qbman_swp_fq_schedule(9)

✨ qbman_swp_fq_schedule ✨

okay so bestie, this is a page from the Kernel API Manual — section 9 if you're keeping track — and it's about one very specific little function that gets a frame queue out of limbo. come sit with me 🫶

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💅 NAME

qbman_swp_fq_schedule — the glow-up that moves the FQ to the scheduled state 💫

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🎀 SYNOPSIS

int qbman_swp_fq_schedule (struct qbman_swp *s , u32 fqid );

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🌸 ARGUMENTS

• s — the software portal object 🦋 (yes, that's the whole description, it's giving "you either know or you don't")
• fqid — the index of the frame queue that needs to be scheduled ✨

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👑 DESCRIPTION

So here's the tea: there are a couple of different ways that a FQ can end up in a parked state, and this function? it schedules it. that's the whole job. main character energy, honestly 💅

It returns 0 for success, or a negative error code for failure. slay either way, but one of them is a lot cuter than the other 😭

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🔥 SEE ALSO

Kernel file ./drivers/soc/fsl/dpio/qbman-portal.h — the whole friend group lives in there, and here's everyone:

• qbman_swp_enqueue(9)
• qbman_swp_enqueue_multiple(9)
• qbman_swp_enqueue_multiple_desc(9)
• qbman_result_is_DQ(9)
• qbman_result_is_SCN(9)
• qbman_result_SCN_state(9)
• qbman_result_SCN_rid(9)
• qbman_result_SCN_ctx(9)
• qbman_swp_fq_force(9)
• qbman_swp_fq_xon(9)
• qbman_swp_fq_xoff(9)
• qbman_swp_CDAN_set_context(9)
• qbman_swp_CDAN_enable(9)
• qbman_swp_CDAN_disable(9)
• qbman_swp_CDAN_set_context_enable(9)
• qbman_swp_release(9)
• qbman_swp_pull(9)
• qbman_swp_dqrr_next(9)

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ngl the "a couple of different ways that a FQ can end up parked state" line is what the original says, word for word — don't come for me, I'm just the messenger 🙈

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and that's the page, bestie!! 🎀 this lil gem comes from ./drivers/soc/fsl/dpio and it's dated October 2026 — so yes, she's from the future, iconic 💜 go forth and schedule those frame queues, ily, bye! 💖✨