Commit graph

91 commits

Author SHA1 Message Date
Luciano Coelho
b59e6f267b Add filter support to scheduled scans
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>
2011-10-15 18:53:14 +03:00
Luciano Coelho
cbdf3507e9 Add scheduled scan driver operations
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>
2011-10-15 18:53:13 +03:00
Jouni Malinen
24f6497c34 GAS: Use off-channel operations for requests
This separates off-channel Action frame TX/RX from P2P into a generic
implementation that can now be used both for P2P and GAS needs.
2011-09-29 22:19:51 +03:00
Jouni Malinen
04ea7b7947 GAS: Add a generic GAS query module
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.
2011-09-29 22:19:15 +03:00
Jouni Malinen
22628eca34 Support driver-based BSS selection in ap_scan=1 mode
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.
2011-09-26 14:57:23 +03:00
Jouni Malinen
64fa840a97 nl80211: Fix WPA_VERSIONS attribute for Connect command
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().
2011-09-02 20:40:23 +03:00
Jayant Sane
c2762e410f P2P: Update D-Bus network object semantics during group formation
Do not emit network objects during P2P group formation since such
network objects can confuse certain apps. Instead, a persistent group
object is created to allow apps to keep track of persistent groups.
Persistent group objects only represent the info needed to recreate the
group.

Also fixes a minor bug in the handling of persistent group objects
during WPS operations.

Signed-off-by: Jayant Sane <jayant.sane@intel.com>
2011-06-23 21:25:13 +03:00
Jouni Malinen
7dcdcfd68d P2P: Start GO without extra scan step
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.
2011-06-21 11:47:03 +03:00
Johannes Berg
9abafccc0d DBus: Add support for P2P primitives
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2011-06-12 15:08:19 -07:00
Jouni Malinen
38e24575c1 random: Add support for maintaining internal entropy store over restarts
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.
2011-05-31 20:07:11 +03:00
Dmitry Shmidt
67b9bd089b Make scan interval configurable
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>
2011-04-11 23:14:38 +03:00
Sam Leffler
78633c3709 wpa_supplicant: Parameterize BSS table expiration age + count
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.
2011-03-20 12:40:59 +02:00
Paul Stewart
cf83fb0b5b wpa_supplicant: Add wpa_supplicant_get_eap_mode method
Signed-off-by: Paul Stewart <pstew@google.com>
2011-03-15 13:53:08 +02:00
Johannes Berg
11fb02be67 P2P: Fix p2p_long_listen
There are two issues with p2p_long_listen:
 1) max_remain_on_channel is assumed to be 5 seconds,
 2) if max_remain_on_channel is not a full multiple of
    seconds, accounting breaks.

Fix these by converting p2p_long_listen to ms and
tracking it according to max_remain_on_channel.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2011-02-01 18:09:38 +02:00
Johannes Berg
190b9062b2 P2P: Add option for offloading off-channel TX to the driver
With the new kernel functionality coming to Linux to allow off-channel
TX, we can take advantage of that in the P2P code that currently uses
remain-on-channel. If a driver advertises support for it, it will be
asked to handle off-channel TX by itself.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2010-12-29 13:59:17 +02:00
Jouni Malinen
7d878ca769 Use SA Query procedure to recovery from AP/STA state mismatch
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.
2010-12-19 11:58:00 +02:00
Jouni Malinen
0f85ef5cf0 P2P: Use larger pending_interface_name buffer
In theory, the interface name could be longer than IFNAMSIZ in
some systems, so use the same size buffer for this field as is
used with the main interface name.
2010-11-26 15:49:26 +02:00
Jouni Malinen
0fb337c121 Extend load balancing optimization in BSS blacklisting
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.
2010-11-26 11:36:03 +02:00
Jouni Malinen
f47d639d49 SME: Optimize recovery from common load balancing mechanisms
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.
2010-11-25 22:51:56 +02:00
Jouni Malinen
9b1ab931b1 P2P: Allow multiple scan runs to find GO for p2p_connect join
If the GO is not found, we cannot send Provisioning Discovery Request
frame and cannot really connect anyway. Since the Provisioning
Discovery is a mandatory part, it is better to continue join-scan
until the GO is found instead of moving to the next step where
normal connection scan is used (PD would not be used from there).

