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net/nfp: fix jumbo frame flag condition for MTU set

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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 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: stable@dpdk.org

Signed-off-by: Steve Yang <stevex.yang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Steve Yang 2021-01-18 07:04:27 +00:00 committed by Ferruh Yigit
parent e542ab51ab
commit a36974f43c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/nfp/nfp_net.c
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@ -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;
else
dev->data->dev_conf.rxmode.offloads &= ~DEV_RX_OFFLOAD_JUMBO_FRAME;