hisi_qp_send(9)

hisi_qp_send 💅✨

okay so bestie, this is the Kernel API Manual page for the hisi queue-pair send situation. it’s giving “hardware queue, but make it a function call.” let’s get into it 🫶

🌸 NAME 🌸

hisi_qp_send — Queue up a task in the hardware queue. that’s the whole plot.

✨ SYNOPSIS ✨

int hisi_qp_send (struct hisi_qp *qp , const void *msg );

🎀 ARGUMENTS 🎀

• qp — The qp in which to put the message. like, the queue pair that’s getting the message.
• msg — The message. the thing being sent, periodt.

💖 DESCRIPTION 💖

so hisi_qp_send is gonna hand you <red>**-EBUSY**</red> if qp is currently full, and <yellow>**-EAGAIN**</yellow> if the qm related to that qp is resetting. that’s the return-value tea 🍵

🫶 NOTE 🫶

real talk, this is the part where the concurrency girlies need to pay attention 👑

• This function may run with qm_irq_thread and ACC reset happening at same time.
• It has no race with qm_irq_thread.
• However, during hisi_qp_send, ACC reset may happen, and we have no lock here considering performance.
• This causes the current qm_db sending fail or can not receive sended sqe.
• QM sync/async receive function should handle the error sqe.
• ACC reset done function should clear used sqe to 0.

🌈 SEE ALSO 🌈

• Kernel file ./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)
• qm_drain_qp(9)
• hisi_qm_stop_qp(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)

made with 💖 from source ./drivers/crypto/hisilicon, page version hisi_qp_send(9), dated October 2026. she’s iconic, she’s kernel-coded, and this is the sign-off 🦋✨