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MFC r296984:

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Change in6_selectsrc() to allow usage of non-local IPv6 addresses in
  IPV6_PKTINFO ancillary data when IPV6_BINDANY socket option is set.
This commit is contained in:
ae 2016-03-31 09:55:21 +00:00
parent e2f5e1b2b4
commit 8dd17d694b
1 changed files with 18 additions and 10 deletions
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28
sys/netinet6/in6_src.c
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@ -249,19 +249,27 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
(inp->inp_flags & IN6P_IPV6_V6ONLY) != 0))) != 0)
return (error);
ia6 = (struct in6_ifaddr *)ifa_ifwithaddr(
(struct sockaddr *)&srcsock);
if (ia6 == NULL ||
(ia6->ia6_flags & (IN6_IFF_ANYCAST | IN6_IFF_NOTREADY))) {
if (ia6 != NULL)
ifa_free(&ia6->ia_ifa);
return (EADDRNOTAVAIL);
}
/*
* If IPV6_BINDANY socket option is set, we allow to specify
* non local addresses as source address in IPV6_PKTINFO
* ancillary data.
*/
if ((inp->inp_flags & INP_BINDANY) == 0) {
ia6 = (struct in6_ifaddr *)ifa_ifwithaddr(
(struct sockaddr *)&srcsock);
if (ia6 == NULL || (ia6->ia6_flags & (IN6_IFF_ANYCAST |
IN6_IFF_NOTREADY))) {
if (ia6 != NULL)
ifa_free(&ia6->ia_ifa);
return (EADDRNOTAVAIL);
}
bcopy(&ia6->ia_addr.sin6_addr, srcp, sizeof(*srcp));
ifa_free(&ia6->ia_ifa);
} else
bcopy(&srcsock.sin6_addr, srcp, sizeof(*srcp));
pi->ipi6_addr = srcsock.sin6_addr; /* XXX: this overrides pi */
if (ifpp)
*ifpp = ifp;
bcopy(&ia6->ia_addr.sin6_addr, srcp, sizeof(*srcp));
ifa_free(&ia6->ia_ifa);
return (0);
}