1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_fabric_lib.c 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains generic high level protocol identifier and PR 5c66ac9dbSNicholas Bellinger * handlers for TCM fabric modules 6c66ac9dbSNicholas Bellinger * 74c76251eSNicholas Bellinger * (c) Copyright 2010-2013 Datera, Inc. 8c66ac9dbSNicholas Bellinger * 9c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@linux-iscsi.org> 10c66ac9dbSNicholas Bellinger * 11c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 12c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 13c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 14c66ac9dbSNicholas Bellinger * (at your option) any later version. 15c66ac9dbSNicholas Bellinger * 16c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 17c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 18c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 20c66ac9dbSNicholas Bellinger * 21c66ac9dbSNicholas Bellinger * You should have received a copy of the GNU General Public License 22c66ac9dbSNicholas Bellinger * along with this program; if not, write to the Free Software 23c66ac9dbSNicholas Bellinger * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24c66ac9dbSNicholas Bellinger * 25c66ac9dbSNicholas Bellinger ******************************************************************************/ 26c66ac9dbSNicholas Bellinger 272650d71eSChristoph Hellwig /* 282650d71eSChristoph Hellwig * See SPC4, section 7.5 "Protocol specific parameters" for details 292650d71eSChristoph Hellwig * on the formats implemented in this file. 302650d71eSChristoph Hellwig */ 312650d71eSChristoph Hellwig 3211650b85SAndy Shevchenko #include <linux/kernel.h> 33c66ac9dbSNicholas Bellinger #include <linux/string.h> 34c66ac9dbSNicholas Bellinger #include <linux/ctype.h> 35c66ac9dbSNicholas Bellinger #include <linux/spinlock.h> 36c53181afSPaul Gortmaker #include <linux/export.h> 37a85d667eSBart Van Assche #include <asm/unaligned.h> 38c66ac9dbSNicholas Bellinger 396546a02aSStephen Rothwell #include <scsi/scsi_proto.h> 406546a02aSStephen Rothwell 41c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 43c66ac9dbSNicholas Bellinger 44e26d99aeSChristoph Hellwig #include "target_core_internal.h" 45c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 46c66ac9dbSNicholas Bellinger 47c66ac9dbSNicholas Bellinger 482650d71eSChristoph Hellwig static int sas_get_pr_transport_id( 492650d71eSChristoph Hellwig struct se_node_acl *nacl, 50c66ac9dbSNicholas Bellinger int *format_code, 51c66ac9dbSNicholas Bellinger unsigned char *buf) 52c66ac9dbSNicholas Bellinger { 538c35ad20SMimi Zohar int ret; 5411650b85SAndy Shevchenko 552650d71eSChristoph Hellwig /* Skip over 'naa. prefix */ 562650d71eSChristoph Hellwig ret = hex2bin(&buf[4], &nacl->initiatorname[4], 8); 572650d71eSChristoph Hellwig if (ret) { 582650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 592650d71eSChristoph Hellwig return ret; 602650d71eSChristoph Hellwig } 61c66ac9dbSNicholas Bellinger 62c66ac9dbSNicholas Bellinger return 24; 63c66ac9dbSNicholas Bellinger } 64c66ac9dbSNicholas Bellinger 652650d71eSChristoph Hellwig static int fc_get_pr_transport_id( 66c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 67c66ac9dbSNicholas Bellinger int *format_code, 68c66ac9dbSNicholas Bellinger unsigned char *buf) 69c66ac9dbSNicholas Bellinger { 7011650b85SAndy Shevchenko unsigned char *ptr; 718c35ad20SMimi Zohar int i, ret; 72c66ac9dbSNicholas Bellinger u32 off = 8; 738c35ad20SMimi Zohar 74c66ac9dbSNicholas Bellinger /* 75c66ac9dbSNicholas Bellinger * We convert the ASCII formatted N Port name into a binary 76c66ac9dbSNicholas Bellinger * encoded TransportID. 