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1308 lines
32 KiB
C
1308 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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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 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 <common.h>
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#include <log.h>
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#include <net.h>
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#include <malloc.h>
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <asm/byteorder.h>
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#include <asm/unaligned.h>
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#include <linux/errno.h>
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#undef RNDIS_PM
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#undef RNDIS_WAKEUP
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#undef VERBOSE
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#include "rndis.h"
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/*
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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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#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 = __constant_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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/* the general stuff */
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OID_GEN_SUPPORTED_LIST,
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OID_GEN_HARDWARE_STATUS,
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OID_GEN_MEDIA_SUPPORTED,
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OID_GEN_MEDIA_IN_USE,
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OID_GEN_MAXIMUM_FRAME_SIZE,
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OID_GEN_LINK_SPEED,
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OID_GEN_TRANSMIT_BLOCK_SIZE,
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OID_GEN_RECEIVE_BLOCK_SIZE,
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OID_GEN_VENDOR_ID,
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OID_GEN_VENDOR_DESCRIPTION,
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OID_GEN_VENDOR_DRIVER_VERSION,
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OID_GEN_CURRENT_PACKET_FILTER,
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OID_GEN_MAXIMUM_TOTAL_SIZE,
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OID_GEN_MEDIA_CONNECT_STATUS,
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OID_GEN_PHYSICAL_MEDIUM,
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#if 0
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OID_GEN_RNDIS_CONFIG_PARAMETER,
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#endif
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/* the statistical stuff */
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OID_GEN_XMIT_OK,
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OID_GEN_RCV_OK,
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OID_GEN_XMIT_ERROR,
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OID_GEN_RCV_ERROR,
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OID_GEN_RCV_NO_BUFFER,
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#ifdef RNDIS_OPTIONAL_STATS
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OID_GEN_DIRECTED_BYTES_XMIT,
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OID_GEN_DIRECTED_FRAMES_XMIT,
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OID_GEN_MULTICAST_BYTES_XMIT,
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OID_GEN_MULTICAST_FRAMES_XMIT,
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OID_GEN_BROADCAST_BYTES_XMIT,
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OID_GEN_BROADCAST_FRAMES_XMIT,
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OID_GEN_DIRECTED_BYTES_RCV,
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OID_GEN_DIRECTED_FRAMES_RCV,
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OID_GEN_MULTICAST_BYTES_RCV,
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OID_GEN_MULTICAST_FRAMES_RCV,
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OID_GEN_BROADCAST_BYTES_RCV,
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OID_GEN_BROADCAST_FRAMES_RCV,
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OID_GEN_RCV_CRC_ERROR,
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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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OID_802_3_PERMANENT_ADDRESS,
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OID_802_3_CURRENT_ADDRESS,
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OID_802_3_MULTICAST_LIST,
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OID_802_3_MAC_OPTIONS,
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OID_802_3_MAXIMUM_LIST_SIZE,
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/* the statistical stuff */
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OID_802_3_RCV_ERROR_ALIGNMENT,
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OID_802_3_XMIT_ONE_COLLISION,
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OID_802_3_XMIT_MORE_COLLISIONS,
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#ifdef RNDIS_OPTIONAL_STATS
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OID_802_3_XMIT_DEFERRED,
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OID_802_3_XMIT_MAX_COLLISIONS,
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OID_802_3_RCV_OVERRUN,
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OID_802_3_XMIT_UNDERRUN,
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OID_802_3_XMIT_HEARTBEAT_FAILURE,
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OID_802_3_XMIT_TIMES_CRS_LOST,
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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: */
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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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rndis_params *params;
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if (!r)
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return -ENOMEM;
