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u-boot/drivers/usb/gadget/rndis.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

1319 lines
33 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* RNDIS MSG parser
*
* Authors: Benedikt Spranger, Pengutronix
* Robert Schwebel, Pengutronix
*
* 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 <linux/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 */
/*
* 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;
}
#ifndef CONFIG_DM_ETH
int rndis_register(int (*rndis_control_ack)(struct eth_device *))
#else
int rndis_register(int (*rndis_control_ack)(struct udevice *))
#endif
{
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;
}
#ifndef CONFIG_DM_ETH
int rndis_set_param_dev(u8 configNr, struct eth_device *dev, int mtu,
struct net_device_stats *stats, u16 *cdc_filter)
#else
int rndis_set_param_dev(u8 configNr, struct udevice *dev, int mtu,
struct net_device_stats *stats, u16 *cdc_filter)
#endif
{
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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