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u-boot/drivers/usb/gadget/rndis.c

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/*
* RNDIS MSG parser
*
* Authors: Benedikt Spranger, Pengutronix
* Robert Schwebel, Pengutronix
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2, as published by the Free Software Foundation.
*
* This software was originally developed in conformance with
* Microsoft's Remote NDIS Specification License Agreement.
*
* 03/12/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
* Fixed message length bug in init_response
*
* 03/25/2004 Kai-Uwe Bloem <linux-development@auerswald.de>
* Fixed rndis_rm_hdr length bug.
*
* Copyright (C) 2004 by David Brownell
* updates to merge with Linux 2.6, better match RNDIS spec
*/
#include <common.h>
#include <net.h>
#include <malloc.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
#include <asm/errno.h>
#undef RNDIS_PM
#undef RNDIS_WAKEUP
#undef VERBOSE
#include "rndis.h"
#define ETH_ALEN 6 /* Octets in one ethernet addr */
#define ETH_HLEN 14 /* Total octets in header. */
#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
#define ETH_DATA_LEN 1500 /* Max. octets in payload */
#define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */
#define ENOTSUPP 524 /* Operation is not supported */
/*
* The driver for your USB chip needs to support ep0 OUT to work with
* RNDIS, plus all three CDC Ethernet endpoints (interrupt not optional).
*
* Windows hosts need an INF file like Documentation/usb/linux.inf
* and will be happier if you provide the host_addr module parameter.
*/
#define RNDIS_MAX_CONFIGS 1
static rndis_params rndis_per_dev_params[RNDIS_MAX_CONFIGS];
/* Driver Version */
static const __le32 rndis_driver_version = __constant_cpu_to_le32(1);
/* Function Prototypes */
static rndis_resp_t *rndis_add_response(int configNr, u32 length);
/* supported OIDs */
static const u32 oid_supported_list[] = {
/* the general stuff */
OID_GEN_SUPPORTED_LIST,
OID_GEN_HARDWARE_STATUS,
OID_GEN_MEDIA_SUPPORTED,
OID_GEN_MEDIA_IN_USE,
OID_GEN_MAXIMUM_FRAME_SIZE,
OID_GEN_LINK_SPEED,
OID_GEN_TRANSMIT_BLOCK_SIZE,
OID_GEN_RECEIVE_BLOCK_SIZE,
OID_GEN_VENDOR_ID,
OID_GEN_VENDOR_DESCRIPTION,
OID_GEN_VENDOR_DRIVER_VERSION,
OID_GEN_CURRENT_PACKET_FILTER,
OID_GEN_MAXIMUM_TOTAL_SIZE,
OID_GEN_MEDIA_CONNECT_STATUS,
OID_GEN_PHYSICAL_MEDIUM,
#if 0
OID_GEN_RNDIS_CONFIG_PARAMETER,
#endif
/* the statistical stuff */
OID_GEN_XMIT_OK,
OID_GEN_RCV_OK,
OID_GEN_XMIT_ERROR,
OID_GEN_RCV_ERROR,
OID_GEN_RCV_NO_BUFFER,
#ifdef RNDIS_OPTIONAL_STATS
OID_GEN_DIRECTED_BYTES_XMIT,
OID_GEN_DIRECTED_FRAMES_XMIT,
OID_GEN_MULTICAST_BYTES_XMIT,
OID_GEN_MULTICAST_FRAMES_XMIT,
OID_GEN_BROADCAST_BYTES_XMIT,
OID_GEN_BROADCAST_FRAMES_XMIT,
OID_GEN_DIRECTED_BYTES_RCV,
OID_GEN_DIRECTED_FRAMES_RCV,
OID_GEN_MULTICAST_BYTES_RCV,
OID_GEN_MULTICAST_FRAMES_RCV,
OID_GEN_BROADCAST_BYTES_RCV,
OID_GEN_BROADCAST_FRAMES_RCV,
OID_GEN_RCV_CRC_ERROR,
OID_GEN_TRANSMIT_QUEUE_LENGTH,
#endif /* RNDIS_OPTIONAL_STATS */
/* mandatory 802.3 */
/* the general stuff */
OID_802_3_PERMANENT_ADDRESS,
OID_802_3_CURRENT_ADDRESS,
OID_802_3_MULTICAST_LIST,
OID_802_3_MAC_OPTIONS,
OID_802_3_MAXIMUM_LIST_SIZE,
/* the statistical stuff */
OID_802_3_RCV_ERROR_ALIGNMENT,
OID_802_3_XMIT_ONE_COLLISION,
OID_802_3_XMIT_MORE_COLLISIONS,
#ifdef RNDIS_OPTIONAL_STATS
OID_802_3_XMIT_DEFERRED,
OID_802_3_XMIT_MAX_COLLISIONS,
OID_802_3_RCV_OVERRUN,
OID_802_3_XMIT_UNDERRUN,
OID_802_3_XMIT_HEARTBEAT_FAILURE,
OID_802_3_XMIT_TIMES_CRS_LOST,
OID_802_3_XMIT_LATE_COLLISIONS,
#endif /* RNDIS_OPTIONAL_STATS */
