1952 lines
53 KiB
C
1952 lines
53 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*******************************************************************************
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* This file contains tcm implementation using v4 configfs fabric infrastructure
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* for QLogic target mode HBAs
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*
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* (c) Copyright 2010-2013 Datera, Inc.
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*
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* Author: Nicholas A. Bellinger <nab@daterainc.com>
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*
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* tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
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* the TCM_FC / Open-FCoE.org fabric module.
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*
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* Copyright (c) 2010 Cisco Systems, Inc
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*
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****************************************************************************/
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#include <linux/module.h>
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#include <linux/utsname.h>
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#include <linux/vmalloc.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/configfs.h>
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#include <linux/ctype.h>
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#include <asm/unaligned.h>
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#include <scsi/scsi_host.h>
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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 "qla_def.h"
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#include "qla_target.h"
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#include "tcm_qla2xxx.h"
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static struct workqueue_struct *tcm_qla2xxx_free_wq;
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/*
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* Parse WWN.
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* If strict, we require lower-case hex and colon separators to be sure
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* the name is the same as what would be generated by ft_format_wwn()
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* so the name and wwn are mapped one-to-one.
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*/
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static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
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{
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const char *cp;
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char c;
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u32 nibble;
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u32 byte = 0;
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u32 pos = 0;
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u32 err;
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*wwn = 0;
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for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
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c = *cp;
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if (c == '\n' && cp[1] == '\0')
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continue;
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if (strict && pos++ == 2 && byte++ < 7) {
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pos = 0;
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if (c == ':')
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continue;
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err = 1;
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goto fail;
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}
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if (c == '\0') {
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err = 2;
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if (strict && byte != 8)
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goto fail;
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return cp - name;
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}
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err = 3;
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if (isdigit(c))
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nibble = c - '0';
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else if (isxdigit(c) && (islower(c) || !strict))
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nibble = tolower(c) - 'a' + 10;
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else
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goto fail;
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*wwn = (*wwn << 4) | nibble;
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}
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err = 4;
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fail:
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pr_debug("err %u len %zu pos %u byte %u\n",
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err, cp - name, pos, byte);
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return -1;
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}
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static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
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{
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u8 b[8];
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put_unaligned_be64(wwn, b);
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return snprintf(buf, len,
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"%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
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b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
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}
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/*
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* From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
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*/
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static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
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{
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unsigned int i, j;
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u8 wwn[8];
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memset(wwn, 0, sizeof(wwn));
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/* Validate and store the new name */
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for (i = 0, j = 0; i < 16; i++) {
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int value;
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value = hex_to_bin(*ns++);
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if (value >= 0)
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j = (j << 4) | value;
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else
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return -EINVAL;
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if (i % 2) {
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wwn[i/2] = j & 0xff;
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j = 0;
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}
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}
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*nm = wwn_to_u64(wwn);
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return 0;
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}
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/*
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* This parsing logic follows drivers/scsi/scsi_transport_fc.c:
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* store_fc_host_vport_create()
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*/
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static int tcm_qla2xxx_npiv_parse_wwn(
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const char *name,
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size_t count,
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u64 *wwpn,
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u64 *wwnn)
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{
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unsigned int cnt = count;
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int rc;
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*wwpn = 0;
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*wwnn = 0;
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/* count may include a LF at end of string */
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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 = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
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if (rc != 0)
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return rc;
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rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
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if (rc != 0)
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return rc;
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return 0;
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}
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static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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struct tcm_qla2xxx_lport *lport = tpg->lport;
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return lport->lport_naa_name;
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}
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static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->lport_tpgt;
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}
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static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.generate_node_acls;
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}
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static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.cache_dynamic_acls;
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}
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static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.demo_mode_write_protect;
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}
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static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.prod_mode_write_protect;
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}
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static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.demo_mode_login_only;
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}
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static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->tpg_attrib.fabric_prot_type;
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}
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static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
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{
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struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
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struct tcm_qla2xxx_tpg, se_tpg);
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return tpg->lport_tpgt;
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}
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static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
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{
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struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
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struct qla_tgt_mgmt_cmd, free_work);
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transport_generic_free_cmd(&mcmd->se_cmd, 0);
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}
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/*
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* Called from qla_target_template->free_mcmd(), and will call
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* tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
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* release callback. qla_hw_data->hardware_lock is expected to be held
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*/
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static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
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{
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if (!mcmd)
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return;
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INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
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queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
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}
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static void tcm_qla2xxx_complete_free(struct work_struct *work)
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{
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struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
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cmd->cmd_in_wq = 0;
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WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
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/* To do: protect all tgt_counters manipulations with proper locking. */
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cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
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cmd->trc_flags |= TRC_CMD_FREE;
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cmd->cmd_sent_to_fw = 0;
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transport_generic_free_cmd(&cmd->se_cmd, 0);
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}
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/*
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* Called from qla_target_template->free_cmd(), and will call
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* tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
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* release callback. qla_hw_data->hardware_lock is expected to be held
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*/
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static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
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{
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cmd->qpair->tgt_counters.core_qla_free_cmd++;
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cmd->cmd_in_wq = 1;
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WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
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cmd->trc_flags |= TRC_CMD_DONE;
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INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
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queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
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}
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/*
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* Called from struct target_core_fabric_ops->check_stop_free() context
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*/
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static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
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{
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struct qla_tgt_cmd *cmd;
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if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
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cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
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cmd->trc_flags |= TRC_CMD_CHK_STOP;
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}
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return target_put_sess_cmd(se_cmd);
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}
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/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
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* fabric descriptor @se_cmd command to release
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*/
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static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
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{
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struct qla_tgt_cmd *cmd;
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if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
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struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
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struct qla_tgt_mgmt_cmd, se_cmd);
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qlt_free_mcmd(mcmd);
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return;
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}
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cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
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if (WARN_ON(cmd->cmd_sent_to_fw))
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return;
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qlt_free_cmd(cmd);
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}
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static void tcm_qla2xxx_release_session(struct kref *kref)
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{
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struct fc_port *sess = container_of(kref,
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struct fc_port, sess_kref);
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qlt_unreg_sess(sess);
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}
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static void tcm_qla2xxx_put_sess(struct fc_port *sess)
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{
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if (!sess)
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return;
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kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
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}
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static void tcm_qla2xxx_close_session(struct se_session *se_sess)
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{
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struct fc_port *sess = se_sess->fabric_sess_ptr;
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struct scsi_qla_host *vha;
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unsigned long flags;
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BUG_ON(!sess);
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vha = sess->vha;
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spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
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target_sess_cmd_list_set_waiting(se_sess);
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spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
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sess->explicit_logout = 1;
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tcm_qla2xxx_put_sess(sess);
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}
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static u32 tcm_qla2xxx_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 int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
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{
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struct qla_tgt_cmd *cmd = container_of(se_cmd,
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struct qla_tgt_cmd, se_cmd);
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if (cmd->aborted) {
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/* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
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* can get ahead of this cmd. tcm_qla2xxx_aborted_task
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* already kick start the free.
