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/*
#pragma src "/sys/src/libip"
#pragma lib "libip.a"
#pragma varargck type "I" uchar*
#pragma varargck type "V" uchar*
#pragma varargck type "E" uchar*
#pragma varargck type "M" uchar*
*/
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
*/
enum
{
Udphdrsize= 36, /* size of a Udphdr */
};
typedef struct Udphdr Udphdr;
struct Udphdr
{
uchar raddr[IPaddrlen]; /* remote address and port */
uchar laddr[IPaddrlen]; /* local address and port */
uchar rport[2];
uchar lport[2];
};
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 equivip(uchar*, uchar*);
Ipifc* readipifc(char*, Ipifc*, int);
void hnputl(void*, uint);
void hnputs(void*, ushort);
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)
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