Split out the CDB emulation into it's own file, and refactor it along proper
boundaries.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Index: lio-core-2.6/drivers/target/target_core_cdb.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ lio-core-2.6/drivers/target/target_core_cdb.c 2010-11-08 18:14:35.028196347 +0100
@@ -0,0 +1,1128 @@
+/*
+ * CDB emulation for non-READ/WRITE commands.
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc.
+ * Copyright (c) 2005, 2006, 2007 SBE, Inc.
+ * Copyright (c) 2007-2010 Rising Tide Systems
+ * Copyright (c) 2008-2010 Linux-iSCSI.org
+ *
+ * Nicholas A. Bellinger <nab@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/target_core_fabric_ops.h>
+#include "target_core_ua.h"
+
+static void
+target_fill_alua_data(struct se_port *port, unsigned char *buf)
+{
+ struct t10_alua_tg_pt_gp *tg_pt_gp;
+ struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
+
+ /*
+ * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS.
+ */
+ buf[5] = 0x80;
+
+ /*
+ * Set TPGS field for explict and/or implict ALUA access type
+ * and opteration.
+ *
+ * See spc4r17 section 6.4.2 Table 135
+ */
+ if (!port)
+ return;
+ tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
+ if (!tg_pt_gp_mem)
+ return;
+
+ spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
+ tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
+ if (tg_pt_gp)
+ buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type;
+ spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
+}
+
+static int
+target_emulate_inquiry_std(struct se_cmd *cmd)
+{
+ struct se_lun *lun = SE_LUN(cmd);
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned char *buf = cmd->t_task->t_task_buf;
+
+ /*
+ * Make sure we at least have 6 bytes of INQUIRY response
+ * payload going back for EVPD=0
+ */
+ if (cmd->data_length < 6) {
+ printk(KERN_ERR "SCSI Inquiry payload length: %u"
+ " too small for EVPD=0\n", cmd->data_length);
+ return -1;
+ }
+
+ buf[0] = dev->transport->get_device_type(dev);
+ if (buf[0] == TYPE_TAPE)
+ buf[1] = 0x80;
+ buf[2] = dev->transport->get_device_rev(dev);
+
+ /*
+ * Enable SCCS and TPGS fields for Emulated ALUA
+ */
+ if (T10_ALUA(dev->se_sub_dev)->alua_type == SPC3_ALUA_EMULATED)
+ target_fill_alua_data(lun->lun_sep, buf);
+
+ if (cmd->data_length < 8) {
+ buf[4] = 1; /* Set additional length to 1 */
+ return 0;
+ }
+
+ buf[7] = 0x32; /* Sync=1 and CmdQue=1 */
+
+ /*
+ * Do not include vendor, product, reversion info in INQUIRY
+ * response payload for cdbs with a small allocation length.
+ */
+ if (cmd->data_length < 36) {
+ buf[4] = 3; /* Set additional length to 3 */
+ return 0;
+ }
+
+ snprintf((unsigned char *)&buf[8], 8, "LIO-ORG");
+ snprintf((unsigned char *)&buf[16], 16, "%s",
+ &DEV_T10_WWN(dev)->model[0]);
+ snprintf((unsigned char *)&buf[32], 4, "%s",
+ &DEV_T10_WWN(dev)->revision[0]);
+ buf[4] = 31; /* Set additional length to 31 */
+ return 0;
+}
+
+/* supported vital product data pages */
+static int
+target_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf)
+{
+ buf[1] = 0x00;
+ if (cmd->data_length < 8)
+ return 0;
+
+ buf[4] = 0x0;
+ /*
+ * Only report the INQUIRY EVPD=1 pages after a valid NAA
+ * Registered Extended LUN WWN has been set via ConfigFS
+ * during device creation/restart.
+ */
+ if (SE_DEV(cmd)->se_sub_dev->su_dev_flags &
+ SDF_EMULATED_VPD_UNIT_SERIAL) {
+ buf[3] = 3;
+ buf[5] = 0x80;
+ buf[6] = 0x83;
+ buf[7] = 0x86;
+ }
+
+ return 0;
+}
+
+/* unit serial number */
+static int
+target_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ u16 len;
+
+ buf[1] = 0x80;
+ if (dev->se_sub_dev->su_dev_flags &
+ SDF_EMULATED_VPD_UNIT_SERIAL) {
+ u32 unit_serial_len;
+
+ unit_serial_len =
+ strlen(&DEV_T10_WWN(dev)->unit_serial[0]);
+ unit_serial_len++; /* For NULL Terminator */
+
+ if (((len + 4) + unit_serial_len) > cmd->data_length) {
+ len += unit_serial_len;
+ buf[2] = ((len >> 8) & 0xff);
+ buf[3] = (len & 0xff);
+ return 0;
+ }
+ len += sprintf((unsigned char *)&buf[4], "%s",
+ &DEV_T10_WWN(dev)->unit_serial[0]);
+ len++; /* Extra Byte for NULL Terminator */
+ buf[3] = len;
+ }
+ return 0;
+}
+
+/*
+ * Device identification VPD, for a complete list of
+ * DESIGNATOR TYPEs see spc4r17 Table 459.
+ */
+static int
+target_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ struct se_lun *lun = SE_LUN(cmd);
+ struct se_port *port = NULL;
+ struct se_portal_group *tpg = NULL;
+ struct t10_alua_lu_gp_member *lu_gp_mem;
+ struct t10_alua_tg_pt_gp *tg_pt_gp;
+ struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
+ unsigned char binary, binary_new;
+ unsigned char *prod = &DEV_T10_WWN(dev)->model[0];
+ u32 prod_len;
+ u32 unit_serial_len, off = 0;
+ int i;
+ u16 len = 0, id_len;
+
+ buf[1] = 0x83;
+ off = 4;
+
+ /*
+ * NAA IEEE Registered Extended Assigned designator format, see
+ * spc4r17 section 7.7.3.6.5
+ *
+ * We depend upon a target_core_mod/ConfigFS provided
+ * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial
+ * value in order to return the NAA id.
+ */
+ if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL))
+ goto check_t10_vend_desc;
+
+ if (off + 20 > cmd->data_length)
+ goto check_t10_vend_desc;
+
+ /* CODE SET == Binary */
+ buf[off++] = 0x1;
+
+ /* Set ASSOICATION == addressed logical unit: 0)b */
+ buf[off] = 0x00;
+
+ /* Identifier/Designator type == NAA identifier */
+ buf[off++] = 0x3;
+ off++;
+
+ /* Identifier/Designator length */
+ buf[off++] = 0x10;
+
+ /*
+ * Start NAA IEEE Registered Extended Identifier/Designator
+ */
+ buf[off++] = (0x6 << 4);
+
+ /*
+ * Use OpenFabrics IEEE Company ID: 00 14 05
+ */
+ buf[off++] = 0x01;
+ buf[off++] = 0x40;
+ buf[off] = (0x5 << 4);
+
+ /*
+ * Return ConfigFS Unit Serial Number information for
+ * VENDOR_SPECIFIC_IDENTIFIER and
+ * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION
+ */
+ binary = transport_asciihex_to_binaryhex(
+ &DEV_T10_WWN(dev)->unit_serial[0]);
+ buf[off++] |= (binary & 0xf0) >> 4;
+ for (i = 0; i < 24; i += 2) {
+ binary_new = transport_asciihex_to_binaryhex(
+ &DEV_T10_WWN(dev)->unit_serial[i+2]);
+ buf[off] = (binary & 0x0f) << 4;
+ buf[off++] |= (binary_new & 0xf0) >> 4;
+ binary = binary_new;
+ }
+ len = 20;
+ off = (len + 4);
+
+check_t10_vend_desc:
+ /*
+ * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4
+ */
+ id_len = 8; /* For Vendor field */
+ prod_len = 4; /* For VPD Header */
+ prod_len += 8; /* For Vendor field */
+ prod_len += strlen(prod);
+ prod_len++; /* For : */
+
+ if (dev->se_sub_dev->su_dev_flags &
+ SDF_EMULATED_VPD_UNIT_SERIAL) {
+ unit_serial_len =
+ strlen(&DEV_T10_WWN(dev)->unit_serial[0]);
+ unit_serial_len++; /* For NULL Terminator */
+
+ if ((len + (id_len + 4) +
+ (prod_len + unit_serial_len)) >
+ cmd->data_length) {
+ len += (prod_len + unit_serial_len);
+ goto check_port;
+ }
+ id_len += sprintf((unsigned char *)&buf[off+12],
+ "%s:%s", prod,
+ &DEV_T10_WWN(dev)->unit_serial[0]);
+ }
+ buf[off] = 0x2; /* ASCII */
+ buf[off+1] = 0x1; /* T10 Vendor ID */
+ buf[off+2] = 0x0;
+ memcpy((unsigned char *)&buf[off+4], "LIO-ORG", 8);
+ /* Extra Byte for NULL Terminator */
+ id_len++;
+ /* Identifier Length */
+ buf[off+3] = id_len;
+ /* Header size for Designation descriptor */
+ len += (id_len + 4);
+ off += (id_len + 4);
+ /*
+ * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD
+ */
+check_port:
+ port = lun->lun_sep;
+ if (port) {
+ struct t10_alua_lu_gp *lu_gp;
+ u32 padding, scsi_name_len;
+ u16 lu_gp_id = 0;
+ u16 tg_pt_gp_id = 0;
+ u16 tpgt;
+
+ tpg = port->sep_tpg;
+ /*
+ * Relative target port identifer, see spc4r17
+ * section 7.7.3.7
+ *
+ * Get the PROTOCOL IDENTIFIER as defined by spc4r17
+ * section 7.5.1 Table 362
+ */
+ if (((len + 4) + 8) > cmd->data_length) {
+ len += 8;
+ goto check_tpgi;
