openwrt/staging/blogic.git
10 years agoAltera TSE: Add Altera Ethernet Driver SGDMA file components
Vince Bridgers [Mon, 17 Mar 2014 22:52:36 +0000 (17:52 -0500)]
Altera TSE: Add Altera Ethernet Driver SGDMA file components

This patch adds the SGDMA soft IP support for the Altera Triple
Speed Ethernet driver.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoAltera TSE: Add Altera Ethernet Driver MSGDMA File Components
Vince Bridgers [Mon, 17 Mar 2014 22:52:35 +0000 (17:52 -0500)]
Altera TSE: Add Altera Ethernet Driver MSGDMA File Components

This patch adds the MSGDMA soft IP support for the Altera Triple
Speed Ethernet driver.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoDocumentation: networking: Add Altera Ethernet (TSE) Documentation
Vince Bridgers [Mon, 17 Mar 2014 22:52:34 +0000 (17:52 -0500)]
Documentation: networking: Add Altera Ethernet (TSE) Documentation

This patch adds a bindings description for the Altera Triple Speed Ethernet
(TSE) driver. The bindings support the legacy SGDMA soft IP as well as the
preferred MSGDMA soft IP. The TSE can be configured and synthesized in soft
logic using Altera's Quartus toolchain. Please consult the bindings document
for supported options.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agodts: Add bindings for the Altera Triple Speed Ethernet driver
Vince Bridgers [Mon, 17 Mar 2014 22:52:33 +0000 (17:52 -0500)]
dts: Add bindings for the Altera Triple Speed Ethernet driver

This patch adds a bindings description for the Altera Triple Speed Ethernet
(TSE) driver. The bindings support the legacy SGDMA soft IP as well as the
preferred MSGDMA soft IP. The TSE can be configured and synthesized in soft
logic using Altera's Quartus toolchain. Please consult the bindings document
for supported options.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetfilter: conntrack: Fix UP builds
Eric Dumazet [Mon, 17 Mar 2014 20:37:53 +0000 (13:37 -0700)]
netfilter: conntrack: Fix UP builds

ARRAY_SIZE(nf_conntrack_locks) is undefined if spinlock_t is an
empty structure. Replace it by CONNTRACK_LOCKS

Fixes: 93bb0ceb75be ("netfilter: conntrack: remove central spinlock nf_conntrack_lock")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'at86rf230'
David S. Miller [Mon, 17 Mar 2014 20:10:43 +0000 (16:10 -0400)]
Merge branch 'at86rf230'

Alexander Aring says:

====================
at86rf230: various fixes and devicetree support

this patch series fix some bugs with the at86rf231 chip and cleaup some code.
Also add devicetree support for the at86rf230 driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: add support for devicetree
Alexander Aring [Sat, 15 Mar 2014 08:29:07 +0000 (09:29 +0100)]
at86rf230: add support for devicetree

This patch adds devicetree support for the at86rf230 driver.

Possible gpios to configure are "reset-gpio" and "sleep-gpio".
Also add support to configure the "irq-type" for the irq polarity
register.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: make reset pin optionally
Alexander Aring [Sat, 15 Mar 2014 08:29:06 +0000 (09:29 +0100)]
at86rf230: make reset pin optionally

This patch make the reset pin optionally. Some devices like the atben
from qi-hardware don't have a reset pin externally. The usually way is
to turn power off/on for the atben device to initiate a device reset.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: change reset timings
Alexander Aring [Sat, 15 Mar 2014 08:29:05 +0000 (09:29 +0100)]
at86rf230: change reset timings

While checkpatch another patch I got a:

"WARNING: msleep < 20ms can sleep for up to 20ms"

The datasheet of at86rf231 and at86rf212 says a minimum delay for reset
pulse width and spi access latency after reset is 625 nanoseconds.

This patch removes the 1 milliseconds sleep and replace it with a 1
microseconds udelay which should be also okay for the reset pulse width.

To change the state from RESET -> TRX_OFF the at86rf230 device needs 120
microseconds, this is a worst case of all at86rf* chips.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: move locking state in xmit
Alexander Aring [Sat, 15 Mar 2014 08:29:04 +0000 (09:29 +0100)]
at86rf230: move locking state in xmit

There is no need to lock the clearing of IRQ_TRX_END in status.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: fix unexpected state change
Alexander Aring [Sat, 15 Mar 2014 08:29:03 +0000 (09:29 +0100)]
at86rf230: fix unexpected state change

This patch fix a unexpected state change for the at86rf231 chip.
We can't change into STATE_FORCE_TX_ON while the chip is in one of
SLEEP, P_ON, RESET, TRX_OFF, and all *_NOCLK states.

In this case we are in the TRX_OFF state. See datasheet [1] page 71 for
more information.

Without this patch you will get the following message on a at86rf231 device:

[   20.065218] unexpected state change: 8, asked for 4
[   20.070527] ------------[ cut here ]------------
[   20.075414] WARNING: CPU: 0 PID: 160 at net/mac802154/ieee802154_dev.c:43 mac802154_slave_open+0x70/0xb8()
[   20.085594] Modules linked in: autofs4
[   20.089667] CPU: 0 PID: 160 Comm: ifconfig Not tainted 3.14.0-20140108-1-00993-g905c192 #162
[   20.098612] [<c00127b8>] (unwind_backtrace) from [<c0010b1c>] (show_stack+0x10/0x14)
[   20.106819] [<c0010b1c>] (show_stack) from [<c0033838>] (warn_slowpath_common+0x60/0x80)
[   20.115311] [<c0033838>] (warn_slowpath_common) from [<c00338e8>] (warn_slowpath_null+0x18/0x20)
[   20.124590] [<c00338e8>] (warn_slowpath_null) from [<c057b7e8>] (mac802154_slave_open+0x70/0xb8)
[   20.133880] [<c057b7e8>] (mac802154_slave_open) from [<c0488a58>] (__dev_open+0xa8/0x108)
[   20.142553] [<c0488a58>] (__dev_open) from [<c0488cb0>] (__dev_change_flags+0x8c/0x148)
[   20.151051] [<c0488cb0>] (__dev_change_flags) from [<c0488d84>] (dev_change_flags+0x18/0x48)
[   20.159968] [<c0488d84>] (dev_change_flags) from [<c04e2e9c>] (devinet_ioctl+0x2b0/0x63c)
[   20.168623] [<c04e2e9c>] (devinet_ioctl) from [<c04712e4>] (sock_ioctl+0x23c/0x29c)
[   20.176727] [<c04712e4>] (sock_ioctl) from [<c00e3cb8>] (do_vfs_ioctl+0x4a8/0x578)
[   20.184671] [<c00e3cb8>] (do_vfs_ioctl) from [<c00e3dd4>] (SyS_ioctl+0x4c/0x78)
[   20.192402] [<c00e3dd4>] (SyS_ioctl) from [<c000da00>] (ret_fast_syscall+0x0/0x48)
[   20.200392] ---[ end trace 9a34542f4ea08e47 ]---

This patch was tested on at86rf231 and at86rf212.

