-config PACKAGE_KMOD_MADWIFI
- prompt "kmod-madwifi...................... Atheros Wifi driver"
- tristate
- default y if LINUX_2_6_BRCM || LINUX_2_6_ARUBA || LINUX_2_4_AR531X || LINUX_2_6_XSCALE
- default m if DEVEL
+# MadWifi configuration
+
+config MADWIFI_DEBUG
+ bool "Enable compilation of debugging features"
+ depends on EXPERIMENTAL && PACKAGE_kmod-madwifi
default n
+
+choice
+ prompt "Rate control algorithm selection"
+ depends on PACKAGE_kmod-madwifi
+ default MADWIFI_RCA_MINSTREL
help
- Driver for Atheros 802.11a/b/g MiniPCI cards
-
- http://www.madwifi.org/
+ This option controls how MadWifi chooses its bitrate.
+
+config MADWIFI_RCA_MINSTREL
+ bool "Use the Minstrel rate control algorithm"
+ help
+ This code is takes a wandering minstrel approach. Wander around the
+ different rates, singing wherever you can. And then, look at the
+ performance, and make a choice. Note that the wandering minstrel will
+ always wander in directions where he/she feels he/she will get paid
+ the best for his/her work.
+
+config MADWIFI_RCA_ONOE
+ bool "Use the Onoe rate control algorithm"
+ help
+ Onoe is a credit based RCA where the value of the credit is determined
+ by the frequency of successful, erroneous and retransmissions
+ accumulated during a fixed invocation period of 1000 ms. If less than
+ 10% of the packets need to be retransmitted at a particular rate, Onoe
+ keeps increasing its credit point till the threshold value of 10 is
+ reached. At this point, the current transmission rate is increased to
+ the next available higher rate and the process repeated with credit
+ score of zero. Similar logic holds for deducting the credit score and
+ moving to a lower bit-rate for failed packet
+ transmission/retransmission attempts. However, once a bit-rate has
+ been marked as failure in the previous attempt, Onoe will not attempt
+ to select that bit-rate until 10 seconds have elapsed since the last
+ attempt. Due to the manner in which it operates, Onoe is conservative
+ in rate selection and is less sensitive to individual packet failure.
+
+config MADWIFI_RCA_AMRR
+ bool "Use the AMRR rate control algorithm"
+ help
+ AMRR uses Binary Exponential Backoff (BEB) technique to adapt the
+ length (threshold) of the sampling period used to change the values of
+ bit-rate and transmission count parameters. It uses probe packets and
+ depending on their transmission status adaptively changes the threshold
+ value. The adaptation mechanism ensures fewer failed
+ transmission/retransmission and higher throughput by not switching to a
+ higher rate as specified by the backoff mechanism. In addition to this,
+ the AMRR employs heuristics to capture the short-term variations of the
+ channel by judiciously setting the rate and transmission count
+ parameters.
+
+config MADWIFI_RCA_SAMPLERATE
+ bool "Use the SampleRate rate control algorithm"
+ help
+ SampleRate decides on the transmission bit-rate based on the past
+ history of performance; it keeps a record of the number of successive
+ failures, the number of successful transmits and the total transmission
+ time along with the destination for that bit-rate. Stale samples are
+ removed based on a EWMA windowing mechanism. If in the sampling
+ process, no successful acknowledgment is received or the number of
+ packets sent is multiple of 10 on a specific link, it transmits the
+ packet with the highest rate which has not failed 4 successive times.
+ Other than that it transmits packets at the rate which has the lowest
+ average transmission time.
+
+endchoice
projects / openwrt.git / blobdiff