1432 lines
38 KiB
C
1432 lines
38 KiB
C
/**
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* Copyright (C) 2005 - 2016 Broadcom
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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@broadcom.com)
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*
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* Contact Information:
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* linux-drivers@broadcom.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_netlink.h>
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#include <net/netlink.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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if (!ep) {
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pr_err("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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if (!beiscsi_hba_is_online(phba)) {
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beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
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"BS_%d : HBA in error 0x%lx\n", phba->state);
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return NULL;
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}
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beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
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"BS_%d : In beiscsi_session_create\n");
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if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : 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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shost = phba->shost;
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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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printk(KERN_INFO "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_session_fail(): Closing session with appropriate error
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* @cls_session: ptr to session
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**/
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void beiscsi_session_fail(struct iscsi_cls_session *cls_session)
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{
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iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED);
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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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shost = iscsi_session_to_shost(cls_session);
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phba = iscsi_host_priv(shost);
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beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
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"BS_%d : In beiscsi_conn_create ,cid"
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"from iscsi layer=%d\n", cid);
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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_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 = iscsi_session_to_shost(cls_session);
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struct beiscsi_hba *phba = iscsi_host_priv(shost);
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struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
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struct hwi_wrb_context *pwrb_context;
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struct beiscsi_endpoint *beiscsi_ep;
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struct iscsi_endpoint *ep;
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uint16_t cri_index;
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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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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : 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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cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
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if (phba->conn_table[cri_index]) {
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if (beiscsi_conn != phba->conn_table[cri_index] ||
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beiscsi_ep != phba->conn_table[cri_index]->ep) {
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__beiscsi_log(phba, KERN_ERR,
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"BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n",
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cri_index,
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beiscsi_ep->ep_cid,
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beiscsi_conn,
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phba->conn_table[cri_index]);
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return -EINVAL;
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}
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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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/**
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* Each connection is associated with a WRBQ kept in wrb_context.
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* Store doorbell offset for transmit path.
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*/
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pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
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beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
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beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
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"BS_%d : cid %d phba->conn_table[%u]=%p\n",
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beiscsi_ep->ep_cid, cri_index, beiscsi_conn);
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phba->conn_table[cri_index] = beiscsi_conn;
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return 0;
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}
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static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba)
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{
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if (phba->ipv4_iface)
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return 0;
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phba->ipv4_iface = iscsi_create_iface(phba->shost,
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&beiscsi_iscsi_transport,
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ISCSI_IFACE_TYPE_IPV4,
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0, 0);
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if (!phba->ipv4_iface) {
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : Could not "
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"create default IPv4 address.\n");
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return -ENODEV;
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}
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return 0;
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}
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static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba)
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{
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if (phba->ipv6_iface)
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return 0;
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phba->ipv6_iface = iscsi_create_iface(phba->shost,
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&beiscsi_iscsi_transport,
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ISCSI_IFACE_TYPE_IPV6,
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0, 0);
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if (!phba->ipv6_iface) {
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : Could not "
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"create default IPv6 address.\n");
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return -ENODEV;
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}
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return 0;
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}
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void beiscsi_iface_create_default(struct beiscsi_hba *phba)
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{
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struct be_cmd_get_if_info_resp *if_info;
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if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) {
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beiscsi_iface_create_ipv4(phba);
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kfree(if_info);
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}
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if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) {
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beiscsi_iface_create_ipv6(phba);
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kfree(if_info);
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}
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}
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void beiscsi_iface_destroy_default(struct beiscsi_hba *phba)
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{
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if (phba->ipv6_iface) {
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iscsi_destroy_iface(phba->ipv6_iface);
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phba->ipv6_iface = NULL;
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}
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if (phba->ipv4_iface) {
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iscsi_destroy_iface(phba->ipv4_iface);
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phba->ipv4_iface = NULL;
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}
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}
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/**
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* beiscsi_set_vlan_tag()- Set the VLAN TAG
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* @shost: Scsi Host for the driver instance
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* @iface_param: Interface paramters
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*
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* Set the VLAN TAG for the adapter or disable
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* the VLAN config
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*
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* returns
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* Success: 0
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* Failure: Non-Zero Value
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**/
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static int
