Julia Lawall [Wed, 2 Aug 2017 09:35:00 +0000 (11:35 +0200)]
X25: constify null_x25_address
null_x25_address is only used to access the string it contains, so it can
be const.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 3 Aug 2017 00:00:24 +0000 (17:00 -0700)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:06 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:05 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:04 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:03 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:02 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:56:01 +0000 (09:56 +0200)]
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>
Ido Schimmel [Wed, 2 Aug 2017 07:52:10 +0000 (09:52 +0200)]
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>
David S. Miller [Wed, 2 Aug 2017 23:55:34 +0000 (16:55 -0700)]
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>
stephen hemminger [Wed, 2 Aug 2017 02:58:55 +0000 (19:58 -0700)]
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>
stephen hemminger [Wed, 2 Aug 2017 02:58:54 +0000 (19:58 -0700)]
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>
stephen hemminger [Wed, 2 Aug 2017 02:58:53 +0000 (19:58 -0700)]
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>
Amitoj Kaur Chawla [Tue, 1 Aug 2017 23:57:47 +0000 (19:57 -0400)]
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>
Amitoj Kaur Chawla [Tue, 1 Aug 2017 23:57:38 +0000 (19:57 -0400)]
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>
Derek Chickles [Tue, 1 Aug 2017 22:05:07 +0000 (15:05 -0700)]
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>
Florian Fainelli [Tue, 1 Aug 2017 22:00:36 +0000 (15:00 -0700)]
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>
WANG Cong [Tue, 1 Aug 2017 20:18:09 +0000 (13:18 -0700)]
flow_dissector: remove unused functions
They are introduced by commit
f70ea018da06
("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>
Eric Dumazet [Tue, 1 Aug 2017 14:02:44 +0000 (07:02 -0700)]
tcp: tcp_data_queue() cleanup
Commit
c13ee2a4f03f ("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>
Arnd Bergmann [Tue, 1 Aug 2017 11:50:56 +0000 (13:50 +0200)]
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:
5af74bb4fcf8 ("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>
Joe Perches [Mon, 31 Jul 2017 17:30:54 +0000 (10:30 -0700)]
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>
David S. Miller [Wed, 2 Aug 2017 03:09:10 +0000 (20:09 -0700)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:41 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:40 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:39 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:38 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:37 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:36 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:35 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:34 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:33 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:32 +0000 (16:32 -0400)]
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>
Vivien Didelot [Tue, 1 Aug 2017 20:32:31 +0000 (16:32 -0400)]
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>
David S. Miller [Wed, 2 Aug 2017 00:54:39 +0000 (17:54 -0700)]
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>
Niklas Söderlund [Tue, 1 Aug 2017 10:14:37 +0000 (12:14 +0200)]
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>
Niklas Söderlund [Tue, 1 Aug 2017 10:14:36 +0000 (12:14 +0200)]
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>
David S. Miller [Wed, 2 Aug 2017 00:42:58 +0000 (17:42 -0700)]
Merge branch 'for-upstream' of git://git./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>
Willem de Bruijn [Mon, 31 Jul 2017 12:15:47 +0000 (08:15 -0400)]
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>
David S. Miller [Tue, 1 Aug 2017 22:51:49 +0000 (15:51 -0700)]
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>
Sean Wang [Mon, 31 Jul 2017 10:05:11 +0000 (18:05 +0800)]
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>
Sean Wang [Mon, 31 Jul 2017 10:05:10 +0000 (18:05 +0800)]
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>
Sean Wang [Mon, 31 Jul 2017 10:05:09 +0000 (18:05 +0800)]
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>
Sean Wang [Mon, 31 Jul 2017 10:05:08 +0000 (18:05 +0800)]
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>
David S. Miller [Tue, 1 Aug 2017 22:26:19 +0000 (15:26 -0700)]
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>
Tom Herbert [Fri, 28 Jul 2017 23:22:43 +0000 (16:22 -0700)]
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>
Tom Herbert [Fri, 28 Jul 2017 23:22:42 +0000 (16:22 -0700)]
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>
Tom Herbert [Fri, 28 Jul 2017 23:22:41 +0000 (16:22 -0700)]
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>
David S. Miller [Tue, 1 Aug 2017 17:07:50 +0000 (10:07 -0700)]
Merge git://git./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>
David S. Miller [Tue, 1 Aug 2017 17:03:17 +0000 (10:03 -0700)]
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>
Julia Lawall [Tue, 1 Aug 2017 16:27:29 +0000 (18:27 +0200)]
Revert "l2tp: constify inet6_protocol structures"
This reverts commit
d04916a48ad4a3db892b664fa9c3a2a693c378ad.
