STRUCT DIAG_BUFFER_DESC(9)

💅 struct diag_buffer_desc(9) 💅

okay so bestie, welcome to the Kernel API Manual page for struct diag_buffer_desc — it’s giving “tiny struct, very important diagnostic-buffer business” energy ✨ This thing is a memory descriptor structure, and it stores virtual addresses, dma addresses, size, and buffer status for host diagnostic buffers. no cap, that’s the whole vibe 🫶

💖 NAME 💖

struct diag_buffer_desc — memory descriptor structure to store virtual, dma addresses, size, buffer status for host diagnostic buffers.

✨ SYNOPSIS ✨

       struct diag_buffer_desc {
           u8 type;
           union mpi3mr_trigger_data trigger_data;
           u8 trigger_type;
           u8 status;
           u32 size;
           void *addr;
           dma_addr_t dma_addr;
           bool is_segmented;
           bool disabled_after_reset;
        };

🫶 Members 🫶

• type — Buffer type. yes bestie, it’s literally the type 💅
• trigger_data — Trigger data.
• trigger_type — Trigger type.
• status — Buffer status.
• size — Buffer size.
• addr — Virtual address.
• dma_addr — Buffer DMA address.
• is_segmented — The buffer is segmented or not.
• disabled_after_reset — The buffer is disabled after reset.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/mpi3mr/mpi3mr.h
• struct mpi3mr_nvme_pt_sge(9)
• struct mpi3mr_buf_map(9)
• struct mpi3mr_compimg_ver(9)
• struct segments(9)
• struct op_req_qinfo(9)
• struct op_reply_qinfo(9)
• struct mpi3mr_intr_info(9)
• struct mpi3mr_throttle_group_info(9)
• struct mpi3mr_hba_port(9)
• struct mpi3mr_sas_port(9)
• struct mpi3mr_sas_phy(9)
• struct mpi3mr_sas_node(9)
• struct mpi3mr_enclosure_node(9)
• struct tgt_dev_sas_sata(9)
• struct tgt_dev_pcie(9)
• struct tgt_dev_vd(9)
• union _form_spec_inf(9)
• struct mpi3mr_tgt_dev(9)
• mpi3mr_tgtdev_get(9)
• mpi3mr_free_tgtdev(9)
• mpi3mr_tgtdev_put(9)
• struct mpi3mr_stgt_priv_data(9)
• struct mpi3mr_drv_cmd(9)
• union mpi3mr_trigger_data(9)
• struct trigger_event_data(9)
• struct dma_memory_desc(9)
• struct chain_element(9)
• struct scmd_priv(9)
• struct mpi3mr_ioc(9)
• struct mpi3mr_fwevt(9)
• struct delayed_dev_rmhs_node(9)
• struct delayed_evt_ack_node(9)

that’s the whole page, bestie — source/version ./drivers/scsi/mpi3mr, date October 2026 💖🎀