UNION NPS_PKT_IN_INSTR_RSIZE(9)

okay so this page is from the Kernel API Manual, section 9, and it's about a C union — not a labor union, bestie 💅 the header lowkey truncates the name as union nps_pk..._instr_rsize(9) but we're gonna say the whole thing out loud, periodt.

✨ NAME ✨

union nps_pkt_in_instr_rsize — Input instruction ring size registers. that's the name, she's self-explanatory, we stan a concise legend 🫶

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🔥 SYNOPSIS 🔥

union nps_pkt_in_instr_rsize {
    u64 value;
    struct {
  #if (defined(__BIG_ENDIAN_BITFIELD));
      u64 raz : 32;
      u64 rsize : 32;
  #else;
      u64 rsize : 32;
      u64 raz : 32;
  #endif;
    } s;
 };

so you've got a u64 value up top, and then a nested struct called s with two 32-bit bitfields, raz and rsize. the order literally flips depending on __BIG_ENDIAN_BITFIELD — big-endian girlies get raz first, everyone else gets rsize first. it's giving conditional compilation realness 😌

Heads up: this page skips straight from SYNOPSIS to the Members section. no DESCRIPTION, no OPTIONS, no RETURN VALUE — that's not me leaving stuff out, that's genuinely the whole page. no cap 💀

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👑 Members 👑

okay so the Members section is present but there are no members listed under it. she's an empty section living her best minimalist life 🎀 nothing to memorise here, bestie. (and yes, I'm telling you that on purpose, because a missing detail would be a crime and I would never 🙈)

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🌈 SEE ALSO 🌈

first up, the kernel file where this whole situation lives:

• ./drivers/crypto/cavium/nitrox/nitrox_csr.h

and then a whole friend group of unions, all section (9), all iconic:

• union ucd_core_eid_ucode_block_num(9)
• union aqm_grp_execmsk_lo(9)
• union aqm_grp_execmsk_hi(9)
• union aqmq_drbl(9)
• union aqmq_qsz(9)
• union aqmq_cmp_thr(9)
• union aqmq_cmp_cnt(9)
• union aqmq_en(9)
• union aqmq_activity_stat(9)
• union emu_fuse_map(9)
• union emu_se_enable(9)
• union emu_ae_enable(9)
• union emu_wd_int_ena_w1s(9)
• union emu_ge_int_ena_w1s(9)
• union nps_pkt_slc_ctl(9)
• union nps_pkt_slc_cnts(9)
• union nps_pkt_slc_int_levels(9)
• union nps_pkt_in_done_cnts(9)
• union nps_pkt_in_instr_ctl(9)
• union nps_pkt_in_instr_baoff_dbell(9)
• union nps_core_int_ena_w1s(9)
• union nps_core_gbl_vfcfg(9)
• union nps_core_int_active(9)
• union efl_core_int(9)
• union efl_core_int_ena_w1s(9)
• union efl_rnm_ctl_status(9)
• union bmi_ctl(9)
• union bmi_int_ena_w1s(9)
• union bmo_ctl2(9)
• union pom_int_ena_w1s(9)
• union lbc_inval_ctl(9)
• union lbc_int_ena_w1s(9)
• union lbc_int(9)
• union lbc_inval_status(9)
• union rst_boot(9)
• union fus_dat1(9)

like, that's thirty-six of them. she has so many friends. main character energy fr fr 🔥

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anyway that's the whole page bestie, go forth and read your CSRs 💖

cute lil sign-off: this one came from <green>./drivers/crypto/cavium/nitrox</green>, is dated October 2026, and answers to the name union nps_pk..._instr_rsize(9) 🎀✨ slay, bye!