+ }
+ buf[off] =
+ (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
+ buf[off++] |= 0x1; /* CODE SET == Binary */
+ buf[off] = 0x80; /* Set PIV=1 */
+ /* Set ASSOICATION == target port: 01b */
+ buf[off] |= 0x10;
+ /* DESIGNATOR TYPE == Relative target port identifer */
+ buf[off++] |= 0x4;
+ off++; /* Skip over Reserved */
+ buf[off++] = 4; /* DESIGNATOR LENGTH */
+ /* Skip over Obsolete field in RTPI payload
+ * in Table 472 */
+ off += 2;
+ buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
+ buf[off++] = (port->sep_rtpi & 0xff);
+ len += 8; /* Header size + Designation descriptor */
+ /*
+ * Target port group identifier, see spc4r17
+ * section 7.7.3.8
+ *
+ * Get the PROTOCOL IDENTIFIER as defined by spc4r17
+ * section 7.5.1 Table 362
+ */
+check_tpgi:
+ if (T10_ALUA(dev->se_sub_dev)->alua_type !=
+ SPC3_ALUA_EMULATED)
+ goto check_scsi_name;
+
+ if (((len + 4) + 8) > cmd->data_length) {
+ len += 8;
+ goto check_lu_gp;
+ }
+ tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
+ if (!tg_pt_gp_mem)
+ goto check_lu_gp;
+
+ spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
+ tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
+ if (!(tg_pt_gp)) {
+ spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
+ goto check_lu_gp;
+ }
+ tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id;
+ spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
+
+ buf[off] =
+ (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
+ buf[off++] |= 0x1; /* CODE SET == Binary */
+ buf[off] = 0x80; /* Set PIV=1 */
+ /* Set ASSOICATION == target port: 01b */
+ buf[off] |= 0x10;
+ /* DESIGNATOR TYPE == Target port group identifier */
+ buf[off++] |= 0x5;
+ off++; /* Skip over Reserved */
+ buf[off++] = 4; /* DESIGNATOR LENGTH */
+ off += 2; /* Skip over Reserved Field */
+ buf[off++] = ((tg_pt_gp_id >> 8) & 0xff);
+ buf[off++] = (tg_pt_gp_id & 0xff);
+ len += 8; /* Header size + Designation descriptor */
+ /*
+ * Logical Unit Group identifier, see spc4r17
+ * section 7.7.3.8
+ */
+check_lu_gp:
+ if (((len + 4) + 8) > cmd->data_length) {
+ len += 8;
+ goto check_scsi_name;
+ }
+ lu_gp_mem = dev->dev_alua_lu_gp_mem;
+ if (!(lu_gp_mem))
+ goto check_scsi_name;
+
+ spin_lock(&lu_gp_mem->lu_gp_mem_lock);
+ lu_gp = lu_gp_mem->lu_gp;
+ if (!(lu_gp)) {
+ spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
+ goto check_scsi_name;
+ }
+ lu_gp_id = lu_gp->lu_gp_id;
+ spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
+
+ buf[off++] |= 0x1; /* CODE SET == Binary */
+ /* DESIGNATOR TYPE == Logical Unit Group identifier */
+ buf[off++] |= 0x6;
+ off++; /* Skip over Reserved */
+ buf[off++] = 4; /* DESIGNATOR LENGTH */
+ off += 2; /* Skip over Reserved Field */
+ buf[off++] = ((lu_gp_id >> 8) & 0xff);
+ buf[off++] = (lu_gp_id & 0xff);
+ len += 8; /* Header size + Designation descriptor */
+ /*
+ * SCSI name string designator, see spc4r17
+ * section 7.7.3.11
+ *
+ * Get the PROTOCOL IDENTIFIER as defined by spc4r17
+ * section 7.5.1 Table 362
+ */
+check_scsi_name:
+ scsi_name_len = strlen(TPG_TFO(tpg)->tpg_get_wwn(tpg));
+ /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */
+ scsi_name_len += 10;
+ /* Check for 4-byte padding */
+ padding = ((-scsi_name_len) & 3);
+ if (padding != 0)
+ scsi_name_len += padding;
+ /* Header size + Designation descriptor */
+ scsi_name_len += 4;
+
+ if (((len + 4) + scsi_name_len) > cmd->data_length) {
+ len += scsi_name_len;
+ goto set_len;
+ }
+ buf[off] =
+ (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
+ buf[off++] |= 0x3; /* CODE SET == UTF-8 */
+ buf[off] = 0x80; /* Set PIV=1 */
+ /* Set ASSOICATION == target port: 01b */
+ buf[off] |= 0x10;
+ /* DESIGNATOR TYPE == SCSI name string */
+ buf[off++] |= 0x8;
+ off += 2; /* Skip over Reserved and length */
+ /*
+ * SCSI name string identifer containing, $FABRIC_MOD
+ * dependent information. For LIO-Target and iSCSI
+ * Target Port, this means "<iSCSI name>,t,0x<TPGT> in
+ * UTF-8 encoding.
+ */
+ tpgt = TPG_TFO(tpg)->tpg_get_tag(tpg);
+ scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x",
+ TPG_TFO(tpg)->tpg_get_wwn(tpg), tpgt);
+ scsi_name_len += 1 /* Include NULL terminator */;
+ /*
+ * The null-terminated, null-padded (see 4.4.2) SCSI
+ * NAME STRING field contains a UTF-8 format string.
+ * The number of bytes in the SCSI NAME STRING field
+ * (i.e., the value in the DESIGNATOR LENGTH field)
+ * shall be no larger than 256 and shall be a multiple
+ * of four.
+ */
+ if (padding)
+ scsi_name_len += padding;
+
+ buf[off-1] = scsi_name_len;
+ off += scsi_name_len;
+ /* Header size + Designation descriptor */
+ len += (scsi_name_len + 4);
+ }
+set_len:
+ buf[2] = ((len >> 8) & 0xff);
+ buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */
+ return 0;
+}
+
+/* Extended INQUIRY Data VPD Page */
+static int
+target_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf)
+{
+ if (cmd->data_length < 60)
+ return 0;
+
+ buf[1] = 0x86;
+ buf[2] = 0x3c;
+ /* Set HEADSUP, ORDSUP, SIMPSUP */
+ buf[5] = 0x07;
+
+ /* If WriteCache emulation is enabled, set V_SUP */
+ if (DEV_ATTRIB(SE_DEV(cmd))->emulate_write_cache > 0)
+ buf[6] = 0x01;
+ return 0;
+}
+
+/* Block Limits VPD page */
+static int
+target_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ int have_tp = 0;
+
+ /*
+ * Following sbc3r22 section 6.5.3 Block Limits VPD page, when
+ * emulate_tpu=1 or emulate_tpws=1 we will be expect a
+ * different page length for Thin Provisioning.
+ */
+ if (DEV_ATTRIB(dev)->emulate_tpu || DEV_ATTRIB(dev)->emulate_tpws)
+ have_tp = 1;
+
+ if (have_tp) {
+ if (cmd->data_length < (0x3c + 4)) {
+ printk(KERN_INFO "Received data_length: %u"
+ " too small for TPE=1 EVPD 0xb0\n",
+ cmd->data_length);
+ return -1;
+ }
+ } else {
+ if (cmd->data_length < (0x10 + 4)) {
+ printk(KERN_INFO "Received data_length: %u"
+ " too small for TPE=1 EVPD 0xb0\n",
+ cmd->data_length);
+ return -1;
+ }
+ }
+
+ buf[0] = dev->transport->get_device_type(dev);
+ buf[1] = 0xb0;
+ buf[3] = have_tp ? 0x3c : 0x10;
+
+ /*
+ * Set OPTIMAL TRANSFER LENGTH GRANULARITY
+ */
+ put_unaligned_be16(1, &buf[6]);
+
+ /*
+ * Set MAXIMUM TRANSFER LENGTH
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->max_sectors, &buf[8]);
+
+ /*
+ * Set OPTIMAL TRANSFER LENGTH
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->optimal_sectors, &buf[12]);
+
+ if (!have_tp)
+ return 0;
+
+ /*
+ * Set MAXIMUM UNMAP LBA COUNT
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->max_unmap_lba_count, &buf[20]);
+
+ /*
+ * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->max_unmap_block_desc_count,
+ &buf[24]);
+
+ /*
+ * Set OPTIMAL UNMAP GRANULARITY
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->unmap_granularity, &buf[28]);
+
+ /*
+ * UNMAP GRANULARITY ALIGNMENT
+ */
+ put_unaligned_be32(DEV_ATTRIB(dev)->unmap_granularity_alignment,
+ &buf[32]);
+ if (DEV_ATTRIB(dev)->unmap_granularity_alignment != 0)
+ buf[32] |= 0x80; /* Set the UGAVALID bit */
+
+ return 0;
+}
+
+/* Thin Provisioning VPD */
+static int
+target_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf)
+{
+ struct se_device *dev = SE_DEV(cmd);
+
+ /*
+ * From sbc3r22 section 6.5.4 Thin Provisioning VPD page:
+ *
+ * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to
+ * zero, then the page length shall be set to 0004h. If the DP bit
+ * is set to one, then the page length shall be set to the value
+ * defined in table 162.
+ */
+ buf[0] = dev->transport->get_device_type(dev);
+ buf[1] = 0xb2;
+
+ /*
+ * Set Hardcoded length mentioned above for DP=0
+ */
+ put_unaligned_be16(0x0004, &buf[2]);
+
+ /*
+ * The THRESHOLD EXPONENT field indicates the threshold set size in
+ * LBAs as a power of 2 (i.e., the threshold set size is equal to
+ * 2(threshold exponent)).
