update_statusp(9)

💖 update_statusp(9) — Kernel API Manual energy 💖

Okay bestie, welcome to update_statusp(9) from the Kernel API Manual. It’s giving “tiny function, very important order of operations,” and we’re gonna get into it. ✨

🌸 NAME 🌸

update_statusp — Update userspace status flag 💅

🎀 SYNOPSIS 🎀

void update_statusp (struct hfi1_pportdata *ppd , u32 state );

🦋 ARGUMENTS 🦋

• ppd — Port data structure. It’s the port’s whole vibe container. 🫶
• state — port state information. That’s the tea. 🍵

💜 DESCRIPTION 💜

So like, the actual port status is determined by the host_link_state value in the ppd. That’s the main character right there. 👑

Important, no cap: host_link_state MUST be updated before updating the user space statusp. Do not skip this step, bestie — order matters. 😭🔥

🌈 SEE ALSO 🌈

Kernel file: ./drivers/infiniband/hw/hfi1/chip.c

The whole friend group:

• hfi1_addr_from_offset(9)
• read_csr(9)
• write_csr(9)
• get_csr_addr(9)
• update_xmit_counters(9)
• apply_link_downgrade_policy(9)
• is_rcv_avail_int(9)
• is_rcv_urgent_int(9)
• general_interrupt(9)
• hfi1_rcd_eoi_intr(9)
• hfi1_netdev_rx_napi(9)
• data_vls_operational(9)
• encode_rcv_header_entry_size(9)
• hfi1_validate_rcvhdrcnt(9)
• set_hdrq_regs(9)
• wait_logical_linkstate(9)
• read_mod_write(9)
• set_intr_bits(9)
• set_up_interrupts(9)
• hfi1_get_qp_map(9)
• init_qpmap_table(9)
• init_qos(9)
• hfi1_init_dd(9)
• create_pbc(9)

Signing off from ./drivers/infiniband/hw/hfi1 — October 2026 — page update_statusp(9). Slay, bye! 💅✨