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

# -----BEGIN PGP SIGNATURE-----
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# YhEm/wf/cYA7i3asK

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

# -----BEGIN PGP SIGNATURE-----
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# iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmcglKYACgkQ7wSWWzmN
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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 29 Oct 2024 07:54:14 GMT
# gpg: using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# 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:
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 ...

ebpf: improve trace event coverage to all key operations

The existing error trace event is renamed to have a name prefix
matching its source file & to remove the redundant first arg that
adds no use

ebpf: improve trace event coverage to all key operations

The existing error trace event is renamed to have a name prefix
matching its source file & to remove the redundant first arg that
adds no useful information.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

ebpf: add formal error reporting to all APIs

The eBPF code is currently reporting error messages through trace
events. Trace events are fine for debugging, but they are not to be
considered the prim

ebpf: add formal error reporting to all APIs

The eBPF code is currently reporting error messages through trace
events. Trace events are fine for debugging, but they are not to be
considered the primary error reporting mechanism, as their output
is inaccessible to callers.

This adds an "Error **errp" parameter to all methods which have
important error scenarios to report to the caller.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

ebpf: improve error trace events

A design pattern of

trace_foo_error("descriptive string")

is undesirable because it does not allow for filtering trace events
based on the error scenario. Split

ebpf: improve error trace events

A design pattern of

trace_foo_error("descriptive string")

is undesirable because it does not allow for filtering trace events
based on the error scenario. Split eBPF error trace event into three
separate events to address this filtering need.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

ebpf: drop redundant parameter checks in static methods

Various static methods have checks on their parameters which were
already checked immediately before the method was invoked. Drop
these redund

ebpf: drop redundant parameter checks in static methods

Various static methods have checks on their parameters which were
already checked immediately before the method was invoked. Drop
these redundat checks to simplify the following commit which adds
formal error reporting.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge tag 'pull-qapi-2024-09-10' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-09-10

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-qapi-2024-09-10' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2024-09-10

# -----BEGIN PGP SIGNATURE-----
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# d/C8wzpcbhdNOECwC/wDtgZHvCC95cHNrxuC4+4/Q1KIVVr+1cWqe8hQzFvm3TIg
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# m3/F34Z3yqgFuZQrZv4OPo7xHK0+y7uZ60RrhSJtE0X080syRJKBbGmNBRidoVyu
# JOONWH44I/XN5enZV8StJnqJr9MCV0DBZUCi9ZhP/kAhBjLc5cQ6NByEa9/rebYX
# 1bLTiA1JDLzDVIan+A8dz0riWmHBvTyBwhLnEXvXb9lcB3ozgHTb7axE5RnZSYLI
# YQgBOBMFuQKM
# =YO/Q
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 10 Sep 2024 14:36:00 BST
# gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg: issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2024-09-10' of https://repo.or.cz/qemu/armbru:
qapi/vfio: Rename VfioMigrationState to Qapi*, and drop prefix
qapi/cryptodev: Rename QCryptodevBackendAlgType to *Algo, and drop prefix
qapi/cryptodev: Drop unwanted 'prefix'
qapi/crypto: Rename QCryptoAFAlg to QCryptoAFAlgo
qapi/crypto: Rename QCryptoRSAPaddingAlgorithm to *Algo, and drop prefix
qapi/crypto: Rename QCryptoAkCipherAlgorithm to *Algo, and drop prefix
qapi/crypto: Rename QCryptoIVGenAlgorithm to *Algo, and drop prefix
qapi/crypto: Rename QCryptoCipherAlgorithm to *Algo, and drop prefix
qapi/crypto: Rename QCryptoHashAlgorithm to *Algo, and drop prefix
qapi/crypto: Drop unwanted 'prefix'
qapi/machine: Rename CpuS390* to S390Cpu*, and drop 'prefix'
qapi/ui: Drop temporary 'prefix'
qapi/machine: Drop temporary 'prefix'
qapi/ebpf: Drop temporary 'prefix'
qapi/crypto: Drop temporary 'prefix'
qapi/common: Drop temporary 'prefix'
qapi/block-core: Drop temporary 'prefix'
tests/qapi-schema: Drop temporary 'prefix'
qapi: Smarter camel_to_upper() to reduce need for 'prefix'

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

show more ...

qapi/ebpf: Drop temporary 'prefix'

Recent commit "qapi: Smarter camel_to_upper() to reduce need for
'prefix'" added a temporary 'prefix' to delay changing the generated
code.

Revert it. This impro

qapi/ebpf: Drop temporary 'prefix'

Recent commit "qapi: Smarter camel_to_upper() to reduce need for
'prefix'" added a temporary 'prefix' to delay changing the generated
code.

Revert it. This improves EbpfProgramID's generated enumeration
constant prefix from EBPF_PROGRAMID to EBPF_PROGRAM_ID.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240904111836.3273842-7-armbru@redhat.com>

show more ...

