1993/0525/port/netif.h (diff list | history)

port/netif.h on 1993/0525
1993/0525		typedef struct Etherpkt Etherpkt; typedef struct Netfile Netfile; typedef struct Netif Netif; enum { Nmaxaddr= 64, Ncloneqid= 1, N2ndqid, N3rdqid, Ndataqid, Nctlqid, Nstatqid, Ntypeqid, }; /* * Macros to manage Qid's used for multiplexed devices */ #define NETTYPE(x) ((x)&0x1f) #define NETID(x) (((x)&~CHDIR)>>5) #define NETQID(i,t) (((i)<<5)|(t)) /* * one per multiplexed connection */ struct Netfile { QLock; int inuse; ulong mode; char owner[NAMELEN]; int type; /* multiplexor type */ int prom; /* promiscuous mode */ Queue *in; /* input buffer */ }; /* * a network interface */ struct Netif { QLock; /* multiplexing */ char *name; /* for top level directory */ int nfile; /* max number of Netfiles */ Netfile **f; Queue *out; /* output buffer */ /* about net */ int limit; /* flow control */ int alen; /* address length */ uchar addr[Nmaxaddr]; uchar bcast[Nmaxaddr]; int prom; /* statistics */ int misses; int inpackets; int outpackets; int crcs; /* input crc errors */ int oerrs; /* output erros */ int frames; /* framing errors */ int overflows; /* packet overflows */ int buffs; /* buffering errors */ /* routines for touching the hardware */ void *arg; void (*promiscuous)(void*, int); }; void netifinit(Netif*, char*, int, ulong); int netifwalk(Netif*, Chan*, char*); Chan* netifopen(Netif*, Chan*, int); void netifclose(Netif*, Chan*); long netifread(Netif*, Chan*, void*, long, ulong); long netifwrite(Netif*, Chan*, void*, long); void netifwstat(Netif*, Chan*, char*); void netifstat(Netif*, Chan*, char*); /* * Ethernet specific */ enum { Eaddrlen= 6, ETHERMINTU = 60, /* minimum transmit size */ ETHERMAXTU = 1514, /* maximum transmit size */ ETHERHDRSIZE = 14, /* size of an ethernet header */ }; struct Etherpkt { uchar d[Eaddrlen]; uchar s[Eaddrlen]; uchar type[2]; uchar data[1500]; }; extern uchar etherbcast[6]; /* * FDDI specific */