STRUCT LEAPRAID_SGE_CHAIN_UNION(9)

💅 NAME 💅

struct leapraid_sge_chain_union — the chained scatter-gather entry, bestie. That's it, that's the whole vibe. (This is from the Kernel API Manual, iykyk, so grab a snack and let's go 🍓)

✨ SYNOPSIS ✨

Okay so here's the actual shape of it, and no I did not touch a single character, look:

struct leapraid_sge_chain_union {
    __le16 len;
    u8 next_chain_offset;
    u8 flg;
    union {
      __le32 addr32;
      __le64 addr64;
    } u;
 };

Like, she's giving organized. She's giving struct. 🎀

🦋 Members 🦋

• len — the length of the chain descriptor. That's her whole measurement era, we respect it. 💖
• next_chain_offset — the offset pointing at the next SGE chain. She literally knows where the next one is. main character energy, no cap. ✨
• flg — flags that tell you about the chain's or the termination's properties. the little labels on the vibe check 🏷️
• u.addr32 — a 32-bit physical address. smol but mighty 🫶
• u.addr64 — a 64-bit physical address. big address energy 👑

ngl the u union means it's one or the other, not both — pick your fighter and commit 💀

🌈 SEE ALSO 🌈

okay this next part is a lot — it's the entire extended friend group and we are NOT leaving anyone out, periodt. also shoutout to the kernel file ./drivers/scsi/leapraid/leapraid.h, the home base of all of these 🏠

• struct leapraid_reg_base(9)
• struct leapraid_atomic_req_desc(9)
• union leapraid_rep_desc_union(9)
• struct leapraid_req(9)
• struct leapraid_rep(9)
• struct leapraid_sge_simple32(9)
• struct leapraid_sge_simple64(9)
• struct leapraid_sge_simple_union(9)
• struct leapraid_ieee_sge_simple32(9)
• struct leapraid_ieee_sge_simple64(9)
• union leapraid_ieee_sge_simple_union(9)
• union leapraid_ieee_sge_chain_union(9)
• struct leapraid_chain64_ieee_sg(9)
• union leapraid_ieee_sge_io_union(9)
• union leapraid_simple_sge_union(9)
• union leapraid_sge_io_union(9)
• struct leapraid_cfg_pg_header(9)
• struct leapraid_cfg_ext_pg_header(9)
• struct leapraid_cfg_req(9)
• struct leapraid_cfg_rep(9)
• struct leapraid_boot_dev_format_sas_wwid(9)
• struct leapraid_boot_dev_format_enc_slot(9)
• struct leapraid_boot_dev_format_dev_name(9)
• union leapraid_boot_dev_format(9)
• struct leapraid_manufacturing_p0(9)
• struct leapraid_bios_page2(9)
• struct leapraid_bios_page3(9)
• struct leapraid_raidvol0_phys_disk(9)
• struct leapraid_raidvol_p0(9)
• struct leapraid_raidvol_p1(9)
• struct leapraid_raidpd_p0(9)
• struct leapraid_sas_io_unit0_phy_info(9)
• struct leapraid_sas_io_unit_p0(9)
• struct leapraid_exp_p0(9)
• struct leapraid_exp_p1(9)
• struct leapraid_sas_dev_p0(9)
• struct leapraid_sas_phy_p0(9)
• struct leapraid_enc_p0(9)
• struct leapraid_raid_cfg_p0_element(9)
• struct leapraid_raid_cfg_p0(9)
• union leapraid_mpi_scsi_io_cdb_union(9)
• struct leapraid_mpi_scsiio_req(9)
• union leapraid_scsi_io_cdb_union(9)
• struct leapraid_scsiio_req(9)
• struct leapraid_scsiio_rep(9)
• struct leapraid_scsi_tm_req(9)
• struct leapraid_scsi_tm_rep(9)
• struct leapraid_sep_req(9)
• struct leapraid_sep_rep(9)
• struct leapraid_adapter_init_req(9)
• struct leapraid_rep_desc_q_arr(9)
• struct leapraid_adapter_init_rep(9)
• struct leapraid_adapter_log_req(9)
• struct leapraid_adapter_log_rep(9)
• struct leapraid_adapter_features_req(9)
• struct leapraid_adapter_features_rep(9)
• struct leapraid_scan_dev_req(9)
• struct leapraid_scan_dev_rep(9)
• struct leapraid_evt_notify_req(9)
• struct leapraid_evt_notify_rep(9)
• struct leapraid_evt_data_sas_dev_status_change(9)
• struct leapraid_evt_data_ir_change(9)
• struct leapraid_evt_data_sas_disc(9)
• struct leapraid_evt_sas_topo_phy_entry(9)
• struct leapraid_evt_data_sas_topo_change_list(9)
• struct leapraid_evt_data_sas_enc_dev_status_change(9)
• struct leapraid_io_unit_ctrl_req(9)
• struct leapraid_io_unit_ctrl_rep(9)
• struct leapraid_raid_act_req(9)
• struct leapraid_raid_act_rep(9)
• struct leapraid_smp_passthrough_req(9)
• struct leapraid_smp_passthrough_rep(9)
• struct leapraid_sas_io_unit_ctrl_req(9)

like. seventy-something entries. all iconic, all accounted for, not one dropped. that's the whole roster 👑🔥

anyway that's the page bestie, go read the whole family, they all live over in ./drivers/scsi/leapraid and this one's dated October 2026 — mwah, love u, bye 💜🧚