Tom Herbert [Sun, 15 Jun 2014 06:24:03 +0000 (23:24 -0700)]
net: Fix save software checksum complete
Geert reported issues regarding checksum complete and UDP.
The logic introduced in commit
7e3cead5172927732f51fde
("net: Save software checksum complete") is not correct.
This patch:
1) Restores code in __skb_checksum_complete_header except for setting
CHECKSUM_UNNECESSARY. This function may be calculating checksum on
something less than skb->len.
2) Adds saving checksum to __skb_checksum_complete. The full packet
checksum 0..skb->len is calculated without adding in pseudo header.
This value is saved in skb->csum and then the pseudo header is added
to that to derive the checksum for validation.
3) In both __skb_checksum_complete_header and __skb_checksum_complete,
set skb->csum_valid to whether checksum of zero was computed. This
allows skb_csum_unnecessary to return true without changing to
CHECKSUM_UNNECESSARY which was done previously.
4) Copy new csum related bits in __copy_skb_header.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Sun, 15 Jun 2014 06:23:52 +0000 (23:23 -0700)]
net: Fix GSO constants to match NETIF flags
Joseph Gasparakis reported that VXLAN GSO offload stopped working with
i40e device after recent UDP changes. The problem is that the
SKB_GSO_* bits are out of sync with the corresponding NETIF flags. This
patch fixes that. Also, we add BUILD_BUG_ONs in net_gso_ok for several
GSO constants that were missing to avoid the problem in the future.
Reported-by: Joseph Gasparakis <joseph.gasparakis@intel.com>
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 12 Jun 2014 23:13:06 +0000 (16:13 -0700)]
udp: ipv4: do not waste time in __udp4_lib_mcast_demux_lookup
Its too easy to add thousand of UDP sockets on a particular bucket,
and slow down an innocent multicast receiver.
Early demux is supposed to be an optimization, we should avoid spending
too much time in it.
It is interesting to note __udp4_lib_demux_lookup() only tries to
match first socket in the chain.
10 is the threshold we already have in __udp4_lib_lookup() to switch
to secondary hash.
Fixes: 421b3885bf6d5 ("udp: ipv4: Add udp early demux")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: David Held <drheld@google.com>
Cc: Shawn Bohrer <sbohrer@rgmadvisors.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 12 Jun 2014 18:53:10 +0000 (11:53 -0700)]
vxlan: use dev->needed_headroom instead of dev->hard_header_len
When we mirror packets from a vxlan tunnel to other device,
the mirror device should see the same packets (that is, without
outer header). Because vxlan tunnel sets dev->hard_header_len,
tcf_mirred() resets mac header back to outer mac, the mirror device
actually sees packets with outer headers
Vxlan tunnel should set dev->needed_headroom instead of
dev->hard_header_len, like what other ip tunnels do. This fixes
the above problem.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: stephen hemminger <stephen@networkplumber.org>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dimitris Michailidis [Fri, 13 Jun 2014 21:11:14 +0000 (14:11 -0700)]
MAINTAINERS: update cxgb4 maintainer
Hari's been doing the patch submissions for a while now and he'll be
taking over as maintainer.
Signed-off-by: Dimitris Michailidis <dm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 12 Jun 2014 21:27:40 +0000 (14:27 -0700)]
Merge git://git./linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
1) Seccomp BPF filters can now be JIT'd, from Alexei Starovoitov.
2) Multiqueue support in xen-netback and xen-netfront, from Andrew J
Benniston.
3) Allow tweaking of aggregation settings in cdc_ncm driver, from Bjørn
Mork.
4) BPF now has a "random" opcode, from Chema Gonzalez.
5) Add more BPF documentation and improve test framework, from Daniel
Borkmann.
6) Support TCP fastopen over ipv6, from Daniel Lee.
7) Add software TSO helper functions and use them to support software
TSO in mvneta and mv643xx_eth drivers. From Ezequiel Garcia.
8) Support software TSO in fec driver too, from Nimrod Andy.
9) Add Broadcom SYSTEMPORT driver, from Florian Fainelli.
10) Handle broadcasts more gracefully over macvlan when there are large
numbers of interfaces configured, from Herbert Xu.
11) Allow more control over fwmark used for non-socket based responses,
from Lorenzo Colitti.
12) Do TCP congestion window limiting based upon measurements, from Neal
Cardwell.
13) Support busy polling in SCTP, from Neal Horman.
14) Allow RSS key to be configured via ethtool, from Venkata Duvvuru.
15) Bridge promisc mode handling improvements from Vlad Yasevich.
16) Don't use inetpeer entries to implement ID generation any more, it
performs poorly, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
tcp: fixing TLP's FIN recovery
net: fec: Add software TSO support
net: fec: Add Scatter/gather support
net: fec: Increase buffer descriptor entry number
net: fec: Factorize feature setting
net: fec: Enable IP header hardware checksum
net: fec: Factorize the .xmit transmit function
bridge: fix compile error when compiling without IPv6 support
bridge: fix smatch warning / potential null pointer dereference
via-rhine: fix full-duplex with autoneg disable
bnx2x: Enlarge the dorq threshold for VFs
bnx2x: Check for UNDI in uncommon branch
bnx2x: Fix 1G-baseT link
bnx2x: Fix link for KR with swapped polarity lane
sctp: Fix sk_ack_backlog wrap-around problem
net/core: Add VF link state control policy
net/fsl: xgmac_mdio is dependent on OF_MDIO
net/fsl: Make xgmac_mdio read error message useful
net_sched: drr: warn when qdisc is not work conserving
...
Linus Torvalds [Thu, 12 Jun 2014 20:33:29 +0000 (13:33 -0700)]
Merge tag 'dm-3.16-changes' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
"This pull request is later than I'd have liked because I was waiting
for some performance data to help finally justify sending the
long-standing dm-crypt cpu scalability improvements upstream.
Unfortunately we came up short, so those dm-crypt changes will
continue to wait, but it seems we're not far off.
. Add dm_accept_partial_bio interface to DM core to allow DM targets
to only process a portion of a bio, the remainder being sent in the
next bio. This enables the old dm snapshot-origin target to only
split write bios on chunk boundaries, read bios are now sent to the
origin device unchanged.
. Add DM core support for disabling WRITE SAME if the underlying SCSI
layer disables it due to command failure.
. Reduce lock contention in DM's bio-prison.
. A few small cleanups and fixes to dm-thin and dm-era"
* tag 'dm-3.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin: update discard_granularity to reflect the thin-pool blocksize
dm bio prison: implement per bucket locking in the dm_bio_prison hash table
dm: remove symbol export for dm_set_device_limits
dm: disable WRITE SAME if it fails
dm era: check for a non-NULL metadata object before closing it
dm thin: return ENOSPC instead of EIO when error_if_no_space enabled
dm thin: cleanup noflush_work to use a proper completion
dm snapshot: do not split read bios sent to snapshot-origin target
dm snapshot: allocate a per-target structure for snapshot-origin target
dm: introduce dm_accept_partial_bio
dm: change sector_count member in clone_info from sector_t to unsigned
Linus Torvalds [Thu, 12 Jun 2014 20:20:24 +0000 (13:20 -0700)]
Merge tag 'pci-v3.16-changes-2' of git://git./linux/kernel/git/helgaas/pci
Pull more PCI updates from Bjorn Helgaas:
"Here are some more things I'd like to see in v3.16-rc1:
- DMA alias iterator, part of some work to fix IOMMU issues
- MVEBU, Tegra, DesignWare changes that I forgot to include before
- Some whitespace code cleanup
Details:
IOMMU
- Add DMA alias iterator (Alex Williamson)
- Add DMA alias quirks for ASMedia, ITE, Tundra bridges (Alex Williamson)
- Add DMA alias quirks for Marvell, Ricoh devices (Alex Williamson)
- Add DMA alias quirk for HighPoint devices (Jérôme Carretero)
MSI
- Fix leak in free_msi_irqs() (Alexei Starovoitov)
Marvell MVEBU
- Remove unnecessary use of 'conf_lock' spinlock (Andrew Murray)
- Avoid setting an undefined window size (Jason Gunthorpe)
- Allow several windows with the same target/attribute (Thomas Petazzoni)
- Split PCIe BARs into multiple MBus windows when needed (Thomas Petazzoni)
- Fix off-by-one in the computed size of the mbus windows (Willy Tarreau)
NVIDIA Tegra
- Use new OF interrupt mapping when possible (Lucas Stach)
Synopsys DesignWare
- Remove unnecessary use of 'conf_lock' spinlock (Andrew Murray)
- Use new OF interrupt mapping when possible (Lucas Stach)
- Split Exynos and i.MX bindings (Lucas Stach)
- Fix comment for setting number of lanes (Mohit Kumar)
- Fix iATU programming for cfg1, io and mem viewport (Mohit Kumar)
Miscellaneous
- EXPORT_SYMBOL cleanup (Ryan Desfosses)
- Whitespace cleanup (Ryan Desfosses)
- Merge multi-line quoted strings (Ryan Desfosses)"
* tag 'pci-v3.16-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (21 commits)
PCI: Add function 1 DMA alias quirk for HighPoint RocketRaid 642L
PCI/MSI: Fix memory leak in free_msi_irqs()
PCI: Merge multi-line quoted strings
PCI: Whitespace cleanup
PCI: Move EXPORT_SYMBOL so it immediately follows function/variable
PCI: Add bridge DMA alias quirk for ITE bridge
PCI: designware: Split Exynos and i.MX bindings
PCI: Add bridge DMA alias quirk for ASMedia and Tundra bridges
PCI: Add support for PCIe-to-PCI bridge DMA alias quirks
PCI: Add function 1 DMA alias quirk for Marvell devices
PCI: Add function 0 DMA alias quirk for Ricoh devices
PCI: Add support for DMA alias quirks
PCI: Convert pci_dev_flags definitions to bit shifts
PCI: Add DMA alias iterator
PCI: mvebu: Use '%pa' for printing 'phys_addr_t' type
PCI: mvebu: Remove unnecessary use of 'conf_lock' spinlock
PCI: designware: Remove unnecessary use of 'conf_lock' spinlock
PCI: designware: Use new OF interrupt mapping when possible
PCI: designware: Fix iATU programming for cfg1, io and mem viewport
PCI: designware: Fix comment for setting number of lanes
...
