Patrick Rohr aade10d51d net: change accept_ra_min_rtr_lft to affect all RA lifetimes ... commit 5027d54a9c 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. Fixes: 1671bcfd76 ("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>		2023-10-19 23:05:35 +02:00
..
caif	tty: cumulate and document tty_struct::flow* members	2021-05-13 16:57:16 +02:00
device_drivers	ixgbe: Document how to enable NBASE-T support	2021-12-22 09:32:43 +01:00
devlink	ice: Print the api_patch as part of the fw.mgmt.api	2021-10-14 10:14:46 -07:00
dsa	docs: net: dsa: sja1105: fix reference to sja1105.txt	2021-09-19 12:45:03 +01:00
mac80211_hwsim	…
6lowpan.rst	docs: networking: convert 6lowpan.txt to ReST	2020-02-28 14:52:36 +01:00
6pack.rst	docs: networking: convert 6pack.txt to ReST	2020-04-28 14:38:38 -07:00
af_xdp.rst	xsk: Honor SO_BINDTODEVICE on bind	2023-07-23 13:47:29 +02:00
alias.rst	…
arcnet-hardware.rst	docs: networking: arcnet-hardware.rst: don't duplicate chapter names	2020-05-01 12:24:43 -07:00
arcnet.rst	Documentation: networking: arcnet: drop doubled word	2020-07-04 17:46:21 -07:00
atm.rst	docs: networking: convert atm.txt to ReST	2020-04-28 14:38:38 -07:00
ax25.rst	Documentation: networking: ax25: drop doubled word	2020-07-04 17:46:21 -07:00
bareudp.rst	Documentation: bareudp: Corrected description of bareudp module.	2020-07-28 17:53:03 -07:00
batman-adv.rst	batman-adv: Move IRC channel to hackint.org	2021-08-08 20:05:46 +02:00
bonding.rst	Bonding: add arp_missed_max option	2023-06-05 09:21:19 +02:00
bridge.rst	…
can.rst	can: add a note that RECV_OWN_MSGS frames are subject to filtering	2021-04-24 14:36:51 +02:00
can_ucan_protocol.rst	Documentation: networking: can_ucan_protocol: drop doubled words	2020-07-04 17:46:21 -07:00
cdc_mbim.rst	docs: networking: convert cdc_mbim.txt to ReST	2020-04-28 14:38:39 -07:00
checksum-offloads.rst	docs: networking: convert netdev-features.txt to ReST	2020-04-30 12:56:36 -07:00
dccp.rst	net: dccp: Add SIOCOUTQ IOCTL support (send buffer fill)	2020-07-22 17:00:37 -07:00
dctcp.rst	docs: networking: convert dctcp.txt to ReST	2020-04-28 14:38:39 -07:00
dns_resolver.rst	docs: networking: convert dns_resolver.txt to ReST	2020-04-28 14:39:46 -07:00
driver.rst	docs: networking: convert driver.txt to ReST	2020-04-28 14:39:46 -07:00
eql.rst	docs: networking: convert eql.txt to ReST	2020-04-28 14:39:46 -07:00
ethtool-netlink.rst	ethtool: add two coalesce attributes for CQE mode	2021-08-24 07:38:28 -07:00
failover.rst	…
fib_trie.rst	docs: networking: convert fib_trie.txt to ReST	2020-04-28 14:39:46 -07:00
filter.rst	bpf: Refactor BPF_PROG_RUN into a function	2021-08-17 00:45:07 +02:00
gen_stats.rst	docs: networking: convert gen_stats.txt to ReST	2020-04-28 14:39:46 -07:00
generic-hdlc.rst	docs: networking: convert generic-hdlc.txt to ReST	2020-04-28 14:39:46 -07:00
generic_netlink.rst	docs: networking: convert generic_netlink.txt to ReST	2020-04-28 14:39:46 -07:00
gtp.rst	docs: networking: convert gtp.txt to ReST	2020-04-28 14:39:46 -07:00
ieee802154.rst	docs: net: ieee802154.rst: fix C expressions	2020-10-15 07:49:41 +02:00
ila.rst	docs: networking: convert ila.txt to ReST	2020-04-28 14:39:47 -07:00
index.rst	Remove DECnet support from kernel	2023-06-21 15:59:15 +02:00