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resp = (rndis_query_cmplt_type *) r->buf;
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if (!resp)
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return -ENOMEM;
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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if (buf_len) {
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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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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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#endif
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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 = __constant_cpu_to_le32(16);
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params = &rndis_per_dev_params[configNr];
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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 OID_GEN_SUPPORTED_LIST:
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debug("%s: 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 OID_GEN_HARDWARE_STATUS:
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debug("%s: OID_GEN_HARDWARE_STATUS\n", __func__);
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/*
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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 = __constant_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 OID_GEN_MEDIA_SUPPORTED:
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debug("%s: OID_GEN_MEDIA_SUPPORTED\n", __func__);
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*outbuf = cpu_to_le32(params->medium);
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retval = 0;
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break;
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/* mandatory */
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case OID_GEN_MEDIA_IN_USE:
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debug("%s: 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(params->medium);
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retval = 0;
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break;
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/* mandatory */
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case OID_GEN_MAXIMUM_FRAME_SIZE:
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debug("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
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if (params->dev) {
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*outbuf = cpu_to_le32(params->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 OID_GEN_LINK_SPEED:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_LINK_SPEED\n", __func__);
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#endif
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if (params->media_state == NDIS_MEDIA_STATE_DISCONNECTED)
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*outbuf = __constant_cpu_to_le32(0);
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else
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*outbuf = cpu_to_le32(params->speed);
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retval = 0;
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break;
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/* mandatory */
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case OID_GEN_TRANSMIT_BLOCK_SIZE:
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debug("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
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if (params->dev) {
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*outbuf = cpu_to_le32(params->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 OID_GEN_RECEIVE_BLOCK_SIZE:
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debug("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
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if (params->dev) {
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*outbuf = cpu_to_le32(params->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 OID_GEN_VENDOR_ID:
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debug("%s: OID_GEN_VENDOR_ID\n", __func__);
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*outbuf = cpu_to_le32(params->vendorID);
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retval = 0;
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break;
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/* mandatory */
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case OID_GEN_VENDOR_DESCRIPTION:
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debug("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__);
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length = strlen(params->vendorDescr);
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memcpy(outbuf, params->vendorDescr, length);
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retval = 0;
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break;
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case OID_GEN_VENDOR_DRIVER_VERSION:
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debug("%s: 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 OID_GEN_CURRENT_PACKET_FILTER:
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debug("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
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*outbuf = cpu_to_le32(*params->filter);
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retval = 0;
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break;
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/* mandatory */
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case OID_GEN_MAXIMUM_TOTAL_SIZE:
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debug("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
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*outbuf = __constant_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 OID_GEN_MEDIA_CONNECT_STATUS:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
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#endif
