Commit graph

5297 commits

Author SHA1 Message Date
Veerendranath Jakkam
2033e318e6 DSCP: Parsing and processing of DSCP Policy Request frames
Add support to parse received DSCP Policy Request frames and send the
request details as control interface events.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
2021-09-29 00:20:42 +03:00
Veerendranath Jakkam
fe2a44485e DSCP: DSCP policy capability configuration
The DSCP policy capability is disabled by default. The user frameworks
which have support for handling DSCP policy request messages need to
enable this capability explicitly to allow wpa_supplicant to advertise
the capability to the AP and allow the related frames to be processed.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
2021-09-28 11:07:21 +03:00
Jouni Malinen
8471d940e3 Move pmf_in_use() into a more generic file
This function is not specific to GAS, so make it available throughout
wpa_supplicant without requiring CONFIG_GAS.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-09-28 11:07:21 +03:00
Hu Wang
ce267f4da9 P2P: DFS offload for the autonomous GO
Enhance the P2P_GROUP_ADD command to support DFS channel with 80 and 160
MHz bandwidth to be used for autonomous GO when using offloaded DFS.

For example, 'P2P_GROUP_ADD freq=5500 max_oper_chwidth=80 ht40 vht'

- Previous behavior: AP fallback to channel 100 using 20 MHz with
  "No VHT higher bandwidth support for the selected channel 100"
- Enhanced behavior: AP starts on channel 100 using 80 MHz with
  "VHT center channel 106 for 80 or 80+80 MHz bandwidth"

This functionality is on top of the driver's capability to offload DFS,
which is advertized through WPA_DRIVER_FLAGS_DFS_OFFLOAD.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-09-07 17:40:25 +03:00
Sreeramya Soratkal
e5173e8b12 P2P: Enable multiple channel widths for P2P in 6 GHz band
Enable support for P2P connection in 6 GHz with the channel width of 40
MHz, 80 MHz, and 160 MHz. The flag max_oper_chwidth is used to configure
the maximum channel width for P2P connection in 6 GHz with the commands
P2P_CONNECT, P2P_INVITE, and P2P_GROUP_ADD.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-09-02 18:41:12 +03:00
Sreeramya Soratkal
f725254cc1 P2P: Enhance determination of secondary offset to support 6 GHz channels
Current definition of wpas_p2p_get_ht40_mode() determines secondary
offset in the 5 GHz band. Enhance the functionality of this function to
determine offset to support 6 GHz channels also.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-09-02 18:19:33 +03:00
Sreeramya Soratkal
575a8e6ca3 P2P: Clone 6 GHz related parameters to new group interface config
Clone pmf and p2p_6ghz_disable configuration values when creating a new
P2P group interface. PMF is required in 6 GHz band operation.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-09-02 18:07:58 +03:00
Sreeramya Soratkal
9f2217c513 P2P: Consider p2p_no_go_freq for GO preferred frequency
Currently while selecting a preferred frequency when no preference is
known, p2p_no_go_freq is not considered for 5 GHz and 60 GHz channels.
This results in starting GO on the channels that are configured not to
allow the local device as GO.

Use wpas_p2p_supported_freq_go api to check if the p2p_no_go_freq
configuration before selecting the preferred frequency for GO.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-08-26 15:46:58 +03:00
Sreeramya Soratkal
882c53be50 P2P: Avoid integer overflow in channel
For some 6 GHz operating class like 134, there is a possibility where
the ch variable used for channel iterator overflows when it is
incremented. Fix this by updating the datatype of ch variable to
avoid integer overflow while incrementing.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-08-26 15:32:56 +03:00
Mathew Hodson
be81bbdc3b doc: Fix grammar in wpa_supplicant overview
Signed-off-by: Mathew Hodson <mathew.hodson@gmail.com>
2021-08-25 16:20:17 +03:00
Andrew Beltrano
0030590fb3 Generate an event when a network is added or removed
Generate an event on the control socket interface when a network is
added or removed. The event name CTRL-EVENT-NETWORK-<ADDED|REMOVED>
is followed by the network entry identifier. The event matches the
corresponding Network<Added|Removed> signal on the d-bus interface.

Signed-off-by: Andrew Beltrano <anbeltra@microsoft.com>
2021-08-19 17:21:06 +03:00
Nick Porter
f238610616 Add a --conf option to eapol_test.py
The --conf option specifies a file containing a list of options
to configure the network used for running the test which will be
used in place of the defaults built into the script.

