since there should be no changes in disabled
frequencies.

Now the previous country is checked against the new one, and if
they match the wiphy is not dumped again.
2022-08-04 14:03:28 -05:00
James Prestwood
1709148484 wiphy: add wiphy_regdom_is_updating
This allows a module to check the current status of the regdom
in case it misses the wiphy event (e.g. registers after the
STARTED event).
2022-08-04 14:03:15 -05:00
James Prestwood
83a5f6edd1 wiphy: dump wiphy's on regulatory domain change
A change in regulatory domain can result in frequencies being
enabled or disabled depending on the domain. This effects the
frequencies stored in wiphy which other modules depend on
such as scanning, offchannel work etc.

When the regulatory domain changes re-dump the wiphy in order
to update any frequency restrictions.
2022-08-04 14:02:39 -05:00
James Prestwood
dfcba7c83c wiphy: track GET_REG ID
Keep track of the GET_REG call so it can be canceled if the wiphy
goes down.
2022-08-04 14:02:25 -05:00
James Prestwood
544aafb675 wiphy: add wiphy_country_is_unknown
A helper to check whether the country code corresponds to a
real country, or some special code indicating the country isn't
yet set. For now, the special codes are OO (world roaming) and
XX (unknown entity).
2022-08-04 11:48:08 -05:00
James Prestwood
aa0d8f1283 wiphy: add two regulatory domain state events
Events to indicate when a regulatory domain wiphy dump has
started and ended. This is important because certain actions
such as scanning need to be delayed until the dump has finished.
2022-08-04 10:30:46 -05:00
James Prestwood
9b628dd02d wiphy: use nl80211_parse_supported_frequencies
Removes the parser in wiphy and uses the helper instead
2022-08-04 10:25:58 -05:00
James Prestwood
471d34704f wiphy: track self-managed flag
Check if the SELF_MANAGED_REG flag is set and set into wiphy.
2022-08-04 10:25:52 -05:00
James Prestwood
907a2fd7b9 nl80211util: add nl80211_parse_supported_frequencies
A helper function to parse supported and disabled frequencies.
2022-08-04 10:25:45 -05:00
James Prestwood
27d8cf4ccc scan: track scanned frequencies for entire request
The NEW_SCAN_RESULTS handling was written to only parse the frequency
list if there were no additional scan commands to send. This results in
the scan callback containing frequencies of only the last CMD_TRIGGER.

Until now this worked fine because a) the queue is only used for hidden
networks and b) frequencies were never defined by any callers scanning
for hidden networks (e.g. dbus/periodic scans).

Soon the scan command queue will be used to break up scan requests
meaning only the last scan request frequencies would be used in the
callback, breaking the logic in station.

Now the NEW_SCAN_RESULTS case will parse the frequencies for each scan
command rather than only the last.
2022-08-04 10:21:31 -05:00
James Prestwood
f555e5dda2 wiphy: fix runtime error from bit shift
The compiler treated the '1' as an int type which was not big enough
to hold a bit shift of 31:

runtime error: left shift of 1 by 31 places cannot be represented in
		type 'int'

Instead of doing the iftype check manually, refactor
wiphy_get_supported_iftypes by adding a subroutine which just parses
out iftypes from a mask into a char** list. This removes the need to
case each iftype into a string.
2022-08-04 10:20:59 -05:00
Alexander Kobel
cfd2fe7d33 manager: Fix typo 2022-08-04 09:15:50 -05:00
Michael Johnson
6b87d3e7e2 netdev: Add logging for CQM messages
Add extra logging around CQM events to help track wifi status. This is
useful for headless systems that can only be accessed over the network
and so information in the logs is invaluable for debugging outages.

Prior to this change, the only log for CQM messages is saying one was
received. This adds details to what attributes were set and the
associated data with them.

The signal strength log format was chosen to roughly match
wpa_supplicant's which looks like this:

CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-60 noise=-96 txrate=6000
2022-08-02 11:11:18 -05:00
Michael Johnson
f4c3278a7b station: Log scan results during a roam
Provides useful information on why a roam might have failed, such as
failing to find the BSS or the BSS being ranked lower, and why that
might be.

