a question about frame delay


From: hao (lphao_at_tju.edu.cn)
Date: 2002-10-12 02:28:21 UTC



hi folks!

        Very sorry I have so many questions.         

         1)I dump the time stamp when the prism2_transmit is called and the interrupt HFA384X_EV_TX is called,Can the duration between the two timestamps be considered as delay of this frame.         

        2)the interrupt HFA384X_EV_TX is called when the unicast frame's acknowlege is received (may be already several retransmittion happened ),the interrupt HFA384X_EV_TXEXC(RetryErr) is called when the unicast frame's acknowlege is not received even maximum retranmission. if my comprehesion is right,Why the duration(unicast frame) between the time when prism2_transmit is called and the time when HFA384X_EV_TX is called is longer than the duration between the time when prism2_transmit is called and the time when interrupt HFA384X_EV_TXEXC(RetryErr).   

thanks!

                    

            hao
            lphao_at_tju.edu.cn


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