Chris Novakovic c04d2cb200 ipconfig: Write NTP server IPs to /proc/net/ipconfig/ntp_servers ... Distributed filesystems are most effective when the server and client clocks are synchronised. Embedded devices often use NFS for their root filesystem but typically do not contain an RTC, so the clocks of the NFS server and the embedded device will be out-of-sync when the root filesystem is mounted (and may not be synchronised until late in the boot process). Extend ipconfig with the ability to export IP addresses of NTP servers it discovers to /proc/net/ipconfig/ntp_servers. They can be supplied as follows: - If ipconfig is configured manually via the "ip=" or "nfsaddrs=" kernel command line parameters, one NTP server can be specified in the new "<ntp0-ip>" parameter. - If ipconfig is autoconfigured via DHCP, request DHCP option 42 in the DHCPDISCOVER message, and record the IP addresses of up to three NTP servers sent by the responding DHCP server in the subsequent DHCPOFFER message. ipconfig will only write the NTP server IP addresses it discovers to /proc/net/ipconfig/ntp_servers, one per line (in the order received from the DHCP server, if DHCP autoconfiguration is used); making use of these NTP servers is the responsibility of a user space process (e.g. an initrd/initram script that invokes an NTP client before mounting an NFS root filesystem). Signed-off-by: Chris Novakovic <chris@chrisn.me.uk> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-04-24 13:40:42 -04:00
..
ABI	RTC for 4.17	2018-04-10 10:22:27 -07:00
accelerators	ocxl: Document the OCXL_IOCTL_GET_METADATA IOCTL	2018-03-02 13:02:15 +11:00
accounting
acpi
admin-guide	ARM:	2018-04-09 11:42:31 -07:00
aoe
arm	MTD changes:	2018-04-06 12:15:41 -07:00
arm64	ARM:	2018-04-09 11:42:31 -07:00
auxdisplay
backlight
block
blockdev
bpf	bpf, doc: add description wrt native/bpf clang target and pointer size	2018-03-20 15:47:45 -07:00
bus-devices
cdrom	Documentation/cdrom: fix German sharp s in LaTex	2018-03-08 19:35:29 -07:00
cgroup-v1	page cache: use xa_lock	2018-04-11 10:28:39 -07:00
cma
connector
console
core-api	textsearch: fix kernel-doc warnings and add kernel-api section	2018-04-16 18:53:13 -04:00
cpu-freq	cpufreq: Drop cpufreq_table_validate_and_show()	2018-04-10 08:40:45 +02:00
cpuidle	cpuidle: Add definition of residency to sysfs documentation	2018-04-09 13:44:37 +02:00
crypto	crypto: doc - clarify hash callbacks state machine	2018-03-31 01:33:02 +08:00
dev-tools	There's been a fair amount of activity in Documentation/ this time around:	2018-04-03 13:35:51 -07:00
device-mapper	dm verity: add 'check_at_most_once' option to only validate hashes once	2018-04-03 15:04:29 -04:00
devicetree	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2018-04-21 16:32:48 -04:00
doc-guide	doc-guide: kernel-doc: add comment about formatting verification	2018-02-23 08:06:15 -07:00
driver-api	MTD changes:	2018-04-06 12:15:41 -07:00
driver-model	serdev: Introduce devm_serdev_device_open()	2018-01-08 10:08:34 +00:00
early-userspace
EDID
extcon
fault-injection	Documentation: nvme: Documentation for nvme fault injection	2018-03-26 08:53:43 -06:00
fb
features	arch: remove obsolete architecture ports	2018-04-02 20:20:12 -07:00
filesystems	ipconfig: Write NTP server IPs to /proc/net/ipconfig/ntp_servers	2018-04-24 13:40:42 -04:00
firmware_class
fmc
fpga
gpio	Documentation: gpio: Move drivers-on-gpio.txt to driver-api	2018-03-23 04:22:29 +01:00
gpu	Linux 4.16-rc7	2018-03-28 14:30:41 +10:00
hid
hwmon	hwmon: (lm92) Add max6635 to lm92_id[]	2018-03-22 09:33:24 -07:00
i2c	i2c: i801: Add missing documentation entries for Braswell and Kaby Lake	2018-02-21 09:17:20 +01:00
ia64	ia64: doc: tweak whitespace for 'console=' parameter	2018-03-05 14:41:38 -08:00
ide
iio
infiniband	Documentation/ABI: update infiniband sysfs interfaces	2018-02-23 08:18:33 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2018-04-05 13:21:57 -07:00
ioctl	arch: remove tile port	2018-03-16 10:56:03 +01:00
isdn	Documentation/isdn: check and fix dead links ...	2018-03-26 12:31:13 -04:00
kbuild	Kconfig updates for v4.17	2018-04-03 16:28:01 -07:00
kdump
kernel-hacking	Documentation: Fix misconversion of #if	2018-01-17 16:45:01 -07:00
laptops
leds
lightnvm
livepatch	livepatch: Allow to call a custom callback when freeing shadow variables	2018-04-17 13:42:48 +02:00
locking	Linux 4.16-rc2	2018-02-21 09:57:55 +01:00
m68k
maintainer	docs: Add an intro note to the maintainers handbook	2017-12-11 14:46:10 -07:00
