1194 lines
30 KiB
C
1194 lines
30 KiB
C
/*
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* RNDIS MSG parser
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*
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* Authors: Benedikt Spranger, Pengutronix
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* Robert Schwebel, Pengutronix
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2, as published by the Free Software Foundation.
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*
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* This software was originally developed in conformance with
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* Microsoft's Remote NDIS Specification License Agreement.
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*
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* 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
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* Fixed message length bug in init_response
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*
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* 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
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* Fixed rndis_rm_hdr length bug.
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*
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* Copyright (C) 2004 by David Brownell
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* updates to merge with Linux 2.6, better match RNDIS spec
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/proc_fs.h>
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#include <linux/slab.h>
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#include <linux/seq_file.h>
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#include <linux/netdevice.h>
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#include <asm/io.h>
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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#undef VERBOSE_DEBUG
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#include "rndis.h"
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/* The driver for your USB chip needs to support ep0 OUT to work with
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* RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
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*
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* Windows hosts need an INF file like Documentation/usb/linux.inf
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* and will be happier if you provide the host_addr module parameter.
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*/
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#if 0
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static int rndis_debug = 0;
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module_param (rndis_debug, int, 0);
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MODULE_PARM_DESC (rndis_debug, "enable debugging");
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#else
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#define rndis_debug 0
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#endif
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#define RNDIS_MAX_CONFIGS 1
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static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
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/* Driver Version */
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static const __le32 rndis_driver_version = cpu_to_le32(1);
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/* Function Prototypes */
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static rndis_resp_t *rndis_add_response(int configNr, u32 length);
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/* supported OIDs */
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static const u32 oid_supported_list[] =
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{
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/* the general stuff */
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RNDIS_OID_GEN_SUPPORTED_LIST,
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RNDIS_OID_GEN_HARDWARE_STATUS,
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RNDIS_OID_GEN_MEDIA_SUPPORTED,
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RNDIS_OID_GEN_MEDIA_IN_USE,
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RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE,
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RNDIS_OID_GEN_LINK_SPEED,
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RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE,
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RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE,
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RNDIS_OID_GEN_VENDOR_ID,
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RNDIS_OID_GEN_VENDOR_DESCRIPTION,
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RNDIS_OID_GEN_VENDOR_DRIVER_VERSION,
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RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
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RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE,
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RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
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RNDIS_OID_GEN_PHYSICAL_MEDIUM,
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/* the statistical stuff */
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RNDIS_OID_GEN_XMIT_OK,
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RNDIS_OID_GEN_RCV_OK,
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RNDIS_OID_GEN_XMIT_ERROR,
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RNDIS_OID_GEN_RCV_ERROR,
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RNDIS_OID_GEN_RCV_NO_BUFFER,
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#ifdef RNDIS_OPTIONAL_STATS
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RNDIS_OID_GEN_DIRECTED_BYTES_XMIT,
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RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT,
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RNDIS_OID_GEN_MULTICAST_BYTES_XMIT,
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RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT,
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RNDIS_OID_GEN_BROADCAST_BYTES_XMIT,
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RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT,
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RNDIS_OID_GEN_DIRECTED_BYTES_RCV,
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RNDIS_OID_GEN_DIRECTED_FRAMES_RCV,
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RNDIS_OID_GEN_MULTICAST_BYTES_RCV,
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RNDIS_OID_GEN_MULTICAST_FRAMES_RCV,
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RNDIS_OID_GEN_BROADCAST_BYTES_RCV,
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RNDIS_OID_GEN_BROADCAST_FRAMES_RCV,
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RNDIS_OID_GEN_RCV_CRC_ERROR,
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RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH,
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#endif /* RNDIS_OPTIONAL_STATS */
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/* mandatory 802.3 */
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/* the general stuff */
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RNDIS_OID_802_3_PERMANENT_ADDRESS,
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RNDIS_OID_802_3_CURRENT_ADDRESS,
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RNDIS_OID_802_3_MULTICAST_LIST,
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RNDIS_OID_802_3_MAC_OPTIONS,
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RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
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/* the statistical stuff */
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RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT,
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RNDIS_OID_802_3_XMIT_ONE_COLLISION,
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RNDIS_OID_802_3_XMIT_MORE_COLLISIONS,
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#ifdef RNDIS_OPTIONAL_STATS
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RNDIS_OID_802_3_XMIT_DEFERRED,
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RNDIS_OID_802_3_XMIT_MAX_COLLISIONS,
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RNDIS_OID_802_3_RCV_OVERRUN,
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RNDIS_OID_802_3_XMIT_UNDERRUN,
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RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE,
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RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST,
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RNDIS_OID_802_3_XMIT_LATE_COLLISIONS,
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#endif /* RNDIS_OPTIONAL_STATS */
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#ifdef RNDIS_PM
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/* PM and wakeup are "mandatory" for USB, but the RNDIS specs
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* don't say what they mean ... and the NDIS specs are often
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* confusing and/or ambiguous in this context. (That is, more
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* so than their specs for the other OIDs.)
