Kernel Functions for Drivers                       netgetmtu(9F)



NAME
     netgetmtu - determine the MTU of a given network interface

SYNOPSIS
     #include 

     int netgetmtu(const netdatat net, const phyift ifp);


INTERFACE LEVEL
     Solaris DI specific (Solaris DI).

PARAMETERS
     net    value   returned   from   a   successful   call    to
            netprotocollookup(9F).


     ifp    value   returned   from   a   successful   call    to
            netphylookup(9F) or netphygetnext(9F).


DESCRIPTION
     The netgetmtu() function  receives  information  about  the
     current  MTU of a network interface. The value returned from
     this function call should not be cached as the MTU of a net-
     work interface since it is not guaranteed to be constant.

RETURN VALUES
     The netgetmtu() function returns -1 if the network protocol
     does  not  support  this  feature  and otherwise returns the
     current MTU of the network interface.

CONTEXT
     The netgetmtu() function may be called from user,   kernel,
     or interrupt context.

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:
















SunOS 5.11           Last change: 1 May 2008                    1






Kernel Functions for Drivers                       netgetmtu(9F)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Availability                 SUNWcsu                     
    
     Interface Stability          Committed                   
    


SEE ALSO
     netphygetnext(9F),                       netphylookup(9F),
     netprotocollookup(9F)











































SunOS 5.11           Last change: 1 May 2008                    2