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Commit 926a0a09 authored by Luis R. Rodriguez's avatar Luis R. Rodriguez Committed by John W. Linville
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cfg80211: add debug prints for when we ignore regulatory hints



This can help with debugging issues. You will only see
these with CONFIG_CFG80211_REG_DEBUG enabled.

Cc: Easwar Krishnan <easwar.krishnan@atheros.com>
Signed-off-by: default avatarLuis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: default avatarSenthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent ca4ffe8f
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+39 −3
Original line number Diff line number Diff line
@@ -711,6 +711,25 @@ int freq_reg_info(struct wiphy *wiphy,
}
EXPORT_SYMBOL(freq_reg_info);

#ifdef CONFIG_CFG80211_REG_DEBUG
static const char *reg_initiator_name(enum nl80211_reg_initiator initiator)
{
	switch (initiator) {
	case NL80211_REGDOM_SET_BY_CORE:
		return "Set by core";
	case NL80211_REGDOM_SET_BY_USER:
		return "Set by user";
	case NL80211_REGDOM_SET_BY_DRIVER:
		return "Set by driver";
	case NL80211_REGDOM_SET_BY_COUNTRY_IE:
		return "Set by country IE";
	default:
		WARN_ON(1);
		return "Set by bug";
	}
}
#endif

/*
 * Note that right now we assume the desired channel bandwidth
 * is always 20 MHz for each individual channel (HT40 uses 20 MHz
@@ -821,19 +840,36 @@ static void handle_band(struct wiphy *wiphy,
static bool ignore_reg_update(struct wiphy *wiphy,
			      enum nl80211_reg_initiator initiator)
{
	if (!last_request)
	if (!last_request) {
		REG_DBG_PRINT("cfg80211: Ignoring regulatory request %s since "
			      "last_request is not set\n",
			      reg_initiator_name(initiator));
		return true;
	}

	if (initiator == NL80211_REGDOM_SET_BY_CORE &&
	    wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY)
	    wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) {
		REG_DBG_PRINT("cfg80211: Ignoring regulatory request %s "
			      "since the driver uses its own custom "
			      "regulatory domain ",
			      reg_initiator_name(initiator));
		return true;
	}

	/*
	 * wiphy->regd will be set once the device has its own
	 * desired regulatory domain set
	 */
	if (wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY && !wiphy->regd &&
	    initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
	    !is_world_regdom(last_request->alpha2))
	    !is_world_regdom(last_request->alpha2)) {
		REG_DBG_PRINT("cfg80211: Ignoring regulatory request %s "
			      "since the driver requires its own regulaotry "
			      "domain to be set first",
			      reg_initiator_name(initiator));
		return true;
	}

	return false;
}