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net: rtnetlink: decouple rtnetlink address families from real address families

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Decouple rtnetlink address families from real address families in socket.h to
be able to add rtnetlink interfaces to code that is not a real address family
without increasing AF_MAX/NPROTO.

This will be used to add support for multicast route dumping from all tables
as the proc interface can't be extended to support anything but the main table
without breaking compatibility.

This partialy undoes the patch to introduce independant families for routing
rules and converts ipmr routing rules to a new rtnetlink family. Similar to
that patch, values up to 127 are reserved for real address families, values
above that may be used arbitrarily.

Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Patrick McHardy 2010-04-26 16:02:05 +02:00
parent 3d0c9c4eb2
commit 25239cee7e
7 changed files with 17 additions and 19 deletions
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6
include/linux/rtnetlink.h
View file

@ -7,6 +7,12 @@
#include <linux/if_addr.h>
#include <linux/neighbour.h>
/* rtnetlink families. Values up to 127 are reserved for real address
* families, values above 128 may be used arbitrarily.
*/
#define RTNL_FAMILY_IPMR 128
#define RTNL_FAMILY_MAX 128
/****
* Routing/neighbour discovery messages.
****/