The jumbo frame uses the 'RTE_ETHER_MAX_LEN' as boundary condition, but
the Ether overhead is larger than 18 when it supports dual VLAN tags.
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'.
Fixes: 65d9804edc05 ("net/thunderx: support MTU configuration")
Signed-off-by: Steve Yang <stevex.y...@intel.com>
---
drivers/net/thunderx/nicvf_ethdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/thunderx/nicvf_ethdev.c
b/drivers/net/thunderx/nicvf_ethdev.c
index b6bb05e500..a13ee960ec 100644
--- a/drivers/net/thunderx/nicvf_ethdev.c
+++ b/drivers/net/thunderx/nicvf_ethdev.c
@@ -176,7 +176,7 @@ nicvf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
(frame_size + 2 * VLAN_TAG_SIZE > buffsz * NIC_HW_MAX_SEGS))
return -EINVAL;
- if (frame_size > RTE_ETHER_MAX_LEN)
+ if (mtu > RTE_ETHER_MTU)
rxmode->offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
else
rxmode->offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;
--
2.17.1
