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@@ -1,4 +1,4 @@
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-/* Copyright (C) 1991-1997, 2001 Free Software Foundation, Inc.
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+/* Copyright (C) 1991-1997, 2001, 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@@ -47,51 +47,58 @@ struct ip6_hdr
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#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
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#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
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#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
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#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
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+/* Generic extension header. */
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+struct ip6_ext
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+ {
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+ uint8_t ip6e_nxt; /* next header. */
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+ uint8_t ip6e_len; /* length in units of 8 octets. */
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+ };
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+
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/* Hop-by-Hop options header. */
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/* Hop-by-Hop options header. */
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struct ip6_hbh
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struct ip6_hbh
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{
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{
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- uint8_t ip6h_nxt; /* next hesder. */
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+ uint8_t ip6h_nxt; /* next header. */
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- uint8_t ip6h_len; /* length in units of 8 octets. */
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+ uint8_t ip6h_len; /* length in units of 8 octets. */
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/* followed by options */
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/* followed by options */
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};
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};
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/* Destination options header */
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/* Destination options header */
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struct ip6_dest
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struct ip6_dest
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{
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{
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- uint8_t ip6d_nxt; /* next header */
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+ uint8_t ip6d_nxt; /* next header */
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- uint8_t ip6d_len; /* length in units of 8 octets */
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+ uint8_t ip6d_len; /* length in units of 8 octets */
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/* followed by options */
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/* followed by options */
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};
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};
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/* Routing header */
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/* Routing header */
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struct ip6_rthdr
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struct ip6_rthdr
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{
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{
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- uint8_t ip6r_nxt; /* next header */
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+ uint8_t ip6r_nxt; /* next header */
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- uint8_t ip6r_len; /* length in units of 8 octets */
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+ uint8_t ip6r_len; /* length in units of 8 octets */
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- uint8_t ip6r_type; /* routing type */
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+ uint8_t ip6r_type; /* routing type */
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- uint8_t ip6r_segleft; /* segments left */
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+ uint8_t ip6r_segleft; /* segments left */
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/* followed by routing type specific data */
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/* followed by routing type specific data */
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};
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};
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/* Type 0 Routing header */
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/* Type 0 Routing header */
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struct ip6_rthdr0
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struct ip6_rthdr0
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{
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{
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- uint8_t ip6r0_nxt; /* next header */
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+ uint8_t ip6r0_nxt; /* next header */
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- uint8_t ip6r0_len; /* length in units of 8 octets */
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+ uint8_t ip6r0_len; /* length in units of 8 octets */
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- uint8_t ip6r0_type; /* always zero */
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+ uint8_t ip6r0_type; /* always zero */
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- uint8_t ip6r0_segleft; /* segments left */
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+ uint8_t ip6r0_segleft; /* segments left */
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- uint8_t ip6r0_reserved; /* reserved field */
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+ uint8_t ip6r0_reserved; /* reserved field */
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- uint8_t ip6r0_slmap[3]; /* strict/loose bit map */
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+ uint8_t ip6r0_slmap[3]; /* strict/loose bit map */
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struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */
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struct in6_addr ip6r0_addr[1]; /* up to 23 addresses */
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};
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};
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/* Fragment header */
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/* Fragment header */
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struct ip6_frag
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struct ip6_frag
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{
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{
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- uint8_t ip6f_nxt; /* next header */
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+ uint8_t ip6f_nxt; /* next header */
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- uint8_t ip6f_reserved; /* reserved field */
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+ uint8_t ip6f_reserved; /* reserved field */
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- uint16_t ip6f_offlg; /* offset, reserved, and flag */
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+ uint16_t ip6f_offlg; /* offset, reserved, and flag */
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- uint32_t ip6f_ident; /* identification */
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+ uint32_t ip6f_ident; /* identification */
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};
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};
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#if BYTE_ORDER == BIG_ENDIAN
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#if BYTE_ORDER == BIG_ENDIAN
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@@ -104,4 +111,78 @@ struct ip6_frag
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#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
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#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
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#endif
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#endif
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+/* IPv6 options */
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+struct ip6_opt
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+ {
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+ uint8_t ip6o_type;
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+ uint8_t ip6o_len;
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+ };
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+
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+/* The high-order 3 bits of the option type define the behavior
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+ * when processing an unknown option and whether or not the option
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+ * content changes in flight.
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+ */
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+#define IP6OPT_TYPE(o) ((o) & 0xc0)
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+#define IP6OPT_TYPE_SKIP 0x00
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+#define IP6OPT_TYPE_DISCARD 0x40
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+#define IP6OPT_TYPE_FORCEICMP 0x80
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+#define IP6OPT_TYPE_ICMP 0xc0
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+#define IP6OPT_TYPE_MUTABLE 0x20
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+
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+/* Special option types for padding. */
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+#define IP6OPT_PAD1 0
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+#define IP6OPT_PADN 1
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+
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+#define IP6OPT_JUMBO 0xc2
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+#define IP6OPT_NSAP_ADDR 0xc3
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+#define IP6OPT_TUNNEL_LIMIT 0x04
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+#define IP6OPT_ROUTER_ALERT 0x05
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+
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+/* Jumbo Payload Option */
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+struct ip6_opt_jumbo
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+ {
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+ uint8_t ip6oj_type;
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+ uint8_t ip6oj_len;
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+ uint8_t ip6oj_jumbo_len[4];
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+ };
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+#define IP6OPT_JUMBO_LEN 6
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+
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+/* NSAP Address Option */
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+struct ip6_opt_nsap
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+ {
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+ uint8_t ip6on_type;
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+ uint8_t ip6on_len;
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+ uint8_t ip6on_src_nsap_len;
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+ uint8_t ip6on_dst_nsap_len;
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+ /* followed by source NSAP */
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+ /* followed by destination NSAP */
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+ };
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+
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+/* Tunnel Limit Option */
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+struct ip6_opt_tunnel
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+ {
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+ uint8_t ip6ot_type;
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+ uint8_t ip6ot_len;
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+ uint8_t ip6ot_encap_limit;
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+ };
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+
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+/* Router Alert Option */
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+struct ip6_opt_router
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+ {
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+ uint8_t ip6or_type;
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+ uint8_t ip6or_len;
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+ uint8_t ip6or_value[2];
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+ };
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+
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+/* Router alert values (in network byte order) */
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+#if BYTE_ORDER == BIG_ENDIAN
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+# define IP6_ALERT_MLD 0x0000
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+# define IP6_ALERT_RSVP 0x0001
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+# define IP6_ALERT_AN 0x0002
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+#else /* BYTE_ORDER == LITTLE_ENDING */
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+# define IP6_ALERT_MLD 0x0000
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+# define IP6_ALERT_RSVP 0x0100
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+# define IP6_ALERT_AN 0x0200
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+#endif
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+
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#endif /* netinet/ip6.h */
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#endif /* netinet/ip6.h */
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