__lpfc_mbuf_free(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __lpfc_mbuf_free — NAME ✨

Okay so bestie, welcome to the Kernel API Manual 💖 — this one's about __lpfc_mbuf_free, which is literally the function that frees an mbuf from the lpfc_mbuf_pool PCI pool (and yes, it's the locked one, iykyk 🔒).

🌸 SYNOPSIS 🌸

void __lpfc_mbuf_free (struct lpfc_hba * phba , void *virt , dma_addr_t dma );

🎀 ARGUMENTS 🎀

  • phba — the HBA that owns the pool we're returning stuff to, like it's the one holding the receipts 🧾
  • virt — the mbuf you wanna free, the actual star of the show ⭐
  • dma — the DMA-mapped address of the lpfc_mbuf_pool that's getting freed 🦋

🔥 DESCRIPTION 🔥

So here's the vibe check: this function takes an mbuf from lpfc_mbuf_pool and returns it to the lpfc_mbuf_safety_pool — but only if it's below its max_count 💅. If it's not below max_count? Then it just frees the mbuf instead, periodt. Two paths, one function, no cap. 👑

🫶 NOTES 🫶

Bestie. Listen. 👀 This must be called with phba->hbalock held, so that access to lpfc_mbuf_safety_pool is synchronized. Do not skip this, fr fr — the lock is the whole point. 😭

💀 RETURN 💀

None. That's it. Nothing comes back. It's giving "I did my job and left" energy 🙈.

🌈 SEE ALSO 🌈

Kernel file ./drivers/scsi/lpfc/lpfc_mem.c ✨ plus the whole friend group:

And that's the whole page, bestie — mwah 💋 This cutie lives in ./drivers/scsi/lpfc, dated October 2026, and it's filed under __lpfc_mbuf_free(9) in case you ever need to find it again 🎀✨🦋

📦 where this page comes from