diff options
Diffstat (limited to 'include/net/inet6_hashtables.h')
| -rw-r--r-- | include/net/inet6_hashtables.h | 86 |
1 files changed, 46 insertions, 40 deletions
diff --git a/include/net/inet6_hashtables.h b/include/net/inet6_hashtables.h index 62a5b691858..ae061354430 100644 --- a/include/net/inet6_hashtables.h +++ b/include/net/inet6_hashtables.h @@ -15,7 +15,7 @@ #define _INET6_HASHTABLES_H -#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) +#if IS_ENABLED(CONFIG_IPV6) #include <linux/in6.h> #include <linux/ipv6.h> #include <linux/types.h> @@ -24,32 +24,21 @@ #include <net/inet_sock.h> #include <net/ipv6.h> +#include <net/netns/hash.h> struct inet_hashinfo; -/* I have no idea if this is a good hash for v6 or not. -DaveM */ -static inline unsigned int inet6_ehashfn(const struct in6_addr *laddr, const u16 lport, - const struct in6_addr *faddr, const __be16 fport) +static inline unsigned int __inet6_ehashfn(const u32 lhash, + const u16 lport, + const u32 fhash, + const __be16 fport, + const u32 initval) { - u32 ports = (lport ^ (__force u16)fport); - - return jhash_3words((__force u32)laddr->s6_addr32[3], - (__force u32)faddr->s6_addr32[3], - ports, inet_ehash_secret); -} - -static inline int inet6_sk_ehashfn(const struct sock *sk) -{ - const struct inet_sock *inet = inet_sk(sk); - const struct ipv6_pinfo *np = inet6_sk(sk); - const struct in6_addr *laddr = &np->rcv_saddr; - const struct in6_addr *faddr = &np->daddr; - const __u16 lport = inet->num; - const __be16 fport = inet->dport; - return inet6_ehashfn(laddr, lport, faddr, fport); + const u32 ports = (((u32)lport) << 16) | (__force u32)fport; + return jhash_3words(lhash, fhash, ports, initval); } -extern void __inet6_hash(struct sock *sk); +int __inet6_hash(struct sock *sk, struct inet_timewait_sock *twp); /* * Sockets in TCP_CLOSE state are _always_ taken out of the hash, so @@ -57,19 +46,19 @@ extern void __inet6_hash(struct sock *sk); * * The sockhash lock must be held as a reader here. */ -extern struct sock *__inet6_lookup_established(struct net *net, - struct inet_hashinfo *hashinfo, - const struct in6_addr *saddr, - const __be16 sport, - const struct in6_addr *daddr, - const u16 hnum, - const int dif); - -extern struct sock *inet6_lookup_listener(struct net *net, - struct inet_hashinfo *hashinfo, - const struct in6_addr *daddr, - const unsigned short hnum, - const int dif); +struct sock *__inet6_lookup_established(struct net *net, + struct inet_hashinfo *hashinfo, + const struct in6_addr *saddr, + const __be16 sport, + const struct in6_addr *daddr, + const u16 hnum, const int dif); + +struct sock *inet6_lookup_listener(struct net *net, + struct inet_hashinfo *hashinfo, + const struct in6_addr *saddr, + const __be16 sport, + const struct in6_addr *daddr, + const unsigned short hnum, const int dif); static inline struct sock *__inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo, @@ -84,12 +73,29 @@ static inline struct sock *__inet6_lookup(struct net *net, if (sk) return sk; - return inet6_lookup_listener(net, hashinfo, daddr, hnum, dif); + return inet6_lookup_listener(net, hashinfo, saddr, sport, + daddr, hnum, dif); +} + +static inline struct sock *__inet6_lookup_skb(struct inet_hashinfo *hashinfo, + struct sk_buff *skb, + const __be16 sport, + const __be16 dport) +{ + struct sock *sk = skb_steal_sock(skb); + + if (sk) + return sk; + + return __inet6_lookup(dev_net(skb_dst(skb)->dev), hashinfo, + &ipv6_hdr(skb)->saddr, sport, + &ipv6_hdr(skb)->daddr, ntohs(dport), + inet6_iif(skb)); } -extern struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo, - const struct in6_addr *saddr, const __be16 sport, - const struct in6_addr *daddr, const __be16 dport, - const int dif); -#endif /* defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) */ +struct sock *inet6_lookup(struct net *net, struct inet_hashinfo *hashinfo, + const struct in6_addr *saddr, const __be16 sport, + const struct in6_addr *daddr, const __be16 dport, + const int dif); +#endif /* IS_ENABLED(CONFIG_IPV6) */ #endif /* _INET6_HASHTABLES_H */ |