tx_link_width(9)

💅 tx_link_width(9) 💅

okay so bestie, this page is from the Kernel API Manual, and it's all about one tiny but iconic function: tx_link_width. She converts a link-width bitmask into an integer value that represents the actual link width. lowkey useful, highkey slay. ✨

💖 NAME 💖

tx_link_width — convert a link width bitmask to an integer value representing the actual link width.

🌸 SYNOPSIS 🌸

u16 tx_link_width (u16 link_width );

🎀 ARGUMENTS 🎀

• link_width — the width of the active link. that's the input, bestie 🫶

⭐ RETURN ⭐

returns the index of the bit set in the link_width var. literally the bit index, no cap 💅

🦋 DESCRIPTION 🦋

so the function converts and returns the index of the bit that's set — and that bit is the one indicating the current link width. it's giving "small function, main character energy." ✨

🔥 SEE ALSO 🔥

• Kernel file ./drivers/infiniband/hw/hfi1/mad.c — plus the whole bestie crew: get_pkeys(9), set_pkeys(9), get_xmit_wait_counters(9), hfi1_pkey_validation_pma(9), hfi1_process_mad(9) 👑

mwah 💋 this page lives under ./drivers/infiniband/hw/hfi1 and it's dated October 2026 — periodt. 🫶🌈