The XL710 requires that the Set MAC Config command be used to define the
maximum frame size in order for the Receive Oversize Count register
(GLPRT_ROC) to be incremented for packets received that are greater than
the MTU. Without this change, the XL710 will drop the oversized packets
without incrementing the corresponding counter.
Signed-off-by: Michael Bieniek <michaelbieniekdpdk at gmail.com>
---
drivers/net/i40e/i40e_ethdev.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 67778ba..c11c80b 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -9709,6 +9709,7 @@ static int
i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
{
struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
+ struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
struct rte_eth_dev_data *dev_data = pf->dev_data;
uint32_t frame_size = mtu + ETHER_HDR_LEN
+ ETHER_CRC_LEN + I40E_VLAN_TAG_SIZE;
@@ -9732,6 +9733,7 @@ i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
dev_data->dev_conf.rxmode.jumbo_frame = 0;
dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
+ i40e_aq_set_mac_config(hw, frame_size, TRUE, 0, NULL);
return ret;
}
--
2.4.11