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beiscsi_iface_config_vlan(struct Scsi_Host *shost,
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struct iscsi_iface_param_info *iface_param)
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{
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struct beiscsi_hba *phba = iscsi_host_priv(shost);
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int ret = -EPERM;
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switch (iface_param->param) {
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case ISCSI_NET_PARAM_VLAN_ENABLED:
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ret = 0;
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if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
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ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE);
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break;
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case ISCSI_NET_PARAM_VLAN_TAG:
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ret = beiscsi_if_set_vlan(phba,
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*((uint16_t *)iface_param->value));
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break;
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}
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return ret;
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}
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static int
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beiscsi_iface_config_ipv4(struct Scsi_Host *shost,
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struct iscsi_iface_param_info *info,
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void *data, uint32_t dt_len)
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{
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struct beiscsi_hba *phba = iscsi_host_priv(shost);
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u8 *ip = NULL, *subnet = NULL, *gw;
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struct nlattr *nla;
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int ret = -EPERM;
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/* Check the param */
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switch (info->param) {
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case ISCSI_NET_PARAM_IFACE_ENABLE:
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if (info->value[0] == ISCSI_IFACE_ENABLE)
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ret = beiscsi_iface_create_ipv4(phba);
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else {
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iscsi_destroy_iface(phba->ipv4_iface);
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phba->ipv4_iface = NULL;
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}
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break;
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case ISCSI_NET_PARAM_IPV4_GW:
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gw = info->value;
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ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw);
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break;
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case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
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if (info->value[0] == ISCSI_BOOTPROTO_DHCP)
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ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4);
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else if (info->value[0] == ISCSI_BOOTPROTO_STATIC)
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/* release DHCP IP address */
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ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
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NULL, NULL);
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else
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : Invalid BOOTPROTO: %d\n",
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info->value[0]);
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break;
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case ISCSI_NET_PARAM_IPV4_ADDR:
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ip = info->value;
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nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
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if (nla) {
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info = nla_data(nla);
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subnet = info->value;
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}
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ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
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ip, subnet);
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break;
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case ISCSI_NET_PARAM_IPV4_SUBNET:
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/*
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* OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP
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* and subnet both. Find IP to be applied for this subnet.
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*/
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subnet = info->value;
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nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
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if (nla) {
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info = nla_data(nla);
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ip = info->value;
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}
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ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4,
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ip, subnet);
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break;
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}
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return ret;
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}
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static int
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beiscsi_iface_config_ipv6(struct Scsi_Host *shost,
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struct iscsi_iface_param_info *iface_param,
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void *data, uint32_t dt_len)
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{
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struct beiscsi_hba *phba = iscsi_host_priv(shost);
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int ret = -EPERM;
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switch (iface_param->param) {
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case ISCSI_NET_PARAM_IFACE_ENABLE:
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if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
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ret = beiscsi_iface_create_ipv6(phba);
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else {
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iscsi_destroy_iface(phba->ipv6_iface);
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phba->ipv6_iface = NULL;
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}
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break;
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case ISCSI_NET_PARAM_IPV6_ADDR:
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ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6,
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iface_param->value, NULL);
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break;
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}
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return ret;
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}
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int beiscsi_iface_set_param(struct Scsi_Host *shost,
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void *data, uint32_t dt_len)
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{
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struct iscsi_iface_param_info *iface_param = NULL;
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struct beiscsi_hba *phba = iscsi_host_priv(shost);
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struct nlattr *attrib;
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uint32_t rm_len = dt_len;
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int ret;
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if (!beiscsi_hba_is_online(phba)) {
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beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
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"BS_%d : HBA in error 0x%lx\n", phba->state);
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return -EBUSY;
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}
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|
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/* update interface_handle */
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ret = beiscsi_if_get_handle(phba);
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if (ret) {
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : Getting Interface Handle Failed\n");
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return ret;
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}
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nla_for_each_attr(attrib, data, dt_len, rm_len) {
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iface_param = nla_data(attrib);
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|
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if (iface_param->param_type != ISCSI_NET_PARAM)
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continue;
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|
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/*
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* BE2ISCSI only supports 1 interface
|
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*/
|
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if (iface_param->iface_num) {
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beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
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"BS_%d : Invalid iface_num %d."
|
|
"Only iface_num 0 is supported.\n",
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iface_param->iface_num);
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|
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return -EINVAL;
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}
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|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : %s.0 set param %d",
|
|
(iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ?
