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git.proxmox.com Git - ovs.git/blob - datapath/linux/compat/include/net/ipv6.h
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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
;