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>
Julia Lawall [Tue, 1 Aug 2017 16:27:28 +0000 (18:27 +0200)]
Revert "ipv6: constify inet6_protocol structures"
This reverts commit
3a3a4e3054137c5ff5d4d306ec834f6d25d7f95b.
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>
Linus Torvalds [Tue, 1 Aug 2017 05:36:42 +0000 (22:36 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Handle notifier registry failures properly in tun/tap driver, from
Tonghao Zhang.
2) Fix bpf verifier handling of subtraction bounds and add a testcase
for this, from Edward Cree.
3) Increase reset timeout in ftgmac100 driver, from Ben Herrenschmidt.
4) Fix use after free in prd_retire_rx_blk_timer_exired() in AF_PACKET,
from Cong Wang.
5) Fix SElinux regression due to recent UDP optimizations, from Paolo
Abeni.
6) We accidently increment IPSTATS_MIB_FRAGFAILS in the ipv6 code
paths, fix from Stefano Brivio.
7) Fix some mem leaks in dccp, from Xin Long.
8) Adjust MDIO_BUS kconfig deps to avoid build errors, from Arnd
Bergmann.
9) Mac address length check and buffer size fixes from Cong Wang.
10) Don't leak sockets in ipv6 udp early demux, from Paolo Abeni.
11) Fix return value when copy_from_user() fails in
bpf_prog_get_info_by_fd(), from Daniel Borkmann.
12) Handle PHY_HALTED properly in phy library state machine, from
Florian Fainelli.
13) Fix OOPS in fib_sync_down_dev(), from Ido Schimmel.
14) Fix truesize calculation in virtio_net which led to performance
regressions, from Michael S Tsirkin.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (76 commits)
samples/bpf: fix bpf tunnel cleanup
udp6: fix jumbogram reception
ppp: Fix a scheduling-while-atomic bug in del_chan
Revert "net: bcmgenet: Remove init parameter from bcmgenet_mii_config"
virtio_net: fix truesize for mergeable buffers
mv643xx_eth: fix of_irq_to_resource() error check
MAINTAINERS: Add more files to the PHY LIBRARY section
ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev()
net: phy: Correctly process PHY_HALTED in phy_stop_machine()
sunhme: fix up GREG_STAT and GREG_IMASK register offsets
bpf: fix bpf_prog_get_info_by_fd to dump correct xlated_prog_len
tcp: avoid bogus gcc-7 array-bounds warning
net: tc35815: fix spelling mistake: "Intterrupt" -> "Interrupt"
bpf: don't indicate success when copy_from_user fails
udp6: fix socket leak on early demux
net: thunderx: Fix BGX transmit stall due to underflow
Revert "vhost: cache used event for better performance"
team: use a larger struct for mac address
net: check dev->addr_len for dev_set_mac_address()
phy: bcm-ns-usb3: fix MDIO_BUS dependency
...
Brian Norris [Tue, 1 Aug 2017 00:59:39 +0000 (17:59 -0700)]
Bluetooth: btusb: add ID for LiteOn 04ca:3016
Contains a QCA6174A-5 chipset, with USB BT. Let's support loading
firmware on it.
