Commit Graph

67709 Commits

Author SHA1 Message Date
Emanuele Giuseppe Esposito
86dc943f6e qos-test: ac97 test node
Convert tests/ac97-test to a driver node; currently it runs
the PCI nop test only, therefore we're not placing it in tests/libqos.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:46 +01:00
Paolo Bonzini
19e3d9795c tests: move virtio entirely to qos-test
The only remaining test that needs libqos-virtio-obj-y is drive_del-test,
which really only needs a function.  Move that function to the test
and remove libqos-virtio-obj-y.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:45 +01:00
Paolo Bonzini
6e68204646 tests/libqos: remove pre-qgraph QVirtioPCIDevice API
Remove the qvirtio_pci_device_find* and qvirtio_pci_device_free
APIs, now that they do not have any users.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:45 +01:00
Emanuele Giuseppe Esposito
4e20079869 qos-test: virtio-scsi test node
Convert tests/virtio-scsi-test in qgraph test node,
virtio-scsi-test. This test consumes a virtio-scsi interface
and checks that its function return the expected values.

Some functions are implemented only for virtio-scsi-pci, so they
don't consume virtio-scsi, but virtio-scsi-pci

Note that this test does not allocate any virtio-scsi structure,
it's all done by the qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Emanuele Giuseppe Esposito
8f41a3a822 tests/libqos: virtio-scsi driver and interface nodes
Add qgraph nodes for virtio-scsi-pci and virtio-scsi-device.
Both nodes produce virtio-scsi, but virtio-scsi-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and its functions,
while virtio-scsi-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Paolo Bonzini
a3ebd6e00a qos-test: vhost-user test node
Convert tests/virtio-net-test in qgraph test node,
virtio-net-test. This test consumes a virtio-net interface
and checks that its function return the expected values.

Note that this test does not allocate any virtio-net structure,
it's all done by the qtest walking graph mechanism.  Nevertheless,
vhost-user-test is a bit more complex than the other tests, because
it requires more complicated setup of back-ends and thus almost each
test has a slightly different opts.before function.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Paolo Bonzini
0f9fe58009 vhost-user-test: always use 256 MiB of guest memory
Some tests are using a small amount of RAM for the guest (2 MiB) in order to
save host memory, others are using 512 MiB.

However, pSeries machines only support multiples of 256 MiB.  Using 256
MiB of memory does not use more host memory than now, even for the
migration test that starts two guests, and it allows running the test on
pSeries too.

This of course is not optimal, it would be nice to let the qgraph machine object
judge how much memory to provide.  This is left for future work, together
with a more generic framework that wraps the QEMU command line.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Paolo Bonzini
6bd4a6d4b8 tests/libqos: support multiqueue for virtio-net
Initialize the additional virtqueues if they are supported.
This is needed to switch vhost-user-test's multiqueue test
to the virtio-net qgraph.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Emanuele Giuseppe Esposito
6ae333f91b qos-test: virtio-net test node
Convert tests/virtio-net-test in qgraph test node,
virtio-net-test. This test consumes a virtio-net interface
and checks that its function return the expected values.

Some functions are implemented only for virtio-net-pci, so they
don't consume virtio-net, but virtio-net-pci

Note that this test does not allocate any virtio-net structure,
it's all done by the qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Emanuele Giuseppe Esposito
583349d1ef tests/libqos: virtio-net driver and interface nodes
Add qgraph nodes for virtio-net-pci and virtio-net-device.
Both nodes produce virtio-net, but virtio-net-pci receives
a pci-bus and overrides virtio-pci QOSGraphObject and its functions,
while virtio-net-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:42 +01:00
Paolo Bonzini
5cb8f0db0a qos-test: virtio-blk test node
Convert tests/virtio-blk-test in qgraph test node,
virtio-blk-test. This test consumes a virtio-blk interface
and checks that its function return the expected values.

