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Kernel: Bring up enough networking code that we can respond to ARP requests.

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This is all pretty rickety but we can now respond to "arping" from the host
while running inside QEMU. Very cool. :^)
This commit is contained in:
Andreas Kling
2019-03-11 23:21:38 +01:00
parent 10dcd3a47f
commit 318b01e055
12 changed files with 229 additions and 40 deletions
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7
Kernel/NetworkAdapter.cpp
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@@ -2,6 +2,7 @@
#include <Kernel/StdLib.h>
#include <Kernel/EthernetFrameHeader.h>
#include <Kernel/kmalloc.h>
#include <Kernel/EtherType.h>
NetworkAdapter::NetworkAdapter()
{
@@ -17,6 +18,7 @@ void NetworkAdapter::send(const MACAddress& destination, const ARPPacket& packet
auto* eth = (EthernetFrameHeader*)kmalloc(size_in_bytes);
eth->set_source(mac_address());
eth->set_destination(destination);
eth->set_ether_type(EtherType::ARP);
memcpy(eth->payload(), &packet, sizeof(ARPPacket));
send_raw((byte*)eth, size_in_bytes);
kfree(eth);
@@ -35,3 +37,8 @@ ByteBuffer NetworkAdapter::dequeue_packet()
return { };
return m_packet_queue.take_first();
}
void NetworkAdapter::set_ipv4_address(const IPv4Address& address)
{
m_ipv4_address = address;
}