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qemu/include/net/vhost_net.h

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vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
#ifndef VHOST_NET_H
#define VHOST_NET_H
net: reorganize headers 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>
2012-10-24 14:43:34 +08:00
#include "net/net.h"
Add vhost-backend and VhostBackendType Use vhost_set_backend_type to initialise a proper vhost_ops structure. In vhost_net_init and vhost_net_start_one call conditionally TAP related initialisation depending on the vhost backend type. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:49 +08:00
#include "hw/virtio/vhost-backend.h"
vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
struct vhost_net;
typedef struct vhost_net VHostNetState;
vhost_net_init will use VhostNetOptions to get all its arguments vhost_dev_init will replace devfd and devpath with a single opaque argument. This is initialised with a file descriptor. When TAP is used (through vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and pass the fd. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:22 +08:00
typedef struct VhostNetOptions {
Add vhost-backend and VhostBackendType Use vhost_set_backend_type to initialise a proper vhost_ops structure. In vhost_net_init and vhost_net_start_one call conditionally TAP related initialisation depending on the vhost backend type. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:49 +08:00
VhostBackendType backend_type;
vhost_net_init will use VhostNetOptions to get all its arguments vhost_dev_init will replace devfd and devpath with a single opaque argument. This is initialised with a file descriptor. When TAP is used (through vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and pass the fd. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:22 +08:00
NetClientState *net_backend;
tap: vhost busy polling support This patch add the capability of basic vhost net busy polling which is supported by recent kernel. User could configure the maximum number of us that could be spent on busy polling through a new property of tap "poll-us". Cc: Greg Kurz <groug@kaod.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-07-06 09:57:55 +08:00
uint32_t busyloop_timeout;
vhost_net_init will use VhostNetOptions to get all its arguments vhost_dev_init will replace devfd and devpath with a single opaque argument. This is initialised with a file descriptor. When TAP is used (through vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and pass the fd. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:22 +08:00
void *opaque;
} VhostNetOptions;
vhost-user: add VHOST_USER_GET_QUEUE_NUM message This is for querying how many queues the backend supports if it has mq support(when VHOST_USER_PROTOCOL_F_MQ flag is set from the quried protocol features). vhost_net_get_max_queues() is the interface to export that value, and to tell if the backend supports # of queues user requested, which is done in the following patch. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Tested-by: Marcel Apfelbaum <marcel@redhat.com>
2015-09-23 12:19:58 +08:00
uint64_t vhost_net_get_max_queues(VHostNetState *net);
vhost_net_init will use VhostNetOptions to get all its arguments vhost_dev_init will replace devfd and devpath with a single opaque argument. This is initialised with a file descriptor. When TAP is used (through vhost_net), open /dev/vhost-net and pass the fd as an opaque parameter in VhostNetOptions. The same applies to vhost-scsi - open /dev/vhost-scsi and pass the fd. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:22 +08:00
struct vhost_net *vhost_net_init(VhostNetOptions *options);
vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
vhost: multiqueue support This patch lets vhost support multiqueue. The idea is simple, just launching multiple threads of vhost and let each of vhost thread processing a subset of the virtqueues of the device. After this change each emulated device can have multiple vhost threads as its backend. To do this, a virtqueue index were introduced to record to first virtqueue that will be handled by this vhost_net device. Based on this and nvqs, vhost could calculate its relative index to setup vhost_net device. Since we may have many vhost/net devices for a virtio-net device. The setting of guest notifiers were moved out of the starting/stopping of a specific vhost thread. The vhost_net_{start|stop}() were renamed to vhost_net_{start|stop}_one(), and a new vhost_net_{start|stop}() were introduced to configure the guest notifiers and start/stop all vhost/vhost_net devices. Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-30 19:12:35 +08:00
int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, int total_queues);
void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, int total_queues);
vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
void vhost_net_cleanup(VHostNetState *net);
vhost: 64 bit features Make sure that all vhost interfaces use 64 bit features, as the virtio core does, and make sure to use ULL everywhere possible to be on the safe side. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
2015-06-04 18:34:20 +08:00
uint64_t vhost_net_get_features(VHostNetState *net, uint64_t features);
void vhost_net_ack_features(VHostNetState *net, uint64_t features);
vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
vhost: backend masking support Support backend guest notifier masking in vhost-net: create eventfd at device init, when masked, make vhost use that as eventfd instead of sending an interrupt. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-24 23:37:01 +08:00
bool vhost_net_virtqueue_pending(VHostNetState *net, int n);
void vhost_net_virtqueue_mask(VHostNetState *net, VirtIODevice *dev,
int idx, bool mask);
vhost user: add rarp sending after live migration for legacy guest A new vhost user message is added to allow QEMU to ask to vhost user backend to broadcast a fake RARP after live migration for guest without GUEST_ANNOUNCE capability. This new message is sent only if the backend supports the new VHOST_USER_PROTOCOL_F_RARP protocol feature. The payload of this new message is the MAC address of the guest (not known by the backend). The MAC address is copied in the first 6 bytes of a u64 to avoid to create a new payload message type. This new message has no equivalent ioctl so a new callback is added in the userOps structure to send the request. Upon reception of this new message the vhost user backend must generate and broadcast a fake RARP request to notify the migration is terminated. Signed-off-by: Thibaut Collet <thibaut.collet@6wind.com> [Rebased and fixed checkpatch errors - Marc-André] Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Thibaut Collet <thibaut.collet@6wind.com>
2015-10-09 23:17:32 +08:00
int vhost_net_notify_migration_done(VHostNetState *net, char* mac_addr);
Refactor virtio-net to use generic get_vhost_net This decouples virtio-net from the TAP netdev backend and allows support for other backends to be implemented. Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com> Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-05-27 20:05:08 +08:00
VHostNetState *get_vhost_net(NetClientState *nc);
vhost-user: add a new message to disable/enable a specific virt queue. Add a new message, VHOST_USER_SET_VRING_ENABLE, to enable or disable a specific virt queue, which is similar to attach/detach queue for tap device. virtio driver on guest doesn't have to use max virt queue pair, it could enable any number of virt queue ranging from 1 to max virt queue pair. Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Jason Wang <jasowang@redhat.com> Tested-by: Marcel Apfelbaum <marcel@redhat.com>
2015-09-23 12:20:01 +08:00
int vhost_set_vring_enable(NetClientState * nc, int enable);
vhost-net: save & restore vhost-user acked features The initial vhost-user connection sets the features to be negotiated with the driver. Renegotiation isn't possible without device reset. To handle reconnection of vhost-user backend, ensure the same set of features are provided, and reuse already acked features. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Reviewed-by: Victor Kaplansky <victork@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-06-07 00:45:05 +08:00
uint64_t vhost_net_get_acked_features(VHostNetState *net);
vhost-net: Notify the backend about the host MTU This patch provides a way for virtio-net to notify the backend about the host MTU set by the user. Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Aaron Conole <aconole@redhat.com> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-12-10 23:30:37 +08:00
int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu);
vhost: vhost net support This adds vhost net device support in qemu. Will be tied to tap device and virtio by following patches. Raw backend is currently missing, will be worked on/submitted separately. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-03-17 19:08:17 +08:00
#endif
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