hw_block_intr(9)

🎀 NAME 🎀

hw_block_intr — block hardware interrupts.

okay so bestie, this is hw_block_intr(9) from the Kernel API Manual, and it is literally the function that hits pause on all the hardware interrupts and hands you back the mask so everything can be put back later. iconic behavior, honestly 💅✨

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✨ SYNOPSIS ✨

uint hw_block_intr (struct ksz_hw *hw );

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🧚 ARGUMENTS 🧚

• hw — the hardware instance. that's the whole argument, no cap 🫶

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💖 DESCRIPTION 💖

so what does it do? it blocks all interrupts of the hardware and returns the current interrupt enable mask so that interrupts can be restored later. that's the vibe, that's the plot 😭✨

and the return value? the current interrupt enable mask. literally hands you the mask back so future-you can restore everything. periodt 💅

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🌸 SEE ALSO 🌸

the whole extended crew, fr fr — every single one of these is invited to the group chat 👑:

Kernel file ./drivers/net/ethernet/micrel/ksz884x.c struct
ksz_hw_desc(9), struct ksz_sw_desc(9), struct ksz_dma_buf(9), struct
ksz_desc(9), struct ksz_desc_info(9), struct ksz_mac_table(9), struct
ksz_vlan_table(9), struct ksz_port_mib(9), struct ksz_port_cfg(9),
struct ksz_switch(9), struct ksz_port_info(9), struct ksz_hw(9), struct
ksz_port(9), struct ksz_timer_info(9), struct ksz_shared_mem(9), struct
ksz_counter_info(9), struct dev_info(9), struct dev_priv(9),
hw_turn_on_intr(9), sw_r_table(9), sw_w_table_64(9),
sw_w_sta_mac_table(9), sw_r_vlan_table(9), port_r_mib_cnt(9),
port_r_mib_pkt(9), port_r_cnt(9), port_init_cnt(9), port_cfg(9),
port_r8(9), port_r16(9), port_w16(9), sw_chk(9), sw_cfg(9),
sw_cfg_broad_storm(9), sw_get_broad_storm(9), sw_dis_broad_storm(9),
sw_ena_broad_storm(9), sw_init_broad_storm(9), hw_cfg_broad_storm(9),
sw_dis_prio_rate(9), sw_init_prio_rate(9), sw_dis_diffserv(9),
sw_dis_802_1p(9), sw_cfg_replace_null_vid(9), sw_cfg_replace_vid(9),
sw_cfg_port_based(9), sw_dis_multi_queue(9), sw_init_prio(9),
port_get_def_vid(9), sw_init_vlan(9), sw_cfg_port_base_vlan(9),
sw_set_addr(9), sw_set_global_ctrl(9), port_set_stp_state(9),
sw_clr_sta_mac_table(9), sw_init_stp(9), sw_block_addr(9), hw_r_phy(9),
hw_w_phy(9), eeprom_read(9), eeprom_write(9), port_get_link_speed(9),
port_set_link_speed(9), port_force_link_speed(9),
hw_chk_wol_pme_status(9), hw_clr_wol_pme_status(9), hw_cfg_wol_pme(9),
hw_cfg_wol(9), hw_set_wol_frame(9), hw_add_wol_arp(9),
hw_add_wol_bcast(9), hw_add_wol_mcast(9), hw_add_wol_ucast(9),
hw_enable_wol(9), hw_init(9), hw_reset(9), hw_setup(9),
hw_setup_intr(9), hw_set_desc_base(9), hw_start_rx(9), hw_stop_rx(9),
hw_start_tx(9), hw_stop_tx(9), hw_disable(9), hw_enable(9),
hw_alloc_pkt(9), hw_send_pkt(9), hw_set_addr(9), hw_read_addr(9),
hw_clr_multicast(9), hw_set_grp_addr(9), hw_set_multicast(9),
hw_set_promiscuous(9), sw_enable(9), sw_setup(9), ksz_start_timer(9),
ksz_stop_timer(9), ksz_alloc_soft_desc(9), ksz_alloc_desc(9),
free_dma_buf(9), ksz_init_rx_buffers(9), ksz_alloc_mem(9),
ksz_free_desc(9), ksz_free_buffers(9), ksz_free_mem(9), send_packet(9),
transmit_cleanup(9), tx_done(9), netdev_tx(9), netdev_tx_timeout(9),
netdev_intr(9), netdev_close(9), netdev_open(9),
netdev_query_statistics(9), netdev_set_mac_address(9),
netdev_set_rx_mode(9), netdev_ioctl(9), mdio_read(9), mdio_write(9),
netdev_get_link_ksettings(9), netdev_set_link_ksettings(9),
netdev_nway_reset(9), netdev_get_link(9), netdev_get_drvinfo(9),
netdev_get_regs_len(9), netdev_get_regs(9), netdev_get_wol(9),
netdev_set_wol(9), netdev_get_msglevel(9), netdev_set_msglevel(9),
netdev_get_eeprom_len(9), netdev_get_eeprom(9), netdev_set_eeprom(9),
netdev_get_pauseparam(9), netdev_set_pauseparam(9),
netdev_get_ringparam(9), netdev_get_strings(9),
netdev_get_sset_count(9), netdev_get_ethtool_stats(9),
netdev_set_features(9), dev_monitor(9), netdev_init(9)

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that's the whole page, bestie 🫶 this little beauty comes from source/version ./drivers/net/ethernet/micrel, dated October 2026, and it's serving hw_block_intr(9) energy till the end. bye! 🌈💜