If the RTNL is held when we invoke flush_scheduled_work() we could
deadlock.  One such case is linkwatch, it is a work struct which tries
to grab the RTNL semaphore.

The most common case are net driver ->stop() methods.  The
simplest conversion is to instead use cancel_{delayed_}work_sync()
explicitly on the various work struct the driver uses.

This is an OK transformation because these work structs are doing
things like resetting the chip, restarting link negotiation, and so
forth.  And if we're bringing down the device, we're about to turn the
chip off and reset it anways.  So if we cancel a pending work event,
that's fine here.

Some drivers were working around this deadlock by using a msleep()
polling loop of some sort, and those cases are converted to instead
use cancel_{delayed_}work_sync() as well.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reported by Santiago Garcia Mantinan <hostap@manty.net>
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The "registers" entry was incorrectly created in the procfs root instead
of the device specific directory.  Move "registers" registration
immediately after the containing procfs directory is created.
Signed-off-by: NMathieu Chouquet-Stringer <mchouque@free.fr>
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

If print_mac() is used inside of a pr_debug() the compiler
can't see that the call is redundant so still performs it
even of pr_debug() ends up being a nop.

So don't use print_mac() in such cases in hot code paths,
use MAC_FMT et al. instead.

As noted by Joe Perches, pr_debug() could be modified to
handle this better, but that is a change to an interface
used by the entire kernel and thus needs to be validated
carefully.  This here is thus the less risky fix for
2.6.25
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Card reported by Ångström user:
http://bugs.openembedded.net/show_bug.cgi?id=3236

Socket 1:
   product info: "Wireless LAN", "11Mbps PC Card", "Version 01.02", ""
   manfid: 0x0156, 0x0002
   function: 6 (network)
Signed-off-by: NMarcin Juszkiewicz <openembedded@haerwu.biz>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There were two identical prototypes for hostap_80211_rx() in
drivers/net/wireless/hostap/hostap_80211.h.

This patch fixes kernel Bugzilla #8930.

Reported by Christoph Burger-Scheidlin.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

If the third PCMCIA ID string specifies the MAC chip, the fourth ID
string doesn't need to be matched.  Even if it's different, it will be
compatible with the driver.

This ensures that other different revisions of the card will be
supported.
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Just leave hfa384x_info_frame as-is, don't convert in place.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

it's le32, not le16...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

* use irq_handler_t where appropriate

* no need to use 'irq' function arg, its already stored in a data struct

* rename irq handler 'irq' argument to 'dummy', where the function
  has been analyzed and proven not to use its first argument.

* remove always-false "dev_id == NULL" test from irq handlers

* remove pointless casts from void*

* declance: irq argument is not const

* add KERN_xxx printk prefix

* fix minor whitespace weirdness
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

Introduce scan capabilities to WEXT so that userspace can do intelligent
things with scan behavior such as handling hidden SSIDs more gracefully.
If the driver reports a specific scan capability, the driver must
respect the options specified in the iw_scan_req structure when handling
the SIOCSIWSCAN call, unless it's mode or state does not allow it to do
so, in which case it must return an error.

This version switches to Dave Kilroy's suggestion of claiming unused
padding space for the scan_capa field.
Signed-off-by: NDan Williams <dcbw@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fix section mismatch by changing variable name to match one of the
whitelisted (allowable) names for pointing into init data:

WARNING: vmlinux.o(.data+0xce618): Section mismatch: reference to .init.data:prism2_plx_id_table (between 'prism2_plx_drv_id' and 'dev_info')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix section mismatch warning:

WARNING: vmlinux.o(.data+0x36fcc): Section mismatch: reference to .init.data:prism2_pci_id_table (between 'prism2_pci_drv_id' and 'prism2_pci_funcs')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.

[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

define global BIT macro

move all local BIT defines to the new globally define macro.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

deal with signedness of the stuff passed to set_bit() et.al.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Socket 1:
product info: "The Linksys Group, Inc.", "Wireless Network CF Card", "ISL37300P", "RevA"
manfid: 0x0274, 0x3301
Signed-off-by: NMarcin Juszkiewicz <openembedded@haerwu.biz>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This adds the PCMCIA device ID for the Deutsche Telekom T-Sinus 111card to
hostap_cs.

$ /sbin/lspcmcia -v
[...]
Socket 0 Device 0:      [hostap_cs]             (bus ID: 0.0)
        Configuration:  state: on
        Product Name:   T-Sinus 111card 2.0.0
        Identification: manf_id: 0x01bf card_id: 0x3301
                        function: 6 (network)
                        prod_id(1): "T-Sinus" (0x8c389dc1)
                        prod_id(2): "111card" (0x6a23ac17)
                        prod_id(3): --- (---)
                        prod_id(4): "2.0.0" (0x92b9effb)
Signed-off-by: NStefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

As detailed at https://bugs.gentoo.org/159646 hostap with hostapd confuses
udev by presenting 2 interfaces with the same MAC address. Also, at the time
of detection, the 'type' attribute is 1, identical to other hostap interfaces.

