lpfc_els_free_data(9)

📦 version 7.3.1, in nixpkgs unstable

✨ lpfc_els_free_data ✨

okay so this is a page from the Kernel API Manual (yes, the kernel has its own manual, we stan) and it's about lpfc_els_free_data, a lil function that cleans up after your DMA buffers 🧹💖

🎀 NAME 🎀

lpfc_els_free_data — frees the lpfc dma buffer and the data structure that's hanging out with an iocb, bestie 💅

🦋 SYNOPSIS 🦋

int lpfc_els_free_data (struct lpfc_hba *phba , struct lpfc_dmabuf
*buf_ptr1 );

literally that's the whole call, no cap ✨

🌸 ARGUMENTS 🌸

  • phba — pointer to the lpfc hba data structure. that's your host bus adapter babe, the main character 👑
  • buf_ptr1 — pointer to the lpfc DMA buffer data structure. the buffer bestie in question 🫶

💜 DESCRIPTION 💜

so this routine's whole job is releasing the lpfc DMA (Direct Memory Access) buffer(s) that are associated with a command IOCB, and it sends them back to the lpfc DMA buffer pool 🏠✨

the way it works is honestly iconic: first it checks whether there's an lpfc DMA buffer associated with the response of the command IOCB 👀. if there is, that one gets released first — before it releases the lpfc DMA buffer associated with the IOCB itself. order matters, periodt 💅

Return code 0 — successfully released lpfc DMA buffer (and currently, it always returns 0, she's consistent like that 😌)

🌈 SEE ALSO 🌈

the kernel file ./drivers/scsi/lpfc/lpfc_els.c and honestly the entire extended friend group 🫂💖:

ngl that SEE ALSO list is giving "tagged everyone in the group chat" energy 😭 but every single one of them is fr fr important, so go read them too 🫶

and that's the page!! 🎀 it lives under ./drivers/scsi/lpfc and this particular glow-up is dated October 2026, filed under lpfc_els_free_data(9). mwah, go free those buffers bestie 💋✨💖

📦 where this page comes from