+ *
+ * Note that this is currently set to 0x00 as mkp says it will be
+ * changing again. We can enable this once it has settled in T10
+ * and is actually used by Linux/SCSI ML code.
+ */
+ buf[4] = 0x00;
+
+ /*
+ * A TPU bit set to one indicates that the device server supports
+ * the UNMAP command (see 5.25). A TPU bit set to zero indicates
+ * that the device server does not support the UNMAP command.
+ */
+ if (DEV_ATTRIB(dev)->emulate_tpu != 0)
+ buf[5] = 0x80;
+
+ /*
+ * A TPWS bit set to one indicates that the device server supports
+ * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs.
+ * A TPWS bit set to zero indicates that the device server does not
+ * support the use of the WRITE SAME (16) command to unmap LBAs.
+ */
+ if (DEV_ATTRIB(dev)->emulate_tpws != 0)
+ buf[5] |= 0x40;
+
+ return 0;
+}
+
+static int
+target_emulate_inquiry(struct se_cmd *cmd)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned char *buf = cmd->t_task->t_task_buf;
+ unsigned char *cdb = cmd->t_task->t_task_cdb;
+
+ if (!(cdb[1] & 0x1))
+ return target_emulate_inquiry_std(cmd);
+
+ /*
+ * Make sure we at least have 4 bytes of INQUIRY response
+ * payload for 0x00 going back for EVPD=1. Note that 0x80
+ * and 0x83 will check for enough payload data length and
+ * jump to set_len: label when there is not enough inquiry EVPD
+ * payload length left for the next outgoing EVPD metadata
+ */
+ if (cmd->data_length < 4) {
+ printk(KERN_ERR "SCSI Inquiry payload length: %u"
+ " too small for EVPD=1\n", cmd->data_length);
+ return -1;
+ }
+ buf[0] = dev->transport->get_device_type(dev);
+
+ switch (cdb[2]) {
+ case 0x00:
+ return target_emulate_evpd_00(cmd, buf);
+ case 0x80:
+ return target_emulate_evpd_80(cmd, buf);
+ case 0x83:
+ return target_emulate_evpd_83(cmd, buf);
+ case 0x86:
+ return target_emulate_evpd_86(cmd, buf);
+ case 0xb0:
+ return target_emulate_evpd_b0(cmd, buf);
+ case 0xb2:
+ return target_emulate_evpd_b2(cmd, buf);
+ default:
+ printk(KERN_ERR "Unknown VPD Code: 0x%02x\n", cdb[2]);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+target_emulate_readcapacity(struct se_cmd *cmd)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned char *buf = cmd->t_task->t_task_buf;
+ u32 blocks = dev->transport->get_blocks(dev);
+
+ buf[0] = (blocks >> 24) & 0xff;
+ buf[1] = (blocks >> 16) & 0xff;
+ buf[2] = (blocks >> 8) & 0xff;
+ buf[3] = blocks & 0xff;
+ buf[4] = (DEV_ATTRIB(dev)->block_size >> 24) & 0xff;
+ buf[5] = (DEV_ATTRIB(dev)->block_size >> 16) & 0xff;
+ buf[6] = (DEV_ATTRIB(dev)->block_size >> 8) & 0xff;
+ buf[7] = DEV_ATTRIB(dev)->block_size & 0xff;
+ /*
+ * Set max 32-bit blocks to signal SERVICE ACTION READ_CAPACITY_16
+ */
+ if (DEV_ATTRIB(dev)->emulate_tpu || DEV_ATTRIB(dev)->emulate_tpws)
+ put_unaligned_be32(0xFFFFFFFF, &buf[0]);
+
+ return 0;
+}
+
+static int
+target_emulate_readcapacity_16(struct se_cmd *cmd)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned char *buf = cmd->t_task->t_task_buf;
+ unsigned long long blocks = dev->transport->get_blocks(dev);
+
+ buf[0] = (blocks >> 56) & 0xff;
+ buf[1] = (blocks >> 48) & 0xff;
+ buf[2] = (blocks >> 40) & 0xff;
+ buf[3] = (blocks >> 32) & 0xff;
+ buf[4] = (blocks >> 24) & 0xff;
+ buf[5] = (blocks >> 16) & 0xff;
+ buf[6] = (blocks >> 8) & 0xff;
+ buf[7] = blocks & 0xff;
+ buf[8] = (DEV_ATTRIB(dev)->block_size >> 24) & 0xff;
+ buf[9] = (DEV_ATTRIB(dev)->block_size >> 16) & 0xff;
+ buf[10] = (DEV_ATTRIB(dev)->block_size >> 8) & 0xff;
+ buf[11] = DEV_ATTRIB(dev)->block_size & 0xff;
+ /*
+ * Set Thin Provisioning Enable bit following sbc3r22 in section
+ * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled.
+ */
+ if (DEV_ATTRIB(dev)->emulate_tpu || DEV_ATTRIB(dev)->emulate_tpws)
+ buf[14] = 0x80;
+
+ return 0;
+}
+
+static int
+target_modesense_rwrecovery(unsigned char *p)
+{
+ p[0] = 0x01;
+ p[1] = 0x0a;
+
+ return 12;
+}
+
+static int
+target_modesense_control(struct se_device *dev, unsigned char *p)
+{
+ p[0] = 0x0a;
+ p[1] = 0x0a;
+ p[2] = 2;
+ /*
+ * From spc4r17, section 7.4.6 Control mode Page
+ *
+ * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b
+ *
+ * 00b: The logical unit shall clear any unit attention condition
+ * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
+ * status and shall not establish a unit attention condition when a com-
+ * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT
+ * status.
+ *
+ * 10b: The logical unit shall not clear any unit attention condition
+ * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
+ * status and shall not establish a unit attention condition when
+ * a command is completed with BUSY, TASK SET FULL, or RESERVATION
+ * CONFLICT status.
+ *
+ * 11b a The logical unit shall not clear any unit attention condition
+ * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
+ * status and shall establish a unit attention condition for the
+ * initiator port associated with the I_T nexus on which the BUSY,
+ * TASK SET FULL, or RESERVATION CONFLICT status is being returned.
+ * Depending on the status, the additional sense code shall be set to
+ * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS
+ * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE
+ * command, a unit attention condition shall be established only once
+ * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless
+ * to the number of commands completed with one of those status codes.
+ */
+ p[4] = (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl == 2) ? 0x30 :
+ (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00;
+ /*
+ * From spc4r17, section 7.4.6 Control mode Page
+ *
+ * Task Aborted Status (TAS) bit set to zero.
+ *
+ * A task aborted status (TAS) bit set to zero specifies that aborted
+ * tasks shall be terminated by the device server without any response
+ * to the application client. A TAS bit set to one specifies that tasks
+ * aborted by the actions of an I_T nexus other than the I_T nexus on
+ * which the command was received shall be completed with TASK ABORTED
+ * status (see SAM-4).
+ */
+ p[5] = (DEV_ATTRIB(dev)->emulate_tas) ? 0x40 : 0x00;
+ p[8] = 0xff;
+ p[9] = 0xff;
+ p[11] = 30;
+
+ return 12;
+}
+
+static int
+target_modesense_caching(struct se_device *dev, unsigned char *p)
+{
+ p[0] = 0x08;
+ p[1] = 0x12;
+ if (DEV_ATTRIB(dev)->emulate_write_cache > 0)
+ p[2] = 0x04; /* Write Cache Enable */
+ p[12] = 0x20; /* Disabled Read Ahead */
+
+ return 20;
+}
+
+static void
+target_modesense_write_protect(unsigned char *buf, int type)
+{
+ /*
+ * I believe that the WP bit (bit 7) in the mode header is the same for
+ * all device types..
+ */
+ switch (type) {
+ case TYPE_DISK:
+ case TYPE_TAPE:
+ default:
+ buf[0] |= 0x80; /* WP bit */
+ break;
+ }
+}
+
+static void
+target_modesense_dpofua(unsigned char *buf, int type)
+{
+ switch (type) {
+ case TYPE_DISK:
+ buf[0] |= 0x10; /* DPOFUA bit */
+ break;
+ default:
+ break;
+ }
+}
+
+static int
+target_emulate_modesense(struct se_cmd *cmd, int ten)
+{
+ struct se_device *dev = SE_DEV(cmd);
+ char *cdb = cmd->t_task->t_task_cdb;
+ unsigned char *rbuf = cmd->t_task->t_task_buf;
+ int type = dev->transport->get_device_type(dev);
+ int offset = (ten) ? 8 : 4;
+ int length = 0;
+ unsigned char buf[SE_MODE_PAGE_BUF];
+
+ memset(buf, 0, SE_MODE_PAGE_BUF);
+
+ switch (cdb[2] & 0x3f) {
+ case 0x01:
+ length = target_modesense_rwrecovery(&buf[offset]);
+ break;
+ case 0x08:
+ length = target_modesense_caching(dev, &buf[offset]);
+ break;
+ case 0x0a:
+ length = target_modesense_control(dev, &buf[offset]);
+ break;
+ case 0x3f:
+ length = target_modesense_rwrecovery(&buf[offset]);
+ length += target_modesense_caching(dev, &buf[offset+length]);
+ length += target_modesense_control(dev, &buf[offset+length]);
+ break;
+ default:
+ printk(KERN_ERR "Got Unknown Mode Page: 0x%02x\n",
+ cdb[2] & 0x3f);
+ return PYX_TRANSPORT_UNKNOWN_MODE_PAGE;
+ }
+ offset += length;
+
+ if (ten) {
+ offset -= 2;
+ buf[0] = (offset >> 8) & 0xff;
+ buf[1] = offset & 0xff;
+
+ if ((SE_LUN(cmd)->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) ||
+ (cmd->se_deve &&
+ (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
+ target_modesense_write_protect(&buf[3], type);
+
+ if ((DEV_ATTRIB(dev)->emulate_write_cache > 0) &&
+ (DEV_ATTRIB(dev)->emulate_fua_write > 0))
+ target_modesense_dpofua(&buf[3], type);
+
+ if ((offset + 2) > cmd->data_length)
+ offset = cmd->data_length;
+
+ } else {
+ offset -= 1;
+ buf[0] = offset & 0xff;
+
+ if ((SE_LUN(cmd)->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) ||
+ (cmd->se_deve &&
+ (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
+ target_modesense_write_protect(&buf[2], type);
+
+ if ((DEV_ATTRIB(dev)->emulate_write_cache > 0) &&
+ (DEV_ATTRIB(dev)->emulate_fua_write > 0))
+ target_modesense_dpofua(&buf[2], type);
+
+ if ((offset + 1) > cmd->data_length)
+ offset = cmd->data_length;
+ }
+ memcpy(rbuf, buf, offset);
+
+ return 0;
+}
+
+static int
+target_emulate_request_sense(struct se_cmd *cmd)
+{
+ unsigned char *cdb = cmd->t_task->t_task_cdb;
+ unsigned char *buf = cmd->t_task->t_task_buf;
+ u8 ua_asc = 0, ua_ascq = 0;
+
+ if (cdb[1] & 0x01) {
+ printk(KERN_ERR "REQUEST_SENSE description emulation not"
+ " supported\n");
+ return PYX_TRANSPORT_INVALID_CDB_FIELD;
+ }
+ if (!(core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq))) {
+ /*
+ * CURRENT ERROR, UNIT ATTENTION
+ */
+ buf[0] = 0x70;
+ buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
+ /*
+ * Make sure request data length is enough for additional
+ * sense data.
