iavf_fill_fdir_l4_hdr(9)

💖 iavf_fill_fdir_l4_hdr(9) 💖

okay so bestie, we're in the Kernel API Manual, section 9 (the kernel API one, iykyk), and today's main character is iavf_fill_fdir_l4_hdr — the function whose whole job is filling in the L4 protocol header. no cap. 🦋

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✨ NAME ✨

iavf_fill_fdir_l4_hdr — fill the L4 protocol header 💅

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🌸 SYNOPSIS 🌸

int iavf_fill_fdir_l4_hdr (struct iavf_fdir_fltr *fltr , struct
       virtchnl_proto_hdrs *proto_hdrs );

like, it returns an int, it takes two structs, that's the whole vibe. 🎀

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🫶 ARGUMENTS 🫶

• fltr — the Flow Director filter data structure. that's the filter bestie itself 💖
• proto_hdrs — the Flow Director protocol headers data structure. this is where the headers live ✨

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🔥 DESCRIPTION 🔥

Returns 0 if the L4 protocol header is set successfully. that's it, that's the slay. one return value, zero drama, no notes. 👑

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🌈 SEE ALSO 🌈

the whole friend group, ok? literally every one of them:

• Kernel file ./drivers/net/ethernet/intel/iavf/iavf_fdir.c
• iavf_validate_fdir_fltr_masks(9)
• iavf_pkt_udp_no_pay_len(9)
• iavf_fill_fdir_gtpu_hdr(9)
• iavf_fill_fdir_pfcp_hdr(9)
• iavf_fill_fdir_nat_t_esp_hdr(9)
• iavf_fill_fdir_udp_flex_pay_hdr(9)
• iavf_fill_fdir_ip4_hdr(9)
• iavf_fill_fdir_ip6_hdr(9)
• iavf_fill_fdir_tcp_hdr(9)
• iavf_fill_fdir_udp_hdr(9)
• iavf_fill_fdir_sctp_hdr(9)
• iavf_fill_fdir_ah_hdr(9)
• iavf_fill_fdir_esp_hdr(9)
• iavf_fill_fdir_eth_hdr(9)
• iavf_fill_fdir_add_msg(9)
• iavf_fdir_flow_proto_name(9)
• iavf_print_fdir_fltr(9)
• iavf_fdir_is_dup_fltr(9)
• iavf_find_fdir_fltr(9)
• iavf_fdir_add_fltr(9)
• iavf_fdir_del_fltr(9)

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💀 reminder bestie: this page lives at ./drivers/net/ethernet/intel/iavf and it's dated October 2026 — that's the source/version and date of this whole thing, and the page title is iavf_fill_fdir_l4_hdr(9), so now you know the lore. 🧚✨

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anyway that's the page!! go fill those headers, you're gonna ate 🍓💜 periodt.