examples/vhost: fix vlan offload

The following commit break vm2vm hard mode test cases:
commit db4014f2b65cb31bf ("use factorized default Rx/Tx configuration")

Investigation show that it needs enabling vlan offload since it is turn off
by default in some drivers, and Tx need it, especially when vm2vm is in hard mode.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
Tested-by: Jingguo Fu <jingguox.fu@intel.com>

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index 93319102d7a29489822686baeadfa8b98af5d728..04f01182d0d3274fd9789078ab7ae07e0818d5cc 100644 (file)
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -390,6 +390,9 @@ port_init(uint8_t port)
        txconf = &dev_info.default_txconf;
        rxconf->rx_drop_en = 1;
 
+       /* Enable vlan offload */
+       txconf->txq_flags &= ~ETH_TXQ_FLAGS_NOVLANOFFL;
+
        /*
         * Zero copy defers queue RX/TX start to the time when guest
         * finishes its startup and packet buffers from that guest are