1699 lines
45 KiB
C
1699 lines
45 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 Broadcom. All Rights Reserved. The term
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* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.
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*/
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#include <target/target_core_base.h>
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#include <target/target_core_fabric.h>
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#include "efct_driver.h"
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#include "efct_lio.h"
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/*
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* lio_wq is used to call the LIO backed during creation or deletion of
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* sessions. This brings serialization to the session management as we create
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* single threaded work queue.
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*/
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static struct workqueue_struct *lio_wq;
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static int
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efct_format_wwn(char *str, size_t len, const char *pre, u64 wwn)
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{
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u8 a[8];
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put_unaligned_be64(wwn, a);
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return snprintf(str, len, "%s%8phC", pre, a);
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}
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static int
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efct_lio_parse_wwn(const char *name, u64 *wwp, u8 npiv)
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{
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int num;
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u8 b[8];
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if (npiv) {
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num = sscanf(name,
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"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx",
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&b[0], &b[1], &b[2], &b[3], &b[4], &b[5], &b[6],
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&b[7]);
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} else {
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num = sscanf(name,
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"%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
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&b[0], &b[1], &b[2], &b[3], &b[4], &b[5], &b[6],
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&b[7]);
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}
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if (num != 8)
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return -EINVAL;
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*wwp = get_unaligned_be64(b);
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return 0;
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}
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static int
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efct_lio_parse_npiv_wwn(const char *name, size_t size, u64 *wwpn, u64 *wwnn)
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{
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unsigned int cnt = size;
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int rc;
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*wwpn = *wwnn = 0;
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if (name[cnt - 1] == '\n' || name[cnt - 1] == 0)
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cnt--;
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/* validate we have enough characters for WWPN */
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if ((cnt != (16 + 1 + 16)) || (name[16] != ':'))
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return -EINVAL;
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rc = efct_lio_parse_wwn(&name[0], wwpn, 1);
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if (rc)
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return rc;
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rc = efct_lio_parse_wwn(&name[17], wwnn, 1);
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if (rc)
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return rc;
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return 0;
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}
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static ssize_t
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efct_lio_tpg_enable_show(struct config_item *item, char *page)
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return snprintf(page, PAGE_SIZE, "%d\n", tpg->enabled);
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}
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static ssize_t
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efct_lio_tpg_enable_store(struct config_item *item, const char *page,
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size_t count)
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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struct efct *efct;
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struct efc *efc;
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unsigned long op;
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if (!tpg->nport || !tpg->nport->efct) {
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pr_err("%s: Unable to find EFCT device\n", __func__);
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return -EINVAL;
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}
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efct = tpg->nport->efct;
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efc = efct->efcport;
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if (kstrtoul(page, 0, &op) < 0)
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return -EINVAL;
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if (op == 1) {
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int ret;
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tpg->enabled = true;
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efc_log_debug(efct, "enable portal group %d\n", tpg->tpgt);
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ret = efct_xport_control(efct->xport, EFCT_XPORT_PORT_ONLINE);
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if (ret) {
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efct->tgt_efct.lio_nport = NULL;
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efc_log_debug(efct, "cannot bring port online\n");
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return ret;
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}
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} else if (op == 0) {
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efc_log_debug(efct, "disable portal group %d\n", tpg->tpgt);
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if (efc->domain && efc->domain->nport)
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efct_scsi_tgt_del_nport(efc, efc->domain->nport);
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tpg->enabled = false;
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} else {
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return -EINVAL;
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}
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return count;
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}
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static ssize_t
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efct_lio_npiv_tpg_enable_show(struct config_item *item, char *page)
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return snprintf(page, PAGE_SIZE, "%d\n", tpg->enabled);
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}
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static ssize_t
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efct_lio_npiv_tpg_enable_store(struct config_item *item, const char *page,
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size_t count)
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{
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struct se_portal_group *se_tpg = to_tpg(item);
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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struct efct_lio_vport *lio_vport = tpg->vport;
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struct efct *efct;
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struct efc *efc;
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unsigned long op;
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if (kstrtoul(page, 0, &op) < 0)
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return -EINVAL;
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if (!lio_vport) {
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pr_err("Unable to find vport\n");
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return -EINVAL;
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}
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efct = lio_vport->efct;
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efc = efct->efcport;
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if (op == 1) {
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tpg->enabled = true;
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efc_log_debug(efct, "enable portal group %d\n", tpg->tpgt);
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if (efc->domain) {
