PROBE::IPMIB.FRAGF(3stap)

💖 NAME 💖

probe::ipmib.FragFails — bestie, this one counts datagrams that got fragmented and Did Not Survive the process 😭

This page lives in the SNMP Information Tapset section of the SystemTap Tapset Reference (section 3stap, iykyk).

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🦋 SYNOPSIS 🦋

probe ipmib.FragFails {}

That's it. That's the whole vibe. No args, no flags, just a probe point showing up to do its little job 🎀

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🌸 VALUES 🌸

• op — the value you're adding to the counter. Default is 1, because obviously 💅
• skb — a pointer to the struct sk_buff that's being acted on. The packet in question, the main character fr

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✨ DESCRIPTION ✨

Okay so here's the tea 🍓 The packet that skb points at gets run through the function ipmib_filter_key. That's the bouncer at the door, basically.

If the packet passes that filter, it gets counted in the global FragFails counter. And that counter? It's the equivalent of SNMP's MIB IPSTATS_MIB_FRAGFAILS. So every time a datagram tries to fragment and fails, this probe is there to tally it up. Not me being emotionally invested in failed fragmentation 😭 but here we are.

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👑 SEE ALSO 👑

• tapset::ipmib(3stap)

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Heads up bestie: op defaults to 1, so if you don't pass anything, you're adding one. That's the whole default situation, no cap 💜

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SystemTap Tapset Reference Ver 🌈 September 2026 — that's a wrap, angel, go fragment responsibly 🫶✨