|
|
"ipv4" : "ipv6", iface_param->param);
|
|
|
|
ret = -EPERM;
|
|
switch (iface_param->param) {
|
|
case ISCSI_NET_PARAM_VLAN_ENABLED:
|
|
case ISCSI_NET_PARAM_VLAN_TAG:
|
|
ret = beiscsi_iface_config_vlan(shost, iface_param);
|
|
break;
|
|
default:
|
|
switch (iface_param->iface_type) {
|
|
case ISCSI_IFACE_TYPE_IPV4:
|
|
ret = beiscsi_iface_config_ipv4(shost,
|
|
iface_param,
|
|
data, dt_len);
|
|
break;
|
|
case ISCSI_IFACE_TYPE_IPV6:
|
|
ret = beiscsi_iface_config_ipv6(shost,
|
|
iface_param,
|
|
data, dt_len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret == -EPERM) {
|
|
__beiscsi_log(phba, KERN_ERR,
|
|
"BS_%d : %s.0 set param %d not permitted",
|
|
(iface_param->iface_type ==
|
|
ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6",
|
|
iface_param->param);
|
|
ret = 0;
|
|
}
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __beiscsi_iface_get_param(struct beiscsi_hba *phba,
|
|
struct iscsi_iface *iface,
|
|
int param, char *buf)
|
|
{
|
|
struct be_cmd_get_if_info_resp *if_info;
|
|
int len, ip_type = BEISCSI_IP_TYPE_V4;
|
|
|
|
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
|
|
ip_type = BEISCSI_IP_TYPE_V6;
|
|
|
|
len = beiscsi_if_get_info(phba, ip_type, &if_info);
|
|
if (len)
|
|
return len;
|
|
|
|
switch (param) {
|
|
case ISCSI_NET_PARAM_IPV4_ADDR:
|
|
len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
|
|
break;
|
|
case ISCSI_NET_PARAM_IPV6_ADDR:
|
|
len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
|
|
break;
|
|
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
|
|
if (!if_info->dhcp_state)
|
|
len = sprintf(buf, "static\n");
|
|
else
|
|
len = sprintf(buf, "dhcp\n");
|
|
break;
|
|
case ISCSI_NET_PARAM_IPV4_SUBNET:
|
|
len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
|
|
break;
|
|
case ISCSI_NET_PARAM_VLAN_ENABLED:
|
|
len = sprintf(buf, "%s\n",
|
|
(if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ?
|
|
"disable" : "enable");
|
|
break;
|
|
case ISCSI_NET_PARAM_VLAN_ID:
|
|
if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
|
|
len = -EINVAL;
|
|
else
|
|
len = sprintf(buf, "%d\n",
|
|
(if_info->vlan_priority &
|
|
ISCSI_MAX_VLAN_ID));
|
|
break;
|
|
case ISCSI_NET_PARAM_VLAN_PRIORITY:
|
|
if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
|
|
len = -EINVAL;
|
|
else
|
|
len = sprintf(buf, "%d\n",
|
|
((if_info->vlan_priority >> 13) &
|
|
ISCSI_MAX_VLAN_PRIORITY));
|
|
break;
|
|
default:
|
|
WARN_ON(1);
|
|
}
|
|
|
|
kfree(if_info);
|
|
return len;
|
|
}
|
|
|
|
int beiscsi_iface_get_param(struct iscsi_iface *iface,
|
|
enum iscsi_param_type param_type,
|
|
int param, char *buf)
|
|
{
|
|
struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
|
|
struct beiscsi_hba *phba = iscsi_host_priv(shost);
|
|
struct be_cmd_get_def_gateway_resp gateway;
|
|
int len = -EPERM;
|
|
|
|
if (param_type != ISCSI_NET_PARAM)
|
|
return 0;
|
|
if (!beiscsi_hba_is_online(phba)) {
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : HBA in error 0x%lx\n", phba->state);
|
|
return -EBUSY;
|
|
}
|
|
|
|
switch (param) {
|
|
case ISCSI_NET_PARAM_IPV4_ADDR:
|
|
case ISCSI_NET_PARAM_IPV4_SUBNET:
|
|
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
|
|
case ISCSI_NET_PARAM_IPV6_ADDR:
|
|
case ISCSI_NET_PARAM_VLAN_ENABLED:
|
|
case ISCSI_NET_PARAM_VLAN_ID:
|
|
case ISCSI_NET_PARAM_VLAN_PRIORITY:
|
|
len = __beiscsi_iface_get_param(phba, iface, param, buf);
|
|
break;
|
|
case ISCSI_NET_PARAM_IFACE_ENABLE:
|
|
if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
|
|
len = sprintf(buf, "%s\n",
|
|
phba->ipv4_iface ? "enable" : "disable");
|
|