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int ret;
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ret = efc_nport_vport_new(efc->domain,
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lio_vport->npiv_wwpn,
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lio_vport->npiv_wwnn,
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U32_MAX, false, true,
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NULL, NULL);
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if (ret != 0) {
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efc_log_err(efct, "Failed to create Vport\n");
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return ret;
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}
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return count;
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}
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if (!(efc_vport_create_spec(efc, lio_vport->npiv_wwnn,
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lio_vport->npiv_wwpn, U32_MAX,
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false, true, NULL, NULL)))
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return -ENOMEM;
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} else if (op == 0) {
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efc_log_debug(efct, "disable portal group %d\n", tpg->tpgt);
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tpg->enabled = false;
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/* only physical nport should exist, free lio_nport
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* allocated in efct_lio_make_nport
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*/
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if (efc->domain) {
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efc_nport_vport_del(efct->efcport, efc->domain,
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lio_vport->npiv_wwpn,
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lio_vport->npiv_wwnn);
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return count;
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}
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} else {
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return -EINVAL;
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}
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return count;
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}
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static char *efct_lio_get_fabric_wwn(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->nport->wwpn_str;
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}
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static char *efct_lio_get_npiv_fabric_wwn(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->vport->wwpn_str;
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}
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static u16 efct_lio_get_tag(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpgt;
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}
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static u16 efct_lio_get_npiv_tag(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpgt;
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}
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static int efct_lio_check_demo_mode(struct se_portal_group *se_tpg)
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{
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return 1;
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}
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static int efct_lio_check_demo_mode_cache(struct se_portal_group *se_tpg)
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{
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return 1;
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}
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static int efct_lio_check_demo_write_protect(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpg_attrib.demo_mode_write_protect;
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}
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static int
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efct_lio_npiv_check_demo_write_protect(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpg_attrib.demo_mode_write_protect;
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}
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static int efct_lio_check_prod_write_protect(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpg_attrib.prod_mode_write_protect;
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}
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static int
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efct_lio_npiv_check_prod_write_protect(struct se_portal_group *se_tpg)
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{
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struct efct_lio_tpg *tpg =
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container_of(se_tpg, struct efct_lio_tpg, tpg);
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return tpg->tpg_attrib.prod_mode_write_protect;
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}
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static u32 efct_lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
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{
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return 1;
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}
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static int efct_lio_check_stop_free(struct se_cmd *se_cmd)
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{
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struct efct_scsi_tgt_io *ocp =
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container_of(se_cmd, struct efct_scsi_tgt_io, cmd);
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struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
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efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_CHK_STOP_FREE);
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return target_put_sess_cmd(se_cmd);
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}
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static int
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efct_lio_abort_tgt_cb(struct efct_io *io,
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enum efct_scsi_io_status scsi_status,
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u32 flags, void *arg)
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{
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efct_lio_io_printf(io, "Abort done, status:%d\n", scsi_status);
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return 0;
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}
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static void
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efct_lio_aborted_task(struct se_cmd *se_cmd)
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{
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struct efct_scsi_tgt_io *ocp =
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container_of(se_cmd, struct efct_scsi_tgt_io, cmd);
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struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
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efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_ABORTED_TASK);
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if (ocp->rsp_sent)
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return;
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/* command has been aborted, cleanup here */
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ocp->aborting = true;
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ocp->err = EFCT_SCSI_STATUS_ABORTED;
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/* terminate the exchange */
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efct_scsi_tgt_abort_io(io, efct_lio_abort_tgt_cb, NULL);
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}
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static void efct_lio_release_cmd(struct se_cmd *se_cmd)
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{
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struct efct_scsi_tgt_io *ocp =
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container_of(se_cmd, struct efct_scsi_tgt_io, cmd);
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struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
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struct efct *efct = io->efct;
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efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_RELEASE_CMD);
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efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_CMPL_CMD);
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efct_scsi_io_complete(io);
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atomic_sub_return(1, &efct->tgt_efct.ios_in_use);
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}
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static void efct_lio_close_session(struct se_session *se_sess)
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{
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struct efc_node *node = se_sess->fabric_sess_ptr;
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pr_debug("se_sess=%p node=%p", se_sess, node);
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if (!node) {
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pr_debug("node is NULL");
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return;
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}
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efc_node_post_shutdown(node, NULL);
