^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * This file contains the Linux/SCSI LLD virtual SCSI initiator driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for emulated SAS initiator ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * © Copyright 2011-2013 Datera, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This program is free software; you can redistribute it and/or modify
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * it under the terms of the GNU General Public License as published by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * the Free Software Foundation; either version 2 of the License, or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * (at your option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * This program is distributed in the hope that it will be useful,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * but WITHOUT ANY WARRANTY; without even the implied warranty of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) ****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/configfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <scsi/scsi_tcq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <target/target_core_base.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <target/target_core_fabric.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include "tcm_loop.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define to_tcm_loop_hba(hba) container_of(hba, struct tcm_loop_hba, dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static struct workqueue_struct *tcm_loop_workqueue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static struct kmem_cache *tcm_loop_cmd_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static int tcm_loop_hba_no_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int tcm_loop_queue_status(struct se_cmd *se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * Called from struct target_core_fabric_ops->check_stop_free()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static int tcm_loop_check_stop_free(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) return transport_generic_free_cmd(se_cmd, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static void tcm_loop_release_cmd(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct tcm_loop_cmd, tl_se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int tcm_loop_show_info(struct seq_file *m, struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) seq_puts(m, "tcm_loop_proc_info()\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static int tcm_loop_driver_probe(struct device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static int tcm_loop_driver_remove(struct device *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int pseudo_lld_bus_match(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct device_driver *dev_driver)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static struct bus_type tcm_loop_lld_bus = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .name = "tcm_loop_bus",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) .match = pseudo_lld_bus_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .probe = tcm_loop_driver_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .remove = tcm_loop_driver_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static struct device_driver tcm_loop_driverfs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) .name = "tcm_loop",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) .bus = &tcm_loop_lld_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * Used with root_device_register() in tcm_loop_alloc_core_bus() below
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static struct device *tcm_loop_primary;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static void tcm_loop_submission_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct tcm_loop_cmd *tl_cmd =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) container_of(work, struct tcm_loop_cmd, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct se_cmd *se_cmd = &tl_cmd->tl_se_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct scsi_cmnd *sc = tl_cmd->sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct scatterlist *sgl_bidi = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) u32 sgl_bidi_count = 0, transfer_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * Ensure that this tl_tpg reference from the incoming sc->device->id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * has already been configured via tcm_loop_make_naa_tpg().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!tl_tpg->tl_hba) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) set_host_byte(sc, DID_NO_CONNECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) goto out_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (tl_tpg->tl_transport_status == TCM_TRANSPORT_OFFLINE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) set_host_byte(sc, DID_TRANSPORT_DISRUPTED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) goto out_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) tl_nexus = tl_tpg->tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (!tl_nexus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) scmd_printk(KERN_ERR, sc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) "TCM_Loop I_T Nexus does not exist\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) set_host_byte(sc, DID_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) goto out_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) transfer_length = scsi_transfer_length(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (!scsi_prot_sg_count(sc) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) scsi_get_prot_op(sc) != SCSI_PROT_NORMAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) se_cmd->prot_pto = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * loopback transport doesn't support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * WRITE_GENERATE, READ_STRIP protection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * information operations, go ahead unprotected.