Don't call the poll callback unnecessarily.

[utcp] / utcp_priv.h

diff --git a/utcp_priv.h b/utcp_priv.h
index 5ed0344a45fce589963253eafe5ec11bbcdfc937..0b2efe4e1efd9c8e81b5981554f29b8a8bc8f6cd 100644 (file)
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -43,11 +43,11 @@
 
 #define DEFAULT_MTU 1000
 
-#define USEC_PER_SEC 1000000
-#define DEFAULT_USER_TIMEOUT 60 // sec
-#define CLOCK_GRANULARITY 1000 // usec
-#define START_RTO 1000000 // usec
-#define MAX_RTO 3000000 // usec
+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
@@ -89,6 +89,7 @@ static const char *strstate[] __attribute__((unused)) = {
 
 struct buffer {
        char *data;
+       uint32_t offset;
        uint32_t used;
        uint32_t size;
        uint32_t maxsize;
@@ -105,6 +106,7 @@ struct utcp_connection {
        uint32_t flags;
 
        bool reapable;
+       bool do_poll;
 
        // Callbacks
 
@@ -137,13 +139,14 @@ 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
 
+       uint32_t prev_free;
        struct buffer sndbuf;
        struct buffer rcvbuf;
        struct sack sacks[NSACKS];
@@ -156,7 +159,7 @@ struct utcp_connection {
 
        // Congestion avoidance state
 
-       struct timeval tlast;
+       struct timespec tlast;
        uint64_t bandwidth;
 };
 
@@ -169,9 +172,14 @@ struct utcp {
        utcp_pre_accept_t pre_accept;
        utcp_send_t send;
 
+       // Packet buffer
+
+       void *pkt;
+
        // Global socket options
 
-       uint16_t mtu;
+       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