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.
Fixes: 25f854197abc ("net/dpaa: support jumbo frames")
Signed-off-by: Steve Yang <stevex.y...@intel.com>
---
drivers/net/dpaa/dpaa_ethdev.c | 2 +-
drivers/net/dpaa/dpaa_ethdev.h | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c
index f00279e004..0c87c136d7 100644
--- a/drivers/net/dpaa/dpaa_ethdev.c
+++ b/drivers/net/dpaa/dpaa_ethdev.c
@@ -184,7 +184,7 @@ dpaa_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
return -EINVAL;
}
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (frame_size > DPAA_ETH_MAX_LEN)
dev->data->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
else
diff --git a/drivers/net/dpaa/dpaa_ethdev.h b/drivers/net/dpaa/dpaa_ethdev.h
index 659bceb467..a858b1372c 100644
--- a/drivers/net/dpaa/dpaa_ethdev.h
+++ b/drivers/net/dpaa/dpaa_ethdev.h
@@ -51,6 +51,10 @@
#define VLAN_TAG_SIZE 4 /** < Vlan Header Length */
#endif
+#define DPAA_ETH_MAX_LEN (RTE_ETHER_MTU + \
+ RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN + \
+ VLAN_TAG_SIZE)
+
/* PCD frame queues */
#define DPAA_DEFAULT_NUM_PCD_QUEUES 1
#define DPAA_VSP_PROFILE_MAX_NUM 8
--
2.17.1