Linus Torvalds [Thu, 12 Jun 2014 20:14:19 +0000 (13:14 -0700)]
Merge tag 'pm+acpi-3.16-rc1-2' of git://git./linux/kernel/git/rafael/linux-pm
Pull more ACPI and power management updates from Rafael Wysocki:
"These are fixups on top of the previous PM+ACPI pull request,
regression fixes (ACPI hotplug, cpufreq ppc-corenet), other bug fixes
(ACPI reset, cpufreq), new PM trace points for system suspend
profiling and a copyright notice update.
Specifics:
- I didn't remember correctly that the Hans de Goede's ACPI video
patches actually didn't flip the video.use_native_backlight
default, although we had discussed that and decided to do that.
Since I said we would do that in the previous PM+ACPI pull request,
make that change for real now.
- ACPI bus check notifications for PCI host bridges don't cause the
bus below the host bridge to be checked for changes as they should
because of a mistake in the ACPI-based PCI hotplug (ACPIPHP)
subsystem that forgets to add hotplug contexts to PCI host bridge
ACPI device objects. Create hotplug contexts for PCI host bridges
too as appropriate.
- Revert recent cpufreq commit related to the big.LITTLE cpufreq
driver that breaks arm64 builds.
- Fix for a regression in the ppc-corenet cpufreq driver introduced
during the 3.15 cycle and causing the driver to use the remainder
from do_div instead of the quotient. From Ed Swarthout.
- Resets triggered by panic activate a BUG_ON() in vmalloc.c on
systems where the ACPI reset register is located in memory address
space. Fix from Randy Wright.
- Fix for a problem with cpufreq governors that decisions made by
them may be suboptimal due to the fact that deferrable timers are
used by them for CPU load sampling. From Srivatsa S Bhat.
- Fix for a problem with the Tegra cpufreq driver where the CPU
frequency is temporarily switched to a "stable" level that is
different from both the initial and target frequencies during
transitions which causes udelay() to expire earlier than it should
sometimes. From Viresh Kumar.
- New trace points and rework of some existing trace points for
system suspend/resume profiling from Todd Brandt.
- Assorted cpufreq fixes and cleanups from Stratos Karafotis and
Viresh Kumar.
- Copyright notice update for suspend-and-cpuhotplug.txt from
Srivatsa S Bhat"
* tag 'pm+acpi-3.16-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / hotplug / PCI: Add hotplug contexts to PCI host bridges
PM / sleep: trace events for device PM callbacks
cpufreq: cpufreq-cpu0: remove dependency on THERMAL and REGULATOR
cpufreq: tegra: update comment for clarity
cpufreq: intel_pstate: Remove duplicate CPU ID check
cpufreq: Mark CPU0 driver with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag
PM / Documentation: Update copyright in suspend-and-cpuhotplug.txt
cpufreq: governor: remove copy_prev_load from 'struct cpu_dbs_common_info'
cpufreq: governor: Be friendly towards latency-sensitive bursty workloads
PM / sleep: trace events for suspend/resume
cpufreq: ppc-corenet-cpu-freq: do_div use quotient
Revert "cpufreq: Enable big.LITTLE cpufreq driver on arm64"
cpufreq: Tegra: implement intermediate frequency callbacks
cpufreq: add support for intermediate (stable) frequencies
ACPI / video: Change the default for video.use_native_backlight to 1
ACPI: Fix bug when ACPI reset register is implemented in system memory
Linus Torvalds [Thu, 12 Jun 2014 20:08:09 +0000 (13:08 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/cooloney/linux-leds
Pull LED updates from Bryan Wu:
"I just found merge window is open and I'm quite busy and almost forget
to send out this pull request. Thanks Russell and Alexandre ping me
about this.
So basically we got some clean up and leds-pwm fixing patches from
Russell"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds:
leds: Remove duplicated OOM message for individual driver
drivers/leds: Replace __get_cpu_var use through this_cpu_ptr
leds: lp55xx: add DT bindings for LP55231
leds: 88pm860x: Fix missing refcount decrement for parent of_node
leds: 88pm860x: Use of_get_child_by_name
leds: leds-pwm: add DT support for LEDs wired to supply
leds: leds-pwm: implement PWM inversion
leds: leds-pwm: convert OF parsing code to use led_pwm_add()
leds: leds-pwm: provide a common function to setup a single led-pwm device
leds: pca9685: Remove leds-pca9685 driver
dell-led: add mic mute led interface
Linus Torvalds [Thu, 12 Jun 2014 19:45:50 +0000 (12:45 -0700)]
Merge tag 'backlight-for-linus-3.16' of git://git./linux/kernel/git/lee/backlight
Pull backlight fixes from Lee Jones:
"This merely contains some very basic build/run-time bug fixes"
* tag 'backlight-for-linus-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: gpio-backlight: Fix warning when the GPIO is on a I2C chip
video/backlight: s6e63m0: Fix string type mismatch
video/backlight: LP8788 needs PWM
video/backlight: LP855X needs PWM
video/pxa: LCD_CORGI needs BACKLIGHT_CLASS_DEVICE
video/backlight: LM3630A needs PWM
Linus Torvalds [Thu, 12 Jun 2014 19:42:32 +0000 (12:42 -0700)]
Merge tag 'mfd-for-linus-3.16-1' of git://git./linux/kernel/git/lee/mfd
Pull more MFD updates from Lee Jones:
"I missed collecting these patches due to a branch/tag naming
ambiguity. Completely my own fault, as I mindlessly named a branch
and tag identically. Sorry for the fuss.
This pull-request contains some misplaced patches from Tony Lindgren
that should have been part of the initial one"
* tag 'mfd-for-linus-3.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle
mfd: twl4030-power: Add support for board specific configuration
mfd: twl4030-power: Add recommended idle configuration
mfd: twl4030-power: Add generic reset configuration
mfd: twl4030-power: Fix some defines for SW_EVENTS
mfd: twl4030-power: Fix hang on reboot if sleep configuration was loaded earlier
Linus Torvalds [Thu, 12 Jun 2014 19:20:15 +0000 (12:20 -0700)]
Merge tag 'mmc-v3.16-2' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes for 3.16.
- fix some various compiler warnings
- make atmel-mci compile again
- fix regression for sdhci-msm"
* tag 'mmc-v3.16-2' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: simplify SDHCI Kconfig dependencies
mmc: omap: don't select TPS65010
mmc: mvsdio: avoid compiler warning
mmc: atmel-mci: incude asm/cacheclush.h
mmc: sdhci-msm: Fix fallout from sdhci refactoring
mmc: usdhi6rol0: fix compiler warnings
Linus Torvalds [Thu, 12 Jun 2014 18:32:30 +0000 (11:32 -0700)]
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main drm merge window pull request, changes all over the
place, mostly normal levels of churn.
Highlights:
Core drm:
More cleanups, fix race on connector/encoder naming, docs updates,
object locking rework in prep for atomic modeset
i915:
mipi DSI support, valleyview power fixes, cursor size fixes,
execlist refactoring, vblank improvements, userptr support, OOM
handling improvements
radeon:
GPUVM tuning and large page size support, gart fixes, deep color
HDMI support, HDMI audio cleanups
nouveau:
- displayport rework should fix lots of issues
- initial gk20a support
- gk110b support
- gk208 fixes
exynos:
probe order fixes, HDMI changes, IPP consolidation
msm:
debugfs updates, misc fixes
ast:
ast2400 support, sync with UMS driver
tegra:
cleanups, hdmi + hw cursor for Tegra 124.
panel:
fixes existing panels add some new ones.
ipuv3:
moved from staging to drivers/gpu"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (761 commits)
drm/nouveau/disp/dp: fix tmds passthrough on dp connector
drm/nouveau/dp: probe dpcd to determine connectedness
drm/nv50-: trigger update after all connectors disabled
drm/nv50-: prepare for attaching a SOR to multiple heads
drm/gf119-/disp: fix debug output on update failure
drm/nouveau/disp/dp: make use of postcursor when its available
drm/g94-/disp/dp: take max pullup value across all lanes
drm/nouveau/bios/dp: parse lane postcursor data
drm/nouveau/dp: fix support for dpms
drm/nouveau: register a drm_dp_aux channel for each dp connector
drm/g94-/disp: add method to power-off dp lanes
drm/nouveau/disp/dp: maintain link in response to hpd signal
drm/g94-/disp: bash and wait for something after changing lane power regs
drm/nouveau/disp/dp: split link config/power into two steps
drm/nv50/disp: train PIOR-attached DP from second supervisor
drm/nouveau/disp/dp: make use of existing output data for link training
drm/gf119/disp: start removing direct vbios parsing from supervisor
drm/nv50/disp: start removing direct vbios parsing from supervisor
drm/nouveau/disp/dp: maintain receiver caps in response to hpd signal
drm/nouveau/disp/dp: create subclass for dp outputs
...
Michal Schmidt [Wed, 28 May 2014 12:15:19 +0000 (14:15 +0200)]
rtnetlink: fix userspace API breakage for iproute2 < v3.9.0
When running RHEL6 userspace on a current upstream kernel, "ip link"
fails to show VF information.
The reason is a kernel<->userspace API change introduced by commit
88c5b5ce5cb57 ("rtnetlink: Call nlmsg_parse() with correct header length"),
after which the kernel does not see iproute2's IFLA_EXT_MASK attribute
in the netlink request.
iproute2 adjusted for the API change in its commit
63338dca4513
("libnetlink: Use ifinfomsg instead of rtgenmsg in rtnl_wilddump_req_filter").
