David S. Miller [Thu, 5 Jan 2012 02:35:43 +0000 (21:35 -0500)]
Merge git://git./linux/kernel/git/davem/net
Linus Torvalds [Wed, 4 Jan 2012 23:55:44 +0000 (15:55 -0800)]
Linux 3.2
Linus Torvalds [Wed, 4 Jan 2012 23:03:49 +0000 (15:03 -0800)]
Merge git://git./linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
fix CAN MAINTAINERS SCM tree type
mwifiex: fix crash during simultaneous scan and connect
b43: fix regression in PIO case
ath9k: Fix kernel panic in AR2427 in AP mode
CAN MAINTAINERS update
net: fsl: fec: fix build for mx23-only kernel
sch_qfq: fix overflow in qfq_update_start()
Revert "Bluetooth: Increase HCI reset timeout in hci_dev_do_close"
Al Viro [Wed, 4 Jan 2012 10:51:03 +0000 (10:51 +0000)]
minixfs: misplaced checks lead to dentry leak
bitmap size sanity checks should be done *before* allocating ->s_root;
there their cleanup on failure would be correct. As it is, we do iput()
on root inode, but leak the root dentry...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Wed, 4 Jan 2012 16:29:20 +0000 (17:29 +0100)]
ptrace: ensure JOBCTL_STOP_SIGMASK is not zero after detach
This is the temporary simple fix for 3.2, we need more changes in this
area.
1. do_signal_stop() assumes that the running untraced thread in the
stopped thread group is not possible. This was our goal but it is
not yet achieved: a stopped-but-resumed tracee can clone the running
thread which can initiate another group-stop.
Remove WARN_ON_ONCE(!current->ptrace).
2. A new thread always starts with ->jobctl = 0. If it is auto-attached
and this group is stopped, __ptrace_unlink() sets JOBCTL_STOP_PENDING
but JOBCTL_STOP_SIGMASK part is zero, this triggers WANR_ON(!signr)
in do_jobctl_trap() if another debugger attaches.
Change __ptrace_unlink() to set the artificial SIGSTOP for report.
Alternatively we could change ptrace_init_task() to copy signr from
current, but this means we can copy it for no reason and hide the
possible similar problems.
Acked-by: Tejun Heo <tj@kernel.org>
Cc: <stable@kernel.org> [3.1]
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Wed, 4 Jan 2012 16:29:02 +0000 (17:29 +0100)]
ptrace: partially fix the do_wait(WEXITED) vs EXIT_DEAD->EXIT_ZOMBIE race
Test-case:
int main(void)
{
int pid, status;
pid = fork();
if (!pid) {
for (;;) {
if (!fork())
return 0;
if (waitpid(-1, &status, 0) < 0) {
printf("ERR!! wait: %m\n");
return 0;
}
}
}
assert(ptrace(PTRACE_ATTACH, pid, 0,0) == 0);
assert(waitpid(-1, NULL, 0) == pid);
assert(ptrace(PTRACE_SETOPTIONS, pid, 0,
PTRACE_O_TRACEFORK) == 0);
do {
ptrace(PTRACE_CONT, pid, 0, 0);
pid = waitpid(-1, NULL, 0);
} while (pid > 0);
return 1;
}
It fails because ->real_parent sees its child in EXIT_DEAD state
while the tracer is going to change the state back to EXIT_ZOMBIE
in wait_task_zombie().
The offending commit is
823b018e which moved the EXIT_DEAD check,
but in fact we should not blame it. The original code was not
correct as well because it didn't take ptrace_reparented() into
account and because we can't really trust ->ptrace.
This patch adds the additional check to close this particular
race but it doesn't solve the whole problem. We simply can't
rely on ->ptrace in this case, it can be cleared if the tracer
is multithreaded by the exiting ->parent.
I think we should kill EXIT_DEAD altogether, we should always
remove the soon-to-be-reaped child from ->children or at least
we should never do the DEAD->ZOMBIE transition. But this is too
complex for 3.2.
Reported-and-tested-by: Denys Vlasenko <vda.linux@googlemail.com>
Tested-by: Lukasz Michalik <lmi@ift.uni.wroc.pl>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: <stable@kernel.org> [3.0+]
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 4 Jan 2012 22:57:55 +0000 (14:57 -0800)]
Merge git://git.samba.org/sfrench/cifs-2.6
* git://git.samba.org/sfrench/cifs-2.6:
[CIFS] default ntlmv2 for cifs mount delayed to 3.3
cifs: fix bad buffer length check in coalesce_t2
Mihai Maruseac [Tue, 3 Jan 2012 23:31:35 +0000 (23:31 +0000)]
ipv6/addrconf: speedup /proc/net/if_inet6 filling
This ensures a linear behaviour when filling /proc/net/if_inet6 thus making
ifconfig run really fast on IPv6 only addresses. In fact, with this patch and
the IPv4 one sent a while ago, ifconfig will run in linear time regardless of
address type.
IPv4 related patch:
f04565ddf52e401880f8ba51de0dff8ba51c99fd
dev: use name hash for dev_seq_ops
...
