[PATCH v3 09/31] elx: libefc: Emulex FC discovery library APIs and definitions

James Smart
2020-04-12T03:33:30Z

This patch continues the libefc library population.

This patch adds library interface definitions for:
- SLI/Local FC port objects
- efc_domain_s: FC domain (aka fabric) objects
- efc_node_s: FC node (aka remote ports) objects

Signed-off-by: Ram Vegesna <ram.vegesna@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>

---
v3:
Removed Sparse Vector APIs and structures.
---
drivers/scsi/elx/libefc/efc.h | 72 +++++
drivers/scsi/elx/libefc/efc_lib.c | 41 +++
drivers/scsi/elx/libefc/efclib.h | 640 ++++++++++++++++++++++++++++++++++++++
3 files changed, 753 insertions(+)
create mode 100644 drivers/scsi/elx/libefc/efc.h
create mode 100644 drivers/scsi/elx/libefc/efc_lib.c
create mode 100644 drivers/scsi/elx/libefc/efclib.h

diff --git a/drivers/scsi/elx/libefc/efc.h b/drivers/scsi/elx/libefc/efc.h
new file mode 100644
index 000000000000..c93c6d59b21a
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#ifndef __EFC_H__
+#define __EFC_H__
+
+#include "../include/efc_common.h"
+#include "efclib.h"
+#include "efc_sm.h"
+#include "efc_domain.h"
+#include "efc_sport.h"
+#include "efc_node.h"
+#include "efc_fabric.h"
+#include "efc_device.h"
+
+#define EFC_MAX_REMOTE_NODES 2048
+#define NODE_SPARAMS_SIZE 256
+
+enum efc_hw_rtn {
+ EFC_HW_RTN_SUCCESS = 0,
+ EFC_HW_RTN_SUCCESS_SYNC = 1,
+ EFC_HW_RTN_ERROR = -1,
+ EFC_HW_RTN_NO_RESOURCES = -2,
+ EFC_HW_RTN_NO_MEMORY = -3,
+ EFC_HW_RTN_IO_NOT_ACTIVE = -4,
+ EFC_HW_RTN_IO_ABORT_IN_PROGRESS = -5,
+ EFC_HW_RTN_IO_PORT_OWNED_ALREADY_ABORTED = -6,
+ EFC_HW_RTN_INVALID_ARG = -7,
+};
+
+#define EFC_HW_RTN_IS_ERROR(e) ((e) < 0)
+
+enum efc_scsi_del_initiator_reason {
+ EFC_SCSI_INITIATOR_DELETED,
+ EFC_SCSI_INITIATOR_MISSING,
+};
+
+enum efc_scsi_del_target_reason {
+ EFC_SCSI_TARGET_DELETED,
+ EFC_SCSI_TARGET_MISSING,
+};
+
+#define EFC_SCSI_CALL_COMPLETE 0
+#define EFC_SCSI_CALL_ASYNC 1
+
+#define EFC_FC_ELS_DEFAULT_RETRIES 3
+
+/* Timeouts */
+#define EFC_FC_ELS_SEND_DEFAULT_TIMEOUT 0
+#define EFC_FC_FLOGI_TIMEOUT_SEC 5
+#define EFC_FC_DOMAIN_SHUTDOWN_TIMEOUT_USEC 30000000
+
+#define domain_sm_trace(domain) \
+ efc_log_debug(domain->efc, "[domain:%s] %-20s %-20s\n", \
+ domain->display_name, __func__, efc_sm_event_name(evt)) \
+
+#define domain_trace(domain, fmt, ...) \
+ efc_log_debug(domain->efc, \
+ "[%s]" fmt, domain->display_name, ##__VA_ARGS__) \
+
+#define node_sm_trace() \
+ efc_log_debug(node->efc, \
+ "[%s] %-20s\n", node->display_name, efc_sm_event_name(evt)) \
+
+#define sport_sm_trace(sport) \
+ efc_log_debug(sport->efc, \
+ "[%s] %-20s\n", sport->display_name, efc_sm_event_name(evt)) \
+
+#endif /* __EFC_H__ */
diff --git a/drivers/scsi/elx/libefc/efc_lib.c b/drivers/scsi/elx/libefc/efc_lib.c
new file mode 100644
index 000000000000..894cce9a39f4
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc_lib.c
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include "efc.h"
+
+int efcport_init(struct efc *efc)
+{
+ u32 rc = EFC_SUCCESS;
+
+ spin_lock_init(&efc->lock);
+ INIT_LIST_HEAD(&efc->vport_list);
+
+ /* Create Node pool */
+ efc->node_pool = mempool_create_kmalloc_pool(EFC_MAX_REMOTE_NODES,
+ sizeof(struct efc_node));
+ if (!efc->node_pool) {
+ efc_log_err(efc, "Can't allocate node pool\n");
+ return -ENOMEM;
+ }
+
+ efc->node_dma_pool = dma_pool_create("node_dma_pool", &efc->pcidev->dev,
+ NODE_SPARAMS_SIZE, 0, 0);
+ if (!efc->node_dma_pool) {
+ efc_log_err(efc, "Can't allocate node dma pool\n");
+ mempool_destroy(efc->node_pool);
+ return -ENOMEM;
+ }
+
+ return rc;
+}
+
+void efcport_destroy(struct efc *efc)
+{
+ mempool_destroy(efc->node_pool);
+ dma_pool_destroy(efc->node_dma_pool);
+}
diff --git a/drivers/scsi/elx/libefc/efclib.h b/drivers/scsi/elx/libefc/efclib.h
new file mode 100644
index 000000000000..9ac52ca7ec83
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efclib.h
@@ -0,0 +1,640 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+#ifndef __EFCLIB_H__
+#define __EFCLIB_H__
+
+#include "scsi/fc/fc_els.h"
+#include "scsi/fc/fc_fs.h"
+#include "scsi/fc/fc_ns.h"
+#include "scsi/fc/fc_gs.h"
+#include "scsi/fc_frame.h"
+#include "../include/efc_common.h"
+
+#define EFC_SERVICE_PARMS_LENGTH 0x74
+#define EFC_NAME_LENGTH 32
+#define EFC_DISPLAY_BUS_INFO_LENGTH 16
+
+#define EFC_WWN_LENGTH 32
+
+/* Local port topology */
+enum efc_sport_topology {
+ EFC_SPORT_TOPOLOGY_UNKNOWN = 0,
+ EFC_SPORT_TOPOLOGY_FABRIC,
+ EFC_SPORT_TOPOLOGY_P2P,
+ EFC_SPORT_TOPOLOGY_LOOP,
+};
+
+#define enable_target_rscn(efc) 1
+
+enum efc_node_shutd_rsn {
+ EFC_NODE_SHUTDOWN_DEFAULT = 0,
+ EFC_NODE_SHUTDOWN_EXPLICIT_LOGO,
+ EFC_NODE_SHUTDOWN_IMPLICIT_LOGO,
+};
+
+enum efc_node_send_ls_acc {
+ EFC_NODE_SEND_LS_ACC_NONE = 0,
+ EFC_NODE_SEND_LS_ACC_PLOGI,
+ EFC_NODE_SEND_LS_ACC_PRLI,
+};
+
+#define EFC_LINK_STATUS_UP 0
+#define EFC_LINK_STATUS_DOWN 1
+
+/* State machine context header */
+struct efc_sm_ctx {
+ void *(*current_state)(struct efc_sm_ctx *ctx,
+ u32 evt, void *arg);
+
+ const char *description;
+ void *app;
+};
+
+/* Description of discovered Fabric Domain */
+struct efc_domain_record {
+ u32 index;
+ u32 priority;
+ u8 address[6];
+ u8 wwn[8];
+ union {
+ u8 vlan[512];
+ u8 loop[128];
+ } map;
+ u32 speed;
+ u32 fc_id;
+ bool is_loop;
+ bool is_nport;
+};
+
+/* Fabric/Domain events */
+enum efc_hw_domain_event {
+ EFC_HW_DOMAIN_ALLOC_OK,
+ EFC_HW_DOMAIN_ALLOC_FAIL,
+ EFC_HW_DOMAIN_ATTACH_OK,
+ EFC_HW_DOMAIN_ATTACH_FAIL,
+ EFC_HW_DOMAIN_FREE_OK,
+ EFC_HW_DOMAIN_FREE_FAIL,
+ EFC_HW_DOMAIN_LOST,
+ EFC_HW_DOMAIN_FOUND,
+ EFC_HW_DOMAIN_CHANGED,
+};
+
+enum efc_hw_port_event {
+ EFC_HW_PORT_ALLOC_OK,
+ EFC_HW_PORT_ALLOC_FAIL,
+ EFC_HW_PORT_ATTACH_OK,
+ EFC_HW_PORT_ATTACH_FAIL,
+ EFC_HW_PORT_FREE_OK,
+ EFC_HW_PORT_FREE_FAIL,
+};
+
+enum efc_hw_remote_node_event {
+ EFC_HW_NODE_ATTACH_OK,
+ EFC_HW_NODE_ATTACH_FAIL,
+ EFC_HW_NODE_FREE_OK,
+ EFC_HW_NODE_FREE_FAIL,
+ EFC_HW_NODE_FREE_ALL_OK,
+ EFC_HW_NODE_FREE_ALL_FAIL,
+};
+
+enum efc_hw_node_els_event {
+ EFC_HW_SRRS_ELS_REQ_OK,
+ EFC_HW_SRRS_ELS_CMPL_OK,
+ EFC_HW_SRRS_ELS_REQ_FAIL,
+ EFC_HW_SRRS_ELS_CMPL_FAIL,
+ EFC_HW_SRRS_ELS_REQ_RJT,
+ EFC_HW_ELS_REQ_ABORTED,
+};
+
+struct efc_sli_port {
+ struct list_head list_entry;
+ struct efc *efc;
+ u32 tgt_id;
+ u32 index;
+ u32 instance_index;
+ char display_name[EFC_NAME_LENGTH];
+ struct efc_domain *domain;
+ bool is_vport;
+ u64 wwpn;
+ u64 wwnn;
+ struct list_head node_list;
+ void *ini_sport;
+ void *tgt_sport;
+ void *tgt_data;
+ void *ini_data;
+
+ /* Members private to HW/SLI */
+ void *hw;
+ u32 indicator;
+ u32 fc_id;
+ struct efc_dma dma;
+
+ u8 wwnn_str[EFC_WWN_LENGTH];
+ __be64 sli_wwpn;
+ __be64 sli_wwnn;
+ bool free_req_pending;
+ bool attached;
+
+ struct efc_sm_ctx sm;
+ struct xarray lookup;
+ bool enable_ini;
+ bool enable_tgt;
+ bool enable_rscn;
+ bool shutting_down;
+ bool p2p_winner;
+ enum efc_sport_topology topology;
+ u8 service_params[EFC_SERVICE_PARMS_LENGTH];
+ u32 p2p_remote_port_id;
+ u32 p2p_port_id;
+};
+
+/**
+ * Fibre Channel domain object
+ *
+ * This object is a container for the various SLI components needed
+ * to connect to the domain of a FC or FCoE switch
+ * @efc: pointer back to efc
+ * @instance_index: unique instance index value
+ * @display_name: Node display name
+ * @sport_list: linked list of SLI ports
+ * @ini_domain: initiator backend private domain data
+ * @tgt_domain: target backend private domain data
+ * @hw: pointer to HW
+ * @sm: state machine context
+ * @fcf: FC Forwarder table index
+ * @fcf_indicator: FCFI
+ * @indicator: VFI
+ * @dma: memory for Service Parameters
+ * @fcf_wwn: WWN for FCF/switch
+ * @drvsm: driver domain sm context
+ * @drvsm_lock: driver domain sm lock
+ * @attached: set true after attach completes
+ * @is_fc: is FC
+ * @is_loop: is loop topology
+ * @is_nlport: is public loop
+ * @domain_found_pending:A domain found is pending, drec is updated
+ * @req_domain_free: True if domain object should be free'd
+ * @req_accept_frames: set in domain state machine to enable frames
+ * @domain_notify_pend: Set in domain SM to avoid duplicate node event post
+ * @pending_drec: Pending drec if a domain found is pending
+ * @service_params: any sports service parameters
+ * @flogi_service_params:Fabric/P2p service parameters from FLOGI
+ * @lookup: d_id to node lookup object
+ * @sport: Pointer to first (physical) SLI port
+ */
+struct efc_domain {
+ struct efc *efc;
+ char display_name[EFC_NAME_LENGTH];
+ struct list_head sport_list;
+ void *ini_domain;
+ void *tgt_domain;
+
+ /* Declarations private to HW/SLI */
+ void *hw;
+ u32 fcf;
+ u32 fcf_indicator;
+ u32 indicator;
+ struct efc_dma dma;
+
+ /* Declarations private to FC transport */
+ u64 fcf_wwn;
+ struct efc_sm_ctx drvsm;
+ bool attached;
+ bool is_fc;
+ bool is_loop;
+ bool is_nlport;
+ bool domain_found_pending;
+ bool req_domain_free;
+ bool req_accept_frames;
+ bool domain_notify_pend;
+
+ struct efc_domain_record pending_drec;
+ u8 service_params[EFC_SERVICE_PARMS_LENGTH];
+ u8 flogi_service_params[EFC_SERVICE_PARMS_LENGTH];
+
+ struct xarray lookup;
+
+ struct efc_sli_port *sport;
+ u32 sport_instance_count;
+};
+
+/**
+ * Remote Node object
+ *
+ * This object represents a connection between the SLI port and another
+ * Nx_Port on the fabric. Note this can be either a well known port such
+ * as a F_Port (i.e. ff:ff:fe) or another N_Port.