Some functions are implemented only for virtio-blk-pci, so they
don't consume virtio-blk, but virtio-blk-pci

Note that this test does not allocate any virtio-blk structure,
it's all done by the qtest walking graph mechanism.  The allocator
is also provided by qgraph; remove malloc-generic.c and malloc-generic.h
which are not used anymore.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:41 +01:00
Emanuele Giuseppe Esposito
a371349303 tests/libqos: virtio-blk driver and interface nodes
Add qgraph nodes for virtio-blk-pci and virtio-blk-device.
Both nodes produce virtio-blk, but virtio-blk-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-blk-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
a25f56aebe qos-test: virtio-rng test node
Convert tests/virtio-rng-test in qgraph test node,
virtio-rng-test. This test consumes a virtio-rng interface
and checks that its function return the expected values.

Some functions are implemented only for virtio-rng-pci, so they
don't consume virtio-rng, but virtio-rng-pci

Note that this test does not allocate any virtio-rng structure,
it's all done by the qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
d3d400d3df tests/libqos: virtio-rng driver and interface nodes
Add qgraph nodes for virtio-rng-pci and virtio-rng-device.
Both nodes produce virtio-rng, but virtio-rng-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-rng-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
6975bf399a tests/qgraph: remove virtio-balloon-test
The tests/virtio-balloon-test is covered by generic virtio tests,
so remove it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
292410679b tests/libqos: virtio-balloon driver and interface nodes
Add qgraph nodes for virtio-balloon-pci and virtio-balloon-device.
Both nodes produce virtio-balloon, but virtio-balloon-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-balloon-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
dfbe8b4303 qos-test: virtio-9p test node
Convert tests/virtio-9p-test into a qgraph test node.
This test consumes a virtio-9p interface and checks that its functions
return the expected values.

Note that this test does not allocate any virtio-9p structure,
it's all done by the qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
9d44725793 tests/libqos: virtio-9p driver and interface nodes
Add qgraph nodes for virtio-9p-pci and virtio-9p-device.
Both nodes produce virtio-9p, but virtio-9p-pci receives
a pci-bus and overrides virtio-pci QOSGraphObject and its functions,
while virtio-9p-device receives a virtio and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
1657291afd qos-test: virtio-console and virtio-serial test node
Convert tests/virtio-console-test and tests/virtio-serial-test
in qgraph test node. This test consumes a virtio-serial interface
and checks that its function return the expected values.

Note that this test does not allocate any virtio-console or
virtio-serial structure, it's all done by the qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Emanuele Giuseppe Esposito
b3e7dc8771 tests/libqos: virtio-serial driver and interface nodes
Add qgraph nodes for virtio-serial-pci and virtio-serial-device.
Both nodes produce virtio-serial, but virtio-serial-pci receives
a pci-bus and uses virtio-pci QOSGraphObject and functions,
while virtio-serial-device receives a virtio-bus and implements
its own functions

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:27 +01:00
Paolo Bonzini
50d982e790 tests/qgraph: add generic virtio testcases
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
d18d2b57e7 tests/libqos: arm/virt machine node
Add arm/virt machine to the graph. This machine contains virtio-mmio, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
57ed038ad9 tests/libqos: virtio-mmio driver and interface nodes
Add virtio-mmio node in qgraph framework.
virtio-mmio produces virtio-bus, the interface consumed by all virtio-*-device
nodes.

Being a memory-mapped device, it doesn't have to provide a constructor
to qgraph, since it's always "contained" inside some other nodes.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Paolo Bonzini
d5006a45f5 tests/libqos: remove global_qtest from virtio endianness checks
This is needed to support migration tests with qgraph.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
1ce66ecec0 tests/libqos: virtio-pci driver and interface nodes
Add QOSGraphObject to QVirtioPCIDevice structure, with a basic
constructor. virtio-pci is not present in qgraph, since it
will be used as starting point by its subclasses (virtio-*-pci)

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
b026393c34 qos-test: e1000e test node
Convert tests/e1000e-test in qgraph test node, e1000e-test. This test
consumes an e1000e interface and checks that its function return the
expected values.

