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)
