STRUCT IPC_MEM_MSG_CLOSE_PIPE(9)

💅 struct ipc_mem_msg_close_pipe(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ this one's a lil struct page and honestly it's giving "backstage pass to the pipe-closing machinery" 🎀

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✨ NAME ✨

struct ipc_mem_msg_close_pipe — the message structure for close pipe 🫶

like, literally the little packet-shaped vessel that carries a "close this pipe pls" request. no cap, that's the whole vibe 💖

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🌸 SYNOPSIS 🌸

struct ipc_mem_msg_close_pipe {
    __le32 reserved1[2];
    __le16 reserved2;
    u8 pipe_nr;
    u8 type_of_message;
    __le32 reserved3;
    __le32 reserved4;
    __le32 completion_status;
 };

look at her. so structured. so aligned. main character energy from the very first __le32 👑

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🦋 Members 🦋

• reserved1 — reserved 💤 (yes bestie, it's reserved. we do not touch. we do not ask questions.)
• reserved2 — reserved 💤 (another one. the reserved agenda is thriving.)
• pipe_nr — the pipe number 🚰 like which pipe we're talking about, iykyk
• type_of_message — the message type 🏷️ so the receiver knows what kind of moment this is
• reserved3 — reserved 💤
• reserved4 — reserved 💤 (four reserved fields total, the struct said "leave room for the future" and honestly? iconic foresight ✨)
• completion_status — the message completion status ✅ the "did it slay or did it flop" report, lowkey the most important field here 💅

ngl the reserved fields are literally just padding vibes — they're reserved, so hands off 🙈

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🔥 SEE ALSO 🔥

all the siblings and neighbors, fr fr — go read these next, bestie 🫶

Kernel file ./drivers/net/wwan/iosm/iosm_ipc_protocol_ops.h

• enum ipc_mem_td_cs(9)
• enum ipc_mem_msg_cs(9)
• struct ipc_msg_prep_args_pipe(9)
• struct ipc_msg_prep_args_sleep(9)
• struct ipc_msg_prep_feature_set(9)
• struct ipc_msg_prep_map(9)
• struct ipc_msg_prep_unmap(9)
• union ipc_msg_prep_args(9)
• enum ipc_msg_prep_type(9)
• struct ipc_rsp(9)
• enum ipc_mem_msg(9)
• struct ipc_mem_msg_open_pipe(9)
• struct ipc_mem_msg_abort_pipe(9)
• struct ipc_mem_msg_host_sleep(9)
• struct ipc_mem_msg_feature_set(9)
• struct ipc_mem_msg_common(9)
• union ipc_mem_msg_entry(9)
• ipc_protocol_msg_prep(9)
• ipc_protocol_msg_hp_update(9)
• ipc_protocol_msg_process(9)
• ipc_protocol_ul_td_send(9)
• ipc_protocol_ul_td_process(9)
• ipc_protocol_dl_td_prepare(9)
• ipc_protocol_dl_td_process(9)
• ipc_protocol_get_head_tail_index(9)
• ipc_protocol_get_ipc_status(9)
• ipc_protocol_pipe_cleanup(9)
• ipc_protocol_get_ap_exec_stage(9)
• ipc_protocol_pm_dev_get_sleep_notification(9)

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and that's the whole page, bestie 💜 this lil beauty lives in ./drivers/net/wwan/iosm and the version/date stamp on it is October 2026 — so go forth, close those pipes, and remember: the reserved fields are reserved for a reason 😭✨ slay 🫶