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Kernel: Implement basic recvfrom

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Bananymous
2024-02-02 13:50:00 +02:00
parent 7b287a1d5b
commit 0f154c3173
20 changed files with 339 additions and 116 deletions
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24
kernel/kernel/Networking/NetworkInterface.cpp
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@@ -10,8 +10,8 @@ namespace Kernel
struct EthernetHeader
{
uint8_t dst_mac[6];
uint8_t src_mac[6];
BAN::MACAddress dst_mac;
BAN::MACAddress src_mac;
BAN::NetworkEndian<uint16_t> ether_type;
};
static_assert(sizeof(EthernetHeader) == 14);
@@ -40,19 +40,19 @@ namespace Kernel
m_name[3] = minor(m_rdev) + '0';
}
BAN::ErrorOr<void> NetworkInterface::add_interface_header(BAN::Vector<uint8_t>& packet, uint8_t destination_mac[6])
size_t NetworkInterface::interface_header_size() const
{
ASSERT(m_type == Type::Ethernet);
return sizeof(EthernetHeader);
}
TRY(packet.resize(packet.size() + sizeof(EthernetHeader)));
memmove(packet.data() + sizeof(EthernetHeader), packet.data(), packet.size() - sizeof(EthernetHeader));
auto* header = reinterpret_cast<EthernetHeader*>(packet.data());
memcpy(header->dst_mac, destination_mac, 6);
memcpy(header->src_mac, get_mac_address(), 6);
header->ether_type = 0x0800; // ipv4
return {};
void NetworkInterface::add_interface_header(BAN::ByteSpan packet, BAN::MACAddress destination)
{
ASSERT(m_type == Type::Ethernet);
auto& header = packet.as<EthernetHeader>();
header.dst_mac = destination;
header.src_mac = get_mac_address();
header.ether_type = 0x0800;
}
}