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authorNicholas Bellinger <nab@linux-iscsi.org>2010-12-17 14:11:26 -0500
committerJames Bottomley <James.Bottomley@suse.de>2011-01-14 11:12:29 -0500
commitc66ac9db8d4ad9994a02b3e933ea2ccc643e1fe5 (patch)
tree71c6344688bf56ea6aaf18c586ab69ff4f077ade /Documentation/target
parentf4013c3879d1bbd9f3ab8351185decd049502368 (diff)
[SCSI] target: Add LIO target core v4.0.0-rc6
LIO target is a full featured in-kernel target framework with the following feature set: High-performance, non-blocking, multithreaded architecture with SIMD support. Advanced SCSI feature set: * Persistent Reservations (PRs) * Asymmetric Logical Unit Assignment (ALUA) * Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S) * Full Error Recovery (ERL=0,1,2) * Active/active task migration and session continuation (ERL=2) * Thin LUN provisioning (UNMAP and WRITE_SAMExx) Multiprotocol target plugins Storage media independence: * Virtualization of all storage media; transparent mapping of IO to LUNs * No hard limits on number of LUNs per Target; maximum LUN size ~750 TB * Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc. Standards compliance: * Full compliance with IETF (RFC 3720) * Full implementation of SPC-4 PRs and ALUA Significant code cleanups done by Christoph Hellwig. [jejb: fix up for new block bdev exclusive interface. Minor fixes from Randy Dunlap and Dan Carpenter.] Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'Documentation/target')
-rwxr-xr-xDocumentation/target/tcm_mod_builder.py1094
-rw-r--r--Documentation/target/tcm_mod_builder.txt145
2 files changed, 1239 insertions, 0 deletions
diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py
new file mode 100755
index 000000000000..dbeb8a0d7175
--- /dev/null
+++ b/Documentation/target/tcm_mod_builder.py
@@ -0,0 +1,1094 @@
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#
9import os, sys
10import subprocess as sub
11import string
12import re
13import optparse
14
15tcm_dir = ""
16
17fabric_ops = []
18fabric_mod_dir = ""
19fabric_mod_port = ""
20fabric_mod_init_port = ""
21
22def tcm_mod_err(msg):
23 print msg
24 sys.exit(1)
25
26def 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
38def 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 + "_nacl {\n"
54 buf += " /* Binary World Wide unique Port Name for FC Initiator Nport */\n"
55 buf += " u64 nport_wwpn;\n"
56 buf += " /* ASCII formatted WWPN for FC Initiator Nport */\n"
57 buf += " char nport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
58 buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n"
59 buf += " struct se_node_acl se_node_acl;\n"
60 buf += "};\n"
61 buf += "\n"
62 buf += "struct " + fabric_mod_name + "_tpg {\n"
63 buf += " /* FC lport target portal group tag for TCM */\n"
64 buf += " u16 lport_tpgt;\n"
65 buf += " /* Pointer back to " + fabric_mod_name + "_lport */\n"
66 buf += " struct " + fabric_mod_name + "_lport *lport;\n"
67 buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
68 buf += " struct se_portal_group se_tpg;\n"
69 buf += "};\n"
70 buf += "\n"
71 buf += "struct " + fabric_mod_name + "_lport {\n"
72 buf += " /* SCSI protocol the lport is providing */\n"
73 buf += " u8 lport_proto_id;\n"
74 buf += " /* Binary World Wide unique Port Name for FC Target Lport */\n"
75 buf += " u64 lport_wwpn;\n"
76 buf += " /* ASCII formatted WWPN for FC Target Lport */\n"
77 buf += " char lport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
78 buf += " /* Returned by " + fabric_mod_name + "_make_lport() */\n"
79 buf += " struct se_wwn lport_wwn;\n"
80 buf += "};\n"
81
82 ret = p.write(buf)
83 if ret:
84 tcm_mod_err("Unable to write f: " + f)
85
86 p.close()
87
88 fabric_mod_port = "lport"
89 fabric_mod_init_port = "nport"
90
91 return
92
93def tcm_mod_build_SAS_include(fabric_mod_dir_var, fabric_mod_name):
94 global fabric_mod_port
95 global fabric_mod_init_port
96 buf = ""
97
98 f = fabric_mod_dir_var + "/" + fabric_mod_name + "_base.h"
99 print "Writing file: " + f
100
101 p = open(f, 'w');
102 if not p:
103 tcm_mod_err("Unable to open file: " + f)
104
105 buf = "#define " + fabric_mod_name.upper() + "_VERSION \"v0.1\"\n"
106 buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n"
107 buf += "\n"
108 buf += "struct " + fabric_mod_name + "_nacl {\n"
109 buf += " /* Binary World Wide unique Port Name for SAS Initiator port */\n"
110 buf += " u64 iport_wwpn;\n"
111 buf += " /* ASCII formatted WWPN for Sas Initiator port */\n"
112 buf += " char iport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
113 buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n"
114 buf += " struct se_node_acl se_node_acl;\n"
115 buf += "};\n\n"
116 buf += "struct " + fabric_mod_name + "_tpg {\n"
117 buf += " /* SAS port target portal group tag for TCM */\n"
118 buf += " u16 tport_tpgt;\n"
119 buf += " /* Pointer back to " + fabric_mod_name + "_tport */\n"
120 buf += " struct " + fabric_mod_name + "_tport *tport;\n"
121 buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
122 buf += " struct se_portal_group se_tpg;\n"
123 buf += "};\n\n"
124 buf += "struct " + fabric_mod_name + "_tport {\n"
125 buf += " /* SCSI protocol the tport is providing */\n"
126 buf += " u8 tport_proto_id;\n"
127 buf += " /* Binary World Wide unique Port Name for SAS Target port */\n"
128 buf += " u64 tport_wwpn;\n"
129 buf += " /* ASCII formatted WWPN for SAS Target port */\n"
130 buf += " char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
131 buf += " /* Returned by " + fabric_mod_name + "_make_tport() */\n"
132 buf += " struct se_wwn tport_wwn;\n"
133 buf += "};\n"
134
135 ret = p.write(buf)
136 if ret:
137 tcm_mod_err("Unable to write f: " + f)
138
139 p.close()
140
141 fabric_mod_port = "tport"
142 fabric_mod_init_port = "iport"
143
144 return
145
146def tcm_mod_build_iSCSI_include(fabric_mod_dir_var, fabric_mod_name):
147 global fabric_mod_port
148 global fabric_mod_init_port
149 buf = ""
150
151 f = fabric_mod_dir_var + "/" + fabric_mod_name + "_base.h"
152 print "Writing file: " + f
153
154 p = open(f, 'w');
155 if not p:
156 tcm_mod_err("Unable to open file: " + f)
157
158 buf = "#define " + fabric_mod_name.upper() + "_VERSION \"v0.1\"\n"
159 buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n"
160 buf += "\n"
161 buf += "struct " + fabric_mod_name + "_nacl {\n"
162 buf += " /* ASCII formatted InitiatorName */\n"
163 buf += " char iport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
164 buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n"
165 buf += " struct se_node_acl se_node_acl;\n"
