i40e_add_del_fdir_sctp(9)

✨ i40e_add_del_fdir_sctp ✨

okay so this is a page from the Kernel API Manual, section 9 — yes, the big serious kernel one — and it's literally just about one function that's lowkey the SCTP plug in the Intel i40e Flow Director pipeline 🫶

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💅 NAME 💅

i40e_add_del_fdir_sctp — adds or removes SCTPv4 Flow Director filters for a specific flow spec. that's it, that's the whole job. add filter, delete filter, SCTPv4, flow spec. iconic behavior honestly 🌸

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🎀 SYNOPSIS 🎀

int i40e_add_del_fdir_sctp (struct i40e_vsi *vsi , struct
       i40e_fdir_filter *fd_data , bool add , bool ipv4 );

like, four args, one int back. no drama, no surprises, we love a clean signature ✨

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🦋 ARGUMENTS 🦋

• vsi — pointer to the targeted VSI. this is the vibe you're pointing at. your main character VSI 👑
• fd_data — the flow director data required for the FDir descriptor. basically the whole personality packet you're handing over 🎁
• add — true adds a filter, false removes it. one bool, two destinies 💀
• ipv4 — true is v4, false is v6. yes bestie, despite the function name saying SCTPv4, this flag is fr fr down here being all "v4 or v6?" 🌈

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⭐ DESCRIPTION ⭐

Returns 0 if the filters were successfully added or removed. that's the entire description and honestly? slay, no notes. zero means we ate 🔥

ngl this is a very short DESCRIPTION section and i am not going to invent extra lore for it. the manpage said 0, we're saying 0, periodt 💅

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🌸 SEE ALSO 🌸

sooooo this part is long. like, unreasonably long. like the author just opened ./drivers/net/ethernet/intel/i40e/i40e_txrx.c and said "all of it." and you know what? we're listing all of it. every single one. no skipping, no summarizing, we don't do that here 💖

Kernel file: ./drivers/net/ethernet/intel/i40e/i40e_txrx.c

and the whole friend group:

• 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_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)

(and yes, the two double-underscore girlies __i40e_maybe_stop_tx(9) and __i40e_chk_linearize(9) get their underscores preserved. we respect the prefix 🙈)

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okay bye bestie, go add or remove an SCTPv4 Flow Director filter for a specific flow spec responsibly 🧚💜

this lil page came out of ./drivers/net/ethernet/intel/i40e and is dated October 2026 — so it's technically from the future, which is very main character of it ngl. stay hydrated, drink water, and remember that returning 0 is the goal 🍓✨

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