77c66ac9dbSNicholas Bellinger */ 78c66ac9dbSNicholas Bellinger ptr = &se_nacl->initiatorname[0]; 79c66ac9dbSNicholas Bellinger for (i = 0; i < 24; ) { 806708bb27SAndy Grover if (!strncmp(&ptr[i], ":", 1)) { 81c66ac9dbSNicholas Bellinger i++; 82c66ac9dbSNicholas Bellinger continue; 83c66ac9dbSNicholas Bellinger } 848c35ad20SMimi Zohar ret = hex2bin(&buf[off++], &ptr[i], 1); 852650d71eSChristoph Hellwig if (ret < 0) { 862650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 872650d71eSChristoph Hellwig return ret; 882650d71eSChristoph Hellwig } 89c66ac9dbSNicholas Bellinger i += 2; 90c66ac9dbSNicholas Bellinger } 91c66ac9dbSNicholas Bellinger /* 92c66ac9dbSNicholas Bellinger * The FC Transport ID is a hardcoded 24-byte length 93c66ac9dbSNicholas Bellinger */ 94c66ac9dbSNicholas Bellinger return 24; 95c66ac9dbSNicholas Bellinger } 96c66ac9dbSNicholas Bellinger 972650d71eSChristoph Hellwig static int sbp_get_pr_transport_id( 982650d71eSChristoph Hellwig struct se_node_acl *nacl, 992650d71eSChristoph Hellwig int *format_code, 1002650d71eSChristoph Hellwig unsigned char *buf) 101c66ac9dbSNicholas Bellinger { 1022650d71eSChristoph Hellwig int ret; 103c66ac9dbSNicholas Bellinger 1042650d71eSChristoph Hellwig ret = hex2bin(&buf[8], nacl->initiatorname, 8); 1052650d71eSChristoph Hellwig if (ret) { 1062650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 1072650d71eSChristoph Hellwig return ret; 108c66ac9dbSNicholas Bellinger } 109c66ac9dbSNicholas Bellinger 1102650d71eSChristoph Hellwig return 24; 1112650d71eSChristoph Hellwig } 112c66ac9dbSNicholas Bellinger 1132650d71eSChristoph Hellwig static int srp_get_pr_transport_id( 1142650d71eSChristoph Hellwig struct se_node_acl *nacl, 1152650d71eSChristoph Hellwig int *format_code, 1162650d71eSChristoph Hellwig unsigned char *buf) 117c66ac9dbSNicholas Bellinger { 1182650d71eSChristoph Hellwig const char *p; 1192650d71eSChristoph Hellwig unsigned len, count, leading_zero_bytes; 1202650d71eSChristoph Hellwig int rc; 121c66ac9dbSNicholas Bellinger 1222650d71eSChristoph Hellwig p = nacl->initiatorname; 1232650d71eSChristoph Hellwig if (strncasecmp(p, "0x", 2) == 0) 1242650d71eSChristoph Hellwig p += 2; 1252650d71eSChristoph Hellwig len = strlen(p); 1262650d71eSChristoph Hellwig if (len % 2) 1272650d71eSChristoph Hellwig return -EINVAL; 1282650d71eSChristoph Hellwig 1292650d71eSChristoph Hellwig count = min(len / 2, 16U); 1302650d71eSChristoph Hellwig leading_zero_bytes = 16 - count; 1312650d71eSChristoph Hellwig memset(buf + 8, 0, leading_zero_bytes); 1322650d71eSChristoph Hellwig rc = hex2bin(buf + 8 + leading_zero_bytes, p, count); 1332650d71eSChristoph Hellwig if (rc < 0) { 1342650d71eSChristoph Hellwig pr_debug("hex2bin failed for %s: %d\n", __func__, rc); 1352650d71eSChristoph Hellwig return rc; 1362650d71eSChristoph Hellwig } 1372650d71eSChristoph Hellwig 1382650d71eSChristoph Hellwig return 24; 1392650d71eSChristoph Hellwig } 1402650d71eSChristoph Hellwig 1412650d71eSChristoph Hellwig static int iscsi_get_pr_transport_id( 142c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 