X-Git-Url: http://git.meshlink.io/?p=utcp;a=blobdiff_plain;f=utcp_priv.h;h=197fd2685a32416f46bc87652ddae5bb27664553;hp=24f4158318ddccd8a4a586b72420fbe87de172c2;hb=HEAD;hpb=e7e607d6d1b4e53f6f2a6094c02240e4fd8f59d4

diff --git a/utcp_priv.h b/utcp_priv.h
index 24f4158..197fd26 100644
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -29,6 +29,12 @@
 #define ACK 2
 #define FIN 4
 #define RST 8
+#define MF 16
+
+#define AUX_INIT 1
+#define AUX_FRAME 2
+#define AUX_SAK 3
+#define AUX_TIMESTAMP 4
 
 #define NSACKS 4
 #define DEFAULT_SNDBUFSIZE 4096
@@ -36,12 +42,14 @@
 #define DEFAULT_RCVBUFSIZE 0
 #define DEFAULT_MAXRCVBUFSIZE 131072
 
+#define MAX_UNRELIABLE_SIZE 65536
 #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
+#define USEC_PER_SEC 1000000L
+#define NSEC_PER_SEC 1000000000L
+#define DEFAULT_USER_TIMEOUT 60
+#define START_RTO (1 * USEC_PER_SEC)
+#define MAX_RTO (3 * USEC_PER_SEC)
 
 struct hdr {
 	uint16_t src; // Source port
@@ -83,6 +91,7 @@ static const char *strstate[] __attribute__((unused)) = {
 
 struct buffer {
 	char *data;
+	uint32_t offset;
 	uint32_t used;
 	uint32_t size;
 	uint32_t maxsize;
@@ -96,8 +105,10 @@ struct sack {
 struct utcp_connection {
 	void *priv;
 	struct utcp *utcp;
+	uint32_t flags;
 
 	bool reapable;
+	bool do_poll;
 
 	// Callbacks
 
@@ -118,11 +129,11 @@ struct utcp_connection {
 
 		uint32_t last;
 		uint32_t cwnd;
+		uint32_t ssthresh;
 	} snd;
 
 	struct {
 		uint32_t nxt;
-		uint32_t wnd;
 		uint32_t irs;
 	} rcv;
 
@@ -130,13 +141,20 @@ 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;
 
+	// RTT variables
+
+	uint32_t srtt; // usec
+	uint32_t rttvar; // usec
+	uint32_t rto; // usec
+
 	// Buffers
 
+	uint32_t prev_free;
 	struct buffer sndbuf;
 	struct buffer rcvbuf;
 	struct sack sacks[NSACKS];
@@ -145,10 +163,11 @@ struct utcp_connection {
 
 	bool nodelay;
 	bool keepalive;
+	bool shut_wr;
 
 	// Congestion avoidance state
 
-	struct timeval tlast;
+	struct timespec tlast;
 	uint64_t bandwidth;
 };
 
@@ -159,18 +178,18 @@ struct utcp {
 
 	utcp_accept_t accept;
 	utcp_pre_accept_t pre_accept;
+	utcp_retransmit_t retransmit;
 	utcp_send_t send;
 
-	// Global socket options
+	// Packet buffer
 
-	uint16_t mtu;
-	int timeout; // s
+	void *pkt;
 
-	// RTT variables
+	// Global socket options
 
-	uint32_t srtt; // us
-	uint32_t rttvar; // us
-	uint32_t rto; // us
+	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
 
 	// Connection management