The output format is the same as station_add_seen_bss for consistency.
2022-08-01 10:17:23 -05:00
James Prestwood
d9a16fee56 nl80211util: add nested attribute support
Adds support for nested attributes in nl80211_parse_attrs
2022-07-26 15:31:37 -05:00
James Prestwood
f2961cd63a wiphy: constrain scan set by disabled frequencies
With the addition of disabled_freqs, wiphy_constrain_freq_set needs
to also remove any frequencies which are disabled.
2022-07-26 15:31:31 -05:00
James Prestwood
98620ecd11 wiphy: add disabled_freqs list
If a frequency is disabled IWD should keep track and disallow any
operations on that channel such as scanning. A new list has been added
which contains only disabled frequencies.
2022-07-26 15:31:08 -05:00
James Prestwood
081b0af2d6 util: add scan_freq_set_subtract
Removes any frequencies from one set that are found in the other.
2022-07-26 13:13:11 -05:00
James Prestwood
3f1d72e545 util: make scan_freq_set_get_bands const 2022-07-26 13:13:04 -05:00
James Prestwood
b52ed27b72 scan: make scan_freq_set const in scan_passive
The scan_passive API wasn't using a const struct scan_freq_set as it
should be since it's not modifying the contents. Changing this to
const did require some additional changes like making the scan_parameters
'freqs' member const as well.

After changing scan_parameters, p2p needed updating since it was using
scan_parameters.freqs directly. This was changed to using a separate
scan_freq_set pointer, then setting to scan_parameters.freqs when needed.
2022-07-26 13:12:38 -05:00
James Prestwood
1efbe1637f manager: unregister nl80211 config watch
For consistency unregister the config watch when manager exits
2022-07-26 13:11:22 -05:00
James Prestwood
4e55447a60 wiphy: use HE element for data rate estimation
If an HE element is found, prefer using this for the rate estimation
since it will likely yield the fastest rate.
2022-07-20 17:19:25 -05:00
James Prestwood
43db085ef1 band: add band_estimate_he_rx_rate
Similar to the HT/VHT APIs, this estimates the data rate based on the
HE Capabilities element, in addition to our own capabilities. The
logic is much the same as HT/VHT. The major difference being that HE
uses several MCS tables depending on the channel width. Each width
MCS set is checked (if supported) and the highest estimated rate out
of all the MCS sets is used.
2022-07-20 17:19:07 -05:00
James Prestwood
53988a7285 ie: add validation for HE Capabilities element
This makes sure the width set bits are sane, and validates the length
depending on which MCS sets are enabled.
2022-07-20 17:18:35 -05:00
James Prestwood
a3521ff172 wiphy: fix strange compiler bug with gcc 11.2
There appears to be a compiler bug with gcc 11.2 which thinks the vht_mcs_set
is a zero length array, and the memset of size 8 is out of bounds. This is only
seen once an element is added to 'struct band'.

In file included from /usr/include/string.h:519,
                 from src/wiphy.c:34:
In function ‘memset’,
    inlined from ‘band_new_from_message’ at src/wiphy.c:1300:2,
    inlined from ‘parse_supported_bands’ at src/wiphy.c:1423:11,
    inlined from ‘wiphy_parse_attributes’ at src/wiphy.c:1596:5,
    inlined from ‘wiphy_update_from_genl’ at src/wiphy.c:1773:2:
/usr/include/bits/string_fortified.h:59:10: error: ‘__builtin_memset’ offset [0, 7] is out of the bounds [0, 0] [-Werror=array-bounds]
   59 |   return __builtin___memset_chk (__dest, __ch, __len,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   60 |                                  __glibc_objsize0 (__dest));
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~
2022-07-19 17:45:19 -05:00
James Prestwood
6c6bfb3d16 scan: increase max data rate, now for HE
This increases the maximum data rate which now is possible with HE.
A few comments were also updated, one to include 6G when adjusting
the rank for >4000mhz, and the other fixing a typo.
2022-07-19 16:25:42 -05:00
James Prestwood
a7ed0e6ba5 band: add find_best_mcs_nss
This is a general way of finding the best MCS/NSS values which will work
for HT, VHT, and HE by passing in the max MCS values for each value which
the MCS map could contain (0, 1, or 2).
2022-07-19 15:51:17 -05:00
James Prestwood
9baaaebd38 wiphy: parse HE capabilities from band info
The HE capabilities information is contained in
NL80211_BAND_ATTR_IFTYPE_DATA where each entry is a set of attributes
which define the rules for one or more interface types. This patch
specifically parses the HE PHY and HE MCS data which will be used for
data rate estimation.

