LXR linux/include/net/tc_act/tc

   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
  10struct 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
  22struct tcf_meta_info {
  23        const struct tcf_meta_ops *ops;
  24        void *metaval;
  25        u16 metaid;
  26        struct list_head metalist;
  27};
  28
  29struct 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
  47int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi);
  48int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi);
  49int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
  50                        const void *dval);
  51int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval);
  52int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval);
  53int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi);
  54int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi);
  55int ife_validate_meta_u32(void *val, int len);
  56int ife_validate_meta_u16(void *val, int len);
  57void ife_release_meta_gen(struct tcf_meta_info *mi);
  58int register_ife_op(struct tcf_meta_ops *mops);
  59int unregister_ife_op(struct tcf_meta_ops *mops);
  60
  61#endif /* __NET_TC_IFE_H */
  62