vhost-vdpa: allow passing opened vhostfd to vhost-vdpa

Similar to other vhost backends, vhostfd can be passed to vhost-vdpa
backend as another parameter to instantiate vhost-vdpa net client.
This wo

vhost-vdpa: allow passing opened vhostfd to vhost-vdpa

Similar to other vhost backends, vhostfd can be passed to vhost-vdpa
backend as another parameter to instantiate vhost-vdpa net client.
This would benefit the use case where only open file descriptors, as
opposed to raw vhost-vdpa device paths, are accessible from the QEMU
process.

(qemu) netdev_add type=vhost-vdpa,vhostfd=61,id=vhost-vdpa1

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Remove shadow CVQ command check

The guest will see undefined behavior if it issue not negotiate
commands, bit it is expected somehow.

Simplify code deleting this check.

Signed-off-by: Eugeni

vdpa: Remove shadow CVQ command check

The guest will see undefined behavior if it issue not negotiate
commands, bit it is expected somehow.

Simplify code deleting this check.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Delete duplicated vdpa_feature_bits entry

This entry was duplicated on referenced commit. Removing it.

Fixes: 402378407dbd ("vhost-vdpa: multiqueue support")
Signed-off-by: Eugenio Pérez <epe

vdpa: Delete duplicated vdpa_feature_bits entry

This entry was duplicated on referenced commit. Removing it.

Fixes: 402378407dbd ("vhost-vdpa: multiqueue support")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
virtio: del net client if net_init_tap_one failed
vdpa: Allow MQ feature in SVQ
virtio-net: Update virtio-net curr_queue_pairs in vdpa backends
vdpa: validate MQ CVQ commands
vdpa: Add vhost_vdpa_net_load_mq
vdpa: extract vhost_vdpa_net_load_mac from vhost_vdpa_net_load
vdpa: Make VhostVDPAState cvq_cmd_in_buffer control ack type
e1000e: set RX desc status with DD flag in a separate operation

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

vdpa: Allow MQ feature in SVQ

Finally enable SVQ with MQ feature.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

vdpa: validate MQ CVQ commands

So we are sure we can update the device model properly before sending to
the device.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jas

vdpa: validate MQ CVQ commands

So we are sure we can update the device model properly before sending to
the device.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Add vhost_vdpa_net_load_mq

Same way as with the MAC, restore the expected number of queues at
device's start.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jas

vdpa: Add vhost_vdpa_net_load_mq

Same way as with the MAC, restore the expected number of queues at
device's start.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: extract vhost_vdpa_net_load_mac from vhost_vdpa_net_load

Since there may be many commands we need to issue to load the NIC
state, let's split them in individual functions

Signed-off-by: Eugen

vdpa: extract vhost_vdpa_net_load_mac from vhost_vdpa_net_load

Since there may be many commands we need to issue to load the NIC
state, let's split them in individual functions

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Make VhostVDPAState cvq_cmd_in_buffer control ack type

This allows to simplify the code. Rename to status while we're at it.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by:

vdpa: Make VhostVDPAState cvq_cmd_in_buffer control ack type

This allows to simplify the code. Rename to status while we're at it.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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# gpg: Signature made Fri 02 Sep 2022 02:30:35 EDT
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [full]
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu: (21 commits)
net: tulip: Restrict DMA engine to memories
net/colo.c: Fix the pointer issue reported by Coverity.
vdpa: Delete CVQ migration blocker
vdpa: Add virtio-net mac address via CVQ at start
vhost_net: add NetClientState->load() callback
vdpa: extract vhost_vdpa_net_cvq_add from vhost_vdpa_net_handle_ctrl_avail
vdpa: Move command buffers map to start of net device
vdpa: add net_vhost_vdpa_cvq_info NetClientInfo
vhost_net: Add NetClientInfo stop callback
vhost_net: Add NetClientInfo start callback
vhost: Do not depend on !NULL VirtQueueElement on vhost_svq_flush
vhost: Delete useless read memory barrier
vhost: use SVQ element ndescs instead of opaque data for desc validation
vhost: stop transfer elem ownership in vhost_handle_guest_kick
vdpa: Use ring hwaddr at vhost_vdpa_svq_unmap_ring
vhost: Always store new kick fd on vhost_svq_set_svq_kick_fd
vdpa: Make SVQ vring unmapping return void
vdpa: Remove SVQ vring from iova_tree at shutdown
util: accept iova_tree_remove_parameter by value
vdpa: do not save failed dma maps in SVQ iova tree
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

vdpa: Delete CVQ migration blocker

We can restore the device state in the destination via CVQ now. Remove
the migration blocker.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason W

vdpa: Delete CVQ migration blocker

We can restore the device state in the destination via CVQ now. Remove
the migration blocker.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Add virtio-net mac address via CVQ at start

