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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1d063c1729
The iscsi class currently does not support writable sysfs attrs for LLD sysfs settings. This patch converts the iscsi class and driver's session attrs to use the attribute container sysfs group and the sysfs group's is_visible callout to be able to support readable or writable sysfs attrs. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
780 lines
21 KiB
C
780 lines
21 KiB
C
/**
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* Copyright (C) 2005 - 2011 Emulex
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation. The full GNU General
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* Public License is included in this distribution in the file called COPYING.
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*
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* Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
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*
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* Contact Information:
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* linux-drivers@emulex.com
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*
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* Emulex
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* 3333 Susan Street
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* Costa Mesa, CA 92626
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*/
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#include <scsi/libiscsi.h>
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#include <scsi/scsi_transport_iscsi.h>
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#include <scsi/scsi_transport.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi.h>
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#include "be_iscsi.h"
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extern struct iscsi_transport beiscsi_iscsi_transport;
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/**
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* beiscsi_session_create - creates a new iscsi session
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* @cmds_max: max commands supported
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* @qdepth: max queue depth supported
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* @initial_cmdsn: initial iscsi CMDSN
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*/
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struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
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u16 cmds_max,
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u16 qdepth,
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u32 initial_cmdsn)
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{
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struct Scsi_Host *shost;
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struct beiscsi_endpoint *beiscsi_ep;
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struct iscsi_cls_session *cls_session;
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struct beiscsi_hba *phba;
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struct iscsi_session *sess;
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struct beiscsi_session *beiscsi_sess;
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struct beiscsi_io_task *io_task;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_session_create\n");
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if (!ep) {
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SE_DEBUG(DBG_LVL_1, "beiscsi_session_create: invalid ep\n");
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return NULL;
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}
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beiscsi_ep = ep->dd_data;
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phba = beiscsi_ep->phba;
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shost = phba->shost;
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if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
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shost_printk(KERN_ERR, shost, "Cannot handle %d cmds."
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"Max cmds per session supported is %d. Using %d. "
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"\n", cmds_max,
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beiscsi_ep->phba->params.wrbs_per_cxn,
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beiscsi_ep->phba->params.wrbs_per_cxn);
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cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
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}
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cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
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shost, cmds_max,
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sizeof(*beiscsi_sess),
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sizeof(*io_task),
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initial_cmdsn, ISCSI_MAX_TARGET);
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if (!cls_session)
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return NULL;
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sess = cls_session->dd_data;
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beiscsi_sess = sess->dd_data;
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beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool",
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phba->pcidev,
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sizeof(struct be_cmd_bhs),
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64, 0);
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if (!beiscsi_sess->bhs_pool)
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goto destroy_sess;
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return cls_session;
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destroy_sess:
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iscsi_session_teardown(cls_session);
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return NULL;
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}
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/**
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* beiscsi_session_destroy - destroys iscsi session
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* @cls_session: pointer to iscsi cls session
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*
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* Destroys iSCSI session instance and releases
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* resources allocated for it.
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*/
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void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
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{
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struct iscsi_session *sess = cls_session->dd_data;
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struct beiscsi_session *beiscsi_sess = sess->dd_data;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_session_destroy\n");
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pci_pool_destroy(beiscsi_sess->bhs_pool);
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iscsi_session_teardown(cls_session);
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}
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/**
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* beiscsi_conn_create - create an instance of iscsi connection
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* @cls_session: ptr to iscsi_cls_session
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* @cid: iscsi cid
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*/
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struct iscsi_cls_conn *
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beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
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{
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struct beiscsi_hba *phba;
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struct Scsi_Host *shost;
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struct iscsi_cls_conn *cls_conn;
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struct beiscsi_conn *beiscsi_conn;
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struct iscsi_conn *conn;
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struct iscsi_session *sess;
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struct beiscsi_session *beiscsi_sess;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_create ,cid"
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"from iscsi layer=%d\n", cid);
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shost = iscsi_session_to_shost(cls_session);
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phba = iscsi_host_priv(shost);
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cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
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if (!cls_conn)
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return NULL;
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conn = cls_conn->dd_data;
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beiscsi_conn = conn->dd_data;
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beiscsi_conn->ep = NULL;
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beiscsi_conn->phba = phba;
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beiscsi_conn->conn = conn;
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sess = cls_session->dd_data;
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beiscsi_sess = sess->dd_data;
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beiscsi_conn->beiscsi_sess = beiscsi_sess;
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return cls_conn;
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}
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/**
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* beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
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* @beiscsi_conn: The pointer to beiscsi_conn structure
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* @phba: The phba instance
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* @cid: The cid to free
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*/
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static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
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struct beiscsi_conn *beiscsi_conn,
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unsigned int cid)
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{
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if (phba->conn_table[cid]) {
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SE_DEBUG(DBG_LVL_1,
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"Connection table already occupied. Detected clash\n");
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return -EINVAL;
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} else {
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SE_DEBUG(DBG_LVL_8, "phba->conn_table[%d]=%p(beiscsi_conn)\n",
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cid, beiscsi_conn);
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phba->conn_table[cid] = beiscsi_conn;
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}
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return 0;
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}
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/**
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* beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
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* @cls_session: pointer to iscsi cls session
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* @cls_conn: pointer to iscsi cls conn
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* @transport_fd: EP handle(64 bit)
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*
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* This function binds the TCP Conn with iSCSI Connection and Session.
