i40e_clean_rx_irq(9)

💖 i40e_clean_rx_irq — the kernel API manual, but make it make sense 💖

okay so bestie, welcome to i40e_clean_rx_irq(9), straight out of the Kernel API Manual ✨ this one's a little function with a big job and honestly it's giving "quiet luxury" — it doesn't say much, but every word matters 💅

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🎀 NAME 🎀

i40e_clean_rx_irq — clean completed descriptors from the Rx ring, bounce buf style 🦋

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✨ SYNOPSIS ✨

int i40e_clean_rx_irq (struct i40e_ring *rx_ring , int budget , unsigned
       int *rx_cleaned );

like, three arguments, one int return, no drama 💜

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🌸 ARGUMENTS 🌸

• rx_ring — the rx descriptor ring she's transacting packets on. this is the main character 🫶
• budget — the total limit on how many packets we're allowed to process. think of it as the "okay we can't stay at this party forever" number 💀
• rx_cleaned — an out parameter holding the number of packets processed. yes, out parameter, she reports back on her way out 🙈

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💅 DESCRIPTION 💅

so this function is literally giving "bounce buffer" approach to Rx interrupt processing 🔥 and the whole point? on systems where IOMMU access has expensive overhead, this is the move — it avoids that overhead by maintaining the mapping of the page to the system. lowkey genius, highkey iconic 👑

and yeah, it returns the amount of work completed. that's it. that's the flex. periodt 💖

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🌈 SEE ALSO 🌈

the whole friend group shows up, fr fr — and the kernel file is ./drivers/net/ethernet/intel/i40e/i40e_txrx.c 🧚

i40e_fdir(9), i40e_program_fdir_filter(9), i40e_create_dummy_packet(9), i40e_create_dummy_udp_packet(9), i40e_create_dummy_tcp_packet(9), i40e_create_dummy_sctp_packet(9), i40e_prepare_fdir_filter(9), i40e_change_filter_num(9), i40e_add_del_fdir_udp(9), i40e_add_del_fdir_tcp(9), i40e_add_del_fdir_sctp(9), i40e_add_del_fdir_ip(9), i40e_add_del_fdir(9), i40e_fd_handle_status(9), i40e_unmap_and_free_tx_resource(9), i40e_clean_tx_ring(9), i40e_free_tx_resources(9), i40e_get_tx_pending(9), i40e_detect_recover_hung(9), i40e_clean_tx_irq(9), i40e_enable_wb_on_itr(9), i40e_force_wb(9), i40e_update_itr(9), i40e_reuse_rx_page(9), i40e_clean_programming_status(9), i40e_setup_tx_descriptors(9), i40e_clean_rx_ring(9), i40e_free_rx_resources(9), i40e_setup_rx_descriptors(9), i40e_release_rx_desc(9), i40e_alloc_mapped_page(9), i40e_alloc_rx_buffers(9), i40e_rx_checksum(9), i40e_rx_hash(9), i40e_process_skb_fields(9), i40e_cleanup_headers(9), i40e_can_reuse_rx_page(9), i40e_rx_buffer_flip(9), i40e_get_rx_buffer(9), i40e_put_rx_buffer(9), i40e_process_rx_buffs(9), i40e_construct_skb(9), i40e_build_skb(9), i40e_is_non_eop(9), i40e_run_xdp(9), i40e_xdp_ring_update_tail(9), i40e_update_rx_stats(9), i40e_finalize_xdp_rx(9), i40e_inc_ntp(9), i40e_add_xdp_frag(9), i40e_consume_xdp_buff(9), i40e_buildreg_itr(9), i40e_update_enable_itr(9), i40e_napi_poll(9), i40e_atr(9), i40e_tx_prepare_vlan_flags(9), i40e_tso(9), i40e_tsyn(9), i40e_tx_enable_csum(9), i40e_create_tx_ctx(9), __i40e_maybe_stop_tx(9), __i40e_chk_linearize(9), i40e_tx_map(9), i40e_xmit_xdp_ring(9), i40e_xmit_frame_ring(9), i40e_lan_xmit_frame(9), i40e_xdp_xmit(9)

not me listing the entire group chat 😭 but every single one is invited, no cap 🍓

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💀 reminder: keep the budget honoured, bestie — that's the whole point of the limit.

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✨ that's the page! ✨ this lil gem lives under ./drivers/net/ethernet/intel/i40e, dated October 2026, and she's officially i40e_clean_rx_irq(9) from the Kernel API Manual — mwah, go clean some Rx descriptors 💋🎀🦋