include/net/tc_act/tc_ife.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_TC_IFE_H
   3 #define __NET_TC_IFE_H
   4
   5 #include <net/act_api.h>
   6 #include <linux/etherdevice.h>
   7 #include <linux/rtnetlink.h>
   8
   9 struct module;
  10
  11 struct tcf_ife_params {
  12         u8 eth_dst[ETH_ALEN];
  13         u8 eth_src[ETH_ALEN];
  14         u16 eth_type;
  15         u16 flags;
  16
  17         struct rcu_head rcu;
  18 };
  19
  20 struct tcf_ife_info {
  21         struct tc_action common;
  22         struct tcf_ife_params __rcu *params;
  23         /* list of metaids allowed */
  24         struct list_head metalist;
  25 };
  26 #define to_ife(a) ((struct tcf_ife_info *)a)
  27
  28 struct tcf_meta_info {
  29         const struct tcf_meta_ops *ops;
  30         void *metaval;
  31         u16 metaid;
  32         struct list_head metalist;
  33 };
  34
  35 struct tcf_meta_ops {
  36         u16 metaid; /*Maintainer provided ID */
  37         u16 metatype; /*netlink attribute type (look at net/netlink.h) */
  38         const char *name;
  39         const char *synopsis;
  40         struct list_head list;
  41         int     (*check_presence)(struct sk_buff *, struct tcf_meta_info *);
  42         int     (*encode)(struct sk_buff *, void *, struct tcf_meta_info *);
  43         int     (*decode)(struct sk_buff *, void *, u16 len);
  44         int     (*get)(struct sk_buff *skb, struct tcf_meta_info *mi);
  45         int     (*alloc)(struct tcf_meta_info *, void *, gfp_t);
  46         void    (*release)(struct tcf_meta_info *);
  47         int     (*validate)(void *val, int len);
  48         struct module   *owner;
  49 };
  50
  51 #define MODULE_ALIAS_IFE_META(metan)   MODULE_ALIAS("ife-meta-" metan)
  52
  53 int ife_get_meta_u32(struct sk_buff *skb, struct tcf_meta_info *mi);
  54 int ife_get_meta_u16(struct sk_buff *skb, struct tcf_meta_info *mi);
  55 int ife_alloc_meta_u32(struct tcf_meta_info *mi, void *metaval, gfp_t gfp);
  56 int ife_alloc_meta_u16(struct tcf_meta_info *mi, void *metaval, gfp_t gfp);
  57 int ife_check_meta_u32(u32 metaval, struct tcf_meta_info *mi);
  58 int ife_check_meta_u16(u16 metaval, struct tcf_meta_info *mi);
  59 int ife_encode_meta_u32(u32 metaval, void *skbdata, struct tcf_meta_info *mi);
  60 int ife_validate_meta_u32(void *val, int len);
  61 int ife_validate_meta_u16(void *val, int len);
  62 int ife_encode_meta_u16(u16 metaval, void *skbdata, struct tcf_meta_info *mi);
  63 void ife_release_meta_gen(struct tcf_meta_info *mi);
  64 int register_ife_op(struct tcf_meta_ops *mops);
  65 int unregister_ife_op(struct tcf_meta_ops *mops);
  66
  67 #endif /* __NET_TC_IFE_H */