1 #ifndef __NET_DST_METADATA_H
2 #define __NET_DST_METADATA_H 1
4 #include <linux/skbuff.h>
5 #include <net/ip_tunnels.h>
12 struct ip_tunnel_info tun_info;
16 static inline struct metadata_dst *skb_metadata_dst(struct sk_buff *skb)
18 struct metadata_dst *md_dst = (struct metadata_dst *) skb_dst(skb);
20 if (md_dst && md_dst->dst.flags & DST_METADATA)
26 static inline struct ip_tunnel_info *skb_tunnel_info(struct sk_buff *skb,
29 struct metadata_dst *md_dst = skb_metadata_dst(skb);
33 return &md_dst->u.tun_info;
37 rt = (struct rtable *)skb_dst(skb);
38 if (rt && rt->rt_lwtstate)
39 return lwt_tun_info(rt->rt_lwtstate);
46 static inline bool skb_valid_dst(const struct sk_buff *skb)
48 struct dst_entry *dst = skb_dst(skb);
50 return dst && !(dst->flags & DST_METADATA);
53 struct metadata_dst *metadata_dst_alloc(u8 optslen, gfp_t flags);
54 struct metadata_dst __percpu *metadata_dst_alloc_percpu(u8 optslen, gfp_t flags);
56 #endif /* __NET_DST_METADATA_H */