hfi1_create_rcvhdrq(9)

🌸 hfi1_create_rcvhdrq(9) 🌸

okay bestie, this one is straight from the Kernel API Manual, and it's all about creating a receive header queue. yes we are in kernel internals, hydrate first 🧚💖

💖 NAME 💖

hfi1_create_rcvhdrq — create a receive header queue 🎀

✨ SYNOPSIS ✨

int hfi1_create_rcvhdrq (struct hfi1_devdata *dd , struct hfi1_ctxtdata *rcd );

🫶 ARGUMENTS 🫶

• dd — the hfi1_ib device. the device in question, main character energy.
• rcd — the context data. the context bestie we're working with.

🔥 DESCRIPTION 🔥

okay so the memory for this has to be contiguous (from an i/o perspective), and it must be DMA'able. and bestie, that means for some systems it will go through an IOMMU, or be forced into a low address range. that's the whole vibe check, no cap. 💅✨

🌈 SEE ALSO 🌈

like all the linked lore, bestie:

• Kernel file ./drivers/infiniband/hw/hfi1/init.c
• hfi1_rcd_free(9)
• hfi1_rcd_put(9)
• hfi1_rcd_get(9)
• allocate_rcd_index(9)
• hfi1_rcd_get_by_index_safe(9)
• hfi1_rcd_get_by_index(9)
• hfi1_free_ctxt(9)
• init_after_reset(9)
• create_workqueues(9)
• destroy_workqueues(9)
• enable_general_intr(9)
• hfi1_init(9)
• shutdown_device(9)
• hfi1_free_ctxtdata(9)
• hfi1_free_devdata(9)
• hfi1_alloc_devdata(9)
• hfi1_setup_eagerbufs(9)

mwah 💋 ok bye: source/version is ./drivers/infiniband/hw/hfi1, and this cutie is dated October 2026. go create those receive header queues, periodt. 👑✨