STRUCT WWAN_DEVICE(9)

💅 struct wwan_device(9) — the Kernel API Manual, bestie edition ✨

Okay so like, hi, welcome to the struct wwan_device(9) page from the Kernel API Manual 🎀 this is the ~iconic~ little struct that defines a WWAN device, and honestly she's giving main character energy. Let's get into it 🦋

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✨ NAME ✨

struct wwan_device — the structure that defines a WWAN device 💖

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🌸 SYNOPSIS 🌸

struct wwan_device {
    unsigned int id;
    int refcount;
    struct device dev;
    const struct wwan_ops *ops;
    void *ops_ctxt;
  #ifdef CONFIG_WWAN_DEBUGFS;
    struct dentry *debugfs_dir;
  #endif;
 };

Like, that's the whole blueprint, bestie. Every field, exactly as it lives. No notes. Periodt. 💅

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👑 Members 👑

• id — the WWAN device's unique ID, like its very own username that nobody else can have 🔥
• refcount — the reference count of this WWAN device. The way that this works is: when this refcount reaches zero, the device gets deleted 😭 that's the whole lifecycle, no cap.

NB: access is protected by the global wwan_register_lock mutex. Like, do not touch it outside that lock, fr fr. Respect the mutex. 🙈

• dev — the underlying device underneath it all, the ~foundation~ of the vibe 🫶
• ops — the wwan device ops. Yep. That's the ops. 💜
• ops_ctxt — the context to pass to those ops. Little care package for the ops, iconic 🎀
• debugfs_dir — the WWAN device debugfs dir ✨ (this one only shows up when CONFIG_WWAN_DEBUGFS is defined, iykyk)

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/net/wwan/wwan_core.c
• struct wwan_port(9)
• wwan_register_ops(9)
• wwan_unregister_ops(9)

Like, go read those next, they're literally the rest of the lore 🌈

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aaaand that's the page, bestie 💖 this cutie lives over at ./drivers/net/wwan, stamped October 2026, and the page itself is struct wwan_device(9) — so next time someone asks, you already know. Slay 🌸👑