cfg80211: add cellular base station regulatory hint support

[mirror_ubuntu-bionic-kernel.git] / net / wireless / nl80211.c

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 9216e45e53a090172c3ef2f036a9e83d802c2010..50b1a0e84f1a95d9b1a501f6fc2506df0230700a 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -354,6 +354,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
        [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
        [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
        [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
+       [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 };
 
 /* policy for the key attributes */
@@ -3582,6 +3583,7 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 {
        int r;
        char *data = NULL;
+       enum nl80211_user_reg_hint_type user_reg_hint_type;
 
        /*
         * You should only get this when cfg80211 hasn't yet initialized
@@ -3601,7 +3603,21 @@ static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
 
        data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
 
-       r = regulatory_hint_user(data);
+       if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
+               user_reg_hint_type =
+                 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
+       else
+               user_reg_hint_type = NL80211_USER_REG_HINT_USER;
+
+       switch (user_reg_hint_type) {
+       case NL80211_USER_REG_HINT_USER:
+       case NL80211_USER_REG_HINT_CELL_BASE:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       r = regulatory_hint_user(data, user_reg_hint_type);
 
        return r;
 }
@@ -3971,6 +3987,11 @@ static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
                        cfg80211_regdomain->dfs_region)))
                goto nla_put_failure;
 
+       if (reg_last_request_cell_base() &&
+           nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
+                       NL80211_USER_REG_HINT_CELL_BASE))
+               goto nla_put_failure;
+
        nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES);
        if (!nl_reg_rules)
                goto nla_put_failure;