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*/
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int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
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struct iscsi_cls_conn *cls_conn,
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u64 transport_fd, int is_leading)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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struct beiscsi_conn *beiscsi_conn = conn->dd_data;
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struct Scsi_Host *shost =
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(struct Scsi_Host *)iscsi_session_to_shost(cls_session);
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struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
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struct beiscsi_endpoint *beiscsi_ep;
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struct iscsi_endpoint *ep;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_bind\n");
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ep = iscsi_lookup_endpoint(transport_fd);
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if (!ep)
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return -EINVAL;
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beiscsi_ep = ep->dd_data;
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if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
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return -EINVAL;
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if (beiscsi_ep->phba != phba) {
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SE_DEBUG(DBG_LVL_8,
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"beiscsi_ep->hba=%p not equal to phba=%p\n",
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beiscsi_ep->phba, phba);
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return -EEXIST;
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}
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beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
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beiscsi_conn->ep = beiscsi_ep;
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beiscsi_ep->conn = beiscsi_conn;
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SE_DEBUG(DBG_LVL_8, "beiscsi_conn=%p conn=%p ep_cid=%d\n",
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beiscsi_conn, conn, beiscsi_ep->ep_cid);
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return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
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}
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/**
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* beiscsi_ep_get_param - get the iscsi parameter
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* @ep: pointer to iscsi ep
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* @param: parameter type identifier
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* @buf: buffer pointer
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*
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* returns iscsi parameter
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*/
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int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
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enum iscsi_param param, char *buf)
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{
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struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
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int len = 0;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_param, param= %d\n", param);
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switch (param) {
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case ISCSI_PARAM_CONN_PORT:
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len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
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break;
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case ISCSI_PARAM_CONN_ADDRESS:
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if (beiscsi_ep->ip_type == BE2_IPV4)
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len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
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else
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len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
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break;
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default:
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return -ENOSYS;
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}
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return len;
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}
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int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
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enum iscsi_param param, char *buf, int buflen)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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struct iscsi_session *session = conn->session;
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int ret;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_set_param, param= %d\n", param);
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ret = iscsi_set_param(cls_conn, param, buf, buflen);
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if (ret)
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return ret;
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/*
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* If userspace tried to set the value to higher than we can
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* support override here.
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*/
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switch (param) {
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case ISCSI_PARAM_FIRST_BURST:
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if (session->first_burst > 8192)
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session->first_burst = 8192;
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break;
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case ISCSI_PARAM_MAX_RECV_DLENGTH:
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if (conn->max_recv_dlength > 65536)
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conn->max_recv_dlength = 65536;
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break;
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case ISCSI_PARAM_MAX_BURST:
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if (session->max_burst > 262144)
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session->max_burst = 262144;
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break;
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case ISCSI_PARAM_MAX_XMIT_DLENGTH:
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if ((conn->max_xmit_dlength > 65536) ||