Some statistics (running ifconfig > /dev/null on a different setup):
iface count / IPv6 no-patch time / IPv6 patched time / IPv4 time
----------------------------------------------------------------
6250 | 0.23 s | 0.13 s | 0.11 s
12500 | 0.62 s | 0.28 s | 0.22 s
25000 | 2.91 s | 0.57 s | 0.46 s
50000 | 11.37 s | 1.21 s | 0.94 s
128000 | 86.78 s | 3.05 s | 2.54 s
Signed-off-by: Mihai Maruseac <mmaruseac@ixiacom.com>
Cc: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:38 +0000 (08:59 +0000)]
r6040: place comments before code
checkpatch.pl complained about the line exceding 80 columns, and the
comment was actually on the same line as the code, fix that.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:37 +0000 (08:59 +0000)]
r6040: use __aligned(size)
instead of __attribute__((__aligned(size)__))
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:36 +0000 (08:59 +0000)]
r6040: use definitions for MAC_SM register read/writes
Bit 1 is the reset bit of the MAC status machine register, define and
use it.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:35 +0000 (08:59 +0000)]
r6040: use MAC_RST bit definition with MCR1 read/writes
MAC_RST bit is already defined, use it instead of 0x1 where applicable.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:34 +0000 (08:59 +0000)]
r6040: define more MCR0 register bits
Define more MCR0-register bits and use them in place of the bits values.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:59:33 +0000 (08:59 +0000)]
r6040: remove unused variables and definitions
Since the conversion to phylib (
3831861b: r6040: implement phylib) some
PHY-related variables and definitions are now useless, remove them.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Wed, 4 Jan 2012 08:50:40 +0000 (08:50 +0000)]
r6040: use an unique MDIO bus name
We should use an unique MDIO bus name which does not clash with anything
else in the system like the Fixed MDIO bus. The bus is now named:
r6040-<card number> which is unique in the system.
Reported-by: Vladimir Kolpakov <vova.kolpakov@gmail.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Wed, 4 Jan 2012 10:49:15 +0000 (10:49 +0000)]
ipv6: Check RA for sllao when configuring optimistic ipv6 address (v2)
Recently Dave noticed that a test we did in ipv6_add_addr to see if we next hop
route for the interface we're adding an addres to was wrong (see commit
7ffbcecbeed91e5874e9a1cfc4c0cbb07dac3069). for one, it never triggers, and two,
it was completely wrong to begin with. This test was meant to cover this
section of RFC 4429:
3.3 Modifications to RFC 2462 Stateless Address Autoconfiguration
* (modifies section 5.5) A host MAY choose to configure a new address
as an Optimistic Address. A host that does not know the SLLAO
of its router SHOULD NOT configure a new address as Optimistic.
A router SHOULD NOT configure an Optimistic Address.
This patch should bring us into proper compliance with the above clause. Since
we only add a SLAAC address after we've received a RA which may or may not
contain a source link layer address option, we can pass a pointer to that option
to addrconf_prefix_rcv (which may be null if the option is not present), and
only set the optimistic flag if the option was found in the RA.
Change notes:
(v2) modified the new parameter to addrconf_prefix_rcv to be a bool rather than
a pointer to make its use more clear as per request from davem.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 4 Jan 2012 06:23:01 +0000 (06:23 +0000)]
net_sched: sfq: always randomize hash perturbation
SFQ q->perturbation is used in sfq_hash() as an input to Jenkins hash.
We currently randomize this 32bit value only if a perturbation timer is
setup.
Its much better to always initialize it to defeat attackers, or else
they can predict very well what kind of packets they have to forge to
hit a particular flow.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 4 Jan 2012 06:22:24 +0000 (06:22 +0000)]
net_sched: sfq: fix mem alloc error recovery
Since commit
817fb15dfd98 (net_sched: sfq: allow divisor to be a
parameter), we can leave perturbation timer armed if a memory allocation
error aborts sfq_init().
Memory containing active struct timer_list is freed and kernel can
crash.
Call sfq_destroy() from sfq_init() to properly dismantle qdisc.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:07:59 +0000 (12:07 +0000)]
ethtool: Remove ethtool_ops::set_rx_ntuple operation
All implementations have been converted to implement set_rxnfc
instead.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:05:58 +0000 (12:05 +0000)]
sfc: Remove now-unused filter function
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:05:47 +0000 (12:05 +0000)]
sfc: Implement ethtool RX NFC rules API instead of n-tuple API
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:05:39 +0000 (12:05 +0000)]
sfc: Add support for retrieving and removing filters by ID
These new functions will support an implementation of the ethtool
RX NFC rules API.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:05:27 +0000 (12:05 +0000)]
sfc: Use consistent types for filter IDs, indices and search depths
Filter IDs are u32 (but never very large) so an ID/error return
value should have type s32.
Filter indices and search depths are never negative, so should
have type unsigned int.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:05:15 +0000 (12:05 +0000)]
sfc: Change filter ID generation to satisfy priority semantics of RX NFC
Also add note that the efx_filter_spec::priority field has nothing
to do with priority between multiple matching filters.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 12:04:51 +0000 (12:04 +0000)]
ethtool: Allow drivers to select RX NFC rule locations
Define special location values for RX NFC that request the driver to
select the actual rule location. This allows for implementation on
devices that use hash-based filter lookup, whereas currently the API is
more suited to devices with TCAM lookup or linear search.
In ethtool_set_rxnfc() and the compat wrapper ethtool_ioctl(), copy
the structure back to user-space after insertion so that the actual
location is returned.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 3 Jan 2012 11:59:30 +0000 (11:59 +0000)]
gianfar: Reject out-of-range RX NFC locations
Currently the driver only uses location values to maintain an ordered
list of filters. Make it reject location values >= MAX_FILER_IDX
passed to the ETHTOOL_SRXCLSRLINS command, consistent with the range
it reports for the ETHTOOL_GRXCLSRLALL command.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Sebastian Pöhn <sebastian.poehn@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John W. Linville [Wed, 4 Jan 2012 16:37:30 +0000 (11:37 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem
Linus Torvalds [Wed, 4 Jan 2012 15:57:22 +0000 (07:57 -0800)]
Revert "rtc: Expire alarms after the time is set."
This reverts commit
93b2ec0128c431148b216b8f7337c1a52131ef03.
The call to "schedule_work()" in rtc_initialize_alarm() happens too
early, and can cause oopses at bootup
Neil Brown explains why we do it:
"If you set an alarm in the future, then shutdown and boot again after
that time, then you will end up with a timer_queue node which is in
the past.
