Add a dependency to COMPILE_TEST so that the driver can be compiled for
test purposes.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Berlin SoCs have an Ethernet controller compatible with the pxa168.
Allow these SoCs to use the pxa168_eth driver.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch rework the way the MAC address is retrieved. The MAC address
can now, in addition to being random, be set in the device tree or
retrieved from the Ethernet controller MAC address registers. The
probing function will try to get a MAC address in the following order:
- From the device tree.
- From the Ethernet controller MAC address registers.
- Generate a random one.

This patch also adds a function to read the MAC address from the
Ethernet Controller registers.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When changing the MAC address, in addition to updating the dev_addr in
the net_device structure, this patch also update the MAC address
registers (high and low) of the Ethernet controller with the new MAC.
The address stored in these registers is used for IEEE 802.3x Ethernet
flow control, which is already enabled.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

IEEE 802.3x Ethernet flow control is disabled when bit (1 << 2) is set
in the port status register. Fix the flow control detection in the link
event handling function which was relying on the opposite assumption.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This adds the binding documentation for the Marvell PXA168 Ethernet
controller, following its DT support.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Add the device tree support to the pxa168_eth driver.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Clean up a bit the pxa168_eth driver before adding the device tree
support.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Or Gerlitz says:

====================
mlx4_core driver updates

A series from Jack and Co of low-level fixes for the mlx4_core driver
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ConnectX2 HCAs have max_mtu=4k and max_vl=8 vls. However, if you specify
a 4K mtu, the max_vl supported for 4K is 4 vls. The driver at startup
attempts to set a 4K mtu using the max_vl value obtained from QUERY_PORT.

Since the max_vl value is 8 vls (which is supported up to 2K mtu size),
the first attempt to set the mtl/vl port value will fail, generating
the following error message in the log:

  mlx4_core 0000:06:00.0: command 0xc failed: fw status = 0x40

The driver then tries again, using mtu=4k, vls=4, and this succeeds.

Since we do not want to have this error message always displayed at driver
start when there are ConnectX2 HCAs on the host, we deprecate the error
message for this specific command/input_modifier/opcode_modifier/fw-status
to be debug.
Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The function mlx4_QUERY_PORT_wrapper implements only the
QUERY_PORT "general" case (opcode modifier = 0).

Verify that the opcode modifier is zero, and also that the
input modifier contains only the port number in bits 0..7
(all other bits should be zero).
Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In the new flow, we separate the pci initialization and teardown
from the initialization and teardown of the other resources.

__mlx4_init_one handles the pci resources initialization. It then
calls mlx4_load_one to initialize the remainder of the resources.

When removing a device, mlx4_remove_one is invoked. However, now
mlx4_remove_one calls mlx4_unload_one to free all the resources except the pci
resources. When mlx4_unload_one returns, mlx4_remove_one then frees the
pci resources.

The above separation will allow us to implement 'reset flow' in the future.
It will also enable more EQs for VFs and is a pre-step to the modern API to
enable/disable SRIOV.

Also added nvfs; an integer array of size MLX4_MAX_PORTS + 1; to the mlx4_dev
struct. This new field is used to avoid parsing the num_vfs module parameter
each time the mlx4_restart_one is called.
Signed-off-by: NMajd Dibbiny <majd@mellanox.com>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When unloading the host driver while there are VFs active on VMs,
the PF driver disabled sriov anyway, causing kernel crashes.

We now leave SRIOV enabled, to avoid that.

When the driver is reloaded, __mlx4_init_one is invoked on the PF.
It now checks to see if SRIOV is already enabled on the PF -- and
if so does not enable sriov again.
Signed-off-by: NTal Alon <talal@mellanox.com>
Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Eric reports build failure with
CONFIG_BRIDGE_NETFILTER=n

We insist to build br_nf_core.o unconditionally, but we must only do so
if br_netfilter was enabled, else it fails to build due to
functions being defined to empty stubs (and some structure members
being defined out).

