Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * FiberChannel transport specific attributes exported to sysfs. |
| 3 | * |
| 4 | * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | * ======== |
| 21 | * |
| 22 | * Copyright (C) 2004-2005 James Smart, Emulex Corporation |
| 23 | * Rewrite for host, target, device, and remote port attributes, |
| 24 | * statistics, and service functions... |
| 25 | * |
| 26 | */ |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/init.h> |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 29 | #include <linux/sched.h> /* workqueue stuff, HZ */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <scsi/scsi_device.h> |
| 31 | #include <scsi/scsi_host.h> |
| 32 | #include <scsi/scsi_transport.h> |
| 33 | #include <scsi/scsi_transport_fc.h> |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 34 | #include <scsi/scsi_cmnd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "scsi_priv.h" |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | /* |
| 38 | * Redefine so that we can have same named attributes in the |
| 39 | * sdev/starget/host objects. |
| 40 | */ |
| 41 | #define FC_CLASS_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
| 42 | struct class_device_attribute class_device_attr_##_prefix##_##_name = \ |
| 43 | __ATTR(_name,_mode,_show,_store) |
| 44 | |
| 45 | #define fc_enum_name_search(title, table_type, table) \ |
| 46 | static const char *get_fc_##title##_name(enum table_type table_key) \ |
| 47 | { \ |
| 48 | int i; \ |
| 49 | char *name = NULL; \ |
| 50 | \ |
| 51 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ |
| 52 | if (table[i].value == table_key) { \ |
| 53 | name = table[i].name; \ |
| 54 | break; \ |
| 55 | } \ |
| 56 | } \ |
| 57 | return name; \ |
| 58 | } |
| 59 | |
| 60 | #define fc_enum_name_match(title, table_type, table) \ |
| 61 | static int get_fc_##title##_match(const char *table_key, \ |
| 62 | enum table_type *value) \ |
| 63 | { \ |
| 64 | int i; \ |
| 65 | \ |
| 66 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ |
| 67 | if (strncmp(table_key, table[i].name, \ |
| 68 | table[i].matchlen) == 0) { \ |
| 69 | *value = table[i].value; \ |
| 70 | return 0; /* success */ \ |
| 71 | } \ |
| 72 | } \ |
| 73 | return 1; /* failure */ \ |
| 74 | } |
| 75 | |
| 76 | |
| 77 | /* Convert fc_port_type values to ascii string name */ |
| 78 | static struct { |
| 79 | enum fc_port_type value; |
| 80 | char *name; |
| 81 | } fc_port_type_names[] = { |
| 82 | { FC_PORTTYPE_UNKNOWN, "Unknown" }, |
| 83 | { FC_PORTTYPE_OTHER, "Other" }, |
| 84 | { FC_PORTTYPE_NOTPRESENT, "Not Present" }, |
| 85 | { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, |
| 86 | { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, |
| 87 | { FC_PORTTYPE_LPORT, "LPort (private loop)" }, |
| 88 | { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection" }, |
| 89 | }; |
| 90 | fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) |
| 91 | #define FC_PORTTYPE_MAX_NAMELEN 50 |
| 92 | |
| 93 | |
| 94 | /* Convert fc_port_state values to ascii string name */ |
| 95 | static struct { |
| 96 | enum fc_port_state value; |
| 97 | char *name; |
| 98 | } fc_port_state_names[] = { |
| 99 | { FC_PORTSTATE_UNKNOWN, "Unknown" }, |
| 100 | { FC_PORTSTATE_NOTPRESENT, "Not Present" }, |
| 101 | { FC_PORTSTATE_ONLINE, "Online" }, |
| 102 | { FC_PORTSTATE_OFFLINE, "Offline" }, |
| 103 | { FC_PORTSTATE_BLOCKED, "Blocked" }, |
| 104 | { FC_PORTSTATE_BYPASSED, "Bypassed" }, |
| 105 | { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, |
| 106 | { FC_PORTSTATE_LINKDOWN, "Linkdown" }, |
| 107 | { FC_PORTSTATE_ERROR, "Error" }, |
| 108 | { FC_PORTSTATE_LOOPBACK, "Loopback" }, |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 109 | { FC_PORTSTATE_DELETED, "Deleted" }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | }; |
| 111 | fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) |
| 112 | #define FC_PORTSTATE_MAX_NAMELEN 20 |
| 113 | |
| 114 | |
| 115 | /* Convert fc_tgtid_binding_type values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 116 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | enum fc_tgtid_binding_type value; |
| 118 | char *name; |
| 119 | int matchlen; |
| 120 | } fc_tgtid_binding_type_names[] = { |
| 121 | { FC_TGTID_BIND_NONE, "none", 4 }, |
| 122 | { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, |
| 123 | { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, |
| 124 | { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, |
| 125 | }; |
| 126 | fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, |
| 127 | fc_tgtid_binding_type_names) |
| 128 | fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, |
| 129 | fc_tgtid_binding_type_names) |
| 130 | #define FC_BINDTYPE_MAX_NAMELEN 30 |
| 131 | |
| 132 | |
| 133 | #define fc_bitfield_name_search(title, table) \ |
| 134 | static ssize_t \ |
| 135 | get_fc_##title##_names(u32 table_key, char *buf) \ |
| 136 | { \ |
| 137 | char *prefix = ""; \ |
| 138 | ssize_t len = 0; \ |
| 139 | int i; \ |
| 140 | \ |
| 141 | for (i = 0; i < sizeof(table)/sizeof(table[0]); i++) { \ |
| 142 | if (table[i].value & table_key) { \ |
| 143 | len += sprintf(buf + len, "%s%s", \ |
| 144 | prefix, table[i].name); \ |
| 145 | prefix = ", "; \ |
| 146 | } \ |
| 147 | } \ |
| 148 | len += sprintf(buf + len, "\n"); \ |
| 149 | return len; \ |
| 150 | } |
| 151 | |
| 152 | |
| 153 | /* Convert FC_COS bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 154 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | u32 value; |
| 156 | char *name; |
| 157 | } fc_cos_names[] = { |
| 158 | { FC_COS_CLASS1, "Class 1" }, |
| 159 | { FC_COS_CLASS2, "Class 2" }, |
| 160 | { FC_COS_CLASS3, "Class 3" }, |
| 161 | { FC_COS_CLASS4, "Class 4" }, |
| 162 | { FC_COS_CLASS6, "Class 6" }, |
| 163 | }; |
| 164 | fc_bitfield_name_search(cos, fc_cos_names) |
| 165 | |
| 166 | |
| 167 | /* Convert FC_PORTSPEED bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 168 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | u32 value; |
| 170 | char *name; |
| 171 | } fc_port_speed_names[] = { |
| 172 | { FC_PORTSPEED_1GBIT, "1 Gbit" }, |
| 173 | { FC_PORTSPEED_2GBIT, "2 Gbit" }, |
| 174 | { FC_PORTSPEED_4GBIT, "4 Gbit" }, |
| 175 | { FC_PORTSPEED_10GBIT, "10 Gbit" }, |
| 176 | { FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, |
| 177 | }; |
| 178 | fc_bitfield_name_search(port_speed, fc_port_speed_names) |
| 179 | |
| 180 | |
| 181 | static int |
| 182 | show_fc_fc4s (char *buf, u8 *fc4_list) |
| 183 | { |
| 184 | int i, len=0; |
| 185 | |
| 186 | for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) |
| 187 | len += sprintf(buf + len , "0x%02x ", *fc4_list); |
| 188 | len += sprintf(buf + len, "\n"); |
| 189 | return len; |
| 190 | } |
| 191 | |
| 192 | |
| 193 | /* Convert FC_RPORT_ROLE bit values to ascii string name */ |
Arjan van de Ven | 0ad7820 | 2005-11-28 16:22:25 +0100 | [diff] [blame] | 194 | static const struct { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | u32 value; |
| 196 | char *name; |
| 197 | } fc_remote_port_role_names[] = { |
| 198 | { FC_RPORT_ROLE_FCP_TARGET, "FCP Target" }, |
| 199 | { FC_RPORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, |
| 200 | { FC_RPORT_ROLE_IP_PORT, "IP Port" }, |
| 201 | }; |
| 202 | fc_bitfield_name_search(remote_port_roles, fc_remote_port_role_names) |
| 203 | |
| 204 | /* |
| 205 | * Define roles that are specific to port_id. Values are relative to ROLE_MASK. |
| 206 | */ |
| 207 | #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 |
| 208 | #define FC_WELLKNOWN_ROLE_MASK 0x00000f |
| 209 | #define FC_FPORT_PORTID 0x00000e |
| 210 | #define FC_FABCTLR_PORTID 0x00000d |
| 211 | #define FC_DIRSRVR_PORTID 0x00000c |
| 212 | #define FC_TIMESRVR_PORTID 0x00000b |
| 213 | #define FC_MGMTSRVR_PORTID 0x00000a |
| 214 | |
| 215 | |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 216 | static void fc_shost_remove_rports(void *data); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 217 | static void fc_timeout_deleted_rport(void *data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | static void fc_scsi_scan_rport(void *data); |
| 219 | static void fc_rport_terminate(struct fc_rport *rport); |
| 220 | |
| 221 | /* |
| 222 | * Attribute counts pre object type... |
| 223 | * Increase these values if you add attributes |
| 224 | */ |
| 225 | #define FC_STARGET_NUM_ATTRS 3 |
| 226 | #define FC_RPORT_NUM_ATTRS 9 |
Andreas Herrmann | ad139a2 | 2006-03-09 16:37:49 +0100 | [diff] [blame] | 227 | #define FC_HOST_NUM_ATTRS 17 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | |
| 229 | struct fc_internal { |
| 230 | struct scsi_transport_template t; |
| 231 | struct fc_function_template *f; |
| 232 | |
| 233 | /* |
| 234 | * For attributes : each object has : |
| 235 | * An array of the actual attributes structures |
| 236 | * An array of null-terminated pointers to the attribute |
| 237 | * structures - used for mid-layer interaction. |
| 238 | * |
| 239 | * The attribute containers for the starget and host are are |
| 240 | * part of the midlayer. As the remote port is specific to the |
| 241 | * fc transport, we must provide the attribute container. |
| 242 | */ |
| 243 | struct class_device_attribute private_starget_attrs[ |
| 244 | FC_STARGET_NUM_ATTRS]; |
| 245 | struct class_device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
| 246 | |
| 247 | struct class_device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
| 248 | struct class_device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; |
| 249 | |
| 250 | struct transport_container rport_attr_cont; |
| 251 | struct class_device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
| 252 | struct class_device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; |
| 253 | }; |
| 254 | |
| 255 | #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) |
| 256 | |
James Bottomley | d0a7e57 | 2005-08-14 17:09:01 -0500 | [diff] [blame] | 257 | static int fc_target_setup(struct transport_container *tc, struct device *dev, |
| 258 | struct class_device *cdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | { |
| 260 | struct scsi_target *starget = to_scsi_target(dev); |
