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

[Coleman Kane]

On Mon, 2008-04-14 at 09:33 +0900, Pyun YongHyeon wrote:
> 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!
> 

Congrats! Thank you for this.

-- 
Coleman
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