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More work on IPv4 sockets and /bin/ping.

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It's now actually possible to ping other hosts on the network! :^)
I've switched the "run" script over to starting QEMU with user networking
since that works better for my testing needs right now.
This commit is contained in:
Andreas Kling 2019-03-13 03:26:01 +01:00
parent ce7c302933
commit cf250e1245
7 changed files with 125 additions and 38 deletions
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11
Kernel/IPv4Socket.cpp
View file

@ -143,15 +143,16 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, cons
}
auto peer_address = IPv4Address((const byte*)&((const sockaddr_in*)addr)->sin_addr.s_addr);
#ifdef IPV4_SOCKET_DEBUG
kprintf("recvfrom: peer_address=%s\n", peer_address.to_string().characters());
#endif
ByteBuffer packet_buffer;
{
LOCKER(m_lock);
if (!m_receive_queue.is_empty()) {
packet_buffer = m_receive_queue.take_first();
m_can_read = m_receive_queue.is_empty();
m_can_read = !m_receive_queue.is_empty();
}
}
if (packet_buffer.is_null()) {
@ -163,7 +164,7 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, cons
ASSERT(m_can_read);
ASSERT(!m_receive_queue.is_empty());
packet_buffer = m_receive_queue.take_first();
m_can_read = m_receive_queue.is_empty();
m_can_read = !m_receive_queue.is_empty();
}
ASSERT(!packet_buffer.is_null());
auto& ipv4_packet = *(const IPv4Packet*)(packet_buffer.pointer());
@ -174,8 +175,10 @@ ssize_t IPv4Socket::recvfrom(void* buffer, size_t buffer_length, int flags, cons
void IPv4Socket::did_receive(ByteBuffer&& packet)
{
#ifdef IPV4_SOCKET_DEBUG
kprintf("IPv4Socket(%p): did_receive %d bytes\n", this, packet.size());
#endif
LOCKER(m_lock);
kprintf("IPv4Socket(%p): did_receive %d bytes\n", packet.size());
m_receive_queue.append(move(packet));
m_can_read = true;
}

8
Kernel/run
View file

@ -6,9 +6,11 @@ if [ "$1" = "b" ]; then
elif [ "$1" = "qn" ]; then
# ./run qn: qemu without network
qemu-system-i386 -s -m 32 -device e1000 -drive format=raw,file=.floppy-image,if=floppy -drive format=raw,file=_fs_contents #$@
else
echo run with net
# ./run: qemu with network
elif [ "$1" = "qtap" ]; then
# ./run qtap: qemu with tap
sudo qemu-system-i386 -s -m 32 -object filter-dump,id=hue,netdev=br0,file=e1000.pcap -netdev tap,ifname=tap0,id=br0 -device e1000,netdev=br0 -drive format=raw,file=.floppy-image,if=floppy -drive format=raw,file=_fs_contents
else
# ./run: qemu with user networking
qemu-system-i386 -s -m 32 -object filter-dump,id=hue,netdev=breh,file=e1000.pcap -netdev user,id=breh -device e1000,netdev=breh -drive format=raw,file=.floppy-image,if=floppy -drive format=raw,file=_fs_contents
fi

2
Kernel/types.h
View file

@ -13,7 +13,7 @@ typedef dword gid_t;
typedef signed_word pid_t;
typedef dword time_t;
typedef dword useconds_t;
typedef dword suseconds_t;
typedef signed_dword suseconds_t;
struct timeval {
time_t tv_sec;