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Message-ID: <SJ0PR18MB52165D5FA51E433CAD0E8CBBDB739@SJ0PR18MB5216.namprd18.prod.outlook.com> Date: Wed, 24 Aug 2022 05:57:00 +0000 From: Suman Ghosh <sumang@...vell.com> To: Andrew Lunn <andrew@...n.ch> 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 Please see inline Regards, Suman >-----Original Message----- >From: Andrew Lunn <andrew@...n.ch> >Sent: Tuesday, August 23, 2022 9:21 PM >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; edumazet@...gle.com; kuba@...nel.org; >pabeni@...hat.com; netdev@...r.kernel.org; linux-kernel@...r.kernel.org >Subject: [EXT] Re: [PATCH] octeontx2-pf: Add egress PFC support > >External Email > >---------------------------------------------------------------------- >> -int otx2_txschq_config(struct otx2_nic *pfvf, int lvl) >> +int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool >> +txschq_for_pfc) >> { >> struct otx2_hw *hw = &pfvf->hw; >> struct nix_txschq_config *req; >> @@ -602,7 +602,13 @@ int otx2_txschq_config(struct otx2_nic *pfvf, int >lvl) >> req->lvl = lvl; >> req->num_regs = 1; >> >> - 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 >> +#ifdef CONFIG_DCB >> +int otx2_pfc_txschq_config(struct otx2_nic *pfvf) { >> + u8 pfc_en, pfc_bit_set; >> + int prio, lvl, err; >> + >> + pfc_en = pfvf->pfc_en; >> + for (prio = 0; prio < NIX_PF_PFC_PRIO_MAX; prio++) { >> + pfc_bit_set = pfc_en & (1 << prio); >> + > >Maybe put all of this into a file of its own, and provide stubs for when >it is not enabled? [Suman] I will move these APIs to otx2_dcbnl.c. This file will be compiled when CONFIG_DCB is enabled. > > Andrew
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