Commit Graph

89131 Commits

Author SHA1 Message Date
Breno Leitao
5447080cfa s2io: fixing DBG_PRINT() macro
Patch 9e39f7c5b3 changed the
DBG_PRINT() macro and the if clause was wrongly changed. It means
that currently all the DBG_PRINT are being printed, flooding the
kernel log buffer with things like:

s2io: eth6: Next block at: c0000000b9c90000
s2io: eth6: In Neterion Tx routine

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Acked-by: Sreenivasa Honnur <Sreenivasa.Honnur@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-26 15:37:30 -07:00
David S. Miller
a9ad99a612 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-07-26 13:26:09 -07:00
Ming Lei
f792af250d ath9k: fix dma direction for map/unmap in ath_rx_tasklet
For edma, we should use DMA_BIDIRECTIONAL, or else use
DMA_FROM_DEVICE.

This is found to address "BUG at arch/x86/mm/physaddr.c:5"
as described here:

http://lkml.org/lkml/2010/7/14/21

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-26 14:41:04 -04:00
David S. Miller
76ac21f5ef Merge branch 'wimax-2.6.35.y' of git://git.kernel.org/pub/scm/linux/kernel/git/inaky/wimax 2010-07-24 20:51:45 -07:00
Michael S. Tsirkin
ef3db4a595 tun: avoid BUG, dump packet on GSO errors
There are still some LRO cards that cause GSO errors in tun,
and BUG on this is an unfriendly way to tell the admin
to disable LRO.

Further, experience shows we might have more GSO bugs lurking.
See https://bugzilla.kernel.org/show_bug.cgi?id=16413
as a recent example.
dumping a packet will make it easier to figure it out.

Replace BUG with warning+dump+drop the packet to make
GSO errors in tun less critical and easier to debug.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Alex Unigovsky <unik@compot.ru>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-24 20:47:20 -07:00
Greg Edwards
d8190dff01 bonding: set device in RLB ARP packet handler
After:

commit 6146b1a4da
Author: Jay Vosburgh <fubar@us.ibm.com>
Date:   Tue Nov 4 17:51:15 2008 -0800

    bonding: Fix ALB mode to balance traffic on VLANs

the dev field in the RLB ARP packet handler was set to NULL to wildcard
and accommodate balancing VLANs on top of bonds.

This has the side-effect of the packet handler being called against
other, non RLB-enabled bonds, and a kernel oops results when it tries to
dereference rx_hashtbl in rlb_update_entry_from_arp(), which won't be
set for those bonds, e.g. active-backup.

With the __netif_receive_skb() changes from:

commit 1f3c8804ac
Author: Andy Gospodarek <andy@greyhouse.net>
Date:   Mon Dec 14 10:48:58 2009 +0000

    bonding: allow arp_ip_targets on separate vlans to use arp validation

frames received on VLANs correctly make their way to the bond's handler,
so we no longer need to wildcard the device.

The oops can be reproduced by:

modprobe bonding

echo active-backup > /sys/class/net/bond0/bonding/mode
echo 100 > /sys/class/net/bond0/bonding/miimon
ifconfig bond0 xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx
echo +eth0 > /sys/class/net/bond0/bonding/slaves
echo +eth1 > /sys/class/net/bond0/bonding/slaves

echo +bond1 > /sys/class/net/bonding_masters
echo balance-alb > /sys/class/net/bond1/bonding/mode
echo 100 > /sys/class/net/bond1/bonding/miimon
ifconfig bond1 xxx.xxx.xxx.xxx netmask xxx.xxx.xxx.xxx
echo +eth2 > /sys/class/net/bond1/bonding/slaves
echo +eth3 > /sys/class/net/bond1/bonding/slaves

Pass some traffic on bond0.  Boom.

