Commit Graph

376 Commits

Author SHA1 Message Date
Sebastien Boeuf
b2e5dbaecb block_util, vmm: Add fixed VHD asynchronous implementation
This commit adds the asynchronous support for fixed VHD disk files.

It introduces FixedVhd as a new ImageType, moving the image type
detection to the block_util crate (instead of qcow crate).

It creates a new vhd module in the block_util crate in order to handle
VHD footer, following the VHD specification.

It creates a new fixed_vhd_async module in the block_util crate to
implement the asynchronous version of fixed VHD disk file. It relies on
io_uring.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-02-01 13:45:08 +00:00
dependabot-preview[bot]
1df952726a build(deps): bump libc from 0.2.83 to 0.2.84
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.83 to 0.2.84.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-29 06:21:38 +00:00
Bo Chen
6664e5a6e7 net_util, virtio-devices, vmm: Accept multiple TAP fds
This patch enables multi-queue support for creating virtio-net devices by
accepting multiple TAP fds, e.g. '--net fds=3:7'.

Fixes: #2164

Signed-off-by: Bo Chen <chen.bo@intel.com>
2021-01-28 09:11:39 +00:00
Rob Bradford
5db9b0ec99 net_util: Support supplying flags to open_tap() helper
This helper can open a TAP device and configure the interface on it. If
the device needs to be opened multiple times for MQ then it also handles
that correctly.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-28 09:11:39 +00:00
dependabot-preview[bot]
36360c7630 build(deps): bump libc from 0.2.82 to 0.2.83
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.82 to 0.2.83.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.82...0.2.83)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-28 06:30:03 +00:00
dependabot-preview[bot]
192d69d601 build(deps): bump log from 0.4.13 to 0.4.14
Bumps [log](https://github.com/rust-lang/log) from 0.4.13 to 0.4.14.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.13...0.4.14)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-27 12:48:52 +00:00
Sebastien Boeuf
2824642e80 virtio-devices: Rename BlockIoUring to Block
Now that BlockIoUring is the only implementation of virtio-block,
handling both synchronous and asynchronous backends based on the
AsyncIo trait, we can rename it to Block.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-22 16:10:34 +00:00
Sebastien Boeuf
41cfdb50cd virtio-devices: Remove virtio-block synchronous implementation
Now that both synchronous and asynchronous backends rely on the
asynchronous version of virtio-block (namely BlockIoUring), we can
get rid of the synchronous version (namely Block).

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-22 16:10:34 +00:00
Sebastien Boeuf
12e20effd7 block_util: Port synchronous QCOW file to AsyncIo trait
Based on the synchronous QCOW file implementation present in the qcow
crate, we created a new qcow_sync module in block_util that ports this
synchronous implementation to the AsyncIo trait.

The point is to reuse virtio-blk asynchronous implementation for both
synchronous and asynchronous backends.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-22 16:10:34 +00:00
Sebastien Boeuf
9fc86a91e2 block_util: Port synchronous RAW file to AsyncIo trait
Based on the synchronous RAW file implementation present in the qcow
crate, we created a new raw_sync module in block_util that ports this
synchronous implementation to the AsyncIo trait.

The point is to reuse virtio-blk asynchronous implementation for both
synchronous and asynchronous backends.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-22 16:10:34 +00:00
Sebastien Boeuf
da8ce25abf virtio-devices: Use asynchronous traits for virtio-blk io_uring
Based on the new DiskFile and AsyncIo traits, the implementation of
asynchronous block support does not have to be tied to io_uring anymore.
Instead, the only thing the virtio-blk implementation knows is that it
is using an asynchronous implementation of the underlying disk file.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-22 16:10:34 +00:00
Rob Bradford
c90f77e399 virtio-devices: Enforce a minimum number of queues
Even though the driver can provide fewer queues than those advertised
for some device types their is a minimum number that is required for
operation.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-20 18:54:36 +01:00
Rob Bradford
a105089702 virtio-devices: Support driver programming fewer queues
It is permissable for the driver to program fewer queues than offered by
the device. Filter the queues so that only the ready ones are included
and check that they have valid addresses configured.

Fixes: #2136

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-20 18:54:36 +01:00
Rob Bradford
c366efc19e virtio-devices: block, block_io_uring: Don't assume max queue count
Don't assume that the number of queues provided match the number of
queues offered. The virtio spec allows the driver to program fewer
queues.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-20 18:54:36 +01:00
Rob Bradford
23f9ec50fb virtio-devices: Simplify virtio device reset
Rather than having to give and return the ioeventfd used for a device
clone them each time. This will make it simpler when we start handling
the driver enabling fewer queues than advertised by the device.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-18 15:05:54 +00:00
Rob Bradford
22649c4a87 virtio-devices: Upon reset reap/join the device threads
We have killed the device thread by writing to the exit EventFd but we
should wait for them to quit to ensure consistency.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-14 17:25:14 +01:00
Rob Bradford
23afe89089 virtio-devices: Derive thread names from device ids
In order to make the thread naming more useful derive their name from
the device id (which can be supplied by the user) and a device specific
suffix that has details of the individual queue (or queue pair.)

e.g.