Note that this test does not allocate any e1000e structure, it's all done by the
qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
a4cc719b6b tests/libqos: e1000e driver and interface nodes
Add qgraph nodes for virtio-e1000e.
It consumes a pci-bus, and it's directly used by tests
(e1000e is pci based).

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
92bbafc718 tests/libqos: has_buggy_msi flag
The Qgraph framework makes any test using
pci bus run the same function using pci-pci and
pci-spapr bus. However, some tests are not ready to use
the spapr bus, due to a MSI bug. Until it does not get
fixed, this flag allows them to skip the test

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
7985b582d6 tests/qgraph: ppc64/pseries machine node
Add pseries  machine for the ppc64 QEMU binary. This machine contains a
spapr-pci-host-bridge driver, that contains itself a pci-bus-spapr
that produces the pci-bus interface.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:26 +01:00
Emanuele Giuseppe Esposito
b8782d2a47 tests/libqos: pci-spapr driver and interface nodes
Add pci-bus-spapr node, that produces pci-bus. Move QPCIBusSPAPR struct
declaration in its header (since it will be needed by other drivers)
and introduce a setter method for drivers that do not need to allocate
but have to initialize QPCIBusSPAPR.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Paolo Bonzini
db1f266838 tests/qgraph: add generic PCI testcases
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
757c6eac8e qos-test: sdhci test node
Convert tests/sdhci-test in first qgraph test node, sdhci-test. This test
consumes an sdhci interface and checks that its function return the
expected values.

Note that this test does not allocate any sdhci structure, it's all done by the
qtest walking graph mechanism

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
555299cb56 tests/libqos: aarch64/xlnx-zcu102 machine node
Add xlnx-zcu102 machine to the graph. This machine contains generic-sdhci, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
2013199d44 tests/libqos: arm/xilinx-zynq-a9 machine node
Add xilinx-zynq-a9 machine to the graph. This machine contains generic-sdhci, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
aea9ac5172 tests/libqos: arm/sabrelite machine node
Add arm/sabrelite machine to the graph. This machine contains generic-sdhci, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
c9599c9a60 tests/libqos: arm/smdkc210 machine node
Add arm/smdkc210 machine machine to the graph. This machine contains generic-sdhci, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
ad60d6d4ac tests/libqos: arm/raspi2 machine node
Add arm/raspi2 machine to the graph. This machine contains a generic-sdhci, so
its constructor must take care of setting it properly when called.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
a0a9ba66f6 tests/libqos: sdhci driver and interface nodes
Add qgraph nodes for sdhci-pci and generic-sdhci (memory mapped) drivers.
Both drivers implement (produce) the same interface sdhci, that provides the
readw - readq - writeq functions.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
46113f88e6 tests/libqos: x86_64/pc machine node
Add pc machine for the x86_64 QEMU binary. This machine contains an i440FX-pcihost
driver, that contains itself a pci-bus-pc that produces the pci-bus interface.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:25 +01:00
Emanuele Giuseppe Esposito
85af0057e7 tests/libqos: pci-pc driver and interface nodes
Add pci-bus-pc node, move QPCIBusPC struct declaration in its header
(since it will be needed by other drivers) and introduce a setter method
for drivers that do not need to allocate but have to initialize QPCIBusPC.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:24 +01:00
Emanuele Giuseppe Esposito
fc281c8020 tests: qgraph API for the qtest driver framework
Add qgraph API that allows to add/remove nodes and edges from the graph,
implementation of Depth First Search to discover the paths and basic unit
test to check correctness of the API.
Included also a main executable that takes care of starting the framework,
create the nodes, set the available drivers/machines, discover the path and
run tests.

graph.h provides the public API to manage the graph nodes/edges
graph_extra.h provides a more private API used successively by the gtest integration part
qos-test.c provides the main executable