166 buf += "};\n\n"
167 buf += "struct " + fabric_mod_name + "_tpg {\n"
168 buf += " /* iSCSI target portal group tag for TCM */\n"
169 buf += " u16 tport_tpgt;\n"
170 buf += " /* Pointer back to " + fabric_mod_name + "_tport */\n"
171 buf += " struct " + fabric_mod_name + "_tport *tport;\n"
172 buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n"
173 buf += " struct se_portal_group se_tpg;\n"
174 buf += "};\n\n"
175 buf += "struct " + fabric_mod_name + "_tport {\n"
176 buf += " /* SCSI protocol the tport is providing */\n"
177 buf += " u8 tport_proto_id;\n"
178 buf += " /* ASCII formatted TargetName for IQN */\n"
179 buf += " char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n"
180 buf += " /* Returned by " + fabric_mod_name + "_make_tport() */\n"
181 buf += " struct se_wwn tport_wwn;\n"
182 buf += "};\n"
183
184 ret = p.write(buf)
185 if ret:
186 tcm_mod_err("Unable to write f: " + f)
187
188 p.close()
189
190 fabric_mod_port = "tport"
191 fabric_mod_init_port = "iport"
192
193 return
194
195def tcm_mod_build_base_includes(proto_ident, fabric_mod_dir_val, fabric_mod_name):
196
197 if proto_ident == "FC":
198 tcm_mod_build_FC_include(fabric_mod_dir_val, fabric_mod_name)
199 elif proto_ident == "SAS":
200 tcm_mod_build_SAS_include(fabric_mod_dir_val, fabric_mod_name)
201 elif proto_ident == "iSCSI":
202 tcm_mod_build_iSCSI_include(fabric_mod_dir_val, fabric_mod_name)
203 else:
204 print "Unsupported proto_ident: " + proto_ident
205 sys.exit(1)
206
207 return
208
209def tcm_mod_build_configfs(proto_ident, fabric_mod_dir_var, fabric_mod_name):
210 buf = ""
211
212 f = fabric_mod_dir_var + "/" + fabric_mod_name + "_configfs.c"
213 print "Writing file: " + f
214
215 p = open(f, 'w');
216 if not p:
217 tcm_mod_err("Unable to open file: " + f)
218
219 buf = "#include <linux/module.h>\n"
220 buf += "#include <linux/moduleparam.h>\n"
221 buf += "#include <linux/version.h>\n"
222 buf += "#include <generated/utsrelease.h>\n"
223 buf += "#include <linux/utsname.h>\n"
224 buf += "#include <linux/init.h>\n"
225 buf += "#include <linux/slab.h>\n"
226 buf += "#include <linux/kthread.h>\n"
227 buf += "#include <linux/types.h>\n"
228 buf += "#include <linux/string.h>\n"
229 buf += "#include <linux/configfs.h>\n"
230 buf += "#include <linux/ctype.h>\n"
231 buf += "#include <asm/unaligned.h>\n\n"
232 buf += "#include <target/target_core_base.h>\n"
233 buf += "#include <target/target_core_transport.h>\n"
234 buf += "#include <target/target_core_fabric_ops.h>\n"
235 buf += "#include <target/target_core_fabric_configfs.h>\n"
236 buf += "#include <target/target_core_fabric_lib.h>\n"
237 buf += "#include <target/target_core_device.h>\n"
238 buf += "#include <target/target_core_tpg.h>\n"
239 buf += "#include <target/target_core_configfs.h>\n"
240 buf += "#include <target/target_core_base.h>\n"
241 buf += "#include <target/configfs_macros.h>\n\n"
242 buf += "#include <" + fabric_mod_name + "_base.h>\n"
243 buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n"
244
245 buf += "/* Local pointer to allocated TCM configfs fabric module */\n"
246 buf += "struct target_fabric_configfs *" + fabric_mod_name + "_fabric_configfs;\n\n"
247
248 buf += "static struct se_node_acl *" + fabric_mod_name + "_make_nodeacl(\n"
249 buf += " struct se_portal_group *se_tpg,\n"
250 buf += " struct config_group *group,\n"
251 buf += " const char *name)\n"
252 buf += "{\n"
253 buf += " struct se_node_acl *se_nacl, *se_nacl_new;\n"
254 buf += " struct " + fabric_mod_name + "_nacl *nacl;\n"
255
256 if proto_ident == "FC" or proto_ident == "SAS":
257 buf += " u64 wwpn = 0;\n"
258
259 buf += " u32 nexus_depth;\n\n"
260 buf += " /* " + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
261 buf += " return ERR_PTR(-EINVAL); */\n"
262 buf += " se_nacl_new = " + fabric_mod_name + "_alloc_fabric_acl(se_tpg);\n"
263 buf += " if (!(se_nacl_new))\n"
264 buf += " return ERR_PTR(-ENOMEM);\n"
265 buf += "//#warning FIXME: Hardcoded nexus depth in " + fabric_mod_name + "_make_nodeacl()\n"
266 buf += " nexus_depth = 1;\n"
267 buf += " /*\n"
268 buf += " * se_nacl_new may be released by core_tpg_add_initiator_node_acl()\n"
269 buf += " * when converting a NodeACL from demo mode -> explict\n"
270 buf += " */\n"
271 buf += " se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,\n"
272 buf += " name, nexus_depth);\n"
273 buf += " if (IS_ERR(se_nacl)) {\n"
274 buf += " " + fabric_mod_name + "_release_fabric_acl(se_tpg, se_nacl_new);\n"
275 buf += " return se_nacl;\n"
276 buf += " }\n"
277 buf += " /*\n"
278 buf += " * Locate our struct " + fabric_mod_name + "_nacl and set the FC Nport WWPN\n"
279 buf += " */\n"
280 buf += " nacl = container_of(se_nacl, struct " + fabric_mod_name + "_nacl, se_node_acl);\n"
281
282 if proto_ident == "FC" or proto_ident == "SAS":
283 buf += " nacl->" + fabric_mod_init_port + "_wwpn = wwpn;\n"
284
285 buf += " /* " + fabric_mod_name + "_format_wwn(&nacl->" + fabric_mod_init_port + "_name[0], " + fabric_mod_name.upper() + "_NAMELEN, wwpn); */\n\n"
286 buf += " return se_nacl;\n"
287 buf += "}\n\n"
288 buf += "static void " + fabric_mod_name + "_drop_nodeacl(struct se_node_acl *se_acl)\n"
289 buf += "{\n"
290 buf += " struct " + fabric_mod_name + "_nacl *nacl = container_of(se_acl,\n"
291 buf += " struct " + fabric_mod_name + "_nacl, se_node_acl);\n"
292 buf += " kfree(nacl);\n"
293 buf += "}\n\n"
294
295 buf += "static struct se_portal_group *" + fabric_mod_name + "_make_tpg(\n"
296 buf += " struct se_wwn *wwn,\n"
297 buf += " struct config_group *group,\n"
298 buf += " const char *name)\n"
299 buf += "{\n"
300 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + "*" + fabric_mod_port + " = container_of(wwn,\n"
301 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n\n"
302 buf += " struct " + fabric_mod_name + "_tpg *tpg;\n"
303 buf += " unsigned long tpgt;\n"
304 buf += " int ret;\n\n"
305 buf += " if (strstr(name, \"tpgt_\") != name)\n"
306 buf += " return ERR_PTR(-EINVAL);\n"
307 buf += " if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > UINT_MAX)\n"
308 buf += " return ERR_PTR(-EINVAL);\n\n"
309 buf += " tpg = kzalloc(sizeof(struct " + fabric_mod_name + "_tpg), GFP_KERNEL);\n"
310 buf += " if (!(tpg)) {\n"
311 buf += " printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_tpg\");\n"
312 buf += " return ERR_PTR(-ENOMEM);\n"
313 buf += " }\n"
314 buf += " tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n"
315 buf += " tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n"
316 buf += " ret = core_tpg_register(&" + fabric_mod_name + "_fabric_configfs->tf_ops, wwn,\n"