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*
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* FIXME someone who knows what these should do, please
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* implement them!
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*/
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/* power management */
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OID_PNP_CAPABILITIES,
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OID_PNP_QUERY_POWER,
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OID_PNP_SET_POWER,
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#ifdef RNDIS_WAKEUP
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/* wake up host */
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OID_PNP_ENABLE_WAKE_UP,
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OID_PNP_ADD_WAKE_UP_PATTERN,
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OID_PNP_REMOVE_WAKE_UP_PATTERN,
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#endif /* RNDIS_WAKEUP */
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#endif /* RNDIS_PM */
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};
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/* NDIS Functions */
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static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
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unsigned buf_len, rndis_resp_t *r)
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{
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int retval = -ENOTSUPP;
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u32 length = 4; /* usually */
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__le32 *outbuf;
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int i, count;
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rndis_query_cmplt_type *resp;
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struct net_device *net;
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struct rtnl_link_stats64 temp;
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const struct rtnl_link_stats64 *stats;
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if (!r) return -ENOMEM;
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resp = (rndis_query_cmplt_type *)r->buf;
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if (!resp) return -ENOMEM;
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if (buf_len && rndis_debug > 1) {
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pr_debug("query OID %08x value, len %d:\n", OID, buf_len);
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for (i = 0; i < buf_len; i += 16) {
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pr_debug("%03d: %08x %08x %08x %08x\n", i,
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get_unaligned_le32(&buf[i]),
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get_unaligned_le32(&buf[i + 4]),
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get_unaligned_le32(&buf[i + 8]),
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get_unaligned_le32(&buf[i + 12]));
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}
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}
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/* response goes here, right after the header */
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outbuf = (__le32 *)&resp[1];
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resp->InformationBufferOffset = cpu_to_le32(16);
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net = rndis_per_dev_params[configNr].dev;
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stats = dev_get_stats(net, &temp);
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switch (OID) {
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/* general oids (table 4-1) */
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/* mandatory */
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case RNDIS_OID_GEN_SUPPORTED_LIST:
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pr_debug("%s: RNDIS_OID_GEN_SUPPORTED_LIST\n", __func__);
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length = sizeof(oid_supported_list);
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count = length / sizeof(u32);
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for (i = 0; i < count; i++)
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outbuf[i] = cpu_to_le32(oid_supported_list[i]);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_HARDWARE_STATUS:
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pr_debug("%s: RNDIS_OID_GEN_HARDWARE_STATUS\n", __func__);
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/* Bogus question!
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* Hardware must be ready to receive high level protocols.
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* BTW:
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* reddite ergo quae sunt Caesaris Caesari
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* et quae sunt Dei Deo!
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*/
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*outbuf = cpu_to_le32(0);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_MEDIA_SUPPORTED:
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pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__);
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*outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_MEDIA_IN_USE:
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pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__);
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/* one medium, one transport... (maybe you do it better) */
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*outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE:
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pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
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if (rndis_per_dev_params[configNr].dev) {
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*outbuf = cpu_to_le32(
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rndis_per_dev_params[configNr].dev->mtu);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_LINK_SPEED:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__);
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if (rndis_per_dev_params[configNr].media_state
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== RNDIS_MEDIA_STATE_DISCONNECTED)
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*outbuf = cpu_to_le32(0);
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else
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*outbuf = cpu_to_le32(
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rndis_per_dev_params[configNr].speed);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE:
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pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
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if (rndis_per_dev_params[configNr].dev) {
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*outbuf = cpu_to_le32(
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rndis_per_dev_params[configNr].dev->mtu);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE:
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pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
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if (rndis_per_dev_params[configNr].dev) {
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*outbuf = cpu_to_le32(
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rndis_per_dev_params[configNr].dev->mtu);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_VENDOR_ID:
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pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__);
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*outbuf = cpu_to_le32(
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rndis_per_dev_params[configNr].vendorID);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_VENDOR_DESCRIPTION:
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pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__);
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if (rndis_per_dev_params[configNr].vendorDescr) {
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length = strlen(rndis_per_dev_params[configNr].