+ * @indicator: RPI
+ * @fc_id: FC address
+ * @attached: true if attached
+ * @node_group: true if in node group
+ * @free_group: true if the node group should be free'd
+ * @sport: associated SLI port
+ * @node: associated node
+ */
+struct efc_remote_node {
+ u32 indicator;
+ u32 index;
+ u32 fc_id;
+
+ bool attached;
+ bool node_group;
+ bool free_group;
+
+ struct efc_sli_port *sport;
+ void *node;
+};
+
+/**
+ * FC Node object
+ * @efc: pointer back to efc structure
+ * @display_name: Node display name
+ * @hold_frames: hold incoming frames if true
+ * @lock: node wide lock
+ * @active_ios: active I/O's for this node
+ * @ini_node: backend initiator private node data
+ * @tgt_node: backend target private node data
+ * @rnode: Remote node
+ * @sm: state machine context
+ * @evtdepth: current event posting nesting depth
+ * @req_free: this node is to be free'd
+ * @attached: node is attached (REGLOGIN complete)
+ * @fcp_enabled: node is enabled to handle FCP
+ * @rscn_pending: for name server node RSCN is pending
+ * @send_plogi: send PLOGI accept, upon completion of node attach
+ * @send_plogi_acc: TRUE if io_alloc() is enabled.
+ * @send_ls_acc: type of LS acc to send
+ * @ls_acc_io: SCSI IO for LS acc
+ * @ls_acc_oxid: OX_ID for pending accept
+ * @ls_acc_did: D_ID for pending accept
+ * @shutdown_reason: reason for node shutdown
+ * @sparm_dma_buf: service parameters buffer
+ * @service_params: plogi/acc frame from remote device
+ * @pend_frames_lock: lock for inbound pending frames list
+ * @pend_frames: inbound pending frames list
+ * @pend_frames_processed:count of frames processed in hold frames interval
+ * @ox_id_in_use: used to verify one at a time us of ox_id
+ * @els_retries_remaining:for ELS, number of retries remaining
+ * @els_req_cnt: number of outstanding ELS requests
+ * @els_cmpl_cnt: number of outstanding ELS completions
+ * @abort_cnt: Abort counter for debugging purpos
+ * @current_state_name: current node state
+ * @prev_state_name: previous node state
+ * @current_evt: current event
+ * @prev_evt: previous event
+ * @targ: node is target capable
+ * @init: node is init capable
+ * @refound: Handle node refound case when node is being deleted
+ * @els_io_pend_list: list of pending (not yet processed) ELS IOs
+ * @els_io_active_list: list of active (processed) ELS IOs
+ * @nodedb_state: Node debugging, saved state
+ * @gidpt_delay_timer: GIDPT delay timer
+ * @time_last_gidpt_msec:Start time of last target RSCN GIDPT
+ * @wwnn: remote port WWNN
+ * @wwpn: remote port WWPN
+ * @chained_io_count: Statistics : count of IOs with chained SGL's
+ */
+struct efc_node {
+ struct list_head list_entry;
+ struct efc *efc;
+ char display_name[EFC_NAME_LENGTH];
+ struct efc_sli_port *sport;
+ bool hold_frames;
+ spinlock_t active_ios_lock;
+ struct list_head active_ios;
+ void *ini_node;
+ void *tgt_node;
+
+ struct efc_remote_node rnode;
+ /* Declarations private to FC transport */
+ struct efc_sm_ctx sm;
+ u32 evtdepth;
+
+ bool req_free;
+ bool attached;
+ bool fcp_enabled;
+ bool rscn_pending;
+ bool send_plogi;
+ bool send_plogi_acc;
+ bool io_alloc_enabled;
+
+ enum efc_node_send_ls_acc send_ls_acc;
+ void *ls_acc_io;
+ u32 ls_acc_oxid;
+ u32 ls_acc_did;
+ enum efc_node_shutd_rsn shutdown_reason;
+ struct efc_dma sparm_dma_buf;
+ u8 service_params[EFC_SERVICE_PARMS_LENGTH];
+ spinlock_t pend_frames_lock;
+ struct list_head pend_frames;
+ u32 pend_frames_processed;
+ u32 ox_id_in_use;
+ u32 els_retries_remaining;
+ u32 els_req_cnt;
+ u32 els_cmpl_cnt;
+ u32 abort_cnt;
+
+ char current_state_name[EFC_NAME_LENGTH];
+ char prev_state_name[EFC_NAME_LENGTH];
+ int current_evt;
+ int prev_evt;
+ bool targ;
+ bool init;
+ bool refound;
+ struct list_head els_io_pend_list;
+ struct list_head els_io_active_list;
+
+ void *(*nodedb_state)(struct efc_sm_ctx *ctx,
+ u32 evt, void *arg);
+ struct timer_list gidpt_delay_timer;
+ time_t time_last_gidpt_msec;
+
+ char wwnn[EFC_WWN_LENGTH];
+ char wwpn[EFC_WWN_LENGTH];
+
+ u32 chained_io_count;
+};
+
+/**
+ * NPIV port
+ *
+ * Collection of the information required to restore a virtual port across
+ * link events
+ * @wwnn: node name
+ * @wwpn: port name
+ * @fc_id: port id
+ * @tgt_data: target backend pointer
+ * @ini_data: initiator backend pointe
+ * @sport: Used to match record after attaching for update
+ *
+ */
+
+struct efc_vport_spec {
+ struct list_head list_entry;
+ u64 wwnn;
+ u64 wwpn;
+ u32 fc_id;
+ bool enable_tgt;
+ bool enable_ini;
+ void *tgt_data;
+ void *ini_data;
+ struct efc_sli_port *sport;
+};
+
+#define node_printf(node, fmt, args...) \
+ pr_info("[%s] " fmt, node->display_name, ##args)
+
+/* Node SM IO Context Callback structure */
+struct efc_node_cb {
+ int status;
+ int ext_status;
+ struct efc_hw_rq_buffer *header;
+ struct efc_hw_rq_buffer *payload;
+ struct efc_dma els_rsp;
+};
+
+/* HW unsolicited callback status */
+enum efc_hw_unsol_status {
+ EFC_HW_UNSOL_SUCCESS,
+ EFC_HW_UNSOL_ERROR,
+ EFC_HW_UNSOL_ABTS_RCVD,
+ EFC_HW_UNSOL_MAX, /**< must be last */
+};
+
+enum efc_hw_rq_buffer_type {
+ EFC_HW_RQ_BUFFER_TYPE_HDR,
+ EFC_HW_RQ_BUFFER_TYPE_PAYLOAD,
+ EFC_HW_RQ_BUFFER_TYPE_MAX,
+};
+
+struct efc_hw_rq_buffer {
+ u16 rqindex;
+ struct efc_dma dma;
+};
+
+/*
+ * Defines a general FC sequence object,
+ * consisting of a header, payload buffers
+ * and a HW IO in the case of port owned XRI
+ */
+struct efc_hw_sequence {
+ struct list_head list_entry;
+ void *hw;
+ u8 fcfi;
+ u8 auto_xrdy;
+ u8 out_of_xris;
+
+ struct efc_hw_rq_buffer *header;
+ struct efc_hw_rq_buffer *payload;
+
+ enum efc_hw_unsol_status status;
+ struct efct_hw_io *hio;
+
+ void *hw_priv;
+};
+
+/* Return value indiacating the sequence can not be freed */
+#define EFC_HW_SEQ_HOLD 0
+/* Return value indiacating the sequence can be freed */
+#define EFC_HW_SEQ_FREE 1
+
+struct libefc_function_template {
+ /*Domain*/
+ int (*hw_domain_alloc)(struct efc *efc, struct efc_domain *d, u32 fcf);
+ int (*hw_domain_attach)(struct efc *efc, struct efc_domain *d, u32 id);
+
+ int (*hw_domain_free)(struct efc *hw, struct efc_domain *d);
