+static inline int
+pfe_eth_atomic_read_link_status(struct rte_eth_dev *dev,
+ struct rte_eth_link *link)
+{
+ struct rte_eth_link *dst = link;
+ struct rte_eth_link *src = &dev->data->dev_link;
+
+ if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
+ *(uint64_t *)src) == 0)
+ return -1;
+
+ return 0;
+}
+
+static inline int
+pfe_eth_atomic_write_link_status(struct rte_eth_dev *dev,
+ struct rte_eth_link *link)
+{
+ struct rte_eth_link *dst = &dev->data->dev_link;
+ struct rte_eth_link *src = link;
+
+ if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
+ *(uint64_t *)src) == 0)
+ return -1;
+
+ return 0;
+}
+
+static int
+pfe_eth_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
+{
+ int ret, ioctl_cmd = 0;
+ struct pfe_eth_priv_s *priv = dev->data->dev_private;
+ struct rte_eth_link link, old;
+ unsigned int lstatus = 1;
+
+ if (dev == NULL) {
+ PFE_PMD_ERR("Invalid device in link_update.\n");
+ return 0;
+ }
+
+ memset(&old, 0, sizeof(old));
+ memset(&link, 0, sizeof(struct rte_eth_link));
+
+ pfe_eth_atomic_read_link_status(dev, &old);
+
+ /* Read from PFE CDEV, status of link, if file was successfully
+ * opened.
+ */
+ if (priv->link_fd != PFE_CDEV_INVALID_FD) {
+ if (priv->id == 0)
+ ioctl_cmd = PFE_CDEV_ETH0_STATE_GET;
+ if (priv->id == 1)
+ ioctl_cmd = PFE_CDEV_ETH1_STATE_GET;
+
+ ret = ioctl(priv->link_fd, ioctl_cmd, &lstatus);
+ if (ret != 0) {
+ PFE_PMD_ERR("Unable to fetch link status (ioctl)\n");
+ /* use dummy link value */
+ link.link_status = 1;
+ }
+ PFE_PMD_DEBUG("Fetched link state (%d) for dev %d.\n",
+ lstatus, priv->id);
+ }
+
+ if (old.link_status == lstatus) {
+ /* no change in status */
+ PFE_PMD_DEBUG("No change in link status; Not updating.\n");
+ return -1;
+ }
+
+ link.link_status = lstatus;
+ link.link_speed = ETH_LINK_SPEED_1G;
+ link.link_duplex = ETH_LINK_FULL_DUPLEX;
+ link.link_autoneg = ETH_LINK_AUTONEG;
+
+ pfe_eth_atomic_write_link_status(dev, &link);
+
+ PFE_PMD_INFO("Port (%d) link is %s\n", dev->data->port_id,
+ link.link_status ? "up" : "down");
+
+ return 0;
+}
+