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Subject[net PATCH] octeontx2-pf: Fix pfc_alloc_status array overflow
Date
This patch addresses pfc_alloc_status array overflow occurring for
send queue index value greater than PFC priority. 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@marvell.com>
---
drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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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