STRUCT WWAN_PORT(9)

💅 struct wwan_port — the whole vibe

okay so bestie, this is a page from the Kernel API Manual (that's the manual name, keep it in your notes 📓), and it's literally all about struct wwan_port — the structure that defines a WWAN port. yes. the structure. the blueprint. the main character. 🫶

---

✨ NAME ✨

struct wwan_port — the structure that defines a WWAN port 💖

---

🎀 SYNOPSIS 🎀

here's the whole thing, character for character, no cap:

struct wwan_port {
    enum wwan_port_type type;
    unsigned int start_count;
    unsigned long flags;
    const struct wwan_port_ops *ops;
    struct mutex ops_lock;
    struct device dev;
    struct sk_buff_head rxq;
    wait_queue_head_t waitqueue;
    struct mutex data_lock;
    size_t headroom_len;
    size_t frag_len;
    union {
      struct {
        struct ktermios termios;
        int mdmbits;
      } at_data;
      struct gnss_device *gnss;
    };
 };

look at her. iconic. 🌸

---

👑 Members 👑

every single field, explained with love (and accuracy, obviously):

• type — port type. which flavour of port this is, iykyk 🍓
• start_count — the port start counter. she's counting, bestie.
• flags — stores port state and capabilities 💅
• ops — pointer to WWAN port operations
• ops_lock — protects port ops 🔒
• dev — underlying device
• rxq — buffer inbound queue (the queue where inbound stuff sits, vibing)
• waitqueue — the waitqueue for port fops (read/write/poll), literally what fops wait on 😭
• data_lock — port specific data access serialization
• headroom_len — SKB reserved headroom size
• frag_len — length to fragment packet
• {unnamed_union} — anonymous. that's it. that's the whole note. no name, no problem 🙈
• at_data — AT port specific data
• gnss — pointer to GNSS device associated with this port 🛰️

ngl, the {unnamed_union} line is sending me — the manpage literally just says "anonymous" and moves on. respect. ⭐

---

🌈 SEE ALSO 🌈

go read these next, bestie, they're in the same universe:

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

---

and that's the page! 🧚 source is ./drivers/net/wwan, dated October 2026, and it lives in the Kernel API Manual. mwah. periodt. 💜