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typedef struct Block Block;
struct Block
{
Block *next;
uchar *rp;
uchar *wp;
uchar *lim;
uchar base[];
};
#define BLEN(s) ((s)->wp - (s)->rp)
Block* allocb(int size);
Block* copyblock(Block*, int);
#define freeb(b) free(b)
enum {
Eaddrlen= 6,
ETHERHDRSIZE= 14, /* size of an ethernet header */
Maxpkt= 2000,
};
typedef struct Macent Macent;
struct Macent
{
uchar ea[Eaddrlen];
ushort port;
};
typedef struct Etherpkt Etherpkt;
struct Etherpkt
{
uchar d[Eaddrlen];
uchar s[Eaddrlen];
uchar type[2];
uchar data[1500];
};
enum
{
Cdcunion = 6,
Scether = 6,
Fnether = 15,
};
int debug;
int setmac;
int nprom;
int nmulti;
uchar multiaddr[32][Eaddrlen];
/* to be filled in by *init() */
uchar macaddr[Eaddrlen];
Macent mactab[127];
void etheriq(Block*);
int (*epreceive)(Dev*);
void (*eptransmit)(Dev*, Block*);
int (*eppromiscuous)(Dev*, int);
int (*epmulticast)(Dev*, uchar*, int);
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