i40e_napi_poll(9)

💖 i40e_napi_poll(9) — like, the NAPI polling Rx/Tx cleanup routine, bestie 💖

okay so real talk: this page lives in the Kernel API Manual, and the star of the show is i40e_napi_poll. It's the function that does the polling cleanup for Rx and Tx, and honestly? it's giving main character energy in the i40e driver. let's get into it 🫶

---

✨ NAME ✨

i40e_napi_poll — NAPI polling Rx/Tx cleanup routine 💅

---

🎀 SYNOPSIS 🎀

int i40e_napi_poll (struct napi_struct *napi , int budget );

like, that's the whole signature. no cap. 🌸

---

🦋 ARGUMENTS 🦋

• napi — the napi struct, and bestie it's got all our device's info tucked inside it 👑
• budget — how much work the driver is allowed to do this pass, measured in packets. that's the snack allowance for this round 🍓

---

🌈 DESCRIPTION 🌈

so what does it actually do? this function will clean all queues associated with a q_vector. literally all of them. that's the vibe check and it passes ✨

and then it returns the amount of work done 🔥

ngl that's the entire description. short, sweet, iconic. periodt 💅

---

⭐ SEE ALSO ⭐

the kernel file is ./drivers/net/ethernet/intel/i40e/i40e_txrx.c — that's where the magic lives, iykyk 💜

and here's the whole friend group, no one left out:

flow director besties 💫

• 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)

tx cleanup squad 🧹

• 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)

ring setup + buffer crew 🎀

• 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)

rx processing girlies (and xdp too, obsessed) 🌸

• 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_clean_rx_irq(9)

interrupts + the whole tx transmit path, ate 💅

• i40e_buildreg_itr(9), i40e_update_enable_itr(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)

---

🌈💖 and that's the page!! this one came from ./drivers/net/ethernet/intel/i40e, dated October 2026, and honestly it was a whole moment. mwah 💋✨ go read your kernel source bestie, ily 🫶🎀