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692717 Commits

Author SHA1 Message Date
David S. Miller 5a4d148f0d Merge branch 'per-nexthop-offload'
Jiri Pirko says:

====================
ipv4: fib: Provide per-nexthop offload indication

Ido says:

Offload indication for IPv4 routes is currently set in the FIB info's
flags. When multipath routes are employed, this can lead to a route being
marked as offloaded although only one of its nexthops is actually
offloaded.

Instead, this patchset aims to proivde a higher resolution for the offload
indication and report it on a per-nexthop basis.

Example output from patched iproute:

$ ip route show 192.168.200.0/24
192.168.200.0/24
        nexthop via 192.168.100.2 dev enp3s0np7 weight 1 offload
        nexthop via 192.168.101.3 dev enp3s0np8 weight 1

And once the second gateway is resolved:

$ ip route show 192.168.200.0/24
192.168.200.0/24
        nexthop via 192.168.100.2 dev enp3s0np7 weight 1 offload
        nexthop via 192.168.101.3 dev enp3s0np8 weight 1 offload

First patch teaches the kernel to look for the offload indication in the
nexthop flags. Patches 2-5 adjust current capable drivers to provide
offload indication on a per-nexthop basis. Last patch removes no longer
used functions to set offload indication in the FIB info's flags.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:24 -07:00
Ido Schimmel 2202e35d47 ipv4: fib: Remove unused functions
Previous patches converted users of these functions to provide offload
indication using the nexthop's flags instead of the FIB info's.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:24 -07:00
Ido Schimmel 77d964e66c mlxsw: spectrum_router: Refresh offload indication upon group refresh
Now that we provide offload indication using the nexthop's flags we must
refresh the offload indication whenever the offload state within the
group changes.

This didn't matter until now, as offload indication was provided using
the FIB info flags and multipath routes were marked as offloaded as long
as one of the nexthops was offloaded.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:24 -07:00
Ido Schimmel 1353ee7073 mlxsw: spectrum_router: Don't check state when refreshing offload indication
Previous patch removed the reliance on the counter in the FIB info to
set the offload indication, so we no longer need to keep an offload
state on each FIB entry and can just set or unset the RTNH_F_OFFLOAD
flag in each nexthop.

This is also necessary because we're going to need to refresh the
offload indication whenever the nexthop group associated with the FIB
entry is refreshed. Current check would prevent us from marking a newly
resolved nexthop as offloaded if the FIB entry is already marked as
offloaded.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:23 -07:00
Ido Schimmel 3984d1a89f mlxsw: spectrum_router: Provide offload indication using nexthop flags
In a similar fashion to previous patch, use the nexthop flags to provide
offload indication instead of the FIB info's flags.

In case a nexthop in a multipath route can't be offloaded (gateway's MAC
can't be resolved, for example), then its offload flag isn't set.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:23 -07:00
Ido Schimmel 63e701c15c rocker: Provide offload indication using nexthop flags
We want to stop using the FIB info's flags to provide the offlaod
indication and instead do that on a per-nexthop basis.

Convert rocker to do just that. It only supports one nexthop per-route,
so conversion is simple.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:23 -07:00
Ido Schimmel 475abbf1ef ipv4: fib: Set offload indication according to nexthop flags
We're going to have capable drivers indicate route offload using the
nexthop flags, but for non-multipath routes these flags aren't dumped to
user space.

Instead, set the offload indication in the route message flags.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 17:00:23 -07:00
Ido Schimmel 9820355f69 mlxsw: core: Use correct EMAD transaction ID in debug message
'trans->tid' is only assigned later in the function, resulting in a zero
transaction ID. Use 'tid' instead.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:58:49 -07:00
David S. Miller f6775a28c4 Merge branch 'netvsc-transparent-VF-support'
Stephen Hemminger says:

====================
netvsc: transparent VF support

This patch set changes how SR-IOV Virtual Function devices are managed
in the Hyper-V network driver. This version is rebased onto current net-next.

Background

In Hyper-V SR-IOV can be enabled (and disabled) by changing guest settings
on host. When SR-IOV is enabled a matching PCI device is hot plugged and
visible on guest. The VF device is an add-on to an existing netvsc
device, and has the same MAC address.

How is this different?

The original support of VF relied on using bonding driver in active
standby mode to handle the VF device.

With the new netvsc VF logic, the Linux hyper-V network
virtual driver will directly manage the link to SR-IOV VF device.
When VF device is detected (hot plug) it is automatically made a
slave device of the netvsc device. The VF device state reflects
the state of the netvsc device; i.e. if netvsc is set down, then
VF is set down. If netvsc is set up, then VF is brought up.

