STRUCT SCSIIO_TRACKER(9)

💖 struct scsiio_tracker(9) 💖

okay bestie, welcome to the Kernel API Manual — this one's a struct page from the mpt3sas universe and it's honestly such a little legend. buckle up, we're getting into the tracker for scsi mf requests 🦋

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✨ NAME ✨

struct scsiio_tracker — the scsi mf request tracker, aka the main character that keeps tabs on your requests 🔥

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🌸 SYNOPSIS 🌸

struct scsiio_tracker {
    u16 smid;
    struct scsi_cmnd *scmd;
    u8 cb_idx;
    u8 direct_io;
    struct pcie_sg_list pcie_sg_list;
    struct list_head chain_list;
    u16 msix_io;
 };

no cap, that's the whole vibe — seven fields, zero drama ✨

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🎀 Members 🎀

lets go through them one by one, iykyk 💅

• smid — the system message id. that's it, that's the field 🫶
• cb_idx — the callback index. yes bestie, it indexes callbacks 💜
• direct_io — here to tell you whether the I/O is direct or not (WARPDRIVE) 🚀 lowkey iconic naming ngl
• chain_list — the list of associated firmware chain tracker 🧚 literally a little chain of friends
• msix_io — the I/O's msix ⭐

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👑 SEE ALSO 👑

if you're gonna go read more (and you should, bestie), everything lives in the kernel file ./drivers/scsi/mpt3sas/mpt3sas_base.h struct — and here's the full guest list for the afterparty 🎉:

• struct MPT3SAS_TARGET(9)
• struct MPT3SAS_DEVICE(9)
• struct _internal_cmd(9)
• struct _sas_device(9)
• pcie_device_get(9)
• pcie_device_free(9)
• pcie_device_put(9)
• struct _boot_device(9)
• struct _sas_port(9)
• struct _sas_phy(9)
• struct _sas_node(9)
• struct _enclosure_node(9)
• enum reset_type(9)
• struct pcie_sg_list(9)
• struct chain_tracker(9)
• struct request_tracker(9)
• struct _tr_list(9)
• struct _sc_list(9)
• struct _event_ack_list(9)
• struct adapter_reply_queue(9)
• struct io_uring_poll_queue(9)
• struct virtual_phy(9)
• struct hba_port(9)
• struct htb_rel_query(9)
• struct MPT3SAS_ADAPTER(9)

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💀 fr fr, don't skip the SEE ALSO. that's where the whole lore lives.

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omg and before you go — this lil page comes from the kernel file ./drivers/scsi/mpt3sas, dated October 2026, and it's filed under struct scsiio_tracker(9). slay, go forth and track those requests bestie 💅💖🌈