20060303

1 files changed, 185 insertions, 0 deletions

diff --git a/os/ip/ipv6.h b/os/ip/ipv6.h
new file mode 100644
index 00000000..8da63cfd
--- /dev/null
+++ b/os/ip/ipv6.h
@@ -0,0 +1,185 @@
+#define MIN(a, b) ((a) <= (b) ? (a) : (b))
+
+/* rfc 3513 defines the address prefices */
+#define isv6mcast(addr)	  ((addr)[0] == 0xff)
+#define islinklocal(addr) ((addr)[0] == 0xfe && ((addr)[1] & 0xc0) == 0x80)
+#define issitelocal(addr) ((addr)[0] == 0xfe && ((addr)[1] & 0xc0) == 0xc0)
+#define isv6global(addr) (((addr)[0] & 0xe0) == 0x20)
+
+#define optexsts(np) (nhgets((np)->ploadlen) > 24)
+#define issmcast(addr) (memcmp((addr), v6solicitednode, 13) == 0)
+
+/* from RFC 2460 */
+
+typedef struct Ip6hdr     Ip6hdr;
+typedef struct Opthdr     Opthdr;
+typedef struct Routinghdr Routinghdr;
+typedef struct Fraghdr6    Fraghdr6;
+
+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];
+	uchar dst[IPaddrlen];
+};
+
+struct Opthdr {
+	uchar nexthdr;
+	uchar len;
+};
+
+struct Routinghdr {
+	uchar nexthdr;
+	uchar len;
+	uchar rtetype;
+	uchar segrem;
+};
+
+struct Fraghdr6 {
+	uchar nexthdr;
+	uchar res;
+	uchar offsetRM[2];	// Offset, Res, M flag
+	uchar id[4];
+};
+
+
+enum {			/* Header Types */
+	HBH		= 0,	//?
+	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 flgs and scop
+
+	well_known_flg				= 0,
+	transient_flg				= 1,
+
+	node_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 unreach codes
+	icmp6_no_route				= 0,
+	icmp6_ad_prohib				= 1,
+	icmp6_unassigned			= 2,
+	icmp6_adr_unreach			= 3,
+	icmp6_port_unreach			= 4,
+	icmp6_unkn_code				= 5,
+
+	// 	various flags & constants
+
+	v6MINTU      				= 1280,	
+	HOP_LIMIT    				= 255,
+	ETHERHDR_LEN 				= 14,
+	IPV6HDR_LEN  				= 40,
+	IPV4HDR_LEN  				= 20,
+
+	// 	option types
+
+	SRC_LLADDRESS    			= 1,
+	TARGET_LLADDRESS 			= 2,
+	PREFIX_INFO      			= 3,
+	REDIR_HEADER     			= 4,
+	MTU_OPTION       			= 5,
+
+	SRC_UNSPEC  				= 0,
+	SRC_UNI     				= 1, 
+	TARG_UNI    				= 2,
+	TARG_MULTI  				= 3,
+
+	t_unitent   				= 1,
+	t_uniproxy  				= 2,
+	t_unirany   				= 3,
+
+	//	Router constants (all times in milliseconds)
+
+	MAX_INITIAL_RTR_ADVERT_INTERVAL 	= 16000,
+	MAX_INITIAL_RTR_ADVERTISEMENTS  	= 3, 
+	MAX_FINAL_RTR_ADVERTISEMENTS    	= 3,
+	MIN_DELAY_BETWEEN_RAS 			= 3000,
+	MAX_RA_DELAY_TIME     			= 500,
+
+	//	Host constants
+
+	MAX_RTR_SOLICITATION_DELAY 		= 1000,
+	RTR_SOLICITATION_INTERVAL  		= 4000,
+	MAX_RTR_SOLICITATIONS      		= 3,
+
+	//	Node constants
+
+	MAX_MULTICAST_SOLICIT   		= 3,
+	MAX_UNICAST_SOLICIT     		= 3,
+	MAX_ANYCAST_DELAY_TIME  		= 1000,
+	MAX_NEIGHBOR_ADVERTISEMENT 		= 3,	
+	REACHABLE_TIME 				= 30000,
+	RETRANS_TIMER  				= 1000,	
+	DELAY_FIRST_PROBE_TIME 			= 5000,
+
+};
+
+extern void ipv62smcast(uchar *, uchar *);
+extern void icmpns(Fs *f, uchar* src, int suni, uchar* targ, int tuni, uchar* mac);
+extern void icmpna(Fs *f, uchar* src, uchar* dst, uchar* targ, uchar* mac, uchar flags);
+extern void icmpttlexceeded6(Fs *f, Ipifc *ifc, Block *bp);
+extern void icmppkttoobig6(Fs *f, Ipifc *ifc, Block *bp);
+extern void icmphostunr(Fs *f, Ipifc *ifc, Block *bp, int code, int free);
+
+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 v6allroutersS[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 v6sitelocal[IPaddrlen];
+extern uchar v6sitelocalmask[IPaddrlen];
+extern uchar v6glunicast[IPaddrlen];
+extern uchar v6multicast[IPaddrlen];
+extern uchar v6multicastmask[IPaddrlen];
+
+extern int v6llpreflen;
+extern int v6slpreflen;
+extern int v6lbpreflen;
+extern int v6mcpreflen;
+extern int v6snpreflen;
+extern int v6aNpreflen;
+extern int v6aLpreflen;
+
+extern int ReTransTimer;