    .       -
     ,     ,
         -
 .         
 .      5    -
 .       ,  
     .    
,        -
 ,     ,  
     ,     .
,     .

 

   ( )    -
         
 .     ,    -
     .    -
  . ,     
       Ethernet-, 
2 , ..       
        ,   .

     ,    -
 .     .    
  ,     ,  -
 .     ,     ,
        8.

   

    (   )   
          (busy
loop, busy waiting).   ,      -
          .

     ,     
   ,    .

unsigned long delay = jiffies + 10; /*    */
while (time before (jiffies, delay))

  ,     ,       
.    ,     , 
    ,    ,   ,  , 
.         .

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