Linux on System z Current & Future Technology - z/VM - IBM
Linux on System z Current & Future Technology - z/VM - IBM
Linux on System z Current & Future Technology - z/VM - IBM
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<strong>IBM</strong> <str<strong>on</strong>g>Linux</str<strong>on</strong>g> and <strong>Technology</strong> Center<strong>System</strong> z kernel features – Networking• Offload outbound checksumming (kernel 2.6.35)6.1 11.2– Move calculati<strong>on</strong> of checksum for n<strong>on</strong>-TSO packets from the driver to the OSAnetwork card• OSX/OSM CHPIDs for hybrid data network (kernel 2.6.35)– The OSA cards for the zBX Blade Center Extensi<strong>on</strong> will have a new CHPID type– Allows communicati<strong>on</strong> between zBX and <str<strong>on</strong>g>Linux</str<strong>on</strong>g> <strong>on</strong> <strong>System</strong> z• Tolerati<strong>on</strong> of optimized latency mode (kernel 2.6.35)– OSA devices in optimized latency mode can <strong>on</strong>ly serve a small number ofstacks / users. Print a helpful error message if the user limit is reached.– <str<strong>on</strong>g>Linux</str<strong>on</strong>g> does not exploit the optimized latency mode6.110.411.211.2• NAPI support for QDIO and QETH (kernel 2.6.36)– C<strong>on</strong>vert QETH to the NAPI interface, the “new” <str<strong>on</strong>g>Linux</str<strong>on</strong>g> networking API– NAPI allows for transparent GRO (generic receive offload)6.111.222© 2012 <strong>IBM</strong> Corporati<strong>on</strong>
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