On Sat, 2016-04-02 at 09:57 +0800, Herbert Xu wrote:
> Eric Dumazet <eric.duma...@gmail.com> wrote:
> >
> > I do not particularly care, but it is worth mentioning that GRO+TSO
> > would not be idempotent anymore.
> 
> We could easily fix that by adding a feature bit to control this,
> something like SKB_GSO_TCP_FIXEDID.

I understood the patch allowed to aggregate 4 segments having

ID=12   ID=40   ID=80  ID=1000

-> resulting GRO packet with 4 segments and ID=12.  TSO would generate
12,13,14,15   or 12,12,12,12 with your flag ?

(Before the patch no aggregation took place and exact same packets were
forwarded with 12, 40, 80, 1000)

As I said, I am not sure we should care :)



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