else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
|
|
len = sprintf(buf, "%s\n",
|
|
phba->ipv6_iface ? "enable" : "disable");
|
|
break;
|
|
case ISCSI_NET_PARAM_IPV4_GW:
|
|
memset(&gateway, 0, sizeof(gateway));
|
|
len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway);
|
|
if (!len)
|
|
len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
|
|
break;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_ep_get_param - get the iscsi parameter
|
|
* @ep: pointer to iscsi ep
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*
|
|
* returns iscsi parameter
|
|
*/
|
|
int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
|
|
enum iscsi_param param, char *buf)
|
|
{
|
|
struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
|
|
int len;
|
|
|
|
beiscsi_log(beiscsi_ep->phba, KERN_INFO,
|
|
BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_ep_get_param,"
|
|
" param= %d\n", param);
|
|
|
|
switch (param) {
|
|
case ISCSI_PARAM_CONN_PORT:
|
|
len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
|
|
break;
|
|
case ISCSI_PARAM_CONN_ADDRESS:
|
|
if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4)
|
|
len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
|
|
else
|
|
len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
|
|
break;
|
|
default:
|
|
len = -EPERM;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
|
|
enum iscsi_param param, char *buf, int buflen)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct iscsi_session *session = conn->session;
|
|
struct beiscsi_hba *phba = NULL;
|
|
int ret;
|
|
|
|
phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_conn_set_param,"
|
|
" param= %d\n", param);
|
|
|
|
ret = iscsi_set_param(cls_conn, param, buf, buflen);
|
|
if (ret)
|
|
return ret;
|
|
/*
|
|
* If userspace tried to set the value to higher than we can
|
|
* support override here.
|
|
*/
|
|
switch (param) {
|
|
case ISCSI_PARAM_FIRST_BURST:
|
|
if (session->first_burst > 8192)
|
|
session->first_burst = 8192;
|
|
break;
|
|
case ISCSI_PARAM_MAX_RECV_DLENGTH:
|
|
if (conn->max_recv_dlength > 65536)
|
|
conn->max_recv_dlength = 65536;
|
|
break;
|
|
case ISCSI_PARAM_MAX_BURST:
|
|
if (session->max_burst > 262144)
|
|
session->max_burst = 262144;
|
|
break;
|
|
case ISCSI_PARAM_MAX_XMIT_DLENGTH:
|
|
if (conn->max_xmit_dlength > 65536)
|
|
conn->max_xmit_dlength = 65536;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_initname - Read Initiator Name from flash
|
|
* @buf: buffer bointer
|
|
* @phba: The device priv structure instance
|
|
*
|
|
* returns number of bytes
|
|
*/
|
|
static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
|
|
{
|
|
int rc;
|
|
unsigned int tag;
|
|
struct be_mcc_wrb *wrb;
|
|
struct be_cmd_hba_name *resp;
|
|
|
|
tag = be_cmd_get_initname(phba);
|
|
if (!tag) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : Getting Initiator Name Failed\n");
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
|
|
if (rc) {
|
|
beiscsi_log(phba, KERN_ERR,
|
|
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
|
|
"BS_%d : Initiator Name MBX Failed\n");
|
|
return rc;
|
|
}
|
|
|
|
resp = embedded_payload(wrb);
|
|
rc = sprintf(buf, "%s\n", resp->initiator_name);
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_port_state - Get the Port State
|
|
* @shost : pointer to scsi_host structure
|
|
*
|
|
*/
|
|
static void beiscsi_get_port_state(struct Scsi_Host *shost)
|
|
{
|
|
struct beiscsi_hba *phba = iscsi_host_priv(shost);
|
|
struct iscsi_cls_host *ihost = shost->shost_data;
|
|
|
|
ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ?
