Ashin Walpola
d107534eb2
obu-firmware builds against the vanetza-idf C-ITS library, which until now came from the colleague's microbu-esp32c5 tree beside the repository and was not tracked here, so a clone of this repository could not build the firmware it ships. The library alone is now part of obu-firmware, as obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from there by default; -DVANETZA_IDF_DIR still points the build elsewhere. The rest of the colleague's tree (their own VAM firmware, PKI tooling, station-link Python tools, the V2X2MAP bridge) stays out of this repository and gitignored; nothing is pushed to their repository. NOTES.md, docs/06, TODO.md and the pcap verifier's usage line point at the new location.
115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
#include "application.hpp"
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#include "dcc_passthrough.hpp"
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#include "ethernet_device.hpp"
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#include "router_context.hpp"
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#include "time_trigger.hpp"
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#include <vanetza/access/ethertype.hpp>
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#include <vanetza/dcc/data_request.hpp>
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#include <vanetza/dcc/interface.hpp>
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#include <iostream>
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#include <vanetza/common/byte_order.hpp>
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using namespace vanetza;
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RouterContext::RouterContext(const geonet::MIB& mib, TimeTrigger& trigger, vanetza::PositionProvider& positioning, vanetza::security::SecurityEntity* security_entity) :
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mib_(mib), router_(trigger.runtime(), mib_),
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trigger_(trigger), positioning_(positioning)
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{
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router_.packet_dropped = std::bind(&RouterContext::log_packet_drop, this, std::placeholders::_1);
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router_.set_address(mib_.itsGnLocalGnAddr);
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router_.set_transport_handler(geonet::UpperProtocol::BTP_B, &dispatcher_);
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router_.set_security_entity(security_entity);
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update_position_vector();
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trigger_.schedule();
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}
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RouterContext::~RouterContext()
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{
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for (auto* app : applications_) {
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disable(app);
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}
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}
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void RouterContext::log_packet_drop(geonet::Router::PacketDropReason reason)
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{
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auto reason_string = stringify(reason);
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std::cout << "Router dropped packet because of " << reason_string << " (" << static_cast<int>(reason) << ")\n";
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}
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void RouterContext::set_link_layer(LinkLayer* link_layer)
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{
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namespace dummy = std::placeholders;
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if (link_layer) {
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link_layer->set_source_address(mib_.itsGnLocalGnAddr.mid());
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request_interface_.reset(new DccPassthrough { *link_layer, trigger_ });
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router_.set_access_interface(request_interface_.get());
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link_layer->indicate(std::bind(&RouterContext::indicate, this, dummy::_1, dummy::_2));
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update_packet_flow(router_.get_local_position_vector());
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} else {
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router_.set_access_interface(nullptr);
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request_interface_.reset();
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}
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}
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void RouterContext::indicate(CohesivePacket&& packet, const EthernetHeader& hdr)
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{
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if (hdr.source != mib_.itsGnLocalGnAddr.mid() && hdr.type == access::ethertype::GeoNetworking) {
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std::cout << "received packet from " << hdr.source << " (" << packet.size() << " bytes)\n";
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std::unique_ptr<PacketVariant> up { new PacketVariant(std::move(packet)) };
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trigger_.schedule(); // ensure the clock is up-to-date for the security entity
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router_.indicate(std::move(up), hdr.source, hdr.destination);
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trigger_.schedule(); // schedule packet forwarding
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}
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}
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void RouterContext::enable(Application* app)
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{
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app->router_ = &router_;
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dispatcher_.add_promiscuous_hook(app->promiscuous_hook());
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if (app->port() != btp::port_type(0)) {
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dispatcher_.set_non_interactive_handler(app->port(), app);
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}
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}
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void RouterContext::disable(Application* app)
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{
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if (app->port() != btp::port_type(0)) {
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dispatcher_.set_non_interactive_handler(app->port(), nullptr);
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}
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dispatcher_.remove_promiscuous_hook(app->promiscuous_hook());
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app->router_ = nullptr;
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}
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void RouterContext::require_position_fix(bool flag)
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{
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require_position_fix_ = flag;
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update_packet_flow(router_.get_local_position_vector());
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}
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void RouterContext::update_position_vector()
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{
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router_.update_position(positioning_.position_fix());
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vanetza::Runtime::Callback callback = [this](vanetza::Clock::time_point) { this->update_position_vector(); };
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vanetza::Clock::duration next = std::chrono::seconds(1);
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trigger_.runtime().schedule(next, callback);
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trigger_.schedule();
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update_packet_flow(router_.get_local_position_vector());
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}
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void RouterContext::update_packet_flow(const geonet::LongPositionVector& lpv)
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{
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if (request_interface_) {
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if (require_position_fix_) {
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// Skip all requests until a valid GPS position is available
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request_interface_->allow_packet_flow(lpv.position_accuracy_indicator);
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} else {
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request_interface_->allow_packet_flow(true);
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}
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}
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}
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