Re: [PATCH rdma-next 06/31] IB/ipoib: Avoid memory leak if neigh destination was changed

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On Thu, Nov 16, 2017 at 06:28:42PM +0100, Håkon Bugge wrote:

> > It override only the DGID in the record, and that for IPoIB uses
> > only, not the ah which is the important.  otherwise if the host
> > will re-ask again for that DGID it will not be found in IPoIB
> > database, and new record will be created and so on till the end of
> > all the device memory.
> 
> Isn’t the correct solution to mask away the 16-bit subnet prefix
> when looking up a unicast DGID in the database?

No, the SA can also alter the GUID portion to point to a GUID
alias. The spec envisioned using this for global multipathing.

Jason
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