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) transfer_length = scsi_bufflen(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) se_cmd->tag = tl_cmd->sc_cmd_tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) rc = target_submit_cmd_map_sgls(se_cmd, tl_nexus->se_sess, sc->cmnd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) &tl_cmd->tl_sense_buf[0], tl_cmd->sc->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) transfer_length, TCM_SIMPLE_TAG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) sc->sc_data_direction, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) scsi_sglist(sc), scsi_sg_count(sc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) sgl_bidi, sgl_bidi_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) scsi_prot_sglist(sc), scsi_prot_sg_count(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (rc < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) set_host_byte(sc, DID_NO_CONNECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) goto out_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) out_done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * ->queuecommand can be and usually is called from interrupt context, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * defer the actual submission to a workqueue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) struct tcm_loop_cmd *tl_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) pr_debug("%s() %d:%d:%d:%llu got CDB: 0x%02x scsi_buf_len: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) __func__, sc->device->host->host_no, sc->device->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) sc->device->channel, sc->device->lun, sc->cmnd[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) scsi_bufflen(sc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (!tl_cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) set_host_byte(sc, DID_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) tl_cmd->sc = sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) tl_cmd->sc_cmd_tag = sc->request->tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) INIT_WORK(&tl_cmd->work, tcm_loop_submission_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) queue_work(tcm_loop_workqueue, &tl_cmd->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * Called from SCSI EH process context to issue a LUN_RESET TMR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * to struct scsi_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static int tcm_loop_issue_tmr(struct tcm_loop_tpg *tl_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u64 lun, int task, enum tcm_tmreq_table tmr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) struct se_cmd *se_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct se_session *se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct tcm_loop_cmd *tl_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int ret = TMR_FUNCTION_FAILED, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * Locate the tl_nexus and se_sess pointers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) tl_nexus = tl_tpg->tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (!tl_nexus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) pr_err("Unable to perform device reset without active I_T Nexus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) tl_cmd = kmem_cache_zalloc(tcm_loop_cmd_cache, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (!tl_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) init_completion(&tl_cmd->tmr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) se_cmd = &tl_cmd->tl_se_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) se_sess = tl_tpg->tl_nexus->se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rc = target_submit_tmr(se_cmd, se_sess, tl_cmd->tl_sense_buf, lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) NULL, tmr, GFP_KERNEL, task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) TARGET_SCF_ACK_KREF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) goto release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) wait_for_completion(&tl_cmd->tmr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) ret = se_cmd->se_tmr_req->response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) target_put_sess_cmd(se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) kmem_cache_free(tcm_loop_cmd_cache, tl_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static int tcm_loop_abort_task(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * Locate the tcm_loop_hba_t pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) sc->request->tag, TMR_ABORT_TASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * Called from SCSI EH process context to issue a LUN_RESET TMR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * to struct scsi_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static int tcm_loop_device_reset(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int ret = FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Locate the tcm_loop_hba_t pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 0, TMR_LUN_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) static int tcm_loop_target_reset(struct scsi_cmnd *sc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * Locate the tcm_loop_hba_t pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (!tl_hba) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) pr_err("Unable to perform device reset without active I_T Nexus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) return FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * Locate the tl_tpg pointer from TargetID in sc->device->id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (tl_tpg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) tl_tpg->tl_transport_status = TCM_TRANSPORT_ONLINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) static struct scsi_host_template tcm_loop_driver_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) .show_info = tcm_loop_show_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) .proc_name = "tcm_loopback",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) .name = "TCM_Loopback",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) .queuecommand = tcm_loop_queuecommand,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) .change_queue_depth = scsi_change_queue_depth,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) .eh_abort_handler = tcm_loop_abort_task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) .eh_device_reset_handler = tcm_loop_device_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) .eh_target_reset_handler = tcm_loop_target_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .can_queue = 1024,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .this_id = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .sg_tablesize = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .cmd_per_lun = 1024,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) .max_sectors = 0xFFFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) .dma_boundary = PAGE_SIZE - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) .track_queue_depth = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static int tcm_loop_driver_probe(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct Scsi_Host *sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) int error, host_prot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) tl_hba = to_tcm_loop_hba(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) sh = scsi_host_alloc(&tcm_loop_driver_template,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) sizeof(struct tcm_loop_hba));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (!sh) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) pr_err("Unable to allocate struct scsi_host\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) tl_hba->sh = sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) * Assign the struct tcm_loop_hba pointer to struct Scsi_Host->hostdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) *((struct tcm_loop_hba **)sh->hostdata) = tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) * Setup single ID, Channel and LUN for now..