From: Xiao Wang <xiao.w.wang@intel.com>
To: ferruh.yigit@intel.com
Cc: anatoly.burakov@intel.com, dev@dpdk.org,
maxime.coquelin@redhat.com, zhihong.wang@intel.com,
tiwei.bie@intel.com, jianfeng.tan@intel.com,
cunming.liang@intel.com, dan.daly@intel.com, thomas@monjalon.net,
Xiao Wang <xiao.w.wang@intel.com>
Subject: [dpdk-dev] [PATCH v9 5/5] doc: add ifcvf driver document and release note
Date: Tue, 17 Apr 2018 15:06:24 +0800 [thread overview]
Message-ID: <20180417070624.18549-6-xiao.w.wang@intel.com> (raw)
In-Reply-To: <20180417070624.18549-1-xiao.w.wang@intel.com>
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
---
doc/guides/nics/features/ifcvf.ini | 8 +++
doc/guides/nics/ifcvf.rst | 98 ++++++++++++++++++++++++++++++++++
doc/guides/nics/index.rst | 1 +
doc/guides/rel_notes/release_18_05.rst | 9 ++++
4 files changed, 116 insertions(+)
create mode 100644 doc/guides/nics/features/ifcvf.ini
create mode 100644 doc/guides/nics/ifcvf.rst
diff --git a/doc/guides/nics/features/ifcvf.ini b/doc/guides/nics/features/ifcvf.ini
new file mode 100644
index 000000000..ef1fc4711
--- /dev/null
+++ b/doc/guides/nics/features/ifcvf.ini
@@ -0,0 +1,8 @@
+;
+; Supported features of the 'ifcvf' vDPA driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+x86-32 = Y
+x86-64 = Y
diff --git a/doc/guides/nics/ifcvf.rst b/doc/guides/nics/ifcvf.rst
new file mode 100644
index 000000000..d7e76353c
--- /dev/null
+++ b/doc/guides/nics/ifcvf.rst
@@ -0,0 +1,98 @@
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2018 Intel Corporation.
+
+IFCVF vDPA driver
+=================
+
+The IFCVF vDPA (vhost data path acceleration) driver provides support for the
+Intel FPGA 100G VF (IFCVF). IFCVF's datapath is virtio ring compatible, it
+works as a HW vhost backend which can send/receive packets to/from virtio
+directly by DMA. Besides, it supports dirty page logging and device state
+report/restore. This driver enables its vDPA functionality with live migration
+feature.
+
+
+Pre-Installation Configuration
+------------------------------
+
+Config File Options
+~~~~~~~~~~~~~~~~~~~
+
+The following option can be modified in the ``config`` file.
+
+- ``CONFIG_RTE_LIBRTE_IFCVF_VDPA_PMD`` (default ``y`` for linux)
+
+ Toggle compilation of the ``librte_ifcvf_vdpa`` driver.
+
+
+IFCVF vDPA Implementation
+-------------------------
+
+IFCVF's vendor ID and device ID are same as that of virtio net pci device,
+with its specific subsystem vendor ID and device ID. To let the device be
+probed by IFCVF driver, adding "vdpa=1" parameter helps to specify that this
+device is to be used in vDPA mode, rather than polling mode, virtio pmd will
+skip when it detects this message.
+
+Different VF devices serve different virtio frontends which are in different
+VMs, so each VF needs to have its own DMA address translation service. During
+the driver probe a new container is created for this device, with this
+container vDPA driver can program DMA remapping table with the VM's memory
+region information.
+
+Key IFCVF vDPA driver ops
+~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- ifcvf_dev_config:
+ Enable VF data path with virtio information provided by vhost lib, including
+ IOMMU programming to enable VF DMA to VM's memory, VFIO interrupt setup to
+ route HW interrupt to virtio driver, create notify relay thread to translate
+ virtio driver's kick to a MMIO write onto HW, HW queues configuration.
+
+ This function gets called to set up HW data path backend when virtio driver
+ in VM gets ready.
+
+- ifcvf_dev_close:
+ Revoke all the setup in ifcvf_dev_config.
+
+ This function gets called when virtio driver stops device in VM.
+
+To create a vhost port with IFC VF
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- Create a vhost socket and assign a VF's device ID to this socket via
+ vhost API. When QEMU vhost connection gets ready, the assigned VF will
+ get configured automatically.
+
+
+Features
+--------
+
+Features of the IFCVF driver are:
+
+- Compatibility with virtio 0.95 and 1.0.
+- Live migration.
+
+
+Prerequisites
+-------------
+
+- Platform with IOMMU feature. IFC VF needs address translation service to
+ Rx/Tx directly with virtio driver in VM.
+
+
+Limitations
+-----------
+
+Dependency on vfio-pci
+~~~~~~~~~~~~~~~~~~~~~~
+
+vDPA driver needs to setup VF MSIX interrupts, each queue's interrupt vector
+is mapped to a callfd associated with a virtio ring. Currently only vfio-pci
+allows multiple interrupts, so the IFCVF driver is dependent on vfio-pci.
