/* * 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 * Fixed message length bug in init_response * * 03/25/2004 Kai-Uwe Bloem * Fixed rndis_rm_hdr length bug. * * Copyright (C) 2004 by David Brownell * updates to merge with Linux 2.6, better match RNDIS spec */ #include #include #include #include #include #include #include #include #include #include #include #include #include #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 u32 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; u32 *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 = (u32 *) ((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! */ *((u32 *) 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; *((u32 *) 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) */ *((u32 *) 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; *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr].dev->mtu); retval = 0; } else { *((u32 *) 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) *((u32 *) resp + 6) = __constant_cpu_to_le32 (0); else *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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 */ *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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 { *((u32 *) 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; *((u32 *) 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 { *((u32 *) 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; *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->tx_errors); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->rx_errors); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->rx_dropped); retval = 0; } else { *((u32 *) 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; *((u32 *) 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 { *((u32 *) 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; *((u32 *) 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 { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->multicast*1234); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->multicast); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->tx_packets/42*255); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->tx_packets/42); retval = 0; } else { *((u32 *) 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__); *((u32 *) 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__); *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->multicast * 1111); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->multicast); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->rx_packets/42*255); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->rx_packets/42); retval = 0; } else { *((u32 *) 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) { *((u32 *) resp + 6) = cpu_to_le32 ( rndis_per_dev_params [configNr] .stats->rx_crc_errors); retval = 0; } else { *((u32 *) 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__); *((u32 *) 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 { *((u32 *) 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 */ *((u32 *) 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 */ *((u32 *) 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; *((u32 *) 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; *((u32 *) 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; *((u32 *) 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 * filter packets in hard_start_xmit() * NDIS_PACKET_TYPE_x == CDC_PACKET_TYPE_x for x in: * PROMISCUOUS, DIRECTED, * MULTICAST, ALL_MULTICAST, BROADCAST */ params->filter = cpu_to_le32p((u32 *)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, cpu_to_le32 (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 = cpu_to_le32 (buf->InformationBufferLength); BufOffset = cpu_to_le32 (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, cpu_to_le32 (buf->OID), ((u8 *) buf) + 8 + BufOffset, BufLength, r)) resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_NOT_SUPPORTED); else resp->Status = __constant_cpu_to_le32 (RNDIS_STATUS_SUCCESS); if (rndis_per_dev_params [configNr].ack) rndis_per_dev_params [configNr].ack ( rndis_per_dev_params [configNr].dev); return 0; } static int rndis_reset_response (int configNr, rndis_reset_msg_type *buf) { rndis_reset_cmplt_type *resp; rndis_resp_t *r; r = rndis_add_response (configNr, sizeof (rndis_reset_cmplt_type)); if (!r) return -ENOMEM; resp = (rndis_reset_cmplt_type *) r->buf; 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, *tmp; struct rndis_params *params; if (!buf) return -ENOMEM; tmp = (u32 *) buf; MsgType = cpu_to_le32p(tmp++); MsgLength = cpu_to_le32p(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) { if (!skb) return; skb_push (skb, sizeof (struct rndis_packet_msg_type)); memset (skb->data, 0, sizeof (struct rndis_packet_msg_type)); *((u32 *) skb->data) = __constant_cpu_to_le32 (1); *((u32 *) skb->data + 1) = cpu_to_le32(skb->len); *((u32 *) skb->data + 2) = __constant_cpu_to_le32 (36); *((u32 *) skb->data + 3) = cpu_to_le32(skb->len - 44); return; } 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 (u8 *buf, u32 *length) { u32 i, messageLen, dataOffset, *tmp; tmp = (u32 *) buf; if (!buf || !length) return -1; if (cpu_to_le32p(tmp++) != 1) return -1; messageLen = cpu_to_le32p(tmp++); dataOffset = cpu_to_le32p(tmp++) + 8; if (messageLen < dataOffset || messageLen > *length) return -1; for (i = dataOffset; i < messageLen; i++) buf [i - dataOffset] = buf [i]; *length = messageLen - dataOffset; 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 }