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) sh->max_id = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) sh->max_lun = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) sh->max_channel = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) SHOST_DIX_TYPE2_PROTECTION | SHOST_DIX_TYPE3_PROTECTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) scsi_host_set_prot(sh, host_prot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) scsi_host_set_guard(sh, SHOST_DIX_GUARD_CRC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) error = scsi_add_host(sh, &tl_hba->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) pr_err("%s: scsi_add_host failed\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) scsi_host_put(sh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) static int tcm_loop_driver_remove(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) struct Scsi_Host *sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) tl_hba = to_tcm_loop_hba(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) sh = tl_hba->sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) scsi_remove_host(sh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) scsi_host_put(sh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static void tcm_loop_release_adapter(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) struct tcm_loop_hba *tl_hba = to_tcm_loop_hba(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) kfree(tl_hba);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) * Called from tcm_loop_make_scsi_hba() in tcm_loop_configfs.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) static int tcm_loop_setup_hba_bus(struct tcm_loop_hba *tl_hba, int tcm_loop_host_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) tl_hba->dev.bus = &tcm_loop_lld_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) tl_hba->dev.parent = tcm_loop_primary;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) tl_hba->dev.release = &tcm_loop_release_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) dev_set_name(&tl_hba->dev, "tcm_loop_adapter_%d", tcm_loop_host_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) ret = device_register(&tl_hba->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) pr_err("device_register() failed for tl_hba->dev: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * Called from tcm_loop_fabric_init() in tcl_loop_fabric.c to load the emulated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * tcm_loop SCSI bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static int tcm_loop_alloc_core_bus(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) tcm_loop_primary = root_device_register("tcm_loop_0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (IS_ERR(tcm_loop_primary)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) pr_err("Unable to allocate tcm_loop_primary\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) return PTR_ERR(tcm_loop_primary);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) ret = bus_register(&tcm_loop_lld_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) pr_err("bus_register() failed for tcm_loop_lld_bus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) goto dev_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) ret = driver_register(&tcm_loop_driverfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) pr_err("driver_register() failed for tcm_loop_driverfs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) goto bus_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) pr_debug("Initialized TCM Loop Core Bus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) bus_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) bus_unregister(&tcm_loop_lld_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) dev_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) root_device_unregister(tcm_loop_primary);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) static void tcm_loop_release_core_bus(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) driver_unregister(&tcm_loop_driverfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) bus_unregister(&tcm_loop_lld_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) root_device_unregister(tcm_loop_primary);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) pr_debug("Releasing TCM Loop Core BUS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static inline struct tcm_loop_tpg *tl_tpg(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) return container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static char *tcm_loop_get_endpoint_wwn(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * Return the passed NAA identifier for the Target Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return &tl_tpg(se_tpg)->tl_hba->tl_wwn_address[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static u16 tcm_loop_get_tag(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * This Tag is used when forming SCSI Name identifier in EVPD=1 0x83
