11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2c66ac9dbSNicholas Bellinger /******************************************************************************* 3c66ac9dbSNicholas Bellinger * Filename: target_core_fabric_lib.c 4c66ac9dbSNicholas Bellinger * 5c66ac9dbSNicholas Bellinger * This file contains generic high level protocol identifier and PR 6c66ac9dbSNicholas Bellinger * handlers for TCM fabric modules 7c66ac9dbSNicholas Bellinger * 84c76251eSNicholas Bellinger * (c) Copyright 2010-2013 Datera, Inc. 9c66ac9dbSNicholas Bellinger * 10c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@linux-iscsi.org> 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger ******************************************************************************/ 13c66ac9dbSNicholas Bellinger 142650d71eSChristoph Hellwig /* 152650d71eSChristoph Hellwig * See SPC4, section 7.5 "Protocol specific parameters" for details 162650d71eSChristoph Hellwig * on the formats implemented in this file. 172650d71eSChristoph Hellwig */ 182650d71eSChristoph Hellwig 1911650b85SAndy Shevchenko #include <linux/kernel.h> 20c66ac9dbSNicholas Bellinger #include <linux/string.h> 21c66ac9dbSNicholas Bellinger #include <linux/ctype.h> 22c66ac9dbSNicholas Bellinger #include <linux/spinlock.h> 23c53181afSPaul Gortmaker #include <linux/export.h> 24a85d667eSBart Van Assche #include <asm/unaligned.h> 25c66ac9dbSNicholas Bellinger 266546a02aSStephen Rothwell #include <scsi/scsi_proto.h> 276546a02aSStephen Rothwell 28c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 29c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 30c66ac9dbSNicholas Bellinger 31e26d99aeSChristoph Hellwig #include "target_core_internal.h" 32c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 33c66ac9dbSNicholas Bellinger 34c66ac9dbSNicholas Bellinger 352650d71eSChristoph Hellwig static int sas_get_pr_transport_id( 362650d71eSChristoph Hellwig struct se_node_acl *nacl, 37c66ac9dbSNicholas Bellinger int *format_code, 38c66ac9dbSNicholas Bellinger unsigned char *buf) 39c66ac9dbSNicholas Bellinger { 408c35ad20SMimi Zohar int ret; 4111650b85SAndy Shevchenko 422650d71eSChristoph Hellwig /* Skip over 'naa. prefix */ 432650d71eSChristoph Hellwig ret = hex2bin(&buf[4], &nacl->initiatorname[4], 8); 442650d71eSChristoph Hellwig if (ret) { 452650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 462650d71eSChristoph Hellwig return ret; 472650d71eSChristoph Hellwig } 48c66ac9dbSNicholas Bellinger 49c66ac9dbSNicholas Bellinger return 24; 50c66ac9dbSNicholas Bellinger } 51c66ac9dbSNicholas Bellinger 522650d71eSChristoph Hellwig static int fc_get_pr_transport_id( 53c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 54c66ac9dbSNicholas Bellinger int *format_code, 55c66ac9dbSNicholas Bellinger unsigned char *buf) 56c66ac9dbSNicholas Bellinger { 5711650b85SAndy Shevchenko unsigned char *ptr; 588c35ad20SMimi Zohar int i, ret; 59c66ac9dbSNicholas Bellinger u32 off = 8; 608c35ad20SMimi Zohar 61c66ac9dbSNicholas Bellinger /* 62c66ac9dbSNicholas Bellinger * We convert the ASCII formatted N Port name into a binary 63c66ac9dbSNicholas Bellinger * encoded TransportID. 64c66ac9dbSNicholas Bellinger */ 65c66ac9dbSNicholas Bellinger ptr = &se_nacl->initiatorname[0]; 668fed04ebSBodo Stroesser for (i = 0; i < 23; ) { 676708bb27SAndy Grover if (!strncmp(&ptr[i], ":", 1)) { 68c66ac9dbSNicholas Bellinger i++; 69c66ac9dbSNicholas Bellinger continue; 70c66ac9dbSNicholas Bellinger } 718c35ad20SMimi Zohar ret = hex2bin(&buf[off++], &ptr[i], 1); 722650d71eSChristoph Hellwig if (ret < 0) { 732650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 742650d71eSChristoph Hellwig return ret; 752650d71eSChristoph Hellwig } 76c66ac9dbSNicholas Bellinger i += 2; 77c66ac9dbSNicholas Bellinger } 78c66ac9dbSNicholas Bellinger /* 79c66ac9dbSNicholas Bellinger * The FC Transport ID is a hardcoded 24-byte length 80c66ac9dbSNicholas Bellinger */ 81c66ac9dbSNicholas Bellinger return 24; 82c66ac9dbSNicholas Bellinger } 83c66ac9dbSNicholas Bellinger 842650d71eSChristoph Hellwig static int sbp_get_pr_transport_id( 852650d71eSChristoph Hellwig struct se_node_acl *nacl, 862650d71eSChristoph Hellwig int *format_code, 872650d71eSChristoph Hellwig unsigned char *buf) 88c66ac9dbSNicholas Bellinger { 892650d71eSChristoph Hellwig int ret; 90c66ac9dbSNicholas Bellinger 912650d71eSChristoph Hellwig ret = hex2bin(&buf[8], nacl->initiatorname, 8); 922650d71eSChristoph Hellwig if (ret) { 932650d71eSChristoph Hellwig pr_debug("%s: invalid hex string\n", __func__); 942650d71eSChristoph Hellwig return ret; 95c66ac9dbSNicholas Bellinger } 96c66ac9dbSNicholas Bellinger 972650d71eSChristoph Hellwig return 24; 982650d71eSChristoph Hellwig } 99c66ac9dbSNicholas Bellinger 1002650d71eSChristoph Hellwig static int srp_get_pr_transport_id( 1012650d71eSChristoph Hellwig struct se_node_acl *nacl, 1022650d71eSChristoph Hellwig int *format_code, 1032650d71eSChristoph Hellwig unsigned char *buf) 104c66ac9dbSNicholas Bellinger { 1052650d71eSChristoph Hellwig const char *p; 1062650d71eSChristoph Hellwig unsigned len, count, leading_zero_bytes; 1072650d71eSChristoph Hellwig int rc; 108c66ac9dbSNicholas Bellinger 1092650d71eSChristoph Hellwig p = nacl->initiatorname; 1102650d71eSChristoph Hellwig if (strncasecmp(p, "0x", 2) == 0) 1112650d71eSChristoph Hellwig p += 2; 1122650d71eSChristoph Hellwig len = strlen(p); 1132650d71eSChristoph Hellwig if (len % 2) 1142650d71eSChristoph Hellwig return -EINVAL; 1152650d71eSChristoph Hellwig 1162650d71eSChristoph Hellwig count = min(len / 2, 16U); 1172650d71eSChristoph Hellwig leading_zero_bytes = 16 - count; 1182650d71eSChristoph Hellwig memset(buf + 8, 0, leading_zero_bytes); 1192650d71eSChristoph Hellwig rc = hex2bin(buf + 8 + leading_zero_bytes, p, count); 1202650d71eSChristoph Hellwig if (rc < 0) { 121c941e0d1SBart Van Assche pr_debug("hex2bin failed for %s: %d\n", p, rc); 1222650d71eSChristoph Hellwig return rc; 1232650d71eSChristoph Hellwig } 1242650d71eSChristoph Hellwig 1252650d71eSChristoph Hellwig return 24; 1262650d71eSChristoph Hellwig } 1272650d71eSChristoph Hellwig 1282650d71eSChristoph Hellwig static int iscsi_get_pr_transport_id( 129c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 130c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg, 131c66ac9dbSNicholas Bellinger int *format_code, 132c66ac9dbSNicholas Bellinger unsigned char *buf) 133c66ac9dbSNicholas Bellinger { 134c66ac9dbSNicholas Bellinger u32 off = 4, padding = 0; 135c66ac9dbSNicholas Bellinger u16 len = 0; 136c66ac9dbSNicholas Bellinger 137c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->nacl_sess_lock); 138c66ac9dbSNicholas Bellinger /* 139c66ac9dbSNicholas Bellinger * From spc4r17 Section 7.5.4.6: TransportID for initiator 140c66ac9dbSNicholas Bellinger * ports using SCSI over iSCSI. 141c66ac9dbSNicholas Bellinger * 142c66ac9dbSNicholas Bellinger * The null-terminated, null-padded (see 4.4.2) ISCSI NAME field 143c66ac9dbSNicholas Bellinger * shall contain the iSCSI name of an iSCSI initiator node (see 144c66ac9dbSNicholas Bellinger * RFC 3720). The first ISCSI NAME field byte containing an ASCII 145c66ac9dbSNicholas Bellinger * null character terminates the ISCSI NAME field without regard for 146c66ac9dbSNicholas Bellinger * the specified length of the iSCSI TransportID or the contents of 147c66ac9dbSNicholas Bellinger * the ADDITIONAL LENGTH field. 148c66ac9dbSNicholas Bellinger */ 149c66ac9dbSNicholas Bellinger len = sprintf(&buf[off], "%s", se_nacl->initiatorname); 150c66ac9dbSNicholas Bellinger /* 151c66ac9dbSNicholas Bellinger * Add Extra byte for NULL terminator 152c66ac9dbSNicholas Bellinger */ 153c66ac9dbSNicholas Bellinger len++; 154c66ac9dbSNicholas Bellinger /* 155c66ac9dbSNicholas Bellinger * If there is ISID present with the registration and *format code == 1 156c66ac9dbSNicholas Bellinger * 1, use iSCSI Initiator port TransportID format. 157c66ac9dbSNicholas Bellinger * 158c66ac9dbSNicholas Bellinger * Otherwise use iSCSI Initiator device TransportID format that 159c66ac9dbSNicholas Bellinger * does not contain the ASCII encoded iSCSI Initiator iSID value 160c66ac9dbSNicholas Bellinger * provied by the iSCSi Initiator during the iSCSI login process. 161c66ac9dbSNicholas Bellinger */ 162c66ac9dbSNicholas Bellinger if ((*format_code == 1) && (pr_reg->isid_present_at_reg)) { 163c66ac9dbSNicholas Bellinger /* 164c66ac9dbSNicholas Bellinger * Set FORMAT CODE 01b for iSCSI Initiator port TransportID 165c66ac9dbSNicholas Bellinger * format. 166c66ac9dbSNicholas Bellinger */ 167c66ac9dbSNicholas Bellinger buf[0] |= 0x40; 168c66ac9dbSNicholas Bellinger /* 169c66ac9dbSNicholas Bellinger * From spc4r17 Section 7.5.4.6: TransportID for initiator 170c66ac9dbSNicholas Bellinger * ports using SCSI over iSCSI. Table 390 171c66ac9dbSNicholas Bellinger * 172c66ac9dbSNicholas Bellinger * The SEPARATOR field shall contain the five ASCII 173c66ac9dbSNicholas Bellinger * characters ",i,0x". 174c66ac9dbSNicholas Bellinger * 175c66ac9dbSNicholas Bellinger * The null-terminated, null-padded ISCSI INITIATOR SESSION ID 176c66ac9dbSNicholas Bellinger * field shall contain the iSCSI initiator session identifier 177c66ac9dbSNicholas Bellinger * (see RFC 3720) in the form of ASCII characters that are the 178c66ac9dbSNicholas Bellinger * hexadecimal digits converted from the binary iSCSI initiator 179c66ac9dbSNicholas Bellinger * session identifier value. The first ISCSI INITIATOR SESSION 180c66ac9dbSNicholas Bellinger * ID field byte containing an ASCII null character 181c66ac9dbSNicholas Bellinger */ 182c66ac9dbSNicholas Bellinger buf[off+len] = 0x2c; off++; /* ASCII Character: "," */ 183c66ac9dbSNicholas Bellinger buf[off+len] = 0x69; off++; /* ASCII Character: "i" */ 184c66ac9dbSNicholas Bellinger buf[off+len] = 0x2c; off++; /* ASCII Character: "," */ 185c66ac9dbSNicholas Bellinger buf[off+len] = 0x30; off++; /* ASCII Character: "0" */ 186c66ac9dbSNicholas Bellinger buf[off+len] = 0x78; off++; /* ASCII Character: "x" */ 187c66ac9dbSNicholas Bellinger len += 5; 188c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[0]; off++; 189c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[1]; off++; 190c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[2]; off++; 191c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[3]; off++; 192c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[4]; off++; 193c66ac9dbSNicholas Bellinger buf[off+len] = pr_reg->pr_reg_isid[5]; off++; 194c66ac9dbSNicholas Bellinger buf[off+len] = '\0'; off++; 195c66ac9dbSNicholas Bellinger len += 7; 196c66ac9dbSNicholas Bellinger } 197c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->nacl_sess_lock); 198c66ac9dbSNicholas Bellinger /* 199c66ac9dbSNicholas Bellinger * The ADDITIONAL LENGTH field specifies the number of bytes that follow 200c66ac9dbSNicholas Bellinger * in the TransportID. The additional length shall be at least 20 and 201c66ac9dbSNicholas Bellinger * shall be a multiple of four. 202c66ac9dbSNicholas Bellinger */ 203c66ac9dbSNicholas Bellinger padding = ((-len) & 3); 204c66ac9dbSNicholas Bellinger if (padding != 0) 205c66ac9dbSNicholas Bellinger len += padding; 206c66ac9dbSNicholas Bellinger 207a85d667eSBart Van Assche put_unaligned_be16(len, &buf[2]); 208c66ac9dbSNicholas Bellinger /* 209c66ac9dbSNicholas Bellinger * Increment value for total payload + header length for 210c66ac9dbSNicholas Bellinger * full status descriptor 211c66ac9dbSNicholas Bellinger */ 212c66ac9dbSNicholas Bellinger len += 4; 213c66ac9dbSNicholas Bellinger 214c66ac9dbSNicholas Bellinger return len; 215c66ac9dbSNicholas Bellinger } 216c66ac9dbSNicholas Bellinger 2172650d71eSChristoph Hellwig static int iscsi_get_pr_transport_id_len( 218c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl, 219c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg, 220c66ac9dbSNicholas Bellinger int *format_code) 221c66ac9dbSNicholas Bellinger { 222c66ac9dbSNicholas Bellinger u32 len = 0, padding = 0; 223c66ac9dbSNicholas Bellinger 224c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->nacl_sess_lock); 225c66ac9dbSNicholas Bellinger len = strlen(se_nacl->initiatorname); 226c66ac9dbSNicholas Bellinger /* 227c66ac9dbSNicholas Bellinger * Add extra byte for NULL terminator 228c66ac9dbSNicholas Bellinger */ 229c66ac9dbSNicholas Bellinger len++; 230c66ac9dbSNicholas Bellinger /* 231c66ac9dbSNicholas Bellinger * If there is ISID present with the registration, use format code: 232c66ac9dbSNicholas Bellinger * 01b: iSCSI Initiator port TransportID format 233c66ac9dbSNicholas Bellinger * 234c66ac9dbSNicholas Bellinger * If there is not an active iSCSI session, use format code: 235c66ac9dbSNicholas Bellinger * 00b: iSCSI Initiator device TransportID format 236c66ac9dbSNicholas Bellinger */ 237c66ac9dbSNicholas Bellinger if (pr_reg->isid_present_at_reg) { 23835d1efe8SMasanari Iida len += 5; /* For ",i,0x" ASCII separator */ 239c66ac9dbSNicholas Bellinger len += 7; /* For iSCSI Initiator Session ID + Null terminator */ 240c66ac9dbSNicholas Bellinger *format_code = 1; 241c66ac9dbSNicholas Bellinger } else 242c66ac9dbSNicholas Bellinger *format_code = 0; 243c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->nacl_sess_lock); 244c66ac9dbSNicholas Bellinger /* 245c66ac9dbSNicholas Bellinger * The ADDITIONAL LENGTH field specifies the number of bytes that follow 246c66ac9dbSNicholas Bellinger * in the TransportID. The additional length shall be at least 20 and 247c66ac9dbSNicholas Bellinger * shall be a multiple of four. 248c66ac9dbSNicholas Bellinger */ 249c66ac9dbSNicholas Bellinger padding = ((-len) & 3); 250c66ac9dbSNicholas Bellinger if (padding != 0) 251c66ac9dbSNicholas Bellinger len += padding; 252c66ac9dbSNicholas Bellinger /* 253c66ac9dbSNicholas Bellinger * Increment value for total payload + header length for 254c66ac9dbSNicholas Bellinger * full status descriptor 255c66ac9dbSNicholas Bellinger */ 256c66ac9dbSNicholas Bellinger len += 4; 257c66ac9dbSNicholas Bellinger 258c66ac9dbSNicholas Bellinger return len; 259c66ac9dbSNicholas Bellinger } 260c66ac9dbSNicholas Bellinger 2612650d71eSChristoph Hellwig static char *iscsi_parse_pr_out_transport_id( 262c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg, 263094bb5d7SRasmus Villemoes char *buf, 264c66ac9dbSNicholas Bellinger u32 *out_tid_len, 265c66ac9dbSNicholas Bellinger char **port_nexus_ptr) 266c66ac9dbSNicholas Bellinger { 267c66ac9dbSNicholas Bellinger char *p; 268c66ac9dbSNicholas Bellinger u32 tid_len, padding; 269c66ac9dbSNicholas Bellinger int i; 270c66ac9dbSNicholas Bellinger u16 add_len; 271c66ac9dbSNicholas Bellinger u8 format_code = (buf[0] & 0xc0); 272c66ac9dbSNicholas Bellinger /* 273c66ac9dbSNicholas Bellinger * Check for FORMAT CODE 00b or 01b from spc4r17, section 7.5.4.6: 274c66ac9dbSNicholas Bellinger * 275c66ac9dbSNicholas Bellinger * TransportID for initiator ports using SCSI over iSCSI, 276c66ac9dbSNicholas Bellinger * from Table 388 -- iSCSI TransportID formats. 277c66ac9dbSNicholas Bellinger * 278c66ac9dbSNicholas Bellinger * 00b Initiator port is identified using the world wide unique 279c66ac9dbSNicholas Bellinger * SCSI device name of the iSCSI initiator 280c66ac9dbSNicholas Bellinger * device containing the initiator port (see table 389). 281c66ac9dbSNicholas Bellinger * 01b Initiator port is identified using the world wide unique 282c66ac9dbSNicholas Bellinger * initiator port identifier (see table 390).10b to 11b 283c66ac9dbSNicholas Bellinger * Reserved 284c66ac9dbSNicholas Bellinger */ 285c66ac9dbSNicholas Bellinger if ((format_code != 0x00) && (format_code != 0x40)) { 2866708bb27SAndy Grover pr_err("Illegal format code: 0x%02x for iSCSI" 287c66ac9dbSNicholas Bellinger " Initiator Transport ID\n", format_code); 288c66ac9dbSNicholas Bellinger return NULL; 289c66ac9dbSNicholas Bellinger } 290c66ac9dbSNicholas Bellinger /* 291c66ac9dbSNicholas Bellinger * If the caller wants the TransportID Length, we set that value for the 292c66ac9dbSNicholas Bellinger * entire iSCSI Tarnsport ID now. 293c66ac9dbSNicholas Bellinger */ 29468edbce4SJoern Engel if (out_tid_len) { 29568edbce4SJoern Engel /* The shift works thanks to integer promotion rules */ 296a85d667eSBart Van Assche add_len = get_unaligned_be16(&buf[2]); 297c66ac9dbSNicholas Bellinger 2988359cf43SJörn Engel tid_len = strlen(&buf[4]); 299c66ac9dbSNicholas Bellinger tid_len += 4; /* Add four bytes for iSCSI Transport ID header */ 300c66ac9dbSNicholas Bellinger tid_len += 1; /* Add one byte for NULL terminator */ 301c66ac9dbSNicholas Bellinger padding = ((-tid_len) & 3); 302c66ac9dbSNicholas Bellinger if (padding != 0) 303c66ac9dbSNicholas Bellinger tid_len += padding; 304c66ac9dbSNicholas Bellinger 305c66ac9dbSNicholas Bellinger if ((add_len + 4) != tid_len) { 3066708bb27SAndy Grover pr_debug("LIO-Target Extracted add_len: %hu " 307c66ac9dbSNicholas Bellinger "does not match calculated tid_len: %u," 308c66ac9dbSNicholas Bellinger " using tid_len instead\n", add_len+4, tid_len); 309c66ac9dbSNicholas Bellinger *out_tid_len = tid_len; 310c66ac9dbSNicholas Bellinger } else 311c66ac9dbSNicholas Bellinger *out_tid_len = (add_len + 4); 312c66ac9dbSNicholas Bellinger } 313c66ac9dbSNicholas Bellinger /* 31435d1efe8SMasanari Iida * Check for ',i,0x' separator between iSCSI Name and iSCSI Initiator 315c66ac9dbSNicholas Bellinger * Session ID as defined in Table 390 - iSCSI initiator port TransportID 316c66ac9dbSNicholas Bellinger * format. 317c66ac9dbSNicholas Bellinger */ 318c66ac9dbSNicholas Bellinger if (format_code == 0x40) { 3198359cf43SJörn Engel p = strstr(&buf[4], ",i,0x"); 3206708bb27SAndy Grover if (!p) { 32135d1efe8SMasanari Iida pr_err("Unable to locate \",i,0x\" separator" 322c66ac9dbSNicholas Bellinger " for Initiator port identifier: %s\n", 3238359cf43SJörn Engel &buf[4]); 324c66ac9dbSNicholas Bellinger return NULL; 325c66ac9dbSNicholas Bellinger } 326c66ac9dbSNicholas Bellinger *p = '\0'; /* Terminate iSCSI Name */ 32735d1efe8SMasanari Iida p += 5; /* Skip over ",i,0x" separator */ 328c66ac9dbSNicholas Bellinger 329c66ac9dbSNicholas Bellinger *port_nexus_ptr = p; 330c66ac9dbSNicholas Bellinger /* 331c66ac9dbSNicholas Bellinger * Go ahead and do the lower case conversion of the received 332c66ac9dbSNicholas Bellinger * 12 ASCII characters representing the ISID in the TransportID 33325985edcSLucas De Marchi * for comparison against the running iSCSI session's ISID from 334c66ac9dbSNicholas Bellinger * iscsi_target.c:lio_sess_get_initiator_sid() 335c66ac9dbSNicholas Bellinger */ 336c66ac9dbSNicholas Bellinger for (i = 0; i < 12; i++) { 337c66ac9dbSNicholas Bellinger if (isdigit(*p)) { 338c66ac9dbSNicholas Bellinger p++; 339c66ac9dbSNicholas Bellinger continue; 340c66ac9dbSNicholas Bellinger } 341c66ac9dbSNicholas Bellinger *p = tolower(*p); 342c66ac9dbSNicholas Bellinger p++; 343c66ac9dbSNicholas Bellinger } 34413ef143dSBodo Stroesser } else 34513ef143dSBodo Stroesser *port_nexus_ptr = NULL; 346c66ac9dbSNicholas Bellinger 347094bb5d7SRasmus Villemoes return &buf[4]; 348c66ac9dbSNicholas Bellinger } 3492650d71eSChristoph Hellwig 3502650d71eSChristoph Hellwig int target_get_pr_transport_id_len(struct se_node_acl *nacl, 3512650d71eSChristoph Hellwig struct t10_pr_registration *pr_reg, int *format_code) 3522650d71eSChristoph Hellwig { 3532650d71eSChristoph Hellwig switch (nacl->se_tpg->proto_id) { 3542650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 3552650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 3562650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 3572650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 3582650d71eSChristoph Hellwig break; 3592650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 3602650d71eSChristoph Hellwig return iscsi_get_pr_transport_id_len(nacl, pr_reg, format_code); 3612650d71eSChristoph Hellwig default: 3622650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", nacl->se_tpg->proto_id); 3632650d71eSChristoph Hellwig return -EINVAL; 3642650d71eSChristoph Hellwig } 3652650d71eSChristoph Hellwig 3662650d71eSChristoph Hellwig /* 3672650d71eSChristoph Hellwig * Most transports use a fixed length 24 byte identifier. 3682650d71eSChristoph Hellwig */ 3692650d71eSChristoph Hellwig *format_code = 0; 3702650d71eSChristoph Hellwig return 24; 3712650d71eSChristoph Hellwig } 3722650d71eSChristoph Hellwig 3732650d71eSChristoph Hellwig int target_get_pr_transport_id(struct se_node_acl *nacl, 3742650d71eSChristoph Hellwig struct t10_pr_registration *pr_reg, int *format_code, 3752650d71eSChristoph Hellwig unsigned char *buf) 3762650d71eSChristoph Hellwig { 3772650d71eSChristoph Hellwig switch (nacl->se_tpg->proto_id) { 3782650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 3792650d71eSChristoph Hellwig return sas_get_pr_transport_id(nacl, format_code, buf); 3802650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 3812650d71eSChristoph Hellwig return sbp_get_pr_transport_id(nacl, format_code, buf); 3822650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 3832650d71eSChristoph Hellwig return srp_get_pr_transport_id(nacl, format_code, buf); 3842650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 3852650d71eSChristoph Hellwig return fc_get_pr_transport_id(nacl, format_code, buf); 3862650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 3872650d71eSChristoph Hellwig return iscsi_get_pr_transport_id(nacl, pr_reg, format_code, 3882650d71eSChristoph Hellwig buf); 3892650d71eSChristoph Hellwig default: 3902650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", nacl->se_tpg->proto_id); 3912650d71eSChristoph Hellwig return -EINVAL; 3922650d71eSChristoph Hellwig } 3932650d71eSChristoph Hellwig } 3942650d71eSChristoph Hellwig 3952650d71eSChristoph Hellwig const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg, 396094bb5d7SRasmus Villemoes char *buf, u32 *out_tid_len, char **port_nexus_ptr) 3972650d71eSChristoph Hellwig { 3982650d71eSChristoph Hellwig u32 offset; 3992650d71eSChristoph Hellwig 4002650d71eSChristoph Hellwig switch (tpg->proto_id) { 4012650d71eSChristoph Hellwig case SCSI_PROTOCOL_SAS: 4022650d71eSChristoph Hellwig /* 4032650d71eSChristoph Hellwig * Assume the FORMAT CODE 00b from spc4r17, 7.5.4.7 TransportID 4042650d71eSChristoph Hellwig * for initiator ports using SCSI over SAS Serial SCSI Protocol. 4052650d71eSChristoph Hellwig */ 4062650d71eSChristoph Hellwig offset = 4; 4072650d71eSChristoph Hellwig break; 4082650d71eSChristoph Hellwig case SCSI_PROTOCOL_SBP: 4092650d71eSChristoph Hellwig case SCSI_PROTOCOL_SRP: 4102650d71eSChristoph Hellwig case SCSI_PROTOCOL_FCP: 4112650d71eSChristoph Hellwig offset = 8; 4122650d71eSChristoph Hellwig break; 4132650d71eSChristoph Hellwig case SCSI_PROTOCOL_ISCSI: 4142650d71eSChristoph Hellwig return iscsi_parse_pr_out_transport_id(tpg, buf, out_tid_len, 4152650d71eSChristoph Hellwig port_nexus_ptr); 4162650d71eSChristoph Hellwig default: 4172650d71eSChristoph Hellwig pr_err("Unknown proto_id: 0x%02x\n", tpg->proto_id); 4182650d71eSChristoph Hellwig return NULL; 4192650d71eSChristoph Hellwig } 4202650d71eSChristoph Hellwig 4212650d71eSChristoph Hellwig *port_nexus_ptr = NULL; 4222650d71eSChristoph Hellwig *out_tid_len = 24; 4232650d71eSChristoph Hellwig return buf + offset; 4242650d71eSChristoph Hellwig } 425