[PATCH] USB: rndis updates (mostly cleanup)

Some bugfixes and lots of cleanup (net code shrink):

  - On reset, force the RNDIS state machine its initial state

  - Hook up the RNDIS (outgoing) filters to the CDC mechanism

  - Lots of cleanup:
     * Eliminate duplicate copy of OID table;
     * Unify handlying of the OID "query" response data pointer;
     * Reduce code duplication for calculating query response lengths;
     * Remove some checks for "can't happen" errors;
     * Get rid of debugging #ifdefs by making the debug flag an integer level

Most of the patch, by volume, relates to those query response cleanups.
It incidentally shaves off a few hundred bytes of object code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/ether.c

@@ -94,8 +94,9 @@ static const char driver_desc [] = DRIVER_DESC;
 #ifdef	CONFIG_USB_ETH_RNDIS
 #include "rndis.h"
 #else
-#define rndis_init() 0
-#define rndis_exit() do{}while(0)
+#define rndis_init()	0
+#define rndis_uninit(x)	do{}while(0)
+#define rndis_exit()	do{}while(0)
 #endif
 
 /* CDC and RNDIS support the same host-chosen outgoing packet filters. */
@@ -395,7 +396,8 @@ static inline int BITRATE(struct usb_gadget *g)
 #define STRING_SUBSET			8
 #define STRING_RNDIS			9
 
-#define USB_BUFSIZ	256		/* holds our biggest descriptor */
+/* holds our biggest descriptor (or RNDIS response) */
+#define USB_BUFSIZ	256
 
 /*
  * This device advertises one configuration, eth_config, unless RNDIS
@@ -1124,6 +1126,7 @@ static void eth_reset_config (struct eth_dev *dev)
 
 	netif_stop_queue (dev->net);
 	netif_carrier_off (dev->net);
+	rndis_uninit(dev->rndis_config);
 
 	/* disable endpoints, forcing (synchronous) completion of
 	 * pending i/o.  then free the requests.
@@ -2565,7 +2568,7 @@ eth_bind (struct usb_gadget *gadget)
 		/* these set up a lot of the OIDs that RNDIS needs */
 		rndis_set_host_mac (dev->rndis_config, dev->host_mac);
 		if (rndis_set_param_dev (dev->rndis_config, dev->net,
-					 &dev->stats))
+					 &dev->stats, &dev->cdc_filter))
 			goto fail0;
 		if (rndis_set_param_vendor (dev->rndis_config, vendorID,
 					    manufacturer))

drivers/usb/gadget/ndis.h

@@ -47,17 +47,17 @@ struct NDIS_PM_WAKE_UP_CAPABILITIES {
 #define NDIS_DEVICE_WAKE_ON_MAGIC_PACKET_ENABLE   0x00000004
 
 struct NDIS_PNP_CAPABILITIES {
-	u32					Flags;
+	__le32					Flags;
 	struct NDIS_PM_WAKE_UP_CAPABILITIES	WakeUpCapabilities;
 };
 
 struct NDIS_PM_PACKET_PATTERN {
-	u32	Priority;
-	u32	Reserved;
-	u32	MaskSize;
-	u32	PatternOffset;
-	u32	PatternSize;
-	u32	PatternFlags;
+	__le32	Priority;
+	__le32	Reserved;
+	__le32	MaskSize;
+	__le32	PatternOffset;
+	__le32	PatternSize;
+	__le32	PatternFlags;
 };
 
 