| 261 | struct fc_rport *rport = starget_to_rport(starget); |
| 262 | |
| 263 | /* |
| 264 | * if parent is remote port, use values from remote port. |
| 265 | * Otherwise, this host uses the fc_transport, but not the |
| 266 | * remote port interface. As such, initialize to known non-values. |
| 267 | */ |
| 268 | if (rport) { |
| 269 | fc_starget_node_name(starget) = rport->node_name; |
| 270 | fc_starget_port_name(starget) = rport->port_name; |
| 271 | fc_starget_port_id(starget) = rport->port_id; |
| 272 | } else { |
| 273 | fc_starget_node_name(starget) = -1; |
| 274 | fc_starget_port_name(starget) = -1; |
| 275 | fc_starget_port_id(starget) = -1; |
| 276 | } |
| 277 | |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | static DECLARE_TRANSPORT_CLASS(fc_transport_class, |
| 282 | "fc_transport", |
| 283 | fc_target_setup, |
| 284 | NULL, |
| 285 | NULL); |
| 286 | |
James Bottomley | d0a7e57 | 2005-08-14 17:09:01 -0500 | [diff] [blame] | 287 | static int fc_host_setup(struct transport_container *tc, struct device *dev, |
| 288 | struct class_device *cdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { |
| 290 | struct Scsi_Host *shost = dev_to_shost(dev); |
| 291 | |
| 292 | /* |
| 293 | * Set default values easily detected by the midlayer as |
| 294 | * failure cases. The scsi lldd is responsible for initializing |
| 295 | * all transport attributes to valid values per host. |
| 296 | */ |
| 297 | fc_host_node_name(shost) = -1; |
| 298 | fc_host_port_name(shost) = -1; |
Andreas Herrmann | 6b7281d | 2006-01-13 02:16:54 +0100 | [diff] [blame] | 299 | fc_host_permanent_port_name(shost) = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | fc_host_supported_classes(shost) = FC_COS_UNSPECIFIED; |
| 301 | memset(fc_host_supported_fc4s(shost), 0, |
| 302 | sizeof(fc_host_supported_fc4s(shost))); |
| 303 | memset(fc_host_symbolic_name(shost), 0, |
| 304 | sizeof(fc_host_symbolic_name(shost))); |
| 305 | fc_host_supported_speeds(shost) = FC_PORTSPEED_UNKNOWN; |
| 306 | fc_host_maxframe_size(shost) = -1; |
| 307 | memset(fc_host_serial_number(shost), 0, |
| 308 | sizeof(fc_host_serial_number(shost))); |
| 309 | |
| 310 | fc_host_port_id(shost) = -1; |
| 311 | fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; |
| 312 | fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; |
| 313 | memset(fc_host_active_fc4s(shost), 0, |
| 314 | sizeof(fc_host_active_fc4s(shost))); |
| 315 | fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; |
| 316 | fc_host_fabric_name(shost) = -1; |
| 317 | |
| 318 | fc_host_tgtid_bind_type(shost) = FC_TGTID_BIND_BY_WWPN; |
| 319 | |
| 320 | INIT_LIST_HEAD(&fc_host_rports(shost)); |
| 321 | INIT_LIST_HEAD(&fc_host_rport_bindings(shost)); |
| 322 | fc_host_next_rport_number(shost) = 0; |
| 323 | fc_host_next_target_id(shost) = 0; |
| 324 | |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 325 | fc_host_flags(shost) = 0; |
| 326 | INIT_WORK(&fc_host_rport_del_work(shost), fc_shost_remove_rports, shost); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | static DECLARE_TRANSPORT_CLASS(fc_host_class, |
| 331 | "fc_host", |
| 332 | fc_host_setup, |
| 333 | NULL, |
| 334 | NULL); |
| 335 | |
| 336 | /* |
| 337 | * Setup and Remove actions for remote ports are handled |
| 338 | * in the service functions below. |
| 339 | */ |
| 340 | static DECLARE_TRANSPORT_CLASS(fc_rport_class, |
| 341 | "fc_remote_ports", |
| 342 | NULL, |
| 343 | NULL, |
| 344 | NULL); |
| 345 | |
| 346 | /* |
| 347 | * Module Parameters |
| 348 | */ |
| 349 | |
| 350 | /* |
| 351 | * dev_loss_tmo: the default number of seconds that the FC transport |
| 352 | * should insulate the loss of a remote port. |
| 353 | * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. |
| 354 | */ |
| 355 | static unsigned int fc_dev_loss_tmo = SCSI_DEVICE_BLOCK_MAX_TIMEOUT; |
| 356 | |
| 357 | module_param_named(dev_loss_tmo, fc_dev_loss_tmo, int, S_IRUGO|S_IWUSR); |
| 358 | MODULE_PARM_DESC(dev_loss_tmo, |
| 359 | "Maximum number of seconds that the FC transport should" |
| 360 | " insulate the loss of a remote port. Once this value is" |
| 361 | " exceeded, the scsi target is removed. Value should be" |
| 362 | " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT."); |
| 363 | |
| 364 | |
| 365 | static __init int fc_transport_init(void) |
| 366 | { |
| 367 | int error = transport_class_register(&fc_host_class); |
| 368 | if (error) |
| 369 | return error; |
| 370 | error = transport_class_register(&fc_rport_class); |
| 371 | if (error) |
| 372 | return error; |
| 373 | return transport_class_register(&fc_transport_class); |
| 374 | } |
| 375 | |
| 376 | static void __exit fc_transport_exit(void) |
| 377 | { |
| 378 | transport_class_unregister(&fc_transport_class); |
| 379 | transport_class_unregister(&fc_rport_class); |
| 380 | transport_class_unregister(&fc_host_class); |
| 381 | } |
| 382 | |
| 383 | /* |
| 384 | * FC Remote Port Attribute Management |
| 385 | */ |
| 386 | |
| 387 | #define fc_rport_show_function(field, format_string, sz, cast) \ |
| 388 | static ssize_t \ |
| 389 | show_fc_rport_##field (struct class_device *cdev, char *buf) \ |
| 390 | { \ |
| 391 | struct fc_rport *rport = transport_class_to_rport(cdev); \ |
| 392 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
| 393 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 394 | if ((i->f->get_rport_##field) && \ |
| 395 | !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 396 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 397 | (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | i->f->get_rport_##field(rport); \ |
| 399 | return snprintf(buf, sz, format_string, cast rport->field); \ |
| 400 | } |
| 401 | |
| 402 | #define fc_rport_store_function(field) \ |
| 403 | static ssize_t \ |
| 404 | store_fc_rport_##field(struct class_device *cdev, const char *buf, \ |
| 405 | size_t count) \ |
| 406 | { \ |
| 407 | int val; \ |
| 408 | struct fc_rport *rport = transport_class_to_rport(cdev); \ |
| 409 | struct Scsi_Host *shost = rport_to_shost(rport); \ |
| 410 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 411 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 412 | (rport->port_state == FC_PORTSTATE_DELETED) || \ |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 413 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
| 414 | return -EBUSY; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | val = simple_strtoul(buf, NULL, 0); \ |
| 416 | i->f->set_rport_##field(rport, val); \ |
| 417 | return count; \ |
| 418 | } |
| 419 | |
| 420 | #define fc_rport_rd_attr(field, format_string, sz) \ |
| 421 | fc_rport_show_function(field, format_string, sz, ) \ |
| 422 | static FC_CLASS_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 423 | show_fc_rport_##field, NULL) |
| 424 | |
| 425 | #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ |
| 426 | fc_rport_show_function(field, format_string, sz, (cast)) \ |
| 427 | static FC_CLASS_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 428 | show_fc_rport_##field, NULL) |
| 429 | |
| 430 | #define fc_rport_rw_attr(field, format_string, sz) \ |
| 431 | fc_rport_show_function(field, format_string, sz, ) \ |
| 432 | fc_rport_store_function(field) \ |
| 433 | static FC_CLASS_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
| 434 | show_fc_rport_##field, \ |
| 435 | store_fc_rport_##field) |
| 436 | |
| 437 | |
| 438 | #define fc_private_rport_show_function(field, format_string, sz, cast) \ |
| 439 | static ssize_t \ |
| 440 | show_fc_rport_##field (struct class_device *cdev, char *buf) \ |
| 441 | { \ |
| 442 | struct fc_rport *rport = transport_class_to_rport(cdev); \ |
| 443 | return snprintf(buf, sz, format_string, cast rport->field); \ |
| 444 | } |
| 445 | |
| 446 | #define fc_private_rport_rd_attr(field, format_string, sz) \ |
| 447 | fc_private_rport_show_function(field, format_string, sz, ) \ |
| 448 | static FC_CLASS_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 449 | show_fc_rport_##field, NULL) |
| 450 | |
| 451 | #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ |
| 452 | fc_private_rport_show_function(field, format_string, sz, (cast)) \ |
| 453 | static FC_CLASS_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 454 | show_fc_rport_##field, NULL) |
| 455 | |
| 456 | |
| 457 | #define fc_private_rport_rd_enum_attr(title, maxlen) \ |
| 458 | static ssize_t \ |
| 459 | show_fc_rport_##title (struct class_device *cdev, char *buf) \ |
| 460 | { \ |
| 461 | struct fc_rport *rport = transport_class_to_rport(cdev); \ |
| 462 | const char *name; \ |
| 463 | name = get_fc_##title##_name(rport->title); \ |
| 464 | if (!name) \ |
| 465 | return -EINVAL; \ |
| 466 | return snprintf(buf, maxlen, "%s\n", name); \ |
| 467 | } \ |
| 468 | static FC_CLASS_DEVICE_ATTR(rport, title, S_IRUGO, \ |
| 469 | show_fc_rport_##title, NULL) |
| 470 | |
| 471 | |
| 472 | #define SETUP_RPORT_ATTRIBUTE_RD(field) \ |
| 473 | i->private_rport_attrs[count] = class_device_attr_rport_##field; \ |
| 474 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 475 | i->private_rport_attrs[count].store = NULL; \ |
| 476 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 477 | if (i->f->show_rport_##field) \ |
| 478 | count++ |
| 479 | |
| 480 | #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ |
| 481 | i->private_rport_attrs[count] = class_device_attr_rport_##field; \ |
| 482 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 483 | i->private_rport_attrs[count].store = NULL; \ |
| 484 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 485 | count++ |
| 486 | |
| 487 | #define SETUP_RPORT_ATTRIBUTE_RW(field) \ |
| 488 | i->private_rport_attrs[count] = class_device_attr_rport_##field; \ |
| 489 | if (!i->f->set_rport_##field) { \ |
| 490 | i->private_rport_attrs[count].attr.mode = S_IRUGO; \ |
| 491 | i->private_rport_attrs[count].store = NULL; \ |
| 492 | } \ |
| 493 | i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| 494 | if (i->f->show_rport_##field) \ |
| 495 | count++ |
| 496 | |
| 497 | |
| 498 | /* The FC Transport Remote Port Attributes: */ |
| 499 | |
| 500 | /* Fixed Remote Port Attributes */ |
| 501 | |
