GitHub/LineageOS/android_kernel_motorola_exynos9610.git
11 years agonet: asix: handle packets crossing URB boundaries
Lucas Stach [Wed, 16 Jan 2013 04:24:07 +0000 (04:24 +0000)]
net: asix: handle packets crossing URB boundaries

ASIX AX88772B started to pack data even more tightly. Packets and the ASIX packet
header may now cross URB boundaries. To handle this we have to introduce
some state between individual calls to asix_rx_fixup().

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: asix: init ASIX AX88772B MAC from EEPROM
Lucas Stach [Wed, 16 Jan 2013 04:24:06 +0000 (04:24 +0000)]
net: asix: init ASIX AX88772B MAC from EEPROM

The device comes up with a MAC address of all zeros. We need to read the
initial device MAC from EEPROM so it can be set properly later.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'intel'
David S. Miller [Fri, 18 Jan 2013 19:12:11 +0000 (14:12 -0500)]
Merge branch 'intel'

Jeff Kirsher says:

====================
This series contains updates to e1000e and igb.  Most notably is the
added timestamp support in e1000e and additional software timestamp
support in igb.  As well as, the added thermal data support and SR-IOV
configuration support in igb.

v2- dropped the following patches from the previous 14 patch series
because changes were requested from the community:
  e1000e: add support for IEEE-1588 PTP
  igb: Report L4 Rx hash via skb->l4_rxhash
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoigb: Use in-kernel PTP_EV_PORT #define
Matthew Vick [Thu, 13 Dec 2012 07:20:36 +0000 (07:20 +0000)]
igb: Use in-kernel PTP_EV_PORT #define

Rather than use an extra #define for something that already exists, use the
kernel #define for the PTP port.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Free any held skb that should have been timestamped on remove
Matthew Vick [Thu, 13 Dec 2012 07:20:37 +0000 (07:20 +0000)]
igb: Free any held skb that should have been timestamped on remove

To prevent a race condition where an skb has been saved to return the Tx
timestamp later and the driver is removed, add a check to determine if we
have an skb stored and, if so, free it.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Add mechanism for detecting latched hardware Rx timestamp
Matthew Vick [Thu, 13 Dec 2012 07:20:35 +0000 (07:20 +0000)]
igb: Add mechanism for detecting latched hardware Rx timestamp

Add a check against possible Rx timestamp freezing in the hardware via
watchdog mechanism. This situation can occur when an Rx timestamp has been
latched, but the packet has been dropped because the Rx ring is full.

Whenever a packet comes in that should be timestamped, the Rx timestamp
gets latched into the hardware registers and we will store the jiffy value
in the rx_ring. The watchdog will keep track of his own jiffy timer
whenever there is no valid timestamp in the registers.

If the watchdog detects a valid timestamp in the registers, meaning that no
Rx packet has consumed it yet, it will check which time is most recent: the
last time in the watchdog or any time in the rx_rings. If the most recent
"event" was more than 5 seconds ago, it will flush the Rx timestamp and
print a warning message to the syslog.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Add timeout for PTP Tx work item
Matthew Vick [Thu, 13 Dec 2012 07:20:34 +0000 (07:20 +0000)]
igb: Add timeout for PTP Tx work item

When transmitting a packet that must return a Tx timestamp, a work item
gets scheduled to poll for the Tx timestamp being completed in hardware.
Add a timeout on this work item of 15 seconds from when the driver gets the
skb, after which it will stop polling. Report via stats and system log if
this occurs.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Add support for SW timestamping
Matthew Vick [Thu, 13 Dec 2012 07:20:33 +0000 (07:20 +0000)]
igb: Add support for SW timestamping

Enable SW timestamping for situations where the user may prefer it over HW
timestamping or there may not be HW timestamping.

Cc: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Acked-by: Jacob Keller <Jacob.e.keller@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Enable hwmon data output for thermal sensors via I2C.
Carolyn Wyborny [Fri, 7 Dec 2012 03:01:42 +0000 (03:01 +0000)]
igb: Enable hwmon data output for thermal sensors via I2C.

Some of our adapters have internal sensors that report thermal data.  This
patch enables reporting of that data via sysfs.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Add support functions to access thermal data.
Carolyn Wyborny [Fri, 7 Dec 2012 03:01:16 +0000 (03:01 +0000)]
igb: Add support functions to access thermal data.

Some of our devices have internal sensors for reporting thermal data.
This patch creates the interface to the sensors for exporting via sysfs.
Subsequent patch will actually export the data.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Add i2c interface to igb.
Carolyn Wyborny [Fri, 7 Dec 2012 03:00:30 +0000 (03:00 +0000)]
igb: Add i2c interface to igb.

Some of our adapters have sensors on them accessible via i2c and a private
interface.  This patch implements the kernel interface for i2c to those sensors.
Subsequent patches will provide functions to export that data.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoigb: Enable SR-IOV configuration via PCI sysfs interface
Greg Rose [Thu, 17 Jan 2013 09:03:06 +0000 (01:03 -0800)]
igb: Enable SR-IOV configuration via PCI sysfs interface

Implement callback in the driver for the new PCI bus driver
interface that allows the user to enable/disable SR-IOV
virtual functions in a device via the sysfs interface.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: add support for hardware timestamping on some devices
Bruce Allan [Thu, 27 Dec 2012 08:32:33 +0000 (08:32 +0000)]
e1000e: add support for hardware timestamping on some devices

On 82574, 82583, 82579, I217 and I218 add support for hardware time
stamping of all or no Rx packets and Tx packets which have the
SKBTX_HW_TSTAMP flag set.  Update the .get_ts_info ethtool operation to
report the supported time stamping modes, and enable and disable hardware
time stamping with the SIOCSHWTSTAMP ioctl.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: Use standard #defines for PCIe Capability ASPM fields
Bjorn Helgaas [Thu, 6 Dec 2012 06:40:07 +0000 (06:40 +0000)]
e1000e: Use standard #defines for PCIe Capability ASPM fields

Use the standard #defines for PCIe Capability ASPM fields.

