124 lines
4.5 KiB
C
124 lines
4.5 KiB
C
#ifndef _SESSION_MANAGER_H
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#define _SESSION_MANAGER_H
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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 "session_priv.h"
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#include "log.h"
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#define SESSION_LOG_ERROR(format, ...) LOG_ERROR("session", format, ##__VA_ARGS__)
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#define SESSION_LOG_DEBUG(format, ...) LOG_DEBUG("session", format, ##__VA_ARGS__)
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struct session_manager_options
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{
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// max session number
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uint64_t max_tcp_session_num;
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uint64_t max_udp_session_num;
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// session overload
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uint8_t tcp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
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uint8_t udp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
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// TCP timeout
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uint64_t tcp_init_timeout; // range: [1, 60000] (ms)
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uint64_t tcp_handshake_timeout; // range: [1, 60000] (ms)
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uint64_t tcp_data_timeout; // range: [1, 15999999000] (ms)
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uint64_t tcp_half_closed_timeout; // range: [1, 604800000] (ms)
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uint64_t tcp_time_wait_timeout; // range: [1, 600000] (ms)
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uint64_t tcp_discard_timeout; // range: [1, 15999999000] (ms)
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uint64_t tcp_unverified_rst_timeout; // range: [1, 600000] (ms)
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// UDP timeout
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uint64_t udp_data_timeout; // range: [1, 15999999000] (ms)
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uint64_t udp_discard_timeout; // range: [1, 15999999000] (ms)
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// duplicate packet filter
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uint8_t duplicated_packet_filter_enable;
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uint32_t duplicated_packet_filter_capacity; // range: [1, 4294967295]
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uint32_t duplicated_packet_filter_timeout; // range: [1, 60000] (ms)
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double duplicated_packet_filter_error_rate; // range: [0.0, 1.0]
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// evicted session filter
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uint8_t evicted_session_filter_enable;
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uint32_t evicted_session_filter_capacity; // range: [1, 4294967295]
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uint32_t evicted_session_filter_timeout; // range: [1, 60000] (ms)
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double evicted_session_filter_error_rate; // range: [0.0, 1.0]
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// TCP reassembly
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uint8_t tcp_reassembly_enable;
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uint32_t tcp_reassembly_max_timeout; // range: [1, 60000] (ms)
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uint32_t tcp_reassembly_max_segments; // range: [2, 512]
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};
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struct session_manager_stat
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{
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// TCP session
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uint64_t total_nr_tcp_sess_used;
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uint64_t curr_nr_tcp_sess_used;
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uint64_t curr_nr_tcp_sess_opening;
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uint64_t curr_nr_tcp_sess_active;
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uint64_t curr_nr_tcp_sess_closing;
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uint64_t curr_nr_tcp_sess_discard;
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uint64_t curr_nr_tcp_sess_closed;
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// UDP session
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uint64_t total_nr_udp_sess_used;
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uint64_t curr_nr_udp_sess_used;
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uint64_t curr_nr_udp_sess_opening;
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uint64_t curr_nr_udp_sess_active;
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uint64_t curr_nr_udp_sess_closing;
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uint64_t curr_nr_udp_sess_discard;
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uint64_t curr_nr_udp_sess_closed;
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// Evicted session
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uint64_t nr_tcp_sess_evicted; // sum
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uint64_t nr_udp_sess_evicted; // sum
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// Packet
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uint64_t nr_udp_pkts_nospace_bypass; // sum
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uint64_t nr_tcp_pkts_nospace_bypass; // sum
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uint64_t nr_tcp_pkts_nosess_bypass; // sum
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uint64_t nr_tcp_pkts_duped_bypass; // sum
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uint64_t nr_udp_pkts_duped_bypass; // sum
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uint64_t nr_udp_pkts_evctd_bypass; // sum
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// TCP segments
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uint64_t nr_tcp_seg_received; // sum
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uint64_t nr_tcp_seg_expired; // sum
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uint64_t nr_tcp_seg_retransmit; // sum
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uint64_t nr_tcp_seg_overlap; // sum
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uint64_t nr_tcp_seg_no_space; // sum
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uint64_t nr_tcp_seg_inorder; // sum
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uint64_t nr_tcp_seg_reorded; // sum
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uint64_t nr_tcp_seg_buffered; // sum
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uint64_t nr_tcp_seg_released; // sum
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};
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struct session_manager;
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struct session_manager *session_manager_new(struct session_manager_options *opts, uint64_t now);
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void session_manager_free(struct session_manager *mgr);
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struct session *session_manager_new_session(struct session_manager *mgr, const struct packet *pkt, uint64_t now);
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void session_manager_free_session(struct session_manager *mgr, struct session *sess);
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struct session *session_manager_lookup_session(struct session_manager *mgr, const struct packet *pkt);
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int session_manager_update_session(struct session_manager *mgr, struct session *sess, const struct packet *pkt, uint64_t now);
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// return session need free by session_manager_free_session()
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struct session *session_manager_get_expired_session(struct session_manager *mgr, uint64_t now);
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struct session *session_manager_get_evicted_session(struct session_manager *mgr);
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// return 0: have already timeout session
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// return >0: next expire interval
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uint64_t session_manager_get_expire_interval(struct session_manager *mgr);
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struct session_manager_stat *session_manager_stat(struct session_manager *mgr);
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#ifdef __cplusplus
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}
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#endif
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#endif
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