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bh=CwDzVv8vVIGdgufhvskvFm88w8TifsKMZGwYpyVL/sY=; b=WKcyJy09ETY3dZbRCInRMjksk+nxIYjCZPyTMoNfOIZVO1ckG4b0jP7hNsWZ2SvUTDipkp KCn2OKjm6QlQC6Owci7VkU1jZ5C17vnbWaLP8GPrczjGdX+6nkEDfshnj4gZuOSspEToNM gsX4CVxJ3mma6OMB7s75mCyeBzJKVV8= X-MC-Unique: 3JGtlrwJNX2ItXorBuUBxA-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 01/12] net: introduce qemu_get_peer Date: Wed, 1 Jul 2020 01:49:25 +0800 Message-Id: <20200630174937.25560-2-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" This is a small function that can get the peer from given NetClientState and queue_index Signed-off-by: Cindy Lu --- include/net/net.h | 1 + net/net.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index 39085d9444..e7ef42d62b 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -176,6 +176,7 @@ void hmp_info_network(Monitor *mon, const QDict *qdict); void net_socket_rs_init(SocketReadState *rs, SocketReadStateFinalize *finalize, bool vnet_hdr); +NetClientState *qemu_get_peer(NetClientState *nc, int queue_index); =20 /* NIC info */ =20 diff --git a/net/net.c b/net/net.c index d1130296e1..9099a327dd 100644 --- a/net/net.c +++ b/net/net.c @@ -325,6 +325,13 @@ void *qemu_get_nic_opaque(NetClientState *nc) return nic->opaque; } =20 +NetClientState *qemu_get_peer(NetClientState *nc, int queue_index) +{ + assert(nc !=3D NULL); + NetClientState *ncs =3D nc + queue_index; + return ncs->peer; +} + static void qemu_cleanup_net_client(NetClientState *nc) { QTAILQ_REMOVE(&net_clients, nc, next); 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bh=ISW+sRA4nzGlcLP35HnzkU0vFxi6qWP4ttdgCor+hqA=; b=BxOsP+iwC1CRF2mYvRuwSveBdiTXSI1pOOehpSyOq2XTgAE4Eez3V/dchn0GFyiQtsUfkA PWeHjV8WsAb3S2it9lRwo17lh8i5tacEcvQVA97Xe42mLGZrB4G9UBhJvh+loduEFoLbwn 37snodKLi8rf1JhjkUmddGLFBIX1mT8= X-MC-Unique: 8pjJxOutMPOi86vYqI20EA-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 02/12] vhost_net: use the function qemu_get_peer Date: Wed, 1 Jul 2020 01:49:26 +0800 Message-Id: <20200630174937.25560-3-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" user the qemu_get_peer to replace the old process Signed-off-by: Cindy Lu Reviewed-by: Laurent Vivier --- hw/net/vhost_net.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 6b82803fa7..4096d64aaf 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -306,7 +306,9 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *= ncs, BusState *qbus =3D BUS(qdev_get_parent_bus(DEVICE(dev))); VirtioBusState *vbus =3D VIRTIO_BUS(qbus); VirtioBusClass *k =3D VIRTIO_BUS_GET_CLASS(vbus); + struct vhost_net *net; int r, e, i; + NetClientState *peer; =20 if (!k->set_guest_notifiers) { error_report("binding does not support guest notifiers"); @@ -314,9 +316,9 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *= ncs, } =20 for (i =3D 0; i < total_queues; i++) { - struct vhost_net *net; =20 - net =3D get_vhost_net(ncs[i].peer); + peer =3D qemu_get_peer(ncs, i); + net =3D get_vhost_net(peer); vhost_net_set_vq_index(net, i * 2); =20 /* Suppress the masking guest notifiers on vhost user @@ -335,15 +337,16 @@ int vhost_net_start(VirtIODevice *dev, NetClientState= *ncs, } =20 for (i =3D 0; i < total_queues; i++) { - r =3D vhost_net_start_one(get_vhost_net(ncs[i].peer), dev); + peer =3D qemu_get_peer(ncs, i); + r =3D vhost_net_start_one(get_vhost_net(peer), dev); =20 if (r < 0) { goto err_start; } =20 - if (ncs[i].peer->vring_enable) { + if (peer->vring_enable) { /* restore vring enable state */ - r =3D vhost_set_vring_enable(ncs[i].peer, ncs[i].peer->vring_e= nable); + r =3D vhost_set_vring_enable(peer, peer->vring_enable); =20 if (r < 0) { goto err_start; @@ -355,7 +358,8 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *= ncs, =20 err_start: while (--i >=3D 0) { - vhost_net_stop_one(get_vhost_net(ncs[i].peer), dev); + peer =3D qemu_get_peer(ncs , i); + vhost_net_stop_one(get_vhost_net(peer), dev); } e =3D k->set_guest_notifiers(qbus->parent, total_queues * 2, false); if (e < 0) { --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" From: Jason Wang This patch introduces queue_enabled() method which allows the transport to implement its own way to report whether or not a queue is enabled. Signed-off-by: Jason Wang Signed-off-by: Cindy Lu --- hw/virtio/virtio.c | 6 ++++++ include/hw/virtio/virtio-bus.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index cc9c9dc162..5bd2a2f621 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3286,6 +3286,12 @@ hwaddr virtio_queue_get_desc_addr(VirtIODevice *vdev= , int n) =20 bool virtio_queue_enabled(VirtIODevice *vdev, int n) { + BusState *qbus =3D qdev_get_parent_bus(DEVICE(vdev)); + VirtioBusClass *k =3D VIRTIO_BUS_GET_CLASS(qbus); + + if (k->queue_enabled) { + return k->queue_enabled(qbus->parent, n); + } return virtio_queue_get_desc_addr(vdev, n) !=3D 0; } =20 diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index 38c9399cd4..0f6f215925 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -83,6 +83,10 @@ typedef struct VirtioBusClass { */ int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier, int n, bool assign); + /* + * Whether queue number n is enabled. + */ + bool (*queue_enabled)(DeviceState *d, int n); /* * Does the transport have variable vring alignment? * (ie can it ever call virtio_queue_set_align()?) --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539595; cv=none; d=zohomail.com; s=zohoarc; b=DaFplAXCgY4cFwFBtAHObf6ou6l2gRB/Ny32ygALe2kTWkNeadaZqam/fAG9hgW2pWCxtgczxjitvUsD8/NJu0lQdwWKDpCGAUB7Pew0CeYQZjJIC6M4s68DnZl0LSpT5M4b+rQfiF5InuVIlzUyJelmBdirBqwwIkfjinRKB4A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539595; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539512; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8ZesxalmhCuhZ6jk8xrSJ4YUFbv16yFo2IwkNdXZRec=; b=Knj6hyjjbnzYpFHovqUM0S4qx/sBegf9u0tWYCjgpIdTTOGImU8cstts6JIGB/0xvwnywT mASdZzV3klB60GZdJ8k8aibuRLPGabTxJan5YDJSVSGkbR77wKFuvcw/RSn6tRhpidnRBQ xJrQx+Ddt6zD2nmmFt//Hn+2YyCgGMk= X-MC-Unique: gyDHkWtoMMOi4QLOG3BV5Q-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 04/12] virtio-pci: implement queue_enabled method Date: Wed, 1 Jul 2020 01:49:28 +0800 Message-Id: <20200630174937.25560-5-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" From: Jason Wang With version 1, we can detect whether a queue is enabled via queue_enabled. Signed-off-by: Jason Wang Signed-off-by: Cindy Lu --- hw/virtio/virtio-pci.