linux-kernel - RE: [EXT] Re: [net-next PATCH V3 02/12] octeontx2-af: Exact match support

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Message-ID: <MWHPR1801MB19186717B8C966ED8B5F9928D3829@MWHPR1801MB1918.namprd18.prod.outlook.com>
Date:   Fri, 8 Jul 2022 04:48:12 +0000
From:   Ratheesh Kannoth <rkannoth@...vell.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>
Subject: RE: [EXT] Re: [net-next PATCH V3 02/12] octeontx2-af: Exact match
 support

-----Original Message-----
From: Jakub Kicinski <kuba@...nel.org> 
Sent: Friday, July 8, 2022 6:23 AM
To: Ratheesh Kannoth <rkannoth@...vell.com>
Cc: netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Sunil Kovvuri Goutham <sgoutham@...vell.com>; davem@...emloft.net; edumazet@...gle.com; pabeni@...hat.com
Subject: [EXT] Re: [net-next PATCH V3 02/12] octeontx2-af: Exact match support

External Email

----------------------------------------------------------------------
On Thu, 7 Jul 2022 13:03:43 +0530 Ratheesh Kannoth wrote:
> CN10KB silicon has support for exact match table. This table can be 
> used to match maimum 64 bit value of KPU parsed output.
> Hit/non hit in exact match table can be used as a KEX key to NPC mcam.
> 
> This patch makes use of Exact match table to increase number of DMAC 
> filters supported. NPC  mcam is no more need for each of these DMAC 
> entries as will be populated in Exact match table.
> 
> This patch implements following
> 
> 1. Initialization of exact match table only for CN10KB.
> 2. Add/del/update interface function for exact match table.
> 
> Signed-off-by: Ratheesh Kannoth <rkannoth@...vell.com>

>Build with C=1 (i.e. with the sparse checker) we get:

>drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_hash.c:558:21: warning: dubious: x & !y

>could you figure out which one it is and if it can be muted?

Fixed.  Posted new patch. Thanks a lot for pointing it out.

-Ratheesh