Import sources from 2011-03-30 iso image - sys/include

1 files changed, 202 insertions, 0 deletions

diff --git a/sys/include/ip.h b/sys/include/ip.h
new file mode 100755
index 000000000..a719a1b41
--- /dev/null
+++ b/sys/include/ip.h
@@ -0,0 +1,202 @@
+#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*