ice_fdir_write_fltr(9)

💖 NAME 💖

ice_fdir_write_fltr — send a flow director filter to the hardware

okay so welcome to the Kernel API Manual, section 9, bestie ✨ this one is literally about yeeting a flow director filter at the hardware. No cap, that's the whole vibe of the NAME line 🫶

🌸 SYNOPSIS 🌸

int ice_fdir_write_fltr (struct ice_pf *pf , struct ice_fdir_fltr *input
       , bool add , bool is_tun );

🎀 ARGUMENTS 🎀

• pf — PF data structure. That's the main-character struct here 👑
• input — filter structure. The actual filter situation 🧚
• add — true adds filter and false removed filter. Yes bestie, that is the wording, I am not making it up 😭💀
• is_tun — true adds inner filter on tunnel and false outer headers. Tunnel vibes vs outer-header vibes, got it 🌈

✨ DESCRIPTION ✨

so what does it return? It returns 0 on success and negative value on error. That's it, that's the whole description, and honestly? Iconic minimalism 💅 0 is the slay result, negative is the "uh oh" result 🔥

🦋 SEE ALSO 🦋

all the cross-refs are here, no skipping, because we do not skip in this group chat 💖

• Kernel file ./drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
• ice_fltr_to_ethtool_flow(9)
• ice_ethtool_flow_to_fltr(9)
• ice_is_mask_valid(9)
• ice_get_ethtool_fdir_entry(9)
• ice_get_fdir_fltr_ids(9)
• ice_fdir_remap_entries(9)
• ice_fdir_rem_adq_chnl(9)
• ice_fdir_get_hw_prof(9)
• ice_fdir_erase_flow_from_hw(9)
• ice_fdir_rem_flow(9)
• ice_fdir_release_flows(9)
• ice_fdir_replay_flows(9)
• ice_parse_rx_flow_user_data(9)
• ice_fdir_num_avail_fltr(9)
• ice_fdir_alloc_flow_prof(9)
• ice_fdir_prof_vsi_idx(9)
• ice_fdir_set_hw_fltr_rule(9)
• ice_set_init_fdir_seg(9)
• ice_create_init_fdir_rule(9)
• ice_set_fdir_ip4_seg(9)
• ice_set_fdir_ip4_usr_seg(9)
• ice_set_fdir_ip6_seg(9)
• ice_set_fdir_ip6_usr_seg(9)
• ice_fdir_vlan_valid(9)
• ice_set_ether_flow_seg(9)
• ice_set_fdir_vlan_seg(9)
• ice_cfg_fdir_xtrct_seq(9)
• ice_update_per_q_fltr(9)
• ice_fdir_write_all_fltr(9)
• ice_fdir_replay_fltrs(9)
• ice_fdir_create_dflt_rules(9)
• ice_fdir_del_all_fltrs(9)
• ice_vsi_manage_fdir(9)
• ice_fdir_do_rem_flow(9)
• ice_fdir_update_list_entry(9)
• ice_del_fdir_ethtool(9)
• ice_update_ring_dest_vsi(9)
• ice_set_fdir_input_set(9)
• ice_add_fdir_ethtool(9)

mwah 💋 this lil page is signed off from ./drivers/net/ethernet/intel/ice, dated October 2026, for ice_fdir_write_fltr(9) — bestie, we ate and left no crumbs 🫶✨