From 9fb104beb2512e0243d182620aa00be2c5313ca2 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 30 Aug 2010 08:10:04 +0000 Subject: [RFC 21/22] tcm: Add Kbuild and Kconfig for drivers/target, Documentation/target/tcm_mod_builder.py Add TCM Kbuild and Kconfig files and update drivers/ to pick up drivers/target. Add Docmentation/target/ for tcm_mod_builder.py script for generating new TCM v4 fabric modules functional ConfigFS skeletons. Signed-off-by: Nicholas A. Bellinger --- Documentation/target/tcm_mod_builder.py | 1039 ++++++++++++++++++++++++++++++ Documentation/target/tcm_mod_builder.txt | 138 ++++ drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/target/Kbuild | 27 + drivers/target/Kconfig | 34 + 6 files changed, 1241 insertions(+), 0 deletions(-) create mode 100755 Documentation/target/tcm_mod_builder.py create mode 100644 Documentation/target/tcm_mod_builder.txt create mode 100644 drivers/target/Kbuild create mode 100644 drivers/target/Kconfig diff --git a/Documentation/target/tcm_mod_builder.py b/Documentation/target/tcm_mod_builder.py new file mode 100755 index 0000000..66e63c5 --- /dev/null +++ b/Documentation/target/tcm_mod_builder.py @@ -0,0 +1,1039 @@ +#!/usr/bin/python +# The TCM v4 multi-protocol fabric module generation script for drivers/target/$NEW_MOD +# +# Copyright (c) 2010 Rising Tide Systems +# Copyright (c) 2010 Linux-iSCSI.org +# +# Author: nab@kernel.org +# +import os, sys +import subprocess as sub +import string +import re + +#global tcm_dir +#global fabric_ops_api +#global fabric_mod_name +#global fabric_mod_dir + +tcm_dir = "/mnt/sdb/lio-core-2.6.git/" + +fabric_ops_api = tcm_dir + "include/target/target_core_fabric_ops.h" +fabric_ops = [] +fabric_mod_name = "tcm_nab5000" +fabric_mod_dir = tcm_dir + "drivers/target/" + fabric_mod_name +fabric_mod_port = "" +fabric_mod_init_port = "" + +def tcm_mod_err(msg): + print msg + sys.exit(1) + +def tcm_mod_create_module_subdir(): + + if os.path.isdir(fabric_mod_dir) == True: + return + + print "Creating fabric_mod_dir: " + fabric_mod_dir + ret = os.mkdir(fabric_mod_dir) + if ret: + tcm_mod_err("Unable to mkdir " + fabric_mod_dir) + + return + +def tcm_mod_build_FC_include(): + global fabric_mod_port + global fabric_mod_init_port + buf = "" + + f = fabric_mod_dir + "/" + fabric_mod_name + "_base.h" + print "Writing file: " + f + + p = open(f, 'w'); + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "#define " + fabric_mod_name.upper() + "_VERSION \"v0.1\"\n" + buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n" + buf += "\n" + buf += "struct " + fabric_mod_name + "_nacl {\n" + buf += " /* Binary World Wide unique Port Name for FC Initiator Nport */\n" + buf += " u64 nport_wwpn;\n" + buf += " /* ASCII formatted WWPN for FC Initiator Nport */\n" + buf += " char nport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n" + buf += " struct se_node_acl se_node_acl;\n" + buf += "};\n" + buf += "\n" + buf += "struct " + fabric_mod_name + "_tpg {\n" + buf += " /* FC lport target portal group tag for TCM */\n" + buf += " u16 lport_tpgt;\n" + buf += " /* Pointer back to " + fabric_mod_name + "_lport */\n" + buf += " struct " + fabric_mod_name + "_lport *lport;\n" + buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n" + buf += " struct se_portal_group se_tpg;\n" + buf += "};\n" + buf += "\n" + buf += "struct " + fabric_mod_name + "_lport {\n" + buf += " /* SCSI protocol the lport is providing */\n" + buf += " u8 lport_proto_id;\n" + buf += " /* Binary World Wide unique Port Name for FC Target Lport */\n" + buf += " u64 lport_wwpn;\n" + buf += " /* ASCII formatted WWPN for FC Target Lport */\n" + buf += " char lport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_lport() */\n" + buf += " struct se_wwn lport_wwn;\n" + buf += "};\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + + fabric_mod_port = "lport" + fabric_mod_init_port = "nport" + + return + +def tcm_mod_build_SAS_include(): + global fabric_mod_port + global fabric_mod_init_port + buf = "" + + f = fabric_mod_dir + "/" + fabric_mod_name + "_base.h" + print "Writing file: " + f + + p = open(f, 'w'); + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "#define " + fabric_mod_name.upper() + "_VERSION \"v0.1\"\n" + buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n" + buf += "\n" + buf += "struct " + fabric_mod_name + "_nacl {\n" + buf += " /* Binary World Wide unique Port Name for SAS Initiator port */\n" + buf += " u64 iport_wwpn;\n" + buf += " /* ASCII formatted WWPN for Sas Initiator port */\n" + buf += " char iport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n" + buf += " struct se_node_acl se_node_acl;\n" + buf += "};\n\n" + buf += "struct " + fabric_mod_name + "_tpg {\n" + buf += " /* SAS port target portal group tag for TCM */\n" + buf += " u16 tport_tpgt;\n" + buf += " /* Pointer back to " + fabric_mod_name + "_tport */\n" + buf += " struct " + fabric_mod_name + "_tport *tport;\n" + buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n" + buf += " struct se_portal_group se_tpg;\n" + buf += "};\n\n" + buf += "struct " + fabric_mod_name + "_tport {\n" + buf += " /* SCSI protocol the tport is providing */\n" + buf += " u8 tport_proto_id;\n" + buf += " /* Binary World Wide unique Port Name for SAS Target port */\n" + buf += " u64 tport_wwpn;\n" + buf += " /* ASCII formatted WWPN for SAS Target port */\n" + buf += " char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_tport() */\n" + buf += " struct se_wwn tport_wwn;\n" + buf += "};\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + + fabric_mod_port = "tport" + fabric_mod_init_port = "iport" + + return + +def tcm_mod_build_iSCSI_include(): + global fabric_mod_port + global fabric_mod_init_port + buf = "" + + f = fabric_mod_dir + "/" + fabric_mod_name + "_base.h" + print "Writing file: " + f + + p = open(f, 'w'); + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "#define " + fabric_mod_name.upper() + "_VERSION \"v0.1\"\n" + buf += "#define " + fabric_mod_name.upper() + "_NAMELEN 32\n" + buf += "\n" + buf += "struct " + fabric_mod_name + "_nacl {\n" + buf += " /* ASCII formatted InitiatorName */\n" + buf += " char iport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_nodeacl() */\n" + buf += " struct se_node_acl se_node_acl;\n" + buf += "};\n\n" + buf += "struct " + fabric_mod_name + "_tpg {\n" + buf += " /* iSCSI target portal group tag for TCM */\n" + buf += " u16 tport_tpgt;\n" + buf += " /* Pointer back to " + fabric_mod_name + "_tport */\n" + buf += " struct " + fabric_mod_name + "_tport *tport;\n" + buf += " /* Returned by " + fabric_mod_name + "_make_tpg() */\n" + buf += " struct se_portal_group se_tpg;\n" + buf += "};\n\n" + buf += "struct " + fabric_mod_name + "_tport {\n" + buf += " /* SCSI protocol the tport is providing */\n" + buf += " u8 tport_proto_id;\n" + buf += " /* ASCII formatted TargetName for IQN */\n" + buf += " char tport_name[" + fabric_mod_name.upper() + "_NAMELEN];\n" + buf += " /* Returned by " + fabric_mod_name + "_make_tport() */\n" + buf += " struct se_wwn tport_wwn;\n" + buf += "};\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + + fabric_mod_port = "tport" + fabric_mod_init_port = "iport" + + return + +def tcm_mod_build_base_includes(proto_ident): + + if proto_ident == "FC": + tcm_mod_build_FC_include() + elif proto_ident == "SAS": + tcm_mod_build_SAS_include() + elif proto_ident == "iSCSI": + tcm_mod_build_iSCSI_include() + else: + print "Unsupported proto_ident: " + proto_ident + sys.exit(1) + + return + +def tcm_mod_build_configfs(proto_ident): + buf = "" + + f = fabric_mod_dir + "/" + fabric_mod_name + "_configfs.c" + print "Writing file: " + f + + p = open(f, 'w'); + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n\n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n\n" + buf += "#include <" + fabric_mod_name + "_base.h>\n" + buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n" + + buf += "/* Local pointer to allocated TCM configfs fabric module */\n" + buf += "struct target_fabric_configfs *" + fabric_mod_name + "_fabric_configfs;\n\n" + + buf += "static struct se_node_acl *" + fabric_mod_name + "_make_nodeacl(\n" + buf += " struct se_portal_group *se_tpg,\n" + buf += " struct config_group *group,\n" + buf += " const char *name)\n" + buf += "{\n" + buf += " struct se_node_acl *se_nacl, *se_nacl_new;\n" + buf += " struct " + fabric_mod_name + "_nacl *nacl;\n" + + if proto_ident == "FC" or proto_ident == "SAS": + buf += " u64 wwpn = 0;\n" + + buf += " u32 nexus_depth;\n\n" + buf += " /* " + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n" + buf += " return ERR_PTR(-EINVAL); */\n" + buf += " se_nacl_new = " + fabric_mod_name + "_alloc_fabric_acl(se_tpg);\n" + buf += " if (!(se_nacl_new))\n" + buf += " return ERR_PTR(-ENOMEM);\n" + buf += "//#warning FIXME: Hardcoded nexus depth in " + fabric_mod_name + "_make_nodeacl()\n" + buf += " nexus_depth = 1;\n" + buf += " /*\n" + buf += " * se_nacl_new may be released by core_tpg_add_initiator_node_acl()\n" + buf += " * when converting a NodeACL from demo mode -> explict\n" + buf += " */\n" + buf += " se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,\n" + buf += " name, nexus_depth);\n" + buf += " if (IS_ERR(se_nacl)) {\n" + buf += " " + fabric_mod_name + "_release_fabric_acl(se_tpg, se_nacl_new);\n" + buf += " return se_nacl;\n" + buf += " }\n" + buf += " /*\n" + buf += " * Locate our struct " + fabric_mod_name + "_nacl and set the FC Nport WWPN\n" + buf += " */\n" + buf += " nacl = container_of(se_nacl, struct " + fabric_mod_name + "_nacl, se_node_acl);\n" + + if proto_ident == "FC" or proto_ident == "SAS": + buf += " nacl->" + fabric_mod_init_port + "_wwpn = wwpn;\n" + + buf += " /* " + fabric_mod_name + "_format_wwn(&nacl->" + fabric_mod_init_port + "_name[0], " + fabric_mod_name.upper() + "_NAMELEN, wwpn); */\n\n" + buf += " return se_nacl;\n" + buf += "}\n\n" + buf += "static void " + fabric_mod_name + "_drop_nodeacl(struct se_node_acl *se_acl)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_nacl *nacl = container_of(se_acl,\n" + buf += " struct " + fabric_mod_name + "_nacl, se_node_acl);\n" + buf += " kfree(nacl);\n" + buf += "}\n\n" + + buf += "static struct se_portal_group *" + fabric_mod_name + "_make_tpg(\n" + buf += " struct se_wwn *wwn,\n" + buf += " struct config_group *group,\n" + buf += " const char *name)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + "*" + fabric_mod_port + " = container_of(wwn,\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg;\n" + buf += " unsigned long tpgt;\n" + buf += " int ret;\n\n" + buf += " if (strstr(name, \"tpgt_\") != name)\n" + buf += " return ERR_PTR(-EINVAL);\n" + buf += " if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > UINT_MAX)\n" + buf += " return ERR_PTR(-EINVAL);\n\n" + buf += " tpg = kzalloc(sizeof(struct " + fabric_mod_name + "_tpg), GFP_KERNEL);\n" + buf += " if (!