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[linux-beck.git] / 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"
203         buf += "#include <scsi/scsi_proto.h>\n\n"
204         buf += "#include <target/target_core_base.h>\n"
205         buf += "#include <target/target_core_fabric.h>\n"
206         buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
207         buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
208
209         buf += "static const struct target_core_fabric_ops " + fabric_mod_name + "_ops;\n\n"
210
211         buf += "static struct se_portal_group *" + fabric_mod_name + "_make_tpg(\n"
212         buf += "        struct se_wwn *wwn,\n"
213         buf += "        struct config_group *group,\n"
214         buf += "        const char *name)\n"
215         buf += "{\n"
216         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + "*" + fabric_mod_port + " = container_of(wwn,\n"
217         buf += "                        struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n\n"
218         buf += "        struct " + fabric_mod_name + "_tpg *tpg;\n"
219         buf += "        unsigned long tpgt;\n"
220         buf += "        int ret;\n\n"
221         buf += "        if (strstr(name, \"tpgt_\") != name)\n"
222         buf += "                return ERR_PTR(-EINVAL);\n"
223         buf += "        if (kstrtoul(name + 5, 10, &tpgt) || tpgt > UINT_MAX)\n"
224         buf += "                return ERR_PTR(-EINVAL);\n\n"
225         buf += "        tpg = kzalloc(sizeof(struct " + fabric_mod_name + "_tpg), GFP_KERNEL);\n"
226         buf += "        if (!tpg) {\n"
227         buf += "                printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_tpg\");\n"
228         buf += "                return ERR_PTR(-ENOMEM);\n"
229         buf += "        }\n"
230         buf += "        tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n"
231         buf += "        tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n"
232
233         if proto_ident == "FC":
234                 buf += "        ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);\n"
235         elif proto_ident == "SAS":
236                 buf += "        ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_SAS);\n"
237         elif proto_ident == "iSCSI":
238                 buf += "        ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_ISCSI);\n"
239
240         buf += "        if (ret < 0) {\n"
241         buf += "                kfree(tpg);\n"
242         buf += "                return NULL;\n"
243         buf += "        }\n"
244         buf += "        return &tpg->se_tpg;\n"
245         buf += "}\n\n"
246         buf += "static void " + fabric_mod_name + "_drop_tpg(struct se_portal_group *se_tpg)\n"
247         buf += "{\n"
248         buf += "        struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
249         buf += "                                struct " + fabric_mod_name + "_tpg, se_tpg);\n\n"
250         buf += "        core_tpg_deregister(se_tpg);\n"
251         buf += "        kfree(tpg);\n"
252         buf += "}\n\n"
253
254         buf += "static struct se_wwn *" + fabric_mod_name + "_make_" + fabric_mod_port + "(\n"
255         buf += "        struct target_fabric_configfs *tf,\n"
256         buf += "        struct config_group *group,\n"
257         buf += "        const char *name)\n"
258         buf += "{\n"
259         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + ";\n"
260
261         if proto_ident == "FC" or proto_ident == "SAS":
262                 buf += "        u64 wwpn = 0;\n\n"
263
264         buf += "        /* if (" + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
265         buf += "                return ERR_PTR(-EINVAL); */\n\n"
266         buf += "        " + fabric_mod_port + " = kzalloc(sizeof(struct " + fabric_mod_name + "_" + fabric_mod_port + "), GFP_KERNEL);\n"
267         buf += "        if (!" + fabric_mod_port + ") {\n"
268         buf += "                printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_" + fabric_mod_port + "\");\n"
269         buf += "                return ERR_PTR(-ENOMEM);\n"
270         buf += "        }\n"
271
272         if proto_ident == "FC" or proto_ident == "SAS":
273                 buf += "        " + fabric_mod_port + "->" + fabric_mod_port + "_wwpn = wwpn;\n"
274
275         buf += "        /* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "_NAMELEN, wwpn); */\n\n"
276         buf += "        return &" + fabric_mod_port + "->" + fabric_mod_port + "_wwn;\n"
277         buf += "}\n\n"
278         buf += "static void " + fabric_mod_name + "_drop_" + fabric_mod_port + "(struct se_wwn *wwn)\n"
279         buf += "{\n"
280         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = container_of(wwn,\n"
