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Kernel: Don't try to send TCP packets larger than the MSS

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Previously TCPSocket::send_tcp_packet() would try to send TCP packets
which matched whatever size the userspace program specified. We'd try to
break those packets up into smaller fragments, however a much better
approach is to limit TCP packets to the maximum segment size and
avoid fragmentation altogether.
This commit is contained in:
Gunnar Beutner 2021-05-25 21:29:37 +02:00 • committed by Andreas Kling
parent dce97678ae
commit c6299d1e5d
2 changed files with 10 additions and 4 deletions
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2
Kernel/Net/TCPSocket.h
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@ -136,7 +136,7 @@ public:
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);
KResult send_tcp_packet(u16 flags, const UserOrKernelBuffer* = nullptr, size_t = 0, RoutingDecision* = nullptr);
void receive_tcp_packet(const TCPPacket&, u16 size);
bool should_delay_next_ack() const;