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vendorDescr);
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memcpy(outbuf,
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rndis_per_dev_params[configNr].vendorDescr,
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length);
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} else {
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outbuf[0] = 0;
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}
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retval = 0;
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break;
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case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION:
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pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__);
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/* Created as LE */
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*outbuf = rndis_driver_version;
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
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pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
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*outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE:
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pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
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*outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
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*outbuf = cpu_to_le32(rndis_per_dev_params[configNr]
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.media_state);
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retval = 0;
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break;
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case RNDIS_OID_GEN_PHYSICAL_MEDIUM:
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pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__);
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*outbuf = cpu_to_le32(0);
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retval = 0;
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break;
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/* The RNDIS specification is incomplete/wrong. Some versions
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* of MS-Windows expect OIDs that aren't specified there. Other
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* versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
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*/
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case RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */
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pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__);
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*outbuf = cpu_to_le32(
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RNDIS_MAC_OPTION_RECEIVE_SERIALIZED
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| RNDIS_MAC_OPTION_FULL_DUPLEX);
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retval = 0;
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break;
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/* statistics OIDs (table 4-2) */
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/* mandatory */
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case RNDIS_OID_GEN_XMIT_OK:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__);
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if (stats) {
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*outbuf = cpu_to_le32(stats->tx_packets
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- stats->tx_errors - stats->tx_dropped);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_RCV_OK:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__);
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if (stats) {
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*outbuf = cpu_to_le32(stats->rx_packets
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- stats->rx_errors - stats->rx_dropped);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_XMIT_ERROR:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__);
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if (stats) {
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*outbuf = cpu_to_le32(stats->tx_errors);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_RCV_ERROR:
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if (rndis_debug > 1)
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pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__);
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if (stats) {
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*outbuf = cpu_to_le32(stats->rx_errors);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_GEN_RCV_NO_BUFFER:
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pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__);
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if (stats) {
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*outbuf = cpu_to_le32(stats->rx_dropped);
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retval = 0;
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}
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break;
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/* ieee802.3 OIDs (table 4-3) */
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/* mandatory */
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case RNDIS_OID_802_3_PERMANENT_ADDRESS:
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pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__);
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if (rndis_per_dev_params[configNr].dev) {
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length = ETH_ALEN;
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memcpy(outbuf,
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rndis_per_dev_params[configNr].host_mac,
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length);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_802_3_CURRENT_ADDRESS:
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pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__);