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*/
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pr_debug("write_pending aborted cmd[%p] refcount %d "
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"transport_state %x, t_state %x, se_cmd_flags %x\n",
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cmd, kref_read(&cmd->se_cmd.cmd_kref),
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cmd->se_cmd.transport_state,
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cmd->se_cmd.t_state,
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cmd->se_cmd.se_cmd_flags);
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transport_generic_request_failure(&cmd->se_cmd,
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TCM_CHECK_CONDITION_ABORT_CMD);
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return 0;
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}
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cmd->trc_flags |= TRC_XFR_RDY;
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cmd->bufflen = se_cmd->data_length;
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cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
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cmd->sg_cnt = se_cmd->t_data_nents;
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cmd->sg = se_cmd->t_data_sg;
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cmd->prot_sg_cnt = se_cmd->t_prot_nents;
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cmd->prot_sg = se_cmd->t_prot_sg;
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cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
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se_cmd->pi_err = 0;
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/*
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* qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
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* the SGL mappings into PCIe memory for incoming FCP WRITE data.
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*/
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return qlt_rdy_to_xfer(cmd);
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}
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static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
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{
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return;
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}
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static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
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{
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if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
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struct qla_tgt_cmd *cmd = container_of(se_cmd,
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struct qla_tgt_cmd, se_cmd);
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return cmd->state;
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}
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return 0;
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}
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/*
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* Called from process context in qla_target.c:qlt_do_work() code
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*/
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static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
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unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
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int data_dir, int bidi)
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{
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struct se_cmd *se_cmd = &cmd->se_cmd;
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struct se_session *se_sess;
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struct fc_port *sess;
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#ifdef CONFIG_TCM_QLA2XXX_DEBUG
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struct se_portal_group *se_tpg;
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struct tcm_qla2xxx_tpg *tpg;
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#endif
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int flags = TARGET_SCF_ACK_KREF;
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if (bidi)
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flags |= TARGET_SCF_BIDI_OP;
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if (se_cmd->cpuid != WORK_CPU_UNBOUND)
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flags |= TARGET_SCF_USE_CPUID;
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sess = cmd->sess;
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if (!sess) {
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pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
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return -EINVAL;
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}
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se_sess = sess->se_sess;
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if (!se_sess) {
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pr_err("Unable to locate active struct se_session\n");
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return -EINVAL;
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}
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#ifdef CONFIG_TCM_QLA2XXX_DEBUG
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se_tpg = se_sess->se_tpg;
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tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
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if (unlikely(tpg->tpg_attrib.jam_host)) {
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/* return, and dont run target_submit_cmd,discarding command */
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return 0;
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}
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#endif
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cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
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return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
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cmd->unpacked_lun, data_length, fcp_task_attr,
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data_dir, flags);
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}
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static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
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{
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struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
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/*
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* Ensure that the complete FCP WRITE payload has been received.
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* Otherwise return an exception via CHECK_CONDITION status.
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*/
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cmd->cmd_in_wq = 0;
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cmd->cmd_sent_to_fw = 0;
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if (cmd->aborted) {
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transport_generic_request_failure(&cmd->se_cmd,
|
|
TCM_CHECK_CONDITION_ABORT_CMD);
|
|
return;
|
|
}
|
|
|
|
cmd->qpair->tgt_counters.qla_core_ret_ctio++;
|
|
if (!cmd->write_data_transferred) {
|
|
switch (cmd->dif_err_code) {
|
|
case DIF_ERR_GRD:
|
|
cmd->se_cmd.pi_err =
|
|
TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
|
|
break;
|
|
case DIF_ERR_REF:
|
|
cmd->se_cmd.pi_err =
|
|
TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
|
|
break;
|
|
case DIF_ERR_APP:
|
|
cmd->se_cmd.pi_err =
|
|
TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
|
|
break;
|
|
case DIF_ERR_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (cmd->se_cmd.pi_err)
|
|
transport_generic_request_failure(&cmd->se_cmd,
|
|
cmd->se_cmd.pi_err);
|
|
else
|
|
transport_generic_request_failure(&cmd->se_cmd,
|
|
TCM_CHECK_CONDITION_ABORT_CMD);
|
|
|
|
return;
|
|
}
|
|
|
|
return target_execute_cmd(&cmd->se_cmd);
|
|
}
|
|
|
|
/*
|
|
* Called from qla_target.c:qlt_do_ctio_completion()
|
|
*/
|
|
static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
|
|
{
|
|
cmd->trc_flags |= TRC_DATA_IN;
|
|
cmd->cmd_in_wq = 1;
|
|
INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
|
|
queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
|
|
}
|
|
|
|
static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
|
|
uint16_t *pfw_prot_opts)
|
|
{
|
|
struct se_cmd *se_cmd = &cmd->se_cmd;
|
|
|
|
if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
|
|
*pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
|
|
|
|
if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
|
|
*pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Called from qla_target.c:qlt_issue_task_mgmt()
|
|
*/
|
|
static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
|
|
uint16_t tmr_func, uint32_t tag)
|
|
{
|
|
struct fc_port *sess = mcmd->sess;
|
|
struct se_cmd *se_cmd = &mcmd->se_cmd;
|
|
int transl_tmr_func = 0;
|
|
int flags = TARGET_SCF_ACK_KREF;
|
|
|
|
switch (tmr_func) {
|
|
case QLA_TGT_ABTS:
|
|
pr_debug("%ld: ABTS received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_ABORT_TASK;
|
|
flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
|
|
break;
|
|
case QLA_TGT_2G_ABORT_TASK:
|
|
pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_ABORT_TASK;
|
|
break;
|
|
case QLA_TGT_CLEAR_ACA:
|
|
pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_CLEAR_ACA;
|
|
break;
|
|
case QLA_TGT_TARGET_RESET:
|
|
pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_TARGET_WARM_RESET;
|
|
break;
|
|
case QLA_TGT_LUN_RESET:
|
|
pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_LUN_RESET;
|
|
break;
|
|
case QLA_TGT_CLEAR_TS:
|
|
pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_CLEAR_TASK_SET;
|
|
break;
|
|
case QLA_TGT_ABORT_TS:
|
|
pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
|
|
transl_tmr_func = TMR_ABORT_TASK_SET;
|
|
break;
|
|
default:
|
|
pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
|
|
sess->vha->host_no, tmr_func);
|
|
return -ENOSYS;
|
|
}
|
|
|
|
return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
|
|
transl_tmr_func, GFP_ATOMIC, tag, flags);
|
|
}
|
|
|
|
static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
|
|
uint64_t tag)
|
|
{
|
|
struct qla_tgt_cmd *cmd = NULL;
|
|
struct se_cmd *secmd;
|
|
unsigned long flags;
|
|
|
|
if (!sess->se_sess)
|
|
return NULL;
|
|
|
|
spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
|
|
list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
|
|
/* skip task management functions, including tmr->task_cmd */
|
|
if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
|
|
continue;
|
|
|
|
if (secmd->tag == tag) {
|
|
cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
|
|
|
|
return cmd;
|
|
}
|
|
|
|
static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
|
|
{
|
|
struct qla_tgt_cmd *cmd = container_of(se_cmd,
|
|
struct qla_tgt_cmd, se_cmd);
|
|
struct scsi_qla_host *vha = cmd->vha;
|
|
|
|
if (cmd->aborted) {
|
|
/* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
|
|
* can get ahead of this cmd. tcm_qla2xxx_aborted_task
|
|
* already kick start the free.
