Commit Graph

94 Commits (d1a8217d87bffa33fd7d4562b3ed2f797c14beaf)

Author SHA1 Message Date
Daniel Golle d1a8217d87 kernel: clean-up build-configurable kernel config symbols
Don't explicitely disable options in target/linux/generic/config-* if
they are already controlled in config/Config-kernel.in.
Add a bunch of new symbols  and prepare defaults for using only unified
hierarchy (ie. cgroup2). Update symbol dependencies while at it

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
4 years ago
Pawel Dembicki e53ec043ba kirkwood: move usb support to modules
USB support built in kernel isn't required for booting.
This patch move USB support to modules.

CONFIG_USB_STORAGE is removed because it can be found in kmod-usb-storage
and all usb support for this targed is moved to kmods.

Tested-by: Cezary Jackiewicz <cezary@eko.one.pl> [nsa310]
Tested-by: Alberto Bursi <bobafetthotmail@gmail.com> [nsa325, ea4500]
Reviewed-by: Sungbo Eo <mans0n@gorani.run>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
[keep CONFIG_SCSI]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
4 years ago
Pawel Dembicki 73c3ba23a4 kirkwood: move sata features to modules
All devices are using nand images. Built-in SATA modules are not needed
anymore.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
[only move CONFIG_SATA_MV]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-by: Pawel Dembicki <paweldembicki@gmail.com> [pogo v4]
4 years ago
Thomas Albers e23859765c linux/generic: remove obsolete config option LEDS_TRIGGER_IDE_DISK
Kernel config option LEDS_TRIGGER_IDE_DISK was renamed in kernel 4.8 to
CONFIG_LEDS_TRIGGER_DISK in upstream commit eb25cb9956cc ("leds: convert
IDE trigger to common disk trigger").

Removing it as it should be added only on targets which has usage for
this trigger.

Signed-off-by: Thomas Albers <thomas.gameiro@googlemail.com>
[commit description facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
4 years ago
Álvaro Fernández Rojas cca13d8e82 kernel: mtdsplit: add BCM WFI support
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
4 years ago
Thibaut VARÈNE 1dcc2249cd generic: mikrotik platform build bits
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
4 years ago
Thibaut VARÈNE 2976e423dc generic: routerboot partition build bits
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
4 years ago
Aleksander Jan Bajkowski b43023b7ba kernel: remove non-existant symbols
These symbols exist only in older kernels and can be removed.

Signed-off-by: Aleksander Jan Bajkowski <A.Bajkowski@stud.elka.pw.edu.pl>
4 years ago
Hauke Mehrtens 27358ec8fd kernel: Sort generic configuration
This was done by executing these commands:

$ ./scripts/kconfig.pl '+' target/linux/generic/config-4.19 /dev/null > target/linux/generic/config-4.19-new
$ mv target/linux/generic/config-4.14-new target/linux/generic/config-4.14

$ ./scripts/kconfig.pl '+' target/linux/generic/config-4.14 /dev/null > target/linux/generic/config-4.14-new
$ mv target/linux/generic/config-4.19-new target/linux/generic/config-4.19

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
4 years ago
Hauke Mehrtens b951f53fba build: Add additional kernel debug options
Make it possible to activate some additional kernel debug options.
This can be used to debug some problems in kernel drivers.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
4 years ago
Hauke Mehrtens 431594a978 build: Add option KERNEL_KASAN
The kernel kernel address sanitizer is able to detect some memory
bugs in the kernel like out of range array accesses.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
4 years ago
Hauke Mehrtens d9b043c03c build: Add option KERNEL_UBSAN
The kernel Undefined Behavior Sanitizer is able to detect some memory
bugs in the kernel like out of range array accesses.

Signed-off-by: Hauke Mehrtens <hauke.mehrtens@intel.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
4 years ago
David Bauer ba8faa0fea generic: update config-4.14
Builds for kenrel 4.14 targetswere failing because of
missing symbols for the B53 swconfig driver.

Fixes: 313bde53ce ("generic: update config-4.19")
Signed-off-by: David Bauer <mail@david-bauer.net>
4 years ago
Hauke Mehrtens 103e49f62e kernel: Add missing configuration option
This was found by the build bot.