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*outbuf = cpu_to_le32(params->media_state);
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retval = 0;
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break;
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case OID_GEN_PHYSICAL_MEDIUM:
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debug("%s: OID_GEN_PHYSICAL_MEDIUM\n", __func__);
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*outbuf = __constant_cpu_to_le32(0);
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retval = 0;
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break;
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/*
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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 OID_GEN_MAC_OPTIONS: /* from WinME */
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debug("%s: OID_GEN_MAC_OPTIONS\n", __func__);
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*outbuf = __constant_cpu_to_le32(
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NDIS_MAC_OPTION_RECEIVE_SERIALIZED
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| NDIS_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 OID_GEN_XMIT_OK:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_XMIT_OK\n", __func__);
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#endif
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if (params->stats) {
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*outbuf = cpu_to_le32(
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params->stats->tx_packets -
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params->stats->tx_errors -
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params->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 OID_GEN_RCV_OK:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_RCV_OK\n", __func__);
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#endif
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if (params->stats) {
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*outbuf = cpu_to_le32(
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params->stats->rx_packets -
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params->stats->rx_errors -
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params->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 OID_GEN_XMIT_ERROR:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_XMIT_ERROR\n", __func__);
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#endif
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if (params->stats) {
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*outbuf = cpu_to_le32(params->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 OID_GEN_RCV_ERROR:
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#if defined(DEBUG) && defined(DEBUG_VERBOSE)
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debug("%s: OID_GEN_RCV_ERROR\n", __func__);
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#endif
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if (params->stats) {
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*outbuf = cpu_to_le32(params->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 OID_GEN_RCV_NO_BUFFER:
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debug("%s: OID_GEN_RCV_NO_BUFFER\n", __func__);
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if (params->stats) {
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*outbuf = cpu_to_le32(params->stats->rx_dropped);
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retval = 0;
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}
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break;
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#ifdef RNDIS_OPTIONAL_STATS
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case OID_GEN_DIRECTED_BYTES_XMIT:
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debug("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __func__);
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/*
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* Aunt Tilly's size of shoes
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* minus antarctica count of penguins
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* divided by weight of Alpha Centauri
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*/
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if (params->stats) {
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*outbuf = cpu_to_le32(
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(params->stats->tx_packets -
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params->stats->tx_errors -
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params->stats->tx_dropped)
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* 123);
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retval = 0;
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}
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break;
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case OID_GEN_DIRECTED_FRAMES_XMIT:
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debug("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __func__);
|
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/* dito */
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if (params->stats) {
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*outbuf = cpu_to_le32(
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(params->stats->tx_packets -
|
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params->stats->tx_errors -
|
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params->stats->tx_dropped)
|
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/ 123);
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retval = 0;
|
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}
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break;
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|
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case OID_GEN_MULTICAST_BYTES_XMIT:
|
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debug("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->multicast * 1234);
|
|