Since the set of info is per-iftype(s) the data is stored in a queue
where each entry contains the PHY/MCS info, and a uint32 bit mask where
each bit index signifies an interface type.
2022-07-19 15:47:35 -05:00
James Prestwood
3d48d147ca wiphy: make MCS info print more generic
With the addition of HE, the print function for MCS sets needs to change
slightly. The maps themselves are the same format, but the values indicate
different MCS ranges. Now the three MCS max values are passed in.
2022-07-19 15:46:49 -05:00
James Prestwood
bdcbccbb9f wiphy: use a 16 bit tag for extended IEs
If an extended IE is needed a uint8_t tag would overflow.
2022-07-19 15:46:44 -05:00
James Prestwood
d46fac6e93 wiphy: set band->freq when parsing band info
This sets the band into the 'band' structure in order to support
HE data rates.
2022-07-19 15:46:10 -05:00
James Prestwood
fce1449a87 band: add he_capabilities queue
This queue will hold iftype(s) specific data for HE capabilities. Since
the capabilities may differ per-iftype the data is stored as such. Iftypes
may share a configuration so the band_he_capabilities structure has a
mask for each iftype using that configuration.
2022-07-19 15:45:58 -05:00
James Prestwood
62bdd1bea5 band: add band_freq
HE has different rules depending on the frequency, so the band
structure also needs to track the frequency for any rate information
to have context.
2022-07-19 15:45:47 -05:00
James Prestwood
d8fe443363 ie: add IE's from 802.11ax amendment 2022-07-19 15:45:28 -05:00
James Prestwood
e089ab2de2 scan: add colocated scan flag 2022-07-19 15:45:18 -05:00
Denis Kenzior
b84b71042b iwd: Add missing module dependencies
Certain module dependencies were missing, which could cause a crash on
exit under (very unlikely) circumstances.

  #0  l_queue_peek_head (queue=<optimized out>) at ../iwd-1.28/ell/queue.c:241
  #1  0x0000aaaab752f2a0 in wiphy_radio_work_done (wiphy=0xaaaac3a129a0, id=6)
      at ../iwd-1.28/src/wiphy.c:2013
  #2  0x0000aaaab7523f50 in netdev_connect_free (netdev=netdev@entry=0xaaaac3a13db0)
      at ../iwd-1.28/src/netdev.c:765
  #3  0x0000aaaab7526208 in netdev_free (data=0xaaaac3a13db0) at ../iwd-1.28/src/netdev.c:909
  #4  0x0000aaaab75a3924 in l_queue_clear (queue=queue@entry=0xaaaac3a0c800,
      destroy=destroy@entry=0xaaaab7526190 <netdev_free>) at ../iwd-1.28/ell/queue.c:107
  #5  0x0000aaaab75a3974 in l_queue_destroy (queue=0xaaaac3a0c800,
      destroy=destroy@entry=0xaaaab7526190 <netdev_free>) at ../iwd-1.28/ell/queue.c:82
  #6  0x0000aaaab7522050 in netdev_exit () at ../iwd-1.28/src/netdev.c:6653
  #7  0x0000aaaab7579bb0 in iwd_modules_exit () at ../iwd-1.28/src/module.c:181

In this particular case, wiphy module was de-initialized prior to the
netdev module:

Jul 14 18:14:39 localhost iwd[2867]: ../iwd-1.28/src/wiphy.c:wiphy_free() Freeing wiphy phy0[0]
Jul 14 18:14:39 localhost iwd[2867]: ../iwd-1.28/src/netdev.c:netdev_free() Freeing netdev wlan0[45]
2022-07-18 10:58:06 -05:00
James Prestwood
80f9374440 ap: remove diagnostic interface when netdev goes down
This fixes a crash associated with toggling the iftype to AP mode
then calling GetDiagnostics. The diagnostic interface is never
cleaned up when netdev goes down so DBus calls can still be made
which ends up crashing since the AP interface objects are no longer
valid.

