Subject: [PATCH 1/8 net] netfilter: nf_flowtable: expose nf_flow_table_gc_cleanup()

From: Pablo Neira Ayuso <[email-masked]>
Date: Wed, 13 May 2020 18:41:33 +0200

This function schedules the flow teardown state and it forces a gc run.

Signed-off-by: Pablo Neira Ayuso <[email-masked]>
---
 include/net/netfilter/nf_flow_table.h | 2 ++
 net/netfilter/nf_flow_table_core.c    | 6 +++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h
index 6bf69652f57d..15e21044e611 100644
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -174,6 +174,8 @@ void flow_offload_refresh(struct nf_flowtable *flow_table,
 
 struct flow_offload_tuple_rhash *flow_offload_lookup(struct nf_flowtable *flow_table,
 						     struct flow_offload_tuple *tuple);
+void nf_flow_table_gc_cleanup(struct nf_flowtable *flowtable,
+			      struct net_device *dev);
 void nf_flow_table_cleanup(struct net_device *dev);
 
 int nf_flow_table_init(struct nf_flowtable *flow_table);
diff --git a/net/netfilter/nf_flow_table_core.c b/net/netfilter/nf_flow_table_core.c
index 4344e572b7f9..86aeee638ca4 100644
--- a/net/netfilter/nf_flow_table_core.c
+++ b/net/netfilter/nf_flow_table_core.c
@@ -586,8 +586,8 @@ static void nf_flow_table_do_cleanup(struct flow_offload *flow, void *data)
 		flow_offload_teardown(flow);
 }
 
-static void nf_flow_table_iterate_cleanup(struct nf_flowtable *flowtable,
-					  struct net_device *dev)
+void nf_flow_table_gc_cleanup(struct nf_flowtable *flowtable,
+			      struct net_device *dev)
 {
 	nf_flow_table_iterate(flowtable, nf_flow_table_do_cleanup, dev);
 	flush_delayed_work(&flowtable->gc_work);
@@ -600,7 +600,7 @@ void nf_flow_table_cleanup(struct net_device *dev)
 
 	mutex_lock(&flowtable_lock);
 	list_for_each_entry(flowtable, &flowtables, list)
-		nf_flow_table_iterate_cleanup(flowtable, dev);
+		nf_flow_table_gc_cleanup(flowtable, dev);
 	mutex_unlock(&flowtable_lock);
 }
 EXPORT_SYMBOL_GPL(nf_flow_table_cleanup);
-- 
2.20.1