netfilter: nf_conntrack: fix count leak in error path of __nf_conntrack_alloc
We have to decrement the conntrack counter if we fail to access the
zone extension.
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
netfilter: xt_CT: fix missing put timeout object in error path
The error path misses putting the timeout object. This patch adds
new function xt_ct_tg_timeout_put() to put the timeout object.
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
netfilter: xt_CT: allocation has to be GFP_ATOMIC under rcu_read_lock section
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
NAPI is disabled during suspend and needs to be enabled on resume. Without
this the driver locks up during resume in rtl_reset_work() trying to disable
NAPI again.
Signed-off-by: Artem Savkov <artem.savkov@gmail.com> Acked-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 621b4d6 updated the bnx2x driver to a new FW version, but lacked
a commit to a header file with changes to the firmware's interface.
The missing interface change causes iscsi and fcoe to misbehave with the
updated firmware.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> CC: Michael Chan <mchan@broadcom.com> CC: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Gerecke [Tue, 3 Apr 2012 22:50:40 +0000 (15:50 -0700)]
Input: wacom - add Intuos5 multitouch sensor support
Intuos5 tablets with PTH-* model numbers include a multitouch sensor
which use the same touch reports as the 3rd-generation Bamboo. No
useful information is in the HID descriptor for the touch interface
so hardcoded values are used during setup.
Signed-off-by: Jason Gerecke <killertofu@gmail.com> Reviewed-by: Chris Bagwell <chris@cnpbagwell.com> Reviewed-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Jason Gerecke [Tue, 3 Apr 2012 22:50:37 +0000 (15:50 -0700)]
Input: wacom - add Intuos5 Touch Ring LED support
The Touch Ring LEDs on Intuos5 tablets use a different report
format which supports only 4 levels of brightness. We remap
the 7-bit value obtained from sysfs to an appropriate value
for the tablet. Control of the crop mark LEDs (new to the I5)
is left for a later patch.
Jason Gerecke [Tue, 3 Apr 2012 22:48:35 +0000 (15:48 -0700)]
Input: wacom - add Intuos5 Touch Ring/ExpressKey support
Intuos5 uses a new report type for Touch Ring and ExpressKey data.
Note that data from the capacitive sensors present on the ExpressKeys
will be ignored until a proper way is found to expose it.
Signed-off-by: Jason Gerecke <killertofu@gmail.com> Reviewed-by: Chris Bagwell <chris@cnpbagwell.com> Reviewed-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Akinobu Mita [Mon, 2 Apr 2012 22:47:16 +0000 (22:47 +0000)]
ppp: use for_each_set_bit_from
Use for_each_set_bit_from to iterate over all the set bit in a memory
region.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Dmitry Kozlov <xeb@mail.ru> Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
phy:icplus:fix Auto Power Saving in ip101a_config_init.
This patch fixes Auto Power Saving configuration in ip101a_config_init
which was broken as there is no phy register write followed after
setting IP101A_APS_ON flag.
This patch also fixes the return value of ip101a_config_init.
Without this patch ip101a_config_init returns 2 which is not an error
accroding to IS_ERR and the mac driver will continue accessing 2 as
valid pointer to phy_dev resulting in memory fault.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
In rare circumstances, a descriptor writeback flush may not work if it
arrives on a specific clock cycle as a writeback request is going out.
Signed-off-by: Matthew Vick <matthew.vick@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Bruce Allan [Wed, 21 Mar 2012 00:39:12 +0000 (00:39 +0000)]
e1000e: prevent oops when adapter is being closed and reset simultaneously
When the adapter is closed while it is simultaneously going through a
reset, it can cause a null-pointer dereference when the two different code
paths simultaneously cleanup up the Tx/Rx resources.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Multanen, Eric W [Wed, 28 Mar 2012 07:49:09 +0000 (07:49 +0000)]
ixgbe: driver fix for link flap
Fix up code so that changes in DCB settings
are detected only when ixgbe_dcbnl_set_all is called.
Previously, a series of 'change' commands followed by
a call to ixgbe_dcbnl_set_all() would always be handled
as a HW change - even if the net change was zero.
This patch checks for this case of no actual change and
skips going through the HW set process.
