firefly-linux-kernel-4.4.55.git
11 years agonet: clean up skb headers code
Cong Wang [Wed, 29 May 2013 07:16:05 +0000 (15:16 +0800)]
net: clean up skb headers code

commit 1a37e412a0225fcba5587 (net: Use 16bits for *_headers
fields of struct skbuff) converts skb->*_header to u16,
some #if NET_SKBUFF_DATA_USES_OFFSET are now useless,
and to be safe, we could just use "X = (typeof(X)) ~0U;"
as suggested by David.

Cc: David S. Miller <davem@davemloft.net>
Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetfilter: Correct calculation using skb->tail and skb-network_header
Simon Horman [Thu, 30 May 2013 16:39:29 +0000 (16:39 +0000)]
netfilter: Correct calculation using skb->tail and skb-network_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->network_header
will be an offset from head. This is corrected by using wrappers that
ensure that calculations are always made using pointers.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agogro: should aggregate frames without DF
Eric Dumazet [Fri, 31 May 2013 11:18:10 +0000 (11:18 +0000)]
gro: should aggregate frames without DF

GRO on IPv4 doesn't aggregate frames if they don't have DF bit set.

Some servers use IP_MTU_DISCOVER/IP_PMTUDISC_PROBE, so linux receivers
are unable to aggregate this kind of traffic.

The right thing to do is to allow aggregation as long as the DF bit has
same value on all segments.

bnx2x LRO does this correctly.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jerry Chu <hkchu@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: Update RFS target at poll for tcp/udp
David Majnemer [Fri, 31 May 2013 13:15:38 +0000 (13:15 +0000)]
net: Update RFS target at poll for tcp/udp

The current state of affairs is that read()/write() will setup
RFS (Receive Flow Steering) for internet protocol sockets while
poll()/epoll() does not.

When poll() gets called with a TCP or UDP socket, we should update
the flow target.

This permits to RFS (if enabled) to select the appropriate CPU for
following incoming packets.

Note: Only connected UDP sockets can benefit from RFS.

Signed-off-by: David Majnemer <majnemer@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paul Turner <pjt@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agosctp: Correct byte order of access to skb->{network, transport}_header
Simon Horman [Thu, 30 May 2013 20:36:11 +0000 (20:36 +0000)]
sctp: Correct byte order of access to skb->{network, transport}_header

Corrects an byte order conflict introduced by "sctp: Correct access to
skb->{network, transport}_header". All the values in question are host
byte order.

Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotulip: remove redundant D0 power state set
Yijing Wang [Thu, 30 May 2013 00:27:06 +0000 (00:27 +0000)]
tulip: remove redundant D0 power state set

pci_enable_device() will set device power state to D0,
so it's no need to do it again in tulip_init_one().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoqlcnic: remove redundant D0 power state set
Yijing Wang [Thu, 30 May 2013 00:26:09 +0000 (00:26 +0000)]
qlcnic: remove redundant D0 power state set

pci_enable_device() will set device power state to D0,
so it's no need to do it again in qlcnic_attach_func().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet, jme: remove redundant D0 power state set
Yijing Wang [Thu, 30 May 2013 00:22:43 +0000 (00:22 +0000)]
net, jme: remove redundant D0 power state set

pci_enable_device() will set device power state to D0,
so it's no need to do it again in jme_init_one().

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: Add Marvell 88E1510 phy ID
Michal Simek [Thu, 30 May 2013 20:08:27 +0000 (20:08 +0000)]
phy: Add Marvell 88E1510 phy ID

Add support for this new phy ID.

Signed-off-by: Rick Hoover <RHoover@digilentinc.com>
Signed-off-by: Steven Wang <steven.wang@digilentinc.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: Add Marvell 88E1116R phy ID
Michal Simek [Thu, 30 May 2013 20:08:26 +0000 (20:08 +0000)]
phy: Add Marvell 88E1116R phy ID

This phy is on Xilinx ZC702 zynq development board.

Signed-off-by: Anirudha Sarangi <anirudh@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: Use macros instead of hardcoded values in marvell phy driver
Michal Simek [Thu, 30 May 2013 20:08:25 +0000 (20:08 +0000)]
phy: Use macros instead of hardcoded values in marvell phy driver

Use macros from linux/marvell_phy.h instead of duplicate
magic phy ID in the driver.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: Add Vitesse 8211 phy ID
Michal Simek [Thu, 30 May 2013 20:08:24 +0000 (20:08 +0000)]
phy: Add Vitesse 8211 phy ID

Phy is compatible with Vitesse 8221.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: Clean coding style in vitesse phy
Michal Simek [Thu, 30 May 2013 20:08:23 +0000 (20:08 +0000)]
phy: Clean coding style in vitesse phy

- Remove trailing white space
- Remove spaces before tag
- Fix comments

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: undo on DSACK during recovery
Yuchung Cheng [Wed, 29 May 2013 14:20:14 +0000 (14:20 +0000)]
tcp: undo on DSACK during recovery

If the receiver supports DSACK, sender can detect false recoveries and
revert cwnd reductions triggered by either severe network reordering or
concurrent reordering and loss event.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: fix undo on partial ack in recovery
Yuchung Cheng [Wed, 29 May 2013 14:20:13 +0000 (14:20 +0000)]
tcp: fix undo on partial ack in recovery

Upon detecting spurious fast retransmit via timestamps during recovery,
use PRR to clock out new data packet instead of retransmission. Once
all retransmission are proven spurious, the sender then reverts the
cwnd reduction and congestion state to open or disorder.