Also, BRIDGE_NETFILTER=y|m makes no sense when BRIDGE=n.

Fixes: 34666d46 (netfilter: bridge: move br_netfilter out of the core)
Reported-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Markus Pargmann says:

====================
net: cpsw: Support for am335x chip MACIDs

This series adds support to the cpsw driver to read the MACIDs of the am335x
chip and use them as fallback. These addresses are only used if there are no
mac addresses in the devicetree, for example set by a bootloader.
====================
Acked-by: NMugunthan V N <mugunthanvnm@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

There are 2 MACIDs stored in the control module of the am33xx. These are
read by the cpsw driver if no valid MACID was found in the devicetree.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a function to get the MACIDs from the am33xx SoC
control module registers which hold unique vendor MACIDs. This is only
used if of_get_mac_address() fails to get a valid mac address.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Tested-by: NSteven Rostedt <rostedt@goodmis.org>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use dev_err instead of pr_err.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

"MII_BUS_ID_SIZE" is defined in linux/phy.h which is not included in the
cpsw.h file.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

ret is set 0 at this point, so jumping to that error label would result
in a return value of 0. Set ret to -ENOMEM to return a proper error
value.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

mac-address is an optional property. If no mac-address is set, a random
mac-address will be generated.
Signed-off-by: NMarkus Pargmann <mpa@pengutronix.de>
Reviewed-by: NWolfram Sang <wsa@the-dreams.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

As the code stands today, bonding stats are based simply on the stats
from the member interfaces.  If a member was to be removed from a bond,
the stats would instantly drop.  This would be confusing to an admin
would would suddonly see interface stats drop while traffic is still
flowing.

In addition to preventing the stats drops mentioned above, new members
will now be added to the bond and only traffic received after the member
was added to the bond will be counted as part of bonding stats.  Bonding
counters will also be updated when any slaves are dropped to make sure
the reported stats are reliable.

v2: Changes suggested by Nik to properly allocate/free stats memory.
v3: Properly destroy workqueue and fix netlink configuration path.
v4: Moved cached stats into bonding and slave structs as there does not
seem to be a complexity/performance benefit to using alloc'd memory vs
in-struct memory.
Signed-off-by: NAndy Gospodarek <gospo@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

After previous patches to simplify qstats the qstats can be
made per cpu with a packed union in Qdisc struct.
Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This removes the use of qstats->qlen variable from the classifiers
and makes it an explicit argument to gnet_stats_copy_queue().

The qlen represents the qdisc queue length and is packed into
the qstats at the last moment before passnig to user space. By
handling it explicitely we avoid, in the percpu stats case, having
to figure out which per_cpu variable to put it in.

It would probably be best to remove it from qstats completely
but qstats is a user space ABI and can't be broken. A future
patch could make an internal only qstats structure that would
avoid having to allocate an additional u32 variable on the
Qdisc struct. This would make the qstats struct 128bits instead
of 128+32.
Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This adds helpers to manipulate qstats logic and replaces locations
that touch the counters directly. This simplifies future patches
to push qstats onto per cpu counters.
Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In order to run qdisc's without locking statistics and estimators
need to be handled correctly.

To resolve bstats make the statistics per cpu. And because this is
only needed for qdiscs that are running without locks which is not
the case for most qdiscs in the near future only create percpu
stats when qdiscs set the TCQ_F_CPUSTATS flag.

Next because estimators use the bstats to calculate packets per
second and bytes per second the estimator code paths are updated
to use the per cpu statistics.
Signed-off-by: NJohn Fastabend <john.r.fastabend@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds a new mode of operation to macvlan, called "source".
It allows one to set a list of allowed mac address, which is used
to match against source mac address from received frames on underlying
interface.
This enables creating mac based VLAN associations, instead of standard
port or tag based. The feature is useful to deploy 802.1x mac based
behavior, where drivers of underlying interfaces doesn't allows that.

