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87 lines
2.3 KiB
87 lines
2.3 KiB
15 years ago
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/*
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* Copyright(c) 2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Maintained at www.Open-FCoE.org
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*/
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/*
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* NPIV VN_Port helper functions for libfc
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*/
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#include <scsi/libfc.h>
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/**
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* fc_vport_create() - Create a new NPIV vport instance
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* @vport: fc_vport structure from scsi_transport_fc
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* @privsize: driver private data size to allocate along with the Scsi_Host
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*/
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struct fc_lport *libfc_vport_create(struct fc_vport *vport, int privsize)
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{
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struct Scsi_Host *shost = vport_to_shost(vport);
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struct fc_lport *n_port = shost_priv(shost);
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struct fc_lport *vn_port;
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vn_port = libfc_host_alloc(shost->hostt, privsize);
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if (!vn_port)
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goto err_out;
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if (fc_exch_mgr_list_clone(n_port, vn_port))
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goto err_put;
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vn_port->vport = vport;
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vport->dd_data = vn_port;
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mutex_lock(&n_port->lp_mutex);
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list_add_tail(&vn_port->list, &n_port->vports);
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mutex_unlock(&n_port->lp_mutex);
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return vn_port;
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err_put:
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scsi_host_put(vn_port->host);
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err_out:
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return NULL;
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}
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EXPORT_SYMBOL(libfc_vport_create);
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/**
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* fc_vport_id_lookup() - find NPIV lport that matches a given fabric ID
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* @n_port: Top level N_Port which may have multiple NPIV VN_Ports
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* @port_id: Fabric ID to find a match for
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*
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* Returns: matching lport pointer or NULL if there is no match
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*/
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struct fc_lport *fc_vport_id_lookup(struct fc_lport *n_port, u32 port_id)
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{
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struct fc_lport *lport = NULL;
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struct fc_lport *vn_port;
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if (fc_host_port_id(n_port->host) == port_id)
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return n_port;
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mutex_lock(&n_port->lp_mutex);
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list_for_each_entry(vn_port, &n_port->vports, list) {
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if (fc_host_port_id(vn_port->host) == port_id) {
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lport = vn_port;
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break;
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}
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}
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mutex_unlock(&n_port->lp_mutex);
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return lport;
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}
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