Fixes: e29500eb84 ("kernel: bump 4.19 to 4.19.85")
Fixes: db9e9e8382 ("kernel: bump 4.14 to 4.14.155")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Koen Vandeputte d6aea46a50 kernel: bump 4.14 to 4.14.154
Refreshed all patches.

Altered patches:
- 902-debloat_proc.patch
- 040-dmaengine-qcom-bam-Process-multiple-pending-descript.patch
- 807-usb-support-layerscape.patch
- 809-flexcan-support-layerscape.patch
- 816-pcie-support-layerscape.patch

Remove upstreamed:
- 150-MIPS-bmips-mark-exception-vectors-as-char-arrays.patch
- 303-spi-nor-enable-4B-opcodes-for-mx66l51235l.patch

New symbols:
X86_INTEL_MPX
X86_INTEL_MEMORY_PROTECTION_KEYS
X86_INTEL_TSX_MODE_OFF
X86_INTEL_TSX_MODE_ON
X86_INTEL_TSX_MODE_AUTO
SGL_ALLOC

Compile-tested on: cns3xxx, x86_64
Runtime-tested on: cns3xxx

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
5 years ago
Felix Fietkau c3a78955f3 kernel: move crypto-arc4 into a module
It is no longer required by wireless drivers, so we can save some space here

Signed-off-by: Felix Fietkau <nbd@nbd.name>
5 years ago
Tomasz Maciej Nowak d6b585eb4e kernel: drop mvebu support in kmod-usb3
This is already enabled as kernel built-in feature in mvebu target and
none other target will use it.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
5 years ago
Petko Bordjukov 1e2e5c66ed kernel: package Broadcom BNX2X driver
bnx2x driver support for the x86 architecture. Includes module and
firmware for Broadcom QLogic 5771x/578xx 10/20-Gigabit ethernet
adapters.

Signed-off-by: Petko Bordjukov <bordjukov@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[added +kmod-lib-zlib-inflate as well]
5 years ago
Hauke Mehrtens 6dac1c0a9b kernel: Activate CONFIG_OPTIMIZE_INLINING
This will reduce the size of the kernel if CONFIG_CC_OPTIMIZE_FOR_SIZE is
set like for all targets with small_flash feature flag.
I haven't seen any changes for an ARM64 target which optimizes the
kernel for speed instead.

On the ath79/tiny target the uncompressed kernel size was reduced by
3.2% and the compressed kernel size by 2.1%

kernel size with CONFIG_OPTIMIZE_INLINING=n
4346412 build_dir/target-mips_24kc_musl/linux-ath79_tiny/vmlinux
1391169 build_dir/target-mips_24kc_musl/linux-ath79_tiny/tplink_tl-wr941-v4-kernel.bin

Kernel size with CONFIG_OPTIMIZE_INLINING=y
4212396 build_dir/target-mips_24kc_musl/linux-ath79_tiny/vmlinux
1362051 build_dir/target-mips_24kc_musl/linux-ath79_tiny/tplink_tl-wr941-v4-kernel.bin

This change is currently pending for kernel 5.2 and already in
linux-next, this updates our patch to match the upstream version.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Koen Vandeputte a7e68927d0 kernel: bump 4.14 to 4.14.125 (FS#2305 FS#2297)
Refreshed all patches.

This bump contains upstream commits which seem to avoid (not properly fix)
the errors as seen in FS#2305 and FS#2297

Altered patches:
- 403-net-mvneta-convert-to-phylink.patch
- 410-sfp-hack-allow-marvell-10G-phy-support-to-use-SFP.patch

Compile-tested on: ar71xx, cns3xxx, imx6, mvebu, x86_64
Runtime-tested on: ar71xx, cns3xxx, imx6, x86_64

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
5 years ago
Yangbo Lu 65adf759b5 kernel: handle CFQ_GROUP_IOSCHED/CGROUP_HUGETLB in config-4.14
The generic config-4.14 should handle below configs.
- CONFIG_CFQ_GROUP_IOSCHED
- CONFIG_CGROUP_HUGETLB

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
5 years ago
Hauke Mehrtens ed224b1880 at91: Update kernel to version 4.14
This adds support for kernel 4.14 to the target and directly make it the
default kernel version to use.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Tested-by: Sandeep Sheriker <sandeepsheriker.mallikarjun@microchip.com>
5 years ago
Hauke Mehrtens 655fff1571 kernel: Fix build of omap target
CONFIG_HW_RANDOM_OMAP is not set to any value after kmod-random-omap was
removed, add the configuration option to the generic configuration.