Configuration is done through the netlink interface using e.g.:
 ip link add link eth0 name macvlan0 type macvlan mode source
 ip link add link eth0 name macvlan1 type macvlan mode source
 ip link set link dev macvlan0 type macvlan macaddr add 00:11:11:11:11:11
 ip link set link dev macvlan0 type macvlan macaddr add 00:22:22:22:22:22
 ip link set link dev macvlan0 type macvlan macaddr add 00:33:33:33:33:33
 ip link set link dev macvlan1 type macvlan macaddr add 00:33:33:33:33:33
 ip link set link dev macvlan1 type macvlan macaddr add 00:44:44:44:44:44

This allows clients with MAC addresses 00:11:11:11:11:11,
00:22:22:22:22:22 to be part of only VLAN associated with macvlan0
interface. Clients with MAC addresses 00:44:44:44:44:44 with only VLAN
associated with macvlan1 interface. And client with MAC address
00:33:33:33:33:33 to be associated with both VLANs.

Based on work of Stefan Gula <steweg@gmail.com>

v8: last version of Stefan Gula for Kernel 3.2.1
v9: rework onto linux-next 2014-03-12 by Michael Braun
    add MACADDR_SET command, enable to configure mac for source mode
    while creating interface
v10:
  - reduce indention level
  - rename source_list to source_entry
  - use aligned 64bit ether address
  - use hash_64 instead of addr[5]
v11:
  - rebase for 3.14 / linux-next 20.04.2014
v12
  - rebase for linux-next 2014-09-25
Signed-off-by: NMichael Braun <michael-dev@fami-braun.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
pull request: netfilter/ipvs updates for net-next

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

1) Four patches to make the new nf_tables masquerading support
   independent of the x_tables infrastructure. This also resolves a
   compilation breakage if the masquerade target is disabled but the
   nf_tables masq expression is enabled.

2) ipset updates via Jozsef Kadlecsik. This includes the addition of the
   skbinfo extension that allows you to store packet metainformation in the
   elements. This can be used to fetch and restore this to the packets through
   the iptables SET target, patches from Anton Danilov.

3) Add the hash:mac set type to ipset, from Jozsef Kadlecsick.

4) Add simple weighted fail-over scheduler via Simon Horman. This provides
   a fail-over IPVS scheduler (unlike existing load balancing schedulers).
   Connections are directed to the appropriate server based solely on
   highest weight value and server availability, patch from Kenny Mathis.

5) Support IPv6 real servers in IPv4 virtual-services and vice versa.
   Simon Horman informs that the motivation for this is to allow more
   flexibility in the choice of IP version offered by both virtual-servers
   and real-servers as they no longer need to match: An IPv4 connection
   from an end-user may be forwarded to a real-server using IPv6 and
   vice versa. No ip_vs_sync support yet though. Patches from Alex Gartrell
   and Julian Anastasov.

6) Add global generation ID to the nf_tables ruleset. When dumping from
   several different object lists, we need a way to identify that an update
   has ocurred so userspace knows that it needs to refresh its lists. This
   also includes a new command to obtain the 32-bits generation ID. The
   less significant 16-bits of this ID is also exposed through res_id field
   in the nfnetlink header to quickly detect the interference and retry when
   there is no risk of ID wraparound.

7) Move br_netfilter out of the bridge core. The br_netfilter code is
   built in the bridge core by default. This causes problems of different
   kind to people that don't want this: Jesper reported performance drop due
   to the inconditional hook registration and I remember to have read complains
   on netdev from people regarding the unexpected behaviour of our bridging
   stack when br_netfilter is enabled (fragmentation handling, layer 3 and
   upper inspection). People that still need this should easily undo the
   damage by modprobing the new br_netfilter module.

8) Dump the set policy nf_tables that allows set parameterization. So
   userspace can keep user-defined preferences when saving the ruleset.
   From Arturo Borrero.

9) Use __seq_open_private() helper function to reduce boiler plate code
   in x_tables, From Rob Jones.