| 502 | fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); |
| 503 | |
| 504 | static ssize_t |
| 505 | show_fc_rport_supported_classes (struct class_device *cdev, char *buf) |
| 506 | { |
| 507 | struct fc_rport *rport = transport_class_to_rport(cdev); |
| 508 | if (rport->supported_classes == FC_COS_UNSPECIFIED) |
| 509 | return snprintf(buf, 20, "unspecified\n"); |
| 510 | return get_fc_cos_names(rport->supported_classes, buf); |
| 511 | } |
| 512 | static FC_CLASS_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
| 513 | show_fc_rport_supported_classes, NULL); |
| 514 | |
| 515 | /* Dynamic Remote Port Attributes */ |
| 516 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 517 | /* |
| 518 | * dev_loss_tmo attribute |
| 519 | */ |
| 520 | fc_rport_show_function(dev_loss_tmo, "%d\n", 20, ) |
| 521 | static ssize_t |
| 522 | store_fc_rport_dev_loss_tmo(struct class_device *cdev, const char *buf, |
| 523 | size_t count) |
| 524 | { |
| 525 | int val; |
| 526 | struct fc_rport *rport = transport_class_to_rport(cdev); |
| 527 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 528 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 529 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 530 | (rport->port_state == FC_PORTSTATE_DELETED) || |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 531 | (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
| 532 | return -EBUSY; |
| 533 | val = simple_strtoul(buf, NULL, 0); |
| 534 | if ((val < 0) || (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) |
| 535 | return -EINVAL; |
| 536 | i->f->set_rport_dev_loss_tmo(rport, val); |
| 537 | return count; |
| 538 | } |
| 539 | static FC_CLASS_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
| 540 | show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | |
| 542 | |
| 543 | /* Private Remote Port Attributes */ |
| 544 | |
| 545 | fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 546 | fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| 547 | fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); |
| 548 | |
| 549 | static ssize_t |
| 550 | show_fc_rport_roles (struct class_device *cdev, char *buf) |
| 551 | { |
| 552 | struct fc_rport *rport = transport_class_to_rport(cdev); |
| 553 | |
| 554 | /* identify any roles that are port_id specific */ |
| 555 | if ((rport->port_id != -1) && |
| 556 | (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == |
| 557 | FC_WELLKNOWN_PORTID_MASK) { |
| 558 | switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { |
| 559 | case FC_FPORT_PORTID: |
| 560 | return snprintf(buf, 30, "Fabric Port\n"); |
| 561 | case FC_FABCTLR_PORTID: |
| 562 | return snprintf(buf, 30, "Fabric Controller\n"); |
| 563 | case FC_DIRSRVR_PORTID: |
| 564 | return snprintf(buf, 30, "Directory Server\n"); |
| 565 | case FC_TIMESRVR_PORTID: |
| 566 | return snprintf(buf, 30, "Time Server\n"); |
| 567 | case FC_MGMTSRVR_PORTID: |
| 568 | return snprintf(buf, 30, "Management Server\n"); |
| 569 | default: |
| 570 | return snprintf(buf, 30, "Unknown Fabric Entity\n"); |
| 571 | } |
| 572 | } else { |
| 573 | if (rport->roles == FC_RPORT_ROLE_UNKNOWN) |
| 574 | return snprintf(buf, 20, "unknown\n"); |
| 575 | return get_fc_remote_port_roles_names(rport->roles, buf); |
| 576 | } |
| 577 | } |
| 578 | static FC_CLASS_DEVICE_ATTR(rport, roles, S_IRUGO, |
| 579 | show_fc_rport_roles, NULL); |
| 580 | |
| 581 | fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); |
| 582 | fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); |
| 583 | |
| 584 | |
| 585 | |
| 586 | /* |
| 587 | * FC SCSI Target Attribute Management |
| 588 | */ |
| 589 | |
| 590 | /* |
| 591 | * Note: in the target show function we recognize when the remote |
| 592 | * port is in the heirarchy and do not allow the driver to get |
| 593 | * involved in sysfs functions. The driver only gets involved if |
| 594 | * it's the "old" style that doesn't use rports. |
| 595 | */ |
| 596 | #define fc_starget_show_function(field, format_string, sz, cast) \ |
| 597 | static ssize_t \ |
| 598 | show_fc_starget_##field (struct class_device *cdev, char *buf) \ |
| 599 | { \ |
| 600 | struct scsi_target *starget = transport_class_to_starget(cdev); \ |
| 601 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ |
| 602 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 603 | struct fc_rport *rport = starget_to_rport(starget); \ |
| 604 | if (rport) \ |
| 605 | fc_starget_##field(starget) = rport->field; \ |
| 606 | else if (i->f->get_starget_##field) \ |
| 607 | i->f->get_starget_##field(starget); \ |
| 608 | return snprintf(buf, sz, format_string, \ |
| 609 | cast fc_starget_##field(starget)); \ |
| 610 | } |
| 611 | |
| 612 | #define fc_starget_rd_attr(field, format_string, sz) \ |
| 613 | fc_starget_show_function(field, format_string, sz, ) \ |
| 614 | static FC_CLASS_DEVICE_ATTR(starget, field, S_IRUGO, \ |
| 615 | show_fc_starget_##field, NULL) |
| 616 | |
| 617 | #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ |
| 618 | fc_starget_show_function(field, format_string, sz, (cast)) \ |
| 619 | static FC_CLASS_DEVICE_ATTR(starget, field, S_IRUGO, \ |
| 620 | show_fc_starget_##field, NULL) |
| 621 | |
| 622 | #define SETUP_STARGET_ATTRIBUTE_RD(field) \ |
| 623 | i->private_starget_attrs[count] = class_device_attr_starget_##field; \ |
| 624 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
| 625 | i->private_starget_attrs[count].store = NULL; \ |
| 626 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ |
| 627 | if (i->f->show_starget_##field) \ |
| 628 | count++ |
| 629 | |
| 630 | #define SETUP_STARGET_ATTRIBUTE_RW(field) \ |
| 631 | i->private_starget_attrs[count] = class_device_attr_starget_##field; \ |
| 632 | if (!i->f->set_starget_##field) { \ |
| 633 | i->private_starget_attrs[count].attr.mode = S_IRUGO; \ |
| 634 | i->private_starget_attrs[count].store = NULL; \ |
| 635 | } \ |
| 636 | i->starget_attrs[count] = &i->private_starget_attrs[count]; \ |
| 637 | if (i->f->show_starget_##field) \ |
| 638 | count++ |
| 639 | |
| 640 | /* The FC Transport SCSI Target Attributes: */ |
| 641 | fc_starget_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 642 | fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| 643 | fc_starget_rd_attr(port_id, "0x%06x\n", 20); |
| 644 | |
| 645 | |
| 646 | /* |
| 647 | * Host Attribute Management |
| 648 | */ |
| 649 | |
| 650 | #define fc_host_show_function(field, format_string, sz, cast) \ |
| 651 | static ssize_t \ |
| 652 | show_fc_host_##field (struct class_device *cdev, char *buf) \ |
| 653 | { \ |
| 654 | struct Scsi_Host *shost = transport_class_to_shost(cdev); \ |
| 655 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 656 | if (i->f->get_host_##field) \ |
| 657 | i->f->get_host_##field(shost); \ |
| 658 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
| 659 | } |
| 660 | |
| 661 | #define fc_host_store_function(field) \ |
| 662 | static ssize_t \ |
| 663 | store_fc_host_##field(struct class_device *cdev, const char *buf, \ |
| 664 | size_t count) \ |
| 665 | { \ |
| 666 | int val; \ |
| 667 | struct Scsi_Host *shost = transport_class_to_shost(cdev); \ |
| 668 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 669 | \ |
| 670 | val = simple_strtoul(buf, NULL, 0); \ |
| 671 | i->f->set_host_##field(shost, val); \ |
| 672 | return count; \ |
| 673 | } |
| 674 | |
| 675 | #define fc_host_rd_attr(field, format_string, sz) \ |
| 676 | fc_host_show_function(field, format_string, sz, ) \ |
| 677 | static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 678 | show_fc_host_##field, NULL) |
| 679 | |
| 680 | #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ |
| 681 | fc_host_show_function(field, format_string, sz, (cast)) \ |
| 682 | static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 683 | show_fc_host_##field, NULL) |
| 684 | |
| 685 | #define fc_host_rw_attr(field, format_string, sz) \ |
| 686 | fc_host_show_function(field, format_string, sz, ) \ |
| 687 | fc_host_store_function(field) \ |
| 688 | static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
| 689 | show_fc_host_##field, \ |
| 690 | store_fc_host_##field) |
| 691 | |
| 692 | #define fc_host_rd_enum_attr(title, maxlen) \ |
| 693 | static ssize_t \ |
| 694 | show_fc_host_##title (struct class_device *cdev, char *buf) \ |
| 695 | { \ |
| 696 | struct Scsi_Host *shost = transport_class_to_shost(cdev); \ |
| 697 | struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| 698 | const char *name; \ |
| 699 | if (i->f->get_host_##title) \ |
| 700 | i->f->get_host_##title(shost); \ |
| 701 | name = get_fc_##title##_name(fc_host_##title(shost)); \ |
| 702 | if (!name) \ |
| 703 | return -EINVAL; \ |
| 704 | return snprintf(buf, maxlen, "%s\n", name); \ |
| 705 | } \ |
| 706 | static FC_CLASS_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
| 707 | |
| 708 | #define SETUP_HOST_ATTRIBUTE_RD(field) \ |
| 709 | i->private_host_attrs[count] = class_device_attr_host_##field; \ |
| 710 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 711 | i->private_host_attrs[count].store = NULL; \ |
| 712 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 713 | if (i->f->show_host_##field) \ |
| 714 | count++ |
| 715 | |
| 716 | #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
| 717 | i->private_host_attrs[count] = class_device_attr_host_##field; \ |
| 718 | if (!i->f->set_host_##field) { \ |
| 719 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 720 | i->private_host_attrs[count].store = NULL; \ |
| 721 | } \ |
| 722 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 723 | if (i->f->show_host_##field) \ |
| 724 | count++ |
| 725 | |
| 726 | |
| 727 | #define fc_private_host_show_function(field, format_string, sz, cast) \ |
| 728 | static ssize_t \ |
| 729 | show_fc_host_##field (struct class_device *cdev, char *buf) \ |
| 730 | { \ |
| 731 | struct Scsi_Host *shost = transport_class_to_shost(cdev); \ |
| 732 | return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ |
| 733 | } |
| 734 | |
| 735 | #define fc_private_host_rd_attr(field, format_string, sz) \ |
| 736 | fc_private_host_show_function(field, format_string, sz, ) \ |