From usb-devices:
T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 2.01 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=04ca ProdID=3016 Rev=00.01
C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
William Tu [Mon, 31 Jul 2017 21:40:50 +0000 (14:40 -0700)]
samples/bpf: fix bpf tunnel cleanup
test_tunnel_bpf.sh fails to remove the vxlan11 tunnel device, causing the
next geneve tunnelling test case fails. In addition, the geneve reserved bit
in tcbpf2_kern.c should be zero, according to the RFC.
Signed-off-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Mon, 31 Jul 2017 14:52:36 +0000 (16:52 +0200)]
udp6: fix jumbogram reception
Since commit
67a51780aebb ("ipv6: udp: leverage scratch area
helpers") udp6_recvmsg() read the skb len from the scratch area,
to avoid a cache miss.
But the UDP6 rx path support RFC 2675 UDPv6 jumbograms, and their
length exceeds the 16 bits available in the scratch area. As a side
effect the length returned by recvmsg() is:
<ingress datagram len> % (1<<16)
This commit addresses the issue allocating one more bit in the
IP6CB flags field and setting it for incoming jumbograms.
Such field is still in the first cacheline, so at recvmsg()
time we can check it and fallback to access skb->len if
required, without a measurable overhead.
Fixes:
67a51780aebb ("ipv6: udp: leverage scratch area helpers")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gao Feng [Mon, 31 Jul 2017 10:07:38 +0000 (18:07 +0800)]
ppp: Fix a scheduling-while-atomic bug in del_chan
The PPTP set the pptp_sock_destruct as the sock's sk_destruct, it would
trigger this bug when __sk_free is invoked in atomic context, because of
the call path pptp_sock_destruct->del_chan->synchronize_rcu.
Now move the synchronize_rcu to pptp_release from del_chan. This is the
only one case which would free the sock and need the synchronize_rcu.
The following is the panic I met with kernel 3.3.8, but this issue should
exist in current kernel too according to the codes.
BUG: scheduling while atomic
__schedule_bug+0x5e/0x64
__schedule+0x55/0x580
? ppp_unregister_channel+0x1cd5/0x1de0 [ppp_generic]
? dev_hard_start_xmit+0x423/0x530
? sch_direct_xmit+0x73/0x170
__cond_resched+0x16/0x30
_cond_resched+0x22/0x30
wait_for_common+0x18/0x110
? call_rcu_bh+0x10/0x10
wait_for_completion+0x12/0x20
wait_rcu_gp+0x34/0x40
? wait_rcu_gp+0x40/0x40
synchronize_sched+0x1e/0x20
0xf8417298
0xf8417484
? sock_queue_rcv_skb+0x109/0x130
__sk_free+0x16/0x110
? udp_queue_rcv_skb+0x1f2/0x290
sk_free+0x16/0x20
__udp4_lib_rcv+0x3b8/0x650
Signed-off-by: Gao Feng <gfree.wind@vip.163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 18:05:32 +0000 (11:05 -0700)]
Revert "net: bcmgenet: Remove init parameter from bcmgenet_mii_config"
This reverts commit
28b45910ccda ("net: bcmgenet: Remove init parameter
from bcmgenet_mii_config") because in the process of moving from
dev_info() to dev_info_once() we essentially lost the helpful printed
messages once the second instance of the driver is loaded.
dev_info_once() does not actually print the message once per device
instance, but once period.
Fixes:
28b45910ccda ("net: bcmgenet: Remove init parameter from bcmgenet_mii_config")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Doug Berger <opendmb@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael S. Tsirkin [Mon, 31 Jul 2017 18:49:49 +0000 (21:49 +0300)]
virtio_net: fix truesize for mergeable buffers
Seth Forshee noticed a performance degradation with some workloads.
This turns out to be due to packet drops. Euan Kemp noticed that this
is because we drop all packets where length exceeds the truesize, but
for some packets we add in extra memory without updating the truesize.