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 7bc8c1c056..8554cf2a03 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1107,6 +1107,18 @@ static AddressSpace *virtio_pci_get_dma_as(DeviceSta= te *d) return pci_get_address_space(dev); } =20 +static bool virtio_pci_queue_enabled(DeviceState *d, int n) +{ + VirtIOPCIProxy *proxy =3D VIRTIO_PCI(d); + VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); + + if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { + return proxy->vqs[vdev->queue_sel].enabled; + } + + return virtio_queue_enabled(vdev, n); +} + static int virtio_pci_add_mem_cap(VirtIOPCIProxy *proxy, struct virtio_pci_cap *cap) { @@ -2064,6 +2076,7 @@ static void virtio_pci_bus_class_init(ObjectClass *kl= ass, void *data) k->ioeventfd_enabled =3D virtio_pci_ioeventfd_enabled; k->ioeventfd_assign =3D virtio_pci_ioeventfd_assign; k->get_dma_as =3D virtio_pci_get_dma_as; + k->queue_enabled =3D virtio_pci_queue_enabled; } =20 static const TypeInfo virtio_pci_bus_info =3D { --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539672; cv=none; d=zohomail.com; s=zohoarc; b=VQXQHnO/t2NdeT9BiguKuFeYEgBOEVtNJyxbEA/LbDSvC4umBqecbZVSSJNMcjix9O7E2heq5kEqfu1qI2+TZLw0ccU9M2cjcRyY86CVaWugeaLKI+o0QpT3BQm0SzpBTmYrHNiPoEAxAkLP7RO8dRbmlYD8XN34sxwBMMrVJl4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539672; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539538; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Aqbn5cjLxcucAVNC8M/qELLxXLnelvNb6uqjwQ+9wms=; b=BSiTs7/jKNSa4HxSYJZ8rP225p6pRKJKxTUWNic7Uzskyw3cpWGMt+RtiV/BZaR9uC9lEx BDfMs5ZERe6rNWWcLx21L1SffwJgzJJXFmj/9nR740kOiyFQRnRlkQ9eqgJmlDCwUlnHqt REP6Yi86cFZfX3aYoSvPglT8k8AeXrk= X-MC-Unique: yB31_oCLOL2w27LiYX5tew-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 05/12] vhost: check the existence of vhost_set_iotlb_callback Date: Wed, 1 Jul 2020 01:49:29 +0800 Message-Id: <20200630174937.25560-6-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" From: Jason Wang Add the check of vhost_set_iotlb_callback before calling Signed-off-by: Jason Wang Signed-off-by: Cindy Lu --- hw/virtio/vhost.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 5fd25fe520..10304b583e 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1686,8 +1686,9 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODev= ice *vdev) } } =20 - if (vhost_dev_has_iommu(hdev)) { - hdev->vhost_ops->vhost_set_iotlb_callback(hdev, true); + if (vhost_dev_has_iommu(hdev) && + hdev->vhost_ops->vhost_set_iotlb_callback) { + hdev->vhost_ops->vhost_set_iotlb_callback(hdev, true); =20 /* Update used ring information for IOTLB to work correctly, * vhost-kernel code requires for this.*/ @@ -1730,7 +1731,9 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODev= ice *vdev) } =20 if (vhost_dev_has_iommu(hdev)) { - hdev->vhost_ops->vhost_set_iotlb_callback(hdev, false); + if (hdev->vhost_ops->vhost_set_iotlb_callback) { + hdev->vhost_ops->vhost_set_iotlb_callback(hdev, false); + } memory_listener_unregister(&hdev->iommu_listener); } vhost_log_put(hdev, true); --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539625; cv=none; d=zohomail.com; s=zohoarc; b=MpTjE8N+RKXg+moHnWcAJpACDenAkiyCZ+2tSMMHM+KZ5UdNSiTSXtk9VwiDqgt5+vxOXg5QUEeLC8anUqFtydDSl2oIFug3TasfCpPjs5H1tNm1/+RUrO3LXMdsnXxeBM7zLSpGpMjFVKItaeWn4QpNpf+UM16pMy+ukJvird4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539625; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=rF9r7pf631yT4kewvrdEgptEGMLKP3lMFICG6ypU3Uk=; 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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539557; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rF9r7pf631yT4kewvrdEgptEGMLKP3lMFICG6ypU3Uk=; b=FadC2pu2hVqbdtCNxIRlOoPMUst2eLxsEJp0h403yqSBnOIu+zf/wi/YPk+8RUmuACDSxC +2jIB4qR4oh3XZc2Y6Kap+cjYpCtDgoyEH5hgROjUNjGbE01bfmwQoceAqGKGE1H+jkeJN EepopUNsRtn0XiG9wAEqk22xtHbXfks= X-MC-Unique: gxxWzigSMkyAqWMNOZMp0Q-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 06/12] vhost: introduce new VhostOps vhost_dev_start Date: Wed, 1 Jul 2020 01:49:30 +0800 Message-Id: <20200630174937.25560-7-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" This patch introduces new VhostOps vhost_dev_start callback which allows the vhost_net set the start/stop status to backend Signed-off-by: Cindy Lu --- include/hw/virtio/vhost-backend.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-ba= ckend.h index 6f6670783f..b80f344cd6 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -112,6 +112,7 @@ typedef int (*vhost_get_inflight_fd_op)(struct vhost_de= v *dev, typedef int (*vhost_set_inflight_fd_op)(struct vhost_dev *dev, struct vhost_inflight *inflight); =20 +typedef int (*vhost_dev_start_op)(struct vhost_dev *dev, bool started); typedef struct VhostOps { VhostBackendType backend_type; vhost_backend_init vhost_backend_init; @@ -152,6 +153,7 @@ typedef struct VhostOps { vhost_backend_mem_section_filter_op vhost_backend_mem_section_filter; vhost_get_inflight_fd_op vhost_get_inflight_fd; vhost_set_inflight_fd_op vhost_set_inflight_fd; + vhost_dev_start_op vhost_dev_start; } VhostOps; =20 extern const VhostOps user_ops; --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539755; cv=none; d=zohomail.com; s=zohoarc; b=GdHMJaGWQSpaM3E7nt9smkQqmXOSmiE2LDxGXG38KtrhOLn1MM5YJCgzmMY4luJ+pyoBBiXg9zvcwMMaZ42DGPg/VAUWOTY9ZCZ2xuZQvphAmJopy1pqdUZsbNbB+NhEK/F/4D+wuU4JnrwgRGfmtd8anUy8eQdMkZVElSu7Foo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539755; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=wucbBw00c2V1/vl8huKUxgbZY/HPysQg4R/6AvM6MCw=; 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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539592; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wucbBw00c2V1/vl8huKUxgbZY/HPysQg4R/6AvM6MCw=; b=M61aUUvVBqYQX/302x7aNZPOY7GN8VnX+bKIKARlTK0DOzJ9+WDRI4AkETkT8QKJaknUOf eG7ZSOJbG9wUh5uLqGPfLjia07Yi/Dz2l4JyxAY+STf8kp+VP+6m9PCzJ4Et6IGlY6/ta1 FxWFyEzRnMFn/s1YRJZhAauYv6/IqDY= X-MC-Unique: dugs3XdTOu-UYEeY5hT7gQ-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 07/12] vhost: implement vhost_dev_start method Date: Wed, 1 Jul 2020 01:49:31 +0800 Message-Id: <20200630174937.25560-8-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" use the vhost_dev_start callback to send the status to backend Signed-off-by: Cindy Lu --- hw/virtio/vhost.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 10304b583e..32809e54b5 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1685,7 +1685,12 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODe= vice *vdev) goto fail_log; } } - + if (hdev->vhost_ops->vhost_dev_start) { + r =3D hdev->vhost_ops->vhost_dev_start(hdev, true); + if (r) { + goto fail_log; + } + } if (vhost_dev_has_iommu(hdev) && hdev->vhost_ops->vhost_set_iotlb_callback) { hdev->vhost_ops->vhost_set_iotlb_callback(hdev, true); @@ -1723,6 +1728,9 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODev= ice *vdev) /* should only be called after backend is connected */ assert(hdev->vhost_ops); =20 + if (hdev->vhost_ops->vhost_dev_start) { + hdev->vhost_ops->vhost_dev_start(hdev, false); + } for (i =3D 0; i < hdev->nvqs; ++i) { vhost_virtqueue_stop(hdev, vdev, --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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bh=OVOMfM+qrBIZg0i/kq0OO3CC+fK4QzA2HrNfy0J9imU=; b=U8UdkW0FA6bL2PSpy9NmOjvMWw8FkEscXUyRh0jNGikpnHhbOPxhz2P6XpG2j7ujgV6xmm S50sB69utgPC7fAjIslAX1CnXsay45bDHbMPVwY84JiZNlux2t2y3UDfrtiY8GYVLLQ1yi 7H7UuVb3RPfO1mTt+oM+oqcxAEquNiU= X-MC-Unique: 2TQZD5_CPWGHx9Tw0moNaw-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 08/12] vhost: introduce new VhostOps vhost_vq_get_addr Date: Wed, 1 Jul 2020 01:49:32 +0800 Message-Id: <20200630174937.25560-9-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" This patch introduces new VhostOps vhost_vq_get_addr_op callback to get the vring addr from the backend Signed-off-by: Cindy Lu --- include/hw/virtio/vhost-backend.