143c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg, 144c66ac9dbSNicholas Bellinger int *format_code, 145c66ac9dbSNicholas Bellinger unsigned char *buf) 146c66ac9dbSNicholas Bellinger { 147c66ac9dbSNicholas Bellinger u32 off = 4, padding = 0; 148c66ac9dbSNicholas Bellinger u16 len = 0; 149c66ac9dbSNicholas Bellinger 150c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->nacl_sess_lock); 151c66ac9dbSNicholas Bellinger /* 152c66ac9dbSNicholas Bellinger * From spc4r17 Section 7.5.4.6: TransportID for initiator 153c66ac9dbSNicholas Bellinger * ports using SCSI over iSCSI. 154c66ac9dbSNicholas Bellinger * 155c66ac9dbSNicholas Bellinger * The null-terminated, null-padded (see 4.4.2) ISCSI NAME field 156c66ac9dbSNicholas Bellinger * shall contain the iSCSI name of an iSCSI initiator node (see 157c66ac9dbSNicholas Bellinger * RFC 3720). The first ISCSI NAME field byte containing an ASCII 158c66ac9dbSNicholas Bellinger * null character terminates the ISCSI NAME field without regard for 159c66ac9dbSNicholas Bellinger * the specified length of the iSCSI TransportID or the contents of 160c66ac9dbSNicholas Bellinger * the ADDITIONAL LENGTH field. 161c66ac9dbSNicholas Bellinger */ 162c66ac9dbSNicholas Bellinger len = sprintf(&buf[off], "%s", se_nacl->initiatorname); 163c66ac9dbSNicholas Bellinger /* 164c66ac9dbSNicholas Bellinger * Add Extra byte for NULL terminator 165c66ac9dbSNicholas Bellinger */ 166c66ac9dbSNicholas Bellinger len++; 167c66ac9dbSNicholas Bellinger /* 168c66ac9dbSNicholas Bellinger * If there is ISID present with the registration and *format code == 1 169c66ac9dbSNicholas Bellinger * 1, use iSCSI Initiator port TransportID format. 170c66ac9dbSNicholas Bellinger * 171c66ac9dbSNicholas Bellinger * Otherwise use iSCSI Initiator device TransportID format that 172c66ac9dbSNicholas Bellinger * does not contain the ASCII encoded iSCSI Initiator iSID value 173c66ac9dbSNicholas Bellinger * provied by the iSCSi Initiator during the iSCSI login process. 174c66ac9dbSNicholas Bellinger */ 175c66ac9dbSNicholas Bellinger if ((*format_code == 1) && (pr_reg->isid_present_at_reg)) { 176c66ac9dbSNicholas Bellinger /* 177c66ac9dbSNicholas Bellinger * Set FORMAT CODE 01b for iSCSI Initiator port TransportID 178c66ac9dbSNicholas Bellinger * format. 179c66ac9dbSNicholas Bellinger */ 180c66ac9dbSNicholas Bellinger buf[0] |= 0x40; 181c66ac9dbSNicholas Bellinger /* 182c66ac9dbSNicholas Bellinger * From spc4r17 Section 7.5.4.6: TransportID for initiator 183c66ac9dbSNicholas Bellinger * ports using SCSI over iSCSI. Table 390 184c66ac9dbSNicholas Bellinger * 185c66ac9dbSNicholas Bellinger * The SEPARATOR field shall contain the five ASCII 186c66ac9dbSNicholas Bellinger * characters ",i,0x". 187c66ac9dbSNicholas Bellinger * 188c66ac9dbSNicholas Bellinger * The null-terminated, null-padded ISCSI INITIATOR SESSION ID 189c66ac9dbSNicholas Bellinger * field shall contain the iSCSI initiator session identifier 190c66ac9dbSNicholas Bellinger * (see RFC 3720) in the form of ASCII characters that are the 191c66ac9dbSNicholas Bellinger * hexadecimal digits converted from the binary iSCSI initiator 192c66ac9dbSNicholas Bellinger * session identifier value. The first ISCSI INITIATOR SESSION 193c66ac9dbSNicholas Bellinger * ID field byte containing an ASCII null character 194c66ac9dbSNicholas Bellinger */ 195c66ac9dbSNicholas Bellinger buf[off+len] = 0x2c; off++; /* ASCII