diff mbox series

[v1,12/12] net/thunderx: fix the jumbo frame flag condition for mtu set

Message ID 20201209031628.29572-13-stevex.yang@intel.com (mailing list archive)
State Superseded, archived
Delegated to: Ferruh Yigit
Headers
Series fix rx packets dropped issue |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-broadcom-Functional success Functional Testing PASS
ci/iol-testing success Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/travis-robot success Travis build: passed

Commit Message

Steve Yang Dec. 9, 2020, 3:16 a.m. UTC 
  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.yang@intel.com>
---
 drivers/net/thunderx/nicvf_ethdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

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;