Packet flow is independent of VF status; all packets are sent and
received as if they were associated with the netvsc device. If VF is
removed or link is down then the synthetic VMBUS path is used.

What was wrong with using bonding script?

A lot of work went into getting the bonding script to work on all
distributions, but it was a major struggle. Linux network devices
can be configured many, many ways and there is no one solution from
userspace to make it all work. What is really hard is when
configuration is attached to synthetic device during boot (eth0) and
then the same addresses and firewall rules needs to also work later if
doing bonding. The new code gets around all of this.

How does VF work during initialization?

Since all packets are sent and received through the logical netvsc
device, initialization is much easier. Just configure the regular
netvsc Ethernet device; when/if SR-IOV is enabled it just
works. Provisioning and cloud init only need to worry about setting up
netvsc device (eth0). If SR-IOV is enabled (even as a later step), the
address and rules stay the same.

What devices show up?

Both netvsc and PCI devices are visible in the system. The netvsc
device is active and named in usual manner (eth0). The PCI device is
visible to Linux and gets renamed by udev to a persistent name
(enP2p3s0). The PCI device name is now irrelevant now.

The logic also sets the PCI VF device SLAVE flag on the network
device so network tools can see the relationship if they are smart
enough to understand how layered devices work.

This is a lot like how I see Windows working.
The VF device is visible in Device Manager, but is not configured.

Is there any performance impact?
There is no visible change in performance. The bonding
and netvsc driver both have equivalent steps.

Is it compatible with old bonding script?

It turns out that if you use the old bonding script, then everything
still works but in a sub-optimum manner. What happens is that bonding
is unable to steal the VF from the netvsc device so it creates a one
legged bond.  Packet flow then is:
	bond0 <--> eth0 <- -> VF (enP2p3s0).
In other words, if you get it wrong it still works, just
awkward and slower.

What if I add address or firewall rule onto the VF?

Same problems occur with now as already occur with bonding, bridging,
teaming on Linux if user incorrectly does configuration onto
an underlying slave device. It will sort of work, packets will come in
and out but the Linux kernel gets confused and things like ARP don’t
work right.  There is no way to block manipulation of the slave
device, and I am sure someone will find some special use case where
they want it.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:55:34 -07:00
stephen hemminger 12aa7469d1 netvsc: remove bonding setup script
No longer needed, now all managed by transparent VF logic.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:55:33 -07:00
stephen hemminger a5050c6103 netvsc: add documentation
Add some background documentation on netvsc device options
and limitations.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:55:33 -07:00
stephen hemminger 0c195567a8 netvsc: transparent VF management
This patch implements transparent fail over from synthetic NIC to
SR-IOV virtual function NIC in Hyper-V environment. It is a better
alternative to using bonding as is done now. Instead, the receive and
transmit fail over is done internally inside the driver.

Using bonding driver has lots of issues because it depends on the
script being run early enough in the boot process and with sufficient
information to make the association. This patch moves all that
functionality into the kernel.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:55:33 -07:00
Amitoj Kaur Chawla 638ce0fc1e atm: solos-pci: constify attribute_group structures
Functions working with attribute_groups provided by <linux/sysfs.h>
work with const attribute_group. These attribute_group structures do not
change at runtime so mark them as const.

File size before:
 text      data     bss     dec     hex filename
 35740    28424     832   64996    fde4 drivers/atm/solos-pci.o

File size after:
 text      data     bss     dec     hex filename
 35932    28232     832   64996    fde4 drivers/atm/solos-pci.o

This change was made with the help of Coccinelle.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:53:24 -07:00
Amitoj Kaur Chawla 444826a99f atm: adummy: constify attribute_group structure
Functions working with attribute_groups provided by <linux/sysfs.h>
work with const attribute_group. These attribute_group structures do not
change at runtime so mark them as const.

File size before:
 text      data     bss     dec     hex filename
 2033      1448       0    3481     d99 drivers/atm/adummy.o

File size after:
 text      data     bss     dec     hex filename
 2129      1352       0    3481     d99 drivers/atm/adummy.o

This change was made with the help of Coccinelle.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:53:24 -07:00
Derek Chickles cf19a8c3d5 liquidio: set sriov_totalvfs correctly
The file /sys/devices/pci000.../sriov_totalvfs is showing a wrong value.
Fix it by calling pci_sriov_set_totalvfs() to set the total number of VFs
available after calculations for the number of PF and VF queues are made.

