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linux/drivers/usb/gadget/rndis.c
David Brownell 6cdee106e7 [PATCH] usb gadget: ethernet/rndis updates 
Updates to the Ethernet/RNDIS gadget driver (mostly for RNDIS):

  - Fix brown-paper bag goof with RNDIS packet TX ... the wrong length
    field got set, so Windows would ignore data packets it received.

  - More consistent handling of CDC output filters (but not yet hooking
    things up so RNDIS uses the mechanism).

  - Zerocopy RX for RNDIS packets too (saving CPU cycles).

  - Use the pre-allocated interrupt/status request and buffer, rather
    than allocating and freeing one of each every few seconds (which
    could fail).

  - Some more "sparse" tweaks, making both dual-speed and single-speed
    configurations happier.

  - RNDIS speeds are reported in units of 100bps, not bps.

Plus two minor cleanups (whitespace, messaging).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-04-18 17:39:34 -07:00

1427 lines
36 KiB
C
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/*
* RNDIS MSG parser
*
* Version: $Id: rndis.c,v 1.19 2004/03/25 21:33:46 robert Exp $
*
* 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 <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/version.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/proc_fs.h>
#include <linux/netdevice.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <asm/system.h>
#include <asm/unaligned.h>
#undef RNDIS_PM
#undef VERBOSE
#include "rndis.h"
/* 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.
*/
#if 0
#define DEBUG(str,args...) do { \
if (rndis_debug) \
printk(KERN_DEBUG str , ## args ); \
} while (0)
static int rndis_debug = 0;
module_param (rndis_debug, bool, 0);
MODULE_PARM_DESC (rndis_debug, "enable debugging");
#else
#define rndis_debug 0
#define DEBUG(str,args...) do{}while(0)
#endif
#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 int rndis_init_response (int configNr, rndis_init_msg_type *buf);
static int rndis_query_response (int configNr, rndis_query_msg_type *buf);
static int rndis_set_response (int configNr, rndis_set_msg_type *buf);
static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf);
static int rndis_keepalive_response (int configNr,
rndis_keepalive_msg_type *buf);
static rndis_resp_t *rndis_add_response (int configNr, u32 length);
/* NDIS Functions */
static int gen_ndis_query_resp (int configNr, u32 OID, rndis_resp_t *r)
{
int retval = -ENOTSUPP;
u32 length = 0;
__le32 *tmp;
int i, count;
rndis_query_cmplt_type *resp;
if (!r) return -ENOMEM;
resp = (rndis_query_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
switch (OID) {
/* general oids (table 4-1) */
/* mandatory */
case OID_GEN_SUPPORTED_LIST:
DEBUG ("%s: OID_GEN_SUPPORTED_LIST\n", __FUNCTION__);
length = sizeof (oid_supported_list);
count = length / sizeof (u32);
tmp = (__le32 *) ((u8 *)resp + 24);
for (i = 0; i < count; i++)
tmp[i] = cpu_to_le32 (oid_supported_list[i]);
retval = 0;
break;
/* mandatory */
case OID_GEN_HARDWARE_STATUS:
DEBUG("%s: OID_GEN_HARDWARE_STATUS\n", __FUNCTION__);
length = 4;
/* Bogus question!
* Hardware must be ready to receive high level protocols.
* BTW:
* reddite ergo quae sunt Caesaris Caesari
* et quae sunt Dei Deo!
