DPDK采用批量同时处理多个包,再用向量编程,一个周期内对所有包进行处理。比如,memcpy就使用SIMD来提高速度。 cpu affinity 回到顶部 3.6 XDP(eXpressData Path) 参考:DPDK and XDP xdp代表eXpress数据路径,使用ebpf 做包过滤,相对于dpdk将数据包直接送到用户态,用用户态当做快速数据处理平面,xdp是在驱动层创建了一个...
Linux中的AF_PACKET套接字允许应用程序接收和发送原始数据包。这个特定于linux应用程序绑定到AF_PACKET套接字,并允许DPDK或VPP应用程序通过内核发送和接收原始数据包。为了提高Rx和Tx性能,该实现使用PACKET_MMAP机制,它提供了一个在用户空间和内核之间共享的环形缓冲区,用于发送和接收数据包。这样有助于减少用户空间和内...
前面有一篇文章中《Flexiwan 架构及功能说明》介绍了Flexiwan公司lte模组使用方式。因为LTE 接口是不支持直接被 DPDK 接管的,LTE 设备是由 Linux 系统拥有和管理的,我们创建一个 tap 接口连接到 VPP 以执行路由和服务。在Linix系统中通过默认路由从LTE接口进行NAT转换后送到公网。如下图所示: ...
Pcap++- a library for intercepting and sending packets, providing network and NIC info, stats, etc. It is actually a C++ wrapper for packet capturing engines such as libpcap, WinPcap, Npcap, DPDK and PF_RING Common++- a library with some common code utilities used by both Packet++ and ...
runmode-dpdk.c runmode-dpdk.h runmode-erf-dag.c runmode-erf-dag.h runmode-erf-file.c runmode-erf-file.h runmode-ipfw.c runmode-ipfw.h runmode-napatech.c runmode-napatech.h runmode-netmap.c runmode-netmap.h runmode-nflog.c runmode-nflog.h runmode-nfq.c runmode-nfq.h r...
>> on socket IFF_RUNNING flag. >> >> Signed-off-by: Gur Stavi <gur.st...@huawei.com> >> --- >> v2: >> * return error on ioctl error > > Acked-by: Stephen Hemminger <step...@networkplumber.org> > Applied to dpdk-next-net/main, thanks....
The statistics in af_packet driver do not follow the standard practice of other drivers: - Statistics should be maintained as 64 bit even on 32 bit. - Remove the tx_error counter since it was not correct. When transmit ring is full it is not an error and ...
pf-ring zc和dpdk均可以实现数据包的零拷贝,两者均旁路了内核,但是实现原理略有不同。pf-ring zc通过zc驱动(也在应用层)接管数据包,dpdk基于UIO实现。 一、UIO+mmap 实现零拷贝(zero copy) 参考:The Userspace I/O HOWTO 一个设备驱动的主要任务有两个: ...
CNDP does not replace DPDK (Data Plane Development Kit), which provides the highest performance for packet processing. DPDK implements user space drivers, bypassing the kernel drivers. This approach of rewriting drivers is one reason DPDK achieves the highest performance for packet processing. DPDK al...
DPDK And PF_RING Support The Data Plane Development Kit (DPDK) is a set of data plane libraries and network interface controller drivers for fast packet processing. PF_RING™ is a new type of network socket that dramatically improves the packet capture speed. Both frameworks provide very fast...