The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition.
If 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 normalize the boundary condition with 'RTE_ETHER_MTU'
and overhead even though current overhead is 18.
Fixes: 254bd849b132 ("net/hinic: set jumbo frame offload flag")
Signed-off-by: Steve Yang <stevex.y...@intel.com>
---
drivers/net/hinic/hinic_pmd_ethdev.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/hinic/hinic_pmd_ethdev.c
b/drivers/net/hinic/hinic_pmd_ethdev.c
index 62642354cf..5a2c171099 100644
--- a/drivers/net/hinic/hinic_pmd_ethdev.c
+++ b/drivers/net/hinic/hinic_pmd_ethdev.c
@@ -75,6 +75,9 @@
#define HINIC_PKTLEN_TO_MTU(pktlen) \
((pktlen) - (ETH_HLEN + ETH_CRC_LEN))
+/* The max frame size with default MTU */
+#define HINIC_ETH_MAX_LEN (RTE_ETHER_MTU + ETH_HLEN + ETH_CRC_LEN)
+
/* lro numer limit for one packet */
#define HINIC_LRO_WQE_NUM_DEFAULT 8
@@ -1556,7 +1559,7 @@ static int hinic_dev_set_mtu(struct rte_eth_dev *dev,
uint16_t mtu)
/* update max frame size */
frame_size = HINIC_MTU_TO_PKTLEN(mtu);
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (frame_size > HINIC_ETH_MAX_LEN)
dev->data->dev_conf.rxmode.offloads |=
DEV_RX_OFFLOAD_JUMBO_FRAME;
else
--
2.17.1
