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netvsc: force link update after MTU change 

If two MTU changes are in less than update interval (2 seconds),
then the netvsc network device may get stuck with no carrier.

The netvsc driver debounces link status events which is fine
for unsolicited updates, but blocks getting the update after
down/up from MTU reinitialization.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2017-07-19 11:53:12 -07:00 committed by David S. Miller
parent 9492f4269e
commit 1b01994aa6
1 changed files with 1 additions and 0 deletions
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1
drivers/net/hyperv/netvsc_drv.c
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@ -783,6 +783,7 @@ static int netvsc_set_channels(struct net_device *net,
ret = netvsc_open(net);
/* We may have missed link change notifications */
net_device_ctx->last_reconfig = 0;
schedule_delayed_work(&net_device_ctx->dwork, 0);
return ret;