|
|
*/
|
|
pr_debug("queue_data_in aborted cmd[%p] refcount %d "
|
|
"transport_state %x, t_state %x, se_cmd_flags %x\n",
|
|
cmd, kref_read(&cmd->se_cmd.cmd_kref),
|
|
cmd->se_cmd.transport_state,
|
|
cmd->se_cmd.t_state,
|
|
cmd->se_cmd.se_cmd_flags);
|
|
vha->hw->tgt.tgt_ops->free_cmd(cmd);
|
|
return 0;
|
|
}
|
|
|
|
cmd->trc_flags |= TRC_XMIT_DATA;
|
|
cmd->bufflen = se_cmd->data_length;
|
|
cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
|
|
|
|
cmd->sg_cnt = se_cmd->t_data_nents;
|
|
cmd->sg = se_cmd->t_data_sg;
|
|
cmd->offset = 0;
|
|
|
|
cmd->prot_sg_cnt = se_cmd->t_prot_nents;
|
|
cmd->prot_sg = se_cmd->t_prot_sg;
|
|
cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size;
|
|
se_cmd->pi_err = 0;
|
|
|
|
/*
|
|
* Now queue completed DATA_IN the qla2xxx LLD and response ring
|
|
*/
|
|
return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
|
|
se_cmd->scsi_status);
|
|
}
|
|
|
|
static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
|
|
{
|
|
struct qla_tgt_cmd *cmd = container_of(se_cmd,
|
|
struct qla_tgt_cmd, se_cmd);
|
|
struct scsi_qla_host *vha = cmd->vha;
|
|
int xmit_type = QLA_TGT_XMIT_STATUS;
|
|
|
|
if (cmd->aborted) {
|
|
/*
|
|
* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
|
|
* can get ahead of this cmd. tcm_qla2xxx_aborted_task
|
|
* already kick start the free.
|
|
*/
|
|
pr_debug(
|
|
"queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
|
|
cmd, kref_read(&cmd->se_cmd.cmd_kref),
|
|
cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
|
|
cmd->se_cmd.se_cmd_flags);
|
|
vha->hw->tgt.tgt_ops->free_cmd(cmd);
|
|
return 0;
|
|
}
|
|
cmd->bufflen = se_cmd->data_length;
|
|
cmd->sg = NULL;
|
|
cmd->sg_cnt = 0;
|
|
cmd->offset = 0;
|
|
cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
|
|
cmd->trc_flags |= TRC_XMIT_STATUS;
|
|
|
|
if (se_cmd->data_direction == DMA_FROM_DEVICE) {
|
|
/*
|
|
* For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
|
|
* for qla_tgt_xmit_response LLD code
|
|
*/
|
|
if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
|
|
se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
|
|
se_cmd->residual_count = 0;
|
|
}
|
|
se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
|
|
se_cmd->residual_count += se_cmd->data_length;
|
|
|
|
cmd->bufflen = 0;
|
|
}
|
|
/*
|
|
* Now queue status response to qla2xxx LLD code and response ring
|
|
*/
|
|
return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
|
|
}
|
|
|
|
static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
|
|
{
|
|
struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
|
|
struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
|
|
struct qla_tgt_mgmt_cmd, se_cmd);
|
|
|
|
pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
|
|
mcmd, se_tmr->function, se_tmr->response);
|
|
/*
|
|
* Do translation between TCM TM response codes and
|
|
* QLA2xxx FC TM response codes.
|
|
*/
|
|
switch (se_tmr->response) {
|
|
case TMR_FUNCTION_COMPLETE:
|
|
mcmd->fc_tm_rsp = FC_TM_SUCCESS;
|
|
break;
|
|
case TMR_TASK_DOES_NOT_EXIST:
|
|
mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
|
|
break;
|
|
case TMR_FUNCTION_REJECTED:
|
|
mcmd->fc_tm_rsp = FC_TM_REJECT;
|
|
break;
|
|
case TMR_LUN_DOES_NOT_EXIST:
|
|
default:
|
|
mcmd->fc_tm_rsp = FC_TM_FAILED;
|
|
break;
|
|
}
|
|
/*
|
|
* Queue the TM response to QLA2xxx LLD to build a
|
|
* CTIO response packet.
|
|
*/
|
|
qlt_xmit_tm_rsp(mcmd);
|
|
}
|
|
|
|
static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
|
|
{
|
|
struct qla_tgt_cmd *cmd = container_of(se_cmd,
|
|
struct qla_tgt_cmd, se_cmd);
|
|
|
|
if (qlt_abort_cmd(cmd))
|
|
return;
|
|
}
|
|
|
|
static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
|
|
struct tcm_qla2xxx_nacl *, struct fc_port *);
|
|
/*
|
|
* Expected to be called with struct qla_hw_data->tgt.sess_lock held
|
|
*/
|
|
static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
|
|
{
|
|
struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
|
|
struct se_portal_group *se_tpg = se_nacl->se_tpg;
|
|
struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
|
|
struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
|
|
struct tcm_qla2xxx_nacl, se_node_acl);
|
|
void *node;
|
|
|
|
pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
|
|
|
|
node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
|
|
if (WARN_ON(node && (node != se_nacl))) {
|
|
/*
|
|
* The nacl no longer matches what we think it should be.
|
|
* Most likely a new dynamic acl has been added while
|
|
* someone dropped the hardware lock. It clearly is a
|
|
* bug elsewhere, but this bit can't make things worse.
|
|
*/
|
|
btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
|
|
node, GFP_ATOMIC);
|
|
}
|
|
|
|
pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
|
|
se_nacl, nacl->nport_wwnn, nacl->nport_id);
|
|
/*
|
|
* Now clear the se_nacl and session pointers from our HW lport lookup
|
|
* table mapping for this initiator's fabric S_ID and LOOP_ID entries.
|
|
*
|
|
* This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
|
|
* target_wait_for_sess_cmds() before the session waits for outstanding
|
|
* I/O to complete, to avoid a race between session shutdown execution
|
|
* and incoming ATIOs or TMRs picking up a stale se_node_act reference.