[1] http://www.atmel.com/images/doc8111.pdf

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'sh_eth'
David S. Miller [Mon, 17 Mar 2014 20:06:48 +0000 (16:06 -0400)]
Merge branch 'sh_eth'

Sergei Shtylyov says:

====================
Beautify 'sh_eth' driver's messages

This patchset converts te driver to using netdev_*() and netif_*() to print out
its messages whenever possible.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: fold netif_msg_*() and netdev_*() calls into netif_*() invocations
Sergei Shtylyov [Sat, 15 Mar 2014 00:30:59 +0000 (03:30 +0300)]
sh_eth: fold netif_msg_*() and netdev_*() calls into netif_*() invocations

Now that we call netdev_*() under netif_msg_*() checks, we can fold these into
netif_*() macro invocations.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: convert dev_*() to netdev_*() calls
Sergei Shtylyov [Sat, 15 Mar 2014 00:29:14 +0000 (03:29 +0300)]
sh_eth: convert dev_*() to netdev_*() calls

Convert dev_*(&ndev->dev, ...) to netdev_*(ndev, ...) calls since they are a bit
shorter and at the same time give more information on a device.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: convert pr_*() to netdev_*() calls
Sergei Shtylyov [Sat, 15 Mar 2014 00:27:54 +0000 (03:27 +0300)]
sh_eth: convert pr_*() to netdev_*() calls

Convert pr_*() to netdev_*() calls as the latter provide info on a device.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: exit probe with unknown register layout
Sergei Shtylyov [Sat, 15 Mar 2014 00:11:24 +0000 (03:11 +0300)]
sh_eth: exit probe with unknown register layout

Exit the driver's probe() method when the register layout is unknown as the
driver would cause kernel oops in this case anyway.

While at it, move the corresponding error message printout and convert it from
pr_err() to dev_err().

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'netpoll-next'
David S. Miller [Mon, 17 Mar 2014 19:48:53 +0000 (15:48 -0400)]
Merge branch 'netpoll-next'

Eric W. Biederman says:

====================
netpoll: Cleanup received packet processing

This is the long-winded, careful, and polite version of removing the netpoll
receive packet processing.

First I untangle the code in small steps.  Then I modify the code to not
force reception and dropping of packets when we are transmiting a packet
with netpoll.  Finally I move all of the packet reception under
CONFIG_NETPOLL_TRAP and delete CONFIG_NETPOLL_TRAP.

If someone wants to do a stable backport of these patches, it would
require backporting the first 18 patches that handle the budget == 0 in
the networking drivers, and the first 6 of these patches.

If anyone wants to resurrect netpoll packet reception someday it should
just be a matter of reverting the last patch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Remove dead packet receive code (CONFIG_NETPOLL_TRAP)
Eric W. Biederman [Sat, 15 Mar 2014 03:51:52 +0000 (20:51 -0700)]
netpoll: Remove dead packet receive code (CONFIG_NETPOLL_TRAP)

The netpoll packet receive code only becomes active if the netpoll
rx_skb_hook is implemented, and there is not a single implementation
of the netpoll rx_skb_hook in the kernel.

All of the out of tree implementations I have found all call
netpoll_poll which was removed from the kernel in 2011, so this
change should not add any additional breakage.

There are problems with the netpoll packet receive code.  __netpoll_rx
does not call dev_kfree_skb_irq or dev_kfree_skb_any in hard irq
context.  netpoll_neigh_reply leaks every skb it receives.  Reception
of packets does not work successfully on stacked devices (aka bonding,
team, bridge, and vlans).

Given that the netpoll packet receive code is buggy, there are no
out of tree users that will be merged soon, and the code has
not been used for in tree for a decade let's just remove it.

Reverting this commit can server as a starting point for anyone
who wants to resurrect netpoll packet reception support.

Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Move all receive processing under CONFIG_NETPOLL_TRAP
Eric W. Biederman [Sat, 15 Mar 2014 03:50:58 +0000 (20:50 -0700)]
netpoll: Move all receive processing under CONFIG_NETPOLL_TRAP

Make rx_skb_hook, and rx in struct netpoll depend on
CONFIG_NETPOLL_TRAP Make rx_lock, rx_np, and neigh_tx in struct
netpoll_info depend on CONFIG_NETPOLL_TRAP

Make the functions netpoll_rx_on, netpoll_rx, and netpoll_receive_skb
no-ops when CONFIG_NETPOLL_TRAP is not set.

Only build netpoll_neigh_reply, checksum_udp service_neigh_queue,
pkt_is_ns, and __netpoll_rx when CONFIG_NETPOLL_TRAP is defined.

Add helper functions netpoll_trap_setup, netpoll_trap_setup_info,
netpoll_trap_cleanup, and netpoll_trap_cleanup_info that initialize
and cleanup the struct netpoll and struct netpoll_info receive
specific fields when CONFIG_NETPOLL_TRAP is enabled and do nothing
otherwise.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Consolidate neigh_tx processing in service_neigh_queue
Eric W. Biederman [Sat, 15 Mar 2014 03:50:25 +0000 (20:50 -0700)]
netpoll: Consolidate neigh_tx processing in service_neigh_queue

Move the bond slave device neigh_tx handling into service_neigh_queue.

In connection with neigh_tx processing remove unnecessary tests of
a NULL netpoll_info.  As the netpoll_poll_dev has already used
and thus verified the existince of the netpoll_info.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Move netpoll_trap under CONFIG_NETPOLL_TRAP
Eric W. Biederman [Sat, 15 Mar 2014 03:49:43 +0000 (20:49 -0700)]
netpoll: Move netpoll_trap under CONFIG_NETPOLL_TRAP

Now that we no longer need to receive packets to safely drain the
network drivers receive queue move netpoll_trap and netpoll_set_trap
under CONFIG_NETPOLL_TRAP

Making netpoll_trap and netpoll_set_trap noop inline functions
when CONFIG_NETPOLL_TRAP is not set.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Don't drop all received packets.
Eric W. Biederman [Sat, 15 Mar 2014 03:48:28 +0000 (20:48 -0700)]
netpoll: Don't drop all received packets.

Change the strategy of netpoll from dropping all packets received
during netpoll_poll_dev to calling napi poll with a budget of 0
(to avoid processing drivers rx queue), and to ignore packets received
with netif_rx (those will safely be placed on the backlog queue).

All of the netpoll supporting drivers have been reviewed to ensure
either thay use netif_rx or that a budget of 0 is supported by their
napi poll routine and that a budget of 0 will not process the drivers
rx queues.

Not dropping packets makes NETPOLL_RX_DROP unnecesary so it is removed.

npinfo->rx_flags is removed  as rx_flags with just the NETPOLL_RX_ENABLED
flag becomes just a redundant mirror of list_empty(&npinfo->rx_np).

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Add netpoll_rx_processing
Eric W. Biederman [Sat, 15 Mar 2014 03:47:49 +0000 (20:47 -0700)]
netpoll: Add netpoll_rx_processing

Add a helper netpoll_rx_processing that reports when netpoll has
receive side processing to perform.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Warn if more packets are processed than are budgeted
Eric W. Biederman [Sat, 15 Mar 2014 03:47:15 +0000 (20:47 -0700)]
netpoll: Warn if more packets are processed than are budgeted

There is already a warning for this case in the normal netpoll path,
but put a copy here in case how netpoll calls the poll functions
causes a differenet result.

netpoll will shortly call the napi poll routine with a budget 0 to
avoid any rx packets being processed.  As nothing does that today
we may encounter drivers that have problems so a netpoll specific
warning seems desirable.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Visit all napi handlers in poll_napi
Eric W. Biederman [Sat, 15 Mar 2014 03:45:51 +0000 (20:45 -0700)]
netpoll: Visit all napi handlers in poll_napi

In poll_napi loop through all of the napi handlers even when the
budget falls to 0 to ensure that we process all of the tx_queues, and
so that we continue to call into drivers when our initial budget is 0.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: Pass budget into poll_napi
Eric W. Biederman [Sat, 15 Mar 2014 03:45:17 +0000 (20:45 -0700)]
netpoll: Pass budget into poll_napi

This moves the control logic to the top level in netpoll_poll_dev
instead of having it dispersed throughout netpoll_poll_dev,
poll_napi and poll_one_napi.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetpoll: move setting of NETPOLL_RX_DROP into netpoll_poll_dev
Eric W. Biederman [Sat, 15 Mar 2014 03:44:37 +0000 (20:44 -0700)]
netpoll: move setting of NETPOLL_RX_DROP into netpoll_poll_dev

Today netpoll depends on setting NETPOLL_RX_DROP before networking
drivers receive packets in interrupt context so that the packets can
be dropped.  Move this setting into netpoll_poll_dev from
poll_one_napi so that if ndo_poll_controller happens to receive
packets we will drop the packets on the floor instead of letting the
packets bounce through the networking stack and potentially cause problems.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
David S. Miller [Mon, 17 Mar 2014 19:06:24 +0000 (15:06 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

The following patchset contains Netfilter/IPVS updates for net-next,
most relevantly they are:

* cleanup to remove double semicolon from stephen hemminger.