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
[Paolo's changes compared to the Google Summer of Code submission:
 * added subprocess to test options
 * refactored object creation to support live migration tests
 * removed driver .before callback (unused)
 * removed test .after callbacks (replaced by GTest destruction queue)]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:24 +01:00
Paolo Bonzini
eb5937bad6 tests/libqos: embed allocators instead of malloc-ing them separately
qgraph will embed these objects instead of allocating them in a separate
object.  Expose a new API "generic_alloc_init" and "generic_alloc_destroy"
for that, and rename the existing API with s/init/new/ and s/uninit/free/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 17:28:07 +01:00
Emanuele Giuseppe Esposito
143e6db6fa tests/libqos: rename qpci_init_pc and qpci_init_spapr functions
Rename qpci_init_pc in qpci_pc_new and qpci_init_spapr in qpci_spapr_new,
since these function actually allocate a new pci struct and initialize it
(compare to object_new and object_initialize).
Changed QOSOps field name from qpci_init to qpci_new.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 16:50:04 +01:00
Emanuele Giuseppe Esposito
34c977489d tests/libqos: introduce virtio_start_device
This function is intended to group all the qvirtio_* functions that
start the qvirtio devices.
Applied in all tests using this combination of functions.

Signed-off-by: Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 16:50:04 +01:00
Paolo Bonzini
5b774fe550 chardev-socket: do not blindly reset handlers when switching GMainContext
If the socket is connecting or connected, tcp_chr_update_read_handler will
be called but it should not set the NetListener's callbacks again.
Otherwise, tcp_chr_accept is invoked while the socket is in connected
state and you get an assertion failure.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-07 16:50:04 +01:00
Peter Maydell
3a75ef6a0f usb: mtp fixes, guest-reset switch for usb-host.
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Merge remote-tracking branch 'remotes/kraxel/tags/usb-20190307-pull-request' into staging

usb: mtp fixes, guest-reset switch for usb-host.

# gpg: Signature made Thu 07 Mar 2019 09:53:55 GMT
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20190307-pull-request:
  Introduce new "no_guest_reset" parameter for usb-host device
  usb-mtp: prevent null dereference while deleting objects
  usb-mtp: fix some usb_mtp_write_data return paths
  usb-mtp: return incomplete transfer on a lstat failure

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-07 14:06:42 +00:00
Alexander Kappner
ba4c735b4f Introduce new "no_guest_reset" parameter for usb-host device
With certain USB devices passed through via usb-host, a guest attempting to
reset a usb-host device can trigger a reset loop that renders the USB device
unusable. In my use case, the device was an iPhone XR that was passed through to
a Mac OS X Mojave guest. Upon connecting the device, the following happens:

1) Guest recognizes new device, sends reset to emulated USB host
2) QEMU's USB host sends reset to host kernel
3) Host kernel resets device
4) After reset, host kernel determines that some part of the device descriptor
has changed ("device firmware changed" in dmesg), so host kernel decides to
re-enumerate the device.
5) Re-enumeration causes QEMU to disconnect and reconnect the device in the
guest.
6) goto 1)

Here's from the host kernel (note the "device firmware changed" lines")

[3677704.473050] usb 1-1.3: new high-speed USB device number 53 using ehci-pci
[3677704.555594] usb 1-1.3: New USB device found, idVendor=05ac, idProduct=12a8, bcdDevice=11.08
[3677704.555599] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[3677704.555602] usb 1-1.3: Product: iPhone
[3677704.555605] usb 1-1.3: Manufacturer: Apple Inc.
[3677704.555607] usb 1-1.3: SerialNumber: [[removed]]
[3677709.401040] usb 1-1.3: reset high-speed USB device number 53 using ehci-pci
[3677709.479486] usb 1-1.3: device firmware changed
[3677709.479842] usb 1-1.3: USB disconnect, device number 53
[3677709.546039] usb 1-1.3: new high-speed USB device number 54 using ehci-pci
[3677709.627471] usb 1-1.3: New USB device found, idVendor=05ac, idProduct=12a8, bcdDevice=11.08
[3677709.627476] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[3677709.627479] usb 1-1.3: Product: iPhone
[3677709.627481] usb 1-1.3: Manufacturer: Apple Inc.
[3677709.627483] usb 1-1.3: SerialNumber: [[removed]]
[3677762.320044] usb 1-1.3: reset high-speed USB device number 54 using ehci-pci
[3677762.615630] usb 1-1.3: USB disconnect, device number 54
[3677762.787043] usb 1-1.3: new high-speed USB device number 55 using ehci-pci
[3677762.869016] usb 1-1.3: New USB device found, idVendor=05ac, idProduct=12a8, bcdDevice=11.08
[3677762.869024] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[3677762.869028] usb 1-1.3: Product: iPhone
[3677762.869032] usb 1-1.3: Manufacturer: Apple Inc.
[3677762.869035] usb 1-1.3: SerialNumber: [[removed]]
[3677815.662036] usb 1-1.3: reset high-speed USB device number 55 using ehci-pci

