mwifiex: add AP event handling framework

Added logic to handle AP event that are generated
by the firmware. As MLME/SME is implemented in the
firmware, events such as station association and
deauthentication, must be sent to userspace (hostapd)
for creating and deleting station database.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Yogesh Powar <yogeshp@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 73 insertions, 2 deletions

diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 8ae9b682131..e7882e56950 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -1237,6 +1237,11 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
                 goto done;
         }
 
+        if (priv->bss_mode == NL80211_IFTYPE_AP) {
+                wiphy_err(wiphy, "skip association request for AP interface\n");
+                goto done;
+        }
+
         wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
                   (char *) sme->ssid, sme->bssid);
 
diff --git a/drivers/net/wireless/mwifiex/fw.h b/drivers/net/wireless/mwifiex/fw.h
index 07243c04454..77f82fc811e 100644
--- a/drivers/net/wireless/mwifiex/fw.h
+++ b/drivers/net/wireless/mwifiex/fw.h
@@ -117,6 +117,7 @@ enum MWIFIEX_802_11_PRIVACY_FILTER {
 #define TLV_TYPE_POWER_GROUP        (PROPRIETARY_TLV_BASE_ID + 84)
 #define TLV_TYPE_UAP_RETRY_LIMIT    (PROPRIETARY_TLV_BASE_ID + 93)
 #define TLV_TYPE_WAPI_IE            (PROPRIETARY_TLV_BASE_ID + 94)
+#define TLV_TYPE_UAP_MGMT_FRAME     (PROPRIETARY_TLV_BASE_ID + 104)
 #define TLV_TYPE_MGMT_IE            (PROPRIETARY_TLV_BASE_ID + 105)
 #define TLV_TYPE_AUTO_DS_PARAM      (PROPRIETARY_TLV_BASE_ID + 113)
 #define TLV_TYPE_PS_PARAM           (PROPRIETARY_TLV_BASE_ID + 114)
@@ -324,15 +325,20 @@ enum ENH_PS_MODES {
 #define EVENT_DATA_SNR_HIGH             0x00000027
 #define EVENT_LINK_QUALITY              0x00000028
 #define EVENT_PORT_RELEASE              0x0000002b
+#define EVENT_UAP_STA_DEAUTH            0x0000002c
+#define EVENT_UAP_STA_ASSOC             0x0000002d
+#define EVENT_UAP_BSS_START             0x0000002e
 #define EVENT_PRE_BEACON_LOST           0x00000031
 #define EVENT_ADDBA                     0x00000033
 #define EVENT_DELBA                     0x00000034
 #define EVENT_BA_STREAM_TIEMOUT         0x00000037
 #define EVENT_AMSDU_AGGR_CTRL           0x00000042
+#define EVENT_UAP_BSS_IDLE              0x00000043
+#define EVENT_UAP_BSS_ACTIVE            0x00000044
 #define EVENT_WEP_ICV_ERR               0x00000046
 #define EVENT_HS_ACT_REQ                0x00000047
 #define EVENT_BW_CHANGE                 0x00000048
-
+#define EVENT_UAP_MIC_COUNTERMEASURES   0x0000004c
 #define EVENT_HOSTWAKE_STAIE            0x0000004d
 
 #define EVENT_ID_MASK                   0xffff
@@ -1119,6 +1125,16 @@ struct host_cmd_tlv {
         __le16 len;
 } __packed;
 
+struct mwifiex_assoc_event {
+        u8 sta_addr[ETH_ALEN];
+        __le16 type;
+        __le16 len;
+        __le16 frame_control;
+        __le16 cap_info;
+        __le16 listen_interval;
+        u8 data[0];
+} __packed;
+
 struct host_cmd_ds_sys_config {
         __le16 action;
         u8 tlv[0];
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index acea8d41c04..b0a8338d2c8 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -116,6 +116,7 @@ enum {
 #define MAX_FREQUENCY_BAND_BG   2484
 
 #define MWIFIEX_EVENT_HEADER_LEN           4
+#define MWIFIEX_UAP_EVENT_EXTRA_HEADER     2
 
 #define MWIFIEX_TYPE_LEN                        4
 #define MWIFIEX_USB_TYPE_CMD                    0xF00DFACE
diff --git a/drivers/net/wireless/mwifiex/sta_event.c b/drivers/net/wireless/mwifiex/sta_event.c
index f6bbb9307f8..4ace5a3dcd2 100644
--- a/drivers/net/wireless/mwifiex/sta_event.c
+++ b/drivers/net/wireless/mwifiex/sta_event.c
@@ -184,8 +184,10 @@ mwifiex_reset_connect_state(struct mwifiex_private *priv)
 int mwifiex_process_sta_event(struct mwifiex_private *priv)
 {
         struct mwifiex_adapter *adapter = priv->adapter;
-        int ret = 0;
+        int len, ret = 0;
         u32 eventcause = adapter->event_cause;
+        struct station_info sinfo;
+        struct mwifiex_assoc_event *event;
 
         switch (eventcause) {
         case EVENT_DUMMY_HOST_WAKEUP_SIGNAL:
@@ -402,6 +404,53 @@ int mwifiex_process_sta_event(struct mwifiex_private *priv)
         case EVENT_HOSTWAKE_STAIE:
                 dev_dbg(adapter->dev, "event: HOSTWAKE_STAIE %d\n", eventcause);
                 break;
+
+        case EVENT_UAP_STA_ASSOC:
+                skb_pull(adapter->event_skb, MWIFIEX_UAP_EVENT_EXTRA_HEADER);
+                memset(&sinfo, 0, sizeof(sinfo));
+                event = (struct mwifiex_assoc_event *)adapter->event_skb->data;
+                if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
+                        len = -1;
+
+                        if (ieee80211_is_assoc_req(event->frame_control))
+                                len = 0;
+                        else if (ieee80211_is_reassoc_req(event->frame_control))
+                                /* There will be ETH_ALEN bytes of
+                                 * current_ap_addr before the re-assoc ies.
+                                 */
+                                len = ETH_ALEN;
+
+                        if (len != -1) {
+                                sinfo.filled = STATION_INFO_ASSOC_REQ_IES;
+                                sinfo.assoc_req_ies = (u8 *)&event->data[len];
+                                len = (u8 *)sinfo.assoc_req_ies -
+                                      (u8 *)&event->frame_control;
+                                sinfo.assoc_req_ies_len =
+                                        le16_to_cpu(event->len) - (u16)len;
+                        }
+                }
+                cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
+                                 GFP_KERNEL);
+                break;
+        case EVENT_UAP_STA_DEAUTH:
+                skb_pull(adapter->event_skb, MWIFIEX_UAP_EVENT_EXTRA_HEADER);
+                cfg80211_del_sta(priv->netdev, adapter->event_skb->data,
+                                 GFP_KERNEL);
+                break;
+        case EVENT_UAP_BSS_IDLE:
+                priv->media_connected = false;
+                break;
+        case EVENT_UAP_BSS_ACTIVE:
+                priv->media_connected = true;
+                break;
+        case EVENT_UAP_BSS_START:
+                dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
+                memcpy(priv->netdev->dev_addr, adapter->event_body+2, ETH_ALEN);
+                break;
+        case EVENT_UAP_MIC_COUNTERMEASURES:
+                /* For future development */
+                dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
+                break;
         default:
                 dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
                         eventcause);