The current code does the opposite: it undoes cwnd as soon as any
retransmission is spurious and continues to retransmit until all
data are acked. This nullifies the point to undo the cwnd because
the sender is still retransmistting spuriously. This patch fixes
it. The undo_ssthresh argument of tcp_undo_cwnd_reductiuon() is no
longer needed and is removed.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: refactor undo functions
Yuchung Cheng [Wed, 29 May 2013 14:20:12 +0000 (14:20 +0000)]
tcp: refactor undo functions

Refactor and relocate various functions or variables to prepare the
undo fix.  Remove some unused function arguments. Rename tcp_undo_cwr
to tcp_undo_cwnd_reduction to be consistent with the rest of
CWR related function names.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agotcp: consolidate PRR packet accounting
Yuchung Cheng [Wed, 29 May 2013 14:20:11 +0000 (14:20 +0000)]
tcp: consolidate PRR packet accounting

This patch series fixes an undo bug in fast recovery: the sender
mistakenly undos the cwnd too early but continues fast retransmits
until all pending data are acked. This also multiplies the SNMP
stat PARTIALUNDO events by the degree of the network reordering.

The first patch prepares the fix by consolidating the accounting
of newly_acked_sacked in tcp_cwnd_reduction(), instead of updating
newly_acked_sacked everytime sacked_out is adjusted.  Also pass
acked and prior_unsacked as const type because they are readonly
in the rest of recovery processing.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: add DT parsing support
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:48 +0000 (09:32 +0000)]
net: mv643xx_eth: add DT parsing support

This adds device tree parsing support for the shared driver of mv643xx_eth.
As the bindings are slightly different from current PPC bindings new binding
documentation is also added. Following PPC-style device setup, the shared
driver now also adds port platform_devices and sets up port platform_data.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: proper initialization for Kirkwood SoCs
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:47 +0000 (09:32 +0000)]
net: mv643xx_eth: proper initialization for Kirkwood SoCs

Ethernet controllers found on Kirkwood SoCs not only suffer from loosing
MAC address register contents on clock gating but also some important
registers are reset to values that would break ethernet. This patch
clears the CLK125_BYPASS_EN bit for DT enabled Kirkwood only by using
of_device_is_compatible() instead of #ifdefs. Non-DT Kirkwood is not
affected as it installs a clock gating workaround because of the MAC
address issue above. Other Orion SoCs do not suffer from register reset,
do not have the bit in question, or do not have the register at all.
Moreover, system controllers on PPC using this driver should also be
protected from clearing that bit.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: use of_phy_connect if phy_node present
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:46 +0000 (09:32 +0000)]
net: mv643xx_eth: use of_phy_connect if phy_node present

This connects to a phy node passed to the port device instead of probing
the phy by phy_addr.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: add phy_node to platform_data struct
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:45 +0000 (09:32 +0000)]
net: mv643xx_eth: add phy_node to platform_data struct

This adds a struct device_node pointer for a phy passed by phandle
to mv643xx_eth node.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: use managed devm_ioremap for port registers
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:44 +0000 (09:32 +0000)]
net: mv643xx_eth: use managed devm_ioremap for port registers

Make use of managed devm_ioremap and remove corresponding iounmap.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: mv643xx_eth: use phy_disconnect instead of phy_detach
Sebastian Hesselbarth [Wed, 29 May 2013 09:32:43 +0000 (09:32 +0000)]
net: mv643xx_eth: use phy_disconnect instead of phy_detach

Using a separated mdio bus driver with mvmdio, phy_detach on network device
removal will not stop the phy and finally lead to NULL pointer dereference
in mvmdio due to non-existent network device. Use phy_disconnect instead
to properly stop phy device from accessing network device prior removal of
the network device.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Update driver header
Michal Simek [Thu, 30 May 2013 00:28:08 +0000 (00:28 +0000)]
net: emaclite: Update driver header

Correct email address and years.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Enable emaclite for Xilinx Arm Zynq platform
Michal Simek [Thu, 30 May 2013 00:28:07 +0000 (00:28 +0000)]
net: emaclite: Enable emaclite for Xilinx Arm Zynq platform

Enable emaclite for Xilinx ARM Zynq platform.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Do not use microblaze and ppc IO functions
Michal Simek [Thu, 30 May 2013 00:28:06 +0000 (00:28 +0000)]
net: emaclite: Do not use microblaze and ppc IO functions

Emaclite can be used on ARM zynq where in_be32/out_be32 IO
functions are not present. Use standard __raw_readl/__raw_writel
IO functions instead.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Let's make xemaclite_adjust_link static
Michal Simek [Thu, 30 May 2013 00:28:05 +0000 (00:28 +0000)]
net: emaclite: Let's make xemaclite_adjust_link static

xemaclite_adjust_link is used locally.
It removes sparse warning:
drivers/net/ethernet/xilinx/xilinx_emaclite.c:916:6: warning:
symbol 'xemaclite_adjust_link' was not declared. Should it be static?

