projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| f38a9eb1 TG |
1 | #ifndef __NET_DST_METADATA_H |
| 2 | #define __NET_DST_METADATA_H 1 | |
| 3 | ||
| 4 | #include <linux/skbuff.h> | |
| 5 | #include <net/ip_tunnels.h> | |
| 6 | #include <net/dst.h> | |
| 7 | ||
| 8 | struct metadata_dst { | |
| 9 | struct dst_entry dst; | |
| 10 | size_t opts_len; | |
| ee122c79 TG |
11 | union { |
| 12 | struct ip_tunnel_info tun_info; | |
| 13 | } u; | |
| f38a9eb1 TG |
14 | }; |
| 15 | ||
| 16 | static inline struct metadata_dst *skb_metadata_dst(struct sk_buff *skb) | |
| 17 | { | |
| 18 | struct metadata_dst *md_dst = (struct metadata_dst *) skb_dst(skb); | |
| 19 | ||
| 20 | if (md_dst && md_dst->dst.flags & DST_METADATA) | |
| 21 | return md_dst; | |
| 22 | ||
| 23 | return NULL; | |
| 24 | } | |
| 25 | ||
| 61adedf3 | 26 | static inline struct ip_tunnel_info *skb_tunnel_info(struct sk_buff *skb) |
| ee122c79 TG |
27 | { |
| 28 | struct metadata_dst *md_dst = skb_metadata_dst(skb); | |
| 61adedf3 | 29 | struct dst_entry *dst; |
| ee122c79 TG |
30 | |
| 31 | if (md_dst) | |
| 32 | return &md_dst->u.tun_info; | |
| 33 | ||
| 61adedf3 JB |
34 | dst = skb_dst(skb); |
| 35 | if (dst && dst->lwtstate) | |
| 36 | return lwt_tun_info(dst->lwtstate); | |
| 3093fbe7 | 37 | |
| ee122c79 TG |
38 | return NULL; |
| 39 | } | |
| 40 | ||
| f38a9eb1 TG |
41 | static inline bool skb_valid_dst(const struct sk_buff *skb) |
| 42 | { | |
| 43 | struct dst_entry *dst = skb_dst(skb); | |
| 44 | ||
| 45 | return dst && !(dst->flags & DST_METADATA); | |
| 46 | } | |
| 47 | ||
| 48 | struct metadata_dst *metadata_dst_alloc(u8 optslen, gfp_t flags); | |
| d3aa45ce | 49 | struct metadata_dst __percpu *metadata_dst_alloc_percpu(u8 optslen, gfp_t flags); |
| f38a9eb1 TG |
50 | |
| 51 | #endif /* __NET_DST_METADATA_H */ |