This patch enables configuring MTU for i40e.
Since changing MTU needs to reconfigure queue, stop port first
before configuring MTU.
Signed-off-by: Beilei Xing <beilei.xing at intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 49 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index bc28d3c..29259b9 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -447,6 +447,8 @@ static int i40e_get_eeprom(struct rte_eth_dev *dev,
static void i40e_set_default_mac_addr(struct rte_eth_dev *dev,
struct ether_addr *mac_addr);
+static int i40e_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
+
static const struct rte_pci_id pci_id_i40e_map[] = {
#define RTE_PCI_DEV_ID_DECL_I40E(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
#include "rte_pci_dev_ids.h"
@@ -520,6 +522,7 @@ static const struct eth_dev_ops i40e_eth_dev_ops = {
.get_eeprom_length = i40e_get_eeprom_length,
.get_eeprom = i40e_get_eeprom,
.mac_addr_set = i40e_set_default_mac_addr,
+ .mtu_set = i40e_dev_mtu_set,
};
/* store statistics names and its offset in stats structure */
@@ -9104,3 +9107,49 @@ static void i40e_set_default_mac_addr(struct rte_eth_dev
*dev,
/* Flags: 0x3 updates port address */
i40e_aq_mac_address_write(hw, 0x3, mac_addr->addr_bytes, NULL);
}
+
+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;
+ struct rte_eth_dev_info dev_info;
+ struct i40e_rx_queue *rxq;
+ int i;
+ uint16_t len;
+ uint32_t frame_size = mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
+ int ret = 0;
+
+ i40e_dev_info_get(dev, &dev_info);
+
+ /* check if mtu is within the allowed range */
+ if ((mtu < ETHER_MIN_MTU) || (frame_size > dev_info.max_rx_pktlen))
+ return -EINVAL;
+
+ /* mtu setting is forbidden if port is start */
+ if (dev_data->dev_started) {
+ PMD_DRV_LOG(ERR,
+ "port %d must be stopped before configuration\n",
+ dev_data->port_id);
+ return -EBUSY;
+ }
+
+ if (frame_size > ETHER_MAX_LEN)
+ dev_data->dev_conf.rxmode.jumbo_frame = 1;
+ else
+ dev_data->dev_conf.rxmode.jumbo_frame = 0;
+
+ for (i = 0; i < dev_data->nb_rx_queues; i++) {
+ rxq = dev_data->rx_queues[i];
+ if (!rxq || !rxq->q_set)
+ continue;
+
+ dev_data->dev_conf.rxmode.max_rx_pkt_len = frame_size;
+ len = hw->func_caps.rx_buf_chain_len * rxq->rx_buf_len;
+ rxq->max_pkt_len = RTE_MIN(len, frame_size);
+ }
+
+ ret = i40e_dev_rx_init(pf);
+
+ return ret;
+}
--
2.5.0
