Computing the rank of the first set bit in the hash mask (for using later
in u32_hash_fold()) was done with plain C code. Using ffs() instead makes
the code more readable and improves performance (since ffs() is better
optimized in assembler).

Using the conditional operator on hash mask before applying ntohl() also
saves one ntohl() call if mask is 0.
Signed-off-by: NRadu Rendec <radu.rendec@ines.ro>
Signed-off-by: NJarek Poplawski <jarkao2@o2.pl>
Acked-by: NJamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The intent of the assertion in skb_truesize_check() is to check
for skb->truesize being decremented too much by other code,
resulting in a wraparound below zero.

The type of the right side of the comparison causes the compiler to
promote the left side to an unsigned type, despite the presence of an
explicit type cast.  This defeats the check for negativity.

Ensure both sides of the comparison are a signed type to prevent the
implicit type conversion.
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

While the VLAN device is down, the unicast addresses are not configured
on the underlying device, so we shouldn't attempt to sync them.

Noticed by Dmitry Butskoy <buc@odusz.so-cdu.ru>
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Both check for the family to select an appropriate tunnel list.
Consolidate this check and make the for() loop more readable.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The tunnel64_protocol uses the tunnel4_protocol's err_handler and
thus calls the tunnel4_protocol's handlers.

This is not very good, as in case of (icmp) error the wrong error
handlers will be called (e.g. ipip ones instead of sit) and this
won't be noticed at all, because the error is not reported.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Just like in the af_packet.c, the ipx_sock_nr variable is used
for debugging purposes.

Switch to using existing infrastructure. Thanks to Arnaldo for
pointing this out.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The packet_socks_nr variable is used purely for debugging
the number of sockets.

As Arnaldo pointed out, there's already an infrastructure
for this purposes, so switch to using it.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

From: Joe Perches <joe@perches.com>

Based upon an initial patch and report by Luis R. Rodriguez.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are many places that get the dst entry, increase the
__use counter and set the "lastuse" time stamp.

Make a helper for this.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Both places look like

        if (err == XXX) 
               goto yyy;
   done:

while both yyy targets look like

        err = XXX;
        goto done;

so this is ok to remove the above if-s.

yyy labels are used in other places and are not removed.
Signed-off-by: NPavel Emelyanov <xemul@openvz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In case we run out of mem when fragmenting, the clearing of
FLAG_ONLY_ORIG_SACKED might get missed which then feeds FRTO
with false information. Move clearing outside skb processing
loop so that it will get executed even if the skb loop
terminates prematurely due to out-of-mem.

Besides, now the core of the loop truly deals with a single
skb only, which also enables creation a more self-contained
of tcp_sacktag_one later on.

In addition, small reorganization of if branches was made.
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NIlpo Jrvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Fixes subtle bug like the one with fastpath_cnt_hint happening
due to the way the GSO and hints interact. Because hints are not
reset when just a GSOed skb is partially ACKed, there's no
guarantee that the relevant part of the write queue is going to
be processed in sacktag at all (skbs below snd_una) because
fastpath hint can fast forward the entrypoint.

This was also on the way of future reductions in sacktag's skb
processing. Also future cleanups in sacktag can be made after
this (in 2.6.25).

This may make reordering update in tcp_try_undo_partial
redundant but I'm not too sure so I left it there.
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Reordering detection fails to take account that the reordered
skb may have pcount larger than 1. In such case the lowest of
them had the largest reordering, the old formula used the
highest of them which is pcount - 1 packets less reordered.
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NEric Dumazet <dada1@cosmosbay.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add documentation in Kconfig help about the move of /proc/acpi/battery
to /sys/class/power_supply when selecting ACPI_PROCFS.  This will impact
a lot of users and should be documented.
Signed-off-by: NJerome Pinot <ngc891@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  Add missing "\n" to log message

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: Don't fail device revalidation for bad _GTF methods
  libata: port and host should be stopped before hardware resources are released
  libata: skip 0xff polling for PATA controllers
  libata: pata_platform: Support polling-mode configuration.
  libata: Support PIO polling-only hosts.
  libata sata_qstor conversion to new error handling (EH).
  libata sata_qstor workaround for spurious interrupts
  libata sata_qstor nuke idle state
  nv_hardreset: update dangling reference to bugzilla entry
  ata_piix: add SATELLITE PRO U200 to broken suspend list

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (40 commits)
  r8169: prevent bit sign expansion error in mdio_write
  r8169: revert 7da97ec9 (bis repetita)
  sky2: new pci id's
  ax88796: add superh to kconfig dependencies
  qla3xxx: bugfix: Fix bad logical operation in link state machine.
  qla3xxx: bugfix: Move link state machine into a worker thread
  pasemi_mac: Fix CRC checks
  pasemi_mac: Don't set replace-source-address descriptor bits
  bonding: don't validate address at device open
  bonding: fix rtnl locking merge error
  sky2: netpoll on port 0 only
  b43: Fix kconfig dependencies for rfkill and leds
  b43legacy: Fix sparse warning
  b43: properly request pcmcia IRQ
  b43legacy: fix shared IRQ race condition
  b43: fix shared IRQ race condition
  b43legacy: add me as maintainer and fix URLs
  b43legacy: fix possible buffer overrun in debugfs
  b43: Rewrite and fix rfkill init
  b43: debugfs SHM read buffer overrun fix
  ...

