1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
3 * This file is open source software, licensed to you under the terms
4 * of the Apache License, Version 2.0 (the "License"). See the NOTICE file
5 * distributed with this work for additional information regarding copyright
6 * ownership. You may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
20 * Copyright (C) 2014 Cloudius Systems, Ltd.
23 * Ceph - scalable distributed file system
25 * Copyright (C) 2015 XSky <haomai@xsky.com>
27 * Author: Haomai Wang <haomaiwang@gmail.com>
29 * This is free software; you can redistribute it and/or
30 * modify it under the terms of the GNU Lesser General Public
31 * License version 2.1, as published by the Free Software
32 * Foundation. See file COPYING.
38 arp_for_protocol::arp_for_protocol(arp& a, uint16_t proto_num)
39 : _arp(a), _proto_num(proto_num)
41 _arp.add(proto_num, this);
44 arp_for_protocol::~arp_for_protocol()
49 arp::arp(interface* netif):
51 _proto(netif, eth_protocol_num::arp, [this] { return get_packet(); }),
54 [this] (Packet p, ethernet_address ea) {
55 return process_packet(std::move(p), ea);
57 [this](forward_hash& out_hash_data, Packet& p, size_t off) {
58 return forward(out_hash_data, p, off);
64 Tub<l3_protocol::l3packet> arp::get_packet()
66 Tub<l3_protocol::l3packet> p;
67 if (!_packetq.empty()) {
68 p = std::move(_packetq.front());
74 bool arp::forward(forward_hash& out_hash_data, Packet& p, size_t off)
76 auto ah = p.get_header<arp_hdr>(off);
77 auto i = _arp_for_protocol.find(ntoh(ah->ptype));
78 if (i != _arp_for_protocol.end()) {
79 return i->second->forward(out_hash_data, p, off);
84 void arp::add(uint16_t proto_num, arp_for_protocol* afp)
86 _arp_for_protocol[proto_num] = afp;
89 void arp::del(uint16_t proto_num)
91 _arp_for_protocol.erase(proto_num);
94 int arp::process_packet(Packet p, ethernet_address from)
96 auto ah = p.get_header<arp_hdr>()->ntoh();
97 auto i = _arp_for_protocol.find(ah.ptype);
98 if (i != _arp_for_protocol.end()) {
99 i->second->received(std::move(p));