Date: Mon, 10 Feb 2014 16:13:45 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r261717 - stable/9/sys/netinet6 Message-ID: <201402101613.s1AGDj4X099774@svn.freebsd.org>
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Author: ae Date: Mon Feb 10 16:13:45 2014 New Revision: 261717 URL: http://svnweb.freebsd.org/changeset/base/261717 Log: MFC r261400: Take exclusive lock only when lle isn't NULL. We don't need write access to lle in most cases. MFC r261583: Unlock entry before retry. Sponsored by: Yandex LLC Modified: stable/9/sys/netinet6/nd6.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/netinet6/nd6.c ============================================================================== --- stable/9/sys/netinet6/nd6.c Mon Feb 10 15:23:40 2014 (r261716) +++ stable/9/sys/netinet6/nd6.c Mon Feb 10 16:13:45 2014 (r261717) @@ -1895,7 +1895,7 @@ nd6_output_lle(struct ifnet *ifp, struct * or an anycast address(i.e. not a multicast). */ - flags = ((m != NULL) || (lle != NULL)) ? LLE_EXCLUSIVE : 0; + flags = (lle != NULL) ? LLE_EXCLUSIVE : 0; if (ln == NULL) { retry: IF_AFDATA_RLOCK(ifp); @@ -1931,6 +1931,7 @@ nd6_output_lle(struct ifnet *ifp, struct ln->ln_state < ND6_LLINFO_REACHABLE) { if ((flags & LLE_EXCLUSIVE) == 0) { flags |= LLE_EXCLUSIVE; + LLE_RUNLOCK(ln); goto retry; } ln->ln_state = ND6_LLINFO_STALE;
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