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IPv4: Use KBuffer instead of ByteBuffer for socket receive queues

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This drastically reduces the pressure on the kernel heap when receiving
data from IPv4 sockets.
This commit is contained in:
Andreas Kling 2019-08-04 21:07:50 +02:00
parent 609495882f
commit 72798519cb
7 changed files with 18 additions and 19 deletions
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5
Kernel/Net/TCPSocket.cpp
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@ -46,11 +46,10 @@ NonnullRefPtr<TCPSocket> TCPSocket::create(int protocol)
return adopt(*new TCPSocket(protocol));
}
int TCPSocket::protocol_receive(const ByteBuffer& packet_buffer, void* buffer, size_t buffer_size, int flags)
int TCPSocket::protocol_receive(const KBuffer& packet_buffer, void* buffer, size_t buffer_size, int flags)
{
(void)flags;
ASSERT(!packet_buffer.is_null());
auto& ipv4_packet = *(const IPv4Packet*)(packet_buffer.pointer());
auto& ipv4_packet = *(const IPv4Packet*)(packet_buffer.data());
auto& tcp_packet = *static_cast<const TCPPacket*>(ipv4_packet.payload());
size_t payload_size = packet_buffer.size() - sizeof(IPv4Packet) - tcp_packet.header_size();
#ifdef TCP_SOCKET_DEBUG