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-rw-r--r--include/linux/ipv6.h316
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
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 01:21:50 +0000