758f4de4d4
- Removed "pseudo device plugin" containing common code and specific drivers. - Moved network module base classes and module handling to the Bochs core. Now loading network driver plugins in netmod.cc. - Moved shared networking code used by the 'vnet' driver and 'bxhub' from netmod.cc/.h to new files netutil.cc/.h. - Created separate plugins for each network driver implementation. - Modified Bochs plugin system to support new plugin type PLUGTYPE_NETWORK.
150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/////////////////////////////////////////////////////////////////////////
|
|
// $Id$
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (C) 2004-2017 The Bochs Project
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
|
|
// netutil.h - shared code for eth_vnet.cc and bxhub.cc
|
|
|
|
#ifndef BX_NETUTIL_H
|
|
#define BX_NETUTIL_H
|
|
|
|
#define ETHERNET_MAC_ADDR_LEN 6
|
|
#define ETHERNET_TYPE_IPV4 0x0800
|
|
#define ETHERNET_TYPE_ARP 0x0806
|
|
|
|
#define ARP_OPCODE_REQUEST 1
|
|
#define ARP_OPCODE_REPLY 2
|
|
#define ARP_OPCODE_REV_REQUEST 3
|
|
#define ARP_OPCODE_REV_REPLY 4
|
|
|
|
#define ICMP_ECHO_PACKET_MAX 128
|
|
|
|
#define TFTP_BUFFER_SIZE 1024
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma pack(push, 1)
|
|
#elif defined(__MWERKS__) && defined(macintosh)
|
|
#pragma options align=packed
|
|
#endif
|
|
|
|
typedef struct ethernet_header {
|
|
#if defined(_MSC_VER) && (_MSC_VER>=1300)
|
|
__declspec(align(1))
|
|
#endif
|
|
Bit8u dst_mac_addr[ETHERNET_MAC_ADDR_LEN];
|
|
Bit8u src_mac_addr[ETHERNET_MAC_ADDR_LEN];
|
|
Bit16u type;
|
|
}
|
|
#if !defined(_MSC_VER)
|
|
GCC_ATTRIBUTE((packed))
|
|
#endif
|
|
ethernet_header_t;
|
|
|
|
typedef struct arp_header {
|
|
#if defined(_MSC_VER) && (_MSC_VER>=1300)
|
|
__declspec(align(1))
|
|
#endif
|
|
Bit16u hw_addr_space;
|
|
Bit16u proto_addr_space;
|
|
Bit8u hw_addr_len;
|
|
Bit8u proto_addr_len;
|
|
Bit16u opcode;
|
|
/* HW address of sender */
|
|
/* Protocol address of sender */
|
|
/* HW address of target*/
|
|
/* Protocol address of target */
|
|
}
|
|
#if !defined(_MSC_VER)
|
|
GCC_ATTRIBUTE((packed))
|
|
#endif
|
|
arp_header_t;
|
|
|
|
typedef struct ip_header {
|
|
#if defined(_MSC_VER) && (_MSC_VER>=1300)
|
|
__declspec(align(1))
|
|
#endif
|
|
#ifdef BX_LITTLE_ENDIAN
|
|
Bit8u header_len : 4;
|
|
Bit8u version : 4;
|
|
#else
|
|
Bit8u version : 4;
|
|
Bit8u header_len : 4;
|
|
#endif
|
|
Bit8u tos;
|
|
Bit16u total_len;
|
|
Bit16u id;
|
|
Bit16u frag_offs;
|
|
Bit8u ttl;
|
|
Bit8u protocol;
|
|
Bit16u checksum;
|
|
Bit32u src_addr;
|
|
Bit32u dst_addr;
|
|
}
|
|
#if !defined(_MSC_VER)
|
|
GCC_ATTRIBUTE((packed))
|
|
#endif
|
|
ip_header_t;
|
|
|
|
typedef struct udp_header {
|
|
#if defined(_MSC_VER) && (_MSC_VER>=1300)
|
|
__declspec(align(1))
|
|
#endif
|
|
Bit16u src_port;
|
|
Bit16u dst_port;
|
|
Bit16u length;
|
|
Bit16u checksum;
|
|
}
|
|
#if !defined(_MSC_VER)
|
|
GCC_ATTRIBUTE((packed))
|
|
#endif
|
|
udp_header_t;
|
|
|
|
#if defined(_MSC_VER)
|
|
#pragma pack(pop)
|
|
#elif defined(__MWERKS__) && defined(macintosh)
|
|
#pragma options align=reset
|
|
#endif
|
|
|
|
// DHCP configuration structure
|
|
typedef struct {
|
|
Bit8u host_macaddr[6];
|
|
Bit8u guest_macaddr[6];
|
|
Bit8u host_ipv4addr[4];
|
|
Bit8u default_guest_ipv4addr[4];
|
|
Bit8u guest_ipv4addr[4];
|
|
Bit8u dns_ipv4addr[4];
|
|
} dhcp_cfg_t;
|
|
|
|
// vnet functions shared with bxhub
|
|
#ifdef BXHUB
|
|
#define bx_devmodel_c void
|
|
#endif
|
|
Bit16u ip_checksum(const Bit8u *buf, unsigned buf_len);
|
|
void vnet_prepare_reply(Bit8u *replybuf, unsigned l3type, dhcp_cfg_t *dhcpc);
|
|
bx_bool vnet_process_arp_request(const Bit8u *buf, Bit8u *reply, dhcp_cfg_t *dhcp);
|
|
bx_bool vnet_process_icmp_echo(const Bit8u *l3pkt, unsigned l3header_len,
|
|
const Bit8u *l4pkt, unsigned l4pkt_len,
|
|
Bit8u *reply);
|
|
int vnet_process_dhcp(bx_devmodel_c *netdev, const Bit8u *data, unsigned data_len,
|
|
Bit8u *reply, dhcp_cfg_t *dhcp);
|
|
int vnet_process_tftp(bx_devmodel_c *netdev, const Bit8u *data, unsigned data_len,
|
|
Bit16u req_tid, Bit8u *reply, const char *tftp_rootdir);
|
|
|
|
#endif
|