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(conn->max_xmit_dlength == 0))
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conn->max_xmit_dlength = 65536;
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default:
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return 0;
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}
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return 0;
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}
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/**
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* beiscsi_get_host_param - get the iscsi parameter
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* @shost: pointer to scsi_host structure
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* @param: parameter type identifier
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* @buf: buffer pointer
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*
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* returns host parameter
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*/
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int beiscsi_get_host_param(struct Scsi_Host *shost,
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enum iscsi_host_param param, char *buf)
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{
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struct beiscsi_hba *phba = (struct beiscsi_hba *)iscsi_host_priv(shost);
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int status = 0;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_get_host_param, param= %d\n", param);
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switch (param) {
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case ISCSI_HOST_PARAM_HWADDRESS:
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status = beiscsi_get_macaddr(buf, phba);
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if (status < 0) {
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SE_DEBUG(DBG_LVL_1, "beiscsi_get_macaddr Failed\n");
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return status;
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}
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break;
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default:
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return iscsi_host_get_param(shost, param, buf);
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}
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return status;
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}
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int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
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{
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struct be_cmd_resp_get_mac_addr *resp;
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struct be_mcc_wrb *wrb;
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unsigned int tag, wrb_num;
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unsigned short status, extd_status;
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struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
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int rc;
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if (phba->read_mac_address)
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return sysfs_format_mac(buf, phba->mac_address,
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ETH_ALEN);
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tag = be_cmd_get_mac_addr(phba);
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if (!tag) {
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SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
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return -EBUSY;
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} else
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wait_event_interruptible(phba->ctrl.mcc_wait[tag],
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phba->ctrl.mcc_numtag[tag]);
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wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
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extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
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status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
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if (status || extd_status) {
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SE_DEBUG(DBG_LVL_1, "Failed to get be_cmd_get_mac_addr"
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" status = %d extd_status = %d\n",
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status, extd_status);
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free_mcc_tag(&phba->ctrl, tag);
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return -EAGAIN;
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}
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wrb = queue_get_wrb(mccq, wrb_num);
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free_mcc_tag(&phba->ctrl, tag);
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resp = embedded_payload(wrb);
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memcpy(phba->mac_address, resp->mac_address, ETH_ALEN);
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rc = sysfs_format_mac(buf, phba->mac_address,
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ETH_ALEN);
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phba->read_mac_address = 1;
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return rc;
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}
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/**
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* beiscsi_conn_get_stats - get the iscsi stats
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* @cls_conn: pointer to iscsi cls conn
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* @stats: pointer to iscsi_stats structure
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*
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* returns iscsi stats
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*/
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void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
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struct iscsi_stats *stats)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_get_stats\n");
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stats->txdata_octets = conn->txdata_octets;
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stats->rxdata_octets = conn->rxdata_octets;
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stats->dataout_pdus = conn->dataout_pdus_cnt;
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stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
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stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