Signed-off-by: Nick Porter <nick@portercomputing.co.uk>
2021-08-19 16:58:45 +03:00
Arowa Suliman
46b60299a4 wpa_supplicant: src: Replace Sane with Valid.
Replace the word Sane with Valid which is inclusive.

Signed-off-by: Arowa Suliman <arowa@chromium.org>
2021-08-19 11:34:45 +03:00
Vinita S. Maloo
e433d06dd5 Allow MSCS support to be disabled for testing purposes
"SET disable_mscs_support 1" can be used to disable indication of MSCS
support in the Extended Capabilities element for testing purposes. This
is also disabling addition of the MSCS element even if valid
configuration parameters had been configured.

Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
2021-08-12 18:28:07 +03:00
Vinita S. Maloo
025f8ab52e SCS: Processing of SCS Response frames
Add support to receive and process SCS Response frames from the AP and
indicate the status to upper layers.

Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
2021-08-12 18:28:07 +03:00
Vinita S. Maloo
b4e01ae929 Allow SCS supported to be disabled for testing purposes
"SET disable_scs_support 1" can be used to disable indication of SCS
support in the Extended Capabilities element for testing purposes.

Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
2021-08-12 18:28:07 +03:00
Vinita S. Maloo
c005283c48 SCS: Sending of SCS Request frames
Add support to parse SCS control interface command and form the SCS
Request frame to be sent to SCS enabled AP.

Signed-off-by: Vinita S. Maloo <vmaloo@codeaurora.org>
2021-08-12 18:28:07 +03:00
Sreeramya Soratkal
24774dcc2e P2P: Require PMF for P2P GO in the 6 GHz band
Enable (and require) the management frame protection for the P2P GO if
it is started on a 6 GHz channel.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-08-05 19:14:52 +03:00
Sreeramya Soratkal
49442194c4 SAE: Derive H2E PT while reconnecting to same SSID also
P2P connections in the 6 GHz band use SAE authentication algorithm after
getting credentials with WPS connection. During WPS connection as it
doesn't use SAE, SAE PT is not derived. After getting SAE credentials,
the STA connects to the same SSID using SAE auth algorithm. Earlier, SAE
H2E PT was not derived while connecting to the same SSID to which the
STA is connected last time. Due to this, the P2P group formation fails
for 6 GHz channels when H2E is enabled as the PT will not be setup by
the P2P client before proceeding to the SAE authentication. Same could
happen with infrastructure WPS when wps_cred_add_sae=1 is used.

Set up the SAE H2E PT while connecting to the same SSID again also to
make sure that the H2E PT is set up in the STA to derive the PWE for
successful SAE authentication. The PT derivation will be skipped in
wpa_s_setup_sae_pt() if PT is already available for that SSID.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-08-04 00:20:09 +03:00
Sreeramya Soratkal
ac79ed4998 HE: Obtain correct AP mode capabilities for hw_mode with 6 GHz support
Though both 5 GHz channels and 6 GHz channels report the mode as
HOSTAPD_MODE_IEEE80211A, there is a possibility of different HT/VHT/HE
capabilities being available between these bands. Use get_mode() to
obtain correct capabilities to cover cases where the driver reports
different capability values for the 5 GHz and 6 GHz channels.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-08-03 19:48:12 +03:00
Utkarsh Bhatnagar
84b3de8095 TDLS: Support TDLS operations in HE mode for 6 GHz
Determine if the TDLS peer supports TDLS in 6 GHz band based on the HE 6
GHz Band Capabilities element received in the TDLS Setup Response frame.
Indicate the peer's HE 6 GHz capabilities to the driver through
sta_add().

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-07-29 20:07:25 +03:00
Veerendranath Jakkam
b4f7506ff0 FILS: Flush external-PMKSA when connection fails without ERP keys
External applications can store PMKSA entries persistently and
reconfigure them to wpa_supplicant after restart. This can result in
wpa_supplicant having a PMKSA for FILS authentication without having
matching ERP keys for it which would prevent the previously added
mechanism for dropping FILS PMKSA entries to recover from rejected
association attempts.

Fix this by clearing PMKSA entries configured by external applications
upon FILS connection failure even when ERP keys are not available.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
2021-07-14 21:35:24 +03:00
Veerendranath Jakkam
80bcd7ecd1 FILS: Flush PMKSA entries on FILS connection failure
wpa_supplicant generates both a PMKSA cache entry and ERP keys upon
successful FILS connection and uses FILS authentication algorithm for
subsequent connections when either ERP keys or a PMKSA cache entry is
available.

In some cases, like AP/RADIUS server restart, both ERP keys and PMKSA
becomes invalid. But currently when an AP rejects an association,
wpa_supplicant marks only ERP keys as failed but not clearing PMKSA.

