i40e: fix max frame size

In FreeBsd driver, the max frame size is changed to MTU, but not
keep the default value defined in DataSheet. When DPDK runs on that
NIC, the configured value is not expected.
This patch sets the max frame size to default when initialization.

Fixes: 4861cde46116 ("i40e: new poll mode driver")

Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 22b240c..bf6220d 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -919,6 +919,11 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
         */
        i40e_add_tx_flow_control_drop_filter(pf);
 
+       /* Set the max frame size to 0x2600 by default,
+        * in case other drivers changed the default value.
+        */
+       i40e_aq_set_mac_config(hw, I40E_FRAME_SIZE_MAX, TRUE, 0, NULL);
+
        /* initialize mirror rule list */
        TAILQ_INIT(&pf->mirror_list);