netdev - RE: [EXT] Re: [net-next PATCH V3] octeontx2-pf: Add egress PFC support

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Message-ID: <SJ0PR18MB52162AE97BF2AAAF06ECECD6DB759@SJ0PR18MB5216.namprd18.prod.outlook.com>
Date:   Fri, 26 Aug 2022 05:23:33 +0000
From:   Suman Ghosh <sumang@...vell.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     Sunil Kovvuri Goutham <sgoutham@...vell.com>,
        Linu Cherian <lcherian@...vell.com>,
        Geethasowjanya Akula <gakula@...vell.com>,
        Jerin Jacob Kollanukkaran <jerinj@...vell.com>,
        Hariprasad Kelam <hkelam@...vell.com>,
        Subbaraya Sundeep Bhatta <sbhatta@...vell.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [EXT] Re: [net-next PATCH V3] octeontx2-pf: Add egress PFC
 support


>External Email
>
>----------------------------------------------------------------------
>On Thu, 25 Aug 2022 10:12:42 +0530 Suman Ghosh wrote:
>> As of now all transmit queues transmit packets out of same scheduler
>> queue hierarchy. Due to this PFC frames sent by peer are not handled
>> properly, either all transmit queues are backpressured or none.
>> To fix this when user enables PFC for a given priority map relavant
>> transmit queue to a different scheduler queue hierarcy, so that
>> backpressure is applied only to the traffic egressing out of that TXQ.
>
>Does not build at all now:
>
>ERROR: modpost: drivers/net/ethernet/marvell/octeontx2/nic/rvu_nicvf:
>'otx2_pfc_txschq_update' exported twice. Previous export was in
>drivers/net/ethernet/marvell/octeontx2/nic/rvu_nicpf.ko
>ERROR: modpost: "otx2_txschq_config"
>[drivers/net/ethernet/marvell/octeontx2/nic/rvu_nicvf.ko] undefined!
>ERROR: modpost: "otx2_smq_flush"
>[drivers/net/ethernet/marvell/octeontx2/nic/rvu_nicvf.ko] undefined!
[Suman] Sorry my bad. Updated the patch with the fix.