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 9 struct module; 10 11 struct 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 20 struct 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 26 struct tcf_meta_info { 27 const struct tcf_meta_ops *ops; 28 void *metaval; 29 u16 metaid; 30 struct list_head metalist; 31 }; 32 33 struct 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 51 int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi); 52 int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi); 53 int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); 54 int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); 55 int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi); 56 int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi); 57 int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi); 58 int ife_validate_meta_u32(void *val, int len); 59 int ife_validate_meta_u16(void *val, int len); 60 int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi); 61 void ife_release_meta_gen(struct tcf_meta_info *mi); 62 int register_ife_op(struct tcf_meta_ops *mops); 63 int unregister_ife_op(struct tcf_meta_ops *mops); 64 65 #endif /* __NET_TC_IFE_H */ 66