+ */
+ if (cmd->data_length <= 18) {
+ buf[7] = 0x00;
+ return 0;
+ }
+ /*
+ * The Additional Sense Code (ASC) from the UNIT ATTENTION
+ */
+ buf[SPC_ASC_KEY_OFFSET] = ua_asc;
+ buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq;
+ buf[7] = 0x0A;
+ } else {
+ /*
+ * CURRENT ERROR, NO SENSE
+ */
+ buf[0] = 0x70;
+ buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE;
+ /*
+ * Make sure request data length is enough for additional
+ * sense data.
+ */
+ if (cmd->data_length <= 18) {
+ buf[7] = 0x00;
+ return 0;
+ }
+ /*
+ * NO ADDITIONAL SENSE INFORMATION
+ */
+ buf[SPC_ASC_KEY_OFFSET] = 0x00;
+ buf[7] = 0x0A;
+ }
+
+ return 0;
+}
+
+/*
+ * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
+ * Note this is not used for TCM/pSCSI passthrough
+ */
+static int
+target_emulate_unmap(struct se_task *task)
+{
+ struct se_cmd *cmd = TASK_CMD(task);
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned char *buf = cmd->t_task->t_task_buf, *ptr = NULL;
+ unsigned char *cdb = &cmd->t_task->t_task_cdb[0];
+ sector_t lba;
+ unsigned int size = cmd->data_length, range;
+ int ret, offset;
+ unsigned short dl, bd_dl;
+
+ /* First UNMAP block descriptor starts at 8 byte offset */
+ offset = 8;
+ size -= 8;
+ dl = get_unaligned_be16(&cdb[0]);
+ bd_dl = get_unaligned_be16(&cdb[2]);
+ ptr = &buf[offset];
+ printk(KERN_INFO "UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu"
+ " ptr: %p\n", dev->transport->name, dl, bd_dl, size, ptr);
+
+ while (size) {
+ lba = get_unaligned_be64(&ptr[0]);
+ range = get_unaligned_be32(&ptr[8]);
+ printk(KERN_INFO "UNMAP: Using lba: %llu and range: %u\n",
+ (unsigned long long)lba, range);
+
+ ret = dev->transport->do_discard(dev, lba, range);
+ if (ret < 0) {
+ printk(KERN_ERR "blkdev_issue_discard() failed: %d\n",
+ ret);
+ return -1;
+ }
+
+ ptr += 16;
+ size -= 16;
+ }
+
+ task->task_scsi_status = GOOD;
+ transport_complete_task(task, 1);
+ return 0;
+}
+
+/*
+ * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
+ * Note this is not used for TCM/pSCSI passthrough
+ */
+static int
+target_emulate_write_same(struct se_task *task)
+{
+ struct se_cmd *cmd = TASK_CMD(task);
+ struct se_device *dev = SE_DEV(cmd);
+ sector_t lba = cmd->t_task->t_task_lba;
+ unsigned int range;
+ int ret;
+
+ range = (cmd->data_length / DEV_ATTRIB(dev)->block_size);
+
+ printk(KERN_INFO "WRITE_SAME UNMAP: LBA: %llu Range: %u\n",
+ (unsigned long long)lba, range);
+
+ ret = dev->transport->do_discard(dev, lba, range);
+ if (ret < 0) {
+ printk(KERN_INFO "blkdev_issue_discard() failed for WRITE_SAME\n");
+ return -1;
+ }
+
+ task->task_scsi_status = GOOD;
+ transport_complete_task(task, 1);
+ return 0;
+}
+
+int
+transport_emulate_control_cdb(struct se_task *task)
+{
+ struct se_cmd *cmd = TASK_CMD(task);
+ struct se_device *dev = SE_DEV(cmd);
+ unsigned short service_action;
+ int ret = 0;
+
+ switch (cmd->t_task->t_task_cdb[0]) {
+ case INQUIRY:
+ ret = target_emulate_inquiry(cmd);
+ break;
+ case READ_CAPACITY:
+ ret = target_emulate_readcapacity(cmd);
+ break;
+ case MODE_SENSE:
+ ret = target_emulate_modesense(cmd, 0);
+ break;
+ case MODE_SENSE_10:
+ ret = target_emulate_modesense(cmd, 1);
+ break;
+ case SERVICE_ACTION_IN:
+ switch (cmd->t_task->t_task_cdb[1] & 0x1f) {
+ case SAI_READ_CAPACITY_16:
+ ret = target_emulate_readcapacity_16(cmd);
+ break;
+ default:
+ printk(KERN_ERR "Unsupported SA: 0x%02x\n",
+ cmd->t_task->t_task_cdb[1] & 0x1f);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+ case REQUEST_SENSE:
+ ret = target_emulate_request_sense(cmd);
+ break;
+ case UNMAP:
+ if (!dev->transport->do_discard) {
+ printk(KERN_ERR "UNMAP emulation not supported for: %s\n",
+ dev->transport->name);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+ ret = target_emulate_unmap(task);
+ break;
+ case WRITE_SAME_16:
+ if (!dev->transport->do_discard) {
+ printk(KERN_ERR "WRITE_SAME_16 emulation not supported"
+ " for: %s\n", dev->transport->name);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+ ret = target_emulate_write_same(task);
+ break;
+ case VARIABLE_LENGTH_CMD:
+ service_action =
+ get_unaligned_be16(&cmd->t_task->t_task_cdb[8]);
+ switch (service_action) {
+ case WRITE_SAME_32:
+ if (!dev->transport->do_discard) {
+ printk(KERN_ERR "WRITE_SAME_32 SA emulation not"
+ " supported for: %s\n",
+ dev->transport->name);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+ ret = target_emulate_write_same(task);
+ break;
+ default:
+ printk(KERN_ERR "Unsupported VARIABLE_LENGTH_CMD SA:"
+ " 0x%02x\n", service_action);
+ break;
+ }
+ break;
+ case SYNCHRONIZE_CACHE:
+ case 0x91: /* SYNCHRONIZE_CACHE_16: */
+ if (!dev->transport->do_sync_cache) {
+ printk(KERN_ERR
+ "SYNCHRONIZE_CACHE emulation not supported"
+ " for: %s\n", dev->transport->name);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+ dev->transport->do_sync_cache(task);
+ break;
+ case ALLOW_MEDIUM_REMOVAL:
+ case ERASE:
+ case REZERO_UNIT:
+ case SEEK_10:
+ case SPACE:
+ case START_STOP:
+ case TEST_UNIT_READY:
+ case VERIFY:
+ case WRITE_FILEMARKS:
+ break;
+ default:
+ printk(KERN_ERR "Unsupported SCSI Opcode: 0x%02x for %s\n",
+ cmd->t_task->t_task_cdb[0], dev->transport->name);
+ return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
+ }
+
+ if (ret < 0)
+ return ret;
+ task->task_scsi_status = GOOD;
+ transport_complete_task(task, 1);
+
+ return PYX_TRANSPORT_SENT_TO_TRANSPORT;
+}
Index: lio-core-2.6/drivers/target/target_core_transport.c
===================================================================
--- lio-core-2.6.orig/drivers/target/target_core_transport.c 2010-11-08 17:06:49.144863013 +0100
+++ lio-core-2.6/drivers/target/target_core_transport.c 2010-11-08 18:13:15.068196347 +0100
@@ -4405,871 +4405,6 @@ unsigned char transport_asciihex_to_bina
}
EXPORT_SYMBOL(transport_asciihex_to_binaryhex);
-extern int transport_generic_emulate_inquiry(
- struct se_cmd *cmd,
- unsigned char type,
- unsigned char *prod,
- unsigned char *version)
-{
- struct se_device *dev = SE_DEV(cmd);
- struct se_lun *lun = SE_LUN(cmd);
- struct se_port *port = NULL;
- struct se_portal_group *tpg = NULL;
- struct t10_alua_lu_gp_member *lu_gp_mem;
- struct t10_alua_tg_pt_gp *tg_pt_gp;
- struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
- unsigned char *buf = (unsigned char *) T_TASK(cmd)->t_task_buf;
- unsigned char *cdb = T_TASK(cmd)->t_task_cdb;
- unsigned char binary, binary_new;
- u32 prod_len;
- u32 unit_serial_len, off = 0;
- int i;
- u16 len = 0, id_len;
-
- if (!(cdb[1] & 0x1)) {
- /*
- * Make sure we at least have 6 bytes of INQUIRY response
- * payload going back for EVPD=0
- */
- if (cmd->data_length < 6) {
- printk(KERN_ERR "SCSI Inquiry payload length: %u"
- " too small for EVPD=0\n", cmd->data_length);
- return -1;
- }
- buf[0] = type;
-
- if (type == TYPE_TAPE)
- buf[1] = 0x80;
- buf[2] = TRANSPORT(dev)->get_device_rev(dev);
- /*
- * Enable SCCS and TPGS fields for Emulated ALUA
- */
- if (T10_ALUA(dev->se_sub_dev)->alua_type ==
- SPC3_ALUA_EMULATED) {
- /*
- * Set SCCS for MAINTENANCE_IN +
- * REPORT_TARGET_PORT_GROUPS
- */
- buf[5] = 0x80;
- /*
- * Set TPGS field for explict and/or implict ALUA
- * access type and opteration.