10) Safer default behaviour in case that you forget to load the protocol
   tracker. Daniel Borkmann and Florian Westphal detected that if your
   ruleset is stateful, you allow traffic to at least one single SCTP port
   and the SCTP protocol tracker is not loaded, then any SCTP traffic may
   be pass through unfiltered. After this patch, the connection tracking
   classifies SCTP/DCCP/UDPlite/GRE packets as invalid if your kernel has
   been compiled with support for these modules.
====================

Trivially resolved conflict in include/linux/skbuff.h, Eric moved some
netfilter skbuff members around, and the netfilter tree adjusted the
ifdef guards for the bridging info pointer.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Suggested by Stephen. Also drop inline keyword and let compiler decide.

gcc 4.7.3 decides to no longer inline tcp_ecn_check_ce, so split it up.
The actual evaluation is not inlined anymore while the ECN_OK test is.
Suggested-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

After Octavian Purdilas tcp ipv4/ipv6 unification work this helper only
has a single callsite.

While at it, convert name to lowercase, suggested by Stephen.
Suggested-by: NStephen Hemminger <stephen@networkplumber.org>
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Michael Grzeschik says:

====================
ARCNET: add support for EAE multi interfac card

this series adds support for the PLX Bridge based multi interface
pci cards and adds support to change device address on com200xx chips
during runtime.

This series is based on v3.17-rc7.
It is fixed for build against com20020_cs.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds support for the EAE arcnet cards
which has two Interfaces.
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The com20020-pci driver is currently designed to instance
one netdev with one pci device. This patch adds support to
instance many cards with one pci device, depending on the device
data in the private data.
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds metadata for the com20020 to prepare for devices with
multiple io address areas with multi card interfaces.
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch adds com20020_set_hwaddr to make
it possible to change the hwaddr on runtime.
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The interrupt handler needs to return IRQ_NONE in case
two devices are used with the shared interrupt handler.
Otherwise it could steal interrupts from the other
interface.
Signed-off-by: NMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This variable i is overwritten to 0 by following code
Signed-off-by: NLi RongQing <roy.qing.li@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With proliferation of bit fields in sk_buff, __copy_skb_header() became
quite expensive, showing as the most expensive function in a GSO
workload.

__copy_skb_header() performance is also critical for non GSO TCP
operations, as it is used from skb_clone()

This patch carefully moves all the fields that were not copied in a
separate zone : cloned, nohdr, fclone, peeked, head_frag, xmit_more

Then I moved all other fields and all other copied fields in a section
delimited by headers_start[0]/headers_end[0] section so that we
can use a single memcpy() call, inlined by compiler using long
word load/stores.

I also tried to make all copies in the natural orders of sk_buff,
to help hardware prefetching.

I made sure sk_buff size did not change.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Given following iptables ruleset:

-P FORWARD DROP
-A FORWARD -m sctp --dport 9 -j ACCEPT
-A FORWARD -p tcp --dport 80 -j ACCEPT
-A FORWARD -p tcp -m conntrack -m state ESTABLISHED,RELATED -j ACCEPT

One would assume that this allows SCTP on port 9 and TCP on port 80.
Unfortunately, if the SCTP conntrack module is not loaded, this allows
*all* SCTP communication, to pass though, i.e. -p sctp -j ACCEPT,
which we think is a security issue.

This is because on the first SCTP packet on port 9, we create a dummy
"generic l4" conntrack entry without any port information (since
conntrack doesn't know how to extract this information).

All subsequent packets that are unknown will then be in established
state since they will fallback to proto_generic and will match the
'generic' entry.

Our originally proposed version [1] completely disabled generic protocol
tracking, but Jozsef suggests to not track protocols for which a more
suitable helper is available, hence we now mitigate the issue for in
tree known ct protocol helpers only, so that at least NAT and direction
information will still be preserved for others.

 [1] http://www.spinics.net/lists/netfilter-devel/msg33430.html

Joint work with Daniel Borkmann.
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NDaniel Borkmann <dborkman@redhat.com>
Acked-by: NJozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>