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if (rndis_per_dev_params[configNr].dev) {
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length = ETH_ALEN;
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memcpy(outbuf,
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rndis_per_dev_params [configNr].host_mac,
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length);
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retval = 0;
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}
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break;
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/* mandatory */
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case RNDIS_OID_802_3_MULTICAST_LIST:
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pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
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/* Multicast base address only */
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*outbuf = cpu_to_le32(0xE0000000);
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retval = 0;
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break;
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/* mandatory */
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case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE:
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pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__);
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/* Multicast base address only */
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*outbuf = cpu_to_le32(1);
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retval = 0;
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break;
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case RNDIS_OID_802_3_MAC_OPTIONS:
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pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__);
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*outbuf = cpu_to_le32(0);
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retval = 0;
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break;
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|
|
|
/* ieee802.3 statistics OIDs (table 4-4) */
|
|
|
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/* mandatory */
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|
case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT:
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pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__);
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|
if (stats) {
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*outbuf = cpu_to_le32(stats->rx_frame_errors);
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retval = 0;
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}
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break;
|
|
|
|
/* mandatory */
|
|
case RNDIS_OID_802_3_XMIT_ONE_COLLISION:
|
|
pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__);
|
|
*outbuf = cpu_to_le32(0);
|
|
retval = 0;
|
|
break;
|
|
|
|
/* mandatory */
|
|
case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS:
|
|
pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__);
|
|
*outbuf = cpu_to_le32(0);
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
pr_warning("%s: query unknown OID 0x%08X\n",
|
|
__func__, OID);
|
|
}
|
|
if (retval < 0)
|
|
length = 0;
|
|
|
|
resp->InformationBufferLength = cpu_to_le32(length);
|
|
r->length = length + sizeof(*resp);
|
|
resp->MessageLength = cpu_to_le32(r->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;
|
|
|
|
if (buf_len && rndis_debug > 1) {
|
|
pr_debug("set OID %08x value, len %d:\n", OID, buf_len);
|
|
for (i = 0; i < buf_len; i += 16) {
|
|
pr_debug("%03d: %08x %08x %08x %08x\n", i,
|
|
get_unaligned_le32(&buf[i]),
|
|
get_unaligned_le32(&buf[i + 4]),
|
|
get_unaligned_le32(&buf[i + 8]),
|
|
get_unaligned_le32(&buf[i + 12]));
|
|
}
|
|
}
|
|
|
|
params = &rndis_per_dev_params[configNr];
|
|
switch (OID) {
|
|
case RNDIS_OID_GEN_CURRENT_PACKET_FILTER:
|
|
|
|
/* these NDIS_PACKET_TYPE_* bitflags are shared with
|
|
* cdc_filter; it's not RNDIS-specific
|
|
* NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in:
|
|
* PROMISCUOUS, DIRECTED,
|
|
* MULTICAST, ALL_MULTICAST, BROADCAST
|
|
*/
|
|
*params->filter = (u16)get_unaligned_le32(buf);
|
|
pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n",
|
|
__func__, *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.
|
|
*/
|
|
retval = 0;
|
|
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 RNDIS_OID_802_3_MULTICAST_LIST:
|
|
/* I think we can ignore this */
|
|
pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__);
|
|
retval = 0;
|
|
break;
|
|
|
|
default:
|
|
pr_warning("%s: set unknown OID 0x%08X, size %d\n",
|
|
__func__, 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;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
if (!params->dev)
|
|
return -ENOTSUPP;
|
|
|
|
r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_init_cmplt_type *)r->buf;
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C);
|
|
resp->MessageLength = cpu_to_le32(52);
|
|
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
|
|
resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION);
|
|
resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION);
|
|
resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS);
|
|
resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3);
|
|
resp->MaxPacketsPerTransfer = cpu_to_le32(1);
|
|
resp->MaxTransferSize = cpu_to_le32(
|
|
params->dev->mtu
|
|
+ sizeof(struct ethhdr)
|
|
+ sizeof(struct rndis_packet_msg_type)
|
|
+ 22);
|
|
resp->PacketAlignmentFactor = cpu_to_le32(0);
|
|
resp->AFListOffset = cpu_to_le32(0);
|
|
resp->AFListSize = cpu_to_le32(0);
|
|
|
|
params->resp_avail(params->v);
|
|
return 0;
|
|
}
|
|
|
|
static int rndis_query_response(int configNr, rndis_query_msg_type *buf)
|
|
{
|
|
rndis_query_cmplt_type *resp;
|
|
rndis_resp_t *r;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
/* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */
|
|
if (!params->dev)
|
|
return -ENOTSUPP;
|
|
|
|
/*
|
|
* we need more memory:
|
|
* gen_ndis_query_resp expects enough space for
|
|
* rndis_query_cmplt_type followed by data.
