[src/trunk]: src/sys Add the lock to refer the list included in ethercom for ...

[yamaguchi <yamaguchi%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9848302a30d3
branches:  trunk
changeset: 319857:9848302a30d3
user:      yamaguchi <yamaguchi%NetBSD.org@localhost>
date:      Thu Jun 14 08:06:07 2018 +0000

description:
Add the lock to refer the list included in ethercom for safety

The lock is already held while adding and deleting
ok ozaki-r@

diffstat:

 sys/net/if_vlan.c     |  11 +++++++++--
 sys/netinet/ip_carp.c |  11 +++++++++--
 2 files changed, 18 insertions(+), 4 deletions(-)

diffs (82 lines):

diff -r 5388f708a1cb -r 9848302a30d3 sys/net/if_vlan.c
--- a/sys/net/if_vlan.c Thu Jun 14 08:00:24 2018 +0000
+++ b/sys/net/if_vlan.c Thu Jun 14 08:06:07 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_vlan.c,v 1.127 2018/06/14 07:54:57 yamaguchi Exp $  */
+/*     $NetBSD: if_vlan.c,v 1.128 2018/06/14 08:06:07 yamaguchi Exp $  */
 
 /*
  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
@@ -78,7 +78,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_vlan.c,v 1.127 2018/06/14 07:54:57 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_vlan.c,v 1.128 2018/06/14 08:06:07 yamaguchi Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_inet.h"
@@ -1176,7 +1176,11 @@
         */
        error = ether_multiaddr(sa, addrlo, addrhi);
        KASSERT(error == 0);
+
+       ETHER_LOCK(&ifv->ifv_ec);
        mc->mc_enm = ether_lookup_multi(addrlo, addrhi, &ifv->ifv_ec);
+       ETHER_UNLOCK(&ifv->ifv_ec);
+
        KASSERT(mc->mc_enm != NULL);
 
        memcpy(&mc->mc_addr, sa, sa->sa_len);
@@ -1221,7 +1225,10 @@
         */
        if ((error = ether_multiaddr(sa, addrlo, addrhi)) != 0)
                return error;
+
+       ETHER_LOCK(&ifv->ifv_ec);
        enm = ether_lookup_multi(addrlo, addrhi, &ifv->ifv_ec);
+       ETHER_UNLOCK(&ifv->ifv_ec);
 
        error = ether_delmulti(sa, &ifv->ifv_ec);
        if (error != ENETRESET)
diff -r 5388f708a1cb -r 9848302a30d3 sys/netinet/ip_carp.c
--- a/sys/netinet/ip_carp.c     Thu Jun 14 08:00:24 2018 +0000
+++ b/sys/netinet/ip_carp.c     Thu Jun 14 08:06:07 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ip_carp.c,v 1.97 2018/06/14 07:54:57 yamaguchi Exp $   */
+/*     $NetBSD: ip_carp.c,v 1.98 2018/06/14 08:06:07 yamaguchi Exp $   */
 /*     $OpenBSD: ip_carp.c,v 1.113 2005/11/04 08:11:54 mcbride Exp $   */
 
 /*
@@ -33,7 +33,7 @@
 #endif
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ip_carp.c,v 1.97 2018/06/14 07:54:57 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ip_carp.c,v 1.98 2018/06/14 08:06:07 yamaguchi Exp $");
 
 /*
  * TODO:
@@ -2312,7 +2312,11 @@
         * statement shouldn't fail.
         */
        (void)ether_multiaddr(sa, addrlo, addrhi);
+
+       ETHER_LOCK(&sc->sc_ac);
        mc->mc_enm = ether_lookup_multi(addrlo, addrhi, &sc->sc_ac);
+       ETHER_UNLOCK(&sc->sc_ac);
+
        memcpy(&mc->mc_addr, sa, sa->sa_len);
        LIST_INSERT_HEAD(&sc->carp_mc_listhead, mc, mc_entries);
 
@@ -2351,7 +2355,10 @@
         */
        if ((error = ether_multiaddr(sa, addrlo, addrhi)) != 0)
                return (error);
+
+       ETHER_LOCK(&sc->sc_ac);
        enm = ether_lookup_multi(addrlo, addrhi, &sc->sc_ac);
+       ETHER_UNLOCK(&sc->sc_ac);
        if (enm == NULL)
                return (EINVAL);