diff options
Diffstat (limited to 'drivers/staging/ccg/rndis.c')
| -rw-r--r-- | drivers/staging/ccg/rndis.c | 1175 |
1 files changed, 0 insertions, 1175 deletions
diff --git a/drivers/staging/ccg/rndis.c b/drivers/staging/ccg/rndis.c deleted file mode 100644 index d9297eebbf73..000000000000 --- a/drivers/staging/ccg/rndis.c +++ /dev/null @@ -1,1175 +0,0 @@ -/* - * 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 <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/list.h> -#include <linux/proc_fs.h> -#include <linux/slab.h> -#include <linux/seq_file.h> -#include <linux/netdevice.h> - -#include <asm/io.h> -#include <asm/byteorder.h> -#include <asm/unaligned.h> - - -#undef VERBOSE_DEBUG - -#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 -static int rndis_debug = 0; -module_param (rndis_debug, int, 0); -MODULE_PARM_DESC (rndis_debug, "enable debugging"); -#else -#define rndis_debug 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 = 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 */ - RNDIS_OID_GEN_SUPPORTED_LIST, - RNDIS_OID_GEN_HARDWARE_STATUS, - RNDIS_OID_GEN_MEDIA_SUPPORTED, - RNDIS_OID_GEN_MEDIA_IN_USE, - RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE, - RNDIS_OID_GEN_LINK_SPEED, - RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE, - RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE, - RNDIS_OID_GEN_VENDOR_ID, - RNDIS_OID_GEN_VENDOR_DESCRIPTION, - RNDIS_OID_GEN_VENDOR_DRIVER_VERSION, - RNDIS_OID_GEN_CURRENT_PACKET_FILTER, - RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE, - RNDIS_OID_GEN_MEDIA_CONNECT_STATUS, - RNDIS_OID_GEN_PHYSICAL_MEDIUM, - - /* the statistical stuff */ - RNDIS_OID_GEN_XMIT_OK, - RNDIS_OID_GEN_RCV_OK, - RNDIS_OID_GEN_XMIT_ERROR, - RNDIS_OID_GEN_RCV_ERROR, - RNDIS_OID_GEN_RCV_NO_BUFFER, -#ifdef RNDIS_OPTIONAL_STATS - RNDIS_OID_GEN_DIRECTED_BYTES_XMIT, - RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT, - RNDIS_OID_GEN_MULTICAST_BYTES_XMIT, - RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT, - RNDIS_OID_GEN_BROADCAST_BYTES_XMIT, - RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT, - RNDIS_OID_GEN_DIRECTED_BYTES_RCV, - RNDIS_OID_GEN_DIRECTED_FRAMES_RCV, - RNDIS_OID_GEN_MULTICAST_BYTES_RCV, - RNDIS_OID_GEN_MULTICAST_FRAMES_RCV, - RNDIS_OID_GEN_BROADCAST_BYTES_RCV, - RNDIS_OID_GEN_BROADCAST_FRAMES_RCV, - RNDIS_OID_GEN_RCV_CRC_ERROR, - RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH, -#endif /* RNDIS_OPTIONAL_STATS */ - - /* mandatory 802.3 */ - /* the general stuff */ - RNDIS_OID_802_3_PERMANENT_ADDRESS, - RNDIS_OID_802_3_CURRENT_ADDRESS, - RNDIS_OID_802_3_MULTICAST_LIST, - RNDIS_OID_802_3_MAC_OPTIONS, - RNDIS_OID_802_3_MAXIMUM_LIST_SIZE, - - /* the statistical stuff */ - RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT, - RNDIS_OID_802_3_XMIT_ONE_COLLISION, - RNDIS_OID_802_3_XMIT_MORE_COLLISIONS, -#ifdef RNDIS_OPTIONAL_STATS - RNDIS_OID_802_3_XMIT_DEFERRED, - RNDIS_OID_802_3_XMIT_MAX_COLLISIONS, - RNDIS_OID_802_3_RCV_OVERRUN, - RNDIS_OID_802_3_XMIT_UNDERRUN, - RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE, - RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST, - RNDIS_OID_802_3_XMIT_LATE_COLLISIONS, -#endif /* RNDIS_OPTIONAL_STATS */ - -#ifdef RNDIS_PM - /* PM and wakeup are "mandatory" for USB, but the RNDIS specs - * don't say what they mean ... and the NDIS specs are often - * confusing and/or ambiguous in this context. (That is, more - * so than their specs for the other OIDs.) - * - * FIXME someone who knows what these should do, please - * implement them! - */ - - /* 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; - struct net_device *net; - struct rtnl_link_stats64 temp; - const struct rtnl_link_stats64 *stats; - - if (!r) return -ENOMEM; - resp = (rndis_query_cmplt_type *)r->buf; - - if (!resp) return -ENOMEM; - - if (buf_len && rndis_debug > 1) { - pr_debug("query OID %08x value, len %d:\n", OID, buf_len); - for (i = 0; i < buf_len; i += 16) { - pr_debug("%03d: %08x %08x %08x %08x\n", i, - get_unaligned_le32(&buf[i]), - get_unaligned_le32(&buf[i + 4]), - get_unaligned_le32(&buf[i + 8]), - get_unaligned_le32(&buf[i + 12])); - } - } - - /* response goes here, right after the header */ - outbuf = (__le32 *)&resp[1]; - resp->InformationBufferOffset = cpu_to_le32(16); - - net = rndis_per_dev_params[configNr].dev; - stats = dev_get_stats(net, &temp); - - switch (OID) { - - /* general oids (table 4-1) */ - - /* mandatory */ - case RNDIS_OID_GEN_SUPPORTED_LIST: - pr_debug("%s: RNDIS_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 RNDIS_OID_GEN_HARDWARE_STATUS: - pr_debug("%s: RNDIS_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 = cpu_to_le32(0); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_MEDIA_SUPPORTED: - pr_debug("%s: RNDIS_OID_GEN_MEDIA_SUPPORTED\n", __func__); - *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_MEDIA_IN_USE: - pr_debug("%s: RNDIS_OID_GEN_MEDIA_IN_USE\n", __func__); - /* one medium, one transport... (maybe you do it better) */ - *outbuf = cpu_to_le32(rndis_per_dev_params[configNr].medium); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE: - pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE\n", __func__); - if (rndis_per_dev_params[configNr].dev) { - *outbuf = cpu_to_le32( - rndis_per_dev_params[configNr].dev->mtu); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_LINK_SPEED: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_LINK_SPEED\n", __func__); - if (rndis_per_dev_params[configNr].media_state - == RNDIS_MEDIA_STATE_DISCONNECTED) - *outbuf = cpu_to_le32(0); - else - *outbuf = cpu_to_le32( - rndis_per_dev_params[configNr].speed); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE: - pr_debug("%s: RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE\n", __func__); - if (rndis_per_dev_params[configNr].dev) { - *outbuf = cpu_to_le32( - rndis_per_dev_params[configNr].dev->mtu); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE: - pr_debug("%s: RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE\n", __func__); - if (rndis_per_dev_params[configNr].dev) { - *outbuf = cpu_to_le32( - rndis_per_dev_params[configNr].dev->mtu); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_VENDOR_ID: - pr_debug("%s: RNDIS_OID_GEN_VENDOR_ID\n", __func__); - *outbuf = cpu_to_le32( - rndis_per_dev_params[configNr].vendorID); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_VENDOR_DESCRIPTION: - pr_debug("%s: RNDIS_OID_GEN_VENDOR_DESCRIPTION\n", __func__); - if (rndis_per_dev_params[configNr].vendorDescr) { - length = strlen(rndis_per_dev_params[configNr]. - vendorDescr); - memcpy(outbuf, - rndis_per_dev_params[configNr].vendorDescr, - length); - } else { - outbuf[0] = 0; - } - retval = 0; - break; - - case RNDIS_OID_GEN_VENDOR_DRIVER_VERSION: - pr_debug("%s: RNDIS_OID_GEN_VENDOR_DRIVER_VERSION\n", __func__); - /* Created as LE */ - *outbuf = rndis_driver_version; - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: - pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER\n", __func__); - *outbuf = cpu_to_le32(*rndis_per_dev_params[configNr].filter); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE: - pr_debug("%s: RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE\n", __func__); - *outbuf = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_GEN_MEDIA_CONNECT_STATUS: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); - *outbuf = cpu_to_le32(rndis_per_dev_params[configNr] - .media_state); - retval = 0; - break; - - case RNDIS_OID_GEN_PHYSICAL_MEDIUM: - pr_debug("%s: RNDIS_OID_GEN_PHYSICAL_MEDIUM\n", __func__); - *outbuf = 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 RNDIS_OID_GEN_MAC_OPTIONS: /* from WinME */ - pr_debug("%s: RNDIS_OID_GEN_MAC_OPTIONS\n", __func__); - *outbuf = cpu_to_le32( - RNDIS_MAC_OPTION_RECEIVE_SERIALIZED - | RNDIS_MAC_OPTION_FULL_DUPLEX); - retval = 0; - break; - - /* statistics OIDs (table 4-2) */ - - /* mandatory */ - case RNDIS_OID_GEN_XMIT_OK: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_XMIT_OK\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->tx_packets - - stats->tx_errors - stats->tx_dropped); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_RCV_OK: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_RCV_OK\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->rx_packets - - stats->rx_errors - stats->rx_dropped); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_XMIT_ERROR: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_XMIT_ERROR\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->tx_errors); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_RCV_ERROR: - if (rndis_debug > 1) - pr_debug("%s: RNDIS_OID_GEN_RCV_ERROR\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->rx_errors); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_GEN_RCV_NO_BUFFER: - pr_debug("%s: RNDIS_OID_GEN_RCV_NO_BUFFER\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->rx_dropped); - retval = 0; - } - break; - - /* ieee802.3 OIDs (table 4-3) */ - - /* mandatory */ - case RNDIS_OID_802_3_PERMANENT_ADDRESS: - pr_debug("%s: RNDIS_OID_802_3_PERMANENT_ADDRESS\n", __func__); - if (rndis_per_dev_params[configNr].dev) { - length = ETH_ALEN; - memcpy(outbuf, - rndis_per_dev_params[configNr].host_mac, - length); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_802_3_CURRENT_ADDRESS: - pr_debug("%s: RNDIS_OID_802_3_CURRENT_ADDRESS\n", __func__); - if (rndis_per_dev_params[configNr].dev) { - length = ETH_ALEN; - memcpy(outbuf, - rndis_per_dev_params [configNr].host_mac, - length); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_802_3_MULTICAST_LIST: - pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); - /* Multicast base address only */ - *outbuf = cpu_to_le32(0xE0000000); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_802_3_MAXIMUM_LIST_SIZE: - pr_debug("%s: RNDIS_OID_802_3_MAXIMUM_LIST_SIZE\n", __func__); - /* Multicast base address only */ - *outbuf = cpu_to_le32(1); - retval = 0; - break; - - case RNDIS_OID_802_3_MAC_OPTIONS: - pr_debug("%s: RNDIS_OID_802_3_MAC_OPTIONS\n", __func__); - *outbuf = cpu_to_le32(0); - retval = 0; - break; - - /* ieee802.3 statistics OIDs (table 4-4) */ - - /* mandatory */ - case RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT: - pr_debug("%s: RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); - if (stats) { - *outbuf = cpu_to_le32(stats->rx_frame_errors); - retval = 0; - } - break; - - /* mandatory */ - case RNDIS_OID_802_3_XMIT_ONE_COLLISION: - pr_debug("%s: RNDIS_OID_802_3_XMIT_ONE_COLLISION\n", __func__); - *outbuf = cpu_to_le32(0); - retval = 0; - break; - - /* mandatory */ - case RNDIS_OID_802_3_XMIT_MORE_COLLISIONS: - pr_debug("%s: RNDIS_OID_802_3_XMIT_MORE_COLLISIONS\n", __func__); - *outbuf = cpu_to_le32(0); - retval = 0; - break; - - default: - pr_warning("%s: query unknown OID 0x%08X\n", - __func__, OID); - } - if (retval < 0) - length = 0; - - resp->InformationBufferLength = cpu_to_le32(length); - r->length = length + sizeof(*resp); - resp->MessageLength = cpu_to_le32(r->length); - return retval; -} - -static int gen_ndis_set_resp(u8 configNr, u32 OID, u8 *buf, u32 buf_len, - rndis_resp_t *r) -{ - rndis_set_cmplt_type *resp; - int i, retval = -ENOTSUPP; - struct rndis_params *params; - - if (!r) - return -ENOMEM; - resp = (rndis_set_cmplt_type *)r->buf; - if (!resp) - return -ENOMEM; - - if (buf_len && rndis_debug > 1) { - pr_debug("set OID %08x value, len %d:\n", OID, buf_len); - for (i = 0; i < buf_len; i += 16) { - pr_debug("%03d: %08x %08x %08x %08x\n", i, - get_unaligned_le32(&buf[i]), - get_unaligned_le32(&buf[i + 4]), - get_unaligned_le32(&buf[i + 8]), - get_unaligned_le32(&buf[i + 12])); - } - } - - params = &rndis_per_dev_params[configNr]; - switch (OID) { - case RNDIS_OID_GEN_CURRENT_PACKET_FILTER: - - /* these NDIS_PACKET_TYPE_* bitflags are shared with - * cdc_filter; it's not RNDIS-specific - * NDIS_PACKET_TYPE_x == USB_CDC_PACKET_TYPE_x for x in: - * PROMISCUOUS, DIRECTED, - * MULTICAST, ALL_MULTICAST, BROADCAST - */ - *params->filter = (u16)get_unaligned_le32(buf); - pr_debug("%s: RNDIS_OID_GEN_CURRENT_PACKET_FILTER %08x\n", - __func__, *params->filter); - - /* this call has a significant side effect: it's - * what makes the packet flow start and stop, like - * activating the CDC Ethernet altsetting. - */ - retval = 0; - if (*params->filter) { - params->state = RNDIS_DATA_INITIALIZED; - netif_carrier_on(params->dev); - if (netif_running(params->dev)) - netif_wake_queue(params->dev); - } else { - params->state = RNDIS_INITIALIZED; - netif_carrier_off(params->dev); - netif_stop_queue(params->dev); - } - break; - - case RNDIS_OID_802_3_MULTICAST_LIST: - /* I think we can ignore this */ - pr_debug("%s: RNDIS_OID_802_3_MULTICAST_LIST\n", __func__); - retval = 0; - break; - - default: - pr_warning("%s: set unknown OID 0x%08X, size %d\n", - __func__, OID, buf_len); - } - - return retval; -} - -/* - * Response Functions - */ - -static int rndis_init_response(int configNr, rndis_init_msg_type *buf) -{ - rndis_init_cmplt_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - if (!params->dev) - return -ENOTSUPP; - - r = rndis_add_response(configNr, sizeof(rndis_init_cmplt_type)); - if (!r) - return -ENOMEM; - resp = (rndis_init_cmplt_type *)r->buf; - - resp->MessageType = cpu_to_le32(RNDIS_MSG_INIT_C); - resp->MessageLength = cpu_to_le32(52); - resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ - resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); - resp->MajorVersion = cpu_to_le32(RNDIS_MAJOR_VERSION); - resp->MinorVersion = cpu_to_le32(RNDIS_MINOR_VERSION); - resp->DeviceFlags = cpu_to_le32(RNDIS_DF_CONNECTIONLESS); - resp->Medium = cpu_to_le32(RNDIS_MEDIUM_802_3); - resp->MaxPacketsPerTransfer = cpu_to_le32(1); - resp->MaxTransferSize = cpu_to_le32( - params->dev->mtu - + sizeof(struct ethhdr) - + sizeof(struct rndis_packet_msg_type) - + 22); - resp->PacketAlignmentFactor = cpu_to_le32(0); - resp->AFListOffset = cpu_to_le32(0); - resp->AFListSize = cpu_to_le32(0); - - params->resp_avail(params->v); - return 0; -} - -static int rndis_query_response(int configNr, rndis_query_msg_type *buf) -{ - rndis_query_cmplt_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - /* pr_debug("%s: OID = %08X\n", __func__, cpu_to_le32(buf->OID)); */ - if (!params->dev) - return -ENOTSUPP; - - /* - * we need more memory: - * gen_ndis_query_resp expects enough space for - * rndis_query_cmplt_type followed by data. - * oid_supported_list is the largest data reply - */ - r = rndis_add_response(configNr, - sizeof(oid_supported_list) + sizeof(rndis_query_cmplt_type)); - if (!r) - return -ENOMEM; - resp = (rndis_query_cmplt_type *)r->buf; - - resp->MessageType = cpu_to_le32(RNDIS_MSG_QUERY_C); - resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ - - if (gen_ndis_query_resp(configNr, le32_to_cpu(buf->OID), - le32_to_cpu(buf->InformationBufferOffset) - + 8 + (u8 *)buf, - le32_to_cpu(buf->InformationBufferLength), - r)) { - /* OID not supported */ - resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); - resp->MessageLength = cpu_to_le32(sizeof *resp); - resp->InformationBufferLength = cpu_to_le32(0); - resp->InformationBufferOffset = cpu_to_le32(0); - } else - resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); - - params->resp_avail(params->v); - return 0; -} - -static int rndis_set_response(int configNr, rndis_set_msg_type *buf) -{ - u32 BufLength, BufOffset; - rndis_set_cmplt_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - r = rndis_add_response(configNr, sizeof(rndis_set_cmplt_type)); - if (!r) - return -ENOMEM; - resp = (rndis_set_cmplt_type *)r->buf; - - BufLength = le32_to_cpu(buf->InformationBufferLength); - BufOffset = le32_to_cpu(buf->InformationBufferOffset); - -#ifdef VERBOSE_DEBUG - pr_debug("%s: Length: %d\n", __func__, BufLength); - pr_debug("%s: Offset: %d\n", __func__, BufOffset); - pr_debug("%s: InfoBuffer: ", __func__); - - for (i = 0; i < BufLength; i++) { - pr_debug("%02x ", *(((u8 *) buf) + i + 8 + BufOffset)); - } - - pr_debug("\n"); -#endif - - resp->MessageType = cpu_to_le32(RNDIS_MSG_SET_C); - resp->MessageLength = cpu_to_le32(16); - resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ - if (gen_ndis_set_resp(configNr, le32_to_cpu(buf->OID), - ((u8 *)buf) + 8 + BufOffset, BufLength, r)) - resp->Status = cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED); - else - resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); - - params->resp_avail(params->v); - return 0; -} - -static int rndis_reset_response(int configNr, rndis_reset_msg_type *buf) -{ - rndis_reset_cmplt_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - r = rndis_add_response(configNr, sizeof(rndis_reset_cmplt_type)); - if (!r) - return -ENOMEM; - resp = (rndis_reset_cmplt_type *)r->buf; - - resp->MessageType = cpu_to_le32(RNDIS_MSG_RESET_C); - resp->MessageLength = cpu_to_le32(16); - resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); - /* resent information */ - resp->AddressingReset = cpu_to_le32(1); - - params->resp_avail(params->v); - return 0; -} - -static int rndis_keepalive_response(int configNr, - rndis_keepalive_msg_type *buf) -{ - rndis_keepalive_cmplt_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - /* host "should" check only in RNDIS_DATA_INITIALIZED state */ - - r = rndis_add_response(configNr, sizeof(rndis_keepalive_cmplt_type)); - if (!r) - return -ENOMEM; - resp = (rndis_keepalive_cmplt_type *)r->buf; - - resp->MessageType = cpu_to_le32(RNDIS_MSG_KEEPALIVE_C); - resp->MessageLength = cpu_to_le32(16); - resp->RequestID = buf->RequestID; /* Still LE in msg buffer */ - resp->Status = cpu_to_le32(RNDIS_STATUS_SUCCESS); - - params->resp_avail(params->v); - return 0; -} - - -/* - * Device to Host Comunication - */ -static int rndis_indicate_status_msg(int configNr, u32 status) -{ - rndis_indicate_status_msg_type *resp; - rndis_resp_t *r; - struct rndis_params *params = rndis_per_dev_params + configNr; - - if (params->state == RNDIS_UNINITIALIZED) - return -ENOTSUPP; - - r = rndis_add_response(configNr, - sizeof(rndis_indicate_status_msg_type)); - if (!r) - return -ENOMEM; - resp = (rndis_indicate_status_msg_type *)r->buf; - - resp->MessageType = cpu_to_le32(RNDIS_MSG_INDICATE); - resp->MessageLength = cpu_to_le32(20); - resp->Status = cpu_to_le32(status); - resp->StatusBufferLength = cpu_to_le32(0); - resp->StatusBufferOffset = cpu_to_le32(0); - - params->resp_avail(params->v); - return 0; -} - -int rndis_signal_connect(int configNr) -{ - rndis_per_dev_params[configNr].media_state - = RNDIS_MEDIA_STATE_CONNECTED; - return rndis_indicate_status_msg(configNr, - RNDIS_STATUS_MEDIA_CONNECT); -} - -int rndis_signal_disconnect(int configNr) -{ - rndis_per_dev_params[configNr].media_state - = RNDIS_MEDIA_STATE_DISCONNECTED; - return