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Use in6_localip() instead of hand-rolled cycle.

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MFC after:	2 weeks
This commit is contained in:
Alexander V. Chernikov 2014-01-18 20:54:55 +00:00
parent 9080e7d023
commit 0c5d4bde90
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=260861
1 changed files with 9 additions and 17 deletions
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26
sys/netinet6/nd6_rtr.c
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@ -1899,7 +1899,7 @@ int
in6_tmpifadd(const struct in6_ifaddr *ia0, int forcegen, int delay)
{
struct ifnet *ifp = ia0->ia_ifa.ifa_ifp;
struct in6_ifaddr *newia, *ia;
struct in6_ifaddr *newia;
struct in6_aliasreq ifra;
int error;
int trylimit = 3; /* XXX: adhoc value */
@ -1933,26 +1933,18 @@ in6_tmpifadd(const struct in6_ifaddr *ia0, int forcegen, int delay)
* there may be a time lag between generation of the ID and generation
* of the address. So, we'll do one more sanity check.
*/
IN6_IFADDR_RLOCK();
TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
if (IN6_ARE_ADDR_EQUAL(&ia->ia_addr.sin6_addr,
&ifra.ifra_addr.sin6_addr)) {
if (trylimit-- == 0) {
IN6_IFADDR_RUNLOCK();
/*
* Give up. Something strange should have
* happened.
*/
nd6log((LOG_NOTICE, "in6_tmpifadd: failed to "
"find a unique random IFID\n"));
return (EEXIST);
}
IN6_IFADDR_RUNLOCK();
if (in6_localip(&ifra.ifra_addr.sin6_addr) != 0) {
if (trylimit-- > 0) {
forcegen = 1;
goto again;
}
/* Give up. Something strange should have happened. */
nd6log((LOG_NOTICE, "in6_tmpifadd: failed to "
"find a unique random IFID\n"));
return (EEXIST);
}
IN6_IFADDR_RUNLOCK();
/*
* The Valid Lifetime is the lower of the Valid Lifetime of the