add_one_rx_buf(9)

💖 NAME 💖

hey bestie!! welcome to the Kernel API Manual page for add_one_rx_buf(9) — manual name folded in right here, cute and accounted for. 💅

add_one_rx_buf — add a packet buffer to a free-buffer list. that's the name, that's the vibe, and yes it ate.

✨ SYNOPSIS ✨

int add_one_rx_buf (void *va , unsigned int len , struct rx_desc *d ,
struct rx_sw_desc *sd , unsigned int gen , struct pci_dev *pdev );

🎀 ARGUMENTS 🎀

okay so here's the whole cast, no skips:

• va — buffer start VA. the buffer's starting point, periodt.
• len — the buffer length. how long the buffer is, literally.
• d — the HW Rx descriptor to write. hardware descriptor getting written, get into it.
• sd — the SW Rx descriptor to write. software descriptor also getting written, obsessed.
• gen — the generation bit value. the generation bit value, iconic.
• pdev — the PCI device associated with the adapter. the PCI device tied to the adapter, iykyk.

🌸 DESCRIPTION 🌸

Add a buffer of the given length to the supplied HW and SW Rx descriptors.

that's it, that's the whole magic — a buffer of the given length goes onto the supplied HW and SW Rx descriptors. slay. no extra lore, bestie.

🦋 SEE ALSO 🦋

Kernel file ./drivers/net/ethernet/chelsio/cxgb3/sge.c. and the whole function bestie squad is:

• 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), 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), 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)

okay that's the whole page!! this add_one_rx_buf(9) entry is from the Kernel API Manual, source/version ./drivers/net/ethernet/chelsio..., dated October 2026. mwah, go add those buffers bestie 💖✨🎀