Commit Graph

232653 Commits

Author SHA1 Message Date
John W. Linville
62362dee83 Merge branch 'wireless-next-2.6' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-2.6 2011-01-26 16:12:47 -05:00
David S. Miller
9b6941d8b1 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 2011-01-26 11:49:49 -08:00
Patrick McHardy
2e0348c449 Merge branch 'connlimit' of git://dev.medozas.de/linux 2011-01-26 16:28:45 +01:00
Jan Engelhardt
ad86e1f27a netfilter: xt_connlimit: pick right dstaddr in NAT scenario
xt_connlimit normally records the "original" tuples in a hashlist
(such as "1.2.3.4 -> 5.6.7.8"), and looks in this list for iph->daddr
when counting.

When the user however uses DNAT in PREROUTING, looking for
iph->daddr -- which is now 192.168.9.10 -- will not match. Thus in
daddr mode, we need to record the reverse direction tuple
("192.168.9.10 -> 1.2.3.4") instead. In the reverse tuple, the dst
addr is on the src side, which is convenient, as count_them still uses
&conn->tuple.src.u3.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2011-01-26 13:01:39 +01:00
Thomas Chou
682a169411 smc91x: add devicetree support
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 22:41:55 -08:00
Matt Carlson
b86fb2cfe8 tg3: Update copyrights and update version to 3.117
This patch updates copyrights and updates the tg3 version to 3.117.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:21 -08:00
Matt Carlson
d7f2ab2043 tg3: Fix eee preprocessor naming
This patch fixes a preprocessor naming bug for one of the EEE registers.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:20 -08:00
Matt Carlson
21a00ab270 tg3: Fix EEE interoperability issue
This patch fixes a problem where EEE will fail to work in certain
environments.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:20 -08:00
Matt Carlson
ab78904608 tg3: Disable EEE during loopback tests
EEE interferes with the hardware's ability to loop a packet back to the
host.  This patch disables the feature for the duration of the test.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:19 -08:00
Matt Carlson
aba49f2421 tg3: Disable MAC loopback test for CPMU devices
On CPMU devices, the MAC loopback test does not test any important paths
the phy loopback test doesn't also test.  The phy loopback test is the
more comprehensive test.  This patch disables the MAC loopback test for
these devices.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:19 -08:00
Matt Carlson
49692ca1e6 tg3: Fix loopback tests
The half-duplex bit in the MAC MODE register will be set during the
loopback test if the external link is in half-duplex mode.  This will
cause the loopback test to fail on newer devices.  This patch turns the
half-duplex bit off for the test.

Also, newer devices fail the internal phy loopback test because the phy
link takes a little while to come up.  This patch adds code to wait for
the link before proceeding with the test.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:18 -08:00
Matt Carlson
f746a3136a tg3: Restrict phy ioctl access
If management firmware is present and the device is down, the firmware
will assume control of the phy.  If a phy access were allowed from the
host, it will collide with firmware phy accesses, resulting in
unpredictable behavior.  This patch fixes the problem by disallowing phy
accesses during the problematic condition.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:17 -08:00
Matt Carlson
0583d52114 tg3: Disable multivec mode for 1 MSIX vector
For single vector MSI-X allocations, we do not want to enable
multivector modes.  This patch makes the necessary corrections.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:17 -08:00
Matt Carlson
bf933c8027 tg3: Use new VLAN code
This patch pivots the tg3 driver to the new VLAN infrastructure.
All references to vlgrp have been removed.  The driver still attempts to
disable VLAN tag stripping if CONFIG_VLAN_8021Q or
CONFIG_VLAN_8021Q_MODULE is not defined.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:16 -08:00
Matt Carlson
4d163b75e9 tg3: Fix 5719 A0 tx completion bug
The 5719 A0 has a bug that manifests itself as if the chipset were
reordering memory writes.  The best known way to solve this problem is
to turn off LSO and jumbo frames.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:16 -08:00
Matt Carlson
b4495ed88b tg3: Revise 5719 internal FIFO overflow solution
Commit cf79003d59, entitled
"tg3: Fix 5719 internal FIFO overflow problem", proposed a way to solve
an internal FIFO overflow problem.  We have since discovered a slightly
better way to solve the problem.  This patch changes the code so that
the problem is contained closer to the problem source.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 19:38:15 -08:00
Linus Lüssing
dd58ddc692 batman-adv: Fix kernel panic when fetching vis data on a vis server
The hash_iterate removal introduced a bug leading to a kernel panic when
fetching the vis data on a vis server. That commit forgot to rename one
variable name, which this commit fixes now.

