linux-kernel - Re: [PATCH net] net: mvpp2: Fix TCAM filter reserved range

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Message-Id: <20180416.100407.1760752634367706398.davem@davemloft.net>
Date:   Mon, 16 Apr 2018 10:04:07 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     maxime.chevallier@...tlin.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        antoine.tenart@...tlin.com, thomas.petazzoni@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, stefanc@...vell.com, ymarkman@...vell.com,
        mw@...ihalf.com
Subject: Re: [PATCH net] net: mvpp2: Fix TCAM filter reserved range

From: Maxime Chevallier <maxime.chevallier@...tlin.com>
Date: Mon, 16 Apr 2018 10:07:23 +0200

> Marvell's PPv2 controller has a Packet Header parser, which uses a
> fixed-size TCAM array of filter entries.
> 
> The mvpp2 driver reserves some ranges among the 256 TCAM entries to
> perform MAC and VID filtering. The rest of the TCAM ids are freely usable
> for other features, such as IPv4 proto matching.
> 
> This commit fixes the MVPP2_PE_LAST_FREE_TID define that sets the end of
> the "free range", which included the MAC range. This could therefore allow
> some other features to use entries dedicated to MAC filtering,
> lowering the number of unicast/multicast addresses that could be allowed
> before switching to promiscuous mode.
> 
> Fixes: 10fea26ce2aa ("net: mvpp2: Add support for unicast filtering")
> Signed-off-by: Maxime Chevallier <maxime.chevallier@...tlin.com>

Applied, thanks.