Previously we used PCIE_LINK_STATE_L0S and PCIE_LINK_STATE_L1 directly, but
these are defined for the Linux ASPM interfaces, e.g.,
pci_disable_link_state(), and only coincidentally match the actual register
bits.  PCIE_LINK_STATE_CLKPM, also part of that interface, does not match
the register bit.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: e1000-devel@lists.sourceforge.net
Acked-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>
11 years agoe1000e: add ethtool .get_eee/.set_eee
Bruce Allan [Wed, 5 Dec 2012 08:40:59 +0000 (08:40 +0000)]
e1000e: add ethtool .get_eee/.set_eee

Add the ability to query and set Energy Efficient Ethernet parameters via
ethtool for applicable devices.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoipv6: Complete neighbour entry removal from dst_entry.
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:54:05 +0000 (12:54 +0000)]
ipv6: Complete neighbour entry removal from dst_entry.

CC: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Do not depend on rt->n in ip6_finish_output2().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:54:00 +0000 (12:54 +0000)]
ipv6: Do not depend on rt->n in ip6_finish_output2().

If neigh is not found, create new one.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Do not depend on rt->n in ip6_dst_lookup_tail().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:55 +0000 (12:53 +0000)]
ipv6: Do not depend on rt->n in ip6_dst_lookup_tail().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Introduce rt6_nexthop() to select nexthop address.
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:48 +0000 (12:53 +0000)]
ipv6: Introduce rt6_nexthop() to select nexthop address.

For RTF_GATEWAY route, return rt->rt6i_gateway.
Otherwise, return 2nd argument (destination address).

This will be used by following patches which remove rt->n
dependency patches in ip6_dst_lookup_tail() and ip6_finish_output2().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Do not depend on rt->n in rt6_probe().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:43 +0000 (12:53 +0000)]
ipv6: Do not depend on rt->n in rt6_probe().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Do not depend on rt->n in rt6_check_neigh().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:38 +0000 (12:53 +0000)]
ipv6: Do not depend on rt->n in rt6_check_neigh().

CC: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Do not depend on rt->n in ip6_pol_route().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:32 +0000 (12:53 +0000)]
ipv6: Do not depend on rt->n in ip6_pol_route().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agondisc: Introduce __ipv6_neigh_lookup_noref().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:22 +0000 (12:53 +0000)]
ndisc: Introduce __ipv6_neigh_lookup_noref().

This function, which looks up neighbour entry for an IPv6 address
without touching refcnt, will be used for patches to remove
dependency on rt->n (neighbour entry in rt6_info).

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 route: Dump gateway based on RTF_GATEWAY flag and rt->rt6i_gateway.
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:15 +0000 (12:53 +0000)]
ipv6 route: Dump gateway based on RTF_GATEWAY flag and rt->rt6i_gateway.

Do not depend on rt->n.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agondisc: Remove tbl argument for __ipv6_neigh_lookup().
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:09 +0000 (12:53 +0000)]
ndisc: Remove tbl argument for __ipv6_neigh_lookup().

We can refer to nd_tbl directly.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agondisc: Update neigh->updated with write lock.
YOSHIFUJI Hideaki / 吉藤英明 [Thu, 17 Jan 2013 12:53:02 +0000 (12:53 +0000)]
ndisc: Update neigh->updated with write lock.

neigh->nud_state and neigh->updated are under protection of
neigh->lock.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: fix GRO parameters
Yuval Mintz [Thu, 17 Jan 2013 03:26:21 +0000 (03:26 +0000)]
bnx2x: fix GRO parameters

bnx2x does an internal GRO pass but doesn't provide gso_segs, thus
breaking qdisc_pkt_len_init() in case ingress qdisc is used.

We store gso_segs in NAPI_GRO_CB(skb)->count, where tcp_gro_complete()
expects to find the number of aggregated segments.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agocxgb3: Fix Tx csum stats
Vipul Pandya [Wed, 16 Jan 2013 23:29:59 +0000 (23:29 +0000)]
cxgb3: Fix Tx csum stats

Signed-off-by: Jay Hernandez <jay@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: fix ipv6_prefix_equal64_half mask conversion
Fabio Baltieri [Wed, 16 Jan 2013 21:30:17 +0000 (22:30 +0100)]
ipv6: fix ipv6_prefix_equal64_half mask conversion

Fix the 64bit optimized version of ipv6_prefix_equal to convert the
bitmask to network byte order only after the bit-shift.

The bug was introduced in:

3867517 ipv6: 64bit version of ipv6_prefix_equal().

Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: increase fragment memory usage limits
Jesper Dangaard Brouer [Tue, 15 Jan 2013 07:16:35 +0000 (07:16 +0000)]
net: increase fragment memory usage limits

Increase the amount of memory usage limits for incomplete
IP fragments.

Arguing for new thresh high/low values:

 High threshold = 4 MBytes
 Low  threshold = 3 MBytes

The fragmentation memory accounting code, tries to account for the
real memory usage, by measuring both the size of frag queue struct
(inet_frag_queue (ipv4:ipq/ipv6:frag_queue)) and the SKB's truesize.

We want to be able to handle/hold-on-to enough fragments, to ensure
good performance, without causing incomplete fragments to hurt
scalability, by causing the number of inet_frag_queue to grow too much
(resulting longer searches for frag queues).

For IPv4, how much memory does the largest frag consume.

Maximum size fragment is 64K, which is approx 44 fragments with
MTU(1500) sized packets. Sizeof(struct ipq) is 200.  A 1500 byte
packet results in a truesize of 2944 (not 2048 as I first assumed)

  (44*2944)+200 = 129736 bytes

The current default high thresh of 262144 bytes, is obviously
problematic, as only two 64K fragments can fit in the queue at the
same time.

How many 64K fragment can we fit into 4 MBytes:

  4*2^20/((44*2944)+200) = 32.34 fragment in queues

An attacker could send a separate/distinct fake fragment packets per
queue, causing us to allocate one inet_frag_queue per packet, and thus
attacking the hash table and its lists.

How many frag queue do we need to store, and given a current hash size
of 64, what is the average list length.

Using one MTU sized fragment per inet_frag_queue, each consuming
(2944+200) 3144 bytes.

  4*2^20/(2944+200) = 1334 frag queues -> 21 avg list length

An attack could send small fragments, the smallest packet I could send
resulted in a truesize of 896 bytes (I'm a little surprised by this).

