Subversion Repositories planix.SVN

Rev

Rev 2 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
typedef struct Etherpkt	Etherpkt;
2 
typedef struct Netaddr	Netaddr;
3 
typedef struct Netfile	Netfile;
4 
typedef struct Netif	Netif;
5 
 
6 
enum
7 
{
8 
	Nmaxaddr=	64,
9 
	Nmhash=		31,
10 
 
11 
	Ncloneqid=	1,
12 
	Naddrqid,
13 
	N2ndqid,
14 
	N3rdqid,
15 
	Ndataqid,
16 
	Nctlqid,
17 
	Nstatqid,
18 
	Ntypeqid,
19 
	Nifstatqid,
20 
	Nmtuqid,
21 
};
22 
 
23 
/*
24 
 *  Macros to manage Qid's used for multiplexed devices
25 
 */
26 
#define NETTYPE(x)	(((ulong)x)&0x1f)
27 
#define NETID(x)	((((ulong)x))>>5)
28 
#define NETQID(i,t)	((((ulong)i)<<5)|(t))
29 
 
30 
/*
31 
 *  one per multiplexed connection
32 
 */
33 
struct Netfile
34 
{
35 
	QLock;
36 
 
37 
	int	inuse;
38 
	ulong	mode;
39 
	char	owner[KNAMELEN];
40 
 
41 
	int	type;			/* multiplexor type */
42 
	int	prom;			/* promiscuous mode */
43 
	int	scan;			/* base station scanning interval */
44 
	int	bridge;			/* bridge mode */
45 
	int	headersonly;		/* headers only - no data */
46 
	uchar	maddr[8];		/* bitmask of multicast addresses requested */
47 
	int	nmaddr;			/* number of multicast addresses */
48 
 
49 
	Queue	*in;			/* input buffer */
50 
};
51 
 
52 
/*
53 
 *  a network address
54 
 */
55 
struct Netaddr
56 
{
57 
	Netaddr	*next;		/* allocation chain */
58 
	Netaddr	*hnext;
59 
	uchar	addr[Nmaxaddr];
60 
	int	ref;
61 
};
62 
 
63 
/*
64 
 *  a network interface
65 
 */
66 
struct Netif
67 
{
68 
	QLock;
69 
 
70 
	/* multiplexing */
71 
	char	name[KNAMELEN];		/* for top level directory */
72 
	int	nfile;			/* max number of Netfiles */
73 
	Netfile	**f;
74 
 
75 
	/* about net */
76 
	int	limit;			/* flow control */
77 
	int	alen;			/* address length */
78 
	int	mbps;			/* megabits per sec */
79 
	int	link;			/* link status */
80 
	int	minmtu;
81 
	int 	maxmtu;
82 
	int	mtu;
83 
	uchar	addr[Nmaxaddr];
84 
	uchar	bcast[Nmaxaddr];
85 
	Netaddr	*maddr;			/* known multicast addresses */
86 
	int	nmaddr;			/* number of known multicast addresses */
87 
	Netaddr *mhash[Nmhash];		/* hash table of multicast addresses */
88 
	int	prom;			/* number of promiscuous opens */
89 
	int	scan;			/* number of base station scanners */
90 
	int	all;			/* number of -1 multiplexors */
91 
 
92 
	/* statistics */
93 
	int	misses;
94 
	uvlong	inpackets;
95 
	uvlong	outpackets;
96 
	int	crcs;		/* input crc errors */
97 
	int	oerrs;		/* output errors */
98 
	int	frames;		/* framing errors */
99 
	int	overflows;	/* packet overflows */
100 
	int	buffs;		/* buffering errors */
101 
	int	soverflows;	/* software overflow */
102 
 
103 
	/* routines for touching the hardware */
104 
	void	*arg;
105 
	void	(*promiscuous)(void*, int);
106 
	void	(*multicast)(void*, uchar*, int);
107 
	int	(*hwmtu)(void*, int);	/* get/set mtu */
108 
	void	(*scanbs)(void*, uint);	/* scan for base stations */
109 
};
110 
 
111 
void	netifinit(Netif*, char*, int, ulong);
112 
Walkqid*	netifwalk(Netif*, Chan*, Chan*, char **, int);
113 
Chan*	netifopen(Netif*, Chan*, int);
114 
void	netifclose(Netif*, Chan*);
115 
long	netifread(Netif*, Chan*, void*, long, ulong);
116 
Block*	netifbread(Netif*, Chan*, long, ulong);
117 
long	netifwrite(Netif*, Chan*, void*, long);
118 
int	netifwstat(Netif*, Chan*, uchar*, int);
119 
int	netifstat(Netif*, Chan*, uchar*, int);
120 
int	activemulti(Netif*, uchar*, int);
121 
 
122 
/*
123 
 *  Ethernet specific
124 
 */
125 
enum
126 
{
127 
	Eaddrlen=	6,
128 
	ETHERMINTU =	60,		/* minimum transmit size */
129 
	ETHERMAXTU =	1514,		/* maximum transmit size */
130 
	ETHERHDRSIZE =	14,		/* size of an ethernet header */
131 
 
132 
	/* ethernet packet types */
133 
	ETARP		= 0x0806,
134 
	ETIP4		= 0x0800,
135 
	ETIP6		= 0x86DD,
136 
};
137 
 
138 
struct Etherpkt
139 
{
140 
	uchar	d[Eaddrlen];
141 
	uchar	s[Eaddrlen];
142 
	uchar	type[2];
143 
	uchar	data[1500];
144 
};