1 #ifndef __NET_TC_IFE_H 2 #define __NET_TC_IFE_H 3 4 #include <net/act_api.h> 5 #include <linux/etherdevice.h> 6 #include <linux/rtnetlink.h> 7 #include <linux/module.h> 8 9 #define IFE_METAHDRLEN 2 10 struct tcf_ife_info { 11 struct tcf_common common; 12 u8 eth_dst[ETH_ALEN]; 13 u8 eth_src[ETH_ALEN]; 14 u16 eth_type; 15 u16 flags; 16 /* list of metaids allowed */ 17 struct list_head metalist; 18 }; 19 #define to_ife(a) \ 20 container_of(a->priv, struct tcf_ife_info, common) 21 22 struct tcf_meta_info { 23 const struct tcf_meta_ops *ops; 24 void *metaval; 25 u16 metaid; 26 struct list_head metalist; 27 }; 28 29 struct tcf_meta_ops { 30 u16 metaid; /*Maintainer provided ID */ 31 u16 metatype; /*netlink attribute type (look at net/netlink.h) */ 32 const char *name; 33 const char *synopsis; 34 struct list_head list; 35 int (*check_presence)(struct sk_buff *, struct tcf_meta_info *); 36 int (*encode)(struct sk_buff *, void *, struct tcf_meta_info *); 37 int (*decode)(struct sk_buff *, void *, u16 len); 38 int (*get)(struct sk_buff *skb, struct tcf_meta_info *mi); 39 int (*alloc)(struct tcf_meta_info *, void *); 40 void (*release)(struct tcf_meta_info *); 41 int (*validate)(void *val, int len); 42 struct module *owner; 43 }; 44 45 #define MODULE_ALIAS_IFE_META(metan) MODULE_ALIAS("ifemeta" __stringify_1(metan)) 46 47 int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi); 48 int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi); 49 int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen, 50 const void *dval); 51 int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval); 52 int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval); 53 int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi); 54 int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi); 55 int ife_validate_meta_u32(void *val, int len); 56 int ife_validate_meta_u16(void *val, int len); 57 void ife_release_meta_gen(struct tcf_meta_info *mi); 58 int register_ife_op(struct tcf_meta_ops *mops); 59 int unregister_ife_op(struct tcf_meta_ops *mops); 60 61 #endif /* __NET_TC_IFE_H */ 62