be2net: fix erx->rx_drops_no_frags wrap around

The rx_drops_no_frags HW counter for RSS rings is 16bits in HW and can
wraparound often. Maintain a 32-bit accumulator in the driver to prevent
frequent wraparound.

Also, incorporated Eric's feedback to use ACCESS_ONCE() for the accumulator
write.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

be2net: get rid of memory mapped pci-cfg space address

Get rid of adapter->pcicfg and its use. Use pci_config_read/write_dword()
instead.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

be2net: Fix race in posting rx buffers.

There is a possibility of be_post_rx_frags() being called simultaneously from
both be_worker() (when rx_post_starved) and be_poll_rx() (when rxq->used is 0).
This can be avoided by posting rx buffers only when some completions have been
reaped.

Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rps: support IPIP encapsulation

Skip IPIP header to get proper layer-4 information.

Like GRE tunnels, this only works if rxhash is not already provided by
the device itself (ethtool -K ethX rxhash off), to allow kernel compute
a software rxhash.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'batman-adv/next' of git://git.open-mesh.org/linux-merge

net: add APIs for manipulating skb page fragments.

The primary aim is to add skb_frag_(ref|unref) in order to remove the use of
bare get/put_page on SKB pages fragments and to isolate users from subsequent
changes to the skb_frag_t data structure.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next

net: vlan: goto another_round instead of calling __netif_receive_skb

Now, when vlan tag on untagged in non-accelerated path is stripped from
skb, headers are reset right away. Benefit from that and avoid calling
__netif_receive_skb recursivelly and just use another_round.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/wan/hdlc_ppp: use break in switch

We'll either hit one of the case labels or the default in the switch
and in all cases do we then 'goto out' and we also have a 'goto out'
after the switch that is redundant. Change to just use break in the
case statements and leave the 'goto out' after the lop for everyone to
hit.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-next into for-davem

Conflicts:
drivers/staging/ath6kl/miscdrv/ar3kps/ar3kpsparser.c
drivers/staging/ath6kl/os/linux/ar6000_drv.c

batman-adv: merge update_transtable() into tt related code

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: reuse tt_len() to calculate tt buffer length

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Antonio Quartulli <ordex@autistici.org>

batman-adv: print client flags in the local/global transtables output

Since clients can have several flags on or off, this patches make them
appear in the local/global transtable output so that they can be checked
for debugging purposes.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: implement AP-isolation on the sender side

If a node has to send a packet issued by a WIFI client to another WIFI client,
the packet is dropped.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: implement AP-isolation on the receiver side

When a node receives a unicast packet it checks if the source and the
destination client can communicate or not due to the AP isolation

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: detect clients connected through a 802.11 device

Clients connected through a 802.11 device are now marked with the
TT_CLIENT_WIFI flag. This flag is also advertised with the tt
announcement.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: correct several typ0s in the comments

Several typos have been corrected and some sentences have been rephrased

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

batman-adv: hash_add() has to discriminate on the return value

hash_add() returns 0 on success while returns -1 either on error and on
entry already present. The caller could use such information to select
its behaviour. For this reason it is useful that hash_add() returns -1
in case on error and returns 1 in case of entry already present.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

Merge branch 'master' of /linux/kernel/git/jkirsher/net-next

Conflicts:
drivers/net/ethernet/intel/e1000e/netdev.c

net: Preserve ooo_okay when copying skb header

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

dm9000: define debug level as a module parameter

This change allows to get driver specific debug messages output
providing a module parameter. As far as the maximum level of verbosity
is too high, it is demoted by default.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'master' of /linux/kernel/git/davem/net

tg3: Update version to 3.120

This patch updates the tg3 version to 3.120.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tg3: Add external loopback support to selftest

This patch adds external loopback support to tg3's ethtool selftest.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tg3: Restructure tg3_test_loopback

The tg3_test_loopback() function is starting to get more complicated as
more loopback tests are added.  This patch cleans up the code.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tg3: Pull phy int lpbk setup into separate func

This patch pulls out the internal phy loopback setup code into a
separate function.  This cleans up the loopback test code and makes it
available for NETIF_F_LOOPBACK support later.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tg3: Consilidate MAC loopback code

The driver puts the device into MAC loopback in two places in the
driver.  This patch consolidates the code into a single routine.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tg3: Remove dead code

Now that CPMU devices don't do MAC loopback, all the CPMU power saving
mode adjustments are unneeded.  This patch removes the dead code.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qlge: Adding Maintainer.

