202 lines
4.3 KiB
C
202 lines
4.3 KiB
C
#pragma src "/sys/src/libip"
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#pragma lib "libip.a"
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enum
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{
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IPaddrlen= 16,
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IPv4addrlen= 4,
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IPv4off= 12,
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IPllen= 4,
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IPV4HDR_LEN= 20,
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/* vihl & vcf[0] values */
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IP_VER4= 0x40,
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IP_VER6= 0x60,
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};
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/*
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* for reading /net/ipifc
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*/
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typedef struct Ipifc Ipifc;
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typedef struct Iplifc Iplifc;
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typedef struct Ipv6rp Ipv6rp;
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/* local address */
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struct Iplifc
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{
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Iplifc *next;
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/* per address on the ip interface */
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uchar ip[IPaddrlen];
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uchar mask[IPaddrlen];
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uchar net[IPaddrlen]; /* ip & mask */
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ulong preflt; /* preferred lifetime */
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ulong validlt; /* valid lifetime */
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};
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/* default values, one per stack */
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struct Ipv6rp
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{
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int mflag;
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int oflag;
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int maxraint;
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int minraint;
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int linkmtu;
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int reachtime;
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int rxmitra;
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int ttl;
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int routerlt;
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};
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/* actual interface */
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struct Ipifc
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{
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Ipifc *next;
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Iplifc *lifc;
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/* per ip interface */
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int index; /* number of interface in ipifc dir */
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char dev[64];
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uchar sendra6; /* on == send router adv */
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uchar recvra6; /* on == rcv router adv */
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int mtu;
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ulong pktin;
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ulong pktout;
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ulong errin;
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ulong errout;
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Ipv6rp rp;
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};
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#define ISIPV6MCAST(addr) ((addr)[0] == 0xff)
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#define ISIPV6LINKLOCAL(addr) ((addr)[0] == 0xfe && ((addr)[1] & 0xc0) == 0x80)
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/*
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* ipv6 constants
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* `ra' is `router advertisement', `rs' is `router solicitation'.
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* `na' is `neighbour advertisement'.
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*/
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enum {
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IPV6HDR_LEN = 40,
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/* neighbour discovery option types */
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V6nd_srclladdr = 1,
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V6nd_targlladdr = 2,
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V6nd_pfxinfo = 3,
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V6nd_redirhdr = 4,
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V6nd_mtu = 5,
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/* new since rfc2461; see iana.org/assignments/icmpv6-parameters */
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V6nd_home = 8,
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V6nd_srcaddrs = 9, /* rfc3122 */
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V6nd_ip = 17,
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/* /lib/rfc/drafts/draft-jeong-dnsop-ipv6-dns-discovery-12.txt */
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V6nd_rdns = 25,
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/* plan 9 extensions */
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V6nd_9fs = 250,
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V6nd_9auth = 251,
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/* Router constants (all times in ms.) */
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Maxv6initraintvl= 16000,
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Maxv6initras = 3,
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Maxv6finalras = 3,
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Minv6interradelay= 3000,
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Maxv6radelay = 500,
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/* Host constants */
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Maxv6rsdelay = 1000,
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V6rsintvl = 4000,
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Maxv6rss = 3,
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/* Node constants */
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Maxv6mcastrss = 3,
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Maxv6unicastrss = 3,
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Maxv6anycastdelay= 1000,
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Maxv6na = 3,
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V6reachabletime = 30000,
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V6retranstimer = 1000,
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V6initprobedelay= 5000,
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};
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/* V6 header on the wire */
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typedef struct Ip6hdr Ip6hdr;
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struct Ip6hdr {
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uchar vcf[4]; /* version:4, traffic class:8, flow label:20 */
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uchar ploadlen[2]; /* payload length: packet length - 40 */
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uchar proto; /* next header type */
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uchar ttl; /* hop limit */
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uchar src[IPaddrlen]; /* source address */
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uchar dst[IPaddrlen]; /* destination address */
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uchar payload[];
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};
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/*
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* user-level icmpv6 with control message "headers"
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*/
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typedef struct Icmp6hdr Icmp6hdr;
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struct Icmp6hdr {
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uchar _0_[8];
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uchar laddr[IPaddrlen]; /* local address */
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uchar raddr[IPaddrlen]; /* remote address */
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};
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/*
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* user level udp headers with control message "headers"
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*/
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enum
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{
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Udphdrsize= 52, /* size of a Udphdr */
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};
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typedef struct Udphdr Udphdr;
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struct Udphdr
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{
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uchar raddr[IPaddrlen]; /* V6 remote address */
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uchar laddr[IPaddrlen]; /* V6 local address */
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uchar ifcaddr[IPaddrlen]; /* V6 ifc addr msg was received on */
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uchar rport[2]; /* remote port */
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uchar lport[2]; /* local port */
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};
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uchar* defmask(uchar*);
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void maskip(uchar*, uchar*, uchar*);
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int eipfmt(Fmt*);
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int isv4(uchar*);
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vlong parseip(uchar*, char*);
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vlong parseipmask(uchar*, char*);
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char* v4parseip(uchar*, char*);
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char* v4parsecidr(uchar*, uchar*, char*);
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int parseether(uchar*, char*);
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int myipaddr(uchar*, char*);
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int myetheraddr(uchar*, char*);
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int equivip4(uchar*, uchar*);
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int equivip6(uchar*, uchar*);
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Ipifc* readipifc(char*, Ipifc*, int);
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void hnputv(void*, uvlong);
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void hnputl(void*, uint);
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void hnputs(void*, ushort);
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uvlong nhgetv(void*);
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uint nhgetl(void*);
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ushort nhgets(void*);
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ushort ptclbsum(uchar*, int);
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int v6tov4(uchar*, uchar*);
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void v4tov6(uchar*, uchar*);
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#define ipcmp(x, y) memcmp(x, y, IPaddrlen)
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#define ipmove(x, y) memmove(x, y, IPaddrlen)
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extern uchar IPv4bcast[IPaddrlen];
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extern uchar IPv4bcastobs[IPaddrlen];
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extern uchar IPv4allsys[IPaddrlen];
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extern uchar IPv4allrouter[IPaddrlen];
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extern uchar IPnoaddr[IPaddrlen];
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extern uchar v4prefix[IPaddrlen];
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extern uchar IPallbits[IPaddrlen];
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#define CLASS(p) ((*(uchar*)(p))>>6)
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#pragma varargck type "I" uchar*
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#pragma varargck type "V" uchar*
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#pragma varargck type "E" uchar*
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#pragma varargck type "M" uchar*
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