1 files changed, 108 insertions, 33 deletions

diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 88b0ba6c7484..a27921ee6e63 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -71,9 +71,6 @@ struct ieee80211_fragment_entry {
 
 
 struct ieee80211_bss {
-        /* Yes, this is a hack */
-        struct cfg80211_bss cbss;
-
         /* don't want to look up all the time */
         size_t ssid_len;
         u8 ssid[IEEE80211_MAX_SSID_LEN];
@@ -227,31 +224,78 @@ struct mesh_preq_queue {
         u8 flags;
 };
 
-enum ieee80211_mgd_state {
-        IEEE80211_MGD_STATE_IDLE,
-        IEEE80211_MGD_STATE_PROBE,
-        IEEE80211_MGD_STATE_AUTH,
-        IEEE80211_MGD_STATE_ASSOC,
+enum ieee80211_work_type {
+        IEEE80211_WORK_ABORT,
+        IEEE80211_WORK_DIRECT_PROBE,
+        IEEE80211_WORK_AUTH,
+        IEEE80211_WORK_ASSOC,
+        IEEE80211_WORK_REMAIN_ON_CHANNEL,
 };
 
-struct ieee80211_mgd_work {
+/**
+ * enum work_done_result - indicates what to do after work was done
+ *
+ * @WORK_DONE_DESTROY: This work item is no longer needed, destroy.
+ * @WORK_DONE_REQUEUE: This work item was reset to be reused, and
+ *      should be requeued.
+ */
+enum work_done_result {
+        WORK_DONE_DESTROY,
+        WORK_DONE_REQUEUE,
+};
+
+struct ieee80211_work {
         struct list_head list;
-        struct ieee80211_bss *bss;
-        int ie_len;
-        u8 prev_bssid[ETH_ALEN];
-        u8 ssid[IEEE80211_MAX_SSID_LEN];
-        u8 ssid_len;
+
+        struct rcu_head rcu_head;
+
+        struct ieee80211_sub_if_data *sdata;
+
+        enum work_done_result (*done)(struct ieee80211_work *wk,
+                                      struct sk_buff *skb);
+
+        struct ieee80211_channel *chan;
+        enum nl80211_channel_type chan_type;
+
         unsigned long timeout;
-        enum ieee80211_mgd_state state;
-        u16 auth_alg, auth_transaction;
+        enum ieee80211_work_type type;
 
-        int tries;
+        u8 filter_ta[ETH_ALEN];
+
+        bool started;
 
-        u8 key[WLAN_KEY_LEN_WEP104];
-        u8 key_len, key_idx;
+        union {
+                struct {
+                        int tries;
+                        u16 algorithm, transaction;
+                        u8 ssid[IEEE80211_MAX_SSID_LEN];
+                        u8 ssid_len;
+                        u8 key[WLAN_KEY_LEN_WEP104];
+                        u8 key_len, key_idx;
+                        bool privacy;
+                } probe_auth;
+                struct {
+                        struct cfg80211_bss *bss;
+                        const u8 *supp_rates;
+                        const u8 *ht_information_ie;
+                        enum ieee80211_smps_mode smps;
+                        int tries;
+                        u16 capability;
+                        u8 prev_bssid[ETH_ALEN];
+                        u8 ssid[IEEE80211_MAX_SSID_LEN];
+                        u8 ssid_len;
+                        u8 supp_rates_len;
+                        bool wmm_used, use_11n;
+                } assoc;
+                struct {
+                        u32 duration;
+                        bool started;
+                } remain;
+        };
 
+        int ie_len;
         /* must be last */
-        u8 ie[0]; /* for auth or assoc frame, not probe */
+        u8 ie[0];
 };
 
 /* flags used in struct ieee80211_if_managed.flags */
@@ -259,17 +303,11 @@ enum ieee80211_sta_flags {
         IEEE80211_STA_BEACON_POLL       = BIT(0),
         IEEE80211_STA_CONNECTION_POLL   = BIT(1),
         IEEE80211_STA_CONTROL_PORT      = BIT(2),
-        IEEE80211_STA_WMM_ENABLED       = BIT(3),
         IEEE80211_STA_DISABLE_11N       = BIT(4),
         IEEE80211_STA_CSA_RECEIVED      = BIT(5),
         IEEE80211_STA_MFP_ENABLED       = BIT(6),
 };
 