rob@artemis:~$ pstree -p -c -l -t `pidof cloud-hypervisor`
cloud-hyperviso(27501)─┬─{_console}(27525)
                       ├─{_disk0_q0}(27529)
                       ├─{_disk0_q1}(27532)
                       ├─{_net1_ctrl}(27533)
                       ├─{_net1_qp0}(27534)
                       ├─{_net1_qp1}(27535)
                       ├─{_rng}(27526)
                       ├─{http-server}(27504)
                       ├─{seccomp_signal_}(27502)
                       ├─{signal_handler}(27523)
                       ├─{vcpu0}(27520)
                       ├─{vcpu1}(27522)
                       └─{vmm}(27503)

Fixes: #2077

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-13 16:56:44 +01:00
dependabot-preview[bot]
d83c9a74f4 build(deps): bump tempfile from 3.1.0 to 3.2.0
Bumps [tempfile](https://github.com/Stebalien/tempfile) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/Stebalien/tempfile/releases)
- [Changelog](https://github.com/Stebalien/tempfile/blob/master/NEWS)
- [Commits](https://github.com/Stebalien/tempfile/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-12 08:21:47 +00:00
dependabot-preview[bot]
d26866e018 build(deps): bump libc from 0.2.81 to 0.2.82
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.81 to 0.2.82.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.81...0.2.82)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-12 07:06:21 +00:00
dependabot-preview[bot]
ab456affb3 build(deps): bump log from 0.4.11 to 0.4.13
Bumps [log](https://github.com/rust-lang/log) from 0.4.11 to 0.4.13.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.11...0.4.13)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2021-01-11 12:49:34 +00:00
Rob Bradford
bdfe6a69ef virtio-devices: iommu: Update to latest version of IOMMU spec
This is order to support the latest patches from
https://jpbrucker.net/git/linux/commit/?h=virtio-iommu/devel&id=ddc3e6ce3f534af827a9c8f91e12a7082de8ec61

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-11 12:56:05 +01:00
Rob Bradford
e0d79196c8 virtio-devices, vmm: Enhance debugging around virtio device activation
Sometimes when running under the CI tests fail due to a barrier not
being released and the guest blocks on an MMIO write. Add further
debugging to try and identify the issue.

See: #2118

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-08 14:06:44 +00:00
Sebastien Boeuf
f70852c04b virtio-devices: Update seccomp filters for virtio-net thread
On aarch64, the openat() syscall was missing from the seccomp filters
list, preventing the test_watchdog from running properly.

Fixes #2103

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-01-08 12:37:32 +00:00
Rob Bradford
315a730128 virtio-devices: net: Reduce debug level of EVENT_IDX messages
This logging is too spammy for info!() level and should be handled as
debug!() level

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-06 13:51:26 +01:00
Rob Bradford
fabd63072b misc: Remove unnecessary literal casts
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-04 13:46:37 +01:00
Rob Bradford
05cdef17f4 virtio-devices: mem, balloon: Use struct initialisation
error: field assignment outside of initializer for an instance created with Default::default()
   --> virtio-devices/src/mem.rs:496:9
    |
496 |         resp.resp_type = resp_type;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
note: consider initializing the variable with `mem::VirtioMemResp { resp_type: resp_type, ..Default::default() }` and removing relevant reassignments
   --> virtio-devices/src/mem.rs:495:9
    |
495 |         let mut resp = VirtioMemResp::default();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#field_reassign_with_default

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-04 13:46:37 +01:00
Rob Bradford
9f2e7f455f block_util, vhost_user_block: Avoid unnecessary literal cast
error: casting integer literal to `u64` is unnecessary
  --> block_util/src/lib.rs:35:30
   |
35 | pub const SECTOR_SIZE: u64 = (0x01 as u64) << SECTOR_SHIFT;
   |                              ^^^^^^^^^^^^^ help: try: `0x01_u64`
   |
   = note: `-D clippy::unnecessary-cast` implied by `-D warnings`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-01-04 13:46:37 +01:00
Rob Bradford
e8c72b1b01 virtio-devices: pci: Improve debugging for activation barriers
On the CI we are seeing issues with the activation barriers not being released:

cloud-hypervisor: 12.452434193s: INFO:vmm/src/vm.rs:413 -- Waiting for barrier
cloud-hypervisor: 12.452499794s: INFO:virtio-devices/src/block.rs:382 -- Changing cache mode to writeback
cloud-hypervisor: 12.452605195s: INFO:vmm/src/vm.rs:413 -- Waiting for barrier
cloud-hypervisor: 12.452684596s: INFO:virtio-devices/src/transport/pci_device.rs:671 -- Waiting for barrier
cloud-hypervisor: 12.452708196s: INFO:virtio-devices/src/transport/pci_device.rs:673 -- Barrier released
cloud-hypervisor: 12.452717596s: INFO:vmm/src/vm.rs:415 -- Barrier released

Add some debugging to try and identify the vause of this issue.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-18 16:05:14 +00:00
Rob Bradford
ca48f1c995 virtio-devices: net: Support creating a device from a TAP fd
Add support for creating virtio-net device from existing TAP fd.
Currently only a single fd and thus no-more than 2 queues (one pair) is
suppored.

Fixes: #2052

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-17 22:51:30 +01:00
Rob Bradford
03db48306b vmm: Activate virtio device from VMM thread
When a device is ready to be activated signal to the VMM thread via an
EventFd that there is a device to be activated. When the VMM receives a
notification on the EventFd that there is a device to be activated
notify the device manager to attempt to activate any devices that have
not been activated.