Running the following iwctl commands in a script (once or twice)
triggers this crash reliably:

iwctl device wlp2s0 set-property Mode ap
iwctl device wlp2s0 set-property Mode station
iwctl device wlp2s0 set-property Mode ap
iwctl ap wlp2s0 start myssid secret123
iwctl ap wlp2s0 show

++++++++ backtrace ++++++++
0  0x7f8f1a8fe320 in /lib64/libc.so.6
1  0x451f35 in ap_dbus_get_diagnostics() at src/ap.c:4043
2  0x4cdf5a in _dbus_object_tree_dispatch() at ell/dbus-service.c:1815
3  0x4bffc7 in message_read_handler() at ell/dbus.c:285
4  0x4b5d7b in io_callback() at ell/io.c:120
5  0x4b489b in l_main_iterate() at ell/main.c:476
6  0x4b49a6 in l_main_run() at ell/main.c:519
7  0x4b4cd9 in l_main_run_with_signal() at ell/main.c:645
8  0x404f5b in main() at src/main.c:600
9  0x7f8f1a8e8b75 in /lib64/libc.so.6
+++++++++++++++++++++++++++
2022-07-01 11:58:06 -05:00
Jesse Lentz
125c9b195c dpp: Add Started, Role, and URI properties to API
Add three new properties to the DeviceProvisioning API: Started, Role,
and URI.
2022-06-27 11:07:13 -05:00
James Prestwood
7fad6590bd eapol: allow 'secure' to be set on rekeys
About a month ago hostapd was changed to set the secure bit on
eapol frames during rekeys (bc36991791). The spec is ambiguous
about this and has conflicting info depending on the sections you
read (12.7.2 vs 12.7.6). According to the hostapd commit log TGme
is trying to clarify this and wants to set secure=1 in the case
of rekeys. Because of this, IWD is completely broken with rekeys
since its disallows secure=1 on PTK 1/4 and 2/4.

Now, a bool is passed to the verify functions which signifies if
the PTK has been negotiated already. If secure differs from this
the key frame is not verified.
2022-06-24 18:11:56 -05:00
James Prestwood
a276243e9a storage: warn user on badly named provisioning file
The man pages (iwd.network) have a section about how to name provisioning
files containing non-alphanumeric characters but not everyone reads the
entire man page.

Warning them that the provisioning file was not read and pointing to
'man iwd.network' should lead someone in the right direction.
2022-06-24 10:40:11 -05:00
Denis Kenzior
16739cb4e6 eap: Fix EAP-Success handling
EAP-Success might come in with an identifier that is incremented by 1
from the last Response packet.  Since identifier field is a byte, the
value might overflow (from 255 -> 0.)  This overflow isn't handled
properly resulting in EAP-Success/Failure packets with a 0 identifier
due to overflow being erroneously ignored.  Fix that.
2022-06-23 16:20:28 -05:00
Andrew Zaborowski
032a3d1473 station: Move netconfig_reset() to common path
To avoid repetition, call netconfig_reset in
station_reset_connection_state.
2022-06-17 14:09:55 -05:00
Andrew Zaborowski
e88a0757ab storage: Log a message on network file parse errors
Most users of storage_network_open don't log errors when the function
returns a NULL and fall back to defaults (empty l_settings).
storage_network_open() itself only logs errors if the flie is encrypted.
Now also log an error when l_settings_load_from_file() fails to help track
down potential syntax errors.
2022-06-17 14:09:38 -05:00
Andrew Zaborowski
ba1253df3b netconfig: Fix address format validation
Drop the wrong negation in the error check.  Check that there are no extra
characters after prefix length suffix.  Reset errno 0 before the strtoul
call, as recommended by the manpage.
2022-06-17 14:04:07 -05:00
James Prestwood
f2fe9206c6 p2p: fix warning for uninitialized variable (clang)
This is actually a false positive only because
p2p_device_validate_conn_wfd bails out if the IE is NULL which
avoids using wfd_data_length. But its subtle and without inspecting
the code it does seem like the length could be used uninitialized.

