🌕 Linux 硬體熱插拔事件：深入底層的技術細節
➤ 從核心廣播到使用者空間監聽的底層剖析
✤ https://arcanenibble.github.io/hardware-hotplug-events-on-linux-the-gory-details.html
當開發者需要偵測 Linux 系統中的 USB 熱插拔事件時，通常會首選 `libusb`。然而，若受限於特定應用場景無法使用該函式庫，開發者便需深入探討核心與使用者空間（userspace）之間的通訊機制。本文揭示了 `udev` 如何透過 `Netlink` 協議接收來自核心的硬體事件，並處理後續的廣播機制。作者通過剖析 `libudev` 的封包格式與 `Netlink` 運作原理，示範瞭如何直接在使用者空間監聽並解析這些底層訊息，從而繞過對高階函式庫的依賴。
+ 這篇文章真是及時雨！我之前一直以為監聽熱插拔必須依賴 libudev，沒想到透過 Netlink 處理 udev 廣播封包是完全可行的。
+ 雖然這確實提供了深入理解系統底層的機會
#Linux #系統程式設計 #USB #Netlink #udev
#Netlink
NetLink users can now browse another site with the Saturn's PlanetWeb browser: SegaXtreme! Not only that, they can download homebrew, too! Get the details in my story:
#sega #saturn #segasaturn #retrogaming #retrogames #videogames #netlink #segaxtreme
🌘 再會了，謝謝提供的魚：如何逃離 Linux 網路堆疊
➤ Cloudflare 如何透過客製化服務與 Netlink 介面，克服 Linux 網路堆疊的限制，實現 Soft-Unicast 的高效運作。
✤ https://blog.cloudflare.com/so-long-and-thanks-for-all-the-fish-how-to-escape-the-linux-networking-stack/
Cloudflare 在開發新功能時，常需突破 Linux 網路堆疊的極限。文章詳述了他們如何克服 Soft-Unicast（一種共享 IP 位址的方法）在 Linux 網路環境中的限制。傳統的 iptables 或 Netfilter 規則在處理大量 IP 位址與連接埠時面臨挑戰，尤其是在 Socket 綁定與封包重寫之間存在衝突。為瞭解決這個問題，Cloudflare 開發了名為「SLATFATF」（
#Linux網路 #Cloudflare #Soft-Unicast #網路堆疊 #iptables #conntrack #Netfilter #Netlink
Как ускорить управление сетевой подсистемой Linux: пишем Netlink-обертку на C++
Привет, Хабр! Меня зовут Егор Карамышев, в YADRO я разрабатываю ПО для коммутаторов семейства KORNFELD. В статье расскажу о реализованной нами С++ обертке для управления сетевой подсистемой Linux на основе протокола Netlink и библиотеки libnl3. В некоторых случаях она позволила на порядок ускорить работу функций конфигурирования. Разберемся, почему мы решили отказаться от подхода с системными вызовами, а также посмотрим на результаты временных тестов.
Cositas que se pueden hacer con #nftables 😃
Podés crear una app, por ejemplo, en #Python, y ejecutar las instrucciones de nftables directamente invocando al API de #netlink 🤯
No es necesario llamar a comandos de la shell, podés usar instrucciones nativas dentro de tu código! 🔥
Una ventaja más para aprender nftables y migrar tus configuraciones al nuevo framework! 😉
#gnu #linux #learning #juncotic #educacion #softwarelibre #opensource #freesoftware #sysadmin #devops #firewall #netfilter
Our next NetLink League online Saturn tournament is a cross-continental affair in Worldwide Soccer ‘98! Signups are open now — are you up for a little footie?
#sega #saturn #segasaturn #football #soccer #online #tournament #netlink #retrogaming #retrogames #videogames
Wanna chat on Discord from your Saturn? Those with a DreamPi and a NetLink or XBand modem can enjoy even more functionality now that SHIRO! has added Discross to our Discord server! Guest writer Shadowmask has the details:
#sega #saturn #segasaturn #retrogaming #retrogames #videogames #discord #netlink #xband #onlinegaming
The days of exchanging IP addresses to play Saturn games online over the NetLink Tunnel are over — SegaRPGFan just updated his software to use a new matchmaking server! Get the details in DoubleDime's story:
https://www.segasaturnshiro.com/2025/07/18/saturn-online-gets-matchmaking-server/
#sega #saturn #segasaturn #retrogaming #retrogames #videogames #onlinegaming #homebrew #netlink
Как отслеживать состояние сетевых интерфейсов на Linux
Всем привет! Меня зовут Тимур, в компании
I wonder how DSA network interfaces can be distinguished reliable. The port interfaces can be easily identified by the phys_port_name IFLA, but what is about the master interfaces?
I've access to a SoC which has a `dsa` and `eth0` interface (besides 4 port ifaces). Both have the same driver, the same businfo and the same mac address. How can they be distinguished at all, even if they have been renamed or moved into a netns?
Any ideas?
@jadedtwin AF pkt - it runs the show #promisc #noarp #netlink
#TIL routes on Linux can have two different netlink attributes (NLA) for the next-hop: RTA_GATEWAY and RTA_VIA. The latter is set when a NLRI from another address family is used, only.
(And luckily nobody uses net-tools anymore: the old route command just ignores the RTA_VIA NLA and the route looks like a connected one 🤷)
…
The NetLink League’s latest online Sega Saturn tournament came down to the wire for an exciting finish in Virtual On — find out how it all went down (thanks to Cecil H4rvey for writing this story!):
https://www.segasaturnshiro.com/2024/01/12/rasputin3000-wins-virtual-on-netlink-league-tournament/
#sega #saturn #segasaturn #retrogaming #onlinegaming #tournament #netlink #virtualon
Hacking Sonic 3D Blast, the Saturn MiSter core goes official and more in this week's Saturn news roundup:
https://www.segasaturnshiro.com/2023/10/13/news-roundup-for-the-week-of-oct-9/
#sega #saturn #segasaturn #sonic #sonicthehedgehog #retrogaming #misterFPGA #mister #netlink
Netlink റൂട്ടർ/മോഡത്തിന്റെ വാറന്റി പരിശോധിക്കാം!
https://www.youtube.com/shorts/mCX_qFtXRHw
#netlink #router #modem #ont #warranty #malayalamshorts #tutormalayalam #youtube #malayalam #shorts #youtubeshorts #മലയാളം #ടിപ്
While implementing the netns handling in ifstate I got aware that pyroute2 did not have a netlink RTM_NEWNSID request implementation.
I got https://github.com/svinota/pyroute2/pull/1121 merged into pyroute2 to add RTM_NEWNSID support.
Later I have noticed that my implementation does not work within netns (pyroute2 related, some details in issue https://github.com/svinota/pyroute2/issues/1123 ).
After this tangled journey ifstate netns dev branch now has its first netns superpowers 😎
@pete_wright @lattera As a result, from what I understand, we'll have an easier time detecting and reacting to events like an interface going down, a disk getting attached, etc. #netlink is not all about networking.
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