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authorstephen hemminger <stephen@networkplumber.org>2017-06-07 15:53:48 -0700
committerDavid S. Miller <davem@davemloft.net>2017-06-08 11:45:48 -0400
commita5ecd43992a7cd9f91d5f98b0082ae44df5e543c (patch)
treeeaf5c83dec01b34bc96c9739ce59538c11b74cb3 /drivers
parentfbd4c7e768f1719bea340e40148800279d230922 (diff)
downloadlinux-a5ecd43992a7cd9f91d5f98b0082ae44df5e543c.tar.bz2
netvsc: fix net poll mode
The ndo_poll_controller function needs to schedule NAPI to pick up arriving packets and send completions. Otherwise no data will ever be received. For simple case of netconsole, it also will allow send completions to happen. Without this netpoll will eventually get stuck. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/hyperv/netvsc_drv.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index d93e4da25fd2..252e5d52d17e 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1158,11 +1158,22 @@ netvsc_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
}
#ifdef CONFIG_NET_POLL_CONTROLLER
-static void netvsc_poll_controller(struct net_device *net)
+static void netvsc_poll_controller(struct net_device *dev)
{
- /* As netvsc_start_xmit() works synchronous we don't have to
- * trigger anything here.
- */
+ struct net_device_context *ndc = netdev_priv(dev);
+ struct netvsc_device *ndev;
+ int i;
+
+ rcu_read_lock();
+ ndev = rcu_dereference(ndc->nvdev);
+ if (ndev) {
+ for (i = 0; i < ndev->num_chn; i++) {
+ struct netvsc_channel *nvchan = &ndev->chan_table[i];
+
+ napi_schedule(&nvchan->napi);
+ }
+ }
+ rcu_read_unlock();
}
#endif