
Timestamping — The Linux Kernel documentation
Generates timestamps on reception, transmission or both. Supports multiple timestamp sources, including hardware. Supports generating timestamps for stream sockets. This socket option …
I Understand what is the precision time protocol (PTP) and its modes of operation. I Have a first glance at what is a packet timestamping and how the kernel supports it.
Precision Time Protocol - Wikipedia
The Precision Time Protocol (PTP) is a protocol for clock synchronization throughout a computer network with relatively high precision and therefore potentially high accuracy. In a local area …
How SKBs work
The socket buffer, or "SKB", is the most fundamental data structure in the Linux networking code. Every packet sent or received is handled using this data structure. The most fundamental …
IEEE 1588/802.1AS标准、硬件,Linux软件学习建议 - CSDN博客
2021年5月8日 · 本文提供了学习IEEE1588/802.1AS时钟同步技术的全面指南,从系统框图解析到标准学习,再到PTP软件协议栈和Linux1588驱动的探究,最后涉及硬件原理。通过阅读标准 …
linux 时间戳,打戳代码分析,用于PTP报文协议 - 小雨点的梦想
2020年3月22日 · 感觉应该是SW,因为CPTS没使能,没用硬件PTP;下面的软件时戳也需要重新找; skb_tstamp_tx (skbuff.c) 硬件用入参hwtstamps, 软件时戳直接此时读取时间,二者 …
linux/drivers/net/ethernet/cadence/macb_ptp.c at master - GitHub
static int gem_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) struct macb *bp = container_of(ptp, struct macb, ptp_clock_info); struct timespec64 now, then = …
Linux报文硬件时间戳,linux 时间戳,打戳代码分析,用于PTP报文 …
2021年5月5日 · 本文详细探讨了Linux内核中关于报文硬件时间戳的设置和使用,包括通过setsockopt设置软硬件时间戳,从recvmsg调用UDP获取时间戳,以及在发送和接收数据包时 …
Linux 6.13.7 - lwn.net
5 天之前 · From:: Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org> To:: linux-kernel-AT-vger.kernel.org, akpm-AT-linux-foundation.org, torvalds-AT-linux-foundation.org, stable ...
X710 received SYNC without timestamp - CSDN博客
2023年11月25日 · 而skb的hwtstamps是在网卡驱动中设置得,x710 是. i40e_process_skb_fields ->i40e_ptp_rx_hwtstamp ->i40e_ptp_convert_to_hwtstamp(skb_hwtstamps(skb),ns);