* calm down sparse warning in xt_ipcomp, from Fan Du.

* nf_ct_labels support for nf_tables, from Florian Westphal.

* new macros to simplify rcu dereferences in the scope of nfnetlink
  and nf_tables, from Patrick McHardy.

* Accept queue and drop (including reason for drop) to verdict
  parsing in nf_tables, also from Patrick.

* Remove unused random seed initialization in nfnetlink_log, from
  Florian Westphal.

* Allow to attach user-specific information to nf_tables rules, useful
  to attach user comments to rule, from me.

* Return errors in ipset according to the manpage documentation, from
  Jozsef Kadlecsik.

* Fix coccinelle warnings related to incorrect bool type usage for ipset,
  from Fengguang Wu.

* Add hash:ip,mark set type to ipset, from Vytas Dauksa.

* Fix message for each spotted by ipset for each netns that is created,
  from Ilia Mirkin.

* Add forceadd option to ipset, which evicts a random entry from the set
  if it becomes full, from Josh Hunt.

* Minor IPVS cleanups and fixes from Andi Kleen and Tingwei Liu.

* Improve conntrack scalability by removing a central spinlock, original
  work from Eric Dumazet. Jesper Dangaard Brouer took them over to address
  remaining issues. Several patches to prepare this change come in first
  place.

* Rework nft_hash to resolve bugs (leaking chain, missing rcu synchronization
  on element removal, etc. from Patrick McHardy.

* Restore context in the rule deletion path, as we now release rule objects
  synchronously, from Patrick McHardy. This gets back event notification for
  anonymous sets.

* Fix NAT family validation in nft_nat, also from Patrick.

* Improve scalability of xt_connlimit by using an array of spinlocks and
  by introducing a rb-tree of hashtables for faster lookup of accounted
  objects per network. This patch was preceded by several patches and
  refactorizations to accomodate this change including the use of kmem_cache,
  from Florian Westphal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonetfilter: connlimit: use rbtree for per-host conntrack obj storage
Florian Westphal [Wed, 12 Mar 2014 22:49:51 +0000 (23:49 +0100)]
netfilter: connlimit: use rbtree for per-host conntrack obj storage

With current match design every invocation of the connlimit_match
function means we have to perform (number_of_conntracks % 256) lookups
in the conntrack table [ to perform GC/delete stale entries ].
This is also the reason why ____nf_conntrack_find() in perf top has
> 20% cpu time per core.

This patch changes the storage to rbtree which cuts down the number of
ct objects that need testing.

When looking up a new tuple, we only test the connections of the host
objects we visit while searching for the wanted host/network (or
the leaf we need to insert at).

The slot count is reduced to 32.  Increasing slot count doesn't
speed up things much because of rbtree nature.

before patch (50kpps rx, 10kpps tx):
+  20.95%  ksoftirqd/0  [nf_conntrack] [k] ____nf_conntrack_find
+  20.50%  ksoftirqd/1  [nf_conntrack] [k] ____nf_conntrack_find
+  20.27%  ksoftirqd/2  [nf_conntrack] [k] ____nf_conntrack_find
+   5.76%  ksoftirqd/1  [nf_conntrack] [k] hash_conntrack_raw
+   5.39%  ksoftirqd/2  [nf_conntrack] [k] hash_conntrack_raw
+   5.35%  ksoftirqd/0  [nf_conntrack] [k] hash_conntrack_raw

after (90kpps, 51kpps tx):
+  17.24%       swapper  [nf_conntrack]    [k] ____nf_conntrack_find
+   6.60%   ksoftirqd/2  [nf_conntrack]    [k] ____nf_conntrack_find
+   2.73%       swapper  [nf_conntrack]    [k] hash_conntrack_raw
+   2.36%       swapper  [xt_connlimit]    [k] count_tree

Obvious disadvantages to previous version are the increase in code
complexity and the increased memory cost.

Partially based on Eric Dumazets fq scheduler.

Reviewed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
10 years agonetfilter: connlimit: make same_source_net signed
Florian Westphal [Wed, 12 Mar 2014 22:49:50 +0000 (23:49 +0100)]
netfilter: connlimit: make same_source_net signed

currently returns 1 if they're the same.  Make it work like mem/strcmp
so it can be used as rbtree search function.

Reviewed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
10 years agonetfilter: connlimit: use keyed locks
Florian Westphal [Wed, 12 Mar 2014 22:49:49 +0000 (23:49 +0100)]
netfilter: connlimit: use keyed locks

connlimit currently suffers from spinlock contention, example for
4-core system with rps enabled:

+  20.84%   ksoftirqd/2  [kernel.kallsyms] [k] _raw_spin_lock_bh
+  20.76%   ksoftirqd/1  [kernel.kallsyms] [k] _raw_spin_lock_bh
+  20.42%   ksoftirqd/0  [kernel.kallsyms] [k] _raw_spin_lock_bh
+   6.07%   ksoftirqd/2  [nf_conntrack]    [k] ____nf_conntrack_find
+   6.07%   ksoftirqd/1  [nf_conntrack]    [k] ____nf_conntrack_find
+   5.97%   ksoftirqd/0  [nf_conntrack]    [k] ____nf_conntrack_find
+   2.47%   ksoftirqd/2  [nf_conntrack]    [k] hash_conntrack_raw
+   2.45%   ksoftirqd/0  [nf_conntrack]    [k] hash_conntrack_raw
+   2.44%   ksoftirqd/1  [nf_conntrack]    [k] hash_conntrack_raw

May allow parallel lookup/insert/delete if the entry is hashed to
another slot.  With patch:

+  20.95%  ksoftirqd/0  [nf_conntrack] [k] ____nf_conntrack_find
+  20.50%  ksoftirqd/1  [nf_conntrack] [k] ____nf_conntrack_find
+  20.27%  ksoftirqd/2  [nf_conntrack] [k] ____nf_conntrack_find
+   5.76%  ksoftirqd/1  [nf_conntrack] [k] hash_conntrack_raw
+   5.39%  ksoftirqd/2  [nf_conntrack] [k] hash_conntrack_raw
+   5.35%  ksoftirqd/0  [nf_conntrack] [k] hash_conntrack_raw
+   2.00%  ksoftirqd/1  [kernel.kallsyms] [k] __rcu_read_unlock

Improved rx processing rate from ~35kpps to ~50 kpps.

Reviewed-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
10 years agoMerge branch 'napi_budget_zero'
David S. Miller [Sat, 15 Mar 2014 02:53:35 +0000 (22:53 -0400)]
Merge branch 'napi_budget_zero'

Eric W. Biederman says:

====================
Don't receive packets when the napi budget == 0

After reading through all 120 drivers supporting netpoll I have found 16
more that process at least received packet when the napi budget == 0.

Processing more packets than your budget has always been a bug but
we haven't cared before so it looks like these drivers slipped through,
and need fixes.

