STRUCT TCCB(9)

Hey bestie! 💖 Welcome to the struct tccb page from the Kernel API Manual. It's the (partial) Transport-Command-Control Block, aka TCCB, and it's giving short-and-iconic. Let's go. ✨

🌸 NAME 🌸

struct tccb — (partial) Transport-Command-Control Block (TCCB). No cap, that's the whole name. 🫶

🦋 SYNOPSIS 🦋

Here's the struct definition, literally exactly this:

       struct tccb {
           struct tccb_tcah tcah;
           u8 tca[];
        };

🎀 Members 🎀

Two members, both main-character energy:

• tcah — TCAH 💅
• tca — Transport-Command Area ✨

💜 SEE ALSO 💜

Kernel file ./arch/s390/include/asm/fcx.h — plus the whole bestie squad: struct tcw(9), struct tidaw(9), struct tsa_iostat(9), struct tsa_intrg(9), struct tsb(9), struct dcw_intrg_data(9), struct dcw(9), struct tccb_tcah(9), struct tccb_tcat(9).

That's a wrap, bestie! Source/version tea from ./arch/s390/include/asm, dated October 2026 — struct tccb(9) out. 💖✨