Commit graph

19144 commits

Author SHA1 Message Date
Jouni Malinen
bf98f7f3bc Added support for opportunistic key caching (OKC)
This allows hostapd to share the PMKSA caches internally when multiple
BSSes or radios are being controlled by the same hostapd process.
2008-08-03 20:17:58 +03:00
Jouni Malinen
3ff77e070d Fixed opportunistic key caching (OKC)
wpa_sm_set_config() can be called even if the network block does not
change. However, the previous version ended up calling
pmksa_cache_notify_reconfig() every time and this cleared the network
context from PMKSA cache entries. This prevented OKC from ever being used.

Do not call pmksa_cache_notify_reconfig() if the network context remains
unchanged to allow OKC to be used.
2008-08-03 20:16:59 +03:00
Jouni Malinen
3fbda8f943 WEXT: Fixed re-initialization of removed and re-inserted interface
Network device ifindex will change when the interface is re-inserted.
driver_wext.c will need to accept netlink events from "unknown" (based on
ifindex) interfaces when a previously used card was removed earlier. If the
previously removed interface is added back, the driver_wext data need to be
updated to match with the new ifindex value. In addition, the initial setup
tasks for the card (set interface up, update ifindex, set mode, etc.) from
wpa_driver_wext_init() need to be run again.
2008-07-25 01:30:53 +03:00
Jouni Malinen
27e120c46d Cleaned up some of invalid documentation related to channel configuration. 2008-07-23 03:51:10 +03:00
Jouni Malinen
b0f23e11ed Fixed NULL pointer dereference on error path [Bug 273] 2008-07-18 05:57:03 +03:00
Jouni Malinen
6652b61cd4 Fixed EAP-TNC not to include extra EAP header and TNC flags
The change to support fragmentation added extra function to generate the
EAP header, but forgot to remove the original code and ended up getting two
EAP headers and TNC flags field in the generated message. These header
fields need to be added only in the function that builds the final message
(and if necessary, fragments the data).
2008-07-17 02:17:37 +03:00
Dan Williams
93ef879f0f wext: fix maxrate calculation
When scan results got moved from wpa_scan_result -> wpa_scan_res, the
'maxrate' member was dropped from wpa_scan_res.  The D-Bus interface
used 'maxrate', which was replaced with wpa_scan_get_max_rate().
Unfortunately, wpa_scan_get_max_rate() returns 802.11 rate values
directly from the IE, where 'maxrate' was the rate in bits/second.  The
supplicant internally fakes an IE for wpa_scan_res from the value of
wpa_scan_result->maxrate, but interprets ->maxrate as an 802.11 rate
index.

As a side-effect, this fixes a soft-break of the D-Bus control API since
the wpa_scan_res change was introduced.
2008-07-15 20:07:50 +03:00
Jouni Malinen
6e33ca4529 Fixed wpa_scan_get_max_rate() to clear the basicrate flag when determining
the highest rate.
2008-07-15 20:05:50 +03:00
Michael Bernhard
886a807fb5 Make proactive key caching working again
Function 'wpa_sm_set_config' used the argument 'config' as the network
context which is a pointer to a local variable of the function
'wpa_supplicant_rsn_supp_set_config'.

This is one reason why no proactive key was generated. This network
context never matched with the network context saved in the pmksa cache
entries.

The structure 'rsn_supp_config' has already a member 'network_ctx' which
is now filled in by this patch with 'ssid'.

