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dcb: wait for carrier down/up after disabling FCoE

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This commit is contained in:
Dan Williams 2014-03-31 15:06:22 -05:00
parent 18fd3e45d8
commit 55704170ca
1 changed files with 32 additions and 0 deletions
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32
src/nm-dcb.c
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@ -384,11 +384,43 @@ nm_dcb_setup (const char *iface, NMSettingDcb *s_dcb, GError **error)
return success;
}
static void
carrier_wait (const char *iface, guint secs, gboolean up)
{
int ifindex, count = secs * 10;
g_return_if_fail (iface != NULL);
ifindex = nm_platform_link_get_ifindex (iface);
if (ifindex > 0) {
/* To work around driver quirks and lldpad handling of carrier status,
* we must wait a short period of time to see if the carrier goes
* down, and then wait for the carrier to come back up again. Otherwise
* subsequent lldpad calls may fail with "Device not found, link down
* or DCB not enabled" errors.
*/
nm_log_dbg (LOGD_DCB, "(%s): cleanup waiting for carrier %s",
iface, up ? "up" : "down");
g_usleep (G_USEC_PER_SEC / 4);
while (nm_platform_link_is_connected (ifindex) != up && count-- > 0) {
g_usleep (G_USEC_PER_SEC / 10);
nm_platform_link_refresh (ifindex);
}
}
}
gboolean
nm_dcb_cleanup (const char *iface, GError **error)
{
/* Ignore FCoE cleanup errors */
_fcoe_cleanup (iface, run_helper, GUINT_TO_POINTER (FCOEADM), NULL);
/* Must pause a bit to wait for carrier-up since disabling FCoE may
* cause the device to take the link down, making lldpad return errors.
*/
carrier_wait (iface, 2, FALSE);
carrier_wait (iface, 4, TRUE);
return _dcb_cleanup (iface, run_helper, GUINT_TO_POINTER (DCBTOOL), error);
}