1 | __#ifndef _LINUX_TFRC_H___ |

2 | __#define _LINUX_TFRC_H___ |

3 | */** |

4 | * * TFRC - Data Structures for the TCP-Friendly Rate Control congestion* |

5 | * * control mechanism as specified in RFC 3448.* |

6 | * ** |

7 | * * Copyright (c) 2005 The University of Waikato, Hamilton, New Zealand.* |

8 | * * Copyright (c) 2005 Ian McDonald <iam4@cs.waikato.ac.nz>* |

9 | * * Copyright (c) 2005 Arnaldo Carvalho de Melo <acme@conectiva.com.br>* |

10 | * * Copyright (c) 2003 Nils-Erik Mattsson, Joacim Haggmark, Magnus Erixzon* |

11 | * ** |

12 | * * This program is free software; you can redistribute it and/or modify* |

13 | * * it under the terms of the GNU General Public License as published by* |

14 | * * the Free Software Foundation; either version 2 of the License, or* |

15 | * * (at your option) any later version.* |

16 | * */* |

17 | __#include <linux/types.h>__ |

18 | |

19 | */** tfrc_rx_info - TFRC Receiver Data Structure* |

20 | * ** |

21 | * * @tfrcrx_x_recv: receiver estimate of sending rate (3.2.2)* |

22 | * * @tfrcrx_rtt: round-trip-time (communicated by sender)* |

23 | * * @tfrcrx_p: current estimate of loss event rate (3.2.2)* |

24 | * */* |

25 | **struct** tfrc_rx_info { |

26 | __u32 tfrcrx_x_recv; |

27 | __u32 tfrcrx_rtt; |

28 | __u32 tfrcrx_p; |

29 | }; |

30 | |

31 | */** tfrc_tx_info - TFRC Sender Data Structure* |

32 | * ** |

33 | * * @tfrctx_x: computed transmit rate (4.3 (4))* |

34 | * * @tfrctx_x_recv: receiver estimate of send rate (4.3)* |

35 | * * @tfrctx_x_calc: return value of throughput equation (3.1)* |

36 | * * @tfrctx_rtt: (moving average) estimate of RTT (4.3)* |

37 | * * @tfrctx_p: current loss event rate (5.4)* |

38 | * * @tfrctx_rto: estimate of RTO, equals 4*RTT (4.3)* |

39 | * * @tfrctx_ipi: inter-packet interval (4.6)* |

40 | * ** |

41 | * * Note: X and X_recv are both maintained in units of 64 * bytes/second. This* |

42 | * * enables a finer resolution of sending rates and avoids problems with* |

43 | * * integer arithmetic; u32 is not sufficient as scaling consumes 6 bits.* |

44 | * */* |

45 | **struct** tfrc_tx_info { |

46 | __u64 tfrctx_x; |

47 | __u64 tfrctx_x_recv; |

48 | __u32 tfrctx_x_calc; |

49 | __u32 tfrctx_rtt; |

50 | __u32 tfrctx_p; |

51 | __u32 tfrctx_rto; |

52 | __u32 tfrctx_ipi; |

53 | }; |

54 | |

55 | __#endif /* _LINUX_TFRC_H_ */__ |

56 | |