(tpg)) {\n" + buf += " printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_tpg\");\n" + buf += " return ERR_PTR(-ENOMEM);\n" + buf += " }\n" + buf += " tpg->" + fabric_mod_port + " = " + fabric_mod_port + ";\n" + buf += " tpg->" + fabric_mod_port + "_tpgt = tpgt;\n\n" + buf += " ret = core_tpg_register(&" + fabric_mod_name + "_fabric_configfs->tf_ops, wwn,\n" + buf += " &tpg->se_tpg, (void *)tpg,\n" + buf += " TRANSPORT_TPG_TYPE_NORMAL);\n" + buf += " if (ret < 0) {\n" + buf += " kfree(tpg);\n" + buf += " return NULL;\n" + buf += " }\n" + buf += " return &tpg->se_tpg;\n" + buf += "}\n\n" + buf += "static void " + fabric_mod_name + "_drop_tpg(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n\n" + buf += " core_tpg_deregister(se_tpg);\n" + buf += " kfree(tpg);\n" + buf += "}\n\n" + + buf += "static struct se_wwn *" + fabric_mod_name + "_make_" + fabric_mod_port + "(\n" + buf += " struct target_fabric_configfs *tf,\n" + buf += " struct config_group *group,\n" + buf += " const char *name)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + ";\n" + + if proto_ident == "FC" or proto_ident == "SAS": + buf += " u64 wwpn = 0;\n\n" + + buf += " /* if (" + fabric_mod_name + "_parse_wwn(name, &wwpn, 1) < 0)\n" + buf += " return ERR_PTR(-EINVAL); */\n\n" + buf += " " + fabric_mod_port + " = kzalloc(sizeof(struct " + fabric_mod_name + "_" + fabric_mod_port + "), GFP_KERNEL);\n" + buf += " if (!(" + fabric_mod_port + ")) {\n" + buf += " printk(KERN_ERR \"Unable to allocate struct " + fabric_mod_name + "_" + fabric_mod_port + "\");\n" + buf += " return ERR_PTR(-ENOMEM);\n" + buf += " }\n" + + if proto_ident == "FC" or proto_ident == "SAS": + buf += " " + fabric_mod_port + "->" + fabric_mod_port + "_wwpn = wwpn;\n" + + buf += " /* " + fabric_mod_name + "_format_wwn(&" + fabric_mod_port + "->" + fabric_mod_port + "_name[0], " + fabric_mod_name.upper() + "__NAMELEN, wwpn); */\n\n" + buf += " return &" + fabric_mod_port + "->" + fabric_mod_port + "_wwn;\n" + buf += "}\n\n" + buf += "static void " + fabric_mod_name + "_drop_" + fabric_mod_port + "(struct se_wwn *wwn)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = container_of(wwn,\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + ", " + fabric_mod_port + "_wwn);\n" + buf += " kfree(" + fabric_mod_port + ");\n" + buf += "}\n\n" + buf += "static ssize_t " + fabric_mod_name + "_wwn_show_attr_version(\n" + buf += " struct target_fabric_configfs *tf,\n" + buf += " char *page)\n" + buf += "{\n" + buf += " return sprintf(page, \"" + fabric_mod_name.upper() + " fabric module %s on %s/%s\"\n" + buf += " \"on \"UTS_RELEASE\"\\n\", " + fabric_mod_name.upper() + "_VERSION, utsname()->sysname,\n" + buf += " utsname()->machine);\n" + buf += "}\n\n" + buf += "TF_WWN_ATTR_RO(" + fabric_mod_name + ", version);\n\n" + buf += "static struct configfs_attribute *" + fabric_mod_name + "_wwn_attrs[] = {\n" + buf += " &" + fabric_mod_name + "_wwn_version.attr,\n" + buf += " NULL,\n" + buf += "};\n\n" + + buf += "static struct target_core_fabric_ops " + fabric_mod_name + "_ops = {\n" + buf += " .get_fabric_name = " + fabric_mod_name + "_get_fabric_name,\n" + buf += " .get_fabric_proto_ident = " + fabric_mod_name + "_get_fabric_proto_ident,\n" + buf += " .tpg_get_wwn = " + fabric_mod_name + "_get_fabric_wwn,\n" + buf += " .tpg_get_tag = " + fabric_mod_name + "_get_tag,\n" + buf += " .tpg_get_default_depth = " + fabric_mod_name + "_get_default_depth,\n" + buf += " .tpg_get_pr_transport_id = " + fabric_mod_name + "_get_pr_transport_id,\n" + buf += " .tpg_get_pr_transport_id_len = " + fabric_mod_name + "_get_pr_transport_id_len,\n" + buf += " .tpg_parse_pr_out_transport_id = " + fabric_mod_name + "_parse_pr_out_transport_id,\n" + buf += " .tpg_check_demo_mode = " + fabric_mod_name + "_check_false,\n" + buf += " .tpg_check_demo_mode_cache = " + fabric_mod_name + "_check_true,\n" + buf += " .tpg_check_demo_mode_write_protect = " + fabric_mod_name + "_check_true,\n" + buf += " .tpg_check_prod_mode_write_protect = " + fabric_mod_name + "_check_false,\n" + buf += " .tpg_alloc_fabric_acl = " + fabric_mod_name + "_alloc_fabric_acl,\n" + buf += " .tpg_release_fabric_acl = " + fabric_mod_name + "_release_fabric_acl,\n" + buf += " .tpg_get_inst_index = " + fabric_mod_name + "_tpg_get_inst_index,\n" + buf += " .release_cmd_to_pool = " + fabric_mod_name + "_release_cmd,\n" + buf += " .release_cmd_direct = " + fabric_mod_name + "_release_cmd,\n" + buf += " .shutdown_session = " + fabric_mod_name + "_shutdown_session,\n" + buf += " .close_session = " + fabric_mod_name + "_close_session,\n" + buf += " .stop_session = " + fabric_mod_name + "_stop_session,\n" + buf += " .fall_back_to_erl0 = " + fabric_mod_name + "_reset_nexus,\n" + buf += " .sess_logged_in = " + fabric_mod_name + "_sess_logged_in,\n" + buf += " .sess_get_index = " + fabric_mod_name + "_sess_get_index,\n" + buf += " .sess_get_initiator_sid = NULL,\n" + buf += " .write_pending = " + fabric_mod_name + "_write_pending,\n" + buf += " .write_pending_status = " + fabric_mod_name + "_write_pending_status,\n" + buf += " .set_default_node_attributes = " + fabric_mod_name + "_set_default_node_attrs,\n" + buf += " .get_task_tag = " + fabric_mod_name + "_get_task_tag,\n" + buf += " .get_cmd_state = " + fabric_mod_name + "_get_cmd_state,\n" + buf += " .new_cmd_failure = " + fabric_mod_name + "_new_cmd_failure,\n" + buf += " .queue_data_in = " + fabric_mod_name + "_queue_data_in,\n" + buf += " .queue_status = " + fabric_mod_name + "_queue_status,\n" + buf += " .queue_tm_rsp = " + fabric_mod_name + "_queue_tm_rsp,\n" + buf += " .get_fabric_sense_len = " + fabric_mod_name + "_get_fabric_sense_len,\n" + buf += " .set_fabric_sense_len = " + fabric_mod_name + "_set_fabric_sense_len,\n" + buf += " .is_state_remove = " + fabric_mod_name + "_is_state_remove,\n" + buf += " .pack_lun = " + fabric_mod_name + "_pack_lun,\n" + buf += " /*\n" + buf += " * Setup function pointers for generic logic in