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-ba= ckend.h index b80f344cd6..fa84abac97 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -34,6 +34,7 @@ struct vhost_vring_state; struct vhost_vring_addr; struct vhost_scsi_target; struct vhost_iotlb_msg; +struct vhost_virtqueue; =20 typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque); typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev); @@ -113,6 +114,10 @@ typedef int (*vhost_set_inflight_fd_op)(struct vhost_d= ev *dev, struct vhost_inflight *inflight); =20 typedef int (*vhost_dev_start_op)(struct vhost_dev *dev, bool started); + +typedef int (*vhost_vq_get_addr_op)(struct vhost_dev *dev, + struct vhost_vring_addr *addr, + struct vhost_virtqueue *vq); typedef struct VhostOps { VhostBackendType backend_type; vhost_backend_init vhost_backend_init; @@ -154,6 +159,7 @@ typedef struct VhostOps { vhost_get_inflight_fd_op vhost_get_inflight_fd; vhost_set_inflight_fd_op vhost_set_inflight_fd; vhost_dev_start_op vhost_dev_start; + vhost_vq_get_addr_op vhost_vq_get_addr; } VhostOps; =20 extern const VhostOps user_ops; --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539746; cv=none; d=zohomail.com; s=zohoarc; b=PjmTaJG+UhOV0TQljvHPH03LFI8Wt6WcgC9yY5VjA+FLxdNHuLxf6yjF53Ksvwn9CugNaTxWAGqmV1pb5fX0Lt9GeYDzIqtWqma4umOeGCluBglOMwM18IL6nEDSrmP4wCXbb5TNJYhAAYXVv3H2lNJe9XRQTaDfJQQB7psfteA= ARC-Message-Signature: i=1; a=rsa-sha256; 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Tue, 30 Jun 2020 17:53:43 +0000 (UTC) Received: from laptop.redhat.com (ovpn-12-19.pek2.redhat.com [10.72.12.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id B299D61100; Tue, 30 Jun 2020 17:53:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539628; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rzqmVmfhl66aGJWNJW3FOBoJ8+40iEgl1UFIrB9hhGk=; b=TLMXA8oYH6NYLNy6+WVP5t2PsNoyxDrqaYj69E0p9ghef/PsAUILebsbNHsWnGbMYq8S4d OkBIvqaUBXPoKNjSrvfWBTspdI0QOkLhTlpGrwEoUDwdfu9iwDKhAvtm5TNlo/Bp4chP7S 53N2iml35hmp0hRo10o96EcvZtTYV3g= X-MC-Unique: mgSUvT7rOaCVO-a_CdV-2Q-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 09/12] vhost: implement vhost_vq_get_addr method Date: Wed, 1 Jul 2020 01:49:33 +0800 Message-Id: <20200630174937.25560-10-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" use vhost_vq_get_addr callback to get the vq address from backend Signed-off-by: Cindy Lu --- hw/virtio/vhost.c | 28 +++++++++++++++++++--------- 1 file changed, 19 insertions(+), 9 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 32809e54b5..1e083a8976 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -773,15 +773,25 @@ static int vhost_virtqueue_set_addr(struct vhost_dev = *dev, struct vhost_virtqueue *vq, unsigned idx, bool enable_log) { - struct vhost_vring_addr addr =3D { - .index =3D idx, - .desc_user_addr =3D (uint64_t)(unsigned long)vq->desc, - .avail_user_addr =3D (uint64_t)(unsigned long)vq->avail, - .used_user_addr =3D (uint64_t)(unsigned long)vq->used, - .log_guest_addr =3D vq->used_phys, - .flags =3D enable_log ? (1 << VHOST_VRING_F_LOG) : 0, - }; - int r =3D dev->vhost_ops->vhost_set_vring_addr(dev, &addr); + struct vhost_vring_addr addr; + int r; + memset(&addr, 0, sizeof(struct vhost_vring_addr)); + + if (dev->vhost_ops->vhost_vq_get_addr) { + r =3D dev->vhost_ops->vhost_vq_get_addr(dev, &addr, vq); + if (r < 0) { + VHOST_OPS_DEBUG("vhost_vq_get_addr failed"); + return -errno; + } + } else { + addr.desc_user_addr =3D (uint64_t)(unsigned long)vq->desc; + addr.avail_user_addr =3D (uint64_t)(unsigned long)vq->avail; + addr.used_user_addr =3D (uint64_t)(unsigned long)vq->used; + } + addr.index =3D idx; + addr.log_guest_addr =3D vq->used_phys; + addr.flags =3D enable_log ? (1 << VHOST_VRING_F_LOG) : 0; + r =3D dev->vhost_ops->vhost_set_vring_addr(dev, &addr); if (r < 0) { VHOST_OPS_DEBUG("vhost_set_vring_addr failed"); return -errno; --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539821; cv=none; d=zohomail.com; s=zohoarc; b=Z007E3Qvv5AsgydP/tjUHJKfLljW4+rNrloOpA8KfQaRZ7ZK77l8csMK82jxBpGsCo4bYMfJWjVKs7aEEo62WHl9zP4i3bxIS3JFocpFhKnjFUNGrgIa5KOvZBe4U19vx9NjoOFZU5e+Ymp8ozQILX2Ea/orv42YMgPo49rIOqg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539821; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539668; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=afzr2cf2xZP3QZ0H1fWH6zE6bxi1jugoDguKpLFqUvk=; b=eWZ+1j73PzO7smaHuSm7BOFX07jWD2xlTe0tDWElSX1dAo6ayf+yrTYJZrF3mN/j8dOrNK LQoInR5JG5oal3mXCSlHmM/mSrPtFDLhFxm9JatqjiN/eCkuvriI0UmvkhXEXGBEvQvpRs 2IlylcZRDYHOPewuXz6xdVM+U85HRx0= X-MC-Unique: nBE0KkXBOXC7QKYMTMgfqg-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 10/12] vhost: introduce new VhostOps vhost_get_device_id Date: Wed, 1 Jul 2020 01:49:34 +0800 Message-Id: <20200630174937.25560-11-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; 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charset="utf-8" This patch introduces new VhostOps vhost_get_device_id callback which can get the device id from backend Signed-off-by: Cindy Lu --- include/hw/virtio/vhost-backend.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-ba= ckend.h index fa84abac97..bfc24207e2 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -118,6 +118,9 @@ typedef int (*vhost_dev_start_op)(struct vhost_dev *dev= , bool started); typedef int (*vhost_vq_get_addr_op)(struct vhost_dev *dev, struct vhost_vring_addr *addr, struct vhost_virtqueue *vq); + +typedef int (*vhost_get_device_id_op)(struct vhost_dev *dev, uint32_t *dev= _id); + typedef struct VhostOps { VhostBackendType backend_type; vhost_backend_init vhost_backend_init; @@ -160,6 +163,7 @@ typedef struct VhostOps { vhost_set_inflight_fd_op vhost_set_inflight_fd; vhost_dev_start_op vhost_dev_start; vhost_vq_get_addr_op vhost_vq_get_addr; + vhost_get_device_id_op vhost_get_device_id; } VhostOps; =20 extern const VhostOps user_ops; --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1593539816; cv=none; d=zohomail.com; s=zohoarc; b=iWlB1B0fBe7GjlC5IEaD86KVjR8MFDqep3Ja2cNCxByB+1LEc/kEgN/RY4EqmCxOIlaGDI6Z/ijZOQ7fSs1mQL1eL/n3JPuKUpyltIlqI9a6F551doPwsZhmHLUs5rxw77l855avhLc0/BWGiVqzIv8GydQ41JJyeOIGvS1bRpA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1593539816; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=66zBzwCqqA/eFNZLmxji+vixfRZypoYMqHIPo/Eq1Tw=; b=gsHwvU+b6hZOXnhg555EOugweAvHRYgDAwbuwwo8LervgXQe5ytTbA0Eyr4FAWPE0voeYCVGaUfFZs4SlnBm/+E48UzXuQIhTVuFN3boPPHtWlRID/IDwQ3nOApQdimiQ/PsbyxUehg6M/F482JCEM369uKhVQ1TxdNUCncYo18= ARC-Authentication-Results: i=1; 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Tue, 30 Jun 2020 13:54:37 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-109-A2zZC7qrMxuP_x8FRPnxfQ-1; Tue, 30 Jun 2020 13:54:29 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AF2BD464; Tue, 30 Jun 2020 17:54:26 +0000 (UTC) Received: from laptop.redhat.com (ovpn-12-19.pek2.redhat.com [10.72.12.