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Support multiple phys connected to one MDIO bus
Michal Simek [Thu, 30 May 2013 00:28:04 +0000 (00:28 +0000)]
net: emaclite: Support multiple phys connected to one MDIO bus

For system which contains at least two ethernet IP where
one IP manage MDIO bus with several PHYs.

Example dts node:
ethernet_mac0: ethernet@81000000 {
compatible = "xlnx,xps-ethernetlite-1.00.a";
device_type = "network";
interrupt-parent = <&xps_intc_0>;
interrupts = < 1 0 >;
local-mac-address = [ 00 0a 35 00 db bb ];
phy-handle = <&ethernet_mac0_phy0>;
reg = < 0x81000000 0x10000 >;
xlnx,duplex = <0x1>;
xlnx,family = "spartan3e";
xlnx,include-internal-loopback = <0x0>;
xlnx,include-mdio = <0x1>;
xlnx,rx-ping-pong = <0x0>;
xlnx,tx-ping-pong = <0x0>;
ethernet_mac0_mdio {
#address-cells = <1>;
#size-cells = <0>;
ethernet_mac0_phy0: phy@1 {
reg = <0x1>;
} ;
ethernet_mac0_phy1: phy@3 {
reg = <0x3>;
} ;
} ;
} ;
ethernet_mac2: ethernet@81040000 {
compatible = "xlnx,xps-ethernetlite-1.00.a";
device_type = "network";
interrupt-parent = <&xps_intc_0>;
interrupts = < 11 0 >;
local-mac-address = [ 00 0a 35 00 db bb ];
phy-handle = <&ethernet_mac0_phy1>;
reg = < 0x81040000 0x10000 >;
xlnx,duplex = <0x1>;
xlnx,family = "spartan3e";
xlnx,include-internal-loopback = <0x0>;
xlnx,include-mdio = <0x0>;
xlnx,rx-ping-pong = <0x0>;
xlnx,tx-ping-pong = <0x0>;
} ;

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: emaclite: Report failures in mdio setup
Michal Simek [Thu, 30 May 2013 00:28:03 +0000 (00:28 +0000)]
net: emaclite: Report failures in mdio setup

Be more verbose when any problem happens.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'netxen_nic'
David S. Miller [Thu, 30 May 2013 23:52:47 +0000 (16:52 -0700)]
Merge branch 'netxen_nic'

Manish Chopra says:

====================
This patch series includes following changes:

* Log driver version information with firmware version information.
* Log "Unknown" adapter name and serial number in case of
  mismatched adapter type.
* netxen_setup_intr() function code cleanup and changes to avoid attaching
  of multiple pci functions on an adapter with mixed interrupts mode
  [MSI-X/MSI + INTx].
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetxen_nic: Update version to 4.0.81
Manish Chopra [Thu, 30 May 2013 09:51:38 +0000 (09:51 +0000)]
netxen_nic: Update version to 4.0.81

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetxen_nic: Avoid mixed mode interrupts
Manish Chopra [Thu, 30 May 2013 09:51:37 +0000 (09:51 +0000)]
netxen_nic: Avoid mixed mode interrupts

o Adapters do not support co-existence of INTx Interrupt with
  MSI-X or MSI among multiple functions. Prevent attaching
  of a function during normal load, if adapter gets into mixed
  mode of interrupts

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetxen_nic: netxen_setup_intr() function code cleanup
Manish Chopra [Thu, 30 May 2013 09:51:36 +0000 (09:51 +0000)]
netxen_nic: netxen_setup_intr() function code cleanup

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetxen_nic: Log proper error message in case of mismatched adapter type
Manish Chopra [Thu, 30 May 2013 09:51:35 +0000 (09:51 +0000)]
netxen_nic: Log proper error message in case of mismatched adapter type

o log "Unknown" board name and "Unknown" serial number in case
  of mismatched adapter type found. This will avoid weird characters
  logs when an adapter is in bad state or corrupted.