drivers/usb/gadget/rndis.h

@@ -69,90 +69,6 @@
 #define OID_PNP_ENABLE_WAKE_UP			0xFD010106
 
 
-/* supported OIDs */
-static const u32 oid_supported_list [] = 
-{
-	/* the general stuff */
-	OID_GEN_SUPPORTED_LIST,
-	OID_GEN_HARDWARE_STATUS,
-	OID_GEN_MEDIA_SUPPORTED,
-	OID_GEN_MEDIA_IN_USE,
-	OID_GEN_MAXIMUM_FRAME_SIZE,
-	OID_GEN_LINK_SPEED,
-	OID_GEN_TRANSMIT_BLOCK_SIZE,
-	OID_GEN_RECEIVE_BLOCK_SIZE,
-	OID_GEN_VENDOR_ID,
-	OID_GEN_VENDOR_DESCRIPTION,
-	OID_GEN_VENDOR_DRIVER_VERSION,
-	OID_GEN_CURRENT_PACKET_FILTER,
-	OID_GEN_MAXIMUM_TOTAL_SIZE,
-	OID_GEN_MEDIA_CONNECT_STATUS,
-	OID_GEN_PHYSICAL_MEDIUM,
-#if 0
-	OID_GEN_RNDIS_CONFIG_PARAMETER,
-#endif
-	
-	/* the statistical stuff */
-	OID_GEN_XMIT_OK,
-	OID_GEN_RCV_OK,
-	OID_GEN_XMIT_ERROR,
-	OID_GEN_RCV_ERROR,
-	OID_GEN_RCV_NO_BUFFER,
-#ifdef	RNDIS_OPTIONAL_STATS
-	OID_GEN_DIRECTED_BYTES_XMIT,
-	OID_GEN_DIRECTED_FRAMES_XMIT,
-	OID_GEN_MULTICAST_BYTES_XMIT,
-	OID_GEN_MULTICAST_FRAMES_XMIT,
-	OID_GEN_BROADCAST_BYTES_XMIT,
-	OID_GEN_BROADCAST_FRAMES_XMIT,
-	OID_GEN_DIRECTED_BYTES_RCV,
-	OID_GEN_DIRECTED_FRAMES_RCV,
-	OID_GEN_MULTICAST_BYTES_RCV,
-	OID_GEN_MULTICAST_FRAMES_RCV,
-	OID_GEN_BROADCAST_BYTES_RCV,
-	OID_GEN_BROADCAST_FRAMES_RCV,
-	OID_GEN_RCV_CRC_ERROR,
-	OID_GEN_TRANSMIT_QUEUE_LENGTH,
-#endif	/* RNDIS_OPTIONAL_STATS */
-
-    	/* mandatory 802.3 */
-	/* the general stuff */
-	OID_802_3_PERMANENT_ADDRESS,
-	OID_802_3_CURRENT_ADDRESS,
-	OID_802_3_MULTICAST_LIST,
-	OID_802_3_MAC_OPTIONS,
-	OID_802_3_MAXIMUM_LIST_SIZE,
-	
-	/* the statistical stuff */
-	OID_802_3_RCV_ERROR_ALIGNMENT,
-	OID_802_3_XMIT_ONE_COLLISION,
-	OID_802_3_XMIT_MORE_COLLISIONS,
-#ifdef	RNDIS_OPTIONAL_STATS
-	OID_802_3_XMIT_DEFERRED,
-	OID_802_3_XMIT_MAX_COLLISIONS,
-	OID_802_3_RCV_OVERRUN,
-	OID_802_3_XMIT_UNDERRUN,
-	OID_802_3_XMIT_HEARTBEAT_FAILURE,
-	OID_802_3_XMIT_TIMES_CRS_LOST,
-	OID_802_3_XMIT_LATE_COLLISIONS,
-#endif	/* RNDIS_OPTIONAL_STATS */
-
-#ifdef	RNDIS_PM
-	/* PM and wakeup are mandatory for USB: */
-
-	/* power management */
-	OID_PNP_CAPABILITIES,
-	OID_PNP_QUERY_POWER,
-	OID_PNP_SET_POWER,
-
-	/* wake up host */
-	OID_PNP_ENABLE_WAKE_UP,
-	OID_PNP_ADD_WAKE_UP_PATTERN,
-	OID_PNP_REMOVE_WAKE_UP_PATTERN,
-#endif
-};
-
-
 typedef struct rndis_init_msg_type 
 {
 	__le32	MessageType;
@@ -309,15 +225,18 @@ typedef struct rndis_resp_t
 typedef struct rndis_params
 {
 	u8			confignr;
-	int			used;
+	u8			used;
+	u16			saved_filter;
 	enum rndis_state	state;
-	u32			filter;
 	u32			medium;
 	u32			speed;
 	u32			media_state;
+
 	const u8		*host_mac;
+	u16			*filter;
 	struct net_device 	*dev;
 	struct net_device_stats *stats;
+
 	u32			vendorID;
 	const char		*vendorDescr;
 	int 			(*ack) (struct net_device *);
@@ -329,7 +248,8 @@ int  rndis_msg_parser (u8 configNr, u8 *buf);
 int  rndis_register (int (*rndis_control_ack) (struct net_device *));
 void rndis_deregister (int configNr);
 int  rndis_set_param_dev (u8 configNr, struct net_device *dev,
-			 struct net_device_stats *stats);
+			 struct net_device_stats *stats,
+			 u16 *cdc_filter);
 int  rndis_set_param_vendor (u8 configNr, u32 vendorID, 
 			    const char *vendorDescr);
 int  rndis_set_param_medium (u8 configNr, u32 medium, u32 speed);
@@ -338,6 +258,7 @@ int rndis_rm_hdr (struct sk_buff *skb);
 u8   *rndis_get_next_response (int configNr, u32 *length);
 void rndis_free_response (int configNr, u8 *buf);
 
+void rndis_uninit (int configNr);
 int  rndis_signal_connect (int configNr);
 int  rndis_signal_disconnect (int configNr);
 int  rndis_state (int configNr);