cxgb4_ring_tx_db(9)

💅 cxgb4_ring_tx_db — check and potentially ring a Tx queue's doorbell

okay so bestie, this one's from the kernel API manual (cxgb4_ring_tx_db(9)), and honestly? short and sweet. no cap. let's get into it 🎀

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✨ SYNOPSIS ✨

void cxgb4_ring_tx_db (struct adapter *adap , struct sge_txq *q , int n );

that's the whole thing. one function, three args, zero drama. 💅

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🌸 ARGUMENTS 🌸

• adap — the adapter. literally the NIC's whole personality.
• q — the Tx queue. this is the queue, the main character.
• n — number of new descriptors to give to HW. like, "hey hardware, here's n fresh ones, come get 'em" 🫶

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🦋 DESCRIPTION 🦋

Ring the doorbell for a Tx queue. that's it, that's the function. 🔔✨

lowkey iconic how the description is one sentence. respect. 💜

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👑 SEE ALSO 👑

bestie this list is long — it's giving family reunion. everything here is from the kernel file ./drivers/net/ethernet/chelsio/cxgb4/sge.c, so buckle up: 🌈

• txq_avail(9)
• fl_cap(9)
• fl_starving(9)
• deferred_unmap_destructor(9)
• free_tx_desc(9)
• reclaim_completed_tx(9)
• cxgb4_reclaim_completed_tx(9)
• free_rx_bufs(9)
• unmap_rx_buf(9)
• refill_fl(9)
• alloc_ring(9)
• sgl_len(9)
• flits_to_desc(9)
• is_eth_imm(9)
• calc_tx_flits(9)
• cxgb4_write_sgl(9)
• cxgb4_inline_tx_skb(9)
• t4_sge_eth_txq_egress_update(9)
• cxgb4_eth_xmit(9)
• t4vf_is_eth_imm(9)
• t4vf_calc_tx_flits(9)
• cxgb4_vf_eth_xmit(9)
• reclaim_completed_tx_imm(9)
• cxgb4_ethofld_send_flowc(9)
• is_imm(9)
• ctrlq_check_stop(9)
• ctrl_xmit(9)
• restart_ctrlq(9)
• t4_mgmt_tx(9)
• is_ofld_imm(9)
• calc_tx_flits_ofld(9)
• txq_stop_maperr(9)
• ofldtxq_stop(9)
• service_ofldq(9)
• ofld_xmit(9)
• restart_ofldq(9)
• skb_txq(9)
• is_ctrl_pkt(9)
• t4_ofld_send(9)
• cxgb4_ofld_send(9)
• ofld_xmit_direct(9)
• t4_crypto_send(9)
• cxgb4_crypto_send(9)
• cxgb4_pktgl_to_skb(9)
• t4_pktgl_free(9)
• cxgb4_sgetim_to_hwtstamp(9)
• t4_systim_to_hwstamp(9)
• t4_rx_hststamp(9)
• t4_tx_hststamp(9)
• t4_tx_completion_handler(9)
• t4_ethrx_handler(9)
• restore_rx_bufs(9)
• is_new_response(9)
• rspq_next(9)
• process_responses(9)
• napi_rx_handler(9)
• t4_intr_handler(9)
• bar2_address(9)
• t4_sge_alloc_eth_txq(9)
• t4_free_sge_resources(9)
• t4_sge_stop(9)
• t4_sge_init_soft(9)
• t4_sge_init(9)

go read them all, i'll wait. 🍓

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and that's the tea! 🧚 sign-off time: this lil page lives in the source/version ./drivers/net/ethernet/chelsio... and it's dated October 2026 — so yeah, she's from the future, obviously. slay. 💖✨