The problem has been noticed before:
http://marc.info/?l=linux-netdev&m=
136692296022182&w=2
(Subject: Re: getting VF link info seems to be broken in 3.9-rc8)
We can do better than tell those with old userspace to upgrade. We can
recognize the old iproute2 in the kernel by checking the netlink message
length. Even when including the IFLA_EXT_MASK attribute, its netlink
message is shorter than struct ifinfomsg.
With this patch "ip link" shows VF information in both old and new
iproute2 versions.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Per Hurtig [Thu, 12 Jun 2014 15:08:32 +0000 (17:08 +0200)]
tcp: fixing TLP's FIN recovery
Fix to a problem observed when losing a FIN segment that does not
contain data. In such situations, TLP is unable to recover from
*any* tail loss and instead adds at least PTO ms to the
retransmission process, i.e., RTO = RTO + PTO.
Signed-off-by: Per Hurtig <per.hurtig@kau.se>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 12 Jun 2014 18:02:08 +0000 (11:02 -0700)]
Merge branch 'fec'
Fugang Duan says:
====================
net: fec: Enable Software TSO to improve the tx performance
Add SG and software TSO support for FEC.
This feature allows to improve outbound throughput performance.
Tested on imx6dl sabresd board, running iperf tcp tests shows:
* 82% improvement comparing with NO SG & TSO patch
$ ethtool -K eth0 sg on
$ ethtool -K eth0 tso on
[ 3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 181 MBytes 506 Mbits/sec
* cpu loading is 30%
$ ethtool -K eth0 sg off
$ ethtool -K eth0 tso off
[ 3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 99.5 MBytes 278 Mbits/sec
FEC HW support IP header and TCP/UDP hw checksum, support multi buffer descriptor transfer
one frame, but don't support HW TSO. And imx6q/dl SOC FEC Gbps speed has HW bus Bandwidth
limitation (400Mbps ~ 700Mbps), imx6sx SOC FEC Gbps speed has no HW bandwidth limitation.
The patch set just enable TSO feature, which is done following the mv643xx_eth driver.
Test result analyze:
imx6dl sabresd board: there have 82% improvement, since imx6dl FEC HW has bandwidth limitation,
the performance with SW TSO is a milestone.
Addition test:
imx6sx sdb board:
upstream still don't support imx6sx due to some patches being upstream... they use same FEC IP.
Use the SW TSO patches test imx6sx sdb board in internal kernel tree:
No SW TSO patch: tx bandwidth 840Mbps, cpu loading is 100%.
SW TSO patch: tx bandwidth 942Mbps, cpu loading is 65%.
It means the patch set have great improvement for imx6sx FEC performance.
V2:
* From Frank Li's suggestion:
Change the API "fec_enet_txdesc_entry_free" name to "fec_enet_get_free_txdesc_num".
* Summary David Laight and Eric Dumazet's thoughts:
RX BD entry number change to 256.
* From ezequiel's suggestion:
Follow the latest TSO fixes from his solution to rework the queue stop/wake-up.
Avoid unmapping the TSO header buffers.
* From Eric Dumazet's suggestion:
Avoid more bytes copy, just copying the unaligned part of the payload into first
descriptor. The suggestion will bring more complex for the driver, and imx6dl FEC
DMA need 16 bytes alignment, but cpu loading is not problem that cpu loading is
30%, the current performance is so better. Later chip like imx6sx Gigbit FEC DMA
support byte alignment, so there don't exist memory copy. So, the V2 version drop
the suggestion.
Anyway, thanks for Eric's response and suggestion.
V3:
* From David Laight's feedback:
Decide to drop RX BD entry number change for the SW TSO patch set.
I will generate one separate patch to increase RX BDs entry for interrupt coalescing feature which
will be supported in my later patch set.
V4:
* From David Laight's feedback:
Remove the conditional in .fec_enet_get_bd_index().
V5:
* Patch #4 update:
From David Laight's feedback:
"expect fec_enet_get_free_txdesc_num() to return one less than it does currently."
Change the function:
Return space available, 0..size-1. it always leave one free entry. Which is same as linux circ_buf.
Thanks for Eric and ezequiel's help and idea.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:23 +0000 (08:16 +0800)]
net: fec: Add software TSO support
Add software TSO support for FEC.
This feature allows to improve outbound throughput performance.
Tested on imx6dl sabresd board, running iperf tcp tests shows:
- 16.2% improvement comparing with FEC SG patch
- 82% improvement comparing with NO SG & TSO patch
$ ethtool -K eth0 tso on
$ iperf -c 10.192.242.167 -t 3 &
[ 3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 181 MBytes 506 Mbits/sec
During the testing, CPU loading is 30%.
Since imx6dl FEC Bandwidth is limited to SOC system bus bandwidth, the
performance with SW TSO is a milestone.
CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
CC: Li Frank <B20596@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:22 +0000 (08:16 +0800)]
net: fec: Add Scatter/gather support
Add Scatter/gather support for FEC.
This feature allows to improve outbound throughput performance.
Tested on imx6dl sabresd board:
Running iperf tests shows a 55.4% improvement.
$ ethtool -K eth0 sg off
$ iperf -c 10.192.242.167 -t 3 &
[ 3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 99.5 MBytes 278 Mbits/sec
$ ethtool -K eth0 sg on
$ iperf -c 10.192.242.167 -t 3 &
[ 3] local 10.192.242.108 port 52617 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 154 MBytes 432 Mbits/sec
CC: Li Frank <B20596@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:21 +0000 (08:16 +0800)]
net: fec: Increase buffer descriptor entry number
In order to support SG, software TSO, let's increase BD entry number.
CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:20 +0000 (08:16 +0800)]
net: fec: Factorize feature setting
In order to enhance the code readable, let's factorize the
feature list.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:19 +0000 (08:16 +0800)]
net: fec: Enable IP header hardware checksum
IP header checksum is calcalated by network layer in default.
To support software TSO, it is better to use HW calculate the
IP header checksum.
FEC hw checksum feature request the checksum field in frame
is zero, otherwise the calculative CRC is not correct.
For segmentated TCP packet, HW calculate the IP header checksum again,
it doesn't bring any impact. For SW TSO, HW calculated checksum bring
better performance.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nimrod Andy [Thu, 12 Jun 2014 00:16:18 +0000 (08:16 +0800)]
net: fec: Factorize the .xmit transmit function
Make the code more readable and easy to support other features like
SG, TSO, moving the common transmit function to one api.
And the patch also factorize the getting BD index to it own function.
CC: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Lüssing [Wed, 11 Jun 2014 23:41:24 +0000 (01:41 +0200)]
bridge: fix compile error when compiling without IPv6 support
Some fields in "struct net_bridge" aren't available when compiling the
kernel without IPv6 support. Therefore adding a check/macro to skip the
complaining code sections in that case.
Introduced by
2cd4143192e8c60f66cb32c3a30c76d0470a372d
("bridge: memorize and export selected IGMP/MLD querier port")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Lüssing [Wed, 11 Jun 2014 23:41:23 +0000 (01:41 +0200)]
bridge: fix smatch warning / potential null pointer dereference
"New smatch warnings:
net/bridge/br_multicast.c:1368 br_ip6_multicast_query() error:
we previously assumed 'group' could be null (see line 1349)"
In the rare (sort of broken) case of a query having a Maximum
Response Delay of zero, we could create a potential null pointer
dereference.
Fixing this by skipping the multicast specific MLD Query parsing again
if no multicast group address is available.
Introduced by
dc4eb53a996a78bfb8ea07b47423ff5a3aadc362
("bridge: adhere to querier election mechanism specified by RFCs")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
François Cachereul [Thu, 12 Jun 2014 10:11:25 +0000 (12:11 +0200)]
via-rhine: fix full-duplex with autoneg disable
With some specific configuration (VT6105M on Soekris 5510 and depending
on the device at the other end), fragmented packets were not transmitted
when forcing 100 full-duplex with autoneg disable.
This fix now write full-duplex chips register when forcing full or
half-duplex not only when autoneg is enable.
Signed-off-by: François Cachereul <f.cachereul@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 12 Jun 2014 17:30:18 +0000 (10:30 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
"This the bunch that sat in -next + lock_parent() fix. This is the
minimal set; there's more pending stuff.
In particular, I really hope to get acct.c fixes merged this cycle -
we need that to deal sanely with delayed-mntput stuff. In the next
pile, hopefully - that series is fairly short and localized
(kernel/acct.c, fs/super.c and fs/namespace.c). In this pile: more
iov_iter work. Most of prereqs for ->splice_write with sane locking
order are there and Kent's dio rewrite would also fit nicely on top of
this pile"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (70 commits)
lock_parent: don't step on stale ->d_parent of all-but-freed one
kill generic_file_splice_write()
ceph: switch to iter_file_splice_write()
shmem: switch to iter_file_splice_write()
nfs: switch to iter_splice_write_file()
fs/splice.c: remove unneeded exports
ocfs2: switch to iter_file_splice_write()
->splice_write() via ->write_iter()
bio_vec-backed iov_iter
optimize copy_page_{to,from}_iter()
bury generic_file_aio_{read,write}
lustre: get rid of messing with iovecs
ceph: switch to ->write_iter()
ceph_sync_direct_write: stop poking into iov_iter guts
ceph_sync_read: stop poking into iov_iter guts
new helper: copy_page_from_iter()
fuse: switch to ->write_iter()
btrfs: switch to ->write_iter()
ocfs2: switch to ->write_iter()
xfs: switch to ->write_iter()
...
David S. Miller [Thu, 12 Jun 2014 17:28:49 +0000 (10:28 -0700)]
Merge branch 'bnx2x'
Yuval Mintz says:
====================
bnx2x: Bug fixes patch series
This patch series contains various bug fixes - 2 link related fixes,
one sriov-related issue and an additional fix for a theoretical bug
on new boards.
Please consider applying these patches to `net'.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ariel Elior [Thu, 12 Jun 2014 04:55:32 +0000 (07:55 +0300)]
bnx2x: Enlarge the dorq threshold for VFs
A malicious VF might try to starve the other VFs & PF by creating
contineous doorbell floods. In order to negate this, HW has a threshold of
doorbells per client, which will stop the client doorbells from arriving
if crossed.
