98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
#ifndef _DATA_PACKET_H
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#define _DATA_PACKET_H
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#ifdef __cpluscplus
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extern "C"
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{
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#endif
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#include <stdint.h>
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enum layer_type
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{
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// 数据链路层
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LAYER_TYPE_ETHER = 1 << 0,
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LAYER_TYPE_PPP = 1 << 1,
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LAYER_TYPE_HDLC = 1 << 2,
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LAYER_TYPE_L2 = (LAYER_TYPE_ETHER | LAYER_TYPE_PPP | LAYER_TYPE_HDLC),
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// 数据链路层 -- 隧道
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LAYER_TYPE_VLAN = 1 << 3,
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LAYER_TYPE_PPPOE = 1 << 4,
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LAYER_TYPE_MPLS = 1 << 5,
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LAYER_TYPE_L2_TUN = (LAYER_TYPE_VLAN | LAYER_TYPE_PPPOE | LAYER_TYPE_MPLS),
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// 网络层
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LAYER_TYPE_IPV4 = 1 << 6,
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LAYER_TYPE_IPV6 = 1 << 7,
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LAYER_TYPE_L3 = (LAYER_TYPE_IPV4 | LAYER_TYPE_IPV6),
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// 网络层 -- 隧道
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// 传输层
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LAYER_TYPE_UDP = 1 << 8,
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LAYER_TYPE_TCP = 1 << 9,
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LAYER_TYPE_L4 = (LAYER_TYPE_UDP | LAYER_TYPE_TCP),
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// 传输层 -- 隧道
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LAYER_TYPE_G_VXLAN = 1 << 10,
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LAYER_TYPE_GTPV1_U = 1 << 11,
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// ALL
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LAYER_TYPE_ALL = (LAYER_TYPE_L2 | LAYER_TYPE_L2_TUN | LAYER_TYPE_L3 | LAYER_TYPE_L4 | LAYER_TYPE_G_VXLAN | LAYER_TYPE_GTPV1_U),
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// UNKNOWN
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LAYER_TYPE_UNKNOWN,
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};
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enum ldbc_method
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{
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LDBC_METHOD_HASH_INT_IP = 1,
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LDBC_METHOD_HASH_EXT_IP = 2,
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LDBC_METHOD_HASH_INT_IP_AND_EXT_IP = 3,
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LDBC_METHOD_HASH_INNERMOST_INT_IP = 4,
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LDBC_METHOD_HASH_INNERMOST_EXT_IP = 5,
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};
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struct layer_result
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{
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uint16_t offset;
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enum layer_type type;
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};
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struct layer_results
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{
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struct layer_result layers[16];
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uint16_t layers_used;
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uint16_t layers_size;
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};
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struct data_packet
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{
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struct layer_results results;
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const void *data_ptr;
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uint64_t trace_id;
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};
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// return most inner payload
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const void *data_packet_parse(struct data_packet *handler, const void *data, size_t length, uint64_t trace_id);
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// return 0 : success
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// return -1 : error
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int data_packet_get_innermost_tuple4(struct data_packet *handler, struct addr_tuple4 *addr);
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int data_packet_get_outermost_tuple4(struct data_packet *handler, struct addr_tuple4 *addr);
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// return 0 : success
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// return -1 : error
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int data_packet_get_innermost_address(struct data_packet *handler, struct addr_tuple4 *addr);
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int data_packet_get_outermost_address(struct data_packet *handler, struct addr_tuple4 *addr);
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uint64_t data_packet_get_hash(struct data_packet *handler, enum ldbc_method method, int dir_is_i2e);
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#ifdef __cpluscplus
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}
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#endif
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#endif
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