+
+Live Migration with VIRTIO_NET_F_GUEST_ANNOUNCE
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+IFC VF doesn't support RARP packet generation, virtio frontend supporting
+VIRTIO_NET_F_GUEST_ANNOUNCE feature can help to do that.
diff --git a/doc/guides/nics/index.rst b/doc/guides/nics/index.rst
index ea9110c81..9b98c620f 100644
--- a/doc/guides/nics/index.rst
+++ b/doc/guides/nics/index.rst
@@ -45,6 +45,7 @@ Network Interface Controller Drivers
vmxnet3
pcap_ring
fail_safe
+ ifcvf
**Figures**
diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst
index bc9cdda6a..2f803231e 100644
--- a/doc/guides/rel_notes/release_18_05.rst
+++ b/doc/guides/rel_notes/release_18_05.rst
@@ -115,6 +115,15 @@ New Features
Linux uevent is supported as backend of this device event notification framework.
+* **Added IFCVF vDPA driver.**
+
+ Added IFCVF vDPA driver to support Intel FPGA 100G VF device. IFCVF works
+ as a HW vhost data path accelerator, it supports live migration and is
+ compatible with virtio 0.95 and 1.0. This driver registers ifcvf vDPA driver
+ to vhost lib, when virtio connected, with the help of the registered vDPA
+ driver the assigned VF gets configured to Rx/Tx directly to VM's virtio
+ vrings.
+
API Changes
-----------
--
2.15.1
next prev parent reply other threads:[~2018-04-17 7:07 UTC|newest]
Thread overview: 98+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-09 23:08 [dpdk-dev] [PATCH 0/3] add ifcvf driver Xiao Wang
2018-03-09 23:08 ` [dpdk-dev] [PATCH 1/3] eal/vfio: add support for multiple container Xiao Wang
2018-03-14 12:08 ` Burakov, Anatoly
2018-03-15 16:49 ` Wang, Xiao W
2018-03-09 23:08 ` [dpdk-dev] [PATCH 2/3] bus/pci: expose sysfs parsing API Xiao Wang
2018-03-14 11:19 ` Burakov, Anatoly
2018-03-14 13:30 ` Gaëtan Rivet
2018-03-15 16:49 ` Wang, Xiao W
2018-03-15 17:19 ` Gaëtan Rivet
2018-03-19 1:31 ` Wang, Xiao W
2018-03-21 13:21 ` [dpdk-dev] [PATCH v2 0/3] add ifcvf driver Xiao Wang
2018-03-21 13:21 ` [dpdk-dev] [PATCH v2 1/3] eal/vfio: add support for multiple container Xiao Wang
2018-03-21 20:32 ` Thomas Monjalon
2018-03-21 21:37 ` Gaëtan Rivet
2018-03-22 3:00 ` Wang, Xiao W
2018-03-21 13:21 ` [dpdk-dev] [PATCH v2 2/3] bus/pci: expose sysfs parsing API Xiao Wang
2018-03-21 20:44 ` Thomas Monjalon
2018-03-22 2:46 ` Wang, Xiao W
2018-03-21 13:21 ` [dpdk-dev] [PATCH v2 3/3] net/ifcvf: add ifcvf driver Xiao Wang
2018-03-21 20:52 ` Thomas Monjalon
2018-03-23 10:39 ` Wang, Xiao W
2018-03-21 20:57 ` Maxime Coquelin
2018-03-23 10:37 ` Wang, Xiao W
2018-03-22 8:51 ` Ferruh Yigit
2018-03-22 17:23 ` Wang, Xiao W
2018-03-31 2:29 ` [dpdk-dev] [PATCH v3 0/3] add ifcvf vdpa driver Xiao Wang
2018-03-31 2:29 ` [dpdk-dev] [PATCH v3 1/4] eal/vfio: add support for multiple container Xiao Wang
2018-03-31 11:06 ` Maxime Coquelin
2018-03-31 2:29 ` [dpdk-dev] [PATCH v3 2/4] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-03-31 11:13 ` Maxime Coquelin
2018-03-31 13:16 ` Thomas Monjalon
2018-04-02 4:08 ` Wang, Xiao W
2018-03-31 2:29 ` [dpdk-dev] [PATCH v3 3/4] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-03-31 11:26 ` Maxime Coquelin
2018-04-03 9:38 ` Wang, Xiao W
2018-04-04 14:40 ` [dpdk-dev] [PATCH v4 0/4] " Xiao Wang
2018-04-04 14:40 ` [dpdk-dev] [PATCH v4 1/4] eal/vfio: add multiple container support Xiao Wang
2018-04-05 18:06 ` [dpdk-dev] [PATCH v5 0/4] add ifcvf vdpa driver Xiao Wang
2018-04-05 18:06 ` [dpdk-dev] [PATCH v5 1/4] eal/vfio: add multiple container support Xiao Wang
2018-04-05 18:06 ` [dpdk-dev] [PATCH v5 2/4] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-11 18:58 ` Ferruh Yigit
2018-04-05 18:07 ` [dpdk-dev] [PATCH v5 3/4] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-11 18:58 ` Ferruh Yigit
