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1.1 root 1: /* ip.h */
2: /*
3: Copyright (C) 1992 Ross Biro
4:
5: This program is free software; you can redistribute it and/or modify
6: it under the terms of the GNU General Public License as published by
7: the Free Software Foundation; either version 2, or (at your option)
8: any later version.
9:
10: This program is distributed in the hope that it will be useful,
11: but WITHOUT ANY WARRANTY; without even the implied warranty of
12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13: GNU General Public License for more details.
14:
15: You should have received a copy of the GNU General Public License
16: along with this program; if not, write to the Free Software
17: Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18:
19: The Author may be reached as [email protected] or
20: C/O Department of Mathematics; Stanford University; Stanford, CA 94305
21: */
22: #ifndef _TCP_IP_H
23: #define _TCP_IP_H
24:
25: #include "dev.h"
26: #include <linux/sock_ioctl.h>
27: #include <netinet/protocols.h>
28:
29: struct rtable
30: {
31: unsigned long net;
32: unsigned long router;
33: struct device *dev;
34: struct rtable *next;
35: };
36:
37: struct route
38: {
39: char route_size;
40: char pointer;
41: unsigned long route[MAX_ROUTE];
42: };
43:
44: struct timestamp
45: {
46: unsigned char len;
47: unsigned char ptr;
48: union
49: {
50: unsigned char flags:4, overflow:4;
51: unsigned char full_char;
52: } x;
53: unsigned long data[9];
54: };
55:
56: struct options
57: {
58: struct route record_route;
59: struct route loose_route;
60: struct route strict_route;
61: struct timestamp tstamp;
62: unsigned short security;
63: unsigned short compartment;
64: unsigned short handling;
65: unsigned short stream;
66: unsigned tcc;
67: };
68:
69:
70:
71: struct ip_header
72: {
73: unsigned char ihl:4, version:4;
74: unsigned char tos;
75: unsigned short tot_len;
76: unsigned short id;
77: unsigned short frag_off;
78: unsigned char ttl;
79: unsigned char protocol;
80: unsigned short check;
81: unsigned long saddr;
82: unsigned long daddr;
83: /*The options start here. */
84: };
85:
86:
87: #define IPOPT_END 0
88: #define IPOPT_NOOP 1
89: #define IPOPT_SEC 130
90: #define IPOPT_LSRR 131
91: #define IPOPT_SSRR 137
92: #define IPOPT_RR 7
93: #define IPOPT_SID 136
94: #define IPOPT_TIMESTAMP 68
95: #define IP_LOOPBACK_ADDR 0x0100007f
96:
97: static inline unsigned short
98: net16(unsigned short x)
99: {
100: __asm__("xchgb %%cl,%%ch": "=c" (x) : "0" (x) : "cx");
101: return (x);
102: }
103:
104: static inline unsigned long
105: net32(unsigned long x)
106: {
107: __asm__("xchgb %%cl,%%ch\n"
108: "\t roll $16,%%ecx\n"
109: "\t xchgb %%cl,%%ch":"=c" (x):"0"(x):"cx");
110: return (x);
111: }
112:
113: /* change the name of this. */
114: #define MAX_IP_PROTOS 32 /* Must be a power of 2 */
115:
116: /* This is used to register protocols. */
117: struct ip_protocol
118: {
119: int (*handler) (struct sk_buff *skb, struct device *dev,
120: struct options *opt, unsigned long daddr,
121: unsigned short len, unsigned long saddr,
122: int redo, struct ip_protocol *protocol);
123: void (*err_handler) (int err, unsigned char *buff, unsigned long daddr,
124: unsigned long saddr, struct ip_protocol *ipprot);
125: struct ip_protocol *next;
126: unsigned char protocol;
127: unsigned char copy:1;
128: void *data;
129: };
130:
131: extern struct ip_protocol *ip_protocol_base;
132: extern struct ip_protocol *ip_protos[MAX_IP_PROTOS];
133:
134: #define MAX_IP_ADDRES 5
135: extern unsigned long ip_addr[MAX_IP_ADDRES];
136: #define MY_IP_ADDR ip_addr[0];
137: int my_ip_addr(unsigned long);
138:
139: #include "eth.h"
140:
141: void
142: print_iph (struct ip_header *);
143:
144: void
145: print_eth (struct enet_header *);
146:
147: int ip_set_dev (struct ip_config *);
148:
149: int ip_build_header(struct sk_buff *skb, unsigned long saddr,
150: unsigned long daddr, struct device **dev, int type,
151: struct options *opt, int len);
152: void ip_queue_xmit (volatile struct sock *sk, struct device *dev,
153: struct sk_buff *skb, int free);
154: void ip_retransmit(volatile struct sock *sk, int all);
155: int ip_rcv(struct sk_buff *buff, struct device *dev, struct packet_type *);
156: void add_ip_protocol (struct ip_protocol *);
157: int delete_ip_protocol (struct ip_protocol *);
158: int ip_handoff (volatile struct sock *sk);
159: unsigned short ip_compute_csum (unsigned char *buff, int len);
160: int ip_addr_match (unsigned long, unsigned long);
161: void add_route (struct rtable *rt);
162: void ip_route_check (unsigned long daddr);
163:
164: #endif
165:
166:
167:
168:
169:
170:
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