Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 293 insertions, 0 deletions

diff --git a/drivers/scsi/lpfc/lpfc_disc.h b/drivers/scsi/lpfc/lpfc_disc.h
new file mode 100644
index 0000000000..f82615d87c
--- /dev/null
+++ b/drivers/scsi/lpfc/lpfc_disc.h
@@ -0,0 +1,293 @@
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for         *
+ * Fibre Channel Host Bus Adapters.                                *
+ * Copyright (C) 2017-2022 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.
+ */
+
+/* worker thread events */
+enum lpfc_work_type {
+	LPFC_EVT_ONLINE,
+	LPFC_EVT_OFFLINE_PREP,
+	LPFC_EVT_OFFLINE,
+	LPFC_EVT_WARM_START,
+	LPFC_EVT_KILL,
+	LPFC_EVT_ELS_RETRY,
+	LPFC_EVT_DEV_LOSS,
+	LPFC_EVT_FASTPATH_MGMT_EVT,
+	LPFC_EVT_RESET_HBA,
+	LPFC_EVT_RECOVER_PORT
+};
+
+/* structure used to queue event to the discovery tasklet */
+struct lpfc_work_evt {
+	struct list_head      evt_listp;
+	void                 *evt_arg1;
+	void                 *evt_arg2;
+	enum lpfc_work_type   evt;
+};
+
+struct lpfc_scsi_check_condition_event;
+struct lpfc_scsi_varqueuedepth_event;
+struct lpfc_scsi_event_header;
+struct lpfc_fabric_event_header;
+struct lpfc_fcprdchkerr_event;
+
+/* structure used for sending events from fast path */
+struct lpfc_fast_path_event {
+	struct lpfc_work_evt work_evt;
+	struct lpfc_vport     *vport;
+	union {
+		struct lpfc_scsi_check_condition_event check_cond_evt;
+		struct lpfc_scsi_varqueuedepth_event queue_depth_evt;
+		struct lpfc_scsi_event_header scsi_evt;
+		struct lpfc_fabric_event_header fabric_evt;
+		struct lpfc_fcprdchkerr_event read_check_error;
+	} un;
+};
+
+#define LPFC_SLI4_MAX_XRI	1024	/* Used to make the ndlp's xri_bitmap */
+#define XRI_BITMAP_ULONGS (LPFC_SLI4_MAX_XRI / BITS_PER_LONG)
+struct lpfc_node_rrqs {
+	unsigned long xri_bitmap[XRI_BITMAP_ULONGS];
+};
+
+enum lpfc_fc4_xpt_flags {
+	NLP_XPT_REGD		= 0x1,
+	SCSI_XPT_REGD		= 0x2,
+	NVME_XPT_REGD		= 0x4,
+	NVME_XPT_UNREG_WAIT	= 0x8,
+	NLP_XPT_HAS_HH		= 0x10
+};
+
+enum lpfc_nlp_save_flags {
+	/* devloss occurred during recovery */
+	NLP_IN_RECOV_POST_DEV_LOSS	= 0x1,
+	/* wait for outstanding LOGO to cmpl */
+	NLP_WAIT_FOR_LOGO		= 0x2,
+};
+
+struct lpfc_nodelist {
+	struct list_head nlp_listp;
+	struct serv_parm fc_sparam;		/* buffer for service params */
+	struct lpfc_name nlp_portname;
+	struct lpfc_name nlp_nodename;
+
+	spinlock_t	lock;			/* Node management lock */
+
+	uint32_t         nlp_flag;		/* entry flags */
+	uint32_t         nlp_DID;		/* FC D_ID of entry */
+	uint32_t         nlp_last_elscmd;	/* Last ELS cmd sent */
+	uint16_t         nlp_type;
+#define NLP_FC_NODE        0x1			/* entry is an FC node */
+#define NLP_FABRIC         0x4			/* entry rep a Fabric entity */
+#define NLP_FCP_TARGET     0x8			/* entry is an FCP target */
+#define NLP_FCP_INITIATOR  0x10			/* entry is an FCP Initiator */
+#define NLP_NVME_TARGET    0x20			/* entry is a NVME Target */
+#define NLP_NVME_INITIATOR 0x40			/* entry is a NVME Initiator */
+#define NLP_NVME_DISCOVERY 0x80                 /* entry has NVME disc srvc */
+
+	uint16_t	nlp_fc4_type;		/* FC types node supports. */
+						/* Assigned from GID_FF, only
+						 * FCP (0x8) and NVME (0x28)
+						 * supported.
+						 */
+#define NLP_FC4_NONE	0x0
+#define NLP_FC4_FCP	0x1			/* FC4 Type FCP (value x8)) */
+#define NLP_FC4_NVME	0x2			/* FC4 TYPE NVME (value x28) */
+
+	uint16_t        nlp_rpi;
+	uint16_t        nlp_state;		/* state transition indicator */
+	uint16_t        nlp_prev_state;		/* state transition indicator */
+	uint16_t        nlp_xri;		/* output exchange id for RPI */
+	uint16_t        nlp_sid;		/* scsi id */
+#define NLP_NO_SID		0xffff
+	uint16_t	nlp_maxframe;		/* Max RCV frame size */
+	uint8_t		nlp_class_sup;		/* Supported Classes */
+	uint8_t         nlp_retry;		/* used for ELS retries */
+	uint8_t         nlp_fcp_info;	        /* class info, bits 0-3 */
+#define NLP_FCP_2_DEVICE   0x10			/* FCP-2 device */
+	u8		nlp_nvme_info;	        /* NVME NSLER Support */
+	uint8_t		vmid_support;		/* destination VMID support */
+#define NLP_NVME_NSLER     0x1			/* NVME NSLER device */
+
+	struct timer_list   nlp_delayfunc;	/* Used for delayed ELS cmds */
+	struct lpfc_hba *phba;
+	struct fc_rport *rport;		/* scsi_transport_fc port structure */
+	struct lpfc_nvme_rport *nrport;	/* nvme transport rport struct. */
+	struct lpfc_vport *vport;
+	struct lpfc_work_evt els_retry_evt;
+	struct lpfc_work_evt dev_loss_evt;
+	struct lpfc_work_evt recovery_evt;
+	struct kref     kref;
+	atomic_t cmd_pending;
+	uint32_t cmd_qdepth;
+	unsigned long last_change_time;
+	unsigned long *active_rrqs_xri_bitmap;
+	uint32_t fc4_prli_sent;
+
+	/* flags to keep ndlp alive until special conditions are met */
+	enum lpfc_nlp_save_flags save_flags;
+
+	enum lpfc_fc4_xpt_flags fc4_xpt_flags;
+
+	uint32_t nvme_fb_size; /* NVME target's supported byte cnt */
+#define NVME_FB_BIT_SHIFT 9    /* PRLI Rsp first burst in 512B units. */
+	uint32_t nlp_defer_did;
+	wait_queue_head_t *logo_waitq;
+};
+
+struct lpfc_node_rrq {
+	struct list_head list;
+	uint16_t xritag;
+	uint16_t send_rrq;
+	uint16_t rxid;
+	uint32_t         nlp_DID;		/* FC D_ID of entry */
+	struct lpfc_vport *vport;
+	unsigned long rrq_stop_time;
+};
+
+#define lpfc_ndlp_check_qdepth(phba, ndlp) \
+	(ndlp->cmd_qdepth < phba->sli4_hba.max_cfg_param.max_xri)
+
+/* Defines for nlp_flag (uint32) */
+#define NLP_IGNR_REG_CMPL  0x00000001 /* Rcvd rscn before we cmpl reg login */
+#define NLP_REG_LOGIN_SEND 0x00000002   /* sent reglogin to adapter */
+#define NLP_RELEASE_RPI    0x00000004   /* Release RPI to free pool */
+#define NLP_SUPPRESS_RSP   0x00000010	/* Remote NPort supports suppress rsp */
+#define NLP_PLOGI_SND      0x00000020	/* sent PLOGI request for this entry */
+#define NLP_PRLI_SND       0x00000040	/* sent PRLI request for this entry */
+#define NLP_ADISC_SND      0x00000080	/* sent ADISC request for this entry */
+#define NLP_LOGO_SND       0x00000100	/* sent LOGO request for this entry */
+#define NLP_RNID_SND       0x00000400	/* sent RNID request for this entry */
+#define NLP_ELS_SND_MASK   0x000007e0	/* sent ELS request for this entry */
+#define NLP_NVMET_RECOV    0x00001000   /* NVMET auditing node for recovery. */
+#define NLP_UNREG_INP      0x00008000	/* UNREG_RPI cmd is in progress */
+#define NLP_DROPPED        0x00010000	/* Init ref count has been dropped */
+#define NLP_DELAY_TMO      0x00020000	/* delay timeout is running for node */
+#define NLP_NPR_2B_DISC    0x00040000	/* node is included in num_disc_nodes */
+#define NLP_RCV_PLOGI      0x00080000	/* Rcv'ed PLOGI from remote system */
+#define NLP_LOGO_ACC       0x00100000	/* Process LOGO after ACC completes */
+#define NLP_TGT_NO_SCSIID  0x00200000	/* good PRLI but no binding for scsid */
+#define NLP_ISSUE_LOGO     0x00400000	/* waiting to issue a LOGO */
+#define NLP_IN_DEV_LOSS    0x00800000	/* devloss in progress */
+#define NLP_ACC_REGLOGIN   0x01000000	/* Issue Reg Login after successful
+					   ACC */
+#define NLP_NPR_ADISC      0x02000000	/* Issue ADISC when dq'ed from
+					   NPR list */
+#define NLP_RM_DFLT_RPI    0x04000000	/* need to remove leftover dflt RPI */
+#define NLP_NODEV_REMOVE   0x08000000	/* Defer removal till discovery ends */
+#define NLP_TARGET_REMOVE  0x10000000   /* Target remove in process */
+#define NLP_SC_REQ         0x20000000	/* Target requires authentication */
+#define NLP_FIRSTBURST     0x40000000	/* Target supports FirstBurst */
+#define NLP_RPI_REGISTERED 0x80000000	/* 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