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From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 23 Jan 2018 17:46:09 +0100
Subject: [PATCH] netfilter: nft_flow_offload: move flowtable cleanup
routines to nf_flow_table
Move the flowtable cleanup routines to nf_flow_table and expose the
nf_flow_table_cleanup() helper function.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -95,6 +95,9 @@ struct flow_offload_tuple_rhash *flow_of
int nf_flow_table_iterate(struct nf_flowtable *flow_table,
void (*iter)(struct flow_offload *flow, void *data),
void *data);
+
+void nf_flow_table_cleanup(struct net *net, struct net_device *dev);
+
void nf_flow_offload_work_gc(struct work_struct *work);
extern const struct rhashtable_params nf_flow_offload_rhash_params;
--- a/net/netfilter/nf_flow_table.c
+++ b/net/netfilter/nf_flow_table.c
@@ -4,6 +4,7 @@
#include <linux/netfilter.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
+#include <net/netfilter/nf_tables.h>
#include <net/netfilter/nf_flow_table.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_core.h>
@@ -425,5 +426,28 @@ int nf_flow_dnat_port(const struct flow_
}
EXPORT_SYMBOL_GPL(nf_flow_dnat_port);
+static void nf_flow_table_do_cleanup(struct flow_offload *flow, void *data)
+{
+ struct net_device *dev = data;
+
+ if (dev && flow->tuplehash[0].tuple.iifidx != dev->ifindex)
+ return;
+
+ flow_offload_dead(flow);
+}
+
+static void nf_flow_table_iterate_cleanup(struct nf_flowtable *flowtable,
+ void *data)
+{
+ nf_flow_table_iterate(flowtable, nf_flow_table_do_cleanup, data);
+ flush_delayed_work(&flowtable->gc_work);
+}
+
+void nf_flow_table_cleanup(struct net *net, struct net_device *dev)
+{
+ nft_flow_table_iterate(net, nf_flow_table_iterate_cleanup, dev);
+}
+EXPORT_SYMBOL_GPL(nf_flow_table_cleanup);
+
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -194,23 +194,6 @@ static struct nft_expr_type nft_flow_off
.owner = THIS_MODULE,
};
-static void flow_offload_iterate_cleanup(struct flow_offload *flow, void *data)
-{
- struct net_device *dev = data;
-
- if (dev && flow->tuplehash[0].tuple.iifidx != dev->ifindex)
- return;
-
- flow_offload_dead(flow);
-}
-
-static void nft_flow_offload_iterate_cleanup(struct nf_flowtable *flowtable,
- void *data)
-{
- nf_flow_table_iterate(flowtable, flow_offload_iterate_cleanup, data);
- flush_delayed_work(&flowtable->gc_work);
-}
-
static int flow_offload_netdev_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
@@ -219,7 +202,7 @@ static int flow_offload_netdev_event(str
if (event != NETDEV_DOWN)
return NOTIFY_DONE;
- nft_flow_table_iterate(dev_net(dev), nft_flow_offload_iterate_cleanup, dev);
+ nf_flow_table_cleanup(dev_net(dev), dev);
return NOTIFY_DONE;
}
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