STRUCT GLINK_CHANNEL(9)

💖 struct glink_channel(9) 💖

okay so this is from the Kernel API Manual, section 9, and it's literally the whole personality of a glink channel in one struct bestie 🎀

✨ NAME ✨

struct glink_channel — the internal representation of a channel 🦋

🌸 SYNOPSIS 🌸

struct glink_channel {
    struct rpmsg_endpoint ept;
    struct rpmsg_device *rpdev;
    struct qcom_glink *glink;
    struct kref refcount;
    spinlock_t recv_lock;
    char *name;
    unsigned int lcid;
    unsigned int rcid;
    spinlock_t intent_lock;
    struct idr liids;
    struct idr riids;
    struct work_struct intent_work;
    struct list_head done_intents;
    struct glink_core_rx_intent *buf;
    int buf_offset;
    int buf_size;
    struct completion open_ack;
    struct completion open_req;
    struct mutex intent_req_lock;
    int intent_req_result;
    bool intent_received;
    wait_queue_head_t intent_req_wq;
};

👑 Members 👑

like, every single field, explained, no gatekeeping 💅

• ept — the rpmsg endpoint this channel is associated with 🫶
• rpdev — the rpdev reference, and lowkey she's only used for primary endpoints
• glink — the qcom_glink context handle, the whole vibe container
• refcount — refcount for the channel object, keeping her alive, main character energy ✨
• recv_lock — guard for ept.cb, protective queen
• name — unique channel name/identifier, her literal government name
• lcid — channel id, in local space
• rcid — channel id, in remote space
• intent_lock — lock protecting liids and riids 🫡
• liids — idr of all local intents
• riids — idr of all remote intents
• intent_work — the worker responsible for transmitting rx_done packets, she's got a job fr fr
• done_intents — list of intents that need to be announced rx_done
• buf — receive buffer, for gathering fragments 🧩
• buf_offset — write offset in buf
• buf_size — size of current buf
• open_ack — completed once remote has acked the open-request ✅
• open_req — completed once open-request has been received
• intent_req_lock — synchronises multiple intent requests, no fighting in the group chat pls
• intent_req_result — result of intent request
• intent_received — flag indicating that an intent has been received 🚩
• intent_req_wq — wait queue for intent_req signalling

🔥 SEE ALSO 🔥

• Kernel file ./drivers/rpmsg/qcom_glink_native.c
• struct glink_defer_cmd(9)
• struct glink_core_rx_intent(9)
• struct qcom_glink(9)
• qcom_glink_send_open_req(9)
• qcom_glink_receive_version(9)
• qcom_glink_receive_version_ack(9)
• qcom_glink_send_intent_req_ack(9)
• qcom_glink_advertise_intent(9)
• qcom_glink_handle_intent_req(9)
• qcom_glink_set_flow_control(9)

🌈 that's the whole page, ate and left no crumbs. this one lives in ./drivers/rpmsg, it's dated October 2026, and it's your girl struct glink_channel(9) signing off — mwah 💋💜