Signed-off-by: Michael Bernhard <michael.bernhard@bfh.ch>
2008-07-06 10:50:53 +03:00
Pavel Polischouk
9d6762cfca man wpa_supplicant: Clearly state which options are given per interface
Documentation appeared a little vague about which options are global and
which are tied to a particular interface. This leads to confusion when
using certain combinations of options, e.g. the command "wpa_supplicant
-c /etc/wpa_supplican.conf -u" will not do what is intuitively expected
from it - it will not read the config file given with -c option because
no -i option was given. This command is still valid because -u option is
used. The wpa_supplicant running like this will also not listen on any
control socket, because the socket file name is usually given in the
config file. This command line also happens to be the default in Fedora 9.
This patch does not try to change any behaviour, but rather document
these nuances clearly.
2008-06-18 11:52:20 +03:00
Jouni Malinen
eb0699b6ba Add IGTK/MFP configuration (disabled by default)
Added code to use suggested nl80211/cfg80211 API for setting MFP related
parameters. This is disabled by default since the API changes has not yet
been approved. The new commands can be enabled by defining
NL80211_MFP_PENDING (this will be removed once the API changes is
approved).
2008-06-18 11:23:59 +03:00
Jouni Malinen
089165e6a4 Added temporary #ifdef WEXT_MFP_PENDING around the MFP changes
Just in case, do not use the not-yet-approved WEXT changes even if someone
where to build wpa_supplicant with IEEE 802.11w support unless this new
macro has been defined explicitly.
2008-06-18 11:18:26 +03:00
Jouni Malinen
f0732adfe0 WEXT: IEEE 802.11w/MFP configuration
Added configuration of MFP related parameters with WEXT. The changes to
linux/wireless.h have not yet been applied to the Linux kernel tree, so the
code using them is still open to changes and is ifdef'ed out if
CONFIG_IEEE80211W is not set.
2008-06-18 11:13:33 +03:00
Masakazu Mokuno
84737a46a4 Add support for the driver which do 4-way handshake
Add the support for the Linux wireless drivers which want to do
4-way handshake and need to know the PSK before the handshake.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
2008-06-18 11:09:00 +03:00
Masakazu Mokuno
e0f775b2a4 Add the flags for the drivers which do 4-way handshake
Add the new flags which are supposed to be included in Linux 2.6.27
for the drivers which want to do 4-way handshake and to know PMK.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
2008-06-18 11:03:18 +03:00
Jouni Malinen
f3f7540edc Added WLAN_STA_MFP flag for driver wrappers so that they can configure the
driver to enable MFP (IEEE 802.11w) processing for the STA.
2008-06-17 11:21:11 +03:00
Jouni Malinen
94e5af7948 Added support for configuring IGTK
This needs changes in kernel code, too, but the cipher suite for IGTK is
defined in IEEE 802.11w, so this code in hostapd side can be added now.
2008-06-16 11:20:01 +03:00
Jouni Malinen
f598194e7a Removed forgotten todo entry 2008-06-10 20:57:32 +03:00
Jouni Malinen
1ef83fae63 Added support for AP mode Beacon transmission 2008-06-10 20:46:12 +03:00
Jouni Malinen
561c0c4c3e Set ACK flag properly for txstatus 2008-06-10 19:44:26 +03:00
Jouni Malinen
2b5ac52ee0 Use _irqsafe versions of ieee80211 rx and tx_status functions 2008-06-10 19:28:39 +03:00
Jouni Malinen
badba00bd4 Added start/stop handlers and do not send frames to stopped radios 2008-06-10 19:27:00 +03:00
Jouni Malinen
a218a713b8 Added a comment about hwsim# 2008-06-10 18:10:40 +03:00
Jouni Malinen
1f9afa67e3 Added global monitor interface (hwsim#)
This new netdev is created by hwsim, not mac80211, and as such, it is
available all the time (i.e., can be UP before starting mac80211 netdevs)
and it will receive all frames regardless of the channel etc.
2008-06-10 17:11:58 +03:00
Jouni Malinen
a837861751 Fixed tx() handler to use GFP_ATOMIC. 2008-06-10 15:49:06 +03:00
Jouni Malinen