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}
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static u32 efct_lio_sess_get_index(struct se_session *se_sess)
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{
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return 0;
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}
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static void efct_lio_set_default_node_attrs(struct se_node_acl *nacl)
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{
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}
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static int efct_lio_get_cmd_state(struct se_cmd *cmd)
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{
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struct efct_scsi_tgt_io *ocp =
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container_of(cmd, struct efct_scsi_tgt_io, cmd);
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struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
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if (!io)
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return 0;
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return io->tgt_io.state;
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}
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static int
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efct_lio_sg_map(struct efct_io *io)
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{
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struct efct_scsi_tgt_io *ocp = &io->tgt_io;
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struct se_cmd *cmd = &ocp->cmd;
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ocp->seg_map_cnt = pci_map_sg(io->efct->pci, cmd->t_data_sg,
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cmd->t_data_nents, cmd->data_direction);
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if (ocp->seg_map_cnt == 0)
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return -EFAULT;
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return 0;
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}
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static void
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efct_lio_sg_unmap(struct efct_io *io)
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{
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struct efct_scsi_tgt_io *ocp = &io->tgt_io;
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struct se_cmd *cmd = &ocp->cmd;
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if (WARN_ON(!ocp->seg_map_cnt || !cmd->t_data_sg))
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return;
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pci_unmap_sg(io->efct->pci, cmd->t_data_sg,
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ocp->seg_map_cnt, cmd->data_direction);
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ocp->seg_map_cnt = 0;
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}
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static int
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efct_lio_status_done(struct efct_io *io,
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enum efct_scsi_io_status scsi_status,
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u32 flags, void *arg)
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{
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struct efct_scsi_tgt_io *ocp = &io->tgt_io;
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efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_RSP_DONE);
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if (scsi_status != EFCT_SCSI_STATUS_GOOD) {
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efct_lio_io_printf(io, "callback completed with error=%d\n",
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scsi_status);
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ocp->err = scsi_status;
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}
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if (ocp->seg_map_cnt)
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efct_lio_sg_unmap(io);
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efct_lio_io_printf(io, "status=%d, err=%d flags=0x%x, dir=%d\n",
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scsi_status, ocp->err, flags, ocp->ddir);
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efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
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transport_generic_free_cmd(&io->tgt_io.cmd, 0);
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return 0;
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}
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static int
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efct_lio_datamove_done(struct efct_io *io, enum efct_scsi_io_status scsi_status,
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u32 flags, void *arg);
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static int
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efct_lio_write_pending(struct se_cmd *cmd)
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{
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struct efct_scsi_tgt_io *ocp =
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container_of(cmd, struct efct_scsi_tgt_io, cmd);
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struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
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struct efct_scsi_sgl *sgl = io->sgl;
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struct scatterlist *sg;
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u32 flags = 0, cnt, curcnt;
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u64 length = 0;
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efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_WRITE_PENDING);
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efct_lio_io_printf(io, "trans_state=0x%x se_cmd_flags=0x%x\n",
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cmd->transport_state, cmd->se_cmd_flags);
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if (ocp->seg_cnt == 0) {
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ocp->seg_cnt = cmd->t_data_nents;
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ocp->cur_seg = 0;
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if (efct_lio_sg_map(io)) {
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efct_lio_io_printf(io, "efct_lio_sg_map failed\n");
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return -EFAULT;
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}
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}
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curcnt = (ocp->seg_map_cnt - ocp->cur_seg);
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curcnt = (curcnt < io->sgl_allocated) ? curcnt : io->sgl_allocated;
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/* find current sg */
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for (cnt = 0, sg = cmd->t_data_sg; cnt < ocp->cur_seg; cnt++,
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sg = sg_next(sg))
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;/* do nothing */
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for (cnt = 0; cnt < curcnt; cnt++, sg = sg_next(sg)) {
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sgl[cnt].addr = sg_dma_address(sg);
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sgl[cnt].dif_addr = 0;
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sgl[cnt].len = sg_dma_len(sg);
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length += sgl[cnt].len;
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ocp->cur_seg++;
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}
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if (ocp->cur_seg == ocp->seg_cnt)
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flags = EFCT_SCSI_LAST_DATAPHASE;
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return efct_scsi_recv_wr_data(io, flags, sgl, curcnt, length,
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efct_lio_datamove_done, NULL);
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}
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static int
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efct_lio_queue_data_in(struct se_cmd *cmd)
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{
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struct efct_scsi_tgt_io *ocp =
|
|
container_of(cmd, struct efct_scsi_tgt_io, cmd);
|
|
struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
|
|
struct efct_scsi_sgl *sgl = io->sgl;
|
|
struct scatterlist *sg = NULL;
|
|
uint flags = 0, cnt = 0, curcnt = 0;
|
|
u64 length = 0;
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_QUEUE_DATA_IN);
|
|
|
|
if (ocp->seg_cnt == 0) {
|
|
if (cmd->data_length) {
|
|
ocp->seg_cnt = cmd->t_data_nents;
|
|
ocp->cur_seg = 0;
|
|
if (efct_lio_sg_map(io)) {
|
|
efct_lio_io_printf(io,
|
|
"efct_lio_sg_map failed\n");
|
|
return -EAGAIN;
|
|
}
|
|
} else {
|
|
/* If command length is 0, send the response status */
|
|
struct efct_scsi_cmd_resp rsp;
|
|
|
|
memset(&rsp, 0, sizeof(rsp));
|
|
efct_lio_io_printf(io,
|
|
"cmd : %p length 0, send status\n",
|
|
cmd);
|
|
return efct_scsi_send_resp(io, 0, &rsp,
|
|
efct_lio_status_done, NULL);
|
|
}
|
|
}
|
|
curcnt = min(ocp->seg_map_cnt - ocp->cur_seg, io->sgl_allocated);
|
|
|
|
while (cnt < curcnt) {
|
|
sg = &cmd->t_data_sg[ocp->cur_seg];
|
|
sgl[cnt].addr = sg_dma_address(sg);
|
|
sgl[cnt].dif_addr = 0;
|
|
if (ocp->transferred_len + sg_dma_len(sg) >= cmd->data_length)
|
|
sgl[cnt].len = cmd->data_length - ocp->transferred_len;
|
|
else
|
|
sgl[cnt].len = sg_dma_len(sg);
|
|
|
|
ocp->transferred_len += sgl[cnt].len;
|
|
length += sgl[cnt].len;
|
|
ocp->cur_seg++;
|
|
cnt++;
|
|
if (ocp->transferred_len == cmd->data_length)
|
|
break;
|
|
}
|
|
|
|
if (ocp->transferred_len == cmd->data_length) {
|
|
flags = EFCT_SCSI_LAST_DATAPHASE;
|
|
ocp->seg_cnt = ocp->cur_seg;
|
|
}
|
|
|
|
/* If there is residual, disable Auto Good Response */
|
|
if (cmd->residual_count)
|
|
flags |= EFCT_SCSI_NO_AUTO_RESPONSE;
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RD_DATA);
|
|
|
|
return efct_scsi_send_rd_data(io, flags, sgl, curcnt, length,
|
|
efct_lio_datamove_done, NULL);
|
|
}
|
|
|
|
static void
|
|
efct_lio_send_resp(struct efct_io *io, enum efct_scsi_io_status scsi_status,
|
|
u32 flags)
|
|
{
|
|
struct efct_scsi_cmd_resp rsp;
|
|
struct efct_scsi_tgt_io *ocp = &io->tgt_io;
|
|
struct se_cmd *cmd = &io->tgt_io.cmd;
|
|
int rc;
|
|
|
|
if (flags & EFCT_SCSI_IO_CMPL_RSP_SENT) {
|
|
ocp->rsp_sent = true;
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
|
|
transport_generic_free_cmd(&io->tgt_io.cmd, 0);
|
|
return;
|
|
}
|
|
|
|
/* send check condition if an error occurred */
|
|
memset(&rsp, 0, sizeof(rsp));
|
|
rsp.scsi_status = cmd->scsi_status;
|
|
rsp.sense_data = (uint8_t *)io->tgt_io.sense_buffer;
|
|
rsp.sense_data_length = cmd->scsi_sense_length;
|
|
|
|
/* Check for residual underrun or overrun */
|
|
if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT)
|
|
rsp.residual = -cmd->residual_count;
|
|
else if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT)
|
|
rsp.residual = cmd->residual_count;
|
|
|
|
rc = efct_scsi_send_resp(io, 0, &rsp, efct_lio_status_done, NULL);
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RSP);
|
|
if (rc != 0) {
|
|
efct_lio_io_printf(io, "Read done, send rsp failed %d\n", rc);
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
|
|
transport_generic_free_cmd(&io->tgt_io.cmd, 0);
|
|
} else {
|
|
ocp->rsp_sent = true;
|
|
}
|
|
}
|
|
|
|
static int
|
|
efct_lio_datamove_done(struct efct_io *io, enum efct_scsi_io_status scsi_status,
|
|
u32 flags, void *arg)
|
|
{
|
|
struct efct_scsi_tgt_io *ocp = &io->tgt_io;
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_DATA_DONE);
|
|
if (scsi_status != EFCT_SCSI_STATUS_GOOD) {
|
|
efct_lio_io_printf(io, "callback completed with error=%d\n",
|
|
scsi_status);
|
|
ocp->err = scsi_status;
|
|
}
|
|
efct_lio_io_printf(io, "seg_map_cnt=%d\n", ocp->seg_map_cnt);
|
|
if (ocp->seg_map_cnt) {
|
|
if (ocp->err == EFCT_SCSI_STATUS_GOOD &&
|
|
ocp->cur_seg < ocp->seg_cnt) {
|
|
int rc;
|
|
|
|
efct_lio_io_printf(io, "continuing cmd at segm=%d\n",
|
|
ocp->cur_seg);
|
|
if (ocp->ddir == DMA_TO_DEVICE)
|
|
rc = efct_lio_write_pending(&ocp->cmd);
|
|
else
|
|
rc = efct_lio_queue_data_in(&ocp->cmd);
|
|
if (!rc)
|
|
return 0;
|
|
|
|
ocp->err = EFCT_SCSI_STATUS_ERROR;
|
|
efct_lio_io_printf(io, "could not continue command\n");
|
|
}
|
|
efct_lio_sg_unmap(io);
|
|
}
|
|
|
|
if (io->tgt_io.aborting) {
|
|
efct_lio_io_printf(io, "IO done aborted\n");
|
|
return 0;
|
|
}
|
|
|
|
if (ocp->ddir == DMA_TO_DEVICE) {
|
|
efct_lio_io_printf(io, "Write done, trans_state=0x%x\n",
|
|
io->tgt_io.cmd.transport_state);
|
|
if (scsi_status != EFCT_SCSI_STATUS_GOOD) {
|
|
transport_generic_request_failure(&io->tgt_io.cmd,
|
|
TCM_CHECK_CONDITION_ABORT_CMD);
|
|
efct_set_lio_io_state(io,
|
|
EFCT_LIO_STATE_TGT_GENERIC_REQ_FAILURE);
|
|
} else {
|
|
efct_set_lio_io_state(io,
|
|
EFCT_LIO_STATE_TGT_EXECUTE_CMD);
|
|
target_execute_cmd(&io->tgt_io.cmd);
|
|
}
|
|
} else {
|
|
efct_lio_send_resp(io, scsi_status, flags);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
efct_lio_tmf_done(struct efct_io *io, enum efct_scsi_io_status scsi_status,
|
|
u32 flags, void *arg)
|
|
{
|
|
efct_lio_tmfio_printf(io, "cmd=%p status=%d, flags=0x%x\n",
|
|
&io->tgt_io.cmd, scsi_status, flags);
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_GENERIC_FREE);
|
|
transport_generic_free_cmd(&io->tgt_io.cmd, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
efct_lio_null_tmf_done(struct efct_io *tmfio,
|
|
enum efct_scsi_io_status scsi_status,
|
|
u32 flags, void *arg)
|
|
{
|
|
efct_lio_tmfio_printf(tmfio, "cmd=%p status=%d, flags=0x%x\n",
|
|
&tmfio->tgt_io.cmd, scsi_status, flags);
|
|
|
|
/* free struct efct_io only, no active se_cmd */
|
|
efct_scsi_io_complete(tmfio);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
efct_lio_queue_status(struct se_cmd *cmd)
|
|
{
|
|
struct efct_scsi_cmd_resp rsp;
|
|
struct efct_scsi_tgt_io *ocp =
|
|
container_of(cmd, struct efct_scsi_tgt_io, cmd);
|
|
struct efct_io *io = container_of(ocp, struct efct_io, tgt_io);
|
|
int rc = 0;
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TFO_QUEUE_STATUS);
|
|
efct_lio_io_printf(io,
|
|
"status=0x%x trans_state=0x%x se_cmd_flags=0x%x sns_len=%d\n",
|
|
cmd->scsi_status, cmd->transport_state, cmd->se_cmd_flags,
|
|
cmd->scsi_sense_length);
|
|
|
|
memset(&rsp, 0, sizeof(rsp));
|
|
rsp.scsi_status = cmd->scsi_status;
|
|
rsp.sense_data = (u8 *)io->tgt_io.sense_buffer;
|
|
rsp.sense_data_length = cmd->scsi_sense_length;
|
|
|
|
/* Check for residual underrun or overrun, mark negitive value for
|
|
* underrun to recognize in HW
|
|
*/
|
|
if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT)
|
|
rsp.residual = -cmd->residual_count;
|
|
else if (cmd->se_cmd_flags & SCF_UNDERFLOW_BIT)
|
|
rsp.residual = cmd->residual_count;
|
|
|
|
rc = efct_scsi_send_resp(io, 0, &rsp, efct_lio_status_done, NULL);
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_SEND_RSP);
|
|
if (rc == 0)
|
|
ocp->rsp_sent = true;
|
|
return rc;
|
|
}
|
|
|
|
static void efct_lio_queue_tm_rsp(struct se_cmd *cmd)
|
|
{
|
|
struct efct_scsi_tgt_io *ocp =
|
|
container_of(cmd, struct efct_scsi_tgt_io, cmd);
|
|
struct efct_io *tmfio = container_of(ocp, struct efct_io, tgt_io);
|
|
struct se_tmr_req *se_tmr = cmd->se_tmr_req;
|
|
u8 rspcode;
|
|
|
|
efct_lio_tmfio_printf(tmfio, "cmd=%p function=0x%x tmr->response=%d\n",
|
|
cmd, se_tmr->function, se_tmr->response);
|
|
switch (se_tmr->response) {
|
|
case TMR_FUNCTION_COMPLETE:
|
|
rspcode = EFCT_SCSI_TMF_FUNCTION_COMPLETE;
|
|
break;
|
|
case TMR_TASK_DOES_NOT_EXIST:
|
|
rspcode = EFCT_SCSI_TMF_FUNCTION_IO_NOT_FOUND;
|
|
break;
|
|
case TMR_LUN_DOES_NOT_EXIST:
|
|
rspcode = EFCT_SCSI_TMF_INCORRECT_LOGICAL_UNIT_NUMBER;
|
|
break;
|
|
case TMR_FUNCTION_REJECTED:
|
|
default:
|
|
rspcode = EFCT_SCSI_TMF_FUNCTION_REJECTED;
|
|
break;
|
|
}
|
|
efct_scsi_send_tmf_resp(tmfio, rspcode, NULL, efct_lio_tmf_done, NULL);
|
|
}
|
|
|
|
static struct efct *efct_find_wwpn(u64 wwpn)
|
|
{
|
|
struct efct *efct;
|
|
|
|
/* Search for the HBA that has this WWPN */
|
|
list_for_each_entry(efct, &efct_devices, list_entry) {
|
|
|
|
if (wwpn == efct_get_wwpn(&efct->hw))
|
|
return efct;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct se_wwn *
|
|
efct_lio_make_nport(struct target_fabric_configfs *tf,
|
|
struct config_group *group, const char *name)
|
|
{
|
|
struct efct_lio_nport *lio_nport;
|
|
struct efct *efct;
|
|
int ret;
|
|
u64 wwpn;
|
|
|
|
ret = efct_lio_parse_wwn(name, &wwpn, 0);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
efct = efct_find_wwpn(wwpn);
|
|
if (!efct) {
|
|
pr_err("cannot find EFCT for base wwpn %s\n", name);
|
|
return ERR_PTR(-ENXIO);
|
|
}
|
|
|
|
lio_nport = kzalloc(sizeof(*lio_nport), GFP_KERNEL);
|
|
if (!lio_nport)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
lio_nport->efct = efct;
|
|
lio_nport->wwpn = wwpn;
|
|
efct_format_wwn(lio_nport->wwpn_str, sizeof(lio_nport->wwpn_str),
|
|
"naa.", wwpn);
|
|
efct->tgt_efct.lio_nport = lio_nport;
|
|
|
|
return &lio_nport->nport_wwn;
|
|
}
|
|
|
|
static struct se_wwn *
|
|
efct_lio_npiv_make_nport(struct target_fabric_configfs *tf,
|
|
struct config_group *group, const char *name)
|
|
{
|
|
struct efct_lio_vport *lio_vport;
|
|
struct efct *efct;
|
|
int ret;
|
|
u64 p_wwpn, npiv_wwpn, npiv_wwnn;
|
|
char *p, *pbuf, tmp[128];
|
|
struct efct_lio_vport_list_t *vport_list;
|
|
struct fc_vport *new_fc_vport;
|
|
struct fc_vport_identifiers vport_id;
|
|
unsigned long flags = 0;
|
|
|
|
snprintf(tmp, sizeof(tmp), "%s", name);
|
|
pbuf = &tmp[0];
|
|
|
|
p = strsep(&pbuf, "@");
|
|
|
|
if (!p || !pbuf) {
|
|
pr_err("Unable to find separator operator(@)\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
ret = efct_lio_parse_wwn(p, &p_wwpn, 0);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
ret = efct_lio_parse_npiv_wwn(pbuf, strlen(pbuf), &npiv_wwpn,
|
|
&npiv_wwnn);
|
|
if (ret)
|
|
return ERR_PTR(ret);
|
|
|
|
efct = efct_find_wwpn(p_wwpn);
|
|
if (!efct) {
|
|
pr_err("cannot find EFCT for base wwpn %s\n", name);
|
|
return ERR_PTR(-ENXIO);
|
|
}
|
|
|
|
lio_vport = kzalloc(sizeof(*lio_vport), GFP_KERNEL);
|
|
if (!lio_vport)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
lio_vport->efct = efct;
|
|
lio_vport->wwpn = p_wwpn;
|
|
lio_vport->npiv_wwpn = npiv_wwpn;
|
|
lio_vport->npiv_wwnn = npiv_wwnn;
|
|
|
|
efct_format_wwn(lio_vport->wwpn_str, sizeof(lio_vport->wwpn_str),
|
|
"naa.", npiv_wwpn);
|
|
|
|
vport_list = kzalloc(sizeof(*vport_list), GFP_KERNEL);
|
|
if (!vport_list) {
|
|
kfree(lio_vport);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
vport_list->lio_vport = lio_vport;
|
|
|
|
memset(&vport_id, 0, sizeof(vport_id));
|
|
vport_id.port_name = npiv_wwpn;
|
|
vport_id.node_name = npiv_wwnn;
|
|
vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
|
|
vport_id.vport_type = FC_PORTTYPE_NPIV;
|
|
vport_id.disable = false;
|
|
|
|
new_fc_vport = fc_vport_create(efct->shost, 0, &vport_id);
|
|
if (!new_fc_vport) {
|
|
efc_log_err(efct, "fc_vport_create failed\n");
|
|
kfree(lio_vport);
|
|
kfree(vport_list);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
lio_vport->fc_vport = new_fc_vport;
|
|
spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
|
|
INIT_LIST_HEAD(&vport_list->list_entry);
