cfg80211: add reg_get_dfs_region()
This can be used outside of the regulatory context for any checks on the DFS region. The central cfg80211 dfs_region is always used and if it does not match with the wiphy a debug print is issued. Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -135,6 +135,33 @@ static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
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return "Unknown";
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}
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enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
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{
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const struct ieee80211_regdomain *regd = NULL;
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const struct ieee80211_regdomain *wiphy_regd = NULL;
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regd = get_cfg80211_regdom();
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if (!wiphy)
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goto out;
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wiphy_regd = get_wiphy_regdom(wiphy);
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if (!wiphy_regd)
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goto out;
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if (wiphy_regd->dfs_region == regd->dfs_region)
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goto out;
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REG_DBG_PRINT("%s: device specific dfs_region "
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"(%s) disagrees with cfg80211's "
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"central dfs_region (%s)\n",
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dev_name(&wiphy->dev),
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reg_dfs_region_str(wiphy_regd->dfs_region),
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reg_dfs_region_str(regd->dfs_region));
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out:
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return regd->dfs_region;
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}
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static void rcu_free_regdom(const struct ieee80211_regdomain *r)
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{
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if (!r)
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@ -21,6 +21,7 @@ extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
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bool reg_is_valid_request(const char *alpha2);
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bool is_world_regdom(const char *alpha2);
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bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region);
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enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy);
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int regulatory_hint_user(const char *alpha2,
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enum nl80211_user_reg_hint_type user_reg_hint_type);
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