Documentation/target/tcm_mod_builder.py

   1 #!/usr/bin/python
   2 # The TCM v4 multi-protocol fabric module generation script for drivers/target/$NEW_MOD
   3 #
   4 # Copyright (c) 2010 Rising Tide Systems
   5 # Copyright (c) 2010 Linux-iSCSI.org
   6 #
   7 # Author: nab@kernel.org
   8 #
   9 import os, sys
  10 import subprocess as sub
  11 import string
  12 import re
  13 import optparse
  14
  15 tcm_dir = ""
  16
  17 fabric_ops = []
  18 fabric_mod_dir = ""
  19 fabric_mod_port = ""
  20 fabric_mod_init_port = ""
  21
  22 def tcm_mod_err(msg):
  23         print msg
  24         sys.exit(1)
  25
  26 def tcm_mod_create_module_subdir(fabric_mod_dir_var):
  27
  28         if os.path.isdir(fabric_mod_dir_var) == True:
  29                 return 1
  30
  31         print "Creating fabric_mod_dir: " + fabric_mod_dir_var
  32         ret = os.mkdir(fabric_mod_dir_var)
  33         if ret:
  34                 tcm_mod_err("Unable to mkdir " + fabric_mod_dir_var)
  35
  36         return
  37
  38 def tcm_mod_build_FC_include(fabric_mod_dir_var, fabric_mod_name):
  39         global fabric_mod_port
  40         global fabric_mod_init_port
  41         buf = ""
  42
  43         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_base.h"
  44         print "Writing file: " + f
  45
  46         p = open(f, 'w');
  47         if not p:
  48                 tcm_mod_err("Unable to open file: " + f)
  49
  50         buf = "#define " + fabric_mod_name.upper() + "_VERSION  \"v0.1\"\n"
  51         buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n"
  52         buf += "\n"
  53         buf += "struct " + fabric_mod_name + "_tpg {\n"
  54         buf += "        /* FC lport target portal group tag for TCM */\n"
  55         buf += "        u16 lport_tpgt;\n"
  56         buf += "        /* Pointer back to " + fabric_mod_name + "_lport */\n"
  57         buf += "        struct " + fabric_mod_name + "_lport *lport;\n"
  58         buf += "        /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
  59         buf += "        struct se_portal_group se_tpg;\n"
  60         buf += "};\n"
  61         buf += "\n"
  62         buf += "struct " + fabric_mod_name + "_lport {\n"
  63         buf += "        /* Binary World Wide unique Port Name for FC Target Lport */\n"
  64         buf += "        u64 lport_wwpn;\n"
  65         buf += "        /* ASCII formatted WWPN for FC Target Lport */\n"
  66         buf += "        char lport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
  67         buf += "        /* Returned by " + fabric_mod_name + "_make_lport() */\n"
  68         buf += "        struct se_wwn lport_wwn;\n"
  69         buf += "};\n"
  70
  71         ret = p.write(buf)
  72         if ret:
  73                 tcm_mod_err("Unable to write f: " + f)
  74
  75         p.close()
  76
  77         fabric_mod_port = "lport"
  78         fabric_mod_init_port = "nport"
  79
  80         return
  81
  82 def tcm_mod_build_SAS_include(fabric_mod_dir_var, fabric_mod_name):
  83         global fabric_mod_port
  84         global fabric_mod_init_port
  85         buf = ""
  86
  87         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_base.h"
  88         print "Writing file: " + f
  89
  90         p = open(f, 'w');
  91         if not p:
  92                 tcm_mod_err("Unable to open file: " + f)
  93
  94         buf = "#define " + fabric_mod_name.upper() + "_VERSION  \"v0.1\"\n"
  95         buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n"
  96         buf += "\n"
  97         buf += "struct " + fabric_mod_name + "_tpg {\n"
  98         buf += "        /* SAS port target portal group tag for TCM */\n"
  99         buf += "        u16 tport_tpgt;\n"
 100         buf += "        /* Pointer back to " + fabric_mod_name + "_tport */\n"
 101         buf += "        struct " + fabric_mod_name + "_tport *tport;\n"
 102         buf += "        /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
 103         buf += "        struct se_portal_group se_tpg;\n"
 104         buf += "};\n\n"
 105         buf += "struct " + fabric_mod_name + "_tport {\n"
 106         buf += "        /* Binary World Wide unique Port Name for SAS Target port */\n"
