X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=utcp_priv.h;h=1cf9e8743da561020be4165e533b553778798639;hb=bf55733700d946f678947a6caaa782b56669a3f1;hp=24f4158318ddccd8a4a586b72420fbe87de172c2;hpb=e7e607d6d1b4e53f6f2a6094c02240e4fd8f59d4;p=utcp

diff --git a/utcp_priv.h b/utcp_priv.h
index 24f4158..1cf9e87 100644
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -30,6 +30,11 @@
 #define FIN 4
 #define RST 8
 
+#define AUX_INIT 1
+#define AUX_FRAME 2
+#define AUX_SAK 3
+#define AUX_TIMESTAMP 4
+
 #define NSACKS 4
 #define DEFAULT_SNDBUFSIZE 4096
 #define DEFAULT_MAXSNDBUFSIZE 131072
@@ -38,10 +43,11 @@
 
 #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
+static const long USEC_PER_SEC = 1000000;
+static const long NSEC_PER_SEC = 1000000000;
+static const int DEFAULT_USER_TIMEOUT = 60; // sec
+static const long START_RTO = 1 * USEC_PER_SEC; // usec
+static const long MAX_RTO  = 3 * USEC_PER_SEC; // usec
 
 struct hdr {
 	uint16_t src; // Source port
@@ -83,6 +89,7 @@ static const char *strstate[] __attribute__((unused)) = {
 
 struct buffer {
 	char *data;
+	uint32_t offset;
 	uint32_t used;
 	uint32_t size;
 	uint32_t maxsize;
@@ -96,6 +103,7 @@ struct sack {
 struct utcp_connection {
 	void *priv;
 	struct utcp *utcp;
+	uint32_t flags;
 
 	bool reapable;
 
@@ -118,11 +126,11 @@ struct utcp_connection {
 
 		uint32_t last;
 		uint32_t cwnd;
+		uint32_t ssthresh;
 	} snd;
 
 	struct {
 		uint32_t nxt;
-		uint32_t wnd;
 		uint32_t irs;
 	} rcv;
 
@@ -130,9 +138,9 @@ struct utcp_connection {
 
 	// Timers
 
-	struct timeval conn_timeout;
-	struct timeval rtrx_timeout;
-	struct timeval rtt_start;
+	struct timespec conn_timeout;
+	struct timespec rtrx_timeout;
+	struct timespec rtt_start;
 	uint32_t rtt_seq;
 
 	// Buffers
@@ -145,10 +153,11 @@ struct utcp_connection {
 
 	bool nodelay;
 	bool keepalive;
+	bool shut_wr;
 
 	// Congestion avoidance state
 
-	struct timeval tlast;
+	struct timespec tlast;
 	uint64_t bandwidth;
 };
 
@@ -161,16 +170,21 @@ struct utcp {
 	utcp_pre_accept_t pre_accept;
 	utcp_send_t send;
 
+	// Packet buffer
+
+	void *pkt;
+
 	// Global socket options
 
-	uint16_t mtu;
-	int timeout; // s
+	uint16_t mtu; // The maximum size of a UTCP packet, including headers.
+	uint16_t mss; // The maximum size of the payload of a UTCP packet.
+	int timeout; // sec
 
 	// RTT variables
 
-	uint32_t srtt; // us
-	uint32_t rttvar; // us
-	uint32_t rto; // us
+	uint32_t srtt; // usec
+	uint32_t rttvar; // usec
+	uint32_t rto; // usec
 
 	// Connection management