hyperv: Add handler for RNDIS_STATUS_NETWORK_CHANGE event
The RNDIS_STATUS_NETWORK_CHANGE event is received after the Hyper-V host
sleep or hibernation. We refresh network at this time.
MS-TFS: 135162
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 6cc37c1..24441ae 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -170,6 +170,7 @@
enum rndis_device_state state;
bool link_state;
+ bool link_change;
atomic_t new_req_id;
spinlock_t request_lock;
@@ -185,7 +186,7 @@
int netvsc_send(struct hv_device *device,
struct hv_netvsc_packet *packet);
void netvsc_linkstatus_callback(struct hv_device *device_obj,
- unsigned int status);
+ struct rndis_message *resp);
int netvsc_recv_callback(struct hv_device *device_obj,
struct hv_netvsc_packet *packet,
struct ndis_tcp_ip_checksum_info *csum_info);
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 4fd71b7..9b27ca8 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -579,8 +579,9 @@
* netvsc_linkstatus_callback - Link up/down notification
*/
void netvsc_linkstatus_callback(struct hv_device *device_obj,
- unsigned int status)
+ struct rndis_message *resp)
{
+ struct rndis_indicate_status *indicate = &resp->msg.indicate_status;
struct net_device *net;
struct net_device_context *ndev_ctx;
struct netvsc_device *net_device;
@@ -589,7 +590,19 @@
net_device = hv_get_drvdata(device_obj);
rdev = net_device->extension;
- rdev->link_state = status != 1;
+ switch (indicate->status) {
+ case RNDIS_STATUS_MEDIA_CONNECT:
+ rdev->link_state = false;
+ break;
+ case RNDIS_STATUS_MEDIA_DISCONNECT:
+ rdev->link_state = true;
+ break;
+ case RNDIS_STATUS_NETWORK_CHANGE:
+ rdev->link_change = true;
+ break;
+ default:
+ return;
+ }
net = net_device->ndev;
@@ -597,7 +610,7 @@
return;
ndev_ctx = netdev_priv(net);
- if (status == 1) {
+ if (!rdev->link_state) {
schedule_delayed_work(&ndev_ctx->dwork, 0);
schedule_delayed_work(&ndev_ctx->dwork, msecs_to_jiffies(20));
} else {
@@ -767,7 +780,9 @@
struct net_device *net;
struct netvsc_device *net_device;
struct rndis_device *rdev;
- bool notify;
+ bool notify, refresh = false;
+ char *argv[] = { "/etc/init.d/network", "restart", NULL };
+ char *envp[] = { "HOME=/", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
rtnl_lock();
@@ -782,10 +797,17 @@
} else {
netif_carrier_on(net);
notify = true;
+ if (rdev->link_change) {
+ rdev->link_change = false;
+ refresh = true;
+ }
}
rtnl_unlock();
+ if (refresh)
+ call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC);
+
if (notify)
netdev_notify_peers(net);
}
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 99c527a..2b86f0b 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -320,25 +320,6 @@
}
}
-static void rndis_filter_receive_indicate_status(struct rndis_device *dev,
- struct rndis_message *resp)
-{
- struct rndis_indicate_status *indicate =
- &resp->msg.indicate_status;
-
- if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) {
- netvsc_linkstatus_callback(
- dev->net_dev->dev, 1);
- } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) {
- netvsc_linkstatus_callback(
- dev->net_dev->dev, 0);
- } else {
- /*
- * TODO:
- */
- }
-}
-
/*
* Get the Per-Packet-Info with the specified type
* return NULL if not found.
@@ -464,7 +445,7 @@
case RNDIS_MSG_INDICATE:
/* notification msgs */
- rndis_filter_receive_indicate_status(rndis_dev, rndis_msg);
+ netvsc_linkstatus_callback(dev, rndis_msg);
break;
default:
netdev_err(ndev,
