This patch continues the libefc library population.
This patch adds library interface definitions for:
- SLI and FC port (aka n_port_id) registration, allocation and
deallocation.
Co-developed-by: Ram Vegesna <ram.vegesna@xxxxxxxxxxxx>
Signed-off-by: Ram Vegesna <ram.vegesna@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
Reviewed-by: Daniel Wagner <dwagner@xxxxxxx>
---
v6:
Change efc_nport_cb() return type from int to void
---
drivers/scsi/elx/libefc/efc_nport.c | 792 ++++++++++++++++++++++++++++
drivers/scsi/elx/libefc/efc_nport.h | 50 ++
2 files changed, 842 insertions(+)
create mode 100644 drivers/scsi/elx/libefc/efc_nport.c
create mode 100644 drivers/scsi/elx/libefc/efc_nport.h
diff --git a/drivers/scsi/elx/libefc/efc_nport.c b/drivers/scsi/elx/libefc/efc_nport.c
new file mode 100644
index 000000000000..ec84198fb209
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc_nport.c
@@ -0,0 +1,792 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+/*
+ * NPORT
+ *
+ * Port object for physical port and NPIV ports.
+ */
+
+/*
+ * NPORT REFERENCE COUNTING
+ *
+ * A nport reference should be taken when:
+ * - an nport is allocated
+ * - a vport populates associated nport
+ * - a remote node is allocated
+ * - a unsolicited frame is processed
+ * The reference should be dropped when:
+ * - the unsolicited frame processesing is done
+ * - the remote node is removed
+ * - the vport is removed
+ * - the nport is removed
+ */
+
+#include "efc.h"
+
+void
+efc_nport_cb(void *arg, int event, void *data)
+{
+ struct efc *efc = arg;
+ struct efc_nport *nport = data;
+ unsigned long flags = 0;
+
+ efc_log_debug(efc, "nport event: %s\n", efc_sm_event_name(event));
+
+ spin_lock_irqsave(&efc->lock, flags);
+ efc_sm_post_event(&nport->sm, event, NULL);
+ spin_unlock_irqrestore(&efc->lock, flags);
+}
+
+static struct efc_nport *
+efc_nport_find_wwn(struct efc_domain *domain, uint64_t wwnn, uint64_t wwpn)
+{
+ struct efc_nport *nport = NULL;
+
+ /* Find a nport, given the WWNN and WWPN */
+ list_for_each_entry(nport, &domain->nport_list, list_entry) {
+ if (nport->wwnn == wwnn && nport->wwpn == wwpn)
+ return nport;
+ }
+ return NULL;
+}
+
+static void
+_efc_nport_free(struct kref *arg)
+{
+ struct efc_nport *nport = container_of(arg, struct efc_nport, ref);
+
+ kfree(nport);
+}
+
+struct efc_nport *
+efc_nport_alloc(struct efc_domain *domain, uint64_t wwpn, uint64_t wwnn,
+ u32 fc_id, bool enable_ini, bool enable_tgt)
+{
+ struct efc_nport *nport;
+
+ if (domain->efc->enable_ini)
+ enable_ini = 0;
+
+ /* Return a failure if this nport has already been allocated */
+ if ((wwpn != 0) || (wwnn != 0)) {
+ nport = efc_nport_find_wwn(domain, wwnn, wwpn);
+ if (nport) {
+ efc_log_err(domain->efc,
+ "Err: NPORT %016llX %016llX already allocated\n",
+ wwnn, wwpn);
+ return NULL;
+ }
+ }
+
+ nport = kzalloc(sizeof(*nport), GFP_ATOMIC);
+ if (!nport)
+ return nport;
+
+ /* initialize refcount */
+ kref_init(&nport->ref);
+ nport->release = _efc_nport_free;
+
+ nport->efc = domain->efc;
+ snprintf(nport->display_name, sizeof(nport->display_name), "------");
+ nport->domain = domain;
+ xa_init(&nport->lookup);
+ nport->instance_index = domain->nport_count++;
+ nport->sm.app = nport;