| 737 | static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 738 | show_fc_host_##field, NULL) |
| 739 | |
| 740 | #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ |
| 741 | fc_private_host_show_function(field, format_string, sz, (cast)) \ |
| 742 | static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 743 | show_fc_host_##field, NULL) |
| 744 | |
| 745 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ |
| 746 | i->private_host_attrs[count] = class_device_attr_host_##field; \ |
| 747 | i->private_host_attrs[count].attr.mode = S_IRUGO; \ |
| 748 | i->private_host_attrs[count].store = NULL; \ |
| 749 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| 750 | count++ |
| 751 | |
| 752 | #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 753 | { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | i->private_host_attrs[count] = class_device_attr_host_##field; \ |
| 755 | i->host_attrs[count] = &i->private_host_attrs[count]; \ |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 756 | count++; \ |
| 757 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
| 759 | |
| 760 | /* Fixed Host Attributes */ |
| 761 | |
| 762 | static ssize_t |
| 763 | show_fc_host_supported_classes (struct class_device *cdev, char *buf) |
| 764 | { |
| 765 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 766 | |
| 767 | if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) |
| 768 | return snprintf(buf, 20, "unspecified\n"); |
| 769 | |
| 770 | return get_fc_cos_names(fc_host_supported_classes(shost), buf); |
| 771 | } |
| 772 | static FC_CLASS_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
| 773 | show_fc_host_supported_classes, NULL); |
| 774 | |
| 775 | static ssize_t |
| 776 | show_fc_host_supported_fc4s (struct class_device *cdev, char *buf) |
| 777 | { |
| 778 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 779 | return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
| 780 | } |
| 781 | static FC_CLASS_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
| 782 | show_fc_host_supported_fc4s, NULL); |
| 783 | |
| 784 | static ssize_t |
| 785 | show_fc_host_supported_speeds (struct class_device *cdev, char *buf) |
| 786 | { |
| 787 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 788 | |
| 789 | if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) |
| 790 | return snprintf(buf, 20, "unknown\n"); |
| 791 | |
| 792 | return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); |
| 793 | } |
| 794 | static FC_CLASS_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
| 795 | show_fc_host_supported_speeds, NULL); |
| 796 | |
| 797 | |
| 798 | fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| 799 | fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
Andreas Herrmann | 6b7281d | 2006-01-13 02:16:54 +0100 | [diff] [blame] | 800 | fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
| 801 | unsigned long long); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | fc_private_host_rd_attr(symbolic_name, "%s\n", (FC_SYMBOLIC_NAME_SIZE +1)); |
| 803 | fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
| 804 | fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
| 805 | |
| 806 | |
| 807 | /* Dynamic Host Attributes */ |
| 808 | |
| 809 | static ssize_t |
| 810 | show_fc_host_active_fc4s (struct class_device *cdev, char *buf) |
| 811 | { |
| 812 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 813 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 814 | |
| 815 | if (i->f->get_host_active_fc4s) |
| 816 | i->f->get_host_active_fc4s(shost); |
| 817 | |
| 818 | return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); |
| 819 | } |
| 820 | static FC_CLASS_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
| 821 | show_fc_host_active_fc4s, NULL); |
| 822 | |
| 823 | static ssize_t |
| 824 | show_fc_host_speed (struct class_device *cdev, char *buf) |
| 825 | { |
| 826 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 827 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 828 | |
| 829 | if (i->f->get_host_speed) |
| 830 | i->f->get_host_speed(shost); |
| 831 | |
| 832 | if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) |
| 833 | return snprintf(buf, 20, "unknown\n"); |
| 834 | |
| 835 | return get_fc_port_speed_names(fc_host_speed(shost), buf); |
| 836 | } |
| 837 | static FC_CLASS_DEVICE_ATTR(host, speed, S_IRUGO, |
| 838 | show_fc_host_speed, NULL); |
| 839 | |
| 840 | |
| 841 | fc_host_rd_attr(port_id, "0x%06x\n", 20); |
| 842 | fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); |
| 843 | fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); |
| 844 | fc_host_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long); |
| 845 | |
| 846 | |
| 847 | /* Private Host Attributes */ |
| 848 | |
| 849 | static ssize_t |
| 850 | show_fc_private_host_tgtid_bind_type(struct class_device *cdev, char *buf) |
| 851 | { |
| 852 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 853 | const char *name; |
| 854 | |
| 855 | name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); |
| 856 | if (!name) |
| 857 | return -EINVAL; |
| 858 | return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s\n", name); |
| 859 | } |
| 860 | |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 861 | #define get_list_head_entry(pos, head, member) \ |
| 862 | pos = list_entry((head)->next, typeof(*pos), member) |
| 863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | static ssize_t |
| 865 | store_fc_private_host_tgtid_bind_type(struct class_device *cdev, |
| 866 | const char *buf, size_t count) |
| 867 | { |
| 868 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 869 | struct fc_rport *rport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | enum fc_tgtid_binding_type val; |
| 871 | unsigned long flags; |
| 872 | |
| 873 | if (get_fc_tgtid_bind_type_match(buf, &val)) |
| 874 | return -EINVAL; |
| 875 | |
| 876 | /* if changing bind type, purge all unused consistent bindings */ |
| 877 | if (val != fc_host_tgtid_bind_type(shost)) { |
| 878 | spin_lock_irqsave(shost->host_lock, flags); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 879 | while (!list_empty(&fc_host_rport_bindings(shost))) { |
| 880 | get_list_head_entry(rport, |
| 881 | &fc_host_rport_bindings(shost), peers); |
| 882 | spin_unlock_irqrestore(shost->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | fc_rport_terminate(rport); |
James.Smart@Emulex.Com | d16794f6a | 2005-10-05 13:50:08 -0400 | [diff] [blame] | 884 | spin_lock_irqsave(shost->host_lock, flags); |
| 885 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 887 | } |
| 888 | |
| 889 | fc_host_tgtid_bind_type(shost) = val; |
| 890 | return count; |
| 891 | } |
| 892 | |
| 893 | static FC_CLASS_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
| 894 | show_fc_private_host_tgtid_bind_type, |
| 895 | store_fc_private_host_tgtid_bind_type); |
| 896 | |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 897 | static ssize_t |
| 898 | store_fc_private_host_issue_lip(struct class_device *cdev, |
| 899 | const char *buf, size_t count) |
| 900 | { |
| 901 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 902 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 903 | int ret; |
| 904 | |
| 905 | /* ignore any data value written to the attribute */ |
| 906 | if (i->f->issue_fc_host_lip) { |
| 907 | ret = i->f->issue_fc_host_lip(shost); |
| 908 | return ret ? ret: count; |
| 909 | } |
| 910 | |
| 911 | return -ENOENT; |
| 912 | } |
| 913 | |
| 914 | static FC_CLASS_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
| 915 | store_fc_private_host_issue_lip); |
| 916 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | /* |
| 918 | * Host Statistics Management |
| 919 | */ |
| 920 | |
| 921 | /* Show a given an attribute in the statistics group */ |
| 922 | static ssize_t |
| 923 | fc_stat_show(const struct class_device *cdev, char *buf, unsigned long offset) |
| 924 | { |
| 925 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 926 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 927 | struct fc_host_statistics *stats; |
| 928 | ssize_t ret = -ENOENT; |
| 929 | |
| 930 | if (offset > sizeof(struct fc_host_statistics) || |
| 931 | offset % sizeof(u64) != 0) |
| 932 | WARN_ON(1); |
| 933 | |
| 934 | if (i->f->get_fc_host_stats) { |
| 935 | stats = (i->f->get_fc_host_stats)(shost); |
| 936 | if (stats) |
| 937 | ret = snprintf(buf, 20, "0x%llx\n", |
| 938 | (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); |
| 939 | } |
| 940 | return ret; |
| 941 | } |
| 942 | |
| 943 | |
| 944 | /* generate a read-only statistics attribute */ |
| 945 | #define fc_host_statistic(name) \ |
| 946 | static ssize_t show_fcstat_##name(struct class_device *cd, char *buf) \ |
| 947 | { \ |
| 948 | return fc_stat_show(cd, buf, \ |
| 949 | offsetof(struct fc_host_statistics, name)); \ |
| 950 | } \ |
| 951 | static FC_CLASS_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
| 952 | |
| 953 | fc_host_statistic(seconds_since_last_reset); |
| 954 | fc_host_statistic(tx_frames); |
| 955 | fc_host_statistic(tx_words); |
| 956 | fc_host_statistic(rx_frames); |
| 957 | fc_host_statistic(rx_words); |
| 958 | fc_host_statistic(lip_count); |
| 959 | fc_host_statistic(nos_count); |
| 960 | fc_host_statistic(error_frames); |
| 961 | fc_host_statistic(dumped_frames); |
| 962 | fc_host_statistic(link_failure_count); |
| 963 | fc_host_statistic(loss_of_sync_count); |
| 964 | fc_host_statistic(loss_of_signal_count); |
| 965 | fc_host_statistic(prim_seq_protocol_err_count); |
| 966 | fc_host_statistic(invalid_tx_word_count); |
| 967 | fc_host_statistic(invalid_crc_count); |
| 968 | fc_host_statistic(fcp_input_requests); |
| 969 | fc_host_statistic(fcp_output_requests); |
| 970 | fc_host_statistic(fcp_control_requests); |
| 971 | fc_host_statistic(fcp_input_megabytes); |
| 972 | fc_host_statistic(fcp_output_megabytes); |
| 973 | |
| 974 | static ssize_t |
| 975 | fc_reset_statistics(struct class_device *cdev, const char *buf, |
| 976 | size_t count) |
| 977 | { |
| 978 | struct Scsi_Host *shost = transport_class_to_shost(cdev); |
| 979 | struct fc_internal *i = to_fc_internal(shost->transportt); |
| 980 | |
