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author | Patrick McHardy <kaber@trash.net> | 2010-04-13 05:03:23 +0000 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-04-13 14:49:34 -0700 |
commit | f0ad0860d01e47a3ffd220564c5c653b3afbe962 (patch) | |
tree | 91b69423f472b934daa2c18ae3b7ba065b7c7898 /include/linux/fib_rules.h | |
parent | 0c12295a741d3186987f96f518cfbdaf01abb087 (diff) | |
download | op-kernel-dev-f0ad0860d01e47a3ffd220564c5c653b3afbe962.zip op-kernel-dev-f0ad0860d01e47a3ffd220564c5c653b3afbe962.tar.gz |
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 'include/linux/fib_rules.h')
-rw-r--r-- | include/linux/fib_rules.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fib_rules.h b/include/linux/fib_rules.h index 405e411..04a3976 100644 --- a/include/linux/fib_rules.h +++ b/include/linux/fib_rules.h @@ -21,6 +21,7 @@ #define FIB_RULES_IPV4 AF_INET #define FIB_RULES_IPV6 AF_INET6 #define FIB_RULES_DECNET AF_DECnet +#define FIB_RULES_IPMR 128 struct fib_rule_hdr { __u8 family; |