+ nport->enable_ini = enable_ini;
+ nport->enable_tgt = enable_tgt;
+ nport->enable_rscn = (nport->enable_ini ||
+ (nport->enable_tgt && enable_target_rscn(nport->efc)));
+
+ /* Copy service parameters from domain */
+ memcpy(nport->service_params, domain->service_params,
+ sizeof(struct fc_els_flogi));
+
+ /* Update requested fc_id */
+ nport->fc_id = fc_id;
+
+ /* Update the nport's service parameters for the new wwn's */
+ nport->wwpn = wwpn;
+ nport->wwnn = wwnn;
+ snprintf(nport->wwnn_str, sizeof(nport->wwnn_str), "%016llX",
+ (unsigned long long)wwnn);
+
+ /*
+ * if this is the "first" nport of the domain,
+ * then make it the "phys" nport
+ */
+ if (list_empty(&domain->nport_list))
+ domain->nport = nport;
+
+ INIT_LIST_HEAD(&nport->list_entry);
+ list_add_tail(&nport->list_entry, &domain->nport_list);
+
+ kref_get(&domain->ref);
+
+ efc_log_debug(domain->efc, "New Nport [%s]\n", nport->display_name);
+
+ return nport;
+}
+
+void
+efc_nport_free(struct efc_nport *nport)
+{
+ struct efc_domain *domain;
+
+ if (!nport)
+ return;
+
+ domain = nport->domain;
+ efc_log_debug(domain->efc, "[%s] free nport\n", nport->display_name);
+ list_del(&nport->list_entry);
+ /*
+ * if this is the physical nport,
+ * then clear it out of the domain
+ */
+ if (nport == domain->nport)
+ domain->nport = NULL;
+
+ xa_destroy(&nport->lookup);
+ xa_erase(&domain->lookup, nport->fc_id);
+
+ if (list_empty(&domain->nport_list))
+ efc_domain_post_event(domain, EFC_EVT_ALL_CHILD_NODES_FREE,
+ NULL);
+
+ kref_put(&domain->ref, domain->release);
+ kref_put(&nport->ref, nport->release);
+
+}
+
+struct efc_nport *
+efc_nport_find(struct efc_domain *domain, u32 d_id)
+{
+ struct efc_nport *nport;
+
+ /* Find a nport object, given an FC_ID */
+ nport = xa_load(&domain->lookup, d_id);
+ if (!nport || !kref_get_unless_zero(&nport->ref))
+ return NULL;
+
+ return nport;
+}
+
+int
+efc_nport_attach(struct efc_nport *nport, u32 fc_id)
+{
+ int rc;
+ struct efc_node *node;
+ struct efc *efc = nport->efc;
+ unsigned long index;
+
+ /* Set our lookup */
+ rc = xa_err(xa_store(&nport->domain->lookup, fc_id, nport, GFP_ATOMIC));
+ if (rc) {
+ efc_log_err(efc, "Sport lookup store failed: %d\n", rc);
+ return rc;
+ }
+
+ /* Update our display_name */
+ efc_node_fcid_display(fc_id, nport->display_name,
+ sizeof(nport->display_name));
+
+ xa_for_each(&nport->lookup, index, node) {
+ efc_node_update_display_name(node);
+ }
+
+ efc_log_debug(nport->efc, "[%s] attach nport: fc_id x%06x\n",
+ nport->display_name, fc_id);
+
+ /* Register a nport, given an FC_ID */
+ rc = efc_cmd_nport_attach(efc, nport, fc_id);
+ if (rc != EFC_HW_RTN_SUCCESS) {
+ efc_log_err(nport->efc,
+ "efc_hw_port_attach failed: %d\n", rc);
+ return EFC_FAIL;
+ }
+ return EFC_SUCCESS;
+}
+
+static void
+efc_nport_shutdown(struct efc_nport *nport)
+{
+ struct efc *efc = nport->efc;
+ struct efc_node *node;
+ unsigned long index;
+
+ xa_for_each(&nport->lookup, index, node) {
+ if (!(node->rnode.fc_id == FC_FID_FLOGI && nport->is_vport)) {
+ efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
+ continue;
+ }
+
+ /*
+ * If this is a vport, logout of the fabric
+ * controller so that it deletes the vport
+ * on the switch.
