Re: [Qemu-devel] [PATCH v13 5/5] VMXNET3 device implementation

["Andreas Färber" <afaerber@suse.de>]

Am 06.03.2013 08:21, schrieb Dmitry Fleytman:
> Signed-off-by: Dmitry Fleytman <dmitry@daynix.com>
> Signed-off-by: Yan Vugenfirer <yan@daynix.com>
> ---
>  default-configs/pci.mak |    1 +
>  hw/Makefile.objs        |    1 +
>  hw/pci/pci.h            |    1 +
>  hw/vmxnet3.c            | 2460 +++++++++++++++++++++++++++++++++++++++++++++++
>  hw/vmxnet3.h            |  760 +++++++++++++++
>  5 files changed, 3223 insertions(+)
>  create mode 100644 hw/vmxnet3.c
>  create mode 100644 hw/vmxnet3.h
> 
> diff --git a/default-configs/pci.mak b/default-configs/pci.mak
> index ee2d18d..ce56d58 100644
> --- a/default-configs/pci.mak
> +++ b/default-configs/pci.mak
> @@ -13,6 +13,7 @@ CONFIG_LSI_SCSI_PCI=y
>  CONFIG_MEGASAS_SCSI_PCI=y
>  CONFIG_RTL8139_PCI=y
>  CONFIG_E1000_PCI=y
> +CONFIG_VMXNET3_PCI=y
>  CONFIG_IDE_CORE=y
>  CONFIG_IDE_QDEV=y
>  CONFIG_IDE_PCI=y
> diff --git a/hw/Makefile.objs b/hw/Makefile.objs
> index 14922cb..026aff6 100644
> --- a/hw/Makefile.objs
> +++ b/hw/Makefile.objs
> @@ -120,6 +120,7 @@ common-obj-$(CONFIG_PCNET_COMMON) += pcnet.o
>  common-obj-$(CONFIG_E1000_PCI) += e1000.o
>  common-obj-$(CONFIG_RTL8139_PCI) += rtl8139.o
>  common-obj-$(CONFIG_VMXNET3_PCI) += vmxnet_tx_pkt.o vmxnet_rx_pkt.o
> +common-obj-$(CONFIG_VMXNET3_PCI) += vmxnet3.o
>  
>  common-obj-$(CONFIG_SMC91C111) += smc91c111.o
>  common-obj-$(CONFIG_LAN9118) += lan9118.o
> diff --git a/hw/pci/pci.h b/hw/pci/pci.h
> index f340fe5..3beb70b 100644
> --- a/hw/pci/pci.h
> +++ b/hw/pci/pci.h
> @@ -60,6 +60,7 @@
>  #define PCI_DEVICE_ID_VMWARE_NET         0x0720
>  #define PCI_DEVICE_ID_VMWARE_SCSI        0x0730
>  #define PCI_DEVICE_ID_VMWARE_IDE         0x1729
> +#define PCI_DEVICE_ID_VMWARE_VMXNET3     0x07B0
>  
>  /* Intel (0x8086) */
>  #define PCI_DEVICE_ID_INTEL_82551IT      0x1209
> diff --git a/hw/vmxnet3.c b/hw/vmxnet3.c
> new file mode 100644
> index 0000000..75b7181
> --- /dev/null
> +++ b/hw/vmxnet3.c
> @@ -0,0 +1,2460 @@
> +/*
> + * QEMU VMWARE VMXNET3 paravirtual NIC
> + *
> + * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
> + *
> + * Developed by Daynix Computing LTD (http://www.daynix.com)
> + *
> + * Authors:
> + * Dmitry Fleytman <dmitry@daynix.com>
> + * Tamir Shomer <tamirs@daynix.com>
> + * Yan Vugenfirer <yan@daynix.com>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + *
> + */
> +
> +#include "hw.h"
> +#include "pci/pci.h"
> +#include "net/net.h"
> +#include "virtio-net.h"
> +#include "net/tap.h"
> +#include "net/checksum.h"
> +#include "sysemu/sysemu.h"
> +#include "qemu-common.h"
> +#include "qemu/bswap.h"
> +#include "pci/msix.h"
> +#include "pci/msi.h"
> +
> +#include "vmxnet3.h"
> +#include "vmxnet_debug.h"
> +#include "vmware_utils.h"
> +#include "vmxnet_tx_pkt.h"
> +#include "vmxnet_rx_pkt.h"
> +
> +#define PCI_DEVICE_ID_VMWARE_VMXNET3_REVISION 0x1
> +#define VMXNET3_MSIX_BAR_SIZE 0x2000
> +
> +#define VMXNET3_BAR0_IDX      (0)
> +#define VMXNET3_BAR1_IDX      (1)
> +#define VMXNET3_MSIX_BAR_IDX  (2)
> +
> +#define VMXNET3_OFF_MSIX_TABLE (0x000)
> +#define VMXNET3_OFF_MSIX_PBA   (0x800)
> +
> +/* Link speed in Mbps should be shifted by 16 */
> +#define VMXNET3_LINK_SPEED      (1000 << 16)
