[netdevice] Notify upper-layer drivers when RX processing is (un)frozen

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/net/netdevice.c b/src/net/netdevice.c
index 82d0e82..4a42ef4 100644
--- a/src/net/netdevice.c
+++ b/src/net/netdevice.c
@@ -109,6 +109,34 @@ static void netdev_notify ( struct net_device *netdev ) {
 }
 
 /**
+ * Freeze network device receive queue processing
+ *
+ * @v netdev		Network device
+ */
+void netdev_rx_freeze ( struct net_device *netdev ) {
+
+	/* Mark receive queue processing as frozen */
+	netdev->state |= NETDEV_RX_FROZEN;
+
+	/* Notify drivers of change */
+	netdev_notify ( netdev );
+}
+
+/**
+ * Unfreeze network device receive queue processing
+ *
+ * @v netdev		Network device
+ */
+void netdev_rx_unfreeze ( struct net_device *netdev ) {
+
+	/* Mark receive queue processing as not frozen */
+	netdev->state &= ~NETDEV_RX_FROZEN;
+
+	/* Notify drivers of change */
+	netdev_notify ( netdev );
+}
+
+/**
  * Mark network device as having a specific link state
  *
  * @v netdev		Network device