WSL2-Linux-Kernel/net/core/flow_offload.c

/* 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_cvlan(const struct flow_rule *rule,
			   struct flow_match_vlan *out)
{
	FLOW_DISSECTOR_MATCH(rule, FLOW_DISSECTOR_KEY_CVLAN, out);
}
EXPORT_SYMBOL(flow_rule_match_cvlan);

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);