|
|
ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_port_speed - Get the Port Speed from Adapter
|
|
* @shost : pointer to scsi_host structure
|
|
*
|
|
*/
|
|
static void beiscsi_get_port_speed(struct Scsi_Host *shost)
|
|
{
|
|
struct beiscsi_hba *phba = iscsi_host_priv(shost);
|
|
struct iscsi_cls_host *ihost = shost->shost_data;
|
|
|
|
switch (phba->port_speed) {
|
|
case BE2ISCSI_LINK_SPEED_10MBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
|
|
break;
|
|
case BE2ISCSI_LINK_SPEED_100MBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
|
|
break;
|
|
case BE2ISCSI_LINK_SPEED_1GBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
|
|
break;
|
|
case BE2ISCSI_LINK_SPEED_10GBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
|
|
break;
|
|
case BE2ISCSI_LINK_SPEED_25GBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
|
|
break;
|
|
case BE2ISCSI_LINK_SPEED_40GBPS:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
|
|
break;
|
|
default:
|
|
ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_host_param - get the iscsi parameter
|
|
* @shost: pointer to scsi_host structure
|
|
* @param: parameter type identifier
|
|
* @buf: buffer pointer
|
|
*
|
|
* returns host parameter
|
|
*/
|
|
int beiscsi_get_host_param(struct Scsi_Host *shost,
|
|
enum iscsi_host_param param, char *buf)
|
|
{
|
|
struct beiscsi_hba *phba = iscsi_host_priv(shost);
|
|
int status = 0;
|
|
|
|
if (!beiscsi_hba_is_online(phba)) {
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : HBA in error 0x%lx\n", phba->state);
|
|
return -EBUSY;
|
|
}
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_get_host_param, param = %d\n", param);
|
|
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
status = beiscsi_get_macaddr(buf, phba);
|
|
if (status < 0) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : beiscsi_get_macaddr Failed\n");
|
|
return status;
|
|
}
|
|
break;
|
|
case ISCSI_HOST_PARAM_INITIATOR_NAME:
|
|
status = beiscsi_get_initname(buf, phba);
|
|
if (status < 0) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : Retreiving Initiator Name Failed\n");
|
|
return status;
|
|
}
|
|
break;
|
|
case ISCSI_HOST_PARAM_PORT_STATE:
|
|
beiscsi_get_port_state(shost);
|
|
status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
|
|
break;
|
|
case ISCSI_HOST_PARAM_PORT_SPEED:
|
|
beiscsi_get_port_speed(shost);
|
|
status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
|
|
break;
|
|
default:
|
|
return iscsi_host_get_param(shost, param, buf);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
|
|
{
|
|
struct be_cmd_get_nic_conf_resp resp;
|
|
int rc;
|
|
|
|
if (phba->mac_addr_set)
|
|
return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
|
|
|
|
memset(&resp, 0, sizeof(resp));
|
|
rc = mgmt_get_nic_conf(phba, &resp);
|
|
if (rc)
|
|
return rc;
|
|
|
|
phba->mac_addr_set = true;
|
|
memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
|
|
return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
|
|
}
|
|
|
|
/**
|
|
* beiscsi_conn_get_stats - get the iscsi stats
|
|
* @cls_conn: pointer to iscsi cls conn
|
|
* @stats: pointer to iscsi_stats structure
|
|
*
|
|
* returns iscsi stats
|
|
*/
|
|
void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
|
|
struct iscsi_stats *stats)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct beiscsi_hba *phba = NULL;
|
|
|
|
phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_conn_get_stats\n");
|
|
|
|
stats->txdata_octets = conn->txdata_octets;
|
|
stats->rxdata_octets = conn->rxdata_octets;
|
|
stats->dataout_pdus = conn->dataout_pdus_cnt;
|
|
stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
|
|
stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
|
|
stats->datain_pdus = conn->datain_pdus_cnt;
|
|
stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
|
|
stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
|
|
stats->r2t_pdus = conn->r2t_pdus_cnt;
|
|
stats->digest_err = 0;
|
|
stats->timeout_err = 0;
|
|
stats->custom_length = 1;
|
|
strcpy(stats->custom[0].desc, "eh_abort_cnt");
|
|
stats->custom[0].value = conn->eh_abort_cnt;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_set_params_for_offld - get the parameters for offload
|
|
* @beiscsi_conn: pointer to beiscsi_conn
|
|
* @params: pointer to offload_params structure
|
|
*/
|
|
static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
|
|
struct beiscsi_offload_params *params)
|
|
{
|
|
struct iscsi_conn *conn = beiscsi_conn->conn;
|
|
struct iscsi_session *session = conn->session;
|
|
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
|
|
params, session->max_burst);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params,
|
|
max_send_data_segment_length, params,
|
|
conn->max_xmit_dlength);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
|
|