As a side effect the VMM thread will create the virtio device threads.

Fixes: #1863

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-17 11:23:53 +00:00
Rob Bradford
dee42ebb29 virtio-devices: pci_device: Split out device activation
This can then be used to activate the device from a separate thread.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-17 11:23:53 +00:00
Rob Bradford
7cc729c7d9 pci, virtio-devices: Extend barrier returning through PCI code
We need to be able to return the barrier from the code that prepares to
activate the virtio device. This triggered by a write to the
configuration fields stored in the PCI BAR. Since bars can be accessed
by both memory mapping and through PCI config I/O several prototypes
must be changed.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-17 11:23:53 +00:00
Rob Bradford
1fc6d50f3e misc: Make Bus::write() return an Option<Arc<Barrier>>
This can be uses to indicate to the caller that it should wait on the
barrier before returning as there is some asynchronous activity
triggered by the write which requires the KVM exit to block until it's
completed.

This is useful for having vCPU thread wait for the VMM thread to proceed
to activate the virtio devices.

See #1863

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-17 11:23:53 +00:00
dependabot-preview[bot]
b51f112629 build(deps): bump libc from 0.2.80 to 0.2.81
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.80 to 0.2.81.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.80...0.2.81)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-12-08 08:13:51 +00:00
Rob Bradford
ffaab46934 misc: Use a more relaxed memory model when possible
When a total ordering between multiple atomic variables is not required
then use Ordering::Acquire with atomic loads and Ordering::Release with
atomic stores.

This will improve performance as this does not require a memory fence
on x86_64 which Ordering::SeqCst will use.

Add a comment to the code in the vCPU handling code where it operates on
multiple atomics to explain why Ordering::SeqCst is required.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-12-02 19:04:30 +01:00
Samuel Ortiz
1fc0b94fcd cargo: Move to crates.io vm-memory 0.4.0
vm-memory 0.4.0 now contains all our fixes.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-23 10:55:13 +01:00
Samuel Ortiz
72bb255ff6 pci, virtio-devices: Fix rust 1.48 clippy warnings
Unnecessary closure used to substitute value for `Option::None`
See https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-20 17:09:28 +01:00
Rob Bradford
c0827e01b1 build: Update arc-swap dependency to 1.0.0
Also bump the vm-memory version to one that depends on arc-swap 1.0.0
too.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-16 14:10:09 +01:00
Rob Bradford
6d4656c68f virtio-devices: seccomp_filters: Add fsync to block io_uring filter
This is required when booting with hypervisor-fw.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-10-27 10:53:54 +00:00
dependabot-preview[bot]
f0d0d8ccaf build(deps): bump libc from 0.2.79 to 0.2.80
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.79 to 0.2.80.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.79...0.2.80)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-10-26 09:31:03 +00:00
Rob Bradford
d2c7645731 virtio-devices: Add simple virtio-watchdog device
This device operates a single virtq. When the driver offers a descriptor
to the device it is interpreted as a "ping" to indicate that the guest
is alive. A periodic timer fires and if when the timer is fired there
has not been a "ping" from the guest then the device will reset the VM.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-10-21 16:02:39 +01:00
Rob Bradford
cf86ca15c2 virtio-devices: vsock: Fix clippy issue in tests
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-10-19 21:53:38 -07:00
Rob Bradford
05c79119b9 virtio-devices: pci_common_config: Fix clippy issues in tests
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-10-19 21:53:38 -07:00
Sebastien Boeuf
cc8b553e86 virtio-devices: Remove mmio and pci differentiation
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-10-19 14:58:48 +01:00
Sebastien Boeuf
0c967e1aa0 virtio-devices: iommu: Update the list of seccomp filters
While using the virtio-iommu device involving L2 scenario, and tearing
things down all the way from L2 back to L0 exposed some bad syscalls
that were not part of the authorized list.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-10-14 19:15:09 +02:00
Sebastien Boeuf
30e1162d7c virtio: Replace some repr(C, packed) with repr(C)
The goal here is to replace anywhere possible a virtio structure
with a "C, packed" representation by a "C" representation. Some
virtio structures are not expected to be packed, therefore there's
no reason for using the more restrictive "C, packed" representation.

This is important since "packed" representation can still cause
undefined behaviors with Rust 2018.

By removing the need for "packed" representation, we can simplify a
bit of code by deriving the Serialize trait without writing the
implementation ourselves.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-10-07 22:11:36 +02:00
Sebastien Boeuf
1e3a6cb450 vmm: Simplify some of the io_uring code
Small patch creating a dedicated `block_io_uring_is_supported()`
function for the non-io_uring case, so that we can simplify the
code in the DeviceManager.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-10-07 14:26:49 +02:00
dependabot-preview[bot]
c2cc26fc82 build(deps): bump libc from 0.2.78 to 0.2.79
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.78 to 0.2.79.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.78...0.2.79)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-10-05 07:02:05 +00:00
Rob Bradford
6a9934d933 build: Fix vm-memory bump build error
A new version of vm-memory was released upstream which resulted in some
components pulling in that new version. Update the version number used
to point to the latest version but continue to use our patched version
due to the fix for #1258

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-10-02 16:38:02 +01:00
Hui Zhu
c75f8b2f89 virtio-balloon: Add memory_actual_size to vm.info to show memory actual size
The virtio-balloon change the memory size is asynchronous.
VirtioBalloonConfig.actual of balloon device show current balloon size.