When this happens the queue gets stuck. That entry-in-the-past won't
get removed until and interrupt happens and an interrupt won't happen
because the RTC only triggers an interrupt when the alarm is "now".
So you'll find that e.g. "hwclock" will always tell you that
'select' timed out.
So we force the interrupt work to happen at the start just in case."
and has a patch that convert it to do things in-process rather than with
the worker thread, but right now it's too late to play around with this,
so we just revert the patch that caused problems for now.
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Requested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Requested-by: John Stultz <john.stultz@linaro.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Steve French [Wed, 4 Jan 2012 05:08:24 +0000 (23:08 -0600)]
[CIFS] default ntlmv2 for cifs mount delayed to 3.3
Turned out the ntlmv2 (default security authentication)
upgrade was harder to test than expected, and we ran
out of time to test against Apple and a few other servers
that we wanted to. Delay upgrade of default security
from ntlm to ntlmv2 (on mount) to 3.3. Still works
fine to specify it explicitly via "sec=ntlmv2" so this
should be fine.
Acked-by: Jeff Layton <jlayton@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
Jeff Layton [Sun, 1 Jan 2012 15:34:39 +0000 (10:34 -0500)]
cifs: fix bad buffer length check in coalesce_t2
The current check looks to see if the RFC1002 length is larger than
CIFSMaxBufSize, and fails if it is. The buffer is actually larger than
that by MAX_CIFS_HDR_SIZE.
This bug has been around for a long time, but the fact that we used to
cap the clients MaxBufferSize at the same level as the server tended
to paper over it. Commit
c974befa changed that however and caused this
bug to bite in more cases.
Reported-and-Tested-by: Konstantinos Skarlatos <k.skarlatos@gmail.com>
Tested-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Linus Torvalds [Wed, 4 Jan 2012 01:32:13 +0000 (17:32 -0800)]
Revert "rtc: Disable the alarm in the hardware"
This reverts commit
c0afabd3d553c521e003779c127143ffde55a16f.
It causes failures on Toshiba laptops - instead of disabling the alarm,
it actually seems to enable it on the affected laptops, resulting in
(for example) the laptop powering on automatically five minutes after
shutdown.
There's a patch for it that appears to work for at least some people,
but it's too late to play around with this, so revert for now and try
again in the next merge window.
See for example
http://bugs.debian.org/652869
Reported-and-bisected-by: Andreas Friedrich <afrie@gmx.net> (Toshiba Tecra)
Reported-by: Antonio-M. Corbi Bellot <antonio.corbi@ua.es> (Toshiba Portege R500)
Reported-by: Marco Santos <marco.santos@waynext.com> (Toshiba Portege Z830)
Reported-by: Christophe Vu-Brugier <cvubrugier@yahoo.fr> (Toshiba Portege R830)
Cc: Jonathan Nieder <jrnieder@gmail.com>
Requested-by: John Stultz <john.stultz@linaro.org>
Cc: stable@kernel.org # for the versions that applied this
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Javier Martinez Canillas [Tue, 3 Jan 2012 13:36:19 +0000 (13:36 +0000)]
net/smsc911x: Check if PHY is in operational mode before software reset
SMSC LAN generation 4 chips integrate an IEEE 802.3 ethernet physical layer.
The PHY driver for this integrated chip enable an energy detect power-down mode.
When the PHY is in a power-down mode, it prevents the MAC portion chip to be
software reseted.
That means that if we compile the kernel with the configuration option SMSC_PHY
enabled and try to bring the network interface up without an cable plug-ed the
PHY will be in a low power mode and the software reset will fail returning -EIO
to user-space:
root@igep00x0:~# ifconfig eth0 up
ifconfig: SIOCSIFFLAGS: Input/output error
This patch disable the energy detect power-down mode before trying to software
reset the LAN chip and re-enables after it was reseted successfully.
Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Javier Martinez Canillas [Wed, 4 Jan 2012 01:23:18 +0000 (20:23 -0500)]
net: phy: smsc: Move SMSC PHY constants to <linux/smscphy.h>
SMSC generation 4 LAN chips integrate an IEEE 802.3 ethernet physical layer.
The ethernet driver for this family of devices needs to access the SMSC PHY
registers and bit-fields.
So, this patch moves these constants to a place where it can be used for both
the PHY and LAN drivers.
Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mandeep Singh Baines [Tue, 3 Jan 2012 22:41:13 +0000 (14:41 -0800)]
hung_task: fix false positive during vfork
vfork parent uninterruptibly and unkillably waits for its child to
exec/exit. This wait is of unbounded length. Ignore such waits
in the hung_task detector.
Signed-off-by: Mandeep Singh Baines <msb@chromium.org>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
LKML-Reference: <
1325344394.28904.43.camel@lappy>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Kacur <jkacur@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Tue, 3 Jan 2012 12:14:29 +0000 (13:14 +0100)]
security: Fix security_old_inode_init_security() when CONFIG_SECURITY is not set
Commit
1e39f384bb01 ("evm: fix build problems") makes the stub version
of security_old_inode_init_security() return 0 when CONFIG_SECURITY is
not set.
But that makes callers such as reiserfs_security_init() assume that
security_old_inode_init_security() has set name, value, and len
arguments properly - but security_old_inode_init_security() left them
uninitialized which then results in interesting failures.
Revert security_old_inode_init_security() to the old behavior of
returning EOPNOTSUPP since both callers (reiserfs and ocfs2) handle this
just fine.
[ Also fixed the S_PRIVATE(inode) case of the actual non-stub
security_old_inode_init_security() function to return EOPNOTSUPP
for the same reason, as pointed out by Mimi Zohar.