Signed-off-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: add the comment for skb->l4_rxhash

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ixgbe: Cleanup FCOE and VLAN handling in xmit_frame_ring

This change is meant to further cleanup the transmit path by streamlining
some of the VLAN and FCOE/DCB tasks in the transmit path.  In addition it
adds code for support software VLANs in the event that they are used in
conjunction with DCB and/or FCOE.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

ixgbe: replace reference to CONFIG_FCOE with IXGBE_FCOE

CONFIG_FCOE is not the correct define to check since it is possible for it
to be CONFIG_FCOE_MODULE, as such the reference to it should be replaced
with IXGBE_FCOE.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

ixgbe: Refactor transmit map and cleanup routines

This patch implements a partial refactor of the TX map/queue and cleanup
routines.  It merges the map and queue functionality and as a result
improves the transmit performance by avoiding unnecessary reads from memory.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

ixgbe - DDP last user buffer - error to warn

Change the error message in the last DDP user buffer to warn_once

Signed-off-by: Amir Hanania <amir.hanania@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

ipv6: Fix ipv6_getsockopt for IPV6_2292PKTOPTIONS

IPV6_2292PKTOPTIONS is broken for 32-bit applications running
in COMPAT mode on 64-bit kernels.

The same problem was fixed for IPv4 with the patch:
ipv4: Fix ip_getsockopt for IP_PKTOPTIONS,
commit dd23198e58cd35259dd09e8892bbdb90f1d57748

Signed-off-by: Sorin Dumitru <sdumitru@ixiacom.com>
Signed-off-by: Daniel Baluta <dbaluta@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

e1000e: bump driver version number

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

e1000e: convert driver to use extended descriptors

Some features currently not supported by the driver (e.g. RSS) require the
use of extended descriptors, but the driver is setup to only use legacy
descriptors in all modes except for when jumbo frames are enabled on some
parts.  Convert the driver to always use extended descriptors in order to
enable the forthcoming support of these other features.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

net: rps: support PPPOE session messages

Inspect the payload of PPPOE session messages for the 4 tuples to generate
skb->rxhash.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: rps: support 802.1Q

For the 802.1Q packets, if the NIC doesn't support hw-accel-vlan-rx, RPS
won't inspect the internal 4 tuples to generate skb->rxhash, so this kind
of traffic can't get any benefit from RPS.

This patch adds the support for 802.1Q to RPS.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

be2net: Storing the 'vid' got by the grp5 event instead of storing the vlan_tag

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

bnx2x: downgrade Max BW error message to debug

There are valid configurations where Max BW is configured to zero for
some VNs.
Print the message only if debugging is enabled and do not call the
configuration "illegal".

[v2: use DP(), not BNX2X_DBG_ERR(); recommended by Eilon Greenstein.]

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: fix IBM EMAC driver after rename.

In commit 9aa3283595451ca093500ff0977b106e1f465586 (ehea/ibm*: Move the
IBM drivers) the IBM_NEW_EMAC* were renames to IBM_EMAC*

The conversion was incomplete so that even if the driver was added to
the .config it wasn't built, but there were no errors).  In this commit
we also update the various defconfigs that use EMAC to use the new
Kconfig symbol, and explicitly add the NET_VENDOR_IBM guard.

We do not explicitly select the Kconfig dependencies, as this would force
EMAC on.  Doing it in the defconfig allows more flexibility.

Tested on a canyondlands board.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

NET: Korina: Don't include <asm/segment.h>

Korina.c is a MIPS-specific SOC driver and <asm/segment> is empty on
MIPS since 2.1.7 ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS: qlcnic

Signed-off-by: Anirban Chakraborty <anirban.chakraborty@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: netdev-features.txt update to Documentation/networking/00-INDEX

Update netdev-features.txt entry in 00-INDEX to incorporate
feedback by Michał Mirosław.

v2: restored tabs that were inadvertently changed to spaces in v1.
sorry for the error.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vlan: reset headers on accel emulation path

It's after all necessary to do reset headers here. The reason is we
cannot depend that it gets reseted in __netif_receive_skb once skb is
reinjected. For incoming vlanids without vlan_dev, vlan_do_receive()
returns false with skb != NULL and __netif_reveive_skb continues, skb is
not reinjected.