This commit add memory_actual_size to vm.info to show memory actual size.

Signed-off-by: Hui Zhu <teawater@antfin.com>
2020-10-01 17:46:30 +02:00
dependabot-preview[bot]
76c3230e08 build(deps): bump libc from 0.2.77 to 0.2.78
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.77 to 0.2.78.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.77...0.2.78)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-10-01 05:40:02 +00:00
Hui Zhu
d03a48162f balloon.rs: BalloonEpollHandler: Fix wrong error in handle_event
error!("Unknown event for virtio-mem");
This error should be
error!("Unknown event for virtio-balloon");

Signed-off-by: Hui Zhu <teawater@antfin.com>
2020-09-25 08:36:23 +02:00
Josh Soref
5c3f4dbe6f ch: Fix various misspelled words
Misspellings were identified by https://github.com/marketplace/actions/check-spelling
* Initial corrections suggested by Google Sheets
* Additional corrections by Google Chrome auto-suggest
* Some manual corrections

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
2020-09-23 08:59:31 +01:00
Sebastien Boeuf
46d972e402 virtio-devices: mem: Add missing syscall to seccomp filters
The missing syscall rt_sigprocmask(2) was triggered for the musl build
upon rebooting the VM, and was causing the VM to be killed.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 19:20:04 +02:00
Hui Zhu
33a1e37c35 virtio-devices: mem: Allow for an initial size
This commit gives the possibility to create a virtio-mem device with
some memory already plugged into it. This is preliminary work to be
able to reboot a VM with the virtio-mem region being already resized.

Signed-off-by: Hui Zhu <teawater@antfin.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 19:20:04 +02:00
Sebastien Boeuf
1798ed8194 vmm: virtio-mem: Enforce alignment and size requirements
The virtio-mem driver is generating some warnings regarding both size
and alignment of the virtio-mem region if not based on 128MiB:

The alignment of the physical start address can make some memory
unusable.
The alignment of the physical end address can make some memory
unusable.

For these reasons, the current patch enforces virtio-mem regions to be
128MiB aligned and checks the size provided by the user is a multiple of
128MiB.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 19:20:04 +02:00
Sebastien Boeuf
dcedd4cded virtio-devices: virtio-mem: Add NUMA support
Implement support for associating a virtio-mem device with a specific
guest NUMA node, based on the ACPI proximity domain identifier.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 19:20:04 +02:00
Sebastien Boeuf
bc1bbb6dc4 virtio-devices: virtio-mem: Add missing syscalls
By testing manually the memory resizing through virtio-mem, several
missing syscalls have been identified.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 19:20:04 +02:00
Rob Bradford
c03dbe8cc7 virtio-devices: block: Support multiple data descriptors
The Windows virtio block driver puts multiple data descriptors between
the header and the status footer. To handle this when parsing iterate
over the descriptor chain until the end is reached accumulating the
address and length pairs in a vector. For execution iterate over the
vector and make sequential reads from the disk for each data descriptor.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-09-16 16:13:24 +02:00
Rob Bradford
bd463324f3 build: Move to rust-vmm vhost crate
There is no need to point at our forked version any longer.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-11 13:43:57 +02:00
Bo Chen
b4f6db5f31 virtio-devices: vsock: Add 'brk' to the seccomp list
We observed CI instability for the past couple of days. This
instability is confirmed to be a result of incomplete seccomp
filters. Given the filter on 'virtio_vsock' is recently added and
is missing 'brk', it is likely to be the root cause of the
instability.