As netpoll will shortly be using a budget of 0 to get the tx queue
processing with the rx queue processing we now care.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosfc: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:11:22 +0000 (18:11 -0700)]
sfc: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agovxge: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:10:50 +0000 (18:10 -0700)]
vxge: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotc35815: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:10:14 +0000 (18:10 -0700)]
tc35815: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotilepro: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:09:01 +0000 (18:09 -0700)]
tilepro: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agotilegx: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:08:21 +0000 (18:08 -0700)]
tilegx: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agos2io: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:06:26 +0000 (18:06 -0700)]
s2io: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomlx4: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:05:58 +0000 (18:05 -0700)]
mlx4: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosky2: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:05:26 +0000 (18:05 -0700)]
sky2: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoibmveth: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:03:50 +0000 (18:03 -0700)]
ibmveth: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agofs_enet: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:03:23 +0000 (18:03 -0700)]
fs_enet: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoenic: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:02:08 +0000 (18:02 -0700)]
enic: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoamd8111e: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:01:11 +0000 (18:01 -0700)]
amd8111e: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoixgbe: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:00:41 +0000 (18:00 -0700)]
ixgbe: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoigb: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 01:00:06 +0000 (18:00 -0700)]
igb: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoi40e: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 00:59:10 +0000 (17:59 -0700)]
i40e: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobnx2x: Don't receive packets when the napi budget == 0
Eric W. Biederman [Sat, 15 Mar 2014 00:57:59 +0000 (17:57 -0700)]
bnx2x: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'cxgb4-next'
David S. Miller [Sat, 15 Mar 2014 02:44:19 +0000 (22:44 -0400)]
Merge branch 'cxgb4-next'

Hariprasad Shenai says:

====================
Doorbell drop Avoidance Bug fix for iw_cxgb4

This patch series provides fixes for Chelsio T4/T5 adapters
related to DB Drop avoidance and other small fix related to keepalive on
iw-cxgb4.

The patches series is created against David Miller's 'net-next' tree.
And includes patches on cxgb4 and iw_cxgb4 driver.

We would like to request this patch series to get merged via David Miller's
'net-next' tree.

We have included all the maintainers of respective drivers. Kindly review the
change and let us know in case of any review comments.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4/iw_cxgb4: Doorbell Drop Avoidance Bug Fixes
Steve Wise [Fri, 14 Mar 2014 16:22:08 +0000 (21:52 +0530)]
cxgb4/iw_cxgb4: Doorbell Drop Avoidance Bug Fixes

The current logic suffers from a slow response time to disable user DB
usage, and also fails to avoid DB FIFO drops under heavy load. This commit
fixes these deficiencies and makes the avoidance logic more optimal.
This is done by more efficiently notifying the ULDs of potential DB
problems, and implements a smoother flow control algorithm in iw_cxgb4,
which is the ULD that puts the most load on the DB fifo.

Design:

cxgb4:

Direct ULD callback from the DB FULL/DROP interrupt handler.  This allows
the ULD to stop doing user DB writes as quickly as possible.

While user DB usage is disabled, the LLD will accumulate DB write events
for its queues.  Then once DB usage is reenabled, a single DB write is
done for each queue with its accumulated write count.  This reduces the
load put on the DB fifo when reenabling.

iw_cxgb4:

Instead of marking each qp to indicate DB writes are disabled, we create
a device-global status page that each user process maps.  This allows
iw_cxgb4 to only set this single bit to disable all DB writes for all
user QPs vs traversing the idr of all the active QPs.  If the libcxgb4
doesn't support this, then we fall back to the old approach of marking
each QP.  Thus we allow the new driver to work with an older libcxgb4.

When the LLD upcalls iw_cxgb4 indicating DB FULL, we disable all DB writes
via the status page and transition the DB state to STOPPED.  As user
processes see that DB writes are disabled, they call into iw_cxgb4
to submit their DB write events.  Since the DB state is in STOPPED,
the QP trying to write gets enqueued on a new DB "flow control" list.
As subsequent DB writes are submitted for this flow controlled QP, the
amount of writes are accumulated for each QP on the flow control list.
So all the user QPs that are actively ringing the DB get put on this
list and the number of writes they request are accumulated.

When the LLD upcalls iw_cxgb4 indicating DB EMPTY, which is in a workq
context, we change the DB state to FLOW_CONTROL, and begin resuming all
the QPs that are on the flow control list.  This logic runs on until
the flow control list is empty or we exit FLOW_CONTROL mode (due to
a DB DROP upcall, for example).  QPs are removed from this list, and
their accumulated DB write counts written to the DB FIFO.  Sets of QPs,
called chunks in the code, are removed at one time. The chunk size is 64.
So 64 QPs are resumed at a time, and before the next chunk is resumed, the
logic waits (blocks) for the DB FIFO to drain.  This prevents resuming to
quickly and overflowing the FIFO.  Once the flow control list is empty,
the db state transitions back to NORMAL and user QPs are again allowed
to write directly to the user DB register.

The algorithm is designed such that if the DB write load is high enough,
then all the DB writes get submitted by the kernel using this flow
controlled approach to avoid DB drops.  As the load lightens though, we
resume to normal DB writes directly by user applications.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agocxgb4/iw_cxgb4: Treat CPL_ERR_KEEPALV_NEG_ADVICE as negative advice
Steve Wise [Fri, 14 Mar 2014 16:22:07 +0000 (21:52 +0530)]
cxgb4/iw_cxgb4: Treat CPL_ERR_KEEPALV_NEG_ADVICE as negative advice

Based on original work by Anand Priyadarshee <anandp@chelsio.com>.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq
Eric W. Biederman [Fri, 14 Mar 2014 04:26:42 +0000 (21:26 -0700)]
net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq

Replace the bh safe variant with the hard irq safe variant.

We need a hard irq safe variant to deal with netpoll transmitting
packets from hard irq context, and we need it in most if not all of
the places using the bh safe variant.

Except on 32bit uni-processor the code is exactly the same so don't
bother with a bh variant, just have a hard irq safe variant that
everyone can use.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Sat, 15 Mar 2014 02:31:55 +0000 (22:31 -0400)]
Merge git://git./linux/kernel/git/davem/net

Conflicts:
drivers/net/usb/r8152.c
drivers/net/xen-netback/netback.c

Both the r8152 and netback conflicts were simple overlapping
changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'alb_learning'
David S. Miller [Sat, 15 Mar 2014 02:21:04 +0000 (22:21 -0400)]
Merge branch 'alb_learning'

Veaceslav Falico says:

====================
bonding: use correct ether type for alb

There have been reports that, while using the ETH_P_LOOP ether type
(0x0060), the ether type is treated as its packet length.

To avoid that and to not break already existing apps - add new ether type
ETH_P_LOOPBACK that contains the correct id - 0x9000.
====================

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
10 years agobonding: use the correct ether type for alb
Veaceslav Falico [Thu, 13 Mar 2014 11:41:58 +0000 (12:41 +0100)]
bonding: use the correct ether type for alb

Currently it's using the wrong ETH_P_LOOP type, which is sometimes treated
as packet length instead of ether type (because it's 0x0060).

Use the new ETH_P_LOOPBACK type.

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoether: add loopback type ETH_P_LOOPBACK
Veaceslav Falico [Thu, 13 Mar 2014 11:41:57 +0000 (12:41 +0100)]
ether: add loopback type ETH_P_LOOPBACK

Per IEEE 802.3*, the correct packet type for loopback 0x9000. There's
already one ETH_P_LOOP 0x0060, which has been there for ages, however it's
plainly wrong as anything that small is considered a length field.

We can't remove it because legacy, so add a new type which corresponds to
the correct id.

http://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml

CC: "David S. Miller" <davem@davemloft.net>
CC: Stefan Richter <stefanr@s5r6.in-berlin.de>
CC: Simon Wunderlich <sw@simonwunderlich.de>
CC: Neil Jerram <Neil.Jerram@metaswitch.com>
CC: Simon Horman <horms@verge.net.au>
CC: Arvid Brodin <Arvid.Brodin@xdin.com>
Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Sat, 15 Mar 2014 02:18:48 +0000 (22:18 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates

This series contains updates to igb, i40e and i40evf.

I provide a code comment fix which David Miller noticed in the last
series of patches I submitted.

Shannon provides a patch to cleanup the NAPI structs when deleting the
netdev.