317 buf += " &tpg->se_tpg, (void *)tpg,\n"
318 buf += " TRANSPORT_TPG_TYPE_NORMAL);\n"
319 buf += " if (ret < 0) {\n"
320 buf += " kfree(tpg);\n"
321 buf += " return NULL;\n"
322 buf += " }\n"
323 buf += " return &tpg->se_tpg;\n"
324 buf += "}\n\n"
325 buf += "static void " + fabric_mod_name + "_drop_tpg(struct se_portal_group *se_tpg)\n"
326 buf += "{\n"
327 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
328 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n\n"
329 buf += " core_tpg_deregister(se_tpg);\n"
330 buf += " kfree(tpg);\n"
331 buf += "}\n\n"
332
333 buf += "static struct se_wwn *" + fabric_mod_name + "_make_" + fabric_mod_port + "(\n"
334 buf += " struct target_fabric_configfs *tf,\n"
335 buf += " struct config_group *group,\n"
336 buf += " const char *name)\n"
337 buf += "{\n"
338 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + ";\n"
339
340 if proto_ident == "FC" or proto_ident == "SAS":
341 buf += " u64 wwpn = 0;\n\n"
342
343 buf += " /* if (" + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n"
344 buf += " return ERR_PTR(-EINVAL); */\n\n"
345 buf += " " + fabric_mod_port + " = kzalloc(sizeof(struct " + fabric_mod_name + "_" + fabric_mod_port + "), GFP_KERNEL);\n"
346 buf += " if (!(" + fabric_mod_port + ")) {\n"
347 buf += " printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_" + fabric_mod_port + "\");\n"
348 buf += " return ERR_PTR(-ENOMEM);\n"
349 buf += " }\n"
350
351 if proto_ident == "FC" or proto_ident == "SAS":
352 buf += " " + fabric_mod_port + "->" + fabric_mod_port + "_wwpn = wwpn;\n"
353
354 buf += " /* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "__NAMELEN, wwpn); */\n\n"
355 buf += " return &" + fabric_mod_port + "->" + fabric_mod_port + "_wwn;\n"
356 buf += "}\n\n"
357 buf += "static void " + fabric_mod_name + "_drop_" + fabric_mod_port + "(struct se_wwn *wwn)\n"
358 buf += "{\n"
359 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = container_of(wwn,\n"
360 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n"
361 buf += " kfree(" + fabric_mod_port + ");\n"
362 buf += "}\n\n"
363 buf += "static ssize_t " + fabric_mod_name + "_wwn_show_attr_version(\n"
364 buf += " struct target_fabric_configfs *tf,\n"
365 buf += " char *page)\n"
366 buf += "{\n"
367 buf += " return sprintf(page, \"" + fabric_mod_name.upper() + " fabric module %s on %s/%s\"\n"
368 buf += " \"on \"UTS_RELEASE\"\\n\", " + fabric_mod_name.upper() + "_VERSION, utsname()->sysname,\n"
369 buf += " utsname()->machine);\n"
370 buf += "}\n\n"
371 buf += "TF_WWN_ATTR_RO(" + fabric_mod_name + ", version);\n\n"
372 buf += "static struct configfs_attribute *" + fabric_mod_name + "_wwn_attrs[] = {\n"
373 buf += " &" + fabric_mod_name + "_wwn_version.attr,\n"
374 buf += " NULL,\n"
375 buf += "};\n\n"
376
377 buf += "static struct target_core_fabric_ops " + fabric_mod_name + "_ops = {\n"
378 buf += " .get_fabric_name = " + fabric_mod_name + "_get_fabric_name,\n"
379 buf += " .get_fabric_proto_ident = " + fabric_mod_name + "_get_fabric_proto_ident,\n"
380 buf += " .tpg_get_wwn = " + fabric_mod_name + "_get_fabric_wwn,\n"
381 buf += " .tpg_get_tag = " + fabric_mod_name + "_get_tag,\n"
382 buf += " .tpg_get_default_depth = " + fabric_mod_name + "_get_default_depth,\n"
383 buf += " .tpg_get_pr_transport_id = " + fabric_mod_name + "_get_pr_transport_id,\n"
384 buf += " .tpg_get_pr_transport_id_len = " + fabric_mod_name + "_get_pr_transport_id_len,\n"
385 buf += " .tpg_parse_pr_out_transport_id = " + fabric_mod_name + "_parse_pr_out_transport_id,\n"
386 buf += " .tpg_check_demo_mode = " + fabric_mod_name + "_check_false,\n"
387 buf += " .tpg_check_demo_mode_cache = " + fabric_mod_name + "_check_true,\n"
388 buf += " .tpg_check_demo_mode_write_protect = " + fabric_mod_name + "_check_true,\n"
389 buf += " .tpg_check_prod_mode_write_protect = " + fabric_mod_name + "_check_false,\n"
390 buf += " .tpg_alloc_fabric_acl = " + fabric_mod_name + "_alloc_fabric_acl,\n"
391 buf += " .tpg_release_fabric_acl = " + fabric_mod_name + "_release_fabric_acl,\n"
392 buf += " .tpg_get_inst_index = " + fabric_mod_name + "_tpg_get_inst_index,\n"
393 buf += " .release_cmd_to_pool = " + fabric_mod_name + "_release_cmd,\n"
394 buf += " .release_cmd_direct = " + fabric_mod_name + "_release_cmd,\n"
395 buf += " .shutdown_session = " + fabric_mod_name + "_shutdown_session,\n"
396 buf += " .close_session = " + fabric_mod_name + "_close_session,\n"
397 buf += " .stop_session = " + fabric_mod_name + "_stop_session,\n"
398 buf += " .fall_back_to_erl0 = " + fabric_mod_name + "_reset_nexus,\n"
399 buf += " .sess_logged_in = " + fabric_mod_name + "_sess_logged_in,\n"
400 buf += " .sess_get_index = " + fabric_mod_name + "_sess_get_index,\n"
401 buf += " .sess_get_initiator_sid = NULL,\n"
402 buf += " .write_pending = " + fabric_mod_name + "_write_pending,\n"
403 buf += " .write_pending_status = " + fabric_mod_name + "_write_pending_status,\n"
404 buf += " .set_default_node_attributes = " + fabric_mod_name + "_set_default_node_attrs,\n"
405 buf += " .get_task_tag = " + fabric_mod_name + "_get_task_tag,\n"
406 buf += " .get_cmd_state = " + fabric_mod_name + "_get_cmd_state,\n"
407 buf += " .new_cmd_failure = " + fabric_mod_name + "_new_cmd_failure,\n"
408 buf += " .queue_data_in = " + fabric_mod_name + "_queue_data_in,\n"
409 buf += " .queue_status = " + fabric_mod_name + "_queue_status,\n"
410 buf += " .queue_tm_rsp = " + fabric_mod_name + "_queue_tm_rsp,\n"
411 buf += " .get_fabric_sense_len = " + fabric_mod_name + "_get_fabric_sense_len,\n"
412 buf += " .set_fabric_sense_len = " + fabric_mod_name + "_set_fabric_sense_len,\n"
413 buf += " .is_state_remove = " + fabric_mod_name + "_is_state_remove,\n"
414 buf += " .pack_lun = " + fabric_mod_name + "_pack_lun,\n"
415 buf += " /*\n"
416 buf += " * Setup function pointers for generic logic in target_core_fabric_configfs.c\n"
417 buf += " */\n"
418 buf += " .fabric_make_wwn = " + fabric_mod_name + "_make_" + fabric_mod_port + ",\n"
419 buf += " .fabric_drop_wwn = " + fabric_mod_name + "_drop_" + fabric_mod_port + ",\n"
420 buf += " .fabric_make_tpg = " + fabric_mod_name + "_make_tpg,\n"
421 buf += " .fabric_drop_tpg = " + fabric_mod_name + "_drop_tpg,\n"
422 buf += " .fabric_post_link = NULL,\n"
423 buf += " .fabric_pre_unlink = NULL,\n"
424 buf += " .fabric_make_np = NULL,\n"
425 buf += " .fabric_drop_np = NULL,\n"
426 buf += " .fabric_make_nodeacl = " + fabric_mod_name + "_make_nodeacl,\n"
427 buf += " .fabric_drop_nodeacl = " + fabric_mod_name + "_drop_nodeacl,\n"
428 buf += "};\n\n"
429