|
|
*/
|
|
tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
|
|
}
|
|
|
|
static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
|
|
{
|
|
target_sess_cmd_list_set_waiting(sess->se_sess);
|
|
}
|
|
|
|
static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
|
|
const char *name)
|
|
{
|
|
struct tcm_qla2xxx_nacl *nacl =
|
|
container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
|
|
u64 wwnn;
|
|
|
|
if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
|
|
return -EINVAL;
|
|
|
|
nacl->nport_wwnn = wwnn;
|
|
tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Start items for tcm_qla2xxx_tpg_attrib_cit */
|
|
|
|
#define DEF_QLA_TPG_ATTRIB(name) \
|
|
\
|
|
static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \
|
|
struct config_item *item, char *page) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
|
|
struct tcm_qla2xxx_tpg, se_tpg); \
|
|
\
|
|
return sprintf(page, "%u\n", tpg->tpg_attrib.name); \
|
|
} \
|
|
\
|
|
static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \
|
|
struct config_item *item, const char *page, size_t count) \
|
|
{ \
|
|
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
|
|
struct tcm_qla2xxx_tpg, se_tpg); \
|
|
struct tcm_qla2xxx_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 -EINVAL; \
|
|
} \
|
|
\
|
|
if ((val != 0) && (val != 1)) { \
|
|
pr_err("Illegal boolean value %lu\n", val); \
|
|
return -EINVAL; \
|
|
} \
|
|
\
|
|
a->name = val; \
|
|
\
|
|
return count; \
|
|
} \
|
|
CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
|
|
|
|
DEF_QLA_TPG_ATTRIB(generate_node_acls);
|
|
DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
|
|
DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
|
|
DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
|
|
DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
|
|
#ifdef CONFIG_TCM_QLA2XXX_DEBUG
|
|
DEF_QLA_TPG_ATTRIB(jam_host);
|
|
#endif
|
|
|
|
static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
|
|
&tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
|
|
&tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
|
|
&tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
|
|
&tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
|
|
&tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
|
|
#ifdef CONFIG_TCM_QLA2XXX_DEBUG
|
|
&tcm_qla2xxx_tpg_attrib_attr_jam_host,
|
|
#endif
|
|
NULL,
|
|
};
|
|
|
|
/* End items for tcm_qla2xxx_tpg_attrib_cit */
|
|
|
|
static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_portal_group *se_tpg = to_tpg(item);
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
|
|
return snprintf(page, PAGE_SIZE, "%d\n",
|
|
atomic_read(&tpg->lport_tpg_enabled));
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_portal_group *se_tpg = to_tpg(item);
|
|
struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
|
|
struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct scsi_qla_host *vha = lport->qla_vha;
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
unsigned long op;
|
|
int rc;
|
|
|
|
rc = kstrtoul(page, 0, &op);
|
|
if (rc < 0) {
|
|
pr_err("kstrtoul() returned %d\n", rc);
|
|
return -EINVAL;
|
|
}
|
|
if ((op != 1) && (op != 0)) {
|
|
pr_err("Illegal value for tpg_enable: %lu\n", op);
|
|
return -EINVAL;
|
|
}
|
|
if (op) {
|
|
if (atomic_read(&tpg->lport_tpg_enabled))
|
|
return -EEXIST;
|
|
|
|
atomic_set(&tpg->lport_tpg_enabled, 1);
|
|
qlt_enable_vha(vha);
|
|
} else {
|
|
if (!atomic_read(&tpg->lport_tpg_enabled))
|
|
return count;
|
|
|
|
atomic_set(&tpg->lport_tpg_enabled, 0);
|
|
qlt_stop_phase1(vha->vha_tgt.qla_tgt);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return target_show_dynamic_sessions(to_tpg(item), page);
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_portal_group *se_tpg = to_tpg(item);
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
unsigned long val;
|
|
int ret = kstrtoul(page, 0, &val);
|
|
|
|
if (ret) {
|
|
pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
|
|
return ret;
|
|
}
|
|
if (val != 0 && val != 1 && val != 3) {
|
|
pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
|
|
return -EINVAL;
|
|
}
|
|
tpg->tpg_attrib.fabric_prot_type = val;
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
struct se_portal_group *se_tpg = to_tpg(item);
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
|
|
return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
|
|
}
|
|
|
|
CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
|
|
CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
|
|
CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
|
|
|
|
static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
|
|
&tcm_qla2xxx_tpg_attr_enable,
|
|
&tcm_qla2xxx_tpg_attr_dynamic_sessions,
|
|
&tcm_qla2xxx_tpg_attr_fabric_prot_type,
|
|
NULL,
|
|
};
|
|
|
|
static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
|
|
const char *name)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport = container_of(wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct tcm_qla2xxx_tpg *tpg;
|
|
unsigned long tpgt;
|
|
int ret;
|
|
|
|
if (strstr(name, "tpgt_") != name)
|
|
return ERR_PTR(-EINVAL);
|
|
if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if ((tpgt != 1)) {
|
|
pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
|
|
if (!tpg) {
|
|
pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
tpg->lport = lport;
|
|
tpg->lport_tpgt = tpgt;
|
|
/*
|
|
* By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
|
|
* NodeACLs
|
|
*/
|
|
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.jam_host = 0;
|
|
|
|
ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
|
|
if (ret < 0) {
|
|
kfree(tpg);
|
|
return NULL;
|
|
}
|
|
|
|
lport->tpg_1 = tpg;
|
|
|
|
return &tpg->se_tpg;
|
|
}
|
|
|
|
static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
|
|
{
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
struct tcm_qla2xxx_lport *lport = tpg->lport;
|
|
struct scsi_qla_host *vha = lport->qla_vha;
|
|
/*
|
|
* Call into qla2x_target.c LLD logic to shutdown the active
|
|
* FC Nexuses and disable target mode operation for this qla_hw_data
|
|
*/
|
|
if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
|
|
qlt_stop_phase1(vha->vha_tgt.qla_tgt);
|
|
|
|
core_tpg_deregister(se_tpg);
|
|
/*
|
|
* Clear local TPG=1 pointer for non NPIV mode.