It got incorrectly changed to match the new function in commit
fb88c2b6cbb1: "evm: fix security/security_old_init_security return
code". - Linus ]
Reported-by: Jorge Bastos <mysql.jorge@decimal.pt>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John W. Linville [Tue, 3 Jan 2012 20:16:34 +0000 (15:16 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
drivers/net/wireless/b43/dma.c
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
Oliver Hartkopp [Tue, 3 Jan 2012 19:57:43 +0000 (14:57 -0500)]
fix CAN MAINTAINERS SCM tree type
As pointed out by Joe Perches the SCM tree type was missing in my patch.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
CC: Urs Thuermann <urs.thuermann@volkswagen.de>
CC: Wolfgang Grandegger <wg@grandegger.com>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
CC: linux-can@vger.kernel.org
Amitkumar Karwar [Tue, 3 Jan 2012 00:18:40 +0000 (16:18 -0800)]
mwifiex: fix crash during simultaneous scan and connect
If 'iw connect' command is fired when driver is already busy in
serving 'iw scan' command, ssid specific scan operation for connect
is skipped. In this case cmd wait queue handler gets called with no
command in queue (i.e. adapter->cmd_queued = NULL).
This patch adds a NULL check in mwifiex_wait_queue_complete()
routine to fix crash observed during simultaneous scan and assoc
operations.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Guennadi Liakhovetski [Mon, 26 Dec 2011 17:28:08 +0000 (18:28 +0100)]
b43: fix regression in PIO case
This patch fixes the regression, introduced by
commit
17030f48e31adde5b043741c91ba143f5f7db0fd
From: Rafał Miłecki <zajec5@gmail.com>
Date: Thu, 11 Aug 2011 17:16:27 +0200
Subject: [PATCH] b43: support new RX header, noticed to be used in 598.314+ fw
in PIO case.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Mohammed Shafi Shajakhan [Mon, 26 Dec 2011 05:12:15 +0000 (10:42 +0530)]
ath9k: Fix kernel panic in AR2427 in AP mode
don't do aggregation related stuff for 'AP mode client power save
handling' if aggregation is not enabled in the driver, otherwise it
will lead to panic because those data structures won't be never
intialized in 'ath_tx_node_init' if aggregation is disabled
EIP is at ath_tx_aggr_wakeup+0x37/0x80 [ath9k]
EAX:
e8c09a20 EBX:
f2a304e8 ECX:
00000001 EDX:
00000000
ESI:
e8c085e0 EDI:
f2a304ac EBP:
f40e1ca4 ESP:
f40e1c8c
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process swapper/1 (pid: 0, ti=
f40e0000 task=
f408e860
task.ti=
f40dc000)
Stack:
0001e966 e8c09a20 00000000 f2a304ac e8c085e0 f2a304ac
f40e1cb0 f8186741
f8186700 f40e1d2c f922988d f2a304ac 00000202 00000001
c0b4ba43 00000000
0000000f e8eb75c0 e8c085e0 205b0001 34383220 f2a304ac
f2a30000 00010020
Call Trace:
[<
f8186741>] ath9k_sta_notify+0x41/0x50 [ath9k]
[<
f8186700>] ? ath9k_get_survey+0x110/0x110 [ath9k]
[<
f922988d>] ieee80211_sta_ps_deliver_wakeup+0x9d/0x350
[mac80211]
[<
c018dc75>] ? __module_address+0x95/0xb0
[<
f92465b3>] ap_sta_ps_end+0x63/0xa0 [mac80211]
[<
f9246746>] ieee80211_rx_h_sta_process+0x156/0x2b0
[mac80211]
[<
f9247d1e>] ieee80211_rx_handlers+0xce/0x510 [mac80211]
[<
c018440b>] ? trace_hardirqs_on+0xb/0x10
[<
c056936e>] ? skb_queue_tail+0x3e/0x50
[<
f9248271>] ieee80211_prepare_and_rx_handle+0x111/0x750
[mac80211]
[<
f9248bf9>] ieee80211_rx+0x349/0xb20 [mac80211]
[<
f9248949>] ? ieee80211_rx+0x99/0xb20 [mac80211]
[<
f818b0b8>] ath_rx_tasklet+0x818/0x1d00 [ath9k]
[<
f8187a75>] ? ath9k_tasklet+0x35/0x1c0 [ath9k]
[<
f8187a75>] ? ath9k_tasklet+0x35/0x1c0 [ath9k]
[<
f8187b33>] ath9k_tasklet+0xf3/0x1c0 [ath9k]
[<
c0151b7e>] tasklet_action+0xbe/0x180
Cc: stable@kernel.org
Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Reported-by: Ashwin Mendonca <ashwinloyal@gmail.com>
Tested-by: Ashwin Mendonca <ashwinloyal@gmail.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
John W. Linville [Tue, 3 Jan 2012 19:26:56 +0000 (14:26 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/padovan/bluetooth
Oliver Hartkopp [Tue, 3 Jan 2012 08:40:28 +0000 (08:40 +0000)]
CAN MAINTAINERS update
Update the CAN MAINTAINERS section:
- point out active maintainers
- pull the CAN driver discussion away from netdev ML
- point to the new CAN web site on gitorious.org
- add CAN development git repository URL to submit patches
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
CC: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
CC: Urs Thuermann <urs.thuermann@volkswagen.de>
CC: Wolfgang Grandegger <wg@grandegger.com>
CC: Marc Kleine-Budde <mkl@pengutronix.de>
CC: linux-can@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Halperin [Tue, 3 Jan 2012 18:53:16 +0000 (13:53 -0500)]
skge: fix warning when CONFIG_PM is defined but not CONFIG_PM_SLEEP
drivers/net/ethernet/marvell/skge.c:4046: warning: ‘skge_suspend’ defined but not used
drivers/net/ethernet/marvell/skge.c:4071: warning: ‘skge_resume’ defined but not used
Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Cc: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sascha Hauer [Tue, 3 Jan 2012 05:27:47 +0000 (05:27 +0000)]
net/davinci: do not use all descriptors for tx packets
The driver uses a shared pool for both rx and tx descriptors.
