Date: Mon, 5 Nov 2018 18:48:24 +0530 From: Archit Pandey <architpandeynitk@gmail.com> To: freebsd-net@freebsd.org, anandtarun2@gmail.com Subject: Help adding Adaptive RED to Existing RED Code Message-ID: <b575f093-775e-3c31-a2b5-f78054c8460d@gmail.com>
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Hello all! We are working on implementing Adaptive RED over existing RED code that can be found in /sys/net/altq/altq_red.c and /sys/net/altq/altq.h. We have added the following fields and functions to the source: 1. In /sys/net/altq/altq_red.h Added to struct red_t: struct callout adaptive_callout; int target_min; int target_max; 2. In /sys/net/altq/altq_red.c Functions added: void red_adaptive_timer(): function that is responsible for scheduling a callout for red_adaptive_algo() every 500ms void red_adaptive_algo(): function that adjusts the drop probability. The most important part of the algorithm is the fact that it is called every 500ms. We are unable to make that happen. We found resources online pointing us to use callout_init(), callout_reset() and callout_schedule(). However, we couldn't find documentation on how to use them correctly and in what order. Would really appreciate it if someone could point us to useful resources, or could give us an example of using those functions. Thanks for your time. Warm regards, --- Archit Pandey Junior Year Undergrad Department of Computer Science and Engineering National Institute of Technology Karnataka Surathkal, India
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