 107         buf += "        u64 tport_wwpn;\n"
 108         buf += "        /* ASCII formatted WWPN for SAS Target port */\n"
 109         buf += "        char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
 110         buf += "        /* Returned by " + fabric_mod_name + "_make_tport() */\n"
 111         buf += "        struct se_wwn tport_wwn;\n"
 112         buf += "};\n"
 113
 114         ret = p.write(buf)
 115         if ret:
 116                 tcm_mod_err("Unable to write f: " + f)
 117
 118         p.close()
 119
 120         fabric_mod_port = "tport"
 121         fabric_mod_init_port = "iport"
 122
 123         return
 124
 125 def tcm_mod_build_iSCSI_include(fabric_mod_dir_var, fabric_mod_name):
 126         global fabric_mod_port
 127         global fabric_mod_init_port
 128         buf = ""
 129
 130         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_base.h"
 131         print "Writing file: " + f
 132
 133         p = open(f, 'w');
 134         if not p:
 135                 tcm_mod_err("Unable to open file: " + f)
 136
 137         buf = "#define " + fabric_mod_name.upper() + "_VERSION  \"v0.1\"\n"
 138         buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n"
 139         buf += "\n"
 140         buf += "struct " + fabric_mod_name + "_tpg {\n"
 141         buf += "        /* iSCSI target portal group tag for TCM */\n"
 142         buf += "        u16 tport_tpgt;\n"
 143         buf += "        /* Pointer back to " + fabric_mod_name + "_tport */\n"
 144         buf += "        struct " + fabric_mod_name + "_tport *tport;\n"
 145         buf += "        /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
 146         buf += "        struct se_portal_group se_tpg;\n"
 147         buf += "};\n\n"
 148         buf += "struct " + fabric_mod_name + "_tport {\n"
 149         buf += "        /* ASCII formatted TargetName for IQN */\n"
 150         buf += "        char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
 151         buf += "        /* Returned by " + fabric_mod_name + "_make_tport() */\n"
 152         buf += "        struct se_wwn tport_wwn;\n"
 153         buf += "};\n"
 154
 155         ret = p.write(buf)
 156         if ret:
 157                 tcm_mod_err("Unable to write f: " + f)
 158
 159         p.close()
 160
 161         fabric_mod_port = "tport"
 162         fabric_mod_init_port = "iport"
 163
 164         return
 165
 166 def tcm_mod_build_base_includes(proto_ident, fabric_mod_dir_val, fabric_mod_name):
 167
 168         if proto_ident == "FC":
 169                 tcm_mod_build_FC_include(fabric_mod_dir_val, fabric_mod_name)
 170         elif proto_ident == "SAS":
 171                 tcm_mod_build_SAS_include(fabric_mod_dir_val, fabric_mod_name)
 172         elif proto_ident == "iSCSI":
 173                 tcm_mod_build_iSCSI_include(fabric_mod_dir_val, fabric_mod_name)
 174         else:
 175                 print "Unsupported proto_ident: " + proto_ident
 176                 sys.exit(1)
 177
 178         return
 179
 180 def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 181         buf = ""
 182
 183         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_configfs.c"
 184         print "Writing file: " + f
 185
 186         p = open(f, 'w');
 187         if not p:
 188                 tcm_mod_err("Unable to open file: " + f)
 189
 190         buf = "#include <linux/module.h>\n"
 191         buf += "#include <linux/moduleparam.h>\n"
 192         buf += "#include <linux/version.h>\n"
 193         buf += "#include <generated/utsrelease.h>\n"
 194         buf += "#include <linux/utsname.h>\n"
 195         buf += "#include <linux/init.h>\n"
 196         buf += "#include <linux/slab.h>\n"
 197         buf += "#include <linux/kthread.h>\n"
 198         buf += "#include <linux/types.h>\n"
 199         buf += "#include <linux/string.h>\n"
 200         buf += "#include <linux/configfs.h>\n"
 201         buf += "#include <linux/ctype.h>\n"
 202         buf += "#include <asm/unaligned.h>\n\n"
 203         buf += "#include <target/target_core_base.h>\n"
 204         buf += "#include <target/target_core_fabric.h>\n"
 205         buf += "#include <target/target_core_fabric_configfs.h>\n"
