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CoDel can be too aggressive if a station sends at a very low rate, leading reduced throughput. This gets worse the more stations are present, as each station gets more bursty the longer the round-robin scheduling between stations takes. This adds dynamic adjustment of CoDel parameters per station. It uses the rate selection information to estimate throughput and sets more lenient CoDel parameters if the estimated throughput is below a threshold (modified by the number of active stations). A new callback is added that drivers can use to notify mac80211 about changes in expected throughput, so the same adjustment can be made for cards that implement rate control in firmware. Drivers that don't use this will just get the default parameters. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk> [remove currently unnecessary EXPORT_SYMBOL, fix kernel-doc, remove inline annotation] Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.