The threshold currently configured for VFs is too low - under extreme traffic
scenarios, it's possible for a VF to reach the threshold and thus for its
fastpath to stop working.
Signed-off-by: Ariel Elior <ariel.elior@qlogic.com>
Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Thu, 12 Jun 2014 04:55:31 +0000 (07:55 +0300)]
bnx2x: Check for UNDI in uncommon branch
If L2FW utilized by the UNDI driver has the same version number as that
of the regular FW, a driver loading after UNDI and receiving an uncommon
answer from management will mistakenly assume the loaded FW matches its
own requirement and try to exist the flow via FLR.
Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: Ariel Elior <ariel.elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Thu, 12 Jun 2014 04:55:30 +0000 (07:55 +0300)]
bnx2x: Fix 1G-baseT link
Set the phy access mode even in case of link-flap avoidance.
Signed-off-by: Yaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: Ariel Elior <ariel.elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yaniv Rosner [Thu, 12 Jun 2014 04:55:29 +0000 (07:55 +0300)]
bnx2x: Fix link for KR with swapped polarity lane
This avoids clearing the RX polarity setting in KR mode when polarity lane
is swapped, as otherwise this will result in failed link.
Signed-off-by: Yaniv Rosner <yaniv.rosner@qlogic.com>
Signed-off-by: Yuval Mintz <yuval.mintz@qlogic.com>
Signed-off-by: Ariel Elior <ariel.elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xufeng Zhang [Thu, 12 Jun 2014 02:53:36 +0000 (10:53 +0800)]
sctp: Fix sk_ack_backlog wrap-around problem
Consider the scenario:
For a TCP-style socket, while processing the COOKIE_ECHO chunk in
sctp_sf_do_5_1D_ce(), after it has passed a series of sanity check,
a new association would be created in sctp_unpack_cookie(), but afterwards,
some processing maybe failed, and sctp_association_free() will be called to
free the previously allocated association, in sctp_association_free(),
sk_ack_backlog value is decremented for this socket, since the initial
value for sk_ack_backlog is 0, after the decrement, it will be 65535,
a wrap-around problem happens, and if we want to establish new associations
afterward in the same socket, ABORT would be triggered since sctp deem the
accept queue as full.
Fix this issue by only decrementing sk_ack_backlog for associations in
the endpoint's list.
Fix-suggested-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Xufeng Zhang <xufeng.zhang@windriver.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rafael J. Wysocki [Thu, 12 Jun 2014 11:43:08 +0000 (13:43 +0200)]
Merge branch 'pm-sleep'
* pm-sleep:
PM / sleep: trace events for device PM callbacks
PM / sleep: trace events for suspend/resume
Rafael J. Wysocki [Thu, 12 Jun 2014 11:43:02 +0000 (13:43 +0200)]
Merge branch 'pm-cpufreq'
* pm-cpufreq:
cpufreq: cpufreq-cpu0: remove dependency on THERMAL and REGULATOR
cpufreq: tegra: update comment for clarity
cpufreq: intel_pstate: Remove duplicate CPU ID check
cpufreq: Mark CPU0 driver with CPUFREQ_NEED_INITIAL_FREQ_CHECK flag
cpufreq: governor: remove copy_prev_load from 'struct cpu_dbs_common_info'
cpufreq: governor: Be friendly towards latency-sensitive bursty workloads
cpufreq: ppc-corenet-cpu-freq: do_div use quotient
Revert "cpufreq: Enable big.LITTLE cpufreq driver on arm64"
cpufreq: Tegra: implement intermediate frequency callbacks
cpufreq: add support for intermediate (stable) frequencies
Rafael J. Wysocki [Thu, 12 Jun 2014 11:42:37 +0000 (13:42 +0200)]
Merge branches 'acpi-general' and 'acpi-video'
* acpi-general:
ACPI: Fix bug when ACPI reset register is implemented in system memory
* acpi-video:
ACPI / video: Change the default for video.use_native_backlight to 1
Rafael J. Wysocki [Thu, 12 Jun 2014 11:36:27 +0000 (13:36 +0200)]
Merge branch 'acpi-hotplug'
* acpi-hotplug:
ACPI / hotplug / PCI: Add hotplug contexts to PCI host bridges
Arnd Bergmann [Thu, 5 Jun 2014 21:14:41 +0000 (23:14 +0200)]
mmc: simplify SDHCI Kconfig dependencies
We have a number of front-end drivers for SDHCI_PLTFM, some of them
use 'select MMC_SDHCI_PLTFM', others use 'depends on'. This is
inconsistent and confusing, and in one case has also led to a
build error because of incomplete dependencies:
warning: (MMC_SDHCI_PXAV3 && MMC_SDHCI_PXAV2 && MMC_SDHCI_BCM_KONA) selects MMC_SDHCI_PLTFM which has unmet direct dependencies (MMC && MMC_SDHCI)
drivers/built-in.o: In function `sdhci_sirf_resume':
:(.text+0xaaacb4): undefined reference to `sdhci_resume_host'
drivers/built-in.o: In function `sdhci_sirf_suspend':
:(.text+0xaaacf8): undefined reference to `sdhci_suspend_host'
drivers/built-in.o: In function `sdhci_sirf_probe':
:(.text+0xaaaf44): undefined reference to `sdhci_add_host'
:(.text+0xaaaf50): undefined reference to `sdhci_remove_host'
This changes Kconfig to use 'depends on MMC_SDHCI_PLTFM' for all these
cases, to fix the build error and make the logic more logical.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Arnd Bergmann [Thu, 5 Jun 2014 21:14:40 +0000 (23:14 +0200)]
mmc: omap: don't select TPS65010
The MMC host driver should not select the pmic driver, since that
may have other dependencies, notably i2c in this case. It's not
clear what the exact requirement of the driver is, but to preserve
the behavior, this patch changes the 'select' into 'depends on',
meaning you now have to turn on TPS65010 explicitly and then
MMC_OMAP.
Found during randconfig build testing.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: linux-omap@vger.kernel.org
Cc: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Arnd Bergmann [Thu, 5 Jun 2014 21:14:39 +0000 (23:14 +0200)]
mmc: mvsdio: avoid compiler warning
gcc correctly points out that hw_state can be used uninitially
in the mvsd_setup_data() function. This rearranges the function
to ensure it always contains a proper value.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Chris Ball <chris@printf.net>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: linux-mmc@vger.kernel.org
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Arnd Bergmann [Thu, 5 Jun 2014 21:14:38 +0000 (23:14 +0200)]
mmc: atmel-mci: incude asm/cacheclush.h
This avoids a build error due to the use of flush_dcache_page.
drivers/mmc/host/atmel-mci.c: In function 'atmci_read_data_pio':
drivers/mmc/host/atmel-mci.c:1870:5: error: implicit declaration of function 'flush_dcache_page' [-Werror=implicit-function-declaration]
flush_dcache_page(sg_page(sg));
^
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Stephen Boyd [Tue, 10 Jun 2014 18:27:19 +0000 (11:27 -0700)]
mmc: sdhci-msm: Fix fallout from sdhci refactoring
The sdhci core was refactored recently and some of those
refactorings required changes in every sdhci platform driver.
Those updates happened around the same time as when the msm
driver was merged so the refactorings missed the msm driver.
Hook in the basic library functions so that we can boot apq8074
dragonboards again instead of crashing when we try to jump to
NULL function pointers.
Reported-by: Kevin Hilman <khilman@linaro.org>
Cc: Georgi Djakov <gdjakov@mm-sol.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Kumar Gala <galak@codeaurora.org>
Reviewed-by: Georgi Djakov <gdjakov@mm-sol.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Guennadi Liakhovetski [Wed, 11 Jun 2014 21:30:03 +0000 (23:30 +0200)]
mmc: usdhi6rol0: fix compiler warnings
Fix a number of wrong print formats.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Al Viro [Thu, 12 Jun 2014 04:29:13 +0000 (00:29 -0400)]
lock_parent: don't step on stale ->d_parent of all-but-freed one
Dentry that had been through (or into) __dentry_kill() might be seen
by shrink_dentry_list(); that's normal, it'll be taken off the shrink
list and freed if __dentry_kill() has already finished. The problem
is, its ->d_parent might be pointing to already freed dentry, so
lock_parent() needs to be careful.
We need to check that dentry hasn't already gone into __dentry_kill()
*and* grab rcu_read_lock() before dropping ->d_lock - the latter makes
sure that whatever we see in ->d_parent after dropping ->d_lock it
won't be freed until we drop rcu_read_lock().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 12 Jun 2014 04:27:11 +0000 (00:27 -0400)]
Merge commit '
9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus
Backmerge of dcache.c changes from mainline. It's that, or complete
rebase...
Conflicts:
fs/splice.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 17:31:50 +0000 (13:31 -0400)]
kill generic_file_splice_write()
no callers left
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:40:12 +0000 (04:40 -0400)]
ceph: switch to iter_file_splice_write()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:38:56 +0000 (04:38 -0400)]
shmem: switch to iter_file_splice_write()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:37:17 +0000 (04:37 -0400)]
nfs: switch to iter_splice_write_file()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:35:49 +0000 (04:35 -0400)]
fs/splice.c: remove unneeded exports
ocfs2 was using a bunch of splice.c guts...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:34:23 +0000 (04:34 -0400)]
ocfs2: switch to iter_file_splice_write()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sat, 5 Apr 2014 08:27:08 +0000 (04:27 -0400)]
->splice_write() via ->write_iter()
iter_file_splice_write() - a ->splice_write() instance that gathers the
pipe buffers, builds a bio_vec-based iov_iter covering those and feeds
it to ->write_iter(). A bunch of simple cases coverted to that...