 206         buf += "#include <target/configfs_macros.h>\n\n"
 207         buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
 208         buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
 209
 210         buf += "static const struct target_core_fabric_ops " + fabric_mod_name + "_ops;\n\n"
 211
 212         buf += "static struct se_portal_group *" + fabric_mod_name + "_make_tpg(\n"
 213         buf += "        struct se_wwn *wwn,\n"
 214         buf += "        struct config_group *group,\n"
 215         buf += "        const char *name)\n"
 216         buf += "{\n"
 217         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + "*" + fabric_mod_port + " = container_of(wwn,\n"
 218         buf += "                        struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n\n"
 219         buf += "        struct " + fabric_mod_name + "_tpg *tpg;\n"
 220         buf += "        unsigned long tpgt;\n"
 221         buf += "        int ret;\n\n"
 222         buf += "        if (strstr(name, \"tpgt_\") != name)\n"
 223         buf += "                return ERR_PTR(-EINVAL);\n"
 224         buf += "        if (kstrtoul(name + 5, 10, &tpgt) || tpgt > UINT_MAX)\n"
 225         buf += "                return ERR_PTR(-EINVAL);\n\n"
 226         buf += "        tpg = kzalloc(sizeof(struct " + fabric_mod_name + "_tpg), GFP_KERNEL);\n"
 227         buf += "        if (!tpg) {\n"
 228         buf += "                printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_tpg\");\n"
 229         buf += "                return ERR_PTR(-ENOMEM);\n"
 230         buf += "        }\n"
 231         buf += "        tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n"
 232         buf += "        tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n"
 233         buf += "        ret = core_tpg_register(&" + fabric_mod_name + "_ops, wwn,\n"
 234         buf += "                                &tpg->se_tpg, SCSI_PROTOCOL_SAS);\n"
 235         buf += "        if (ret < 0) {\n"
 236         buf += "                kfree(tpg);\n"
 237         buf += "                return NULL;\n"
 238         buf += "        }\n"
 239         buf += "        return &tpg->se_tpg;\n"
 240         buf += "}\n\n"
 241         buf += "static void " + fabric_mod_name + "_drop_tpg(struct se_portal_group *se_tpg)\n"
 242         buf += "{\n"
 243         buf += "        struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
 244         buf += "                                struct " + fabric_mod_name + "_tpg, se_tpg);\n\n"
 245         buf += "        core_tpg_deregister(se_tpg);\n"
 246         buf += "        kfree(tpg);\n"
 247         buf += "}\n\n"
 248
 249         buf += "static struct se_wwn *" + fabric_mod_name + "_make_" + fabric_mod_port + "(\n"
 250         buf += "        struct target_fabric_configfs *tf,\n"
 251         buf += "        struct config_group *group,\n"
 252         buf += "        const char *name)\n"
 253         buf += "{\n"
 254         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + ";\n"
 255
 256         if proto_ident == "FC" or proto_ident == "SAS":
 257                 buf += "        u64 wwpn = 0;\n\n"
 258
 259         buf += "        /* if (" + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
 260         buf += "                return ERR_PTR(-EINVAL); */\n\n"
 261         buf += "        " + fabric_mod_port + " = kzalloc(sizeof(struct " + fabric_mod_name + "_" + fabric_mod_port + "), GFP_KERNEL);\n"
 262         buf += "        if (!" + fabric_mod_port + ") {\n"
 263         buf += "                printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_" + fabric_mod_port + "\");\n"
 264         buf += "                return ERR_PTR(-ENOMEM);\n"
 265         buf += "        }\n"
 266
 267         if proto_ident == "FC" or proto_ident == "SAS":
 268                 buf += "        " + fabric_mod_port + "->" + fabric_mod_port + "_wwpn = wwpn;\n"
 269
 270         buf += "        /* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "_NAMELEN, wwpn); */\n\n"
 271         buf += "        return &" + fabric_mod_port + "->" + fabric_mod_port + "_wwn;\n"
 272         buf += "}\n\n"
