qm_drain_qp(9)

💖 qm_drain_qp — the Kernel API Manual page, bestie edition 💖

okay so this is a page from the Kernel API Manual, and it's about qm_drain_qp(9). it's short, it's sweet, it's giving "one job, done right" energy. let's get into it 🫶

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✨ NAME ✨

qm_drain_qp — literally just: drain a qp. that's the whole vibe. 💅

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🌸 SYNOPSIS 🌸

int qm_drain_qp (struct hisi_qp *qp );

like, that's it. that's the function. she takes one pointer and hands you back an int. iconic.

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🎀 ARGUMENTS 🎀

• qp — the qp we want to drain. yes, THE qp. your qp. the one you picked. go off 👑

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🦋 DESCRIPTION 🦋

okay so here's the situation, bestie. if the device does not support stopping the queue by sending a mailbox — like, that's just not a thing it can do — then this is how we figure out whether the queue is actually cleared: we judge the tail pointers of sq and cq. 🔥

that's it. that's the whole check. tail pointers of sq and cq, no cap. it's giving "look at the pointers and trust your gut" but make it kernel code 💀

ngl, this one's short because the function is short. some manpages are novels, some are just a vibe check on two pointers. both are valid 🌈

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💜 SEE ALSO 💜

buckle up bestie, this list is LONG and we are not skipping a single one of them, fr fr. also heads up: the kernel file is ./drivers/crypto/hisilicon/qm.c 👀

• struct qm_hw_err(9)
• hisi_qm_get_hw_info(9)
• hisi_qm_create_qp(9)
• hisi_qm_release_qp(9)
• hisi_qm_start_qp(9)
• qp_stop_fail_cb(9)
• hisi_qm_stop_qp(9)
• hisi_qp_send(9)
• qm_hw_err_isolate(9)
• qm_frozen(9)
• hisi_qm_wait_task_finish(9)
• hisi_qm_uninit(9)
• hisi_qm_get_vft(9)
• hisi_qm_set_vft(9)
• hisi_qm_start(9)
• qm_invalid_queues(9)
• hisi_qm_stop(9)
• hisi_qm_dev_err_init(9)
• hisi_qm_dev_err_uninit(9)
• hisi_qm_free_qps(9)
• hisi_qm_alloc_qps_node(9)
• hisi_qm_set_algqos_init(9)
• hisi_qm_sriov_enable(9)
• hisi_qm_sriov_disable(9)
• hisi_qm_sriov_configure(9)
• hisi_qm_dev_err_detected(9)
• hisi_qm_dev_slot_reset(9)
• hisi_qm_dev_shutdown(9)
• hisi_qm_alg_register(9)
• hisi_qm_alg_unregister(9)
• hisi_qm_init(9)
• hisi_qm_get_dfx_access(9)
• hisi_qm_put_dfx_access(9)
• hisi_qm_pm_init(9)
• hisi_qm_pm_uninit(9)
• hisi_qm_suspend(9)
• hisi_qm_resume(9)

thirty-seven entries. i counted. we ate and left no crumbs 🍓

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and that's the page!! ✨ cute little sign-off time: this one lives under ./drivers/crypto/hisilicon, it's dated October 2026, and the page itself is qm_drain_qp(9). mwah, go drain that qp bestie 💖🎀🧚