free_tx_desc(9)

💖 free_tx_desc(9) — your Kernel API Manual bestie 💖

🌸 NAME 🌸

free_tx_desc — reclaims TX descriptors and their buffers. That's literally the whole vibe: reclaiming TX descriptors and their buffers, no cap 💅

✨ SYNOPSIS ✨

Okay bestie, here's the signature, copy-paste energy only:

void free_tx_desc (struct adapter *adapter , struct sge_txq *tq ,
       unsigned int n , bool unmap );

🎀 ARGUMENTS 🎀

These are the little cuties you pass in:

• adapter — the adapter ✨
• tq — the TX queue to reclaim descriptors from 🎀
• n — the number of descriptors to reclaim 🔢
• unmap — whether the buffers should be unmapped for DMA 🦋

🦋 DESCRIPTION 🦋

Okay so real talk: free_tx_desc reclaims TX descriptors from an SGE TX queue and frees the associated TX buffers. It's called with the TX queue lock held — that lock detail is giving “do not forget” energy, fr fr. Periodt 👑

💜 SEE ALSO 💜

Kernel file squad plus the whole reference friend group:

• Kernel file ./drivers/net/ethernet/chelsio/cxgb4vf/sge.c
• get_buf_addr(9)
• is_buf_mapped(9)
• need_skb_unmap(9)
• txq_avail(9)
• fl_cap(9)
• fl_starving(9)
• map_skb(9)
• reclaim_completed_tx(9)
• get_buf_size(9)
• free_rx_bufs(9)
• unmap_rx_buf(9)
• ring_fl_db(9)
• set_rx_sw_desc(9)
• refill_fl(9)
• alloc_ring(9)
• sgl_len(9)
• flits_to_desc(9)
• is_eth_imm(9)
• calc_tx_flits(9)
• write_sgl(9)
• ring_tx_db(9)
• inline_tx_skb(9)
• t4vf_eth_xmit(9)
• copy_frags(9)
• t4vf_pktgl_to_skb(9)
• t4vf_pktgl_free(9)
• do_gro(9)
• t4vf_ethrx_handler(9)
• is_new_response(9)
• restore_rx_bufs(9)
• rspq_next(9)
• process_responses(9)
• napi_rx_handler(9)
• t4vf_intr_handler(9)
• sge_rx_timer_cb(9)
• sge_tx_timer_cb(9)
• bar2_address(9)
• t4vf_sge_alloc_rxq(9)
• t4vf_sge_alloc_eth_txq(9)
• t4vf_free_sge_resources(9)
• t4vf_sge_start(9)
• t4vf_sge_stop(9)
• t4vf_sge_init(9)

Source/version cute sign-off: this page comes from ./drivers/net/ethernet/chelsio..., dated October 2026, and it's literally free_tx_desc(9) — mwah 💖🎀✨