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ctl_frontend_iscsi.c (268147) ctl_frontend_iscsi.c (268257)
1/*-
2 * Copyright (c) 2012 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without

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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
1/*-
2 * Copyright (c) 2012 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Edward Tomasz Napierala under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without

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21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268147 2014-07-02 10:39:45Z mav $
29 * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268257 2014-07-04 16:06:56Z mav $
30 */
31
32/*
33 * CTL frontend for the iSCSI protocol.
34 */
35
36#include <sys/cdefs.h>
30 */
31
32/*
33 * CTL frontend for the iSCSI protocol.
34 */
35
36#include <sys/cdefs.h>
37__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268147 2014-07-02 10:39:45Z mav $");
37__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268257 2014-07-04 16:06:56Z mav $");
38
39#include <sys/param.h>
40#include <sys/capability.h>
41#include <sys/condvar.h>
42#include <sys/file.h>
43#include <sys/kernel.h>
44#include <sys/kthread.h>
45#include <sys/lock.h>

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2027 return (0);
2028}
2029
2030static int
2031cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len)
2032{
2033 struct cfiscsi_session *cs;
2034 struct scsi_vpd_device_id *devid_ptr;
38
39#include <sys/param.h>
40#include <sys/capability.h>
41#include <sys/condvar.h>
42#include <sys/file.h>
43#include <sys/kernel.h>
44#include <sys/kthread.h>
45#include <sys/lock.h>

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2027 return (0);
2028}
2029
2030static int
2031cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len)
2032{
2033 struct cfiscsi_session *cs;
2034 struct scsi_vpd_device_id *devid_ptr;
2035 struct scsi_vpd_id_descriptor *desc, *desc1;
2036 struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */
2035 struct scsi_vpd_id_descriptor *desc, *desc1, *desc2, *desc3, *desc4;
2037 struct scsi_vpd_id_t10 *t10id;
2038 struct ctl_lun *lun;
2039 const struct icl_pdu *request;
2036 struct scsi_vpd_id_t10 *t10id;
2037 struct ctl_lun *lun;
2038 const struct icl_pdu *request;
2039 int i, ret;
2040 char *val;
2040 char *val;
2041 size_t devid_len, wwpn_len;
2041 size_t devid_len, wwpn_len, lun_name_len;
2042
2043 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
2044 request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2045 cs = PDU_SESSION(request);
2046
2047 wwpn_len = strlen(cs->cs_target->ct_name);
2048 wwpn_len += strlen(",t,0x0001");
2049 wwpn_len += 1; /* '\0' */
2050 if ((wwpn_len % 4) != 0)
2051 wwpn_len += (4 - (wwpn_len % 4));
2052
2042
2043 lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
2044 request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
2045 cs = PDU_SESSION(request);
2046
2047 wwpn_len = strlen(cs->cs_target->ct_name);
2048 wwpn_len += strlen(",t,0x0001");
2049 wwpn_len += 1; /* '\0' */
2050 if ((wwpn_len % 4) != 0)
2051 wwpn_len += (4 - (wwpn_len % 4));
2052
2053 if (lun == NULL) {
2054 lun_name_len = 0;
2055 } else {
2056 lun_name_len = strlen(cs->cs_target->ct_name);
2057 lun_name_len += strlen(",lun,XXXXXXXX");
2058 lun_name_len += 1; /* '\0' */
2059 if ((lun_name_len % 4) != 0)
2060 lun_name_len += (4 - (lun_name_len % 4));
2061 }
2062
2053 devid_len = sizeof(struct scsi_vpd_device_id) +
2054 sizeof(struct scsi_vpd_id_descriptor) +
2055 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN +
2063 devid_len = sizeof(struct scsi_vpd_device_id) +
2064 sizeof(struct scsi_vpd_id_descriptor) +
2065 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN +
2066 sizeof(struct scsi_vpd_id_descriptor) + lun_name_len +
2056 sizeof(struct scsi_vpd_id_descriptor) + wwpn_len +
2057 sizeof(struct scsi_vpd_id_descriptor) +
2058 sizeof(struct scsi_vpd_id_rel_trgt_port_id) +
2059 sizeof(struct scsi_vpd_id_descriptor) +
2060 sizeof(struct scsi_vpd_id_trgt_port_grp_id);
2061
2062 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO);
2063 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr;

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2076 ctsio->kern_rel_offset = 0;
2077 ctsio->kern_sg_entries = 0;
2078
2079 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list;
2080 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0];
2081 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] +
2082 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN);
2083 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] +
2067 sizeof(struct scsi_vpd_id_descriptor) + wwpn_len +
2068 sizeof(struct scsi_vpd_id_descriptor) +
2069 sizeof(struct scsi_vpd_id_rel_trgt_port_id) +
2070 sizeof(struct scsi_vpd_id_descriptor) +
2071 sizeof(struct scsi_vpd_id_trgt_port_grp_id);
2072
2073 ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO);
2074 devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr;