|
|
*/
|
|
lport->tpg_1 = NULL;
|
|
kfree(tpg);
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return tcm_qla2xxx_tpg_enable_show(item, page);
|
|
}
|
|
|
|
static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
|
|
const char *page, size_t count)
|
|
{
|
|
struct se_portal_group *se_tpg = to_tpg(item);
|
|
struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
|
|
struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct scsi_qla_host *vha = lport->qla_vha;
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
unsigned long op;
|
|
int rc;
|
|
|
|
rc = kstrtoul(page, 0, &op);
|
|
if (rc < 0) {
|
|
pr_err("kstrtoul() returned %d\n", rc);
|
|
return -EINVAL;
|
|
}
|
|
if ((op != 1) && (op != 0)) {
|
|
pr_err("Illegal value for tpg_enable: %lu\n", op);
|
|
return -EINVAL;
|
|
}
|
|
if (op) {
|
|
if (atomic_read(&tpg->lport_tpg_enabled))
|
|
return -EEXIST;
|
|
|
|
atomic_set(&tpg->lport_tpg_enabled, 1);
|
|
qlt_enable_vha(vha);
|
|
} else {
|
|
if (!atomic_read(&tpg->lport_tpg_enabled))
|
|
return count;
|
|
|
|
atomic_set(&tpg->lport_tpg_enabled, 0);
|
|
qlt_stop_phase1(vha->vha_tgt.qla_tgt);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
|
|
|
|
static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
|
|
&tcm_qla2xxx_npiv_tpg_attr_enable,
|
|
NULL,
|
|
};
|
|
|
|
static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
|
|
const char *name)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport = container_of(wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct tcm_qla2xxx_tpg *tpg;
|
|
unsigned long tpgt;
|
|
int ret;
|
|
|
|
if (strstr(name, "tpgt_") != name)
|
|
return ERR_PTR(-EINVAL);
|
|
if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
|
|
if (!tpg) {
|
|
pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
tpg->lport = lport;
|
|
tpg->lport_tpgt = tpgt;
|
|
|
|
/*
|
|
* By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
|
|
* NodeACLs
|
|
*/
|
|
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;
|
|
|
|
ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
|
|
if (ret < 0) {
|
|
kfree(tpg);
|
|
return NULL;
|
|
}
|
|
lport->tpg_1 = tpg;
|
|
return &tpg->se_tpg;
|
|
}
|
|
|
|
/*
|
|
* Expected to be called with struct qla_hw_data->tgt.sess_lock held
|
|
*/
|
|
static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
|
|
const be_id_t s_id)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport;
|
|
struct se_node_acl *se_nacl;
|
|
struct tcm_qla2xxx_nacl *nacl;
|
|
u32 key;
|
|
|
|
lport = vha->vha_tgt.target_lport_ptr;
|
|
if (!lport) {
|
|
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
|
|
dump_stack();
|
|
return NULL;
|
|
}
|
|
|
|
key = sid_to_key(s_id);
|
|
pr_debug("find_sess_by_s_id: 0x%06x\n", key);
|
|
|
|
se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
|
|
if (!se_nacl) {
|
|
pr_debug("Unable to locate s_id: 0x%06x\n", key);
|
|
return NULL;
|
|
}
|
|
pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
|
|
se_nacl, se_nacl->initiatorname);
|
|
|
|
nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
|
|
if (!nacl->fc_port) {
|
|
pr_err("Unable to locate struct fc_port\n");
|
|
return NULL;
|
|
}
|
|
|
|
return nacl->fc_port;
|
|
}
|
|
|
|
/*
|
|
* Expected to be called with struct qla_hw_data->tgt.sess_lock held
|
|
*/
|
|
static void tcm_qla2xxx_set_sess_by_s_id(
|
|
struct tcm_qla2xxx_lport *lport,
|
|
struct se_node_acl *new_se_nacl,
|
|
struct tcm_qla2xxx_nacl *nacl,
|
|
struct se_session *se_sess,
|
|
struct fc_port *fc_port,
|
|
be_id_t s_id)
|
|
{
|
|
u32 key;
|
|
void *slot;
|
|
int rc;
|
|
|
|
key = sid_to_key(s_id);
|
|
pr_debug("set_sess_by_s_id: %06x\n", key);
|
|
|
|
slot = btree_lookup32(&lport->lport_fcport_map, key);
|
|
if (!slot) {
|
|
if (new_se_nacl) {
|
|
pr_debug("Setting up new fc_port entry to new_se_nacl\n");
|
|
nacl->nport_id = key;
|
|
rc = btree_insert32(&lport->lport_fcport_map, key,
|
|
new_se_nacl, GFP_ATOMIC);
|
|
if (rc)
|
|
printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
|
|
(int)key);
|
|
} else {
|
|
pr_debug("Wiping nonexisting fc_port entry\n");
|
|
}
|
|
|
|
fc_port->se_sess = se_sess;
|
|
nacl->fc_port = fc_port;
|
|
return;
|
|
}
|
|
|
|
if (nacl->fc_port) {
|
|
if (new_se_nacl == NULL) {
|
|
pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
|
|
btree_remove32(&lport->lport_fcport_map, key);
|
|
nacl->fc_port = NULL;
|
|
return;
|
|
}
|
|
pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
|
|
btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
|
|
fc_port->se_sess = se_sess;
|
|
nacl->fc_port = fc_port;
|
|
return;
|
|
}
|
|
|
|
if (new_se_nacl == NULL) {
|
|
pr_debug("Clearing existing fc_port entry\n");
|
|
btree_remove32(&lport->lport_fcport_map, key);
|
|
return;
|
|
}
|
|
|
|
pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
|
|
btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
|
|
fc_port->se_sess = se_sess;
|
|
nacl->fc_port = fc_port;
|
|
|
|
pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
|
|
nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
|
|
}
|
|
|
|
/*
|
|
* Expected to be called with struct qla_hw_data->tgt.sess_lock held
|
|
*/
|
|
static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
|
|
scsi_qla_host_t *vha,
|
|
const uint16_t loop_id)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport;
|
|
struct se_node_acl *se_nacl;
|
|
struct tcm_qla2xxx_nacl *nacl;
|
|
struct tcm_qla2xxx_fc_loopid *fc_loopid;
|
|
|
|
lport = vha->vha_tgt.target_lport_ptr;
|
|
if (!lport) {
|
|
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
|
|
dump_stack();
|
|
return NULL;
|
|
}
|
|
|
|
pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
|
|
|
|
fc_loopid = lport->lport_loopid_map + loop_id;
|
|
se_nacl = fc_loopid->se_nacl;
|
|
if (!se_nacl) {
|
|
pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
|
|
loop_id);
|
|
return NULL;
|
|
}
|
|
|
|
nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
|
|
|
|
if (!nacl->fc_port) {
|
|
pr_err("Unable to locate struct fc_port\n");
|
|
return NULL;
|
|
}
|
|
|
|
return nacl->fc_port;
|
|
}
|
|
|
|
/*
|
|
* Expected to be called with struct qla_hw_data->tgt.sess_lock held
|
|
*/
|
|
static void tcm_qla2xxx_set_sess_by_loop_id(
|
|
struct tcm_qla2xxx_lport *lport,
|
|
struct se_node_acl *new_se_nacl,
|
|
struct tcm_qla2xxx_nacl *nacl,
|
|
struct se_session *se_sess,
|
|
struct fc_port *fc_port,
|
|
uint16_t loop_id)
|
|
{
|
|
struct se_node_acl *saved_nacl;
|
|
struct tcm_qla2xxx_fc_loopid *fc_loopid;
|
|
|
|
pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
|
|
|
|
fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
|
|
lport->lport_loopid_map)[loop_id];
|
|
|
|
saved_nacl = fc_loopid->se_nacl;
|
|
if (!saved_nacl) {
|
|
pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
|
|
fc_loopid->se_nacl = new_se_nacl;
|
|
if (fc_port->se_sess != se_sess)
|
|
fc_port->se_sess = se_sess;
|
|
if (nacl->fc_port != fc_port)
|
|
nacl->fc_port = fc_port;
|
|
return;
|
|
}
|
|
|
|
if (nacl->fc_port) {
|
|
if (new_se_nacl == NULL) {
|
|
pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
|
|
fc_loopid->se_nacl = NULL;
|
|
nacl->fc_port = NULL;
|
|
return;
|
|
}
|
|
|
|
pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
|
|
fc_loopid->se_nacl = new_se_nacl;
|
|
if (fc_port->se_sess != se_sess)
|
|
fc_port->se_sess = se_sess;
|
|
if (nacl->fc_port != fc_port)
|
|
nacl->fc_port = fc_port;
|
|
return;
|
|
}
|
|
|
|
if (new_se_nacl == NULL) {
|
|
pr_debug("Clearing fc_loopid->se_nacl\n");
|
|
fc_loopid->se_nacl = NULL;
|
|
return;
|
|
}
|
|
|
|
pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
|
|
fc_loopid->se_nacl = new_se_nacl;
|
|
if (fc_port->se_sess != se_sess)
|
|
fc_port->se_sess = se_sess;
|
|
if (nacl->fc_port != fc_port)
|
|
nacl->fc_port = fc_port;
|
|
|
|
pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
|
|
nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
|
|
}
|
|
|
|
/*
|
|
* Should always be called with qla_hw_data->tgt.sess_lock held.
