2010-09-08 21:46:36 +00:00
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/**
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@file HandleControlPacket.c
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This file contains the routines to deal with
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sending and receiving of control packets.
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*/
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#include "headers.h"
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/**
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When a control packet is received, analyze the
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"status" and call appropriate response function.
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Enqueue the control packet for Application.
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@return None
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*/
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VOID handle_rx_control_packet(PMINI_ADAPTER Adapter, /**<Pointer to the Adapter structure*/
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struct sk_buff *skb) /**<Pointer to the socket buffer*/
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{
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PPER_TARANG_DATA pTarang = NULL;
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BOOLEAN HighPriorityMessage = FALSE;
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struct sk_buff * newPacket = NULL;
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CHAR cntrl_msg_mask_bit = 0;
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BOOLEAN drop_pkt_flag = TRUE ;
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USHORT usStatus = *(PUSHORT)(skb->data);
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BCM_DEBUG_PRINT( Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "=====>");
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/* Get the Leader field */
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switch(usStatus)
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{
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case CM_RESPONSES: // 0xA0
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BCM_DEBUG_PRINT( Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "MAC Version Seems to be Non Multi-Classifier, rejected by Driver");
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HighPriorityMessage = TRUE ;
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break;
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case CM_CONTROL_NEWDSX_MULTICLASSIFIER_RESP:
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HighPriorityMessage = TRUE ;
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if(Adapter->LinkStatus==LINKUP_DONE)
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{
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CmControlResponseMessage(Adapter,(skb->data +sizeof(USHORT)));
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}
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break;
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case LINK_CONTROL_RESP: //0xA2
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case STATUS_RSP: //0xA1
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BCM_DEBUG_PRINT( Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL,"LINK_CONTROL_RESP");
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HighPriorityMessage = TRUE ;
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LinkControlResponseMessage(Adapter,(skb->data + sizeof(USHORT)));
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break;
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case STATS_POINTER_RESP: //0xA6
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HighPriorityMessage = TRUE ;
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StatisticsResponse(Adapter, (skb->data + sizeof(USHORT)));
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break;
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case IDLE_MODE_STATUS: //0xA3
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL,"IDLE_MODE_STATUS Type Message Got from F/W");
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InterfaceIdleModeRespond(Adapter, (PUINT)(skb->data +
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sizeof(USHORT)));
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HighPriorityMessage = TRUE ;
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break;
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case AUTH_SS_HOST_MSG:
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HighPriorityMessage = TRUE ;
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break;
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default:
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BCM_DEBUG_PRINT( Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL,"Got Default Response");
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/* Let the Application Deal with This Packet */
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break;
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}
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//Queue The Control Packet to The Application Queues
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down(&Adapter->RxAppControlQueuelock);
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for (pTarang = Adapter->pTarangs; pTarang; pTarang = pTarang->next)
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{
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if(Adapter->device_removed)
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{
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break;
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}
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drop_pkt_flag = TRUE ;
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/*
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There are cntrl msg from A0 to AC. It has been mapped to 0 to C bit in the cntrl mask.
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Also, by default AD to BF has been masked to the rest of the bits... which wil be ON by default.
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if mask bit is enable to particular pkt status, send it out to app else stop it.
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*/
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cntrl_msg_mask_bit = (usStatus & 0x1F);
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//printk("\ninew msg mask bit which is disable in mask:%X", cntrl_msg_mask_bit);
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if(pTarang->RxCntrlMsgBitMask & (1<<cntrl_msg_mask_bit))
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drop_pkt_flag = FALSE;
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if ((drop_pkt_flag == TRUE) || (pTarang->AppCtrlQueueLen > MAX_APP_QUEUE_LEN) ||
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((pTarang->AppCtrlQueueLen > MAX_APP_QUEUE_LEN/2) && (HighPriorityMessage == FALSE)))
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{
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/*
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Assumption:-
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1. every tarang manages it own dropped pkt statitistics
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2. Total packet dropped per tarang will be equal to the sum of all types of dropped
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pkt by that tarang only.