Character: "," */ 196c66ac9dbSNicholas Bellinger buf[off+len] = 0x69; off++; /* ASCII Character: "i" */ 197c66ac9dbSNicholas Bellinger buf[off+len] = 0x2c; off++; /* ASCII Character: "," */ 198c66ac9dbSNicholas Bellinger buf[off+len] = 0x30; off++; /* ASCII Character: "0" */ 199c66ac9dbSNicholas Bellinger buf[off+len] = 0x78; off++; /* ASCII Character: "x" */ 200c66ac9dbSNicholas Bellinger len += 5; 201c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[0]; off++; 202c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[1]; off++; 203c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[2]; off++; 204c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[3]; off++; 205c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[4]; off++; 206c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[5]; off++; 207c66ac9dbSNicholas Bellinger buf[off+len] = '\0'; off++; 208c66ac9dbSNicholas Bellinger len += 7; 209c66ac9dbSNicholas Bellinger } 210c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->nacl_sess_lock); 211c66ac9dbSNicholas Bellinger /* 212c66ac9dbSNicholas Bellinger * The ADDITIONAL LENGTH field specifies the number of bytes that follow 213c66ac9dbSNicholas Bellinger * in the TransportID. The additional length shall be at least 20 and 214c66ac9dbSNicholas Bellinger * shall be a multiple of four. 215c66ac9dbSNicholas Bellinger */ 216c66ac9dbSNicholas Bellinger padding = ((-len) & 3); 217c66ac9dbSNicholas Bellinger if (padding != 0) 218c66ac9dbSNicholas Bellinger len += padding; 219c66ac9dbSNicholas Bellinger 220a85d667eSBart Van Assche put_unaligned_be16(len, &buf[2]); 221c66ac9dbSNicholas Bellinger /* 222c66ac9dbSNicholas Bellinger * Increment value for total payload + header length for 223c66ac9dbSNicholas Bellinger * full status descriptor 224c66ac9dbSNicholas Bellinger */ 225c66ac9dbSNicholas Bellinger len += 4; 226c66ac9dbSNicholas Bellinger 227c66ac9dbSNicholas Bellinger return len; 228c66ac9dbSNicholas Bellinger } 229c66ac9dbSNicholas Bellinger 2302650d71eSChristoph Hellwig static int iscsi_get_pr_transport_id_len( 231c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 232c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg, 233c66ac9dbSNicholas Bellinger int *format_code) 234c66ac9dbSNicholas Bellinger { 235c66ac9dbSNicholas Bellinger u32 len = 0, padding = 0; 236c66ac9dbSNicholas Bellinger 237c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->nacl_sess_lock); 238c66ac9dbSNicholas Bellinger len = strlen(se_nacl->initiatorname); 239c66ac9dbSNicholas Bellinger /* 240c66ac9dbSNicholas Bellinger * Add extra byte for NULL terminator 241c66ac9dbSNicholas Bellinger */ 242c66ac9dbSNicholas Bellinger len++; 243c66ac9dbSNicholas Bellinger /* 244c66ac9dbSNicholas Bellinger * If there is ISID present with the registration, use format code: 245c66ac9dbSNicholas Bellinger * 01b: iSCSI Initiator port TransportID format 246c66ac9dbSNicholas Bellinger * 247c66ac9dbSNicholas Bellinger * If there is not an active iSCSI session, use format code: 248c66ac9dbSNicholas Bellinger * 00b: iSCSI Initiator device TransportID format 249c66ac9dbSNicholas Bellinger */ 250c66ac9dbSNicholas Bellinger if (pr_reg->isid_present_at_reg) { 25135d1efe8SMasanari Iida len += 5; /* For ",i,0x" ASCII separator */ 252c66ac9dbSNicholas Bellinger len += 7; /* For iSCSI Initiator Session ID + Null terminator */ 253c66ac9dbSNicholas Bellinger *format_code = 