hfi1_alloc_rx(9)

💖 hfi1_alloc_rx — like, the whole glow-up for your rx setup 💖

okay so bestie, welcome to the Kernel API Manual ✨ this page is literally all about hfi1_alloc_rx(9) and honestly? it's giving "small function, big responsibility" energy. let's get into it 🫶

---

✨ NAME ✨

hfi1_alloc_rx — ngl it just allocates the rx support structure 💅 that's it, that's the whole vibe.

---

🌸 SYNOPSIS 🌸

int hfi1_alloc_rx (struct hfi1_devdata *dd );

it returns an int, it takes one pointer, and it's lowkey iconic for it 😌

---

🎀 ARGUMENTS 🎀

• dd — the hfi1 dev data, aka the main character of this whole operation 👑

---

🦋 DESCRIPTION 🦋

so here's the tea ☕ this function allocates the rx structure — and that structure is what supports gathering the receive resources and the dummy netdev. yes, both. she does both. multi-tasking queen 💅✨

and ooh, important: it updates the dd struct pointer upon success 🫶 like, on the way out, dd comes back changed. no cap, that's the whole point.

---

🔥 RETURN 🔥

• 0 — success, slay 🎉
• -error — on failure 😭 (yes, it's literally written as -error, like a negative error value. that's the notation, we don't argue with it, periodt.)

fr fr, vibe check your return value before you assume everything's cute 💀

---

🧚 SEE ALSO 🧚

the kernel file in question, iykyk:

./drivers/infiniband/hw/hfi1/netdev_rx.c

and the whole friend group of related functions, all in (9) section, all linked together 🌈:

• hfi1_num_netdev_contexts(9)
• hfi1_netdev_rx_init(9)
• hfi1_netdev_rx_destroy(9)
• hfi1_netdev_enable_queues(9)
• hfi1_netdev_add_data(9)
• hfi1_netdev_remove_data(9)
• hfi1_netdev_get_data(9)
• hfi1_netdev_get_first_data(9)

go read those too, they're all part of the same era bestie 💜

---

---

and that's the page!! 🎀 brought to you straight out of ./drivers/infiniband/hw/hfi1 — oh and the date stamp says October 2026, so mark your calendar, this is officially a future classic ⭐💖 mwah, go allocate something ✨