 273         buf += "static void " + fabric_mod_name + "_drop_" + fabric_mod_port + "(struct se_wwn *wwn)\n"
 274         buf += "{\n"
 275         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = container_of(wwn,\n"
 276         buf += "                                struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n"
 277         buf += "        kfree(" + fabric_mod_port + ");\n"
 278         buf += "}\n\n"
 279         buf += "static ssize_t " + fabric_mod_name + "_wwn_show_attr_version(\n"
 280         buf += "        struct target_fabric_configfs *tf,\n"
 281         buf += "        char *page)\n"
 282         buf += "{\n"
 283         buf += "        return sprintf(page, \"" + fabric_mod_name.upper() + " fabric module %s on %s/%s\"\n"
 284         buf += "                \"on \"UTS_RELEASE\"\\n\", " + fabric_mod_name.upper() + "_VERSION, utsname()->sysname,\n"
 285         buf += "                utsname()->machine);\n"
 286         buf += "}\n\n"
 287         buf += "TF_WWN_ATTR_RO(" + fabric_mod_name + ", version);\n\n"
 288         buf += "static struct configfs_attribute *" + fabric_mod_name + "_wwn_attrs[] = {\n"
 289         buf += "        &" + fabric_mod_name + "_wwn_version.attr,\n"
 290         buf += "        NULL,\n"
 291         buf += "};\n\n"
 292
 293         buf += "static const struct target_core_fabric_ops " + fabric_mod_name + "_ops = {\n"
 294         buf += "        .module                         = THIS_MODULE,\n"
 295         buf += "        .name                           = " + fabric_mod_name + ",\n"
 296         buf += "        .get_fabric_name                = " + fabric_mod_name + "_get_fabric_name,\n"
 297         buf += "        .tpg_get_wwn                    = " + fabric_mod_name + "_get_fabric_wwn,\n"
 298         buf += "        .tpg_get_tag                    = " + fabric_mod_name + "_get_tag,\n"
 299         buf += "        .tpg_check_demo_mode            = " + fabric_mod_name + "_check_false,\n"
 300         buf += "        .tpg_check_demo_mode_cache      = " + fabric_mod_name + "_check_true,\n"
 301         buf += "        .tpg_check_demo_mode_write_protect = " + fabric_mod_name + "_check_true,\n"
 302         buf += "        .tpg_check_prod_mode_write_protect = " + fabric_mod_name + "_check_false,\n"
 303         buf += "        .tpg_get_inst_index             = " + fabric_mod_name + "_tpg_get_inst_index,\n"
 304         buf += "        .release_cmd                    = " + fabric_mod_name + "_release_cmd,\n"
 305         buf += "        .shutdown_session               = " + fabric_mod_name + "_shutdown_session,\n"
 306         buf += "        .close_session                  = " + fabric_mod_name + "_close_session,\n"
 307         buf += "        .sess_get_index                 = " + fabric_mod_name + "_sess_get_index,\n"
 308         buf += "        .sess_get_initiator_sid         = NULL,\n"
 309         buf += "        .write_pending                  = " + fabric_mod_name + "_write_pending,\n"
 310         buf += "        .write_pending_status           = " + fabric_mod_name + "_write_pending_status,\n"
 311         buf += "        .set_default_node_attributes    = " + fabric_mod_name + "_set_default_node_attrs,\n"
 312         buf += "        .get_cmd_state                  = " + fabric_mod_name + "_get_cmd_state,\n"
 313         buf += "        .queue_data_in                  = " + fabric_mod_name + "_queue_data_in,\n"
 314         buf += "        .queue_status                   = " + fabric_mod_name + "_queue_status,\n"
 315         buf += "        .queue_tm_rsp                   = " + fabric_mod_name + "_queue_tm_rsp,\n"
 316         buf += "        .aborted_task                   = " + fabric_mod_name + "_aborted_task,\n"
 317         buf += "        /*\n"
 318         buf += "         * Setup function pointers for generic logic in target_core_fabric_configfs.c\n"
 319         buf += "         */\n"
 320         buf += "        .fabric_make_wwn                = " + fabric_mod_name + "_make_" + fabric_mod_port + ",\n"
 321         buf += "        .fabric_drop_wwn                = " + fabric_mod_name + "_drop_" + fabric_mod_port + ",\n"
 322         buf += "        .fabric_make_tpg                = " + fabric_mod_name + "_make_tpg,\n"
