include/net/ife.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_IFE_H
   3 #define __NET_IFE_H
   4
   5 #include <linux/etherdevice.h>
   6 #include <linux/rtnetlink.h>
   7 #include <linux/module.h>
   8 #include <uapi/linux/ife.h>
   9
  10 #if IS_ENABLED(CONFIG_NET_IFE)
  11
  12 void *ife_encode(struct sk_buff *skb, u16 metalen);
  13 void *ife_decode(struct sk_buff *skb, u16 *metalen);
  14
  15 void *ife_tlv_meta_decode(void *skbdata, const void *ifehdr_end, u16 *attrtype,
  16                           u16 *dlen, u16 *totlen);
  17 int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
  18                         const void *dval);
  19
  20 void *ife_tlv_meta_next(void *skbdata);
  21
  22 #else
  23
  24 static inline void *ife_encode(struct sk_buff *skb, u16 metalen)
  25 {
  26         return NULL;
  27 }
  28
  29 static inline void *ife_decode(struct sk_buff *skb, u16 *metalen)
  30 {
  31         return NULL;
  32 }
  33
  34 static inline void *ife_tlv_meta_decode(void *skbdata, u16 *attrtype, u16 *dlen,
  35                                         u16 *totlen)
  36 {
  37         return NULL;
  38 }
  39
  40 static inline int ife_tlv_meta_encode(void *skbdata, u16 attrtype, u16 dlen,
  41                         const void *dval)
  42 {
  43         return 0;
  44 }
  45
  46 static inline void *ife_tlv_meta_next(void *skbdata)
  47 {
  48         return NULL;
  49 }
  50
  51 #endif
  52
  53 #endif /* __NET_IFE_H */