We simulates a link down period for RNDIS_STATUS_NETWORK_CHANGE message to
trigger DHCP renew. User daemons may need multiple seconds to trigger the
link down event. (e.g. ifplugd: 5sec, network-manager: 4sec.) So update
this link down period to 10 sec to properly trigger DHCP renew.
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
drivers/net/hyperv/netvsc_drv.c | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 1d3a665..6f23973 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -43,6 +43,8 @@
#define RING_SIZE_MIN 64
#define LINKCHANGE_INT (2 * HZ)
+/* Extra delay for RNDIS_STATUS_NETWORK_CHANGE: */
+#define LINKCHANGE_DELAY (8 * HZ)
static int ring_size = 128;
module_param(ring_size, int, S_IRUGO);
MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)");
@@ -964,6 +966,7 @@ static void netvsc_link_change(struct work_struct *w)
return;
}
ndev_ctx->last_reconfig = jiffies;
+ delay = LINKCHANGE_INT;
spin_lock_irqsave(&ndev_ctx->lock, flags);
if (!list_empty(&ndev_ctx->reconfig_events)) {
@@ -1009,8 +1012,11 @@ static void netvsc_link_change(struct work_struct *w)
netif_tx_stop_all_queues(net);
event->event = RNDIS_STATUS_MEDIA_CONNECT;
spin_lock_irqsave(&ndev_ctx->lock, flags);
- list_add_tail(&event->list, &ndev_ctx->reconfig_events);
+ list_add(&event->list, &ndev_ctx->reconfig_events);
spin_unlock_irqrestore(&ndev_ctx->lock, flags);
+
+ ndev_ctx->last_reconfig += LINKCHANGE_DELAY;
+ delay = LINKCHANGE_INT + LINKCHANGE_DELAY;
reschedule = true;
}
break;
@@ -1025,7 +1031,7 @@ static void netvsc_link_change(struct work_struct *w)
* second, handle next reconfig event in 2 seconds.
*/
if (reschedule)
- schedule_delayed_work(&ndev_ctx->dwork, LINKCHANGE_INT);
+ schedule_delayed_work(&ndev_ctx->dwork, delay);
}
static void netvsc_free_netdev(struct net_device *netdev)
--
1.7.4.1
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