 323         buf += "        .fabric_drop_tpg                = " + fabric_mod_name + "_drop_tpg,\n"
 324         buf += "\n"
 325         buf += "        .tfc_wwn_attrs                  = " + fabric_mod_name + "_wwn_attrs;\n"
 326         buf += "};\n\n"
 327
 328         buf += "static int __init " + fabric_mod_name + "_init(void)\n"
 329         buf += "{\n"
 330         buf += "        return target_register_template(" + fabric_mod_name + "_ops);\n"
 331         buf += "};\n\n"
 332
 333         buf += "static void __exit " + fabric_mod_name + "_exit(void)\n"
 334         buf += "{\n"
 335         buf += "        target_unregister_template(" + fabric_mod_name + "_ops);\n"
 336         buf += "};\n\n"
 337
 338         buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n"
 339         buf += "MODULE_LICENSE(\"GPL\");\n"
 340         buf += "module_init(" + fabric_mod_name + "_init);\n"
 341         buf += "module_exit(" + fabric_mod_name + "_exit);\n"
 342
 343         ret = p.write(buf)
 344         if ret:
 345                 tcm_mod_err("Unable to write f: " + f)
 346
 347         p.close()
 348
 349         return
 350
 351 def tcm_mod_scan_fabric_ops(tcm_dir):
 352
 353         fabric_ops_api = tcm_dir + "include/target/target_core_fabric.h"
 354
 355         print "Using tcm_mod_scan_fabric_ops: " + fabric_ops_api
 356         process_fo = 0;
 357
 358         p = open(fabric_ops_api, 'r')
 359
 360         line = p.readline()
 361         while line:
 362                 if process_fo == 0 and re.search('struct target_core_fabric_ops {', line):
 363                         line = p.readline()
 364                         continue
 365
 366                 if process_fo == 0:
 367                         process_fo = 1;
 368                         line = p.readline()
 369                         # Search for function pointer
 370                         if not re.search('\(\*', line):
 371                                 continue
 372
 373                         fabric_ops.append(line.rstrip())
 374                         continue
 375
 376                 line = p.readline()
 377                 # Search for function pointer
 378                 if not re.search('\(\*', line):
 379                         continue
 380
 381                 fabric_ops.append(line.rstrip())
 382
 383         p.close()
 384         return
 385
 386 def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
 387         buf = ""
 388         bufi = ""
 389
 390         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.c"
 391         print "Writing file: " + f
 392
 393         p = open(f, 'w')
 394         if not p:
 395                 tcm_mod_err("Unable to open file: " + f)
 396
 397         fi = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.h"
 398         print "Writing file: " + fi
 399
 400         pi = open(fi, 'w')
 401         if not pi:
 402                 tcm_mod_err("Unable to open file: " + fi)
 403
 404         buf = "#include <linux/slab.h>\n"
 405         buf += "#include <linux/kthread.h>\n"
 406         buf += "#include <linux/types.h>\n"
 407         buf += "#include <linux/list.h>\n"
 408         buf += "#include <linux/types.h>\n"
 409         buf += "#include <linux/string.h>\n"
 410         buf += "#include <linux/ctype.h>\n"
 411         buf += "#include <asm/unaligned.h>\n"
 412         buf += "#include <scsi/scsi_common.h>\n"
 413         buf += "#include <scsi/scsi_proto.h>\n"
 414         buf += "#include <target/target_core_base.h>\n"
 415         buf += "#include <target/target_core_fabric.h>\n"
 416         buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
 417         buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
 418
 419         buf += "int " + fabric_mod_name + "_check_true(struct se_portal_group *se_tpg)\n"
 420         buf += "{\n"
 421         buf += "        return 1;\n"
 422         buf += "}\n\n"
 423         bufi += "int " + fabric_mod_name + "_check_true(struct se_portal_group *);\n"
 424
 425         buf += "int " + fabric_mod_name + "_check_false(struct se_portal_group *se_tpg)\n"
 426         buf += "{\n"
 427         buf += "        return 0;\n"
 428         buf += "}\n\n"
 429         bufi += "int " + fabric_mod_name + "_check_false(struct se_portal_group *);\n"
 430
 431         total_fabric_ops = len(fabric_ops)
 432         i = 0
 433
 434         while i < total_fabric_ops:
 435                 fo = fabric_ops[i]
 436                 i += 1
 437 #               print "fabric_ops: " + fo
 438
 439                 if re.search('get_fabric_name', fo):
 440                         buf += "char *" + fabric_mod_name + "_get_fabric_name(void)\n"
 441                         buf += "{\n"
 442                         buf += "        return \"" + fabric_mod_name + "\";\n"
 443                         buf += "}\n\n"
 444                         bufi += "char *" + fabric_mod_name + "_get_fabric_name(void);\n"
 445                         continue
 446
 447                 if re.search('get_wwn', fo):
 448                         buf += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *se_tpg)\n"
 449                         buf += "{\n"
 450                         buf += "        struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
 451                         buf += "                                struct " + fabric_mod_name + "_tpg, se_tpg);\n"
 452                         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n\n"
 453                         buf += "        return &" + fabric_mod_port + "->" + fabric_mod_port + "_name[0];\n"
 454                         buf += "}\n\n"
 455                         bufi += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *);\n"
 456
 457                 if re.search('get_tag', fo):
 458                         buf += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *se_tpg)\n"
 459                         buf += "{\n"
 460                         buf += "        struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
 461                         buf += "                                struct " + fabric_mod_name + "_tpg, se_tpg);\n"
 462                         buf += "        return tpg->" + fabric_mod_port + "_tpgt;\n"
 463                         buf += "}\n\n"
 464                         bufi += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *);\n"
 465
 466                 if re.search('tpg_get_inst_index\)\(', fo):
 467                         buf += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *se_tpg)\n"
 468                         buf += "{\n"
 469                         buf += "        return 1;\n"
 470                         buf += "}\n\n"
 471                         bufi += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *);\n"
 472
 473                 if re.search('\*release_cmd\)\(', fo):
 474                         buf += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *se_cmd)\n"
 475                         buf += "{\n"
 476                         buf += "        return;\n"
 477                         buf += "}\n\n"
 478                         bufi += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *);\n"
 479
 480                 if re.search('shutdown_session\)\(', fo):
 481                         buf += "int " + fabric_mod_name + "_shutdown_session(struct se_session *se_sess)\n"
 482                         buf += "{\n"
 483                         buf += "        return 0;\n"
 484                         buf += "}\n\n"
 485                         bufi += "int " + fabric_mod_name + "_shutdown_session(struct se_session *);\n"
 486
 487                 if re.search('close_session\)\(', fo):
 488                         buf += "void " + fabric_mod_name + "_close_session(struct se_session *se_sess)\n"
 489                         buf += "{\n"
 490                         buf += "        return;\n"
 491                         buf += "}\n\n"
 492                         bufi += "void " + fabric_mod_name + "_close_session(struct se_session *);\n"
 493
 494                 if re.search('sess_get_index\)\(', fo):
 495                         buf += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *se_sess)\n"
 496                         buf += "{\n"
 497                         buf += "        return 0;\n"
 498                         buf += "}\n\n"
 499                         bufi += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *);\n"
 500