|
|
*/
|
|
static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
|
|
struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
|
|
{
|
|
struct se_session *se_sess = sess->se_sess;
|
|
|
|
tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
|
|
sess, port_id_to_be_id(sess->d_id));
|
|
tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
|
|
sess, sess->loop_id);
|
|
}
|
|
|
|
static void tcm_qla2xxx_free_session(struct fc_port *sess)
|
|
{
|
|
struct qla_tgt *tgt = sess->tgt;
|
|
struct qla_hw_data *ha = tgt->ha;
|
|
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
|
|
struct se_session *se_sess;
|
|
struct tcm_qla2xxx_lport *lport;
|
|
|
|
BUG_ON(in_interrupt());
|
|
|
|
se_sess = sess->se_sess;
|
|
if (!se_sess) {
|
|
pr_err("struct fc_port->se_sess is NULL\n");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
|
|
lport = vha->vha_tgt.target_lport_ptr;
|
|
if (!lport) {
|
|
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
target_wait_for_sess_cmds(se_sess);
|
|
|
|
target_remove_session(se_sess);
|
|
}
|
|
|
|
static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
|
|
struct se_session *se_sess, void *p)
|
|
{
|
|
struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
|
|
struct tcm_qla2xxx_tpg, se_tpg);
|
|
struct tcm_qla2xxx_lport *lport = tpg->lport;
|
|
struct qla_hw_data *ha = lport->qla_vha->hw;
|
|
struct se_node_acl *se_nacl = se_sess->se_node_acl;
|
|
struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
|
|
struct tcm_qla2xxx_nacl, se_node_acl);
|
|
struct fc_port *qlat_sess = p;
|
|
uint16_t loop_id = qlat_sess->loop_id;
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* And now setup se_nacl and session pointers into HW lport internal
|
|
* mappings for fabric S_ID and LOOP_ID.
|
|
*/
|
|
spin_lock_irqsave(&ha->tgt.sess_lock, flags);
|
|
tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
|
|
port_id_to_be_id(qlat_sess->d_id));
|
|
tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
|
|
se_sess, qlat_sess, loop_id);
|
|
spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
|
|
* to locate struct se_node_acl
|
|
*/
|
|
static int tcm_qla2xxx_check_initiator_node_acl(
|
|
scsi_qla_host_t *vha,
|
|
unsigned char *fc_wwpn,
|
|
struct fc_port *qlat_sess)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct tcm_qla2xxx_lport *lport;
|
|
struct tcm_qla2xxx_tpg *tpg;
|
|
struct se_session *se_sess;
|
|
unsigned char port_name[36];
|
|
int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
|
|
TCM_QLA2XXX_DEFAULT_TAGS;
|
|
|
|
lport = vha->vha_tgt.target_lport_ptr;
|
|
if (!lport) {
|
|
pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
|
|
dump_stack();
|
|
return -EINVAL;
|
|
}
|
|
/*
|
|
* Locate the TPG=1 reference..
|
|
*/
|
|
tpg = lport->tpg_1;
|
|
if (!tpg) {
|
|
pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
|
|
return -EINVAL;
|
|
}
|
|
/*
|
|
* Format the FCP Initiator port_name into colon seperated values to
|
|
* match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
|
|
*/
|
|
memset(&port_name, 0, 36);
|
|
snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
|
|
/*
|
|
* Locate our struct se_node_acl either from an explict NodeACL created
|
|
* via ConfigFS, or via running in TPG demo mode.
|
|
*/
|
|
se_sess = target_setup_session(&tpg->se_tpg, num_tags,
|
|
sizeof(struct qla_tgt_cmd),
|
|
TARGET_PROT_ALL, port_name,
|
|
qlat_sess, tcm_qla2xxx_session_cb);
|
|
if (IS_ERR(se_sess))
|
|
return PTR_ERR(se_sess);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
|
|
uint16_t loop_id, bool conf_compl_supported)
|
|
{
|
|
struct qla_tgt *tgt = sess->tgt;
|
|
struct qla_hw_data *ha = tgt->ha;
|
|
scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
|
|
struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
|
|
struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
|
|
struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
|
|
struct tcm_qla2xxx_nacl, se_node_acl);
|
|
u32 key;
|
|
|
|
|
|
if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
|
|
pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
|
|
sess, sess->port_name,
|
|
sess->loop_id, loop_id, sess->d_id.b.domain,
|
|
sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
|
|
s_id.b.area, s_id.b.al_pa);
|
|
|
|
if (sess->loop_id != loop_id) {
|
|
/*
|
|
* Because we can shuffle loop IDs around and we
|
|
* update different sessions non-atomically, we might
|
|
* have overwritten this session's old loop ID
|
|
* already, and we might end up overwriting some other
|
|
* session that will be updated later. So we have to
|
|
* be extra careful and we can't warn about those things...
