On Fri, Jul 28, 2023 at 12:03:23PM +0200, Ard Biesheuvel wrote: > > Fair enough. But my point remains: this requires a lot of boilerplate > on the part of the driver, and it would be better if we could do this > in the acomp generic layer. Absolutely. If the hardware can't support allocate-as-you-go then this should very much go into the generic layer. > Does the IPcomp case always know the decompressed size upfront? No it doesn't know. Of course, we could optimise it because we know that in 99% cases, the packet is going to be less than 4K. But we need a safety-net for those weird jumbo packets. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
