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: 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:
virtio-net: Avoid indirection_table_mask overflow
Fix calculation of minimum in colo_compare_tcp
net: Check if nc is NULL in qemu_get_vnet_hdr_len()
net/tap-win32: Fix gcc 14 format truncation errors
chardev: finalize 'reconnect' deprecation
net/stream: deprecate 'reconnect' in favor of 'reconnect-ms'
hw/net: improve tracing of eBPF RSS setup
ebpf: improve trace event coverage to all key operations
hw/net: report errors from failing to use eBPF RSS FDs
ebpf: add formal error reporting to all APIs
ebpf: improve error trace events
ebpf: drop redundant parameter checks in static methods
hw/net: fix typo s/epbf/ebpf/ in virtio-net
net: fix build when libbpf is disabled, but libxdp is enabled

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

show more ...

net/stream: deprecate 'reconnect' in favor of 'reconnect-ms'

Do the same thing we already did for chardev in c8e2b6b4d7e, and
introduce a new 'reconnect-ms' option to make it possible to specify
sub

net/stream: deprecate 'reconnect' in favor of 'reconnect-ms'

Do the same thing we already did for chardev in c8e2b6b4d7e, and
introduce a new 'reconnect-ms' option to make it possible to specify
sub-second timeouts. This also changes the related documentaion and
tests to use reconnect-ms as well.

Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

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Merge tag 'pull-request-2024-01-11' of https://gitlab.com/thuth/qemu into staging

* Fix non-deterministic failures of the 'netdev-socket' qtest
* Fix device presence checking in the virtio-ccw qtest

Merge tag 'pull-request-2024-01-11' of https://gitlab.com/thuth/qemu into staging

* Fix non-deterministic failures of the 'netdev-socket' qtest
* Fix device presence checking in the virtio-ccw qtest
* Support codespell checking in checkpatch.pl
* Fix emulation of LAE s390x instruction
* Work around htags bug when environment is large
* Some other small clean-ups here and there

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# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2024-01-11' of https://gitlab.com/thuth/qemu:
.gitlab-ci.d/buildtest.yml: Work around htags bug when environment is large
tests/tcg/s390x: Test LOAD ADDRESS EXTENDED
target/s390x: Fix LAE setting a wrong access register
scripts/checkpatch: Support codespell checking
hw/s390x/ccw: Replace dirname() with g_path_get_dirname()
hw/s390x/ccw: Replace basename() with g_path_get_basename()
target/s390x/kvm/pv: Provide some more useful information if decryption fails
gitlab: fix s390x tag for avocado-system-centos
tests/qtest/virtio-ccw: Fix device presence checking
qtest: ensure netdev-socket tests have non-overlapping names
net: handle QIOTask completion to report useful error message
net: add explicit info about connecting/listening state
Revert "tests/qtest/netdev-socket: Raise connection timeout to 120 seconds"
Revert "osdep: add getloadavg"
Revert "netdev: set timeout depending on loadavg"
qtest: use correct boolean type for failover property
q800: move dp8393x_prom memory region to Q800MachineState

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

show more ...

net: handle QIOTask completion to report useful error message

The network stream backend uses the async QIO socket APIs for listening
and connecting sockets. It does not check the task object comple

net: handle QIOTask completion to report useful error message

The network stream backend uses the async QIO socket APIs for listening
and connecting sockets. It does not check the task object completion
status, however, instead just looking at whether the socket FD is -1
or not.

By checking the task completion, we can set a useful error message for
users instead of the non-actionable "connection error" string.

eg so users will see:

(qemu) info network
net: index=0,type=stream,error: Failed to connect to '/foo.unix': No such file or directory

Signed-off-by: "Daniel P. Berrangé" <berrange@redhat.com>
Message-ID: <20240104162942.211458-6-berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

show more ...

net: add explicit info about connecting/listening state

When running 'info network', if the stream backend is still in
the process of connecting, or waiting for an incoming connection,
no informatio

net: add explicit info about connecting/listening state

When running 'info network', if the stream backend is still in
the process of connecting, or waiting for an incoming connection,
no information is displayed.

