304 lines
11 KiB
C
304 lines
11 KiB
C
/*
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The original version of this code was lrndis/usbd_rndis_core.c from https://github.com/fetisov/lrndis
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It has since been overhauled to suit this application
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*/
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/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2015 by Sergey Fetisov <fsenok@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdalign.h>
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#include <string.h>
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#include "class/net/net_device.h"
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#include "rndis_protocol.h"
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#include "netif/ethernet.h"
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#define RNDIS_LINK_SPEED 12000000 /* Link baudrate (12Mbit/s for USB-FS) */
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#define RNDIS_VENDOR "TinyUSB" /* NIC vendor name */
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static const uint8_t *const station_hwaddr = tud_network_mac_address;
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static const uint8_t *const permanent_hwaddr = tud_network_mac_address;
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static usb_eth_stat_t usb_eth_stat = { 0, 0, 0, 0 };
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static uint32_t oid_packet_filter = 0x0000000;
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static rndis_state_t rndis_state;
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CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN static uint8_t ndis_report[8] = { 0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
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static const uint32_t OIDSupportedList[] =
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{
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OID_GEN_SUPPORTED_LIST,
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OID_GEN_HARDWARE_STATUS,
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OID_GEN_MEDIA_SUPPORTED,
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OID_GEN_MEDIA_IN_USE,
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OID_GEN_MAXIMUM_FRAME_SIZE,
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OID_GEN_LINK_SPEED,
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OID_GEN_TRANSMIT_BLOCK_SIZE,
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OID_GEN_RECEIVE_BLOCK_SIZE,
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OID_GEN_VENDOR_ID,
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OID_GEN_VENDOR_DESCRIPTION,
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OID_GEN_VENDOR_DRIVER_VERSION,
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OID_GEN_CURRENT_PACKET_FILTER,
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OID_GEN_MAXIMUM_TOTAL_SIZE,
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OID_GEN_PROTOCOL_OPTIONS,
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OID_GEN_MAC_OPTIONS,
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OID_GEN_MEDIA_CONNECT_STATUS,
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OID_GEN_MAXIMUM_SEND_PACKETS,
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OID_802_3_PERMANENT_ADDRESS,
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OID_802_3_CURRENT_ADDRESS,
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OID_802_3_MULTICAST_LIST,
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OID_802_3_MAXIMUM_LIST_SIZE,
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OID_802_3_MAC_OPTIONS
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};
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#define OID_LIST_LENGTH TU_ARRAY_SIZE(OIDSupportedList)
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#define ENC_BUF_SIZE (OID_LIST_LENGTH * 4 + 32)
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static void *encapsulated_buffer;
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static void rndis_report(void)
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{
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netd_report(ndis_report, sizeof(ndis_report));
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}
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static void rndis_query_cmplt32(int status, uint32_t data)
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{
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rndis_query_cmplt_t *c;
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c = (rndis_query_cmplt_t *)encapsulated_buffer;
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c->MessageType = REMOTE_NDIS_QUERY_CMPLT;
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c->MessageLength = sizeof(rndis_query_cmplt_t) + 4;
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c->InformationBufferLength = 4;
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c->InformationBufferOffset = 16;
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c->Status = status;
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memcpy(c + 1, &data, sizeof(data));
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rndis_report();
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}
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static void rndis_query_cmplt(int status, const void *data, int size)
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{
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rndis_query_cmplt_t *c;
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c = (rndis_query_cmplt_t *)encapsulated_buffer;
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c->MessageType = REMOTE_NDIS_QUERY_CMPLT;
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c->MessageLength = sizeof(rndis_query_cmplt_t) + size;
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c->InformationBufferLength = size;
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c->InformationBufferOffset = 16;
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c->Status = status;
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memcpy(c + 1, data, size);
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rndis_report();
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}
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#define MAC_OPT NDIS_MAC_OPTION_COPY_LOOKAHEAD_DATA | \
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NDIS_MAC_OPTION_RECEIVE_SERIALIZED | \
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NDIS_MAC_OPTION_TRANSFERS_NOT_PEND | \
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NDIS_MAC_OPTION_NO_LOOPBACK
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static const char *rndis_vendor = RNDIS_VENDOR;
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static void rndis_query(void)
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{
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switch (((rndis_query_msg_t *)encapsulated_buffer)->Oid)
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{
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case OID_GEN_SUPPORTED_LIST: rndis_query_cmplt(RNDIS_STATUS_SUCCESS, OIDSupportedList, 4 * OID_LIST_LENGTH); return;
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case OID_GEN_VENDOR_DRIVER_VERSION: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0x00001000); return;
