cxgb4_eth_xmit(9)

🌸 NAME 🌸

okay bestie, welcome to the cxgb4_eth_xmit(9) page in the Kernel API Manual. This one is literally “add a packet to an Ethernet Tx queue” — that’s the whole NAME vibe. 💅

✨ SYNOPSIS ✨

the signature, exactly as it appears, no edits:

netdev_tx_t cxgb4_eth_xmit (struct sk_buff *skb , struct net_device *dev
);

🎀 ARGUMENTS 🎀

• skb — the packet. yes, that packet.
• dev — the egress net device. the one doing the egress thing, periodt.

💅 DESCRIPTION 💅

so this function adds a packet to an SGE Ethernet Tx queue. that’s the main character move. ✨

heads up bestie: it runs with softirqs disabled. not me forgetting that — keep it in mind. 😭

🌈 SEE ALSO 🌈

the whole squad, preserved with love and exact names:

• Kernel file: ./drivers/net/ethernet/chelsio/cxgb4/sge.c
• 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), 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)

okay bye bestie, mwah 💖 — source/version: ./drivers/net/ethernet/chelsio... · date: October 2026 · page: cxgb4_eth_xmit(9)