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2010-10-06net: delay freeing peer host deviceMichael S. Tsirkin
With -netdev, virtio devices present offload features to guest, depending on the backend used. Thus, removing host netdev peer while guest is active leads to guest-visible inconsistency and/or crashes. As a solution, while guest (NIC) peer device exists, we prevent the host peer from being deleted. This patch does this by adding peer_deleted flag in nic state: if host device is going away while guest device is around, set this flag and keep a shell of the host device around for as long as guest device exists. The link is put down so all packets will get discarded. At the moment, management can detect that device deletion is delayed by doing info net. As a next step, we shall add commands that control hotplug/unplug without removing the device, and an event to report that guest has responded to the hotplug event. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2010-06-13Move stdbool.hPaul Brook
Move inclusion of stdbool.h to common header files, instead of including in an ad-hoc manner. Signed-off-by: Paul Brook <paul@codesourcery.com>
2010-04-18monitor: Convert do_set_link() to QObject, QErrorMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-18monitor: New commands netdev_add, netdev_delMarkus Armbruster
Monitor commands to go with -netdev. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2010-04-10net: remove broken net_set_boot_mask() boot device validationEduardo Habkost
There are many problems with net_set_boot_mask(): 1) It is broken when using the device model instead of "-net nic". Example: $ qemu-system-x86_64 -device rtl8139,vlan=0,id=net0,mac=52:54:00:82:41:fd,bus=pci.0,addr=0x4 -net user,vlan=0,name=hostnet0 -vnc 0.0.0.0:0 -boot n Cannot boot from non-existent NIC $ 2) The mask was previously used to set which boot ROMs were supposed to be loaded, but this was changed long time ago. Now all ROM images are loaded, and SeaBIOS takes care of jumping to the right boot entry point depending on the boot settings. 3) Interpretation and validation of the boot parameter letters is done on the machine type code. Examples: PC accepts only a,b,c,d,n as valid boot device letters. mac99 accepts only a,b,c,d,e,f. As a side-effect of this change, qemu-kvm won't abort anymore if using "-boot n" on a machine with no network devices. Checking if the requested boot device is valid is now a task for the BIOS or the machine-type code. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-04-10net: remove NICInfo.bootable fieldEduardo Habkost
It is just set by net_set_boot_mask() and never used. The logic for rom loading changed a lot since this field was introduced. It is not needed anymore. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-03-08qdev: Add a DEV_NVECTORS_UNSPECIFIED enum for unspecified nr of MSI vectorsAmit Shah
net.c used a constant to signify no MSI vectors were specified. Extend that to all qdev devices. Signed-off-by: Amit Shah <amit.shah@redhat.com> Reported-by: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-19net: Fix bogus "Warning: vlan 0 with no nics" with -deviceMarkus Armbruster
net_check_clients() prints this when an VLAN has host devices, but no guest devices. It uses VLANState members nb_guest_devs and nb_host_devs to keep track of these devices. However, -device does not update nb_guest_devs, only net_init_nic() does that, for -net nic. Check the VLAN clients directly, and remove the counters. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-19net: net_check_clients() runs too early to see -device, fixMarkus Armbruster
Call it right after -device devices get created. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-02-19net: Remove unused net_client_uninit()Markus Armbruster
Unused since commit 9ad4531e. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-08net: add API to disable/enable pollingMichael S. Tsirkin
When vhost is bound to a backend device, we need to stop polling it when vhost is started, and restart polling when vhost is stopped. Add an API for that for use by vhost, and implement in tap backend. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12default devices: networkGerd Hoffmann
Add a default_net variable which specified whenever a default network should be created. It is cleared in case any -net option is specified and it is also added to the new -nodefaults switch. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: add qemu_foreach_nic()Mark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: remove VLANClientState members now in NetClientInfoMark McLoughlin
Add a NetClientInfo pointer to VLANClientState and use that for the typecode and function pointers. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: remove qemu_new_vlan_client()Mark McLoughlin
... and VLANClientState::opaque and qemu_find_vlan_client(). All of these are now unused Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: introduce NICState and qemu_new_nic()Mark McLoughlin
Common state for all NICs. The opaque member will replace the opaque member in VLANClientState since only NICs need it. The conf member will allow us to iterate over NICs, access the MAC addr for the NIC and send a packet from each NIC in qemu_announce_self(). Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: introduce qemu_new_net_client()Mark McLoughlin
A replacement for qemu_new_vlan_client(), using NetClientInfo to replace most arguments. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: introduce NetClientInfoMark McLoughlin
This structure holds data which is common to all instances of a given net client type/model. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: remove NICInfo::privateMark McLoughlin
Was used by hot-unplug, but not anymore. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: remove NICInfo::vcMark McLoughlin
Since 1cc33683, this field is not set for most devices, so just remove it and its remaining few uses. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03net: move slirp code from net.c to net/slirp.cMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09net: disable receiving if client returns zeroMark McLoughlin
If a receiver returns zero, that means its queue is full and it will notify us when room is available using qemu_flush_queued_packets(). Take note of that and disable that receiver until it flushes its queue. This is a first step towards allowing can_receive() handlers to return true even if no buffer space is available. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: split all the tap code out into net/tap.cMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: move more stuff into net/tap-win32.c, add net/tap.hMark McLoughlin
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: move net-checksum.c under net/Mark McLoughlin