This in turn was kept around unchanged from
ab7db91705e95 ("virtio-net:
auto-tune mergeable rx buffer size for improved performance"). That
commit had an internal reason not to account for the extra space: not
enough bits to do it. No longer true so let's account for the allocated
length exactly.
Many thanks to Seth Forshee for the report and bisecting and Euan Kemp
for debugging the issue.
Fixes:
680557cf79f8 ("virtio_net: rework mergeable buffer handling")
Reported-by: Euan Kemp <euan.kemp@coreos.com>
Tested-by: Euan Kemp <euan.kemp@coreos.com>
Reported-by: Seth Forshee <seth.forshee@canonical.com>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Sitnicki [Mon, 31 Jul 2017 08:09:41 +0000 (10:09 +0200)]
ipv6: Avoid going through ->sk_net to access the netns
There is no need to go through sk->sk_net to access the net namespace
and its sysctl variables because we allocate the sock and initialize
sk_net just a few lines earlier in the same routine.
Signed-off-by: Jakub Sitnicki <jkbs@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 1 Aug 2017 01:00:24 +0000 (18:00 -0700)]
Merge branch 'marvell-phy-refactor-and-cleanup'
Andrew Lunn says:
====================
More Marvell PHY refactoring and cleanup
Consolidate more duplicated code into helpers, make use of core
helpers, move code into a helper for later adding functionality to add
marvell PHYs, etc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:50 +0000 (22:41 +0200)]
net: phy: marvell: Refactor setting downshift into a helper
The 1116r has code to set downshift. Refactor this into a helper, so
in future other marvell PHYs can use it.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:49 +0000 (22:41 +0200)]
net: phy: marvell: Use the set_polarity helper
Some of the init functions unilaterally enable set auto cross over
without using the helper. Make use of the helper, and respect the
phydev MDI configuration.
Clean up the #define used while setting polarity, and the other
functions of the bits in the register.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:48 +0000 (22:41 +0200)]
net: phy: marvell: Refactor m88e1121 RGMII delay configuration
Turns out that MII_M1116R_CONTROL_REG_MAC is the same as
MII_88E1121_PHY_MSCR_REG. Refactor the code to set the RGMII delays
into a shared helper.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:47 +0000 (22:41 +0200)]
net: phy: marvell: Consolidate setting the phy-mode
The same code is repeated a few times. Refactor into a helped.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:46 +0000 (22:41 +0200)]
net: phy: marvell: consolidate RGMII delay code
The same code is repeated for different PHY versions. Put it into a
help and call when needed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:45 +0000 (22:41 +0200)]
net: phy: marvell: Use core genphy_soft_reset()
Rather than using an open coded equivalent, use the core
genphy_soft_reset() function.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Sun, 30 Jul 2017 20:41:44 +0000 (22:41 +0200)]
net: phy: marvell: tabification
Convert spaces to tabs where appropriate, and fix up some otherwise
odd indentation.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sergei Shtylyov [Sat, 29 Jul 2017 19:18:41 +0000 (22:18 +0300)]
mv643xx_eth: fix of_irq_to_resource() error check
of_irq_to_resource() has recently been fixed to return negative error #'s
along with 0 in case of failure, however the Marvell MV643xx Ethernet
driver still only regards 0 as invalid IRQ -- fix it up.
