Commit Graph

264 Commits

Author SHA1 Message Date
Andre Heider
9ea7019ffd
build: add a config knob to enable LTO for all packages
This enables LTO for all packages which haven't opted-out.

Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-03-21 18:28:24 +01:00
Andre Heider
aef8bab9d7
build: add a config knob to enable gc-sections for all packages
This enables the linker's garbage collection for all packages which haven't
opted-out.

Signed-off-by: Andre Heider <a.heider@gmail.com>
2023-03-21 18:28:23 +01:00
Hauke Mehrtens
b844716158 kernel: Add CONFIG_KERNEL_HARDLOCKUP_DETECTOR
Make it possible to change the kernel configuration option
CONFIG_HARDLOCKUP_DETECTOR from OpenWrt.

Signed-off-by: Hauke Mehrtens <hmehrtens@maxlinear.com>
2023-03-19 18:44:46 +01:00
Stijn Tintel
4448b27930 kernel: set default for KERNEL_BPF_KPROBE_OVERRIDE
Without the default value this still causes a missing symbol. Disable by
default as it depends on FUNCTION_ERROR_INJECTION, which is disabled in
the generic config and we don't have a build symbol to enable that.

Fixes: 500c37c56f ("kernel: add missing symbol")
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2023-03-05 18:36:01 +02:00
Prasun Maiti
522a60cd31 build: fix for sourcing targets image config installed via feeds
Sourcing of image/Config.in will not happen
When a target is installed from target/linux/feeds/

Signed-off-by: Prasun Maiti <prasunmaiti87@gmail.com>
Acked-by: Petr Štetiar <ynezz@true.cz>
2023-02-26 22:22:48 +01:00
Robert Marko
721206a1b1 kernel: set default values for ARM low level debugging symbols
Set default values for KERNEL_DEBUG_LL and KERNEL_DEBUG_LL_UART_NONE again
as both of these symbols are non visible if KERNEL_EARLY_PRINTK is not
selected and KConfig wont write their value to .config.

This usually is the intended behaviour, but in OpenWrt we are relying on
the KConfig to set these and disable the debug console settings that
multiple targets like mvebu have set in their kernel config.
This was the behaviour before removing all of the "default n" settings
as KConfig by default considers symbols disabled but they are not visible
anymore and thus their value is not set in .config and build system then
later does not override the values from target kernel config.

So, to restore the behaviour to the previous one lets a default value for
KERNEL_DEBUG_LL and KERNEL_DEBUG_LL_UART_NONE.

Fixes: 8bc72ea7be ("treewide: strip useless default n Kconfig lines")
Tested-by: Georgi Valkov <gvalkov@gmail.com>
Signed-off-by: Robert Marko <robimarko@gmail.com>
2023-02-08 16:21:05 +01:00
Tony Butler
8bc72ea7be treewide: strip useless default n Kconfig lines
Kconfig docs say:
> The default value deliberately defaults to 'n' in order to avoid
> bloating the build.

Apply this rule everywhere, to avoid more cloning of bad examples

Signed-off-by: Tony Butler <spudz76@gmail.com>
2023-02-03 12:50:15 +01:00
Felix Fietkau
d02d455678 kernel: make it possible for packages to select page pool support
Will be used by the next mt76 update

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-01-29 10:08:21 +01:00
Tony Butler
4a444e576f build: fix incomplete initramfs compression options
Requires: tools/lz4, tools/lzop

complete the wiring so that these options work:
* `CONFIG_KERNEL_INITRAMFS_COMPRESSION_LZO`
* `CONFIG_KERNEL_INITRAMFS_COMPRESSION_LZ4`

Signed-off-by: Tony Butler <spudz76@gmail.com>
[remove blocking dependencies for separate ramdisk, fix lzop options]
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2023-01-17 00:16:35 +00:00
Robert Marko
b5f32064ed ipq807x: add Qualcomm Atheros IPQ807x target
Qualcomm Atheros IPQ807x is a modern WiSoC featuring:
* Quad Core ARMv8 Cortex A-53
	* @ 2.2 GHz (IPQ8072A/4A/6A/8A) Codename Hawkeye
	* @ 1.4 GHz (IPQ8070A/1A) Codename Acorn
* Dual Band simultaneaous IEEE 802.11ax
	* 5G: 8x8/80 or 4x4/160MHz (IPQ8074A/8A)
	* 5G: 4x4/80 or 2x2/160MHz (IPQ8071A/2A/6A)
	* 5G: 2x2/80MHz (IPQ8070A)
	* 2G: 4x4/40MHz (IPQ8072A/4A/6A/8A)
	* 2G: 2x2/40MHz (IPQ8070A/1A)
* 1x PSGMII via QCA8072/5 (Max 5x 1GbE ports)
* 2x SGMII/USXGMII (1/2.5/5/10 GbE) on Hawkeye
* 2x SGMII/USXGMII (1/2.5/5 GbE) on Acorn
* DDR3L/4 32/16 bit up to 2400MT/s
* SDIO 3.0/SD card 3.0/eMMC 5.1
* Dual USB 3.0
* One PCIe Gen2.1 and one PCIe Gen3.0 port (Single lane)
* Parallel NAND (ONFI)/LCD
* 6x QUP BLSP SPI/I2C/UART
* I2S, PCM, and TDMA
* HW PWM
* 1.8V configurable GPIO
* Companion PMP8074 PMIC via SPMI (GPIOS, RTC etc)

