net_getmtu(9f) [opensolaris man page]

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)

net_routeto(9F) 					   Kernel Functions for Drivers 					   net_routeto(9F)

NAME

       net_routeto - indicate which network interface packets are sent

SYNOPSIS

       #include <sys/neti.h>

       phy_if_t net_routeto(const net_data_t *net, struct sockaddr *address,
	    struct sockaddr *nexthop);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

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

       address	  network address to find a path out of the machine for.

       nexthop	  pointer  to the sockaddr structure in which to store the address of the next hop. If this information is not required, the value
		  NULL may be passed instead.

DESCRIPTION

       The net_routeto() function indicates which network interface packets destined for a particular address would be sent out of,  according	to
       the  systems network routing tables. If next is supplied as a non-NULL pointer, the IP address of the nexthop router to be used is returned
       in it.

RETURN VALUES

       The net_routeto() function returns:

       -1    The network protocol does not support this function.

       0     This function cannot find a route for the address given.

       >0    Indicates which network interface can be used to reach the given address.

CONTEXT

       The net_routeto() 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), attributes(5)

SunOS 5.11							    1 May 2008							   net_routeto(9F)