[dpdk-dev] [PATCH v3 3/6] kni: set default carrier state to 'off'

[Dan Gora]

Set the carrier state to 'off' when the interface is instantiated
or when it is marked 'up' or 'down'.  This is necessary to set the
interface to a known operational state until the carrier state is
changed with rte_kni_update_link().

Signed-off-by: Dan Gora <d...@adax.com>
---
 kernel/linux/kni/kni_misc.c | 2 ++
 kernel/linux/kni/kni_net.c  | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c
index fa69f8e63..45649499d 100644
--- a/kernel/linux/kni/kni_misc.c
+++ b/kernel/linux/kni/kni_misc.c
@@ -466,6 +466,8 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
                return -ENODEV;
        }
 
+       netif_carrier_off(net_dev);
+
        ret = kni_run_thread(knet, kni, dev_info.force_bind);
        if (ret != 0)
                return ret;
diff --git a/kernel/linux/kni/kni_net.c b/kernel/linux/kni/kni_net.c
index 7fcfa106c..1f8ba0700 100644
--- a/kernel/linux/kni/kni_net.c
+++ b/kernel/linux/kni/kni_net.c
@@ -133,6 +133,7 @@ kni_net_open(struct net_device *dev)
        struct kni_dev *kni = netdev_priv(dev);
 
        netif_start_queue(dev);
+       netif_carrier_off(dev);
 
        memset(&req, 0, sizeof(req));
        req.req_id = RTE_KNI_REQ_CFG_NETWORK_IF;
@@ -152,6 +153,7 @@ kni_net_release(struct net_device *dev)
        struct kni_dev *kni = netdev_priv(dev);
 
        netif_stop_queue(dev); /* can't transmit any more */
+       netif_carrier_off(dev);
 
        memset(&req, 0, sizeof(req));
        req.req_id = RTE_KNI_REQ_CFG_NETWORK_IF;
-- 
2.19.0