There is also no way to distinguish whether the server is still
in the process of setting up the listener socket, or whether it
is ready to accept incoming client connections.

This leads to a race condition in the netdev-socket qtest which
launches a server process followed by a client process. Under
high load conditions it is possible for the client to attempt
to connect before the server is accepting clients. For the
scenarios which do not set the 'reconnect' option, this opens
up a race which can lead to the test scenario failing to reach
the expected state.

Now that 'info network' can distinguish between initialization
phase and the listening phase, the netdev-socket qtest will
correctly synchronize, such that the client QEMU is not spawned
until the server is ready.

This should solve the non-deterministic failures seen with the
netdev-socket qtest.

Signed-off-by: "Daniel P. Berrangé" <berrange@redhat.com>
Message-ID: <20240104162942.211458-5-berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Thomas Huth <thuth@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 17 Feb 2023 05:37:28 GMT
# 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:
vdpa: fix VHOST_BACKEND_F_IOTLB_ASID flag check
net: stream: add a new option to automatically reconnect
vmnet: stop recieving events when VM is stopped
net: Increase L2TPv3 buffer to fit jumboframes
hw/net/vmxnet3: allow VMXNET3_MAX_MTU itself as a value
hw/net/lan9118: log [read|write]b when mode_16bit is enabled rather than abort
net: Replace "Supported NIC models" with "Available NIC models"
net: Restore printing of the help text with "-nic help"
net: Move the code to collect available NIC models to a separate function

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

show more ...

net: stream: add a new option to automatically reconnect

In stream mode, if the server shuts down there is currently
no way to reconnect the client to a new server without removing
the NIC device an

net: stream: add a new option to automatically reconnect

In stream mode, if the server shuts down there is currently
no way to reconnect the client to a new server without removing
the NIC device and the netdev backend (or to reboot).

This patch introduces a reconnect option that specifies a delay
to try to reconnect with the same parameters.

Add a new test in qtest to test the reconnect option and the
connect/disconnect events.

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

show more ...

Add G_GNUC_PRINTF to function qemu_set_info_str and fix related issues

With the G_GNUC_PRINTF function attribute the compiler detects
two potential insecure format strings:

../../../net/stream.c:24

Add G_GNUC_PRINTF to function qemu_set_info_str and fix related issues

With the G_GNUC_PRINTF function attribute the compiler detects
two potential insecure format strings:

../../../net/stream.c:248:31: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
qemu_set_info_str(&s->nc, uri);
^~~
../../../net/stream.c:322:31: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
qemu_set_info_str(&s->nc, uri);
^~~

There are also two other warnings:

../../../net/socket.c:182:35: warning: zero-length gnu_printf format string [-Wformat-zero-length]
182 | qemu_set_info_str(&s->nc, "");
| ^~
../../../net/stream.c:170:35: warning: zero-length gnu_printf format string [-Wformat-zero-length]
170 | qemu_set_info_str(&s->nc, "");

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221126152507.283271-7-sw@weilnetz.de>

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 28 Oct 2022 01:29:25 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: (26 commits)
net: stream: add QAPI events to report connection state
net: stream: move to QIO to enable additional parameters
qemu-sockets: update socket_uri() and socket_parse() to be consistent
qemu-sockets: move and rename SocketAddress_to_str()
net: dgram: add unix socket
net: dgram: move mcast specific code from net_socket_fd_init_dgram()
net: dgram: make dgram_dst generic
net: stream: add unix socket
net: stream: Don't ignore EINVAL on netdev socket connection
net: socket: Don't ignore EINVAL on netdev socket connection
qapi: net: add stream and dgram netdevs
net: introduce qemu_set_info_str() function
qapi: net: introduce a way to bypass qemu_opts_parse_noisily()
net: simplify net_client_parse() error management
net: remove the @errp argument of net_client_inits()
net: introduce convert_host_port()
vhost: Accept event idx flag
vhost: use avail event idx on vhost_svq_kick
vhost: toggle device callbacks using used event idx
vhost: allocate event_idx fields on vring
...

