Horizontal (nSessions) scaling draft

[vpp.git] / src / vnet / tcp / tcp.h

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index e839871..37b10fd 100644 (file)
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -28,6 +28,7 @@
 #define THZ (u32) (1/TCP_TICK)         /**< TCP tick frequency */
 #define TCP_TSTAMP_RESOLUTION TCP_TICK /**< Time stamp resolution */
 #define TCP_PAWS_IDLE 24 * 24 * 60 * 60 * THZ /**< 24 days */
+#define TCP_FIB_RECHECK_PERIOD 1 * THZ /**< Recheck every 1s */
 #define TCP_MAX_OPTION_SPACE 40
 
 #define TCP_DUPACK_THRESHOLD   3
@@ -256,6 +257,7 @@ typedef struct _tcp_connection
 
   u16 mss;             /**< Our max seg size that includes options */
   u32 limited_transmit;        /**< snd_nxt when limited transmit starts */
+  u32 last_fib_check;  /**< Last time we checked fib route for peer */
 } tcp_connection_t;
 
 struct _tcp_cc_algorithm
@@ -346,6 +348,16 @@ typedef struct _tcp_main
   /* Flag that indicates if stack is on or off */
   u8 is_enabled;
 
+  /** Number of preallocated connections */
+  u32 preallocated_connections;
+  u32 preallocated_half_open_connections;
+
+  /** Vectors of src addresses. Optional unless one needs > 63K active-opens */
+  ip4_address_t *ip4_src_addresses;
+  u32 last_v4_address_rotor;
+  u32 last_v6_address_rotor;
+  ip6_address_t *ip6_src_addresses;
+
   /* convenience */
   vlib_main_t *vlib_main;
   vnet_main_t *vnet_main;
@@ -528,6 +540,8 @@ void tcp_cc_init_congestion (tcp_connection_t * tc);
 int tcp_cc_recover (tcp_connection_t * tc);
 void tcp_cc_fastrecovery_exit (tcp_connection_t * tc);
 
+fib_node_index_t tcp_lookup_rmt_in_fib (tcp_connection_t * tc);
+
 /* Made public for unit testing only */
 void tcp_update_sack_list (tcp_connection_t * tc, u32 start, u32 end);
 
@@ -565,6 +579,7 @@ tcp_connection_force_ack (tcp_connection_t * tc, vlib_buffer_t * b)
 always_inline void
 tcp_timer_set (tcp_connection_t * tc, u8 timer_id, u32 interval)
 {
+  ASSERT (tc->c_thread_index == vlib_get_thread_index ());
   tc->timers[timer_id]
     = tw_timer_start_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
                                   tc->c_c_index, timer_id, interval);
@@ -573,6 +588,7 @@ tcp_timer_set (tcp_connection_t * tc, u8 timer_id, u32 interval)
 always_inline void
 tcp_timer_reset (tcp_connection_t * tc, u8 timer_id)
 {
+  ASSERT (tc->c_thread_index == vlib_get_thread_index ());
   if (tc->timers[timer_id] == TCP_TIMER_HANDLE_INVALID)
     return;
 
@@ -584,6 +600,7 @@ tcp_timer_reset (tcp_connection_t * tc, u8 timer_id)
 always_inline void
 tcp_timer_update (tcp_connection_t * tc, u8 timer_id, u32 interval)
 {
+  ASSERT (tc->c_thread_index == vlib_get_thread_index ());
   if (tc->timers[timer_id] != TCP_TIMER_HANDLE_INVALID)
     tw_timer_stop_16t_2w_512sl (&tcp_main.timer_wheels[tc->c_thread_index],
                                tc->timers[timer_id]);