tc_ife.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __NET_TC_IFE_H
 3#define __NET_TC_IFE_H
 4
 5#include <net/act_api.h>
 6#include <linux/etherdevice.h>
 7#include <linux/rtnetlink.h>
 8
 9struct module;
10
11struct tcf_ife_params {
12	u8 eth_dst[ETH_ALEN];
13	u8 eth_src[ETH_ALEN];
14	u16 eth_type;
15	u16 flags;
16	struct list_head metalist;
17	struct rcu_head rcu;
18};
19
20struct tcf_ife_info {
21	struct tc_action common;
22	struct tcf_ife_params __rcu *params;
23};
24#define to_ife(a) ((struct tcf_ife_info *)a)
25
26struct tcf_meta_info {
27	const struct tcf_meta_ops *ops;
28	void *metaval;
29	u16 metaid;
30	struct list_head metalist;
31};
32
33struct tcf_meta_ops {
34	u16 metaid; /*Maintainer provided ID */
35	u16 metatype; /*netlink attribute type (look at net/netlink.h) */
36	const char *name;
37	const char *synopsis;
38	struct list_head list;
39	int	(*check_presence)(struct sk_buff *, struct tcf_meta_info *);
40	int	(*encode)(struct sk_buff *, void *, struct tcf_meta_info *);
41	int	(*decode)(struct sk_buff *, void *, u16 len);
42	int	(*get)(struct sk_buff *skb, struct tcf_meta_info *mi);
43	int	(*alloc)(struct tcf_meta_info *, void *, gfp_t);
44	void	(*release)(struct tcf_meta_info *);
45	int	(*validate)(void *val, int len);
46	struct module	*owner;
47};
48
49#define MODULE_ALIAS_IFE_META(metan)   MODULE_ALIAS("ife-meta-" metan)
50
51int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi);
52int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi);
53int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp);
54int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp);
55int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi);
56int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi);
57int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi);
58int ife_validate_meta_u32(void *val, int len);
59int ife_validate_meta_u16(void *val, int len);
60int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi);
61void ife_release_meta_gen(struct tcf_meta_info *mi);
62int register_ife_op(struct tcf_meta_ops *mops);
63int unregister_ife_op(struct tcf_meta_ops *mops);
64
65#endif /* __NET_TC_IFE_H */