|
|
list_add_tail(&vport_list->list_entry, &efct->tgt_efct.vport_list);
|
|
spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags);
|
|
|
|
return &lio_vport->vport_wwn;
|
|
}
|
|
|
|
static void
|
|
efct_lio_drop_nport(struct se_wwn *wwn)
|
|
{
|
|
struct efct_lio_nport *lio_nport =
|
|
container_of(wwn, struct efct_lio_nport, nport_wwn);
|
|
struct efct *efct = lio_nport->efct;
|
|
|
|
/* only physical nport should exist, free lio_nport allocated
|
|
* in efct_lio_make_nport.
|
|
*/
|
|
kfree(efct->tgt_efct.lio_nport);
|
|
efct->tgt_efct.lio_nport = NULL;
|
|
}
|
|
|
|
static void
|
|
efct_lio_npiv_drop_nport(struct se_wwn *wwn)
|
|
{
|
|
struct efct_lio_vport *lio_vport =
|
|
container_of(wwn, struct efct_lio_vport, vport_wwn);
|
|
struct efct_lio_vport_list_t *vport, *next_vport;
|
|
struct efct *efct = lio_vport->efct;
|
|
unsigned long flags = 0;
|
|
|
|
if (lio_vport->fc_vport)
|
|
fc_vport_terminate(lio_vport->fc_vport);
|
|
|
|
spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
|
|
|
|
list_for_each_entry_safe(vport, next_vport, &efct->tgt_efct.vport_list,
|
|
list_entry) {
|
|
if (vport->lio_vport == lio_vport) {
|
|
list_del(&vport->list_entry);
|
|
kfree(vport->lio_vport);
|
|
kfree(vport);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags);
|
|
}
|
|
|
|
static struct se_portal_group *
|
|
efct_lio_make_tpg(struct se_wwn *wwn, const char *name)
|
|
{
|
|
struct efct_lio_nport *lio_nport =
|
|
container_of(wwn, struct efct_lio_nport, nport_wwn);
|
|
struct efct_lio_tpg *tpg;
|
|
struct efct *efct;
|
|
unsigned long n;
|
|
int ret;
|
|
|
|
if (strstr(name, "tpgt_") != name)
|
|
return ERR_PTR(-EINVAL);
|
|
if (kstrtoul(name + 5, 10, &n) || n > USHRT_MAX)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
tpg = kzalloc(sizeof(*tpg), GFP_KERNEL);
|
|
if (!tpg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
tpg->nport = lio_nport;
|
|
tpg->tpgt = n;
|
|
tpg->enabled = false;
|
|
|
|
tpg->tpg_attrib.generate_node_acls = 1;
|
|
tpg->tpg_attrib.demo_mode_write_protect = 1;
|
|
tpg->tpg_attrib.cache_dynamic_acls = 1;
|
|
tpg->tpg_attrib.demo_mode_login_only = 1;
|
|
tpg->tpg_attrib.session_deletion_wait = 1;
|
|
|
|
ret = core_tpg_register(wwn, &tpg->tpg, SCSI_PROTOCOL_FCP);
|
|
if (ret < 0) {
|
|
kfree(tpg);
|
|
return NULL;
|
|
}
|
|
efct = lio_nport->efct;
|
|
efct->tgt_efct.tpg = tpg;
|
|
efc_log_debug(efct, "create portal group %d\n", tpg->tpgt);
|
|
|
|
xa_init(&efct->lookup);
|
|
return &tpg->tpg;
|
|
}
|
|
|
|
static void
|
|
efct_lio_drop_tpg(struct se_portal_group *se_tpg)
|
|
{
|
|
struct efct_lio_tpg *tpg =
|
|
container_of(se_tpg, struct efct_lio_tpg, tpg);
|
|
|
|
struct efct *efct = tpg->nport->efct;
|
|
|
|
efc_log_debug(efct, "drop portal group %d\n", tpg->tpgt);
|
|
tpg->nport->efct->tgt_efct.tpg = NULL;
|
|
core_tpg_deregister(se_tpg);
|
|
xa_destroy(&efct->lookup);
|
|
kfree(tpg);
|
|
}
|
|
|
|
static struct se_portal_group *
|
|
efct_lio_npiv_make_tpg(struct se_wwn *wwn, const char *name)
|
|
{
|
|
struct efct_lio_vport *lio_vport =
|
|
container_of(wwn, struct efct_lio_vport, vport_wwn);
|
|
struct efct_lio_tpg *tpg;
|
|
struct efct *efct;
|
|
unsigned long n;
|
|
int ret;
|
|
|
|
efct = lio_vport->efct;
|
|
if (strstr(name, "tpgt_") != name)
|
|
return ERR_PTR(-EINVAL);
|
|
if (kstrtoul(name + 5, 10, &n) || n > USHRT_MAX)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if (n != 1) {
|
|
efc_log_err(efct, "Invalid tpgt index: %ld provided\n", n);
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
tpg = kzalloc(sizeof(*tpg), GFP_KERNEL);
|
|
if (!tpg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
tpg->vport = lio_vport;
|
|
tpg->tpgt = n;
|
|
tpg->enabled = false;
|
|
|
|
tpg->tpg_attrib.generate_node_acls = 1;
|
|
tpg->tpg_attrib.demo_mode_write_protect = 1;
|
|
tpg->tpg_attrib.cache_dynamic_acls = 1;
|
|
tpg->tpg_attrib.demo_mode_login_only = 1;
|
|
tpg->tpg_attrib.session_deletion_wait = 1;
|
|
|
|
ret = core_tpg_register(wwn, &tpg->tpg, SCSI_PROTOCOL_FCP);
|
|
|
|
if (ret < 0) {
|
|
kfree(tpg);
|
|
return NULL;
|
|
}
|
|
lio_vport->tpg = tpg;
|
|
efc_log_debug(efct, "create vport portal group %d\n", tpg->tpgt);
|
|
|
|
return &tpg->tpg;
|
|
}
|
|
|
|
static void
|
|
efct_lio_npiv_drop_tpg(struct se_portal_group *se_tpg)
|
|
{
|
|
struct efct_lio_tpg *tpg =
|
|
container_of(se_tpg, struct efct_lio_tpg, tpg);
|
|
|
|
efc_log_debug(tpg->vport->efct, "drop npiv portal group %d\n",
|
|
tpg->tpgt);
|
|
core_tpg_deregister(se_tpg);
|
|
kfree(tpg);
|
|
}
|
|
|
|
static int
|
|
efct_lio_init_nodeacl(struct se_node_acl *se_nacl, const char *name)
|
|
{
|
|
struct efct_lio_nacl *nacl;
|
|
u64 wwnn;
|
|
|
|
if (efct_lio_parse_wwn(name, &wwnn, 0) < 0)
|
|
return -EINVAL;
|
|
|
|
nacl = container_of(se_nacl, struct efct_lio_nacl, se_node_acl);
|
|
nacl->nport_wwnn = wwnn;
|
|
|
|
efct_format_wwn(nacl->nport_name, sizeof(nacl->nport_name), "", wwnn);
|
|
return 0;
|
|
}
|
|
|
|
static int efct_lio_check_demo_mode_login_only(struct se_portal_group *stpg)
|
|
{
|
|
struct efct_lio_tpg *tpg = container_of(stpg, struct efct_lio_tpg, tpg);
|
|
|
|
return tpg->tpg_attrib.demo_mode_login_only;
|
|
}
|
|
|
|
static int
|
|
efct_lio_npiv_check_demo_mode_login_only(struct se_portal_group *stpg)
|
|
{
|
|
struct efct_lio_tpg *tpg = container_of(stpg, struct efct_lio_tpg, tpg);
|
|
|
|
return tpg->tpg_attrib.demo_mode_login_only;
|
|
}
|
|
|
|
static struct efct_lio_tpg *
|
|
efct_get_vport_tpg(struct efc_node *node)
|
|
{
|
|
struct efct *efct;
|
|
u64 wwpn = node->nport->wwpn;
|
|
struct efct_lio_vport_list_t *vport, *next;
|
|
struct efct_lio_vport *lio_vport = NULL;
|
|
struct efct_lio_tpg *tpg = NULL;
|
|
unsigned long flags = 0;
|
|
|
|
efct = node->efc->base;
|
|
spin_lock_irqsave(&efct->tgt_efct.efct_lio_lock, flags);
|
|
list_for_each_entry_safe(vport, next, &efct->tgt_efct.vport_list,
|
|
list_entry) {
|
|
lio_vport = vport->lio_vport;
|
|
if (wwpn && lio_vport && lio_vport->npiv_wwpn == wwpn) {
|
|
efc_log_debug(efct, "found tpg on vport\n");
|
|
tpg = lio_vport->tpg;
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&efct->tgt_efct.efct_lio_lock, flags);
|
|
return tpg;
|
|
}
|
|
|
|
static void
|
|
_efct_tgt_node_free(struct kref *arg)
|
|
{
|
|
struct efct_node *tgt_node = container_of(arg, struct efct_node, ref);
|
|
struct efc_node *node = tgt_node->node;
|
|
|
|
efc_scsi_del_initiator_complete(node->efc, node);
|
|
kfree(tgt_node);
|
|
}
|
|
|
|
static int efct_session_cb(struct se_portal_group *se_tpg,
|
|
struct se_session *se_sess, void *private)
|
|
{
|
|
struct efc_node *node = private;
|
|
struct efct_node *tgt_node;
|
|
struct efct *efct = node->efc->base;
|
|
|
|
tgt_node = kzalloc(sizeof(*tgt_node), GFP_KERNEL);
|
|
if (!tgt_node)
|
|
return -ENOMEM;
|
|
|
|
kref_init(&tgt_node->ref);
|
|
tgt_node->release = _efct_tgt_node_free;
|
|
|
|
tgt_node->session = se_sess;
|
|
node->tgt_node = tgt_node;
|
|
tgt_node->efct = efct;
|
|
|
|
tgt_node->node = node;
|
|
|
|
tgt_node->node_fc_id = node->rnode.fc_id;
|
|
tgt_node->port_fc_id = node->nport->fc_id;
|
|
tgt_node->vpi = node->nport->indicator;
|
|
tgt_node->rpi = node->rnode.indicator;
|
|
|
|
spin_lock_init(&tgt_node->active_ios_lock);
|
|
INIT_LIST_HEAD(&tgt_node->active_ios);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int efct_scsi_tgt_new_device(struct efct *efct)
|
|
{
|
|
u32 total_ios;
|
|
|
|
/* Get the max settings */
|
|
efct->tgt_efct.max_sge = sli_get_max_sge(&efct->hw.sli);
|
|
efct->tgt_efct.max_sgl = sli_get_max_sgl(&efct->hw.sli);
|
|
|
|
/* initialize IO watermark fields */
|
|
atomic_set(&efct->tgt_efct.ios_in_use, 0);
|
|
total_ios = efct->hw.config.n_io;
|
|
efc_log_debug(efct, "total_ios=%d\n", total_ios);
|
|
efct->tgt_efct.watermark_min =
|
|
(total_ios * EFCT_WATERMARK_LOW_PCT) / 100;
|
|
efct->tgt_efct.watermark_max =
|
|
(total_ios * EFCT_WATERMARK_HIGH_PCT) / 100;
|
|
atomic_set(&efct->tgt_efct.io_high_watermark,
|
|
efct->tgt_efct.watermark_max);
|
|
atomic_set(&efct->tgt_efct.watermark_hit, 0);
|
|
atomic_set(&efct->tgt_efct.initiator_count, 0);
|
|
|
|
lio_wq = create_singlethread_workqueue("efct_lio_worker");
|
|
if (!lio_wq) {
|
|
efc_log_err(efct, "workqueue create failed\n");
|
|
return -EIO;
|
|
}
|
|
|
|
spin_lock_init(&efct->tgt_efct.efct_lio_lock);
|
|
INIT_LIST_HEAD(&efct->tgt_efct.vport_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int efct_scsi_tgt_del_device(struct efct *efct)
|
|
{
|
|
flush_workqueue(lio_wq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
efct_scsi_tgt_new_nport(struct efc *efc, struct efc_nport *nport)
|
|
{
|
|
struct efct *efct = nport->efc->base;
|
|
|
|
efc_log_debug(efct, "New SPORT: %s bound to %s\n", nport->display_name,
|
|
efct->tgt_efct.lio_nport->wwpn_str);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
efct_scsi_tgt_del_nport(struct efc *efc, struct efc_nport *nport)
|
|
{
|
|
efc_log_debug(efc, "Del SPORT: %s\n", nport->display_name);
|
|
}
|
|
|
|
static void efct_lio_setup_session(struct work_struct *work)
|
|
{
|
|
struct efct_lio_wq_data *wq_data =
|
|
container_of(work, struct efct_lio_wq_data, work);
|
|
struct efct *efct = wq_data->efct;
|
|
struct efc_node *node = wq_data->ptr;
|
|
char wwpn[WWN_NAME_LEN];
|
|
struct efct_lio_tpg *tpg;
|
|
struct efct_node *tgt_node;
|
|
struct se_portal_group *se_tpg;
|
|
struct se_session *se_sess;
|
|
int watermark;
|
|
int ini_count;
|
|
u64 id;
|
|
|
|
/* Check to see if it's belongs to vport,
|
|
* if not get physical port
|
|
*/
|
|
tpg = efct_get_vport_tpg(node);
|
|
if (tpg) {
|
|
se_tpg = &tpg->tpg;
|
|
} else if (efct->tgt_efct.tpg) {
|
|
tpg = efct->tgt_efct.tpg;
|
|
se_tpg = &tpg->tpg;
|
|
} else {
|
|
efc_log_err(efct, "failed to init session\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Format the FCP Initiator port_name into colon
|
|
* separated values to match the format by our explicit
|
|
* ConfigFS NodeACLs.
