qbman_swp_release(9)

💖 NAME 💖

okay bestie, welcome to the Kernel API Manual corner 💅 this page is literally about qbman_swp_release(9) — Issue a buffer release command. That’s the whole main-character job. 🎀

✨ SYNOPSIS ✨

int qbman_swp_release (struct qbman_swp *s , const struct qbman_release_desc *d , const u64 *buffers , unsigned int num_buffers );

🎀 ARGUMENTS 🎀

• s — the software portal object, aka the portal bestie in question 🫶
• d — the release descriptor, no cap ✨
• buffers — a pointer pointing to the buffer address to be released, iconic pointer behavior 💅
• num_buffers — number of buffers to be released, and bestie, it must be less than 8. that’s the rule, periodt 🚨

🌸 DESCRIPTION 🌸

Return 0 for success, -EBUSY if the release command ring is not ready. that’s the vibe check, fr fr 💖

🦋 SEE ALSO 🦋

Kernel file: ./drivers/soc/fsl/dpio/qbman-portal.h

the whole friend group is here, lowkey:

• 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_schedule(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_pull(9)
• qbman_swp_dqrr_next(9)

<cute>made with 💜 from the ./drivers/soc/fsl/dpio source/version corner, dated October 2026 — slay and read the docs responsibly 🧚✨</cute>