+static int
+eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct ifreq ifr = { .ifr_mtu = mtu };
+ int ret;
+ int s;
+ unsigned int data_size = internals->req.tp_frame_size -
+ TPACKET2_HDRLEN -
+ sizeof(struct sockaddr_ll);
+
+ if (mtu > data_size)
+ return -EINVAL;
+
+ s = socket(PF_INET, SOCK_DGRAM, 0);
+ if (s < 0)
+ return -EINVAL;
+
+ strncpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
+ ret = ioctl(s, SIOCSIFMTU, &ifr);
+ close(s);
+
+ if (ret < 0)
+ return -EINVAL;
+
+ return 0;
+}
+