Since PMKSA is not cleared, consecutive connection attempts are still
happening with FILS authentication algorithm and connection attempts are
failing with the same association rejection again instead of trying to
recover from the state mismatch by deriving a new ERP key hierarchy.

Clear PMKSA entries as well on association rejection from an AP to allow
the following connection attempt to go with open authentication to
re-establish a valid ERP key hierarchy. Also, since clearing PMKSA
entries on unprotected (Re)Association Response frames could allow DoS
attack (reduce usability of PMKSA caching), clear PMKSA entries only
when ERP keys exists.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
2021-07-14 21:20:17 +03:00
Jouni Malinen
914a2f518f SAE: Report authentication rejection over control interface
CTRL-EVENT-AUTH-REJECT reporting was previously skipped when going
through SAE-specific Authentication frame handling. Add this event here
as well to be more consistent with control interface events.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-07-14 18:18:47 +03:00
Sreeramya Soratkal
311091eb43 P2P: Use SAE+PMF for P2P connection in 6 GHz
Use WPA3-Personal (SAE+PMF) for P2P connections in the 6 GHz band to
enable the Wi-Fi Display use case on the 6 GHz band without having to
use WPA2-Personal (PSK) on that new band.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-06-14 20:24:37 +03:00
Sreeramya Soratkal
f0cdacacb3 P2P: Allow connection on 6 GHz channels if requested
Previously, 6 GHz channels were disabled for P2P operations. Use the new
allow_6ghz parameter with P2P_CONNECT, P2P_GROUP_ADD, and P2P_INVITE
commands for P2P connection on the 6 GHz channels when Wi-Fi Display is
enabled on both the devices.

However, the p2p_6ghz_disable parameter in the configuration takes a
higher precedence.

Indicate P2P 6 GHz band capable information in Device Capability Bitmap
of P2P Capability attribute to indicate the P2P Device is capable of P2P
operation in the 6 GHz band.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-06-14 20:24:37 +03:00
Sreeramya Soratkal
b36142a740 P2P: Add allow_6ghz parameter to control interface
Introduce a new allow_6ghz parameter with P2P_CONNECT, P2P_GROUP_ADD,
and P2P_INVITE commands for P2P connection on the 6 GHz channels when
Wi-Fi Display is enabled on both the devices. This commit is only adding
the interface change without changing any actual P2P functionality.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-06-14 20:24:37 +03:00
Sreeramya Soratkal
6423c23e3d P2P: Allow 6 GHz channels to be included in the P2P_FIND operation
Previously, the 6 GHz channels were disabled for P2P operations.
Introduce a new include_6ghz parameter for the P2P_FIND command to
configure P2P discovery on the 6 GHz channels.

However, the p2p_6ghz_disable parameter in the configuration takes a
higher priority. If the p2p_6ghz_disable parameter is not set in the
configuration, include_6ghz parameter can be used to enable or disable
the discovery operation in the 6 GHz channels for the P2P_FIND command.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-06-14 20:24:37 +03:00
Sreeramya Soratkal
eaf850867b P2P: Extend channel determination/validation to 6 GHz channels
Extend the previously 5 GHz specific 80 and 160 MHz channels helper
functions to support 6 GHz channels.

Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
2021-06-10 23:43:03 +03:00
Gurumoorthi Gnanasambandhan
9f901e65b4 WNM: Ignore SSID check for hidden SSID in transition candidates
Do not skip scan results with zero length SSID (i.e., a hidden SSID)
when searching for potential BSS transition candidates since such
entries might be for the same ESS (i.e., for the current SSID). Use only
the BSSID check for such cases.

Signed-off-by: Gurumoorthi Gnanasambandhan <gguru@codeaurora.org>
2021-06-09 20:55:39 +03:00
Jouni Malinen
525ec045f3 P2P: Use correct return type for has_channel()
This helper function returns enum chan_allowed values, so use it as the
return type instead of unnecessarily generic int.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-06-08 12:46:45 +03:00
Jouni Malinen
e8662e9d44 Use a helper function to remove struct wpa_bss_tmp_disallowed entries
It is safer to remove and free these entries with a shared helper
function to avoid issues with potentially forgetting to unregister or
free something if this structure is extended in the future.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-06-03 00:11:18 +03:00
Hu Wang
ecaacb47b7 OCE: Remove AP from driver disallow list with sufficient AP RSSI
When a STA makes an association request that is rejected by an OCE AP
due to the RSSI being insufficient, the AP is added to the driver
disallow list by wpa_set_driver_tmp_disallow_list().

