47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#pragma once
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "layer.h"
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enum tunnel_type
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{
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TUNNEL_IPV4 = 1, // contain layers: IPv4, (next inner layer must be IPv4 / IPv6)
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TUNNEL_IPV6 = 2, // contain layers: IPv6, (next inner layer must be IPv4 / IPv6)
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TUNNEL_GRE = 3, // contain layers: IPv4 + GRE
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// contain layers: IPv6 + GRE
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TUNNEL_GTP = 4, // contain layers: IPv4 + UDP + GTP
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// contain layers: IPv6 + UDP + GTP
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TUNNEL_VXLAN = 5, // contain layers: IPv4 + UDP + VXLAN
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// contain layers: IPv6 + UDP + VXLAN
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TUNNEL_L2TP = 6, // contain layers: IPv4 + UDP + L2TP
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// contain layers: IPv6 + UDP + L2TP
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TUNNEL_TEREDO = 7, // contain layers: IPv4 + UDP, (next inner layer must be IPv6)
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};
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#define MAX_LAYERS_PER_TUNNEL 3
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struct tunnel
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{
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enum tunnel_type type;
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int layer_count;
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const struct layer *layers[MAX_LAYERS_PER_TUNNEL];
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};
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int packet_get_tunnel_count(const struct packet *pkt);
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// return 0: success
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// return -1: failed
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int packet_get_tunnel_by_idx(const struct packet *pkt, int idx, struct tunnel *out);
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#ifdef __cplusplus
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}
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#endif
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