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Kernel: Convert IPv4 socket list from HashTable to IntrusiveList

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There was no reason whatsoever to use a HashTable here. IntrusiveList
removes all the heap allocations and does everything more efficiently.
This commit is contained in:
Andreas Kling 2021-08-15 15:46:35 +02:00
parent a154faebb7
commit 7063303022
3 changed files with 17 additions and 10 deletions
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10
Kernel/Net/IPv4Socket.cpp
View file

@ -26,13 +26,13 @@
namespace Kernel {
static Singleton<ProtectedValue<HashTable<IPv4Socket*>>> s_table;
static Singleton<ProtectedValue<IPv4Socket::List>> s_all_sockets;
using BlockFlags = Thread::FileDescriptionBlocker::BlockFlags;
ProtectedValue<HashTable<IPv4Socket*>>& IPv4Socket::all_sockets()
ProtectedValue<IPv4Socket::List>& IPv4Socket::all_sockets()
{
return *s_table;
return *s_all_sockets;
}
OwnPtr<DoubleBuffer> IPv4Socket::create_receive_buffer()
@ -79,14 +79,14 @@ IPv4Socket::IPv4Socket(int type, int protocol, NonnullOwnPtr<DoubleBuffer> recei
}
all_sockets().with_exclusive([&](auto& table) {
table.set(this);
table.append(*this);
});
}
IPv4Socket::~IPv4Socket()
{
all_sockets().with_exclusive([&](auto& table) {
table.remove(this);
table.remove(*this);
});
}

9
Kernel/Net/IPv4Socket.h
View file

@ -31,8 +31,6 @@ public:
static KResultOr<NonnullRefPtr<Socket>> create(int type, int protocol);
virtual ~IPv4Socket() override;
static ProtectedValue<HashTable<IPv4Socket*>>& all_sockets();
virtual KResult close() override;
virtual KResult bind(Userspace<const sockaddr*>, socklen_t) override;
virtual KResult connect(FileDescription&, Userspace<const sockaddr*>, socklen_t, ShouldBlock = ShouldBlock::Yes) override;
@ -131,6 +129,13 @@ private:
BufferMode m_buffer_mode { BufferMode::Packets };
OwnPtr<KBuffer> m_scratch_buffer;
IntrusiveListNode<IPv4Socket> m_list_node;
public:
using List = IntrusiveList<IPv4Socket, RawPtr<IPv4Socket>, &IPv4Socket::m_list_node>;
static ProtectedValue<IPv4Socket::List>& all_sockets();
};
}

8
Kernel/Net/NetworkTask.cpp
View file

@ -224,9 +224,11 @@ void handle_icmp(EthernetFrameHeader const& eth, IPv4Packet const& ipv4_packet,
{
NonnullRefPtrVector<IPv4Socket> icmp_sockets;
IPv4Socket::all_sockets().for_each_shared([&](const auto& socket) {
if (socket->protocol() == (unsigned)IPv4Protocol::ICMP)
icmp_sockets.append(*socket);
IPv4Socket::all_sockets().with_exclusive([&](auto& sockets) {
for (auto& socket : sockets) {
if (socket.protocol() == (unsigned)IPv4Protocol::ICMP)
icmp_sockets.append(socket);
}
});
for (auto& socket : icmp_sockets)
socket.did_receive(ipv4_packet.source(), 0, { &ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size() }, packet_timestamp);