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IPv4: Save the source address/port together with incoming packet payloads.

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We need the address/port to fill in the out-params in recvfrom().
It should now be more or less possible to create a UDP server. :^)
This commit is contained in:
Andreas Kling
2019-05-04 03:27:50 +02:00
parent c4bb9a3ccb
commit 780d2a08c4
6 changed files with 29 additions and 21 deletions
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8
Kernel/Net/NetworkTask.cpp
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@@ -218,7 +218,7 @@ void handle_icmp(const EthernetFrameHeader& eth, int frame_size)
LOCKER(socket->lock());
if (socket->protocol() != (unsigned)IPv4Protocol::ICMP)
continue;
socket->did_receive(ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), 0, ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}
}
@@ -277,7 +277,7 @@ void handle_udp(const EthernetFrameHeader& eth, int frame_size)
ASSERT(socket->type() == SOCK_DGRAM);
ASSERT(socket->source_port() == udp_packet.destination_port());
socket->did_receive(ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), udp_packet.source_port(), ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}
void handle_tcp(const EthernetFrameHeader& eth, int frame_size)
@@ -337,7 +337,7 @@ 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(ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), ByteBuffer::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);
@@ -357,5 +357,5 @@ void handle_tcp(const EthernetFrameHeader& eth, int frame_size)
socket->send_tcp_packet(TCPFlags::ACK);
if (payload_size != 0)
socket->did_receive(ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
socket->did_receive(ipv4_packet.source(), tcp_packet.source_port(), ByteBuffer::copy(&ipv4_packet, sizeof(IPv4Packet) + ipv4_packet.payload_size()));
}