281         buf += "                                struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n"
282         buf += "        kfree(" + fabric_mod_port + ");\n"
283         buf += "}\n\n"
284
285         buf += "static const struct target_core_fabric_ops " + fabric_mod_name + "_ops = {\n"
286         buf += "        .module                         = THIS_MODULE,\n"
287         buf += "        .name                           = \"" + fabric_mod_name + "\",\n"
288         buf += "        .get_fabric_name                = " + fabric_mod_name + "_get_fabric_name,\n"
289         buf += "        .tpg_get_wwn                    = " + fabric_mod_name + "_get_fabric_wwn,\n"
290         buf += "        .tpg_get_tag                    = " + fabric_mod_name + "_get_tag,\n"
291         buf += "        .tpg_check_demo_mode            = " + fabric_mod_name + "_check_false,\n"
292         buf += "        .tpg_check_demo_mode_cache      = " + fabric_mod_name + "_check_true,\n"
293         buf += "        .tpg_check_demo_mode_write_protect = " + fabric_mod_name + "_check_true,\n"
294         buf += "        .tpg_check_prod_mode_write_protect = " + fabric_mod_name + "_check_false,\n"
295         buf += "        .tpg_get_inst_index             = " + fabric_mod_name + "_tpg_get_inst_index,\n"
296         buf += "        .release_cmd                    = " + fabric_mod_name + "_release_cmd,\n"
297         buf += "        .shutdown_session               = " + fabric_mod_name + "_shutdown_session,\n"
298         buf += "        .close_session                  = " + fabric_mod_name + "_close_session,\n"
299         buf += "        .sess_get_index                 = " + fabric_mod_name + "_sess_get_index,\n"
300         buf += "        .sess_get_initiator_sid         = NULL,\n"
301         buf += "        .write_pending                  = " + fabric_mod_name + "_write_pending,\n"
302         buf += "        .write_pending_status           = " + fabric_mod_name + "_write_pending_status,\n"
303         buf += "        .set_default_node_attributes    = " + fabric_mod_name + "_set_default_node_attrs,\n"
304         buf += "        .get_cmd_state                  = " + fabric_mod_name + "_get_cmd_state,\n"
305         buf += "        .queue_data_in                  = " + fabric_mod_name + "_queue_data_in,\n"
306         buf += "        .queue_status                   = " + fabric_mod_name + "_queue_status,\n"
307         buf += "        .queue_tm_rsp                   = " + fabric_mod_name + "_queue_tm_rsp,\n"
308         buf += "        .aborted_task                   = " + fabric_mod_name + "_aborted_task,\n"
309         buf += "        /*\n"
310         buf += "         * Setup function pointers for generic logic in target_core_fabric_configfs.c\n"
311         buf += "         */\n"
312         buf += "        .fabric_make_wwn                = " + fabric_mod_name + "_make_" + fabric_mod_port + ",\n"
313         buf += "        .fabric_drop_wwn                = " + fabric_mod_name + "_drop_" + fabric_mod_port + ",\n"
314         buf += "        .fabric_make_tpg                = " + fabric_mod_name + "_make_tpg,\n"
315         buf += "        .fabric_drop_tpg                = " + fabric_mod_name + "_drop_tpg,\n"
316         buf += "};\n\n"
317
318         buf += "static int __init " + fabric_mod_name + "_init(void)\n"
319         buf += "{\n"
320         buf += "        return target_register_template(&" + fabric_mod_name + "_ops);\n"
321         buf += "};\n\n"
322
323         buf += "static void __exit " + fabric_mod_name + "_exit(void)\n"
324         buf += "{\n"
325         buf += "        target_unregister_template(&" + fabric_mod_name + "_ops);\n"
326         buf += "};\n\n"
327
328         buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n"
329         buf += "MODULE_LICENSE(\"GPL\");\n"
330         buf += "module_init(" + fabric_mod_name + "_init);\n"
331         buf += "module_exit(" + fabric_mod_name + "_exit);\n"
332
333         ret = p.write(buf)
334         if ret:
335                 tcm_mod_err("Unable to write f: " + f)
336
337         p.close()
338
339         return
340
341 def tcm_mod_scan_fabric_ops(tcm_dir):
342
343         fabric_ops_api = tcm_dir + "include/target/target_core_fabric.h"
344
345         print "Using tcm_mod_scan_fabric_ops: " + fabric_ops_api
346         process_fo = 0;
347
348         p = open(fabric_ops_api, 'r')
349
350         line = p.readline()
351         while line:
352                 if process_fo == 0 and re.search('struct target_core_fabric_ops {', line):
353                         line = p.readline()
354                         continue
355
356                 if process_fo == 0:
357                         process_fo = 1;
358                         line = p.readline()
359                         # Search for function pointer