*/
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_SUPPORTED:
DEBUG("%s: OID_GEN_MEDIA_SUPPORTED\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].medium);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_IN_USE:
DEBUG("%s: OID_GEN_MEDIA_IN_USE\n", __FUNCTION__);
length = 4;
/* one medium, one transport... (maybe you do it better) */
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].medium);
retval = 0;
break;
/* mandatory */
case OID_GEN_MAXIMUM_FRAME_SIZE:
DEBUG("%s: OID_GEN_MAXIMUM_FRAME_SIZE\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].dev) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].dev->mtu);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_LINK_SPEED:
// DEBUG("%s: OID_GEN_LINK_SPEED\n", __FUNCTION__);
length = 4;
if (rndis_per_dev_params [configNr].media_state
== NDIS_MEDIA_STATE_DISCONNECTED)
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
else
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].speed);
retval = 0;
break;
/* mandatory */
case OID_GEN_TRANSMIT_BLOCK_SIZE:
DEBUG("%s: OID_GEN_TRANSMIT_BLOCK_SIZE\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].dev) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].dev->mtu);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RECEIVE_BLOCK_SIZE:
DEBUG("%s: OID_GEN_RECEIVE_BLOCK_SIZE\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].dev) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].dev->mtu);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_VENDOR_ID:
DEBUG("%s: OID_GEN_VENDOR_ID\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].vendorID);
retval = 0;
break;
/* mandatory */
case OID_GEN_VENDOR_DESCRIPTION:
DEBUG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __FUNCTION__);
length = strlen (rndis_per_dev_params [configNr].vendorDescr);
memcpy ((u8 *) resp + 24,
rndis_per_dev_params [configNr].vendorDescr, length);
retval = 0;
break;
case OID_GEN_VENDOR_DRIVER_VERSION:
DEBUG("%s: OID_GEN_VENDOR_DRIVER_VERSION\n", __FUNCTION__);
length = 4;
/* Created as LE */
*((__le32 *) resp + 6) = rndis_driver_version;
retval = 0;
break;
/* mandatory */
case OID_GEN_CURRENT_PACKET_FILTER:
DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params[configNr].filter);
retval = 0;
break;
/* mandatory */
case OID_GEN_MAXIMUM_TOTAL_SIZE:
DEBUG("%s: OID_GEN_MAXIMUM_TOTAL_SIZE\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = __constant_cpu_to_le32(
RNDIS_MAX_TOTAL_SIZE);
retval = 0;
break;
/* mandatory */
case OID_GEN_MEDIA_CONNECT_STATUS:
DEBUG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.media_state);
retval = 0;
break;
case OID_GEN_PHYSICAL_MEDIUM:
DEBUG("%s: OID_GEN_PHYSICAL_MEDIUM\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = __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", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = __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:
DEBUG("%s: OID_GEN_XMIT_OK\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].stats->tx_packets -
rndis_per_dev_params [configNr].stats->tx_errors -
rndis_per_dev_params [configNr].stats->tx_dropped);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_OK:
DEBUG("%s: OID_GEN_RCV_OK\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr].stats->rx_packets -
rndis_per_dev_params [configNr].stats->rx_errors -
rndis_per_dev_params [configNr].stats->rx_dropped);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_XMIT_ERROR:
DEBUG("%s: OID_GEN_XMIT_ERROR\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->tx_errors);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_ERROR:
DEBUG("%s: OID_GEN_RCV_ERROR\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_errors);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_GEN_RCV_NO_BUFFER:
DEBUG("%s: OID_GEN_RCV_NO_BUFFER\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_dropped);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
#ifdef RNDIS_OPTIONAL_STATS
case OID_GEN_DIRECTED_BYTES_XMIT:
DEBUG("%s: OID_GEN_DIRECTED_BYTES_XMIT\n", __FUNCTION__);
/*
* Aunt Tilly's size of shoes
* minus antarctica count of penguins
* divided by weight of Alpha Centauri
*/
if (rndis_per_dev_params [configNr].stats) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
