dpdk不仅提供针对物理和虚拟网卡的pmd驱动(Poll Mode Drivers),还提供两个纯软件的pmd驱动,libpcap pmd就是其中之一。Libpcap pmd使用libpcap库读写报文,读写的源可以是文件,也可以是使用Linux内核驱动的物理网卡。 在没有或不方便配置物理网卡的机器上,使用libpcap pmd可以帮助dpdk应用开发人员进行功能性测试或代码...
6. libpcap绕过了Linux内核收包流程中协议栈部分的处理,使得用户空间API可以直接调用套接字PF_PACKET从链路层驱动程序中获得数据报文的拷贝,将其从内核缓冲区拷贝至用户空间缓冲区(第4次拷贝) 3.2 libpcap-mmap libpcap-mmap是对旧的libpcap实现的改进,新版本的libpcap基本都采用packet_mmap机制。PACKET_MMAP通过mma...
dpdk不仅提供针对物理和虚拟网卡的pmd驱动(Poll Mode Drivers),还提供两个纯软件pmd驱动,libpcap pmd就是其中之一。Libpcap pmd使用libpcap库读写报文,读写的源可以是文件,也可以是使用Linux内核驱动的物理网卡。 在没有或不方便配置物理网卡的机器上,使用libpcap pmd可以帮助dpdk应用开发人员进行功能性测试或代码调...
DPDK 是数据包转发处理套件。 允许用户空间的进程通过 DPDK 的库直接访问网卡,无需经过内核(也就是所谓bypass kernel,或user space stack)。 首先明确一个概念,它不是协议栈,和 TCP/IP 不是对等的概念。不提供二层、三层转发功能、防火墙、ACL 等功能,但通过 DPDK 可以开发出上述功能。 其次,它是一套强大的 u...
著名的软件TCPDUMP就是在Libpcap的基础上开发而成的。Libp... cococo点点 4 32902 DPDK收发包处理流程---(一)网卡初始化 2014-11-20 13:55 − 本文基于DPDK-1.8.0分析。 网卡驱动模型一般包含三层,即,PCI总线设备、网卡设备以及网卡设备的私有数据结构,即将设备的共性一层层的抽象,PCI总线设备包含网卡...
1. Pcap-dpdk provides libpcap the ability to use DPDK with the device name as dpdk:{portid}, such as dpdk:0.2. DPDK is a set of libraries and drivers for fast packet processing. (https://www.dpdk.org/) 3. The testprogs/capturetest provides 6.4Gbps/800,000 pps on Intel 10-Giga...
1. Pcap-dpdk provides libpcap the ability to use DPDK with the device name as dpdk:{portid}, such as dpdk:0.2. DPDK is a set of libraries and drivers for fast packet processing. (https://www.dpdk.org/) 3. The testprogs/capturetest provides 6.4Gbps/800,000 pps on Intel 10-Giga...
Recently I have compiled tcpdump with libpcap that supports DPDK. When there is network traffic on the interface, I am unable to collect packets. I'm getting the following issue currently when I try to look at any interfaces: /opt/tcpdump/bin/tcpdump -D PANIC in rte_eth_dev_shared_dat...
PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, Npcap,
1. Pcap-dpdk provides libpcap the ability to use DPDK with the device name as dpdk:{portid}, such as dpdk:0. 2. DPDK is a set of libraries and drivers for fast packet processing. (https://www.dpdk.org/) 3. The testprogs/capturetest provides 6.4Gbps/800,000 pps on Intel 10-Gi...