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#pragma src "/sys/src/libip"
#pragma lib "libip.a"
enum
{
IPaddrlen= 16,
IPv4addrlen= 4,
IPv4off= 12,
IPllen= 4,
IPV4HDR_LEN= 20,
/* vihl & vcf[0] values */
IP_VER4= 0x40,
IP_VER6= 0x60,
};
/*
* 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;
};
#define ISIPV6MCAST(addr) ((addr)[0] == 0xff)
#define ISIPV6LINKLOCAL(addr) ((addr)[0] == 0xfe && ((addr)[1] & 0xc0) == 0x80)
/*
* ipv6 constants
* `ra' is `router advertisement', `rs' is `router solicitation'.
* `na' is `neighbour advertisement'.
*/
enum {
IPV6HDR_LEN = 40,
/* neighbour discovery option types */
V6nd_srclladdr = 1,
V6nd_targlladdr = 2,
V6nd_pfxinfo = 3,
V6nd_redirhdr = 4,
V6nd_mtu = 5,
/* new since rfc2461; see iana.org/assignments/icmpv6-parameters */
V6nd_home = 8,
V6nd_srcaddrs = 9, /* rfc3122 */
V6nd_ip = 17,
/* /lib/rfc/drafts/draft-jeong-dnsop-ipv6-dns-discovery-12.txt */
V6nd_rdns = 25,
/* plan 9 extensions */
V6nd_9fs = 250,
V6nd_9auth = 251,
/* Router constants (all times in ms.) */
Maxv6initraintvl= 16000,
Maxv6initras = 3,
Maxv6finalras = 3,
Minv6interradelay= 3000,
Maxv6radelay = 500,
/* Host constants */
Maxv6rsdelay = 1000,
V6rsintvl = 4000,
Maxv6rss = 3,
/* Node constants */
Maxv6mcastrss = 3,
Maxv6unicastrss = 3,
Maxv6anycastdelay= 1000,
Maxv6na = 3,
V6reachabletime = 30000,
V6retranstimer = 1000,
V6initprobedelay= 5000,
};
/* V6 header on the wire */
typedef struct Ip6hdr Ip6hdr;
struct Ip6hdr {
uchar vcf[4]; /* version:4, traffic class:8, flow label:20 */
uchar ploadlen[2]; /* payload length: packet length - 40 */
uchar proto; /* next header type */
uchar ttl; /* hop limit */
uchar src[IPaddrlen]; /* source address */
uchar dst[IPaddrlen]; /* destination address */
uchar payload[];
};
/*
* user-level icmpv6 with control message "headers"
*/
typedef struct Icmp6hdr Icmp6hdr;
struct Icmp6hdr {
uchar _0_[8];
uchar laddr[IPaddrlen]; /* local address */
uchar raddr[IPaddrlen]; /* remote address */
};
/*
* 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*);
vlong parseip(uchar*, char*);
vlong 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*
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