target_core_fabric_configfs.c\n" + buf += " */\n" + buf += " .fabric_make_wwn = " + fabric_mod_name + "_make_" + fabric_mod_port + ",\n" + buf += " .fabric_drop_wwn = " + fabric_mod_name + "_drop_" + fabric_mod_port + ",\n" + buf += " .fabric_make_tpg = " + fabric_mod_name + "_make_tpg,\n" + buf += " .fabric_drop_tpg = " + fabric_mod_name + "_drop_tpg,\n" + buf += " .fabric_post_link = NULL,\n" + buf += " .fabric_pre_unlink = NULL,\n" + buf += " .fabric_make_np = NULL,\n" + buf += " .fabric_drop_np = NULL,\n" + buf += " .fabric_make_nodeacl = " + fabric_mod_name + "_make_nodeacl,\n" + buf += " .fabric_drop_nodeacl = " + fabric_mod_name + "_drop_nodeacl,\n" + buf += "};\n\n" + + buf += "static int " + fabric_mod_name + "_register_configfs(void)\n" + buf += "{\n" + buf += " struct target_fabric_configfs *fabric;\n" + buf += " int ret;\n\n" + buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + " fabric module %s on %s/%s\"\n" + buf += " \" on \"UTS_RELEASE\"\\n\"," + fabric_mod_name.upper() + "_VERSION, utsname()->sysname,\n" + buf += " utsname()->machine);\n" + buf += " /*\n" + buf += " * Register the top level struct config_item_type with TCM core\n" + buf += " */\n" + buf += " fabric = target_fabric_configfs_init(THIS_MODULE, \"" + fabric_mod_name[4:] + "\");\n" + buf += " if (!(fabric)) {\n" + buf += " printk(KERN_ERR \"target_fabric_configfs_init() failed\\n\");\n" + buf += " return -ENOMEM;\n" + buf += " }\n" + buf += " /*\n" + buf += " * Setup fabric->tf_ops from our local " + fabric_mod_name + "_ops\n" + buf += " */\n" + buf += " fabric->tf_ops = " + fabric_mod_name + "_ops;\n" + buf += " /*\n" + buf += " * Setup default attribute lists for various fabric->tf_cit_tmpl\n" + buf += " */\n" + buf += " TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = " + fabric_mod_name + "_wwn_attrs;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;\n" + buf += " TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;\n" + buf += " /*\n" + buf += " * Register the fabric for use within TCM\n" + buf += " */\n" + buf += " ret = target_fabric_configfs_register(fabric);\n" + buf += " if (ret < 0) {\n" + buf += " printk(KERN_ERR \"target_fabric_configfs_register() failed\"\n" + buf += " \" for " + fabric_mod_name.upper() + "\\n\");\n" + buf += " return ret;\n" + buf += " }\n" + buf += " /*\n" + buf += " * Setup our local pointer to *fabric\n" + buf += " */\n" + buf += " " + fabric_mod_name + "_fabric_configfs = fabric;\n" + buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + "[0] - Set fabric -> " + fabric_mod_name + "_fabric_configfs\\n\");\n" + buf += " return 0;\n" + buf += "};\n\n" + buf += "static void " + fabric_mod_name + "_deregister_configfs(void)\n" + buf += "{\n" + buf += " if (!(" + fabric_mod_name + "_fabric_configfs))\n" + buf += " return;\n\n" + buf += " target_fabric_configfs_deregister(" + fabric_mod_name + "_fabric_configfs);\n" + buf += " " + fabric_mod_name + "_fabric_configfs = NULL;\n" + buf += " printk(KERN_INFO \"" + fabric_mod_name.upper() + "[0] - Cleared " + fabric_mod_name + "_fabric_configfs\\n\");\n" + buf += "};\n\n" + + buf += "static int __init " + fabric_mod_name + "_init(void)\n" + buf += "{\n" + buf += " int ret;\n\n" + buf += " ret = " + fabric_mod_name + "_register_configfs();\n" + buf += " if (ret < 0)\n" + buf += " return ret;\n\n" + buf += " return 0;\n" + buf += "};\n\n" + buf += "static void " + fabric_mod_name + "_exit(void)\n" + buf += "{\n" + buf += " " + fabric_mod_name + "_deregister_configfs();\n" + buf += "};\n\n" + + buf += "#ifdef MODULE\n" + buf += "MODULE_DESCRIPTION(\"" + fabric_mod_name.upper() + " series fabric driver\");\n" + buf += "MODULE_LICENSE(\"GPL\");\n" + buf += "module_init(" + fabric_mod_name + "_init);\n" + buf += "module_exit(" + fabric_mod_name + "_exit);\n" + buf += "#endif\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + + return + +def tcm_mod_scan_fabric_ops(): + + print "Using tcm_mod_scan_fabric_ops: " + fabric_ops_api + process_fo = 0; + + p = open(fabric_ops_api, 'r') + + line = p.readline() + while line: + if process_fo == 0 and re.search('struct target_core_fabric_ops {', line): + line = p.readline() + continue + + if process_fo == 0: + process_fo = 1; + line = p.readline() + # Search for function pointer + if not re.search('\(\*', line): + continue + + fabric_ops.append(line.rstrip()) + continue + + line = p.readline() + # Search for function pointer + if not re.search('\(\*', line): + continue + + fabric_ops.append(line.rstrip()) + + p.close() + return + +def tcm_mod_dump_fabric_ops(proto_ident): + buf = "" + bufi = "" + + f = fabric_mod_dir + "/" + fabric_mod_name + "_fabric.c" + print "Writing file: " + f + + p = open(f, 'w') + if not p: + tcm_mod_err("Unable to open file: " + f) + + fi = fabric_mod_dir + "/" + fabric_mod_name + "_fabric.h" + print "Writing file: " + fi + + pi = open(fi, 'w') + if not pi: + tcm_mod_err("Unable to open file: " + fi) + + buf = "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n\n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include \n" + buf += "#include <" + fabric_mod_name + "_base.h>\n" + buf += "#include <" + fabric_mod_name + "_fabric.h>\n\n" + + buf += "int " + fabric_mod_name + "_check_true(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " return 1;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_check_true(struct se_portal_group *);\n" + + buf += "int " + fabric_mod_name + "_check_false(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_check_false(struct se_portal_group *);\n" + + total_fabric_ops = len(fabric_ops) + i = 0 + + while i < total_fabric_ops: + fo = fabric_ops[i] + i += 1 +# print "fabric_ops: " + fo + + if re.search('get_fabric_name', fo): + buf += "char *" + fabric_mod_name + "_get_fabric_name(void)\n" + buf += "{\n" + buf += " return \"" + fabric_mod_name[4:] + "\";\n" + buf += "}\n\n" + bufi += "char *" + fabric_mod_name + "_get_fabric_name(void);\n" + continue + + if re.search('get_fabric_proto_ident', fo): + buf += "u8 " + fabric_mod_name + "_get_fabric_proto_ident(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n" + buf += " u8 proto_id;\n\n" + buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n" + if proto_ident == "FC": + buf += " case SCSI_PROTOCOL_FCP:\n" + buf += " default:\n" + buf += " proto_id = fc_get_fabric_proto_ident(se_tpg);\n" + buf += " break;\n" + elif proto_ident == "SAS": + buf += " case SCSI_PROTOCOL_SAS:\n" + buf += " default:\n" + buf += " proto_id = sas_get_fabric_proto_ident(se_tpg);\n" + buf += " break;\n" + elif proto_ident == "iSCSI": + buf += " case SCSI_PROTOCOL_ISCSI:\n" + buf += " default:\n" + buf += " proto_id = iscsi_get_fabric_proto_ident(se_tpg);\n" + buf += " break;\n" + + buf += " }\n\n" + buf += " return proto_id;\n" + buf += "}\n\n" + bufi += "u8 " + fabric_mod_name + "_get_fabric_proto_ident(struct se_portal_group *);\n" + + if re.search('get_wwn', fo): + buf += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n\n" + buf += " return &" + fabric_mod_port + "->" + fabric_mod_port + "_name[0];\n" + buf += "}\n\n" + bufi += "char *" + fabric_mod_name + "_get_fabric_wwn(struct se_portal_group *);\n" + + if re.search('get_tag', fo): + buf += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " return tpg->" + fabric_mod_port + "_tpgt;\n" + buf += "}\n\n" + bufi += "u16 " + fabric_mod_name + "_get_tag(struct se_portal_group *);\n" + + if re.search('get_default_depth', fo): + buf += "u32 " + fabric_mod_name + "_get_default_depth(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " return 1;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_get_default_depth(struct se_portal_group *);\n" + + if re.search('get_pr_transport_id\)\(', fo): + buf += "u32 " + fabric_mod_name + "_get_pr_transport_id(\n" + buf += " struct se_portal_group *se_tpg,\n" + buf += " struct se_node_acl *se_nacl,\n" + buf += " struct t10_pr_registration *pr_reg,\n" + buf += " int *format_code,\n" + buf += " unsigned char *buf)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n" + buf += " int ret = 0;\n\n" + buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n" + if proto_ident == "FC": + buf += " case SCSI_PROTOCOL_FCP:\n" + buf += " default:\n" + buf += " ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code, buf);\n" + buf += " break;\n" + elif proto_ident == "SAS": + buf += " case SCSI_PROTOCOL_SAS:\n" + buf += " default:\n" + buf += " ret = sas_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code, buf);\n" + buf += " break;\n" + elif proto_ident == "iSCSI": + buf += " case SCSI_PROTOCOL_ISCSI:\n" + buf += " default:\n" + buf += " ret = iscsi_get_pr_transport_id(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code, buf);\n" + buf += " break;\n" + + buf += " }\n\n" + buf += " return ret;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_get_pr_transport_id(struct se_portal_group *,\n" + bufi += " struct se_node_acl *, struct t10_pr_registration *,\n" + bufi += " int *, unsigned char *);\n" + + if re.search('get_pr_transport_id_len\)\(', fo): + buf += "u32 " + fabric_mod_name + "_get_pr_transport_id_len(\n" + buf += " struct se_portal_group *se_tpg,\n" + buf += " struct se_node_acl *se_nacl,\n" + buf += " struct t10_pr_registration *pr_reg,\n" + buf += " int *format_code)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n" + buf += " int ret = 0;\n\n" + buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n" + if proto_ident == "FC": + buf += " case SCSI_PROTOCOL_FCP:\n" + buf += " default:\n" + buf += " ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code);\n" + buf += " break;\n" + elif proto_ident == "SAS": + buf += " case SCSI_PROTOCOL_SAS:\n" + buf += " default:\n" + buf += " ret = sas_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code);\n" + buf += " break;\n" + elif proto_ident == "iSCSI": + buf += " case SCSI_PROTOCOL_ISCSI:\n" + buf += " default:\n" + buf += " ret = iscsi_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,\n" + buf += " format_code);\n" + buf += " break;\n" + + + buf += " }\n\n" + buf += " return ret;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_get_pr_transport_id_len(struct se_portal_group *,\n" + bufi += " struct se_node_acl *, struct t10_pr_registration *,\n" + bufi += " int *);\n" + + if re.search('parse_pr_out_transport_id\)\(', fo): + buf += "char *" + fabric_mod_name + "_parse_pr_out_transport_id(\n" + buf += " struct se_portal_group *se_tpg,\n" + buf += " const char *buf,\n" + buf += " u32 *out_tid_len,\n" + buf += " char **port_nexus_ptr)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_tpg *tpg = container_of(se_tpg,\n" + buf += " struct " + fabric_mod_name + "_tpg, se_tpg);\n" + buf += " struct " + fabric_mod_name + "_" + fabric_mod_port + " *" + fabric_mod_port + " = tpg->" + fabric_mod_port + ";\n" + buf += " char *tid = NULL;\n\n" + buf += " switch (" + fabric_mod_port + "->" + fabric_mod_port + "_proto_id) {\n" + if proto_ident == "FC": + buf += " case SCSI_PROTOCOL_FCP:\n" + buf += " default:\n" + buf += " tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n" + buf += " port_nexus_ptr);\n" + elif proto_ident == "SAS": + buf += " case SCSI_PROTOCOL_SAS:\n" + buf += " default:\n" + buf += " tid = sas_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n" + buf += " port_nexus_ptr);\n" + elif proto_ident == "iSCSI": + buf += " case SCSI_PROTOCOL_ISCSI:\n" + buf += " default:\n" + buf += " tid = iscsi_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,\n" + buf += " port_nexus_ptr);\n" + + buf += " }\n\n" + buf += " return tid;\n" + buf += "}\n\n" + bufi += "char *" + fabric_mod_name + "_parse_pr_out_transport_id(struct se_portal_group *,\n" + bufi += " const char *, u32 *, char **);\n" + + if re.search('alloc_fabric_acl\)\(', fo): + buf += "struct se_node_acl *" + fabric_mod_name + "_alloc_fabric_acl(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_nacl *nacl;\n\n" + buf += " nacl = kzalloc(sizeof(struct " + fabric_mod_name + "_nacl), GFP_KERNEL);\n" + buf += " if (!