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kernel: nf_conntrack_rtcache: fix cleanup on netns delete and rmmod

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Fixes FS#1472, FS#2353, FS#2426

Fixes: b3f95490 ("kernel: generic: Add kernel 4.14 support")
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
master
Yousong Zhou 5 years ago
parent 28d84331f4
commit b7c58a1eeb
2 changed files with 26 additions and 2 deletions
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14
target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch
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@ -127,7 +127,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
# netlink interface for nf_conntrack # netlink interface for nf_conntrack
--- /dev/null --- /dev/null
+++ b/net/netfilter/nf_conntrack_rtcache.c +++ b/net/netfilter/nf_conntrack_rtcache.c
@@ -0,0 +1,428 @@ @@ -0,0 +1,440 @@
+/* route cache for netfilter. +/* route cache for netfilter.
+ * + *
+ * (C) 2014 Red Hat GmbH + * (C) 2014 Red Hat GmbH
@ -444,6 +444,11 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ .destroy = nf_conn_rtcache_destroy, + .destroy = nf_conn_rtcache_destroy,
+}; +};
+ +
+static int __net_init rtcache_net_init(struct net *net)
+{
+ return nf_register_net_hooks(net, rtcache_ops, ARRAY_SIZE(rtcache_ops));
+}
+
+static void __net_exit rtcache_net_exit(struct net *net) +static void __net_exit rtcache_net_exit(struct net *net)
+{ +{
+ /* remove hooks so no new connections get rtcache extension */ + /* remove hooks so no new connections get rtcache extension */
@ -451,6 +456,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+} +}
+ +
+static struct pernet_operations rtcache_ops_net_ops = { +static struct pernet_operations rtcache_ops_net_ops = {
+ .init = rtcache_net_init,
+ .exit = rtcache_net_exit, + .exit = rtcache_net_exit,
+}; +};
+ +
@ -531,6 +537,11 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ synchronize_net(); + synchronize_net();
+ +
+ unregister_netdevice_notifier(&nf_rtcache_notifier); + unregister_netdevice_notifier(&nf_rtcache_notifier);
+ unregister_pernet_subsys(&rtcache_ops_net_ops);
+ for_each_net(net)
+ nf_unregister_net_hooks(net, rtcache_ops, ARRAY_SIZE(rtcache_ops));
+
+ synchronize_net();
+ +
+ rtnl_lock(); + rtnl_lock();
+ +
@ -547,6 +558,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ } + }
+ +
+ rtnl_unlock(); + rtnl_unlock();
+
+ synchronize_net(); + synchronize_net();
+ nf_ct_extend_unregister(&rtcache_extend); + nf_ct_extend_unregister(&rtcache_extend);
+} +}

14
target/linux/generic/backport-4.19/020-backport_netfilter_rtcache.patch
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@ -127,7 +127,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
# netlink interface for nf_conntrack # netlink interface for nf_conntrack
--- /dev/null --- /dev/null
+++ b/net/netfilter/nf_conntrack_rtcache.c +++ b/net/netfilter/nf_conntrack_rtcache.c
@@ -0,0 +1,428 @@ @@ -0,0 +1,440 @@
+/* route cache for netfilter. +/* route cache for netfilter.
+ * + *
+ * (C) 2014 Red Hat GmbH + * (C) 2014 Red Hat GmbH
@ -444,6 +444,11 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ .destroy = nf_conn_rtcache_destroy, + .destroy = nf_conn_rtcache_destroy,
+}; +};
+ +
+static int __net_init rtcache_net_init(struct net *net)
+{
+ return nf_register_net_hooks(net, rtcache_ops, ARRAY_SIZE(rtcache_ops));
+}
+
+static void __net_exit rtcache_net_exit(struct net *net) +static void __net_exit rtcache_net_exit(struct net *net)
+{ +{
+ /* remove hooks so no new connections get rtcache extension */ + /* remove hooks so no new connections get rtcache extension */
@ -451,6 +456,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+} +}
+ +
+static struct pernet_operations rtcache_ops_net_ops = { +static struct pernet_operations rtcache_ops_net_ops = {
+ .init = rtcache_net_init,
+ .exit = rtcache_net_exit, + .exit = rtcache_net_exit,
+}; +};
+ +
@ -531,6 +537,11 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ synchronize_net(); + synchronize_net();
+ +
+ unregister_netdevice_notifier(&nf_rtcache_notifier); + unregister_netdevice_notifier(&nf_rtcache_notifier);
+ unregister_pernet_subsys(&rtcache_ops_net_ops);
+ for_each_net(net)
+ nf_unregister_net_hooks(net, rtcache_ops, ARRAY_SIZE(rtcache_ops));
+
+ synchronize_net();
+ +
+ rtnl_lock(); + rtnl_lock();
+ +
@ -547,6 +558,7 @@ Signed-off-by: Florian Westphal <fw@strlen.de>
+ } + }
+ +
+ rtnl_unlock(); + rtnl_unlock();
+
+ synchronize_net(); + synchronize_net();
+ nf_ct_extend_unregister(&rtcache_extend); + nf_ct_extend_unregister(&rtcache_extend);
+} +}

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