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-rw-r--r--src/msg/async/dpdk/ARP.cc89
1 files changed, 89 insertions, 0 deletions
diff --git a/src/msg/async/dpdk/ARP.cc b/src/msg/async/dpdk/ARP.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License"). See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership. You may not use this file except in compliance with the License.
+ *
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Copyright (C) 2014 Cloudius Systems, Ltd.
+ */
+
+#include "ARP.h"
+
+arp_for_protocol::arp_for_protocol(arp& a, uint16_t proto_num)
+ : _arp(a), _proto_num(proto_num)
+{
+ _arp.add(proto_num, this);
+}
+
+arp_for_protocol::~arp_for_protocol()
+{
+ _arp.del(_proto_num);
+}
+
+arp::arp(interface* netif):
+ _netif(netif),
+ _proto(netif, eth_protocol_num::arp, [this] { return get_packet(); }),
+ _rx_packets(
+ _proto.receive(
+ [this] (Packet p, ethernet_address ea) {
+ return process_packet(std::move(p), ea);
+ },
+ [this](forward_hash& out_hash_data, Packet& p, size_t off) {
+ return forward(out_hash_data, p, off);
+ }
+ )
+ )
+{}
+
+Tub<l3_protocol::l3packet> arp::get_packet()
+{
+ Tub<l3_protocol::l3packet> p;
+ if (!_packetq.empty()) {
+ p = std::move(_packetq.front());
+ _packetq.pop_front();
+ }
+ return p;
+}
+
+bool arp::forward(forward_hash& out_hash_data, Packet& p, size_t off)
+{
+ auto ah = p.get_header<arp_hdr>(off);
+ auto i = _arp_for_protocol.find(ntoh(ah->ptype));
+ if (i != _arp_for_protocol.end()) {
+ return i->second->forward(out_hash_data, p, off);
+ }
+ return false;
+}
+
+void arp::add(uint16_t proto_num, arp_for_protocol* afp)
+{
+ _arp_for_protocol[proto_num] = afp;
+}
+
+void arp::del(uint16_t proto_num)
+{
+ _arp_for_protocol.erase(proto_num);
+}
+
+int arp::process_packet(Packet p, ethernet_address from)
+{
+ auto ah = p.get_header<arp_hdr>()->ntoh();
+ auto i = _arp_for_protocol.find(ah.ptype);
+ if (i != _arp_for_protocol.end()) {
+ i->second->received(std::move(p));
+ }
+ return 0;
+}