diff options
Diffstat (limited to 'drivers/staging/csr/unifi_event.c')
| -rw-r--r-- | drivers/staging/csr/unifi_event.c | 692 |
1 files changed, 0 insertions, 692 deletions
diff --git a/drivers/staging/csr/unifi_event.c b/drivers/staging/csr/unifi_event.c deleted file mode 100644 index 71fdb2180e3d..000000000000 --- a/drivers/staging/csr/unifi_event.c +++ /dev/null @@ -1,692 +0,0 @@ -/* - * *************************************************************************** - * 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; - - 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]); - } - } - 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]); - } - } - } - -} /* 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; - - 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; - } -} - -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; - - 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 -} /* unifi_receive_event() */ - |