Only allow DFS to be set if the DFS regions agree.
Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxxxxxxxxx>
---
net/wireless/reg.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 2796b62..068cb40 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -571,6 +571,20 @@ static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
}
/*
+ * Later on we can perhaps use the more restrictive DFS
+ * region but we don't have information for that yet so
+ * for now simply disallow conflicts.
+ */
+static enum nl80211_dfs_regions
+reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1,
+ const enum nl80211_dfs_regions dfs_region2)
+{
+ if (dfs_region1 != dfs_region2)
+ return NL80211_DFS_UNSET;
+ return dfs_region1;
+}
+
+/*
* Helper for regdom_intersect(), this does the real
* mathematical intersection fun
*/
@@ -701,6 +715,8 @@ regdom_intersect(const struct ieee80211_regdomain *rd1,
rd->n_reg_rules = num_rules;
rd->alpha2[0] = '9';
rd->alpha2[1] = '8';
+ rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region,
+ rd2->dfs_region);
return rd;
}
--
1.8.4.rc3
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