ref: dde3628d54073e0569bf565e6ec861e42cfa35f6
dir: /sys/src/cmd/nusb/ether/dat.h/
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); int (*eplinkspeed)(Dev*);