  4*2^20/(896+200)  = 3827 frag queues -> 59 avg list length

When increasing these number, we also need to followup with
improvements, that is going to help scalability.  Simply increasing
the hash size, is not enough as the current implementation does not
have a per hash bucket locking.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agosk-filter: Add ability to lock a socket filter program
Vincent Bernat [Wed, 16 Jan 2013 21:55:49 +0000 (22:55 +0100)]
sk-filter: Add ability to lock a socket filter program

While a privileged program can open a raw socket, attach some
restrictive filter and drop its privileges (or send the socket to an
unprivileged program through some Unix socket), the filter can still
be removed or modified by the unprivileged program. This commit adds a
socket option to lock the filter (SO_LOCK_FILTER) preventing any
modification of a socket filter program.

This is similar to OpenBSD BIOCLOCK ioctl on bpf sockets, except even
root is not allowed change/drop the filter.

The state of the lock can be read with getsockopt(). No error is
triggered if the state is not changed. -EPERM is returned when a user
tries to remove the lock or to change/remove the filter while the lock
is active. The check is done directly in sk_attach_filter() and
sk_detach_filter() and does not affect only setsockopt() syscall.

Signed-off-by: Vincent Bernat <bernat@luffy.cx>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: fix a missing dev refcounting
Cong Wang [Thu, 17 Jan 2013 04:21:08 +0000 (12:21 +0800)]
netpoll: fix a missing dev refcounting

__dev_get_by_name() doesn't refcount the network device,
so we have to do this by ourselves. Noticed by Eric.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Fix endianess warning in ip6_flow_hdr().
YOSHIFUJI Hideaki [Thu, 17 Jan 2013 03:10:57 +0000 (12:10 +0900)]
ipv6: Fix endianess warning in ip6_flow_hdr().

Commit 3e4e4c1f ("ipv6: Introduce ip6_flow_hdr() to fill version,
tclass and flowlabel.) uses ntohl(), which should be htonl().

Found by Fengguang Wu <fengguang.wu@intel.com>.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agor8169: remove unneeded dirty_rx index
Timo Teräs [Tue, 15 Jan 2013 21:01:24 +0000 (21:01 +0000)]
r8169: remove unneeded dirty_rx index

After commit 6f0333b ("r8169: use 50% less ram for RX ring") the rx
ring buffers are always copied making dirty_rx useless.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: fix a rtnl lock assertion failure
Cong Wang [Mon, 14 Jan 2013 23:34:06 +0000 (23:34 +0000)]
netpoll: fix a rtnl lock assertion failure

v4: hold rtnl lock for the whole netpoll_setup()
v3: remove the comment
v2: use RCU read lock

This patch fixes the following warning:

[   72.013864] RTNL: assertion failed at net/core/dev.c (4955)
[   72.017758] Pid: 668, comm: netpoll-prep-v6 Not tainted 3.8.0-rc1+ #474
[   72.019582] Call Trace:
[   72.020295]  [<ffffffff8176653d>] netdev_master_upper_dev_get+0x35/0x58
[   72.022545]  [<ffffffff81784edd>] netpoll_setup+0x61/0x340
[   72.024846]  [<ffffffff815d837e>] store_enabled+0x82/0xc3
[   72.027466]  [<ffffffff815d7e51>] netconsole_target_attr_store+0x35/0x37
[   72.029348]  [<ffffffff811c3479>] configfs_write_file+0xe2/0x10c
[   72.030959]  [<ffffffff8115d239>] vfs_write+0xaf/0xf6
[   72.032359]  [<ffffffff81978a05>] ? sysret_check+0x22/0x5d
[   72.033824]  [<ffffffff8115d453>] sys_write+0x5c/0x84
[   72.035328]  [<ffffffff819789d9>] system_call_fastpath+0x16/0x1b

In case of other races, hold rtnl lock for the entire netpoll_setup() function.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: better RSS support
Stephen Hemminger [Tue, 15 Jan 2013 07:28:35 +0000 (07:28 +0000)]
vmxnet3: better RSS support

The VMXNET3 device provides RSS hash value for received packets,
but it is not being used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: use static RSS key
Stephen Hemminger [Tue, 15 Jan 2013 07:28:34 +0000 (07:28 +0000)]
vmxnet3: use static RSS key

Rather than generating a different RSS key on each boot, just use
a predetermined value that will map same flow to same value on
every device for more predictable testing. This is already done
on most hardware drivers.

Initial key value just some arbitrary bits extracted once
from /dev/random.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: remove unused irq_share_mode
Stephen Hemminger [Tue, 15 Jan 2013 07:28:33 +0000 (07:28 +0000)]
vmxnet3: remove unused irq_share_mode

This static variable is never set, it initializes to 0 which
is VMXNET3_INTR_BUDDYSHARE, and never changes.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: remove device counter
Stephen Hemminger [Tue, 15 Jan 2013 07:28:32 +0000 (07:28 +0000)]
vmxnet3: remove device counter

An atomic counter of devices present is maintained but never used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: remove VMXNET3_MAX_DEVICES
Stephen Hemminger [Tue, 15 Jan 2013 07:28:31 +0000 (07:28 +0000)]
vmxnet3: remove VMXNET3_MAX_DEVICES

Defined but never used.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: use netdev_ printk wrappers
Stephen Hemminger [Tue, 15 Jan 2013 07:28:30 +0000 (07:28 +0000)]
vmxnet3: use netdev_ printk wrappers

Use the standard netdev_xxx() and dev_xxx() wrappers to format
log messages.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: use netdev_dbg
Stephen Hemminger [Tue, 15 Jan 2013 07:28:29 +0000 (07:28 +0000)]
vmxnet3: use netdev_dbg

Use netdev_dbg() rather than dev_dbg() because the former prints
the device name which is more useful than the pci name.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: fix messages printed before registration
Stephen Hemminger [Tue, 15 Jan 2013 07:28:28 +0000 (07:28 +0000)]
vmxnet3: fix messages printed before registration

This messages that occur during boot time from this device
when netdev_err is called before calling register_netdevice().
Switch to using dev_XXX macros which correlate message with PCI info which
is available.

