STRUCT RIO_MPORT_ATTR(9)

🦋 struct rio_mport_attr(9) 🦋

okay bestie, welcome to the Kernel API Manual — manual name folded in right here like a little name tag 🏷️. This page is all about struct rio_mport_attr, and it is lowkey just the attributes for a RIO mport device. No cap, it’s giving “small struct, big main character energy.” 💅

✨ NAME ✨

struct rio_mport_attr — RIO mport device attributes. That’s the whole vibe, and honestly? Iconic. 👑

🌸 SYNOPSIS 🌸

struct rio_mport_attr {
    int flags;
    int link_speed;
    int link_width;
    int dma_max_sge;
    int dma_max_size;
    int dma_align;
};

🎀 Members 🎀

• flags — mport device capability flags. Yes bestie, this is where the capability flags live. 🚩
• link_speed — SRIO link speed value (as defined by RapidIO specification) 🏎️ — the spec is the boss here, fr fr.
• link_width — SRIO link width value (as defined by RapidIO specification) 📏 — again, RapidIO specification said what it said.
• dma_max_sge — number of SG list entries that can be handled by DMA channel(s). SG list entries and DMA channels, together at last 💫.
• dma_max_size — max number of bytes in single DMA transfer (SG entry). Big transfer energy, but with a max 📦.
• dma_align — alignment shift for DMA operations (as for other DMA operations). Alignment shift, just like the other DMA operations, periodt 🎯.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/rio.h — and the whole struct squad is here: struct rio_switch(9), struct rio_switch_ops(9), struct rio_dev(9), struct rio_msg(9), struct rio_dbell(9), struct rio_mport(9), struct rio_net(9), struct rio_ops(9), struct rio_driver(9), struct rio_scan(9), struct rio_scan_node(9). Go bestie, read the whole friend group 🫶.

xoxo, your kernel bestie 💖 — this page’s source/version is ./include/linux, and the date is October 2026. struct rio_mport_attr(9) forever, periodt. 🫶🎀