Fixes:
7a4228bbff76 ("of: irq: use of_irq_get() in of_irq_to_resource()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Tue, 1 Aug 2017 00:53:07 +0000 (17:53 -0700)]
net: bcmgenet: Add dependency on HAS_IOMEM && OF
The driver needs CONFIG_HAS_IOMEM and OF to be functional, but we still
let it build with COMPILE_TEST. This fixes the unmet dependency after
selecting MDIO_BCM_UNIMAC in commit mentioned below:
warning: (NET_DSA_BCM_SF2 && BCMGENET) selects MDIO_BCM_UNIMAC which has
unmet direct dependencies (NETDEVICES && MDIO_DEVICE && HAS_IOMEM &&
OF_MDIO)
Fixes:
9a4e79697009 ("net: bcmgenet: utilize generic Broadcom UniMAC MDIO controller driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 16:47:50 +0000 (09:47 -0700)]
MAINTAINERS: Add more files to the PHY LIBRARY section
Include missing files that are provided by, used, or directly maintained
within the PHY LIBRARY, this include uapi header, header files used by
Device Tree code etc.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Fri, 28 Jul 2017 20:27:44 +0000 (23:27 +0300)]
ipv4: fib: Fix NULL pointer deref during fib_sync_down_dev()
Michał reported a NULL pointer deref during fib_sync_down_dev() when
unregistering a netdevice. The problem is that we don't check for
'in_dev' being NULL, which can happen in very specific cases.
Usually routes are flushed upon NETDEV_DOWN sent in either the netdev or
the inetaddr notification chains. However, if an interface isn't
configured with any IP address, then it's possible for host routes to be
flushed following NETDEV_UNREGISTER, after NULLing dev->ip_ptr in
inetdev_destroy().
To reproduce:
$ ip link add type dummy
$ ip route add local 1.1.1.0/24 dev dummy0
$ ip link del dev dummy0
Fix this by checking for the presence of 'in_dev' before referencing it.
Fixes:
982acb97560c ("ipv4: fib: Notify about nexthop status changes")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Tested-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Fri, 28 Jul 2017 18:58:36 +0000 (11:58 -0700)]
net: phy: Correctly process PHY_HALTED in phy_stop_machine()
Marc reported that he was not getting the PHY library adjust_link()
callback function to run when calling phy_stop() + phy_disconnect()
which does not indeed happen because we set the state machine to
PHY_HALTED but we don't get to run it to process this state past that
point.
Fix this with a synchronous call to phy_state_machine() in order to have
the state machine actually act on PHY_HALTED, set the PHY device's link
down, turn the network device's carrier off and finally call the
adjust_link() function.
Reported-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Fixes:
a390d1f379cf ("phylib: convert state_queue work to delayed_work")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Wang [Fri, 28 Jul 2017 17:28:21 +0000 (10:28 -0700)]
tcp: add related fields into SCM_TIMESTAMPING_OPT_STATS
Add the following stats into SCM_TIMESTAMPING_OPT_STATS control msg:
TCP_NLA_PACING_RATE
TCP_NLA_DELIVERY_RATE
TCP_NLA_SND_CWND
TCP_NLA_REORDERING
TCP_NLA_MIN_RTT
TCP_NLA_RECUR_RETRANS
TCP_NLA_DELIVERY_RATE_APP_LMT
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Wang [Fri, 28 Jul 2017 17:28:20 +0000 (10:28 -0700)]
tcp: extract the function to compute delivery rate
Refactor the code to extract the function to compute delivery rate.
This function will be used in later commit.
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Cave-Ayland [Thu, 27 Jul 2017 16:26:00 +0000 (17:26 +0100)]
sunhme: fix up GREG_STAT and GREG_IMASK register offsets
Update the values to match those from the STP2002QFP documentation.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marc Gonzalez [Fri, 28 Jul 2017 11:18:30 +0000 (13:18 +0200)]
net: phy: Log only PHY state transitions
In the current code, old and new PHY states are always logged.
>From now on, log only PHY state transitions.
Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 31 Jul 2017 21:44:34 +0000 (14:44 -0700)]
Merge branch 'mlxsw-Various-small-fixes'
Jiri Pirko says:
====================
mlxsw: Various small fixes
This patch series is to contribute several fixes for nits that I noticed while
working on mlxsw. The changes range from typo fixes to local improvements of
the code and have little in common besides being small in scope.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:30 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Simplify a piece of code
Express the same logic more succinctly.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:29 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Clarify a piece of code
Prefer logical operator that expresses the intent to bitwise one that
happens to give the same result.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:28 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Simplify a piece of code
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:27 +0000 (09:27 +0200)]
mlxsw: reg.h: Namespace IP2ME registers
This renames IP2ME-specific registers reg_ralue_v and
reg_ralue_tunnel_ptr to reg_ralue_ip2me_*.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:26 +0000 (09:27 +0200)]
mlxsw: Update specification of reg_ritr_type
The comments really belong to the individual enumerators. The comment
at the register should instead reference the enum.
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:25 +0000 (09:27 +0200)]
mlxsw: spectrum_router: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:24 +0000 (09:27 +0200)]
mlxsw: reg.h: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Mon, 31 Jul 2017 07:27:23 +0000 (09:27 +0200)]
mlxsw: spectrum_acl: Fix a typo
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 31 Jul 2017 21:40:59 +0000 (14:40 -0700)]
Merge branch 'bcmgenet-utilize-MDIO-unimac-driver'
Florian Fainelli says:
====================
net: bcmgenet: utilize MDIO unimac driver
This patch series migrates the Broadcom GENET driver to use the mdio-bcm-unimac
driver. This MDIO HW is the same as the one GENET internally embedds, yet for
historical reasons the two drivers lived their own lives. Because of the GENET
interrupt situation, we let it specify how it wants to signal MDIO operations
completion using its driver-private waitqueue.
The diffstat is not super impressive, but it's still negative! This would
make it easier in the future to absorb possible workarounds/bugs/features
within the same location.
This was tested on BCM7260 (GENETv5, single instance), BCM7439 (GENETv4, triple
instance) and BCM7445 (bcm_sf2 + mdio-bcm-unimac).
We also now have a nice /proc/iomem output:
f0b00000-
f0b0fc4b : /rdb/ethernet@
f0b00000
f0b00e14-
f0b00e1c : unimac-mdio.0
f0b20000-
f0b2fc4b : /rdb/ethernet@
f0b20000
f0b20e14-
f0b20e1c : unimac-mdio.1
f0b40000-
f0b4fc4b : /rdb/ethernet@
f0b40000
f0b40e14-
f0b40e1c : unimac-mdio.2
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:28 +0000 (12:04 -0700)]
net: bcmgenet: Utilize bcmgenet_mii_exit() for error path
bcmgenet_mii_init() has an error path which is strictly identical to the
unwinding that bcmgenet_mii_exit() does, so have bcmgenet_mii_init()
utilize bcmgenet_mii_exit() for that.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:27 +0000 (12:04 -0700)]
net: bcmgenet: Drop legacy MDIO code
Now that we have fully migrated to the mdio-bcm-unimac driver, drop the
legacy MDIO bus code which did duplicate a fair amount of code.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:26 +0000 (12:04 -0700)]
net: bcmgenet: utilize generic Broadcom UniMAC MDIO controller driver
Update the GENET driver to register an UniMAC MDIO bus controller for
the GENET internal MDIO bus, update the platform data code to attach the
PHY to the correct MDIO bus controller.
The Device Tree portion of the code is mostly left unmodified since the
lookup/binding is done via phandles and Device Tree nodes which are much
more flexible in locating and binding PHYs to their respective MDIO bus
controllers.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:25 +0000 (12:04 -0700)]
net: phy: mdio-bcm-unimac: Allow specifying platform data
In preparation for having the bcmgenet driver migrate over the
mdio-bcm-unimac driver, add a platform data structure which allows
passing integrating specific details like bus name, wait function to
complete MDIO operations and PHY mask.
