Import sources from 2011-03-30 iso image

1 files changed, 188 insertions, 0 deletions

diff --git a/sys/src/9/ip/ipv6.h b/sys/src/9/ip/ipv6.h
new file mode 100755
index 000000000..e4a0144b4
--- /dev/null
+++ b/sys/src/9/ip/ipv6.h
@@ -0,0 +1,188 @@
+/*
+ * Internet Protocol Version 6
+ *
+ * rfc2460 defines the protocol, rfc2461 neighbour discovery, and
+ * rfc2462 address autoconfiguration.  rfc4443 defines ICMP; was rfc2463.
+ * rfc4291 defines the address architecture (including prefices), was rfc3513.
+ * rfc4007 defines the scoped address architecture.
+ *
+ * global unicast is anything but unspecified (::), loopback (::1),
+ * multicast (ff00::/8), and link-local unicast (fe80::/10).
+ *
+ * site-local (fec0::/10) is now deprecated, originally by rfc3879.
+ *
+ * Unique Local IPv6 Unicast Addresses are defined by rfc4193.
+ * prefix is fc00::/7, scope is global, routing is limited to roughly a site.
+ */
+#define isv6mcast(addr)	  ((addr)[0] == 0xff)
+#define islinklocal(addr) ((addr)[0] == 0xfe && ((addr)[1] & 0xc0) == 0x80)
+
+#define optexsts(np)	(nhgets((np)->ploadlen) > 24)
+#define issmcast(addr)	(memcmp((addr), v6solicitednode, 13) == 0)
+
+#ifndef MIN
+#define MIN(a, b) ((a) <= (b)? (a): (b))
+#endif
+
+enum {				/* Header Types */
+	HBH		= 0,	/* hop-by-hop multicast routing protocol */
+	ICMP		= 1,
+	IGMP		= 2,
+	GGP		= 3,
+	IPINIP		= 4,
+	ST		= 5,
+	TCP		= 6,
+	UDP		= 17,
+	ISO_TP4		= 29,
+	RH		= 43,
+	FH		= 44,
+	IDRP		= 45,
+	RSVP		= 46,
+	AH		= 51,
+	ESP		= 52,
+	ICMPv6		= 58,
+	NNH		= 59,
+	DOH		= 60,
+	ISO_IP		= 80,
+	IGRP		= 88,
+	OSPF		= 89,
+
+	Maxhdrtype	= 256,
+};
+
+enum {
+	/* multicast flags and scopes */
+
+//	Well_known_flg	= 0,
+//	Transient_flg	= 1,
+
+//	Interface_local_scop = 1,
+	Link_local_scop	= 2,
+//	Site_local_scop	= 5,
+//	Org_local_scop	= 8,
+	Global_scop	= 14,
+
+	/* various prefix lengths */
+	SOLN_PREF_LEN	= 13,
+
+	/* icmpv6 unreachability codes */
+	Icmp6_no_route		= 0,
+	Icmp6_ad_prohib		= 1,
+	Icmp6_out_src_scope	= 2,
+	Icmp6_adr_unreach	= 3,
+	Icmp6_port_unreach	= 4,
+	Icmp6_gress_src_fail	= 5,
+	Icmp6_rej_route		= 6,
+	Icmp6_unknown		= 7,  /* our own invention for internal use */
+
+	/* various flags & constants */
+	v6MINTU		= 1280,
+	HOP_LIMIT	= 255,
+	IP6HDR		= 40,		/* sizeof(Ip6hdr) = 8 + 2*16 */
+
+	/* option types */
+
+	/* neighbour discovery */
+	SRC_LLADDR	= 1,
+	TARGET_LLADDR	= 2,
+	PREFIX_INFO	= 3,
+	REDIR_HEADER	= 4,
+	MTU_OPTION	= 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,
+
+	SRC_UNSPEC	= 0,
+	SRC_UNI		= 1,
+	TARG_UNI	= 2,
+	TARG_MULTI	= 3,
+
+	Tunitent	= 1,
+	Tuniproxy	= 2,
+	Tunirany	= 3,
+
+	/* Node constants */
+	MAX_MULTICAST_SOLICIT	= 3,
+	RETRANS_TIMER		= 1000,
+};
+
+typedef struct Ip6hdr	Ip6hdr;
+typedef struct Opthdr	Opthdr;
+typedef struct Routinghdr Routinghdr;
+typedef struct Fraghdr6	Fraghdr6;
+
+/* we do this in case there's padding at the end of Ip6hdr */
+#define IPV6HDR \
+	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]; \
+	uchar	dst[IPaddrlen]
+
+struct	Ip6hdr {
+	IPV6HDR;
+	uchar	payload[];
+};
+
+struct	Opthdr {		/* unused */
+	uchar	nexthdr;
+	uchar	len;
+};
+
+/*
+ * Beware routing header type 0 (loose source routing); see
+ * http://www.secdev.org/conf/IPv6_RH_security-csw07.pdf.
+ * Type 1 is unused.  Type 2 is for MIPv6 (mobile IPv6) filtering
+ * against type 0 header.
+ */
+struct	Routinghdr {		/* unused */
+	uchar	nexthdr;
+	uchar	len;
+	uchar	rtetype;
+	uchar	segrem;
+};
+
+struct	Fraghdr6 {
+	uchar	nexthdr;
+	uchar	res;
+	uchar	offsetRM[2];	/* Offset, Res, M flag */
+	uchar	id[4];
+};
+
+extern uchar v6allnodesN[IPaddrlen];
+extern uchar v6allnodesL[IPaddrlen];
+extern uchar v6allroutersN[IPaddrlen];
+extern uchar v6allroutersL[IPaddrlen];
+extern uchar v6allnodesNmask[IPaddrlen];
+extern uchar v6allnodesLmask[IPaddrlen];
+extern uchar v6solicitednode[IPaddrlen];
+extern uchar v6solicitednodemask[IPaddrlen];
+extern uchar v6Unspecified[IPaddrlen];
+extern uchar v6loopback[IPaddrlen];
+extern uchar v6loopbackmask[IPaddrlen];
+extern uchar v6linklocal[IPaddrlen];
+extern uchar v6linklocalmask[IPaddrlen];
+extern uchar v6multicast[IPaddrlen];
+extern uchar v6multicastmask[IPaddrlen];
+
+extern int v6llpreflen;
+extern int v6mcpreflen;
+extern int v6snpreflen;
+extern int v6aNpreflen;
+extern int v6aLpreflen;
+
+extern int ReTransTimer;
+
+void ipv62smcast(uchar *, uchar *);
+void icmpns(Fs *f, uchar* src, int suni, uchar* targ, int tuni, uchar* mac);
+void icmpna(Fs *f, uchar* src, uchar* dst, uchar* targ, uchar* mac, uchar flags);
+void icmpttlexceeded6(Fs *f, Ipifc *ifc, Block *bp);
+void icmppkttoobig6(Fs *f, Ipifc *ifc, Block *bp);
+void icmphostunr(Fs *f, Ipifc *ifc, Block *bp, int code, int free);