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authorPatrick McHardy <kaber@trash.net>2010-04-13 05:03:23 +0000
committerDavid S. Miller <davem@davemloft.net>2010-04-13 14:49:34 -0700
commitf0ad0860d01e47a3ffd220564c5c653b3afbe962 (patch)
tree91b69423f472b934daa2c18ae3b7ba065b7c7898 /net/ipv4/Kconfig
parent0c12295a741d3186987f96f518cfbdaf01abb087 (diff)
downloadlinux-f0ad0860d01e47a3ffd220564c5c653b3afbe962.tar.bz2
ipv4: ipmr: support multiple tables
This patch adds support for multiple independant multicast routing instances, named "tables". Userspace multicast routing daemons can bind to a specific table instance by issuing a setsockopt call using a new option MRT_TABLE. The table number is stored in the raw socket data and affects all following ipmr setsockopt(), getsockopt() and ioctl() calls. By default, a single table (RT_TABLE_DEFAULT) is created with a default routing rule pointing to it. Newly created pimreg devices have the table number appended ("pimregX"), with the exception of devices created in the default table, which are named just "pimreg" for compatibility reasons. Packets are directed to a specific table instance using routing rules, similar to how regular routing rules work. Currently iif, oif and mark are supported as keys, source and destination addresses could be supported additionally. Example usage: - bind pimd/xorp/... to a specific table: uint32_t table = 123; setsockopt(fd, IPPROTO_IP, MRT_TABLE, &table, sizeof(table)); - create routing rules directing packets to the new table: # ip mrule add iif eth0 lookup 123 # ip mrule add oif eth0 lookup 123 Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/Kconfig')
-rw-r--r--net/ipv4/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index c9a1c68767ff..be597749c385 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -250,6 +250,20 @@ config IP_MROUTE
<file:Documentation/networking/multicast.txt>. If you haven't heard
about it, you don't need it.
+config IP_MROUTE_MULTIPLE_TABLES
+ bool "IP: multicast policy routing"
+ depends on IP_ADVANCED_ROUTER
+ select FIB_RULES
+ help
+ Normally, a multicast router runs a userspace daemon and decides
+ what to do with a multicast packet based on the source and
+ destination addresses. If you say Y here, the multicast router
+ will also be able to take interfaces and packet marks into
+ account and run multiple instances of userspace daemons
+ simultaneously, each one handling a single table.
+
+ If unsure, say N.
+
config IP_PIMSM_V1
bool "IP: PIM-SM version 1 support"
depends on IP_MROUTE