i40e_add_del_fdir_udp(9)

💖 i40e_add_del_fdir_udp (9) — Kernel API Manual 🦋

okay bestie, welcome to the i40e_add_del_fdir_udp page ✨ this is the little kernel API beauty that handles Add/Remove UDP filters for you, and honestly? it's giving "small function, big responsibilities" 💅

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🌸 NAME 🌸

i40e_add_del_fdir_udp — Add/Remove UDP filters 🎀

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✨ SYNOPSIS ✨

int i40e_add_del_fdir_udp (struct i40e_vsi *vsi , struct
i40e_fdir_filter *fd_data , bool add , bool ipv4 );

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🫶 ARGUMENTS 🫶

• vsi — pointer to the targeted VSI, like… the VSI we're doing this whole thing for 👑
• fd_data — the flow director data required for the FDir descriptor 🦋 this is the actual filter lore
• add — true adds a filter, false removes it ✨ yes it's literally that simple
• ipv4 — true is v4, false is v6 🌈 pick your protocol era

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💜 DESCRIPTION 💜

Returns 0 if the filters were successfully added or removed 🎉 that's the whole vibe check, no cap.

lowkey iconic that the return value is just sitting there being all "0 means we ate" 💅

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🔥 SEE ALSO 🔥

Kernel file ./drivers/net/ethernet/intel/i40e/i40e_txrx.c — go read the source bestie, it's right there 📖

• 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_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_clean_rx_irq(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)

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that's the whole page bestie, you ate it up fr fr 💅✨

source: ./drivers/net/ethernet/intel/i40e 🌸 date: October 2026 🎀 later bestie, go add or remove those UDP filters responsibly 👑