Put glue code in place to propagate TDLS related driver capabilities to
the TDLS state machine.
If the driver doesn't support capabilities, assume TDLS is supported
internally.
When TDLS is explicitly not supported, disable all user facing TDLS
operations.
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
The hardware feature data is required in several different places
throughout the code. Previously, the data was acquired and freed on
demand, but with this patch wpa_supplicant will keep a single copy
around at runtime for everyone to use.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
This avoids allocating global driver state for driver wrappers that
are built in but not used. This can save some resources and avoids
failures with driver_nl80211.c that is now initializing netlink
connections for nl80211 in global_init().
This code was used only with driver_test.c to allow MLME operations
in hostapd to be tested without having to use a real radio. There
are no plans on extending this to any other use than testing and
mac80211_hwsim has now obsoled the need for this type of testing.
As such, we can drop this code from wpa_supplicant to clean up the
implementation of unnecessary complexity.
When initializing, the scheduled scan code was being called before
everything is ready. With normal scans, the first scan round is
delayed, so the initialization is finished by the time it really
starts.
Add a function that can be used to request a delayed scheduled scan.
The scan will only start after the specified time has elapsed. Call
this function instead of starting the scheduled scan directly during
driver initialization.
Signed-off-by: Luciano Coelho <coelho@ti.com>
Pass SSIDs to be matched in scheduled scan results. Only the SSIDs
that are included in the match lists will be reported by the driver,
so the filtering can be offloaded to the hardware and the power
consumption can be reduced.
Signed-off-by: Luciano Coelho <coelho@ti.com>
This patch uses sched_scan, if available, when the driver is
initialized. It also adds a couple of cancel operations where
appropriate.
Signed-off-by: Luciano Coelho <coelho@ti.com>
In new Linux kernel versions (>=3.0), nl80211 adds scheduled scan
capability. In order to use this feature to its full extent, we need
to support it in the wpa_supplicant core, so that it can also be used
by other drivers.
This commit adds initial scheduled scan support operations and events.
Signed-off-by: Luciano Coelho <coelho@ti.com>
This allows the AP to be selected based on the BSSID when WPA-PSK
is used with a passphrase. The PSK will be derived from the passphrase
after the SSID has been learned from scan results.
This implements GAS request mechanism that is aimed at being used to
replace use case specific GAS/ANQP implementations in the future.
Compared to the earlier implementation in P2P SD, this implementation
includes support for multiple concurrent requests and more thorough
validation of frames against the pending query data.
GAS header processing, including comeback and reassembly, are handled
within gas_query.c and the users of this module will only need to
provide the Query Request and process the (possibly reassembled)
Query Response.
There is no need to request periodic bgscans when the driver claims
to have capability for roaming within ESS. Ignoring the bgscan
configuration allows the same configuration file to be used both
with drivers the handle roaming and with drivers that don't.
If the driver indicates that it supports BSS selection (including
roaming within an ESS) with WPA_DRIVER_FLAGS_BSS_SELECTION, modify
ap_scan=1 mode to behave like ap_scan=2 mode for BSS selection.
The initial scan is still done to avoid the need for strict
configuration of or security parameters (e.g., to figure out whether
TKIP or CCMP is being used as the group cipher). However, when
requesting the driver to connect, the bssid and freq parameters are
not provided to leave the driver in control of selecting which BSS
to use and to allow the driver to decide when to roam.
If a network configuration block is removed or modified, flush
all PMKSA cache entries that were created using that network
configuration. Similarly, invalidate EAP state (fast re-auth).
The special case for OKC on wpa_supplicant reconfiguration
(network_ctx pointer change) is now addressed as part of the
PMKSA cache flushing, so it does not need a separate mechanism
for clearing the network_ctx values in the PMKSA cache.
The previous code was trying to figure out which WPA version is
used based on the extra IEs requested for Association Request. That
did not work properly in cases where non-WPA networks are used with
some extra IEs. Fix this by using more robust mechanism for passing
the WPA versions from core wpa_supplicant to the driver_ops
associate().
Fix the previous code that was hardcoding the p2p parameter based
on the driver P2P capability regardless of whether the connection
was really used for P2P or not.
