The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition,
but the Ether overhead is larger than 18 when it supports VLAN tag.
That will cause the jumbo flag rx offload is wrong when MTU size is
'RTE_ETHER_MTU'.
This fix will change the boundary condition with 'RTE_ETHER_MTU' and
overhead, that perhaps impacts the cases of the jumbo frame related.
Fixes: e16408499412 ("net/dpaa2: configure jumbo frames")
Cc: Hemant Agrawal <hemant.agra...@nxp.com>
Cc: Sachin Saxena <sachin.sax...@oss.nxp.com>
Acked-by: Hemant Agrawal <hemant.agra...@nxp.com>
Signed-off-by: Steve Yang <stevex.y...@intel.com>
---
drivers/net/dpaa2/dpaa2_ethdev.c | 2 +-
drivers/net/dpaa2/dpaa2_ethdev.h | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index ab6863300e..6f38da3cce 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -1420,7 +1420,7 @@ dpaa2_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
if (mtu < RTE_ETHER_MIN_MTU || frame_size > DPAA2_MAX_RX_PKT_LEN)
return -EINVAL;
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (frame_size > DPAA2_ETH_MAX_LEN)
dev->data->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
else
diff --git a/drivers/net/dpaa2/dpaa2_ethdev.h b/drivers/net/dpaa2/dpaa2_ethdev.h
index 8d82f74684..cacb11bd3e 100644
--- a/drivers/net/dpaa2/dpaa2_ethdev.h
+++ b/drivers/net/dpaa2/dpaa2_ethdev.h
@@ -26,6 +26,10 @@
#define DPAA2_RX_DEFAULT_NBDESC 512
+#define DPAA2_ETH_MAX_LEN (RTE_ETHER_MTU + \
+ RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \
+ VLAN_TAG_SIZE)
+
/*default tc to be used for ,congestion, distribution etc configuration. */
#define DPAA2_DEF_TC 0
--
2.17.1