During open it queues fixed number of 128 descriptors for receive
packets. For each received packet it tries to queue another
descriptor. If this fails the descriptor is lost for rx.
The driver has no limitation on tx descriptors to use, so it
can happen during a nmap / ping -f attack that the driver
allocates all descriptors for tx and looses all rx descriptors.
The driver stops working then.
To fix this limit the number of tx descriptors used to half of
the descriptors available, the rx path uses the other half.
Tested on a custom board using nmap / ping -f to the board from
two different hosts.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wolfram Sang [Tue, 3 Jan 2012 03:46:47 +0000 (03:46 +0000)]
net: fsl: fec: fix build for mx23-only kernel
If one only selects mx23-based boards, compile fails:
drivers/net/ethernet/freescale/fec.c:410:2: error: 'FEC_HASH_TABLE_HIGH' undeclared (first use in this function)
drivers/net/ethernet/freescale/fec.c:411:2: error: 'FEC_HASH_TABLE_LOW' undeclared (first use in this function)
This is because fec.h uses CONFIG_SOC_IMX28 to determine the register
layout of the core which makes sense since the MX23 does not have a fec.
However, Kconfig uses the broader ARCH_MXS symbol and this way even
makes the fec-driver default for MX23. Adapt Kconfig to use the more
precise SOC_IMX28 as well.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 3 Jan 2012 00:00:11 +0000 (00:00 +0000)]
net_sched: qdisc_alloc_handle() can be too slow
When trying to allocate ~32768 qdiscs using autohandle mechanism, we can
fill the space managed by kernel (handles in [8000-FFFF]:0000 range)
But O(N^2) qdisc_alloc_handle() loops 0x10000 times instead of 0x8000
time tc add qdisc add dev eth0 parent 10:7fff pfifo limit 10
RTNETLINK answers: Cannot allocate memory
real 1m54.826s
user 0m0.000s
sys 0m0.004s
INFO: rcu_sched_state detected stall on CPU 0 (t=60000 jiffies)
Half number of loops, and add a cond_resched() call.
We hold rtnl at this point.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Dave Taht <dave.taht@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 2 Jan 2012 11:47:50 +0000 (11:47 +0000)]
sch_qfq: accurate wsum handling
We can underestimate q->wsum in case of "tc class replace ... qfq"
and/or qdisc_create_dflt() error.
wsum is not really used in fast path, only at qfq qdisc/class setup,
to catch user error.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 2 Jan 2012 05:47:57 +0000 (05:47 +0000)]
sch_qfq: fix overflow in qfq_update_start()
grp->slot_shift is between 22 and 41, so using 32bit wide variables is
probably a typo.
This could explain QFQ hangs Dave reported to me, after 2^23 packets ?
(23 = 64 - 41)
Reported-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
CC: Dave Taht <dave.taht@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 1 Jan 2012 18:33:31 +0000 (18:33 +0000)]
sch_sfq: dont put new flow at the end of flows
SFQ enqueue algo puts a new flow _behind_ all pre-existing flows in the
circular list. In fact this is probably an old SFQ implementation bug.
100 Mbits = ~8333 full frames per second, or ~8 frames per ms.
With 50 flows, it means your "new flow" will have to wait 50 packets
being sent before its own packet. Thats the ~6ms.
We certainly can change SFQ to give a priority advantage to new flows,
so that next dequeued packet is taken from a new flow, not an old one.
Reported-by: Dave Taht <dave.taht@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Mon, 2 Jan 2012 04:07:43 +0000 (04:07 +0000)]
mlx4_core: Elaborating limitation on VF port options
Showing which capabilities are not passed to VF
when executing QUERY_PORT
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcel Apfelbaum [Mon, 2 Jan 2012 04:07:39 +0000 (04:07 +0000)]
mlx4_core: fix mtt range deallocation
The mtt range was allocated in mtt units but deallocated
in segments. Among the rest, this caused crash during hotplug removal
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Marcel Apfelbaum <marcela@mellanox.co.il>
Reviewed-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Tested-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Sat, 31 Dec 2011 13:26:46 +0000 (13:26 +0000)]
bonding: fix error handling if slave is busy (v2)
If slave device already has a receive handler registered, then the
error unwind of bonding device enslave function is broken.
The following will leave a pointer to freed memory in the slave
device list, causing a later kernel panic.
# modprobe dummy
# ip li add dummy0-1 link dummy0 type macvlan
# modprobe bonding
# echo +dummy0 >/sys/class/net/bond0/bonding/slaves
The fix is to detach the slave (which removes it from the list)
in the unwind path.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Reviewed-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Fri, 30 Dec 2011 23:44:42 +0000 (23:44 +0000)]
8139cp: properly config rx mode after resuming
Rx mode should be reset after resming, so unconditionally updating rx
mode rather than conditionally updating based on the value we
remembered, otherwise unexpected value may be used by the nic after
resuming.
btw. I find and test this when debugging guest hibernation in qemu, as
I did not have a 8139cp card in hand, this patch is untested in a
physical 8139cp card, plase review it carefully.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Fri, 30 Dec 2011 23:44:33 +0000 (23:44 +0000)]
8139cp/8139too: do not read into reserved registers
delay_eeprom() use long read for Cfg9346 register(offset 0x50) which may read
into the area of reserved register(offset 0x53). Use byte read instead.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Müller [Fri, 30 Dec 2011 17:55:48 +0000 (12:55 -0500)]
drm/radeon/kms/atom: fix possible segfault in pm setup
If we end up with no power states, don't look up
current vddc.
fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=44130
agd5f: fix patch formatting
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Don Skidmore [Sat, 10 Dec 2011 06:49:43 +0000 (06:49 +0000)]
ixgbe: add support for new 82599 device.
