ice_fdir_is_dup_fltr(9)

💅 ice_fdir_is_dup_fltr — like, the vibe check for your Flow Director filters 🦋

okay so bestie, welcome to section 9 of the Kernel API Manual, aka where the kernel devs keep the deep lore 👑. Today's main character is ice_fdir_is_dup_fltr, and honestly? she's short, she's sweet, and she does exactly one (1) thing. periodt. 🎀

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✨ NAME ✨

ice_fdir_is_dup_fltr — test if filter is already in list for PF 💖

(yes babes, "PF" like physical function. iykyk 🧚)

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🌸 SYNOPSIS 🌸

bool ice_fdir_is_dup_fltr (struct ice_hw *hw , struct ice_fdir_fltr
*input );

she takes two args and gives you back a bool. no cap, that's the whole signature 💅

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🎀 ARGUMENTS 🎀

• hw — the hardware data structure. like, the actual NIC's whole personality, handed to you as a struct 🖥️✨
• input — the Flow Director filter data structure. this is the filter you're asking about, bestie 🍓

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💀 DESCRIPTION 💀

Returns true if the filter is found in the list.

that's it. that's the description. she's not gonna overexplain herself, and honestly? respect. 🙈

so yeah — you hand her the hardware and a filter, she has a little look through the list, and she tells you whether your filter is already chilling in there. true means "yes bestie, been there"; anything else means it's new here. 🌈

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🔥 SEE ALSO 🔥

the whole friend group 💜 — first off, the kernel file herself:

• ./drivers/net/ethernet/intel/ice/ice_fdir.c

and now the group chat, in order, because we don't do chaos (we do organised chaos):

• ice_set_dflt_val_fd_desc(9)
• ice_set_fd_desc_val(9)
• ice_fdir_get_prgm_desc(9)
• ice_alloc_fd_res_cntr(9)
• ice_free_fd_res_cntr(9)
• ice_alloc_fd_guar_item(9)
• ice_alloc_fd_shrd_item(9)
• ice_get_fdir_cnt_all(9)
• ice_pkt_insert_ipv6_addr(9)
• ice_pkt_insert_u6_qfi(9)
• ice_pkt_insert_u8(9)
• ice_pkt_insert_u8_tc(9)
• ice_pkt_insert_u16(9)
• ice_pkt_insert_u32(9)
• ice_pkt_insert_mac_addr(9)
• ice_fdir_get_gen_prgm_pkt(9)
• ice_fdir_has_frag(9)
• ice_fdir_find_fltr_by_idx(9)
• ice_fdir_list_add_fltr(9)
• ice_fdir_update_cntrs(9)
• ice_cmp_ipv6_addr(9)
• ice_fdir_comp_rules(9)

no gatekeeping here, she'll introduce you to everyone 🫶

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✨ ok that's the page!! ✨ this little masterpiece lives in ./drivers/net/ethernet/intel/ice, and the version we're all reading is the October 2026 era of the Kernel API Manual. mwah, go touch some filters 💋🌸💖