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetxen_nic: Log driver version with firmware version
Manish Chopra [Thu, 30 May 2013 09:51:34 +0000 (09:51 +0000)]
netxen_nic: Log driver version with firmware version

Signed-off-by: Manish Chopra <manish.chopra@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
David S. Miller [Thu, 30 May 2013 22:53:18 +0000 (15:53 -0700)]
Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- reduce broadcast overhead on non-lossy wired links
- fix typos in kernel doc
- use eth_hdr() when possible
- use netdev_allock_skb_ip_align() and don't deal with NET_IP_ALIGN
- change VID semantic in the BLA component
- other minor cleanups and code refactoring

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/usb/kalmia: use %*phC to dump small buffers
Andy Shevchenko [Wed, 29 May 2013 07:22:30 +0000 (10:22 +0300)]
net/usb/kalmia: use %*phC to dump small buffers

Instead of dereferencing pointer and put values on stack we could use nice
%*phC specifier.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: trivial: update the comments to reflect the reality
Veaceslav Falico [Tue, 28 May 2013 01:26:13 +0000 (01:26 +0000)]
bonding: trivial: update the comments to reflect the reality

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: trivial: remove unused parameter from alb_swap_mac_addr()
Veaceslav Falico [Mon, 27 May 2013 23:14:51 +0000 (23:14 +0000)]
bonding: trivial: remove unused parameter from alb_swap_mac_addr()

After b924551 ("bonding: fix enslaving in alb mode when link down") we
don't need the bond parameter in alb_swap_mac_addr(), so remove it.

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovxlan: defer vxlan init as late as possible
Cong Wang [Mon, 27 May 2013 22:35:53 +0000 (22:35 +0000)]
vxlan: defer vxlan init as late as possible

When vxlan is compiled as builtin, its init code
runs before IPv6 init, this could cause problems
if we create IPv6 socket in the latter patch.

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovxlan: use unsigned int instead of unsigned
Cong Wang [Mon, 27 May 2013 22:35:52 +0000 (22:35 +0000)]
vxlan: use unsigned int instead of unsigned

'unsigned int' is slightly better.

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agovxlan: remove the unused rcu head from struct vxlan_rdst
Cong Wang [Mon, 27 May 2013 22:35:51 +0000 (22:35 +0000)]
vxlan: remove the unused rcu head from struct vxlan_rdst

Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet, ipv4, ipv6: Correct assignment of skb->network_header to skb->tail
Simon Horman [Tue, 28 May 2013 20:34:29 +0000 (20:34 +0000)]
net, ipv4, ipv6: Correct assignment of skb->network_header to skb->tail

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer however skb->network_header is now
an offset.

This patch corrects the problem by adding a wrapper to return skb tail as
an offset regardless of the value of NET_SKBUFF_DATA_USES_OFFSET. It seems
that skb->tail that this offset may be more than 64k and some care has been
taken to treat such cases as an error.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agosctp: Correct access to skb->{network, transport}_header
Simon Horman [Tue, 28 May 2013 20:34:28 +0000 (20:34 +0000)]
sctp: Correct access to skb->{network, transport}_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case sk_buff_data_t will be a pointer, however,
skb->{network,transport}_header is now __u16.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv4: Correct comparisons and calculations using skb->tail and skb-transport_header
Simon Horman [Tue, 28 May 2013 20:34:27 +0000 (20:34 +0000)]
ipv4: Correct comparisons and calculations using skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that comparisons and calculations are always made using pointers.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoipv6: Correct comparisons and calculations using skb->tail and skb-transport_header
Simon Horman [Tue, 28 May 2013 20:34:26 +0000 (20:34 +0000)]
ipv6: Correct comparisons and calculations using skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that comparisons and calculations are always made using pointers.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: Correct comparisons and calculations using skb->tail and skb-transport_header
Simon Horman [Tue, 28 May 2013 20:34:25 +0000 (20:34 +0000)]
net: Correct comparisons and calculations using skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that comparisons and calculations are always made using pointers.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agocxgb3: Correct comparisons and calculations using skb->tail and skb-transport_header
Simon Horman [Tue, 28 May 2013 20:34:24 +0000 (20:34 +0000)]
cxgb3: Correct comparisons and calculations using skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that comparisons and calculations are always made using pointers.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoisdn: Correct comparison of skb->tail and skb-transport_header
Simon Horman [Tue, 28 May 2013 20:34:23 +0000 (20:34 +0000)]
isdn: Correct comparison of skb->tail and skb-transport_header

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->transport_header
will be an offset from head. This is corrected by using wrappers that
ensure that the comparison is always between pointers.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: always pass struct netdev_notifier_info to netdevice notifiers
Cong Wang [Wed, 29 May 2013 03:30:50 +0000 (11:30 +0800)]
net: always pass struct netdev_notifier_info to netdevice notifiers

commit 351638e7deeed2ec8ce451b53d3 (net: pass info struct via netdevice notifier)
breaks booting of my KVM guest, this is due to we still forget to pass
struct netdev_notifier_info in several places. This patch completes it.

Cc: Jiri Pirko <jiri@resnulli.us>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobatman-adv: Start new development cycle
Simon Wunderlich [Sat, 20 Apr 2013 15:15:09 +0000 (17:15 +0200)]
batman-adv: Start new development cycle

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c
Martin Hundebøll [Sat, 20 Apr 2013 11:54:39 +0000 (13:54 +0200)]
batman-adv: Move call to batadv_nc_skb_forward() from routing.c to send.c

The call to batadv_nc_skb_forward() fits better in
batadv_send_skb_to_orig(), as this is where the actual next hop is
looked up.