1; 254c66ac9dbSNicholas Bellinger } else 255c66ac9dbSNicholas Bellinger *format_code = 0; 256c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->nacl_sess_lock); 257c66ac9dbSNicholas Bellinger /* 258c66ac9dbSNicholas Bellinger * The ADDITIONAL LENGTH field specifies the number of bytes that follow 259c66ac9dbSNicholas Bellinger * in the TransportID. The additional length shall be at least 20 and 260c66ac9dbSNicholas Bellinger * shall be a multiple of four. 261c66ac9dbSNicholas Bellinger */ 262c66ac9dbSNicholas Bellinger padding = ((-len) & 3); 263c66ac9dbSNicholas Bellinger if (padding != 0) 264c66ac9dbSNicholas Bellinger len += padding; 265c66ac9dbSNicholas Bellinger /* 266c66ac9dbSNicholas Bellinger * Increment value for total payload + header length for 267c66ac9dbSNicholas Bellinger * full status descriptor 268c66ac9dbSNicholas Bellinger */ 269c66ac9dbSNicholas Bellinger len += 4; 270c66ac9dbSNicholas Bellinger 271c66ac9dbSNicholas Bellinger return len; 272c66ac9dbSNicholas Bellinger } 273c66ac9dbSNicholas Bellinger 2742650d71eSChristoph Hellwig static char *iscsi_parse_pr_out_transport_id( 275c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg, 276094bb5d7SRasmus Villemoes char *buf, 277c66ac9dbSNicholas Bellinger u32 *out_tid_len, 278c66ac9dbSNicholas Bellinger char **port_nexus_ptr) 279c66ac9dbSNicholas Bellinger { 280c66ac9dbSNicholas Bellinger char *p; 281c66ac9dbSNicholas Bellinger u32 tid_len, padding; 282c66ac9dbSNicholas Bellinger int i; 283c66ac9dbSNicholas Bellinger u16 add_len; 284c66ac9dbSNicholas Bellinger u8 format_code = (buf[0] & 0xc0); 285c66ac9dbSNicholas Bellinger /* 286c66ac9dbSNicholas Bellinger * Check for FORMAT CODE 00b or 01b from spc4r17, section 7.5.4.6: 287c66ac9dbSNicholas Bellinger * 288c66ac9dbSNicholas Bellinger * TransportID for initiator ports using SCSI over iSCSI, 289c66ac9dbSNicholas Bellinger * from Table 388 -- iSCSI TransportID formats. 290c66ac9dbSNicholas Bellinger * 291c66ac9dbSNicholas Bellinger * 00b Initiator port is identified using the world wide unique 292c66ac9dbSNicholas Bellinger * SCSI device name of the iSCSI initiator 293c66ac9dbSNicholas Bellinger * device containing the initiator port (see table 389). 294c66ac9dbSNicholas Bellinger * 01b Initiator port is identified using the world wide unique 295c66ac9dbSNicholas Bellinger * initiator port identifier (see table 390).10b to 11b 296c66ac9dbSNicholas Bellinger * Reserved 297c66ac9dbSNicholas Bellinger */ 298c66ac9dbSNicholas Bellinger if ((format_code != 0x00) && (format_code != 0x40)) { 2996708bb27SAndy Grover pr_err("Illegal format code: 0x%02x for iSCSI" 300c66ac9dbSNicholas Bellinger " Initiator Transport ID\n", format_code); 301c66ac9dbSNicholas Bellinger return NULL; 302c66ac9dbSNicholas Bellinger } 303c66ac9dbSNicholas Bellinger /* 304c66ac9dbSNicholas Bellinger * If the caller wants the TransportID Length, we set that value for the 305c66ac9dbSNicholas Bellinger * entire iSCSI Tarnsport ID now. 306c66ac9dbSNicholas Bellinger */ 30768edbce4SJoern Engel if (out_tid_len) { 30868edbce4SJoern Engel /* The shift works thanks to integer promotion rules */ 309a85d667eSBart Van Assche add_len = get_unaligned_be16(&buf[2]); 310c66ac9dbSNicholas Bellinger 3118359cf43SJörn Engel tid_len = strlen(&buf[4]); 312c66ac9dbSNicholas Bellinger tid_len += 4; /* Add four bytes for iSCSI Transport ID header */ 313c66ac9dbSNicholas