Once the AP increases TX power which makes the AP RSSI higher than
Association Rejection RSSI threshold, the AP is supposed to be removed
from the driver disallow list but that was not the case.

wpa_is_bss_tmp_disallowed() is called in the scan result handler, so it
is the best place to put the logic of removing the AP from the driver
disallow list with sufficient AP RSSI.

This is needed with drivers that use the temporarily disallowed BSS list
(which is currently supported only with a QCA vendor command). The
wpa_supplicant internal functionality was already taking care of this
with the wpa_is_bss_tmp_disallowed() return value even for cases where
the entry remaining in the list.

Signed-off-by: Hu Wang <huw@codeaurora.org>
2021-06-03 00:06:00 +03:00
Vamsi Krishna
6abfb1418c Use estimated throughputs irrespective of RSSI delta for 6 GHz APs
APs in 6 GHz operating with LPI/VLP rules will have significantly lower
SNR values compared to 2.4/5 GHz band APs. Earlier, the estimated
throughputs were used for comparison only when the delta of SNRs between
both the APs was not greater than 7 and as a result for comparing 6 GHz
APs with 2.4/5 GHz APs, estimated throughputs were not getting used.

The estimated throughput calculations takes SNR value also into
consideration, hence remove RSSI delta check if any of the APs are from
the 6 GHz band. This change is limited to the 6 GHz band only in order
to avoid possible regressions with 2.4/5 GHz APs.

Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>
2021-05-21 18:41:59 +03:00
Jouni Malinen
1c5aa2579d Add EAPOL_TX command to extend ext_eapol_frame_io possibilities
This makes it convenient for an external test script to use
ext_eapol_frame_io=1 to delay and/or modify transmission of EAPOL-Key
msg 1/4 without having to use separate frame injection mechanisms.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-11 21:13:56 +03:00
Jouni Malinen
7f0a2e4225 Report EAPOL-RX events for testing purposes
This makes it more convenient to track EAPOL frame reception from an
external test script.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-11 21:13:56 +03:00
Vamsi Krishna
46f8976196 Prefer 6 GHz APs for connection in BSS selection
Prefer 6 GHz APs when estimated throughputs are equal with APs from the
2.4/5 GHz bands while selecting APs for connection. Also add a 6 GHz
specific noise floor default value for the 6 GHz band (with the same
value as was used for 5 GHz previously) to make this step clearer.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-07 13:05:58 +03:00
Vamsi Krishna
84008457ed Add support to calculate estimated throughputs for HE rates
Add support to consider HE rates while estimating throughputs for the
scan results from HE enabled APs. HE 0.8 usec GI rates are used in all
tables. The minimum SNR values for HE rates (1024-QAM) are derived by
adding the existing minimum SNR values of 256-QAM rates from VHT tables
and the difference between the values of minimum sensitivity levels of
256-QAM rates and 1024-QAM rates defined in Table 27-51 (Receiver
minimum input level sensitivity) in IEEE P802.11ax/D8.0.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-07 13:05:58 +03:00
Vamsi Krishna
658b6a0b08 Add support to estimate throughput for VHT 160/80+80 MHz supporting APs
Add support to calculate estimated throughputs for APs which support the
160 MHz (including 80+80 MHz) mode in VHT. The minimum SNR values for
VHT 160 MHz mode are derived from minimum SNR values used for VHT 80 MHz
mode + 3 dBm. The min-SNR values are derived relatively based on the
information that the minimum sensitivity levels defined in Table 21-25
(Receiver minimum input level sensitivity) in IEEE Std 802.11-2020 for
the 160 MHz mode are higher by 3 dBm compared to the values of the 80
MHz mode for each rate.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-07 12:28:46 +03:00
Vamsi Krishna
1d2118b509 Check local supported features for estimating BSS throughputs accurately
Add checks for features supported by the specific hardware mode of the
local device that has the channel for which the throughput is being
estimated instead of assuming the local device supports all optional
features. This is more accurate for cases where the local capabilities
might differ based on the band. In addition, this is in preparation for
extending rate estimates to cover optional VHT and HE features.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-05-07 12:27:21 +03:00
Kani M
b8d337c632 DPP2: Fix channel 6 inclusion for chirping with non-2 GHz interfaces
When the driver provides a list of supported modes, chan6 ended getting
added even if the 2.4 GHz mode was not included. This resulted in
incorrect behavior of trying to transmit on a not supported channel in
case of 5 GHz only radios.