#ifdef RNDIS_PM
/* PM and wakeup are mandatory for USB: */
/* power management */
OID_PNP_CAPABILITIES,
OID_PNP_QUERY_POWER,
OID_PNP_SET_POWER,
#ifdef RNDIS_WAKEUP
/* wake up host */
OID_PNP_ENABLE_WAKE_UP,
OID_PNP_ADD_WAKE_UP_PATTERN,
OID_PNP_REMOVE_WAKE_UP_PATTERN,
#endif /* RNDIS_WAKEUP */
#endif /* RNDIS_PM */
};
/* NDIS Functions */
static int gen_ndis_query_resp(int configNr, u32 OID, u8 *buf,
unsigned buf_len, rndis_resp_t *r)
{
int retval = -ENOTSUPP;
u32 length = 4; /* usually */
__le32 *outbuf;
int i, count;
rndis_query_cmplt_type *resp;
rndis_params *params;
if (!r)
return -ENOMEM;
resp = (rndis_query_cmplt_type *) r->buf;
if (!resp)
return -ENOMEM;
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
if (buf_len) {
debug("query 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
/* response goes here, right after the header */
outbuf = (__le32 *) &resp[1];
resp->InformationBufferOffset = __constant_cpu_to_le32(16);
params = &rndis_per_dev_params[configNr];
switch (OID) {
/* general oids (table 4-1) */
/* mandatory */
case OID_GEN_SUPPORTED_LIST:
debug("%s: OID_GEN_SUPPORTED_LIST\n", __func__);
length = sizeof(oid_supported_list);
count = length / sizeof(u32);
for (i = 0; i < count; i++)
outbuf[i] = cpu_to_le32(oid_supported_list[i]);
retval = 0;
break;
/* mandatory */
case OID_GEN_HARDWARE_STATUS:
debug("%s: OID_GEN_HARDWARE_STATUS\n", __func__);
/*
* Bogus question!
* Hardware must be ready to receive high level protocols.
* BTW:
* reddite ergo quae sunt Caesaris Caesari
* et quae sunt Dei Deo!
*/
*outbuf = __constant_cpu_to_le32(0);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_SUPPORTED:
debug("%s: OID_GEN_MEDIA_SUPPORTED\n", __func__);
*outbuf = cpu_to_le32(params->medium);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_IN_USE:
debug("%s: OID_GEN_MEDIA_IN_USE\n", __func__);
/* one medium, one transport... (maybe you do it better) */
*outbuf = cpu_to_le32(params->medium);
retval = 0;
break;
/* mandatory */
case OID_GEN_MAXIMUM_FRAME_SIZE:
debug("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__);
if (params->dev) {
*outbuf = cpu_to_le32(params->mtu);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_LINK_SPEED:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_LINK_SPEED\n", __func__);
#endif
if (params->media_state == NDIS_MEDIA_STATE_DISCONNECTED)
*outbuf = __constant_cpu_to_le32(0);
else
*outbuf = cpu_to_le32(params->speed);
retval = 0;
break;
/* mandatory */
case OID_GEN_TRANSMIT_BLOCK_SIZE:
debug("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__);
if (params->dev) {
*outbuf = cpu_to_le32(params->mtu);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RECEIVE_BLOCK_SIZE:
debug("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__);
if (params->dev) {
*outbuf = cpu_to_le32(params->mtu);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_VENDOR_ID:
debug("%s: OID_GEN_VENDOR_ID\n", __func__);
*outbuf = cpu_to_le32(params->vendorID);
retval = 0;
break;
/* mandatory */
case OID_GEN_VENDOR_DESCRIPTION:
debug("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__);
length = strlen(params->vendorDescr);
memcpy(outbuf, params->vendorDescr, length);
retval = 0;
break;
case OID_GEN_VENDOR_DRIVER_VERSION:
debug("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __func__);
/* Created as LE */
*outbuf = rndis_driver_version;
retval = 0;
break;
/* mandatory */
case OID_GEN_CURRENT_PACKET_FILTER:
debug("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __func__);
*outbuf = cpu_to_le32(*params->filter);
retval = 0;
break;
/* mandatory */