[AV: fixed the braino spotted by Cyrill]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Thu, 12 Jun 2014 04:10:33 +0000 (21:10 -0700)]
Merge tag 'virtio-next-for-linus' of git://git./linux/kernel/git/rusty/linux
Pull virtio updates from Rusty Russell:
"Main excitement is a virtio_scsi fix for alloc holding spinlock on the
abort path, which I refuse to CC stable since (1) I discovered it
myself, and (2) it's been there forever with no reports"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio_scsi: don't call virtqueue_add_sgs(... GFP_NOIO) holding spinlock.
virtio-rng: fixes for device registration/unregistration
virtio-rng: fix boot with virtio-rng device
virtio-rng: support multiple virtio-rng devices
virtio_ccw: introduce device_lost in virtio_ccw_device
virtio: virtio_break_device() to mark all virtqueues broken.
Linus Torvalds [Thu, 12 Jun 2014 00:08:16 +0000 (17:08 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull vhost infrastructure updates from Michael S. Tsirkin:
"This reworks vhost core dropping unnecessary RCU uses in favor of VQ
mutexes which are used on fast path anyway. This fixes worst-case
latency for users which change the memory mappings a lot. Memory
allocation for vhost-net now supports fallback on vmalloc (same as for
vhost-scsi) this makes it possible to create the device on systems
where memory is very fragmented, with slightly lower performance"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost: move memory pointer to VQs
vhost: move acked_features to VQs
vhost: replace rcu with mutex
vhost-net: extend device allocation to vmalloc
Linus Torvalds [Wed, 11 Jun 2014 23:50:01 +0000 (16:50 -0700)]
Merge git://git./linux/kernel/git/cmetcalf/linux-tile
Pull arch/tile changes from Chris Metcalf:
"These mostly just address smaller issues reported to me"
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
arch: tile: kernel: unaligned.c: Cleaning up uninitialized variables
drivers/tty/hvc/hvc_tile.c: use PTR_ERR_OR_ZERO
replace strict_strto* call with kstrto*
tile: Update comments for generic idle conversion
tile: cleanup the comment in init_pgprot
tile: use BOOTMEM_DEFAULT instead of magic number 0 for reserve_bootmem flags
Linus Torvalds [Wed, 11 Jun 2014 23:09:14 +0000 (16:09 -0700)]
Merge tag 'modules-next-for-linus' of git://git./linux/kernel/git/rusty/linux
Pull module updates from Rusty Russell:
"Most of this is cleaning up various driver sysfs permissions so we can
re-add the perm check (we unified the module param and sysfs checks,
but the module ones were stronger so we weakened them temporarily).
Param parsing gets documented, and also "--" now forces args to be
handed to init (and ignored by the kernel).
Module NX/RO protections get tightened: we now set them before calling
parse_args()"
* tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
module: set nx before marking module MODULE_STATE_COMING.
samples/kobject/: avoid world-writable sysfs files.
drivers/hid/hid-picolcd_fb: avoid world-writable sysfs files.
drivers/staging/speakup/: avoid world-writable sysfs files.
drivers/regulator/virtual: avoid world-writable sysfs files.
drivers/scsi/pm8001/pm8001_ctl.c: avoid world-writable sysfs files.
drivers/hid/hid-lg4ff.c: avoid world-writable sysfs files.
drivers/video/fbdev/sm501fb.c: avoid world-writable sysfs files.
drivers/mtd/devices/docg3.c: avoid world-writable sysfs files.
speakup: fix incorrect perms on speakup_acntsa.c
cpumask.h: silence warning with -Wsign-compare
Documentation: Update kernel-parameters.tx
param: hand arguments after -- straight to init
modpost: Fix resource leak in read_dump()
David S. Miller [Wed, 11 Jun 2014 23:02:55 +0000 (16:02 -0700)]
Merge git://git./linux/kernel/git/davem/net
Conflicts:
net/core/rtnetlink.c
net/core/skbuff.c
Both conflicts were very simple overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Doug Ledford [Wed, 11 Jun 2014 14:38:03 +0000 (10:38 -0400)]
net/core: Add VF link state control policy
Commit
1d8faf48c7 (net/core: Add VF link state control) added VF link state
control to the netlink VF nested structure, but failed to add a proper entry
for the new structure into the VF policy table. Add the missing entry so
the table and the actual data copied into the netlink nested struct are in
sync.
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Wed, 11 Jun 2014 18:48:17 +0000 (13:48 -0500)]
net/fsl: xgmac_mdio is dependent on OF_MDIO
Signed-off-by: Shruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shruti Kanetkar [Wed, 11 Jun 2014 18:41:40 +0000 (13:41 -0500)]
net/fsl: Make xgmac_mdio read error message useful
Print the device address, the register number and the PHY ID for
which the MDIO read operation failed
Signed-off-by: Shruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Wed, 11 Jun 2014 18:35:18 +0000 (20:35 +0200)]
net_sched: drr: warn when qdisc is not work conserving
The DRR scheduler requires that items on the active list are work
conserving, i.e. do not hold on to skbs for throttling purposes, etc.
Attaching e.g. tbf renders DRR useless because all other classes on the
active list are delayed as well.
So, warn users that this configuration won't work as expected; we
already do this in couple of other qdiscs, see e.g.
commit
b00355db3f88d96810a60011a30cfb2c3469409d
('pkt_sched: sch_hfsc: sch_htb: Add non-work-conserving warning handler')
The 'const' change is needed to avoid compiler warning ("discards 'const'
qualifier from pointer target type").
tested with:
drr_hier() {
parent=$1
classes=$2
for i in $(seq 1 $classes); do
classid=$parent$(printf %x $i)
tc class add dev eth0 parent $parent classid $classid drr
tc qdisc add dev eth0 parent $classid tbf rate 64kbit burst 256kbit limit 64kbit
done
}
tc qdisc add dev eth0 root handle 1: drr
drr_hier 1: 32
tc filter add dev eth0 protocol all pref 1 parent 1: handle 1 flow hash keys dst perturb 1 divisor 32
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 11 Jun 2014 22:46:17 +0000 (15:46 -0700)]
Merge branch 'inet_csums'
Tom Herbert says:
====================
net: Checksum offload changes - Part IV
I am working on overhauling RX checksum offload. Goals of this effort
are:
- Specify what exactly it means when driver returns CHECKSUM_UNNECESSARY
- Preserve CHECKSUM_COMPLETE through encapsulation layers
- Don't do skb_checksum more than once per packet
- Unify GRO and non-GRO csum verification as much as possible
- Unify the checksum functions (checksum_init)
- Simply code
What is in this fourth patch set:
- Preserve CHECKSUM_COMPLETE instead of changing it to
CHECKSUM_UNNECESSARY. This allows correct reuse in validating multiple
csums in a packet.
- When SW needs to compute the packet checksum, save it as
CHECKSUM_COMPLETE. Also mark that checksum was compute by SW.
- Add skb_gro_postpull_rcsum to udp and vxlan to make GRO work with
CHECKSUM_COMPLETE.
v2: Removed patch setting skb_encapsulation when validating checksum
in tcp_gro_receive
Please review carefully and test if possible, mucking with basic
checksum functions is always a little precarious :-)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Wed, 11 Jun 2014 01:54:26 +0000 (18:54 -0700)]
net: Add skb_gro_postpull_rcsum to udp and vxlan
Need to gro_postpull_rcsum for GRO to work with checksum complete.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Wed, 11 Jun 2014 01:54:19 +0000 (18:54 -0700)]
net: Save software checksum complete
In skb_checksum complete, if we need to compute the checksum for the
packet (via skb_checksum) save the result as CHECKSUM_COMPLETE.
Subsequent checksum verification can use this.
Also, added csum_complete_sw flag to distinguish between software and
hardware generated checksum complete, we should always be able to trust
the software computation.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Wed, 11 Jun 2014 01:54:13 +0000 (18:54 -0700)]
net: Preserve CHECKSUM_COMPLETE at validation
Currently when the first checksum in a packet is validated using
CHECKSUM_COMPLETE, ip_summed is overwritten to be CHECKSUM_UNNECESSARY
so that any subsequent checksums in the packet are not correctly
validated.
This patch adds csum_valid flag in sk_buff and uses that to indicate
validated checksum instead of setting CHECKSUM_UNNECESSARY. The bit
is set accordingly in the skb_checksum_validate_* functions. The flag
is checked in skb_checksum_complete, so that validation is communicated
between checksum_init and checksum_complete sequence in TCP and UDP.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 11 Jun 2014 22:44:42 +0000 (15:44 -0700)]
Merge branch 'qlcnic-next'
Shahed Shaikh says:
====================
This series contains an enhancement in the area of firmware minidump collection
and optimization of ring count validation function.
Please apply this series to net-next.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Shahed Shaikh [Wed, 11 Jun 2014 18:09:13 +0000 (14:09 -0400)]
qlcnic: Update version to 5.3.60
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shahed Shaikh [Wed, 11 Jun 2014 18:09:12 +0000 (14:09 -0400)]
qlcnic: Optimize ring count validations
- Check interrupt mode at the start of qlcnic_set_channels().
- Do not validate ring count if they are not going to change.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Shahed Shaikh [Wed, 11 Jun 2014 18:09:11 +0000 (14:09 -0400)]
qlcnic: Pre-allocate DMA buffer used for minidump collection
Pre-allocate the physically contiguous DMA buffer used for
minidump collection at driver load time, rather than at
run time, to minimize allocation failures. Driver will allocate
the buffer at load time if PEX DMA support capability is indicated
by the adapter.
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Popov [Wed, 11 Jun 2014 11:09:14 +0000 (15:09 +0400)]
ip_vti: fix sparse warnings for VTI_ISVTI
This patch fixes the following sparse warnings:
net/ipv4/ip_tunnel.c:245:53: warning: restricted __be16 degrades to integer
net/ipv4/ip_vti.c:321:19: warning: incorrect type in assignment (different base types)
net/ipv4/ip_vti.c:321:19: expected restricted __be16 [addressable] [assigned] [usertype] i_flags
net/ipv4/ip_vti.c:321:19: got int
net/ipv4/ip_vti.c:447:24: warning: incorrect type in assignment (different base types)
net/ipv4/ip_vti.c:447:24: expected restricted __be16 [usertype] i_flags
net/ipv4/ip_vti.c:447:24: got int
Since VTI_ISVTI is always used with ip_tunnel_parm->i_flags (which is __be16),
we can __force cast VTI_ISVTI to __be16 in header file.
