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2009-10-30net: move solaris code to net/tap-solaris.cMark McLoughlin4-165/+191
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: split BSD tap_open() out into net/tap-bsd.cMark McLoughlin4-46/+69
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 McLoughlin4-691/+763
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: move tap-linux.h under net/Mark McLoughlin2-1/+1
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 McLoughlin6-75/+100
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-30net: move tap-win32.c under net/Mark McLoughlin2-1/+1
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 McLoughlin7-9/+119
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 McLoughlin5-6/+10
[v2: handle building in a separate dir] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Revert "char: emit the OPENED event only when a new char connection is opened"Anthony Liguori2-8/+1
This reverts commit 6cfa64de908d67fb6f6b6e3ae4888dd863f69e44. This breaks the monitor prompt. Proper fix will come from Amit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27really fix net.hAnthony Liguori1-1/+1
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Fix signature of new_vlan_clientAnthony Liguori1-1/+2
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27virtio-net: add tap_has_ufo flag to saved stateMark McLoughlin1-2/+21
If we tell the guest we support UFO and then migrate to host which doesn't support it, we will find ourselves in grave difficulties. Prevent this scenario by adding a flag to virtio-net's savevm format which indicates whether the device requires host UFO support. [v2: - add has_ufo uint8_t field for ease of vmstate conversion - use qemu_error() ] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Enable UFO on virtio-net and tap devicesSridhar Samudrala4-7/+44
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>
2009-10-27Work around dhclient brokennessAnthony Liguori1-0/+29
With the latest GSO/csum offload patches, any guest using an unpatched version of dhclient (any Ubuntu guest, for instance), will no longer be able to get a DHCP address. dhclient is actually at fault here. It uses AF_PACKET to receive DHCP responses but does not check auxdata to see if the packet has a valid csum. This causes it to throw out the DHCP responses it gets from the virtio interface as there is not a valid checksum. Fedora has carried a patch to fix their dhclient (it's needed for Xen too) but this patch has not made it into a release of dhclient. AFAIK, the patch is in the dhclient CVS but I cannot confirm since their CVS is not public. This patch, suggested by Rusty, looks for UDP packets (of a normal MTU) and explicitly adds a checksum to them if they are missing one. This allows unpatched dhclients to continue to work without needing to update the guest kernels. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27virtio-net: enable tap offload if guest supports itMark McLoughlin1-0/+18
We query the guest's feature set to see if it supports offload and, if so, we enable those features on the tap interface. 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 McLoughlin3-0/+32
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>
2009-10-27virtio-net: add vnet_hdr supportMark McLoughlin1-7/+44
With '-netdev tap,id=foo -nic model=virtio,netdev=foo' virtio-net can detect that its peer (i.e. the tap backend) supports vnet headers and advertise to the guest that it can send packets with partial checksums and/or TSO packets. One complication is that if we're migrating and the source host supports IFF_VNET_HDR but the destination host doesn't, we can't then stop the guest from using those features. In this scenario, we just fail the migration. [v2: - add has_vnet_hdr uint32_t field for ease of vmstate conversion - use qemu_error() ] Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: implement tap support for receive_raw()Mark McLoughlin1-4/+19
tap_receive_raw() always prepends a vnet header if IFF_VNET_HDR is enabled. tap_receive() only prepends when the a header is required but the NIC doesn't supply one. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: use qemu_send_packet_raw() in qemu_announce_self()Gleb Natapov1-6/+1
Use qemu_send_packet_raw to send gratuitous arp. This will ensure that vnet header is handled properly. Also, avoid sending the gratuitous packet to the guest. There doesn't appear to be any reason for doing that and the code will currently just crash if the NIC is not associated with a vlan. Signed-off-by: Gleb Natapov <gleb@redhat.com> 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 McLoughlin9-13/+16
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 McLoughlin3-8/+32
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 flags parameter to packet queue interfaceMark McLoughlin3-10/+36
This allows for the addition of a raw flag, and leaves the way open for other flags too. 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 McLoughlin2-4/+38
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 McLoughlin9-14/+40
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>
2009-10-27net: add a vnet_hdr=on|off parameterMark McLoughlin2-11/+35
This allows people to disable the IFF_VNET_HDR flag, e.g. for debugging purposes or if they know they may migrate the guest to a machine without IFF_VNET_HDR support. It also allows making the lack of IFF_VNET_HDR support an error condition, e.g. in the case where a guest is being migrated from a host which does support it. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: refactor tap initializationMark McLoughlin1-45/+52
