77bd21c387
Take advantage of the bulk interface to send several packets simultaneity with one submit_to() to remote cpu.
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
#include "core/reactor.hh"
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#include "proxy.hh"
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#include <utility>
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namespace net {
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class proxy_net_device : public qp {
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private:
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static constexpr size_t _send_queue_length = 128;
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size_t _send_depth = 0;
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unsigned _cpu;
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device* _dev;
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std::vector<packet> _moving;
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public:
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explicit proxy_net_device(unsigned cpu, device* dev);
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virtual future<> send(packet p) override {
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abort();
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}
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virtual uint32_t send(circular_buffer<packet>& p) override;
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};
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proxy_net_device::proxy_net_device(unsigned cpu, device* dev) :
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_cpu(cpu),
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_dev(dev)
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{
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_moving.reserve(_send_queue_length);
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}
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uint32_t proxy_net_device::send(circular_buffer<packet>& p)
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{
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if (!_moving.empty() || _send_depth == _send_queue_length) {
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return 0;
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}
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for (size_t i = 0; !p.empty() && _send_depth < _send_queue_length; i++, _send_depth++) {
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_moving.push_back(std::move(p.front()));
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p.pop_front();
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}
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if (!_moving.empty()) {
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qp* dev = &_dev->queue_for_cpu(_cpu);
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auto cpu = engine.cpu_id();
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smp::submit_to(_cpu, [this, dev, cpu]() mutable {
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for(size_t i = 0; i < _moving.size(); i++) {
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dev->proxy_send(_moving[i].free_on_cpu(cpu, [this] { _send_depth--; }));
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}
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}).then([this] {
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_moving.clear();
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});
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}
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return _moving.size();
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}
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std::unique_ptr<qp> create_proxy_net_device(unsigned master_cpu, device* dev) {
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return std::make_unique<proxy_net_device>(master_cpu, dev);
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}
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}
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