This device uses an already existing DevID but since it supports
WoL we need to add the Sub DevID. It's support of WoL is limited
to the first port.
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Emil Tantilov [Fri, 4 Nov 2011 06:43:29 +0000 (06:43 +0000)]
ixgbe: add support for new 82599 device id
Support for new 82599 based quad port adapter.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Emil Tantilov [Fri, 4 Nov 2011 06:43:23 +0000 (06:43 +0000)]
ixgbe: add write flush in ixgbe_clock_out_i2c_byte()
I2C access is timing critical. Always do a write flush after writing
to the I2CCTL register.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Stephen Hemminger [Thu, 22 Dec 2011 16:34:52 +0000 (16:34 +0000)]
ixgbe: fix typo's
Saw typo in one message, so decided to run spell checker.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Emil Tantilov [Sat, 10 Dec 2011 08:21:47 +0000 (08:21 +0000)]
ixgbe: fix incorrect PHY register reads
Fix some register reads that had the opcode and register parameters swapped.
Also use define instead of a magic (0x3) number.
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Carolyn Wyborny [Fri, 2 Dec 2011 00:03:15 +0000 (00:03 +0000)]
igb: Add flow control advertising to ethtool setting.
Added pause flag for bi-directional flow control advertising to ethtool
settings.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Alexander Duyck [Thu, 8 Dec 2011 06:36:28 +0000 (06:36 +0000)]
ixgbevf: Fix register defines to correctly handle complex expressions
This patch is meant to address possible issues with the IXGBEVF register
defines generating incorrect values when given a complex expression for the
register offset.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
David S. Miller [Mon, 2 Jan 2012 23:56:49 +0000 (18:56 -0500)]
Merge git://git./linux/kernel/git/davem/net
John W. Linville [Mon, 2 Jan 2012 21:43:54 +0000 (16:43 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/padovan/bluetooth-next
Linus Torvalds [Mon, 2 Jan 2012 20:34:03 +0000 (12:34 -0800)]
Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6
* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6:
dt/device: Fix auxdata matching to handle entries without a name override
Linus Torvalds [Mon, 2 Jan 2012 03:36:08 +0000 (19:36 -0800)]
Merge git://git./linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netfilter: ctnetlink: fix timeout calculation
ipvs: try also real server with port 0 in backup server
skge: restore rx multicast filter on resume and after config changes
mlx4_en: nullify cq->vector field when closing completion queue
Pablo Neira Ayuso [Fri, 30 Dec 2011 19:32:26 +0000 (20:32 +0100)]
netfilter: nfnetlink_acct: fix nfnl_acct_get operation
The get operation was not sending the message that was built to
user-space. This patch also includes the appropriate handling for
the return value of netlink_unicast().
Moreover, fix error codes on error (for example, for non-existing
entry was uncorrect).
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Linus Torvalds [Sat, 31 Dec 2011 19:55:06 +0000 (11:55 -0800)]
Merge branch 'fix/asoc' of git://git./linux/kernel/git/tiwai/sound
* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: wm8776: add missing break in sample size switch
Mauro Carvalho Chehab [Sat, 31 Dec 2011 13:32:03 +0000 (11:32 -0200)]
gspca: Fix falling back to lower isoc alt settings
The current gspca core code has a regression where it no longer properly
falls back to lower alt settings when there is not enough bandwidth.
This causes many iso based usb-1 cameras to not work when plugged into a
usb2 hub or a sandybridge chipset motherboard!
This patch fixes this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Sat, 31 Dec 2011 19:44:01 +0000 (11:44 -0800)]
futex: Fix uninterruptible loop due to gate_area
It was found (by Sasha) that if you use a futex located in the gate
area we get stuck in an uninterruptible infinite loop, much like the
ZERO_PAGE issue.
While looking at this problem, PeterZ realized you'll get into similar
trouble when hitting any install_special_pages() mapping. And are there
still drivers setting up their own special mmaps without page->mapping,
and without special VM or pte flags to make get_user_pages fail?
In most cases, if page->mapping is NULL, we do not need to retry at all:
Linus points out that even /proc/sys/vm/drop_caches poses no problem,
because it ends up using remove_mapping(), which takes care not to
interfere when the page reference count is raised.
But there is still one case which does need a retry: if memory pressure
called shmem_writepage in between get_user_pages_fast dropping page
table lock and our acquiring page lock, then the page gets switched from
filecache to swapcache (and ->mapping set to NULL) whatever the refcount.
Fault it back in to get the page->mapping needed for key->shared.inode.
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Xi Wang [Fri, 30 Dec 2011 15:40:17 +0000 (10:40 -0500)]
netfilter: ctnetlink: fix timeout calculation
The sanity check (timeout < 0) never works; the dividend is unsigned
and so is the division, which should have been a signed division.
long timeout = (ct->timeout.expires - jiffies) / HZ;
if (timeout < 0)
timeout = 0;
This patch converts the time values to signed for the division.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Julian Anastasov [Fri, 30 Dec 2011 05:19:02 +0000 (14:19 +0900)]
ipvs: try also real server with port 0 in backup server
We should not forget to try for real server with port 0
in the backup server when processing the sync message. We should
do it in all cases because the backup server can use different
forwarding method.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Florian Zumbiehl [Fri, 30 Dec 2011 17:30:09 +0000 (17:30 +0000)]
skge: restore rx multicast filter on resume and after config changes
Restore skge hardware registers for multicast filtering to their
appropriate values after system resume and after hardware restarts
that are done when changing certain settings.
