Merge tag 'staging-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging tree patches from Greg Kroah-Hartman:
 "Here's the big staging tree merge for the 3.6-rc1 merge window.

  There are some patches in here outside of drivers/staging/, notibly
  the iio code (which is still stradeling the staging / not staging
  boundry), the pstore code, and the tracing code.  All of these have
  gotten acks from the various subsystem maintainers to be included in
  this tree.  The pstore and tracing patches are related, and are coming
  here as they replace one of the android staging drivers.

  Otherwise, the normal staging mess.  Lots of cleanups and a few new
  drivers (some iio drivers, and the large csr wireless driver
  abomination.)

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

Fixed up trivial conflicts in drivers/staging/comedi/drivers/s626.h and
drivers/staging/gdm72xx/netlink_k.c

* tag 'staging-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1108 commits)
  staging: csr: delete a bunch of unused library functions
  staging: csr: remove csr_utf16.c
  staging: csr: remove csr_pmem.h
  staging: csr: remove CsrPmemAlloc
  staging: csr: remove CsrPmemFree()
  staging: csr: remove CsrMemAllocDma()
  staging: csr: remove CsrMemCalloc()
  staging: csr: remove CsrMemAlloc()
  staging: csr: remove CsrMemFree() and CsrMemFreeDma()
  staging: csr: remove csr_util.h
  staging: csr: remove CsrOffSetOf()
  stating: csr: remove unneeded #includes in csr_util.c
  staging: csr: make CsrUInt16ToHex static
  staging: csr: remove CsrMemCpy()
  staging: csr: remove CsrStrLen()
  staging: csr: remove CsrVsnprintf()
  staging: csr: remove CsrStrDup
  staging: csr: remove CsrStrChr()
  staging: csr: remove CsrStrNCmp
  staging: csr: remove CsrStrCmp
  ...

1 files changed, 700 insertions, 0 deletions

diff --git a/drivers/staging/csr/unifi_event.c b/drivers/staging/csr/unifi_event.c
new file mode 100644
index 0000000..c27b23da
--- /dev/null
+++ b/drivers/staging/csr/unifi_event.c
@@ -0,0 +1,700 @@
+/*
+ * ***************************************************************************
+ *  FILE:     unifi_event.c
+ *
+ *  PURPOSE:
+ *      Process the signals received by UniFi.
+ *      It is part of the porting exercise.
+ *
+ * Copyright (C) 2009 by Cambridge Silicon Radio Ltd.
+ *
+ * Refer to LICENSE.txt included with this source code for details on
+ * the license terms.
+ *
+ * ***************************************************************************
+ */
+
+
+/*
+ * Porting notes:
+ * The implementation of unifi_receive_event() in Linux is fairly complicated.
+ * The linux driver support multiple userspace applications and several
+ * build configurations, so the received signals are processed by different
+ * processes and multiple times.
+ * In a simple implementation, this function needs to deliver:
+ * - The MLME-UNITDATA.ind signals to the Rx data plane and to the Traffic
+ *   Analysis using unifi_ta_sample().
+ * - The MLME-UNITDATA-STATUS.ind signals to the Tx data plane.
+ * - All the other signals to the SME using unifi_sys_hip_ind().
+ */
+
+#include "csr_wifi_hip_unifi.h"
+#include "csr_wifi_hip_conversions.h"
+#include "unifi_priv.h"
+
+
+/*
+ * ---------------------------------------------------------------------------
+ *  send_to_client
+ *
+ *      Helper for unifi_receive_event.
+ *
+ *      This function forwards a signal to one client.
+ *
+ *  Arguments:
+ *      priv        Pointer to driver's private data.
+ *      client      Pointer to the client structure.
+ *      receiver_id The reciever id of the signal.
+ *      sigdata     Pointer to the packed signal buffer.
+ *      siglen      Length of the packed signal.
+ *      bulkdata    Pointer to the signal's bulk data.
+ *
+ *  Returns:
+ *      None.
+ *
+ * ---------------------------------------------------------------------------
+ */
+static void send_to_client(unifi_priv_t *priv, ul_client_t *client,
+        int receiver_id,
+        unsigned char *sigdata, int siglen,
+        const bulk_data_param_t *bulkdata)
+{
+    if (client && client->event_hook) {
+        /*unifi_trace(priv, UDBG3,
+                "Receive: client %d, (s:0x%X, r:0x%X) - Signal 0x%.4X \n",
+                client->client_id, client->sender_id, receiver_id,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata));*/
+
+        client->event_hook(client, sigdata, siglen, bulkdata, UDI_TO_HOST);
+    }
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ *  process_pkt_data_ind
+ *
+ *      Dispatcher for received signals.
