ethdev: update link status after start

Since LSR interrupt is disabled by pmd drivers, link status in rte_eth_device is always down.
Bond slave_configure() enables LSR interrupt on devices to get notification if link status
changes. However, the LSC interrupt at device start time is still lost.

In this fix, call link_update to read link status from hardware
register at device start time.

Signed-off-by: Jia Yu <jyu@vmware.com>
Acked-by: Helin Zhang <helin.zhang@intel.com>

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index ea3a1fbfd9baeb88a9a0238efd419acfb6cb91aa..8993b35ffbd0f911b9701f056a4c74aedcb69e18 100644 (file)
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -911,6 +911,10 @@ rte_eth_dev_start(uint8_t port_id)
 
        rte_eth_dev_config_restore(port_id);
 
+       if (dev->data->dev_conf.intr_conf.lsc != 0) {
+               FUNC_PTR_OR_ERR_RET(*dev->dev_ops->link_update, -ENOTSUP);
+               (*dev->dev_ops->link_update)(dev, 0);
+       }
        return 0;
 }