iavf_fdir_add_fltr(9)

💖 iavf_fdir_add_fltr — a kernel API manual moment 💖

okay so bestie, welcome to the iavf_fdir_add_fltr(9) page — yes that's the whole manual name, and yes it lives in the Kernel API Manual section, we love a legend with a section number. buckle up, this one's short but it's iconic. 🎀

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✨ NAME ✨

iavf_fdir_add_fltr — add a new node to the flow director filter list 🦋

like, literally just drops a fresh node into the list. no cap, that's the whole gig.

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✨ SYNOPSIS ✨

int iavf_fdir_add_fltr (struct iavf_adapter *adapter , struct
       iavf_fdir_fltr *fltr );

it's giving "two pointers and a return int", and honestly? ate. 💅

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✨ ARGUMENTS ✨

• adapter — pointer to the VF adapter structure 🫶 that's the VF adapter, the main character of the whole operation.
• fltr — filter node to add to structure 🌸 the actual filter node you're stuffing into the structure.

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✨ RETURN ✨

returns 0 on success, or a negative errno on failure. so if you see a negative number coming back, that's your sign something went sideways, bestie 😭

no vibe check passes forever — always check that return value. fr fr.

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✨ SEE ALSO ✨

and now the friend group 🌈 — the kernel file itself plus the whole fdir extended fam:

• Kernel file ./drivers/net/ethernet/intel/iavf/iavf_fdir.c 📁

and the crew: 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_l4_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_del_fltr(9) 💜

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that's the whole page, babe — go forth and add those filter nodes responsibly ✨

okay and like, the tiny credits at the bottom of the og: it's from ./drivers/net/ethernet/intel/iavf, dated October 2026. slay, mwah 💋🎀