net_getmtu(9F)						   Kernel Functions for Drivers 					    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(9F).

       ifp    value returned from a successful call to net_phylookup(9F) or net_phygetnext(9F).

DESCRIPTION

       The  net_getmtu()  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 network interface since it is not guaranteed to be constant.

RETURN VALUES

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

CONTEXT

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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       net_phygetnext(9F), net_phylookup(9F), net_protocol_lookup(9F)

SunOS 5.11							    1 May 2008							    net_getmtu(9F)