1 files changed, 52 insertions, 0 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 59eb2cf42e5f..47542ee01c57 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -87,6 +87,10 @@ static struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] __read_mostly = {
         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
                                 .len = IEEE80211_MAX_MESH_ID_LEN },
         [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 },
+
+        [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
+        [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
+        [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 };
 
 /* message building helper */
@@ -1525,6 +1529,48 @@ static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
         return err;
 }
 
+static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
+{
+        struct cfg80211_registered_device *drv;
+        int err;
+        struct net_device *dev;
+        struct bss_parameters params;
+
+        memset(&params, 0, sizeof(params));
+        /* default to not changing parameters */
+        params.use_cts_prot = -1;
+        params.use_short_preamble = -1;
+        params.use_short_slot_time = -1;
+
+        if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
+                params.use_cts_prot =
+                    nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
+        if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
+                params.use_short_preamble =
+                    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
+        if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
+                params.use_short_slot_time =
+                    nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
+
+        err = get_drv_dev_by_info_ifindex(info->attrs, &drv, &dev);
+        if (err)
+                return err;
+
+        if (!drv->ops->change_bss) {
+                err = -EOPNOTSUPP;
+                goto out;
+        }
+
+        rtnl_lock();
+        err = drv->ops->change_bss(&drv->wiphy, dev, &params);
+        rtnl_unlock();
+
+ out:
+        cfg80211_put_dev(drv);
+        dev_put(dev);
+        return err;
+}
+
 static struct genl_ops nl80211_ops[] = {
         {
                 .cmd = NL80211_CMD_GET_WIPHY,
@@ -1656,6 +1702,12 @@ static struct genl_ops nl80211_ops[] = {
                 .policy = nl80211_policy,
                 .flags = GENL_ADMIN_PERM,
         },
+        {
+                .cmd = NL80211_CMD_SET_BSS,
+                .doit = nl80211_set_bss,
+                .policy = nl80211_policy,
+                .flags = GENL_ADMIN_PERM,
+        },
 };
 
 /* multicast groups */