src/p2p.c:940:7: error: variable 'wfd_data_len' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized]
                if (dev->conn_own_wfd)
                    ^~~~~~~~~~~~~~~~~
src/p2p.c:946:8: note: uninitialized use occurs here
                                                        wfd_data_len))
                                                        ^~~~~~~~~~~~
src/p2p.c:940:3: note: remove the 'if' if its condition is always true
                if (dev->conn_own_wfd)
                ^~~~~~~~~~~~~~~~~~~~~~
src/p2p.c:906:23: note: initialize the variable 'wfd_data_len' to silence this warning
                ssize_t wfd_data_len;
                                    ^
                                     = 0
2022-06-10 14:44:18 -05:00
James Prestwood
8a8c2fbe38 storage: remove unused variables
The auto macros apparently made it difficult for gcc to
detect, but clang was able to find them.
2022-06-10 14:44:10 -05:00
James Prestwood
39b36f8e21 fils: pragma false positive for uninitialized variable
On musl-gcc the compiler is giving a warning for igtk_key_index
and gtk_key_index being used uninitialized. This isn't possible
since they are only used if gtk/igtk are non-NULL so pragma to
ignore the warning.

src/fils.c: In function 'fils_rx_associate':
src/fils.c:580:17: error: 'igtk_key_index' may be used uninitialized
	in this function [-Werror=maybe-uninitialized]
  580 |                 handshake_state_install_igtk(fils->hs,
					igtk_key_index,igtk + 6,
					igtk_len - 6, igtk);

(same error for gtk_key_index)
2022-06-10 13:59:01 -05:00
James Prestwood
2ad5e48314 network: fix handling of AlwaysRandomizeAddress/AddressOverride
For network configuration files the man pages (iwd.network) state
that [General].{AlwaysRandomizeAddress,AddressOverride} are only
used if main.conf has [General].AddressRandomization=network.

This actually was not being enforced and both iwd.network settings
were still taken into account regardless of what AddressRandomization
was set to (even disabled).

The handshake setup code now checks the AddressRandomization value
and if anything other than 'network' skips the randomization.
2022-06-03 15:52:06 -05:00
James Prestwood
19693f587f dpp,dpp-util: cast size_t for constant arguments to va_arg
There were a few places in dpp/dpp-util which passed a single byte but
was being read in with va_arg(va, size_t). On some architectures this was
causing failures presumably from the compiler using an integer type
smaller than size_t. As we do elsewhere, cast to size_t to force the
compiler to pass a properly sized iteger to va_arg.
2022-06-03 11:54:58 -05:00
Andrew Zaborowski
eb8362bf76 eap-tls: Keep l_tls instance for reauthentication
After one of the eap-tls-common-based methods succeeds keep the TLS
tunnel instance until the method is freed, rather than free it the
moment the method succeeds.  This fixes repeated method runs where until
now each next run would attempt to create a new TLS tunnel instance
but would have no authentication data (CA certificate, client
certificate, private key and private key passphrase) since those are
were by the old l_tls object from the moment of the l_tls_set_auth_data()
call.

Use l_tls_reset() to reset the TLS state after method success, followed
by a new l_tls_start() when the reauthentication starts.
2022-05-26 11:23:46 -05:00
James Prestwood
7104e12667 ft: remove frame type check in FT
A user reported that IWD was failing to FT in some cases and this was
due to the AP setting the Retry bit in the frame type. This was
unexpected by IWD since it directly checks the frame type against
0x00b0 which does not account for any B8-B15 bits being set.

IWD doesn't need to verify the frame type field for a few reasons:
First mpdu_validate checks the management frame type, Second the kernel
checks prior to forwarding the event. Because of this the check was
removed completely.

Reported-By: Michael Johnson <mjohnson459@gmail.com>
2022-05-23 13:01:10 -05:00
Jesse Lentz
ce227e7b94 station: Provide SignalLevelAgent update while connecting
When a station enters the "connecting" state, if a SignalLevelAgent is
registered, provide an initial signal level via a "Changed" method call.
2022-05-23 12:56:55 -05:00
Jesse Lentz
38e2d4383a station: Simplify usage of station_signal_agent_notify()
station_signal_agent_notify() has been refactored so that its usage is
simpler. station_rssi_level_changed() has been replaced by an inlined
call to station_signal_agent_notify().
2022-05-23 12:38:41 -05:00
Jesse Lentz
6cea51b79f netdev: Initialize signal level during connection attempt
The call to netdev_rssi_level_init() in netdev_connect_common() is
currently a no-op, because netdev->connected has not yet been set at
this stage of the connection attempt. Because netdev_rssi_level_init()
is only used twice, it's been replaced by two inlined calls to
netdev_set_rssi_level_idx().
2022-05-23 12:36:00 -05:00