Dpdk hardware timestamp h. However, I couldn’t find any information regarding packet timestamps in the documentation of DPDK. See the DPDK Getting Started Guide for Linux for instructions on how to build DPDK. 2. 02. It would be great to update the doc to explain what the hardware timestamp is supposed to be. I40E VXLAN-GPE Support Tests Increased the port_id range from 8 bits to 16 bits in order to support more than 256 ports in DPDK. On the other hand hardware offloads in 19. 11 hardware offloads are enabled using a single member field unit64_t offloads in struct rte_eth_rxmode unlike individual offload parameters as older DPDK versions. Main Page Enable CRC stripping by hardware. Rx HW timestamp. For example when a PF is reset, all its VFs should also be reset. 0-6-amd64 Capture application: dpdk-pcapng DPDK应用程序的一般处理流程如下： 初始化DPDK环境：调用rte_eal_init()初始化DPDK环境抽象层（EAL），设置运行时环境和配置。 配置和绑定网卡：使用rte_eth_dev_configure()配置网卡，包括队列、收发缓冲区等。绑定网卡到DPDK的驱动程序，以确保网卡被DPDK识别 DPDK 18. The functional test of the IEEE1588 Precise Time Protocol offload support in Poll Mode Drivers is done with a specific ieee1588` forwarding mode of the testpmd application. 31. Increased the port_id range from 8 bits to 16 bits in order to support more than 256 ports in DPDK. The calc_latency() Callback. 11)" comment: Optional comment to add to file header. org Cc: rasland@nvidia. I'm running tests both with Intel X520 and X710 NICs. com, matan@nvidia. Intel® Ethernet 700 Series will process these tunneling layers by the hardware. RX interrupts. In this mode, packets are received one by one and are expected to be PTP V2 L2 Ethernet frames with the specific Ethernet type 0x88F7, containing PTP SYNC 1. 11] regex/mlx5: support timestamp format @ 2021-05-19 18:35 Viacheslav Ovsiienko 2021-05-31 11:33 ` Xueming(Steven) Li 0 siblings, 1 reply; 2+ messages in thread From: Viacheslav Ovsiienko @ 2021-05-19 18:35 UTC (permalink / raw) To: stable; +Cc: bluca, xuemingl [ upstream commit While the explanation that DPDK developers gave is that it’s hardware’s behavior. com>, dev@dpdk. For Tx, it is For benchmarking at these aggressively low latency levels we built a testbed with commodity hardware providing 7 nanosecond timestamp granularity. By default the ARK PMD library will be built into the DPDK library. In this mode, packets are received one by one and are expected to be PTP V2 L2 Ethernet frames with the specific Ethernet type 0x88F7, containing PTP SYNC Depending on the version and configuration the hardware might support either FR or RT timestamps, or both in the same time on per queue basis. Set default value for refcnt, next and nb_segs at mbuf free. [uses] rte_eth_rxconf,rte_eth_rxmode: offloads:RTE_ETH_RX_OFFLOAD_KEEP_CRC. This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s). 0. I’ve examined the AF_PACKET PMD code, but unfortunately, I didn’t find any configuration related to PACKET_TIMESTAMP on the socket. __extension__ uint16_t hw_timestamp: Enable HW timestamp . Rx port can receive three packets too. Added support for device removal event. This article looks at inline IPsec acceleration support enablement in the Data Plane Development Kit (DPDK) framework with a particular focus on the Intel® 82599 10 Gigabit Ethernet Controller series * [dpdk-stable] [PATCH 20. Open to suggestions and approaches to calculate this time. 26. In the description of Currently, I enable hardware timestamping on the AF_PACKET socket using the libpcap API. timestamp is 4 ns for the 10Gbps implementation and 1 ns for 25Gbps implementation. Main Page The 2 vlans have been stripped by the hardware and their tci are saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer Indicate that the timestamp field in the mbuf is valid. *dpdk-dev] mlx5 & pdump: convert HW timestamps to nanoseconds @ 2020-05-19 18:20 PATRICK KEROULAS 2020-05-21 15:33 ` Thomas Monjalon 0 siblings, 1 reply; 14+ messages in thread From: PATRICK KEROULAS @ 2020-05-19 18:20 UTC (permalink / raw) To: dev Hello, I'm trying to build an accurate capture device based on Mellanox Connect-X5 with following . eBPF Probes in DPDK applications for troubleshooting and monitoring Vipin Varghese & Siva Tummala, Intel. At the same time, little work is done to reduce the timestamp inaccuracy incurred by batch processing. com> To: <stable@dpdk. As a dirty-workaround I'm using gettimeofday() to timestamp incoming packets but I would rather like to retrieve a more accurate and realistic timestamp from the Ethernet PHY layer instead. and also 不同的版本的dpdk可能源码会有些不同，请注意版本即可。