360                         if not re.search('\(\*', line):
361                                 continue
362
363                         fabric_ops.append(line.rstrip())
364                         continue
365
366                 line = p.readline()
367                 # Search for function pointer
368                 if not re.search('\(\*', line):
369                         continue
370
371                 fabric_ops.append(line.rstrip())
372
373         p.close()
374         return
375
376 def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
377         buf = ""
378         bufi = ""
379
380         f = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.c"
381         print "Writing file: " + f
382
383         p = open(f, 'w')
384         if not p:
385                 tcm_mod_err("Unable to open file: " + f)
386
387         fi = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.h"
388         print "Writing file: " + fi
389
390         pi = open(fi, 'w')
391         if not pi:
392                 tcm_mod_err("Unable to open file: " + fi)
393
394         buf = "#include <linux/slab.h>\n"
395         buf += "#include <linux/kthread.h>\n"
396         buf += "#include <linux/types.h>\n"
397         buf += "#include <linux/list.h>\n"
398         buf += "#include <linux/types.h>\n"
399         buf += "#include <linux/string.h>\n"
400         buf += "#include <linux/ctype.h>\n"
401         buf += "#include <asm/unaligned.h>\n"
402         buf += "#include <scsi/scsi_common.h>\n"
403         buf += "#include <scsi/scsi_proto.h>\n"
404         buf += "#include <target/target_core_base.h>\n"
405         buf += "#include <target/target_core_fabric.h>\n"
406         buf += "#include \"" + fabric_mod_name + "_base.h\"\n"
407         buf += "#include \"" + fabric_mod_name + "_fabric.h\"\n\n"
408
409         buf += "int " + fabric_mod_name + "_check_true(struct se_portal_group *se_tpg)\n"
410         buf += "{\n"
411         buf += "        return 1;\n"
412         buf += "}\n\n"
413         bufi += "int " + fabric_mod_name + "_check_true(struct se_portal_group *);\n"
414
415         buf += "int " + fabric_mod_name + "_check_false(struct se_portal_group *se_tpg)\n"
416         buf += "{\n"
417         buf += "        return 0;\n"
418         buf += "}\n\n"
419         bufi += "int " + fabric_mod_name + "_check_false(struct se_portal_group *);\n"
420
421         total_fabric_ops = len(fabric_ops)
422         i = 0
423
424         while i < total_fabric_ops:
425                 fo = fabric_ops[i]
426                 i += 1
427 #               print "fabric_ops: " + fo
428
429                 if re.search('get_fabric_name', fo):
430                         buf += "char *" + fabric_mod_name + "_get_fabric_name(void)\n"
431                         buf += "{\n"
432                         buf += "        return \"" + fabric_mod_name + "\";\n"
433                         buf += "}\n\n"
434                         bufi += "char *" + fabric_mod_name + "_get_fabric_name(void);\n"
435                         continue
436
437                 if re.search('get_wwn', fo):
438                         buf += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *se_tpg)\n"
439                         buf += "{\n"
440                         buf += "        struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
441                         buf += "                                struct " + fabric_mod_name + "_tpg, se_tpg);\n"
442                         buf += "        struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n\n"
443                         buf += "        return &" + fabric_mod_port + "->" + fabric_mod_port + "_name[0];\n"
444                         buf += "}\n\n"
445                         bufi += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *);\n"
446
447                 if re.search('get_tag', fo):
448                         buf += "u16 " + fabric_mod_name + "_get_tag(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 += "        return tpg->" + fabric_mod_port + "_tpgt;\n"
453                         buf += "}\n\n"
454                         bufi += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *);\n"
455
456                 if re.search('tpg_get_inst_index\)\(', fo):
457                         buf += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *se_tpg)\n"
458                         buf += "{\n"
459                         buf += "        return 1;\n"
460                         buf += "}\n\n"
461                         bufi += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *);\n"
462
463                 if re.search('\*release_cmd\)\(', fo):
464                         buf += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *se_cmd)\n"
465                         buf += "{\n"
466                         buf += "        return;\n"
