interface as netlink sockets

[Praveen C H <praveenc@sasken.com>]

 Hi,
   
     I need some information regarding the net socket interface .
     
     How to pass the data from the kernel to user mode ?
     
     The data size we are passing is limited  to 4,8,12 are it can be of any
     size?
     
   regrds,
   praveen.     
     
    
     
     
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