Also add a new net/checksum.h header Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: move net-queue.[ch] under net/Mark McLoughlin
[v2: handle building in a separate dir] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27really fix net.hAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Fix signature of new_vlan_clientAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Enable UFO on virtio-net and tap devicesSridhar Samudrala
Enable UFO on the host tap device if supported and allow setting UFO on virtio-net in the guest. Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add tap_set_offload()Mark McLoughlin
This API allows virtio-net to enable various offload features on a tap interface - e.g. to tell the host kernel it can pass up partial checksums to userspace. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add receive_raw parameter to qemu_new_vlan_client()Mark McLoughlin
Trivial patch to allow supplying a receive_raw function. A future cleanup should combine this function pointer parameters into a table. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add an API for 'raw' packetsMark McLoughlin
In the case where a NIC and backend agree on a packet header format, this API allows injecting packets which lack the agreed upon header. We need this for sending our gratuitous ARP. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add tap_has_vnet_hdr() and tap_using_vnet_hdr() APIsMark McLoughlin
These lamely named functions allow virtio-net to query whether IFF_VNET_HDR is enabled on a tap interface and inform the tap code that virtio-net will supply packets with a vnet header. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add a client type codeMark McLoughlin
This is so as to allow APIs which operate on specific client types without having to add a function table entry which is only implemented by a single client type. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27zap DeviceState->ndGerd Hoffmann
No users left. Also cleanup obsolete helper functions. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27qdev/net: common nic property bitsGerd Hoffmann
Add a new type for properties common to all nics. Add helper functions and macros to deal with it. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27qdev: add netdev propertyGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: add macaddr type.Gerd Hoffmann
Add new type for mac addresses. Add function which sets the qemu default mac address if it finds the mac address uninitialized (i.e. all zeros). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: add queue for peer-to-peer packet forwardingMark McLoughlin
Now that we have re-factored the packet queue code, we can re-use it for peer-to-peer also. Patchworks-ID: 35520 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: refactor packet queueing codeMark McLoughlin
The packet queue code is fairly standalone, has some complex details and easily reusable. It makes sense to split it out on its own. This patch doesn't contain any functional changes. Patchworks-ID: 35511 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: allow NICs to be connected to netdevsMark McLoughlin
Introduce a 'peer' member to VLANClientState as an alternative to a vlan. The idea being that packets are transfered directly from peer clients rather than going through a vlan. Patchworks-ID: 35516 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: add -net nic,netdev= optionMark McLoughlin
Patchworks-ID: 35515 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: handle -netdevice optionsMark McLoughlin
Same as for -net except for: - only tap, user, vde and socket types are supported - the vlan parameter is not allowed - the name parameter is not allowed but the id parameter is required Patchworks-ID: 35517 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: add QemuOptsList arg to net_client_parse()Mark McLoughlin
Patchworks-ID: 35505 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: use qtailq for vlan and client listsMark McLoughlin
Patchworks-ID: 35507 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: remove id field from NICInfoMark McLoughlin
Just use the name field instead since we now use the id paramater as the name, if supplied. Only implication with this change is that if id is not supplied, the value of the name paramater is used as an id. Patchworks-ID: 35512 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15net: remove unused qemu_handler_true()Mark McLoughlin
Patchworks-ID: 35504 Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Final net cleanup after conversion to QemuOptsMark McLoughlin
Now that net_client_init() has no users, kill it off and rename net_client_init_from_opts(). There is no further need for the old code in net_client_parse() either. We use qemu_opts_parse() 'firstname' facitity for that. Instead, move the special handling of the 'vmchannel' type there. Simplify the vl.c code into merely call net_client_parse() for each -net command line option and then calling net_init_clients() later to iterate over the options and create the clients. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Port usb net to QemuOptsMark McLoughlin
We need net_client_init_from_opts() exported for this Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-06Don't exit() in config_error()Markus Armbruster
Propagating errors up the call chain is tedious. In startup code, we can take a shortcut: terminate the program. This is wrong elsewhere, the monitor in particular. config_error() tries to cater for both customers: it terminates the program unless its mon parameter tells it it's working for the monitor. Its users need to return status anyway (unless passing a null mon argument, which none do), which their users need to check. So this automatic exit buys us exactly nothing useful. Only the dangerous delusion that we can get away without returning status. Some of its users fell for that. Their callers continue executing after failure when working for the monitor. This bites monitor command host_net_add in two places: * net_slirp_init() continues after slirp_hostfwd(), slirp_guestfwd(), or slirp_smb() failed, and may end up reporting success. This happens for "host_net_add user guestfwd=foo": it complains about the invalid guest forwarding rule, then happily creates the user network without guest forwarding. * net_client_init() can't detect slirp_guestfwd() failure, and gets fooled by net_slirp_init() lying about success. Suppresses its "Could not initialize device" message. Add the missing error reporting, make sure errors are checked, and drop the exit() from config_error(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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