From 7ca7bc501e15282d4fac3719052731113afcece1 Mon Sep 17 00:00:00 2001 From: Jo-Philipp Wich Date: Tue, 9 Apr 2013 14:37:55 +0000 Subject: [PATCH] iwinfo: fix frequency/channel and channel/frequency conversions to properly implement 802.11j SVN-Revision: 36292 --- package/network/utils/iwinfo/Makefile | 2 +- .../network/utils/iwinfo/src/iwinfo_nl80211.c | 31 ++++++++++++------- 2 files changed, 20 insertions(+), 13 deletions(-) diff --git a/package/network/utils/iwinfo/Makefile b/package/network/utils/iwinfo/Makefile index f8a92dac4b..23f3f38cb4 100644 --- a/package/network/utils/iwinfo/Makefile +++ b/package/network/utils/iwinfo/Makefile @@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=libiwinfo -PKG_RELEASE:=39 +PKG_RELEASE:=40 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME) PKG_CONFIG_DEPENDS := \ diff --git a/package/network/utils/iwinfo/src/iwinfo_nl80211.c b/package/network/utils/iwinfo/src/iwinfo_nl80211.c index 819845ad1d..2a2bb66dfe 100644 --- a/package/network/utils/iwinfo/src/iwinfo_nl80211.c +++ b/package/network/utils/iwinfo/src/iwinfo_nl80211.c @@ -346,23 +346,30 @@ static int nl80211_freq2channel(int freq) { if (freq == 2484) return 14; - - if (freq < 2484) + else if (freq < 2484) return (freq - 2407) / 5; - - return (freq / 5) - 1000; + else if (freq >= 4910 && freq <= 4980) + return (freq - 4000) / 5; + else + return (freq - 5000) / 5; } static int nl80211_channel2freq(int channel, const char *band) { - if (channel == 14) - return 2484; - - if ((channel < 14) && (!band || band[0] != 'a')) - return (channel * 5) + 2407; - - if (channel > 0) - return (1000 + channel) * 5; + if (!band || band[0] != 'a') + { + if (channel == 14) + return 2484; + else if (channel < 14) + return (channel * 5) + 2407; + } + else + { + if (channel >= 182 && channel <= 196) + return (channel * 5) + 4000; + else + return (channel * 5) + 5000; + } return 0; } -- 2.25.1