Note that only v2 SOC models aka the ones ending with A suffix are
supported, v1 models do not comply to the final 802.11ax and have
lower clocks, lack the Gen3 PCIe etc.

SoC itself has two UBI32 cores for the NSS offloading system, however
currently no offloading is supported.

Signed-off-by: Robert Marko <robimarko@gmail.com>
2023-01-16 12:42:23 +01:00
Tony Butler
6cee46def0 build: images: squashfs: add help, fix description
add help text for `TARGET_SQUASHFS_BLOCK_SIZE` to match the only valid
settings accepted by `mksquashfs4` ("block size not power of two or not
between 4096 and 1Mbyte") thus for this setting in "KB", the set:
  `4, 8, 16, 32, 64, 128, 256, 512, 1024`

replace `squashfs-lzma` with `squashfs` in the description for
`TARGET_ROOTFS_SQUASHFS` because it has various compressions, and not
just lzma as it did in the past

cosmetic change with no functional effect

Signed-off-by: Tony Butler <spudz76@gmail.com>
2022-12-06 23:12:14 +01:00
Tony Butler
7e83cdf3f7 build: config: cleanup impossible dependency logic
some config `depends on` lines contained outdated kernel version checks
that can no longer happen and had become non-operational; clean them up

cosmetic change with no functional effect

Signed-off-by: Tony Butler <spudz76@gmail.com>
2022-12-03 20:45:55 +01:00
Christian Marangi
901366ad66
Revert "build: fix for sourcing target image config a when target is being replaced"
This reverts commit ce1346a8fc.

Seems to cause buildbot compilation to fail and require more testing.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2022-11-09 22:28:53 +01:00
Prasun Maiti
ce1346a8fc build: fix for sourcing target image config a when target is being replaced
Sourcing of image/Config.in will not happen
When a target is installed from target/linux/feeds/

Signed-off-by: Prasun Maiti <prasunmaiti87@gmail.com>
2022-11-09 20:47:43 +01:00
Christian Marangi
f17608ddca
scripts/download.pl: make the download tool configurable
Introduce a new option in the "Advanced configuration options" to
configure a custom download tool.

By declaring a string in "Use custom download tool" an user can force
what command to use to download package. With the string empty the
default tool used is curl, with wget as a fallback if not available.

download.pl supports 3 tools officially aria2c, curl and wget.
If one of the tool is used in this config, download.pl will use the
default args to make use of them.

If the provided string is different than aria2c, curl or wget, the command
is used as is and the download url will be appended at the end of such command.

While at it also tweak the tool selection logic and chose the tool only
once when the script is called and move aria2c specific variables in the
relevant section.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2022-10-20 00:35:19 +02:00
Christian Marangi
ebabdff401
tools: add option BUILD_ALL_HOST_TOOLS to compile all host tools
Add option to compile all host tools even if not needed.
This can be useful to prepare a universal precompiled host tools
archive to use in another buildroot and speedup compilation.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2022-09-30 22:26:54 +02:00
Felix Fietkau
6eeb5d4564 kernel: disable wireless extensions only when needed
They are only needed by a few very old drivers

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2022-09-22 15:26:58 +02:00
Hauke Mehrtens
9403810c02 toolchain: Select USE_SSTRIP with external musl toolchain
When we use the internal toolchain USE_SSTRIP will be selected by
default for musl libc and USE_STRIP when glibc is used. Do the same when
an external toolchain is used. USE_GLIBC will also be set for external
toolchain builds based on the EXTERNAL_TOOLCHAIN_LIBC_USE_GLIBC setting.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2022-09-12 23:16:22 +02:00
Josh Roys
90c6e3aedf
scripts: always check certificates
Remove flags from wget and curl instructing them to ignore bad server
certificates. Although other mechanisms can protect against malicious
modifications of downloads, other vectors of attack may be available
to an adversary.