+ *
+ *      This function receives the 'to host' signals and forwards
+ *      them to the unifi linux clients.
+ *
+ *  Arguments:
+ *      priv         Context
+ *      sigdata      Pointer to the packed signal buffer(Its in form of MA-PACKET.ind).
+ *      bulkdata     Pointer to signal's bulkdata
+ *      freeBulkData Pointer to a flag which gets set if the bulkdata needs to
+ *                   be freed after calling the logging handlers. If it is not
+ *                   set the bulkdata must be freed by the MLME handler or
+ *                   passed to the network stack.
+ *  Returns:
+ *      TRUE if the packet should be routed to the SME etc.
+ *      FALSE if the packet is for the driver or network stack
+ * ---------------------------------------------------------------------------
+ */
+static u8 check_routing_pkt_data_ind(unifi_priv_t *priv,
+        u8 *sigdata,
+        const bulk_data_param_t* bulkdata,
+        u8 *freeBulkData,
+        netInterface_priv_t *interfacePriv)
+{
+    u16  frmCtrl, receptionStatus, frmCtrlSubType;
+    u8 *macHdrLocation;
+    u8 interfaceTag;
+    u8 isDataFrame;
+    u8 isProtocolVerInvalid = FALSE;
+    u8 isDataFrameSubTypeNoData = FALSE;
+
+#ifdef CSR_WIFI_SECURITY_WAPI_ENABLE
+    static const u8 wapiProtocolIdSNAPHeader[] = {0x88,0xb4};
+    static const u8 wapiProtocolIdSNAPHeaderOffset = 6;
+    u8 *destAddr;
+    u8 *srcAddr;
+    u8 isWapiUnicastPkt = FALSE;
+
+#ifdef CSR_WIFI_SECURITY_WAPI_QOSCTRL_MIC_WORKAROUND
+    u16 qosControl;
+#endif
+
+    u8 llcSnapHeaderOffset = 0;
+
+    destAddr = (u8 *) bulkdata->d[0].os_data_ptr + MAC_HEADER_ADDR1_OFFSET;
+    srcAddr  = (u8 *) bulkdata->d[0].os_data_ptr + MAC_HEADER_ADDR2_OFFSET;
+
+    /*Individual/Group bit - Bit 0 of first byte*/
+    isWapiUnicastPkt = (!(destAddr[0] & 0x01)) ? TRUE : FALSE;
+#endif
+
+#define CSR_WIFI_MA_PKT_IND_RECEPTION_STATUS_OFFSET    sizeof(CSR_SIGNAL_PRIMITIVE_HEADER) + 22
+
+    *freeBulkData = FALSE;
+
+    /* Fetch the MAC header location from  MA_PKT_IND packet */
+    macHdrLocation = (u8 *) bulkdata->d[0].os_data_ptr;
+    /* Fetch the Frame Control value from  MAC header */
+    frmCtrl = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(macHdrLocation);
+
+    /* Pull out interface tag from virtual interface identifier */
+    interfaceTag = (CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata + 14)) & 0xff;
+
+    /* check for MIC failure before processing the signal */
+    receptionStatus = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata + CSR_WIFI_MA_PKT_IND_RECEPTION_STATUS_OFFSET);
+
+    /* To discard any spurious MIC failures that could be reported by the firmware */
+    isDataFrame = ((frmCtrl & IEEE80211_FC_TYPE_MASK) == (IEEE802_11_FC_TYPE_DATA & IEEE80211_FC_TYPE_MASK)) ? TRUE : FALSE;
+    /* 0x00 is the only valid protocol version*/
+    isProtocolVerInvalid = (frmCtrl & IEEE80211_FC_PROTO_VERSION_MASK) ? TRUE : FALSE;
+    frmCtrlSubType = (frmCtrl & IEEE80211_FC_SUBTYPE_MASK) >> FRAME_CONTROL_SUBTYPE_FIELD_OFFSET;
+    /*Exclude the no data & reserved sub-types from MIC failure processing*/
+    isDataFrameSubTypeNoData = (((frmCtrlSubType>0x03)&&(frmCtrlSubType<0x08)) || (frmCtrlSubType>0x0B)) ? TRUE : FALSE;
+    if ((receptionStatus == CSR_MICHAEL_MIC_ERROR) &&
+        ((!isDataFrame) || isProtocolVerInvalid || (isDataFrame && isDataFrameSubTypeNoData))) {
+        /* Currently MIC errors are discarded for frames other than data frames. This might need changing when we start