[ Tested, behaves as advertised.  I do not believe a test of the bonding
mode is necessary, as there is no race between the packet handler and
the bonding mode changing (the mode can only change when the device is
closed).  Also updated the log message to include the reproduction and
full commit ids.  -J ]

Signed-off-by: Greg Edwards <greg.edwards@hp.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Acked-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-24 20:37:48 -07:00
Alexey Shvetsov
41a8730c23 wimax/i2400m: Add PID & VID for Intel WiMAX 6250
This version of intel wimax device was found in my IBM ThinkPad x201

Signed-off-by: Alexey Shvetsov <alexxy@gentoo.org>
2010-07-22 14:50:34 -07:00
Herbert Xu
8a35747a5d macvtap: Limit packet queue length
Mark Wagner reported OOM symptoms when sending UDP traffic over
a macvtap link to a kvm receiver.

This appears to be caused by the fact that macvtap packet queues
are unlimited in length.  This means that if the receiver can't
keep up with the rate of flow, then we will hit OOM. Of course
it gets worse if the OOM killer then decides to kill the receiver.

This patch imposes a cap on the packet queue length, in the same
way as the tuntap driver, using the device TX queue length.

Please note that macvtap currently has no way of giving congestion
notification, that means the software device TX queue cannot be
used and packets will always be dropped once the macvtap driver
queue fills up.

This shouldn't be a great problem for the scenario where macvtap
is used to feed a kvm receiver, as the traffic is most likely
external in origin so congestion notification can't be applied
anyway.

Of course, if anybody decides to complain about guest-to-guest
UDP packet loss down the track, then we may have to revisit this.

Incidentally, this patch also fixes a real memory leak when
macvtap_get_queue fails.

Chris Wright noticed that for this patch to work, we need a
non-zero TX queue length.  This patch includes his work to change
the default macvtap TX queue length to 500.

Reported-by: Mark Wagner <mwagner@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-22 13:08:56 -07:00
Andy Gospodarek
bded64a7ff ixgbe/igb: catch invalid VF settings
Some ixgbe cards put an invalid VF device ID in the PCIe SR-IOV
capability.  The ixgbe driver is only valid for PFs or non SR-IOV
hardware.  It seems that the same problem could occur on igb hardware as
well, so if we discover we are trying to initialize a VF in ixbge_probe
or igb_probe, print an error and exit.

Based on a patch for ixgbe from Chris Wright <chrisw@sous-sol.org>.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Cc: Chris Wright <chrisw@sous-sol.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 13:48:55 -07:00
Vladislav Zolotarov
0577589cc1 bnx2x: Advance a module version
Advance a module version to 1.52.53-2.

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 11:11:56 -07:00
Vladislav Zolotarov
d0996faeec bnx2x: Protect statistics ramrod and sequence number
Bug fix: Protect statistics ramrod sending code and a statistics counter update
with a spinlock. Otherwise there was a race condition that would allow sending
a statistics ramrods with the same sequence number or with sequence numbers not
in a natural order, which would cause a FW assert.

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 11:11:55 -07:00
Vladislav Zolotarov
a13773a53f bnx2x: Protect a SM state change
Bug fix: Protect the statistics state machine state update with a
spinlock.  Otherwise there was a race condition that would cause the
statistics to stay enabled despite the fact that they were disabled in
the LINK_DOWN event handler.

Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-21 11:11:54 -07:00
David S. Miller
b508998f66 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-07-19 12:38:51 -07:00
Robert Jennings
ee2e6114de ibmveth: lost IRQ while closing/opening device leads to service loss
The order of freeing the IRQ and freeing the device in firmware
in ibmveth_close can cause the adapter to become unusable after a
subsequent ibmveth_open.  Only a reboot of the OS will make the
network device usable again. This is seen when cycling the adapter
up and down while there is network activity.

There is a window where an IRQ will be left unserviced (H_EOI will not
be called).  The solution is to make a VIO_IRQ_DISABLE h_call, free the
device with firmware, and then call free_irq.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-16 13:03:23 -07:00
David S. Miller
0f6142fa96 Merge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost 2010-07-16 12:41:44 -07:00
Stephen Boyd
9acd56d3f2 rt2x00: Fix lockdep warning in rt2x00lib_probe_dev()
The rt2x00dev->intf_work workqueue is never initialized when a driver is
probed for a non-existent device (in this case rt2500usb). On such a
path we call rt2x00lib_remove_dev() to free any resources initialized
during the probe before we use INIT_WORK to initialize the workqueue.
This causes lockdep to get confused since the lock used in the workqueue
hasn't been initialized yet but is now being acquired during
cancel_work_sync() called by rt2x00lib_remove_dev().

