| #ifndef __NET_TUN_PROTO_H |
| #define __NET_TUN_PROTO_H |
| |
| #include <linux/kernel.h> |
| |
| /* One byte protocol values as defined by VXLAN-GPE and NSH. These will |
| * hopefully get a shared IANA registry. |
| */ |
| #define TUN_P_IPV4 0x01 |
| #define TUN_P_IPV6 0x02 |
| #define TUN_P_ETHERNET 0x03 |
| #define TUN_P_NSH 0x04 |
| #define TUN_P_MPLS_UC 0x05 |
| |
| static inline __be16 tun_p_to_eth_p(u8 proto) |
| { |
| switch (proto) { |
| case TUN_P_IPV4: |
| return htons(ETH_P_IP); |
| case TUN_P_IPV6: |
| return htons(ETH_P_IPV6); |
| case TUN_P_ETHERNET: |
| return htons(ETH_P_TEB); |
| case TUN_P_NSH: |
| return htons(ETH_P_NSH); |
| case TUN_P_MPLS_UC: |
| return htons(ETH_P_MPLS_UC); |
| } |
| return 0; |
| } |
| |
| static inline u8 tun_p_from_eth_p(__be16 proto) |
| { |
| switch (proto) { |
| case htons(ETH_P_IP): |
| return TUN_P_IPV4; |
| case htons(ETH_P_IPV6): |
| return TUN_P_IPV6; |
| case htons(ETH_P_TEB): |
| return TUN_P_ETHERNET; |
| case htons(ETH_P_NSH): |
| return TUN_P_NSH; |
| case htons(ETH_P_MPLS_UC): |
| return TUN_P_MPLS_UC; |
| } |
| return 0; |
| } |
| |
| #endif |