Use a local variable and check the record payload length validity before
writing it into record->payload_length in hopes of getting rid of a
bogus static analyzer warning. The negative return value was sufficient
to avoid record->payload_length being used, but that seems to be too
complex for some analyzers. (CID 122668)
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Typecasting &mgmt->u.action.u.fst_action to a struct pointer for various
FST Action frame payloads seemed to be triggering static analyzer
warnings about bounds checking since sizeof(mgmt->u.action.u.fst_action)
== 1 even though that is really a variable length structure. Try to
avoid this by calculating the pointer for the beginning of the frame
instead of variable length struct. (CID 125642)
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible for the previously set SSID to remain in place between
test cases (e.g., in sequence "p2ps_connect_adv_go_persistent
p2p_set_ssid_postfix") and the P2P SSID postfix not getting used
properly. Make this less likely to occur by clearing the old SSID in
p2p_flush().
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
These are confusing when the style used with the couple of FST IE checks
differs from the rest of hostapd/wpa_supplicant implementation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need for this function to be an inline function in a header
file since it is used only within fst_group.c.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 717333f4e4 ('FST: Add the Fast
Session Transfer (FST) module') performed incorrect frame length
validation for Setup Request (did not remove 24+1 header from
consideration) and did not include payload validation for other FST
Action frames. Fix these by explicitly verifying that the payload of
these frames is sufficiently long before reading the values from there.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need to waste resources for this packet socket if FT-over-DS
is disabled or when operating P2P GO or AP mode in wpa_supplicant.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This patch implements global to local control interface redirection in
the same way as it's done for wpa_supplicant. Any global control
interface command beginning with "IFNAME=..." will be routed to the
corresponding local control interface handler.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The newly introduced function will be used in followup commits to handle
requests redirected from the global control interface.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This command allows network variables to be copied from one network to
another when the networks belong to different radios. This is similar to
the per-interface DUP_NETWORK command. On the global control interface,
the command syntax is as follows:
DUP_NETWORK <src ifname> <dst ifname> <src network id> <dst network id> <variable name>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 53606b105c ('tests: Wait for scan
to complete on all interfaces in reset()') added option of passing
ifname to get_driver_status(). This could result in FAIL-NO-IFNAME-MATCH
returns that get printed out in "Ignore unexpected status-driver line"
messages if the interface is not found. Check for this case to avoid
that unnecessary print.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds the FST IEs received from the FST module into Beacon, Probe
Response, and (Re)Association Response frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Fast Session Transfer (FST) is the transfer of a session from a channel
to another channel in a different frequency band. The term "session"
refers to non-physical layer state information kept by a pair of
stations (STAs) that communicate directly (i.e., excludes forwarding).
The FST is implemented in accordance with IEEE Std 802.11ad-2012.
Definitions
* FST interface - an interface for which FST functionality is enabled
* FST group - a bunch of FST interfaces representing single
multi-band STA
* FST peer - a multi-band capable STA connected
* FST module - multi-band operation functionality implemented in
accordance with IEEE Std 802.11ad-2012 (see 10.32
Multi-band operation) as a part of hostapd/wpa_supplicant
* FST manager - an external application that implements custom FST
related logic, using the FST module's interfaces
accessible via CLI or D-Bus
This commit introduces only the FST module. Integration of the FST
module into the hostapd/wpa_supplicant and corresponding CLI/D-Bus
interfaces and FST related tests are covered in separate commits.
FST manager application is out of scope of these commits.
As FST aggregates a few interfaces into FST group, the FST module uses
global CLI for both commands and notifications. It also exposes
alternative non-interface based D-Bus subtree for this purposes.
Configuration and Initialization
* FST functionality can enabled by compilation flag (CONFIG_FST)
* hostapd/wpa_supplicant controlling multiple interfaces are used for
FST
* once enabled by compilation, the FST can be enabled for specific
interfaces in the configuration files
* FST interfaces are aggregated in FST groups (fst_group_id config file
entry), where each FST group:
- represents one multi-band device
- should have two or more FST interfaces in it
* priority (fst_priority config file entry) must be configured for each
FST interface. FST interface with higher priority is the interface FST
will always try to switch to. Thus, for example, for the maximal
throughput, it should be the fastest FST interface in the FST setup.
* default Link Loss Timeout (LLT) value can be configured for each FST
interface (fst_llt config file entry). It represents LLT to be used
by FST when this interface is active.
* FST interfaces advertise the Multi-band capability by including the
Multi-band element in the corresponding frames
FST CLI commands:
* fst list_groups - list FST groups configured.
* fst list_ifaces - list FST interfaces which belong to specific group
* fst iface_peers - list Multi-Band STAs connected to specific interface
* fst list_sessions - list existing FST sessions
* fst session_get - get FST session info
* fst session_add - create FST session object
* fst session_set - set FST session parameters (old_iface, new_iface,
peer_addr, llt)
* fst session_initiate - initiate FST setup
* fst session_respond - respond to FST setup establishemnt attempt by
counterpart
* fst session_transfer - initiate FST switch
* fst session_teardown - tear down FST Setup but leave the session object
for reuse
* fst session_remove - remove FST session object
FST CLI notifications:
* FST-EVENT-PEER - peer state changed (CONNECT/DISCONNECT)
* FST-EVENT-SESSION - FST session level notification with following
sub-events:
- EVENT_FST_SESSION_STATE - FST session state changed
- EVENT_FST_ESTABLISHED - previously initiated FST session became
established
- EVENT_FST_SETUP - new FST session object created due to FST session
negotiation attempt by counterpart
All the FST CLI commands and notifications are also implemented on D-Bus
for wpa_supplicant.
IEEE 802.11 standard compliance
FST module implements FST setup statemachine in compliance with IEEE
802.11ad (P802.11-REVmc/D3.3), as it described in 10.32 Multi-band
operation (see also Figure 10-34 - States of the FST setup protocol).
Thus, for example, the FST module initiates FST switch automatically
when FST setup becomes established with LLT=0 in accordance with
10.32.2.2 Transitioning between states.
At the moment, FST module only supports non-transparent STA-based FST
(see 10.32.1 General).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This helper function can be used to check whether a MAC address is a
multicast (including broadcast) address.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit implements hostapd global control interface notifications
infrastructure. hostapd global control interface clients issue
ATTACH/DETACH commands to register and deregister with hostapd
correspondingly - the same way as for any other hostapd/wpa_supplicant
control interface.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, hostapd only supported the case of EAPOL frames receiving
from interfaces enslaved into bridge. This commit adds support for any
Linux master (teaming, openvswitch, bonding, etc.) to be detected.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
