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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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7
Kernel/Net/IPv4Socket.h
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@ -2,6 +2,7 @@
#include <AK/HashMap.h>
#include <AK/SinglyLinkedList.h>
#include <Kernel/KBuffer.h>
#include <Kernel/DoubleBuffer.h>
#include <Kernel/Lock.h>
#include <Kernel/Net/IPv4.h>
@ -33,7 +34,7 @@ public:
virtual ssize_t sendto(FileDescription&, const void*, size_t, int, const sockaddr*, socklen_t) override;
virtual ssize_t recvfrom(FileDescription&, void*, size_t, int flags, sockaddr*, socklen_t*) override;
void did_receive(const IPv4Address& peer_address, u16 peer_port, ByteBuffer&&);
void did_receive(const IPv4Address& peer_address, u16 peer_port, NonnullRefPtr<KBuffer>&&);
const IPv4Address& local_address() const;
u16 local_port() const { return m_local_port; }
@ -50,7 +51,7 @@ protected:
int allocate_local_port_if_needed();
virtual KResult protocol_bind() { return KSuccess; }
virtual int protocol_receive(const ByteBuffer&, void*, size_t, int) { return -ENOTIMPL; }
virtual int protocol_receive(const KBuffer&, void*, size_t, int) { return -ENOTIMPL; }
virtual int protocol_send(const void*, int) { return -ENOTIMPL; }
virtual KResult protocol_connect(FileDescription&, ShouldBlock) { return KSuccess; }
virtual int protocol_allocate_local_port() { return 0; }
@ -65,7 +66,7 @@ private:
struct ReceivedPacket {
IPv4Address peer_address;
u16 peer_port;
ByteBuffer data;
RefPtr<KBuffer> data;
};
SinglyLinkedList<ReceivedPacket> m_receive_queue;