[PATCH v9 nf 08/15] netfilter :nf_flow_table_offload: Add nf_flow_rule_bridge()

Eric Woudstra
2025-03-05T10:30:15Z

Add nf_flow_rule_bridge().

It only calls the common rule and adds the redirect.

Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
---
include/net/netfilter/nf_flow_table.h | 3 +++
net/netfilter/nf_flow_table_offload.c | 13 +++++++++++++
2 files changed, 16 insertions(+)

diff --git a/include/net/netfilter/nf_flow_table.h b/include/net/netfilter/nf_flow_table.h
index 4ab32fb61865..a7f5d6166088 100644
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -340,6 +340,9 @@ void nf_flow_table_offload_flush_cleanup(struct nf_flowtable *flowtable);
int nf_flow_table_offload_setup(struct nf_flowtable *flowtable,
struct net_device *dev,
enum flow_block_command cmd);
+int nf_flow_rule_bridge(struct net *net, struct flow_offload *flow,
+ enum flow_offload_tuple_dir dir,
+ struct nf_flow_rule *flow_rule);
int nf_flow_rule_route_ipv4(struct net *net, struct flow_offload *flow,
enum flow_offload_tuple_dir dir,
struct nf_flow_rule *flow_rule);
diff --git a/net/netfilter/nf_flow_table_offload.c b/net/netfilter/nf_flow_table_offload.c
index d8f7bfd60ac6..3cc30ebfa6ff 100644
--- a/net/netfilter/nf_flow_table_offload.c
+++ b/net/netfilter/nf_flow_table_offload.c
@@ -679,6 +679,19 @@ nf_flow_rule_route_common(struct net *net, const struct flow_offload *flow,
return 0;
}

+int nf_flow_rule_bridge(struct net *net, struct flow_offload *flow,
+ enum flow_offload_tuple_dir dir,
+ struct nf_flow_rule *flow_rule)
+{
+ if (nf_flow_rule_route_common(net, flow, dir, flow_rule) < 0)
+ return -1;
+
+ flow_offload_redirect(net, flow, dir, flow_rule);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nf_flow_rule_bridge);
+
int nf_flow_rule_route_ipv4(struct net *net, struct flow_offload *flow,
enum flow_offload_tuple_dir dir,
struct nf_flow_rule *flow_rule)
--
2.47.1