Anjali provides several patches for i40e, first fixes a bug in the update
filter logic which was causing a kernel panic.  Then provides a fix to
rename an error bit to correctly indicate the error.  Adds a definition
for a new state variable to keep track of features automatically disabled
due to hardware resource limitations versus user enforced feature disabled.
Anjali provides a patch to add code to handle when there is a filter
programming error due to a full table, which also resolves a previous
compile warning about an unused "*pf" variable introduced in the last i40e
series patch submission.

Jesse provides three i40e patches to cleanup strings to make more
consistent and to align with other Intel drivers.

Akeem cleans up a misleading function header comment for i40e.

Mitch provides a fix for i40e/i40evf to use the correctly reported number
of MSI-X vectors in the PF an VF.  Then provides a patch to use
dma_set_mask_and_coherent() which was introduced in v3.13 and simplifies
the DMA mapping code a bit.

v2:
- dropped the 2 ixgbe patches from Emil based on feedback from David Miller,
  where the 2 fixes should be handled in the net core to fix all drivers
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'ieee802154-next'
David S. Miller [Sat, 15 Mar 2014 02:15:35 +0000 (22:15 -0400)]
Merge branch 'ieee802154-next'

Phoebe Buckheister says:

====================
ieee802154: fix endianness and header handling

This patch set enforces network byte order on all internal operations and
fields of the 802.15.4 stack and adds a general representation of 802.15.4
headers with operations to create and parse those headers. This reduces code
duplication in the current stack and also allows for upper layers to read
headers of packets they have just received; it is also necessary for 802.15.4
link layer security, which requires header mangling.

Changes since v1:
 * fixed lowpan packet rx after reassembly. Control blocks were used to
   retrieve source/dest addresses, but the CB is clobbered by reassembly.
   Instead, parse the header anew in lowpan.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add proper length checks to header creations
Phoebe Buckheister [Fri, 14 Mar 2014 20:24:04 +0000 (21:24 +0100)]
ieee802154: add proper length checks to header creations

Have mac802154 header_ops.create fail with -EMSGSIZE if the length
passed will be too large to fit a frame. Since 6lowpan will ensure that
no packet payload will be too large, pass a length of 0 there. 802.15.4
dgram sockets will also return -EMSGSIZE on payloads larger than the
device MTU instead of -EINVAL.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago6lowpan: move lowpan frag_info out of 802.15.4 headers
Phoebe Buckheister [Fri, 14 Mar 2014 20:24:03 +0000 (21:24 +0100)]
6lowpan: move lowpan frag_info out of 802.15.4 headers

Fragmentation and reassembly information for 6lowpan is independent from
the 802.15.4 stack and used only by the 6lowpan reassembly process. Move
the ieee802154_frag_info struct to a private are, it needn't be in the
802.15.4 skb control block.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: use ieee802154_addr instead of *_sa variants
Phoebe Buckheister [Fri, 14 Mar 2014 20:24:02 +0000 (21:24 +0100)]
ieee802154: use ieee802154_addr instead of *_sa variants

Change all internal uses of ieee802154_addr_sa to ieee802154_addr,
except for those instances that communicate directly with userspace.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agomac802154: use header operations to create/parse headers
Phoebe Buckheister [Fri, 14 Mar 2014 20:24:01 +0000 (21:24 +0100)]
mac802154: use header operations to create/parse headers

Use the operations on 802.15.4 header structs introduced in a previous
patch to create and parse all headers in the mac802154 stack. This patch
reduces code duplication between different parts of the mac802154 stack
that needed information from headers, and also fixes a few bugs that
seem to have gone unnoticed until now:

 * 802.15.4 dgram sockets would return a slightly incorrect value for
   the SIOCINQ ioctl
 * mac802154 would not drop frames with the "security enabled" bit set,
   even though it does not support security, in violation of the
   standard

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add header structs with endiannes and operations
Phoebe Buckheister [Fri, 14 Mar 2014 20:24:00 +0000 (21:24 +0100)]
ieee802154: add header structs with endiannes and operations

This patch provides a set of structures to represent 802.15.4 MAC
headers, and a set of operations to push/pull/peek these structs from
skbs. We cannot simply pointer-cast the skb MAC header pointer to these
structs, because 802.15.4 headers are wildly variable - depending on the
first three bytes, virtually all other fields of the header may be
present or not, and be present with different lengths.

The new header creation/parsing routines also support 802.15.4 security
headers, which are currently not supported by the mac802154
implementation of the protocol.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: enforce consistent endianness in the 802.15.4 stack
Phoebe Buckheister [Fri, 14 Mar 2014 20:23:59 +0000 (21:23 +0100)]
ieee802154: enforce consistent endianness in the 802.15.4 stack

Enable sparse warnings about endianness, replace the remaining fields
regarding network operations without explicit endianness annotations
with such that are annotated, and propagate this through the entire
stack.

Uses of ieee802154_addr_sa are not changed yet, this patch is only
concerned with all other fields (such as address filters, operation
parameters and the likes).

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: add address struct with proper endiannes and some operations
Phoebe Buckheister [Fri, 14 Mar 2014 20:23:58 +0000 (21:23 +0100)]
ieee802154: add address struct with proper endiannes and some operations

Add a replacement ieee802154_addr struct with proper endianness on
fields. Short address fields are stored as __le16 as on the network,
extended (EUI64) addresses are __le64 as opposed to the u8[8] format
used previously. This disconnect with the netdev address, which is
stored as big-endian u8[8], is intentional.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoieee802154: rename struct ieee802154_addr to *_sa
Phoebe Buckheister [Fri, 14 Mar 2014 20:23:57 +0000 (21:23 +0100)]
ieee802154: rename struct ieee802154_addr to *_sa

The struct as currently defined uses host byte order for some fields,
and most big endian/EUI display byte order for other fields. Inside the
stack, endianness should ideally match network byte order where possible
to minimize the number of byteswaps done in critical paths, but this
patch does not address this; it is only preparatory.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 15 Mar 2014 01:07:51 +0000 (18:07 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Peter Anvin:
 "Two x86 fixes: Suresh's eager FPU fix, and a fix to the NUMA quirk for
  AMD northbridges.

  This only includes Suresh's fix patch, not the "mostly a cleanup"
  patch which had __init issues"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/amd/numa: Fix northbridge quirk to assign correct NUMA node
  x86, fpu: Check tsk_used_math() in kernel_fpu_end() for eager FPU

10 years agoMerge tag 'pm+acpi-3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 15 Mar 2014 01:02:02 +0000 (18:02 -0700)]
Merge tag 'pm+acpi-3.14-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "Three of these are regression fixes, for two recent regressions and
  one introduced during the 3.13 cycle, and the fourth one is a working
  version of the fix that had to be reverted last time.

  Specifics:

   - A recent ACPI resources handling fix overlooked the fact that it
     had to update the ACPI PNP subsystem's resources parsing too and
     caused confusing warning messages to be printed during system
     intialization on some systems (with arguably buggy ACPI tables).
     Fix from Zhang Rui.

   - Moving the early ACPI initialization before timekeeping_init()
     earlier in this cycle broke fast TSC calibration on at least one
     system, so it needs to be done later, but still before
     efi_enter_virtual_mode() to allow the EFI initialization to refer
     to ACPI.

   - A change related to code duplication reduction in the cpufreq core
     inadvertently caused cpufreq intialization to fail for some CPUs
     handled by intel_pstate by adding checks that may fail for that
     driver, but aren't even necessary when it is used.  The issue is
     addressed by preventing those checks from run in the configurations
     in which they aren't needed.

