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Add in_localip_fib(), in6_localip_fib().

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Check if given address/FIB exists locally.

Reviewed by:		melifaro
Differential revision:	https://reviews.freebsd.org/D32913
This commit is contained in:
Gleb Smirnoff 2021-11-12 08:59:42 -08:00
parent 81674f121e
commit 9c89392f12
4 changed files with 41 additions and 0 deletions
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18
sys/netinet/in.c
View file

@ -137,6 +137,24 @@ in_localip(struct in_addr in)
return (false);
}
/*
* Like in_localip(), but FIB-aware.
*/
bool
in_localip_fib(struct in_addr in, uint16_t fib)
{
struct in_ifaddr *ia;
NET_EPOCH_ASSERT();
CK_LIST_FOREACH(ia, INADDR_HASH(in.s_addr), ia_hash)
if (IA_SIN(ia)->sin_addr.s_addr == in.s_addr &&
ia->ia_ifa.ifa_ifp->if_fib == fib)
return (true);
return (false);
}
/*
* Return 1 if an internet address is configured on an interface.
*/

1
sys/netinet/in.h
View file

@ -662,6 +662,7 @@ int in_ifaddr_broadcast(struct in_addr, struct in_ifaddr *);
int in_canforward(struct in_addr);
int in_localaddr(struct in_addr);
bool in_localip(struct in_addr);
bool in_localip_fib(struct in_addr, uint16_t);
int in_ifhasaddr(struct ifnet *, struct in_addr);
struct in_ifaddr *in_findlocal(uint32_t, bool);
int inet_aton(const char *, struct in_addr *); /* in libkern */

21
sys/netinet6/in6.c
View file

@ -1753,6 +1753,27 @@ in6_localip(struct in6_addr *in6)
return (0);
}
/*
* Like in6_localip(), but FIB-aware.
*/
bool
in6_localip_fib(struct in6_addr *in6, uint16_t fib)
{
struct rm_priotracker in6_ifa_tracker;
struct in6_ifaddr *ia;
IN6_IFADDR_RLOCK(&in6_ifa_tracker);
CK_LIST_FOREACH(ia, IN6ADDR_HASH(in6), ia6_hash) {
if (IN6_ARE_ADDR_EQUAL(in6, &ia->ia_addr.sin6_addr) &&
ia->ia_ifa.ifa_ifp->if_fib == fib) {
IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);
return (true);
}
}
IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);
return (false);
}
/*
* Return 1 if an internet address is configured on an interface.
*/

1
sys/netinet6/in6.h
View file

@ -674,6 +674,7 @@ int in6_cksum_partial(struct mbuf *, u_int8_t, u_int32_t, u_int32_t,
u_int32_t);
int in6_localaddr(struct in6_addr *);
int in6_localip(struct in6_addr *);
bool in6_localip_fib(struct in6_addr *, uint16_t);
int in6_ifhasaddr(struct ifnet *, struct in6_addr *);
int in6_addrscope(const struct in6_addr *);
char *ip6_sprintf(char *, const struct in6_addr *);