md	raid5-ppl: PPL support for disks with write-back cache enabled	2018-01-15 14:29:42 -08:00
media	media: extended-controls.rst: transmitter -> receiver	2018-04-04 08:05:20 -04:00
memory-devices
mic
mips	Documentation: mips: Update AU1xxx_IDE Kconfig dependencies	2018-02-01 12:45:35 -07:00
misc-devices
mmc
mtd	mtd: spi-nor: add an API to restore the status of SPI flash chip	2017-12-13 00:36:00 +01:00
namespaces
netlabel
networking	docs: ip-sysctl.txt: fix name of some ipv6 variables	2018-04-19 15:20:09 -04:00
nfc
nios2
nvdimm
nvmem
openrisc
parisc
PCI	PCI: Update location of pci.ids file	2018-02-22 15:00:43 -06:00
pcmcia
perf	drivers/bus: Move Arm CCN PMU driver	2018-03-06 17:26:15 +01:00
phy
platform
power	PM / hibernate: Make passing hibernate offsets more friendly	2018-03-30 12:01:20 +02:00
powerpc
pps
process	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-04-15 16:12:35 -07:00
pti
ptp	ptp: Fix documentation to match code.	2018-03-26 12:13:21 -04:00
rapidio	Documentation: rapidio: move sysfs interface to ABI	2018-02-23 08:25:45 -07:00
RCU
s390	vfio-ccw: update documentation	2018-03-01 17:32:14 +01:00
scheduler
scsi	scsi: documentation: Obsolete documentation references	2018-03-21 18:34:20 -04:00
security	selinux: Update SELinux SCTP documentation	2018-03-20 16:26:15 -04:00
serial
sh
sound
sparc	sparc64: Add support for ADI (Application Data Integrity)	2018-03-18 07:38:48 -07:00
sphinx	Documentation/sphinx: Fix Directive import error	2018-03-09 10:46:14 -07:00
sphinx-static
spi
sysctl	taint: add taint for randstruct	2018-04-11 10:28:35 -07:00
target
thermal	thermal: Add cooling device's statistics in sysfs	2018-04-02 21:49:01 +08:00
timers	sched/isolation: Eliminate NO_HZ_FULL_ALL	2018-02-15 15:40:37 -08:00
trace	New features:	2018-04-10 11:27:30 -07:00
translations	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk	2018-02-01 13:36:15 -08:00
usb	Documentation updates for 4.16. New stuff includes refcount_t	2018-01-31 19:25:25 -08:00
userspace-api
virtual	KVM: trivial documentation cleanups	2018-03-28 22:47:06 +02:00
vm	page cache: use xa_lock	2018-04-11 10:28:39 -07:00
w1	Documentation updates for 4.16. New stuff includes refcount_t	2018-01-31 19:25:25 -08:00
watchdog	watchdog: remove bfin_wdt driver	2018-03-26 15:57:04 +02:00
wimax
x86	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-04-15 16:12:35 -07:00
xtensa	xtensa: add support for KASAN	2017-12-16 22:37:12 -08:00
.gitignore
00-INDEX	CRIS: Drop support for the CRIS port	2018-03-16 10:56:05 +01:00
atomic_bitops.txt	locking/atomic/bitops: Document and clarify ordering semantics for failed test_and_{}_bit()	2018-02-13 14:55:53 +01:00
atomic_t.txt
bcache.txt
bt8xxgpio.txt
btmrvl.txt
bus-virt-phys-mapping.txt
cachetlb.txt
cgroup-v2.txt	cgroup, docs: document the root cgroup behavior of cpu and io controllers	2018-01-16 08:07:09 -08:00
Changes
circular-buffers.txt
clearing-warn-once.txt
clk.txt	Documentation: clk: enable lock is not held for clk_is_enabled API	2018-03-16 15:44:43 -07:00
CodingStyle
conf.py	docs: Remove "could not extract kernel version" warning	2017-12-11 15:20:04 -07:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt
DMA-ISA-LPC.txt
docutils.conf
dontdiff
efi-stub.txt
eisa.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt
highuid.txt
hw_random.txt
hwspinlock.txt
index.rst	Documentation: add Linux tracing to Sphinx TOC tree	2018-03-07 10:22:53 -07:00
Intel-IOMMU.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt	irqdomain: Kill CONFIG_IRQ_DOMAIN_DEBUG	2018-01-24 12:32:58 +01:00
IRQ.txt
irqflags-tracing.txt
isa.txt
isapnp.txt
kernel-per-CPU-kthreads.txt
kobject.txt
kprobes.txt
kref.txt
ldm.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lsm.txt
lzo.txt
mailbox.txt
Makefile
memory-barriers.txt	locking/memory-barriers: De-emphasize smp_read_barrier_depends() some more	2018-03-10 10:22:22 +01:00
memory-hotplug.txt
men-chameleon-bus.txt
nommu-mmap.txt
ntb.txt
numastat.txt
padata.txt
parport-lowlevel.txt
percpu-rw-semaphore.txt
phy.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
pwm.txt
rbtree.txt
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt	Documentation: rtc: move iotcl interface documentation to ABI	2018-01-12 00:20:41 +01:00
SAK.txt
sgi-ioc4.txt
siphash.txt
SM501.txt
smsc_ece1099.txt
speculation.txt	Documentation: Document array_index_nospec	2018-01-30 21:54:28 +01:00
static-keys.txt
SubmittingPatches
svga.txt
switchtec.txt
sync_file.txt
tee.txt
this_cpu_ops.txt
unaligned-memory-access.txt
vfio-mediated-device.txt
vfio.txt
video-output.txt
xillybus.txt
xz.txt
zorro.txt