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iwnstats: fix build with clang and allow install under /usr/local/sbin

Description

iwnstats: fix build with clang and allow install under /usr/local/sbin

iwnstats was not compiling because of some issues raised by the clang
compiler due to -Werror. As a tool it is not connected to world build.

Add missing field "barker_mrc" initialization in struct
iwn_sensitivity_limits for -Wmissing-field-initializers, remove unused
pointer *is on iwn_stats_*_print functions and unused variables for
-Wunused-parameter and -Wunused-variable.

The value for field "barker_mrc" of struct iwn2030_sensitivity_limits
was obtained from linux 3.2 wireless/iwlwifi driver code (iwl-2000.c:115
.barker_corr_th_min_mrc = 390).

Also set BINDIR in Makefile to make it possible to install under
/usr/local/sbin/iwnstats as it require super user.

Reviewed by: adrian
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29800

(cherry picked from commit 561d34d70596b455c6a513431f8ad007076f90c5)

Details

Provenance
sbzAuthored on Apr 20 2021, 5:58 PM
Reviewer
adrian
Differential Revision
D29800: iwnstats: fix build with clang and allow install under /usr/local/sbin
Parents
R10:95b86ac22728: Fix race in case of device destruction.
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