(rndis_per_dev_params [configNr]
.stats->tx_packets -
rndis_per_dev_params [configNr]
.stats->tx_errors -
rndis_per_dev_params [configNr]
.stats->tx_dropped)
* 123);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_DIRECTED_FRAMES_XMIT:
DEBUG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __FUNCTION__);
/* dito */
if (rndis_per_dev_params [configNr].stats) {
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
(rndis_per_dev_params [configNr]
.stats->tx_packets -
rndis_per_dev_params [configNr]
.stats->tx_errors -
rndis_per_dev_params [configNr]
.stats->tx_dropped)
/ 123);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_MULTICAST_BYTES_XMIT:
DEBUG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->multicast*1234);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_MULTICAST_FRAMES_XMIT:
DEBUG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->multicast);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_BROADCAST_BYTES_XMIT:
DEBUG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->tx_packets/42*255);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_BROADCAST_FRAMES_XMIT:
DEBUG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->tx_packets/42);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_DIRECTED_BYTES_RCV:
DEBUG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __FUNCTION__);
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
case OID_GEN_DIRECTED_FRAMES_RCV:
DEBUG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __FUNCTION__);
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
case OID_GEN_MULTICAST_BYTES_RCV:
DEBUG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->multicast * 1111);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_MULTICAST_FRAMES_RCV:
DEBUG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->multicast);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_BROADCAST_BYTES_RCV:
DEBUG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_packets/42*255);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_BROADCAST_FRAMES_RCV:
DEBUG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_packets/42);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_RCV_CRC_ERROR:
DEBUG("%s: OID_GEN_RCV_CRC_ERROR\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats) {
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_crc_errors);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
case OID_GEN_TRANSMIT_QUEUE_LENGTH:
DEBUG("%s: OID_GEN_TRANSMIT_QUEUE_LENGTH\n", __FUNCTION__);
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
#endif /* RNDIS_OPTIONAL_STATS */
/* ieee802.3 OIDs (table 4-3) */
/* mandatory */
case OID_802_3_PERMANENT_ADDRESS:
DEBUG("%s: OID_802_3_PERMANENT_ADDRESS\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].dev) {
length = ETH_ALEN;
memcpy ((u8 *) resp + 24,
rndis_per_dev_params [configNr].host_mac,
length);
retval = 0;
} else {
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
}
break;
/* mandatory */
case OID_802_3_CURRENT_ADDRESS:
DEBUG("%s: OID_802_3_CURRENT_ADDRESS\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].dev) {
length = ETH_ALEN;
memcpy ((u8 *) resp + 24,
rndis_per_dev_params [configNr].host_mac,
length);
retval = 0;
}
break;
/* mandatory */
case OID_802_3_MULTICAST_LIST:
DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
length = 4;
/* Multicast base address only */
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0xE0000000);
retval = 0;
break;
/* mandatory */
case OID_802_3_MAXIMUM_LIST_SIZE:
DEBUG("%s: OID_802_3_MAXIMUM_LIST_SIZE\n", __FUNCTION__);
length = 4;
/* Multicast base address only */
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (1);
retval = 0;
break;
case OID_802_3_MAC_OPTIONS:
DEBUG("%s: OID_802_3_MAC_OPTIONS\n", __FUNCTION__);
break;
/* ieee802.3 statistics OIDs (table 4-4) */
/* mandatory */
case OID_802_3_RCV_ERROR_ALIGNMENT:
DEBUG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __FUNCTION__);
if (rndis_per_dev_params [configNr].stats)
{
length = 4;
*((__le32 *) resp + 6) = cpu_to_le32 (
rndis_per_dev_params [configNr]
.stats->rx_frame_errors);
retval = 0;
}
break;
/* mandatory */
case OID_802_3_XMIT_ONE_COLLISION:
DEBUG("%s: OID_802_3_XMIT_ONE_COLLISION\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
/* mandatory */
case OID_802_3_XMIT_MORE_COLLISIONS:
DEBUG("%s: OID_802_3_XMIT_MORE_COLLISIONS\n", __FUNCTION__);
length = 4;
*((__le32 *) resp + 6) = __constant_cpu_to_le32 (0);
retval = 0;
break;
#ifdef RNDIS_OPTIONAL_STATS
case OID_802_3_XMIT_DEFERRED:
DEBUG("%s: OID_802_3_XMIT_DEFERRED\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_XMIT_MAX_COLLISIONS:
DEBUG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_RCV_OVERRUN:
DEBUG("%s: OID_802_3_RCV_OVERRUN\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_XMIT_UNDERRUN:
DEBUG("%s: OID_802_3_XMIT_UNDERRUN\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_XMIT_HEARTBEAT_FAILURE:
DEBUG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_XMIT_TIMES_CRS_LOST:
DEBUG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __FUNCTION__);
/* TODO */
break;
case OID_802_3_XMIT_LATE_COLLISIONS:
DEBUG("%s: OID_802_3_XMIT_LATE_COLLISIONS\n", __FUNCTION__);
/* TODO */
break;
#endif /* RNDIS_OPTIONAL_STATS */
#ifdef RNDIS_PM
/* power management OIDs (table 4-5) */
case OID_PNP_CAPABILITIES:
DEBUG("%s: OID_PNP_CAPABILITIES\n", __FUNCTION__);
/* just PM, and remote wakeup on link status change
* (not magic packet or pattern match)
*/
length = sizeof (struct NDIS_PNP_CAPABILITIES);
memset (resp, 0, length);
{
struct NDIS_PNP_CAPABILITIES *caps = (void *) resp;
caps->Flags = NDIS_DEVICE_WAKE_UP_ENABLE;
caps->WakeUpCapabilities.MinLinkChangeWakeUp
= NdisDeviceStateD3;
/* FIXME then use usb_gadget_wakeup(), and
* set USB_CONFIG_ATT_WAKEUP in config desc
*/
}
retval = 0;
break;
case OID_PNP_QUERY_POWER:
DEBUG("%s: OID_PNP_QUERY_POWER\n", __FUNCTION__);
/* sure, handle any power state that maps to USB suspend */
retval = 0;
break;
#endif
default:
printk (KERN_WARNING "%s: query unknown OID 0x%08X\n",
__FUNCTION__, OID);
}
resp->InformationBufferOffset = __constant_cpu_to_le32 (16);
resp->InformationBufferLength = cpu_to_le32 (length);
resp->MessageLength = cpu_to_le32 (24 + length);
r->length = 24 + length;
return retval;
}
static int gen_ndis_set_resp (u8 configNr, u32 OID, u8 *buf, u32 buf_len,
rndis_resp_t *r)
{
rndis_set_cmplt_type *resp;
int i, retval = -ENOTSUPP;
struct rndis_params *params;
if (!r)
return -ENOMEM;
resp = (rndis_set_cmplt_type *) r->buf;
if (!resp)
return -ENOMEM;
DEBUG("set OID %08x value, len %d:\n", OID, buf_len);
for (i = 0; i < buf_len; i += 16) {
DEBUG ("%03d: "
" %02x %02x %02x %02x"
" %02x %02x %02x %02x"
" %02x %02x %02x %02x"
" %02x %02x %02x %02x"
"\n",
i,
buf[i], buf [i+1],
buf[i+2], buf[i+3],
buf[i+4], buf [i+5],
buf[i+6], buf[i+7],
buf[i+8], buf [i+9],
buf[i+10], buf[i+11],
buf[i+12], buf [i+13],
buf[i+14], buf[i+15]);
}
switch (OID) {
case OID_GEN_CURRENT_PACKET_FILTER:
params = &rndis_per_dev_params [configNr];
retval = 0;
/* FIXME use these NDIS_PACKET_TYPE_* bitflags to
* set the 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 = le32_to_cpup((__le32 *)buf);
DEBUG("%s: OID_GEN_CURRENT_PACKET_FILTER %08x\n",
__FUNCTION__, params->filter);
/* this call has a significant side effect: it's
* what makes the packet flow start and stop, like
* activating the CDC Ethernet altsetting.
*/
if (params->filter) {
params->state = RNDIS_DATA_INITIALIZED;
netif_carrier_on(params->dev);
if (netif_running(params->dev))
netif_wake_queue (params->dev);
} else {
params->state = RNDIS_INITIALIZED;
netif_carrier_off (params->dev);
netif_stop_queue (params->dev);
}
break;
case OID_802_3_MULTICAST_LIST:
/* I think we can ignore this */
DEBUG("%s: OID_802_3_MULTICAST_LIST\n", __FUNCTION__);
retval = 0;
break;
#if 0
case OID_GEN_RNDIS_CONFIG_PARAMETER:
{
struct rndis_config_parameter *param;
param = (struct rndis_config_parameter *) buf;
DEBUG("%s: OID_GEN_RNDIS_CONFIG_PARAMETER '%*s'\n",
__FUNCTION__,
min(cpu_to_le32(param->ParameterNameLength),80),
buf + param->ParameterNameOffset);
retval = 0;
}
break;
#endif
#ifdef RNDIS_PM
case OID_PNP_SET_POWER:
DEBUG ("OID_PNP_SET_POWER\n");
/* sure, handle any power state that maps to USB suspend */
retval = 0;
break;
case OID_PNP_ENABLE_WAKE_UP:
/* always-connected ... */
DEBUG ("OID_PNP_ENABLE_WAKE_UP\n");
retval = 0;
break;
// no PM resume patterns supported (specified where?)