+ */
+ /* if link is down, don't send logo */
+ if (efc->link_status == EFC_LINK_STATUS_DOWN) {
+ efc_node_post_event(node, EFC_EVT_SHUTDOWN, NULL);
+ continue;
+ }
+
+ efc_log_debug(efc, "[%s] nport shutdown vport, send logo\n",
+ node->display_name);
+
+ if (!efc_send_logo(node)) {
+ /* sent LOGO, wait for response */
+ efc_node_transition(node, __efc_d_wait_logo_rsp, NULL);
+ continue;
+ }
+
+ /*
+ * failed to send LOGO,
+ * go ahead and cleanup node anyways
+ */
+ node_printf(node, "Failed to send LOGO\n");
+ efc_node_post_event(node, EFC_EVT_SHUTDOWN_EXPLICIT_LOGO, NULL);
+ }
+}
+
+static void
+efc_vport_link_down(struct efc_nport *nport)
+{
+ struct efc *efc = nport->efc;
+ struct efc_vport_spec *vport;
+
+ /* Clear the nport reference in the vport specification */
+ list_for_each_entry(vport, &efc->vport_list, list_entry) {
+ if (vport->nport == nport) {
+ kref_put(&nport->ref, nport->release);
+ vport->nport = NULL;
+ break;
+ }
+ }
+}
+
+static void
+__efc_nport_common(const char *funcname, struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc_domain *domain = nport->domain;
+ struct efc *efc = nport->efc;
+
+ switch (evt) {
+ case EFC_EVT_ENTER:
+ case EFC_EVT_REENTER:
+ case EFC_EVT_EXIT:
+ case EFC_EVT_ALL_CHILD_NODES_FREE:
+ break;
+ case EFC_EVT_NPORT_ATTACH_OK:
+ efc_sm_transition(ctx, __efc_nport_attached, NULL);
+ break;
+ case EFC_EVT_SHUTDOWN:
+ /* Flag this nport as shutting down */
+ nport->shutting_down = true;
+
+ if (nport->is_vport)
+ efc_vport_link_down(nport);
+
+ if (xa_empty(&nport->lookup)) {
+ /* Remove the nport from the domain's lookup table */
+ xa_erase(&domain->lookup, nport->fc_id);
+ efc_sm_transition(ctx, __efc_nport_wait_port_free,
+ NULL);
+ if (efc_cmd_nport_free(efc, nport)) {
+ efc_log_debug(nport->efc,
+ "efc_hw_port_free failed\n");
+ /* Not much we can do, free the nport anyways */
+ efc_nport_free(nport);
+ }
+ } else {
+ /* sm: node list is not empty / shutdown nodes */
+ efc_sm_transition(ctx,
+ __efc_nport_wait_shutdown, NULL);
+ efc_nport_shutdown(nport);
+ }
+ break;
+ default:
+ efc_log_debug(nport->efc, "[%s] %-20s %-20s not handled\n",
+ nport->display_name, funcname,
+ efc_sm_event_name(evt));
+ }
+}
+
+void
+__efc_nport_allocated(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc_domain *domain = nport->domain;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ /* the physical nport is attached */
+ case EFC_EVT_NPORT_ATTACH_OK:
+ WARN_ON(nport != domain->nport);
+ efc_sm_transition(ctx, __efc_nport_attached, NULL);
+ break;
+
+ case EFC_EVT_NPORT_ALLOC_OK:
+ /* ignore */
+ break;
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+void
+__efc_nport_vport_init(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc *efc = nport->efc;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ case EFC_EVT_ENTER: {
+ __be64 be_wwpn = cpu_to_be64(nport->wwpn);
+
+ if (nport->wwpn == 0)
+ efc_log_debug(efc, "vport: letting f/w select WWN\n");
+
+ if (nport->fc_id != U32_MAX) {
+ efc_log_debug(efc, "vport: hard coding port id: %x\n",
+ nport->fc_id);
+ }
+
+ efc_sm_transition(ctx, __efc_nport_vport_wait_alloc, NULL);
+ /* If wwpn is zero, then we'll let the f/w */
+ if (efc_cmd_nport_alloc(efc, nport, nport->domain,
+ nport->wwpn == 0 ? NULL :
+ (uint8_t *)&be_wwpn)) {
+ efc_log_err(efc, "Can't allocate port\n");
+ break;
+ }
+
+ break;
+ }
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+void
+__efc_nport_vport_wait_alloc(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc *efc = nport->efc;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ case EFC_EVT_NPORT_ALLOC_OK: {
+ struct fc_els_flogi *sp;
+
+ sp = (struct fc_els_flogi *)nport->service_params;
+ /*
+ * If we let f/w assign wwn's,
+ * then nport wwn's with those returned by hw
+ */
+ if (nport->wwnn == 0) {
+ nport->wwnn = be64_to_cpu(nport->sli_wwnn);
+ nport->wwpn = be64_to_cpu(nport->sli_wwpn);
+ snprintf(nport->wwnn_str, sizeof(nport->wwnn_str),
+ "%016llX", nport->wwpn);
+ }
+
+ /* Update the nport's service parameters */
+ sp->fl_wwpn = cpu_to_be64(nport->wwpn);
+ sp->fl_wwnn = cpu_to_be64(nport->wwnn);
+
+ /*
+ * if nport->fc_id is uninitialized,
+ * then request that the fabric node use FDISC
+ * to find an fc_id.
+ * Otherwise we're restoring vports, or we're in
+ * fabric emulation mode, so attach the fc_id
+ */
+ if (nport->fc_id == U32_MAX) {
+ struct efc_node *fabric;
+
+ fabric = efc_node_alloc(nport, FC_FID_FLOGI, false,
+ false);
+ if (!fabric) {
+ efc_log_err(efc, "efc_node_alloc() failed\n");
+ return;
+ }
+ efc_node_transition(fabric, __efc_vport_fabric_init,
+ NULL);
+ } else {
+ snprintf(nport->wwnn_str, sizeof(nport->wwnn_str),
+ "%016llX", nport->wwpn);
+ efc_nport_attach(nport, nport->fc_id);
+ }
+ efc_sm_transition(ctx, __efc_nport_vport_allocated, NULL);
+ break;
+ }
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+void
+__efc_nport_vport_allocated(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc *efc = nport->efc;
+
+ nport_sm_trace(nport);
+
+ /*
+ * This state is entered after the nport is allocated;
+ * it then waits for a fabric node
+ * FDISC to complete, which requests a nport attach.
+ * The nport attach complete is handled in this state.
+ */
+ switch (evt) {
+ case EFC_EVT_NPORT_ATTACH_OK: {
+ struct efc_node *node;
+
+ /* Find our fabric node, and forward this event */
+ node = efc_node_find(nport, FC_FID_FLOGI);
+ if (!node) {
+ efc_log_debug(efc, "can't find node %06x\n",
+ FC_FID_FLOGI);
+ break;
+ }
+ /* sm: / forward nport attach to fabric node */
+ efc_node_post_event(node, evt, NULL);
+ efc_sm_transition(ctx, __efc_nport_attached, NULL);
+ break;
+ }
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+static void
+efc_vport_update_spec(struct efc_nport *nport)
+{
+ struct efc *efc = nport->efc;
+ struct efc_vport_spec *vport;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&efc->vport_lock, flags);
+ list_for_each_entry(vport, &efc->vport_list, list_entry) {
+ if (vport->nport == nport) {
+ vport->wwnn = nport->wwnn;
+ vport->wwpn = nport->wwpn;
+ vport->tgt_data = nport->tgt_data;
+ vport->ini_data = nport->ini_data;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+}
+
+void
+__efc_nport_attached(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc *efc = nport->efc;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ case EFC_EVT_ENTER: {
+ struct efc_node *node;
+ unsigned long index;
+
+ efc_log_debug(efc,
+ "[%s] NPORT attached WWPN %016llX WWNN %016llX\n",
+ nport->display_name,
+ nport->wwpn, nport->wwnn);
+
+ xa_for_each(&nport->lookup, index, node) {
+ efc_node_update_display_name(node);
+ }
+
+ nport->tgt_id = nport->fc_id;
+
+ efc->tt.new_nport(efc, nport);
+
+ /*
+ * Update the vport (if its not the physical nport)
+ * parameters
+ */
+ if (nport->is_vport)
+ efc_vport_update_spec(nport);
+ break;
+ }
+
+ case EFC_EVT_EXIT:
+ efc_log_debug(efc,
+ "[%s] NPORT deattached WWPN %016llX WWNN %016llX\n",
+ nport->display_name,
+ nport->wwpn, nport->wwnn);
+
+ efc->tt.del_nport(efc, nport);
+ break;
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+
+void
+__efc_nport_wait_shutdown(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+ struct efc_domain *domain = nport->domain;
+ struct efc *efc = nport->efc;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ case EFC_EVT_NPORT_ALLOC_OK:
+ case EFC_EVT_NPORT_ALLOC_FAIL:
+ case EFC_EVT_NPORT_ATTACH_OK:
+ case EFC_EVT_NPORT_ATTACH_FAIL:
+ /* ignore these events - just wait for the all free event */
+ break;
+
+ case EFC_EVT_ALL_CHILD_NODES_FREE: {
+ /*
+ * Remove the nport from the domain's
+ * sparse vector lookup table
+ */
+ xa_erase(&domain->lookup, nport->fc_id);
+ efc_sm_transition(ctx, __efc_nport_wait_port_free, NULL);
+ if (efc_cmd_nport_free(efc, nport)) {
+ efc_log_err(nport->efc, "efc_hw_port_free failed\n");
+ /* Not much we can do, free the nport anyways */
+ efc_nport_free(nport);
+ }
+ break;
+ }
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+void
+__efc_nport_wait_port_free(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg)
+{
+ struct efc_nport *nport = ctx->app;
+
+ nport_sm_trace(nport);
+
+ switch (evt) {
+ case EFC_EVT_NPORT_ATTACH_OK:
+ /* Ignore as we are waiting for the free CB */
+ break;
+ case EFC_EVT_NPORT_FREE_OK: {
+ /* All done, free myself */
+ efc_nport_free(nport);
+ break;
+ }
+ default:
+ __efc_nport_common(__func__, ctx, evt, arg);
+ }
+}
+
+static int
+efc_vport_nport_alloc(struct efc_domain *domain, struct efc_vport_spec *vport)
+{
+ struct efc_nport *nport;
+
+ lockdep_assert_held(&domain->efc->lock);
+
+ nport = efc_nport_alloc(domain, vport->wwpn, vport->wwnn, vport->fc_id,
+ vport->enable_ini, vport->enable_tgt);
+ vport->nport = nport;
+ if (!nport)
+ return EFC_FAIL;
+
+ kref_get(&nport->ref);
+ nport->is_vport = true;
+ nport->tgt_data = vport->tgt_data;
+ nport->ini_data = vport->ini_data;
+
+ efc_sm_transition(&nport->sm, __efc_nport_vport_init, NULL);
+
+ return EFC_SUCCESS;
+}
+
+int
+efc_vport_start(struct efc_domain *domain)
+{
+ struct efc *efc = domain->efc;
+ struct efc_vport_spec *vport;
+ struct efc_vport_spec *next;
+ int rc = EFC_SUCCESS;
+ unsigned long flags = 0;
+
+ /* Use the vport spec to find the associated vports and start them */
+ spin_lock_irqsave(&efc->vport_lock, flags);
+ list_for_each_entry_safe(vport, next, &efc->vport_list, list_entry) {
+ if (!vport->nport) {
+ if (efc_vport_nport_alloc(domain, vport))
+ rc = EFC_FAIL;
+ }
+ }
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+
+ return rc;
+}
+
+int
+efc_nport_vport_new(struct efc_domain *domain, uint64_t wwpn, uint64_t wwnn,
+ u32 fc_id, bool ini, bool tgt, void *tgt_data,
+ void *ini_data)
+{
+ struct efc *efc = domain->efc;
+ struct efc_vport_spec *vport;
+ int rc = EFC_SUCCESS;
+ unsigned long flags = 0;
+
+ if (ini && domain->efc->enable_ini == 0) {
+ efc_log_debug(efc,
+ "driver initiator functionality not enabled\n");
+ return EFC_FAIL;
+ }
+
+ if (tgt && domain->efc->enable_tgt == 0) {
+ efc_log_debug(efc,
+ "driver target functionality not enabled\n");
+ return EFC_FAIL;
+ }
+
+ /*
+ * Create a vport spec if we need to recreate
+ * this vport after a link up event
+ */
+ vport = efc_vport_create_spec(domain->efc, wwnn, wwpn, fc_id, ini, tgt,
+ tgt_data, ini_data);
+ if (!vport) {
+ efc_log_err(efc, "failed to create vport object entry\n");
+ return EFC_FAIL;
+ }
+
+ spin_lock_irqsave(&efc->lock, flags);
+ rc = efc_vport_nport_alloc(domain, vport);
+ spin_unlock_irqrestore(&efc->lock, flags);
+
+ return rc;
+}
+
+int
+efc_nport_vport_del(struct efc *efc, struct efc_domain *domain,
+ u64 wwpn, uint64_t wwnn)
+{
+ struct efc_nport *nport;
+ int found = 0;
+ struct efc_vport_spec *vport;
+ struct efc_vport_spec *next;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&efc->vport_lock, flags);
+ /* walk the efc_vport_list and remove from there */
+ list_for_each_entry_safe(vport, next, &efc->vport_list, list_entry) {
+ if (vport->wwpn == wwpn && vport->wwnn == wwnn) {
+ list_del(&vport->list_entry);
+ kfree(vport);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+
+ if (!domain) {
+ /* No domain means no nport to look for */
+ return EFC_SUCCESS;
+ }
+
+ spin_lock_irqsave(&efc->lock, flags);
+ list_for_each_entry(nport, &domain->nport_list, list_entry) {
+ if (nport->wwpn == wwpn && nport->wwnn == wwnn) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found) {
+ kref_put(&nport->ref, nport->release);
+ /* Shutdown this NPORT */
+ efc_sm_post_event(&nport->sm, EFC_EVT_SHUTDOWN, NULL);
+ }
+ spin_unlock_irqrestore(&efc->lock, flags);
+ return EFC_SUCCESS;
+}
+
+void
+efc_vport_del_all(struct efc *efc)
+{
+ struct efc_vport_spec *vport;
+ struct efc_vport_spec *next;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&efc->vport_lock, flags);
+ list_for_each_entry_safe(vport, next, &efc->vport_list, list_entry) {
+ list_del(&vport->list_entry);
+ kfree(vport);
+ }
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+}
+
+struct efc_vport_spec *
+efc_vport_create_spec(struct efc *efc, uint64_t wwnn, uint64_t wwpn,
+ u32 fc_id, bool enable_ini,
+ bool enable_tgt, void *tgt_data, void *ini_data)
+{
+ struct efc_vport_spec *vport;
+ unsigned long flags = 0;
+
+ /*
+ * walk the efc_vport_list and return failure
+ * if a valid(vport with non zero WWPN and WWNN) vport entry
+ * is already created
+ */
+ spin_lock_irqsave(&efc->vport_lock, flags);
+ list_for_each_entry(vport, &efc->vport_list, list_entry) {
+ if ((wwpn && vport->wwpn == wwpn) &&
+ (wwnn && vport->wwnn == wwnn)) {
+ efc_log_err(efc,
+ "Failed: VPORT %016llX %016llX already allocated\n",
+ wwnn, wwpn);
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+ return NULL;
+ }
+ }
+
+ vport = kzalloc(sizeof(*vport), GFP_ATOMIC);
+ if (!vport) {
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+ return NULL;
+ }
+
+ vport->wwnn = wwnn;
+ vport->wwpn = wwpn;
+ vport->fc_id = fc_id;
+ vport->enable_tgt = enable_tgt;
+ vport->enable_ini = enable_ini;
+ vport->tgt_data = tgt_data;
+ vport->ini_data = ini_data;
+
+ INIT_LIST_HEAD(&vport->list_entry);
+ list_add_tail(&vport->list_entry, &efc->vport_list);
+ spin_unlock_irqrestore(&efc->vport_lock, flags);
+ return vport;
+}
diff --git a/drivers/scsi/elx/libefc/efc_nport.h b/drivers/scsi/elx/libefc/efc_nport.h
new file mode 100644
index 000000000000..b575ea205bbf
--- /dev/null
+++ b/drivers/scsi/elx/libefc/efc_nport.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021 Broadcom. All Rights Reserved. The term
+ * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
+ */
+
+/**
+ * EFC FC port (NPORT) exported declarations
+ *
+ */
+
+#ifndef __EFC_NPORT_H__
+#define __EFC_NPORT_H__
+
+struct efc_nport *
+efc_nport_find(struct efc_domain *domain, u32 d_id);
+struct efc_nport *
+efc_nport_alloc(struct efc_domain *domain, uint64_t wwpn, uint64_t wwnn,
+ u32 fc_id, bool enable_ini, bool enable_tgt);
+void
+efc_nport_free(struct efc_nport *nport);
+int
+efc_nport_attach(struct efc_nport *nport, u32 fc_id);
+
+void
+__efc_nport_allocated(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_wait_shutdown(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_wait_port_free(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_vport_init(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_vport_wait_alloc(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_vport_allocated(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+void
+__efc_nport_attached(struct efc_sm_ctx *ctx,
+ enum efc_sm_event evt, void *arg);
+
+int
+efc_vport_start(struct efc_domain *domain);
+
+#endif /* __EFC_NPORT_H__ */
--
2.26.2