- *
- * See spc4r17 section 6.4.2 Table 135
- */
- port = lun->lun_sep;
- if (!(port))
- goto after_tpgs;
- tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
- if (!(tg_pt_gp_mem))
- goto after_tpgs;
-
- spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
- tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
- if (!(tg_pt_gp)) {
- spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
- goto after_tpgs;
- }
- buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type;
- spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
- }
-after_tpgs:
- if (cmd->data_length < 8) {
- buf[4] = 1; /* Set additional length to 1 */
- return 0;
- }
-
- buf[7] = 0x32; /* Sync=1 and CmdQue=1 */
- /*
- * Do not include vendor, product, reversion info in INQUIRY
- * response payload for cdbs with a small allocation length.
- */
- if (cmd->data_length < 36) {
- buf[4] = 3; /* Set additional length to 3 */
- return 0;
- }
-
- snprintf((unsigned char *)&buf[8], 8, "LIO-ORG");
- snprintf((unsigned char *)&buf[16], 16, "%s", prod);
- snprintf((unsigned char *)&buf[32], 4, "%s", version);
- buf[4] = 31; /* Set additional length to 31 */
- return 0;
- }
- /*
- * Make sure we at least have 4 bytes of INQUIRY response
- * payload for 0x00 going back for EVPD=1. Note that 0x80
- * and 0x83 will check for enough payload data length and
- * jump to set_len: label when there is not enough inquiry EVPD
- * payload length left for the next outgoing EVPD metadata
- */
- if (cmd->data_length < 4) {
- printk(KERN_ERR "SCSI Inquiry payload length: %u"
- " too small for EVPD=1\n", cmd->data_length);
- return -1;
- }
- buf[0] = type;
-
- switch (cdb[2]) {
- case 0x00: /* supported vital product data pages */
- buf[1] = 0x00;
- if (cmd->data_length < 8)
- return 0;
- buf[4] = 0x0;
- /*
- * Only report the INQUIRY EVPD=1 pages after a valid NAA
- * Registered Extended LUN WWN has been set via ConfigFS
- * during device creation/restart.
- */
- if (dev->se_sub_dev->su_dev_flags &
- SDF_EMULATED_VPD_UNIT_SERIAL) {
- buf[3] = 3;
- buf[5] = 0x80;
- buf[6] = 0x83;
- buf[7] = 0x86;
- len = 3;
- }
- break;
- case 0x80: /* unit serial number */
- buf[1] = 0x80;
- if (dev->se_sub_dev->su_dev_flags &
- SDF_EMULATED_VPD_UNIT_SERIAL) {
-
- unit_serial_len =
- strlen(&DEV_T10_WWN(dev)->unit_serial[0]);
- unit_serial_len++; /* For NULL Terminator */
-
- if (((len + 4) + unit_serial_len) > cmd->data_length) {
- len += unit_serial_len;
- goto set_len;
- }
- len += sprintf((unsigned char *)&buf[4], "%s",
- &DEV_T10_WWN(dev)->unit_serial[0]);
- len++; /* Extra Byte for NULL Terminator */
- buf[3] = len;
- }
- break;
- case 0x83:
- /*
- * Device identification VPD, for a complete list of
- * DESIGNATOR TYPEs see spc4r17 Table 459.
- */
- buf[1] = 0x83;
- off = 4;
- /*
- * NAA IEEE Registered Extended Assigned designator format,
- * see spc4r17 section 7.7.3.6.5
- *
- * We depend upon a target_core_mod/ConfigFS provided
- * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial
- * value in order to return the NAA id.
- */
- if (!(dev->se_sub_dev->su_dev_flags &
- SDF_EMULATED_VPD_UNIT_SERIAL))
- goto check_t10_vend_desc;
- if ((off + 20) > cmd->data_length)
- goto check_t10_vend_desc;
- /* CODE SET == Binary */
- buf[off++] = 0x1;
- /* Set ASSOICATION == addressed logical unit: 0)b */
- buf[off] = 0x00;
- /* Identifier/Designator type == NAA identifier */
- buf[off++] = 0x3;
- off++;
- /* Identifier/Designator length */
- buf[off++] = 0x10;
- /*
- * Start NAA IEEE Registered Extended Identifier/Designator
- */
- buf[off++] = (0x6 << 4);
- /*
- * Use OpenFabrics IEEE Company ID: 00 14 05
- */
- buf[off++] = 0x01;
- buf[off++] = 0x40;
- buf[off] = (0x5 << 4);
- /*
- * Return ConfigFS Unit Serial Number information for
- * VENDOR_SPECIFIC_IDENTIFIER and
- * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION
- */
- binary = transport_asciihex_to_binaryhex(
- &DEV_T10_WWN(dev)->unit_serial[0]);
- buf[off++] |= (binary & 0xf0) >> 4;
- for (i = 0; i < 24; i += 2) {
- binary_new = transport_asciihex_to_binaryhex(
- &DEV_T10_WWN(dev)->unit_serial[i+2]);
- buf[off] = (binary & 0x0f) << 4;
- buf[off++] |= (binary_new & 0xf0) >> 4;
- binary = binary_new;
- }
- len = 20;
- off = (len + 4);
-check_t10_vend_desc:
- /*
- * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4
- */
- id_len = 8; /* For Vendor field */
- prod_len = 4; /* For VPD Header */
- prod_len += 8; /* For Vendor field */
- prod_len += strlen(prod);
- prod_len++; /* For : */
-
- if (dev->se_sub_dev->su_dev_flags &
- SDF_EMULATED_VPD_UNIT_SERIAL) {
- unit_serial_len =
- strlen(&DEV_T10_WWN(dev)->unit_serial[0]);
- unit_serial_len++; /* For NULL Terminator */
-
- if ((len + (id_len + 4) +
- (prod_len + unit_serial_len)) >
- cmd->data_length) {
- len += (prod_len + unit_serial_len);
- goto check_port;
- }
- id_len += sprintf((unsigned char *)&buf[off+12],
- "%s:%s", prod,
- &DEV_T10_WWN(dev)->unit_serial[0]);
- }
- buf[off] = 0x2; /* ASCII */
- buf[off+1] = 0x1; /* T10 Vendor ID */
- buf[off+2] = 0x0;
- memcpy((unsigned char *)&buf[off+4], "LIO-ORG", 8);
- /* Extra Byte for NULL Terminator */
- id_len++;
- /* Identifier Length */
- buf[off+3] = id_len;
- /* Header size for Designation descriptor */
- len += (id_len + 4);
- off += (id_len + 4);
- /*
- * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD
- */
-check_port:
- port = lun->lun_sep;
- if (port) {
- struct t10_alua_lu_gp *lu_gp;
- u32 padding, scsi_name_len;
- u16 lu_gp_id = 0;
- u16 tg_pt_gp_id = 0;
- u16 tpgt;
-
- tpg = port->sep_tpg;
- /*
- * Relative target port identifer, see spc4r17
- * section 7.7.3.7
- *
- * Get the PROTOCOL IDENTIFIER as defined by spc4r17
- * section 7.5.1 Table 362
- */
- if (((len + 4) + 8) > cmd->data_length) {
- len += 8;
- goto check_tpgi;
- }
- buf[off] =
- (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
- buf[off++] |= 0x1; /* CODE SET == Binary */
- buf[off] = 0x80; /* Set PIV=1 */
- /* Set ASSOICATION == target port: 01b */
- buf[off] |= 0x10;
- /* DESIGNATOR TYPE == Relative target port identifer */
- buf[off++] |= 0x4;
- off++; /* Skip over Reserved */
- buf[off++] = 4; /* DESIGNATOR LENGTH */
- /* Skip over Obsolete field in RTPI payload
- * in Table 472 */
- off += 2;
- buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
- buf[off++] = (port->sep_rtpi & 0xff);
- len += 8; /* Header size + Designation descriptor */
- /*
- * Target port group identifier, see spc4r17
- * section 7.7.3.8
- *
- * Get the PROTOCOL IDENTIFIER as defined by spc4r17
- * section 7.5.1 Table 362
- */
-check_tpgi:
- if (T10_ALUA(dev->se_sub_dev)->alua_type !=
- SPC3_ALUA_EMULATED)
- goto check_scsi_name;
-
- if (((len + 4) + 8) > cmd->data_length) {
- len += 8;
- goto check_lu_gp;
- }
- tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem;
- if (!(tg_pt_gp_mem))
- goto check_lu_gp;
-
- spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
- tg_pt_gp = tg_pt_gp_mem->tg_pt_gp;
- if (!(tg_pt_gp)) {
- spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
- goto check_lu_gp;
- }
- tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id;
- spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
-
- buf[off] =
- (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