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6A1FA60C81; Tue, 30 Jun 2020 17:54:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593539673; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=66zBzwCqqA/eFNZLmxji+vixfRZypoYMqHIPo/Eq1Tw=; b=Spe8C6T4+4lgQ43Gc+ex2SDIbCJkkgEw7KwFL4/Z8VWWhchB3vHI2rWWkIcDOOHA4urRhJ cDqfnOl78ha57I6SjtpUxokgOgqONHSt6WWVhPvsW/LmnU6n4mfFio+8u0mON7qEfX1aS3 3XtxW4+z/z3Yle7Gx+c7omDxuNB6pB8= X-MC-Unique: A2zZC7qrMxuP_x8FRPnxfQ-1 From: Cindy Lu To: mst@redhat.com, armbru@redhat.com, eblake@redhat.com, cohuck@redhat.com, jasowang@redhat.com Subject: [PATCH v2 11/12] vhost-vdpa: introduce vhost-vdpa backend Date: Wed, 1 Jul 2020 01:49:35 +0800 Message-Id: <20200630174937.25560-12-lulu@redhat.com> In-Reply-To: <20200630174937.25560-1-lulu@redhat.com> References: <20200630174937.25560-1-lulu@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=lulu@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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; 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charset="utf-8" Currently we have 2 types of vhost backends in QEMU: vhost kernel and vhost-user. The above patch provides a generic device for vDPA purpose, this vDPA device exposes to user space a non-vendor-specific configuration interface for setting up a vhost HW accelerator, this patch set introduces a third vhost backend called vhost-vdpa based on the vDPA interface. Vhost-vdpa usage: qemu-system-x86_64 -cpu host -enable-kvm \ ...... -netdev type=3Dvhost-vdpa,vhostdev=3D/dev/vhost-vdpa-id,id=3Dvhost-vdpa= 0 \ -device virtio-net-pci,netdev=3Dvhost-vdpa0,page-per-vq=3Don \ Signed-off-by: Lingshan zhu Signed-off-by: Tiwei Bie Signed-off-by: Cindy Lu --- configure | 21 ++ docs/interop/index.rst | 1 + docs/interop/vhost-vdpa.rst | 17 ++ hw/net/vhost_net.c | 19 +- hw/net/virtio-net.c | 22 +- hw/virtio/Makefile.objs | 1 + hw/virtio/vhost-backend.c | 7 +- hw/virtio/vhost-vdpa.c | 469 ++++++++++++++++++++++++++++++ hw/virtio/vhost.c | 7 +- include/hw/virtio/vhost-backend.h | 4 +- include/hw/virtio/vhost-vdpa.h | 26 ++ include/hw/virtio/vhost.h | 7 + qemu-options.hx | 12 + 13 files changed, 601 insertions(+), 12 deletions(-) create mode 100644 docs/interop/vhost-vdpa.rst create mode 100644 hw/virtio/vhost-vdpa.c create mode 100644 include/hw/virtio/vhost-vdpa.h diff --git a/configure b/configure index 4a22dcd563..3db7f20185 100755 --- a/configure +++ b/configure @@ -1575,6 +1575,10 @@ for opt do ;; --enable-vhost-user) vhost_user=3D"yes" ;; + --disable-vhost-vdpa) vhost_vdpa=3D"no" + ;; + --enable-vhost-vdpa) vhost_vdpa=3D"yes" + ;; --disable-vhost-kernel) vhost_kernel=3D"no" ;; --enable-vhost-kernel) vhost_kernel=3D"yes" @@ -1883,6 +1887,7 @@ disabled with --disable-FEATURE, default is enabled i= f available: vhost-crypto vhost-user-crypto backend support vhost-kernel vhost kernel backend support vhost-user vhost-user backend support + vhost-vdpa vhost-vdpa kernel backend support spice spice rbd rados block device (rbd) libiscsi iscsi support @@ -2394,6 +2399,10 @@ test "$vhost_user" =3D "" && vhost_user=3Dyes if test "$vhost_user" =3D "yes" && test "$mingw32" =3D "yes"; then error_exit "vhost-user isn't available on win32" fi +test "$vhost_vdpa" =3D "" && vhost_vdpa=3D$linux +if test "$vhost_vdpa" =3D "yes" && test "$linux" !=3D "yes"; then + error_exit "vhost-vdpa is only available on Linux" +fi test "$vhost_kernel" =3D "" && vhost_kernel=3D$linux if test "$vhost_kernel" =3D "yes" && test "$linux" !=3D "yes"; then error_exit "vhost-kernel is only available on Linux" @@ -2422,6 +2431,11 @@ test "$vhost_user_fs" =3D "" && vhost_user_fs=3D$vho= st_user if test "$vhost_user_fs" =3D "yes" && test "$vhost_user" =3D "no"; then error_exit "--enable-vhost-user-fs requires --enable-vhost-user" fi +#vhost-vdpa backends +test "$vhost_net_vdpa" =3D "" && vhost_net_vdpa=3D$vhost_vdpa +if test "$vhost_net_vdpa" =3D "yes" && test "$vhost_vdpa" =3D "no"; then + error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa" +fi =20 # OR the vhost-kernel and vhost-user values for simplicity if test "$vhost_net" =3D ""; then @@ -6936,6 +6950,7 @@ echo "vhost-scsi support $vhost_scsi" echo "vhost-vsock support $vhost_vsock" echo "vhost-user support $vhost_user" echo "vhost-user-fs support $vhost_user_fs" +echo "vhost-vdpa support $vhost_vdpa" echo "Trace backends $trace_backends" if have_backend "simple"; then echo "Trace output file $trace_file-" @@ -7437,6 +7452,9 @@ fi if test "$vhost_net_user" =3D "yes" ; then echo "CONFIG_VHOST_NET_USER=3Dy" >> $config_host_mak fi +if test "$vhost_net_vdpa" =3D "yes" ; then + echo "CONFIG_VHOST_NET_VDPA=3Dy" >> $config_host_mak +fi if test "$vhost_crypto" =3D "yes" ; then echo "CONFIG_VHOST_CRYPTO=3Dy" >> $config_host_mak fi @@ -7452,6 +7470,9 @@ fi if test "$vhost_user" =3D "yes" ; then echo "CONFIG_VHOST_USER=3Dy" >> $config_host_mak fi +if test "$vhost_vdpa" =3D "yes" ; then + echo "CONFIG_VHOST_VDPA=3Dy" >> $config_host_mak +fi if test "$vhost_user_fs" =3D "yes" ; then echo "CONFIG_VHOST_USER_FS=3Dy" >> $config_host_mak fi diff --git a/docs/interop/index.rst b/docs/interop/index.rst index 049387ac6d..006f986420 100644 --- a/docs/interop/index.rst +++ b/docs/interop/index.rst @@ -20,3 +20,4 @@ Contents: qemu-ga vhost-user vhost-user-gpu + vhost-vdpa diff --git a/docs/interop/vhost-vdpa.rst b/docs/interop/vhost-vdpa.rst new file mode 100644 index 0000000000..5a075b8a63 --- /dev/null +++ b/docs/interop/vhost-vdpa.rst @@ -0,0 +1,17 @@ +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D +Vhost-vdpa Protocol +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +Introduction +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D +vDPA(Virtual data path acceleration) device is a device that uses +a datapath which complies with the virtio specifications with vendor +specific control path. vDPA devices can be both physically located on +the hardware or emulated by software. + +This document describes the vDPA support in qemu + +Here is the kernel commit here +https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/= ?id=3D4c8cf31885f69e86be0b5b9e6677a26797365e1d + +TODO : Moreinfo will add later diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 4096d64aaf..cbdf42ace5 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -17,8 +17,10 @@ #include "net/net.h" #include "net/tap.h" #include "net/vhost-user.h" +#include "net/vhost-vdpa.h" =20 #include "standard-headers/linux/vhost_types.h" +#include "linux-headers/linux/vhost.h" #include "hw/virtio/virtio-net.h" #include "net/vhost_net.h" #include "qemu/error-report.h" @@ -33,12 +35,6 @@ #include "hw/virtio/vhost.h" #include "hw/virtio/virtio-bus.h" =20 -struct vhost_net { - struct vhost_dev dev; - struct vhost_virtqueue vqs[2]; - int backend; - NetClientState *nc; -}; =20 /* Features supported by host kernel. */ static const int kernel_feature_bits[] =3D { @@ -96,6 +92,9 @@ static const int *vhost_net_get_feature_bits(struct vhost= _net *net) case NET_CLIENT_DRIVER_VHOST_USER: feature_bits =3D user_feature_bits; break; + case NET_CLIENT_DRIVER_VHOST_VDPA: + feature_bits =3D vdpa_feature_bits; + break; default: error_report("Feature bits not defined for this type: %d", net->nc->info->type); @@ -316,7 +315,6 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *= ncs, } =20 for (i =3D 0; i < total_queues; i++) { - peer =3D qemu_get_peer(ncs, i); net =3D get_vhost_net(peer); vhost_net_set_vq_index(net, i * 2); @@ -337,6 +335,7 @@ int vhost_net_start(VirtIODevice *dev, NetClientState *= ncs, } =20 for (i =3D 0; i < total_queues; i++) { + peer =3D qemu_get_peer(ncs, i); r =3D vhost_net_start_one(get_vhost_net(peer), dev); =20 @@ -433,6 +432,12 @@ VHostNetState *get_vhost_net(NetClientState *nc) vhost_net =3D vhost_user_get_vhost_net(nc); assert(vhost_net); break; +#endif +#ifdef CONFIG_VHOST_NET_VDPA + case NET_CLIENT_DRIVER_VHOST_VDPA: + vhost_net =3D vhost_vdpa_get_vhost_net(nc); + assert(vhost_net); + break; #endif default: break; diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index aff67a92df..6aadc2403a 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -43,6 +43,7 @@ #include "monitor/qdev.h" #include "hw/pci/pci.h" #include "net_rx_pkt.h" +#include "hw/virtio/vhost.h" =20 #define VIRTIO_NET_VM_VERSION 11 =20 @@ -124,7 +125,10 @@ static void virtio_net_get_config(VirtIODevice *vdev, = uint8_t *config) { VirtIONet *n =3D VIRTIO_NET(vdev); struct virtio_net_config netcfg; + int ret =3D 0; + struct vhost_dev *hdev =3D NULL; =20 + memset(&netcfg, 0 , sizeof(struct virtio_net_config)); virtio_stw_p(vdev, &netcfg.status, n->status); virtio_stw_p(vdev, &netcfg.max_virtqueue_pairs, n->max_queues); virtio_stw_p(vdev, &netcfg.mtu, n->net_conf.mtu); @@ -138,21 +142,37 @@ static void virtio_net_get_config(VirtIODevice *vdev,= uint8_t *config) virtio_stl_p(vdev, &netcfg.supported_hash_types, VIRTIO_NET_RSS_SUPPORTED_HASHES); memcpy(config, &netcfg, n->config_size); + + NetClientState *nc =3D qemu_get_queue(n->nic); + if (nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA) { + hdev =3D &(get_vhost_net(nc->peer)->dev); + ret =3D vhost_dev_get_config(hdev, (uint8_t *)&netcfg, n->config_s= ize); + if (ret !