430 buf += "static int " + fabric_mod_name + "_register_configfs(void)\n"
431 buf += "{\n"
432 buf += " struct target_fabric_configfs *fabric;\n"
433 buf += " int ret;\n\n"
434 buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + " fabric module %s on %s/%s\"\n"
435 buf += " \" on \"UTS_RELEASE\"\\n\"," + fabric_mod_name.upper() + "_VERSION, utsname()->sysname,\n"
436 buf += " utsname()->machine);\n"
437 buf += " /*\n"
438 buf += " * Register the top level struct config_item_type with TCM core\n"
439 buf += " */\n"
440 buf += " fabric = target_fabric_configfs_init(THIS_MODULE, \"" + fabric_mod_name[4:] + "\");\n"
441 buf += " if (!(fabric)) {\n"
442 buf += " printk(KERN_ERR \"target_fabric_configfs_init() failed\\n\");\n"
443 buf += " return -ENOMEM;\n"
444 buf += " }\n"
445 buf += " /*\n"
446 buf += " * Setup fabric->tf_ops from our local " + fabric_mod_name + "_ops\n"
447 buf += " */\n"
448 buf += " fabric->tf_ops = " + fabric_mod_name + "_ops;\n"
449 buf += " /*\n"
450 buf += " * Setup default attribute lists for various fabric->tf_cit_tmpl\n"
451 buf += " */\n"
452 buf += " TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = " + fabric_mod_name + "_wwn_attrs;\n"
453 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = NULL;\n"
454 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;\n"
455 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;\n"
456 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;\n"
457 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;\n"
458 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;\n"
459 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;\n"
460 buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;\n"
461 buf += " /*\n"
462 buf += " * Register the fabric for use within TCM\n"
463 buf += " */\n"
464 buf += " ret = target_fabric_configfs_register(fabric);\n"
465 buf += " if (ret < 0) {\n"
466 buf += " printk(KERN_ERR \"target_fabric_configfs_register() failed\"\n"
467 buf += " \" for " + fabric_mod_name.upper() + "\\n\");\n"
468 buf += " return ret;\n"
469 buf += " }\n"
470 buf += " /*\n"
471 buf += " * Setup our local pointer to *fabric\n"
472 buf += " */\n"
473 buf += " " + fabric_mod_name + "_fabric_configfs = fabric;\n"
474 buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + "[0] - Set fabric -> " + fabric_mod_name + "_fabric_configfs\\n\");\n"
475 buf += " return 0;\n"
476 buf += "};\n\n"
477 buf += "static void " + fabric_mod_name + "_deregister_configfs(void)\n"
478 buf += "{\n"
479 buf += " if (!(" + fabric_mod_name + "_fabric_configfs))\n"
480 buf += " return;\n\n"
481 buf += " target_fabric_configfs_deregister(" + fabric_mod_name + "_fabric_configfs);\n"
482 buf += " " + fabric_mod_name + "_fabric_configfs = NULL;\n"
483 buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + "[0] - Cleared " + fabric_mod_name + "_fabric_configfs\\n\");\n"
484 buf += "};\n\n"
485
486 buf += "static int __init " + fabric_mod_name + "_init(void)\n"
487 buf += "{\n"
488 buf += " int ret;\n\n"
489 buf += " ret = " + fabric_mod_name + "_register_configfs();\n"
490 buf += " if (ret < 0)\n"
491 buf += " return ret;\n\n"
492 buf += " return 0;\n"
493 buf += "};\n\n"
494 buf += "static void " + fabric_mod_name + "_exit(void)\n"
495 buf += "{\n"
496 buf += " " + fabric_mod_name + "_deregister_configfs();\n"
497 buf += "};\n\n"
498
499 buf += "#ifdef MODULE\n"
500 buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n"
501 buf += "MODULE_LICENSE(\"GPL\");\n"
502 buf += "module_init(" + fabric_mod_name + "_init);\n"
503 buf += "module_exit(" + fabric_mod_name + "_exit);\n"
504 buf += "#endif\n"
505
506 ret = p.write(buf)
507 if ret:
508 tcm_mod_err("Unable to write f: " + f)
509
510 p.close()
511
512 return
513
514def tcm_mod_scan_fabric_ops(tcm_dir):
515
516 fabric_ops_api = tcm_dir + "include/target/target_core_fabric_ops.h"
517
518 print "Using tcm_mod_scan_fabric_ops: " + fabric_ops_api
519 process_fo = 0;
520
521 p = open(fabric_ops_api, 'r')
522
523 line = p.readline()
524 while line:
525 if process_fo == 0 and re.search('struct target_core_fabric_ops {', line):
526 line = p.readline()
527 continue
528
529 if process_fo == 0:
530 process_fo = 1;
531 line = p.readline()
532 # Search for function pointer
533 if not re.search('\(\*', line):
534 continue
535
536 fabric_ops.append(line.rstrip())
537 continue
538
539 line = p.readline()
540 # Search for function pointer
541 if not re.search('\(\*', line):
542 continue
543
544 fabric_ops.append(line.rstrip())
545
546 p.close()
547 return
548
549def tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir_var, fabric_mod_name):
550 buf = ""
551 bufi = ""
552
553 f = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.c"
554 print "Writing file: " + f
555
556 p = open(f, 'w')
557 if not p:
558 tcm_mod_err("Unable to open file: " + f)
559
560 fi = fabric_mod_dir_var + "/" + fabric_mod_name + "_fabric.h"
561 print "Writing file: " + fi
562
563 pi = open(fi, 'w')
564 if not pi:
565 tcm_mod_err("Unable to open file: " + fi)
566
567 buf = "#include <linux/slab.h>\n"
568 buf += "#include <linux/kthread.h>\n"
569 buf += "#include <linux/types.h>\n"
570 buf += "#include <linux/list.h>\n"
571 buf += "#include <linux/types.h>\n"
572 buf += "#include <linux/string.h>\n"
573 buf += "#include <linux/ctype.h>\n"
574 buf += "#include <asm/unaligned.h>\n"
575 buf += "#include <scsi/scsi.h>\n"
576 buf += "#include <scsi/scsi_host.h>\n"
577 buf += "#include <scsi/scsi_device.h>\n"
578 buf += "#include <scsi/scsi_cmnd.h>\n"
579 buf += "#include <scsi/libfc.h>\n\n"
580 buf += "#include <target/target_core_base.h>\n"
581 buf += "#include <target/target_core_transport.h>\n"
582 buf += "#include <target/target_core_fabric_ops.h>\n"
583 buf += "#include <target/target_core_fabric_lib.h>\n"
584 buf += "#include <target/target_core_device.h>\n"
585 buf += "#include <target/target_core_tpg.h>\n"
586 buf += "#include <target/target_core_configfs.h>\n"
587 buf += "#include <" + fabric_mod_name + "_base.h>\n"
588 buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n"
589
590 buf += "int " + fabric_mod_name + "_check_true(struct se_portal_group *se_tpg)\n"
591 buf += "{\n"
592 buf += " return 1;\n"
593 buf += "}\n\n"
594 bufi += "int " + fabric_mod_name + "_check_true(struct se_portal_group *);\n"
595
596 buf += "int " + fabric_mod_name + "_check_false(struct se_portal_group *se_tpg)\n"
597 buf += "{\n"
598 buf += " return 0;\n"
599 buf += "}\n\n"
600 bufi += "int " + fabric_mod_name + "_check_false(struct se_portal_group *);\n"
601
602 total_fabric_ops = len(fabric_ops)
