From: Maciej Żenczykowski <maze@google.com>
Date: Sat, 8 Feb 2014 00:23:48 +0000 (-0800)
Subject: net: fix 'ip rule' iif/oif device rename
X-Git-Tag: v3.4.83~86
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d4f0afc9ecf77da7da6e1e5a8b35ce8067bdf0dc;p=thirdparty%2Fkernel%2Fstable.git

net: fix 'ip rule' iif/oif device rename

[ Upstream commit 946c032e5a53992ea45e062ecb08670ba39b99e3 ]

ip rules with iif/oif references do not update:
(detach/attach) across interface renames.

Signed-off-by: Maciej Żenczykowski <maze@google.com>
CC: Willem de Bruijn <willemb@google.com>
CC: Eric Dumazet <edumazet@google.com>
CC: Chris Davis <chrismd@google.com>
CC: Carlo Contavalli <ccontavalli@google.com>
Google-Bug-Id: 12936021
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/core/fib_rules.c b/net/core/fib_rules.c
index c0c21b1ce1ecf..6af54f2d0da00 100644
--- a/net/core/fib_rules.c
+++ b/net/core/fib_rules.c
@@ -718,6 +718,13 @@ static int fib_rules_event(struct notifier_block *this, unsigned long event,
 			attach_rules(&ops->rules_list, dev);
 		break;
 
+	case NETDEV_CHANGENAME:
+		list_for_each_entry(ops, &net->rules_ops, list) {
+			detach_rules(&ops->rules_list, dev);
+			attach_rules(&ops->rules_list, dev);
+		}
+		break;
+
 	case NETDEV_UNREGISTER:
 		list_for_each_entry(ops, &net->rules_ops, list)
 			detach_rules(&ops->rules_list, dev);