 501                 if re.search('write_pending\)\(', fo):
 502                         buf += "int " + fabric_mod_name + "_write_pending(struct se_cmd *se_cmd)\n"
 503                         buf += "{\n"
 504                         buf += "        return 0;\n"
 505                         buf += "}\n\n"
 506                         bufi += "int " + fabric_mod_name + "_write_pending(struct se_cmd *);\n"
 507
 508                 if re.search('write_pending_status\)\(', fo):
 509                         buf += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *se_cmd)\n"
 510                         buf += "{\n"
 511                         buf += "        return 0;\n"
 512                         buf += "}\n\n"
 513                         bufi += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *);\n"
 514
 515                 if re.search('set_default_node_attributes\)\(', fo):
 516                         buf += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *nacl)\n"
 517                         buf += "{\n"
 518                         buf += "        return;\n"
 519                         buf += "}\n\n"
 520                         bufi += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *);\n"
 521
 522                 if re.search('get_cmd_state\)\(', fo):
 523                         buf += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *se_cmd)\n"
 524                         buf += "{\n"
 525                         buf += "        return 0;\n"
 526                         buf += "}\n\n"
 527                         bufi += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *);\n"
 528
 529                 if re.search('queue_data_in\)\(', fo):
 530                         buf += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *se_cmd)\n"
 531                         buf += "{\n"
 532                         buf += "        return 0;\n"
 533                         buf += "}\n\n"
 534                         bufi += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *);\n"
 535
 536                 if re.search('queue_status\)\(', fo):
 537                         buf += "int " + fabric_mod_name + "_queue_status(struct se_cmd *se_cmd)\n"
 538                         buf += "{\n"
 539                         buf += "        return 0;\n"
 540                         buf += "}\n\n"
 541                         bufi += "int " + fabric_mod_name + "_queue_status(struct se_cmd *);\n"
 542
 543                 if re.search('queue_tm_rsp\)\(', fo):
 544                         buf += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n"
 545                         buf += "{\n"
 546                         buf += "        return;\n"
 547                         buf += "}\n\n"
 548                         bufi += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n"
 549
 550                 if re.search('aborted_task\)\(', fo):
 551                         buf += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *se_cmd)\n"
 552                         buf += "{\n"
 553                         buf += "        return;\n"
 554                         buf += "}\n\n"
 555                         bufi += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *);\n"
 556
 557         ret = p.write(buf)
 558         if ret:
 559                 tcm_mod_err("Unable to write f: " + f)
 560
 561         p.close()
 562
 563         ret = pi.write(bufi)
 564         if ret:
 565                 tcm_mod_err("Unable to write fi: " + fi)
 566
 567         pi.close()
 568         return
 569
 570 def tcm_mod_build_kbuild(fabric_mod_dir_var, fabric_mod_name):
 571
 572         buf = ""
 573         f = fabric_mod_dir_var + "/Makefile"
 574         print "Writing file: " + f
 575
 576         p = open(f, 'w')
 577         if not p:
 578                 tcm_mod_err("Unable to open file: " + f)
 579
 580         buf += fabric_mod_name + "-objs                 := " + fabric_mod_name + "_fabric.o \\\n"
 581         buf += "                                           " + fabric_mod_name + "_configfs.o\n"
 582         buf += "obj-$(CONFIG_" + fabric_mod_name.upper() + ")           += " + fabric_mod_name + ".o\n"
 583
 584         ret = p.write(buf)
 585         if ret:
 586                 tcm_mod_err("Unable to write f: " + f)
 587
 588         p.close()
 589         return
 590
 591 def tcm_mod_build_kconfig(fabric_mod_dir_var, fabric_mod_name):
 592
 593         buf = ""
 594         f = fabric_mod_dir_var + "/Kconfig"
 595         print "Writing file: " + f
 596
 597         p = open(f, 'w')
 598         if not p:
 599                 tcm_mod_err("Unable to open file: " + f)
 600
 601         buf = "config " + fabric_mod_name.upper() + "\n"
 602         buf += "        tristate \"" + fabric_mod_name.upper() + " fabric module\"\n"
 603         buf += "        depends on TARGET_CORE && CONFIGFS_FS\n"
 604         buf += "        default n\n"
 605         buf += "        ---help---\n"
 606         buf += "        Say Y here to enable the " + fabric_mod_name.upper() + " fabric module\n"
 607
 608         ret = p.write(buf)
 609         if ret:
 610                 tcm_mod_err("Unable to write f: " + f)
 611
 612         p.close()
 613         return
 614
 615 def tcm_mod_add_kbuild(tcm_dir, fabric_mod_name):
 616         buf = "obj-$(CONFIG_" + fabric_mod_name.upper() + ")    += " + fabric_mod_name.lower() + "/\n"
 617         kbuild = tcm_dir + "/drivers/target/Makefile"
 618
 619         f = open(kbuild, 'a')
 620         f.write(buf)
 621         f.close()
 622         return
 623
 624 def tcm_mod_add_kconfig(tcm_dir, fabric_mod_name):
 625         buf = "source \"drivers/target/" + fabric_mod_name.lower() + "/Kconfig\"\n"
 626         kconfig = tcm_dir + "/drivers/target/Kconfig"
 627
 628         f = open(kconfig, 'a')
 629         f.write(buf)
 630         f.close()
 631         return
 632
 633 def main(modname, proto_ident):
 634 #       proto_ident = "FC"
 635 #       proto_ident = "SAS"
 636 #       proto_ident = "iSCSI"
 637
 638         tcm_dir = os.getcwd();
 639         tcm_dir += "/../../"
 640         print "tcm_dir: " + tcm_dir
 641         fabric_mod_name = modname
 642         fabric_mod_dir = tcm_dir + "drivers/target/" + fabric_mod_name
 643         print "Set fabric_mod_name: " + fabric_mod_name
 644         print "Set fabric_mod_dir: " + fabric_mod_dir
 645         print "Using proto_ident: " + proto_ident
 646
 647         if proto_ident != "FC" and proto_ident != "SAS" and proto_ident != "iSCSI":
 648                 print "Unsupported proto_ident: " + proto_ident
 649                 sys.exit(1)
 650
 651         ret = tcm_mod_create_module_subdir(fabric_mod_dir)
 652         if ret:
 653                 print "tcm_mod_create_module_subdir() failed because module already exists!"
 654                 sys.exit(1)
 655
 656         tcm_mod_build_base_includes(proto_ident, fabric_mod_dir, fabric_mod_name)
 657         tcm_mod_scan_fabric_ops(tcm_dir)
 658         tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir, fabric_mod_name)
 659         tcm_mod_build_configfs(proto_ident, fabric_mod_dir, fabric_mod_name)
 660         tcm_mod_build_kbuild(fabric_mod_dir, fabric_mod_name)
 661         tcm_mod_build_kconfig(fabric_mod_dir, fabric_mod_name)
 662
 663         input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Makefile..? [yes,no]: ")
 664         if input == "yes" or input == "y":
 665                 tcm_mod_add_kbuild(tcm_dir, fabric_mod_name)
 666
 667         input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Kconfig..? [yes,no]: ")
 668         if input == "yes" or input == "y":
 669                 tcm_mod_add_kconfig(tcm_dir, fabric_mod_name)
 670
 671         return
 672
 673 parser = optparse.OptionParser()
 674 parser.add_option('-m', '--modulename', help='Module name', dest='modname',
 675                 action='store', nargs=1, type='string')
 676 parser.add_option('-p', '--protoident', help='Protocol Ident', dest='protoident',
 677                 action='store', nargs=1, type='string')
 678
 679 (opts, args) = parser.parse_args()
 680
 681 mandatories = ['modname', 'protoident']
 682 for m in mandatories:
 683         if not opts.__dict__[m]:
 684                 print "mandatory option is missing\n"
 685                 parser.print_help()
 686                 exit(-1)
 687
 688 if __name__ == "__main__":
 689
 690         main(str(opts.modname), opts.protoident)