net/null: support MTU update

NULL device is failed to attach ovs, reported operation not supported
and configuration failed.

To attach ovs:
$VSCTL add-port ovs-br dpdk1 -- set Interface dpdk1 type=dpdk \
        options:dpdk-devargs=eth_null0,size=64,copy=1

Signed-off-by: Mallesh Koujalagi <malleshx.koujalagi@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c
index 7cd5c71..9385ffd 100644 (file)
--- a/drivers/net/null/rte_eth_null.c
+++ b/drivers/net/null/rte_eth_null.c
@@ -278,6 +278,11 @@ eth_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
        return 0;
 }
 
+static int
+eth_mtu_set(struct rte_eth_dev *dev __rte_unused, uint16_t mtu __rte_unused)
+{
+       return 0;
+}
 
 static void
 eth_dev_info(struct rte_eth_dev *dev,
@@ -465,6 +470,7 @@ static const struct eth_dev_ops ops = {
        .tx_queue_setup = eth_tx_queue_setup,
        .rx_queue_release = eth_queue_release,
        .tx_queue_release = eth_queue_release,
+       .mtu_set = eth_mtu_set,
        .link_update = eth_link_update,
        .stats_get = eth_stats_get,
        .stats_reset = eth_stats_reset,