TLS certificate verification can be disabled by turning oof the
"Enable TLS certificate verification during package download" option
enabled by default in the "Global build settings" in "make menuconfig"

Signed-off-by: Josh Roys <roysjosh@gmail.com>
[ add additional info on how to disable this option ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
2022-09-10 15:24:22 +02:00
Thibaut VARÈNE
832e7b8172 build: always set CONFIG_IPV6
Disabling this build tunable breaks build and seems unrealistically
likely to be fixed.

This patch sets the related CONFIG to always true and removes the
config prompt, keeping the change minimal, and, should !CONFIG_IPV6 ever
be fixed, easy to revert.

Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Paul Spooren <mail@aparcar.org>
Acked-by: Josef.Schlehofer <pepe.schlehofer@gmail.com>
Acked-by: Jo-Philipp Wich <jo@mein.io>
2022-08-20 21:41:03 +03:00
Florian Fainelli
e7ec2d7399 kernel: add KERNEL_DEBUG_VIRTUAL
This option allows turning on CONFIG_DEBUG_VIRTUAL which is useful to
debug incorrect uses of the virtual to physical and physical to virtual
translations functions.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2022-07-07 15:07:16 -07:00
Rafał Miłecki
abc5b28db1 bcm53xx: use -falign-functions=32 for kernel compilation
Northstar SoCs have pretty small CPU caches and their performance is
heavily affected by cache hits & misses. It means that all kind of
random code changes can affect performance as they often reorganize
(change alignment & possibly reorder) kernel symbols.

It was discussed in ARM / net mailinglists:
1. ARM router NAT performance affected by random/unrelated commits [1] [2]
2. Optimizing kernel compilation / alignments for network performance [3] [4]

It seems that -falign-functions can be used as a partial workaround. It
doesn't solve all cases (e.g. documented watchdog one [5]) but it surely
helps with many of them.

A complete long term solution may be PGO (profile-guided optimization)
but it isn't available at this point.

[1] https://lkml.org/lkml/2019/5/21/349
[2] https://www.spinics.net/lists/linux-block/msg40624.html
[3] https://lore.kernel.org/linux-arm-kernel/066fc320-dc04-11a4-476e-b0d11f3b17e6@gmail.com/T/
[4] https://www.spinics.net/lists/netdev/msg816103.html
[5] http://lists.openwrt.org/pipermail/openwrt-devel/2022-July/038989.html

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2022-07-03 13:59:12 +02:00
Rafał Miłecki
907d7d7472 kernel: support setting extra CFLAGS for kernel compilation
They may be used e.g. to optimize kernel size or performance.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2022-06-20 22:17:38 +02:00
Stijn Tintel
8f5c9a7d94 kernel: add KERNEL_BPF_EVENTS config option
This is required to use BPF maps of type BPF_MAP_TYPE_PERF_EVENT_ARRAY
for sending data from BPF programs to user-space for post-processing
or logging.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-05-18 13:32:06 +03:00
Tony Ambardar
531e0399cd build: add option KERNEL_DEBUG_INFO_BTF
Generate BTF (BPF Type Format) information from DWARF debug info. This is
embedded in the kernel and exported via sysfs as /sys/kernel/btf/vmlinux.
BTF data enhances kernel portability and introspection for BPF programs.

Selecting this also enables the dwarves host package which provides the
pahole tool used for BTF encoding.

Test using: "bpftool btf dump file /sys/kernel/btf/vmlinux format c"

This needs to depend on KERNEL_DEBUG_INFO_REDUCED not being set,
otherwise we can enable both KERNEL_DEBUG_INFO_BTF and
KERNEL_DEBUG_INFO_REDUCED, which will result in undefined behaviour.

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
[split DEBUG_INFO_REDUCED into separate commit, add dependency]
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-05-18 13:32:06 +03:00
Stijn Tintel
44bcad24b6 kernel: add DEBUG_INFO_REDUCED config option
Add DEBUG_INFO_REDUCED as a kernel config option and remove it from the
kernel configs. This is in preparation of the upcoming option to enable
BTF typeinfo, which is incompatible with DEBUG_INFO_REDUCED.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-05-18 13:32:06 +03:00
Stijn Tintel
d5dc6cdc53 kernel: add missing dependency to KERNEL_RPI_AXIPERF
This symbol is added by the bcm27xx target patches so it should depend
on that target.