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-09-11 07:56:52 +02:00
Rob Bradford
15025d71b1 devices, vm-device: Move BusDevice and Bus into vm-device
This removes the dependency of the pci crate on the devices crate which
now only contains the device implementations themselves.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-10 09:35:38 +01:00
dependabot-preview[bot]
f24a12913a build(deps): bump libc from 0.2.76 to 0.2.77
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.76 to 0.2.77.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.76...0.2.77)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-09-10 06:45:09 +00:00
Bo Chen
3c923f0727 virtio-devices: seccomp: Add seccomp filters for virtio_vsock thread
This patch enables the seccomp filters for the virtio_vsock worker
thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-09-09 17:04:39 +01:00
Bo Chen
1175fa2bc7 virtio-devices: seccomp: Add seccomp filters for blk_io_uring thread
This patch enables the seccomp filters for the block_io_uring worker
thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-09-09 17:04:39 +01:00
Rob Bradford
42de27b215 virtio-devices: Remove virtio_pausable! macros
These are no longer needed as virtio device pausing is handledby
VirtioCommon.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-07 17:39:30 +02:00
Rob Bradford
a641f8930f virtio-devices: virtio-vsock: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-07 17:39:30 +02:00
Rob Bradford
12f90569e2 virtio-devices: vhost-user-net: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-07 17:39:30 +02:00
Rob Bradford
d33a1a5313 virtio-devices: vhost-user-fs: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-07 17:39:30 +02:00
Rob Bradford
1e4b612d39 virtio-devices: vhost-user-block: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-07 17:39:30 +02:00
Rob Bradford
c37fb5b602 virtio-devices: rng: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
d5d0b8566b virtio-devices: pmem: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
30f4f2b9ab virtio-devices: net: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
df8a55ab11 virtio-devices: mem: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
376babb21e virtio-devices: iommu: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
f6b75c683f virtio-devices: console: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
360d6702b6 virtio-devices: block_io_uring: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
3c6fd5634d virtio-devices: balloon: Port to VirtioCommon
Use VirtioCommon to handle activate() preparation, reset() and Pausable.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
3487524950 virtio-device: block, common: Split out common code
Split the block device implementation into code that be used in common
between multiple different virtio device implementations.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
a9a138460b virtio-devices: Use Default::default() for transitioning to VirtioCommon
In order to simplify the transition to VirtioCommon and to avoid needing
to set empty fields derive Default for VirtioCommon.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
008cf4a5ae virtio-devices: block: Rearrange activate() to match other devices
Rearrange the code to match other devices which makes it easier to prep
for sharing this between other devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
56f03db69c virtio-devices: net: Simplify activate function
Move the if-let for the taps later which makes the earlier activation
code identical to other devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
31d7712878 virtio-devices: block: Remove duplicated block
The same block of code seems to copied twice into the block activation
function.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-05 10:06:39 +01:00
Rob Bradford
4bb00224b4 virtio-devices: balloon: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
dc9f1e4cdf virtio-devices: block_io_uring: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
e3abcdbff8 virtio-devices: console: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
9fc8b6d242 virtio-devices: iommu: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
d63dcae233 virtio-devices: mem: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
47c165e08a virtio-devices: net: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
84b4aef87a virtio-devices: pmem: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
37e99bbbb0 virtio-devices: rng: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
edb7ac5922 virtio-devices: vhost-user-block: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
8c42dd3811 virtio-devices: vhost-user-fs: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
9d0ebf8d25 virtio-devices: vhost-user-net: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
684b47013a virtio-devices: vsock: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
be945b3bc8 virtio-devices: block: Port to VirtioCommon for feature handling
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Rob Bradford
081c897989 virtio-devices: Introduce VirtioCommon for shared functionality
Introduce VirtioCommon to help remove duplicated functionality and state
between implementations of VirtioDevice. Initially it is only handling
feature acknowledgement and testing.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-09-03 17:00:32 +02:00
Michael Zhao
23e5a726ec virtio-devices: Add seccomp rules for vhost-user backend
The missing rules caused failures when guest powered off.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
2020-08-31 08:19:23 +02:00
Sebastien Boeuf
871138d5cc vm-migration: Make snapshot() mutable
There will be some cases where the implementation of the snapshot()
function from the Snapshottable trait will require to modify some
internal data, therefore we make this possible by updating the trait
definition with snapshot(&mut self).

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-25 16:43:10 +02:00
dependabot-preview[bot]
57ff608be9 build(deps): bump libc from 0.2.74 to 0.2.76
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.74 to 0.2.76.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.74...0.2.76)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-08-21 07:08:35 +00:00
Michael Zhao
cd0b8ed8f8 virtio-devices: Allowing SYS_write syscall for virtio-net-ctl thread
"debug!" marco is used in virtio-devices/src/epoll_helper.rs. When"-vvv"
and "--log-file" option was specified, the missing "SYS_write" rule
caused a "bad system call" crash.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
2020-08-19 14:26:07 +02:00
Bo Chen
02d87833f0 virtio-devices: seccomp: Add seccomp filters for vhost_blk thread
This patch enables the seccomp filters for the vhost_blk worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
4e0ea15075 virtio-devices: seccomp: Add seccomp filter for vhost_net thread
This patch enables the seccomp filters for the vhost_net worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
896b9a1d4b virtio-devices: seccomp: Add seccomp filter for vhost_net_ctl thread
This patch enables the seccomp filters for the vhost_net_ctl worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
02d63149fe virtio-devices: seccomp: Add seccomp filters for vhost_fs thread
This patch enables the seccomp filters for the vhost_fs worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
c82ded8afa virtio-devices: seccomp: Add seccomp filters for balloon thread
This patch enables the seccomp filters for the balloon worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
c460178723 virtio-devices: seccomp: Add seccomp filters for mem thread
This patch enables the seccomp filters for the mem worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-19 08:33:58 +02:00
Bo Chen
de3b17d948 virtio-devices: Print out worker thread errors
As we never join the spawned virtio-devices worker threads, the error
returned from each worker thread is lost. For now, we simply print out
the error from each worker thread.

Fixes: #1551

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-18 07:57:11 +02:00
Bo Chen
aaa02a0d78 virtio-devices: seccomp: Add 'brk' syscall to all worker threads
To prevent potential failures, this patch adds 'brk' syscall to all
virtio-devices worker threads.

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
c90a71e329 virtio-devices: seccomp: Add 'brk' syscall to the rng thread
From the experiments of running integration tests on my local machine,
auditd occationally reported the 'brk' syscall is needed for the
'virtio-rng' worker thread.

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
c70ad27247 virtio-devices: Add seccomp filter list for net worker thread
This patch adds the seccomp filter list for the virtio_net thread, while
the list was already added for the virtio_net_ctl thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
3d6d9ca4de virtio-devices: Print out error message from the net worker thread
Partially fixes: #1551

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
1bf7817c40 virtio-devices: seccomp: Distinguish viritio-net-ctl from virtio-net
The current seccomp filter for virtio-net is actually for the worker
thread 'virtio_net_ctl' (not the actual worker thread
'virtio_net'). This patch introduces changes to distinguish those two
worker threads and seccomp filters.

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
4539236690 virtio-devices: seccomp: Add seccomp filters for iommu thread
This patch enables the seccomp filters for the iommu worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Bo Chen
dc6c62af09 virtio-devices: Print out error message from the iommu worker thread
Partially fixes: #1551

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-17 21:08:49 +02:00
Rob Bradford
6b40f2dbc5 virtio-devices: vsock: Fix clippy error
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-13 16:09:24 +02:00
Sebastien Boeuf
aa57762c4f virtio-devices: Acknowledge a device being paused
Using the Rust Barrier mechanism, this patch forces each virtio device
to acknowledge they've been correctly paused before going further.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-13 14:52:18 +02:00
Sebastien Boeuf
fca46fd00e virtio-devices: net: Add dup syscall to seccomp filters
The seccomp filters specific to the virtio-net threads must contain
dup() syscall now that we ported the epoll code to the EpollHelper.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-12 17:34:02 +02:00
Sebastien Boeuf
a502cb282e virtio-devices: net_ctrlq: Port to EpollHelper
Migrate virtio-net and vhost-user-net control queue to EpollHelper so
as to remove code duplication.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-12 17:34:02 +02:00
Sebastien Boeuf
821cf3add9 virtio-devices: vhost-user: Port to EpollHelper
Migrate all vhost-user devices to EpollHelper so as to remove code that
is duplicated between multiple virtio devices.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-12 14:39:54 +02:00
Sebastien Boeuf
8fbc4b4004 virtio-devices: vsock: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-12 10:07:57 +01:00
Sebastien Boeuf
01e7bd7276 virtio-devices: Make EpollHandler more generic
Instead of passing only the event type through the handle_event()
callback, we make the trait slightly more generic by providing the
epoll event to each virtio device implementation.

This is particularly useful for vsock as it will need the event set.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-12 10:07:57 +01:00
Sebastien Boeuf
e7ed037351 virtio-devices: balloon: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-11 19:58:10 +01:00
Sebastien Boeuf
e8f0bdb6f2 virtio-devices: console: Add dup syscall to seccomp filters
The seccomp filters specific to the virtio-console thread must contain
dup syscall now that we ported the epoll code to the EpollHelper.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-11 19:17:50 +02:00
Sebastien Boeuf
d9992b5b5f virtio-devices: console: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-11 19:17:50 +02:00
Sebastien Boeuf
05c6136790 io-uring: Move to the crates.io 0.4.0 version
Now that io-uring crate has been stabilized, let's move to the latest
release 0.4.0 from crates.io.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-10 08:40:51 +01:00
Rob Bradford
66efe3cf53 virtio-devices: mem: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-10 08:46:35 +02:00
dependabot-preview[bot]
7529a9ac05 build(deps): bump seccomp from v0.21.2 to v0.22.0
Bumps [seccomp](https://github.com/firecracker-microvm/firecracker) from v0.21.2 to v0.22.0.
- [Release notes](https://github.com/firecracker-microvm/firecracker/releases)
- [Changelog](cc5387637c/CHANGELOG.md)
- [Commits](a06d358b2e...cc5387637c)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-08-06 07:25:30 +00:00
Rob Bradford
b5d64be479 virtio-devices: iommu: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-05 13:15:23 +02:00
Rob Bradford
55c16fecbf virtio-devices: seccomp: Add missing dup() syscalls
The refactoring to use EpollHelper added a requirement on this system
call.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-05 11:32:31 +02:00
Rob Bradford
0e335a709d virtio-devices: Print out worker error messages
Currently any messages generated during the worker thread are not
shown anywhere as the thread is never join()ed on. Instead output the
error immediately.

For now only cover the subset where the work to port to EpollHandler
clashed with the seccomp filtering for virtio devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-05 11:32:31 +02:00
dependabot-preview[bot]
ec9de259ba build(deps): bump seccomp from v0.21.1 to v0.21.2
Bumps [seccomp](https://github.com/firecracker-microvm/firecracker) from v0.21.1 to v0.21.2.
- [Release notes](https://github.com/firecracker-microvm/firecracker/releases)
- [Changelog](a06d358b2e/CHANGELOG.md)
- [Commits](047a379eb0...a06d358b2e)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-08-05 07:34:44 +00:00
Bo Chen
dc71d2765a virtio-devices: seccomp: Add seccomp filters for pmem thread
This patch enables the seccomp filters for the pmem worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-05 08:13:31 +01:00
Bo Chen
d77977536d virtio-devices: seccomp: Add seccomp filters for net thread
This patch enables the seccomp filters for the net worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-05 08:13:31 +01:00
Bo Chen
276df6b71c virtio-devices: seccomp: Add seccomp filters for console thread
This patch enables the seccomp filters for the console worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-05 08:13:31 +01:00
Bo Chen
a426221167 virtio-devices: seccomp: Add seccomp filters for rng thread
This patch enables the seccomp filters for the rng worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-05 08:13:31 +01:00
Bo Chen
6a26789222 virtio-devices: seccomp: Fix typos in the block module
Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-05 08:13:31 +01:00
Rob Bradford
ce65093f8d virtio-devices: pmem: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-05 08:43:01 +02:00
Rob Bradford
e093f0e83e virtio-devices: rng: Port to EpollHelper
Migrate to EpollHelper so as to remove code that is duplicated between
multiple virtio devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-08-05 08:42:06 +02:00
Bo Chen
704edd544c virtio-devices: seccomp: Add seccomp_filter module
This patch added the seccomp_filter module to the virtio-devices crate
by taking reference code from the vmm crate. This patch also adds
allowed-list for the virtio-block worker thread.