This might be good material for 3.0-stable as well

Reported-by: Mike Auty <mike.auty@gmail.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

MAINTAINERS: change netxen_nic maintainers

I will no longer maintain netxen_nic driver.
Sony Chacko and Rajesh Borundia are taking over.

Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

forcedeth: call vlan_mode only if hw supports vlans

If hw does not support vlans, dont call nv_vlan_mode because it has no point.
I believe that this should fix issues on older non-vlan supportive
chips (like Ingo has).

Reported-ty: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Add flexcan device support for p1010rdb.

Allow the p1010 processor to select the flexcan network driver.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>,
Acked-by: Wolfgang Grandegger <wg@grandegger.com>,
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: socketcan-core@lists.berlios.de,
Cc: netdev@vger.kernel.org,
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Prefer device tree clock frequency if available.

If our CAN device's device tree node has a clock-frequency property,
then use that value for the can devices clock frequency.  If not, fall
back to asking the platform/mach code for the clock frequency associated
with the flexcan device.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>,
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Marc Kleine-Budde <mkl@pengutronix.de>,
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: socketcan-core@lists.berlios.de,
Cc: netdev@vger.kernel.org,
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Add of_match to platform_device definition.

On powerpc, the OpenFirmware devices are not matched without specifying
an of_match array.  Introduce that array as that is used for matching
on the Freescale P1010 processor.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: socketcan-core@lists.berlios.de
Cc: netdev@vger.kernel.org
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Fix up fsl-flexcan device tree binding.

This patch cleans up the documentation of the device-tree binding for
the Flexcan devices on Freescale's PowerPC and ARM cores. Extra
properties are not used by the driver so we are removing them.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>,
Acked-by: Wolfgang Grandegger <wg@grandegger.com>,
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: socketcan-core@lists.berlios.de,
Cc: netdev@vger.kernel.org,
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Abstract off read/write for big/little endian.

Make flexcan driver handle register reads in the appropriate endianess.
This was a basic search and replace and then define some inlines.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: socketcan-core@lists.berlios.de
Cc: netdev@vger.kernel.org
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

flexcan: Remove #include <mach/clock.h>

powerpc does not have a mach-####/clock.h.  When testing, I found neither
arm nor powerpc needed the mach/clock.h at all so I removed it.

Signed-off-by: Robin Holt <holt@sgi.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Wolfgang Grandegger <wg@grandegger.com>
Cc: U Bhaskar-B22300 <B22300@freescale.com>
Cc: socketcan-core@lists.berlios.de
Cc: netdev@vger.kernel.org
Cc: PPC list <linuxppc-dev@lists.ozlabs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: remove ndo_set_multicast_list callback

Remove no longer used operation.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: remove use of ndo_set_multicast_list in drivers

replace it by ndo_set_rx_mode

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: introduce IFF_UNICAST_FLT private flag

Use IFF_UNICAST_FTL to find out if driver handles unicast address
filtering. In case it does not, promisc mode is entered.

Patch also fixes following drivers:
stmmac, niu: support uc filtering and yet it propagated
ndo_set_multicast_list
bna, benet, pxa168_eth, ks8851, ks8851_mll, ksz884x : has set
ndo_set_rx_mode but do not support uc filtering

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bonding: use ndo_change_rx_flags callback

Benefit from use of ndo_change_rx_flags in handling change of promisc
and allmulti. No need to store previous state locally.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'can/mscan' of git://git.pengutronix.de/git/mkl/linux-2.6

via-velocity: remove non-tagged packet filtering

It's undesired to filter untagged packets at any time. So simply remove this.

Reported-by: Stephan Bärwolf <stephan.baerwolf@tu-ilmenau.de>
Tested-by: Stephan Bärwolf <stephan.baerwolf@tu-ilmenau.de>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bonding:reset backup and inactive flag of slave

Eduard Sinelnikov (eduard.sinelnikov@gmail.com) found that if we change
bonding mode from active backup to round robin, some slaves are still keeping
"backup", and won't transmit packets.

As Jay Vosburgh(fubar@us.ibm.com) pointed out that we can work around that by
removing the bond_is_active_slave() check, because the "backup" flag is only
meaningful for active backup mode.

