rndis.c

h内核

			*((u32 *) resp + 6) = cpu_to_le32 (
				rndis_per_dev_params [configNr]
					.stats->multicast);
			retval = 0;
		} else {
			*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
			retval = 0;
		}
		break;
		
	case OID_GEN_BROADCAST_BYTES_RCV:
		DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].stats) {
			*((u32 *) resp + 6) = cpu_to_le32 (
				rndis_per_dev_params [configNr]
					.stats->rx_packets/42*255);
			retval = 0;
		} else {
			*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
			retval = 0;
		}
		break;
		
	case OID_GEN_BROADCAST_FRAMES_RCV:
		DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].stats) {
			*((u32 *) resp + 6) = cpu_to_le32 (
				rndis_per_dev_params [configNr]
					.stats->rx_packets/42);
			retval = 0;
		} else {
			*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
			retval = 0;
		}
		break;
		
	case OID_GEN_RCV_CRC_ERROR:
		DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].stats) {
			*((u32 *) resp + 6) = cpu_to_le32 (
				rndis_per_dev_params [configNr]
					.stats->rx_crc_errors);
			retval = 0;
		} else {
			*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
			retval = 0;
		}
		break;
		
	case OID_GEN_TRANSMIT_QUEUE_LENGTH:
		DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
		*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
		retval = 0;
		break;
#endif	/* RNDIS_OPTIONAL_STATS */

	/* ieee802.3 OIDs (table 4-3) */

	/* mandatory */
	case OID_802_3_PERMANENT_ADDRESS:
		DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].dev) {
			length = ETH_ALEN;
			memcpy ((u8 *) resp + 24,
				rndis_per_dev_params [configNr].host_mac,
				length);
			retval = 0;
		} else {
			*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
			retval = 0;
		}
		break;
		
	/* mandatory */
	case OID_802_3_CURRENT_ADDRESS:
		DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].dev) {
			length = ETH_ALEN;
			memcpy ((u8 *) resp + 24,
				rndis_per_dev_params [configNr].host_mac,
				length);
			retval = 0;
		}
		break;
		
	/* mandatory */
	case OID_802_3_MULTICAST_LIST:
		DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
		length = 4;
		/* Multicast base address only */
		*((u32 *) resp + 6) = __constant_cpu_to_le32 (0xE0000000);
		retval = 0;
		break;
		
	/* mandatory */
	case OID_802_3_MAXIMUM_LIST_SIZE:
		DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
		 length = 4;
		/* Multicast base address only */
		*((u32 *) resp + 6) = __constant_cpu_to_le32 (1);
		retval = 0;
		break;
		
	case OID_802_3_MAC_OPTIONS:
		DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
		break;

	/* ieee802.3 statistics OIDs (table 4-4) */

	/* mandatory */
	case OID_802_3_RCV_ERROR_ALIGNMENT:
		DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
		if (rndis_per_dev_params [configNr].stats)
		{
			length = 4;
			*((u32 *) resp + 6) = cpu_to_le32 (
				rndis_per_dev_params [configNr]
					.stats->rx_frame_errors);
			retval = 0;
		}
		break;
		
	/* mandatory */
	case OID_802_3_XMIT_ONE_COLLISION:
		DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
		length = 4;
		*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
		retval = 0;
		break;
		
	/* mandatory */
	case OID_802_3_XMIT_MORE_COLLISIONS:
		DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
		length = 4;
		*((u32 *) resp + 6) = __constant_cpu_to_le32 (0);
		retval = 0;
		break;
		
#ifdef	RNDIS_OPTIONAL_STATS
	case OID_802_3_XMIT_DEFERRED:
		DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_XMIT_MAX_COLLISIONS:
		DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_RCV_OVERRUN:
		DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_XMIT_UNDERRUN:
		DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_XMIT_HEARTBEAT_FAILURE:
		DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_XMIT_TIMES_CRS_LOST:
		DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
		/* TODO */
		break;
		
	case OID_802_3_XMIT_LATE_COLLISIONS:
		DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
		/* TODO */
		break;		
#endif	/* RNDIS_OPTIONAL_STATS */

#ifdef	RNDIS_PM
	/* power management OIDs (table 4-5) */
	case OID_PNP_CAPABILITIES:
		DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);