Signed-off-by: Derek Chickles <derek.chickles@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:50:14 -07:00
Florian Fainelli f613ed665b net: dsa: Add support for 64-bit statistics
DSA slave network devices maintain a pair of bytes and packets counters
for each directions, but these are not 64-bit capable. Re-use
pcpu_sw_netstats which contains exactly what we need for that purpose
and update the code path to report 64-bit capable statistics.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 16:49:09 -07:00
WANG Cong b2f9d432de flow_dissector: remove unused functions
They are introduced by commit f70ea018da
("net: Add functions to get skb->hash based on flow structures")
but never gets used in tree.

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 10:50:03 -07:00
Eric Dumazet 5357f0bd4e tcp: tcp_data_queue() cleanup
Commit c13ee2a4f0 ("tcp: reindent two spots after prequeue removal")
removed code in tcp_data_queue().

We can go a little farther, removing an always true test,
and removing initializers for fragstolen and eaten variables.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 10:45:24 -07:00
Arnd Bergmann aa6c16c43b net: bcmgenet: drop COMPILE_TEST dependency
The last patch added the dependency on 'OF && HAS_IOMEM' but left
COMPILE_TEST as an alternative, which kind of defeats the purpose
of adding the dependency, we still get randconfig build warnings:

warning: (NET_DSA_BCM_SF2 && BCMGENET) selects MDIO_BCM_UNIMAC which has unmet direct dependencies (NETDEVICES && MDIO_BUS && HAS_IOMEM && OF_MDIO)

For compile-testing purposes, we don't really need this anyway,
as CONFIG_OF can be enabled on all architectures, and HAS_IOMEM
is present on all architectures we do meaningful compile-testing on
(the exception being arch/um).

This makes both OF and HAS_IOMEM hard dependencies.

Fixes: 5af74bb4fc ("net: bcmgenet: Add dependency on HAS_IOMEM && OF")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 10:42:33 -07:00
Joe Perches 956a25c9f1 hyperv: netvsc: Neaten netvsc_send_pkt by using a temporary
Repeated dereference of nvmsg.msg.v1_msg.send_rndis_pkt can be
shortened by using a temporary.  Do so.

No change in object code.

Miscellanea:

o Use * const for rpkt and nvchan

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-02 10:36:00 -07:00
David S. Miller cb5b136c00 Merge branch 'dsa-rework-EEE-support'
Vivien Didelot says:

====================
net: dsa: rework EEE support

EEE implies configuring the port's PHY and MAC of both ends of the wire.

The current EEE support in DSA mixes PHY and MAC configuration, which is
bad because PHYs must be configured through a proper PHY driver. The DSA
switch operations for EEE are only meant for configuring the port's MAC,
which are integrated in the Ethernet switch device.

This patchset fixes the EEE support in qca8k driver, makes the DSA layer
call phy_init_eee for all drivers, and remove the EEE support from the
mv88e6xxx driver since the Marvell PHY driver should be enough for it.

Changes in v2:
 - make PHY device and DSA EEE ops mandatory for slave EEE operations.
 - simply return 0 in drivers which don't need to do anything to
   configure the port' MAC. Subsequent PHY calls will be enough.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot 08f500610f net: dsa: rename switch EEE ops
To avoid confusion with the PHY EEE settings, rename the .set_eee and
.get_eee ops to respectively .set_mac_eee and .get_mac_eee.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot 5480db6985 net: dsa: mv88e6xxx: remove EEE support
The PHY's EEE settings are already accessed by the DSA layer through the
Marvell PHY driver and there is nothing to be done for switch's MACs.

Remove all EEE support from the mv88e6xxx driver and simply return 0
from the EEE ops.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot 46587e4a31 net: dsa: remove PHY device argument from .set_eee
The DSA switch operations for EEE are only meant to configure a port's
MAC EEE settings. The port's PHY EEE settings are accessed by the DSA
layer and must be made available via a proper PHY driver.

In order to reduce this confusion, remove the phy_device argument from
the .set_eee operation.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot c48f7eb302 net: dsa: call phy_init_eee in DSA layer
All DSA drivers are calling phy_init_eee if eee_enabled is true.