Reported-by: Russell Senior <russell@personaltelco.net>
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2011-01-25 23:58:33 +01:00
Nicolas de Pesloüan
de221bd5eb bonding: update documentation - alternate configuration.
The bonding documentation used to provide configuration
details and examples for initscripts and sysconfig only.

This patch describe the third possible configuration:
/etc/network/interfaces.

Signed-off-by: Nicolas de Pesloüan <nicolas.2p.debian@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 13:50:56 -08:00
Jerry Chu
44f5324b5d TCP: fix a bug that triggers large number of TCP RST by mistake
This patch fixes a bug that causes TCP RST packets to be generated
on otherwise correctly behaved applications, e.g., no unread data
on close,..., etc. To trigger the bug, at least two conditions must
be met:

1. The FIN flag is set on the last data packet, i.e., it's not on a
separate, FIN only packet.
2. The size of the last data chunk on the receive side matches
exactly with the size of buffer posted by the receiver, and the
receiver closes the socket without any further read attempt.

This bug was first noticed on our netperf based testbed for our IW10
proposal to IETF where a large number of RST packets were observed.
netperf's read side code meets the condition 2 above 100%.

Before the fix, tcp_data_queue() will queue the last skb that meets
condition 1 to sk_receive_queue even though it has fully copied out
(skb_copy_datagram_iovec()) the data. Then if condition 2 is also met,
tcp_recvmsg() often returns all the copied out data successfully
without actually consuming the skb, due to a check
"if ((chunk = len - tp->ucopy.len) != 0) {"
and
"len -= chunk;"
after tcp_prequeue_process() that causes "len" to become 0 and an
early exit from the big while loop.

I don't see any reason not to free the skb whose data have been fully
consumed in tcp_data_queue(), regardless of the FIN flag.  We won't
get there if MSG_PEEK is on. Am I missing some arcane cases related
to urgent data?

Signed-off-by: H.K. Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 13:46:30 -08:00
Bruno Randolf
97d9c3a354 ath5k: ath5k_setup_channels cleanup and whitespace
Remove useless test_bit - it's not going to happen because of the way this
function is called only when that bit is set.

And fix some whitespace.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Nick Kossifidis <mickflemm@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:39:06 -05:00
Senthil Balasubramanian
0a8d7cb0c8 ath9k_hw: read and backup AR_WA register value even before chip reset on.
We need to read and backup AR_WA register value permanently and reading
this after the chip is awakened results in this register being zeroed out.

This seems to fix the ASPM with L1 enabled issue that we have observed.
The laptop becomes very slow and hangs mostly with ASPM L1 enabled without
this fix.

Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:36:07 -05:00
Senthil Balasubramanian
ac45c12dfb ath9k_hw: Fix incorrect macversion and macrev checks
There are few places where we are checking for macversion and revsions
before RTC is powered ON. However we are reading the macversion and
revisions only after RTC is powered ON and so both macversion and
revisions are actully zero and this leads to incorrect srev checks

Incorrect srev checks can cause registers to be configured wrongly and can
cause unexpected behavior. Fixing this seems to address the ASPM issue that
we have observed. The laptop becomes very slow and hangs mostly with ASPM L1
enabled without this fix.

fix this by reading the macversion and revisisons even before we start
using them. There is no reason why should we delay reading this info
until RTC is powered on as this is just a register information.

Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:33:27 -05:00
Reinette Chatre
acd9f9cc30 MAINTAINERS: remove Reinette Chatre as iwlwifi maintainer
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:28:56 -05:00
Greg Kroah-Hartman
9c4cf6d94f rt2x00: add device id for windy31 usb device
This patch adds the device id for the windy31 USB device to the rt73usb
driver.

Thanks to Ralf Flaxa for reporting this and providing testing and a
sample device.

Reported-by: Ralf Flaxa <rf@suse.de>
Tested-by: Ralf Flaxa <rf@suse.de>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:28:56 -05:00
Felix Fietkau
eb3e554b4b mac80211: fix a crash in ieee80211_beacon_get_tim on change_interface
Some drivers (e.g. ath9k) do not always disable beacons when they're
supposed to. When an interface is changed using the change_interface op,
the mode specific sdata part is in an undefined state and trying to
get a beacon at this point can produce weird crashes.

To fix this, add a check for ieee80211_sdata_running before using
anything from the sdata.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-01-25 16:28:56 -05:00
Eric Dumazet
26ad787962 pktgen: speedup fragmented skbs
We spend lot of time clearing pages in pktgen.
(Or not clearing them on ipv6 and leaking kernel memory)

Since we dont modify them, we can use one zeroed page, and get
references on it. This page can use NUMA affinity as well.

