netdev - Re: [PATCH] sch_cake: Fix TC filter flow override and expand it to hosts as well

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Message-Id: <20180822.214035.2296047368518586541.davem@davemloft.net>
Date:   Wed, 22 Aug 2018 21:40:35 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     toke@...e.dk
Cc:     netdev@...r.kernel.org, cake@...ts.bufferbloat.net
Subject: Re: [PATCH] sch_cake: Fix TC filter flow override and expand it to
 hosts as well

From: Toke Høiland-Jørgensen <toke@...e.dk>
Date: Wed, 22 Aug 2018 12:29:43 +0200

> The TC filter flow mapping override completely skipped the call to
> cake_hash(); however that meant that the internal state was not being
> updated, which ultimately leads to deadlocks in some configurations. Fix
> that by passing the overridden flow ID into cake_hash() instead so it can
> react appropriately.
> 
> In addition, the major number of the class ID can now be set to override
> the host mapping in host isolation mode. If both host and flow are
> overridden (or if the respective modes are disabled), flow dissection and
> hashing will be skipped entirely; otherwise, the hashing will be kept for
> the portions that are not set by the filter.
> 
> Signed-off-by: Toke Høiland-Jørgensen <toke@...e.dk>

Applied.