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Kernel: Minor style cleanup in NetworkTask.

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This commit is contained in:
Andreas Kling 2019-03-12 00:01:07 +01:00
parent 318b01e055
commit 05c1a79454
1 changed files with 23 additions and 16 deletions
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39
Kernel/NetworkTask.cpp
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@ -59,43 +59,50 @@ void handle_arp(const EthernetFrameHeader& eth, int frame_size)
kprintf("handle_arp: Frame too small (%d, need %d)\n", frame_size, minimum_arp_frame_size);
return;
}
const ARPPacket& incoming_packet = *static_cast<const ARPPacket*>(eth.payload());
if (incoming_packet.hardware_type() != 1 || incoming_packet.hardware_address_length() != sizeof(MACAddress)) {
kprintf("handle_arp: Hardware type not ethernet (%w, len=%u)\n", incoming_packet.hardware_type(), incoming_packet.hardware_address_length());
const ARPPacket& packet = *static_cast<const ARPPacket*>(eth.payload());
if (packet.hardware_type() != 1 || packet.hardware_address_length() != sizeof(MACAddress)) {
kprintf("handle_arp: Hardware type not ethernet (%w, len=%u)\n",
packet.hardware_type(),
packet.hardware_address_length()
);
return;
}
if (incoming_packet.protocol_type() != EtherType::IPv4 || incoming_packet.protocol_address_length() != sizeof(IPv4Address)) {
kprintf("handle_arp: Protocol type not IPv4 (%w, len=%u)\n", incoming_packet.hardware_type(), incoming_packet.protocol_address_length());
if (packet.protocol_type() != EtherType::IPv4 || packet.protocol_address_length() != sizeof(IPv4Address)) {
kprintf("handle_arp: Protocol type not IPv4 (%w, len=%u)\n",
packet.hardware_type(),
packet.protocol_address_length()
);
return;
}
#ifdef ARP_DEBUG
kprintf("handle_arp: operation=%w, sender=%s/%s, target=%s/%s\n",
incoming_packet.operation(),
incoming_packet.sender_hardware_address().to_string().characters(),
incoming_packet.sender_protocol_address().to_string().characters(),
incoming_packet.target_hardware_address().to_string().characters(),
incoming_packet.target_protocol_address().to_string().characters()
packet.operation(),
packet.sender_hardware_address().to_string().characters(),
packet.sender_protocol_address().to_string().characters(),
packet.target_hardware_address().to_string().characters(),
packet.target_protocol_address().to_string().characters()
);
#endif
// FIXME: Get the adapter through some kind of lookup by IPv4 address.
auto& e1000 = *E1000NetworkAdapter::the();
if (incoming_packet.operation() == 1) {
if (packet.operation() == 1) {
// Who has this IP address?
if (e1000.ipv4_address() == incoming_packet.target_protocol_address()) {
if (e1000.ipv4_address() == packet.target_protocol_address()) {
// We do!
kprintf("handle_arp: Responding to ARP request for my IPv4 address (%s)\n", e1000.ipv4_address().to_string().characters());
kprintf("handle_arp: Responding to ARP request for my IPv4 address (%s)\n",
e1000.ipv4_address().to_string().characters());
ARPPacket response;
response.set_operation(2); // Response
response.set_target_hardware_address(incoming_packet.sender_hardware_address());
response.set_target_protocol_address(incoming_packet.sender_protocol_address());
response.set_target_hardware_address(packet.sender_hardware_address());
response.set_target_protocol_address(packet.sender_protocol_address());
response.set_sender_hardware_address(e1000.mac_address());
response.set_sender_protocol_address(e1000.ipv4_address());
e1000.send(incoming_packet.sender_hardware_address(), response);
e1000.send(packet.sender_hardware_address(), response);
}
}
}