| 981 | /* ignore any data value written to the attribute */ |
| 982 | if (i->f->reset_fc_host_stats) { |
| 983 | i->f->reset_fc_host_stats(shost); |
| 984 | return count; |
| 985 | } |
| 986 | |
| 987 | return -ENOENT; |
| 988 | } |
| 989 | static FC_CLASS_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
| 990 | fc_reset_statistics); |
| 991 | |
| 992 | |
| 993 | static struct attribute *fc_statistics_attrs[] = { |
| 994 | &class_device_attr_host_seconds_since_last_reset.attr, |
| 995 | &class_device_attr_host_tx_frames.attr, |
| 996 | &class_device_attr_host_tx_words.attr, |
| 997 | &class_device_attr_host_rx_frames.attr, |
| 998 | &class_device_attr_host_rx_words.attr, |
| 999 | &class_device_attr_host_lip_count.attr, |
| 1000 | &class_device_attr_host_nos_count.attr, |
| 1001 | &class_device_attr_host_error_frames.attr, |
| 1002 | &class_device_attr_host_dumped_frames.attr, |
| 1003 | &class_device_attr_host_link_failure_count.attr, |
| 1004 | &class_device_attr_host_loss_of_sync_count.attr, |
| 1005 | &class_device_attr_host_loss_of_signal_count.attr, |
| 1006 | &class_device_attr_host_prim_seq_protocol_err_count.attr, |
| 1007 | &class_device_attr_host_invalid_tx_word_count.attr, |
| 1008 | &class_device_attr_host_invalid_crc_count.attr, |
| 1009 | &class_device_attr_host_fcp_input_requests.attr, |
| 1010 | &class_device_attr_host_fcp_output_requests.attr, |
| 1011 | &class_device_attr_host_fcp_control_requests.attr, |
| 1012 | &class_device_attr_host_fcp_input_megabytes.attr, |
| 1013 | &class_device_attr_host_fcp_output_megabytes.attr, |
| 1014 | &class_device_attr_host_reset_statistics.attr, |
| 1015 | NULL |
| 1016 | }; |
| 1017 | |
| 1018 | static struct attribute_group fc_statistics_group = { |
| 1019 | .name = "statistics", |
| 1020 | .attrs = fc_statistics_attrs, |
| 1021 | }; |
| 1022 | |
| 1023 | static int fc_host_match(struct attribute_container *cont, |
| 1024 | struct device *dev) |
| 1025 | { |
| 1026 | struct Scsi_Host *shost; |
| 1027 | struct fc_internal *i; |
| 1028 | |
| 1029 | if (!scsi_is_host_device(dev)) |
| 1030 | return 0; |
| 1031 | |
| 1032 | shost = dev_to_shost(dev); |
| 1033 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1034 | != &fc_host_class.class) |
| 1035 | return 0; |
| 1036 | |
| 1037 | i = to_fc_internal(shost->transportt); |
| 1038 | |
| 1039 | return &i->t.host_attrs.ac == cont; |
| 1040 | } |
| 1041 | |
| 1042 | static int fc_target_match(struct attribute_container *cont, |
| 1043 | struct device *dev) |
| 1044 | { |
| 1045 | struct Scsi_Host *shost; |
| 1046 | struct fc_internal *i; |
| 1047 | |
| 1048 | if (!scsi_is_target_device(dev)) |
| 1049 | return 0; |
| 1050 | |
| 1051 | shost = dev_to_shost(dev->parent); |
| 1052 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1053 | != &fc_host_class.class) |
| 1054 | return 0; |
| 1055 | |
| 1056 | i = to_fc_internal(shost->transportt); |
| 1057 | |
| 1058 | return &i->t.target_attrs.ac == cont; |
| 1059 | } |
| 1060 | |
| 1061 | static void fc_rport_dev_release(struct device *dev) |
| 1062 | { |
| 1063 | struct fc_rport *rport = dev_to_rport(dev); |
| 1064 | put_device(dev->parent); |
| 1065 | kfree(rport); |
| 1066 | } |
| 1067 | |
| 1068 | int scsi_is_fc_rport(const struct device *dev) |
| 1069 | { |
| 1070 | return dev->release == fc_rport_dev_release; |
| 1071 | } |
| 1072 | EXPORT_SYMBOL(scsi_is_fc_rport); |
| 1073 | |
| 1074 | static int fc_rport_match(struct attribute_container *cont, |
| 1075 | struct device *dev) |
| 1076 | { |
| 1077 | struct Scsi_Host *shost; |
| 1078 | struct fc_internal *i; |
| 1079 | |
| 1080 | if (!scsi_is_fc_rport(dev)) |
| 1081 | return 0; |
| 1082 | |
| 1083 | shost = dev_to_shost(dev->parent); |
| 1084 | if (!shost->transportt || shost->transportt->host_attrs.ac.class |
| 1085 | != &fc_host_class.class) |
| 1086 | return 0; |
| 1087 | |
| 1088 | i = to_fc_internal(shost->transportt); |
| 1089 | |
| 1090 | return &i->rport_attr_cont.ac == cont; |
| 1091 | } |
| 1092 | |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1093 | |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 1094 | /** |
| 1095 | * fc_timed_out - FC Transport I/O timeout intercept handler |
| 1096 | * |
| 1097 | * @scmd: The SCSI command which timed out |
| 1098 | * |
| 1099 | * This routine protects against error handlers getting invoked while a |
| 1100 | * rport is in a blocked state, typically due to a temporarily loss of |
| 1101 | * connectivity. If the error handlers are allowed to proceed, requests |
| 1102 | * to abort i/o, reset the target, etc will likely fail as there is no way |
| 1103 | * to communicate with the device to perform the requested function. These |
| 1104 | * failures may result in the midlayer taking the device offline, requiring |
| 1105 | * manual intervention to restore operation. |
| 1106 | * |
| 1107 | * This routine, called whenever an i/o times out, validates the state of |
| 1108 | * the underlying rport. If the rport is blocked, it returns |
| 1109 | * EH_RESET_TIMER, which will continue to reschedule the timeout. |
| 1110 | * Eventually, either the device will return, or devloss_tmo will fire, |
| 1111 | * and when the timeout then fires, it will be handled normally. |
| 1112 | * If the rport is not blocked, normal error handling continues. |
| 1113 | * |
| 1114 | * Notes: |
| 1115 | * This routine assumes no locks are held on entry. |
| 1116 | **/ |
| 1117 | static enum scsi_eh_timer_return |
| 1118 | fc_timed_out(struct scsi_cmnd *scmd) |
| 1119 | { |
| 1120 | struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); |
| 1121 | |
| 1122 | if (rport->port_state == FC_PORTSTATE_BLOCKED) |
| 1123 | return EH_RESET_TIMER; |
| 1124 | |
| 1125 | return EH_NOT_HANDLED; |
| 1126 | } |
| 1127 | |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1128 | /* |
| 1129 | * Must be called with shost->host_lock held |
| 1130 | */ |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1131 | static int fc_user_scan(struct Scsi_Host *shost, uint channel, |
| 1132 | uint id, uint lun) |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1133 | { |
| 1134 | struct fc_rport *rport; |
| 1135 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1136 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
| 1137 | if (rport->scsi_target_id == -1) |
| 1138 | continue; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1139 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1140 | if ((channel == SCAN_WILD_CARD || channel == rport->channel) && |
| 1141 | (id == SCAN_WILD_CARD || id == rport->scsi_target_id)) { |
| 1142 | scsi_scan_target(&rport->dev, rport->channel, |
| 1143 | rport->scsi_target_id, lun, 1); |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | return 0; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1148 | } |
| 1149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1150 | struct scsi_transport_template * |
| 1151 | fc_attach_transport(struct fc_function_template *ft) |
| 1152 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | int count; |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 1154 | struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
| 1155 | GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | |
| 1157 | if (unlikely(!i)) |
| 1158 | return NULL; |
| 1159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; |
| 1161 | i->t.target_attrs.ac.class = &fc_transport_class.class; |
| 1162 | i->t.target_attrs.ac.match = fc_target_match; |
| 1163 | i->t.target_size = sizeof(struct fc_starget_attrs); |
| 1164 | transport_container_register(&i->t.target_attrs); |
| 1165 | |
| 1166 | i->t.host_attrs.ac.attrs = &i->host_attrs[0]; |
| 1167 | i->t.host_attrs.ac.class = &fc_host_class.class; |
| 1168 | i->t.host_attrs.ac.match = fc_host_match; |
| 1169 | i->t.host_size = sizeof(struct fc_host_attrs); |
| 1170 | if (ft->get_fc_host_stats) |
| 1171 | i->t.host_attrs.statistics = &fc_statistics_group; |
| 1172 | transport_container_register(&i->t.host_attrs); |
| 1173 | |
| 1174 | i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; |
| 1175 | i->rport_attr_cont.ac.class = &fc_rport_class.class; |
| 1176 | i->rport_attr_cont.ac.match = fc_rport_match; |
| 1177 | transport_container_register(&i->rport_attr_cont); |
| 1178 | |
| 1179 | i->f = ft; |
| 1180 | |
| 1181 | /* Transport uses the shost workq for scsi scanning */ |
| 1182 | i->t.create_work_queue = 1; |
James.Smart@Emulex.Com | 5c44cd2 | 2005-06-10 22:24:30 -0400 | [diff] [blame] | 1183 | |
James Smart | c829c39 | 2006-03-13 08:28:57 -0500 | [diff] [blame] | 1184 | i->t.eh_timed_out = fc_timed_out; |
| 1185 | |
Christoph Hellwig | e02f3f5 | 2006-01-13 19:04:00 +0100 | [diff] [blame] | 1186 | i->t.user_scan = fc_user_scan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | |
| 1188 | /* |
| 1189 | * Setup SCSI Target Attributes. |
| 1190 | */ |
| 1191 | count = 0; |
| 1192 | SETUP_STARGET_ATTRIBUTE_RD(node_name); |
| 1193 | SETUP_STARGET_ATTRIBUTE_RD(port_name); |
| 1194 | SETUP_STARGET_ATTRIBUTE_RD(port_id); |
| 1195 | |
| 1196 | BUG_ON(count > FC_STARGET_NUM_ATTRS); |
| 1197 | |
| 1198 | i->starget_attrs[count] = NULL; |
| 1199 | |
| 1200 | |
| 1201 | /* |
| 1202 | * Setup SCSI Host Attributes. |
| 1203 | */ |
| 1204 | count=0; |
| 1205 | SETUP_HOST_ATTRIBUTE_RD(node_name); |
| 1206 | SETUP_HOST_ATTRIBUTE_RD(port_name); |
Andreas Herrmann | 6b7281d | 2006-01-13 02:16:54 +0100 | [diff] [blame] | 1207 | SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
| 1209 | SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); |
| 1210 | SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
| 1211 | SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
| 1212 | SETUP_HOST_ATTRIBUTE_RD(maxframe_size); |
| 1213 | SETUP_HOST_ATTRIBUTE_RD(serial_number); |
| 1214 | |
| 1215 | SETUP_HOST_ATTRIBUTE_RD(port_id); |
| 1216 | SETUP_HOST_ATTRIBUTE_RD(port_type); |
| 1217 | SETUP_HOST_ATTRIBUTE_RD(port_state); |
| 1218 | SETUP_HOST_ATTRIBUTE_RD(active_fc4s); |
| 1219 | SETUP_HOST_ATTRIBUTE_RD(speed); |
| 1220 | SETUP_HOST_ATTRIBUTE_RD(fabric_name); |
| 1221 | |
| 1222 | /* Transport-managed attributes */ |
| 1223 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
