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authorSuman Ghosh <sumang@marvell.com>2022-11-23 16:29:38 +0530
committerDavid S. Miller <davem@davemloft.net>2022-11-25 09:34:34 +0000
commit32b931c86d0aef4f3263de457f58d82e9cbae2a2 (patch)
treee5f143606a49fa06929b2a83b5e683f235a48475 /drivers
parentcc3d2b5fc0d6f8ad8a52da5ea679e5c2ec2adbd4 (diff)
downloadlinux-32b931c86d0aef4f3263de457f58d82e9cbae2a2.tar.bz2
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: 99c969a83d82 ("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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h2
1 files changed, 1 insertions, 1 deletions
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