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[v4,21/22] net/nfp: fix the jumbo frame flag condition for mtu set

Message ID 20210118070428.36998-22-stevex.yang@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers show
Series fix rx packets dropped issue | expand


Context Check Description
ci/checkpatch success coding style OK

Commit Message

Steve Yang Jan. 18, 2021, 7:04 a.m. UTC
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

This fix will change the boundary condition with 'RTE_ETHER_MTU',
that perhaps impacts the cases of the jumbo frame related.

Fixes: d4a27a3b092a ("nfp: add basic features")

Cc: Heinrich Kuhn <heinrich.kuhn@netronome.com>

Signed-off-by: Steve Yang <stevex.yang@intel.com>
 drivers/net/nfp/nfp_net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series


diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
index 1608bf5ea1..9ea24e5bda 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -1508,7 +1508,7 @@  nfp_net_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 	/* switch to jumbo mode if needed */
-	if ((uint32_t)mtu > RTE_ETHER_MAX_LEN)
+	if ((uint32_t)mtu > RTE_ETHER_MTU)
 		dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
 		dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;