tbf.h

   1 #ifndef __TBF_H__
   2 #define __TBF_H__
   3
   4 // Need a time interval.
   5
   6 #define TBF_MAX_QUEUE   2       // Maximum of 2 queued packet per
   7 #define TBF_MAX_SIZE    3000    // Maxiumum queued packet size is 2048.
   8
   9 #define TBF_MAX_CREDIT  6000    // Maximum 6000 bytes of credit.
  10 #define TBF_RATE        360     // 360 bytes per 1/10th of a second.
  11
  12 typedef struct {
  13         int             credit;
  14         int             lasttime;
  15         int             queued;
  16         int             oldest; // Position of packet in the ring buffer.
  17         sessionidt      sid;    // associated session ID.
  18         int             max_credit; // Maximum amount of credit available (burst size).
  19         int             rate;   // How many bytes of credit per second we get? (sustained rate)
  20         void            (*send)(sessionidt s, u8 *, int);       // Routine to actually send out the data.
  21         int             prev;   // Timer chain position.
  22         int             next;   // Timer chain position.
  23
  24         u32     b_queued;       // Total bytes sent through this TBF
  25         u32     b_sent;         // Total bytes sucessfully made it to the network.
  26         u32     p_queued;       // ditto packets.
  27         u32     p_sent;         // ditto packets.
  28         u32     b_dropped;      // Total bytes dropped.
  29         u32     p_dropped;      // Total packets dropped.
  30         u32     p_delayed;      // Total packets not sent immediately.
  31
  32         int             sizes[TBF_MAX_QUEUE];
  33         char            packets[TBF_MAX_QUEUE][TBF_MAX_SIZE];
  34 } tbft;
  35
  36 void init_tbf(int num_tbfs);
  37 int tbf_run_timer(void);
  38 int tbf_queue_packet(int tbf_id, char * data, int size);
  39 int new_tbf(int sid, int max_credit, int rate, void (*f)(sessionidt, u8 *, int));
  40 int free_tbf(int tid);
  41 void fsck_tbfs(void);
  42
  43 int cmd_show_tbf(struct cli_def *cli, char *command, char **argv, int argc);
  44
  45 #endif /* __TBF_H__ */