[ECOS] where set bits of netint_flags?

[=?gb2312?B?1cUgwcE=?= <johnsonest at hotmail dot com>]

Dear Gary,
     I know the thread "cyg_netint" is used to process network events.
this thread wait the flag netint_flags,but who set this flag?
I search all files,especially driver,I found this procedure:
      net_isr()
         |
      eth_drv_dsr()
         |
ecos_synch_eth_drv_dsr()
         |
cyg_flag_setbits( &alarm_flag, 2 );//strange,why set alarm_flag? this will 
wake alarm_thread and call //till here in DSR level
"eth_drv_run_deliveries"//in thread level
         |
   (*sc->funs->deliver)(sc)//thread level
         |
    quicc_eth_deliver()//thread level
         |
       receive/transmit
Brs/johnsonest
         
         




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