cfg80211: rework key operation

This reworks the key operation in cfg80211, and now only
allows, from userspace, configuring keys (via nl80211)
after the connection has been established (in managed
mode), the IBSS been joined (in IBSS mode), at any time
(in AP[_VLAN] modes) or never for all the other modes.

In order to do shared key authentication correctly, it
is now possible to give a WEP key to the AUTH command.
To configure static WEP keys, these are given to the
CONNECT or IBSS_JOIN command directly, for a userspace
SME it is assumed it will configure it properly after
the connection has been established.

Since mac80211 used to check the default key in IBSS
mode to see whether or not the network is protected,
it needs an update in that area, as well as an update
to make use of the WEP key passed to auth() for shared
key authentication.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 25 insertions, 7 deletions

diff --git a/net/wireless/core.h b/net/wireless/core.h
index e46cd6eb61d7..2ec8ddbe57de 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -238,6 +238,12 @@ struct cfg80211_event {
         };
 };
 
+struct cfg80211_cached_keys {
+        struct key_params params[6];
+        u8 data[6][WLAN_MAX_KEY_LEN];
+        int def, defmgmt;
+};
+
 
 /* free object */
 extern void cfg80211_dev_free(struct cfg80211_registered_device *rdev);
@@ -256,14 +262,18 @@ void cfg80211_bss_age(struct cfg80211_registered_device *dev,
 /* IBSS */
 int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
                          struct net_device *dev,
-                         struct cfg80211_ibss_params *params);
+                         struct cfg80211_ibss_params *params,
+                         struct cfg80211_cached_keys *connkeys);
 int cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
                        struct net_device *dev,
-                       struct cfg80211_ibss_params *params);
+                       struct cfg80211_ibss_params *params,
+                       struct cfg80211_cached_keys *connkeys);
 void cfg80211_clear_ibss(struct net_device *dev, bool nowext);
 int cfg80211_leave_ibss(struct cfg80211_registered_device *rdev,
                         struct net_device *dev, bool nowext);
 void __cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid);
+int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
+                            struct wireless_dev *wdev);
 
 /* MLME */
 int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
@@ -272,12 +282,14 @@ int __cfg80211_mlme_auth(struct cfg80211_registered_device *rdev,
                          enum nl80211_auth_type auth_type,
                          const u8 *bssid,
                          const u8 *ssid, int ssid_len,
-                         const u8 *ie, int ie_len);
+                         const u8 *ie, int ie_len,
+                         const u8 *key, int key_len, int key_idx);
 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 *ie, int ie_len,
+                       const u8 *key, int key_len, int key_idx);
 int __cfg80211_mlme_assoc(struct cfg80211_registered_device *rdev,
                           struct net_device *dev,
                           struct ieee80211_channel *chan,
@@ -310,10 +322,12 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
 /* SME */
 int __cfg80211_connect(struct cfg80211_registered_device *rdev,
                        struct net_device *dev,
-                       struct cfg80211_connect_params *connect);
+                       struct cfg80211_connect_params *connect,
+                       struct cfg80211_cached_keys *connkeys);
 int cfg80211_connect(struct cfg80211_registered_device *rdev,
                      struct net_device *dev,
-                     struct cfg80211_connect_params *connect);
+                     struct cfg80211_connect_params *connect,
+                     struct cfg80211_cached_keys *connkeys);
 int __cfg80211_disconnect(struct cfg80211_registered_device *rdev,
                           struct net_device *dev, u16 reason,
                           bool wextev);
@@ -323,11 +337,14 @@ int cfg80211_disconnect(struct cfg80211_registered_device *rdev,
 void __cfg80211_roamed(struct wireless_dev *wdev, const u8 *bssid,
                        const u8 *req_ie, size_t req_ie_len,
                        const u8 *resp_ie, size_t resp_ie_len);
+int cfg80211_mgd_wext_connect(struct cfg80211_registered_device *rdev,
+                              struct wireless_dev *wdev);
 
 void cfg80211_conn_work(struct work_struct *work);
 
 /* internal helpers */
-int cfg80211_validate_key_settings(struct key_params *params, int key_idx,
+int cfg80211_validate_key_settings(struct cfg80211_registered_device *rdev,
+                                   struct key_params *params, int key_idx,
                                    const u8 *mac_addr);
 void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
                              size_t ie_len, u16 reason, bool from_ap);
@@ -335,5 +352,6 @@ void cfg80211_sme_scan_done(struct net_device *dev);
 void cfg80211_sme_rx_auth(struct net_device *dev, const u8 *buf, size_t len);
 void cfg80211_sme_disassoc(struct net_device *dev, int idx);
 void __cfg80211_scan_done(struct work_struct *wk);
+void cfg80211_upload_connect_keys(struct wireless_dev *wdev);
 
 #endif /* __NET_WIRELESS_CORE_H */