+         * supporting 802.11w (Protected Management frames)
+         */
+        *freeBulkData = TRUE;
+        unifi_trace(priv, UDBG4, "Discarding this frame and ignoring the MIC failure as this is a garbage/non-data/no data frame\n");
+        return FALSE;
+     }
+
+#ifdef CSR_WIFI_SECURITY_WAPI_ENABLE
+
+    if (receptionStatus == CSR_MICHAEL_MIC_ERROR) {
+
+        if (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_STA) {
+
+#ifdef CSR_WIFI_SECURITY_WAPI_QOSCTRL_MIC_WORKAROUND
+            if ((isDataFrame) &&
+                ((IEEE802_11_FC_TYPE_QOS_DATA & IEEE80211_FC_SUBTYPE_MASK) == (frmCtrl & IEEE80211_FC_SUBTYPE_MASK)) &&
+                (priv->isWapiConnection))
+            {
+            	qosControl = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(macHdrLocation + (((frmCtrl & IEEE802_11_FC_TO_DS_MASK) && (frmCtrl & IEEE802_11_FC_FROM_DS_MASK)) ? 30 : 24) );
+
+            	unifi_trace(priv, UDBG4, "check_routing_pkt_data_ind() :: Value of the QoS control field - 0x%04x \n", qosControl);
+
+                if (qosControl & IEEE802_11_QC_NON_TID_BITS_MASK)
+                {
+                	unifi_trace(priv, UDBG4, "Ignore the MIC failure and pass the MPDU to the stack when any of bits [4-15] is set in the QoS control field\n");
+
+            		/*Exclude the MIC [16] and the PN [16] that are appended by the firmware*/
+            		((bulk_data_param_t*)bulkdata)->d[0].data_length = bulkdata->d[0].data_length - 32;
+
+            		/*Clear the reception status of the signal (CSR_RX_SUCCESS)*/
+            		*(sigdata + CSR_WIFI_MA_PKT_IND_RECEPTION_STATUS_OFFSET)     = 0x00;
+            		*(sigdata + CSR_WIFI_MA_PKT_IND_RECEPTION_STATUS_OFFSET+1)   = 0x00;
+
+            		*freeBulkData = FALSE;
+
+            		return FALSE;
+                }
+            }
+#endif
+            /* If this MIC ERROR reported by the firmware is either for
+             *    [1] a WAPI Multicast MPDU and the Multicast filter has NOT been set (It is set only when group key index (MSKID) = 1 in Group Rekeying)   OR
+             *    [2] a WAPI Unicast MPDU and either the CONTROL PORT is open or the WAPI Unicast filter or filter(s) is NOT set
+             * then report a MIC FAILURE indication to the SME.
+             */
+#ifndef CSR_WIFI_SECURITY_WAPI_SW_ENCRYPTION
+    	if ((priv->wapi_multicast_filter == 0) || isWapiUnicastPkt) {
+#else
+        /*When SW encryption is enabled and USKID=1 (wapi_unicast_filter = 1), we are expected
+		 *to receive MIC failure INDs for unicast MPDUs*/
+    	if ( ((priv->wapi_multicast_filter == 0) && !isWapiUnicastPkt) ||
+             ((priv->wapi_unicast_filter   == 0) &&  isWapiUnicastPkt) ) {
+#endif
+                /*Discard the frame*/
+                *freeBulkData = TRUE;
+                unifi_trace(priv, UDBG4, "Discarding the contents of the frame with MIC failure \n");
+
+                if (isWapiUnicastPkt &&
+                    ((uf_sme_port_state(priv,srcAddr,UF_CONTROLLED_PORT_Q,interfaceTag) != CSR_WIFI_ROUTER_CTRL_PORT_ACTION_8021X_PORT_OPEN)||
+#ifndef CSR_WIFI_SECURITY_WAPI_SW_ENCRYPTION
+                    (priv->wapi_unicast_filter) ||
+#endif
+                    (priv->wapi_unicast_queued_pkt_filter))) {
+
+                    /* Workaround to handle MIC failures reported by the firmware for encrypted packets from the AP
+                     * while we are in the process of re-association induced by unsupported WAPI Unicast key index
+                     *             - Discard the packets with MIC failures "until" we have
