diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/generic/patches-3.10/070-net_bridge_backports.patch | 125 |
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 3edc2cab5e..f303c3a094 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 * |