Fixes: efd9463dcf ("kernel: add missing symbol for bcm27xx")
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-05-18 13:31:05 +03:00
Stijn Tintel
efd9463dcf kernel: add missing symbol for bcm27xx
When KERNEL_PERF_EVENTS is enabled in OpenWrt, the RPI_AXIPERF symbol is
exposed. Add a build option for it to fix build failures with
KERNEL_PERF_EVENTS enabled.

Fixes: 20ea6adbf1 ("bcm27xx: add support for linux v5.15")
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-05-17 20:54:25 +03:00
Stijn Tintel
500c37c56f kernel: add missing symbol
Enabling KERNEL_KPROBES exposes KERNEL_BPF_KPROBE_OVERRIDE. Add a build
option for it to fix build failures with KERNEL_KPROBES enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2022-04-02 23:41:27 +03:00
Petr Štetiar
ce7264a6e0 config: build: cleanup whitespace issue
In order to have it tidy.

Signed-off-by: Petr Štetiar <ynezz@true.cz>
2022-02-19 13:10:01 +01:00
Marek Behún
45d541bb40 kernel: add kmod-vrf
Add option to compile kmod-vrf, support for Virtual Routing and
Forwarding (Lite).

This module depends on NET_L3_MASTER_DEV, which is a boolean kernel
option, so we need to create a configuration option also for this, and
make kmod-vrf depend on it.

Signed-off-by: Marek Behún <kabel@kernel.org>
2022-02-01 22:59:09 +01:00
Daniel Golle
8a324fb759
uml: make use of 'rootfs-part' feature
Use 'rootfs-part' feature instead of referencing the TARGET_uml in
Config-images.in.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2022-01-23 19:48:31 +00:00
Daniel Golle
d05ac928f6
sunxi: make use of 'rootfs-part' feature
Use 'rootfs-part' feature instead of referencing the TARGET_sunxi in
Config-images.in.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2022-01-23 19:48:25 +00:00
Daniel Golle
3a69b4bbb9
omap: make use of 'rootfs-part' feature
Use 'rootfs-part' feature instead of referencing the TARGET_omap in
Config-images.in.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2022-01-23 19:48:20 +00:00
Matthew Hagan
033b6cef94 kernel: enhance multicast routing support
Certain utilities, such as smcroute [1], require additional multicast
routing options to be enabled, otherwise they will not function
correctly. Enable these relevant dependancies when IPv4 and/or IPv6
multicast routing are enabled.

[1] https://github.com/troglobit/smcroute/blob/master/README.md#linux-requirements

This increases the uncompressed kernel size on MIPS 24kc by 8KBytes
and the compressed kernel size by 1.8KBytes.

Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
2022-01-08 00:48:39 +01:00
Oldřich Jedlička
fd4ad6cae8 x86: added support to generate VHDX images
Added support to generate dynamic-sized VHDX images for Hyper-V.
Compile-tested on x86 and run-tested on Windows 10 21H2 (Hyper-V).

Signed-off-by: Oldřich Jedlička <oldium.pro@gmail.com>
2021-12-05 18:49:14 +01:00
Jianhui Zhao
43b498f669 kernel: remove non-existent config symbols
The crashlog patch as not ported to kernel 5.4.

Fixes: 4e0c54bc5b ("kernel: add support for kernel 5.4")
Signed-off-by: Jianhui Zhao <zhaojh329@gmail.com>
2021-11-20 18:53:14 +01:00
Stijn Tintel
38106a484c kernel: add missing symbol
Enabling KERNEL_FTRACE exposes the HIST_TRIGGERS triggers symbol. Add a
build option for it to fix build failures with KERNEL_FTRACE enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2021-11-15 03:13:43 +02:00
Stijn Tintel
786cbf0fa4 kernel: fix KERNEL_KASAN_VMALLOC build option
It should be config, not CONFIG.

Fixes: cbeab2cd99 ("kernel: add another missing KASAN symbol")
Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2021-11-07 18:57:12 +02:00
Stijn Tintel
0ccbcb0223 kernel: add missing keyword to KERNEL_KASAN_VMALLOC
The help keyword is missing, which breaks menuconfig etc.

