fc_sdev_init(9)

💅 fc_sdev_init(9) — the kernel API manual, but make it make sense

okay so bestie, quick vibe check: this is fc_sdev_init, a page from the Kernel API Manual, and it's genuinely one of those tiny functions that does one thing and does it slay. lowkey a whole icon for staying in its lane. let's get into it 🫶

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✨ NAME ✨

fc_sdev_init — configure the queue depth of a Scsi_Host

like... that's it. that's the job. she sets the queue depth. periodt. 👑

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✨ SYNOPSIS ✨

int fc_sdev_init (struct scsi_device *sdev );

one function, one argument, returns an int. clean, minimal, no notes. the way she doesn't overcomplicate things? obsessed. 💅

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✨ ARGUMENTS ✨

• sdev — the SCSI device that identifies the SCSI host. think of it as the little ID card 🪪 that tells you which host we're talking about. you hand her the sdev, she knows exactly who she's dealing with. no cap.

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✨ DESCRIPTION ✨

so what does she actually do? she configures queue depth based on the host's cmd_per_len. 🎀

and here's the safety net, bestie: if that's not set? no stress, no panic, no drama — we just use the libfc default. she's got a fallback and she's not afraid to use it. 🌸

it's giving "responsible main character energy." 🔥

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✨ SEE ALSO ✨

okay this is the part where the friend group shows up and it's a whole crowd. literally everyone's here. take a breath, we're going through the list 👯‍♀️

• Kernel file ./drivers/scsi/libfc/fc_fcp.c
• struct fc_fcp_internal(9)
• fc_fcp_pkt_alloc(9)
• fc_fcp_pkt_release(9)
• fc_fcp_pkt_hold(9)
• fc_fcp_pkt_destroy(9)
• fc_fcp_lock_pkt(9)
• fc_fcp_unlock_pkt(9)
• fc_fcp_timer_set(9)
• fc_fcp_send_abort(9)
• fc_fcp_retry_cmd(9)
• fc_fcp_ddp_setup(9)
• fc_fcp_ddp_done(9)
• fc_fcp_can_queue_ramp_up(9)
• fc_fcp_can_queue_ramp_down(9)
• get_fsp_rec_tov(9)
• fc_fcp_recv_data(9)
• fc_fcp_send_data(9)
• fc_fcp_abts_resp(9)
• fc_fcp_recv(9)
• fc_fcp_resp(9)
• fc_fcp_complete_locked(9)
• fc_fcp_cleanup_cmd(9)
• fc_fcp_cleanup_each_cmd(9)
• fc_fcp_abort_io(9)
• fc_fcp_pkt_send(9)
• fc_fcp_cmd_send(9)
• fc_fcp_error(9)
• fc_fcp_pkt_abort(9)
• fc_lun_reset_send(9)
• fc_lun_reset(9)
• fc_tm_done(9)
• fc_fcp_cleanup(9)
• fc_fcp_timeout(9)
• fc_fcp_rec(9)
• fc_fcp_rec_resp(9)
• fc_fcp_rec_error(9)
• fc_fcp_recovery(9)
• fc_fcp_srr(9)
• fc_fcp_srr_resp(9)
• fc_fcp_srr_error(9)
• fc_fcp_lport_queue_ready(9)
• fc_queuecommand(9)
• fc_io_compl(9)
• fc_eh_abort(9)
• fc_eh_device_reset(9)
• fc_eh_host_reset(9)
• fc_fcp_destroy(9)
• fc_fcp_init(9)

yeah. forty-nine of them. she has friends, okay?? 😭✨

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🦋 sign-off 🦋

this page lives in ./drivers/scsi/libfc and it's dated October 2026 — so yeah, she's from the future and she's still explaining queue depth to us. iconic behavior honestly. 💜

go forth, set that queue depth, and remember: if cmd_per_len isn't there, the libfc default has your back. love that for you. mwah. 🍓✨