1992/0922/pc/io.h (diff list | history)

1992/0904/sys/src/9/pc/io.h:24,26 – 1992/0922/sys/src/9/pc/io.h:24,120 (short | long | prev | next)
Add generic ethernet structures. rsc Fri Mar 4 12:44:25 2005
1991/0910		Syscallvec= 64,
1991/0704		};
1992/0922		typedef struct EtherHw EtherHw; typedef struct EtherBuf EtherBuf; typedef struct EtherType EtherType; typedef struct EtherCtlr EtherCtlr; struct EtherHw { int (*reset)(EtherCtlr*); void (*init)(EtherCtlr*); void (*mode)(EtherCtlr*, int); void (*online)(EtherCtlr*, int); void (*receive)(EtherCtlr*); void (*transmit)(EtherCtlr*); void (*intr)(EtherCtlr*); void (*tweak)(EtherCtlr*); int addr; /* interface address */ uchar *ram; /* interface shared memory address */ int bt16; /* true if a 16 bit interface */ int irq; /* interrupt level */ int size; uchar tstart; uchar pstart; uchar pstop; }; struct EtherBuf { uchar owner; uchar busy; ushort len; uchar pkt[sizeof(Etherpkt)]; }; enum { Host = 0, /* buffer owned by host */ Interface = 1, /* buffer owned by interface */ NType = 9, /* types/interface */ }; /* * one per ethernet packet type */ struct EtherType { QLock; Netprot; /* stat info */ int type; /* ethernet type */ int prom; /* promiscuous mode */ Queue *q; int inuse; EtherCtlr *ctlr; }; /* * per ethernet */ struct EtherCtlr { QLock; EtherHw *hw; int present; ushort nrb; /* number of software receive buffers */ ushort ntb; /* number of software transmit buffers */ EtherBuf *rb; /* software receive buffers */ EtherBuf *tb; /* software transmit buffers */ uchar ea[6]; /* ethernet address */ uchar ba[6]; /* broadcast address */ Rendez rr; /* rendezvous for a receive buffer */ ushort rh; /* first receive buffer belonging to host */ ushort ri; /* first receive buffer belonging to interface */ Rendez tr; /* rendezvous for a transmit buffer */ QLock tlock; /* semaphore on th */ ushort th; /* first transmit buffer belonging to host */ ushort ti; /* first transmit buffer belonging to interface */ EtherType type[NType]; uchar prom; /* true if promiscuous mode */ uchar kproc; /* true if kproc started */ char name[NAMELEN]; /* name of kproc */ Network net; Queue lbq; /* software loopback packet queue */ int inpackets; int outpackets; int crcs; /* input crc errors */ int oerrs; /* output errors */ int frames; /* framing errors */ int overflows; /* packet overflows */ int buffs; /* buffering errors */ };