+                     *               a. negotiated a key,
+                     *               b. opened the CONTROL PORT and
+                     *               c. the AP has started using the new key
+                     */
+                    unifi_trace(priv, UDBG4, "Ignoring the MIC failure as either a. CONTROL PORT isn't OPEN or b. Unicast filter is set or c. WAPI AP using old key for buffered pkts\n");
+
+                    /*Ignore this MIC failure*/
+                    return FALSE;
+
+                }/*WAPI re-key specific workaround*/
+
+                unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind - MIC FAILURE : interfaceTag %x Src Addr %x:%x:%x:%x:%x:%x\n",
+                            interfaceTag, srcAddr[0], srcAddr[1], srcAddr[2], srcAddr[3], srcAddr[4], srcAddr[5]);
+                unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind - MIC FAILURE : Dest Addr %x:%x:%x:%x:%x:%x\n",
+                            destAddr[0], destAddr[1], destAddr[2], destAddr[3], destAddr[4], destAddr[5]);
+                unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind - MIC FAILURE : Control Port State - 0x%.4X \n",
+                            uf_sme_port_state(priv,srcAddr,UF_CONTROLLED_PORT_Q,interfaceTag));
+
+                unifi_error(priv, "MIC failure in %s\n", __FUNCTION__);
+
+                /*Report the MIC failure to the SME*/
+                return TRUE;
+            }
+        }/* STA mode */
+        else {
+            /* Its AP Mode . Just Return */
+            *freeBulkData = TRUE;
+            unifi_error(priv, "MIC failure in %s\n", __FUNCTION__);
+            return TRUE;
+         } /* AP mode */
+    }/* MIC error */
+#else
+    if (receptionStatus == CSR_MICHAEL_MIC_ERROR) {
+        *freeBulkData = TRUE;
+        unifi_error(priv, "MIC failure in %s\n", __FUNCTION__);
+        return TRUE;
+    }
+#endif /*CSR_WIFI_SECURITY_WAPI_ENABLE*/
+
+    unifi_trace(priv, UDBG4, "frmCtrl = 0x%04x %s\n",
+                frmCtrl,
+                (((frmCtrl & 0x000c)>>FRAME_CONTROL_TYPE_FIELD_OFFSET) == IEEE802_11_FRAMETYPE_MANAGEMENT) ?
+                    "Mgt" : "Ctrl/Data");
+
+#ifdef CSR_WIFI_SECURITY_WAPI_ENABLE
+    /* To ignore MIC failures reported due to the WAPI AP using the old key for queued packets before
+     * starting to use the new key negotiated as part of unicast re-keying
+     */
+    if ((interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_STA)&&
+        isWapiUnicastPkt &&
+        (receptionStatus == CSR_RX_SUCCESS) &&
+        (priv->wapi_unicast_queued_pkt_filter==1)) {
+
+        unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind(): WAPI unicast pkt received when the (wapi_unicast_queued_pkt_filter) is set\n");
+
+        if (isDataFrame) {
+            switch(frmCtrl & IEEE80211_FC_SUBTYPE_MASK) {
+                case IEEE802_11_FC_TYPE_QOS_DATA & IEEE80211_FC_SUBTYPE_MASK:
+                    llcSnapHeaderOffset = MAC_HEADER_SIZE + 2;
+                    break;
+                case IEEE802_11_FC_TYPE_QOS_NULL & IEEE80211_FC_SUBTYPE_MASK:
+                case IEEE802_11_FC_TYPE_NULL & IEEE80211_FC_SUBTYPE_MASK:
+                    break;
+                default:
+                    llcSnapHeaderOffset = MAC_HEADER_SIZE;
+            }
+        }
+
+        if (llcSnapHeaderOffset > 0) {
+        	/* QoS data or Data */
+            unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind(): SNAP header found & its offset %d\n",llcSnapHeaderOffset);