|
|
*/
|
|
efct_format_wwn(wwpn, sizeof(wwpn), "", efc_node_get_wwpn(node));
|
|
|
|
se_sess = target_setup_session(se_tpg, 0, 0, TARGET_PROT_NORMAL, wwpn,
|
|
node, efct_session_cb);
|
|
if (IS_ERR(se_sess)) {
|
|
efc_log_err(efct, "failed to setup session\n");
|
|
kfree(wq_data);
|
|
efc_scsi_sess_reg_complete(node, -EIO);
|
|
return;
|
|
}
|
|
|
|
tgt_node = node->tgt_node;
|
|
id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id;
|
|
|
|
efc_log_debug(efct, "new initiator sess=%p node=%p id: %llx\n",
|
|
se_sess, node, id);
|
|
|
|
if (xa_err(xa_store(&efct->lookup, id, tgt_node, GFP_KERNEL)))
|
|
efc_log_err(efct, "Node lookup store failed\n");
|
|
|
|
efc_scsi_sess_reg_complete(node, 0);
|
|
|
|
/* update IO watermark: increment initiator count */
|
|
ini_count = atomic_add_return(1, &efct->tgt_efct.initiator_count);
|
|
watermark = efct->tgt_efct.watermark_max -
|
|
ini_count * EFCT_IO_WATERMARK_PER_INITIATOR;
|
|
watermark = (efct->tgt_efct.watermark_min > watermark) ?
|
|
efct->tgt_efct.watermark_min : watermark;
|
|
atomic_set(&efct->tgt_efct.io_high_watermark, watermark);
|
|
|
|
kfree(wq_data);
|
|
}
|
|
|
|
int efct_scsi_new_initiator(struct efc *efc, struct efc_node *node)
|
|
{
|
|
struct efct *efct = node->efc->base;
|
|
struct efct_lio_wq_data *wq_data;
|
|
|
|
/*
|
|
* Since LIO only supports initiator validation at thread level,
|
|
* we are open minded and accept all callers.
|
|
*/
|
|
wq_data = kzalloc(sizeof(*wq_data), GFP_ATOMIC);
|
|
if (!wq_data)
|
|
return -ENOMEM;
|
|
|
|
wq_data->ptr = node;
|
|
wq_data->efct = efct;
|
|
INIT_WORK(&wq_data->work, efct_lio_setup_session);
|
|
queue_work(lio_wq, &wq_data->work);
|
|
return EFC_SCSI_CALL_ASYNC;
|
|
}
|
|
|
|
static void efct_lio_remove_session(struct work_struct *work)
|
|
{
|
|
struct efct_lio_wq_data *wq_data =
|
|
container_of(work, struct efct_lio_wq_data, work);
|
|
struct efct *efct = wq_data->efct;
|
|
struct efc_node *node = wq_data->ptr;
|
|
struct efct_node *tgt_node;
|
|
struct se_session *se_sess;
|
|
|
|
tgt_node = node->tgt_node;
|
|
if (!tgt_node) {
|
|
/* base driver has sent back-to-back requests
|
|
* to unreg session with no intervening
|
|
* register
|
|
*/
|
|
efc_log_err(efct, "unreg session for NULL session\n");
|
|
efc_scsi_del_initiator_complete(node->efc, node);
|
|
return;
|
|
}
|
|
|
|
se_sess = tgt_node->session;
|
|
efc_log_debug(efct, "unreg session se_sess=%p node=%p\n",
|
|
se_sess, node);
|
|
|
|
/* first flag all session commands to complete */
|
|
target_stop_session(se_sess);
|
|
|
|
/* now wait for session commands to complete */
|
|
target_wait_for_sess_cmds(se_sess);
|
|
target_remove_session(se_sess);
|
|
tgt_node->session = NULL;
|
|
node->tgt_node = NULL;
|
|
kref_put(&tgt_node->ref, tgt_node->release);
|
|
|
|
kfree(wq_data);
|
|
}
|
|
|
|
int efct_scsi_del_initiator(struct efc *efc, struct efc_node *node, int reason)
|
|
{
|
|
struct efct *efct = node->efc->base;
|
|
struct efct_node *tgt_node = node->tgt_node;
|
|
struct efct_lio_wq_data *wq_data;
|
|
int watermark;
|
|
int ini_count;
|
|
u64 id;
|
|
|
|
if (reason == EFCT_SCSI_INITIATOR_MISSING)
|
|
return EFC_SCSI_CALL_COMPLETE;
|
|
|
|
if (!tgt_node) {
|
|
efc_log_err(efct, "tgt_node is NULL\n");
|
|
return -EIO;
|
|
}
|
|
|
|
wq_data = kzalloc(sizeof(*wq_data), GFP_ATOMIC);
|
|
if (!wq_data)
|
|
return -ENOMEM;
|
|
|
|
id = (u64) tgt_node->port_fc_id << 32 | tgt_node->node_fc_id;
|
|
xa_erase(&efct->lookup, id);
|
|
|
|
wq_data->ptr = node;
|
|
wq_data->efct = efct;
|
|
INIT_WORK(&wq_data->work, efct_lio_remove_session);
|
|
queue_work(lio_wq, &wq_data->work);
|
|
|
|
/*
|
|
* update IO watermark: decrement initiator count
|
|
*/
|
|
ini_count = atomic_sub_return(1, &efct->tgt_efct.initiator_count);
|
|
|
|
watermark = efct->tgt_efct.watermark_max -
|
|
ini_count * EFCT_IO_WATERMARK_PER_INITIATOR;
|
|
watermark = (efct->tgt_efct.watermark_min > watermark) ?
