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Add const qualifier to in6_addrhash() function.

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Add in6ifa_ifwithaddr() function. It is similar to ifa_ifwithaddr,
but does fast lookup in the hash of inet6 addresses.

Obtained from:	Yandex LLC
Sponsored by:	Yandex LLC
This commit is contained in:
Andrey V. Elsukov 2014-09-11 13:18:41 +00:00
parent 80803aa289
commit 343e440f63
2 changed files with 25 additions and 1 deletions
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23
sys/netinet6/in6.c
View File

@ -1714,6 +1714,29 @@ in6ifa_ifpforlinklocal(struct ifnet *ifp, int ignoreflags)
}
/*
* find the internet address corresponding to a given address.
* ifaddr is returned referenced.
*/
struct in6_ifaddr *
in6ifa_ifwithaddr(const struct in6_addr *addr, uint32_t zoneid)
{
struct in6_ifaddr *ia;
IN6_IFADDR_RLOCK();
LIST_FOREACH(ia, IN6ADDR_HASH(addr), ia6_hash) {
if (IN6_ARE_ADDR_EQUAL(IA6_IN6(ia), addr)) {
if (zoneid != 0 &&
zoneid != ia->ia_addr.sin6_scope_id)
continue;
ifa_ref(&ia->ia_ifa);
break;
}
}
IN6_IFADDR_RUNLOCK();
return (ia);
}
/*
* find the internet address corresponding to a given interface and address.
* ifaddr is returned referenced.

3
sys/netinet6/in6_var.h
View File

@ -526,7 +526,7 @@ VNET_DECLARE(u_long, in6_ifaddrhmask);
(&V_in6_ifaddrhashtbl[IN6ADDR_HASHVAL(x) & V_in6_ifaddrhmask])
static __inline uint32_t
in6_addrhash(struct in6_addr *in6)
in6_addrhash(const struct in6_addr *in6)
{
uint32_t x;
@ -812,6 +812,7 @@ void in6_setmaxmtu(void);
int in6_if2idlen(struct ifnet *);
struct in6_ifaddr *in6ifa_ifpforlinklocal(struct ifnet *, int);
struct in6_ifaddr *in6ifa_ifpwithaddr(struct ifnet *, struct in6_addr *);
struct in6_ifaddr *in6ifa_ifwithaddr(const struct in6_addr *, uint32_t);
struct in6_ifaddr *in6ifa_llaonifp(struct ifnet *);
char *ip6_sprintf(char *, const struct in6_addr *);
int in6_addr2zoneid(struct ifnet *, struct in6_addr *, u_int32_t *);