tcp: better randomize iss

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

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index a62e01d..dca0451 100644 (file)
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -74,7 +74,8 @@ format_function_t format_tcp_rcv_sacks;
   _(KEEP, "KEEP")                       \
   _(WAITCLOSE, "WAIT CLOSE")            \
   _(RETRANSMIT_SYN, "RETRANSMIT SYN")   \
-  _(ESTABLISH, "ESTABLISH")
+  _(ESTABLISH, "ESTABLISH")            \
+  _(ESTABLISH_AO, "ESTABLISH_AO")      \
 
 typedef enum _tcp_timers
 {
@@ -102,7 +103,8 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler;
 #define TCP_2MSL_TIME           300    /* 30s */
 #define TCP_CLOSEWAIT_TIME     20      /* 2s */
 #define TCP_TIMEWAIT_TIME      100     /* 10s */
-#define TCP_CLEANUP_TIME       10      /* 1s Time to wait before cleanup */
+#define TCP_FINWAIT1_TIME      600     /* 60s */
+#define TCP_CLEANUP_TIME       1       /* 0.1s */
 #define TCP_TIMER_PERSIST_MIN  2       /* 0.2s */
 
 #define TCP_RTO_MAX 60 * THZ   /* Min max RTO (60s) as per RFC6298 */
@@ -124,7 +126,7 @@ extern timer_expiration_handler tcp_timer_retransmit_syn_handler;
   _(FRXT_PENDING, "Fast-retransmit pending")   \
   _(FRXT_FIRST, "Fast-retransmit first again") \
   _(DEQ_PENDING, "Pending dequeue acked")      \
-  _(PSH_PENDING, "Pending psh packet")         \
+  _(PSH_PENDING, "PSH pending")                        \
 
 typedef enum _tcp_connection_flag_bits
 {
@@ -435,6 +437,12 @@ typedef struct tcp_worker_ctx_
 
 } tcp_worker_ctx_t;
 
+typedef struct tcp_iss_seed_
+{
+  u64 first;
+  u64 second;
+} tcp_iss_seed_t;
+
 typedef struct _tcp_main
 {
   /* Per-worker thread tcp connection pools */
@@ -462,6 +470,9 @@ typedef struct _tcp_main
   /** vlib buffer size */
   u32 bytes_per_buffer;
 
+  /* Seed used to generate random iss */
+  tcp_iss_seed_t iss_seed;
+
   /*
    * Configuration
    */
@@ -561,6 +572,13 @@ tcp_get_connection_from_transport (transport_connection_t * tconn)
   return (tcp_connection_t *) tconn;
 }
 
+always_inline void
+tcp_connection_set_state (tcp_connection_t * tc, tcp_state_t state)
+{
+  tc->state = state;
+  TCP_EVT_DBG (TCP_EVT_STATE_CHANGE, tc);
+}
+
 void tcp_connection_close (tcp_connection_t * tc);
 void tcp_connection_cleanup (tcp_connection_t * tc);
 void tcp_connection_del (tcp_connection_t * tc);