// so OID_PNP_{ADD,REMOVE}_WAKE_UP_PATTERN always fails
#endif
default:
printk (KERN_WARNING "%s: set unknown OID 0x%08X, size %d\n",
__FUNCTION__, OID, buf_len);
}
return retval;
}
/*
* Response Functions
*/
static int rndis_init_response (int configNr, rndis_init_msg_type *buf)
{
rndis_init_cmplt_type *resp;
rndis_resp_t *r;
if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
r = rndis_add_response (configNr, sizeof (rndis_init_cmplt_type));
if (!r) return -ENOMEM;
resp = (rndis_init_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
resp->MessageType = __constant_cpu_to_le32 (
REMOTE_NDIS_INITIALIZE_CMPLT);
resp->MessageLength = __constant_cpu_to_le32 (52);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
resp->MajorVersion = __constant_cpu_to_le32 (RNDIS_MAJOR_VERSION);
resp->MinorVersion = __constant_cpu_to_le32 (RNDIS_MINOR_VERSION);
resp->DeviceFlags = __constant_cpu_to_le32 (RNDIS_DF_CONNECTIONLESS);
resp->Medium = __constant_cpu_to_le32 (RNDIS_MEDIUM_802_3);
resp->MaxPacketsPerTransfer = __constant_cpu_to_le32 (1);
resp->MaxTransferSize = cpu_to_le32 (
rndis_per_dev_params [configNr].dev->mtu
+ sizeof (struct ethhdr)
+ sizeof (struct rndis_packet_msg_type)
+ 22);
resp->PacketAlignmentFactor = __constant_cpu_to_le32 (0);
resp->AFListOffset = __constant_cpu_to_le32 (0);
resp->AFListSize = __constant_cpu_to_le32 (0);
if (rndis_per_dev_params [configNr].ack)
rndis_per_dev_params [configNr].ack (
rndis_per_dev_params [configNr].dev);
return 0;
}
static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
{
rndis_query_cmplt_type *resp;
rndis_resp_t *r;
// DEBUG("%s: OID = %08X\n", __FUNCTION__, cpu_to_le32(buf->OID));
if (!rndis_per_dev_params [configNr].dev) return -ENOTSUPP;
/*
* we need more memory:
* oid_supported_list is the largest answer
*/
r = rndis_add_response (configNr, sizeof (oid_supported_list));
if (!r) return -ENOMEM;
resp = (rndis_query_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_QUERY_CMPLT);
resp->MessageLength = __constant_cpu_to_le32 (24);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
if (gen_ndis_query_resp (configNr, le32_to_cpu (buf->OID), r)) {
/* OID not supported */
resp->Status = __constant_cpu_to_le32 (
RNDIS_STATUS_NOT_SUPPORTED);
resp->InformationBufferLength = __constant_cpu_to_le32 (0);
resp->InformationBufferOffset = __constant_cpu_to_le32 (0);
} else
resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
if (rndis_per_dev_params [configNr].ack)
rndis_per_dev_params [configNr].ack (
rndis_per_dev_params [configNr].dev);
return 0;
}
static int rndis_set_response (int configNr, rndis_set_msg_type *buf)
{
u32 BufLength, BufOffset;
rndis_set_cmplt_type *resp;
rndis_resp_t *r;
r = rndis_add_response (configNr, sizeof (rndis_set_cmplt_type));
if (!r) return -ENOMEM;
resp = (rndis_set_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
BufLength = le32_to_cpu (buf->InformationBufferLength);
BufOffset = le32_to_cpu (buf->InformationBufferOffset);
#ifdef VERBOSE
DEBUG("%s: Length: %d\n", __FUNCTION__, BufLength);
DEBUG("%s: Offset: %d\n", __FUNCTION__, BufOffset);
DEBUG("%s: InfoBuffer: ", __FUNCTION__);
for (i = 0; i < BufLength; i++) {
DEBUG ("%02x ", *(((u8 *) buf) + i + 8 + BufOffset));
}
DEBUG ("\n");
#endif
resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_SET_CMPLT);
resp->MessageLength = __constant_cpu_to_le32 (16);
resp->RequestID = buf->RequestID; /* Still LE in msg buffer */
if (gen_ndis_set_resp (configNr, le32_to_cpu (buf->OID),
((u8 *) buf) + 8 + BufOffset, BufLength, r))
resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED);
else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
if (rndis_per_dev_params [configNr].ack)
rndis_per_dev_params [configNr].ack (
rndis_per_dev_params [configNr].dev);
