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

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Revision 20 - (show annotations)
Mon Oct 8 16:19:23 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 5156 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1055 2005/11/25 22:48:36 debug Exp $
20051031	Adding disassembly support for more ARM instructions (clz,
		smul* etc), and adding a hack to support "new tiny" pages
		for StrongARM.
20051101	Minor documentation updates (NetBSD 2.0.2 -> 2.1, and OpenBSD
		3.7 -> 3.8, and lots of testing).
		Changing from 1-sector PIO mode 0 transfers to 128-sector PIO
		mode 3 (in dev_wdc).
		Various minor ARM dyntrans updates (pc-relative loads from
		within the same page as the instruction are now treated as
		constant "mov").
20051102	Re-enabling instruction combinations (they were accidentally
		disabled).
		Dyntrans TLB entries are now overwritten using a round-robin
		scheme instead of randomly. This increases performance.
		Fixing a typo in file.c (thanks to Chuan-Hua Chang for
		noticing it).
		Experimenting with adding ATAPI support to dev_wdc (to make
		emulated *BSD detect cdroms as cdroms, not harddisks).
20051104	Various minor updates.
20051105	Continuing on the ATAPI emulation. Seems to work well enough
		for a NetBSD/cats installation, but not OpenBSD/cats.
		Various other updates.
20051106	Modifying the -Y command line option to allow scaleup with
		certain graphic controllers (only dev_vga so far), not just
		scaledown.
		Some minor dyntrans cleanups.
20051107	Beginning a cleanup up the PCI subsystem (removing the
		read_register hack, etc).
20051108	Continuing the cleanup; splitting up some pci devices into a
		normal autodev device and some separate pci glue code.
20051109	Continuing on the PCI bus stuff; all old pci_*.c have been
		incorporated into normal devices and/or rewritten as glue code
		only, adding a dummy Intel 82371AB PIIX4 for Malta (not really
		tested yet).
		Minor pckbc fix so that Linux doesn't complain.
		Working on the DEC 21143 NIC (ethernet mac rom stuff mostly).
		Various other minor fixes.
20051110	Some more ARM dyntrans fine-tuning (e.g. some instruction
		combinations (cmps followed by conditional branch within the
		same page) and special cases for DPIs with regform when the
		shifter isn't used).
20051111	ARM dyntrans updates: O(n)->O(1) for just-mark-as-non-
		writable in the generic pc_to_pointers function, and some other
		minor hacks.
		Merging Cobalt and evbmips (Malta) ISA interrupt handling,
		and some minor fixes to allow Linux to accept harddisk irqs.
20051112	Minor device updates (pckbc, dec21143, lpt, ...), most
		importantly fixing the ALI M1543/M5229 so that harddisk irqs
		work with Linux/CATS.
20051113	Some more generalizations of the PCI subsystem.
		Finally took the time to add a hack for SCSI CDROM TOCs; this
		enables OpenBSD to use partition 'a' (as needed by the OpenBSD
		installer), and Windows NT's installer to get a bit further.
		Also fixing dev_wdc to allow Linux to detect ATAPI CDROMs.
		Continuing on the DEC 21143.
20051114	Minor ARM dyntrans tweaks; ARM cmps+branch optimization when
		comparing with 0, and generalizing the xchg instr. comb.
		Adding disassembly of ARM mrrc/mcrr and q{,d}{add,sub}.
20051115	Continuing on various PPC things (BATs, other address trans-
		lation things, various loads/stores, BeBox emulation, etc.).
		Beginning to work on PPC interrupt/exception support.
20051116	Factoring out some code which initializes legacy ISA devices
		from those machines that use them (bus_isa).
		Continuing on PPC interrupt/exception support.
20051117	Minor Malta fixes: RTC year offset = 80, disabling a speed hack
		which caused NetBSD to detect a too fast cpu, and adding a new
		hack to make Linux detect a faster cpu.
		Continuing on the Artesyn PM/PPC emulation mode.
		Adding an Algor emulation skeleton (P4032 and P5064);
		implementing some of the basics.
		Continuing on PPC emulation in general; usage of unimplemented
		SPRs is now easier to track, continuing on memory/exception
		related issues, etc.
20051118	More work on PPC emulation (tgpr0..3, exception handling,
		memory stuff, syscalls, etc.).
20051119	Changing the ARM dyntrans code to mostly use cpu->pc, and not
		necessarily use arm reg 15. Seems to work.
		Various PPC updates; continuing on the PReP emulation mode.
20051120	Adding a workaround/hack to dev_mc146818 to allow NetBSD/prep
		to detect the clock.
20051121	More cleanup of the PCI bus (memory and I/O bases, etc).
		Continuing on various PPC things (decrementer and timebase,
		WDCs on obio (on PReP) use irq 13, not 14/15).
20051122	Continuing on the CPC700 controller (interrupts etc) for PMPPC,
		and on PPC stuff in general.
		Finally! After some bug fixes to the virtual to physical addr
		translation, NetBSD/{prep,pmppc} 2.1 reach userland and are
		stable enough to be interacted with.
		More PCI updates; reverse-endian device access for PowerPC etc.
20051123	Generalizing the IEEE floating point subsystem (moving it out
		from src/cpus/cpu_mips_coproc.c into a new src/float_emul.c).
		Input via slave xterms was sometimes not really working; fixing
		this for ns16550, and a warning message is now displayed if
		multiple non-xterm consoles are active.
		Adding some PPC floating point support, etc.
		Various interrupt related updates (dev_wdc, _ns16550, _8259,
		and the isa32 common code in machine.c).
		NetBSD/prep can now be installed! :-) (Well, with some manual
		commands necessary before running sysinst.) Updating the
		documentation and various other things to reflect this.
20051124	Various minor documentation updates.
		Continuing the work on the DEC 21143 NIC.
20051125	LOTS of work on the 21143. Both OpenBSD and NetBSD work fine
		with it now, except that OpenBSD sometimes gives a time-out
		warning.
		Minor documentation updates.

==============  RELEASE 0.3.7  ==============
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 1.13 2005/11/24 12:32:11 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 100
102 #define MAX_UDP_CONNECTIONS 100
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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