(nacl)) {\n" + buf += " printk(KERN_ERR \"Unable to alocate struct " + fabric_mod_name + "_nacl\\n\");\n" + buf += " return NULL;\n" + buf += " }\n\n" + buf += " return &nacl->se_node_acl;\n" + buf += "}\n\n" + bufi += "struct se_node_acl *" + fabric_mod_name + "_alloc_fabric_acl(struct se_portal_group *);\n" + + if re.search('release_fabric_acl\)\(', fo): + buf += "void " + fabric_mod_name + "_release_fabric_acl(\n" + buf += " struct se_portal_group *se_tpg,\n" + buf += " struct se_node_acl *se_nacl)\n" + buf += "{\n" + buf += " struct " + fabric_mod_name + "_nacl *nacl = container_of(se_nacl,\n" + buf += " struct " + fabric_mod_name + "_nacl, se_node_acl);\n" + buf += " kfree(nacl);\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_release_fabric_acl(struct se_portal_group *,\n" + bufi += " struct se_node_acl *);\n" + + if re.search('tpg_get_inst_index\)\(', fo): + buf += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *se_tpg)\n" + buf += "{\n" + buf += " return 1;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_tpg_get_inst_index(struct se_portal_group *);\n" + + if re.search('release_cmd_to_pool', fo): + buf += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_release_cmd(struct se_cmd *);\n" + + if re.search('shutdown_session\)\(', fo): + buf += "int " + fabric_mod_name + "_shutdown_session(struct se_session *se_sess)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_shutdown_session(struct se_session *);\n" + + if re.search('close_session\)\(', fo): + buf += "void " + fabric_mod_name + "_close_session(struct se_session *se_sess)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_close_session(struct se_session *);\n" + + if re.search('stop_session\)\(', fo): + buf += "void " + fabric_mod_name + "_stop_session(struct se_session *se_sess, int sess_sleep , int conn_sleep)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_stop_session(struct se_session *, int, int);\n" + + if re.search('fall_back_to_erl0\)\(', fo): + buf += "void " + fabric_mod_name + "_reset_nexus(struct se_session *se_sess)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_reset_nexus(struct se_session *);\n" + + if re.search('sess_logged_in\)\(', fo): + buf += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *se_sess)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_sess_logged_in(struct se_session *);\n" + + if re.search('sess_get_index\)\(', fo): + buf += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *se_sess)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_sess_get_index(struct se_session *);\n" + + if re.search('write_pending\)\(', fo): + buf += "int " + fabric_mod_name + "_write_pending(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_write_pending(struct se_cmd *);\n" + + if re.search('write_pending_status\)\(', fo): + buf += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_write_pending_status(struct se_cmd *);\n" + + if re.search('set_default_node_attributes\)\(', fo): + buf += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *nacl)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_set_default_node_attrs(struct se_node_acl *);\n" + + if re.search('get_task_tag\)\(', fo): + buf += "u32 " + fabric_mod_name + "_get_task_tag(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "u32 " + fabric_mod_name + "_get_task_tag(struct se_cmd *);\n" + + if re.search('get_cmd_state\)\(', fo): + buf += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_get_cmd_state(struct se_cmd *);\n" + + if re.search('new_cmd_failure\)\(', fo): + buf += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return;\n" + buf += "}\n\n" + bufi += "void " + fabric_mod_name + "_new_cmd_failure(struct se_cmd *);\n" + + if re.search('queue_data_in\)\(', fo): + buf += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_queue_data_in(struct se_cmd *);\n" + + if re.search('queue_status\)\(', fo): + buf += "int " + fabric_mod_name + "_queue_status(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_queue_status(struct se_cmd *);\n" + + if re.search('queue_tm_rsp\)\(', fo): + buf += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_queue_tm_rsp(struct se_cmd *);\n" + + if re.search('get_fabric_sense_len\)\(', fo): + buf += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "u16 " + fabric_mod_name + "_get_fabric_sense_len(void);\n" + + if re.search('set_fabric_sense_len\)\(', fo): + buf += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "u16 " + fabric_mod_name + "_set_fabric_sense_len(struct se_cmd *, u32);\n" + + if re.search('is_state_remove\)\(', fo): + buf += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *se_cmd)\n" + buf += "{\n" + buf += " return 0;\n" + buf += "}\n\n" + bufi += "int " + fabric_mod_name + "_is_state_remove(struct se_cmd *);\n" + + if re.search('pack_lun\)\(', fo): + buf += "u64 " + fabric_mod_name + "_pack_lun(unsigned int lun)\n" + buf += "{\n" + buf += " WARN_ON(lun >= 256);\n" + buf += " /* Caller wants this byte-swapped */\n" + buf += " return cpu_to_le64((lun & 0xff) << 8);\n" + buf += "}\n\n" + bufi += "u64 " + fabric_mod_name + "_pack_lun(unsigned int);\n" + + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + + ret = pi.write(bufi) + if ret: + tcm_mod_err("Unable to write fi: " + fi) + + pi.close() + return + +def tcm_mod_build_kbuild(): + + buf = "" + f = fabric_mod_dir + "/Kbuild" + print "Writing file: " + f + + p = open(f, 'w') + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "EXTRA_CFLAGS += -I$(srctree)/drivers/target/ -I$(srctree)/include/ -I$(srctree)/drivers/scsi/ -I$(srctree)/include/scsi/ -I$(srctree)/drivers/target/" + fabric_mod_name + "\n\n" + buf += fabric_mod_name + "-objs := " + fabric_mod_name + "_fabric.o \\\n" + buf += " " + fabric_mod_name + "_configfs.o\n" + buf += "obj-$(CONFIG_" + fabric_mod_name.upper() + ") += " + fabric_mod_name + ".o\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + return + +def tcm_mod_build_kconfig(): + + buf = "" + f = fabric_mod_dir + "/Kconfig" + print "Writing file: " + f + + p = open(f, 'w') + if not p: + tcm_mod_err("Unable to open file: " + f) + + buf = "config " + fabric_mod_name.upper() + "\n" + buf += " tristate \"" + fabric_mod_name.upper() + " fabric module\"\n" + buf += " depends on TARGET_CORE && CONFIGFS_FS\n" + buf += " default n\n" + buf += " ---help---\n" + buf += " Say Y here to enable the " + fabric_mod_name.upper() + " fabric module\n" + + ret = p.write(buf) + if ret: + tcm_mod_err("Unable to write f: " + f) + + p.close() + return + +def main(): +# proto_ident = "FC" +# proto_ident = "SAS" + proto_ident = "iSCSI" + + tcm_mod_create_module_subdir() + tcm_mod_build_base_includes(proto_ident) + tcm_mod_scan_fabric_ops() + tcm_mod_dump_fabric_ops(proto_ident) + tcm_mod_build_configfs(proto_ident) + tcm_mod_build_kbuild() + tcm_mod_build_kconfig() + + return + +if __name__ == "__main__": + main() diff --git a/Documentation/target/tcm_mod_builder.txt b/Documentation/target/tcm_mod_builder.txt new file mode 100644 index 0000000..a6d4357 --- /dev/null +++ b/Documentation/target/tcm_mod_builder.txt @@ -0,0 +1,138 @@ +>>>>>>>>>> The TCM v4 fabric module script generator <<<<<<<<<< + +Greetings all, + +This document is intended to be a mini-HOWTO for using the tcm_mod_builder.py +script to generate a brand new functional TCM v4 fabric .ko module of your very own, +that once built can be immediately be loaded to start access the new TCM/ConfigFS +fabric skeleton, by simplying using: + + modprobe $TCM_NEW_MOD + mkdir -p /sys/kernel/config/target/$TCM_NEW_MOD + +This script will create a new drivers/target/$TCM_NEW_MOD/, and will do the following + + *) Generate new API callers for drivers/target/target_core_fabric_configs.c logic + ->make_nodeacl(), ->drop_nodeacl(), ->make_tpg(), ->drop_tpg() + ->make_wwn(), ->drop_wwn(). These are created into $TCM_NEW_MOD/$TCM_NEW_MOD_configfs.c + *) Generate basic infrastructure for loading/unloading LKMs and TCM/ConfigFS fabric module + using a skeleton struct target_core_fabric_ops API template. + *) Based on user defined T10 Proto_Ident for the new fabric module being built, + the TransportID / Initiator and Target WWPN related handlers for + SPC-3 persistent reservation are automatically generated in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c + using drivers/target/target_core_fabric_lib.c logic. + *) NOP API calls for all other Data I/O path and fabric dependent attribute logic + in $TCM_NEW_MOD/$TCM_NEW_MOD_fabric.c + +So far the generation of new functional ConfigFS skeletons supports for FC, +SAS and iSCSI proto_idents, which is defined at the top of tcm_mod_builder.py:main(). +Once proto_ident is selected in main(), and the handful of other global variables at top +of tcm_mod_builder.py are correct, actually running the script looks like: + +target:/mnt/sdb/lio-core-2.6.git/Documentation/target# ./tcm_mod_builder.py +Writing file: +/mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/tcm_nab5000_base.h +Using tcm_mod_scan_fabric_ops: +/mnt/sdb/lio-core-2.6.git/include/target/target_core_fabric_ops.h +Writing file: +/mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/tcm_nab5000_fabric.c +Writing file: +/mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/tcm_nab5000_fabric.h +Writing file: +/mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/tcm_nab5000_configfs.c +Writing file: /mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/Kbuild +Writing file: /mnt/sdb/lio-core-2.6.git/drivers/target/tcm_nab5000/Kconfig + +*) Edit drivers/target/Kbuild and drivers/target/Kconfig before compling + +Add the following line to Kbuild for the newly generated fabric module: + + obj-$(CONFIG_TCM_NAB5000) += tcm_nab5000/ + +and the same for Kconfig: + + source "drivers/target/tcm_nab5000/Kconfig" + +*) Build using 'make modules', once completed you will have: + +target:/mnt/sdb/lio-core-2.6.git# ls -la drivers/target/tcm_nab5000/ +total 1292 +drwxr-xr-x 2 root root 4096 2010-08-24 12:49 . +drwxr-xr-x 9 root root 4096 2010-08-24 12:10 .. +-rw-r--r-- 1 root root 8 2010-08-24 12:26 built-in.o +-rw-r--r-- 1 root root 136 2010-08-24 12:26 .built-in.o.cmd +-rw-r--r-- 1 root root 282 2010-08-24 13:06 Kbuild +-rw-r--r-- 1 root root 171 2010-08-24 13:06 Kconfig +-rw-r--r-- 1 root root 49 2010-08-24 12:49 modules.order +-rw-r--r-- 1 root root 738 2010-08-24 13:06 tcm_nab5000_base.h +-rw-r--r-- 1 root root 9096 2010-08-24 13:06 tcm_nab5000_configfs.c +-rw-r--r-- 1 root root 172584 2010-08-24 12:48 tcm_nab5000_configfs.o +-rw-r--r-- 1 root root 