[openib-general] [PATCH for-2.6.18] IB/cma: option to limitMTU to 1K

Sean Hefty mshefty at ichips.intel.com
Wed Sep 13 12:22:30 PDT 2006


Michael S. Tsirkin wrote:
> I think we can do that without breaking IPoIB.
> IPoIB needs mtu >= 1K. IPoIB sets mtu selector to >= 2K.
> I am talking about users that do not set mtu selector.

The ipoib spec requires support for a 2k MTU, but allows support for smaller 
MTUs.  I agree that if the ipoib implementation requires an MTU of 2k, then it 
should be setting this as part of its query request.

- Sean




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