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(unknown [2a02:6bf:8080:a8c::1:19]) by mail-nwsmtp-smtp-corp-main-69.vla.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id LfP2M73FEmI0-ehkGRQYn; Thu, 16 Oct 2025 14:41:28 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1760614888; bh=4rS5GwKjIvlDX1eshLc4ZTaaWpM9BPePyTr5g8fR2nE=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=ZxvaYQe2l/ECS6bCdiFwdBkT1icqfbUOvLZwVEcEU6vm/SJx/gkhP6jwRW1R3fmpl wy5/3mn/UKNBgILAGNDD40PvPZ7JX5vcrOtoSx8Cu6RsPBfFgVZPPd4+QKWJAhrc1X Cj3UYvBKncrxqW2jWUrbqABgM24rp+Wk1FGXMuQU= Authentication-Results: mail-nwsmtp-smtp-corp-main-69.vla.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: raphael@enfabrica.net, pbonzini@redhat.com, farosas@suse.de Cc: mst@redhat.com, sgarzare@redhat.com, marcandre.lureau@redhat.com, kwolf@redhat.com, hreitz@redhat.com, berrange@redhat.com, eblake@redhat.com, armbru@redhat.com, qemu-devel@nongnu.org, qemu-block@nongnu.org, steven.sistare@oracle.com, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, jasowang@redhat.com Subject: [PATCH v2 06/25] vhost-user: support connect api Date: Thu, 16 Oct 2025 14:40:43 +0300 Message-ID: <20251016114104.1384675-7-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20251016114104.1384675-1-vsementsov@yandex-team.ru> References: <20251016114104.1384675-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1760614990137154100 Content-Type: text/plain; charset="utf-8" Memory allocation and connecting of structures remain ins _init(), communication with backend goes to _connect(). We need this for further support of backend-transfer migration of vhost-user-blk, as we'll need to postpone (or not do) initial communication to backend. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz --- hw/virtio/vhost-user.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index e45b74eddd..c5cb5ed528 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -2270,21 +2270,12 @@ static int vhost_user_postcopy_notifier(NotifierWit= hReturn *notifier, return 0; } =20 -static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque, - Error **errp) +static int vhost_user_backend_connect(struct vhost_dev *dev, Error **errp) { uint64_t features, ram_slots; - struct vhost_user *u; - VhostUserState *vus =3D (VhostUserState *) opaque; + struct vhost_user *u =3D dev->opaque; int err; =20 - assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER); - - u =3D g_new0(struct vhost_user, 1); - u->user =3D vus; - u->dev =3D dev; - dev->opaque =3D u; - err =3D vhost_user_get_features(dev, &features); if (err < 0) { error_setg_errno(errp, -err, "vhost_backend_init failed"); @@ -2292,7 +2283,7 @@ static int vhost_user_backend_init(struct vhost_dev *= dev, void *opaque, } =20 if (virtio_has_feature(features, VHOST_USER_F_PROTOCOL_FEATURES)) { - bool supports_f_config =3D vus->supports_config || + bool supports_f_config =3D u->user->supports_config || (dev->config_ops && dev->config_ops->vhost_dev_config_notifier= ); uint64_t protocol_features; =20 @@ -2408,6 +2399,22 @@ static int vhost_user_backend_init(struct vhost_dev = *dev, void *opaque, return 0; } =20 +static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque, + Error **errp) +{ + struct vhost_user *u; + VhostUserState *vus =3D (VhostUserState *) opaque; + + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER); + + u =3D g_new0(struct vhost_user, 1); + u->user =3D vus; + u->dev =3D dev; + dev->opaque =3D u; + + return 0; +} + static int vhost_user_backend_cleanup(struct vhost_dev *dev) { struct vhost_user *u; @@ -3133,6 +3140,7 @@ void vhost_user_qmp_status(struct vhost_dev *dev, Vir= tioStatus *status) const VhostOps user_ops =3D { .backend_type =3D VHOST_BACKEND_TYPE_USER, .vhost_backend_init =3D vhost_user_backend_init, + .vhost_backend_connect =3D vhost_user_backend_connect, .vhost_backend_cleanup =3D vhost_user_backend_cleanup, .vhost_backend_memslots_limit =3D vhost_user_memslots_limit, .vhost_backend_no_private_memslots =3D vhost_user_no_private_memsl= ots, --=20 2.48.1