   - If the Hardware Reduced ACPI flag is set in the ACPI tables, system
     suspend, hibernation and ACPI power off will only work when special
     sleep control and sleep status registeres are provided (their
     addresses in the ACPI tables are not zero).  If those registers are
     not available, the features in question have no chances to work, so
     they shouldn't even be regarded as supported.  That helps with
     power off in particular, because alternative power off methods may
     be used then and they may actually work"

* tag 'pm+acpi-3.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / sleep: Add extra checks for HW Reduced ACPI mode sleep states
  ACPI / init: Invoke early ACPI initialization later
  cpufreq: Skip current frequency initialization for ->setpolicy drivers
  PNP / ACPI: proper handling of ACPI IO/Memory resource parsing failures

10 years agoMerge tag 'dm-3.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Sat, 15 Mar 2014 01:01:23 +0000 (18:01 -0700)]
Merge tag 'dm-3.14-fixes-4' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device-mapper fixes form Mike Snitzer:
 "Two small fixes for the DM cache target:

   - fix corruption with >2TB fast device due to truncation bug
   - fix access beyond end of origin device due to a partial block"

* tag 'dm-3.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache: fix access beyond end of origin device
  dm cache: fix truncation bug when copying a block to/from >2TB fast device

10 years agoi40e/i40evf: Use dma_set_mask_and_coherent
Mitch Williams [Tue, 11 Feb 2014 08:26:33 +0000 (08:26 +0000)]
i40e/i40evf: Use dma_set_mask_and_coherent

In Linux 3.13, dma_set_mask_and_coherent was introduced, and we have
been encouraged to use it. It simplifies the DMA mapping code a bit as
well.

Change-ID: I66e340245af7d0dedfa8b40fec1f5e352754432e
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: Use correct number of VF vectors
Mitch Williams [Tue, 11 Feb 2014 08:26:32 +0000 (08:26 +0000)]
i40e/i40evf: Use correct number of VF vectors

Now that the 2.4 firmware reports the correct number of MSI-X vectors,
use this value correctly when communicating with the VF, and when
setting up the interrupt linked list.

The PF has always reported the correct number of MSI-X vectors, so we
should never increment the value in the vf driver.

Change-ID: Ifeefc631c321390192219ce2af9ada6180c1492f
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Let MDD events be handled by MDD handler
Anjali Singhai Jain [Wed, 12 Feb 2014 01:45:34 +0000 (01:45 +0000)]
i40e: Let MDD events be handled by MDD handler

We have a separate handler for MDD events, a generic reset is not required.

Change-ID: I77858e2d479e4e65c52aede67109464649ea0253
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Bug fix for FDIR replay logic
Anjali Singhai Jain [Tue, 11 Feb 2014 08:26:30 +0000 (08:26 +0000)]
i40e: Bug fix for FDIR replay logic

The FDIR replay logic was being run a little too soon (before the
queues were enabled) and hence the tail bump was not effective till
a later transaction happened on the queue.

Change-ID: Icfd7cd2e79fc3cae3cbd3f703a2b3a148b4e7bf6
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Add code to handle FD table full condition
Anjali Singhai Jain [Wed, 12 Feb 2014 06:33:25 +0000 (06:33 +0000)]
i40e: Add code to handle FD table full condition

Add code to enforce the following policy:
- If the HW reports filter programming error, we check if it's due to a
  full table.
- If so, we go ahead and turn off new rule addition for ATR and then SB
  in that order.
- We monitor the programmed filter count, if enough room is created due
  to filter deletion/reset, we then re-enable SB and ATR new rule addition.

Change-ID: I69d24b29e5c45bc4fa861258e11c2fa7b8868748
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Define a new state variable to keep track of feature auto disable
Anjali Singhai Jain [Tue, 11 Feb 2014 08:26:28 +0000 (08:26 +0000)]
i40e: Define a new state variable to keep track of feature auto disable

This variable is a bit mask. It is needed to differentiate between
user enforced feature disables and auto disable of features due to
HW resource limitations.

Change-ID: Ib4b4f6ae1bb2668c12e482d2555100bc8ad713d5
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Fix function comments
Akeem G Abodunrin [Tue, 11 Feb 2014 08:24:15 +0000 (08:24 +0000)]
i40e: Fix function comments

Correct misleading function comment.

Change-ID: I3f66cff5cc00250a285756b6500a58fad8eba4b5
Signed-off-by: Akeem G Abodunrin <akeem.g.abodunrin@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: simplified init string
Jesse Brandeburg [Tue, 11 Feb 2014 08:24:14 +0000 (08:24 +0000)]
i40e: simplified init string

In a similar way to how ixgbe works, print a short one-line string
showing what features and number of queues the driver and hardware has
enabled at probe time.

Example (wrapped for the commit message):
i40e 0000:06:00.1: Features: PF-id[1] VFs: 64 VSIs: 66 QP: 32 FDir RSS
ATR NTUPLE DCB

Change-ID: I177bf7f93d1c4c921529c92fdf66e614f6b4f755
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: cleanup strings
Jesse Brandeburg [Tue, 11 Feb 2014 08:24:13 +0000 (08:24 +0000)]
i40e: cleanup strings

This patch cleans up the strings that the driver prints during normal
operation and moves many strings into dev_dbg.  It also cleans up
strings printed during reset.

Change-ID: I1835cc4e3c3b22596182b683284e6bb87eac61b2
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: make string references to q be queue
Jesse Brandeburg [Tue, 11 Feb 2014 08:24:12 +0000 (08:24 +0000)]
i40e: make string references to q be queue

This cleans up strings for consistency, q is replaced with queue.

Change-ID: Ia5f9dfae9af261f4c24485854264e02363729cf3
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e/i40evf: Some flow director HW definition fixes
Anjali Singhai Jain [Tue, 11 Feb 2014 08:24:11 +0000 (08:24 +0000)]
i40e/i40evf: Some flow director HW definition fixes

1) Fix a name of the error bit to correctly indicate the error.
2) Added a fd_id field in the 32 byte desc at the place(qw0) where it gets
reported in the programming error desc WB. In a normal data desc
the fd_id field is reported in qw3.

Change-ID: Ide9a24bff7273da5889c36635d629bc3b5212010
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Kevin Scott <kevin.c.scott@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: Fix a bug in the update logic for FDIR SB filter.
Anjali Singhai Jain [Tue, 11 Feb 2014 08:24:09 +0000 (08:24 +0000)]
i40e: Fix a bug in the update logic for FDIR SB filter.

The update filter logic was causing a kernel panic in the original code.
We need to compare the input set to decide whether or not to delete a
filter since we do not have a hash stored. This new design helps fix the issue.

Change-ID: I2462b108e58ca4833312804cda730b4660cc18c9
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoi40e: delete netdev after deleting napi and vectors
Shannon Nelson [Tue, 11 Feb 2014 08:24:07 +0000 (08:24 +0000)]
i40e: delete netdev after deleting napi and vectors

We've been deleting the netdev before getting around to deleting the napi
structs.  Unfortunately, we then didn't delete the napi structs because we
have a check for netdev, thus we were leaving garbage around in the system.

Change-ID: Ife540176f6c9f801147495b3f2d2ac2e61ddcc58
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agoigb: Fix code comment
Jeff Kirsher [Thu, 13 Mar 2014 23:07:14 +0000 (16:07 -0700)]
igb: Fix code comment

Recently added code comment was missing a space that is needed.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
10 years agox86/amd/numa: Fix northbridge quirk to assign correct NUMA node
Daniel J Blueman [Thu, 13 Mar 2014 11:43:01 +0000 (19:43 +0800)]
x86/amd/numa: Fix northbridge quirk to assign correct NUMA node

For systems with multiple servers and routed fabric, all
northbridges get assigned to the first server. Fix this by also
using the node reported from the PCI bus. For single-fabric
systems, the northbriges are on PCI bus 0 by definition, which
are on NUMA node 0 by definition, so this is invarient on most
systems.

Tested on fam10h and fam15h single and multi-fabric systems and
candidate for stable.