But if we just simply ignore the bond_is_active_slave() check,
the transmission will work fine, but we can't maintain the correct value of
"backup" flag for each slaves, though it is meaningless for other mode than
active backup.

I'd like to reset "backup" and "inactive" flag in bond_open,
thus we can keep the correct value of them.

As for bond_is_active_slave(), I'd like to prepare another patch to handle it.

V2:
Use C style comment.
Move read_lock(&bond->curr_slave_lock).
Replace restore with reset, for active backup mode, it means "restore",
but for other modes, it means "reset".

Signed-off-by: Weiping Pan <panweiping3@gmail.com>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net_sched: fix port mirror/redirect stats reporting

When a redirected or mirrored packet is dropped by the target
device we need to record statistics.

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rps: Inspect GRE encapsulated packets to get flow hash

Crack open GRE packets in __skb_get_rxhash to compute 4-tuple hash on
in encapsulated packet.  Note that this is used only when the
__skb_get_rxhash is taken, in particular only when the device does
not compute provide the rxhash (ie. feature is disabled).

This was tested by creating a single GRE tunnel between two 16 core
AMD machines.  200 netperf TCP_RR streams were ran with 1 byte
request and response size.

Without patch: 157497 tps, 50/90/99% latencies 1250/1292/1364 usecs
With patch: 325896 tps, 50/90/99% latencies 603/848/1169

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rps: Infrastructure in __skb_get_rxhash for deep inspection

Basics for looking for ports in encapsulated packets in tunnels.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rps: Add flag to skb to indicate rxhash is based on L4 tuple

The l4_rxhash flag was added to the skb structure to indicate
that the rxhash value was computed over the 4 tuple for the
packet which includes the port information in the encapsulated
transport packet.  This is used by the stack to preserve the
rxhash value in __skb_rx_tunnel.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

rps: Some minor cleanup in get_rps_cpus

Use some variables for clarity and extensibility.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnx2x: Use pr_fmt and message logging cleanups

Add pr_fmt(fmt) KBUILD_MODNAME ": " to prefix messages with "bnx2x: ".
Remove #define DP_LEVEL and use pr_notice.
Repeating KERN_<LEVEL> isn't necessary in multi-line printks.
printk macro neatening, use fmt and ##__VA_ARGS__.
Coalesce long formats.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnx2x: Coalesce pr_cont uses and fix DP typos

Uses of pr_cont should be avoided where reasonably possible
because they can be interleaved by other threads and processes.

Coalesce pr_cont uses.

Fix typos, duplicated words and spacing in DP uses caused
by split multi-line formats.  Coalesce some of these
split formats.  Add missing terminating newlines to DP uses.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnx2x: Remove local defines for %pM and mac address

Use %pM and mac address directly instead.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: Note common alternate exit condition for interrupt coalescing

Many implementations ignore the value of max_frames and do not
treat usecs == 0 as special.  Document this as deprecated.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: Explicitly state the exit condition for interrupt coalescing

Also explicitly state how to disable interrupt coalescing.

Remove the now-redundant text from field descriptions.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: Correct description of 'max_coalesced_frames' fields

The current descriptions state that these fields specify 'How many
packets to delay ... after a packet ...' which implies that the
hardware should wait for (max_coalesced_frames + 1) completions before
generating an interrupt.  It is also stated that setting both this
field and the corresponding 'coalesce_usecs' field to 0 is invalid.
Together, this implies that the hardware must always be configured
to delay a completion IRQ for at least 1 usec or 1 more completion.

I believe that the addition of 1 is not intended, and David Miller
confirms that the original implementation (in tg3) does not do this.
Clarify the descriptions of these fields to avoid this interpretation.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: Specify what kind of coalescing struct ethtool_coalesce covers

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ethtool: Reformat struct ethtool_coalesce comments into kernel-doc format

This reorders and duplicates some wording, but should make no
substantive changes.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

sit tunnels: propagate IPv6 transport class to IPv4 Type of Service

sit tunnels (IPv6 tunnel over IPv4) do not implement the "tos inherit"
case to copy the IPv6 transport class byte from the inner packet to
the IPv4 type of service byte in the outer packet. By contrast, ipip
tunnels and GRE tunnels do.

This patch, adapted from the similar code in net/ipv4/ipip.c and
net/ipv4/ip_gre.c, implements that.

This patch applies to 3.0.1, and has been tested on that version.