Partially fixes: #925

Signed-off-by: Bo Chen <chen.bo@intel.com>
2020-08-04 11:40:49 +02:00
Sebastien Boeuf
8f0bf82648 io_uring: Add new feature gate
By adding a new io_uring feature gate, we let the user the possibility
to choose if he wants to enable the io_uring improvements or not.
Since the io_uring feature depends on the availability on recent host
kernels, it's better if we leave it off for now.

As soon as our CI will have support for a kernel 5.6 with all the
features needed from io_uring, we'll enable this feature gate
permanently.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-03 14:15:01 +01:00
Sebastien Boeuf
a85304196e virtio-devices: Improve error handling for virtio-blk io_uring
Instead of just logging error messages but continue the processing of
the queues, this patch returns errors right away. This allows for a
quicker detection of an error happening on the virtqueue.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-03 14:15:01 +01:00
Sebastien Boeuf
64283726e7 virtio-devices: Add an asynchronous virtio-blk device
This introduces a new version of virtio-blk device. The default
virtio-blk provides synchronous processing of the queues, while this
new version relies on io_uring from the host kernel to provide an
asynchronous processing of the queues.

This new asynchronous version provides a huge performance improvement
compared to the default synchronous version.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-03 14:15:01 +01:00
dependabot-preview[bot]
12c5b7668a build(deps): bump libc from 0.2.73 to 0.2.74
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.73 to 0.2.74.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.73...0.2.74)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-07-28 20:46:37 +00:00
Rob Bradford
56bfe2700d virtio-devices, net_util: Migrate virtio-net to EpollHelper
EpollHelper allows the removal of much duplicated loop handling code and
instead the device specific even handling is delegated via an
implementation of EpollHelperHandler.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-24 13:50:37 +02:00
Rob Bradford
d66fa942be virtio-devices: Implement AsRawFd for EpollHelper
This is required for implementing virtio-net as the epoll RawFd must be
assigned into the NetQueuePair.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-24 13:50:37 +02:00
Rob Bradford
1dcf1b11e4 virtio-devices: Reserve first 16 events for the EpollHelper
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-24 13:50:37 +02:00
Rob Bradford
5cad2334dd virtio-block: Port to EpollHelper
Port virtio-block device to the new EpollHelper. This required moving
the queue EventFd ownership to BlockEpollHandler.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-23 13:10:34 +01:00
Rob Bradford
7d9dc4013e virtio-devices: Introduce EpollHelper
This is a helper for implementing the worker thread for virtio devices
and in particular handles special behaviour for pause and kill events.

The device specific event handling (for the queues themselves) is
delegated to a method invoked on a new EpollHelperHandler trait. This
method is passed the event as well as the EpollHelper so that it can
operate on the handler in order to manage events itself (required for
virtio-net.)

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-23 13:10:34 +01:00
dependabot-preview[bot]
12b37ef13b build(deps): bump libc from 0.2.72 to 0.2.73
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.72 to 0.2.73.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.72...0.2.73)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-07-20 05:15:24 +00:00
Rob Bradford
dfd6f3471d virtio-devices: vhost_user: block: Only change mutable field in write_config()
The only driver writable field in the virtio-block specification is the
writeback one. Check that the offset being written to is for that field
and update it.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
eabcd618ba virtio-devices: block: Only change mutable field in write_config()
The only driver writable field in the virtio-block specification is the
writeback one. Check that the offset being written to is for that field
and update it.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
751a302050 virtio-devices: Port devices over to new read_config_from_slice() helper
Using this helper removes lots of duplicated code across the devices.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
d262540857 virtio-devices: Introduce helper for implementing read_config()
Add a helper function to share code between implementations that can use
a slice accessible data structure for configuration data.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
5d67338b29 virtio-devices: Remove warning generating read_config() implementation
The version in VirtioDevice can be used instead.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
676322c3cc virtio-devices: vsock: Remove write_config() implementation
This warning generating implementation can be handled by the version in
VirtioDevice.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
580739f776 virtio-devices: vhost_user: fs: Remove write_config() implementation
All the configuration fields for virtio-fs are read only for the driver.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
15d5cc62ff virtio-devices: vhost_user: net: Remove write_config implementation
The spec specifies that all fields are read-only from the driver.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
f1e940df8d virtio-devices: net: Remove write_config implementation
The spec specifies that all fields are read-only from the driver.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
e3dc620146 virtio-devices: Remove write_config implementations
Remove the write_config() implementations that only generate a warning
as that is now done at the VirtioDevice level.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
Rob Bradford
6ba1c4318e virtio-devices: Add default implementations for {read,write}_config
Not every virtio device has any config fields that can be read and most
have none that can be written to.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-16 13:17:22 +02:00
dependabot-preview[bot]
cc57467d10 build(deps): bump log from 0.4.8 to 0.4.11
Bumps [log](https://github.com/rust-lang/log) from 0.4.8 to 0.4.11.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.8...0.4.11)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-07-16 05:33:44 +00:00
Rob Bradford
9c867edc35 vhost_user_block, virtio-devices, block_util: Extract common block code
Extract the code that is used by vhost_user_block from the
virtio-devices crate to remove the dependencies on unrequired
functionality such as the virtio transports.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-15 10:17:11 +01:00
Michael Zhao
cce6237536 pci: Enable GSI routing (MSI type) for AArch64
In this commit we saved the BDF of a PCI device and set it to "devid"
in GSI routing entry, because this field is mandatory for GICv3-ITS.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
2020-07-14 14:34:54 +01:00
Hui Zhu
165568e98b virtio-mem: Update VirtioMemConfig according to Linux kernel
Types of block_size and padding is updated in
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=544fc7dbbf920a3e64d109c416ee229e8e1763c5.
Update VirtioMemConfig according to it.