Signed-off-by: Florian Zumbiehl <florz@florz.de>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ajit Khaparde [Fri, 30 Dec 2011 12:15:40 +0000 (12:15 +0000)]
be2net: query link status in be_open()
be2net gets an async link status notification from the FW when it creates
an MCC queue. There are some cases in which this gratuitous notification
is not received from FW. To cover this explicitly query the link status
in be_open().
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ajit Khaparde [Fri, 30 Dec 2011 12:15:30 +0000 (12:15 +0000)]
be2net: fix range check for set_qos for a VF
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ajit Khaparde [Fri, 30 Dec 2011 12:15:12 +0000 (12:15 +0000)]
be2net: fix be_vlan_add/rem_vid
1) fix be_vlan_add/rem_vid to return proper status
2) perform appropriate housekeeping if firmware command succeeds.
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Petrilin [Thu, 29 Dec 2011 05:49:58 +0000 (05:49 +0000)]
mlx4_en: nullify cq->vector field when closing completion queue
Caused loss of connectivity when changing ring size.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 28 Dec 2011 23:12:02 +0000 (23:12 +0000)]
netem: fix classful handling
Commit
10f6dfcfde (Revert "sch_netem: Remove classful functionality")
reintroduced classful functionality to netem, but broke basic netem
behavior :
netem uses an t(ime)fifo queue, and store timestamps in skb->cb[]
If qdisc is changed, time constraints are not respected and other qdisc
can destroy skb->cb[] and block netem at dequeue time.
Fix this by always using internal tfifo, and optionally attach a child
qdisc to netem (or a tree of qdiscs)
Example of use :
DEV=eth3
tc qdisc del dev $DEV root
tc qdisc add dev $DEV root handle 30: est 1sec 8sec netem delay 20ms 10ms
tc qdisc add dev $DEV handle 40:0 parent 30:0 tbf \
burst 20480 limit 20480 mtu 1514 rate 32000bps
qdisc netem 30: root refcnt 18 limit 1000 delay 20.0ms 10.0ms
Sent 190792 bytes 413 pkt (dropped 0, overlimits 0 requeues 0)
rate 18416bit 3pps backlog 0b 0p requeues 0
qdisc tbf 40: parent 30: rate 256000bit burst 20Kb/8 mpu 0b lat 0us
Sent 190792 bytes 413 pkt (dropped 6, overlimits 10 requeues 0)
backlog 0b 5p requeues 0
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Josh Hunt [Wed, 28 Dec 2011 13:23:07 +0000 (13:23 +0000)]
IPv6: Avoid taking write lock for /proc/net/ipv6_route
During some debugging I needed to look into how /proc/net/ipv6_route
operated and in my digging I found its calling fib6_clean_all() which uses
"write_lock_bh(&table->tb6_lock)" before doing the walk of the table. I
found this on 2.6.32, but reading the code I believe the same basic idea
exists currently. Looking at the rtnetlink code they are only calling
"read_lock_bh(&table->tb6_lock);" via fib6_dump_table(). While I realize
reading from proc isn't the recommended way of fetching the ipv6 route
table; taking a write lock seems unnecessary and would probably cause
network performance issues.
To verify this I loaded up the ipv6 route table and then ran iperf in 3
cases:
* doing nothing
* reading ipv6 route table via proc
(while :; do cat /proc/net/ipv6_route > /dev/null; done)
* reading ipv6 route table via rtnetlink
(while :; do ip -6 route show table all > /dev/null; done)
* Load the ipv6 route table up with:
* for ((i = 0;i < 4000;i++)); do ip route add unreachable 2000::$i; done
* iperf commands:
* client: iperf -i 1 -V -c <ipv6 addr>
* server: iperf -V -s
* iperf results - 3 runs each (in Mbits/sec)
* nothing: client: 927,927,927 server: 927,927,927
* proc: client: 179,97,96,113 server: 142,112,133
* iproute: client: 928,927,928 server: 927,927,927
lock_stat shows taking the write lock is causing the slowdown. Using this
info I decided to write a version of fib6_clean_all() which replaces
write_lock_bh(&table->tb6_lock) with read_lock_bh(&table->tb6_lock). With
this new function I see the same results as with my rtnetlink iperf test.
Signed-off-by: Josh Hunt <joshhunt00@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 30 Dec 2011 00:54:39 +0000 (00:54 +0000)]
unix_diag: Fixup RQLEN extension report
While it's not too late fix the recently added RQLEN diag extension
to report rqlen and wqlen in the same way as TCP does.
I.e. for listening sockets the ack backlog length (which is the input
queue length for socket) in rqlen and the max ack backlog length in
wqlen, and what the CINQ/OUTQ ioctls do for established.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 30 Dec 2011 00:54:11 +0000 (00:54 +0000)]
af_unix: Move CINQ/COUTQ code to helpers
Currently tcp diag reports rqlen and wqlen values similar to how
the CINQ/COUTQ iotcls do. To make unix diag report these values
in the same way move the respective code into helpers.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 30 Dec 2011 21:45:34 +0000 (13:45 -0800)]
Merge branch 'fixes' of ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
ARM: 7237/1: PL330: Fix driver freeze
ARM: 7197/1: errata: Remove SMP dependency for erratum 751472
ARM: 7196/1: errata: Remove SMP dependency for erratum 720789
ARM: 7220/1: mmc: mmci: Fixup error handling for dma
ARM: 7214/1: mmc: mmci: Fixup handling of MCI_STARTBITERR
Pavel Emelyanov [Fri, 30 Dec 2011 09:27:43 +0000 (09:27 +0000)]
unix_diag: Add the MEMINFO extension
[ Fix indentation of sock_diag*() calls. -DaveM ]
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 30 Dec 2011 21:43:45 +0000 (13:43 -0800)]
Merge branch 'fixes' of git://git./linux/kernel/git/arm/arm-soc
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: plat-orion: make gpiochip label unique
enable uncompress log on cpuimx35sd
cpuimx35: fix touchscreen support
cpuimx35sd: fix Kconfig
clock-imx35: fix reboot in internal boot mode
dma: MX3_IPU fix depends
imx_v4_v5_defconfig: update default configuration
cpuimx25sd: fix Kconfig
arm/imx: fix cpufreq section mismatch
ARM:imx:fix pwm period value
ARM: OMAP: hwmod data: fix iva and mailbox hwmods for OMAP 3
Linus Torvalds [Fri, 30 Dec 2011 21:42:41 +0000 (13:42 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: sentelic - fix retrieving number of buttons
Input: sentelic - release mutex upon register write failure
Pavel Emelyanov [Fri, 30 Dec 2011 00:53:32 +0000 (00:53 +0000)]
inet_diag: Add the SKMEMINFO extension
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 30 Dec 2011 00:53:13 +0000 (00:53 +0000)]
sock_diag: Introduce the meminfo nla core (v2)
Add a routine that dumps memory-related values of a socket.