Fix this by adding the channel 6 by default only if the driver does not
provide a list of supported modes. Whenever the supported modes are
available, only add this channel if it is explicitly listed as an
enabled channel.

Fixes: 8e5739c3ac ("DPP2: Check channel 6 validity before adding it to chirp channel list")
Signed-off-by: Kani M <kanisumi@codeaurora.org>
2021-04-21 23:14:04 +03:00
Jouni Malinen
d675d3b15b Add helper functions for parsing RSNXE capabilities
Simplify the implementation by using shared functions for parsing the
capabilities instead of using various similar but not exactly identical
checks throughout the implementation.

Signed-off-by: Jouni Malinen <j@w1.fi>
2021-04-10 12:43:38 +03:00
Jouni Malinen
663e190b72 SAE: Remove now unused password identifier argument from non-H2E case
IEEE Std 802.11-2020 mandates H2E to be used whenever an SAE password
identifier is used. While this was already covered in the
implementation, the sae_prepare_commit() function still included an
argument for specifying the password identifier since that was used in
an old test vector. Now that that test vector has been updated, there is
no more need for this argument anymore. Simplify the older non-H2E case
to not pass through a pointer to the (not really used) password
identifier.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-04-10 12:12:54 +03:00
Ilan Peer
79f87f4734 PASN: Change PASN flows to use SAE H2E only
Do so for both wpa_supplicant and hostapd. While this was not explicitly
required in IEEE P802.11az/D3.0, likely direction for the draft is to
start requiring use of H2E for all cases where SAE is used with PASN.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2021-04-10 12:12:22 +03:00
Ilan Peer
8c786e0687 PASN: Derive KDK only when required
When a PTK derivation is done as part of PASN authentication flow, a KDK
derivation should be done if and only if the higher layer protocol is
supported by both parties.

Fix the code accordingly, so KDK would be derived if and only if both
sides support Secure LTF.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
2021-04-10 11:55:55 +03:00
Sunil Dutt
0bae161229 Set last_eapol_matches_bssid=1 on a roam+auth indication from driver
Commit 3ab35a6603 ("Extend EAPOL frames processing workaround for
roaming cases") added a work around to address the issue of EAPOL frame
reception after reassociation replied to with an incorrect destination
address (the BSSID of the old AP). This is due to association events and
EAPOL RX events being reordered for the roaming cases with drivers that
perform BSS selection internally.

This mechanism relies on the fact that the driver always forwards the
EAPOL handshake to wpa_supplicant after the roaming (sets
last_eapol_matches_bssid during the EAPOL processing and resets on the
assoc/reassoc indication).

The above approach does not address the case where the driver does the
EAPOL handshake on the roam, indicating the authorized status to
wpa_supplicant but also forwards the EAPOL handshake to wpa_supplicant
for few other roam attempts. This is because the flag
last_eapol_matches_bssid is not set with the roam+authorized event from
the driver. Thus, the next reorder of roam and EAPOL RX events would
miss this workaround.

Address this by setting last_eapol_matches_bssid=1 on a roam+authorized
event from the driver.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-04-09 21:51:46 +03:00
Jouni Malinen
2445e18b6f tests: assoc+auth driver event
Signed-off-by: Jouni Malinen <j@w1.fi>
2021-03-28 13:33:40 +03:00
Jouni Malinen
00bec7b5be tests: IEEE 802.1X and FORCE_UNAUTH state
Signed-off-by: Jouni Malinen <j@w1.fi>
2021-03-28 12:36:18 +03:00
Jouni Malinen
8ca330bd70 Flush pending control interface message for an interface to be removed
wpa_supplicant_ctrl_iface_deinit() was executed only if the
per-interface control interface initialization had been completed. This
is not the case if driver initialization fails and that could result in
leaving behind references to the freed wpa_s instance in a corner case
where control interface messages ended up getting queued.

Fix this by calling wpa_supplicant_ctrl_iface_deinit() in all cases to
cancel the potential eloop timeout for wpas_ctrl_msg_queue_timeout with
the reference to the wpa_s pointer. In addition, flush any pending
message from the global queue for this interface since such a message
cannot be of use after this and there is no need to leave them in the
queue until the global control interface gets deinitialized.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
2021-03-26 00:21:18 +02:00
Jouni Malinen
354f87e2e3 MSCS: Fix MSCS Response frame Status field parsing
This is a 2 octet field, so need to use WPA_GET_LE16() here instead of
using only the first octet of the value.

Fixes: bbd3178af4 ("MSCS: Add support to process MSCS Response frames")
Signed-off-by: Jouni Malinen <j@w1.fi>
2021-03-23 00:42:06 +02:00