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * to represent the SCSI Target Port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return tl_tpg(se_tpg)->tl_tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * Returning (1) here allows for target_core_mod struct se_node_acl to be generated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * based upon the incoming fabric dependent SCSI Initiator Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static int tcm_loop_check_demo_mode(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static int tcm_loop_check_demo_mode_cache(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) * Allow I_T Nexus full READ-WRITE access without explict Initiator Node ACLs for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) * local virtual Linux/SCSI LLD passthrough into VM hypervisor guest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) static int tcm_loop_check_demo_mode_write_protect(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) * Because TCM_Loop does not use explict ACLs and MappedLUNs, this will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * never be called for TCM_Loop by target_core_fabric_configfs.c code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * It has been added here as a nop for target_fabric_tf_ops_check()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) static int tcm_loop_check_prod_mode_write_protect(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) static int tcm_loop_check_prot_fabric_only(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) return tl_tpg->tl_fabric_prot_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static u32 tcm_loop_get_inst_index(struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static u32 tcm_loop_sess_get_index(struct se_session *se_sess)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static void tcm_loop_set_default_node_attributes(struct se_node_acl *se_acl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static int tcm_loop_get_cmd_state(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) struct tcm_loop_cmd, tl_se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return tl_cmd->sc_cmd_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) static int tcm_loop_write_pending(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * Since Linux/SCSI has already sent down a struct scsi_cmnd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * sc->sc_data_direction of DMA_TO_DEVICE with struct scatterlist array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * memory, and memory has already been mapped to struct se_cmd->t_mem_list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * format with transport_generic_map_mem_to_cmd().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * We now tell TCM to add this WRITE CDB directly into the TCM storage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * object execution queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) target_execute_cmd(se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) static int tcm_loop_queue_data_or_status(const char *func,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) struct se_cmd *se_cmd, u8 scsi_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct tcm_loop_cmd, tl_se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct scsi_cmnd *sc = tl_cmd->sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) pr_debug("%s() called for scsi_cmnd: %p cdb: 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) func, sc, sc->cmnd[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (se_cmd->sense_buffer &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) ((se_cmd->se_cmd_flags & SCF_TRANSPORT_TASK_SENSE) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) (se_cmd->se_cmd_flags & SCF_EMULATED_TASK_SENSE))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) memcpy(sc->sense_buffer, se_cmd->sense_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) sc->result = SAM_STAT_CHECK_CONDITION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) set_driver_byte(sc, DRIVER_SENSE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) sc->result = scsi_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) set_host_byte(sc, DID_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) if ((se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) (se_cmd->se_cmd_flags & SCF_UNDERFLOW_BIT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) scsi_set_resid(sc, se_cmd->residual_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) sc->scsi_done(sc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) static int tcm_loop_queue_data_in(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) return tcm_loop_queue_data_or_status(__func__, se_cmd, SAM_STAT_GOOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static int tcm_loop_queue_status(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) return tcm_loop_queue_data_or_status(__func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) se_cmd, se_cmd->scsi_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static void tcm_loop_queue_tm_rsp(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) struct tcm_loop_cmd *tl_cmd = container_of(se_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) struct tcm_loop_cmd, tl_se_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) /* Wake up tcm_loop_issue_tmr(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) complete(&tl_cmd->tmr_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) static void tcm_loop_aborted_task(struct se_cmd *se_cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) static char *tcm_loop_dump_proto_id(struct tcm_loop_hba *tl_hba)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) switch (tl_hba->tl_proto_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) case SCSI_PROTOCOL_SAS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return "SAS";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) case SCSI_PROTOCOL_FCP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return "FCP";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) case SCSI_PROTOCOL_ISCSI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) return "iSCSI";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) return "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) /* Start items for tcm_loop_port_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) static int tcm_loop_port_link(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) struct se_portal_group *se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) struct se_lun *lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) atomic_inc_mb(&tl_tpg->tl_tpg_port_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * Add Linux/SCSI struct scsi_device by HCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) scsi_add_device(tl_hba->sh, 0, tl_tpg->tl_tpgt, lun->unpacked_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pr_debug("TCM_Loop_ConfigFS: Port Link Successful\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) static void tcm_loop_port_unlink(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) struct se_portal_group *se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) struct se_lun *se_lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct scsi_device *sd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) tl_tpg = container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) sd = scsi_device_lookup(tl_hba->sh, 0, tl_tpg->tl_tpgt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) se_lun->unpacked_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) if (!sd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) pr_err("Unable to locate struct scsi_device for %d:%d:%llu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) 0, tl_tpg->tl_tpgt, se_lun->unpacked_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) * Remove Linux/SCSI struct scsi_device by HCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) scsi_remove_device(sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) scsi_device_put(sd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) atomic_dec_mb(&tl_tpg->tl_tpg_port_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) pr_debug("TCM_Loop_ConfigFS: Port Unlink Successful\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) /* End items for tcm_loop_port_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) static ssize_t tcm_loop_tpg_attrib_fabric_prot_type_show(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct config_item *item, char *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) struct se_portal_group *se_tpg = attrib_to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) return sprintf(page, "%d\n", tl_tpg->tl_fabric_prot_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) static ssize_t tcm_loop_tpg_attrib_fabric_prot_type_store(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) struct config_item *item, const char *page, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) struct se_portal_group *se_tpg = attrib_to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg, struct tcm_loop_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) int ret = kstrtoul(page, 0, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) if (val != 0 && val != 1 && val != 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) tl_tpg->tl_fabric_prot_type = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) CONFIGFS_ATTR(tcm_loop_tpg_attrib_, fabric_prot_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) static struct configfs_attribute *tcm_loop_tpg_attrib_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) &tcm_loop_tpg_attrib_attr_fabric_prot_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) /* Start items for tcm_loop_nexus_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) static int tcm_loop_alloc_sess_cb(struct se_portal_group *se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct se_session *se_sess, void *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) tl_tpg->tl_nexus = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) static int tcm_loop_make_nexus(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct tcm_loop_tpg *tl_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) if (tl_tpg->tl_nexus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) pr_debug("tl_tpg->tl_nexus already exists\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) tl_nexus = kzalloc(sizeof(*tl_nexus), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) if (!tl_nexus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) tl_nexus->se_sess = target_setup_session(&tl_tpg->tl_se_tpg, 0, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) name, tl_nexus, tcm_loop_alloc_sess_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (IS_ERR(tl_nexus->se_sess)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) ret = PTR_ERR(tl_nexus->se_sess);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) kfree(tl_nexus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) pr_debug("TCM_Loop_ConfigFS: Established I_T Nexus to emulated %s Initiator Port: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) tcm_loop_dump_proto_id(tl_hba), name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) static int tcm_loop_drop_nexus(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) struct tcm_loop_tpg *tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) struct se_session *se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) tl_nexus = tpg->tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) if (!tl_nexus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) se_sess = tl_nexus->se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) if (!se_sess)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) if (atomic_read(&tpg->tl_tpg_port_count)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) pr_err("Unable to remove TCM_Loop I_T Nexus with active TPG port count: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) atomic_read(&tpg->tl_tpg_port_count));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) pr_debug("TCM_Loop_ConfigFS: Removing I_T Nexus to emulated %s Initiator Port: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) tcm_loop_dump_proto_id(tpg->tl_hba),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) tl_nexus->se_sess->se_node_acl->initiatorname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * Release the SCSI I_T Nexus to the emulated Target Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) target_remove_session(se_sess);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) tpg->tl_nexus = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) kfree(tl_nexus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) /* End items for tcm_loop_nexus_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) static ssize_t tcm_loop_tpg_nexus_show(struct config_item *item, char *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) struct se_portal_group *se_tpg = to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) struct tcm_loop_nexus *tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) tl_nexus = tl_tpg->tl_nexus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) if (!tl_nexus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) ret = snprintf(page, PAGE_SIZE, "%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) tl_nexus->se_sess->se_node_acl->initiatorname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) static ssize_t tcm_loop_tpg_nexus_store(struct config_item *item,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) const char *page, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) struct se_portal_group *se_tpg = to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) unsigned char i_port[TL_WWN_ADDR_LEN], *ptr, *port_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * Shutdown the active I_T nexus if 'NULL' is passed..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (!strncmp(page, "NULL", 4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) ret = tcm_loop_drop_nexus(tl_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return (!ret) ? count : ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) * Otherwise make sure the passed virtual Initiator port WWN matches
