lpfc_idiag_queacc_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 lpfc_idiag_queacc_write(9) — like, the kernel API manual bestie 🎀

okay so picture this: it's a Kernel API Manual page (that's the manual name, slay) and today's main character is lpfc_idiag_queacc_write. she's the one who does the syntax check AND the setup for the idiag queacc commands. no cap, she does both. ✨

🌸 NAME 🌸

lpfc_idiag_queacc_write — syntax check + set up idiag queacc commands 💖

🦋 SYNOPSIS 🦋

ssize_t lpfc_idiag_queacc_write (struct file *file , const char __user
*buf , size_t nbytes , loff_t *ppos );

like, that's the whole signature, copy it exactly bestie, don't @ me 🫶

✨ ARGUMENTS ✨

  • file — the file pointer to read from. yes queen, that one. 💅
  • buf — the buffer you copy the user data from 🍓
  • nbytes — the number of bytes to get 🌸
  • ppos — the position in the file to start reading from ⭐

🔥 DESCRIPTION 🔥

okay so here's the vibe: this routine gets the debugfs idiag command struct from user space (yes, from user space, respect the border 😭) and then it does the syntax check for the port queue read (dump) or write (set) command, accordingly. her range is iconic. 👑

in the case of a port queue read command, she sets up the command in the idiag command struct so the next debugfs read operation has everything it needs. she's a planner, she's a giver. 🧚

in the case of a port queue write operation, she just goes ahead and executes the write operation into the port queue entry accordingly. main character energy, no hesitation. 🔥

she returns the nbytges passing in from debugfs user space when successful — and yes the page literally says nbytges, the typo is lowkey part of the lore now, don't fix it, we respect the original 💀. and in case of error conditions? she returns proper error code back to the user space. she would never leave you on read. 🙈

👑 SEE ALSO 👑

kernel file ./drivers/scsi/lpfc/lpfc_debugfs.c — go read the source, iykyk 📖

and now, the extended universe, because she has so many friends and literally every single one of them gets named:

like, that's fifty-nine of them. she knows everyone. the group chat is huge. 💜

fr fr, if you're cross-referencing any of these, keep the (9) — that's the section number, not a vibe. 💅

and that's the page bestie!! 🌈 the source lives at ./drivers/scsi/lpfc and this whole thing is dated October 2026 ⭐ — mwah, go forth and dump your port queues responsibly 🫶💖✨

📦 where this page comes from