Andrew Vasquez | 91ca7b0 | 2005-10-27 16:03:37 -0700 | [diff] [blame] | 1224 | if (ft->issue_fc_host_lip) |
| 1225 | SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | |
| 1227 | BUG_ON(count > FC_HOST_NUM_ATTRS); |
| 1228 | |
| 1229 | i->host_attrs[count] = NULL; |
| 1230 | |
| 1231 | /* |
| 1232 | * Setup Remote Port Attributes. |
| 1233 | */ |
| 1234 | count=0; |
| 1235 | SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); |
| 1236 | SETUP_RPORT_ATTRIBUTE_RD(supported_classes); |
| 1237 | SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); |
| 1238 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); |
| 1239 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); |
| 1240 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); |
| 1241 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); |
| 1242 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); |
| 1243 | SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); |
| 1244 | |
| 1245 | BUG_ON(count > FC_RPORT_NUM_ATTRS); |
| 1246 | |
| 1247 | i->rport_attrs[count] = NULL; |
| 1248 | |
| 1249 | return &i->t; |
| 1250 | } |
| 1251 | EXPORT_SYMBOL(fc_attach_transport); |
| 1252 | |
| 1253 | void fc_release_transport(struct scsi_transport_template *t) |
| 1254 | { |
| 1255 | struct fc_internal *i = to_fc_internal(t); |
| 1256 | |
| 1257 | transport_container_unregister(&i->t.target_attrs); |
| 1258 | transport_container_unregister(&i->t.host_attrs); |
| 1259 | transport_container_unregister(&i->rport_attr_cont); |
| 1260 | |
| 1261 | kfree(i); |
| 1262 | } |
| 1263 | EXPORT_SYMBOL(fc_release_transport); |
| 1264 | |
| 1265 | |
| 1266 | /** |
| 1267 | * fc_remove_host - called to terminate any fc_transport-related elements |
| 1268 | * for a scsi host. |
| 1269 | * @rport: remote port to be unblocked. |
| 1270 | * |
| 1271 | * This routine is expected to be called immediately preceeding the |
| 1272 | * a driver's call to scsi_remove_host(). |
| 1273 | * |
| 1274 | * WARNING: A driver utilizing the fc_transport, which fails to call |
| 1275 | * this routine prior to scsi_remote_host(), will leave dangling |
| 1276 | * objects in /sys/class/fc_remote_ports. Access to any of these |
| 1277 | * objects can result in a system crash !!! |
| 1278 | * |
| 1279 | * Notes: |
| 1280 | * This routine assumes no locks are held on entry. |
| 1281 | **/ |
| 1282 | void |
| 1283 | fc_remove_host(struct Scsi_Host *shost) |
| 1284 | { |
| 1285 | struct fc_rport *rport, *next_rport; |
| 1286 | |
| 1287 | /* Remove any remote ports */ |
| 1288 | list_for_each_entry_safe(rport, next_rport, |
| 1289 | &fc_host_rports(shost), peers) |
| 1290 | fc_rport_terminate(rport); |
| 1291 | list_for_each_entry_safe(rport, next_rport, |
| 1292 | &fc_host_rport_bindings(shost), peers) |
| 1293 | fc_rport_terminate(rport); |
| 1294 | } |
| 1295 | EXPORT_SYMBOL(fc_remove_host); |
| 1296 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1297 | /* |
| 1298 | * fc_rport_tgt_remove - Removes the scsi target on the remote port |
| 1299 | * @rport: The remote port to be operated on |
| 1300 | */ |
| 1301 | static void |
| 1302 | fc_rport_tgt_remove(struct fc_rport *rport) |
| 1303 | { |
| 1304 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 1305 | |
| 1306 | scsi_target_unblock(&rport->dev); |
| 1307 | |
| 1308 | /* Stop anything on the workq */ |
| 1309 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
| 1310 | flush_scheduled_work(); |
| 1311 | scsi_flush_work(shost); |
| 1312 | |
| 1313 | scsi_remove_target(&rport->dev); |
| 1314 | } |
| 1315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | /** |
| 1317 | * fc_rport_create - allocates and creates a remote FC port. |
| 1318 | * @shost: scsi host the remote port is connected to. |
| 1319 | * @channel: Channel on shost port connected to. |
| 1320 | * @ids: The world wide names, fc address, and FC4 port |
| 1321 | * roles for the remote port. |
| 1322 | * |
| 1323 | * Allocates and creates the remoter port structure, including the |
| 1324 | * class and sysfs creation. |
| 1325 | * |
| 1326 | * Notes: |
| 1327 | * This routine assumes no locks are held on entry. |
| 1328 | **/ |
| 1329 | struct fc_rport * |
| 1330 | fc_rport_create(struct Scsi_Host *shost, int channel, |
| 1331 | struct fc_rport_identifiers *ids) |
| 1332 | { |
| 1333 | struct fc_host_attrs *fc_host = |
| 1334 | (struct fc_host_attrs *)shost->shost_data; |
| 1335 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
| 1336 | struct fc_rport *rport; |
| 1337 | struct device *dev; |
| 1338 | unsigned long flags; |
| 1339 | int error; |
| 1340 | size_t size; |
| 1341 | |
| 1342 | size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); |
Jes Sorensen | 24669f75 | 2006-01-16 10:31:18 -0500 | [diff] [blame] | 1343 | rport = kzalloc(size, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | if (unlikely(!rport)) { |
| 1345 | printk(KERN_ERR "%s: allocation failure\n", __FUNCTION__); |
| 1346 | return NULL; |
| 1347 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | |
| 1349 | rport->maxframe_size = -1; |
| 1350 | rport->supported_classes = FC_COS_UNSPECIFIED; |
| 1351 | rport->dev_loss_tmo = fc_dev_loss_tmo; |
| 1352 | memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); |
| 1353 | memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); |
| 1354 | rport->port_id = ids->port_id; |
| 1355 | rport->roles = ids->roles; |
| 1356 | rport->port_state = FC_PORTSTATE_ONLINE; |
| 1357 | if (fci->f->dd_fcrport_size) |
| 1358 | rport->dd_data = &rport[1]; |
| 1359 | rport->channel = channel; |
| 1360 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1361 | INIT_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport, rport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | INIT_WORK(&rport->scan_work, fc_scsi_scan_rport, rport); |
| 1363 | |
| 1364 | spin_lock_irqsave(shost->host_lock, flags); |
| 1365 | |
| 1366 | rport->number = fc_host->next_rport_number++; |
| 1367 | if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) |
| 1368 | rport->scsi_target_id = fc_host->next_target_id++; |
| 1369 | else |
| 1370 | rport->scsi_target_id = -1; |
| 1371 | list_add_tail(&rport->peers, &fc_host_rports(shost)); |
| 1372 | get_device(&shost->shost_gendev); |
| 1373 | |
| 1374 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1375 | |
| 1376 | dev = &rport->dev; |
| 1377 | device_initialize(dev); |
| 1378 | dev->parent = get_device(&shost->shost_gendev); |
| 1379 | dev->release = fc_rport_dev_release; |
| 1380 | sprintf(dev->bus_id, "rport-%d:%d-%d", |
| 1381 | shost->host_no, channel, rport->number); |
| 1382 | transport_setup_device(dev); |
| 1383 | |
| 1384 | error = device_add(dev); |
| 1385 | if (error) { |
| 1386 | printk(KERN_ERR "FC Remote Port device_add failed\n"); |
| 1387 | goto delete_rport; |
| 1388 | } |
| 1389 | transport_add_device(dev); |
| 1390 | transport_configure_device(dev); |
| 1391 | |
| 1392 | if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) |
| 1393 | /* initiate a scan of the target */ |
| 1394 | scsi_queue_work(shost, &rport->scan_work); |
| 1395 | |
| 1396 | return rport; |
| 1397 | |
| 1398 | delete_rport: |
| 1399 | transport_destroy_device(dev); |
| 1400 | put_device(dev->parent); |
| 1401 | spin_lock_irqsave(shost->host_lock, flags); |
| 1402 | list_del(&rport->peers); |
| 1403 | put_device(&shost->shost_gendev); |
| 1404 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1405 | put_device(dev->parent); |
| 1406 | kfree(rport); |
| 1407 | return NULL; |
| 1408 | } |
| 1409 | |
| 1410 | /** |
| 1411 | * fc_remote_port_add - notifies the fc transport of the existence |
| 1412 | * of a remote FC port. |
| 1413 | * @shost: scsi host the remote port is connected to. |
| 1414 | * @channel: Channel on shost port connected to. |
| 1415 | * @ids: The world wide names, fc address, and FC4 port |
| 1416 | * roles for the remote port. |
| 1417 | * |
| 1418 | * The LLDD calls this routine to notify the transport of the existence |
| 1419 | * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) |
| 1420 | * of the port, it's FC address (port_id), and the FC4 roles that are |
| 1421 | * active for the port. |
| 1422 | * |
| 1423 | * For ports that are FCP targets (aka scsi targets), the FC transport |
| 1424 | * maintains consistent target id bindings on behalf of the LLDD. |
| 1425 | * A consistent target id binding is an assignment of a target id to |
| 1426 | * a remote port identifier, which persists while the scsi host is |
| 1427 | * attached. The remote port can disappear, then later reappear, and |
| 1428 | * it's target id assignment remains the same. This allows for shifts |
| 1429 | * in FC addressing (if binding by wwpn or wwnn) with no apparent |
| 1430 | * changes to the scsi subsystem which is based on scsi host number and |
| 1431 | * target id values. Bindings are only valid during the attachment of |
| 1432 | * the scsi host. If the host detaches, then later re-attaches, target |
| 1433 | * id bindings may change. |
| 1434 | * |
| 1435 | * This routine is responsible for returning a remote port structure. |
| 1436 | * The routine will search the list of remote ports it maintains |
| 1437 | * internally on behalf of consistent target id mappings. If found, the |
| 1438 | * remote port structure will be reused. Otherwise, a new remote port |
| 1439 | * structure will be allocated. |
| 1440 | * |
| 1441 | * Whenever a remote port is allocated, a new fc_remote_port class |
| 1442 | * device is created. |
| 1443 | * |
| 1444 | * Should not be called from interrupt context. |
| 1445 | * |
| 1446 | * Notes: |
| 1447 | * This routine assumes no locks are held on entry. |
| 1448 | **/ |
| 1449 | struct fc_rport * |
| 1450 | fc_remote_port_add(struct Scsi_Host *shost, int channel, |
| 1451 | struct fc_rport_identifiers *ids) |
| 1452 | { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1453 | struct fc_internal *fci = to_fc_internal(shost->transportt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | struct fc_rport *rport; |
| 1455 | unsigned long flags; |
| 1456 | int match = 0; |
| 1457 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1458 | /* |
| 1459 | * Search the list of "active" rports, for an rport that has been |
