Commit 068301f2 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'cdc-ether' 



Olivier Blin says:

====================
cdc-ether: handle promiscuous mode

Since kernel 3.16, my Lenovo USB network adapters (RTL8153) using
cdc-ether are not working anymore in a bridge.

This is due to commit c472ab68, which
resets the packet filter when the device is bound.

The default packet filter set by cdc-ether does not include
promiscuous, while the adapter seemed to have promiscuous enabled by
default.

This patch series allows to support promiscuous mode for cdc-ether, by
hooking into set_rx_mode.

Incidentally, maybe this device should be handled by the r8152 driver,
but this patch series is still nice for other adapters.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Acked-by: default avatarOliver Neukum <oneukum@suse.de>
parents 9ffa1fca b77e26d1

drivers/net/usb/cdc_ether.c

+33 −14
Original line number Diff line number Diff line
@@ -67,6 +67,35 @@ static const u8 mbm_guid[16] = { 
	0xa6, 0x07, 0xc0, 0xff, 0xcb, 0x7e, 0x39, 0x2a,

};



static void usbnet_cdc_update_filter(struct usbnet *dev)

{

	struct cdc_state	*info = (void *) &dev->data;

	struct usb_interface	*intf = info->control;



	u16 cdc_filter =

	    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.

	 */



	usb_control_msg(dev->udev,

			usb_sndctrlpipe(dev->udev, 0),

			USB_CDC_SET_ETHERNET_PACKET_FILTER,

			USB_TYPE_CLASS | USB_RECIP_INTERFACE,

			cdc_filter,

			intf->cur_altsetting->desc.bInterfaceNumber,

			NULL,

			0,

			USB_CTRL_SET_TIMEOUT

		);

}



/* probes control interface, claims data interface, collects the bulk

 * endpoints, activates data interface (if needed), maybe sets MTU.

 * all pure cdc, except for certain firmware workarounds, and knowing
@@ -347,16 +376,8 @@ next_desc: 
	 * don't do reset all the way. So the packet filter should

	 * be set to a sane initial value.

	 */

	usb_control_msg(dev->udev,

			usb_sndctrlpipe(dev->udev, 0),

			USB_CDC_SET_ETHERNET_PACKET_FILTER,

			USB_TYPE_CLASS | USB_RECIP_INTERFACE,

			USB_CDC_PACKET_TYPE_ALL_MULTICAST | USB_CDC_PACKET_TYPE_DIRECTED | USB_CDC_PACKET_TYPE_BROADCAST,

			intf->cur_altsetting->desc.bInterfaceNumber,

			NULL,

			0,

			USB_CTRL_SET_TIMEOUT

		);

	usbnet_cdc_update_filter(dev);



	return 0;



bad_desc:
@@ -468,10 +489,6 @@ int usbnet_cdc_bind(struct usbnet *dev, struct usb_interface *intf) 
		return status;

	}



	/* 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.

	 */

	return 0;

}

EXPORT_SYMBOL_GPL(usbnet_cdc_bind);
@@ -482,6 +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,

};
@@ -491,6 +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,

};

drivers/net/usb/usbnet.c

+20 −0
Original line number Diff line number Diff line
@@ -1052,6 +1052,21 @@ static void __handle_link_change(struct usbnet *dev) 
	clear_bit(EVENT_LINK_CHANGE, &dev->flags);

}



static void usbnet_set_rx_mode(struct net_device *net)

{

	struct usbnet		*dev = netdev_priv(net);



	usbnet_defer_kevent(dev, EVENT_SET_RX_MODE);

}



static void __handle_set_rx_mode(struct usbnet *dev)

{

	if (dev->driver_info->set_rx_mode)

		(dev->driver_info->set_rx_mode)(dev);



	clear_bit(EVENT_SET_RX_MODE, &dev->flags);

}



/* work that cannot be done in interrupt context uses keventd.

 *

 * NOTE:  with 2.5 we could do more of this using completion callbacks,
@@ -1157,6 +1172,10 @@ skip_reset: 
	if (test_bit (EVENT_LINK_CHANGE, &dev->flags))

		__handle_link_change(dev);



	if (test_bit (EVENT_SET_RX_MODE, &dev->flags))

		__handle_set_rx_mode(dev);





	if (dev->flags)

		netdev_dbg(dev->net, "kevent done, flags = 0x%lx\n", dev->flags);

}
@@ -1525,6 +1544,7 @@ static const struct net_device_ops usbnet_netdev_ops = { 
	.ndo_stop		= usbnet_stop,

	.ndo_start_xmit		= usbnet_start_xmit,

	.ndo_tx_timeout		= usbnet_tx_timeout,

	.ndo_set_rx_mode	= usbnet_set_rx_mode,

	.ndo_change_mtu		= usbnet_change_mtu,

	.ndo_set_mac_address 	= eth_mac_addr,

	.ndo_validate_addr	= eth_validate_addr,

include/linux/usb/usbnet.h

+4 −0
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ struct usbnet { 
#		define EVENT_NO_RUNTIME_PM	9

#		define EVENT_RX_KILL	10

#		define EVENT_LINK_CHANGE	11

#		define EVENT_SET_RX_MODE	12

};



static inline struct usb_driver *driver_of(struct usb_interface *intf)
@@ -159,6 +160,9 @@ struct driver_info { 
	/* called by minidriver when receiving indication */

	void	(*indication)(struct usbnet *dev, void *ind, int indlen);



	/* rx mode change (device changes address list filtering) */

	void	(*set_rx_mode)(struct usbnet *dev);



	/* for new devices, use the descriptor-reading code instead */

	int		in;		/* rx endpoint */

	int		out;		/* tx endpoint */

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