retval = 0;
|
|
}
|
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break;
|
|
|
|
case OID_GEN_MULTICAST_FRAMES_XMIT:
|
|
debug("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->multicast);
|
|
retval = 0;
|
|
}
|
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break;
|
|
|
|
case OID_GEN_BROADCAST_BYTES_XMIT:
|
|
debug("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->tx_packets/42*255);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_BROADCAST_FRAMES_XMIT:
|
|
debug("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->tx_packets / 42);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_DIRECTED_BYTES_RCV:
|
|
debug("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __func__);
|
|
*outbuf = __constant_cpu_to_le32(0);
|
|
retval = 0;
|
|
break;
|
|
|
|
case OID_GEN_DIRECTED_FRAMES_RCV:
|
|
debug("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __func__);
|
|
*outbuf = __constant_cpu_to_le32(0);
|
|
retval = 0;
|
|
break;
|
|
|
|
case OID_GEN_MULTICAST_BYTES_RCV:
|
|
debug("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->multicast * 1111);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_MULTICAST_FRAMES_RCV:
|
|
debug("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->multicast);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_BROADCAST_BYTES_RCV:
|
|
debug("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->rx_packets/42*255);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_BROADCAST_FRAMES_RCV:
|
|
debug("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->rx_packets / 42);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_RCV_CRC_ERROR:
|
|
debug("%s: OID_GEN_RCV_CRC_ERROR\n", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->rx_crc_errors);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
case OID_GEN_TRANSMIT_QUEUE_LENGTH:
|
|
debug("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __func__);
|
|
*outbuf = __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", __func__);
|
|
if (params->dev) {
|
|
length = ETH_ALEN;
|
|
memcpy(outbuf, params->host_mac, length);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
/* mandatory */
|
|
case OID_802_3_CURRENT_ADDRESS:
|
|
debug("%s: OID_802_3_CURRENT_ADDRESS\n", __func__);
|
|
if (params->dev) {
|
|
length = ETH_ALEN;
|
|
memcpy(outbuf, params->host_mac, length);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
/* mandatory */
|
|
case OID_802_3_MULTICAST_LIST:
|
|
debug("%s: OID_802_3_MULTICAST_LIST\n", __func__);
|
|
/* Multicast base address only */
|
|
*outbuf = __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", __func__);
|
|
/* Multicast base address only */
|
|
*outbuf = __constant_cpu_to_le32(1);
|
|
retval = 0;
|
|
break;
|
|
|
|
case OID_802_3_MAC_OPTIONS:
|
|
debug("%s: OID_802_3_MAC_OPTIONS\n", __func__);
|
|
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", __func__);
|
|
if (params->stats) {
|
|
*outbuf = cpu_to_le32(params->stats->rx_frame_errors);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
|
|
/* mandatory */
|
|
case OID_802_3_XMIT_ONE_COLLISION:
|
|
debug("%s: OID_802_3_XMIT_ONE_COLLISION\n", __func__);
|
|
*outbuf = __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", __func__);
|
|
*outbuf = __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", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_XMIT_MAX_COLLISIONS:
|
|
debug("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_RCV_OVERRUN:
|
|
debug("%s: OID_802_3_RCV_OVERRUN\n", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_XMIT_UNDERRUN:
|
|
debug("%s: OID_802_3_XMIT_UNDERRUN\n", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_XMIT_HEARTBEAT_FAILURE:
|
|
debug("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_XMIT_TIMES_CRS_LOST:
|
|
debug("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __func__);
|
|
/* TODO */
|
|
break;
|
|
|
|
case OID_802_3_XMIT_LATE_COLLISIONS:
|
|
debug("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __func__);
|
|
/* 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", __func__);
|
|
|
|
/* for now, no wakeup capabilities */
|
|
length = sizeof(struct NDIS_PNP_CAPABILITIES);
|
|
memset(outbuf, 0, length);
|
|
retval = 0;
|
|
break;
|
|
case OID_PNP_QUERY_POWER:
|
|
debug("%s: OID_PNP_QUERY_POWER D%d\n", __func__,
|
|
get_unaligned_le32(buf) - 1);
|
|
/*
|
|
* only suspend is a real power state, and
|
|
* it can't be entered by OID_PNP_SET_POWER...
|
|
*/
|
|
length = 0;
|
|
retval = 0;
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
debug("%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 retval = -ENOTSUPP;
|
|
struct rndis_params *params;
|
|
#if (defined(DEBUG) && defined(DEBUG_VERBOSE)) || defined(RNDIS_PM)
|
|
int i;
|
|
#endif
|
|
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_set_cmplt_type *) r->buf;
|
|
if (!resp)
|
|
return -ENOMEM;
|
|
|
|
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
|
|
if (buf_len) {
|
|
debug("set OID %08x value, len %d:\n", OID, buf_len);
|
|
for (i = 0; i < buf_len; i += 16) {
|
|
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]));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
params = &rndis_per_dev_params[configNr];
|
|
switch (OID) {
|
|
case 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);
|
|
debug("%s: 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.
|
|
*/
|
|
#ifdef RNDIS_PM
|
|
update_linkstate:
|
|
#endif
|
|
retval = 0;
|
|
if (*params->filter)
|
|
params->state = RNDIS_DATA_INITIALIZED;
|
|
else
|
|
params->state = RNDIS_INITIALIZED;
|
|
break;
|
|
|
|
case OID_802_3_MULTICAST_LIST:
|
|
/* I think we can ignore this */
|
|
debug("%s: OID_802_3_MULTICAST_LIST\n", __func__);
|
|
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",
|
|
__func__,
|
|
min(cpu_to_le32(param->ParameterNameLength), 80),
|
|
buf + param->ParameterNameOffset);
|
|
retval = 0;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef RNDIS_PM
|
|
case OID_PNP_SET_POWER:
|
|
/*
|
|
* The only real power state is USB suspend, and RNDIS requests
|
|
* can't enter it; this one isn't really about power. After
|
|
* resuming, Windows forces a reset, and then SET_POWER D0.
|
|
* FIXME ... then things go batty; Windows wedges itself.
