Changes between Version 36 and Version 37 of WANMAC


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Timestamp:
Jul 21, 2006, 3:27:37 PM (18 years ago)
Author:
varunnayyar
Comment:

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  • WANMAC

    v36 v37  
    141141The pduQueueStruct is a structure containing an array of frameStructs and a few control bytes to keep track of indices, flags and the length of the queue. This queue can serve two purposes. The first use is during the receive phase of the MAC. When the MAC receives a packet from another node, it needs to put the payload somewhere. Because the specification of the connection between our MAC and higher networking layers is still in the process of being defined, we need a method of abstracting our layer away from this future glue layer. An acceptable solution is to simply copy packets from the PHY's memory space into a queue. It is assumed that another in the xilkernel will be taking these packets and giving them to higher layers. The other use of this queue is on the transmit side of the MAC. Again, the connection to the higher layer is still being defined, so we need a way of getting packets to send in the meantime. You can think of the transmit queue as analogous to the receive queue, in that some process somewhere gives us packets to send. This could be the [wiki:"Video Board" Video Board], or eventually the ethernet controller.
    142142
    143 '''Base Station'''
    144 
    145 [source:/ResearchApps/MAC/WANMAC/Basestation/basestation.h@91#L68 BSQueueStruct]
    146 This is the Base Station data structure, for keeping record of the number of subscribers and for their Receive and Transmit Queues.
    147 
    148143
    149144[source:/ResearchApps/MAC/WANMAC/Basestation/basestation.h@91#L74 MAPEntryStruct]
    … …  
    166161as for newly added subscriber ids. So far we are not using this, as this is used for Network Entry Protocol.
    167162
     163
     164'''Base Station'''
     165
     166[source:/ResearchApps/MAC/WANMAC/Basestation/basestation.h@91#L68 BSQueueStruct]
     167This is the Base Station data structure, for keeping record of the number of subscribers and for their Receive and Transmit Queues.
     168
     169
    168170'''Subscriber Station'''
     171
     172[source:/ResearchApps/MAC/WANMAC/Basestation/basestation.h@91#L68 BSQueueStruct]
     173This is the Subscriber Station data structure, for keeping record of its Receive and Transmit Queues.
    169174
    170175