[These patches are based on Laszlo Ersek's net OptsVisitor series.]
The QEMU net subsystem has the concept of separate network segments, called
"VLANs". Each VLAN is a broadcast domain so all net clients connected to the
same VLAN can communicate with each other.
Today this feature is mostly used with the "dump" backend, which saves packet
captures to .pcap files. It can still come in useful in other rare cases.
This patch series moves the VLAN code out of net.c and into net/hub.c. The
idea is to introduce a software network hub along with hub port net clients.
This way we can implement the same semantics of QEMU VLANs using just -netdev
peer. Then -netdev peer becomes the single method of connecting net clients.
The end result of this series is that the net subsystem core is simplified.
Now is a good time to do this because it saves us from modeling QEMU VLANs when
we convert the net subsystem to QOM.
Please note that this series preserves command-line compatibility with the QEMU
VLAN feature. No existing QEMU command-lines should break.
I have tested the following configurations:
* -net user -net nic,model=virtio
* -net user,vlan=1 -net nic,model=virtio,vlan=1
* -net user,vlan=1 -net nic,model=virtio,vlan=1 -net user,vlan=2 -net
nic,model=virtio,vlan=2
* -netdev user,id=netdev0 -device virtio-net-pci,netdev=netdev0
* -netdev user,id=netdev0 -device virtio-net-pci,netdev=netdev0 -net
user,vlan=2 -net nic,model=virtio,vlan=2
Stefan Hajnoczi (11):
net: Add a hub net client
net: Use hubs for the vlan feature
net: Look up 'vlan' net clients using hubs
hub: Check that hubs are configured correctly
net: Drop vlan argument to qemu_new_net_client()
net: Remove vlan code from net.c
net: Remove VLANState
net: Rename non_vlan_clients to net_clients
net: Rename VLANClientState to NetClientState
net: Rename vc local variables to nc
net: Rename qemu_del_vlan_client() to qemu_del_net_client()
Zhi Yong Wu (5):
net: Convert qdev_prop_vlan to peer with hub
net: Make "info network" output more readable info
net: cleanup deliver/deliver_iov func pointers
net: determine if packets can be sent before net queue deliver
packets
hub: add the support for hub own flow control
hw/cadence_gem.c | 8 +-
hw/dp8393x.c | 7 +-
hw/e1000.c | 10 +-
hw/eepro100.c | 8 +-
hw/etraxfs_eth.c | 8 +-
hw/exynos4_boards.c | 2 +-
hw/highbank.c | 2 +-
hw/integratorcp.c | 2 +-
hw/kzm.c | 2 +-
hw/lan9118.c | 8 +-
hw/lance.c | 2 +-
hw/mcf5208.c | 2 +-
hw/mcf_fec.c | 7 +-
hw/milkymist-minimac2.c | 6 +-
hw/mips_mipssim.c | 2 +-
hw/mips_r4k.c | 2 +-
hw/mipsnet.c | 6 +-
hw/musicpal.c | 6 +-
hw/ne2000-isa.c | 2 +-
hw/ne2000.c | 8 +-
hw/ne2000.h | 4 +-
hw/opencores_eth.c | 8 +-
hw/pcnet-pci.c | 4 +-
hw/pcnet.c | 6 +-
hw/pcnet.h | 6 +-
hw/qdev-properties.c | 50 ++--
hw/qdev.c | 2 -
hw/qdev.h | 7 +-
hw/rtl8139.c | 10 +-
hw/smc91c111.c | 6 +-
hw/spapr_llan.c | 4 +-
hw/stellaris_enet.c | 6 +-
hw/usb/dev-network.c | 8 +-
hw/vexpress.c | 2 +-
hw/vhost_net.c | 24 +-
hw/vhost_net.h | 2 +-
hw/virtio-net.c | 12 +-
hw/xen_nic.c | 7 +-
hw/xgmac.c | 6 +-
hw/xilinx_axienet.c | 6 +-
hw/xilinx_ethlite.c | 6 +-
hw/xtensa_lx60.c | 2 +-
net.c | 618 ++++++++++++++---------------------------------
net.h | 86 +++----
net/Makefile.objs | 2 +-
net/dump.c | 27 ++-
net/dump.h | 2 +-
net/hub.c | 357 +++++++++++++++++++++++++++
net/hub.h | 31 +++
net/queue.c | 38 ++-
net/queue.h | 25 +-
net/slirp.c | 34 ++-
net/slirp.h | 2 +-
net/socket.c | 64 ++---
net/socket.h | 2 +-
net/tap-win32.c | 26 +-
net/tap.c | 44 ++--
net/tap.h | 20 +-
net/vde.c | 16 +-
net/vde.h | 2 +-
qapi-schema.json | 30 ++-
qemu-common.h | 3 +-
slirp/if.c | 5 -
slirp/libslirp.h | 1 -
64 files changed, 927 insertions(+), 796 deletions(-)
create mode 100644 net/hub.c
create mode 100644 net/hub.h
--
1.7.10.4
