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Kernel: Avoid allocations when handling network packets

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This commit is contained in:
Gunnar Beutner
2021-05-15 22:45:22 +02:00
committed by Andreas Kling
parent 53d0150827
commit 006f11f23d
5 changed files with 8 additions and 6 deletions
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6
Kernel/Net/NetworkAdapter.cpp
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@@ -65,7 +65,7 @@ NetworkAdapter::~NetworkAdapter()
void NetworkAdapter::send(const MACAddress& destination, const ARPPacket& packet)
{
size_t size_in_bytes = sizeof(EthernetFrameHeader) + sizeof(ARPPacket);
auto buffer = ByteBuffer::create_zeroed(size_in_bytes);
auto buffer = NetworkByteBuffer::create_zeroed(size_in_bytes);
auto* eth = (EthernetFrameHeader*)buffer.data();
eth->set_source(mac_address());
eth->set_destination(destination);
@@ -83,7 +83,7 @@ KResult NetworkAdapter::send_ipv4(const IPv4Address& source_ipv4, const MACAddre
return send_ipv4_fragmented(source_ipv4, destination_mac, destination_ipv4, protocol, payload, payload_size, ttl);
size_t ethernet_frame_size = sizeof(EthernetFrameHeader) + sizeof(IPv4Packet) + payload_size;
auto buffer = ByteBuffer::create_zeroed(ethernet_frame_size);
auto buffer = NetworkByteBuffer::create_zeroed(ethernet_frame_size);
auto& eth = *(EthernetFrameHeader*)buffer.data();
eth.set_source(mac_address());
eth.set_destination(destination_mac);
@@ -121,7 +121,7 @@ KResult NetworkAdapter::send_ipv4_fragmented(const IPv4Address& source_ipv4, con
for (size_t packet_index = 0; packet_index < fragment_block_count; ++packet_index) {
auto is_last_block = packet_index + 1 == fragment_block_count;
auto packet_payload_size = is_last_block ? last_block_size : packet_boundary_size;
auto buffer = ByteBuffer::create_zeroed(ethernet_frame_size);
auto buffer = NetworkByteBuffer::create_zeroed(ethernet_frame_size);
auto& eth = *(EthernetFrameHeader*)buffer.data();
eth.set_source(mac_address());
eth.set_destination(destination_mac);