[ofa-general] [PATCH 1/4] multicast multiplexing - definitions for new data types, and infrastructure functions

Or Gerlitz ogerlitz at voltaire.com
Mon Jul 20 03:03:51 PDT 2009


Slava Strebkov wrote:
> This thread covers implementation of compression multiple MGIDs to one MLID. The following groups of IP addresses will have same MLID (for all pkey):
> 1. FF12401bxxxx000000000000FFFFFFFF - All Nodes
> 2. FF12401bxxxx00000000000000000001 - All hosts
> 3. FF12401bffff0000000000000000004d - all Gateways
> 4. FF12401bxxxx00000000000000000002 - all routers
> 5. FF12601bxxxx000000000001ffxxxxxx - IPv6 SNM
>   
I think we better avoid compressing the pkey as well. Think what happens 
when a packet is sent to the all hosts and with your patch is routed to 
N partitions each one having M hosts, (N-1) * M hosts will generate 
invalid pkey trap! IB partitioning is a means to separate nodes, and 
here you attempt to enforce a violation...

Or.




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