qed_set_queue_coalesce(9)

🎀 NAME 🎀

okay so this is the qed_set_queue_coalesce(9) page from the Kernel API Manual, and it's literally about one thing: Configure coalesce parameters for Rx and Tx queue. Bestie, we are keeping all the caveats because this is not a vibe-check-only situation.

The fact that we can configure coalescing to up to 511 is real, but it comes with varying accuracy — [the bigger the value the less accurate] — up to a mistake of 3usec for the highest values. And while the API allows setting coalescing per-qid, all queues sharing a SB should be in same range [i.e., either 0-0x7f, 0x80-0xff or 0x100-0x1ff] otherwise configuration would break. so yeah, that's the main-character rule, no cap 💅

🌸 SYNOPSIS 🌸

int qed_set_queue_coalesce (u16 rx_coal , u16 tx_coal , void *p_handle
       );

🦋 ARGUMENTS 🦋

• rx_coal — Rx Coalesce value in micro seconds. that's the Rx side's little timing knob ✨
• tx_coal — TX Coalesce value in micro seconds. same energy, but for TX 🫶
• p_handle — P_handle. yes bestie, that's the whole description, iconic and mysterious 🎀

🔥 RETURN 🔥

Int. — that's the return, periodt. 💖

🌈 SEE ALSO 🌈

Kernel file: ./drivers/net/ethernet/qlogic/qed/qed_dev_api.h

• qed_init_dp(9)
• qed_init_struct(9)
• qed_resc_free(9)
• qed_resc_alloc(9)
• qed_resc_setup(9)
• qed_hw_init(9)
• qed_hw_timers_stop_all(9)
• qed_hw_stop(9)
• qed_hw_stop_fastpath(9)
• qed_hw_start_fastpath(9)
• qed_hw_prepare(9)
• qed_hw_remove(9)
• qed_ptt_acquire(9)
• qed_ptt_acquire_context(9)
• qed_ptt_release(9)
• qed_dmae_host2grc(9)
• qed_dmae_host2host(9)
• qed_fw_l2_queue(9)
• qed_fw_vport(9)
• qed_fw_rss_eng(9)
• qed_llh_get_num_ppfid(9)
• qed_llh_set_ppfid_affinity(9)
• qed_llh_set_roce_affinity(9)
• qed_llh_add_mac_filter(9)
• qed_llh_remove_mac_filter(9)
• qed_llh_add_protocol_filter(9)
• qed_llh_remove_protocol_filter(9)
• qed_final_cleanup(9)
• qed_get_queue_coalesce(9)
• qed_pglueb_set_pfid_enable(9)
• qed_db_recovery_add(9)
• qed_db_recovery_del(9)

That's the whole page, bestie — this cutie comes from ./drivers/net/ethernet/qlogic/qed, dated October 2026. 💖✨