PROBE::LINUXMIB.LI(3stap)

💖 PROBE::LINUXMIB.LI — the probe::linuxmib.ListenDrops page, bestie edition

okay so real talk, this one lives in the SNMP Information Tapset, and it's a 3stap manual page — you know, the SystemTap tapset reference crowd. she's niche, she's specific, she's lowkey iconic for it. let's get into it 🫶

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✨ NAME ✨

probe::linuxmib.ListenDrops — literally just counting up how many times a connection request got dropped 💀

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🌸 SYNOPSIS 🌸

probe linuxmib.ListenDrops {}

that's it. that's the whole vibe. no args, no fuss, just a probe hanging out and waiting for the moment to happen ✨

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🎀 VALUES 🎀

the values that show up when this probe fires — she gives you two, and they're both kinda the whole point:

• sk — a pointer to the struct sock that's being acted on. like, the actual socket in question, the main character of this moment 👑
• op — the value that gets added to the counter. and bestie, the default is 1. so if you don't say anything, she adds one. cute, simple, no notes 🌸

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🦋 DESCRIPTION 🦋

okay so here's the tea ☕

the packet that sk is pointing at gets run through the function linuxmib_filter_key. that's the bouncer at the door, checking the list 🚪

if the packet passes the filter, it gets counted in the global ListenDrops counter. and before you ask — yes, that's the same thing as SNMP's MIB LINUX_MIB_LISTENDROPS. same number, different name tag, iykyk 💅

so basically: packet shows up → filter says "you're good" → counter goes up. and this probe is your little notification every time that happens 🔔

ngl this probe is not the one doing the counting itself, okay? it fires on the tapset's counter thing, and the filter decides. don't @ me, that's just what the page says 🙈

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🔥 SEE ALSO 🔥

• tapset::linuxmib(3stap)

like obviously go read the tapset page too, she's the mothership 🌈

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that's the whole page, bestie. she ate and left no crumbs 💅✨

SystemTap Tapset Reference · September 2026 — mwah, ily, go count some drops 🎀🦋💖