212 lines
4.9 KiB
C
212 lines
4.9 KiB
C
/*
|
|
* This file is part of the UCB release of Plan 9. It is subject to the license
|
|
* terms in the LICENSE file found in the top-level directory of this
|
|
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
|
* part of the UCB release of Plan 9, including this file, may be copied,
|
|
* modified, propagated, or distributed except according to the terms contained
|
|
* in the LICENSE file.
|
|
*/
|
|
|
|
#pragma src "/sys/src/lib/ip"
|
|
#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 */
|
|
uint8_t ip[IPaddrlen];
|
|
uint8_t mask[IPaddrlen];
|
|
uint8_t net[IPaddrlen]; /* ip & mask */
|
|
uint32_t preflt; /* preferred lifetime */
|
|
uint32_t 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];
|
|
uint8_t sendra6; /* on == send router adv */
|
|
uint8_t recvra6; /* on == rcv router adv */
|
|
int mtu;
|
|
uint32_t pktin;
|
|
uint32_t pktout;
|
|
uint32_t errin;
|
|
uint32_t 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 {
|
|
uint8_t vcf[4]; /* version:4, traffic class:8, flow label:20 */
|
|
uint8_t ploadlen[2]; /* payload length: packet length - 40 */
|
|
uint8_t proto; /* next header type */
|
|
uint8_t ttl; /* hop limit */
|
|
uint8_t src[IPaddrlen]; /* source address */
|
|
uint8_t dst[IPaddrlen]; /* destination address */
|
|
uint8_t payload[];
|
|
};
|
|
|
|
/*
|
|
* user-level icmpv6 with control message "headers"
|
|
*/
|
|
typedef struct Icmp6hdr Icmp6hdr;
|
|
struct Icmp6hdr {
|
|
uint8_t _0_[8];
|
|
uint8_t laddr[IPaddrlen]; /* local address */
|
|
uint8_t 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
|
|
{
|
|
uint8_t raddr[IPaddrlen]; /* V6 remote address */
|
|
uint8_t laddr[IPaddrlen]; /* V6 local address */
|
|
uint8_t ifcaddr[IPaddrlen]; /* V6 ifc addr msg was received on */
|
|
uint8_t rport[2]; /* remote port */
|
|
uint8_t lport[2]; /* local port */
|
|
};
|
|
|
|
uint8_t* defmask(uint8_t*);
|
|
void maskip(uint8_t*, uint8_t*, uint8_t*);
|
|
int eipfmt(Fmt*);
|
|
int isv4(uint8_t*);
|
|
int64_t parseip(uint8_t*, char*);
|
|
int64_t parseipmask(uint8_t*, char*);
|
|
char* v4parseip(uint8_t*, char*);
|
|
char* v4parsecidr(uint8_t*, uint8_t*, char*);
|
|
int parseether(uint8_t*, char*);
|
|
int myipaddr(uint8_t*, char*);
|
|
int myetheraddr(uint8_t*, char*);
|
|
int equivip4(uint8_t*, uint8_t*);
|
|
int equivip6(uint8_t*, uint8_t*);
|
|
|
|
Ipifc* readipifc(char*, Ipifc*, int);
|
|
|
|
void hnputv(void*, uint64_t);
|
|
void hnputl(void*, uint32_t);
|
|
void hnputs(void*, uint16_t);
|
|
uint64_t nhgetv(void*);
|
|
uint32_t nhgetl(void*);
|
|
uint16_t nhgets(void*);
|
|
uint16_t ptclbsum(uint8_t*, int);
|
|
|
|
int v6tov4(uint8_t*, uint8_t*);
|
|
void v4tov6(uint8_t*, uint8_t*);
|
|
|
|
#define ipcmp(x, y) jehanne_memcmp(x, y, IPaddrlen)
|
|
#define ipmove(x, y) jehanne_memmove(x, y, IPaddrlen)
|
|
|
|
extern uint8_t IPv4bcast[IPaddrlen];
|
|
extern uint8_t IPv4bcastobs[IPaddrlen];
|
|
extern uint8_t IPv4allsys[IPaddrlen];
|
|
extern uint8_t IPv4allrouter[IPaddrlen];
|
|
extern uint8_t IPnoaddr[IPaddrlen];
|
|
extern uint8_t v4prefix[IPaddrlen];
|
|
extern uint8_t IPallbits[IPaddrlen];
|
|
|
|
#define CLASS(p) ((*(uint8_t*)(p))>>6)
|
|
|
|
#pragma varargck type "I" uchar*
|
|
#pragma varargck type "V" uchar*
|
|
#pragma varargck type "E" uchar*
|
|
#pragma varargck type "M" uchar*
|