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 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 */