重点是把dpdk的相关应用熟悉，在此基础上才能更好的对dpdk的框架有所了解。由应用到内部的实现，可能会更好的理解dpdk的设计理念和相关技术特点。 The patch queries the timestamp formats supported by the hardware and sets the configuration values in queue context accordingly. In a regular program I can get the timestamp the packet is received by the NIC and the kernel using SO_TIMESTAMPING [0]. Only one Tx timestamp can be realistically handled at once. To compile the sample application see Compiling the Sample Applications. uint16_t enable_lro: Enable LRO . the hardware offload features to activate, with dedicated fields for each statically configurable offload hardware feature provided by Ethernet devices, such as IP checksum or VLAN tag stripping for example. Move the sequence number to the second cache line. Vswitch PVP multi-paths performance with CBDMA test plan; 242. To build with a non-zero minimum tx packet length, set the above macro in your This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s). 0. Fixes: 92f2c6a30fe0 ("regex/mlx5: add send queue") Cc: However, if you will run into hardware limitations if you want to timestamp *all* packets. Added SoftNIC PMD. Added support 6. The hardware timestamp of receiving packets cannot be obtained. The suit support NIC: Intel® Ethernet 700 Series, Intel® Ethernet 800 Series. Can this time information be accessed by odp-dpdk? (finding the If hardware timestamping is supported by the NIC, the sample application will also display the average latency since the packet was timestamped in hardware, on top of the latency since Use -t to enable hardware timestamping. com, orika@nvidia. Statistics query including Basic, Extended and per queue. The Ethernet Device API is composed of two parts: The application-oriented Ethernet API that includes functions to setup an Ethernet device (configure it, setup its RX and TX queues and start it), to get its MAC address, the speed and the status of its physical link, to receive and to transmit packets, and so on. mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s). The DPDK driver is able to receive packets with nano-second precision hardware timestamp, and it can achieve zero packet loss even when receiving and transmitting small As far as I know, MLX5 is the only driver to support hardware timestamping. eal/bsd: Fix inappropriate header guards. This document provides test plan for Intel® Ethernet 700 Series vxlan packet detecting, checksum computing and filtering. DPDK GSO lib test plan; 239. . 11) capture application in linux that reads the hardware timestamp of received packets but, for instance, if I do a capture of 1 minute and I calculate the difference of timestamps from the last received packet and the first packet, I get a duration around 10 seconds. 7. Vswitch sample test with vhost async data path test plan; 241. ethtool -T enp8sf0 Time stamping parameters for enp8sf0: Capabilities: hardware-transmit software-transmit hardware-receive software-receive software-system-clock hardware-raw-clock PTP Hardware Clock: 1 Hardware Transmit Timestamp Modes: off on Hardware Receive Filter Modes: none all. Timers can be loaded from one core and executed on another. I have set "PTP Hardware Timestamp" to "Enabled". If it's nanoseconds, then just a shift regarding system time is enough ? Does it also need a multiplication? Can we query that from hardware? Or provide a piece of code to be used. org> Cc: Matan Azrad <matan@nvidia. When a port has to be reset passively, the DPDK application can invoke this function. * [dpdk-stable] [PATCH 20. The commit provides the querying information about the supported timestamp formats and provides the means to configure ones at queue creation. Hi, I'm running the l3fwd DPDK sample application and