+            if (memcmp((u8 *)(bulkdata->d[0].os_data_ptr+llcSnapHeaderOffset+wapiProtocolIdSNAPHeaderOffset),
+                       wapiProtocolIdSNAPHeader,sizeof(wapiProtocolIdSNAPHeader))) {
+
+            	unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind(): This is a data & NOT a WAI protocol packet\n");
+                /* On the first unicast data pkt that is decrypted successfully after re-keying, reset the filter */
+                priv->wapi_unicast_queued_pkt_filter = 0;
+                unifi_trace(priv, UDBG4, "check_routing_pkt_data_ind(): WAPI AP has started using the new unicast key, no more MIC failures expected (reset filter)\n");
+            }
+            else {
+                unifi_trace(priv, UDBG6, "check_routing_pkt_data_ind(): WAPI - This is a WAI protocol packet\n");
+            }
+        }
+	}
+#endif
+
+
+    switch ((frmCtrl & 0x000c)>>FRAME_CONTROL_TYPE_FIELD_OFFSET) {
+        case IEEE802_11_FRAMETYPE_MANAGEMENT:
+            *freeBulkData = TRUE;       /* Free (after SME handler copies it) */
+
+            /* In P2P device mode, filter the legacy AP beacons here */
+            if((interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_P2P)&&\
+               ((CSR_WIFI_80211_GET_FRAME_SUBTYPE(macHdrLocation)) == CSR_WIFI_80211_FRAME_SUBTYPE_BEACON)){
+
+                u8 *pSsid, *pSsidLen;
+                static u8 P2PWildCardSsid[CSR_WIFI_P2P_WILDCARD_SSID_LENGTH] = {'D', 'I', 'R', 'E', 'C', 'T', '-'};
+
+                pSsidLen = macHdrLocation + MAC_HEADER_SIZE + CSR_WIFI_BEACON_FIXED_LENGTH;
+                pSsid = pSsidLen + 2;
+
+                if(*(pSsidLen + 1) >= CSR_WIFI_P2P_WILDCARD_SSID_LENGTH){
+                    if(memcmp(pSsid, P2PWildCardSsid, CSR_WIFI_P2P_WILDCARD_SSID_LENGTH) == 0){
+                        unifi_trace(priv, UDBG6, "Received a P2P Beacon, pass it to SME\n");
+                        return TRUE;
+                    }
+                }
+                unifi_trace(priv, UDBG6, "Received a Legacy AP beacon in P2P mode, drop it\n");
+                return FALSE;
+            }
+            return TRUE;                /* Route to SME */
+        case IEEE802_11_FRAMETYPE_DATA:
+        case IEEE802_11_FRAMETYPE_CONTROL:
+            *freeBulkData = FALSE;      /* Network stack or MLME handler frees */
+            return FALSE;
+        default:
+            unifi_error(priv, "Unhandled frame type %04x\n", frmCtrl);
+            *freeBulkData = TRUE;       /* Not interested, but must free it */
+            return FALSE;
+    }
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ *  unifi_process_receive_event
+ *
+ *      Dispatcher for received signals.
+ *
+ *      This function receives the 'to host' signals and forwards
+ *      them to the unifi linux clients.
+ *
+ *  Arguments:
+ *      ospriv      Pointer to driver's private data.
+ *      sigdata     Pointer to the packed signal buffer.
+ *      siglen      Length of the packed signal.
+ *      bulkdata    Pointer to the signal's bulk data.
+ *
+ *  Returns:
+ *      None.
+ *
+ *  Notes:
+ *  The signals are received in the format described in the host interface
+ *  specification, i.e wire formatted. Certain clients use the same format
+ *  to interpret them and other clients use the host formatted structures.
+ *  Each client has to call read_unpack_signal() to transform the wire
+ *  formatted signal into the host formatted signal, if necessary.
+ *  The code is in the core, since the signals are defined therefore
+ *  binded to the host interface specification.
