Re: [OpenWrt-Devel] About IGMP snooping support
Hi, On 24 February 2013 06:18, hayate hayate...@gmail.com wrote: My router hardware has a AR8327 switch which is supposed to support hardware IGMP snooping, but it seems it doesn't work on my OpenWrt of trunk. I noted that in target/linux/generic/files/drivers/net/phy/ar8216.h there is a AR8327_FWD_CTRL1_IGMP defined but not used anywhere. And there is a config option CONFIG_BRIDGE_IGMP_SNOOPING in kernel config. Does these two affect this feature? How can I enable IGMP snooping in OpenWrt on my router IGMP snooping for switches has a slightly different meaning than IGMP snooing support in linux. For switches (also for AR8xxx) IGMP snooping means that any JOINS/LEAVES are redirected to the CPU port, so the CPU can setup/update the appropriate forwarding entries in the switch. So for this feature to work it requires a daemon capable of that, which currently doesn't exist. The IGMP snooping from linux does something like that already, but only for bridge interface members. That means that is able to prevent multicast traffic from leaking to wlan, but it does not have any influence to the individual switch ports. Jonas ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] About IGMP snooping support
Thank you Jonas, If I understand correctly, 1. If that kind of daemons exist, it can prevent multicast flood in the switch by setting proper rules 2. We can infer that if two switches are connected together, unless both of them support IGMP snooping, at least one of them would suffer multicast flood right? On Sun, Feb 24, 2013 at 7:42 PM, Jonas Gorski j...@openwrt.org wrote: Hi, On 24 February 2013 06:18, hayate hayate...@gmail.com wrote: My router hardware has a AR8327 switch which is supposed to support hardware IGMP snooping, but it seems it doesn't work on my OpenWrt of trunk. I noted that in target/linux/generic/files/drivers/net/phy/ar8216.h there is a AR8327_FWD_CTRL1_IGMP defined but not used anywhere. And there is a config option CONFIG_BRIDGE_IGMP_SNOOPING in kernel config. Does these two affect this feature? How can I enable IGMP snooping in OpenWrt on my router IGMP snooping for switches has a slightly different meaning than IGMP snooing support in linux. For switches (also for AR8xxx) IGMP snooping means that any JOINS/LEAVES are redirected to the CPU port, so the CPU can setup/update the appropriate forwarding entries in the switch. So for this feature to work it requires a daemon capable of that, which currently doesn't exist. The IGMP snooping from linux does something like that already, but only for bridge interface members. That means that is able to prevent multicast traffic from leaking to wlan, but it does not have any influence to the individual switch ports. Jonas ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
Re: [OpenWrt-Devel] About IGMP snooping support
On 24 February 2013 12:55, hayate hayate...@gmail.com wrote: Thank you Jonas, If I understand correctly, 1. If that kind of daemons exist, it can prevent multicast flood in the switch by setting proper rules 2. We can infer that if two switches are connected together, unless both of them support IGMP snooping, at least one of them would suffer multicast flood right? Yes, and yes. Also please don't top post. Jonas ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
[OpenWrt-Devel] About IGMP snooping support
My router hardware has a AR8327 switch which is supposed to support hardware IGMP snooping, but it seems it doesn't work on my OpenWrt of trunk. I noted that in target/linux/generic/files/drivers/net/phy/ar8216.h there is a AR8327_FWD_CTRL1_IGMP defined but not used anywhere. And there is a config option CONFIG_BRIDGE_IGMP_SNOOPING in kernel config. Does these two affect this feature? How can I enable IGMP snooping in OpenWrt on my router Thanks ___ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