Here's from QEMU:

libusb: error [_get_usbfs_fd] libusb couldn't open USB device /dev/bus/usb/005/022: No such file or directory
libusb: error [udev_hotplug_event] ignoring udev action bind
libusb: error [udev_hotplug_event] ignoring udev action bind
libusb: error [_open_sysfs_attr] open /sys/bus/usb/devices/5-1/bConfigurationValue failed ret=-1 errno=2
libusb: error [_get_usbfs_fd] File doesn't exist, wait 10 ms and try again

libusb: error [_get_usbfs_fd] libusb couldn't open USB device /dev/bus/usb/005/024: No such file or directory
libusb: error [udev_hotplug_event] ignoring udev action bind
libusb: error [udev_hotplug_event] ignoring udev action bind
libusb: error [_open_sysfs_attr] open /sys/bus/usb/devices/5-1/bConfigurationValue failed ret=-1 errno=2
libusb: error [_get_usbfs_fd] File doesn't exist, wait 10 ms and try again

libusb: error [_get_usbfs_fd] libusb couldn't open USB device /dev/bus/usb/005/026: No such file or directory

The result of this is that the device remains permanently unusable in the guest.
The same problem has been previously reported for an iPad:
https://stackoverflow.com/questions/52617634/how-do-i-get-qemu-usb-passthrough-to-work-for-ipad-iphone

This problem can be elegantly solved by interrupting step 2) above. Instead of
passing through the reset, QEMU simply ignores it. To allow this to be
configured on a per-device level,  a new parameter "no_guest_reset" is
introduced for the usb-host device. I can confirm that the configuration
described above (iPhone XS + Mojave guest) works flawlessly with
no_guest_reset=True specified.

Working command line for my scenario:
device_add usb-host,vendorid=0x05ac,productid=0x12a8,no_guest_reset=True,id=iphone

Best regards
Alexander

Signed-off-by: Alexander Kappner <agk@godking.net>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20190128140027.9448-1-kraxel@redhat.com

[ kraxel: rename parameter to "guest-reset" ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-07 10:03:54 +01:00
Bandan Das
7ddf837465 usb-mtp: prevent null dereference while deleting objects
Spotted by Coverity: CID 1399144

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 20190306210409.14842-4-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-07 10:02:48 +01:00
Bandan Das
298ac63c44 usb-mtp: fix some usb_mtp_write_data return paths
During a write, free up the "path" before getting more data.
Also, while we at it, remove the confusing usage of d->fd for
storing mkdir status

Spotted by Coverity: CID 1398642

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 20190306210409.14842-3-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-07 10:02:48 +01:00
Bandan Das
c5ead51f90 usb-mtp: return incomplete transfer on a lstat failure
MTP writes objects in small chunks and at the end gets the
real file size to update the object metadata. If this fails for
any reason, return an INCOMPLETE_TRANSFER to the initiator

Spotted by Coverity: CID 1398651

Signed-off-by: Bandan Das <bsd@redhat.com>
Message-id: 20190306210409.14842-2-bsd@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2019-03-07 10:02:48 +01:00