[dpdk-users] vmxnet3 RX VLAN Strip offload incorrect behaviour

Padam Jeet Singh padam.singh at inventum.net
Tue Mar 27 08:31:22 CEST 2018


When configuring the vmxnet3 based ethernet device, the RX VLAN Strip offload does not work as it usually does with other real NICs which support this function.

When configuring with rxmode.hw_vlan_strip = 1, the ipackets statistic does not increase when a VLAN ether type frame is received on the port and it is also not received on queue RX.
However, when configuring rxmode.hw_vlan_strip = 0 ,the ipackets statistic increases as well as frames arrives with VLAN header.

Though calling  rte_eth_dev_set_vlan_offload(port, ETH_VLAN_STRIP_OFFLOAD) returns a success, however VLAN stripping on RX does not work.

TX VLAN INSERT offload on the other hand works just fine.

Is this a bug in vmxnet3 driver of dpdk?


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