=3D -1) { + memcpy(config, &netcfg, n->config_size); + } + } } =20 static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *confi= g) { VirtIONet *n =3D VIRTIO_NET(vdev); struct virtio_net_config netcfg =3D {}; + struct vhost_dev *hdev =3D NULL; =20 memcpy(&netcfg, config, n->config_size); - if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) && !virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1) && memcmp(netcfg.mac, n->mac, ETH_ALEN)) { memcpy(n->mac, netcfg.mac, ETH_ALEN); qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); } + + NetClientState *nc =3D qemu_get_queue(n->nic); + if (nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA) { + hdev =3D &(get_vhost_net(nc->peer)->dev); + vhost_dev_set_config(hdev, (uint8_t *)&netcfg, 0, n->config_size, + VHOST_SET_CONFIG_TYPE_MASTER); + } } =20 static bool virtio_net_started(VirtIONet *n, uint8_t status) diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index 13e75f171f..2b31e9b3dc 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -5,6 +5,7 @@ obj-y +=3D virtio.o obj-$(CONFIG_VHOST) +=3D vhost.o vhost-backend.o common-obj-$(call lnot,$(CONFIG_VHOST)) +=3D vhost-stub.o obj-$(CONFIG_VHOST_USER) +=3D vhost-user.o +obj-$(CONFIG_VHOST_VDPA) +=3D vhost-vdpa.o =20 common-obj-$(CONFIG_VIRTIO_RNG) +=3D virtio-rng.o common-obj-$(CONFIG_VIRTIO_PCI) +=3D virtio-pci.o diff --git a/hw/virtio/vhost-backend.c b/hw/virtio/vhost-backend.c index 48905383f8..b925a2b1ac 100644 --- a/hw/virtio/vhost-backend.c +++ b/hw/virtio/vhost-backend.c @@ -14,7 +14,7 @@ #include "qemu/error-report.h" #include "qemu/main-loop.h" #include "standard-headers/linux/vhost_types.h" - +#include "hw/virtio/vhost-vdpa.h" #ifdef CONFIG_VHOST_KERNEL #include #include @@ -285,6 +285,11 @@ int vhost_set_backend_type(struct vhost_dev *dev, Vhos= tBackendType backend_type) case VHOST_BACKEND_TYPE_USER: dev->vhost_ops =3D &user_ops; break; +#endif +#ifdef CONFIG_VHOST_VDPA + case VHOST_BACKEND_TYPE_VDPA: + dev->vhost_ops =3D &vdpa_ops; + break; #endif default: error_report("Unknown vhost backend type"); diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c new file mode 100644 index 0000000000..25c9b537b0 --- /dev/null +++ b/hw/virtio/vhost-vdpa.c @@ -0,0 +1,469 @@ +/* + * vhost-vdpa + * + * Copyright(c) 2017-2018 Intel Corporation. + * Copyright(c) 2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include +#include +#include +#include +#include "hw/virtio/vhost.h" +#include "hw/virtio/vhost-backend.h" +#include "hw/virtio/virtio-net.h" +#include "hw/virtio/vhost-vdpa.h" +#include "qemu/main-loop.h" +#include +#include "sysemu/kvm.h" + +static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *secti= on) +{ + return (!memory_region_is_ram(section->mr) && + !memory_region_is_iommu(section->mr)) || + /* + * Sizing an enabled 64-bit BAR can cause spurious mappings to + * addresses in the upper part of the 64-bit address space. Th= ese + * are never accessed by the CPU and beyond the address width of + * some IOMMU hardware. TODO: VDPA should tell us the IOMMU wi= dth. + */ + section->offset_within_address_space & (1ULL << 63); +} + +static int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr si= ze, + void *vaddr, bool readonly) +{ + struct vhost_msg_v2 msg; + int fd =3D v->device_fd; + int ret =3D 0; + + msg.type =3D v->msg_type; + msg.iotlb.iova =3D iova; + msg.iotlb.size =3D size; + msg.iotlb.uaddr =3D (uint64_t)vaddr; + msg.iotlb.perm =3D readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW; + msg.iotlb.type =3D VHOST_IOTLB_UPDATE; + + if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { + error_report("failed to write, fd=3D%d, errno=3D%d (%s)", + fd, errno, strerror(errno)); + return -EIO ; + } + + return ret; +} + +static int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, + hwaddr size) +{ + struct vhost_msg_v2 msg; + int fd =3D v->device_fd; + int ret =3D 0; + + msg.type =3D v->msg_type; + msg.iotlb.iova =3D iova; + msg.iotlb.size =3D size; + msg.iotlb.type =3D VHOST_IOTLB_INVALIDATE; + + if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { + error_report("failed to write, fd=3D%d, errno=3D%d (%s)", + fd, errno, strerror(errno)); + return -EIO ; + } + + return ret; +} + +static void vhost_vdpa_listener_region_add(MemoryListener *listener, + MemoryRegionSection *section) +{ + struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + hwaddr iova; + Int128 llend, llsize; + void *vaddr; + int ret; + + if (vhost_vdpa_listener_skipped_section(section)) { + return; + } + + if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK= ) !=3D + (section->offset_within_region & ~TARGET_PAGE_MASK))) { + error_report("%s received unaligned region", __func__); + return; + } + + iova =3D TARGET_PAGE_ALIGN(section->offset_within_address_space); + llend =3D int128_make64(section->offset_within_address_space); + llend =3D int128_add(llend, section->size); + llend =3D int128_and(llend, int128_exts64(TARGET_PAGE_MASK)); + + if (int128_ge(int128_make64(iova), llend)) { + return; + } + + memory_region_ref(section->mr); + + /* Here we assume that memory_region_is_ram(section->mr)=3D=3Dtrue */ + + vaddr =3D memory_region_get_ram_ptr(section->mr) + + section->offset_within_region + + (iova - section->offset_within_address_space); + + llsize =3D int128_sub(llend, int128_make64(iova)); + + ret =3D vhost_vdpa_dma_map(v, iova, int128_get64(llsize), + vaddr, section->readonly); + if (ret) { + error_report("vhost vdpa map fail!"); + if (memory_region_is_ram_device(section->mr)) { + /* Allow unexpected mappings not to be fatal for RAM devices */ + error_report("map ram fail!"); + return ; + } + goto fail; + } + + return; + +fail: + if (memory_region_is_ram_device(section->mr)) { + error_report("failed to vdpa_dma_map. pci p2p may not work"); + return; + + } + /* + * On the initfn path, store the first error in the container so we + * can gracefully fail. Runtime, there's not much we can do other + * than throw a hardware error. + */ + error_report("vhost-vdpa: DMA mapping failed, unable to continue"); + return; + +} + +static void vhost_vdpa_listener_region_del(MemoryListener *listener, + MemoryRegionSection *section) +{ + struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + hwaddr iova; + Int128 llend, llsize; + int ret; + bool try_unmap =3D true; + + if (vhost_vdpa_listener_skipped_section(section)) { + return; + } + + if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK= ) !