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Kernel: Coalesce TCP ACKs

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Previously we'd send a TCP ACK for each TCP packet we received. This
changes NetworkTask so that we send fewer TCP ACKs.
This commit is contained in:
Gunnar Beutner 2021-05-12 09:14:37 +02:00 • committed by Andreas Kling
parent ffc6b714b0
commit af59f64bc0
3 changed files with 81 additions and 8 deletions
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6
Kernel/Net/TCPSocket.h
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@ -133,10 +133,13 @@ public:
void set_duplicate_acks(u32 acks) { m_duplicate_acks = acks; }
u32 duplicate_acks() const { return m_duplicate_acks; }
KResult send_ack(bool allow_duplicate = false);
KResult send_tcp_packet(u16 flags, const UserOrKernelBuffer* = nullptr, size_t = 0);
void send_outgoing_packets(RoutingDecision&);
void receive_tcp_packet(const TCPPacket&, u16 size);
bool should_delay_next_ack() const;
static Lockable<HashMap<IPv4SocketTuple, TCPSocket*>>& sockets_by_tuple();
static RefPtr<TCPSocket> from_tuple(const IPv4SocketTuple& tuple);
static RefPtr<TCPSocket> from_endpoints(const IPv4Address& local_address, u16 local_port, const IPv4Address& peer_address, u16 peer_port);
@ -194,6 +197,9 @@ private:
SinglyLinkedList<OutgoingPacket> m_not_acked;
u32 m_duplicate_acks { 0 };
u32 m_last_ack_number_sent { 0 };
Time m_last_ack_sent_time;
};
}