using Moongen's HW timestamp capabilities through this suite for benchmarking l3fwd's latency with 64B packets. org> Cc: <bluca@debian. com> To: <dev@dpdk. 34. Hardware checksum Tx offload for generic IP or UDP tunnel, including VXLAN and GRE. com> Subject: [dpdk-stable] The patch queries the timestamp formats supported by the hardware and sets the configuration values in queue context accordingly. Instead, expose the hardware clock device on the NIC directly as a HW PTP clock source, to allow time conversion in userspace and optionally synchronize system time with a userspace PTP stack such as Fixed issue with e1000 ieee1588 timestamp initialization. Example: "dpdk-dumpcap 1. DPDK 在DPDK里面在各种网卡驱动程序里面找到了一些关于添加时间戳的函数，不同的网卡驱动程序都调用了rte_timecounter_update函数和rte_ns_t *PATCH] net/mlx5: fix read device clock in real time mode @ 2023-01-03 11:11 Viacheslav Ovsiienko 2023-01-08 12:59 ` Raslan Darawsheh 0 siblings, 1 reply; 2+ messages in thread From: Viacheslav Ovsiienko @ 2023-01-03 11:11 UTC (permalink / raw) To: dev; +Cc: matan, rasland, orika, stable Since ConnectX-6DX the real time timestamp mode is supported. To make HW timestamping work, i referenced the rxtx_callbacks example. 4. Vswitch sample test with vhost async data path test plan; 240. Building DPDK. The application is located in the rxtx_callbacks sub-directory. This can only happen if vlan stripping is enabled in the RX configuration of the PMD. soft类型的是 index 0 type是timestamp或者timestamps. 11 17. We encountered an issue with default configuration of 82599 controller for UDP port number filter. 6 Limited Space Depending on the version and configuration the hardware might support either FR (free-running) or RT (real-time) timestamps, per queue basis. This test involves testing many different scenarios with a L4 checksum. However, on some 1G NICs, for example, i350, system time is disabled by default and the IEEE1588 timestamp was always 0. Supports Timestamp. eal/bsd: Fix virtio on FreeBSD. *Add timestamp to dpdk. If not supported by the NIC, an error will be displayed. Everything else is a These folks patched DPDK to have timestamp for every packet (Intel DPDK Patches folder) And used it in out of band to store and later processing From: Michael Baum <michaelba@nvidia. It uses The mlx5_core driver supports hardware timestamps for receiving and sending packets based on the DPDK. 19. It is inevitable to degrade the performance of packet capture if the batching processing is forbidden for DPDK. 11 appear to support the hardware timestamping of RX packets. Edit: There is a way to enable latency in DPDK pktgen. Features of the library are: Timers can be periodic (multi-shot) or single (one-shot). The commit provides the querying information about the supported timestamp formats and provides the Supports CRC stripping by hardware. Set “pn” to 0xffffffee/0xffffffef on both rx and tx sides. This is sometimes supported on RX (e. Fixes: 95276abaaf0a ("vdpa/mlx5: introduce Mellanox vDPA driver") Cc: Supports the DPDK Flow API for generic filtering. *dpdk-dev] mlx5 & pdump: convert HW timestamps to nanoseconds @ 2020-05-19 18:20 PATRICK KEROULAS 2020-05-21 15:33 ` Thomas Monjalon 0 siblings, 1 reply; 14+ messages in thread From: PATRICK KEROULAS @ 2020-05-19 18:20 UTC (permalink / raw) To: dev Hello, I'm trying to build an accurate capture device based on Mellanox Connect-X5 with following Some devices allow to query rte_eth_read_clock() that will return the current device timestamp. se> To: Viacheslav Ovsiienko <viacheslavo@nvidia. Added support Toggle navigation Patchwork DPDK Patches Bundles About this project Login; Register; Mail settings; 7002 diff mbox [dpdk-dev,24/28] fm10k VFs should not write the timestamp bit in the Tx descriptor. 3. This is enabled by default but can be turned off for ABI compatibility with DPDK R2. For instance user can set per port and per queue based However, if you will run into hardware limitations if you want to timestamp *all* packets. The DPDK driver is able to receive packets with nano-second precision hardware timestamp, and it can achieve zero packet loss even when receiving and transmitting small hardware: Optional description of the hardware used to create this file. g. From: Viacheslav Ovsiienko <viacheslavo@nvidia. My only issue is that I cannot find any mean to retrieve a timestamp for every single packet. In addition, DPDK‐based applications cannot achieve zero packet loss when the packet is small such as 64 B for beyond 10 Gigabit Ethernet. 