Signed-off-by: Dmitry Popov <ixaphire@qrator.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 11 Jun 2014 08:16:51 +0000 (11:16 +0300)]
drivers: net: davinci_cpdma: double free on error
We recently change the kzalloc() to devm_kzalloc() so freeing "ctlr"
here could lead to a double free.
Fixes: e194312854ed ('drivers: net: davinci_cpdma: Convert kzalloc() to devm_kzalloc().')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Wed, 11 Jun 2014 06:56:26 +0000 (09:56 +0300)]
amd-xgbe: unwind on error in xgbe_mdio_register()
There is a typo here so we return directly instead of unwinding.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Varka Bhadram [Wed, 11 Jun 2014 04:34:44 +0000 (10:04 +0530)]
mrf24j40: add device managed APIs
adds the device managed APIs so that no need worry about
freeing the resources.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
stephen hemminger [Wed, 11 Jun 2014 03:30:13 +0000 (20:30 -0700)]
ceph: remove bogus extern
Sparse complained about this bogus extern on definition of
a function.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Tue, 10 Jun 2014 15:44:07 +0000 (17:44 +0200)]
net: filter: document internal instruction encoding
This patch adds a description of eBPFs instruction encoding in order
to bring the documentation in line with the implementation.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Tue, 10 Jun 2014 15:44:06 +0000 (17:44 +0200)]
net: filter: mention eBPF terminology as well
Since the term eBPF is used anyway on mailing list discussions, lets
also document that in the main BPF documentation file and replace a
couple of occurrences with eBPF terminology to be more clear.
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 10 Jun 2014 13:43:01 +0000 (06:43 -0700)]
ipv4: fix a race in ip4_datagram_release_cb()
Alexey gave a AddressSanitizer[1] report that finally gave a good hint
at where was the origin of various problems already reported by Dormando
in the past [2]
Problem comes from the fact that UDP can have a lockless TX path, and
concurrent threads can manipulate sk_dst_cache, while another thread,
is holding socket lock and calls __sk_dst_set() in
ip4_datagram_release_cb() (this was added in linux-3.8)
It seems that all we need to do is to use sk_dst_check() and
sk_dst_set() so that all the writers hold same spinlock
(sk->sk_dst_lock) to prevent corruptions.
TCP stack do not need this protection, as all sk_dst_cache writers hold
the socket lock.
[1]
https://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel
AddressSanitizer: heap-use-after-free in ipv4_dst_check
Read of size 2 by thread T15453:
[<
ffffffff817daa3a>] ipv4_dst_check+0x1a/0x90 ./net/ipv4/route.c:1116
[<
ffffffff8175b789>] __sk_dst_check+0x89/0xe0 ./net/core/sock.c:531
[<
ffffffff81830a36>] ip4_datagram_release_cb+0x46/0x390 ??:0
[<
ffffffff8175eaea>] release_sock+0x17a/0x230 ./net/core/sock.c:2413
[<
ffffffff81830882>] ip4_datagram_connect+0x462/0x5d0 ??:0
[<
ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<
ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<
ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<
ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
Freed by thread T15455:
[<
ffffffff8178d9b8>] dst_destroy+0xa8/0x160 ./net/core/dst.c:251
[<
ffffffff8178de25>] dst_release+0x45/0x80 ./net/core/dst.c:280
[<
ffffffff818304c1>] ip4_datagram_connect+0xa1/0x5d0 ??:0
[<
ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<
ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<
ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<
ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
Allocated by thread T15453:
[<
ffffffff8178d291>] dst_alloc+0x81/0x2b0 ./net/core/dst.c:171
[<
ffffffff817db3b7>] rt_dst_alloc+0x47/0x50 ./net/ipv4/route.c:1406
[< inlined >] __ip_route_output_key+0x3e8/0xf70
__mkroute_output ./net/ipv4/route.c:1939
[<
ffffffff817dde08>] __ip_route_output_key+0x3e8/0xf70 ./net/ipv4/route.c:2161
[<
ffffffff817deb34>] ip_route_output_flow+0x14/0x30 ./net/ipv4/route.c:2249
[<
ffffffff81830737>] ip4_datagram_connect+0x317/0x5d0 ??:0
[<
ffffffff81846d06>] inet_dgram_connect+0x76/0xd0 ./net/ipv4/af_inet.c:534
[<
ffffffff817580ac>] SYSC_connect+0x15c/0x1c0 ./net/socket.c:1701
[<
ffffffff817596ce>] SyS_connect+0xe/0x10 ./net/socket.c:1682
[<
ffffffff818b0a29>] system_call_fastpath+0x16/0x1b
./arch/x86/kernel/entry_64.S:629
[2]
<4>[196727.311203] general protection fault: 0000 [#1] SMP
<4>[196727.311224] Modules linked in: xt_TEE xt_dscp xt_DSCP macvlan bridge coretemp crc32_pclmul ghash_clmulni_intel gpio_ich microcode ipmi_watchdog ipmi_devintf sb_edac edac_core lpc_ich mfd_core tpm_tis tpm tpm_bios ipmi_si ipmi_msghandler isci igb libsas i2c_algo_bit ixgbe ptp pps_core mdio
<4>[196727.311333] CPU: 17 PID: 0 Comm: swapper/17 Not tainted 3.10.26 #1
<4>[196727.311344] Hardware name: Supermicro X9DRi-LN4+/X9DR3-LN4+/X9DRi-LN4+/X9DR3-LN4+, BIOS 3.0 07/05/2013
<4>[196727.311364] task:
ffff885e6f069700 ti:
ffff885e6f072000 task.ti:
ffff885e6f072000
<4>[196727.311377] RIP: 0010:[<
ffffffff815f8c7f>] [<
ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.311399] RSP: 0018:
ffff885effd23a70 EFLAGS:
00010282
<4>[196727.311409] RAX:
dead000000200200 RBX:
ffff8854c398ecc0 RCX:
0000000000000040
<4>[196727.311423] RDX:
dead000000100100 RSI:
dead000000100100 RDI:
dead000000200200
<4>[196727.311437] RBP:
ffff885effd23a80 R08:
ffffffff815fd9e0 R09:
ffff885d5a590800
<4>[196727.311451] R10:
0000000000000000 R11:
0000000000000000 R12:
0000000000000000
<4>[196727.311464] R13:
ffffffff81c8c280 R14:
0000000000000000 R15:
ffff880e85ee16ce
<4>[196727.311510] FS:
0000000000000000(0000) GS:
ffff885effd20000(0000) knlGS:
0000000000000000
<4>[196727.311554] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
<4>[196727.311581] CR2:
00007a46751eb000 CR3:
0000005e65688000 CR4:
00000000000407e0
<4>[196727.311625] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
<4>[196727.311669] DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000400
<4>[196727.311713] Stack:
<4>[196727.311733]
ffff8854c398ecc0 ffff8854c398ecc0 ffff885effd23ab0 ffffffff815b7f42
<4>[196727.311784]
ffff88be6595bc00 ffff8854c398ecc0 0000000000000000 ffff8854c398ecc0
<4>[196727.311834]
ffff885effd23ad0 ffffffff815b86c6 ffff885d5a590800 ffff8816827821c0
<4>[196727.311885] Call Trace:
<4>[196727.311907] <IRQ>
<4>[196727.311912] [<
ffffffff815b7f42>] dst_destroy+0x32/0xe0
<4>[196727.311959] [<
ffffffff815b86c6>] dst_release+0x56/0x80
<4>[196727.311986] [<
ffffffff81620bd5>] tcp_v4_do_rcv+0x2a5/0x4a0
<4>[196727.312013] [<
ffffffff81622b5a>] tcp_v4_rcv+0x7da/0x820
<4>[196727.312041] [<
ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312070] [<
ffffffff815de02d>] ? nf_hook_slow+0x7d/0x150
<4>[196727.312097] [<
ffffffff815fd9e0>] ? ip_rcv_finish+0x360/0x360
<4>[196727.312125] [<
ffffffff815fda92>] ip_local_deliver_finish+0xb2/0x230
<4>[196727.312154] [<
ffffffff815fdd9a>] ip_local_deliver+0x4a/0x90
<4>[196727.312183] [<
ffffffff815fd799>] ip_rcv_finish+0x119/0x360
<4>[196727.312212] [<
ffffffff815fe00b>] ip_rcv+0x22b/0x340
<4>[196727.312242] [<
ffffffffa0339680>] ? macvlan_broadcast+0x160/0x160 [macvlan]
<4>[196727.312275] [<
ffffffff815b0c62>] __netif_receive_skb_core+0x512/0x640
<4>[196727.312308] [<
ffffffff811427fb>] ? kmem_cache_alloc+0x13b/0x150
<4>[196727.312338] [<
ffffffff815b0db1>] __netif_receive_skb+0x21/0x70
<4>[196727.312368] [<
ffffffff815b0fa1>] netif_receive_skb+0x31/0xa0
<4>[196727.312397] [<
ffffffff815b1ae8>] napi_gro_receive+0xe8/0x140
<4>[196727.312433] [<
ffffffffa00274f1>] ixgbe_poll+0x551/0x11f0 [ixgbe]
<4>[196727.312463] [<
ffffffff815fe00b>] ? ip_rcv+0x22b/0x340
<4>[196727.312491] [<
ffffffff815b1691>] net_rx_action+0x111/0x210
<4>[196727.312521] [<
ffffffff815b0db1>] ? __netif_receive_skb+0x21/0x70
<4>[196727.312552] [<
ffffffff810519d0>] __do_softirq+0xd0/0x270
<4>[196727.312583] [<
ffffffff816cef3c>] call_softirq+0x1c/0x30
<4>[196727.312613] [<
ffffffff81004205>] do_softirq+0x55/0x90
<4>[196727.312640] [<
ffffffff81051c85>] irq_exit+0x55/0x60
<4>[196727.312668] [<
ffffffff816cf5c3>] do_IRQ+0x63/0xe0
<4>[196727.312696] [<
ffffffff816c5aaa>] common_interrupt+0x6a/0x6a
<4>[196727.312722] <EOI>
<1>[196727.313071] RIP [<
ffffffff815f8c7f>] ipv4_dst_destroy+0x4f/0x80
<4>[196727.313100] RSP <
ffff885effd23a70>
<4>[196727.313377] ---[ end trace
64b3f14fae0f2e29 ]---
<0>[196727.380908] Kernel panic - not syncing: Fatal exception in interrupt
Reported-by: Alexey Preobrazhensky <preobr@google.com>
Reported-by: dormando <dormando@rydia.ne>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 8141ed9fcedb2 ("ipv4: Add a socket release callback for datagram sockets")
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 10 Jun 2014 10:31:10 +0000 (12:31 +0200)]
net: filter: add test_bpf module under MAINTAINERS' networking section
Add lib/test_bpf.c entry to maintainers file under networking.
