t3_eth_xmit(9)

💅 t3_eth_xmit — from the Kernel API Manual, bestie 🫶

okay so real talk, this page lives in the Kernel API Manual (section 9, the fun one) and it's literally about handing a packet to the Ethernet Tx queue. that's the whole vibe. let's get into it ✨

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✨ NAME ✨

t3_eth_xmit — add a packet to the Ethernet Tx queue. yes that's it, that's the whole job, and it does it gorgeously 💖

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🎀 SYNOPSIS 🎀

netdev_tx_t t3_eth_xmit (struct sk_buff *skb , struct net_device *dev );

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🌸 ARGUMENTS 🌸

• skb — the packet itself. the little guy. the payload princess 👑
• dev — the egress net device, aka the door this packet is walking out of 🚪

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🦋 DESCRIPTION 🦋

so what does it do? it adds a packet to an SGE Tx queue. simple, iconic, no notes 💅

⚠️ heads up though: this runs with softirqs disabled. keep that in mind, it's not a drill, it's just the context you're operating in 😌

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🔥 SEE ALSO 🔥

these all live in the kernel file ./drivers/net/ethernet/chelsio/cxgb3/sge.c and honestly? the whole friend group showed up. every single one, no cap:

• refill_rspq(9)
• need_skb_unmap(9)
• unmap_skb(9)
• free_tx_desc(9)
• reclaim_completed_tx(9)
• should_restart_tx(9)
• free_rx_bufs(9)
• add_one_rx_buf(9)
• refill_fl(9)
• recycle_rx_buf(9)
• alloc_ring(9)
• t3_reset_qset(9)
• t3_free_qset(9)
• init_qset_cntxt(9)
• sgl_len(9)
• flits_to_desc(9)
• get_packet(9)
• get_packet_pg(9)
• get_imm_packet(9)
• calc_tx_descs(9)
• write_sgl(9)
• check_ring_tx_db(9)
• write_wr_hdr_sgl(9)
• write_tx_pkt_wr(9)
• write_imm(9)
• check_desc_avail(9)
• reclaim_completed_tx_imm(9)
• ctrl_xmit(9)
• restart_ctrlq(9)
• deferred_unmap_destructor(9)
• write_ofld_wr(9)
• calc_tx_descs_ofld(9)
• ofld_xmit(9)
• restart_offloadq(9)
• queue_set(9)
• is_ctrl_pkt(9)
• t3_offload_tx(9)
• offload_enqueue(9)
• deliver_partial_bundle(9)
• ofld_poll(9)
• rx_offload(9)
• restart_tx(9)
• cxgb3_arp_process(9)
• rx_eth(9)
• lro_add_page(9)
• handle_rsp_cntrl_info(9)
• check_ring_db(9)
• is_new_response(9)
• process_responses(9)
• napi_rx_handler(9)
• process_pure_responses(9)
• handle_responses(9)
• t3_intr_handler(9)
• t3_sge_err_intr_handler(9)
• sge_timer_tx(9)
• sge_timer_rx(9)
• t3_update_qset_coalesce(9)
• t3_sge_alloc_qset(9)
• t3_start_sge_timers(9)
• t3_stop_sge_timers(9)
• t3_free_sge_resources(9)
• t3_sge_start(9)
• t3_sge_stop_dma(9)
• t3_sge_stop(9)
• t3_sge_init(9)
• t3_sge_prep(9)

like, the entire roster. go read them, they're all eating 🔥

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okay that's the page!! 💜 this one came from ./drivers/net/ethernet/chelsio... (the source path, truncated exactly like that, don't come for me) and it's dated October 2026, filed under t3_eth_xmit(9). mwah, go ship some packets 🍓🧚