This is needed so the destination vdpa device see the same state a the
guest set in the source.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>

vdpa: Add virtio-net mac address via CVQ at start

This is needed so the destination vdpa device see the same state a the
guest set in the source.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: extract vhost_vdpa_net_cvq_add from vhost_vdpa_net_handle_ctrl_avail

So we can reuse it to inject state messages.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jaso

vdpa: extract vhost_vdpa_net_cvq_add from vhost_vdpa_net_handle_ctrl_avail

So we can reuse it to inject state messages.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
--
v7:
* Remove double free error

v6:
* Do not assume in buffer sent to the device is sizeof(virtio_net_ctrl_ack)

v5:
* Do not use an artificial !NULL VirtQueueElement
* Use only out size instead of iovec dev_buffers for these functions.

Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Move command buffers map to start of net device

As this series will reuse them to restore the device state at the end of
a migration (or a device start), let's allocate only once at the device

vdpa: Move command buffers map to start of net device

As this series will reuse them to restore the device state at the end of
a migration (or a device start), let's allocate only once at the device
start so we don't duplicate their map and unmap.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: add net_vhost_vdpa_cvq_info NetClientInfo

Next patches will add a new info callback to restore NIC status through
CVQ. Since only the CVQ vhost device is needed, create it with a new
NetClient

vdpa: add net_vhost_vdpa_cvq_info NetClientInfo

Next patches will add a new info callback to restore NIC status through
CVQ. Since only the CVQ vhost device is needed, create it with a new
NetClientInfo.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

util: accept iova_tree_remove_parameter by value

It's convenient to call iova_tree_remove from a map returned from
iova_tree_find or iova_tree_find_iova. With the current code this is not
possible,

util: accept iova_tree_remove_parameter by value

It's convenient to call iova_tree_remove from a map returned from
iova_tree_find or iova_tree_find_iova. With the current code this is not
possible, since we will free it, and then we will try to search for it
again.

Fix it making accepting the map by value, forcing a copy of the
argument. Not applying a fixes tag, since there is no use like that at
the moment.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge tag 'trivial-branch-for-7.1-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

Pull request trivial branch 20220804

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Merge tag 'trivial-branch-for-7.1-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

Pull request trivial branch 20220804

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# gpg: Signature made Thu 04 Aug 2022 12:21:35 PM PDT
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [undefined]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C

* tag 'trivial-branch-for-7.1-pull-request' of https://gitlab.com/laurent_vivier/qemu:
include/qemu/host-utils.h: Simplify the compiler check in mulu128()
ppc: Remove redundant macro MSR_BOOK3S_MASK.
docs/about/removed-features: Move the -soundhw into the right section
vdpa: Fix file descriptor leak on get features error
README.rst: fix link formatting

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

vdpa: Fix file descriptor leak on get features error

File descriptor vdpa_device_fd is not free in the case of returning
error from vhost_vdpa_get_features. Fixing it by making all errors go to
the

vdpa: Fix file descriptor leak on get features error

File descriptor vdpa_device_fd is not free in the case of returning
error from vhost_vdpa_get_features. Fixing it by making all errors go to
the same error path.

Resolves: Coverity CID 1490785
Fixes: 8170ab3f43 ("vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs")

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20220802112447.249436-2-eperezma@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...

Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

# gpg: Signature made Wed 20 Jul 2022 09:58:47 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good sign

Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

# gpg: Signature made Wed 20 Jul 2022 09:58:47 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu: (25 commits)
net/colo.c: fix segmentation fault when packet is not parsed correctly
net/colo.c: No need to track conn_list for filter-rewriter
net/colo: Fix a "double free" crash to clear the conn_list
softmmu/runstate.c: add RunStateTransition support form COLO to PRELAUNCH
vdpa: Add x-svq to NetdevVhostVDPAOptions
vdpa: Add device migration blocker
vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs
vdpa: Buffer CVQ support on shadow virtqueue
vdpa: manual forward CVQ buffers
vhost-net-vdpa: add stubs for when no virtio-net device is present
vdpa: Export vhost_vdpa_dma_map and unmap calls
vhost: Add svq avail_handler callback
vhost: add vhost_svq_poll
vhost: Expose vhost_svq_add
vhost: add vhost_svq_push_elem
vhost: Track number of descs in SVQDescState
vhost: Add SVQDescState
vhost: Decouple vhost_svq_add from VirtQueueElement
vhost: Check for queue full at vhost_svq_add
vhost: Move vhost_svq_kick call to vhost_svq_add
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