Bellinger tid_len += 1; /* Add one byte for NULL terminator */ 314c66ac9dbSNicholas Bellinger padding = ((-tid_len) & 3); 315c66ac9dbSNicholas Bellinger if (padding != 0) 316c66ac9dbSNicholas Bellinger tid_len += padding; 317c66ac9dbSNicholas Bellinger 318c66ac9dbSNicholas Bellinger if ((add_len + 4) != tid_len) { 3196708bb27SAndy Grover pr_debug("LIO-Target Extracted add_len: %hu " 320c66ac9dbSNicholas Bellinger "does not match calculated tid_len: %u," 321c66ac9dbSNicholas Bellinger " using tid_len instead\n", add_len+4, tid_len); 322c66ac9dbSNicholas Bellinger *out_tid_len = tid_len; 323c66ac9dbSNicholas Bellinger } else 324c66ac9dbSNicholas Bellinger *out_tid_len = (add_len + 4); 325c66ac9dbSNicholas Bellinger } 326c66ac9dbSNicholas Bellinger /* 32735d1efe8SMasanari Iida * Check for ',i,0x' separator between iSCSI Name and iSCSI Initiator 328c66ac9dbSNicholas Bellinger * Session ID as defined in Table 390 - iSCSI initiator port TransportID 329c66ac9dbSNicholas Bellinger * format. 330c66ac9dbSNicholas Bellinger */ 331c66ac9dbSNicholas Bellinger if (format_code == 0x40) { 3328359cf43SJörn Engel p = strstr(&buf[4], ",i,0x"); 3336708bb27SAndy Grover if (!p) { 33435d1efe8SMasanari Iida pr_err("Unable to locate \",i,0x\" separator" 335c66ac9dbSNicholas Bellinger " for Initiator port identifier: %s\n", 3368359cf43SJörn Engel &buf[4]); 337c66ac9dbSNicholas Bellinger return NULL; 338c66ac9dbSNicholas Bellinger } 339c66ac9dbSNicholas Bellinger *p = '\0'; /* Terminate iSCSI Name */ 34035d1efe8SMasanari Iida p += 5; /* Skip over ",i,0x" separator */ 341c66ac9dbSNicholas Bellinger 342c66ac9dbSNicholas Bellinger *port_nexus_ptr = p; 343c66ac9dbSNicholas Bellinger /* 344c66ac9dbSNicholas Bellinger * Go ahead and do the lower case conversion of the received 345c66ac9dbSNicholas Bellinger * 12 ASCII characters representing the ISID in the TransportID 34625985edcSLucas De Marchi * for comparison against the running iSCSI session's ISID from 347c66ac9dbSNicholas Bellinger * iscsi_target.c:lio_sess_get_initiator_sid() 348c66ac9dbSNicholas Bellinger */ 349c66ac9dbSNicholas Bellinger for (i = 0; i < 12; i++) { 350c66ac9dbSNicholas Bellinger if (isdigit(*p)) { 351c66ac9dbSNicholas Bellinger p++; 352c66ac9dbSNicholas Bellinger continue; 353c66ac9dbSNicholas Bellinger } 354c66ac9dbSNicholas Bellinger *p = tolower(*p); 355c66ac9dbSNicholas Bellinger p++; 356c66ac9dbSNicholas Bellinger } 357c66ac9dbSNicholas Bellinger } 358c66ac9dbSNicholas Bellinger 359094bb5d7SRasmus Villemoes return &buf[4]; 360c66ac9dbSNicholas Bellinger } 3612650d71eSChristoph Hellwig 3622650d71eSChristoph Hellwig int target_get_pr_transport_id_len(struct se_node_acl *nacl, 3632650d71eSChristoph Hellwig struct t10_pr_registration *pr_reg, int *format_code) 3642650d71eSChristoph Hellwig { 3652650d71eSChristoph Hellwig switch (nacl->se_tpg->proto_id) { 3662650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 3672650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 3682650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 3692650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 3702650d71eSChristoph Hellwig break; 3712650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 3722650d71eSChristoph Hellwig return iscsi_get_pr_transport_id_len(nacl, pr_reg, format_code); 3732650d71eSChristoph Hellwig default: 3742650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", nacl->se_tpg->proto_id); 3752650d71eSChristoph Hellwig return -EINVAL; 3762650d71eSChristoph Hellwig } 3772650d71eSChristoph Hellwig 3782650d71eSChristoph Hellwig /* 3792650d71eSChristoph Hellwig * Most transports use a fixed length 24 byte identifier. 