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-rw-r--r--include/linux/ipv6.h327
1 files changed, 327 insertions, 0 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
new file mode 100644
index 000000000..82806c60a
--- /dev/null
+++ b/include/linux/ipv6.h
@@ -0,0 +1,327 @@
+#ifndef _IPV6_H
+#define _IPV6_H
+
+#include <uapi/linux/ipv6.h>
+
+#define ipv6_optlen(p) (((p)->hdrlen+1) << 3)
+#define ipv6_authlen(p) (((p)->hdrlen+2) << 2)
+/*
+ * 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;
+ __s32 mldv1_unsolicited_report_interval;
+ __s32 mldv2_unsolicited_report_interval;
+ __s32 use_tempaddr;
+ __s32 temp_valid_lft;
+ __s32 temp_prefered_lft;
+ __s32 regen_max_retry;
+ __s32 max_desync_factor;
+ __s32 max_addresses;
+ __s32 accept_ra_defrtr;
+ __s32 accept_ra_pinfo;
+#ifdef CONFIG_IPV6_ROUTER_PREF
+ __s32 accept_ra_rtr_pref;
+ __s32 rtr_probe_interval;
+#ifdef CONFIG_IPV6_ROUTE_INFO
+ __s32 accept_ra_rt_info_max_plen;
+#endif
+#endif
+ __s32 proxy_ndp;
+ __s32 accept_source_route;
+ __s32 accept_ra_from_local;
+#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
+ __s32 optimistic_dad;
+ __s32 use_optimistic;
+#endif
+#ifdef CONFIG_IPV6_MROUTE
+ __s32 mc_forwarding;
+#endif
+ __s32 disable_ipv6;
+ __s32 accept_dad;
+ __s32 force_tllao;
+ __s32 ndisc_notify;
+ __s32 suppress_frag_ndisc;
+ __s32 accept_ra_mtu;
+ struct ipv6_stable_secret {
+ bool initialized;
+ struct in6_addr secret;
+ } stable_secret;
+ void *sysctl;
+};
+
+struct ipv6_params {
+ __s32 disable_ipv6;
+ __s32 autoconf;
+};
+extern struct ipv6_params ipv6_defaults;
+#include <linux/icmpv6.h>
+#include <linux/tcp.h>
+#include <linux/udp.h>
+
+#include <net/inet_sock.h>
+
+static inline struct ipv6hdr *ipv6_hdr(const struct sk_buff *skb)
+{
+ return (struct ipv6hdr *)skb_network_header(skb);
+}
+
+static inline struct ipv6hdr *inner_ipv6_hdr(const struct sk_buff *skb)
+{
+ return (struct ipv6hdr *)skb_inner_network_header(skb);
+}
+
+static inline struct ipv6hdr *ipipv6_hdr(const struct sk_buff *skb)
+{
+ return (struct ipv6hdr *)skb_transport_header(skb);
+}
+
+/*
+ This structure contains results of exthdrs parsing
+ as offsets from skb->nh.
+ */
+
+struct inet6_skb_parm {
+ int iif;
+ __be16 ra;
+ __u16 hop;
+ __u16 dst0;
+ __u16 srcrt;
+ __u16 dst1;
+ __u16 lastopt;
+ __u16 nhoff;
+ __u16 flags;
+#if defined(CONFIG_IPV6_MIP6) || defined(CONFIG_IPV6_MIP6_MODULE)
+ __u16 dsthao;
+#endif
+ __u16 frag_max_size;
+
+#define IP6SKB_XFRM_TRANSFORMED 1
+#define IP6SKB_FORWARDED 2
+#define IP6SKB_REROUTED 4
+#define IP6SKB_ROUTERALERT 8
+#define IP6SKB_FRAGMENTED 16
+};
+
+#define IP6CB(skb) ((struct inet6_skb_parm*)((skb)->cb))
+#define IP6CBMTU(skb) ((struct ip6_mtuinfo *)((skb)->cb))
+
+static inline int inet6_iif(const struct sk_buff *skb)
+{
+ return IP6CB(skb)->iif;
+}
+
+struct tcp6_request_sock {
+ struct tcp_request_sock tcp6rsk_tcp;
+};
+
+struct ipv6_mc_socklist;
+struct ipv6_ac_socklist;
+struct ipv6_fl_socklist;
+
+struct inet6_cork {
+ struct ipv6_txoptions *opt;
+ u8 hop_limit;
+ u8 tclass;
+};
+
+/**
+ * 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_pktinfo sticky_pktinfo;
+ const struct in6_addr *daddr_cache;
+#ifdef CONFIG_IPV6_SUBTREES
+ const struct in6_addr *saddr_cache;
+#endif
+
+ __be32 flow_label;
+ __u32 frag_size;
+
+ /*
+ * Packed in 16bits.