=3D + (section->offset_within_region & ~TARGET_PAGE_MASK))) { + error_report("%s received unaligned region", __func__); + return; + } + + iova =3D TARGET_PAGE_ALIGN(section->offset_within_address_space); + llend =3D int128_make64(section->offset_within_address_space); + llend =3D int128_add(llend, section->size); + llend =3D int128_and(llend, int128_exts64(TARGET_PAGE_MASK)); + + if (int128_ge(int128_make64(iova), llend)) { + return; + } + + llsize =3D int128_sub(llend, int128_make64(iova)); + + if (try_unmap) { + ret =3D vhost_vdpa_dma_unmap(v, iova, int128_get64(llsize)); + if (ret) { + error_report("vhost_vdpa dma unmap error!"); + } + } + + memory_region_unref(section->mr); +} +/* + * IOTLB API is used by vhost-vpda which requires incremental updating + * of the mapping. So we can not use generic vhost memory listener which + * depends on the addnop(). + */ +static const MemoryListener vhost_vdpa_memory_listener =3D { + .region_add =3D vhost_vdpa_listener_region_add, + .region_del =3D vhost_vdpa_listener_region_del, +}; + +static int vhost_vdpa_call(struct vhost_dev *dev, unsigned long int reques= t, + void *arg) +{ + struct vhost_vdpa *v =3D dev->opaque; + int fd =3D v->device_fd; + + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); + + return ioctl(fd, request, arg); +} + +static void vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status) +{ + uint8_t s; + + if (vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &s)) { + return; + } + + s |=3D status; + + vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &s); +} + +static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque) +{ + struct vhost_vdpa *v; + uint64_t features; + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); + + v =3D opaque; + dev->opaque =3D opaque ; + vhost_vdpa_call(dev, VHOST_GET_FEATURES, &features); + dev->backend_features =3D features; + v->listener =3D vhost_vdpa_memory_listener; + v->msg_type =3D VHOST_IOTLB_MSG_V2; + + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | + VIRTIO_CONFIG_S_DRIVER); + + return 0; +} + +static int vhost_vdpa_cleanup(struct vhost_dev *dev) +{ + struct vhost_vdpa *v; + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); + v =3D dev->opaque; + memory_listener_unregister(&v->listener); + + dev->opaque =3D NULL; + return 0; +} + +static int vhost_vdpa_memslots_limit(struct vhost_dev *dev) +{ + return INT_MAX; +} + +static int vhost_vdpa_set_mem_table(struct vhost_dev *dev, + struct vhost_memory *mem) +{ + + if (mem->padding) { + return -1; + } + + return 0; +} + +static int vhost_vdpa_set_features(struct vhost_dev *dev, + uint64_t features) +{ + int ret; + ret =3D vhost_vdpa_call(dev, VHOST_SET_FEATURES, &features); + uint8_t status =3D 0; + if (ret) { + return ret; + } + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); + vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); + + return !(status & VIRTIO_CONFIG_S_FEATURES_OK); +} + +int vhost_vdpa_get_device_id(struct vhost_dev *dev, + uint32_t *device_id) +{ + return vhost_vdpa_call(dev, VHOST_VDPA_GET_DEVICE_ID, device_id); +} + +static int vhost_vdpa_reset_device(struct vhost_dev *dev) +{ + uint8_t status =3D 0; + + return vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &status); +} + +static int vhost_vdpa_get_vq_index(struct vhost_dev *dev, int idx) +{ + assert(idx >=3D dev->vq_index && idx < dev->vq_index + dev->nvqs); + + return idx - dev->vq_index; +} + +static int vhost_vdpa_set_vring_ready(struct vhost_dev *dev) +{ + int i; + for (i =3D 0; i < dev->nvqs; ++i) { + struct vhost_vring_state state =3D { + .index =3D dev->vq_index + i, + .num =3D 1, + }; + vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state); + } + return 0; +} + +static int vhost_vdpa_set_config(struct vhost_dev *dev, const uint8_t *dat= a, + uint32_t offset, uint32_t size, + uint32_t flags) +{ + struct vhost_vdpa_config *config; + int ret; + unsigned long config_size =3D offsetof(struct vhost_vdpa_config, buf); + config =3D g_malloc(size + config_size); + if (config =3D=3D NULL) { + return -1; + } + config->off =3D offset; + config->len =3D size; + memcpy(config->buf, data, size); + ret =3D vhost_vdpa_call(dev, VHOST_VDPA_SET_CONFIG, config); + g_free(config); + return ret; +} + +static int vhost_vdpa_get_config(struct vhost_dev *dev, uint8_t *config, + uint32_t config_len) +{ + struct vhost_vdpa_config *v_config; + unsigned long config_size =3D offsetof(struct vhost_vdpa_config, buf); + int ret; + + v_config =3D g_malloc(config_len + config_size); + if (v_config =3D=3D NULL) { + return -1; + } + v_config->len =3D config_len; + v_config->off =3D 0; + ret =3D vhost_vdpa_call(dev, VHOST_VDPA_GET_CONFIG, v_config); + memcpy(config, v_config->buf, config_len); + g_free(v_config); + return ret; + } + +static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) +{ + struct vhost_vdpa *v =3D dev->opaque; + if (started) { + uint8_t status =3D 0; + memory_listener_register(&v->listener, &address_space_memory); + vhost_vdpa_set_vring_ready(dev); + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); + vhost_vdpa_call(dev, VHOST_VDPA_GET_STATUS, &status); + + return !(status & VIRTIO_CONFIG_S_DRIVER_OK); + } else { + vhost_vdpa_reset_device(dev); + vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | + VIRTIO_CONFIG_S_DRIVER); + memory_listener_unregister(&v->listener); + + return 0; + } +} + +static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base, + struct vhost_log *log) +{ + return vhost_vdpa_call(dev, VHOST_SET_LOG_BASE, &base); +} + +static int vhost_vdpa_set_vring_addr(struct vhost_dev *dev, + struct vhost_vring_addr *addr) +{ + return vhost_vdpa_call(dev, VHOST_SET_VRING_ADDR, addr); +} + +static int vhost_vdpa_set_vring_num(struct vhost_dev *dev, + struct vhost_vring_state *ring) +{ + return vhost_vdpa_call(dev, VHOST_SET_VRING_NUM, ring); +} + +static int vhost_vdpa_set_vring_base(struct vhost_dev *dev, + struct vhost_vring_state *ring) +{ + return vhost_vdpa_call(dev, VHOST_SET_VRING_BASE, ring); +} + +static int vhost_vdpa_get_vring_base(struct vhost_dev *dev, + struct vhost_vring_state *ring) +{ + return vhost_vdpa_call(dev, VHOST_GET_VRING_BASE, ring); +} + +static int vhost_vdpa_set_vring_kick(struct vhost_dev *dev, + struct vhost_vring_file *file) +{ + return vhost_vdpa_call(dev, VHOST_SET_VRING_KICK, file); +} + +static int vhost_vdpa_set_vring_call(struct vhost_dev *dev, + struct vhost_vring_file *file) +{ + return vhost_vdpa_call(dev, VHOST_SET_VRING_CALL, file); +} + +static int vhost_vdpa_get_features(struct vhost_dev *dev, + uint64_t *features) +{ + return vhost_vdpa_call(dev, VHOST_GET_FEATURES, features); +} + +static int vhost_vdpa_set_owner(struct vhost_dev *dev) +{ + return vhost_vdpa_call(dev, VHOST_SET_OWNER, NULL); +} + +static int vhost_vdpa_vq_get_addr(struct vhost_dev *dev, + struct vhost_vring_addr *addr, struct vhost_virtqueue = *vq) +{ + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); + addr->desc_user_addr =3D (uint64_t)(unsigned long)vq->desc_phys; + addr->avail_user_addr =3D (uint64_t)(unsigned long)vq->avail_phys; + addr->used_user_addr =3D (uint64_t)(unsigned long)vq->used_phys; + return 0; +} + +const VhostOps vdpa_ops =3D { + .backend_type =3D VHOST_BACKEND_TYPE_VDPA, + .vhost_backend_init =3D vhost_vdpa_init, + .vhost_backend_cleanup =3D vhost_vdpa_cleanup, + .vhost_set_log_base =3D vhost_vdpa_set_log_base, + .vhost_set_vring_addr =3D vhost_vdpa_set_vring_addr, + .vhost_set_vring_num =3D