Date: Thu, 23 Jul 2015 19:54:43 +0000 (UTC) From: Hiroki Sato <hrs@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r285822 - stable/10/sys/netinet6 Message-ID: <201507231954.t6NJsh5x028933@repo.freebsd.org>
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Author: hrs Date: Thu Jul 23 19:54:42 2015 New Revision: 285822 URL: https://svnweb.freebsd.org/changeset/base/285822 Log: MFC r273992: Fix a bug which prevented ND6_IFF_IFDISABLED flag from clearing when the newly-added IPv6 address was /128. Approved by: re (gjb) Modified: stable/10/sys/netinet6/in6.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/netinet6/in6.c ============================================================================== --- stable/10/sys/netinet6/in6.c Thu Jul 23 19:53:49 2015 (r285821) +++ stable/10/sys/netinet6/in6.c Thu Jul 23 19:54:42 2015 (r285822) @@ -701,7 +701,8 @@ in6_control(struct socket *so, u_long cm pr0.ndpr_plen = in6_mask2len(&ifra->ifra_prefixmask.sin6_addr, NULL); if (pr0.ndpr_plen == 128) { - break; /* we don't need to install a host route. */ + /* we don't need to install a host route. */ + goto aifaddr_out; } pr0.ndpr_prefix = ifra->ifra_addr; /* apply the mask for safety. */ @@ -769,32 +770,29 @@ in6_control(struct socket *so, u_long cm * that is, this address might make other addresses detached. */ pfxlist_onlink_check(); - if (error == 0 && ia) { - if (ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) { - /* - * Try to clear the flag when a new - * IPv6 address is added onto an - * IFDISABLED interface and it - * succeeds. - */ - struct in6_ndireq nd; - - memset(&nd, 0, sizeof(nd)); - nd.ndi.flags = ND_IFINFO(ifp)->flags; - nd.ndi.flags &= ~ND6_IFF_IFDISABLED; - if (nd6_ioctl(SIOCSIFINFO_FLAGS, - (caddr_t)&nd, ifp) < 0) - log(LOG_NOTICE, "SIOCAIFADDR_IN6: " - "SIOCSIFINFO_FLAGS for -ifdisabled " - "failed."); - /* - * Ignore failure of clearing the flag - * intentionally. The failure means - * address duplication was detected. - */ - } - EVENTHANDLER_INVOKE(ifaddr_event, ifp); +aifaddr_out: + if (error != 0 || ia == NULL) + break; + /* + * Try to clear the flag when a new IPv6 address is added + * onto an IFDISABLED interface and it succeeds. + */ + if (ND_IFINFO(ifp)->flags & ND6_IFF_IFDISABLED) { + struct in6_ndireq nd; + + memset(&nd, 0, sizeof(nd)); + nd.ndi.flags = ND_IFINFO(ifp)->flags; + nd.ndi.flags &= ~ND6_IFF_IFDISABLED; + if (nd6_ioctl(SIOCSIFINFO_FLAGS, (caddr_t)&nd, ifp) < 0) + log(LOG_NOTICE, "SIOCAIFADDR_IN6: " + "SIOCSIFINFO_FLAGS for -ifdisabled " + "failed."); + /* + * Ignore failure of clearing the flag intentionally. + * The failure means address duplication was detected. + */ } + EVENTHANDLER_INVOKE(ifaddr_event, ifp); break; }
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