Fix this by initializing the workqueue first before we attempt to probe
the device. This should make lockdep happy and avoid breaking any
assumptions about how the library cleans up after a probe fails.

phy0 -> rt2x00lib_probe_dev: Error - Failed to allocate device.
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 2027, comm: modprobe Not tainted 2.6.35-rc5+ #60
Call Trace:
 [<ffffffff8105fe59>] register_lock_class+0x152/0x31f
 [<ffffffff81344a00>] ? usb_control_msg+0xd5/0x111
 [<ffffffff81061bde>] __lock_acquire+0xce/0xcf4
 [<ffffffff8105f6fd>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff81492aef>] ?  _raw_spin_unlock_irqrestore+0x33/0x41
 [<ffffffff810628d5>] lock_acquire+0xd1/0xf7
 [<ffffffff8104f037>] ? __cancel_work_timer+0x99/0x17e
 [<ffffffff8104f06e>] __cancel_work_timer+0xd0/0x17e
 [<ffffffff8104f037>] ? __cancel_work_timer+0x99/0x17e
 [<ffffffff8104f136>] cancel_work_sync+0xb/0xd
 [<ffffffffa0096675>] rt2x00lib_remove_dev+0x25/0xb0 [rt2x00lib]
 [<ffffffffa0096bf7>] rt2x00lib_probe_dev+0x380/0x3ed [rt2x00lib]
 [<ffffffff811d78a7>] ? __raw_spin_lock_init+0x31/0x52
 [<ffffffffa00bbd2c>] ? T.676+0xe/0x10 [rt2x00usb]
 [<ffffffffa00bbe4f>] rt2x00usb_probe+0x121/0x15e [rt2x00usb]
 [<ffffffff813468bd>] usb_probe_interface+0x151/0x19e
 [<ffffffff812ea08e>] driver_probe_device+0xa7/0x136
 [<ffffffff812ea167>] __driver_attach+0x4a/0x66
 [<ffffffff812ea11d>] ? __driver_attach+0x0/0x66
 [<ffffffff812e96ca>] bus_for_each_dev+0x54/0x89
 [<ffffffff812e9efd>] driver_attach+0x19/0x1b
 [<ffffffff812e9b64>] bus_add_driver+0xb4/0x204
 [<ffffffff812ea41b>] driver_register+0x98/0x109
 [<ffffffff813465dd>] usb_register_driver+0xb2/0x173
 [<ffffffffa00ca000>] ? rt2500usb_init+0x0/0x20 [rt2500usb]
 [<ffffffffa00ca01e>] rt2500usb_init+0x1e/0x20 [rt2500usb]
 [<ffffffff81000203>] do_one_initcall+0x6d/0x17a
 [<ffffffff8106cae8>] sys_init_module+0x9c/0x1e0
 [<ffffffff8100296b>] system_call_fastpath+0x16/0x1b

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-16 13:57:59 -04:00
Michael S. Tsirkin
95c0ec6a97 vhost: avoid pr_err on condition guest can trigger
Guest can trigger packet truncation by posting
a very short buffer and disabling buffer merging.
Convert pr_err to pr_debug to avoid log from filling
up when this happens.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-16 12:18:17 +03:00
Michael S. Tsirkin
1680e9063e vhost-net: avoid flush under lock
We flush under vq mutex when changing backends.
This creates a deadlock as workqueue being flushed
needs this lock as well.

https://bugzilla.redhat.com/show_bug.cgi?id=612421

Drop the vq mutex before flush: we have the device mutex
which is sufficient to prevent another ioctl from touching
the vq.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-15 15:26:12 +03:00
John W. Linville
0f4da2d77e hostap_pci: set dev->base_addr during probe
"hostap: Protect against initialization interrupt" (which reinstated
"wireless: hostap, fix oops due to early probing interrupt")
reintroduced Bug 16111.  This is because hostap_pci wasn't setting
dev->base_addr, which is now checked in prism2_interrupt.  As a result,
initialization was failing for PCI-based hostap devices.  This corrects
that oversight.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-14 13:49:46 -04:00
Ken Kawasaki
ab83a38958 axnet_cs: use spin_lock_irqsave in ax_interrupt
Use spin_lock_irqsave instead of spin_lock in ax_interrupt because
the interrupt handler can also be invoked from ei_watchdog.

Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-12 20:13:02 -07:00
David S. Miller
c4363d6acd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-07-12 15:17:29 -07:00
Francois Romieu
17c9929721 r8169: incorrect identifier for a 8168dp
Merge error.

See CFG_METHOD_8 (0x3c800000 + 0x00300000) since version 8.002.00
of Realtek's driver.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-11 17:10:09 -07:00
Ralf Baechle
33b665eeeb NET: SB1250: Initialize .owner
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 drivers/net/sb1250-mac.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-07 15:00:49 -07:00
Wu Fengguang
7074b16cc6 vxge: show startup message with KERN_INFO
The original KERN_CRIT will mess up terminals.

CC: Sreenivasa Honnur <Sreenivasa.Honnur@neterion.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-07 14:52:24 -07:00
Denis Kirjanov
dfe1e8eddc ll_temac: Fix missing iounmaps
Fix missing iounmaps.

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-07 14:48:00 -07:00
Rajkumar Manoharan
f8036965cc ath9k_htc: fix memory leak in ath9k_hif_usb_alloc_urbs
Failure cases within ath9k_hif_usb_alloc_urbs are failed
to release allocated memory.

Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2010-07-07 15:39:07 -04:00
Kulikov Vasiliy
3390712a47 net/ne: fix memory leak in ne_drv_probe()
net_device allocated with alloc_eip_netdev() must be freed.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-05 20:08:05 -07:00
David S. Miller
8bd39456bd Merge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost 2010-07-02 22:29:22 -07:00
Rusty Russell
58eba97d07 virtio_net: fix oom handling on tx
virtio net will never try to overflow the TX ring, so the only reason
add_buf may fail is out of memory. Thus, we can not stop the
device until some request completes - there's no guarantee anything
at all is outstanding.

Make the error message clearer as well: error here does not
indicate queue full.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (...and avoid TX_BUSY)
Cc: stable@kernel.org  # .34.x (s/virtqueue_/vi->svq->vq_ops->/)
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 22:27:26 -07:00
Michael S. Tsirkin
1788f49548 virtio_net: do not reschedule rx refill forever
We currently fill all of RX ring, then add_buf
returns ENOSPC, which gets mis-detected as an out of
memory condition and causes us to reschedule the work,
and so on forever. Fix this by oom = err == -ENOMEM;

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org # .34.x
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 22:27:25 -07:00
Jon Mason
4a49043223 s2io: resolve statistics issues
This patch resolves a number of issues in the statistics gathering of
the s2io driver.

On Xframe adapters, the received multicast statistics counter includes
pause frames which are not indicated to the driver.  This can cause
issues where the multicast packet count is higher than what has actually
been received, possibly higher than the number of packets received.

The driver software counters are replaced with the adapter hardware
statistics for rx_packets, rx_bytes, and tx_bytes.  It also uses the
overflow registers to determine if the statistics wrapped the 32bit
register (removing the window of having a statistic value less than the
previous call).  rx_length_errors statistic now includes undersized
packets in addition to oversized packets in its counting.  Finally,
rx_crc_errors are now being counted.

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 22:27:25 -07:00
John Fastabend
f0796d5c73 net: decreasing real_num_tx_queues needs to flush qdisc
Reducing real_num_queues needs to flush the qdisc otherwise
skbs with queue_mappings greater then real_num_tx_queues can
be sent to the underlying driver.

The flow for this is,

dev_queue_xmit()
	dev_pick_tx()
		skb_tx_hash()  => hash using real_num_tx_queues
		skb_set_queue_mapping()
	...
	qdisc_enqueue_root() => enqueue skb on txq from hash
...
dev->real_num_tx_queues -= n
...
sch_direct_xmit()
	dev_hard_start_xmit()
		ndo_start_xmit(skb,dev) => skb queue set with old hash

skbs are enqueued on the qdisc with skb->queue_mapping set
0 < queue_mappings < real_num_tx_queues.  When the driver
decreases real_num_tx_queues skb's may be dequeued from the
qdisc with a queue_mapping greater then real_num_tx_queues.

