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linux/net/batman-adv
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Linus Lüssing 4c34d5fd8c batman-adv: mcast: don't send link-local multicast to mcast routers 
commit 938f2e0b57ffe8a6df71e1e177b2978b1b33fe5e upstream.

The addition of routable multicast TX handling introduced a
bug/regression for packets with a link-local multicast destination:
These packets would be sent to all batman-adv nodes with a multicast
router and to all batman-adv nodes with an old version without multicast
router detection.

This even disregards the batman-adv multicast fanout setting, which can
potentially lead to an unwanted, high number of unicast transmissions or
even congestion.

Fixing this by avoiding to send link-local multicast packets to nodes in
the multicast router list.

Fixes: 11d458c1cb9b ("batman-adv: mcast: apply optimizations for routable packets, too")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-11 15:25:00 +01:00
..
bat_algo.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_algo.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_iv_ogm.c
batman-adv: Avoid WARN_ON timing related checks
2021-06-23 14:42:41 +02:00
bat_iv_ogm.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_v_elp.c
batman-adv: Migrate to linux/prandom.h
2020-08-18 19:39:54 +02:00
bat_v_elp.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_v_ogm.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-09-04 21:28:59 -07:00
bat_v_ogm.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_v.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bat_v.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bitarray.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bitarray.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
bridge_loop_avoidance.c
net: batman-adv: fix error handling
2021-11-02 19:48:22 +01:00
bridge_loop_avoidance.h
batman-adv: mcast: fix duplicate mcast packets in BLA backbone from mesh
2020-09-15 10:05:24 +02:00
debugfs.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
debugfs.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
distributed-arp-table.c
batman-adv: Fix typos and grammar in documentation
2020-06-26 10:36:30 +02:00
distributed-arp-table.h
batman-adv: remove unused inline function batadv_arp_change_timeout
2020-04-24 15:22:41 +02:00
fragmentation.c
batman-adv: Don't always reallocate the fragmentation skb head
2020-11-27 08:02:55 +01:00
fragmentation.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
gateway_client.c
batman-adv: Avoid uninitialized chaddr when handling DHCP
2020-08-18 19:40:03 +02:00
gateway_client.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
gateway_common.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
gateway_common.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
hard-interface.c
batman-adv: Consider fragmentation for needed_headroom
2020-11-27 08:02:55 +01:00
hard-interface.h
batman-adv: Drop unused function batadv_hardif_remove_interfaces()
2020-08-18 19:39:53 +02:00
hash.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
hash.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
icmp_socket.c
batadv_socket_read(): get rid of pointless access_ok()
2020-05-20 20:31:33 -04:00
icmp_socket.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
Kconfig
batman-adv: Disable CONFIG_BATMAN_ADV_SYSFS by default
2020-01-01 00:57:07 +01:00
log.c
batman-adv: set .owner to THIS_MODULE
2020-11-15 11:43:56 +01:00
log.h
batman-adv: Fix typos and grammar in documentation
2020-06-26 10:36:30 +02:00
main.c
net: batman-adv: fix error handling
2021-11-02 19:48:22 +01:00
main.h
batman-adv: Start new development cycle
2020-08-18 19:39:53 +02:00
Makefile
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
multicast.c
batman-adv: mcast: don't send link-local multicast to mcast routers
2022-01-11 15:25:00 +01:00
multicast.h
batman-adv: mcast: don't send link-local multicast to mcast routers
2022-01-11 15:25:00 +01:00
netlink.c
genetlink: move to smaller ops wherever possible
2020-10-02 19:11:11 -07:00
netlink.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
network-coding.c
net: batman-adv: fix error handling
2021-11-02 19:48:22 +01:00
network-coding.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
originator.c
batman-adv: Fix typos and grammar in documentation
2020-06-26 10:36:30 +02:00
originator.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
routing.c
batman-adv: mcast/TT: fix wrongly dropped or rerouted packets
2020-09-05 08:45:46 +02:00
routing.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
send.c
batman-adv: Drop repeated words in comments
2020-08-18 19:39:54 +02:00
send.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
soft-interface.c
batman-adv: mcast: don't send link-local multicast to mcast routers
2022-01-11 15:25:00 +01:00
soft-interface.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
sysfs.c
batman-adv: Fix refcnt leak in batadv_store_throughput_override
2020-04-21 10:08:05 +02:00
sysfs.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
tp_meter.c
batman-adv: Fix typos and grammar in documentation
2020-06-26 10:36:30 +02:00
tp_meter.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
trace.c
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
trace.h
batman-adv: trace: Drop unneeded types.h include
2020-04-21 10:07:31 +02:00
translation-table.c
net: batman-adv: fix error handling
2021-11-02 19:48:22 +01:00
translation-table.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
tvlv.c
batman-adv: Fix typos and grammar in documentation
2020-06-26 10:36:30 +02:00
tvlv.h
batman-adv: Update copyright years for 2020
2020-01-01 00:00:33 +01:00
types.h
batman-adv: types.h: delete duplicated words
2020-08-18 19:39:53 +02:00