Move up this statement in the DSA layer to simplify the DSA drivers.
qca8k does not require to cache the ethtool_eee structures from now on.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot 7f5c6d7cdd net: dsa: mv88e6xxx: call phy_init_eee
It is safer to init the EEE before the DSA layer call
phy_ethtool_set_eee, as sf2 and qca8k are doing.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot b11af0ce11 net: dsa: bcm_sf2: remove unneeded supported flags
The SF2 driver is masking the supported bitfield of its private copy of
the ports' ethtool_eee structures. It is used nowhere, thus remove it.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:10 -07:00
Vivien Didelot 193da90e60 net: dsa: qca8k: empty qca8k_get_eee
phy_ethtool_get_eee is already called by the DSA layer, thus remove the
duplicated call in the qca8k driver.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:09 -07:00
Vivien Didelot a2444ab83e net: dsa: qca8k: do not cache unneeded EEE fields
The qca8k driver is currently caching a bitfield of the supported member
of a ethtool_eee private structure, which is unused.

Only the eee_enabled field of the private ethtool_eee copy is updated,
thus using p->advertised and p->lp_advertised is also erroneous.

Remove the usage of these private ethtool_eee members and only rely on
phy_ethtool_get_eee to assign the eee_active member.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:09 -07:00
Vivien Didelot dca2098931 net: dsa: qca8k: enable EEE once
If EEE is queried enabled, qca8k_set_eee calls qca8k_eee_enable_set
twice (because it is already called in qca8k_eee_init). Fix that.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:09 -07:00
Vivien Didelot 06d7b5c3ac net: dsa: qca8k: fix EEE init
The qca8k obviously copied code from the sf2 driver as how to set EEE:

    if (e->eee_enabled) {
        p->eee_enabled = qca8k_eee_init(ds, port, phydev);
        if (!p->eee_enabled)
            ret = -EOPNOTSUPP;
    }

But it did not use the same logic for the EEE init routine, which is
"Returns 0 if EEE was not enabled, or 1 otherwise". This results in
returning -EOPNOTSUPP on success and caching EEE enabled on failure.

This patch fixes the returned value of qca8k_eee_init.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:09 -07:00
Vivien Didelot 7b9cc73843 net: dsa: PHY device is mandatory for EEE
The port's PHY and MAC are both implied in EEE. The current code does
not call the PHY operations if the related device is NULL. Change that
by returning -ENODEV if there's no PHY device attached to the interface.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 20:09:09 -07:00
David S. Miller 13e6be2d22 Merge branch 'ravb-wol-magic-packet'
Niklas Söderlund says:

====================
ravb: add wake-on-lan support via magic packet

WoL is enabled in the suspend callback by setting MagicPacket detection
and disabling all interrupts expect MagicPacket. In the resume path the
driver needs to reset the hardware to rearm the WoL logic, this prevents
the driver from simply restoring the registers and to take advantage of
that ravb was not suspended to reduce resume time. To reset the
hardware the driver closes the device, sets it in reset mode and reopens
the device just like it would do in a normal suspend/resume scenario
without WoL enabled, but it both closes and opens the device in the
resume callback since the device needs to be reset for WoL to work.

One quirk needed for WoL is that the module clock needs to be prevented
from being switched off by Runtime PM. To keep the clock alive the
suspend callback need to call clk_enable() directly to increase the
usage count of the clock. Then when Runtime PM decreases the clock usage
count it won't reach 0 and be switched off.

Changes since v2
- Only do the clock dance to workaround PSCI sleep when resuming if WoL
  is enabled. This was a bug in v2 which resulted in a WARN if resuming
  from PSCI sleep with WoL disabled, thanks Sergei for pointing this
  out!
- Break out clock dance workaround in separate patch to make it easier
  to revert once a fix is upstream for the clock driver as suggested by
  Sergei.

Changes since v1
- Fix issue where device would fail to resume from PSCI suspend if WoL
  was enabled, reported by Geert. The fault was that the clock driver
  thinks the clock is on, but PSCI have disabled it, added workaround
  for this in ravb driver which can be removed once the clock driver is
  aware of the PSCI behavior.
- Only try to restore from wol wake up if netif is running, since this
  is a condition to enable wol in the first place this was a bug in v1.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 17:54:39 -07:00
Niklas Söderlund fbf3d034f2 ravb: add workaround for clock when resuming with WoL enabled
The renesas-cpg-mssr clock driver are not yet aware of PSCI sleep where
power is cut to the SoC. When resuming from this state with WoL enabled
the enable count of the ravb clock is 1 and the clock driver thinks the
clock is already on when PM core enables the clock and increments the
enable count to 2. This will result in the ravb driver failing to talk
to the hardware since the module clock is off. Work around this by
forcing the enable count to 0 and then back to 2 when resuming with WoL
enabled.

