[dpdk-dev] [PATCH 00/16] [RFC] [VFIO] Add VFIO support to DPDK
Chris Wright
chrisw at redhat.com
Thu May 1 19:00:15 CEST 2014
* Stephen Hemminger (stephen at networkplumber.org) wrote:
> On Thu, 1 May 2014 11:05:38 +0000
> "Burakov, Anatoly" <anatoly.burakov at intel.com> wrote:
>
> > This patchset adds support for using VFIO instead of IGB_UIO to
> > map the device BARs.
> >
> > VFIO is a kernel 3.6+ driver allowing secure DMA from userspace
> > by means of using IOMMU instead of working directly with physical
> > memory like igb_uio does.
> >
> > Short summary:
> > * Adding support for VFIO in EAL PCI code
> > * Adding new command-line parameter for VFIO interrupt type
> > * Adding support for VFIO in setup.sh
> > * Renaming igb_uio_bind to dpdk_nic_bind and adding support for
> > VFIO there
> > * Removing PCI ID list from igb_uio, effectively making it another
> > generic PCI driver similar to pci_stub, vfio-pci et al
> > * Adding autotest for VFIO interrupt types
> > * Making igb_uio and VFIO compilation optional
> >
> > I'm submitting this as an RFC because this patch is based off
> > current dpdk.org branch with David Marchand's RTE_EAL_UNBIND_PORTS
> > patchset. IOW, this will *not* apply to the dpdk.org tree *unless* you
> > also apply David's patches beforehand.
> >
> > Signed-off by: Anatoly Burakov <anatoly.burakov at intel.com>
> >
> > Anatoly Burakov (16):
> > Separate igb_uio mapping into a separate file
> > Distinguish between legitimate failures and non-fatal errors
> > Rename RTE_PCI_DRV_NEED_IGB_UIO to RTE_PCI_DRV_NEED_MAPPING
> > Make igb_uio compilation optional
> > Moved interrupt type out of igb_uio
> > Add support for VFIO in Linuxapp targets
> > Add support for VFIO interrupts, add VFIO header
> > Add support for mapping devices through VFIO.
> > Enable VFIO device binding
> > Added support for selecting VFIO interrupt type from EAL command-line
> > Make --no-huge use mmap instead of malloc.
> > Adding unit tests for VFIO EAL command-line parameter
> > Removed PCI ID table from igb_uio
> > Renamed igb_uio_bind to dpdk_nic_bind
> > Added support for VFIO drivers in dpdk_nic_bind.py
> > Adding support for VFIO to setup.sh
> >
> > app/test/test_eal_flags.c | 24 +
> > app/test/test_pci.c | 4 +-
> > config/defconfig_i686-default-linuxapp-gcc | 2 +
> > config/defconfig_i686-default-linuxapp-icc | 2 +
> > config/defconfig_x86_64-default-linuxapp-gcc | 2 +
> > config/defconfig_x86_64-default-linuxapp-icc | 2 +
> > lib/librte_eal/bsdapp/eal/eal_pci.c | 2 +-
> > lib/librte_eal/common/Makefile | 1 +
> > lib/librte_eal/common/eal_common_pci.c | 17 +-
> > lib/librte_eal/common/include/rte_pci.h | 7 +-
> > .../common/include/rte_pci_dev_feature_defs.h | 46 ++
> > .../common/include/rte_pci_dev_features.h | 42 ++
> > lib/librte_eal/linuxapp/Makefile | 2 +
> > lib/librte_eal/linuxapp/eal/Makefile | 6 +-
> > lib/librte_eal/linuxapp/eal/eal.c | 35 +
> > lib/librte_eal/linuxapp/eal/eal_interrupts.c | 203 +++++-
> > lib/librte_eal/linuxapp/eal/eal_memory.c | 8 +-
> > lib/librte_eal/linuxapp/eal/eal_pci.c | 480 ++------------
> > lib/librte_eal/linuxapp/eal/eal_pci_uio.c | 416 ++++++++++++
> > lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 709 +++++++++++++++++++++
> > lib/librte_eal/linuxapp/eal/eal_pci_vfio_socket.c | 367 +++++++++++
> > .../linuxapp/eal/include/eal_internal_cfg.h | 3 +
> > lib/librte_eal/linuxapp/eal/include/eal_pci_init.h | 120 ++++
> > lib/librte_eal/linuxapp/eal/include/eal_vfio.h | 55 ++
> > .../linuxapp/eal/include/exec-env/rte_interrupts.h | 7 +-
> > lib/librte_eal/linuxapp/igb_uio/igb_uio.c | 70 +-
> > lib/librte_pmd_e1000/em_ethdev.c | 2 +-
> > lib/librte_pmd_e1000/igb_ethdev.c | 4 +-
> > lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 4 +-
> > lib/librte_pmd_vmxnet3/vmxnet3_ethdev.c | 2 +-
> > tools/dpdk_nic_bind.py | 500 +++++++++++++++
> > tools/igb_uio_bind.py | 485 --------------
> > tools/setup.sh | 168 ++++-
> > 33 files changed, 2797 insertions(+), 1000 deletions(-)
> > create mode 100644 lib/librte_eal/common/include/rte_pci_dev_feature_defs.h
> > create mode 100644 lib/librte_eal/common/include/rte_pci_dev_features.h
> > create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_uio.c
> > create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
> > create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio_socket.c
> > create mode 100644 lib/librte_eal/linuxapp/eal/include/eal_pci_init.h
> > create mode 100644 lib/librte_eal/linuxapp/eal/include/eal_vfio.h
> > create mode 100755 tools/dpdk_nic_bind.py
> > delete mode 100755 tools/igb_uio_bind.py
>
> Will this work in guest? or only on bare metal?
hmm, vfio requires iommu support, however virtio pmd?
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