vhost_vdpa_set_vring_num, + .vhost_set_vring_base =3D vhost_vdpa_set_vring_base, + .vhost_get_vring_base =3D vhost_vdpa_get_vring_base, + .vhost_set_vring_kick =3D vhost_vdpa_set_vring_kick, + .vhost_set_vring_call =3D vhost_vdpa_set_vring_call, + .vhost_get_features =3D vhost_vdpa_get_features, + .vhost_set_owner =3D vhost_vdpa_set_owner, + .vhost_set_vring_endian =3D NULL, + .vhost_backend_memslots_limit =3D vhost_vdpa_memslots_limit, + .vhost_set_mem_table =3D vhost_vdpa_set_mem_table, + .vhost_set_features =3D vhost_vdpa_set_features, + .vhost_reset_device =3D vhost_vdpa_reset_device, + .vhost_get_vq_index =3D vhost_vdpa_get_vq_index, + .vhost_get_config =3D vhost_vdpa_get_config, + .vhost_set_config =3D vhost_vdpa_set_config, + .vhost_requires_shm_log =3D NULL, + .vhost_migration_done =3D NULL, + .vhost_backend_can_merge =3D NULL, + .vhost_net_set_mtu =3D NULL, + .vhost_set_iotlb_callback =3D NULL, + .vhost_send_device_iotlb_msg =3D NULL, + .vhost_dev_start =3D vhost_vdpa_dev_start, + .vhost_get_device_id =3D vhost_vdpa_get_device_id, + .vhost_vq_get_addr =3D vhost_vdpa_vq_get_addr, +}; diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 1e083a8976..bcaa66e0d2 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -808,7 +808,9 @@ static int vhost_dev_set_features(struct vhost_dev *dev, features |=3D 0x1ULL << VHOST_F_LOG_ALL; } if (!vhost_dev_has_iommu(dev)) { - features &=3D ~(0x1ULL << VIRTIO_F_IOMMU_PLATFORM); + if (dev->vhost_ops->backend_type !=3D VHOST_BACKEND_TYPE_VDPA) { + features &=3D ~(0x1ULL << VIRTIO_F_IOMMU_PLATFORM); + } } r =3D dev->vhost_ops->vhost_set_features(dev, features); if (r < 0) { @@ -1701,9 +1703,10 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODe= vice *vdev) goto fail_log; } } + if (vhost_dev_has_iommu(hdev) && hdev->vhost_ops->vhost_set_iotlb_callback) { - hdev->vhost_ops->vhost_set_iotlb_callback(hdev, true); + hdev->vhost_ops->vhost_set_iotlb_callback(hdev, true); =20 /* Update used ring information for IOTLB to work correctly, * vhost-kernel code requires for this.*/ diff --git a/include/hw/virtio/vhost-backend.h b/include/hw/virtio/vhost-ba= ckend.h index bfc24207e2..01f7c0d46f 100644 --- a/include/hw/virtio/vhost-backend.h +++ b/include/hw/virtio/vhost-backend.h @@ -17,7 +17,8 @@ typedef enum VhostBackendType { VHOST_BACKEND_TYPE_NONE =3D 0, VHOST_BACKEND_TYPE_KERNEL =3D 1, VHOST_BACKEND_TYPE_USER =3D 2, - VHOST_BACKEND_TYPE_MAX =3D 3, + VHOST_BACKEND_TYPE_VDPA =3D 3, + VHOST_BACKEND_TYPE_MAX =3D 4, } VhostBackendType; =20 typedef enum VhostSetConfigType { @@ -167,6 +168,7 @@ typedef struct VhostOps { } VhostOps; =20 extern const VhostOps user_ops; +extern const VhostOps vdpa_ops; =20 int vhost_set_backend_type(struct vhost_dev *dev, VhostBackendType backend_type); diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h new file mode 100644 index 0000000000..6455663388 --- /dev/null +++ b/include/hw/virtio/vhost-vdpa.h @@ -0,0 +1,26 @@ +/* + * vhost-vdpa.h + * + * Copyright(c) 2017-2018 Intel Corporation. + * Copyright(c) 2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef HW_VIRTIO_VHOST_VDPA_H +#define HW_VIRTIO_VHOST_VDPA_H + +#include "hw/virtio/virtio.h" + +typedef struct vhost_vdpa { + int device_fd; + uint32_t msg_type; + MemoryListener listener; +} VhostVDPA; + +extern AddressSpace address_space_memory; +extern int vhost_vdpa_get_device_id(struct vhost_dev *dev, + uint32_t *device_id); +#endif diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 085450c6f8..767a95ec0b 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -92,6 +92,13 @@ struct vhost_dev { const VhostDevConfigOps *config_ops; }; =20 +struct vhost_net { + struct vhost_dev dev; + struct vhost_virtqueue vqs[2]; + int backend; + NetClientState *nc; +}; + int vhost_dev_init(struct vhost_dev *hdev, void *opaque, VhostBackendType backend_type, uint32_t busyloop_timeout); diff --git a/qemu-options.hx b/qemu-options.hx index 196f468786..fa1b19de4c 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2418,6 +2418,10 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, #ifdef CONFIG_POSIX "-netdev vhost-user,id=3Dstr,chardev=3Ddev[,vhostforce=3Don|off]\n" " configure a vhost-user network, backed by a chardev '= dev'\n" +#endif +#ifdef __linux__ + "-netdev vhost-vdpa,id=3Dstr,vhostdev=3D/path/to/dev\n" + " configure a vhost-vdpa network,Establish a vhost-vdpa= netdev\n" #endif "-netdev hubport,id=3Dstr,hubid=3Dn[,netdev=3Dnd]\n" " configure a hub port on the hub with ID 'n'\n", QEMU_= ARCH_ALL) @@ -2897,6 +2901,14 @@ SRST -netdev type=3Dvhost-user,id=3Dnet0,chardev=3Dchr0 \ -device virtio-net-pci,netdev=3Dnet0 =20 +``-netdev vhost-vdpa,vhostdev=3D/path/to/dev`` + Establish a vhost-vdpa netdev. + + vDPA device is a device that uses a datapath which complies with + the virtio specifications with a vendor specific control path. + vDPA devices can be both physically located on the hardware or + emulated by software. + ``-netdev hubport,id=3Did,hubid=3Dhubid[,netdev=3Dnd]`` Create a hub port on the emulated hub with ID hubid. =20 --=20 2.21.1 From nobody Sun May 19 01:15:32 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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charset="utf-8" This patch set introduces a new net client type: vhost-vdpa. vhost-vdpa net client will set up a vDPA device which is specified by a "vhostdev" parameter. Signed-off-by: Lingshan Zhu Signed-off-by: Tiwei Bie Signed-off-by: Cindy Lu --- include/net/vhost-vdpa.h | 22 ++++ net/Makefile.objs | 2 +- net/clients.h | 2 + net/net.c | 3 + net/vhost-vdpa.c | 228 +++++++++++++++++++++++++++++++++++++++ qapi/net.json | 28 ++++- 6 files changed, 281 insertions(+), 4 deletions(-) create mode 100644 include/net/vhost-vdpa.h create mode 100644 net/vhost-vdpa.c diff --git a/include/net/vhost-vdpa.h b/include/net/vhost-vdpa.h new file mode 100644 index 0000000000..45e34b7cfc --- /dev/null +++ b/include/net/vhost-vdpa.h @@ -0,0 +1,22 @@ +/* + * vhost-vdpa.h + * + * Copyright(c) 2017-2018 Intel Corporation. + * Copyright(c) 2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef VHOST_VDPA_H +#define VHOST_VDPA_H + +#define TYPE_VHOST_VDPA "vhost-vdpa" + +struct vhost_net *vhost_vdpa_get_vhost_net(NetClientState *nc); +uint64_t vhost_vdpa_get_acked_features(NetClientState *nc); + +extern const int vdpa_feature_bits[]; + +#endif /* VHOST_VDPA_H */ diff --git a/net/Makefile.objs b/net/Makefile.objs index c5d076d19c..5ab45545db 100644 --- a/net/Makefile.objs +++ b/net/Makefile.objs @@ -26,7 +26,7 @@ tap-obj-$(CONFIG_SOLARIS) =3D tap-solaris.o tap-obj-y ?