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

show more ...

net: stream: add QAPI events to report connection state

The netdev reports NETDEV_STREAM_CONNECTED event when the backend
is connected, and NETDEV_STREAM_DISCONNECTED when it is disconnected.

The N

net: stream: add QAPI events to report connection state

The netdev reports NETDEV_STREAM_CONNECTED event when the backend
is connected, and NETDEV_STREAM_DISCONNECTED when it is disconnected.

The NETDEV_STREAM_CONNECTED event includes the destination address.

This allows a system manager like libvirt to detect when the server
fails.

For instance with passt:

{ 'execute': 'qmp_capabilities' }
{ "return": { } }
{ "timestamp": { "seconds": 1666341395, "microseconds": 505347 },
"event": "NETDEV_STREAM_CONNECTED",
"data": { "netdev-id": "netdev0",
"addr": { "path": "/tmp/passt_1.socket", "type": "unix" } } }

[killing passt here]

{ "timestamp": { "seconds": 1666341430, "microseconds": 968694 },
"event": "NETDEV_STREAM_DISCONNECTED",
"data": { "netdev-id": "netdev0" } }

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

net: stream: move to QIO to enable additional parameters

Use QIOChannel, QIOChannelSocket and QIONetListener.
This allows net/stream to use all the available parameters provided by
SocketAddress.

S

net: stream: move to QIO to enable additional parameters

Use QIOChannel, QIOChannelSocket and QIONetListener.
This allows net/stream to use all the available parameters provided by
SocketAddress.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

net: stream: add unix socket

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Markus Armbru

net: stream: add unix socket

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com> (QAPI schema)
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

net: stream: Don't ignore EINVAL on netdev socket connection

Other errors are treated as failure by net_stream_client_init(),
but if connect() returns EINVAL, we'll fail silently. Remove the
related

net: stream: Don't ignore EINVAL on netdev socket connection

Other errors are treated as failure by net_stream_client_init(),
but if connect() returns EINVAL, we'll fail silently. Remove the
related exception.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
[lvivier: applied to net/stream.c]
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

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qapi: net: add stream and dgram netdevs

Copied from socket netdev file and modified to use SocketAddress
to be able to introduce new features like unix socket.

"udp" and "mcast" are squashed into d

qapi: net: add stream and dgram netdevs

Copied from socket netdev file and modified to use SocketAddress
to be able to introduce new features like unix socket.

"udp" and "mcast" are squashed into dgram netdev, multicast is detected
according to the IP address type.
"listen" and "connect" modes are managed by stream netdev. An optional
parameter "server" defines the mode (off by default)

The two new types need to be parsed the modern way with -netdev, because
with the traditional way, the "type" field of netdev structure collides with
the "type" field of SocketAddress and prevents the correct evaluation of the
command line option. Moreover the traditional way doesn't allow to use
the same type (SocketAddress) several times with the -netdev option
(needed to specify "local" and "remote" addresses).

The previous commit paved the way for parsing the modern way, but
omitted one detail: how to pick modern vs. traditional, in
netdev_is_modern().

We want to pick based on the value of parameter "type". But how to
extract it from the option argument?

Parsing the option argument, either the modern or the traditional way,
extracts it for us, but only if parsing succeeds.

If parsing fails, there is no good option. No matter which parser we
pick, it'll be the wrong one for some arguments, and the error
reporting will be confusing.

Fortunately, the traditional parser accepts *anything* when called in
a certain way. This maximizes our chance to extract the value of
"type", and in turn minimizes the risk of confusing error reporting.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...