Kernel functions				   net_getmtu(9F)



NAME
     net_getmtu	- determine the	MTU of a given network interface

SYNOPSIS
     #include <sys/neti.h>

     int net_getmtu(const net_data_t net, const	phy_if_t ifp);

INTERFACE LEVEL
     Solaris DDI specific (Solaris DDI)

PARAMETERS
     net

	 value	 returned   from    a	 successful    call    to
	 net_protocol_lookup.



     ifp
	 value returned	from a successful call	to  net_phylookup
	 or net_phygetnext.



DESCRIPTION
     This function is  used  to	 recieve  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 is not guaranteed to be constant.

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

ATTRIBUTES
     See attributes(5) for descriptions	of the	following  attri-
     butes:
	  ____________________________________________________________
	 |	 ATTRIBUTE TYPE	       |       ATTRIBUTE VALUE	     |
	 |_____________________________|_____________________________|
	 | Interface Stability	       |	 Committed	     |
	 |_____________________________|_____________________________|

SEE ALSO
     net_phygetnext(9f), net_phylookup(9f)








SunOS 5.10	   Last	change:	25 March 2008			1