|
|
*/
|
|
i = get_unaligned_le32(buf);
|
|
debug("%s: OID_PNP_SET_POWER D%d\n", __func__, i - 1);
|
|
switch (i) {
|
|
case NdisDeviceStateD0:
|
|
*params->filter = params->saved_filter;
|
|
goto update_linkstate;
|
|
case NdisDeviceStateD3:
|
|
case NdisDeviceStateD2:
|
|
case NdisDeviceStateD1:
|
|
params->saved_filter = *params->filter;
|
|
retval = 0;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
#ifdef RNDIS_WAKEUP
|
|
/*
|
|
* no wakeup support advertised, so wakeup OIDs always fail:
|
|
* - OID_PNP_ENABLE_WAKE_UP
|
|
* - OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN
|
|
*/
|
|
#endif
|
|
|
|
#endif /* RNDIS_PM */
|
|
|
|
default:
|
|
debug("%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;
|
|
|
|
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;
|
|
|
|
resp->MessageType = __constant_cpu_to_le32(
|
|
REMOTE_NDIS_INITIALIZE_CMPLT);
|
|
resp->MessageLength = __constant_cpu_to_le32(52);
|
|
resp->RequestID = get_unaligned(&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].mtu
|
|
+ ETHER_HDR_SIZE
|
|
+ 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", __func__, get_unaligned_le32(&buf->OID));
|
|
if (!rndis_per_dev_params[configNr].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 = __constant_cpu_to_le32(REMOTE_NDIS_QUERY_CMPLT);
|
|
resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
|
|
|
|
if (gen_ndis_query_resp(configNr, get_unaligned_le32(&buf->OID),
|
|
get_unaligned_le32(&buf->InformationBufferOffset)
|
|
+ 8 + (u8 *) buf,
|
|
get_unaligned_le32(&buf->InformationBufferLength),
|
|
r)) {
|
|
/* OID not supported */
|
|
resp->Status = __constant_cpu_to_le32(
|
|
RNDIS_STATUS_NOT_SUPPORTED);
|
|
resp->MessageLength = __constant_cpu_to_le32(sizeof *resp);
|
|
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;
|
|
|
|
BufLength = get_unaligned_le32(&buf->InformationBufferLength);
|
|
BufOffset = get_unaligned_le32(&buf->InformationBufferOffset);
|
|
if ((BufOffset > RNDIS_MAX_TOTAL_SIZE - 8) ||
|
|
(BufLength > RNDIS_MAX_TOTAL_SIZE - 8 - BufOffset))
|
|
return -EINVAL;
|
|
|
|
r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
|
|
if (!r)
|
|
return -ENOMEM;
|
|
resp = (rndis_set_cmplt_type *) r->buf;
|
|
|
|
#ifdef VERBOSE
|
|
debug("%s: Length: %d\n", __func__, BufLength);
|
|
debug("%s: Offset: %d\n", __func__, BufOffset);
|
|
debug("%s: InfoBuffer: ", __func__);
|
|
|
|
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 = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
|
|
if (gen_ndis_set_resp(configNr, get_unaligned_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;
|
|
|
|
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)
|
|
{
|
|
rndis_keepalive_cmplt_type *resp;
|
|
rndis_resp_t *r;
|
|
|
|
/* 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 = __constant_cpu_to_le32(
|
|
REMOTE_NDIS_KEEPALIVE_CMPLT);
|
|
resp->MessageLength = __constant_cpu_to_le32(16);
|
|
resp->RequestID = get_unaligned(&buf->RequestID); /* Still LE in msg buffer */
|
|
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;