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stats->datain_pdus = conn->datain_pdus_cnt;
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stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
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stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
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stats->r2t_pdus = conn->r2t_pdus_cnt;
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stats->digest_err = 0;
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stats->timeout_err = 0;
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stats->custom_length = 0;
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strcpy(stats->custom[0].desc, "eh_abort_cnt");
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stats->custom[0].value = conn->eh_abort_cnt;
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}
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/**
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* beiscsi_set_params_for_offld - get the parameters for offload
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* @beiscsi_conn: pointer to beiscsi_conn
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* @params: pointer to offload_params structure
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*/
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static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
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struct beiscsi_offload_params *params)
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{
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struct iscsi_conn *conn = beiscsi_conn->conn;
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struct iscsi_session *session = conn->session;
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
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params, session->max_burst);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params,
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max_send_data_segment_length, params,
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conn->max_xmit_dlength);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
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params, session->first_burst);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
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session->erl);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
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conn->datadgst_en);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
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conn->hdrdgst_en);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
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session->initial_r2t_en);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
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session->imm_data_en);
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AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
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(conn->exp_statsn - 1));
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}
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/**
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* beiscsi_conn_start - offload of session to chip
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* @cls_conn: pointer to beiscsi_conn
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*/
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int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
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{
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struct iscsi_conn *conn = cls_conn->dd_data;
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struct beiscsi_conn *beiscsi_conn = conn->dd_data;
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struct beiscsi_endpoint *beiscsi_ep;
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struct beiscsi_offload_params params;
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SE_DEBUG(DBG_LVL_8, "In beiscsi_conn_start\n");
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memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
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beiscsi_ep = beiscsi_conn->ep;
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if (!beiscsi_ep)
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SE_DEBUG(DBG_LVL_1, "In beiscsi_conn_start , no beiscsi_ep\n");
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beiscsi_conn->login_in_progress = 0;
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beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
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beiscsi_offload_connection(beiscsi_conn, ¶ms);
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iscsi_conn_start(cls_conn);
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return 0;
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}
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/**
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* beiscsi_get_cid - Allocate a cid
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* @phba: The phba instance
|
|
*/
|
|
static int beiscsi_get_cid(struct beiscsi_hba *phba)
|
|
{
|
|
unsigned short cid = 0xFFFF;
|
|
|
|
if (!phba->avlbl_cids)
|
|
return cid;
|
|
|
|
cid = phba->cid_array[phba->cid_alloc++];
|
|
if (phba->cid_alloc == phba->params.cxns_per_ctrl)
|
|
phba->cid_alloc = 0;
|
|
phba->avlbl_cids--;
|
|
return cid;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_put_cid - Free the cid
|
|
* @phba: The phba for which the cid is being freed
|
|
* @cid: The cid to free
|
|
*/
|
|
static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
|
|
{
|
|
phba->avlbl_cids++;
|
|
phba->cid_array[phba->cid_free++] = cid;
|
|
if (phba->cid_free == phba->params.cxns_per_ctrl)
|
|
phba->cid_free = 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_free_ep - free endpoint
|
|
* @ep: pointer to iscsi endpoint structure
|
|
*/
|
|
static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
|
|
{
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
beiscsi_ep->phba = NULL;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_open_conn - Ask FW to open a TCP connection
|
|
* @ep: endpoint to be used
|
|
* @src_addr: The source IP address
|
|
* @dst_addr: The Destination IP address
|
|
*
|
|
* Asks the FW to open a TCP connection
|
|
*/
|
|
static int beiscsi_open_conn(struct iscsi_endpoint *ep,
|
|
struct sockaddr *src_addr,
|
|
struct sockaddr *dst_addr, int non_blocking)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
|
|
struct be_mcc_wrb *wrb;
|
|
struct tcp_connect_and_offload_out *ptcpcnct_out;
|
|
unsigned short status, extd_status;
|
|
struct be_dma_mem nonemb_cmd;
|
|
unsigned int tag, wrb_num;
|
|
int ret = -ENOMEM;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n");
|
|
beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
|
|
if (beiscsi_ep->ep_cid == 0xFFFF) {
|
|
SE_DEBUG(DBG_LVL_1, "No free cid available\n");
|
|
return ret;
|
|
}
