package/madwifi/Config.in

   1 # MadWifi configuration
   2
   3 config MADWIFI_DEBUG
   4         bool "Enable compilation of debugging features"
   5         depends on DEVEL && PACKAGE_kmod-madwifi
   6         default n
   7
   8 choice
   9         prompt "Madwifi version"
  10         depends on PACKAGE_kmod-madwifi
  11         default MADWIFI_STABLE
  12         help
  13           This option allows you to select the version of MadWifi to be built.
  14
  15 config MADWIFI_STABLE
  16         bool "Use the OpenWrt stable version of madwifi"
  17
  18 config MADWIFI_UPSTREAM
  19         depends !LINUX_2_6_26
  20         depends !TARGET_atheros
  21         bool "Use the upstream release version 0.9.4"
  22
  23 endchoice
  24
  25 choice
  26         prompt "Rate control algorithm selection"
  27         depends on PACKAGE_kmod-madwifi
  28         default MADWIFI_RCA_MINSTREL
  29         help
  30           This option controls how MadWifi chooses its bitrate.
  31
  32 config MADWIFI_RCA_MINSTREL
  33         bool "Use the Minstrel rate control algorithm"
  34         help
  35           This code is takes a wandering minstrel approach. Wander around the
  36           different rates, singing wherever you can. And then, look at the
  37           performance, and make a choice. Note that the wandering minstrel will
  38           always wander in directions where he/she feels he/she will get paid
  39           the best for his/her work.
  40
  41 config MADWIFI_RCA_ONOE
  42         bool "Use the Onoe rate control algorithm"
  43         help
  44           Onoe is a credit based RCA where the value of the credit is determined
  45           by the frequency of successful, erroneous and retransmissions
  46           accumulated during a fixed invocation period of 1000 ms. If less than
  47           10% of the packets need to be retransmitted at a particular rate, Onoe
  48           keeps increasing its credit point till the threshold value of 10 is
  49           reached. At this point, the current transmission rate is increased to
  50           the next available higher rate and the process repeated with credit
  51           score of zero. Similar logic holds for deducting the credit score and
  52           moving to a lower bit-rate for failed packet
  53           transmission/retransmission attempts. However, once a bit-rate has
  54           been marked as failure in the previous attempt, Onoe will not attempt
  55           to select that bit-rate until 10 seconds have elapsed since the last
  56           attempt. Due to the manner in which it operates, Onoe is conservative
  57           in rate selection and is less sensitive to individual packet failure.
  58
  59 config MADWIFI_RCA_AMRR
  60         bool "Use the AMRR rate control algorithm"
  61         help
  62           AMRR uses Binary Exponential Backoff (BEB) technique to adapt the
  63           length (threshold) of the sampling period used to change the values of
  64           bit-rate and transmission count parameters. It uses probe packets and
  65           depending on their transmission status adaptively changes the threshold
  66           value. The adaptation mechanism ensures fewer failed
  67           transmission/retransmission and higher throughput by not switching to a
  68           higher rate as specified by the backoff mechanism. In addition to this,
  69           the AMRR employs heuristics to capture the short-term variations of the
  70           channel by judiciously setting the rate and transmission count
  71           parameters.
  72
  73 config MADWIFI_RCA_SAMPLERATE
  74         bool "Use the SampleRate rate control algorithm"
  75         help
  76           SampleRate decides on the transmission bit-rate based on the past
  77           history of performance; it keeps a record of the number of successive
  78           failures, the number of successful transmits and the total transmission
  79           time along with the destination for that bit-rate. Stale samples are
  80           removed based on a EWMA windowing mechanism. If in the sampling
  81           process, no successful acknowledgment is received or the number of
  82           packets sent is multiple of 10 on a specific link, it transmits the
  83           packet with the highest rate which has not failed 4 successive times.
  84           Other than that it transmits packets at the rate which has the lowest
  85           average transmission time.
  86
  87 endchoice