/[gxemul]/trunk/src/include/net.h
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Contents of /trunk/src/include/net.h

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Revision 10 - (show annotations)
Mon Oct 8 16:18:27 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 5154 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.815 2005/06/27 23:04:35 debug Exp $
20050617	Experimenting some more with netbooting OpenBSD/sgi. Adding
		a hack which allows emulated ethernet networks to be
		distributed across multiple emulator processes.
20050618	Minor updates (documentation, dummy YAMON emulation, etc).
20050620	strcpy/strcat -> strlcpy/strlcat updates.
		Some more progress on evbmips (Malta).
20050621	Adding a section to doc/configfiles.html about ethernet
		emulation across multiple hosts.
		Beginning the work on the ARM translation engine (using the
		dynamic-but-not-binary translation method).
		Fixing a bintrans bug: 0x9fc00000 should always be treated as
		PROM area, just as 0xbfc00000 is.
		Minor progress on Malta emulation (the PCI-ISA bus).
20050622	NetBSD/evbmips can now be installed (using another emulated
		machine) and run (including userland and so on). :-)
		Spliting up the bintrans haddr_entry field into two (one for
		read, one for write). Probably not much of a speed increase,
		though.
		Updating some NetBSD 2.0 -> 2.0.2 in the documentation.
20050623	Minor updates (documentation, the TODO file, etc).
		gzipped kernels are now always automagically gunzipped when
		loaded.
20050624	Adding a dummy Playstation Portable (PSP) mode, just barely
		enough to run Hello World (in weird colors :-).
		Removing the -b command line option; old bintrans is enabled
		by default instead. It makes more sense.
		Trying to finally fix the non-working performance measurement
		thing (instr/second etc).
20050625	Continuing on the essential basics for ARM emulation. Two
		instructions seem to work, a branch and a simple "mov". (The
		mov arguments are not correct yet.) Performance is definitely
		reasonable.
		Various other minor updates.
		Adding the ARM "bl" instruction.
		Adding support for combining multiple ARM instructions into one
		function call. ("mov" + "mov" is the only one implemented so
		far, but it seems to work.)
		Cleaning up some IP32 interrupt things (crime/mace); disabling
		the PS/2 keyboard controller on IP32, so that NetBSD/sgimips
		boots into userland again.
20050626	Finally! NetBSD/sgimips netboots. Adding instructions to
		doc/guestoses.html on how to set up an nfs server etc.
		Various other minor fixes.
		Playstation Portable ".pbp" files can now be used directly.
		(The ELF part of the .pbp is extracted transparently.)
		Converting some sprintf -> snprintf.
		Adding some more instructions to the ARM disassembler.
20050627	More ARM updates. Adding some simple ldr(b), str(b),
		cmps, and conditional branch instructions, enough to run
		a simple Hello World program.
		All ARM instructions are now inlined/generated for all possible
		condition codes.
		Adding add and sub, and more load/store instructions.
		Removing dummy files: cpu_alpha.c, cpu_hppa.c, and cpu_sparc.c.
		Some minor documentation updates; preparing for a 0.3.4
		release. Updating some URLs.

==============  RELEASE 0.3.4  ==============
1 #ifndef NET_H
2 #define NET_H
3
4 /*
5 * Copyright (C) 2004-2005 Anders Gavare. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 *
31 * $Id: net.h,v 1.12 2005/06/17 21:00:04 debug Exp $
32 *
33 * Emulated network support. (See net.c for more info.)
