From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 6CF1C2C4F for ; Thu, 29 Dec 2016 08:30:06 +0100 (CET) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP; 28 Dec 2016 23:30:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,425,1477983600"; d="scan'208";a="44228286" Received: from dpdk06.sh.intel.com ([10.239.129.195]) by orsmga004.jf.intel.com with ESMTP; 28 Dec 2016 23:30:02 -0800 From: Jianfeng Tan To: dev@dpdk.org Cc: yuanhan.liu@linux.intel.com, stephen@networkplumber.org, Jianfeng Tan Date: Thu, 29 Dec 2016 07:30:34 +0000 Message-Id: <1482996643-113253-1-git-send-email-jianfeng.tan@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1480810702-114815-1-git-send-email-jianfeng.tan@intel.com> References: <1480810702-114815-1-git-send-email-jianfeng.tan@intel.com> Subject: [dpdk-dev] [PATCH v2 0/9] rxq interrupt mode for virtio PMD X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Dec 2016 07:30:06 -0000 v2: - Add PCI queue/irq config ops. - Move rxq interrupt settings before sending DRIVER OK. Historically, virtio PMD can only be binded to igb_uio or uio_pci_generic, and not for vfio-pci. Besides, quote from http://dpdk.org/doc/guides-16.11/rel_notes/release_2_1.html: "Per queue RX interrupt events are only allowed in VFIO which supports multiple MSI-X vectors." As Linux starts to support vfio noiommu mode since 4.8.0, it's a good chance to enable rxq interrupt for virtio PMD. How to test: Step 1, prepare a VM image with kernel version >= 4.8.0. Step 2, on the host, start a testpmd with a vhost port: $ testpmd -c 0x7 -m 1024 --vdev 'eth_vhost0,iface=/tmp/sock0,queues=2' \ --no-pci -- -i --rxq=2 --txq=2 --nb-cores=2 Step 3, boot the VM: $ qemu ... -chardev socket,id=chr1,path=/tmp/sock0 \ -netdev vhost-user,id=net1,chardev=chr1,vhostforce,queues=2 \ -device virtio-net-pci,netdev=net1,mq=on,vectors=5 ... Step 4, start l3fwd-power in VM: $ l3fwd-power -c 0x3 -n 4 -- -p 1 -P --config="(0,0,1),(0,1,1)" --no-numa Step 5, send packets from testpmd on the host: $ start tx_first Then l3fwd-power outputs: L3FWD_POWER: lcore 1 is waked up from rx interrupt on port 0 queue 0 L3FWD_POWER: lcore 1 is waked up from rx interrupt on port 0 queue 1 Signed-off-by: Jianfeng Tan Jianfeng Tan (9): net/virtio: fix rewriting LSC flag net/virtio: add Rx descriptor check net/virtio: add PCI ops for queue/irq binding net/virtio: add Rx queue intr enable/disable functions net/virtio: setup rxq interrupts net/virtio: unbind intr/eventfd when stop device net/virtio: unmapping queue/irq when close device examples/l3fwd: add parse-ptype option examples/l3fwd-power: fix not stop and close device drivers/net/virtio/virtio_ethdev.c | 149 +++++++++++++++++++++++++++++++++++-- drivers/net/virtio/virtio_ethdev.h | 3 + drivers/net/virtio/virtio_pci.c | 29 ++++++++ drivers/net/virtio/virtio_pci.h | 5 ++ drivers/net/virtio/virtio_rxtx.c | 9 +++ drivers/net/virtio/virtqueue.c | 11 --- drivers/net/virtio/virtqueue.h | 24 +++++- examples/l3fwd-power/main.c | 70 ++++++++++++++++- 8 files changed, 282 insertions(+), 18 deletions(-) -- 2.7.4