We also define what the platform device name contract is by defining
UNIMAC_MDIO_DRV_NAME and moving it to the platform_data header.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:24 +0000 (12:04 -0700)]
net: phy: mdio-bcm-unimac: Add debug print for PHY workaround
In order to be stricly identical to what bcmgenet does, add a debug
print when a PHY workaround during bus->reset() is executed. Preliminary
change to moving bcmgenet towards mdio-bcm-unimac.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:23 +0000 (12:04 -0700)]
net: phy: mdio-bcm-unimac: create unique bus names
In preparation for having multiple GENET instances in a system (up to
3), make sure that we do include the bus instance number in the name of
the MDIO bus such that we change it from "unimac-mdio" to
"unimac-mdio-0" for instance.
So far, the only user of this driver is using Device Tree, which uses a
lookup/parenting based technique to map PHY devices to their respective
MDIO bus controllers, hence causing no additional changes.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 31 Jul 2017 19:04:22 +0000 (12:04 -0700)]
net: phy: mdio-bcm-unimac: factor busy polling loop
Factor the code that does the busy polling on the MDIO_BUSY bit since we
will have different code-paths for for completion depending on whether
we are using interrupts or polling.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 31 Jul 2017 21:37:50 +0000 (14:37 -0700)]
Merge branch 'tcp-remove-prequeue-and-header-prediction'
Florian Westphal says:
====================
tcp: remove prequeue and header prediction
During a hallway discussion with Eric Dumazet at Netdev 1.2 in
Tokyo some maybe-not-so-useful-anymore TCP stack features came up,
among these header prediction and prequeueing.
In brief, TCP prequeue assumes a single-process-blocking-read design,
which is not that common anymore. The most frequently used high-performance
networking program that is an excellent fit for these features is netperf.
The idea behind prequeueing is to move part of tcp processing, including
retransmit queue cleaning, to process context.
With (e)poll designs, prequeue is always skipped, so for such programs
this is dead-code removal.
Header prediction is also less useful nowadays.
For packet trains, GRO will do packet aggregation so we do not get the
per-packet benefit that this had before GRO anymore.
Because of SACK, header prediction also will be ineffective once
a connection suffers even light packet losses.
code removal aside, after this change processing always occurs in BH
context, this allows to experiment e.g. with doing bulk freeing of
skb heads when incoming ACKs clean packets from the retransmit queue.
There are no changes since the RFC, except in last patch (i missed
another no-longer-used mib counter). I also edited a few commit messages.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:23 +0000 (03:57 +0200)]
tcp: remove unused mib counters
was used by tcp prequeue and header prediction.
TCPFORWARDRETRANS use was removed in january.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:22 +0000 (03:57 +0200)]
tcp: remove CA_ACK_SLOWPATH
re-indent tcp_ack, and remove CA_ACK_SLOWPATH; it is always set now.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:21 +0000 (03:57 +0200)]
tcp: remove header prediction
Like prequeue, I am not sure this is overly useful nowadays.
If we receive a train of packets, GRO will aggregate them if the
headers are the same (HP predates GRO by several years) so we don't
get a per-packet benefit, only a per-aggregated-packet one.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:20 +0000 (03:57 +0200)]
tcp: remove low_latency sysctl
Was only checked by the removed prequeue code.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:19 +0000 (03:57 +0200)]
tcp: reindent two spots after prequeue removal
These two branches are now always true, remove the conditional.
objdiff shows no changes.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Sun, 30 Jul 2017 01:57:18 +0000 (03:57 +0200)]
tcp: remove prequeue support
prequeue is a tcp receive optimization that moves part of rx processing
from bh to process context.
This only works if the socket being processed belongs to a process that
is blocked in recv on that socket.
In practice, this doesn't happen anymore that often because nowadays
servers tend to use an event driven (epoll) model.
Even normal client applications (web browsers) commonly use many tcp
connections in parallel.
This has measureable impact only in netperf (which uses plain recv and
thus allows prequeue use) from host to locally running vm (~4%), however,
there were no changes when using netperf between two physical hosts with
ixgbe interfaces.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>