lpfc_clear_la(9)

💅 lpfc_clear_la(9) — like, the Kernel API Manual one, obvi

okay bestie so this is a page from the Kernel API Manual and it's about lpfc_clear_la, which honestly sounds like a skincare routine but is actually a function. let's get into it ✨

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🎀 NAME 🎀

lpfc_clear_la — prepare a mailbox command for clearing HBA link attention

like, you're prepping the mailbox command. the actual clearing happens... elsewhere. this is the prep. main character energy is doing the setup and letting the command take the stage 💅

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🌸 SYNOPSIS 🌸

void lpfc_clear_la (struct lpfc_hba * phba , LPFC_MBOXQ_t * pmb );

returns void, takes two args, no drama, no return value, she simply does 😌

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🦋 ARGUMENTS 🦋

• phba — pointer to lpfc hba data structure. like, the hba's whole vibe in one struct 🫶
• pmb — pointer to the driver internal queue element for mailbox command. this is the little envelope the command gets mailed in ✉️

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💖 DESCRIPTION 💖

okay so here's the lore. the clear link attention mailbox command gets issued to clear the link event attention condition — and that condition is the one indicated by the Link Event bit of the Host Attention (HSTATT) register. yes, the register is literally called HSTATT. iconic name, no notes 👑

here's the catch bestie, and don't skip this part: the link event attention condition gets cleared only if the event tag specified matches that of the current link event counter. so if your tag doesn't match? nothing. cleared? no ma'am. 💀

and where do you get the current event tag from? you read it using the read link attention event mailbox command. that's the whole vibe check — read it first, then clear it. iykyk 🌈

so what does this routine actually do? simple: it prepares the mailbox command for clearing HBA link attention information. that's it. that's the function. she's a preparer, not a doer, and we respect her for it 🎀✨

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⭐ SEE ALSO ⭐

literally the whole friend group, no cap — kernel file ./drivers/scsi/lpfc/lpfc_mbox.c plus:

• 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_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_sli4_mbox_rsrc_extent(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)

that's fifty-something functions and yes i counted the vibe, not the list 😭 go read them, they ate 💜

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ngl there are no options, no flags, no exit statuses, no environment variables and no bug notes on this page. just two pointers and a mailbox command living her best life. don't @ me 🍓

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and that's the whole page bestie!! this came out of ./drivers/scsi/lpfc and it's dated October 2026 — yes, the future, she's ahead of her time 💫 so when you're citing it, it's lpfc_clear_la(9), manual section 9, kernel API vibes only. bye luv u, go clear that link attention 🧚‍♀️💖