Signed-off-by: Lionel Elie Mamane <lionel@mamane.lu>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: Fix sungem_phy sharing.

Since sungem_phy is used by multiple, unrelated, drivers make it
build as a real module under drivers/net.

depmod will pick up the symbol dependency and make sure sungem_phy.ko
gets loaded any time sungem.ko or spider_net.ko is loaded.

Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

sungem: sungem_phy.h moved

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/can/mscan: add __iomem annotations

This patch fixes the following sparse warning by adding the missing
__iomem annotation.

drivers/net/can/mscan/mscan.c:73:32: warning: incorrect type in argument 1 (different address spaces)
drivers/net/can/mscan/mscan.c:73:32:    expected unsigned char volatile [noderef] [usertype] <asn:2>*addr
drivers/net/can/mscan/mscan.c:73:32:    got unsigned char *<noident>

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

net: Move sungem_phy.h under include/linux

Fixes build failures of the spider_net driver because it tries
to use a convoluted path to include this header.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

gianfar: reduce stack usage in gianfar_ethtool.c

  drivers/net/gianfar_ethtool.c:765: warning: the frame size of 2048 bytes is larger than 1024 bytes

Signed-off-by: Wang Shaoyan <wangshaoyan.pt@taobao.com>
Reviewed-and-tested-by: Sebastian Pöhn <sebastian.poehn@belden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: minor update to Documentation/networking/scaling.txt

Incorporate last comments about hyperthreading, interrupt coalescing and
the definition of cache domains into the network scaling document scaling.txt

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: add missing entries to Documentation/networking/00-INDEX

A simple janitor duty patch that adds a one sentence overview to
00-INDEX for all files that lacked it.

- does not add entries for subdirectories
- does not modify existing entries.

Signed-off-by: David S. Miller <davem@davemloft.net>

gianfar: prevent buggy hw rx vlan tagging

On some buggy chips, "vlan tag present" flag is set which causes packet
loss. Fix this by checking if rx vlan accel is enabled in features.

Reported-by: Michael Guntsche <mguntsche@gmail.com>
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: sh_eth: Fix build by forgot including linux/interrupt.h

By a6b7a407865aab9f849dd99a71072b7cd1175116, remove interrupt.h
from netdevice.h. But this forget to revise sh_eth.

This fix the build failure.

error: expected '=', ',', ';', 'asm' or '__attribute__' before 'sh_eth_interrupt'
error: implicit declaration of function 'request_irq'
error: 'sh_eth_interrupt' undeclared (first use in this function)
error: (Each undeclared identifier is reported only once
drivers/net/sh_eth.c:1386: error: for each function it appears in.)
error: 'IRQF_SHARED' undeclared (first use in this function)
error: implicit declaration of function 'free_irq'

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/can/sja1000/plx_pci.c: eliminate double free

In this code, the failure_cleanup label calls the function
plx_pci_del_card, which frees everything in the card->net_dev array.  dev
is placed in this array immediately after allocation, so the two subsequent
jumps to failure_cleanup should not also call free_sja1000dev, but the
second one does.

If plx_pci_check_sja1000 fails, then free_sja1000dev is also called on
dev.  Because dev is already in the card->net_dev array, this implies that
when plx_pci_del_card is later called, it may get freed again.  So that
entry is reset to NULL after the free.

Finally, if there is a problem with one channel, there will be a hole in the
array.  card->channels counts the number of channels that have succeeded,
and does not keep track of the index of the largest element in the array
that is valid.  So the loop in plx_pci_del_card is changed to go up to
PLX_PCI_MAX_CHAN, which is only 2.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

usbnet/cdc_ncm: Don't use stack variables for DMA

The cdc_ncm driver still has a few places where stack variables are
passed to the cdc_ncm_do_request function.  This triggers a stack trace in
lib/dma-debug.c if the CONFIG_DEBUG_DMA_API option is set.

Adjust these calls to pass parameters that have been allocated with
kzalloc.

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vmxnet3: Don't enable vlan filters in promiscuous mode.

The vmxnet3 driver enables vlan filters if filtering is enabled for
any vlan.  In promiscuous mode the filter table is cleared to in
order to disable filtering.  However, if a vlan device is subsequently
created that vlan will be added to the filter, re-engaging it.  As a
result, not only do we not see all the vlans in promiscuous mode, we
don't even see vlans for which a filter was previously created.

