te
Copyright (C) 2008, Sun Microsystems, Inc. All Rights Reserved.
Copyright (C) 2012, Joyent, Inc. All Rights Reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
NET_PROTOCOL_LOOKUP 9F "Mar 5, 2012"
NAME
net_protocol_lookup - locate an implementation of a network layer protocol
SYNOPSIS
#include <sys/neti.h>

net_handle_t net_protocol_lookup(netid_t id, const char *protocol);
INTERFACE LEVEL
illumos DDI specific (illumos DDI).
PARAMETERS
id

network instance identifier.

family

name of the network protocol to find.

DESCRIPTION
The net_protocol_lookup() function attempts to locate a data structure that defines what capabilities it is exporting through this interface. The value returned by this call is guaranteed to be valid until it is passed into a call to net_protocol_release(9F), after which it should no longer be treated as valid.

The protocol must be a registered name of a network protocol that has been registered. The symbols NHF_INET and NHF_INET6 should be passed to net_protocol_lookup() as the protocol name to gain access to either IPv4 or IPv6 respectively.

RETURN VALUES
The net_protocol_lookup() function returns NULL if it does not find any knowledge about the network protocol referenced. Otherwise, it returns a value that can be used with other calls in this framework.
CONTEXT
The net_protocol_lookup() function may be called from user, kernel, or interrupt context.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
SEE ALSO
attributes (7), net_protocol_release (9F)