Patrick Rohr
2d6c1375ba
BACKPORT: net: change accept_ra_min_rtr_lft to affect all RA lifetimes ...
commit 5027d54a9c30bc7ec808360378e2b4753f053f25 upstream.
accept_ra_min_rtr_lft only considered the lifetime of the default route
and discarded entire RAs accordingly.
This change renames accept_ra_min_rtr_lft to accept_ra_min_lft, and
applies the value to individual RA sections; in particular, router
lifetime, PIO preferred lifetime, and RIO lifetime. If any of those
lifetimes are lower than the configured value, the specific RA section
is ignored.
In order for the sysctl to be useful to Android, it should really apply
to all lifetimes in the RA, since that is what determines the minimum
frequency at which RAs must be processed by the kernel. Android uses
hardware offloads to drop RAs for a fraction of the minimum of all
lifetimes present in the RA (some networks have very frequent RAs (5s)
with high lifetimes (2h)). Despite this, we have encountered networks
that set the router lifetime to 30s which results in very frequent CPU
wakeups. Instead of disabling IPv6 (and dropping IPv6 ethertype in the
WiFi firmware) entirely on such networks, it seems better to ignore the
misconfigured routers while still processing RAs from other IPv6 routers
on the same network (i.e. to support IoT applications).
The previous implementation dropped the entire RA based on router
lifetime. This turned out to be hard to expand to the other lifetimes
present in the RA in a consistent manner; dropping the entire RA based
on RIO/PIO lifetimes would essentially require parsing the whole thing
twice.
Change-Id: I2168608875629ae07bbd30a02a061284110693e7
Fixes: 1671bcfd76fd ("net: add sysctl accept_ra_min_rtr_lft")
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Patrick Rohr <prohr@google.com>
Reviewed-by: Maciej Żenczykowski <maze@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230726230701.919212-1-prohr@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-05-07 10:16:30 -04:00
Merge tag 'LA.UM.9.14.1.r1-21100-QCM6490.QISI15.0' of https://git.codelinaro.org/clo/la/kernel/msm-5.4 into android13-5.4-lahaina
2026-04-30 20:46:30 +03:00
psi: Fix uaf issue when psi trigger is destroyed while being polled
2022-02-05 12:35:36 +01:00
Merge android11-5.4.302(91d385eb) into msm-5.4
2026-01-30 11:41:11 +05:30
Merge android11-5.4.134+ ( dca02b1) into msm-5.4
2021-10-06 09:48:07 +05:30
This is the 5.4.301 stable release
2025-10-30 07:52:10 +00:00
Revert "BACKPORT: FROMLIST: Update Inline Encryption from v5 to v6 of patch series"
2020-03-07 13:06:47 -08:00
UPSTREAM: bpf/flow_dissector: add mode to enforce global BPF flow dissector
2026-01-14 17:48:07 -08:00
BACKPORT: bpf: Restrict bpf_trace_printk()'s %s usage and add %pks, %pus specifier
2026-01-14 18:12:53 -08:00
Documentation: cpufreq: Update policy notifier documentation
2019-09-02 22:44:05 +02:00
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2019-09-18 12:11:14 -07:00
This is the 5.4.235 stable release
2023-03-12 15:42:52 +00:00
Linus 5.3-rc1
2019-07-23 16:21:59 -07:00
This is the 5.4.291 stable release
2025-03-13 14:53:52 +00:00
Merge android11-5.4.233+ ( 4716ccc) into msm-5.4
2023-05-30 11:16:10 +05:30
debugfs: fix error when writing negative value to atomic_t debugfs file
2023-01-18 11:40:56 +01:00
fbdev: fix numbering of fbcon options
2020-02-24 08:36:42 +01:00
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
Merge android11-5.4.274 ( 564901b) into msm-5.4
2024-07-24 20:38:43 -07:00
Documentation: ACPI: Fix parent device references
2025-08-28 16:21:23 +02:00
Documentation: fpga: dfl: add descriptions for virtualization and new interfaces.
