lpfc_els_rcv_fpin_cgn(9)

💅 lpfc_els_rcv_fpin_cgn — Kernel API Manual, bestie edition 💅

Okay so this page is literally called lpfc_els_rcv_fpin_cgn(9) and it's from the Kernel API Manual. It's giving "deep kernel lore" but I'm gonna break it down so it's actually slay. No cap, every detail is here. 🫶

✨ NAME ✨

lpfc_els_rcv_fpin_cgn — process an FPIN Congestion notification. That's it, that's the vibe. 💖

🌸 SYNOPSIS 🌸

int lpfc_els_rcv_fpin_cgn (struct lpfc_hba *phba , struct fc_tlv_desc
*tlv );

🎀 ARGUMENTS 🎀

• phba — pointer to the hba object. Like, the main character struct. 👑
• tlv — pointer to the Congestion Notification Descriptor TLV. It's the descriptor bestie. 🦋

💖 DESCRIPTION 💖

This function processes an FPIN Congestion Notifiction (yes, the manual spells it like that, and we respect the typo fr fr 😭). The notification could be an Alarm or a Warning. This routine feeds that data into the driver's running congestion algorithm. It also processes the FPIN by logging a message. It returns 1 to indicate "deliver this message to the upper layer" or 0 to indicate "don't deliver it." So it's basically the bouncer for congestion messages — very gatekeep, very girlboss. 💅

🔥 SEE ALSO 🔥

The kernel file is ./drivers/scsi/lpfc/lpfc_els.c, and then there's a whole friend group of functions: lpfc_els_chk_latt(9), lpfc_prep_els_iocb(9), lpfc_issue_fabric_reglogin(9), lpfc_issue_reg_vfi(9), lpfc_issue_unreg_vfi(9), lpfc_check_clean_addr_bit(9), lpfc_cmpl_els_flogi_fabric(9), lpfc_cmpl_els_flogi_nport(9), lpfc_cmpl_els_flogi(9), lpfc_cmpl_els_link_down(9), lpfc_issue_els_flogi(9), lpfc_els_abort_flogi(9), lpfc_initial_flogi(9), lpfc_initial_fdisc(9), lpfc_more_plogi(9), lpfc_plogi_confirm_nport(9), lpfc_end_rscn(9), lpfc_cmpl_els_rrq(9), lpfc_check_encryption(9), lpfc_cmpl_els_plogi(9), lpfc_issue_els_plogi(9), lpfc_cmpl_els_prli(9), lpfc_issue_els_prli(9), lpfc_rscn_disc(9), lpfc_adisc_done(9), lpfc_more_adisc(9), lpfc_cmpl_els_adisc(9), lpfc_issue_els_adisc(9), lpfc_cmpl_els_logo(9), lpfc_issue_els_logo(9), lpfc_cmpl_els_cmd(9), lpfc_reg_fab_ctrl_node(9), lpfc_cmpl_els_disc_cmd(9), lpfc_issue_els_scr(9), lpfc_issue_els_rscn(9), lpfc_issue_els_farpr(9), lpfc_issue_els_rdf(9), lpfc_least_capable_settings(9), lpfc_cmpl_els_edc(9), lpfc_cancel_retry_delay_tmo(9), lpfc_els_retry_delay(9), lpfc_els_retry_delay_handler(9), lpfc_link_reset(9), lpfc_els_retry(9), lpfc_els_free_data(9), lpfc_els_free_bpl(9), lpfc_els_free_iocb(9), lpfc_cmpl_els_logo_acc(9), lpfc_mbx_cmpl_dflt_rpi(9), lpfc_cmpl_els_rsp(9), lpfc_els_rsp_acc(9), lpfc_els_rsp_reject(9), lpfc_els_rsp_adisc_acc(9), lpfc_els_rsp_prli_acc(9), lpfc_els_rsp_rnid_acc(9), lpfc_els_clear_rrq(9), lpfc_els_rsp_echo_acc(9), lpfc_els_disc_adisc(9), lpfc_els_disc_plogi(9), lpfc_els_rcv_lcb(9), lpfc_els_flush_rscn(9), lpfc_rscn_payload_check(9), lpfc_rscn_recovery_check(9), lpfc_send_rscn_event(9), lpfc_els_rcv_rscn(9), lpfc_els_handle_rscn(9), lpfc_els_rcv_flogi(9), lpfc_els_rcv_rnid(9), lpfc_els_rcv_echo(9), lpfc_els_rcv_lirr(9), lpfc_els_rcv_rrq(9), lpfc_els_rsp_rls_acc(9), lpfc_els_rcv_rls(9), lpfc_els_rcv_rtv(9), lpfc_send_rrq(9), lpfc_els_rsp_rpl_acc(9), lpfc_els_rcv_rpl(9), lpfc_els_rcv_farp(9), lpfc_els_rcv_farpr(9), lpfc_els_rcv_fan(9), lpfc_els_rcv_edc(9), lpfc_els_timeout(9), lpfc_els_timeout_handler(9), lpfc_els_flush_cmd(9), lpfc_els_flush_all_cmd(9), lpfc_send_els_failure_event(9), lpfc_send_els_event(9), lpfc_display_fpin_wwpn(9), lpfc_els_rcv_fpin_li(9), lpfc_els_rcv_fpin_del(9), lpfc_els_rcv_fpin_peer_cgn(9), lpfc_els_unsol_buffer(9), lpfc_els_unsol_event(9), lpfc_do_scr_ns_plogi(9), lpfc_cmpl_reg_new_vport(9), lpfc_register_new_vport(9), lpfc_cancel_all_vport_retry_delay_timer(9), lpfc_retry_pport_discovery(9), lpfc_fabric_login_reqd(9), lpfc_cmpl_els_fdisc(9), lpfc_issue_els_fdisc(9), lpfc_cmpl_els_npiv_logo(9), lpfc_issue_els_npiv_logo(9), lpfc_fabric_block_timeout(9), lpfc_resume_fabric_iocbs(9), lpfc_unblock_fabric_iocbs(9), lpfc_block_fabric_iocbs(9), lpfc_cmpl_fabric_iocb(9), lpfc_issue_fabric_iocb(9), lpfc_fabric_abort_vport(9), lpfc_fabric_abort_nport(9), lpfc_fabric_abort_hba(9), lpfc_sli4_vport_delete_els_xri_aborted(9), lpfc_sli4_els_xri_aborted(9).

That's the whole page bestie. Catch you later — this gem is from source ./drivers/scsi/lpfc, dated October 2026, and it's lpfc_els_rcv_fpin_cgn(9) of the Kernel API Manual. Stay slay, stay congested (responsibly). 💅✨