Define pktgen_finalize_skb() helper, used both in ipv4 and ipv6

Results using skbs with one frag :

Before patch :

Result: OK: 608980458(c608978520+d1938) nsec, 1000000000
(100byte,1frags)
  1642088pps 1313Mb/sec (1313670400bps) errors: 0

After patch :

Result: OK: 345285014(c345283891+d1123) nsec, 1000000000
(100byte,1frags)
  2896158pps 2316Mb/sec (2316926400bps) errors: 0

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 13:26:05 -08:00
Jiri Pirko
672bda3370 bonding: fix return value of couple of store functions
count is incorrectly returned even in case of fail. Return ret instead.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 13:13:16 -08:00
David S. Miller
73a8bd74e2 ipv6: Revert 'administrative down' address handling changes.
This reverts the following set of commits:

d1ed113f16 ("ipv6: remove duplicate neigh_ifdown")
29ba5fed1b ("ipv6: don't flush routes when setting loopback down")
9d82ca98f7 ("ipv6: fix missing in6_ifa_put in addrconf")
2de7957072 ("ipv6: addrconf: don't remove address state on ifdown if the address is being kept")
8595805aaf ("IPv6: only notify protocols if address is compeletely gone")
27bdb2abcc ("IPv6: keep tentative addresses in hash table")
93fa159abe ("IPv6: keep route for tentative address")
8f37ada5b5 ("IPv6: fix race between cleanup and add/delete address")
84e8b803f1 ("IPv6: addrconf notify when address is unavailable")
dc2b99f71e ("IPv6: keep permanent addresses on admin down")

because the core semantic change to ipv6 address handling on ifdown
has broken some things, in particular "disable_ipv6" sysctl handling.

Stephen has made several attempts to get things back in working order,
but nothing has restored disable_ipv6 fully yet.

Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Tested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-25 12:49:08 -08:00
Changli Gao
9f4e1ccd80 netfilter: ipvs: fix compiler warnings
Fix compiler warnings when IP_VS_DBG() isn't defined.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Acked-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
2011-01-25 23:17:51 +10:00
Jesper Dangaard Brouer
de0368d5fe textsearch: doc - fix spelling in lib/textsearch.c.
Found the following spelling errors while reading the textsearch code:
  "facitilies"  -> "facilities"
  "continously" -> "continuously"
  "arbitary"    -> "arbitrary"
  "patern"      -> "pattern"
  "occurences"  -> "occurrences"

I'll try to push this patch through DaveM, given the only users
of textsearch is in the net/ tree (nf_conntrack_amanda.c, xt_string.c
and em_text.c)

Signed-off-by: Jesper Sander <sander.contrib@gmail.com>
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:33:30 -08:00
Vlad Dogaru
a512b92b3a net: add sysfs entry for device group
The group of a network device can be queried or changed from userspace
using sysfs.

For example, considering sysfs mounted in /sys, one can change the group
that interface lo belongs to:
	echo 1 > /sys/class/net/lo/group

Signed-off-by: Vlad Dogaru <ddvlad@rosedu.org>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:23:28 -08:00
Jesper Juhl
986e3f6e2b USB NET KL5KUSB101: Fix mem leak in error path of kaweth_download_firmware()
We will leak the storage allocated by request_firmware() if the size of
the firmware is greater than KAWETH_FIRMWARE_BUF_SIZE.
This removes the leak by calling release_firmware() before we return
-ENOSPC.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:20:24 -08:00
Tejun Heo
2321f3b4af pch_gbe: don't use flush_scheduled_work()
Directly cancel adapter->reset_task instead of using to-be-deprecated
flush_scheduled_work().

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:19:10 -08:00
Jiri Pirko
84c49d8c3e veth: remove unneeded ifname code from veth_newlink()
The code is not needed because tb[IFLA_IFNAME] is already
processed in rtnl_newlink(). Remove this redundancy.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:18:18 -08:00
Michael Chan
7c8104774e bnx2: Always set ETH_FLAG_TXVLAN
TSO does not work if the VLAN tag is in the packet (non-accelerated).
We may be able to remove this restriction in future firmware.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 23:16:07 -08:00
Eugene Teo
b7c7d01aae net: clear heap allocation for ethtool_get_regs()
There is a conflict between commit b00916b1 and a77f5db3. This patch resolves
the conflict by clearing the heap allocation in ethtool_get_regs().

Cc: stable@kernel.org
Signed-off-by: Eugene Teo <eugeneteo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 21:05:17 -08:00
Hans Schillstrom
07924709f6 IPVS netns BUG, register sysctl for root ns
The newly created table was not used when register sysctl for a new namespace.
I.e. sysctl doesn't work for other than root namespace (init_net)

Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
2011-01-25 12:13:08 +10:00
David S. Miller
d80bc0fd26 ipv6: Always clone offlink routes.
Do not handle PMTU vs. route lookup creation any differently
wrt. offlink routes, always clone them.

