STRUCT KSZ_DESC_INFO(9)

✨ NAME ✨

struct ksz_desc_info — descriptor information data structure 💅

okay so this is the struct ksz_desc_info(9) page, straight out of the Kernel API Manual, and it's literally the lil bookkeeping hub for a descriptor ring. no cap, it's giving "the group chat roster of your NIC's descriptors" 🎀

🌸 SYNOPSIS 🌸

struct ksz_desc_info {
    struct ksz_desc *ring;
    struct ksz_desc *cur;
    struct ksz_hw_desc *ring_virt;
    u32 ring_phys;
    int size;
    int alloc;
    int avail;
    int last;
    int next;
    int mask;
 };

💅 Members 💅

bestie, here's the whole cast, each one doing its own iconic thing:

• ring — first descriptor in the ring. main character energy, fr fr.
• cur — the current descriptor being manipulated. that's the one getting attention right now 👑
• ring_virt — the first hardware descriptor in the ring. yes it's a different one from ring, don't come for me 💀
• ring_phys — the physical address of the first descriptor of the ring. hardware's actual mailing address 📬
• size — size of the hardware descriptor.
• alloc — number of descriptors allocated. how many got invited to the party 🎉
• avail — number of descriptors available for use. how many actually showed up 🫶
• last — index for the last descriptor released to hardware.
• next — index for the next descriptor available for use. it's next, literally 💫
• mask — mask for index wrapping. keeps the indexes cute and circular so nothing falls off the edge 🌈

🦋 SEE ALSO 🦋

so. many. friends. the whole kernel file ./drivers/net/ethernet/micrel/ksz884x.c is in here, and every one of these is linked in the original — all of them, no gatekeeping:

struct ksz_hw_desc(9), struct ksz_sw_desc(9), struct ksz_dma_buf(9), struct ksz_desc(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), hw_block_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)

like, that's the whole roster. iykyk 😭🔥

and that's the page, bestie! this one came from the source path ./drivers/net/ethernet/micrel and it's dated October 2026 — so yeah, very demure, very future-forward 📅✨ catch u in the next manpage, muah 🫶💖