From 19fcec84d8d7d21e796c7624e521b60d28ee21ed Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:45:59 +0200
Subject: Adding upstream version 16.2.11+ds.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/msg/async/dpdk/ARP.cc | 89 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/msg/async/dpdk/ARP.cc

(limited to 'src/msg/async/dpdk/ARP.cc')

diff --git a/src/msg/async/dpdk/ARP.cc b/src/msg/async/dpdk/ARP.cc
new file mode 100644
index 000000000..dedc9e3c7
--- /dev/null
+++ b/src/msg/async/dpdk/ARP.cc
@@ -0,0 +1,89 @@
+// -*- 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;
+}
-- 
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