cfg80211: Add new BSS attribute ht_opmode

Add a new BSS attribute to allow hostapd to set the current HT opmode.
Otherwise drivers won't be able to set up protection for HT rates in
AP mode.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 8e28053..3804212 100644 (file)
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -849,6 +849,8 @@ enum nl80211_commands {
  *     flag isn't set, the frame will be rejected. This is also used as an
  *     nl80211 capability flag.
  *
+ * @NL80211_ATTR_BSS_HTOPMODE: HT operation mode (u16)
+ *
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
  */
@@ -1025,6 +1027,8 @@ enum nl80211_attrs {
 
        NL80211_ATTR_OFFCHANNEL_TX_OK,
 
+       NL80211_ATTR_BSS_HT_OPMODE,
+
        /* add attributes here, update the policy in nl80211.c */
 
        __NL80211_ATTR_AFTER_LAST,

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 8764c9a..0d59799 100644 (file)
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -605,6 +605,8 @@ struct mpath_info {
  *     (or NULL for no change)
  * @basic_rates_len: number of basic rates
  * @ap_isolate: do not forward packets between connected stations
+ * @ht_opmode: HT Operation mode
+ *     (u16 = opmode, -1 = do not change)
  */
 struct bss_parameters {
        int use_cts_prot;
@@ -613,6 +615,7 @@ struct bss_parameters {
        u8 *basic_rates;
        u8 basic_rates_len;
        int ap_isolate;
+       int ht_opmode;
 };
 
 /*

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2cf0333..c3f80e5 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -121,6 +121,7 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = {
        [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
        [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
                                           .len = NL80211_MAX_SUPP_RATES },
+       [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 
        [NL80211_ATTR_MESH_PARAMS] = { .type = NLA_NESTED },
 
@@ -2462,6 +2463,7 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
        params.use_short_preamble = -1;
        params.use_short_slot_time = -1;
        params.ap_isolate = -1;
+       params.ht_opmode = -1;
 
        if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
                params.use_cts_prot =
@@ -2480,6 +2482,9 @@ static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
        }
        if (info->attrs[NL80211_ATTR_AP_ISOLATE])
                params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
+       if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
+               params.ht_opmode =
+                       nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
 
        if (!rdev->ops->change_bss)
                return -EOPNOTSUPP;