Commit 5719efdd authored Jan 25, 2011 by Bruno Randolf Committed by John W. Linville Jan 28, 2011

ath: Add function to check if 4.9GHz channels are allowed

This adds a helper function to ath/regd.c which can be asked if 4.9GHz channels
are allowed for a given regulatory domain code. This keeps the knowledge of
regdomains and defines like MKK9_MKKC in one place. I'm passing the regdomain
code instead of the ath_regulatory structure because this needs to be called
quite early in the driver inititalization where ath_regulatory is not available
yet in ath5k.

I'm using MKK9_MKKC only because this is the regdomain in the 802.11j enabled
sample cards we got from our vendor. I found some hints in HAL code that this
is used by Atheros to indicate 4.9GHz channels support and that there might be
other domain codes as well, but as I don't have any documentation I'm just
putting in what I need right now. It can be extended later.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 20a90490

drivers/net/wireless/ath/regd.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -158,6 +158,13 @@ ieee80211_regdomain ath_world_regdomain(struct ath_regulatory reg)
		}
		}

		bool ath_is_49ghz_allowed(u16 regdomain)
		{
		/* possibly more */
		return regdomain == MKK9_MKKC;
		}
		EXPORT_SYMBOL(ath_is_49ghz_allowed);

		/* Frequency is one where radar detection is required */
		static bool ath_is_radar_freq(u16 center_freq)
		{

drivers/net/wireless/ath/regd.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -250,6 +250,7 @@ enum CountryCode {
		};

		bool ath_is_world_regd(struct ath_regulatory *reg);
		bool ath_is_49ghz_allowed(u16 redomain);
		int ath_regd_init(struct ath_regulatory reg, struct wiphy wiphy,
		int (reg_notifier)(struct wiphy wiphy,
		struct regulatory_request *request));