This fixes a case in ixgbe where this was occurring with DCB
and FCoE. Because the driver is using queue_mapping to map
skbs to tx descriptor rings we can potentially map skbs to
rings that no longer exist.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 21:59:07 -07:00
Breno Leitao
7ae80abdba qlge: fix a eeh handler to not add a pending timer
On some ocasions the function qlge_io_resume() tries to add a
pending timer, which causes the system to hit the BUG() on
add_timer() function.

This patch removes the timer during the EEH recovery.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 21:59:06 -07:00
Breno Leitao
72046d84f0 qlge: Replacing add_timer() to mod_timer()
Currently qlge driver calls add_timer() instead of mod_timer().
This patch changes add_timer() to mod_timer(), which seems a better
solution.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 21:59:05 -07:00
Ben Hutchings
0dacca73a3 usbnet: Set parent device early for netdev_printk()
netdev_printk() follows the net_device's parent device pointer, so
we must set that earlier than we previously did.

Reported-by: Luís Picciochi Oliveira <pitxyoki@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 21:49:02 -07:00
Ben Hutchings
7b00ac51ff net: Revert "rndis_host: Poll status channel before control channel"
This reverts commit c17b274dc2.

That change was reported to break rndis_wlan support for the WUSB54GS.

Reported-by: Luís Picciochi Oliveira <pitxyoki@gmail.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-02 21:47:54 -07:00
Reinette Chatre
e4c064728c iwlwifi: remove key information during device restart
When there is a firmware error or the firmware is reloaded for some other
reason we currently clear all station information, including keys
associated with them. A problem is that we do not clear some other
information regarding keys that are not stored in the station structs.

The consequence of this is that when the device is reconfigured after the
firmware reload we can, among other things, run out of key indices.

This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=16232
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2221

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
2010-07-02 10:44:19 -07:00
Cody Rester
c89827e0e9 drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h
Fixed include error, changed to linux/io.h

Signed-off-by: Cody Rester <codyrester@gmail.com>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-01 21:28:14 -07:00
Michael S. Tsirkin
7b3384fc30 vhost: add unlikely annotations to error path
patch 'break out of polling loop on error' caused
a minor performance regression on my machine: recover
that performance by adding a bunch of unlikely annotations
in the error handling.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-07-01 19:25:40 +03:00
Flavio Leitner
42d782ac1b bonding: check if clients MAC addr has changed
When two systems using bonding devices in adaptive load
balancing (ALB) communicates with each other, an endless
ping-pong of ARP replies starts between these two systems.

What happens? In the ALB mode, bonding driver keeps track
of each client connected in a hash table, so it can do the
receive load balancing (RLB). This hash table is updated
when an ARP reply is received, then it scans for the client
entry, updates its MAC address and flag it to be announced
later. Therefore, two seconds later, the alb monitor runs
and send for each updated client entry two ARP replies
updating this specific client. The same process happens on
the receiving system, causing the endless ping-pong of arp
replies.

See more information including the relevant functions below:

   System 1                          System 2
    bond0                             bond0

   ping <system2>
    ARP request  --------->
                           <--------- ARP reply

+->rlb_arp_recv  <---------------------+   <--- loop begins
|  rlb_update_entry_from_arp           |
|  client_info->ntt = 1;               |
|  bond_info->rx_ntt = 1;              |
|                                      |
|         <communication succeed>      |
|                                      |
|  bond_alb_monitor                    |
|  rlb_update_rx_clients               |
|  rlb_update_client                   |
|  arp_create(ARPOP_REPLY)             |
|   send ARP reply -------------->     V
|   send ARP reply -------------->
|                               rlb_arp_recv
|                               rlb_update_entry_from_arp
|                               client_info->ntt = 1;
|                               bond_info->rx_ntt = 1;
|                           < snipped, same as in system 1>
+-------           <-------------- send ARP reply
                   <-------------- send ARP reply

Besides the unneeded networking traffic, this loop breaks
a cluster because a backup system can't take over the IP
address. There is always one system sending an ARP reply
poisoning the network.

