In order to have at least a netconsole to debug kernel issues on
Windows Azure this patch implements netpoll support.
Sending packets is easy, netvsc_start_xmit() does already everything
needed.
To receive we need to trigger the channel callback which is usally
called via tasklet_schedule().
Signed-off-by: Richard Weinberger <richard@xxxxxx>
---
drivers/net/hyperv/netvsc_drv.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 4fd71b7..367b71e 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -736,6 +736,17 @@ static int netvsc_set_mac_addr(struct net_device *ndev, void *p)
return err;
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void netvsc_poll_controller(struct net_device *net)
+{
+ struct net_device_context *net_device_ctx = netdev_priv(net);
+ struct hv_device *dev = net_device_ctx->device_ctx;
+
+ local_bh_disable();
+ netvsc_channel_cb(dev->channel);
+ local_bh_enable();
+}
+#endif
static const struct ethtool_ops ethtool_ops = {
.get_drvinfo = netvsc_get_drvinfo,
@@ -751,6 +762,9 @@ static const struct net_device_ops device_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = netvsc_set_mac_addr,
.ndo_select_queue = netvsc_select_queue,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = netvsc_poll_controller,
+#endif
};
/*
--
2.0.1
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