8. For configuring and using UIO and VFIO frameworks, please also refer the documentation that comes with DPDK suite. But, if the following API got accepted applications can choose The ptpclient example provided by the DPDK is used to obtain the hardware timestamp of receiving packets. 0-rc0 Capture oper-sys: Linux 4. 05 29. Supports VLAN Hi, We are currently working on PTP implementation using DPDK with Intel X520-DA2 (82599 Controller). com The patch queries the timestamp formats supported by the hardware and sets the configuration values in queue context accordingly. Reworked memzone to be allocated by malloc and also support freeing. VLAN offload. Introduction. To use PTP functionality in DPDK, users can use DPDK example application “ptpclient” present in DPDK source code, ptpclient application uses DPDK IEEE1588 API to communicate with a PTP master clock to synchronize the time on NIC and, optionally, on I can process the packet and everything works fine. As stated in datasheets(8. 11. 7. Fixed Increased the port_id range from 8 bits to 16 bits in order to support more than 256 ports in DPDK. Examples: "x86 Virtual Machine" appname: Optional: application name recorded in the pcapng file. We were hoping the Intel E810 might provide the same support. Fixes: 92f2c6a30fe0 ("regex/mlx5: add send queue") Cc: the hardware offload features to activate, with dedicated fields for each statically configurable offload hardware feature provided by Ethernet devices, such as IP checksum or VLAN tag stripping for example. Added mbuf raw free API. This document provides the plan for testing the TSO (Transmit Segmentation Offload, also called Large Send offload - LSO) feature of Intel Ethernet Controller, including Intel 82599 10GbE Ethernet Controller and Intel® Ethernet Converged Network Adapter XL710-QDA2. Added support Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. net Subject: Re: [dpdk-dev] [PATCH 0/5] mlx5: add timestamp format support Date: Thu, 11 Mar 2021 11:05:19 +0100 [thread overview] Message-ID: <e60ff1ed-820b-e37c *Re: [dpdk-users] What is the 'unit of timestamp' assigned to mbuf packet in DPDK? 2019-11-22 14:48 ` Ferruh Yigit @ 2019-11-22 17:00 ` Gokul Bargaje 2019-11-22 17:05 ` Stephen Hemminger ` (2 more replies) 0 siblings, 3 replies; 7+ messages in thread From: Gokul Bargaje @ 2019-11-22 17:00 UTC (permalink / raw) To: Ferruh Yigit; +Cc: dev, users Thank you for the clarification. 11] regex/mlx5: support timestamp format @ 2021-05-19 18:35 Viacheslav Ovsiienko 2021-05-31 11:33 ` Xueming(Steven) Li 0 siblings, 1 reply; 2+ messages in thread From: Viacheslav Ovsiienko @ 2021-05-19 18:35 UTC (permalink / raw) To: stable; +Cc: bluca, xuemingl [ upstream commit Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP, Geneve, GTP. Is there a way to get this timestamp in dpdk? What I found The HCA PCI BAR provides the real time direct reading from hardware. Added support for Rx hardware timestamp offload. The received packets have timestamp values, and the timestamp values are incremented. While the explanation that DPDK developers gave is 236. Fixes: 86fc67fc9315 ("net/mlx5: create advanced RxQ object via DevX") Fixes: ae18a1ae9692 ("net/mlx5: support Tx hairpin queues") Fixes: 15c3807e86ab ("common/mlx5: support DevX QP operations") Cc: stable@dpdk For example i40e hardware can recognize more than 150 packet types. Also a benchmark to compare the RTT (Round Trip Time) of a DPDK based application versus non-DPDK setup would also give a better comparison. New Features. Is there a way to get this timestamp in dpdk? What I found when looking for this, it looks like `mbuf->timestamp` was deprecated [1] and was replaced in this [2] example by `rte_mbuf_timestamp_t` (in hwts_field). This is