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * the fabric protocol_id set in tcm_loop_make_scsi_hba(), and call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * tcm_loop_make_nexus()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) if (strlen(page) >= TL_WWN_ADDR_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) pr_err("Emulated NAA Sas Address: %s, exceeds max: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) page, TL_WWN_ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) snprintf(&i_port[0], TL_WWN_ADDR_LEN, "%s", page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) ptr = strstr(i_port, "naa.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) if (tl_hba->tl_proto_id != SCSI_PROTOCOL_SAS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) pr_err("Passed SAS Initiator Port %s does not match target port protoid: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) i_port, tcm_loop_dump_proto_id(tl_hba));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) port_ptr = &i_port[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) goto check_newline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) ptr = strstr(i_port, "fc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) if (ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) if (tl_hba->tl_proto_id != SCSI_PROTOCOL_FCP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) pr_err("Passed FCP Initiator Port %s does not match target port protoid: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) i_port, tcm_loop_dump_proto_id(tl_hba));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) port_ptr = &i_port[3]; /* Skip over "fc." */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) goto check_newline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) ptr = strstr(i_port, "iqn.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) if (tl_hba->tl_proto_id != SCSI_PROTOCOL_ISCSI) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) pr_err("Passed iSCSI Initiator Port %s does not match target port protoid: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) i_port, tcm_loop_dump_proto_id(tl_hba));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) port_ptr = &i_port[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) goto check_newline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) pr_err("Unable to locate prefix for emulated Initiator Port: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) i_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * Clear any trailing newline for the NAA WWN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) check_newline:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) if (i_port[strlen(i_port)-1] == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) i_port[strlen(i_port)-1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) ret = tcm_loop_make_nexus(tl_tpg, port_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) static ssize_t tcm_loop_tpg_transport_status_show(struct config_item *item,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) char *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) struct se_portal_group *se_tpg = to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) const char *status = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) ssize_t ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) switch (tl_tpg->tl_transport_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) case TCM_TRANSPORT_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) status = "online";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) case TCM_TRANSPORT_OFFLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) status = "offline";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) ret = snprintf(page, PAGE_SIZE, "%s\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) static ssize_t tcm_loop_tpg_transport_status_store(struct config_item *item,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) const char *page, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) struct se_portal_group *se_tpg = to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (!strncmp(page, "online", 6)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) tl_tpg->tl_transport_status = TCM_TRANSPORT_ONLINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) if (!strncmp(page, "offline", 7)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) tl_tpg->tl_transport_status = TCM_TRANSPORT_OFFLINE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (tl_tpg->tl_nexus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) struct se_session *tl_sess = tl_tpg->tl_nexus->se_sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) core_allocate_nexus_loss_ua(tl_sess->se_node_acl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) static ssize_t tcm_loop_tpg_address_show(struct config_item *item,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) char *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) struct se_portal_group *se_tpg = to_tpg(item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct tcm_loop_hba *tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) return snprintf(page, PAGE_SIZE, "%d:0:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) tl_hba->sh->host_no, tl_tpg->tl_tpgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) CONFIGFS_ATTR(tcm_loop_tpg_, nexus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) CONFIGFS_ATTR(tcm_loop_tpg_, transport_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) CONFIGFS_ATTR_RO(tcm_loop_tpg_, address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) static struct configfs_attribute *tcm_loop_tpg_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) &tcm_loop_tpg_attr_nexus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) &tcm_loop_tpg_attr_transport_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) &tcm_loop_tpg_attr_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) /* Start items for tcm_loop_naa_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) static struct se_portal_group *tcm_loop_make_naa_tpg(struct se_wwn *wwn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct tcm_loop_hba *tl_hba = container_of(wwn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct tcm_loop_hba, tl_hba_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) struct tcm_loop_tpg *tl_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) unsigned long tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) if (strstr(name, "tpgt_") != name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) pr_err("Unable to locate \"tpgt_#\" directory group\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) if (kstrtoul(name+5, 10, &tpgt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (tpgt >= TL_TPGS_PER_HBA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) pr_err("Passed tpgt: %lu exceeds TL_TPGS_PER_HBA: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) tpgt, TL_TPGS_PER_HBA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) tl_tpg = &tl_hba->tl_hba_tpgs[tpgt];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) tl_tpg->tl_hba = tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) tl_tpg->tl_tpgt = tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) * Register the tl_tpg as a emulated TCM Target Endpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) ret = core_tpg_register(wwn, &tl_tpg->tl_se_tpg, tl_hba->tl_proto_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) pr_debug("TCM_Loop_ConfigFS: Allocated Emulated %s Target Port %s,t,0x%04lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) tcm_loop_dump_proto_id(tl_hba),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) config_item_name(&wwn->wwn_group.cg_item), tpgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) return &tl_tpg->tl_se_tpg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) static void tcm_loop_drop_naa_tpg(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) struct se_portal_group *se_tpg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) struct se_wwn *wwn = se_tpg->se_tpg_wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) struct tcm_loop_tpg *tl_tpg = container_of(se_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) struct tcm_loop_tpg, tl_se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) unsigned short tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) tl_hba = tl_tpg->tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) tpgt = tl_tpg->tl_tpgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) * Release the I_T Nexus for the Virtual target link if present
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) tcm_loop_drop_nexus(tl_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) * Deregister the tl_tpg as a emulated TCM Target Endpoint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) core_tpg_deregister(se_tpg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) tl_tpg->tl_hba = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) tl_tpg->tl_tpgt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) pr_debug("TCM_Loop_ConfigFS: Deallocated Emulated %s Target Port %s,t,0x%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) tcm_loop_dump_proto_id(tl_hba),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) config_item_name(&wwn->wwn_group.cg_item), tpgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) /* End items for tcm_loop_naa_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) /* Start items for tcm_loop_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) static struct se_wwn *tcm_loop_make_scsi_hba(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) struct target_fabric_configfs *tf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) struct config_group *group,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) struct tcm_loop_hba *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) struct Scsi_Host *sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) char *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) int ret, off = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) tl_hba = kzalloc(sizeof(*tl_hba), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (!tl_hba)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) * Determine the emulated Protocol Identifier and Target Port Name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * based on the incoming configfs directory name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ptr = strstr(name, "naa.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if (ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) tl_hba->tl_proto_id = SCSI_PROTOCOL_SAS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) goto check_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) ptr = strstr(name, "fc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) if (ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) tl_hba->tl_proto_id = SCSI_PROTOCOL_FCP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) off = 3; /* Skip over "fc." */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) goto check_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) ptr = strstr(name, "iqn.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) if (!ptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) pr_err("Unable to locate prefix for emulated Target Port: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) tl_hba->tl_proto_id = SCSI_PROTOCOL_ISCSI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) check_len:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (strlen(name) >= TL_WWN_ADDR_LEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) pr_err("Emulated NAA %s Address: %s, exceeds max: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) name, tcm_loop_dump_proto_id(tl_hba), TL_WWN_ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) snprintf(&tl_hba->tl_wwn_address[0], TL_WWN_ADDR_LEN, "%s", &name[off]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) * Call device_register(tl_hba->dev) to register the emulated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) * Linux/SCSI LLD of type struct Scsi_Host at tl_hba->sh after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * device_register() callbacks in tcm_loop_driver_probe()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) ret = tcm_loop_setup_hba_bus(tl_hba, tcm_loop_hba_no_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) sh = tl_hba->sh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) tcm_loop_hba_no_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) pr_debug("TCM_Loop_ConfigFS: Allocated emulated Target %s Address: %s at Linux/SCSI Host ID: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) tcm_loop_dump_proto_id(tl_hba), name, sh->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) return &tl_hba->tl_hba_wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) kfree(tl_hba);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) return ERR_PTR(ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) static void tcm_loop_drop_scsi_hba(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) struct se_wwn *wwn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) struct tcm_loop_hba *tl_hba = container_of(wwn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) struct tcm_loop_hba, tl_hba_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) pr_debug("TCM_Loop_ConfigFS: Deallocating emulated Target %s Address: %s at Linux/SCSI Host