|
|
}
|
|
|
|
|
|
/*
|
|
* Device to Host Comunication
|
|
*/
|
|
static int rndis_indicate_status_msg(int configNr, u32 status)
|
|
{
|
|
rndis_indicate_status_msg_type *resp;
|
|
rndis_resp_t *r;
|
|
|
|
if (rndis_per_dev_params[configNr].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 = __constant_cpu_to_le32(
|
|
REMOTE_NDIS_INDICATE_STATUS_MSG);
|
|
resp->MessageLength = __constant_cpu_to_le32(20);
|
|
resp->Status = cpu_to_le32(status);
|
|
resp->StatusBufferLength = __constant_cpu_to_le32(0);
|
|
resp->StatusBufferOffset = __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;
|
|
}
|
|
|
|
int rndis_signal_connect(int configNr)
|
|
{
|
|
rndis_per_dev_params[configNr].media_state
|
|
= NDIS_MEDIA_STATE_CONNECTED;
|
|
return rndis_indicate_status_msg(configNr,
|
|
RNDIS_STATUS_MEDIA_CONNECT);
|
|
}
|
|
|
|
int rndis_signal_disconnect(int configNr)
|
|
{
|
|
rndis_per_dev_params[configNr].media_state
|
|
= NDIS_MEDIA_STATE_DISCONNECTED;
|
|
|
|
#ifdef RNDIS_COMPLETE_SIGNAL_DISCONNECT
|
|
return rndis_indicate_status_msg(configNr,
|
|
RNDIS_STATUS_MEDIA_DISCONNECT);
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
void rndis_uninit(int configNr)
|
|
{
|
|
u8 *buf;
|
|
u32 length;
|
|
|
|
if (configNr >= RNDIS_MAX_CONFIGS)
|
|
return;
|
|
rndis_per_dev_params[configNr].used = 0;
|
|
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);
|
|
}
|
|
|
|
void rndis_set_host_mac(int configNr, const u8 *addr)
|
|
{
|
|
rndis_per_dev_params[configNr].host_mac = addr;
|
|
}
|
|
|
|
enum rndis_state rndis_get_state(int configNr)
|
|
{
|
|
if (configNr >= RNDIS_MAX_CONFIGS || configNr < 0)
|
|
return -ENOTSUPP;
|
|
return rndis_per_dev_params[configNr].state;
|
|
}
|
|
|
|
/*
|
|
* Message Parser
|
|
*/
|
|
int rndis_msg_parser(u8 configNr, u8 *buf)
|
|
{
|
|
u32 MsgType, MsgLength;
|
|
__le32 *tmp;
|
|
struct rndis_params *params;
|
|
|
|
debug("%s: configNr = %d, %p\n", __func__, configNr, buf);
|
|
|
|
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 REMOTE_NDIS_INITIALIZE_MSG:
|
|
debug("%s: REMOTE_NDIS_INITIALIZE_MSG\n", __func__);
|
|
params->state = RNDIS_INITIALIZED;
|
|
return rndis_init_response(configNr,
|
|
(rndis_init_msg_type *) buf);
|
|
|
|
case REMOTE_NDIS_HALT_MSG:
|
|
debug("%s: REMOTE_NDIS_HALT_MSG\n", __func__);
|
|
params->state = RNDIS_UNINITIALIZED;
|
|
return 0;
|
|
|
|
case REMOTE_NDIS_QUERY_MSG:
|
|
return rndis_query_response(configNr,
|
|
(rndis_query_msg_type *) buf);
|
|
|
|
case REMOTE_NDIS_SET_MSG:
|
|
return rndis_set_response(configNr,
|
|
(rndis_set_msg_type *) buf);
|
|
|
|
case REMOTE_NDIS_RESET_MSG:
|
|
debug("%s: REMOTE_NDIS_RESET_MSG\n", __func__);
|
|
return rndis_reset_response(configNr,
|
|
(rndis_reset_msg_type *) buf);
|
|
|
|
case REMOTE_NDIS_KEEPALIVE_MSG:
|
|
/* For USB: host does this every 5 seconds */
|
|
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
|
|
debug("%s: REMOTE_NDIS_KEEPALIVE_MSG\n", __func__);
|
|
#endif
|
|
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.