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

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

# -----BEGIN PGP SIGNATURE-----
#
# iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmZewo4ACgkQ7wSWWzmN
# YhHhxgf/ZaECxru4fP8wi34XdSG/PR+BF+W5M9gZIRGrHg3vIf3/LRTpZTDccbRN
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# HKYUIfIlbFCM5WUW4huMmg98gKTgnzZMqOoRyMFZitbkR59qCm+Exws4HtXvCH68
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# uAy2GvFyrwzcD0lYqf0/fRK0Go0HPA==
# =J70K
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 04 Jun 2024 02:30:22 AM CDT
# gpg: using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
ebpf: Added traces back. Changed source set for eBPF to 'system'.
virtio-net: drop too short packets early
ebpf: Add a separate target for skeleton
ebpf: Refactor tun_rss_steering_prog()
ebpf: Return 0 when configuration fails
ebpf: Fix RSS error handling
virtio-net: Do not write hashes to peer buffer
virtio-net: Always set populate_hash
virtio-net: Unify the logic to update NIC state for RSS
virtio-net: Disable RSS on reset
virtio-net: Shrink header byte swapping buffer
virtio-net: Copy header only when necessary
virtio-net: Add only one queue pair when realizing
virtio-net: Do not propagate ebpf-rss-fds errors
tap: Shrink zeroed virtio-net header
tap: Call tap_receive_iov() from tap_receive()
net: Remove receive_raw()
net: Move virtio-net header length assertion
tap: Remove qemu_using_vnet_hdr()
tap: Remove tap_probe_vnet_hdr_len()

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

show more ...

ebpf: Added traces back. Changed source set for eBPF to 'system'.

There was an issue with Qemu build with "--disable-system".
The traces could be generated and the build fails.
The traces were 'cut

ebpf: Added traces back. Changed source set for eBPF to 'system'.

There was an issue with Qemu build with "--disable-system".
The traces could be generated and the build fails.
The traces were 'cut out' for previous patches, and overall,
the 'system' source set should be used like in pre-'eBPF blob' patches.

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

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

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

# -----BEGIN PGP SIGNATURE-----
#
# iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmYGZ7EACgkQ7wSWWzmN
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# =shO6
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 29 Mar 2024 07:03:13 GMT
# gpg: using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# 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:
Revert "tap: setting error appropriately when calling net_init_tap_one()"
tap-win32: Remove unnecessary stubs
hw/net/net_tx_pkt: Fix virtio header without checksum offloading
ebpf: Fix indirections table setting
virtio-net: Fix vhost virtqueue notifiers for RSS

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

show more ...

ebpf: Fix indirections table setting

The kernel documentation says:
> The value stored can be of any size, however, all array elements are
> aligned to 8 bytes.
https://www.kernel.org/doc/html/v6.8/

ebpf: Fix indirections table setting

The kernel documentation says:
> The value stored can be of any size, however, all array elements are
> aligned to 8 bytes.
https://www.kernel.org/doc/html/v6.8/bpf/map_array.html

Fixes: 333b3e5fab75 ("ebpf: Added eBPF map update through mmap.")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

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

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

# -----BEGIN PGP SIGNATURE-----
#
# iQEzBAABCAAdFiEEIV1G9IJGaJ7HfzVi7wSWWzmNYhEFAmXwPUAACgkQ7wSWWzmN
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# WbzInjMvYfysmcMXLfrWgxOnVew9WqEzlpEWlc7FfNKnkzBVf+JDztfqCUx0XM7H
# qefw4ImjqQw993QxJpipXC7aEGUyouB0RIBB71FkCa9ihlh9x7W68evbOI/jTn5q
# HWuStgS02sKHjRFliMbdbMY77FNUz4Yroo/GKSvGt64atxkQSJqPNAV+/9n18LNy
# QAH5eK6cXFPOIAaYpADU5kHDVVAFiw==
# =iBdx
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 12 Mar 2024 11:32:16 GMT
# gpg: using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# 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:
ebpf: Updated eBPF program and skeleton.
qmp: Added new command to retrieve eBPF blob.
virtio-net: Added property to load eBPF RSS with fds.
ebpf: Added eBPF initialization by fds.
ebpf: Added eBPF map update through mmap.
Avoid unaligned fetch in ladr_match()
e1000e: fix link state on resume
igb: fix link state on resume

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

show more ...

qmp: Added new command to retrieve eBPF blob.

Now, the binary objects may be retrieved by id.
It would require for future qmp commands that may require specific
eBPF blob.

Added command "request-eb

qmp: Added new command to retrieve eBPF blob.

Now, the binary objects may be retrieved by id.
It would require for future qmp commands that may require specific
eBPF blob.

Added command "request-ebpf". This command returns
eBPF program encoded base64. The program taken from the
skeleton and essentially is an ELF object that can be
loaded in the future with libbpf.

