I have come to consider BUG_ON generally harmful. The idea of an assert is
to prevent a program to execute past a point where its state is known
erroneous, thus preventing it from dealing more damage to the data
(or hiding the traces of malfunction). The problem is, in kernel this harm
has to be balanced against the harm of forced reboot.
The last straw was our softmac tree, where "iwlist eth1 scan" causes
a lockup. It is absolutely frivolus and provides no advantages a normal
assert has to provide. In fact, doing this impedes debugging.
Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
It replaces returning WPA/RSN IEs as custom events with returning them
as IWEVGENIE events. I have tested that it returns proper information
with both Xsupplicant, and the latest development version of the Linux
wireless tools.
Signed-off-by: Chris Hessing <Chris.Hessing@utah.edu>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
On my system, I get unhandled management functions corresponding
to IEEE80211_STYPE_REASSOC_REQ and IEEE80211_STYPE_ASSOC_REQ. The
attached patch adds the logic to pass these requests off to a user
stack. The patches to implement these requests in softmac have already
been sent to Johannes Berg.
Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch creates two functions ieee80211_wx_set_auth and
ieee80211_wx_get_auth that can be used by drivers for the wireless
extension handlers instead of writing their own, if the implementation
should be software only.
These patches enable using bcm43xx devices with WPA and this seems (as
far as I can tell) to be the only difference between the stock ieee80211
and softmac's ieee80211 left.
Signed-Off-By: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch contains the following changes:
- add a CONFIG_WIRELESS_EXT select'ed by NET_RADIO for conditional
code
- remove the now no longer required #ifdef CONFIG_NET_RADIO from some
#include's
Based on a patch by Jean Tourrilhes <jt@hpl.hp.com>.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch, generated against 2.6.16-rc1-git4, corrects two typographical
errors in ieee80211_rx.c and adds the facility name to a bare printk.
Signed-Off-By: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Added default handlers for various 802.11h DFS and TPC information
elements. Moved all information elements into single location (called
from two places). Added debug message with information on unparsed IEs
if debug_level set. Added code to reset network IBSS DFS information
when appropriate. Added code to invoke driver callback for 802.11h
ACTION STYPE. Changed a few printk's to IEEE80211_DEBUG_MGMT.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
To support IEEE 802.11h in IBSS, an ibss_dfs field is added to struct
ieee80211_network. In IBSS, if one STA sends a beacon with DFS info
(for radar detection), all the other STAs should receive and store
this DFS. All STAs should send the DFS as one of the information
element in the beacon they are scheduled to send (if possible) in
the future.
Since the ibss_dfs has variable length, it must be allocated
dynamically. ieee80211_network_reset() is added to clear the ibss_dfs
field. ieee80211_network_free() is also updated to free the ibss_dfs
field if it is not NULL.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add 802.11h data types and structure definitions to ieee80211.h.
Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch adds ieee80211 TKIP build_iv() method to support hardwares
that can do TKIP encryption but relies on ieee80211 layer to build
the IV. It also changes the build_iv() interface to return the key
if possible after the IV is built (this is required by TKIP).
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Added partial support of TIM information element parsing
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
kmalloc+memset -> kzalloc cleanups in ieee80211_crypt_tkip
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add spectrum management information and use stat.signal to provide
signal level information.
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Log to wireless network stats if netif_rx() drops the packet.
(also trailing whitespace and Lindent cleanups as part of patch-apply
process)
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
>If encryption is enabled, each fragment payload size is reduced by enough space
>to add the prefix and postfix (IV and ICV totalling 8 bytes in the case of WEP)
>So if you have 1500 bytes of payload with ieee->fts set to 500 without
>encryption it will take 3 frames. With WEP it will take 4 frames as the
>payload of each frame is reduced to 492 bytes.
Text is correct, but in picture (IV,payload,ICV) sits inside SNAP.
Patch corrects this.
Signed-Off-By: Denis Vlasenko <vda@ilport.com.ua>
Acked-By: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Limit the amount of output given to iwlist scan.
Signed-off-by: Hong Liu <hong.liu@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The code for pulling the key to use for decrypt was correctly using
the host_mc_decrypt flag. The code that actually decrypted,
however, was based on host_decrypt. This patch changes this
behavior.
Signed-off-by: Etay Bogner <etay.bogner@gmail.com>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Remove the "inline" keyword from a bunch of big functions in the kernel with
the goal of shrinking it by 30kb to 40kb
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This changes some memcmp(one,two,ETH_ALEN) to compare_ether_addr(one,two).
Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes some of the ieee80211 crypto related code so that
instead of having the host fully do crypto operations, the host_build_iv
flag works properly (for WEP in this patch) which, if turned on,
requires the hardware to do all crypto operations, but the ieee80211
layer builds the IV. The hardware also has to build the ICV.
Previously, the host_build_iv flag couldn't be used at all for WEP, and
not alone (with both host_decrypt and host_encrypt disabled) because the
crypto algorithm wasn't assigned. This is also fixed.
I have tested this patch both in host crypto mode and in hw crypto mode
(with the Broadcom chipset).
[resent, signing digitally caused it to be MIME-junked, sorry]
Signed-Off-By: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
From: Stephen Hemminger <shemminger@osdl.org>
is_multicast_ether_addr() accepts broadcast too, so the
is_broadcast_ether_addr() calls are redundant.
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the following compile error with CONFIG_NET_RADIO=n and
CONFIG_IEEE80211=y:
LD .tmp_vmlinux1
net/built-in.o: In function `ieee80211_rx':
: undefined reference to `wireless_spy_update'
make: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The functions ieee80211_wx_{get,set}_encodeext fail if one tries to set
unicast (IW_ENCODE_EXT_GROUP_KEY not set) keys at key indices>0. But at
least some Cisco APs dish out dynamic WEP unicast keys at index !=0.
Signed-off-by: Volker Braun <volker.braun@physik.hu-berlin.de>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
James Ketrenos wrote:
> [3/4] Use the tx_headroom and reserve requested space.
This patch introduced a compile problem; patch below corrects this.
Fixed compilation error due to not passing tx_headroom in
ieee80211_tx_frame.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* Use GFP mask on TX skb allocation.
* Use the tx_headroom and reserve requested space.
Signed-off-by: Michael Buesch <mbuesch@freenet.de>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Without this patch, if you try and use a key that has not been
configured, for example:
% iwconfig eth1 key deadbeef00 [2]
without having configured key [1], then the active key will still be
[1], but privacy will now be enabled. Transmission of a packet in this
situation will result in a kernel oops.
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
- added typedef unsigned int __nocast gfp_t;
- replaced __nocast uses for gfp flags with gfp_t - it gives exactly
the same warnings as far as sparse is concerned, doesn't change
generated code (from gcc point of view we replaced unsigned int with
typedef) and documents what's going on far better.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix implicit nocast warnings in ieee80211 code, including __nocast:
net/ieee80211/ieee80211_tx.c:215:9: warning: implicit cast to nocast type
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Fix implicit nocast warnings in ieee80211 code:
net/ieee80211/ieee80211_tx.c:215:9: warning: implicit cast to nocast type
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
initialized which can cause problems for drivers that expect the network
structure to be completely filled in.
This patch will make sure the network is filled in as much as possible.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
results in a lot of duplicate code.
This will move the parsing stage into a seperate function.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