467                         buf += "}\n\n"
468                         bufi += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *);\n"
469
470                 if re.search('shutdown_session\)\(', fo):
471                         buf += "int " + fabric_mod_name + "_shutdown_session(struct se_session *se_sess)\n"
472                         buf += "{\n"
473                         buf += "        return 0;\n"
474                         buf += "}\n\n"
475                         bufi += "int " + fabric_mod_name + "_shutdown_session(struct se_session *);\n"
476
477                 if re.search('close_session\)\(', fo):
478                         buf += "void " + fabric_mod_name + "_close_session(struct se_session *se_sess)\n"
479                         buf += "{\n"
480                         buf += "        return;\n"
481                         buf += "}\n\n"
482                         bufi += "void " + fabric_mod_name + "_close_session(struct se_session *);\n"
483
484                 if re.search('sess_get_index\)\(', fo):
485                         buf += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *se_sess)\n"
486                         buf += "{\n"
487                         buf += "        return 0;\n"
488                         buf += "}\n\n"
489                         bufi += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *);\n"
490
491                 if re.search('write_pending\)\(', fo):
492                         buf += "int " + fabric_mod_name + "_write_pending(struct se_cmd *se_cmd)\n"
493                         buf += "{\n"
494                         buf += "        return 0;\n"
495                         buf += "}\n\n"
496                         bufi += "int " + fabric_mod_name + "_write_pending(struct se_cmd *);\n"
497
498                 if re.search('write_pending_status\)\(', fo):
499                         buf += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *se_cmd)\n"
500                         buf += "{\n"
501                         buf += "        return 0;\n"
502                         buf += "}\n\n"
503                         bufi += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *);\n"
504
505                 if re.search('set_default_node_attributes\)\(', fo):
506                         buf += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *nacl)\n"
507                         buf += "{\n"
508                         buf += "        return;\n"
509                         buf += "}\n\n"
510                         bufi += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *);\n"
511
512                 if re.search('get_cmd_state\)\(', fo):
513                         buf += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *se_cmd)\n"
514                         buf += "{\n"
515                         buf += "        return 0;\n"
516                         buf += "}\n\n"
517                         bufi += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *);\n"
518
519                 if re.search('queue_data_in\)\(', fo):
520                         buf += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *se_cmd)\n"
521                         buf += "{\n"
522                         buf += "        return 0;\n"
523                         buf += "}\n\n"
524                         bufi += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *);\n"
525
526                 if re.search('queue_status\)\(', fo):
527                         buf += "int " + fabric_mod_name + "_queue_status(struct se_cmd *se_cmd)\n"
528                         buf += "{\n"
529                         buf += "        return 0;\n"
530                         buf += "}\n\n"
531                         bufi += "int " + fabric_mod_name + "_queue_status(struct se_cmd *);\n"
532
533                 if re.search('queue_tm_rsp\)\(', fo):
534                         buf += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n"
535                         buf += "{\n"
536                         buf += "        return;\n"
537                         buf += "}\n\n"
538                         bufi += "void " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n"
539
540                 if re.search('aborted_task\)\(', fo):
541                         buf += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *se_cmd)\n"
542                         buf += "{\n"
543                         buf += "        return;\n"
544                         buf += "}\n\n"
545                         bufi += "void " + fabric_mod_name + "_aborted_task(struct se_cmd *);\n"
546
547         ret = p.write(buf)
548         if ret:
549                 tcm_mod_err("Unable to write f: " + f)
550
551         p.close()
552
553         ret = pi.write(bufi)
554         if ret:
555                 tcm_mod_err("Unable to write fi: " + fi)
556
557         pi.close()
