restart_tx(9)

💅 restart_tx(9) — like, the Kernel API Manual, but make it make sense ✨

okay so bestie, welcome to restart_tx(9) from the Kernel API Manual 🎀 this one is short and sweet and honestly kinda iconic for it.

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🌸 NAME 🌸

restart_tx — the little vibe check that asks "should we wake the suspended Tx queues back up?" 👑

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✨ SYNOPSIS ✨

void restart_tx (struct sge_qset *qs );

no return value, no drama, she just does the thing 💅

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🫶 ARGUMENTS 🫶

• qs — the queue set to resume. like, the one you're trying to bring back online, no cap 🌈

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💖 DESCRIPTION 💖

So here's the tea 🍓: restart_tx restarts the suspended Tx queues of an SGE queue set — but only if they've got enough free resources to actually resume operation. It's giving "don't start the party till the snacks are ready" energy fr fr 🔥

If the resources aren't there? She simply does not restart them. That's the whole bit. Main character energy, minimal dialogue 💀

ngl this is one of those tiny helper functions that lowkey holds the whole Tx path together. respect her 🫡

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🦋 SEE ALSO 🦋

the whole extended friend group lives in Kernel file ./drivers/net/ethernet/chelsio/cxgb3/sge.c — go say hi to all of them, iykyk 💜

• 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)
• t3_eth_xmit(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)
• 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)

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that's the whole page, bestie, she's a short one but she ate 🍴✨ mwah 💋

— sourced from ./drivers/net/ethernet/chelsio..., dated October 2026 🎀 go forth and restart those queues responsibly 🦋