return 0;
}
static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf)
{
rndis_reset_cmplt_type *resp;
rndis_resp_t *r;
r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type));
if (!r) return -ENOMEM;
resp = (rndis_reset_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
resp->MessageType = __constant_cpu_to_le32 (REMOTE_NDIS_RESET_CMPLT);
resp->MessageLength = __constant_cpu_to_le32 (16);
resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS);
/* resent information */
resp->AddressingReset = __constant_cpu_to_le32 (1);
if (rndis_per_dev_params [configNr].ack)
rndis_per_dev_params [configNr].ack (
rndis_per_dev_params [configNr].dev);
return 0;
}
static int rndis_keepalive_response (int configNr,
rndis_keepalive_msg_type *buf)
{
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));
resp = (rndis_keepalive_cmplt_type *) r->buf;
if (!resp) return -ENOMEM;
resp->MessageType = __constant_cpu_to_le32 (
REMOTE_NDIS_KEEPALIVE_CMPLT);
resp->MessageLength = __constant_cpu_to_le32 (16);
resp->RequestID = 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;
if (!resp) return -ENOMEM;
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;
return rndis_indicate_status_msg (configNr,
RNDIS_STATUS_MEDIA_DISCONNECT);
}
void rndis_set_host_mac (int configNr, const u8 *addr)
{
rndis_per_dev_params [configNr].host_mac = addr;
}
/*
* Message Parser
*/
int rndis_msg_parser (u8 configNr, u8 *buf)
{
u32 MsgType, MsgLength;
__le32 *tmp;
struct rndis_params *params;
if (!buf)
return -ENOMEM;
tmp = (__le32 *) buf;
MsgType = le32_to_cpup(tmp++);
MsgLength = le32_to_cpup(tmp++);
if (configNr >= RNDIS_MAX_CONFIGS)
return -ENOTSUPP;
params = &rndis_per_dev_params [configNr];
/* For USB: responses may take up to 10 seconds */
switch (MsgType)
{
case REMOTE_NDIS_INITIALIZE_MSG:
DEBUG("%s: REMOTE_NDIS_INITIALIZE_MSG\n",
__FUNCTION__ );
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",
__FUNCTION__ );
params->state = RNDIS_UNINITIALIZED;
if (params->dev) {
netif_carrier_off (params->dev);
netif_stop_queue (params->dev);
}
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",
__FUNCTION__ );
return rndis_reset_response (configNr,
(rndis_reset_msg_type *) buf);
case REMOTE_NDIS_KEEPALIVE_MSG:
/* For USB: host does this every 5 seconds */
#ifdef VERBOSE
DEBUG("%s: REMOTE_NDIS_KEEPALIVE_MSG\n",
__FUNCTION__ );
#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.
*/
printk (KERN_WARNING
"%s: unknown RNDIS message 0x%08X len %d\n",
__FUNCTION__ , 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 net_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", __FUNCTION__, i);
return i;
}
}
DEBUG("failed\n");
return -1;
}
void rndis_deregister (int configNr)
{
DEBUG("%s: \n", __FUNCTION__ );
if (configNr >= RNDIS_MAX_CONFIGS) return;
rndis_per_dev_params [configNr].used = 0;
return;
}
int rndis_set_param_dev (u8 configNr, struct net_device *dev,
struct net_device_stats *stats)
{
DEBUG("%s:\n", __FUNCTION__ );
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;
return 0;
}
int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr)
{
DEBUG("%s:\n", __FUNCTION__ );
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:\n", __FUNCTION__ );
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 (struct sk_buff *skb)
{
struct rndis_packet_msg_type *header;
if (!skb)
return;
header = (void *) skb_push (skb, sizeof *header);
memset (header, 0, sizeof *header);
header->MessageType = __constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG);
header->MessageLength = cpu_to_le32(skb->len);
header->DataOffset = __constant_cpu_to_le32 (36);
header->DataLength = cpu_to_le32(skb->len - sizeof *header);
}
void rndis_free_response (int configNr, u8 *buf)
{
rndis_resp_t *r;
