cdc-ether: handle promiscuous mode with a set_rx_mode callback

Promiscuous mode was not supported anymore with my Lenovo adapters
(RTL8153) since commit c472ab68ad67db23c9907a27649b7dc0899b61f9
(cdc-ether: clean packet filter upon probe).

It was not possible to use them in a bridge anymore.

Signed-off-by: Olivier Blin <olivier.blin@softathome.com>
Also-analyzed-by: Loïc Yhuel <loic.yhuel@softathome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c
index bee3689..d3920b5 100644 (file)
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -76,6 +76,9 @@ static void usbnet_cdc_update_filter(struct usbnet *dev)
            USB_CDC_PACKET_TYPE_ALL_MULTICAST | 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.
@@ -496,6 +499,7 @@ static const struct driver_info     cdc_info = {
        .bind =         usbnet_cdc_bind,
        .unbind =       usbnet_cdc_unbind,
        .status =       usbnet_cdc_status,
+       .set_rx_mode =  usbnet_cdc_update_filter,
        .manage_power = usbnet_manage_power,
 };
 
@@ -505,6 +509,7 @@ static const struct driver_info wwan_info = {
        .bind =         usbnet_cdc_bind,
        .unbind =       usbnet_cdc_unbind,
        .status =       usbnet_cdc_status,
+       .set_rx_mode =  usbnet_cdc_update_filter,
        .manage_power = usbnet_manage_power,
 };