Without this fix, the link could reset and result in
a link flap.
The core change in this patch is to check for changes
in the ixgbe_copy_dcb_cfg() routine - and return
a bitmask of detected changes. The other
places where changes were detected previously can be removed.
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Simon Haggett [Tue, 3 Apr 2012 15:04:15 +0000 (16:04 +0100)]
HID: usbhid: Check HID report descriptor contents after device reset
When a USB device reset occurs, usbcore will refetch the device and configuration
descriptors and compare them with those retrieved before the reset to ensure
that they have not changed. For USB HID devices, this implicitly includes the
HID class descriptor (as this is fetched with the configuration descriptor).
However, the HID report descriptor is not checked again.
Whilst a change in the size of the HID report descriptor will be detected (as
this is held in the class descriptor), content changes to the report descriptor
which do not result in a change in its size will be missed. If a firmware update
were applied to a USB HID device which resulted in such a change to the report
descriptor after device reset, then this would not be picked up by usbhid.
This patch fixes this issue by allowing usbhid to check the contents of the
report descriptor after the device reset, and trigger a rebind of the device
if there is a mismatch.
Jan Seiffert [Fri, 30 Mar 2012 05:24:05 +0000 (05:24 +0000)]
bpf jit: Let the x86 jit handle negative offsets
Now the helper function from filter.c for negative offsets is exported,
it can be used it in the jit to handle negative offsets.
First modify the asm load helper functions to handle:
- know positive offsets
- know negative offsets
- any offset
then the compiler can be modified to explicitly use these helper
when appropriate.
This fixes the case of a negative X register and allows to lift
the restriction that bpf programs with negative offsets can't
be jited.
Signed-of-by: Jan Seiffert <kaffeemonster@googlemail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jan Seiffert [Fri, 30 Mar 2012 05:08:19 +0000 (05:08 +0000)]
bpf jit: Make the filter.c::__load_pointer helper non-static for the jits
The function is renamed to make it a little more clear what it does.
It is not added to any .h because it is not for general consumption, only for
bpf internal use (and so by the jits).
Signed-of-by: Jan Seiffert <kaffeemonster@googlemail.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Haiyang Zhang [Tue, 27 Mar 2012 13:20:45 +0000 (13:20 +0000)]
net/hyperv: Add flow control based on hi/low watermark
In the existing code, we only stop queue when the ringbuffer is full,
so the current packet has to be dropped or retried from upper layer.
This patch stops the tx queue when available ringbuffer is below
the low watermark. So the ringbuffer still has small amount of space
available for the current packet. This will reduce the overhead of
retries on sending.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The explanation of ip_local_port_range in
Documentation/networking/ip-sysctl.txt contains several factual
errors:
- The default value of ip_local_port_range does not depend on the
amount of memory available in the system.
- tcp_tw_recycle is not enabled by default.
- 1024-4999 is not the default value.
- Etc.
Clean up the mess.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 3 Apr 2012 09:37:01 +0000 (09:37 +0000)]
tcp: allow splice() to build full TSO packets
vmsplice()/splice(pipe, socket) call do_tcp_sendpages() one page at a
time, adding at most 4096 bytes to an skb. (assuming PAGE_SIZE=4096)
The call to tcp_push() at the end of do_tcp_sendpages() forces an
immediate xmit when pipe is not already filled, and tso_fragment() try
to split these skb to MSS multiples.
4096 bytes are usually split in a skb with 2 MSS, and a remaining
sub-mss skb (assuming MTU=1500)
This makes slow start suboptimal because many small frames are sent to
qdisc/driver layers instead of big ones (constrained by cwnd and packets
in flight of course)
In fact, applications using sendmsg() (adding an additional memory copy)
instead of vmsplice()/splice()/sendfile() are a bit faster because of
this anomaly, especially if serving small files in environments with
large initial [c]wnd.
Call tcp_push() only if MSG_MORE is not set in the flags parameter.
This bit is automatically provided by splice() internals but for the
last page, or on all pages if user specified SPLICE_F_MORE splice()
flag.