Fixes: cd3b298533 ("omap24xx: Remove unmaintained target")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 747587ec61 kernel: Reorder generic configuration
This was done like this:
./scripts/kconfig.pl '+' target/linux/generic/config-4.14 /dev/null > target/linux/generic/config-4.14-new
mv target/linux/generic/config-4.14-new target/linux/generic/config-4.14

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 46af22de16 kernel: Remove CONFIG_COMPAT
This removes support for executing old 32 bit applications on 64 bit ARM
and MIPS kernels.
On OpenWrt we normally compile all the user space applications on our
own and do not support third party binary only modules especial not 32
bit applications on 64 bit CPUs.

This reduces the attack surface on such systems and should also save
some memory.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 7099bf0926 kernel: Remove CONFIG_DEBUG_RODATA and CONFIG_DEBUG_SET_MODULE_RONX
These were renamed to CONFIG_STRICT_KERNEL_RWX and CONFIG_STRICT_MODULE_RWX and are
activated in kernel 4.14 and later by default.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 32eb66881c kernel: Activate CONFIG_ARM64_SW_TTBR0_PAN
This activates "Emulate Privileged Access Never using TTBR0_EL1
switching" on ARM64.

This should prevent the kernel from reading code from user space in
kernel context.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Hauke Mehrtens 9b1239451d Kernel: Activate CONFIG_HARDENED_USERCOPY
This adds additional checks to the copy_from_user() and copy_to_user()
functions. The details are described in this article:
https://lwn.net/Articles/695991/

This should only have a very small performance impact on system calls
and should not affect routing performance.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Petr Štetiar 51216b4f83 kernel: Rename UPROBE_EVENT to UPROBE_EVENTS
Upstream has renamed UPROBE_EVENT to UPROBE_EVENTS in the following
commit:

 commit 6b0b7551428e4caae1e2c023a529465a9a9ae2d4
 Author: Anton Blanchard <anton@samba.org>
 Date:   Thu Feb 16 17:00:50 2017 +1100

     perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS

     We have uses of CONFIG_UPROBE_EVENT and CONFIG_KPROBE_EVENT as
     well as CONFIG_UPROBE_EVENTS and CONFIG_KPROBE_EVENTS.

     Consistently use the plurals.

So I'm changing it to this plural option in order to make kconfig happy
and stop asking about it if kernel is compiled with verbose logging:

 Enable uprobes-based dynamic events (UPROBE_EVENTS) [Y/n/?] (NEW)

Signed-off-by: Petr Štetiar <ynezz@true.cz>
5 years ago
Koen Vandeputte da5bd73d70 kernel: bump 4.14 to 4.14.112
Refreshed all patches.

New symbol:
- CONFIG_LDISC_AUTOLOAD

Compile-tested on: ar71xx, cns3xxx, imx6, x86_64
Runtime-tested on: ar71xx, cns3xxx, imx6

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
5 years ago
Lucian Cristian 16b381179f kernel: add missing drm symbol
dependency introduced with module drm-kms-helper

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>
5 years ago
Tomasz Maciej Nowak 42f96ed941 tegra: add new target
New target introduces initial support for NVIDIA Tegra SoC based devices.
It focuses on Tegra 2 CPUs, for successors supporting NEON instruction
set the target should be split in two subtargets.
This initial commit doesn't create any device image, it's groundwork
for further additions.

Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
5 years ago
Christian Lamparter 4c70ac7be4 x86: fix geode image builds redux
This patch adds more disabled DRM config symbols from the
x86' config to the generic target configs. The existing
symbols in the x86' configs are kept for now, until we
know whenever we want to remove such symbols or not
(see Github PR #1831, #1825, #1828).

THis patch also contains a squashed patch from
Daniel Engberg <daniel.engberg.lists@pyret.net> titled
"kernel: Fix config for 4.14" which fixes a duplicated line
added by: commit 8bdc241d01 ("x86: fix geode image builds")

Fixes: 8bdc241d01 ("x86: fix geode image builds")
Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
5 years ago
Christian Lamparter ca769e081f kernel: disable touchscreen symbols
This patch removes the obsolete touchscreen config symbols
and all disables all remaining ones in the generic config.