603 i = 0
604
605 while i < total_fabric_ops:
606 fo = fabric_ops[i]
607 i += 1
608# print "fabric_ops: " + fo
609
610 if re.search('get_fabric_name', fo):
611 buf += "char *" + fabric_mod_name + "_get_fabric_name(void)\n"
612 buf += "{\n"
613 buf += " return \"" + fabric_mod_name[4:] + "\";\n"
614 buf += "}\n\n"
615 bufi += "char *" + fabric_mod_name + "_get_fabric_name(void);\n"
616 continue
617
618 if re.search('get_fabric_proto_ident', fo):
619 buf += "u8 " + fabric_mod_name + "_get_fabric_proto_ident(struct se_portal_group *se_tpg)\n"
620 buf += "{\n"
621 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
622 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
623 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n"
624 buf += " u8 proto_id;\n\n"
625 buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n"
626 if proto_ident == "FC":
627 buf += " case SCSI_PROTOCOL_FCP:\n"
628 buf += " default:\n"
629 buf += " proto_id = fc_get_fabric_proto_ident(se_tpg);\n"
630 buf += " break;\n"
631 elif proto_ident == "SAS":
632 buf += " case SCSI_PROTOCOL_SAS:\n"
633 buf += " default:\n"
634 buf += " proto_id = sas_get_fabric_proto_ident(se_tpg);\n"
635 buf += " break;\n"
636 elif proto_ident == "iSCSI":
637 buf += " case SCSI_PROTOCOL_ISCSI:\n"
638 buf += " default:\n"
639 buf += " proto_id = iscsi_get_fabric_proto_ident(se_tpg);\n"
640 buf += " break;\n"
641
642 buf += " }\n\n"
643 buf += " return proto_id;\n"
644 buf += "}\n\n"
645 bufi += "u8 " + fabric_mod_name + "_get_fabric_proto_ident(struct se_portal_group *);\n"
646
647 if re.search('get_wwn', fo):
648 buf += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *se_tpg)\n"
649 buf += "{\n"
650 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
651 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
652 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n\n"
653 buf += " return &" + fabric_mod_port + "->" + fabric_mod_port + "_name[0];\n"
654 buf += "}\n\n"
655 bufi += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *);\n"
656
657 if re.search('get_tag', fo):
658 buf += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *se_tpg)\n"
659 buf += "{\n"
660 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
661 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
662 buf += " return tpg->" + fabric_mod_port + "_tpgt;\n"
663 buf += "}\n\n"
664 bufi += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *);\n"
665
666 if re.search('get_default_depth', fo):
667 buf += "u32 " + fabric_mod_name + "_get_default_depth(struct se_portal_group *se_tpg)\n"
668 buf += "{\n"
669 buf += " return 1;\n"
670 buf += "}\n\n"
671 bufi += "u32 " + fabric_mod_name + "_get_default_depth(struct se_portal_group *);\n"
672
673 if re.search('get_pr_transport_id\)\(', fo):
674 buf += "u32 " + fabric_mod_name + "_get_pr_transport_id(\n"
675 buf += " struct se_portal_group *se_tpg,\n"
676 buf += " struct se_node_acl *se_nacl,\n"
677 buf += " struct t10_pr_registration *pr_reg,\n"
678 buf += " int *format_code,\n"
679 buf += " unsigned char *buf)\n"
680 buf += "{\n"
681 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
682 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
683 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n"
684 buf += " int ret = 0;\n\n"
685 buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n"
686 if proto_ident == "FC":
687 buf += " case SCSI_PROTOCOL_FCP:\n"
688 buf += " default:\n"
689 buf += " ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n"
690 buf += " format_code, buf);\n"
691 buf += " break;\n"
692 elif proto_ident == "SAS":
693 buf += " case SCSI_PROTOCOL_SAS:\n"
694 buf += " default:\n"
695 buf += " ret = sas_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n"
696 buf += " format_code, buf);\n"
697 buf += " break;\n"
698 elif proto_ident == "iSCSI":
699 buf += " case SCSI_PROTOCOL_ISCSI:\n"
700 buf += " default:\n"
701 buf += " ret = iscsi_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n"
702 buf += " format_code, buf);\n"
703 buf += " break;\n"
704
705 buf += " }\n\n"
706 buf += " return ret;\n"
707 buf += "}\n\n"
708 bufi += "u32 " + fabric_mod_name + "_get_pr_transport_id(struct se_portal_group *,\n"
709 bufi += " struct se_node_acl *, struct t10_pr_registration *,\n"
710 bufi += " int *, unsigned char *);\n"
711
712 if re.search('get_pr_transport_id_len\)\(', fo):
713 buf += "u32 " + fabric_mod_name + "_get_pr_transport_id_len(\n"
714 buf += " struct se_portal_group *se_tpg,\n"
715 buf += " struct se_node_acl *se_nacl,\n"
716 buf += " struct t10_pr_registration *pr_reg,\n"
717 buf += " int *format_code)\n"
718 buf += "{\n"
719 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
720 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
721 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n"
722 buf += " int ret = 0;\n\n"
723 buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n"
724 if proto_ident == "FC":
725 buf += " case SCSI_PROTOCOL_FCP:\n"
726 buf += " default:\n"
727 buf += " ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n"
728 buf += " format_code);\n"
729 buf += " break;\n"
730 elif proto_ident == "SAS":
731 buf += " case SCSI_PROTOCOL_SAS:\n"
732 buf += " default:\n"
733 buf += " ret = sas_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n"
734 buf += " format_code);\n"
735 buf += " break;\n"
736 elif proto_ident == "iSCSI":
737 buf += " case SCSI_PROTOCOL_ISCSI:\n"
738 buf += " default:\n"
739 buf += " ret = iscsi_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n"
740 buf += " format_code);\n"
741 buf += " break;\n"
742
743
744 buf += " }\n\n"
745 buf += " return ret;\n"
746 buf += "}\n\n"
747 bufi += "u32 " + fabric_mod_name + "_get_pr_transport_id_len(struct se_portal_group *,\n"
748 bufi += " struct se_node_acl *, struct t10_pr_registration *,\n"
749 bufi += " int *);\n"
750
751 if re.search('parse_pr_out_transport_id\)\(', fo):
752 buf += "char *" + fabric_mod_name + "_parse_pr_out_transport_id(\n"
753 buf += " struct se_portal_group *se_tpg,\n"
754 buf += " const char *buf,\n"
755 buf += " u32 *out_tid_len,\n"
756 buf += " char **port_nexus_ptr)\n"
757 buf += "{\n"
758 buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n"
759 buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n"
760 buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n"
761 buf += " char *tid = NULL;\n\n"
762 buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n"
763 if proto_ident == "FC":
764 buf += " case SCSI_PROTOCOL_FCP:\n"
765 buf += " default:\n"
766 buf += " tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n"
