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