+ * Omit one shift by by putting the signed field at MSB.
+ */
+#if defined(__BIG_ENDIAN_BITFIELD)
+ __s16 hop_limit:9;
+ __u16 __unused_1:7;
+#else
+ __u16 __unused_1:7;
+ __s16 hop_limit:9;
+#endif
+
+#if defined(__BIG_ENDIAN_BITFIELD)
+ /* Packed in 16bits. */
+ __s16 mcast_hops:9;
+ __u16 __unused_2:6,
+ mc_loop:1;
+#else
+ __u16 mc_loop:1,
+ __unused_2:6;
+ __s16 mcast_hops:9;
+#endif
+ int ucast_oif;
+ int mcast_oif;
+
+ /* pktoption flags */
+ union {
+ struct {
+ __u16 srcrt:1,
+ osrcrt:1,
+ rxinfo:1,
+ rxoinfo:1,
+ rxhlim:1,
+ rxohlim:1,
+ hopopts:1,
+ ohopopts:1,
+ dstopts:1,
+ odstopts:1,
+ rxflow:1,
+ rxtclass:1,
+ rxpmtu:1,
+ rxorigdstaddr:1;
+ /* 2 bits hole */
+ } bits;
+ __u16 all;
+ } rxopt;
+
+ /* sockopt flags */
+ __u16 recverr:1,
+ sndflow:1,
+ repflow:1,
+ pmtudisc:3,
+ padding:1, /* 1 bit hole */
+ srcprefs:3, /* 001: prefer temporary address
+ * 010: prefer public address
+ * 100: prefer care-of address
+ */
+ dontfrag:1,
+ autoflowlabel:1;
+ __u8 min_hopcount;
+ __u8 tclass;
+ __be32 rcv_flowinfo;
+
+ __u32 dst_cookie;
+ __u32 rx_dst_cookie;
+
+ struct ipv6_mc_socklist __rcu *ipv6_mc_list;
+ struct ipv6_ac_socklist *ipv6_ac_list;
+ struct ipv6_fl_socklist __rcu *ipv6_fl_list;
+
+ struct ipv6_txoptions *opt;
+ struct sk_buff *pktoptions;
+ struct sk_buff *rxpmtu;
+ struct inet6_cork 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;
+ __u32 ip6mr_table;
+ /* 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;
+};
+
+extern int inet6_sk_rebuild_header(struct sock *sk);
+
+struct tcp6_timewait_sock {
+ struct tcp_timewait_sock tcp6tw_tcp;
+};
+
+#if IS_ENABLED(CONFIG_IPV6)
+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) (sk->sk_ipv6only)
+#define ipv6_only_sock(sk) (__ipv6_only_sock(sk))
+#define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \
+ inet6_sk(sk)->rxopt.bits.rxinfo)
+
+static inline const struct in6_addr *inet6_rcv_saddr(const struct sock *sk)
+{
+ if (sk->sk_family == AF_INET6)
+ return &sk->sk_v6_rcv_saddr;
+ return NULL;
+}
+
+static inline int inet_v6_ipv6only(const struct sock *sk)
+{
+ /* ipv6only field is at same position for timewait and other sockets */
+ return ipv6_only_sock(sk);
+}
+#else
+#define __ipv6_only_sock(sk) 0
+#define ipv6_only_sock(sk) 0
+#define ipv6_sk_rxinfo(sk) 0
+
+static inline struct ipv6_pinfo * inet6_sk(const struct sock *__sk)
+{
+ return NULL;
+}
+
+static inline struct inet6_request_sock *
+ inet6_rsk(const struct request_sock *rsk)
+{
+ return NULL;
+}
+
+static inline struct raw6_sock *raw6_sk(const struct sock *sk)
+{
+ return NULL;
+}
+
+#define inet6_rcv_saddr(__sk) NULL
+#define tcp_twsk_ipv6only(__sk) 0
+#define inet_v6_ipv6only(__sk) 0
+#endif /* IS_ENABLED(CONFIG_IPV6) */
+#endif /* _IPV6_H */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-19 12:19:12 +0000