767 buf += " port_nexus_ptr);\n"
768 elif proto_ident == "SAS":
769 buf += " case SCSI_PROTOCOL_SAS:\n"
770 buf += " default:\n"
771 buf += " tid = sas_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n"
772 buf += " port_nexus_ptr);\n"
773 elif proto_ident == "iSCSI":
774 buf += " case SCSI_PROTOCOL_ISCSI:\n"
775 buf += " default:\n"
776 buf += " tid = iscsi_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n"
777 buf += " port_nexus_ptr);\n"
778
779 buf += " }\n\n"
780 buf += " return tid;\n"
781 buf += "}\n\n"
782 bufi += "char *" + fabric_mod_name + "_parse_pr_out_transport_id(struct se_portal_group *,\n"
783 bufi += " const char *, u32 *, char **);\n"
784
785 if re.search('alloc_fabric_acl\)\(', fo):
786 buf += "struct se_node_acl *" + fabric_mod_name + "_alloc_fabric_acl(struct se_portal_group *se_tpg)\n"
787 buf += "{\n"
788 buf += " struct " + fabric_mod_name + "_nacl *nacl;\n\n"
789 buf += " nacl = kzalloc(sizeof(struct " + fabric_mod_name + "_nacl), GFP_KERNEL);\n"
790 buf += " if (!(nacl)) {\n"
791 buf += " printk(KERN_ERR \"Unable to alocate struct " + fabric_mod_name + "_nacl\\n\");\n"
792 buf += " return NULL;\n"
793 buf += " }\n\n"
794 buf += " return &nacl->se_node_acl;\n"
795 buf += "}\n\n"
796 bufi += "struct se_node_acl *" + fabric_mod_name + "_alloc_fabric_acl(struct se_portal_group *);\n"
797
798 if re.search('release_fabric_acl\)\(', fo):
799 buf += "void " + fabric_mod_name + "_release_fabric_acl(\n"
800 buf += " struct se_portal_group *se_tpg,\n"
801 buf += " struct se_node_acl *se_nacl)\n"
802 buf += "{\n"
803 buf += " struct " + fabric_mod_name + "_nacl *nacl = container_of(se_nacl,\n"
804 buf += " struct " + fabric_mod_name + "_nacl, se_node_acl);\n"
805 buf += " kfree(nacl);\n"
806 buf += "}\n\n"
807 bufi += "void " + fabric_mod_name + "_release_fabric_acl(struct se_portal_group *,\n"
808 bufi += " struct se_node_acl *);\n"
809
810 if re.search('tpg_get_inst_index\)\(', fo):
811 buf += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *se_tpg)\n"
812 buf += "{\n"
813 buf += " return 1;\n"
814 buf += "}\n\n"
815 bufi += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *);\n"
816
817 if re.search('release_cmd_to_pool', fo):
818 buf += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *se_cmd)\n"
819 buf += "{\n"
820 buf += " return;\n"
821 buf += "}\n\n"
822 bufi += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *);\n"
823
824 if re.search('shutdown_session\)\(', fo):
825 buf += "int " + fabric_mod_name + "_shutdown_session(struct se_session *se_sess)\n"
826 buf += "{\n"
827 buf += " return 0;\n"
828 buf += "}\n\n"
829 bufi += "int " + fabric_mod_name + "_shutdown_session(struct se_session *);\n"
830
831 if re.search('close_session\)\(', fo):
832 buf += "void " + fabric_mod_name + "_close_session(struct se_session *se_sess)\n"
833 buf += "{\n"
834 buf += " return;\n"
835 buf += "}\n\n"
836 bufi += "void " + fabric_mod_name + "_close_session(struct se_session *);\n"
837
838 if re.search('stop_session\)\(', fo):
839 buf += "void " + fabric_mod_name + "_stop_session(struct se_session *se_sess, int sess_sleep , int conn_sleep)\n"
840 buf += "{\n"
841 buf += " return;\n"
842 buf += "}\n\n"
843 bufi += "void " + fabric_mod_name + "_stop_session(struct se_session *, int, int);\n"
844
845 if re.search('fall_back_to_erl0\)\(', fo):
846 buf += "void " + fabric_mod_name + "_reset_nexus(struct se_session *se_sess)\n"
847 buf += "{\n"
848 buf += " return;\n"
849 buf += "}\n\n"
850 bufi += "void " + fabric_mod_name + "_reset_nexus(struct se_session *);\n"
851
852 if re.search('sess_logged_in\)\(', fo):
853 buf += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *se_sess)\n"
854 buf += "{\n"
855 buf += " return 0;\n"
856 buf += "}\n\n"
857 bufi += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *);\n"
858
859 if re.search('sess_get_index\)\(', fo):
860 buf += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *se_sess)\n"
861 buf += "{\n"
862 buf += " return 0;\n"
863 buf += "}\n\n"
864 bufi += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *);\n"
865
866 if re.search('write_pending\)\(', fo):
867 buf += "int " + fabric_mod_name + "_write_pending(struct se_cmd *se_cmd)\n"
868 buf += "{\n"
869 buf += " return 0;\n"
870 buf += "}\n\n"
871 bufi += "int " + fabric_mod_name + "_write_pending(struct se_cmd *);\n"
872
873 if re.search('write_pending_status\)\(', fo):
874 buf += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *se_cmd)\n"
875 buf += "{\n"
876 buf += " return 0;\n"
877 buf += "}\n\n"
878 bufi += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *);\n"
879
880 if re.search('set_default_node_attributes\)\(', fo):
881 buf += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *nacl)\n"
882 buf += "{\n"
883 buf += " return;\n"
884 buf += "}\n\n"
885 bufi += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *);\n"
886
887 if re.search('get_task_tag\)\(', fo):
888 buf += "u32 " + fabric_mod_name + "_get_task_tag(struct se_cmd *se_cmd)\n"
889 buf += "{\n"
890 buf += " return 0;\n"
891 buf += "}\n\n"
892 bufi += "u32 " + fabric_mod_name + "_get_task_tag(struct se_cmd *);\n"
893
894 if re.search('get_cmd_state\)\(', fo):
895 buf += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *se_cmd)\n"
896 buf += "{\n"
897 buf += " return 0;\n"
898 buf += "}\n\n"
899 bufi += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *);\n"
900
901 if re.search('new_cmd_failure\)\(', fo):
902 buf += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *se_cmd)\n"
903 buf += "{\n"
904 buf += " return;\n"
905 buf += "}\n\n"
906 bufi += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *);\n"
907
908 if re.search('queue_data_in\)\(', fo):
909 buf += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *se_cmd)\n"
910 buf += "{\n"
911 buf += " return 0;\n"
912 buf += "}\n\n"
913 bufi += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *);\n"
914
915 if re.search('queue_status\)\(', fo):
916 buf += "int " + fabric_mod_name + "_queue_status(struct se_cmd *se_cmd)\n"
917 buf += "{\n"
918 buf += " return 0;\n"
919 buf += "}\n\n"
920 bufi += "int " + fabric_mod_name + "_queue_status(struct se_cmd *);\n"
921
922 if re.search('queue_tm_rsp\)\(', fo):
923 buf += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n"
924 buf += "{\n"
925 buf += " return 0;\n"
926 buf += "}\n\n"
927 bufi += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n"
928
929 if re.search('get_fabric_sense_len\)\(', fo):
930 buf += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void)\n"
931 buf += "{\n"
932 buf += " return 0;\n"
