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Subject: [RESEND Patch v1 01/37] vhost-pci-net: the fundamental vhost-pci-net device emulation
This patch introduces the fundamental parts of the device emulation. Signed-off-by: Wei Wang <wei.w.wang@intel.com> --- hw/net/Makefile.objs | 2 +- hw/net/vhost-pci-net.c | 138 +++++++++++++++++++++++++ include/hw/virtio/vhost-pci-net.h | 36 +++++++ include/standard-headers/linux/vhost_pci_net.h | 43 ++++++++ include/standard-headers/linux/virtio_ids.h | 29 +++--- 5 files changed, 233 insertions(+), 15 deletions(-) create mode 100644 hw/net/vhost-pci-net.c create mode 100644 include/hw/virtio/vhost-pci-net.h create mode 100644 include/standard-headers/linux/vhost_pci_net.h diff --git a/hw/net/Makefile.objs b/hw/net/Makefile.objs index 610ed3e..71d6d2e 100644 --- a/hw/net/Makefile.objs +++ b/hw/net/Makefile.objs @@ -33,7 +33,7 @@ obj-$(CONFIG_MILKYMIST) += milkymist-minimac2.o obj-$(CONFIG_PSERIES) += spapr_llan.o obj-$(CONFIG_XILINX_ETHLITE) += xilinx_ethlite.o -obj-$(CONFIG_VIRTIO) += virtio-net.o +obj-$(CONFIG_VIRTIO) += virtio-net.o vhost-pci-net.o obj-y += vhost_net.o obj-$(CONFIG_ETSEC) += fsl_etsec/etsec.o fsl_etsec/registers.o \ diff --git a/hw/net/vhost-pci-net.c b/hw/net/vhost-pci-net.c new file mode 100644 index 0000000..b9141fd --- /dev/null +++ b/hw/net/vhost-pci-net.c @@ -0,0 +1,138 @@ +/* + * vhost-pci-net support + * + * Copyright Intel, Inc. 2016 + * + * Authors: + * Wei Wang <wei.w.wang@intel.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ + +#include "qemu/osdep.h" +#include "hw/virtio/virtio-access.h" +#include "hw/virtio/vhost-pci-net.h" + +#define VPNET_CQ_SIZE 32 +#define VPNET_RQ_SIZE 256 + +static void vpnet_handle_rq(VirtIODevice *vdev, VirtQueue *vq) +{ +} + +static void vpnet_handle_crq(VirtIODevice *vdev, VirtQueue *vq) +{ +} + +static void vpnet_set_status(struct VirtIODevice *vdev, uint8_t status) +{ +} + +static uint64_t vpnet_get_features(VirtIODevice *vdev, uint64_t features, + Error **errp) +{ + VhostPCINet *vpnet = VHOST_PCI_NET(vdev); + + return vpnet->device_features; +} + +static void vpnet_set_features(VirtIODevice *vdev, uint64_t features) +{ +} + +static void vpnet_get_config(VirtIODevice *vdev, uint8_t *config) +{ + VhostPCINet *vpnet = VHOST_PCI_NET(vdev); + struct vhost_pci_net_config netcfg; + + virtio_stw_p(vdev, &netcfg.status, vpnet->status); + virtio_stw_p(vdev, &netcfg.peer_vq_num, vpnet->peer_vq_num); + memcpy(config, &netcfg, vpnet->config_size); +} + +static void vpnet_set_config(VirtIODevice *vdev, const uint8_t *config) +{ +} + +static void vpnet_device_realize(DeviceState *dev, Error **errp) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VhostPCINet *vpnet = VHOST_PCI_NET(vdev); + uint16_t i, rq_num = vpnet->peer_vq_num / 2; + + virtio_init(vdev, "vhost-pci-net", VIRTIO_ID_VHOST_PCI_NET, + vpnet->config_size); + + /* control receive quque: host to guest */ + vpnet->crq = virtio_add_queue(vdev, VPNET_CQ_SIZE, vpnet_handle_crq); + /* datapath receive queue */ + vpnet->rqs = g_malloc0(sizeof(VirtQueue *) * rq_num); + for (i = 0; i < rq_num; i++) { + vpnet->rqs[i] = virtio_add_queue(vdev, VPNET_RQ_SIZE, + vpnet_handle_rq); + } + vpnet->status = 0; +} + +static void vpnet_device_unrealize(DeviceState *dev, Error **errp) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VhostPCINet *vpnet = VHOST_PCI_NET(vdev); + uint16_t i, rq_num = vpnet->peer_vq_num / 2; + + for (i = 0; i < rq_num + 2; i++) { + virtio_del_queue(vdev, i); + } + + g_free(vpnet->rqs); +} + +static Property vpnet_properties[] = { + DEFINE_PROP_END_OF_LIST(), +}; + +static void vpnet_instance_init(Object *obj) +{ + VhostPCINet *vpnet = VHOST_PCI_NET(obj); + + /* + * The default config_size is sizeof(struct vhost_pci_net_config). + * Can be overriden with vpnet_set_config_size. + */ + vpnet->config_size = sizeof(struct vhost_pci_net_config); +} + +static void vpnet_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + + dc->props = vpnet_properties; + set_bit(DEVICE_CATEGORY_NETWORK, dc->categories); + vdc->realize = vpnet_device_realize; + vdc->unrealize = vpnet_device_unrealize; + vdc->get_config = vpnet_get_config; + vdc->set_config = vpnet_set_config; + vdc->get_features = vpnet_get_features; + vdc->set_features = vpnet_set_features; + vdc->set_status = vpnet_set_status; +} + +static const TypeInfo vpnet_info = { + .name = TYPE_VHOST_PCI_NET, + .parent = TYPE_VIRTIO_DEVICE, + .instance_size = sizeof(VhostPCINet), + .instance_init = vpnet_instance_init, + .class_init = vpnet_class_init, +}; + +static void virtio_register_types(void) +{ + type_register_static(&vpnet_info); +} + +type_init(virtio_register_types) diff --git a/include/hw/virtio/vhost-pci-net.h b/include/hw/virtio/vhost-pci-net.h new file mode 100644 index 0000000..8f2e65f --- /dev/null +++ b/include/hw/virtio/vhost-pci-net.h @@ -0,0 +1,36 @@ +/* + * Virtio Network Device + * + * Copyright Intel, Corp. 2016 + * + * Authors: + * Wei Wang <wei.w.wang@intel.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + */ + +#ifndef _QEMU_VHOST_PCI_NET_H +#define _QEMU_VHOST_PCI_NET_H + +#include "standard-headers/linux/vhost_pci_net.h" +#include "hw/virtio/virtio.h" + +#define TYPE_VHOST_PCI_NET "vhost-pci-net-device" +#define VHOST_PCI_NET(obj) \ + OBJECT_CHECK(VhostPCINet, (obj), TYPE_VHOST_PCI_NET) + +typedef struct VhostPCINet { + VirtIODevice parent_obj; + /* Control receiveq: msg from host to guest */ + VirtQueue *crq; + /* Datapath receiveq */ + VirtQueue **rqs; + uint16_t status; + uint16_t peer_vq_num; + size_t config_size; + uint64_t device_features; +} VhostPCINet; + +#endif diff --git a/include/standard-headers/linux/vhost_pci_net.h b/include/standard-headers/linux/vhost_pci_net.h new file mode 100644 index 0000000..bac293f --- /dev/null +++ b/include/standard-headers/linux/vhost_pci_net.h @@ -0,0 +1,43 @@ +#ifndef _LINUX_VHOST_PCI_NET_H +#define _LINUX_VHOST_PCI_NET_H + +/* This header is BSD licensed so anyone can use the definitions to implement + * compatible drivers/servers. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Intel nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL Intel OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. */ + +#include "standard-headers/linux/virtio_ids.h" + +#define VPNET_S_LINK_UP 1 /* Link is up */ + +struct vhost_pci_net_config { + /* + * Legal values are between 1 and 0x8000 + */ + uint16_t peer_vq_num; + /* See VPNET_S_* above */ + uint16_t status; +} QEMU_PACKED; + +#endif diff --git a/include/standard-headers/linux/virtio_ids.h b/include/standard-headers/linux/virtio_ids.h index fe74e42..d581c92 100644 --- a/include/standard-headers/linux/virtio_ids.h +++ b/include/standard-headers/linux/virtio_ids.h @@ -29,18 +29,19 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ -#define VIRTIO_ID_NET 1 /* virtio net */ -#define VIRTIO_ID_BLOCK 2 /* virtio block */ -#define VIRTIO_ID_CONSOLE 3 /* virtio console */ -#define VIRTIO_ID_RNG 4 /* virtio rng */ -#define VIRTIO_ID_BALLOON 5 /* virtio balloon */ -#define VIRTIO_ID_RPMSG 7 /* virtio remote processor messaging */ -#define VIRTIO_ID_SCSI 8 /* virtio scsi */ -#define VIRTIO_ID_9P 9 /* 9p virtio console */ -#define VIRTIO_ID_RPROC_SERIAL 11 /* virtio remoteproc serial link */ -#define VIRTIO_ID_CAIF 12 /* Virtio caif */ -#define VIRTIO_ID_GPU 16 /* virtio GPU */ -#define VIRTIO_ID_INPUT 18 /* virtio input */ -#define VIRTIO_ID_VSOCK 19 /* virtio vsock transport */ -#define VIRTIO_ID_CRYPTO 20 /* virtio crypto */ +#define VIRTIO_ID_NET 1 /* virtio net */ +#define VIRTIO_ID_BLOCK 2 /* virtio block */ +#define VIRTIO_ID_CONSOLE 3 /* virtio console */ +#define VIRTIO_ID_RNG 4 /* virtio rng */ +#define VIRTIO_ID_BALLOON 5 /* virtio balloon */ +#define VIRTIO_ID_RPMSG 7 /* virtio remote processor messaging */ +#define VIRTIO_ID_SCSI 8 /* virtio scsi */ +#define VIRTIO_ID_9P 9 /* 9p virtio console */ +#define VIRTIO_ID_RPROC_SERIAL 11 /* virtio remoteproc serial link */ +#define VIRTIO_ID_CAIF 12 /* Virtio caif */ +#define VIRTIO_ID_GPU 16 /* virtio GPU */ +#define VIRTIO_ID_INPUT 18 /* virtio input */ +#define VIRTIO_ID_VSOCK 19 /* virtio vsock transport */ +#define VIRTIO_ID_CRYPTO 20 /* virtio crypto */ +#define VIRTIO_ID_VHOST_PCI_NET 21 /* vhost-pci-net */ #endif /* _LINUX_VIRTIO_IDS_H */ -- 2.7.4
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