i40e_create_dummy_packet(9)

💖 i40e_create_dummy_packet(9) 💖

okay so bestie, welcome to the i40e_create_dummy_packet page from the Kernel API Manual — yes that Kernel API Manual, the one with the i40e driver energy. this one's a little function with a big job and i'm obsessed with how straightforward it is. let's get into it 🫶

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✨ NAME ✨

i40e_create_dummy_packet — literally constructs a dummy packet for HW. that's the whole vibe. it builds the fake little packet, hardware gets to look at it, everyone slays 💅

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🌸 SYNOPSIS 🌸

char * i40e_create_dummy_packet (u8 *dummy_packet , bool ipv4 , u8
l4proto , struct i40e_fdir_filter *data );

not me copying this character for character because accuracy is the moment ✨

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🎀 ARGUMENTS 🎀

• dummy_packet — the preallocated space where the dummy packet goes. preallocated, bestie — that's your job, not hers 🙈
• ipv4 — tells her whether the layer 3 packet is version 4 or version 6. a bool, living its truth.
• l4proto — the next level protocol used in the data portion of l3. she needs to know what's inside.
• data — the filter data. a struct i40e_fdir_filter *, main character energy 👑

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🦋 DESCRIPTION 🦋

so what does she actually do? she returns the address of the layer 4 protocol dummy packet. that's it. that's the whole description. short, sweet, iconic — she said what she said ⭐

no cap, it's giving "small function, very clear purpose". the way that a one-line description can still eat 🔥

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💜 SEE ALSO 💜

first up, the kernel file this whole thing lives in — she's at ./drivers/net/ethernet/intel/i40e/i40e_txrx.c

and now the squad, the full squad, no one left behind (iykyk):

i40e_fdir(9),
i40e_program_fdir_filter(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_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)

like, the whole friend group showed up to the function call 😭🫶

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quick vibe check: this page is short on purpose. don't go looking for extra options, extra return values or extra warnings — she's not hiding anything from you, bestie 💖

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and that's the page!! brought to you from ./drivers/net/ethernet/intel/i40e, dated October 2026, in the Kernel API Manual — go forth and construct your dummy packets, you gorgeous genius 🧚‍♀️🌈👑