-/* flags for MLME request */
-enum ieee80211_sta_request {
-        IEEE80211_STA_REQ_SCAN,
-};
-
 struct ieee80211_if_managed {
         struct timer_list timer;
         struct timer_list conn_mon_timer;
@@ -284,14 +322,11 @@ struct ieee80211_if_managed {
         int probe_send_count;
 
         struct mutex mtx;
-        struct ieee80211_bss *associated;
-        struct ieee80211_mgd_work *old_associate_work;
-        struct list_head work_list;
+        struct cfg80211_bss *associated;
 
         u8 bssid[ETH_ALEN];
 
         u16 aid;
-        u16 capab;
 
         struct sk_buff_head skb_queue;
 
@@ -300,8 +335,6 @@ struct ieee80211_if_managed {
         enum ieee80211_smps_mode req_smps, /* requested smps mode */
                                  ap_smps; /* smps mode AP thinks we're in */
 
-        unsigned long request;
-
         unsigned int flags;
 
         u32 beacon_crc;
@@ -568,6 +601,15 @@ struct ieee80211_local {
         const struct ieee80211_ops *ops;
 
         /*
+         * work stuff, potentially off-channel (in the future)
+         */
+        struct mutex work_mtx;
+        struct list_head work_list;
+        struct timer_list work_timer;
+        struct work_struct work_work;
+        struct sk_buff_head work_skb_queue;
+
+        /*
          * private workqueue to mac80211. mac80211 makes this accessible
          * via ieee80211_queue_work()
          */
@@ -695,6 +737,10 @@ struct ieee80211_local {
         enum nl80211_channel_type oper_channel_type;
         struct ieee80211_channel *oper_channel, *csa_channel;
 
+        /* Temporary remain-on-channel for off-channel operations */
+        struct ieee80211_channel *tmp_channel;
+        enum nl80211_channel_type tmp_channel_type;
+
         /* SNMP counters */
         /* dot11CountersTable */
         u32 dot11TransmittedFragmentCount;
@@ -752,7 +798,7 @@ struct ieee80211_local {
         unsigned int wmm_acm; /* bit field of ACM bits (BIT(802.1D tag)) */
 
         bool pspolling;
-        bool scan_ps_enabled;
+        bool offchannel_ps_enabled;
         /*
          * PS can only be enabled when we have exactly one managed
          * interface (and monitors) in PS, this then points there.
@@ -947,6 +993,12 @@ ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
 void ieee80211_rx_bss_put(struct ieee80211_local *local,
                           struct ieee80211_bss *bss);
 
+/* off-channel helpers */
+void ieee80211_offchannel_stop_beaconing(struct ieee80211_local *local);
+void ieee80211_offchannel_stop_station(struct ieee80211_local *local);
+void ieee80211_offchannel_return(struct ieee80211_local *local,
+                                 bool enable_beaconing);
+
 /* interface handling */
 int ieee80211_iface_init(void);
 void ieee80211_iface_exit(void);
@@ -960,6 +1012,11 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local);
 u32 __ieee80211_recalc_idle(struct ieee80211_local *local);
 void ieee80211_recalc_idle(struct ieee80211_local *local);
 
+static inline bool ieee80211_sdata_running(struct ieee80211_sub_if_data *sdata)
+{
+        return netif_running(sdata->dev);
+}
+
 /* tx handling */
 void ieee80211_clear_tx_pending(struct ieee80211_local *local);
 void ieee80211_tx_pending(unsigned long data);
@@ -1106,6 +1163,24 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
 void ieee80211_recalc_smps(struct ieee80211_local *local,
                            struct ieee80211_sub_if_data *forsdata);
 
+size_t ieee80211_ie_split(const u8 *ies, size_t ielen,
+                          const u8 *ids, int n_ids, size_t offset);
+size_t ieee80211_ie_split_vendor(const u8 *ies, size_t ielen, size_t offset);
+
+/* internal work items */
+void ieee80211_work_init(struct ieee80211_local *local);
+void ieee80211_add_work(struct ieee80211_work *wk);
+void free_work(struct ieee80211_work *wk);
+void ieee80211_work_purge(struct ieee80211_sub_if_data *sdata);
+ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
+                                           struct sk_buff *skb);
+int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
+                                   struct ieee80211_channel *chan,
+                                   enum nl80211_channel_type channel_type,
+                                   unsigned int duration, u64 *cookie);
+int ieee80211_wk_cancel_remain_on_channel(
+        struct ieee80211_sub_if_data *sdata, u64 cookie);
+
 #ifdef CONFIG_MAC80211_NOINLINE
 #define debug_noinline noinline
 #else