wifi: cfg80211: simplify cfg80211_mlme_auth() prototype

This function has far too many parameters now, move out
the BSS lookup and pass the request struct instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/core.h

@@ -363,13 +363,7 @@ int cfg80211_stop_ap(struct cfg80211_registered_device *rdev,
 /* MLME */
 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct ieee80211_channel *chan,
-		       enum nl80211_auth_type auth_type,
-		       const u8 *bssid,
-		       const u8 *ssid, int ssid_len,
-		       const u8 *ie, int ie_len,
-		       const u8 *key, int key_len, int key_idx,
-		       const u8 *auth_data, int auth_data_len);
+		       struct cfg80211_auth_request *req);
 int cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
 			struct net_device *dev,
 			struct cfg80211_assoc_request *req);

net/wireless/mlme.c

@@ -232,47 +232,26 @@ EXPORT_SYMBOL(cfg80211_michael_mic_failure);
 /* some MLME handling for userspace SME */
 int cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
 		       struct net_device *dev,
-		       struct ieee80211_channel *chan,
-		       enum nl80211_auth_type auth_type,
-		       const u8 *bssid,
-		       const u8 *ssid, int ssid_len,
-		       const u8 *ie, int ie_len,
-		       const u8 *key, int key_len, int key_idx,
-		       const u8 *auth_data, int auth_data_len)
+		       struct cfg80211_auth_request *req)
 {
 	struct wireless_dev *wdev = dev->ieee80211_ptr;
-	struct cfg80211_auth_request req = {
-		.ie = ie,
-		.ie_len = ie_len,
-		.auth_data = auth_data,
-		.auth_data_len = auth_data_len,
-		.auth_type = auth_type,
-		.key = key,
-		.key_len = key_len,
-		.key_idx = key_idx,
-	};
-	int err;
 
 	ASSERT_WDEV_LOCK(wdev);
 
-	if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
-		if (!key || !key_len || key_idx < 0 || key_idx > 3)
+	if (!req->bss)
+		return -ENOENT;
+
+	if (req->auth_type == NL80211_AUTHTYPE_SHARED_KEY) {
+		if (!req->key || !req->key_len ||
+		    req->key_idx < 0 || req->key_idx > 3)
 			return -EINVAL;
+	}
 
 	if (wdev->connected &&
-	    ether_addr_equal(bssid, wdev->u.client.connected_addr))
+	    ether_addr_equal(req->bss->bssid, wdev->u.client.connected_addr))
 		return -EALREADY;
 
-	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
-				   IEEE80211_BSS_TYPE_ESS,
-				   IEEE80211_PRIVACY_ANY);
-	if (!req.bss)
-		return -ENOENT;
-
-	err = rdev_auth(rdev, dev, &req);
-
-	cfg80211_put_bss(&rdev->wiphy, req.bss);
-	return err;
+	return rdev_auth(rdev, dev, req);
 }
 
 /*  Do a logical ht_capa &= ht_capa_mask.  */

net/wireless/nl80211.c

@@ -10168,11 +10168,12 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	struct cfg80211_registered_device *rdev = info->user_ptr[0];
 	struct net_device *dev = info->user_ptr[1];
 	struct ieee80211_channel *chan;
-	const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
-	int err, ssid_len, ie_len = 0, auth_data_len = 0;
+	const u8 *bssid, *ssid;
+	int err, ssid_len;
 	enum nl80211_auth_type auth_type;
 	struct key_parse key;
 	bool local_state_change;
+	struct cfg80211_auth_request req = {};
 	u32 freq;
 
 	if (!info->attrs[NL80211_ATTR_MAC])
@@ -10243,8 +10244,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
 
 	if (info->attrs[NL80211_ATTR_IE]) {
-		ie = nla_data(info->attrs[NL80211_ATTR_IE]);
-		ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
+		req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
+		req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
 	}
 
 	auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
@@ -10264,8 +10265,8 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 		    auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
 		    auth_type != NL80211_AUTHTYPE_FILS_PK)
 			return -EINVAL;
-		auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
-		auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
+		req.auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
+		req.auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
 	}
 
 	local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
@@ -10277,12 +10278,23 @@ static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
 	if (local_state_change)
 		return 0;
 
+	req.auth_type = auth_type;
+	req.key = key.p.key;
+	req.key_len = key.p.key_len;
+	req.key_idx = key.idx;
+
+	req.bss = cfg80211_get_bss(&rdev->wiphy, chan, bssid, ssid, ssid_len,
+				   IEEE80211_BSS_TYPE_ESS,
+				   IEEE80211_PRIVACY_ANY);
+	if (!req.bss)
+		return -ENOENT;
+
 	wdev_lock(dev->ieee80211_ptr);
-	err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
-				 ssid, ssid_len, ie, ie_len,
-				 key.p.key, key.p.key_len, key.idx,
-				 auth_data, auth_data_len);
+	err = cfg80211_mlme_auth(rdev, dev, &req);
 	wdev_unlock(dev->ieee80211_ptr);
+
+	cfg80211_put_bss(&rdev->wiphy, req.bss);
+
 	return err;
 }
 

net/wireless/sme.c

@@ -147,6 +147,7 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev,
 {
 	struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
 	struct cfg80211_connect_params *params;
+	struct cfg80211_auth_request auth_req = {};
 	struct cfg80211_assoc_request req = {};
 	int err;
 
@@ -167,13 +168,18 @@ static int cfg80211_conn_do_work(struct wireless_dev *wdev,
 		if (WARN_ON(!rdev->ops->auth))
 			return -EOPNOTSUPP;
 		wdev->conn->state = CFG80211_CONN_AUTHENTICATING;
-		return cfg80211_mlme_auth(rdev, wdev->netdev,
-					  params->channel, params->auth_type,
-					  params->bssid,
-					  params->ssid, params->ssid_len,
-					  NULL, 0,
-					  params->key, params->key_len,
-					  params->key_idx, NULL, 0);
+		auth_req.key = params->key;
+		auth_req.key_len = params->key_len;
+		auth_req.key_idx = params->key_idx;
+		auth_req.auth_type = params->auth_type;
+		auth_req.bss = cfg80211_get_bss(&rdev->wiphy, params->channel,
+						params->bssid,
+						params->ssid, params->ssid_len,
+						IEEE80211_BSS_TYPE_ESS,
+						IEEE80211_PRIVACY_ANY);
+		err = cfg80211_mlme_auth(rdev, wdev->netdev, &auth_req);
+		cfg80211_put_bss(&rdev->wiphy, auth_req.bss);
+		return err;
 	case CFG80211_CONN_AUTH_FAILED_TIMEOUT:
 		*treason = NL80211_TIMEOUT_AUTH;
 		return -ENOTCONN;