| 1460 | * deleted, but we've held off the real delete while the target |
| 1461 | * is in a "blocked" state. |
| 1462 | */ |
| 1463 | spin_lock_irqsave(shost->host_lock, flags); |
| 1464 | |
| 1465 | list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
| 1466 | |
| 1467 | if ((rport->port_state == FC_PORTSTATE_BLOCKED) && |
| 1468 | (rport->channel == channel)) { |
| 1469 | |
| 1470 | switch (fc_host_tgtid_bind_type(shost)) { |
| 1471 | case FC_TGTID_BIND_BY_WWPN: |
| 1472 | case FC_TGTID_BIND_NONE: |
| 1473 | if (rport->port_name == ids->port_name) |
| 1474 | match = 1; |
| 1475 | break; |
| 1476 | case FC_TGTID_BIND_BY_WWNN: |
| 1477 | if (rport->node_name == ids->node_name) |
| 1478 | match = 1; |
| 1479 | break; |
| 1480 | case FC_TGTID_BIND_BY_ID: |
| 1481 | if (rport->port_id == ids->port_id) |
| 1482 | match = 1; |
| 1483 | break; |
| 1484 | } |
| 1485 | |
| 1486 | if (match) { |
| 1487 | struct work_struct *work = |
| 1488 | &rport->dev_loss_work; |
| 1489 | |
| 1490 | memcpy(&rport->node_name, &ids->node_name, |
| 1491 | sizeof(rport->node_name)); |
| 1492 | memcpy(&rport->port_name, &ids->port_name, |
| 1493 | sizeof(rport->port_name)); |
| 1494 | rport->port_id = ids->port_id; |
| 1495 | |
| 1496 | rport->port_state = FC_PORTSTATE_ONLINE; |
| 1497 | rport->roles = ids->roles; |
| 1498 | |
| 1499 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1500 | |
| 1501 | if (fci->f->dd_fcrport_size) |
| 1502 | memset(rport->dd_data, 0, |
| 1503 | fci->f->dd_fcrport_size); |
| 1504 | |
| 1505 | /* |
| 1506 | * If we were blocked, we were a target. |
| 1507 | * If no longer a target, we leave the timer |
| 1508 | * running in case the port changes roles |
| 1509 | * prior to the timer expiring. If the timer |
| 1510 | * fires, the target will be torn down. |
| 1511 | */ |
| 1512 | if (!(ids->roles & FC_RPORT_ROLE_FCP_TARGET)) |
| 1513 | return rport; |
| 1514 | |
| 1515 | /* restart the target */ |
| 1516 | |
| 1517 | /* |
| 1518 | * Stop the target timer first. Take no action |
| 1519 | * on the del_timer failure as the state |
| 1520 | * machine state change will validate the |
| 1521 | * transaction. |
| 1522 | */ |
| 1523 | if (!cancel_delayed_work(work)) |
| 1524 | flush_scheduled_work(); |
| 1525 | |
| 1526 | /* initiate a scan of the target */ |
| 1527 | scsi_queue_work(shost, &rport->scan_work); |
| 1528 | |
| 1529 | return rport; |
| 1530 | } |
| 1531 | } |
| 1532 | } |
| 1533 | |
| 1534 | /* Search the bindings array */ |
Andrew Vasquez | 8b097a6 | 2006-02-14 14:22:14 -0800 | [diff] [blame] | 1535 | if (fc_host_tgtid_bind_type(shost) != FC_TGTID_BIND_NONE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | |
| 1537 | /* search for a matching consistent binding */ |
| 1538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | list_for_each_entry(rport, &fc_host_rport_bindings(shost), |
| 1540 | peers) { |
| 1541 | if (rport->channel != channel) |
| 1542 | continue; |
| 1543 | |
| 1544 | switch (fc_host_tgtid_bind_type(shost)) { |
| 1545 | case FC_TGTID_BIND_BY_WWPN: |
| 1546 | if (rport->port_name == ids->port_name) |
| 1547 | match = 1; |
| 1548 | break; |
| 1549 | case FC_TGTID_BIND_BY_WWNN: |
| 1550 | if (rport->node_name == ids->node_name) |
| 1551 | match = 1; |
| 1552 | break; |
| 1553 | case FC_TGTID_BIND_BY_ID: |
| 1554 | if (rport->port_id == ids->port_id) |
| 1555 | match = 1; |
| 1556 | break; |
| 1557 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ |
| 1558 | break; |
| 1559 | } |
| 1560 | |
| 1561 | if (match) { |
| 1562 | list_move_tail(&rport->peers, |
| 1563 | &fc_host_rports(shost)); |
| 1564 | break; |
| 1565 | } |
| 1566 | } |
| 1567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | if (match) { |
| 1569 | memcpy(&rport->node_name, &ids->node_name, |
| 1570 | sizeof(rport->node_name)); |
| 1571 | memcpy(&rport->port_name, &ids->port_name, |
| 1572 | sizeof(rport->port_name)); |
| 1573 | rport->port_id = ids->port_id; |
| 1574 | rport->roles = ids->roles; |
| 1575 | rport->port_state = FC_PORTSTATE_ONLINE; |
| 1576 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1577 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1578 | |
| 1579 | if (fci->f->dd_fcrport_size) |
| 1580 | memset(rport->dd_data, 0, |
| 1581 | fci->f->dd_fcrport_size); |
| 1582 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1583 | if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) |
| 1584 | /* initiate a scan of the target */ |
| 1585 | scsi_queue_work(shost, &rport->scan_work); |
| 1586 | |
| 1587 | return rport; |
| 1588 | } |
| 1589 | } |
| 1590 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1591 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1592 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | /* No consistent binding found - create new remote port entry */ |
| 1594 | rport = fc_rport_create(shost, channel, ids); |
| 1595 | |
| 1596 | return rport; |
| 1597 | } |
| 1598 | EXPORT_SYMBOL(fc_remote_port_add); |
| 1599 | |
| 1600 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | * fc_rport_terminate - this routine tears down and deallocates a remote port. |
| 1602 | * @rport: The remote port to be terminated |
| 1603 | * |
| 1604 | * Notes: |
| 1605 | * This routine assumes no locks are held on entry. |
| 1606 | */ |
| 1607 | static void |
| 1608 | fc_rport_terminate(struct fc_rport *rport) |
| 1609 | { |
| 1610 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 1611 | struct device *dev = &rport->dev; |
| 1612 | unsigned long flags; |
| 1613 | |
| 1614 | fc_rport_tgt_remove(rport); |
| 1615 | |
| 1616 | transport_remove_device(dev); |
| 1617 | device_del(dev); |
| 1618 | transport_destroy_device(dev); |
| 1619 | spin_lock_irqsave(shost->host_lock, flags); |
| 1620 | list_del(&rport->peers); |
| 1621 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1622 | put_device(&shost->shost_gendev); |
| 1623 | } |
| 1624 | |
| 1625 | /** |
| 1626 | * fc_remote_port_delete - notifies the fc transport that a remote |
| 1627 | * port is no longer in existence. |
| 1628 | * @rport: The remote port that no longer exists |
| 1629 | * |
| 1630 | * The LLDD calls this routine to notify the transport that a remote |
| 1631 | * port is no longer part of the topology. Note: Although a port |
| 1632 | * may no longer be part of the topology, it may persist in the remote |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1633 | * ports displayed by the fc_host. We do this under 2 conditions: |
| 1634 | * - If the port was a scsi target, we delay its deletion by "blocking" it. |
| 1635 | * This allows the port to temporarily disappear, then reappear without |
| 1636 | * disrupting the SCSI device tree attached to it. During the "blocked" |
| 1637 | * period the port will still exist. |
| 1638 | * - If the port was a scsi target and disappears for longer than we |
| 1639 | * expect, we'll delete the port and the tear down the SCSI device tree |
| 1640 | * attached to it. However, we want to semi-persist the target id assigned |
| 1641 | * to that port if it eventually does exist. The port structure will |
| 1642 | * remain (although with minimal information) so that the target id |
| 1643 | * bindings remails. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | * |
| 1645 | * If the remote port is not an FCP Target, it will be fully torn down |
| 1646 | * and deallocated, including the fc_remote_port class device. |
| 1647 | * |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1648 | * If the remote port is an FCP Target, the port will be placed in a |
| 1649 | * temporary blocked state. From the LLDD's perspective, the rport no |
| 1650 | * longer exists. From the SCSI midlayer's perspective, the SCSI target |
| 1651 | * exists, but all sdevs on it are blocked from further I/O. The following |
| 1652 | * is then expected: |
| 1653 | * If the remote port does not return (signaled by a LLDD call to |
| 1654 | * fc_remote_port_add()) within the dev_loss_tmo timeout, then the |
| 1655 | * scsi target is removed - killing all outstanding i/o and removing the |
| 1656 | * scsi devices attached ot it. The port structure will be marked Not |
| 1657 | * Present and be partially cleared, leaving only enough information to |
| 1658 | * recognize the remote port relative to the scsi target id binding if |
| 1659 | * it later appears. The port will remain as long as there is a valid |
| 1660 | * binding (e.g. until the user changes the binding type or unloads the |
| 1661 | * scsi host with the binding). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1662 | * |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1663 | * If the remote port returns within the dev_loss_tmo value (and matches |
| 1664 | * according to the target id binding type), the port structure will be |
| 1665 | * reused. If it is no longer a SCSI target, the target will be torn |
| 1666 | * down. If it continues to be a SCSI target, then the target will be |
| 1667 | * unblocked (allowing i/o to be resumed), and a scan will be activated |
| 1668 | * to ensure that all luns are detected. |
| 1669 | * |
| 1670 | * Called from normal process context only - cannot be called from interrupt. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | * |
| 1672 | * Notes: |
| 1673 | * This routine assumes no locks are held on entry. |
| 1674 | **/ |
| 1675 | void |
| 1676 | fc_remote_port_delete(struct fc_rport *rport) |
| 1677 | { |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1678 | int timeout = rport->dev_loss_tmo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1679 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1680 | /* If no scsi target id mapping, delete it */ |
| 1681 | if (rport->scsi_target_id == -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | fc_rport_terminate(rport); |
| 1683 | return; |
| 1684 | } |
| 1685 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1686 | scsi_target_block(&rport->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1688 | /* cap the length the devices can be blocked until they are deleted */ |
| 1689 | schedule_delayed_work(&rport->dev_loss_work, timeout * HZ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1691 | rport->port_state = FC_PORTSTATE_BLOCKED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | } |
