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path: root/drivers/net/usb/cdc_ether.c
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Diffstat (limited to 'drivers/net/usb/cdc_ether.c')
-rw-r--r--drivers/net/usb/cdc_ether.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index d3920b5..9311a08 100644
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -71,18 +71,19 @@ static void usbnet_cdc_update_filter(struct usbnet *dev)
{
struct cdc_state *info = (void *) &dev->data;
struct usb_interface *intf = info->control;
+ struct net_device *net = dev->net;
- u16 cdc_filter =
- USB_CDC_PACKET_TYPE_ALL_MULTICAST | USB_CDC_PACKET_TYPE_DIRECTED |
- USB_CDC_PACKET_TYPE_BROADCAST;
+ u16 cdc_filter = USB_CDC_PACKET_TYPE_DIRECTED
+ | USB_CDC_PACKET_TYPE_BROADCAST;
- if (dev->net->flags & IFF_PROMISC)
- cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
-
- /* FIXME cdc-ether has some multicast code too, though it complains
- * in routine cases. info->ether describes the multicast support.
- * Implement that here, manipulating the cdc filter as needed.
+ /* filtering on the device is an optional feature and not worth
+ * the hassle so we just roughly care about snooping and if any
+ * multicast is requested, we take every multicast
*/
+ if (net->flags & IFF_PROMISC)
+ cdc_filter |= USB_CDC_PACKET_TYPE_PROMISCUOUS;
+ if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI))
+ cdc_filter |= USB_CDC_PACKET_TYPE_ALL_MULTICAST;
usb_control_msg(dev->udev,
usb_sndctrlpipe(dev->udev, 0),
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