Fixes: cbeab2cd99 ("kernel: add another missing KASAN symbol")

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2021-11-07 18:55:17 +02:00
Stijn Tintel
cbeab2cd99 kernel: add another missing KASAN symbol
Enabling KERNEL_KASAN exposes yet another missing symbol. This did not
appear on bcm27xx but is appearing now on x86/64. Add a new kernel build
option for KASAN_VMALLOC to fix build on x86/64 with KERNEL_KASAN
enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-11-07 18:38:16 +02:00
Stijn Tintel
c5fa7ec2a6 kernel: add missing UBSAN config symbols
Enabling KERNEL_UBSAN exposes several missing symbols. Add new kernel
build options for UBSAN_BOUNDS and UBSAN_TRAP, disable CONFIG_TEST_UBSAN
in the generic kernel configs and enable CONFIG_UBSAN_MISC in generic
5.10 config. The latter symbol was removed in later kernels, as it was
causing some issues, so just disable it in 5.10 instead of adding a
build option for it.

Fixes build failures with KERNEL_UBSAN enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-11-07 17:38:01 +02:00
Stijn Tintel
ec68c75c62 kernel: add missing KASAN config symbols
Enabling KERNEL_KASAN exposes several missing symbols. As KASAN_SW_TAGS
is only implemented for arm64 CPUs and requires clang, it doesn't make
sense to make this a build option so just default to KASAN_GENERIC and
disable KASAN_SW_TAGS.

While at it, disable TEST_KASAN_MODULE in the generic 5.10 config.

Fixes build failures with KERNEL_KASAN enabled.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-11-07 17:26:47 +02:00
Hauke Mehrtens
bdc2194cbb config: Activate SECCOMP also on MIPS 64
This activates SECCOMP also on mips64 and mips64el.

This was working fine in a basic test in qemu.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-11-03 23:52:08 +01:00
Felix Fietkau
2d5b83197a build: add HOST_OS_LINUX and HOST_OS_MACOS config symbols
This can be used to simplify host os tests in various places

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-11-01 16:37:52 +01:00
Josh Soref
323bd7b0f5 build: fix various typos
Fix typos in comment and user-facing help text.

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
[split out config changes, adjust commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2021-10-31 21:24:47 +01:00
Rosen Penev
6b2ed6101e uclibc++: remove
No package here depends on it. Furthermore, uClibc++ is a fairly buggy
C++ library and seems to be relatively inactive upstream.

It also lacks proper support for modern C++11 features.

The main benefit of it is size: 66.6 KB	vs 287.3 KB on mips24kc. Static
linking and LTO can help bring the size down of packages that need it.

Added warning message to uclibc++.mk

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-10-24 18:20:50 +02:00
Florian Eckert
b118efa0d2
buildsystem: add CONFIG_SECCOMP
Until now, this feature was switched on via the kernel configuration
option KERNEL_SECCOMP.

The follwing change a7f794cd2a now requires that
the package procd-seccomp must also enabled for buildinmg.

However, this is not the case we have no dependency and the imagebuilder
cannot build the image, because of the implicit package selection.

This change adds a new configuration option CONFIG_SECCOMP.
The new option  has the same behaviour as the configuration
option CONFIG_SELINUX.

If the CONFIG_SECCOMP is selected then the package procd-seccomp and
KERNEL_SECCOMP is enabled for this build.

Signed-off-by: Florian Eckert <fe@dev.tdt.de>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2021-10-16 02:00:47 +01:00
Hauke Mehrtens
d27f6e2c5d build: Replace KERNEL_LOCKUP_DETECTOR with KERNEL_SOFTLOCKUP_DETECTOR
The LOCKUP_DETECTOR configuration option split into the
SOFTLOCKUP_DETECTOR and HARDLOCKUP_DETECTOR configuration option some
time ago. The HARDLOCKUP_DETECTOR option is only working on some
architectures, but SOFTLOCKUP_DETECTOR should work everywhere. Replace
KERNEL_LOCKUP_DETECTOR with KERNEL_SOFTLOCKUP_DETECTOR.

LOCKUP_DETECTOR will be selected by SOFTLOCKUP_DETECTOR automatically.

Fixes: b951f53fba ("build: Add additional kernel debug options")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2021-09-13 13:04:21 +02:00
Stijn Tintel
57807f50de base-files: add option to make /var persistent
In OpenWrt, /var is symlinked to /tmp by default. This is done to reduce
the amount of writes to the flash chip, which often have not the
greatest durability. As a result, things like DHCP or UPnP lease files,
are not persistent across reboots.

Since OpenWrt can run on devices with more durable storage, it makes
sense to have an option for a persistent /var. Add an option to make
/var persistent. When enabled, /var will no longer be symlinked to /tmp,
but /var/run will be symlink to /tmp/run, as it should contains only
files that should not be kept during reboot. The option is off by
default, to maintain the current behaviour.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
2021-08-22 18:07:51 +03:00