params, session->first_burst);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
|
|
session->erl);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
|
|
conn->datadgst_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
|
|
conn->hdrdgst_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
|
|
session->initial_r2t_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
|
|
session->imm_data_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params,
|
|
data_seq_inorder, params,
|
|
session->dataseq_inorder_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params,
|
|
pdu_seq_inorder, params,
|
|
session->pdu_inorder_en);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
|
|
session->max_r2t);
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
|
|
(conn->exp_statsn - 1));
|
|
AMAP_SET_BITS(struct amap_beiscsi_offload_params,
|
|
max_recv_data_segment_length, params,
|
|
conn->max_recv_dlength);
|
|
|
|
}
|
|
|
|
/**
|
|
* beiscsi_conn_start - offload of session to chip
|
|
* @cls_conn: pointer to beiscsi_conn
|
|
*/
|
|
int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
|
|
{
|
|
struct iscsi_conn *conn = cls_conn->dd_data;
|
|
struct beiscsi_conn *beiscsi_conn = conn->dd_data;
|
|
struct beiscsi_endpoint *beiscsi_ep;
|
|
struct beiscsi_offload_params params;
|
|
struct beiscsi_hba *phba;
|
|
|
|
phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
|
|
|
|
if (!beiscsi_hba_is_online(phba)) {
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : HBA in error 0x%lx\n", phba->state);
|
|
return -EBUSY;
|
|
}
|
|
beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_conn_start\n");
|
|
|
|
memset(¶ms, 0, sizeof(struct beiscsi_offload_params));
|
|
beiscsi_ep = beiscsi_conn->ep;
|
|
if (!beiscsi_ep)
|
|
beiscsi_log(beiscsi_conn->phba, KERN_ERR,
|
|
BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
|
|
|
|
beiscsi_conn->login_in_progress = 0;
|
|
beiscsi_set_params_for_offld(beiscsi_conn, ¶ms);
|
|
beiscsi_offload_connection(beiscsi_conn, ¶ms);
|
|
iscsi_conn_start(cls_conn);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_get_cid - Allocate a cid
|
|
* @phba: The phba instance
|
|
*/
|
|
static int beiscsi_get_cid(struct beiscsi_hba *phba)
|
|
{
|
|
uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
|
|
unsigned short cid, cid_from_ulp;
|
|
struct ulp_cid_info *cid_info;
|
|
|
|
/* Find the ULP which has more CID available */
|
|
cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
|
|
BEISCSI_ULP0_AVLBL_CID(phba) : 0;
|
|
cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
|
|
BEISCSI_ULP1_AVLBL_CID(phba) : 0;
|
|
cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
|
|
BEISCSI_ULP0 : BEISCSI_ULP1;
|
|
/**
|
|
* If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp
|
|
* is ZERO for both, ULP 1 is returned.
|
|
* Check if ULP is loaded before getting new CID.
|
|
*/
|
|
if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported))
|
|
return BE_INVALID_CID;
|
|
|
|
cid_info = phba->cid_array_info[cid_from_ulp];
|
|
cid = cid_info->cid_array[cid_info->cid_alloc];
|
|
if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) {
|
|
__beiscsi_log(phba, KERN_ERR,
|
|
"BS_%d : failed to get cid: available %u:%u\n",
|
|
cid_info->avlbl_cids, cid_info->cid_free);
|
|
return BE_INVALID_CID;
|
|
}
|
|
/* empty the slot */
|
|
cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID;
|
|
if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp))
|
|
cid_info->cid_alloc = 0;
|
|
cid_info->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)
|
|
{
|
|
uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
|
|
struct hwi_wrb_context *pwrb_context;
|
|
struct hwi_controller *phwi_ctrlr;
|
|
struct ulp_cid_info *cid_info;
|
|
uint16_t cid_post_ulp;
|
|
|
|
phwi_ctrlr = phba->phwi_ctrlr;
|
|
pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
|
|
cid_post_ulp = pwrb_context->ulp_num;
|
|
|
|
cid_info = phba->cid_array_info[cid_post_ulp];
|
|
/* fill only in empty slot */
|
|
if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) {
|
|
__beiscsi_log(phba, KERN_ERR,
|
|
"BS_%d : failed to put cid %u: available %u:%u\n",
|
|
cid, cid_info->avlbl_cids, cid_info->cid_free);
|
|
return;
|
|
}
|
|
cid_info->cid_array[cid_info->cid_free++] = cid;
|
|
if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
|
|
cid_info->cid_free = 0;
|
|
cid_info->avlbl_cids++;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
struct beiscsi_conn *beiscsi_conn;
|
|
|
|
beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
|
|
beiscsi_ep->phba = NULL;
|
|
/* clear this to track freeing in beiscsi_ep_disconnect */
|
|
phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL;
|
|
|
|
/**
|
|
* Check if any connection resource allocated by driver
|
|
* is to be freed.This case occurs when target redirection
|
|
* or connection retry is done.