|
|
* oid_supported_list is the largest data reply
|
|
*/
|
|
r = rndis_add_response(configNr,
|
|
sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_query_cmplt_type *)r->buf;
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C);
|
|
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
|
|
|
|
if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID),
|
|
le32_to_cpu(buf->InformationBufferOffset)
|
|
+ 8 + (u8 *)buf,
|
|
le32_to_cpu(buf->InformationBufferLength),
|
|
r)) {
|
|
/* OID not supported */
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
|
|
resp->MessageLength = cpu_to_le32(sizeof *resp);
|
|
resp->InformationBufferLength = cpu_to_le32(0);
|
|
resp->InformationBufferOffset = cpu_to_le32(0);
|
|
} else
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
|
|
|
|
params->resp_avail(params->v);
|
|
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;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_set_cmplt_type *)r->buf;
|
|
|
|
BufLength = le32_to_cpu(buf->InformationBufferLength);
|
|
BufOffset = le32_to_cpu(buf->InformationBufferOffset);
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
pr_debug("%s: Length: %d\n", __func__, BufLength);
|
|
pr_debug("%s: Offset: %d\n", __func__, BufOffset);
|
|
pr_debug("%s: InfoBuffer: ", __func__);
|
|
|
|
for (i = 0; i < BufLength; i++) {
|
|
pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
|
|
}
|
|
|
|
pr_debug("\n");
|
|
#endif
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C);
|
|
resp->MessageLength = cpu_to_le32(16);
|
|
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
|
|
if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID),
|
|
((u8 *)buf) + 8 + BufOffset, BufLength, r))
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED);
|
|
else
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
|
|
|
|
params->resp_avail(params->v);
|
|
return 0;
|
|
}
|
|
|
|
static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf)
|
|
{
|
|
rndis_reset_cmplt_type *resp;
|
|
rndis_resp_t *r;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_reset_cmplt_type *)r->buf;
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C);
|
|
resp->MessageLength = cpu_to_le32(16);
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
|
|
/* resent information */
|
|
resp->AddressingReset = cpu_to_le32(1);
|
|
|
|
params->resp_avail(params->v);
|
|
return 0;
|
|
}
|
|
|
|
static int rndis_keepalive_response(int configNr,
|
|
rndis_keepalive_msg_type *buf)
|
|
{
|
|
rndis_keepalive_cmplt_type *resp;
|
|
rndis_resp_t *r;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
/* host "should" check only in RNDIS_DATA_INITIALIZED state */
|
|
|
|
r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_keepalive_cmplt_type *)r->buf;
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C);
|
|
resp->MessageLength = cpu_to_le32(16);
|
|
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
|
|
resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS);
|
|
|
|
params->resp_avail(params->v);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Device to Host Comunication
|
|
*/
|
|
static int rndis_indicate_status_msg(int configNr, u32 status)
|
|
{
|
|
rndis_indicate_status_msg_type *resp;
|
|
rndis_resp_t *r;
|
|
struct rndis_params *params = rndis_per_dev_params + configNr;
|
|
|
|
if (params->state == RNDIS_UNINITIALIZED)
|
|
return -ENOTSUPP;
|
|
|
|
r = rndis_add_response(configNr,
|
|
sizeof(rndis_indicate_status_msg_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_indicate_status_msg_type *)r->buf;
|
|
|
|
resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE);
|
|
resp->MessageLength = cpu_to_le32(20);
|
|
resp->Status = cpu_to_le32(status);
|
|
resp->StatusBufferLength = cpu_to_le32(0);
|
|
resp->StatusBufferOffset = cpu_to_le32(0);
|
|
|
|
params->resp_avail(params->v);
|
|
return 0;
|
|
}
|
|
|
|
int rndis_signal_connect(int configNr)
|
|
{
|
|
rndis_per_dev_params[configNr].media_state
|
|
= RNDIS_MEDIA_STATE_CONNECTED;
|
|
return rndis_indicate_status_msg(configNr,
|
|
RNDIS_STATUS_MEDIA_CONNECT);
|
|
}
|
|
EXPORT_SYMBOL(rndis_signal_connect);
|
|
|
|
int rndis_signal_disconnect(int configNr)
|
|
{
|
|
rndis_per_dev_params[configNr].media_state
|
|
= RNDIS_MEDIA_STATE_DISCONNECTED;
|
|
return rndis_indicate_status_msg(configNr,
|
|
RNDIS_STATUS_MEDIA_DISCONNECT);
|
|
}
|
|
EXPORT_SYMBOL(rndis_signal_disconnect);
|
|
|
|
void rndis_uninit(int configNr)
|
|
{
|
|
u8 *buf;
|
|
u32 length;
|
|
|
|
if (configNr >= RNDIS_MAX_CONFIGS)
|
|
return;
|
|
rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED;
|
|
|
|
/* drain the response queue */
|
|
while ((buf = rndis_get_next_response(configNr, &length)))
|
|
rndis_free_response(configNr, buf);
|
|
}
|
|
EXPORT_SYMBOL(rndis_uninit);
|
|
|
|
void rndis_set_host_mac(int configNr, const u8 *addr)
|
|
{
|
|
rndis_per_dev_params[configNr].host_mac = addr;
|
|
}
|
|
EXPORT_SYMBOL(rndis_set_host_mac);
|
|
|
|
/*
|
|
* Message Parser
|
|
*/
|
|
int rndis_msg_parser(u8 configNr, u8 *buf)
|
|
{
|
|
u32 MsgType, MsgLength;
|
|
__le32 *tmp;
|
|
struct rndis_params *params;
|
|
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
tmp = (__le32 *)buf;
|
|
MsgType = get_unaligned_le32(tmp++);
|
|
MsgLength = get_unaligned_le32(tmp++);
|
|
|
|
if (configNr >= RNDIS_MAX_CONFIGS)
|
|
return -ENOTSUPP;
|
|
params = &rndis_per_dev_params[configNr];
|
|
|
|
/* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for
|
|
* rx/tx statistics and link status, in addition to KEEPALIVE traffic
|
|
* and normal HC level polling to see if there's any IN traffic.
