On Tue, Apr 16, 2019 at 02:18:36PM +0100, Toke Høiland-Jørgensen wrote:
>
> > The congestion control happens at two levels. You are right that the
> > socket buffer acts as one limit. However, other applications may also
> > rely on the TX queue being full as the throttle (by setting a
> > sufficiently large socket buffer size).
>
> Do you happen to have an example of an application that does this that
> could be used for testing? :)
Have a look at
commit 6ce9e7b5fe3195d1ae6e3a0753d4ddcac5cd699e
Author: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Date: Wed Sep 2 18:05:33 2009 -0700
ip: Report qdisc packet drops
You should be able to do a UDP flood while setting IP_RECVERR to
detect the packet drop due to a full queue which AFAICS will never
happen with the current mac80211 setup.
Cheers,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
