On Wed, Feb 03, 2016 at 12:36:21PM +0100, Hannes Frederic Sowa wrote: > > Agreed that it feels like a hack, but a rather simple one. I would > consider this to be just a performance improvement. We certainly need > a slow-path when virtio drivers submit gso packets to the stack (and > already discussed with Hans). The sysctl can't help here. But without > the sysctl the packets would constantly hit the slow-path in case of > e.g. IPoIB and that would also be rather bad.
So you want to penalise every NIC in the system if just one of them is broken? This is insane. Just do the partial linearisation in that one driver that needs it and not only won't you have to penalise anyone else but you still get the best result for that driver that needs it. Besides, you have to implement the linearisation anyway because of virtualisation. Cheers, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