2018-04-12 7:19 ` [dpdk-dev] [PATCH v6 0/4] " Xiao Wang
2018-04-12 7:19 ` [dpdk-dev] [PATCH v6 1/4] eal/vfio: add multiple container support Xiao Wang
2018-04-12 14:03 ` Burakov, Anatoly
2018-04-12 16:07 ` Wang, Xiao W
2018-04-12 16:24 ` Burakov, Anatoly
2018-04-13 9:18 ` Wang, Xiao W
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 0/5] add ifcvf vdpa driver Xiao Wang
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 1/5] vfio: extend data structure for multi container Xiao Wang
2018-04-16 10:02 ` Burakov, Anatoly
2018-04-16 12:22 ` Wang, Xiao W
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 0/5] add ifcvf vdpa driver Xiao Wang
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 1/5] vfio: extend data structure for multi container Xiao Wang
2018-04-16 15:56 ` Burakov, Anatoly
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 2/5] vfio: add multi container support Xiao Wang
2018-04-16 15:58 ` Burakov, Anatoly
2018-04-17 7:06 ` [dpdk-dev] [PATCH v9 0/5] add ifcvf vdpa driver Xiao Wang
2018-04-17 7:06 ` [dpdk-dev] [PATCH v9 1/5] vfio: extend data structure for multi container Xiao Wang
2018-04-17 7:06 ` [dpdk-dev] [PATCH v9 2/5] vfio: add multi container support Xiao Wang
2018-04-17 7:06 ` [dpdk-dev] [PATCH v9 3/5] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-17 7:06 ` [dpdk-dev] [PATCH v9 4/5] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-17 7:06 ` Xiao Wang [this message]
2018-04-17 11:13 ` [dpdk-dev] [PATCH v9 0/5] " Ferruh Yigit
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 3/5] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 4/5] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-16 15:34 ` [dpdk-dev] [PATCH v8 5/5] doc: add ifcvf driver document and release note Xiao Wang
2018-04-16 16:36 ` [dpdk-dev] [PATCH v8 0/5] add ifcvf vdpa driver Ferruh Yigit
2018-04-16 18:07 ` Thomas Monjalon
2018-04-17 5:36 ` Wang, Xiao W
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 2/5] vfio: add multi container support Xiao Wang
2018-04-16 10:03 ` Burakov, Anatoly
2018-04-16 12:44 ` Wang, Xiao W
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 3/5] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 4/5] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-15 15:33 ` [dpdk-dev] [PATCH v7 5/5] doc: add ifcvf driver document and release note Xiao Wang
2018-04-12 7:19 ` [dpdk-dev] [PATCH v6 2/4] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-12 7:19 ` [dpdk-dev] [PATCH v6 3/4] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-12 7:19 ` [dpdk-dev] [PATCH v6 4/4] doc: add ifcvf driver document and release note Xiao Wang
2018-04-05 18:07 ` [dpdk-dev] [PATCH v5 " Xiao Wang
2018-04-11 18:59 ` [dpdk-dev] [PATCH v5 0/4] add ifcvf vdpa driver Ferruh Yigit
2018-04-12 5:47 ` Wang, Xiao W
2018-04-04 14:40 ` [dpdk-dev] [PATCH v4 2/4] net/virtio: skip device probe in vdpa mode Xiao Wang
2018-04-04 14:40 ` [dpdk-dev] [PATCH v4 3/4] net/ifcvf: add ifcvf vdpa driver Xiao Wang
2018-04-04 14:40 ` [dpdk-dev] [PATCH v4 4/4] doc: add ifcvf driver document and release note Xiao Wang
2018-03-31 2:29 ` [dpdk-dev] [PATCH v3 4/4] net/ifcvf: add " Xiao Wang
2018-03-31 11:28 ` Maxime Coquelin
2018-03-09 23:08 ` [dpdk-dev] [PATCH 3/3] net/ifcvf: add ifcvf driver Xiao Wang
2018-03-10 18:23 ` [dpdk-dev] [PATCH 0/3] " Maxime Coquelin
2018-03-15 16:49 ` Wang, Xiao W
2018-03-21 20:47 ` Maxime Coquelin
2018-03-23 10:27 ` Wang, Xiao W
2018-03-25 9:51 ` Maxime Coquelin
2018-03-26 9:05 ` Wang, Xiao W
2018-03-26 13:29 ` Maxime Coquelin
2018-03-27 4:40 ` Wang, Xiao W
2018-03-27 5:09 ` Maxime Coquelin
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