[PATCH v2] hyperv: Add netpoll support

Richard Weinberger
2014-07-09T07:58:39Z

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.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
drivers/net/hyperv/netvsc_drv.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index 4fd71b7..45218d5 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -736,6 +736,14 @@ 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)
+{
+ /* As netvsc_start_xmit() works synchronous we don't have to
+ trigger anything here. */
+ return;
+}
+#endif

static const struct ethtool_ops ethtool_ops = {
.get_drvinfo = netvsc_get_drvinfo,
@@ -751,6 +759,9 @@ 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