t4_sge_alloc_eth_txq(9)

💅 t4_sge_alloc_eth_txq(9) — or, "let's get this Ethernet TX Queue a whole personality"

okay so bestie, welcome to the Kernel API Manual section 9 page for t4_sge_alloc_eth_txq — yes that whole mouthful is the name, and yes you will be saying it out loud at some point, sorry in advance 🎀

This is the function that allocates an Ethernet TX Queue, periodt. That's the whole vibe. Let's get into it.

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✨ SYNOPSIS ✨

int t4_sge_alloc_eth_txq (struct adapter *adap , struct sge_eth_txq *txq
, struct net_device *dev , struct netdev_queue *netdevq , unsigned int iqid
, u8 dbqt );

Look at that signature. Six arguments. She's highkey doing the most, but every single one of them is iconic and necessary, so we respect her 💅

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🌸 ARGUMENTS 🌸

Six besties walk into a function. Let me introduce you:

• adap — the adapter 🫶 this is the big one, the main character of the hardware situation.
• txq — the SGE Ethernet TX Queue to initialize. This is the actual thing getting set up, so like… pay attention to her.
• dev — the Linux Network Device. Your classic netdev, showing up as always.
• netdevq — the corresponding Linux TX Queue. Yes it's spelled almost the same as the previous one and yes that is a trap, don't mix them up bestie 😭
• iqid — the Ingress Queue to which to deliver CIDX Update messages. Say it with me: CIDX Update messages. You're gonna want to remember which queue those go to.
• dbqt — whether this TX Queue will use the SGE Doorbell Queue Timers. That's a u8, it's a yes/no kinda situation, and the function is literally asking you to decide. No pressure or anything 💀

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🔥 SEE ALSO 🔥

okay this is the part where the page absolutely ate — the related-pages list is enormous and honestly kind of iconic. They all live in the kernel file ./drivers/net/ethernet/chelsio/cxgb4/sge.c, and here's every single one, no cap, nothing skipped, because we don't do that here:

• 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_ring_tx_db(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_free_sge_resources(9), t4_sge_stop(9), t4_sge_init_soft(9), t4_sge_init(9)

That's sixty. SIXTY. She really said "I have friends" and meant it 💀💖

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🦋 quick note bestie: everything above lives under the kernel file ./drivers/net/ethernet/chelsio/cxgb4/sge.c — that's your map if you get lost.

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and that's the page!! 🌈 This lil manual came from ./drivers/net/ethernet/chelsio... and it's dated October 2026 — so mark your calendar, screenshot this, send it to the group chat, and go allocate a TX Queue like the main character you are 👑💜