case OID_GEN_MAXIMUM_TOTAL_SIZE:
debug("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__);
*outbuf = __constant_cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_CONNECT_STATUS:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __func__);
#endif
*outbuf = cpu_to_le32(params->media_state);
retval = 0;
break;
case OID_GEN_PHYSICAL_MEDIUM:
debug("%s: OID_GEN_PHYSICAL_MEDIUM\n", __func__);
*outbuf = __constant_cpu_to_le32(0);
retval = 0;
break;
/*
* The RNDIS specification is incomplete/wrong. Some versions
* of MS-Windows expect OIDs that aren't specified there. Other
* versions emit undefined RNDIS messages. DOCUMENT ALL THESE!
*/
case OID_GEN_MAC_OPTIONS: /* from WinME */
debug("%s: OID_GEN_MAC_OPTIONS\n", __func__);
*outbuf = __constant_cpu_to_le32(
NDIS_MAC_OPTION_RECEIVE_SERIALIZED
| NDIS_MAC_OPTION_FULL_DUPLEX);
retval = 0;
break;
/* statistics OIDs (table 4-2) */
/* mandatory */
case OID_GEN_XMIT_OK:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_XMIT_OK\n", __func__);
#endif
if (params->stats) {
*outbuf = cpu_to_le32(
params->stats->tx_packets -
params->stats->tx_errors -
params->stats->tx_dropped);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_OK:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_RCV_OK\n", __func__);
#endif
if (params->stats) {
*outbuf = cpu_to_le32(
params->stats->rx_packets -
params->stats->rx_errors -
params->stats->rx_dropped);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_XMIT_ERROR:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_XMIT_ERROR\n", __func__);
#endif
if (params->stats) {
*outbuf = cpu_to_le32(params->stats->tx_errors);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_ERROR:
#if defined(DEBUG) && defined(DEBUG_VERBOSE)
debug("%s: OID_GEN_RCV_ERROR\n", __func__);
#endif
if (params->stats) {
*outbuf = cpu_to_le32(params->stats->rx_errors);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_NO_BUFFER:
debug("%s: OID_GEN_RCV_NO_BUFFER\n", __func__);
if (params->stats) {
*outbuf = cpu_to_le32(params->stats->rx_dropped);
retval = 0;
}
break;
#ifdef RNDIS_OPTIONAL_STATS
case OID_GEN_DIRECTED_BYTES_XMIT:
debug("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __func__);
/*
* Aunt Tilly's size of shoes
* minus antarctica count of penguins
* divided by weight of Alpha Centauri
*/
if (params->stats) {
*outbuf = cpu_to_le32(
(params->stats->tx_packets -
params->stats->tx_errors -
params->stats->tx_dropped)
* 123);
retval = 0;
}
break;
case OID_GEN_DIRECTED_FRAMES_XMIT:
debug("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __func__);
/* dito */
if (params->stats) {
*outbuf = cpu_to_le32(
(params->stats->tx_packets -
params->stats->tx_errors -
params->stats->tx_dropped)
/ 123);
retval = 0;
}
break;
case OID_GEN_MULTICAST_BYTES_XMIT:
debug("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __func__);
if (params->stats) {
*outbuf = cpu_to_le32(params->stats->multicast * 1234);
retval = 0;
}
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;
}
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;
r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type));
if (!r)
return -ENOMEM;
resp = (rndis_set_cmplt_type *) r->buf;
BufLength = get_unaligned_le32(&buf->InformationBufferLength);
BufOffset = get_unaligned_le32(&buf->InformationBufferOffset);
#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 eth_device *))
{
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 eth_device *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 */
}
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