netdev - [PATCH v11 nf-next 3/6] netfilter :nf_flow_table_offload: Add nf_flow_rule

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Message-ID: <20250408142802.96101-4-ericwouds@gmail.com>
Date: Tue,  8 Apr 2025 16:27:59 +0200
From: Eric Woudstra <ericwouds@...il.com>
To: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	Pablo Neira Ayuso <pablo@...filter.org>,
	Jozsef Kadlecsik <kadlec@...filter.org>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Ido Schimmel <idosch@...dia.com>,
	Kuniyuki Iwashima <kuniyu@...zon.com>,
	Stanislav Fomichev <sdf@...ichev.me>,
	Ahmed Zaki <ahmed.zaki@...el.com>,
	Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: netdev@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	bridge@...ts.linux.dev,
	Eric Woudstra <ericwouds@...il.com>
Subject: [PATCH v11 nf-next 3/6] netfilter :nf_flow_table_offload: Add nf_flow_rule_bridge()

Add nf_flow_rule_bridge().

It only calls the common rule and adds the redirect.

Reviewed-by: Nikolay Aleksandrov <razor@...ckwall.org>
Signed-off-by: Eric Woudstra <ericwouds@...il.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 9d9363e91587..f60ecedf2fa7 100644
--- a/include/net/netfilter/nf_flow_table.h
+++ b/include/net/netfilter/nf_flow_table.h
@@ -344,6 +344,9 @@ 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 e06bc36f49fe..5543ce03a196 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