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path: root/hw/virtio-net.h
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2013-03-18virtio: make virtio device's structures public.KONRAD Frederic
These structures must be made public to avoid two memory allocations for refactored virtio devices. Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Reviewed-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Message-id: 1363624648-16906-2-git-send-email-fred.konrad@greensocs.com Changes V4 <- V3: * Rebased on current git. Changes V3 <- V2: * Style correction spotted by Andreas (virtio-scsi.h). * Style correction for virtio-net.h. Changes V2 <- V1: * Move the dataplane include into the header (virtio-blk). Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-03-01hw: include hw header files with full pathsPaolo Bonzini
Done with this script: cd hw for i in `find . -name '*.h' | sed 's/^..//'`; do echo '\,^#.*include.*["<]'$i'[">], s,'$i',hw/&,' done | sed -i -f - `find . -type f` This is so that paths remain valid as files are moved. Instead, files in hw/dataplane are referenced with the relative path. We know they are not going to move to include/, and they are the only include files that are in subdirectories _and_ move. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-02-08hw/virtio-net: disable multiqueue by defaultJesse Larrew
The new multiqueue feature adds fields to the virtio device config, which breaks Windows guests. Disable the feature by default until the Windows drivers are fixed. Signed-off-by: Jesse Larrew <jlarrew@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-02-01virtio-net: multiqueue supportJason Wang
This patch implements both userspace and vhost support for multiple queue virtio-net (VIRTIO_NET_F_MQ). This is done by introducing an array of VirtIONetQueue to VirtIONet. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-30virtio-net: rename ctrl rx commandsAmos Kong
This patch makes rx commands consistent with specification. Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-01-30virtio-net: introduce a new macaddr controlAmos Kong
In virtio-net guest driver, currently we write MAC address to pci config space byte by byte, this means that we have an intermediate step where mac is wrong. This patch introduced a new control command to set MAC address, it's atomic. VIRTIO_NET_F_CTRL_MAC_ADDR is a new feature bit for compatibility. "mac" field will be set to read-only when VIRTIO_NET_F_CTRL_MAC_ADDR is acked. Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-19net: reorganize headersPaolo Bonzini
Move public headers to include/net, and leave private headers in net/. Put the virtio headers in include/net/tap.h, removing the multiple copies that existed. Leave include/net/tap.h as the interface for NICs, and net/tap_int.h as the interface for OS-specific parts of the tap backend. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19net: do not include net.h everywherePaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-17pci: update all users to look in pci/Michael S. Tsirkin
update all users so we can remove the makefile hack. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-03-16virtio-net: add DATA_VALID flagMichael S. Tsirkin
Add DATA_VALID flag from the Linux header, to keep us in sync with that. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-09-03Use new macro QEMU_PACKED for packed structuresStefan Weil
Most changes were made using these commands: git grep -la '__attribute__((packed))'|xargs perl -pi -e 's/__attribute__\(\(packed\)\)/QEMU_PACKED/' git grep -la '__attribute__ ((packed))'|xargs perl -pi -e 's/__attribute__ \(\(packed\)\)/QEMU_PACKED/' git grep -la '__attribute__((__packed__))'|xargs perl -pi -e 's/__attribute__\(\(__packed__\)\)/QEMU_PACKED/' git grep -la '__attribute__ ((__packed__))'|xargs perl -pi -e 's/__attribute__ \(\(__packed__\)\)/QEMU_PACKED/' git grep -la '__attribute((packed))'|xargs perl -pi -e 's/__attribute\(\(packed\)\)/QEMU_PACKED/' Whitespace in linux-user/syscall_defs.h was fixed manually to avoid warnings from scripts/checkpatch.pl. Manual changes were also applied to hw/pc.c. I did not fix indentation with tabs in block/vvfat.c. The patch will show 4 errors with scripts/checkpatch.pl. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-07virtio-net: Introduce a new bottom half packet TXAlex Williamson
Based on a patch from Mark McLoughlin, this patch introduces a new bottom half packet transmitter that avoids the latency imposed by the tx_timer approach. Rather than scheduling a timer when a TX packet comes in, schedule a bottom half to be run from the iothread. The bottom half handler first attempts to flush the queue with notification disabled (this is where we could race with a guest without txburst). If we flush a full burst, reschedule immediately. If we send short of a full burst, try to re-enable notification. To avoid a race with TXs that may have occurred, we must then flush again. If we find some packets to send, the guest it probably active, so we can reschedule again. tx_timer and tx_bh are mutually exclusive, so we can re-use the tx_waiting flag to indicate one or the other needs to be setup. This allows us to seamlessly migrate between timer and bh TX handling. The bottom half handler becomes the new default and we add a new tx= option to virtio-net-pci. Usage: -device virtio-net-pci,tx=timer # select timer mitigation vs "bh" Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07virtio-net: Limit number of packets sent per TX flushAlex Williamson
If virtio_net_flush_tx() is called with notification disabled, we can race with the guest, processing packets at the same rate as they get produced. The trouble is that this means we have no guaranteed exit condition from the function and can spend minutes in there. Currently flush_tx is only called with notification on, which seems to limit us to one pass through the queue per call. An upcoming patch changes this. Also add an option to set this value on the command line as different workloads may wish to use different values. We can't necessarily support any random value, so this is a developer option: x-txburst= Usage: -device virtio-net-pci,x-txburst=64 # 64 packets per tx flush One pass through the queue (256) seems to be a good default value for this, balancing latency with throughput. We use a signed int for x-txburst because 2^31 packets in a burst would take many, many minutes to process and it allows us to easily return a negative value value from virtio_net_flush_tx() to indicate a back-off or error condition. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-09-07virtio-net: Make tx_timer timeout configurableAlex Williamson
