linux-kernel - Re: [EXT] Re: [PATCH] octeontx2-pf: Add egress PFC support

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Date:   Wed, 24 Aug 2022 14:33:38 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Suman Ghosh <sumang@...vell.com>
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>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [EXT] Re: [PATCH] octeontx2-pf: Add egress PFC support

> >> -	schq = hw->txschq_list[lvl][0];
> >> +#ifdef CONFIG_DCB
> >> +	if (txschq_for_pfc)
> >> +		schq = pfvf->pfc_schq_list[lvl][prio];
> >> +	else
> >> +#endif
> >
> >Please could you try to remove as many of these #ifdef CONFIG_DCB as
> >possible. It makes build testing less efficient at finding build
> >problems. Can you do:
> >
> >> +	if (IS_ENABLED(CONFIG_DCB) && txschq_for_pfc)
> >> +		schq = pfvf->pfc_schq_list[lvl][prio];
> >
> [Suman] I will restructured the code. But we cannot use pfvf->pfc_schq_list outside #ifdef CONFIG_DCB as these are defined under the 
> macro in otx2_common.h

So maybe add a getter and setter in otx2_common.h, which returns
-EOPNOTSUPP or similar when CONFIG_DCB is disabled?

	    Andrew