		/* just PM, and remote wakeup on link status change
		 * (not magic packet or pattern match)
		 */
		length = sizeof (struct NDIS_PNP_CAPABILITIES);
		memset (resp, 0, length);
		{
			struct NDIS_PNP_CAPABILITIES *caps = (void *) resp;

			caps->Flags = NDIS_DEVICE_WAKE_UP_ENABLE;
			caps->WakeUpCapabilities.MinLinkChangeWakeUp 
				 = NdisDeviceStateD3;

			/* FIXME then use usb_gadget_wakeup(), and
			 * set USB_CONFIG_ATT_WAKEUP in config desc
			 */
		}
		retval = 0;
		break;
	case OID_PNP_QUERY_POWER:
		DEBUG("%s: OID_PNP_QUERY_POWER\n", __FUNCTION__);
		/* sure, handle any power state that maps to USB suspend */
		retval = 0;
		break;
#endif

	default:
		printk (KERN_WARNING "%s: query unknown OID 0x%08X\n", 
			 __FUNCTION__, OID);
	}
	
	resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
	resp->InformationBufferLength = cpu_to_le32 (length);
	resp->MessageLength = cpu_to_le32 (24 + length);
	r->length = 24 + length;
	return retval;
}

static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len, 
			      rndis_resp_t *r)
{
	rndis_set_cmplt_type		*resp;
	int 				i, retval = -ENOTSUPP;
	struct rndis_params		*params;

	if (!r)
		return -ENOMEM;
	resp = (rndis_set_cmplt_type *) r->buf;
	if (!resp)
		return -ENOMEM;

	DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
	for (i = 0; i < buf_len; i += 16) {
		DEBUG ("%03d: "
			" %02x %02x %02x %02x"
			" %02x %02x %02x %02x"
			" %02x %02x %02x %02x"
			" %02x %02x %02x %02x"
			"\n",
			i,
			buf[i], buf [i+1],
				buf[i+2], buf[i+3],
			buf[i+4], buf [i+5],
				buf[i+6], buf[i+7],
			buf[i+8], buf [i+9],
				buf[i+10], buf[i+11],
			buf[i+12], buf [i+13],
				buf[i+14], buf[i+15]);
	}

	switch (OID) {
	case OID_GEN_CURRENT_PACKET_FILTER:
		params = &rndis_per_dev_params [configNr];
		retval = 0;

		/* FIXME use these NDIS_PACKET_TYPE_* bitflags to
		 * filter packets in hard_start_xmit()
		 * NDIS_PACKET_TYPE_x == CDC_PACKET_TYPE_x for x in:
		 *	PROMISCUOUS, DIRECTED,
		 *	MULTICAST, ALL_MULTICAST, BROADCAST
		 */
		params->filter = cpu_to_le32p((u32 *)buf);
		DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
			__FUNCTION__, params->filter);

		/* this call has a significant side effect:  it's
		 * what makes the packet flow start and stop, like
		 * activating the CDC Ethernet altsetting.
		 */
		if (params->filter) {
			params->state = RNDIS_DATA_INITIALIZED;
			netif_carrier_on(params->dev);
			if (netif_running(params->dev))
				netif_wake_queue (params->dev);
		} else {
			params->state = RNDIS_INITIALIZED;
			netif_carrier_off (params->dev);
			netif_stop_queue (params->dev);
		}
		break;
		
	case OID_802_3_MULTICAST_LIST:
		/* I think we can ignore this */		
		DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
		retval = 0;
		break;
#if 0
	case OID_GEN_RNDIS_CONFIG_PARAMETER:
		{
		struct rndis_config_parameter	*param;
		param = (struct rndis_config_parameter *) buf;
		DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
			__FUNCTION__,
			min(cpu_to_le32(param->ParameterNameLength),80),
			buf + param->ParameterNameOffset);
		retval = 0;
		}
		break;
#endif

#ifdef	RNDIS_PM
	case OID_PNP_SET_POWER:
		DEBUG ("OID_PNP_SET_POWER\n");
		/* sure, handle any power state that maps to USB suspend */
		retval = 0;
		break;

	case OID_PNP_ENABLE_WAKE_UP:
		/* always-connected ... */
		DEBUG ("OID_PNP_ENABLE_WAKE_UP\n");
		retval = 0;
		break;