Generated by running drivers/input/touchscreen/Kconfig

 sed -n 's/^config[[:space:]]\(.*\)/# CONFIG_\1 is not set/p' Kconfig |\
 sort -d
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
5 years ago
Christian Lamparter 8bdc241d01 x86: fix geode image builds
This patch adds the disabled DRM_RADEON and DRM_AMDGPU
config symbols from the x86' config to the generic target
configs. The existing symbols in the x86' configs are kept
for now, until we know whenever we want to remove such
symbols or not (see Github PR #1831, #1825, #1828).

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
5 years ago
Stijn Tintel ffc65a80d1 kernel: add missing config symbols
The addition of kmod-input-touchscreen-ads7846 enabled
INPUT_TOUCHSCREEN, which exposes several other symbols on various
targets. Add those symbols to the generic kernel configs to fix build.

Fixes: 77a54bbf13 ("kernel: add kmod-input-touchscreen-ads7846")
Reported-by: Hannu Nyman <hannu.nyman@iki.fi>
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
5 years ago
Stijn Tintel 9f4a7de48a kernel: add kmod-fb-tft
This module adds support for small TFT LCD display modules. While this
module also exists in the 4.9 kernel, we are not going to support this
kernel in the next major release, so don't make it available for 4.9.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
5 years ago
Pawel Dembicki 02644e5612 generic: kernel: Add missing config option
DRM packages break modules compilation for sunxi target,
cortexa7 and cortexa8 subtargets.

This patch add missing symbol to generic config.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
5 years ago
Yangbo Lu 5d11672d07 kernel: disable CONFIG_USB_IMX21_HCD in default for kernel 4.14
CONFIG_USB_IMX21_HCD should be handled in generic config and
module package. So moved it into generic config.
This also fixed build issue (kernel config question) of layerscape
armv8_32b since it also used ARCH_MXC.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
[Deactivate CONFIG_USB_IMX21_HCD also for kernel 4.19]
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Tony Ambardar a7370b5179 kernel: enable CONFIG_BPF_JIT by default
Enable the built-in BPF JIT compiler for all 4.9, 4.14 and 4.19 kernels,
which should speed up cBPF and eBPF-based packet filtering (tc, iptables)
and packet sniffing (libpcap, tcpdump, fwknopd, etc).

This has minimal kernel size impact, increasing the size of uImage-lzma
(normally ~2 MB on mips_24kc or mips64el_mips64) by 5 KB for the MIPS32
arch cBPF JIT and by 9 KB for the MIPS64 arch eBPF JIT, on kernel 4.14.

With JIT enabled (cBPF only), the standard BPF test module (test_bpf.ko)
running on a DIR-835 (mips_24kc) used 33 CPU seconds, but 68 without JIT.

This change aligns with the notion of OpenWRT as the network go-to swiss
army knife for packet handling, especially on CPU-constrained platforms.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
5 years ago
Hauke Mehrtens a5269ffa7a kernel: Add missing config option for kernel 4.14
Kernel 4.14.96 got the new configuration option
CIFS_ALLOW_INSECURE_LEGACY which allows to deactivate support for old
and insecure SMB versions like 1.0 and 2.0. Still allow these old SMB
version and fix build problems which occurred because this option was
not defined.

This was found by build bot.

Fixes: 3662157d8b ("kernel: bump 4.14 to 4.14.96")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Pawel Dembicki ed2839ac41 kernel/modules: add kmod-pmbus-zl6100 module
This patch adds the kmod packaging for the Intersil / Zilker Labs
ZL6100 and compatible digital DC-DC controllers as well as the
core kernel module for the Power Management Bus.

Add:
kmod-pmbus-core
kmod-pmbus-zl6100

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
5 years ago
Hauke Mehrtens f6e0ecdceb x86: Refresh kernel 4.14 configuration
This refreshes the kernel configuration for kernel 4.14.
First this was run for the legacy target:
	make kernel_oldconfig
Then for all targets including the legacy target this was run:
	make kernel_oldconfig CONFIG_TARGET=subtarget
The option CONFIG_104_QUAD_8 was added to the generic configuration
because it would have been automatically removed.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Stijn Tintel f5919b65d4 brcm2708: add kernel 4.14 support
Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89

Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""

Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
  MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch

Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.

Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
5 years ago
Brett Mastbergen 2b6eab507a netfilter: Add fib support for nftables
Signed-off-by: Brett Mastbergen <bmastbergen@untangle.com>
5 years ago
Hauke Mehrtens 42e62a8a10 kernel: Reorder configuration
This reorders the generic kernel configuration files.
This was done with the following commands:
$ ./scripts/kconfig.pl '+' target/linux/generic/config-4.14 /dev/null > target/linux/generic/config-4.14-new
$ mv target/linux/generic/config-4.14-new target/linux/generic/config-4.14
$ ./scripts/kconfig.pl '+' target/linux/generic/config-4.9 /dev/null > target/linux/generic/config-4.9-new
$ mv target/linux/generic/config-4.9-new target/linux/generic/config-4.9

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
5 years ago
Stijn Tintel 93a14b8f2a kernel: add missing symbol
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
5 years ago
Daniel Golle 51c094e703 kernel: enable CONFIG_BRIDGE_VLAN_FILTERING
This allows us to use the bridge as a managed switch and gracefully
handle mixed tagged and untagged frames. Prior to this, the only
alternative was creating one bridge per vlan which quickly becomes a
nightmare and still won't let you mix both tagged and untagged frames on
the physical port without some complex ebtables magic.

This is in line with the notion that OpenWRT is the network go-to swiss
army knife when you need a nice set-and-forget, low maintenance box to
handle a specific task.

Current builds of the ip-bridge package already fully support this
feature so the only requirement is enabling the kernel config.

This is disabled by default so existing bridge configurations will not
be affected.  This patch only gives the ability to turn it on with an
'ip link' command.  If there is interest, I could look into making the
feature accessible via uci configuration.

It causes about 3.1% hit on raw bridging speed, which is relatively
trivial considering that I had to use 300 byte packets to strain the CPU
enough to notice a slowdown at all.  The ER8 would chug along at wire
speed otherwise, and that's using only one core.  Since the typical
bridge use case on OpenWRT is wireless, I doubt it would be noticeable
at all.

With BRIDGE_VLAN_FILTERING

iperf -u -c 192.168.1.105 -b 1G -l 300
------------------------------------------------------------
Client connecting to 192.168.1.105, UDP port 5001
Sending 300 byte datagrams, IPG target: 2.24 us (kalman adjust)
UDP buffer size:  208 KByte (default)
------------------------------------------------------------
[  3] local 192.168.1.12 port 58045 connected with 192.168.1.105 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   977 MBytes   820 Mbits/sec
[  3] Sent 3414986 datagrams
[  3] Server Report:
[  3]  0.0-10.0 sec   811 MBytes   680 Mbits/sec   0.000 ms
581210/3414986 (0%)

Without BRIDGE_VLAN_FILTERING

iperf -u -c 192.168.1.105 -b 1G -l 300
------------------------------------------------------------
Client connecting to 192.168.1.105, UDP port 5001
Sending 300 byte datagrams, IPG target: 2.24 us (kalman adjust)
UDP buffer size:  208 KByte (default)
------------------------------------------------------------
[  3] local 192.168.1.12 port 36645 connected with 192.168.1.105 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   977 MBytes   820 Mbits/sec
[  3] Sent 3414990 datagrams
[  3] Server Report:
[  3]  0.0-10.0 sec   836 MBytes   701 Mbits/sec   0.000 ms
493950/3414990 (0%)

In terms of kernel size, it uses 16KB (6753K vs 6737K on ER8) so a
0.002% hit.  The exact 16KB is probably just due to how the kernel is
compressed.

Suggested-by: Jonathan Thibault <jonathan@navigue.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
6 years ago
Felix Fietkau e34ea1b4ff kernel: add CONFIG_CC_OPTIMIZE_FOR_* to the default config
Avoid repeating them in the target config, they are overwritten by
top-level menuconfig anyway

Signed-off-by: Felix Fietkau <nbd@nbd.name>
6 years ago
Felix Fietkau 212aa33226 kernel: enable memory compaction
Compaction is the only memory management component to form high order (larger
physically contiguous) memory blocks reliably. The page allocator relies on
compaction heavily and the lack of the feature can lead to unexpected OOM
killer invocations for high order memory requests. You shouldn't disable this
option unless there really is a strong reason for it.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Michal Hrusecky <michal.hrusecky@nic.cz>
6 years ago