|
|
**/
|
|
if (!beiscsi_ep->conn)
|
|
return;
|
|
|
|
beiscsi_conn = beiscsi_ep->conn;
|
|
/**
|
|
* Break ep->conn link here so that completions after
|
|
* this are ignored.
|
|
*/
|
|
beiscsi_ep->conn = NULL;
|
|
if (beiscsi_conn->login_in_progress) {
|
|
beiscsi_free_mgmt_task_handles(beiscsi_conn,
|
|
beiscsi_conn->task);
|
|
beiscsi_conn->login_in_progress = 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 tcp_connect_and_offload_out *ptcpcnct_out;
|
|
struct be_dma_mem nonemb_cmd;
|
|
unsigned int tag, req_memsize;
|
|
int ret = -ENOMEM;
|
|
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_open_conn\n");
|
|
|
|
beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
|
|
if (beiscsi_ep->ep_cid == BE_INVALID_CID) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : No free cid available\n");
|
|
return ret;
|
|
}
|
|
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
phba->ep_array[BE_GET_CRI_FROM_CID
|
|
(beiscsi_ep->ep_cid)] = ep;
|
|
|
|
beiscsi_ep->cid_vld = 0;
|
|
|
|
if (is_chip_be2_be3r(phba))
|
|
req_memsize = sizeof(struct tcp_connect_and_offload_in);
|
|
else
|
|
req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
|
|
|
|
nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
|
|
req_memsize,
|
|
&nonemb_cmd.dma);
|
|
if (nonemb_cmd.va == NULL) {
|
|
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : Failed to allocate memory for"
|
|
" mgmt_open_connection\n");
|
|
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
return -ENOMEM;
|
|
}
|
|
nonemb_cmd.size = req_memsize;
|
|
memset(nonemb_cmd.va, 0, nonemb_cmd.size);
|
|
tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
|
|
if (tag <= 0) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : mgmt_open_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
|
|
if (ret) {
|
|
beiscsi_log(phba, KERN_ERR,
|
|
BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
|
|
"BS_%d : mgmt_open_connection Failed");
|
|
|
|
if (ret != -EBUSY)
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
return ret;
|
|
}
|
|
|
|
ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
|
|
beiscsi_ep = ep->dd_data;
|
|
beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
|
|
beiscsi_ep->cid_vld = 1;
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : mgmt_open_connection Success\n");
|
|
|
|
pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
|
|
nonemb_cmd.va, nonemb_cmd.dma);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
if (!shost) {
|
|
ret = -ENXIO;
|
|
pr_err("beiscsi_ep_connect shost is NULL\n");
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
phba = iscsi_host_priv(shost);
|
|
if (!beiscsi_hba_is_online(phba)) {
|
|
ret = -EIO;
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : HBA in error 0x%lx\n", phba->state);
|
|
return ERR_PTR(ret);
|
|
}
|
|
if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) {
|
|
ret = -EBUSY;
|
|
beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : The Adapter Port state is Down!!!\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) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : 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;
|
|
|
|
beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_ep_poll\n");
|
|
|
|
if (beiscsi_ep->cid_vld == 1)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* beiscsi_flush_cq()- Flush the CQ created.
|
|
* @phba: ptr device priv structure.
