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    [TCP]: TCP Low Priority congestion control · 7c106d7e
    Wong Hoi Sing Edison 提交于
     TCP Low Priority is a distributed algorithm whose goal is to utilize only
     the excess network bandwidth as compared to the ``fair share`` of
     bandwidth as targeted by TCP. Available from:
       http://www.ece.rice.edu/~akuzma/Doc/akuzma/TCP-LP.pdf
    
    Original Author:
     Aleksandar Kuzmanovic <akuzma@northwestern.edu>
    
    See http://www-ece.rice.edu/networks/TCP-LP/ for their implementation.
    As of 2.6.13, Linux supports pluggable congestion control algorithms.
    Due to the limitation of the API, we take the following changes from
    the original TCP-LP implementation:
     o We use newReno in most core CA handling. Only add some checking
       within cong_avoid.
     o Error correcting in remote HZ, therefore remote HZ will be keeped
       on checking and updating.
     o Handling calculation of One-Way-Delay (OWD) within rtt_sample, sicne
       OWD have a similar meaning as RTT. Also correct the buggy formular.
     o Handle reaction for Early Congestion Indication (ECI) within
       pkts_acked, as mentioned within pseudo code.
     o OWD is handled in relative format, where local time stamp will in
       tcp_time_stamp format.
    
    Port from 2.4.19 to 2.6.16 as module by:
     Wong Hoi Sing Edison <hswong3i@gmail.com>
     Hung Hing Lun <hlhung3i@gmail.com>
    Signed-off-by: NWong Hoi Sing Edison <hswong3i@gmail.com>
    Signed-off-by: NStephen Hemminger <shemminger@osdl.org>
    Signed-off-by: NDavid S. Miller <davem@davemloft.net>
    7c106d7e
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