To let the caller of batadv_send_skb_to_orig() know wether the skb is
transmitted, buffered or failed, the return value is changed from
boolean to int.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: print the VID properly
Antonio Quartulli [Fri, 19 Apr 2013 16:07:01 +0000 (18:07 +0200)]
batman-adv: print the VID properly

Since the MSB bits of any vid variable are now used for
storing flags, print the vid properly by taking the flags
away and printing -1 in case of VID representing no real
VLAN.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: change VID semantic in the BLA code
Antonio Quartulli [Fri, 19 Apr 2013 16:07:00 +0000 (18:07 +0200)]
batman-adv: change VID semantic in the BLA code

In order to make batman-adv fully vlan aware later, the
semantic used for variables storing the VLAN ID values has
to be changed in order to be adapted to the new one which
will be used batman-adv wide.

In particular, the VID has to be an "_unsigned_ short int"
and its 4 MSB will be used as a flag bitfield, while the
remaining 12 bits are used to store the real VID value

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
11 years agobatman-adv: do not print orig nodes without nc neighbors on nc table print
Marek Lindner [Wed, 17 Apr 2013 20:56:03 +0000 (04:56 +0800)]
batman-adv: do not print orig nodes without nc neighbors on nc table print

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: Remove unnecessary INIT_HLIST_NODE() calls
Linus Lüssing [Fri, 19 Apr 2013 10:06:56 +0000 (12:06 +0200)]
batman-adv: Remove unnecessary INIT_HLIST_NODE() calls

There's no need to for an explicit hlist_node initialization if it is
added to a list right away, like it's the case with the
hlist_add_head()s here.

Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: pass a 16bit long flag argument to tt_global_add()
Antonio Quartulli [Thu, 18 Apr 2013 13:13:01 +0000 (15:13 +0200)]
batman-adv: pass a 16bit long flag argument to tt_global_add()

it may be the case that we want to store some local TT client flags in a global
entry, therefore the tt_global_add needs to get a proper argument for this

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: don't deal with NET_IP_ALIGN manually
Antonio Quartulli [Tue, 2 Apr 2013 20:28:44 +0000 (22:28 +0200)]
batman-adv: don't deal with NET_IP_ALIGN manually

Instead of dealing with NET_IP_ALIGN during allocation and
headroom reservation, it is possible to use
netdev_alloc_skb_ip_align() which transparently allocate
and reserve the correct amount of data

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: refactor batadv_tt_local_event()
Antonio Quartulli [Wed, 3 Apr 2013 09:15:33 +0000 (11:15 +0200)]
batman-adv: refactor batadv_tt_local_event()

Instead of passing a generic combination of flags as
argument, it is easier to pass the entire tt_common
structure (containing the flags already set) plus a
bitfield of event flags that will be unified with
the already existing ones before inserting the client
in the event queue.
In this way invocations of the modified function can be
simplified.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c
Antonio Quartulli [Wed, 17 Apr 2013 15:44:43 +0000 (17:44 +0200)]
batman-adv: move batadv_slide_own_bcast_window to bat_iv_ogm.c

batadv_slide_own_bcast_window() is used only in bat_iv_ogm.c
and it is currently touching only batman_iv specific
attributes.

Move it into bat_iv_ogm.c and make it static.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: move ring_buffer helper functions in bat_iv_ogm
Antonio Quartulli [Mon, 8 Apr 2013 07:38:12 +0000 (09:38 +0200)]
batman-adv: move ring_buffer helper functions in bat_iv_ogm

the two lonely ring_buffer helper functions are used by the
bat_iv_ogm module only and therefore they can be moved
inside it.

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: use eth_hdr() when it makes sense
Antonio Quartulli [Mon, 8 Apr 2013 13:08:18 +0000 (15:08 +0200)]
batman-adv: use eth_hdr() when it makes sense

Instead of casting the result of skb_mac_header() to
"struct ethhdr *" every time, the eth_hdr inline function
can be use to beautify the code and improve its readability.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: don't initialise batman_iv private members in hard-interface.c
Antonio Quartulli [Tue, 2 Apr 2013 10:16:53 +0000 (12:16 +0200)]
batman-adv: don't initialise batman_iv private members in hard-interface.c

hard-interface.c has to do not contain any routing algorithm
specific code.

Allocate the hard-interface with kzalloc() and remove any
useless and algorithm specific member initialisation

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: do not silently ignore wrong condition
Antonio Quartulli [Sat, 30 Mar 2013 16:22:00 +0000 (17:22 +0100)]
batman-adv: do not silently ignore wrong condition

Only one neigh_node per orig_node should match a given
neighbor address, therefore, if more than one matching
neigh_node is found, a WARNING has to be triggered to let
the user know that something is wrong in the originator
state instead of silently skipping the error.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: don't check compat version twice
Antonio Quartulli [Thu, 28 Mar 2013 13:21:12 +0000 (14:21 +0100)]
batman-adv: don't check compat version twice

Compatibility version is checked upon packet reception
before calling any handler. For this reason it does need to
be checked once more in the handler itself.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: don't check the source address twice
Antonio Quartulli [Mon, 25 Mar 2013 21:27:00 +0000 (22:27 +0100)]
batman-adv: don't check the source address twice

The source address has already been checked in
batadv_check_management_packet() upon packet reception and
therefore it does not need to be checked again in
ogm_process()

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: slightly improve neighbor creation debug message
Antonio Quartulli [Mon, 25 Mar 2013 12:54:45 +0000 (13:54 +0100)]
batman-adv: slightly improve neighbor creation debug message

print the interface along with the new neighbor mac address

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: drop useless argument seqno in neighbor creation
Antonio Quartulli [Mon, 25 Mar 2013 12:49:46 +0000 (13:49 +0100)]
batman-adv: drop useless argument seqno in neighbor creation

the sequence number is not stored in struct neigh_node,
therefore there is no need to pass such value to the
neigh_node creation procedure.