|
|
*
|
|
* Before the connection resource are freed flush
|
|
* all the CQ enteries
|
|
**/
|
|
static void beiscsi_flush_cq(struct beiscsi_hba *phba)
|
|
{
|
|
uint16_t i;
|
|
struct be_eq_obj *pbe_eq;
|
|
struct hwi_controller *phwi_ctrlr;
|
|
struct hwi_context_memory *phwi_context;
|
|
|
|
phwi_ctrlr = phba->phwi_ctrlr;
|
|
phwi_context = phwi_ctrlr->phwi_ctxt;
|
|
|
|
for (i = 0; i < phba->num_cpus; i++) {
|
|
pbe_eq = &phwi_context->be_eq[i];
|
|
irq_poll_disable(&pbe_eq->iopoll);
|
|
beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
|
|
irq_poll_enable(&pbe_eq->iopoll);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : upload failed for cid 0x%x\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
ret = -EAGAIN;
|
|
}
|
|
|
|
ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
|
|
|
|
/* Flush the CQ entries */
|
|
beiscsi_flush_cq(phba);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
uint8_t mgmt_invalidate_flag, tcp_upload_flag;
|
|
unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
|
|
uint16_t cri_index;
|
|
|
|
beiscsi_ep = ep->dd_data;
|
|
phba = beiscsi_ep->phba;
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n",
|
|
beiscsi_ep->ep_cid);
|
|
|
|
cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid);
|
|
if (!phba->ep_array[cri_index]) {
|
|
__beiscsi_log(phba, KERN_ERR,
|
|
"BS_%d : ep_array at %u cid %u empty\n",
|
|
cri_index,
|
|
beiscsi_ep->ep_cid);
|
|
return;
|
|
}
|
|
|
|
if (beiscsi_ep->conn) {
|
|
beiscsi_conn = beiscsi_ep->conn;
|
|
iscsi_suspend_queue(beiscsi_conn->conn);
|
|
mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
|
|
tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
|
|
} else {
|
|
mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
|
|
tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
|
|
}
|
|
|
|
if (!beiscsi_hba_is_online(phba)) {
|
|
beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : HBA in error 0x%lx\n", phba->state);
|
|
goto free_ep;
|
|
}
|
|
|
|
tag = mgmt_invalidate_connection(phba, beiscsi_ep,
|
|
beiscsi_ep->ep_cid,
|
|
mgmt_invalidate_flag,
|
|
savecfg_flag);
|
|
if (!tag) {
|
|
beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
|
|
"BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
|
|
beiscsi_ep->ep_cid);
|
|
}
|
|
|
|
beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
|
|
beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
|
|
free_ep:
|
|
msleep(BEISCSI_LOGOUT_SYNC_DELAY);
|
|
beiscsi_free_ep(beiscsi_ep);
|
|
if (!phba->conn_table[cri_index])
|
|
__beiscsi_log(phba, KERN_ERR,
|
|
"BS_%d : conn_table empty at %u: cid %u\n",
|
|
cri_index,
|
|
beiscsi_ep->ep_cid);
|
|
phba->conn_table[cri_index] = NULL;
|
|
iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
|
|
}
|
|
|
|
umode_t beiscsi_attr_is_visible(int param_type, int param)
|
|
{
|
|
switch (param_type) {
|
|
case ISCSI_NET_PARAM:
|
|
switch (param) {
|
|
case ISCSI_NET_PARAM_IFACE_ENABLE:
|
|
case ISCSI_NET_PARAM_IPV4_ADDR:
|
|
case ISCSI_NET_PARAM_IPV4_SUBNET:
|
|
case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
|
|
case ISCSI_NET_PARAM_IPV4_GW:
|
|
case ISCSI_NET_PARAM_IPV6_ADDR:
|
|
case ISCSI_NET_PARAM_VLAN_ID:
|
|
case ISCSI_NET_PARAM_VLAN_PRIORITY:
|
|
case ISCSI_NET_PARAM_VLAN_ENABLED:
|
|
return S_IRUGO;
|
|
default:
|
|
return 0;
|
|
}
|
|
case ISCSI_HOST_PARAM:
|
|
switch (param) {
|
|
case ISCSI_HOST_PARAM_HWADDRESS:
|
|
case ISCSI_HOST_PARAM_INITIATOR_NAME:
|
|
case ISCSI_HOST_PARAM_PORT_STATE:
|
|
case ISCSI_HOST_PARAM_PORT_SPEED:
|
|
return S_IRUGO;
|
|
default:
|
|
return 0;
|
|
}
|
|
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;
|
|
}
|