ice_verify_cacheline_size(9)

💅 ice_verify_cacheline_size(9) — the vibe check for your cache lines

okay so bestie, this is page 9 of the Kernel API Manual and it's about the ice driver doing a little self-care check on its own assumptions. it's short, it's sweet, it's giving "one job and she does it." 🧚

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✨ NAME ✨

ice_verify_cacheline_size — verify the driver's assumption of 64 Byte cache lines. that's it, that's the whole gig. 🎀

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🌸 SYNOPSIS 🌸

void ice_verify_cacheline_size (struct ice_pf *pf );

yes girl, void — she returns nothing. no return value era. 💅

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🦋 ARGUMENTS 🦋

• pf — pointer to the PF structure. that's your PF, your main character, the whole personality of this call honestly. 🫶

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🔥 DESCRIPTION 🔥

so here's the tea ☕ — there is no error returned here. none. not a single one. and that's on purpose, not on accident, before you come for her.

the driver should be able to handle 128 Byte cache lines, so there's genuinely nothing to blow up about. it's not a fail scenario, it's a "hmm let me just log that" scenario.

so instead, we only print a warning in case issues are seen — and specifically with Tx. like, if something's screwy, it'll be the Tx side that tells on itself. so if you see a warning pop out of this bad girl, that's your cue to go look at Tx, iykyk. 👀

ngl the whole design philosophy here is "warn, don't die." she's not dramatic, she's informative. 💀

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🌈 SEE ALSO 🌈

her home base is the kernel file ./drivers/net/ethernet/intel/ice/ice_main.c — that's where she lives, go visit. 🏠

and honestly? she knows everyone. the whole ice friend group is in here, so buckle up buttercup, because here's the full guest list, in order:

ice_hw_to_dev(9), ice_get_tx_pending(9), ice_check_for_hang_subtask(9), ice_init_mac_fltr(9), ice_add_mac_to_sync_list(9), ice_add_mac_to_unsync_list(9), ice_vsi_fltr_changed(9), ice_set_promisc(9), ice_clear_promisc(9), ice_vsi_sync_fltr(9), ice_sync_fltr_subtask(9), ice_pf_dis_all_vsi(9), ice_prepare_for_reset(9), ice_do_reset(9), ice_reset_subtask(9), ice_print_topo_conflict(9), ice_print_link_msg(9), ice_vsi_link_event(9), ice_set_dflt_mib(9), ice_check_phy_fw_load(9), ice_check_module_power(9), ice_check_link_cfg_err(9), ice_link_event(9), ice_watchdog_subtask(9), ice_init_link_events(9), ice_handle_link_event(9), ice_aq_prep_for_event(9), ice_aq_wait_for_event(9), ice_aq_check_events(9), ice_aq_cancel_waiting_tasks(9), __ice_clean_ctrlq(9), ice_ctrlq_pending(9), ice_clean_adminq_subtask(9), ice_clean_mailboxq_subtask(9), ice_clean_sbq_subtask(9), ice_service_task_schedule(9), ice_service_task_complete(9), ice_service_task_stop(9), ice_service_task_restart(9), ice_service_timer(9), ice_mdd_maybe_reset_vf(9), ice_handle_mdd_event(9), ice_init_nvm_phy_type(9), ice_init_link_dflt_override(9), ice_init_phy_cfg_dflt_override(9), ice_init_phy_user_cfg(9), ice_phy_cfg(9), ice_check_media_subtask(9), ice_service_task(9), ice_set_ctrlq_len(9), ice_schedule_reset(9), ice_vsi_ena_irq(9), ice_vsi_req_irq_msix(9), ice_xdp_alloc_setup_rings(9), ice_vsi_assign_bpf_prog(9), ice_map_xdp_rings(9), ice_unmap_xdp_rings(9), ice_prepare_xdp_rings(9), ice_destroy_xdp_rings(9), ice_vsi_rx_napi_schedule(9), ice_vsi_determine_xdp_res(9), ice_max_xdp_frame_size(9), ice_xdp_setup_prog(9), ice_xdp_safe_mode(9), ice_xdp(9), ice_ena_misc_vector(9), ice_ll_ts_intr(9), ice_misc_intr(9), ice_misc_intr_thread_fn(9), ice_dis_ctrlq_interrupts(9), ice_free_irq_msix_ll_ts(9), ice_free_irq_msix_misc(9), ice_ena_ctrlq_interrupts(9), ice_req_irq_msix_misc(9), ice_set_ops(9), ice_set_netdev_features(9), ice_fill_rss_lut(9), ice_pf_vsi_setup(9), ice_ctrl_vsi_setup(9), ice_lb_vsi_setup(9), ice_vlan_rx_add_vid(9), ice_vlan_rx_kill_vid(9), ice_rep_indr_tc_block_unbind(9), ice_tc_indir_block_unregister(9), ice_tc_indir_block_register(9), ice_get_avail_q_count(9), ice_get_avail_txq_count(9), ice_get_avail_rxq_count(9), ice_deinit_pf(9), ice_set_pf_caps(9), ice_init_pf(9), ice_is_wol_supported(9), ice_vsi_recfg_qs(9), ice_set_safe_mode_vlan_cfg(9), ice_log_pkg_init(9), ice_load_pkg(9), ice_send_version(9), ice_init_fdir(9), ice_get_opt_fw_name(9), ice_request_fw(9), ice_init_tx_topology(9), ice_init_supported_rxdids(9), ice_init_ddp_config(9), ice_print_wake_reason(9), ice_register_netdev(9), ice_cfg_netdev(9), ice_load(9), ice_unload(9), ice_probe(9), ice_set_wake(9), ice_setup_mc_magic_wake(9), ice_remove(9), ice_shutdown(9), ice_prepare_for_shutdown(9), ice_reinit_interrupt_scheme(9), ice_suspend(9), ice_resume(9), ice_pci_err_detected(9), ice_pci_err_slot_reset(9), ice_pci_err_resume(9), ice_pci_err_reset_prepare(9), ice_pci_err_reset_done(9), ice_module_init(9), ice_module_exit(9), ice_set_mac_address(9), ice_set_rx_mode(9), ice_set_tx_maxrate(9), ice_fdb_add(9), ice_fdb_del(9), ice_fix_features(9), ice_set_rx_rings_vlan_proto(9), ice_set_vlan_offload_features(9), ice_set_vlan_filtering_features(9), ice_set_vlan_features(9), ice_set_loopback(9), ice_set_features(9), ice_vsi_vlan_setup(9), ice_vsi_cfg_lan(9), ice_init_moderation(9), ice_napi_enable_all(9), ice_up_complete(9), ice_up(9), ice_fetch_u64_tx_stats(9), ice_fetch_u64_rx_stats(9), ice_update_vsi_tx_ring_stats(9), ice_update_vsi_rx_ring_stats(9), ice_update_vsi_ring_stats(9), ice_update_vsi_stats(9), ice_update_pf_stats(9), ice_get_stats64(9), ice_napi_disable_all(9), ice_vsi_dis_irq(9), ice_down(9), ice_down_up(9), ice_vsi_setup_tx_rings(9), ice_vsi_setup_rx_rings(9), ice_vsi_open_ctrl(9), ice_vsi_open(9), ice_vsi_release_all(9), ice_vsi_rebuild_by_type(9), ice_update_pf_netdev_link(9), ice_rebuild(9), ice_change_mtu(9), ice_set_rss_lut(9), ice_set_rss_key(9), ice_get_rss_lut(9), ice_get_rss_key(9), ice_get_rss(9), ice_set_rss_hfunc(9), ice_bridge_getlink(9), ice_vsi_update_bridge_mode(9), ice_bridge_setlink(9), ice_tx_timeout(9), ice_setup_tc_cls_flower(9), ice_setup_tc_block_cb_ingress(9), ice_setup_tc_block_cb_egress(9), ice_validate_mqprio_qopt(9), ice_add_vsi_to_fdir(9), ice_add_channel(9), ice_chnl_cfg_res(9), ice_cfg_chnl_all_res(9), ice_setup_hw_channel(9), ice_setup_channel(9), ice_set_bw_limit(9), ice_create_q_channel(9), ice_rem_all_chnl_fltrs(9), ice_remove_q_channels(9), ice_rebuild_channels(9), ice_create_q_channels(9), ice_setup_tc_mqprio_qdisc(9), ice_cfg_txtime(9), ice_offload_txtime(9), ice_open(9), ice_open_internal(9), ice_stop(9), ice_features_check(9)

like… the way she's connected to literally the entire driver. networking queen behavior, no cap. 👑

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mwah 💋 that's the page, babes. this little icon comes straight out of the source tree at ./drivers/net/ethernet/intel/ice, dated October 2026, and before you ask — yes, ice_verify_cacheline_size(9) really is the name, it's not a typo, she's just built like that. 🌟