linux-kernel - [PATCH 3.16 238/346] ipv6: add missing netconf notif when 'all' is updated

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Date:   Mon, 14 Nov 2016 00:14:20 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Nicolas Dichtel" <nicolas.dichtel@...nd.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.16 238/346] ipv6: add missing netconf notif when 'all'
 is updated

3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>

commit d26c638c16cb54f6fb1507e27df93ede692db572 upstream.

The 'default' value was not advertised.

Fixes: f3a1bfb11ccb ("rtnl/ipv6: use netconf msg to advertise forwarding status")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 net/ipv6/addrconf.c | 7 +++++++
 1 file changed, 7 insertions(+)

--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -723,7 +723,14 @@ static int addrconf_fixup_forwarding(str
 	}
 
 	if (p == &net->ipv6.devconf_all->forwarding) {
+		int old_dflt = net->ipv6.devconf_dflt->forwarding;
+
 		net->ipv6.devconf_dflt->forwarding = newf;
+		if ((!newf) ^ (!old_dflt))
+			inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+						     NETCONFA_IFINDEX_DEFAULT,
+						     net->ipv6.devconf_dflt);
+
 		addrconf_forward_change(net, newf);
 		if ((!newf) ^ (!old))
 			inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING,