/******************************************************************* * This file is part of the Emulex Linux Device Driver for * * Fibre Channel Host Bus Adapters. * * Copyright (C) 2017-2024 Broadcom. All Rights Reserved. The term * * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * * Copyright (C) 2004-2013 Emulex. All rights reserved. * * EMULEX and SLI are trademarks of Emulex. * * www.broadcom.com * * * * This program is free software; you can redistribute it and/or * * modify it under the terms of version 2 of the GNU General * * Public License as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful. * * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * * TO BE LEGALLY INVALID. See the GNU General Public License for * * more details, a copy of which can be found in the file COPYING * * included with this package. *
*******************************************************************/
#define FC_MAX_HOLD_RSCN 32 /* max number of deferred RSCNs */ #define FC_MAX_NS_RSP 64512 /* max size NameServer rsp */ #define FC_MAXLOOP 126 /* max devices supported on a fc loop */ #define LPFC_DISC_FLOGI_TMO 10 /* Discovery FLOGI ratov */
/* This is the protocol dependent definition for a Node List Entry. * This is used by Fibre Channel protocol to support FCP.
*/
/* nlp_flag mask bits */ enum lpfc_nlp_flag {
NLP_IGNR_REG_CMPL = 0, /* Rcvd rscn before we cmpl reg login */
NLP_REG_LOGIN_SEND = 1, /* sent reglogin to adapter */
NLP_SUPPRESS_RSP = 4, /* Remote NPort supports suppress rsp */
NLP_PLOGI_SND = 5, /* sent PLOGI request for this entry */
NLP_PRLI_SND = 6, /* sent PRLI request for this entry */
NLP_ADISC_SND = 7, /* sent ADISC request for this entry */
NLP_LOGO_SND = 8, /* sent LOGO request for this entry */
NLP_RNID_SND = 10, /* sent RNID request for this entry */
NLP_NVMET_RECOV = 12, /* NVMET auditing node for recovery. */
NLP_UNREG_INP = 15, /* UNREG_RPI cmd is in progress */
NLP_DROPPED = 16, /* Init ref count has been dropped */
NLP_DELAY_TMO = 17, /* delay timeout is running for node */
NLP_NPR_2B_DISC = 18, /* node is included in num_disc_nodes */
NLP_RCV_PLOGI = 19, /* Rcv'ed PLOGI from remote system */
NLP_LOGO_ACC = 20, /* Process LOGO after ACC completes */
NLP_TGT_NO_SCSIID = 21, /* good PRLI but no binding for scsid */
NLP_ISSUE_LOGO = 22, /* waiting to issue a LOGO */
NLP_IN_DEV_LOSS = 23, /* devloss in progress */
NLP_ACC_REGLOGIN = 24, /* Issue Reg Login after successful
ACC */
NLP_NPR_ADISC = 25, /* Issue ADISC when dq'ed from
NPR list */
NLP_RM_DFLT_RPI = 26, /* need to remove leftover dflt RPI */
NLP_NODEV_REMOVE = 27, /* Defer removal till discovery ends */
NLP_SC_REQ = 29, /* Target requires authentication */
NLP_FIRSTBURST = 30, /* Target supports FirstBurst */
NLP_RPI_REGISTERED = 31 /* nlp_rpi is valid */
};
/* There are 4 different double linked lists nodelist entries can reside on. * The Port Login (PLOGI) list and Address Discovery (ADISC) list are used * when Link Up discovery or Registered State Change Notification (RSCN) * processing is needed. Each list holds the nodes that require a PLOGI or * ADISC Extended Link Service (ELS) request. These lists keep track of the * nodes affected by an RSCN, or a Link Up (Typically, all nodes are effected * by Link Up) event. The unmapped_list contains all nodes that have * successfully logged into at the Fibre Channel level. The * mapped_list will contain all nodes that are mapped FCP targets. * * The bind list is a list of undiscovered (potentially non-existent) nodes * that we have saved binding information on. This information is used when * nodes transition from the unmapped to the mapped list.
