tree 25d4261bbed94b8fce8b5d826287955ef44011e9
parent 2b3121eebf1ec6cbcb25422d6a254d2b4fc15d18
author Jacob Erlbeck <jerlbeck@sysmocom.de> 1450884547 +0100
committer Jacob Erlbeck <jerlbeck@sysmocom.de> 1454331492 +0100

rlc: Add and use mod_sns(bsn) method

Currently there is only a mod_sns() method which is being used in
expression like bsn_expr & win.mod_sns(). This only works, because
it is known that mod_sns() is (sns() - 1) where sns() in turn is
always 2^n. This is error prone, hard to read, and relies on window
specifics that should be kept inside the respective module.

This commit adds a mod_sns(uint bsn) method to gprs_rlc_ul_window and
gprs_rlc_dl_window, that encapsulates and hides this optimized
computation.

Sponsored-by: On-Waves ehf