cvs commit: src/sys/conf files options src/sys/net radix.c radix.h route.c route.h rtsock.c src/sys/netinet in_proto.c ip_output.c src/sys/netinet6 in6_proto.c in6_src.c nd6_nbr.c

[Pyun YongHyeon]

On Sun, Apr 13, 2008 at 05:45:14AM +0000, Qing Li wrote:
 > qingli      2008-04-13 05:45:14 UTC
 > 
 >   FreeBSD src repository
 > 
 >   Modified files:
 >     sys/conf             files options 
 >     sys/net              radix.c radix.h route.c route.h rtsock.c 
 >     sys/netinet          in_proto.c ip_output.c 
 >     sys/netinet6         in6_proto.c in6_src.c nd6_nbr.c 
 >   Log:
 >   This patch provides the back end support for equal-cost multi-path
 >   (ECMP) for both IPv4 and IPv6. Previously, multipath route insertion
 >   is disallowed. For example,
 >   
 >           route add -net 192.103.54.0/24 10.9.44.1
 >           route add -net 192.103.54.0/24 10.9.44.2
 >   
 >   The second route insertion will trigger an error message of
 >   "add net 192.103.54.0/24: gateway 10.2.5.2: route already in table"
 >   
 >   Multiple default routes can also be inserted. Here is the netstat
 >   output:
 >   
 >   default         10.2.5.1        UGS     0       3074    bge0 =>
 >   default         10.2.5.2        UGS     0       0       bge0
 >   
 >   When multipath routes exist, the "route delete" command requires
 >   a specific gateway to be specified or else an error message would
 >   be displayed. For example,
 >   
 >           route delete default
 >   
 >   would fail and trigger the following error message:
 >   
 >   "route: writing to routing socket: No such process"
 >   "delete net default: not in table"
 >   
 >   On the other hand,
 >   
 >           route delete default 10.2.5.2
 >   
 >   would be successful: "delete net default: gateway 10.2.5.2"
 >   
 >   One does not have to specify a gateway if there is only a single
 >   route for a particular destination.
 >   
 >   I need to perform more testings on address aliases and multiple
 >   interfaces that have the same IP prefixes. This patch as it
 >   stands today is not yet ready for prime time. Therefore, the ECMP
 >   code fragments are fully guarded by the RADIX_MPATH macro.
 >   Include the "options  RADIX_MPATH" in the kernel configuration
 >   to enable this feature.
 >   
 >   Reviewed by:    robert, sam, gnn, julian, kmacy
 >   

Nice work!

-- 
Regards,
Pyun YongHyeon