zfcp_fc_scsi_to_fcp(9)

💅 zfcp_fc_scsi_to_fcp(9) 💅

okay so this is a page from the Kernel API Manual, and honestly? it's a little baby page but it's doing important work. bestie, if you're poking at zfcp on s390, this is the glue function you need to know about. let's get into it ✨

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✨ NAME ✨

zfcp_fc_scsi_to_fcp — setup FCP command with data from scsi_cmnd

like, it literally takes your SCSI command and turns it into an FCP command. it's giving translator. it's giving "i speak both languages". 🦋

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🌸 SYNOPSIS 🌸

void zfcp_fc_scsi_to_fcp (struct fcp_cmnd *fcp , struct scsi_cmnd *scsi
);

returns nothing (void), takes two pointers, does the thing. no cap, that's the whole signature 🎀

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💖 ARGUMENTS 💖

• fcp — the fcp_cmnd you want to set up. this is the destination, the main character of the operation, the one getting filled in 🫶
• scsi — the scsi_cmnd where you're pulling the info from. specifically the LUN, the task attributes/flags, and the CDB. so yeah, it's the source of truth, the origin story, the "where to get" of it all 💅

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👑 SEE ALSO 👑

ok so if you're going down the rabbit hole (and you should, it's a whole vibe), the Kernel file ./drivers/s390/scsi/zfcp_fc.h is the home base. and then there's this whole friend group of related structs and enums, all of them living their best lives with their (9) manpage suffixes:

• struct zfcp_fc_event(9)
• struct zfcp_fc_events(9)
• struct zfcp_fc_gid_pn_req(9)
• struct zfcp_fc_gid_pn_rsp(9)
• struct zfcp_fc_gspn_req(9)
• struct zfcp_fc_gspn_rsp(9)
• struct zfcp_fc_rspn_req(9)
• struct zfcp_fc_req(9)
• enum zfcp_fc_wka_status(9)
• struct zfcp_fc_wka_port(9)
• struct zfcp_fc_wka_ports(9)
• zfcp_fc_fcp_tm(9)

lowkey a whole squad. go read them, they're iconic 🔥

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ngl this page is short but every word is doing its job — don't skip the arguments section, the LUN/flags/CDB trio is the whole point 💀

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and that's the tea! 🍓 this lil writeup lives in ./drivers/s390/scsi, dated October 2026, and it's filed under zfcp_fc_scsi_to_fcp(9) — go forth and set up those FCP commands, bestie, you've got this 💜🌈⭐