|
|
*/
|
|
|
|
/* For USB: responses may take up to 10 seconds */
|
|
switch (MsgType) {
|
|
case RNDIS_MSG_INIT:
|
|
pr_debug("%s: RNDIS_MSG_INIT\n",
|
|
__func__);
|
|
params->state = RNDIS_INITIALIZED;
|
|
return rndis_init_response(configNr,
|
|
(rndis_init_msg_type *)buf);
|
|
|
|
case RNDIS_MSG_HALT:
|
|
pr_debug("%s: RNDIS_MSG_HALT\n",
|
|
__func__);
|
|
params->state = RNDIS_UNINITIALIZED;
|
|
if (params->dev) {
|
|
netif_carrier_off(params->dev);
|
|
netif_stop_queue(params->dev);
|
|
}
|
|
return 0;
|
|
|
|
case RNDIS_MSG_QUERY:
|
|
return rndis_query_response(configNr,
|
|
(rndis_query_msg_type *)buf);
|
|
|
|
case RNDIS_MSG_SET:
|
|
return rndis_set_response(configNr,
|
|
(rndis_set_msg_type *)buf);
|
|
|
|
case RNDIS_MSG_RESET:
|
|
pr_debug("%s: RNDIS_MSG_RESET\n",
|
|
__func__);
|
|
return rndis_reset_response(configNr,
|
|
(rndis_reset_msg_type *)buf);
|
|
|
|
case RNDIS_MSG_KEEPALIVE:
|
|
/* For USB: host does this every 5 seconds */
|
|
if (rndis_debug > 1)
|
|
pr_debug("%s: RNDIS_MSG_KEEPALIVE\n",
|
|
__func__);
|
|
return rndis_keepalive_response(configNr,
|
|
(rndis_keepalive_msg_type *)
|
|
buf);
|
|
|
|
default:
|
|
/* At least Windows XP emits some undefined RNDIS messages.
|
|
* In one case those messages seemed to relate to the host
|
|
* suspending itself.
