/* * 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/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/netdevice.h> #include <asm/io.h> #include <asm/byteorder.h> #include <asm/system.h> #include <asm/unaligned.h> #undef RNDIS_PM #undef RNDIS_WAKEUP #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 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 DBG(str,args...) do { \ if (rndis_debug) \ pr_debug(str , ## args); \ } while (0) #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; if (!r) return -ENOMEM; resp = (rndis_query_cmplt_type *) r->buf; if (!resp) return -ENOMEM; if (buf_len && rndis_debug > 1) { DBG("query OID %08x value, len %d:\n", OID, buf_len); for (i = 0; i < buf_len; i += 16) { DBG("%03d: %08x %08x %08x %08x\n", i, le32_to_cpu(get_unaligned((__le32 *) &buf[i])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 4])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 8])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 12]))); } } /* response goes here, right after the header */ outbuf = (__le32 *) &resp[1]; resp->InformationBufferOffset = __constant_cpu_to_le32 (16); switch (OID) { /* general oids (table 4-1) */ /* mandatory */ case OID_GEN_SUPPORTED_LIST: DBG("%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: DBG("%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: DBG("%s: OID_GEN_MEDIA_SUPPORTED\n", __func__); *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr].medium); retval = 0; break; /* mandatory */ case OID_GEN_MEDIA_IN_USE: DBG("%s: 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 OID_GEN_MAXIMUM_FRAME_SIZE: DBG("%s: 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 OID_GEN_LINK_SPEED: if (rndis_debug > 1) DBG("%s: OID_GEN_LINK_SPEED\n", __func__); if (rndis_per_dev_params [configNr].media_state == NDIS_MEDIA_STATE_DISCONNECTED) *outbuf = __constant_cpu_to_le32 (0); else *outbuf = cpu_to_le32 ( rndis_per_dev_params [configNr].speed); retval = 0; break; /* mandatory */ case OID_GEN_TRANSMIT_BLOCK_SIZE: DBG("%s: 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 OID_GEN_RECEIVE_BLOCK_SIZE: DBG("%s: 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 OID_GEN_VENDOR_ID: DBG("%s: OID_GEN_VENDOR_ID\n", __func__); *outbuf = cpu_to_le32 ( rndis_per_dev_params [configNr].vendorID); retval = 0; break; /* mandatory */ case OID_GEN_VENDOR_DESCRIPTION: DBG("%s: OID_GEN_VENDOR_DESCRIPTION\n", __func__); length = strlen (rndis_per_dev_params [configNr].vendorDescr); memcpy (outbuf, rndis_per_dev_params [configNr].vendorDescr, length); retval = 0; break; case OID_GEN_VENDOR_DRIVER_VERSION: DBG("%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: DBG("%s: OID_GEN_CURRENT_PACKET_FILTER\n", __func__); *outbuf = cpu_to_le32 (*rndis_per_dev_params[configNr].filter); retval = 0; break; /* mandatory */ case OID_GEN_MAXIMUM_TOTAL_SIZE: DBG("%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 (rndis_debug > 1) DBG("%s: OID_GEN_MEDIA_CONNECT_STATUS\n", __func__); *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .media_state); retval = 0; break; case OID_GEN_PHYSICAL_MEDIUM: DBG("%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 */ DBG("%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 (rndis_debug > 1) DBG("%s: OID_GEN_XMIT_OK\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = 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; } break; /* mandatory */ case OID_GEN_RCV_OK: if (rndis_debug > 1) DBG("%s: OID_GEN_RCV_OK\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = 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; } break; /* mandatory */ case OID_GEN_XMIT_ERROR: if (rndis_debug > 1) DBG("%s: OID_GEN_XMIT_ERROR\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->tx_errors); retval = 0; } break; /* mandatory */ case OID_GEN_RCV_ERROR: if (rndis_debug > 1) DBG("%s: OID_GEN_RCV_ERROR\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_errors); retval = 0; } break; /* mandatory */ case OID_GEN_RCV_NO_BUFFER: DBG("%s: OID_GEN_RCV_NO_BUFFER\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_dropped); retval = 0; } break; #ifdef RNDIS_OPTIONAL_STATS case OID_GEN_DIRECTED_BYTES_XMIT: DBG("%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 (rndis_per_dev_params [configNr].stats) { *outbuf = 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; } break; case OID_GEN_DIRECTED_FRAMES_XMIT: DBG("%s: OID_GEN_DIRECTED_FRAMES_XMIT\n", __func__); /* dito */ if (rndis_per_dev_params [configNr].stats) { *outbuf = 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; } break; case OID_GEN_MULTICAST_BYTES_XMIT: DBG("%s: OID_GEN_MULTICAST_BYTES_XMIT\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->multicast*1234); retval = 0; } break; case OID_GEN_MULTICAST_FRAMES_XMIT: DBG("%s: OID_GEN_MULTICAST_FRAMES_XMIT\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->multicast); retval = 0; } break; case OID_GEN_BROADCAST_BYTES_XMIT: DBG("%s: OID_GEN_BROADCAST_BYTES_XMIT\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->tx_packets/42*255); retval = 0; } break; case OID_GEN_BROADCAST_FRAMES_XMIT: DBG("%s: OID_GEN_BROADCAST_FRAMES_XMIT\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->tx_packets/42); retval = 0; } break; case OID_GEN_DIRECTED_BYTES_RCV: DBG("%s: OID_GEN_DIRECTED_BYTES_RCV\n", __func__); *outbuf = __constant_cpu_to_le32 (0); retval = 0; break; case OID_GEN_DIRECTED_FRAMES_RCV: DBG("%s: OID_GEN_DIRECTED_FRAMES_RCV\n", __func__); *outbuf = __constant_cpu_to_le32 (0); retval = 0; break; case OID_GEN_MULTICAST_BYTES_RCV: DBG("%s: OID_GEN_MULTICAST_BYTES_RCV\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->multicast * 1111); retval = 0; } break; case OID_GEN_MULTICAST_FRAMES_RCV: DBG("%s: OID_GEN_MULTICAST_FRAMES_RCV\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->multicast); retval = 0; } break; case OID_GEN_BROADCAST_BYTES_RCV: DBG("%s: OID_GEN_BROADCAST_BYTES_RCV\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_packets/42*255); retval = 0; } break; case OID_GEN_BROADCAST_FRAMES_RCV: DBG("%s: OID_GEN_BROADCAST_FRAMES_RCV\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_packets/42); retval = 0; } break; case OID_GEN_RCV_CRC_ERROR: DBG("%s: OID_GEN_RCV_CRC_ERROR\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_crc_errors); retval = 0; } break; case OID_GEN_TRANSMIT_QUEUE_LENGTH: DBG("%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: DBG("%s: 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 OID_802_3_CURRENT_ADDRESS: DBG("%s: 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 OID_802_3_MULTICAST_LIST: DBG("%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: DBG("%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: DBG("%s: OID_802_3_MAC_OPTIONS\n", __func__); break; /* ieee802.3 statistics OIDs (table 4-4) */ /* mandatory */ case OID_802_3_RCV_ERROR_ALIGNMENT: DBG("%s: OID_802_3_RCV_ERROR_ALIGNMENT\n", __func__); if (rndis_per_dev_params [configNr].stats) { *outbuf = cpu_to_le32 (rndis_per_dev_params [configNr] .stats->rx_frame_errors); retval = 0; } break; /* mandatory */ case OID_802_3_XMIT_ONE_COLLISION: DBG("%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: DBG("%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: DBG("%s: OID_802_3_XMIT_DEFERRED\n", __func__); /* TODO */ break; case OID_802_3_XMIT_MAX_COLLISIONS: DBG("%s: OID_802_3_XMIT_MAX_COLLISIONS\n", __func__); /* TODO */ break; case OID_802_3_RCV_OVERRUN: DBG("%s: OID_802_3_RCV_OVERRUN\n", __func__); /* TODO */ break; case OID_802_3_XMIT_UNDERRUN: DBG("%s: OID_802_3_XMIT_UNDERRUN\n", __func__); /* TODO */ break; case OID_802_3_XMIT_HEARTBEAT_FAILURE: DBG("%s: OID_802_3_XMIT_HEARTBEAT_FAILURE\n", __func__); /* TODO */ break; case OID_802_3_XMIT_TIMES_CRS_LOST: DBG("%s: OID_802_3_XMIT_TIMES_CRS_LOST\n", __func__); /* TODO */ break; case OID_802_3_XMIT_LATE_COLLISIONS: DBG("%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: DBG("%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: DBG("%s: OID_PNP_QUERY_POWER D%d\n", __func__, le32_to_cpu(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: 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) { DBG("set OID %08x value, len %d:\n", OID, buf_len); for (i = 0; i < buf_len; i += 16) { DBG("%03d: %08x %08x %08x %08x\n", i, le32_to_cpu(get_unaligned((__le32 *) &buf[i])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 4])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 8])), le32_to_cpu(get_unaligned((__le32 *) &buf[i + 12]))); } } 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) le32_to_cpu(get_unaligned( (__le32 *)buf)); DBG("%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; 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 */ DBG("%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; DBG("%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 = le32_to_cpu(get_unaligned((__le32 *)buf)); DBG("%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: 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; 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 = 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; // DBG("%s: OID = %08X\n", __func__, cpu_to_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 = 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 = __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 = le32_to_cpu (buf->InformationBufferLength); BufOffset = le32_to_cpu (buf->InformationBufferOffset); #ifdef VERBOSE DBG("%s: Length: %d\n", __func__, BufLength); DBG("%s: Offset: %d\n", __func__, BufOffset); DBG("%s: InfoBuffer: ", __func__); for (i = 0; i < BufLength; i++) { DBG("%02x ", *(((u8 *) buf) + i + 8 + BufOffset)); } DBG("\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; 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 = 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; 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].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; } /* * 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_cpu(get_unaligned(tmp++)); MsgLength = le32_to_cpu(get_unaligned(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: DBG("%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: DBG("%s: REMOTE_NDIS_HALT_MSG\n", __func__ ); 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: DBG("%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 (rndis_debug > 1) DBG("%s: REMOTE_NDIS_KEEPALIVE_MSG\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); { unsigned i; for (i = 0; i < MsgLength; i += 16) { DBG("%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; DBG("%s: configNr = %d\n", __func__, i); return i; } } DBG("failed\n"); return -1; } void rndis_deregister (int configNr) { DBG("%s: \n", __func__ ); 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, u16 *cdc_filter) { DBG("%s:\n", __func__ ); 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].filter = cdc_filter; return 0; } int rndis_set_param_vendor (u8 configNr, u32 vendorID, const char *vendorDescr) { DBG("%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) { DBG("%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 = __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; /* 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 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 DBG("%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))) { DBG("%s :remove entries", __func__); while (i) { sprintf (name, NAME_TEMPLATE, --i); remove_proc_entry (name, NULL); } DBG("\n"); return -EIO; } 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 }