ioam6-sysctl.rst	ipv6: ioam: Documentation for new IOAM sysctls	2021-07-21 08:14:33 -07:00
ip-sysctl.rst	net: change accept_ra_min_rtr_lft to affect all RA lifetimes	2023-10-19 23:05:35 +02:00
ip_dynaddr.rst	docs: networking: convert ip_dynaddr.txt to ReST	2020-04-28 14:39:47 -07:00
ipddp.rst	docs: networking: convert ipddp.txt to ReST	2020-04-28 14:39:47 -07:00
ipsec.rst	docs: networking: convert ipsec.txt to ReST	2020-04-28 14:39:47 -07:00
ipv6.rst	docs: networking: convert ipv6.txt to ReST	2020-04-28 14:40:18 -07:00
ipvlan.rst	docs: networking: convert ipvlan.txt to ReST	2020-04-28 14:40:18 -07:00
ipvs-sysctl.rst	netfilter: ipvs: Fix reuse connection if RS weight is 0	2021-12-01 09:04:45 +01:00
j1939.rst	can: j1939: add tables for the CAN identifier and its fields	2020-11-20 09:43:29 +01:00
kapi.rst	wimax: move out to staging	2020-10-29 19:27:45 +01:00
kcm.rst	docs: networking: convert kcm.txt to ReST	2020-04-28 14:40:19 -07:00
l2tp.rst	docs: networking: add tracepoint info to l2tp.rst	2020-08-22 12:44:37 -07:00
lapb-module.rst	docs: networking: convert lapb-module.txt to ReST	2020-04-30 12:56:35 -07:00
mac80211-auth-assoc-deauth.txt	…
mac80211-injection.rst	doc: networking: wireless: fix wiki website url	2020-06-08 10:05:53 +02:00
mctp.rst	mctp: unify sockaddr_mctp types	2021-10-18 13:47:09 +01:00
mpls-sysctl.rst	docs: networking: convert mpls-sysctl.txt to ReST	2020-04-30 12:56:36 -07:00
mptcp-sysctl.rst	mptcp: faster active backup recovery	2021-08-14 11:37:25 +01:00
msg_zerocopy.rst	…
multiqueue.rst	docs: networking: convert multiqueue.txt to ReST	2020-04-30 12:56:36 -07:00
net_dim.rst	docs: networking: add full DIM API	2020-04-10 18:11:04 -07:00
net_failover.rst	docs: networking: net_failover: Fix a few typos	2020-03-03 16:07:02 -08:00
netconsole.rst	docs: networking: convert netconsole.txt to ReST	2020-04-30 12:56:36 -07:00
netdev-FAQ.rst	docs: networking: netdevsim rules	2021-08-04 12:43:27 +01:00
netdev-features.rst	net: hsr: add offloading support	2021-02-11 13:24:44 -08:00
netdevices.rst	net: bonding: move ioctl handling to private ndo operation	2021-07-27 20:11:45 +01:00
netfilter-sysctl.rst	docs: networking: convert netfilter-sysctl.txt to ReST	2020-04-30 12:56:36 -07:00
netif-msg.rst	docs: networking: convert netif-msg.txt to ReST	2020-04-30 12:56:36 -07:00
nexthop-group-resilient.rst	Documentation: net: Document resilient next-hop groups	2021-03-29 13:51:38 -07:00
nf_conntrack-sysctl.rst	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2021-09-03 16:20:37 -07:00
nf_flowtable.rst	docs: nf_flowtable: fix compilation and warnings	2021-03-25 17:42:02 -07:00
nfc.rst	…
openvswitch.rst	docs: networking: convert openvswitch.txt to ReST	2020-04-30 12:56:36 -07:00
operstates.rst	docs: operstates: document IF_OPER_TESTING	2021-08-02 15:16:04 +01:00
packet_mmap.rst	docs: networking: Replace strncpy() with strscpy()	2021-06-04 11:21:43 -06:00
page_pool.rst	net: page_pool: Add page_pool_put_page_bulk() to page_pool.rst	2020-11-24 14:56:54 -08:00
phonet.rst	docs: networking: convert phonet.txt to ReST	2020-04-30 12:56:37 -07:00
phy.rst	net: phy: Add 25G BASE-R interface mode	2021-06-12 13:08:57 -07:00
