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Date: Fri, 25 Nov 2022 15:58:34 +0100 From: Maciej Fijalkowski <maciej.fijalkowski@...el.com> To: Suman Ghosh <sumang@...vell.com> CC: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>, <sgoutham@...vell.com>, <sbhatta@...vell.com>, <jerinj@...vell.com>, <gakula@...vell.com>, <hkelam@...vell.com>, <lcherian@...vell.com>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [net PATCH V2] octeontx2-pf: Fix pfc_alloc_status array overflow On Wed, Nov 23, 2022 at 04:29:38PM +0530, Suman Ghosh wrote: > This patch addresses pfc_alloc_status array overflow occurring for Nit: use imperative mood > send queue index value greater than PFC priority. Queue index can be > greater than supported PFC priority for multiple scenarios (e.g. QoS, > during non zero SMQ allocation for a PF/VF). > In those scenarios the API should return default tx scheduler '0'. > This is causing mbox errors as otx2_get_smq_idx returing invalid smq value. > > Fixes: 99c969a83d82 ("octeontx2-pf: Add egress PFC support") > Signed-off-by: Suman Ghosh <sumang@...vell.com> > --- > Changes since v1: > - Updated commit message. > > drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com> > > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h > index 282db6fe3b08..67aa02bb2b85 100644 > --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h > @@ -884,7 +884,7 @@ static inline void otx2_dma_unmap_page(struct otx2_nic *pfvf, > static inline u16 otx2_get_smq_idx(struct otx2_nic *pfvf, u16 qidx) > { > #ifdef CONFIG_DCB > - if (pfvf->pfc_alloc_status[qidx]) > + if (qidx < NIX_PF_PFC_PRIO_MAX && pfvf->pfc_alloc_status[qidx]) > return pfvf->pfc_schq_list[NIX_TXSCH_LVL_SMQ][qidx]; > #endif > > -- > 2.25.1 >
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