[dpdk-dev] [PATCH] ethdev: fix MTU setup error

[Mallesh Koujalagi <malleshx.koujalagi@intel.com>]

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>
---
 drivers/net/null/rte_eth_null.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/null/rte_eth_null.c b/drivers/net/null/rte_eth_null.c
index 7cd5c71..5fc2e1a 100644
--- a/drivers/net/null/rte_eth_null.c
+++ b/drivers/net/null/rte_eth_null.c
@@ -278,7 +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,
 		struct rte_eth_dev_info *dev_info)
@@ -465,6 +469,7 @@ 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,
-- 
2.7.4