|
|
*/
|
|
if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
|
|
lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
|
|
|
|
lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
|
|
|
|
sess->loop_id = loop_id;
|
|
}
|
|
|
|
if (sess->d_id.b24 != s_id.b24) {
|
|
key = (((u32) sess->d_id.b.domain << 16) |
|
|
((u32) sess->d_id.b.area << 8) |
|
|
((u32) sess->d_id.b.al_pa));
|
|
|
|
if (btree_lookup32(&lport->lport_fcport_map, key))
|
|
WARN(btree_remove32(&lport->lport_fcport_map, key) !=
|
|
se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
|
|
sess->d_id.b.domain, sess->d_id.b.area,
|
|
sess->d_id.b.al_pa);
|
|
else
|
|
WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
|
|
sess->d_id.b.domain, sess->d_id.b.area,
|
|
sess->d_id.b.al_pa);
|
|
|
|
key = (((u32) s_id.b.domain << 16) |
|
|
((u32) s_id.b.area << 8) |
|
|
((u32) s_id.b.al_pa));
|
|
|
|
if (btree_lookup32(&lport->lport_fcport_map, key)) {
|
|
WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
|
|
s_id.b.domain, s_id.b.area, s_id.b.al_pa);
|
|
btree_update32(&lport->lport_fcport_map, key, se_nacl);
|
|
} else {
|
|
btree_insert32(&lport->lport_fcport_map, key, se_nacl,
|
|
GFP_ATOMIC);
|
|
}
|
|
|
|
sess->d_id = s_id;
|
|
nacl->nport_id = key;
|
|
}
|
|
|
|
sess->conf_compl_supported = conf_compl_supported;
|
|
|
|
}
|
|
|
|
/*
|
|
* Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
|
|
*/
|
|
static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
|
|
.find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag,
|
|
.handle_cmd = tcm_qla2xxx_handle_cmd,
|
|
.handle_data = tcm_qla2xxx_handle_data,
|
|
.handle_tmr = tcm_qla2xxx_handle_tmr,
|
|
.free_cmd = tcm_qla2xxx_free_cmd,
|
|
.free_mcmd = tcm_qla2xxx_free_mcmd,
|
|
.free_session = tcm_qla2xxx_free_session,
|
|
.update_sess = tcm_qla2xxx_update_sess,
|
|
.check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
|
|
.find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
|
|
.find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
|
|
.clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
|
|
.put_sess = tcm_qla2xxx_put_sess,
|
|
.shutdown_sess = tcm_qla2xxx_shutdown_sess,
|
|
.get_dif_tags = tcm_qla2xxx_dif_tags,
|
|
.chk_dif_tags = tcm_qla2xxx_chk_dif_tags,
|
|
};
|
|
|
|
static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
|
|
{
|
|
int rc;
|
|
|
|
rc = btree_init32(&lport->lport_fcport_map);
|
|
if (rc) {
|
|
pr_err("Unable to initialize lport->lport_fcport_map btree\n");
|
|
return rc;
|
|
}
|
|
|
|
lport->lport_loopid_map =
|
|
vzalloc(array_size(65536,
|
|
sizeof(struct tcm_qla2xxx_fc_loopid)));
|
|
if (!lport->lport_loopid_map) {
|
|
pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
|
|
sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
|
|
btree_destroy32(&lport->lport_fcport_map);
|
|
return -ENOMEM;
|
|
}
|
|
pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
|
|
sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
|
|
return 0;
|
|
}
|
|
|
|
static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
|
|
void *target_lport_ptr,
|
|
u64 npiv_wwpn, u64 npiv_wwnn)
|
|
{
|
|
struct qla_hw_data *ha = vha->hw;
|
|
struct tcm_qla2xxx_lport *lport =
|
|
(struct tcm_qla2xxx_lport *)target_lport_ptr;
|
|
/*
|
|
* Setup tgt_ops, local pointer to vha and target_lport_ptr
|
|
*/
|
|
ha->tgt.tgt_ops = &tcm_qla2xxx_template;
|
|
vha->vha_tgt.target_lport_ptr = target_lport_ptr;
|
|
lport->qla_vha = vha;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct se_wwn *tcm_qla2xxx_make_lport(
|
|
struct target_fabric_configfs *tf,
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport;
|
|
u64 wwpn;
|
|
int ret = -ENODEV;
|
|
|
|
if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
|
|
if (!lport) {
|
|
pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
lport->lport_wwpn = wwpn;
|
|
tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
|
|
wwpn);
|
|
sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
|
|
|
|
ret = tcm_qla2xxx_init_lport(lport);
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
ret = qlt_lport_register(lport, wwpn, 0, 0,
|
|
tcm_qla2xxx_lport_register_cb);
|
|
if (ret != 0)
|
|
goto out_lport;
|
|
|
|
return &lport->lport_wwn;
|
|
out_lport:
|
|
vfree(lport->lport_loopid_map);
|
|
btree_destroy32(&lport->lport_fcport_map);
|
|
out:
|
|
kfree(lport);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport = container_of(wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct scsi_qla_host *vha = lport->qla_vha;
|
|
struct se_node_acl *node;
|
|
u32 key = 0;
|
|
|
|
/*
|
|
* Call into qla2x_target.c LLD logic to complete the
|
|
* shutdown of struct qla_tgt after the call to
|
|
* qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
|
|
*/
|
|
if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
|
|
qlt_stop_phase2(vha->vha_tgt.qla_tgt);
|
|
|
|
qlt_lport_deregister(vha);
|
|
|
|
vfree(lport->lport_loopid_map);
|
|
btree_for_each_safe32(&lport->lport_fcport_map, key, node)
|
|
btree_remove32(&lport->lport_fcport_map, key);
|
|
btree_destroy32(&lport->lport_fcport_map);
|
|
kfree(lport);
|
|
}
|
|
|
|
static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
|
|
void *target_lport_ptr,
|
|
u64 npiv_wwpn, u64 npiv_wwnn)
|
|
{
|
|
struct fc_vport *vport;
|
|
struct Scsi_Host *sh = base_vha->host;
|
|
struct scsi_qla_host *npiv_vha;
|
|
struct tcm_qla2xxx_lport *lport =
|
|
(struct tcm_qla2xxx_lport *)target_lport_ptr;
|
|
struct tcm_qla2xxx_lport *base_lport =
|
|
(struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
|
|
struct fc_vport_identifiers vport_id;
|
|
|
|
if (qla_ini_mode_enabled(base_vha)) {
|
|
pr_err("qla2xxx base_vha not enabled for target mode\n");
|
|
return -EPERM;
|
|
}
|
|
|
|
if (!base_lport || !base_lport->tpg_1 ||
|
|
!atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
|
|
pr_err("qla2xxx base_lport or tpg_1 not available\n");
|
|
return -EPERM;
|
|
}
|
|
|
|
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;
|
|
|
|
vport = fc_vport_create(sh, 0, &vport_id);
|
|
if (!vport) {
|
|
pr_err("fc_vport_create failed for qla2xxx_npiv\n");
|
|
return -ENODEV;
|
|
}
|
|
/*
|
|
* Setup local pointer to NPIV vhba + target_lport_ptr
|
|
*/
|
|
npiv_vha = (struct scsi_qla_host *)vport->dd_data;
|
|
npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
|
|
lport->qla_vha = npiv_vha;
|
|
scsi_host_get(npiv_vha->host);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
|
|
struct target_fabric_configfs *tf,
|
|
struct config_group *group,
|
|
const char *name)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport;
|
|
u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
|
|
char *p, tmp[128];
|
|
int ret;
|
|
|
|
snprintf(tmp, 128, "%s", name);
|
|
|
|
p = strchr(tmp, '@');
|
|
if (!p) {
|
|
pr_err("Unable to locate NPIV '@' separator\n");
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
*p++ = '\0';
|
|
|
|
if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
|
|
&npiv_wwpn, &npiv_wwnn) < 0)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
|
|
if (!lport) {
|
|
pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
lport->lport_npiv_wwpn = npiv_wwpn;
|
|
lport->lport_npiv_wwnn = npiv_wwnn;
|
|
sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
|
|
|
|
ret = tcm_qla2xxx_init_lport(lport);
|
|
if (ret != 0)
|
|
goto out;
|
|
|
|
ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
|
|
tcm_qla2xxx_lport_register_npiv_cb);
|
|
if (ret != 0)
|
|
goto out_lport;
|
|
|
|
return &lport->lport_wwn;
|
|
out_lport:
|
|
vfree(lport->lport_loopid_map);
|
|
btree_destroy32(&lport->lport_fcport_map);
|
|
out:
|
|
kfree(lport);
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
|
|
{
|
|
struct tcm_qla2xxx_lport *lport = container_of(wwn,
|
|
struct tcm_qla2xxx_lport, lport_wwn);
|
|
struct scsi_qla_host *npiv_vha = lport->qla_vha;
|
|
struct qla_hw_data *ha = npiv_vha->hw;
|
|
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
|
|
|
|
scsi_host_put(npiv_vha->host);
|
|
/*
|
|
* Notify libfc that we want to release the vha->fc_vport
|
|
*/
|
|
fc_vport_terminate(npiv_vha->fc_vport);
|
|
scsi_host_put(base_vha->host);
|
|
kfree(lport);
|
|
}
|
|
|
|
|
|
static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
|
|
char *page)
|
|
{
|
|
return sprintf(page,
|
|
"TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
|
|
QLA2XXX_VERSION, utsname()->sysname,
|
|
utsname()->machine, utsname()->release);
|
|
}
|
|
|
|
CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
|
|
|
|
static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
|
|
&tcm_qla2xxx_wwn_attr_version,
|
|
NULL,
|
|
};
|
|
|
|
static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
|
|
.module = THIS_MODULE,
|
|
.fabric_name = "qla2xxx",
|
|
.node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
|
|
/*
|
|
* XXX: Limit assumes single page per scatter-gather-list entry.
