-
Notifications
You must be signed in to change notification settings - Fork 8
/
iface.h
147 lines (123 loc) · 4.96 KB
/
iface.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
#ifndef _IFACE_H
#define _IFACE_H
#ifndef _GLOBAL_H
#include "global.h"
#endif
#ifndef _MBUF_H
#include "mbuf.h"
#endif
#ifndef _PROC_H
#include "proc.h"
#endif
/* Interface encapsulation mode table entry. An array of these structures
* are initialized in config.c with all of the information necessary
* to attach a device.
*/
struct iface; /* Defined later */
struct iftype {
char *name; /* Name of encapsulation technique */
int (*send)(struct mbuf **,struct iface *,int32,uint8);
/* Routine to send an IP datagram */
int (*output)(struct iface *,uint8 *,uint8 *,uint16,struct mbuf **);
/* Routine to send link packet */
char *(*format)(char *,uint8 *);
/* Function that formats addresses */
int (*scan)(uint8 *,char *);
/* Reverse of format */
int type; /* Type field for network process */
int hwalen; /* Length of hardware address, if any */
void (*rcvf)(struct iface *,struct mbuf **);
/* Function that handles incoming packets */
int (*addrtest)(struct iface *,struct mbuf *);
/* Function that tests incoming addresses */
void (*trace)(FILE *,struct mbuf **,int);
/* Function that decodes protocol headers */
int (*dinit)(struct iface *,int32,int,char **);
/* Function to initialize demand dialing */
int (*dstat)(struct iface *);
/* Function to display dialer status */
};
extern struct iftype Iftypes[];
/* Interface control structure */
struct iface {
struct iface *next; /* Linked list pointer */
char *name; /* Ascii string with interface name */
int32 addr; /* IP address */
int32 broadcast; /* Broadcast address */
int32 netmask; /* Network mask */
uint16 mtu; /* Maximum transmission unit size */
uint16 trace; /* Trace flags */
#define IF_TRACE_OUT 0x01 /* Output packets */
#define IF_TRACE_IN 0x10 /* Packets to me except broadcast */
#define IF_TRACE_ASCII 0x100 /* Dump packets in ascii */
#define IF_TRACE_HEX 0x200 /* Dump packets in hex/ascii */
#define IF_TRACE_NOBC 0x1000 /* Suppress broadcasts */
#define IF_TRACE_RAW 0x2000 /* Raw dump, if supported */
FILE *trfp; /* Stream to trace to */
struct iface *forw; /* Forwarding interface for output, if rx only */
struct proc *rxproc; /* Receiver process, if any */
struct proc *txproc; /* IP send process */
struct proc *supv; /* Supervisory process, if any */
struct mbuf *outq; /* IP datagram transmission queue */
int outlim; /* Limit on outq length */
int txbusy; /* Transmitter is busy */
void *dstate; /* Demand dialer link state, if any */
int (*dtickle)(struct iface *);
/* Function to tickle dialer, if any */
void (*dstatus)(struct iface *);
/* Function to display dialer state, if any */
/* Device dependent */
int dev; /* Subdevice number to pass to send */
/* To device -- control */
int32 (*ioctl)(struct iface *,int cmd,int set,int32 val);
/* From device -- when status changes */
int (*iostatus)(struct iface *,int cmd,int32 val);
/* Call before detaching */
int (*stop)(struct iface *);
uint8 *hwaddr; /* Device hardware address, if any */
/* Encapsulation dependent */
void *edv; /* Pointer to protocol extension block, if any */
int xdev; /* Associated Slip or Nrs channel, if any */
struct iftype *iftype; /* Pointer to appropriate iftype entry */
/* Routine to send an IP datagram */
int (*send)(struct mbuf **,struct iface *,int32,uint8);
/* Encapsulate any link packet */
int (*output)(struct iface *,uint8 *,uint8 *,uint16,struct mbuf **);
/* Send raw packet */
int (*raw)(struct iface *,struct mbuf **);
/* Display status */
void (*show)(struct iface *);
int (*discard)(struct iface *,struct mbuf **);
int (*echo)(struct iface *,struct mbuf **);
/* Counters */
int32 ipsndcnt; /* IP datagrams sent */
int32 rawsndcnt; /* Raw packets sent */
int32 iprecvcnt; /* IP datagrams received */
int32 rawrecvcnt; /* Raw packets received */
int32 lastsent; /* Clock time of last send */
int32 lastrecv; /* Clock time of last receive */
};
extern struct iface *Ifaces; /* Head of interface list */
extern struct iface Loopback; /* Optional loopback interface */
extern struct iface Encap; /* IP-in-IP pseudo interface */
/* Header put on front of each packet sent to an interface */
struct qhdr {
uint8 tos;
int32 gateway;
};
extern char Noipaddr[];
extern struct mbuf *Hopper;
/* In iface.c: */
int bitbucket(struct iface *ifp,struct mbuf **bp);
int if_detach(struct iface *ifp);
struct iface *if_lookup(char *name);
char *if_name(struct iface *ifp,char *comment);
void if_tx(int dev,void *arg1,void *unused);
struct iface *ismyaddr(int32 addr);
void network(int i,void *v1,void *v2);
int nu_send(struct mbuf **bpp,struct iface *ifp,int32 gateway,uint8 tos);
int nu_output(struct iface *,uint8 *,uint8 *,uint16,struct mbuf **);
int setencap(struct iface *ifp,char *mode);
/* In config.c: */
int net_route(struct iface *ifp,struct mbuf **bpp);
#endif /* _IFACE_H */