pktgen.rst	pktgen: document the latest pktgen usage options	2021-08-25 13:44:30 +01:00
plip.rst	docs: networking: convert PLIP.txt to ReST	2020-04-30 12:56:37 -07:00
ppp_generic.rst	docs: update ppp_generic.rst to document new ioctls	2020-12-10 13:57:36 -08:00
proc_net_tcp.rst	docs: networking: convert proc_net_tcp.txt to ReST	2020-04-30 12:56:37 -07:00
radiotap-headers.rst	docs: networking: convert radiotap-headers.txt to ReST	2020-04-30 12:56:37 -07:00
rds.rst	docs: networking: convert rds.txt to ReST	2020-04-30 12:56:37 -07:00
regulatory.rst	doc: networking: wireless: fix wiki website url	2020-06-08 10:05:53 +02:00
rxrpc.rst	Documentation: networking: rxrpc: drop doubled word	2020-07-04 17:46:21 -07:00
scaling.rst	docs: networking: update XPS to account for netif_set_xps_queue	2020-10-13 16:21:54 -07:00
sctp.rst	docs: networking: convert sctp.txt to ReST	2020-04-30 12:56:38 -07:00
secid.rst	docs: networking: convert secid.txt to ReST	2020-04-30 12:56:38 -07:00
seg6-sysctl.rst	doc: move seg6_flowlabel to seg6-sysctl.rst	2021-04-14 13:13:15 -07:00
segmentation-offloads.rst	…
sfp-phylink.rst	net: mdio: Remove of_phy_attach()	2021-02-17 13:17:49 -08:00
snmp_counter.rst	net-next: docs: Fix typos in snmp_counter.rst	2021-01-05 17:07:38 -08:00
statistics.rst	docs: networking: extend the statistics documentation	2021-04-16 16:59:20 -07:00
strparser.rst	docs: networking: convert strparser.txt to ReST	2020-04-30 12:56:38 -07:00
switchdev.rst	Documentation: networking: switchdev: add missing "and" word	2021-03-17 12:34:34 -07:00
sysfs-tagging.rst	Documentation: better locations for sysfs-pci, sysfs-tagging	2020-10-09 09:33:23 -06:00
tc-actions-env-rules.rst	docs: networking: convert tc-actions-env-rules.txt to ReST	2020-04-30 12:56:38 -07:00
tcp-thin.rst	docs: networking: convert tcp-thin.txt to ReST	2020-04-30 12:56:38 -07:00
team.rst	docs: networking: convert team.txt to ReST	2020-04-30 12:56:38 -07:00
timestamping.rst	dev_ioctl: split out ndo_eth_ioctl	2021-07-27 20:11:45 +01:00
tipc.rst	Documentation: add more details in tipc.rst	2021-07-01 13:18:18 -07:00
tls-offload-layers.svg	…
tls-offload-reorder-bad.svg	…
tls-offload-reorder-good.svg	…
tls-offload.rst	net: Disable NETIF_F_HW_TLS_RX when RXCSUM is disabled	2021-01-19 15:58:05 -08:00
tls.rst	…
tproxy.rst	docs: networking: convert tproxy.txt to ReST	2020-04-30 12:56:38 -07:00
tuntap.rst	docs: networking: Replace strncpy() with strscpy()	2021-06-04 11:21:43 -06:00
udplite.rst	docs: networking: convert udplite.txt to ReST	2020-05-01 12:24:40 -07:00
vrf.rst	doc: Document unexpected tcp_l3mdev_accept=1 behavior	2021-08-23 11:53:24 +01:00
vxlan.rst	docs: vxlan: add info about device features	2020-09-28 12:50:12 -07:00
x25-iface.rst	net: x25: Queue received packets in the drivers instead of per-CPU queues	2021-04-05 11:42:12 -07:00
x25.rst	net: x25: Remove unimplemented X.25-over-LLC code stubs	2020-12-12 17:15:33 -08:00
xfrm_device.rst	docs: networking: Fix a typo	2021-03-20 19:02:42 -07:00
xfrm_proc.rst	docs: networking: convert xfrm_proc.txt to ReST	2020-05-01 12:24:40 -07:00
xfrm_sync.rst	docs: networking: convert xfrm_sync.txt to ReST	2020-05-01 12:24:41 -07:00
xfrm_sysctl.rst	docs: networking: convert xfrm_sysctl.txt to ReST	2020-05-01 12:24:41 -07:00