This patch fixes the problem adding a check for the MAC
address before updating it. Thus, if the MAC address didn't
change, there is no need to update neither to announce it later.

Signed-off-by: Flavio Leitner <fleitner@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30 13:51:11 -07:00
David Howells
dd1589a431 Bluetooth: Fix abuse of the preincrement operator
Fix abuse of the preincrement operator as detected when building with gcc
4.6.0:

	 CC [M]  drivers/bluetooth/hci_bcsp.o
	drivers/bluetooth/hci_bcsp.c: In function 'bcsp_prepare_pkt':
	drivers/bluetooth/hci_bcsp.c:247:20: warning: operation on 'bcsp->msgq_txseq' may be undefined

Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30 13:10:09 -07:00
Saeed Bishara
9b2c2ff7a1 mv643xx_eth: use sw csum for big packets
Some controllers (KW, Dove) limits the TX IP/layer4 checksum offloading to a max size.

Signed-off-by: Saeed Bishara <saeed@marvell.com>
Acked-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-30 13:01:11 -07:00
David S. Miller
08e554b17b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2010-06-30 12:04:58 -07:00
Guillaume Gaudonville
d3ead2413c ixgbe: skip non IPv4 packets in ATR filter
In driver ixgbe, ixgbe_atr may cause crashes for non-ipv4 packets. Just
add a test to check skb->protocol.  It may crash on short packets due
to ip_hdr() access.

Signed-off-by: Guillaume Gaudonville <guillaume.gaudonville@6wind.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-29 23:12:41 -07:00
John Fastabend
9f756f018a ixgbe: disable tx engine before disabling tx laser
Disabling the tx laser while receiving DMA requests
can hang the device.  After this occurs the device
is in a bad state. The GPIO bit never clears when
PCI master access is disabled and a reboot is required
to get the device in a good state again.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-29 23:12:40 -07:00
Andy Gospodarek
fa37813401 ixgbe: fix panic when shutting down system with WoL enabled
This patch added to 2.6.34:

	commit 5f6c018199
	Author: Jesse Brandeburg <jesse.brandeburg@intel.com>
	Date:   Wed Apr 14 16:04:23 2010 -0700

	    ixgbe: fix bug with vlan strip in promsic mode

among other things added a function called ixgbe_vlan_filter_enable.
This new function wants to access and set some rx_ring parameters, but
adapter->rx_ring has already been freed.  This simply moves the free
until after the access and makes __ixgbe_shutdown look more like
ixgbe_remove.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-29 23:12:39 -07:00
Andy Gospodarek
c22d7ac844 bonding: prevent netpoll over bonded interfaces
Support for netpoll over bonded interfaces was added here:

	commit f6dc31a85c
	Author: WANG Cong <amwang@redhat.com>
	Date:   Thu May 6 00:48:51 2010 -0700

	    bonding: make bonding support netpoll

but it is bad enough that we should probably just disable netpoll over
bonding until some of the locking logic in the bonding driver is changed
or converted completely to RCU.  Simple actions like changing the active
slave in active-backup mode will hang the box if a high enough printk
debugging level is enabled.

Keeping the old code around will be good for anyone that wants to work
on it (and for after the RCU conversion), so I propose this small patch
rather than ripping it all out.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-28 23:54:10 -07:00
Michael S. Tsirkin
d5675bd204 vhost: break out of polling loop on error
When ring parsing fails, we currently handle this
as ring empty condition. This means that we enable
kicks and recheck ring empty: if this not empty,
we re-start polling which of course will fail again.

Instead, let's return a negative error code and stop polling.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-06-27 11:52:25 +03:00
David Woodhouse
e2f5b04563 phylib: Add autoload support for the LXT973 phy.
Commit e13647c1 (phylib: Add support for the LXT973 phy.) added a new ID
but neglected to also add it to the MODULE_DEVICE_TABLE.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-26 22:12:03 -07:00
Jiri Slaby
d41de3c100 ISDN: hysdn, fix potential NULL dereference
Stanse found that lp is dereferenced earlier than checked for being
NULL in hysdn_rx_netpkt. Move the initialization below the test.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-26 22:12:02 -07:00