STRUCT HSC_CHANNEL(9)

💖 struct hsc_channel(9) 💖

okay bestie, welcome to the Kernel API Manual — today’s main character is struct hsc_channel(9), and she is literally the hsi_char internal channel data struct. no cap, this is the little data homebase for a channel. 🎀

✨ NAME ✨

struct hsc_channel — hsi_char internal channel data. that’s the vibe: internal channel data for hsi_char, periodt. 💅

🦋 SYNOPSIS 🦋

struct hsc_channel {
    unsigned int            ch;
    unsigned long           flags;
    struct list_head        free_msgs_list;
    struct list_head        rx_msgs_queue;
    struct list_head        tx_msgs_queue;
    spinlock_t lock;
    struct hsi_client       *cl;
    struct hsc_client_data *cl_data;
    wait_queue_head_t rx_wait;
    wait_queue_head_t tx_wait;
};

🎀 Members 🎀

• ch — the channel number. iconic little ID. ✨
• flags — keeps the state of the channel (open/close, reading, writing). she remembers everything, lowkey. 💅
• free_msgs_list — a list of free HSI messages/requests. the available pile, bestie. 🍓
• rx_msgs_queue — a list of pending RX requests. incoming stuff waiting its turn. 📥
• tx_msgs_queue — a list of pending TX requests. outgoing stuff queued up. 📤
• lock — serialize access to the lists. one at a time, no chaos, fr fr. 🔒
• cl — a reference to the associated hsi_client. her client link. 🫶
• cl_data — a reference to the client data that this channel belongs to. the bigger client-data situation. 🌸
• rx_wait — the RX requests wait queue. where RX requests wait, obviously. ⏳
• tx_wait — the TX requests wait queue. same energy, but for TX. ⏳

🔥 SEE ALSO 🔥

• Kernel file ./drivers/hsi/clients/hsi_char.c
• struct hsc_client_data(9)

mwah 💋 source/version corner: ./drivers/hsi/clients, dated October 2026, and the page is literally struct hsc_channel(9). byeee, bestie 🫶✨