|
|
efct->tgt_efct.watermark_min : watermark;
|
|
atomic_set(&efct->tgt_efct.io_high_watermark, watermark);
|
|
|
|
return EFC_SCSI_CALL_ASYNC;
|
|
}
|
|
|
|
void efct_scsi_recv_cmd(struct efct_io *io, uint64_t lun, u8 *cdb,
|
|
u32 cdb_len, u32 flags)
|
|
{
|
|
struct efct_scsi_tgt_io *ocp = &io->tgt_io;
|
|
struct se_cmd *se_cmd = &io->tgt_io.cmd;
|
|
struct efct *efct = io->efct;
|
|
char *ddir;
|
|
struct efct_node *tgt_node;
|
|
struct se_session *se_sess;
|
|
int rc = 0;
|
|
|
|
memset(ocp, 0, sizeof(struct efct_scsi_tgt_io));
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_SCSI_RECV_CMD);
|
|
atomic_add_return(1, &efct->tgt_efct.ios_in_use);
|
|
|
|
/* set target timeout */
|
|
io->timeout = efct->target_io_timer_sec;
|
|
|
|
if (flags & EFCT_SCSI_CMD_SIMPLE)
|
|
ocp->task_attr = TCM_SIMPLE_TAG;
|
|
else if (flags & EFCT_SCSI_CMD_HEAD_OF_QUEUE)
|
|
ocp->task_attr = TCM_HEAD_TAG;
|
|
else if (flags & EFCT_SCSI_CMD_ORDERED)
|
|
ocp->task_attr = TCM_ORDERED_TAG;
|
|
else if (flags & EFCT_SCSI_CMD_ACA)
|
|
ocp->task_attr = TCM_ACA_TAG;
|
|
|
|
switch (flags & (EFCT_SCSI_CMD_DIR_IN | EFCT_SCSI_CMD_DIR_OUT)) {
|
|
case EFCT_SCSI_CMD_DIR_IN:
|
|
ddir = "FROM_INITIATOR";
|
|
ocp->ddir = DMA_TO_DEVICE;
|
|
break;
|
|
case EFCT_SCSI_CMD_DIR_OUT:
|
|
ddir = "TO_INITIATOR";
|
|
ocp->ddir = DMA_FROM_DEVICE;
|
|
break;
|
|
case EFCT_SCSI_CMD_DIR_IN | EFCT_SCSI_CMD_DIR_OUT:
|
|
ddir = "BIDIR";
|
|
ocp->ddir = DMA_BIDIRECTIONAL;
|
|
break;
|
|
default:
|
|
ddir = "NONE";
|
|
ocp->ddir = DMA_NONE;
|
|
break;
|
|
}
|
|
|
|
ocp->lun = lun;
|
|
efct_lio_io_printf(io, "new cmd=0x%x ddir=%s dl=%u\n",
|
|
cdb[0], ddir, io->exp_xfer_len);
|
|
|
|
tgt_node = io->node;
|
|
se_sess = tgt_node->session;
|
|
if (!se_sess) {
|
|
efc_log_err(efct, "No session found to submit IO se_cmd: %p\n",
|
|
&ocp->cmd);
|
|
efct_scsi_io_free(io);
|
|
return;
|
|
}
|
|
|
|
efct_set_lio_io_state(io, EFCT_LIO_STATE_TGT_SUBMIT_CMD);
|
|
rc = target_init_cmd(se_cmd, se_sess, &io->tgt_io.sense_buffer[0],
|
|
ocp->lun, io->exp_xfer_len, ocp->task_attr,
|
|
ocp->ddir, TARGET_SCF_ACK_KREF);
|
|
if (rc) {
|
|
efc_log_err(efct, "failed to init cmd se_cmd: %p\n", se_cmd);
|
|
efct_scsi_io_free(io);
|
|
return;
|
|
}
|
|
|
|
if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0,
|
|
NULL, 0, GFP_ATOMIC))
|
|
return;
|
|
|
|
target_submit(se_cmd);
|
|
}
|
|
|
|
int
|
|
efct_scsi_recv_tmf(struct efct_io *tmfio, u32 lun, enum efct_scsi_tmf_cmd cmd,
|
|
struct efct_io *io_to_abort, u32 flags)
|
|
{
|
|
unsigned char tmr_func;
|
|
struct efct *efct = tmfio->efct;
|
|
struct efct_scsi_tgt_io *ocp = &tmfio->tgt_io;
|
|
struct efct_node *tgt_node;
|
|
struct se_session *se_sess;
|
|
int rc;
|
|
|
|
memset(ocp, 0, sizeof(struct efct_scsi_tgt_io));
|
|
efct_set_lio_io_state(tmfio, EFCT_LIO_STATE_SCSI_RECV_TMF);
|
|
atomic_add_return(1, &efct->tgt_efct.ios_in_use);
|
|
efct_lio_tmfio_printf(tmfio, "%s: new tmf %x lun=%u\n",
|
|
tmfio->display_name, cmd, lun);
|
|
|
|
switch (cmd) {
|
|
case EFCT_SCSI_TMF_ABORT_TASK:
|
|
tmr_func = TMR_ABORT_TASK;
|
|
break;
|
|
case EFCT_SCSI_TMF_ABORT_TASK_SET:
|
|
tmr_func = TMR_ABORT_TASK_SET;
|
|
break;
|
|
case EFCT_SCSI_TMF_CLEAR_TASK_SET:
|
|
tmr_func = TMR_CLEAR_TASK_SET;
|
|
break;
|
|
case EFCT_SCSI_TMF_LOGICAL_UNIT_RESET:
|
|
tmr_func = TMR_LUN_RESET;
|
|
break;
|
|
case EFCT_SCSI_TMF_CLEAR_ACA:
|
|
tmr_func = TMR_CLEAR_ACA;
|
|
break;
|
|
case EFCT_SCSI_TMF_TARGET_RESET:
|
|
tmr_func = TMR_TARGET_WARM_RESET;
|
|
break;
|
|
case EFCT_SCSI_TMF_QUERY_ASYNCHRONOUS_EVENT:
|
|
case EFCT_SCSI_TMF_QUERY_TASK_SET:
|
|
default:
|
|
goto tmf_fail;
|
|
}
|
|
|
|
tmfio->tgt_io.tmf = tmr_func;
|
|
tmfio->tgt_io.lun = lun;
|
|
tmfio->tgt_io.io_to_abort = io_to_abort;
|
|
|
|
tgt_node = tmfio->node;
|
|
|
|
se_sess = tgt_node->session;
|
|
if (!se_sess)
|
|
return 0;
|
|
|
|
rc = target_submit_tmr(&ocp->cmd, se_sess, NULL, lun, ocp, tmr_func,
|
|
GFP_ATOMIC, tmfio->init_task_tag, TARGET_SCF_ACK_KREF);
|
|
|
|
efct_set_lio_io_state(tmfio, EFCT_LIO_STATE_TGT_SUBMIT_TMR);
|
|
if (rc)
|
|
goto tmf_fail;
|
|
|
|
return 0;
|
|
|
|
tmf_fail:
|
|
efct_scsi_send_tmf_resp(tmfio, EFCT_SCSI_TMF_FUNCTION_REJECTED,
|
|
NULL, efct_lio_null_tmf_done, NULL);
|
|
return 0;
|
|
}
|
|
|
|
/* Start items for efct_lio_tpg_attrib_cit */
|
|
|
|
#define DEF_EFCT_TPG_ATTRIB(name) \
|
|
\
|
|
static ssize_t efct_lio_tpg_attrib_##name##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = to_tpg(item); \
|
|
struct efct_lio_tpg *tpg = container_of(se_tpg, \
|
|
struct efct_lio_tpg, tpg); \
|
|
\
|
|
return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
|
|
} \
|
|
\
|
|
static ssize_t efct_lio_tpg_attrib_##name##_store( \
|
|
struct config_item *item, const char *page, size_t count) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = to_tpg(item); \
|
|
struct efct_lio_tpg *tpg = container_of(se_tpg, \
|
|
struct efct_lio_tpg, tpg); \
|
|
struct efct_lio_tpg_attrib *a = &tpg->tpg_attrib; \
|
|
unsigned long val; \
|
|
int ret; \
|
|
\
|
|
ret = kstrtoul(page, 0, &val); \
|
|
if (ret < 0) { \
|
|
pr_err("kstrtoul() failed with ret: %d\n", ret); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
if (val != 0 && val != 1) { \
|
|
pr_err("Illegal boolean value %lu\n", val); \
|
|
return -EINVAL; \
|
|
} \
|
|
\
|
|
a->name = val; \
|
|
\
|
|
return count; \
|
|
} \
|
|
CONFIGFS_ATTR(efct_lio_tpg_attrib_, name)
|
|
|
|
DEF_EFCT_TPG_ATTRIB(generate_node_acls);
|
|
DEF_EFCT_TPG_ATTRIB(cache_dynamic_acls);
|
|
DEF_EFCT_TPG_ATTRIB(demo_mode_write_protect);
|
|
DEF_EFCT_TPG_ATTRIB(prod_mode_write_protect);
|
|
DEF_EFCT_TPG_ATTRIB(demo_mode_login_only);
|
|
DEF_EFCT_TPG_ATTRIB(session_deletion_wait);
|
|
|
|
static struct configfs_attribute *efct_lio_tpg_attrib_attrs[] = {
|
|
&efct_lio_tpg_attrib_attr_generate_node_acls,
|
|
&efct_lio_tpg_attrib_attr_cache_dynamic_acls,
|
|
&efct_lio_tpg_attrib_attr_demo_mode_write_protect,
|
|
&efct_lio_tpg_attrib_attr_prod_mode_write_protect,
|
|
&efct_lio_tpg_attrib_attr_demo_mode_login_only,
|
|
&efct_lio_tpg_attrib_attr_session_deletion_wait,
|
|
NULL,
|
|
};
|
|
|
|
#define DEF_EFCT_NPIV_TPG_ATTRIB(name) \
|
|
\
|
|
static ssize_t efct_lio_npiv_tpg_attrib_##name##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = to_tpg(item); \