It's made as an array to make it possible to add more stuff
here later without breaking compatibility.
Since v1: The SK_MEMINFO_ constants are in userspace
visible part of sock_diag.h, the rest is under __KERNEL__.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 30 Dec 2011 00:52:51 +0000 (00:52 +0000)]
unix_diag: Include unix_diag.h into header-y target
The headers check complains it should include the linux/types.h
withing, thus add this one.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Emelyanov [Fri, 30 Dec 2011 00:52:21 +0000 (00:52 +0000)]
sock_diag: Arrange sock_diag.h such that it is exportable to userspace
Properly toss existing components around the ifdef __KERNEL__
and include the header into the header-y target.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 30 Dec 2011 21:34:22 +0000 (13:34 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: disable use of dcache for readdir etc.
Linus Torvalds [Fri, 30 Dec 2011 21:34:00 +0000 (13:34 -0800)]
Merge branch 'v3.2-samsung-fixes-4' of git://git./linux/kernel/git/kgene/linux-samsung
* 'v3.2-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Remove duplicated SROMC static memory mapping
ARM: SAMSUNG: Fix build error when selecting CPU_FREQ_S3C24XX_DEBUGFS on S3C2440
Linus Torvalds [Fri, 30 Dec 2011 21:24:40 +0000 (13:24 -0800)]
Revert "clockevents: Set noop handler in clockevents_exchange_device()"
This reverts commit
de28f25e8244c7353abed8de0c7792f5f883588c.
It results in resume problems for various people. See for example
http://thread.gmane.org/gmane.linux.kernel/
1233033
http://thread.gmane.org/gmane.linux.kernel/
1233389
http://thread.gmane.org/gmane.linux.kernel/
1233159
http://thread.gmane.org/gmane.linux.kernel/
1227868/focus=
1230877
and the fedora and ubuntu bug reports
https://bugzilla.redhat.com/show_bug.cgi?id=767248
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/904569
which got bisected down to the stable version of this commit.
Reported-by: Jonathan Nieder <jrnieder@gmail.com>
Reported-by: Phil Miller <mille121@illinois.edu>
Reported-by: Philip Langdale <philipl@overt.org>
Reported-by: Tim Gardner <tim.gardner@canonical.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Greg KH <gregkh@suse.de>
Cc: stable@kernel.org # for stable kernels that applied the original
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 30 Dec 2011 20:13:03 +0000 (12:13 -0800)]
Merge git://www.linux-watchdog.org/linux-watchdog
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: iTCO_wdt.c - problems with newer hardware due to SMI clearing (part 2)
watchdog: hpwdt: Changes to handle NX secure bit in 32bit path
watchdog: sp805: Fix section mismatch in ID table.
watchdog: move coh901327 state holders
David S. Miller [Fri, 30 Dec 2011 18:46:54 +0000 (13:46 -0500)]
Merge branch 'tipc-Dec29-2011' of git://git./linux/kernel/git/paulg/linux
David S. Miller [Fri, 30 Dec 2011 18:04:14 +0000 (13:04 -0500)]
Merge git://git./linux/kernel/git/davem/net
Paul Gortmaker [Fri, 30 Dec 2011 02:39:49 +0000 (21:39 -0500)]
tipc: rename struct bearer_name to struct tipc_bearer_names
The addition of the "s" to indicate pluralization is intentional,
since the struct actually contains two name variants.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Paul Gortmaker [Fri, 30 Dec 2011 01:58:42 +0000 (20:58 -0500)]
tipc: rename struct link* to struct tipc_link*
This converts the following:
struct link -> struct tipc_link
struct link_req -> struct tipc_link_req
struct link_name -> struct tipc_link_name
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Paul Gortmaker [Fri, 30 Dec 2011 01:55:27 +0000 (20:55 -0500)]
tipc: rename struct bcbearer* to tipc_bcbearer*
This changes both the struct bcbearer and struct bcbearer_pair to
have the "tipc_" prefix. Runtime behaviour is unchanged.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Paul Gortmaker [Fri, 30 Dec 2011 01:52:18 +0000 (20:52 -0500)]
tipc: rename struct bclink to struct tipc_bclink
Make this rename so that it is consistent with the majority
of the other tipc structs and to assist in removing any
ambiguity with other similar names in other subsystems.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Paul Gortmaker [Fri, 30 Dec 2011 01:49:39 +0000 (20:49 -0500)]
tipc: rename struct subscriber to struct tipc_subscriber
Make this rename so that it is consistent with the majority
of the other tipc structs and to assist in removing any
ambiguity with other similar names in other subsystems.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>