|
|
*/
|
|
pr_warning("%s: unknown RNDIS message 0x%08X len %d\n",
|
|
__func__, MsgType, MsgLength);
|
|
print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET,
|
|
buf, MsgLength);
|
|
break;
|
|
}
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(rndis_msg_parser);
|
|
|
|
int rndis_register(void (*resp_avail)(void *v), void *v)
|
|
{
|
|
u8 i;
|
|
|
|
if (!resp_avail)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
|
|
if (!rndis_per_dev_params[i].used) {
|
|
rndis_per_dev_params[i].used = 1;
|
|
rndis_per_dev_params[i].resp_avail = resp_avail;
|
|
rndis_per_dev_params[i].v = v;
|
|
pr_debug("%s: configNr = %d\n", __func__, i);
|
|
return i;
|
|
}
|
|
}
|
|
pr_debug("failed\n");
|
|
|
|
return -ENODEV;
|
|
}
|
|
EXPORT_SYMBOL(rndis_register);
|
|
|
|
void rndis_deregister(int configNr)
|
|
{
|
|
pr_debug("%s:\n", __func__);
|
|
|
|
if (configNr >= RNDIS_MAX_CONFIGS) return;
|
|
rndis_per_dev_params[configNr].used = 0;
|
|
}
|
|
EXPORT_SYMBOL(rndis_deregister);
|
|
|
|
int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter)
|
|
{
|
|
pr_debug("%s:\n", __func__);
|
|
if (!dev)
|
|
return -EINVAL;
|
|
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
|
|
|
|
rndis_per_dev_params[configNr].dev = dev;
|
|
rndis_per_dev_params[configNr].filter = cdc_filter;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(rndis_set_param_dev);
|
|
|
|
int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
|
|
{
|
|
pr_debug("%s:\n", __func__);
|
|
if (!vendorDescr) return -1;
|
|
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
|
|
|
|
rndis_per_dev_params[configNr].vendorID = vendorID;
|
|
rndis_per_dev_params[configNr].vendorDescr = vendorDescr;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(rndis_set_param_vendor);
|
|
|
|
int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
|
|
{
|
|
pr_debug("%s: %u %u\n", __func__, medium, speed);
|
|
if (configNr >= RNDIS_MAX_CONFIGS) return -1;
|
|
|
|
rndis_per_dev_params[configNr].medium = medium;
|
|
rndis_per_dev_params[configNr].speed = speed;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(rndis_set_param_medium);
|
|
|
|
void rndis_add_hdr(struct sk_buff *skb)
|
|
{
|
|
struct rndis_packet_msg_type *header;
|
|
|
|
if (!skb)
|
|
return;
|
|
header = (void *)skb_push(skb, sizeof(*header));
|
|
memset(header, 0, sizeof *header);
|
|
header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET);
|
|
header->MessageLength = cpu_to_le32(skb->len);
|
|
header->DataOffset = cpu_to_le32(36);
|
|
header->DataLength = cpu_to_le32(skb->len - sizeof(*header));
|
|
}
|
|
EXPORT_SYMBOL(rndis_add_hdr);
|
|
|
|
void rndis_free_response(int configNr, u8 *buf)
|
|
{
|
|
rndis_resp_t *r;
|
|
struct list_head *act, *tmp;
|
|
|
|
list_for_each_safe(act, tmp,
|
|
&(rndis_per_dev_params[configNr].resp_queue))
|
|
{
|
|
r = list_entry(act, rndis_resp_t, list);
|
|
if (r && r->buf == buf) {
|
|
list_del(&r->list);
|
|
kfree(r);
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(rndis_free_response);
|
|
|
|
u8 *rndis_get_next_response(int configNr, u32 *length)
|
|
{
|
|
rndis_resp_t *r;
|
|
struct list_head *act, *tmp;
|
|
|
|
if (!length) return NULL;
|
|
|
|
list_for_each_safe(act, tmp,
|
|
&(rndis_per_dev_params[configNr].resp_queue))
|
|
{
|
|
r = list_entry(act, rndis_resp_t, list);
|
|
if (!r->send) {
|
|
r->send = 1;
|
|
*length = r->length;
|
|
return r->buf;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(rndis_get_next_response);
|
|
|
|
static rndis_resp_t *rndis_add_response(int configNr, u32 length)
|
|
{
|
|
rndis_resp_t *r;
|
|
|
|
/* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */
|
|
r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC);
|
|
if (!r) return NULL;
|
|
|
|
r->buf = (u8 *)(r + 1);
|
|
r->length = length;
|
|
r->send = 0;
|
|
|
|
list_add_tail(&r->list,
|
|
&(rndis_per_dev_params[configNr].resp_queue));
|
|
return r;
|
|
}
|
|
|
|
int rndis_rm_hdr(struct gether *port,
|
|
struct sk_buff *skb,
|
|
struct sk_buff_head *list)
|
|
{
|
|