generally on by default: * [dpdk-stable] [PATCH] net/mlx5: fix timestamp initialization on empty clock queue @ 2021-07-28 14:23 Viacheslav Ovsiienko 2021-07-29 9:45 ` Raslan Darawsheh 0 siblings, 1 reply; 2+ messages in thread From: Viacheslav Ovsiienko @ 2021-07-28 14:23 UTC (permalink / raw) To: dev; +Cc: rasland, matan, stable The committing completions by clock queue might be hardware: Optional description of the hardware used to create this file. Invoking it with interface SOF_TIMESTAMPING_RX_HARDWARE gives a output like SIOCSHWTSTAMP: Operation not supported. Current mbuf Limitations. The 2 vlans have been stripped by the hardware and their tci are saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). I transmit traffic all time so I expected that the timestamp However, DPDK cannot give an accurate timestamp for every packet, and it is unable to truly reflect the order in which packets arrive at the network interface card. The received packets I am trying to get HW timestamping work in a dpdk multi-process environment. To build with a non-zero minimum tx packet length, set the above macro in your After PKT_RX_TIMESTAMP flag and fixed timestamp field deprecation and obsoleting, the dedicated Rx timestamp flag is supposed to be introduced and the shared dynamic timestamp field will be used to handle the timestamps on receiving datapath as well. A variety of tunneling protocols, L3 protocols and L4 protocols are combined to test as many scenarios as possible. , i310, X550) but I don't know a NIC that supports this on TX. + - In the free-running mode the timestamp counter is reset on power on + and 63-bit value provides over 1800 years of uptime till overflow. Does anyone know if the DPDK Intel ICE driver has or will have support for TX-Send-On-Timestamp capability similar to that in the DPDK Mellnox 5 driver ? We have very strict timing requirements for our TDM transceiver and have had good results with the DPDK mlx5 driver. Description¶. Test Case: Hardware Checksum Check L4 TX¶. the Receive Side Scaling (RSS) configuration when using multiple RX queues per port. [uses] rte_eth_rxconf,rte_eth_rxmode: offloads: timestamp is 4 ns for the 10Gbps implementation and 1 ns for 25Gbps implementation. The Timer library provides a timer service to DPDK execution units to enable execution of callback functions asynchronously. com> To: dev@dpdk. It has to be specified in the call to rte_timer_reset(). + - In the real-time mode + (configurable with ``REAL_TIME_CLOCK_ENABLE`` firmware settings), + the timestamp Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. While X520 NICs g DPDK is more invasive, "kernel bypass" DPDK exposes real/raw hardware queue DPDK exposes HW offloading capabilities AF_XDP abstracts actual queue implementation DPDK reimplements existing kernel drivers Actually can use AF_XDP to send/receive the frames DPDK uses spinning mode (need to dedicate processing cores) hardware: Optional description of the hardware used to create this file. Add a timestamp field. 6), register RXMTRL(31:16 bit) is default initialized to value Hello everyone, I have created a DPDK (21. 1. DPDK 18. The DPDK DPAA2 driver and DPDK 20. 76. com> () This patch adds support for the Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. Normally a DPDK application can invoke this function when RTE_ETH_EVENT_INTR_RESET event is detected, but can also use it to start a port reset in other circumstances. com>, <stable@dpdk. The calc_latency() callback is added to the TX port and is *Re: Does DPDK provide RX timestamps? 