optimize session manager config

infra/session_manager/session_manager.h

@@ -10,46 +10,54 @@ extern "C"
 
 struct session_manager_config
 {
-    // max session number
-    uint64_t max_tcp_session_num;
-    uint64_t max_udp_session_num;
+    uint64_t tcp_session_max;
+    uint64_t udp_session_max;
 
-    // session overload
-    uint8_t tcp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
-    uint8_t udp_overload_evict_old_sess; // 1: evict old session, 0: bypass new session
+    uint8_t evict_old_on_tcp_table_limit; // range: [0, 1]
+    uint8_t evict_old_on_udp_table_limit; // range: [0, 1]
 
-    // TCP timeout
-    uint64_t tcp_init_timeout_ms;           // range: [1, 60000] (ms)
-    uint64_t tcp_handshake_timeout_ms;      // range: [1, 60000] (ms)
-    uint64_t tcp_data_timeout_ms;           // range: [1, 15999999000] (ms)
-    uint64_t tcp_half_closed_timeout_ms;    // range: [1, 604800000] (ms)
-    uint64_t tcp_time_wait_timeout_ms;      // range: [1, 600000] (ms)
-    uint64_t tcp_discard_timeout_ms;        // range: [1, 15999999000] (ms)
-    uint64_t tcp_unverified_rst_timeout_ms; // range: [1, 600000] (ms)
-    // UDP timeout
-    uint64_t udp_data_timeout_ms;    // range: [1, 15999999000] (ms)
-    uint64_t udp_discard_timeout_ms; // range: [1, 15999999000] (ms)
+    uint64_t expire_period_ms; // range: [0, 60000] (ms)
+    uint64_t expire_batch_max; // range: [1, 1024]
 
-    // limit
-    uint64_t session_expire_polling_interval_ms; // range: [0, 60000] (ms)
-    uint64_t session_expire_polling_limit;       // range: [1, 1024]
+    struct
+    {
+        uint64_t init;            // range: [1, 60000] (ms)
+        uint64_t handshake;       // range: [1, 60000] (ms)
+        uint64_t data;            // range: [1, 15999999000] (ms)
+        uint64_t half_closed;     // range: [1, 604800000] (ms)
+        uint64_t time_wait;       // range: [1, 600000] (ms)
+        uint64_t discard_default; // range: [1, 15999999000] (ms)
+        uint64_t unverified_rst;  // range: [1, 600000] (ms)
+    } tcp_timeout_ms;
 
-    // duplicate packet filter
-    uint8_t duplicated_packet_filter_enable;
-    uint32_t duplicated_packet_filter_capacity;   // range: [1, 4294967295]
-    uint32_t duplicated_packet_filter_timeout_ms; // range: [1, 60000] (ms)
-    double duplicated_packet_filter_error_rate;   // range: [0.0, 1.0]
+    struct
+    {
+        uint64_t data;            // range: [1, 15999999000] (ms)
+        uint64_t discard_default; // range: [1, 15999999000] (ms)
+    } udp_timeout_ms;
 
-    // evicted session filter
-    uint8_t evicted_session_filter_enable;
-    uint32_t evicted_session_filter_capacity;   // range: [1, 4294967295]
-    uint32_t evicted_session_filter_timeout_ms; // range: [1, 60000] (ms)
-    double evicted_session_filter_error_rate;   // range: [0.0, 1.0]
+    struct
+    {
+        uint8_t enable;          // range: [0, 1]
+        uint32_t capacity;       // range: [1, 4294967295]
+        uint32_t time_window_ms; // range: [1, 60000] (ms)
+        double error_rate;       // range: [0.0, 1.0]
+    } duplicated_packet_bloom_filter;
 
-    // TCP reassembly
-    uint8_t tcp_reassembly_enable;
-    uint32_t tcp_reassembly_max_timeout_ms; // range: [1, 60000] (ms)
-    uint32_t tcp_reassembly_max_segments;   // range: [2, 512]
+    struct
+    {
+        uint8_t enable;          // range: [0, 1]
+        uint32_t capacity;       // range: [1, 4294967295]
+        uint32_t time_window_ms; // range: [1, 60000] (ms)
+        double error_rate;       // range: [0.0, 1.0]
+    } evicted_session_bloom_filter;
+
+    struct
+    {
+        uint8_t enable;                 // range: [0, 1]
+        uint32_t timeout_ms;            // range: [1, 60000] (ms)
+        uint32_t buffered_segments_max; // range: [2, 512]
+    } tcp_reassembly;
 };
 
 struct __attribute__((aligned(64))) session_manager_stat