lpfc_sli4_mbox_rsrc_extent(9)

okay so bestie, this is the Kernel API Manual entry for lpfc_sli4_mbox_rsrc_extent(9) — and yes, we're getting into mailbox resource extent init realness 💅✨

🎀 NAME 🎀

lpfc_sli4_mbox_rsrc_extent — Initialize the opcode resource extent.

✨ SYNOPSIS ✨

int lpfc_sli4_mbox_rsrc_extent (struct lpfc_hba *phba , struct lpfcMboxq
       *mbox , uint16_t exts_count , uint16_t rsrc_type , bool emb );

🦋 ARGUMENTS 🦋

• phba — pointer to lpfc hba data structure. literally the hba bestie.
• mbox — pointer to an allocated lpfc mbox resource. it's giving "please bring a real mailbox, not a vibe."
• exts_count — the number of extents, if required, to allocate. okay so only if you need 'em.
• rsrc_type — the resource extent type. the whole personality of the extent, basically.
• emb — true if LPFC_SLI4_MBX_EMBED. false if LPFC_SLI4_MBX_NEMBED. no cap, those are the two options.

🌸 DESCRIPTION 🌸

This routine completes the subcommand header for SLI4 resource extent mailbox commands. it's the little header-finishing moment, and it is called after lpfc_sli4_config. periodt.

The caller must pass an allocated mailbox and the attributes required to initialize the mailbox correctly. like, actually pass them. do not ghost the mailbox with missing attributes, bestie 😭

💖 RETURN 💖

returns the actual length of the mbox command allocated. that's the whole return vibe.

👑 SEE ALSO 👑

The kernel file is ./drivers/scsi/lpfc/lpfc_mbox.c, and the whole SEE ALSO squad is right here:

• lpfc_mbox_rsrc_prep(9), lpfc_mbox_rsrc_cleanup(9), lpfc_dump_static_vport(9), lpfc_down_link(9), lpfc_dump_mem(9), lpfc_dump_wakeup_param(9), lpfc_read_nv(9), lpfc_config_async(9), lpfc_heart_beat(9), lpfc_read_topology(9), lpfc_clear_la(9), lpfc_config_link(9), lpfc_config_msi(9), lpfc_init_link(9)
• lpfc_read_sparam(9), lpfc_unreg_did(9), lpfc_read_config(9), lpfc_read_lnk_stat(9), lpfc_reg_rpi(9), lpfc_unreg_login(9), lpfc_sli4_unreg_all_rpis(9), lpfc_reg_vpi(9), lpfc_unreg_vpi(9), lpfc_config_pcb_setup(9), lpfc_read_rev(9), lpfc_build_hbq_profile2(9), lpfc_build_hbq_profile3(9), lpfc_build_hbq_profile5(9)
• lpfc_config_hbq(9), lpfc_config_ring(9), lpfc_config_port(9), lpfc_kill_board(9), lpfc_mbox_put(9), lpfc_mbox_get(9), __lpfc_mbox_cmpl_put(9), lpfc_mbox_cmpl_put(9), lpfc_mbox_cmd_check(9), lpfc_mbox_dev_check(9), lpfc_mbox_tmo_val(9), lpfc_sli4_mbx_sge_set(9), lpfc_sli4_mbx_sge_get(9)
• lpfc_sli4_mbox_cmd_free(9), lpfc_sli4_config(9), lpfc_sli_config_mbox_subsys_get(9), lpfc_sli_config_mbox_opcode_get(9), lpfc_sli4_mbx_read_fcf_rec(9), lpfc_request_features(9), lpfc_init_vfi(9), lpfc_reg_vfi(9), lpfc_init_vpi(9), lpfc_unreg_vfi(9), lpfc_sli4_dump_cfg_rg23(9), lpfc_reg_fcfi(9), lpfc_reg_fcfi_mrq(9), lpfc_unreg_fcfi(9), lpfc_resume_rpi(9)

okay bye bestie 💜 this cutie page comes from the source path ./drivers/scsi/lpfc, dated October 2026, and it's the lpfc_sli4_mbox_rsrc_extent(9) manual page era — mwah 🫶✨