+ * ---------------------------------------------------------------------------
+ */
+static void
+unifi_process_receive_event(void *ospriv,
+                            u8 *sigdata, u32 siglen,
+                            const bulk_data_param_t *bulkdata)
+{
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+    int i, receiver_id;
+    int client_id;
+    s16 signal_id;
+    u8 pktIndToSme = FALSE, freeBulkData = FALSE;
+
+    func_enter();
+
+    unifi_trace(priv, UDBG5, "unifi_process_receive_event: "
+                "%04x %04x %04x %04x %04x %04x %04x %04x (%d)\n",
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*0) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*1) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*2) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*3) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*4) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*5) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*6) & 0xFFFF,
+                CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*7) & 0xFFFF,
+                siglen);
+
+    receiver_id = CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)) & 0xFF00;
+    client_id = (receiver_id & 0x0F00) >> UDI_SENDER_ID_SHIFT;
+    signal_id = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata);
+
+
+
+    /* check for the type of frame received (checks for 802.11 management frames) */
+    if (signal_id == CSR_MA_PACKET_INDICATION_ID)
+    {
+#define CSR_MA_PACKET_INDICATION_INTERFACETAG_OFFSET    14
+        u8 interfaceTag;
+        netInterface_priv_t *interfacePriv;
+
+        /* Pull out interface tag from virtual interface identifier */
+        interfaceTag = (CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata + CSR_MA_PACKET_INDICATION_INTERFACETAG_OFFSET)) & 0xff;
+        interfacePriv = priv->interfacePriv[interfaceTag];
+
+        /* Update activity for this station in case of IBSS */
+#ifdef CSR_SUPPORT_SME
+        if (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_IBSS)
+        {
+            u8 *saddr;
+            /* Fetch the source address from  mac header */
+            saddr = (u8 *) bulkdata->d[0].os_data_ptr + MAC_HEADER_ADDR2_OFFSET;
+            unifi_trace(priv, UDBG5,
+                                    "Updating sta activity in IBSS interfaceTag %x Src Addr %x:%x:%x:%x:%x:%x\n",
+                                    interfaceTag, saddr[0], saddr[1], saddr[2], saddr[3], saddr[4], saddr[5]);
+
+            uf_update_sta_activity(priv, interfaceTag, saddr);
+        }
+#endif
+
+        pktIndToSme = check_routing_pkt_data_ind(priv, sigdata, bulkdata, &freeBulkData, interfacePriv);
+
+        unifi_trace(priv, UDBG6, "RX: packet entry point to driver from HIP,pkt to SME ?(%s) \n", (pktIndToSme)? "YES":"NO");
+
+    }
+
+    if (pktIndToSme)
+    {
+        /* Management MA_PACKET_IND for SME */
+        if(sigdata != NULL && bulkdata != NULL){
+            send_to_client(priv, priv->sme_cli, receiver_id, sigdata, siglen, bulkdata);
+        }
+        else{
+            unifi_error(priv, "unifi_receive_event2: sigdata or Bulkdata is NULL \n");
+        }
+#ifdef CSR_NATIVE_LINUX
+        send_to_client(priv, priv->wext_client,
+                receiver_id,
+                sigdata, siglen, bulkdata);
+#endif
+    }
+    else
+    {
+        /* Signals with ReceiverId==0 are also reported to SME / WEXT,
+         * unless they are data/control MA_PACKET_INDs or VIF_AVAILABILITY_INDs
+         */
+        if (!receiver_id) {
+               if(signal_id == CSR_MA_VIF_AVAILABILITY_INDICATION_ID) {
+                      uf_process_ma_vif_availibility_ind(priv, sigdata, siglen);
+               }
+               else if (signal_id != CSR_MA_PACKET_INDICATION_ID) {
+                      send_to_client(priv, priv->sme_cli, receiver_id, sigdata, siglen, bulkdata);
+#ifdef CSR_NATIVE_LINUX
+                      send_to_client(priv, priv->wext_client,
+                                     receiver_id,
+                                     sigdata, siglen, bulkdata);
+#endif
+               }
+               else
+               {
+
+#if (defined(CSR_SUPPORT_SME) && defined(CSR_WIFI_SECURITY_WAPI_ENABLE))
+                   #define CSR_MA_PACKET_INDICATION_RECEPTION_STATUS_OFFSET    sizeof(CSR_SIGNAL_PRIMITIVE_HEADER) + 22
+                   netInterface_priv_t *interfacePriv;
+                   u8 interfaceTag;
+                   u16 receptionStatus = CSR_RX_SUCCESS;
+
+                   /* Pull out interface tag from virtual interface identifier */
+                   interfaceTag = (CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata + CSR_MA_PACKET_INDICATION_INTERFACETAG_OFFSET)) & 0xff;
