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Peter N. M. Hansteen<p>dhcpd(8): use UDP sockets instead of BPF <a href="https://www.undeadly.org/cgi?action=article;sid=20250613111800" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">undeadly.org/cgi?action=articl</span><span class="invisible">e;sid=20250613111800</span></a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://mastodon.social/tags/dhcpd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dhcpd</span></a> <a href="https://mastodon.social/tags/tcpip" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tcpip</span></a> <a href="https://mastodon.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a> <a href="https://mastodon.social/tags/udp" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>udp</span></a> <a href="https://mastodon.social/tags/bpf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bpf</span></a> <a href="https://mastodon.social/tags/development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>development</span></a> <a href="https://mastodon.social/tags/newfeature" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>newfeature</span></a> <a href="https://mastodon.social/tags/testing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>testing</span></a> <a href="https://mastodon.social/tags/freesoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freesoftware</span></a> <a href="https://mastodon.social/tags/libresoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>libresoftware</span></a></p>
r1w1s1Improving network filtering performance with Bpfilter<br>(free link) <a href="https://lwn.net/SubscriberLink/1017705/ca0af831379ca794/" rel="nofollow noopener" target="_blank">https://lwn.net/SubscriberLink/1017705/ca0af831379ca794/</a><br><br>From servers in a data center to desktop computers, many devices communicating on a network will eventually have to filter traffic, whether for security or performance reasons. Bpfilter is a project that allows packet filtering to be done with BPF, which can be faster than other mechanisms. Even small performance improvements in this area can lead to significant gains.<br><br><a href="https://snac.bsd.cafe?t=linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#linux</a> <a href="https://snac.bsd.cafe?t=kernel" class="mention hashtag" rel="nofollow noopener" target="_blank">#kernel</a> <a href="https://snac.bsd.cafe?t=bpfilter" class="mention hashtag" rel="nofollow noopener" target="_blank">#bpfilter</a> <a href="https://snac.bsd.cafe?t=bpf" class="mention hashtag" rel="nofollow noopener" target="_blank">#bpf</a><br>
Peter N. M. Hansteen<p>bpflogd(8) imported into -current <a href="https://www.undeadly.org/cgi?action=article;sid=20250507113848" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">undeadly.org/cgi?action=articl</span><span class="invisible">e;sid=20250507113848</span></a> <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://mastodon.social/tags/bpflogd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bpflogd</span></a> <a href="https://mastodon.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a> <a href="https://mastodon.social/tags/bpf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bpf</span></a> <a href="https://mastodon.social/tags/pcap" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pcap</span></a> <a href="https://mastodon.social/tags/packetcapture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>packetcapture</span></a> <a href="https://mastodon.social/tags/packetlogging" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>packetlogging</span></a> <a href="https://mastodon.social/tags/devops" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>devops</span></a> <a href="https://mastodon.social/tags/development" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>development</span></a> <a href="https://mastodon.social/tags/current" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>current</span></a> <a href="https://mastodon.social/tags/freesoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freesoftware</span></a> <a href="https://mastodon.social/tags/libresoftware" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>libresoftware</span></a></p>

`bpftop` is now available in Fedora;a command-line tool designed to streamline the performance optimization and monitoring of eBPF programs, providing a dynamic real-time view.

Install with `sudo dnf install bpftop`
More info: packages.fedoraproject.org/pkg

packages.fedoraproject.orgbpftop - Fedora PackagesView bpftop in the Fedora package repositories. bpftop: Dynamic real-time view of running eBPF programs
#Fedora#BPF#Linux

The "#eBPF for #Linux Admins" series from Ansil Hameed grew and right now contains seven parts.

It among others covers how to write a "eBPF program to block all packets via XDP"[1] and how to "block a TCP port of an interface instead of all packet"[2].

This article series based on his "journey to demystify eBPF" also covers some eBPF basics and things related to it: ansilh.com/tags/ebpf/

[1] ansilh.com/posts/04-ebpf-for-l
[2] ansilh.com/posts/05-ebpf-for-l

#eBPF support for Human Interface Devices (HID) [e.g. mice, keyboards, …] in now in #Linux-next and thus slated for inclusion in #LinuxKernel 6.2.

If you wonder what this is about, check out this article (lwn.net/Articles/909109/ ), the latest submission (lore.kernel.org/all/2022110315 ), or the docs on HID-#BPF(git.kernel.org/pub/scm/linux/k)

Seems like #introducton is common here:

👋I have been working in tech for almost ~7 years now. In the past I've dived into different subsystems of #linux kernel as part of my day jobs and I was associated with #outreachy as a (volunteer) linux kernel coordinator for few years. These days I'm getting paid to work on #bpf based profilers.

I also like sharing pictures from my daily walks, general life rants and mental health related things (personal experiences) on my public social media.🙂