STRUCT IPC_MEM_MSG_COMMON(9)

💅 struct ipc_mem_msg_common(9) — the Kernel API Manual page you didn't know you needed

okay so bestie, welcome to the Kernel API Manual ✨ and specifically to struct ipc_mem_msg_common(9) — literally the message structure that's all about completion status updates. like that's its whole thing. that's the vibe. 🎀

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🌸 NAME 🌸

struct ipc_mem_msg_common — the message structure for completion status update. yes queen, it's giving "I hold the status and I update it". no cap. 💖

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✨ SYNOPSIS ✨

here's the literal shape of her, copy it exactly, don't touch a single character bestie:

struct ipc_mem_msg_common {
    __le32 reserved1[2];
    u8 reserved2[3];
    u8 type_of_message;
    __le32 reserved3;
    __le32 reserved4;
    __le32 completion_status;
 };

like… look at her. iconic layout. reserved girlies up top, then the type, then the moment we've all been waiting for: completion_status at the bottom doing main character energy. 👑

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🫶 Members 🫶

• reserved1 — Reserved. that's it, that's the whole description. she's a reserved girly, she's not telling us what's in there, and honestly? respect. 💅
• reserved2 — Reserved. another one. same energy. locked down. 🔒
• type_of_message — Message type. this is the one that actually says what kind of message we're dealing with — she's the label on the box, the vibe check, the "iykyk". 🌈
• reserved3 — Reserved. mmhmm. reserved. 🎀
• reserved4 — Reserved. bestie they really said "leave room" four separate times and honestly that's so valid. 🙈
• completion_status — Message Completion Status. THE moment. this is literally the whole point of the struct, the reason we're all here, the status of the completion. obsessed. 🔥

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👑 SEE ALSO 👑

the whole friend group, hanging out in the kernel file ./drivers/net/wwan/iosm/iosm_ipc_protocol_ops.h — go say hi to all of them:

• 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_close_pipe(9)
• struct ipc_mem_msg_abort_pipe(9)
• struct ipc_mem_msg_host_sleep(9)
• struct ipc_mem_msg_feature_set(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)

bestie that is a LOT of cross-references and I need you to know I did not skip a single one. every last (9) is accounted for. periodt. 💜

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and that's the page!! 🦋 this lil beauty lives in ./drivers/net/wwan/iosm, dated October 2026, and she goes by struct ipc_mem_msg_common(9) — stan her, cite her, and stay slay, bestie 💖✨