38842 2010-08-24 12:48 .tcm_nab5000_configfs.o.cmd +-rw-r--r-- 1 root root 5414 2010-08-24 13:06 tcm_nab5000_fabric.c +-rw-r--r-- 1 root root 2016 2010-08-24 13:06 tcm_nab5000_fabric.h +-rw-r--r-- 1 root root 187244 2010-08-24 12:48 tcm_nab5000_fabric.o +-rw-r--r-- 1 root root 40195 2010-08-24 12:48 .tcm_nab5000_fabric.o.cmd +-rw-r--r-- 1 root root 379449 2010-08-24 12:49 tcm_nab5000.ko +-rw-r--r-- 1 root root 264 2010-08-24 12:49 .tcm_nab5000.ko.cmd +-rw-r--r-- 1 root root 459 2010-08-24 12:49 tcm_nab5000.mod.c +-rw-r--r-- 1 root root 23780 2010-08-24 12:49 tcm_nab5000.mod.o +-rw-r--r-- 1 root root 22475 2010-08-24 12:49 .tcm_nab5000.mod.o.cmd +-rw-r--r-- 1 root root 356722 2010-08-24 12:48 tcm_nab5000.o +-rw-r--r-- 1 root root 211 2010-08-24 12:48 .tcm_nab5000.o.cmd + +*) Load the new module, create a lun_0 configfs group, and add new TCM Core + IBLOCK backstore symlink to port: + +target:/mnt/sdb/lio-core-2.6.git# insmod drivers/target/tcm_nab5000.ko +target:/mnt/sdb/lio-core-2.6.git# mkdir -p /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0 +target:/mnt/sdb/lio-core-2.6.git# cd /sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0/ +target:/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 + +target:/sys/kernel/config/target/nab5000/iqn.foo/tpgt_1/lun/lun_0# cd - +target:/mnt/sdb/lio-core-2.6.git# tree /sys/kernel/config/target/nab5000/ +/sys/kernel/config/target/nab5000/ +|-- discovery_auth +|-- iqn.foo +| `-- tpgt_1 +| |-- acls +| |-- attrib +| |-- lun +| | `-- lun_0 +| | |-- alua_tg_pt_gp +| | |-- alua_tg_pt_offline +| | |-- alua_tg_pt_status +| | |-- alua_tg_pt_write_md +| | `-- nab5000_port -> ../../../../../../target/core/iblock_0/lvm_test0 +| |-- np +| `-- param +`-- version + +target:/mnt/sdb/lio-core-2.6.git# lsmod +Module Size Used by +tcm_nab5000 3923 4 +iscsi_target_mod 189925 1 +tcm_loop 13173 5 +target_core_stgt 8049 0 +target_core_pscsi 10472 1 +target_core_file 7175 2 +target_core_iblock 8164 2 +target_core_mod 209392 44 +tcm_nab5000,iscsi_target_mod,tcm_loop,target_core_stgt,target_core_pscsi,target_core_file,target_core_iblock +scsi_debug 56768 1 +scsi_tgt 8658 1 target_core_stgt +configfs 20660 2 target_core_mod + +---------------------------------------------------------------------- + +Future TODO items: + + *) Make global variables in tcm_mod_builder.py accessable as parameters + *) Add more T10 proto_idents + *) Make tcm_mod_dump_fabric_ops() smater and generate function pointer + defs directly from include/target/target_core_fabric_ops.h:struct target_core_fabric_ops + structure members. + *) Make it optional to add drivers/target/K[build,config] lines in + order to build new module + +August 24th, 2010 +Nicholas A. Bellinger diff --git a/drivers/Kconfig b/drivers/Kconfig index a2b902f..3002329 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -26,6 +26,8 @@ source "drivers/ata/Kconfig" source "drivers/md/Kconfig" +source "drivers/target/Kconfig" + source "drivers/message/fusion/Kconfig" source "drivers/firewire/Kconfig" diff --git a/drivers/Makefile b/drivers/Makefile index ae47344..add8274 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -45,6 +45,7 @@ obj-y += macintosh/ obj-$(CONFIG_IDE) += ide/ obj-$(CONFIG_SCSI) += scsi/ obj-$(CONFIG_ATA) += ata/ +obj-$(CONFIG_TARGET_CORE) += target/ obj-$(CONFIG_MTD) += mtd/ obj-$(CONFIG_SPI) += spi/ obj-y += net/ diff --git a/drivers/target/Kbuild b/drivers/target/Kbuild new file mode 100644 index 0000000..a610f67 --- /dev/null +++ b/drivers/target/Kbuild @@ -0,0 +1,27 @@ +EXTRA_CFLAGS += -I$(srctree)/drivers/target/ -I$(srctree)/drivers/scsi/ + +target_core_mod-y := target_core_configfs.o \ + target_core_device.o \ + target_core_fabric_configfs.o \ + target_core_fabric_lib.o \ + target_core_hba.o \ + target_core_pr.o \ + target_core_alua.o \ + target_core_scdb.o \ + target_core_tmr.o \ + target_core_tpg.o \ + target_core_transport.o \ + target_core_ua.o \ + target_core_rd.o \ + target_core_mib.o + +ifdef CONFIG_TCM_DEBUG_DEV +EXTRA_CFLAGS += -DDEBUG_DEV +endif + +obj-$(CONFIG_TARGET_CORE) += target_core_mod.o + +# Subsystem modules +obj-$(CONFIG_TCM_IBLOCK) += target_core_iblock.o +obj-$(CONFIG_TCM_FILEIO) += target_core_file.o +obj-$(CONFIG_TCM_PSCSI) += target_core_pscsi.o diff --git a/drivers/target/Kconfig b/drivers/target/Kconfig new file mode 100644 index 0000000..5c37653 --- /dev/null +++ b/drivers/target/Kconfig @@ -0,0 +1,34 @@ +config TARGET_CORE + tristate "Generic Target Core Mod (TCM) and ConfigFS Infrastructure" + select CONFIGFS_FS + default m + ---help--- + Say Y or M here to enable the TCM Storage Engine and ConfigFS enabled control path for target_core_mod. This includes built-in TCM RAMDISK subsystem logic for virtual LUN 0 access + +config TCM_DEBUG_DEV + tristate "TCM Debug device code" + depends on TARGET_CORE + default n + ---help--- + Say Y here to enable the TCM Debug device code + +config TCM_IBLOCK + tristate "TCM/IBLOCK Subsystem Plugin for Linux/BLOCK" + depends on TARGET_CORE + default y + ---help--- + Say Y here to enable the TCM/IBLOCK subsystem plugin for non-buffered access to Linux/Block devices using BIO + +config TCM_FILEIO + tristate "TCM/FILEIO Subsystem Plugin for Linux/VFS" + depends on TARGET_CORE + default y + ---help--- + Say Y here to enable the TCM/FILEIO subsystem plugin for buffered access to Linux/VFS struct file or struct block_device + +config TCM_PSCSI + tristate "TCM/pSCSI Subsystem Plugin for Linux/SCSI" + depends on TARGET_CORE + default y + ---help--- + Say Y here to enable the TCM/pSCSI subsystem plugin for non-buffered passthrough access to Linux/SCSI device -- 1.7.2.2