Add a receive buffer.

[utcp] / utcp_priv.h

diff --git a/utcp_priv.h b/utcp_priv.h
index b9979539465a7ac7e5cbae1b9e5c3258fc8a445a..69f1b0da5347371649da4dbaa92973cfed0617eb 100644 (file)
--- a/utcp_priv.h
+++ b/utcp_priv.h
@@ -30,8 +30,11 @@
 #define FIN 4
 #define RST 8
 
+#define NSACKS 4
 #define DEFAULT_SNDBUFSIZE 4096
 #define DEFAULT_MAXSNDBUFSIZE 131072
+#define DEFAULT_RCVBUFSIZE 0
+#define DEFAULT_MAXRCVBUFSIZE 131072
 
 struct hdr {
        uint16_t src; // Source port
@@ -78,6 +81,11 @@ struct buffer {
        uint32_t maxsize;
 };
 
+struct sack {
+       uint32_t offset;
+       uint32_t len;
+};
+
 struct utcp_connection {
        void *priv;
        struct utcp *utcp;
@@ -118,9 +126,11 @@ struct utcp_connection {
        struct timeval conn_timeout;
        struct timeval rtrx_timeout;
 
-       // Send buffer
+       // Buffers
 
        struct buffer sndbuf;
+       struct buffer rcvbuf;
+       struct sack sacks[NSACKS];
 
        // Per-socket options