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case OID_802_3_CURRENT_ADDRESS: rndis_query_cmplt(RNDIS_STATUS_SUCCESS, station_hwaddr, 6); return;
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case OID_802_3_PERMANENT_ADDRESS: rndis_query_cmplt(RNDIS_STATUS_SUCCESS, permanent_hwaddr, 6); return;
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case OID_GEN_MEDIA_SUPPORTED: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;
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case OID_GEN_MEDIA_IN_USE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;
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case OID_GEN_PHYSICAL_MEDIUM: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIUM_802_3); return;
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case OID_GEN_HARDWARE_STATUS: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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case OID_GEN_LINK_SPEED: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, RNDIS_LINK_SPEED / 100); return;
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case OID_GEN_VENDOR_ID: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0x00FFFFFF); return;
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case OID_GEN_VENDOR_DESCRIPTION: rndis_query_cmplt(RNDIS_STATUS_SUCCESS, rndis_vendor, strlen(rndis_vendor) + 1); return;
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case OID_GEN_CURRENT_PACKET_FILTER: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, oid_packet_filter); return;
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case OID_GEN_MAXIMUM_FRAME_SIZE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, CFG_TUD_NET_MTU - SIZEOF_ETH_HDR); return;
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case OID_GEN_MAXIMUM_TOTAL_SIZE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, CFG_TUD_NET_MTU); return;
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case OID_GEN_TRANSMIT_BLOCK_SIZE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, CFG_TUD_NET_MTU); return;
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case OID_GEN_RECEIVE_BLOCK_SIZE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, CFG_TUD_NET_MTU); return;
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case OID_GEN_MEDIA_CONNECT_STATUS: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, NDIS_MEDIA_STATE_CONNECTED); return;
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case OID_GEN_RNDIS_CONFIG_PARAMETER: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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case OID_802_3_MAXIMUM_LIST_SIZE: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 1); return;
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case OID_802_3_MULTICAST_LIST: rndis_query_cmplt32(RNDIS_STATUS_NOT_SUPPORTED, 0); return;
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case OID_802_3_MAC_OPTIONS: rndis_query_cmplt32(RNDIS_STATUS_NOT_SUPPORTED, 0); return;
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case OID_GEN_MAC_OPTIONS: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, /*MAC_OPT*/ 0); return;
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case OID_802_3_RCV_ERROR_ALIGNMENT: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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case OID_802_3_XMIT_ONE_COLLISION: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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case OID_802_3_XMIT_MORE_COLLISIONS: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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case OID_GEN_XMIT_OK: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, usb_eth_stat.txok); return;
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case OID_GEN_RCV_OK: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, usb_eth_stat.rxok); return;
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case OID_GEN_RCV_ERROR: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, usb_eth_stat.rxbad); return;
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case OID_GEN_XMIT_ERROR: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, usb_eth_stat.txbad); return;
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case OID_GEN_RCV_NO_BUFFER: rndis_query_cmplt32(RNDIS_STATUS_SUCCESS, 0); return;
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default: rndis_query_cmplt(RNDIS_STATUS_FAILURE, NULL, 0); return;
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}
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}
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#define INFBUF ((uint8_t *)&(m->RequestId) + m->InformationBufferOffset)
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static void rndis_handle_config_parm(const char *data, int keyoffset, int valoffset, int keylen, int vallen)
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{
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(void)data;
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(void)keyoffset;
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(void)valoffset;
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(void)keylen;
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(void)vallen;
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}
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static void rndis_packetFilter(uint32_t newfilter)
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{
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(void)newfilter;
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}
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static void rndis_handle_set_msg(void)
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{
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rndis_set_cmplt_t *c;
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rndis_set_msg_t *m;
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rndis_Oid_t oid;
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c = (rndis_set_cmplt_t *)encapsulated_buffer;
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m = (rndis_set_msg_t *)encapsulated_buffer;
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oid = m->Oid;
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c->MessageType = REMOTE_NDIS_SET_CMPLT;
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c->MessageLength = sizeof(rndis_set_cmplt_t);
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c->Status = RNDIS_STATUS_SUCCESS;
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switch (oid)
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{
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/* Parameters set up in 'Advanced' tab */
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case OID_GEN_RNDIS_CONFIG_PARAMETER:
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{
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rndis_config_parameter_t *p;
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char *ptr = (char *)m;
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ptr += sizeof(rndis_generic_msg_t);
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ptr += m->InformationBufferOffset;
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p = (rndis_config_parameter_t *) ((void*) ptr);
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rndis_handle_config_parm(ptr, p->ParameterNameOffset, p->ParameterValueOffset, p->ParameterNameLength, p->ParameterValueLength);