At the moment the value is only used by a debug message, but
given the fact that the seqno is not related to the neighbor
object, it is better to print it elsewhere.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
11 years agobatman-adv: fix typos in kernel doc & comments
Marek Lindner [Sun, 10 Mar 2013 11:29:15 +0000 (19:29 +0800)]
batman-adv: fix typos in kernel doc & comments

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: send each broadcast only once on non-wireless interfaces
Matthias Schiffer [Sat, 9 Mar 2013 22:14:23 +0000 (23:14 +0100)]
batman-adv: send each broadcast only once on non-wireless interfaces

While it makes sense to send each broadcast thrice on 802.11 (WLAN) interfaces
as broadcasts are often unreliable on these, there is no reason to do so on
other interface types.

The increased the overhead can be harmful on low-bandwidth links like VPN
connections over slow internet lines, therefore it is better to reduce the
number of broadcast packets sent on non-wireless links to one.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agobatman-adv: split batadv_is_wifi_iface() into two functions
Matthias Schiffer [Sat, 9 Mar 2013 22:14:22 +0000 (23:14 +0100)]
batman-adv: split batadv_is_wifi_iface() into two functions

Previously batadv_is_wifi_iface() did two things at once: looking up a
net_device from an interface index, and determining if it is a wifi device.

The second part is useful itself when the caller already has a net_device
reference.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
11 years agonet: Fix build warnings after mac_header and transport_header became __u16.
David S. Miller [Tue, 28 May 2013 20:15:50 +0000 (13:15 -0700)]
net: Fix build warnings after mac_header and transport_header became __u16.

net/core/skbuff.c: In function ‘__alloc_skb_head’:
net/core/skbuff.c:203:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
net/core/skbuff.c: In function ‘__alloc_skb’:
net/core/skbuff.c:279:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
net/core/skbuff.c:280:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
net/core/skbuff.c: In function ‘build_skb’:
net/core/skbuff.c:348:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
net/core/skbuff.c:349:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoarp: flush arp cache on IFF_NOARP change
Timo Teräs [Tue, 28 May 2013 01:30:23 +0000 (01:30 +0000)]
arp: flush arp cache on IFF_NOARP change

IFF_NOARP affects what kind of neighbor entries are created
(nud NOARP or nud INCOMPLETE). If the flag changes, flush the arp
cache to refresh all entries.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
v2->v3: shortened notifier_info struct name
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: pass changed flags along with NETDEV_CHANGE event
Jiri Pirko [Tue, 28 May 2013 01:30:22 +0000 (01:30 +0000)]
net: pass changed flags along with NETDEV_CHANGE event

Use new netdevice notifier infrastructure to pass along changed flags.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
v2->v3: shortened notifier_info struct name
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: pass info struct via netdevice notifier
Jiri Pirko [Tue, 28 May 2013 01:30:21 +0000 (01:30 +0000)]
net: pass info struct via netdevice notifier

So far, only net_device * could be passed along with netdevice notifier
event. This patch provides a possibility to pass custom structure
able to provide info that event listener needs to know.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
v2->v3: fix typo on simeth
shortened dev_getter
shortened notifier_info struct name
v1->v2: fix notifier_call parameter in call_netdevice_notifier()
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: remove ifenslave.c from kernel source
Cong Wang [Mon, 27 May 2013 15:49:16 +0000 (15:49 +0000)]
bonding: remove ifenslave.c from kernel source

As Stephen proposed:
Since bonding supports configuration via iproute (netlink) and sysfs, I think
it is time to purge the old ifenslave code out of Documentation/networking
and update the documentation.

Suggested-by: Stephen Hemminger <stephen@networkplumber.org>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Jay Vosburgh <fubar@us.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agodoc:networking: Fix typo in documentation/networking
Masanari Iida [Fri, 24 May 2013 07:05:59 +0000 (07:05 +0000)]
doc:networking: Fix typo in documentation/networking

Correct spelling typo

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobonding: allow xmit hash policy change while bond dev is up
Nikolay Aleksandrov [Fri, 24 May 2013 00:59:47 +0000 (00:59 +0000)]
bonding: allow xmit hash policy change while bond dev is up

Since the xmit_hash_policy pointer is always valid and not dependent on
anything, we can change it while the bond device is up and running. The
only downside would be the out of order packets but that is a small price
to pay.