+                   interfacePriv = priv->interfacePriv[interfaceTag];
+
+                   /* check for MIC failure */
+                   receptionStatus = CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata + CSR_MA_PACKET_INDICATION_RECEPTION_STATUS_OFFSET);
+
+                   /* Send a WAPI MPDU to SME for re-check MIC if the respective filter has been set*/
+                   if ((!freeBulkData) &&
+                       (interfacePriv->interfaceMode == CSR_WIFI_ROUTER_CTRL_MODE_STA) &&
+                       (receptionStatus == CSR_MICHAEL_MIC_ERROR) &&
+                       ((priv->wapi_multicast_filter == 1)
+#ifdef CSR_WIFI_SECURITY_WAPI_SW_ENCRYPTION
+                         || (priv->wapi_unicast_filter == 1)
+#endif
+                       ))
+                   {
+                       CSR_SIGNAL signal;
+                       u8 *destAddr;
+                       CsrResult res;
+                       u16 interfaceTag = 0;
+                       u8 isMcastPkt = TRUE;
+
+                       unifi_trace(priv, UDBG6, "Received a WAPI data packet when the Unicast/Multicast filter is set\n");
+                       res = read_unpack_signal(sigdata, &signal);
+                       if (res) {
+                           unifi_error(priv, "Received unknown or corrupted signal (0x%x).\n",
+                                       CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sigdata));
+                           return;
+                       }
+
+                       /* Check if the type of MPDU and the respective filter status*/
+                       destAddr = (u8 *) bulkdata->d[0].os_data_ptr + MAC_HEADER_ADDR1_OFFSET;
+                       isMcastPkt = (destAddr[0] & 0x01) ? TRUE : FALSE;
+                       unifi_trace(priv, UDBG6,
+                                   "1.MPDU type: (%s), 2.Multicast filter: (%s), 3. Unicast filter: (%s)\n",
+                                   ((isMcastPkt) ? "Multiast":"Unicast"),
+                                   ((priv->wapi_multicast_filter) ? "Enabled":"Disabled"),
+                                   ((priv->wapi_unicast_filter)  ? "Enabled":"Disabled"));
+
+                       if (((isMcastPkt) && (priv->wapi_multicast_filter == 1))
+#ifdef CSR_WIFI_SECURITY_WAPI_SW_ENCRYPTION
+                           || ((!isMcastPkt) && (priv->wapi_unicast_filter == 1))
+#endif
+                          )
+                        {
+                            unifi_trace(priv, UDBG4, "Sending the WAPI MPDU for MIC check\n");
+                            CsrWifiRouterCtrlWapiRxMicCheckIndSend(priv->CSR_WIFI_SME_IFACEQUEUE, 0, interfaceTag, siglen, sigdata, bulkdata->d[0].data_length, (u8*)bulkdata->d[0].os_data_ptr);
+
+                            for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
+                                if (bulkdata->d[i].data_length != 0) {
+                                    unifi_net_data_free(priv, (void *)&bulkdata->d[i]);
+                                }
+                           }
+                           func_exit();
+                           return;
+                       }
+                   } /* CSR_MA_PACKET_INDICATION_ID */
+#endif /*CSR_SUPPORT_SME && CSR_WIFI_SECURITY_WAPI_ENABLE*/
+               }
+        }
+
+        /* calls the registered clients handler callback func.
+         * netdev_mlme_event_handler is one of the registered handler used to route
+         * data packet to network stack or AMP/EAPOL related data to SME
+         *
+         * The freeBulkData check ensures that, it has received a management frame and
+         * the frame needs to be freed here. So not to be passed to netdev handler
+         */
+        if(!freeBulkData){
+            if ((client_id < MAX_UDI_CLIENTS) &&
+                    (&priv->ul_clients[client_id] != priv->logging_client)) {
+            	unifi_trace(priv, UDBG6, "Call the registered clients handler callback func\n");
+                send_to_client(priv, &priv->ul_clients[client_id],
+                        receiver_id,
+                        sigdata, siglen, bulkdata);
+            }
+        }
+    }
+
+    /*
+     * Free bulk data buffers here unless it is a CSR_MA_PACKET_INDICATION
+     */
+    switch (signal_id)
+    {
+#ifdef UNIFI_SNIFF_ARPHRD
+        case CSR_MA_SNIFFDATA_INDICATION_ID:
+#endif
+            break;
+
+        case CSR_MA_PACKET_INDICATION_ID:
+            if (!freeBulkData)
+            {
+                break;
+            }
+            /* FALLS THROUGH... */
+        default:
+            for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
+                if (bulkdata->d[i].data_length != 0) {
