X-Git-Url: http://git.meshlink.io/?p=utcp;a=blobdiff_plain;f=utcp_priv.h;fp=utcp_priv.h;h=24f4158318ddccd8a4a586b72420fbe87de172c2;hp=3a119f16cf60a878e327e0b9ebe49efe3aff2f62;hb=e7e607d6d1b4e53f6f2a6094c02240e4fd8f59d4;hpb=1c136554d0e3c3fb89106c349e7613869d63ca2c

diff --git a/utcp_priv.h b/utcp_priv.h
index 3a119f1..24f4158 100644
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -39,6 +39,9 @@
 #define DEFAULT_MTU 1000
 
 #define DEFAULT_USER_TIMEOUT 60 // s
+#define CLOCK_GRANULARITY 1000 // us
+#define START_RTO 1000000 // us
+#define MAX_RTO 3000000 // us
 
 struct hdr {
 	uint16_t src; // Source port
@@ -129,6 +132,8 @@ struct utcp_connection {
 
 	struct timeval conn_timeout;
 	struct timeval rtrx_timeout;
+	struct timeval rtt_start;
+	uint32_t rtt_seq;
 
 	// Buffers
 
@@ -159,7 +164,13 @@ struct utcp {
 	// Global socket options
 
 	uint16_t mtu;
-	int timeout;
+	int timeout; // s
+
+	// RTT variables
+
+	uint32_t srtt; // us
+	uint32_t rttvar; // us
+	uint32_t rto; // us
 
 	// Connection management