- buf[off++] |= 0x1; /* CODE SET == Binary */
- buf[off] = 0x80; /* Set PIV=1 */
- /* Set ASSOICATION == target port: 01b */
- buf[off] |= 0x10;
- /* DESIGNATOR TYPE == Target port group identifier */
- buf[off++] |= 0x5;
- off++; /* Skip over Reserved */
- buf[off++] = 4; /* DESIGNATOR LENGTH */
- off += 2; /* Skip over Reserved Field */
- buf[off++] = ((tg_pt_gp_id >> 8) & 0xff);
- buf[off++] = (tg_pt_gp_id & 0xff);
- len += 8; /* Header size + Designation descriptor */
- /*
- * Logical Unit Group identifier, see spc4r17
- * section 7.7.3.8
- */
-check_lu_gp:
- if (((len + 4) + 8) > cmd->data_length) {
- len += 8;
- goto check_scsi_name;
- }
- lu_gp_mem = dev->dev_alua_lu_gp_mem;
- if (!(lu_gp_mem))
- goto check_scsi_name;
-
- spin_lock(&lu_gp_mem->lu_gp_mem_lock);
- lu_gp = lu_gp_mem->lu_gp;
- if (!(lu_gp)) {
- spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
- goto check_scsi_name;
- }
- lu_gp_id = lu_gp->lu_gp_id;
- spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
-
- buf[off++] |= 0x1; /* CODE SET == Binary */
- /* DESIGNATOR TYPE == Logical Unit Group identifier */
- buf[off++] |= 0x6;
- off++; /* Skip over Reserved */
- buf[off++] = 4; /* DESIGNATOR LENGTH */
- off += 2; /* Skip over Reserved Field */
- buf[off++] = ((lu_gp_id >> 8) & 0xff);
- buf[off++] = (lu_gp_id & 0xff);
- len += 8; /* Header size + Designation descriptor */
- /*
- * SCSI name string designator, see spc4r17
- * section 7.7.3.11
- *
- * Get the PROTOCOL IDENTIFIER as defined by spc4r17
- * section 7.5.1 Table 362
- */
-check_scsi_name:
- scsi_name_len = strlen(TPG_TFO(tpg)->tpg_get_wwn(tpg));
- /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */
- scsi_name_len += 10;
- /* Check for 4-byte padding */
- padding = ((-scsi_name_len) & 3);
- if (padding != 0)
- scsi_name_len += padding;
- /* Header size + Designation descriptor */
- scsi_name_len += 4;
-
- if (((len + 4) + scsi_name_len) > cmd->data_length) {
- len += scsi_name_len;
- goto set_len;
- }
- buf[off] =
- (TPG_TFO(tpg)->get_fabric_proto_ident(tpg) << 4);
- buf[off++] |= 0x3; /* CODE SET == UTF-8 */
- buf[off] = 0x80; /* Set PIV=1 */
- /* Set ASSOICATION == target port: 01b */
- buf[off] |= 0x10;
- /* DESIGNATOR TYPE == SCSI name string */
- buf[off++] |= 0x8;
- off += 2; /* Skip over Reserved and length */
- /*
- * SCSI name string identifer containing, $FABRIC_MOD
- * dependent information. For LIO-Target and iSCSI
- * Target Port, this means "<iSCSI name>,t,0x<TPGT> in
- * UTF-8 encoding.
- */
- tpgt = TPG_TFO(tpg)->tpg_get_tag(tpg);
- scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x",
- TPG_TFO(tpg)->tpg_get_wwn(tpg), tpgt);
- scsi_name_len += 1 /* Include NULL terminator */;
- /*
- * The null-terminated, null-padded (see 4.4.2) SCSI
- * NAME STRING field contains a UTF-8 format string.
- * The number of bytes in the SCSI NAME STRING field
- * (i.e., the value in the DESIGNATOR LENGTH field)
- * shall be no larger than 256 and shall be a multiple
- * of four.
- */
- if (padding)
- scsi_name_len += padding;
-
- buf[off-1] = scsi_name_len;
- off += scsi_name_len;
- /* Header size + Designation descriptor */
- len += (scsi_name_len + 4);
- }
-set_len:
- buf[2] = ((len >> 8) & 0xff);
- buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */
- break;
- case 0x86: /* Extended INQUIRY Data VPD Page */
- /*
- * This page uses a hardcoded value of 60
- */
- if (cmd->data_length < 60)
- return 0;
-
- buf[1] = 0x86;
- buf[2] = 0x3c;
- /* Set HEADSUP, ORDSUP, SIMPSUP */
- buf[5] = 0x07;
- /* If WriteCache emulation is enabled, set V_SUP */
- if (DEV_ATTRIB(dev)->emulate_write_cache > 0)
- buf[6] = 0x01;
-
- break;
- case 0xb0: /* Block Limits VPD page */
- /*
- * Following sbc3r22 section 6.5.3 Block Limits VPD page,
- * when emulate_tpu=1 or emulate_tpws=1 we will be expect
- * a different page length for Thin Provisioning.
- */
- if (!(DEV_ATTRIB(dev)->emulate_tpu) &&
- !(DEV_ATTRIB(dev)->emulate_tpws)) {
- if (cmd->data_length < (0x10 + 4)) {
- printk(KERN_INFO "Received data_length: %u"
- " too small for TPE=1 EVPD 0xb0\n",
- cmd->data_length);
- return -1;
- }
- buf[0] = TRANSPORT(dev)->get_device_type(dev);
- buf[1] = 0xb0;
- buf[3] = 0x10; /* Set hardcoded TPE=0 length */
- /*
- * Set OPTIMAL TRANSFER LENGTH GRANULARITY
- */
- put_unaligned_be16(1, &buf[6]);
- /*
- * Set MAXIMUM TRANSFER LENGTH
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->max_sectors,
- &buf[8]);
- /*
- * Set OPTIMAL TRANSFER LENGTH
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->optimal_sectors,
- &buf[12]);
- break;
- }
-
- if (cmd->data_length < (0x3c + 4)) {
- printk(KERN_INFO "Received data_length: %u"
- " too small for TPE=1 EVPD 0xb0\n",
- cmd->data_length);
- return -1;
- }
- buf[0] = TRANSPORT(dev)->get_device_type(dev);
- buf[1] = 0xb0;
- buf[3] = 0x3c; /* Set hardcoded TPE=1 length */
- /*
- * Set OPTIMAL TRANSFER LENGTH GRANULARITY
- * Note that this follows what scsi_debug.c reports to SCSI ML
- */
- put_unaligned_be16(1, &buf[6]);
- /*
- * Set MAXIMUM TRANSFER LENGTH
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->max_sectors, &buf[8]);
- /*
- * Set OPTIMAL TRANSFER LENGTH
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->optimal_sectors, &buf[12]);
- /*
- * Set MAXIMUM UNMAP LBA COUNT
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->max_unmap_lba_count,
- &buf[20]);
- /*
- * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->max_unmap_block_desc_count,
- &buf[24]);
- /*
- * Set OPTIMAL UNMAP GRANULARITY
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->unmap_granularity,
- &buf[28]);
- /*
- * UNMAP GRANULARITY ALIGNMENT
- */
- put_unaligned_be32(DEV_ATTRIB(dev)->unmap_granularity_alignment,
- &buf[32]);
- if (DEV_ATTRIB(dev)->unmap_granularity_alignment != 0)
- buf[32] |= 0x80; /* Set the UGAVALID bit */
- break;
- case 0xb2: /* Thin Provisioning VPD */
- /*
- * From sbc3r22 section 6.5.4 Thin Provisioning VPD page:
- *
- * The PAGE LENGTH field is defined in SPC-4. If the DP bit is
- * set to zero, then the page length shall be set to 0004h. If the
- * DP bit is set to one, then the page length shall be set to the value
- * defined in table 162.
- */
- buf[0] = TRANSPORT(dev)->get_device_type(dev);
- buf[1] = 0xb2;
- /*
- * Set Hardcoded length mentioned above for DP=0
- */
- put_unaligned_be16(0x0004, &buf[2]);
- /*
- * The THRESHOLD EXPONENT field indicates the threshold set size in LBAs
- * as a power of 2 (i.e., the threshold set size is equal to 2(threshold exponent)).
- *
- * Note that this is currently set to 0x00 as mkp says it will be
- * changing again. We can enable this once it has settled in T10
- * and is actually used by Linux/SCSI ML code.
- */
- buf[4] = 0x00;
- /*
- * A TPU bit set to one indicates that the device server supports
- * the UNMAP command (see 5.25). A TPU bit set to zero indicates
- * that the device server does not support the UNMAP command.
- */
- if (DEV_ATTRIB(dev)->emulate_tpu != 0)
- buf[5] = 0x80;
- /*
- * A TPWS bit set to one indicates that the device server supports
- * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs.
- * A TPWS bit set to zero indicates that the device server does not
- * support the use of the WRITE SAME (16) command to unmap LBAs.