/* tmp points to a struct rndis_packet_msg_type */
|
|
__le32 *tmp = (void *)skb->data;
|
|
|
|
/* MessageType, MessageLength */
|
|
if (cpu_to_le32(RNDIS_MSG_PACKET)
|
|
!= get_unaligned(tmp++)) {
|
|
dev_kfree_skb_any(skb);
|
|
return -EINVAL;
|
|
}
|
|
tmp++;
|
|
|
|
/* DataOffset, DataLength */
|
|
if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) {
|
|
dev_kfree_skb_any(skb);
|
|
return -EOVERFLOW;
|
|
}
|
|
skb_trim(skb, get_unaligned_le32(tmp++));
|
|
|
|
skb_queue_tail(list, skb);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(rndis_rm_hdr);
|
|
|
|
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
|
|
|
|
static int rndis_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
rndis_params *param = m->private;
|
|
|
|
seq_printf(m,
|
|
"Config Nr. %d\n"
|
|
"used : %s\n"
|
|
"state : %s\n"
|
|
"medium : 0x%08X\n"
|
|
"speed : %d\n"
|
|
"cable : %s\n"
|
|
"vendor ID : 0x%08X\n"
|
|
"vendor : %s\n",
|
|
param->confignr, (param->used) ? "y" : "n",
|
|
({ char *s = "?";
|
|
switch (param->state) {
|
|
case RNDIS_UNINITIALIZED:
|
|
s = "RNDIS_UNINITIALIZED"; break;
|
|
case RNDIS_INITIALIZED:
|
|
s = "RNDIS_INITIALIZED"; break;
|
|
case RNDIS_DATA_INITIALIZED:
|
|
s = "RNDIS_DATA_INITIALIZED"; break;
|
|
}; s; }),
|
|
param->medium,
|
|
(param->media_state) ? 0 : param->speed*100,
|
|
(param->media_state) ? "disconnected" : "connected",
|
|
param->vendorID, param->vendorDescr);
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t rndis_proc_write(struct file *file, const char __user *buffer,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
rndis_params *p = PDE_DATA(file_inode(file));
|
|
u32 speed = 0;
|
|
int i, fl_speed = 0;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
char c;
|
|
if (get_user(c, buffer))
|
|
return -EFAULT;
|
|
switch (c) {
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
fl_speed = 1;
|
|
speed = speed * 10 + c - '0';
|
|
break;
|
|
case 'C':
|
|
case 'c':
|
|
rndis_signal_connect(p->confignr);
|
|
break;
|
|
case 'D':
|
|
case 'd':
|
|
rndis_signal_disconnect(p->confignr);
|
|
break;
|
|
default:
|
|
if (fl_speed) p->speed = speed;
|
|
else pr_debug("%c is not valid\n", c);
|
|
break;
|
|
}
|
|
|
|
buffer++;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static int rndis_proc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, rndis_proc_show, PDE_DATA(inode));
|
|
}
|
|
|
|
static const struct file_operations rndis_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = rndis_proc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
.write = rndis_proc_write,
|
|
};
|
|
|
|
#define NAME_TEMPLATE "driver/rndis-%03d"
|
|
|
|
static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
|
|
|
|
#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
|
|
|
|
|
|
int rndis_init(void)
|
|
{
|
|
u8 i;
|
|
|
|
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
|
|
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
|
|
char name [20];
|
|
|
|
sprintf(name, NAME_TEMPLATE, i);
|
|
rndis_connect_state[i] = proc_create_data(name, 0660, NULL,
|
|
&rndis_proc_fops,
|
|
(void *)(rndis_per_dev_params + i));
|
|
if (!rndis_connect_state[i]) {
|
|
pr_debug("%s: remove entries", __func__);
|
|
while (i) {
|
|
sprintf(name, NAME_TEMPLATE, --i);
|
|
remove_proc_entry(name, NULL);
|
|
}
|
|
pr_debug("\n");
|
|
return -EIO;
|
|
}
|
|
#endif
|
|
rndis_per_dev_params[i].confignr = i;
|
|
rndis_per_dev_params[i].used = 0;
|
|
rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED;
|
|
rndis_per_dev_params[i].media_state
|
|
= RNDIS_MEDIA_STATE_DISCONNECTED;
|
|
INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
module_init(rndis_init);
|
|
|
|
void rndis_exit(void)
|
|
{
|
|
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
|
|
u8 i;
|
|
char name[20];
|
|
|
|
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
|
|
sprintf(name, NAME_TEMPLATE, i);
|
|
remove_proc_entry(name, NULL);
|
|
}
|
|
#endif
|
|
}
|
|
module_exit(rndis_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|