2019-09-03 19:35:42 -07:00
Merge drm/drm-next into drm-intel-next-queued
2019-08-22 00:10:36 -07:00
Revert "hwmon: Make chip parameter for with_info API mandatory"
2022-06-25 12:44:36 +02:00
docs: i2c: convert to ReST and add to driver-api bookset
2019-07-31 13:25:27 -06:00
Documentation/infiniband: update name of some functions
2019-09-13 16:55:55 -03:00
Input: iforce - add support for Boeder Force Feedback Wheel
2022-09-20 12:27:59 +02:00
Merge 5.4.248 into android11-5.4-lts
2023-06-22 16:16:24 +00:00
docs: isdn: convert to ReST and add to kAPI bookset
2019-07-31 13:30:25 -06:00
FROMLIST: kbuild: Add environment variables for userprogs flags
2025-09-28 10:00:32 +02:00
Revert "ANDROID: Revert "Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux""
2019-11-13 10:14:45 +00:00
UPSTREAM: leds: multicolor: Introduce a multicolor class definition
2022-12-21 16:28:02 +00:00
doc 🔒 remove reference to clever use of read-write lock
2019-09-14 01:53:27 -06:00
docs: README.buddha: convert to ReST and add to m68k book
2019-07-31 13:30:10 -06:00
docs: Fix typo on pull requests guide
2019-08-12 15:14:14 -06:00
Revert "media: rename VFL_TYPE_GRABBER to _VIDEO"
2024-04-17 16:49:02 +00:00
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
Docs: misc: xilinx_sdfec: Add documentation
2019-08-15 17:54:38 +02:00
BACKPORT: net: change accept_ra_min_rtr_lft to affect all RA lifetimes
2026-05-07 10:16:30 -04:00
docs: nios2: add it to the main Documentation body
2019-07-31 13:31:51 -06:00
docs: openrisc: convert to ReST and add to documentation body
2019-07-31 13:30:20 -06:00
docs: parisc: convert to ReST and add to documentation body
2019-07-31 13:30:15 -06:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-08-27 14:23:31 -07:00
PM: runtime: Add pm_runtime_get_if_active()
2023-08-30 16:27:12 +02:00
docs: powerpc: Add missing documentation reference
2019-09-17 23:59:34 +10:00
Merge tag 'ASB-2024-10-05_11-5.4' of https://android.googlesource.com/kernel/common into android13-5.4-lahaina
2024-10-09 18:08:17 +00:00
Merge branches 'consolidate.2019.08.01b', 'fixes.2019.08.12a', 'lists.2019.08.13a' and 'torture.2019.08.01b' into HEAD
2019-08-13 14:30:30 -07:00
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
Documentation/s390: remove outdated debugging390 documentation
2019-08-21 12:41:43 +02:00
sched/fair: Fix low cpu usage with high throttling by removing expiration of cpu-local slices
2019-08-08 09:09:30 +02:00
scsi: smartpqi: Update attribute name to driver_version
2020-01-17 19:48:27 +01:00
BACKPORT: crypto: lib/sha1 - rename "sha" to "sha1"
2025-12-23 13:36:17 -08:00
Merge android11-5.4.274 ( 564901b) into msm-5.4
2024-07-24 20:38:43 -07:00
docs: kernel_include.py: Cope with docutils 0.21
2024-05-25 16:17:18 +02:00
spi: docs: convert to ReST and add it to the kABI bookset
2019-07-31 14:13:13 -06:00
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
sched/isolation: Prevent boot crash when the boot CPU is nohz_full
2025-04-10 14:29:35 +02:00
UPSTREAM: ftrace: Introduce PERMANENT ftrace_ops flag
2025-12-23 13:35:45 -08:00
Revert "media: rename VFL_TYPE_GRABBER to _VIDEO"
2024-04-17 16:49:02 +00:00
FROMGIT: usb: gadget: u_ether: support configuring interface names.
2025-04-26 21:17:22 +03:00
Documentation: seccomp: Fix user notification documentation
2021-06-03 08:59:03 +02:00
KVM: s390: disable migration mode when dirty tracking is disabled
2023-03-11 16:44:01 +01:00
cpuidle: add haltpoll governor
2019-07-30 17:27:37 +02:00
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 19:54:46 +02:00
docs: w1: convert to ReST and add to the kAPI group of docs
2019-07-31 14:16:17 -06:00
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
x86/CPU/AMD: Save AMD NodeId as cpu_die_id
2020-12-30 11:51:47 +01:00
xtensa: fix TLBTEMP area placement
2020-11-24 13:29:22 +01:00
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
locking/atomic: Make test_and_*_bit() ordered on failure
2022-08-25 11:18:31 +02:00
docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0
2022-06-14 18:11:49 +02:00
dma-mapping: remove dma_release_declared_memory
2019-09-04 11:13:19 +02:00
Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE""
2022-05-25 09:14:38 +02:00
linkage: Introduce new macros for assembler symbols
2020-11-10 12:37:24 +01:00
ipmi: docs: don't advertise deprecated sysfs entries
2024-11-08 16:20:29 +01:00
lib/lzo: fix ambiguous encoding bug in lzo-rle
2020-06-17 16:40:28 +02:00
Merge remote-tracking branch 'remotes/origin/tmp-1a9d915' into msm-lahaina
2019-08-02 10:55:28 -07:00
mhi: add snapshot for MHI driver stack
2019-12-25 21:32:42 -08:00
padata: allocate workqueue internally
2019-09-13 21:15:39 +10:00
2d6c1375ba
