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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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8
Kernel/Net/NetworkTask.cpp
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@@ -203,7 +203,7 @@ void handle_icmp(const EthernetFrameHeader& eth, int frame_size)
LOCKER(socket->lock());
if (socket->protocol() != (unsigned)IPv4Protocol::ICMP)
continue;
socket->did_receive(ipv4_packet.source(), 0, ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), 0, KBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}
}
@@ -260,7 +260,7 @@ void handle_udp(const EthernetFrameHeader& eth, int frame_size)
ASSERT(socket->type() == SOCK_DGRAM);
ASSERT(socket->local_port() == udp_packet.destination_port());
socket->did_receive(ipv4_packet.source(), udp_packet.source_port(), ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), udp_packet.source_port(), KBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}
void handle_tcp(const EthernetFrameHeader& eth, int frame_size)
@@ -319,7 +319,7 @@ void handle_tcp(const EthernetFrameHeader& eth, int frame_size)
kprintf("handle_tcp: Got FIN, payload_size=%u\n", payload_size);
if (payload_size != 0)
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), KBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->set_ack_number(tcp_packet.sequence_number() + payload_size + 1);
socket->send_tcp_packet(TCPFlags::FIN | TCPFlags::ACK);
@@ -340,5 +340,5 @@ void handle_tcp(const EthernetFrameHeader& eth, int frame_size)
socket->send_tcp_packet(TCPFlags::ACK);
if (payload_size != 0)
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), KBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}