Signed-off-by: Daniel J Blueman <daniel@numascale.com>
Acked-by: Steffen Persvold <sp@numascale.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/1394710981-3596-1-git-send-email-daniel@numascale.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
10 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 14 Mar 2014 04:32:16 +0000 (21:32 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Pretty minor set of fixes for radeon, ttm and vmwgfx.  The ttm ones
  are a regression and an oops seen on server chipsets"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/vmwgfx: Fix a surface reference corner-case in legacy emulation mode
  drm/radeon/cik: properly set compute ring status on disable
  drm/radeon/cik: stop the sdma engines in the enable() function
  drm/radeon/cik: properly set sdma ring status on disable
  drm/radeon: fix runpm disabling on non-PX harder
  drm/ttm: don't oops if no invalidate_caches()
  drm/ttm: Work around performance regression with VM_PFNMAP

10 years agoMerge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa...
Linus Torvalds [Fri, 14 Mar 2014 04:25:40 +0000 (21:25 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux

Pull i2c Kconfig fix from Wolfram Sang.

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: Remove usage of orphaned symbol OF_I2C

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 14 Mar 2014 03:38:36 +0000 (20:38 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "I know this is a bit more than you want to see, and I've told the
  wireless folks under no uncertain terms that they must severely scale
  back the extent of the fixes they are submitting this late in the
  game.

  Anyways:

   1) vmxnet3's netpoll doesn't perform the equivalent of an ISR, which
      is the correct implementation, like it should.  Instead it does
      something like a NAPI poll operation.  This leads to crashes.

      From Neil Horman and Arnd Bergmann.

   2) Segmentation of SKBs requires proper socket orphaning of the
      fragments, otherwise we might access stale state released by the
      release callbacks.

      This is a 5 patch fix, but the initial patches are giving
      variables and such significantly clearer names such that the
      actual fix itself at the end looks trivial.

      From Michael S.  Tsirkin.

   3) TCP control block release can deadlock if invoked from a timer on
      an already "owned" socket.  Fix from Eric Dumazet.

   4) In the bridge multicast code, we must validate that the
      destination address of general queries is the link local all-nodes
      multicast address.  From Linus Lüssing.

   5) The x86 BPF JIT support for negative offsets puts the parameter
      for the helper function call in the wrong register.  Fix from
      Alexei Starovoitov.

   6) The descriptor type used for RTL_GIGA_MAC_VER_17 chips in the
      r8169 driver is incorrect.  Fix from Hayes Wang.

   7) The xen-netback driver tests skb_shinfo(skb)->gso_type bits to see
      if a packet is a GSO frame, but that's not the correct test.  It
      should use skb_is_gso(skb) instead.  Fix from Wei Liu.

   8) Negative msg->msg_namelen values should generate an error, from
      Matthew Leach.

   9) at86rf230 can deadlock because it takes the same lock from it's
      ISR and it's hard_start_xmit method, without disabling interrupts
      in the latter.  Fix from Alexander Aring.

  10) The FEC driver's restart doesn't perform operations in the correct
      order, so promiscuous settings can get lost.  Fix from Stefan
      Wahren.

  11) Fix SKB leak in SCTP cookie handling, from Daniel Borkmann.

  12) Reference count and memory leak fixes in TIPC from Ying Xue and
      Erik Hugne.

  13) Forced eviction in inet_frag_evictor() must strictly make sure all
      frags are deleted, otherwise module unload (f.e.  6lowpan) can
      crash.  Fix from Florian Westphal.

  14) Remove assumptions in AF_UNIX's use of csum_partial() (which it
      uses as a hash function), which breaks on PowerPC.  From Anton
      Blanchard.

      The main gist of the issue is that csum_partial() is defined only
      as a value that, once folded (f.e.  via csum_fold()) produces a
      correct 16-bit checksum.  It is legitimate, therefore, for
      csum_partial() to produce two different 32-bit values over the
      same data if their respective alignments are different.

  15) Fix endiannes bug in MAC address handling of ibmveth driver, also
      from Anton Blanchard.

  16) Error checks for ipv6 exthdrs offload registration are reversed,
      from Anton Nayshtut.

  17) Externally triggered ipv6 addrconf routes should count against the
      garbage collection threshold.  Fix from Sabrina Dubroca.

  18) The PCI shutdown handler added to the bnx2 driver can wedge the
      chip if it was not brought up earlier already, which in particular
      causes the firmware to shut down the PHY.  Fix from Michael Chan.

  19) Adjust the sanity WARN_ON_ONCE() in qdisc_list_add() because as
      currently coded it can and does trigger in legitimate situations.
      From Eric Dumazet.

  20) BNA driver fails to build on ARM because of a too large udelay()
      call, fix from Ben Hutchings.

  21) Fair-Queue qdisc holds locks during GFP_KERNEL allocations, fix
      from Eric Dumazet.

  22) The vlan passthrough ops added in the previous release causes a
      regression in source MAC address setting of outgoing headers in
      some circumstances.  Fix from Peter Boström"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (70 commits)
  ipv6: Avoid unnecessary temporary addresses being generated
  eth: fec: Fix lost promiscuous mode after reconnecting cable
  bonding: set correct vlan id for alb xmit path
  at86rf230: fix lockdep splats
  net/mlx4_en: Deregister multicast vxlan steering rules when going down
  vmxnet3: fix building without CONFIG_PCI_MSI
  MAINTAINERS: add networking selftests to NETWORKING
  net: socket: error on a negative msg_namelen
  MAINTAINERS: Add tools/net to NETWORKING [GENERAL]
  packet: doc: Spelling s/than/that/
  net/mlx4_core: Load the IB driver when the device supports IBoE
  net/mlx4_en: Handle vxlan steering rules for mac address changes
  net/mlx4_core: Fix wrong dump of the vxlan offloads device capability
  xen-netback: use skb_is_gso in xenvif_start_xmit
  r8169: fix the incorrect tx descriptor version
  tools/net/Makefile: Define PACKAGE to fix build problems
  x86: bpf_jit: support negative offsets
  bridge: multicast: enable snooping on general queries only
  bridge: multicast: add sanity check for general query destination
  tcp: tcp_release_cb() should release socket ownership
  ...

10 years agoi2c: Remove usage of orphaned symbol OF_I2C
Richard Weinberger [Sun, 9 Feb 2014 18:47:40 +0000 (19:47 +0100)]
i2c: Remove usage of orphaned symbol OF_I2C

The symbol is an orphan, don't depend on it anymore.

Signed-off-by: Richard Weinberger <richard@nod.at>
[wsa: enhanced commit message]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Fixes: 687b81d083c0 (i2c: move OF helpers into the core)
Cc: stable@kernel.org
10 years agoMerge branches 'pnp', 'acpi-init', 'acpi-sleep' and 'pm-cpufreq'
Rafael J. Wysocki [Thu, 13 Mar 2014 21:12:30 +0000 (22:12 +0100)]
Merge branches 'pnp', 'acpi-init', 'acpi-sleep' and 'pm-cpufreq'

* pnp:
  PNP / ACPI: proper handling of ACPI IO/Memory resource parsing failures

* acpi-init:
  ACPI / init: Invoke early ACPI initialization later

* acpi-sleep:
  ACPI / sleep: Add extra checks for HW Reduced ACPI mode sleep states

* pm-cpufreq:
  cpufreq: Skip current frequency initialization for ->setpolicy drivers

10 years agoACPI / sleep: Add extra checks for HW Reduced ACPI mode sleep states
Rafael J. Wysocki [Thu, 13 Mar 2014 21:11:39 +0000 (22:11 +0100)]
ACPI / sleep: Add extra checks for HW Reduced ACPI mode sleep states

If the HW Reduced ACPI mode bit is set in the FADT, ACPICA uses
the optional sleep control and sleep status registers for making
the system enter sleep states (including S5), so it is not possible
to use system sleep states or power it off using ACPI if the HW
Reduced ACPI mode bit is set and those registers are not available.

For this reason, add a new function, acpi_sleep_state_supported(),
checking if the HW Reduced ACPI mode bit is set and whether or not
system sleep states are usable in that case in addition to checking
the return value of acpi_get_sleep_type_data() and make the ACPI
sleep setup routines use that function to check the availability of
system sleep states.

