include/net/tc_act/tc_ife.h

   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 */