Rather than fixing the features message, just remove it since
the information is redundant and available through ethtool.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: remove unnecessary bookkeeping
Stephen Hemminger [Tue, 15 Jan 2013 07:28:27 +0000 (07:28 +0000)]
vmxnet3: remove unnecessary bookkeeping

The uncommitted[] array was set but never used except in a debug
message. Remove it.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovmxnet3: use netdev_alloc_skb_ip_align
Stephen Hemminger [Tue, 15 Jan 2013 07:28:26 +0000 (07:28 +0000)]
vmxnet3: use netdev_alloc_skb_ip_align

Use netdev_alloc_skb_align, rather than open code using dev_alloc_skb.
Change allocation at startup to use GFP_KERNEL.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Wed, 16 Jan 2013 19:31:56 +0000 (14:31 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
This series contains updates to e1000e only.

v2- updates patch 09/15 "e1000e: resolve checkpatch PREFER_PR_LEVEL warning"
    based on feedback from Joe Perches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoe1000e: merge multiple conditional statements into one
Bruce Allan [Wed, 5 Dec 2012 06:26:56 +0000 (06:26 +0000)]
e1000e: merge multiple conditional statements into one

Cleanup a set of conditional tests.

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>
11 years agoe1000e: cleanup code duplication
Bruce Allan [Wed, 5 Dec 2012 06:26:51 +0000 (06:26 +0000)]
e1000e: cleanup code duplication

The removed code block is duplicated in e1000e_write_itr() so use that
instead.

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>
11 years agoe1000e: cleanup magic number
Bruce Allan [Wed, 5 Dec 2012 06:26:46 +0000 (06:26 +0000)]
e1000e: cleanup magic number

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>
11 years agoe1000e: cleanup unnecessary line wrap
Bruce Allan [Wed, 5 Dec 2012 06:26:40 +0000 (06:26 +0000)]
e1000e: cleanup unnecessary line wrap

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>
11 years agoe1000e: cleanup unusual comment placement
Bruce Allan [Wed, 5 Dec 2012 06:26:35 +0000 (06:26 +0000)]
e1000e: cleanup unusual comment placement

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>
11 years agoe1000e: cleanup redundant statistics counter
Bruce Allan [Wed, 5 Dec 2012 06:26:30 +0000 (06:26 +0000)]
e1000e: cleanup redundant statistics counter

rx_long_byte_count can be removed since it is duplicated in rx_bytes

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>
11 years agoe1000e: resolve checkpatch PREFER_PR_LEVEL warning
Bruce Allan [Sat, 12 Jan 2013 03:11:25 +0000 (03:11 +0000)]
e1000e: resolve checkpatch PREFER_PR_LEVEL warning

WARNING: Prefer netdev_info(netdev, ... then dev_info(dev, ...
then pr_info(...  to printk(KERN_INFO ...

v2 - remove unnecessary "e1000e:" prefix as pointed out by Joe Perches
     since that produces a redundant "e1000e:" in the log message

Cc: Joe Perches <joe@perches.com>
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>
11 years agoe1000e: add missing bailout on error
Bruce Allan [Wed, 5 Dec 2012 06:26:19 +0000 (06:26 +0000)]
e1000e: add missing bailout on error

...discovered during code inspection.

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>
11 years agoe1000e: unexpected "Reset adapter" message when cable pulled
Bruce Allan [Wed, 5 Dec 2012 06:26:14 +0000 (06:26 +0000)]
e1000e: unexpected "Reset adapter" message when cable pulled

When there is heavy traffic and the cable is pulled, the driver must reset
the adapter to flush the Tx queue in hardware.  This causes the reset path
to be scheduled and logs the message "Reset adapter" which could be mis-
interpreted as an error by the user.  Change how the reset path is invoked
for this scenario by using the same method done in an existing work-around
for 80003es2lan (i.e. set a flag and if the flag is set in the reset code
do not log the "Reset adapter" message since the reset is expected).

Re-name the FLAG_RX_RESTART_NOW to FLAG_RESTART_NOW since it is used for
resets in both the Rx and Tx specific code.

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>
11 years agoe1000e: fix enabling of EEE on 82579 and I217
Bruce Allan [Wed, 5 Dec 2012 06:26:08 +0000 (06:26 +0000)]
e1000e: fix enabling of EEE on 82579 and I217

Energy Efficient Ethernet on 82579 and I217 should only be enabled if not
disabled by the user, if the link is full duplex and the link partner has
similar EEE capabilities (stored in different EMI registers on the two
different parts).

After enabling EEE, read the IEEE MMD register 3.1 (which is also stored in
different EMI registers on the two different parts) to clear the count of
received Tx/Rx LPI indications.

Also, rename I217_EEE_100_SUPPORTED to I82579_EEE_100_SUPPORTED to indicate
the bit is valid starting with I82579 (released before I217).

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: 82577: workaround for link drop issue
Bruce Allan [Wed, 5 Dec 2012 06:26:03 +0000 (06:26 +0000)]
e1000e: 82577: workaround for link drop issue

When connected to certain switches, the 82577 PHY might drop link
unexpectedly.  Work around the issue by setting the Mean Square Error
higher than the hardware default.

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>
11 years agoe1000e: helper functions for accessing EMI registers
Bruce Allan [Wed, 5 Dec 2012 06:25:58 +0000 (06:25 +0000)]
e1000e: helper functions for accessing EMI registers

The Extended Management Interface (EMI) registers are accessed by first
writing the EMI register offset to the EMI_ADDR regiter and then either
reading or writing the data to/from the EMI_DATA register.  Add helper
functions for performing these steps and convert existing EMI register
accesses accordingly.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agonet_sched: fix qdisc_pkt_len_init()
Eric Dumazet [Wed, 16 Jan 2013 05:14:21 +0000 (21:14 -0800)]
net_sched: fix qdisc_pkt_len_init()

commit 1def9238d4aa2 (net_sched: more precise pkt_len computation)
does a wrong computation of mac + network headers length, as it includes
the padding before the frame.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoe1000e: Invalid Image CSUM bit changed for I217
Bruce Allan [Wed, 9 Jan 2013 08:15:42 +0000 (08:15 +0000)]
e1000e: Invalid Image CSUM bit changed for I217

On I217, the bit that indicates an invalid EEPROM (NVM) image checksum has
changed from previous ICH/PCH LOMs.  When validating the EEPROM checksum,
check the appropriate bit on different devices.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
11 years agoe1000e: Acquire/release semaphore when writing each EEPROM page
Bruce Allan [Wed, 5 Dec 2012 06:25:47 +0000 (06:25 +0000)]
e1000e: Acquire/release semaphore when writing each EEPROM page

When data blocks are written to the EEPROM, the HW/SW/FW semaphore must be
held for the duration.  With large data blocks on 80003es2lan, 82571 and
82572, this can take too long and cause the firmware to take ownership of
the semaphore and consequently ownership of writes to the EEPROM.
Instead, acquire and release the semaphore for each page of the block
written.