struct list_head *act, *tmp;
list_for_each_safe (act, tmp,
&(rndis_per_dev_params [configNr].resp_queue))
{
r = list_entry (act, rndis_resp_t, list);
if (r && r->buf == buf) {
list_del (&r->list);
kfree (r);
}
}
}
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;
r = kmalloc (sizeof (rndis_resp_t) + length, GFP_ATOMIC);
if (!r) return NULL;
r->buf = (u8 *) (r + 1);
r->length = length;
r->send = 0;
list_add_tail (&r->list,
&(rndis_per_dev_params [configNr].resp_queue));
return r;
}
int rndis_rm_hdr(struct sk_buff *skb)
{
/* tmp points to a struct rndis_packet_msg_type */
__le32 *tmp = (void *) skb->data;
/* MessageType, MessageLength */
if (__constant_cpu_to_le32(REMOTE_NDIS_PACKET_MSG)
!= get_unaligned(tmp++))
return -EINVAL;
tmp++;
/* DataOffset, DataLength */
if (!skb_pull(skb, le32_to_cpu(get_unaligned(tmp++))
+ 8 /* offset of DataOffset */))
return -EOVERFLOW;
skb_trim(skb, le32_to_cpu(get_unaligned(tmp++)));
return 0;
}
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
static int rndis_proc_read (char *page, char **start, off_t off, int count, int *eof,
void *data)
{
char *out = page;
int len;
rndis_params *param = (rndis_params *) data;
out += snprintf (out, count,
"Config Nr. %d\n"
"used : %s\n"
"state : %s\n"
"medium : 0x%08X\n"
"speed : %d\n"
"cable : %s\n"
"vendor ID : 0x%08X\n"
"vendor : %s\n",
param->confignr, (param->used) ? "y" : "n",
({ char *s = "?";
switch (param->state) {
case RNDIS_UNINITIALIZED:
s = "RNDIS_UNINITIALIZED"; break;
case RNDIS_INITIALIZED:
s = "RNDIS_INITIALIZED"; break;
case RNDIS_DATA_INITIALIZED:
s = "RNDIS_DATA_INITIALIZED"; break;
}; s; }),
param->medium,
(param->media_state) ? 0 : param->speed*100,
(param->media_state) ? "disconnected" : "connected",
param->vendorID, param->vendorDescr);
len = out - page;
len -= off;
if (len < count) {
*eof = 1;
if (len <= 0)
return 0;
} else
len = count;
*start = page + off;
return len;
}
static int rndis_proc_write (struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
rndis_params *p = data;
u32 speed = 0;
int i, fl_speed = 0;
for (i = 0; i < count; i++) {
char c;
if (get_user(c, buffer))
return -EFAULT;
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
fl_speed = 1;
speed = speed*10 + c - '0';
break;
case 'C':
case 'c':
rndis_signal_connect (p->confignr);
break;
case 'D':
case 'd':
rndis_signal_disconnect(p->confignr);
break;
default:
if (fl_speed) p->speed = speed;
else DEBUG ("%c is not valid\n", c);
break;
}
buffer++;
}
return count;
}
#define NAME_TEMPLATE "driver/rndis-%03d"
static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS];
#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
int __init rndis_init (void)
{
u8 i;
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
char name [20];
sprintf (name, NAME_TEMPLATE, i);
if (!(rndis_connect_state [i]
= create_proc_entry (name, 0660, NULL)))
{
DEBUG ("%s :remove entries", __FUNCTION__);
while (i) {
sprintf (name, NAME_TEMPLATE, --i);
remove_proc_entry (name, NULL);
}
DEBUG ("\n");
return -EIO;
}
rndis_connect_state [i]->nlink = 1;
rndis_connect_state [i]->write_proc = rndis_proc_write;
rndis_connect_state [i]->read_proc = rndis_proc_read;
rndis_connect_state [i]->data = (void *)
(rndis_per_dev_params + i);
#endif
rndis_per_dev_params [i].confignr = i;
rndis_per_dev_params [i].used = 0;
rndis_per_dev_params [i].state = RNDIS_UNINITIALIZED;
rndis_per_dev_params [i].media_state
= NDIS_MEDIA_STATE_DISCONNECTED;
INIT_LIST_HEAD (&(rndis_per_dev_params [i].resp_queue));
}
return 0;
}
void rndis_exit (void)
{
#ifdef CONFIG_USB_GADGET_DEBUG_FILES
u8 i;
char name [20];
for (i = 0; i < RNDIS_MAX_CONFIGS; i++) {
sprintf (name, NAME_TEMPLATE, i);
remove_proc_entry (name, NULL);
}
#endif
}
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