|
|
* Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
|
|
*/
|
|
.max_data_sg_nents = 1200,
|
|
.tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
|
|
.tpg_get_tag = tcm_qla2xxx_get_tag,
|
|
.tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
|
|
.tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
|
|
.tpg_check_demo_mode_write_protect =
|
|
tcm_qla2xxx_check_demo_write_protect,
|
|
.tpg_check_prod_mode_write_protect =
|
|
tcm_qla2xxx_check_prod_write_protect,
|
|
.tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only,
|
|
.tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
|
|
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
|
|
.check_stop_free = tcm_qla2xxx_check_stop_free,
|
|
.release_cmd = tcm_qla2xxx_release_cmd,
|
|
.close_session = tcm_qla2xxx_close_session,
|
|
.sess_get_index = tcm_qla2xxx_sess_get_index,
|
|
.sess_get_initiator_sid = NULL,
|
|
.write_pending = tcm_qla2xxx_write_pending,
|
|
.set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
|
|
.get_cmd_state = tcm_qla2xxx_get_cmd_state,
|
|
.queue_data_in = tcm_qla2xxx_queue_data_in,
|
|
.queue_status = tcm_qla2xxx_queue_status,
|
|
.queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
|
|
.aborted_task = tcm_qla2xxx_aborted_task,
|
|
/*
|
|
* Setup function pointers for generic logic in
|
|
* target_core_fabric_configfs.c
|
|
*/
|
|
.fabric_make_wwn = tcm_qla2xxx_make_lport,
|
|
.fabric_drop_wwn = tcm_qla2xxx_drop_lport,
|
|
.fabric_make_tpg = tcm_qla2xxx_make_tpg,
|
|
.fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
|
|
.fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
|
|
|
|
.tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
|
|
.tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs,
|
|
.tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs,
|
|
};
|
|
|
|
static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
|
|
.module = THIS_MODULE,
|
|
.fabric_name = "qla2xxx_npiv",
|
|
.node_acl_size = sizeof(struct tcm_qla2xxx_nacl),
|
|
.tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
|
|
.tpg_get_tag = tcm_qla2xxx_get_tag,
|
|
.tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
|
|
.tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
|
|
.tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
|
|
.tpg_check_prod_mode_write_protect =
|
|
tcm_qla2xxx_check_prod_write_protect,
|
|
.tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
|
|
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
|
|
.check_stop_free = tcm_qla2xxx_check_stop_free,
|
|
.release_cmd = tcm_qla2xxx_release_cmd,
|
|
.close_session = tcm_qla2xxx_close_session,
|
|
.sess_get_index = tcm_qla2xxx_sess_get_index,
|
|
.sess_get_initiator_sid = NULL,
|
|
.write_pending = tcm_qla2xxx_write_pending,
|
|
.set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
|
|
.get_cmd_state = tcm_qla2xxx_get_cmd_state,
|
|
.queue_data_in = tcm_qla2xxx_queue_data_in,
|
|
.queue_status = tcm_qla2xxx_queue_status,
|
|
.queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
|
|
.aborted_task = tcm_qla2xxx_aborted_task,
|
|
/*
|
|
* Setup function pointers for generic logic in
|
|
* target_core_fabric_configfs.c
|
|
*/
|
|
.fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
|
|
.fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
|
|
.fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
|
|
.fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
|
|
.fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl,
|
|
|
|
.tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs,
|
|
.tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs,
|
|
};
|
|
|
|
static int tcm_qla2xxx_register_configfs(void)
|
|
{
|
|
int ret;
|
|
|
|
pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
|
|
QLA2XXX_VERSION, utsname()->sysname,
|
|
utsname()->machine, utsname()->release);
|
|
|
|
ret = target_register_template(&tcm_qla2xxx_ops);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = target_register_template(&tcm_qla2xxx_npiv_ops);
|
|
if (ret)
|
|
goto out_fabric;
|
|
|
|
tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
|
|
WQ_MEM_RECLAIM, 0);
|
|
if (!tcm_qla2xxx_free_wq) {
|
|
ret = -ENOMEM;
|
|
goto out_fabric_npiv;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_fabric_npiv:
|
|
target_unregister_template(&tcm_qla2xxx_npiv_ops);
|
|
out_fabric:
|
|
target_unregister_template(&tcm_qla2xxx_ops);
|
|
return ret;
|
|
}
|
|
|
|
static void tcm_qla2xxx_deregister_configfs(void)
|
|
{
|
|
destroy_workqueue(tcm_qla2xxx_free_wq);
|
|
|
|
target_unregister_template(&tcm_qla2xxx_ops);
|
|
target_unregister_template(&tcm_qla2xxx_npiv_ops);
|
|
}
|
|
|
|
static int __init tcm_qla2xxx_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = tcm_qla2xxx_register_configfs();
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit tcm_qla2xxx_exit(void)
|
|
{
|
|
tcm_qla2xxx_deregister_configfs();
|
|
}
|
|
|
|
MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
|
|
MODULE_LICENSE("GPL");
|
|
module_init(tcm_qla2xxx_init);
|
|
module_exit(tcm_qla2xxx_exit);
|