933 buf += "}\n\n"
934 bufi += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void);\n"
935
936 if re.search('set_fabric_sense_len\)\(', fo):
937 buf += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)\n"
938 buf += "{\n"
939 buf += " return 0;\n"
940 buf += "}\n\n"
941 bufi += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *, u32);\n"
942
943 if re.search('is_state_remove\)\(', fo):
944 buf += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *se_cmd)\n"
945 buf += "{\n"
946 buf += " return 0;\n"
947 buf += "}\n\n"
948 bufi += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *);\n"
949
950 if re.search('pack_lun\)\(', fo):
951 buf += "u64 " + fabric_mod_name + "_pack_lun(unsigned int lun)\n"
952 buf += "{\n"
953 buf += " WARN_ON(lun >= 256);\n"
954 buf += " /* Caller wants this byte-swapped */\n"
955 buf += " return cpu_to_le64((lun & 0xff) << 8);\n"
956 buf += "}\n\n"
957 bufi += "u64 " + fabric_mod_name + "_pack_lun(unsigned int);\n"
958
959
960 ret = p.write(buf)
961 if ret:
962 tcm_mod_err("Unable to write f: " + f)
963
964 p.close()
965
966 ret = pi.write(bufi)
967 if ret:
968 tcm_mod_err("Unable to write fi: " + fi)
969
970 pi.close()
971 return
972
973def tcm_mod_build_kbuild(fabric_mod_dir_var, fabric_mod_name):
974
975 buf = ""
976 f = fabric_mod_dir_var + "/Kbuild"
977 print "Writing file: " + f
978
979 p = open(f, 'w')
980 if not p:
981 tcm_mod_err("Unable to open file: " + f)
982
983 buf = "EXTRA_CFLAGS += -I$(srctree)/drivers/target/ -I$(srctree)/include/ -I$(srctree)/drivers/scsi/ -I$(srctree)/include/scsi/ -I$(srctree)/drivers/target/" + fabric_mod_name + "\n\n"
984 buf += fabric_mod_name + "-objs := " + fabric_mod_name + "_fabric.o \\\n"
985 buf += " " + fabric_mod_name + "_configfs.o\n"
986 buf += "obj-$(CONFIG_" + fabric_mod_name.upper() + ") += " + fabric_mod_name + ".o\n"
987
988 ret = p.write(buf)
989 if ret:
990 tcm_mod_err("Unable to write f: " + f)
991
992 p.close()
993 return
994
995def tcm_mod_build_kconfig(fabric_mod_dir_var, fabric_mod_name):
996
997 buf = ""
998 f = fabric_mod_dir_var + "/Kconfig"
999 print "Writing file: " + f
1000
1001 p = open(f, 'w')
1002 if not p:
1003 tcm_mod_err("Unable to open file: " + f)
1004
1005 buf = "config " + fabric_mod_name.upper() + "\n"
1006 buf += " tristate \"" + fabric_mod_name.upper() + " fabric module\"\n"
1007 buf += " depends on TARGET_CORE && CONFIGFS_FS\n"
1008 buf += " default n\n"
1009 buf += " ---help---\n"
1010 buf += " Say Y here to enable the " + fabric_mod_name.upper() + " fabric module\n"
1011
1012 ret = p.write(buf)
1013 if ret:
1014 tcm_mod_err("Unable to write f: " + f)
1015
1016 p.close()
1017 return
1018
1019def tcm_mod_add_kbuild(tcm_dir, fabric_mod_name):
1020 buf = "obj-$(CONFIG_" + fabric_mod_name.upper() + ") += " + fabric_mod_name.lower() + "/\n"
1021 kbuild = tcm_dir + "/drivers/target/Kbuild"
1022
1023 f = open(kbuild, 'a')
1024 f.write(buf)
1025 f.close()
1026 return
1027
1028def tcm_mod_add_kconfig(tcm_dir, fabric_mod_name):
1029 buf = "source \"drivers/target/" + fabric_mod_name.lower() + "/Kconfig\"\n"
1030 kconfig = tcm_dir + "/drivers/target/Kconfig"
1031
1032 f = open(kconfig, 'a')
1033 f.write(buf)
1034 f.close()
1035 return
1036
1037def main(modname, proto_ident):
1038# proto_ident = "FC"
1039# proto_ident = "SAS"
1040# proto_ident = "iSCSI"
1041
1042 tcm_dir = os.getcwd();
1043 tcm_dir += "/../../"
1044 print "tcm_dir: " + tcm_dir
1045 fabric_mod_name = modname
1046 fabric_mod_dir = tcm_dir + "drivers/target/" + fabric_mod_name
1047 print "Set fabric_mod_name: " + fabric_mod_name
1048 print "Set fabric_mod_dir: " + fabric_mod_dir
1049 print "Using proto_ident: " + proto_ident
1050
1051 if proto_ident != "FC" and proto_ident != "SAS" and proto_ident != "iSCSI":
1052 print "Unsupported proto_ident: " + proto_ident
1053 sys.exit(1)
1054
1055 ret = tcm_mod_create_module_subdir(fabric_mod_dir)
1056 if ret:
1057 print "tcm_mod_create_module_subdir() failed because module already exists!"
1058 sys.exit(1)
1059
1060 tcm_mod_build_base_includes(proto_ident, fabric_mod_dir, fabric_mod_name)
1061 tcm_mod_scan_fabric_ops(tcm_dir)
1062 tcm_mod_dump_fabric_ops(proto_ident, fabric_mod_dir, fabric_mod_name)
1063 tcm_mod_build_configfs(proto_ident, fabric_mod_dir, fabric_mod_name)
1064 tcm_mod_build_kbuild(fabric_mod_dir, fabric_mod_name)
1065 tcm_mod_build_kconfig(fabric_mod_dir, fabric_mod_name)
1066
1067 input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Kbuild..? [yes,no]: ")
1068 if input == "yes" or input == "y":
1069 tcm_mod_add_kbuild(tcm_dir, fabric_mod_name)
1070
1071 input = raw_input("Would you like to add " + fabric_mod_name + "to drivers/target/Kconfig..? [yes,no]: ")
1072 if input == "yes" or input == "y":
1073 tcm_mod_add_kconfig(tcm_dir, fabric_mod_name)
1074
1075 return
1076
1077parser = optparse.OptionParser()
1078parser.add_option('-m', '--modulename', help='Module name', dest='modname',
1079 action='store', nargs=1, type='string')
1080parser.add_option('-p', '--protoident', help='Protocol Ident', dest='protoident',
1081 action='store', nargs=1, type='string')
1082
1083(opts, args) = parser.parse_args()
1084
1085mandatories = ['modname', 'protoident']
1086for m in mandatories:
1087 if not opts.__dict__[m]:
1088 print "mandatory option is missing\n"
1089 parser.print_help()
1090 exit(-1)
1091
1092if __name__ == "__main__":
1093
1094 main(str(opts.modname), opts.protoident)
diff --git a/Documentation/target/tcm_mod_builder.txt b/Documentation/target/tcm_mod_builder.txt
new file mode 100644
index 000000000000..84533d8e747f
--- /dev/null
+++ b/Documentation/target/tcm_mod_builder.txt
@@ -0,0 +1,145 @@
1>>>>>>>>>> The TCM v4 fabric module script generator <<<<<<<<<<
2
3Greetings all,
4
5This document is intended to be a mini-HOWTO for using the tcm_mod_builder.py
6script to generate a brand new functional TCM v4 fabric .ko module of your very own,
7that once built can be immediately be loaded to start access the new TCM/ConfigFS
8fabric skeleton, by simply using:
9
10 modprobe $TCM_NEW_MOD
11 mkdir -p /sys/kernel/config/target/$TCM_NEW_MOD
12
13This script will create a new drivers/target/$TCM_NEW_MOD/, and will do the following
14
15 *) Generate new API callers for drivers/target/target_core_fabric_configs.c logic
16 ->make_nodeacl(), ->drop_nodeacl(), ->make_tpg(), ->drop_tpg()
17 ->make_wwn(), ->drop_wwn(). These are created into $TCM_NEW_MOD/$TCM_NEW_MOD_configfs.c
18 *) Generate basic infrastructure for loading/unloading LKMs and TCM/ConfigFS fabric module
19 using a skeleton struct target_core_fabric_ops API template.