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn, ep_cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
phba->ep_array[beiscsi_ep->ep_cid -
|
|
phba->fw_config.iscsi_cid_start] = ep;
|
|
if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start +
|
|
phba->params.cxns_per_ctrl * 2)) {
|
|
SE_DEBUG(DBG_LVL_1, "Failed in allocate iscsi cid\n");
|
|
goto free_ep;
|
|
}
|
|
|
|
beiscsi_ep->cid_vld = 0;
|
|
nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
|
|
sizeof(struct tcp_connect_and_offload_in),
|
|
&nonemb_cmd.dma);
|
|
if (nonemb_cmd.va == NULL) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"Failed to allocate memory for mgmt_open_connection"
|
|
"\n");
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
return -ENOMEM;
|
|
}
|
|
nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
|
|
memset(nonemb_cmd.va, 0, nonemb_cmd.size);
|
|
tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"mgmt_open_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
return -EAGAIN;
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
}
|
|
wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
|
|
extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
|
|
status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
|
|
if (status || extd_status) {
|
|
SE_DEBUG(DBG_LVL_1, "mgmt_open_connection Failed"
|
|
" status = %d extd_status = %d\n",
|
|
status, extd_status);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
goto free_ep;
|
|
} else {
|
|
wrb = queue_get_wrb(mccq, wrb_num);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
|
|
ptcpcnct_out = embedded_payload(wrb);
|
|
beiscsi_ep = ep->dd_data;
|
|
beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
|
|
beiscsi_ep->cid_vld = 1;
|
|
SE_DEBUG(DBG_LVL_8, "mgmt_open_connection Success\n");
|
|
}
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
return 0;
|
|
|
|
free_ep:
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
return -EBUSY;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_connect - Ask chip to create TCP Conn
|
|
* @scsi_host: Pointer to scsi_host structure
|
|
* @dst_addr: The IP address of Target
|
|
* @non_blocking: blocking or non-blocking call
|
|
*
|
|
* This routines first asks chip to create a connection and then allocates an EP
|
|
*/
|
|
struct iscsi_endpoint *
|
|
beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
|
|
int non_blocking)
|
|
{
|
|
struct beiscsi_hba *phba;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct iscsi_endpoint *ep;
|
|
int ret;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_connect\n");
|
|
if (shost)
|
|
phba = iscsi_host_priv(shost);
|
|
else {
|
|
ret = -ENXIO;
|
|
SE_DEBUG(DBG_LVL_1, "shost is NULL\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
if (phba->state != BE_ADAPTER_UP) {
|
|
ret = -EBUSY;
|
|
SE_DEBUG(DBG_LVL_1, "The Adapter state is Not UP\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
|
|
if (!ep) {
|
|
ret = -ENOMEM;
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
beiscsi_ep->phba = phba;
|
|
beiscsi_ep->openiscsi_ep = ep;
|
|
ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
|
|
if (ret) {
|
|
SE_DEBUG(DBG_LVL_1, "Failed in beiscsi_open_conn\n");
|
|
goto free_ep;
|
|
}
|
|
|
|
return ep;
|
|
|
|
free_ep:
|
|
iscsi_destroy_endpoint(ep);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_poll - Poll to see if connection is established
|
|
* @ep: endpoint to be used
|
|
* @timeout_ms: timeout specified in millisecs
|
|
*
|
|
* Poll to see if TCP connection established
|
|
*/
|
|
int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_poll\n");
|
|
if (beiscsi_ep->cid_vld == 1)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_close_conn - Upload the connection
|
|
* @ep: The iscsi endpoint
|
|
* @flag: The type of connection closure
|
|
*/
|
|
static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag)
|
|
{
|
|
int ret = 0;
|
|
unsigned int tag;
|
|
struct beiscsi_hba *phba = beiscsi_ep->phba;
|
|
|
|
tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x\n",
|
|
beiscsi_ep->ep_cid);
|
|
ret = -EAGAIN;
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
|
|
* @phba: The phba instance
|
|
* @cid: The cid to free
|
|
*/
|
|
static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
|
|
unsigned int cid)
|
|
{
|
|
if (phba->conn_table[cid])
|
|
phba->conn_table[cid] = NULL;
|
|
else {
|
|
SE_DEBUG(DBG_LVL_8, "Connection table Not occupied.\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_disconnect - Tears down the TCP connection
|
|
* @ep: endpoint to be used
|
|
*
|
|
* Tears down the TCP connection
|
|
*/
|
|
void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
|
|
{
|
|
struct beiscsi_conn *beiscsi_conn;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct beiscsi_hba *phba;
|
|
unsigned int tag;
|
|
unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
phba = beiscsi_ep->phba;
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect for ep_cid = %d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
if (!beiscsi_ep->conn) {
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect, no "
|
|
"beiscsi_ep\n");
|
|
return;
|
|
}
|
|
beiscsi_conn = beiscsi_ep->conn;
|
|
iscsi_suspend_queue(beiscsi_conn->conn);
|
|
|
|
SE_DEBUG(DBG_LVL_8, "In beiscsi_ep_disconnect ep_cid = %d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
|
|
beiscsi_ep->ep_cid, 1,
|
|
savecfg_flag);
|
|
if (!tag) {
|
|
SE_DEBUG(DBG_LVL_1,
|
|
"mgmt_invalidate_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
} else {
|
|
wait_event_interruptible(phba->ctrl.mcc_wait[tag],
|
|
phba->ctrl.mcc_numtag[tag]);
|
|
free_mcc_tag(&phba->ctrl, tag);
|
|
}
|
|
|
|
beiscsi_close_conn(beiscsi_ep, CONNECTION_UPLOAD_GRACEFUL);
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
|
|
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
|
|
}
|
|
|
|
mode_t be2iscsi_attr_is_visible(int param_type, int param)
|
|
{
|
|
switch (param_type) {
|
|
case ISCSI_PARAM:
|
|
switch (param) {
|
|
case ISCSI_PARAM_MAX_RECV_DLENGTH:
|
|
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
|
|
case ISCSI_PARAM_HDRDGST_EN:
|
|
case ISCSI_PARAM_DATADGST_EN:
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
case ISCSI_PARAM_EXP_STATSN:
|
|
case ISCSI_PARAM_PERSISTENT_ADDRESS:
|
|
case ISCSI_PARAM_PERSISTENT_PORT:
|
|
case ISCSI_PARAM_PING_TMO:
|
|
case ISCSI_PARAM_RECV_TMO:
|
|
case ISCSI_PARAM_INITIAL_R2T_EN:
|
|
case ISCSI_PARAM_MAX_R2T:
|
|
case ISCSI_PARAM_IMM_DATA_EN:
|
|
case ISCSI_PARAM_FIRST_BURST:
|
|
case ISCSI_PARAM_MAX_BURST:
|
|
case ISCSI_PARAM_PDU_INORDER_EN:
|
|
case ISCSI_PARAM_DATASEQ_INORDER_EN:
|
|
case ISCSI_PARAM_ERL:
|
|
case ISCSI_PARAM_TARGET_NAME:
|
|
case ISCSI_PARAM_TPGT:
|
|
case ISCSI_PARAM_USERNAME:
|
|
case ISCSI_PARAM_PASSWORD:
|
|
case ISCSI_PARAM_USERNAME_IN:
|
|
case ISCSI_PARAM_PASSWORD_IN:
|
|
case ISCSI_PARAM_FAST_ABORT:
|
|
case ISCSI_PARAM_ABORT_TMO:
|
|
case ISCSI_PARAM_LU_RESET_TMO:
|
|
case ISCSI_PARAM_IFACE_NAME:
|
|
case ISCSI_PARAM_INITIATOR_NAME:
|
|
return S_IRUGO;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|