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.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
#ifndef ETHERNET_HEADER_HPP_
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#define ETHERNET_HEADER_HPP_
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#include <vanetza/common/byte_buffer.hpp>
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#include <vanetza/common/byte_order.hpp>
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#include <vanetza/net/mac_address.hpp>
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#include <cstddef>
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namespace vanetza
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{
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/**
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* Get length of ethernet header in bytes
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* \param header length in bytes
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*/
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constexpr std::size_t ethernet_header_length()
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{
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return 2 * sizeof(MacAddress::octets) + sizeof(uint16_t);
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}
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/**
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* Link-level header of type Ethernet II
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*
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* EthernetHeader is suitable for Linux raw packet sockets, see man 7 packet
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*/
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class EthernetHeader
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{
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public:
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using EtherType = uint16be_t;
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static constexpr std::size_t length_bytes = ethernet_header_length();
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MacAddress destination;
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MacAddress source;
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EtherType type;
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};
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/**
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* Create a byte buffer containing an ethernet header
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* \param dest Destination MAC address
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* \param src Source MAC address
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* \param proto EtherType number
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*/
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ByteBuffer create_ethernet_header(const MacAddress& dest, const MacAddress& src, uint16be_t proto);
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ByteBuffer create_ethernet_header(const EthernetHeader&);
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/**
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* Parse ethernet header from byte buffer
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* \param buffer byte buffer (throws exception if too short)
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* \return ethernet header
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*/
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EthernetHeader decode_ethernet_header(const ByteBuffer&);
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EthernetHeader decode_ethernet_header(ByteBuffer::const_iterator, ByteBuffer::const_iterator);
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} // namespace vanetza
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#endif // ETHERNET_HEADER_HPP_
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