#pragma src "/sys/src/libip" #pragma lib "libip.a" enum { IPaddrlen= 16, IPv4addrlen= 4, IPv4off= 12, IPllen= 4, }; /* * for reading /net/ipifc */ typedef struct Ipifc Ipifc; typedef struct Iplifc Iplifc; typedef struct Ipv6rp Ipv6rp; /* local address */ struct Iplifc { Iplifc *next; /* per address on the ip interface */ uchar ip[IPaddrlen]; uchar mask[IPaddrlen]; uchar net[IPaddrlen]; /* ip & mask */ ulong preflt; /* preferred lifetime */ ulong validlt; /* valid lifetime */ }; /* default values, one per stack */ struct Ipv6rp { int mflag; int oflag; int maxraint; int minraint; int linkmtu; int reachtime; int rxmitra; int ttl; int routerlt; }; /* actual interface */ struct Ipifc { Ipifc *next; Iplifc *lifc; /* per ip interface */ int index; /* number of interface in ipifc dir */ char dev[64]; uchar sendra6; /* on == send router adv */ uchar recvra6; /* on == rcv router adv */ int mtu; ulong pktin; ulong pktout; ulong errin; ulong errout; Ipv6rp rp; }; /* * user level udp headers with control message "headers" */ enum { Udphdrsize= 52, /* size of a Udphdr */ }; typedef struct Udphdr Udphdr; struct Udphdr { uchar raddr[IPaddrlen]; /* V6 remote address */ uchar laddr[IPaddrlen]; /* V6 local address */ uchar ifcaddr[IPaddrlen]; /* V6 ifc addr msg was received on */ uchar rport[2]; /* remote port */ uchar lport[2]; /* local port */ }; uchar* defmask(uchar*); void maskip(uchar*, uchar*, uchar*); int eipfmt(Fmt*); int isv4(uchar*); ulong parseip(uchar*, char*); ulong parseipmask(uchar*, char*); char* v4parseip(uchar*, char*); char* v4parsecidr(uchar*, uchar*, char*); int parseether(uchar*, char*); int myipaddr(uchar*, char*); int myetheraddr(uchar*, char*); int equivip4(uchar*, uchar*); int equivip6(uchar*, uchar*); Ipifc* readipifc(char*, Ipifc*, int); void hnputv(void*, uvlong); void hnputl(void*, uint); void hnputs(void*, ushort); uvlong nhgetv(void*); uint nhgetl(void*); ushort nhgets(void*); ushort ptclbsum(uchar*, int); int v6tov4(uchar*, uchar*); void v4tov6(uchar*, uchar*); #define ipcmp(x, y) memcmp(x, y, IPaddrlen) #define ipmove(x, y) memmove(x, y, IPaddrlen) extern uchar IPv4bcast[IPaddrlen]; extern uchar IPv4bcastobs[IPaddrlen]; extern uchar IPv4allsys[IPaddrlen]; extern uchar IPv4allrouter[IPaddrlen]; extern uchar IPnoaddr[IPaddrlen]; extern uchar v4prefix[IPaddrlen]; extern uchar IPallbits[IPaddrlen]; #define CLASS(p) ((*(uchar*)(p))>>6) #pragma varargck type "I" uchar* #pragma varargck type "V" uchar* #pragma varargck type "E" uchar* #pragma varargck type "M" uchar*