Commit | Line | Data |
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505cbfc5 ACM |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Authors: Lotsa people, from code originally in tcp | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #ifndef _INET6_HASHTABLES_H | |
15 | #define _INET6_HASHTABLES_H | |
16 | ||
5324a040 | 17 | |
dfd56b8b | 18 | #if IS_ENABLED(CONFIG_IPV6) |
5324a040 ACM |
19 | #include <linux/in6.h> |
20 | #include <linux/ipv6.h> | |
505cbfc5 | 21 | #include <linux/types.h> |
b3da2cf3 DM |
22 | #include <linux/jhash.h> |
23 | ||
24 | #include <net/inet_sock.h> | |
505cbfc5 | 25 | |
5324a040 | 26 | #include <net/ipv6.h> |
0b441916 | 27 | #include <net/netns/hash.h> |
5324a040 | 28 | |
505cbfc5 ACM |
29 | struct inet_hashinfo; |
30 | ||
b50026b5 HFS |
31 | static inline unsigned int __inet6_ehashfn(const u32 lhash, |
32 | const u16 lport, | |
33 | const u32 fhash, | |
34 | const __be16 fport, | |
35 | const u32 initval) | |
5324a040 | 36 | { |
b50026b5 HFS |
37 | const u32 ports = (((u32)lport) << 16) | (__force u32)fport; |
38 | return jhash_3words(lhash, fhash, ports, initval); | |
5324a040 ACM |
39 | } |
40 | ||
1fd51155 | 41 | int __inet6_hash(struct sock *sk, struct inet_timewait_sock *twp); |
90b19d31 | 42 | |
5324a040 ACM |
43 | /* |
44 | * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so | |
45 | * we need not check it for TCP lookups anymore, thanks Alexey. -DaveM | |
46 | * | |
47 | * The sockhash lock must be held as a reader here. | |
48 | */ | |
1fd51155 JP |
49 | struct sock *__inet6_lookup_established(struct net *net, |
50 | struct inet_hashinfo *hashinfo, | |
51 | const struct in6_addr *saddr, | |
52 | const __be16 sport, | |
53 | const struct in6_addr *daddr, | |
54 | const u16 hnum, const int dif); | |
55 | ||
56 | struct sock *inet6_lookup_listener(struct net *net, | |
57 | struct inet_hashinfo *hashinfo, | |
58 | const struct in6_addr *saddr, | |
59 | const __be16 sport, | |
60 | const struct in6_addr *daddr, | |
61 | const unsigned short hnum, const int dif); | |
5324a040 | 62 | |
d86e0dac PE |
63 | static inline struct sock *__inet6_lookup(struct net *net, |
64 | struct inet_hashinfo *hashinfo, | |
5324a040 | 65 | const struct in6_addr *saddr, |
d2ecd9cc | 66 | const __be16 sport, |
5324a040 ACM |
67 | const struct in6_addr *daddr, |
68 | const u16 hnum, | |
69 | const int dif) | |
70 | { | |
d86e0dac PE |
71 | struct sock *sk = __inet6_lookup_established(net, hashinfo, saddr, |
72 | sport, daddr, hnum, dif); | |
5324a040 ACM |
73 | if (sk) |
74 | return sk; | |
75 | ||
5ba24953 TH |
76 | return inet6_lookup_listener(net, hashinfo, saddr, sport, |
77 | daddr, hnum, dif); | |
5324a040 ACM |
78 | } |
79 | ||
9a1f27c4 ACM |
80 | static inline struct sock *__inet6_lookup_skb(struct inet_hashinfo *hashinfo, |
81 | struct sk_buff *skb, | |
82 | const __be16 sport, | |
83 | const __be16 dport) | |
84 | { | |
c7109986 | 85 | struct sock *sk = skb_steal_sock(skb); |
23542618 | 86 | |
c7109986 | 87 | if (sk) |
23542618 | 88 | return sk; |
c7109986 ED |
89 | |
90 | return __inet6_lookup(dev_net(skb_dst(skb)->dev), hashinfo, | |
91 | &ipv6_hdr(skb)->saddr, sport, | |
92 | &ipv6_hdr(skb)->daddr, ntohs(dport), | |
93 | inet6_iif(skb)); | |
9a1f27c4 ACM |
94 | } |
95 | ||
1fd51155 JP |
96 | struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo, |
97 | const struct in6_addr *saddr, const __be16 sport, | |
98 | const struct in6_addr *daddr, const __be16 dport, | |
99 | const int dif); | |
dfd56b8b | 100 | #endif /* IS_ENABLED(CONFIG_IPV6) */ |
505cbfc5 | 101 | #endif /* _INET6_HASHTABLES_H */ |