|
|
struct efct_lio_tpg *tpg = container_of(se_tpg, \
|
|
struct efct_lio_tpg, tpg); \
|
|
\
|
|
return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
|
|
} \
|
|
\
|
|
static ssize_t efct_lio_npiv_tpg_attrib_##name##_store( \
|
|
struct config_item *item, const char *page, size_t count) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = to_tpg(item); \
|
|
struct efct_lio_tpg *tpg = container_of(se_tpg, \
|
|
struct efct_lio_tpg, tpg); \
|
|
struct efct_lio_tpg_attrib *a = &tpg->tpg_attrib; \
|
|
unsigned long val; \
|
|
int ret; \
|
|
\
|
|
ret = kstrtoul(page, 0, &val); \
|
|
if (ret < 0) { \
|
|
pr_err("kstrtoul() failed with ret: %d\n", ret); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
if (val != 0 && val != 1) { \
|
|
pr_err("Illegal boolean value %lu\n", val); \
|
|
return -EINVAL; \
|
|
} \
|
|
\
|
|
a->name = val; \
|
|
\
|
|
return count; \
|
|
} \
|
|
CONFIGFS_ATTR(efct_lio_npiv_tpg_attrib_, name)
|
|
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(generate_node_acls);
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(cache_dynamic_acls);
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(demo_mode_write_protect);
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(prod_mode_write_protect);
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(demo_mode_login_only);
|
|
DEF_EFCT_NPIV_TPG_ATTRIB(session_deletion_wait);
|
|
|
|
static struct configfs_attribute *efct_lio_npiv_tpg_attrib_attrs[] = {
|
|
&efct_lio_npiv_tpg_attrib_attr_generate_node_acls,
|
|
&efct_lio_npiv_tpg_attrib_attr_cache_dynamic_acls,
|
|
&efct_lio_npiv_tpg_attrib_attr_demo_mode_write_protect,
|
|
&efct_lio_npiv_tpg_attrib_attr_prod_mode_write_protect,
|
|
&efct_lio_npiv_tpg_attrib_attr_demo_mode_login_only,
|
|
&efct_lio_npiv_tpg_attrib_attr_session_deletion_wait,
|
|
NULL,
|
|
};
|
|
|
|
CONFIGFS_ATTR(efct_lio_tpg_, enable);
|
|
static struct configfs_attribute *efct_lio_tpg_attrs[] = {
|
|
&efct_lio_tpg_attr_enable, NULL };
|
|
CONFIGFS_ATTR(efct_lio_npiv_tpg_, enable);
|
|
static struct configfs_attribute *efct_lio_npiv_tpg_attrs[] = {
|
|
&efct_lio_npiv_tpg_attr_enable, NULL };
|
|
|
|
static const struct target_core_fabric_ops efct_lio_ops = {
|
|
.module = THIS_MODULE,
|
|
.fabric_name = "efct",
|
|
.node_acl_size = sizeof(struct efct_lio_nacl),
|
|
.max_data_sg_nents = 65535,
|
|
.tpg_get_wwn = efct_lio_get_fabric_wwn,
|
|
.tpg_get_tag = efct_lio_get_tag,
|
|
.fabric_init_nodeacl = efct_lio_init_nodeacl,
|
|
.tpg_check_demo_mode = efct_lio_check_demo_mode,
|
|
.tpg_check_demo_mode_cache = efct_lio_check_demo_mode_cache,
|
|
.tpg_check_demo_mode_write_protect = efct_lio_check_demo_write_protect,
|
|
.tpg_check_prod_mode_write_protect = efct_lio_check_prod_write_protect,
|
|
.tpg_get_inst_index = efct_lio_tpg_get_inst_index,
|
|
.check_stop_free = efct_lio_check_stop_free,
|
|
.aborted_task = efct_lio_aborted_task,
|
|
.release_cmd = efct_lio_release_cmd,
|
|
.close_session = efct_lio_close_session,
|
|
.sess_get_index = efct_lio_sess_get_index,
|
|
.write_pending = efct_lio_write_pending,
|
|
.set_default_node_attributes = efct_lio_set_default_node_attrs,
|
|
.get_cmd_state = efct_lio_get_cmd_state,
|
|
.queue_data_in = efct_lio_queue_data_in,
|
|
.queue_status = efct_lio_queue_status,
|
|
.queue_tm_rsp = efct_lio_queue_tm_rsp,
|
|
.fabric_make_wwn = efct_lio_make_nport,
|
|
.fabric_drop_wwn = efct_lio_drop_nport,
|
|
.fabric_make_tpg = efct_lio_make_tpg,
|
|
.fabric_drop_tpg = efct_lio_drop_tpg,
|
|
.tpg_check_demo_mode_login_only = efct_lio_check_demo_mode_login_only,
|
|
.tpg_check_prot_fabric_only = NULL,
|
|
.sess_get_initiator_sid = NULL,
|
|
.tfc_tpg_base_attrs = efct_lio_tpg_attrs,
|
|
.tfc_tpg_attrib_attrs = efct_lio_tpg_attrib_attrs,
|
|
};
|
|
|
|
static const struct target_core_fabric_ops efct_lio_npiv_ops = {
|
|
.module = THIS_MODULE,
|
|
.fabric_name = "efct_npiv",
|
|
.node_acl_size = sizeof(struct efct_lio_nacl),
|
|
.max_data_sg_nents = 65535,
|
|
.tpg_get_wwn = efct_lio_get_npiv_fabric_wwn,
|
|
.tpg_get_tag = efct_lio_get_npiv_tag,
|
|
.fabric_init_nodeacl = efct_lio_init_nodeacl,
|
|
.tpg_check_demo_mode = efct_lio_check_demo_mode,
|
|
.tpg_check_demo_mode_cache = efct_lio_check_demo_mode_cache,
|
|
.tpg_check_demo_mode_write_protect =
|
|
efct_lio_npiv_check_demo_write_protect,
|
|
.tpg_check_prod_mode_write_protect =
|
|
efct_lio_npiv_check_prod_write_protect,
|
|
.tpg_get_inst_index = efct_lio_tpg_get_inst_index,
|
|
.check_stop_free = efct_lio_check_stop_free,
|
|
.aborted_task = efct_lio_aborted_task,
|
|
.release_cmd = efct_lio_release_cmd,
|
|
.close_session = efct_lio_close_session,
|
|
.sess_get_index = efct_lio_sess_get_index,
|
|
.write_pending = efct_lio_write_pending,
|
|
.set_default_node_attributes = efct_lio_set_default_node_attrs,
|
|
.get_cmd_state = efct_lio_get_cmd_state,
|
|
.queue_data_in = efct_lio_queue_data_in,
|
|
.queue_status = efct_lio_queue_status,
|
|
.queue_tm_rsp = efct_lio_queue_tm_rsp,
|
|
.fabric_make_wwn = efct_lio_npiv_make_nport,
|
|
.fabric_drop_wwn = efct_lio_npiv_drop_nport,
|
|
.fabric_make_tpg = efct_lio_npiv_make_tpg,
|
|
.fabric_drop_tpg = efct_lio_npiv_drop_tpg,
|
|
.tpg_check_demo_mode_login_only =
|
|
efct_lio_npiv_check_demo_mode_login_only,
|
|
.tpg_check_prot_fabric_only = NULL,
|
|
.sess_get_initiator_sid = NULL,
|
|
.tfc_tpg_base_attrs = efct_lio_npiv_tpg_attrs,
|
|
.tfc_tpg_attrib_attrs = efct_lio_npiv_tpg_attrib_attrs,
|
|
};
|
|
|
|
int efct_scsi_tgt_driver_init(void)
|
|
{
|
|
int rc;
|
|
|
|
/* Register the top level struct config_item_type with TCM core */
|
|
rc = target_register_template(&efct_lio_ops);
|
|
if (rc < 0) {
|
|
pr_err("target_fabric_configfs_register failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
rc = target_register_template(&efct_lio_npiv_ops);
|
|
if (rc < 0) {
|
|
pr_err("target_fabric_configfs_register failed with %d\n", rc);
|
|
target_unregister_template(&efct_lio_ops);
|
|
return rc;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int efct_scsi_tgt_driver_exit(void)
|
|
{
|
|
target_unregister_template(&efct_lio_ops);
|
|
target_unregister_template(&efct_lio_npiv_ops);
|
|
return 0;
|
|
}
|