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