The AP interface is supposed to have type ARPHRD_IEEE80211 (801), but this is
not set until after registration.

Setting it before register_netdev() is called allows us to avoid this
confusion. We can do this by propogating the HOSTAP_INTERFACE type through
to hostap_setup_dev().
Signed-off-by: NDaniel Drake <dsd@gentoo.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This is nicer than the MAC_FMT stuff.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NDenis Cheng <crquan@gmail.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Replacing accesses to dev->priv to netdev_priv(dev). The replacment
is safe when netdev_priv is used to access a private structure that is
right next to the net_device structure in memory. Cf
http://groups.google.com/group/comp.os.linux.development.system/browse_thread/thread/de19321bcd94dbb8/0d74a4adcd6177bd
This is the case when the net_device structure was allocated with
a call to alloc_netdev or one of its derivative.
Signed-off-by: NYoann Padioleau <padator@wanadoo.fr>
Cc: mcgrof@gmail.com
Cc: linux-wireless@vger.kernel.org
Cc: akpm@linux-foundation.org
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The Host AP driver uses a semaphore as mutex. Use the mutex API
instead of the (binary) semaphore.
Signed-off-by: NMatthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: NSatyam Sharma <satyam@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch makes /proc/net per network namespace.  It modifies the global
variables proc_net and proc_net_stat to be per network namespace.
The proc_net file helpers are modified to take a network namespace argument,
and all of their callers are fixed to pass &init_net for that argument.
This ensures that all of the /proc/net files are only visible and
usable in the initial network namespace until the code behind them
has been updated to be handle multiple network namespaces.

Making /proc/net per namespace is necessary as at least some files
in /proc/net depend upon the set of network devices which is per
network namespace, and even more files in /proc/net have contents
that are relevant to a single network namespace.
Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove pointless and never-called enable_wake() hook from pci_driver and
from documentation.  Evidently this was introduced in the 2.4.6 kernel,
but there's no evidence it was ever called; and it was rarely implemented.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The driver version number has not been updated since the driver was
included in the main kernel tree and there is no plan on updating this
in the future either. At this point, the only correct way to refer to
the version is to use the kernel version. The 0.4.4 version is
confusing since there are external version with higher version number
even though they are not actually any newer than the in-tree version.

Let's get rid of the version number in the kernel tree in order to
avoid this kind of confusion.
Signed-off-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use list_for_each_entry() instead of manual iteration and
substitute some list_for_each() loops with list_for_each_entry().
Signed-off-by: NMatthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This may be useful in mesh setups when most stations act as repeaters only.
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

When hostap_tx_encrypt() tries to allocate enough headroom and
tailroom for ieee80211 encryption, it only makes enough room for the
"mpdu" phase of the operation, but forgets about the "msdu" phase.
(For TKIP, these two phases require, respectively, 4 and 8 bytes of
tailroom, per the "ieee80211_crypt_tkip" structure at the bottom of
net/ieee80211/ieee80211_crypt_tkip.c.)
Signed-off-by: NBrandon Craig Rhodes <brandon@rhodesmill.org>
Signed-off-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add ADLINK 345 CF card into hostap_cs

product info: "ADLINK 345 CF"
 manfid 0xd601, 0x0005
Signed-off-by: NMarcin Juszkiewicz <openembedded@hrw.one.pl>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

After 13 years of use, it looks like my email address is finally going
to disappear. While this is likely to drop the amount of incoming spam
greatly ;-), it may also affect more appropriate messages, so let's
update my email address in various places. In addition, Host AP mailing
list is subscribers-only and linux-wireless can also be used for
discussing issues related to this driver which is now shown in
MAINTAINERS.
Signed-off-by: NJouni Malinen <j@w1.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

It looks like some of the PC Card manfid/product strings were lost
when Host AP driver was converted to use PCMCIA_DEVICE_* helpers. This
patch adds back D-Link DWL-650 Rev. P1 using the same product ID
string match as the pcmcia-cs/cardmgr configuration used before.
Signed-off-by: NJouni Malinen <jkmaline@cc.hut.fi>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

The original macros result in gcc 4.2 warning about "cast from pointer
to integer of different size" on 64-bit systems.

Use of offsetof() on fields in substructures is widespread throughout
the kernel code and should work whether offsetof() is defined using
__compiler_offsetof() or a cast.
Signed-off-by: NPavel Roskin <proski@gnu.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

This patch refactors the wireless Kconfig all over and already
introduces net/wireless/Kconfig with just the WEXT bit for now,
the cfg80211 patch will add to that as well.
Signed-off-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

Now to convert the last one, skb->data, that will allow many simplifications
and removal of some of the offset helpers.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)

Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>