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octeontx2-pf: Fix pfc_alloc_status array overflow 

This patch addresses pfc_alloc_status array overflow occurring for
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: 99c969a83d ("octeontx2-pf: Add egress PFC support")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Suman Ghosh 2022-11-23 16:29:38 +05:30 committed by David S. Miller
parent cc3d2b5fc0
commit 32b931c86d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h
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@ -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