|
|
*/
|
|
debug("%s: unknown RNDIS message 0x%08X len %d\n",
|
|
__func__ , MsgType, MsgLength);
|
|
{
|
|
unsigned i;
|
|
for (i = 0; i < MsgLength; 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]);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
int rndis_register(int (*rndis_control_ack)(struct udevice *))
|
|
{
|
|
u8 i;
|
|
|
|
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].ack = rndis_control_ack;
|
|
debug("%s: configNr = %d\n", __func__, i);
|
|
return i;
|
|
}
|
|
}
|
|
debug("%s failed\n", __func__);
|
|
|
|
return -1;
|
|
}
|
|
|
|
void rndis_deregister(int configNr)
|
|
{
|
|
debug("%s: configNr = %d\n", __func__, configNr);
|
|
|
|
if (configNr >= RNDIS_MAX_CONFIGS)
|
|
return;
|
|
rndis_per_dev_params[configNr].used = 0;
|
|
|
|
return;
|
|
}
|
|
|
|
int rndis_set_param_dev(u8 configNr, struct udevice *dev, int mtu,
|
|
struct net_device_stats *stats, u16 *cdc_filter)
|
|
{
|
|
debug("%s: configNr = %d\n", __func__, configNr);
|
|
if (!dev || !stats)
|
|
return -1;
|
|
if (configNr >= RNDIS_MAX_CONFIGS)
|
|
return -1;
|
|
|
|
rndis_per_dev_params[configNr].dev = dev;
|
|
rndis_per_dev_params[configNr].stats = stats;
|
|
rndis_per_dev_params[configNr].mtu = mtu;
|
|
rndis_per_dev_params[configNr].filter = cdc_filter;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr)
|
|
{
|
|
debug("%s: configNr = %d\n", __func__, configNr);
|
|
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;
|
|
}
|
|
|
|
int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed)
|
|
{
|
|
debug("%s: configNr = %d, %u %u\n", __func__, configNr, 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;
|
|
}
|
|
|
|
void rndis_add_hdr(void *buf, int length)
|
|
{
|
|
struct rndis_packet_msg_type *header;
|
|
|
|
header = buf;
|
|
memset(header, 0, sizeof *header);
|
|
header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
|
|
header->MessageLength = cpu_to_le32(length + sizeof *header);
|
|
header->DataOffset = __constant_cpu_to_le32(36);
|
|
header->DataLength = cpu_to_le32(length);
|
|
}
|
|
|
|
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);
|
|
free(r);
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 = malloc(sizeof(rndis_resp_t) + length);
|
|
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(void *buf, int length)
|
|
{
|
|
/* tmp points to a struct rndis_packet_msg_type */
|
|
__le32 *tmp = buf;
|
|
int offs, len;
|
|
|
|
/* MessageType, MessageLength */
|
|
if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
|
|
!= get_unaligned(tmp++))
|
|
return -EINVAL;
|
|
tmp++;
|
|
|
|
/* DataOffset, DataLength */
|
|
offs = get_unaligned_le32(tmp++) + 8 /* offset of DataOffset */;
|
|
if (offs != sizeof(struct rndis_packet_msg_type))
|
|
debug("%s: unexpected DataOffset: %d\n", __func__, offs);
|
|
if (offs >= length)
|
|
return -EOVERFLOW;
|
|
|
|
len = get_unaligned_le32(tmp++);
|
|
if (len + sizeof(struct rndis_packet_msg_type) != length)
|
|
debug("%s: unexpected DataLength: %d, packet length=%d\n",
|
|
__func__, len, length);
|
|
|
|
memmove(buf, buf + offs, len);
|
|
|
|
return offs;
|
|
}
|
|
|
|
int rndis_init(void)
|
|
{
|
|
u8 i;
|
|
|
|
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
|
|
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
|
|
= NDIS_MEDIA_STATE_DISCONNECTED;
|
|
INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void rndis_exit(void)
|
|
{
|
|
/* Nothing to do */
|
|
}
|