de08c7248d Added mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
mac80211_hwsim is a Linux kernel module that can be used to simulate
arbitrary number of IEEE 802.11 radios for mac80211 on a single
device. It can be used to test most of the mac80211 functionality and
user space tools (e.g., hostapd and wpa_supplicant) in a way that
matches very closely with the normal case of using real WLAN
hardware. From the mac80211 view point, mac80211_hwsim is yet another
hardware driver, i.e., no changes to mac80211 are needed to use this
testing tool.
2008-06-10 13:31:25 +03:00
Jouni Malinen
3e2ad1b932 Fixed race condition between disassociation event and group key handshake
This avoids getting stuck in state where wpa_supplicant has canceled scans,
but the driver is actually in disassociated state. The previously used code
that controlled scan timeout from WPA module is not really needed anymore
(and has not been needed for past four years since authentication timeout
was separated from scan request timeout), so this can simply be removed to
resolved the race condition. As an extra bonus, this simplifies the
interface to WPA module.
[Bug 261]
2008-06-09 16:26:47 +03:00
Jouni Malinen
2eeaa5c9d0 EAP-PEAP: Moved the common peap_prfplus() function into a shared file 2008-06-09 10:32:12 +03:00
Jouni Malinen
3f5285e852 Added a preliminary nl80211/cfg80211 driver interface for wpa_supplicant
driver_nl80211.c is based on driver_wext.c and it is still using Linux
wireless extensions for many functions. Over time, the new driver interface
code should be modified to use nl80211/cfg80211 for everything.
2008-06-06 16:55:42 +03:00
Jouni Malinen
3f3339dfe7 Fixed a buffer overflow in nla_parse call
The first argument (tb) to nla_parse must have room for maxtype+1, not
maxtype, elements.
2008-06-06 16:51:17 +03:00
Pavel Roskin
f3833aee90 Fix compile warnings on 64-bit systems
Don't cast pointers to int in definitions of PRISM2_HOSTAPD_RID_HDR_LEN
and PRISM2_HOSTAPD_GENERIC_ELEMENT_HDR_LEN.  Use size_t instead.  That's
actually what the code needs.
2008-06-06 14:17:03 +03:00
Jouni Malinen
ad844747ca Updated the LibTomMath reference to use 0.41 version 2008-06-06 10:32:09 +03:00
Jouni Malinen
187bc466a3 Removed the 20% estimate on faster bignum routines
This was not accurate since this was mostly based on total runtime of an
eapol_test run. The real improvement in the bignum routines is much larger
(mayby twice as fast as before).
2008-06-06 10:30:43 +03:00
Jouni Malinen
b95394c66f Combined internal LibTomMath configuration into one option
CONFIG_INTERNAL_LIBTOMMATH_FAST=y in .config can now be used to enable all
optimized routines at a cost of about 4 kB. This is small enough increase
in size to justify simplified configuration.
2008-06-06 10:21:28 +03:00
Jouni Malinen
ec0205a87a Added an option to build internal LibTomMath with faster div routine
At the cost of about 1 kB of additional binary size, the internal
LibTomMath can be configured to include faster div routine to speed up DH
and RSA. This can be enabled with CONFIG_INTERNAL_LIBTOMMATH_FAST_DIV=y in
.config.
2008-06-06 10:11:17 +03:00
Jouni Malinen
b6ab429402 Read Michael MIC keys through TK2 union instead of offset from TK1
This gets rid of potential warnings about buffer bounds errors. The earlier
code works fine, but it is not the cleanest way of using the struct wpa_ptk
definition for TK1/TK2.
2008-06-05 21:00:56 +03:00
Jouni Malinen
7cdeb81e1f Fixed potential NULL pointer dereference if memory allocation fails 2008-06-05 20:44:30 +03:00
Jouni Malinen
815c5e1435 Fixed RADIUS client local address forcing for IPv6 (eapol_test)
Need to use the IPv6 address data in bind() call if IPv6 is selected.
2008-06-05 20:33:33 +03:00
Jouni Malinen
c5f5c91aeb Add faster, optional sqr routine for internal LibTomMath
At the cost of about 0.5 kB of additional binary size, the internal
LibTomMath can be configured to include faster sqr routine to speed up DH
and RSA. This can be enabled with CONFIG_INTERNAL_LIBTOMMATH_FAST_SQR=y in