Among other things, this prevents the kernel from attempting to
use ACPI for powering off HW Reduced ACPI systems without the sleep
control and sleep status registers, because ACPI power off doesn't
have a chance to work on them.  That allows alternative power off
mechanisms that may actually work to be used on those systems.  The
affected machines include Dell Venue 8 Pro, Asus T100TA, Haswell
Desktop SDP and Ivy Bridge EP Demo depot.

References: https://bugzilla.kernel.org/show_bug.cgi?id=70931
Reported-by: Adam Williamson <awilliam@redhat.com>
Tested-by: Aubrey Li <aubrey.li@linux.intel.com>
Cc: 3.4+ <stable@vger.kernel.org> # 3.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
10 years ago6lowpan: reassembly: un-export local functions
Florian Westphal [Thu, 13 Mar 2014 19:58:03 +0000 (20:58 +0100)]
6lowpan: reassembly: un-export local functions

most of these are only used locally, make them static.
fold lowpan_expire_frag_queue into its caller, its small enough.

Cc: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoipv6: Avoid unnecessary temporary addresses being generated
Heiner Kallweit [Wed, 12 Mar 2014 21:13:19 +0000 (22:13 +0100)]
ipv6: Avoid unnecessary temporary addresses being generated

tmp_prefered_lft is an offset to ifp->tstamp, not now. Therefore
age needs to be added to the condition.

Age calculation in ipv6_create_tempaddr is different from the one
in addrconf_verify and doesn't consider ADDRCONF_TIMER_FUZZ_MINUS.
This can cause age in ipv6_create_tempaddr to be less than the one
in addrconf_verify and therefore unnecessary temporary address to
be generated.
Use age calculation as in addrconf_modify to avoid this.

Signed-off-by: Heiner Kallweit <heiner.kallweit@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agosh_eth: update OF PHY registeration
Ben Dooks [Wed, 12 Mar 2014 17:47:40 +0000 (17:47 +0000)]
sh_eth: update OF PHY registeration

If the sh_eth device is registered using OF, then the driver
should call of_mdiobus_register() to register the PHYs described
in the devicetree and then use of_phy_connect() to connect the
PHYs to the device.

This ensures that any PHYs registered in the device tree are
appropriately connected to the parent devices nodes so that
the PHY drivers can access their OF properties.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoeth: fec: Fix lost promiscuous mode after reconnecting cable
Stefan Wahren [Wed, 12 Mar 2014 10:28:19 +0000 (11:28 +0100)]
eth: fec: Fix lost promiscuous mode after reconnecting cable

If the Freescale fec is in promiscuous mode and network cable is
reconnected then the promiscuous mode get lost. The problem is caused
by a too soon call of set_multicast_list to re-enable promisc mode.
The FEC_R_CNTRL register changes are overwritten by fec_restart.

This patch fixes this by moving the call behind the init of FEC_R_CNTRL
register in fec_restart.

Successful tested on a i.MX28 board.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobonding: set correct vlan id for alb xmit path
dingtianhong [Wed, 12 Mar 2014 09:31:59 +0000 (17:31 +0800)]
bonding: set correct vlan id for alb xmit path

The commit d3ab3ffd1d728d7ee77340e7e7e2c7cfe6a4013e
(bonding: use rlb_client_info->vlan_id instead of ->tag)
remove the rlb_client_info->tag, but occur some issues,
The vlan_get_tag() will return 0 for success and -EINVAL for
error, so the client_info->vlan_id always be set to 0 if the
vlan_get_tag return 0 for success, so the client_info would
never get a correct vlan id.

We should only set the vlan id to 0 when the vlan_get_tag return error.

Fixes: d3ab3ffd1d7 (bonding: use rlb_client_info->vlan_id instead of ->tag)
CC: Ding Tianhong <dingtianhong@huawei.com>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoat86rf230: fix lockdep splats
Alexander Aring [Wed, 12 Mar 2014 07:21:24 +0000 (08:21 +0100)]
at86rf230: fix lockdep splats

This patch fix a lockdep in the at86rf230 driver, otherwise we get:

[   30.206517] =================================
[   30.211078] [ INFO: inconsistent lock state ]
[   30.215647] 3.14.0-20140108-1-00994-g32e9426 #163 Not tainted
[   30.221660] ---------------------------------
[   30.226222] inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage.
[   30.232514] systemd-udevd/157 [HC1[1]:SC0[0]:HE0:SE1] takes:
[   30.238439]  (&(&lp->lock)->rlock){?.+...}, at: [<c03600f8>] at86rf230_isr+0x18/0x44
[   30.246621] {HARDIRQ-ON-W} state was registered at:
[   30.251728]   [<c0061ce4>] __lock_acquire+0x7a4/0x18d8
[   30.257135]   [<c0063500>] lock_acquire+0x68/0x7c
[   30.262071]   [<c0588820>] _raw_spin_lock+0x28/0x38
[   30.267203]   [<c0361240>] at86rf230_xmit+0x1c/0x144
[   30.272412]   [<c057ba6c>] mac802154_xmit_worker+0x88/0x148
[   30.278271]   [<c0047844>] process_one_work+0x274/0x404
[   30.283761]   [<c00484c0>] worker_thread+0x228/0x374
[   30.288971]   [<c004cfb8>] kthread+0xd0/0xe4
[   30.293455]   [<c000dac8>] ret_from_fork+0x14/0x2c
[   30.298493] irq event stamp: 8948
[   30.301963] hardirqs last  enabled at (8947): [<c00cb290>] __kmalloc+0xb4/0x110
[   30.309636] hardirqs last disabled at (8948): [<c00115d4>] __irq_svc+0x34/0x5c
[   30.317215] softirqs last  enabled at (8452): [<c0037324>] __do_softirq+0x1dc/0x264
[   30.325243] softirqs last disabled at (8439): [<c0037638>] irq_exit+0x80/0xf4

We use the lp->lock inside the isr of at86rf230, that's why we need the
irqsave spinlock calls.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agonet_sched: return nla_nest_end() instead of skb->len
Yang Yingliang [Wed, 12 Mar 2014 02:20:32 +0000 (10:20 +0800)]
net_sched: return nla_nest_end() instead of skb->len

nla_nest_end() already has return skb->len, so replace
return skb->len with return nla_nest_end instead().

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agobcm63xx_enet: Stop pretending to support netpoll
Eric W. Biederman [Tue, 11 Mar 2014 21:33:35 +0000 (14:33 -0700)]
bcm63xx_enet: Stop pretending to support netpoll

bcm_enet_netpoll does not exist, and causing
bcm63xx_net to fail to build when NET_POLL_CONTROLLER
is defined.

Remove the bogus .ndo_poll_controller = bcm_enet_netpoll

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
10 years agoMerge branch 'napi_budget_zero'
David S. Miller [Thu, 13 Mar 2014 19:18:50 +0000 (15:18 -0400)]
Merge branch 'napi_budget_zero'

Eric W. Biederman says:

====================
Don't receive packets when the napi budget == 0

To the best of understanding processing any received packets when the
napi budget == 0 is broken driver behavior.  At the same time I don't
think we have ever cared before so there are a handful of drivers that
need fixes.

I care now as I will shortly be using htis in netpoll to get the
tx queue processing without the rx queue processing.

Drivers that need fixes are few and far between, and so far I have only
found two of them.  More similar patches later if I find more drivers
that need fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
10 years ago8139cp: Don't receive packets when the napi budget == 0
Eric W. Biederman [Tue, 11 Mar 2014 21:31:43 +0000 (14:31 -0700)]
8139cp: Don't receive packets when the napi budget == 0

Processing any incoming packets with a with a napi budget of 0
is incorrect driver behavior.

This matters as netpoll will shortly call drivers with a budget of 0
to avoid receive packet processing happening in hard irq context.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>