| 1 | #ifndef __NET_TUN_PROTO_H |
|---|---|
| 2 | #define __NET_TUN_PROTO_H |
| 3 | |
| 4 | #include <linux/if_ether.h> |
| 5 | #include <linux/types.h> |
| 6 | |
| 7 | /* One byte protocol values as defined by VXLAN-GPE and NSH. These will |
| 8 | * hopefully get a shared IANA registry. |
| 9 | */ |
| 10 | #define TUN_P_IPV4 0x01 |
| 11 | #define TUN_P_IPV6 0x02 |
| 12 | #define TUN_P_ETHERNET 0x03 |
| 13 | #define TUN_P_NSH 0x04 |
| 14 | #define TUN_P_MPLS_UC 0x05 |
| 15 | |
| 16 | static inline __be16 tun_p_to_eth_p(u8 proto) |
| 17 | { |
| 18 | switch (proto) { |
| 19 | case TUN_P_IPV4: |
| 20 | return htons(ETH_P_IP); |
| 21 | case TUN_P_IPV6: |
| 22 | return htons(ETH_P_IPV6); |
| 23 | case TUN_P_ETHERNET: |
| 24 | return htons(ETH_P_TEB); |
| 25 | case TUN_P_NSH: |
| 26 | return htons(ETH_P_NSH); |
| 27 | case TUN_P_MPLS_UC: |
| 28 | return htons(ETH_P_MPLS_UC); |
| 29 | } |
| 30 | return 0; |
| 31 | } |
| 32 | |
| 33 | static inline u8 tun_p_from_eth_p(__be16 proto) |
| 34 | { |
| 35 | switch (proto) { |
| 36 | case htons(ETH_P_IP): |
| 37 | return TUN_P_IPV4; |
| 38 | case htons(ETH_P_IPV6): |
| 39 | return TUN_P_IPV6; |
| 40 | case htons(ETH_P_TEB): |
| 41 | return TUN_P_ETHERNET; |
| 42 | case htons(ETH_P_NSH): |
| 43 | return TUN_P_NSH; |
| 44 | case htons(ETH_P_MPLS_UC): |
| 45 | return TUN_P_MPLS_UC; |
| 46 | } |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | #endif |
| 51 |