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From a9095850da8dd4ea3fdb725cb7f79118144e22fa Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
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Date: Thu, 21 Jul 2022 15:39:27 +0200
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Subject: [PATCH 22/32] vhost-net-vdpa: add stubs for when no virtio-net device
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is present
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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: Eugenio Pérez <eperezma@redhat.com>
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RH-MergeRequest: 108: Net Control Virtqueue shadow Support
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RH-Commit: [22/27] a2b25a805bb06094a5fab27ce8f82bee12a9fcb5 (eperezmartin/qemu-kvm)
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RH-Bugzilla: 1939363
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RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
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RH-Acked-by: Cindy Lu <lulu@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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Bugzilla: https://bugzilla.redhat.com/1939363
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Upstream Status: git://git.qemu.org/qemu.git
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commit 94c643732dc110d04bbdf0eb43c41bce23b3593e
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Author: Eugenio Pérez <eperezma@redhat.com>
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Date: Wed Jul 20 08:59:41 2022 +0200
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vhost-net-vdpa: add stubs for when no virtio-net device is present
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net/vhost-vdpa.c will need functions that are declared in
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vhost-shadow-virtqueue.c, that needs functions of virtio-net.c.
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Copy the vhost-vdpa-stub.c code so
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only the constructor net_init_vhost_vdpa needs to be defined.
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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Signed-off-by: Jason Wang <jasowang@redhat.com>
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Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
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---
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net/meson.build | 3 ++-
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net/vhost-vdpa-stub.c | 21 +++++++++++++++++++++
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2 files changed, 23 insertions(+), 1 deletion(-)
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create mode 100644 net/vhost-vdpa-stub.c
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diff --git a/net/meson.build b/net/meson.build
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index c965e83b26..116a9e7cbb 100644
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--- a/net/meson.build
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+++ b/net/meson.build
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@@ -41,7 +41,8 @@ endif
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softmmu_ss.add(when: 'CONFIG_POSIX', if_true: files(tap_posix))
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softmmu_ss.add(when: 'CONFIG_WIN32', if_true: files('tap-win32.c'))
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if have_vhost_net_vdpa
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- softmmu_ss.add(files('vhost-vdpa.c'))
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+ softmmu_ss.add(when: 'CONFIG_VIRTIO_NET', if_true: files('vhost-vdpa.c'), if_false: files('vhost-vdpa-stub.c'))
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+ softmmu_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-vdpa-stub.c'))
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endif
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subdir('can')
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diff --git a/net/vhost-vdpa-stub.c b/net/vhost-vdpa-stub.c
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new file mode 100644
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index 0000000000..1732ed2443
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--- /dev/null
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+++ b/net/vhost-vdpa-stub.c
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@@ -0,0 +1,21 @@
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+/*
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+ * vhost-vdpa-stub.c
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+ *
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+ * Copyright (c) 2022 Red Hat, Inc.
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+ *
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+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
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+ * See the COPYING file in the top-level directory.
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+ *
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+ */
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+
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+#include "qemu/osdep.h"
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+#include "clients.h"
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+#include "net/vhost-vdpa.h"
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+#include "qapi/error.h"
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+
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+int net_init_vhost_vdpa(const Netdev *netdev, const char *name,
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+ NetClientState *peer, Error **errp)
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+{
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+ error_setg(errp, "vhost-vdpa requires frontend driver virtio-net-*");
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+ return -1;
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+}
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--
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2.31.1
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