20 *) Based on user defined T10 Proto_Ident for the new fabric module being built,
21 the TransportID / Initiator and Target WWPN related handlers for
22 SPC-3 persistent reservation are automatically generated in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c
23 using drivers/target/target_core_fabric_lib.c logic.
24 *) NOP API calls for all other Data I/O path and fabric dependent attribute logic
25 in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c
26
27tcm_mod_builder.py depends upon the mandatory '-p $PROTO_IDENT' and '-m
28$FABRIC_MOD_name' parameters, and actually running the script looks like:
29
30target:/mnt/sdb/lio-core-2.6.git/Documentation/target# python tcm_mod_builder.py -p iSCSI -m tcm_nab5000
31tcm_dir: /mnt/sdb/lio-core-2.6.git/Documentation/target/../../
32Set fabric_mod_name: tcm_nab5000
33Set fabric_mod_dir:
34/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000
35Using proto_ident: iSCSI
36Creating fabric_mod_dir:
37/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000
38Writing file:
39/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_base.h
40Using tcm_mod_scan_fabric_ops:
41/mnt/sdb/lio-core-2.6.git/Documentation/target/../../include/target/target_core_fabric_ops.h
42Writing file:
43/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.c
44Writing file:
45/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_fabric.h
46Writing file:
47/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/tcm_nab5000_configfs.c
48Writing file:
49/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kbuild
50Writing file:
51/mnt/sdb/lio-core-2.6.git/Documentation/target/../../drivers/target/tcm_nab5000/Kconfig
52Would you like to add tcm_nab5000to drivers/target/Kbuild..? [yes,no]: yes
53Would you like to add tcm_nab5000to drivers/target/Kconfig..? [yes,no]: yes
54
55At the end of tcm_mod_builder.py. the script will ask to add the following
56line to drivers/target/Kbuild:
57
58 obj-$(CONFIG_TCM_NAB5000) += tcm_nab5000/
59
60and the same for drivers/target/Kconfig:
61
62 source "drivers/target/tcm_nab5000/Kconfig"
63
64*) Run 'make menuconfig' and select the new CONFIG_TCM_NAB5000 item:
65
66 <M> TCM_NAB5000 fabric module
67
68*) Build using 'make modules', once completed you will have:
69
70target:/mnt/sdb/lio-core-2.6.git# ls -la drivers/target/tcm_nab5000/
71total 1348
72drwxr-xr-x 2 root root 4096 2010-10-05 03:23 .
73drwxr-xr-x 9 root root 4096 2010-10-05 03:22 ..
74-rw-r--r-- 1 root root 282 2010-10-05 03:22 Kbuild
75-rw-r--r-- 1 root root 171 2010-10-05 03:22 Kconfig
76-rw-r--r-- 1 root root 49 2010-10-05 03:23 modules.order
77-rw-r--r-- 1 root root 738 2010-10-05 03:22 tcm_nab5000_base.h
78-rw-r--r-- 1 root root 9096 2010-10-05 03:22 tcm_nab5000_configfs.c
79-rw-r--r-- 1 root root 191200 2010-10-05 03:23 tcm_nab5000_configfs.o
80-rw-r--r-- 1 root root 40504 2010-10-05 03:23 .tcm_nab5000_configfs.o.cmd
81-rw-r--r-- 1 root root 5414 2010-10-05 03:22 tcm_nab5000_fabric.c
82-rw-r--r-- 1 root root 2016 2010-10-05 03:22 tcm_nab5000_fabric.h
83-rw-r--r-- 1 root root 190932 2010-10-05 03:23 tcm_nab5000_fabric.o
84-rw-r--r-- 1 root root 40713 2010-10-05 03:23 .tcm_nab5000_fabric.o.cmd
85-rw-r--r-- 1 root root 401861 2010-10-05 03:23 tcm_nab5000.ko
86-rw-r--r-- 1 root root 265 2010-10-05 03:23 .tcm_nab5000.ko.cmd
87-rw-r--r-- 1 root root 459 2010-10-05 03:23 tcm_nab5000.mod.c
88-rw-r--r-- 1 root root 23896 2010-10-05 03:23 tcm_nab5000.mod.o
89-rw-r--r-- 1 root root 22655 2010-10-05 03:23 .tcm_nab5000.mod.o.cmd
90-rw-r--r-- 1 root root 379022 2010-10-05 03:23 tcm_nab5000.o
91-rw-r--r-- 1 root root 211 2010-10-05 03:23 .tcm_nab5000.o.cmd
92
93*) Load the new module, create a lun_0 configfs group, and add new TCM Core
94 IBLOCK backstore symlink to port:
95
96target:/mnt/sdb/lio-core-2.6.git# insmod drivers/target/tcm_nab5000.ko
97target:/mnt/sdb/lio-core-2.6.git# mkdir -p /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0
98target:/mnt/sdb/lio-core-2.6.git# cd /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0/
99target:/sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0# ln -s /sys/kernel/config/target/core/iblock_0/lvm_test0 nab5000_port
100
101target:/sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0# cd -
102target:/mnt/sdb/lio-core-2.6.git# tree /sys/kernel/config/target/nab5000/
103/sys/kernel/config/target/nab5000/
104|-- discovery_auth
105|-- iqn.foo
106| `-- tpgt_1
107| |-- acls
108| |-- attrib
109| |-- lun
110| | `-- lun_0
111| | |-- alua_tg_pt_gp
112| | |-- alua_tg_pt_offline
113| | |-- alua_tg_pt_status
114| | |-- alua_tg_pt_write_md
115| | `-- nab5000_port -> ../../../../../../target/core/iblock_0/lvm_test0
116| |-- np
117| `-- param
118`-- version
119
120target:/mnt/sdb/lio-core-2.6.git# lsmod
121Module Size Used by
122tcm_nab5000 3935 4
123iscsi_target_mod 193211 0
124target_core_stgt 8090 0
125target_core_pscsi 11122 1
126target_core_file 9172 2
127target_core_iblock 9280 1
128target_core_mod 228575 31
129tcm_nab5000,iscsi_target_mod,target_core_stgt,target_core_pscsi,target_core_file,target_core_iblock
130libfc 73681 0
131scsi_debug 56265 0
132scsi_tgt 8666 1 target_core_stgt
133configfs 20644 2 target_core_mod
134
135----------------------------------------------------------------------
136
137Future TODO items:
138
139 *) Add more T10 proto_idents
140 *) Make tcm_mod_dump_fabric_ops() smarter and generate function pointer
141 defs directly from include/target/target_core_fabric_ops.h:struct target_core_fabric_ops
142 structure members.
143
144October 5th, 2010
145Nicholas A. Bellinger <nab@linux-iscsi.org>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 10:33:15 -0500