This reverts commit f33bac8d, which was
totally bogus.

The arm/configs/netx_defconfig file already existed - in the right
place. Namely under "arch".
Noticed-by: NPaul Mundt <lethal@linux-sh.org>
Acked-by: NRobert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NRolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>

Oops.

The current code does not like being given an u16 with the highest
bit set as an argument to mdio_write. Let's enforce a correct range of
values for both the register address and value (resp. 5 and 16 bits).

The callers are currently left as-is.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>

RTL_GIGA_MAC_VER_17 breaks as well.
Signed-off-by: NMark Lord <mlord@pobox.com>
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Cc: Edward Hsu <edward_hsu@realtek.com.tw>

Found a couple of more chips in the latest version of the vendor driver.
They are minor variations on existing chips.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

ax88796: add superh to kconfig dependencies

This patch adds sh architecture support to the ax88796 kconfig.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Luckily, this wasn't reported or reproduced. The logical operation for
setting duplex had wrong grouping.
Signed-off-by: NRon Mercer <ron.mercer@qlogic.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The link state machine requires access to some resources that
are shared with the iSCSI function on the chip.  (See iSCSI
driver at drivers/scsi/qla4xxx)  If the interface is being
up/downed at a rapid pace this driver may need to sleep
waiting to get access to the common resources. For this we
are moving the state machine to run as a work thread.
Signed-off-by: NRon Mercer <ron.mercer@qlogic.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Make sure we don't feed packets with bad CRC up the network stack,
and discount the packet length as reported from the MAC for the CRC
field.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Don't use the "replace source address with local MAC address" bits, since
it causes problems on some variations of the hardware due to an erratum.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

The standard validate_addr handler refuses to accept the all zeroes address
as valid.  However, it's common historical practice for the bonding
master to be configured up prior to having any slaves, at which time the
master will have a MAC address of all zeroes.

Resolved by setting the dev->validate_addr to NULL.  The master still can't
end up with an invalid address, as the set_mac_address function tests
for validity.
Signed-off-by: NJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

	Looks like I incorrectly merged one of the rtnl lock changes,
so that one function, bonding_show_active_slave, held rtnl but didn't
release it, and another, bonding_store_active_slave, never held rtnl but
did release it.

	Fixed so the first function doesn't mess with rtnl, and the
second correctly acquires and releases rtnl.

	Bug reported by Moni Shoua <monis@voltaire.com>
Signed-off-by: NJay Vosburgh <fubar@us.ibm.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Netpoll will only work on port 0 because of the restrictive
relationship between NAPI and netpoll.
Signed-off-by: NStephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

Fix dependencies for built-in b43.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix a sparse warning about a nonstatic function.
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

PCMCIA needs an additional step to request the IRQ.

No need to add code to release the IRQ here, as that's done
automatically in pcmcia_disable_device().
Signed-off-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix an IRQ race condition in b43legacy. If we call
b43legacy_wireless_core_stop(), it will set the status of the device to
INITIALIZED and the IRQ handler won't care any longer about IRQs, thus the
kernel will disable the IRQ if it's shared (unless we boot it with the
'irqpoll' option). So we must disable IRQs before changing the device
status.
Signed-off-by: NStefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix an IRQ race condition in b43. If we call b43_stop_wireless_core(), it
will set the status of the device to INITIALIZED and the IRQ handler won't
care any longer about IRQs, thus the kernel will disable the IRQ if it's
shared (unless we boot it with the 'irqpoll' option). So we must disable
IRQs before changing the device status.
Signed-off-by: NStefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

As b43legacy is going to be orphaned, add me as a maintainer. Fix URLs for
the related website and fix my e-mail address in MAINTAINERS file.
Signed-off-by: NStefano Brivio <stefano.brivio@polimi.it>
Cc: Larry Finger <larry.finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix possible buffer overrun.

The patch to b43 by Michael Buesch <mb@bu3sch.de> has been ported to
b43legacy.
Signed-off-by: NStefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>