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2087 ctsio->kern_rel_offset = 0;
2088 ctsio->kern_sg_entries = 0;
2089
2090 desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list;
2091 t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0];
2092 desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] +
2093 sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN);
2094 desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] +
2084 wwpn_len);
2095 lun_name_len);
2085 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] +
2096 desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] +
2097 wwpn_len);
2098 desc4 = (struct scsi_vpd_id_descriptor *)(&desc3->identifier[0] +
2086 sizeof(struct scsi_vpd_id_rel_trgt_port_id));
2087
2088 if (lun != NULL)
2089 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
2090 lun->be_lun->lun_type;
2091 else
2092 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
2093

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2123 } else {
2124 /*
2125 * No backend, set this to spaces.
2126 */
2127 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN);
2128 }
2129
2130 /*
2099 sizeof(struct scsi_vpd_id_rel_trgt_port_id));
2100
2101 if (lun != NULL)
2102 devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
2103 lun->be_lun->lun_type;
2104 else
2105 devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
2106

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2136 } else {
2137 /*
2138 * No backend, set this to spaces.
2139 */
2140 memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN);
2141 }
2142
2143 /*
2131 * desc1 is for the WWPN which is a port asscociation.
2144 * desc1 is for the unique LUN name.
2145 *
2146 * XXX: According to SPC-3, LUN must report the same ID through
2147 * all the ports. The code below, however, reports the
2148 * ID only via iSCSI.
2132 */
2149 */
2133 desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8;
2134 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2135 SVPD_ID_TYPE_SCSI_NAME;
2136 desc1->length = wwpn_len;
2137 snprintf(desc1->identifier, wwpn_len, "%s,t,0x%4.4x",
2138 cs->cs_target->ct_name, cs->cs_portal_group_tag);
2150 desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8;
2151 desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN |
2152 SVPD_ID_TYPE_SCSI_NAME;
2153 desc1->length = lun_name_len;
2154 if (lun != NULL) {
2155 /*
2156 * Find the per-target LUN number.
2157 */
2158 for (i = 0; i < CTL_MAX_LUNS; i++) {
2159 if (cs->cs_target->ct_luns[i] == lun->lun)
2160 break;
2161 }
2162 KASSERT(i < CTL_MAX_LUNS,
2163 ("lun %jd not found", (uintmax_t)lun->lun));
2164 ret = snprintf(desc1->identifier, lun_name_len, "%s,lun,%d",
2165 cs->cs_target->ct_name, i);
2166 KASSERT(ret > 0 && ret <= lun_name_len, ("bad snprintf"));
2167 } else {
2168 KASSERT(lun_name_len == 0, ("no lun, but lun_name_len != 0"));
2169 }
2139
2140 /*
2170
2171 /*
2141 * desc2 is for the Relative Target Port(type 4h) identifier
2172 * desc2 is for the WWPN which is a port asscociation.
2142 */
2173 */
2143 desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY;
2174 desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8;
2144 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2175 desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2145 SVPD_ID_TYPE_RELTARG;
2146 desc2->length = 4;
2147 desc2->identifier[3] = 1;
2176 SVPD_ID_TYPE_SCSI_NAME;
2177 desc2->length = wwpn_len;
2178 snprintf(desc2->identifier, wwpn_len, "%s,t,0x%4.4x",
2179 cs->cs_target->ct_name, cs->cs_portal_group_tag);
2148
2149 /*
2180
2181 /*
2150 * desc3 is for the Target Port Group(type 5h) identifier
2182 * desc3 is for the Relative Target Port(type 4h) identifier
2151 */
2152 desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY;
2153 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2183 */
2184 desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY;
2185 desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2154 SVPD_ID_TYPE_TPORTGRP;
2186 SVPD_ID_TYPE_RELTARG;
2155 desc3->length = 4;
2156 desc3->identifier[3] = 1;
2157
2187 desc3->length = 4;
2188 desc3->identifier[3] = 1;
2189
2190 /*
2191 * desc4 is for the Target Port Group(type 5h) identifier
2192 */
2193 desc4->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY;
2194 desc4->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT |
2195 SVPD_ID_TYPE_TPORTGRP;
2196 desc4->length = 4;
2197 desc4->identifier[3] = 1;
2198
2158 ctsio->scsi_status = SCSI_STATUS_OK;
2159
2160 ctsio->be_move_done = ctl_config_move_done;
2161 ctl_datamove((union ctl_io *)ctsio);
2162
2163 return (CTL_RETVAL_COMPLETE);
2164}
2165

--- 713 unchanged lines hidden --- 		2199 ctsio->scsi_status = SCSI_STATUS_OK;
2200
2201 ctsio->be_move_done = ctl_config_move_done;
2202 ctl_datamove((union ctl_io *)ctsio);
2203
2204 return (CTL_RETVAL_COMPLETE);
2205}
2206

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