+ int (*hw_domain_force_free)(struct efc *efc, struct efc_domain *d);
+
+ int (*new_domain)(struct efc *efc, struct efc_domain *d);
+ void (*del_domain)(struct efc *efc, struct efc_domain *d);
+
+ void (*domain_hold_frames)(struct efc *efc, struct efc_domain *d);
+ void (*domain_accept_frames)(struct efc *efc, struct efc_domain *d);
+
+ /*Sport*/
+ int (*hw_port_alloc)(struct efc *hw, struct efc_sli_port *sp,
+ struct efc_domain *d, u8 *val);
+ int (*hw_port_attach)(struct efc *hw, struct efc_sli_port *sp,
+ u32 fc_id);
+
+ int (*hw_port_free)(struct efc *hw, struct efc_sli_port *sp);
+
+ int (*new_sport)(struct efc *efc, struct efc_sli_port *sp);
+ void (*del_sport)(struct efc *efc, struct efc_sli_port *sp);
+
+ /*Node*/
+ int (*hw_node_alloc)(struct efc *hw, struct efc_remote_node *n,
+ u32 fc_addr, struct efc_sli_port *sport);
+
+ int (*hw_node_attach)(struct efc *hw, struct efc_remote_node *n,
+ struct efc_dma *sparams);
+
+ int (*hw_node_detach)(struct efc *hw, struct efc_remote_node *r);
+
+ int (*hw_node_free_resources)(struct efc *efc,
+ struct efc_remote_node *node);
+ int (*node_purge_pending)(struct efc *efc, struct efc_node *n);
+
+ void (*node_io_cleanup)(struct efc *efc, struct efc_node *n,
+ bool force);
+ void (*node_els_cleanup)(struct efc *efc, struct efc_node *n,
+ bool force);
+ void (*node_abort_all_els)(struct efc *efc, struct efc_node *n);
+
+ /*Scsi*/
+ void (*scsi_io_alloc_disable)(struct efc *efc, struct efc_node *node);
+ void (*scsi_io_alloc_enable)(struct efc *efc, struct efc_node *node);
+
+ int (*scsi_validate_node)(struct efc *efc, struct efc_node *n);
+ int (*scsi_new_node)(struct efc *efc, struct efc_node *n);
+
+ int (*scsi_del_node)(struct efc *efc, struct efc_node *n, int reason);
+
+ /*Send ELS*/
+ void *(*els_send)(struct efc *efc, struct efc_node *node,
+ u32 cmd, u32 timeout_sec, u32 retries);
+
+ void *(*els_send_ct)(struct efc *efc, struct efc_node *node,
+ u32 cmd, u32 timeout_sec, u32 retries);
+
+ void *(*els_send_resp)(struct efc *efc, struct efc_node *node,
+ u32 cmd, u16 ox_id);
+
+ void *(*bls_send_acc_hdr)(struct efc *efc, struct efc_node *n,
+ struct fc_frame_header *hdr);
+ void *(*send_flogi_p2p_acc)(struct efc *efc, struct efc_node *n,
+ u32 ox_id, u32 s_id);
+
+ int (*send_ct_rsp)(struct efc *efc, struct efc_node *node,
+ u16 ox_id, struct fc_ct_hdr *hdr,
+ u32 rsp_code, u32 reason_code, u32 rsn_code_expl);
+
+ void *(*send_ls_rjt)(struct efc *efc, struct efc_node *node,
+ u32 ox, u32 rcode, u32 rcode_expl, u32 vendor);
+
+ int (*dispatch_fcp_cmd)(struct efc_node *node,
+ struct efc_hw_sequence *seq);
+
+ int (*recv_abts_frame)(struct efc *efc, struct efc_node *node,
+ struct efc_hw_sequence *seq);
+};
+
+#define EFC_LOG_LIB 0x01
+#define EFC_LOG_NODE 0x02
+#define EFC_LOG_PORT 0x04
+#define EFC_LOG_DOMAIN 0x08
+#define EFC_LOG_ELS 0x10
+#define EFC_LOG_DOMAIN_SM 0x20
+#define EFC_LOG_SM 0x40
+
+/* efc library port structure */
+struct efc {
+ void *base;
+ struct pci_dev *pcidev;
+ u64 req_wwpn;
+ u64 req_wwnn;
+
+ u64 def_wwpn;
+ u64 def_wwnn;
+ u64 max_xfer_size;
+ u32 nodes_count;