> +
> +/* Link status: 1 - up, 0 - down. */
> +#define VMXNET3_LINK_STATUS_UP  0x1
> +
> +/* Least significant bit should be set for revision and version */
> +#define VMXNET3_DEVICE_VERSION    0x1
> +#define VMXNET3_DEVICE_REVISION   0x1
> +
> +/* Macros for rings descriptors access */
> +#define VMXNET3_READ_TX_QUEUE_DESCR8(dpa, field) \
> +    (vmw_shmem_ld8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
> +
> +#define VMXNET3_WRITE_TX_QUEUE_DESCR8(dpa, field, value) \
> +    (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field, value)))
> +
> +#define VMXNET3_READ_TX_QUEUE_DESCR32(dpa, field) \
> +    (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
> +
> +#define VMXNET3_WRITE_TX_QUEUE_DESCR32(dpa, field, value) \
> +    (vmw_shmem_st32(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
> +
> +#define VMXNET3_READ_TX_QUEUE_DESCR64(dpa, field) \
> +    (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field)))
> +
> +#define VMXNET3_WRITE_TX_QUEUE_DESCR64(dpa, field, value) \
> +    (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_TxQueueDesc, field), value))
> +
> +#define VMXNET3_READ_RX_QUEUE_DESCR64(dpa, field) \
> +    (vmw_shmem_ld64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
> +
> +#define VMXNET3_READ_RX_QUEUE_DESCR32(dpa, field) \
> +    (vmw_shmem_ld32(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field)))
> +
> +#define VMXNET3_WRITE_RX_QUEUE_DESCR64(dpa, field, value) \
> +    (vmw_shmem_st64(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
> +
> +#define VMXNET3_WRITE_RX_QUEUE_DESCR8(dpa, field, value) \
> +    (vmw_shmem_st8(dpa + offsetof(struct Vmxnet3_RxQueueDesc, field), value))
> +
> +/* Macros for guest driver shared area access */
> +#define VMXNET3_READ_DRV_SHARED64(shpa, field) \
> +    (vmw_shmem_ld64(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
> +
> +#define VMXNET3_READ_DRV_SHARED32(shpa, field) \
> +    (vmw_shmem_ld32(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
> +
> +#define VMXNET3_WRITE_DRV_SHARED32(shpa, field, val) \
> +    (vmw_shmem_st32(shpa + offsetof(struct Vmxnet3_DriverShared, field), val))
> +
> +#define VMXNET3_READ_DRV_SHARED16(shpa, field) \
> +    (vmw_shmem_ld16(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
> +
> +#define VMXNET3_READ_DRV_SHARED8(shpa, field) \
> +    (vmw_shmem_ld8(shpa + offsetof(struct Vmxnet3_DriverShared, field)))
> +
> +#define VMXNET3_READ_DRV_SHARED(shpa, field, b, l) \
> +    (vmw_shmem_read(shpa + offsetof(struct Vmxnet3_DriverShared, field), b, l))
> +
> +#define VMXNET_FLAG_IS_SET(field, flag) (((field) & (flag)) == (flag))
> +
> +#define VMXNET3(pci_dev) container_of((pci_dev), VMXNET3State, parent_obj)

This still accessing parent_obj field and wrongly makes type assumptions
about the argument. It should be:

#define TYPE_VMXNET3 "vmxnet3"
#define VMXNET3(obj) OBJECT_CHECK(VMXNET3State, (obj), TYPE_VMXNET3)

[...]
> +static const TypeInfo vmxnet3_info = {
> +    .name          = "vmxnet3",

.name = TYPE_VMXNET3,

> +    .parent        = TYPE_PCI_DEVICE,
> +    .instance_size = sizeof(VMXNET3State),
> +    .class_init    = vmxnet3_class_init,
> +};
[snip]

Cf. include/qom/object.h

Andreas

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