rndis_indicate_status_msg(configNr, - RNDIS_STATUS_MEDIA_DISCONNECT); -} - -void rndis_uninit(int configNr) -{ - u8 *buf; - u32 length; - - if (configNr >= RNDIS_MAX_CONFIGS) - return; - rndis_per_dev_params[configNr].state = RNDIS_UNINITIALIZED; - - /* drain the response queue */ - while ((buf = rndis_get_next_response(configNr, &length))) - rndis_free_response(configNr, buf); -} - -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 = get_unaligned_le32(tmp++); - MsgLength = get_unaligned_le32(tmp++); - - if (configNr >= RNDIS_MAX_CONFIGS) - return -ENOTSUPP; - params = &rndis_per_dev_params[configNr]; - - /* NOTE: RNDIS is *EXTREMELY* chatty ... Windows constantly polls for - * rx/tx statistics and link status, in addition to KEEPALIVE traffic - * and normal HC level polling to see if there's any IN traffic. - */ - - /* For USB: responses may take up to 10 seconds */ - switch (MsgType) { - case RNDIS_MSG_INIT: - pr_debug("%s: RNDIS_MSG_INIT\n", - __func__); - params->state = RNDIS_INITIALIZED; - return rndis_init_response(configNr, - (rndis_init_msg_type *)buf); - - case RNDIS_MSG_HALT: - pr_debug("%s: RNDIS_MSG_HALT\n", - __func__); - params->state = RNDIS_UNINITIALIZED; - if (params->dev) { - netif_carrier_off(params->dev); - netif_stop_queue(params->dev); - } - return 0; - - case RNDIS_MSG_QUERY: - return rndis_query_response(configNr, - (rndis_query_msg_type *)buf); - - case RNDIS_MSG_SET: - return rndis_set_response(configNr, - (rndis_set_msg_type *)buf); - - case RNDIS_MSG_RESET: - pr_debug("%s: RNDIS_MSG_RESET\n", - __func__); - return rndis_reset_response(configNr, - (rndis_reset_msg_type *)buf); - - case RNDIS_MSG_KEEPALIVE: - /* For USB: host does this every 5 seconds */ - if (rndis_debug > 1) - pr_debug("%s: RNDIS_MSG_KEEPALIVE\n", - __func__); - return rndis_keepalive_response(configNr, - (rndis_keepalive_msg_type *) - buf); - - default: - /* At least Windows XP emits some undefined RNDIS messages. - * In one case those messages seemed to relate to the host - * suspending itself. - */ - pr_warning("%s: unknown RNDIS message 0x%08X len %d\n", - __func__, MsgType, MsgLength); - print_hex_dump_bytes(__func__, DUMP_PREFIX_OFFSET, - buf, MsgLength); - break; - } - - return -ENOTSUPP; -} - -int rndis_register(void (*resp_avail)(void *v), void *v) -{ - u8 i; - - if (!resp_avail) - return -EINVAL; - - for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { - if (!rndis_per_dev_params[i].used) { - rndis_per_dev_params[i].used = 1; - rndis_per_dev_params[i].resp_avail = resp_avail; - rndis_per_dev_params[i].v = v; - pr_debug("%s: configNr = %d\n", __func__, i); - return i; - } - } - pr_debug("failed\n"); - - return -ENODEV; -} - -void rndis_deregister(int configNr) -{ - pr_debug("%s:\n", __func__); - - if (configNr >= RNDIS_MAX_CONFIGS) return; - rndis_per_dev_params[configNr].used = 0; -} - -int rndis_set_param_dev(u8 configNr, struct net_device *dev, u16 *cdc_filter) -{ - pr_debug("%s:\n", __func__); - if (!dev) - return -EINVAL; - if (configNr >= RNDIS_MAX_CONFIGS) return -1; - - rndis_per_dev_params[configNr].dev = dev; - rndis_per_dev_params[configNr].filter = cdc_filter; - - return 0; -} - -int rndis_set_param_vendor(u8 configNr, u32 vendorID, const char *vendorDescr) -{ - pr_debug("%s:\n", __func__); - if (!vendorDescr) return -1; - if (configNr >= RNDIS_MAX_CONFIGS) return -1; - - rndis_per_dev_params[configNr].vendorID = vendorID; - rndis_per_dev_params[configNr].vendorDescr = vendorDescr; - - return 0; -} - -int rndis_set_param_medium(u8 configNr, u32 medium, u32 speed) -{ - pr_debug("%s: %u %u\n", __func__, medium, speed); - if (configNr >= RNDIS_MAX_CONFIGS) return -1; - - rndis_per_dev_params[configNr].medium = medium; - rndis_per_dev_params[configNr].speed = speed; - - return 