Re-factor things so that there is only one call site for net_tap_fd_init(). Two concerns about the QemuOpts usage here - firstly, we set the script arguments to their default value and, secondly, we set the ifname value to the name allocated by the kernel if none is supplied. Are we okay with such things ending up in writeconfig output? Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: enable IFF_VNET_HDR on tap fds if availableMark McLoughlin2-13/+84
For now, we just add an empty header before writing and strip the header after reading. We really only want IFF_VNET_HDR when virtio_net is using it, but it would significantly complicate matters to try and do that. There should be little or no performance impact with always adding headers. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: make tap_receive() re-use tap_receive_iov() codeMark McLoughlin1-8/+15
In future we will want to prepend a virtio_net header if the NIC didn't supply one but IFF_VNET_HDR is enabled on the interface. This is most easily achived by using writev() in all cases. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: import linux tap ioctl definitionsMark McLoughlin3-17/+31
Making features dependent on the availability of newer versions if_tun.h is going to get seriously clumsy, so let's just import the definitions we need. It's only a small handful. If and when we're comfortable depending on 2.6.30 headers, we can remove this again. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27net: remove unused includes of if_tun.h and if_tap.hMark McLoughlin3-18/+0
Looks like these are just artifacts of vl.c being split up. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Revert "qcow2: Bring synchronous read/write back to life"Kevin Wolf3-55/+5
It was merely a workaround and the real fix is done now. This reverts commit ef845c3bf421290153154635dc18eaa677cecb43. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27linux-aio: Honour AsyncContextKevin Wolf1-15/+72
Also for Linux AIO, don't call callbacks that don't belong to the active AsyncContext. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27posix-aio-compat: Honour AsyncContextKevin Wolf1-0/+12
Don't call callbacks that don't belong to the active AsyncContext. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27block: Use new AsyncContext for bdrv_read/write emulationKevin Wolf1-4/+18
bdrv_read/write emulation is used as the perfect example why we need something like AsyncContexts. So maybe they better start using it. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Introduce contexts for asynchronous callbacksKevin Wolf3-7/+110
Add the possibility to use AIO and BHs without allowing foreign callbacks to be run. Basically, you put your own AIOs and BHs in a separate context. For details see the comments in the source. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Split out bottom halvesKevin Wolf4-105/+132
Instead of putting more and more stuff into vl.c, let's have the generic functions that deal with asynchronous callbacks in their own file. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27Add qemu_aio_process_queue()Kevin Wolf5-6/+50
We'll leave some AIO completions unhandled when we can't call the callback. qemu_aio_process_queue() is used later to run any callbacks that are left and can be run then. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27posix-aio-compat: Split out posix_aio_process_queueKevin Wolf1-16/+27
We need to process the request queue and run callbacks separately from reading out the queue in a later patch, so split it out. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_closefd() to QObjectLuiz Capitulino2-2/+3
Note that errors are not being converted yet. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_getfd() to QObjectLuiz Capitulino2-2/+3
Note that errors are not being converted yet. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_eject() to QObjectLuiz Capitulino2-2/+3
Note that errors are not being converted yet. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_pci_device_hot_remove() to QObjectLuiz Capitulino3-3/+6
Errors are still directly printed, as we are only converting regular output. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_migrate_cancel() to QObjectLuiz Capitulino3-3/+4
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_migrate_set_speed() to QObjectLuiz Capitulino3-3/+4
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_migrate() to QObjectLuiz Capitulino3-3/+4
Error is still directly printed, as we are only converting regular output. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_physical_memory_save() to QObjectLuiz Capitulino2-2/+4
Note that errors are not being converted yet. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27monitor: Convert do_memory_save() to QObjectLuiz Capitulino2-2/+3
Note that errors are not being converted yet. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27lsi_scsi: port to vmstateJuan Quintela1-159/+83
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27vmstate: Add VMSTATE_BUFFER_UNSAFEJuan Quintela1-0/+9
Just sent <anything> as a buffer. We put the pointer and the size code does the rest. Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27vmware_vga: port to vmstateJuan Quintela1-72/+43
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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