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>
11 years agoe1000e: SerDes autoneg flow control
Bruce Allan [Wed, 5 Dec 2012 06:25:42 +0000 (06:25 +0000)]
e1000e: SerDes autoneg flow control

Enables flow control to be set in SerDes autoneg mode. This is what is
done for copper, but relies on a different set of register/bit checks
since this is all done within the Mac registers.

Remove inapplicable comment in defines.h

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>
11 years agobnx2x: Introduce 2013 and advance version to 1.78.02
Yuval Mintz [Mon, 14 Jan 2013 05:11:50 +0000 (05:11 +0000)]
bnx2x: Introduce 2013 and advance version to 1.78.02

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Added FW GRO bridging support
Yuval Mintz [Mon, 14 Jan 2013 05:11:49 +0000 (05:11 +0000)]
bnx2x: Added FW GRO bridging support

Since submit 621b4d6 the bnx2x driver support FW GRO.
However, when using the device with GRO enabled in bridging
scenarios throughput is very low, as the bridge expects all
incoming packets to be passed with CHECKSUM_PARTIAL -
a demand which is satisfied by the SW GRO implementation,
but was missed in the bnx2x driver implementation (which returned
CHECKSUM_UNNECESSARY).

Now, given that the traffic is supported by FW GRO (TCP/IP),
the bnx2x driver calculates the pseudo checksum by itself,
passing skbs with CHECKSUM_PARTIAL and giving a much better
throughput when receiving GRO traffic.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Clean previous IGU status before ack
Yuval Mintz [Mon, 14 Jan 2013 05:11:48 +0000 (05:11 +0000)]
bnx2x: Clean previous IGU status before ack

When enabling interrupts, acknowledge the interrupt only
after configuring the IGU to the correct interrupt mode
(otherwise it would dirty selftests)

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: improve stop-on-error
Yuval Mintz [Mon, 14 Jan 2013 05:11:47 +0000 (05:11 +0000)]
bnx2x: improve stop-on-error

Get better control over interrupts during panic, and allow FW to
test outgoing Tx packets when stop-on-error is allowed.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: add `ethtool -w' support.
Miriam Shitrit [Mon, 14 Jan 2013 05:11:46 +0000 (05:11 +0000)]
bnx2x: add `ethtool -w' support.

This revises and enhances the bnx2x register dump facilities,
adding support for `ethtool -w' on top of `ethtool -d'.

Signed-off-by: Miriam Shitrit <miris@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Added nvram personalities support
Yuval Mintz [Mon, 14 Jan 2013 05:11:45 +0000 (05:11 +0000)]
bnx2x: Added nvram personalities support

When a device is configured to act as either iscsi or fcoe
device in its nvram, prevent the other from being misused by
preventing its activation in the driver.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Fix rare self-test failures
Yaniv Rosner [Mon, 14 Jan 2013 05:11:44 +0000 (05:11 +0000)]
bnx2x: Fix rare self-test failures

On rare occasions, self test link may fail since the link is
being sampled while it's still being stabilized.
To correct this behaviour, try to sample the link for 2 seconds
prior to declaring a failure.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: use SAN Mac for FCoE.
Dmitry Kravkov [Mon, 14 Jan 2013 05:11:43 +0000 (05:11 +0000)]
bnx2x: use SAN Mac for FCoE.

Current logic causes chips running in switch dependent multi-function
FCoE mode not to configure their MAC, leading to an all 0s MAC.

This patch configures the interface with the SAN Mac instead.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Add an additional fatal hw assertion - BRB_HW_INTERRUPT
Dmitry Kravkov [Mon, 14 Jan 2013 05:11:42 +0000 (05:11 +0000)]
bnx2x: Add an additional fatal hw assertion - BRB_HW_INTERRUPT

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobnx2x: Clear dirty status when booting after UNDI
Yuval Mintz [Mon, 14 Jan 2013 05:11:41 +0000 (05:11 +0000)]
bnx2x: Clear dirty status when booting after UNDI

Self-tests following boot from SAN have failed as the
UNDI driver might leave some NIG interrupt indications.

This patch does the clean-up, clearing those indications
and allowing the test to pass.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Tue, 15 Jan 2013 20:05:59 +0000 (15:05 -0500)]
Merge git://git./linux/kernel/git/davem/net

Conflicts:
Documentation/networking/ip-sysctl.txt
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c

Both conflicts were simply overlapping context.

A build fix for qlcnic is in here too, simply removing the added
devinit annotations which no longer exist.

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotg3: Fix crc errors on jumbo frame receive
Nithin Nayak Sujir [Mon, 14 Jan 2013 17:11:00 +0000 (17:11 +0000)]
tg3: Fix crc errors on jumbo frame receive

TG3_PHY_AUXCTL_SMDSP_ENABLE/DISABLE macros do a blind write to the phy
auxiliary control register and overwrite the EXT_PKT_LEN (bit 14) resulting
in intermittent crc errors on jumbo frames with some link partners. Change
the code to do a read/modify/write.

Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode
Nithin Nayak Sujir [Mon, 14 Jan 2013 17:10:59 +0000 (17:10 +0000)]
tg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode

When netconsole is enabled, logging messages generated during tg3_open
can result in a null pointer dereference for the uninitialized tg3
status block. Use the irq_sync flag to disable polling in the early
stages. irq_sync is cleared when the driver is enabling interrupts after
all initialization is completed.

Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agodrivers/net: delete orphaned MCA ibmlana driver content
Paul Gortmaker [Tue, 15 Jan 2013 02:17:25 +0000 (21:17 -0500)]
drivers/net: delete orphaned MCA ibmlana driver content

In commit a5e371f61ad33c07b28e7c9b60c78d71fdd34e2a ("drivers/net: delete
all code/drivers depending on CONFIG_MCA") most of the MCA drivers went,
including the Kconfig/Makefile hooks for ibmlana, but it seems that I
missed the "git rm" on these actual driver files, and with the namespace
overlap with machine check architecture, it got missed by various git
grep type checking done at that time.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'master' of git://1984.lsi.us.es/nf
David S. Miller [Mon, 14 Jan 2013 23:26:41 +0000 (18:26 -0500)]
Merge branch 'master' of git://1984.lsi.us.es/nf

Pablo Neira Ayuso says:

====================
The following patchset contains netfilter fixes for 3.8-rc3,
they are:

* fix possible BUG_ON if several netns are in use and the nf_conntrack
  module is removed, initial patch from Gao feng, final patch from myself.