	// no PM resume patterns supported (specified where?)
	// so OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN always fails
#endif

	default:
		printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n", 
			 __FUNCTION__, OID, buf_len);
	}
	
	return retval;
}

/* 
 * Response Functions 
 */

static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
{
	rndis_init_cmplt_type	*resp; 
	rndis_resp_t            *r;
	
	if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
	
	r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
	
	if (!r) return -ENOMEM;
	
	resp = (rndis_init_cmplt_type *) r->buf;
	
	if (!resp) return -ENOMEM;
	
	resp->MessageType = __constant_cpu_to_le32 (
			REMOTE_NDIS_INITIALIZE_CMPLT);
	resp->MessageLength = __constant_cpu_to_le32 (52);
	resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
	resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
	resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
	resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
	resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
	resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
	resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
	resp->MaxTransferSize = cpu_to_le32 (
		  rndis_per_dev_params [configNr].dev->mtu
		+ sizeof (struct ethhdr)
		+ sizeof (struct rndis_packet_msg_type)
		+ 22);
	resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
	resp->AFListOffset = __constant_cpu_to_le32 (0);
	resp->AFListSize = __constant_cpu_to_le32 (0);
	
	if (rndis_per_dev_params [configNr].ack)
	    rndis_per_dev_params [configNr].ack (
	    		rndis_per_dev_params [configNr].dev);
	
	return 0;
}

static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
{
	rndis_query_cmplt_type *resp;
	rndis_resp_t            *r;
	
	// DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
	if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
	
	/* 
	 * we need more memory: 
	 * oid_supported_list is the largest answer 
	 */
	r = rndis_add_response (configNr, sizeof (oid_supported_list));
	
	if (!r) return -ENOMEM;
	resp = (rndis_query_cmplt_type *) r->buf;
	
	if (!resp) return -ENOMEM;
	
	resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
	resp->MessageLength = __constant_cpu_to_le32 (24);
	resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
	
	if (gen_ndis_query_resp (configNr, cpu_to_le32 (buf->OID), r)) {
		/* OID not supported */
		resp->Status = __constant_cpu_to_le32 (
				RNDIS_STATUS_NOT_SUPPORTED);
		resp->InformationBufferLength = __constant_cpu_to_le32 (0);
		resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
	} else
		resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
	
	if (rndis_per_dev_params [configNr].ack)
	    rndis_per_dev_params [configNr].ack (
	    		rndis_per_dev_params [configNr].dev);
	return 0;
}

static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
{
	u32			BufLength, BufOffset;
	rndis_set_cmplt_type	*resp;
	rndis_resp_t		*r;
	
	r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
	
	if (!r) return -ENOMEM;
	resp = (rndis_set_cmplt_type *) r->buf;
	if (!resp) return -ENOMEM;

	BufLength = cpu_to_le32 (buf->InformationBufferLength);
	BufOffset = cpu_to_le32 (buf->InformationBufferOffset);

#ifdef	VERBOSE
	DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
	DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
	DEBUG("%s: InfoBuffer: ", __FUNCTION__);
	
	for (i = 0; i < BufLength; i++) {
		DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
	}
	
	DEBUG ("\n");
#endif
	
	resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
	resp->MessageLength = __constant_cpu_to_le32 (16);
	resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
	if (gen_ndis_set_resp (configNr, cpu_to_le32 (buf->OID), 
			       ((u8 *) buf) + 8 + BufOffset, BufLength, r))
	    resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
	else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
	
	if (rndis_per_dev_params [configNr].ack)
	    rndis_per_dev_params [configNr].ack (
	    		rndis_per_dev_params [configNr].dev);
	
	return 0;
}

static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
{
	rndis_reset_cmplt_type	*resp;
	rndis_resp_t		*r;
	
	r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
	
	if (!r) return -ENOMEM;
	resp = (rndis_reset_cmplt_type *) r->buf;
	if (!resp) return -ENOMEM;
	
	resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
	resp->MessageLength = __constant_cpu_to_le32 (16);
	resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
	/* resent information */
	resp->AddressingReset = __constant_cpu_to_le32 (1);
	
	if (rndis_per_dev_params [configNr].ack)
	    rndis_per_dev_params [configNr].ack (
	    		rndis_per_dev_params [configNr].dev);

	return 0;
}

static int rndis_keepalive_response (int configNr,
				     rndis_keepalive_msg_type *buf)
{