STRUCT ZD_USB_TX(9)

💅 struct zd_usb_tx(9) — the kernel API manual, bestie edition

okay so picture this: it's a page straight out of the Kernel API Manual, section 9, and it's about one (1) struct. yes we're doing a whole manual page for a struct. iconic behaviour honestly 🎀

✨ NAME ✨

struct zd_usb_tx — the structure used for transmitting frames 🦋

✨ SYNOPSIS ✨

struct zd_usb_tx {
    atomic_t enabled;
    spinlock_t lock;
    struct delayed_work watchdog_work;
    struct sk_buff_head submitted_skbs;
    struct usb_anchor submitted;
    int submitted_urbs;
    u8 stopped:1, watchdog_enabled:1;
 };

like, look at her. main character struct energy. 👑

✨ Members ✨

• enabled — an atomic enabled flag 💫 — basically it tells you whether tx is enabled or not, no cap
• lock — the lock for transmission 🔒 — yes she's got a lock, the vibes must be protected
• submitted — the anchor for URBs sent to device ⚓ — that's where the sent URBs hang out
• submitted_urbs — an atomic integer that counts the URBs having sent to the device, which haven't been completed 😭 — so like, in-flight, not-yet-finished URBs, and it's counting them atomically fr fr
• stopped — indicates whether higher level tx queues are stopped 🛑 — highkey important to know

ngl the struct up there in the synopsis also has watchdog_work, submitted_skbs and watchdog_enabled:1 living in it, and the page has zero commentary on those, so I'm not gonna invent any. we respect the source 🙈

🌈 SEE ALSO 🌈

Kernel file ./drivers/net/wireless/zydas/zd1211rw/zd_usb.h — go read the source bestie, iykyk 💜

and that's the whole vibe check ✨ this little gem came from ./drivers/net/wireless/zydas/z..., dated October 2026 — periodt, no notes 💅🌸