* fix unset return value if conntrack zone are disabled at
  compile-time, reported by Borislav Petkov, fix from myself.

* fix display error message via dmesg for arp_tables, from Jan Engelhardt.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotun: fix LSM/SELinux labeling of tun/tap devices
Paul Moore [Mon, 14 Jan 2013 07:12:19 +0000 (07:12 +0000)]
tun: fix LSM/SELinux labeling of tun/tap devices

This patch corrects some problems with LSM/SELinux that were introduced
with the multiqueue patchset.  The problem stems from the fact that the
multiqueue work changed the relationship between the tun device and its
associated socket; before the socket persisted for the life of the
device, however after the multiqueue changes the socket only persisted
for the life of the userspace connection (fd open).  For non-persistent
devices this is not an issue, but for persistent devices this can cause
the tun device to lose its SELinux label.

We correct this problem by adding an opaque LSM security blob to the
tun device struct which allows us to have the LSM security state, e.g.
SELinux labeling information, persist for the lifetime of the tun
device.  In the process we tweak the LSM hooks to work with this new
approach to TUN device/socket labeling and introduce a new LSM hook,
security_tun_dev_attach_queue(), to approve requests to attach to a
TUN queue via TUNSETQUEUE.

The SELinux code has been adjusted to match the new LSM hooks, the
other LSMs do not make use of the LSM TUN controls.  This patch makes
use of the recently added "tun_socket:attach_queue" permission to
restrict access to the TUNSETQUEUE operation.  On older SELinux
policies which do not define the "tun_socket:attach_queue" permission
the access control decision for TUNSETQUEUE will be handled according
to the SELinux policy's unknown permission setting.

Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Eric Paris <eparis@parisplace.org>
Tested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoselinux: add the "attach_queue" permission to the "tun_socket" class
Paul Moore [Mon, 14 Jan 2013 07:12:13 +0000 (07:12 +0000)]
selinux: add the "attach_queue" permission to the "tun_socket" class

Add a new permission to align with the new TUN multiqueue support,
"tun_socket:attach_queue".

The corresponding SELinux reference policy patch is show below:

 diff --git a/policy/flask/access_vectors b/policy/flask/access_vectors
 index 28802c5..a0664a1 100644
 --- a/policy/flask/access_vectors
 +++ b/policy/flask/access_vectors
 @@ -827,6 +827,9 @@ class kernel_service

  class tun_socket
  inherits socket
 +{
 +       attach_queue
 +}

  class x_pointer
  inherits x_device

Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Eric Paris <eparis@parisplace.org>
Tested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: fix a panic on UP machines in reqsk_fastopen_remove
Eric Dumazet [Sun, 13 Jan 2013 18:21:51 +0000 (18:21 +0000)]
tcp: fix a panic on UP machines in reqsk_fastopen_remove

spin_is_locked() on a non !SMP build is kind of useless.

BUG_ON(!spin_is_locked(xx)) is guaranteed to crash.

Just remove this check in reqsk_fastopen_remove() as
the callers do hold the socket lock.

Reported-by: Ketan Kulkarni <ketkulka@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Dave Taht <dave.taht@gmail.com>
Acked-by: H.K. Jerry Chu <hkchu@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux
Linus Torvalds [Mon, 14 Jan 2013 21:19:08 +0000 (13:19 -0800)]
Merge tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux

Pull devicetree fixes from Rob Herring:
 "Two fixes to prevent unconditional re-compile of dts files on arm and
  arm64."

* tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux:
  ARM: dts: prevent *.dtb from always being rebuilt
  arm64: dts: prevent *.dtb from always being rebuilt

11 years agovfs: add missing virtual cache flush after editing partial pages
Linus Torvalds [Mon, 14 Jan 2013 21:17:50 +0000 (13:17 -0800)]
vfs: add missing virtual cache flush after editing partial pages

Andrew Morton pointed this out a month ago, and then I completely forgot
about it.

If we read a partial last page of a block device, we will zero out the
end of the page, but since that page can then be mapped into user space,
we should also make sure to flush the cache on architectures that have
virtual caches.  We have the flush_dcache_page() function for this, so
use it.

Now, in practice this really never matters, because nobody sane uses
virtual caches to begin with, and they largely exist on old broken RISC
arhitectures.

And even if you did run on one of those obsolete CPU's, the whole "mmap
and access the last partial page of a block device" behavior probably
doesn't actually exist.  The normal IO functions (read/write) will never
see the zeroed-out part of the page that migth not be coherent in the
cache, because they honor the size of the device.

So I'm marking this for stable (3.7 only), but I'm not sure anybody will
ever care.

Pointed-out-by: Andrew Morton <akpm@linux-foundation.org>
Cc: stable@vger.kernel.org # 3.7
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoifb: dont hard code inet_net use
Eric Dumazet [Sun, 13 Jan 2013 07:46:34 +0000 (07:46 +0000)]
ifb: dont hard code inet_net use

ifb should lookup devices in the appropriate namespace.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: phy: remove flags argument from phy_{attach, connect, connect_direct}
Florian Fainelli [Mon, 14 Jan 2013 00:52:52 +0000 (00:52 +0000)]
net: phy: remove flags argument from phy_{attach, connect, connect_direct}

The flags argument of the phy_{attach,connect,connect_direct} functions
is then used to assign a struct phy_device dev_flags with its value.
All callers but the tg3 driver pass the flag 0, which results in the
underlying PHY drivers in drivers/net/phy/ not being able to actually
use any of the flags they would set in dev_flags. This patch gets rid of
the flags argument, and passes phydev->dev_flags to the internal PHY
library call phy_attach_direct() such that drivers which actually modify
a phy device dev_flags get the value preserved for use by the underlying
phy driver.

Acked-by: Kosta Zertsekel <konszert@marvell.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agopkt_sched: namespace aware act_mirred
Benjamin LaHaise [Mon, 14 Jan 2013 05:15:39 +0000 (05:15 +0000)]
pkt_sched: namespace aware act_mirred

Eric Dumazet pointed out that act_mirred needs to find the current net_ns,
and struct net pointer is not provided in the call chain.  His original
patch made use of current->nsproxy->net_ns to find the network namespace,
but this fails to work correctly for userspace code that makes use of
netlink sockets in different network namespaces.  Instead, pass the
"struct net *" down along the call chain to where it is needed.

