linux-stable/net
Felix Fietkau 6db6f0eae6 bridge: multicast to unicast
Implements an optional, per bridge port flag and feature to deliver
multicast packets to any host on the according port via unicast
individually. This is done by copying the packet per host and
changing the multicast destination MAC to a unicast one accordingly.

multicast-to-unicast works on top of the multicast snooping feature of
the bridge. Which means unicast copies are only delivered to hosts which
are interested in it and signalized this via IGMP/MLD reports
previously.

This feature is intended for interface types which have a more reliable
and/or efficient way to deliver unicast packets than broadcast ones
(e.g. wifi).

However, it should only be enabled on interfaces where no IGMPv2/MLDv1
report suppression takes place. This feature is disabled by default.

The initial patch and idea is from Felix Fietkau.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
[linus.luessing@c0d3.blue: various bug + style fixes, commit message]
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24 12:39:52 -05:00
..
6lowpan 6lowpan: use rb_entry() 2017-01-22 16:46:13 -05:00
9p IB/core: add support to create a unsafe global rkey to ib_create_pd 2016-09-23 13:47:44 -04:00
802 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
8021q net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
appletalk
atm net: atm: Fix warnings in net/atm/lec.c when !CONFIG_PROC_FS 2016-12-28 15:11:32 -05:00
ax25 ax25: Fix segfault after sock connection timeout 2017-01-16 14:39:58 -05:00
batman-adv net: Remove usage of net_device last_rx member 2017-01-18 17:22:49 -05:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-12-16 10:24:44 -08:00
bridge bridge: multicast to unicast 2017-01-24 12:39:52 -05:00
caif net: caif: Remove unused stats member from struct chnl_net 2017-01-19 11:45:21 -05:00
can ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
ceph libceph: remove now unused finish_request() wrapper 2016-12-14 22:39:08 +01:00
core net: remove duplicate code. 2017-01-20 12:22:25 -05:00
dcb net: dcb: set error code on failures 2016-12-03 23:54:25 -05:00
dccp inet: drop ->bind_conflict 2017-01-18 13:04:28 -05:00
decnet Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
dns_resolver
dsa net: dsa: Remove hwmon support 2017-01-20 14:42:51 -05:00
ethernet net: make default TX queue length a defined constant 2016-11-07 20:15:55 -05:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
ieee802154 Makefile: drop -D__CHECK_ENDIAN__ from cflags 2016-12-16 00:13:43 +02:00
ipv4 Introduce a sysctl that modifies the value of PROT_SOCK. 2017-01-24 12:10:51 -05:00
ipv6 Introduce a sysctl that modifies the value of PROT_SOCK. 2017-01-24 12:10:51 -05:00
ipx ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
irda Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
iucv net/af_iucv: don't use paged skbs for TX on HiperSockets 2017-01-10 21:08:29 -05:00
kcm Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-10-07 15:36:58 -07:00
key netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
l2tp net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
l3mdev
lapb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
llc net: fix sleeping for sk_wait_event() 2016-11-14 13:17:21 -05:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-17 15:19:37 -05:00
mac802154 ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
mpls mpls: Packet stats 2017-01-17 14:38:43 -05:00
ncsi net/ncsi: Improve HNCDSC AEN handler 2016-10-20 11:23:08 -04:00
netfilter Introduce a sysctl that modifies the value of PROT_SOCK. 2017-01-24 12:10:51 -05:00
netlabel netlabel: add CALIPSO to the list of built-in protocols 2017-01-06 22:20:45 -05:00
netlink netlink: do not enter direct reclaim from netlink_trim() 2017-01-16 13:39:35 -05:00
netrom
nfc genetlink: mark families as __ro_after_init 2016-10-27 16:16:09 -04:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-17 15:19:37 -05:00
packet packet: pdiag_put_ring() should return TX_RING info for TPACKET_V3 2017-01-10 21:02:42 -05:00
phonet netns: make struct pernet_operations::id unsigned int 2016-11-18 10:59:15 -05:00
qrtr net: qrtr: Mark 'buf' as little endian 2017-01-10 20:45:04 -05:00
rds RDS: validate the requested traces user input against max supported 2017-01-06 22:14:26 -05:00
rfkill rfkill: Add rfkill-any LED trigger 2017-01-09 11:40:33 +01:00
rose Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
rxrpc rxrpc: Allow listen(sock, 0) to be used to disable listening 2017-01-09 11:10:02 +00:00
sched fq_codel: Avoid regenerating skb flow hash unless necessary 2017-01-20 12:15:14 -05:00
sctp Introduce a sysctl that modifies the value of PROT_SOCK. 2017-01-24 12:10:51 -05:00
smc smc: ETH_ALEN as memcpy length for mac addresses 2017-01-12 09:47:01 -05:00
strparser strparser: Propagate correct error code in strp_recv() 2016-10-12 01:51:49 -04:00
sunrpc svcrdma: avoid duplicate dma unmapping during error recovery 2017-01-12 16:14:47 -05:00
switchdev Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-10-30 12:42:58 -04:00
tipc tipc: make replicast a user selectable option 2017-01-20 12:10:17 -05:00
unix Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-17 20:17:04 -08:00
wimax genetlink: mark families as __ro_after_init 2016-10-27 16:16:09 -04:00
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-17 15:19:37 -05:00
x25 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
xfrm ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
compat.c net: Assert at build time the assumptions we make about the CMSG header. 2017-01-04 13:24:19 -05:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-11 14:43:39 -05:00
Makefile smc: establish new socket family 2017-01-09 16:07:38 -05:00
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-11 14:43:39 -05:00
sysctl_net.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2016-10-06 09:52:23 -07:00