Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
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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