Signed-off-by: Hui Zhu <teawater@antfin.com>
2020-07-13 12:19:24 +02:00
Sebastien Boeuf
3cc8ca4ea5 virtio-devices: Update virtio-iommu to follow 5.8-rc4 kernel
The virtio configuration structures have been slightly modified between
5.6-rc4 and 5.8-rc4, forcing the virtio-iommu device to be updated
accordingly.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-07-13 12:19:24 +02:00
Rob Bradford
4963e37dc8 qcow, virtio-devices: Break cyclic dependency
Move the definition of RawFile from virtio-devices crate into qcow
crate. All the code that consumes RawFile also already depends on the
qcow crate for image file type detection so this change breaks the
need for the qcow crate to depend on the very large virtio-devices
crate.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-10 17:47:31 +02:00
Rob Bradford
17766fcea4 net_util, vhost_user_net, virtio-devices: Move NetQueuePair
Move NetQueuePair and the related NetCounters into the net_util crate.
This means that the vhost_user_net crate now no longer depends on
virtio-devices and so does not depend on the pci, qcow or other similar
crates. This significantly simplifies the build chain for this backend.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
Rob Bradford
1237784a8f net_util, virtio-devices: Move TAP register/unregister helpers
Move these helper functions into net_util so that they can be used from
code inside there.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
Rob Bradford
48faf3abac net_util, virtio-devices, vhost_user_net: Relocate {Rx,Tx}Virtio
By moving the code for opening the two RX and TX queues into a shared
location we are starting to remove the requirement for the
vhost-user-net backend to depend on the virtio-devices crate which in of
itself depends on many other crates that are not necessary for the
backend to function.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
Rob Bradford
3e807a19b7 net_util, virtio-devices, vhost_user_net: Relocate code for opening TAP
By moving the code for opening the TAP device into a shared location we
are starting to remove the requirement for the vhost-user-net backend to
depend on the virtio-devices crate which in of itself depends on many
other crates that are not necessary for the backend to function.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-08 16:11:50 +01:00
dependabot-preview[bot]
861337cc6f build(deps): bump libc from 0.2.71 to 0.2.72
Bumps [libc](https://github.com/rust-lang/libc) from 0.2.71 to 0.2.72.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](https://github.com/rust-lang/libc/compare/0.2.71...0.2.72)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-07-08 05:11:25 +00:00
Hui Zhu
800220acbb virtio-balloon: Store the balloon size to support reboot
This commit store balloon size to MemoryConfig.
After reboot, virtio-balloon can use this size to inflate back to
the size before reboot.

Signed-off-by: Hui Zhu <teawater@antfin.com>
2020-07-07 17:25:13 +01:00
Sebastien Boeuf
50da100afd virtio-devices: Fix virtio-balloon device
The implementation of the virtio-balloon was slightly wrong as it was
generating the GPA (Guest Physical Address) from the PFN (Page Frame
Number) which was a u32. That means the GPA was created as a u32, and
later a cast was done to extend it to a u64 type. Unfortunately, by
doing so, the GPA was wrong if the value was supposedly more than 32
bits.

That's why the PFN is casted into a u64 before the GPA is generated,
which creates the GPA on 64 bits directly.

Additionally, this patch simplifies the process_queue() function,
relying on multiple vm-memory helpers.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-07-07 17:25:13 +01:00
Hui Zhu
0d72aa782f virtio-devices: Add virtio-balloon device
Add virtio-balloon device.
It only supports the basic functions of the virtio-balloon.

Signed-off-by: Hui Zhu <teawater@antfin.com>
2020-07-07 17:25:13 +01:00
Rob Bradford
2a6eb31d5b vm-virtio, virtio-devices: Split device implementation from virt queues
Split the generic virtio code (queues and device type) from the
VirtioDevice trait, transport and device implementations.

This also simplifies the feature handling in vhost_user_backend as the
vm-virtio crate is no longer has any features.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-07-02 17:09:28 +01:00