3802650d71eSChristoph Hellwig */ 3812650d71eSChristoph Hellwig *format_code = 0; 3822650d71eSChristoph Hellwig return 24; 3832650d71eSChristoph Hellwig } 3842650d71eSChristoph Hellwig 3852650d71eSChristoph Hellwig int target_get_pr_transport_id(struct se_node_acl *nacl, 3862650d71eSChristoph Hellwig struct t10_pr_registration *pr_reg, int *format_code, 3872650d71eSChristoph Hellwig unsigned char *buf) 3882650d71eSChristoph Hellwig { 3892650d71eSChristoph Hellwig switch (nacl->se_tpg->proto_id) { 3902650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 3912650d71eSChristoph Hellwig return sas_get_pr_transport_id(nacl, format_code, buf); 3922650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 3932650d71eSChristoph Hellwig return sbp_get_pr_transport_id(nacl, format_code, buf); 3942650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 3952650d71eSChristoph Hellwig return srp_get_pr_transport_id(nacl, format_code, buf); 3962650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 3972650d71eSChristoph Hellwig return fc_get_pr_transport_id(nacl, format_code, buf); 3982650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 3992650d71eSChristoph Hellwig return iscsi_get_pr_transport_id(nacl, pr_reg, format_code, 4002650d71eSChristoph Hellwig buf); 4012650d71eSChristoph Hellwig default: 4022650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", nacl->se_tpg->proto_id); 4032650d71eSChristoph Hellwig return -EINVAL; 4042650d71eSChristoph Hellwig } 4052650d71eSChristoph Hellwig } 4062650d71eSChristoph Hellwig 4072650d71eSChristoph Hellwig const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg, 408094bb5d7SRasmus Villemoes char *buf, u32 *out_tid_len, char **port_nexus_ptr) 4092650d71eSChristoph Hellwig { 4102650d71eSChristoph Hellwig u32 offset; 4112650d71eSChristoph Hellwig 4122650d71eSChristoph Hellwig switch (tpg->proto_id) { 4132650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 4142650d71eSChristoph Hellwig /* 4152650d71eSChristoph Hellwig * Assume the FORMAT CODE 00b from spc4r17, 7.5.4.7 TransportID 4162650d71eSChristoph Hellwig * for initiator ports using SCSI over SAS Serial SCSI Protocol. 4172650d71eSChristoph Hellwig */ 4182650d71eSChristoph Hellwig offset = 4; 4192650d71eSChristoph Hellwig break; 4202650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 4212650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 4222650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 4232650d71eSChristoph Hellwig offset = 8; 4242650d71eSChristoph Hellwig break; 4252650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 4262650d71eSChristoph Hellwig return iscsi_parse_pr_out_transport_id(tpg, buf, out_tid_len, 4272650d71eSChristoph Hellwig port_nexus_ptr); 4282650d71eSChristoph Hellwig default: 4292650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", tpg->proto_id); 4302650d71eSChristoph Hellwig return NULL; 4312650d71eSChristoph Hellwig } 4322650d71eSChristoph Hellwig 4332650d71eSChristoph Hellwig *port_nexus_ptr = NULL; 4342650d71eSChristoph Hellwig *out_tid_len = 24; 4352650d71eSChristoph Hellwig return buf + offset; 4362650d71eSChristoph Hellwig } 437