0; -} - -void rndis_add_hdr(struct sk_buff *skb) -{ - struct rndis_packet_msg_type *header; - - if (!skb) - return; - header = (void *)skb_push(skb, sizeof(*header)); - memset(header, 0, sizeof *header); - header->MessageType = cpu_to_le32(RNDIS_MSG_PACKET); - header->MessageLength = cpu_to_le32(skb->len); - header->DataOffset = cpu_to_le32(36); - header->DataLength = cpu_to_le32(skb->len - sizeof(*header)); -} - -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; - - /* NOTE: this gets copied into ether.c USB_BUFSIZ bytes ... */ - r = kmalloc(sizeof(rndis_resp_t) + length, GFP_ATOMIC); - if (!r) return NULL; - - r->buf = (u8 *)(r + 1); - r->length = length; - r->send = 0; - - list_add_tail(&r->list, - &(rndis_per_dev_params[configNr].resp_queue)); - return r; -} - -int rndis_rm_hdr(struct gether *port, - struct sk_buff *skb, - struct sk_buff_head *list) -{ - /* tmp points to a struct rndis_packet_msg_type */ - __le32 *tmp = (void *)skb->data; - - /* MessageType, MessageLength */ - if (cpu_to_le32(RNDIS_MSG_PACKET) - != get_unaligned(tmp++)) { - dev_kfree_skb_any(skb); - return -EINVAL; - } - tmp++; - - /* DataOffset, DataLength */ - if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) { - dev_kfree_skb_any(skb); - return -EOVERFLOW; - } - skb_trim(skb, get_unaligned_le32(tmp++)); - - skb_queue_tail(list, skb); - return 0; -} - -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - -static int rndis_proc_show(struct seq_file *m, void *v) -{ - rndis_params *param = m->private; - - seq_printf(m, - "Config Nr. %d\n" - "used : %s\n" - "state : %s\n" - "medium : 0x%08X\n" - "speed : %d\n" - "cable : %s\n" - "vendor ID : 0x%08X\n" - "vendor : %s\n", - param->confignr, (param->used) ? "y" : "n", - ({ char *s = "?"; - switch (param->state) { - case RNDIS_UNINITIALIZED: - s = "RNDIS_UNINITIALIZED"; break; - case RNDIS_INITIALIZED: - s = "RNDIS_INITIALIZED"; break; - case RNDIS_DATA_INITIALIZED: - s = "RNDIS_DATA_INITIALIZED"; break; - }; s; }), - param->medium, - (param->media_state) ? 0 : param->speed*100, - (param->media_state) ? "disconnected" : "connected", - param->vendorID, param->vendorDescr); - return 0; -} - -static ssize_t rndis_proc_write(struct file *file, const char __user *buffer, - size_t count, loff_t *ppos) -{ - rndis_params *p = PDE(file_inode(file))->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 pr_debug("%c is not valid\n", c); - break; - } - - buffer++; - } - - return count; -} - -static int rndis_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, rndis_proc_show, PDE(inode)->data); -} - -static const struct file_operations rndis_proc_fops = { - .owner = THIS_MODULE, - .open = rndis_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .write = rndis_proc_write, -}; - -#define NAME_TEMPLATE "driver/rndis-%03d" - -static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; - -#endif /* CONFIG_USB_GADGET_DEBUG_FILES */ - - -int rndis_init(void) -{ - u8 i; - - for (i = 0; i < RNDIS_MAX_CONFIGS; i++) { -#ifdef CONFIG_USB_GADGET_DEBUG_FILES - char name [20]; - - sprintf(name, NAME_TEMPLATE, i); - rndis_connect_state[i] = proc_create_data(name, 0660, NULL, - &rndis_proc_fops, - (void *)(rndis_per_dev_params + i)); - if (!rndis_connect_state[i]) { - pr_debug("%s: remove entries", __func__); - while (i) { - sprintf(name, NAME_TEMPLATE, --i); - remove_proc_entry(name, NULL); - } - pr_debug("\n"); - return -EIO; - } -#endif - rndis_per_dev_params[i].confignr = i; - rndis_per_dev_params[i].used = 0; - rndis_per_dev_params[i].state = RNDIS_UNINITIALIZED; - rndis_per_dev_params[i].media_state - = RNDIS_MEDIA_STATE_DISCONNECTED; - INIT_LIST_HEAD(&(rndis_per_dev_params[i].resp_queue)); - } - - return 0; -} - -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 -} |