+                    unifi_net_data_free(priv, (void *)&bulkdata->d[i]);
+                }
+            }
+    }
+
+    func_exit();
+} /* unifi_process_receive_event() */
+
+
+#ifdef CSR_WIFI_RX_PATH_SPLIT
+static u8 signal_buffer_is_full(unifi_priv_t* priv)
+{
+    return (((priv->rxSignalBuffer.writePointer + 1)% priv->rxSignalBuffer.size) == (priv->rxSignalBuffer.readPointer));
+}
+
+void unifi_rx_queue_flush(void *ospriv)
+{
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+
+    func_enter();
+    unifi_trace(priv, UDBG4, "rx_wq_handler: RdPtr = %d WritePtr =  %d\n",
+                priv->rxSignalBuffer.readPointer,priv->rxSignalBuffer.writePointer);
+    if(priv != NULL) {
+        u8 readPointer = priv->rxSignalBuffer.readPointer;
+        while (readPointer != priv->rxSignalBuffer.writePointer)
+        {
+             rx_buff_struct_t *buf = &priv->rxSignalBuffer.rx_buff[readPointer];
+             unifi_trace(priv, UDBG6, "rx_wq_handler: RdPtr = %d WritePtr =  %d\n",
+                         readPointer,priv->rxSignalBuffer.writePointer);
+             unifi_process_receive_event(priv, buf->bufptr, buf->sig_len, &buf->data_ptrs);
+             readPointer ++;
+             if(readPointer >= priv->rxSignalBuffer.size) {
+                    readPointer = 0;
+             }
+        }
+        priv->rxSignalBuffer.readPointer = readPointer;
+    }
+    func_exit();
+}
+
+void rx_wq_handler(struct work_struct *work)
+{
+    unifi_priv_t *priv = container_of(work, unifi_priv_t, rx_work_struct);
+    unifi_rx_queue_flush(priv);
+}
+#endif
+
+
+
+/*
+ * ---------------------------------------------------------------------------
+ *  unifi_receive_event
+ *
+ *      Dispatcher for received signals.
+ *
+ *      This function receives the 'to host' signals and forwards
+ *      them to the unifi linux clients.
+ *
+ *  Arguments:
+ *      ospriv      Pointer to driver's private data.
+ *      sigdata     Pointer to the packed signal buffer.
+ *      siglen      Length of the packed signal.
+ *      bulkdata    Pointer to the signal's bulk data.
+ *
+ *  Returns:
+ *      None.
+ *
+ *  Notes:
+ *  The signals are received in the format described in the host interface
+ *  specification, i.e wire formatted. Certain clients use the same format
+ *  to interpret them and other clients use the host formatted structures.
+ *  Each client has to call read_unpack_signal() to transform the wire
+ *  formatted signal into the host formatted signal, if necessary.
+ *  The code is in the core, since the signals are defined therefore
+ *  binded to the host interface specification.
+ * ---------------------------------------------------------------------------
+ */
+void
+unifi_receive_event(void *ospriv,
+                    u8 *sigdata, u32 siglen,
+                    const bulk_data_param_t *bulkdata)
+{
+#ifdef CSR_WIFI_RX_PATH_SPLIT
+    unifi_priv_t *priv = (unifi_priv_t*)ospriv;
+    u8 writePointer;
+    int i;
+    rx_buff_struct_t * rx_buff;
+    func_enter();
+
+    unifi_trace(priv, UDBG5, "unifi_receive_event: "
+            "%04x %04x %04x %04x %04x %04x %04x %04x (%d)\n",
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*0) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*1) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*2) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*3) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*4) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*5) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*6) & 0xFFFF,
+            CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sigdata) + sizeof(s16)*7) & 0xFFFF, siglen);
+    if(signal_buffer_is_full(priv)) {
+        unifi_error(priv,"TO HOST signal queue FULL dropping the PDU\n");
+        for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
+            if (bulkdata->d[i].data_length != 0) {
+                unifi_net_data_free(priv, (void *)&bulkdata->d[i]);
+            }
+        }
+        return;
+    }
+    writePointer = priv->rxSignalBuffer.writePointer;
+    rx_buff = &priv->rxSignalBuffer.rx_buff[writePointer];
+    memcpy(rx_buff->bufptr,sigdata,siglen);
+    rx_buff->sig_len = siglen;
+    rx_buff->data_ptrs = *bulkdata;
+    writePointer++;
+    if(writePointer >= priv->rxSignalBuffer.size) {
+        writePointer =0;
+    }
+    unifi_trace(priv, UDBG4, "unifi_receive_event:writePtr = %d\n",priv->rxSignalBuffer.writePointer);
+    priv->rxSignalBuffer.writePointer = writePointer;
+
+#ifndef CSR_WIFI_RX_PATH_SPLIT_DONT_USE_WQ
+    queue_work(priv->rx_workqueue, &priv->rx_work_struct);
+#endif
+
+#else
+    unifi_process_receive_event(ospriv, sigdata, siglen, bulkdata);
+#endif
+    func_exit();
+} /* unifi_receive_event() */
+