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 tc_action 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) ((struct tcf_ife_info *)a) 20 21 struct tcf_meta_info { 22 const struct tcf_meta_ops *ops; 23 void *metaval; 24 u16 metaid; 25 struct list_head metalist; 26 }; 27 28 struct tcf_meta_ops { 29 u16 metaid; /*Maintainer provided ID */ 30 u16 metatype; /*netlink attribute type (look at net/netlink.h) */ 31 const char *name; 32 const char *synopsis; 33 struct list_head list; 34 int (*check_presence)(struct sk_buff *, struct tcf_meta_info *); 35 int (*encode)(struct sk_buff *, void *, struct tcf_meta_info *); 36 int (*decode)(struct sk_buff *, void *, u16 len); 37 int (*get)(struct sk_buff *skb, struct tcf_meta_info *mi); 38 int (*alloc)(struct tcf_meta_info *, void *, gfp_t); 39 void (*release)(struct tcf_meta_info *); 40 int (*validate)(void *val, int len); 41 struct module *owner; 42 }; 43 44 #define MODULE_ALIAS_IFE_META(metan) MODULE_ALIAS("ifemeta" __stringify_1(metan)) 45 46 int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi); 47 int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi); 48 int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen, 49 const void *dval); 50 int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); 51 int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp); 52 int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi); 53 int ife_check_meta_u16(u16 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 int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi); 58 void ife_release_meta_gen(struct tcf_meta_info *mi); 59 int register_ife_op(struct tcf_meta_ops *mops); 60 int unregister_ife_op(struct tcf_meta_ops *mops); 61 62 #endif /* __NET_TC_IFE_H */ 63