STRUCT F_RNDIS_OPTS(9)

✨ struct f_rndis_opts(9) ✨

okay so bestie, this is the Kernel API Manual entry for struct f_rndis_opts — it's giving “RNDIS function options” and we're gonna go through every single field, no cap. 💅

💖 NAME 💖

struct f_rndis_opts — RNDIS function options 🫶

✨ SYNOPSIS ✨

struct f_rndis_opts {
    struct usb_function_instance    func_inst;
    u32 vendor_id;
    const char                      *manufacturer;
    struct net_device               *net;
    int bind_count;
    bool borrowed_net;
    struct config_group             *rndis_interf_group;
    struct usb_os_desc              rndis_os_desc;
    char rndis_ext_compat_id[16];
    u8 class;
    u8 subclass;
    u8 protocol;
    struct mutex                    lock;
    int refcnt;
 };

🎀 Members 🎀

• func_inst — the USB function instance, literally the main character of this struct. 💫
• vendor_id — the Vendor ID. iconic number behavior. 🔥
• manufacturer — the Manufacturer string, cute little text pointer. 🎀
• net — the net_device associated with the RNDIS function. the whole networking vibe lives here. 🌐
• bind_count — tracks the number of configurations the RNDIS function is bound to, and it prevents double-registration of the net device. no duplicate era allowed. 🚫
• borrowed_net — true if the net_device is shared and pre-registered during the legacy composite driver's bind phase (e.g., multi.c). if false, the RNDIS function will register the net_device during its own bind phase. borrow responsibly, bestie. 🫶
• rndis_interf_group — the ConfigFS group for the RNDIS interface. group-chat but make it ConfigFS. 💬
• rndis_os_desc — the USB OS descriptor for RNDIS. very descriptor, very USB. ✨
• rndis_ext_compat_id — the Extended compatibility ID. fancy name, fancy field. 💅
• class — the USB class. ⭐
• subclass — the USB subclass. yes, it's a whole sub-vibe. 🦋
• protocol — the USB protocol. rules are rules. 📜
• lock — protects the data from concurrent access by configfs read/write and create symlink/remove symlink operations. it's the bouncer at the club, fr fr. 🔒
• refcnt — reference counter for the function instance. count the refs, bestie. 🧮

🌈 SEE ALSO 🌈

• Kernel file ./drivers/usb/gadget/function/u_rndis.h — go read it, iykyk. 📖

mwah 💋 — that's the whole page, and it came from the Kernel API Manual, with source/version ./drivers/usb/gadget/function, dated October 2026, and it's literally titled struct f_rndis_opts(9). periodt. 👑