Add an option to make the TX mitigation timer adjustable as a device option. The 150us hard coded default used currently is reasonable, but may not be suitable for all workloads, this gives us a way to adjust it using a single binary. We can't support any random option though, so use the "x-" prefix to indicate this is a developer option. Usage: -device virtio-net-pci,x-txtimer=500000,... # .5ms timeout Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-05-24Virtio-net: Replace the hardcode 6 with defined ETN_ALENAmos Kong
hw/virtio-net.h: #define ETH_ALEN 6 ETH_ALEN was defined by commit 7967406801aa897fae83caad3278ac85a342adaa Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-12virtio-net: mac property is mandatoryMichael S. Tsirkin
Mac feature bit isn't going to work as all network cards already have a 'mac' property to set the mac address. Remove it from mask and add in get_features. Reported-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-11virtio: add features as qdev propertiesMichael S. Tsirkin
Add feature bits as properties to virtio. This makes it possible to e.g. define machine without indirect buffer support, which is required for 0.10 compatibility, or without hardware checksum support, which is required for 0.11 compatibility. Since default values for optional features are now set by qdev, get_features callback has been modified: it sets non-optional bits, and clears bits not supported by host. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-09virtio-net: Add new RX filter controlsAlex Williamson
Add a few new RX modes to better control the receive_filter. These are all fairly obvious features that hardware could provide. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Mark McLoughlin <markmc@redhat.com>
2009-05-14Virtio-net qdev conversionPaul Brook
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-02-11qemu: return PCIDevice on net device init and record devfn (Marcelo Tosatti)aliguori
Change the PCI network drivers init functions to return the PCIDev, to inform which slot has been hot-plugged. Also record PCIDevice structure on NICInfo to locate for release on hot-removal. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6593 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05qemu:virtio-net: Add VLAN filtering (Alex Williamson)aliguori
Use the control virtqueue to allow the guest to enable and manipulate a VLAN filter table. This allows us to drop more packets the guest doesn't want to see. We define a new VLAN class for the control virtqueue with commands ADD and DEL with usage defined in virtio-net.h. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6540 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05qemu:virtio-net: Add additional MACs via a filter table (Alex Williamson)aliguori
Create a filter table and allow the guest to populate it with the MAC class control commands. We manage the size and usage of the filter table including enabling promiscuous and all-multi modes as necessary. The guest should therefore assume the table is infinite. Eventually this might allow us to bind directly to a hardware NIC and manipulate a physical MAC filter. The specifics of the TABLE_SET command are documented in virtio-net.h. Separate buffers in the same command are used for unicaste and multicast addresses for priority and sychronization. With this we can export the VIRTIO_NET_F_CTRL_RX feature bit. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6539 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05qemu:virtio-net: Add promiscuous and all-multicast mode bits (Alex Williamson)aliguori
Add a new RX_MODE control virtqueue class with commands PROMISC and ALLMULTI and usage documented in virtio-net.h allowing the guest to manipulate packet receiving options. We don't export a feature for this until we also add the MAC filter table. Note, for compatibility with older guest drivers we need to default to promiscuous. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6537 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05qemu:virtio-net: Add a virtqueue for control commands from the guest (Alex ↵aliguori
Williamson) This will be used for RX mode, MAC table, VLAN table control, etc... The control transaction consists of one or more "out" sg entries and one or more "in" sg entries. The first out entry contains a header defining the class and command. Additional out entries may provide data for the command. A response via the ack entry is required and the guest will typically be waiting for it. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6536 c046a42c-6fe2-441c-8c8c-71466251a162
2009-02-05qemu:virtio-net: Define ETH_ALEN for use when manipulating MAC addresses ↵aliguori
(Alex Williamson) Makes it much easier to search too. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6535 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-13Make virtio_net_init() return void (Mark McLoughlin)aliguori
All PCI NIC init functions return void and nothing uses the return value from virtio_net_init(). Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6291 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-08Implement virtio_net link status (Mark McLoughlin)aliguori
Implement the VIRTIO_NET_F_STATUS feature by exposing the link status through virtio_net_config::status. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6250 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-17virtio-net supportaliguori
This adds virtio-net support. This is based on the virtio-net driver that exists in kvm-userspace. This also adds a new qemu_sendv_packet which virtio-net requires. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6073 c046a42c-6fe2-441c-8c8c-71466251a162
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