cfg80211: handle 6 GHz capability of new station

Handle 6 GHz HE capability while adding new station. It will be used
later in mac80211 station processing.

Signed-off-by: Rajkumar Manoharan <rmanohar@codeaurora.org>
Link: https://lore.kernel.org/r/1589399105-25472-2-git-send-email-rmanohar@codeaurora.org
[handle nl80211_set_station, require WME,
 remove NL80211_HE_6GHZ_CAPABILITY_LEN]
Link: https://lore.kernel.org/r/20200528213443.b6b711fd4312.Ic9b97d57b6c4f2b28d4b2d23d2849d8bc20bd8cc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index a386533..da734ea 100644 (file)
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1238,6 +1238,7 @@ struct sta_txpwr {
  * @he_capa_len: the length of the HE capabilities
  * @airtime_weight: airtime scheduler weight for this station
  * @txpwr: transmit power for an associated station
+ * @he_6ghz_capa: HE 6 GHz Band capabilities of station
  */
 struct station_parameters {
        const u8 *supported_rates;
@@ -1270,6 +1271,7 @@ struct station_parameters {
        u8 he_capa_len;
        u16 airtime_weight;
        struct sta_txpwr txpwr;
+       const struct ieee80211_he_6ghz_capa *he_6ghz_capa;
 };
 
 /**

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index c14666b..e42ae42 100644 (file)
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -2502,6 +2502,9 @@ enum nl80211_commands {
  *     first channel segment specified in %NL80211_ATTR_CENTER_FREQ1.
  * @NL80211_ATTR_SCAN_FREQ_KHZ: nested attribute with KHz frequencies
  *
+ * @NL80211_ATTR_HE_6GHZ_CAPABILITY: HE 6 GHz Band Capability element (from
+ *     association request when used with NL80211_CMD_NEW_STATION).
+ *
  * @NUM_NL80211_ATTR: total number of nl80211_attrs available
  * @NL80211_ATTR_MAX: highest attribute number currently defined
  * @__NL80211_ATTR_AFTER_LAST: internal use
@@ -2982,6 +2985,8 @@ enum nl80211_attrs {
        NL80211_ATTR_CENTER_FREQ1_OFFSET,
        NL80211_ATTR_SCAN_FREQ_KHZ,
 
+       NL80211_ATTR_HE_6GHZ_CAPABILITY,
+
        /* add attributes here, update the policy in nl80211.c */
 
        __NL80211_ATTR_AFTER_LAST,

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 22c4d13..bf8bd82 100644 (file)
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -654,6 +654,10 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
        [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
        [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
        [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
+       [NL80211_ATTR_HE_6GHZ_CAPABILITY] = {
+               .type = NLA_EXACT_LEN,
+               .len = sizeof(struct ieee80211_he_6ghz_capa),
+       },
 };
 
 /* policy for the key attributes */
@@ -5989,6 +5993,10 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
                        nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
        }
 
+       if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
+               params.he_6ghz_capa =
+                       nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
+
        if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
                params.airtime_weight =
                        nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
@@ -6123,6 +6131,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
                        return -EINVAL;
        }
 
+       if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
+               params.he_6ghz_capa =
+                       nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
+
        if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
                params.opmode_notif_used = true;
                params.opmode_notif =
@@ -6167,10 +6179,14 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
                params.vht_capa = NULL;
 
                /* HE requires WME */
-               if (params.he_capa_len)
+               if (params.he_capa_len || params.he_6ghz_capa)
                        return -EINVAL;
        }
 
+       /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
+       if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
+               return -EINVAL;
+
        /* When you run into this, adjust the code below for the new flag */
        BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);