CC: Scott J. Goldman <scottjg@vmware.com>
CC: Shreyas Bhatewara <sbhatewara@vmware.com>
CC: VMware PV-Drivers <pv-drivers@vmware.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

staging: remove ath6kl

ath6kl is now in drivers/net/wireless/ath so the staging driver
is not supported anymore and should be removed.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'master' of /linux/kernel/git/jkirsher/net

e1000e: workaround invalid Tx/Rx tail descriptor register write

When the Manageability Engine (ME) is enabled on 82579, it periodically
accesses some MAC CSR registers.  There is an arbiter in hardware which
prevents simultaneous access of these registers by the host software, i.e.
the driver.  There is a hardware bug in the aribter that signals a host
access of the registers later than it actually happens.  A write of the
Transmit or Receive Descriptor Tail register could result in an incorrect
value if the driver and ME perform simultaneous accesses which could result
in an access to an invalid memory address.  This would return an
Unsupported Request which could hang the hardware.  Workaround the issue by
checking the FWSM register bit24 which is set by ME before it accesses the
MAC CSR registers.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

e1000e: workaround for packet drop on 82579 at 100Mbps

The MAC can drop short packets when the PHY detects noise on the line at
100Mbps due to a timing issue.  Workaround the issue by increasing the PLL
counter so the PHY properly recognizes the synchronization pattern from the
MAC.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

e1000e: Spurious interrupts & dropped packets with 82577/8/9 in half-duplex

On 82577/8/9 in half-duplex when a received packet is passed from the PHY
to the MAC, if too many preamble octects are stripped from the packet
before arriving at the MAC, it can be misintrepeted as an in-band message
rather than an actual frame.  For example, if the frame contents resembled
an interrupt request in-band message, it would trigger a false interrupt.
In most cases, the packet is just dropped.

By reducing the number of preamble octets stripped from the beginning of
the frame when passing it from the PHY to the MAC, the MAC will interpret
the frame properly.

An additional uses of the magic PHY_REG(770, 16) have been updated with a
define introduced with this patch.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

ixgbe: Fix FCOE memory leak for DDP packets

This patch is meant to fix a memory leak found via code review for FCOE.
Specifically on DDP flows the SKBs were being dropped without being
recycled, freed, or given to the stack.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

qeth: add support for af_iucv HiperSockets transport

This patch extends the HiperSockets device driver to send and receive
af_iucv traffic over HiperSockets transport.
TX: Driver uses new asynchronous delivery of storage blocks to pass
    flow control/congestion information from the HiperSockets microcode
    to the af_iucv socket.
RX: Memory for incoming traffic is preallocated and passed to
    HiperSockets layer. If receiver is not capable to clean its buffers
    shared with HiperSockets and pass new memory to the HiperSockets
    layer this will cause flow control/congestion events on the
    sender.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qeth: exploit asynchronous delivery of storage blocks

This patch exploits the QDIO support for asynchronous delivery of storage
blocks for Hipersockets. The exploitation is not configured per default and
may be enabled via the function qeth_configure_cq.

Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qeth: support forced signal adapter indications

This patch ensures that signal adapter commands are issued if they are
indicated to be required.

Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qdio: support forced signal adapter indications

This patch ensures that signal adapter commands are issued if they are
indicated to be required.

Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qdio: support asynchronous delivery of storage blocks

This patch introduces support for asynchronous delivery of storage blocks for
Hipersockets. Upper layers may exploit this functionality to reuse SBALs for
which the delivery status is still pending.

Signed-off-by: Einar Lueck <elelueck@de.ibm.com>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

af_iucv: add HiperSockets transport

The current transport mechanism for af_iucv is the z/VM offered
communications facility IUCV. To provide equivalent support when
running Linux in an LPAR, HiperSockets transport is added to the
AF_IUCV address family. It requires explicit binding of an AF_IUCV
socket to a HiperSockets device. A new packet_type ETH_P_AF_IUCV
is announced. An af_iucv specific transport header is defined
preceding the skb data. A small protocol is implemented for
connecting and for flow control/congestion management.

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

if_ether: add new Ethernet Protocol ID for af_iucv

Add a new ethertype for af_iucv over s/390 HiperSockets transport. Since
HiperSockets is not a real ethernet hw this is not an officially registered ID.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>