Reported-by: PK <runningdoglackey@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 16:01:58 -08:00
Michał Mirosław
acd1130e87 net: reduce and unify printk level in netdev_fix_features()
Reduce printk() levels to KERN_INFO in netdev_fix_features() as this will
be used by ethtool and might spam dmesg unnecessarily.

This converts the function to use netdev_info() instead of plain printk().

As a side effect, bonding and bridge devices will now log dropped features
on every slave device change.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:45:15 -08:00
Michał Mirosław
04ed3e741d net: change netdev->features to u32
Quoting Ben Hutchings: we presumably won't be defining features that
can only be enabled on 64-bit architectures.

Occurences found by `grep -r` on net/, drivers/net, include/

[ Move features and vlan_features next to each other in
  struct netdev, as per Eric Dumazet's suggestion -DaveM ]

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:32:47 -08:00
Michał Mirosław
57422dc530 net: Move check of checksum features to netdev_fix_features()
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:29:11 -08:00
John Fastabend
3dce38a02d dcbnl: make get_app handling symmetric for IEEE and CEE DCBx
The IEEE get/set app handlers use generic routines and do not
require the net_device to implement the dcbnl_ops routines. This
patch makes it symmetric so user space and drivers do not have
to handle the CEE version and IEEE DCBx versions differently.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:19:55 -08:00
David S. Miller
5955e75247 Merge branch 'can/at91_can-for-net-2.6' of git://git.pengutronix.de/git/mkl/linux-2.6 2011-01-24 15:16:11 -08:00
David S. Miller
2505c54831 typhoon: Kill references to UTS_RELEASE
This makes the driver get rebuilt every single time you
type 'make' which is beyond rediculious.

I hereby declare this driver to have version "1.0"

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:11:02 -08:00
Sakari Ailus
fa6d5d4f2b tlan: add suspend/resume support
Add suspend/resume support to tlan driver. This allows not unloading the
driver over suspend/resume.

Also, start (or now, wake) the queue after resetting the adapter --- not the
other way around.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:07:06 -08:00
Sakari Ailus
c659c38b27 tlan: Code cleanup: checkpatch.pl is relatively happy now.
- Remove CamelCase.
- Convert hexadecimals to lower case.
- Remove useless comments. Tlan driver contained a name of the function at
  the end of it in a comment. Remove those comments.
- Remove local typedefs. Use real types instead of typedefs in code.
- Resolve space issues and reindent.
- One warning remain, it's a case where printing a single line involves a
  number of printk()s.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 15:07:06 -08:00
Ben Hutchings
c445477d74 net: RPS: Enable hardware acceleration of RFS
Allow drivers for multiqueue hardware with flow filter tables to
accelerate RFS.  The driver must:

1. Set net_device::rx_cpu_rmap to a cpu_rmap of the RX completion
IRQs (in queue order).  This will provide a mapping from CPUs to the
queues for which completions are handled nearest to them.

2. Implement net_device_ops::ndo_rx_flow_steer.  This operation adds
or replaces a filter steering the given flow to the given RX queue, if
possible.

3. Periodically remove filters for which rps_may_expire_flow() returns
true.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 14:53:01 -08:00
Ben Hutchings
c39649c331 lib: cpu_rmap: CPU affinity reverse-mapping
When initiating I/O on a multiqueue and multi-IRQ device, we may want
to select a queue for which the response will be handled on the same
or a nearby CPU.  This requires a reverse-map of IRQ affinity.  Add
library functions to support a generic reverse-mapping from CPUs to
objects with affinity and the specific case where the objects are
IRQs.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 14:51:56 -08:00
Eric Dumazet
fd0273c503 tcp: fix bug in listening_get_next()
commit a8b690f98b (tcp: Fix slowness in read /proc/net/tcp)
introduced a bug in handling of SYN_RECV sockets.

st->offset represents number of sockets found since beginning of
listening_hash[st->bucket].

We should not reset st->offset when iterating through
syn_table[st->sbucket], or else if more than ~25 sockets (if
PAGE_SIZE=4096) are in SYN_RECV state, we exit from listening_get_next()
with a too small st->offset

Next time we enter tcp_seek_last_pos(), we are not able to seek past
already found sockets.

Reported-by: PK <runningdoglackey@yahoo.com>
CC: Tom Herbert <therbert@google.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 14:41:20 -08:00
David S. Miller
3408404a4c inetpeer: Use correct AVL tree base pointer in inet_getpeer().
Family was hard-coded to AF_INET but should be daddr->family.

This fixes crashes when unlinking ipv6 peer entries, since the
unlink code was looking up the base pointer properly.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-24 14:38:09 -08:00