=3D tap-stub.o common-obj-$(CONFIG_POSIX) +=3D tap.o $(tap-obj-y) common-obj-$(CONFIG_WIN32) +=3D tap-win32.o - +common-obj-$(CONFIG_VHOST_NET_VDPA) +=3D vhost-vdpa.o vde.o-libs =3D $(VDE_LIBS) =20 common-obj-$(CONFIG_CAN_BUS) +=3D can/ diff --git a/net/clients.h b/net/clients.h index a6ef267e19..92f9b59aed 100644 --- a/net/clients.h +++ b/net/clients.h @@ -61,4 +61,6 @@ int net_init_netmap(const Netdev *netdev, const char *nam= e, int net_init_vhost_user(const Netdev *netdev, const char *name, NetClientState *peer, Error **errp); =20 +int net_init_vhost_vdpa(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp); #endif /* QEMU_NET_CLIENTS_H */ diff --git a/net/net.c b/net/net.c index 9099a327dd..94dc546fb2 100644 --- a/net/net.c +++ b/net/net.c @@ -966,6 +966,9 @@ static int (* const net_client_init_fun[NET_CLIENT_DRIV= ER__MAX])( #ifdef CONFIG_VHOST_NET_USER [NET_CLIENT_DRIVER_VHOST_USER] =3D net_init_vhost_user, #endif +#ifdef CONFIG_VHOST_NET_VDPA + [NET_CLIENT_DRIVER_VHOST_VDPA] =3D net_init_vhost_vdpa, +#endif #ifdef CONFIG_L2TPV3 [NET_CLIENT_DRIVER_L2TPV3] =3D net_init_l2tpv3, #endif diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c new file mode 100644 index 0000000000..bc0e0d2d35 --- /dev/null +++ b/net/vhost-vdpa.c @@ -0,0 +1,228 @@ +/* + * vhost-vdpa.c + * + * Copyright(c) 2017-2018 Intel Corporation. + * Copyright(c) 2020 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "clients.h" +#include "net/vhost_net.h" +#include "net/vhost-vdpa.h" +#include "hw/virtio/vhost-vdpa.h" +#include "qemu/config-file.h" +#include "qemu/error-report.h" +#include "qemu/option.h" +#include "qapi/error.h" +#include +#include +#include "standard-headers/linux/virtio_net.h" +#include "monitor/monitor.h" +#include "hw/virtio/vhost.h" + +/* Todo:need to add the multiqueue support here */ +typedef struct VhostVDPAState { + NetClientState nc; + struct vhost_vdpa vhost_vdpa; + VHostNetState *vhost_net; + uint64_t acked_features; + bool started; +} VhostVDPAState; + +const int vdpa_feature_bits[] =3D { + VIRTIO_F_NOTIFY_ON_EMPTY, + VIRTIO_RING_F_INDIRECT_DESC, + VIRTIO_RING_F_EVENT_IDX, + VIRTIO_F_ANY_LAYOUT, + VIRTIO_F_VERSION_1, + VIRTIO_NET_F_CSUM, + VIRTIO_NET_F_GUEST_CSUM, + VIRTIO_NET_F_GSO, + VIRTIO_NET_F_GUEST_TSO4, + VIRTIO_NET_F_GUEST_TSO6, + VIRTIO_NET_F_GUEST_ECN, + VIRTIO_NET_F_GUEST_UFO, + VIRTIO_NET_F_HOST_TSO4, + VIRTIO_NET_F_HOST_TSO6, + VIRTIO_NET_F_HOST_ECN, + VIRTIO_NET_F_HOST_UFO, + VIRTIO_NET_F_MRG_RXBUF, + VIRTIO_NET_F_MTU, + VIRTIO_F_IOMMU_PLATFORM, + VIRTIO_F_RING_PACKED, + VIRTIO_NET_F_GUEST_ANNOUNCE, + VHOST_INVALID_FEATURE_BIT +}; + +VHostNetState *vhost_vdpa_get_vhost_net(NetClientState *nc) +{ + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + return s->vhost_net; +} + +uint64_t vhost_vdpa_get_acked_features(NetClientState *nc) +{ + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + s->acked_features =3D vhost_net_get_acked_features(s->vhost_net); + + return s->acked_features; +} + +static int vhost_vdpa_net_check_device_id(struct vhost_net *net) +{ + uint32_t device_id; + int ret; + struct vhost_dev *hdev; + + hdev =3D (struct vhost_dev *)&net->dev; + ret =3D hdev->vhost_ops->vhost_get_device_id(hdev, &device_id); + if (device_id !=3D VIRTIO_ID_NET) { + return -ENOTSUP; + } + return ret; +} + +static void vhost_vdpa_del(NetClientState *ncs) +{ + VhostVDPAState *s; + assert(ncs->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + s =3D DO_UPCAST(VhostVDPAState, nc, ncs); + if (s->vhost_net) { + vhost_net_cleanup(s->vhost_net); + } +} + +static int vhost_vdpa_add(NetClientState *ncs, void *be) +{ + VhostNetOptions options; + struct vhost_net *net =3D NULL; + VhostVDPAState *s; + int ret; + + options.backend_type =3D VHOST_BACKEND_TYPE_VDPA; + assert(ncs->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + s =3D DO_UPCAST(VhostVDPAState, nc, ncs); + options.net_backend =3D ncs; + options.opaque =3D be; + options.busyloop_timeout =3D 0; + + net =3D vhost_net_init(&options); + if (!net) { + error_report("failed to init vhost_net for queue"); + goto err; + } + if (s->vhost_net) { + vhost_net_cleanup(s->vhost_net); + g_free(s->vhost_net); + } + s->vhost_net =3D net; + ret =3D vhost_vdpa_net_check_device_id(net); + if (ret) { + goto err; + } + return 0; +err: + if (net) { + vhost_net_cleanup(net); + } + vhost_vdpa_del(ncs); + return -1; +} + +static void vhost_vdpa_cleanup(NetClientState *nc) +{ + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + + if (s->vhost_net) { + vhost_net_cleanup(s->vhost_net); + g_free(s->vhost_net); + s->vhost_net =3D NULL; + } +} + +static bool vhost_vdpa_has_vnet_hdr(NetClientState *nc) +{ + assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + + return true; +} + +static bool vhost_vdpa_has_ufo(NetClientState *nc) +{ + assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + uint64_t features =3D 0; + features |=3D (1ULL << VIRTIO_NET_F_HOST_UFO); + features =3D vhost_net_get_features(s->vhost_net, features); + return !!(features & (1ULL << VIRTIO_NET_F_HOST_UFO)); + +} + +static NetClientInfo net_vhost_vdpa_info =3D { + .type =3D NET_CLIENT_DRIVER_VHOST_VDPA, + .size =3D sizeof(VhostVDPAState), + .cleanup =3D vhost_vdpa_cleanup, + .has_vnet_hdr =3D vhost_vdpa_has_vnet_hdr, + .has_ufo =3D vhost_vdpa_has_ufo, +}; + +static int net_vhost_vdpa_init(NetClientState *peer, const char *device, + const char *name, const char *vhostdev) +{ + NetClientState *nc =3D NULL; + VhostVDPAState *s; + int vdpa_device_fd =3D -1; + int ret =3D 0; + assert(name); + nc =3D qemu_new_net_client(&net_vhost_vdpa_info, peer, device, name); + snprintf(nc->info_str, sizeof(nc->info_str), TYPE_VHOST_VDPA); + nc->queue_index =3D 0; + s =3D DO_UPCAST(VhostVDPAState, nc, nc); + vdpa_device_fd =3D qemu_open(vhostdev, O_RDWR); + if (vdpa_device_fd =3D=3D -1) { + return -errno; + } + s->vhost_vdpa.device_fd =3D vdpa_device_fd; + ret =3D vhost_vdpa_add(nc, (void *)&s->vhost_vdpa); + assert(s->vhost_net); + return ret; +} + +static int net_vhost_check_net(void *opaque, QemuOpts *opts, Error **errp) +{ + const char *name =3D opaque; + const char *driver, *netdev; + + driver =3D qemu_opt_get(opts, "driver"); + netdev =3D qemu_opt_get(opts, "netdev"); + if (!driver || !netdev) { + return 0; + } + if (strcmp(netdev, name) =3D=3D 0 && + !g_str_has_prefix(driver, "virtio-net-")) { + error_setg(errp, "vhost-vdpa requires frontend driver virtio-net-*= "); + return -1; + } + return 0; +} + +int net_init_vhost_vdpa(const Netdev *netdev, const char *name, + NetClientState *peer, Error **errp) +{ + const NetdevVhostVDPAOptions *opts; + + assert(netdev->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); + opts =3D &netdev->u.vhost_vdpa; + /* verify net frontend */ + if (qemu_opts_foreach(qemu_find_opts("device"), net_vhost_check_net, + (char *)name, errp)) { + return -1; + } + return net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, opts->vhostdev= ); +} diff --git a/qapi/net.json b/qapi/net.json index 9244c9af56..00fc915640 100644 --- a/qapi/net.json +++ b/qapi/net.json @@ -428,16 +428,37 @@ '*vhostforce': 'bool', '*queues': 'int' } } =20 +## +# @NetdevVhostVDPAOptions: +# +# Vhost-vdpa network backend +# +# vDPA device is a device that uses a datapath which complies with the vir= tio +# specifications with a vendor specific control path. +# +# @vhostdev: path of vhost-vdpa device +# (default:'/dev/vhost-vdpa-0') +# +# @queues: number of queues to be created for multiqueue vhost-vdpa +# (default: 1) +# +# Since: 5.1 +## +{ 'struct': 'NetdevVhostVDPAOptions', + 'data': { + '*vhostdev': 'str', + '*queues': 'int' } } + ## # @NetClientDriver: # # Available netdev drivers. # -# Since: 2.7 +# Since: 5.1 ## { 'enum': 'NetClientDriver', 'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'vde', - 'bridge', 'hubport', 'netmap', 'vhost-user' ] } + 'bridge', 'hubport', 'netmap', 'vhost-user', 'vhost-vdpa' ] } =20 ## # @Netdev: @@ -465,7 +486,8 @@ 'bridge': 'NetdevBridgeOptions', 'hubport': 'NetdevHubPortOptions', 'netmap': 'NetdevNetmapOptions', - 'vhost-user': 'NetdevVhostUserOptions' } } + 'vhost-user': 'NetdevVhostUserOptions', + 'vhost-vdpa': 'NetdevVhostVDPAOptions' } } =20 ## # @NetFilterDirection: --=20 2.21.1