[net PATCH] octeontx2-pf: Fix pfc_alloc_status array overflow

[Suman Ghosh]

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@xxxxxxxxxxx>
---
 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