All changes were posted via netdev for review, so make sure
other people Cc it as well when they call get_maintainer.pl.
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Octavian Purdila [Wed, 11 Jun 2014 22:36:26 +0000 (01:36 +0300)]
net: add __pskb_copy_fclone and pskb_copy_for_clone
There are several instances where a pskb_copy or __pskb_copy is
immediately followed by an skb_clone.
Add a couple of new functions to allow the copy skb to be allocated
from the fclone cache and thus speed up subsequent skb_clone calls.
Cc: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Marek Lindner <mareklindner@neomailbox.ch>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Cc: Antonio Quartulli <antonio@meshcoding.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Arvid Brodin <arvid.brodin@alten.se>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Allan Stephens <allan.stephens@windriver.com>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Reviewed-by: Christoph Paasch <christoph.paasch@uclouvain.be>
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Cooper [Wed, 11 Jun 2014 13:33:08 +0000 (14:33 +0100)]
sfc: PIO:Restrict to 64bit arch and use 64-bit writes.
Fixes:
ee45fd92c739
("sfc: Use TX PIO for sufficiently small packets")
The linux net driver uses memcpy_toio() in order to copy into
the PIO buffers.
Even on a 64bit machine this causes 32bit accesses to a write-
combined memory region.
There are hardware limitations that mean that only 64bit
naturally aligned accesses are safe in all cases.
Due to being write-combined memory region two 32bit accesses
may be coalesced to form a 64bit non 64bit aligned access.
Solution was to open-code the memory copy routines using pointers
and to only enable PIO for x86_64 machines.
Not tested on platforms other than x86_64 because this patch
disables the PIO feature on other platforms.
Compile-tested on x86 to ensure that works.
The WARN_ON_ONCE() code in the previous version of this patch
has been moved into the internal sfc debug driver as the
assertion was unnecessary in the upstream kernel code.
This bug fix applies to v3.13 and v3.14 stable branches.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 11 Jun 2014 22:23:03 +0000 (15:23 -0700)]
Merge branch 'bridge-next'
Toshiaki Makita says:
====================
bridge: 802.1ad vlan protocol support
Currently bridge vlan filtering doesn't work fine with 802.1ad protocol.
Only if a bridge is configured without pvid, the bridge receives only
802.1ad tagged frames and no STP is used, it will work.
Otherwise:
- If pvid is configured, it can put only 802.1Q tags but cannot put 802.1ad
tags.
- If 802.1Q and 802.1ad tagged frames arrive in mixture, it applies filtering
regardless of their protocols.
- While an 802.1ad bridge should use another mac address for STP BPDU and
should forward customer's BPDU frames, it can't.
Thus, we can't properly handle frames once 802.1ad is used.
Handling 802.1ad is useful if we want to allow stacked vlans to be used,
e.g., guest VMs wants to use vlan tags and the host also wants to segregate
guest's traffic from other guests' by vlan tags.
Here is the image describing how to configure a bridge to filter VMs traffic.
+-------+p/u +-----+ +---------+
+----+ | |------|vnet0|--|User A VM|
|eth0|--|802.1ad| +-----+ +---------+
+----+ |bridge |p/u +-----+ +---------+
| |------|vnet1|--|User B VM|
+-------+ +-----+ +---------+
p/u: pvid/untagged
This patch set enables us to set vlan protocols per bridge.
This tries to implement a bridge like S-VLAN component in IEEE 802.1Q-2011
spec.
Note that there is another possible implementation that sets vlan protocols
per port. Some HW switches seem to take that approach.
However, I think per-bridge approach is better, because;
- I think the typical usage of an 802.1ad bridge is segregating 802.1Q tagged
traffic (like what is described above), and this doesn't need the ability to
be set protocols per port. Also, If a bridge has many ports and it supports
per-port setting, we might have to make much more extra configurations to
change protocols of all ports.
- I assume that the main perpose to set protocol per port is to assign S-VID
according to C-VID, or to realize two logical bridges (one is an 802.1Q
filtering bridge and the other is an 802.1ad filtering bridge) in one bridge.
The former usually needs additional features such as vlan id mapping, and
is likely to make bridge's code complicated. If a user wants, such enhanced
features can be accomplished by a combination of multiple bridges, so it is
not absolutely necessary to implement these features in a bridge itself.
The latter is simply unnecessary because we can easily make two bridges of
which one is an 802.1Q bridge and the other is an 802.1ad bridge.
Here is an example of the enhanced feature that we can realize by using
multiple bridges and veth interfaces. This way is documented in
IEEE 802.1Q-2011 clause 15.4 (C-tagged service interface).
+----+ +-------+p/u +------+ +----+ +--+
|eth0|--|802.1ad|----veth----|802.1Q|--|vnet|--|VM|
+----+ |bridge |----veth----|bridge| +----+ +--+
+-------+p/u +------+
p/u: pvid/untagged
In this configuration, we can map C-VIDs to any S-VID.
For example;
C-VID 10 and 20 to S-VID 100
C-VID 30 to S-VID 110
This is achieved through the 802.1Q bridge that forwards C-tagged frames to
proper ports of the 802.1ad bridge.
Changes:
v1 -> v2:
- Make the way to forward bridge group addresses more generic by introducing
new mask, group_fwd_mask_required.
RFC -> v1:
- Add S-TAG tx offload.
- Remove a fix around stacked vlan which has already been fixed.
- Take into account Bridge Group Addresses.
- Separate handling of protocol-mismatch from br_vlan_get_tag().
- Change the way to set vlan_proto from netlink to sysfs because no other
existing configuration per bridge can be set by netlink.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Toshiaki Makita [Tue, 10 Jun 2014 11:59:25 +0000 (20:59 +0900)]
bridge: Support 802.1ad vlan filtering
This enables us to change the vlan protocol for vlan filtering.
We come to be able to filter frames on the basis of 802.1ad vlan tags
through a bridge.
This also changes br->group_addr if it has not been set by user.
This is needed for an 802.1ad bridge.
(See IEEE 802.1Q-2011 8.13.5.)
Furthermore, this sets br->group_fwd_mask_required so that an 802.1ad
bridge can forward the Nearest Customer Bridge group addresses except
for br->group_addr, which should be passed to higher layer.
To change the vlan protocol, write a protocol in sysfs:
# echo 0x88a8 > /sys/class/net/br0/bridge/vlan_protocol
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Toshiaki Makita [Tue, 10 Jun 2014 11:59:24 +0000 (20:59 +0900)]
bridge: Prepare for forwarding another bridge group addresses
If a bridge is an 802.1ad bridge, it must forward another bridge group
addresses (the Nearest Customer Bridge group addresses).
(For details, see IEEE 802.1Q-2011 8.6.3.)
As user might not want group_fwd_mask to be modified by enabling 802.1ad,
introduce a new mask, group_fwd_mask_required, which indicates addresses
the bridge wants to forward. This will be set by enabling 802.1ad.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Toshiaki Makita [Tue, 10 Jun 2014 11:59:23 +0000 (20:59 +0900)]
bridge: Prepare for 802.1ad vlan filtering support
This enables a bridge to have vlan protocol informantion and allows vlan
tag manipulation (retrieve, insert and remove tags) according to the vlan
protocol.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Toshiaki Makita [Tue, 10 Jun 2014 11:59:22 +0000 (20:59 +0900)]
bridge: Add 802.1ad tx vlan acceleration
Bridge device doesn't need to embed S-tag into skb->data.
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnd Bergmann [Tue, 10 Jun 2014 08:34:36 +0000 (10:34 +0200)]
net: xen-netback: include linux/vmalloc.h again
commit
e9ce7cb6b107 ("xen-netback: Factor queue-specific data into
queue struct") added a use of vzalloc/vfree to interface.c, but
removed the #include <linux/vmalloc.h> statement at the same time,
which causes this build error:
drivers/net/xen-netback/interface.c: In function 'xenvif_free':
drivers/net/xen-netback/interface.c:754:2: error: implicit declaration of function 'vfree' [-Werror=implicit-function-declaration]
vfree(vif->queues);
^
cc1: some warnings being treated as errors
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Andrew J. Bennieston <andrew.bennieston@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jongsung Kim [Tue, 10 Jun 2014 03:50:12 +0000 (12:50 +0900)]
net: phy: realtek: register/unregister multiple drivers properly
Using phy_drivers_register/_unregister functions is proper way to
handle multiple PHY drivers registration. For Realtek PHY drivers
module, it fixes incomplete current error-handlings up and adds
missed unregistration for the RTL8201CP driver.
Signed-off-by: Jongsung Kim <neidhard.kim@lge.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yoshihiro Shimoda [Tue, 10 Jun 2014 00:40:24 +0000 (09:40 +0900)]
net: sh_eth: Fix timing of RACT setting in sh_eth_rx()
This patch fixes an issue that we cannot use nfs rootfs correctly
on r8a7790 when the command below runs on a host PC.