Use a limit of 10 scan attempts for p2p_connect join to avoid getting
in infinite loop trying to join. If the GO is not found with those
scans, indicate failure (P2P-GROUP-FORMATION-FAILURE) and stop the
join attempt.
2010-11-15 16:15:38 +02:00
Anil Gathala Sudha
7cfc4ac319 P2P: Add support for automatic channel selection at GO
The driver wrapper may now indicate the preferred channel (e.g., based
on scan results) on both 2.4 GHz and 5 GHz bands (and an overall best
frequency). When setting up a GO, this preference information is used
to select the operating channel if configuration does not include
hardcoded channel. Similarly, this information can be used during
GO Negotiation to indicate preference for a specific channel based
on current channel conditions.

p2p_group_add command can now use special values (freq=2 and freq=5)
to indicate that the GO is to be started on the specified band.
2010-11-10 13:33:47 +02:00
Jouni Malinen
0ae2aa14a5 Fix compiler warning from previous commit 2010-10-27 11:31:32 +03:00
Jouni Malinen
2f9c6aa665 Fix memory leak in P2P build without MLME
The ieee80211_sta_free_hw_features() function is now used outside
the MLME code, so better make sure it gets included in the build
to avoid leaking memory.
2010-10-27 11:26:46 +03:00
Jouni Malinen
c973f3868a P2P: Remove P2P group on driver resource becoming unavailable
Add a new driver event, EVENT_INTERFACE_UNAVAILABLE, for indicating
that the driver is not able to continue operating the virtual
interface in its current mode anymore, e.g., due to operating
channel for GO interface forced to a DFS channel by another virtual
interface.

When this happens for a P2P group interface, the P2P group will
be terminated and P2P-GROUP-REMOVED event shows the reason for
this as follows:
P2P-GROUP-REMOVED wlan0 GO reason=UNAVAILABLE
2010-10-25 19:16:11 +03:00
Jouni Malinen
3071e18109 P2P: Add mechanism for timing out idle groups
A new configuration parameter, p2p_group_idle, can now be used to set
idle timeout value for P2P groups in seconds (0 = no timeout). If set,
this values is used to remove P2P group (both GO and P2P client)
interfaces after the group has been idle (no clients/GO seen) for the
configuration duration.

The P2P-GROUP-REMOVED event is now indicating the reason for group
removal when known. For example:
P2P-GROUP-REMOVED wlan0 GO reason=REQUESTED
P2P-GROUP-REMOVED wlan1 client reason=IDLE
2010-10-25 18:24:15 +03:00
Ardong Chen
0d0a8ca1cc Add option for disabling automatic reconnection on disconnection
ctrl_interface STA_AUTOCONNECT command can now be used to disable
automatic reconnection on receiving disconnection event. The default
behavior is for wpa_supplicant to try to reconnect automatically, i.e.,
to maintain previous behavior.
2010-09-10 10:30:26 -07:00
Jouni Malinen
c4ea4c5c90 P2P: Allow driver wrapper to indicate how many stations are supported
This can be used to limit the number of clients allowed to connect
to the group on the GO.
2010-09-09 07:17:21 -07:00
Jouni Malinen
eea2fd9eff P2P: Add mechanism for configuring UAPSD parameters for group
This is needed to be able to change parameters for dynamically
created interfaces between the creation of the interface and
association/start AP commands.

Following ctrl_interface commands can now be used:

P2P_SET client_apsd disable
- disable configuration (i.e., use driver default) in client mode

P2P_SET client_apsd <BE>,<BK>,<VI>,<VO>;<max SP Length>
- enable UASPD with specific trigger configuration (0/1) per AC
  (max SP Length is currently ignored)

P2P_SET go_apsd disable
- disable configuration (i.e., use driver default) in AP mode