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*/
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switch(*(PUSHORT)skb->data)
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{
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case CM_RESPONSES:
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pTarang->stDroppedAppCntrlMsgs.cm_responses++;
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break;
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case CM_CONTROL_NEWDSX_MULTICLASSIFIER_RESP:
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pTarang->stDroppedAppCntrlMsgs.cm_control_newdsx_multiclassifier_resp++;
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break;
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case LINK_CONTROL_RESP:
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pTarang->stDroppedAppCntrlMsgs.link_control_resp++;
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break;
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case STATUS_RSP:
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pTarang->stDroppedAppCntrlMsgs.status_rsp++;
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break;
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case STATS_POINTER_RESP:
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pTarang->stDroppedAppCntrlMsgs.stats_pointer_resp++;
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break;
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case IDLE_MODE_STATUS:
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pTarang->stDroppedAppCntrlMsgs.idle_mode_status++ ;
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break;
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case AUTH_SS_HOST_MSG:
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pTarang->stDroppedAppCntrlMsgs.auth_ss_host_msg++ ;
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break;
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default:
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pTarang->stDroppedAppCntrlMsgs.low_priority_message++ ;
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break;
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}
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continue;
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}
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newPacket = skb_clone(skb, GFP_KERNEL);
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if (!newPacket)
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break;
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ENQUEUEPACKET(pTarang->RxAppControlHead,pTarang->RxAppControlTail,
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newPacket);
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pTarang->AppCtrlQueueLen++;
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}
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up(&Adapter->RxAppControlQueuelock);
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wake_up(&Adapter->process_read_wait_queue);
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2010-11-01 13:35:21 +00:00
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dev_kfree_skb(skb);
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2010-09-08 21:46:36 +00:00
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BCM_DEBUG_PRINT( Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "After wake_up_interruptible");
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}
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/**
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@ingroup ctrl_pkt_functions
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Thread to handle control pkt reception
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*/
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int control_packet_handler (PMINI_ADAPTER Adapter /**< pointer to adapter object*/
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)
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{
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struct sk_buff *ctrl_packet= NULL;
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unsigned long flags = 0;
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//struct timeval tv ;
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//int *puiBuffer = NULL ;
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "Entering to make thread wait on control packet event!");
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while(1)
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{
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wait_event_interruptible(Adapter->process_rx_cntrlpkt,
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atomic_read(&Adapter->cntrlpktCnt) ||
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Adapter->bWakeUpDevice ||
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kthread_should_stop()
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);
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if(kthread_should_stop())
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "Exiting \n");
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return 0;
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}
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if(TRUE == Adapter->bWakeUpDevice)
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{
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Adapter->bWakeUpDevice = FALSE;
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if((FALSE == Adapter->bTriedToWakeUpFromlowPowerMode) &&
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((TRUE == Adapter->IdleMode)|| (TRUE == Adapter->bShutStatus)))
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{
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BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, CP_CTRL_PKT, DBG_LVL_ALL, "Calling InterfaceAbortIdlemode\n");
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// Adapter->bTriedToWakeUpFromlowPowerMode = TRUE;
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InterfaceIdleModeWakeup (Adapter);
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}
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continue;
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}
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while(atomic_read(&Adapter->cntrlpktCnt))
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{
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spin_lock_irqsave(&Adapter->control_queue_lock, flags);
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ctrl_packet = Adapter->RxControlHead;
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if(ctrl_packet)
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{
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DEQUEUEPACKET(Adapter->RxControlHead,Adapter->RxControlTail);
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// Adapter->RxControlHead=ctrl_packet->next;
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}
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spin_unlock_irqrestore (&Adapter->control_queue_lock, flags);
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handle_rx_control_packet(Adapter, ctrl_packet);
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atomic_dec(&Adapter->cntrlpktCnt);
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}
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SetUpTargetDsxBuffers(Adapter);
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}
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return STATUS_SUCCESS;
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}
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2010-09-30 08:24:12 +00:00
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INT flushAllAppQ(void)
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2010-09-08 21:46:36 +00:00
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{
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PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
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PPER_TARANG_DATA pTarang = NULL;
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struct sk_buff *PacketToDrop = NULL;
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for(pTarang = Adapter->pTarangs; pTarang; pTarang = pTarang->next)
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{
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while(pTarang->RxAppControlHead != NULL)
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{
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PacketToDrop=pTarang->RxAppControlHead;
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DEQUEUEPACKET(pTarang->RxAppControlHead,pTarang->RxAppControlTail);
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2010-11-01 13:35:21 +00:00
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dev_kfree_skb(PacketToDrop);
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2010-09-08 21:46:36 +00:00
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}
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pTarang->AppCtrlQueueLen = 0;
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//dropped contrl packet statistics also should be reset.
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memset((PVOID)&pTarang->stDroppedAppCntrlMsgs, 0, sizeof(S_MIBS_DROPPED_APP_CNTRL_MESSAGES));
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}
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return STATUS_SUCCESS ;
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}
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