d10ea1f259
- kvm-util-iov-Make-qiov_slice-public.patch [bz#2174676] - kvm-block-Collapse-padded-I-O-vecs-exceeding-IOV_MAX.patch [bz#2174676] - kvm-util-iov-Remove-qemu_iovec_init_extended.patch [bz#2174676] - kvm-iotests-iov-padding-New-test.patch [bz#2174676] - kvm-block-Fix-pad_request-s-request-restriction.patch [bz#2174676] - kvm-vdpa-do-not-block-migration-if-device-has-cvq-and-x-.patch [RHEL-573] - kvm-virtio-net-correctly-report-maximum-tx_queue_size-va.patch [bz#2040509] - kvm-hw-pci-Disable-PCI_ERR_UNCOR_MASK-reg-for-machine-ty.patch [bz#2223691] - kvm-vhost-vdpa-mute-unaligned-memory-error-report.patch [bz#2141965] - Resolves: bz#2174676 (Guest hit EXT4-fs error on host 4K disk when repeatedly hot-plug/unplug running IO disk [RHEL9]) - Resolves: RHEL-573 ([mlx vhost_vdpa][rhel 9.3]live migration fail with "net vdpa cannot migrate with CVQ feature") - Resolves: bz#2040509 ([RFE]:Add support for changing "tx_queue_size" to a setable value) - Resolves: bz#2223691 ([machine type 9.2]Failed to migrate VM from RHEL 9.3 to RHEL 9.2) - Resolves: bz#2141965 ([TPM][vhost-vdpa][rhel9.2]Boot a guest with "vhost-vdpa + TPM emulator", qemu output: qemu-kvm: vhost_vdpa_listener_region_add received unaligned region)
93 lines
3.1 KiB
Diff
93 lines
3.1 KiB
Diff
From 4fe096a6fad61ab721fd29324d48383c7f427ac9 Mon Sep 17 00:00:00 2001
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From: Laurent Vivier <lvivier@redhat.com>
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Date: Mon, 5 Jun 2023 16:21:25 +0200
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Subject: [PATCH 7/9] virtio-net: correctly report maximum tx_queue_size value
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Laurent Vivier <lvivier@redhat.com>
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RH-MergeRequest: 191: virtio-net: correctly report maximum tx_queue_size value
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RH-Bugzilla: 2040509
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Acked-by: Eugenio Pérez <eperezma@redhat.com>
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RH-Commit: [1/1] afb944c6d75fe476ac86fe267b1cca5f272dfbbd (lvivier/qemu-kvm-centos)
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BZ: https://bugzilla.redhat.com/show_bug.cgi?id=2040509
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Maximum value for tx_queue_size depends on the backend type.
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1024 for vDPA/vhost-user, 256 for all the others.
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The value is returned by virtio_net_max_tx_queue_size() to set the
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parameter:
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n->net_conf.tx_queue_size = MIN(virtio_net_max_tx_queue_size(n),
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n->net_conf.tx_queue_size);
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But the parameter checking uses VIRTQUEUE_MAX_SIZE (1024).
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So the parameter is silently ignored and ethtool reports a different
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value than the one provided by the user.
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... -netdev tap,... -device virtio-net,tx_queue_size=1024
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# ethtool -g enp0s2
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Ring parameters for enp0s2:
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Pre-set maximums:
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RX: 256
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RX Mini: n/a
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RX Jumbo: n/a
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TX: 256
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Current hardware settings:
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RX: 256
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RX Mini: n/a
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RX Jumbo: n/a
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TX: 256
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... -netdev vhost-user,... -device virtio-net,tx_queue_size=2048
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Invalid tx_queue_size (= 2048), must be a power of 2 between 256 and 1024
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With this patch the correct maximum value is checked and displayed.
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For vDPA/vhost-user:
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Invalid tx_queue_size (= 2048), must be a power of 2 between 256 and 1024
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For all the others:
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Invalid tx_queue_size (= 512), must be a power of 2 between 256 and 256
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Fixes: 2eef278b9e63 ("virtio-net: fix tx queue size for !vhost-user")
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Cc: mst@redhat.com
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Laurent Vivier <lvivier@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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(cherry picked from commit 4271f4038372f174dbafffacca1a748d058a03ba)
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---
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hw/net/virtio-net.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
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index 447f669921..ae1e6a5e3d 100644
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--- a/hw/net/virtio-net.c
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+++ b/hw/net/virtio-net.c
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@@ -3628,12 +3628,12 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
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}
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if (n->net_conf.tx_queue_size < VIRTIO_NET_TX_QUEUE_MIN_SIZE ||
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- n->net_conf.tx_queue_size > VIRTQUEUE_MAX_SIZE ||
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+ n->net_conf.tx_queue_size > virtio_net_max_tx_queue_size(n) ||
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!is_power_of_2(n->net_conf.tx_queue_size)) {
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error_setg(errp, "Invalid tx_queue_size (= %" PRIu16 "), "
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"must be a power of 2 between %d and %d",
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n->net_conf.tx_queue_size, VIRTIO_NET_TX_QUEUE_MIN_SIZE,
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- VIRTQUEUE_MAX_SIZE);
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+ virtio_net_max_tx_queue_size(n));
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virtio_cleanup(vdev);
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return;
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}
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--
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2.39.3
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