$ sudo ping -f -l 8 $BOARD_IP_ADDR
Since the driver sets the RACT to 1 in the first while loop of
sh_eth_rx(), the controller accepts a next frame into the next RX
descriptor during the while loop. But, in the first while loop
doesn't allocate a next skb. So, this patch removes the RACT setting
in the first while loop of sh_eth_rx().
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yoshihiro Shimoda [Tue, 10 Jun 2014 00:40:14 +0000 (09:40 +0900)]
net: sh_eth: Fix receive packet "exceeded" condition in sh_eth_rx()
This patch fixes the packet "exceeded" condition in sh_eth_rx() when
RACT in an RX descriptor is not set and the "quota" is 0.
Otherwise, kernel panic happens because the "&n->poll_list" is deleted
twice in sh_eth_poll() which calls napi_complete() and net_rx_action().
Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Wed, 11 Jun 2014 20:16:44 +0000 (13:16 -0700)]
net: filter: fix warning on 32-bit arch
fix compiler warning on 32-bit architectures:
net/core/filter.c: In function '__sk_run_filter':
net/core/filter.c:540:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
net/core/filter.c:550:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
net/core/filter.c:560:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Paul Maloy [Mon, 9 Jun 2014 16:08:18 +0000 (11:08 -0500)]
tipc: fix potential bug in function tipc_backlog_rcv
In commit
4f4482dcd9a0606a30541ff165ddaca64748299b ("tipc: compensate
for double accounting in socket rcv buffer") we access 'truesize' of
a received buffer after it might have been released by the function
filter_rcv().
In this commit we correct this by reading the value of 'truesize' to
the stack before delivering the buffer to filter_rcv().
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Mon, 9 Jun 2014 15:09:01 +0000 (18:09 +0300)]
net: sxgbe: remove duplicate SXGBE_CORE_L34_ADDCTL_REG define
The SXGBE_CORE_L34_ADDCTL_REG define is cut and pasted twice so we can
delete the second instance.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Mon, 9 Jun 2014 14:55:39 +0000 (17:55 +0300)]
qlcnic: remove duplicate QLC_83XX_GET_LSO_CAPABILITY define
The QLC_83XX_GET_LSO_CAPABILITY define is cut and pasted twice so we can
delete the second instance.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 11 Jun 2014 21:59:21 +0000 (14:59 -0700)]
Merge branch 'mlx4'
Amir Vadai says:
====================
cpumask,net: affinity hint helper function
This patchset will set affinity hint to influence IRQs to be allocated on the
same NUMA node as the one where the card resides. As discussed in
http://www.spinics.net/lists/netdev/msg271497.html
If number of IRQs allocated is greater than the number of local NUMA cores, all
local cores will be used first, and the rest of the IRQs will be on a remote
NUMA node.
If no NUMA support - IRQ's and cores will be mapped 1:1
Since the utility function to calculate the mapping could be useful in other mq
drivers in the kernel, it was added to cpumask.[ch]
This patchset was tested and applied on top of net-next since the first
consumer is a network device (mlx4_en). Over commit
fff1f59 "mac802154:
llsec: add forgotten list_del_rcu in key removal"
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Atias [Mon, 9 Jun 2014 07:24:39 +0000 (10:24 +0300)]
net/mlx4_en: Use affinity hint
The “affinity hint” mechanism is used by the user space
daemon, irqbalancer, to indicate a preferred CPU mask for irqs.
Irqbalancer can use this hint to balance the irqs between the
cpus indicated by the mask.
We wish the HCA to preferentially map the IRQs it uses to numa cores
close to it. To accomplish this, we use cpumask_set_cpu_local_first(), that
sets the affinity hint according the following policy:
First it maps IRQs to “close” numa cores. If these are exhausted, the
remaining IRQs are mapped to “far” numa cores.
Signed-off-by: Yuval Atias <yuvala@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Mon, 9 Jun 2014 07:24:38 +0000 (10:24 +0300)]
cpumask: Utility function to set n'th cpu - local cpu first
This function sets the n'th cpu - local cpu's first.
For example: in a 16 cores server with even cpu's local, will get the
following values:
cpumask_set_cpu_local_first(0, numa, cpumask) => cpu 0 is set
cpumask_set_cpu_local_first(1, numa, cpumask) => cpu 2 is set
...
cpumask_set_cpu_local_first(7, numa, cpumask) => cpu 14 is set
cpumask_set_cpu_local_first(8, numa, cpumask) => cpu 1 is set
cpumask_set_cpu_local_first(9, numa, cpumask) => cpu 3 is set
...
cpumask_set_cpu_local_first(15, numa, cpumask) => cpu 15 is set
Curently this function will be used by multi queue networking devices to
calculate the irq affinity mask, such that as many local cpu's as
possible will be utilized to handle the mq device irq's.
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 11 Jun 2014 21:26:21 +0000 (14:26 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui:
"Specifics:
- fix a bug in Exynos thermal driver, which overwrites the hardware
trip point threshold when updating software trigger levels and
results in emergency shutdown. From: Tushar Behera.
- add thermal sensor support for Armada 375 and 38x SoCs. From
Ezequiel Garcia.
- add TMU (Thermal Management Unit) support for Exynos5260 and
Exynos5420 SoCs. From Naveen Krishna Chatradhi.
- add support for the additional digital temperature sensors in the
Intel SoCs like Bay Trail. From: Srinivas Pandruvada.
- a couple of cleanups and small fixes from Jingoo Han, Bartlomiej
Zolnierkiewicz, Geert Uytterhoeven, Jacob Pan, Paul Walmsley and
Lan,Tianyu"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (21 commits)
thermal: spear: remove unnecessary OOM messages
thermal: exynos: remove unnecessary OOM messages
thermal: rcar: remove unnecessary OOM messages
thermal: armada: Support Armada 380 SoC
thermal: armada: Support Armada 375 SoC
thermal: armada: Allow to specify an 'inverted readout' sensor
thermal: armada: Pass the platform_device to init_sensor()
thermal: armada: Add generic infrastructure to handle the sensor
thermal: armada: Add infrastructure to support generic formulas
thermal: armada: Rename armada_thermal_ops struct
thermal/intel_powerclamp: add newer cpu ids
thermal: rcar: Use pm_runtime_put() i.s.o. pm_runtime_put_sync()
thermal: samsung: Only update available threshold limits
Thermal/int3403: Fix thermal hysteresis unit conversion
thermal: Intel SoC DTS thermal
thermal: samsung: Add TMU support for Exynos5260 SoCs
thermal: samsung: Add TMU support for Exynos5420 SoCs
thermal: samsung: change base_common to more meaningful base_second
thermal: samsung: replace inten_ bit fields with intclr_
thermal: offer Samsung thermal support only when ARCH_EXYNOS is defined
...
Linus Torvalds [Wed, 11 Jun 2014 21:06:55 +0000 (14:06 -0700)]
Merge tag 'pwm/for-3.16-rc1' of git://git./linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The majority of these changes are cleanups and fixes across all
drivers. Redundant error messages are removed and more PWM
controllers set the .can_sleep flag to signal that they can't be used
in atomic context.
Support is added for the Broadcom Kona family of SoCs and the Intel
LPSS driver can now probe PCI devices in addition to ACPI devices.
Upon shutdown, the pwm-backlight driver will now power off the
backlight. It also uses the new descriptor-based GPIO API for more
concise GPIO handling.
A large chunk of these changes also converts platforms to use the
lookup mechanism rather than relying on the global number space to
reference PWM devices. This is largely in preparation for more
unification and cleanups in future patches. Eventually it will allow
the legacy PWM API to be removed"
* tag 'pwm/for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (38 commits)
pwm: fsl-ftm: set pwm_chip can_sleep flag
pwm: ab8500: Fix wrong value shift for disable/enable PWM
pwm: samsung: do not set manual update bit in pwm_samsung_config
pwm: lp3943: Set pwm_chip can_sleep flag
pwm: atmel: set pwm_chip can_sleep flag
pwm: mxs: set pwm_chip can_sleep flag
pwm: tiehrpwm: inline accessor functions
pwm: tiehrpwm: don't build PM related functions when not needed
pwm-backlight: retrieve configured PWM period
leds: leds-pwm: retrieve configured PWM period
ARM: pxa: hx4700: use PWM_LOOKUP to initialize struct pwm_lookup
ARM: shmobile: armadillo: use PWM_LOOKUP to initialize struct pwm_lookup
ARM: OMAP3: Beagle: use PWM_LOOKUP to initialize struct pwm_lookup
pwm: modify PWM_LOOKUP to initialize all struct pwm_lookup members
ARM: pxa: hx4700: initialize all the struct pwm_lookup members
ARM: OMAP3: Beagle: initialize all the struct pwm_lookup members
pwm: renesas-tpu: remove unused struct tpu_pwm_platform_data
ARM: shmobile: armadillo: initialize all struct pwm_lookup members
pwm: add period and polarity to struct pwm_lookup
pwm: twl: Really disable twl6030 PWMs
...
Lukas Czerner [Wed, 11 Jun 2014 16:28:43 +0000 (12:28 -0400)]
dm thin: update discard_granularity to reflect the thin-pool blocksize
DM thinp already checks whether the discard_granularity of the data
device is a factor of the thin-pool block size. But when using the
dm-thin-pool's discard passdown support, DM thinp was not selecting the
max of the underlying data device's discard_granularity and the
thin-pool's block size.
Update set_discard_limits() to set discard_granularity to the max of
these values. This enables blkdev_issue_discard() to properly align the
discards that are sent to the DM thin device on a full block boundary.
As such each discard will now cover an entire DM thin-pool block and the
block will be reclaimed.
Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Heinz Mauelshagen [Thu, 5 Jun 2014 14:23:09 +0000 (15:23 +0100)]
dm bio prison: implement per bucket locking in the dm_bio_prison hash table
Split the single per bio-prison lock by using per bucket locking. Per
bucket locking benefits both dm-thin and dm-cache targets by reducing
bio-prison lock contention.
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
projects / openwrt / staging / blogic.git / log