- */
- if (DEV_ATTRIB(dev)->emulate_tpws != 0)
- buf[5] |= 0x40;
- break;
- default:
- printk(KERN_ERR "Unknown VPD Code: 0x%02x\n", cdb[2]);
- return -1;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_emulate_inquiry);
-
-int transport_generic_emulate_readcapacity(
- struct se_cmd *cmd,
- u32 blocks)
-{
- struct se_device *dev = SE_DEV(cmd);
- unsigned char *buf = (unsigned char *) T_TASK(cmd)->t_task_buf;
-
- buf[0] = (blocks >> 24) & 0xff;
- buf[1] = (blocks >> 16) & 0xff;
- buf[2] = (blocks >> 8) & 0xff;
- buf[3] = blocks & 0xff;
- buf[4] = (DEV_ATTRIB(dev)->block_size >> 24) & 0xff;
- buf[5] = (DEV_ATTRIB(dev)->block_size >> 16) & 0xff;
- buf[6] = (DEV_ATTRIB(dev)->block_size >> 8) & 0xff;
- buf[7] = DEV_ATTRIB(dev)->block_size & 0xff;
- /*
- * Set max 32-bit blocks to signal SERVICE ACTION READ_CAPACITY_16
- */
- if (DEV_ATTRIB(dev)->emulate_tpu || DEV_ATTRIB(dev)->emulate_tpws)
- put_unaligned_be32(0xFFFFFFFF, &buf[0]);
-
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_emulate_readcapacity);
-
-int transport_generic_emulate_readcapacity_16(
- struct se_cmd *cmd,
- unsigned long long blocks)
-{
- struct se_device *dev = SE_DEV(cmd);
- unsigned char *buf = (unsigned char *) T_TASK(cmd)->t_task_buf;
-
- buf[0] = (blocks >> 56) & 0xff;
- buf[1] = (blocks >> 48) & 0xff;
- buf[2] = (blocks >> 40) & 0xff;
- buf[3] = (blocks >> 32) & 0xff;
- buf[4] = (blocks >> 24) & 0xff;
- buf[5] = (blocks >> 16) & 0xff;
- buf[6] = (blocks >> 8) & 0xff;
- buf[7] = blocks & 0xff;
- buf[8] = (DEV_ATTRIB(dev)->block_size >> 24) & 0xff;
- buf[9] = (DEV_ATTRIB(dev)->block_size >> 16) & 0xff;
- buf[10] = (DEV_ATTRIB(dev)->block_size >> 8) & 0xff;
- buf[11] = DEV_ATTRIB(dev)->block_size & 0xff;
- /*
- * Set Thin Provisioning Enable bit following sbc3r22 in section
- * READ CAPACITY (16) byte 14 if emulate_tpu or emulate_tpws is enabled.
- */
- if (DEV_ATTRIB(dev)->emulate_tpu || DEV_ATTRIB(dev)->emulate_tpws)
- buf[14] = 0x80;
-
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_emulate_readcapacity_16);
-
-static int transport_modesense_rwrecovery(unsigned char *p)
-{
- p[0] = 0x01;
- p[1] = 0x0a;
-
- return 12;
-}
-
-static int transport_modesense_control(struct se_device *dev, unsigned char *p)
-{
- p[0] = 0x0a;
- p[1] = 0x0a;
- p[2] = 2;
- /*
- * From spc4r17, section 7.4.6 Control mode Page
- *
- * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b
- *
- * 00b: The logical unit shall clear any unit attention condition
- * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
- * status and shall not establish a unit attention condition when a com-
- * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT
- * status.
- *
- * 10b: The logical unit shall not clear any unit attention condition
- * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
- * status and shall not establish a unit attention condition when
- * a command is completed with BUSY, TASK SET FULL, or RESERVATION
- * CONFLICT status.
- *
- * 11b a The logical unit shall not clear any unit attention condition
- * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION
- * status and shall establish a unit attention condition for the
- * initiator port associated with the I_T nexus on which the BUSY,
- * TASK SET FULL, or RESERVATION CONFLICT status is being returned.
- * Depending on the status, the additional sense code shall be set to
- * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS
- * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE
- * command, a unit attention condition shall be established only once
- * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless
- * to the number of commands completed with one of those status codes.
- */
- p[4] = (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl == 2) ? 0x30 :
- (DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00;
- /*
- * From spc4r17, section 7.4.6 Control mode Page
- *
- * Task Aborted Status (TAS) bit set to zero.
- *
- * A task aborted status (TAS) bit set to zero specifies that aborted
- * tasks shall be terminated by the device server without any response
- * to the application client. A TAS bit set to one specifies that tasks
- * aborted by the actions of an I_T nexus other than the I_T nexus on
- * which the command was received shall be completed with TASK ABORTED
- * status (see SAM-4).
- */
- p[5] = (DEV_ATTRIB(dev)->emulate_tas) ? 0x40 : 0x00;
- p[8] = 0xff;
- p[9] = 0xff;
- p[11] = 30;
-
- return 12;
-}
-
-static int transport_modesense_caching(struct se_device *dev, unsigned char *p)
-{
- p[0] = 0x08;
- p[1] = 0x12;
- if (DEV_ATTRIB(dev)->emulate_write_cache > 0)
- p[2] = 0x04; /* Write Cache Enable */
- p[12] = 0x20; /* Disabled Read Ahead */
-
- return 20;
-}
-
-#if 0
-static int transport_modesense_devicecaps(unsigned char *p)
-{
- p[0] = 0x2a;
- p[1] = 0x0a;
-
- return 12;
-}
-#endif
-
-static void transport_modesense_write_protect(
- unsigned char *buf,
- int type)
-{
- /*
- * I believe that the WP bit (bit 7) in the mode header is the same for
- * all device types..
- */
- switch (type) {
- case TYPE_DISK:
- case TYPE_TAPE:
- default:
- buf[0] |= 0x80; /* WP bit */
- break;
- }
-}
-
-static void transport_modesense_dpofua(
- unsigned char *buf,
- int type)
-{
- switch (type) {
- case TYPE_DISK:
- buf[0] |= 0x10; /* DPOFUA bit */
- break;
- default:
- break;
- }
-}
-
-int transport_generic_emulate_modesense(
- struct se_cmd *cmd,
- unsigned char *cdb,
- unsigned char *rbuf,
- int ten,
- int type)
-{
- struct se_device *dev = SE_DEV(cmd);
- int offset = (ten) ? 8 : 4;
- int length = 0;
- unsigned char buf[SE_MODE_PAGE_BUF];
-
- memset(buf, 0, SE_MODE_PAGE_BUF);
-
- switch (cdb[2] & 0x3f) {
- case 0x01:
- length = transport_modesense_rwrecovery(&buf[offset]);
- break;
- case 0x08:
- length = transport_modesense_caching(dev, &buf[offset]);
- break;
- case 0x0a:
- length = transport_modesense_control(dev, &buf[offset]);
- break;
-#if 0
- case 0x2a:
- length = transport_modesense_devicecaps(&buf[offset]);
- break;
-#endif
- case 0x3f:
- length = transport_modesense_rwrecovery(&buf[offset]);
- length += transport_modesense_caching(dev, &buf[offset+length]);
- length += transport_modesense_control(dev, &buf[offset+length]);
-#if 0
- length += transport_modesense_devicecaps(&buf[offset+length]);
-#endif
- break;
- default:
- printk(KERN_ERR "Got Unknown Mode Page: 0x%02x\n",
- cdb[2] & 0x3f);
- return PYX_TRANSPORT_UNKNOWN_MODE_PAGE;
- }
- offset += length;
-
- if (ten) {
- offset -= 2;
- buf[0] = (offset >> 8) & 0xff;
- buf[1] = offset & 0xff;
-
- if ((SE_LUN(cmd)->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) ||
- (cmd->se_deve &&
- (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
- transport_modesense_write_protect(&buf[3], type);
-
- if ((DEV_ATTRIB(dev)->emulate_write_cache > 0) &&
- (DEV_ATTRIB(dev)->emulate_fua_write > 0))
- transport_modesense_dpofua(&buf[3], type);
-
- if ((offset + 2) > cmd->data_length)
- offset = cmd->data_length;
-
- } else {
- offset -= 1;
- buf[0] = offset & 0xff;
-
- if ((SE_LUN(cmd)->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) ||
- (cmd->se_deve &&
- (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)))
- transport_modesense_write_protect(&buf[2], type);
-
- if ((DEV_ATTRIB(dev)->emulate_write_cache > 0) &&
- (DEV_ATTRIB(dev)->emulate_fua_write > 0))
- transport_modesense_dpofua(&buf[2], type);
-
- if ((offset + 1) > cmd->data_length)
- offset = cmd->data_length;
- }
- memcpy(rbuf, buf, offset);
-
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_emulate_modesense);
-
-int transport_generic_emulate_request_sense(
- struct se_cmd *cmd,
- unsigned char *cdb)
-{
- unsigned char *buf = (unsigned char *) T_TASK(cmd)->t_task_buf;
- u8 ua_asc = 0, ua_ascq = 0;
-
- if (cdb[1] & 0x01) {
- printk(KERN_ERR "REQUEST_SENSE description emulation not"
- " supported\n");
- return PYX_TRANSPORT_INVALID_CDB_FIELD;
- }
- if (!(core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq))) {
- /*
- * CURRENT ERROR, UNIT ATTENTION
- */
- buf[0] = 0x70;
- buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
- /*
- * Make sure request data length is enough for additional
- * sense data.
- */
- if (cmd->data_length <= 18) {
- buf[7] = 0x00;
- return 0;
- }
- /*
- * The Additional Sense Code (ASC) from the UNIT ATTENTION
- */
- buf[SPC_ASC_KEY_OFFSET] = ua_asc;
- buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq;
- buf[7] = 0x0A;
- } else {
- /*
- * CURRENT ERROR, NO SENSE
- */
- buf[0] = 0x70;
- buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE;
- /*
- * Make sure request data length is enough for additional
- * sense data.
