STRUCT ZFCP_DBF_PAY(9)

💖 struct zfcp_dbf_pay — bestie's guide to the payload trace record 💖

okay so picture this: you're deep in the Kernel API Manual (yes we're reading kernel docs for fun now, it's giving study date energy 🌸) and you stumble on this little icon, struct zfcp_dbf_pay. Her whole job? She's the trace record for unformatted payload information. That's it. That's the vibe. She holds the raw, unshaped goods — no formatting, no pretty printing, just payload data doing main character energy ✨

✨ SYNOPSIS ✨

bestie, here's the whole shape of her, no cap:

struct zfcp_dbf_pay {
    u8 counter;
    char area[ZFCP_DBF_TAG_LEN];
    u64 fsf_req_id;
  #define ZFCP_DBF_PAY_MAX_REC 0x100;
    char data[ZFCP_DBF_PAY_MAX_REC];
 };

look at her. four members and one iconic little #define tucked right in there like a secret note passed in class 🫶

🎀 Members 🎀

• counter — the ascending record number 💅 she counts up, one by one, no skipping, no backtracking. order matters, periodt.
• area — the area this record is originated from 🦋 it's a char[ZFCP_DBF_TAG_LEN], so it's a little tag telling you where this record came from. iykyk.
• fsf_req_id — the request id of the fsf request 🔥 a u64, and it's literally the fingerprint of the request this record belongs to.
• data — the unformatted data 😭 raw, untouched, exactly as it came. she's a char[ZFCP_DBF_PAY_MAX_REC] and yes, ZFCP_DBF_PAY_MAX_REC is 0x100, we love a defined boundary in this house.

quick vibe check: data is unformatted. don't go expecting it to be structured or parsed for you — it's giving "here's the bytes, you figure it out" 🙈

👑 SEE ALSO 👑

the whole fam, all of them, not skipping a single one (we don't do that here):

• the kernel file ./drivers/s390/scsi/zfcp_dbf.h struct (the home base 🏠)
• zfcp_dbf_rec_trigger(9)
• struct zfcp_dbf_rec_running(9)
• enum zfcp_dbf_rec_id(9)
• struct zfcp_dbf_rec(9)
• enum zfcp_dbf_san_id(9)
• struct zfcp_dbf_hba_res(9)
• struct zfcp_dbf_hba_uss(9)
• struct zfcp_dbf_hba_uas(9)
• struct zfcp_dbf_hba_fces(9)
• enum zfcp_dbf_hba_id(9)
• struct zfcp_dbf_hba(9)
• enum zfcp_dbf_scsi_id(9)
• struct zfcp_dbf_scsi(9)
• struct zfcp_dbf(9)
• zfcp_dbf_hba_fsf_resp_suppress(9)
• zfcp_dbf_hba_fsf_response(9)
• zfcp_dbf_scsi_result(9)
• zfcp_dbf_scsi_fail_send(9)
• zfcp_dbf_scsi_abort(9)
• zfcp_dbf_scsi_devreset(9)
• zfcp_dbf_scsi_nullcmnd(9)

that's twenty-two references, and every single one ate 💀🔥 go read them, bestie, they're literally right there.

and that's the page!! 🧚 she lives in ./drivers/s390/scsi, she's dated October 2026, and she's part of the Kernel API Manual. slay, struct, slay 💜🎀