1 files changed, 153 insertions, 0 deletions
diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
new file mode 100644
index 000000000000..c3a00eac4804
--- /dev/null
+++ b/net/core/flow_offload.c
@@ -0,0 +1,153 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <net/flow_offload.h>
+
+struct flow_rule *flow_rule_alloc(unsigned int num_actions)
+{
+	struct flow_rule *rule;
+
+	rule = kzalloc(sizeof(struct flow_rule) +
+		       sizeof(struct flow_action_entry) * num_actions,
+		       GFP_KERNEL);
+	if (!rule)
+		return NULL;
+
+	rule->action.num_entries = num_actions;
+
+	return rule;
+}
+EXPORT_SYMBOL(flow_rule_alloc);
+
+#define FLOW_DISSECTOR_MATCH(__rule, __type, __out)				\
+	const struct flow_match *__m = &(__rule)->match;			\
+	struct flow_dissector *__d = (__m)->dissector;				\
+										\
+	(__out)->key = skb_flow_dissector_target(__d, __type, (__m)->key);	\
+	(__out)->mask = skb_flow_dissector_target(__d, __type, (__m)->mask);	\
+
+void flow_rule_match_basic(const struct flow_rule *rule,
+			   struct flow_match_basic *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_BASIC, out);
+}
+EXPORT_SYMBOL(flow_rule_match_basic);
+
+void flow_rule_match_control(const struct flow_rule *rule,
+			     struct flow_match_control *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_CONTROL, out);
+}
+EXPORT_SYMBOL(flow_rule_match_control);
+
+void flow_rule_match_eth_addrs(const struct flow_rule *rule,
+			       struct flow_match_eth_addrs *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_eth_addrs);
+
+void flow_rule_match_vlan(const struct flow_rule *rule,
+			  struct flow_match_vlan *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_VLAN, out);
+}
+EXPORT_SYMBOL(flow_rule_match_vlan);
+
+void flow_rule_match_ipv4_addrs(const struct flow_rule *rule,
+				struct flow_match_ipv4_addrs *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IPV4_ADDRS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_ipv4_addrs);
+
+void flow_rule_match_ipv6_addrs(const struct flow_rule *rule,
+				struct flow_match_ipv6_addrs *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IPV6_ADDRS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_ipv6_addrs);
+
+void flow_rule_match_ip(const struct flow_rule *rule,
+			struct flow_match_ip *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_IP, out);
+}
+EXPORT_SYMBOL(flow_rule_match_ip);
+
+void flow_rule_match_ports(const struct flow_rule *rule,
+			   struct flow_match_ports *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_PORTS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_ports);
+
+void flow_rule_match_tcp(const struct flow_rule *rule,
+			 struct flow_match_tcp *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_TCP, out);
+}
+EXPORT_SYMBOL(flow_rule_match_tcp);
+
+void flow_rule_match_icmp(const struct flow_rule *rule,
+			  struct flow_match_icmp *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ICMP, out);
+}
+EXPORT_SYMBOL(flow_rule_match_icmp);
+
+void flow_rule_match_mpls(const struct flow_rule *rule,
+			  struct flow_match_mpls *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_MPLS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_mpls);
+
+void flow_rule_match_enc_control(const struct flow_rule *rule,
+				 struct flow_match_control *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_control);
+
+void flow_rule_match_enc_ipv4_addrs(const struct flow_rule *rule,
+				    struct flow_match_ipv4_addrs *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_ipv4_addrs);
+
+void flow_rule_match_enc_ipv6_addrs(const struct flow_rule *rule,
+				    struct flow_match_ipv6_addrs *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_ipv6_addrs);
+
+void flow_rule_match_enc_ip(const struct flow_rule *rule,
+			    struct flow_match_ip *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_IP, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_ip);
+
+void flow_rule_match_enc_ports(const struct flow_rule *rule,
+			       struct flow_match_ports *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_PORTS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_ports);
+
+void flow_rule_match_enc_keyid(const struct flow_rule *rule,
+			       struct flow_match_enc_keyid *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_KEYID, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_keyid);
+
+void flow_rule_match_enc_opts(const struct flow_rule *rule,
+			      struct flow_match_enc_opts *out)
+{
+	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_ENC_OPTS, out);
+}
+EXPORT_SYMBOL(flow_rule_match_enc_opts);