| 1693 | EXPORT_SYMBOL(fc_remote_port_delete); |
| 1694 | |
| 1695 | /** |
| 1696 | * fc_remote_port_rolechg - notifies the fc transport that the roles |
| 1697 | * on a remote may have changed. |
| 1698 | * @rport: The remote port that changed. |
| 1699 | * |
| 1700 | * The LLDD calls this routine to notify the transport that the roles |
| 1701 | * on a remote port may have changed. The largest effect of this is |
| 1702 | * if a port now becomes a FCP Target, it must be allocated a |
| 1703 | * scsi target id. If the port is no longer a FCP target, any |
| 1704 | * scsi target id value assigned to it will persist in case the |
| 1705 | * role changes back to include FCP Target. No changes in the scsi |
| 1706 | * midlayer will be invoked if the role changes (in the expectation |
| 1707 | * that the role will be resumed. If it doesn't normal error processing |
| 1708 | * will take place). |
| 1709 | * |
| 1710 | * Should not be called from interrupt context. |
| 1711 | * |
| 1712 | * Notes: |
| 1713 | * This routine assumes no locks are held on entry. |
| 1714 | **/ |
| 1715 | void |
| 1716 | fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) |
| 1717 | { |
| 1718 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 1719 | struct fc_host_attrs *fc_host = |
| 1720 | (struct fc_host_attrs *)shost->shost_data; |
| 1721 | unsigned long flags; |
| 1722 | int create = 0; |
| 1723 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | spin_lock_irqsave(shost->host_lock, flags); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1725 | if (roles & FC_RPORT_ROLE_FCP_TARGET) { |
| 1726 | if (rport->scsi_target_id == -1) { |
| 1727 | rport->scsi_target_id = fc_host->next_target_id++; |
| 1728 | create = 1; |
| 1729 | } else if (!(rport->roles & FC_RPORT_ROLE_FCP_TARGET)) |
| 1730 | create = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | } |
| 1732 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1733 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1734 | rport->roles = roles; |
| 1735 | |
| 1736 | if (create) { |
| 1737 | /* |
| 1738 | * There may have been a delete timer running on the |
| 1739 | * port. Ensure that it is cancelled as we now know |
| 1740 | * the port is an FCP Target. |
| 1741 | * Note: we know the rport is exists and in an online |
| 1742 | * state as the LLDD would not have had an rport |
| 1743 | * reference to pass us. |
| 1744 | * |
| 1745 | * Take no action on the del_timer failure as the state |
| 1746 | * machine state change will validate the |
| 1747 | * transaction. |
| 1748 | */ |
| 1749 | if (!cancel_delayed_work(&rport->dev_loss_work)) |
| 1750 | flush_scheduled_work(); |
| 1751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | /* initiate a scan of the target */ |
| 1753 | scsi_queue_work(shost, &rport->scan_work); |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | } |
| 1756 | EXPORT_SYMBOL(fc_remote_port_rolechg); |
| 1757 | |
| 1758 | /** |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1759 | * fc_timeout_deleted_rport - Timeout handler for a deleted remote port that |
| 1760 | * was a SCSI target (thus was blocked), and failed |
| 1761 | * to return in the alloted time. |
| 1762 | * |
| 1763 | * @data: rport target that failed to reappear in the alloted time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | **/ |
| 1765 | static void |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1766 | fc_timeout_deleted_rport(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | { |
| 1768 | struct fc_rport *rport = (struct fc_rport *)data; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1769 | struct Scsi_Host *shost = rport_to_shost(rport); |
| 1770 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1772 | spin_lock_irqsave(shost->host_lock, flags); |
| 1773 | |
| 1774 | /* |
| 1775 | * If the port is ONLINE, then it came back, but was no longer an |
| 1776 | * FCP target. Thus we need to tear down the scsi_target on it. |
| 1777 | */ |
| 1778 | if (rport->port_state == FC_PORTSTATE_ONLINE) { |
| 1779 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1780 | |
| 1781 | dev_printk(KERN_ERR, &rport->dev, |
| 1782 | "blocked FC remote port time out: removing target\n"); |
| 1783 | |
| 1784 | fc_rport_tgt_remove(rport); |
| 1785 | |
| 1786 | return; |
| 1787 | } |
| 1788 | |
| 1789 | if (rport->port_state != FC_PORTSTATE_BLOCKED) { |
| 1790 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1791 | dev_printk(KERN_ERR, &rport->dev, |
| 1792 | "blocked FC remote port time out: leaving target alone\n"); |
| 1793 | return; |
| 1794 | } |
| 1795 | |
| 1796 | if (fc_host_tgtid_bind_type(shost) == FC_TGTID_BIND_NONE) { |
| 1797 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1798 | dev_printk(KERN_ERR, &rport->dev, |
| 1799 | "blocked FC remote port time out: removing target\n"); |
| 1800 | fc_rport_terminate(rport); |
| 1801 | return; |
| 1802 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | |
| 1804 | dev_printk(KERN_ERR, &rport->dev, |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1805 | "blocked FC remote port time out: removing target and " |
| 1806 | "saving binding\n"); |
| 1807 | |
| 1808 | list_move_tail(&rport->peers, &fc_host_rport_bindings(shost)); |
| 1809 | |
| 1810 | /* |
| 1811 | * Note: We do not remove or clear the hostdata area. This allows |
| 1812 | * host-specific target data to persist along with the |
| 1813 | * scsi_target_id. It's up to the host to manage it's hostdata area. |
| 1814 | */ |
| 1815 | |
| 1816 | /* |
| 1817 | * Reinitialize port attributes that may change if the port comes back. |
| 1818 | */ |
| 1819 | rport->maxframe_size = -1; |
| 1820 | rport->supported_classes = FC_COS_UNSPECIFIED; |
| 1821 | rport->roles = FC_RPORT_ROLE_UNKNOWN; |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 1822 | rport->port_state = FC_PORTSTATE_DELETED; |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1823 | |
| 1824 | /* remove the identifiers that aren't used in the consisting binding */ |
| 1825 | switch (fc_host_tgtid_bind_type(shost)) { |
| 1826 | case FC_TGTID_BIND_BY_WWPN: |
| 1827 | rport->node_name = -1; |
| 1828 | rport->port_id = -1; |
| 1829 | break; |
| 1830 | case FC_TGTID_BIND_BY_WWNN: |
| 1831 | rport->port_name = -1; |
| 1832 | rport->port_id = -1; |
| 1833 | break; |
| 1834 | case FC_TGTID_BIND_BY_ID: |
| 1835 | rport->node_name = -1; |
| 1836 | rport->port_name = -1; |
| 1837 | break; |
| 1838 | case FC_TGTID_BIND_NONE: /* to keep compiler happy */ |
| 1839 | break; |
| 1840 | } |
| 1841 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | /* |
| 1843 | * As this only occurs if the remote port (scsi target) |
| 1844 | * went away and didn't come back - we'll remove |
| 1845 | * all attached scsi devices. |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 1846 | * |
| 1847 | * We'll schedule the shost work item to perform the actual removal |
| 1848 | * to avoid recursion in the different flush calls if we perform |
| 1849 | * the removal in each target - and there are lots of targets |
| 1850 | * whose timeouts fire at the same time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | */ |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 1852 | |
| 1853 | if ( !(fc_host_flags(shost) & FC_SHOST_RPORT_DEL_SCHEDULED)) { |
| 1854 | fc_host_flags(shost) |= FC_SHOST_RPORT_DEL_SCHEDULED; |
| 1855 | scsi_queue_work(shost, &fc_host_rport_del_work(shost)); |
| 1856 | } |
| 1857 | |
| 1858 | spin_unlock_irqrestore(shost->host_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | } |
| 1860 | |
| 1861 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | * fc_scsi_scan_rport - called to perform a scsi scan on a remote port. |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1863 | * |
| 1864 | * Will unblock the target (in case it went away and has now come back), |
| 1865 | * then invoke a scan. |
| 1866 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | * @data: remote port to be scanned. |
| 1868 | **/ |
| 1869 | static void |
| 1870 | fc_scsi_scan_rport(void *data) |
| 1871 | { |
| 1872 | struct fc_rport *rport = (struct fc_rport *)data; |
| 1873 | |
James.Smart@Emulex.Com | 19a7b4a | 2005-10-18 12:03:35 -0400 | [diff] [blame] | 1874 | scsi_target_unblock(&rport->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | scsi_scan_target(&rport->dev, rport->channel, rport->scsi_target_id, |
| 1876 | SCAN_WILD_CARD, 1); |
| 1877 | } |
| 1878 | |
| 1879 | |
James.Smart@Emulex.Com | 42e3314 | 2005-12-15 09:56:22 -0500 | [diff] [blame] | 1880 | /** |
| 1881 | * fc_shost_remove_rports - called to remove all rports that are marked |
| 1882 | * as in a deleted (not connected) state. |
| 1883 | * |
| 1884 | * @data: shost whose rports are to be looked at |
| 1885 | **/ |
| 1886 | static void |
| 1887 | fc_shost_remove_rports(void *data) |
| 1888 | { |
| 1889 | struct Scsi_Host *shost = (struct Scsi_Host *)data; |
| 1890 | struct fc_rport *rport, *next_rport; |
| 1891 | unsigned long flags; |
| 1892 | |
| 1893 | spin_lock_irqsave(shost->host_lock, flags); |
| 1894 | while (fc_host_flags(shost) & FC_SHOST_RPORT_DEL_SCHEDULED) { |
| 1895 | |
| 1896 | fc_host_flags(shost) &= ~FC_SHOST_RPORT_DEL_SCHEDULED; |
| 1897 | |
| 1898 | restart_search: |
| 1899 | list_for_each_entry_safe(rport, next_rport, |
| 1900 | &fc_host_rport_bindings(shost), peers) { |
| 1901 | if (rport->port_state == FC_PORTSTATE_DELETED) { |
| 1902 | rport->port_state = FC_PORTSTATE_NOTPRESENT; |
| 1903 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1904 | fc_rport_tgt_remove(rport); |
| 1905 | spin_lock_irqsave(shost->host_lock, flags); |
| 1906 | goto restart_search; |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | } |
| 1911 | spin_unlock_irqrestore(shost->host_lock, flags); |
| 1912 | } |
| 1913 | |
| 1914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | MODULE_AUTHOR("Martin Hicks"); |
| 1916 | MODULE_DESCRIPTION("FC Transport Attributes"); |
| 1917 | MODULE_LICENSE("GPL"); |
| 1918 | |
| 1919 | module_init(fc_transport_init); |
| 1920 | module_exit(fc_transport_exit); |