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet/phy: Use module_spi_driver in spi_ks8995.c
Sachin Kamat [Mon, 27 May 2013 01:51:39 +0000 (01:51 +0000)]
net/phy: Use module_spi_driver in spi_ks8995.c

module_spi_driver() removes some boilerplate and makes the code
simpler.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonetpoll: remove return value from netpoll_rx_disable()
dingtianhong [Mon, 27 May 2013 19:53:31 +0000 (19:53 +0000)]
netpoll: remove return value from netpoll_rx_disable()

The netpoll_rx_disable() will always return 0, it is no use and looks wordy,
so remove the unnecessary code and get rid of it in _dev_open and _dev_close.

Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: micrel : ks8851-ml: add dt support
Jean-Christophe PLAGNIOL-VILLARD [Thu, 23 May 2013 23:01:22 +0000 (23:01 +0000)]
net: micrel : ks8851-ml: add dt support

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'mpls_gso'
David S. Miller [Tue, 28 May 2013 05:51:06 +0000 (22:51 -0700)]
Merge branch 'mpls_gso'

Simon Horman says:

====================
In the case where a non-MPLS packet is received and an MPLS stack is
added it may well be the case that the original skb is GSO but the
NIC used for transmit does not support GSO of MPLS packets.

The aim of this short series is to provide GSO in software for MPLS packets
whose skbs are GSO.

Change since v4:

Update first patch of the series to use 16 bits for all *_headers
rather than just inner_*_headers

Simon Horman (2):
  net: Use 16bits for *_headers fields of struct skbuff
  MPLS: Add limited GSO support
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMPLS: Add limited GSO support
Simon Horman [Thu, 23 May 2013 21:02:52 +0000 (21:02 +0000)]
MPLS: Add limited GSO support

In the case where a non-MPLS packet is received and an MPLS stack is
added it may well be the case that the original skb is GSO but the
NIC used for transmit does not support GSO of MPLS packets.

The aim of this code is to provide GSO in software for MPLS packets
whose skbs are GSO.

SKB Usage:

When an implementation adds an MPLS stack to a non-MPLS packet it should do
the following to skb metadata:

* Set skb->inner_protocol to the old non-MPLS ethertype of the packet.
  skb->inner_protocol is added by this patch.

* Set skb->protocol to the new MPLS ethertype of the packet.

* Set skb->network_header to correspond to the
  end of the L3 header, including the MPLS label stack.

I have posted a patch, "[PATCH v3.29] datapath: Add basic MPLS support to
kernel" which adds MPLS support to the kernel datapath of Open vSwtich.
That patch sets the above requirements in datapath/actions.c:push_mpls()
and was used to exercise this code.  The datapath patch is against the Open
vSwtich tree but it is intended that it be added to the Open vSwtich code
present in the mainline Linux kernel at some point.

Features:

I believe that the approach that I have taken is at least partially
consistent with the handling of other protocols.  Jesse, I understand that
you have some ideas here.  I am more than happy to change my implementation.

This patch adds dev->mpls_features which may be used by devices
to advertise features supported for MPLS packets.

A new NETIF_F_MPLS_GSO feature is added for devices which support
hardware MPLS GSO offload.  Currently no devices support this
and MPLS GSO always falls back to software.

Alternate Implementation:

One possible alternate implementation is to teach netif_skb_features()
and skb_network_protocol() about MPLS, in a similar way to their
understanding of VLANs. I believe this would avoid the need
for net/mpls/mpls_gso.c and in particular the calls to
__skb_push() and __skb_push() in mpls_gso_segment().

I have decided on the implementation in this patch as it should
not introduce any overhead in the case where mpls_gso is not compiled
into the kernel or inserted as a module.

MPLS GSO suggested by Jesse Gross.
Based in part on "v4 GRE: Add TCP segmentation offload for GRE"
by Pravin B Shelar.

Cc: Jesse Gross <jesse@nicira.com>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: Use 16bits for *_headers fields of struct skbuff
Simon Horman [Thu, 23 May 2013 21:02:51 +0000 (21:02 +0000)]
net: Use 16bits for *_headers fields of struct skbuff

In order to mitigate ongoing incresase in the size of struct skbuff
use 16 bit integer offsets rather than pointers for inner_*_headers.

This appears to reduce the size of struct skbuff from 0xd0 to 0xc0
bytes on x86_64 with the following all unset.

