Add MTU set operation for VF device.
Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
doc/guides/nics/features/txgbe_vf.ini | 1 +
drivers/net/txgbe/txgbe_ethdev_vf.c | 36 +++++++++++++++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/doc/guides/nics/features/txgbe_vf.ini
b/doc/guides/nics/features/txgbe_vf.ini
index 480af52bd..37a02c6e1 100644
--- a/doc/guides/nics/features/txgbe_vf.ini
+++ b/doc/guides/nics/features/txgbe_vf.ini
@@ -6,6 +6,7 @@
[Features]
Link status = Y
Rx interrupt = Y
+MTU update = Y
Jumbo frame = Y
Scattered Rx = Y
LRO = Y
diff --git a/drivers/net/txgbe/txgbe_ethdev_vf.c
b/drivers/net/txgbe/txgbe_ethdev_vf.c
index 58fd2c5a1..dd84a4955 100644
--- a/drivers/net/txgbe/txgbe_ethdev_vf.c
+++ b/drivers/net/txgbe/txgbe_ethdev_vf.c
@@ -913,6 +913,41 @@ txgbevf_set_default_mac_addr(struct rte_eth_dev *dev,
return 0;
}
+static int
+txgbevf_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
+{
+ struct txgbe_hw *hw;
+ uint32_t max_frame = mtu + RTE_ETHER_HDR_LEN + RTE_ETHER_CRC_LEN;
+ struct rte_eth_rxmode *rx_conf = &dev->data->dev_conf.rxmode;
+
+ hw = TXGBE_DEV_HW(dev);
+
+ if (mtu < RTE_ETHER_MIN_MTU ||
+ max_frame > RTE_ETHER_MAX_JUMBO_FRAME_LEN)
+ return -EINVAL;
+
+ /* refuse mtu that requires the support of scattered packets when this
+ * feature has not been enabled before.
+ */
+ if (!(rx_conf->offloads & DEV_RX_OFFLOAD_SCATTER) &&
+ (max_frame + 2 * TXGBE_VLAN_TAG_SIZE >
+ dev->data->min_rx_buf_size - RTE_PKTMBUF_HEADROOM))
+ return -EINVAL;
+
+ /*
+ * When supported by the underlying PF driver, use the TXGBE_VF_SET_MTU
+ * request of the version 2.0 of the mailbox API.
+ * For now, use the TXGBE_VF_SET_LPE request of the version 1.0
+ * of the mailbox API.
+ */
+ if (txgbevf_rlpml_set_vf(hw, max_frame))
+ return -EINVAL;
+
+ /* update max frame size */
+ dev->data->dev_conf.rxmode.max_rx_pkt_len = max_frame;
+ return 0;
+}
+
static int
txgbevf_dev_promiscuous_enable(struct rte_eth_dev *dev)
{
@@ -1076,6 +1111,7 @@ static const struct eth_dev_ops txgbevf_eth_dev_ops = {
.allmulticast_enable = txgbevf_dev_allmulticast_enable,
.allmulticast_disable = txgbevf_dev_allmulticast_disable,
.dev_infos_get = txgbevf_dev_info_get,
+ .mtu_set = txgbevf_dev_set_mtu,
.vlan_filter_set = txgbevf_vlan_filter_set,
.vlan_strip_queue_set = txgbevf_vlan_strip_queue_set,
.vlan_offload_set = txgbevf_vlan_offload_set,
--
2.27.0
