46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
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#ifndef _TCP_REASSEMBLY_H
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#define _TCP_REASSEMBLY_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 "log.h"
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#include <stdint.h>
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#define TCP_REASSEMBLE_DEBUG(format, ...) LOG_DEBUG("tcp_reassembly", format, ##__VA_ARGS__)
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#define TCP_REASSEMBLE_ERROR(format, ...) LOG_ERROR("tcp_reassembly", format, ##__VA_ARGS__)
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struct tcp_reassembly_stat
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{
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uint64_t packets; // current packets
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uint64_t bytes; // current bytes
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uint64_t tcp_segement_timout; // total tcp segment timeout
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};
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/*
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* If retransmission or overlap occurs, the old data packet may have been consumed by the upper-layer plug-in,
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* so the old data packet takes priority and the new data packet will be bypassed.
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*/
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struct tcp_reassembly *tcp_reassembly_new(bool enable, uint32_t max_timeout, uint32_t max_packets, uint32_t max_bytes);
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void tcp_reassembly_init(struct tcp_reassembly *assembler, uint32_t c2s_init_seq, uint32_t s2c_init_seq);
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void tcp_reassembly_free(struct tcp_reassembly *assembler);
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void tcp_reassembly_expire(struct tcp_reassembly *assembler, uint64_t now);
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// direction: 1 C2S; 2: S2C
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void tcp_reassembly_update(struct tcp_reassembly *assembler, int direction, uint32_t offset, const char *payload, uint32_t len, uint64_t now);
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const char *tcp_reassembly_peek(struct tcp_reassembly *assembler, int direction, uint32_t *len);
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void tcp_reassembly_consume(struct tcp_reassembly *assembler, int direction, uint32_t len);
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struct tcp_reassembly_stat *tcp_reassembly_get_stat(struct tcp_reassembly *assembler);
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#ifdef __cpluscplus
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}
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#endif
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#endif
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