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wired: check carrier immediately after bringing device up

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Virtual devices that we might create when their slave is started
(like bonds) have a virtual carrier that often isn't set on when
until the device is brought up.  The device is brought up during
creation, but the initial carrier check happens before the device
is up, so the initial carrier state from the constructor isn't
quite accurate in some cases.

Since we want to use virtual interfaces that we create right after
we create them, we want them to be available too, and that usually
requires the carrier to be on.  So recheck the carrier right after
bringing the interface up, so that the carrier state is accurate
immediately after the device is created.
This commit is contained in:
Dan Williams 2012-02-27 18:55:55 -06:00
parent 28edd78f89
commit 58227d0136
1 changed files with 32 additions and 17 deletions
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49
src/nm-device-wired.c
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@ -241,6 +241,29 @@ carrier_off (NMNetlinkMonitor *monitor,
}
}
static gboolean
get_carrier_sync (NMDeviceWired *self)
{
NMDeviceWiredPrivate *priv = NM_DEVICE_WIRED_GET_PRIVATE (self);
GError *error = NULL;
guint32 ifflags = 0;
/* Get initial link state */
if (!nm_netlink_monitor_get_flags_sync (priv->monitor,
nm_device_get_ip_ifindex (NM_DEVICE (self)),
&ifflags,
&error)) {
nm_log_warn (LOGD_HW | NM_DEVICE_WIRED_LOG_LEVEL (NM_DEVICE (self)),
"(%s): couldn't get carrier state: (%d) %s",
nm_device_get_ip_iface (NM_DEVICE (self)),
error ? error->code : -1,
(error && error->message) ? error->message : "unknown");
g_clear_error (&error);
}
return !!(ifflags & IFF_LOWER_UP);
}
static GObject*
constructor (GType type,
guint n_construct_params,
@ -280,9 +303,6 @@ constructor (GType type,
caps = nm_device_get_capabilities (self);
if (caps & NM_DEVICE_CAP_CARRIER_DETECT) {
GError *error = NULL;
guint32 ifflags = 0;
/* Only listen to netlink for cards that support carrier detect */
priv->monitor = nm_netlink_monitor_get ();
@ -293,19 +313,7 @@ constructor (GType type,
G_CALLBACK (carrier_off),
self);
/* Get initial link state */
if (!nm_netlink_monitor_get_flags_sync (priv->monitor,
nm_device_get_ifindex (NM_DEVICE (self)),
&ifflags,
&error)) {
nm_log_warn (LOGD_HW | NM_DEVICE_WIRED_LOG_LEVEL (NM_DEVICE (self)),
"(%s): couldn't get initial carrier state: (%d) %s",
nm_device_get_iface (NM_DEVICE (self)),
error ? error->code : -1,
(error && error->message) ? error->message : "unknown");
g_clear_error (&error);
} else
priv->carrier = !!(ifflags & IFF_LOWER_UP);
priv->carrier = get_carrier_sync (NM_DEVICE_WIRED (self));
nm_log_info (LOGD_HW | NM_DEVICE_WIRED_LOG_LEVEL (NM_DEVICE (self)),
"(%s): carrier is %s",
@ -341,7 +349,14 @@ real_hw_is_up (NMDevice *device)
static gboolean
real_hw_bring_up (NMDevice *dev, gboolean *no_firmware)
{
return nm_system_iface_set_up (nm_device_get_ip_ifindex (dev), TRUE, no_firmware);
gboolean success, carrier;
success = nm_system_iface_set_up (nm_device_get_ip_ifindex (dev), TRUE, no_firmware);
if (success) {
carrier = get_carrier_sync (NM_DEVICE_WIRED (dev));
set_carrier (NM_DEVICE_WIRED (dev), carrier, carrier ? FALSE : TRUE);
}
return success;
}
static void