ntb_peer_highest_mw_idx(9)

💅 ntb_peer_highest_mw_idx(9) — the kernel API manual, bestie edition 🎀

okay so real talk, this page lives in the ntb_peer_highest_mw_idx(9) section of the Kernel API Manual and it's genuinely one of those tiny hype functions that does one thing and does it iconically. no notes. let's get into it 🦋

---

✨ NAME ✨

ntb_peer_highest_mw_idx — grab a memory window index for a given peer idx, and it starts from the highest index memory windows first. like, it goes top-down, main character energy only 💅

---

🌸 SYNOPSIS 🌸

int ntb_peer_highest_mw_idx (struct ntb_dev *ntb , int pidx );

that's the whole signature, no cap. she's compact.

---

🎀 ARGUMENTS 🎀

• ntb — the NTB device context. literally the device we're talking about, that's her.
• pidx — the peer port index. which peer we're doing this for, bestie.

---

🦋 DESCRIPTION 🦋

okay so this is like ntb_peer_resource_idx, except — and this is the whole vibe — it returns indexes starting with the last memory window index. so instead of counting up from the bottom, she's serving from the top. highest first. periodt. 👑

---

⭐ RETURN ⭐

the resource index to use for that peer. that's it, that's the return value, and honestly? she ate. 💖

---

🌈 SEE ALSO 🌈

Kernel file ./include/linux/ntb.h plus this whole friend group right here (iykyk):

• enum ntb_topo(9)
• enum ntb_speed(9)
• enum ntb_width(9)
• enum ntb_default_port(9)
• struct ntb_client_ops(9)
• struct ntb_ctx_ops(9)
• struct ntb_dev_ops(9)
• struct ntb_client(9)
• struct ntb_dev(9)
• ntb_register_client(9)
• ntb_unregister_client(9)
• ntb_register_device(9)
• ntb_unregister_device(9)
• ntb_set_ctx(9)
• ntb_clear_ctx(9)
• ntb_link_event(9)
• ntb_db_event(9)
• ntb_msg_event(9)
• ntb_default_port_number(9)
• ntb_default_peer_port_count(9)
• ntb_default_peer_port_number(9)
• ntb_default_peer_port_idx(9)
• ntb_port_number(9)
• ntb_peer_port_count(9)
• ntb_peer_port_number(9)
• ntb_logical_port_number(9)
• ntb_peer_logical_port_number(9)
• ntb_peer_port_idx(9)
• ntb_link_is_up(9)
• ntb_link_enable(9)
• ntb_link_disable(9)
• ntb_mw_count(9)
• ntb_mw_get_align(9)
• ntb_mw_set_trans(9)
• ntb_mw_clear_trans(9)
• ntb_peer_mw_count(9)
• ntb_peer_mw_get_addr(9)
• ntb_peer_mw_set_trans(9)
• ntb_peer_mw_clear_trans(9)
• ntb_db_is_unsafe(9)
• ntb_db_valid_mask(9)
• ntb_db_vector_count(9)
• ntb_db_vector_mask(9)
• ntb_db_read(9)
• ntb_db_set(9)
• ntb_db_clear(9)
• ntb_db_read_mask(9)
• ntb_db_set_mask(9)
• ntb_db_clear_mask(9)
• ntb_peer_db_addr(9)
• ntb_peer_db_read(9)
• ntb_peer_db_set(9)
• ntb_peer_db_clear(9)
• ntb_peer_db_read_mask(9)
• ntb_peer_db_set_mask(9)
• ntb_peer_db_clear_mask(9)
• ntb_spad_is_unsafe(9)
• ntb_spad_count(9)
• ntb_spad_read(9)
• ntb_spad_write(9)
• ntb_peer_spad_addr(9)
• ntb_peer_spad_read(9)
• ntb_peer_spad_write(9)
• ntb_msg_count(9)
• ntb_msg_inbits(9)
• ntb_msg_outbits(9)
• ntb_msg_read_sts(9)
• ntb_msg_clear_sts(9)
• ntb_msg_set_mask(9)
• ntb_msg_clear_mask(9)
• ntb_msg_read(9)
• ntb_peer_msg_write(9)
• ntb_get_dma_dev(9)
• ntb_peer_resource_idx(9)

---

ngl that's a long list but every single one of them is a real one, don't skip her friends 🫶

---

and that's the page!! sign-off time: this one comes from source ./include/linux, dated October 2026, and it's filed under ntb_peer_highest_mw_idx(9) forever and ever. slay, bye bestie!! 💜✨🧚