/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.net.ipv4;
import java.net.SocketException;
import org.jnode.net.NoSuchProtocolException;
import org.jnode.net.SocketBuffer;
/**
* @author epr
*/
public interface IPv4Service {
/**
* Gets the routing table
*/
public IPv4RoutingTable getRoutingTable();
/**
* Transmit an IP packet.
* The given buffer must contain all packet data AND the header(s)
* of any IP sub-protocols, before this method is called.
* <p>
* The following fields of the IP header must be set:
* tos, ttl, protocol, dstAddress.
* <p>
* All other header fields are set, unless they have been set before.
* <p>
* The following fields are always set (also when set before):
* version, hdrlength, identification, fragmentOffset, checksum
* <p>
* If the device attribute of the skbuf has been set, the packet will
* be send to this device, otherwise a suitable route will be searched
* for in the routing table.
*
* @param hdr
* @param skbuf
* @throws SocketException The packet cannot be transmitted
*/
public void transmit(IPv4Header hdr, SocketBuffer skbuf) throws SocketException;
/**
* Gets the protocol for a given ID
* @param protocolID
* @throws NoSuchProtocolException No protocol with the given ID was found.
*/
public IPv4Protocol getProtocol(int protocolID) throws NoSuchProtocolException;
}