CONFIG_XFRM
CONFIG_NF_CONNTRACK
CONFIG_NF_CONNTRACK_MODULE
NET_SKBUFF_NF_DEFRAG_NEEDED
CONFIG_BRIDGE_NETFILTER
CONFIG_NET_SCHED
CONFIG_IPV6_NDISC_NODETYPE
CONFIG_NET_DMA
CONFIG_NETWORK_SECMARK

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: bcm63xx: report Broadcom BCM63xx PHYs as internal
Florian Fainelli [Thu, 23 May 2013 01:11:13 +0000 (01:11 +0000)]
phy: bcm63xx: report Broadcom BCM63xx PHYs as internal

The Broadcom BCM63xx PHY driver is for the SoC internal PHYs, flag these
as internal PHY devices.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agophy: allow drivers to flag a PHY device as internal
Florian Fainelli [Thu, 23 May 2013 01:11:12 +0000 (01:11 +0000)]
phy: allow drivers to flag a PHY device as internal

libphy currently always reports a PHY as an external transceiver from
the ethtool output. This is inaccurate, because some drivers should be
able to tell that a PHY device is an internal transceiver of an Ethernet
MAC. Add a new flag (PHY_IS_INTERNAL) which can be set by PHY drivers
just like other flags, and a corresponding helper: phy_is_internal()
which can be used by networking drivers to query if a given
PHY device is internal.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: ethtool: disambiguate XCVR_* meaning
Florian Fainelli [Thu, 23 May 2013 01:11:11 +0000 (01:11 +0000)]
net: ethtool: disambiguate XCVR_* meaning

Add a comment which explains the real meaning of XCVR_INTERNAL (PHY and
Ethernet MAC in the same package/die) and XCVR_EXTERNAL (PHY and
Ethernet MAC in a different package/die). Most if not all of the drivers
setting their transceiver type already do it the way the comment
describes it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: wan: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 27 May 2013 19:08:17 +0000 (19:08 +0000)]
net: wan: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: wireless: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 27 May 2013 19:07:11 +0000 (19:07 +0000)]
net: wireless: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: irda: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 27 May 2013 19:03:49 +0000 (19:03 +0000)]
net: irda: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agonet: ethernet: remove unnecessary platform_set_drvdata()
Jingoo Han [Mon, 27 May 2013 19:01:12 +0000 (19:01 +0000)]
net: ethernet: remove unnecessary platform_set_drvdata()

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Tested-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agoMerge branch 'fec_regulator_suspend_resume'
David S. Miller [Tue, 28 May 2013 05:30:23 +0000 (22:30 -0700)]
Merge branch 'fec_regulator_suspend_resume'

Fabio Estevam says:

====================
This series provides support for controlling the PHY regulator in suspend/resume.

Fabio Estevam (5):
  fec: Place the phy regulator in the private structure
  fec: Invert the order of error path sequence
  fec: Disable the PHY regulator on error and removal
  fec: Remove irqs first
  fec: Handle the regulator in suspend/resume
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agofec: Handle the regulator in suspend/resume
Fabio Estevam [Mon, 27 May 2013 03:48:33 +0000 (03:48 +0000)]
fec: Handle the regulator in suspend/resume

In order to save power, let's disable the regulator in the suspend function and
enable it in resume.

Tested on a mx28evk board.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agofec: Remove irqs first
Fabio Estevam [Mon, 27 May 2013 03:48:32 +0000 (03:48 +0000)]
fec: Remove irqs first

During probe the clocks are enabled prior than the acquiring the interrupts.

In the remove function we need to do the opposite: first remove the interrupts
and then disable the clocks.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agofec: Disable the PHY regulator on error and removal
Fabio Estevam [Mon, 27 May 2013 03:48:31 +0000 (03:48 +0000)]
fec: Disable the PHY regulator on error and removal

In the case of error during probe, disable the PHY regulator.

Do the same in fec_drv_remove().

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agofec: Invert the order of error path sequence
Fabio Estevam [Mon, 27 May 2013 03:48:30 +0000 (03:48 +0000)]
fec: Invert the order of error path sequence

Currently when fec_enet_init fails it jumps to 'failed_init' error path, which
will attemp to free the interrupts.

This is wrong because at this point the interrupts have not even been acquired.

Swap failed_init/failed_irq to fix the error path.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agofec: Place the phy regulator in the private structure
Fabio Estevam [Mon, 27 May 2013 03:48:29 +0000 (03:48 +0000)]
fec: Place the phy regulator in the private structure

Instead of using a local reg_phy structure, let's put it inside the private
structure, so that we are able to have access to the regulator structure even
when we are outside fec_probe().

This is in preparation for controlling the FEC PHY regulator in the suspend and
resume functions.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobe2net: Trim padded packets for Lancer
Somnath Kotur [Sun, 26 May 2013 21:09:06 +0000 (21:09 +0000)]
be2net: Trim padded packets for Lancer

For padded packets, Lancer computes incorrect checksum. The workaround is
to trim such packets. This workaround is mainly for IPv4 packets.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobe2net: Pad skb to meet min Tx pkt size in lancer
Somnath Kotur [Sun, 26 May 2013 21:08:47 +0000 (21:08 +0000)]
be2net: Pad skb to meet min Tx pkt size in lancer

In Lancer, packets that are 32 bytes or less may cause a transmit stall.
The work-around is to pad such packets to a 36 byte length.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
11 years agobe2net: cleanup be_get_drvinfo()
Somnath Kotur [Sun, 26 May 2013 21:08:36 +0000 (21:08 +0000)]
be2net: cleanup be_get_drvinfo()

Removing the be_cmd_get_fw_ver() query from be_get_drvinfo() and invoking
the same from be_setup() and/or post firmware download.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>