This version removes the ifb changes as Eric has submitted that patch
separately, but is otherwise identical to the previous version.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Tested-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6 netevent: Remove old_neigh from netevent_redirect.
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 09:28:27 +0000 (09:28 +0000)]
ipv6 netevent: Remove old_neigh from netevent_redirect.

The only user is cxgb3 driver.

old_neigh is used to check device change, but it must not happen
on redirect.  In this sense, we can remove old_neigh argument.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Mon, 14 Jan 2013 18:56:05 +0000 (10:56 -0800)]
Merge tag 'sound-3.8' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Most of commits found here are for ASoC device specific fixes,
  arizona, cs4271, wm5102, wm2200, etc, in addition to a couple of
  memory leak fixes in ASoC core.

  Other than that, regression fixes in HD-audio and USB-audio, and a fix
  for new Realtek codecs."

* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (30 commits)
  ALSA: usb-audio: Fix NULL dereference by access to non-existing substream
  ALSA: hda - Add support of new codec ALC284
  ALSA: usb-audio: Make ebox44_table static
  ALSA: hdspm - Fix wordclock status on AES32
  Revert "ALSA: hda - Shut up pins at power-saving mode with Conexnat codecs"
  ALSA: hda - Disable runtime D3 for Intel CPT & co
  ALSA: pxa27x: fix ac97 warm reset
  ALSA: pxa27x: fix ac97 cold reset
  ASoC: wm_adsp: Ensure that block writes are from DMA aligned addresses
  ASoC: wm2000: Fix sense of speech clarity enable
  ASoC: wm5100: Remove DSP B and left justified formats
  ASoC: arizona: Remove DSP B and left justified AIF modes
  ASoC: wm2200: Remove DSP B and left justified AIF modes
  ASoC: wm5102: Improve speaker enable performance
  ASoC: core: fix the memory leak in case of remove_aux_dev()
  ASoC: core: fix the memory leak in case of device_add() failure
  ASoC: cs42l52: Catch no-match case in cs42l52_get_clk
  ASoC: lm49453: Update lm49453_reg_defs values as per LM49453 HW revision-B
  ASoC: lm49453: Fix adc, mic and sidetone volume ranges
  ASoC: arizona: Correct FLL source definitions
  ...

11 years agodrivers/net: Clean up orphaned probes in Space.c
Paul Gortmaker [Sun, 13 Jan 2013 18:55:05 +0000 (18:55 +0000)]
drivers/net: Clean up orphaned probes in Space.c

The removal of the 8390 EISA drivers actually comprises the
complete content of the EISA probe block, so we can now remove
that block, and its hook into the unified probe.  Note that
the deleted comment mentions PCI probes, but they long since
moved elsewhere, so no PCI probes are touched here.

We get rid of the orphaned EISA probe prototypes, and a couple
of left over MCA probe prototypes at the same time.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: 64bit version of ipv6_prefix_equal().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:10:38 +0000 (07:10 +0000)]
ipv6: 64bit version of ipv6_prefix_equal().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Remove __ipv6_prefix_equal().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:10:31 +0000 (07:10 +0000)]
ipv6: Remove __ipv6_prefix_equal().

ipv6_prefix_equal() just casts its arguments and it is the only
user of __ipv6_prefix_equal().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: 64bit version of ipv6_addr_set().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:10:24 +0000 (07:10 +0000)]
ipv6: 64bit version of ipv6_addr_set().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: 64bit version of ipv6_addr_v4mapped().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:10:14 +0000 (07:10 +0000)]
ipv6: 64bit version of ipv6_addr_v4mapped().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: 64bit version of ipv6_addr_loopback().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:10:06 +0000 (07:10 +0000)]
ipv6: 64bit version of ipv6_addr_loopback().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: 64bit version of ipv6_addr_diff().
YOSHIFUJI Hideaki / 吉藤英明 [Mon, 14 Jan 2013 07:09:54 +0000 (07:09 +0000)]
ipv6: 64bit version of ipv6_addr_diff().

Introduce __ipv6_addr_diff64() to to find the first different
bit between two addresses on 64bit architectures.

32bit version is still available as __ipv6_addr_diff32(),
and __ipv6_addr_diff() automatically selects appropriate
version.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Mon, 14 Jan 2013 17:08:38 +0000 (09:08 -0800)]
Merge tag 'staging-3.8-rc3' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg Kroah-Hartman:
 "Here are a number of small fixes to staging drivers for your 3.8-rc3
  tree.

  Well, the omapdrm fixes aren't really "small" but they were waiting on
  a number of other drm patches to go in through the drm tree, and got
  delayed by my vacation over the holidays.  They are totally
  self-contained, everyone involved have acked them, and they fix issues
  that people have been having with the driver.

  Other than that one, it's a bunch of tiny bugfixes for a number of
  reported issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (36 commits)
  staging: zram: fix invalid memory references during disk write
  staging: tidspbridge: use prepare/unprepare on dsp clocks
  staging: tidspbridge: Fix build breakage due to splitting CM functions.
  staging: comedi: comedi_test: fix race when cancelling command
  staging: comedi: Kconfig: COMEDI_NI_AT_A2150 should select COMEDI_FC
  staging: comedi: prevent auto-unconfig of manually configured devices
  staging: comedi: fix minimum AO period for NI 625x and NI 628x
  staging: vme_pio2: fix oops on module unloading
  staging: speakup: avoid out-of-range access in synth_add()
  staging: speakup: avoid out-of-range access in synth_init()
  staging: rtl8192e: Fix failure to check pci_map_single()
  staging: rtl8187se: Fix failure to check pci_map_single()
  staging: drm/imx: fix double free bug in error path
  staging: drm/imx: several bug fixes
  staging: drm/imx: check return value of ipu_reset()
  staging: drm/omap: fix flags in dma buf exporting
  staging: drm/omap: use omapdss low level API
  staging/fwserial: Update TODO file per reviewer comments
  staging/fwserial: Limit tx/rx to 1394-2008 spec maximum
  staging/fwserial: Refine Kconfig help text
  ...