34 */
35
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
38 #include <netdb.h>
39
40 struct emul;
41 struct ethernet_packet_link;
42 struct remote_net;
43
44
45 /*****************************************************************************/
46
47 /* NOTE: udp_connection and tcp_connection are actually for
48 internal use only. */
49 struct udp_connection {
50 int in_use;
51 int64_t last_used_timestamp;
52
53 /* Inside: */
54 unsigned char ethernet_address[6];
55 unsigned char inside_ip_address[4];
56 int inside_udp_port;
57
58 /* TODO: Fragment support for outgoing packets! */
59 int fake_ns;
60
61 /* Outside: */
62 int udp_id;
63 int socket;
64 unsigned char outside_ip_address[4];
65 int outside_udp_port;
66 };
67
68 struct tcp_connection {
69 int in_use;
70 int64_t last_used_timestamp;
71
72 /* Inside: */
73 unsigned char ethernet_address[6];
74 unsigned char inside_ip_address[4];
75 int inside_tcp_port;
76 uint32_t inside_timestamp;
77
78 /* TODO: tx and rx buffers? */
79 unsigned char *incoming_buf;
80 int incoming_buf_rounds;
81 int incoming_buf_len;
82 uint32_t incoming_buf_seqnr;
83
84 uint32_t inside_seqnr;
85 uint32_t inside_acknr;
86 uint32_t outside_seqnr;
87 uint32_t outside_acknr;
88
89 /* Outside: */
90 int state;
91 int tcp_id;
92 int socket;
93 unsigned char outside_ip_address[4];
94 int outside_tcp_port;
95 uint32_t outside_timestamp;
96 };
97
98 /*****************************************************************************/
99
100
101 #define MAX_TCP_CONNECTIONS 60
102 #define MAX_UDP_CONNECTIONS 60
103
104 struct net {
105 /* The emul struct which this net belong to: */
106 struct emul *emul;
107
108 /* The network's addresses: */
109 struct in_addr netmask_ipv4;
110 int netmask_ipv4_len;
111
112 /* NICs connected to this network: */
113 int n_nics;
114 void **nic_extra; /* one void * per NIC */
115
116 /* The "special machine": */
117 unsigned char gateway_ipv4_addr[4];
118 unsigned char gateway_ethernet_addr[6];
119
120 /* Read from /etc/resolv.conf: */
121 char *domain_name;
122 int nameserver_known;
123 struct in_addr nameserver_ipv4;
124
125 int64_t timestamp;
126
127 struct ethernet_packet_link *first_ethernet_packet;
128 struct ethernet_packet_link *last_ethernet_packet;
129
130 struct udp_connection udp_connections[MAX_UDP_CONNECTIONS];
131 struct tcp_connection tcp_connections[MAX_TCP_CONNECTIONS];
132
133 /* Distributed network: */
134 int local_port;
135 int local_port_socket;
136 struct remote_net *remote_nets;
137 };
138
139 /* net.c: */
140 void net_generate_unique_mac(struct machine *, unsigned char *macbuf);
141 int net_ethernet_rx_avail(struct net *net, void *extra);
142 int net_ethernet_rx(struct net *net, void *extra,
143 unsigned char **packetp, int *lenp);
144 void net_ethernet_tx(struct net *net, void *extra,
145 unsigned char *packet, int len);
146 void net_dumpinfo(struct net *net);
147 void net_add_nic(struct net *net, void *extra, unsigned char *macaddr);
148 struct net *net_init(struct emul *emul, int init_flags,
149 char *ipv4addr, int netipv4len, char **remote, int n_remote,
150 int local_port);
151
152 /* Flag used to signify that this net should have a gateway: */
153 #define NET_INIT_FLAG_GATEWAY 1
154
155
156 /*
157 * This is for internal use in src/net.c:
158 */
159 struct ethernet_packet_link {
160 struct ethernet_packet_link *prev;
161 struct ethernet_packet_link *next;
162
163 void *extra;
164 unsigned char *data;
165 int len;
166 };
167
168 struct remote_net {
169 struct remote_net *next;
170
171 char *name;
172 struct in_addr ipv4_addr;
173 int portnr;
174 };
175
176 #define TCP_OUTSIDE_TRYINGTOCONNECT 1
177 #define TCP_OUTSIDE_CONNECTED 2
178 #define TCP_OUTSIDE_DISCONNECTED 3
179 #define TCP_OUTSIDE_DISCONNECTED2 4
180
181 #define TCP_INCOMING_BUF_LEN 2000
182
183 #endif /* NET_H */
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