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}
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break;
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/* Mandatory general OIDs */
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case OID_GEN_CURRENT_PACKET_FILTER:
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memcpy(&oid_packet_filter, INFBUF, 4);
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if (oid_packet_filter)
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{
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rndis_packetFilter(oid_packet_filter);
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rndis_state = rndis_data_initialized;
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}
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else
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{
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rndis_state = rndis_initialized;
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}
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break;
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case OID_GEN_CURRENT_LOOKAHEAD:
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break;
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case OID_GEN_PROTOCOL_OPTIONS:
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break;
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/* Mandatory 802_3 OIDs */
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case OID_802_3_MULTICAST_LIST:
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break;
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/* Power Management: fails for now */
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case OID_PNP_ADD_WAKE_UP_PATTERN:
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case OID_PNP_REMOVE_WAKE_UP_PATTERN:
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case OID_PNP_ENABLE_WAKE_UP:
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default:
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c->Status = RNDIS_STATUS_FAILURE;
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break;
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}
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/* c->MessageID is same as before */
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rndis_report();
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return;
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}
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void rndis_class_set_handler(uint8_t *data, int size)
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{
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encapsulated_buffer = data;
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(void)size;
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switch (((rndis_generic_msg_t *)encapsulated_buffer)->MessageType)
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{
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case REMOTE_NDIS_INITIALIZE_MSG:
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{
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rndis_initialize_cmplt_t *m;
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m = ((rndis_initialize_cmplt_t *)encapsulated_buffer);
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/* m->MessageID is same as before */
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m->MessageType = REMOTE_NDIS_INITIALIZE_CMPLT;
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m->MessageLength = sizeof(rndis_initialize_cmplt_t);
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m->MajorVersion = RNDIS_MAJOR_VERSION;
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m->MinorVersion = RNDIS_MINOR_VERSION;
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m->Status = RNDIS_STATUS_SUCCESS;
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m->DeviceFlags = RNDIS_DF_CONNECTIONLESS;
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m->Medium = RNDIS_MEDIUM_802_3;
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m->MaxPacketsPerTransfer = 1;
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m->MaxTransferSize = CFG_TUD_NET_MTU + sizeof(rndis_data_packet_t);
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m->PacketAlignmentFactor = 0;
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m->AfListOffset = 0;
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m->AfListSize = 0;
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rndis_state = rndis_initialized;
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rndis_report();
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}
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break;
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case REMOTE_NDIS_QUERY_MSG:
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rndis_query();
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break;
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case REMOTE_NDIS_SET_MSG:
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rndis_handle_set_msg();
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break;
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case REMOTE_NDIS_RESET_MSG:
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{
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rndis_reset_cmplt_t * m;
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m = ((rndis_reset_cmplt_t *)encapsulated_buffer);
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rndis_state = rndis_uninitialized;
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m->MessageType = REMOTE_NDIS_RESET_CMPLT;
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m->MessageLength = sizeof(rndis_reset_cmplt_t);
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m->Status = RNDIS_STATUS_SUCCESS;
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m->AddressingReset = 1; /* Make it look like we did something */
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/* m->AddressingReset = 0; - Windows halts if set to 1 for some reason */
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rndis_report();
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}
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break;
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case REMOTE_NDIS_KEEPALIVE_MSG:
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{
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rndis_keepalive_cmplt_t * m;
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m = (rndis_keepalive_cmplt_t *)encapsulated_buffer;
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m->MessageType = REMOTE_NDIS_KEEPALIVE_CMPLT;
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m->MessageLength = sizeof(rndis_keepalive_cmplt_t);
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m->Status = RNDIS_STATUS_SUCCESS;
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}
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/* We have data to send back */
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rndis_report();
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break;
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default:
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break;
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}
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}
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