net/dpaa2: update link status

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>

diff --git a/doc/guides/nics/features/dpaa2.ini b/doc/guides/nics/features/dpaa2.ini
index 0746d4b..0660cab 100644 (file)
--- a/doc/guides/nics/features/dpaa2.ini
+++ b/doc/guides/nics/features/dpaa2.ini
@@ -4,6 +4,7 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Link status          = Y
 Queue start/stop     = Y
 MTU update           = Y
 Promiscuous mode     = Y

diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c b/drivers/net/dpaa2/dpaa2_ethdev.c
index c92b865..03d0e8c 100644 (file)
--- a/drivers/net/dpaa2/dpaa2_ethdev.c
+++ b/drivers/net/dpaa2/dpaa2_ethdev.c
@@ -54,6 +54,58 @@
 
 static struct rte_dpaa2_driver rte_dpaa2_pmd;
 
+/**
+ * Atomically reads the link status information from global
+ * structure rte_eth_dev.
+ *
+ * @param dev
+ *   - Pointer to the structure rte_eth_dev to read from.
+ *   - Pointer to the buffer to be saved with the link status.
+ *
+ * @return
+ *   - On success, zero.
+ *   - On failure, negative value.
+ */
+static inline int
+dpaa2_dev_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;
+}
+
+/**
+ * Atomically writes the link status information into global
+ * structure rte_eth_dev.
+ *
+ * @param dev
+ *   - Pointer to the structure rte_eth_dev to read from.
+ *   - Pointer to the buffer to be saved with the link status.
+ *
+ * @return
+ *   - On success, zero.
+ *   - On failure, negative value.
+ */
+static inline int
+dpaa2_dev_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 void
 dpaa2_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 {
@@ -430,6 +482,7 @@ dpaa2_dev_stop(struct rte_eth_dev *dev)
        struct dpaa2_dev_priv *priv = dev->data->dev_private;
        struct fsl_mc_io *dpni = (struct fsl_mc_io *)priv->hw;
        int ret;
+       struct rte_eth_link link;
 
        PMD_INIT_FUNC_TRACE();
 
@@ -439,6 +492,10 @@ dpaa2_dev_stop(struct rte_eth_dev *dev)
                             ret, priv->hw_id);
                return;
        }
+
+       /* clear the recorded link status */
+       memset(&link, 0, sizeof(link));
+       dpaa2_dev_atomic_write_link_status(dev, &link);
 }
 
 static void
@@ -531,6 +588,55 @@ dpaa2_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
        return 0;
 }
 
+/* return 0 means link status changed, -1 means not changed */
+static int
+dpaa2_dev_link_update(struct rte_eth_dev *dev,
+                       int wait_to_complete __rte_unused)
+{
+       int ret;
+       struct dpaa2_dev_priv *priv = dev->data->dev_private;
+       struct fsl_mc_io *dpni = (struct fsl_mc_io *)priv->hw;
+       struct rte_eth_link link, old;
+       struct dpni_link_state state = {0};
+
+       PMD_INIT_FUNC_TRACE();
+
+       if (dpni == NULL) {
+               RTE_LOG(ERR, PMD, "error : dpni is NULL");
+               return 0;
+       }
+       memset(&old, 0, sizeof(old));
+       dpaa2_dev_atomic_read_link_status(dev, &old);
+
+       ret = dpni_get_link_state(dpni, CMD_PRI_LOW, priv->token, &state);
+       if (ret < 0) {
+               RTE_LOG(ERR, PMD, "error: dpni_get_link_state %d", ret);
+               return -1;
+       }
+
+       if ((old.link_status == state.up) && (old.link_speed == state.rate)) {
+               RTE_LOG(DEBUG, PMD, "No change in status\n");
+               return -1;
+       }
+
+       memset(&link, 0, sizeof(struct rte_eth_link));
+       link.link_status = state.up;
+       link.link_speed = state.rate;
+
+       if (state.options & DPNI_LINK_OPT_HALF_DUPLEX)
+               link.link_duplex = ETH_LINK_HALF_DUPLEX;
+       else
+               link.link_duplex = ETH_LINK_FULL_DUPLEX;
+
+       dpaa2_dev_atomic_write_link_status(dev, &link);
+
+       if (link.link_status)
+               PMD_DRV_LOG(INFO, "Port %d Link is Up\n", dev->data->port_id);
+       else
+               PMD_DRV_LOG(INFO, "Port %d Link is Down\n", dev->data->port_id);
+       return 0;
+}
+
 static struct eth_dev_ops dpaa2_ethdev_ops = {
        .dev_configure    = dpaa2_eth_dev_configure,
        .dev_start            = dpaa2_dev_start,
@@ -538,6 +644,7 @@ static struct eth_dev_ops dpaa2_ethdev_ops = {
        .dev_close            = dpaa2_dev_close,
        .promiscuous_enable   = dpaa2_dev_promiscuous_enable,
        .promiscuous_disable  = dpaa2_dev_promiscuous_disable,
+       .link_update       = dpaa2_dev_link_update,
        .dev_infos_get     = dpaa2_dev_info_get,
        .dev_supported_ptypes_get = dpaa2_supported_ptypes_get,
        .mtu_set           = dpaa2_dev_mtu_set,