This workaround should be reverted once the renesas-cpg-mssr clock
driver becomes aware of this PSCI sleep behavior.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 17:54:38 -07:00
Niklas Söderlund 3e3d647715 ravb: add wake-on-lan support via magic packet
WoL is enabled in the suspend callback by setting MagicPacket detection
and disabling all interrupts expect MagicPacket. In the resume path the
driver needs to reset the hardware to rearm the WoL logic, this prevents
the driver from simply restoring the registers and to take advantage of
that ravb was not suspended to reduce resume time. To reset the
hardware the driver closes the device, sets it in reset mode and reopens
the device just like it would do in a normal suspend/resume scenario
without WoL enabled, but it both closes and opens the device in the
resume callback since the device needs to be reset for WoL to work.

One quirk needed for WoL is that the module clock needs to be prevented
from being switched off by Runtime PM. To keep the clock alive the
suspend callback need to call clk_enable() directly to increase the
usage count of the clock. Then when Runtime PM decreases the clock usage
count it won't reach 0 and be switched off.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 17:54:38 -07:00
David S. Miller 906a039d2f Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:

====================
pull request: bluetooth-next 2017-08-01

Here's our first batch of Bluetooth patches for the 4.14 kernel:

 - Several new USB IDs for the btusb driver
 - Memory leak fix in btusb driver
 - Cleanups & fixes to hci_nokia, hci_serdev and hci_bcm drivers
 - Fixed cleanup path in mrf24j40 (802.15.4) driver probe function
 - A few other smaller cleanups & fixes to drivers

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 17:42:58 -07:00
Willem de Bruijn c613c209c3 net: add skb_frag_foreach_page and use with kmap_atomic
Skb frags may contain compound pages. Various operations map frags
temporarily using kmap_atomic, but this function works on single
pages, not whole compound pages. The distinction is only relevant
for high mem pages that require temporary mappings.

Introduce a looping mechanism that for compound highmem pages maps
one page at a time, does not change behavior on other pages.
Use the loop in the kmap_atomic callers in net/core/skbuff.c.

Verified by triggering skb_copy_bits with

    tcpdump -n -c 100 -i ${DEV} -w /dev/null &
    netperf -t TCP_STREAM -H ${HOST}

  and by triggering __skb_checksum with

    ethtool -K ${DEV} tx off

  repeated the tests with looping on a non-highmem platform
  (x86_64) by making skb_frag_must_loop always return true.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 16:07:10 -07:00
David S. Miller 1ae39d658d Merge branch 'mediatek-next'
Sean Wang says:

====================
net-next: mediatek: add support for ethernet on MT7622 SoC

Changes since v2:
- update John's mail

Changes since v1:
- add refinement for ethernet clock management
- take out the code block for ESW, add it until ESW driver is actually introduced

The series adds the driver for ethernet controller found on MT7622 SoC.
There are additions against with previous MT7623 SoC such as shared SGMII
given for the dual GMACs and built-in 5-ports 10/100 embedded switch support
(ESW). Thus more clocks consumers and SGMII hardware setup for the extra
features are all introduced here and as for the support for ESW that would be
planned to add in the separate patch integrating with DSA infrastructure
in the future.

Currently testing successfully is done with those patches for the conditions
such as GMAC2 with IP1001 PHY via RGMII and GMAC1/2 with RTL8211F PHY via SGMII.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:51:49 -07:00
Sean Wang 0857d6f865 MAINTAINERS: add Sean/Nelson as MediaTek ethernet maintainers
Sean and Nelson work for MediaTek on maintaining the MediaTek ethernet
driver for the existing SoCs and adding support for the following SoCs.
In the past, Sean has been active at making most of the qualifications
, stress test and submitting a lot of patches for the driver while
Nelson was looking into the aspects more on hardware additions and details
such as introducing PDMA with Hardware LRO to the driver. Also update
John's up-to-date mail address in the patch.