558         return
559
560 def tcm_mod_build_kbuild(fabric_mod_dir_var, fabric_mod_name):
561
562         buf = ""
563         f = fabric_mod_dir_var + "/Makefile"
564         print "Writing file: " + f
565
566         p = open(f, 'w')
567         if not p:
568                 tcm_mod_err("Unable to open file: " + f)
569
570         buf += fabric_mod_name + "-objs                 := " + fabric_mod_name + "_fabric.o \\\n"
571         buf += "                                           " + fabric_mod_name + "_configfs.o\n"
572         buf += "obj-$(CONFIG_" + fabric_mod_name.upper() + ")           += " + fabric_mod_name + ".o\n"
573
574         ret = p.write(buf)
575         if ret:
576                 tcm_mod_err("Unable to write f: " + f)
577
578         p.close()
579         return
580
581 def tcm_mod_build_kconfig(fabric_mod_dir_var, fabric_mod_name):
582
583         buf = ""
584         f = fabric_mod_dir_var + "/Kconfig"
585         print "Writing file: " + f
586
587         p = open(f, 'w')
588         if not p:
589                 tcm_mod_err("Unable to open file: " + f)
590
591         buf = "config " + fabric_mod_name.upper() + "\n"
592         buf += "        tristate \"" + fabric_mod_name.upper() + " fabric module\"\n"
593         buf += "        depends on TARGET_CORE && CONFIGFS_FS\n"
594         buf += "        default n\n"
595         buf += "        ---help---\n"
596         buf += "        Say Y here to enable the " + fabric_mod_name.upper() + " fabric module\n"
597
598         ret = p.write(buf)
599         if ret:
600                 tcm_mod_err("Unable to write f: " + f)
601
602         p.close()
603         return
604
605 def tcm_mod_add_kbuild(tcm_dir, fabric_mod_name):
606         buf = "obj-$(CONFIG_" + fabric_mod_name.upper() + ")    += " + fabric_mod_name.lower() + "/\n"
607         kbuild = tcm_dir + "/drivers/target/Makefile"
608
609         f = open(kbuild, 'a')
610         f.write(buf)
611         f.close()
612         return
613
614 def tcm_mod_add_kconfig(tcm_dir, fabric_mod_name):
615         buf = "source \"drivers/target/" + fabric_mod_name.lower() + "/Kconfig\"\n"
616         kconfig = tcm_dir + "/drivers/target/Kconfig"
617
618         f = open(kconfig, 'a')
619         f.write(buf)
620         f.close()
621         return
622
623 def main(modname, proto_ident):
624 #       proto_ident = "FC"
625 #       proto_ident = "SAS"
626 #       proto_ident = "iSCSI"
627
628         tcm_dir = os.getcwd();
629         tcm_dir += "/../../"
630         print "tcm_dir: " + tcm_dir
631         fabric_mod_name = modname
632         fabric_mod_dir = tcm_dir + "drivers/target/" + fabric_mod_name
633         print "Set fabric_mod_name: " + fabric_mod_name
634         print "Set fabric_mod_dir: " + fabric_mod_dir
635         print "Using proto_ident: " + proto_ident
636
637         if proto_ident != "FC" and proto_ident != "SAS" and proto_ident != "iSCSI":
638                 print "Unsupported proto_ident: " + proto_ident
639                 sys.exit(1)
640
641         ret = tcm_mod_create_module_subdir(fabric_mod_dir)
642         if ret:
643                 print "tcm_mod_create_module_subdir() failed because module already exists!"
644                 sys.exit(1)
645
646         tcm_mod_build_base_includes(proto_ident, fabric_mod_dir, fabric_mod_name)
647         tcm_mod_scan_fabric_ops(tcm_dir)
648         tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir, fabric_mod_name)
649         tcm_mod_build_configfs(proto_ident, fabric_mod_dir, fabric_mod_name)
650         tcm_mod_build_kbuild(fabric_mod_dir, fabric_mod_name)
651         tcm_mod_build_kconfig(fabric_mod_dir, fabric_mod_name)
652
653         input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Makefile..? [yes,no]: ")
654         if input == "yes" or input == "y":
655                 tcm_mod_add_kbuild(tcm_dir, fabric_mod_name)
656
657         input = raw_input("Would you like to add " + fabric_mod_name + " to drivers/target/Kconfig..? [yes,no]: ")
658         if input == "yes" or input == "y":
659                 tcm_mod_add_kconfig(tcm_dir, fabric_mod_name)
660
661         return
662
663 parser = optparse.OptionParser()
664 parser.add_option('-m', '--modulename', help='Module name', dest='modname',
665                 action='store', nargs=1, type='string')
666 parser.add_option('-p', '--protoident', help='Protocol Ident', dest='protoident',
667                 action='store', nargs=1, type='string')
668
669 (opts, args) = parser.parse_args()
670
671 mandatories = ['modname', 'protoident']
672 for m in mandatories:
673         if not opts.__dict__[m]:
674                 print "mandatory option is missing\n"
675                 parser.print_help()
676                 exit(-1)
677
678 if __name__ == "__main__":
679
680         main(str(opts.modname), opts.protoident)