1 files changed, 316 insertions, 0 deletions

diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
new file mode 100644
index 000000000000..ab0d0efbf240
--- /dev/null
+++ b/include/linux/ipv6.h
@@ -0,0 +1,316 @@
+#ifndef _IPV6_H
+#define _IPV6_H
+
+#include <linux/config.h>
+#include <linux/in6.h>
+#include <asm/byteorder.h>
+
+/* The latest drafts declared increase in minimal mtu up to 1280. */
+
+#define IPV6_MIN_MTU    1280
+
+/*
+ *      Advanced API
+ *      source interface/address selection, source routing, etc...
+ *      *under construction*
+ */
+
+
+struct in6_pktinfo {
+        struct in6_addr ipi6_addr;
+        int             ipi6_ifindex;
+};
+
+
+struct in6_ifreq {
+        struct in6_addr ifr6_addr;
+        __u32           ifr6_prefixlen;
+        int             ifr6_ifindex; 
+};
+
+#define IPV6_SRCRT_STRICT       0x01    /* this hop must be a neighbor  */
+#define IPV6_SRCRT_TYPE_0       0       /* IPv6 type 0 Routing Header   */
+
+/*
+ *      routing header
+ */
+struct ipv6_rt_hdr {
+        __u8            nexthdr;
+        __u8            hdrlen;
+        __u8            type;
+        __u8            segments_left;
+
+        /*
+         *      type specific data
+         *      variable length field
+         */
+};
+
+
+struct ipv6_opt_hdr {
+        __u8            nexthdr;
+        __u8            hdrlen;
+        /* 
+         * TLV encoded option data follows.
+         */
+};
+
+#define ipv6_destopt_hdr ipv6_opt_hdr
+#define ipv6_hopopt_hdr  ipv6_opt_hdr
+
+#ifdef __KERNEL__
+#define ipv6_optlen(p)  (((p)->hdrlen+1) << 3)
+#endif
+
+/*
+ *      routing header type 0 (used in cmsghdr struct)
+ */
+
+struct rt0_hdr {
+        struct ipv6_rt_hdr      rt_hdr;
+        __u32                   bitmap;         /* strict/loose bit map */
+        struct in6_addr         addr[0];
+
+#define rt0_type                rt_hdr.type
+};
+
+struct ipv6_auth_hdr {
+        __u8  nexthdr;
+        __u8  hdrlen;           /* This one is measured in 32 bit units! */
+        __u16 reserved;
+        __u32 spi;
+        __u32 seq_no;           /* Sequence number */
+        __u8  auth_data[0];     /* Length variable but >=4. Mind the 64 bit alignment! */
+};
+
+struct ipv6_esp_hdr {
+        __u32 spi;
+        __u32 seq_no;           /* Sequence number */
+        __u8  enc_data[0];      /* Length variable but >=8. Mind the 64 bit alignment! */
+};
+
+struct ipv6_comp_hdr {
+        __u8 nexthdr;
+        __u8 flags;
+        __u16 cpi;
+};
+
+/*
+ *      IPv6 fixed header
+ *
+ *      BEWARE, it is incorrect. The first 4 bits of flow_lbl
+ *      are glued to priority now, forming "class".
+ */
+
+struct ipv6hdr {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+        __u8                    priority:4,
+                                version:4;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+        __u8                    version:4,
+                                priority:4;
+#else
+#error  "Please fix <asm/byteorder.h>"
+#endif
+        __u8                    flow_lbl[3];
+
+        __u16                   payload_len;
+        __u8                    nexthdr;
+        __u8                    hop_limit;
+
+        struct  in6_addr        saddr;
+        struct  in6_addr        daddr;
+};
+
+/*
+ * This structure contains configuration options per IPv6 link.
+ */
+struct ipv6_devconf {
+        __s32           forwarding;
+        __s32           hop_limit;
+        __s32           mtu6;
+        __s32           accept_ra;
+        __s32           accept_redirects;
+        __s32           autoconf;
+        __s32           dad_transmits;
+        __s32           rtr_solicits;
+        __s32           rtr_solicit_interval;
+        __s32           rtr_solicit_delay;
+        __s32           force_mld_version;
+#ifdef CONFIG_IPV6_PRIVACY
+        __s32           use_tempaddr;
+        __s32           temp_valid_lft;
+        __s32           temp_prefered_lft;
+        __s32           regen_max_retry;
+        __s32           max_desync_factor;
+#endif
+        __s32           max_addresses;
+        void            *sysctl;
+};
+
+/* index values for the variables in ipv6_devconf */
+enum {
+        DEVCONF_FORWARDING = 0,
+        DEVCONF_HOPLIMIT,
+        DEVCONF_MTU6,
+        DEVCONF_ACCEPT_RA,
+        DEVCONF_ACCEPT_REDIRECTS,
+        DEVCONF_AUTOCONF,
+        DEVCONF_DAD_TRANSMITS,
+        DEVCONF_RTR_SOLICITS,
+        DEVCONF_RTR_SOLICIT_INTERVAL,
+        DEVCONF_RTR_SOLICIT_DELAY,
+        DEVCONF_USE_TEMPADDR,
+        DEVCONF_TEMP_VALID_LFT,
+        DEVCONF_TEMP_PREFERED_LFT,
+        DEVCONF_REGEN_MAX_RETRY,
+        DEVCONF_MAX_DESYNC_FACTOR,
+        DEVCONF_MAX_ADDRESSES,
+        DEVCONF_FORCE_MLD_VERSION,
+        DEVCONF_MAX
+};
+
+#ifdef __KERNEL__
+#include <linux/in6.h>          /* struct sockaddr_in6 */
+#include <linux/icmpv6.h>
+#include <net/if_inet6.h>       /* struct ipv6_mc_socklist */
+#include <linux/tcp.h>
+#include <linux/udp.h>
+
+/* 
+   This structure contains results of exthdrs parsing
+   as offsets from skb->nh.