Cc: John Crispin <john@phrozen.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Nelson Chang <nelson.chang@mediatek.com>
Acked-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:51:48 -07:00
Sean Wang 42c03844e9 net-next: mediatek: add support for MediaTek MT7622 SoC
This patch adds the driver for ethernet controller on MT7622 SoC. It has
the similar handling logic as the previously MT7623 does, but there are
additions against with MT7623 SoC, the shared SGMII given for the dual
GMACs and including 5-ports 10/100 embedded switch support (ESW) as the
GMAC1 option, thus more clocks consumers for the extra feature are
introduced here. So for ease portability and maintenance, those
differences all are being kept inside the platform data as other drivers
usually do. Currently testing successfully is done with those patches for
the conditions such as GMAC2 with IP1001 PHY via RGMII and GMAC1/2 with
RTL8211F PHY via SGMII.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:51:48 -07:00
Sean Wang 2ec50f574e net-next: mediatek: add platform data to adapt into various hardware
This patch is the preparation patch in order to adapt into various
hardware through adding platform data which holds specific characteristics
among MediaTek SoCs and introducing the unified clock handler for those
distinct clock requirements depending on different features such as
TRGMII and SGMII getting support on the target SoC. And finally, add
enhancement with given the generic description for Kconfig and remove the
unnecessary machine type dependency in Makefile.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:51:48 -07:00
Sean Wang da779b4011 dt-bindings: net: mediatek: add support for MediaTek MT7623 and MT7622 SoC
The patch adds the supplements in the dt-binding document for MediaTek
MT7622 SoC with extra SGMII system controller and relevant clock consumers
listed as the requirements for those SoCs equipped with the SGMII circuit.
Also, add the missing binding information for MT7623 SoC here which relies
on the fallback binding of MT2701.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:51:48 -07:00
David S. Miller 2e674381be Merge branch 'kzproxy-next'
Tom Herbert says:

====================
net: Infrastructure changes for [kz]proxy

This patch set contains some general infrastructure enhancements that
will be used by kernel proxy and zero proxy.

The changes are:
  - proto_ops: Add locked versions of sendmsg and sendpage
  - skb_send_sock: Allow sending and skb on a socket within the
    kernel
  - Generalize strparser. Allow it to be used in other contexts than
    just in the read_sock path. This will be used in the transmit
    path of zero proxy.

Some nice future work (which I've been discussing with John Fastabend)
will be to make some of the related functions to allow gifting of skbs
We should be able to do that with skb_send_sock and strp_process. I'd
also like this feature in the read_sock callbeck.

Tested: Ran modified kernel without incident. Tested new functionality
using zero proxy (in development).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:26:19 -07:00
Tom Herbert bbb03029a8 strparser: Generalize strparser
Generalize strparser from more than just being used in conjunction
with read_sock. strparser will also be used in the send path with
zero proxy. The primary change is to create strp_process function
that performs the critical processing on skbs. The documentation
is also updated to reflect the new uses.

Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:26:19 -07:00
Tom Herbert 20bf50de30 skbuff: Function to send an skbuf on a socket
Add skb_send_sock to send an skbuff on a socket within the kernel.
Arguments include an offset so that an skbuf might be sent in mulitple
calls (e.g. send buffer limit is hit).

Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:26:18 -07:00
Tom Herbert 306b13eb3c proto_ops: Add locked held versions of sendmsg and sendpage
Add new proto_ops sendmsg_locked and sendpage_locked that can be
called when the socket lock is already held. Correspondingly, add
kernel_sendmsg_locked and kernel_sendpage_locked as front end
functions.

These functions will be used in zero proxy so that we can take
the socket lock in a ULP sendmsg/sendpage and then directly call the
backend transport proto_ops functions.

Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 15:26:18 -07:00
David S. Miller 29fda25a2d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two minor conflicts in virtio_net driver (bug fix overlapping addition
of a helper) and MAINTAINERS (new driver edit overlapping revamp of
PHY entry).

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 10:07:50 -07:00
David S. Miller bb1182bc3e Merge branch 'revert-ipv6-const'
Julia Lawall says:

====================
Revert "ipv6: constify inet6_protocol structures"

inet6_add_protocol and inet6_del_protocol include casts that remove the
effect of the const annotation on their parameter, leading to possible
runtime crashes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 10:03:17 -07:00
Julia Lawall e6eeb287e3 Revert "l2tp: constify inet6_protocol structures"
This reverts commit d04916a48a.

inet6_add_protocol and inet6_del_protocol include casts that remove the
effect of the const annotation on their parameter, leading to possible
runtime crashes.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 10:03:17 -07:00
Julia Lawall 39294c3df2 Revert "ipv6: constify inet6_protocol structures"
This reverts commit 3a3a4e3054.

inet6_add_protocol and inet6_del_protocol include casts that remove the
effect of the const annotation on their parameter, leading to possible
runtime crashes.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-01 10:03:17 -07:00