STRUCT BRCMF_BUS_OPS(9)

💅 struct brcmf_bus_ops(9) — bus callback operations ✨

okay so bestie, welcome to the Kernel API Manual, section 9 — this is the page for struct brcmf_bus_ops, and it's genuinely iconic, like the little contract every bus driver signs to talk to the brcmfmac common driver 🫶

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🌸 SYNOPSIS 🌸

struct brcmf_bus_ops {
    int (*preinit)(struct device *dev);
    void (*stop)(struct device *dev);
    int (*txdata)(struct device *dev, struct sk_buff *skb);
    int (*txctl)(struct device *dev, unsigned char *msg, uint len);
    int (*rxctl)(struct device *dev, unsigned char *msg, uint len);
    struct pktq * (*gettxq)(struct device *dev);
    void (*wowl_config)(struct device *dev, bool enabled);
    size_t (*get_ramsize)(struct device *dev);
    int (*get_memdump)(struct device *dev, void *data, size_t len);
    int (*get_blob)(struct device *dev, const struct firmware **fw, enum
brcmf_blob_type type);
    void (*debugfs_create)(struct device *dev);
    int (*reset)(struct device *dev);
    void (*remove)(struct device *dev);
 };

no cap, that's the whole shape of it — every function pointer, every type, copied character for character 😌

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🎀 Members 🎀

• preinit — runs the bus/device specific dongle init commands. it's optional, so you're not obligated, bestie 💅
• stop — clears out pending frames and disables data flow. like closing the group chat for the night 🦋
• txdata — sends a data frame to the dongle. and listen: once the data has actually been transferred, the common driver must be notified using brcmf_txcomplete. also the common driver calls this function with interrupts disabled, so no funny business ⚠️
• txctl — transmits a control request message to dongle 📨
• rxctl — receives a control response message from dongle 📬
• gettxq — grabs a reference to the bus transmit queue. optional, lowkey the chill one 🌸
• wowl_config — specifies whether the dongle is configured for wowl when going to suspend 😴
• get_ramsize — obtains the size of the device memory 🧠
• get_memdump — obtains a device memory dump into the buffer you provide 🗂️
• get_blob — obtains a firmware blob ✨
• debugfs_create — (listed as a member, no description given on this page 🙈)
• reset — (listed as a member, no description given on this page 🙈)
• remove — initiates unbind of the device 👋

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💖 Description 💖

so this structure is basically the abstract interface towards the bus specific driver — the vibe check layer between the two 🧚

for control messages to the common driver, it will assure there is only one active transaction at a time. one. at. a. time. periodt 👑

and unless it says otherwise up above (looking at you, preinit and gettxq), these callbacks are mandatory. fr fr, not optional 💀

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/net/wireless/broadcom/brcm80211/brcmfmac/bus.h
• struct brcmf_bus_msgbuf(9), struct brcmf_bus_stats(9), struct brcmf_bus(9)

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and that's the page, bestie 🎀 this lil gem came out of the kernel source at ./drivers/net/wireless/broadco..., dated October 2026, and it's filed under struct brcmf_bus_ops(9) — go forth and slay your bus callbacks 💜✨