+ */
+
+struct inet6_skb_parm {
+        int                     iif;
+        __u16                   ra;
+        __u16                   hop;
+        __u16                   dst0;
+        __u16                   srcrt;
+        __u16                   dst1;
+};
+
+#define IP6CB(skb)      ((struct inet6_skb_parm*)((skb)->cb))
+
+/**
+ * struct ipv6_pinfo - ipv6 private area
+ *
+ * In the struct sock hierarchy (tcp6_sock, upd6_sock, etc)
+ * this _must_ be the last member, so that inet6_sk_generic
+ * is able to calculate its offset from the base struct sock
+ * by using the struct proto->slab_obj_size member. -acme
+ */
+struct ipv6_pinfo {
+        struct in6_addr         saddr;
+        struct in6_addr         rcv_saddr;
+        struct in6_addr         daddr;
+        struct in6_addr         *daddr_cache;
+
+        __u32                   flow_label;
+        __u32                   frag_size;
+        __s16                   hop_limit;
+        __s16                   mcast_hops;
+        int                     mcast_oif;
+
+        /* pktoption flags */
+        union {
+                struct {
+                        __u8    srcrt:2,
+                                rxinfo:1,
+                                rxhlim:1,
+                                hopopts:1,
+                                dstopts:1,
+                                rxflow:1;
+                } bits;
+                __u8            all;
+        } rxopt;
+
+        /* sockopt flags */
+        __u8                    mc_loop:1,
+                                recverr:1,
+                                sndflow:1,
+                                pmtudisc:2,
+                                ipv6only:1;
+
+        __u32                   dst_cookie;
+
+        struct ipv6_mc_socklist *ipv6_mc_list;
+        struct ipv6_ac_socklist *ipv6_ac_list;
+        struct ipv6_fl_socklist *ipv6_fl_list;
+
+        struct ipv6_txoptions   *opt;
+        struct sk_buff          *pktoptions;
+        struct {
+                struct ipv6_txoptions *opt;
+                struct rt6_info *rt;
+                int hop_limit;
+        } cork;
+};
+
+/* WARNING: don't change the layout of the members in {raw,udp,tcp}6_sock! */
+struct raw6_sock {
+        /* inet_sock has to be the first member of raw6_sock */
+        struct inet_sock        inet;
+        __u32                   checksum;       /* perform checksum */
+        __u32                   offset;         /* checksum offset  */
+        struct icmp6_filter     filter;
+        /* ipv6_pinfo has to be the last member of raw6_sock, see inet6_sk_generic */
+        struct ipv6_pinfo       inet6;
+};
+
+struct udp6_sock {
+        struct udp_sock   udp;
+        /* ipv6_pinfo has to be the last member of udp6_sock, see inet6_sk_generic */
+        struct ipv6_pinfo inet6;
+};
+
+struct tcp6_sock {
+        struct tcp_sock   tcp;
+        /* ipv6_pinfo has to be the last member of tcp6_sock, see inet6_sk_generic */
+        struct ipv6_pinfo inet6;
+};
+
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
+{
+        return inet_sk(__sk)->pinet6;
+}
+
+static inline struct raw6_sock *raw6_sk(const struct sock *sk)
+{
+        return (struct raw6_sock *)sk;
+}
+
+static inline void inet_sk_copy_descendant(struct sock *sk_to,
+                                           const struct sock *sk_from)
+{
+        int ancestor_size = sizeof(struct inet_sock);
+
+        if (sk_from->sk_family == PF_INET6)
+                ancestor_size += sizeof(struct ipv6_pinfo);
+
+        __inet_sk_copy_descendant(sk_to, sk_from, ancestor_size);
+}
+
+#define __ipv6_only_sock(sk)    (inet6_sk(sk)->ipv6only)
+#define ipv6_only_sock(sk)      ((sk)->sk_family == PF_INET6 && __ipv6_only_sock(sk))
+#else
+#define __ipv6_only_sock(sk)    0
+#define ipv6_only_sock(sk)      0
+
+static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
+{
+        return NULL;
+}
+
+static inline struct raw6_sock *raw6_sk(const struct sock *sk)
+{
+        return NULL;
+}
+
+#endif
+
+#endif
+
+#endif