- */
- if (cmd->data_length <= 18) {
- buf[7] = 0x00;
- return 0;
- }
- /*
- * NO ADDITIONAL SENSE INFORMATION
- */
- buf[SPC_ASC_KEY_OFFSET] = 0x00;
- buf[7] = 0x0A;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_emulate_request_sense);
-
static void transport_xor_callback(struct se_cmd *cmd)
{
unsigned char *buf, *addr;
@@ -5385,215 +4520,6 @@ int transport_get_sense_data(struct se_c
return -1;
}
-/*
- * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
- * Note this is not used for TCM/pSCSI passthrough
- */
-static int transport_generic_unmap(struct se_task *task)
-{
- struct se_cmd *cmd = TASK_CMD(task);
- struct se_device *dev = SE_DEV(cmd);
- unsigned char *buf = T_TASK(cmd)->t_task_buf, *ptr = NULL;
- unsigned char *cdb = &T_TASK(cmd)->t_task_cdb[0];
- sector_t lba;
- unsigned int size = cmd->data_length, range;
- int ret, offset = 8; /* First UNMAP block descriptor starts at 8 byte offset */
- unsigned short dl, bd_dl;
-
- /* Skip over UNMAP header */
- size -= 8;
- dl = get_unaligned_be16(&cdb[0]);
- bd_dl = get_unaligned_be16(&cdb[2]);
- ptr = &buf[offset];
- printk(KERN_INFO "UNMAP: Sub: %s Using dl: %hu bd_dl: %hu size: %hu"
- " ptr: %p\n", TRANSPORT(dev)->name, dl, bd_dl, size, ptr);
-
- while (size) {
- lba = get_unaligned_be64(&ptr[0]);
- range = get_unaligned_be32(&ptr[8]);
- printk(KERN_INFO "UNMAP: Using lba: %llu and range: %u\n",
- (unsigned long long)lba, range);
-
- ret = TRANSPORT(dev)->do_discard(dev, lba, range);
- if (ret < 0) {
- printk(KERN_ERR "blkdev_issue_discard() failed: %d\n", ret);
- return -1;
- }
-
- ptr += 16;
- size -= 16;
- }
-
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
- return 0;
-}
-
-/*
- * Used for TCM/IBLOCK and TCM/FILEIO for block/blk-lib.c level discard support.
- * Note this is not used for TCM/pSCSI passthrough
- */
-static int transport_generic_write_same(struct se_task *task)
-{
- struct se_cmd *cmd = TASK_CMD(task);
- struct se_device *dev = SE_DEV(cmd);
- sector_t lba;
- unsigned int range;
- int ret;
-
- lba = T_TASK(cmd)->t_task_lba;
- range = (cmd->data_length / DEV_ATTRIB(dev)->block_size);
-
- printk(KERN_INFO "WRITE_SAME UNMAP: LBA: %llu Range: %u\n",
- (unsigned long long)lba, range);
-
- ret = TRANSPORT(dev)->do_discard(dev, lba, range);
- if (ret < 0) {
- printk(KERN_INFO "blkdev_issue_discard() failed for WRITE_SAME\n");
- return -1;
- }
-
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
- return 0;
-}
-
-/*
- * Used by TCM subsystem plugins IBLOCK, FILEIO, and RAMDISK as a
- * generic non SCF_SCSI_DATA_SG_IO_CDB ops.
- */
-int transport_emulate_control_cdb(struct se_task *task)
-{
- struct se_cmd *cmd = TASK_CMD(task);
- struct se_device *dev = SE_DEV(cmd);
- sector_t blocks_long;
- unsigned int blocks;
- int ret;
- unsigned short service_action;
-
- switch (T_TASK(cmd)->t_task_cdb[0]) {
- case INQUIRY:
- ret = transport_generic_emulate_inquiry(cmd,
- TRANSPORT(dev)->get_device_type(dev),
- &DEV_T10_WWN(dev)->model[0],
- &DEV_T10_WWN(dev)->revision[0]);
- if (ret < 0)
- return ret;
- break;
- case READ_CAPACITY:
- blocks = TRANSPORT(dev)->get_blocks(dev);
- ret = transport_generic_emulate_readcapacity(cmd,
- blocks);
- if (ret < 0)
- return ret;
- break;
- case MODE_SENSE:
- ret = transport_generic_emulate_modesense(TASK_CMD(task),
- T_TASK(cmd)->t_task_cdb,
- T_TASK(cmd)->t_task_buf, 0,
- TRANSPORT(dev)->get_device_type(dev));
- if (ret < 0)
- return ret;
- break;
- case MODE_SENSE_10:
- ret = transport_generic_emulate_modesense(TASK_CMD(task),
- T_TASK(cmd)->t_task_cdb,
- T_TASK(cmd)->t_task_buf, 1,
- TRANSPORT(dev)->get_device_type(dev));
- if (ret < 0)
- return ret;
- break;
- case SERVICE_ACTION_IN:
- switch (T_TASK(cmd)->t_task_cdb[1] & 0x1f) {
- case SAI_READ_CAPACITY_16:
- blocks_long = TRANSPORT(dev)->get_blocks(dev);
- ret = transport_generic_emulate_readcapacity_16(cmd,
- blocks_long);
- if (ret < 0)
- return ret;
- break;
- default:
- printk(KERN_ERR "Unsupported SA: 0x%02x\n",
- T_TASK(cmd)->t_task_cdb[1] & 0x1f);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
- case REQUEST_SENSE:
- ret = transport_generic_emulate_request_sense(cmd,
- T_TASK(cmd)->t_task_cdb);
- if (ret < 0)
- return ret;
- break;
- case UNMAP:
- if (!(TRANSPORT(dev)->do_discard)) {
- printk(KERN_ERR "UNMAP emulation not supported for: %s\n",
- TRANSPORT(dev)->name);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
- ret = transport_generic_unmap(task);
- if (ret < 0)
- return ret;
- break;
- case WRITE_SAME_16:
- if (!(TRANSPORT(dev)->do_discard)) {
- printk(KERN_ERR "WRITE_SAME_16 emulation not supported"
- " for: %s\n", TRANSPORT(dev)->name);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
- ret = transport_generic_write_same(task);
- if (ret < 0)
- return ret;
- break;
- case VARIABLE_LENGTH_CMD:
- service_action = get_unaligned_be16(&T_TASK(cmd)->t_task_cdb[8]);
- switch (service_action) {
- case WRITE_SAME_32:
- if (!(TRANSPORT(dev)->do_discard)) {
- printk(KERN_ERR "WRITE_SAME_32 SA emulation not"
- " supported for: %s\n", TRANSPORT(dev)->name);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
- ret = transport_generic_write_same(task);
- if (ret < 0)
- return ret;
- break;
- default:
- printk(KERN_ERR "Unsupported VARIABLE_LENGTH_CMD SA:"
- " 0x%02x\n", service_action);
- break;
- }
- break;
- case SYNCHRONIZE_CACHE:
- case 0x91: /* SYNCHRONIZE_CACHE_16: */
- if (!(TRANSPORT(dev)->do_sync_cache)) {
- printk(KERN_ERR "SYNCHRONIZE_CACHE emulation not supported"
- " for: %s\n", TRANSPORT(dev)->name);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
- TRANSPORT(dev)->do_sync_cache(task);
- break;
- case ALLOW_MEDIUM_REMOVAL:
- case ERASE:
- case REZERO_UNIT:
- case SEEK_10:
- case SPACE:
- case START_STOP:
- case TEST_UNIT_READY:
- case VERIFY:
- case WRITE_FILEMARKS:
- break;
- default:
- printk(KERN_ERR "Unsupported SCSI Opcode: 0x%02x for %s\n",
- T_TASK(cmd)->t_task_cdb[0], TRANSPORT(dev)->name);
- return PYX_TRANSPORT_UNKNOWN_SAM_OPCODE;
- }
-
- task->task_scsi_status = GOOD;
- transport_complete_task(task, 1);
-
- return PYX_TRANSPORT_SENT_TO_TRANSPORT;
-}
-EXPORT_SYMBOL(transport_emulate_control_cdb);
-
static inline void transport_dev_get_mem_buf(
struct se_device *dev,
struct se_cmd *cmd)
Index: lio-core-2.6/include/target/target_core_transport.h
===================================================================
--- lio-core-2.6.orig/include/target/target_core_transport.h 2010-11-08 17:06:49.151529680 +0100
+++ lio-core-2.6/include/target/target_core_transport.h 2010-11-08 17:06:49.221529679 +0100
@@ -221,16 +221,6 @@ extern void transport_stop_task_timer(st
extern void transport_stop_all_task_timers(struct se_cmd *);
extern int transport_execute_tasks(struct se_cmd *);
extern unsigned char transport_asciihex_to_binaryhex(unsigned char val[2]);
-extern int transport_generic_emulate_inquiry(struct se_cmd *, unsigned char,
- unsigned char *, unsigned char *);
-extern int transport_generic_emulate_readcapacity(struct se_cmd *, u32);
-extern int transport_generic_emulate_readcapacity_16(struct se_cmd *,
- unsigned long long);
-extern int transport_generic_emulate_modesense(struct se_cmd *,
- unsigned char *,
- unsigned char *, int, int);
-extern int transport_generic_emulate_request_sense(struct se_cmd *,
- unsigned char *);
extern int transport_get_sense_data(struct se_cmd *);
extern int transport_emulate_control_cdb(struct se_task *);
extern struct se_cmd *transport_allocate_passthrough(unsigned char *, int, u32,
Index: lio-core-2.6/drivers/target/Kbuild
===================================================================
--- lio-core-2.6.orig/drivers/target/Kbuild 2010-11-08 17:07:01.288196347 +0100
+++ lio-core-2.6/drivers/target/Kbuild 2010-11-08 17:07:18.058196348 +0100
@@ -11,6 +11,7 @@ target_core_mod-y := target_core_config
target_core_tmr.o \
target_core_tpg.o \
target_core_transport.o \
+ target_core_cdb.o \
target_core_ua.o \
target_core_rd.o \
target_core_mib.o
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
