Hi, This v4 patch uses vfio-noiommu-way to access virtio-net pci interface. Tested for arm64 thunderX platform. Patch builds for x86/i386/arm/armv8/thunderX. Tested with testpmd application.
Refer v3 [1] cover letter for dependancy description: Step to enable vfio-noiommu mode: - modprobe vfio-pci echo 1 > /sys/module/vfio/parameters/enable_unsafe_* - then bind ./tools/dpdk_nic_bind.py -b vfio-pci 0000:00:03.0 - Testpmd application to try out for: ./app/testpmd -c 0x3 -n 4 -- -i --portmask=0x0 --nb-cores=1 --port-topology=chained On host side ping to tapX interface and observe pkt_cnt on guest side. For patch history from v1-->v3 pl. refer v3 cover letter [1] v3--> v4: - Incorporated v3 review comments, Thanks to Stephen, Yuan, Bruce for comment! - Tested for Huawei patch series titled "[PATCH v2 0/4] fix the issue that DPDK takes over virtio device blindly". - Patch no 11 and 13 are testonly patches used for this patch series [Anatoly/ Yuan] Major change in series: - Introducing vfio interface parse api in virtio pmd driver - Added vfio device specific private header in struct virtio_hw{} - Dummy in/oub x86-style api, just to pass build error for non-x86 arch for vfio mode. - VIRTIO_REG_RD/WR API(s) are now able to do rd/wr for both interfaces i.e. for vfio and igb_uio/ioport bar. Tested for both mode for x86 and also only for vfio for arm64 (non-x86) archs. So to try-out complete patc-set w/o cut-n-paste pain clone this [2] Thanks!. [1] http://permalink.gmane.org/gmane.comp.networking.dpdk.devel/31117 [2] https://github.com/sshukla82/dpdk.git branch master-virtio-vfio-v4 Anatoly Burakov (1): vfio: Support for no-IOMMU mode Santosh Shukla (12): virtio: Introduce config RTE_VIRTIO_INC_VECTOR config: i686: set RTE_VIRTIO_INC_VECTOR=n linuxapp: eal: arm: Always return 0 for rte_eal_iopl_init() linuxapp/vfio: ignore mapping for ioport region virtio_pci.h: build fix for sys/io.h for non-x86 arch eal: pci: vfio: add rd/wr func for pci bar space virtio: vfio: add api support to rd/wr ioport bar virtio: pci: extend virtio pci rw api for vfio interface virtio: ethdev: check for vfio interface virtio: pci: add dummy func definition for in/outb for non-x86 arch config: armv7/v8: Enable RTE_LIBRTE_VIRTIO_PMD virtio: enable vfio in pmd driver Yuanhan Liu (1): eal: pci: export pci_[un]map_device config/common_linuxapp | 1 + config/defconfig_arm-armv7a-linuxapp-gcc | 4 +- config/defconfig_arm64-armv8a-linuxapp-gcc | 4 +- config/defconfig_i686-native-linuxapp-gcc | 1 + config/defconfig_i686-native-linuxapp-icc | 1 + drivers/net/virtio/Makefile | 2 +- drivers/net/virtio/virtio_ethdev.c | 124 ++++++++++++++- drivers/net/virtio/virtio_pci.h | 128 +++++++++++++-- drivers/net/virtio/virtio_rxtx.c | 7 + drivers/net/virtio/virtio_vfio_rw.h | 107 +++++++++++++ lib/librte_eal/bsdapp/eal/eal_pci.c | 4 +- lib/librte_eal/bsdapp/eal/rte_eal_version.map | 7 + lib/librte_eal/common/eal_common_pci.c | 4 +- lib/librte_eal/common/eal_private.h | 18 --- lib/librte_eal/common/include/rte_pci.h | 65 ++++++++ lib/librte_eal/linuxapp/eal/Makefile | 1 + lib/librte_eal/linuxapp/eal/eal.c | 2 + lib/librte_eal/linuxapp/eal/eal_pci.c | 41 ++++- lib/librte_eal/linuxapp/eal/eal_pci_init.h | 28 ++++ lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 191 ++++++++++++++++------- lib/librte_eal/linuxapp/eal/eal_pci_vfio_dma.c | 84 ++++++++++ lib/librte_eal/linuxapp/eal/eal_vfio.h | 5 + lib/librte_eal/linuxapp/eal/rte_eal_version.map | 7 + 23 files changed, 740 insertions(+), 96 deletions(-) create mode 100644 drivers/net/virtio/virtio_vfio_rw.h create mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio_dma.c -- 1.7.9.5