1 #ifndef __NET_IPV6_WRAPPER_H
2 #define __NET_IPV6_WRAPPER_H 1
4 #include <linux/version.h>
6 #include_next <net/ipv6.h>
9 #define NEXTHDR_SCTP 132 /* Stream Control Transport Protocol */
12 #ifndef HAVE_IP6_FH_F_SKIP_RH
15 IP6_FH_F_FRAG = (1 << 0),
16 IP6_FH_F_AUTH = (1 << 1),
17 IP6_FH_F_SKIP_RH = (1 << 2),
20 /* This function is upstream, but not the version which skips routing
21 * headers with 0 segments_left. We fixed it when we introduced
24 #define ipv6_find_hdr rpl_ipv6_find_hdr
25 extern int rpl_ipv6_find_hdr(const struct sk_buff *skb, unsigned int *offset,
26 int target, unsigned short *fragoff, int *fragflg);
29 #if LINUX_VERSION_CODE < KERNEL_VERSION(3,6,0)
30 static inline u32 ipv6_addr_hash(const struct in6_addr *a)
32 #if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
33 const unsigned long *ul = (const unsigned long *)a;
34 unsigned long x = ul[0] ^ ul[1];
36 return (u32)(x ^ (x >> 32));
38 return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^
39 a->s6_addr32[2] ^ a->s6_addr32[3]);
44 #ifndef HAVE___IPV6_ADDR_JHASH
45 static inline u32 __ipv6_addr_jhash(const struct in6_addr *a, const u32 unused)
47 return ipv6_addr_jhash(a);
51 #define ip6_flowlabel rpl_ip6_flowlabel
52 static inline __be32 ip6_flowlabel(const struct ipv6hdr *hdr)
54 return *(__be32 *)hdr & IPV6_FLOWLABEL_MASK;
57 #ifndef IPV6_TCLASS_SHIFT
58 #define IPV6_TCLASS_MASK (IPV6_FLOWINFO_MASK & ~IPV6_FLOWLABEL_MASK)
59 #define IPV6_TCLASS_SHIFT 20
62 #define ip6_tclass rpl_ip6_tclass
63 static inline u8 ip6_tclass(__be32 flowinfo)
65 return ntohl(flowinfo & IPV6_TCLASS_MASK) >> IPV6_TCLASS_SHIFT;
68 #define ip6_make_flowinfo rpl_ip6_make_flowinfo
69 static inline __be32 ip6_make_flowinfo(unsigned int tclass, __be32 flowlabel)
71 return htonl(tclass << IPV6_TCLASS_SHIFT) | flowlabel;