*/
/* Defines for nlp_state */ #define NLP_STE_UNUSED_NODE 0x0 /* node is just allocated */ #define NLP_STE_PLOGI_ISSUE 0x1 /* PLOGI was sent to NL_PORT */ #define NLP_STE_ADISC_ISSUE 0x2 /* ADISC was sent to NL_PORT */ #define NLP_STE_REG_LOGIN_ISSUE 0x3 /* REG_LOGIN was issued for NL_PORT */ #define NLP_STE_PRLI_ISSUE 0x4 /* PRLI was sent to NL_PORT */ #define NLP_STE_LOGO_ISSUE 0x5 /* LOGO was sent to NL_PORT */ #define NLP_STE_UNMAPPED_NODE 0x6 /* PRLI completed from NL_PORT */ #define NLP_STE_MAPPED_NODE 0x7 /* Identified as a FCP Target */ #define NLP_STE_NPR_NODE 0x8 /* NPort disappeared */ #define NLP_STE_MAX_STATE 0x9 #define NLP_STE_FREED_NODE 0xff /* node entry was freed to MEM_NLP */
/* For UNUSED_NODE state, the node has just been allocated. * For PLOGI_ISSUE and REG_LOGIN_ISSUE, the node is on * the PLOGI list. For REG_LOGIN_COMPL, the node is taken off the PLOGI list * and put on the unmapped list. For ADISC processing, the node is taken off * the ADISC list and placed on either the mapped or unmapped list (depending * on its previous state). Once on the unmapped list, a PRLI is issued and the * state changed to PRLI_ISSUE. When the PRLI completion occurs, the state is * changed to PRLI_COMPL. If the completion indicates a mapped * node, the node is taken off the unmapped list. The binding list is checked * for a valid binding, or a binding is automatically assigned. If binding * assignment is unsuccessful, the node is left on the unmapped list. If * binding assignment is successful, the associated binding list entry (if * any) is removed, and the node is placed on the mapped list.
*/ /* * For a Link Down, all nodes on the ADISC, PLOGI, unmapped or mapped * lists will receive a DEVICE_RECOVERY event. If the linkdown or devloss timers * expire, all effected nodes will receive a DEVICE_RM event.
*/ /* * For a Link Up or RSCN, all nodes will move from the mapped / unmapped lists * to either the ADISC or PLOGI list. After a Nameserver query or ALPA loopmap * check, additional nodes may be added (DEVICE_ADD) or removed (DEVICE_RM) to / * from the PLOGI or ADISC lists. Once the PLOGI and ADISC lists are populated, * we will first process the ADISC list. 32 entries are processed initially and * ADISC is initited for each one. Completions / Events for each node are * funnelled thru the state machine. As each node finishes ADISC processing, it * starts ADISC for any nodes waiting for ADISC processing. If no nodes are * waiting, and the ADISC list count is identically 0, then we are done. For * Link Up discovery, since all nodes on the PLOGI list are UNREG_LOGIN'ed, we * can issue a CLEAR_LA and reenable Link Events. Next we will process the PLOGI * list. 32 entries are processed initially and PLOGI is initited for each one. * Completions / Events for each node are funnelled thru the state machine. As * each node finishes PLOGI processing, it starts PLOGI for any nodes waiting * for PLOGI processing. If no nodes are waiting, and the PLOGI list count is * identically 0, then we are done. We have now completed discovery / RSCN * handling. Upon completion, ALL nodes should be on either the mapped or * unmapped lists.
*/
/* Defines for Node List Entry Events that could happen */ #define NLP_EVT_RCV_PLOGI 0x0 /* Rcv'd an ELS PLOGI command */ #define NLP_EVT_RCV_PRLI 0x1 /* Rcv'd an ELS PRLI command */ #define NLP_EVT_RCV_LOGO 0x2 /* Rcv'd an ELS LOGO command */ #define NLP_EVT_RCV_ADISC 0x3 /* Rcv'd an ELS ADISC command */ #define NLP_EVT_RCV_PDISC 0x4 /* Rcv'd an ELS PDISC command */ #define NLP_EVT_RCV_PRLO 0x5 /* Rcv'd an ELS PRLO command */ #define NLP_EVT_CMPL_PLOGI 0x6 /* Sent an ELS PLOGI command */ #define NLP_EVT_CMPL_PRLI 0x7 /* Sent an ELS PRLI command */ #define NLP_EVT_CMPL_LOGO 0x8 /* Sent an ELS LOGO command */ #define NLP_EVT_CMPL_ADISC 0x9 /* Sent an ELS ADISC command */ #define NLP_EVT_CMPL_REG_LOGIN 0xa /* REG_LOGIN mbox cmd completed */ #define NLP_EVT_DEVICE_RM 0xb /* Device not found in NS / ALPAmap */ #define NLP_EVT_DEVICE_RECOVERY 0xc /* Device existence unknown */ #define NLP_EVT_MAX_EVENT 0xd #define NLP_EVT_NOTHING_PENDING 0xff
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