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cfg80211: add debug prints for when we ignore regulatory hints

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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: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Luis R. Rodriguez 2010-10-21 19:17:03 +05:30 committed by John W. Linville
parent ca4ffe8f28
commit 926a0a094d
1 changed files with 39 additions and 3 deletions
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42
net/wireless/reg.c
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@ -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;
}