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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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32
kernel/kernel/Networking/E1000/E1000.cpp
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@@ -4,6 +4,7 @@
#include <kernel/Memory/PageTable.h>
#include <kernel/MMIO.h>
#include <kernel/Networking/E1000/E1000.h>
#include <kernel/Networking/NetworkManager.h>
#define DEBUG_E1000 1
@@ -69,14 +70,7 @@ namespace Kernel
TRY(read_mac_address());
#if DEBUG_E1000
dprintln("E1000 at PCI {}:{}.{}", m_pci_device.bus(), m_pci_device.dev(), m_pci_device.func());
dprintln(" MAC: {2H}:{2H}:{2H}:{2H}:{2H}:{2H}",
m_mac_address[0],
m_mac_address[1],
m_mac_address[2],
m_mac_address[3],
m_mac_address[4],
m_mac_address[5]
);
dprintln(" MAC: {}", m_mac_address);
#endif
TRY(initialize_rx());
@@ -141,16 +135,16 @@ namespace Kernel
if (m_has_eerprom)
{
uint32_t temp = eeprom_read(0);
m_mac_address[0] = temp;
m_mac_address[1] = temp >> 8;
m_mac_address.address[0] = temp;
m_mac_address.address[1] = temp >> 8;
temp = eeprom_read(1);
m_mac_address[2] = temp;
m_mac_address[3] = temp >> 8;
m_mac_address.address[2] = temp;
m_mac_address.address[3] = temp >> 8;
temp = eeprom_read(2);
m_mac_address[4] = temp;
m_mac_address[5] = temp >> 8;
m_mac_address.address[4] = temp;
m_mac_address.address[5] = temp >> 8;
return {};
}
@@ -162,7 +156,7 @@ namespace Kernel
}
for (int i = 0; i < 6; i++)
m_mac_address[i] = (uint8_t)read32(0x5400 + i * 8);
m_mac_address.address[i] = (uint8_t)read32(0x5400 + i * 8);
return {};
}
@@ -175,7 +169,6 @@ namespace Kernel
auto* rx_descriptors = reinterpret_cast<volatile e1000_rx_desc*>(m_rx_descriptor_region->vaddr());
for (size_t i = 0; i < E1000_RX_DESCRIPTOR_COUNT; i++)
{
m_rx_buffers[i] = reinterpret_cast<void*>(m_rx_buffer_region->vaddr() + E1000_RX_BUFFER_SIZE * i);
rx_descriptors[i].addr = m_rx_buffer_region->paddr() + E1000_RX_BUFFER_SIZE * i;
rx_descriptors[i].status = 0;
}
@@ -209,7 +202,6 @@ namespace Kernel
auto* tx_descriptors = reinterpret_cast<volatile e1000_tx_desc*>(m_tx_descriptor_region->vaddr());
for (size_t i = 0; i < E1000_TX_DESCRIPTOR_COUNT; i++)
{
m_tx_buffers[i] = reinterpret_cast<void*>(m_tx_buffer_region->vaddr() + E1000_TX_BUFFER_SIZE * i);
tx_descriptors[i].addr = m_tx_buffer_region->paddr() + E1000_TX_BUFFER_SIZE * i;
tx_descriptors[i].cmd = 0;
}
@@ -300,8 +292,10 @@ namespace Kernel
break;
ASSERT_LTE((uint16_t)descriptor.length, E1000_RX_BUFFER_SIZE);
// FIXME: do something with the packet :)
dprintln("got {} byte packet", (uint16_t)descriptor.length);
NetworkManager::get().on_receive(BAN::ConstByteSpan {
reinterpret_cast<const uint8_t*>(m_rx_buffer_region->vaddr() + rx_current * E1000_RX_BUFFER_SIZE),
descriptor.length
});
descriptor.status = 0;
write32(REG_RDT0, rx_current);