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netvsc: need napi scheduled during removal 

Since rndis_halt_device waits until all outstanding sends and
receives are completed. Netvsc device needs to still schedule
NAPI to see those completions.

Fixes: 2506b1dc4bbe ("netvsc: implement NAPI")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2017-03-09 15:04:14 -08:00 committed by David S. Miller
parent 115a731e52
commit 0d6dd35784
1 changed files with 2 additions and 14 deletions
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16
drivers/net/hyperv/netvsc.c
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@ -91,15 +91,6 @@ static void free_netvsc_device(struct netvsc_device *nvdev)
}
static inline bool netvsc_channel_idle(const struct netvsc_device *net_device,
u16 q_idx)
{
const struct netvsc_channel *nvchan = &net_device->chan_table[q_idx];
return atomic_read(&net_device->num_outstanding_recvs) == 0 &&
atomic_read(&nvchan->queue_sends) == 0;
}
static struct netvsc_device *get_outbound_net_device(struct hv_device *device)
{
struct netvsc_device *net_device = hv_device_to_netvsc_device(device);
@ -1273,13 +1264,10 @@ void netvsc_channel_cb(void *context)
if (unlikely(!ndev))
return;
net_device = net_device_to_netvsc_device(ndev);
if (unlikely(net_device->destroy) &&
netvsc_channel_idle(net_device, q_idx))
return;
/* disable interupts from host */
hv_begin_read(&channel->inbound);
net_device = net_device_to_netvsc_device(ndev);
napi_schedule(&net_device->chan_table[q_idx].napi);
}