add length checks and comments to proxy LCP parsing

[l2tpns.git] / tbf.h

diff --git a/tbf.h b/tbf.h
index 3d98c1b..bad2c37 100644 (file)
--- a/tbf.h
+++ b/tbf.h
@@ -1,7 +1,39 @@
 #ifndef __TBF_H__
 #define __TBF_H__
 
-void init_tbf(void);
+// Need a time interval.
+
+#define TBF_MAX_QUEUE   2       // Maximum of 2 queued packet per
+#define TBF_MAX_SIZE    3000    // Maxiumum queued packet size is 2048.
+
+#define TBF_MAX_CREDIT  6000    // Maximum 6000 bytes of credit.
+#define TBF_RATE        360     // 360 bytes per 1/10th of a second.
+
+typedef struct {
+        int             credit;
+        int             lasttime;
+        int             queued;
+        int             oldest; // Position of packet in the ring buffer.
+        sessionidt      sid;    // associated session ID.
+        int             max_credit; // Maximum amount of credit available (burst size).
+        int             rate;   // How many bytes of credit per second we get? (sustained rate)
+        void            (*send)(sessionidt s, u8 *, int);       // Routine to actually send out the data.
+        int             prev;   // Timer chain position.
+        int             next;   // Timer chain position.
+
+        u32     b_queued;       // Total bytes sent through this TBF
+        u32     b_sent;         // Total bytes sucessfully made it to the network.
+        u32     p_queued;       // ditto packets.
+        u32     p_sent;         // ditto packets.
+        u32     b_dropped;      // Total bytes dropped.
+        u32     p_dropped;      // Total packets dropped.
+        u32     p_delayed;      // Total packets not sent immediately.
+
+        int             sizes[TBF_MAX_QUEUE];
+        char            packets[TBF_MAX_QUEUE][TBF_MAX_SIZE];
+} tbft;
+
+void init_tbf(int num_tbfs);
 int tbf_run_timer(void);
 int tbf_queue_packet(int tbf_id, char * data, int size);
 int new_tbf(int sid, int max_credit, int rate, void (*f)(sessionidt, u8 *, int));