This makes sure that the old connection is not maintained if the new
configuration does not allow it anymore. In addition, it is better to
use wpa_supplicant_clear_connection() instead of just clearing
wpa_s->current_ssid here to keep things in sync.
There are some corner cases, where the wpa_supplicant_req_scan() call
may end up scheduling a scan even if we are about to start a GO. Avoid
this by explicitly marking the GO network to be selected for the next
connection.
This can be used to avoid rejection of first two 4-way handshakes every
time hostapd (or wpa_supplicant in AP/IBSS mode) is restarted. A new
command line parameter, -e, can now be used to specify an entropy file
that will be used to maintain the needed state.
It is now possible to configure the the time in seconds that
wpa_supplicant waits before requesting a new scan after failing to find
a suitable network in scan results.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
The "debug_strings" private array in dbus_new_handles.c has fallen out
of sync with wpa_debug.h. Add the new "excessive" level to the head of
the list, realigning everything.
Signed-off-by: Paul Stewart <pstew@google.com>
Change the old design of running a single long living RSN IBSS
instance to keep a separate instance for each IBSS connection.
This fixes number of issues in getting keys set properly for
new connections and is in general quite a bit more correct
design.
Replace compile-time BSS cache expiration age and scan count by config
parameters that can be set via wpa_cli and the new D-Bus API. The latter
is done with interface properties BSSExpireAge and BSSExpireCount.
Move the code snippet to switch on bgscan over to wpa_supplicant.c
from event.c, so that it can be activated on wpa_supplicant_set_state().
Also create a centralized place to switch off bgscan. bgscan is now
turned on in COMPLETED, not ASSOCIATED.
mac80211 authentication or association operation may get stuck for some
reasons, so wpa_supplicant better use an internal timer to recover from
this.
Signed-off-by: Ben Greear <greearb@candelatech.com>
This converts number of debugging messages to use wpa_msg() in order
to allow the interface name to be shown with the messages.
A new function, wpa_dbg(), is introduced to allow
CONFIG_NO_STDOUT_DEBUG=y builds to remove the debug strings. This is
otherwise identical with wpa_msg(), but it gets compiled out if stdout
debugging is disabled.
This makes log files much more readable if multiple interfaces
are being controlled by the same process. The interface name is
added to stdout/file/syslog entries, but not to the messages
sent to control interface monitors to avoid issues with parsing
in external programs.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Previously, both NULL and ff:ff:ff:ff:ff:ff addr were used in various
places to indicate default/broadcast keys. Make this more consistent
and useful by defining NULL to mean default key (i.e., used both for
unicast and broadcast) and ff:ff:ff:ff:ff:ff to indicate broadcast
key (i.e., used only with broadcast).
Use NULL instead of (u8 *) "" as the seq value and make sure the
driver wrapper implementations can handle NULL value. This was
previously already done in number of places, but not everywhere.
If a station received unprotected Deauthentication or Disassociation
frame with reason code 6 or 7 from the current AP, there may be a
mismatch in association state between the AP and STA. Verify whether
this is the case by using SA Query procedure. If not response is
received from the AP, deauthenticate.
This implementation is only for user space SME with
driver_nl80211.c.
Some drivers are not providing exactly reliable error codes (e.g.,
with WEXT), but others may actually indicate reliable information.
Allow driver wrappers to indicate if that is the case and use
optimizations if so. For now, this improves nl80211 with
NL80211_CMD_CONNECT for a case where connection request fails.
Move the previously SME specific optimization code into generic
function that can be used from non-SME code, too, and use it to
handle disconnection events. In other words, allow disconnection
event to trigger similar optimized scanning case to handle a
common load balancing mechanism. If there is another BSS in the
same ESS when we receive a disconnection event, scan only the
known frequencies of such other BSSes on the next attempt to
speed up recovery.
When authentication or association fails when trying to connect to
a BSS in an ESS that has multiple BSSes based on previous scans,
limit the first recovery scan to only the known channels that has
been seen previously. This speeds up recovery in some of the most
commonly used load balancing mechanisms in enterprise WLAN
networks.
wpa_supplicant_set_driver() is returning an error if the first driver
in the driver list is not built in. It should continue through the
driver list until it finds one that's built in.