+ mempool_t *node_pool;
+ struct dma_pool *node_dma_pool;
+
+ u32 link_status;
+
+ /* vport */
+ struct list_head vport_list;
+ /* lock to protect the vport list*/
+ spinlock_t vport_lock;
+
+ struct libefc_function_template tt;
+ /* lock to protect the discovery library */
+ spinlock_t lock;
+
+ bool enable_ini;
+ bool enable_tgt;
+
+ u32 log_level;
+
+ struct efc_domain *domain;
+ void (*domain_free_cb)(struct efc *efc, void *arg);
+ void *domain_free_cb_arg;
+
+ time_t tgt_rscn_delay_msec;
+ time_t tgt_rscn_period_msec;
+
+ bool external_loopback;
+ u32 nodedb_mask;
+};
+
+/*
+ * EFC library registration
+ * **********************************/
+int efcport_init(struct efc *efc);
+void efcport_destroy(struct efc *efc);
+/*
+ * EFC Domain
+ * **********************************/
+int efc_domain_cb(void *arg, int event, void *data);
+void efc_domain_force_free(struct efc_domain *domain);
+void
+efc_register_domain_free_cb(struct efc *efc,
+ void (*callback)(struct efc *efc, void *arg),
+ void *arg);
+
+/*
+ * EFC Local port
+ * **********************************/
+int efc_lport_cb(void *arg, int event, void *data);
+struct efc_vport_spec *efc_vport_create_spec(struct efc *efc, u64 wwnn,
+ u64 wwpn, u32 fc_id, bool enable_ini, bool enable_tgt,
+ void *tgt_data, void *ini_data);
+int efc_sport_vport_new(struct efc_domain *domain, u64 wwpn,
+ u64 wwnn, u32 fc_id, bool ini, bool tgt,
+ void *tgt_data, void *ini_data);
+int efc_sport_vport_del(struct efc *efc, struct efc_domain *domain,
+ u64 wwpn, u64 wwnn);
+
+void efc_vport_del_all(struct efc *efc);
+
+struct efc_sli_port *efc_sport_find(struct efc_domain *domain, u32 d_id);
+
+/*
+ * EFC Node
+ * **********************************/
+int efc_remote_node_cb(void *arg, int event, void *data);
+u64 efc_node_get_wwnn(struct efc_node *node);
+u64 efc_node_get_wwpn(struct efc_node *node);
+struct efc_node *efc_node_find(struct efc_sli_port *sport, u32 id);
+void efc_node_fcid_display(u32 fc_id, char *buffer, u32 buf_len);
+
+void efc_node_post_els_resp(struct efc_node *node, u32 evt, void *arg);
+void efc_node_post_shutdown(struct efc_node *node, u32 evt, void *arg);
+/*
+ * EFC FCP/ELS/CT interface
+ * **********************************/
+int efc_node_recv_abts_frame(struct efc *efc,
+ struct efc_node *node,
+ struct efc_hw_sequence *seq);
+void efc_node_recv_els_frame(struct efc_node *node, struct efc_hw_sequence *s);
+int efc_domain_dispatch_frame(void *arg, struct efc_hw_sequence *seq);
+
+void efc_node_dispatch_frame(void *arg, struct efc_hw_sequence *seq);
+
+void efc_node_recv_ct_frame(struct efc_node *node, struct efc_hw_sequence *seq);
+void efc_node_recv_fcp_cmd(struct efc_node *node, struct efc_hw_sequence *seq);
+
+/*
+ * EFC SCSI INTERACTION LAYER
+ * **********************************/
+void efc_scsi_del_initiator_complete(struct efc *efc, struct efc_node *node);
+void efc_scsi_del_target_complete(struct efc *efc, struct efc_node *node);
+void efc_scsi_io_list_empty(struct efc *efc, struct efc_node *node);
+
+#endif /* __EFCLIB_H__ */
--
2.16.4