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Kernel: Handle OOM from DoubleBuffer usage in IPv4Socket

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The IPv4Socket requires a DoubleBuffer for storage of any data it
received on the socket. However it was previously using the default
constructor which can not observe allocation failure. Address this by
plumbing the receive buffer through the various derived classes.
This commit is contained in:
Brian Gianforcaro 2021-08-01 02:42:03 -07:00 • committed by Andreas Kling
parent 109c885585
commit ca94a83337
6 changed files with 41 additions and 26 deletions
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6
Kernel/Net/IPv4Socket.h
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@ -74,7 +74,7 @@ public:
BufferMode buffer_mode() const { return m_buffer_mode; }
protected:
IPv4Socket(int type, int protocol);
IPv4Socket(int type, int protocol, NonnullOwnPtr<DoubleBuffer> receive_buffer);
virtual StringView class_name() const override { return "IPv4Socket"; }
PortAllocationResult allocate_local_port_if_needed();
@ -92,6 +92,8 @@ protected:
void set_local_address(IPv4Address address) { m_local_address = address; }
void set_peer_address(IPv4Address address) { m_peer_address = address; }
static OwnPtr<DoubleBuffer> create_receive_buffer();
private:
virtual bool is_ipv4() const override { return true; }
@ -115,7 +117,7 @@ private:
SinglyLinkedListWithCount<ReceivedPacket> m_receive_queue;
DoubleBuffer m_receive_buffer { 256 * KiB };
NonnullOwnPtr<DoubleBuffer> m_receive_buffer;
u16 m_local_port { 0 };
u16 m_peer_port { 0 };