81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
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#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 "list.h"
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#include "tuple.h"
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#include "uthash.h"
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#include "timeout.h"
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#include "packet_def.h"
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#include "stellar/session.h"
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#include "tcp_reassembly.h"
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#define EX_DATA_MAX_COUNT 4
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// output format: "${src_addr}:${src_port}-${dst_addr}:${dst_port}-${ip_proto}-${domain}"
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// output max len: (46 + 1 + 5) + 1 + (46 + 1 + 5) + 1 + 1 + 1 + 20 = 129
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#define TUPLE6_STR_SIZE 130
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struct tcp_half
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{
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struct tcp_reassembly *assembler;
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struct tcp_segment in_order; // current packet in order segment
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uint32_t in_order_ref; // reference count of current packet in order segment
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uint32_t seq; // current packet sequence number
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uint32_t ack; // current packet ack number
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uint16_t len; // current packet payload length
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uint8_t flags; // current packet flags
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uint32_t isn; // current direction initial sequence number
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uint8_t history; // current direction received flags
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};
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/*
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* sizeof(struct session) > 1024 bytes
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* max thread number = 128
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* per thread max tcp session number = 50000
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* per thread max udp session number = 50000
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*
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* session memory usage = 128 * (50000 + 50000) * 1024 = 13107200000 bytes = 12.2 GB
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*/
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struct session
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{
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uint64_t id;
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uint64_t stats[MAX_FLOW_DIRECTION][MAX_STAT];
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uint64_t timestamps[MAX_TIMESTAMP]; // realtime seconds
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struct tcp_half tcp_halfs[MAX_FLOW_DIRECTION];
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struct timeout timeout;
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struct list_head lru;
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struct list_head free;
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struct list_head evicte;
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UT_hash_handle hh1;
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UT_hash_handle hh2;
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UT_hash_handle hh3;
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struct tuple6 tuple;
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char tuple_str[TUPLE6_STR_SIZE];
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struct sids sids[MAX_FLOW_DIRECTION];
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struct route_ctx route_ctx[MAX_FLOW_DIRECTION];
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const struct packet *first_pkt[MAX_FLOW_DIRECTION];
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const struct packet *curr_pkt;
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void *ex_data[EX_DATA_MAX_COUNT];
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void *user_data;
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int is_symmetric;
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int dup;
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enum session_direction sess_dir;
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enum flow_direction tuple_dir;
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enum flow_direction flow_dir;
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enum session_type type;
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enum session_state state;
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enum closing_reason reason;
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struct session_manager *mgr;
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struct session_manager_stat *mgr_stat;
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};
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#ifdef __cplusplus
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}
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#endif
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