In some workloads, this can reduce number of sent logical packets by an
order of magnitude, making zero-copy TCP actually faster than
one-copy :)
Reported-by: Tom Herbert <therbert@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Cc: Neal Cardwell <ncardwell@google.com> Cc: Tom Herbert <therbert@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: H.K. Jerry Chu <hkchu@google.com> Cc: Maciej Żenczykowski <maze@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: Eric Dumazet <eric.dumazet@gmail>com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Woodhouse [Mon, 26 Mar 2012 00:03:42 +0000 (00:03 +0000)]
ppp: Don't stop and restart queue on every TX packet
For every transmitted packet, ppp_start_xmit() will stop the netdev
queue and then, if appropriate, restart it. This causes the TX softirq
to run, entirely gratuitously.
This is "only" a waste of CPU time in the normal case, but it's actively
harmful when the PPP device is a TEQL slave — the wakeup will cause the
offending device to receive the next TX packet from the TEQL queue, when
it *should* have gone to the next slave in the list. We end up seeing
large bursts of packets on just *one* slave device, rather than using
the full available bandwidth over all slaves.
This patch fixes the problem by *not* unconditionally stopping the queue
in ppp_start_xmit(). It adds a return value from ppp_xmit_process()
which indicates whether the queue should be stopped or not.
It *doesn't* remove the call to netif_wake_queue() from
ppp_xmit_process(), because other code paths (especially from
ppp_output_wakeup()) need it there and it's messy to push it out to the
other callers to do it based on the return value. So we leave it in
place — it's a no-op in the case where the queue wasn't stopped, so it's
harmless in the TX path.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 2 Apr 2012 22:33:02 +0000 (22:33 +0000)]
net: fix /proc/net/dev regression
Commit f04565ddf52 (dev: use name hash for dev_seq_ops) added a second
regression, as some devices are missing from /proc/net/dev if many
devices are defined.
When seq_file buffer is filled, the last ->next/show() method is
canceled (pos value is reverted to value prior ->next() call)
Problem is after above commit, we dont restart the lookup at right
position in ->start() method.
Fix this by removing the internal 'pos' pointer added in commit, since
we need to use the 'loff_t *pos' provided by seq_file layer.
This also reverts commit 5cac98dd0 (net: Fix corruption
in /proc/*/net/dev_mcast), since its not needed anymore.
Reported-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Mihai Maruseac <mmaruseac@ixiacom.com> Tested-by: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Lino Sanfilippo [Fri, 30 Mar 2012 07:36:16 +0000 (07:36 +0000)]
sky2: fix missing register reset on error path in sky2_test_msi()
In sky2_test_msi() the temporarily set SW IRQ in B0 register is not reset in case
that request_irq() fails.
With this patch we only set the interrupt mask if request_irq() was successful.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Chris Ball [Tue, 3 Apr 2012 20:48:32 +0000 (16:48 -0400)]
Revert "mmc: sdhci-pci: Add MSI support"
This reverts commit e6039832bed9a9b967796d7021f17f25b625b616.
There are reports of MSI breaking SDHCI on multiple chipsets (JMicron
and O2Micro, at least), so this should be reverted until we come up
with a whitelist or something.
Eric Dumazet [Tue, 3 Apr 2012 05:28:28 +0000 (05:28 +0000)]
af_unix: reduce high order page allocations
unix_dgram_sendmsg() currently builds linear skbs, and this can stress
page allocator with high order page allocations. When memory gets
fragmented, this can eventually fail.
We can try to use order-2 allocations for skb head (SKB_MAX_ALLOC) plus
up to 16 page fragments to lower pressure on buddy allocator.
This patch has no effect on messages of less than 16064 bytes.
(on 64bit arches with PAGE_SIZE=4096)
For bigger messages (from 16065 to 81600 bytes), this patch brings
reliability at the expense of performance penalty because of extra pages
allocations.
Magnus Damm [Tue, 3 Apr 2012 18:30:28 +0000 (11:30 -0700)]
Input: st1232 - add device tree support
This patch enables DT support for the st1232 driver
which is primarily used on the sh7372 Mackerel board.
[dtor@mail.ru: chnaged to use CONFIG_OF and of_match_ptr] Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
projects / karo-tx-linux.git / log