vdpa: Add x-svq to NetdevVhostVDPAOptions

Finally offering the possibility to enable SVQ from the command line.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Markus Armbruster <armbr

vdpa: Add x-svq to NetdevVhostVDPAOptions

Finally offering the possibility to enable SVQ from the command line.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs

To know the device features is needed for CVQ SVQ, so SVQ knows if it
can handle all commands or not. Extract from
vhost_vdpa_get_

vdpa: Extract get features part from vhost_vdpa_get_max_queue_pairs

To know the device features is needed for CVQ SVQ, so SVQ knows if it
can handle all commands or not. Extract from
vhost_vdpa_get_max_queue_pairs so we can reuse it.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: Buffer CVQ support on shadow virtqueue

Introduce the control virtqueue support for vDPA shadow virtqueue. This
is needed for advanced networking features like rx filtering.

Virtio-net control

vdpa: Buffer CVQ support on shadow virtqueue

Introduce the control virtqueue support for vDPA shadow virtqueue. This
is needed for advanced networking features like rx filtering.

Virtio-net control VQ copies the descriptors to qemu's VA, so we avoid
TOCTOU with the guest's or device's memory every time there is a device
model change. Otherwise, the guest could change the memory content in
the time between qemu and the device read it.

To demonstrate command handling, VIRTIO_NET_F_CTRL_MACADDR is
implemented. If the virtio-net driver changes MAC the virtio-net device
model will be updated with the new one, and a rx filtering change event
will be raised.

More cvq commands could be added here straightforwardly but they have
not been tested.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

vdpa: manual forward CVQ buffers

Do a simple forwarding of CVQ buffers, the same work SVQ could do but
through callbacks. No functional change intended.

Signed-off-by: Eugenio Pérez <eperezma@redha

vdpa: manual forward CVQ buffers

Do a simple forwarding of CVQ buffers, the same work SVQ could do but
through callbacks. No functional change intended.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: fixes,cleanups,features

most of CXL support
fixes, cleanups all over the place

Signed-off-by:

Merge tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: fixes,cleanups,features

most of CXL support
fixes, cleanups all over the place

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg: Signature made Mon 16 May 2022 01:48:50 PM PDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg: issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [undefined]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of git://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (86 commits)
vhost-user-scsi: avoid unlink(NULL) with fd passing
virtio-net: don't handle mq request in userspace handler for vhost-vdpa
vhost-vdpa: change name and polarity for vhost_vdpa_one_time_request()
vhost-vdpa: backend feature should set only once
vhost-net: fix improper cleanup in vhost_net_start
vhost-vdpa: fix improper cleanup in net_init_vhost_vdpa
virtio-net: align ctrl_vq index for non-mq guest for vhost_vdpa
virtio-net: setup vhost_dev and notifiers for cvq only when feature is negotiated
hw/i386/amd_iommu: Fix IOMMU event log encoding errors
hw/i386: Make pic a property of common x86 base machine type
hw/i386: Make pit a property of common x86 base machine type
include/hw/pci/pcie_host: Correct PCIE_MMCFG_SIZE_MAX
include/hw/pci/pcie_host: Correct PCIE_MMCFG_BUS_MASK
docs/vhost-user: Clarifications for VHOST_USER_ADD/REM_MEM_REG
vhost-user: more master/slave things
virtio: add vhost support for virtio devices
virtio: drop name parameter for virtio_init()
virtio/vhost-user: dynamically assign VhostUserHostNotifiers
hw/virtio/vhost-user: don't suppress F_CONFIG when supported
include/hw: start documenting the vhost API
...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

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vhost-vdpa: fix improper cleanup in net_init_vhost_vdpa

... such that no memory leaks on dangling net clients in case of
error.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Jason Wan

vhost-vdpa: fix improper cleanup in net_init_vhost_vdpa

... such that no memory leaks on dangling net clients in case of
error.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <1651890498-24478-4-git-send-email-si-wei.liu@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...