.config.
2008-06-05 18:33:46 +03:00
Jouni Malinen
4fba48a5a7 Silence compiler warnings about out of array bounds indexes
struct wpa_ie_hdr had separate fields for 24-bit OUI and 8-bit oui_type
for WPA/RSN selectors. {WPA,RSN}_SELECTOR_{GET,PUT} access these four
octets through oui and the "out-of-bounds" access for the fourth octet is
actually reading/writing oui_type. This works fine, but some tools complain
about the array bounds "failure". Since oui_type is never accessed
separately, the simplest fix is to just combine these into a single 4-octet
field.
2008-06-05 17:50:53 +03:00
Dan Williams
1d3c75b3b6 Give adhoc associations a bit more time
Depending on how the driver implements IBSS searching and creation, it
may need to perform one or more scans before successfully completing the
association operation.  Therefore, increase the timeout for IBSS
association operations so that the supplicant doesn't interrupt the
driver as much.
2008-06-04 21:00:09 +03:00
Dan Williams
59c9707863 wext: handle mode switches correctly for mac80211
Since mac80211 requires that the device be !IFF_UP to change the mode
(and I think the old prism54 fullmac driver does too), do that.  This
shouldn't harm fullmac devices since they can handle mode switches on
the fly and usually don't care about up/down that much.
2008-06-04 20:55:57 +03:00
Jouni Malinen
87114163b7 Updated the comments since Montgomery reduction is now included 2008-06-04 11:59:45 +03:00
Jouni Malinen
8ccc0402b2 Internal LibTomMath: add optional support for Montgomery reduction
Add a cost of about 2.5 kB of additional cost, the internal LibTomMath can
be configured to include fast exptmod routine to speed up DH and RSA.
This can be enabled with CONFIG_INTERNAL_LIBTOMMATH_FAST_EXPTMOD=y in
.config.
2008-06-04 11:57:55 +03:00
Jouni Malinen
0527710dd3 Reduce integrated LibTomMath size by dropping negative exponent support
Current uses do not require support for negative exponent in exptmod, so we
can save about 1.5 kB in leaving out invmod.
2008-06-04 11:26:52 +03:00
Jouni Malinen
a8e16edc86 Introduced new helper function is_zero_ether_addr()
Use this inline function to replace os_memcmp(addr,
"\x00\x00\x00\x00\x00\x00", ETH_ALEN) == 0.
2008-06-03 18:08:48 +03:00
Jouni Malinen
957ed801e9 Fix USE_KERNEL_HEADERS build with compat-wireless
compat-wireless does not include linux/compiler.h to define __user, so
define it in hostapd code before including linux/wireless.h.
2008-06-03 11:57:52 +03:00
Dan Williams
7e1488494e Do not continually reschedule specific scans to help finding hidden SSIDs
In situations where the driver does background scanning and sends a
steady stream of scan results, wpa_supplicant would continually
reschedule the scan.  This resulted in specific SSID scans never
happening for a hidden AP, and the supplicant never connecting to the AP
because it never got found.  Instead, if there's an already scheduled
scan, and a request comes in to reschedule it, and there are enabled
scan_ssid=1 network blocks, let the scan happen anyway so the hidden
SSID has a chance to be found.
2008-06-03 11:37:48 +03:00
Jouni Malinen
8479707beb Include wireless_copy.h instead of linux/wireless.h to avoid conflicts
linux/wireless.h ends up including number of Linux kernel header files and
many of the definitions are conflicting with (or at least duplicating)
definitions in net/if.h.
2008-06-03 11:31:42 +03:00
Dan Williams
2e5a7b49a0 wext: don't overwrite BSS frequency
mac80211 sends _both_ channel and frequency in it's scan results, with
frequency first and channel second (it's since been fixed to send
channel first and frequency second to work around this issue).  This
results in wpa_supplicant getting the right value when the frequency
comes, but overwriting the value with '0' when the channel comes because
wpa_supplicant can't handle 5GHz channel numbers.  So if a valid
previous SIOCGIWFREQ event came in, don't try to overwrite it.
2008-06-02 20:47:09 +03:00