STRUCT ISST_IF_MBOX_CMDS(9)

✨ struct isst_if_mbox_cmds(9) ✨

okay bestie, welcome to the Kernel API Manual 💖 this one's a struct page, and honestly? it's giving "small but powerful." let's get into it 🫶

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🌸 NAME 🌸

struct isst_if_mbox_cmds — the structure for mailbox commands 📬 like, literally the whole personality is "a bundle of mailbox commands."

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🦋 SYNOPSIS 🦋

struct isst_if_mbox_cmds {
    __u32 cmd_count;
    struct isst_if_mbox_cmd mbox_cmd[1];
 };

there she is 💅 two members, zero drama, maximum vibe check passed.

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🎀 Members 🎀

• cmd_count — how many mailbox commands are chillin' inside mbox_cmd[]. it's the count. it counts. iconic behavior honestly 🔥
• mbox_cmd — holds one or more mbox commands. plural energy in a singular-looking array, iykyk 🌈

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👑 Description 👑

so here's the tea ☕ — this structure is used with the ioctl ISST_IF_MBOX_COMMAND to send one or more mailbox commands to PUNIT. yes bestie, you read that right, multiple commands at once, efficiency queen 👑

and the important bit — do NOT sleep on this — the ioctl return value is doing double duty:

• it indicates the number of commands sent ✨, OR
• it gives you the error number if no commands have been sent 😭

so like... read the return value carefully, okay? it's not just "did it work," it's telling you the whole story 📖

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🧚 SEE ALSO 🧚

the whole friend group, fr fr 🌸 the kernel file ./include/uapi/linux/isst_if.h plus these iconic siblings:

• struct isst_if_platform_info(9)
• struct isst_if_cpu_map(9)
• struct isst_if_cpu_maps(9)
• struct isst_if_io_reg(9)
• struct isst_if_io_regs(9)
• struct isst_if_mbox_cmd(9)
• struct isst_if_msr_cmd(9)
• struct isst_if_msr_cmds(9)
• struct isst_core_power(9)
• struct isst_clos_param(9)
• struct isst_if_clos_assoc(9)
• struct isst_if_clos_assoc_cmds(9)
• struct isst_tpmi_instance_count(9)
• struct isst_perf_level_info(9)
• struct isst_perf_level_control(9)
• struct isst_perf_feature_control(9)
• struct isst_perf_level_data_info(9)
• struct isst_perf_level_fabric_info(9)
• struct isst_perf_level_cpu_mask(9)
• struct isst_base_freq_info(9)
• struct isst_turbo_freq_info(9)

go read all of them, they ate 💅 no cap.

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🫶 quick reminder bestie: read that return value like it's a text from your crush — every number means something 💖

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that's the whole page! 💜 this lil icon came from ./include/uapi/linux, dated October 2026, and it's filed under struct isst_if_mbox_cmds(9). mwah, go forth and mail some boxes 📬✨🎀