2024-09-08 23:07 ` Dmitry Kozlyuk @ 2024-09-08 23:21 ` Dpdk Newbie 0 siblings, 0 replies; 3+ messages in thread From: Dpdk Newbie @ 2024-09-08 23:21 UTC (permalink / raw) To: Dmitry Kozlyuk; +Cc: users Thank you for the clarification regarding hardware/NIC timestamp on i210 and ENA. Definition at line 159 of file rte_mbuf. The DPDK function rte_rdtsc() is used to add a cycle count timestamp to each packet (see the cycles section of the DPDK API Documentation for details). Most timestamps are passed in ts[0]. As for the precision that is achievable: ~10ns (depending on the NIC) with hardware support. File timestamp precision: nanoseconds (9) Packet size limit: file hdr: (not set) Number of packets: 6 File size: 740 bytes Data size Capture hardware: DPDK DPDK 19. A PMD assumed to support CRC stripping by default. All ethdev APIs which have port_id as parameter have been changed. *dpdk-stable] [PATCH] crypto/mlx5: support timestamp format @ 2021-08-31 20:40 Michael Baum 2021-09-01 7:48 ` Matan Azrad ` (2 more replies) 0 siblings, 3 replies; 6+ messages in thread From: Michael Baum @ 2021-08-31 20:40 UTC (permalink / raw) To: dev; +Cc: Matan Azrad, stable This patch adds support for the timestamp format settings for the receive and send some specialized hardware support to timestamp packets. com, thomas@monjalon. Logs and code analysis show that the rte_eth_timesync_enable interface is enabled successfully, but the PKT_RX_IEEE1588_PTP flag is not set in the ol_flags flag of the *dpdk-stable] [PATCH] crypto/mlx5: support timestamp format @ 2021-08-31 20:40 Michael Baum 2021-09-01 7:48 ` Matan Azrad ` (2 more replies) 0 siblings, 3 replies; 6+ messages in thread From: Michael Baum @ 2021-08-31 20:40 UTC (permalink / raw) To: dev; +Cc: Matan Azrad, stable This patch adds support for the timestamp format settings for the receive and send I am trying to get HW timestamping work in a dpdk multi-process environment. Hence, it is crucial to check whether firmware/hardware supports timestamp formats and configure queues accordingly, and this patchset also must be common/mlx5: add timestamp format support to DevX 2021-03-07 10:02 [dpdk-dev] [PATCH 0/5] mlx5: add timestamp format support Viacheslav Ovsiienko @ 2021-03-07 10:02 ` Viacheslav Ovsiienko The Media Transport Library leverages DPDK (Data Plane Development Kit) EAL (Environment Abstraction Layer including the memory and core management) to implement a highly efficient, real-time, and low-latency media transport solution. #define PKT_RX_SEC_OFFLOAD Hence, it is crucial to check whether firmware/hardware supports timestamp formats and configure queues accordingly, and this patchset also must be common/mlx5: add timestamp format support to DevX 2021-03-07 10:02 [dpdk-dev] [PATCH 0/5] mlx5: add timestamp format support Viacheslav Ovsiienko @ 2021-03-07 10:02 ` Viacheslav Ovsiienko Yes in DPDK version 19. 3411435-1-michaelba@nvidia. IEEE1588 Precise Time Protocol Tests¶. Added support However, if you will run into hardware limitations if you want to timestamp *all* packets. [implements] eth_dev_ops: filter_ctrl: Supports CRC stripping by hardware. 17. DPDK GRO lib with cbdma test plan; 238. We are currently working on PTP implementation using DPDK with Intel X520-DA2 (82599 Controller). Refer to DPDK Getting Started Guide for general information on running applications and the The PF driver is able to enable rx timestamp offload, the 64 bits timestamp is able to extracted from the flexible Rx descriptor and be stored in mbuf’s dynamic field. org> Subject: [dpdk-stable] [PATCH] crypto/mlx5: support timestamp format Date: Tue, 31 Aug 2021 23:40:15 +0300 [thread overview] Message-ID: <20210831204015. ts[1] used to hold hardware timestamps converted to system time. The callbacks feature requires that the CONFIG_RTE_ETHDEV_RXTX_CALLBACKS setting is on in the config/common_ config file that applies to the target. In this mode, packets are received one by one and are expected to be PTP V2 L2 Ethernet frames with the specific Ethernet type 0x88F7, containing PTP SYNC 6. PMD should advertise if it supports keeping CRC. On initialization the IEEE1588 functions read the system time to set their timestamp. From my perspective this is only relevant if the used hardware supports offloading of writing the timestamps. 11 are divided into per-port and per-queue offloads based on the configuration. 0 (DPDK 20. + - In the free-running mode the timestamp counter is reset on power on + and 63-bit value The VF driver is able to enable rx timestamp offload, the 64 bits timestamp is able to extracted from the flexible Rx descriptor and be stored in mbuf’s dynamic field. 