60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/*
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* This file is open source software, licensed to you under the terms
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* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
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* distributed with this work for additional information regarding copyright
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* ownership. You may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/*
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* Copyright (C) 2014 Cloudius Systems, Ltd.
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*
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*/
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#ifndef UDP_HH_
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#define UDP_HH_
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#include <unordered_map>
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#include <assert.h>
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#include "core/reactor.hh"
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#include "core/shared_ptr.hh"
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#include "net/api.hh"
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#include "const.hh"
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#include "net.hh"
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namespace net {
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struct udp_hdr {
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packed<uint16_t> src_port;
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packed<uint16_t> dst_port;
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packed<uint16_t> len;
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packed<uint16_t> cksum;
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template<typename Adjuster>
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auto adjust_endianness(Adjuster a) {
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return a(src_port, dst_port, len, cksum);
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}
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} __attribute__((packed));
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struct udp_channel_state {
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queue<udp_datagram> _queue;
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// Limit number of data queued into send queue
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semaphore _user_queue_space = {212992};
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udp_channel_state(size_t queue_size) : _queue(queue_size) {}
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future<> wait_for_send_buffer(size_t len) { return _user_queue_space.wait(len); }
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void complete_send(size_t len) { _user_queue_space.signal(len); }
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};
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}
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#endif
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