ID: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) tcm_loop_dump_proto_id(tl_hba), tl_hba->tl_wwn_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) tl_hba->sh->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * Call device_unregister() on the original tl_hba->dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) * tcm_loop_fabric_scsi.c:tcm_loop_release_adapter() will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * release *tl_hba;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) device_unregister(&tl_hba->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) /* Start items for tcm_loop_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) static ssize_t tcm_loop_wwn_version_show(struct config_item *item, char *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) return sprintf(page, "TCM Loopback Fabric module %s\n", TCM_LOOP_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) CONFIGFS_ATTR_RO(tcm_loop_wwn_, version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) static struct configfs_attribute *tcm_loop_wwn_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) &tcm_loop_wwn_attr_version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) /* End items for tcm_loop_cit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static const struct target_core_fabric_ops loop_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) .fabric_name = "loopback",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) .tpg_get_wwn = tcm_loop_get_endpoint_wwn,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) .tpg_get_tag = tcm_loop_get_tag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) .tpg_check_demo_mode = tcm_loop_check_demo_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) .tpg_check_demo_mode_cache = tcm_loop_check_demo_mode_cache,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) .tpg_check_demo_mode_write_protect =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) tcm_loop_check_demo_mode_write_protect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) .tpg_check_prod_mode_write_protect =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) tcm_loop_check_prod_mode_write_protect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) .tpg_check_prot_fabric_only = tcm_loop_check_prot_fabric_only,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) .tpg_get_inst_index = tcm_loop_get_inst_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) .check_stop_free = tcm_loop_check_stop_free,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) .release_cmd = tcm_loop_release_cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) .sess_get_index = tcm_loop_sess_get_index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) .write_pending = tcm_loop_write_pending,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) .set_default_node_attributes = tcm_loop_set_default_node_attributes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) .get_cmd_state = tcm_loop_get_cmd_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) .queue_data_in = tcm_loop_queue_data_in,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) .queue_status = tcm_loop_queue_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) .queue_tm_rsp = tcm_loop_queue_tm_rsp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) .aborted_task = tcm_loop_aborted_task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) .fabric_make_wwn = tcm_loop_make_scsi_hba,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) .fabric_drop_wwn = tcm_loop_drop_scsi_hba,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) .fabric_make_tpg = tcm_loop_make_naa_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) .fabric_drop_tpg = tcm_loop_drop_naa_tpg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) .fabric_post_link = tcm_loop_port_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) .fabric_pre_unlink = tcm_loop_port_unlink,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) .tfc_wwn_attrs = tcm_loop_wwn_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) .tfc_tpg_base_attrs = tcm_loop_tpg_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) .tfc_tpg_attrib_attrs = tcm_loop_tpg_attrib_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) static int __init tcm_loop_fabric_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) int ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) tcm_loop_workqueue = alloc_workqueue("tcm_loop", 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) if (!tcm_loop_workqueue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) tcm_loop_cmd_cache = kmem_cache_create("tcm_loop_cmd_cache",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) sizeof(struct tcm_loop_cmd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) __alignof__(struct tcm_loop_cmd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) if (!tcm_loop_cmd_cache) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) pr_debug("kmem_cache_create() for tcm_loop_cmd_cache failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) goto out_destroy_workqueue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) ret = tcm_loop_alloc_core_bus();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) goto out_destroy_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) ret = target_register_template(&loop_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) goto out_release_core_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) out_release_core_bus:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) tcm_loop_release_core_bus();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) out_destroy_cache:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) kmem_cache_destroy(tcm_loop_cmd_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) out_destroy_workqueue:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) destroy_workqueue(tcm_loop_workqueue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) static void __exit tcm_loop_fabric_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) target_unregister_template(&loop_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) tcm_loop_release_core_bus();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) kmem_cache_destroy(tcm_loop_cmd_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) destroy_workqueue(tcm_loop_workqueue);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) MODULE_DESCRIPTION("TCM loopback virtual Linux/SCSI fabric module");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) MODULE_AUTHOR("Nicholas A. Bellinger <nab@risingtidesystems.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) module_init(tcm_loop_fabric_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) module_exit(tcm_loop_fabric_exit);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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