11 years agoMerge tag 'usb-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Mon, 14 Jan 2013 17:07:57 +0000 (09:07 -0800)]
Merge tag 'usb-3.8-rc3' of git://git./linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are a bunch of USB fixes for your 3.8-rc3 tree.  They all either
  fix problems that have been reported (like the xhci/hub changes) or
  add new device ids to existing drivers.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'usb-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (39 commits)
  usb: ftdi_sio: Crucible Technologies COMET Caller ID - pid added
  usb: host: ohci-tmio: fix compile warning
  USB: Add device quirk for Microsoft VX700 webcam
  USB: ehci-fsl: fix regression on mpc5121e
  usb: chipidea: Allow disabling streaming not only in udc mode
  USB: fsl-mph-dr-of: fix regression on mpc5121e
  USB: select USB_ARCH_HAS_EHCI for MXS
  USB: hub: handle claim of enabled remote wakeup after reset
  USB: cdc-acm: Add support for "PSC Scanning, Magellan 800i"
  USB: option: add Nexpring NP10T terminal id
  USB: option: add Telekom Speedstick LTE II
  USB: option: blacklist network interface on ZTE MF880
  usb: imx21-hcd: Include missing linux/module.h
  USB: option: Add new MEDIATEK PID support
  USB: ehci: make debug port in-use detection functional again
  USB: usbtest: fix test number in log message
  xhci: Avoid "dead ports", add roothub port polling.
  USB: Handle warm reset failure on empty port.
  USB: Ignore port state until reset completes.
  USB: Increase reset timeout.
  ...

11 years agoMerge tag 'driver-core-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 14 Jan 2013 17:07:11 +0000 (09:07 -0800)]
Merge tag 'driver-core-3.8-rc3' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg Kroah-Hartman:
 "Here are two patches for 3.8-rc3.

  One removes the __dev* defines from init.h now that all usages of it
  are gone from your tree.  The other fix is for debugfs's paramater
  that was using the wrong base for the option.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  debugfs: convert gid= argument from decimal, not octal
  Remove __dev* markings from init.h

11 years agoMerge tag 'char-misc-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Mon, 14 Jan 2013 17:06:24 +0000 (09:06 -0800)]
Merge tag 'char-misc-3.8-rc3' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg Kroah-Hartman:
 "Here is a single fix for the mei driver that resolves a reported
  issue.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'char-misc-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: fix mismatch in mutex unlock-lock in mei_amthif_read()

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Mon, 14 Jan 2013 16:56:31 +0000 (08:56 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Nothing too astounding

   - nouveau: bunch of regression fixes and oops fixes
   - radeon: UMS fixes, rn50 fix, dma fix
   - udl: fix EDID retrieval for large EDIDs."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  udldrmfb: udl_get_edid: drop unneeded i--
  udldrmfb: udl_get_edid: usb_control_msg buffer must not be on the stack
  udldrmfb: Fix EDID not working with monitors with EDID extension blocks
  drm/nvc0/fb: fix crash when different mutex is used to protect same list
  drm/nouveau/clock: fix support for more than 2 monitors on nve0
  drm/nv50/disp: fix selection of bios script for analog outputs
  drm/nv17-50: restore fence buffer on resume
  drm/nouveau: fix blank LVDS screen regression on pre-nv50 cards
  drm/nouveau: fix nouveau_client allocation failure path
  drm/nouveau: don't return freed object from nouveau_handle_create
  drm/nouveau/vm: fix memory corruption when pgt allocation fails
  drm/nouveau: add locking around instobj list operations
  drm/nouveau: do not forcibly power on lvds panels
  drm/nouveau/devinit: ensure legacy vga control is enabled during post
  radeon/kms: fix dma relocation checking
  radeon/kms: force rn50 chip to always report connected on analog output
  drm/radeon: fix error path in kpage allocation
  drm/radeon: fix a bogus kfree
  drm/radeon: fix NULL pointer dereference in UMS mode

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 14 Jan 2013 16:27:10 +0000 (08:27 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix regression allowing IP_TTL setting of zero, fix from Cong Wang.

 2) Fix leak regressions in tunap, from Jason Wang.

 3) be2net driver always returns IRQ_HANDLED in INTx handler, fix from
    Sathya Perla.

 4) qlge doesn't really support NETIF_F_TSO6, don't set that flag.  Fix
    from Amerigo Wang.

 5) Add 802.11ad Atheros wil6210 driver, from Vladimir Kondratiev.

 6) Fix MTU calculations in mac80211 layer, from T Krishna Chaitanya.

 7) Station info layer of mac80211 needs to use del_timer_sync(), from
    Johannes Berg.

 8) tcp_read_sock() can loop forever, because we don't immediately stop
    when recv_actor() returns zero.  Fix from Eric Dumazet.

 9) Fix WARN_ON() in tcp_cleanup_rbuf().  We have to use sk_eat_skb() in
    tcp_recv_skb() to handle the case where a large GRO packet is split
    up while it is use by a splice() operation.  Fix also from Eric
    Dumazet.

10) addrconf_get_prefix_route() in ipv6 tests flags incorrectly, it
    does:

        if (X && (p->flags & Y) != 0)

    when it really meant to go:

        if (X && (p->flags & X) != 0)

    fix from Romain Kuntz.

11) Fix lost Kconfig dependency for bfin_mac driver hardware
    timestamping.  From Lars-Peter Clausen.

12) Fix regression in handling of RST without ACK in TCP, from Eric
    Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (37 commits)
  be2net: fix unconditionally returning IRQ_HANDLED in INTx
  tuntap: fix leaking reference count
  tuntap: forbid calling TUNSETIFF when detached
  tuntap: switch to use rtnl_dereference()
  net, wireless: overwrite default_ethtool_ops
  qlge: remove NETIF_F_TSO6 flag
  tcp: accept RST without ACK flag
  net: ethernet: xilinx: Do not use NO_IRQ in axienet
  net: ethernet: xilinx: Do not use axienet on PPC
  bnx2x: Allow management traffic after boot from SAN
  bnx2x: Fix fastpath structures when memory allocation fails
  bfin_mac: Restore hardware time-stamping dependency on BF518
  tun: avoid owner checks on IFF_ATTACH_QUEUE
  bnx2x: move debugging code before the return
  tuntap: refuse to re-attach to different tun_struct
  ipv6: use addrconf_get_prefix_route for prefix route lookup [v2]
  ipv6: fix the noflags test in addrconf_get_prefix_route
  tcp: fix splice() and tcp collapsing interaction
  tcp: splice: fix an infinite loop in tcp_read_sock()
  net: prevent setting ttl=0 via IP_TTL
  ...