The reason to use the command to provide the eBPF object
instead of a separate artifact was to avoid issues related
to finding the eBPF itself. eBPF object is an ELF binary
that contains the eBPF program and eBPF map description(BTF).
Overall, eBPF object should contain the program and enough
metadata to create/load eBPF with libbpf. As the eBPF
maps/program should correspond to QEMU, the eBPF can't
be used from different QEMU build.

The first solution was a helper that comes with QEMU
and loads appropriate eBPF objects. And the issue is
to find a proper helper if the system has several
different QEMUs installed and/or built from the source,
which helpers may not be compatible.

Another issue is QEMU updating while there is a running
QEMU instance. With an updated helper, it may not be
possible to hotplug virtio-net device to the already
running QEMU. Overall, requesting the eBPF object from
QEMU itself solves possible failures with acceptable effort.

Links:
[PATCH 3/5] qmp: Added the helper stamp check.
https://lore.kernel.org/all/20230219162100.174318-4-andrew@daynix.com/

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

ebpf: Added eBPF initialization by fds.

It allows using file descriptors of eBPF provided
outside of QEMU.
QEMU may be run without capabilities for eBPF and run
RSS program provided by management to

ebpf: Added eBPF initialization by fds.

It allows using file descriptors of eBPF provided
outside of QEMU.
QEMU may be run without capabilities for eBPF and run
RSS program provided by management tool(g.e. libvirt).

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

ebpf: Added eBPF map update through mmap.

Changed eBPF map updates through mmaped array.
Mmaped arrays provide direct access to map data.
It should omit using bpf_map_update_elem() call,
which may r

ebpf: Added eBPF map update through mmap.

Changed eBPF map updates through mmaped array.
Mmaped arrays provide direct access to map data.
It should omit using bpf_map_update_elem() call,
which may require capabilities that are not present.

Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

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

# -----BEGIN PGP SIGNATURE-----
# Version: GnuPG v1
#
# iQEcBAABAgAGBQJixQP1AAoJEO8Ells5jWIRAsEH/jDlZa1m8jM7vGn6VVUhC6gR

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

# -----BEGIN PGP SIGNATURE-----
# Version: GnuPG v1
#
# iQEcBAABAgAGBQJixQP1AAoJEO8Ells5jWIRAsEH/jDlZa1m8jM7vGn6VVUhC6gR
# wnwMZVVrg/N+P6614dQ6jFEhTL52AhNONCwl+nzKZDksWMtkX/Owy3DEx0HqXk3m
# DyQyI5ngBiRPOOOlgyVHMyc304TFmf9qh4Cz80o5UNsI50lpLMA/vpwgK3zz/KXZ
# V6d5C3+kL2y7l5dmHuASiUD8xRTQvDn3/mY94VNzwU36uqODwAizm6Ft6ohTkvdO
# WtPQ9AXiVUyHigCxX4r7l9vZjBw0sobVYS1TEoagB2wiEpwTnOYbPhGntBP1eMzv
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# =yqUz
# -----END PGP SIGNATURE-----
# gpg: Signature made Wed 06 Jul 2022 09:09:33 AM +0530
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
ebpf: replace deprecated bpf_program__set_socket_filter
e1000: set RX descriptor status in a separate operation

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

show more ...

ebpf: replace deprecated bpf_program__set_socket_filter

bpf_program__set_<TYPE> functions have been deprecated since libbpf 0.8.
Replace with the equivalent bpf_program__set_type call to avoid a
dep

ebpf: replace deprecated bpf_program__set_socket_filter

bpf_program__set_<TYPE> functions have been deprecated since libbpf 0.8.
Replace with the equivalent bpf_program__set_type call to avoid a
deprecation warning.

Signed-off-by: Haochen Tong <i@hexchain.org>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

show more ...

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Fri 04 Jun 2021 08:26:16 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Fri 04 Jun 2021 08:26:16 BST
# gpg: using RSA key EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F 3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
MAINTAINERS: Added eBPF maintainers information.
docs: Added eBPF documentation.
virtio-net: Added eBPF RSS to virtio-net.
ebpf: Added eBPF RSS loader.
ebpf: Added eBPF RSS program.
net: Added SetSteeringEBPF method for NetClientState.
net/tap: Added TUNSETSTEERINGEBPF code.

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

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ebpf: Added eBPF RSS loader.

Added function that loads RSS eBPF program.
Added stub functions for RSS eBPF loader.
Added meson and configuration options.

By default, eBPF feature enabled if libbpf

ebpf: Added eBPF RSS loader.

Added function that loads RSS eBPF program.
Added stub functions for RSS eBPF loader.
Added meson and configuration options.

By default, eBPF feature enabled if libbpf is present in the build system.
libbpf checked in configuration shell script and meson script.

Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
Signed-off-by: Andrew Melnychenko <andrew@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

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