2. Definition at line 267 of file rte_mbuf_dyn. 158. DPDK GRO lib test plan; 237. 文章浏览阅读657次，点赞2次，收藏2次。将整个转发的流程相关内容搞清楚后，再去和代码匹配学习，就会发现学习起来相对容易了很多。其实还是推荐大家多看一下dpdk的官方文档，这样会更准确更清晰。但看官方文档有时对小白确实不是一个很友好的入门的方法。 However, if you will run into hardware limitations if you want to timestamp *all* packets. DPDK Release 17. But the expected number of packets is 2/1. */ From: Tom Barbette <barbette@kth. +- Timestamps: + + - CQE timestamp field width is limited by hardware to 63 bits, MSB is zero. * [dpdk-dev] [PATCH 0/5] mlx5: add timestamp format support @ 2021-03-07 10:02 Viacheslav Ovsiienko 2021-03-07 10:02 ` [dpdk-dev] [PATCH 1/5] common/mlx5: add timestamp format support to DevX Viacheslav Ovsiienko ` (7 more replies) 0 siblings, 8 replies; 26+ messages in thread From: Viacheslav Ovsiienko @ 2021-03-07 10:02 UTC (permalink / raw) To: dev; +Cc: hardware: Optional description of the hardware used to create this file. Without specialized hardware support, to provide a relatively accurate • Timestamp, PTP • User metadata • • Space can be reserved on mempool allocation • Application configures mempool • Transparent for DPDK. Moved rte_mbuf_raw_free() except it differentiates descriptors which are held by the driver and not returned to the hardware. Hardware timestamps are passed in ts[2]. Definition at line 262 of file rte_mbuf_dyn. 6. This patch maps PCI resource to the process address space on demand and allows reading the real time timestamp In addition, we want to get the hardware timestamp of each received and sent packet through the rte_eth_timesync_read_rx_timestamp and +- Timestamps: + + - CQE timestamp field width is limited by hardware to 63 bits, MSB is zero. Depending on the version and configuration the hardware might support either FR or RT timestamps, or both in the same time on per queue basis. Definition at line 338 of file rte_ethdev. Extended port_id range from uint8_t to uint16_t. kernel_so_timestamp 内核 SO_TIMESTAMP 功能的示例代码 包含 ku-latency 和 send_data 是一对。 他们提供了一个示例代码来查看 SO_TIMESTAMP 如何提供接收时间戳。 main 提供了一种查看如何获取发送 However, DPDK cannot give an accurate timestamp for every packet, and it is unable to truly reflect the order in which packets arrive at the network interface card. Added new capability to the list of rx offloads for hw timestamp The PMDs how expose this capability will always have it enabled. org>, <xuemingl@nvidia. Timestamp offload. Compiling the Application. __extension__ uint16_t security: Enable rte_security Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. It uses rte_eth_read_clock(). If this flag is set, When PKT_RX_QINQ_STRIPPED is set, the flags (PKT_RX_VLAN | PKT_RX_VLAN_STRIPPED | PKT_RX_QINQ) must also be set. We develop a DPDK poll mode driver for FPGA devices. Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. RTE Ethernet Device API. hardware类型的是index 五元组随机变化的 QinQ 报文，需要实现如下需求： dpdk 程序 rx 时网卡自动剥掉外层 vlan 头 dpdk 程序 tx 时网卡自动添加一个指 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock. The dynamic Tx timestamp flag tells whether the field contains actual timestamp value for the packets being sent, this value can be used by PMD to schedule packet sending. Tunnel types: VXLAN, L3 VXLAN, VXLAN-GPE, GRE, MPLSoGRE, MPLSoUDP, IP-in-IP, Geneve. Unfortunately, I apparently don't have hardware available that is capable of hardware timestamps so I don't know for sure whether the test also succeeds for NICs that are hardstamp-capable. I have followed this previously commented issue: Linux kernel UDP reception timestamp but after several tests I got some problems when trying to get hardware reception timestamps. log @ 2022-01-04 19:15 Soumya Muralidhar 2022-01-05 16:17 ` Stephen Hemminger 0 siblings, 1 reply; 4+ messages in thread From: Soumya Muralidhar @ 2022-01-04 19:15 UTC (permalink / raw) To: dev [-- Attachment #1: Type: text/plain, Size: 2737 bytes --] Hi, I am looking to add timestamp while logging using rte_openlog_stream<https Hardware TSO for generic IP or UDP tunnel, including VXLAN and GRE. First of all, use ethtool -T "your NIC" to make sure your hardware supports the hardware timestamping feature. vae fdoww iojvvy whs dzo vojkhf pkv zyrzm hcaln tskay