STRUCT FC_STATS(9)

💅 NAME 💅

ok so struct fc_stats — it's literally the fc stats structure, no cap, that's the whole vibe 🦋

this is from the kernel API manual, section 9 (struct fc_stats(9)), and bestie you're gonna want to bookmark this one ✨

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🌸 SYNOPSIS 🌸

here's the whole struct, copy-paste energy, don't let me catch you retyping it by hand 🙈

struct fc_stats {
    u64 SecondsSinceLastReset;
    u64 TxFrames;
    u64 TxWords;
    u64 RxFrames;
    u64 RxWords;
    u64 ErrorFrames;
    u64 DumpedFrames;
    u64 FcpPktAllocFails;
    u64 FcpPktAborts;
    u64 FcpFrameAllocFails;
    u64 LinkFailureCount;
    u64 LossOfSignalCount;
    u64 InvalidTxWordCount;
    u64 InvalidCRCCount;
    u64 InputRequests;
    u64 OutputRequests;
    u64 ControlRequests;
    u64 InputBytes;
    u64 OutputBytes;
    u64 VLinkFailureCount;
    u64 MissDiscAdvCount;
};

it's giving "collection of u64 counters" and honestly? iconic 👑

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🎀 Members 🎀

okay so now we go field by field, and yes i am gonna give each one its moment ✨

• SecondsSinceLastReset — the number of seconds since the last reset ⏱️ (yes, that's it, she's the clock)
• TxFrames — number of transmitted frames 📤
• TxWords — number of transmitted words 📤
• RxFrames — number of received frames 📥
• RxWords — number of received words 📥
• ErrorFrames — number of received error frames 😭 (received, and also error, rough combo ngl)
• DumpedFrames — number of dumped frames 🗑️
• FcpPktAllocFails — number of fcp packet allocation failures 💀 allocation said no
• FcpPktAborts — number of fcp packet aborts 🛑
• FcpFrameAllocFails — number of fcp frame allocation failures 💀 (yes, the frame version of the above, they are different, don't @ me)
• LinkFailureCount — number of link failures ⛓️‍💥
• LossOfSignalCount — number for signal losses 📉 (that's the original wording, "number for signal losses", i'm just the messenger 🫶)
• InvalidTxWordCount — number of invalid transmitted words 🚫
• InvalidCRCCount — number of invalid CRCs 🚫
• InputRequests — number of input requests 📨
• OutputRequests — number of output requests 📨
• ControlRequests — number of control requests 🎛️
• InputBytes — number of received bytes 📥 (bytes not words, she's fancy)
• OutputBytes — number of transmitted bytes 📤
• VLinkFailureCount — number of virtual link failures 🌀 (virtual link, real pain)
• MissDiscAdvCount — number of missing FIP discovery advertisement 🔍 main character of the "where did the advertisement go" saga

lowkey a whole lot of counters, but ngl every single one of them is pulling its weight 💪

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🌈 SEE ALSO 🌈

okay bestie, the kernel file is ./include/scsi/libfc.h and here's the full squad it rolls with — every single one, no skipping 👯‍♀️

• enum fc_lport_state(9)
• enum fc_rport_state(9)
• struct fc_disc_port(9)
• enum fc_rport_event(9)
• struct fc_rport_operations(9)
• struct fc_rport_libfc_priv(9)
• struct fc_rport_priv(9)
• struct fc_seq_els_data(9)
• struct fc_fcp_pkt(9)
• struct fc_seq(9)
• struct fc_exch(9)
• struct fc_disc(9)
• struct fc_lport(9)
• struct fc4_prov(9)
• fc_lport_test_ready(9)
• fc_set_wwnn(9)
• fc_set_wwpn(9)
• fc_lport_state_enter(9)
• fc_lport_init_stats(9)
• fc_lport_free_stats(9)
• lport_priv(9)
• libfc_host_alloc(9)

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💖 and that's the page! this lil masterpiece lives in ./include/scsi, dated October 2026, and it goes out under the name struct fc_stats(9) — slay, periodt, go read libfc.h 🧚‍♀️✨