P2P_SET go_apsd <0/1>
- disable/enable APSD in AP mode
2010-09-09 07:17:21 -07:00
Jouni Malinen
72044390f3 P2P: Add support for cross connection
If enabled, cross connection allows GO to forward IPv4 packets
using masquerading NAT from the P2P clients in the group to an
uplink WLAN connection. This is disabled by default and can be
enabled with "wpa_cli p2p_set cross_connect 1" on the P2P device
interface.
2010-09-09 07:17:20 -07:00
Jouni Malinen
6e6963ea86 P2P: Add test mode for SD to force fragmented response 2010-09-09 07:17:19 -07:00
Jouni Malinen
108def931e P2P: Add command for pre-authorizing an invitation to an active group
This is mainly designed for testing and allows p2p_connect join auth
to be used to accept a specific invitation to an active group that
may be received in the future.
2010-09-09 07:17:19 -07:00
Jouni Malinen
3c5126a41f P2P: Set Device Password ID in WPS M1/M2 per new rules
If the P2P client (WPS Enrollee) uses a PIN from the GO (Registrar),
Device Password ID in M1 & M2 is set to Registrar-specified.
2010-09-09 07:17:19 -07:00
Jouni Malinen
07a30a66c3 P2P: Do not schedule new remain-on-channel if waiting for drv event
The driver event for remain-on-channel may be delayed in a way that
allows management-frame-received event to be received before
wpa_supplicant knows that the driver is actually already on the
previously requested channel. We should not request a new
remain-on-channel to send a response to just a frame if we are waiting
for the driver to get to the same channel. Instead, just continue
waiting for the driver event.
2010-09-09 07:17:18 -07:00
Jouni Malinen
b22128efdc P2P: Add initial version of P2P Module 2010-09-09 07:17:17 -07:00
Jouni Malinen
611aea7d41 Allow ctrl_iface SET command to change global config parameters 2010-09-09 07:17:16 -07:00
Jouni Malinen
42f50264c0 WPS: Make fragment size configurable for EAP-WSC peer
"wpa_cli set wps_fragment_size <val>" can now be used to configure the
fragment size limit for EAP-WSC.
2010-09-09 06:07:49 -07:00
Jouni Malinen
24f7694062 Remove get-first-scan-results-before-request optimization
This has already been disabled in most use cases and can result
in problems with some drivers, so better just remove it completely.
2010-07-18 16:11:03 -07:00
Jouni Malinen
c706d5aa17 Add wpa_supplicant AP mode events for Public Action frames 2010-04-11 20:33:33 +03:00
Jouni Malinen
508545f3a9 Add more wpa_supplicant AP mode parameters for the driver wrapper
This makes it easier to configure AP mode for drivers that take care
of WPA/RSN IE generation.
2010-04-11 20:02:01 +03:00
Jouni Malinen
4b768ed0b2 Add registerable callback for wpa_supplicant AP mode completion 2010-04-11 19:59:33 +03:00
Jouni Malinen
8cd82735cb Add an option to request a connection without a new scan 2010-04-11 19:55:40 +03:00
Jouni Malinen
64e58f5189 Add option for overriding scan result handler for a single scan 2010-04-11 19:53:31 +03:00
Jouni Malinen
814782b9fe Allow driver wrappers to indicate maximum remain-on-channel duration 2010-04-11 19:42:37 +03:00
Jouni Malinen
17a4734dc4 Optimize post-WPS scan based on channel used during provisioning
Scan only the frequency that was used during provisioning during the
first five scans for the connection. This speeds up connection in the
most likely case where the AP remains on the same channel. If the AP is
not found after these initial scans, all channels will be scanned.
2010-04-11 19:06:42 +03:00
Jouni Malinen
86d4f806da Add ctrl_iface command for triggering a roam to a specific BSS
'wpa_cli roam <bssid>' can now be used to test roaming within an ESS
(e.g., for FT over-the-air). This command will bypass a new scan and
will select the BSS based on the specified BSSID. It is responsibility
of the caller to make sure that the target AP is in the BSS table.
This can be done, e.g., by running a scan before the roam command,
if needed.
2010-04-10 22:56:55 +03:00
Jouni Malinen
62c72d7299 FT: Process reassoc resp FT IEs when using wpa_supplicant SME 2010-03-13 21:13:18 +02:00
Jouni Malinen
207ef3fb12 Add suspend/resume notifications
wpa_supplicant can now be notified of suspend/resume events, e.g.,
from pm-action scripts. This allows wpa_supplicant to clear information
that may become invalid during a suspend operation.
2010-02-27 18:46:02 +02:00
Jouni Malinen
abd9fafab6 Standardize on a single definition of auth_alg bitfield values 2010-01-03 21:14:40 +02:00
Jouni Malinen
9ba9fa07cc Move wpa_supplicant specific scan code away from src/drivers
This fits better in wpa_supplicant/scan.c. Couple of remaining
scan_helpers.c functions are currently used in driver wrappers,
but they can likely be removed in the future.
2010-01-03 18:48:11 +02:00
Jouni Malinen
a8e0505bf0 Use driver event, EVENT_EAPOL_RX, for EAPOL frame indication 2010-01-03 17:44:40 +02:00