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authorFelix Fietkau <nbd@openwrt.org>2014-07-24 09:19:37 +0000
committerFelix Fietkau <nbd@openwrt.org>2014-07-24 09:19:37 +0000
commitea76a0b78e1ae8b86dac3b8acb0af95fcf800899 (patch)
tree236d54837bd7374b7c1f023794757c3a1aa2d924 /target
parent5206b2dac0ea82f15df649584d643dac1ac03727 (diff)
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kernel: annotate bridge multicast backport patch with upstream commits
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 41819
Diffstat (limited to 'target')
-rw-r--r--target/linux/generic/patches-3.10/070-net_bridge_backports.patch125
1 files changed, 125 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.10/070-net_bridge_backports.patch b/target/linux/generic/patches-3.10/070-net_bridge_backports.patch
index 3edc2ca..f303c3a 100644
--- a/target/linux/generic/patches-3.10/070-net_bridge_backports.patch
+++ b/target/linux/generic/patches-3.10/070-net_bridge_backports.patch
@@ -1,3 +1,128 @@
+commit 3c3769e63301fd92fcaf51870c371583dd0282ce
+Author: Linus Lüssing <linus.luessing@web.de>
+Date: Wed Sep 4 02:13:39 2013 +0200
+
+ bridge: apply multicast snooping to IPv6 link-local, too
+
+ The multicast snooping code should have matured enough to be safely
+ applicable to IPv6 link-local multicast addresses (excluding the
+ link-local all nodes address, ff02::1), too.
+
+ Signed-off-by: Linus Lüssing <linus.luessing@web.de>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
+commit 8fad9c39f31f9ed7bf3526c43a4537b2fcf1a5d5
+Author: Linus Lüssing <linus.luessing@web.de>
+Date: Wed Sep 4 02:13:38 2013 +0200
+
+ bridge: prevent flooding IPv6 packets that do not have a listener
+
+ Currently if there is no listener for a certain group then IPv6 packets
+ for that group are flooded on all ports, even though there might be no
+ host and router interested in it on a port.
+
+ With this commit they are only forwarded to ports with a multicast
+ router.
+
+ Just like commit bd4265fe36 ("bridge: Only flood unregistered groups
+ to routers") did for IPv4, let's do the same for IPv6 with the same
+ reasoning.
+
+ Signed-off-by: Linus Lüssing <linus.luessing@web.de>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
+commit cc0fdd802859eaeb00e1c87dbb655594bed2844c
+Author: Linus Lüssing <linus.luessing@web.de>
+Date: Fri Aug 30 17:28:17 2013 +0200
+
+ bridge: separate querier and query timer into IGMP/IPv4 and MLD/IPv6 ones
+
+ Currently we would still potentially suffer multicast packet loss if there
+ is just either an IGMP or an MLD querier: For the former case, we would
+ possibly drop IPv6 multicast packets, for the latter IPv4 ones. This is
+ because we are currently assuming that if either an IGMP or MLD querier
+ is present that the other one is present, too.
+
+ This patch makes the behaviour and fix added in
+ "bridge: disable snooping if there is no querier" (b00589af3b04)
+ to also work if there is either just an IGMP or an MLD querier on the
+ link: It refines the deactivation of the snooping to be protocol
+ specific by using separate timers for the snooped IGMP and MLD queries
+ as well as separate timers for our internal IGMP and MLD queriers.
+
+ Signed-off-by: Linus Lüssing <linus.luessing@web.de>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
+commit b00589af3b04736376f24625ab0b394642e89e29
+Author: Linus Lüssing <linus.luessing@web.de>
+Date: Thu Aug 1 01:06:20 2013 +0200
+
+ bridge: disable snooping if there is no querier
+
+ If there is no querier on a link then we won't get periodic reports and
+ therefore won't be able to learn about multicast listeners behind ports,
+ potentially leading to lost multicast packets, especially for multicast
+ listeners that joined before the creation of the bridge.
+
+ These lost multicast packets can appear since c5c23260594
+ ("bridge: Add multicast_querier toggle and disable queries by default")
+ in particular.
+
+ With this patch we are flooding multicast packets if our querier is
+ disabled and if we didn't detect any other querier.
+
+ A grace period of the Maximum Response Delay of the querier is added to
+ give multicast responses enough time to arrive and to be learned from
+ before disabling the flooding behaviour again.
+
+ Signed-off-by: Linus Lüssing <linus.luessing@web.de>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
+commit 6b7df111ece130fa979a0c4f58e53674c1e47d3e
+Author: Cong Wang <amwang@redhat.com>
+Date: Tue May 21 21:52:56 2013 +0000
+
+ bridge: send query as soon as leave is received
+
+ Continue sending queries when leave is received if the user marks
+ it as a querier.
+
+ Cc: Herbert Xu <herbert@gondor.apana.org.au>
+ Cc: Stephen Hemminger <stephen@networkplumber.org>
+ Cc: "David S. Miller" <davem@davemloft.net>
+ Cc: Adam Baker <linux@baker-net.org.uk>
+ Signed-off-by: Cong Wang <amwang@redhat.com>
+ Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
+commit 1c8ad5bfa2be5025b0c81e3c2decd0574d453ab1
+Author: Cong Wang <amwang@redhat.com>
+Date: Tue May 21 21:52:54 2013 +0000
+
+ bridge: use the bridge IP addr as source addr for querier
+
+ Quote from Adam:
+ "If it is believed that the use of 0.0.0.0
+ as the IP address is what is causing strange behaviour on other devices
+ then is there a good reason that a bridge rather than a router shouldn't
+ be the active querier? If not then using the bridge IP address and
+ having the querier enabled by default may be a reasonable solution
+ (provided that our querier obeys the election rules and shuts up if it
+ sees a query from a lower IP address that isn't 0.0.0.0). Just because a
+ device is the elected querier for IGMP doesn't appear to mean it is
+ required to perform any other routing functions."
+
+ And introduce a new troggle for it, as suggested by Herbert.
+
+ Suggested-by: Adam Baker <linux@baker-net.org.uk>
+ Cc: Herbert Xu <herbert@gondor.apana.org.au>
+ Cc: Stephen Hemminger <stephen@networkplumber.org>
+ Cc: "David S. Miller" <davem@davemloft.net>
+ Cc: Adam Baker <linux@baker-net.org.uk>
+ Signed-off-by: Cong Wang <amwang@redhat.com>
+ Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
+ Signed-off-by: David S. Miller <davem@davemloft.net>
+
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -67,7 +67,8 @@ netdev_tx_t br_dev_xmit(struct sk_buff *