Differential D43504 Diff 136556 sys/netinet6/in6_src.c

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sys/netinet6/in6_src.c

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/*		/*
* Return an IPv6 address, which is the most appropriate for a given		* Return an IPv6 address, which is the most appropriate for a given
* destination and user specified options.		* destination and user specified options.
* If necessary, this function lookups the routing table and returns		* If necessary, this function lookups the routing table and returns
* an entry to the caller for later use.		* an entry to the caller for later use.
*/		*/
#define REPLACE(r) do {\		#define REPLACE(r) do {\
IP6STAT_INC(ip6s_sources_rule[(r)]); \		IP6STAT_INC2(ip6s_sources_rule, (r)); \
/* { \		/* { \
char ip6buf[INET6_ADDRSTRLEN], ip6b[INET6_ADDRSTRLEN]; \		char ip6buf[INET6_ADDRSTRLEN], ip6b[INET6_ADDRSTRLEN]; \
printf("in6_selectsrc: replace %s with %s by %d\n", ia_best ? ip6_sprintf(ip6buf, &ia_best->ia_addr.sin6_addr) : "none", ip6_sprintf(ip6b, &ia->ia_addr.sin6_addr), (r)); \		printf("in6_selectsrc: replace %s with %s by %d\n", ia_best ? ip6_sprintf(ip6buf, &ia_best->ia_addr.sin6_addr) : "none", ip6_sprintf(ip6b, &ia->ia_addr.sin6_addr), (r)); \
} */ \		} */ \
goto replace; \		goto replace; \
} while(0)		} while(0)
#define NEXT(r) do {\		#define NEXT(r) do {\
/* { \		/* { \
char ip6buf[INET6_ADDRSTRLEN], ip6b[INET6_ADDRSTRLEN]; \		char ip6buf[INET6_ADDRSTRLEN], ip6b[INET6_ADDRSTRLEN]; \
printf("in6_selectsrc: keep %s against %s by %d\n", ia_best ? ip6_sprintf(ip6buf, &ia_best->ia_addr.sin6_addr) : "none", ip6_sprintf(ip6b, &ia->ia_addr.sin6_addr), (r)); \		printf("in6_selectsrc: keep %s against %s by %d\n", ia_best ? ip6_sprintf(ip6buf, &ia_best->ia_addr.sin6_addr) : "none", ip6_sprintf(ip6b, &ia->ia_addr.sin6_addr), (r)); \
} */ \		} */ \
goto next; /* XXX: we can't use 'continue' here */ \		goto next; /* XXX: we can't use 'continue' here */ \
} while(0)		} while(0)
#define BREAK(r) do { \		#define BREAK(r) do { \
IP6STAT_INC(ip6s_sources_rule[(r)]); \		IP6STAT_INC2(ip6s_sources_rule, (r)); \
goto out; /* XXX: we can't use 'break' here */ \		goto out; /* XXX: we can't use 'break' here */ \
} while(0)		} while(0)

static int		static int
in6_selectsrc(uint32_t fibnum, struct sockaddr_in6 *dstsock,		in6_selectsrc(uint32_t fibnum, struct sockaddr_in6 *dstsock,
struct ip6_pktopts opts, struct inpcb inp, struct ucred *cred,		struct ip6_pktopts opts, struct inpcb inp, struct ucred *cred,
struct ifnet *ifpp, struct in6_addr srcp)		struct ifnet *ifpp, struct in6_addr srcp)
{		{
▲ Show 20 Lines • Show All 339 Lines • ▼ Show 20 Lines	if (cred != NULL && prison_local_ip6(cred, &tmp, (inp != NULL &&
return (EADDRNOTAVAIL);		return (EADDRNOTAVAIL);
}		}

if (ifpp)		if (ifpp)
*ifpp = ifp;		*ifpp = ifp;

bcopy(&tmp, srcp, sizeof(*srcp));		bcopy(&tmp, srcp, sizeof(*srcp));
if (ia->ia_ifp == ifp)		if (ia->ia_ifp == ifp)
IP6STAT_INC(ip6s_sources_sameif[best_scope]);		IP6STAT_INC2(ip6s_sources_sameif, best_scope);
else		else
IP6STAT_INC(ip6s_sources_otherif[best_scope]);		IP6STAT_INC2(ip6s_sources_otherif, best_scope);
if (dst_scope == best_scope)		if (dst_scope == best_scope)
IP6STAT_INC(ip6s_sources_samescope[best_scope]);		IP6STAT_INC2(ip6s_sources_samescope, best_scope);
else		else
IP6STAT_INC(ip6s_sources_otherscope[best_scope]);		IP6STAT_INC2(ip6s_sources_otherscope, best_scope);
if (IFA6_IS_DEPRECATED(ia))		if (IFA6_IS_DEPRECATED(ia))
IP6STAT_INC(ip6s_sources_deprecated[best_scope]);		IP6STAT_INC2(ip6s_sources_deprecated, best_scope);
IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);		IN6_IFADDR_RUNLOCK(&in6_ifa_tracker);
return (0);		return (0);
}		}

/*		/*
* Select source address based on @inp, @dstsock and @opts.		* Select source address based on @inp, @dstsock and @opts.
* Stores selected address to @srcp. If @scope_ambiguous is set,		* Stores selected address to @srcp. If @scope_ambiguous is set,
* embed scope from selected outgoing interface. If @hlim pointer		* embed scope from selected outgoing interface. If @hlim pointer
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