[dpdk-dev] [PATCH 1/2] rte_ethdev: update link status (speed, duplex, link_up) after rte_eth_dev_start

[Jia Yu <jyu@vmware.com>]

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.

Issue:
Change-Id: Ib57a1c9114f922485c7b0f4338bfe7b3d3f87d65
Signed-off-by: Jia Yu <jyu@vmware.com>
---
 lib/librte_ether/rte_ethdev.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index ff1c769..6c01b02 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -869,6 +869,10 @@ 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;
 }
 
-- 
1.9.1